drivers/scsi/ipr.c

   1 /*
   2  * ipr.c -- driver for IBM Power Linux RAID adapters
   3  *
   4  * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
   5  *
   6  * Copyright (C) 2003, 2004 IBM Corporation
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 /*
  25  * Notes:
  26  *
  27  * This driver is used to control the following SCSI adapters:
  28  *
  29  * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
  30  *
  31  * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
  32  *              PCI-X Dual Channel Ultra 320 SCSI Adapter
  33  *              PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
  34  *              Embedded SCSI adapter on p615 and p655 systems
  35  *
  36  * Supported Hardware Features:
  37  *      - Ultra 320 SCSI controller
  38  *      - PCI-X host interface
  39  *      - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
  40  *      - Non-Volatile Write Cache
  41  *      - Supports attachment of non-RAID disks, tape, and optical devices
  42  *      - RAID Levels 0, 5, 10
  43  *      - Hot spare
  44  *      - Background Parity Checking
  45  *      - Background Data Scrubbing
  46  *      - Ability to increase the capacity of an existing RAID 5 disk array
  47  *              by adding disks
  48  *
  49  * Driver Features:
  50  *      - Tagged command queuing
  51  *      - Adapter microcode download
  52  *      - PCI hot plug
  53  *      - SCSI device hot plug
  54  *
  55  */
  56
  57 #include <linux/fs.h>
  58 #include <linux/init.h>
  59 #include <linux/types.h>
  60 #include <linux/errno.h>
  61 #include <linux/kernel.h>
  62 #include <linux/slab.h>
  63 #include <linux/vmalloc.h>
  64 #include <linux/ioport.h>
  65 #include <linux/delay.h>
  66 #include <linux/pci.h>
  67 #include <linux/wait.h>
  68 #include <linux/spinlock.h>
  69 #include <linux/sched.h>
  70 #include <linux/interrupt.h>
  71 #include <linux/blkdev.h>
  72 #include <linux/firmware.h>
  73 #include <linux/module.h>
  74 #include <linux/moduleparam.h>
  75 #include <linux/libata.h>
  76 #include <linux/hdreg.h>
  77 #include <linux/reboot.h>
  78 #include <linux/stringify.h>
  79 #include <asm/io.h>
  80 #include <asm/irq.h>
  81 #include <asm/processor.h>
  82 #include <scsi/scsi.h>
  83 #include <scsi/scsi_host.h>
  84 #include <scsi/scsi_tcq.h>
  85 #include <scsi/scsi_eh.h>
  86 #include <scsi/scsi_cmnd.h>
  87 #include "ipr.h"
  88
  89 /*
  90  *   Global Data
  91  */
  92 static LIST_HEAD(ipr_ioa_head);
  93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
  94 static unsigned int ipr_max_speed = 1;
  95 static int ipr_testmode = 0;
  96 static unsigned int ipr_fastfail = 0;
  97 static unsigned int ipr_transop_timeout = 0;
  98 static unsigned int ipr_debug = 0;
  99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
 100 static unsigned int ipr_dual_ioa_raid = 1;
 101 static unsigned int ipr_number_of_msix = 16;
 102 static unsigned int ipr_fast_reboot;
 103 static DEFINE_SPINLOCK(ipr_driver_lock);
 104
 105 /* This table describes the differences between DMA controller chips */
 106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
 107         { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
 108                 .mailbox = 0x0042C,
 109                 .max_cmds = 100,
 110                 .cache_line_size = 0x20,
 111                 .clear_isr = 1,
 112                 .iopoll_weight = 0,
 113                 {
 114                         .set_interrupt_mask_reg = 0x0022C,
 115                         .clr_interrupt_mask_reg = 0x00230,
 116                         .clr_interrupt_mask_reg32 = 0x00230,
 117                         .sense_interrupt_mask_reg = 0x0022C,
 118                         .sense_interrupt_mask_reg32 = 0x0022C,
 119                         .clr_interrupt_reg = 0x00228,
 120                         .clr_interrupt_reg32 = 0x00228,
 121                         .sense_interrupt_reg = 0x00224,
 122                         .sense_interrupt_reg32 = 0x00224,
 123                         .ioarrin_reg = 0x00404,
 124                         .sense_uproc_interrupt_reg = 0x00214,
 125                         .sense_uproc_interrupt_reg32 = 0x00214,
 126                         .set_uproc_interrupt_reg = 0x00214,
 127                         .set_uproc_interrupt_reg32 = 0x00214,
 128                         .clr_uproc_interrupt_reg = 0x00218,
 129                         .clr_uproc_interrupt_reg32 = 0x00218
 130                 }
 131         },
 132         { /* Snipe and Scamp */
 133                 .mailbox = 0x0052C,
 134                 .max_cmds = 100,
 135                 .cache_line_size = 0x20,
 136                 .clear_isr = 1,
 137                 .iopoll_weight = 0,
 138                 {
 139                         .set_interrupt_mask_reg = 0x00288,
 140                         .clr_interrupt_mask_reg = 0x0028C,
 141                         .clr_interrupt_mask_reg32 = 0x0028C,
 142                         .sense_interrupt_mask_reg = 0x00288,
 143                         .sense_interrupt_mask_reg32 = 0x00288,
 144                         .clr_interrupt_reg = 0x00284,
 145                         .clr_interrupt_reg32 = 0x00284,
 146                         .sense_interrupt_reg = 0x00280,
 147                         .sense_interrupt_reg32 = 0x00280,
 148                         .ioarrin_reg = 0x00504,
 149                         .sense_uproc_interrupt_reg = 0x00290,
 150                         .sense_uproc_interrupt_reg32 = 0x00290,
 151                         .set_uproc_interrupt_reg = 0x00290,
 152                         .set_uproc_interrupt_reg32 = 0x00290,
 153                         .clr_uproc_interrupt_reg = 0x00294,
 154                         .clr_uproc_interrupt_reg32 = 0x00294
 155                 }
 156         },
 157         { /* CRoC */
 158                 .mailbox = 0x00044,
 159                 .max_cmds = 1000,
 160                 .cache_line_size = 0x20,
 161                 .clear_isr = 0,
 162                 .iopoll_weight = 64,
 163                 {
 164                         .set_interrupt_mask_reg = 0x00010,
 165                         .clr_interrupt_mask_reg = 0x00018,
 166                         .clr_interrupt_mask_reg32 = 0x0001C,
 167                         .sense_interrupt_mask_reg = 0x00010,
 168                         .sense_interrupt_mask_reg32 = 0x00014,
 169                         .clr_interrupt_reg = 0x00008,
 170                         .clr_interrupt_reg32 = 0x0000C,
 171                         .sense_interrupt_reg = 0x00000,
 172                         .sense_interrupt_reg32 = 0x00004,
 173                         .ioarrin_reg = 0x00070,
 174                         .sense_uproc_interrupt_reg = 0x00020,
 175                         .sense_uproc_interrupt_reg32 = 0x00024,
 176                         .set_uproc_interrupt_reg = 0x00020,
 177                         .set_uproc_interrupt_reg32 = 0x00024,
 178                         .clr_uproc_interrupt_reg = 0x00028,
 179                         .clr_uproc_interrupt_reg32 = 0x0002C,
 180                         .init_feedback_reg = 0x0005C,
 181                         .dump_addr_reg = 0x00064,
 182                         .dump_data_reg = 0x00068,
 183                         .endian_swap_reg = 0x00084
 184                 }
 185         },
 186 };
 187
 188 static const struct ipr_chip_t ipr_chip[] = {
 189         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 190         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 191         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 192         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 193         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
 194         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 195         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
 196         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 197         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
 198         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
 199 };
 200
 201 static int ipr_max_bus_speeds[] = {
 202         IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
 203 };
 204
 205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
 206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
 207 module_param_named(max_speed, ipr_max_speed, uint, 0);
 208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
 209 module_param_named(log_level, ipr_log_level, uint, 0);
 210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
 211 module_param_named(testmode, ipr_testmode, int, 0);
 212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
 213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
 214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
 215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
 216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
 217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
 218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
 219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
 220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
 221 module_param_named(max_devs, ipr_max_devs, int, 0);
 222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
 223                  "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
 224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
 225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16).  (default:16)");
 226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
 227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
 228 MODULE_LICENSE("GPL");
 229 MODULE_VERSION(IPR_DRIVER_VERSION);
 230
 231 /*  A constant array of IOASCs/URCs/Error Messages */
 232 static const
 233 struct ipr_error_table_t ipr_error_table[] = {
 234         {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
 235         "8155: An unknown error was received"},
 236         {0x00330000, 0, 0,
 237         "Soft underlength error"},
 238         {0x005A0000, 0, 0,
 239         "Command to be cancelled not found"},
 240         {0x00808000, 0, 0,
 241         "Qualified success"},
 242         {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
 243         "FFFE: Soft device bus error recovered by the IOA"},
 244         {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
 245         "4101: Soft device bus fabric error"},
 246         {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
 247         "FFFC: Logical block guard error recovered by the device"},
 248         {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
 249         "FFFC: Logical block reference tag error recovered by the device"},
 250         {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
 251         "4171: Recovered scatter list tag / sequence number error"},
 252         {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
 253         "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
 254         {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
 255         "4171: Recovered logical block sequence number error on IOA to Host transfer"},
 256         {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
 257         "FFFD: Recovered logical block reference tag error detected by the IOA"},
 258         {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
 259         "FFFD: Logical block guard error recovered by the IOA"},
 260         {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
 261         "FFF9: Device sector reassign successful"},
 262         {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
 263         "FFF7: Media error recovered by device rewrite procedures"},
 264         {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
 265         "7001: IOA sector reassignment successful"},
 266         {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
 267         "FFF9: Soft media error. Sector reassignment recommended"},
 268         {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
 269         "FFF7: Media error recovered by IOA rewrite procedures"},
 270         {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
 271         "FF3D: Soft PCI bus error recovered by the IOA"},
 272         {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
 273         "FFF6: Device hardware error recovered by the IOA"},
 274         {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
 275         "FFF6: Device hardware error recovered by the device"},
 276         {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
 277         "FF3D: Soft IOA error recovered by the IOA"},
 278         {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
 279         "FFFA: Undefined device response recovered by the IOA"},
 280         {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 281         "FFF6: Device bus error, message or command phase"},
 282         {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
 283         "FFFE: Task Management Function failed"},
 284         {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
 285         "FFF6: Failure prediction threshold exceeded"},
 286         {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
 287         "8009: Impending cache battery pack failure"},
 288         {0x02040100, 0, 0,
 289         "Logical Unit in process of becoming ready"},
 290         {0x02040200, 0, 0,
 291         "Initializing command required"},
 292         {0x02040400, 0, 0,
 293         "34FF: Disk device format in progress"},
 294         {0x02040C00, 0, 0,
 295         "Logical unit not accessible, target port in unavailable state"},
 296         {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
 297         "9070: IOA requested reset"},
 298         {0x023F0000, 0, 0,
 299         "Synchronization required"},
 300         {0x02408500, 0, 0,
 301         "IOA microcode download required"},
 302         {0x02408600, 0, 0,
 303         "Device bus connection is prohibited by host"},
 304         {0x024E0000, 0, 0,
 305         "No ready, IOA shutdown"},
 306         {0x025A0000, 0, 0,
 307         "Not ready, IOA has been shutdown"},
 308         {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
 309         "3020: Storage subsystem configuration error"},
 310         {0x03110B00, 0, 0,
 311         "FFF5: Medium error, data unreadable, recommend reassign"},
 312         {0x03110C00, 0, 0,
 313         "7000: Medium error, data unreadable, do not reassign"},
 314         {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
 315         "FFF3: Disk media format bad"},
 316         {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
 317         "3002: Addressed device failed to respond to selection"},
 318         {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
 319         "3100: Device bus error"},
 320         {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
 321         "3109: IOA timed out a device command"},
 322         {0x04088000, 0, 0,
 323         "3120: SCSI bus is not operational"},
 324         {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
 325         "4100: Hard device bus fabric error"},
 326         {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
 327         "310C: Logical block guard error detected by the device"},
 328         {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
 329         "310C: Logical block reference tag error detected by the device"},
 330         {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
 331         "4170: Scatter list tag / sequence number error"},
 332         {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
 333         "8150: Logical block CRC error on IOA to Host transfer"},
 334         {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
 335         "4170: Logical block sequence number error on IOA to Host transfer"},
 336         {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
 337         "310D: Logical block reference tag error detected by the IOA"},
 338         {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
 339         "310D: Logical block guard error detected by the IOA"},
 340         {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
 341         "9000: IOA reserved area data check"},
 342         {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
 343         "9001: IOA reserved area invalid data pattern"},
 344         {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
 345         "9002: IOA reserved area LRC error"},
 346         {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
 347         "Hardware Error, IOA metadata access error"},
 348         {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
 349         "102E: Out of alternate sectors for disk storage"},
 350         {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
 351         "FFF4: Data transfer underlength error"},
 352         {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
 353         "FFF4: Data transfer overlength error"},
 354         {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
 355         "3400: Logical unit failure"},
 356         {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
 357         "FFF4: Device microcode is corrupt"},
 358         {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
 359         "8150: PCI bus error"},
 360         {0x04430000, 1, 0,
 361         "Unsupported device bus message received"},
 362         {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
 363         "FFF4: Disk device problem"},
 364         {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
 365         "8150: Permanent IOA failure"},
 366         {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
 367         "3010: Disk device returned wrong response to IOA"},
 368         {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
 369         "8151: IOA microcode error"},
 370         {0x04448500, 0, 0,
 371         "Device bus status error"},
 372         {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
 373         "8157: IOA error requiring IOA reset to recover"},
 374         {0x04448700, 0, 0,
 375         "ATA device status error"},
 376         {0x04490000, 0, 0,
 377         "Message reject received from the device"},
 378         {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
 379         "8008: A permanent cache battery pack failure occurred"},
 380         {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
 381         "9090: Disk unit has been modified after the last known status"},
 382         {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
 383         "9081: IOA detected device error"},
 384         {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
 385         "9082: IOA detected device error"},
 386         {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
 387         "3110: Device bus error, message or command phase"},
 388         {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
 389         "3110: SAS Command / Task Management Function failed"},
 390         {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
 391         "9091: Incorrect hardware configuration change has been detected"},
 392         {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
 393         "9073: Invalid multi-adapter configuration"},
 394         {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
 395         "4010: Incorrect connection between cascaded expanders"},
 396         {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
 397         "4020: Connections exceed IOA design limits"},
 398         {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
 399         "4030: Incorrect multipath connection"},
 400         {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
 401         "4110: Unsupported enclosure function"},
 402         {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
 403         "4120: SAS cable VPD cannot be read"},
 404         {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
 405         "FFF4: Command to logical unit failed"},
 406         {0x05240000, 1, 0,
 407         "Illegal request, invalid request type or request packet"},
 408         {0x05250000, 0, 0,
 409         "Illegal request, invalid resource handle"},
 410         {0x05258000, 0, 0,
 411         "Illegal request, commands not allowed to this device"},
 412         {0x05258100, 0, 0,
 413         "Illegal request, command not allowed to a secondary adapter"},
 414         {0x05258200, 0, 0,
 415         "Illegal request, command not allowed to a non-optimized resource"},
 416         {0x05260000, 0, 0,
 417         "Illegal request, invalid field in parameter list"},
 418         {0x05260100, 0, 0,
 419         "Illegal request, parameter not supported"},
 420         {0x05260200, 0, 0,
 421         "Illegal request, parameter value invalid"},
 422         {0x052C0000, 0, 0,
 423         "Illegal request, command sequence error"},
 424         {0x052C8000, 1, 0,
 425         "Illegal request, dual adapter support not enabled"},
 426         {0x052C8100, 1, 0,
 427         "Illegal request, another cable connector was physically disabled"},
 428         {0x054E8000, 1, 0,
 429         "Illegal request, inconsistent group id/group count"},
 430         {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
 431         "9031: Array protection temporarily suspended, protection resuming"},
 432         {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
 433         "9040: Array protection temporarily suspended, protection resuming"},
 434         {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
 435         "4080: IOA exceeded maximum operating temperature"},
 436         {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 437         "4085: Service required"},
 438         {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 439         "4086: SAS Adapter Hardware Configuration Error"},
 440         {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
 441         "3140: Device bus not ready to ready transition"},
 442         {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
 443         "FFFB: SCSI bus was reset"},
 444         {0x06290500, 0, 0,
 445         "FFFE: SCSI bus transition to single ended"},
 446         {0x06290600, 0, 0,
 447         "FFFE: SCSI bus transition to LVD"},
 448         {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
 449         "FFFB: SCSI bus was reset by another initiator"},
 450         {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
 451         "3029: A device replacement has occurred"},
 452         {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
 453         "4102: Device bus fabric performance degradation"},
 454         {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
 455         "9051: IOA cache data exists for a missing or failed device"},
 456         {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
 457         "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
 458         {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
 459         "9025: Disk unit is not supported at its physical location"},
 460         {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
 461         "3020: IOA detected a SCSI bus configuration error"},
 462         {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
 463         "3150: SCSI bus configuration error"},
 464         {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
 465         "9074: Asymmetric advanced function disk configuration"},
 466         {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
 467         "4040: Incomplete multipath connection between IOA and enclosure"},
 468         {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
 469         "4041: Incomplete multipath connection between enclosure and device"},
 470         {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
 471         "9075: Incomplete multipath connection between IOA and remote IOA"},
 472         {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
 473         "9076: Configuration error, missing remote IOA"},
 474         {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
 475         "4050: Enclosure does not support a required multipath function"},
 476         {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
 477         "4121: Configuration error, required cable is missing"},
 478         {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
 479         "4122: Cable is not plugged into the correct location on remote IOA"},
 480         {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
 481         "4123: Configuration error, invalid cable vital product data"},
 482         {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
 483         "4124: Configuration error, both cable ends are plugged into the same IOA"},
 484         {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
 485         "4070: Logically bad block written on device"},
 486         {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
 487         "9041: Array protection temporarily suspended"},
 488         {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
 489         "9042: Corrupt array parity detected on specified device"},
 490         {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
 491         "9030: Array no longer protected due to missing or failed disk unit"},
 492         {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
 493         "9071: Link operational transition"},
 494         {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
 495         "9072: Link not operational transition"},
 496         {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
 497         "9032: Array exposed but still protected"},
 498         {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
 499         "70DD: Device forced failed by disrupt device command"},
 500         {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
 501         "4061: Multipath redundancy level got better"},
 502         {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
 503         "4060: Multipath redundancy level got worse"},
 504         {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
 505         "9083: Device raw mode enabled"},
 506         {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
 507         "9084: Device raw mode disabled"},
 508         {0x07270000, 0, 0,
 509         "Failure due to other device"},
 510         {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
 511         "9008: IOA does not support functions expected by devices"},
 512         {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
 513         "9010: Cache data associated with attached devices cannot be found"},
 514         {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
 515         "9011: Cache data belongs to devices other than those attached"},
 516         {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
 517         "9020: Array missing 2 or more devices with only 1 device present"},
 518         {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
 519         "9021: Array missing 2 or more devices with 2 or more devices present"},
 520         {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
 521         "9022: Exposed array is missing a required device"},
 522         {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
 523         "9023: Array member(s) not at required physical locations"},
 524         {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
 525         "9024: Array not functional due to present hardware configuration"},
 526         {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
 527         "9026: Array not functional due to present hardware configuration"},
 528         {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
 529         "9027: Array is missing a device and parity is out of sync"},
 530         {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
 531         "9028: Maximum number of arrays already exist"},
 532         {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
 533         "9050: Required cache data cannot be located for a disk unit"},
 534         {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
 535         "9052: Cache data exists for a device that has been modified"},
 536         {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
 537         "9054: IOA resources not available due to previous problems"},
 538         {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
 539         "9092: Disk unit requires initialization before use"},
 540         {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
 541         "9029: Incorrect hardware configuration change has been detected"},
 542         {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
 543         "9060: One or more disk pairs are missing from an array"},
 544         {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
 545         "9061: One or more disks are missing from an array"},
 546         {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
 547         "9062: One or more disks are missing from an array"},
 548         {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
 549         "9063: Maximum number of functional arrays has been exceeded"},
 550         {0x07279A00, 0, 0,
 551         "Data protect, other volume set problem"},
 552         {0x0B260000, 0, 0,
 553         "Aborted command, invalid descriptor"},
 554         {0x0B3F9000, 0, 0,
 555         "Target operating conditions have changed, dual adapter takeover"},
 556         {0x0B530200, 0, 0,
 557         "Aborted command, medium removal prevented"},
 558         {0x0B5A0000, 0, 0,
 559         "Command terminated by host"},
 560         {0x0B5B8000, 0, 0,
 561         "Aborted command, command terminated by host"}
 562 };
 563
 564 static const struct ipr_ses_table_entry ipr_ses_table[] = {
 565         { "2104-DL1        ", "XXXXXXXXXXXXXXXX", 80 },
 566         { "2104-TL1        ", "XXXXXXXXXXXXXXXX", 80 },
 567         { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
 568         { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
 569         { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
 570         { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
 571         { "2104-DU3        ", "XXXXXXXXXXXXXXXX", 160 },
 572         { "2104-TU3        ", "XXXXXXXXXXXXXXXX", 160 },
 573         { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 574         { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
 575         { "St  V1S2        ", "XXXXXXXXXXXXXXXX", 160 },
 576         { "HSBPD4M  PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
 577         { "VSBPD1H   U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
 578 };
 579
 580 /*
 581  *  Function Prototypes
 582  */
 583 static int ipr_reset_alert(struct ipr_cmnd *);
 584 static void ipr_process_ccn(struct ipr_cmnd *);
 585 static void ipr_process_error(struct ipr_cmnd *);
 586 static void ipr_reset_ioa_job(struct ipr_cmnd *);
 587 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
 588                                    enum ipr_shutdown_type);
 589
 590 #ifdef CONFIG_SCSI_IPR_TRACE
 591 /**
 592  * ipr_trc_hook - Add a trace entry to the driver trace
 593  * @ipr_cmd:    ipr command struct
 594  * @type:               trace type
 595  * @add_data:   additional data
 596  *
 597  * Return value:
 598  *      none
 599  **/
 600 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
 601                          u8 type, u32 add_data)
 602 {
 603         struct ipr_trace_entry *trace_entry;
 604         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 605         unsigned int trace_index;
 606
 607         trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
 608         trace_entry = &ioa_cfg->trace[trace_index];
 609         trace_entry->time = jiffies;
 610         trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
 611         trace_entry->type = type;
 612         if (ipr_cmd->ioa_cfg->sis64)
 613                 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
 614         else
 615                 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
 616         trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
 617         trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
 618         trace_entry->u.add_data = add_data;
 619         wmb();
 620 }
 621 #else
 622 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
 623 #endif
 624
 625 /**
 626  * ipr_lock_and_done - Acquire lock and complete command
 627  * @ipr_cmd:    ipr command struct
 628  *
 629  * Return value:
 630  *      none
 631  **/
 632 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
 633 {
 634         unsigned long lock_flags;
 635         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 636
 637         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
 638         ipr_cmd->done(ipr_cmd);
 639         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
 640 }
 641
 642 /**
 643  * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
 644  * @ipr_cmd:    ipr command struct
 645  *
 646  * Return value:
 647  *      none
 648  **/
 649 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
 650 {
 651         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
 652         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
 653         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
 654         dma_addr_t dma_addr = ipr_cmd->dma_addr;
 655         int hrrq_id;
 656
 657         hrrq_id = ioarcb->cmd_pkt.hrrq_id;
 658         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
 659         ioarcb->cmd_pkt.hrrq_id = hrrq_id;
 660         ioarcb->data_transfer_length = 0;
 661         ioarcb->read_data_transfer_length = 0;
 662         ioarcb->ioadl_len = 0;
 663         ioarcb->read_ioadl_len = 0;
 664
 665         if (ipr_cmd->ioa_cfg->sis64) {
 666                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
 667                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
 668                 ioasa64->u.gata.status = 0;
 669         } else {
 670                 ioarcb->write_ioadl_addr =
 671                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
 672                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
 673                 ioasa->u.gata.status = 0;
 674         }
 675
 676         ioasa->hdr.ioasc = 0;
 677         ioasa->hdr.residual_data_len = 0;
 678         ipr_cmd->scsi_cmd = NULL;
 679         ipr_cmd->qc = NULL;
 680         ipr_cmd->sense_buffer[0] = 0;
 681         ipr_cmd->dma_use_sg = 0;
 682 }
 683
 684 /**
 685  * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
 686  * @ipr_cmd:    ipr command struct
 687  *
 688  * Return value:
 689  *      none
 690  **/
 691 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
 692                               void (*fast_done) (struct ipr_cmnd *))
 693 {
 694         ipr_reinit_ipr_cmnd(ipr_cmd);
 695         ipr_cmd->u.scratch = 0;
 696         ipr_cmd->sibling = NULL;
 697         ipr_cmd->eh_comp = NULL;
 698         ipr_cmd->fast_done = fast_done;
 699         timer_setup(&ipr_cmd->timer, NULL, 0);
 700 }
 701
 702 /**
 703  * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
 704  * @ioa_cfg:    ioa config struct
 705  *
 706  * Return value:
 707  *      pointer to ipr command struct
 708  **/
 709 static
 710 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
 711 {
 712         struct ipr_cmnd *ipr_cmd = NULL;
 713
 714         if (likely(!list_empty(&hrrq->hrrq_free_q))) {
 715                 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
 716                         struct ipr_cmnd, queue);
 717                 list_del(&ipr_cmd->queue);
 718         }
 719
 720
 721         return ipr_cmd;
 722 }
 723
 724 /**
 725  * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
 726  * @ioa_cfg:    ioa config struct
 727  *
 728  * Return value:
 729  *      pointer to ipr command struct
 730  **/
 731 static
 732 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
 733 {
 734         struct ipr_cmnd *ipr_cmd =
 735                 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
 736         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
 737         return ipr_cmd;
 738 }
 739
 740 /**
 741  * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
 742  * @ioa_cfg:    ioa config struct
 743  * @clr_ints:     interrupts to clear
 744  *
 745  * This function masks all interrupts on the adapter, then clears the
 746  * interrupts specified in the mask
 747  *
 748  * Return value:
 749  *      none
 750  **/
 751 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
 752                                           u32 clr_ints)
 753 {
 754         volatile u32 int_reg;
 755         int i;
 756
 757         /* Stop new interrupts */
 758         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
 759                 spin_lock(&ioa_cfg->hrrq[i]._lock);
 760                 ioa_cfg->hrrq[i].allow_interrupts = 0;
 761                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
 762         }
 763         wmb();
 764
 765         /* Set interrupt mask to stop all new interrupts */
 766         if (ioa_cfg->sis64)
 767                 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 768         else
 769                 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
 770
 771         /* Clear any pending interrupts */
 772         if (ioa_cfg->sis64)
 773                 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
 774         writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
 775         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
 776 }
 777
 778 /**
 779  * ipr_save_pcix_cmd_reg - Save PCI-X command register
 780  * @ioa_cfg:    ioa config struct
 781  *
 782  * Return value:
 783  *      0 on success / -EIO on failure
 784  **/
 785 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 786 {
 787         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 788
 789         if (pcix_cmd_reg == 0)
 790                 return 0;
 791
 792         if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 793                                  &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 794                 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
 795                 return -EIO;
 796         }
 797
 798         ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
 799         return 0;
 800 }
 801
 802 /**
 803  * ipr_set_pcix_cmd_reg - Setup PCI-X command register
 804  * @ioa_cfg:    ioa config struct
 805  *
 806  * Return value:
 807  *      0 on success / -EIO on failure
 808  **/
 809 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
 810 {
 811         int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
 812
 813         if (pcix_cmd_reg) {
 814                 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
 815                                           ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
 816                         dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
 817                         return -EIO;
 818                 }
 819         }
 820
 821         return 0;
 822 }
 823
 824 /**
 825  * __ipr_sata_eh_done - done function for aborted SATA commands
 826  * @ipr_cmd:    ipr command struct
 827  *
 828  * This function is invoked for ops generated to SATA
 829  * devices which are being aborted.
 830  *
 831  * Return value:
 832  *      none
 833  **/
 834 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 835 {
 836         struct ata_queued_cmd *qc = ipr_cmd->qc;
 837         struct ipr_sata_port *sata_port = qc->ap->private_data;
 838
 839         qc->err_mask |= AC_ERR_OTHER;
 840         sata_port->ioasa.status |= ATA_BUSY;
 841         ata_qc_complete(qc);
 842         if (ipr_cmd->eh_comp)
 843                 complete(ipr_cmd->eh_comp);
 844         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 845 }
 846
 847 /**
 848  * ipr_sata_eh_done - done function for aborted SATA commands
 849  * @ipr_cmd:    ipr command struct
 850  *
 851  * This function is invoked for ops generated to SATA
 852  * devices which are being aborted.
 853  *
 854  * Return value:
 855  *      none
 856  **/
 857 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
 858 {
 859         struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
 860         unsigned long hrrq_flags;
 861
 862         spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
 863         __ipr_sata_eh_done(ipr_cmd);
 864         spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
 865 }
 866
 867 /**
 868  * __ipr_scsi_eh_done - mid-layer done function for aborted ops
 869  * @ipr_cmd:    ipr command struct
 870  *
 871  * This function is invoked by the interrupt handler for
 872  * ops generated by the SCSI mid-layer which are being aborted.
 873  *
 874  * Return value:
 875  *      none
 876  **/
 877 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 878 {
 879         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
 880
 881         scsi_cmd->result |= (DID_ERROR << 16);
 882
 883         scsi_dma_unmap(ipr_cmd->scsi_cmd);
 884         scsi_cmd->scsi_done(scsi_cmd);
 885         if (ipr_cmd->eh_comp)
 886                 complete(ipr_cmd->eh_comp);
 887         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
 888 }
 889
 890 /**
 891  * ipr_scsi_eh_done - mid-layer done function for aborted ops
 892  * @ipr_cmd:    ipr command struct
 893  *
 894  * This function is invoked by the interrupt handler for
 895  * ops generated by the SCSI mid-layer which are being aborted.
 896  *
 897  * Return value:
 898  *      none
 899  **/
 900 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
 901 {
 902         unsigned long hrrq_flags;
 903         struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
 904
 905         spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
 906         __ipr_scsi_eh_done(ipr_cmd);
 907         spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
 908 }
 909
 910 /**
 911  * ipr_fail_all_ops - Fails all outstanding ops.
 912  * @ioa_cfg:    ioa config struct
 913  *
 914  * This function fails all outstanding ops.
 915  *
 916  * Return value:
 917  *      none
 918  **/
 919 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
 920 {
 921         struct ipr_cmnd *ipr_cmd, *temp;
 922         struct ipr_hrr_queue *hrrq;
 923
 924         ENTER;
 925         for_each_hrrq(hrrq, ioa_cfg) {
 926                 spin_lock(&hrrq->_lock);
 927                 list_for_each_entry_safe(ipr_cmd,
 928                                         temp, &hrrq->hrrq_pending_q, queue) {
 929                         list_del(&ipr_cmd->queue);
 930
 931                         ipr_cmd->s.ioasa.hdr.ioasc =
 932                                 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
 933                         ipr_cmd->s.ioasa.hdr.ilid =
 934                                 cpu_to_be32(IPR_DRIVER_ILID);
 935
 936                         if (ipr_cmd->scsi_cmd)
 937                                 ipr_cmd->done = __ipr_scsi_eh_done;
 938                         else if (ipr_cmd->qc)
 939                                 ipr_cmd->done = __ipr_sata_eh_done;
 940
 941                         ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
 942                                      IPR_IOASC_IOA_WAS_RESET);
 943                         del_timer(&ipr_cmd->timer);
 944                         ipr_cmd->done(ipr_cmd);
 945                 }
 946                 spin_unlock(&hrrq->_lock);
 947         }
 948         LEAVE;
 949 }
 950
 951 /**
 952  * ipr_send_command -  Send driver initiated requests.
 953  * @ipr_cmd:            ipr command struct
 954  *
 955  * This function sends a command to the adapter using the correct write call.
 956  * In the case of sis64, calculate the ioarcb size required. Then or in the
 957  * appropriate bits.
 958  *
 959  * Return value:
 960  *      none
 961  **/
 962 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
 963 {
 964         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
 965         dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
 966
 967         if (ioa_cfg->sis64) {
 968                 /* The default size is 256 bytes */
 969                 send_dma_addr |= 0x1;
 970
 971                 /* If the number of ioadls * size of ioadl > 128 bytes,
 972                    then use a 512 byte ioarcb */
 973                 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
 974                         send_dma_addr |= 0x4;
 975                 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 976         } else
 977                 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
 978 }
 979
 980 /**
 981  * ipr_do_req -  Send driver initiated requests.
 982  * @ipr_cmd:            ipr command struct
 983  * @done:                       done function
 984  * @timeout_func:       timeout function
 985  * @timeout:            timeout value
 986  *
 987  * This function sends the specified command to the adapter with the
 988  * timeout given. The done function is invoked on command completion.
 989  *
 990  * Return value:
 991  *      none
 992  **/
 993 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
 994                        void (*done) (struct ipr_cmnd *),
 995                        void (*timeout_func) (struct timer_list *), u32 timeout)
 996 {
 997         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
 998
 999         ipr_cmd->done = done;
1000
1001         ipr_cmd->timer.expires = jiffies + timeout;
1002         ipr_cmd->timer.function = timeout_func;
1003
1004         add_timer(&ipr_cmd->timer);
1005
1006         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
1007
1008         ipr_send_command(ipr_cmd);
1009 }
1010
1011 /**
1012  * ipr_internal_cmd_done - Op done function for an internally generated op.
1013  * @ipr_cmd:    ipr command struct
1014  *
1015  * This function is the op done function for an internally generated,
1016  * blocking op. It simply wakes the sleeping thread.
1017  *
1018  * Return value:
1019  *      none
1020  **/
1021 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
1022 {
1023         if (ipr_cmd->sibling)
1024                 ipr_cmd->sibling = NULL;
1025         else
1026                 complete(&ipr_cmd->completion);
1027 }
1028
1029 /**
1030  * ipr_init_ioadl - initialize the ioadl for the correct SIS type
1031  * @ipr_cmd:    ipr command struct
1032  * @dma_addr:   dma address
1033  * @len:        transfer length
1034  * @flags:      ioadl flag value
1035  *
1036  * This function initializes an ioadl in the case where there is only a single
1037  * descriptor.
1038  *
1039  * Return value:
1040  *      nothing
1041  **/
1042 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1043                            u32 len, int flags)
1044 {
1045         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1046         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1047
1048         ipr_cmd->dma_use_sg = 1;
1049
1050         if (ipr_cmd->ioa_cfg->sis64) {
1051                 ioadl64->flags = cpu_to_be32(flags);
1052                 ioadl64->data_len = cpu_to_be32(len);
1053                 ioadl64->address = cpu_to_be64(dma_addr);
1054
1055                 ipr_cmd->ioarcb.ioadl_len =
1056                         cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1057                 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1058         } else {
1059                 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1060                 ioadl->address = cpu_to_be32(dma_addr);
1061
1062                 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1063                         ipr_cmd->ioarcb.read_ioadl_len =
1064                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1065                         ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1066                 } else {
1067                         ipr_cmd->ioarcb.ioadl_len =
1068                                 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1069                         ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1070                 }
1071         }
1072 }
1073
1074 /**
1075  * ipr_send_blocking_cmd - Send command and sleep on its completion.
1076  * @ipr_cmd:    ipr command struct
1077  * @timeout_func:       function to invoke if command times out
1078  * @timeout:    timeout
1079  *
1080  * Return value:
1081  *      none
1082  **/
1083 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1084                                   void (*timeout_func) (struct timer_list *),
1085                                   u32 timeout)
1086 {
1087         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1088
1089         init_completion(&ipr_cmd->completion);
1090         ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1091
1092         spin_unlock_irq(ioa_cfg->host->host_lock);
1093         wait_for_completion(&ipr_cmd->completion);
1094         spin_lock_irq(ioa_cfg->host->host_lock);
1095 }
1096
1097 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1098 {
1099         unsigned int hrrq;
1100
1101         if (ioa_cfg->hrrq_num == 1)
1102                 hrrq = 0;
1103         else {
1104                 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1105                 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1106         }
1107         return hrrq;
1108 }
1109
1110 /**
1111  * ipr_send_hcam - Send an HCAM to the adapter.
1112  * @ioa_cfg:    ioa config struct
1113  * @type:               HCAM type
1114  * @hostrcb:    hostrcb struct
1115  *
1116  * This function will send a Host Controlled Async command to the adapter.
1117  * If HCAMs are currently not allowed to be issued to the adapter, it will
1118  * place the hostrcb on the free queue.
1119  *
1120  * Return value:
1121  *      none
1122  **/
1123 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1124                           struct ipr_hostrcb *hostrcb)
1125 {
1126         struct ipr_cmnd *ipr_cmd;
1127         struct ipr_ioarcb *ioarcb;
1128
1129         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1130                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1131                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1132                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1133
1134                 ipr_cmd->u.hostrcb = hostrcb;
1135                 ioarcb = &ipr_cmd->ioarcb;
1136
1137                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1138                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1139                 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1140                 ioarcb->cmd_pkt.cdb[1] = type;
1141                 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1142                 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1143
1144                 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1145                                sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1146
1147                 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1148                         ipr_cmd->done = ipr_process_ccn;
1149                 else
1150                         ipr_cmd->done = ipr_process_error;
1151
1152                 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1153
1154                 ipr_send_command(ipr_cmd);
1155         } else {
1156                 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1157         }
1158 }
1159
1160 /**
1161  * ipr_update_ata_class - Update the ata class in the resource entry
1162  * @res:        resource entry struct
1163  * @proto:      cfgte device bus protocol value
1164  *
1165  * Return value:
1166  *      none
1167  **/
1168 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1169 {
1170         switch (proto) {
1171         case IPR_PROTO_SATA:
1172         case IPR_PROTO_SAS_STP:
1173                 res->ata_class = ATA_DEV_ATA;
1174                 break;
1175         case IPR_PROTO_SATA_ATAPI:
1176         case IPR_PROTO_SAS_STP_ATAPI:
1177                 res->ata_class = ATA_DEV_ATAPI;
1178                 break;
1179         default:
1180                 res->ata_class = ATA_DEV_UNKNOWN;
1181                 break;
1182         };
1183 }
1184
1185 /**
1186  * ipr_init_res_entry - Initialize a resource entry struct.
1187  * @res:        resource entry struct
1188  * @cfgtew:     config table entry wrapper struct
1189  *
1190  * Return value:
1191  *      none
1192  **/
1193 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1194                                struct ipr_config_table_entry_wrapper *cfgtew)
1195 {
1196         int found = 0;
1197         unsigned int proto;
1198         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1199         struct ipr_resource_entry *gscsi_res = NULL;
1200
1201         res->needs_sync_complete = 0;
1202         res->in_erp = 0;
1203         res->add_to_ml = 0;
1204         res->del_from_ml = 0;
1205         res->resetting_device = 0;
1206         res->reset_occurred = 0;
1207         res->sdev = NULL;
1208         res->sata_port = NULL;
1209
1210         if (ioa_cfg->sis64) {
1211                 proto = cfgtew->u.cfgte64->proto;
1212                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1213                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1214                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1215                 res->type = cfgtew->u.cfgte64->res_type;
1216
1217                 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1218                         sizeof(res->res_path));
1219
1220                 res->bus = 0;
1221                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1222                         sizeof(res->dev_lun.scsi_lun));
1223                 res->lun = scsilun_to_int(&res->dev_lun);
1224
1225                 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1226                         list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1227                                 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1228                                         found = 1;
1229                                         res->target = gscsi_res->target;
1230                                         break;
1231                                 }
1232                         }
1233                         if (!found) {
1234                                 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1235                                                                   ioa_cfg->max_devs_supported);
1236                                 set_bit(res->target, ioa_cfg->target_ids);
1237                         }
1238                 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1239                         res->bus = IPR_IOAFP_VIRTUAL_BUS;
1240                         res->target = 0;
1241                 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1242                         res->bus = IPR_ARRAY_VIRTUAL_BUS;
1243                         res->target = find_first_zero_bit(ioa_cfg->array_ids,
1244                                                           ioa_cfg->max_devs_supported);
1245                         set_bit(res->target, ioa_cfg->array_ids);
1246                 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1247                         res->bus = IPR_VSET_VIRTUAL_BUS;
1248                         res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1249                                                           ioa_cfg->max_devs_supported);
1250                         set_bit(res->target, ioa_cfg->vset_ids);
1251                 } else {
1252                         res->target = find_first_zero_bit(ioa_cfg->target_ids,
1253                                                           ioa_cfg->max_devs_supported);
1254                         set_bit(res->target, ioa_cfg->target_ids);
1255                 }
1256         } else {
1257                 proto = cfgtew->u.cfgte->proto;
1258                 res->qmodel = IPR_QUEUEING_MODEL(res);
1259                 res->flags = cfgtew->u.cfgte->flags;
1260                 if (res->flags & IPR_IS_IOA_RESOURCE)
1261                         res->type = IPR_RES_TYPE_IOAFP;
1262                 else
1263                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1264
1265                 res->bus = cfgtew->u.cfgte->res_addr.bus;
1266                 res->target = cfgtew->u.cfgte->res_addr.target;
1267                 res->lun = cfgtew->u.cfgte->res_addr.lun;
1268                 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1269         }
1270
1271         ipr_update_ata_class(res, proto);
1272 }
1273
1274 /**
1275  * ipr_is_same_device - Determine if two devices are the same.
1276  * @res:        resource entry struct
1277  * @cfgtew:     config table entry wrapper struct
1278  *
1279  * Return value:
1280  *      1 if the devices are the same / 0 otherwise
1281  **/
1282 static int ipr_is_same_device(struct ipr_resource_entry *res,
1283                               struct ipr_config_table_entry_wrapper *cfgtew)
1284 {
1285         if (res->ioa_cfg->sis64) {
1286                 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1287                                         sizeof(cfgtew->u.cfgte64->dev_id)) &&
1288                         !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1289                                         sizeof(cfgtew->u.cfgte64->lun))) {
1290                         return 1;
1291                 }
1292         } else {
1293                 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1294                     res->target == cfgtew->u.cfgte->res_addr.target &&
1295                     res->lun == cfgtew->u.cfgte->res_addr.lun)
1296                         return 1;
1297         }
1298
1299         return 0;
1300 }
1301
1302 /**
1303  * __ipr_format_res_path - Format the resource path for printing.
1304  * @res_path:   resource path
1305  * @buf:        buffer
1306  * @len:        length of buffer provided
1307  *
1308  * Return value:
1309  *      pointer to buffer
1310  **/
1311 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1312 {
1313         int i;
1314         char *p = buffer;
1315
1316         *p = '\0';
1317         p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1318         for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1319                 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1320
1321         return buffer;
1322 }
1323
1324 /**
1325  * ipr_format_res_path - Format the resource path for printing.
1326  * @ioa_cfg:    ioa config struct
1327  * @res_path:   resource path
1328  * @buf:        buffer
1329  * @len:        length of buffer provided
1330  *
1331  * Return value:
1332  *      pointer to buffer
1333  **/
1334 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1335                                  u8 *res_path, char *buffer, int len)
1336 {
1337         char *p = buffer;
1338
1339         *p = '\0';
1340         p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1341         __ipr_format_res_path(res_path, p, len - (buffer - p));
1342         return buffer;
1343 }
1344
1345 /**
1346  * ipr_update_res_entry - Update the resource entry.
1347  * @res:        resource entry struct
1348  * @cfgtew:     config table entry wrapper struct
1349  *
1350  * Return value:
1351  *      none
1352  **/
1353 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1354                                  struct ipr_config_table_entry_wrapper *cfgtew)
1355 {
1356         char buffer[IPR_MAX_RES_PATH_LENGTH];
1357         unsigned int proto;
1358         int new_path = 0;
1359
1360         if (res->ioa_cfg->sis64) {
1361                 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1362                 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1363                 res->type = cfgtew->u.cfgte64->res_type;
1364
1365                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1366                         sizeof(struct ipr_std_inq_data));
1367
1368                 res->qmodel = IPR_QUEUEING_MODEL64(res);
1369                 proto = cfgtew->u.cfgte64->proto;
1370                 res->res_handle = cfgtew->u.cfgte64->res_handle;
1371                 res->dev_id = cfgtew->u.cfgte64->dev_id;
1372
1373                 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1374                         sizeof(res->dev_lun.scsi_lun));
1375
1376                 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1377                                         sizeof(res->res_path))) {
1378                         memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1379                                 sizeof(res->res_path));
1380                         new_path = 1;
1381                 }
1382
1383                 if (res->sdev && new_path)
1384                         sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1385                                     ipr_format_res_path(res->ioa_cfg,
1386                                         res->res_path, buffer, sizeof(buffer)));
1387         } else {
1388                 res->flags = cfgtew->u.cfgte->flags;
1389                 if (res->flags & IPR_IS_IOA_RESOURCE)
1390                         res->type = IPR_RES_TYPE_IOAFP;
1391                 else
1392                         res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1393
1394                 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1395                         sizeof(struct ipr_std_inq_data));
1396
1397                 res->qmodel = IPR_QUEUEING_MODEL(res);
1398                 proto = cfgtew->u.cfgte->proto;
1399                 res->res_handle = cfgtew->u.cfgte->res_handle;
1400         }
1401
1402         ipr_update_ata_class(res, proto);
1403 }
1404
1405 /**
1406  * ipr_clear_res_target - Clear the bit in the bit map representing the target
1407  *                        for the resource.
1408  * @res:        resource entry struct
1409  * @cfgtew:     config table entry wrapper struct
1410  *
1411  * Return value:
1412  *      none
1413  **/
1414 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1415 {
1416         struct ipr_resource_entry *gscsi_res = NULL;
1417         struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1418
1419         if (!ioa_cfg->sis64)
1420                 return;
1421
1422         if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1423                 clear_bit(res->target, ioa_cfg->array_ids);
1424         else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1425                 clear_bit(res->target, ioa_cfg->vset_ids);
1426         else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1427                 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1428                         if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1429                                 return;
1430                 clear_bit(res->target, ioa_cfg->target_ids);
1431
1432         } else if (res->bus == 0)
1433                 clear_bit(res->target, ioa_cfg->target_ids);
1434 }
1435
1436 /**
1437  * ipr_handle_config_change - Handle a config change from the adapter
1438  * @ioa_cfg:    ioa config struct
1439  * @hostrcb:    hostrcb
1440  *
1441  * Return value:
1442  *      none
1443  **/
1444 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1445                                      struct ipr_hostrcb *hostrcb)
1446 {
1447         struct ipr_resource_entry *res = NULL;
1448         struct ipr_config_table_entry_wrapper cfgtew;
1449         __be32 cc_res_handle;
1450
1451         u32 is_ndn = 1;
1452
1453         if (ioa_cfg->sis64) {
1454                 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1455                 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1456         } else {
1457                 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1458                 cc_res_handle = cfgtew.u.cfgte->res_handle;
1459         }
1460
1461         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1462                 if (res->res_handle == cc_res_handle) {
1463                         is_ndn = 0;
1464                         break;
1465                 }
1466         }
1467
1468         if (is_ndn) {
1469                 if (list_empty(&ioa_cfg->free_res_q)) {
1470                         ipr_send_hcam(ioa_cfg,
1471                                       IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1472                                       hostrcb);
1473                         return;
1474                 }
1475
1476                 res = list_entry(ioa_cfg->free_res_q.next,
1477                                  struct ipr_resource_entry, queue);
1478
1479                 list_del(&res->queue);
1480                 ipr_init_res_entry(res, &cfgtew);
1481                 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1482         }
1483
1484         ipr_update_res_entry(res, &cfgtew);
1485
1486         if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1487                 if (res->sdev) {
1488                         res->del_from_ml = 1;
1489                         res->res_handle = IPR_INVALID_RES_HANDLE;
1490                         schedule_work(&ioa_cfg->work_q);
1491                 } else {
1492                         ipr_clear_res_target(res);
1493                         list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1494                 }
1495         } else if (!res->sdev || res->del_from_ml) {
1496                 res->add_to_ml = 1;
1497                 schedule_work(&ioa_cfg->work_q);
1498         }
1499
1500         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1501 }
1502
1503 /**
1504  * ipr_process_ccn - Op done function for a CCN.
1505  * @ipr_cmd:    ipr command struct
1506  *
1507  * This function is the op done function for a configuration
1508  * change notification host controlled async from the adapter.
1509  *
1510  * Return value:
1511  *      none
1512  **/
1513 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1514 {
1515         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1516         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1517         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1518
1519         list_del_init(&hostrcb->queue);
1520         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1521
1522         if (ioasc) {
1523                 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1524                     ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1525                         dev_err(&ioa_cfg->pdev->dev,
1526                                 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1527
1528                 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1529         } else {
1530                 ipr_handle_config_change(ioa_cfg, hostrcb);
1531         }
1532 }
1533
1534 /**
1535  * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1536  * @i:          index into buffer
1537  * @buf:                string to modify
1538  *
1539  * This function will strip all trailing whitespace, pad the end
1540  * of the string with a single space, and NULL terminate the string.
1541  *
1542  * Return value:
1543  *      new length of string
1544  **/
1545 static int strip_and_pad_whitespace(int i, char *buf)
1546 {
1547         while (i && buf[i] == ' ')
1548                 i--;
1549         buf[i+1] = ' ';
1550         buf[i+2] = '\0';
1551         return i + 2;
1552 }
1553
1554 /**
1555  * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1556  * @prefix:             string to print at start of printk
1557  * @hostrcb:    hostrcb pointer
1558  * @vpd:                vendor/product id/sn struct
1559  *
1560  * Return value:
1561  *      none
1562  **/
1563 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1564                                 struct ipr_vpd *vpd)
1565 {
1566         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1567         int i = 0;
1568
1569         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1570         i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1571
1572         memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1573         i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1574
1575         memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1576         buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1577
1578         ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1579 }
1580
1581 /**
1582  * ipr_log_vpd - Log the passed VPD to the error log.
1583  * @vpd:                vendor/product id/sn struct
1584  *
1585  * Return value:
1586  *      none
1587  **/
1588 static void ipr_log_vpd(struct ipr_vpd *vpd)
1589 {
1590         char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1591                     + IPR_SERIAL_NUM_LEN];
1592
1593         memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1594         memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1595                IPR_PROD_ID_LEN);
1596         buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1597         ipr_err("Vendor/Product ID: %s\n", buffer);
1598
1599         memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1600         buffer[IPR_SERIAL_NUM_LEN] = '\0';
1601         ipr_err("    Serial Number: %s\n", buffer);
1602 }
1603
1604 /**
1605  * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1606  * @prefix:             string to print at start of printk
1607  * @hostrcb:    hostrcb pointer
1608  * @vpd:                vendor/product id/sn/wwn struct
1609  *
1610  * Return value:
1611  *      none
1612  **/
1613 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1614                                     struct ipr_ext_vpd *vpd)
1615 {
1616         ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1617         ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1618                      be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1619 }
1620
1621 /**
1622  * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1623  * @vpd:                vendor/product id/sn/wwn struct
1624  *
1625  * Return value:
1626  *      none
1627  **/
1628 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1629 {
1630         ipr_log_vpd(&vpd->vpd);
1631         ipr_err("    WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1632                 be32_to_cpu(vpd->wwid[1]));
1633 }
1634
1635 /**
1636  * ipr_log_enhanced_cache_error - Log a cache error.
1637  * @ioa_cfg:    ioa config struct
1638  * @hostrcb:    hostrcb struct
1639  *
1640  * Return value:
1641  *      none
1642  **/
1643 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1644                                          struct ipr_hostrcb *hostrcb)
1645 {
1646         struct ipr_hostrcb_type_12_error *error;
1647
1648         if (ioa_cfg->sis64)
1649                 error = &hostrcb->hcam.u.error64.u.type_12_error;
1650         else
1651                 error = &hostrcb->hcam.u.error.u.type_12_error;
1652
1653         ipr_err("-----Current Configuration-----\n");
1654         ipr_err("Cache Directory Card Information:\n");
1655         ipr_log_ext_vpd(&error->ioa_vpd);
1656         ipr_err("Adapter Card Information:\n");
1657         ipr_log_ext_vpd(&error->cfc_vpd);
1658
1659         ipr_err("-----Expected Configuration-----\n");
1660         ipr_err("Cache Directory Card Information:\n");
1661         ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1662         ipr_err("Adapter Card Information:\n");
1663         ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1664
1665         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1666                      be32_to_cpu(error->ioa_data[0]),
1667                      be32_to_cpu(error->ioa_data[1]),
1668                      be32_to_cpu(error->ioa_data[2]));
1669 }
1670
1671 /**
1672  * ipr_log_cache_error - Log a cache error.
1673  * @ioa_cfg:    ioa config struct
1674  * @hostrcb:    hostrcb struct
1675  *
1676  * Return value:
1677  *      none
1678  **/
1679 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1680                                 struct ipr_hostrcb *hostrcb)
1681 {
1682         struct ipr_hostrcb_type_02_error *error =
1683                 &hostrcb->hcam.u.error.u.type_02_error;
1684
1685         ipr_err("-----Current Configuration-----\n");
1686         ipr_err("Cache Directory Card Information:\n");
1687         ipr_log_vpd(&error->ioa_vpd);
1688         ipr_err("Adapter Card Information:\n");
1689         ipr_log_vpd(&error->cfc_vpd);
1690
1691         ipr_err("-----Expected Configuration-----\n");
1692         ipr_err("Cache Directory Card Information:\n");
1693         ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1694         ipr_err("Adapter Card Information:\n");
1695         ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1696
1697         ipr_err("Additional IOA Data: %08X %08X %08X\n",
1698                      be32_to_cpu(error->ioa_data[0]),
1699                      be32_to_cpu(error->ioa_data[1]),
1700                      be32_to_cpu(error->ioa_data[2]));
1701 }
1702
1703 /**
1704  * ipr_log_enhanced_config_error - Log a configuration error.
1705  * @ioa_cfg:    ioa config struct
1706  * @hostrcb:    hostrcb struct
1707  *
1708  * Return value:
1709  *      none
1710  **/
1711 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1712                                           struct ipr_hostrcb *hostrcb)
1713 {
1714         int errors_logged, i;
1715         struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1716         struct ipr_hostrcb_type_13_error *error;
1717
1718         error = &hostrcb->hcam.u.error.u.type_13_error;
1719         errors_logged = be32_to_cpu(error->errors_logged);
1720
1721         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1722                 be32_to_cpu(error->errors_detected), errors_logged);
1723
1724         dev_entry = error->dev;
1725
1726         for (i = 0; i < errors_logged; i++, dev_entry++) {
1727                 ipr_err_separator;
1728
1729                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1730                 ipr_log_ext_vpd(&dev_entry->vpd);
1731
1732                 ipr_err("-----New Device Information-----\n");
1733                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1734
1735                 ipr_err("Cache Directory Card Information:\n");
1736                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1737
1738                 ipr_err("Adapter Card Information:\n");
1739                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1740         }
1741 }
1742
1743 /**
1744  * ipr_log_sis64_config_error - Log a device error.
1745  * @ioa_cfg:    ioa config struct
1746  * @hostrcb:    hostrcb struct
1747  *
1748  * Return value:
1749  *      none
1750  **/
1751 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1752                                        struct ipr_hostrcb *hostrcb)
1753 {
1754         int errors_logged, i;
1755         struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1756         struct ipr_hostrcb_type_23_error *error;
1757         char buffer[IPR_MAX_RES_PATH_LENGTH];
1758
1759         error = &hostrcb->hcam.u.error64.u.type_23_error;
1760         errors_logged = be32_to_cpu(error->errors_logged);
1761
1762         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1763                 be32_to_cpu(error->errors_detected), errors_logged);
1764
1765         dev_entry = error->dev;
1766
1767         for (i = 0; i < errors_logged; i++, dev_entry++) {
1768                 ipr_err_separator;
1769
1770                 ipr_err("Device %d : %s", i + 1,
1771                         __ipr_format_res_path(dev_entry->res_path,
1772                                               buffer, sizeof(buffer)));
1773                 ipr_log_ext_vpd(&dev_entry->vpd);
1774
1775                 ipr_err("-----New Device Information-----\n");
1776                 ipr_log_ext_vpd(&dev_entry->new_vpd);
1777
1778                 ipr_err("Cache Directory Card Information:\n");
1779                 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1780
1781                 ipr_err("Adapter Card Information:\n");
1782                 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1783         }
1784 }
1785
1786 /**
1787  * ipr_log_config_error - Log a configuration error.
1788  * @ioa_cfg:    ioa config struct
1789  * @hostrcb:    hostrcb struct
1790  *
1791  * Return value:
1792  *      none
1793  **/
1794 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1795                                  struct ipr_hostrcb *hostrcb)
1796 {
1797         int errors_logged, i;
1798         struct ipr_hostrcb_device_data_entry *dev_entry;
1799         struct ipr_hostrcb_type_03_error *error;
1800
1801         error = &hostrcb->hcam.u.error.u.type_03_error;
1802         errors_logged = be32_to_cpu(error->errors_logged);
1803
1804         ipr_err("Device Errors Detected/Logged: %d/%d\n",
1805                 be32_to_cpu(error->errors_detected), errors_logged);
1806
1807         dev_entry = error->dev;
1808
1809         for (i = 0; i < errors_logged; i++, dev_entry++) {
1810                 ipr_err_separator;
1811
1812                 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1813                 ipr_log_vpd(&dev_entry->vpd);
1814
1815                 ipr_err("-----New Device Information-----\n");
1816                 ipr_log_vpd(&dev_entry->new_vpd);
1817
1818                 ipr_err("Cache Directory Card Information:\n");
1819                 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1820
1821                 ipr_err("Adapter Card Information:\n");
1822                 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1823
1824                 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1825                         be32_to_cpu(dev_entry->ioa_data[0]),
1826                         be32_to_cpu(dev_entry->ioa_data[1]),
1827                         be32_to_cpu(dev_entry->ioa_data[2]),
1828                         be32_to_cpu(dev_entry->ioa_data[3]),
1829                         be32_to_cpu(dev_entry->ioa_data[4]));
1830         }
1831 }
1832
1833 /**
1834  * ipr_log_enhanced_array_error - Log an array configuration error.
1835  * @ioa_cfg:    ioa config struct
1836  * @hostrcb:    hostrcb struct
1837  *
1838  * Return value:
1839  *      none
1840  **/
1841 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1842                                          struct ipr_hostrcb *hostrcb)
1843 {
1844         int i, num_entries;
1845         struct ipr_hostrcb_type_14_error *error;
1846         struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1847         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1848
1849         error = &hostrcb->hcam.u.error.u.type_14_error;
1850
1851         ipr_err_separator;
1852
1853         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1854                 error->protection_level,
1855                 ioa_cfg->host->host_no,
1856                 error->last_func_vset_res_addr.bus,
1857                 error->last_func_vset_res_addr.target,
1858                 error->last_func_vset_res_addr.lun);
1859
1860         ipr_err_separator;
1861
1862         array_entry = error->array_member;
1863         num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1864                             ARRAY_SIZE(error->array_member));
1865
1866         for (i = 0; i < num_entries; i++, array_entry++) {
1867                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1868                         continue;
1869
1870                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1871                         ipr_err("Exposed Array Member %d:\n", i);
1872                 else
1873                         ipr_err("Array Member %d:\n", i);
1874
1875                 ipr_log_ext_vpd(&array_entry->vpd);
1876                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1877                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1878                                  "Expected Location");
1879
1880                 ipr_err_separator;
1881         }
1882 }
1883
1884 /**
1885  * ipr_log_array_error - Log an array configuration error.
1886  * @ioa_cfg:    ioa config struct
1887  * @hostrcb:    hostrcb struct
1888  *
1889  * Return value:
1890  *      none
1891  **/
1892 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1893                                 struct ipr_hostrcb *hostrcb)
1894 {
1895         int i;
1896         struct ipr_hostrcb_type_04_error *error;
1897         struct ipr_hostrcb_array_data_entry *array_entry;
1898         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1899
1900         error = &hostrcb->hcam.u.error.u.type_04_error;
1901
1902         ipr_err_separator;
1903
1904         ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1905                 error->protection_level,
1906                 ioa_cfg->host->host_no,
1907                 error->last_func_vset_res_addr.bus,
1908                 error->last_func_vset_res_addr.target,
1909                 error->last_func_vset_res_addr.lun);
1910
1911         ipr_err_separator;
1912
1913         array_entry = error->array_member;
1914
1915         for (i = 0; i < 18; i++) {
1916                 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1917                         continue;
1918
1919                 if (be32_to_cpu(error->exposed_mode_adn) == i)
1920                         ipr_err("Exposed Array Member %d:\n", i);
1921                 else
1922                         ipr_err("Array Member %d:\n", i);
1923
1924                 ipr_log_vpd(&array_entry->vpd);
1925
1926                 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1927                 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1928                                  "Expected Location");
1929
1930                 ipr_err_separator;
1931
1932                 if (i == 9)
1933                         array_entry = error->array_member2;
1934                 else
1935                         array_entry++;
1936         }
1937 }
1938
1939 /**
1940  * ipr_log_hex_data - Log additional hex IOA error data.
1941  * @ioa_cfg:    ioa config struct
1942  * @data:               IOA error data
1943  * @len:                data length
1944  *
1945  * Return value:
1946  *      none
1947  **/
1948 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1949 {
1950         int i;
1951
1952         if (len == 0)
1953                 return;
1954
1955         if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1956                 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1957
1958         for (i = 0; i < len / 4; i += 4) {
1959                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1960                         be32_to_cpu(data[i]),
1961                         be32_to_cpu(data[i+1]),
1962                         be32_to_cpu(data[i+2]),
1963                         be32_to_cpu(data[i+3]));
1964         }
1965 }
1966
1967 /**
1968  * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1969  * @ioa_cfg:    ioa config struct
1970  * @hostrcb:    hostrcb struct
1971  *
1972  * Return value:
1973  *      none
1974  **/
1975 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1976                                             struct ipr_hostrcb *hostrcb)
1977 {
1978         struct ipr_hostrcb_type_17_error *error;
1979
1980         if (ioa_cfg->sis64)
1981                 error = &hostrcb->hcam.u.error64.u.type_17_error;
1982         else
1983                 error = &hostrcb->hcam.u.error.u.type_17_error;
1984
1985         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1986         strim(error->failure_reason);
1987
1988         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1989                      be32_to_cpu(hostrcb->hcam.u.error.prc));
1990         ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1991         ipr_log_hex_data(ioa_cfg, error->data,
1992                          be32_to_cpu(hostrcb->hcam.length) -
1993                          (offsetof(struct ipr_hostrcb_error, u) +
1994                           offsetof(struct ipr_hostrcb_type_17_error, data)));
1995 }
1996
1997 /**
1998  * ipr_log_dual_ioa_error - Log a dual adapter error.
1999  * @ioa_cfg:    ioa config struct
2000  * @hostrcb:    hostrcb struct
2001  *
2002  * Return value:
2003  *      none
2004  **/
2005 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
2006                                    struct ipr_hostrcb *hostrcb)
2007 {
2008         struct ipr_hostrcb_type_07_error *error;
2009
2010         error = &hostrcb->hcam.u.error.u.type_07_error;
2011         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2012         strim(error->failure_reason);
2013
2014         ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
2015                      be32_to_cpu(hostrcb->hcam.u.error.prc));
2016         ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
2017         ipr_log_hex_data(ioa_cfg, error->data,
2018                          be32_to_cpu(hostrcb->hcam.length) -
2019                          (offsetof(struct ipr_hostrcb_error, u) +
2020                           offsetof(struct ipr_hostrcb_type_07_error, data)));
2021 }
2022
2023 static const struct {
2024         u8 active;
2025         char *desc;
2026 } path_active_desc[] = {
2027         { IPR_PATH_NO_INFO, "Path" },
2028         { IPR_PATH_ACTIVE, "Active path" },
2029         { IPR_PATH_NOT_ACTIVE, "Inactive path" }
2030 };
2031
2032 static const struct {
2033         u8 state;
2034         char *desc;
2035 } path_state_desc[] = {
2036         { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
2037         { IPR_PATH_HEALTHY, "is healthy" },
2038         { IPR_PATH_DEGRADED, "is degraded" },
2039         { IPR_PATH_FAILED, "is failed" }
2040 };
2041
2042 /**
2043  * ipr_log_fabric_path - Log a fabric path error
2044  * @hostrcb:    hostrcb struct
2045  * @fabric:             fabric descriptor
2046  *
2047  * Return value:
2048  *      none
2049  **/
2050 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2051                                 struct ipr_hostrcb_fabric_desc *fabric)
2052 {
2053         int i, j;
2054         u8 path_state = fabric->path_state;
2055         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2056         u8 state = path_state & IPR_PATH_STATE_MASK;
2057
2058         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2059                 if (path_active_desc[i].active != active)
2060                         continue;
2061
2062                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2063                         if (path_state_desc[j].state != state)
2064                                 continue;
2065
2066                         if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2067                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2068                                              path_active_desc[i].desc, path_state_desc[j].desc,
2069                                              fabric->ioa_port);
2070                         } else if (fabric->cascaded_expander == 0xff) {
2071                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2072                                              path_active_desc[i].desc, path_state_desc[j].desc,
2073                                              fabric->ioa_port, fabric->phy);
2074                         } else if (fabric->phy == 0xff) {
2075                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2076                                              path_active_desc[i].desc, path_state_desc[j].desc,
2077                                              fabric->ioa_port, fabric->cascaded_expander);
2078                         } else {
2079                                 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2080                                              path_active_desc[i].desc, path_state_desc[j].desc,
2081                                              fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2082                         }
2083                         return;
2084                 }
2085         }
2086
2087         ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2088                 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2089 }
2090
2091 /**
2092  * ipr_log64_fabric_path - Log a fabric path error
2093  * @hostrcb:    hostrcb struct
2094  * @fabric:             fabric descriptor
2095  *
2096  * Return value:
2097  *      none
2098  **/
2099 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2100                                   struct ipr_hostrcb64_fabric_desc *fabric)
2101 {
2102         int i, j;
2103         u8 path_state = fabric->path_state;
2104         u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2105         u8 state = path_state & IPR_PATH_STATE_MASK;
2106         char buffer[IPR_MAX_RES_PATH_LENGTH];
2107
2108         for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2109                 if (path_active_desc[i].active != active)
2110                         continue;
2111
2112                 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2113                         if (path_state_desc[j].state != state)
2114                                 continue;
2115
2116                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2117                                      path_active_desc[i].desc, path_state_desc[j].desc,
2118                                      ipr_format_res_path(hostrcb->ioa_cfg,
2119                                                 fabric->res_path,
2120                                                 buffer, sizeof(buffer)));
2121                         return;
2122                 }
2123         }
2124
2125         ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2126                 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2127                                     buffer, sizeof(buffer)));
2128 }
2129
2130 static const struct {
2131         u8 type;
2132         char *desc;
2133 } path_type_desc[] = {
2134         { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2135         { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2136         { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2137         { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2138 };
2139
2140 static const struct {
2141         u8 status;
2142         char *desc;
2143 } path_status_desc[] = {
2144         { IPR_PATH_CFG_NO_PROB, "Functional" },
2145         { IPR_PATH_CFG_DEGRADED, "Degraded" },
2146         { IPR_PATH_CFG_FAILED, "Failed" },
2147         { IPR_PATH_CFG_SUSPECT, "Suspect" },
2148         { IPR_PATH_NOT_DETECTED, "Missing" },
2149         { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2150 };
2151
2152 static const char *link_rate[] = {
2153         "unknown",
2154         "disabled",
2155         "phy reset problem",
2156         "spinup hold",
2157         "port selector",
2158         "unknown",
2159         "unknown",
2160         "unknown",
2161         "1.5Gbps",
2162         "3.0Gbps",
2163         "unknown",
2164         "unknown",
2165         "unknown",
2166         "unknown",
2167         "unknown",
2168         "unknown"
2169 };
2170
2171 /**
2172  * ipr_log_path_elem - Log a fabric path element.
2173  * @hostrcb:    hostrcb struct
2174  * @cfg:                fabric path element struct
2175  *
2176  * Return value:
2177  *      none
2178  **/
2179 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2180                               struct ipr_hostrcb_config_element *cfg)
2181 {
2182         int i, j;
2183         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2184         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2185
2186         if (type == IPR_PATH_CFG_NOT_EXIST)
2187                 return;
2188
2189         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2190                 if (path_type_desc[i].type != type)
2191                         continue;
2192
2193                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2194                         if (path_status_desc[j].status != status)
2195                                 continue;
2196
2197                         if (type == IPR_PATH_CFG_IOA_PORT) {
2198                                 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2199                                              path_status_desc[j].desc, path_type_desc[i].desc,
2200                                              cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2201                                              be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2202                         } else {
2203                                 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2204                                         ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2205                                                      path_status_desc[j].desc, path_type_desc[i].desc,
2206                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2207                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2208                                 } else if (cfg->cascaded_expander == 0xff) {
2209                                         ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2210                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2211                                                      path_type_desc[i].desc, cfg->phy,
2212                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2213                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2214                                 } else if (cfg->phy == 0xff) {
2215                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2216                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2217                                                      path_type_desc[i].desc, cfg->cascaded_expander,
2218                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2219                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2220                                 } else {
2221                                         ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2222                                                      "WWN=%08X%08X\n", path_status_desc[j].desc,
2223                                                      path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2224                                                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2225                                                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2226                                 }
2227                         }
2228                         return;
2229                 }
2230         }
2231
2232         ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2233                      "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2234                      link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2235                      be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2236 }
2237
2238 /**
2239  * ipr_log64_path_elem - Log a fabric path element.
2240  * @hostrcb:    hostrcb struct
2241  * @cfg:                fabric path element struct
2242  *
2243  * Return value:
2244  *      none
2245  **/
2246 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2247                                 struct ipr_hostrcb64_config_element *cfg)
2248 {
2249         int i, j;
2250         u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2251         u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2252         u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2253         char buffer[IPR_MAX_RES_PATH_LENGTH];
2254
2255         if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2256                 return;
2257
2258         for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2259                 if (path_type_desc[i].type != type)
2260                         continue;
2261
2262                 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2263                         if (path_status_desc[j].status != status)
2264                                 continue;
2265
2266                         ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2267                                      path_status_desc[j].desc, path_type_desc[i].desc,
2268                                      ipr_format_res_path(hostrcb->ioa_cfg,
2269                                         cfg->res_path, buffer, sizeof(buffer)),
2270                                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2271                                         be32_to_cpu(cfg->wwid[0]),
2272                                         be32_to_cpu(cfg->wwid[1]));
2273                         return;
2274                 }
2275         }
2276         ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2277                      "WWN=%08X%08X\n", cfg->type_status,
2278                      ipr_format_res_path(hostrcb->ioa_cfg,
2279                         cfg->res_path, buffer, sizeof(buffer)),
2280                         link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2281                         be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2282 }
2283
2284 /**
2285  * ipr_log_fabric_error - Log a fabric error.
2286  * @ioa_cfg:    ioa config struct
2287  * @hostrcb:    hostrcb struct
2288  *
2289  * Return value:
2290  *      none
2291  **/
2292 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2293                                  struct ipr_hostrcb *hostrcb)
2294 {
2295         struct ipr_hostrcb_type_20_error *error;
2296         struct ipr_hostrcb_fabric_desc *fabric;
2297         struct ipr_hostrcb_config_element *cfg;
2298         int i, add_len;
2299
2300         error = &hostrcb->hcam.u.error.u.type_20_error;
2301         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2302         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2303
2304         add_len = be32_to_cpu(hostrcb->hcam.length) -
2305                 (offsetof(struct ipr_hostrcb_error, u) +
2306                  offsetof(struct ipr_hostrcb_type_20_error, desc));
2307
2308         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2309                 ipr_log_fabric_path(hostrcb, fabric);
2310                 for_each_fabric_cfg(fabric, cfg)
2311                         ipr_log_path_elem(hostrcb, cfg);
2312
2313                 add_len -= be16_to_cpu(fabric->length);
2314                 fabric = (struct ipr_hostrcb_fabric_desc *)
2315                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2316         }
2317
2318         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2319 }
2320
2321 /**
2322  * ipr_log_sis64_array_error - Log a sis64 array error.
2323  * @ioa_cfg:    ioa config struct
2324  * @hostrcb:    hostrcb struct
2325  *
2326  * Return value:
2327  *      none
2328  **/
2329 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2330                                       struct ipr_hostrcb *hostrcb)
2331 {
2332         int i, num_entries;
2333         struct ipr_hostrcb_type_24_error *error;
2334         struct ipr_hostrcb64_array_data_entry *array_entry;
2335         char buffer[IPR_MAX_RES_PATH_LENGTH];
2336         const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2337
2338         error = &hostrcb->hcam.u.error64.u.type_24_error;
2339
2340         ipr_err_separator;
2341
2342         ipr_err("RAID %s Array Configuration: %s\n",
2343                 error->protection_level,
2344                 ipr_format_res_path(ioa_cfg, error->last_res_path,
2345                         buffer, sizeof(buffer)));
2346
2347         ipr_err_separator;
2348
2349         array_entry = error->array_member;
2350         num_entries = min_t(u32, error->num_entries,
2351                             ARRAY_SIZE(error->array_member));
2352
2353         for (i = 0; i < num_entries; i++, array_entry++) {
2354
2355                 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2356                         continue;
2357
2358                 if (error->exposed_mode_adn == i)
2359                         ipr_err("Exposed Array Member %d:\n", i);
2360                 else
2361                         ipr_err("Array Member %d:\n", i);
2362
2363                 ipr_err("Array Member %d:\n", i);
2364                 ipr_log_ext_vpd(&array_entry->vpd);
2365                 ipr_err("Current Location: %s\n",
2366                          ipr_format_res_path(ioa_cfg, array_entry->res_path,
2367                                 buffer, sizeof(buffer)));
2368                 ipr_err("Expected Location: %s\n",
2369                          ipr_format_res_path(ioa_cfg,
2370                                 array_entry->expected_res_path,
2371                                 buffer, sizeof(buffer)));
2372
2373                 ipr_err_separator;
2374         }
2375 }
2376
2377 /**
2378  * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2379  * @ioa_cfg:    ioa config struct
2380  * @hostrcb:    hostrcb struct
2381  *
2382  * Return value:
2383  *      none
2384  **/
2385 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2386                                        struct ipr_hostrcb *hostrcb)
2387 {
2388         struct ipr_hostrcb_type_30_error *error;
2389         struct ipr_hostrcb64_fabric_desc *fabric;
2390         struct ipr_hostrcb64_config_element *cfg;
2391         int i, add_len;
2392
2393         error = &hostrcb->hcam.u.error64.u.type_30_error;
2394
2395         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2396         ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2397
2398         add_len = be32_to_cpu(hostrcb->hcam.length) -
2399                 (offsetof(struct ipr_hostrcb64_error, u) +
2400                  offsetof(struct ipr_hostrcb_type_30_error, desc));
2401
2402         for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2403                 ipr_log64_fabric_path(hostrcb, fabric);
2404                 for_each_fabric_cfg(fabric, cfg)
2405                         ipr_log64_path_elem(hostrcb, cfg);
2406
2407                 add_len -= be16_to_cpu(fabric->length);
2408                 fabric = (struct ipr_hostrcb64_fabric_desc *)
2409                         ((unsigned long)fabric + be16_to_cpu(fabric->length));
2410         }
2411
2412         ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2413 }
2414
2415 /**
2416  * ipr_log_sis64_service_required_error - Log a sis64 service required error.
2417  * @ioa_cfg:    ioa config struct
2418  * @hostrcb:    hostrcb struct
2419  *
2420  * Return value:
2421  *      none
2422  **/
2423 static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg,
2424                                        struct ipr_hostrcb *hostrcb)
2425 {
2426         struct ipr_hostrcb_type_41_error *error;
2427
2428         error = &hostrcb->hcam.u.error64.u.type_41_error;
2429
2430         error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2431         ipr_err("Primary Failure Reason: %s\n", error->failure_reason);
2432         ipr_log_hex_data(ioa_cfg, error->data,
2433                          be32_to_cpu(hostrcb->hcam.length) -
2434                          (offsetof(struct ipr_hostrcb_error, u) +
2435                           offsetof(struct ipr_hostrcb_type_41_error, data)));
2436 }
2437 /**
2438  * ipr_log_generic_error - Log an adapter error.
2439  * @ioa_cfg:    ioa config struct
2440  * @hostrcb:    hostrcb struct
2441  *
2442  * Return value:
2443  *      none
2444  **/
2445 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2446                                   struct ipr_hostrcb *hostrcb)
2447 {
2448         ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2449                          be32_to_cpu(hostrcb->hcam.length));
2450 }
2451
2452 /**
2453  * ipr_log_sis64_device_error - Log a cache error.
2454  * @ioa_cfg:    ioa config struct
2455  * @hostrcb:    hostrcb struct
2456  *
2457  * Return value:
2458  *      none
2459  **/
2460 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2461                                          struct ipr_hostrcb *hostrcb)
2462 {
2463         struct ipr_hostrcb_type_21_error *error;
2464         char buffer[IPR_MAX_RES_PATH_LENGTH];
2465
2466         error = &hostrcb->hcam.u.error64.u.type_21_error;
2467
2468         ipr_err("-----Failing Device Information-----\n");
2469         ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2470                 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2471                  be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2472         ipr_err("Device Resource Path: %s\n",
2473                 __ipr_format_res_path(error->res_path,
2474                                       buffer, sizeof(buffer)));
2475         error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2476         error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2477         ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2478         ipr_err("Secondary Problem Description:  %s\n", error->second_problem_desc);
2479         ipr_err("SCSI Sense Data:\n");
2480         ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2481         ipr_err("SCSI Command Descriptor Block: \n");
2482         ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2483
2484         ipr_err("Additional IOA Data:\n");
2485         ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2486 }
2487
2488 /**
2489  * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2490  * @ioasc:      IOASC
2491  *
2492  * This function will return the index of into the ipr_error_table
2493  * for the specified IOASC. If the IOASC is not in the table,
2494  * 0 will be returned, which points to the entry used for unknown errors.
2495  *
2496  * Return value:
2497  *      index into the ipr_error_table
2498  **/
2499 static u32 ipr_get_error(u32 ioasc)
2500 {
2501         int i;
2502
2503         for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2504                 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2505                         return i;
2506
2507         return 0;
2508 }
2509
2510 /**
2511  * ipr_handle_log_data - Log an adapter error.
2512  * @ioa_cfg:    ioa config struct
2513  * @hostrcb:    hostrcb struct
2514  *
2515  * This function logs an adapter error to the system.
2516  *
2517  * Return value:
2518  *      none
2519  **/
2520 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2521                                 struct ipr_hostrcb *hostrcb)
2522 {
2523         u32 ioasc;
2524         int error_index;
2525         struct ipr_hostrcb_type_21_error *error;
2526
2527         if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2528                 return;
2529
2530         if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2531                 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2532
2533         if (ioa_cfg->sis64)
2534                 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2535         else
2536                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2537
2538         if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2539             ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2540                 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2541                 scsi_report_bus_reset(ioa_cfg->host,
2542                                       hostrcb->hcam.u.error.fd_res_addr.bus);
2543         }
2544
2545         error_index = ipr_get_error(ioasc);
2546
2547         if (!ipr_error_table[error_index].log_hcam)
2548                 return;
2549
2550         if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2551             hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2552                 error = &hostrcb->hcam.u.error64.u.type_21_error;
2553
2554                 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2555                         ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2556                                 return;
2557         }
2558
2559         ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2560
2561         /* Set indication we have logged an error */
2562         ioa_cfg->errors_logged++;
2563
2564         if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2565                 return;
2566         if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2567                 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2568
2569         switch (hostrcb->hcam.overlay_id) {
2570         case IPR_HOST_RCB_OVERLAY_ID_2:
2571                 ipr_log_cache_error(ioa_cfg, hostrcb);
2572                 break;
2573         case IPR_HOST_RCB_OVERLAY_ID_3:
2574                 ipr_log_config_error(ioa_cfg, hostrcb);
2575                 break;
2576         case IPR_HOST_RCB_OVERLAY_ID_4:
2577         case IPR_HOST_RCB_OVERLAY_ID_6:
2578                 ipr_log_array_error(ioa_cfg, hostrcb);
2579                 break;
2580         case IPR_HOST_RCB_OVERLAY_ID_7:
2581                 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2582                 break;
2583         case IPR_HOST_RCB_OVERLAY_ID_12:
2584                 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2585                 break;
2586         case IPR_HOST_RCB_OVERLAY_ID_13:
2587                 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2588                 break;
2589         case IPR_HOST_RCB_OVERLAY_ID_14:
2590         case IPR_HOST_RCB_OVERLAY_ID_16:
2591                 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2592                 break;
2593         case IPR_HOST_RCB_OVERLAY_ID_17:
2594                 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2595                 break;
2596         case IPR_HOST_RCB_OVERLAY_ID_20:
2597                 ipr_log_fabric_error(ioa_cfg, hostrcb);
2598                 break;
2599         case IPR_HOST_RCB_OVERLAY_ID_21:
2600                 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2601                 break;
2602         case IPR_HOST_RCB_OVERLAY_ID_23:
2603                 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2604                 break;
2605         case IPR_HOST_RCB_OVERLAY_ID_24:
2606         case IPR_HOST_RCB_OVERLAY_ID_26:
2607                 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2608                 break;
2609         case IPR_HOST_RCB_OVERLAY_ID_30:
2610                 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2611                 break;
2612         case IPR_HOST_RCB_OVERLAY_ID_41:
2613                 ipr_log_sis64_service_required_error(ioa_cfg, hostrcb);
2614                 break;
2615         case IPR_HOST_RCB_OVERLAY_ID_1:
2616         case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2617         default:
2618                 ipr_log_generic_error(ioa_cfg, hostrcb);
2619                 break;
2620         }
2621 }
2622
2623 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2624 {
2625         struct ipr_hostrcb *hostrcb;
2626
2627         hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2628                                         struct ipr_hostrcb, queue);
2629
2630         if (unlikely(!hostrcb)) {
2631                 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2632                 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2633                                                 struct ipr_hostrcb, queue);
2634         }
2635
2636         list_del_init(&hostrcb->queue);
2637         return hostrcb;
2638 }
2639
2640 /**
2641  * ipr_process_error - Op done function for an adapter error log.
2642  * @ipr_cmd:    ipr command struct
2643  *
2644  * This function is the op done function for an error log host
2645  * controlled async from the adapter. It will log the error and
2646  * send the HCAM back to the adapter.
2647  *
2648  * Return value:
2649  *      none
2650  **/
2651 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2652 {
2653         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2654         struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2655         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2656         u32 fd_ioasc;
2657
2658         if (ioa_cfg->sis64)
2659                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2660         else
2661                 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2662
2663         list_del_init(&hostrcb->queue);
2664         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2665
2666         if (!ioasc) {
2667                 ipr_handle_log_data(ioa_cfg, hostrcb);
2668                 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2669                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2670         } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2671                    ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2672                 dev_err(&ioa_cfg->pdev->dev,
2673                         "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2674         }
2675
2676         list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2677         schedule_work(&ioa_cfg->work_q);
2678         hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2679
2680         ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2681 }
2682
2683 /**
2684  * ipr_timeout -  An internally generated op has timed out.
2685  * @ipr_cmd:    ipr command struct
2686  *
2687  * This function blocks host requests and initiates an
2688  * adapter reset.
2689  *
2690  * Return value:
2691  *      none
2692  **/
2693 static void ipr_timeout(struct timer_list *t)
2694 {
2695         struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2696         unsigned long lock_flags = 0;
2697         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2698
2699         ENTER;
2700         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2701
2702         ioa_cfg->errors_logged++;
2703         dev_err(&ioa_cfg->pdev->dev,
2704                 "Adapter being reset due to command timeout.\n");
2705
2706         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2707                 ioa_cfg->sdt_state = GET_DUMP;
2708
2709         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2710                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2711
2712         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713         LEAVE;
2714 }
2715
2716 /**
2717  * ipr_oper_timeout -  Adapter timed out transitioning to operational
2718  * @ipr_cmd:    ipr command struct
2719  *
2720  * This function blocks host requests and initiates an
2721  * adapter reset.
2722  *
2723  * Return value:
2724  *      none
2725  **/
2726 static void ipr_oper_timeout(struct timer_list *t)
2727 {
2728         struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2729         unsigned long lock_flags = 0;
2730         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2731
2732         ENTER;
2733         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2734
2735         ioa_cfg->errors_logged++;
2736         dev_err(&ioa_cfg->pdev->dev,
2737                 "Adapter timed out transitioning to operational.\n");
2738
2739         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2740                 ioa_cfg->sdt_state = GET_DUMP;
2741
2742         if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2743                 if (ipr_fastfail)
2744                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2745                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2746         }
2747
2748         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2749         LEAVE;
2750 }
2751
2752 /**
2753  * ipr_find_ses_entry - Find matching SES in SES table
2754  * @res:        resource entry struct of SES
2755  *
2756  * Return value:
2757  *      pointer to SES table entry / NULL on failure
2758  **/
2759 static const struct ipr_ses_table_entry *
2760 ipr_find_ses_entry(struct ipr_resource_entry *res)
2761 {
2762         int i, j, matches;
2763         struct ipr_std_inq_vpids *vpids;
2764         const struct ipr_ses_table_entry *ste = ipr_ses_table;
2765
2766         for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2767                 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2768                         if (ste->compare_product_id_byte[j] == 'X') {
2769                                 vpids = &res->std_inq_data.vpids;
2770                                 if (vpids->product_id[j] == ste->product_id[j])
2771                                         matches++;
2772                                 else
2773                                         break;
2774                         } else
2775                                 matches++;
2776                 }
2777
2778                 if (matches == IPR_PROD_ID_LEN)
2779                         return ste;
2780         }
2781
2782         return NULL;
2783 }
2784
2785 /**
2786  * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2787  * @ioa_cfg:    ioa config struct
2788  * @bus:                SCSI bus
2789  * @bus_width:  bus width
2790  *
2791  * Return value:
2792  *      SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2793  *      For a 2-byte wide SCSI bus, the maximum transfer speed is
2794  *      twice the maximum transfer rate (e.g. for a wide enabled bus,
2795  *      max 160MHz = max 320MB/sec).
2796  **/
2797 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2798 {
2799         struct ipr_resource_entry *res;
2800         const struct ipr_ses_table_entry *ste;
2801         u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2802
2803         /* Loop through each config table entry in the config table buffer */
2804         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2805                 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2806                         continue;
2807
2808                 if (bus != res->bus)
2809                         continue;
2810
2811                 if (!(ste = ipr_find_ses_entry(res)))
2812                         continue;
2813
2814                 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2815         }
2816
2817         return max_xfer_rate;
2818 }
2819
2820 /**
2821  * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2822  * @ioa_cfg:            ioa config struct
2823  * @max_delay:          max delay in micro-seconds to wait
2824  *
2825  * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2826  *
2827  * Return value:
2828  *      0 on success / other on failure
2829  **/
2830 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2831 {
2832         volatile u32 pcii_reg;
2833         int delay = 1;
2834
2835         /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2836         while (delay < max_delay) {
2837                 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2838
2839                 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2840                         return 0;
2841
2842                 /* udelay cannot be used if delay is more than a few milliseconds */
2843                 if ((delay / 1000) > MAX_UDELAY_MS)
2844                         mdelay(delay / 1000);
2845                 else
2846                         udelay(delay);
2847
2848                 delay += delay;
2849         }
2850         return -EIO;
2851 }
2852
2853 /**
2854  * ipr_get_sis64_dump_data_section - Dump IOA memory
2855  * @ioa_cfg:                    ioa config struct
2856  * @start_addr:                 adapter address to dump
2857  * @dest:                       destination kernel buffer
2858  * @length_in_words:            length to dump in 4 byte words
2859  *
2860  * Return value:
2861  *      0 on success
2862  **/
2863 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2864                                            u32 start_addr,
2865                                            __be32 *dest, u32 length_in_words)
2866 {
2867         int i;
2868
2869         for (i = 0; i < length_in_words; i++) {
2870                 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2871                 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2872                 dest++;
2873         }
2874
2875         return 0;
2876 }
2877
2878 /**
2879  * ipr_get_ldump_data_section - Dump IOA memory
2880  * @ioa_cfg:                    ioa config struct
2881  * @start_addr:                 adapter address to dump
2882  * @dest:                               destination kernel buffer
2883  * @length_in_words:    length to dump in 4 byte words
2884  *
2885  * Return value:
2886  *      0 on success / -EIO on failure
2887  **/
2888 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2889                                       u32 start_addr,
2890                                       __be32 *dest, u32 length_in_words)
2891 {
2892         volatile u32 temp_pcii_reg;
2893         int i, delay = 0;
2894
2895         if (ioa_cfg->sis64)
2896                 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2897                                                        dest, length_in_words);
2898
2899         /* Write IOA interrupt reg starting LDUMP state  */
2900         writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2901                ioa_cfg->regs.set_uproc_interrupt_reg32);
2902
2903         /* Wait for IO debug acknowledge */
2904         if (ipr_wait_iodbg_ack(ioa_cfg,
2905                                IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2906                 dev_err(&ioa_cfg->pdev->dev,
2907                         "IOA dump long data transfer timeout\n");
2908                 return -EIO;
2909         }
2910
2911         /* Signal LDUMP interlocked - clear IO debug ack */
2912         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2913                ioa_cfg->regs.clr_interrupt_reg);
2914
2915         /* Write Mailbox with starting address */
2916         writel(start_addr, ioa_cfg->ioa_mailbox);
2917
2918         /* Signal address valid - clear IOA Reset alert */
2919         writel(IPR_UPROCI_RESET_ALERT,
2920                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2921
2922         for (i = 0; i < length_in_words; i++) {
2923                 /* Wait for IO debug acknowledge */
2924                 if (ipr_wait_iodbg_ack(ioa_cfg,
2925                                        IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2926                         dev_err(&ioa_cfg->pdev->dev,
2927                                 "IOA dump short data transfer timeout\n");
2928                         return -EIO;
2929                 }
2930
2931                 /* Read data from mailbox and increment destination pointer */
2932                 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2933                 dest++;
2934
2935                 /* For all but the last word of data, signal data received */
2936                 if (i < (length_in_words - 1)) {
2937                         /* Signal dump data received - Clear IO debug Ack */
2938                         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2939                                ioa_cfg->regs.clr_interrupt_reg);
2940                 }
2941         }
2942
2943         /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2944         writel(IPR_UPROCI_RESET_ALERT,
2945                ioa_cfg->regs.set_uproc_interrupt_reg32);
2946
2947         writel(IPR_UPROCI_IO_DEBUG_ALERT,
2948                ioa_cfg->regs.clr_uproc_interrupt_reg32);
2949
2950         /* Signal dump data received - Clear IO debug Ack */
2951         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2952                ioa_cfg->regs.clr_interrupt_reg);
2953
2954         /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2955         while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2956                 temp_pcii_reg =
2957                     readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2958
2959                 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2960                         return 0;
2961
2962                 udelay(10);
2963                 delay += 10;
2964         }
2965
2966         return 0;
2967 }
2968
2969 #ifdef CONFIG_SCSI_IPR_DUMP
2970 /**
2971  * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2972  * @ioa_cfg:            ioa config struct
2973  * @pci_address:        adapter address
2974  * @length:                     length of data to copy
2975  *
2976  * Copy data from PCI adapter to kernel buffer.
2977  * Note: length MUST be a 4 byte multiple
2978  * Return value:
2979  *      0 on success / other on failure
2980  **/
2981 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2982                         unsigned long pci_address, u32 length)
2983 {
2984         int bytes_copied = 0;
2985         int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2986         __be32 *page;
2987         unsigned long lock_flags = 0;
2988         struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2989
2990         if (ioa_cfg->sis64)
2991                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2992         else
2993                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2994
2995         while (bytes_copied < length &&
2996                (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2997                 if (ioa_dump->page_offset >= PAGE_SIZE ||
2998                     ioa_dump->page_offset == 0) {
2999                         page = (__be32 *)__get_free_page(GFP_ATOMIC);
3000
3001                         if (!page) {
3002                                 ipr_trace;
3003                                 return bytes_copied;
3004                         }
3005
3006                         ioa_dump->page_offset = 0;
3007                         ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
3008                         ioa_dump->next_page_index++;
3009                 } else
3010                         page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
3011
3012                 rem_len = length - bytes_copied;
3013                 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
3014                 cur_len = min(rem_len, rem_page_len);
3015
3016                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3017                 if (ioa_cfg->sdt_state == ABORT_DUMP) {
3018                         rc = -EIO;
3019                 } else {
3020                         rc = ipr_get_ldump_data_section(ioa_cfg,
3021                                                         pci_address + bytes_copied,
3022                                                         &page[ioa_dump->page_offset / 4],
3023                                                         (cur_len / sizeof(u32)));
3024                 }
3025                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3026
3027                 if (!rc) {
3028                         ioa_dump->page_offset += cur_len;
3029                         bytes_copied += cur_len;
3030                 } else {
3031                         ipr_trace;
3032                         break;
3033                 }
3034                 schedule();
3035         }
3036
3037         return bytes_copied;
3038 }
3039
3040 /**
3041  * ipr_init_dump_entry_hdr - Initialize a dump entry header.
3042  * @hdr:        dump entry header struct
3043  *
3044  * Return value:
3045  *      nothing
3046  **/
3047 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
3048 {
3049         hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
3050         hdr->num_elems = 1;
3051         hdr->offset = sizeof(*hdr);
3052         hdr->status = IPR_DUMP_STATUS_SUCCESS;
3053 }
3054
3055 /**
3056  * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
3057  * @ioa_cfg:    ioa config struct
3058  * @driver_dump:        driver dump struct
3059  *
3060  * Return value:
3061  *      nothing
3062  **/
3063 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
3064                                    struct ipr_driver_dump *driver_dump)
3065 {
3066         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3067
3068         ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
3069         driver_dump->ioa_type_entry.hdr.len =
3070                 sizeof(struct ipr_dump_ioa_type_entry) -
3071                 sizeof(struct ipr_dump_entry_header);
3072         driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3073         driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3074         driver_dump->ioa_type_entry.type = ioa_cfg->type;
3075         driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3076                 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3077                 ucode_vpd->minor_release[1];
3078         driver_dump->hdr.num_entries++;
3079 }
3080
3081 /**
3082  * ipr_dump_version_data - Fill in the driver version in the dump.
3083  * @ioa_cfg:    ioa config struct
3084  * @driver_dump:        driver dump struct
3085  *
3086  * Return value:
3087  *      nothing
3088  **/
3089 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3090                                   struct ipr_driver_dump *driver_dump)
3091 {
3092         ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3093         driver_dump->version_entry.hdr.len =
3094                 sizeof(struct ipr_dump_version_entry) -
3095                 sizeof(struct ipr_dump_entry_header);
3096         driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3097         driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3098         strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3099         driver_dump->hdr.num_entries++;
3100 }
3101
3102 /**
3103  * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3104  * @ioa_cfg:    ioa config struct
3105  * @driver_dump:        driver dump struct
3106  *
3107  * Return value:
3108  *      nothing
3109  **/
3110 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3111                                    struct ipr_driver_dump *driver_dump)
3112 {
3113         ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3114         driver_dump->trace_entry.hdr.len =
3115                 sizeof(struct ipr_dump_trace_entry) -
3116                 sizeof(struct ipr_dump_entry_header);
3117         driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3118         driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3119         memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3120         driver_dump->hdr.num_entries++;
3121 }
3122
3123 /**
3124  * ipr_dump_location_data - Fill in the IOA location in the dump.
3125  * @ioa_cfg:    ioa config struct
3126  * @driver_dump:        driver dump struct
3127  *
3128  * Return value:
3129  *      nothing
3130  **/
3131 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3132                                    struct ipr_driver_dump *driver_dump)
3133 {
3134         ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3135         driver_dump->location_entry.hdr.len =
3136                 sizeof(struct ipr_dump_location_entry) -
3137                 sizeof(struct ipr_dump_entry_header);
3138         driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3139         driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3140         strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3141         driver_dump->hdr.num_entries++;
3142 }
3143
3144 /**
3145  * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3146  * @ioa_cfg:    ioa config struct
3147  * @dump:               dump struct
3148  *
3149  * Return value:
3150  *      nothing
3151  **/
3152 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3153 {
3154         unsigned long start_addr, sdt_word;
3155         unsigned long lock_flags = 0;
3156         struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3157         struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3158         u32 num_entries, max_num_entries, start_off, end_off;
3159         u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3160         struct ipr_sdt *sdt;
3161         int valid = 1;
3162         int i;
3163
3164         ENTER;
3165
3166         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3167
3168         if (ioa_cfg->sdt_state != READ_DUMP) {
3169                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3170                 return;
3171         }
3172
3173         if (ioa_cfg->sis64) {
3174                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3175                 ssleep(IPR_DUMP_DELAY_SECONDS);
3176                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3177         }
3178
3179         start_addr = readl(ioa_cfg->ioa_mailbox);
3180
3181         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3182                 dev_err(&ioa_cfg->pdev->dev,
3183                         "Invalid dump table format: %lx\n", start_addr);
3184                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3185                 return;
3186         }
3187
3188         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3189
3190         driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3191
3192         /* Initialize the overall dump header */
3193         driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3194         driver_dump->hdr.num_entries = 1;
3195         driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3196         driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3197         driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3198         driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3199
3200         ipr_dump_version_data(ioa_cfg, driver_dump);
3201         ipr_dump_location_data(ioa_cfg, driver_dump);
3202         ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3203         ipr_dump_trace_data(ioa_cfg, driver_dump);
3204
3205         /* Update dump_header */
3206         driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3207
3208         /* IOA Dump entry */
3209         ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3210         ioa_dump->hdr.len = 0;
3211         ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3212         ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3213
3214         /* First entries in sdt are actually a list of dump addresses and
3215          lengths to gather the real dump data.  sdt represents the pointer
3216          to the ioa generated dump table.  Dump data will be extracted based
3217          on entries in this table */
3218         sdt = &ioa_dump->sdt;
3219
3220         if (ioa_cfg->sis64) {
3221                 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3222                 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3223         } else {
3224                 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3225                 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3226         }
3227
3228         bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3229                         (max_num_entries * sizeof(struct ipr_sdt_entry));
3230         rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3231                                         bytes_to_copy / sizeof(__be32));
3232
3233         /* Smart Dump table is ready to use and the first entry is valid */
3234         if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3235             (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3236                 dev_err(&ioa_cfg->pdev->dev,
3237                         "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3238                         rc, be32_to_cpu(sdt->hdr.state));
3239                 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3240                 ioa_cfg->sdt_state = DUMP_OBTAINED;
3241                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3242                 return;
3243         }
3244
3245         num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3246
3247         if (num_entries > max_num_entries)
3248                 num_entries = max_num_entries;
3249
3250         /* Update dump length to the actual data to be copied */
3251         dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3252         if (ioa_cfg->sis64)
3253                 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3254         else
3255                 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3256
3257         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3258
3259         for (i = 0; i < num_entries; i++) {
3260                 if (ioa_dump->hdr.len > max_dump_size) {
3261                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3262                         break;
3263                 }
3264
3265                 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3266                         sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3267                         if (ioa_cfg->sis64)
3268                                 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3269                         else {
3270                                 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3271                                 end_off = be32_to_cpu(sdt->entry[i].end_token);
3272
3273                                 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3274                                         bytes_to_copy = end_off - start_off;
3275                                 else
3276                                         valid = 0;
3277                         }
3278                         if (valid) {
3279                                 if (bytes_to_copy > max_dump_size) {
3280                                         sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3281                                         continue;
3282                                 }
3283
3284                                 /* Copy data from adapter to driver buffers */
3285                                 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3286                                                             bytes_to_copy);
3287
3288                                 ioa_dump->hdr.len += bytes_copied;
3289
3290                                 if (bytes_copied != bytes_to_copy) {
3291                                         driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3292                                         break;
3293                                 }
3294                         }
3295                 }
3296         }
3297
3298         dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3299
3300         /* Update dump_header */
3301         driver_dump->hdr.len += ioa_dump->hdr.len;
3302         wmb();
3303         ioa_cfg->sdt_state = DUMP_OBTAINED;
3304         LEAVE;
3305 }
3306
3307 #else
3308 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3309 #endif
3310
3311 /**
3312  * ipr_release_dump - Free adapter dump memory
3313  * @kref:       kref struct
3314  *
3315  * Return value:
3316  *      nothing
3317  **/
3318 static void ipr_release_dump(struct kref *kref)
3319 {
3320         struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3321         struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3322         unsigned long lock_flags = 0;
3323         int i;
3324
3325         ENTER;
3326         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3327         ioa_cfg->dump = NULL;
3328         ioa_cfg->sdt_state = INACTIVE;
3329         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3330
3331         for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3332                 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3333
3334         vfree(dump->ioa_dump.ioa_data);
3335         kfree(dump);
3336         LEAVE;
3337 }
3338
3339 /**
3340  * ipr_worker_thread - Worker thread
3341  * @work:               ioa config struct
3342  *
3343  * Called at task level from a work thread. This function takes care
3344  * of adding and removing device from the mid-layer as configuration
3345  * changes are detected by the adapter.
3346  *
3347  * Return value:
3348  *      nothing
3349  **/
3350 static void ipr_worker_thread(struct work_struct *work)
3351 {
3352         unsigned long lock_flags;
3353         struct ipr_resource_entry *res;
3354         struct scsi_device *sdev;
3355         struct ipr_dump *dump;
3356         struct ipr_ioa_cfg *ioa_cfg =
3357                 container_of(work, struct ipr_ioa_cfg, work_q);
3358         u8 bus, target, lun;
3359         int did_work;
3360
3361         ENTER;
3362         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3363
3364         if (ioa_cfg->sdt_state == READ_DUMP) {
3365                 dump = ioa_cfg->dump;
3366                 if (!dump) {
3367                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3368                         return;
3369                 }
3370                 kref_get(&dump->kref);
3371                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3372                 ipr_get_ioa_dump(ioa_cfg, dump);
3373                 kref_put(&dump->kref, ipr_release_dump);
3374
3375                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3376                 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3377                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3378                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3379                 return;
3380         }
3381
3382         if (ioa_cfg->scsi_unblock) {
3383                 ioa_cfg->scsi_unblock = 0;
3384                 ioa_cfg->scsi_blocked = 0;
3385                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3386                 scsi_unblock_requests(ioa_cfg->host);
3387                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3388                 if (ioa_cfg->scsi_blocked)
3389                         scsi_block_requests(ioa_cfg->host);
3390         }
3391
3392         if (!ioa_cfg->scan_enabled) {
3393                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3394                 return;
3395         }
3396
3397 restart:
3398         do {
3399                 did_work = 0;
3400                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3401                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3402                         return;
3403                 }
3404
3405                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3406                         if (res->del_from_ml && res->sdev) {
3407                                 did_work = 1;
3408                                 sdev = res->sdev;
3409                                 if (!scsi_device_get(sdev)) {
3410                                         if (!res->add_to_ml)
3411                                                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3412                                         else
3413                                                 res->del_from_ml = 0;
3414                                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3415                                         scsi_remove_device(sdev);
3416                                         scsi_device_put(sdev);
3417                                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3418                                 }
3419                                 break;
3420                         }
3421                 }
3422         } while (did_work);
3423
3424         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3425                 if (res->add_to_ml) {
3426                         bus = res->bus;
3427                         target = res->target;
3428                         lun = res->lun;
3429                         res->add_to_ml = 0;
3430                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3431                         scsi_add_device(ioa_cfg->host, bus, target, lun);
3432                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3433                         goto restart;
3434                 }
3435         }
3436
3437         ioa_cfg->scan_done = 1;
3438         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3439         kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3440         LEAVE;
3441 }
3442
3443 #ifdef CONFIG_SCSI_IPR_TRACE
3444 /**
3445  * ipr_read_trace - Dump the adapter trace
3446  * @filp:               open sysfs file
3447  * @kobj:               kobject struct
3448  * @bin_attr:           bin_attribute struct
3449  * @buf:                buffer
3450  * @off:                offset
3451  * @count:              buffer size
3452  *
3453  * Return value:
3454  *      number of bytes printed to buffer
3455  **/
3456 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3457                               struct bin_attribute *bin_attr,
3458                               char *buf, loff_t off, size_t count)
3459 {
3460         struct device *dev = container_of(kobj, struct device, kobj);
3461         struct Scsi_Host *shost = class_to_shost(dev);
3462         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3463         unsigned long lock_flags = 0;
3464         ssize_t ret;
3465
3466         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3467         ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3468                                 IPR_TRACE_SIZE);
3469         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3470
3471         return ret;
3472 }
3473
3474 static struct bin_attribute ipr_trace_attr = {
3475         .attr = {
3476                 .name = "trace",
3477                 .mode = S_IRUGO,
3478         },
3479         .size = 0,
3480         .read = ipr_read_trace,
3481 };
3482 #endif
3483
3484 /**
3485  * ipr_show_fw_version - Show the firmware version
3486  * @dev:        class device struct
3487  * @buf:        buffer
3488  *
3489  * Return value:
3490  *      number of bytes printed to buffer
3491  **/
3492 static ssize_t ipr_show_fw_version(struct device *dev,
3493                                    struct device_attribute *attr, char *buf)
3494 {
3495         struct Scsi_Host *shost = class_to_shost(dev);
3496         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3497         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3498         unsigned long lock_flags = 0;
3499         int len;
3500
3501         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3502         len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3503                        ucode_vpd->major_release, ucode_vpd->card_type,
3504                        ucode_vpd->minor_release[0],
3505                        ucode_vpd->minor_release[1]);
3506         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3507         return len;
3508 }
3509
3510 static struct device_attribute ipr_fw_version_attr = {
3511         .attr = {
3512                 .name =         "fw_version",
3513                 .mode =         S_IRUGO,
3514         },
3515         .show = ipr_show_fw_version,
3516 };
3517
3518 /**
3519  * ipr_show_log_level - Show the adapter's error logging level
3520  * @dev:        class device struct
3521  * @buf:        buffer
3522  *
3523  * Return value:
3524  *      number of bytes printed to buffer
3525  **/
3526 static ssize_t ipr_show_log_level(struct device *dev,
3527                                    struct device_attribute *attr, char *buf)
3528 {
3529         struct Scsi_Host *shost = class_to_shost(dev);
3530         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3531         unsigned long lock_flags = 0;
3532         int len;
3533
3534         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3535         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3536         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3537         return len;
3538 }
3539
3540 /**
3541  * ipr_store_log_level - Change the adapter's error logging level
3542  * @dev:        class device struct
3543  * @buf:        buffer
3544  *
3545  * Return value:
3546  *      number of bytes printed to buffer
3547  **/
3548 static ssize_t ipr_store_log_level(struct device *dev,
3549                                    struct device_attribute *attr,
3550                                    const char *buf, size_t count)
3551 {
3552         struct Scsi_Host *shost = class_to_shost(dev);
3553         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3554         unsigned long lock_flags = 0;
3555
3556         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3557         ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3558         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3559         return strlen(buf);
3560 }
3561
3562 static struct device_attribute ipr_log_level_attr = {
3563         .attr = {
3564                 .name =         "log_level",
3565                 .mode =         S_IRUGO | S_IWUSR,
3566         },
3567         .show = ipr_show_log_level,
3568         .store = ipr_store_log_level
3569 };
3570
3571 /**
3572  * ipr_store_diagnostics - IOA Diagnostics interface
3573  * @dev:        device struct
3574  * @buf:        buffer
3575  * @count:      buffer size
3576  *
3577  * This function will reset the adapter and wait a reasonable
3578  * amount of time for any errors that the adapter might log.
3579  *
3580  * Return value:
3581  *      count on success / other on failure
3582  **/
3583 static ssize_t ipr_store_diagnostics(struct device *dev,
3584                                      struct device_attribute *attr,
3585                                      const char *buf, size_t count)
3586 {
3587         struct Scsi_Host *shost = class_to_shost(dev);
3588         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3589         unsigned long lock_flags = 0;
3590         int rc = count;
3591
3592         if (!capable(CAP_SYS_ADMIN))
3593                 return -EACCES;
3594
3595         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3596         while (ioa_cfg->in_reset_reload) {
3597                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3598                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3599                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3600         }
3601
3602         ioa_cfg->errors_logged = 0;
3603         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3604
3605         if (ioa_cfg->in_reset_reload) {
3606                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3607                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3608
3609                 /* Wait for a second for any errors to be logged */
3610                 msleep(1000);
3611         } else {
3612                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3613                 return -EIO;
3614         }
3615
3616         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3617         if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3618                 rc = -EIO;
3619         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3620
3621         return rc;
3622 }
3623
3624 static struct device_attribute ipr_diagnostics_attr = {
3625         .attr = {
3626                 .name =         "run_diagnostics",
3627                 .mode =         S_IWUSR,
3628         },
3629         .store = ipr_store_diagnostics
3630 };
3631
3632 /**
3633  * ipr_show_adapter_state - Show the adapter's state
3634  * @class_dev:  device struct
3635  * @buf:        buffer
3636  *
3637  * Return value:
3638  *      number of bytes printed to buffer
3639  **/
3640 static ssize_t ipr_show_adapter_state(struct device *dev,
3641                                       struct device_attribute *attr, char *buf)
3642 {
3643         struct Scsi_Host *shost = class_to_shost(dev);
3644         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3645         unsigned long lock_flags = 0;
3646         int len;
3647
3648         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3649         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3650                 len = snprintf(buf, PAGE_SIZE, "offline\n");
3651         else
3652                 len = snprintf(buf, PAGE_SIZE, "online\n");
3653         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3654         return len;
3655 }
3656
3657 /**
3658  * ipr_store_adapter_state - Change adapter state
3659  * @dev:        device struct
3660  * @buf:        buffer
3661  * @count:      buffer size
3662  *
3663  * This function will change the adapter's state.
3664  *
3665  * Return value:
3666  *      count on success / other on failure
3667  **/
3668 static ssize_t ipr_store_adapter_state(struct device *dev,
3669                                        struct device_attribute *attr,
3670                                        const char *buf, size_t count)
3671 {
3672         struct Scsi_Host *shost = class_to_shost(dev);
3673         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3674         unsigned long lock_flags;
3675         int result = count, i;
3676
3677         if (!capable(CAP_SYS_ADMIN))
3678                 return -EACCES;
3679
3680         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3681         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3682             !strncmp(buf, "online", 6)) {
3683                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3684                         spin_lock(&ioa_cfg->hrrq[i]._lock);
3685                         ioa_cfg->hrrq[i].ioa_is_dead = 0;
3686                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
3687                 }
3688                 wmb();
3689                 ioa_cfg->reset_retries = 0;
3690                 ioa_cfg->in_ioa_bringdown = 0;
3691                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3692         }
3693         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3694         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3695
3696         return result;
3697 }
3698
3699 static struct device_attribute ipr_ioa_state_attr = {
3700         .attr = {
3701                 .name =         "online_state",
3702                 .mode =         S_IRUGO | S_IWUSR,
3703         },
3704         .show = ipr_show_adapter_state,
3705         .store = ipr_store_adapter_state
3706 };
3707
3708 /**
3709  * ipr_store_reset_adapter - Reset the adapter
3710  * @dev:        device struct
3711  * @buf:        buffer
3712  * @count:      buffer size
3713  *
3714  * This function will reset the adapter.
3715  *
3716  * Return value:
3717  *      count on success / other on failure
3718  **/
3719 static ssize_t ipr_store_reset_adapter(struct device *dev,
3720                                        struct device_attribute *attr,
3721                                        const char *buf, size_t count)
3722 {
3723         struct Scsi_Host *shost = class_to_shost(dev);
3724         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3725         unsigned long lock_flags;
3726         int result = count;
3727
3728         if (!capable(CAP_SYS_ADMIN))
3729                 return -EACCES;
3730
3731         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3732         if (!ioa_cfg->in_reset_reload)
3733                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3734         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3735         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3736
3737         return result;
3738 }
3739
3740 static struct device_attribute ipr_ioa_reset_attr = {
3741         .attr = {
3742                 .name =         "reset_host",
3743                 .mode =         S_IWUSR,
3744         },
3745         .store = ipr_store_reset_adapter
3746 };
3747
3748 static int ipr_iopoll(struct irq_poll *iop, int budget);
3749  /**
3750  * ipr_show_iopoll_weight - Show ipr polling mode
3751  * @dev:        class device struct
3752  * @buf:        buffer
3753  *
3754  * Return value:
3755  *      number of bytes printed to buffer
3756  **/
3757 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3758                                    struct device_attribute *attr, char *buf)
3759 {
3760         struct Scsi_Host *shost = class_to_shost(dev);
3761         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3762         unsigned long lock_flags = 0;
3763         int len;
3764
3765         spin_lock_irqsave(shost->host_lock, lock_flags);
3766         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3767         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3768
3769         return len;
3770 }
3771
3772 /**
3773  * ipr_store_iopoll_weight - Change the adapter's polling mode
3774  * @dev:        class device struct
3775  * @buf:        buffer
3776  *
3777  * Return value:
3778  *      number of bytes printed to buffer
3779  **/
3780 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3781                                         struct device_attribute *attr,
3782                                         const char *buf, size_t count)
3783 {
3784         struct Scsi_Host *shost = class_to_shost(dev);
3785         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3786         unsigned long user_iopoll_weight;
3787         unsigned long lock_flags = 0;
3788         int i;
3789
3790         if (!ioa_cfg->sis64) {
3791                 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3792                 return -EINVAL;
3793         }
3794         if (kstrtoul(buf, 10, &user_iopoll_weight))
3795                 return -EINVAL;
3796
3797         if (user_iopoll_weight > 256) {
3798                 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3799                 return -EINVAL;
3800         }
3801
3802         if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3803                 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3804                 return strlen(buf);
3805         }
3806
3807         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3808                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3809                         irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3810         }
3811
3812         spin_lock_irqsave(shost->host_lock, lock_flags);
3813         ioa_cfg->iopoll_weight = user_iopoll_weight;
3814         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3815                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3816                         irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3817                                         ioa_cfg->iopoll_weight, ipr_iopoll);
3818                 }
3819         }
3820         spin_unlock_irqrestore(shost->host_lock, lock_flags);
3821
3822         return strlen(buf);
3823 }
3824
3825 static struct device_attribute ipr_iopoll_weight_attr = {
3826         .attr = {
3827                 .name =         "iopoll_weight",
3828                 .mode =         S_IRUGO | S_IWUSR,
3829         },
3830         .show = ipr_show_iopoll_weight,
3831         .store = ipr_store_iopoll_weight
3832 };
3833
3834 /**
3835  * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3836  * @buf_len:            buffer length
3837  *
3838  * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3839  * list to use for microcode download
3840  *
3841  * Return value:
3842  *      pointer to sglist / NULL on failure
3843  **/
3844 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3845 {
3846         int sg_size, order;
3847         struct ipr_sglist *sglist;
3848
3849         /* Get the minimum size per scatter/gather element */
3850         sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3851
3852         /* Get the actual size per element */
3853         order = get_order(sg_size);
3854
3855         /* Allocate a scatter/gather list for the DMA */
3856         sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL);
3857         if (sglist == NULL) {
3858                 ipr_trace;
3859                 return NULL;
3860         }
3861         sglist->order = order;
3862         sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
3863                                               &sglist->num_sg);
3864         if (!sglist->scatterlist) {
3865                 kfree(sglist);
3866                 return NULL;
3867         }
3868
3869         return sglist;
3870 }
3871
3872 /**
3873  * ipr_free_ucode_buffer - Frees a microcode download buffer
3874  * @p_dnld:             scatter/gather list pointer
3875  *
3876  * Free a DMA'able ucode download buffer previously allocated with
3877  * ipr_alloc_ucode_buffer
3878  *
3879  * Return value:
3880  *      nothing
3881  **/
3882 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3883 {
3884         sgl_free_order(sglist->scatterlist, sglist->order);
3885         kfree(sglist);
3886 }
3887
3888 /**
3889  * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3890  * @sglist:             scatter/gather list pointer
3891  * @buffer:             buffer pointer
3892  * @len:                buffer length
3893  *
3894  * Copy a microcode image from a user buffer into a buffer allocated by
3895  * ipr_alloc_ucode_buffer
3896  *
3897  * Return value:
3898  *      0 on success / other on failure
3899  **/
3900 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3901                                  u8 *buffer, u32 len)
3902 {
3903         int bsize_elem, i, result = 0;
3904         struct scatterlist *scatterlist;
3905         void *kaddr;
3906
3907         /* Determine the actual number of bytes per element */
3908         bsize_elem = PAGE_SIZE * (1 << sglist->order);
3909
3910         scatterlist = sglist->scatterlist;
3911
3912         for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3913                 struct page *page = sg_page(&scatterlist[i]);
3914
3915                 kaddr = kmap(page);
3916                 memcpy(kaddr, buffer, bsize_elem);
3917                 kunmap(page);
3918
3919                 scatterlist[i].length = bsize_elem;
3920
3921                 if (result != 0) {
3922                         ipr_trace;
3923                         return result;
3924                 }
3925         }
3926
3927         if (len % bsize_elem) {
3928                 struct page *page = sg_page(&scatterlist[i]);
3929
3930                 kaddr = kmap(page);
3931                 memcpy(kaddr, buffer, len % bsize_elem);
3932                 kunmap(page);
3933
3934                 scatterlist[i].length = len % bsize_elem;
3935         }
3936
3937         sglist->buffer_len = len;
3938         return result;
3939 }
3940
3941 /**
3942  * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3943  * @ipr_cmd:            ipr command struct
3944  * @sglist:             scatter/gather list
3945  *
3946  * Builds a microcode download IOA data list (IOADL).
3947  *
3948  **/
3949 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3950                                     struct ipr_sglist *sglist)
3951 {
3952         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3953         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3954         struct scatterlist *scatterlist = sglist->scatterlist;
3955         int i;
3956
3957         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3958         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3959         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3960
3961         ioarcb->ioadl_len =
3962                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3963         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3964                 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3965                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3966                 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3967         }
3968
3969         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3970 }
3971
3972 /**
3973  * ipr_build_ucode_ioadl - Build a microcode download IOADL
3974  * @ipr_cmd:    ipr command struct
3975  * @sglist:             scatter/gather list
3976  *
3977  * Builds a microcode download IOA data list (IOADL).
3978  *
3979  **/
3980 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3981                                   struct ipr_sglist *sglist)
3982 {
3983         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3984         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3985         struct scatterlist *scatterlist = sglist->scatterlist;
3986         int i;
3987
3988         ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3989         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3990         ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3991
3992         ioarcb->ioadl_len =
3993                 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3994
3995         for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3996                 ioadl[i].flags_and_data_len =
3997                         cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3998                 ioadl[i].address =
3999                         cpu_to_be32(sg_dma_address(&scatterlist[i]));
4000         }
4001
4002         ioadl[i-1].flags_and_data_len |=
4003                 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4004 }
4005
4006 /**
4007  * ipr_update_ioa_ucode - Update IOA's microcode
4008  * @ioa_cfg:    ioa config struct
4009  * @sglist:             scatter/gather list
4010  *
4011  * Initiate an adapter reset to update the IOA's microcode
4012  *
4013  * Return value:
4014  *      0 on success / -EIO on failure
4015  **/
4016 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
4017                                 struct ipr_sglist *sglist)
4018 {
4019         unsigned long lock_flags;
4020
4021         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4022         while (ioa_cfg->in_reset_reload) {
4023                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4024                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4025                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4026         }
4027
4028         if (ioa_cfg->ucode_sglist) {
4029                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4030                 dev_err(&ioa_cfg->pdev->dev,
4031                         "Microcode download already in progress\n");
4032                 return -EIO;
4033         }
4034
4035         sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
4036                                         sglist->scatterlist, sglist->num_sg,
4037                                         DMA_TO_DEVICE);
4038
4039         if (!sglist->num_dma_sg) {
4040                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4041                 dev_err(&ioa_cfg->pdev->dev,
4042                         "Failed to map microcode download buffer!\n");
4043                 return -EIO;
4044         }
4045
4046         ioa_cfg->ucode_sglist = sglist;
4047         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4048         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4049         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4050
4051         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4052         ioa_cfg->ucode_sglist = NULL;
4053         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4054         return 0;
4055 }
4056
4057 /**
4058  * ipr_store_update_fw - Update the firmware on the adapter
4059  * @class_dev:  device struct
4060  * @buf:        buffer
4061  * @count:      buffer size
4062  *
4063  * This function will update the firmware on the adapter.
4064  *
4065  * Return value:
4066  *      count on success / other on failure
4067  **/
4068 static ssize_t ipr_store_update_fw(struct device *dev,
4069                                    struct device_attribute *attr,
4070                                    const char *buf, size_t count)
4071 {
4072         struct Scsi_Host *shost = class_to_shost(dev);
4073         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4074         struct ipr_ucode_image_header *image_hdr;
4075         const struct firmware *fw_entry;
4076         struct ipr_sglist *sglist;
4077         char fname[100];
4078         char *src;
4079         char *endline;
4080         int result, dnld_size;
4081
4082         if (!capable(CAP_SYS_ADMIN))
4083                 return -EACCES;
4084
4085         snprintf(fname, sizeof(fname), "%s", buf);
4086
4087         endline = strchr(fname, '\n');
4088         if (endline)
4089                 *endline = '\0';
4090
4091         if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4092                 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4093                 return -EIO;
4094         }
4095
4096         image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4097
4098         src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4099         dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4100         sglist = ipr_alloc_ucode_buffer(dnld_size);
4101
4102         if (!sglist) {
4103                 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4104                 release_firmware(fw_entry);
4105                 return -ENOMEM;
4106         }
4107
4108         result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4109
4110         if (result) {
4111                 dev_err(&ioa_cfg->pdev->dev,
4112                         "Microcode buffer copy to DMA buffer failed\n");
4113                 goto out;
4114         }
4115
4116         ipr_info("Updating microcode, please be patient.  This may take up to 30 minutes.\n");
4117
4118         result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4119
4120         if (!result)
4121                 result = count;
4122 out:
4123         ipr_free_ucode_buffer(sglist);
4124         release_firmware(fw_entry);
4125         return result;
4126 }
4127
4128 static struct device_attribute ipr_update_fw_attr = {
4129         .attr = {
4130                 .name =         "update_fw",
4131                 .mode =         S_IWUSR,
4132         },
4133         .store = ipr_store_update_fw
4134 };
4135
4136 /**
4137  * ipr_show_fw_type - Show the adapter's firmware type.
4138  * @dev:        class device struct
4139  * @buf:        buffer
4140  *
4141  * Return value:
4142  *      number of bytes printed to buffer
4143  **/
4144 static ssize_t ipr_show_fw_type(struct device *dev,
4145                                 struct device_attribute *attr, char *buf)
4146 {
4147         struct Scsi_Host *shost = class_to_shost(dev);
4148         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4149         unsigned long lock_flags = 0;
4150         int len;
4151
4152         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4153         len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4154         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4155         return len;
4156 }
4157
4158 static struct device_attribute ipr_ioa_fw_type_attr = {
4159         .attr = {
4160                 .name =         "fw_type",
4161                 .mode =         S_IRUGO,
4162         },
4163         .show = ipr_show_fw_type
4164 };
4165
4166 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4167                                 struct bin_attribute *bin_attr, char *buf,
4168                                 loff_t off, size_t count)
4169 {
4170         struct device *cdev = container_of(kobj, struct device, kobj);
4171         struct Scsi_Host *shost = class_to_shost(cdev);
4172         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4173         struct ipr_hostrcb *hostrcb;
4174         unsigned long lock_flags = 0;
4175         int ret;
4176
4177         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4178         hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4179                                         struct ipr_hostrcb, queue);
4180         if (!hostrcb) {
4181                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4182                 return 0;
4183         }
4184         ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4185                                 sizeof(hostrcb->hcam));
4186         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4187         return ret;
4188 }
4189
4190 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4191                                 struct bin_attribute *bin_attr, char *buf,
4192                                 loff_t off, size_t count)
4193 {
4194         struct device *cdev = container_of(kobj, struct device, kobj);
4195         struct Scsi_Host *shost = class_to_shost(cdev);
4196         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4197         struct ipr_hostrcb *hostrcb;
4198         unsigned long lock_flags = 0;
4199
4200         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4201         hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4202                                         struct ipr_hostrcb, queue);
4203         if (!hostrcb) {
4204                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4205                 return count;
4206         }
4207
4208         /* Reclaim hostrcb before exit */
4209         list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4210         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4211         return count;
4212 }
4213
4214 static struct bin_attribute ipr_ioa_async_err_log = {
4215         .attr = {
4216                 .name =         "async_err_log",
4217                 .mode =         S_IRUGO | S_IWUSR,
4218         },
4219         .size = 0,
4220         .read = ipr_read_async_err_log,
4221         .write = ipr_next_async_err_log
4222 };
4223
4224 static struct device_attribute *ipr_ioa_attrs[] = {
4225         &ipr_fw_version_attr,
4226         &ipr_log_level_attr,
4227         &ipr_diagnostics_attr,
4228         &ipr_ioa_state_attr,
4229         &ipr_ioa_reset_attr,
4230         &ipr_update_fw_attr,
4231         &ipr_ioa_fw_type_attr,
4232         &ipr_iopoll_weight_attr,
4233         NULL,
4234 };
4235
4236 #ifdef CONFIG_SCSI_IPR_DUMP
4237 /**
4238  * ipr_read_dump - Dump the adapter
4239  * @filp:               open sysfs file
4240  * @kobj:               kobject struct
4241  * @bin_attr:           bin_attribute struct
4242  * @buf:                buffer
4243  * @off:                offset
4244  * @count:              buffer size
4245  *
4246  * Return value:
4247  *      number of bytes printed to buffer
4248  **/
4249 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4250                              struct bin_attribute *bin_attr,
4251                              char *buf, loff_t off, size_t count)
4252 {
4253         struct device *cdev = container_of(kobj, struct device, kobj);
4254         struct Scsi_Host *shost = class_to_shost(cdev);
4255         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4256         struct ipr_dump *dump;
4257         unsigned long lock_flags = 0;
4258         char *src;
4259         int len, sdt_end;
4260         size_t rc = count;
4261
4262         if (!capable(CAP_SYS_ADMIN))
4263                 return -EACCES;
4264
4265         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4266         dump = ioa_cfg->dump;
4267
4268         if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4269                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4270                 return 0;
4271         }
4272         kref_get(&dump->kref);
4273         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4274
4275         if (off > dump->driver_dump.hdr.len) {
4276                 kref_put(&dump->kref, ipr_release_dump);
4277                 return 0;
4278         }
4279
4280         if (off + count > dump->driver_dump.hdr.len) {
4281                 count = dump->driver_dump.hdr.len - off;
4282                 rc = count;
4283         }
4284
4285         if (count && off < sizeof(dump->driver_dump)) {
4286                 if (off + count > sizeof(dump->driver_dump))
4287                         len = sizeof(dump->driver_dump) - off;
4288                 else
4289                         len = count;
4290                 src = (u8 *)&dump->driver_dump + off;
4291                 memcpy(buf, src, len);
4292                 buf += len;
4293                 off += len;
4294                 count -= len;
4295         }
4296
4297         off -= sizeof(dump->driver_dump);
4298
4299         if (ioa_cfg->sis64)
4300                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4301                           (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4302                            sizeof(struct ipr_sdt_entry));
4303         else
4304                 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4305                           (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4306
4307         if (count && off < sdt_end) {
4308                 if (off + count > sdt_end)
4309                         len = sdt_end - off;
4310                 else
4311                         len = count;
4312                 src = (u8 *)&dump->ioa_dump + off;
4313                 memcpy(buf, src, len);
4314                 buf += len;
4315                 off += len;
4316                 count -= len;
4317         }
4318
4319         off -= sdt_end;
4320
4321         while (count) {
4322                 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4323                         len = PAGE_ALIGN(off) - off;
4324                 else
4325                         len = count;
4326                 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4327                 src += off & ~PAGE_MASK;
4328                 memcpy(buf, src, len);
4329                 buf += len;
4330                 off += len;
4331                 count -= len;
4332         }
4333
4334         kref_put(&dump->kref, ipr_release_dump);
4335         return rc;
4336 }
4337
4338 /**
4339  * ipr_alloc_dump - Prepare for adapter dump
4340  * @ioa_cfg:    ioa config struct
4341  *
4342  * Return value:
4343  *      0 on success / other on failure
4344  **/
4345 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4346 {
4347         struct ipr_dump *dump;
4348         __be32 **ioa_data;
4349         unsigned long lock_flags = 0;
4350
4351         dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4352
4353         if (!dump) {
4354                 ipr_err("Dump memory allocation failed\n");
4355                 return -ENOMEM;
4356         }
4357
4358         if (ioa_cfg->sis64)
4359                 ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES,
4360                                               sizeof(__be32 *)));
4361         else
4362                 ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES,
4363                                               sizeof(__be32 *)));
4364
4365         if (!ioa_data) {
4366                 ipr_err("Dump memory allocation failed\n");
4367                 kfree(dump);
4368                 return -ENOMEM;
4369         }
4370
4371         dump->ioa_dump.ioa_data = ioa_data;
4372
4373         kref_init(&dump->kref);
4374         dump->ioa_cfg = ioa_cfg;
4375
4376         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4377
4378         if (INACTIVE != ioa_cfg->sdt_state) {
4379                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4380                 vfree(dump->ioa_dump.ioa_data);
4381                 kfree(dump);
4382                 return 0;
4383         }
4384
4385         ioa_cfg->dump = dump;
4386         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4387         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4388                 ioa_cfg->dump_taken = 1;
4389                 schedule_work(&ioa_cfg->work_q);
4390         }
4391         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4392
4393         return 0;
4394 }
4395
4396 /**
4397  * ipr_free_dump - Free adapter dump memory
4398  * @ioa_cfg:    ioa config struct
4399  *
4400  * Return value:
4401  *      0 on success / other on failure
4402  **/
4403 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4404 {
4405         struct ipr_dump *dump;
4406         unsigned long lock_flags = 0;
4407
4408         ENTER;
4409
4410         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4411         dump = ioa_cfg->dump;
4412         if (!dump) {
4413                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4414                 return 0;
4415         }
4416
4417         ioa_cfg->dump = NULL;
4418         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4419
4420         kref_put(&dump->kref, ipr_release_dump);
4421
4422         LEAVE;
4423         return 0;
4424 }
4425
4426 /**
4427  * ipr_write_dump - Setup dump state of adapter
4428  * @filp:               open sysfs file
4429  * @kobj:               kobject struct
4430  * @bin_attr:           bin_attribute struct
4431  * @buf:                buffer
4432  * @off:                offset
4433  * @count:              buffer size
4434  *
4435  * Return value:
4436  *      number of bytes printed to buffer
4437  **/
4438 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4439                               struct bin_attribute *bin_attr,
4440                               char *buf, loff_t off, size_t count)
4441 {
4442         struct device *cdev = container_of(kobj, struct device, kobj);
4443         struct Scsi_Host *shost = class_to_shost(cdev);
4444         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4445         int rc;
4446
4447         if (!capable(CAP_SYS_ADMIN))
4448                 return -EACCES;
4449
4450         if (buf[0] == '1')
4451                 rc = ipr_alloc_dump(ioa_cfg);
4452         else if (buf[0] == '0')
4453                 rc = ipr_free_dump(ioa_cfg);
4454         else
4455                 return -EINVAL;
4456
4457         if (rc)
4458                 return rc;
4459         else
4460                 return count;
4461 }
4462
4463 static struct bin_attribute ipr_dump_attr = {
4464         .attr = {
4465                 .name = "dump",
4466                 .mode = S_IRUSR | S_IWUSR,
4467         },
4468         .size = 0,
4469         .read = ipr_read_dump,
4470         .write = ipr_write_dump
4471 };
4472 #else
4473 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4474 #endif
4475
4476 /**
4477  * ipr_change_queue_depth - Change the device's queue depth
4478  * @sdev:       scsi device struct
4479  * @qdepth:     depth to set
4480  * @reason:     calling context
4481  *
4482  * Return value:
4483  *      actual depth set
4484  **/
4485 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4486 {
4487         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4488         struct ipr_resource_entry *res;
4489         unsigned long lock_flags = 0;
4490
4491         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4492         res = (struct ipr_resource_entry *)sdev->hostdata;
4493
4494         if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4495                 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4496         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4497
4498         scsi_change_queue_depth(sdev, qdepth);
4499         return sdev->queue_depth;
4500 }
4501
4502 /**
4503  * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4504  * @dev:        device struct
4505  * @attr:       device attribute structure
4506  * @buf:        buffer
4507  *
4508  * Return value:
4509  *      number of bytes printed to buffer
4510  **/
4511 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4512 {
4513         struct scsi_device *sdev = to_scsi_device(dev);
4514         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4515         struct ipr_resource_entry *res;
4516         unsigned long lock_flags = 0;
4517         ssize_t len = -ENXIO;
4518
4519         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4520         res = (struct ipr_resource_entry *)sdev->hostdata;
4521         if (res)
4522                 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4523         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4524         return len;
4525 }
4526
4527 static struct device_attribute ipr_adapter_handle_attr = {
4528         .attr = {
4529                 .name =         "adapter_handle",
4530                 .mode =         S_IRUSR,
4531         },
4532         .show = ipr_show_adapter_handle
4533 };
4534
4535 /**
4536  * ipr_show_resource_path - Show the resource path or the resource address for
4537  *                          this device.
4538  * @dev:        device struct
4539  * @attr:       device attribute structure
4540  * @buf:        buffer
4541  *
4542  * Return value:
4543  *      number of bytes printed to buffer
4544  **/
4545 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4546 {
4547         struct scsi_device *sdev = to_scsi_device(dev);
4548         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4549         struct ipr_resource_entry *res;
4550         unsigned long lock_flags = 0;
4551         ssize_t len = -ENXIO;
4552         char buffer[IPR_MAX_RES_PATH_LENGTH];
4553
4554         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4555         res = (struct ipr_resource_entry *)sdev->hostdata;
4556         if (res && ioa_cfg->sis64)
4557                 len = snprintf(buf, PAGE_SIZE, "%s\n",
4558                                __ipr_format_res_path(res->res_path, buffer,
4559                                                      sizeof(buffer)));
4560         else if (res)
4561                 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4562                                res->bus, res->target, res->lun);
4563
4564         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4565         return len;
4566 }
4567
4568 static struct device_attribute ipr_resource_path_attr = {
4569         .attr = {
4570                 .name =         "resource_path",
4571                 .mode =         S_IRUGO,
4572         },
4573         .show = ipr_show_resource_path
4574 };
4575
4576 /**
4577  * ipr_show_device_id - Show the device_id for this device.
4578  * @dev:        device struct
4579  * @attr:       device attribute structure
4580  * @buf:        buffer
4581  *
4582  * Return value:
4583  *      number of bytes printed to buffer
4584  **/
4585 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4586 {
4587         struct scsi_device *sdev = to_scsi_device(dev);
4588         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4589         struct ipr_resource_entry *res;
4590         unsigned long lock_flags = 0;
4591         ssize_t len = -ENXIO;
4592
4593         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4594         res = (struct ipr_resource_entry *)sdev->hostdata;
4595         if (res && ioa_cfg->sis64)
4596                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4597         else if (res)
4598                 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4599
4600         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4601         return len;
4602 }
4603
4604 static struct device_attribute ipr_device_id_attr = {
4605         .attr = {
4606                 .name =         "device_id",
4607                 .mode =         S_IRUGO,
4608         },
4609         .show = ipr_show_device_id
4610 };
4611
4612 /**
4613  * ipr_show_resource_type - Show the resource type for this device.
4614  * @dev:        device struct
4615  * @attr:       device attribute structure
4616  * @buf:        buffer
4617  *
4618  * Return value:
4619  *      number of bytes printed to buffer
4620  **/
4621 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4622 {
4623         struct scsi_device *sdev = to_scsi_device(dev);
4624         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4625         struct ipr_resource_entry *res;
4626         unsigned long lock_flags = 0;
4627         ssize_t len = -ENXIO;
4628
4629         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4630         res = (struct ipr_resource_entry *)sdev->hostdata;
4631
4632         if (res)
4633                 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4634
4635         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4636         return len;
4637 }
4638
4639 static struct device_attribute ipr_resource_type_attr = {
4640         .attr = {
4641                 .name =         "resource_type",
4642                 .mode =         S_IRUGO,
4643         },
4644         .show = ipr_show_resource_type
4645 };
4646
4647 /**
4648  * ipr_show_raw_mode - Show the adapter's raw mode
4649  * @dev:        class device struct
4650  * @buf:        buffer
4651  *
4652  * Return value:
4653  *      number of bytes printed to buffer
4654  **/
4655 static ssize_t ipr_show_raw_mode(struct device *dev,
4656                                  struct device_attribute *attr, char *buf)
4657 {
4658         struct scsi_device *sdev = to_scsi_device(dev);
4659         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4660         struct ipr_resource_entry *res;
4661         unsigned long lock_flags = 0;
4662         ssize_t len;
4663
4664         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4665         res = (struct ipr_resource_entry *)sdev->hostdata;
4666         if (res)
4667                 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4668         else
4669                 len = -ENXIO;
4670         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4671         return len;
4672 }
4673
4674 /**
4675  * ipr_store_raw_mode - Change the adapter's raw mode
4676  * @dev:        class device struct
4677  * @buf:        buffer
4678  *
4679  * Return value:
4680  *      number of bytes printed to buffer
4681  **/
4682 static ssize_t ipr_store_raw_mode(struct device *dev,
4683                                   struct device_attribute *attr,
4684                                   const char *buf, size_t count)
4685 {
4686         struct scsi_device *sdev = to_scsi_device(dev);
4687         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4688         struct ipr_resource_entry *res;
4689         unsigned long lock_flags = 0;
4690         ssize_t len;
4691
4692         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4693         res = (struct ipr_resource_entry *)sdev->hostdata;
4694         if (res) {
4695                 if (ipr_is_af_dasd_device(res)) {
4696                         res->raw_mode = simple_strtoul(buf, NULL, 10);
4697                         len = strlen(buf);
4698                         if (res->sdev)
4699                                 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4700                                         res->raw_mode ? "enabled" : "disabled");
4701                 } else
4702                         len = -EINVAL;
4703         } else
4704                 len = -ENXIO;
4705         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4706         return len;
4707 }
4708
4709 static struct device_attribute ipr_raw_mode_attr = {
4710         .attr = {
4711                 .name =         "raw_mode",
4712                 .mode =         S_IRUGO | S_IWUSR,
4713         },
4714         .show = ipr_show_raw_mode,
4715         .store = ipr_store_raw_mode
4716 };
4717
4718 static struct device_attribute *ipr_dev_attrs[] = {
4719         &ipr_adapter_handle_attr,
4720         &ipr_resource_path_attr,
4721         &ipr_device_id_attr,
4722         &ipr_resource_type_attr,
4723         &ipr_raw_mode_attr,
4724         NULL,
4725 };
4726
4727 /**
4728  * ipr_biosparam - Return the HSC mapping
4729  * @sdev:                       scsi device struct
4730  * @block_device:       block device pointer
4731  * @capacity:           capacity of the device
4732  * @parm:                       Array containing returned HSC values.
4733  *
4734  * This function generates the HSC parms that fdisk uses.
4735  * We want to make sure we return something that places partitions
4736  * on 4k boundaries for best performance with the IOA.
4737  *
4738  * Return value:
4739  *      0 on success
4740  **/
4741 static int ipr_biosparam(struct scsi_device *sdev,
4742                          struct block_device *block_device,
4743                          sector_t capacity, int *parm)
4744 {
4745         int heads, sectors;
4746         sector_t cylinders;
4747
4748         heads = 128;
4749         sectors = 32;
4750
4751         cylinders = capacity;
4752         sector_div(cylinders, (128 * 32));
4753
4754         /* return result */
4755         parm[0] = heads;
4756         parm[1] = sectors;
4757         parm[2] = cylinders;
4758
4759         return 0;
4760 }
4761
4762 /**
4763  * ipr_find_starget - Find target based on bus/target.
4764  * @starget:    scsi target struct
4765  *
4766  * Return value:
4767  *      resource entry pointer if found / NULL if not found
4768  **/
4769 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4770 {
4771         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4772         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4773         struct ipr_resource_entry *res;
4774
4775         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4776                 if ((res->bus == starget->channel) &&
4777                     (res->target == starget->id)) {
4778                         return res;
4779                 }
4780         }
4781
4782         return NULL;
4783 }
4784
4785 static struct ata_port_info sata_port_info;
4786
4787 /**
4788  * ipr_target_alloc - Prepare for commands to a SCSI target
4789  * @starget:    scsi target struct
4790  *
4791  * If the device is a SATA device, this function allocates an
4792  * ATA port with libata, else it does nothing.
4793  *
4794  * Return value:
4795  *      0 on success / non-0 on failure
4796  **/
4797 static int ipr_target_alloc(struct scsi_target *starget)
4798 {
4799         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4800         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4801         struct ipr_sata_port *sata_port;
4802         struct ata_port *ap;
4803         struct ipr_resource_entry *res;
4804         unsigned long lock_flags;
4805
4806         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4807         res = ipr_find_starget(starget);
4808         starget->hostdata = NULL;
4809
4810         if (res && ipr_is_gata(res)) {
4811                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4812                 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4813                 if (!sata_port)
4814                         return -ENOMEM;
4815
4816                 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4817                 if (ap) {
4818                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4819                         sata_port->ioa_cfg = ioa_cfg;
4820                         sata_port->ap = ap;
4821                         sata_port->res = res;
4822
4823                         res->sata_port = sata_port;
4824                         ap->private_data = sata_port;
4825                         starget->hostdata = sata_port;
4826                 } else {
4827                         kfree(sata_port);
4828                         return -ENOMEM;
4829                 }
4830         }
4831         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4832
4833         return 0;
4834 }
4835
4836 /**
4837  * ipr_target_destroy - Destroy a SCSI target
4838  * @starget:    scsi target struct
4839  *
4840  * If the device was a SATA device, this function frees the libata
4841  * ATA port, else it does nothing.
4842  *
4843  **/
4844 static void ipr_target_destroy(struct scsi_target *starget)
4845 {
4846         struct ipr_sata_port *sata_port = starget->hostdata;
4847         struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4848         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4849
4850         if (ioa_cfg->sis64) {
4851                 if (!ipr_find_starget(starget)) {
4852                         if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4853                                 clear_bit(starget->id, ioa_cfg->array_ids);
4854                         else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4855                                 clear_bit(starget->id, ioa_cfg->vset_ids);
4856                         else if (starget->channel == 0)
4857                                 clear_bit(starget->id, ioa_cfg->target_ids);
4858                 }
4859         }
4860
4861         if (sata_port) {
4862                 starget->hostdata = NULL;
4863                 ata_sas_port_destroy(sata_port->ap);
4864                 kfree(sata_port);
4865         }
4866 }
4867
4868 /**
4869  * ipr_find_sdev - Find device based on bus/target/lun.
4870  * @sdev:       scsi device struct
4871  *
4872  * Return value:
4873  *      resource entry pointer if found / NULL if not found
4874  **/
4875 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4876 {
4877         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4878         struct ipr_resource_entry *res;
4879
4880         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4881                 if ((res->bus == sdev->channel) &&
4882                     (res->target == sdev->id) &&
4883                     (res->lun == sdev->lun))
4884                         return res;
4885         }
4886
4887         return NULL;
4888 }
4889
4890 /**
4891  * ipr_slave_destroy - Unconfigure a SCSI device
4892  * @sdev:       scsi device struct
4893  *
4894  * Return value:
4895  *      nothing
4896  **/
4897 static void ipr_slave_destroy(struct scsi_device *sdev)
4898 {
4899         struct ipr_resource_entry *res;
4900         struct ipr_ioa_cfg *ioa_cfg;
4901         unsigned long lock_flags = 0;
4902
4903         ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4904
4905         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4906         res = (struct ipr_resource_entry *) sdev->hostdata;
4907         if (res) {
4908                 if (res->sata_port)
4909                         res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4910                 sdev->hostdata = NULL;
4911                 res->sdev = NULL;
4912                 res->sata_port = NULL;
4913         }
4914         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4915 }
4916
4917 /**
4918  * ipr_slave_configure - Configure a SCSI device
4919  * @sdev:       scsi device struct
4920  *
4921  * This function configures the specified scsi device.
4922  *
4923  * Return value:
4924  *      0 on success
4925  **/
4926 static int ipr_slave_configure(struct scsi_device *sdev)
4927 {
4928         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4929         struct ipr_resource_entry *res;
4930         struct ata_port *ap = NULL;
4931         unsigned long lock_flags = 0;
4932         char buffer[IPR_MAX_RES_PATH_LENGTH];
4933
4934         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4935         res = sdev->hostdata;
4936         if (res) {
4937                 if (ipr_is_af_dasd_device(res))
4938                         sdev->type = TYPE_RAID;
4939                 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4940                         sdev->scsi_level = 4;
4941                         sdev->no_uld_attach = 1;
4942                 }
4943                 if (ipr_is_vset_device(res)) {
4944                         sdev->scsi_level = SCSI_SPC_3;
4945                         sdev->no_report_opcodes = 1;
4946                         blk_queue_rq_timeout(sdev->request_queue,
4947                                              IPR_VSET_RW_TIMEOUT);
4948                         blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4949                 }
4950                 if (ipr_is_gata(res) && res->sata_port)
4951                         ap = res->sata_port->ap;
4952                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4953
4954                 if (ap) {
4955                         scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4956                         ata_sas_slave_configure(sdev, ap);
4957                 }
4958
4959                 if (ioa_cfg->sis64)
4960                         sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4961                                     ipr_format_res_path(ioa_cfg,
4962                                 res->res_path, buffer, sizeof(buffer)));
4963                 return 0;
4964         }
4965         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4966         return 0;
4967 }
4968
4969 /**
4970  * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4971  * @sdev:       scsi device struct
4972  *
4973  * This function initializes an ATA port so that future commands
4974  * sent through queuecommand will work.
4975  *
4976  * Return value:
4977  *      0 on success
4978  **/
4979 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4980 {
4981         struct ipr_sata_port *sata_port = NULL;
4982         int rc = -ENXIO;
4983
4984         ENTER;
4985         if (sdev->sdev_target)
4986                 sata_port = sdev->sdev_target->hostdata;
4987         if (sata_port) {
4988                 rc = ata_sas_port_init(sata_port->ap);
4989                 if (rc == 0)
4990                         rc = ata_sas_sync_probe(sata_port->ap);
4991         }
4992
4993         if (rc)
4994                 ipr_slave_destroy(sdev);
4995
4996         LEAVE;
4997         return rc;
4998 }
4999
5000 /**
5001  * ipr_slave_alloc - Prepare for commands to a device.
5002  * @sdev:       scsi device struct
5003  *
5004  * This function saves a pointer to the resource entry
5005  * in the scsi device struct if the device exists. We
5006  * can then use this pointer in ipr_queuecommand when
5007  * handling new commands.
5008  *
5009  * Return value:
5010  *      0 on success / -ENXIO if device does not exist
5011  **/
5012 static int ipr_slave_alloc(struct scsi_device *sdev)
5013 {
5014         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
5015         struct ipr_resource_entry *res;
5016         unsigned long lock_flags;
5017         int rc = -ENXIO;
5018
5019         sdev->hostdata = NULL;
5020
5021         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5022
5023         res = ipr_find_sdev(sdev);
5024         if (res) {
5025                 res->sdev = sdev;
5026                 res->add_to_ml = 0;
5027                 res->in_erp = 0;
5028                 sdev->hostdata = res;
5029                 if (!ipr_is_naca_model(res))
5030                         res->needs_sync_complete = 1;
5031                 rc = 0;
5032                 if (ipr_is_gata(res)) {
5033                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5034                         return ipr_ata_slave_alloc(sdev);
5035                 }
5036         }
5037
5038         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5039
5040         return rc;
5041 }
5042
5043 /**
5044  * ipr_match_lun - Match function for specified LUN
5045  * @ipr_cmd:    ipr command struct
5046  * @device:             device to match (sdev)
5047  *
5048  * Returns:
5049  *      1 if command matches sdev / 0 if command does not match sdev
5050  **/
5051 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
5052 {
5053         if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
5054                 return 1;
5055         return 0;
5056 }
5057
5058 /**
5059  * ipr_cmnd_is_free - Check if a command is free or not
5060  * @ipr_cmd     ipr command struct
5061  *
5062  * Returns:
5063  *      true / false
5064  **/
5065 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd)
5066 {
5067         struct ipr_cmnd *loop_cmd;
5068
5069         list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) {
5070                 if (loop_cmd == ipr_cmd)
5071                         return true;
5072         }
5073
5074         return false;
5075 }
5076
5077 /**
5078  * ipr_match_res - Match function for specified resource entry
5079  * @ipr_cmd:    ipr command struct
5080  * @resource:   resource entry to match
5081  *
5082  * Returns:
5083  *      1 if command matches sdev / 0 if command does not match sdev
5084  **/
5085 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource)
5086 {
5087         struct ipr_resource_entry *res = resource;
5088
5089         if (res && ipr_cmd->ioarcb.res_handle == res->res_handle)
5090                 return 1;
5091         return 0;
5092 }
5093
5094 /**
5095  * ipr_wait_for_ops - Wait for matching commands to complete
5096  * @ipr_cmd:    ipr command struct
5097  * @device:             device to match (sdev)
5098  * @match:              match function to use
5099  *
5100  * Returns:
5101  *      SUCCESS / FAILED
5102  **/
5103 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
5104                             int (*match)(struct ipr_cmnd *, void *))
5105 {
5106         struct ipr_cmnd *ipr_cmd;
5107         int wait, i;
5108         unsigned long flags;
5109         struct ipr_hrr_queue *hrrq;
5110         signed long timeout = IPR_ABORT_TASK_TIMEOUT;
5111         DECLARE_COMPLETION_ONSTACK(comp);
5112
5113         ENTER;
5114         do {
5115                 wait = 0;
5116
5117                 for_each_hrrq(hrrq, ioa_cfg) {
5118                         spin_lock_irqsave(hrrq->lock, flags);
5119                         for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5120                                 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5121                                 if (!ipr_cmnd_is_free(ipr_cmd)) {
5122                                         if (match(ipr_cmd, device)) {
5123                                                 ipr_cmd->eh_comp = &comp;
5124                                                 wait++;
5125                                         }
5126                                 }
5127                         }
5128                         spin_unlock_irqrestore(hrrq->lock, flags);
5129                 }
5130
5131                 if (wait) {
5132                         timeout = wait_for_completion_timeout(&comp, timeout);
5133
5134                         if (!timeout) {
5135                                 wait = 0;
5136
5137                                 for_each_hrrq(hrrq, ioa_cfg) {
5138                                         spin_lock_irqsave(hrrq->lock, flags);
5139                                         for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5140                                                 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5141                                                 if (!ipr_cmnd_is_free(ipr_cmd)) {
5142                                                         if (match(ipr_cmd, device)) {
5143                                                                 ipr_cmd->eh_comp = NULL;
5144                                                                 wait++;
5145                                                         }
5146                                                 }
5147                                         }
5148                                         spin_unlock_irqrestore(hrrq->lock, flags);
5149                                 }
5150
5151                                 if (wait)
5152                                         dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
5153                                 LEAVE;
5154                                 return wait ? FAILED : SUCCESS;
5155                         }
5156                 }
5157         } while (wait);
5158
5159         LEAVE;
5160         return SUCCESS;
5161 }
5162
5163 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
5164 {
5165         struct ipr_ioa_cfg *ioa_cfg;
5166         unsigned long lock_flags = 0;
5167         int rc = SUCCESS;
5168
5169         ENTER;
5170         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5171         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5172
5173         if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5174                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5175                 dev_err(&ioa_cfg->pdev->dev,
5176                         "Adapter being reset as a result of error recovery.\n");
5177
5178                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5179                         ioa_cfg->sdt_state = GET_DUMP;
5180         }
5181
5182         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5183         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5184         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5185
5186         /* If we got hit with a host reset while we were already resetting
5187          the adapter for some reason, and the reset failed. */
5188         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5189                 ipr_trace;
5190                 rc = FAILED;
5191         }
5192
5193         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5194         LEAVE;
5195         return rc;
5196 }
5197
5198 /**
5199  * ipr_device_reset - Reset the device
5200  * @ioa_cfg:    ioa config struct
5201  * @res:                resource entry struct
5202  *
5203  * This function issues a device reset to the affected device.
5204  * If the device is a SCSI device, a LUN reset will be sent
5205  * to the device first. If that does not work, a target reset
5206  * will be sent. If the device is a SATA device, a PHY reset will
5207  * be sent.
5208  *
5209  * Return value:
5210  *      0 on success / non-zero on failure
5211  **/
5212 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5213                             struct ipr_resource_entry *res)
5214 {
5215         struct ipr_cmnd *ipr_cmd;
5216         struct ipr_ioarcb *ioarcb;
5217         struct ipr_cmd_pkt *cmd_pkt;
5218         struct ipr_ioarcb_ata_regs *regs;
5219         u32 ioasc;
5220
5221         ENTER;
5222         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5223         ioarcb = &ipr_cmd->ioarcb;
5224         cmd_pkt = &ioarcb->cmd_pkt;
5225
5226         if (ipr_cmd->ioa_cfg->sis64) {
5227                 regs = &ipr_cmd->i.ata_ioadl.regs;
5228                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5229         } else
5230                 regs = &ioarcb->u.add_data.u.regs;
5231
5232         ioarcb->res_handle = res->res_handle;
5233         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5234         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5235         if (ipr_is_gata(res)) {
5236                 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5237                 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5238                 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5239         }
5240
5241         ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5242         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5243         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5244         if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5245                 if (ipr_cmd->ioa_cfg->sis64)
5246                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5247                                sizeof(struct ipr_ioasa_gata));
5248                 else
5249                         memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5250                                sizeof(struct ipr_ioasa_gata));
5251         }
5252
5253         LEAVE;
5254         return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5255 }
5256
5257 /**
5258  * ipr_sata_reset - Reset the SATA port
5259  * @link:       SATA link to reset
5260  * @classes:    class of the attached device
5261  *
5262  * This function issues a SATA phy reset to the affected ATA link.
5263  *
5264  * Return value:
5265  *      0 on success / non-zero on failure
5266  **/
5267 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5268                                 unsigned long deadline)
5269 {
5270         struct ipr_sata_port *sata_port = link->ap->private_data;
5271         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5272         struct ipr_resource_entry *res;
5273         unsigned long lock_flags = 0;
5274         int rc = -ENXIO, ret;
5275
5276         ENTER;
5277         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5278         while (ioa_cfg->in_reset_reload) {
5279                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5280                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5281                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5282         }
5283
5284         res = sata_port->res;
5285         if (res) {
5286                 rc = ipr_device_reset(ioa_cfg, res);
5287                 *classes = res->ata_class;
5288                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5289
5290                 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5291                 if (ret != SUCCESS) {
5292                         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5293                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5294                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5295
5296                         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5297                 }
5298         } else
5299                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5300
5301         LEAVE;
5302         return rc;
5303 }
5304
5305 /**
5306  * ipr_eh_dev_reset - Reset the device
5307  * @scsi_cmd:   scsi command struct
5308  *
5309  * This function issues a device reset to the affected device.
5310  * A LUN reset will be sent to the device first. If that does
5311  * not work, a target reset will be sent.
5312  *
5313  * Return value:
5314  *      SUCCESS / FAILED
5315  **/
5316 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5317 {
5318         struct ipr_cmnd *ipr_cmd;
5319         struct ipr_ioa_cfg *ioa_cfg;
5320         struct ipr_resource_entry *res;
5321         struct ata_port *ap;
5322         int rc = 0, i;
5323         struct ipr_hrr_queue *hrrq;
5324
5325         ENTER;
5326         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5327         res = scsi_cmd->device->hostdata;
5328
5329         /*
5330          * If we are currently going through reset/reload, return failed. This will force the
5331          * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5332          * reset to complete
5333          */
5334         if (ioa_cfg->in_reset_reload)
5335                 return FAILED;
5336         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5337                 return FAILED;
5338
5339         for_each_hrrq(hrrq, ioa_cfg) {
5340                 spin_lock(&hrrq->_lock);
5341                 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5342                         ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5343
5344                         if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5345                                 if (!ipr_cmd->qc)
5346                                         continue;
5347                                 if (ipr_cmnd_is_free(ipr_cmd))
5348                                         continue;
5349
5350                                 ipr_cmd->done = ipr_sata_eh_done;
5351                                 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5352                                         ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5353                                         ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5354                                 }
5355                         }
5356                 }
5357                 spin_unlock(&hrrq->_lock);
5358         }
5359         res->resetting_device = 1;
5360         scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5361
5362         if (ipr_is_gata(res) && res->sata_port) {
5363                 ap = res->sata_port->ap;
5364                 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5365                 ata_std_error_handler(ap);
5366                 spin_lock_irq(scsi_cmd->device->host->host_lock);
5367         } else
5368                 rc = ipr_device_reset(ioa_cfg, res);
5369         res->resetting_device = 0;
5370         res->reset_occurred = 1;
5371
5372         LEAVE;
5373         return rc ? FAILED : SUCCESS;
5374 }
5375
5376 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5377 {
5378         int rc;
5379         struct ipr_ioa_cfg *ioa_cfg;
5380         struct ipr_resource_entry *res;
5381
5382         ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5383         res = cmd->device->hostdata;
5384
5385         if (!res)
5386                 return FAILED;
5387
5388         spin_lock_irq(cmd->device->host->host_lock);
5389         rc = __ipr_eh_dev_reset(cmd);
5390         spin_unlock_irq(cmd->device->host->host_lock);
5391
5392         if (rc == SUCCESS) {
5393                 if (ipr_is_gata(res) && res->sata_port)
5394                         rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5395                 else
5396                         rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5397         }
5398
5399         return rc;
5400 }
5401
5402 /**
5403  * ipr_bus_reset_done - Op done function for bus reset.
5404  * @ipr_cmd:    ipr command struct
5405  *
5406  * This function is the op done function for a bus reset
5407  *
5408  * Return value:
5409  *      none
5410  **/
5411 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5412 {
5413         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5414         struct ipr_resource_entry *res;
5415
5416         ENTER;
5417         if (!ioa_cfg->sis64)
5418                 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5419                         if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5420                                 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5421                                 break;
5422                         }
5423                 }
5424
5425         /*
5426          * If abort has not completed, indicate the reset has, else call the
5427          * abort's done function to wake the sleeping eh thread
5428          */
5429         if (ipr_cmd->sibling->sibling)
5430                 ipr_cmd->sibling->sibling = NULL;
5431         else
5432                 ipr_cmd->sibling->done(ipr_cmd->sibling);
5433
5434         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5435         LEAVE;
5436 }
5437
5438 /**
5439  * ipr_abort_timeout - An abort task has timed out
5440  * @ipr_cmd:    ipr command struct
5441  *
5442  * This function handles when an abort task times out. If this
5443  * happens we issue a bus reset since we have resources tied
5444  * up that must be freed before returning to the midlayer.
5445  *
5446  * Return value:
5447  *      none
5448  **/
5449 static void ipr_abort_timeout(struct timer_list *t)
5450 {
5451         struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
5452         struct ipr_cmnd *reset_cmd;
5453         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5454         struct ipr_cmd_pkt *cmd_pkt;
5455         unsigned long lock_flags = 0;
5456
5457         ENTER;
5458         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5459         if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5460                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5461                 return;
5462         }
5463
5464         sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5465         reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5466         ipr_cmd->sibling = reset_cmd;
5467         reset_cmd->sibling = ipr_cmd;
5468         reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5469         cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5470         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5471         cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5472         cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5473
5474         ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5475         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5476         LEAVE;
5477 }
5478
5479 /**
5480  * ipr_cancel_op - Cancel specified op
5481  * @scsi_cmd:   scsi command struct
5482  *
5483  * This function cancels specified op.
5484  *
5485  * Return value:
5486  *      SUCCESS / FAILED
5487  **/
5488 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5489 {
5490         struct ipr_cmnd *ipr_cmd;
5491         struct ipr_ioa_cfg *ioa_cfg;
5492         struct ipr_resource_entry *res;
5493         struct ipr_cmd_pkt *cmd_pkt;
5494         u32 ioasc, int_reg;
5495         int i, op_found = 0;
5496         struct ipr_hrr_queue *hrrq;
5497
5498         ENTER;
5499         ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5500         res = scsi_cmd->device->hostdata;
5501
5502         /* If we are currently going through reset/reload, return failed.
5503          * This will force the mid-layer to call ipr_eh_host_reset,
5504          * which will then go to sleep and wait for the reset to complete
5505          */
5506         if (ioa_cfg->in_reset_reload ||
5507             ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5508                 return FAILED;
5509         if (!res)
5510                 return FAILED;
5511
5512         /*
5513          * If we are aborting a timed out op, chances are that the timeout was caused
5514          * by a still not detected EEH error. In such cases, reading a register will
5515          * trigger the EEH recovery infrastructure.
5516          */
5517         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5518
5519         if (!ipr_is_gscsi(res))
5520                 return FAILED;
5521
5522         for_each_hrrq(hrrq, ioa_cfg) {
5523                 spin_lock(&hrrq->_lock);
5524                 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5525                         if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) {
5526                                 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) {
5527                                         op_found = 1;
5528                                         break;
5529                                 }
5530                         }
5531                 }
5532                 spin_unlock(&hrrq->_lock);
5533         }
5534
5535         if (!op_found)
5536                 return SUCCESS;
5537
5538         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5539         ipr_cmd->ioarcb.res_handle = res->res_handle;
5540         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5541         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5542         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5543         ipr_cmd->u.sdev = scsi_cmd->device;
5544
5545         scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5546                     scsi_cmd->cmnd[0]);
5547         ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5548         ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5549
5550         /*
5551          * If the abort task timed out and we sent a bus reset, we will get
5552          * one the following responses to the abort
5553          */
5554         if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5555                 ioasc = 0;
5556                 ipr_trace;
5557         }
5558
5559         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5560         if (!ipr_is_naca_model(res))
5561                 res->needs_sync_complete = 1;
5562
5563         LEAVE;
5564         return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5565 }
5566
5567 /**
5568  * ipr_eh_abort - Abort a single op
5569  * @scsi_cmd:   scsi command struct
5570  *
5571  * Return value:
5572  *      0 if scan in progress / 1 if scan is complete
5573  **/
5574 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5575 {
5576         unsigned long lock_flags;
5577         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5578         int rc = 0;
5579
5580         spin_lock_irqsave(shost->host_lock, lock_flags);
5581         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5582                 rc = 1;
5583         if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5584                 rc = 1;
5585         spin_unlock_irqrestore(shost->host_lock, lock_flags);
5586         return rc;
5587 }
5588
5589 /**
5590  * ipr_eh_host_reset - Reset the host adapter
5591  * @scsi_cmd:   scsi command struct
5592  *
5593  * Return value:
5594  *      SUCCESS / FAILED
5595  **/
5596 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5597 {
5598         unsigned long flags;
5599         int rc;
5600         struct ipr_ioa_cfg *ioa_cfg;
5601
5602         ENTER;
5603
5604         ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5605
5606         spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5607         rc = ipr_cancel_op(scsi_cmd);
5608         spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5609
5610         if (rc == SUCCESS)
5611                 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5612         LEAVE;
5613         return rc;
5614 }
5615
5616 /**
5617  * ipr_handle_other_interrupt - Handle "other" interrupts
5618  * @ioa_cfg:    ioa config struct
5619  * @int_reg:    interrupt register
5620  *
5621  * Return value:
5622  *      IRQ_NONE / IRQ_HANDLED
5623  **/
5624 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5625                                               u32 int_reg)
5626 {
5627         irqreturn_t rc = IRQ_HANDLED;
5628         u32 int_mask_reg;
5629
5630         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5631         int_reg &= ~int_mask_reg;
5632
5633         /* If an interrupt on the adapter did not occur, ignore it.
5634          * Or in the case of SIS 64, check for a stage change interrupt.
5635          */
5636         if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5637                 if (ioa_cfg->sis64) {
5638                         int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5639                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5640                         if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5641
5642                                 /* clear stage change */
5643                                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5644                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5645                                 list_del(&ioa_cfg->reset_cmd->queue);
5646                                 del_timer(&ioa_cfg->reset_cmd->timer);
5647                                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5648                                 return IRQ_HANDLED;
5649                         }
5650                 }
5651
5652                 return IRQ_NONE;
5653         }
5654
5655         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5656                 /* Mask the interrupt */
5657                 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5658                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5659
5660                 list_del(&ioa_cfg->reset_cmd->queue);
5661                 del_timer(&ioa_cfg->reset_cmd->timer);
5662                 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5663         } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5664                 if (ioa_cfg->clear_isr) {
5665                         if (ipr_debug && printk_ratelimit())
5666                                 dev_err(&ioa_cfg->pdev->dev,
5667                                         "Spurious interrupt detected. 0x%08X\n", int_reg);
5668                         writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5669                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5670                         return IRQ_NONE;
5671                 }
5672         } else {
5673                 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5674                         ioa_cfg->ioa_unit_checked = 1;
5675                 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5676                         dev_err(&ioa_cfg->pdev->dev,
5677                                 "No Host RRQ. 0x%08X\n", int_reg);
5678                 else
5679                         dev_err(&ioa_cfg->pdev->dev,
5680                                 "Permanent IOA failure. 0x%08X\n", int_reg);
5681
5682                 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5683                         ioa_cfg->sdt_state = GET_DUMP;
5684
5685                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5686                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5687         }
5688
5689         return rc;
5690 }
5691
5692 /**
5693  * ipr_isr_eh - Interrupt service routine error handler
5694  * @ioa_cfg:    ioa config struct
5695  * @msg:        message to log
5696  *
5697  * Return value:
5698  *      none
5699  **/
5700 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5701 {
5702         ioa_cfg->errors_logged++;
5703         dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5704
5705         if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5706                 ioa_cfg->sdt_state = GET_DUMP;
5707
5708         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5709 }
5710
5711 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5712                                                 struct list_head *doneq)
5713 {
5714         u32 ioasc;
5715         u16 cmd_index;
5716         struct ipr_cmnd *ipr_cmd;
5717         struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5718         int num_hrrq = 0;
5719
5720         /* If interrupts are disabled, ignore the interrupt */
5721         if (!hrr_queue->allow_interrupts)
5722                 return 0;
5723
5724         while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5725                hrr_queue->toggle_bit) {
5726
5727                 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5728                              IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5729                              IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5730
5731                 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5732                              cmd_index < hrr_queue->min_cmd_id)) {
5733                         ipr_isr_eh(ioa_cfg,
5734                                 "Invalid response handle from IOA: ",
5735                                 cmd_index);
5736                         break;
5737                 }
5738
5739                 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5740                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5741
5742                 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5743
5744                 list_move_tail(&ipr_cmd->queue, doneq);
5745
5746                 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5747                         hrr_queue->hrrq_curr++;
5748                 } else {
5749                         hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5750                         hrr_queue->toggle_bit ^= 1u;
5751                 }
5752                 num_hrrq++;
5753                 if (budget > 0 && num_hrrq >= budget)
5754                         break;
5755         }
5756
5757         return num_hrrq;
5758 }
5759
5760 static int ipr_iopoll(struct irq_poll *iop, int budget)
5761 {
5762         struct ipr_ioa_cfg *ioa_cfg;
5763         struct ipr_hrr_queue *hrrq;
5764         struct ipr_cmnd *ipr_cmd, *temp;
5765         unsigned long hrrq_flags;
5766         int completed_ops;
5767         LIST_HEAD(doneq);
5768
5769         hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5770         ioa_cfg = hrrq->ioa_cfg;
5771
5772         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5773         completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5774
5775         if (completed_ops < budget)
5776                 irq_poll_complete(iop);
5777         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5778
5779         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5780                 list_del(&ipr_cmd->queue);
5781                 del_timer(&ipr_cmd->timer);
5782                 ipr_cmd->fast_done(ipr_cmd);
5783         }
5784
5785         return completed_ops;
5786 }
5787
5788 /**
5789  * ipr_isr - Interrupt service routine
5790  * @irq:        irq number
5791  * @devp:       pointer to ioa config struct
5792  *
5793  * Return value:
5794  *      IRQ_NONE / IRQ_HANDLED
5795  **/
5796 static irqreturn_t ipr_isr(int irq, void *devp)
5797 {
5798         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5799         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5800         unsigned long hrrq_flags = 0;
5801         u32 int_reg = 0;
5802         int num_hrrq = 0;
5803         int irq_none = 0;
5804         struct ipr_cmnd *ipr_cmd, *temp;
5805         irqreturn_t rc = IRQ_NONE;
5806         LIST_HEAD(doneq);
5807
5808         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5809         /* If interrupts are disabled, ignore the interrupt */
5810         if (!hrrq->allow_interrupts) {
5811                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5812                 return IRQ_NONE;
5813         }
5814
5815         while (1) {
5816                 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5817                         rc =  IRQ_HANDLED;
5818
5819                         if (!ioa_cfg->clear_isr)
5820                                 break;
5821
5822                         /* Clear the PCI interrupt */
5823                         num_hrrq = 0;
5824                         do {
5825                                 writel(IPR_PCII_HRRQ_UPDATED,
5826                                      ioa_cfg->regs.clr_interrupt_reg32);
5827                                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5828                         } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5829                                 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5830
5831                 } else if (rc == IRQ_NONE && irq_none == 0) {
5832                         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5833                         irq_none++;
5834                 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5835                            int_reg & IPR_PCII_HRRQ_UPDATED) {
5836                         ipr_isr_eh(ioa_cfg,
5837                                 "Error clearing HRRQ: ", num_hrrq);
5838                         rc = IRQ_HANDLED;
5839                         break;
5840                 } else
5841                         break;
5842         }
5843
5844         if (unlikely(rc == IRQ_NONE))
5845                 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5846
5847         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5848         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5849                 list_del(&ipr_cmd->queue);
5850                 del_timer(&ipr_cmd->timer);
5851                 ipr_cmd->fast_done(ipr_cmd);
5852         }
5853         return rc;
5854 }
5855
5856 /**
5857  * ipr_isr_mhrrq - Interrupt service routine
5858  * @irq:        irq number
5859  * @devp:       pointer to ioa config struct
5860  *
5861  * Return value:
5862  *      IRQ_NONE / IRQ_HANDLED
5863  **/
5864 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5865 {
5866         struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5867         struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5868         unsigned long hrrq_flags = 0;
5869         struct ipr_cmnd *ipr_cmd, *temp;
5870         irqreturn_t rc = IRQ_NONE;
5871         LIST_HEAD(doneq);
5872
5873         spin_lock_irqsave(hrrq->lock, hrrq_flags);
5874
5875         /* If interrupts are disabled, ignore the interrupt */
5876         if (!hrrq->allow_interrupts) {
5877                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5878                 return IRQ_NONE;
5879         }
5880
5881         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5882                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5883                        hrrq->toggle_bit) {
5884                         irq_poll_sched(&hrrq->iopoll);
5885                         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5886                         return IRQ_HANDLED;
5887                 }
5888         } else {
5889                 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5890                         hrrq->toggle_bit)
5891
5892                         if (ipr_process_hrrq(hrrq, -1, &doneq))
5893                                 rc =  IRQ_HANDLED;
5894         }
5895
5896         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5897
5898         list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5899                 list_del(&ipr_cmd->queue);
5900                 del_timer(&ipr_cmd->timer);
5901                 ipr_cmd->fast_done(ipr_cmd);
5902         }
5903         return rc;
5904 }
5905
5906 /**
5907  * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5908  * @ioa_cfg:    ioa config struct
5909  * @ipr_cmd:    ipr command struct
5910  *
5911  * Return value:
5912  *      0 on success / -1 on failure
5913  **/
5914 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5915                              struct ipr_cmnd *ipr_cmd)
5916 {
5917         int i, nseg;
5918         struct scatterlist *sg;
5919         u32 length;
5920         u32 ioadl_flags = 0;
5921         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5922         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5923         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5924
5925         length = scsi_bufflen(scsi_cmd);
5926         if (!length)
5927                 return 0;
5928
5929         nseg = scsi_dma_map(scsi_cmd);
5930         if (nseg < 0) {
5931                 if (printk_ratelimit())
5932                         dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5933                 return -1;
5934         }
5935
5936         ipr_cmd->dma_use_sg = nseg;
5937
5938         ioarcb->data_transfer_length = cpu_to_be32(length);
5939         ioarcb->ioadl_len =
5940                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5941
5942         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5943                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5944                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5945         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5946                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5947
5948         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5949                 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5950                 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5951                 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5952         }
5953
5954         ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5955         return 0;
5956 }
5957
5958 /**
5959  * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5960  * @ioa_cfg:    ioa config struct
5961  * @ipr_cmd:    ipr command struct
5962  *
5963  * Return value:
5964  *      0 on success / -1 on failure
5965  **/
5966 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5967                            struct ipr_cmnd *ipr_cmd)
5968 {
5969         int i, nseg;
5970         struct scatterlist *sg;
5971         u32 length;
5972         u32 ioadl_flags = 0;
5973         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5974         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5975         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5976
5977         length = scsi_bufflen(scsi_cmd);
5978         if (!length)
5979                 return 0;
5980
5981         nseg = scsi_dma_map(scsi_cmd);
5982         if (nseg < 0) {
5983                 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5984                 return -1;
5985         }
5986
5987         ipr_cmd->dma_use_sg = nseg;
5988
5989         if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5990                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5991                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5992                 ioarcb->data_transfer_length = cpu_to_be32(length);
5993                 ioarcb->ioadl_len =
5994                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5995         } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5996                 ioadl_flags = IPR_IOADL_FLAGS_READ;
5997                 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5998                 ioarcb->read_ioadl_len =
5999                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6000         }
6001
6002         if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
6003                 ioadl = ioarcb->u.add_data.u.ioadl;
6004                 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
6005                                     offsetof(struct ipr_ioarcb, u.add_data));
6006                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6007         }
6008
6009         scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
6010                 ioadl[i].flags_and_data_len =
6011                         cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6012                 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
6013         }
6014
6015         ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6016         return 0;
6017 }
6018
6019 /**
6020  * __ipr_erp_done - Process completion of ERP for a device
6021  * @ipr_cmd:            ipr command struct
6022  *
6023  * This function copies the sense buffer into the scsi_cmd
6024  * struct and pushes the scsi_done function.
6025  *
6026  * Return value:
6027  *      nothing
6028  **/
6029 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6030 {
6031         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6032         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6033         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6034
6035         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6036                 scsi_cmd->result |= (DID_ERROR << 16);
6037                 scmd_printk(KERN_ERR, scsi_cmd,
6038                             "Request Sense failed with IOASC: 0x%08X\n", ioasc);
6039         } else {
6040                 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
6041                        SCSI_SENSE_BUFFERSIZE);
6042         }
6043
6044         if (res) {
6045                 if (!ipr_is_naca_model(res))
6046                         res->needs_sync_complete = 1;
6047                 res->in_erp = 0;
6048         }
6049         scsi_dma_unmap(ipr_cmd->scsi_cmd);
6050         scsi_cmd->scsi_done(scsi_cmd);
6051         if (ipr_cmd->eh_comp)
6052                 complete(ipr_cmd->eh_comp);
6053         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6054 }
6055
6056 /**
6057  * ipr_erp_done - Process completion of ERP for a device
6058  * @ipr_cmd:            ipr command struct
6059  *
6060  * This function copies the sense buffer into the scsi_cmd
6061  * struct and pushes the scsi_done function.
6062  *
6063  * Return value:
6064  *      nothing
6065  **/
6066 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6067 {
6068         struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6069         unsigned long hrrq_flags;
6070
6071         spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6072         __ipr_erp_done(ipr_cmd);
6073         spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6074 }
6075
6076 /**
6077  * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
6078  * @ipr_cmd:    ipr command struct
6079  *
6080  * Return value:
6081  *      none
6082  **/
6083 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
6084 {
6085         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6086         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6087         dma_addr_t dma_addr = ipr_cmd->dma_addr;
6088
6089         memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
6090         ioarcb->data_transfer_length = 0;
6091         ioarcb->read_data_transfer_length = 0;
6092         ioarcb->ioadl_len = 0;
6093         ioarcb->read_ioadl_len = 0;
6094         ioasa->hdr.ioasc = 0;
6095         ioasa->hdr.residual_data_len = 0;
6096
6097         if (ipr_cmd->ioa_cfg->sis64)
6098                 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6099                         cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
6100         else {
6101                 ioarcb->write_ioadl_addr =
6102                         cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
6103                 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6104         }
6105 }
6106
6107 /**
6108  * __ipr_erp_request_sense - Send request sense to a device
6109  * @ipr_cmd:    ipr command struct
6110  *
6111  * This function sends a request sense to a device as a result
6112  * of a check condition.
6113  *
6114  * Return value:
6115  *      nothing
6116  **/
6117 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6118 {
6119         struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6120         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6121
6122         if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6123                 __ipr_erp_done(ipr_cmd);
6124                 return;
6125         }
6126
6127         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6128
6129         cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
6130         cmd_pkt->cdb[0] = REQUEST_SENSE;
6131         cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
6132         cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
6133         cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6134         cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
6135
6136         ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
6137                        SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
6138
6139         ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
6140                    IPR_REQUEST_SENSE_TIMEOUT * 2);
6141 }
6142
6143 /**
6144  * ipr_erp_request_sense - Send request sense to a device
6145  * @ipr_cmd:    ipr command struct
6146  *
6147  * This function sends a request sense to a device as a result
6148  * of a check condition.
6149  *
6150  * Return value:
6151  *      nothing
6152  **/
6153 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6154 {
6155         struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6156         unsigned long hrrq_flags;
6157
6158         spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6159         __ipr_erp_request_sense(ipr_cmd);
6160         spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6161 }
6162
6163 /**
6164  * ipr_erp_cancel_all - Send cancel all to a device
6165  * @ipr_cmd:    ipr command struct
6166  *
6167  * This function sends a cancel all to a device to clear the
6168  * queue. If we are running TCQ on the device, QERR is set to 1,
6169  * which means all outstanding ops have been dropped on the floor.
6170  * Cancel all will return them to us.
6171  *
6172  * Return value:
6173  *      nothing
6174  **/
6175 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
6176 {
6177         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6178         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6179         struct ipr_cmd_pkt *cmd_pkt;
6180
6181         res->in_erp = 1;
6182
6183         ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6184
6185         if (!scsi_cmd->device->simple_tags) {
6186                 __ipr_erp_request_sense(ipr_cmd);
6187                 return;
6188         }
6189
6190         cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6191         cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
6192         cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
6193
6194         ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
6195                    IPR_CANCEL_ALL_TIMEOUT);
6196 }
6197
6198 /**
6199  * ipr_dump_ioasa - Dump contents of IOASA
6200  * @ioa_cfg:    ioa config struct
6201  * @ipr_cmd:    ipr command struct
6202  * @res:                resource entry struct
6203  *
6204  * This function is invoked by the interrupt handler when ops
6205  * fail. It will log the IOASA if appropriate. Only called
6206  * for GPDD ops.
6207  *
6208  * Return value:
6209  *      none
6210  **/
6211 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
6212                            struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
6213 {
6214         int i;
6215         u16 data_len;
6216         u32 ioasc, fd_ioasc;
6217         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6218         __be32 *ioasa_data = (__be32 *)ioasa;
6219         int error_index;
6220
6221         ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
6222         fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
6223
6224         if (0 == ioasc)
6225                 return;
6226
6227         if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6228                 return;
6229
6230         if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6231                 error_index = ipr_get_error(fd_ioasc);
6232         else
6233                 error_index = ipr_get_error(ioasc);
6234
6235         if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6236                 /* Don't log an error if the IOA already logged one */
6237                 if (ioasa->hdr.ilid != 0)
6238                         return;
6239
6240                 if (!ipr_is_gscsi(res))
6241                         return;
6242
6243                 if (ipr_error_table[error_index].log_ioasa == 0)
6244                         return;
6245         }
6246
6247         ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6248
6249         data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6250         if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6251                 data_len = sizeof(struct ipr_ioasa64);
6252         else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6253                 data_len = sizeof(struct ipr_ioasa);
6254
6255         ipr_err("IOASA Dump:\n");
6256
6257         for (i = 0; i < data_len / 4; i += 4) {
6258                 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6259                         be32_to_cpu(ioasa_data[i]),
6260                         be32_to_cpu(ioasa_data[i+1]),
6261                         be32_to_cpu(ioasa_data[i+2]),
6262                         be32_to_cpu(ioasa_data[i+3]));
6263         }
6264 }
6265
6266 /**
6267  * ipr_gen_sense - Generate SCSI sense data from an IOASA
6268  * @ioasa:              IOASA
6269  * @sense_buf:  sense data buffer
6270  *
6271  * Return value:
6272  *      none
6273  **/
6274 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6275 {
6276         u32 failing_lba;
6277         u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6278         struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6279         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6280         u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6281
6282         memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6283
6284         if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6285                 return;
6286
6287         ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6288
6289         if (ipr_is_vset_device(res) &&
6290             ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6291             ioasa->u.vset.failing_lba_hi != 0) {
6292                 sense_buf[0] = 0x72;
6293                 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6294                 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6295                 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6296
6297                 sense_buf[7] = 12;
6298                 sense_buf[8] = 0;
6299                 sense_buf[9] = 0x0A;
6300                 sense_buf[10] = 0x80;
6301
6302                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6303
6304                 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6305                 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6306                 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6307                 sense_buf[15] = failing_lba & 0x000000ff;
6308
6309                 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6310
6311                 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6312                 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6313                 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6314                 sense_buf[19] = failing_lba & 0x000000ff;
6315         } else {
6316                 sense_buf[0] = 0x70;
6317                 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6318                 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6319                 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6320
6321                 /* Illegal request */
6322                 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6323                     (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6324                         sense_buf[7] = 10;      /* additional length */
6325
6326                         /* IOARCB was in error */
6327                         if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6328                                 sense_buf[15] = 0xC0;
6329                         else    /* Parameter data was invalid */
6330                                 sense_buf[15] = 0x80;
6331
6332                         sense_buf[16] =
6333                             ((IPR_FIELD_POINTER_MASK &
6334                               be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6335                         sense_buf[17] =
6336                             (IPR_FIELD_POINTER_MASK &
6337                              be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6338                 } else {
6339                         if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6340                                 if (ipr_is_vset_device(res))
6341                                         failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6342                                 else
6343                                         failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6344
6345                                 sense_buf[0] |= 0x80;   /* Or in the Valid bit */
6346                                 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6347                                 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6348                                 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6349                                 sense_buf[6] = failing_lba & 0x000000ff;
6350                         }
6351
6352                         sense_buf[7] = 6;       /* additional length */
6353                 }
6354         }
6355 }
6356
6357 /**
6358  * ipr_get_autosense - Copy autosense data to sense buffer
6359  * @ipr_cmd:    ipr command struct
6360  *
6361  * This function copies the autosense buffer to the buffer
6362  * in the scsi_cmd, if there is autosense available.
6363  *
6364  * Return value:
6365  *      1 if autosense was available / 0 if not
6366  **/
6367 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6368 {
6369         struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6370         struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6371
6372         if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6373                 return 0;
6374
6375         if (ipr_cmd->ioa_cfg->sis64)
6376                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6377                        min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6378                            SCSI_SENSE_BUFFERSIZE));
6379         else
6380                 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6381                        min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6382                            SCSI_SENSE_BUFFERSIZE));
6383         return 1;
6384 }
6385
6386 /**
6387  * ipr_erp_start - Process an error response for a SCSI op
6388  * @ioa_cfg:    ioa config struct
6389  * @ipr_cmd:    ipr command struct
6390  *
6391  * This function determines whether or not to initiate ERP
6392  * on the affected device.
6393  *
6394  * Return value:
6395  *      nothing
6396  **/
6397 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6398                               struct ipr_cmnd *ipr_cmd)
6399 {
6400         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6401         struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6402         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6403         u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6404
6405         if (!res) {
6406                 __ipr_scsi_eh_done(ipr_cmd);
6407                 return;
6408         }
6409
6410         if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6411                 ipr_gen_sense(ipr_cmd);
6412
6413         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6414
6415         switch (masked_ioasc) {
6416         case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6417                 if (ipr_is_naca_model(res))
6418                         scsi_cmd->result |= (DID_ABORT << 16);
6419                 else
6420                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6421                 break;
6422         case IPR_IOASC_IR_RESOURCE_HANDLE:
6423         case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6424                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6425                 break;
6426         case IPR_IOASC_HW_SEL_TIMEOUT:
6427                 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6428                 if (!ipr_is_naca_model(res))
6429                         res->needs_sync_complete = 1;
6430                 break;
6431         case IPR_IOASC_SYNC_REQUIRED:
6432                 if (!res->in_erp)
6433                         res->needs_sync_complete = 1;
6434                 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6435                 break;
6436         case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6437         case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6438                 /*
6439                  * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6440                  * so SCSI mid-layer and upper layers handle it accordingly.
6441                  */
6442                 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6443                         scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6444                 break;
6445         case IPR_IOASC_BUS_WAS_RESET:
6446         case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6447                 /*
6448                  * Report the bus reset and ask for a retry. The device
6449                  * will give CC/UA the next command.
6450                  */
6451                 if (!res->resetting_device)
6452                         scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6453                 scsi_cmd->result |= (DID_ERROR << 16);
6454                 if (!ipr_is_naca_model(res))
6455                         res->needs_sync_complete = 1;
6456                 break;
6457         case IPR_IOASC_HW_DEV_BUS_STATUS:
6458                 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6459                 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6460                         if (!ipr_get_autosense(ipr_cmd)) {
6461                                 if (!ipr_is_naca_model(res)) {
6462                                         ipr_erp_cancel_all(ipr_cmd);
6463                                         return;
6464                                 }
6465                         }
6466                 }
6467                 if (!ipr_is_naca_model(res))
6468                         res->needs_sync_complete = 1;
6469                 break;
6470         case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6471                 break;
6472         case IPR_IOASC_IR_NON_OPTIMIZED:
6473                 if (res->raw_mode) {
6474                         res->raw_mode = 0;
6475                         scsi_cmd->result |= (DID_IMM_RETRY << 16);
6476                 } else
6477                         scsi_cmd->result |= (DID_ERROR << 16);
6478                 break;
6479         default:
6480                 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6481                         scsi_cmd->result |= (DID_ERROR << 16);
6482                 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6483                         res->needs_sync_complete = 1;
6484                 break;
6485         }
6486
6487         scsi_dma_unmap(ipr_cmd->scsi_cmd);
6488         scsi_cmd->scsi_done(scsi_cmd);
6489         if (ipr_cmd->eh_comp)
6490                 complete(ipr_cmd->eh_comp);
6491         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6492 }
6493
6494 /**
6495  * ipr_scsi_done - mid-layer done function
6496  * @ipr_cmd:    ipr command struct
6497  *
6498  * This function is invoked by the interrupt handler for
6499  * ops generated by the SCSI mid-layer
6500  *
6501  * Return value:
6502  *      none
6503  **/
6504 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6505 {
6506         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6507         struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6508         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6509         unsigned long lock_flags;
6510
6511         scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6512
6513         if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6514                 scsi_dma_unmap(scsi_cmd);
6515
6516                 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6517                 scsi_cmd->scsi_done(scsi_cmd);
6518                 if (ipr_cmd->eh_comp)
6519                         complete(ipr_cmd->eh_comp);
6520                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6521                 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6522         } else {
6523                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6524                 spin_lock(&ipr_cmd->hrrq->_lock);
6525                 ipr_erp_start(ioa_cfg, ipr_cmd);
6526                 spin_unlock(&ipr_cmd->hrrq->_lock);
6527                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6528         }
6529 }
6530
6531 /**
6532  * ipr_queuecommand - Queue a mid-layer request
6533  * @shost:              scsi host struct
6534  * @scsi_cmd:   scsi command struct
6535  *
6536  * This function queues a request generated by the mid-layer.
6537  *
6538  * Return value:
6539  *      0 on success
6540  *      SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6541  *      SCSI_MLQUEUE_HOST_BUSY if host is busy
6542  **/
6543 static int ipr_queuecommand(struct Scsi_Host *shost,
6544                             struct scsi_cmnd *scsi_cmd)
6545 {
6546         struct ipr_ioa_cfg *ioa_cfg;
6547         struct ipr_resource_entry *res;
6548         struct ipr_ioarcb *ioarcb;
6549         struct ipr_cmnd *ipr_cmd;
6550         unsigned long hrrq_flags, lock_flags;
6551         int rc;
6552         struct ipr_hrr_queue *hrrq;
6553         int hrrq_id;
6554
6555         ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6556
6557         scsi_cmd->result = (DID_OK << 16);
6558         res = scsi_cmd->device->hostdata;
6559
6560         if (ipr_is_gata(res) && res->sata_port) {
6561                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6562                 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6563                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6564                 return rc;
6565         }
6566
6567         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6568         hrrq = &ioa_cfg->hrrq[hrrq_id];
6569
6570         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6571         /*
6572          * We are currently blocking all devices due to a host reset
6573          * We have told the host to stop giving us new requests, but
6574          * ERP ops don't count. FIXME
6575          */
6576         if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6577                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6578                 return SCSI_MLQUEUE_HOST_BUSY;
6579         }
6580
6581         /*
6582          * FIXME - Create scsi_set_host_offline interface
6583          *  and the ioa_is_dead check can be removed
6584          */
6585         if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6586                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6587                 goto err_nodev;
6588         }
6589
6590         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6591         if (ipr_cmd == NULL) {
6592                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6593                 return SCSI_MLQUEUE_HOST_BUSY;
6594         }
6595         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6596
6597         ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6598         ioarcb = &ipr_cmd->ioarcb;
6599
6600         memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6601         ipr_cmd->scsi_cmd = scsi_cmd;
6602         ipr_cmd->done = ipr_scsi_eh_done;
6603
6604         if (ipr_is_gscsi(res)) {
6605                 if (scsi_cmd->underflow == 0)
6606                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6607
6608                 if (res->reset_occurred) {
6609                         res->reset_occurred = 0;
6610                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6611                 }
6612         }
6613
6614         if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6615                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6616
6617                 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6618                 if (scsi_cmd->flags & SCMD_TAGGED)
6619                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6620                 else
6621                         ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6622         }
6623
6624         if (scsi_cmd->cmnd[0] >= 0xC0 &&
6625             (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6626                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6627         }
6628         if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6629                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6630
6631                 if (scsi_cmd->underflow == 0)
6632                         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6633         }
6634
6635         if (ioa_cfg->sis64)
6636                 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6637         else
6638                 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6639
6640         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6641         if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6642                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6643                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6644                 if (!rc)
6645                         scsi_dma_unmap(scsi_cmd);
6646                 return SCSI_MLQUEUE_HOST_BUSY;
6647         }
6648
6649         if (unlikely(hrrq->ioa_is_dead)) {
6650                 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6651                 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6652                 scsi_dma_unmap(scsi_cmd);
6653                 goto err_nodev;
6654         }
6655
6656         ioarcb->res_handle = res->res_handle;
6657         if (res->needs_sync_complete) {
6658                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6659                 res->needs_sync_complete = 0;
6660         }
6661         list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6662         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6663         ipr_send_command(ipr_cmd);
6664         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6665         return 0;
6666
6667 err_nodev:
6668         spin_lock_irqsave(hrrq->lock, hrrq_flags);
6669         memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6670         scsi_cmd->result = (DID_NO_CONNECT << 16);
6671         scsi_cmd->scsi_done(scsi_cmd);
6672         spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6673         return 0;
6674 }
6675
6676 /**
6677  * ipr_ioctl - IOCTL handler
6678  * @sdev:       scsi device struct
6679  * @cmd:        IOCTL cmd
6680  * @arg:        IOCTL arg
6681  *
6682  * Return value:
6683  *      0 on success / other on failure
6684  **/
6685 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6686 {
6687         struct ipr_resource_entry *res;
6688
6689         res = (struct ipr_resource_entry *)sdev->hostdata;
6690         if (res && ipr_is_gata(res)) {
6691                 if (cmd == HDIO_GET_IDENTITY)
6692                         return -ENOTTY;
6693                 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6694         }
6695
6696         return -EINVAL;
6697 }
6698
6699 /**
6700  * ipr_info - Get information about the card/driver
6701  * @scsi_host:  scsi host struct
6702  *
6703  * Return value:
6704  *      pointer to buffer with description string
6705  **/
6706 static const char *ipr_ioa_info(struct Scsi_Host *host)
6707 {
6708         static char buffer[512];
6709         struct ipr_ioa_cfg *ioa_cfg;
6710         unsigned long lock_flags = 0;
6711
6712         ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6713
6714         spin_lock_irqsave(host->host_lock, lock_flags);
6715         sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6716         spin_unlock_irqrestore(host->host_lock, lock_flags);
6717
6718         return buffer;
6719 }
6720
6721 static struct scsi_host_template driver_template = {
6722         .module = THIS_MODULE,
6723         .name = "IPR",
6724         .info = ipr_ioa_info,
6725         .ioctl = ipr_ioctl,
6726         .queuecommand = ipr_queuecommand,
6727         .eh_abort_handler = ipr_eh_abort,
6728         .eh_device_reset_handler = ipr_eh_dev_reset,
6729         .eh_host_reset_handler = ipr_eh_host_reset,
6730         .slave_alloc = ipr_slave_alloc,
6731         .slave_configure = ipr_slave_configure,
6732         .slave_destroy = ipr_slave_destroy,
6733         .scan_finished = ipr_scan_finished,
6734         .target_alloc = ipr_target_alloc,
6735         .target_destroy = ipr_target_destroy,
6736         .change_queue_depth = ipr_change_queue_depth,
6737         .bios_param = ipr_biosparam,
6738         .can_queue = IPR_MAX_COMMANDS,
6739         .this_id = -1,
6740         .sg_tablesize = IPR_MAX_SGLIST,
6741         .max_sectors = IPR_IOA_MAX_SECTORS,
6742         .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6743         .use_clustering = ENABLE_CLUSTERING,
6744         .shost_attrs = ipr_ioa_attrs,
6745         .sdev_attrs = ipr_dev_attrs,
6746         .proc_name = IPR_NAME,
6747 };
6748
6749 /**
6750  * ipr_ata_phy_reset - libata phy_reset handler
6751  * @ap:         ata port to reset
6752  *
6753  **/
6754 static void ipr_ata_phy_reset(struct ata_port *ap)
6755 {
6756         unsigned long flags;
6757         struct ipr_sata_port *sata_port = ap->private_data;
6758         struct ipr_resource_entry *res = sata_port->res;
6759         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6760         int rc;
6761
6762         ENTER;
6763         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6764         while (ioa_cfg->in_reset_reload) {
6765                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6766                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6767                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6768         }
6769
6770         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6771                 goto out_unlock;
6772
6773         rc = ipr_device_reset(ioa_cfg, res);
6774
6775         if (rc) {
6776                 ap->link.device[0].class = ATA_DEV_NONE;
6777                 goto out_unlock;
6778         }
6779
6780         ap->link.device[0].class = res->ata_class;
6781         if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6782                 ap->link.device[0].class = ATA_DEV_NONE;
6783
6784 out_unlock:
6785         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6786         LEAVE;
6787 }
6788
6789 /**
6790  * ipr_ata_post_internal - Cleanup after an internal command
6791  * @qc: ATA queued command
6792  *
6793  * Return value:
6794  *      none
6795  **/
6796 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6797 {
6798         struct ipr_sata_port *sata_port = qc->ap->private_data;
6799         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6800         struct ipr_cmnd *ipr_cmd;
6801         struct ipr_hrr_queue *hrrq;
6802         unsigned long flags;
6803
6804         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6805         while (ioa_cfg->in_reset_reload) {
6806                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6807                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6808                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6809         }
6810
6811         for_each_hrrq(hrrq, ioa_cfg) {
6812                 spin_lock(&hrrq->_lock);
6813                 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6814                         if (ipr_cmd->qc == qc) {
6815                                 ipr_device_reset(ioa_cfg, sata_port->res);
6816                                 break;
6817                         }
6818                 }
6819                 spin_unlock(&hrrq->_lock);
6820         }
6821         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6822 }
6823
6824 /**
6825  * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6826  * @regs:       destination
6827  * @tf: source ATA taskfile
6828  *
6829  * Return value:
6830  *      none
6831  **/
6832 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6833                              struct ata_taskfile *tf)
6834 {
6835         regs->feature = tf->feature;
6836         regs->nsect = tf->nsect;
6837         regs->lbal = tf->lbal;
6838         regs->lbam = tf->lbam;
6839         regs->lbah = tf->lbah;
6840         regs->device = tf->device;
6841         regs->command = tf->command;
6842         regs->hob_feature = tf->hob_feature;
6843         regs->hob_nsect = tf->hob_nsect;
6844         regs->hob_lbal = tf->hob_lbal;
6845         regs->hob_lbam = tf->hob_lbam;
6846         regs->hob_lbah = tf->hob_lbah;
6847         regs->ctl = tf->ctl;
6848 }
6849
6850 /**
6851  * ipr_sata_done - done function for SATA commands
6852  * @ipr_cmd:    ipr command struct
6853  *
6854  * This function is invoked by the interrupt handler for
6855  * ops generated by the SCSI mid-layer to SATA devices
6856  *
6857  * Return value:
6858  *      none
6859  **/
6860 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6861 {
6862         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6863         struct ata_queued_cmd *qc = ipr_cmd->qc;
6864         struct ipr_sata_port *sata_port = qc->ap->private_data;
6865         struct ipr_resource_entry *res = sata_port->res;
6866         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6867
6868         spin_lock(&ipr_cmd->hrrq->_lock);
6869         if (ipr_cmd->ioa_cfg->sis64)
6870                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6871                        sizeof(struct ipr_ioasa_gata));
6872         else
6873                 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6874                        sizeof(struct ipr_ioasa_gata));
6875         ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6876
6877         if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6878                 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6879
6880         if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6881                 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6882         else
6883                 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6884         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6885         spin_unlock(&ipr_cmd->hrrq->_lock);
6886         ata_qc_complete(qc);
6887 }
6888
6889 /**
6890  * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6891  * @ipr_cmd:    ipr command struct
6892  * @qc:         ATA queued command
6893  *
6894  **/
6895 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6896                                   struct ata_queued_cmd *qc)
6897 {
6898         u32 ioadl_flags = 0;
6899         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6900         struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6901         struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6902         int len = qc->nbytes;
6903         struct scatterlist *sg;
6904         unsigned int si;
6905         dma_addr_t dma_addr = ipr_cmd->dma_addr;
6906
6907         if (len == 0)
6908                 return;
6909
6910         if (qc->dma_dir == DMA_TO_DEVICE) {
6911                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6912                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6913         } else if (qc->dma_dir == DMA_FROM_DEVICE)
6914                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6915
6916         ioarcb->data_transfer_length = cpu_to_be32(len);
6917         ioarcb->ioadl_len =
6918                 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6919         ioarcb->u.sis64_addr_data.data_ioadl_addr =
6920                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6921
6922         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6923                 ioadl64->flags = cpu_to_be32(ioadl_flags);
6924                 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6925                 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6926
6927                 last_ioadl64 = ioadl64;
6928                 ioadl64++;
6929         }
6930
6931         if (likely(last_ioadl64))
6932                 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6933 }
6934
6935 /**
6936  * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6937  * @ipr_cmd:    ipr command struct
6938  * @qc:         ATA queued command
6939  *
6940  **/
6941 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6942                                 struct ata_queued_cmd *qc)
6943 {
6944         u32 ioadl_flags = 0;
6945         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6946         struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6947         struct ipr_ioadl_desc *last_ioadl = NULL;
6948         int len = qc->nbytes;
6949         struct scatterlist *sg;
6950         unsigned int si;
6951
6952         if (len == 0)
6953                 return;
6954
6955         if (qc->dma_dir == DMA_TO_DEVICE) {
6956                 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6957                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6958                 ioarcb->data_transfer_length = cpu_to_be32(len);
6959                 ioarcb->ioadl_len =
6960                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6961         } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6962                 ioadl_flags = IPR_IOADL_FLAGS_READ;
6963                 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6964                 ioarcb->read_ioadl_len =
6965                         cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6966         }
6967
6968         for_each_sg(qc->sg, sg, qc->n_elem, si) {
6969                 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6970                 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6971
6972                 last_ioadl = ioadl;
6973                 ioadl++;
6974         }
6975
6976         if (likely(last_ioadl))
6977                 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6978 }
6979
6980 /**
6981  * ipr_qc_defer - Get a free ipr_cmd
6982  * @qc: queued command
6983  *
6984  * Return value:
6985  *      0 if success
6986  **/
6987 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6988 {
6989         struct ata_port *ap = qc->ap;
6990         struct ipr_sata_port *sata_port = ap->private_data;
6991         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6992         struct ipr_cmnd *ipr_cmd;
6993         struct ipr_hrr_queue *hrrq;
6994         int hrrq_id;
6995
6996         hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6997         hrrq = &ioa_cfg->hrrq[hrrq_id];
6998
6999         qc->lldd_task = NULL;
7000         spin_lock(&hrrq->_lock);
7001         if (unlikely(hrrq->ioa_is_dead)) {
7002                 spin_unlock(&hrrq->_lock);
7003                 return 0;
7004         }
7005
7006         if (unlikely(!hrrq->allow_cmds)) {
7007                 spin_unlock(&hrrq->_lock);
7008                 return ATA_DEFER_LINK;
7009         }
7010
7011         ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
7012         if (ipr_cmd == NULL) {
7013                 spin_unlock(&hrrq->_lock);
7014                 return ATA_DEFER_LINK;
7015         }
7016
7017         qc->lldd_task = ipr_cmd;
7018         spin_unlock(&hrrq->_lock);
7019         return 0;
7020 }
7021
7022 /**
7023  * ipr_qc_issue - Issue a SATA qc to a device
7024  * @qc: queued command
7025  *
7026  * Return value:
7027  *      0 if success
7028  **/
7029 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
7030 {
7031         struct ata_port *ap = qc->ap;
7032         struct ipr_sata_port *sata_port = ap->private_data;
7033         struct ipr_resource_entry *res = sata_port->res;
7034         struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
7035         struct ipr_cmnd *ipr_cmd;
7036         struct ipr_ioarcb *ioarcb;
7037         struct ipr_ioarcb_ata_regs *regs;
7038
7039         if (qc->lldd_task == NULL)
7040                 ipr_qc_defer(qc);
7041
7042         ipr_cmd = qc->lldd_task;
7043         if (ipr_cmd == NULL)
7044                 return AC_ERR_SYSTEM;
7045
7046         qc->lldd_task = NULL;
7047         spin_lock(&ipr_cmd->hrrq->_lock);
7048         if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
7049                         ipr_cmd->hrrq->ioa_is_dead)) {
7050                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7051                 spin_unlock(&ipr_cmd->hrrq->_lock);
7052                 return AC_ERR_SYSTEM;
7053         }
7054
7055         ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
7056         ioarcb = &ipr_cmd->ioarcb;
7057
7058         if (ioa_cfg->sis64) {
7059                 regs = &ipr_cmd->i.ata_ioadl.regs;
7060                 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
7061         } else
7062                 regs = &ioarcb->u.add_data.u.regs;
7063
7064         memset(regs, 0, sizeof(*regs));
7065         ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
7066
7067         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7068         ipr_cmd->qc = qc;
7069         ipr_cmd->done = ipr_sata_done;
7070         ipr_cmd->ioarcb.res_handle = res->res_handle;
7071         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
7072         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
7073         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
7074         ipr_cmd->dma_use_sg = qc->n_elem;
7075
7076         if (ioa_cfg->sis64)
7077                 ipr_build_ata_ioadl64(ipr_cmd, qc);
7078         else
7079                 ipr_build_ata_ioadl(ipr_cmd, qc);
7080
7081         regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
7082         ipr_copy_sata_tf(regs, &qc->tf);
7083         memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
7084         ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
7085
7086         switch (qc->tf.protocol) {
7087         case ATA_PROT_NODATA:
7088         case ATA_PROT_PIO:
7089                 break;
7090
7091         case ATA_PROT_DMA:
7092                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7093                 break;
7094
7095         case ATAPI_PROT_PIO:
7096         case ATAPI_PROT_NODATA:
7097                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7098                 break;
7099
7100         case ATAPI_PROT_DMA:
7101                 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7102                 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7103                 break;
7104
7105         default:
7106                 WARN_ON(1);
7107                 spin_unlock(&ipr_cmd->hrrq->_lock);
7108                 return AC_ERR_INVALID;
7109         }
7110
7111         ipr_send_command(ipr_cmd);
7112         spin_unlock(&ipr_cmd->hrrq->_lock);
7113
7114         return 0;
7115 }
7116
7117 /**
7118  * ipr_qc_fill_rtf - Read result TF
7119  * @qc: ATA queued command
7120  *
7121  * Return value:
7122  *      true
7123  **/
7124 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
7125 {
7126         struct ipr_sata_port *sata_port = qc->ap->private_data;
7127         struct ipr_ioasa_gata *g = &sata_port->ioasa;
7128         struct ata_taskfile *tf = &qc->result_tf;
7129
7130         tf->feature = g->error;
7131         tf->nsect = g->nsect;
7132         tf->lbal = g->lbal;
7133         tf->lbam = g->lbam;
7134         tf->lbah = g->lbah;
7135         tf->device = g->device;
7136         tf->command = g->status;
7137         tf->hob_nsect = g->hob_nsect;
7138         tf->hob_lbal = g->hob_lbal;
7139         tf->hob_lbam = g->hob_lbam;
7140         tf->hob_lbah = g->hob_lbah;
7141
7142         return true;
7143 }
7144
7145 static struct ata_port_operations ipr_sata_ops = {
7146         .phy_reset = ipr_ata_phy_reset,
7147         .hardreset = ipr_sata_reset,
7148         .post_internal_cmd = ipr_ata_post_internal,
7149         .qc_prep = ata_noop_qc_prep,
7150         .qc_defer = ipr_qc_defer,
7151         .qc_issue = ipr_qc_issue,
7152         .qc_fill_rtf = ipr_qc_fill_rtf,
7153         .port_start = ata_sas_port_start,
7154         .port_stop = ata_sas_port_stop
7155 };
7156
7157 static struct ata_port_info sata_port_info = {
7158         .flags          = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
7159                           ATA_FLAG_SAS_HOST,
7160         .pio_mask       = ATA_PIO4_ONLY,
7161         .mwdma_mask     = ATA_MWDMA2,
7162         .udma_mask      = ATA_UDMA6,
7163         .port_ops       = &ipr_sata_ops
7164 };
7165
7166 #ifdef CONFIG_PPC_PSERIES
7167 static const u16 ipr_blocked_processors[] = {
7168         PVR_NORTHSTAR,
7169         PVR_PULSAR,
7170         PVR_POWER4,
7171         PVR_ICESTAR,
7172         PVR_SSTAR,
7173         PVR_POWER4p,
7174         PVR_630,
7175         PVR_630p
7176 };
7177
7178 /**
7179  * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
7180  * @ioa_cfg:    ioa cfg struct
7181  *
7182  * Adapters that use Gemstone revision < 3.1 do not work reliably on
7183  * certain pSeries hardware. This function determines if the given
7184  * adapter is in one of these confgurations or not.
7185  *
7186  * Return value:
7187  *      1 if adapter is not supported / 0 if adapter is supported
7188  **/
7189 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
7190 {
7191         int i;
7192
7193         if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
7194                 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
7195                         if (pvr_version_is(ipr_blocked_processors[i]))
7196                                 return 1;
7197                 }
7198         }
7199         return 0;
7200 }
7201 #else
7202 #define ipr_invalid_adapter(ioa_cfg) 0
7203 #endif
7204
7205 /**
7206  * ipr_ioa_bringdown_done - IOA bring down completion.
7207  * @ipr_cmd:    ipr command struct
7208  *
7209  * This function processes the completion of an adapter bring down.
7210  * It wakes any reset sleepers.
7211  *
7212  * Return value:
7213  *      IPR_RC_JOB_RETURN
7214  **/
7215 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
7216 {
7217         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7218         int i;
7219
7220         ENTER;
7221         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
7222                 ipr_trace;
7223                 ioa_cfg->scsi_unblock = 1;
7224                 schedule_work(&ioa_cfg->work_q);
7225         }
7226
7227         ioa_cfg->in_reset_reload = 0;
7228         ioa_cfg->reset_retries = 0;
7229         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7230                 spin_lock(&ioa_cfg->hrrq[i]._lock);
7231                 ioa_cfg->hrrq[i].ioa_is_dead = 1;
7232                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7233         }
7234         wmb();
7235
7236         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7237         wake_up_all(&ioa_cfg->reset_wait_q);
7238         LEAVE;
7239
7240         return IPR_RC_JOB_RETURN;
7241 }
7242
7243 /**
7244  * ipr_ioa_reset_done - IOA reset completion.
7245  * @ipr_cmd:    ipr command struct
7246  *
7247  * This function processes the completion of an adapter reset.
7248  * It schedules any necessary mid-layer add/removes and
7249  * wakes any reset sleepers.
7250  *
7251  * Return value:
7252  *      IPR_RC_JOB_RETURN
7253  **/
7254 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7255 {
7256         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7257         struct ipr_resource_entry *res;
7258         int j;
7259
7260         ENTER;
7261         ioa_cfg->in_reset_reload = 0;
7262         for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7263                 spin_lock(&ioa_cfg->hrrq[j]._lock);
7264                 ioa_cfg->hrrq[j].allow_cmds = 1;
7265                 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7266         }
7267         wmb();
7268         ioa_cfg->reset_cmd = NULL;
7269         ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7270
7271         list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7272                 if (res->add_to_ml || res->del_from_ml) {
7273                         ipr_trace;
7274                         break;
7275                 }
7276         }
7277         schedule_work(&ioa_cfg->work_q);
7278
7279         for (j = 0; j < IPR_NUM_HCAMS; j++) {
7280                 list_del_init(&ioa_cfg->hostrcb[j]->queue);
7281                 if (j < IPR_NUM_LOG_HCAMS)
7282                         ipr_send_hcam(ioa_cfg,
7283                                 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
7284                                 ioa_cfg->hostrcb[j]);
7285                 else
7286                         ipr_send_hcam(ioa_cfg,
7287                                 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
7288                                 ioa_cfg->hostrcb[j]);
7289         }
7290
7291         scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7292         dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7293
7294         ioa_cfg->reset_retries = 0;
7295         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7296         wake_up_all(&ioa_cfg->reset_wait_q);
7297
7298         ioa_cfg->scsi_unblock = 1;
7299         schedule_work(&ioa_cfg->work_q);
7300         LEAVE;
7301         return IPR_RC_JOB_RETURN;
7302 }
7303
7304 /**
7305  * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7306  * @supported_dev:      supported device struct
7307  * @vpids:                      vendor product id struct
7308  *
7309  * Return value:
7310  *      none
7311  **/
7312 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7313                                  struct ipr_std_inq_vpids *vpids)
7314 {
7315         memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7316         memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7317         supported_dev->num_records = 1;
7318         supported_dev->data_length =
7319                 cpu_to_be16(sizeof(struct ipr_supported_device));
7320         supported_dev->reserved = 0;
7321 }
7322
7323 /**
7324  * ipr_set_supported_devs - Send Set Supported Devices for a device
7325  * @ipr_cmd:    ipr command struct
7326  *
7327  * This function sends a Set Supported Devices to the adapter
7328  *
7329  * Return value:
7330  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7331  **/
7332 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7333 {
7334         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7335         struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7336         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7337         struct ipr_resource_entry *res = ipr_cmd->u.res;
7338
7339         ipr_cmd->job_step = ipr_ioa_reset_done;
7340
7341         list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7342                 if (!ipr_is_scsi_disk(res))
7343                         continue;
7344
7345                 ipr_cmd->u.res = res;
7346                 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7347
7348                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7349                 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7350                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7351
7352                 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7353                 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7354                 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7355                 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7356
7357                 ipr_init_ioadl(ipr_cmd,
7358                                ioa_cfg->vpd_cbs_dma +
7359                                  offsetof(struct ipr_misc_cbs, supp_dev),
7360                                sizeof(struct ipr_supported_device),
7361                                IPR_IOADL_FLAGS_WRITE_LAST);
7362
7363                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7364                            IPR_SET_SUP_DEVICE_TIMEOUT);
7365
7366                 if (!ioa_cfg->sis64)
7367                         ipr_cmd->job_step = ipr_set_supported_devs;
7368                 LEAVE;
7369                 return IPR_RC_JOB_RETURN;
7370         }
7371
7372         LEAVE;
7373         return IPR_RC_JOB_CONTINUE;
7374 }
7375
7376 /**
7377  * ipr_get_mode_page - Locate specified mode page
7378  * @mode_pages: mode page buffer
7379  * @page_code:  page code to find
7380  * @len:                minimum required length for mode page
7381  *
7382  * Return value:
7383  *      pointer to mode page / NULL on failure
7384  **/
7385 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7386                                u32 page_code, u32 len)
7387 {
7388         struct ipr_mode_page_hdr *mode_hdr;
7389         u32 page_length;
7390         u32 length;
7391
7392         if (!mode_pages || (mode_pages->hdr.length == 0))
7393                 return NULL;
7394
7395         length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7396         mode_hdr = (struct ipr_mode_page_hdr *)
7397                 (mode_pages->data + mode_pages->hdr.block_desc_len);
7398
7399         while (length) {
7400                 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7401                         if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7402                                 return mode_hdr;
7403                         break;
7404                 } else {
7405                         page_length = (sizeof(struct ipr_mode_page_hdr) +
7406                                        mode_hdr->page_length);
7407                         length -= page_length;
7408                         mode_hdr = (struct ipr_mode_page_hdr *)
7409                                 ((unsigned long)mode_hdr + page_length);
7410                 }
7411         }
7412         return NULL;
7413 }
7414
7415 /**
7416  * ipr_check_term_power - Check for term power errors
7417  * @ioa_cfg:    ioa config struct
7418  * @mode_pages: IOAFP mode pages buffer
7419  *
7420  * Check the IOAFP's mode page 28 for term power errors
7421  *
7422  * Return value:
7423  *      nothing
7424  **/
7425 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7426                                  struct ipr_mode_pages *mode_pages)
7427 {
7428         int i;
7429         int entry_length;
7430         struct ipr_dev_bus_entry *bus;
7431         struct ipr_mode_page28 *mode_page;
7432
7433         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7434                                       sizeof(struct ipr_mode_page28));
7435
7436         entry_length = mode_page->entry_length;
7437
7438         bus = mode_page->bus;
7439
7440         for (i = 0; i < mode_page->num_entries; i++) {
7441                 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7442                         dev_err(&ioa_cfg->pdev->dev,
7443                                 "Term power is absent on scsi bus %d\n",
7444                                 bus->res_addr.bus);
7445                 }
7446
7447                 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7448         }
7449 }
7450
7451 /**
7452  * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7453  * @ioa_cfg:    ioa config struct
7454  *
7455  * Looks through the config table checking for SES devices. If
7456  * the SES device is in the SES table indicating a maximum SCSI
7457  * bus speed, the speed is limited for the bus.
7458  *
7459  * Return value:
7460  *      none
7461  **/
7462 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7463 {
7464         u32 max_xfer_rate;
7465         int i;
7466
7467         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7468                 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7469                                                        ioa_cfg->bus_attr[i].bus_width);
7470
7471                 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7472                         ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7473         }
7474 }
7475
7476 /**
7477  * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7478  * @ioa_cfg:    ioa config struct
7479  * @mode_pages: mode page 28 buffer
7480  *
7481  * Updates mode page 28 based on driver configuration
7482  *
7483  * Return value:
7484  *      none
7485  **/
7486 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7487                                           struct ipr_mode_pages *mode_pages)
7488 {
7489         int i, entry_length;
7490         struct ipr_dev_bus_entry *bus;
7491         struct ipr_bus_attributes *bus_attr;
7492         struct ipr_mode_page28 *mode_page;
7493
7494         mode_page = ipr_get_mode_page(mode_pages, 0x28,
7495                                       sizeof(struct ipr_mode_page28));
7496
7497         entry_length = mode_page->entry_length;
7498
7499         /* Loop for each device bus entry */
7500         for (i = 0, bus = mode_page->bus;
7501              i < mode_page->num_entries;
7502              i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7503                 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7504                         dev_err(&ioa_cfg->pdev->dev,
7505                                 "Invalid resource address reported: 0x%08X\n",
7506                                 IPR_GET_PHYS_LOC(bus->res_addr));
7507                         continue;
7508                 }
7509
7510                 bus_attr = &ioa_cfg->bus_attr[i];
7511                 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7512                 bus->bus_width = bus_attr->bus_width;
7513                 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7514                 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7515                 if (bus_attr->qas_enabled)
7516                         bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7517                 else
7518                         bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7519         }
7520 }
7521
7522 /**
7523  * ipr_build_mode_select - Build a mode select command
7524  * @ipr_cmd:    ipr command struct
7525  * @res_handle: resource handle to send command to
7526  * @parm:               Byte 2 of Mode Sense command
7527  * @dma_addr:   DMA buffer address
7528  * @xfer_len:   data transfer length
7529  *
7530  * Return value:
7531  *      none
7532  **/
7533 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7534                                   __be32 res_handle, u8 parm,
7535                                   dma_addr_t dma_addr, u8 xfer_len)
7536 {
7537         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7538
7539         ioarcb->res_handle = res_handle;
7540         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7541         ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7542         ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7543         ioarcb->cmd_pkt.cdb[1] = parm;
7544         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7545
7546         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7547 }
7548
7549 /**
7550  * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7551  * @ipr_cmd:    ipr command struct
7552  *
7553  * This function sets up the SCSI bus attributes and sends
7554  * a Mode Select for Page 28 to activate them.
7555  *
7556  * Return value:
7557  *      IPR_RC_JOB_RETURN
7558  **/
7559 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7560 {
7561         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7562         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7563         int length;
7564
7565         ENTER;
7566         ipr_scsi_bus_speed_limit(ioa_cfg);
7567         ipr_check_term_power(ioa_cfg, mode_pages);
7568         ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7569         length = mode_pages->hdr.length + 1;
7570         mode_pages->hdr.length = 0;
7571
7572         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7573                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7574                               length);
7575
7576         ipr_cmd->job_step = ipr_set_supported_devs;
7577         ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7578                                     struct ipr_resource_entry, queue);
7579         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7580
7581         LEAVE;
7582         return IPR_RC_JOB_RETURN;
7583 }
7584
7585 /**
7586  * ipr_build_mode_sense - Builds a mode sense command
7587  * @ipr_cmd:    ipr command struct
7588  * @res:                resource entry struct
7589  * @parm:               Byte 2 of mode sense command
7590  * @dma_addr:   DMA address of mode sense buffer
7591  * @xfer_len:   Size of DMA buffer
7592  *
7593  * Return value:
7594  *      none
7595  **/
7596 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7597                                  __be32 res_handle,
7598                                  u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7599 {
7600         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7601
7602         ioarcb->res_handle = res_handle;
7603         ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7604         ioarcb->cmd_pkt.cdb[2] = parm;
7605         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7606         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7607
7608         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7609 }
7610
7611 /**
7612  * ipr_reset_cmd_failed - Handle failure of IOA reset command
7613  * @ipr_cmd:    ipr command struct
7614  *
7615  * This function handles the failure of an IOA bringup command.
7616  *
7617  * Return value:
7618  *      IPR_RC_JOB_RETURN
7619  **/
7620 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7621 {
7622         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7623         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7624
7625         dev_err(&ioa_cfg->pdev->dev,
7626                 "0x%02X failed with IOASC: 0x%08X\n",
7627                 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7628
7629         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7630         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7631         return IPR_RC_JOB_RETURN;
7632 }
7633
7634 /**
7635  * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7636  * @ipr_cmd:    ipr command struct
7637  *
7638  * This function handles the failure of a Mode Sense to the IOAFP.
7639  * Some adapters do not handle all mode pages.
7640  *
7641  * Return value:
7642  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7643  **/
7644 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7645 {
7646         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7647         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7648
7649         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7650                 ipr_cmd->job_step = ipr_set_supported_devs;
7651                 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7652                                             struct ipr_resource_entry, queue);
7653                 return IPR_RC_JOB_CONTINUE;
7654         }
7655
7656         return ipr_reset_cmd_failed(ipr_cmd);
7657 }
7658
7659 /**
7660  * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7661  * @ipr_cmd:    ipr command struct
7662  *
7663  * This function send a Page 28 mode sense to the IOA to
7664  * retrieve SCSI bus attributes.
7665  *
7666  * Return value:
7667  *      IPR_RC_JOB_RETURN
7668  **/
7669 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7670 {
7671         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7672
7673         ENTER;
7674         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7675                              0x28, ioa_cfg->vpd_cbs_dma +
7676                              offsetof(struct ipr_misc_cbs, mode_pages),
7677                              sizeof(struct ipr_mode_pages));
7678
7679         ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7680         ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7681
7682         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7683
7684         LEAVE;
7685         return IPR_RC_JOB_RETURN;
7686 }
7687
7688 /**
7689  * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7690  * @ipr_cmd:    ipr command struct
7691  *
7692  * This function enables dual IOA RAID support if possible.
7693  *
7694  * Return value:
7695  *      IPR_RC_JOB_RETURN
7696  **/
7697 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7698 {
7699         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7700         struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7701         struct ipr_mode_page24 *mode_page;
7702         int length;
7703
7704         ENTER;
7705         mode_page = ipr_get_mode_page(mode_pages, 0x24,
7706                                       sizeof(struct ipr_mode_page24));
7707
7708         if (mode_page)
7709                 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7710
7711         length = mode_pages->hdr.length + 1;
7712         mode_pages->hdr.length = 0;
7713
7714         ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7715                               ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7716                               length);
7717
7718         ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7719         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7720
7721         LEAVE;
7722         return IPR_RC_JOB_RETURN;
7723 }
7724
7725 /**
7726  * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7727  * @ipr_cmd:    ipr command struct
7728  *
7729  * This function handles the failure of a Mode Sense to the IOAFP.
7730  * Some adapters do not handle all mode pages.
7731  *
7732  * Return value:
7733  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7734  **/
7735 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7736 {
7737         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7738
7739         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7740                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7741                 return IPR_RC_JOB_CONTINUE;
7742         }
7743
7744         return ipr_reset_cmd_failed(ipr_cmd);
7745 }
7746
7747 /**
7748  * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7749  * @ipr_cmd:    ipr command struct
7750  *
7751  * This function send a mode sense to the IOA to retrieve
7752  * the IOA Advanced Function Control mode page.
7753  *
7754  * Return value:
7755  *      IPR_RC_JOB_RETURN
7756  **/
7757 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7758 {
7759         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7760
7761         ENTER;
7762         ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7763                              0x24, ioa_cfg->vpd_cbs_dma +
7764                              offsetof(struct ipr_misc_cbs, mode_pages),
7765                              sizeof(struct ipr_mode_pages));
7766
7767         ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7768         ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7769
7770         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7771
7772         LEAVE;
7773         return IPR_RC_JOB_RETURN;
7774 }
7775
7776 /**
7777  * ipr_init_res_table - Initialize the resource table
7778  * @ipr_cmd:    ipr command struct
7779  *
7780  * This function looks through the existing resource table, comparing
7781  * it with the config table. This function will take care of old/new
7782  * devices and schedule adding/removing them from the mid-layer
7783  * as appropriate.
7784  *
7785  * Return value:
7786  *      IPR_RC_JOB_CONTINUE
7787  **/
7788 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7789 {
7790         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7791         struct ipr_resource_entry *res, *temp;
7792         struct ipr_config_table_entry_wrapper cfgtew;
7793         int entries, found, flag, i;
7794         LIST_HEAD(old_res);
7795
7796         ENTER;
7797         if (ioa_cfg->sis64)
7798                 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7799         else
7800                 flag = ioa_cfg->u.cfg_table->hdr.flags;
7801
7802         if (flag & IPR_UCODE_DOWNLOAD_REQ)
7803                 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7804
7805         list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7806                 list_move_tail(&res->queue, &old_res);
7807
7808         if (ioa_cfg->sis64)
7809                 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7810         else
7811                 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7812
7813         for (i = 0; i < entries; i++) {
7814                 if (ioa_cfg->sis64)
7815                         cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7816                 else
7817                         cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7818                 found = 0;
7819
7820                 list_for_each_entry_safe(res, temp, &old_res, queue) {
7821                         if (ipr_is_same_device(res, &cfgtew)) {
7822                                 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7823                                 found = 1;
7824                                 break;
7825                         }
7826                 }
7827
7828                 if (!found) {
7829                         if (list_empty(&ioa_cfg->free_res_q)) {
7830                                 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7831                                 break;
7832                         }
7833
7834                         found = 1;
7835                         res = list_entry(ioa_cfg->free_res_q.next,
7836                                          struct ipr_resource_entry, queue);
7837                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7838                         ipr_init_res_entry(res, &cfgtew);
7839                         res->add_to_ml = 1;
7840                 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7841                         res->sdev->allow_restart = 1;
7842
7843                 if (found)
7844                         ipr_update_res_entry(res, &cfgtew);
7845         }
7846
7847         list_for_each_entry_safe(res, temp, &old_res, queue) {
7848                 if (res->sdev) {
7849                         res->del_from_ml = 1;
7850                         res->res_handle = IPR_INVALID_RES_HANDLE;
7851                         list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7852                 }
7853         }
7854
7855         list_for_each_entry_safe(res, temp, &old_res, queue) {
7856                 ipr_clear_res_target(res);
7857                 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7858         }
7859
7860         if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7861                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7862         else
7863                 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7864
7865         LEAVE;
7866         return IPR_RC_JOB_CONTINUE;
7867 }
7868
7869 /**
7870  * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7871  * @ipr_cmd:    ipr command struct
7872  *
7873  * This function sends a Query IOA Configuration command
7874  * to the adapter to retrieve the IOA configuration table.
7875  *
7876  * Return value:
7877  *      IPR_RC_JOB_RETURN
7878  **/
7879 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7880 {
7881         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7882         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7883         struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7884         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7885
7886         ENTER;
7887         if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7888                 ioa_cfg->dual_raid = 1;
7889         dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7890                  ucode_vpd->major_release, ucode_vpd->card_type,
7891                  ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7892         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7893         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7894
7895         ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7896         ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7897         ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7898         ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7899
7900         ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7901                        IPR_IOADL_FLAGS_READ_LAST);
7902
7903         ipr_cmd->job_step = ipr_init_res_table;
7904
7905         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7906
7907         LEAVE;
7908         return IPR_RC_JOB_RETURN;
7909 }
7910
7911 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7912 {
7913         u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7914
7915         if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7916                 return IPR_RC_JOB_CONTINUE;
7917
7918         return ipr_reset_cmd_failed(ipr_cmd);
7919 }
7920
7921 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7922                                          __be32 res_handle, u8 sa_code)
7923 {
7924         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7925
7926         ioarcb->res_handle = res_handle;
7927         ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7928         ioarcb->cmd_pkt.cdb[1] = sa_code;
7929         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7930 }
7931
7932 /**
7933  * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7934  * action
7935  *
7936  * Return value:
7937  *      none
7938  **/
7939 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7940 {
7941         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7942         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7943         struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7944
7945         ENTER;
7946
7947         ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7948
7949         if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7950                 ipr_build_ioa_service_action(ipr_cmd,
7951                                              cpu_to_be32(IPR_IOA_RES_HANDLE),
7952                                              IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7953
7954                 ioarcb->cmd_pkt.cdb[2] = 0x40;
7955
7956                 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7957                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7958                            IPR_SET_SUP_DEVICE_TIMEOUT);
7959
7960                 LEAVE;
7961                 return IPR_RC_JOB_RETURN;
7962         }
7963
7964         LEAVE;
7965         return IPR_RC_JOB_CONTINUE;
7966 }
7967
7968 /**
7969  * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7970  * @ipr_cmd:    ipr command struct
7971  *
7972  * This utility function sends an inquiry to the adapter.
7973  *
7974  * Return value:
7975  *      none
7976  **/
7977 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7978                               dma_addr_t dma_addr, u8 xfer_len)
7979 {
7980         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7981
7982         ENTER;
7983         ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7984         ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7985
7986         ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7987         ioarcb->cmd_pkt.cdb[1] = flags;
7988         ioarcb->cmd_pkt.cdb[2] = page;
7989         ioarcb->cmd_pkt.cdb[4] = xfer_len;
7990
7991         ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7992
7993         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7994         LEAVE;
7995 }
7996
7997 /**
7998  * ipr_inquiry_page_supported - Is the given inquiry page supported
7999  * @page0:              inquiry page 0 buffer
8000  * @page:               page code.
8001  *
8002  * This function determines if the specified inquiry page is supported.
8003  *
8004  * Return value:
8005  *      1 if page is supported / 0 if not
8006  **/
8007 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
8008 {
8009         int i;
8010
8011         for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
8012                 if (page0->page[i] == page)
8013                         return 1;
8014
8015         return 0;
8016 }
8017
8018 /**
8019  * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
8020  * @ipr_cmd:    ipr command struct
8021  *
8022  * This function sends a Page 0xC4 inquiry to the adapter
8023  * to retrieve software VPD information.
8024  *
8025  * Return value:
8026  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8027  **/
8028 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
8029 {
8030         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8031         struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8032         struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
8033
8034         ENTER;
8035         ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
8036         memset(pageC4, 0, sizeof(*pageC4));
8037
8038         if (ipr_inquiry_page_supported(page0, 0xC4)) {
8039                 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
8040                                   (ioa_cfg->vpd_cbs_dma
8041                                    + offsetof(struct ipr_misc_cbs,
8042                                               pageC4_data)),
8043                                   sizeof(struct ipr_inquiry_pageC4));
8044                 return IPR_RC_JOB_RETURN;
8045         }
8046
8047         LEAVE;
8048         return IPR_RC_JOB_CONTINUE;
8049 }
8050
8051 /**
8052  * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
8053  * @ipr_cmd:    ipr command struct
8054  *
8055  * This function sends a Page 0xD0 inquiry to the adapter
8056  * to retrieve adapter capabilities.
8057  *
8058  * Return value:
8059  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8060  **/
8061 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
8062 {
8063         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8064         struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8065         struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
8066
8067         ENTER;
8068         ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
8069         memset(cap, 0, sizeof(*cap));
8070
8071         if (ipr_inquiry_page_supported(page0, 0xD0)) {
8072                 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
8073                                   ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
8074                                   sizeof(struct ipr_inquiry_cap));
8075                 return IPR_RC_JOB_RETURN;
8076         }
8077
8078         LEAVE;
8079         return IPR_RC_JOB_CONTINUE;
8080 }
8081
8082 /**
8083  * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
8084  * @ipr_cmd:    ipr command struct
8085  *
8086  * This function sends a Page 3 inquiry to the adapter
8087  * to retrieve software VPD information.
8088  *
8089  * Return value:
8090  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8091  **/
8092 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
8093 {
8094         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8095
8096         ENTER;
8097
8098         ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
8099
8100         ipr_ioafp_inquiry(ipr_cmd, 1, 3,
8101                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
8102                           sizeof(struct ipr_inquiry_page3));
8103
8104         LEAVE;
8105         return IPR_RC_JOB_RETURN;
8106 }
8107
8108 /**
8109  * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
8110  * @ipr_cmd:    ipr command struct
8111  *
8112  * This function sends a Page 0 inquiry to the adapter
8113  * to retrieve supported inquiry pages.
8114  *
8115  * Return value:
8116  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8117  **/
8118 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
8119 {
8120         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8121         char type[5];
8122
8123         ENTER;
8124
8125         /* Grab the type out of the VPD and store it away */
8126         memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
8127         type[4] = '\0';
8128         ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
8129
8130         if (ipr_invalid_adapter(ioa_cfg)) {
8131                 dev_err(&ioa_cfg->pdev->dev,
8132                         "Adapter not supported in this hardware configuration.\n");
8133
8134                 if (!ipr_testmode) {
8135                         ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
8136                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8137                         list_add_tail(&ipr_cmd->queue,
8138                                         &ioa_cfg->hrrq->hrrq_free_q);
8139                         return IPR_RC_JOB_RETURN;
8140                 }
8141         }
8142
8143         ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
8144
8145         ipr_ioafp_inquiry(ipr_cmd, 1, 0,
8146                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
8147                           sizeof(struct ipr_inquiry_page0));
8148
8149         LEAVE;
8150         return IPR_RC_JOB_RETURN;
8151 }
8152
8153 /**
8154  * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
8155  * @ipr_cmd:    ipr command struct
8156  *
8157  * This function sends a standard inquiry to the adapter.
8158  *
8159  * Return value:
8160  *      IPR_RC_JOB_RETURN
8161  **/
8162 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
8163 {
8164         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8165
8166         ENTER;
8167         ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
8168
8169         ipr_ioafp_inquiry(ipr_cmd, 0, 0,
8170                           ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
8171                           sizeof(struct ipr_ioa_vpd));
8172
8173         LEAVE;
8174         return IPR_RC_JOB_RETURN;
8175 }
8176
8177 /**
8178  * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
8179  * @ipr_cmd:    ipr command struct
8180  *
8181  * This function send an Identify Host Request Response Queue
8182  * command to establish the HRRQ with the adapter.
8183  *
8184  * Return value:
8185  *      IPR_RC_JOB_RETURN
8186  **/
8187 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
8188 {
8189         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8190         struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
8191         struct ipr_hrr_queue *hrrq;
8192
8193         ENTER;
8194         ipr_cmd->job_step = ipr_ioafp_std_inquiry;
8195         if (ioa_cfg->identify_hrrq_index == 0)
8196                 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
8197
8198         if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
8199                 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
8200
8201                 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
8202                 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8203
8204                 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8205                 if (ioa_cfg->sis64)
8206                         ioarcb->cmd_pkt.cdb[1] = 0x1;
8207
8208                 if (ioa_cfg->nvectors == 1)
8209                         ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
8210                 else
8211                         ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
8212
8213                 ioarcb->cmd_pkt.cdb[2] =
8214                         ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
8215                 ioarcb->cmd_pkt.cdb[3] =
8216                         ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
8217                 ioarcb->cmd_pkt.cdb[4] =
8218                         ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
8219                 ioarcb->cmd_pkt.cdb[5] =
8220                         ((u64) hrrq->host_rrq_dma) & 0xff;
8221                 ioarcb->cmd_pkt.cdb[7] =
8222                         ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
8223                 ioarcb->cmd_pkt.cdb[8] =
8224                         (sizeof(u32) * hrrq->size) & 0xff;
8225
8226                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8227                         ioarcb->cmd_pkt.cdb[9] =
8228                                         ioa_cfg->identify_hrrq_index;
8229
8230                 if (ioa_cfg->sis64) {
8231                         ioarcb->cmd_pkt.cdb[10] =
8232                                 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8233                         ioarcb->cmd_pkt.cdb[11] =
8234                                 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8235                         ioarcb->cmd_pkt.cdb[12] =
8236                                 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8237                         ioarcb->cmd_pkt.cdb[13] =
8238                                 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8239                 }
8240
8241                 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8242                         ioarcb->cmd_pkt.cdb[14] =
8243                                         ioa_cfg->identify_hrrq_index;
8244
8245                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8246                            IPR_INTERNAL_TIMEOUT);
8247
8248                 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8249                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8250
8251                 LEAVE;
8252                 return IPR_RC_JOB_RETURN;
8253         }
8254
8255         LEAVE;
8256         return IPR_RC_JOB_CONTINUE;
8257 }
8258
8259 /**
8260  * ipr_reset_timer_done - Adapter reset timer function
8261  * @ipr_cmd:    ipr command struct
8262  *
8263  * Description: This function is used in adapter reset processing
8264  * for timing events. If the reset_cmd pointer in the IOA
8265  * config struct is not this adapter's we are doing nested
8266  * resets and fail_all_ops will take care of freeing the
8267  * command block.
8268  *
8269  * Return value:
8270  *      none
8271  **/
8272 static void ipr_reset_timer_done(struct timer_list *t)
8273 {
8274         struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
8275         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8276         unsigned long lock_flags = 0;
8277
8278         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8279
8280         if (ioa_cfg->reset_cmd == ipr_cmd) {
8281                 list_del(&ipr_cmd->queue);
8282                 ipr_cmd->done(ipr_cmd);
8283         }
8284
8285         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8286 }
8287
8288 /**
8289  * ipr_reset_start_timer - Start a timer for adapter reset job
8290  * @ipr_cmd:    ipr command struct
8291  * @timeout:    timeout value
8292  *
8293  * Description: This function is used in adapter reset processing
8294  * for timing events. If the reset_cmd pointer in the IOA
8295  * config struct is not this adapter's we are doing nested
8296  * resets and fail_all_ops will take care of freeing the
8297  * command block.
8298  *
8299  * Return value:
8300  *      none
8301  **/
8302 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8303                                   unsigned long timeout)
8304 {
8305
8306         ENTER;
8307         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8308         ipr_cmd->done = ipr_reset_ioa_job;
8309
8310         ipr_cmd->timer.expires = jiffies + timeout;
8311         ipr_cmd->timer.function = ipr_reset_timer_done;
8312         add_timer(&ipr_cmd->timer);
8313 }
8314
8315 /**
8316  * ipr_init_ioa_mem - Initialize ioa_cfg control block
8317  * @ioa_cfg:    ioa cfg struct
8318  *
8319  * Return value:
8320  *      nothing
8321  **/
8322 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8323 {
8324         struct ipr_hrr_queue *hrrq;
8325
8326         for_each_hrrq(hrrq, ioa_cfg) {
8327                 spin_lock(&hrrq->_lock);
8328                 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8329
8330                 /* Initialize Host RRQ pointers */
8331                 hrrq->hrrq_start = hrrq->host_rrq;
8332                 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8333                 hrrq->hrrq_curr = hrrq->hrrq_start;
8334                 hrrq->toggle_bit = 1;
8335                 spin_unlock(&hrrq->_lock);
8336         }
8337         wmb();
8338
8339         ioa_cfg->identify_hrrq_index = 0;
8340         if (ioa_cfg->hrrq_num == 1)
8341                 atomic_set(&ioa_cfg->hrrq_index, 0);
8342         else
8343                 atomic_set(&ioa_cfg->hrrq_index, 1);
8344
8345         /* Zero out config table */
8346         memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8347 }
8348
8349 /**
8350  * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8351  * @ipr_cmd:    ipr command struct
8352  *
8353  * Return value:
8354  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8355  **/
8356 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8357 {
8358         unsigned long stage, stage_time;
8359         u32 feedback;
8360         volatile u32 int_reg;
8361         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8362         u64 maskval = 0;
8363
8364         feedback = readl(ioa_cfg->regs.init_feedback_reg);
8365         stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8366         stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8367
8368         ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8369
8370         /* sanity check the stage_time value */
8371         if (stage_time == 0)
8372                 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8373         else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8374                 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8375         else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8376                 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8377
8378         if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8379                 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8380                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8381                 stage_time = ioa_cfg->transop_timeout;
8382                 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8383         } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8384                 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8385                 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8386                         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8387                         maskval = IPR_PCII_IPL_STAGE_CHANGE;
8388                         maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8389                         writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8390                         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8391                         return IPR_RC_JOB_CONTINUE;
8392                 }
8393         }
8394
8395         ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8396         ipr_cmd->timer.function = ipr_oper_timeout;
8397         ipr_cmd->done = ipr_reset_ioa_job;
8398         add_timer(&ipr_cmd->timer);
8399
8400         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8401
8402         return IPR_RC_JOB_RETURN;
8403 }
8404
8405 /**
8406  * ipr_reset_enable_ioa - Enable the IOA following a reset.
8407  * @ipr_cmd:    ipr command struct
8408  *
8409  * This function reinitializes some control blocks and
8410  * enables destructive diagnostics on the adapter.
8411  *
8412  * Return value:
8413  *      IPR_RC_JOB_RETURN
8414  **/
8415 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8416 {
8417         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8418         volatile u32 int_reg;
8419         volatile u64 maskval;
8420         int i;
8421
8422         ENTER;
8423         ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8424         ipr_init_ioa_mem(ioa_cfg);
8425
8426         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8427                 spin_lock(&ioa_cfg->hrrq[i]._lock);
8428                 ioa_cfg->hrrq[i].allow_interrupts = 1;
8429                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8430         }
8431         wmb();
8432         if (ioa_cfg->sis64) {
8433                 /* Set the adapter to the correct endian mode. */
8434                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8435                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8436         }
8437
8438         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8439
8440         if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8441                 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8442                        ioa_cfg->regs.clr_interrupt_mask_reg32);
8443                 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8444                 return IPR_RC_JOB_CONTINUE;
8445         }
8446
8447         /* Enable destructive diagnostics on IOA */
8448         writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8449
8450         if (ioa_cfg->sis64) {
8451                 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8452                 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8453                 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8454         } else
8455                 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8456
8457         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8458
8459         dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8460
8461         if (ioa_cfg->sis64) {
8462                 ipr_cmd->job_step = ipr_reset_next_stage;
8463                 return IPR_RC_JOB_CONTINUE;
8464         }
8465
8466         ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8467         ipr_cmd->timer.function = ipr_oper_timeout;
8468         ipr_cmd->done = ipr_reset_ioa_job;
8469         add_timer(&ipr_cmd->timer);
8470         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8471
8472         LEAVE;
8473         return IPR_RC_JOB_RETURN;
8474 }
8475
8476 /**
8477  * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8478  * @ipr_cmd:    ipr command struct
8479  *
8480  * This function is invoked when an adapter dump has run out
8481  * of processing time.
8482  *
8483  * Return value:
8484  *      IPR_RC_JOB_CONTINUE
8485  **/
8486 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8487 {
8488         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8489
8490         if (ioa_cfg->sdt_state == GET_DUMP)
8491                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8492         else if (ioa_cfg->sdt_state == READ_DUMP)
8493                 ioa_cfg->sdt_state = ABORT_DUMP;
8494
8495         ioa_cfg->dump_timeout = 1;
8496         ipr_cmd->job_step = ipr_reset_alert;
8497
8498         return IPR_RC_JOB_CONTINUE;
8499 }
8500
8501 /**
8502  * ipr_unit_check_no_data - Log a unit check/no data error log
8503  * @ioa_cfg:            ioa config struct
8504  *
8505  * Logs an error indicating the adapter unit checked, but for some
8506  * reason, we were unable to fetch the unit check buffer.
8507  *
8508  * Return value:
8509  *      nothing
8510  **/
8511 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8512 {
8513         ioa_cfg->errors_logged++;
8514         dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8515 }
8516
8517 /**
8518  * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8519  * @ioa_cfg:            ioa config struct
8520  *
8521  * Fetches the unit check buffer from the adapter by clocking the data
8522  * through the mailbox register.
8523  *
8524  * Return value:
8525  *      nothing
8526  **/
8527 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8528 {
8529         unsigned long mailbox;
8530         struct ipr_hostrcb *hostrcb;
8531         struct ipr_uc_sdt sdt;
8532         int rc, length;
8533         u32 ioasc;
8534
8535         mailbox = readl(ioa_cfg->ioa_mailbox);
8536
8537         if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8538                 ipr_unit_check_no_data(ioa_cfg);
8539                 return;
8540         }
8541
8542         memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8543         rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8544                                         (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8545
8546         if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8547             ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8548             (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8549                 ipr_unit_check_no_data(ioa_cfg);
8550                 return;
8551         }
8552
8553         /* Find length of the first sdt entry (UC buffer) */
8554         if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8555                 length = be32_to_cpu(sdt.entry[0].end_token);
8556         else
8557                 length = (be32_to_cpu(sdt.entry[0].end_token) -
8558                           be32_to_cpu(sdt.entry[0].start_token)) &
8559                           IPR_FMT2_MBX_ADDR_MASK;
8560
8561         hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8562                              struct ipr_hostrcb, queue);
8563         list_del_init(&hostrcb->queue);
8564         memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8565
8566         rc = ipr_get_ldump_data_section(ioa_cfg,
8567                                         be32_to_cpu(sdt.entry[0].start_token),
8568                                         (__be32 *)&hostrcb->hcam,
8569                                         min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8570
8571         if (!rc) {
8572                 ipr_handle_log_data(ioa_cfg, hostrcb);
8573                 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8574                 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8575                     ioa_cfg->sdt_state == GET_DUMP)
8576                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8577         } else
8578                 ipr_unit_check_no_data(ioa_cfg);
8579
8580         list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8581 }
8582
8583 /**
8584  * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8585  * @ipr_cmd:    ipr command struct
8586  *
8587  * Description: This function will call to get the unit check buffer.
8588  *
8589  * Return value:
8590  *      IPR_RC_JOB_RETURN
8591  **/
8592 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8593 {
8594         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8595
8596         ENTER;
8597         ioa_cfg->ioa_unit_checked = 0;
8598         ipr_get_unit_check_buffer(ioa_cfg);
8599         ipr_cmd->job_step = ipr_reset_alert;
8600         ipr_reset_start_timer(ipr_cmd, 0);
8601
8602         LEAVE;
8603         return IPR_RC_JOB_RETURN;
8604 }
8605
8606 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8607 {
8608         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8609
8610         ENTER;
8611
8612         if (ioa_cfg->sdt_state != GET_DUMP)
8613                 return IPR_RC_JOB_RETURN;
8614
8615         if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8616             (readl(ioa_cfg->regs.sense_interrupt_reg) &
8617              IPR_PCII_MAILBOX_STABLE)) {
8618
8619                 if (!ipr_cmd->u.time_left)
8620                         dev_err(&ioa_cfg->pdev->dev,
8621                                 "Timed out waiting for Mailbox register.\n");
8622
8623                 ioa_cfg->sdt_state = READ_DUMP;
8624                 ioa_cfg->dump_timeout = 0;
8625                 if (ioa_cfg->sis64)
8626                         ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8627                 else
8628                         ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8629                 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8630                 schedule_work(&ioa_cfg->work_q);
8631
8632         } else {
8633                 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8634                 ipr_reset_start_timer(ipr_cmd,
8635                                       IPR_CHECK_FOR_RESET_TIMEOUT);
8636         }
8637
8638         LEAVE;
8639         return IPR_RC_JOB_RETURN;
8640 }
8641
8642 /**
8643  * ipr_reset_restore_cfg_space - Restore PCI config space.
8644  * @ipr_cmd:    ipr command struct
8645  *
8646  * Description: This function restores the saved PCI config space of
8647  * the adapter, fails all outstanding ops back to the callers, and
8648  * fetches the dump/unit check if applicable to this reset.
8649  *
8650  * Return value:
8651  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8652  **/
8653 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8654 {
8655         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8656         u32 int_reg;
8657
8658         ENTER;
8659         ioa_cfg->pdev->state_saved = true;
8660         pci_restore_state(ioa_cfg->pdev);
8661
8662         if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8663                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8664                 return IPR_RC_JOB_CONTINUE;
8665         }
8666
8667         ipr_fail_all_ops(ioa_cfg);
8668
8669         if (ioa_cfg->sis64) {
8670                 /* Set the adapter to the correct endian mode. */
8671                 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8672                 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8673         }
8674
8675         if (ioa_cfg->ioa_unit_checked) {
8676                 if (ioa_cfg->sis64) {
8677                         ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8678                         ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8679                         return IPR_RC_JOB_RETURN;
8680                 } else {
8681                         ioa_cfg->ioa_unit_checked = 0;
8682                         ipr_get_unit_check_buffer(ioa_cfg);
8683                         ipr_cmd->job_step = ipr_reset_alert;
8684                         ipr_reset_start_timer(ipr_cmd, 0);
8685                         return IPR_RC_JOB_RETURN;
8686                 }
8687         }
8688
8689         if (ioa_cfg->in_ioa_bringdown) {
8690                 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8691         } else if (ioa_cfg->sdt_state == GET_DUMP) {
8692                 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8693                 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8694         } else {
8695                 ipr_cmd->job_step = ipr_reset_enable_ioa;
8696         }
8697
8698         LEAVE;
8699         return IPR_RC_JOB_CONTINUE;
8700 }
8701
8702 /**
8703  * ipr_reset_bist_done - BIST has completed on the adapter.
8704  * @ipr_cmd:    ipr command struct
8705  *
8706  * Description: Unblock config space and resume the reset process.
8707  *
8708  * Return value:
8709  *      IPR_RC_JOB_CONTINUE
8710  **/
8711 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8712 {
8713         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8714
8715         ENTER;
8716         if (ioa_cfg->cfg_locked)
8717                 pci_cfg_access_unlock(ioa_cfg->pdev);
8718         ioa_cfg->cfg_locked = 0;
8719         ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8720         LEAVE;
8721         return IPR_RC_JOB_CONTINUE;
8722 }
8723
8724 /**
8725  * ipr_reset_start_bist - Run BIST on the adapter.
8726  * @ipr_cmd:    ipr command struct
8727  *
8728  * Description: This function runs BIST on the adapter, then delays 2 seconds.
8729  *
8730  * Return value:
8731  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8732  **/
8733 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8734 {
8735         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8736         int rc = PCIBIOS_SUCCESSFUL;
8737
8738         ENTER;
8739         if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8740                 writel(IPR_UPROCI_SIS64_START_BIST,
8741                        ioa_cfg->regs.set_uproc_interrupt_reg32);
8742         else
8743                 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8744
8745         if (rc == PCIBIOS_SUCCESSFUL) {
8746                 ipr_cmd->job_step = ipr_reset_bist_done;
8747                 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8748                 rc = IPR_RC_JOB_RETURN;
8749         } else {
8750                 if (ioa_cfg->cfg_locked)
8751                         pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8752                 ioa_cfg->cfg_locked = 0;
8753                 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8754                 rc = IPR_RC_JOB_CONTINUE;
8755         }
8756
8757         LEAVE;
8758         return rc;
8759 }
8760
8761 /**
8762  * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8763  * @ipr_cmd:    ipr command struct
8764  *
8765  * Description: This clears PCI reset to the adapter and delays two seconds.
8766  *
8767  * Return value:
8768  *      IPR_RC_JOB_RETURN
8769  **/
8770 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8771 {
8772         ENTER;
8773         ipr_cmd->job_step = ipr_reset_bist_done;
8774         ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8775         LEAVE;
8776         return IPR_RC_JOB_RETURN;
8777 }
8778
8779 /**
8780  * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8781  * @work:       work struct
8782  *
8783  * Description: This pulses warm reset to a slot.
8784  *
8785  **/
8786 static void ipr_reset_reset_work(struct work_struct *work)
8787 {
8788         struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8789         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8790         struct pci_dev *pdev = ioa_cfg->pdev;
8791         unsigned long lock_flags = 0;
8792
8793         ENTER;
8794         pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8795         msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8796         pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8797
8798         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8799         if (ioa_cfg->reset_cmd == ipr_cmd)
8800                 ipr_reset_ioa_job(ipr_cmd);
8801         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8802         LEAVE;
8803 }
8804
8805 /**
8806  * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8807  * @ipr_cmd:    ipr command struct
8808  *
8809  * Description: This asserts PCI reset to the adapter.
8810  *
8811  * Return value:
8812  *      IPR_RC_JOB_RETURN
8813  **/
8814 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8815 {
8816         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8817
8818         ENTER;
8819         INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8820         queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8821         ipr_cmd->job_step = ipr_reset_slot_reset_done;
8822         LEAVE;
8823         return IPR_RC_JOB_RETURN;
8824 }
8825
8826 /**
8827  * ipr_reset_block_config_access_wait - Wait for permission to block config access
8828  * @ipr_cmd:    ipr command struct
8829  *
8830  * Description: This attempts to block config access to the IOA.
8831  *
8832  * Return value:
8833  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8834  **/
8835 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8836 {
8837         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8838         int rc = IPR_RC_JOB_CONTINUE;
8839
8840         if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8841                 ioa_cfg->cfg_locked = 1;
8842                 ipr_cmd->job_step = ioa_cfg->reset;
8843         } else {
8844                 if (ipr_cmd->u.time_left) {
8845                         rc = IPR_RC_JOB_RETURN;
8846                         ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8847                         ipr_reset_start_timer(ipr_cmd,
8848                                               IPR_CHECK_FOR_RESET_TIMEOUT);
8849                 } else {
8850                         ipr_cmd->job_step = ioa_cfg->reset;
8851                         dev_err(&ioa_cfg->pdev->dev,
8852                                 "Timed out waiting to lock config access. Resetting anyway.\n");
8853                 }
8854         }
8855
8856         return rc;
8857 }
8858
8859 /**
8860  * ipr_reset_block_config_access - Block config access to the IOA
8861  * @ipr_cmd:    ipr command struct
8862  *
8863  * Description: This attempts to block config access to the IOA
8864  *
8865  * Return value:
8866  *      IPR_RC_JOB_CONTINUE
8867  **/
8868 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8869 {
8870         ipr_cmd->ioa_cfg->cfg_locked = 0;
8871         ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8872         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8873         return IPR_RC_JOB_CONTINUE;
8874 }
8875
8876 /**
8877  * ipr_reset_allowed - Query whether or not IOA can be reset
8878  * @ioa_cfg:    ioa config struct
8879  *
8880  * Return value:
8881  *      0 if reset not allowed / non-zero if reset is allowed
8882  **/
8883 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8884 {
8885         volatile u32 temp_reg;
8886
8887         temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8888         return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8889 }
8890
8891 /**
8892  * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8893  * @ipr_cmd:    ipr command struct
8894  *
8895  * Description: This function waits for adapter permission to run BIST,
8896  * then runs BIST. If the adapter does not give permission after a
8897  * reasonable time, we will reset the adapter anyway. The impact of
8898  * resetting the adapter without warning the adapter is the risk of
8899  * losing the persistent error log on the adapter. If the adapter is
8900  * reset while it is writing to the flash on the adapter, the flash
8901  * segment will have bad ECC and be zeroed.
8902  *
8903  * Return value:
8904  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8905  **/
8906 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8907 {
8908         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8909         int rc = IPR_RC_JOB_RETURN;
8910
8911         if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8912                 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8913                 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8914         } else {
8915                 ipr_cmd->job_step = ipr_reset_block_config_access;
8916                 rc = IPR_RC_JOB_CONTINUE;
8917         }
8918
8919         return rc;
8920 }
8921
8922 /**
8923  * ipr_reset_alert - Alert the adapter of a pending reset
8924  * @ipr_cmd:    ipr command struct
8925  *
8926  * Description: This function alerts the adapter that it will be reset.
8927  * If memory space is not currently enabled, proceed directly
8928  * to running BIST on the adapter. The timer must always be started
8929  * so we guarantee we do not run BIST from ipr_isr.
8930  *
8931  * Return value:
8932  *      IPR_RC_JOB_RETURN
8933  **/
8934 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8935 {
8936         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8937         u16 cmd_reg;
8938         int rc;
8939
8940         ENTER;
8941         rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8942
8943         if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8944                 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8945                 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8946                 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8947         } else {
8948                 ipr_cmd->job_step = ipr_reset_block_config_access;
8949         }
8950
8951         ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8952         ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8953
8954         LEAVE;
8955         return IPR_RC_JOB_RETURN;
8956 }
8957
8958 /**
8959  * ipr_reset_quiesce_done - Complete IOA disconnect
8960  * @ipr_cmd:    ipr command struct
8961  *
8962  * Description: Freeze the adapter to complete quiesce processing
8963  *
8964  * Return value:
8965  *      IPR_RC_JOB_CONTINUE
8966  **/
8967 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8968 {
8969         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8970
8971         ENTER;
8972         ipr_cmd->job_step = ipr_ioa_bringdown_done;
8973         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8974         LEAVE;
8975         return IPR_RC_JOB_CONTINUE;
8976 }
8977
8978 /**
8979  * ipr_reset_cancel_hcam_done - Check for outstanding commands
8980  * @ipr_cmd:    ipr command struct
8981  *
8982  * Description: Ensure nothing is outstanding to the IOA and
8983  *                      proceed with IOA disconnect. Otherwise reset the IOA.
8984  *
8985  * Return value:
8986  *      IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8987  **/
8988 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8989 {
8990         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8991         struct ipr_cmnd *loop_cmd;
8992         struct ipr_hrr_queue *hrrq;
8993         int rc = IPR_RC_JOB_CONTINUE;
8994         int count = 0;
8995
8996         ENTER;
8997         ipr_cmd->job_step = ipr_reset_quiesce_done;
8998
8999         for_each_hrrq(hrrq, ioa_cfg) {
9000                 spin_lock(&hrrq->_lock);
9001                 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
9002                         count++;
9003                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9004                         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9005                         rc = IPR_RC_JOB_RETURN;
9006                         break;
9007                 }
9008                 spin_unlock(&hrrq->_lock);
9009
9010                 if (count)
9011                         break;
9012         }
9013
9014         LEAVE;
9015         return rc;
9016 }
9017
9018 /**
9019  * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
9020  * @ipr_cmd:    ipr command struct
9021  *
9022  * Description: Cancel any oustanding HCAMs to the IOA.
9023  *
9024  * Return value:
9025  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9026  **/
9027 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
9028 {
9029         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9030         int rc = IPR_RC_JOB_CONTINUE;
9031         struct ipr_cmd_pkt *cmd_pkt;
9032         struct ipr_cmnd *hcam_cmd;
9033         struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
9034
9035         ENTER;
9036         ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
9037
9038         if (!hrrq->ioa_is_dead) {
9039                 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
9040                         list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
9041                                 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
9042                                         continue;
9043
9044                                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9045                                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9046                                 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
9047                                 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
9048                                 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
9049                                 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
9050                                 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
9051                                 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
9052                                 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
9053                                 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
9054                                 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
9055                                 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
9056                                 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
9057                                 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
9058
9059                                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9060                                            IPR_CANCEL_TIMEOUT);
9061
9062                                 rc = IPR_RC_JOB_RETURN;
9063                                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9064                                 break;
9065                         }
9066                 }
9067         } else
9068                 ipr_cmd->job_step = ipr_reset_alert;
9069
9070         LEAVE;
9071         return rc;
9072 }
9073
9074 /**
9075  * ipr_reset_ucode_download_done - Microcode download completion
9076  * @ipr_cmd:    ipr command struct
9077  *
9078  * Description: This function unmaps the microcode download buffer.
9079  *
9080  * Return value:
9081  *      IPR_RC_JOB_CONTINUE
9082  **/
9083 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
9084 {
9085         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9086         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9087
9088         dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
9089                      sglist->num_sg, DMA_TO_DEVICE);
9090
9091         ipr_cmd->job_step = ipr_reset_alert;
9092         return IPR_RC_JOB_CONTINUE;
9093 }
9094
9095 /**
9096  * ipr_reset_ucode_download - Download microcode to the adapter
9097  * @ipr_cmd:    ipr command struct
9098  *
9099  * Description: This function checks to see if it there is microcode
9100  * to download to the adapter. If there is, a download is performed.
9101  *
9102  * Return value:
9103  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9104  **/
9105 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
9106 {
9107         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9108         struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9109
9110         ENTER;
9111         ipr_cmd->job_step = ipr_reset_alert;
9112
9113         if (!sglist)
9114                 return IPR_RC_JOB_CONTINUE;
9115
9116         ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9117         ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
9118         ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
9119         ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
9120         ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
9121         ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
9122         ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
9123
9124         if (ioa_cfg->sis64)
9125                 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
9126         else
9127                 ipr_build_ucode_ioadl(ipr_cmd, sglist);
9128         ipr_cmd->job_step = ipr_reset_ucode_download_done;
9129
9130         ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9131                    IPR_WRITE_BUFFER_TIMEOUT);
9132
9133         LEAVE;
9134         return IPR_RC_JOB_RETURN;
9135 }
9136
9137 /**
9138  * ipr_reset_shutdown_ioa - Shutdown the adapter
9139  * @ipr_cmd:    ipr command struct
9140  *
9141  * Description: This function issues an adapter shutdown of the
9142  * specified type to the specified adapter as part of the
9143  * adapter reset job.
9144  *
9145  * Return value:
9146  *      IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9147  **/
9148 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
9149 {
9150         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9151         enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
9152         unsigned long timeout;
9153         int rc = IPR_RC_JOB_CONTINUE;
9154
9155         ENTER;
9156         if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
9157                 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9158         else if (shutdown_type != IPR_SHUTDOWN_NONE &&
9159                         !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
9160                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9161                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9162                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9163                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
9164
9165                 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
9166                         timeout = IPR_SHUTDOWN_TIMEOUT;
9167                 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
9168                         timeout = IPR_INTERNAL_TIMEOUT;
9169                 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
9170                         timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
9171                 else
9172                         timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
9173
9174                 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
9175
9176                 rc = IPR_RC_JOB_RETURN;
9177                 ipr_cmd->job_step = ipr_reset_ucode_download;
9178         } else
9179                 ipr_cmd->job_step = ipr_reset_alert;
9180
9181         LEAVE;
9182         return rc;
9183 }
9184
9185 /**
9186  * ipr_reset_ioa_job - Adapter reset job
9187  * @ipr_cmd:    ipr command struct
9188  *
9189  * Description: This function is the job router for the adapter reset job.
9190  *
9191  * Return value:
9192  *      none
9193  **/
9194 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
9195 {
9196         u32 rc, ioasc;
9197         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9198
9199         do {
9200                 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
9201
9202                 if (ioa_cfg->reset_cmd != ipr_cmd) {
9203                         /*
9204                          * We are doing nested adapter resets and this is
9205                          * not the current reset job.
9206                          */
9207                         list_add_tail(&ipr_cmd->queue,
9208                                         &ipr_cmd->hrrq->hrrq_free_q);
9209                         return;
9210                 }
9211
9212                 if (IPR_IOASC_SENSE_KEY(ioasc)) {
9213                         rc = ipr_cmd->job_step_failed(ipr_cmd);
9214                         if (rc == IPR_RC_JOB_RETURN)
9215                                 return;
9216                 }
9217
9218                 ipr_reinit_ipr_cmnd(ipr_cmd);
9219                 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
9220                 rc = ipr_cmd->job_step(ipr_cmd);
9221         } while (rc == IPR_RC_JOB_CONTINUE);
9222 }
9223
9224 /**
9225  * _ipr_initiate_ioa_reset - Initiate an adapter reset
9226  * @ioa_cfg:            ioa config struct
9227  * @job_step:           first job step of reset job
9228  * @shutdown_type:      shutdown type
9229  *
9230  * Description: This function will initiate the reset of the given adapter
9231  * starting at the selected job step.
9232  * If the caller needs to wait on the completion of the reset,
9233  * the caller must sleep on the reset_wait_q.
9234  *
9235  * Return value:
9236  *      none
9237  **/
9238 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9239                                     int (*job_step) (struct ipr_cmnd *),
9240                                     enum ipr_shutdown_type shutdown_type)
9241 {
9242         struct ipr_cmnd *ipr_cmd;
9243         int i;
9244
9245         ioa_cfg->in_reset_reload = 1;
9246         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9247                 spin_lock(&ioa_cfg->hrrq[i]._lock);
9248                 ioa_cfg->hrrq[i].allow_cmds = 0;
9249                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9250         }
9251         wmb();
9252         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9253                 ioa_cfg->scsi_unblock = 0;
9254                 ioa_cfg->scsi_blocked = 1;
9255                 scsi_block_requests(ioa_cfg->host);
9256         }
9257
9258         ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9259         ioa_cfg->reset_cmd = ipr_cmd;
9260         ipr_cmd->job_step = job_step;
9261         ipr_cmd->u.shutdown_type = shutdown_type;
9262
9263         ipr_reset_ioa_job(ipr_cmd);
9264 }
9265
9266 /**
9267  * ipr_initiate_ioa_reset - Initiate an adapter reset
9268  * @ioa_cfg:            ioa config struct
9269  * @shutdown_type:      shutdown type
9270  *
9271  * Description: This function will initiate the reset of the given adapter.
9272  * If the caller needs to wait on the completion of the reset,
9273  * the caller must sleep on the reset_wait_q.
9274  *
9275  * Return value:
9276  *      none
9277  **/
9278 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9279                                    enum ipr_shutdown_type shutdown_type)
9280 {
9281         int i;
9282
9283         if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9284                 return;
9285
9286         if (ioa_cfg->in_reset_reload) {
9287                 if (ioa_cfg->sdt_state == GET_DUMP)
9288                         ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9289                 else if (ioa_cfg->sdt_state == READ_DUMP)
9290                         ioa_cfg->sdt_state = ABORT_DUMP;
9291         }
9292
9293         if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9294                 dev_err(&ioa_cfg->pdev->dev,
9295                         "IOA taken offline - error recovery failed\n");
9296
9297                 ioa_cfg->reset_retries = 0;
9298                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9299                         spin_lock(&ioa_cfg->hrrq[i]._lock);
9300                         ioa_cfg->hrrq[i].ioa_is_dead = 1;
9301                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
9302                 }
9303                 wmb();
9304
9305                 if (ioa_cfg->in_ioa_bringdown) {
9306                         ioa_cfg->reset_cmd = NULL;
9307                         ioa_cfg->in_reset_reload = 0;
9308                         ipr_fail_all_ops(ioa_cfg);
9309                         wake_up_all(&ioa_cfg->reset_wait_q);
9310
9311                         if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9312                                 ioa_cfg->scsi_unblock = 1;
9313                                 schedule_work(&ioa_cfg->work_q);
9314                         }
9315                         return;
9316                 } else {
9317                         ioa_cfg->in_ioa_bringdown = 1;
9318                         shutdown_type = IPR_SHUTDOWN_NONE;
9319                 }
9320         }
9321
9322         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9323                                 shutdown_type);
9324 }
9325
9326 /**
9327  * ipr_reset_freeze - Hold off all I/O activity
9328  * @ipr_cmd:    ipr command struct
9329  *
9330  * Description: If the PCI slot is frozen, hold off all I/O
9331  * activity; then, as soon as the slot is available again,
9332  * initiate an adapter reset.
9333  */
9334 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9335 {
9336         struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9337         int i;
9338
9339         /* Disallow new interrupts, avoid loop */
9340         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9341                 spin_lock(&ioa_cfg->hrrq[i]._lock);
9342                 ioa_cfg->hrrq[i].allow_interrupts = 0;
9343                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9344         }
9345         wmb();
9346         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9347         ipr_cmd->done = ipr_reset_ioa_job;
9348         return IPR_RC_JOB_RETURN;
9349 }
9350
9351 /**
9352  * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9353  * @pdev:       PCI device struct
9354  *
9355  * Description: This routine is called to tell us that the MMIO
9356  * access to the IOA has been restored
9357  */
9358 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9359 {
9360         unsigned long flags = 0;
9361         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9362
9363         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9364         if (!ioa_cfg->probe_done)
9365                 pci_save_state(pdev);
9366         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9367         return PCI_ERS_RESULT_NEED_RESET;
9368 }
9369
9370 /**
9371  * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9372  * @pdev:       PCI device struct
9373  *
9374  * Description: This routine is called to tell us that the PCI bus
9375  * is down. Can't do anything here, except put the device driver
9376  * into a holding pattern, waiting for the PCI bus to come back.
9377  */
9378 static void ipr_pci_frozen(struct pci_dev *pdev)
9379 {
9380         unsigned long flags = 0;
9381         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9382
9383         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9384         if (ioa_cfg->probe_done)
9385                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9386         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9387 }
9388
9389 /**
9390  * ipr_pci_slot_reset - Called when PCI slot has been reset.
9391  * @pdev:       PCI device struct
9392  *
9393  * Description: This routine is called by the pci error recovery
9394  * code after the PCI slot has been reset, just before we
9395  * should resume normal operations.
9396  */
9397 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9398 {
9399         unsigned long flags = 0;
9400         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9401
9402         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9403         if (ioa_cfg->probe_done) {
9404                 if (ioa_cfg->needs_warm_reset)
9405                         ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9406                 else
9407                         _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9408                                                 IPR_SHUTDOWN_NONE);
9409         } else
9410                 wake_up_all(&ioa_cfg->eeh_wait_q);
9411         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9412         return PCI_ERS_RESULT_RECOVERED;
9413 }
9414
9415 /**
9416  * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9417  * @pdev:       PCI device struct
9418  *
9419  * Description: This routine is called when the PCI bus has
9420  * permanently failed.
9421  */
9422 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9423 {
9424         unsigned long flags = 0;
9425         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9426         int i;
9427
9428         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9429         if (ioa_cfg->probe_done) {
9430                 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9431                         ioa_cfg->sdt_state = ABORT_DUMP;
9432                 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9433                 ioa_cfg->in_ioa_bringdown = 1;
9434                 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9435                         spin_lock(&ioa_cfg->hrrq[i]._lock);
9436                         ioa_cfg->hrrq[i].allow_cmds = 0;
9437                         spin_unlock(&ioa_cfg->hrrq[i]._lock);
9438                 }
9439                 wmb();
9440                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9441         } else
9442                 wake_up_all(&ioa_cfg->eeh_wait_q);
9443         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9444 }
9445
9446 /**
9447  * ipr_pci_error_detected - Called when a PCI error is detected.
9448  * @pdev:       PCI device struct
9449  * @state:      PCI channel state
9450  *
9451  * Description: Called when a PCI error is detected.
9452  *
9453  * Return value:
9454  *      PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9455  */
9456 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9457                                                pci_channel_state_t state)
9458 {
9459         switch (state) {
9460         case pci_channel_io_frozen:
9461                 ipr_pci_frozen(pdev);
9462                 return PCI_ERS_RESULT_CAN_RECOVER;
9463         case pci_channel_io_perm_failure:
9464                 ipr_pci_perm_failure(pdev);
9465                 return PCI_ERS_RESULT_DISCONNECT;
9466                 break;
9467         default:
9468                 break;
9469         }
9470         return PCI_ERS_RESULT_NEED_RESET;
9471 }
9472
9473 /**
9474  * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9475  * @ioa_cfg:    ioa cfg struct
9476  *
9477  * Description: This is the second phase of adapter initialization
9478  * This function takes care of initilizing the adapter to the point
9479  * where it can accept new commands.
9480
9481  * Return value:
9482  *      0 on success / -EIO on failure
9483  **/
9484 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9485 {
9486         int rc = 0;
9487         unsigned long host_lock_flags = 0;
9488
9489         ENTER;
9490         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9491         dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9492         ioa_cfg->probe_done = 1;
9493         if (ioa_cfg->needs_hard_reset) {
9494                 ioa_cfg->needs_hard_reset = 0;
9495                 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9496         } else
9497                 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9498                                         IPR_SHUTDOWN_NONE);
9499         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9500
9501         LEAVE;
9502         return rc;
9503 }
9504
9505 /**
9506  * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9507  * @ioa_cfg:    ioa config struct
9508  *
9509  * Return value:
9510  *      none
9511  **/
9512 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9513 {
9514         int i;
9515
9516         if (ioa_cfg->ipr_cmnd_list) {
9517                 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9518                         if (ioa_cfg->ipr_cmnd_list[i])
9519                                 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9520                                               ioa_cfg->ipr_cmnd_list[i],
9521                                               ioa_cfg->ipr_cmnd_list_dma[i]);
9522
9523                         ioa_cfg->ipr_cmnd_list[i] = NULL;
9524                 }
9525         }
9526
9527         if (ioa_cfg->ipr_cmd_pool)
9528                 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9529
9530         kfree(ioa_cfg->ipr_cmnd_list);
9531         kfree(ioa_cfg->ipr_cmnd_list_dma);
9532         ioa_cfg->ipr_cmnd_list = NULL;
9533         ioa_cfg->ipr_cmnd_list_dma = NULL;
9534         ioa_cfg->ipr_cmd_pool = NULL;
9535 }
9536
9537 /**
9538  * ipr_free_mem - Frees memory allocated for an adapter
9539  * @ioa_cfg:    ioa cfg struct
9540  *
9541  * Return value:
9542  *      nothing
9543  **/
9544 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9545 {
9546         int i;
9547
9548         kfree(ioa_cfg->res_entries);
9549         dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9550                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9551         ipr_free_cmd_blks(ioa_cfg);
9552
9553         for (i = 0; i < ioa_cfg->hrrq_num; i++)
9554                 dma_free_coherent(&ioa_cfg->pdev->dev,
9555                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9556                                   ioa_cfg->hrrq[i].host_rrq,
9557                                   ioa_cfg->hrrq[i].host_rrq_dma);
9558
9559         dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9560                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9561
9562         for (i = 0; i < IPR_MAX_HCAMS; i++) {
9563                 dma_free_coherent(&ioa_cfg->pdev->dev,
9564                                   sizeof(struct ipr_hostrcb),
9565                                   ioa_cfg->hostrcb[i],
9566                                   ioa_cfg->hostrcb_dma[i]);
9567         }
9568
9569         ipr_free_dump(ioa_cfg);
9570         kfree(ioa_cfg->trace);
9571 }
9572
9573 /**
9574  * ipr_free_irqs - Free all allocated IRQs for the adapter.
9575  * @ioa_cfg:    ipr cfg struct
9576  *
9577  * This function frees all allocated IRQs for the
9578  * specified adapter.
9579  *
9580  * Return value:
9581  *      none
9582  **/
9583 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9584 {
9585         struct pci_dev *pdev = ioa_cfg->pdev;
9586         int i;
9587
9588         for (i = 0; i < ioa_cfg->nvectors; i++)
9589                 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
9590         pci_free_irq_vectors(pdev);
9591 }
9592
9593 /**
9594  * ipr_free_all_resources - Free all allocated resources for an adapter.
9595  * @ipr_cmd:    ipr command struct
9596  *
9597  * This function frees all allocated resources for the
9598  * specified adapter.
9599  *
9600  * Return value:
9601  *      none
9602  **/
9603 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9604 {
9605         struct pci_dev *pdev = ioa_cfg->pdev;
9606
9607         ENTER;
9608         ipr_free_irqs(ioa_cfg);
9609         if (ioa_cfg->reset_work_q)
9610                 destroy_workqueue(ioa_cfg->reset_work_q);
9611         iounmap(ioa_cfg->hdw_dma_regs);
9612         pci_release_regions(pdev);
9613         ipr_free_mem(ioa_cfg);
9614         scsi_host_put(ioa_cfg->host);
9615         pci_disable_device(pdev);
9616         LEAVE;
9617 }
9618
9619 /**
9620  * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9621  * @ioa_cfg:    ioa config struct
9622  *
9623  * Return value:
9624  *      0 on success / -ENOMEM on allocation failure
9625  **/
9626 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9627 {
9628         struct ipr_cmnd *ipr_cmd;
9629         struct ipr_ioarcb *ioarcb;
9630         dma_addr_t dma_addr;
9631         int i, entries_each_hrrq, hrrq_id = 0;
9632
9633         ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9634                                                 sizeof(struct ipr_cmnd), 512, 0);
9635
9636         if (!ioa_cfg->ipr_cmd_pool)
9637                 return -ENOMEM;
9638
9639         ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9640         ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9641
9642         if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9643                 ipr_free_cmd_blks(ioa_cfg);
9644                 return -ENOMEM;
9645         }
9646
9647         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9648                 if (ioa_cfg->hrrq_num > 1) {
9649                         if (i == 0) {
9650                                 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9651                                 ioa_cfg->hrrq[i].min_cmd_id = 0;
9652                                 ioa_cfg->hrrq[i].max_cmd_id =
9653                                         (entries_each_hrrq - 1);
9654                         } else {
9655                                 entries_each_hrrq =
9656                                         IPR_NUM_BASE_CMD_BLKS/
9657                                         (ioa_cfg->hrrq_num - 1);
9658                                 ioa_cfg->hrrq[i].min_cmd_id =
9659                                         IPR_NUM_INTERNAL_CMD_BLKS +
9660                                         (i - 1) * entries_each_hrrq;
9661                                 ioa_cfg->hrrq[i].max_cmd_id =
9662                                         (IPR_NUM_INTERNAL_CMD_BLKS +
9663                                         i * entries_each_hrrq - 1);
9664                         }
9665                 } else {
9666                         entries_each_hrrq = IPR_NUM_CMD_BLKS;
9667                         ioa_cfg->hrrq[i].min_cmd_id = 0;
9668                         ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9669                 }
9670                 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9671         }
9672
9673         BUG_ON(ioa_cfg->hrrq_num == 0);
9674
9675         i = IPR_NUM_CMD_BLKS -
9676                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9677         if (i > 0) {
9678                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9679                 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9680         }
9681
9682         for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9683                 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool,
9684                                 GFP_KERNEL, &dma_addr);
9685
9686                 if (!ipr_cmd) {
9687                         ipr_free_cmd_blks(ioa_cfg);
9688                         return -ENOMEM;
9689                 }
9690
9691                 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9692                 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9693
9694                 ioarcb = &ipr_cmd->ioarcb;
9695                 ipr_cmd->dma_addr = dma_addr;
9696                 if (ioa_cfg->sis64)
9697                         ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9698                 else
9699                         ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9700
9701                 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9702                 if (ioa_cfg->sis64) {
9703                         ioarcb->u.sis64_addr_data.data_ioadl_addr =
9704                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9705                         ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9706                                 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9707                 } else {
9708                         ioarcb->write_ioadl_addr =
9709                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9710                         ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9711                         ioarcb->ioasa_host_pci_addr =
9712                                 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9713                 }
9714                 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9715                 ipr_cmd->cmd_index = i;
9716                 ipr_cmd->ioa_cfg = ioa_cfg;
9717                 ipr_cmd->sense_buffer_dma = dma_addr +
9718                         offsetof(struct ipr_cmnd, sense_buffer);
9719
9720                 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9721                 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9722                 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9723                 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9724                         hrrq_id++;
9725         }
9726
9727         return 0;
9728 }
9729
9730 /**
9731  * ipr_alloc_mem - Allocate memory for an adapter
9732  * @ioa_cfg:    ioa config struct
9733  *
9734  * Return value:
9735  *      0 on success / non-zero for error
9736  **/
9737 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9738 {
9739         struct pci_dev *pdev = ioa_cfg->pdev;
9740         int i, rc = -ENOMEM;
9741
9742         ENTER;
9743         ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported,
9744                                        sizeof(struct ipr_resource_entry),
9745                                        GFP_KERNEL);
9746
9747         if (!ioa_cfg->res_entries)
9748                 goto out;
9749
9750         for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9751                 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9752                 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9753         }
9754
9755         ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9756                                               sizeof(struct ipr_misc_cbs),
9757                                               &ioa_cfg->vpd_cbs_dma,
9758                                               GFP_KERNEL);
9759
9760         if (!ioa_cfg->vpd_cbs)
9761                 goto out_free_res_entries;
9762
9763         if (ipr_alloc_cmd_blks(ioa_cfg))
9764                 goto out_free_vpd_cbs;
9765
9766         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9767                 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9768                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9769                                         &ioa_cfg->hrrq[i].host_rrq_dma,
9770                                         GFP_KERNEL);
9771
9772                 if (!ioa_cfg->hrrq[i].host_rrq)  {
9773                         while (--i > 0)
9774                                 dma_free_coherent(&pdev->dev,
9775                                         sizeof(u32) * ioa_cfg->hrrq[i].size,
9776                                         ioa_cfg->hrrq[i].host_rrq,
9777                                         ioa_cfg->hrrq[i].host_rrq_dma);
9778                         goto out_ipr_free_cmd_blocks;
9779                 }
9780                 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9781         }
9782
9783         ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9784                                                   ioa_cfg->cfg_table_size,
9785                                                   &ioa_cfg->cfg_table_dma,
9786                                                   GFP_KERNEL);
9787
9788         if (!ioa_cfg->u.cfg_table)
9789                 goto out_free_host_rrq;
9790
9791         for (i = 0; i < IPR_MAX_HCAMS; i++) {
9792                 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9793                                                          sizeof(struct ipr_hostrcb),
9794                                                          &ioa_cfg->hostrcb_dma[i],
9795                                                          GFP_KERNEL);
9796
9797                 if (!ioa_cfg->hostrcb[i])
9798                         goto out_free_hostrcb_dma;
9799
9800                 ioa_cfg->hostrcb[i]->hostrcb_dma =
9801                         ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9802                 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9803                 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9804         }
9805
9806         ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES,
9807                                  sizeof(struct ipr_trace_entry),
9808                                  GFP_KERNEL);
9809
9810         if (!ioa_cfg->trace)
9811                 goto out_free_hostrcb_dma;
9812
9813         rc = 0;
9814 out:
9815         LEAVE;
9816         return rc;
9817
9818 out_free_hostrcb_dma:
9819         while (i-- > 0) {
9820                 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9821                                   ioa_cfg->hostrcb[i],
9822                                   ioa_cfg->hostrcb_dma[i]);
9823         }
9824         dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9825                           ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9826 out_free_host_rrq:
9827         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9828                 dma_free_coherent(&pdev->dev,
9829                                   sizeof(u32) * ioa_cfg->hrrq[i].size,
9830                                   ioa_cfg->hrrq[i].host_rrq,
9831                                   ioa_cfg->hrrq[i].host_rrq_dma);
9832         }
9833 out_ipr_free_cmd_blocks:
9834         ipr_free_cmd_blks(ioa_cfg);
9835 out_free_vpd_cbs:
9836         dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9837                           ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9838 out_free_res_entries:
9839         kfree(ioa_cfg->res_entries);
9840         goto out;
9841 }
9842
9843 /**
9844  * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9845  * @ioa_cfg:    ioa config struct
9846  *
9847  * Return value:
9848  *      none
9849  **/
9850 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9851 {
9852         int i;
9853
9854         for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9855                 ioa_cfg->bus_attr[i].bus = i;
9856                 ioa_cfg->bus_attr[i].qas_enabled = 0;
9857                 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9858                 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9859                         ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9860                 else
9861                         ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9862         }
9863 }
9864
9865 /**
9866  * ipr_init_regs - Initialize IOA registers
9867  * @ioa_cfg:    ioa config struct
9868  *
9869  * Return value:
9870  *      none
9871  **/
9872 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9873 {
9874         const struct ipr_interrupt_offsets *p;
9875         struct ipr_interrupts *t;
9876         void __iomem *base;
9877
9878         p = &ioa_cfg->chip_cfg->regs;
9879         t = &ioa_cfg->regs;
9880         base = ioa_cfg->hdw_dma_regs;
9881
9882         t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9883         t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9884         t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9885         t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9886         t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9887         t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9888         t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9889         t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9890         t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9891         t->ioarrin_reg = base + p->ioarrin_reg;
9892         t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9893         t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9894         t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9895         t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9896         t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9897         t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9898
9899         if (ioa_cfg->sis64) {
9900                 t->init_feedback_reg = base + p->init_feedback_reg;
9901                 t->dump_addr_reg = base + p->dump_addr_reg;
9902                 t->dump_data_reg = base + p->dump_data_reg;
9903                 t->endian_swap_reg = base + p->endian_swap_reg;
9904         }
9905 }
9906
9907 /**
9908  * ipr_init_ioa_cfg - Initialize IOA config struct
9909  * @ioa_cfg:    ioa config struct
9910  * @host:               scsi host struct
9911  * @pdev:               PCI dev struct
9912  *
9913  * Return value:
9914  *      none
9915  **/
9916 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9917                              struct Scsi_Host *host, struct pci_dev *pdev)
9918 {
9919         int i;
9920
9921         ioa_cfg->host = host;
9922         ioa_cfg->pdev = pdev;
9923         ioa_cfg->log_level = ipr_log_level;
9924         ioa_cfg->doorbell = IPR_DOORBELL;
9925         sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9926         sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9927         sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9928         sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9929         sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9930         sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9931
9932         INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9933         INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9934         INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9935         INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9936         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9937         INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9938         init_waitqueue_head(&ioa_cfg->reset_wait_q);
9939         init_waitqueue_head(&ioa_cfg->msi_wait_q);
9940         init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9941         ioa_cfg->sdt_state = INACTIVE;
9942
9943         ipr_initialize_bus_attr(ioa_cfg);
9944         ioa_cfg->max_devs_supported = ipr_max_devs;
9945
9946         if (ioa_cfg->sis64) {
9947                 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9948                 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9949                 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9950                         ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9951                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9952                                            + ((sizeof(struct ipr_config_table_entry64)
9953                                                * ioa_cfg->max_devs_supported)));
9954         } else {
9955                 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9956                 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9957                 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9958                         ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9959                 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9960                                            + ((sizeof(struct ipr_config_table_entry)
9961                                                * ioa_cfg->max_devs_supported)));
9962         }
9963
9964         host->max_channel = IPR_VSET_BUS;
9965         host->unique_id = host->host_no;
9966         host->max_cmd_len = IPR_MAX_CDB_LEN;
9967         host->can_queue = ioa_cfg->max_cmds;
9968         pci_set_drvdata(pdev, ioa_cfg);
9969
9970         for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9971                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9972                 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9973                 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9974                 if (i == 0)
9975                         ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9976                 else
9977                         ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9978         }
9979 }
9980
9981 /**
9982  * ipr_get_chip_info - Find adapter chip information
9983  * @dev_id:             PCI device id struct
9984  *
9985  * Return value:
9986  *      ptr to chip information on success / NULL on failure
9987  **/
9988 static const struct ipr_chip_t *
9989 ipr_get_chip_info(const struct pci_device_id *dev_id)
9990 {
9991         int i;
9992
9993         for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9994                 if (ipr_chip[i].vendor == dev_id->vendor &&
9995                     ipr_chip[i].device == dev_id->device)
9996                         return &ipr_chip[i];
9997         return NULL;
9998 }
9999
10000 /**
10001  * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
10002  *                                              during probe time
10003  * @ioa_cfg:    ioa config struct
10004  *
10005  * Return value:
10006  *      None
10007  **/
10008 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
10009 {
10010         struct pci_dev *pdev = ioa_cfg->pdev;
10011
10012         if (pci_channel_offline(pdev)) {
10013                 wait_event_timeout(ioa_cfg->eeh_wait_q,
10014                                    !pci_channel_offline(pdev),
10015                                    IPR_PCI_ERROR_RECOVERY_TIMEOUT);
10016                 pci_restore_state(pdev);
10017         }
10018 }
10019
10020 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
10021 {
10022         int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
10023
10024         for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
10025                 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
10026                          "host%d-%d", ioa_cfg->host->host_no, vec_idx);
10027                 ioa_cfg->vectors_info[vec_idx].
10028                         desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
10029         }
10030 }
10031
10032 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
10033                 struct pci_dev *pdev)
10034 {
10035         int i, rc;
10036
10037         for (i = 1; i < ioa_cfg->nvectors; i++) {
10038                 rc = request_irq(pci_irq_vector(pdev, i),
10039                         ipr_isr_mhrrq,
10040                         0,
10041                         ioa_cfg->vectors_info[i].desc,
10042                         &ioa_cfg->hrrq[i]);
10043                 if (rc) {
10044                         while (--i >= 0)
10045                                 free_irq(pci_irq_vector(pdev, i),
10046                                         &ioa_cfg->hrrq[i]);
10047                         return rc;
10048                 }
10049         }
10050         return 0;
10051 }
10052
10053 /**
10054  * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
10055  * @pdev:               PCI device struct
10056  *
10057  * Description: Simply set the msi_received flag to 1 indicating that
10058  * Message Signaled Interrupts are supported.
10059  *
10060  * Return value:
10061  *      0 on success / non-zero on failure
10062  **/
10063 static irqreturn_t ipr_test_intr(int irq, void *devp)
10064 {
10065         struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
10066         unsigned long lock_flags = 0;
10067         irqreturn_t rc = IRQ_HANDLED;
10068
10069         dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
10070         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10071
10072         ioa_cfg->msi_received = 1;
10073         wake_up(&ioa_cfg->msi_wait_q);
10074
10075         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10076         return rc;
10077 }
10078
10079 /**
10080  * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
10081  * @pdev:               PCI device struct
10082  *
10083  * Description: This routine sets up and initiates a test interrupt to determine
10084  * if the interrupt is received via the ipr_test_intr() service routine.
10085  * If the tests fails, the driver will fall back to LSI.
10086  *
10087  * Return value:
10088  *      0 on success / non-zero on failure
10089  **/
10090 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
10091 {
10092         int rc;
10093         volatile u32 int_reg;
10094         unsigned long lock_flags = 0;
10095         int irq = pci_irq_vector(pdev, 0);
10096
10097         ENTER;
10098
10099         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10100         init_waitqueue_head(&ioa_cfg->msi_wait_q);
10101         ioa_cfg->msi_received = 0;
10102         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10103         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
10104         int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
10105         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10106
10107         rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
10108         if (rc) {
10109                 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
10110                 return rc;
10111         } else if (ipr_debug)
10112                 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
10113
10114         writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
10115         int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
10116         wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
10117         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10118         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10119
10120         if (!ioa_cfg->msi_received) {
10121                 /* MSI test failed */
10122                 dev_info(&pdev->dev, "MSI test failed.  Falling back to LSI.\n");
10123                 rc = -EOPNOTSUPP;
10124         } else if (ipr_debug)
10125                 dev_info(&pdev->dev, "MSI test succeeded.\n");
10126
10127         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10128
10129         free_irq(irq, ioa_cfg);
10130
10131         LEAVE;
10132
10133         return rc;
10134 }
10135
10136  /* ipr_probe_ioa - Allocates memory and does first stage of initialization
10137  * @pdev:               PCI device struct
10138  * @dev_id:             PCI device id struct
10139  *
10140  * Return value:
10141  *      0 on success / non-zero on failure
10142  **/
10143 static int ipr_probe_ioa(struct pci_dev *pdev,
10144                          const struct pci_device_id *dev_id)
10145 {
10146         struct ipr_ioa_cfg *ioa_cfg;
10147         struct Scsi_Host *host;
10148         unsigned long ipr_regs_pci;
10149         void __iomem *ipr_regs;
10150         int rc = PCIBIOS_SUCCESSFUL;
10151         volatile u32 mask, uproc, interrupts;
10152         unsigned long lock_flags, driver_lock_flags;
10153         unsigned int irq_flag;
10154
10155         ENTER;
10156
10157         dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
10158         host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
10159
10160         if (!host) {
10161                 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
10162                 rc = -ENOMEM;
10163                 goto out;
10164         }
10165
10166         ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
10167         memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
10168         ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
10169
10170         ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
10171
10172         if (!ioa_cfg->ipr_chip) {
10173                 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
10174                         dev_id->vendor, dev_id->device);
10175                 goto out_scsi_host_put;
10176         }
10177
10178         /* set SIS 32 or SIS 64 */
10179         ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10180         ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10181         ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10182         ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10183
10184         if (ipr_transop_timeout)
10185                 ioa_cfg->transop_timeout = ipr_transop_timeout;
10186         else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10187                 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10188         else
10189                 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10190
10191         ioa_cfg->revid = pdev->revision;
10192
10193         ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10194
10195         ipr_regs_pci = pci_resource_start(pdev, 0);
10196
10197         rc = pci_request_regions(pdev, IPR_NAME);
10198         if (rc < 0) {
10199                 dev_err(&pdev->dev,
10200                         "Couldn't register memory range of registers\n");
10201                 goto out_scsi_host_put;
10202         }
10203
10204         rc = pci_enable_device(pdev);
10205
10206         if (rc || pci_channel_offline(pdev)) {
10207                 if (pci_channel_offline(pdev)) {
10208                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10209                         rc = pci_enable_device(pdev);
10210                 }
10211
10212                 if (rc) {
10213                         dev_err(&pdev->dev, "Cannot enable adapter\n");
10214                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10215                         goto out_release_regions;
10216                 }
10217         }
10218
10219         ipr_regs = pci_ioremap_bar(pdev, 0);
10220
10221         if (!ipr_regs) {
10222                 dev_err(&pdev->dev,
10223                         "Couldn't map memory range of registers\n");
10224                 rc = -ENOMEM;
10225                 goto out_disable;
10226         }
10227
10228         ioa_cfg->hdw_dma_regs = ipr_regs;
10229         ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10230         ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10231
10232         ipr_init_regs(ioa_cfg);
10233
10234         if (ioa_cfg->sis64) {
10235                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10236                 if (rc < 0) {
10237                         dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10238                         rc = dma_set_mask_and_coherent(&pdev->dev,
10239                                                        DMA_BIT_MASK(32));
10240                 }
10241         } else
10242                 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10243
10244         if (rc < 0) {
10245                 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10246                 goto cleanup_nomem;
10247         }
10248
10249         rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10250                                    ioa_cfg->chip_cfg->cache_line_size);
10251
10252         if (rc != PCIBIOS_SUCCESSFUL) {
10253                 dev_err(&pdev->dev, "Write of cache line size failed\n");
10254                 ipr_wait_for_pci_err_recovery(ioa_cfg);
10255                 rc = -EIO;
10256                 goto cleanup_nomem;
10257         }
10258
10259         /* Issue MMIO read to ensure card is not in EEH */
10260         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10261         ipr_wait_for_pci_err_recovery(ioa_cfg);
10262
10263         if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10264                 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10265                         IPR_MAX_MSIX_VECTORS);
10266                 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10267         }
10268
10269         irq_flag = PCI_IRQ_LEGACY;
10270         if (ioa_cfg->ipr_chip->has_msi)
10271                 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
10272         rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
10273         if (rc < 0) {
10274                 ipr_wait_for_pci_err_recovery(ioa_cfg);
10275                 goto cleanup_nomem;
10276         }
10277         ioa_cfg->nvectors = rc;
10278
10279         if (!pdev->msi_enabled && !pdev->msix_enabled)
10280                 ioa_cfg->clear_isr = 1;
10281
10282         pci_set_master(pdev);
10283
10284         if (pci_channel_offline(pdev)) {
10285                 ipr_wait_for_pci_err_recovery(ioa_cfg);
10286                 pci_set_master(pdev);
10287                 if (pci_channel_offline(pdev)) {
10288                         rc = -EIO;
10289                         goto out_msi_disable;
10290                 }
10291         }
10292
10293         if (pdev->msi_enabled || pdev->msix_enabled) {
10294                 rc = ipr_test_msi(ioa_cfg, pdev);
10295                 switch (rc) {
10296                 case 0:
10297                         dev_info(&pdev->dev,
10298                                 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
10299                                 pdev->msix_enabled ? "-X" : "");
10300                         break;
10301                 case -EOPNOTSUPP:
10302                         ipr_wait_for_pci_err_recovery(ioa_cfg);
10303                         pci_free_irq_vectors(pdev);
10304
10305                         ioa_cfg->nvectors = 1;
10306                         ioa_cfg->clear_isr = 1;
10307                         break;
10308                 default:
10309                         goto out_msi_disable;
10310                 }
10311         }
10312
10313         ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10314                                 (unsigned int)num_online_cpus(),
10315                                 (unsigned int)IPR_MAX_HRRQ_NUM);
10316
10317         if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10318                 goto out_msi_disable;
10319
10320         if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10321                 goto out_msi_disable;
10322
10323         rc = ipr_alloc_mem(ioa_cfg);
10324         if (rc < 0) {
10325                 dev_err(&pdev->dev,
10326                         "Couldn't allocate enough memory for device driver!\n");
10327                 goto out_msi_disable;
10328         }
10329
10330         /* Save away PCI config space for use following IOA reset */
10331         rc = pci_save_state(pdev);
10332
10333         if (rc != PCIBIOS_SUCCESSFUL) {
10334                 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10335                 rc = -EIO;
10336                 goto cleanup_nolog;
10337         }
10338
10339         /*
10340          * If HRRQ updated interrupt is not masked, or reset alert is set,
10341          * the card is in an unknown state and needs a hard reset
10342          */
10343         mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10344         interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10345         uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10346         if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10347                 ioa_cfg->needs_hard_reset = 1;
10348         if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10349                 ioa_cfg->needs_hard_reset = 1;
10350         if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10351                 ioa_cfg->ioa_unit_checked = 1;
10352
10353         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10354         ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10355         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10356
10357         if (pdev->msi_enabled || pdev->msix_enabled) {
10358                 name_msi_vectors(ioa_cfg);
10359                 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
10360                         ioa_cfg->vectors_info[0].desc,
10361                         &ioa_cfg->hrrq[0]);
10362                 if (!rc)
10363                         rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
10364         } else {
10365                 rc = request_irq(pdev->irq, ipr_isr,
10366                          IRQF_SHARED,
10367                          IPR_NAME, &ioa_cfg->hrrq[0]);
10368         }
10369         if (rc) {
10370                 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10371                         pdev->irq, rc);
10372                 goto cleanup_nolog;
10373         }
10374
10375         if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10376             (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10377                 ioa_cfg->needs_warm_reset = 1;
10378                 ioa_cfg->reset = ipr_reset_slot_reset;
10379
10380                 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10381                                                                 WQ_MEM_RECLAIM, host->host_no);
10382
10383                 if (!ioa_cfg->reset_work_q) {
10384                         dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10385                         rc = -ENOMEM;
10386                         goto out_free_irq;
10387                 }
10388         } else
10389                 ioa_cfg->reset = ipr_reset_start_bist;
10390
10391         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10392         list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10393         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10394
10395         LEAVE;
10396 out:
10397         return rc;
10398
10399 out_free_irq:
10400         ipr_free_irqs(ioa_cfg);
10401 cleanup_nolog:
10402         ipr_free_mem(ioa_cfg);
10403 out_msi_disable:
10404         ipr_wait_for_pci_err_recovery(ioa_cfg);
10405         pci_free_irq_vectors(pdev);
10406 cleanup_nomem:
10407         iounmap(ipr_regs);
10408 out_disable:
10409         pci_disable_device(pdev);
10410 out_release_regions:
10411         pci_release_regions(pdev);
10412 out_scsi_host_put:
10413         scsi_host_put(host);
10414         goto out;
10415 }
10416
10417 /**
10418  * ipr_initiate_ioa_bringdown - Bring down an adapter
10419  * @ioa_cfg:            ioa config struct
10420  * @shutdown_type:      shutdown type
10421  *
10422  * Description: This function will initiate bringing down the adapter.
10423  * This consists of issuing an IOA shutdown to the adapter
10424  * to flush the cache, and running BIST.
10425  * If the caller needs to wait on the completion of the reset,
10426  * the caller must sleep on the reset_wait_q.
10427  *
10428  * Return value:
10429  *      none
10430  **/
10431 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10432                                        enum ipr_shutdown_type shutdown_type)
10433 {
10434         ENTER;
10435         if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10436                 ioa_cfg->sdt_state = ABORT_DUMP;
10437         ioa_cfg->reset_retries = 0;
10438         ioa_cfg->in_ioa_bringdown = 1;
10439         ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10440         LEAVE;
10441 }
10442
10443 /**
10444  * __ipr_remove - Remove a single adapter
10445  * @pdev:       pci device struct
10446  *
10447  * Adapter hot plug remove entry point.
10448  *
10449  * Return value:
10450  *      none
10451  **/
10452 static void __ipr_remove(struct pci_dev *pdev)
10453 {
10454         unsigned long host_lock_flags = 0;
10455         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10456         int i;
10457         unsigned long driver_lock_flags;
10458         ENTER;
10459
10460         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10461         while (ioa_cfg->in_reset_reload) {
10462                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10463                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10464                 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10465         }
10466
10467         for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10468                 spin_lock(&ioa_cfg->hrrq[i]._lock);
10469                 ioa_cfg->hrrq[i].removing_ioa = 1;
10470                 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10471         }
10472         wmb();
10473         ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10474
10475         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10476         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10477         flush_work(&ioa_cfg->work_q);
10478         if (ioa_cfg->reset_work_q)
10479                 flush_workqueue(ioa_cfg->reset_work_q);
10480         INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10481         spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10482
10483         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10484         list_del(&ioa_cfg->queue);
10485         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10486
10487         if (ioa_cfg->sdt_state == ABORT_DUMP)
10488                 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10489         spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10490
10491         ipr_free_all_resources(ioa_cfg);
10492
10493         LEAVE;
10494 }
10495
10496 /**
10497  * ipr_remove - IOA hot plug remove entry point
10498  * @pdev:       pci device struct
10499  *
10500  * Adapter hot plug remove entry point.
10501  *
10502  * Return value:
10503  *      none
10504  **/
10505 static void ipr_remove(struct pci_dev *pdev)
10506 {
10507         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10508
10509         ENTER;
10510
10511         ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10512                               &ipr_trace_attr);
10513         ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10514                              &ipr_dump_attr);
10515         sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10516                         &ipr_ioa_async_err_log);
10517         scsi_remove_host(ioa_cfg->host);
10518
10519         __ipr_remove(pdev);
10520
10521         LEAVE;
10522 }
10523
10524 /**
10525  * ipr_probe - Adapter hot plug add entry point
10526  *
10527  * Return value:
10528  *      0 on success / non-zero on failure
10529  **/
10530 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10531 {
10532         struct ipr_ioa_cfg *ioa_cfg;
10533         unsigned long flags;
10534         int rc, i;
10535
10536         rc = ipr_probe_ioa(pdev, dev_id);
10537
10538         if (rc)
10539                 return rc;
10540
10541         ioa_cfg = pci_get_drvdata(pdev);
10542         rc = ipr_probe_ioa_part2(ioa_cfg);
10543
10544         if (rc) {
10545                 __ipr_remove(pdev);
10546                 return rc;
10547         }
10548
10549         rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10550
10551         if (rc) {
10552                 __ipr_remove(pdev);
10553                 return rc;
10554         }
10555
10556         rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10557                                    &ipr_trace_attr);
10558
10559         if (rc) {
10560                 scsi_remove_host(ioa_cfg->host);
10561                 __ipr_remove(pdev);
10562                 return rc;
10563         }
10564
10565         rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
10566                         &ipr_ioa_async_err_log);
10567
10568         if (rc) {
10569                 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10570                                 &ipr_dump_attr);
10571                 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10572                                 &ipr_trace_attr);
10573                 scsi_remove_host(ioa_cfg->host);
10574                 __ipr_remove(pdev);
10575                 return rc;
10576         }
10577
10578         rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10579                                    &ipr_dump_attr);
10580
10581         if (rc) {
10582                 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10583                                       &ipr_ioa_async_err_log);
10584                 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10585                                       &ipr_trace_attr);
10586                 scsi_remove_host(ioa_cfg->host);
10587                 __ipr_remove(pdev);
10588                 return rc;
10589         }
10590         spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10591         ioa_cfg->scan_enabled = 1;
10592         schedule_work(&ioa_cfg->work_q);
10593         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10594
10595         ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10596
10597         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10598                 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10599                         irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10600                                         ioa_cfg->iopoll_weight, ipr_iopoll);
10601                 }
10602         }
10603
10604         scsi_scan_host(ioa_cfg->host);
10605
10606         return 0;
10607 }
10608
10609 /**
10610  * ipr_shutdown - Shutdown handler.
10611  * @pdev:       pci device struct
10612  *
10613  * This function is invoked upon system shutdown/reboot. It will issue
10614  * an adapter shutdown to the adapter to flush the write cache.
10615  *
10616  * Return value:
10617  *      none
10618  **/
10619 static void ipr_shutdown(struct pci_dev *pdev)
10620 {
10621         struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10622         unsigned long lock_flags = 0;
10623         enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10624         int i;
10625
10626         spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10627         if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10628                 ioa_cfg->iopoll_weight = 0;
10629                 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10630                         irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10631         }
10632
10633         while (ioa_cfg->in_reset_reload) {
10634                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10635                 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10636                 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10637         }
10638
10639         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10640                 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10641
10642         ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10643         spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10644         wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10645         if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10646                 ipr_free_irqs(ioa_cfg);
10647                 pci_disable_device(ioa_cfg->pdev);
10648         }
10649 }
10650
10651 static struct pci_device_id ipr_pci_table[] = {
10652         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10653                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10654         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10655                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10656         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10657                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10658         { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10659                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10660         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10661                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10662         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10663                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10664         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10665                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10666         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10667                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10668                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10669         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10670               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10671         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10672               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10673               IPR_USE_LONG_TRANSOP_TIMEOUT },
10674         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10675               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10676               IPR_USE_LONG_TRANSOP_TIMEOUT },
10677         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10678               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10679         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10680               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10681               IPR_USE_LONG_TRANSOP_TIMEOUT},
10682         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10683               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10684               IPR_USE_LONG_TRANSOP_TIMEOUT },
10685         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10686               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10687               IPR_USE_LONG_TRANSOP_TIMEOUT },
10688         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10689               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10690         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10691               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10692         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10693               PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10694               IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10695         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10696                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10697         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10698                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10699         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10700                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10701                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10702         { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10703                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10704                 IPR_USE_LONG_TRANSOP_TIMEOUT },
10705         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10706                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10707         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10708                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10709         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10710                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10711         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10712                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10713         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10714                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10715         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10716                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10717         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10718                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10719         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10720                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10721         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10722                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10723         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10724                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10725         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10726                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10727         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10728                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10729         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10730                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10731         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10732                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10733         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10734                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10735         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10736                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10737         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10738                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10739         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10740                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10741         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10742                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10743         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10744                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10745         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10746                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10747         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10748                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10749         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10750                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10751         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10752                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10753         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10754                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10755         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10756                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10757         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10758                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10759         { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10760                 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10761         { }
10762 };
10763 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10764
10765 static const struct pci_error_handlers ipr_err_handler = {
10766         .error_detected = ipr_pci_error_detected,
10767         .mmio_enabled = ipr_pci_mmio_enabled,
10768         .slot_reset = ipr_pci_slot_reset,
10769 };
10770
10771 static struct pci_driver ipr_driver = {
10772         .name = IPR_NAME,
10773         .id_table = ipr_pci_table,
10774         .probe = ipr_probe,
10775         .remove = ipr_remove,
10776         .shutdown = ipr_shutdown,
10777         .err_handler = &ipr_err_handler,
10778 };
10779
10780 /**
10781  * ipr_halt_done - Shutdown prepare completion
10782  *
10783  * Return value:
10784  *      none
10785  **/
10786 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10787 {
10788         list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10789 }
10790
10791 /**
10792  * ipr_halt - Issue shutdown prepare to all adapters
10793  *
10794  * Return value:
10795  *      NOTIFY_OK on success / NOTIFY_DONE on failure
10796  **/
10797 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10798 {
10799         struct ipr_cmnd *ipr_cmd;
10800         struct ipr_ioa_cfg *ioa_cfg;
10801         unsigned long flags = 0, driver_lock_flags;
10802
10803         if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10804                 return NOTIFY_DONE;
10805
10806         spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10807
10808         list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10809                 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10810                 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10811                     (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10812                         spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10813                         continue;
10814                 }
10815
10816                 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10817                 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10818                 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10819                 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10820                 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10821
10822                 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10823                 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10824         }
10825         spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10826
10827         return NOTIFY_OK;
10828 }
10829
10830 static struct notifier_block ipr_notifier = {
10831         ipr_halt, NULL, 0
10832 };
10833
10834 /**
10835  * ipr_init - Module entry point
10836  *
10837  * Return value:
10838  *      0 on success / negative value on failure
10839  **/
10840 static int __init ipr_init(void)
10841 {
10842         ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10843                  IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10844
10845         register_reboot_notifier(&ipr_notifier);
10846         return pci_register_driver(&ipr_driver);
10847 }
10848
10849 /**
10850  * ipr_exit - Module unload
10851  *
10852  * Module unload entry point.
10853  *
10854  * Return value:
10855  *      none
10856  **/
10857 static void __exit ipr_exit(void)
10858 {
10859         unregister_reboot_notifier(&ipr_notifier);
10860         pci_unregister_driver(&ipr_driver);
10861 }
10862
10863 module_init(ipr_init);
10864 module_exit(ipr_exit);