drivers/scsi/megaraid.c

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