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