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