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