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