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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->request_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  *
1260  * Interrupt service routine for io-mapped controllers.
1261  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1262  * and service the completed commands.
1263  */
1264 static irqreturn_t
1265 megaraid_isr_iomapped(int irq, void *devp)
1266 {
1267         adapter_t       *adapter = devp;
1268         unsigned long   flags;
1269         u8      status;
1270         u8      nstatus;
1271         u8      completed[MAX_FIRMWARE_STATUS];
1272         u8      byte;
1273         int     handled = 0;
1274
1275
1276         /*
1277          * loop till F/W has more commands for us to complete.
1278          */
1279         spin_lock_irqsave(&adapter->lock, flags);
1280
1281         do {
1282                 /* Check if a valid interrupt is pending */
1283                 byte = irq_state(adapter);
1284                 if( (byte & VALID_INTR_BYTE) == 0 ) {
1285                         /*
1286                          * No more pending commands
1287                          */
1288                         goto out_unlock;
1289                 }
1290                 set_irq_state(adapter, byte);
1291
1292                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1293                                 == 0xFF)
1294                         cpu_relax();
1295                 adapter->mbox->m_in.numstatus = 0xFF;
1296
1297                 status = adapter->mbox->m_in.status;
1298
1299                 /*
1300                  * decrement the pending queue counter
1301                  */
1302                 atomic_sub(nstatus, &adapter->pend_cmds);
1303
1304                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1305                                 nstatus);
1306
1307                 /* Acknowledge interrupt */
1308                 irq_ack(adapter);
1309
1310                 mega_cmd_done(adapter, completed, nstatus, status);
1311
1312                 mega_rundoneq(adapter);
1313
1314                 handled = 1;
1315
1316                 /* Loop through any pending requests */
1317                 if(atomic_read(&adapter->quiescent) == 0) {
1318                         mega_runpendq(adapter);
1319                 }
1320
1321         } while(1);
1322
1323  out_unlock:
1324
1325         spin_unlock_irqrestore(&adapter->lock, flags);
1326
1327         return IRQ_RETVAL(handled);
1328 }
1329
1330
1331 /**
1332  * megaraid_isr_memmapped()
1333  * @irq - irq
1334  * @devp - pointer to our soft state
1335  *
1336  * Interrupt service routine for memory-mapped controllers.
1337  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1338  * and service the completed commands.
1339  */
1340 static irqreturn_t
1341 megaraid_isr_memmapped(int irq, void *devp)
1342 {
1343         adapter_t       *adapter = devp;
1344         unsigned long   flags;
1345         u8      status;
1346         u32     dword = 0;
1347         u8      nstatus;
1348         u8      completed[MAX_FIRMWARE_STATUS];
1349         int     handled = 0;
1350
1351
1352         /*
1353          * loop till F/W has more commands for us to complete.
1354          */
1355         spin_lock_irqsave(&adapter->lock, flags);
1356
1357         do {
1358                 /* Check if a valid interrupt is pending */
1359                 dword = RDOUTDOOR(adapter);
1360                 if(dword != 0x10001234) {
1361                         /*
1362                          * No more pending commands
1363                          */
1364                         goto out_unlock;
1365                 }
1366                 WROUTDOOR(adapter, 0x10001234);
1367
1368                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1369                                 == 0xFF) {
1370                         cpu_relax();
1371                 }
1372                 adapter->mbox->m_in.numstatus = 0xFF;
1373
1374                 status = adapter->mbox->m_in.status;
1375
1376                 /*
1377                  * decrement the pending queue counter
1378                  */
1379                 atomic_sub(nstatus, &adapter->pend_cmds);
1380
1381                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1382                                 nstatus);
1383
1384                 /* Acknowledge interrupt */
1385                 WRINDOOR(adapter, 0x2);
1386
1387                 handled = 1;
1388
1389                 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1390
1391                 mega_cmd_done(adapter, completed, nstatus, status);
1392
1393                 mega_rundoneq(adapter);
1394
1395                 /* Loop through any pending requests */
1396                 if(atomic_read(&adapter->quiescent) == 0) {
1397                         mega_runpendq(adapter);
1398                 }
1399
1400         } while(1);
1401
1402  out_unlock:
1403
1404         spin_unlock_irqrestore(&adapter->lock, flags);
1405
1406         return IRQ_RETVAL(handled);
1407 }
1408 /**
1409  * mega_cmd_done()
1410  * @adapter - pointer to our soft state
1411  * @completed - array of ids of completed commands
1412  * @nstatus - number of completed commands
1413  * @status - status of the last command completed
1414  *
1415  * Complete the comamnds and call the scsi mid-layer callback hooks.
1416  */
1417 static void
1418 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1419 {
1420         mega_ext_passthru       *epthru = NULL;
1421         struct scatterlist      *sgl;
1422         Scsi_Cmnd       *cmd = NULL;
1423         mega_passthru   *pthru = NULL;
1424         mbox_t  *mbox = NULL;
1425         u8      c;
1426         scb_t   *scb;
1427         int     islogical;
1428         int     cmdid;
1429         int     i;
1430
1431         /*
1432          * for all the commands completed, call the mid-layer callback routine
1433          * and free the scb.
1434          */
1435         for( i = 0; i < nstatus; i++ ) {
1436
1437                 cmdid = completed[i];
1438
1439                 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1440                         scb = &adapter->int_scb;
1441                         cmd = scb->cmd;
1442                         mbox = (mbox_t *)scb->raw_mbox;
1443
1444                         /*
1445                          * Internal command interface do not fire the extended
1446                          * passthru or 64-bit passthru
1447                          */
1448                         pthru = scb->pthru;
1449
1450                 }
1451                 else {
1452                         scb = &adapter->scb_list[cmdid];
1453
1454                         /*
1455                          * Make sure f/w has completed a valid command
1456                          */
1457                         if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1458                                 printk(KERN_CRIT
1459                                         "megaraid: invalid command ");
1460                                 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1461                                         cmdid, scb->state, scb->cmd);
1462
1463                                 continue;
1464                         }
1465
1466                         /*
1467                          * Was a abort issued for this command
1468                          */
1469                         if( scb->state & SCB_ABORT ) {
1470
1471                                 printk(KERN_WARNING
1472                                 "megaraid: aborted cmd %lx[%x] complete.\n",
1473                                         scb->cmd->serial_number, scb->idx);
1474
1475                                 scb->cmd->result = (DID_ABORT << 16);
1476
1477                                 list_add_tail(SCSI_LIST(scb->cmd),
1478                                                 &adapter->completed_list);
1479
1480                                 mega_free_scb(adapter, scb);
1481
1482                                 continue;
1483                         }
1484
1485                         /*
1486                          * Was a reset issued for this command
1487                          */
1488                         if( scb->state & SCB_RESET ) {
1489
1490                                 printk(KERN_WARNING
1491                                 "megaraid: reset cmd %lx[%x] complete.\n",
1492                                         scb->cmd->serial_number, scb->idx);
1493
1494                                 scb->cmd->result = (DID_RESET << 16);
1495
1496                                 list_add_tail(SCSI_LIST(scb->cmd),
1497                                                 &adapter->completed_list);
1498
1499                                 mega_free_scb (adapter, scb);
1500
1501                                 continue;
1502                         }
1503
1504                         cmd = scb->cmd;
1505                         pthru = scb->pthru;
1506                         epthru = scb->epthru;
1507                         mbox = (mbox_t *)scb->raw_mbox;
1508
1509 #if MEGA_HAVE_STATS
1510                         {
1511
1512                         int     logdrv = mbox->m_out.logdrv;
1513
1514                         islogical = adapter->logdrv_chan[cmd->channel];
1515                         /*
1516                          * Maintain an error counter for the logical drive.
1517                          * Some application like SNMP agent need such
1518                          * statistics
1519                          */
1520                         if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521                                                 cmd->cmnd[0] == READ_10 ||
1522                                                 cmd->cmnd[0] == READ_12)) {
1523                                 /*
1524                                  * Logical drive number increases by 0x80 when
1525                                  * a logical drive is deleted
1526                                  */
1527                                 adapter->rd_errors[logdrv%0x80]++;
1528                         }
1529
1530                         if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531                                                 cmd->cmnd[0] == WRITE_10 ||
1532                                                 cmd->cmnd[0] == WRITE_12)) {
1533                                 /*
1534                                  * Logical drive number increases by 0x80 when
1535                                  * a logical drive is deleted
1536                                  */
1537                                 adapter->wr_errors[logdrv%0x80]++;
1538                         }
1539
1540                         }
1541 #endif
1542                 }
1543
1544                 /*
1545                  * Do not return the presence of hard disk on the channel so,
1546                  * inquiry sent, and returned data==hard disk or removable
1547                  * hard disk and not logical, request should return failure! -
1548                  * PJ
1549                  */
1550                 islogical = adapter->logdrv_chan[cmd->device->channel];
1551                 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553                         if( cmd->use_sg ) {
1554                                 sgl = (struct scatterlist *)
1555                                         cmd->request_buffer;
1556
1557                                 if( sgl->page ) {
1558                                         c = *(unsigned char *)
1559                                         page_address((&sgl[0])->page) +
1560                                         (&sgl[0])->offset;
1561                                 }
1562                                 else {
1563                                         printk(KERN_WARNING
1564                                                 "megaraid: invalid sg.\n");
1565                                         c = 0;
1566                                 }
1567                         }
1568                         else {
1569                                 c = *(u8 *)cmd->request_buffer;
1570                         }
1571
1572                         if(IS_RAID_CH(adapter, cmd->device->channel) &&
1573                                         ((c & 0x1F ) == TYPE_DISK)) {
1574                                 status = 0xF0;
1575                         }
1576                 }
1577
1578                 /* clear result; otherwise, success returns corrupt value */
1579                 cmd->result = 0;
1580
1581                 /* Convert MegaRAID status to Linux error code */
1582                 switch (status) {
1583                 case 0x00:      /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1584                         cmd->result |= (DID_OK << 16);
1585                         break;
1586
1587                 case 0x02:      /* ERROR_ABORTED, i.e.
1588                                    SCSI_STATUS_CHECK_CONDITION */
1589
1590                         /* set sense_buffer and result fields */
1591                         if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1592                                 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1593
1594                                 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1595                                                 14);
1596
1597                                 cmd->result = (DRIVER_SENSE << 24) |
1598                                         (DID_OK << 16) |
1599                                         (CHECK_CONDITION << 1);
1600                         }
1601                         else {
1602                                 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1603
1604                                         memcpy(cmd->sense_buffer,
1605                                                 epthru->reqsensearea, 14);
1606
1607                                         cmd->result = (DRIVER_SENSE << 24) |
1608                                                 (DID_OK << 16) |
1609                                                 (CHECK_CONDITION << 1);
1610                                 } else {
1611                                         cmd->sense_buffer[0] = 0x70;
1612                                         cmd->sense_buffer[2] = ABORTED_COMMAND;
1613                                         cmd->result |= (CHECK_CONDITION << 1);
1614                                 }
1615                         }
1616                         break;
1617
1618                 case 0x08:      /* ERR_DEST_DRIVE_FAILED, i.e.
1619                                    SCSI_STATUS_BUSY */
1620                         cmd->result |= (DID_BUS_BUSY << 16) | status;
1621                         break;
1622
1623                 default:
1624 #if MEGA_HAVE_CLUSTERING
1625                         /*
1626                          * If TEST_UNIT_READY fails, we know
1627                          * MEGA_RESERVATION_STATUS failed
1628                          */
1629                         if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1630                                 cmd->result |= (DID_ERROR << 16) |
1631                                         (RESERVATION_CONFLICT << 1);
1632                         }
1633                         else
1634                         /*
1635                          * Error code returned is 1 if Reserve or Release
1636                          * failed or the input parameter is invalid
1637                          */
1638                         if( status == 1 &&
1639                                 (cmd->cmnd[0] == RESERVE ||
1640                                          cmd->cmnd[0] == RELEASE) ) {
1641
1642                                 cmd->result |= (DID_ERROR << 16) |
1643                                         (RESERVATION_CONFLICT << 1);
1644                         }
1645                         else
1646 #endif
1647                                 cmd->result |= (DID_BAD_TARGET << 16)|status;
1648                 }
1649
1650                 /*
1651                  * Only free SCBs for the commands coming down from the
1652                  * mid-layer, not for which were issued internally
1653                  *
1654                  * For internal command, restore the status returned by the
1655                  * firmware so that user can interpret it.
1656                  */
1657                 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1658                         cmd->result = status;
1659
1660                         /*
1661                          * Remove the internal command from the pending list
1662                          */
1663                         list_del_init(&scb->list);
1664                         scb->state = SCB_FREE;
1665                 }
1666                 else {
1667                         mega_free_scb(adapter, scb);
1668                 }
1669
1670                 /* Add Scsi_Command to end of completed queue */
1671                 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1672         }
1673 }
1674
1675
1676 /*
1677  * mega_runpendq()
1678  *
1679  * Run through the list of completed requests and finish it
1680  */
1681 static void
1682 mega_rundoneq (adapter_t *adapter)
1683 {
1684         Scsi_Cmnd *cmd;
1685         struct list_head *pos;
1686
1687         list_for_each(pos, &adapter->completed_list) {
1688
1689                 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1690
1691                 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1692                 cmd->scsi_done(cmd);
1693         }
1694
1695         INIT_LIST_HEAD(&adapter->completed_list);
1696 }
1697
1698
1699 /*
1700  * Free a SCB structure
1701  * Note: We assume the scsi commands associated with this scb is not free yet.
1702  */
1703 static void
1704 mega_free_scb(adapter_t *adapter, scb_t *scb)
1705 {
1706         unsigned long length;
1707
1708         switch( scb->dma_type ) {
1709
1710         case MEGA_DMA_TYPE_NONE:
1711                 break;
1712
1713         case MEGA_BULK_DATA:
1714                 if (scb->cmd->use_sg == 0)
1715                         length = scb->cmd->request_bufflen;
1716                 else {
1717                         struct scatterlist *sgl =
1718                                 (struct scatterlist *)scb->cmd->request_buffer;
1719                         length = sgl->length;
1720                 }
1721                 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1722                                length, scb->dma_direction);
1723                 break;
1724
1725         case MEGA_SGLIST:
1726                 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1727                         scb->cmd->use_sg, scb->dma_direction);
1728                 break;
1729
1730         default:
1731                 break;
1732         }
1733
1734         /*
1735          * Remove from the pending list
1736          */
1737         list_del_init(&scb->list);
1738
1739         /* Link the scb back into free list */
1740         scb->state = SCB_FREE;
1741         scb->cmd = NULL;
1742
1743         list_add(&scb->list, &adapter->free_list);
1744 }
1745
1746
1747 static int
1748 __mega_busywait_mbox (adapter_t *adapter)
1749 {
1750         volatile mbox_t *mbox = adapter->mbox;
1751         long counter;
1752
1753         for (counter = 0; counter < 10000; counter++) {
1754                 if (!mbox->m_in.busy)
1755                         return 0;
1756                 udelay(100); yield();
1757         }
1758         return -1;              /* give up after 1 second */
1759 }
1760
1761 /*
1762  * Copies data to SGLIST
1763  * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1764  */
1765 static int
1766 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1767 {
1768         struct scatterlist      *sgl;
1769         struct page     *page;
1770         unsigned long   offset;
1771         unsigned int    length;
1772         Scsi_Cmnd       *cmd;
1773         int     sgcnt;
1774         int     idx;
1775
1776         cmd = scb->cmd;
1777
1778         /* Scatter-gather not used */
1779         if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1780                                  !adapter->has_64bit_addr)) {
1781
1782                 if (cmd->use_sg == 0) {
1783                         page = virt_to_page(cmd->request_buffer);
1784                         offset = offset_in_page(cmd->request_buffer);
1785                         length = cmd->request_bufflen;
1786                 } else {
1787                         sgl = (struct scatterlist *)cmd->request_buffer;
1788                         page = sgl->page;
1789                         offset = sgl->offset;
1790                         length = sgl->length;
1791                 }
1792
1793                 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1794                                                   page, offset,
1795                                                   length,
1796                                                   scb->dma_direction);
1797                 scb->dma_type = MEGA_BULK_DATA;
1798
1799                 /*
1800                  * We need to handle special 64-bit commands that need a
1801                  * minimum of 1 SG
1802                  */
1803                 if( adapter->has_64bit_addr ) {
1804                         scb->sgl64[0].address = scb->dma_h_bulkdata;
1805                         scb->sgl64[0].length = length;
1806                         *buf = (u32)scb->sgl_dma_addr;
1807                         *len = (u32)length;
1808                         return 1;
1809                 }
1810                 else {
1811                         *buf = (u32)scb->dma_h_bulkdata;
1812                         *len = (u32)length;
1813                 }
1814                 return 0;
1815         }
1816
1817         sgl = (struct scatterlist *)cmd->request_buffer;
1818
1819         /*
1820          * Copy Scatter-Gather list info into controller structure.
1821          *
1822          * The number of sg elements returned must not exceed our limit
1823          */
1824         sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1825                         scb->dma_direction);
1826
1827         scb->dma_type = MEGA_SGLIST;
1828
1829         BUG_ON(sgcnt > adapter->sglen);
1830
1831         *len = 0;
1832
1833         for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1834
1835                 if( adapter->has_64bit_addr ) {
1836                         scb->sgl64[idx].address = sg_dma_address(sgl);
1837                         *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1838                 }
1839                 else {
1840                         scb->sgl[idx].address = sg_dma_address(sgl);
1841                         *len += scb->sgl[idx].length = sg_dma_len(sgl);
1842                 }
1843         }
1844
1845         /* Reset pointer and length fields */
1846         *buf = scb->sgl_dma_addr;
1847
1848         /* Return count of SG requests */
1849         return sgcnt;
1850 }
1851
1852
1853 /*
1854  * mega_8_to_40ld()
1855  *
1856  * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1857  * Enquiry3 structures for later use
1858  */
1859 static void
1860 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1861                 mega_product_info *product_info)
1862 {
1863         int i;
1864
1865         product_info->max_commands = inquiry->adapter_info.max_commands;
1866         enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1867         product_info->nchannels = inquiry->adapter_info.nchannels;
1868
1869         for (i = 0; i < 4; i++) {
1870                 product_info->fw_version[i] =
1871                         inquiry->adapter_info.fw_version[i];
1872
1873                 product_info->bios_version[i] =
1874                         inquiry->adapter_info.bios_version[i];
1875         }
1876         enquiry3->cache_flush_interval =
1877                 inquiry->adapter_info.cache_flush_interval;
1878
1879         product_info->dram_size = inquiry->adapter_info.dram_size;
1880
1881         enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1882
1883         for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1884                 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1885                 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1886                 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1887         }
1888
1889         for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1890                 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1891 }
1892
1893 static inline void
1894 mega_free_sgl(adapter_t *adapter)
1895 {
1896         scb_t   *scb;
1897         int     i;
1898
1899         for(i = 0; i < adapter->max_cmds; i++) {
1900
1901                 scb = &adapter->scb_list[i];
1902
1903                 if( scb->sgl64 ) {
1904                         pci_free_consistent(adapter->dev,
1905                                 sizeof(mega_sgl64) * adapter->sglen,
1906                                 scb->sgl64,
1907                                 scb->sgl_dma_addr);
1908
1909                         scb->sgl64 = NULL;
1910                 }
1911
1912                 if( scb->pthru ) {
1913                         pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1914                                 scb->pthru, scb->pthru_dma_addr);
1915
1916                         scb->pthru = NULL;
1917                 }
1918
1919                 if( scb->epthru ) {
1920                         pci_free_consistent(adapter->dev,
1921                                 sizeof(mega_ext_passthru),
1922                                 scb->epthru, scb->epthru_dma_addr);
1923
1924                         scb->epthru = NULL;
1925                 }
1926
1927         }
1928 }
1929
1930
1931 /*
1932  * Get information about the card/driver
1933  */
1934 const char *
1935 megaraid_info(struct Scsi_Host *host)
1936 {
1937         static char buffer[512];
1938         adapter_t *adapter;
1939
1940         adapter = (adapter_t *)host->hostdata;
1941
1942         sprintf (buffer,
1943                  "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1944                  adapter->fw_version, adapter->product_info.max_commands,
1945                  adapter->host->max_id, adapter->host->max_channel,
1946                  adapter->host->max_lun);
1947         return buffer;
1948 }
1949
1950 /*
1951  * Abort a previous SCSI request. Only commands on the pending list can be
1952  * aborted. All the commands issued to the F/W must complete.
1953  */
1954 static int
1955 megaraid_abort(Scsi_Cmnd *cmd)
1956 {
1957         adapter_t       *adapter;
1958         int             rval;
1959
1960         adapter = (adapter_t *)cmd->device->host->hostdata;
1961
1962         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1963
1964         /*
1965          * This is required here to complete any completed requests
1966          * to be communicated over to the mid layer.
1967          */
1968         mega_rundoneq(adapter);
1969
1970         return rval;
1971 }
1972
1973
1974 static int
1975 megaraid_reset(struct scsi_cmnd *cmd)
1976 {
1977         adapter_t       *adapter;
1978         megacmd_t       mc;
1979         int             rval;
1980
1981         adapter = (adapter_t *)cmd->device->host->hostdata;
1982
1983 #if MEGA_HAVE_CLUSTERING
1984         mc.cmd = MEGA_CLUSTER_CMD;
1985         mc.opcode = MEGA_RESET_RESERVATIONS;
1986
1987         if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1988                 printk(KERN_WARNING
1989                                 "megaraid: reservation reset failed.\n");
1990         }
1991         else {
1992                 printk(KERN_INFO "megaraid: reservation reset.\n");
1993         }
1994 #endif
1995
1996         spin_lock_irq(&adapter->lock);
1997
1998         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1999
2000         /*
2001          * This is required here to complete any completed requests
2002          * to be communicated over to the mid layer.
2003          */
2004         mega_rundoneq(adapter);
2005         spin_unlock_irq(&adapter->lock);
2006
2007         return rval;
2008 }
2009
2010 /**
2011  * megaraid_abort_and_reset()
2012  * @adapter - megaraid soft state
2013  * @cmd - scsi command to be aborted or reset
2014  * @aor - abort or reset flag
2015  *
2016  * Try to locate the scsi command in the pending queue. If found and is not
2017  * issued to the controller, abort/reset it. Otherwise return failure
2018  */
2019 static int
2020 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2021 {
2022         struct list_head        *pos, *next;
2023         scb_t                   *scb;
2024
2025         printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2026              (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2027              cmd->cmnd[0], cmd->device->channel,
2028              cmd->device->id, cmd->device->lun);
2029
2030         if(list_empty(&adapter->pending_list))
2031                 return FALSE;
2032
2033         list_for_each_safe(pos, next, &adapter->pending_list) {
2034
2035                 scb = list_entry(pos, scb_t, list);
2036
2037                 if (scb->cmd == cmd) { /* Found command */
2038
2039                         scb->state |= aor;
2040
2041                         /*
2042                          * Check if this command has firmare owenership. If
2043                          * yes, we cannot reset this command. Whenever, f/w
2044                          * completes this command, we will return appropriate
2045                          * status from ISR.
2046                          */
2047                         if( scb->state & SCB_ISSUED ) {
2048
2049                                 printk(KERN_WARNING
2050                                         "megaraid: %s-%lx[%x], fw owner.\n",
2051                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
2052                                         cmd->serial_number, scb->idx);
2053
2054                                 return FALSE;
2055                         }
2056                         else {
2057
2058                                 /*
2059                                  * Not yet issued! Remove from the pending
2060                                  * list
2061                                  */
2062                                 printk(KERN_WARNING
2063                                         "megaraid: %s-%lx[%x], driver owner.\n",
2064                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
2065                                         cmd->serial_number, scb->idx);
2066
2067                                 mega_free_scb(adapter, scb);
2068
2069                                 if( aor == SCB_ABORT ) {
2070                                         cmd->result = (DID_ABORT << 16);
2071                                 }
2072                                 else {
2073                                         cmd->result = (DID_RESET << 16);
2074                                 }
2075
2076                                 list_add_tail(SCSI_LIST(cmd),
2077                                                 &adapter->completed_list);
2078
2079                                 return TRUE;
2080                         }
2081                 }
2082         }
2083
2084         return FALSE;
2085 }
2086
2087 static inline int
2088 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2089 {
2090         *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2091
2092         if( *pdev == NULL ) return -1;
2093
2094         memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2095
2096         if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2097                 kfree(*pdev);
2098                 return -1;
2099         }
2100
2101         return 0;
2102 }
2103
2104 static inline void
2105 free_local_pdev(struct pci_dev *pdev)
2106 {
2107         kfree(pdev);
2108 }
2109
2110 /**
2111  * mega_allocate_inquiry()
2112  * @dma_handle - handle returned for dma address
2113  * @pdev - handle to pci device
2114  *
2115  * allocates memory for inquiry structure
2116  */
2117 static inline void *
2118 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2119 {
2120         return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2121 }
2122
2123
2124 static inline void
2125 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2126 {
2127         pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2128 }
2129
2130
2131 #ifdef CONFIG_PROC_FS
2132 /* Following code handles /proc fs  */
2133
2134 #define CREATE_READ_PROC(string, func)  create_proc_read_entry(string,  \
2135                                         S_IRUSR | S_IFREG,              \
2136                                         controller_proc_dir_entry,      \
2137                                         func, adapter)
2138
2139 /**
2140  * mega_create_proc_entry()
2141  * @index - index in soft state array
2142  * @parent - parent node for this /proc entry
2143  *
2144  * Creates /proc entries for our controllers.
2145  */
2146 static void
2147 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2148 {
2149         struct proc_dir_entry   *controller_proc_dir_entry = NULL;
2150         u8              string[64] = { 0 };
2151         adapter_t       *adapter = hba_soft_state[index];
2152
2153         sprintf(string, "hba%d", adapter->host->host_no);
2154
2155         controller_proc_dir_entry =
2156                 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2157
2158         if(!controller_proc_dir_entry) {
2159                 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2160                 return;
2161         }
2162         adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2163         adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2164         adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2165 #if MEGA_HAVE_ENH_PROC
2166         adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2167         adapter->proc_battery = CREATE_READ_PROC("battery-status",
2168                         proc_battery);
2169
2170         /*
2171          * Display each physical drive on its channel
2172          */
2173         adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2174                                         proc_pdrv_ch0);
2175         adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2176                                         proc_pdrv_ch1);
2177         adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2178                                         proc_pdrv_ch2);
2179         adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2180                                         proc_pdrv_ch3);
2181
2182         /*
2183          * Display a set of up to 10 logical drive through each of following
2184          * /proc entries
2185          */
2186         adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2187                                         proc_rdrv_10);
2188         adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2189                                         proc_rdrv_20);
2190         adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2191                                         proc_rdrv_30);
2192         adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2193                                         proc_rdrv_40);
2194 #endif
2195 }
2196
2197
2198 /**
2199  * proc_read_config()
2200  * @page - buffer to write the data in
2201  * @start - where the actual data has been written in page
2202  * @offset - same meaning as the read system call
2203  * @count - same meaning as the read system call
2204  * @eof - set if no more data needs to be returned
2205  * @data - pointer to our soft state
2206  *
2207  * Display configuration information about the controller.
2208  */
2209 static int
2210 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2211                 void *data)
2212 {
2213
2214         adapter_t *adapter = (adapter_t *)data;
2215         int len = 0;
2216
2217         len += sprintf(page+len, "%s", MEGARAID_VERSION);
2218
2219         if(adapter->product_info.product_name[0])
2220                 len += sprintf(page+len, "%s\n",
2221                                 adapter->product_info.product_name);
2222
2223         len += sprintf(page+len, "Controller Type: ");
2224
2225         if( adapter->flag & BOARD_MEMMAP ) {
2226                 len += sprintf(page+len,
2227                         "438/466/467/471/493/518/520/531/532\n");
2228         }
2229         else {
2230                 len += sprintf(page+len,
2231                         "418/428/434\n");
2232         }
2233
2234         if(adapter->flag & BOARD_40LD) {
2235                 len += sprintf(page+len,
2236                                 "Controller Supports 40 Logical Drives\n");
2237         }
2238
2239         if(adapter->flag & BOARD_64BIT) {
2240                 len += sprintf(page+len,
2241                 "Controller capable of 64-bit memory addressing\n");
2242         }
2243         if( adapter->has_64bit_addr ) {
2244                 len += sprintf(page+len,
2245                         "Controller using 64-bit memory addressing\n");
2246         }
2247         else {
2248                 len += sprintf(page+len,
2249                         "Controller is not using 64-bit memory addressing\n");
2250         }
2251
2252         len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2253                         adapter->host->irq);
2254
2255         len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2256                         adapter->numldrv, adapter->product_info.nchannels);
2257
2258         len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2259                         adapter->fw_version, adapter->bios_version,
2260                         adapter->product_info.dram_size);
2261
2262         len += sprintf(page+len,
2263                 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2264                 adapter->product_info.max_commands, adapter->max_cmds);
2265
2266         len += sprintf(page+len, "support_ext_cdb    = %d\n",
2267                         adapter->support_ext_cdb);
2268         len += sprintf(page+len, "support_random_del = %d\n",
2269                         adapter->support_random_del);
2270         len += sprintf(page+len, "boot_ldrv_enabled  = %d\n",
2271                         adapter->boot_ldrv_enabled);
2272         len += sprintf(page+len, "boot_ldrv          = %d\n",
2273                         adapter->boot_ldrv);
2274         len += sprintf(page+len, "boot_pdrv_enabled  = %d\n",
2275                         adapter->boot_pdrv_enabled);
2276         len += sprintf(page+len, "boot_pdrv_ch       = %d\n",
2277                         adapter->boot_pdrv_ch);
2278         len += sprintf(page+len, "boot_pdrv_tgt      = %d\n",
2279                         adapter->boot_pdrv_tgt);
2280         len += sprintf(page+len, "quiescent          = %d\n",
2281                         atomic_read(&adapter->quiescent));
2282         len += sprintf(page+len, "has_cluster        = %d\n",
2283                         adapter->has_cluster);
2284
2285         len += sprintf(page+len, "\nModule Parameters:\n");
2286         len += sprintf(page+len, "max_cmd_per_lun    = %d\n",
2287                         max_cmd_per_lun);
2288         len += sprintf(page+len, "max_sectors_per_io = %d\n",
2289                         max_sectors_per_io);
2290
2291         *eof = 1;
2292
2293         return len;
2294 }
2295
2296
2297
2298 /**
2299  * proc_read_stat()
2300  * @page - buffer to write the data in
2301  * @start - where the actual data has been written in page
2302  * @offset - same meaning as the read system call
2303  * @count - same meaning as the read system call
2304  * @eof - set if no more data needs to be returned
2305  * @data - pointer to our soft state
2306  *
2307  * Diaplay statistical information about the I/O activity.
2308  */
2309 static int
2310 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2311                 void *data)
2312 {
2313         adapter_t       *adapter;
2314         int     len;
2315         int     i;
2316
2317         i = 0;  /* avoid compilation warnings */
2318         len = 0;
2319         adapter = (adapter_t *)data;
2320
2321         len = sprintf(page, "Statistical Information for this controller\n");
2322         len += sprintf(page+len, "pend_cmds = %d\n",
2323                         atomic_read(&adapter->pend_cmds));
2324 #if MEGA_HAVE_STATS
2325         for(i = 0; i < adapter->numldrv; i++) {
2326                 len += sprintf(page+len, "Logical Drive %d:\n", i);
2327
2328                 len += sprintf(page+len,
2329                         "\tReads Issued = %lu, Writes Issued = %lu\n",
2330                         adapter->nreads[i], adapter->nwrites[i]);
2331
2332                 len += sprintf(page+len,
2333                         "\tSectors Read = %lu, Sectors Written = %lu\n",
2334                         adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2335
2336                 len += sprintf(page+len,
2337                         "\tRead errors = %lu, Write errors = %lu\n\n",
2338                         adapter->rd_errors[i], adapter->wr_errors[i]);
2339         }
2340 #else
2341         len += sprintf(page+len,
2342                         "IO and error counters not compiled in driver.\n");
2343 #endif
2344
2345         *eof = 1;
2346
2347         return len;
2348 }
2349
2350
2351 /**
2352  * proc_read_mbox()
2353  * @page - buffer to write the data in
2354  * @start - where the actual data has been written in page
2355  * @offset - same meaning as the read system call
2356  * @count - same meaning as the read system call
2357  * @eof - set if no more data needs to be returned
2358  * @data - pointer to our soft state
2359  *
2360  * Display mailbox information for the last command issued. This information
2361  * is good for debugging.
2362  */
2363 static int
2364 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2365                 void *data)
2366 {
2367
2368         adapter_t       *adapter = (adapter_t *)data;
2369         volatile mbox_t *mbox = adapter->mbox;
2370         int     len = 0;
2371
2372         len = sprintf(page, "Contents of Mail Box Structure\n");
2373         len += sprintf(page+len, "  Fw Command   = 0x%02x\n",
2374                         mbox->m_out.cmd);
2375         len += sprintf(page+len, "  Cmd Sequence = 0x%02x\n",
2376                         mbox->m_out.cmdid);
2377         len += sprintf(page+len, "  No of Sectors= %04d\n",
2378                         mbox->m_out.numsectors);
2379         len += sprintf(page+len, "  LBA          = 0x%02x\n",
2380                         mbox->m_out.lba);
2381         len += sprintf(page+len, "  DTA          = 0x%08x\n",
2382                         mbox->m_out.xferaddr);
2383         len += sprintf(page+len, "  Logical Drive= 0x%02x\n",
2384                         mbox->m_out.logdrv);
2385         len += sprintf(page+len, "  No of SG Elmt= 0x%02x\n",
2386                         mbox->m_out.numsgelements);
2387         len += sprintf(page+len, "  Busy         = %01x\n",
2388                         mbox->m_in.busy);
2389         len += sprintf(page+len, "  Status       = 0x%02x\n",
2390                         mbox->m_in.status);
2391
2392         *eof = 1;
2393
2394         return len;
2395 }
2396
2397
2398 /**
2399  * proc_rebuild_rate()
2400  * @page - buffer to write the data in
2401  * @start - where the actual data has been written in page
2402  * @offset - same meaning as the read system call
2403  * @count - same meaning as the read system call
2404  * @eof - set if no more data needs to be returned
2405  * @data - pointer to our soft state
2406  *
2407  * Display current rebuild rate
2408  */
2409 static int
2410 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2411                 void *data)
2412 {
2413         adapter_t       *adapter = (adapter_t *)data;
2414         dma_addr_t      dma_handle;
2415         caddr_t         inquiry;
2416         struct pci_dev  *pdev;
2417         int     len = 0;
2418
2419         if( make_local_pdev(adapter, &pdev) != 0 ) {
2420                 *eof = 1;
2421                 return len;
2422         }
2423
2424         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2425                 free_local_pdev(pdev);
2426                 *eof = 1;
2427                 return len;
2428         }
2429
2430         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2431
2432                 len = sprintf(page, "Adapter inquiry failed.\n");
2433
2434                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2435
2436                 mega_free_inquiry(inquiry, dma_handle, pdev);
2437
2438                 free_local_pdev(pdev);
2439
2440                 *eof = 1;
2441
2442                 return len;
2443         }
2444
2445         if( adapter->flag & BOARD_40LD ) {
2446                 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2447                         ((mega_inquiry3 *)inquiry)->rebuild_rate);
2448         }
2449         else {
2450                 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2451                         ((mraid_ext_inquiry *)
2452                         inquiry)->raid_inq.adapter_info.rebuild_rate);
2453         }
2454
2455
2456         mega_free_inquiry(inquiry, dma_handle, pdev);
2457
2458         free_local_pdev(pdev);
2459
2460         *eof = 1;
2461
2462         return len;
2463 }
2464
2465
2466 /**
2467  * proc_battery()
2468  * @page - buffer to write the data in
2469  * @start - where the actual data has been written in page
2470  * @offset - same meaning as the read system call
2471  * @count - same meaning as the read system call
2472  * @eof - set if no more data needs to be returned
2473  * @data - pointer to our soft state
2474  *
2475  * Display information about the battery module on the controller.
2476  */
2477 static int
2478 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2479                 void *data)
2480 {
2481         adapter_t       *adapter = (adapter_t *)data;
2482         dma_addr_t      dma_handle;
2483         caddr_t         inquiry;
2484         struct pci_dev  *pdev;
2485         u8      battery_status = 0;
2486         char    str[256];
2487         int     len = 0;
2488
2489         if( make_local_pdev(adapter, &pdev) != 0 ) {
2490                 *eof = 1;
2491                 return len;
2492         }
2493
2494         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2495                 free_local_pdev(pdev);
2496                 *eof = 1;
2497                 return len;
2498         }
2499
2500         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2501
2502                 len = sprintf(page, "Adapter inquiry failed.\n");
2503
2504                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2505
2506                 mega_free_inquiry(inquiry, dma_handle, pdev);
2507
2508                 free_local_pdev(pdev);
2509
2510                 *eof = 1;
2511
2512                 return len;
2513         }
2514
2515         if( adapter->flag & BOARD_40LD ) {
2516                 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2517         }
2518         else {
2519                 battery_status = ((mraid_ext_inquiry *)inquiry)->
2520                         raid_inq.adapter_info.battery_status;
2521         }
2522
2523         /*
2524          * Decode the battery status
2525          */
2526         sprintf(str, "Battery Status:[%d]", battery_status);
2527
2528         if(battery_status == MEGA_BATT_CHARGE_DONE)
2529                 strcat(str, " Charge Done");
2530
2531         if(battery_status & MEGA_BATT_MODULE_MISSING)
2532                 strcat(str, " Module Missing");
2533
2534         if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2535                 strcat(str, " Low Voltage");
2536
2537         if(battery_status & MEGA_BATT_TEMP_HIGH)
2538                 strcat(str, " Temperature High");
2539
2540         if(battery_status & MEGA_BATT_PACK_MISSING)
2541                 strcat(str, " Pack Missing");
2542
2543         if(battery_status & MEGA_BATT_CHARGE_INPROG)
2544                 strcat(str, " Charge In-progress");
2545
2546         if(battery_status & MEGA_BATT_CHARGE_FAIL)
2547                 strcat(str, " Charge Fail");
2548
2549         if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2550                 strcat(str, " Cycles Exceeded");
2551
2552         len = sprintf(page, "%s\n", str);
2553
2554
2555         mega_free_inquiry(inquiry, dma_handle, pdev);
2556
2557         free_local_pdev(pdev);
2558
2559         *eof = 1;
2560
2561         return len;
2562 }
2563
2564
2565 /**
2566  * proc_pdrv_ch0()
2567  * @page - buffer to write the data in
2568  * @start - where the actual data has been written in page
2569  * @offset - same meaning as the read system call
2570  * @count - same meaning as the read system call
2571  * @eof - set if no more data needs to be returned
2572  * @data - pointer to our soft state
2573  *
2574  * Display information about the physical drives on physical channel 0.
2575  */
2576 static int
2577 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2578                 void *data)
2579 {
2580         adapter_t *adapter = (adapter_t *)data;
2581
2582         *eof = 1;
2583
2584         return (proc_pdrv(adapter, page, 0));
2585 }
2586
2587
2588 /**
2589  * proc_pdrv_ch1()
2590  * @page - buffer to write the data in
2591  * @start - where the actual data has been written in page
2592  * @offset - same meaning as the read system call
2593  * @count - same meaning as the read system call
2594  * @eof - set if no more data needs to be returned
2595  * @data - pointer to our soft state
2596  *
2597  * Display information about the physical drives on physical channel 1.
2598  */
2599 static int
2600 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2601                 void *data)
2602 {
2603         adapter_t *adapter = (adapter_t *)data;
2604
2605         *eof = 1;
2606
2607         return (proc_pdrv(adapter, page, 1));
2608 }
2609
2610
2611 /**
2612  * proc_pdrv_ch2()
2613  * @page - buffer to write the data in
2614  * @start - where the actual data has been written in page
2615  * @offset - same meaning as the read system call
2616  * @count - same meaning as the read system call
2617  * @eof - set if no more data needs to be returned
2618  * @data - pointer to our soft state
2619  *
2620  * Display information about the physical drives on physical channel 2.
2621  */
2622 static int
2623 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2624                 void *data)
2625 {
2626         adapter_t *adapter = (adapter_t *)data;
2627
2628         *eof = 1;
2629
2630         return (proc_pdrv(adapter, page, 2));
2631 }
2632
2633
2634 /**
2635  * proc_pdrv_ch3()
2636  * @page - buffer to write the data in
2637  * @start - where the actual data has been written in page
2638  * @offset - same meaning as the read system call
2639  * @count - same meaning as the read system call
2640  * @eof - set if no more data needs to be returned
2641  * @data - pointer to our soft state
2642  *
2643  * Display information about the physical drives on physical channel 3.
2644  */
2645 static int
2646 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2647                 void *data)
2648 {
2649         adapter_t *adapter = (adapter_t *)data;
2650
2651         *eof = 1;
2652
2653         return (proc_pdrv(adapter, page, 3));
2654 }
2655
2656
2657 /**
2658  * proc_pdrv()
2659  * @page - buffer to write the data in
2660  * @adapter - pointer to our soft state
2661  *
2662  * Display information about the physical drives.
2663  */
2664 static int
2665 proc_pdrv(adapter_t *adapter, char *page, int channel)
2666 {
2667         dma_addr_t      dma_handle;
2668         char            *scsi_inq;
2669         dma_addr_t      scsi_inq_dma_handle;
2670         caddr_t         inquiry;
2671         struct pci_dev  *pdev;
2672         u8      *pdrv_state;
2673         u8      state;
2674         int     tgt;
2675         int     max_channels;
2676         int     len = 0;
2677         char    str[80];
2678         int     i;
2679
2680         if( make_local_pdev(adapter, &pdev) != 0 ) {
2681                 return len;
2682         }
2683
2684         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2685                 goto free_pdev;
2686         }
2687
2688         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2689                 len = sprintf(page, "Adapter inquiry failed.\n");
2690
2691                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2692
2693                 goto free_inquiry;
2694         }
2695
2696
2697         scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2698
2699         if( scsi_inq == NULL ) {
2700                 len = sprintf(page, "memory not available for scsi inq.\n");
2701
2702                 goto free_inquiry;
2703         }
2704
2705         if( adapter->flag & BOARD_40LD ) {
2706                 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2707         }
2708         else {
2709                 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2710                         raid_inq.pdrv_info.pdrv_state;
2711         }
2712
2713         max_channels = adapter->product_info.nchannels;
2714
2715         if( channel >= max_channels ) {
2716                 goto free_pci;
2717         }
2718
2719         for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2720
2721                 i = channel*16 + tgt;
2722
2723                 state = *(pdrv_state + i);
2724
2725                 switch( state & 0x0F ) {
2726
2727                 case PDRV_ONLINE:
2728                         sprintf(str,
2729                         "Channel:%2d Id:%2d State: Online",
2730                                 channel, tgt);
2731                         break;
2732
2733                 case PDRV_FAILED:
2734                         sprintf(str,
2735                         "Channel:%2d Id:%2d State: Failed",
2736                                 channel, tgt);
2737                         break;
2738
2739                 case PDRV_RBLD:
2740                         sprintf(str,
2741                         "Channel:%2d Id:%2d State: Rebuild",
2742                                 channel, tgt);
2743                         break;
2744
2745                 case PDRV_HOTSPARE:
2746                         sprintf(str,
2747                         "Channel:%2d Id:%2d State: Hot spare",
2748                                 channel, tgt);
2749                         break;
2750
2751                 default:
2752                         sprintf(str,
2753                         "Channel:%2d Id:%2d State: Un-configured",
2754                                 channel, tgt);
2755                         break;
2756
2757                 }
2758
2759                 /*
2760                  * This interface displays inquiries for disk drives
2761                  * only. Inquries for logical drives and non-disk
2762                  * devices are available through /proc/scsi/scsi
2763                  */
2764                 memset(scsi_inq, 0, 256);
2765                 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2766                                 scsi_inq_dma_handle) ||
2767                                 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2768                         continue;
2769                 }
2770
2771                 /*
2772                  * Check for overflow. We print less than 240
2773                  * characters for inquiry
2774                  */
2775                 if( (len + 240) >= PAGE_SIZE ) break;
2776
2777                 len += sprintf(page+len, "%s.\n", str);
2778
2779                 len += mega_print_inquiry(page+len, scsi_inq);
2780         }
2781
2782 free_pci:
2783         pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2784 free_inquiry:
2785         mega_free_inquiry(inquiry, dma_handle, pdev);
2786 free_pdev:
2787         free_local_pdev(pdev);
2788
2789         return len;
2790 }
2791
2792
2793 /*
2794  * Display scsi inquiry
2795  */
2796 static int
2797 mega_print_inquiry(char *page, char *scsi_inq)
2798 {
2799         int     len = 0;
2800         int     i;
2801
2802         len = sprintf(page, "  Vendor: ");
2803         for( i = 8; i < 16; i++ ) {
2804                 len += sprintf(page+len, "%c", scsi_inq[i]);
2805         }
2806
2807         len += sprintf(page+len, "  Model: ");
2808
2809         for( i = 16; i < 32; i++ ) {
2810                 len += sprintf(page+len, "%c", scsi_inq[i]);
2811         }
2812
2813         len += sprintf(page+len, "  Rev: ");
2814
2815         for( i = 32; i < 36; i++ ) {
2816                 len += sprintf(page+len, "%c", scsi_inq[i]);
2817         }
2818
2819         len += sprintf(page+len, "\n");
2820
2821         i = scsi_inq[0] & 0x1f;
2822
2823         len += sprintf(page+len, "  Type:   %s ", scsi_device_type(i));
2824
2825         len += sprintf(page+len,
2826         "                 ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2827
2828         if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2829                 len += sprintf(page+len, " CCS\n");
2830         else
2831                 len += sprintf(page+len, "\n");
2832
2833         return len;
2834 }
2835
2836
2837 /**
2838  * proc_rdrv_10()
2839  * @page - buffer to write the data in
2840  * @start - where the actual data has been written in page
2841  * @offset - same meaning as the read system call
2842  * @count - same meaning as the read system call
2843  * @eof - set if no more data needs to be returned
2844  * @data - pointer to our soft state
2845  *
2846  * Display real time information about the logical drives 0 through 9.
2847  */
2848 static int
2849 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2850                 void *data)
2851 {
2852         adapter_t *adapter = (adapter_t *)data;
2853
2854         *eof = 1;
2855
2856         return (proc_rdrv(adapter, page, 0, 9));
2857 }
2858
2859
2860 /**
2861  * proc_rdrv_20()
2862  * @page - buffer to write the data in
2863  * @start - where the actual data has been written in page
2864  * @offset - same meaning as the read system call
2865  * @count - same meaning as the read system call
2866  * @eof - set if no more data needs to be returned
2867  * @data - pointer to our soft state
2868  *
2869  * Display real time information about the logical drives 0 through 9.
2870  */
2871 static int
2872 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2873                 void *data)
2874 {
2875         adapter_t *adapter = (adapter_t *)data;
2876
2877         *eof = 1;
2878
2879         return (proc_rdrv(adapter, page, 10, 19));
2880 }
2881
2882
2883 /**
2884  * proc_rdrv_30()
2885  * @page - buffer to write the data in
2886  * @start - where the actual data has been written in page
2887  * @offset - same meaning as the read system call
2888  * @count - same meaning as the read system call
2889  * @eof - set if no more data needs to be returned
2890  * @data - pointer to our soft state
2891  *
2892  * Display real time information about the logical drives 0 through 9.
2893  */
2894 static int
2895 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2896                 void *data)
2897 {
2898         adapter_t *adapter = (adapter_t *)data;
2899
2900         *eof = 1;
2901
2902         return (proc_rdrv(adapter, page, 20, 29));
2903 }
2904
2905
2906 /**
2907  * proc_rdrv_40()
2908  * @page - buffer to write the data in
2909  * @start - where the actual data has been written in page
2910  * @offset - same meaning as the read system call
2911  * @count - same meaning as the read system call
2912  * @eof - set if no more data needs to be returned
2913  * @data - pointer to our soft state
2914  *
2915  * Display real time information about the logical drives 0 through 9.
2916  */
2917 static int
2918 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2919                 void *data)
2920 {
2921         adapter_t *adapter = (adapter_t *)data;
2922
2923         *eof = 1;
2924
2925         return (proc_rdrv(adapter, page, 30, 39));
2926 }
2927
2928
2929 /**
2930  * proc_rdrv()
2931  * @page - buffer to write the data in
2932  * @adapter - pointer to our soft state
2933  * @start - starting logical drive to display
2934  * @end - ending logical drive to display
2935  *
2936  * We do not print the inquiry information since its already available through
2937  * /proc/scsi/scsi interface
2938  */
2939 static int
2940 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2941 {
2942         dma_addr_t      dma_handle;
2943         logdrv_param    *lparam;
2944         megacmd_t       mc;
2945         char            *disk_array;
2946         dma_addr_t      disk_array_dma_handle;
2947         caddr_t         inquiry;
2948         struct pci_dev  *pdev;
2949         u8      *rdrv_state;
2950         int     num_ldrv;
2951         u32     array_sz;
2952         int     len = 0;
2953         int     i;
2954
2955         if( make_local_pdev(adapter, &pdev) != 0 ) {
2956                 return len;
2957         }
2958
2959         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2960                 free_local_pdev(pdev);
2961                 return len;
2962         }
2963
2964         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2965
2966                 len = sprintf(page, "Adapter inquiry failed.\n");
2967
2968                 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2969
2970                 mega_free_inquiry(inquiry, dma_handle, pdev);
2971
2972                 free_local_pdev(pdev);
2973
2974                 return len;
2975         }
2976
2977         memset(&mc, 0, sizeof(megacmd_t));
2978
2979         if( adapter->flag & BOARD_40LD ) {
2980                 array_sz = sizeof(disk_array_40ld);
2981
2982                 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2983
2984                 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2985         }
2986         else {
2987                 array_sz = sizeof(disk_array_8ld);
2988
2989                 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2990                         raid_inq.logdrv_info.ldrv_state;
2991
2992                 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2993                         raid_inq.logdrv_info.num_ldrv;
2994         }
2995
2996         disk_array = pci_alloc_consistent(pdev, array_sz,
2997                         &disk_array_dma_handle);
2998
2999         if( disk_array == NULL ) {
3000                 len = sprintf(page, "memory not available.\n");
3001
3002                 mega_free_inquiry(inquiry, dma_handle, pdev);
3003
3004                 free_local_pdev(pdev);
3005
3006                 return len;
3007         }
3008
3009         mc.xferaddr = (u32)disk_array_dma_handle;
3010
3011         if( adapter->flag & BOARD_40LD ) {
3012                 mc.cmd = FC_NEW_CONFIG;
3013                 mc.opcode = OP_DCMD_READ_CONFIG;
3014
3015                 if( mega_internal_command(adapter, &mc, NULL) ) {
3016
3017                         len = sprintf(page, "40LD read config failed.\n");
3018
3019                         mega_free_inquiry(inquiry, dma_handle, pdev);
3020
3021                         pci_free_consistent(pdev, array_sz, disk_array,
3022                                         disk_array_dma_handle);
3023
3024                         free_local_pdev(pdev);
3025
3026                         return len;
3027                 }
3028
3029         }
3030         else {
3031                 mc.cmd = NEW_READ_CONFIG_8LD;
3032
3033                 if( mega_internal_command(adapter, &mc, NULL) ) {
3034
3035                         mc.cmd = READ_CONFIG_8LD;
3036
3037                         if( mega_internal_command(adapter, &mc,
3038                                                 NULL) ){
3039
3040                                 len = sprintf(page,
3041                                         "8LD read config failed.\n");
3042
3043                                 mega_free_inquiry(inquiry, dma_handle, pdev);
3044
3045                                 pci_free_consistent(pdev, array_sz,
3046                                                 disk_array,
3047                                                 disk_array_dma_handle);
3048
3049                                 free_local_pdev(pdev);
3050
3051                                 return len;
3052                         }
3053                 }
3054         }
3055
3056         for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3057
3058                 if( adapter->flag & BOARD_40LD ) {
3059                         lparam =
3060                         &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3061                 }
3062                 else {
3063                         lparam =
3064                         &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3065                 }
3066
3067                 /*
3068                  * Check for overflow. We print less than 240 characters for
3069                  * information about each logical drive.
3070                  */
3071                 if( (len + 240) >= PAGE_SIZE ) break;
3072
3073                 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3074
3075                 switch( rdrv_state[i] & 0x0F ) {
3076                 case RDRV_OFFLINE:
3077                         len += sprintf(page+len, "state: offline");
3078                         break;
3079
3080                 case RDRV_DEGRADED:
3081                         len += sprintf(page+len, "state: degraded");
3082                         break;
3083
3084                 case RDRV_OPTIMAL:
3085                         len += sprintf(page+len, "state: optimal");
3086                         break;
3087
3088                 case RDRV_DELETED:
3089                         len += sprintf(page+len, "state: deleted");
3090                         break;
3091
3092                 default:
3093                         len += sprintf(page+len, "state: unknown");
3094                         break;
3095                 }
3096
3097                 /*
3098                  * Check if check consistency or initialization is going on
3099                  * for this logical drive.
3100                  */
3101                 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3102                         len += sprintf(page+len,
3103                                         ", check-consistency in progress");
3104                 }
3105                 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3106                         len += sprintf(page+len,
3107                                         ", initialization in progress");
3108                 }
3109
3110                 len += sprintf(page+len, "\n");
3111
3112                 len += sprintf(page+len, "Span depth:%3d, ",
3113                                 lparam->span_depth);
3114
3115                 len += sprintf(page+len, "RAID level:%3d, ",
3116                                 lparam->level);
3117
3118                 len += sprintf(page+len, "Stripe size:%3d, ",
3119                                 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3120
3121                 len += sprintf(page+len, "Row size:%3d\n",
3122                                 lparam->row_size);
3123
3124
3125                 len += sprintf(page+len, "Read Policy: ");
3126
3127                 switch(lparam->read_ahead) {
3128
3129                 case NO_READ_AHEAD:
3130                         len += sprintf(page+len, "No read ahead, ");
3131                         break;
3132
3133                 case READ_AHEAD:
3134                         len += sprintf(page+len, "Read ahead, ");
3135                         break;
3136
3137                 case ADAP_READ_AHEAD:
3138                         len += sprintf(page+len, "Adaptive, ");
3139                         break;
3140
3141                 }
3142
3143                 len += sprintf(page+len, "Write Policy: ");
3144
3145                 switch(lparam->write_mode) {
3146
3147                 case WRMODE_WRITE_THRU:
3148                         len += sprintf(page+len, "Write thru, ");
3149                         break;
3150
3151                 case WRMODE_WRITE_BACK:
3152                         len += sprintf(page+len, "Write back, ");
3153                         break;
3154                 }
3155
3156                 len += sprintf(page+len, "Cache Policy: ");
3157
3158                 switch(lparam->direct_io) {
3159
3160                 case CACHED_IO:
3161                         len += sprintf(page+len, "Cached IO\n\n");
3162                         break;
3163
3164                 case DIRECT_IO:
3165                         len += sprintf(page+len, "Direct IO\n\n");
3166                         break;
3167                 }
3168         }
3169
3170         mega_free_inquiry(inquiry, dma_handle, pdev);
3171
3172         pci_free_consistent(pdev, array_sz, disk_array,
3173                         disk_array_dma_handle);
3174
3175         free_local_pdev(pdev);
3176
3177         return len;
3178 }
3179
3180 #endif
3181
3182
3183 /**
3184  * megaraid_biosparam()
3185  *
3186  * Return the disk geometry for a particular disk
3187  */
3188 static int
3189 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3190                     sector_t capacity, int geom[])
3191 {
3192         adapter_t       *adapter;
3193         unsigned char   *bh;
3194         int     heads;
3195         int     sectors;
3196         int     cylinders;
3197         int     rval;
3198
3199         /* Get pointer to host config structure */
3200         adapter = (adapter_t *)sdev->host->hostdata;
3201
3202         if (IS_RAID_CH(adapter, sdev->channel)) {
3203                         /* Default heads (64) & sectors (32) */
3204                         heads = 64;
3205                         sectors = 32;
3206                         cylinders = (ulong)capacity / (heads * sectors);
3207
3208                         /*
3209                          * Handle extended translation size for logical drives
3210                          * > 1Gb
3211                          */
3212                         if ((ulong)capacity >= 0x200000) {
3213                                 heads = 255;
3214                                 sectors = 63;
3215                                 cylinders = (ulong)capacity / (heads * sectors);
3216                         }
3217
3218                         /* return result */
3219                         geom[0] = heads;
3220                         geom[1] = sectors;
3221                         geom[2] = cylinders;
3222         }
3223         else {
3224                 bh = scsi_bios_ptable(bdev);
3225
3226                 if( bh ) {
3227                         rval = scsi_partsize(bh, capacity,
3228                                             &geom[2], &geom[0], &geom[1]);
3229                         kfree(bh);
3230                         if( rval != -1 )
3231                                 return rval;
3232                 }
3233
3234                 printk(KERN_INFO
3235                 "megaraid: invalid partition on this disk on channel %d\n",
3236                                 sdev->channel);
3237
3238                 /* Default heads (64) & sectors (32) */
3239                 heads = 64;
3240                 sectors = 32;
3241                 cylinders = (ulong)capacity / (heads * sectors);
3242
3243                 /* Handle extended translation size for logical drives > 1Gb */
3244                 if ((ulong)capacity >= 0x200000) {
3245                         heads = 255;
3246                         sectors = 63;
3247                         cylinders = (ulong)capacity / (heads * sectors);
3248                 }
3249
3250                 /* return result */
3251                 geom[0] = heads;
3252                 geom[1] = sectors;
3253                 geom[2] = cylinders;
3254         }
3255
3256         return 0;
3257 }
3258
3259 /**
3260  * mega_init_scb()
3261  * @adapter - pointer to our soft state
3262  *
3263  * Allocate memory for the various pointers in the scb structures:
3264  * scatter-gather list pointer, passthru and extended passthru structure
3265  * pointers.
3266  */
3267 static int
3268 mega_init_scb(adapter_t *adapter)
3269 {
3270         scb_t   *scb;
3271         int     i;
3272
3273         for( i = 0; i < adapter->max_cmds; i++ ) {
3274
3275                 scb = &adapter->scb_list[i];
3276
3277                 scb->sgl64 = NULL;
3278                 scb->sgl = NULL;
3279                 scb->pthru = NULL;
3280                 scb->epthru = NULL;
3281         }
3282
3283         for( i = 0; i < adapter->max_cmds; i++ ) {
3284
3285                 scb = &adapter->scb_list[i];
3286
3287                 scb->idx = i;
3288
3289                 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3290                                 sizeof(mega_sgl64) * adapter->sglen,
3291                                 &scb->sgl_dma_addr);
3292
3293                 scb->sgl = (mega_sglist *)scb->sgl64;
3294
3295                 if( !scb->sgl ) {
3296                         printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3297                         mega_free_sgl(adapter);
3298                         return -1;
3299                 }
3300
3301                 scb->pthru = pci_alloc_consistent(adapter->dev,
3302                                 sizeof(mega_passthru),
3303                                 &scb->pthru_dma_addr);
3304
3305                 if( !scb->pthru ) {
3306                         printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3307                         mega_free_sgl(adapter);
3308                         return -1;
3309                 }
3310
3311                 scb->epthru = pci_alloc_consistent(adapter->dev,
3312                                 sizeof(mega_ext_passthru),
3313                                 &scb->epthru_dma_addr);
3314
3315                 if( !scb->epthru ) {
3316                         printk(KERN_WARNING
3317                                 "Can't allocate extended passthru.\n");
3318                         mega_free_sgl(adapter);
3319                         return -1;
3320                 }
3321
3322
3323                 scb->dma_type = MEGA_DMA_TYPE_NONE;
3324
3325                 /*
3326                  * Link to free list
3327                  * lock not required since we are loading the driver, so no
3328                  * commands possible right now.
3329                  */
3330                 scb->state = SCB_FREE;
3331                 scb->cmd = NULL;
3332                 list_add(&scb->list, &adapter->free_list);
3333         }
3334
3335         return 0;
3336 }
3337
3338
3339 /**
3340  * megadev_open()
3341  * @inode - unused
3342  * @filep - unused
3343  *
3344  * Routines for the character/ioctl interface to the driver. Find out if this
3345  * is a valid open. If yes, increment the module use count so that it cannot
3346  * be unloaded.
3347  */
3348 static int
3349 megadev_open (struct inode *inode, struct file *filep)
3350 {
3351         /*
3352          * Only allow superuser to access private ioctl interface
3353          */
3354         if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3355
3356         return 0;
3357 }
3358
3359
3360 /**
3361  * megadev_ioctl()
3362  * @inode - Our device inode
3363  * @filep - unused
3364  * @cmd - ioctl command
3365  * @arg - user buffer
3366  *
3367  * ioctl entry point for our private ioctl interface. We move the data in from
3368  * the user space, prepare the command (if necessary, convert the old MIMD
3369  * ioctl to new ioctl command), and issue a synchronous command to the
3370  * controller.
3371  */
3372 static int
3373 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3374                 unsigned long arg)
3375 {
3376         adapter_t       *adapter;
3377         nitioctl_t      uioc;
3378         int             adapno;
3379         int             rval;
3380         mega_passthru   __user *upthru; /* user address for passthru */
3381         mega_passthru   *pthru;         /* copy user passthru here */
3382         dma_addr_t      pthru_dma_hndl;
3383         void            *data = NULL;   /* data to be transferred */
3384         dma_addr_t      data_dma_hndl;  /* dma handle for data xfer area */
3385         megacmd_t       mc;
3386         megastat_t      __user *ustats;
3387         int             num_ldrv;
3388         u32             uxferaddr = 0;
3389         struct pci_dev  *pdev;
3390
3391         ustats = NULL; /* avoid compilation warnings */
3392         num_ldrv = 0;
3393
3394         /*
3395          * Make sure only USCSICMD are issued through this interface.
3396          * MIMD application would still fire different command.
3397          */
3398         if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3399                 return -EINVAL;
3400         }
3401
3402         /*
3403          * Check and convert a possible MIMD command to NIT command.
3404          * mega_m_to_n() copies the data from the user space, so we do not
3405          * have to do it here.
3406          * NOTE: We will need some user address to copyout the data, therefore
3407          * the inteface layer will also provide us with the required user
3408          * addresses.
3409          */
3410         memset(&uioc, 0, sizeof(nitioctl_t));
3411         if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3412                 return rval;
3413
3414
3415         switch( uioc.opcode ) {
3416
3417         case GET_DRIVER_VER:
3418                 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3419                         return (-EFAULT);
3420
3421                 break;
3422
3423         case GET_N_ADAP:
3424                 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3425                         return (-EFAULT);
3426
3427                 /*
3428                  * Shucks. MIMD interface returns a positive value for number
3429                  * of adapters. TODO: Change it to return 0 when there is no
3430                  * applicatio using mimd interface.
3431                  */
3432                 return hba_count;
3433
3434         case GET_ADAP_INFO:
3435
3436                 /*
3437                  * Which adapter
3438                  */
3439                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3440                         return (-ENODEV);
3441
3442                 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3443                                 sizeof(struct mcontroller)) )
3444                         return (-EFAULT);
3445                 break;
3446
3447 #if MEGA_HAVE_STATS
3448
3449         case GET_STATS:
3450                 /*
3451                  * Which adapter
3452                  */
3453                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3454                         return (-ENODEV);
3455
3456                 adapter = hba_soft_state[adapno];
3457
3458                 ustats = uioc.uioc_uaddr;
3459
3460                 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3461                         return (-EFAULT);
3462
3463                 /*
3464                  * Check for the validity of the logical drive number
3465                  */
3466                 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3467
3468                 if( copy_to_user(ustats->nreads, adapter->nreads,
3469                                         num_ldrv*sizeof(u32)) )
3470                         return -EFAULT;
3471
3472                 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3473                                         num_ldrv*sizeof(u32)) )
3474                         return -EFAULT;
3475
3476                 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3477                                         num_ldrv*sizeof(u32)) )
3478                         return -EFAULT;
3479
3480                 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3481                                         num_ldrv*sizeof(u32)) )
3482                         return -EFAULT;
3483
3484                 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3485                                         num_ldrv*sizeof(u32)) )
3486                         return -EFAULT;
3487
3488                 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3489                                         num_ldrv*sizeof(u32)) )
3490                         return -EFAULT;
3491
3492                 return 0;
3493
3494 #endif
3495         case MBOX_CMD:
3496
3497                 /*
3498                  * Which adapter
3499                  */
3500                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3501                         return (-ENODEV);
3502
3503                 adapter = hba_soft_state[adapno];
3504
3505                 /*
3506                  * Deletion of logical drive is a special case. The adapter
3507                  * should be quiescent before this command is issued.
3508                  */
3509                 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3510                                 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3511
3512                         /*
3513                          * Do we support this feature
3514                          */
3515                         if( !adapter->support_random_del ) {
3516                                 printk(KERN_WARNING "megaraid: logdrv ");
3517                                 printk("delete on non-supporting F/W.\n");
3518
3519                                 return (-EINVAL);
3520                         }
3521
3522                         rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3523
3524                         if( rval == 0 ) {
3525                                 memset(&mc, 0, sizeof(megacmd_t));
3526
3527                                 mc.status = rval;
3528
3529                                 rval = mega_n_to_m((void __user *)arg, &mc);
3530                         }
3531
3532                         return rval;
3533                 }
3534                 /*
3535                  * This interface only support the regular passthru commands.
3536                  * Reject extended passthru and 64-bit passthru
3537                  */
3538                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3539                         uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3540
3541                         printk(KERN_WARNING "megaraid: rejected passthru.\n");
3542
3543                         return (-EINVAL);
3544                 }
3545
3546                 /*
3547                  * For all internal commands, the buffer must be allocated in
3548                  * <4GB address range
3549                  */
3550                 if( make_local_pdev(adapter, &pdev) != 0 )
3551                         return -EIO;
3552
3553                 /* Is it a passthru command or a DCMD */
3554                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3555                         /* Passthru commands */
3556
3557                         pthru = pci_alloc_consistent(pdev,
3558                                         sizeof(mega_passthru),
3559                                         &pthru_dma_hndl);
3560
3561                         if( pthru == NULL ) {
3562                                 free_local_pdev(pdev);
3563                                 return (-ENOMEM);
3564                         }
3565
3566                         /*
3567                          * The user passthru structure
3568                          */
3569                         upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3570
3571                         /*
3572                          * Copy in the user passthru here.
3573                          */
3574                         if( copy_from_user(pthru, upthru,
3575                                                 sizeof(mega_passthru)) ) {
3576
3577                                 pci_free_consistent(pdev,
3578                                                 sizeof(mega_passthru), pthru,
3579                                                 pthru_dma_hndl);
3580
3581                                 free_local_pdev(pdev);
3582
3583                                 return (-EFAULT);
3584                         }
3585
3586                         /*
3587                          * Is there a data transfer
3588                          */
3589                         if( pthru->dataxferlen ) {
3590                                 data = pci_alloc_consistent(pdev,
3591                                                 pthru->dataxferlen,
3592                                                 &data_dma_hndl);
3593
3594                                 if( data == NULL ) {
3595                                         pci_free_consistent(pdev,
3596                                                         sizeof(mega_passthru),
3597                                                         pthru,
3598                                                         pthru_dma_hndl);
3599
3600                                         free_local_pdev(pdev);
3601
3602                                         return (-ENOMEM);
3603                                 }
3604
3605                                 /*
3606                                  * Save the user address and point the kernel
3607                                  * address at just allocated memory
3608                                  */
3609                                 uxferaddr = pthru->dataxferaddr;
3610                                 pthru->dataxferaddr = data_dma_hndl;
3611                         }
3612
3613
3614                         /*
3615                          * Is data coming down-stream
3616                          */
3617                         if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3618                                 /*
3619                                  * Get the user data
3620                                  */
3621                                 if( copy_from_user(data, (char __user *)uxferaddr,
3622                                                         pthru->dataxferlen) ) {
3623                                         rval = (-EFAULT);
3624                                         goto freemem_and_return;
3625                                 }
3626                         }
3627
3628                         memset(&mc, 0, sizeof(megacmd_t));
3629
3630                         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3631                         mc.xferaddr = (u32)pthru_dma_hndl;
3632
3633                         /*
3634                          * Issue the command
3635                          */
3636                         mega_internal_command(adapter, &mc, pthru);
3637
3638                         rval = mega_n_to_m((void __user *)arg, &mc);
3639
3640                         if( rval ) goto freemem_and_return;
3641
3642
3643                         /*
3644                          * Is data going up-stream
3645                          */
3646                         if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3647                                 if( copy_to_user((char __user *)uxferaddr, data,
3648                                                         pthru->dataxferlen) ) {
3649                                         rval = (-EFAULT);
3650                                 }
3651                         }
3652
3653                         /*
3654                          * Send the request sense data also, irrespective of
3655                          * whether the user has asked for it or not.
3656                          */
3657                         if (copy_to_user(upthru->reqsensearea,
3658                                         pthru->reqsensearea, 14))
3659                                 rval = -EFAULT;
3660
3661 freemem_and_return:
3662                         if( pthru->dataxferlen ) {
3663                                 pci_free_consistent(pdev,
3664                                                 pthru->dataxferlen, data,
3665                                                 data_dma_hndl);
3666                         }
3667
3668                         pci_free_consistent(pdev, sizeof(mega_passthru),
3669                                         pthru, pthru_dma_hndl);
3670
3671                         free_local_pdev(pdev);
3672
3673                         return rval;
3674                 }
3675                 else {
3676                         /* DCMD commands */
3677
3678                         /*
3679                          * Is there a data transfer
3680                          */
3681                         if( uioc.xferlen ) {
3682                                 data = pci_alloc_consistent(pdev,
3683                                                 uioc.xferlen, &data_dma_hndl);
3684
3685                                 if( data == NULL ) {
3686                                         free_local_pdev(pdev);
3687                                         return (-ENOMEM);
3688                                 }
3689
3690                                 uxferaddr = MBOX(uioc)->xferaddr;
3691                         }
3692
3693                         /*
3694                          * Is data coming down-stream
3695                          */
3696                         if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3697                                 /*
3698                                  * Get the user data
3699                                  */
3700                                 if( copy_from_user(data, (char __user *)uxferaddr,
3701                                                         uioc.xferlen) ) {
3702
3703                                         pci_free_consistent(pdev,
3704                                                         uioc.xferlen,
3705                                                         data, data_dma_hndl);
3706
3707                                         free_local_pdev(pdev);
3708
3709                                         return (-EFAULT);
3710                                 }
3711                         }
3712
3713                         memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3714
3715                         mc.xferaddr = (u32)data_dma_hndl;
3716
3717                         /*
3718                          * Issue the command
3719                          */
3720                         mega_internal_command(adapter, &mc, NULL);
3721
3722                         rval = mega_n_to_m((void __user *)arg, &mc);
3723
3724                         if( rval ) {
3725                                 if( uioc.xferlen ) {
3726                                         pci_free_consistent(pdev,
3727                                                         uioc.xferlen, data,
3728                                                         data_dma_hndl);
3729                                 }
3730
3731                                 free_local_pdev(pdev);
3732
3733                                 return rval;
3734                         }
3735
3736                         /*
3737                          * Is data going up-stream
3738                          */
3739                         if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3740                                 if( copy_to_user((char __user *)uxferaddr, data,
3741                                                         uioc.xferlen) ) {
3742
3743                                         rval = (-EFAULT);
3744                                 }
3745                         }
3746
3747                         if( uioc.xferlen ) {
3748                                 pci_free_consistent(pdev,
3749                                                 uioc.xferlen, data,
3750                                                 data_dma_hndl);
3751                         }
3752
3753                         free_local_pdev(pdev);
3754
3755                         return rval;
3756                 }
3757
3758         default:
3759                 return (-EINVAL);
3760         }
3761
3762         return 0;
3763 }
3764
3765 /**
3766  * mega_m_to_n()
3767  * @arg - user address
3768  * @uioc - new ioctl structure
3769  *
3770  * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3771  * structure
3772  *
3773  * Converts the older mimd ioctl structure to newer NIT structure
3774  */
3775 static int
3776 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3777 {
3778         struct uioctl_t uioc_mimd;
3779         char    signature[8] = {0};
3780         u8      opcode;
3781         u8      subopcode;
3782
3783
3784         /*
3785          * check is the application conforms to NIT. We do not have to do much
3786          * in that case.
3787          * We exploit the fact that the signature is stored in the very
3788          * begining of the structure.
3789          */
3790
3791         if( copy_from_user(signature, arg, 7) )
3792                 return (-EFAULT);
3793
3794         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3795
3796                 /*
3797                  * NOTE NOTE: The nit ioctl is still under flux because of
3798                  * change of mailbox definition, in HPE. No applications yet
3799                  * use this interface and let's not have applications use this
3800                  * interface till the new specifitions are in place.
3801                  */
3802                 return -EINVAL;
3803 #if 0
3804                 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3805                         return (-EFAULT);
3806                 return 0;
3807 #endif
3808         }
3809
3810         /*
3811          * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3812          *
3813          * Get the user ioctl structure
3814          */
3815         if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3816                 return (-EFAULT);
3817
3818
3819         /*
3820          * Get the opcode and subopcode for the commands
3821          */
3822         opcode = uioc_mimd.ui.fcs.opcode;
3823         subopcode = uioc_mimd.ui.fcs.subopcode;
3824
3825         switch (opcode) {
3826         case 0x82:
3827
3828                 switch (subopcode) {
3829
3830                 case MEGAIOC_QDRVRVER:  /* Query driver version */
3831                         uioc->opcode = GET_DRIVER_VER;
3832                         uioc->uioc_uaddr = uioc_mimd.data;
3833                         break;
3834
3835                 case MEGAIOC_QNADAP:    /* Get # of adapters */
3836                         uioc->opcode = GET_N_ADAP;
3837                         uioc->uioc_uaddr = uioc_mimd.data;
3838                         break;
3839
3840                 case MEGAIOC_QADAPINFO: /* Get adapter information */
3841                         uioc->opcode = GET_ADAP_INFO;
3842                         uioc->adapno = uioc_mimd.ui.fcs.adapno;
3843                         uioc->uioc_uaddr = uioc_mimd.data;
3844                         break;
3845
3846                 default:
3847                         return(-EINVAL);
3848                 }
3849
3850                 break;
3851
3852
3853         case 0x81:
3854
3855                 uioc->opcode = MBOX_CMD;
3856                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3857
3858                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3859
3860                 uioc->xferlen = uioc_mimd.ui.fcs.length;
3861
3862                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3863                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3864
3865                 break;
3866
3867         case 0x80:
3868
3869                 uioc->opcode = MBOX_CMD;
3870                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3871
3872                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3873
3874                 /*
3875                  * Choose the xferlen bigger of input and output data
3876                  */
3877                 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3878                         uioc_mimd.outlen : uioc_mimd.inlen;
3879
3880                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3881                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3882
3883                 break;
3884
3885         default:
3886                 return (-EINVAL);
3887
3888         }
3889
3890         return 0;
3891 }
3892
3893 /*
3894  * mega_n_to_m()
3895  * @arg - user address
3896  * @mc - mailbox command
3897  *
3898  * Updates the status information to the application, depending on application
3899  * conforms to older mimd ioctl interface or newer NIT ioctl interface
3900  */
3901 static int
3902 mega_n_to_m(void __user *arg, megacmd_t *mc)
3903 {
3904         nitioctl_t      __user *uiocp;
3905         megacmd_t       __user *umc;
3906         mega_passthru   __user *upthru;
3907         struct uioctl_t __user *uioc_mimd;
3908         char    signature[8] = {0};
3909
3910         /*
3911          * check is the application conforms to NIT.
3912          */
3913         if( copy_from_user(signature, arg, 7) )
3914                 return -EFAULT;
3915
3916         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3917
3918                 uiocp = arg;
3919
3920                 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3921                         return (-EFAULT);
3922
3923                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3924
3925                         umc = MBOX_P(uiocp);
3926
3927                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3928                                 return -EFAULT;
3929
3930                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3931                                 return (-EFAULT);
3932                 }
3933         }
3934         else {
3935                 uioc_mimd = arg;
3936
3937                 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3938                         return (-EFAULT);
3939
3940                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3941
3942                         umc = (megacmd_t __user *)uioc_mimd->mbox;
3943
3944                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3945                                 return (-EFAULT);
3946
3947                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3948                                 return (-EFAULT);
3949                 }
3950         }
3951
3952         return 0;
3953 }
3954
3955
3956 /*
3957  * MEGARAID 'FW' commands.
3958  */
3959
3960 /**
3961  * mega_is_bios_enabled()
3962  * @adapter - pointer to our soft state
3963  *
3964  * issue command to find out if the BIOS is enabled for this controller
3965  */
3966 static int
3967 mega_is_bios_enabled(adapter_t *adapter)
3968 {
3969         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3970         mbox_t  *mbox;
3971         int     ret;
3972
3973         mbox = (mbox_t *)raw_mbox;
3974
3975         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3976
3977         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3978
3979         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3980
3981         raw_mbox[0] = IS_BIOS_ENABLED;
3982         raw_mbox[2] = GET_BIOS;
3983
3984
3985         ret = issue_scb_block(adapter, raw_mbox);
3986
3987         return *(char *)adapter->mega_buffer;
3988 }
3989
3990
3991 /**
3992  * mega_enum_raid_scsi()
3993  * @adapter - pointer to our soft state
3994  *
3995  * Find out what channels are RAID/SCSI. This information is used to
3996  * differentiate the virtual channels and physical channels and to support
3997  * ROMB feature and non-disk devices.
3998  */
3999 static void
4000 mega_enum_raid_scsi(adapter_t *adapter)
4001 {
4002         unsigned char raw_mbox[sizeof(struct mbox_out)];
4003         mbox_t *mbox;
4004         int i;
4005
4006         mbox = (mbox_t *)raw_mbox;
4007
4008         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4009
4010         /*
4011          * issue command to find out what channels are raid/scsi
4012          */
4013         raw_mbox[0] = CHNL_CLASS;
4014         raw_mbox[2] = GET_CHNL_CLASS;
4015
4016         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4017
4018         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4019
4020         /*
4021          * Non-ROMB firmware fail this command, so all channels
4022          * must be shown RAID
4023          */
4024         adapter->mega_ch_class = 0xFF;
4025
4026         if(!issue_scb_block(adapter, raw_mbox)) {
4027                 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4028
4029         }
4030
4031         for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4032                 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4033                         printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4034                                         i);
4035                 }
4036                 else {
4037                         printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4038                                         i);
4039                 }
4040         }
4041
4042         return;
4043 }
4044
4045
4046 /**
4047  * mega_get_boot_drv()
4048  * @adapter - pointer to our soft state
4049  *
4050  * Find out which device is the boot device. Note, any logical drive or any
4051  * phyical device (e.g., a CDROM) can be designated as a boot device.
4052  */
4053 static void
4054 mega_get_boot_drv(adapter_t *adapter)
4055 {
4056         struct private_bios_data        *prv_bios_data;
4057         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4058         mbox_t  *mbox;
4059         u16     cksum = 0;
4060         u8      *cksum_p;
4061         u8      boot_pdrv;
4062         int     i;
4063
4064         mbox = (mbox_t *)raw_mbox;
4065
4066         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4067
4068         raw_mbox[0] = BIOS_PVT_DATA;
4069         raw_mbox[2] = GET_BIOS_PVT_DATA;
4070
4071         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4072
4073         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4074
4075         adapter->boot_ldrv_enabled = 0;
4076         adapter->boot_ldrv = 0;
4077
4078         adapter->boot_pdrv_enabled = 0;
4079         adapter->boot_pdrv_ch = 0;
4080         adapter->boot_pdrv_tgt = 0;
4081
4082         if(issue_scb_block(adapter, raw_mbox) == 0) {
4083                 prv_bios_data =
4084                         (struct private_bios_data *)adapter->mega_buffer;
4085
4086                 cksum = 0;
4087                 cksum_p = (char *)prv_bios_data;
4088                 for (i = 0; i < 14; i++ ) {
4089                         cksum += (u16)(*cksum_p++);
4090                 }
4091
4092                 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4093
4094                         /*
4095                          * If MSB is set, a physical drive is set as boot
4096                          * device
4097                          */
4098                         if( prv_bios_data->boot_drv & 0x80 ) {
4099                                 adapter->boot_pdrv_enabled = 1;
4100                                 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4101                                 adapter->boot_pdrv_ch = boot_pdrv / 16;
4102                                 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4103                         }
4104                         else {
4105                                 adapter->boot_ldrv_enabled = 1;
4106                                 adapter->boot_ldrv = prv_bios_data->boot_drv;
4107                         }
4108                 }
4109         }
4110
4111 }
4112
4113 /**
4114  * mega_support_random_del()
4115  * @adapter - pointer to our soft state
4116  *
4117  * Find out if this controller supports random deletion and addition of
4118  * logical drives
4119  */
4120 static int
4121 mega_support_random_del(adapter_t *adapter)
4122 {
4123         unsigned char raw_mbox[sizeof(struct mbox_out)];
4124         mbox_t *mbox;
4125         int rval;
4126
4127         mbox = (mbox_t *)raw_mbox;
4128
4129         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4130
4131         /*
4132          * issue command
4133          */
4134         raw_mbox[0] = FC_DEL_LOGDRV;
4135         raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4136
4137         rval = issue_scb_block(adapter, raw_mbox);
4138
4139         return !rval;
4140 }
4141
4142
4143 /**
4144  * mega_support_ext_cdb()
4145  * @adapter - pointer to our soft state
4146  *
4147  * Find out if this firmware support cdblen > 10
4148  */
4149 static int
4150 mega_support_ext_cdb(adapter_t *adapter)
4151 {
4152         unsigned char raw_mbox[sizeof(struct mbox_out)];
4153         mbox_t *mbox;
4154         int rval;
4155
4156         mbox = (mbox_t *)raw_mbox;
4157
4158         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4159         /*
4160          * issue command to find out if controller supports extended CDBs.
4161          */
4162         raw_mbox[0] = 0xA4;
4163         raw_mbox[2] = 0x16;
4164
4165         rval = issue_scb_block(adapter, raw_mbox);
4166
4167         return !rval;
4168 }
4169
4170
4171 /**
4172  * mega_del_logdrv()
4173  * @adapter - pointer to our soft state
4174  * @logdrv - logical drive to be deleted
4175  *
4176  * Delete the specified logical drive. It is the responsibility of the user
4177  * app to let the OS know about this operation.
4178  */
4179 static int
4180 mega_del_logdrv(adapter_t *adapter, int logdrv)
4181 {
4182         unsigned long flags;
4183         scb_t *scb;
4184         int rval;
4185
4186         /*
4187          * Stop sending commands to the controller, queue them internally.
4188          * When deletion is complete, ISR will flush the queue.
4189          */
4190         atomic_set(&adapter->quiescent, 1);
4191
4192         /*
4193          * Wait till all the issued commands are complete and there are no
4194          * commands in the pending queue
4195          */
4196         while (atomic_read(&adapter->pend_cmds) > 0 ||
4197                !list_empty(&adapter->pending_list))
4198                 msleep(1000);   /* sleep for 1s */
4199
4200         rval = mega_do_del_logdrv(adapter, logdrv);
4201
4202         spin_lock_irqsave(&adapter->lock, flags);
4203
4204         /*
4205          * If delete operation was successful, add 0x80 to the logical drive
4206          * ids for commands in the pending queue.
4207          */
4208         if (adapter->read_ldidmap) {
4209                 struct list_head *pos;
4210                 list_for_each(pos, &adapter->pending_list) {
4211                         scb = list_entry(pos, scb_t, list);
4212                         if (scb->pthru->logdrv < 0x80 )
4213                                 scb->pthru->logdrv += 0x80;
4214                 }
4215         }
4216
4217         atomic_set(&adapter->quiescent, 0);
4218
4219         mega_runpendq(adapter);
4220
4221         spin_unlock_irqrestore(&adapter->lock, flags);
4222
4223         return rval;
4224 }
4225
4226
4227 static int
4228 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4229 {
4230         megacmd_t       mc;
4231         int     rval;
4232
4233         memset( &mc, 0, sizeof(megacmd_t));
4234
4235         mc.cmd = FC_DEL_LOGDRV;
4236         mc.opcode = OP_DEL_LOGDRV;
4237         mc.subopcode = logdrv;
4238
4239         rval = mega_internal_command(adapter, &mc, NULL);
4240
4241         /* log this event */
4242         if(rval) {
4243                 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4244                 return rval;
4245         }
4246
4247         /*
4248          * After deleting first logical drive, the logical drives must be
4249          * addressed by adding 0x80 to the logical drive id.
4250          */
4251         adapter->read_ldidmap = 1;
4252
4253         return rval;
4254 }
4255
4256
4257 /**
4258  * mega_get_max_sgl()
4259  * @adapter - pointer to our soft state
4260  *
4261  * Find out the maximum number of scatter-gather elements supported by this
4262  * version of the firmware
4263  */
4264 static void
4265 mega_get_max_sgl(adapter_t *adapter)
4266 {
4267         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4268         mbox_t  *mbox;
4269
4270         mbox = (mbox_t *)raw_mbox;
4271
4272         memset(mbox, 0, sizeof(raw_mbox));
4273
4274         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4275
4276         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4277
4278         raw_mbox[0] = MAIN_MISC_OPCODE;
4279         raw_mbox[2] = GET_MAX_SG_SUPPORT;
4280
4281
4282         if( issue_scb_block(adapter, raw_mbox) ) {
4283                 /*
4284                  * f/w does not support this command. Choose the default value
4285                  */
4286                 adapter->sglen = MIN_SGLIST;
4287         }
4288         else {
4289                 adapter->sglen = *((char *)adapter->mega_buffer);
4290
4291                 /*
4292                  * Make sure this is not more than the resources we are
4293                  * planning to allocate
4294                  */
4295                 if ( adapter->sglen > MAX_SGLIST )
4296                         adapter->sglen = MAX_SGLIST;
4297         }
4298
4299         return;
4300 }
4301
4302
4303 /**
4304  * mega_support_cluster()
4305  * @adapter - pointer to our soft state
4306  *
4307  * Find out if this firmware support cluster calls.
4308  */
4309 static int
4310 mega_support_cluster(adapter_t *adapter)
4311 {
4312         unsigned char   raw_mbox[sizeof(struct mbox_out)];
4313         mbox_t  *mbox;
4314
4315         mbox = (mbox_t *)raw_mbox;
4316
4317         memset(mbox, 0, sizeof(raw_mbox));
4318
4319         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4320
4321         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4322
4323         /*
4324          * Try to get the initiator id. This command will succeed iff the
4325          * clustering is available on this HBA.
4326          */
4327         raw_mbox[0] = MEGA_GET_TARGET_ID;
4328
4329         if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4330
4331                 /*
4332                  * Cluster support available. Get the initiator target id.
4333                  * Tell our id to mid-layer too.
4334                  */
4335                 adapter->this_id = *(u32 *)adapter->mega_buffer;
4336                 adapter->host->this_id = adapter->this_id;
4337
4338                 return 1;
4339         }
4340
4341         return 0;
4342 }
4343
4344
4345 /**
4346  * mega_adapinq()
4347  * @adapter - pointer to our soft state
4348  * @dma_handle - DMA address of the buffer
4349  *
4350  * Issue internal comamnds while interrupts are available.
4351  * We only issue direct mailbox commands from within the driver. ioctl()
4352  * interface using these routines can issue passthru commands.
4353  */
4354 static int
4355 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4356 {
4357         megacmd_t       mc;
4358
4359         memset(&mc, 0, sizeof(megacmd_t));
4360
4361         if( adapter->flag & BOARD_40LD ) {
4362                 mc.cmd = FC_NEW_CONFIG;
4363                 mc.opcode = NC_SUBOP_ENQUIRY3;
4364                 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4365         }
4366         else {
4367                 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4368         }
4369
4370         mc.xferaddr = (u32)dma_handle;
4371
4372         if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4373                 return -1;
4374         }
4375
4376         return 0;
4377 }
4378
4379
4380 /** mega_internal_dev_inquiry()
4381  * @adapter - pointer to our soft state
4382  * @ch - channel for this device
4383  * @tgt - ID of this device
4384  * @buf_dma_handle - DMA address of the buffer
4385  *
4386  * Issue the scsi inquiry for the specified device.
4387  */
4388 static int
4389 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4390                 dma_addr_t buf_dma_handle)
4391 {
4392         mega_passthru   *pthru;
4393         dma_addr_t      pthru_dma_handle;
4394         megacmd_t       mc;
4395         int             rval;
4396         struct pci_dev  *pdev;
4397
4398
4399         /*
4400          * For all internal commands, the buffer must be allocated in <4GB
4401          * address range
4402          */
4403         if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4404
4405         pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4406                         &pthru_dma_handle);
4407
4408         if( pthru == NULL ) {
4409                 free_local_pdev(pdev);
4410                 return -1;
4411         }
4412
4413         pthru->timeout = 2;
4414         pthru->ars = 1;
4415         pthru->reqsenselen = 14;
4416         pthru->islogical = 0;
4417
4418         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4419
4420         pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4421
4422         pthru->cdblen = 6;
4423
4424         pthru->cdb[0] = INQUIRY;
4425         pthru->cdb[1] = 0;
4426         pthru->cdb[2] = 0;
4427         pthru->cdb[3] = 0;
4428         pthru->cdb[4] = 255;
4429         pthru->cdb[5] = 0;
4430
4431
4432         pthru->dataxferaddr = (u32)buf_dma_handle;
4433         pthru->dataxferlen = 256;
4434
4435         memset(&mc, 0, sizeof(megacmd_t));
4436
4437         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4438         mc.xferaddr = (u32)pthru_dma_handle;
4439
4440         rval = mega_internal_command(adapter, &mc, pthru);
4441
4442         pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4443                         pthru_dma_handle);
4444
4445         free_local_pdev(pdev);
4446
4447         return rval;
4448 }
4449
4450
4451 /**
4452  * mega_internal_command()
4453  * @adapter - pointer to our soft state
4454  * @mc - the mailbox command
4455  * @pthru - Passthru structure for DCDB commands
4456  *
4457  * Issue the internal commands in interrupt mode.
4458  * The last argument is the address of the passthru structure if the command
4459  * to be fired is a passthru command
4460  *
4461  * lockscope specifies whether the caller has already acquired the lock. Of
4462  * course, the caller must know which lock we are talking about.
4463  *
4464  * Note: parameter 'pthru' is null for non-passthru commands.
4465  */
4466 static int
4467 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4468 {
4469         Scsi_Cmnd       *scmd;
4470         struct  scsi_device *sdev;
4471         scb_t   *scb;
4472         int     rval;
4473
4474         /*
4475          * The internal commands share one command id and hence are
4476          * serialized. This is so because we want to reserve maximum number of
4477          * available command ids for the I/O commands.
4478          */
4479         mutex_lock(&adapter->int_mtx);
4480
4481         scb = &adapter->int_scb;
4482         memset(scb, 0, sizeof(scb_t));
4483
4484         scmd = &adapter->int_scmd;
4485         memset(scmd, 0, sizeof(Scsi_Cmnd));
4486
4487         sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4488         memset(sdev, 0, sizeof(struct scsi_device));
4489         scmd->device = sdev;
4490
4491         scmd->device->host = adapter->host;
4492         scmd->request_buffer = (void *)scb;
4493         scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4494
4495         scb->state |= SCB_ACTIVE;
4496         scb->cmd = scmd;
4497
4498         memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4499
4500         /*
4501          * Is it a passthru command
4502          */
4503         if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4504
4505                 scb->pthru = pthru;
4506         }
4507
4508         scb->idx = CMDID_INT_CMDS;
4509
4510         megaraid_queue(scmd, mega_internal_done);
4511
4512         wait_for_completion(&adapter->int_waitq);
4513
4514         rval = scmd->result;
4515         mc->status = scmd->result;
4516         kfree(sdev);
4517
4518         /*
4519          * Print a debug message for all failed commands. Applications can use
4520          * this information.
4521          */
4522         if( scmd->result && trace_level ) {
4523                 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4524                         mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4525         }
4526
4527         mutex_unlock(&adapter->int_mtx);
4528
4529         return rval;
4530 }
4531
4532
4533 /**
4534  * mega_internal_done()
4535  * @scmd - internal scsi command
4536  *
4537  * Callback routine for internal commands.
4538  */
4539 static void
4540 mega_internal_done(Scsi_Cmnd *scmd)
4541 {
4542         adapter_t       *adapter;
4543
4544         adapter = (adapter_t *)scmd->device->host->hostdata;
4545
4546         complete(&adapter->int_waitq);
4547
4548 }
4549
4550
4551 static struct scsi_host_template megaraid_template = {
4552         .module                         = THIS_MODULE,
4553         .name                           = "MegaRAID",
4554         .proc_name                      = "megaraid_legacy",
4555         .info                           = megaraid_info,
4556         .queuecommand                   = megaraid_queue,
4557         .bios_param                     = megaraid_biosparam,
4558         .max_sectors                    = MAX_SECTORS_PER_IO,
4559         .can_queue                      = MAX_COMMANDS,
4560         .this_id                        = DEFAULT_INITIATOR_ID,
4561         .sg_tablesize                   = MAX_SGLIST,
4562         .cmd_per_lun                    = DEF_CMD_PER_LUN,
4563         .use_clustering                 = ENABLE_CLUSTERING,
4564         .eh_abort_handler               = megaraid_abort,
4565         .eh_device_reset_handler        = megaraid_reset,
4566         .eh_bus_reset_handler           = megaraid_reset,
4567         .eh_host_reset_handler          = megaraid_reset,
4568 };
4569
4570 static int __devinit
4571 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4572 {
4573         struct Scsi_Host *host;
4574         adapter_t *adapter;
4575         unsigned long mega_baseport, tbase, flag = 0;
4576         u16 subsysid, subsysvid;
4577         u8 pci_bus, pci_dev_func;
4578         int irq, i, j;
4579         int error = -ENODEV;
4580
4581         if (pci_enable_device(pdev))
4582                 goto out;
4583         pci_set_master(pdev);
4584
4585         pci_bus = pdev->bus->number;
4586         pci_dev_func = pdev->devfn;
4587
4588         /*
4589          * The megaraid3 stuff reports the ID of the Intel part which is not
4590          * remotely specific to the megaraid
4591          */
4592         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4593                 u16 magic;
4594                 /*
4595                  * Don't fall over the Compaq management cards using the same
4596                  * PCI identifier
4597                  */
4598                 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4599                     pdev->subsystem_device == 0xC000)
4600                         return -ENODEV;
4601                 /* Now check the magic signature byte */
4602                 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4603                 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4604                         return -ENODEV;
4605                 /* Ok it is probably a megaraid */
4606         }
4607
4608         /*
4609          * For these vendor and device ids, signature offsets are not
4610          * valid and 64 bit is implicit
4611          */
4612         if (id->driver_data & BOARD_64BIT)
4613                 flag |= BOARD_64BIT;
4614         else {
4615                 u32 magic64;
4616
4617                 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4618                 if (magic64 == HBA_SIGNATURE_64BIT)
4619                         flag |= BOARD_64BIT;
4620         }
4621
4622         subsysvid = pdev->subsystem_vendor;
4623         subsysid = pdev->subsystem_device;
4624
4625         printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4626                 id->vendor, id->device, pci_bus);
4627
4628         printk("slot %d:func %d\n",
4629                 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4630
4631         /* Read the base port and IRQ from PCI */
4632         mega_baseport = pci_resource_start(pdev, 0);
4633         irq = pdev->irq;
4634
4635         tbase = mega_baseport;
4636         if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4637                 flag |= BOARD_MEMMAP;
4638
4639                 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4640                         printk(KERN_WARNING "megaraid: mem region busy!\n");
4641                         goto out_disable_device;
4642                 }
4643
4644                 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4645                 if (!mega_baseport) {
4646                         printk(KERN_WARNING
4647                                "megaraid: could not map hba memory\n");
4648                         goto out_release_region;
4649                 }
4650         } else {
4651                 flag |= BOARD_IOMAP;
4652                 mega_baseport += 0x10;
4653
4654                 if (!request_region(mega_baseport, 16, "megaraid"))
4655                         goto out_disable_device;
4656         }
4657
4658         /* Initialize SCSI Host structure */
4659         host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4660         if (!host)
4661                 goto out_iounmap;
4662
4663         adapter = (adapter_t *)host->hostdata;
4664         memset(adapter, 0, sizeof(adapter_t));
4665
4666         printk(KERN_NOTICE
4667                 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4668                 host->host_no, mega_baseport, irq);
4669
4670         adapter->base = mega_baseport;
4671
4672         INIT_LIST_HEAD(&adapter->free_list);
4673         INIT_LIST_HEAD(&adapter->pending_list);
4674         INIT_LIST_HEAD(&adapter->completed_list);
4675
4676         adapter->flag = flag;
4677         spin_lock_init(&adapter->lock);
4678
4679         host->cmd_per_lun = max_cmd_per_lun;
4680         host->max_sectors = max_sectors_per_io;
4681
4682         adapter->dev = pdev;
4683         adapter->host = host;
4684
4685         adapter->host->irq = irq;
4686
4687         if (flag & BOARD_MEMMAP)
4688                 adapter->host->base = tbase;
4689         else {
4690                 adapter->host->io_port = tbase;
4691                 adapter->host->n_io_port = 16;
4692         }
4693
4694         adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4695
4696         /*
4697          * Allocate buffer to issue internal commands.
4698          */
4699         adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4700                 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4701         if (!adapter->mega_buffer) {
4702                 printk(KERN_WARNING "megaraid: out of RAM.\n");
4703                 goto out_host_put;
4704         }
4705
4706         adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4707         if (!adapter->scb_list) {
4708                 printk(KERN_WARNING "megaraid: out of RAM.\n");
4709                 goto out_free_cmd_buffer;
4710         }
4711
4712         if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4713                                 megaraid_isr_memmapped : megaraid_isr_iomapped,
4714                                         IRQF_SHARED, "megaraid", adapter)) {
4715                 printk(KERN_WARNING
4716                         "megaraid: Couldn't register IRQ %d!\n", irq);
4717                 goto out_free_scb_list;
4718         }
4719
4720         if (mega_setup_mailbox(adapter))
4721                 goto out_free_irq;
4722
4723         if (mega_query_adapter(adapter))
4724                 goto out_free_mbox;
4725
4726         /*
4727          * Have checks for some buggy f/w
4728          */
4729         if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4730                 /*
4731                  * Which firmware
4732                  */
4733                 if (!strcmp(adapter->fw_version, "3.00") ||
4734                                 !strcmp(adapter->fw_version, "3.01")) {
4735
4736                         printk( KERN_WARNING
4737                                 "megaraid: Your  card is a Dell PERC "
4738                                 "2/SC RAID controller with  "
4739                                 "firmware\nmegaraid: 3.00 or 3.01.  "
4740                                 "This driver is known to have "
4741                                 "corruption issues\nmegaraid: with "
4742                                 "those firmware versions on this "
4743                                 "specific card.  In order\nmegaraid: "
4744                                 "to protect your data, please upgrade "
4745                                 "your firmware to version\nmegaraid: "
4746                                 "3.10 or later, available from the "
4747                                 "Dell Technical Support web\n"
4748                                 "megaraid: site at\nhttp://support."
4749                                 "dell.com/us/en/filelib/download/"
4750                                 "index.asp?fileid=2940\n"
4751                         );
4752                 }
4753         }
4754
4755         /*
4756          * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4757          * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4758          * support, since this firmware cannot handle 64 bit
4759          * addressing
4760          */
4761         if ((subsysvid == HP_SUBSYS_VID) &&
4762             ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4763                 /*
4764                  * which firmware
4765                  */
4766                 if (!strcmp(adapter->fw_version, "H01.07") ||
4767                     !strcmp(adapter->fw_version, "H01.08") ||
4768                     !strcmp(adapter->fw_version, "H01.09") ) {
4769                         printk(KERN_WARNING
4770                                 "megaraid: Firmware H.01.07, "
4771                                 "H.01.08, and H.01.09 on 1M/2M "
4772                                 "controllers\n"
4773                                 "megaraid: do not support 64 bit "
4774                                 "addressing.\nmegaraid: DISABLING "
4775                                 "64 bit support.\n");
4776                         adapter->flag &= ~BOARD_64BIT;
4777                 }
4778         }
4779
4780         if (mega_is_bios_enabled(adapter))
4781                 mega_hbas[hba_count].is_bios_enabled = 1;
4782         mega_hbas[hba_count].hostdata_addr = adapter;
4783
4784         /*
4785          * Find out which channel is raid and which is scsi. This is
4786          * for ROMB support.
4787          */
4788         mega_enum_raid_scsi(adapter);
4789
4790         /*
4791          * Find out if a logical drive is set as the boot drive. If
4792          * there is one, will make that as the first logical drive.
4793          * ROMB: Do we have to boot from a physical drive. Then all
4794          * the physical drives would appear before the logical disks.
4795          * Else, all the physical drives would be exported to the mid
4796          * layer after logical drives.
4797          */
4798         mega_get_boot_drv(adapter);
4799
4800         if (adapter->boot_pdrv_enabled) {
4801                 j = adapter->product_info.nchannels;
4802                 for( i = 0; i < j; i++ )
4803                         adapter->logdrv_chan[i] = 0;
4804                 for( i = j; i < NVIRT_CHAN + j; i++ )
4805                         adapter->logdrv_chan[i] = 1;
4806         } else {
4807                 for (i = 0; i < NVIRT_CHAN; i++)
4808                         adapter->logdrv_chan[i] = 1;
4809                 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4810                         adapter->logdrv_chan[i] = 0;
4811                 adapter->mega_ch_class <<= NVIRT_CHAN;
4812         }
4813
4814         /*
4815          * Do we support random deletion and addition of logical
4816          * drives
4817          */
4818         adapter->read_ldidmap = 0;      /* set it after first logdrv
4819                                                    delete cmd */
4820         adapter->support_random_del = mega_support_random_del(adapter);
4821
4822         /* Initialize SCBs */
4823         if (mega_init_scb(adapter))
4824                 goto out_free_mbox;
4825
4826         /*
4827          * Reset the pending commands counter
4828          */
4829         atomic_set(&adapter->pend_cmds, 0);
4830
4831         /*
4832          * Reset the adapter quiescent flag
4833          */
4834         atomic_set(&adapter->quiescent, 0);
4835
4836         hba_soft_state[hba_count] = adapter;
4837
4838         /*
4839          * Fill in the structure which needs to be passed back to the
4840          * application when it does an ioctl() for controller related
4841          * information.
4842          */
4843         i = hba_count;
4844
4845         mcontroller[i].base = mega_baseport;
4846         mcontroller[i].irq = irq;
4847         mcontroller[i].numldrv = adapter->numldrv;
4848         mcontroller[i].pcibus = pci_bus;
4849         mcontroller[i].pcidev = id->device;
4850         mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4851         mcontroller[i].pciid = -1;
4852         mcontroller[i].pcivendor = id->vendor;
4853         mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4854         mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4855
4856
4857         /* Set the Mode of addressing to 64 bit if we can */
4858         if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4859                 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4860                 adapter->has_64bit_addr = 1;
4861         } else  {
4862                 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4863                 adapter->has_64bit_addr = 0;
4864         }
4865
4866         mutex_init(&adapter->int_mtx);
4867         init_completion(&adapter->int_waitq);
4868
4869         adapter->this_id = DEFAULT_INITIATOR_ID;
4870         adapter->host->this_id = DEFAULT_INITIATOR_ID;
4871
4872 #if MEGA_HAVE_CLUSTERING
4873         /*
4874          * Is cluster support enabled on this controller
4875          * Note: In a cluster the HBAs ( the initiators ) will have
4876          * different target IDs and we cannot assume it to be 7. Call
4877          * to mega_support_cluster() will get the target ids also if
4878          * the cluster support is available
4879          */
4880         adapter->has_cluster = mega_support_cluster(adapter);
4881         if (adapter->has_cluster) {
4882                 printk(KERN_NOTICE
4883                         "megaraid: Cluster driver, initiator id:%d\n",
4884                         adapter->this_id);
4885         }
4886 #endif
4887
4888         pci_set_drvdata(pdev, host);
4889
4890         mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4891
4892         error = scsi_add_host(host, &pdev->dev);
4893         if (error)
4894                 goto out_free_mbox;
4895
4896         scsi_scan_host(host);
4897         hba_count++;
4898         return 0;
4899
4900  out_free_mbox:
4901         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4902                         adapter->una_mbox64, adapter->una_mbox64_dma);
4903  out_free_irq:
4904         free_irq(adapter->host->irq, adapter);
4905  out_free_scb_list:
4906         kfree(adapter->scb_list);
4907  out_free_cmd_buffer:
4908         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4909                         adapter->mega_buffer, adapter->buf_dma_handle);
4910  out_host_put:
4911         scsi_host_put(host);
4912  out_iounmap:
4913         if (flag & BOARD_MEMMAP)
4914                 iounmap((void *)mega_baseport);
4915  out_release_region:
4916         if (flag & BOARD_MEMMAP)
4917                 release_mem_region(tbase, 128);
4918         else
4919                 release_region(mega_baseport, 16);
4920  out_disable_device:
4921         pci_disable_device(pdev);
4922  out:
4923         return error;
4924 }
4925
4926 static void
4927 __megaraid_shutdown(adapter_t *adapter)
4928 {
4929         u_char  raw_mbox[sizeof(struct mbox_out)];
4930         mbox_t  *mbox = (mbox_t *)raw_mbox;
4931         int     i;
4932
4933         /* Flush adapter cache */
4934         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4935         raw_mbox[0] = FLUSH_ADAPTER;
4936
4937         free_irq(adapter->host->irq, adapter);
4938
4939         /* Issue a blocking (interrupts disabled) command to the card */
4940         issue_scb_block(adapter, raw_mbox);
4941
4942         /* Flush disks cache */
4943         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4944         raw_mbox[0] = FLUSH_SYSTEM;
4945
4946         /* Issue a blocking (interrupts disabled) command to the card */
4947         issue_scb_block(adapter, raw_mbox);
4948
4949         if (atomic_read(&adapter->pend_cmds) > 0)
4950                 printk(KERN_WARNING "megaraid: pending commands!!\n");
4951
4952         /*
4953          * Have a delibrate delay to make sure all the caches are
4954          * actually flushed.
4955          */
4956         for (i = 0; i <= 10; i++)
4957                 mdelay(1000);
4958 }
4959
4960 static void
4961 megaraid_remove_one(struct pci_dev *pdev)
4962 {
4963         struct Scsi_Host *host = pci_get_drvdata(pdev);
4964         adapter_t *adapter = (adapter_t *)host->hostdata;
4965         char    buf[12] = { 0 };
4966
4967         scsi_remove_host(host);
4968
4969         __megaraid_shutdown(adapter);
4970
4971         /* Free our resources */
4972         if (adapter->flag & BOARD_MEMMAP) {
4973                 iounmap((void *)adapter->base);
4974                 release_mem_region(adapter->host->base, 128);
4975         } else
4976                 release_region(adapter->base, 16);
4977
4978         mega_free_sgl(adapter);
4979
4980 #ifdef CONFIG_PROC_FS
4981         if (adapter->controller_proc_dir_entry) {
4982                 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4983                 remove_proc_entry("config",
4984                                 adapter->controller_proc_dir_entry);
4985                 remove_proc_entry("mailbox",
4986                                 adapter->controller_proc_dir_entry);
4987 #if MEGA_HAVE_ENH_PROC
4988                 remove_proc_entry("rebuild-rate",
4989                                 adapter->controller_proc_dir_entry);
4990                 remove_proc_entry("battery-status",
4991                                 adapter->controller_proc_dir_entry);
4992
4993                 remove_proc_entry("diskdrives-ch0",
4994                                 adapter->controller_proc_dir_entry);
4995                 remove_proc_entry("diskdrives-ch1",
4996                                 adapter->controller_proc_dir_entry);
4997                 remove_proc_entry("diskdrives-ch2",
4998                                 adapter->controller_proc_dir_entry);
4999                 remove_proc_entry("diskdrives-ch3",
5000                                 adapter->controller_proc_dir_entry);
5001
5002                 remove_proc_entry("raiddrives-0-9",
5003                                 adapter->controller_proc_dir_entry);
5004                 remove_proc_entry("raiddrives-10-19",
5005                                 adapter->controller_proc_dir_entry);
5006                 remove_proc_entry("raiddrives-20-29",
5007                                 adapter->controller_proc_dir_entry);
5008                 remove_proc_entry("raiddrives-30-39",
5009                                 adapter->controller_proc_dir_entry);
5010 #endif
5011                 sprintf(buf, "hba%d", adapter->host->host_no);
5012                 remove_proc_entry(buf, mega_proc_dir_entry);
5013         }
5014 #endif
5015
5016         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5017                         adapter->mega_buffer, adapter->buf_dma_handle);
5018         kfree(adapter->scb_list);
5019         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5020                         adapter->una_mbox64, adapter->una_mbox64_dma);
5021
5022         scsi_host_put(host);
5023         pci_disable_device(pdev);
5024
5025         hba_count--;
5026 }
5027
5028 static void
5029 megaraid_shutdown(struct pci_dev *pdev)
5030 {
5031         struct Scsi_Host *host = pci_get_drvdata(pdev);
5032         adapter_t *adapter = (adapter_t *)host->hostdata;
5033
5034         __megaraid_shutdown(adapter);
5035 }
5036
5037 static struct pci_device_id megaraid_pci_tbl[] = {
5038         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5039                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5040         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5041                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5042         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5043                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5044         {0,}
5045 };
5046 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5047
5048 static struct pci_driver megaraid_pci_driver = {
5049         .name           = "megaraid_legacy",
5050         .id_table       = megaraid_pci_tbl,
5051         .probe          = megaraid_probe_one,
5052         .remove         = __devexit_p(megaraid_remove_one),
5053         .shutdown       = megaraid_shutdown,
5054 };
5055
5056 static int __init megaraid_init(void)
5057 {
5058         int error;
5059
5060         if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5061                 max_cmd_per_lun = MAX_CMD_PER_LUN;
5062         if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5063                 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5064
5065 #ifdef CONFIG_PROC_FS
5066         mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5067         if (!mega_proc_dir_entry) {
5068                 printk(KERN_WARNING
5069                                 "megaraid: failed to create megaraid root\n");
5070         }
5071 #endif
5072         error = pci_module_init(&megaraid_pci_driver);
5073         if (error) {
5074 #ifdef CONFIG_PROC_FS
5075                 remove_proc_entry("megaraid", &proc_root);
5076 #endif
5077                 return error;
5078         }
5079
5080         /*
5081          * Register the driver as a character device, for applications
5082          * to access it for ioctls.
5083          * First argument (major) to register_chrdev implies a dynamic
5084          * major number allocation.
5085          */
5086         major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5087         if (!major) {
5088                 printk(KERN_WARNING
5089                                 "megaraid: failed to register char device\n");
5090         }
5091
5092         return 0;
5093 }
5094
5095 static void __exit megaraid_exit(void)
5096 {
5097         /*
5098          * Unregister the character device interface to the driver.
5099          */
5100         unregister_chrdev(major, "megadev_legacy");
5101
5102         pci_unregister_driver(&megaraid_pci_driver);
5103
5104 #ifdef CONFIG_PROC_FS
5105         remove_proc_entry("megaraid", &proc_root);
5106 #endif
5107 }
5108
5109 module_init(megaraid_init);
5110 module_exit(megaraid_exit);
5111
5112 /* vi: set ts=8 sw=8 tw=78: */