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   1 /*
   2  *
   3  *                      Linux MegaRAID device driver
   4  *
   5  * Copyright (c) 2002  LSI Logic Corporation.
   6  *
   7  *         This program is free software; you can redistribute it and/or
   8  *         modify it under the terms of the GNU General Public License
   9  *         as published by the Free Software Foundation; either version
  10  *         2 of the License, or (at your option) any later version.
  11  *
  12  * Copyright (c) 2002  Red Hat, Inc. All rights reserved.
  13  *        - fixes
  14  *        - speed-ups (list handling fixes, issued_list, optimizations.)
  15  *        - lots of cleanups.
  16  *
  17  * Copyright (c) 2003  Christoph Hellwig  <hch@lst.de>
  18  *        - new-style, hotplug-aware pci probing and scsi registration
  19  *
  20  * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
  21  *                                              <Seokmann.Ju@lsil.com>
  22  *
  23  * Description: Linux device driver for LSI Logic MegaRAID controller
  24  *
  25  * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
  26  *                                      518, 520, 531, 532
  27  *
  28  * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
  29  * and others. Please send updates to the mailing list
  30  * linux-scsi@vger.kernel.org .
  31  *
  32  */
  33
  34 #include <linux/mm.h>
  35 #include <linux/fs.h>
  36 #include <linux/blkdev.h>
  37 #include <asm/uaccess.h>
  38 #include <asm/io.h>
  39 #include <linux/completion.h>
  40 #include <linux/delay.h>
  41 #include <linux/proc_fs.h>
  42 #include <linux/reboot.h>
  43 #include <linux/module.h>
  44 #include <linux/list.h>
  45 #include <linux/interrupt.h>
  46 #include <linux/pci.h>
  47 #include <linux/init.h>
  48 #include <linux/dma-mapping.h>
  49 #include <scsi/scsicam.h>
  50
  51 #include "scsi.h"
  52 #include <scsi/scsi_host.h>
  53
  54 #include "megaraid.h"
  55
  56 #define MEGARAID_MODULE_VERSION "2.00.4"
  57
  58 MODULE_AUTHOR ("sju@lsil.com");
  59 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
  60 MODULE_LICENSE ("GPL");
  61 MODULE_VERSION(MEGARAID_MODULE_VERSION);
  62
  63 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
  64 module_param(max_cmd_per_lun, uint, 0);
  65 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)");
  66
  67 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
  68 module_param(max_sectors_per_io, ushort, 0);
  69 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
  70
  71
  72 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
  73 module_param(max_mbox_busy_wait, ushort, 0);
  74 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
  75
  76 #define RDINDOOR(adapter)               readl((adapter)->base + 0x20)
  77 #define RDOUTDOOR(adapter)              readl((adapter)->base + 0x2C)
  78 #define WRINDOOR(adapter,value)         writel(value, (adapter)->base + 0x20)
  79 #define WROUTDOOR(adapter,value)        writel(value, (adapter)->base + 0x2C)
  80
  81 /*
  82  * Global variables
  83  */
  84
  85 static int hba_count;
  86 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
  87 static struct proc_dir_entry *mega_proc_dir_entry;
  88
  89 /* For controller re-ordering */
  90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
  91
  92 /*
  93  * The File Operations structure for the serial/ioctl interface of the driver
  94  */
  95 static struct file_operations megadev_fops = {
  96         .owner          = THIS_MODULE,
  97         .ioctl          = megadev_ioctl,
  98         .open           = megadev_open,
  99 };
 100
 101 /*
 102  * Array to structures for storing the information about the controllers. This
 103  * information is sent to the user level applications, when they do an ioctl
 104  * for this information.
 105  */
 106 static struct mcontroller mcontroller[MAX_CONTROLLERS];
 107
 108 /* The current driver version */
 109 static u32 driver_ver = 0x02000000;
 110
 111 /* major number used by the device for character interface */
 112 static int major;
 113
 114 #define IS_RAID_CH(hba, ch)     (((hba)->mega_ch_class >> (ch)) & 0x01)
 115
 116
 117 /*
 118  * Debug variable to print some diagnostic messages
 119  */
 120 static int trace_level;
 121
 122 /**
 123  * mega_setup_mailbox()
 124  * @adapter - pointer to our soft state
 125  *
 126  * Allocates a 8 byte aligned memory for the handshake mailbox.
 127  */
 128 static int
 129 mega_setup_mailbox(adapter_t *adapter)
 130 {
 131         unsigned long   align;
 132
 133         adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
 134                         sizeof(mbox64_t), &adapter->una_mbox64_dma);
 135
 136         if( !adapter->una_mbox64 ) return -1;
 137
 138         adapter->mbox = &adapter->una_mbox64->mbox;
 139
 140         adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
 141                         (~0UL ^ 0xFUL));
 142
 143         adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
 144
 145         align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
 146
 147         adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
 148
 149         /*
 150          * Register the mailbox if the controller is an io-mapped controller
 151          */
 152         if( adapter->flag & BOARD_IOMAP ) {
 153
 154                 outb_p(adapter->mbox_dma & 0xFF,
 155                                 adapter->host->io_port + MBOX_PORT0);
 156
 157                 outb_p((adapter->mbox_dma >> 8) & 0xFF,
 158                                 adapter->host->io_port + MBOX_PORT1);
 159
 160                 outb_p((adapter->mbox_dma >> 16) & 0xFF,
 161                                 adapter->host->io_port + MBOX_PORT2);
 162
 163                 outb_p((adapter->mbox_dma >> 24) & 0xFF,
 164                                 adapter->host->io_port + MBOX_PORT3);
 165
 166                 outb_p(ENABLE_MBOX_BYTE,
 167                                 adapter->host->io_port + ENABLE_MBOX_REGION);
 168
 169                 irq_ack(adapter);
 170
 171                 irq_enable(adapter);
 172         }
 173
 174         return 0;
 175 }
 176
 177
 178 /*
 179  * mega_query_adapter()
 180  * @adapter - pointer to our soft state
 181  *
 182  * Issue the adapter inquiry commands to the controller and find out
 183  * information and parameter about the devices attached
 184  */
 185 static int
 186 mega_query_adapter(adapter_t *adapter)
 187 {
 188         dma_addr_t      prod_info_dma_handle;
 189         mega_inquiry3   *inquiry3;
 190         u8      raw_mbox[sizeof(struct mbox_out)];
 191         mbox_t  *mbox;
 192         int     retval;
 193
 194         /* Initialize adapter inquiry mailbox */
 195
 196         mbox = (mbox_t *)raw_mbox;
 197
 198         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
 199         memset(&mbox->m_out, 0, sizeof(raw_mbox));
 200
 201         /*
 202          * Try to issue Inquiry3 command
 203          * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
 204          * update enquiry3 structure
 205          */
 206         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
 207
 208         inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
 209
 210         raw_mbox[0] = FC_NEW_CONFIG;            /* i.e. mbox->cmd=0xA1 */
 211         raw_mbox[2] = NC_SUBOP_ENQUIRY3;        /* i.e. 0x0F */
 212         raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;  /* i.e. 0x02 */
 213
 214         /* Issue a blocking command to the card */
 215         if ((retval = issue_scb_block(adapter, raw_mbox))) {
 216                 /* the adapter does not support 40ld */
 217
 218                 mraid_ext_inquiry       *ext_inq;
 219                 mraid_inquiry           *inq;
 220                 dma_addr_t              dma_handle;
 221
 222                 ext_inq = pci_alloc_consistent(adapter->dev,
 223                                 sizeof(mraid_ext_inquiry), &dma_handle);
 224
 225                 if( ext_inq == NULL ) return -1;
 226
 227                 inq = &ext_inq->raid_inq;
 228
 229                 mbox->m_out.xferaddr = (u32)dma_handle;
 230
 231                 /*issue old 0x04 command to adapter */
 232                 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
 233
 234                 issue_scb_block(adapter, raw_mbox);
 235
 236                 /*
 237                  * update Enquiry3 and ProductInfo structures with
 238                  * mraid_inquiry structure
 239                  */
 240                 mega_8_to_40ld(inq, inquiry3,
 241                                 (mega_product_info *)&adapter->product_info);
 242
 243                 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
 244                                 ext_inq, dma_handle);
 245
 246         } else {                /*adapter supports 40ld */
 247                 adapter->flag |= BOARD_40LD;
 248
 249                 /*
 250                  * get product_info, which is static information and will be
 251                  * unchanged
 252                  */
 253                 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
 254                                 &adapter->product_info,
 255                                 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 256
 257                 mbox->m_out.xferaddr = prod_info_dma_handle;
 258
 259                 raw_mbox[0] = FC_NEW_CONFIG;    /* i.e. mbox->cmd=0xA1 */
 260                 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;    /* i.e. 0x0E */
 261
 262                 if ((retval = issue_scb_block(adapter, raw_mbox)))
 263                         printk(KERN_WARNING
 264                         "megaraid: Product_info cmd failed with error: %d\n",
 265                                 retval);
 266
 267                 pci_unmap_single(adapter->dev, prod_info_dma_handle,
 268                                 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 269         }
 270
 271
 272         /*
 273          * kernel scans the channels from 0 to <= max_channel
 274          */
 275         adapter->host->max_channel =
 276                 adapter->product_info.nchannels + NVIRT_CHAN -1;
 277
 278         adapter->host->max_id = 16;     /* max targets per channel */
 279
 280         adapter->host->max_lun = 7;     /* Upto 7 luns for non disk devices */
 281
 282         adapter->host->cmd_per_lun = max_cmd_per_lun;
 283
 284         adapter->numldrv = inquiry3->num_ldrv;
 285
 286         adapter->max_cmds = adapter->product_info.max_commands;
 287
 288         if(adapter->max_cmds > MAX_COMMANDS)
 289                 adapter->max_cmds = MAX_COMMANDS;
 290
 291         adapter->host->can_queue = adapter->max_cmds - 1;
 292
 293         /*
 294          * Get the maximum number of scatter-gather elements supported by this
 295          * firmware
 296          */
 297         mega_get_max_sgl(adapter);
 298
 299         adapter->host->sg_tablesize = adapter->sglen;
 300
 301
 302         /* use HP firmware and bios version encoding */
 303         if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
 304                 sprintf (adapter->fw_version, "%c%d%d.%d%d",
 305                          adapter->product_info.fw_version[2],
 306                          adapter->product_info.fw_version[1] >> 8,
 307                          adapter->product_info.fw_version[1] & 0x0f,
 308                          adapter->product_info.fw_version[0] >> 8,
 309                          adapter->product_info.fw_version[0] & 0x0f);
 310                 sprintf (adapter->bios_version, "%c%d%d.%d%d",
 311                          adapter->product_info.bios_version[2],
 312                          adapter->product_info.bios_version[1] >> 8,
 313                          adapter->product_info.bios_version[1] & 0x0f,
 314                          adapter->product_info.bios_version[0] >> 8,
 315                          adapter->product_info.bios_version[0] & 0x0f);
 316         } else {
 317                 memcpy(adapter->fw_version,
 318                                 (char *)adapter->product_info.fw_version, 4);
 319                 adapter->fw_version[4] = 0;
 320
 321                 memcpy(adapter->bios_version,
 322                                 (char *)adapter->product_info.bios_version, 4);
 323
 324                 adapter->bios_version[4] = 0;
 325         }
 326
 327         printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
 328                 adapter->fw_version, adapter->bios_version, adapter->numldrv);
 329
 330         /*
 331          * Do we support extended (>10 bytes) cdbs
 332          */
 333         adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
 334         if (adapter->support_ext_cdb)
 335                 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
 336
 337
 338         return 0;
 339 }
 340
 341 /**
 342  * mega_runpendq()
 343  * @adapter - pointer to our soft state
 344  *
 345  * Runs through the list of pending requests.
 346  */
 347 static inline void
 348 mega_runpendq(adapter_t *adapter)
 349 {
 350         if(!list_empty(&adapter->pending_list))
 351                 __mega_runpendq(adapter);
 352 }
 353
 354 /*
 355  * megaraid_queue()
 356  * @scmd - Issue this scsi command
 357  * @done - the callback hook into the scsi mid-layer
 358  *
 359  * The command queuing entry point for the mid-layer.
 360  */
 361 static int
 362 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
 363 {
 364         adapter_t       *adapter;
 365         scb_t   *scb;
 366         int     busy=0;
 367         unsigned long flags;
 368
 369         adapter = (adapter_t *)scmd->device->host->hostdata;
 370
 371         scmd->scsi_done = done;
 372
 373
 374         /*
 375          * Allocate and build a SCB request
 376          * busy flag will be set if mega_build_cmd() command could not
 377          * allocate scb. We will return non-zero status in that case.
 378          * NOTE: scb can be null even though certain commands completed
 379          * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
 380          * return 0 in that case.
 381          */
 382
 383         spin_lock_irqsave(&adapter->lock, flags);
 384         scb = mega_build_cmd(adapter, scmd, &busy);
 385         if (!scb)
 386                 goto out;
 387
 388         scb->state |= SCB_PENDQ;
 389         list_add_tail(&scb->list, &adapter->pending_list);
 390
 391         /*
 392          * Check if the HBA is in quiescent state, e.g., during a
 393          * delete logical drive opertion. If it is, don't run
 394          * the pending_list.
 395          */
 396         if (atomic_read(&adapter->quiescent) == 0)
 397                 mega_runpendq(adapter);
 398
 399         busy = 0;
 400  out:
 401         spin_unlock_irqrestore(&adapter->lock, flags);
 402         return busy;
 403 }
 404
 405 /**
 406  * mega_allocate_scb()
 407  * @adapter - pointer to our soft state
 408  * @cmd - scsi command from the mid-layer
 409  *
 410  * Allocate a SCB structure. This is the central structure for controller
 411  * commands.
 412  */
 413 static inline scb_t *
 414 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
 415 {
 416         struct list_head *head = &adapter->free_list;
 417         scb_t   *scb;
 418
 419         /* Unlink command from Free List */
 420         if( !list_empty(head) ) {
 421
 422                 scb = list_entry(head->next, scb_t, list);
 423
 424                 list_del_init(head->next);
 425
 426                 scb->state = SCB_ACTIVE;
 427                 scb->cmd = cmd;
 428                 scb->dma_type = MEGA_DMA_TYPE_NONE;
 429
 430                 return scb;
 431         }
 432
 433         return NULL;
 434 }
 435
 436 /**
 437  * mega_get_ldrv_num()
 438  * @adapter - pointer to our soft state
 439  * @cmd - scsi mid layer command
 440  * @channel - channel on the controller
 441  *
 442  * Calculate the logical drive number based on the information in scsi command
 443  * and the channel number.
 444  */
 445 static inline int
 446 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
 447 {
 448         int             tgt;
 449         int             ldrv_num;
 450
 451         tgt = cmd->device->id;
 452
 453         if ( tgt > adapter->this_id )
 454                 tgt--;  /* we do not get inquires for initiator id */
 455
 456         ldrv_num = (channel * 15) + tgt;
 457
 458
 459         /*
 460          * If we have a logical drive with boot enabled, project it first
 461          */
 462         if( adapter->boot_ldrv_enabled ) {
 463                 if( ldrv_num == 0 ) {
 464                         ldrv_num = adapter->boot_ldrv;
 465                 }
 466                 else {
 467                         if( ldrv_num <= adapter->boot_ldrv ) {
 468                                 ldrv_num--;
 469                         }
 470                 }
 471         }
 472
 473         /*
 474          * If "delete logical drive" feature is enabled on this controller.
 475          * Do only if at least one delete logical drive operation was done.
 476          *
 477          * Also, after logical drive deletion, instead of logical drive number,
 478          * the value returned should be 0x80+logical drive id.
 479          *
 480          * These is valid only for IO commands.
 481          */
 482
 483         if (adapter->support_random_del && adapter->read_ldidmap )
 484                 switch (cmd->cmnd[0]) {
 485                 case READ_6:    /* fall through */
 486                 case WRITE_6:   /* fall through */
 487                 case READ_10:   /* fall through */
 488                 case WRITE_10:
 489                         ldrv_num += 0x80;
 490                 }
 491
 492         return ldrv_num;
 493 }
 494
 495 /**
 496  * mega_build_cmd()
 497  * @adapter - pointer to our soft state
 498  * @cmd - Prepare using this scsi command
 499  * @busy - busy flag if no resources
 500  *
 501  * Prepares a command and scatter gather list for the controller. This routine
 502  * also finds out if the commands is intended for a logical drive or a
 503  * physical device and prepares the controller command accordingly.
 504  *
 505  * We also re-order the logical drives and physical devices based on their
 506  * boot settings.
 507  */
 508 static scb_t *
 509 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
 510 {
 511         mega_ext_passthru       *epthru;
 512         mega_passthru   *pthru;
 513         scb_t   *scb;
 514         mbox_t  *mbox;
 515         long    seg;
 516         char    islogical;
 517         int     max_ldrv_num;
 518         int     channel = 0;
 519         int     target = 0;
 520         int     ldrv_num = 0;   /* logical drive number */
 521
 522
 523         /*
 524          * filter the internal and ioctl commands
 525          */
 526         if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
 527                 return cmd->buffer;
 528         }
 529
 530
 531         /*
 532          * We know what channels our logical drives are on - mega_find_card()
 533          */
 534         islogical = adapter->logdrv_chan[cmd->device->channel];
 535
 536         /*
 537          * The theory: If physical drive is chosen for boot, all the physical
 538          * devices are exported before the logical drives, otherwise physical
 539          * devices are pushed after logical drives, in which case - Kernel sees
 540          * the physical devices on virtual channel which is obviously converted
 541          * to actual channel on the HBA.
 542          */
 543         if( adapter->boot_pdrv_enabled ) {
 544                 if( islogical ) {
 545                         /* logical channel */
 546                         channel = cmd->device->channel -
 547                                 adapter->product_info.nchannels;
 548                 }
 549                 else {
 550                         /* this is physical channel */
 551                         channel = cmd->device->channel;
 552                         target = cmd->device->id;
 553
 554                         /*
 555                          * boot from a physical disk, that disk needs to be
 556                          * exposed first IF both the channels are SCSI, then
 557                          * booting from the second channel is not allowed.
 558                          */
 559                         if( target == 0 ) {
 560                                 target = adapter->boot_pdrv_tgt;
 561                         }
 562                         else if( target == adapter->boot_pdrv_tgt ) {
 563                                 target = 0;
 564                         }
 565                 }
 566         }
 567         else {
 568                 if( islogical ) {
 569                         /* this is the logical channel */
 570                         channel = cmd->device->channel;
 571                 }
 572                 else {
 573                         /* physical channel */
 574                         channel = cmd->device->channel - NVIRT_CHAN;
 575                         target = cmd->device->id;
 576                 }
 577         }
 578
 579
 580         if(islogical) {
 581
 582                 /* have just LUN 0 for each target on virtual channels */
 583                 if (cmd->device->lun) {
 584                         cmd->result = (DID_BAD_TARGET << 16);
 585                         cmd->scsi_done(cmd);
 586                         return NULL;
 587                 }
 588
 589                 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
 590
 591
 592                 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
 593                         MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
 594
 595                 /*
 596                  * max_ldrv_num increases by 0x80 if some logical drive was
 597                  * deleted.
 598                  */
 599                 if(adapter->read_ldidmap)
 600                         max_ldrv_num += 0x80;
 601
 602                 if(ldrv_num > max_ldrv_num ) {
 603                         cmd->result = (DID_BAD_TARGET << 16);
 604                         cmd->scsi_done(cmd);
 605                         return NULL;
 606                 }
 607
 608         }
 609         else {
 610                 if( cmd->device->lun > 7) {
 611                         /*
 612                          * Do not support lun >7 for physically accessed
 613                          * devices
 614                          */
 615                         cmd->result = (DID_BAD_TARGET << 16);
 616                         cmd->scsi_done(cmd);
 617                         return NULL;
 618                 }
 619         }
 620
 621         /*
 622          *
 623          * Logical drive commands
 624          *
 625          */
 626         if(islogical) {
 627                 switch (cmd->cmnd[0]) {
 628                 case TEST_UNIT_READY:
 629 #if MEGA_HAVE_CLUSTERING
 630                         /*
 631                          * Do we support clustering and is the support enabled
 632                          * If no, return success always
 633                          */
 634                         if( !adapter->has_cluster ) {
 635                                 cmd->result = (DID_OK << 16);
 636                                 cmd->scsi_done(cmd);
 637                                 return NULL;
 638                         }
 639
 640                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 641                                 *busy = 1;
 642                                 return NULL;
 643                         }
 644
 645                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 646                         scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
 647                         scb->raw_mbox[3] = ldrv_num;
 648
 649                         scb->dma_direction = PCI_DMA_NONE;
 650
 651                         return scb;
 652 #else
 653                         cmd->result = (DID_OK << 16);
 654                         cmd->scsi_done(cmd);
 655                         return NULL;
 656 #endif
 657
 658                 case MODE_SENSE: {
 659                         char *buf;
 660
 661                         if (cmd->use_sg) {
 662                                 struct scatterlist *sg;
 663
 664                                 sg = (struct scatterlist *)cmd->request_buffer;
 665                                 buf = kmap_atomic(sg->page, KM_IRQ0) +
 666                                         sg->offset;
 667                         } else
 668                                 buf = cmd->request_buffer;
 669                         memset(buf, 0, cmd->cmnd[4]);
 670                         if (cmd->use_sg) {
 671                                 struct scatterlist *sg;
 672
 673                                 sg = (struct scatterlist *)cmd->request_buffer;
 674                                 kunmap_atomic(buf - sg->offset, KM_IRQ0);
 675                         }
 676                         cmd->result = (DID_OK << 16);
 677                         cmd->scsi_done(cmd);
 678                         return NULL;
 679                 }
 680
 681                 case READ_CAPACITY:
 682                 case INQUIRY:
 683
 684                         if(!(adapter->flag & (1L << cmd->device->channel))) {
 685
 686                                 printk(KERN_NOTICE
 687                                         "scsi%d: scanning scsi channel %d ",
 688                                                 adapter->host->host_no,
 689                                                 cmd->device->channel);
 690                                 printk("for logical drives.\n");
 691
 692                                 adapter->flag |= (1L << cmd->device->channel);
 693                         }
 694
 695                         /* Allocate a SCB and initialize passthru */
 696                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 697                                 *busy = 1;
 698                                 return NULL;
 699                         }
 700                         pthru = scb->pthru;
 701
 702                         mbox = (mbox_t *)scb->raw_mbox;
 703                         memset(mbox, 0, sizeof(scb->raw_mbox));
 704                         memset(pthru, 0, sizeof(mega_passthru));
 705
 706                         pthru->timeout = 0;
 707                         pthru->ars = 1;
 708                         pthru->reqsenselen = 14;
 709                         pthru->islogical = 1;
 710                         pthru->logdrv = ldrv_num;
 711                         pthru->cdblen = cmd->cmd_len;
 712                         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 713
 714                         if( adapter->has_64bit_addr ) {
 715                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 716                         }
 717                         else {
 718                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 719                         }
 720
 721                         scb->dma_direction = PCI_DMA_FROMDEVICE;
 722
 723                         pthru->numsgelements = mega_build_sglist(adapter, scb,
 724                                 &pthru->dataxferaddr, &pthru->dataxferlen);
 725
 726                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 727
 728                         return scb;
 729
 730                 case READ_6:
 731                 case WRITE_6:
 732                 case READ_10:
 733                 case WRITE_10:
 734                 case READ_12:
 735                 case WRITE_12:
 736
 737                         /* Allocate a SCB and initialize mailbox */
 738                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 739                                 *busy = 1;
 740                                 return NULL;
 741                         }
 742                         mbox = (mbox_t *)scb->raw_mbox;
 743
 744                         memset(mbox, 0, sizeof(scb->raw_mbox));
 745                         mbox->m_out.logdrv = ldrv_num;
 746
 747                         /*
 748                          * A little hack: 2nd bit is zero for all scsi read
 749                          * commands and is set for all scsi write commands
 750                          */
 751                         if( adapter->has_64bit_addr ) {
 752                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 753                                         MEGA_MBOXCMD_LWRITE64:
 754                                         MEGA_MBOXCMD_LREAD64 ;
 755                         }
 756                         else {
 757                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 758                                         MEGA_MBOXCMD_LWRITE:
 759                                         MEGA_MBOXCMD_LREAD ;
 760                         }
 761
 762                         /*
 763                          * 6-byte READ(0x08) or WRITE(0x0A) cdb
 764                          */
 765                         if( cmd->cmd_len == 6 ) {
 766                                 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
 767                                 mbox->m_out.lba =
 768                                         ((u32)cmd->cmnd[1] << 16) |
 769                                         ((u32)cmd->cmnd[2] << 8) |
 770                                         (u32)cmd->cmnd[3];
 771
 772                                 mbox->m_out.lba &= 0x1FFFFF;
 773
 774 #if MEGA_HAVE_STATS
 775                                 /*
 776                                  * Take modulo 0x80, since the logical drive
 777                                  * number increases by 0x80 when a logical
 778                                  * drive was deleted
 779                                  */
 780                                 if (*cmd->cmnd == READ_6) {
 781                                         adapter->nreads[ldrv_num%0x80]++;
 782                                         adapter->nreadblocks[ldrv_num%0x80] +=
 783                                                 mbox->m_out.numsectors;
 784                                 } else {
 785                                         adapter->nwrites[ldrv_num%0x80]++;
 786                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 787                                                 mbox->m_out.numsectors;
 788                                 }
 789 #endif
 790                         }
 791
 792                         /*
 793                          * 10-byte READ(0x28) or WRITE(0x2A) cdb
 794                          */
 795                         if( cmd->cmd_len == 10 ) {
 796                                 mbox->m_out.numsectors =
 797                                         (u32)cmd->cmnd[8] |
 798                                         ((u32)cmd->cmnd[7] << 8);
 799                                 mbox->m_out.lba =
 800                                         ((u32)cmd->cmnd[2] << 24) |
 801                                         ((u32)cmd->cmnd[3] << 16) |
 802                                         ((u32)cmd->cmnd[4] << 8) |
 803                                         (u32)cmd->cmnd[5];
 804
 805 #if MEGA_HAVE_STATS
 806                                 if (*cmd->cmnd == READ_10) {
 807                                         adapter->nreads[ldrv_num%0x80]++;
 808                                         adapter->nreadblocks[ldrv_num%0x80] +=
 809                                                 mbox->m_out.numsectors;
 810                                 } else {
 811                                         adapter->nwrites[ldrv_num%0x80]++;
 812                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 813                                                 mbox->m_out.numsectors;
 814                                 }
 815 #endif
 816                         }
 817
 818                         /*
 819                          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
 820                          */
 821                         if( cmd->cmd_len == 12 ) {
 822                                 mbox->m_out.lba =
 823                                         ((u32)cmd->cmnd[2] << 24) |
 824                                         ((u32)cmd->cmnd[3] << 16) |
 825                                         ((u32)cmd->cmnd[4] << 8) |
 826                                         (u32)cmd->cmnd[5];
 827
 828                                 mbox->m_out.numsectors =
 829                                         ((u32)cmd->cmnd[6] << 24) |
 830                                         ((u32)cmd->cmnd[7] << 16) |
 831                                         ((u32)cmd->cmnd[8] << 8) |
 832                                         (u32)cmd->cmnd[9];
 833
 834 #if MEGA_HAVE_STATS
 835                                 if (*cmd->cmnd == READ_12) {
 836                                         adapter->nreads[ldrv_num%0x80]++;
 837                                         adapter->nreadblocks[ldrv_num%0x80] +=
 838                                                 mbox->m_out.numsectors;
 839                                 } else {
 840                                         adapter->nwrites[ldrv_num%0x80]++;
 841                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 842                                                 mbox->m_out.numsectors;
 843                                 }
 844 #endif
 845                         }
 846
 847                         /*
 848                          * If it is a read command
 849                          */
 850                         if( (*cmd->cmnd & 0x0F) == 0x08 ) {
 851                                 scb->dma_direction = PCI_DMA_FROMDEVICE;
 852                         }
 853                         else {
 854                                 scb->dma_direction = PCI_DMA_TODEVICE;
 855                         }
 856
 857                         /* Calculate Scatter-Gather info */
 858                         mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
 859                                         (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
 860
 861                         return scb;
 862
 863 #if MEGA_HAVE_CLUSTERING
 864                 case RESERVE:   /* Fall through */
 865                 case RELEASE:
 866
 867                         /*
 868                          * Do we support clustering and is the support enabled
 869                          */
 870                         if( ! adapter->has_cluster ) {
 871
 872                                 cmd->result = (DID_BAD_TARGET << 16);
 873                                 cmd->scsi_done(cmd);
 874                                 return NULL;
 875                         }
 876
 877                         /* Allocate a SCB and initialize mailbox */
 878                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 879                                 *busy = 1;
 880                                 return NULL;
 881                         }
 882
 883                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 884                         scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
 885                                 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
 886
 887                         scb->raw_mbox[3] = ldrv_num;
 888
 889                         scb->dma_direction = PCI_DMA_NONE;
 890
 891                         return scb;
 892 #endif
 893
 894                 default:
 895                         cmd->result = (DID_BAD_TARGET << 16);
 896                         cmd->scsi_done(cmd);
 897                         return NULL;
 898                 }
 899         }
 900
 901         /*
 902          * Passthru drive commands
 903          */
 904         else {
 905                 /* Allocate a SCB and initialize passthru */
 906                 if(!(scb = mega_allocate_scb(adapter, cmd))) {
 907                         *busy = 1;
 908                         return NULL;
 909                 }
 910
 911                 mbox = (mbox_t *)scb->raw_mbox;
 912                 memset(mbox, 0, sizeof(scb->raw_mbox));
 913
 914                 if( adapter->support_ext_cdb ) {
 915
 916                         epthru = mega_prepare_extpassthru(adapter, scb, cmd,
 917                                         channel, target);
 918
 919                         mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
 920
 921                         mbox->m_out.xferaddr = scb->epthru_dma_addr;
 922
 923                 }
 924                 else {
 925
 926                         pthru = mega_prepare_passthru(adapter, scb, cmd,
 927                                         channel, target);
 928
 929                         /* Initialize mailbox */
 930                         if( adapter->has_64bit_addr ) {
 931                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 932                         }
 933                         else {
 934                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 935                         }
 936
 937                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 938
 939                 }
 940                 return scb;
 941         }
 942         return NULL;
 943 }
 944
 945
 946 /**
 947  * mega_prepare_passthru()
 948  * @adapter - pointer to our soft state
 949  * @scb - our scsi control block
 950  * @cmd - scsi command from the mid-layer
 951  * @channel - actual channel on the controller
 952  * @target - actual id on the controller.
 953  *
 954  * prepare a command for the scsi physical devices.
 955  */
 956 static mega_passthru *
 957 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
 958                 int channel, int target)
 959 {
 960         mega_passthru *pthru;
 961
 962         pthru = scb->pthru;
 963         memset(pthru, 0, sizeof (mega_passthru));
 964
 965         /* 0=6sec/1=60sec/2=10min/3=3hrs */
 966         pthru->timeout = 2;
 967
 968         pthru->ars = 1;
 969         pthru->reqsenselen = 14;
 970         pthru->islogical = 0;
 971
 972         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
 973
 974         pthru->target = (adapter->flag & BOARD_40LD) ?
 975                 (channel << 4) | target : target;
 976
 977         pthru->cdblen = cmd->cmd_len;
 978         pthru->logdrv = cmd->device->lun;
 979
 980         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 981
 982         /* Not sure about the direction */
 983         scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
 984
 985         /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
 986         switch (cmd->cmnd[0]) {
 987         case INQUIRY:
 988         case READ_CAPACITY:
 989                 if(!(adapter->flag & (1L << cmd->device->channel))) {
 990
 991                         printk(KERN_NOTICE
 992                                 "scsi%d: scanning scsi channel %d [P%d] ",
 993                                         adapter->host->host_no,
 994                                         cmd->device->channel, channel);
 995                         printk("for physical devices.\n");
 996
 997                         adapter->flag |= (1L << cmd->device->channel);
 998                 }
 999                 /* Fall through */
1000         default:
1001                 pthru->numsgelements = mega_build_sglist(adapter, scb,
1002                                 &pthru->dataxferaddr, &pthru->dataxferlen);
1003                 break;
1004         }
1005         return pthru;
1006 }
1007
1008
1009 /**
1010  * mega_prepare_extpassthru()
1011  * @adapter - pointer to our soft state
1012  * @scb - our scsi control block
1013  * @cmd - scsi command from the mid-layer
1014  * @channel - actual channel on the controller
1015  * @target - actual id on the controller.
1016  *
1017  * prepare a command for the scsi physical devices. This rountine prepares
1018  * commands for devices which can take extended CDBs (>10 bytes)
1019  */
1020 static mega_ext_passthru *
1021 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1022                 int channel, int target)
1023 {
1024         mega_ext_passthru       *epthru;
1025
1026         epthru = scb->epthru;
1027         memset(epthru, 0, sizeof(mega_ext_passthru));
1028
1029         /* 0=6sec/1=60sec/2=10min/3=3hrs */
1030         epthru->timeout = 2;
1031
1032         epthru->ars = 1;
1033         epthru->reqsenselen = 14;
1034         epthru->islogical = 0;
1035
1036         epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1037         epthru->target = (adapter->flag & BOARD_40LD) ?
1038                 (channel << 4) | target : target;
1039
1040         epthru->cdblen = cmd->cmd_len;
1041         epthru->logdrv = cmd->device->lun;
1042
1043         memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1044
1045         /* Not sure about the direction */
1046         scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1047
1048         switch(cmd->cmnd[0]) {
1049         case INQUIRY:
1050         case READ_CAPACITY:
1051                 if(!(adapter->flag & (1L << cmd->device->channel))) {
1052
1053                         printk(KERN_NOTICE
1054                                 "scsi%d: scanning scsi channel %d [P%d] ",
1055                                         adapter->host->host_no,
1056                                         cmd->device->channel, channel);
1057                         printk("for physical devices.\n");
1058
1059                         adapter->flag |= (1L << cmd->device->channel);
1060                 }
1061                 /* Fall through */
1062         default:
1063                 epthru->numsgelements = mega_build_sglist(adapter, scb,
1064                                 &epthru->dataxferaddr, &epthru->dataxferlen);
1065                 break;
1066         }
1067
1068         return epthru;
1069 }
1070
1071 static void
1072 __mega_runpendq(adapter_t *adapter)
1073 {
1074         scb_t *scb;
1075         struct list_head *pos, *next;
1076
1077         /* Issue any pending commands to the card */
1078         list_for_each_safe(pos, next, &adapter->pending_list) {
1079
1080                 scb = list_entry(pos, scb_t, list);
1081
1082                 if( !(scb->state & SCB_ISSUED) ) {
1083
1084                         if( issue_scb(adapter, scb) != 0 )
1085                                 return;
1086                 }
1087         }
1088
1089         return;
1090 }
1091
1092
1093 /**
1094  * issue_scb()
1095  * @adapter - pointer to our soft state
1096  * @scb - scsi control block
1097  *
1098  * Post a command to the card if the mailbox is available, otherwise return
1099  * busy. We also take the scb from the pending list if the mailbox is
1100  * available.
1101  */
1102 static int
1103 issue_scb(adapter_t *adapter, scb_t *scb)
1104 {
1105         volatile mbox64_t       *mbox64 = adapter->mbox64;
1106         volatile mbox_t         *mbox = adapter->mbox;
1107         unsigned int    i = 0;
1108
1109         if(unlikely(mbox->m_in.busy)) {
1110                 do {
1111                         udelay(1);
1112                         i++;
1113                 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1114
1115                 if(mbox->m_in.busy) return -1;
1116         }
1117
1118         /* Copy mailbox data into host structure */
1119         memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1120                         sizeof(struct mbox_out));
1121
1122         mbox->m_out.cmdid = scb->idx;   /* Set cmdid */
1123         mbox->m_in.busy = 1;            /* Set busy */
1124
1125
1126         /*
1127          * Increment the pending queue counter
1128          */
1129         atomic_inc(&adapter->pend_cmds);
1130
1131         switch (mbox->m_out.cmd) {
1132         case MEGA_MBOXCMD_LREAD64:
1133         case MEGA_MBOXCMD_LWRITE64:
1134         case MEGA_MBOXCMD_PASSTHRU64:
1135         case MEGA_MBOXCMD_EXTPTHRU:
1136                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1137                 mbox64->xfer_segment_hi = 0;
1138                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1139                 break;
1140         default:
1141                 mbox64->xfer_segment_lo = 0;
1142                 mbox64->xfer_segment_hi = 0;
1143         }
1144
1145         /*
1146          * post the command
1147          */
1148         scb->state |= SCB_ISSUED;
1149
1150         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1151                 mbox->m_in.poll = 0;
1152                 mbox->m_in.ack = 0;
1153                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1154         }
1155         else {
1156                 irq_enable(adapter);
1157                 issue_command(adapter);
1158         }
1159
1160         return 0;
1161 }
1162
1163 /*
1164  * Wait until the controller's mailbox is available
1165  */
1166 static inline int
1167 mega_busywait_mbox (adapter_t *adapter)
1168 {
1169         if (adapter->mbox->m_in.busy)
1170                 return __mega_busywait_mbox(adapter);
1171         return 0;
1172 }
1173
1174 /**
1175  * issue_scb_block()
1176  * @adapter - pointer to our soft state
1177  * @raw_mbox - the mailbox
1178  *
1179  * Issue a scb in synchronous and non-interrupt mode
1180  */
1181 static int
1182 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1183 {
1184         volatile mbox64_t *mbox64 = adapter->mbox64;
1185         volatile mbox_t *mbox = adapter->mbox;
1186         u8      byte;
1187
1188         /* Wait until mailbox is free */
1189         if(mega_busywait_mbox (adapter))
1190                 goto bug_blocked_mailbox;
1191
1192         /* Copy mailbox data into host structure */
1193         memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1194         mbox->m_out.cmdid = 0xFE;
1195         mbox->m_in.busy = 1;
1196
1197         switch (raw_mbox[0]) {
1198         case MEGA_MBOXCMD_LREAD64:
1199         case MEGA_MBOXCMD_LWRITE64:
1200         case MEGA_MBOXCMD_PASSTHRU64:
1201         case MEGA_MBOXCMD_EXTPTHRU:
1202                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1203                 mbox64->xfer_segment_hi = 0;
1204                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1205                 break;
1206         default:
1207                 mbox64->xfer_segment_lo = 0;
1208                 mbox64->xfer_segment_hi = 0;
1209         }
1210
1211         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1212                 mbox->m_in.poll = 0;
1213                 mbox->m_in.ack = 0;
1214                 mbox->m_in.numstatus = 0xFF;
1215                 mbox->m_in.status = 0xFF;
1216                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1217
1218                 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1219                         cpu_relax();
1220
1221                 mbox->m_in.numstatus = 0xFF;
1222
1223                 while( (volatile u8)mbox->m_in.poll != 0x77 )
1224                         cpu_relax();
1225
1226                 mbox->m_in.poll = 0;
1227                 mbox->m_in.ack = 0x77;
1228
1229                 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1230
1231                 while(RDINDOOR(adapter) & 0x2)
1232                         cpu_relax();
1233         }
1234         else {
1235                 irq_disable(adapter);
1236                 issue_command(adapter);
1237
1238                 while (!((byte = irq_state(adapter)) & INTR_VALID))
1239                         cpu_relax();
1240
1241                 set_irq_state(adapter, byte);
1242                 irq_enable(adapter);
1243                 irq_ack(adapter);
1244         }
1245
1246         return mbox->m_in.status;
1247
1248 bug_blocked_mailbox:
1249         printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1250         udelay (1000);
1251         return -1;
1252 }
1253
1254
1255 /**
1256  * megaraid_isr_iomapped()
1257  * @irq - irq
1258  * @devp - pointer to our soft state
1259  * @regs - unused
1260  *
1261  * Interrupt service routine for io-mapped controllers.
1262  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1263  * and service the completed commands.
1264  */
1265 static irqreturn_t
1266 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1267 {
1268         adapter_t       *adapter = devp;
1269         unsigned long   flags;
1270         u8      status;
1271         u8      nstatus;
1272         u8      completed[MAX_FIRMWARE_STATUS];
1273         u8      byte;
1274         int     handled = 0;
1275
1276
1277         /*
1278          * loop till F/W has more commands for us to complete.
1279          */
1280         spin_lock_irqsave(&adapter->lock, flags);
1281
1282         do {
1283                 /* Check if a valid interrupt is pending */
1284                 byte = irq_state(adapter);
1285                 if( (byte & VALID_INTR_BYTE) == 0 ) {
1286                         /*
1287                          * No more pending commands
1288                          */
1289                         goto out_unlock;
1290                 }
1291                 set_irq_state(adapter, byte);
1292
1293                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1294                                 == 0xFF)
1295                         cpu_relax();
1296                 adapter->mbox->m_in.numstatus = 0xFF;
1297
1298                 status = adapter->mbox->m_in.status;
1299
1300                 /*
1301                  * decrement the pending queue counter
1302                  */
1303                 atomic_sub(nstatus, &adapter->pend_cmds);
1304
1305                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1306                                 nstatus);
1307
1308                 /* Acknowledge interrupt */
1309                 irq_ack(adapter);
1310
1311                 mega_cmd_done(adapter, completed, nstatus, status);
1312
1313                 mega_rundoneq(adapter);
1314
1315                 handled = 1;
1316
1317                 /* Loop through any pending requests */
1318                 if(atomic_read(&adapter->quiescent) == 0) {
1319                         mega_runpendq(adapter);
1320                 }
1321
1322         } while(1);
1323
1324  out_unlock:
1325
1326         spin_unlock_irqrestore(&adapter->lock, flags);
1327
1328         return IRQ_RETVAL(handled);
1329 }
1330
1331
1332 /**
1333  * megaraid_isr_memmapped()
1334  * @irq - irq
1335  * @devp - pointer to our soft state
1336  * @regs - unused
1337  *
1338  * Interrupt service routine for memory-mapped controllers.
1339  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1340  * and service the completed commands.
1341  */
1342 static irqreturn_t
1343 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
1344 {
1345         adapter_t       *adapter = devp;
1346         unsigned long   flags;
1347         u8      status;
1348         u32     dword = 0;
1349         u8      nstatus;
1350         u8      completed[MAX_FIRMWARE_STATUS];
1351         int     handled = 0;
1352
1353
1354         /*
1355          * loop till F/W has more commands for us to complete.
1356          */
1357         spin_lock_irqsave(&adapter->lock, flags);
1358
1359         do {
1360                 /* Check if a valid interrupt is pending */
1361                 dword = RDOUTDOOR(adapter);
1362                 if(dword != 0x10001234) {
1363                         /*
1364                          * No more pending commands
1365                          */
1366                         goto out_unlock;
1367                 }
1368                 WROUTDOOR(adapter, 0x10001234);
1369
1370                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1371                                 == 0xFF) {
1372                         cpu_relax();
1373                 }
1374                 adapter->mbox->m_in.numstatus = 0xFF;
1375
1376                 status = adapter->mbox->m_in.status;
1377
1378                 /*
1379                  * decrement the pending queue counter
1380                  */
1381                 atomic_sub(nstatus, &adapter->pend_cmds);
1382
1383                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1384                                 nstatus);
1385
1386                 /* Acknowledge interrupt */
1387                 WRINDOOR(adapter, 0x2);
1388
1389                 handled = 1;
1390
1391                 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1392
1393                 mega_cmd_done(adapter, completed, nstatus, status);
1394
1395                 mega_rundoneq(adapter);
1396
1397                 /* Loop through any pending requests */
1398                 if(atomic_read(&adapter->quiescent) == 0) {
1399                         mega_runpendq(adapter);
1400                 }
1401
1402         } while(1);
1403
1404  out_unlock:
1405
1406         spin_unlock_irqrestore(&adapter->lock, flags);
1407
1408         return IRQ_RETVAL(handled);
1409 }
1410 /**
1411  * mega_cmd_done()
1412  * @adapter - pointer to our soft state
1413  * @completed - array of ids of completed commands
1414  * @nstatus - number of completed commands
1415  * @status - status of the last command completed
1416  *
1417  * Complete the comamnds and call the scsi mid-layer callback hooks.
1418  */
1419 static void
1420 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1421 {
1422         mega_ext_passthru       *epthru = NULL;
1423         struct scatterlist      *sgl;
1424         Scsi_Cmnd       *cmd = NULL;
1425         mega_passthru   *pthru = NULL;
1426         mbox_t  *mbox = NULL;
1427         u8      c;
1428         scb_t   *scb;
1429         int     islogical;
1430         int     cmdid;
1431         int     i;
1432
1433         /*
1434          * for all the commands completed, call the mid-layer callback routine
1435          * and free the scb.
1436          */
1437         for( i = 0; i < nstatus; i++ ) {
1438
1439                 cmdid = completed[i];
1440
1441                 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1442                         scb = &adapter->int_scb;
1443                         cmd = scb->cmd;
1444                         mbox = (mbox_t *)scb->raw_mbox;
1445
1446                         /*
1447                          * Internal command interface do not fire the extended
1448                          * passthru or 64-bit passthru
1449                          */
1450                         pthru = scb->pthru;
1451
1452                 }
1453                 else {
1454                         scb = &adapter->scb_list[cmdid];
1455
1456                         /*
1457                          * Make sure f/w has completed a valid command
1458                          */
1459                         if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1460                                 printk(KERN_CRIT
1461                                         "megaraid: invalid command ");
1462                                 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1463                                         cmdid, scb->state, scb->cmd);
1464
1465                                 continue;
1466                         }
1467
1468                         /*
1469                          * Was a abort issued for this command
1470                          */
1471                         if( scb->state & SCB_ABORT ) {
1472
1473                                 printk(KERN_WARNING
1474                                 "megaraid: aborted cmd %lx[%x] complete.\n",
1475                                         scb->cmd->serial_number, scb->idx);
1476
1477                                 scb->cmd->result = (DID_ABORT << 16);
1478
1479                                 list_add_tail(SCSI_LIST(scb->cmd),
1480                                                 &adapter->completed_list);
1481
1482                                 mega_free_scb(adapter, scb);
1483
1484                                 continue;
1485                         }
1486
1487                         /*
1488                          * Was a reset issued for this command
1489                          */
1490                         if( scb->state & SCB_RESET ) {
1491
1492                                 printk(KERN_WARNING
1493                                 "megaraid: reset cmd %lx[%x] complete.\n",
1494                                         scb->cmd->serial_number, scb->idx);
1495
1496                                 scb->cmd->result = (DID_RESET << 16);
1497
1498                                 list_add_tail(SCSI_LIST(scb->cmd),
1499                                                 &adapter->completed_list);
1500
1501                                 mega_free_scb (adapter, scb);
1502
1503                                 continue;
1504                         }
1505
1506                         cmd = scb->cmd;
1507                         pthru = scb->pthru;
1508                         epthru = scb->epthru;
1509                         mbox = (mbox_t *)scb->raw_mbox;
1510
1511 #if MEGA_HAVE_STATS
1512                         {
1513
1514                         int     logdrv = mbox->m_out.logdrv;
1515
1516                         islogical = adapter->logdrv_chan[cmd->channel];
1517                         /*
1518                          * Maintain an error counter for the logical drive.
1519                          * Some application like SNMP agent need such
1520                          * statistics
1521                          */
1522                         if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1523                                                 cmd->cmnd[0] == READ_10 ||
1524                                                 cmd->cmnd[0] == READ_12)) {
1525                                 /*
1526                                  * Logical drive number increases by 0x80 when
1527                                  * a logical drive is deleted
1528                                  */
1529                                 adapter->rd_errors[logdrv%0x80]++;
1530                         }
1531
1532                         if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1533                                                 cmd->cmnd[0] == WRITE_10 ||
1534                                                 cmd->cmnd[0] == WRITE_12)) {
1535                                 /*
1536                                  * Logical drive number increases by 0x80 when
1537                                  * a logical drive is deleted
1538                                  */
1539                                 adapter->wr_errors[logdrv%0x80]++;
1540                         }
1541
1542                         }
1543 #endif
1544                 }
1545
1546                 /*
1547                  * Do not return the presence of hard disk on the channel so,
1548                  * inquiry sent, and returned data==hard disk or removable
1549                  * hard disk and not logical, request should return failure! -
1550                  * PJ
1551                  */
1552                 islogical = adapter->logdrv_chan[cmd->device->channel];
1553                 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1554
1555                         if( cmd->use_sg ) {
1556                                 sgl = (struct scatterlist *)
1557                                         cmd->request_buffer;
1558
1559                                 if( sgl->page ) {
1560                                         c = *(unsigned char *)
1561                                         page_address((&sgl[0])->page) +
1562                                         (&sgl[0])->offset;
1563                                 }
1564                                 else {
1565                                         printk(KERN_WARNING
1566                                                 "megaraid: invalid sg.\n");
1567                                         c = 0;
1568                                 }
1569                         }
1570                         else {
1571                                 c = *(u8 *)cmd->request_buffer;
1572                         }
1573
1574                         if(IS_RAID_CH(adapter, cmd->device->channel) &&
1575                                         ((c & 0x1F ) == TYPE_DISK)) {
1576                                 status = 0xF0;
1577                         }
1578                 }
1579
1580                 /* clear result; otherwise, success returns corrupt value */
1581                 cmd->result = 0;
1582
1583                 /* Convert MegaRAID status to Linux error code */
1584                 switch (status) {
1585                 case 0x00:      /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1586                         cmd->result |= (DID_OK << 16);
1587                         break;
1588
1589                 case 0x02:      /* ERROR_ABORTED, i.e.
1590                                    SCSI_STATUS_CHECK_CONDITION */
1591
1592                         /* set sense_buffer and result fields */
1593                         if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1594                                 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1595
1596                                 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1597                                                 14);
1598
1599                                 cmd->result = (DRIVER_SENSE << 24) |
1600                                         (DID_OK << 16) |
1601                                         (CHECK_CONDITION << 1);
1602                         }
1603                         else {
1604                                 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1605
1606                                         memcpy(cmd->sense_buffer,
1607                                                 epthru->reqsensearea, 14);
1608
1609                                         cmd->result = (DRIVER_SENSE << 24) |
1610                                                 (DID_OK << 16) |
1611                                                 (CHECK_CONDITION << 1);
1612                                 } else {
1613                                         cmd->sense_buffer[0] = 0x70;
1614                                         cmd->sense_buffer[2] = ABORTED_COMMAND;
1615                                         cmd->result |= (CHECK_CONDITION << 1);
1616                                 }
1617                         }
1618                         break;
1619
1620                 case 0x08:      /* ERR_DEST_DRIVE_FAILED, i.e.
1621                                    SCSI_STATUS_BUSY */
1622                         cmd->result |= (DID_BUS_BUSY << 16) | status;
1623                         break;
1624
1625                 default:
1626 #if MEGA_HAVE_CLUSTERING
1627                         /*
1628                          * If TEST_UNIT_READY fails, we know
1629                          * MEGA_RESERVATION_STATUS failed
1630                          */
1631                         if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1632                                 cmd->result |= (DID_ERROR << 16) |
1633                                         (RESERVATION_CONFLICT << 1);
1634                         }
1635                         else
1636                         /*
1637                          * Error code returned is 1 if Reserve or Release
1638                          * failed or the input parameter is invalid
1639                          */
1640                         if( status == 1 &&
1641                                 (cmd->cmnd[0] == RESERVE ||
1642                                          cmd->cmnd[0] == RELEASE) ) {
1643
1644                                 cmd->result |= (DID_ERROR << 16) |
1645                                         (RESERVATION_CONFLICT << 1);
1646                         }
1647                         else
1648 #endif
1649                                 cmd->result |= (DID_BAD_TARGET << 16)|status;
1650                 }
1651
1652                 /*
1653                  * Only free SCBs for the commands coming down from the
1654                  * mid-layer, not for which were issued internally
1655                  *
1656                  * For internal command, restore the status returned by the
1657                  * firmware so that user can interpret it.
1658                  */
1659                 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1660                         cmd->result = status;
1661
1662                         /*
1663                          * Remove the internal command from the pending list
1664                          */
1665                         list_del_init(&scb->list);
1666                         scb->state = SCB_FREE;
1667                 }
1668                 else {
1669                         mega_free_scb(adapter, scb);
1670                 }
1671
1672                 /* Add Scsi_Command to end of completed queue */
1673                 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1674         }
1675 }
1676
1677
1678 /*
1679  * mega_runpendq()
1680  *
1681  * Run through the list of completed requests and finish it
1682  */
1683 static void
1684 mega_rundoneq (adapter_t *adapter)
1685 {
1686         Scsi_Cmnd *cmd;
1687         struct list_head *pos;
1688
1689         list_for_each(pos, &adapter->completed_list) {
1690
1691                 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1692
1693                 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1694                 cmd->scsi_done(cmd);
1695         }
1696
1697         INIT_LIST_HEAD(&adapter->completed_list);
1698 }
1699
1700
1701 /*
1702  * Free a SCB structure
1703  * Note: We assume the scsi commands associated with this scb is not free yet.
1704  */
1705 static void
1706 mega_free_scb(adapter_t *adapter, scb_t *scb)
1707 {
1708         unsigned long length;
1709
1710         switch( scb->dma_type ) {
1711
1712         case MEGA_DMA_TYPE_NONE:
1713                 break;
1714
1715         case MEGA_BULK_DATA:
1716                 if (scb->cmd->use_sg == 0)
1717                         length = scb->cmd->request_bufflen;
1718                 else {
1719                         struct scatterlist *sgl =
1720                                 (struct scatterlist *)scb->cmd->request_buffer;
1721                         length = sgl->length;
1722                 }
1723                 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1724                                length, scb->dma_direction);
1725                 break;
1726
1727         case MEGA_SGLIST:
1728                 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1729                         scb->cmd->use_sg, scb->dma_direction);
1730                 break;
1731
1732         default:
1733                 break;
1734         }
1735
1736         /*
1737          * Remove from the pending list
1738          */
1739         list_del_init(&scb->list);
1740
1741         /* Link the scb back into free list */
1742         scb->state = SCB_FREE;
1743         scb->cmd = NULL;
1744
1745         list_add(&scb->list, &adapter->free_list);
1746 }
1747
1748
1749 static int
1750 __mega_busywait_mbox (adapter_t *adapter)
1751 {
1752         volatile mbox_t *mbox = adapter->mbox;
1753         long counter;
1754
1755         for (counter = 0; counter < 10000; counter++) {
1756                 if (!mbox->m_in.busy)
1757                         return 0;
1758                 udelay(100); yield();
1759         }
1760         return -1;              /* give up after 1 second */
1761 }
1762
1763 /*
1764  * Copies data to SGLIST
1765  * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1766  */
1767 static int
1768 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1769 {
1770         struct scatterlist      *sgl;
1771         struct page     *page;
1772         unsigned long   offset;
1773         unsigned int    length;
1774         Scsi_Cmnd       *cmd;
1775         int     sgcnt;
1776         int     idx;
1777
1778         cmd = scb->cmd;
1779
1780         /* Scatter-gather not used */
1781         if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1782                                  !adapter->has_64bit_addr)) {
1783
1784                 if (cmd->use_sg == 0) {
1785                         page = virt_to_page(cmd->request_buffer);
1786                         offset = offset_in_page(cmd->request_buffer);
1787                         length = cmd->request_bufflen;
1788                 } else {
1789                         sgl = (struct scatterlist *)cmd->request_buffer;
1790                         page = sgl->page;
1791                         offset = sgl->offset;
1792                         length = sgl->length;
1793                 }
1794
1795                 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1796                                                   page, offset,
1797                                                   length,
1798                                                   scb->dma_direction);
1799                 scb->dma_type = MEGA_BULK_DATA;
1800
1801                 /*
1802                  * We need to handle special 64-bit commands that need a
1803                  * minimum of 1 SG
1804                  */
1805                 if( adapter->has_64bit_addr ) {
1806                         scb->sgl64[0].address = scb->dma_h_bulkdata;
1807                         scb->sgl64[0].length = length;
1808                         *buf = (u32)scb->sgl_dma_addr;
1809                         *len = (u32)length;
1810                         return 1;
1811                 }
1812                 else {
1813                         *buf = (u32)scb->dma_h_bulkdata;
1814                         *len = (u32)length;
1815                 }
1816                 return 0;
1817         }
1818
1819         sgl = (struct scatterlist *)cmd->request_buffer;
1820
1821         /*
1822          * Copy Scatter-Gather list info into controller structure.
1823          *
1824          * The number of sg elements returned must not exceed our limit
1825          */
1826         sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1827                         scb->dma_direction);
1828
1829         scb->dma_type = MEGA_SGLIST;
1830
1831         if( sgcnt > adapter->sglen ) BUG();
1832
1833         *len = 0;
1834
1835         for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1836
1837                 if( adapter->has_64bit_addr ) {
1838                         scb->sgl64[idx].address = sg_dma_address(sgl);
1839                         *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1840                 }
1841                 else {
1842                         scb->sgl[idx].address = sg_dma_address(sgl);
1843                         *len += scb->sgl[idx].length = sg_dma_len(sgl);
1844                 }
1845         }
1846
1847         /* Reset pointer and length fields */
1848         *buf = scb->sgl_dma_addr;
1849
1850         /* Return count of SG requests */
1851         return sgcnt;
1852 }
1853
1854
1855 /*
1856  * mega_8_to_40ld()
1857  *
1858  * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1859  * Enquiry3 structures for later use
1860  */
1861 static void
1862 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1863                 mega_product_info *product_info)
1864 {
1865         int i;
1866
1867         product_info->max_commands = inquiry->adapter_info.max_commands;
1868         enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1869         product_info->nchannels = inquiry->adapter_info.nchannels;
1870
1871         for (i = 0; i < 4; i++) {
1872                 product_info->fw_version[i] =
1873                         inquiry->adapter_info.fw_version[i];
1874
1875                 product_info->bios_version[i] =
1876                         inquiry->adapter_info.bios_version[i];
1877         }
1878         enquiry3->cache_flush_interval =
1879                 inquiry->adapter_info.cache_flush_interval;
1880
1881         product_info->dram_size = inquiry->adapter_info.dram_size;
1882
1883         enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1884
1885         for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1886                 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1887                 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1888                 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1889         }
1890
1891         for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1892                 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1893 }
1894
1895 static inline void
1896 mega_free_sgl(adapter_t *adapter)
1897 {
1898         scb_t   *scb;
1899         int     i;
1900
1901         for(i = 0; i < adapter->max_cmds; i++) {
1902
1903                 scb = &adapter->scb_list[i];
1904
1905                 if( scb->sgl64 ) {
1906                         pci_free_consistent(adapter->dev,
1907                                 sizeof(mega_sgl64) * adapter->sglen,
1908                                 scb->sgl64,
1909                                 scb->sgl_dma_addr);
1910
1911                         scb->sgl64 = NULL;
1912                 }
1913
1914                 if( scb->pthru ) {
1915                         pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1916                                 scb->pthru, scb->pthru_dma_addr);
1917
1918                         scb->pthru = NULL;
1919                 }
1920
1921                 if( scb->epthru ) {
1922                         pci_free_consistent(adapter->dev,
1923                                 sizeof(mega_ext_passthru),
1924                                 scb->epthru, scb->epthru_dma_addr);
1925
1926                         scb->epthru = NULL;
1927                 }
1928
1929         }
1930 }
1931
1932
1933 /*
1934  * Get information about the card/driver
1935  */
1936 const char *
1937 megaraid_info(struct Scsi_Host *host)
1938 {
1939         static char buffer[512];
1940         adapter_t *adapter;
1941
1942         adapter = (adapter_t *)host->hostdata;
1943
1944         sprintf (buffer,
1945                  "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1946                  adapter->fw_version, adapter->product_info.max_commands,
1947                  adapter->host->max_id, adapter->host->max_channel,
1948                  adapter->host->max_lun);
1949         return buffer;
1950 }
1951
1952 /*
1953  * Abort a previous SCSI request. Only commands on the pending list can be
1954  * aborted. All the commands issued to the F/W must complete.
1955  */
1956 static int
1957 megaraid_abort(Scsi_Cmnd *cmd)
1958 {
1959         adapter_t       *adapter;
1960         int             rval;
1961
1962         adapter = (adapter_t *)cmd->device->host->hostdata;
1963
1964         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1965
1966         /*
1967          * This is required here to complete any completed requests
1968          * to be communicated over to the mid layer.
1969          */
1970         mega_rundoneq(adapter);
1971
1972         return rval;
1973 }
1974
1975
1976 static int
1977 megaraid_reset(struct scsi_cmnd *cmd)
1978 {
1979         adapter_t       *adapter;
1980         megacmd_t       mc;
1981         int             rval;
1982
1983         adapter = (adapter_t *)cmd->device->host->hostdata;
1984
1985 #if MEGA_HAVE_CLUSTERING
1986         mc.cmd = MEGA_CLUSTER_CMD;
1987         mc.opcode = MEGA_RESET_RESERVATIONS;
1988
1989         if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1990                 printk(KERN_WARNING
1991                                 "megaraid: reservation reset failed.\n");
1992         }
1993         else {
1994                 printk(KERN_INFO "megaraid: reservation reset.\n");
1995         }
1996 #endif
1997
1998         spin_lock_irq(&adapter->lock);
1999
2000         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
2001
2002         /*
2003          * This is required here to complete any completed requests
2004          * to be communicated over to the mid layer.
2005          */
2006         mega_rundoneq(adapter);
2007         spin_unlock_irq(&adapter->lock);
2008
2009         return rval;
2010 }
2011
2012 /**
2013  * megaraid_abort_and_reset()
2014  * @adapter - megaraid soft state
2015  * @cmd - scsi command to be aborted or reset
2016  * @aor - abort or reset flag
2017  *
2018  * Try to locate the scsi command in the pending queue. If found and is not
2019  * issued to the controller, abort/reset it. Otherwise return failure
2020  */
2021 static int
2022 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2023 {
2024         struct list_head        *pos, *next;
2025         scb_t                   *scb;
2026
2027         printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2028              (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2029              cmd->cmnd[0], cmd->device->channel,
2030              cmd->device->id, cmd->device->lun);
2031
2032         if(list_empty(&adapter->pending_list))
2033                 return FALSE;
2034
2035         list_for_each_safe(pos, next, &adapter->pending_list) {
2036
2037                 scb = list_entry(pos, scb_t, list);
2038
2039                 if (scb->cmd == cmd) { /* Found command */
2040
2041                         scb->state |= aor;
2042
2043                         /*
2044                          * Check if this command has firmare owenership. If
2045                          * yes, we cannot reset this command. Whenever, f/w
2046                          * completes this command, we will return appropriate
2047                          * status from ISR.
2048                          */
2049                         if( scb->state & SCB_ISSUED ) {
2050
2051                                 printk(KERN_WARNING
2052                                         "megaraid: %s-%lx[%x], fw owner.\n",
2053                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
2054                                         cmd->serial_number, scb->idx);
2055
2056                                 return FALSE;
2057                         }
2058                         else {
2059
2060                                 /*
2061                                  * Not yet issued! Remove from the pending
2062                                  * list
2063                                  */
2064                                 printk(KERN_WARNING
2065                                         "megaraid: %s-%lx[%x], driver owner.\n",
2066                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
2067                                         cmd->serial_number, scb->idx);
2068
2069                                 mega_free_scb(adapter, scb);
2070
2071                                 if( aor == SCB_ABORT ) {
2072                                         cmd->result = (DID_ABORT << 16);
2073                                 }
2074                                 else {
2075                                         cmd->result = (DID_RESET << 16);
2076                                 }
2077
2078                                 list_add_tail(SCSI_LIST(cmd),
2079                                                 &adapter->completed_list);
2080
2081                                 return TRUE;
2082                         }
2083                 }
2084         }
2085
2086         return FALSE;
2087 }
2088
2089 static inline int
2090 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2091 {
2092         *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2093
2094         if( *pdev == NULL ) return -1;
2095
2096         memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2097
2098         if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2099                 kfree(*pdev);
2100                 return -1;
2101         }
2102
2103         return 0;
2104 }
2105
2106 static inline void
2107 free_local_pdev(struct pci_dev *pdev)
2108 {
2109         kfree(pdev);
2110 }
2111
2112 /**
2113  * mega_allocate_inquiry()
2114  * @dma_handle - handle returned for dma address
2115  * @pdev - handle to pci device
2116  *
2117  * allocates memory for inquiry structure
2118  */
2119 static inline void *
2120 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2121 {
2122         return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2123 }
2124
2125
2126 static inline void
2127 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2128 {
2129         pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2130 }
2131
2132
2133 #ifdef CONFIG_PROC_FS
2134 /* Following code handles /proc fs  */
2135
2136 #define CREATE_READ_PROC(string, func)  create_proc_read_entry(string,  \
2137                                         S_IRUSR | S_IFREG,              \
2138                                         controller_proc_dir_entry,      \
2139                                         func, adapter)
2140
2141 /**
2142  * mega_create_proc_entry()
2143  * @index - index in soft state array
2144  * @parent - parent node for this /proc entry
2145  *
2146  * Creates /proc entries for our controllers.
2147  */
2148 static void
2149 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2150 {
2151         struct proc_dir_entry   *controller_proc_dir_entry = NULL;
2152         u8              string[64] = { 0 };
2153         adapter_t       *adapter = hba_soft_state[index];
2154
2155         sprintf(string, "hba%d", adapter->host->host_no);
2156
2157         controller_proc_dir_entry =
2158                 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2159
2160         if(!controller_proc_dir_entry) {
2161                 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2162                 return;
2163         }
2164         adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2165         adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2166         adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2167 #if MEGA_HAVE_ENH_PROC
2168         adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2169         adapter->proc_battery = CREATE_READ_PROC("battery-status",
2170                         proc_battery);
2171
2172         /*
2173          * Display each physical drive on its channel
2174          */
2175         adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2176                                         proc_pdrv_ch0);
2177         adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2178                                         proc_pdrv_ch1);
2179         adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2180                                         proc_pdrv_ch2);
2181         adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2182                                         proc_pdrv_ch3);
2183
2184         /*
2185          * Display a set of up to 10 logical drive through each of following
2186          * /proc entries
2187          */
2188         adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2189                                         proc_rdrv_10);
2190         adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2191                                         proc_rdrv_20);
2192         adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2193                                         proc_rdrv_30);
2194         adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2195                                         proc_rdrv_40);
2196 #endif
2197 }
2198
2199
2200 /**
2201  * proc_read_config()
2202  * @page - buffer to write the data in
2203  * @start - where the actual data has been written in page
2204  * @offset - same meaning as the read system call
2205  * @count - same meaning as the read system call
2206  * @eof - set if no more data needs to be returned
2207  * @data - pointer to our soft state
2208  *
2209  * Display configuration information about the controller.
2210  */
2211 static int
2212 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2213                 void *data)
2214 {
2215
2216         adapter_t *adapter = (adapter_t *)data;
2217         int len = 0;
2218
2219         len += sprintf(page+len, "%s", MEGARAID_VERSION);
2220
2221         if(adapter->product_info.product_name[0])
2222                 len += sprintf(page+len, "%s\n",
2223                                 adapter->product_info.product_name);
2224
2225         len += sprintf(page+len, "Controller Type: ");
2226
2227         if( adapter->flag & BOARD_MEMMAP ) {
2228                 len += sprintf(page+len,
2229                         "438/466/467/471/493/518/520/531/532\n");
2230         }
2231         else {
2232                 len += sprintf(page+len,
2233                         "418/428/434\n");
2234         }
2235
2236         if(adapter->flag & BOARD_40LD) {
2237                 len += sprintf(page+len,
2238                                 "Controller Supports 40 Logical Drives\n");
2239         }
2240
2241         if(adapter->flag & BOARD_64BIT) {
2242                 len += sprintf(page+len,
2243                 "Controller capable of 64-bit memory addressing\n");
2244         }
2245         if( adapter->has_64bit_addr ) {
2246                 len += sprintf(page+len,
2247                         "Controller using 64-bit memory addressing\n");
2248         }
2249         else {
2250                 len += sprintf(page+len,
2251                         "Controller is not using 64-bit memory addressing\n");
2252         }
2253
2254         len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2255                         adapter->host->irq);
2256
2257         len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2258                         adapter->numldrv, adapter->product_info.nchannels);
2259
2260         len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2261                         adapter->fw_version, adapter->bios_version,
2262                         adapter->product_info.dram_size);
2263
2264         len += sprintf(page+len,
2265                 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2266                 adapter->product_info.max_commands, adapter->max_cmds);
2267
2268         len += sprintf(page+len, "support_ext_cdb    = %d\n",
2269                         adapter->support_ext_cdb);
2270         len += sprintf(page+len, "support_random_del = %d\n",
2271                         adapter->support_random_del);
2272         len += sprintf(page+len, "boot_ldrv_enabled  = %d\n",
2273                         adapter->boot_ldrv_enabled);
2274         len += sprintf(page+len, "boot_ldrv          = %d\n",
2275                         adapter->boot_ldrv);
2276         len += sprintf(page+len, "boot_pdrv_enabled  = %d\n",
2277                         adapter->boot_pdrv_enabled);
2278         len += sprintf(page+len, "boot_pdrv_ch       = %d\n",
2279                         adapter->boot_pdrv_ch);
2280         len += sprintf(page+len, "boot_pdrv_tgt      = %d\n",
2281                         adapter->boot_pdrv_tgt);
2282         len += sprintf(page+len, "quiescent          = %d\n",
2283                         atomic_read(&adapter->quiescent));
2284         len += sprintf(page+len, "has_cluster        = %d\n",
2285                         adapter->has_cluster);
2286
2287         len += sprintf(page+len, "\nModule Parameters:\n");
2288         len += sprintf(page+len, "max_cmd_per_lun    = %d\n",
2289                         max_cmd_per_lun);
2290         len += sprintf(page+len, "max_sectors_per_io = %d\n",
2291                         max_sectors_per_io);
2292
2293         *eof = 1;
2294
2295         return len;
2296 }
2297
2298
2299
2300 /**
2301  * proc_read_stat()
2302  * @page - buffer to write the data in
2303  * @start - where the actual data has been written in page
2304  * @offset - same meaning as the read system call
2305  * @count - same meaning as the read system call
2306  * @eof - set if no more data needs to be returned
2307  * @data - pointer to our soft state
2308  *
2309  * Diaplay statistical information about the I/O activity.
2310  */
2311 static int
2312 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2313                 void *data)
2314 {
2315         adapter_t       *adapter;
2316         int     len;
2317         int     i;
2318
2319         i = 0;  /* avoid compilation warnings */
2320         len = 0;
2321         adapter = (adapter_t *)data;
2322
2323         len = sprintf(page, "Statistical Information for this controller\n");
2324         len += sprintf(page+len, "pend_cmds = %d\n",
2325                         atomic_read(&adapter->pend_cmds));
2326 #if MEGA_HAVE_STATS
2327         for(i = 0; i < adapter->numldrv; i++) {
2328                 len += sprintf(page+len, "Logical Drive %d:\n", i);
2329
2330                 len += sprintf(page+len,
2331                         "\tReads Issued = %lu, Writes Issued = %lu\n",
2332                         adapter->nreads[i], adapter->nwrites[i]);
2333
2334                 len += sprintf(page+len,
2335                         "\tSectors Read = %lu, Sectors Written = %lu\n",
2336                         adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2337
2338                 len += sprintf(page+len,
2339                         "\tRead errors = %lu, Write errors = %lu\n\n",
2340                         adapter->rd_errors[i], adapter->wr_errors[i]);
2341         }
2342 #else
2343         len += sprintf(page+len,
2344                         "IO and error counters not compiled in driver.\n");
2345 #endif
2346
2347         *eof = 1;
2348
2349         return len;
2350 }
2351
2352
2353 /**
2354  * proc_read_mbox()
2355  * @page - buffer to write the data in
2356  * @start - where the actual data has been written in page
2357  * @offset - same meaning as the read system call
2358  * @count - same meaning as the read system call
2359  * @eof - set if no more data needs to be returned
2360  * @data - pointer to our soft state
2361  *
2362  * Display mailbox information for the last command issued. This information
2363  * is good for debugging.
2364  */
2365 static int
2366 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2367                 void *data)
2368 {
2369
2370         adapter_t       *adapter = (adapter_t *)data;
2371         volatile mbox_t *mbox = adapter->mbox;
2372         int     len = 0;
2373
2374         len = sprintf(page, "Contents of Mail Box Structure\n");
2375         len += sprintf(page+len, "  Fw Command   = 0x%02x\n",
2376                         mbox->m_out.cmd);
2377         len += sprintf(page+len, "  Cmd Sequence = 0x%02x\n",
2378                         mbox->m_out.cmdid);
2379         len += sprintf(page+len, "  No of Sectors= %04d\n",
2380                         mbox->m_out.numsectors);
2381         len += sprintf(page+len, "  LBA          = 0x%02x\n",
2382                         mbox->m_out.lba);
2383         len += sprintf(page+len, "  DTA          = 0x%08x\n",
2384                         mbox->m_out.xferaddr);
2385         len += sprintf(page+len, "  Logical Drive= 0x%02x\n",
2386                         mbox->m_out.logdrv);
2387         len += sprintf(page+len, "  No of SG Elmt= 0x%02x\n",
2388                         mbox->m_out.numsgelements);
2389         len += sprintf(page+len, "  Busy         = %01x\n",
2390                         mbox->m_in.busy);
2391         len += sprintf(page+len, "  Status       = 0x%02x\n",
2392                         mbox->m_in.status);
2393
2394         *eof = 1;
2395
2396         return len;
2397 }
2398
2399
2400 /**
2401  * proc_rebuild_rate()
2402  * @page - buffer to write the data in
2403  * @start - where the actual data has been written in page
2404  * @offset - same meaning as the read system call
2405  * @count - same meaning as the read system call
2406  * @eof - set if no more data needs to be returned
2407  * @data - pointer to our soft state
2408  *
2409  * Display current rebuild rate
2410  */
2411 static int
2412 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2413                 void *data)
2414 {
2415         adapter_t       *adapter = (adapter_t *)data;
2416         dma_addr_t      dma_handle;
2417         caddr_t         inquiry;
2418         struct pci_dev  *pdev;
2419         int     len = 0;
2420
2421         if( make_local_pdev(adapter, &pdev) != 0 ) {
2422                 *eof = 1;
2423                 return len;
2424         }
2425
2426         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2427                 free_local_pdev(pdev);
2428                 *eof = 1;
2429                 return len;
2430         }
2431
2432         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2433
2434                 len = sprintf(page, "Adapter inquiry failed.\n");
2435
2436                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2437
2438                 mega_free_inquiry(inquiry, dma_handle, pdev);
2439
2440                 free_local_pdev(pdev);
2441
2442                 *eof = 1;
2443
2444                 return len;
2445         }
2446
2447         if( adapter->flag & BOARD_40LD ) {
2448                 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2449                         ((mega_inquiry3 *)inquiry)->rebuild_rate);
2450         }
2451         else {
2452                 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2453                         ((mraid_ext_inquiry *)
2454                         inquiry)->raid_inq.adapter_info.rebuild_rate);
2455         }
2456
2457
2458         mega_free_inquiry(inquiry, dma_handle, pdev);
2459
2460         free_local_pdev(pdev);
2461
2462         *eof = 1;
2463
2464         return len;
2465 }
2466
2467
2468 /**
2469  * proc_battery()
2470  * @page - buffer to write the data in
2471  * @start - where the actual data has been written in page
2472  * @offset - same meaning as the read system call
2473  * @count - same meaning as the read system call
2474  * @eof - set if no more data needs to be returned
2475  * @data - pointer to our soft state
2476  *
2477  * Display information about the battery module on the controller.
2478  */
2479 static int
2480 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2481                 void *data)
2482 {
2483         adapter_t       *adapter = (adapter_t *)data;
2484         dma_addr_t      dma_handle;
2485         caddr_t         inquiry;
2486         struct pci_dev  *pdev;
2487         u8      battery_status = 0;
2488         char    str[256];
2489         int     len = 0;
2490
2491         if( make_local_pdev(adapter, &pdev) != 0 ) {
2492                 *eof = 1;
2493                 return len;
2494         }
2495
2496         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2497                 free_local_pdev(pdev);
2498                 *eof = 1;
2499                 return len;
2500         }
2501
2502         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2503
2504                 len = sprintf(page, "Adapter inquiry failed.\n");
2505
2506                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2507
2508                 mega_free_inquiry(inquiry, dma_handle, pdev);
2509
2510                 free_local_pdev(pdev);
2511
2512                 *eof = 1;
2513
2514                 return len;
2515         }
2516
2517         if( adapter->flag & BOARD_40LD ) {
2518                 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2519         }
2520         else {
2521                 battery_status = ((mraid_ext_inquiry *)inquiry)->
2522                         raid_inq.adapter_info.battery_status;
2523         }
2524
2525         /*
2526          * Decode the battery status
2527          */
2528         sprintf(str, "Battery Status:[%d]", battery_status);
2529
2530         if(battery_status == MEGA_BATT_CHARGE_DONE)
2531                 strcat(str, " Charge Done");
2532
2533         if(battery_status & MEGA_BATT_MODULE_MISSING)
2534                 strcat(str, " Module Missing");
2535
2536         if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2537                 strcat(str, " Low Voltage");
2538
2539         if(battery_status & MEGA_BATT_TEMP_HIGH)
2540                 strcat(str, " Temperature High");
2541
2542         if(battery_status & MEGA_BATT_PACK_MISSING)
2543                 strcat(str, " Pack Missing");
2544
2545         if(battery_status & MEGA_BATT_CHARGE_INPROG)
2546                 strcat(str, " Charge In-progress");
2547
2548         if(battery_status & MEGA_BATT_CHARGE_FAIL)
2549                 strcat(str, " Charge Fail");
2550
2551         if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2552                 strcat(str, " Cycles Exceeded");
2553
2554         len = sprintf(page, "%s\n", str);
2555
2556
2557         mega_free_inquiry(inquiry, dma_handle, pdev);
2558
2559         free_local_pdev(pdev);
2560
2561         *eof = 1;
2562
2563         return len;
2564 }
2565
2566
2567 /**
2568  * proc_pdrv_ch0()
2569  * @page - buffer to write the data in
2570  * @start - where the actual data has been written in page
2571  * @offset - same meaning as the read system call
2572  * @count - same meaning as the read system call
2573  * @eof - set if no more data needs to be returned
2574  * @data - pointer to our soft state
2575  *
2576  * Display information about the physical drives on physical channel 0.
2577  */
2578 static int
2579 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2580                 void *data)
2581 {
2582         adapter_t *adapter = (adapter_t *)data;
2583
2584         *eof = 1;
2585
2586         return (proc_pdrv(adapter, page, 0));
2587 }
2588
2589
2590 /**
2591  * proc_pdrv_ch1()
2592  * @page - buffer to write the data in
2593  * @start - where the actual data has been written in page
2594  * @offset - same meaning as the read system call
2595  * @count - same meaning as the read system call
2596  * @eof - set if no more data needs to be returned
2597  * @data - pointer to our soft state
2598  *
2599  * Display information about the physical drives on physical channel 1.
2600  */
2601 static int
2602 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2603                 void *data)
2604 {
2605         adapter_t *adapter = (adapter_t *)data;
2606
2607         *eof = 1;
2608
2609         return (proc_pdrv(adapter, page, 1));
2610 }
2611
2612
2613 /**
2614  * proc_pdrv_ch2()
2615  * @page - buffer to write the data in
2616  * @start - where the actual data has been written in page
2617  * @offset - same meaning as the read system call
2618  * @count - same meaning as the read system call
2619  * @eof - set if no more data needs to be returned
2620  * @data - pointer to our soft state
2621  *
2622  * Display information about the physical drives on physical channel 2.
2623  */
2624 static int
2625 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2626                 void *data)
2627 {
2628         adapter_t *adapter = (adapter_t *)data;
2629
2630         *eof = 1;
2631
2632         return (proc_pdrv(adapter, page, 2));
2633 }
2634
2635
2636 /**
2637  * proc_pdrv_ch3()
2638  * @page - buffer to write the data in
2639  * @start - where the actual data has been written in page
2640  * @offset - same meaning as the read system call
2641  * @count - same meaning as the read system call
2642  * @eof - set if no more data needs to be returned
2643  * @data - pointer to our soft state
2644  *
2645  * Display information about the physical drives on physical channel 3.
2646  */
2647 static int
2648 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2649                 void *data)
2650 {
2651         adapter_t *adapter = (adapter_t *)data;
2652
2653         *eof = 1;
2654
2655         return (proc_pdrv(adapter, page, 3));
2656 }
2657
2658
2659 /**
2660  * proc_pdrv()
2661  * @page - buffer to write the data in
2662  * @adapter - pointer to our soft state
2663  *
2664  * Display information about the physical drives.
2665  */
2666 static int
2667 proc_pdrv(adapter_t *adapter, char *page, int channel)
2668 {
2669         dma_addr_t      dma_handle;
2670         char            *scsi_inq;
2671         dma_addr_t      scsi_inq_dma_handle;
2672         caddr_t         inquiry;
2673         struct pci_dev  *pdev;
2674         u8      *pdrv_state;
2675         u8      state;
2676         int     tgt;
2677         int     max_channels;
2678         int     len = 0;
2679         char    str[80];
2680         int     i;
2681
2682         if( make_local_pdev(adapter, &pdev) != 0 ) {
2683                 return len;
2684         }
2685
2686         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2687                 goto free_pdev;
2688         }
2689
2690         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2691                 len = sprintf(page, "Adapter inquiry failed.\n");
2692
2693                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2694
2695                 goto free_inquiry;
2696         }
2697
2698
2699         scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2700
2701         if( scsi_inq == NULL ) {
2702                 len = sprintf(page, "memory not available for scsi inq.\n");
2703
2704                 goto free_inquiry;
2705         }
2706
2707         if( adapter->flag & BOARD_40LD ) {
2708                 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2709         }
2710         else {
2711                 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2712                         raid_inq.pdrv_info.pdrv_state;
2713         }
2714
2715         max_channels = adapter->product_info.nchannels;
2716
2717         if( channel >= max_channels ) {
2718                 goto free_pci;
2719         }
2720
2721         for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2722
2723                 i = channel*16 + tgt;
2724
2725                 state = *(pdrv_state + i);
2726
2727                 switch( state & 0x0F ) {
2728
2729                 case PDRV_ONLINE:
2730                         sprintf(str,
2731                         "Channel:%2d Id:%2d State: Online",
2732                                 channel, tgt);
2733                         break;
2734
2735                 case PDRV_FAILED:
2736                         sprintf(str,
2737                         "Channel:%2d Id:%2d State: Failed",
2738                                 channel, tgt);
2739                         break;
2740
2741                 case PDRV_RBLD:
2742                         sprintf(str,
2743                         "Channel:%2d Id:%2d State: Rebuild",
2744                                 channel, tgt);
2745                         break;
2746
2747                 case PDRV_HOTSPARE:
2748                         sprintf(str,
2749                         "Channel:%2d Id:%2d State: Hot spare",
2750                                 channel, tgt);
2751                         break;
2752
2753                 default:
2754                         sprintf(str,
2755                         "Channel:%2d Id:%2d State: Un-configured",
2756                                 channel, tgt);
2757                         break;
2758
2759                 }
2760
2761                 /*
2762                  * This interface displays inquiries for disk drives
2763                  * only. Inquries for logical drives and non-disk
2764                  * devices are available through /proc/scsi/scsi
2765                  */
2766                 memset(scsi_inq, 0, 256);
2767                 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2768                                 scsi_inq_dma_handle) ||
2769                                 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2770                         continue;
2771                 }
2772
2773                 /*
2774                  * Check for overflow. We print less than 240
2775                  * characters for inquiry
2776                  */
2777                 if( (len + 240) >= PAGE_SIZE ) break;
2778
2779                 len += sprintf(page+len, "%s.\n", str);
2780
2781                 len += mega_print_inquiry(page+len, scsi_inq);
2782         }
2783
2784 free_pci:
2785         pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2786 free_inquiry:
2787         mega_free_inquiry(inquiry, dma_handle, pdev);
2788 free_pdev:
2789         free_local_pdev(pdev);
2790
2791         return len;
2792 }
2793
2794
2795 /*
2796  * Display scsi inquiry
2797  */
2798 static int
2799 mega_print_inquiry(char *page, char *scsi_inq)
2800 {
2801         int     len = 0;
2802         int     i;
2803
2804         len = sprintf(page, "  Vendor: ");
2805         for( i = 8; i < 16; i++ ) {
2806                 len += sprintf(page+len, "%c", scsi_inq[i]);
2807         }
2808
2809         len += sprintf(page+len, "  Model: ");
2810
2811         for( i = 16; i < 32; i++ ) {
2812                 len += sprintf(page+len, "%c", scsi_inq[i]);
2813         }
2814
2815         len += sprintf(page+len, "  Rev: ");
2816
2817         for( i = 32; i < 36; i++ ) {
2818                 len += sprintf(page+len, "%c", scsi_inq[i]);
2819         }
2820
2821         len += sprintf(page+len, "\n");
2822
2823         i = scsi_inq[0] & 0x1f;
2824
2825         len += sprintf(page+len, "  Type:   %s ",
2826                 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2827                    "Unknown          ");
2828
2829         len += sprintf(page+len,
2830         "                 ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2831
2832         if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2833                 len += sprintf(page+len, " CCS\n");
2834         else
2835                 len += sprintf(page+len, "\n");
2836
2837         return len;
2838 }
2839
2840
2841 /**
2842  * proc_rdrv_10()
2843  * @page - buffer to write the data in
2844  * @start - where the actual data has been written in page
2845  * @offset - same meaning as the read system call
2846  * @count - same meaning as the read system call
2847  * @eof - set if no more data needs to be returned
2848  * @data - pointer to our soft state
2849  *
2850  * Display real time information about the logical drives 0 through 9.
2851  */
2852 static int
2853 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2854                 void *data)
2855 {
2856         adapter_t *adapter = (adapter_t *)data;
2857
2858         *eof = 1;
2859
2860         return (proc_rdrv(adapter, page, 0, 9));
2861 }
2862
2863
2864 /**
2865  * proc_rdrv_20()
2866  * @page - buffer to write the data in
2867  * @start - where the actual data has been written in page
2868  * @offset - same meaning as the read system call
2869  * @count - same meaning as the read system call
2870  * @eof - set if no more data needs to be returned
2871  * @data - pointer to our soft state
2872  *
2873  * Display real time information about the logical drives 0 through 9.
2874  */
2875 static int
2876 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2877                 void *data)
2878 {
2879         adapter_t *adapter = (adapter_t *)data;
2880
2881         *eof = 1;
2882
2883         return (proc_rdrv(adapter, page, 10, 19));
2884 }
2885
2886
2887 /**
2888  * proc_rdrv_30()
2889  * @page - buffer to write the data in
2890  * @start - where the actual data has been written in page
2891  * @offset - same meaning as the read system call
2892  * @count - same meaning as the read system call
2893  * @eof - set if no more data needs to be returned
2894  * @data - pointer to our soft state
2895  *
2896  * Display real time information about the logical drives 0 through 9.
2897  */
2898 static int
2899 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2900                 void *data)
2901 {
2902         adapter_t *adapter = (adapter_t *)data;
2903
2904         *eof = 1;
2905
2906         return (proc_rdrv(adapter, page, 20, 29));
2907 }
2908
2909
2910 /**
2911  * proc_rdrv_40()
2912  * @page - buffer to write the data in
2913  * @start - where the actual data has been written in page
2914  * @offset - same meaning as the read system call
2915  * @count - same meaning as the read system call
2916  * @eof - set if no more data needs to be returned
2917  * @data - pointer to our soft state
2918  *
2919  * Display real time information about the logical drives 0 through 9.
2920  */
2921 static int
2922 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2923                 void *data)
2924 {
2925         adapter_t *adapter = (adapter_t *)data;
2926
2927         *eof = 1;
2928
2929         return (proc_rdrv(adapter, page, 30, 39));
2930 }
2931
2932
2933 /**
2934  * proc_rdrv()
2935  * @page - buffer to write the data in
2936  * @adapter - pointer to our soft state
2937  * @start - starting logical drive to display
2938  * @end - ending logical drive to display
2939  *
2940  * We do not print the inquiry information since its already available through
2941  * /proc/scsi/scsi interface
2942  */
2943 static int
2944 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2945 {
2946         dma_addr_t      dma_handle;
2947         logdrv_param    *lparam;
2948         megacmd_t       mc;
2949         char            *disk_array;
2950         dma_addr_t      disk_array_dma_handle;
2951         caddr_t         inquiry;
2952         struct pci_dev  *pdev;
2953         u8      *rdrv_state;
2954         int     num_ldrv;
2955         u32     array_sz;
2956         int     len = 0;
2957         int     i;
2958
2959         if( make_local_pdev(adapter, &pdev) != 0 ) {
2960                 return len;
2961         }
2962
2963         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2964                 free_local_pdev(pdev);
2965                 return len;
2966         }
2967
2968         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2969
2970                 len = sprintf(page, "Adapter inquiry failed.\n");
2971
2972                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2973
2974                 mega_free_inquiry(inquiry, dma_handle, pdev);
2975
2976                 free_local_pdev(pdev);
2977
2978                 return len;
2979         }
2980
2981         memset(&mc, 0, sizeof(megacmd_t));
2982
2983         if( adapter->flag & BOARD_40LD ) {
2984                 array_sz = sizeof(disk_array_40ld);
2985
2986                 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2987
2988                 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2989         }
2990         else {
2991                 array_sz = sizeof(disk_array_8ld);
2992
2993                 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2994                         raid_inq.logdrv_info.ldrv_state;
2995
2996                 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2997                         raid_inq.logdrv_info.num_ldrv;
2998         }
2999
3000         disk_array = pci_alloc_consistent(pdev, array_sz,
3001                         &disk_array_dma_handle);
3002
3003         if( disk_array == NULL ) {
3004                 len = sprintf(page, "memory not available.\n");
3005
3006                 mega_free_inquiry(inquiry, dma_handle, pdev);
3007
3008                 free_local_pdev(pdev);
3009
3010                 return len;
3011         }
3012
3013         mc.xferaddr = (u32)disk_array_dma_handle;
3014
3015         if( adapter->flag & BOARD_40LD ) {
3016                 mc.cmd = FC_NEW_CONFIG;
3017                 mc.opcode = OP_DCMD_READ_CONFIG;
3018
3019                 if( mega_internal_command(adapter, &mc, NULL) ) {
3020
3021                         len = sprintf(page, "40LD read config failed.\n");
3022
3023                         mega_free_inquiry(inquiry, dma_handle, pdev);
3024
3025                         pci_free_consistent(pdev, array_sz, disk_array,
3026                                         disk_array_dma_handle);
3027
3028                         free_local_pdev(pdev);
3029
3030                         return len;
3031                 }
3032
3033         }
3034         else {
3035                 mc.cmd = NEW_READ_CONFIG_8LD;
3036
3037                 if( mega_internal_command(adapter, &mc, NULL) ) {
3038
3039                         mc.cmd = READ_CONFIG_8LD;
3040
3041                         if( mega_internal_command(adapter, &mc,
3042                                                 NULL) ){
3043
3044                                 len = sprintf(page,
3045                                         "8LD read config failed.\n");
3046
3047                                 mega_free_inquiry(inquiry, dma_handle, pdev);
3048
3049                                 pci_free_consistent(pdev, array_sz,
3050                                                 disk_array,
3051                                                 disk_array_dma_handle);
3052
3053                                 free_local_pdev(pdev);
3054
3055                                 return len;
3056                         }
3057                 }
3058         }
3059
3060         for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3061
3062                 if( adapter->flag & BOARD_40LD ) {
3063                         lparam =
3064                         &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3065                 }
3066                 else {
3067                         lparam =
3068                         &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3069                 }
3070
3071                 /*
3072                  * Check for overflow. We print less than 240 characters for
3073                  * information about each logical drive.
3074                  */
3075                 if( (len + 240) >= PAGE_SIZE ) break;
3076
3077                 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3078
3079                 switch( rdrv_state[i] & 0x0F ) {
3080                 case RDRV_OFFLINE:
3081                         len += sprintf(page+len, "state: offline");
3082                         break;
3083
3084                 case RDRV_DEGRADED:
3085                         len += sprintf(page+len, "state: degraded");
3086                         break;
3087
3088                 case RDRV_OPTIMAL:
3089                         len += sprintf(page+len, "state: optimal");
3090                         break;
3091
3092                 case RDRV_DELETED:
3093                         len += sprintf(page+len, "state: deleted");
3094                         break;
3095
3096                 default:
3097                         len += sprintf(page+len, "state: unknown");
3098                         break;
3099                 }
3100
3101                 /*
3102                  * Check if check consistency or initialization is going on
3103                  * for this logical drive.
3104                  */
3105                 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3106                         len += sprintf(page+len,
3107                                         ", check-consistency in progress");
3108                 }
3109                 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3110                         len += sprintf(page+len,
3111                                         ", initialization in progress");
3112                 }
3113
3114                 len += sprintf(page+len, "\n");
3115
3116                 len += sprintf(page+len, "Span depth:%3d, ",
3117                                 lparam->span_depth);
3118
3119                 len += sprintf(page+len, "RAID level:%3d, ",
3120                                 lparam->level);
3121
3122                 len += sprintf(page+len, "Stripe size:%3d, ",
3123                                 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3124
3125                 len += sprintf(page+len, "Row size:%3d\n",
3126                                 lparam->row_size);
3127
3128
3129                 len += sprintf(page+len, "Read Policy: ");
3130
3131                 switch(lparam->read_ahead) {
3132
3133                 case NO_READ_AHEAD:
3134                         len += sprintf(page+len, "No read ahead, ");
3135                         break;
3136
3137                 case READ_AHEAD:
3138                         len += sprintf(page+len, "Read ahead, ");
3139                         break;
3140
3141                 case ADAP_READ_AHEAD:
3142                         len += sprintf(page+len, "Adaptive, ");
3143                         break;
3144
3145                 }
3146
3147                 len += sprintf(page+len, "Write Policy: ");
3148
3149                 switch(lparam->write_mode) {
3150
3151                 case WRMODE_WRITE_THRU:
3152                         len += sprintf(page+len, "Write thru, ");
3153                         break;
3154
3155                 case WRMODE_WRITE_BACK:
3156                         len += sprintf(page+len, "Write back, ");
3157                         break;
3158                 }
3159
3160                 len += sprintf(page+len, "Cache Policy: ");
3161
3162                 switch(lparam->direct_io) {
3163
3164                 case CACHED_IO:
3165                         len += sprintf(page+len, "Cached IO\n\n");
3166                         break;
3167
3168                 case DIRECT_IO:
3169                         len += sprintf(page+len, "Direct IO\n\n");
3170                         break;
3171                 }
3172         }
3173
3174         mega_free_inquiry(inquiry, dma_handle, pdev);
3175
3176         pci_free_consistent(pdev, array_sz, disk_array,
3177                         disk_array_dma_handle);
3178
3179         free_local_pdev(pdev);
3180
3181         return len;
3182 }
3183
3184 #endif
3185
3186
3187 /**
3188  * megaraid_biosparam()
3189  *
3190  * Return the disk geometry for a particular disk
3191  */
3192 static int
3193 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3194                     sector_t capacity, int geom[])
3195 {
3196         adapter_t       *adapter;
3197         unsigned char   *bh;
3198         int     heads;
3199         int     sectors;
3200         int     cylinders;
3201         int     rval;
3202
3203         /* Get pointer to host config structure */
3204         adapter = (adapter_t *)sdev->host->hostdata;
3205
3206         if (IS_RAID_CH(adapter, sdev->channel)) {
3207                         /* Default heads (64) & sectors (32) */
3208                         heads = 64;
3209                         sectors = 32;
3210                         cylinders = (ulong)capacity / (heads * sectors);
3211
3212                         /*
3213                          * Handle extended translation size for logical drives
3214                          * > 1Gb
3215                          */
3216                         if ((ulong)capacity >= 0x200000) {
3217                                 heads = 255;
3218                                 sectors = 63;
3219                                 cylinders = (ulong)capacity / (heads * sectors);
3220                         }
3221
3222                         /* return result */
3223                         geom[0] = heads;
3224                         geom[1] = sectors;
3225                         geom[2] = cylinders;
3226         }
3227         else {
3228                 bh = scsi_bios_ptable(bdev);
3229
3230                 if( bh ) {
3231                         rval = scsi_partsize(bh, capacity,
3232                                             &geom[2], &geom[0], &geom[1]);
3233                         kfree(bh);
3234                         if( rval != -1 )
3235                                 return rval;
3236                 }
3237
3238                 printk(KERN_INFO
3239                 "megaraid: invalid partition on this disk on channel %d\n",
3240                                 sdev->channel);
3241
3242                 /* Default heads (64) & sectors (32) */
3243                 heads = 64;
3244                 sectors = 32;
3245                 cylinders = (ulong)capacity / (heads * sectors);
3246
3247                 /* Handle extended translation size for logical drives > 1Gb */
3248                 if ((ulong)capacity >= 0x200000) {
3249                         heads = 255;
3250                         sectors = 63;
3251                         cylinders = (ulong)capacity / (heads * sectors);
3252                 }
3253
3254                 /* return result */
3255                 geom[0] = heads;
3256                 geom[1] = sectors;
3257                 geom[2] = cylinders;
3258         }
3259
3260         return 0;
3261 }
3262
3263 /**
3264  * mega_init_scb()
3265  * @adapter - pointer to our soft state
3266  *
3267  * Allocate memory for the various pointers in the scb structures:
3268  * scatter-gather list pointer, passthru and extended passthru structure
3269  * pointers.
3270  */
3271 static int
3272 mega_init_scb(adapter_t *adapter)
3273 {
3274         scb_t   *scb;
3275         int     i;
3276
3277         for( i = 0; i < adapter->max_cmds; i++ ) {
3278
3279                 scb = &adapter->scb_list[i];
3280
3281                 scb->sgl64 = NULL;
3282                 scb->sgl = NULL;
3283                 scb->pthru = NULL;
3284                 scb->epthru = NULL;
3285         }
3286
3287         for( i = 0; i < adapter->max_cmds; i++ ) {
3288
3289                 scb = &adapter->scb_list[i];
3290
3291                 scb->idx = i;
3292
3293                 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3294                                 sizeof(mega_sgl64) * adapter->sglen,
3295                                 &scb->sgl_dma_addr);
3296
3297                 scb->sgl = (mega_sglist *)scb->sgl64;
3298
3299                 if( !scb->sgl ) {
3300                         printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3301                         mega_free_sgl(adapter);
3302                         return -1;
3303                 }
3304
3305                 scb->pthru = pci_alloc_consistent(adapter->dev,
3306                                 sizeof(mega_passthru),
3307                                 &scb->pthru_dma_addr);
3308
3309                 if( !scb->pthru ) {
3310                         printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3311                         mega_free_sgl(adapter);
3312                         return -1;
3313                 }
3314
3315                 scb->epthru = pci_alloc_consistent(adapter->dev,
3316                                 sizeof(mega_ext_passthru),
3317                                 &scb->epthru_dma_addr);
3318
3319                 if( !scb->epthru ) {
3320                         printk(KERN_WARNING
3321                                 "Can't allocate extended passthru.\n");
3322                         mega_free_sgl(adapter);
3323                         return -1;
3324                 }
3325
3326
3327                 scb->dma_type = MEGA_DMA_TYPE_NONE;
3328
3329                 /*
3330                  * Link to free list
3331                  * lock not required since we are loading the driver, so no
3332                  * commands possible right now.
3333                  */
3334                 scb->state = SCB_FREE;
3335                 scb->cmd = NULL;
3336                 list_add(&scb->list, &adapter->free_list);
3337         }
3338
3339         return 0;
3340 }
3341
3342
3343 /**
3344  * megadev_open()
3345  * @inode - unused
3346  * @filep - unused
3347  *
3348  * Routines for the character/ioctl interface to the driver. Find out if this
3349  * is a valid open. If yes, increment the module use count so that it cannot
3350  * be unloaded.
3351  */
3352 static int
3353 megadev_open (struct inode *inode, struct file *filep)
3354 {
3355         /*
3356          * Only allow superuser to access private ioctl interface
3357          */
3358         if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3359
3360         return 0;
3361 }
3362
3363
3364 /**
3365  * megadev_ioctl()
3366  * @inode - Our device inode
3367  * @filep - unused
3368  * @cmd - ioctl command
3369  * @arg - user buffer
3370  *
3371  * ioctl entry point for our private ioctl interface. We move the data in from
3372  * the user space, prepare the command (if necessary, convert the old MIMD
3373  * ioctl to new ioctl command), and issue a synchronous command to the
3374  * controller.
3375  */
3376 static int
3377 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3378                 unsigned long arg)
3379 {
3380         adapter_t       *adapter;
3381         nitioctl_t      uioc;
3382         int             adapno;
3383         int             rval;
3384         mega_passthru   __user *upthru; /* user address for passthru */
3385         mega_passthru   *pthru;         /* copy user passthru here */
3386         dma_addr_t      pthru_dma_hndl;
3387         void            *data = NULL;   /* data to be transferred */
3388         dma_addr_t      data_dma_hndl;  /* dma handle for data xfer area */
3389         megacmd_t       mc;
3390         megastat_t      __user *ustats;
3391         int             num_ldrv;
3392         u32             uxferaddr = 0;
3393         struct pci_dev  *pdev;
3394
3395         ustats = NULL; /* avoid compilation warnings */
3396         num_ldrv = 0;
3397
3398         /*
3399          * Make sure only USCSICMD are issued through this interface.
3400          * MIMD application would still fire different command.
3401          */
3402         if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3403                 return -EINVAL;
3404         }
3405
3406         /*
3407          * Check and convert a possible MIMD command to NIT command.
3408          * mega_m_to_n() copies the data from the user space, so we do not
3409          * have to do it here.
3410          * NOTE: We will need some user address to copyout the data, therefore
3411          * the inteface layer will also provide us with the required user
3412          * addresses.
3413          */
3414         memset(&uioc, 0, sizeof(nitioctl_t));
3415         if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3416                 return rval;
3417
3418
3419         switch( uioc.opcode ) {
3420
3421         case GET_DRIVER_VER:
3422                 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3423                         return (-EFAULT);
3424
3425                 break;
3426
3427         case GET_N_ADAP:
3428                 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3429                         return (-EFAULT);
3430
3431                 /*
3432                  * Shucks. MIMD interface returns a positive value for number
3433                  * of adapters. TODO: Change it to return 0 when there is no
3434                  * applicatio using mimd interface.
3435                  */
3436                 return hba_count;
3437
3438         case GET_ADAP_INFO:
3439
3440                 /*
3441                  * Which adapter
3442                  */
3443                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3444                         return (-ENODEV);
3445
3446                 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3447                                 sizeof(struct mcontroller)) )
3448                         return (-EFAULT);
3449                 break;
3450
3451 #if MEGA_HAVE_STATS
3452
3453         case GET_STATS:
3454                 /*
3455                  * Which adapter
3456                  */
3457                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3458                         return (-ENODEV);
3459
3460                 adapter = hba_soft_state[adapno];
3461
3462                 ustats = uioc.uioc_uaddr;
3463
3464                 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3465                         return (-EFAULT);
3466
3467                 /*
3468                  * Check for the validity of the logical drive number
3469                  */
3470                 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3471
3472                 if( copy_to_user(ustats->nreads, adapter->nreads,
3473                                         num_ldrv*sizeof(u32)) )
3474                         return -EFAULT;
3475
3476                 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3477                                         num_ldrv*sizeof(u32)) )
3478                         return -EFAULT;
3479
3480                 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3481                                         num_ldrv*sizeof(u32)) )
3482                         return -EFAULT;
3483
3484                 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3485                                         num_ldrv*sizeof(u32)) )
3486                         return -EFAULT;
3487
3488                 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3489                                         num_ldrv*sizeof(u32)) )
3490                         return -EFAULT;
3491
3492                 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3493                                         num_ldrv*sizeof(u32)) )
3494                         return -EFAULT;
3495
3496                 return 0;
3497
3498 #endif
3499         case MBOX_CMD:
3500
3501                 /*
3502                  * Which adapter
3503                  */
3504                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3505                         return (-ENODEV);
3506
3507                 adapter = hba_soft_state[adapno];
3508
3509                 /*
3510                  * Deletion of logical drive is a special case. The adapter
3511                  * should be quiescent before this command is issued.
3512                  */
3513                 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3514                                 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3515
3516                         /*
3517                          * Do we support this feature
3518                          */
3519                         if( !adapter->support_random_del ) {
3520                                 printk(KERN_WARNING "megaraid: logdrv ");
3521                                 printk("delete on non-supporting F/W.\n");
3522
3523                                 return (-EINVAL);
3524                         }
3525
3526                         rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3527
3528                         if( rval == 0 ) {
3529                                 memset(&mc, 0, sizeof(megacmd_t));
3530
3531                                 mc.status = rval;
3532
3533                                 rval = mega_n_to_m((void __user *)arg, &mc);
3534                         }
3535
3536                         return rval;
3537                 }
3538                 /*
3539                  * This interface only support the regular passthru commands.
3540                  * Reject extended passthru and 64-bit passthru
3541                  */
3542                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3543                         uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3544
3545                         printk(KERN_WARNING "megaraid: rejected passthru.\n");
3546
3547                         return (-EINVAL);
3548                 }
3549
3550                 /*
3551                  * For all internal commands, the buffer must be allocated in
3552                  * <4GB address range
3553                  */
3554                 if( make_local_pdev(adapter, &pdev) != 0 )
3555                         return -EIO;
3556
3557                 /* Is it a passthru command or a DCMD */
3558                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3559                         /* Passthru commands */
3560
3561                         pthru = pci_alloc_consistent(pdev,
3562                                         sizeof(mega_passthru),
3563                                         &pthru_dma_hndl);
3564
3565                         if( pthru == NULL ) {
3566                                 free_local_pdev(pdev);
3567                                 return (-ENOMEM);
3568                         }
3569
3570                         /*
3571                          * The user passthru structure
3572                          */
3573                         upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3574
3575                         /*
3576                          * Copy in the user passthru here.
3577                          */
3578                         if( copy_from_user(pthru, upthru,
3579                                                 sizeof(mega_passthru)) ) {
3580
3581                                 pci_free_consistent(pdev,
3582                                                 sizeof(mega_passthru), pthru,
3583                                                 pthru_dma_hndl);
3584
3585                                 free_local_pdev(pdev);
3586
3587                                 return (-EFAULT);
3588                         }
3589
3590                         /*
3591                          * Is there a data transfer
3592                          */
3593                         if( pthru->dataxferlen ) {
3594                                 data = pci_alloc_consistent(pdev,
3595                                                 pthru->dataxferlen,
3596                                                 &data_dma_hndl);
3597
3598                                 if( data == NULL ) {
3599                                         pci_free_consistent(pdev,
3600                                                         sizeof(mega_passthru),
3601                                                         pthru,
3602                                                         pthru_dma_hndl);
3603
3604                                         free_local_pdev(pdev);
3605
3606                                         return (-ENOMEM);
3607                                 }
3608
3609                                 /*
3610                                  * Save the user address and point the kernel
3611                                  * address at just allocated memory
3612                                  */
3613                                 uxferaddr = pthru->dataxferaddr;
3614                                 pthru->dataxferaddr = data_dma_hndl;
3615                         }
3616
3617
3618                         /*
3619                          * Is data coming down-stream
3620                          */
3621                         if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3622                                 /*
3623                                  * Get the user data
3624                                  */
3625                                 if( copy_from_user(data, (char __user *)uxferaddr,
3626                                                         pthru->dataxferlen) ) {
3627                                         rval = (-EFAULT);
3628                                         goto freemem_and_return;
3629                                 }
3630                         }
3631
3632                         memset(&mc, 0, sizeof(megacmd_t));
3633
3634                         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3635                         mc.xferaddr = (u32)pthru_dma_hndl;
3636
3637                         /*
3638                          * Issue the command
3639                          */
3640                         mega_internal_command(adapter, &mc, pthru);
3641
3642                         rval = mega_n_to_m((void __user *)arg, &mc);
3643
3644                         if( rval ) goto freemem_and_return;
3645
3646
3647                         /*
3648                          * Is data going up-stream
3649                          */
3650                         if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3651                                 if( copy_to_user((char __user *)uxferaddr, data,
3652                                                         pthru->dataxferlen) ) {
3653                                         rval = (-EFAULT);
3654                                 }
3655                         }
3656
3657                         /*
3658                          * Send the request sense data also, irrespective of
3659                          * whether the user has asked for it or not.
3660                          */
3661                         copy_to_user(upthru->reqsensearea,
3662                                         pthru->reqsensearea, 14);
3663
3664 freemem_and_return:
3665                         if( pthru->dataxferlen ) {
3666                                 pci_free_consistent(pdev,
3667                                                 pthru->dataxferlen, data,
3668                                                 data_dma_hndl);
3669                         }
3670
3671                         pci_free_consistent(pdev, sizeof(mega_passthru),
3672                                         pthru, pthru_dma_hndl);
3673
3674                         free_local_pdev(pdev);
3675
3676                         return rval;
3677                 }
3678                 else {
3679                         /* DCMD commands */
3680
3681                         /*
3682                          * Is there a data transfer
3683                          */
3684                         if( uioc.xferlen ) {
3685                                 data = pci_alloc_consistent(pdev,
3686                                                 uioc.xferlen, &data_dma_hndl);
3687
3688                                 if( data == NULL ) {
3689                                         free_local_pdev(pdev);
3690                                         return (-ENOMEM);
3691                                 }
3692
3693                                 uxferaddr = MBOX(uioc)->xferaddr;
3694                         }
3695
3696                         /*
3697                          * Is data coming down-stream
3698                          */
3699                         if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3700                                 /*
3701                                  * Get the user data
3702                                  */
3703                                 if( copy_from_user(data, (char __user *)uxferaddr,
3704                                                         uioc.xferlen) ) {
3705
3706                                         pci_free_consistent(pdev,
3707                                                         uioc.xferlen,
3708                                                         data, data_dma_hndl);
3709
3710                                         free_local_pdev(pdev);
3711
3712                                         return (-EFAULT);
3713                                 }
3714                         }
3715
3716                         memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3717
3718                         mc.xferaddr = (u32)data_dma_hndl;
3719
3720                         /*
3721                          * Issue the command
3722                          */
3723                         mega_internal_command(adapter, &mc, NULL);
3724
3725                         rval = mega_n_to_m((void __user *)arg, &mc);
3726
3727                         if( rval ) {
3728                                 if( uioc.xferlen ) {
3729                                         pci_free_consistent(pdev,
3730                                                         uioc.xferlen, data,
3731                                                         data_dma_hndl);
3732                                 }
3733
3734                                 free_local_pdev(pdev);
3735
3736                                 return rval;
3737                         }
3738
3739                         /*
3740                          * Is data going up-stream
3741                          */
3742                         if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3743                                 if( copy_to_user((char __user *)uxferaddr, data,
3744                                                         uioc.xferlen) ) {
3745
3746                                         rval = (-EFAULT);
3747                                 }
3748                         }
3749
3750                         if( uioc.xferlen ) {
3751                                 pci_free_consistent(pdev,
3752                                                 uioc.xferlen, data,
3753                                                 data_dma_hndl);
3754                         }
3755
3756                         free_local_pdev(pdev);
3757
3758                         return rval;
3759                 }
3760
3761         default:
3762                 return (-EINVAL);
3763         }
3764
3765         return 0;
3766 }
3767
3768 /**
3769  * mega_m_to_n()
3770  * @arg - user address
3771  * @uioc - new ioctl structure
3772  *
3773  * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3774  * structure
3775  *
3776  * Converts the older mimd ioctl structure to newer NIT structure
3777  */
3778 static int
3779 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3780 {
3781         struct uioctl_t uioc_mimd;
3782         char    signature[8] = {0};
3783         u8      opcode;
3784         u8      subopcode;
3785
3786
3787         /*
3788          * check is the application conforms to NIT. We do not have to do much
3789          * in that case.
3790          * We exploit the fact that the signature is stored in the very
3791          * begining of the structure.
3792          */
3793
3794         if( copy_from_user(signature, arg, 7) )
3795                 return (-EFAULT);
3796
3797         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3798
3799                 /*
3800                  * NOTE NOTE: The nit ioctl is still under flux because of
3801                  * change of mailbox definition, in HPE. No applications yet
3802                  * use this interface and let's not have applications use this
3803                  * interface till the new specifitions are in place.
3804                  */
3805                 return -EINVAL;
3806 #if 0
3807                 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3808                         return (-EFAULT);
3809                 return 0;
3810 #endif
3811         }
3812
3813         /*
3814          * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3815          *
3816          * Get the user ioctl structure
3817          */
3818         if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3819                 return (-EFAULT);
3820
3821
3822         /*
3823          * Get the opcode and subopcode for the commands
3824          */
3825         opcode = uioc_mimd.ui.fcs.opcode;
3826         subopcode = uioc_mimd.ui.fcs.subopcode;
3827
3828         switch (opcode) {
3829         case 0x82:
3830
3831                 switch (subopcode) {
3832
3833                 case MEGAIOC_QDRVRVER:  /* Query driver version */
3834                         uioc->opcode = GET_DRIVER_VER;
3835                         uioc->uioc_uaddr = uioc_mimd.data;
3836                         break;
3837
3838                 case MEGAIOC_QNADAP:    /* Get # of adapters */
3839                         uioc->opcode = GET_N_ADAP;
3840                         uioc->uioc_uaddr = uioc_mimd.data;
3841                         break;
3842
3843                 case MEGAIOC_QADAPINFO: /* Get adapter information */
3844                         uioc->opcode = GET_ADAP_INFO;
3845                         uioc->adapno = uioc_mimd.ui.fcs.adapno;
3846                         uioc->uioc_uaddr = uioc_mimd.data;
3847                         break;
3848
3849                 default:
3850                         return(-EINVAL);
3851                 }
3852
3853                 break;
3854
3855
3856         case 0x81:
3857
3858                 uioc->opcode = MBOX_CMD;
3859                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3860
3861                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3862
3863                 uioc->xferlen = uioc_mimd.ui.fcs.length;
3864
3865                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3866                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3867
3868                 break;
3869
3870         case 0x80:
3871
3872                 uioc->opcode = MBOX_CMD;
3873                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3874
3875                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3876
3877                 /*
3878                  * Choose the xferlen bigger of input and output data
3879                  */
3880                 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3881                         uioc_mimd.outlen : uioc_mimd.inlen;
3882
3883                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3884                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3885
3886                 break;
3887
3888         default:
3889                 return (-EINVAL);
3890
3891         }
3892
3893         return 0;
3894 }
3895
3896 /*
3897  * mega_n_to_m()
3898  * @arg - user address
3899  * @mc - mailbox command
3900  *
3901  * Updates the status information to the application, depending on application
3902  * conforms to older mimd ioctl interface or newer NIT ioctl interface
3903  */
3904 static int
3905 mega_n_to_m(void __user *arg, megacmd_t *mc)
3906 {
3907         nitioctl_t      __user *uiocp;
3908         megacmd_t       __user *umc;
3909         mega_passthru   __user *upthru;
3910         struct uioctl_t __user *uioc_mimd;
3911         char    signature[8] = {0};
3912
3913         /*
3914          * check is the application conforms to NIT.
3915          */
3916         if( copy_from_user(signature, arg, 7) )
3917                 return -EFAULT;
3918
3919         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3920
3921                 uiocp = arg;
3922
3923                 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3924                         return (-EFAULT);
3925
3926                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3927
3928                         umc = MBOX_P(uiocp);
3929
3930                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3931                                 return -EFAULT;
3932
3933                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3934                                 return (-EFAULT);
3935                 }
3936         }
3937         else {
3938                 uioc_mimd = arg;
3939
3940                 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3941                         return (-EFAULT);
3942
3943                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3944
3945                         umc = (megacmd_t __user *)uioc_mimd->mbox;
3946
3947                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3948                                 return (-EFAULT);
3949
3950                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3951                                 return (-EFAULT);
3952                 }
3953         }
3954
3955         return 0;
3956 }
3957
3958
3959 /*
3960  * MEGARAID 'FW' commands.
3961  */
3962
3963 /**
3964  * mega_is_bios_enabled()
3965  * @adapter - pointer to our soft state
3966  *
3967  * issue command to find out if the BIOS is enabled for this controller
3968  */
3969 static int
3970 mega_is_bios_enabled(adapter_t *adapter)
3971 {
3972         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3973         mbox_t  *mbox;
3974         int     ret;
3975
3976         mbox = (mbox_t *)raw_mbox;
3977
3978         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3979
3980         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3981
3982         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3983
3984         raw_mbox[0] = IS_BIOS_ENABLED;
3985         raw_mbox[2] = GET_BIOS;
3986
3987
3988         ret = issue_scb_block(adapter, raw_mbox);
3989
3990         return *(char *)adapter->mega_buffer;
3991 }
3992
3993
3994 /**
3995  * mega_enum_raid_scsi()
3996  * @adapter - pointer to our soft state
3997  *
3998  * Find out what channels are RAID/SCSI. This information is used to
3999  * differentiate the virtual channels and physical channels and to support
4000  * ROMB feature and non-disk devices.
4001  */
4002 static void
4003 mega_enum_raid_scsi(adapter_t *adapter)
4004 {
4005         unsigned char raw_mbox[sizeof(struct mbox_out)];
4006         mbox_t *mbox;
4007         int i;
4008
4009         mbox = (mbox_t *)raw_mbox;
4010
4011         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4012
4013         /*
4014          * issue command to find out what channels are raid/scsi
4015          */
4016         raw_mbox[0] = CHNL_CLASS;
4017         raw_mbox[2] = GET_CHNL_CLASS;
4018
4019         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4020
4021         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4022
4023         /*
4024          * Non-ROMB firmware fail this command, so all channels
4025          * must be shown RAID
4026          */
4027         adapter->mega_ch_class = 0xFF;
4028
4029         if(!issue_scb_block(adapter, raw_mbox)) {
4030                 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4031
4032         }
4033
4034         for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4035                 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4036                         printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4037                                         i);
4038                 }
4039                 else {
4040                         printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4041                                         i);
4042                 }
4043         }
4044
4045         return;
4046 }
4047
4048
4049 /**
4050  * mega_get_boot_drv()
4051  * @adapter - pointer to our soft state
4052  *
4053  * Find out which device is the boot device. Note, any logical drive or any
4054  * phyical device (e.g., a CDROM) can be designated as a boot device.
4055  */
4056 static void
4057 mega_get_boot_drv(adapter_t *adapter)
4058 {
4059         struct private_bios_data        *prv_bios_data;
4060         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4061         mbox_t  *mbox;
4062         u16     cksum = 0;
4063         u8      *cksum_p;
4064         u8      boot_pdrv;
4065         int     i;
4066
4067         mbox = (mbox_t *)raw_mbox;
4068
4069         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4070
4071         raw_mbox[0] = BIOS_PVT_DATA;
4072         raw_mbox[2] = GET_BIOS_PVT_DATA;
4073
4074         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4075
4076         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4077
4078         adapter->boot_ldrv_enabled = 0;
4079         adapter->boot_ldrv = 0;
4080
4081         adapter->boot_pdrv_enabled = 0;
4082         adapter->boot_pdrv_ch = 0;
4083         adapter->boot_pdrv_tgt = 0;
4084
4085         if(issue_scb_block(adapter, raw_mbox) == 0) {
4086                 prv_bios_data =
4087                         (struct private_bios_data *)adapter->mega_buffer;
4088
4089                 cksum = 0;
4090                 cksum_p = (char *)prv_bios_data;
4091                 for (i = 0; i < 14; i++ ) {
4092                         cksum += (u16)(*cksum_p++);
4093                 }
4094
4095                 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4096
4097                         /*
4098                          * If MSB is set, a physical drive is set as boot
4099                          * device
4100                          */
4101                         if( prv_bios_data->boot_drv & 0x80 ) {
4102                                 adapter->boot_pdrv_enabled = 1;
4103                                 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4104                                 adapter->boot_pdrv_ch = boot_pdrv / 16;
4105                                 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4106                         }
4107                         else {
4108                                 adapter->boot_ldrv_enabled = 1;
4109                                 adapter->boot_ldrv = prv_bios_data->boot_drv;
4110                         }
4111                 }
4112         }
4113
4114 }
4115
4116 /**
4117  * mega_support_random_del()
4118  * @adapter - pointer to our soft state
4119  *
4120  * Find out if this controller supports random deletion and addition of
4121  * logical drives
4122  */
4123 static int
4124 mega_support_random_del(adapter_t *adapter)
4125 {
4126         unsigned char raw_mbox[sizeof(struct mbox_out)];
4127         mbox_t *mbox;
4128         int rval;
4129
4130         mbox = (mbox_t *)raw_mbox;
4131
4132         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4133
4134         /*
4135          * issue command
4136          */
4137         raw_mbox[0] = FC_DEL_LOGDRV;
4138         raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4139
4140         rval = issue_scb_block(adapter, raw_mbox);
4141
4142         return !rval;
4143 }
4144
4145
4146 /**
4147  * mega_support_ext_cdb()
4148  * @adapter - pointer to our soft state
4149  *
4150  * Find out if this firmware support cdblen > 10
4151  */
4152 static int
4153 mega_support_ext_cdb(adapter_t *adapter)
4154 {
4155         unsigned char raw_mbox[sizeof(struct mbox_out)];
4156         mbox_t *mbox;
4157         int rval;
4158
4159         mbox = (mbox_t *)raw_mbox;
4160
4161         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4162         /*
4163          * issue command to find out if controller supports extended CDBs.
4164          */
4165         raw_mbox[0] = 0xA4;
4166         raw_mbox[2] = 0x16;
4167
4168         rval = issue_scb_block(adapter, raw_mbox);
4169
4170         return !rval;
4171 }
4172
4173
4174 /**
4175  * mega_del_logdrv()
4176  * @adapter - pointer to our soft state
4177  * @logdrv - logical drive to be deleted
4178  *
4179  * Delete the specified logical drive. It is the responsibility of the user
4180  * app to let the OS know about this operation.
4181  */
4182 static int
4183 mega_del_logdrv(adapter_t *adapter, int logdrv)
4184 {
4185         unsigned long flags;
4186         scb_t *scb;
4187         int rval;
4188
4189         /*
4190          * Stop sending commands to the controller, queue them internally.
4191          * When deletion is complete, ISR will flush the queue.
4192          */
4193         atomic_set(&adapter->quiescent, 1);
4194
4195         /*
4196          * Wait till all the issued commands are complete and there are no
4197          * commands in the pending queue
4198          */
4199         while (atomic_read(&adapter->pend_cmds) > 0 ||
4200                !list_empty(&adapter->pending_list))
4201                 msleep(1000);   /* sleep for 1s */
4202
4203         rval = mega_do_del_logdrv(adapter, logdrv);
4204
4205         spin_lock_irqsave(&adapter->lock, flags);
4206
4207         /*
4208          * If delete operation was successful, add 0x80 to the logical drive
4209          * ids for commands in the pending queue.
4210          */
4211         if (adapter->read_ldidmap) {
4212                 struct list_head *pos;
4213                 list_for_each(pos, &adapter->pending_list) {
4214                         scb = list_entry(pos, scb_t, list);
4215                         if (scb->pthru->logdrv < 0x80 )
4216                                 scb->pthru->logdrv += 0x80;
4217                 }
4218         }
4219
4220         atomic_set(&adapter->quiescent, 0);
4221
4222         mega_runpendq(adapter);
4223
4224         spin_unlock_irqrestore(&adapter->lock, flags);
4225
4226         return rval;
4227 }
4228
4229
4230 static int
4231 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4232 {
4233         megacmd_t       mc;
4234         int     rval;
4235
4236         memset( &mc, 0, sizeof(megacmd_t));
4237
4238         mc.cmd = FC_DEL_LOGDRV;
4239         mc.opcode = OP_DEL_LOGDRV;
4240         mc.subopcode = logdrv;
4241
4242         rval = mega_internal_command(adapter, &mc, NULL);
4243
4244         /* log this event */
4245         if(rval) {
4246                 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4247                 return rval;
4248         }
4249
4250         /*
4251          * After deleting first logical drive, the logical drives must be
4252          * addressed by adding 0x80 to the logical drive id.
4253          */
4254         adapter->read_ldidmap = 1;
4255
4256         return rval;
4257 }
4258
4259
4260 /**
4261  * mega_get_max_sgl()
4262  * @adapter - pointer to our soft state
4263  *
4264  * Find out the maximum number of scatter-gather elements supported by this
4265  * version of the firmware
4266  */
4267 static void
4268 mega_get_max_sgl(adapter_t *adapter)
4269 {
4270         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4271         mbox_t  *mbox;
4272
4273         mbox = (mbox_t *)raw_mbox;
4274
4275         memset(mbox, 0, sizeof(raw_mbox));
4276
4277         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4278
4279         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4280
4281         raw_mbox[0] = MAIN_MISC_OPCODE;
4282         raw_mbox[2] = GET_MAX_SG_SUPPORT;
4283
4284
4285         if( issue_scb_block(adapter, raw_mbox) ) {
4286                 /*
4287                  * f/w does not support this command. Choose the default value
4288                  */
4289                 adapter->sglen = MIN_SGLIST;
4290         }
4291         else {
4292                 adapter->sglen = *((char *)adapter->mega_buffer);
4293
4294                 /*
4295                  * Make sure this is not more than the resources we are
4296                  * planning to allocate
4297                  */
4298                 if ( adapter->sglen > MAX_SGLIST )
4299                         adapter->sglen = MAX_SGLIST;
4300         }
4301
4302         return;
4303 }
4304
4305
4306 /**
4307  * mega_support_cluster()
4308  * @adapter - pointer to our soft state
4309  *
4310  * Find out if this firmware support cluster calls.
4311  */
4312 static int
4313 mega_support_cluster(adapter_t *adapter)
4314 {
4315         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4316         mbox_t  *mbox;
4317
4318         mbox = (mbox_t *)raw_mbox;
4319
4320         memset(mbox, 0, sizeof(raw_mbox));
4321
4322         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4323
4324         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4325
4326         /*
4327          * Try to get the initiator id. This command will succeed iff the
4328          * clustering is available on this HBA.
4329          */
4330         raw_mbox[0] = MEGA_GET_TARGET_ID;
4331
4332         if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4333
4334                 /*
4335                  * Cluster support available. Get the initiator target id.
4336                  * Tell our id to mid-layer too.
4337                  */
4338                 adapter->this_id = *(u32 *)adapter->mega_buffer;
4339                 adapter->host->this_id = adapter->this_id;
4340
4341                 return 1;
4342         }
4343
4344         return 0;
4345 }
4346
4347
4348 /**
4349  * mega_adapinq()
4350  * @adapter - pointer to our soft state
4351  * @dma_handle - DMA address of the buffer
4352  *
4353  * Issue internal comamnds while interrupts are available.
4354  * We only issue direct mailbox commands from within the driver. ioctl()
4355  * interface using these routines can issue passthru commands.
4356  */
4357 static int
4358 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4359 {
4360         megacmd_t       mc;
4361
4362         memset(&mc, 0, sizeof(megacmd_t));
4363
4364         if( adapter->flag & BOARD_40LD ) {
4365                 mc.cmd = FC_NEW_CONFIG;
4366                 mc.opcode = NC_SUBOP_ENQUIRY3;
4367                 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4368         }
4369         else {
4370                 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4371         }
4372
4373         mc.xferaddr = (u32)dma_handle;
4374
4375         if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4376                 return -1;
4377         }
4378
4379         return 0;
4380 }
4381
4382
4383 /** mega_internal_dev_inquiry()
4384  * @adapter - pointer to our soft state
4385  * @ch - channel for this device
4386  * @tgt - ID of this device
4387  * @buf_dma_handle - DMA address of the buffer
4388  *
4389  * Issue the scsi inquiry for the specified device.
4390  */
4391 static int
4392 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4393                 dma_addr_t buf_dma_handle)
4394 {
4395         mega_passthru   *pthru;
4396         dma_addr_t      pthru_dma_handle;
4397         megacmd_t       mc;
4398         int             rval;
4399         struct pci_dev  *pdev;
4400
4401
4402         /*
4403          * For all internal commands, the buffer must be allocated in <4GB
4404          * address range
4405          */
4406         if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4407
4408         pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4409                         &pthru_dma_handle);
4410
4411         if( pthru == NULL ) {
4412                 free_local_pdev(pdev);
4413                 return -1;
4414         }
4415
4416         pthru->timeout = 2;
4417         pthru->ars = 1;
4418         pthru->reqsenselen = 14;
4419         pthru->islogical = 0;
4420
4421         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4422
4423         pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4424
4425         pthru->cdblen = 6;
4426
4427         pthru->cdb[0] = INQUIRY;
4428         pthru->cdb[1] = 0;
4429         pthru->cdb[2] = 0;
4430         pthru->cdb[3] = 0;
4431         pthru->cdb[4] = 255;
4432         pthru->cdb[5] = 0;
4433
4434
4435         pthru->dataxferaddr = (u32)buf_dma_handle;
4436         pthru->dataxferlen = 256;
4437
4438         memset(&mc, 0, sizeof(megacmd_t));
4439
4440         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4441         mc.xferaddr = (u32)pthru_dma_handle;
4442
4443         rval = mega_internal_command(adapter, &mc, pthru);
4444
4445         pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4446                         pthru_dma_handle);
4447
4448         free_local_pdev(pdev);
4449
4450         return rval;
4451 }
4452
4453
4454 /**
4455  * mega_internal_command()
4456  * @adapter - pointer to our soft state
4457  * @mc - the mailbox command
4458  * @pthru - Passthru structure for DCDB commands
4459  *
4460  * Issue the internal commands in interrupt mode.
4461  * The last argument is the address of the passthru structure if the command
4462  * to be fired is a passthru command
4463  *
4464  * lockscope specifies whether the caller has already acquired the lock. Of
4465  * course, the caller must know which lock we are talking about.
4466  *
4467  * Note: parameter 'pthru' is null for non-passthru commands.
4468  */
4469 static int
4470 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4471 {
4472         Scsi_Cmnd       *scmd;
4473         struct  scsi_device *sdev;
4474         scb_t   *scb;
4475         int     rval;
4476
4477         /*
4478          * The internal commands share one command id and hence are
4479          * serialized. This is so because we want to reserve maximum number of
4480          * available command ids for the I/O commands.
4481          */
4482         mutex_lock(&adapter->int_mtx);
4483
4484         scb = &adapter->int_scb;
4485         memset(scb, 0, sizeof(scb_t));
4486
4487         scmd = &adapter->int_scmd;
4488         memset(scmd, 0, sizeof(Scsi_Cmnd));
4489
4490         sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4491         memset(sdev, 0, sizeof(struct scsi_device));
4492         scmd->device = sdev;
4493
4494         scmd->device->host = adapter->host;
4495         scmd->buffer = (void *)scb;
4496         scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4497
4498         scb->state |= SCB_ACTIVE;
4499         scb->cmd = scmd;
4500
4501         memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4502
4503         /*
4504          * Is it a passthru command
4505          */
4506         if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4507
4508                 scb->pthru = pthru;
4509         }
4510
4511         scb->idx = CMDID_INT_CMDS;
4512
4513         megaraid_queue(scmd, mega_internal_done);
4514
4515         wait_for_completion(&adapter->int_waitq);
4516
4517         rval = scmd->result;
4518         mc->status = scmd->result;
4519         kfree(sdev);
4520
4521         /*
4522          * Print a debug message for all failed commands. Applications can use
4523          * this information.
4524          */
4525         if( scmd->result && trace_level ) {
4526                 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4527                         mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4528         }
4529
4530         mutex_unlock(&adapter->int_mtx);
4531
4532         return rval;
4533 }
4534
4535
4536 /**
4537  * mega_internal_done()
4538  * @scmd - internal scsi command
4539  *
4540  * Callback routine for internal commands.
4541  */
4542 static void
4543 mega_internal_done(Scsi_Cmnd *scmd)
4544 {
4545         adapter_t       *adapter;
4546
4547         adapter = (adapter_t *)scmd->device->host->hostdata;
4548
4549         complete(&adapter->int_waitq);
4550
4551 }
4552
4553
4554 static struct scsi_host_template megaraid_template = {
4555         .module                         = THIS_MODULE,
4556         .name                           = "MegaRAID",
4557         .proc_name                      = "megaraid_legacy",
4558         .info                           = megaraid_info,
4559         .queuecommand                   = megaraid_queue,
4560         .bios_param                     = megaraid_biosparam,
4561         .max_sectors                    = MAX_SECTORS_PER_IO,
4562         .can_queue                      = MAX_COMMANDS,
4563         .this_id                        = DEFAULT_INITIATOR_ID,
4564         .sg_tablesize                   = MAX_SGLIST,
4565         .cmd_per_lun                    = DEF_CMD_PER_LUN,
4566         .use_clustering                 = ENABLE_CLUSTERING,
4567         .eh_abort_handler               = megaraid_abort,
4568         .eh_device_reset_handler        = megaraid_reset,
4569         .eh_bus_reset_handler           = megaraid_reset,
4570         .eh_host_reset_handler          = megaraid_reset,
4571 };
4572
4573 static int __devinit
4574 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4575 {
4576         struct Scsi_Host *host;
4577         adapter_t *adapter;
4578         unsigned long mega_baseport, tbase, flag = 0;
4579         u16 subsysid, subsysvid;
4580         u8 pci_bus, pci_dev_func;
4581         int irq, i, j;
4582         int error = -ENODEV;
4583
4584         if (pci_enable_device(pdev))
4585                 goto out;
4586         pci_set_master(pdev);
4587
4588         pci_bus = pdev->bus->number;
4589         pci_dev_func = pdev->devfn;
4590
4591         /*
4592          * The megaraid3 stuff reports the ID of the Intel part which is not
4593          * remotely specific to the megaraid
4594          */
4595         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4596                 u16 magic;
4597                 /*
4598                  * Don't fall over the Compaq management cards using the same
4599                  * PCI identifier
4600                  */
4601                 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4602                     pdev->subsystem_device == 0xC000)
4603                         return -ENODEV;
4604                 /* Now check the magic signature byte */
4605                 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4606                 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4607                         return -ENODEV;
4608                 /* Ok it is probably a megaraid */
4609         }
4610
4611         /*
4612          * For these vendor and device ids, signature offsets are not
4613          * valid and 64 bit is implicit
4614          */
4615         if (id->driver_data & BOARD_64BIT)
4616                 flag |= BOARD_64BIT;
4617         else {
4618                 u32 magic64;
4619
4620                 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4621                 if (magic64 == HBA_SIGNATURE_64BIT)
4622                         flag |= BOARD_64BIT;
4623         }
4624
4625         subsysvid = pdev->subsystem_vendor;
4626         subsysid = pdev->subsystem_device;
4627
4628         printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4629                 id->vendor, id->device, pci_bus);
4630
4631         printk("slot %d:func %d\n",
4632                 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4633
4634         /* Read the base port and IRQ from PCI */
4635         mega_baseport = pci_resource_start(pdev, 0);
4636         irq = pdev->irq;
4637
4638         tbase = mega_baseport;
4639         if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4640                 flag |= BOARD_MEMMAP;
4641
4642                 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4643                         printk(KERN_WARNING "megaraid: mem region busy!\n");
4644                         goto out_disable_device;
4645                 }
4646
4647                 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4648                 if (!mega_baseport) {
4649                         printk(KERN_WARNING
4650                                "megaraid: could not map hba memory\n");
4651                         goto out_release_region;
4652                 }
4653         } else {
4654                 flag |= BOARD_IOMAP;
4655                 mega_baseport += 0x10;
4656
4657                 if (!request_region(mega_baseport, 16, "megaraid"))
4658                         goto out_disable_device;
4659         }
4660
4661         /* Initialize SCSI Host structure */
4662         host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4663         if (!host)
4664                 goto out_iounmap;
4665
4666         adapter = (adapter_t *)host->hostdata;
4667         memset(adapter, 0, sizeof(adapter_t));
4668
4669         printk(KERN_NOTICE
4670                 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4671                 host->host_no, mega_baseport, irq);
4672
4673         adapter->base = mega_baseport;
4674
4675         INIT_LIST_HEAD(&adapter->free_list);
4676         INIT_LIST_HEAD(&adapter->pending_list);
4677         INIT_LIST_HEAD(&adapter->completed_list);
4678
4679         adapter->flag = flag;
4680         spin_lock_init(&adapter->lock);
4681
4682         host->cmd_per_lun = max_cmd_per_lun;
4683         host->max_sectors = max_sectors_per_io;
4684
4685         adapter->dev = pdev;
4686         adapter->host = host;
4687
4688         adapter->host->irq = irq;
4689
4690         if (flag & BOARD_MEMMAP)
4691                 adapter->host->base = tbase;
4692         else {
4693                 adapter->host->io_port = tbase;
4694                 adapter->host->n_io_port = 16;
4695         }
4696
4697         adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4698
4699         /*
4700          * Allocate buffer to issue internal commands.
4701          */
4702         adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4703                 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4704         if (!adapter->mega_buffer) {
4705                 printk(KERN_WARNING "megaraid: out of RAM.\n");
4706                 goto out_host_put;
4707         }
4708
4709         adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4710         if (!adapter->scb_list) {
4711                 printk(KERN_WARNING "megaraid: out of RAM.\n");
4712                 goto out_free_cmd_buffer;
4713         }
4714
4715         if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4716                                 megaraid_isr_memmapped : megaraid_isr_iomapped,
4717                                         SA_SHIRQ, "megaraid", adapter)) {
4718                 printk(KERN_WARNING
4719                         "megaraid: Couldn't register IRQ %d!\n", irq);
4720                 goto out_free_scb_list;
4721         }
4722
4723         if (mega_setup_mailbox(adapter))
4724                 goto out_free_irq;
4725
4726         if (mega_query_adapter(adapter))
4727                 goto out_free_mbox;
4728
4729         /*
4730          * Have checks for some buggy f/w
4731          */
4732         if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4733                 /*
4734                  * Which firmware
4735                  */
4736                 if (!strcmp(adapter->fw_version, "3.00") ||
4737                                 !strcmp(adapter->fw_version, "3.01")) {
4738
4739                         printk( KERN_WARNING
4740                                 "megaraid: Your  card is a Dell PERC "
4741                                 "2/SC RAID controller with  "
4742                                 "firmware\nmegaraid: 3.00 or 3.01.  "
4743                                 "This driver is known to have "
4744                                 "corruption issues\nmegaraid: with "
4745                                 "those firmware versions on this "
4746                                 "specific card.  In order\nmegaraid: "
4747                                 "to protect your data, please upgrade "
4748                                 "your firmware to version\nmegaraid: "
4749                                 "3.10 or later, available from the "
4750                                 "Dell Technical Support web\n"
4751                                 "megaraid: site at\nhttp://support."
4752                                 "dell.com/us/en/filelib/download/"
4753                                 "index.asp?fileid=2940\n"
4754                         );
4755                 }
4756         }
4757
4758         /*
4759          * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4760          * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4761          * support, since this firmware cannot handle 64 bit
4762          * addressing
4763          */
4764         if ((subsysvid == HP_SUBSYS_VID) &&
4765             ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4766                 /*
4767                  * which firmware
4768                  */
4769                 if (!strcmp(adapter->fw_version, "H01.07") ||
4770                     !strcmp(adapter->fw_version, "H01.08") ||
4771                     !strcmp(adapter->fw_version, "H01.09") ) {
4772                         printk(KERN_WARNING
4773                                 "megaraid: Firmware H.01.07, "
4774                                 "H.01.08, and H.01.09 on 1M/2M "
4775                                 "controllers\n"
4776                                 "megaraid: do not support 64 bit "
4777                                 "addressing.\nmegaraid: DISABLING "
4778                                 "64 bit support.\n");
4779                         adapter->flag &= ~BOARD_64BIT;
4780                 }
4781         }
4782
4783         if (mega_is_bios_enabled(adapter))
4784                 mega_hbas[hba_count].is_bios_enabled = 1;
4785         mega_hbas[hba_count].hostdata_addr = adapter;
4786
4787         /*
4788          * Find out which channel is raid and which is scsi. This is
4789          * for ROMB support.
4790          */
4791         mega_enum_raid_scsi(adapter);
4792
4793         /*
4794          * Find out if a logical drive is set as the boot drive. If
4795          * there is one, will make that as the first logical drive.
4796          * ROMB: Do we have to boot from a physical drive. Then all
4797          * the physical drives would appear before the logical disks.
4798          * Else, all the physical drives would be exported to the mid
4799          * layer after logical drives.
4800          */
4801         mega_get_boot_drv(adapter);
4802
4803         if (adapter->boot_pdrv_enabled) {
4804                 j = adapter->product_info.nchannels;
4805                 for( i = 0; i < j; i++ )
4806                         adapter->logdrv_chan[i] = 0;
4807                 for( i = j; i < NVIRT_CHAN + j; i++ )
4808                         adapter->logdrv_chan[i] = 1;
4809         } else {
4810                 for (i = 0; i < NVIRT_CHAN; i++)
4811                         adapter->logdrv_chan[i] = 1;
4812                 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4813                         adapter->logdrv_chan[i] = 0;
4814                 adapter->mega_ch_class <<= NVIRT_CHAN;
4815         }
4816
4817         /*
4818          * Do we support random deletion and addition of logical
4819          * drives
4820          */
4821         adapter->read_ldidmap = 0;      /* set it after first logdrv
4822                                                    delete cmd */
4823         adapter->support_random_del = mega_support_random_del(adapter);
4824
4825         /* Initialize SCBs */
4826         if (mega_init_scb(adapter))
4827                 goto out_free_mbox;
4828
4829         /*
4830          * Reset the pending commands counter
4831          */
4832         atomic_set(&adapter->pend_cmds, 0);
4833
4834         /*
4835          * Reset the adapter quiescent flag
4836          */
4837         atomic_set(&adapter->quiescent, 0);
4838
4839         hba_soft_state[hba_count] = adapter;
4840
4841         /*
4842          * Fill in the structure which needs to be passed back to the
4843          * application when it does an ioctl() for controller related
4844          * information.
4845          */
4846         i = hba_count;
4847
4848         mcontroller[i].base = mega_baseport;
4849         mcontroller[i].irq = irq;
4850         mcontroller[i].numldrv = adapter->numldrv;
4851         mcontroller[i].pcibus = pci_bus;
4852         mcontroller[i].pcidev = id->device;
4853         mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4854         mcontroller[i].pciid = -1;
4855         mcontroller[i].pcivendor = id->vendor;
4856         mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4857         mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4858
4859
4860         /* Set the Mode of addressing to 64 bit if we can */
4861         if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4862                 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4863                 adapter->has_64bit_addr = 1;
4864         } else  {
4865                 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4866                 adapter->has_64bit_addr = 0;
4867         }
4868
4869         mutex_init(&adapter->int_mtx);
4870         init_completion(&adapter->int_waitq);
4871
4872         adapter->this_id = DEFAULT_INITIATOR_ID;
4873         adapter->host->this_id = DEFAULT_INITIATOR_ID;
4874
4875 #if MEGA_HAVE_CLUSTERING
4876         /*
4877          * Is cluster support enabled on this controller
4878          * Note: In a cluster the HBAs ( the initiators ) will have
4879          * different target IDs and we cannot assume it to be 7. Call
4880          * to mega_support_cluster() will get the target ids also if
4881          * the cluster support is available
4882          */
4883         adapter->has_cluster = mega_support_cluster(adapter);
4884         if (adapter->has_cluster) {
4885                 printk(KERN_NOTICE
4886                         "megaraid: Cluster driver, initiator id:%d\n",
4887                         adapter->this_id);
4888         }
4889 #endif
4890
4891         pci_set_drvdata(pdev, host);
4892
4893         mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4894
4895         error = scsi_add_host(host, &pdev->dev);
4896         if (error)
4897                 goto out_free_mbox;
4898
4899         scsi_scan_host(host);
4900         hba_count++;
4901         return 0;
4902
4903  out_free_mbox:
4904         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4905                         adapter->una_mbox64, adapter->una_mbox64_dma);
4906  out_free_irq:
4907         free_irq(adapter->host->irq, adapter);
4908  out_free_scb_list:
4909         kfree(adapter->scb_list);
4910  out_free_cmd_buffer:
4911         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4912                         adapter->mega_buffer, adapter->buf_dma_handle);
4913  out_host_put:
4914         scsi_host_put(host);
4915  out_iounmap:
4916         if (flag & BOARD_MEMMAP)
4917                 iounmap((void *)mega_baseport);
4918  out_release_region:
4919         if (flag & BOARD_MEMMAP)
4920                 release_mem_region(tbase, 128);
4921         else
4922                 release_region(mega_baseport, 16);
4923  out_disable_device:
4924         pci_disable_device(pdev);
4925  out:
4926         return error;
4927 }
4928
4929 static void
4930 __megaraid_shutdown(adapter_t *adapter)
4931 {
4932         u_char  raw_mbox[sizeof(struct mbox_out)];
4933         mbox_t  *mbox = (mbox_t *)raw_mbox;
4934         int     i;
4935
4936         /* Flush adapter cache */
4937         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4938         raw_mbox[0] = FLUSH_ADAPTER;
4939
4940         free_irq(adapter->host->irq, adapter);
4941
4942         /* Issue a blocking (interrupts disabled) command to the card */
4943         issue_scb_block(adapter, raw_mbox);
4944
4945         /* Flush disks cache */
4946         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4947         raw_mbox[0] = FLUSH_SYSTEM;
4948
4949         /* Issue a blocking (interrupts disabled) command to the card */
4950         issue_scb_block(adapter, raw_mbox);
4951
4952         if (atomic_read(&adapter->pend_cmds) > 0)
4953                 printk(KERN_WARNING "megaraid: pending commands!!\n");
4954
4955         /*
4956          * Have a delibrate delay to make sure all the caches are
4957          * actually flushed.
4958          */
4959         for (i = 0; i <= 10; i++)
4960                 mdelay(1000);
4961 }
4962
4963 static void
4964 megaraid_remove_one(struct pci_dev *pdev)
4965 {
4966         struct Scsi_Host *host = pci_get_drvdata(pdev);
4967         adapter_t *adapter = (adapter_t *)host->hostdata;
4968         char    buf[12] = { 0 };
4969
4970         scsi_remove_host(host);
4971
4972         __megaraid_shutdown(adapter);
4973
4974         /* Free our resources */
4975         if (adapter->flag & BOARD_MEMMAP) {
4976                 iounmap((void *)adapter->base);
4977                 release_mem_region(adapter->host->base, 128);
4978         } else
4979                 release_region(adapter->base, 16);
4980
4981         mega_free_sgl(adapter);
4982
4983 #ifdef CONFIG_PROC_FS
4984         if (adapter->controller_proc_dir_entry) {
4985                 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4986                 remove_proc_entry("config",
4987                                 adapter->controller_proc_dir_entry);
4988                 remove_proc_entry("mailbox",
4989                                 adapter->controller_proc_dir_entry);
4990 #if MEGA_HAVE_ENH_PROC
4991                 remove_proc_entry("rebuild-rate",
4992                                 adapter->controller_proc_dir_entry);
4993                 remove_proc_entry("battery-status",
4994                                 adapter->controller_proc_dir_entry);
4995
4996                 remove_proc_entry("diskdrives-ch0",
4997                                 adapter->controller_proc_dir_entry);
4998                 remove_proc_entry("diskdrives-ch1",
4999                                 adapter->controller_proc_dir_entry);
5000                 remove_proc_entry("diskdrives-ch2",
5001                                 adapter->controller_proc_dir_entry);
5002                 remove_proc_entry("diskdrives-ch3",
5003                                 adapter->controller_proc_dir_entry);
5004
5005                 remove_proc_entry("raiddrives-0-9",
5006                                 adapter->controller_proc_dir_entry);
5007                 remove_proc_entry("raiddrives-10-19",
5008                                 adapter->controller_proc_dir_entry);
5009                 remove_proc_entry("raiddrives-20-29",
5010                                 adapter->controller_proc_dir_entry);
5011                 remove_proc_entry("raiddrives-30-39",
5012                                 adapter->controller_proc_dir_entry);
5013 #endif
5014                 sprintf(buf, "hba%d", adapter->host->host_no);
5015                 remove_proc_entry(buf, mega_proc_dir_entry);
5016         }
5017 #endif
5018
5019         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5020                         adapter->mega_buffer, adapter->buf_dma_handle);
5021         kfree(adapter->scb_list);
5022         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5023                         adapter->una_mbox64, adapter->una_mbox64_dma);
5024
5025         scsi_host_put(host);
5026         pci_disable_device(pdev);
5027
5028         hba_count--;
5029 }
5030
5031 static void
5032 megaraid_shutdown(struct pci_dev *pdev)
5033 {
5034         struct Scsi_Host *host = pci_get_drvdata(pdev);
5035         adapter_t *adapter = (adapter_t *)host->hostdata;
5036
5037         __megaraid_shutdown(adapter);
5038 }
5039
5040 static struct pci_device_id megaraid_pci_tbl[] = {
5041         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5042                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5043         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5044                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5045         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5046                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5047         {0,}
5048 };
5049 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5050
5051 static struct pci_driver megaraid_pci_driver = {
5052         .name           = "megaraid_legacy",
5053         .id_table       = megaraid_pci_tbl,
5054         .probe          = megaraid_probe_one,
5055         .remove         = __devexit_p(megaraid_remove_one),
5056         .shutdown       = megaraid_shutdown,
5057 };
5058
5059 static int __init megaraid_init(void)
5060 {
5061         int error;
5062
5063         if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5064                 max_cmd_per_lun = MAX_CMD_PER_LUN;
5065         if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5066                 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5067
5068 #ifdef CONFIG_PROC_FS
5069         mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5070         if (!mega_proc_dir_entry) {
5071                 printk(KERN_WARNING
5072                                 "megaraid: failed to create megaraid root\n");
5073         }
5074 #endif
5075         error = pci_module_init(&megaraid_pci_driver);
5076         if (error) {
5077 #ifdef CONFIG_PROC_FS
5078                 remove_proc_entry("megaraid", &proc_root);
5079 #endif
5080                 return error;
5081         }
5082
5083         /*
5084          * Register the driver as a character device, for applications
5085          * to access it for ioctls.
5086          * First argument (major) to register_chrdev implies a dynamic
5087          * major number allocation.
5088          */
5089         major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5090         if (!major) {
5091                 printk(KERN_WARNING
5092                                 "megaraid: failed to register char device\n");
5093         }
5094
5095         return 0;
5096 }
5097
5098 static void __exit megaraid_exit(void)
5099 {
5100         /*
5101          * Unregister the character device interface to the driver.
5102          */
5103         unregister_chrdev(major, "megadev_legacy");
5104
5105         pci_unregister_driver(&megaraid_pci_driver);
5106
5107 #ifdef CONFIG_PROC_FS
5108         remove_proc_entry("megaraid", &proc_root);
5109 #endif
5110 }
5111
5112 module_init(megaraid_init);
5113 module_exit(megaraid_exit);
5114
5115 /* vi: set ts=8 sw=8 tw=78: */