drivers/scsi/megaraid.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *                      Linux MegaRAID device driver
   5  *
   6  * Copyright (c) 2002  LSI Logic Corporation.
   7  *
   8  * Copyright (c) 2002  Red Hat, Inc. All rights reserved.
   9  *        - fixes
  10  *        - speed-ups (list handling fixes, issued_list, optimizations.)
  11  *        - lots of cleanups.
  12  *
  13  * Copyright (c) 2003  Christoph Hellwig  <hch@lst.de>
  14  *        - new-style, hotplug-aware pci probing and scsi registration
  15  *
  16  * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
  17  *                                              <Seokmann.Ju@lsil.com>
  18  *
  19  * Description: Linux device driver for LSI Logic MegaRAID controller
  20  *
  21  * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
  22  *                                      518, 520, 531, 532
  23  *
  24  * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
  25  * and others. Please send updates to the mailing list
  26  * linux-scsi@vger.kernel.org .
  27  */
  28
  29 #include <linux/mm.h>
  30 #include <linux/fs.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/uaccess.h>
  33 #include <asm/io.h>
  34 #include <linux/completion.h>
  35 #include <linux/delay.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/seq_file.h>
  38 #include <linux/reboot.h>
  39 #include <linux/module.h>
  40 #include <linux/list.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/pci.h>
  43 #include <linux/init.h>
  44 #include <linux/dma-mapping.h>
  45 #include <linux/mutex.h>
  46 #include <linux/slab.h>
  47 #include <scsi/scsicam.h>
  48
  49 #include "scsi.h"
  50 #include <scsi/scsi_host.h>
  51
  52 #include "megaraid.h"
  53
  54 #define MEGARAID_MODULE_VERSION "2.00.4"
  55
  56 MODULE_AUTHOR ("sju@lsil.com");
  57 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
  58 MODULE_LICENSE ("GPL");
  59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
  60
  61 static DEFINE_MUTEX(megadev_mutex);
  62 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
  63 module_param(max_cmd_per_lun, uint, 0);
  64 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
  65
  66 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
  67 module_param(max_sectors_per_io, ushort, 0);
  68 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
  69
  70
  71 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
  72 module_param(max_mbox_busy_wait, ushort, 0);
  73 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
  74
  75 #define RDINDOOR(adapter)       readl((adapter)->mmio_base + 0x20)
  76 #define RDOUTDOOR(adapter)      readl((adapter)->mmio_base + 0x2C)
  77 #define WRINDOOR(adapter,value)  writel(value, (adapter)->mmio_base + 0x20)
  78 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
  79
  80 /*
  81  * Global variables
  82  */
  83
  84 static int hba_count;
  85 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
  86 static struct proc_dir_entry *mega_proc_dir_entry;
  87
  88 /* For controller re-ordering */
  89 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
  90
  91 static long
  92 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
  93
  94 /*
  95  * The File Operations structure for the serial/ioctl interface of the driver
  96  */
  97 static const struct file_operations megadev_fops = {
  98         .owner          = THIS_MODULE,
  99         .unlocked_ioctl = megadev_unlocked_ioctl,
 100         .open           = megadev_open,
 101         .llseek         = noop_llseek,
 102 };
 103
 104 /*
 105  * Array to structures for storing the information about the controllers. This
 106  * information is sent to the user level applications, when they do an ioctl
 107  * for this information.
 108  */
 109 static struct mcontroller mcontroller[MAX_CONTROLLERS];
 110
 111 /* The current driver version */
 112 static u32 driver_ver = 0x02000000;
 113
 114 /* major number used by the device for character interface */
 115 static int major;
 116
 117 #define IS_RAID_CH(hba, ch)     (((hba)->mega_ch_class >> (ch)) & 0x01)
 118
 119
 120 /*
 121  * Debug variable to print some diagnostic messages
 122  */
 123 static int trace_level;
 124
 125 /**
 126  * mega_setup_mailbox()
 127  * @adapter: pointer to our soft state
 128  *
 129  * Allocates a 8 byte aligned memory for the handshake mailbox.
 130  */
 131 static int
 132 mega_setup_mailbox(adapter_t *adapter)
 133 {
 134         unsigned long   align;
 135
 136         adapter->una_mbox64 = dma_alloc_coherent(&adapter->dev->dev,
 137                                                  sizeof(mbox64_t),
 138                                                  &adapter->una_mbox64_dma,
 139                                                  GFP_KERNEL);
 140
 141         if( !adapter->una_mbox64 ) return -1;
 142
 143         adapter->mbox = &adapter->una_mbox64->mbox;
 144
 145         adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
 146                         (~0UL ^ 0xFUL));
 147
 148         adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
 149
 150         align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
 151
 152         adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
 153
 154         /*
 155          * Register the mailbox if the controller is an io-mapped controller
 156          */
 157         if( adapter->flag & BOARD_IOMAP ) {
 158
 159                 outb(adapter->mbox_dma & 0xFF,
 160                                 adapter->host->io_port + MBOX_PORT0);
 161
 162                 outb((adapter->mbox_dma >> 8) & 0xFF,
 163                                 adapter->host->io_port + MBOX_PORT1);
 164
 165                 outb((adapter->mbox_dma >> 16) & 0xFF,
 166                                 adapter->host->io_port + MBOX_PORT2);
 167
 168                 outb((adapter->mbox_dma >> 24) & 0xFF,
 169                                 adapter->host->io_port + MBOX_PORT3);
 170
 171                 outb(ENABLE_MBOX_BYTE,
 172                                 adapter->host->io_port + ENABLE_MBOX_REGION);
 173
 174                 irq_ack(adapter);
 175
 176                 irq_enable(adapter);
 177         }
 178
 179         return 0;
 180 }
 181
 182
 183 /*
 184  * mega_query_adapter()
 185  * @adapter - pointer to our soft state
 186  *
 187  * Issue the adapter inquiry commands to the controller and find out
 188  * information and parameter about the devices attached
 189  */
 190 static int
 191 mega_query_adapter(adapter_t *adapter)
 192 {
 193         dma_addr_t      prod_info_dma_handle;
 194         mega_inquiry3   *inquiry3;
 195         u8      raw_mbox[sizeof(struct mbox_out)];
 196         mbox_t  *mbox;
 197         int     retval;
 198
 199         /* Initialize adapter inquiry mailbox */
 200
 201         mbox = (mbox_t *)raw_mbox;
 202
 203         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
 204         memset(&mbox->m_out, 0, sizeof(raw_mbox));
 205
 206         /*
 207          * Try to issue Inquiry3 command
 208          * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
 209          * update enquiry3 structure
 210          */
 211         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
 212
 213         inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
 214
 215         raw_mbox[0] = FC_NEW_CONFIG;            /* i.e. mbox->cmd=0xA1 */
 216         raw_mbox[2] = NC_SUBOP_ENQUIRY3;        /* i.e. 0x0F */
 217         raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;  /* i.e. 0x02 */
 218
 219         /* Issue a blocking command to the card */
 220         if ((retval = issue_scb_block(adapter, raw_mbox))) {
 221                 /* the adapter does not support 40ld */
 222
 223                 mraid_ext_inquiry       *ext_inq;
 224                 mraid_inquiry           *inq;
 225                 dma_addr_t              dma_handle;
 226
 227                 ext_inq = dma_alloc_coherent(&adapter->dev->dev,
 228                                              sizeof(mraid_ext_inquiry),
 229                                              &dma_handle, GFP_KERNEL);
 230
 231                 if( ext_inq == NULL ) return -1;
 232
 233                 inq = &ext_inq->raid_inq;
 234
 235                 mbox->m_out.xferaddr = (u32)dma_handle;
 236
 237                 /*issue old 0x04 command to adapter */
 238                 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
 239
 240                 issue_scb_block(adapter, raw_mbox);
 241
 242                 /*
 243                  * update Enquiry3 and ProductInfo structures with
 244                  * mraid_inquiry structure
 245                  */
 246                 mega_8_to_40ld(inq, inquiry3,
 247                                 (mega_product_info *)&adapter->product_info);
 248
 249                 dma_free_coherent(&adapter->dev->dev,
 250                                   sizeof(mraid_ext_inquiry), ext_inq,
 251                                   dma_handle);
 252
 253         } else {                /*adapter supports 40ld */
 254                 adapter->flag |= BOARD_40LD;
 255
 256                 /*
 257                  * get product_info, which is static information and will be
 258                  * unchanged
 259                  */
 260                 prod_info_dma_handle = dma_map_single(&adapter->dev->dev,
 261                                                       (void *)&adapter->product_info,
 262                                                       sizeof(mega_product_info),
 263                                                       DMA_FROM_DEVICE);
 264
 265                 mbox->m_out.xferaddr = prod_info_dma_handle;
 266
 267                 raw_mbox[0] = FC_NEW_CONFIG;    /* i.e. mbox->cmd=0xA1 */
 268                 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;    /* i.e. 0x0E */
 269
 270                 if ((retval = issue_scb_block(adapter, raw_mbox)))
 271                         dev_warn(&adapter->dev->dev,
 272                                 "Product_info cmd failed with error: %d\n",
 273                                 retval);
 274
 275                 dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle,
 276                                  sizeof(mega_product_info), DMA_FROM_DEVICE);
 277         }
 278
 279
 280         /*
 281          * kernel scans the channels from 0 to <= max_channel
 282          */
 283         adapter->host->max_channel =
 284                 adapter->product_info.nchannels + NVIRT_CHAN -1;
 285
 286         adapter->host->max_id = 16;     /* max targets per channel */
 287
 288         adapter->host->max_lun = 7;     /* Up to 7 luns for non disk devices */
 289
 290         adapter->host->cmd_per_lun = max_cmd_per_lun;
 291
 292         adapter->numldrv = inquiry3->num_ldrv;
 293
 294         adapter->max_cmds = adapter->product_info.max_commands;
 295
 296         if(adapter->max_cmds > MAX_COMMANDS)
 297                 adapter->max_cmds = MAX_COMMANDS;
 298
 299         adapter->host->can_queue = adapter->max_cmds - 1;
 300
 301         /*
 302          * Get the maximum number of scatter-gather elements supported by this
 303          * firmware
 304          */
 305         mega_get_max_sgl(adapter);
 306
 307         adapter->host->sg_tablesize = adapter->sglen;
 308
 309         /* use HP firmware and bios version encoding
 310            Note: fw_version[0|1] and bios_version[0|1] were originally shifted
 311            right 8 bits making them zero. This 0 value was hardcoded to fix
 312            sparse warnings. */
 313         if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
 314                 snprintf(adapter->fw_version, sizeof(adapter->fw_version),
 315                          "%c%d%d.%d%d",
 316                          adapter->product_info.fw_version[2],
 317                          0,
 318                          adapter->product_info.fw_version[1] & 0x0f,
 319                          0,
 320                          adapter->product_info.fw_version[0] & 0x0f);
 321                 snprintf(adapter->bios_version, sizeof(adapter->fw_version),
 322                          "%c%d%d.%d%d",
 323                          adapter->product_info.bios_version[2],
 324                          0,
 325                          adapter->product_info.bios_version[1] & 0x0f,
 326                          0,
 327                          adapter->product_info.bios_version[0] & 0x0f);
 328         } else {
 329                 memcpy(adapter->fw_version,
 330                                 (char *)adapter->product_info.fw_version, 4);
 331                 adapter->fw_version[4] = 0;
 332
 333                 memcpy(adapter->bios_version,
 334                                 (char *)adapter->product_info.bios_version, 4);
 335
 336                 adapter->bios_version[4] = 0;
 337         }
 338
 339         dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
 340                 adapter->fw_version, adapter->bios_version, adapter->numldrv);
 341
 342         /*
 343          * Do we support extended (>10 bytes) cdbs
 344          */
 345         adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
 346         if (adapter->support_ext_cdb)
 347                 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
 348
 349
 350         return 0;
 351 }
 352
 353 /**
 354  * mega_runpendq()
 355  * @adapter: pointer to our soft state
 356  *
 357  * Runs through the list of pending requests.
 358  */
 359 static inline void
 360 mega_runpendq(adapter_t *adapter)
 361 {
 362         if(!list_empty(&adapter->pending_list))
 363                 __mega_runpendq(adapter);
 364 }
 365
 366 /*
 367  * megaraid_queue()
 368  * @scmd - Issue this scsi command
 369  * @done - the callback hook into the scsi mid-layer
 370  *
 371  * The command queuing entry point for the mid-layer.
 372  */
 373 static int megaraid_queue_lck(struct scsi_cmnd *scmd)
 374 {
 375         adapter_t       *adapter;
 376         scb_t   *scb;
 377         int     busy=0;
 378         unsigned long flags;
 379
 380         adapter = (adapter_t *)scmd->device->host->hostdata;
 381
 382         /*
 383          * Allocate and build a SCB request
 384          * busy flag will be set if mega_build_cmd() command could not
 385          * allocate scb. We will return non-zero status in that case.
 386          * NOTE: scb can be null even though certain commands completed
 387          * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
 388          * return 0 in that case.
 389          */
 390
 391         spin_lock_irqsave(&adapter->lock, flags);
 392         scb = mega_build_cmd(adapter, scmd, &busy);
 393         if (!scb)
 394                 goto out;
 395
 396         scb->state |= SCB_PENDQ;
 397         list_add_tail(&scb->list, &adapter->pending_list);
 398
 399         /*
 400          * Check if the HBA is in quiescent state, e.g., during a
 401          * delete logical drive opertion. If it is, don't run
 402          * the pending_list.
 403          */
 404         if (atomic_read(&adapter->quiescent) == 0)
 405                 mega_runpendq(adapter);
 406
 407         busy = 0;
 408  out:
 409         spin_unlock_irqrestore(&adapter->lock, flags);
 410         return busy;
 411 }
 412
 413 static DEF_SCSI_QCMD(megaraid_queue)
 414
 415 /**
 416  * mega_allocate_scb()
 417  * @adapter: pointer to our soft state
 418  * @cmd: scsi command from the mid-layer
 419  *
 420  * Allocate a SCB structure. This is the central structure for controller
 421  * commands.
 422  */
 423 static inline scb_t *
 424 mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd)
 425 {
 426         struct list_head *head = &adapter->free_list;
 427         scb_t   *scb;
 428
 429         /* Unlink command from Free List */
 430         if( !list_empty(head) ) {
 431
 432                 scb = list_entry(head->next, scb_t, list);
 433
 434                 list_del_init(head->next);
 435
 436                 scb->state = SCB_ACTIVE;
 437                 scb->cmd = cmd;
 438                 scb->dma_type = MEGA_DMA_TYPE_NONE;
 439
 440                 return scb;
 441         }
 442
 443         return NULL;
 444 }
 445
 446 /**
 447  * mega_get_ldrv_num()
 448  * @adapter: pointer to our soft state
 449  * @cmd: scsi mid layer command
 450  * @channel: channel on the controller
 451  *
 452  * Calculate the logical drive number based on the information in scsi command
 453  * and the channel number.
 454  */
 455 static inline int
 456 mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel)
 457 {
 458         int             tgt;
 459         int             ldrv_num;
 460
 461         tgt = cmd->device->id;
 462
 463         if ( tgt > adapter->this_id )
 464                 tgt--;  /* we do not get inquires for initiator id */
 465
 466         ldrv_num = (channel * 15) + tgt;
 467
 468
 469         /*
 470          * If we have a logical drive with boot enabled, project it first
 471          */
 472         if( adapter->boot_ldrv_enabled ) {
 473                 if( ldrv_num == 0 ) {
 474                         ldrv_num = adapter->boot_ldrv;
 475                 }
 476                 else {
 477                         if( ldrv_num <= adapter->boot_ldrv ) {
 478                                 ldrv_num--;
 479                         }
 480                 }
 481         }
 482
 483         /*
 484          * If "delete logical drive" feature is enabled on this controller.
 485          * Do only if at least one delete logical drive operation was done.
 486          *
 487          * Also, after logical drive deletion, instead of logical drive number,
 488          * the value returned should be 0x80+logical drive id.
 489          *
 490          * These is valid only for IO commands.
 491          */
 492
 493         if (adapter->support_random_del && adapter->read_ldidmap )
 494                 switch (cmd->cmnd[0]) {
 495                 case READ_6:
 496                 case WRITE_6:
 497                 case READ_10:
 498                 case WRITE_10:
 499                         ldrv_num += 0x80;
 500                 }
 501
 502         return ldrv_num;
 503 }
 504
 505 /**
 506  * mega_build_cmd()
 507  * @adapter: pointer to our soft state
 508  * @cmd: Prepare using this scsi command
 509  * @busy: busy flag if no resources
 510  *
 511  * Prepares a command and scatter gather list for the controller. This routine
 512  * also finds out if the commands is intended for a logical drive or a
 513  * physical device and prepares the controller command accordingly.
 514  *
 515  * We also re-order the logical drives and physical devices based on their
 516  * boot settings.
 517  */
 518 static scb_t *
 519 mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy)
 520 {
 521         mega_passthru   *pthru;
 522         scb_t   *scb;
 523         mbox_t  *mbox;
 524         u32     seg;
 525         char    islogical;
 526         int     max_ldrv_num;
 527         int     channel = 0;
 528         int     target = 0;
 529         int     ldrv_num = 0;   /* logical drive number */
 530
 531         /*
 532          * We know what channels our logical drives are on - mega_find_card()
 533          */
 534         islogical = adapter->logdrv_chan[cmd->device->channel];
 535
 536         /*
 537          * The theory: If physical drive is chosen for boot, all the physical
 538          * devices are exported before the logical drives, otherwise physical
 539          * devices are pushed after logical drives, in which case - Kernel sees
 540          * the physical devices on virtual channel which is obviously converted
 541          * to actual channel on the HBA.
 542          */
 543         if( adapter->boot_pdrv_enabled ) {
 544                 if( islogical ) {
 545                         /* logical channel */
 546                         channel = cmd->device->channel -
 547                                 adapter->product_info.nchannels;
 548                 }
 549                 else {
 550                         /* this is physical channel */
 551                         channel = cmd->device->channel;
 552                         target = cmd->device->id;
 553
 554                         /*
 555                          * boot from a physical disk, that disk needs to be
 556                          * exposed first IF both the channels are SCSI, then
 557                          * booting from the second channel is not allowed.
 558                          */
 559                         if( target == 0 ) {
 560                                 target = adapter->boot_pdrv_tgt;
 561                         }
 562                         else if( target == adapter->boot_pdrv_tgt ) {
 563                                 target = 0;
 564                         }
 565                 }
 566         }
 567         else {
 568                 if( islogical ) {
 569                         /* this is the logical channel */
 570                         channel = cmd->device->channel;
 571                 }
 572                 else {
 573                         /* physical channel */
 574                         channel = cmd->device->channel - NVIRT_CHAN;
 575                         target = cmd->device->id;
 576                 }
 577         }
 578
 579
 580         if(islogical) {
 581
 582                 /* have just LUN 0 for each target on virtual channels */
 583                 if (cmd->device->lun) {
 584                         cmd->result = (DID_BAD_TARGET << 16);
 585                         scsi_done(cmd);
 586                         return NULL;
 587                 }
 588
 589                 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
 590
 591
 592                 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
 593                         MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
 594
 595                 /*
 596                  * max_ldrv_num increases by 0x80 if some logical drive was
 597                  * deleted.
 598                  */
 599                 if(adapter->read_ldidmap)
 600                         max_ldrv_num += 0x80;
 601
 602                 if(ldrv_num > max_ldrv_num ) {
 603                         cmd->result = (DID_BAD_TARGET << 16);
 604                         scsi_done(cmd);
 605                         return NULL;
 606                 }
 607
 608         }
 609         else {
 610                 if( cmd->device->lun > 7) {
 611                         /*
 612                          * Do not support lun >7 for physically accessed
 613                          * devices
 614                          */
 615                         cmd->result = (DID_BAD_TARGET << 16);
 616                         scsi_done(cmd);
 617                         return NULL;
 618                 }
 619         }
 620
 621         /*
 622          *
 623          * Logical drive commands
 624          *
 625          */
 626         if(islogical) {
 627                 switch (cmd->cmnd[0]) {
 628                 case TEST_UNIT_READY:
 629 #if MEGA_HAVE_CLUSTERING
 630                         /*
 631                          * Do we support clustering and is the support enabled
 632                          * If no, return success always
 633                          */
 634                         if( !adapter->has_cluster ) {
 635                                 cmd->result = (DID_OK << 16);
 636                                 scsi_done(cmd);
 637                                 return NULL;
 638                         }
 639
 640                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 641                                 *busy = 1;
 642                                 return NULL;
 643                         }
 644
 645                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 646                         scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
 647                         scb->raw_mbox[3] = ldrv_num;
 648
 649                         scb->dma_direction = DMA_NONE;
 650
 651                         return scb;
 652 #else
 653                         cmd->result = (DID_OK << 16);
 654                         scsi_done(cmd);
 655                         return NULL;
 656 #endif
 657
 658                 case MODE_SENSE: {
 659                         char *buf;
 660                         struct scatterlist *sg;
 661
 662                         sg = scsi_sglist(cmd);
 663                         buf = kmap_atomic(sg_page(sg)) + sg->offset;
 664
 665                         memset(buf, 0, cmd->cmnd[4]);
 666                         kunmap_atomic(buf - sg->offset);
 667
 668                         cmd->result = (DID_OK << 16);
 669                         scsi_done(cmd);
 670                         return NULL;
 671                 }
 672
 673                 case READ_CAPACITY:
 674                 case INQUIRY:
 675
 676                         if(!(adapter->flag & (1L << cmd->device->channel))) {
 677
 678                                 dev_notice(&adapter->dev->dev,
 679                                         "scsi%d: scanning scsi channel %d "
 680                                         "for logical drives\n",
 681                                                 adapter->host->host_no,
 682                                                 cmd->device->channel);
 683
 684                                 adapter->flag |= (1L << cmd->device->channel);
 685                         }
 686
 687                         /* Allocate a SCB and initialize passthru */
 688                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 689                                 *busy = 1;
 690                                 return NULL;
 691                         }
 692                         pthru = scb->pthru;
 693
 694                         mbox = (mbox_t *)scb->raw_mbox;
 695                         memset(mbox, 0, sizeof(scb->raw_mbox));
 696                         memset(pthru, 0, sizeof(mega_passthru));
 697
 698                         pthru->timeout = 0;
 699                         pthru->ars = 1;
 700                         pthru->reqsenselen = 14;
 701                         pthru->islogical = 1;
 702                         pthru->logdrv = ldrv_num;
 703                         pthru->cdblen = cmd->cmd_len;
 704                         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 705
 706                         if( adapter->has_64bit_addr ) {
 707                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 708                         }
 709                         else {
 710                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 711                         }
 712
 713                         scb->dma_direction = DMA_FROM_DEVICE;
 714
 715                         pthru->numsgelements = mega_build_sglist(adapter, scb,
 716                                 &pthru->dataxferaddr, &pthru->dataxferlen);
 717
 718                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 719
 720                         return scb;
 721
 722                 case READ_6:
 723                 case WRITE_6:
 724                 case READ_10:
 725                 case WRITE_10:
 726                 case READ_12:
 727                 case WRITE_12:
 728
 729                         /* Allocate a SCB and initialize mailbox */
 730                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 731                                 *busy = 1;
 732                                 return NULL;
 733                         }
 734                         mbox = (mbox_t *)scb->raw_mbox;
 735
 736                         memset(mbox, 0, sizeof(scb->raw_mbox));
 737                         mbox->m_out.logdrv = ldrv_num;
 738
 739                         /*
 740                          * A little hack: 2nd bit is zero for all scsi read
 741                          * commands and is set for all scsi write commands
 742                          */
 743                         if( adapter->has_64bit_addr ) {
 744                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 745                                         MEGA_MBOXCMD_LWRITE64:
 746                                         MEGA_MBOXCMD_LREAD64 ;
 747                         }
 748                         else {
 749                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 750                                         MEGA_MBOXCMD_LWRITE:
 751                                         MEGA_MBOXCMD_LREAD ;
 752                         }
 753
 754                         /*
 755                          * 6-byte READ(0x08) or WRITE(0x0A) cdb
 756                          */
 757                         if( cmd->cmd_len == 6 ) {
 758                                 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
 759                                 mbox->m_out.lba =
 760                                         ((u32)cmd->cmnd[1] << 16) |
 761                                         ((u32)cmd->cmnd[2] << 8) |
 762                                         (u32)cmd->cmnd[3];
 763
 764                                 mbox->m_out.lba &= 0x1FFFFF;
 765
 766 #if MEGA_HAVE_STATS
 767                                 /*
 768                                  * Take modulo 0x80, since the logical drive
 769                                  * number increases by 0x80 when a logical
 770                                  * drive was deleted
 771                                  */
 772                                 if (*cmd->cmnd == READ_6) {
 773                                         adapter->nreads[ldrv_num%0x80]++;
 774                                         adapter->nreadblocks[ldrv_num%0x80] +=
 775                                                 mbox->m_out.numsectors;
 776                                 } else {
 777                                         adapter->nwrites[ldrv_num%0x80]++;
 778                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 779                                                 mbox->m_out.numsectors;
 780                                 }
 781 #endif
 782                         }
 783
 784                         /*
 785                          * 10-byte READ(0x28) or WRITE(0x2A) cdb
 786                          */
 787                         if( cmd->cmd_len == 10 ) {
 788                                 mbox->m_out.numsectors =
 789                                         (u32)cmd->cmnd[8] |
 790                                         ((u32)cmd->cmnd[7] << 8);
 791                                 mbox->m_out.lba =
 792                                         ((u32)cmd->cmnd[2] << 24) |
 793                                         ((u32)cmd->cmnd[3] << 16) |
 794                                         ((u32)cmd->cmnd[4] << 8) |
 795                                         (u32)cmd->cmnd[5];
 796
 797 #if MEGA_HAVE_STATS
 798                                 if (*cmd->cmnd == READ_10) {
 799                                         adapter->nreads[ldrv_num%0x80]++;
 800                                         adapter->nreadblocks[ldrv_num%0x80] +=
 801                                                 mbox->m_out.numsectors;
 802                                 } else {
 803                                         adapter->nwrites[ldrv_num%0x80]++;
 804                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 805                                                 mbox->m_out.numsectors;
 806                                 }
 807 #endif
 808                         }
 809
 810                         /*
 811                          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
 812                          */
 813                         if( cmd->cmd_len == 12 ) {
 814                                 mbox->m_out.lba =
 815                                         ((u32)cmd->cmnd[2] << 24) |
 816                                         ((u32)cmd->cmnd[3] << 16) |
 817                                         ((u32)cmd->cmnd[4] << 8) |
 818                                         (u32)cmd->cmnd[5];
 819
 820                                 mbox->m_out.numsectors =
 821                                         ((u32)cmd->cmnd[6] << 24) |
 822                                         ((u32)cmd->cmnd[7] << 16) |
 823                                         ((u32)cmd->cmnd[8] << 8) |
 824                                         (u32)cmd->cmnd[9];
 825
 826 #if MEGA_HAVE_STATS
 827                                 if (*cmd->cmnd == READ_12) {
 828                                         adapter->nreads[ldrv_num%0x80]++;
 829                                         adapter->nreadblocks[ldrv_num%0x80] +=
 830                                                 mbox->m_out.numsectors;
 831                                 } else {
 832                                         adapter->nwrites[ldrv_num%0x80]++;
 833                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 834                                                 mbox->m_out.numsectors;
 835                                 }
 836 #endif
 837                         }
 838
 839                         /*
 840                          * If it is a read command
 841                          */
 842                         if( (*cmd->cmnd & 0x0F) == 0x08 ) {
 843                                 scb->dma_direction = DMA_FROM_DEVICE;
 844                         }
 845                         else {
 846                                 scb->dma_direction = DMA_TO_DEVICE;
 847                         }
 848
 849                         /* Calculate Scatter-Gather info */
 850                         mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
 851                                         (u32 *)&mbox->m_out.xferaddr, &seg);
 852
 853                         return scb;
 854
 855 #if MEGA_HAVE_CLUSTERING
 856                 case RESERVE:
 857                 case RELEASE:
 858
 859                         /*
 860                          * Do we support clustering and is the support enabled
 861                          */
 862                         if( ! adapter->has_cluster ) {
 863
 864                                 cmd->result = (DID_BAD_TARGET << 16);
 865                                 scsi_done(cmd);
 866                                 return NULL;
 867                         }
 868
 869                         /* Allocate a SCB and initialize mailbox */
 870                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 871                                 *busy = 1;
 872                                 return NULL;
 873                         }
 874
 875                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 876                         scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
 877                                 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
 878
 879                         scb->raw_mbox[3] = ldrv_num;
 880
 881                         scb->dma_direction = DMA_NONE;
 882
 883                         return scb;
 884 #endif
 885
 886                 default:
 887                         cmd->result = (DID_BAD_TARGET << 16);
 888                         scsi_done(cmd);
 889                         return NULL;
 890                 }
 891         }
 892
 893         /*
 894          * Passthru drive commands
 895          */
 896         else {
 897                 /* Allocate a SCB and initialize passthru */
 898                 if(!(scb = mega_allocate_scb(adapter, cmd))) {
 899                         *busy = 1;
 900                         return NULL;
 901                 }
 902
 903                 mbox = (mbox_t *)scb->raw_mbox;
 904                 memset(mbox, 0, sizeof(scb->raw_mbox));
 905
 906                 if( adapter->support_ext_cdb ) {
 907
 908                         mega_prepare_extpassthru(adapter, scb, cmd,
 909                                         channel, target);
 910
 911                         mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
 912
 913                         mbox->m_out.xferaddr = scb->epthru_dma_addr;
 914
 915                 }
 916                 else {
 917
 918                         pthru = mega_prepare_passthru(adapter, scb, cmd,
 919                                         channel, target);
 920
 921                         /* Initialize mailbox */
 922                         if( adapter->has_64bit_addr ) {
 923                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 924                         }
 925                         else {
 926                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 927                         }
 928
 929                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 930
 931                 }
 932                 return scb;
 933         }
 934         return NULL;
 935 }
 936
 937
 938 /**
 939  * mega_prepare_passthru()
 940  * @adapter: pointer to our soft state
 941  * @scb: our scsi control block
 942  * @cmd: scsi command from the mid-layer
 943  * @channel: actual channel on the controller
 944  * @target: actual id on the controller.
 945  *
 946  * prepare a command for the scsi physical devices.
 947  */
 948 static mega_passthru *
 949 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,
 950                       int channel, int target)
 951 {
 952         mega_passthru *pthru;
 953
 954         pthru = scb->pthru;
 955         memset(pthru, 0, sizeof (mega_passthru));
 956
 957         /* 0=6sec/1=60sec/2=10min/3=3hrs */
 958         pthru->timeout = 2;
 959
 960         pthru->ars = 1;
 961         pthru->reqsenselen = 14;
 962         pthru->islogical = 0;
 963
 964         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
 965
 966         pthru->target = (adapter->flag & BOARD_40LD) ?
 967                 (channel << 4) | target : target;
 968
 969         pthru->cdblen = cmd->cmd_len;
 970         pthru->logdrv = cmd->device->lun;
 971
 972         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 973
 974         /* Not sure about the direction */
 975         scb->dma_direction = DMA_BIDIRECTIONAL;
 976
 977         /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
 978         switch (cmd->cmnd[0]) {
 979         case INQUIRY:
 980         case READ_CAPACITY:
 981                 if(!(adapter->flag & (1L << cmd->device->channel))) {
 982
 983                         dev_notice(&adapter->dev->dev,
 984                                 "scsi%d: scanning scsi channel %d [P%d] "
 985                                 "for physical devices\n",
 986                                         adapter->host->host_no,
 987                                         cmd->device->channel, channel);
 988
 989                         adapter->flag |= (1L << cmd->device->channel);
 990                 }
 991                 fallthrough;
 992         default:
 993                 pthru->numsgelements = mega_build_sglist(adapter, scb,
 994                                 &pthru->dataxferaddr, &pthru->dataxferlen);
 995                 break;
 996         }
 997         return pthru;
 998 }
 999
1000
1001 /**
1002  * mega_prepare_extpassthru()
1003  * @adapter: pointer to our soft state
1004  * @scb: our scsi control block
1005  * @cmd: scsi command from the mid-layer
1006  * @channel: actual channel on the controller
1007  * @target: actual id on the controller.
1008  *
1009  * prepare a command for the scsi physical devices. This rountine prepares
1010  * commands for devices which can take extended CDBs (>10 bytes)
1011  */
1012 static mega_ext_passthru *
1013 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,
1014                          struct scsi_cmnd *cmd,
1015                          int channel, int target)
1016 {
1017         mega_ext_passthru       *epthru;
1018
1019         epthru = scb->epthru;
1020         memset(epthru, 0, sizeof(mega_ext_passthru));
1021
1022         /* 0=6sec/1=60sec/2=10min/3=3hrs */
1023         epthru->timeout = 2;
1024
1025         epthru->ars = 1;
1026         epthru->reqsenselen = 14;
1027         epthru->islogical = 0;
1028
1029         epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1030         epthru->target = (adapter->flag & BOARD_40LD) ?
1031                 (channel << 4) | target : target;
1032
1033         epthru->cdblen = cmd->cmd_len;
1034         epthru->logdrv = cmd->device->lun;
1035
1036         memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1037
1038         /* Not sure about the direction */
1039         scb->dma_direction = DMA_BIDIRECTIONAL;
1040
1041         switch(cmd->cmnd[0]) {
1042         case INQUIRY:
1043         case READ_CAPACITY:
1044                 if(!(adapter->flag & (1L << cmd->device->channel))) {
1045
1046                         dev_notice(&adapter->dev->dev,
1047                                 "scsi%d: scanning scsi channel %d [P%d] "
1048                                 "for physical devices\n",
1049                                         adapter->host->host_no,
1050                                         cmd->device->channel, channel);
1051
1052                         adapter->flag |= (1L << cmd->device->channel);
1053                 }
1054                 fallthrough;
1055         default:
1056                 epthru->numsgelements = mega_build_sglist(adapter, scb,
1057                                 &epthru->dataxferaddr, &epthru->dataxferlen);
1058                 break;
1059         }
1060
1061         return epthru;
1062 }
1063
1064 static void
1065 __mega_runpendq(adapter_t *adapter)
1066 {
1067         scb_t *scb;
1068         struct list_head *pos, *next;
1069
1070         /* Issue any pending commands to the card */
1071         list_for_each_safe(pos, next, &adapter->pending_list) {
1072
1073                 scb = list_entry(pos, scb_t, list);
1074
1075                 if( !(scb->state & SCB_ISSUED) ) {
1076
1077                         if( issue_scb(adapter, scb) != 0 )
1078                                 return;
1079                 }
1080         }
1081
1082         return;
1083 }
1084
1085
1086 /**
1087  * issue_scb()
1088  * @adapter: pointer to our soft state
1089  * @scb: scsi control block
1090  *
1091  * Post a command to the card if the mailbox is available, otherwise return
1092  * busy. We also take the scb from the pending list if the mailbox is
1093  * available.
1094  */
1095 static int
1096 issue_scb(adapter_t *adapter, scb_t *scb)
1097 {
1098         volatile mbox64_t       *mbox64 = adapter->mbox64;
1099         volatile mbox_t         *mbox = adapter->mbox;
1100         unsigned int    i = 0;
1101
1102         if(unlikely(mbox->m_in.busy)) {
1103                 do {
1104                         udelay(1);
1105                         i++;
1106                 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1107
1108                 if(mbox->m_in.busy) return -1;
1109         }
1110
1111         /* Copy mailbox data into host structure */
1112         memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1113                         sizeof(struct mbox_out));
1114
1115         mbox->m_out.cmdid = scb->idx;   /* Set cmdid */
1116         mbox->m_in.busy = 1;            /* Set busy */
1117
1118
1119         /*
1120          * Increment the pending queue counter
1121          */
1122         atomic_inc(&adapter->pend_cmds);
1123
1124         switch (mbox->m_out.cmd) {
1125         case MEGA_MBOXCMD_LREAD64:
1126         case MEGA_MBOXCMD_LWRITE64:
1127         case MEGA_MBOXCMD_PASSTHRU64:
1128         case MEGA_MBOXCMD_EXTPTHRU:
1129                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1130                 mbox64->xfer_segment_hi = 0;
1131                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1132                 break;
1133         default:
1134                 mbox64->xfer_segment_lo = 0;
1135                 mbox64->xfer_segment_hi = 0;
1136         }
1137
1138         /*
1139          * post the command
1140          */
1141         scb->state |= SCB_ISSUED;
1142
1143         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1144                 mbox->m_in.poll = 0;
1145                 mbox->m_in.ack = 0;
1146                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1147         }
1148         else {
1149                 irq_enable(adapter);
1150                 issue_command(adapter);
1151         }
1152
1153         return 0;
1154 }
1155
1156 /*
1157  * Wait until the controller's mailbox is available
1158  */
1159 static inline int
1160 mega_busywait_mbox (adapter_t *adapter)
1161 {
1162         if (adapter->mbox->m_in.busy)
1163                 return __mega_busywait_mbox(adapter);
1164         return 0;
1165 }
1166
1167 /**
1168  * issue_scb_block()
1169  * @adapter: pointer to our soft state
1170  * @raw_mbox: the mailbox
1171  *
1172  * Issue a scb in synchronous and non-interrupt mode
1173  */
1174 static int
1175 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1176 {
1177         volatile mbox64_t *mbox64 = adapter->mbox64;
1178         volatile mbox_t *mbox = adapter->mbox;
1179         u8      byte;
1180
1181         /* Wait until mailbox is free */
1182         if(mega_busywait_mbox (adapter))
1183                 goto bug_blocked_mailbox;
1184
1185         /* Copy mailbox data into host structure */
1186         memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1187         mbox->m_out.cmdid = 0xFE;
1188         mbox->m_in.busy = 1;
1189
1190         switch (raw_mbox[0]) {
1191         case MEGA_MBOXCMD_LREAD64:
1192         case MEGA_MBOXCMD_LWRITE64:
1193         case MEGA_MBOXCMD_PASSTHRU64:
1194         case MEGA_MBOXCMD_EXTPTHRU:
1195                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1196                 mbox64->xfer_segment_hi = 0;
1197                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1198                 break;
1199         default:
1200                 mbox64->xfer_segment_lo = 0;
1201                 mbox64->xfer_segment_hi = 0;
1202         }
1203
1204         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1205                 mbox->m_in.poll = 0;
1206                 mbox->m_in.ack = 0;
1207                 mbox->m_in.numstatus = 0xFF;
1208                 mbox->m_in.status = 0xFF;
1209                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1210
1211                 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1212                         cpu_relax();
1213
1214                 mbox->m_in.numstatus = 0xFF;
1215
1216                 while( (volatile u8)mbox->m_in.poll != 0x77 )
1217                         cpu_relax();
1218
1219                 mbox->m_in.poll = 0;
1220                 mbox->m_in.ack = 0x77;
1221
1222                 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1223
1224                 while(RDINDOOR(adapter) & 0x2)
1225                         cpu_relax();
1226         }
1227         else {
1228                 irq_disable(adapter);
1229                 issue_command(adapter);
1230
1231                 while (!((byte = irq_state(adapter)) & INTR_VALID))
1232                         cpu_relax();
1233
1234                 set_irq_state(adapter, byte);
1235                 irq_enable(adapter);
1236                 irq_ack(adapter);
1237         }
1238
1239         return mbox->m_in.status;
1240
1241 bug_blocked_mailbox:
1242         dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1243         udelay (1000);
1244         return -1;
1245 }
1246
1247
1248 /**
1249  * megaraid_isr_iomapped()
1250  * @irq: irq
1251  * @devp: pointer to our soft state
1252  *
1253  * Interrupt service routine for io-mapped controllers.
1254  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1255  * and service the completed commands.
1256  */
1257 static irqreturn_t
1258 megaraid_isr_iomapped(int irq, void *devp)
1259 {
1260         adapter_t       *adapter = devp;
1261         unsigned long   flags;
1262         u8      status;
1263         u8      nstatus;
1264         u8      completed[MAX_FIRMWARE_STATUS];
1265         u8      byte;
1266         int     handled = 0;
1267
1268
1269         /*
1270          * loop till F/W has more commands for us to complete.
1271          */
1272         spin_lock_irqsave(&adapter->lock, flags);
1273
1274         do {
1275                 /* Check if a valid interrupt is pending */
1276                 byte = irq_state(adapter);
1277                 if( (byte & VALID_INTR_BYTE) == 0 ) {
1278                         /*
1279                          * No more pending commands
1280                          */
1281                         goto out_unlock;
1282                 }
1283                 set_irq_state(adapter, byte);
1284
1285                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1286                                 == 0xFF)
1287                         cpu_relax();
1288                 adapter->mbox->m_in.numstatus = 0xFF;
1289
1290                 status = adapter->mbox->m_in.status;
1291
1292                 /*
1293                  * decrement the pending queue counter
1294                  */
1295                 atomic_sub(nstatus, &adapter->pend_cmds);
1296
1297                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1298                                 nstatus);
1299
1300                 /* Acknowledge interrupt */
1301                 irq_ack(adapter);
1302
1303                 mega_cmd_done(adapter, completed, nstatus, status);
1304
1305                 mega_rundoneq(adapter);
1306
1307                 handled = 1;
1308
1309                 /* Loop through any pending requests */
1310                 if(atomic_read(&adapter->quiescent) == 0) {
1311                         mega_runpendq(adapter);
1312                 }
1313
1314         } while(1);
1315
1316  out_unlock:
1317
1318         spin_unlock_irqrestore(&adapter->lock, flags);
1319
1320         return IRQ_RETVAL(handled);
1321 }
1322
1323
1324 /**
1325  * megaraid_isr_memmapped()
1326  * @irq: irq
1327  * @devp: pointer to our soft state
1328  *
1329  * Interrupt service routine for memory-mapped controllers.
1330  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1331  * and service the completed commands.
1332  */
1333 static irqreturn_t
1334 megaraid_isr_memmapped(int irq, void *devp)
1335 {
1336         adapter_t       *adapter = devp;
1337         unsigned long   flags;
1338         u8      status;
1339         u32     dword = 0;
1340         u8      nstatus;
1341         u8      completed[MAX_FIRMWARE_STATUS];
1342         int     handled = 0;
1343
1344
1345         /*
1346          * loop till F/W has more commands for us to complete.
1347          */
1348         spin_lock_irqsave(&adapter->lock, flags);
1349
1350         do {
1351                 /* Check if a valid interrupt is pending */
1352                 dword = RDOUTDOOR(adapter);
1353                 if(dword != 0x10001234) {
1354                         /*
1355                          * No more pending commands
1356                          */
1357                         goto out_unlock;
1358                 }
1359                 WROUTDOOR(adapter, 0x10001234);
1360
1361                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1362                                 == 0xFF) {
1363                         cpu_relax();
1364                 }
1365                 adapter->mbox->m_in.numstatus = 0xFF;
1366
1367                 status = adapter->mbox->m_in.status;
1368
1369                 /*
1370                  * decrement the pending queue counter
1371                  */
1372                 atomic_sub(nstatus, &adapter->pend_cmds);
1373
1374                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1375                                 nstatus);
1376
1377                 /* Acknowledge interrupt */
1378                 WRINDOOR(adapter, 0x2);
1379
1380                 handled = 1;
1381
1382                 while( RDINDOOR(adapter) & 0x02 )
1383                         cpu_relax();
1384
1385                 mega_cmd_done(adapter, completed, nstatus, status);
1386
1387                 mega_rundoneq(adapter);
1388
1389                 /* Loop through any pending requests */
1390                 if(atomic_read(&adapter->quiescent) == 0) {
1391                         mega_runpendq(adapter);
1392                 }
1393
1394         } while(1);
1395
1396  out_unlock:
1397
1398         spin_unlock_irqrestore(&adapter->lock, flags);
1399
1400         return IRQ_RETVAL(handled);
1401 }
1402 /**
1403  * mega_cmd_done()
1404  * @adapter: pointer to our soft state
1405  * @completed: array of ids of completed commands
1406  * @nstatus: number of completed commands
1407  * @status: status of the last command completed
1408  *
1409  * Complete the commands and call the scsi mid-layer callback hooks.
1410  */
1411 static void
1412 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1413 {
1414         mega_ext_passthru       *epthru = NULL;
1415         struct scatterlist      *sgl;
1416         struct scsi_cmnd        *cmd = NULL;
1417         mega_passthru   *pthru = NULL;
1418         mbox_t  *mbox = NULL;
1419         u8      c;
1420         scb_t   *scb;
1421         int     islogical;
1422         int     cmdid;
1423         int     i;
1424
1425         /*
1426          * for all the commands completed, call the mid-layer callback routine
1427          * and free the scb.
1428          */
1429         for( i = 0; i < nstatus; i++ ) {
1430
1431                 cmdid = completed[i];
1432
1433                 /*
1434                  * Only free SCBs for the commands coming down from the
1435                  * mid-layer, not for which were issued internally
1436                  *
1437                  * For internal command, restore the status returned by the
1438                  * firmware so that user can interpret it.
1439                  */
1440                 if (cmdid == CMDID_INT_CMDS) {
1441                         scb = &adapter->int_scb;
1442
1443                         list_del_init(&scb->list);
1444                         scb->state = SCB_FREE;
1445
1446                         adapter->int_status = status;
1447                         complete(&adapter->int_waitq);
1448                 } else {
1449                         scb = &adapter->scb_list[cmdid];
1450
1451                         /*
1452                          * Make sure f/w has completed a valid command
1453                          */
1454                         if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1455                                 dev_crit(&adapter->dev->dev, "invalid command "
1456                                         "Id %d, scb->state:%x, scsi cmd:%p\n",
1457                                         cmdid, scb->state, scb->cmd);
1458
1459                                 continue;
1460                         }
1461
1462                         /*
1463                          * Was a abort issued for this command
1464                          */
1465                         if( scb->state & SCB_ABORT ) {
1466
1467                                 dev_warn(&adapter->dev->dev,
1468                                         "aborted cmd [%x] complete\n",
1469                                         scb->idx);
1470
1471                                 scb->cmd->result = (DID_ABORT << 16);
1472
1473                                 list_add_tail(SCSI_LIST(scb->cmd),
1474                                                 &adapter->completed_list);
1475
1476                                 mega_free_scb(adapter, scb);
1477
1478                                 continue;
1479                         }
1480
1481                         /*
1482                          * Was a reset issued for this command
1483                          */
1484                         if( scb->state & SCB_RESET ) {
1485
1486                                 dev_warn(&adapter->dev->dev,
1487                                         "reset cmd [%x] complete\n",
1488                                         scb->idx);
1489
1490                                 scb->cmd->result = (DID_RESET << 16);
1491
1492                                 list_add_tail(SCSI_LIST(scb->cmd),
1493                                                 &adapter->completed_list);
1494
1495                                 mega_free_scb (adapter, scb);
1496
1497                                 continue;
1498                         }
1499
1500                         cmd = scb->cmd;
1501                         pthru = scb->pthru;
1502                         epthru = scb->epthru;
1503                         mbox = (mbox_t *)scb->raw_mbox;
1504
1505 #if MEGA_HAVE_STATS
1506                         {
1507
1508                         int     logdrv = mbox->m_out.logdrv;
1509
1510                         islogical = adapter->logdrv_chan[cmd->channel];
1511                         /*
1512                          * Maintain an error counter for the logical drive.
1513                          * Some application like SNMP agent need such
1514                          * statistics
1515                          */
1516                         if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1517                                                 cmd->cmnd[0] == READ_10 ||
1518                                                 cmd->cmnd[0] == READ_12)) {
1519                                 /*
1520                                  * Logical drive number increases by 0x80 when
1521                                  * a logical drive is deleted
1522                                  */
1523                                 adapter->rd_errors[logdrv%0x80]++;
1524                         }
1525
1526                         if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1527                                                 cmd->cmnd[0] == WRITE_10 ||
1528                                                 cmd->cmnd[0] == WRITE_12)) {
1529                                 /*
1530                                  * Logical drive number increases by 0x80 when
1531                                  * a logical drive is deleted
1532                                  */
1533                                 adapter->wr_errors[logdrv%0x80]++;
1534                         }
1535
1536                         }
1537 #endif
1538                 }
1539
1540                 /*
1541                  * Do not return the presence of hard disk on the channel so,
1542                  * inquiry sent, and returned data==hard disk or removable
1543                  * hard disk and not logical, request should return failure! -
1544                  * PJ
1545                  */
1546                 islogical = adapter->logdrv_chan[cmd->device->channel];
1547                 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1548
1549                         sgl = scsi_sglist(cmd);
1550                         if( sg_page(sgl) ) {
1551                                 c = *(unsigned char *) sg_virt(&sgl[0]);
1552                         } else {
1553                                 dev_warn(&adapter->dev->dev, "invalid sg\n");
1554                                 c = 0;
1555                         }
1556
1557                         if(IS_RAID_CH(adapter, cmd->device->channel) &&
1558                                         ((c & 0x1F ) == TYPE_DISK)) {
1559                                 status = 0xF0;
1560                         }
1561                 }
1562
1563                 /* clear result; otherwise, success returns corrupt value */
1564                 cmd->result = 0;
1565
1566                 /* Convert MegaRAID status to Linux error code */
1567                 switch (status) {
1568                 case 0x00:      /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1569                         cmd->result |= (DID_OK << 16);
1570                         break;
1571
1572                 case 0x02:      /* ERROR_ABORTED, i.e.
1573                                    SCSI_STATUS_CHECK_CONDITION */
1574
1575                         /* set sense_buffer and result fields */
1576                         if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1577                                 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1578
1579                                 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1580                                                 14);
1581
1582                                 cmd->result = SAM_STAT_CHECK_CONDITION;
1583                         }
1584                         else {
1585                                 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1586
1587                                         memcpy(cmd->sense_buffer,
1588                                                 epthru->reqsensearea, 14);
1589
1590                                         cmd->result = SAM_STAT_CHECK_CONDITION;
1591                                 } else
1592                                         scsi_build_sense(cmd, 0,
1593                                                          ABORTED_COMMAND, 0, 0);
1594                         }
1595                         break;
1596
1597                 case 0x08:      /* ERR_DEST_DRIVE_FAILED, i.e.
1598                                    SCSI_STATUS_BUSY */
1599                         cmd->result |= (DID_BUS_BUSY << 16) | status;
1600                         break;
1601
1602                 default:
1603 #if MEGA_HAVE_CLUSTERING
1604                         /*
1605                          * If TEST_UNIT_READY fails, we know
1606                          * MEGA_RESERVATION_STATUS failed
1607                          */
1608                         if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1609                                 cmd->result |= (DID_ERROR << 16) |
1610                                         SAM_STAT_RESERVATION_CONFLICT;
1611                         }
1612                         else
1613                         /*
1614                          * Error code returned is 1 if Reserve or Release
1615                          * failed or the input parameter is invalid
1616                          */
1617                         if( status == 1 &&
1618                                 (cmd->cmnd[0] == RESERVE ||
1619                                          cmd->cmnd[0] == RELEASE) ) {
1620
1621                                 cmd->result |= (DID_ERROR << 16) |
1622                                         SAM_STAT_RESERVATION_CONFLICT;
1623                         }
1624                         else
1625 #endif
1626                                 cmd->result |= (DID_BAD_TARGET << 16)|status;
1627                 }
1628
1629                 mega_free_scb(adapter, scb);
1630
1631                 /* Add Scsi_Command to end of completed queue */
1632                 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1633         }
1634 }
1635
1636
1637 /*
1638  * mega_runpendq()
1639  *
1640  * Run through the list of completed requests and finish it
1641  */
1642 static void
1643 mega_rundoneq (adapter_t *adapter)
1644 {
1645         struct scsi_cmnd *cmd;
1646         struct list_head *pos;
1647
1648         list_for_each(pos, &adapter->completed_list) {
1649
1650                 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1651
1652                 cmd = list_entry(spos, struct scsi_cmnd, SCp);
1653                 scsi_done(cmd);
1654         }
1655
1656         INIT_LIST_HEAD(&adapter->completed_list);
1657 }
1658
1659
1660 /*
1661  * Free a SCB structure
1662  * Note: We assume the scsi commands associated with this scb is not free yet.
1663  */
1664 static void
1665 mega_free_scb(adapter_t *adapter, scb_t *scb)
1666 {
1667         switch( scb->dma_type ) {
1668
1669         case MEGA_DMA_TYPE_NONE:
1670                 break;
1671
1672         case MEGA_SGLIST:
1673                 scsi_dma_unmap(scb->cmd);
1674                 break;
1675         default:
1676                 break;
1677         }
1678
1679         /*
1680          * Remove from the pending list
1681          */
1682         list_del_init(&scb->list);
1683
1684         /* Link the scb back into free list */
1685         scb->state = SCB_FREE;
1686         scb->cmd = NULL;
1687
1688         list_add(&scb->list, &adapter->free_list);
1689 }
1690
1691
1692 static int
1693 __mega_busywait_mbox (adapter_t *adapter)
1694 {
1695         volatile mbox_t *mbox = adapter->mbox;
1696         long counter;
1697
1698         for (counter = 0; counter < 10000; counter++) {
1699                 if (!mbox->m_in.busy)
1700                         return 0;
1701                 udelay(100);
1702                 cond_resched();
1703         }
1704         return -1;              /* give up after 1 second */
1705 }
1706
1707 /*
1708  * Copies data to SGLIST
1709  * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1710  */
1711 static int
1712 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1713 {
1714         struct scatterlist *sg;
1715         struct scsi_cmnd        *cmd;
1716         int     sgcnt;
1717         int     idx;
1718
1719         cmd = scb->cmd;
1720
1721         /*
1722          * Copy Scatter-Gather list info into controller structure.
1723          *
1724          * The number of sg elements returned must not exceed our limit
1725          */
1726         sgcnt = scsi_dma_map(cmd);
1727
1728         scb->dma_type = MEGA_SGLIST;
1729
1730         BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1731
1732         *len = 0;
1733
1734         if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1735                 sg = scsi_sglist(cmd);
1736                 scb->dma_h_bulkdata = sg_dma_address(sg);
1737                 *buf = (u32)scb->dma_h_bulkdata;
1738                 *len = sg_dma_len(sg);
1739                 return 0;
1740         }
1741
1742         scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1743                 if (adapter->has_64bit_addr) {
1744                         scb->sgl64[idx].address = sg_dma_address(sg);
1745                         *len += scb->sgl64[idx].length = sg_dma_len(sg);
1746                 } else {
1747                         scb->sgl[idx].address = sg_dma_address(sg);
1748                         *len += scb->sgl[idx].length = sg_dma_len(sg);
1749                 }
1750         }
1751
1752         /* Reset pointer and length fields */
1753         *buf = scb->sgl_dma_addr;
1754
1755         /* Return count of SG requests */
1756         return sgcnt;
1757 }
1758
1759
1760 /*
1761  * mega_8_to_40ld()
1762  *
1763  * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1764  * Enquiry3 structures for later use
1765  */
1766 static void
1767 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1768                 mega_product_info *product_info)
1769 {
1770         int i;
1771
1772         product_info->max_commands = inquiry->adapter_info.max_commands;
1773         enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1774         product_info->nchannels = inquiry->adapter_info.nchannels;
1775
1776         for (i = 0; i < 4; i++) {
1777                 product_info->fw_version[i] =
1778                         inquiry->adapter_info.fw_version[i];
1779
1780                 product_info->bios_version[i] =
1781                         inquiry->adapter_info.bios_version[i];
1782         }
1783         enquiry3->cache_flush_interval =
1784                 inquiry->adapter_info.cache_flush_interval;
1785
1786         product_info->dram_size = inquiry->adapter_info.dram_size;
1787
1788         enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1789
1790         for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1791                 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1792                 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1793                 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1794         }
1795
1796         for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1797                 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1798 }
1799
1800 static inline void
1801 mega_free_sgl(adapter_t *adapter)
1802 {
1803         scb_t   *scb;
1804         int     i;
1805
1806         for(i = 0; i < adapter->max_cmds; i++) {
1807
1808                 scb = &adapter->scb_list[i];
1809
1810                 if( scb->sgl64 ) {
1811                         dma_free_coherent(&adapter->dev->dev,
1812                                           sizeof(mega_sgl64) * adapter->sglen,
1813                                           scb->sgl64, scb->sgl_dma_addr);
1814
1815                         scb->sgl64 = NULL;
1816                 }
1817
1818                 if( scb->pthru ) {
1819                         dma_free_coherent(&adapter->dev->dev,
1820                                           sizeof(mega_passthru), scb->pthru,
1821                                           scb->pthru_dma_addr);
1822
1823                         scb->pthru = NULL;
1824                 }
1825
1826                 if( scb->epthru ) {
1827                         dma_free_coherent(&adapter->dev->dev,
1828                                           sizeof(mega_ext_passthru),
1829                                           scb->epthru, scb->epthru_dma_addr);
1830
1831                         scb->epthru = NULL;
1832                 }
1833
1834         }
1835 }
1836
1837
1838 /*
1839  * Get information about the card/driver
1840  */
1841 const char *
1842 megaraid_info(struct Scsi_Host *host)
1843 {
1844         static char buffer[512];
1845         adapter_t *adapter;
1846
1847         adapter = (adapter_t *)host->hostdata;
1848
1849         sprintf (buffer,
1850                  "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1851                  adapter->fw_version, adapter->product_info.max_commands,
1852                  adapter->host->max_id, adapter->host->max_channel,
1853                  (u32)adapter->host->max_lun);
1854         return buffer;
1855 }
1856
1857 /*
1858  * Abort a previous SCSI request. Only commands on the pending list can be
1859  * aborted. All the commands issued to the F/W must complete.
1860  */
1861 static int
1862 megaraid_abort(struct scsi_cmnd *cmd)
1863 {
1864         adapter_t       *adapter;
1865         int             rval;
1866
1867         adapter = (adapter_t *)cmd->device->host->hostdata;
1868
1869         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1870
1871         /*
1872          * This is required here to complete any completed requests
1873          * to be communicated over to the mid layer.
1874          */
1875         mega_rundoneq(adapter);
1876
1877         return rval;
1878 }
1879
1880
1881 static int
1882 megaraid_reset(struct scsi_cmnd *cmd)
1883 {
1884         adapter_t       *adapter;
1885         megacmd_t       mc;
1886         int             rval;
1887
1888         adapter = (adapter_t *)cmd->device->host->hostdata;
1889
1890 #if MEGA_HAVE_CLUSTERING
1891         mc.cmd = MEGA_CLUSTER_CMD;
1892         mc.opcode = MEGA_RESET_RESERVATIONS;
1893
1894         if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1895                 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1896         }
1897         else {
1898                 dev_info(&adapter->dev->dev, "reservation reset\n");
1899         }
1900 #endif
1901
1902         spin_lock_irq(&adapter->lock);
1903
1904         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1905
1906         /*
1907          * This is required here to complete any completed requests
1908          * to be communicated over to the mid layer.
1909          */
1910         mega_rundoneq(adapter);
1911         spin_unlock_irq(&adapter->lock);
1912
1913         return rval;
1914 }
1915
1916 /**
1917  * megaraid_abort_and_reset()
1918  * @adapter: megaraid soft state
1919  * @cmd: scsi command to be aborted or reset
1920  * @aor: abort or reset flag
1921  *
1922  * Try to locate the scsi command in the pending queue. If found and is not
1923  * issued to the controller, abort/reset it. Otherwise return failure
1924  */
1925 static int
1926 megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor)
1927 {
1928         struct list_head        *pos, *next;
1929         scb_t                   *scb;
1930
1931         dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1932              (aor == SCB_ABORT)? "ABORTING":"RESET",
1933              cmd->cmnd[0], cmd->device->channel,
1934              cmd->device->id, (u32)cmd->device->lun);
1935
1936         if(list_empty(&adapter->pending_list))
1937                 return FAILED;
1938
1939         list_for_each_safe(pos, next, &adapter->pending_list) {
1940
1941                 scb = list_entry(pos, scb_t, list);
1942
1943                 if (scb->cmd == cmd) { /* Found command */
1944
1945                         scb->state |= aor;
1946
1947                         /*
1948                          * Check if this command has firmware ownership. If
1949                          * yes, we cannot reset this command. Whenever f/w
1950                          * completes this command, we will return appropriate
1951                          * status from ISR.
1952                          */
1953                         if( scb->state & SCB_ISSUED ) {
1954
1955                                 dev_warn(&adapter->dev->dev,
1956                                         "%s[%x], fw owner\n",
1957                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
1958                                         scb->idx);
1959
1960                                 return FAILED;
1961                         }
1962                         else {
1963
1964                                 /*
1965                                  * Not yet issued! Remove from the pending
1966                                  * list
1967                                  */
1968                                 dev_warn(&adapter->dev->dev,
1969                                         "%s-[%x], driver owner\n",
1970                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
1971                                         scb->idx);
1972
1973                                 mega_free_scb(adapter, scb);
1974
1975                                 if( aor == SCB_ABORT ) {
1976                                         cmd->result = (DID_ABORT << 16);
1977                                 }
1978                                 else {
1979                                         cmd->result = (DID_RESET << 16);
1980                                 }
1981
1982                                 list_add_tail(SCSI_LIST(cmd),
1983                                                 &adapter->completed_list);
1984
1985                                 return SUCCESS;
1986                         }
1987                 }
1988         }
1989
1990         return FAILED;
1991 }
1992
1993 static inline int
1994 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
1995 {
1996         *pdev = pci_alloc_dev(NULL);
1997
1998         if( *pdev == NULL ) return -1;
1999
2000         memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2001
2002         if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) {
2003                 kfree(*pdev);
2004                 return -1;
2005         }
2006
2007         return 0;
2008 }
2009
2010 static inline void
2011 free_local_pdev(struct pci_dev *pdev)
2012 {
2013         kfree(pdev);
2014 }
2015
2016 /**
2017  * mega_allocate_inquiry()
2018  * @dma_handle: handle returned for dma address
2019  * @pdev: handle to pci device
2020  *
2021  * allocates memory for inquiry structure
2022  */
2023 static inline void *
2024 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2025 {
2026         return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3),
2027                                   dma_handle, GFP_KERNEL);
2028 }
2029
2030
2031 static inline void
2032 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2033 {
2034         dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry,
2035                           dma_handle);
2036 }
2037
2038
2039 #ifdef CONFIG_PROC_FS
2040 /* Following code handles /proc fs  */
2041
2042 /**
2043  * proc_show_config()
2044  * @m: Synthetic file construction data
2045  * @v: File iterator
2046  *
2047  * Display configuration information about the controller.
2048  */
2049 static int
2050 proc_show_config(struct seq_file *m, void *v)
2051 {
2052
2053         adapter_t *adapter = m->private;
2054
2055         seq_puts(m, MEGARAID_VERSION);
2056         if(adapter->product_info.product_name[0])
2057                 seq_printf(m, "%s\n", adapter->product_info.product_name);
2058
2059         seq_puts(m, "Controller Type: ");
2060
2061         if( adapter->flag & BOARD_MEMMAP )
2062                 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2063         else
2064                 seq_puts(m, "418/428/434\n");
2065
2066         if(adapter->flag & BOARD_40LD)
2067                 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2068
2069         if(adapter->flag & BOARD_64BIT)
2070                 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2071         if( adapter->has_64bit_addr )
2072                 seq_puts(m, "Controller using 64-bit memory addressing\n");
2073         else
2074                 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2075
2076         seq_printf(m, "Base = %08lx, Irq = %d, ",
2077                    adapter->base, adapter->host->irq);
2078
2079         seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2080                    adapter->numldrv, adapter->product_info.nchannels);
2081
2082         seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2083                    adapter->fw_version, adapter->bios_version,
2084                    adapter->product_info.dram_size);
2085
2086         seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2087                    adapter->product_info.max_commands, adapter->max_cmds);
2088
2089         seq_printf(m, "support_ext_cdb    = %d\n", adapter->support_ext_cdb);
2090         seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2091         seq_printf(m, "boot_ldrv_enabled  = %d\n", adapter->boot_ldrv_enabled);
2092         seq_printf(m, "boot_ldrv          = %d\n", adapter->boot_ldrv);
2093         seq_printf(m, "boot_pdrv_enabled  = %d\n", adapter->boot_pdrv_enabled);
2094         seq_printf(m, "boot_pdrv_ch       = %d\n", adapter->boot_pdrv_ch);
2095         seq_printf(m, "boot_pdrv_tgt      = %d\n", adapter->boot_pdrv_tgt);
2096         seq_printf(m, "quiescent          = %d\n",
2097                    atomic_read(&adapter->quiescent));
2098         seq_printf(m, "has_cluster        = %d\n", adapter->has_cluster);
2099
2100         seq_puts(m, "\nModule Parameters:\n");
2101         seq_printf(m, "max_cmd_per_lun    = %d\n", max_cmd_per_lun);
2102         seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2103         return 0;
2104 }
2105
2106 /**
2107  * proc_show_stat()
2108  * @m: Synthetic file construction data
2109  * @v: File iterator
2110  *
2111  * Display statistical information about the I/O activity.
2112  */
2113 static int
2114 proc_show_stat(struct seq_file *m, void *v)
2115 {
2116         adapter_t *adapter = m->private;
2117 #if MEGA_HAVE_STATS
2118         int     i;
2119 #endif
2120
2121         seq_puts(m, "Statistical Information for this controller\n");
2122         seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2123 #if MEGA_HAVE_STATS
2124         for(i = 0; i < adapter->numldrv; i++) {
2125                 seq_printf(m, "Logical Drive %d:\n", i);
2126                 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2127                            adapter->nreads[i], adapter->nwrites[i]);
2128                 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2129                            adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2130                 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2131                            adapter->rd_errors[i], adapter->wr_errors[i]);
2132         }
2133 #else
2134         seq_puts(m, "IO and error counters not compiled in driver.\n");
2135 #endif
2136         return 0;
2137 }
2138
2139
2140 /**
2141  * proc_show_mbox()
2142  * @m: Synthetic file construction data
2143  * @v: File iterator
2144  *
2145  * Display mailbox information for the last command issued. This information
2146  * is good for debugging.
2147  */
2148 static int
2149 proc_show_mbox(struct seq_file *m, void *v)
2150 {
2151         adapter_t       *adapter = m->private;
2152         volatile mbox_t *mbox = adapter->mbox;
2153
2154         seq_puts(m, "Contents of Mail Box Structure\n");
2155         seq_printf(m, "  Fw Command   = 0x%02x\n", mbox->m_out.cmd);
2156         seq_printf(m, "  Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2157         seq_printf(m, "  No of Sectors= %04d\n", mbox->m_out.numsectors);
2158         seq_printf(m, "  LBA          = 0x%02x\n", mbox->m_out.lba);
2159         seq_printf(m, "  DTA          = 0x%08x\n", mbox->m_out.xferaddr);
2160         seq_printf(m, "  Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2161         seq_printf(m, "  No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2162         seq_printf(m, "  Busy         = %01x\n", mbox->m_in.busy);
2163         seq_printf(m, "  Status       = 0x%02x\n", mbox->m_in.status);
2164         return 0;
2165 }
2166
2167
2168 /**
2169  * proc_show_rebuild_rate()
2170  * @m: Synthetic file construction data
2171  * @v: File iterator
2172  *
2173  * Display current rebuild rate
2174  */
2175 static int
2176 proc_show_rebuild_rate(struct seq_file *m, void *v)
2177 {
2178         adapter_t       *adapter = m->private;
2179         dma_addr_t      dma_handle;
2180         caddr_t         inquiry;
2181         struct pci_dev  *pdev;
2182
2183         if( make_local_pdev(adapter, &pdev) != 0 )
2184                 return 0;
2185
2186         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2187                 goto free_pdev;
2188
2189         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2190                 seq_puts(m, "Adapter inquiry failed.\n");
2191                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2192                 goto free_inquiry;
2193         }
2194
2195         if( adapter->flag & BOARD_40LD )
2196                 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2197                            ((mega_inquiry3 *)inquiry)->rebuild_rate);
2198         else
2199                 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2200                         ((mraid_ext_inquiry *)
2201                          inquiry)->raid_inq.adapter_info.rebuild_rate);
2202
2203 free_inquiry:
2204         mega_free_inquiry(inquiry, dma_handle, pdev);
2205 free_pdev:
2206         free_local_pdev(pdev);
2207         return 0;
2208 }
2209
2210
2211 /**
2212  * proc_show_battery()
2213  * @m: Synthetic file construction data
2214  * @v: File iterator
2215  *
2216  * Display information about the battery module on the controller.
2217  */
2218 static int
2219 proc_show_battery(struct seq_file *m, void *v)
2220 {
2221         adapter_t       *adapter = m->private;
2222         dma_addr_t      dma_handle;
2223         caddr_t         inquiry;
2224         struct pci_dev  *pdev;
2225         u8      battery_status;
2226
2227         if( make_local_pdev(adapter, &pdev) != 0 )
2228                 return 0;
2229
2230         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2231                 goto free_pdev;
2232
2233         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2234                 seq_puts(m, "Adapter inquiry failed.\n");
2235                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2236                 goto free_inquiry;
2237         }
2238
2239         if( adapter->flag & BOARD_40LD ) {
2240                 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2241         }
2242         else {
2243                 battery_status = ((mraid_ext_inquiry *)inquiry)->
2244                         raid_inq.adapter_info.battery_status;
2245         }
2246
2247         /*
2248          * Decode the battery status
2249          */
2250         seq_printf(m, "Battery Status:[%d]", battery_status);
2251
2252         if(battery_status == MEGA_BATT_CHARGE_DONE)
2253                 seq_puts(m, " Charge Done");
2254
2255         if(battery_status & MEGA_BATT_MODULE_MISSING)
2256                 seq_puts(m, " Module Missing");
2257
2258         if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2259                 seq_puts(m, " Low Voltage");
2260
2261         if(battery_status & MEGA_BATT_TEMP_HIGH)
2262                 seq_puts(m, " Temperature High");
2263
2264         if(battery_status & MEGA_BATT_PACK_MISSING)
2265                 seq_puts(m, " Pack Missing");
2266
2267         if(battery_status & MEGA_BATT_CHARGE_INPROG)
2268                 seq_puts(m, " Charge In-progress");
2269
2270         if(battery_status & MEGA_BATT_CHARGE_FAIL)
2271                 seq_puts(m, " Charge Fail");
2272
2273         if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2274                 seq_puts(m, " Cycles Exceeded");
2275
2276         seq_putc(m, '\n');
2277
2278 free_inquiry:
2279         mega_free_inquiry(inquiry, dma_handle, pdev);
2280 free_pdev:
2281         free_local_pdev(pdev);
2282         return 0;
2283 }
2284
2285
2286 /*
2287  * Display scsi inquiry
2288  */
2289 static void
2290 mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2291 {
2292         int     i;
2293
2294         seq_puts(m, "  Vendor: ");
2295         seq_write(m, scsi_inq + 8, 8);
2296         seq_puts(m, "  Model: ");
2297         seq_write(m, scsi_inq + 16, 16);
2298         seq_puts(m, "  Rev: ");
2299         seq_write(m, scsi_inq + 32, 4);
2300         seq_putc(m, '\n');
2301
2302         i = scsi_inq[0] & 0x1f;
2303         seq_printf(m, "  Type:   %s ", scsi_device_type(i));
2304
2305         seq_printf(m, "                 ANSI SCSI revision: %02x",
2306                    scsi_inq[2] & 0x07);
2307
2308         if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2309                 seq_puts(m, " CCS\n");
2310         else
2311                 seq_putc(m, '\n');
2312 }
2313
2314 /**
2315  * proc_show_pdrv()
2316  * @m: Synthetic file construction data
2317  * @adapter: pointer to our soft state
2318  * @channel: channel
2319  *
2320  * Display information about the physical drives.
2321  */
2322 static int
2323 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2324 {
2325         dma_addr_t      dma_handle;
2326         char            *scsi_inq;
2327         dma_addr_t      scsi_inq_dma_handle;
2328         caddr_t         inquiry;
2329         struct pci_dev  *pdev;
2330         u8      *pdrv_state;
2331         u8      state;
2332         int     tgt;
2333         int     max_channels;
2334         int     i;
2335
2336         if( make_local_pdev(adapter, &pdev) != 0 )
2337                 return 0;
2338
2339         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2340                 goto free_pdev;
2341
2342         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2343                 seq_puts(m, "Adapter inquiry failed.\n");
2344                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2345                 goto free_inquiry;
2346         }
2347
2348
2349         scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle,
2350                                       GFP_KERNEL);
2351         if( scsi_inq == NULL ) {
2352                 seq_puts(m, "memory not available for scsi inq.\n");
2353                 goto free_inquiry;
2354         }
2355
2356         if( adapter->flag & BOARD_40LD ) {
2357                 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2358         }
2359         else {
2360                 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2361                         raid_inq.pdrv_info.pdrv_state;
2362         }
2363
2364         max_channels = adapter->product_info.nchannels;
2365
2366         if( channel >= max_channels ) {
2367                 goto free_pci;
2368         }
2369
2370         for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2371
2372                 i = channel*16 + tgt;
2373
2374                 state = *(pdrv_state + i);
2375                 switch( state & 0x0F ) {
2376                 case PDRV_ONLINE:
2377                         seq_printf(m, "Channel:%2d Id:%2d State: Online",
2378                                    channel, tgt);
2379                         break;
2380
2381                 case PDRV_FAILED:
2382                         seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2383                                    channel, tgt);
2384                         break;
2385
2386                 case PDRV_RBLD:
2387                         seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2388                                    channel, tgt);
2389                         break;
2390
2391                 case PDRV_HOTSPARE:
2392                         seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2393                                    channel, tgt);
2394                         break;
2395
2396                 default:
2397                         seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2398                                    channel, tgt);
2399                         break;
2400                 }
2401
2402                 /*
2403                  * This interface displays inquiries for disk drives
2404                  * only. Inquries for logical drives and non-disk
2405                  * devices are available through /proc/scsi/scsi
2406                  */
2407                 memset(scsi_inq, 0, 256);
2408                 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2409                                 scsi_inq_dma_handle) ||
2410                                 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2411                         continue;
2412                 }
2413
2414                 /*
2415                  * Check for overflow. We print less than 240
2416                  * characters for inquiry
2417                  */
2418                 seq_puts(m, ".\n");
2419                 mega_print_inquiry(m, scsi_inq);
2420         }
2421
2422 free_pci:
2423         dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle);
2424 free_inquiry:
2425         mega_free_inquiry(inquiry, dma_handle, pdev);
2426 free_pdev:
2427         free_local_pdev(pdev);
2428         return 0;
2429 }
2430
2431 /**
2432  * proc_show_pdrv_ch0()
2433  * @m: Synthetic file construction data
2434  * @v: File iterator
2435  *
2436  * Display information about the physical drives on physical channel 0.
2437  */
2438 static int
2439 proc_show_pdrv_ch0(struct seq_file *m, void *v)
2440 {
2441         return proc_show_pdrv(m, m->private, 0);
2442 }
2443
2444
2445 /**
2446  * proc_show_pdrv_ch1()
2447  * @m: Synthetic file construction data
2448  * @v: File iterator
2449  *
2450  * Display information about the physical drives on physical channel 1.
2451  */
2452 static int
2453 proc_show_pdrv_ch1(struct seq_file *m, void *v)
2454 {
2455         return proc_show_pdrv(m, m->private, 1);
2456 }
2457
2458
2459 /**
2460  * proc_show_pdrv_ch2()
2461  * @m: Synthetic file construction data
2462  * @v: File iterator
2463  *
2464  * Display information about the physical drives on physical channel 2.
2465  */
2466 static int
2467 proc_show_pdrv_ch2(struct seq_file *m, void *v)
2468 {
2469         return proc_show_pdrv(m, m->private, 2);
2470 }
2471
2472
2473 /**
2474  * proc_show_pdrv_ch3()
2475  * @m: Synthetic file construction data
2476  * @v: File iterator
2477  *
2478  * Display information about the physical drives on physical channel 3.
2479  */
2480 static int
2481 proc_show_pdrv_ch3(struct seq_file *m, void *v)
2482 {
2483         return proc_show_pdrv(m, m->private, 3);
2484 }
2485
2486
2487 /**
2488  * proc_show_rdrv()
2489  * @m: Synthetic file construction data
2490  * @adapter: pointer to our soft state
2491  * @start: starting logical drive to display
2492  * @end: ending logical drive to display
2493  *
2494  * We do not print the inquiry information since its already available through
2495  * /proc/scsi/scsi interface
2496  */
2497 static int
2498 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2499 {
2500         dma_addr_t      dma_handle;
2501         logdrv_param    *lparam;
2502         megacmd_t       mc;
2503         char            *disk_array;
2504         dma_addr_t      disk_array_dma_handle;
2505         caddr_t         inquiry;
2506         struct pci_dev  *pdev;
2507         u8      *rdrv_state;
2508         int     num_ldrv;
2509         u32     array_sz;
2510         int     i;
2511
2512         if( make_local_pdev(adapter, &pdev) != 0 )
2513                 return 0;
2514
2515         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2516                 goto free_pdev;
2517
2518         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2519                 seq_puts(m, "Adapter inquiry failed.\n");
2520                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2521                 goto free_inquiry;
2522         }
2523
2524         memset(&mc, 0, sizeof(megacmd_t));
2525
2526         if( adapter->flag & BOARD_40LD ) {
2527                 array_sz = sizeof(disk_array_40ld);
2528
2529                 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2530
2531                 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2532         }
2533         else {
2534                 array_sz = sizeof(disk_array_8ld);
2535
2536                 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2537                         raid_inq.logdrv_info.ldrv_state;
2538
2539                 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2540                         raid_inq.logdrv_info.num_ldrv;
2541         }
2542
2543         disk_array = dma_alloc_coherent(&pdev->dev, array_sz,
2544                                         &disk_array_dma_handle, GFP_KERNEL);
2545
2546         if( disk_array == NULL ) {
2547                 seq_puts(m, "memory not available.\n");
2548                 goto free_inquiry;
2549         }
2550
2551         mc.xferaddr = (u32)disk_array_dma_handle;
2552
2553         if( adapter->flag & BOARD_40LD ) {
2554                 mc.cmd = FC_NEW_CONFIG;
2555                 mc.opcode = OP_DCMD_READ_CONFIG;
2556
2557                 if( mega_internal_command(adapter, &mc, NULL) ) {
2558                         seq_puts(m, "40LD read config failed.\n");
2559                         goto free_pci;
2560                 }
2561
2562         }
2563         else {
2564                 mc.cmd = NEW_READ_CONFIG_8LD;
2565
2566                 if( mega_internal_command(adapter, &mc, NULL) ) {
2567                         mc.cmd = READ_CONFIG_8LD;
2568                         if( mega_internal_command(adapter, &mc, NULL) ) {
2569                                 seq_puts(m, "8LD read config failed.\n");
2570                                 goto free_pci;
2571                         }
2572                 }
2573         }
2574
2575         for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2576
2577                 if( adapter->flag & BOARD_40LD ) {
2578                         lparam =
2579                         &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2580                 }
2581                 else {
2582                         lparam =
2583                         &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2584                 }
2585
2586                 /*
2587                  * Check for overflow. We print less than 240 characters for
2588                  * information about each logical drive.
2589                  */
2590                 seq_printf(m, "Logical drive:%2d:, ", i);
2591
2592                 switch( rdrv_state[i] & 0x0F ) {
2593                 case RDRV_OFFLINE:
2594                         seq_puts(m, "state: offline");
2595                         break;
2596                 case RDRV_DEGRADED:
2597                         seq_puts(m, "state: degraded");
2598                         break;
2599                 case RDRV_OPTIMAL:
2600                         seq_puts(m, "state: optimal");
2601                         break;
2602                 case RDRV_DELETED:
2603                         seq_puts(m, "state: deleted");
2604                         break;
2605                 default:
2606                         seq_puts(m, "state: unknown");
2607                         break;
2608                 }
2609
2610                 /*
2611                  * Check if check consistency or initialization is going on
2612                  * for this logical drive.
2613                  */
2614                 if( (rdrv_state[i] & 0xF0) == 0x20 )
2615                         seq_puts(m, ", check-consistency in progress");
2616                 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2617                         seq_puts(m, ", initialization in progress");
2618
2619                 seq_putc(m, '\n');
2620
2621                 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2622                 seq_printf(m, "RAID level:%3d, ", lparam->level);
2623                 seq_printf(m, "Stripe size:%3d, ",
2624                            lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2625                 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2626
2627                 seq_puts(m, "Read Policy: ");
2628                 switch(lparam->read_ahead) {
2629                 case NO_READ_AHEAD:
2630                         seq_puts(m, "No read ahead, ");
2631                         break;
2632                 case READ_AHEAD:
2633                         seq_puts(m, "Read ahead, ");
2634                         break;
2635                 case ADAP_READ_AHEAD:
2636                         seq_puts(m, "Adaptive, ");
2637                         break;
2638
2639                 }
2640
2641                 seq_puts(m, "Write Policy: ");
2642                 switch(lparam->write_mode) {
2643                 case WRMODE_WRITE_THRU:
2644                         seq_puts(m, "Write thru, ");
2645                         break;
2646                 case WRMODE_WRITE_BACK:
2647                         seq_puts(m, "Write back, ");
2648                         break;
2649                 }
2650
2651                 seq_puts(m, "Cache Policy: ");
2652                 switch(lparam->direct_io) {
2653                 case CACHED_IO:
2654                         seq_puts(m, "Cached IO\n\n");
2655                         break;
2656                 case DIRECT_IO:
2657                         seq_puts(m, "Direct IO\n\n");
2658                         break;
2659                 }
2660         }
2661
2662 free_pci:
2663         dma_free_coherent(&pdev->dev, array_sz, disk_array,
2664                           disk_array_dma_handle);
2665 free_inquiry:
2666         mega_free_inquiry(inquiry, dma_handle, pdev);
2667 free_pdev:
2668         free_local_pdev(pdev);
2669         return 0;
2670 }
2671
2672 /**
2673  * proc_show_rdrv_10()
2674  * @m: Synthetic file construction data
2675  * @v: File iterator
2676  *
2677  * Display real time information about the logical drives 0 through 9.
2678  */
2679 static int
2680 proc_show_rdrv_10(struct seq_file *m, void *v)
2681 {
2682         return proc_show_rdrv(m, m->private, 0, 9);
2683 }
2684
2685
2686 /**
2687  * proc_show_rdrv_20()
2688  * @m: Synthetic file construction data
2689  * @v: File iterator
2690  *
2691  * Display real time information about the logical drives 0 through 9.
2692  */
2693 static int
2694 proc_show_rdrv_20(struct seq_file *m, void *v)
2695 {
2696         return proc_show_rdrv(m, m->private, 10, 19);
2697 }
2698
2699
2700 /**
2701  * proc_show_rdrv_30()
2702  * @m: Synthetic file construction data
2703  * @v: File iterator
2704  *
2705  * Display real time information about the logical drives 0 through 9.
2706  */
2707 static int
2708 proc_show_rdrv_30(struct seq_file *m, void *v)
2709 {
2710         return proc_show_rdrv(m, m->private, 20, 29);
2711 }
2712
2713
2714 /**
2715  * proc_show_rdrv_40()
2716  * @m: Synthetic file construction data
2717  * @v: File iterator
2718  *
2719  * Display real time information about the logical drives 0 through 9.
2720  */
2721 static int
2722 proc_show_rdrv_40(struct seq_file *m, void *v)
2723 {
2724         return proc_show_rdrv(m, m->private, 30, 39);
2725 }
2726
2727 /**
2728  * mega_create_proc_entry()
2729  * @index: index in soft state array
2730  * @parent: parent node for this /proc entry
2731  *
2732  * Creates /proc entries for our controllers.
2733  */
2734 static void
2735 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2736 {
2737         adapter_t *adapter = hba_soft_state[index];
2738         struct proc_dir_entry *dir;
2739         u8 string[16];
2740
2741         sprintf(string, "hba%d", adapter->host->host_no);
2742         dir = proc_mkdir_data(string, 0, parent, adapter);
2743         if (!dir) {
2744                 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2745                 return;
2746         }
2747
2748         proc_create_single_data("config", S_IRUSR, dir,
2749                         proc_show_config, adapter);
2750         proc_create_single_data("stat", S_IRUSR, dir,
2751                         proc_show_stat, adapter);
2752         proc_create_single_data("mailbox", S_IRUSR, dir,
2753                         proc_show_mbox, adapter);
2754 #if MEGA_HAVE_ENH_PROC
2755         proc_create_single_data("rebuild-rate", S_IRUSR, dir,
2756                         proc_show_rebuild_rate, adapter);
2757         proc_create_single_data("battery-status", S_IRUSR, dir,
2758                         proc_show_battery, adapter);
2759         proc_create_single_data("diskdrives-ch0", S_IRUSR, dir,
2760                         proc_show_pdrv_ch0, adapter);
2761         proc_create_single_data("diskdrives-ch1", S_IRUSR, dir,
2762                         proc_show_pdrv_ch1, adapter);
2763         proc_create_single_data("diskdrives-ch2", S_IRUSR, dir,
2764                         proc_show_pdrv_ch2, adapter);
2765         proc_create_single_data("diskdrives-ch3", S_IRUSR, dir,
2766                         proc_show_pdrv_ch3, adapter);
2767         proc_create_single_data("raiddrives-0-9", S_IRUSR, dir,
2768                         proc_show_rdrv_10, adapter);
2769         proc_create_single_data("raiddrives-10-19", S_IRUSR, dir,
2770                         proc_show_rdrv_20, adapter);
2771         proc_create_single_data("raiddrives-20-29", S_IRUSR, dir,
2772                         proc_show_rdrv_30, adapter);
2773         proc_create_single_data("raiddrives-30-39", S_IRUSR, dir,
2774                         proc_show_rdrv_40, adapter);
2775 #endif
2776 }
2777
2778 #else
2779 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2780 {
2781 }
2782 #endif
2783
2784
2785 /*
2786  * megaraid_biosparam()
2787  *
2788  * Return the disk geometry for a particular disk
2789  */
2790 static int
2791 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2792                     sector_t capacity, int geom[])
2793 {
2794         adapter_t       *adapter;
2795         int     heads;
2796         int     sectors;
2797         int     cylinders;
2798
2799         /* Get pointer to host config structure */
2800         adapter = (adapter_t *)sdev->host->hostdata;
2801
2802         if (IS_RAID_CH(adapter, sdev->channel)) {
2803                         /* Default heads (64) & sectors (32) */
2804                         heads = 64;
2805                         sectors = 32;
2806                         cylinders = (ulong)capacity / (heads * sectors);
2807
2808                         /*
2809                          * Handle extended translation size for logical drives
2810                          * > 1Gb
2811                          */
2812                         if ((ulong)capacity >= 0x200000) {
2813                                 heads = 255;
2814                                 sectors = 63;
2815                                 cylinders = (ulong)capacity / (heads * sectors);
2816                         }
2817
2818                         /* return result */
2819                         geom[0] = heads;
2820                         geom[1] = sectors;
2821                         geom[2] = cylinders;
2822         }
2823         else {
2824                 if (scsi_partsize(bdev, capacity, geom))
2825                         return 0;
2826
2827                 dev_info(&adapter->dev->dev,
2828                          "invalid partition on this disk on channel %d\n",
2829                          sdev->channel);
2830
2831                 /* Default heads (64) & sectors (32) */
2832                 heads = 64;
2833                 sectors = 32;
2834                 cylinders = (ulong)capacity / (heads * sectors);
2835
2836                 /* Handle extended translation size for logical drives > 1Gb */
2837                 if ((ulong)capacity >= 0x200000) {
2838                         heads = 255;
2839                         sectors = 63;
2840                         cylinders = (ulong)capacity / (heads * sectors);
2841                 }
2842
2843                 /* return result */
2844                 geom[0] = heads;
2845                 geom[1] = sectors;
2846                 geom[2] = cylinders;
2847         }
2848
2849         return 0;
2850 }
2851
2852 /**
2853  * mega_init_scb()
2854  * @adapter: pointer to our soft state
2855  *
2856  * Allocate memory for the various pointers in the scb structures:
2857  * scatter-gather list pointer, passthru and extended passthru structure
2858  * pointers.
2859  */
2860 static int
2861 mega_init_scb(adapter_t *adapter)
2862 {
2863         scb_t   *scb;
2864         int     i;
2865
2866         for( i = 0; i < adapter->max_cmds; i++ ) {
2867
2868                 scb = &adapter->scb_list[i];
2869
2870                 scb->sgl64 = NULL;
2871                 scb->sgl = NULL;
2872                 scb->pthru = NULL;
2873                 scb->epthru = NULL;
2874         }
2875
2876         for( i = 0; i < adapter->max_cmds; i++ ) {
2877
2878                 scb = &adapter->scb_list[i];
2879
2880                 scb->idx = i;
2881
2882                 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev,
2883                                                 sizeof(mega_sgl64) * adapter->sglen,
2884                                                 &scb->sgl_dma_addr, GFP_KERNEL);
2885
2886                 scb->sgl = (mega_sglist *)scb->sgl64;
2887
2888                 if( !scb->sgl ) {
2889                         dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2890                         mega_free_sgl(adapter);
2891                         return -1;
2892                 }
2893
2894                 scb->pthru = dma_alloc_coherent(&adapter->dev->dev,
2895                                                 sizeof(mega_passthru),
2896                                                 &scb->pthru_dma_addr, GFP_KERNEL);
2897
2898                 if( !scb->pthru ) {
2899                         dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2900                         mega_free_sgl(adapter);
2901                         return -1;
2902                 }
2903
2904                 scb->epthru = dma_alloc_coherent(&adapter->dev->dev,
2905                                                  sizeof(mega_ext_passthru),
2906                                                  &scb->epthru_dma_addr, GFP_KERNEL);
2907
2908                 if( !scb->epthru ) {
2909                         dev_warn(&adapter->dev->dev,
2910                                 "Can't allocate extended passthru\n");
2911                         mega_free_sgl(adapter);
2912                         return -1;
2913                 }
2914
2915
2916                 scb->dma_type = MEGA_DMA_TYPE_NONE;
2917
2918                 /*
2919                  * Link to free list
2920                  * lock not required since we are loading the driver, so no
2921                  * commands possible right now.
2922                  */
2923                 scb->state = SCB_FREE;
2924                 scb->cmd = NULL;
2925                 list_add(&scb->list, &adapter->free_list);
2926         }
2927
2928         return 0;
2929 }
2930
2931
2932 /**
2933  * megadev_open()
2934  * @inode: unused
2935  * @filep: unused
2936  *
2937  * Routines for the character/ioctl interface to the driver. Find out if this
2938  * is a valid open.
2939  */
2940 static int
2941 megadev_open (struct inode *inode, struct file *filep)
2942 {
2943         /*
2944          * Only allow superuser to access private ioctl interface
2945          */
2946         if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2947
2948         return 0;
2949 }
2950
2951
2952 /**
2953  * megadev_ioctl()
2954  * @filep: Our device file
2955  * @cmd: ioctl command
2956  * @arg: user buffer
2957  *
2958  * ioctl entry point for our private ioctl interface. We move the data in from
2959  * the user space, prepare the command (if necessary, convert the old MIMD
2960  * ioctl to new ioctl command), and issue a synchronous command to the
2961  * controller.
2962  */
2963 static int
2964 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
2965 {
2966         adapter_t       *adapter;
2967         nitioctl_t      uioc;
2968         int             adapno;
2969         int             rval;
2970         mega_passthru   __user *upthru; /* user address for passthru */
2971         mega_passthru   *pthru;         /* copy user passthru here */
2972         dma_addr_t      pthru_dma_hndl;
2973         void            *data = NULL;   /* data to be transferred */
2974         dma_addr_t      data_dma_hndl;  /* dma handle for data xfer area */
2975         megacmd_t       mc;
2976 #if MEGA_HAVE_STATS
2977         megastat_t      __user *ustats = NULL;
2978         int             num_ldrv = 0;
2979 #endif
2980         u32             uxferaddr = 0;
2981         struct pci_dev  *pdev;
2982
2983         /*
2984          * Make sure only USCSICMD are issued through this interface.
2985          * MIMD application would still fire different command.
2986          */
2987         if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
2988                 return -EINVAL;
2989         }
2990
2991         /*
2992          * Check and convert a possible MIMD command to NIT command.
2993          * mega_m_to_n() copies the data from the user space, so we do not
2994          * have to do it here.
2995          * NOTE: We will need some user address to copyout the data, therefore
2996          * the inteface layer will also provide us with the required user
2997          * addresses.
2998          */
2999         memset(&uioc, 0, sizeof(nitioctl_t));
3000         if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3001                 return rval;
3002
3003
3004         switch( uioc.opcode ) {
3005
3006         case GET_DRIVER_VER:
3007                 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3008                         return (-EFAULT);
3009
3010                 break;
3011
3012         case GET_N_ADAP:
3013                 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3014                         return (-EFAULT);
3015
3016                 /*
3017                  * Shucks. MIMD interface returns a positive value for number
3018                  * of adapters. TODO: Change it to return 0 when there is no
3019                  * applicatio using mimd interface.
3020                  */
3021                 return hba_count;
3022
3023         case GET_ADAP_INFO:
3024
3025                 /*
3026                  * Which adapter
3027                  */
3028                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3029                         return (-ENODEV);
3030
3031                 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3032                                 sizeof(struct mcontroller)) )
3033                         return (-EFAULT);
3034                 break;
3035
3036 #if MEGA_HAVE_STATS
3037
3038         case GET_STATS:
3039                 /*
3040                  * Which adapter
3041                  */
3042                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3043                         return (-ENODEV);
3044
3045                 adapter = hba_soft_state[adapno];
3046
3047                 ustats = uioc.uioc_uaddr;
3048
3049                 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3050                         return (-EFAULT);
3051
3052                 /*
3053                  * Check for the validity of the logical drive number
3054                  */
3055                 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3056
3057                 if( copy_to_user(ustats->nreads, adapter->nreads,
3058                                         num_ldrv*sizeof(u32)) )
3059                         return -EFAULT;
3060
3061                 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3062                                         num_ldrv*sizeof(u32)) )
3063                         return -EFAULT;
3064
3065                 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3066                                         num_ldrv*sizeof(u32)) )
3067                         return -EFAULT;
3068
3069                 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3070                                         num_ldrv*sizeof(u32)) )
3071                         return -EFAULT;
3072
3073                 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3074                                         num_ldrv*sizeof(u32)) )
3075                         return -EFAULT;
3076
3077                 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3078                                         num_ldrv*sizeof(u32)) )
3079                         return -EFAULT;
3080
3081                 return 0;
3082
3083 #endif
3084         case MBOX_CMD:
3085
3086                 /*
3087                  * Which adapter
3088                  */
3089                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3090                         return (-ENODEV);
3091
3092                 adapter = hba_soft_state[adapno];
3093
3094                 /*
3095                  * Deletion of logical drive is a special case. The adapter
3096                  * should be quiescent before this command is issued.
3097                  */
3098                 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3099                                 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3100
3101                         /*
3102                          * Do we support this feature
3103                          */
3104                         if( !adapter->support_random_del ) {
3105                                 dev_warn(&adapter->dev->dev, "logdrv "
3106                                         "delete on non-supporting F/W\n");
3107
3108                                 return (-EINVAL);
3109                         }
3110
3111                         rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3112
3113                         if( rval == 0 ) {
3114                                 memset(&mc, 0, sizeof(megacmd_t));
3115
3116                                 mc.status = rval;
3117
3118                                 rval = mega_n_to_m((void __user *)arg, &mc);
3119                         }
3120
3121                         return rval;
3122                 }
3123                 /*
3124                  * This interface only support the regular passthru commands.
3125                  * Reject extended passthru and 64-bit passthru
3126                  */
3127                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3128                         uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3129
3130                         dev_warn(&adapter->dev->dev, "rejected passthru\n");
3131
3132                         return (-EINVAL);
3133                 }
3134
3135                 /*
3136                  * For all internal commands, the buffer must be allocated in
3137                  * <4GB address range
3138                  */
3139                 if( make_local_pdev(adapter, &pdev) != 0 )
3140                         return -EIO;
3141
3142                 /* Is it a passthru command or a DCMD */
3143                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3144                         /* Passthru commands */
3145
3146                         pthru = dma_alloc_coherent(&pdev->dev,
3147                                                    sizeof(mega_passthru),
3148                                                    &pthru_dma_hndl, GFP_KERNEL);
3149
3150                         if( pthru == NULL ) {
3151                                 free_local_pdev(pdev);
3152                                 return (-ENOMEM);
3153                         }
3154
3155                         /*
3156                          * The user passthru structure
3157                          */
3158                         upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3159
3160                         /*
3161                          * Copy in the user passthru here.
3162                          */
3163                         if( copy_from_user(pthru, upthru,
3164                                                 sizeof(mega_passthru)) ) {
3165
3166                                 dma_free_coherent(&pdev->dev,
3167                                                   sizeof(mega_passthru),
3168                                                   pthru, pthru_dma_hndl);
3169
3170                                 free_local_pdev(pdev);
3171
3172                                 return (-EFAULT);
3173                         }
3174
3175                         /*
3176                          * Is there a data transfer
3177                          */
3178                         if( pthru->dataxferlen ) {
3179                                 data = dma_alloc_coherent(&pdev->dev,
3180                                                           pthru->dataxferlen,
3181                                                           &data_dma_hndl,
3182                                                           GFP_KERNEL);
3183
3184                                 if( data == NULL ) {
3185                                         dma_free_coherent(&pdev->dev,
3186                                                           sizeof(mega_passthru),
3187                                                           pthru,
3188                                                           pthru_dma_hndl);
3189
3190                                         free_local_pdev(pdev);
3191
3192                                         return (-ENOMEM);
3193                                 }
3194
3195                                 /*
3196                                  * Save the user address and point the kernel
3197                                  * address at just allocated memory
3198                                  */
3199                                 uxferaddr = pthru->dataxferaddr;
3200                                 pthru->dataxferaddr = data_dma_hndl;
3201                         }
3202
3203
3204                         /*
3205                          * Is data coming down-stream
3206                          */
3207                         if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3208                                 /*
3209                                  * Get the user data
3210                                  */
3211                                 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3212                                                         pthru->dataxferlen) ) {
3213                                         rval = (-EFAULT);
3214                                         goto freemem_and_return;
3215                                 }
3216                         }
3217
3218                         memset(&mc, 0, sizeof(megacmd_t));
3219
3220                         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3221                         mc.xferaddr = (u32)pthru_dma_hndl;
3222
3223                         /*
3224                          * Issue the command
3225                          */
3226                         mega_internal_command(adapter, &mc, pthru);
3227
3228                         rval = mega_n_to_m((void __user *)arg, &mc);
3229
3230                         if( rval ) goto freemem_and_return;
3231
3232
3233                         /*
3234                          * Is data going up-stream
3235                          */
3236                         if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3237                                 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3238                                                         pthru->dataxferlen) ) {
3239                                         rval = (-EFAULT);
3240                                 }
3241                         }
3242
3243                         /*
3244                          * Send the request sense data also, irrespective of
3245                          * whether the user has asked for it or not.
3246                          */
3247                         if (copy_to_user(upthru->reqsensearea,
3248                                         pthru->reqsensearea, 14))
3249                                 rval = -EFAULT;
3250
3251 freemem_and_return:
3252                         if( pthru->dataxferlen ) {
3253                                 dma_free_coherent(&pdev->dev,
3254                                                   pthru->dataxferlen, data,
3255                                                   data_dma_hndl);
3256                         }
3257
3258                         dma_free_coherent(&pdev->dev, sizeof(mega_passthru),
3259                                           pthru, pthru_dma_hndl);
3260
3261                         free_local_pdev(pdev);
3262
3263                         return rval;
3264                 }
3265                 else {
3266                         /* DCMD commands */
3267
3268                         /*
3269                          * Is there a data transfer
3270                          */
3271                         if( uioc.xferlen ) {
3272                                 data = dma_alloc_coherent(&pdev->dev,
3273                                                           uioc.xferlen,
3274                                                           &data_dma_hndl,
3275                                                           GFP_KERNEL);
3276
3277                                 if( data == NULL ) {
3278                                         free_local_pdev(pdev);
3279                                         return (-ENOMEM);
3280                                 }
3281
3282                                 uxferaddr = MBOX(uioc)->xferaddr;
3283                         }
3284
3285                         /*
3286                          * Is data coming down-stream
3287                          */
3288                         if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3289                                 /*
3290                                  * Get the user data
3291                                  */
3292                                 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3293                                                         uioc.xferlen) ) {
3294
3295                                         dma_free_coherent(&pdev->dev,
3296                                                           uioc.xferlen, data,
3297                                                           data_dma_hndl);
3298
3299                                         free_local_pdev(pdev);
3300
3301                                         return (-EFAULT);
3302                                 }
3303                         }
3304
3305                         memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3306
3307                         mc.xferaddr = (u32)data_dma_hndl;
3308
3309                         /*
3310                          * Issue the command
3311                          */
3312                         mega_internal_command(adapter, &mc, NULL);
3313
3314                         rval = mega_n_to_m((void __user *)arg, &mc);
3315
3316                         if( rval ) {
3317                                 if( uioc.xferlen ) {
3318                                         dma_free_coherent(&pdev->dev,
3319                                                           uioc.xferlen, data,
3320                                                           data_dma_hndl);
3321                                 }
3322
3323                                 free_local_pdev(pdev);
3324
3325                                 return rval;
3326                         }
3327
3328                         /*
3329                          * Is data going up-stream
3330                          */
3331                         if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3332                                 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3333                                                         uioc.xferlen) ) {
3334
3335                                         rval = (-EFAULT);
3336                                 }
3337                         }
3338
3339                         if( uioc.xferlen ) {
3340                                 dma_free_coherent(&pdev->dev, uioc.xferlen,
3341                                                   data, data_dma_hndl);
3342                         }
3343
3344                         free_local_pdev(pdev);
3345
3346                         return rval;
3347                 }
3348
3349         default:
3350                 return (-EINVAL);
3351         }
3352
3353         return 0;
3354 }
3355
3356 static long
3357 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3358 {
3359         int ret;
3360
3361         mutex_lock(&megadev_mutex);
3362         ret = megadev_ioctl(filep, cmd, arg);
3363         mutex_unlock(&megadev_mutex);
3364
3365         return ret;
3366 }
3367
3368 /**
3369  * mega_m_to_n()
3370  * @arg: user address
3371  * @uioc: new ioctl structure
3372  *
3373  * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3374  * structure
3375  *
3376  * Converts the older mimd ioctl structure to newer NIT structure
3377  */
3378 static int
3379 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3380 {
3381         struct uioctl_t uioc_mimd;
3382         char    signature[8] = {0};
3383         u8      opcode;
3384         u8      subopcode;
3385
3386
3387         /*
3388          * check is the application conforms to NIT. We do not have to do much
3389          * in that case.
3390          * We exploit the fact that the signature is stored in the very
3391          * beginning of the structure.
3392          */
3393
3394         if( copy_from_user(signature, arg, 7) )
3395                 return (-EFAULT);
3396
3397         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3398
3399                 /*
3400                  * NOTE NOTE: The nit ioctl is still under flux because of
3401                  * change of mailbox definition, in HPE. No applications yet
3402                  * use this interface and let's not have applications use this
3403                  * interface till the new specifitions are in place.
3404                  */
3405                 return -EINVAL;
3406 #if 0
3407                 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3408                         return (-EFAULT);
3409                 return 0;
3410 #endif
3411         }
3412
3413         /*
3414          * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3415          *
3416          * Get the user ioctl structure
3417          */
3418         if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3419                 return (-EFAULT);
3420
3421
3422         /*
3423          * Get the opcode and subopcode for the commands
3424          */
3425         opcode = uioc_mimd.ui.fcs.opcode;
3426         subopcode = uioc_mimd.ui.fcs.subopcode;
3427
3428         switch (opcode) {
3429         case 0x82:
3430
3431                 switch (subopcode) {
3432
3433                 case MEGAIOC_QDRVRVER:  /* Query driver version */
3434                         uioc->opcode = GET_DRIVER_VER;
3435                         uioc->uioc_uaddr = uioc_mimd.data;
3436                         break;
3437
3438                 case MEGAIOC_QNADAP:    /* Get # of adapters */
3439                         uioc->opcode = GET_N_ADAP;
3440                         uioc->uioc_uaddr = uioc_mimd.data;
3441                         break;
3442
3443                 case MEGAIOC_QADAPINFO: /* Get adapter information */
3444                         uioc->opcode = GET_ADAP_INFO;
3445                         uioc->adapno = uioc_mimd.ui.fcs.adapno;
3446                         uioc->uioc_uaddr = uioc_mimd.data;
3447                         break;
3448
3449                 default:
3450                         return(-EINVAL);
3451                 }
3452
3453                 break;
3454
3455
3456         case 0x81:
3457
3458                 uioc->opcode = MBOX_CMD;
3459                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3460
3461                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3462
3463                 uioc->xferlen = uioc_mimd.ui.fcs.length;
3464
3465                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3466                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3467
3468                 break;
3469
3470         case 0x80:
3471
3472                 uioc->opcode = MBOX_CMD;
3473                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3474
3475                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3476
3477                 /*
3478                  * Choose the xferlen bigger of input and output data
3479                  */
3480                 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3481                         uioc_mimd.outlen : uioc_mimd.inlen;
3482
3483                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3484                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3485
3486                 break;
3487
3488         default:
3489                 return (-EINVAL);
3490
3491         }
3492
3493         return 0;
3494 }
3495
3496 /*
3497  * mega_n_to_m()
3498  * @arg: user address
3499  * @mc: mailbox command
3500  *
3501  * Updates the status information to the application, depending on application
3502  * conforms to older mimd ioctl interface or newer NIT ioctl interface
3503  */
3504 static int
3505 mega_n_to_m(void __user *arg, megacmd_t *mc)
3506 {
3507         nitioctl_t      __user *uiocp;
3508         megacmd_t       __user *umc;
3509         mega_passthru   __user *upthru;
3510         struct uioctl_t __user *uioc_mimd;
3511         char    signature[8] = {0};
3512
3513         /*
3514          * check is the application conforms to NIT.
3515          */
3516         if( copy_from_user(signature, arg, 7) )
3517                 return -EFAULT;
3518
3519         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3520
3521                 uiocp = arg;
3522
3523                 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3524                         return (-EFAULT);
3525
3526                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3527
3528                         umc = MBOX_P(uiocp);
3529
3530                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3531                                 return -EFAULT;
3532
3533                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3534                                 return (-EFAULT);
3535                 }
3536         }
3537         else {
3538                 uioc_mimd = arg;
3539
3540                 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3541                         return (-EFAULT);
3542
3543                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3544
3545                         umc = (megacmd_t __user *)uioc_mimd->mbox;
3546
3547                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3548                                 return (-EFAULT);
3549
3550                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3551                                 return (-EFAULT);
3552                 }
3553         }
3554
3555         return 0;
3556 }
3557
3558
3559 /*
3560  * MEGARAID 'FW' commands.
3561  */
3562
3563 /**
3564  * mega_is_bios_enabled()
3565  * @adapter: pointer to our soft state
3566  *
3567  * issue command to find out if the BIOS is enabled for this controller
3568  */
3569 static int
3570 mega_is_bios_enabled(adapter_t *adapter)
3571 {
3572         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3573         mbox_t  *mbox;
3574
3575         mbox = (mbox_t *)raw_mbox;
3576
3577         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3578
3579         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3580
3581         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3582
3583         raw_mbox[0] = IS_BIOS_ENABLED;
3584         raw_mbox[2] = GET_BIOS;
3585
3586         issue_scb_block(adapter, raw_mbox);
3587
3588         return *(char *)adapter->mega_buffer;
3589 }
3590
3591
3592 /**
3593  * mega_enum_raid_scsi()
3594  * @adapter: pointer to our soft state
3595  *
3596  * Find out what channels are RAID/SCSI. This information is used to
3597  * differentiate the virtual channels and physical channels and to support
3598  * ROMB feature and non-disk devices.
3599  */
3600 static void
3601 mega_enum_raid_scsi(adapter_t *adapter)
3602 {
3603         unsigned char raw_mbox[sizeof(struct mbox_out)];
3604         mbox_t *mbox;
3605         int i;
3606
3607         mbox = (mbox_t *)raw_mbox;
3608
3609         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3610
3611         /*
3612          * issue command to find out what channels are raid/scsi
3613          */
3614         raw_mbox[0] = CHNL_CLASS;
3615         raw_mbox[2] = GET_CHNL_CLASS;
3616
3617         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3618
3619         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3620
3621         /*
3622          * Non-ROMB firmware fail this command, so all channels
3623          * must be shown RAID
3624          */
3625         adapter->mega_ch_class = 0xFF;
3626
3627         if(!issue_scb_block(adapter, raw_mbox)) {
3628                 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3629
3630         }
3631
3632         for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3633                 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3634                         dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3635                                         i);
3636                 }
3637                 else {
3638                         dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3639                                         i);
3640                 }
3641         }
3642
3643         return;
3644 }
3645
3646
3647 /**
3648  * mega_get_boot_drv()
3649  * @adapter: pointer to our soft state
3650  *
3651  * Find out which device is the boot device. Note, any logical drive or any
3652  * phyical device (e.g., a CDROM) can be designated as a boot device.
3653  */
3654 static void
3655 mega_get_boot_drv(adapter_t *adapter)
3656 {
3657         struct private_bios_data        *prv_bios_data;
3658         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3659         mbox_t  *mbox;
3660         u16     cksum = 0;
3661         u8      *cksum_p;
3662         u8      boot_pdrv;
3663         int     i;
3664
3665         mbox = (mbox_t *)raw_mbox;
3666
3667         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3668
3669         raw_mbox[0] = BIOS_PVT_DATA;
3670         raw_mbox[2] = GET_BIOS_PVT_DATA;
3671
3672         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3673
3674         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3675
3676         adapter->boot_ldrv_enabled = 0;
3677         adapter->boot_ldrv = 0;
3678
3679         adapter->boot_pdrv_enabled = 0;
3680         adapter->boot_pdrv_ch = 0;
3681         adapter->boot_pdrv_tgt = 0;
3682
3683         if(issue_scb_block(adapter, raw_mbox) == 0) {
3684                 prv_bios_data =
3685                         (struct private_bios_data *)adapter->mega_buffer;
3686
3687                 cksum = 0;
3688                 cksum_p = (char *)prv_bios_data;
3689                 for (i = 0; i < 14; i++ ) {
3690                         cksum += (u16)(*cksum_p++);
3691                 }
3692
3693                 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3694
3695                         /*
3696                          * If MSB is set, a physical drive is set as boot
3697                          * device
3698                          */
3699                         if( prv_bios_data->boot_drv & 0x80 ) {
3700                                 adapter->boot_pdrv_enabled = 1;
3701                                 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3702                                 adapter->boot_pdrv_ch = boot_pdrv / 16;
3703                                 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3704                         }
3705                         else {
3706                                 adapter->boot_ldrv_enabled = 1;
3707                                 adapter->boot_ldrv = prv_bios_data->boot_drv;
3708                         }
3709                 }
3710         }
3711
3712 }
3713
3714 /**
3715  * mega_support_random_del()
3716  * @adapter: pointer to our soft state
3717  *
3718  * Find out if this controller supports random deletion and addition of
3719  * logical drives
3720  */
3721 static int
3722 mega_support_random_del(adapter_t *adapter)
3723 {
3724         unsigned char raw_mbox[sizeof(struct mbox_out)];
3725         mbox_t *mbox;
3726         int rval;
3727
3728         mbox = (mbox_t *)raw_mbox;
3729
3730         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3731
3732         /*
3733          * issue command
3734          */
3735         raw_mbox[0] = FC_DEL_LOGDRV;
3736         raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3737
3738         rval = issue_scb_block(adapter, raw_mbox);
3739
3740         return !rval;
3741 }
3742
3743
3744 /**
3745  * mega_support_ext_cdb()
3746  * @adapter: pointer to our soft state
3747  *
3748  * Find out if this firmware support cdblen > 10
3749  */
3750 static int
3751 mega_support_ext_cdb(adapter_t *adapter)
3752 {
3753         unsigned char raw_mbox[sizeof(struct mbox_out)];
3754         mbox_t *mbox;
3755         int rval;
3756
3757         mbox = (mbox_t *)raw_mbox;
3758
3759         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3760         /*
3761          * issue command to find out if controller supports extended CDBs.
3762          */
3763         raw_mbox[0] = 0xA4;
3764         raw_mbox[2] = 0x16;
3765
3766         rval = issue_scb_block(adapter, raw_mbox);
3767
3768         return !rval;
3769 }
3770
3771
3772 /**
3773  * mega_del_logdrv()
3774  * @adapter: pointer to our soft state
3775  * @logdrv: logical drive to be deleted
3776  *
3777  * Delete the specified logical drive. It is the responsibility of the user
3778  * app to let the OS know about this operation.
3779  */
3780 static int
3781 mega_del_logdrv(adapter_t *adapter, int logdrv)
3782 {
3783         unsigned long flags;
3784         scb_t *scb;
3785         int rval;
3786
3787         /*
3788          * Stop sending commands to the controller, queue them internally.
3789          * When deletion is complete, ISR will flush the queue.
3790          */
3791         atomic_set(&adapter->quiescent, 1);
3792
3793         /*
3794          * Wait till all the issued commands are complete and there are no
3795          * commands in the pending queue
3796          */
3797         while (atomic_read(&adapter->pend_cmds) > 0 ||
3798                !list_empty(&adapter->pending_list))
3799                 msleep(1000);   /* sleep for 1s */
3800
3801         rval = mega_do_del_logdrv(adapter, logdrv);
3802
3803         spin_lock_irqsave(&adapter->lock, flags);
3804
3805         /*
3806          * If delete operation was successful, add 0x80 to the logical drive
3807          * ids for commands in the pending queue.
3808          */
3809         if (adapter->read_ldidmap) {
3810                 struct list_head *pos;
3811                 list_for_each(pos, &adapter->pending_list) {
3812                         scb = list_entry(pos, scb_t, list);
3813                         if (scb->pthru->logdrv < 0x80 )
3814                                 scb->pthru->logdrv += 0x80;
3815                 }
3816         }
3817
3818         atomic_set(&adapter->quiescent, 0);
3819
3820         mega_runpendq(adapter);
3821
3822         spin_unlock_irqrestore(&adapter->lock, flags);
3823
3824         return rval;
3825 }
3826
3827
3828 static int
3829 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3830 {
3831         megacmd_t       mc;
3832         int     rval;
3833
3834         memset( &mc, 0, sizeof(megacmd_t));
3835
3836         mc.cmd = FC_DEL_LOGDRV;
3837         mc.opcode = OP_DEL_LOGDRV;
3838         mc.subopcode = logdrv;
3839
3840         rval = mega_internal_command(adapter, &mc, NULL);
3841
3842         /* log this event */
3843         if(rval) {
3844                 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3845                 return rval;
3846         }
3847
3848         /*
3849          * After deleting first logical drive, the logical drives must be
3850          * addressed by adding 0x80 to the logical drive id.
3851          */
3852         adapter->read_ldidmap = 1;
3853
3854         return rval;
3855 }
3856
3857
3858 /**
3859  * mega_get_max_sgl()
3860  * @adapter: pointer to our soft state
3861  *
3862  * Find out the maximum number of scatter-gather elements supported by this
3863  * version of the firmware
3864  */
3865 static void
3866 mega_get_max_sgl(adapter_t *adapter)
3867 {
3868         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3869         mbox_t  *mbox;
3870
3871         mbox = (mbox_t *)raw_mbox;
3872
3873         memset(mbox, 0, sizeof(raw_mbox));
3874
3875         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3876
3877         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3878
3879         raw_mbox[0] = MAIN_MISC_OPCODE;
3880         raw_mbox[2] = GET_MAX_SG_SUPPORT;
3881
3882
3883         if( issue_scb_block(adapter, raw_mbox) ) {
3884                 /*
3885                  * f/w does not support this command. Choose the default value
3886                  */
3887                 adapter->sglen = MIN_SGLIST;
3888         }
3889         else {
3890                 adapter->sglen = *((char *)adapter->mega_buffer);
3891
3892                 /*
3893                  * Make sure this is not more than the resources we are
3894                  * planning to allocate
3895                  */
3896                 if ( adapter->sglen > MAX_SGLIST )
3897                         adapter->sglen = MAX_SGLIST;
3898         }
3899
3900         return;
3901 }
3902
3903
3904 /**
3905  * mega_support_cluster()
3906  * @adapter: pointer to our soft state
3907  *
3908  * Find out if this firmware support cluster calls.
3909  */
3910 static int
3911 mega_support_cluster(adapter_t *adapter)
3912 {
3913         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3914         mbox_t  *mbox;
3915
3916         mbox = (mbox_t *)raw_mbox;
3917
3918         memset(mbox, 0, sizeof(raw_mbox));
3919
3920         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3921
3922         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3923
3924         /*
3925          * Try to get the initiator id. This command will succeed iff the
3926          * clustering is available on this HBA.
3927          */
3928         raw_mbox[0] = MEGA_GET_TARGET_ID;
3929
3930         if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3931
3932                 /*
3933                  * Cluster support available. Get the initiator target id.
3934                  * Tell our id to mid-layer too.
3935                  */
3936                 adapter->this_id = *(u32 *)adapter->mega_buffer;
3937                 adapter->host->this_id = adapter->this_id;
3938
3939                 return 1;
3940         }
3941
3942         return 0;
3943 }
3944
3945 #ifdef CONFIG_PROC_FS
3946 /**
3947  * mega_adapinq()
3948  * @adapter: pointer to our soft state
3949  * @dma_handle: DMA address of the buffer
3950  *
3951  * Issue internal commands while interrupts are available.
3952  * We only issue direct mailbox commands from within the driver. ioctl()
3953  * interface using these routines can issue passthru commands.
3954  */
3955 static int
3956 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
3957 {
3958         megacmd_t       mc;
3959
3960         memset(&mc, 0, sizeof(megacmd_t));
3961
3962         if( adapter->flag & BOARD_40LD ) {
3963                 mc.cmd = FC_NEW_CONFIG;
3964                 mc.opcode = NC_SUBOP_ENQUIRY3;
3965                 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
3966         }
3967         else {
3968                 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
3969         }
3970
3971         mc.xferaddr = (u32)dma_handle;
3972
3973         if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
3974                 return -1;
3975         }
3976
3977         return 0;
3978 }
3979
3980
3981 /**
3982  * mega_internal_dev_inquiry()
3983  * @adapter: pointer to our soft state
3984  * @ch: channel for this device
3985  * @tgt: ID of this device
3986  * @buf_dma_handle: DMA address of the buffer
3987  *
3988  * Issue the scsi inquiry for the specified device.
3989  */
3990 static int
3991 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
3992                 dma_addr_t buf_dma_handle)
3993 {
3994         mega_passthru   *pthru;
3995         dma_addr_t      pthru_dma_handle;
3996         megacmd_t       mc;
3997         int             rval;
3998         struct pci_dev  *pdev;
3999
4000
4001         /*
4002          * For all internal commands, the buffer must be allocated in <4GB
4003          * address range
4004          */
4005         if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4006
4007         pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru),
4008                                    &pthru_dma_handle, GFP_KERNEL);
4009
4010         if( pthru == NULL ) {
4011                 free_local_pdev(pdev);
4012                 return -1;
4013         }
4014
4015         pthru->timeout = 2;
4016         pthru->ars = 1;
4017         pthru->reqsenselen = 14;
4018         pthru->islogical = 0;
4019
4020         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4021
4022         pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4023
4024         pthru->cdblen = 6;
4025
4026         pthru->cdb[0] = INQUIRY;
4027         pthru->cdb[1] = 0;
4028         pthru->cdb[2] = 0;
4029         pthru->cdb[3] = 0;
4030         pthru->cdb[4] = 255;
4031         pthru->cdb[5] = 0;
4032
4033
4034         pthru->dataxferaddr = (u32)buf_dma_handle;
4035         pthru->dataxferlen = 256;
4036
4037         memset(&mc, 0, sizeof(megacmd_t));
4038
4039         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4040         mc.xferaddr = (u32)pthru_dma_handle;
4041
4042         rval = mega_internal_command(adapter, &mc, pthru);
4043
4044         dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru,
4045                           pthru_dma_handle);
4046
4047         free_local_pdev(pdev);
4048
4049         return rval;
4050 }
4051 #endif
4052
4053 /**
4054  * mega_internal_command()
4055  * @adapter: pointer to our soft state
4056  * @mc: the mailbox command
4057  * @pthru: Passthru structure for DCDB commands
4058  *
4059  * Issue the internal commands in interrupt mode.
4060  * The last argument is the address of the passthru structure if the command
4061  * to be fired is a passthru command
4062  *
4063  * Note: parameter 'pthru' is null for non-passthru commands.
4064  */
4065 static int
4066 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4067 {
4068         unsigned long flags;
4069         scb_t   *scb;
4070         int     rval;
4071
4072         /*
4073          * The internal commands share one command id and hence are
4074          * serialized. This is so because we want to reserve maximum number of
4075          * available command ids for the I/O commands.
4076          */
4077         mutex_lock(&adapter->int_mtx);
4078
4079         scb = &adapter->int_scb;
4080         memset(scb, 0, sizeof(scb_t));
4081
4082         scb->idx = CMDID_INT_CMDS;
4083         scb->state |= SCB_ACTIVE | SCB_PENDQ;
4084
4085         memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4086
4087         /*
4088          * Is it a passthru command
4089          */
4090         if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4091                 scb->pthru = pthru;
4092
4093         spin_lock_irqsave(&adapter->lock, flags);
4094         list_add_tail(&scb->list, &adapter->pending_list);
4095         /*
4096          * Check if the HBA is in quiescent state, e.g., during a
4097          * delete logical drive opertion. If it is, don't run
4098          * the pending_list.
4099          */
4100         if (atomic_read(&adapter->quiescent) == 0)
4101                 mega_runpendq(adapter);
4102         spin_unlock_irqrestore(&adapter->lock, flags);
4103
4104         wait_for_completion(&adapter->int_waitq);
4105
4106         mc->status = rval = adapter->int_status;
4107
4108         /*
4109          * Print a debug message for all failed commands. Applications can use
4110          * this information.
4111          */
4112         if (rval && trace_level) {
4113                 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4114                         mc->cmd, mc->opcode, mc->subopcode, rval);
4115         }
4116
4117         mutex_unlock(&adapter->int_mtx);
4118         return rval;
4119 }
4120
4121 static struct scsi_host_template megaraid_template = {
4122         .module                         = THIS_MODULE,
4123         .name                           = "MegaRAID",
4124         .proc_name                      = "megaraid_legacy",
4125         .info                           = megaraid_info,
4126         .queuecommand                   = megaraid_queue,
4127         .bios_param                     = megaraid_biosparam,
4128         .max_sectors                    = MAX_SECTORS_PER_IO,
4129         .can_queue                      = MAX_COMMANDS,
4130         .this_id                        = DEFAULT_INITIATOR_ID,
4131         .sg_tablesize                   = MAX_SGLIST,
4132         .cmd_per_lun                    = DEF_CMD_PER_LUN,
4133         .eh_abort_handler               = megaraid_abort,
4134         .eh_device_reset_handler        = megaraid_reset,
4135         .eh_bus_reset_handler           = megaraid_reset,
4136         .eh_host_reset_handler          = megaraid_reset,
4137         .no_write_same                  = 1,
4138 };
4139
4140 static int
4141 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4142 {
4143         struct Scsi_Host *host;
4144         adapter_t *adapter;
4145         unsigned long mega_baseport, tbase, flag = 0;
4146         u16 subsysid, subsysvid;
4147         u8 pci_bus, pci_dev_func;
4148         int irq, i, j;
4149         int error = -ENODEV;
4150
4151         if (hba_count >= MAX_CONTROLLERS)
4152                 goto out;
4153
4154         if (pci_enable_device(pdev))
4155                 goto out;
4156         pci_set_master(pdev);
4157
4158         pci_bus = pdev->bus->number;
4159         pci_dev_func = pdev->devfn;
4160
4161         /*
4162          * The megaraid3 stuff reports the ID of the Intel part which is not
4163          * remotely specific to the megaraid
4164          */
4165         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4166                 u16 magic;
4167                 /*
4168                  * Don't fall over the Compaq management cards using the same
4169                  * PCI identifier
4170                  */
4171                 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4172                     pdev->subsystem_device == 0xC000)
4173                         goto out_disable_device;
4174                 /* Now check the magic signature byte */
4175                 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4176                 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4177                         goto out_disable_device;
4178                 /* Ok it is probably a megaraid */
4179         }
4180
4181         /*
4182          * For these vendor and device ids, signature offsets are not
4183          * valid and 64 bit is implicit
4184          */
4185         if (id->driver_data & BOARD_64BIT)
4186                 flag |= BOARD_64BIT;
4187         else {
4188                 u32 magic64;
4189
4190                 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4191                 if (magic64 == HBA_SIGNATURE_64BIT)
4192                         flag |= BOARD_64BIT;
4193         }
4194
4195         subsysvid = pdev->subsystem_vendor;
4196         subsysid = pdev->subsystem_device;
4197
4198         dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4199                 id->vendor, id->device);
4200
4201         /* Read the base port and IRQ from PCI */
4202         mega_baseport = pci_resource_start(pdev, 0);
4203         irq = pdev->irq;
4204
4205         tbase = mega_baseport;
4206         if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4207                 flag |= BOARD_MEMMAP;
4208
4209                 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4210                         dev_warn(&pdev->dev, "mem region busy!\n");
4211                         goto out_disable_device;
4212                 }
4213
4214                 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4215                 if (!mega_baseport) {
4216                         dev_warn(&pdev->dev, "could not map hba memory\n");
4217                         goto out_release_region;
4218                 }
4219         } else {
4220                 flag |= BOARD_IOMAP;
4221                 mega_baseport += 0x10;
4222
4223                 if (!request_region(mega_baseport, 16, "megaraid"))
4224                         goto out_disable_device;
4225         }
4226
4227         /* Initialize SCSI Host structure */
4228         host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4229         if (!host)
4230                 goto out_iounmap;
4231
4232         adapter = (adapter_t *)host->hostdata;
4233         memset(adapter, 0, sizeof(adapter_t));
4234
4235         dev_notice(&pdev->dev,
4236                 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4237                 host->host_no, mega_baseport, irq);
4238
4239         adapter->base = mega_baseport;
4240         if (flag & BOARD_MEMMAP)
4241                 adapter->mmio_base = (void __iomem *) mega_baseport;
4242
4243         INIT_LIST_HEAD(&adapter->free_list);
4244         INIT_LIST_HEAD(&adapter->pending_list);
4245         INIT_LIST_HEAD(&adapter->completed_list);
4246
4247         adapter->flag = flag;
4248         spin_lock_init(&adapter->lock);
4249
4250         host->cmd_per_lun = max_cmd_per_lun;
4251         host->max_sectors = max_sectors_per_io;
4252
4253         adapter->dev = pdev;
4254         adapter->host = host;
4255
4256         adapter->host->irq = irq;
4257
4258         if (flag & BOARD_MEMMAP)
4259                 adapter->host->base = tbase;
4260         else {
4261                 adapter->host->io_port = tbase;
4262                 adapter->host->n_io_port = 16;
4263         }
4264
4265         adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4266
4267         /*
4268          * Allocate buffer to issue internal commands.
4269          */
4270         adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev,
4271                                                   MEGA_BUFFER_SIZE,
4272                                                   &adapter->buf_dma_handle,
4273                                                   GFP_KERNEL);
4274         if (!adapter->mega_buffer) {
4275                 dev_warn(&pdev->dev, "out of RAM\n");
4276                 goto out_host_put;
4277         }
4278
4279         adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t),
4280                                           GFP_KERNEL);
4281         if (!adapter->scb_list) {
4282                 dev_warn(&pdev->dev, "out of RAM\n");
4283                 goto out_free_cmd_buffer;
4284         }
4285
4286         if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4287                                 megaraid_isr_memmapped : megaraid_isr_iomapped,
4288                                         IRQF_SHARED, "megaraid", adapter)) {
4289                 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4290                 goto out_free_scb_list;
4291         }
4292
4293         if (mega_setup_mailbox(adapter))
4294                 goto out_free_irq;
4295
4296         if (mega_query_adapter(adapter))
4297                 goto out_free_mbox;
4298
4299         /*
4300          * Have checks for some buggy f/w
4301          */
4302         if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4303                 /*
4304                  * Which firmware
4305                  */
4306                 if (!strcmp(adapter->fw_version, "3.00") ||
4307                                 !strcmp(adapter->fw_version, "3.01")) {
4308
4309                         dev_warn(&pdev->dev,
4310                                 "Your card is a Dell PERC "
4311                                 "2/SC RAID controller with "
4312                                 "firmware\nmegaraid: 3.00 or 3.01.  "
4313                                 "This driver is known to have "
4314                                 "corruption issues\nmegaraid: with "
4315                                 "those firmware versions on this "
4316                                 "specific card.  In order\nmegaraid: "
4317                                 "to protect your data, please upgrade "
4318                                 "your firmware to version\nmegaraid: "
4319                                 "3.10 or later, available from the "
4320                                 "Dell Technical Support web\n"
4321                                 "megaraid: site at\nhttp://support."
4322                                 "dell.com/us/en/filelib/download/"
4323                                 "index.asp?fileid=2940\n"
4324                         );
4325                 }
4326         }
4327
4328         /*
4329          * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4330          * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4331          * support, since this firmware cannot handle 64 bit
4332          * addressing
4333          */
4334         if ((subsysvid == PCI_VENDOR_ID_HP) &&
4335             ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4336                 /*
4337                  * which firmware
4338                  */
4339                 if (!strcmp(adapter->fw_version, "H01.07") ||
4340                     !strcmp(adapter->fw_version, "H01.08") ||
4341                     !strcmp(adapter->fw_version, "H01.09") ) {
4342                         dev_warn(&pdev->dev,
4343                                 "Firmware H.01.07, "
4344                                 "H.01.08, and H.01.09 on 1M/2M "
4345                                 "controllers\n"
4346                                 "do not support 64 bit "
4347                                 "addressing.\nDISABLING "
4348                                 "64 bit support.\n");
4349                         adapter->flag &= ~BOARD_64BIT;
4350                 }
4351         }
4352
4353         if (mega_is_bios_enabled(adapter))
4354                 mega_hbas[hba_count].is_bios_enabled = 1;
4355         mega_hbas[hba_count].hostdata_addr = adapter;
4356
4357         /*
4358          * Find out which channel is raid and which is scsi. This is
4359          * for ROMB support.
4360          */
4361         mega_enum_raid_scsi(adapter);
4362
4363         /*
4364          * Find out if a logical drive is set as the boot drive. If
4365          * there is one, will make that as the first logical drive.
4366          * ROMB: Do we have to boot from a physical drive. Then all
4367          * the physical drives would appear before the logical disks.
4368          * Else, all the physical drives would be exported to the mid
4369          * layer after logical drives.
4370          */
4371         mega_get_boot_drv(adapter);
4372
4373         if (adapter->boot_pdrv_enabled) {
4374                 j = adapter->product_info.nchannels;
4375                 for( i = 0; i < j; i++ )
4376                         adapter->logdrv_chan[i] = 0;
4377                 for( i = j; i < NVIRT_CHAN + j; i++ )
4378                         adapter->logdrv_chan[i] = 1;
4379         } else {
4380                 for (i = 0; i < NVIRT_CHAN; i++)
4381                         adapter->logdrv_chan[i] = 1;
4382                 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4383                         adapter->logdrv_chan[i] = 0;
4384                 adapter->mega_ch_class <<= NVIRT_CHAN;
4385         }
4386
4387         /*
4388          * Do we support random deletion and addition of logical
4389          * drives
4390          */
4391         adapter->read_ldidmap = 0;      /* set it after first logdrv
4392                                                    delete cmd */
4393         adapter->support_random_del = mega_support_random_del(adapter);
4394
4395         /* Initialize SCBs */
4396         if (mega_init_scb(adapter))
4397                 goto out_free_mbox;
4398
4399         /*
4400          * Reset the pending commands counter
4401          */
4402         atomic_set(&adapter->pend_cmds, 0);
4403
4404         /*
4405          * Reset the adapter quiescent flag
4406          */
4407         atomic_set(&adapter->quiescent, 0);
4408
4409         hba_soft_state[hba_count] = adapter;
4410
4411         /*
4412          * Fill in the structure which needs to be passed back to the
4413          * application when it does an ioctl() for controller related
4414          * information.
4415          */
4416         i = hba_count;
4417
4418         mcontroller[i].base = mega_baseport;
4419         mcontroller[i].irq = irq;
4420         mcontroller[i].numldrv = adapter->numldrv;
4421         mcontroller[i].pcibus = pci_bus;
4422         mcontroller[i].pcidev = id->device;
4423         mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4424         mcontroller[i].pciid = -1;
4425         mcontroller[i].pcivendor = id->vendor;
4426         mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4427         mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4428
4429
4430         /* Set the Mode of addressing to 64 bit if we can */
4431         if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4432                 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
4433                 adapter->has_64bit_addr = 1;
4434         } else  {
4435                 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
4436                 adapter->has_64bit_addr = 0;
4437         }
4438
4439         mutex_init(&adapter->int_mtx);
4440         init_completion(&adapter->int_waitq);
4441
4442         adapter->this_id = DEFAULT_INITIATOR_ID;
4443         adapter->host->this_id = DEFAULT_INITIATOR_ID;
4444
4445 #if MEGA_HAVE_CLUSTERING
4446         /*
4447          * Is cluster support enabled on this controller
4448          * Note: In a cluster the HBAs ( the initiators ) will have
4449          * different target IDs and we cannot assume it to be 7. Call
4450          * to mega_support_cluster() will get the target ids also if
4451          * the cluster support is available
4452          */
4453         adapter->has_cluster = mega_support_cluster(adapter);
4454         if (adapter->has_cluster) {
4455                 dev_notice(&pdev->dev,
4456                         "Cluster driver, initiator id:%d\n",
4457                         adapter->this_id);
4458         }
4459 #endif
4460
4461         pci_set_drvdata(pdev, host);
4462
4463         mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4464
4465         error = scsi_add_host(host, &pdev->dev);
4466         if (error)
4467                 goto out_free_mbox;
4468
4469         scsi_scan_host(host);
4470         hba_count++;
4471         return 0;
4472
4473  out_free_mbox:
4474         dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),
4475                           adapter->una_mbox64, adapter->una_mbox64_dma);
4476  out_free_irq:
4477         free_irq(adapter->host->irq, adapter);
4478  out_free_scb_list:
4479         kfree(adapter->scb_list);
4480  out_free_cmd_buffer:
4481         dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,
4482                           adapter->mega_buffer, adapter->buf_dma_handle);
4483  out_host_put:
4484         scsi_host_put(host);
4485  out_iounmap:
4486         if (flag & BOARD_MEMMAP)
4487                 iounmap((void *)mega_baseport);
4488  out_release_region:
4489         if (flag & BOARD_MEMMAP)
4490                 release_mem_region(tbase, 128);
4491         else
4492                 release_region(mega_baseport, 16);
4493  out_disable_device:
4494         pci_disable_device(pdev);
4495  out:
4496         return error;
4497 }
4498
4499 static void
4500 __megaraid_shutdown(adapter_t *adapter)
4501 {
4502         u_char  raw_mbox[sizeof(struct mbox_out)];
4503         mbox_t  *mbox = (mbox_t *)raw_mbox;
4504         int     i;
4505
4506         /* Flush adapter cache */
4507         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4508         raw_mbox[0] = FLUSH_ADAPTER;
4509
4510         free_irq(adapter->host->irq, adapter);
4511
4512         /* Issue a blocking (interrupts disabled) command to the card */
4513         issue_scb_block(adapter, raw_mbox);
4514
4515         /* Flush disks cache */
4516         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4517         raw_mbox[0] = FLUSH_SYSTEM;
4518
4519         /* Issue a blocking (interrupts disabled) command to the card */
4520         issue_scb_block(adapter, raw_mbox);
4521
4522         if (atomic_read(&adapter->pend_cmds) > 0)
4523                 dev_warn(&adapter->dev->dev, "pending commands!!\n");
4524
4525         /*
4526          * Have a delibrate delay to make sure all the caches are
4527          * actually flushed.
4528          */
4529         for (i = 0; i <= 10; i++)
4530                 mdelay(1000);
4531 }
4532
4533 static void
4534 megaraid_remove_one(struct pci_dev *pdev)
4535 {
4536         struct Scsi_Host *host = pci_get_drvdata(pdev);
4537         adapter_t *adapter = (adapter_t *)host->hostdata;
4538         char buf[12] = { 0 };
4539
4540         scsi_remove_host(host);
4541
4542         __megaraid_shutdown(adapter);
4543
4544         /* Free our resources */
4545         if (adapter->flag & BOARD_MEMMAP) {
4546                 iounmap((void *)adapter->base);
4547                 release_mem_region(adapter->host->base, 128);
4548         } else
4549                 release_region(adapter->base, 16);
4550
4551         mega_free_sgl(adapter);
4552
4553         sprintf(buf, "hba%d", adapter->host->host_no);
4554         remove_proc_subtree(buf, mega_proc_dir_entry);
4555
4556         dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,
4557                           adapter->mega_buffer, adapter->buf_dma_handle);
4558         kfree(adapter->scb_list);
4559         dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),
4560                           adapter->una_mbox64, adapter->una_mbox64_dma);
4561
4562         scsi_host_put(host);
4563         pci_disable_device(pdev);
4564
4565         hba_count--;
4566 }
4567
4568 static void
4569 megaraid_shutdown(struct pci_dev *pdev)
4570 {
4571         struct Scsi_Host *host = pci_get_drvdata(pdev);
4572         adapter_t *adapter = (adapter_t *)host->hostdata;
4573
4574         __megaraid_shutdown(adapter);
4575 }
4576
4577 static struct pci_device_id megaraid_pci_tbl[] = {
4578         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4579                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4580         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4581                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4582         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4583                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4584         {0,}
4585 };
4586 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4587
4588 static struct pci_driver megaraid_pci_driver = {
4589         .name           = "megaraid_legacy",
4590         .id_table       = megaraid_pci_tbl,
4591         .probe          = megaraid_probe_one,
4592         .remove         = megaraid_remove_one,
4593         .shutdown       = megaraid_shutdown,
4594 };
4595
4596 static int __init megaraid_init(void)
4597 {
4598         int error;
4599
4600         if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4601                 max_cmd_per_lun = MAX_CMD_PER_LUN;
4602         if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4603                 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4604
4605 #ifdef CONFIG_PROC_FS
4606         mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4607         if (!mega_proc_dir_entry) {
4608                 printk(KERN_WARNING
4609                                 "megaraid: failed to create megaraid root\n");
4610         }
4611 #endif
4612         error = pci_register_driver(&megaraid_pci_driver);
4613         if (error) {
4614 #ifdef CONFIG_PROC_FS
4615                 remove_proc_entry("megaraid", NULL);
4616 #endif
4617                 return error;
4618         }
4619
4620         /*
4621          * Register the driver as a character device, for applications
4622          * to access it for ioctls.
4623          * First argument (major) to register_chrdev implies a dynamic
4624          * major number allocation.
4625          */
4626         major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4627         if (!major) {
4628                 printk(KERN_WARNING
4629                                 "megaraid: failed to register char device\n");
4630         }
4631
4632         return 0;
4633 }
4634
4635 static void __exit megaraid_exit(void)
4636 {
4637         /*
4638          * Unregister the character device interface to the driver.
4639          */
4640         unregister_chrdev(major, "megadev_legacy");
4641
4642         pci_unregister_driver(&megaraid_pci_driver);
4643
4644 #ifdef CONFIG_PROC_FS
4645         remove_proc_entry("megaraid", NULL);
4646 #endif
4647 }
4648
4649 module_init(megaraid_init);
4650 module_exit(megaraid_exit);
4651
4652 /* vi: set ts=8 sw=8 tw=78: */