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