drivers/scsi/megaraid.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *                      Linux MegaRAID device driver
   5  *
   6  * Copyright (c) 2002  LSI Logic Corporation.
   7  *
   8  * Copyright (c) 2002  Red Hat, Inc. All rights reserved.
   9  *        - fixes
  10  *        - speed-ups (list handling fixes, issued_list, optimizations.)
  11  *        - lots of cleanups.
  12  *
  13  * Copyright (c) 2003  Christoph Hellwig  <[email protected]>
  14  *        - new-style, hotplug-aware pci probing and scsi registration
  15  *
  16  * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
  17  *                                              <[email protected]>
  18  *
  19  * Description: Linux device driver for LSI Logic MegaRAID controller
  20  *
  21  * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
  22  *                                      518, 520, 531, 532
  23  *
  24  * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
  25  * and others. Please send updates to the mailing list
  26  * [email protected] .
  27  */
  28
  29 #include <linux/mm.h>
  30 #include <linux/fs.h>
  31 #include <linux/blkdev.h>
  32 #include <linux/uaccess.h>
  33 #include <asm/io.h>
  34 #include <linux/completion.h>
  35 #include <linux/delay.h>
  36 #include <linux/proc_fs.h>
  37 #include <linux/seq_file.h>
  38 #include <linux/reboot.h>
  39 #include <linux/module.h>
  40 #include <linux/list.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/pci.h>
  43 #include <linux/init.h>
  44 #include <linux/dma-mapping.h>
  45 #include <linux/mutex.h>
  46 #include <linux/slab.h>
  47 #include <scsi/scsicam.h>
  48
  49 #include "scsi.h"
  50 #include <scsi/scsi_host.h>
  51
  52 #include "megaraid.h"
  53
  54 #define MEGARAID_MODULE_VERSION "2.00.4"
  55
  56 MODULE_AUTHOR ("[email protected]");
  57 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
  58 MODULE_LICENSE ("GPL");
  59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
  60
  61 static DEFINE_MUTEX(megadev_mutex);
  62 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
  63 module_param(max_cmd_per_lun, uint, 0);
  64 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
  65
  66 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
  67 module_param(max_sectors_per_io, ushort, 0);
  68 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
  69
  70
  71 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
  72 module_param(max_mbox_busy_wait, ushort, 0);
  73 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
  74
  75 #define RDINDOOR(adapter)       readl((adapter)->mmio_base + 0x20)
  76 #define RDOUTDOOR(adapter)      readl((adapter)->mmio_base + 0x2C)
  77 #define WRINDOOR(adapter,value)  writel(value, (adapter)->mmio_base + 0x20)
  78 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
  79
  80 /*
  81  * Global variables
  82  */
  83
  84 static int hba_count;
  85 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
  86 static struct proc_dir_entry *mega_proc_dir_entry;
  87
  88 /* For controller re-ordering */
  89 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
  90
  91 static long
  92 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
  93
  94 /*
  95  * The File Operations structure for the serial/ioctl interface of the driver
  96  */
  97 static const struct file_operations megadev_fops = {
  98         .owner          = THIS_MODULE,
  99         .unlocked_ioctl = megadev_unlocked_ioctl,
 100         .open           = megadev_open,
 101         .llseek         = noop_llseek,
 102 };
 103
 104 /*
 105  * Array to structures for storing the information about the controllers. This
 106  * information is sent to the user level applications, when they do an ioctl
 107  * for this information.
 108  */
 109 static struct mcontroller mcontroller[MAX_CONTROLLERS];
 110
 111 /* The current driver version */
 112 static u32 driver_ver = 0x02000000;
 113
 114 /* major number used by the device for character interface */
 115 static int major;
 116
 117 #define IS_RAID_CH(hba, ch)     (((hba)->mega_ch_class >> (ch)) & 0x01)
 118
 119
 120 /*
 121  * Debug variable to print some diagnostic messages
 122  */
 123 static int trace_level;
 124
 125 /**
 126  * mega_setup_mailbox()
 127  * @adapter: pointer to our soft state
 128  *
 129  * Allocates a 8 byte aligned memory for the handshake mailbox.
 130  */
 131 static int
 132 mega_setup_mailbox(adapter_t *adapter)
 133 {
 134         unsigned long   align;
 135
 136         adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
 137                         sizeof(mbox64_t), &adapter->una_mbox64_dma);
 138
 139         if( !adapter->una_mbox64 ) return -1;
 140
 141         adapter->mbox = &adapter->una_mbox64->mbox;
 142
 143         adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
 144                         (~0UL ^ 0xFUL));
 145
 146         adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
 147
 148         align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
 149
 150         adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
 151
 152         /*
 153          * Register the mailbox if the controller is an io-mapped controller
 154          */
 155         if( adapter->flag & BOARD_IOMAP ) {
 156
 157                 outb(adapter->mbox_dma & 0xFF,
 158                                 adapter->host->io_port + MBOX_PORT0);
 159
 160                 outb((adapter->mbox_dma >> 8) & 0xFF,
 161                                 adapter->host->io_port + MBOX_PORT1);
 162
 163                 outb((adapter->mbox_dma >> 16) & 0xFF,
 164                                 adapter->host->io_port + MBOX_PORT2);
 165
 166                 outb((adapter->mbox_dma >> 24) & 0xFF,
 167                                 adapter->host->io_port + MBOX_PORT3);
 168
 169                 outb(ENABLE_MBOX_BYTE,
 170                                 adapter->host->io_port + ENABLE_MBOX_REGION);
 171
 172                 irq_ack(adapter);
 173
 174                 irq_enable(adapter);
 175         }
 176
 177         return 0;
 178 }
 179
 180
 181 /*
 182  * mega_query_adapter()
 183  * @adapter - pointer to our soft state
 184  *
 185  * Issue the adapter inquiry commands to the controller and find out
 186  * information and parameter about the devices attached
 187  */
 188 static int
 189 mega_query_adapter(adapter_t *adapter)
 190 {
 191         dma_addr_t      prod_info_dma_handle;
 192         mega_inquiry3   *inquiry3;
 193         u8      raw_mbox[sizeof(struct mbox_out)];
 194         mbox_t  *mbox;
 195         int     retval;
 196
 197         /* Initialize adapter inquiry mailbox */
 198
 199         mbox = (mbox_t *)raw_mbox;
 200
 201         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
 202         memset(&mbox->m_out, 0, sizeof(raw_mbox));
 203
 204         /*
 205          * Try to issue Inquiry3 command
 206          * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
 207          * update enquiry3 structure
 208          */
 209         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
 210
 211         inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
 212
 213         raw_mbox[0] = FC_NEW_CONFIG;            /* i.e. mbox->cmd=0xA1 */
 214         raw_mbox[2] = NC_SUBOP_ENQUIRY3;        /* i.e. 0x0F */
 215         raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;  /* i.e. 0x02 */
 216
 217         /* Issue a blocking command to the card */
 218         if ((retval = issue_scb_block(adapter, raw_mbox))) {
 219                 /* the adapter does not support 40ld */
 220
 221                 mraid_ext_inquiry       *ext_inq;
 222                 mraid_inquiry           *inq;
 223                 dma_addr_t              dma_handle;
 224
 225                 ext_inq = pci_alloc_consistent(adapter->dev,
 226                                 sizeof(mraid_ext_inquiry), &dma_handle);
 227
 228                 if( ext_inq == NULL ) return -1;
 229
 230                 inq = &ext_inq->raid_inq;
 231
 232                 mbox->m_out.xferaddr = (u32)dma_handle;
 233
 234                 /*issue old 0x04 command to adapter */
 235                 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
 236
 237                 issue_scb_block(adapter, raw_mbox);
 238
 239                 /*
 240                  * update Enquiry3 and ProductInfo structures with
 241                  * mraid_inquiry structure
 242                  */
 243                 mega_8_to_40ld(inq, inquiry3,
 244                                 (mega_product_info *)&adapter->product_info);
 245
 246                 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
 247                                 ext_inq, dma_handle);
 248
 249         } else {                /*adapter supports 40ld */
 250                 adapter->flag |= BOARD_40LD;
 251
 252                 /*
 253                  * get product_info, which is static information and will be
 254                  * unchanged
 255                  */
 256                 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
 257                                 &adapter->product_info,
 258                                 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 259
 260                 mbox->m_out.xferaddr = prod_info_dma_handle;
 261
 262                 raw_mbox[0] = FC_NEW_CONFIG;    /* i.e. mbox->cmd=0xA1 */
 263                 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;    /* i.e. 0x0E */
 264
 265                 if ((retval = issue_scb_block(adapter, raw_mbox)))
 266                         dev_warn(&adapter->dev->dev,
 267                                 "Product_info cmd failed with error: %d\n",
 268                                 retval);
 269
 270                 pci_unmap_single(adapter->dev, prod_info_dma_handle,
 271                                 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 272         }
 273
 274
 275         /*
 276          * kernel scans the channels from 0 to <= max_channel
 277          */
 278         adapter->host->max_channel =
 279                 adapter->product_info.nchannels + NVIRT_CHAN -1;
 280
 281         adapter->host->max_id = 16;     /* max targets per channel */
 282
 283         adapter->host->max_lun = 7;     /* Up to 7 luns for non disk devices */
 284
 285         adapter->host->cmd_per_lun = max_cmd_per_lun;
 286
 287         adapter->numldrv = inquiry3->num_ldrv;
 288
 289         adapter->max_cmds = adapter->product_info.max_commands;
 290
 291         if(adapter->max_cmds > MAX_COMMANDS)
 292                 adapter->max_cmds = MAX_COMMANDS;
 293
 294         adapter->host->can_queue = adapter->max_cmds - 1;
 295
 296         /*
 297          * Get the maximum number of scatter-gather elements supported by this
 298          * firmware
 299          */
 300         mega_get_max_sgl(adapter);
 301
 302         adapter->host->sg_tablesize = adapter->sglen;
 303
 304         /* use HP firmware and bios version encoding
 305            Note: fw_version[0|1] and bios_version[0|1] were originally shifted
 306            right 8 bits making them zero. This 0 value was hardcoded to fix
 307            sparse warnings. */
 308         if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
 309                 snprintf(adapter->fw_version, sizeof(adapter->fw_version),
 310                          "%c%d%d.%d%d",
 311                          adapter->product_info.fw_version[2],
 312                          0,
 313                          adapter->product_info.fw_version[1] & 0x0f,
 314                          0,
 315                          adapter->product_info.fw_version[0] & 0x0f);
 316                 snprintf(adapter->bios_version, sizeof(adapter->fw_version),
 317                          "%c%d%d.%d%d",
 318                          adapter->product_info.bios_version[2],
 319                          0,
 320                          adapter->product_info.bios_version[1] & 0x0f,
 321                          0,
 322                          adapter->product_info.bios_version[0] & 0x0f);
 323         } else {
 324                 memcpy(adapter->fw_version,
 325                                 (char *)adapter->product_info.fw_version, 4);
 326                 adapter->fw_version[4] = 0;
 327
 328                 memcpy(adapter->bios_version,
 329                                 (char *)adapter->product_info.bios_version, 4);
 330
 331                 adapter->bios_version[4] = 0;
 332         }
 333
 334         dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
 335                 adapter->fw_version, adapter->bios_version, adapter->numldrv);
 336
 337         /*
 338          * Do we support extended (>10 bytes) cdbs
 339          */
 340         adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
 341         if (adapter->support_ext_cdb)
 342                 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
 343
 344
 345         return 0;
 346 }
 347
 348 /**
 349  * mega_runpendq()
 350  * @adapter: pointer to our soft state
 351  *
 352  * Runs through the list of pending requests.
 353  */
 354 static inline void
 355 mega_runpendq(adapter_t *adapter)
 356 {
 357         if(!list_empty(&adapter->pending_list))
 358                 __mega_runpendq(adapter);
 359 }
 360
 361 /*
 362  * megaraid_queue()
 363  * @scmd - Issue this scsi command
 364  * @done - the callback hook into the scsi mid-layer
 365  *
 366  * The command queuing entry point for the mid-layer.
 367  */
 368 static int
 369 megaraid_queue_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
 370 {
 371         adapter_t       *adapter;
 372         scb_t   *scb;
 373         int     busy=0;
 374         unsigned long flags;
 375
 376         adapter = (adapter_t *)scmd->device->host->hostdata;
 377
 378         scmd->scsi_done = done;
 379
 380
 381         /*
 382          * Allocate and build a SCB request
 383          * busy flag will be set if mega_build_cmd() command could not
 384          * allocate scb. We will return non-zero status in that case.
 385          * NOTE: scb can be null even though certain commands completed
 386          * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
 387          * return 0 in that case.
 388          */
 389
 390         spin_lock_irqsave(&adapter->lock, flags);
 391         scb = mega_build_cmd(adapter, scmd, &busy);
 392         if (!scb)
 393                 goto out;
 394
 395         scb->state |= SCB_PENDQ;
 396         list_add_tail(&scb->list, &adapter->pending_list);
 397
 398         /*
 399          * Check if the HBA is in quiescent state, e.g., during a
 400          * delete logical drive opertion. If it is, don't run
 401          * the pending_list.
 402          */
 403         if (atomic_read(&adapter->quiescent) == 0)
 404                 mega_runpendq(adapter);
 405
 406         busy = 0;
 407  out:
 408         spin_unlock_irqrestore(&adapter->lock, flags);
 409         return busy;
 410 }
 411
 412 static DEF_SCSI_QCMD(megaraid_queue)
 413
 414 /**
 415  * mega_allocate_scb()
 416  * @adapter: pointer to our soft state
 417  * @cmd: scsi command from the mid-layer
 418  *
 419  * Allocate a SCB structure. This is the central structure for controller
 420  * commands.
 421  */
 422 static inline scb_t *
 423 mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd)
 424 {
 425         struct list_head *head = &adapter->free_list;
 426         scb_t   *scb;
 427
 428         /* Unlink command from Free List */
 429         if( !list_empty(head) ) {
 430
 431                 scb = list_entry(head->next, scb_t, list);
 432
 433                 list_del_init(head->next);
 434
 435                 scb->state = SCB_ACTIVE;
 436                 scb->cmd = cmd;
 437                 scb->dma_type = MEGA_DMA_TYPE_NONE;
 438
 439                 return scb;
 440         }
 441
 442         return NULL;
 443 }
 444
 445 /**
 446  * mega_get_ldrv_num()
 447  * @adapter: pointer to our soft state
 448  * @cmd: scsi mid layer command
 449  * @channel: channel on the controller
 450  *
 451  * Calculate the logical drive number based on the information in scsi command
 452  * and the channel number.
 453  */
 454 static inline int
 455 mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel)
 456 {
 457         int             tgt;
 458         int             ldrv_num;
 459
 460         tgt = cmd->device->id;
 461
 462         if ( tgt > adapter->this_id )
 463                 tgt--;  /* we do not get inquires for initiator id */
 464
 465         ldrv_num = (channel * 15) + tgt;
 466
 467
 468         /*
 469          * If we have a logical drive with boot enabled, project it first
 470          */
 471         if( adapter->boot_ldrv_enabled ) {
 472                 if( ldrv_num == 0 ) {
 473                         ldrv_num = adapter->boot_ldrv;
 474                 }
 475                 else {
 476                         if( ldrv_num <= adapter->boot_ldrv ) {
 477                                 ldrv_num--;
 478                         }
 479                 }
 480         }
 481
 482         /*
 483          * If "delete logical drive" feature is enabled on this controller.
 484          * Do only if at least one delete logical drive operation was done.
 485          *
 486          * Also, after logical drive deletion, instead of logical drive number,
 487          * the value returned should be 0x80+logical drive id.
 488          *
 489          * These is valid only for IO commands.
 490          */
 491
 492         if (adapter->support_random_del && adapter->read_ldidmap )
 493                 switch (cmd->cmnd[0]) {
 494                 case READ_6:    /* fall through */
 495                 case WRITE_6:   /* fall through */
 496                 case READ_10:   /* fall through */
 497                 case WRITE_10:
 498                         ldrv_num += 0x80;
 499                 }
 500
 501         return ldrv_num;
 502 }
 503
 504 /**
 505  * mega_build_cmd()
 506  * @adapter: pointer to our soft state
 507  * @cmd: Prepare using this scsi command
 508  * @busy: busy flag if no resources
 509  *
 510  * Prepares a command and scatter gather list for the controller. This routine
 511  * also finds out if the commands is intended for a logical drive or a
 512  * physical device and prepares the controller command accordingly.
 513  *
 514  * We also re-order the logical drives and physical devices based on their
 515  * boot settings.
 516  */
 517 static scb_t *
 518 mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy)
 519 {
 520         mega_passthru   *pthru;
 521         scb_t   *scb;
 522         mbox_t  *mbox;
 523         u32     seg;
 524         char    islogical;
 525         int     max_ldrv_num;
 526         int     channel = 0;
 527         int     target = 0;
 528         int     ldrv_num = 0;   /* logical drive number */
 529
 530         /*
 531          * We know what channels our logical drives are on - mega_find_card()
 532          */
 533         islogical = adapter->logdrv_chan[cmd->device->channel];
 534
 535         /*
 536          * The theory: If physical drive is chosen for boot, all the physical
 537          * devices are exported before the logical drives, otherwise physical
 538          * devices are pushed after logical drives, in which case - Kernel sees
 539          * the physical devices on virtual channel which is obviously converted
 540          * to actual channel on the HBA.
 541          */
 542         if( adapter->boot_pdrv_enabled ) {
 543                 if( islogical ) {
 544                         /* logical channel */
 545                         channel = cmd->device->channel -
 546                                 adapter->product_info.nchannels;
 547                 }
 548                 else {
 549                         /* this is physical channel */
 550                         channel = cmd->device->channel;
 551                         target = cmd->device->id;
 552
 553                         /*
 554                          * boot from a physical disk, that disk needs to be
 555                          * exposed first IF both the channels are SCSI, then
 556                          * booting from the second channel is not allowed.
 557                          */
 558                         if( target == 0 ) {
 559                                 target = adapter->boot_pdrv_tgt;
 560                         }
 561                         else if( target == adapter->boot_pdrv_tgt ) {
 562                                 target = 0;
 563                         }
 564                 }
 565         }
 566         else {
 567                 if( islogical ) {
 568                         /* this is the logical channel */
 569                         channel = cmd->device->channel;
 570                 }
 571                 else {
 572                         /* physical channel */
 573                         channel = cmd->device->channel - NVIRT_CHAN;
 574                         target = cmd->device->id;
 575                 }
 576         }
 577
 578
 579         if(islogical) {
 580
 581                 /* have just LUN 0 for each target on virtual channels */
 582                 if (cmd->device->lun) {
 583                         cmd->result = (DID_BAD_TARGET << 16);
 584                         cmd->scsi_done(cmd);
 585                         return NULL;
 586                 }
 587
 588                 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
 589
 590
 591                 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
 592                         MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
 593
 594                 /*
 595                  * max_ldrv_num increases by 0x80 if some logical drive was
 596                  * deleted.
 597                  */
 598                 if(adapter->read_ldidmap)
 599                         max_ldrv_num += 0x80;
 600
 601                 if(ldrv_num > max_ldrv_num ) {
 602                         cmd->result = (DID_BAD_TARGET << 16);
 603                         cmd->scsi_done(cmd);
 604                         return NULL;
 605                 }
 606
 607         }
 608         else {
 609                 if( cmd->device->lun > 7) {
 610                         /*
 611                          * Do not support lun >7 for physically accessed
 612                          * devices
 613                          */
 614                         cmd->result = (DID_BAD_TARGET << 16);
 615                         cmd->scsi_done(cmd);
 616                         return NULL;
 617                 }
 618         }
 619
 620         /*
 621          *
 622          * Logical drive commands
 623          *
 624          */
 625         if(islogical) {
 626                 switch (cmd->cmnd[0]) {
 627                 case TEST_UNIT_READY:
 628 #if MEGA_HAVE_CLUSTERING
 629                         /*
 630                          * Do we support clustering and is the support enabled
 631                          * If no, return success always
 632                          */
 633                         if( !adapter->has_cluster ) {
 634                                 cmd->result = (DID_OK << 16);
 635                                 cmd->scsi_done(cmd);
 636                                 return NULL;
 637                         }
 638
 639                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 640                                 *busy = 1;
 641                                 return NULL;
 642                         }
 643
 644                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 645                         scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
 646                         scb->raw_mbox[3] = ldrv_num;
 647
 648                         scb->dma_direction = PCI_DMA_NONE;
 649
 650                         return scb;
 651 #else
 652                         cmd->result = (DID_OK << 16);
 653                         cmd->scsi_done(cmd);
 654                         return NULL;
 655 #endif
 656
 657                 case MODE_SENSE: {
 658                         char *buf;
 659                         struct scatterlist *sg;
 660
 661                         sg = scsi_sglist(cmd);
 662                         buf = kmap_atomic(sg_page(sg)) + sg->offset;
 663
 664                         memset(buf, 0, cmd->cmnd[4]);
 665                         kunmap_atomic(buf - sg->offset);
 666
 667                         cmd->result = (DID_OK << 16);
 668                         cmd->scsi_done(cmd);
 669                         return NULL;
 670                 }
 671
 672                 case READ_CAPACITY:
 673                 case INQUIRY:
 674
 675                         if(!(adapter->flag & (1L << cmd->device->channel))) {
 676
 677                                 dev_notice(&adapter->dev->dev,
 678                                         "scsi%d: scanning scsi channel %d "
 679                                         "for logical drives\n",
 680                                                 adapter->host->host_no,
 681                                                 cmd->device->channel);
 682
 683                                 adapter->flag |= (1L << cmd->device->channel);
 684                         }
 685
 686                         /* Allocate a SCB and initialize passthru */
 687                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 688                                 *busy = 1;
 689                                 return NULL;
 690                         }
 691                         pthru = scb->pthru;
 692
 693                         mbox = (mbox_t *)scb->raw_mbox;
 694                         memset(mbox, 0, sizeof(scb->raw_mbox));
 695                         memset(pthru, 0, sizeof(mega_passthru));
 696
 697                         pthru->timeout = 0;
 698                         pthru->ars = 1;
 699                         pthru->reqsenselen = 14;
 700                         pthru->islogical = 1;
 701                         pthru->logdrv = ldrv_num;
 702                         pthru->cdblen = cmd->cmd_len;
 703                         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 704
 705                         if( adapter->has_64bit_addr ) {
 706                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 707                         }
 708                         else {
 709                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 710                         }
 711
 712                         scb->dma_direction = PCI_DMA_FROMDEVICE;
 713
 714                         pthru->numsgelements = mega_build_sglist(adapter, scb,
 715                                 &pthru->dataxferaddr, &pthru->dataxferlen);
 716
 717                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 718
 719                         return scb;
 720
 721                 case READ_6:
 722                 case WRITE_6:
 723                 case READ_10:
 724                 case WRITE_10:
 725                 case READ_12:
 726                 case WRITE_12:
 727
 728                         /* Allocate a SCB and initialize mailbox */
 729                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 730                                 *busy = 1;
 731                                 return NULL;
 732                         }
 733                         mbox = (mbox_t *)scb->raw_mbox;
 734
 735                         memset(mbox, 0, sizeof(scb->raw_mbox));
 736                         mbox->m_out.logdrv = ldrv_num;
 737
 738                         /*
 739                          * A little hack: 2nd bit is zero for all scsi read
 740                          * commands and is set for all scsi write commands
 741                          */
 742                         if( adapter->has_64bit_addr ) {
 743                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 744                                         MEGA_MBOXCMD_LWRITE64:
 745                                         MEGA_MBOXCMD_LREAD64 ;
 746                         }
 747                         else {
 748                                 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 749                                         MEGA_MBOXCMD_LWRITE:
 750                                         MEGA_MBOXCMD_LREAD ;
 751                         }
 752
 753                         /*
 754                          * 6-byte READ(0x08) or WRITE(0x0A) cdb
 755                          */
 756                         if( cmd->cmd_len == 6 ) {
 757                                 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
 758                                 mbox->m_out.lba =
 759                                         ((u32)cmd->cmnd[1] << 16) |
 760                                         ((u32)cmd->cmnd[2] << 8) |
 761                                         (u32)cmd->cmnd[3];
 762
 763                                 mbox->m_out.lba &= 0x1FFFFF;
 764
 765 #if MEGA_HAVE_STATS
 766                                 /*
 767                                  * Take modulo 0x80, since the logical drive
 768                                  * number increases by 0x80 when a logical
 769                                  * drive was deleted
 770                                  */
 771                                 if (*cmd->cmnd == READ_6) {
 772                                         adapter->nreads[ldrv_num%0x80]++;
 773                                         adapter->nreadblocks[ldrv_num%0x80] +=
 774                                                 mbox->m_out.numsectors;
 775                                 } else {
 776                                         adapter->nwrites[ldrv_num%0x80]++;
 777                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 778                                                 mbox->m_out.numsectors;
 779                                 }
 780 #endif
 781                         }
 782
 783                         /*
 784                          * 10-byte READ(0x28) or WRITE(0x2A) cdb
 785                          */
 786                         if( cmd->cmd_len == 10 ) {
 787                                 mbox->m_out.numsectors =
 788                                         (u32)cmd->cmnd[8] |
 789                                         ((u32)cmd->cmnd[7] << 8);
 790                                 mbox->m_out.lba =
 791                                         ((u32)cmd->cmnd[2] << 24) |
 792                                         ((u32)cmd->cmnd[3] << 16) |
 793                                         ((u32)cmd->cmnd[4] << 8) |
 794                                         (u32)cmd->cmnd[5];
 795
 796 #if MEGA_HAVE_STATS
 797                                 if (*cmd->cmnd == READ_10) {
 798                                         adapter->nreads[ldrv_num%0x80]++;
 799                                         adapter->nreadblocks[ldrv_num%0x80] +=
 800                                                 mbox->m_out.numsectors;
 801                                 } else {
 802                                         adapter->nwrites[ldrv_num%0x80]++;
 803                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 804                                                 mbox->m_out.numsectors;
 805                                 }
 806 #endif
 807                         }
 808
 809                         /*
 810                          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
 811                          */
 812                         if( cmd->cmd_len == 12 ) {
 813                                 mbox->m_out.lba =
 814                                         ((u32)cmd->cmnd[2] << 24) |
 815                                         ((u32)cmd->cmnd[3] << 16) |
 816                                         ((u32)cmd->cmnd[4] << 8) |
 817                                         (u32)cmd->cmnd[5];
 818
 819                                 mbox->m_out.numsectors =
 820                                         ((u32)cmd->cmnd[6] << 24) |
 821                                         ((u32)cmd->cmnd[7] << 16) |
 822                                         ((u32)cmd->cmnd[8] << 8) |
 823                                         (u32)cmd->cmnd[9];
 824
 825 #if MEGA_HAVE_STATS
 826                                 if (*cmd->cmnd == READ_12) {
 827                                         adapter->nreads[ldrv_num%0x80]++;
 828                                         adapter->nreadblocks[ldrv_num%0x80] +=
 829                                                 mbox->m_out.numsectors;
 830                                 } else {
 831                                         adapter->nwrites[ldrv_num%0x80]++;
 832                                         adapter->nwriteblocks[ldrv_num%0x80] +=
 833                                                 mbox->m_out.numsectors;
 834                                 }
 835 #endif
 836                         }
 837
 838                         /*
 839                          * If it is a read command
 840                          */
 841                         if( (*cmd->cmnd & 0x0F) == 0x08 ) {
 842                                 scb->dma_direction = PCI_DMA_FROMDEVICE;
 843                         }
 844                         else {
 845                                 scb->dma_direction = PCI_DMA_TODEVICE;
 846                         }
 847
 848                         /* Calculate Scatter-Gather info */
 849                         mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
 850                                         (u32 *)&mbox->m_out.xferaddr, &seg);
 851
 852                         return scb;
 853
 854 #if MEGA_HAVE_CLUSTERING
 855                 case RESERVE:   /* Fall through */
 856                 case RELEASE:
 857
 858                         /*
 859                          * Do we support clustering and is the support enabled
 860                          */
 861                         if( ! adapter->has_cluster ) {
 862
 863                                 cmd->result = (DID_BAD_TARGET << 16);
 864                                 cmd->scsi_done(cmd);
 865                                 return NULL;
 866                         }
 867
 868                         /* Allocate a SCB and initialize mailbox */
 869                         if(!(scb = mega_allocate_scb(adapter, cmd))) {
 870                                 *busy = 1;
 871                                 return NULL;
 872                         }
 873
 874                         scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 875                         scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
 876                                 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
 877
 878                         scb->raw_mbox[3] = ldrv_num;
 879
 880                         scb->dma_direction = PCI_DMA_NONE;
 881
 882                         return scb;
 883 #endif
 884
 885                 default:
 886                         cmd->result = (DID_BAD_TARGET << 16);
 887                         cmd->scsi_done(cmd);
 888                         return NULL;
 889                 }
 890         }
 891
 892         /*
 893          * Passthru drive commands
 894          */
 895         else {
 896                 /* Allocate a SCB and initialize passthru */
 897                 if(!(scb = mega_allocate_scb(adapter, cmd))) {
 898                         *busy = 1;
 899                         return NULL;
 900                 }
 901
 902                 mbox = (mbox_t *)scb->raw_mbox;
 903                 memset(mbox, 0, sizeof(scb->raw_mbox));
 904
 905                 if( adapter->support_ext_cdb ) {
 906
 907                         mega_prepare_extpassthru(adapter, scb, cmd,
 908                                         channel, target);
 909
 910                         mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
 911
 912                         mbox->m_out.xferaddr = scb->epthru_dma_addr;
 913
 914                 }
 915                 else {
 916
 917                         pthru = mega_prepare_passthru(adapter, scb, cmd,
 918                                         channel, target);
 919
 920                         /* Initialize mailbox */
 921                         if( adapter->has_64bit_addr ) {
 922                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 923                         }
 924                         else {
 925                                 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 926                         }
 927
 928                         mbox->m_out.xferaddr = scb->pthru_dma_addr;
 929
 930                 }
 931                 return scb;
 932         }
 933         return NULL;
 934 }
 935
 936
 937 /**
 938  * mega_prepare_passthru()
 939  * @adapter: pointer to our soft state
 940  * @scb: our scsi control block
 941  * @cmd: scsi command from the mid-layer
 942  * @channel: actual channel on the controller
 943  * @target: actual id on the controller.
 944  *
 945  * prepare a command for the scsi physical devices.
 946  */
 947 static mega_passthru *
 948 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,
 949                       int channel, int target)
 950 {
 951         mega_passthru *pthru;
 952
 953         pthru = scb->pthru;
 954         memset(pthru, 0, sizeof (mega_passthru));
 955
 956         /* 0=6sec/1=60sec/2=10min/3=3hrs */
 957         pthru->timeout = 2;
 958
 959         pthru->ars = 1;
 960         pthru->reqsenselen = 14;
 961         pthru->islogical = 0;
 962
 963         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
 964
 965         pthru->target = (adapter->flag & BOARD_40LD) ?
 966                 (channel << 4) | target : target;
 967
 968         pthru->cdblen = cmd->cmd_len;
 969         pthru->logdrv = cmd->device->lun;
 970
 971         memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 972
 973         /* Not sure about the direction */
 974         scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
 975
 976         /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
 977         switch (cmd->cmnd[0]) {
 978         case INQUIRY:
 979         case READ_CAPACITY:
 980                 if(!(adapter->flag & (1L << cmd->device->channel))) {
 981
 982                         dev_notice(&adapter->dev->dev,
 983                                 "scsi%d: scanning scsi channel %d [P%d] "
 984                                 "for physical devices\n",
 985                                         adapter->host->host_no,
 986                                         cmd->device->channel, channel);
 987
 988                         adapter->flag |= (1L << cmd->device->channel);
 989                 }
 990                 /* Fall through */
 991         default:
 992                 pthru->numsgelements = mega_build_sglist(adapter, scb,
 993                                 &pthru->dataxferaddr, &pthru->dataxferlen);
 994                 break;
 995         }
 996         return pthru;
 997 }
 998
 999
1000 /**
1001  * mega_prepare_extpassthru()
1002  * @adapter: pointer to our soft state
1003  * @scb: our scsi control block
1004  * @cmd: scsi command from the mid-layer
1005  * @channel: actual channel on the controller
1006  * @target: actual id on the controller.
1007  *
1008  * prepare a command for the scsi physical devices. This rountine prepares
1009  * commands for devices which can take extended CDBs (>10 bytes)
1010  */
1011 static mega_ext_passthru *
1012 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,
1013                          struct scsi_cmnd *cmd,
1014                          int channel, int target)
1015 {
1016         mega_ext_passthru       *epthru;
1017
1018         epthru = scb->epthru;
1019         memset(epthru, 0, sizeof(mega_ext_passthru));
1020
1021         /* 0=6sec/1=60sec/2=10min/3=3hrs */
1022         epthru->timeout = 2;
1023
1024         epthru->ars = 1;
1025         epthru->reqsenselen = 14;
1026         epthru->islogical = 0;
1027
1028         epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1029         epthru->target = (adapter->flag & BOARD_40LD) ?
1030                 (channel << 4) | target : target;
1031
1032         epthru->cdblen = cmd->cmd_len;
1033         epthru->logdrv = cmd->device->lun;
1034
1035         memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1036
1037         /* Not sure about the direction */
1038         scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1039
1040         switch(cmd->cmnd[0]) {
1041         case INQUIRY:
1042         case READ_CAPACITY:
1043                 if(!(adapter->flag & (1L << cmd->device->channel))) {
1044
1045                         dev_notice(&adapter->dev->dev,
1046                                 "scsi%d: scanning scsi channel %d [P%d] "
1047                                 "for physical devices\n",
1048                                         adapter->host->host_no,
1049                                         cmd->device->channel, channel);
1050
1051                         adapter->flag |= (1L << cmd->device->channel);
1052                 }
1053                 /* Fall through */
1054         default:
1055                 epthru->numsgelements = mega_build_sglist(adapter, scb,
1056                                 &epthru->dataxferaddr, &epthru->dataxferlen);
1057                 break;
1058         }
1059
1060         return epthru;
1061 }
1062
1063 static void
1064 __mega_runpendq(adapter_t *adapter)
1065 {
1066         scb_t *scb;
1067         struct list_head *pos, *next;
1068
1069         /* Issue any pending commands to the card */
1070         list_for_each_safe(pos, next, &adapter->pending_list) {
1071
1072                 scb = list_entry(pos, scb_t, list);
1073
1074                 if( !(scb->state & SCB_ISSUED) ) {
1075
1076                         if( issue_scb(adapter, scb) != 0 )
1077                                 return;
1078                 }
1079         }
1080
1081         return;
1082 }
1083
1084
1085 /**
1086  * issue_scb()
1087  * @adapter: pointer to our soft state
1088  * @scb: scsi control block
1089  *
1090  * Post a command to the card if the mailbox is available, otherwise return
1091  * busy. We also take the scb from the pending list if the mailbox is
1092  * available.
1093  */
1094 static int
1095 issue_scb(adapter_t *adapter, scb_t *scb)
1096 {
1097         volatile mbox64_t       *mbox64 = adapter->mbox64;
1098         volatile mbox_t         *mbox = adapter->mbox;
1099         unsigned int    i = 0;
1100
1101         if(unlikely(mbox->m_in.busy)) {
1102                 do {
1103                         udelay(1);
1104                         i++;
1105                 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1106
1107                 if(mbox->m_in.busy) return -1;
1108         }
1109
1110         /* Copy mailbox data into host structure */
1111         memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1112                         sizeof(struct mbox_out));
1113
1114         mbox->m_out.cmdid = scb->idx;   /* Set cmdid */
1115         mbox->m_in.busy = 1;            /* Set busy */
1116
1117
1118         /*
1119          * Increment the pending queue counter
1120          */
1121         atomic_inc(&adapter->pend_cmds);
1122
1123         switch (mbox->m_out.cmd) {
1124         case MEGA_MBOXCMD_LREAD64:
1125         case MEGA_MBOXCMD_LWRITE64:
1126         case MEGA_MBOXCMD_PASSTHRU64:
1127         case MEGA_MBOXCMD_EXTPTHRU:
1128                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1129                 mbox64->xfer_segment_hi = 0;
1130                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1131                 break;
1132         default:
1133                 mbox64->xfer_segment_lo = 0;
1134                 mbox64->xfer_segment_hi = 0;
1135         }
1136
1137         /*
1138          * post the command
1139          */
1140         scb->state |= SCB_ISSUED;
1141
1142         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1143                 mbox->m_in.poll = 0;
1144                 mbox->m_in.ack = 0;
1145                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1146         }
1147         else {
1148                 irq_enable(adapter);
1149                 issue_command(adapter);
1150         }
1151
1152         return 0;
1153 }
1154
1155 /*
1156  * Wait until the controller's mailbox is available
1157  */
1158 static inline int
1159 mega_busywait_mbox (adapter_t *adapter)
1160 {
1161         if (adapter->mbox->m_in.busy)
1162                 return __mega_busywait_mbox(adapter);
1163         return 0;
1164 }
1165
1166 /**
1167  * issue_scb_block()
1168  * @adapter: pointer to our soft state
1169  * @raw_mbox: the mailbox
1170  *
1171  * Issue a scb in synchronous and non-interrupt mode
1172  */
1173 static int
1174 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1175 {
1176         volatile mbox64_t *mbox64 = adapter->mbox64;
1177         volatile mbox_t *mbox = adapter->mbox;
1178         u8      byte;
1179
1180         /* Wait until mailbox is free */
1181         if(mega_busywait_mbox (adapter))
1182                 goto bug_blocked_mailbox;
1183
1184         /* Copy mailbox data into host structure */
1185         memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1186         mbox->m_out.cmdid = 0xFE;
1187         mbox->m_in.busy = 1;
1188
1189         switch (raw_mbox[0]) {
1190         case MEGA_MBOXCMD_LREAD64:
1191         case MEGA_MBOXCMD_LWRITE64:
1192         case MEGA_MBOXCMD_PASSTHRU64:
1193         case MEGA_MBOXCMD_EXTPTHRU:
1194                 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1195                 mbox64->xfer_segment_hi = 0;
1196                 mbox->m_out.xferaddr = 0xFFFFFFFF;
1197                 break;
1198         default:
1199                 mbox64->xfer_segment_lo = 0;
1200                 mbox64->xfer_segment_hi = 0;
1201         }
1202
1203         if( likely(adapter->flag & BOARD_MEMMAP) ) {
1204                 mbox->m_in.poll = 0;
1205                 mbox->m_in.ack = 0;
1206                 mbox->m_in.numstatus = 0xFF;
1207                 mbox->m_in.status = 0xFF;
1208                 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1209
1210                 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1211                         cpu_relax();
1212
1213                 mbox->m_in.numstatus = 0xFF;
1214
1215                 while( (volatile u8)mbox->m_in.poll != 0x77 )
1216                         cpu_relax();
1217
1218                 mbox->m_in.poll = 0;
1219                 mbox->m_in.ack = 0x77;
1220
1221                 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1222
1223                 while(RDINDOOR(adapter) & 0x2)
1224                         cpu_relax();
1225         }
1226         else {
1227                 irq_disable(adapter);
1228                 issue_command(adapter);
1229
1230                 while (!((byte = irq_state(adapter)) & INTR_VALID))
1231                         cpu_relax();
1232
1233                 set_irq_state(adapter, byte);
1234                 irq_enable(adapter);
1235                 irq_ack(adapter);
1236         }
1237
1238         return mbox->m_in.status;
1239
1240 bug_blocked_mailbox:
1241         dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1242         udelay (1000);
1243         return -1;
1244 }
1245
1246
1247 /**
1248  * megaraid_isr_iomapped()
1249  * @irq: irq
1250  * @devp: pointer to our soft state
1251  *
1252  * Interrupt service routine for io-mapped controllers.
1253  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1254  * and service the completed commands.
1255  */
1256 static irqreturn_t
1257 megaraid_isr_iomapped(int irq, void *devp)
1258 {
1259         adapter_t       *adapter = devp;
1260         unsigned long   flags;
1261         u8      status;
1262         u8      nstatus;
1263         u8      completed[MAX_FIRMWARE_STATUS];
1264         u8      byte;
1265         int     handled = 0;
1266
1267
1268         /*
1269          * loop till F/W has more commands for us to complete.
1270          */
1271         spin_lock_irqsave(&adapter->lock, flags);
1272
1273         do {
1274                 /* Check if a valid interrupt is pending */
1275                 byte = irq_state(adapter);
1276                 if( (byte & VALID_INTR_BYTE) == 0 ) {
1277                         /*
1278                          * No more pending commands
1279                          */
1280                         goto out_unlock;
1281                 }
1282                 set_irq_state(adapter, byte);
1283
1284                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1285                                 == 0xFF)
1286                         cpu_relax();
1287                 adapter->mbox->m_in.numstatus = 0xFF;
1288
1289                 status = adapter->mbox->m_in.status;
1290
1291                 /*
1292                  * decrement the pending queue counter
1293                  */
1294                 atomic_sub(nstatus, &adapter->pend_cmds);
1295
1296                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1297                                 nstatus);
1298
1299                 /* Acknowledge interrupt */
1300                 irq_ack(adapter);
1301
1302                 mega_cmd_done(adapter, completed, nstatus, status);
1303
1304                 mega_rundoneq(adapter);
1305
1306                 handled = 1;
1307
1308                 /* Loop through any pending requests */
1309                 if(atomic_read(&adapter->quiescent) == 0) {
1310                         mega_runpendq(adapter);
1311                 }
1312
1313         } while(1);
1314
1315  out_unlock:
1316
1317         spin_unlock_irqrestore(&adapter->lock, flags);
1318
1319         return IRQ_RETVAL(handled);
1320 }
1321
1322
1323 /**
1324  * megaraid_isr_memmapped()
1325  * @irq: irq
1326  * @devp: pointer to our soft state
1327  *
1328  * Interrupt service routine for memory-mapped controllers.
1329  * Find out if our device is interrupting. If yes, acknowledge the interrupt
1330  * and service the completed commands.
1331  */
1332 static irqreturn_t
1333 megaraid_isr_memmapped(int irq, void *devp)
1334 {
1335         adapter_t       *adapter = devp;
1336         unsigned long   flags;
1337         u8      status;
1338         u32     dword = 0;
1339         u8      nstatus;
1340         u8      completed[MAX_FIRMWARE_STATUS];
1341         int     handled = 0;
1342
1343
1344         /*
1345          * loop till F/W has more commands for us to complete.
1346          */
1347         spin_lock_irqsave(&adapter->lock, flags);
1348
1349         do {
1350                 /* Check if a valid interrupt is pending */
1351                 dword = RDOUTDOOR(adapter);
1352                 if(dword != 0x10001234) {
1353                         /*
1354                          * No more pending commands
1355                          */
1356                         goto out_unlock;
1357                 }
1358                 WROUTDOOR(adapter, 0x10001234);
1359
1360                 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1361                                 == 0xFF) {
1362                         cpu_relax();
1363                 }
1364                 adapter->mbox->m_in.numstatus = 0xFF;
1365
1366                 status = adapter->mbox->m_in.status;
1367
1368                 /*
1369                  * decrement the pending queue counter
1370                  */
1371                 atomic_sub(nstatus, &adapter->pend_cmds);
1372
1373                 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1374                                 nstatus);
1375
1376                 /* Acknowledge interrupt */
1377                 WRINDOOR(adapter, 0x2);
1378
1379                 handled = 1;
1380
1381                 while( RDINDOOR(adapter) & 0x02 )
1382                         cpu_relax();
1383
1384                 mega_cmd_done(adapter, completed, nstatus, status);
1385
1386                 mega_rundoneq(adapter);
1387
1388                 /* Loop through any pending requests */
1389                 if(atomic_read(&adapter->quiescent) == 0) {
1390                         mega_runpendq(adapter);
1391                 }
1392
1393         } while(1);
1394
1395  out_unlock:
1396
1397         spin_unlock_irqrestore(&adapter->lock, flags);
1398
1399         return IRQ_RETVAL(handled);
1400 }
1401 /**
1402  * mega_cmd_done()
1403  * @adapter: pointer to our soft state
1404  * @completed: array of ids of completed commands
1405  * @nstatus: number of completed commands
1406  * @status: status of the last command completed
1407  *
1408  * Complete the commands and call the scsi mid-layer callback hooks.
1409  */
1410 static void
1411 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1412 {
1413         mega_ext_passthru       *epthru = NULL;
1414         struct scatterlist      *sgl;
1415         struct scsi_cmnd        *cmd = NULL;
1416         mega_passthru   *pthru = NULL;
1417         mbox_t  *mbox = NULL;
1418         u8      c;
1419         scb_t   *scb;
1420         int     islogical;
1421         int     cmdid;
1422         int     i;
1423
1424         /*
1425          * for all the commands completed, call the mid-layer callback routine
1426          * and free the scb.
1427          */
1428         for( i = 0; i < nstatus; i++ ) {
1429
1430                 cmdid = completed[i];
1431
1432                 /*
1433                  * Only free SCBs for the commands coming down from the
1434                  * mid-layer, not for which were issued internally
1435                  *
1436                  * For internal command, restore the status returned by the
1437                  * firmware so that user can interpret it.
1438                  */
1439                 if (cmdid == CMDID_INT_CMDS) {
1440                         scb = &adapter->int_scb;
1441
1442                         list_del_init(&scb->list);
1443                         scb->state = SCB_FREE;
1444
1445                         adapter->int_status = status;
1446                         complete(&adapter->int_waitq);
1447                 } else {
1448                         scb = &adapter->scb_list[cmdid];
1449
1450                         /*
1451                          * Make sure f/w has completed a valid command
1452                          */
1453                         if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1454                                 dev_crit(&adapter->dev->dev, "invalid command "
1455                                         "Id %d, scb->state:%x, scsi cmd:%p\n",
1456                                         cmdid, scb->state, scb->cmd);
1457
1458                                 continue;
1459                         }
1460
1461                         /*
1462                          * Was a abort issued for this command
1463                          */
1464                         if( scb->state & SCB_ABORT ) {
1465
1466                                 dev_warn(&adapter->dev->dev,
1467                                         "aborted cmd [%x] complete\n",
1468                                         scb->idx);
1469
1470                                 scb->cmd->result = (DID_ABORT << 16);
1471
1472                                 list_add_tail(SCSI_LIST(scb->cmd),
1473                                                 &adapter->completed_list);
1474
1475                                 mega_free_scb(adapter, scb);
1476
1477                                 continue;
1478                         }
1479
1480                         /*
1481                          * Was a reset issued for this command
1482                          */
1483                         if( scb->state & SCB_RESET ) {
1484
1485                                 dev_warn(&adapter->dev->dev,
1486                                         "reset cmd [%x] complete\n",
1487                                         scb->idx);
1488
1489                                 scb->cmd->result = (DID_RESET << 16);
1490
1491                                 list_add_tail(SCSI_LIST(scb->cmd),
1492                                                 &adapter->completed_list);
1493
1494                                 mega_free_scb (adapter, scb);
1495
1496                                 continue;
1497                         }
1498
1499                         cmd = scb->cmd;
1500                         pthru = scb->pthru;
1501                         epthru = scb->epthru;
1502                         mbox = (mbox_t *)scb->raw_mbox;
1503
1504 #if MEGA_HAVE_STATS
1505                         {
1506
1507                         int     logdrv = mbox->m_out.logdrv;
1508
1509                         islogical = adapter->logdrv_chan[cmd->channel];
1510                         /*
1511                          * Maintain an error counter for the logical drive.
1512                          * Some application like SNMP agent need such
1513                          * statistics
1514                          */
1515                         if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1516                                                 cmd->cmnd[0] == READ_10 ||
1517                                                 cmd->cmnd[0] == READ_12)) {
1518                                 /*
1519                                  * Logical drive number increases by 0x80 when
1520                                  * a logical drive is deleted
1521                                  */
1522                                 adapter->rd_errors[logdrv%0x80]++;
1523                         }
1524
1525                         if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1526                                                 cmd->cmnd[0] == WRITE_10 ||
1527                                                 cmd->cmnd[0] == WRITE_12)) {
1528                                 /*
1529                                  * Logical drive number increases by 0x80 when
1530                                  * a logical drive is deleted
1531                                  */
1532                                 adapter->wr_errors[logdrv%0x80]++;
1533                         }
1534
1535                         }
1536 #endif
1537                 }
1538
1539                 /*
1540                  * Do not return the presence of hard disk on the channel so,
1541                  * inquiry sent, and returned data==hard disk or removable
1542                  * hard disk and not logical, request should return failure! -
1543                  * PJ
1544                  */
1545                 islogical = adapter->logdrv_chan[cmd->device->channel];
1546                 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1547
1548                         sgl = scsi_sglist(cmd);
1549                         if( sg_page(sgl) ) {
1550                                 c = *(unsigned char *) sg_virt(&sgl[0]);
1551                         } else {
1552                                 dev_warn(&adapter->dev->dev, "invalid sg\n");
1553                                 c = 0;
1554                         }
1555
1556                         if(IS_RAID_CH(adapter, cmd->device->channel) &&
1557                                         ((c & 0x1F ) == TYPE_DISK)) {
1558                                 status = 0xF0;
1559                         }
1560                 }
1561
1562                 /* clear result; otherwise, success returns corrupt value */
1563                 cmd->result = 0;
1564
1565                 /* Convert MegaRAID status to Linux error code */
1566                 switch (status) {
1567                 case 0x00:      /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1568                         cmd->result |= (DID_OK << 16);
1569                         break;
1570
1571                 case 0x02:      /* ERROR_ABORTED, i.e.
1572                                    SCSI_STATUS_CHECK_CONDITION */
1573
1574                         /* set sense_buffer and result fields */
1575                         if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1576                                 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1577
1578                                 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1579                                                 14);
1580
1581                                 cmd->result = (DRIVER_SENSE << 24) |
1582                                         (DID_OK << 16) |
1583                                         (CHECK_CONDITION << 1);
1584                         }
1585                         else {
1586                                 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1587
1588                                         memcpy(cmd->sense_buffer,
1589                                                 epthru->reqsensearea, 14);
1590
1591                                         cmd->result = (DRIVER_SENSE << 24) |
1592                                                 (DID_OK << 16) |
1593                                                 (CHECK_CONDITION << 1);
1594                                 } else {
1595                                         cmd->sense_buffer[0] = 0x70;
1596                                         cmd->sense_buffer[2] = ABORTED_COMMAND;
1597                                         cmd->result |= (CHECK_CONDITION << 1);
1598                                 }
1599                         }
1600                         break;
1601
1602                 case 0x08:      /* ERR_DEST_DRIVE_FAILED, i.e.
1603                                    SCSI_STATUS_BUSY */
1604                         cmd->result |= (DID_BUS_BUSY << 16) | status;
1605                         break;
1606
1607                 default:
1608 #if MEGA_HAVE_CLUSTERING
1609                         /*
1610                          * If TEST_UNIT_READY fails, we know
1611                          * MEGA_RESERVATION_STATUS failed
1612                          */
1613                         if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1614                                 cmd->result |= (DID_ERROR << 16) |
1615                                         (RESERVATION_CONFLICT << 1);
1616                         }
1617                         else
1618                         /*
1619                          * Error code returned is 1 if Reserve or Release
1620                          * failed or the input parameter is invalid
1621                          */
1622                         if( status == 1 &&
1623                                 (cmd->cmnd[0] == RESERVE ||
1624                                          cmd->cmnd[0] == RELEASE) ) {
1625
1626                                 cmd->result |= (DID_ERROR << 16) |
1627                                         (RESERVATION_CONFLICT << 1);
1628                         }
1629                         else
1630 #endif
1631                                 cmd->result |= (DID_BAD_TARGET << 16)|status;
1632                 }
1633
1634                 mega_free_scb(adapter, scb);
1635
1636                 /* Add Scsi_Command to end of completed queue */
1637                 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1638         }
1639 }
1640
1641
1642 /*
1643  * mega_runpendq()
1644  *
1645  * Run through the list of completed requests and finish it
1646  */
1647 static void
1648 mega_rundoneq (adapter_t *adapter)
1649 {
1650         struct scsi_cmnd *cmd;
1651         struct list_head *pos;
1652
1653         list_for_each(pos, &adapter->completed_list) {
1654
1655                 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1656
1657                 cmd = list_entry(spos, struct scsi_cmnd, SCp);
1658                 cmd->scsi_done(cmd);
1659         }
1660
1661         INIT_LIST_HEAD(&adapter->completed_list);
1662 }
1663
1664
1665 /*
1666  * Free a SCB structure
1667  * Note: We assume the scsi commands associated with this scb is not free yet.
1668  */
1669 static void
1670 mega_free_scb(adapter_t *adapter, scb_t *scb)
1671 {
1672         switch( scb->dma_type ) {
1673
1674         case MEGA_DMA_TYPE_NONE:
1675                 break;
1676
1677         case MEGA_SGLIST:
1678                 scsi_dma_unmap(scb->cmd);
1679                 break;
1680         default:
1681                 break;
1682         }
1683
1684         /*
1685          * Remove from the pending list
1686          */
1687         list_del_init(&scb->list);
1688
1689         /* Link the scb back into free list */
1690         scb->state = SCB_FREE;
1691         scb->cmd = NULL;
1692
1693         list_add(&scb->list, &adapter->free_list);
1694 }
1695
1696
1697 static int
1698 __mega_busywait_mbox (adapter_t *adapter)
1699 {
1700         volatile mbox_t *mbox = adapter->mbox;
1701         long counter;
1702
1703         for (counter = 0; counter < 10000; counter++) {
1704                 if (!mbox->m_in.busy)
1705                         return 0;
1706                 udelay(100);
1707                 cond_resched();
1708         }
1709         return -1;              /* give up after 1 second */
1710 }
1711
1712 /*
1713  * Copies data to SGLIST
1714  * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1715  */
1716 static int
1717 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1718 {
1719         struct scatterlist *sg;
1720         struct scsi_cmnd        *cmd;
1721         int     sgcnt;
1722         int     idx;
1723
1724         cmd = scb->cmd;
1725
1726         /*
1727          * Copy Scatter-Gather list info into controller structure.
1728          *
1729          * The number of sg elements returned must not exceed our limit
1730          */
1731         sgcnt = scsi_dma_map(cmd);
1732
1733         scb->dma_type = MEGA_SGLIST;
1734
1735         BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1736
1737         *len = 0;
1738
1739         if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1740                 sg = scsi_sglist(cmd);
1741                 scb->dma_h_bulkdata = sg_dma_address(sg);
1742                 *buf = (u32)scb->dma_h_bulkdata;
1743                 *len = sg_dma_len(sg);
1744                 return 0;
1745         }
1746
1747         scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1748                 if (adapter->has_64bit_addr) {
1749                         scb->sgl64[idx].address = sg_dma_address(sg);
1750                         *len += scb->sgl64[idx].length = sg_dma_len(sg);
1751                 } else {
1752                         scb->sgl[idx].address = sg_dma_address(sg);
1753                         *len += scb->sgl[idx].length = sg_dma_len(sg);
1754                 }
1755         }
1756
1757         /* Reset pointer and length fields */
1758         *buf = scb->sgl_dma_addr;
1759
1760         /* Return count of SG requests */
1761         return sgcnt;
1762 }
1763
1764
1765 /*
1766  * mega_8_to_40ld()
1767  *
1768  * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1769  * Enquiry3 structures for later use
1770  */
1771 static void
1772 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1773                 mega_product_info *product_info)
1774 {
1775         int i;
1776
1777         product_info->max_commands = inquiry->adapter_info.max_commands;
1778         enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1779         product_info->nchannels = inquiry->adapter_info.nchannels;
1780
1781         for (i = 0; i < 4; i++) {
1782                 product_info->fw_version[i] =
1783                         inquiry->adapter_info.fw_version[i];
1784
1785                 product_info->bios_version[i] =
1786                         inquiry->adapter_info.bios_version[i];
1787         }
1788         enquiry3->cache_flush_interval =
1789                 inquiry->adapter_info.cache_flush_interval;
1790
1791         product_info->dram_size = inquiry->adapter_info.dram_size;
1792
1793         enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1794
1795         for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1796                 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1797                 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1798                 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1799         }
1800
1801         for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1802                 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1803 }
1804
1805 static inline void
1806 mega_free_sgl(adapter_t *adapter)
1807 {
1808         scb_t   *scb;
1809         int     i;
1810
1811         for(i = 0; i < adapter->max_cmds; i++) {
1812
1813                 scb = &adapter->scb_list[i];
1814
1815                 if( scb->sgl64 ) {
1816                         pci_free_consistent(adapter->dev,
1817                                 sizeof(mega_sgl64) * adapter->sglen,
1818                                 scb->sgl64,
1819                                 scb->sgl_dma_addr);
1820
1821                         scb->sgl64 = NULL;
1822                 }
1823
1824                 if( scb->pthru ) {
1825                         pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1826                                 scb->pthru, scb->pthru_dma_addr);
1827
1828                         scb->pthru = NULL;
1829                 }
1830
1831                 if( scb->epthru ) {
1832                         pci_free_consistent(adapter->dev,
1833                                 sizeof(mega_ext_passthru),
1834                                 scb->epthru, scb->epthru_dma_addr);
1835
1836                         scb->epthru = NULL;
1837                 }
1838
1839         }
1840 }
1841
1842
1843 /*
1844  * Get information about the card/driver
1845  */
1846 const char *
1847 megaraid_info(struct Scsi_Host *host)
1848 {
1849         static char buffer[512];
1850         adapter_t *adapter;
1851
1852         adapter = (adapter_t *)host->hostdata;
1853
1854         sprintf (buffer,
1855                  "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1856                  adapter->fw_version, adapter->product_info.max_commands,
1857                  adapter->host->max_id, adapter->host->max_channel,
1858                  (u32)adapter->host->max_lun);
1859         return buffer;
1860 }
1861
1862 /*
1863  * Abort a previous SCSI request. Only commands on the pending list can be
1864  * aborted. All the commands issued to the F/W must complete.
1865  */
1866 static int
1867 megaraid_abort(struct scsi_cmnd *cmd)
1868 {
1869         adapter_t       *adapter;
1870         int             rval;
1871
1872         adapter = (adapter_t *)cmd->device->host->hostdata;
1873
1874         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1875
1876         /*
1877          * This is required here to complete any completed requests
1878          * to be communicated over to the mid layer.
1879          */
1880         mega_rundoneq(adapter);
1881
1882         return rval;
1883 }
1884
1885
1886 static int
1887 megaraid_reset(struct scsi_cmnd *cmd)
1888 {
1889         adapter_t       *adapter;
1890         megacmd_t       mc;
1891         int             rval;
1892
1893         adapter = (adapter_t *)cmd->device->host->hostdata;
1894
1895 #if MEGA_HAVE_CLUSTERING
1896         mc.cmd = MEGA_CLUSTER_CMD;
1897         mc.opcode = MEGA_RESET_RESERVATIONS;
1898
1899         if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1900                 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1901         }
1902         else {
1903                 dev_info(&adapter->dev->dev, "reservation reset\n");
1904         }
1905 #endif
1906
1907         spin_lock_irq(&adapter->lock);
1908
1909         rval =  megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1910
1911         /*
1912          * This is required here to complete any completed requests
1913          * to be communicated over to the mid layer.
1914          */
1915         mega_rundoneq(adapter);
1916         spin_unlock_irq(&adapter->lock);
1917
1918         return rval;
1919 }
1920
1921 /**
1922  * megaraid_abort_and_reset()
1923  * @adapter: megaraid soft state
1924  * @cmd: scsi command to be aborted or reset
1925  * @aor: abort or reset flag
1926  *
1927  * Try to locate the scsi command in the pending queue. If found and is not
1928  * issued to the controller, abort/reset it. Otherwise return failure
1929  */
1930 static int
1931 megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor)
1932 {
1933         struct list_head        *pos, *next;
1934         scb_t                   *scb;
1935
1936         dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1937              (aor == SCB_ABORT)? "ABORTING":"RESET",
1938              cmd->cmnd[0], cmd->device->channel,
1939              cmd->device->id, (u32)cmd->device->lun);
1940
1941         if(list_empty(&adapter->pending_list))
1942                 return FAILED;
1943
1944         list_for_each_safe(pos, next, &adapter->pending_list) {
1945
1946                 scb = list_entry(pos, scb_t, list);
1947
1948                 if (scb->cmd == cmd) { /* Found command */
1949
1950                         scb->state |= aor;
1951
1952                         /*
1953                          * Check if this command has firmware ownership. If
1954                          * yes, we cannot reset this command. Whenever f/w
1955                          * completes this command, we will return appropriate
1956                          * status from ISR.
1957                          */
1958                         if( scb->state & SCB_ISSUED ) {
1959
1960                                 dev_warn(&adapter->dev->dev,
1961                                         "%s[%x], fw owner\n",
1962                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
1963                                         scb->idx);
1964
1965                                 return FAILED;
1966                         }
1967                         else {
1968
1969                                 /*
1970                                  * Not yet issued! Remove from the pending
1971                                  * list
1972                                  */
1973                                 dev_warn(&adapter->dev->dev,
1974                                         "%s-[%x], driver owner\n",
1975                                         (aor==SCB_ABORT) ? "ABORTING":"RESET",
1976                                         scb->idx);
1977
1978                                 mega_free_scb(adapter, scb);
1979
1980                                 if( aor == SCB_ABORT ) {
1981                                         cmd->result = (DID_ABORT << 16);
1982                                 }
1983                                 else {
1984                                         cmd->result = (DID_RESET << 16);
1985                                 }
1986
1987                                 list_add_tail(SCSI_LIST(cmd),
1988                                                 &adapter->completed_list);
1989
1990                                 return SUCCESS;
1991                         }
1992                 }
1993         }
1994
1995         return FAILED;
1996 }
1997
1998 static inline int
1999 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2000 {
2001         *pdev = pci_alloc_dev(NULL);
2002
2003         if( *pdev == NULL ) return -1;
2004
2005         memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2006
2007         if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2008                 kfree(*pdev);
2009                 return -1;
2010         }
2011
2012         return 0;
2013 }
2014
2015 static inline void
2016 free_local_pdev(struct pci_dev *pdev)
2017 {
2018         kfree(pdev);
2019 }
2020
2021 /**
2022  * mega_allocate_inquiry()
2023  * @dma_handle: handle returned for dma address
2024  * @pdev: handle to pci device
2025  *
2026  * allocates memory for inquiry structure
2027  */
2028 static inline void *
2029 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2030 {
2031         return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2032 }
2033
2034
2035 static inline void
2036 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2037 {
2038         pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2039 }
2040
2041
2042 #ifdef CONFIG_PROC_FS
2043 /* Following code handles /proc fs  */
2044
2045 /**
2046  * proc_show_config()
2047  * @m: Synthetic file construction data
2048  * @v: File iterator
2049  *
2050  * Display configuration information about the controller.
2051  */
2052 static int
2053 proc_show_config(struct seq_file *m, void *v)
2054 {
2055
2056         adapter_t *adapter = m->private;
2057
2058         seq_puts(m, MEGARAID_VERSION);
2059         if(adapter->product_info.product_name[0])
2060                 seq_printf(m, "%s\n", adapter->product_info.product_name);
2061
2062         seq_puts(m, "Controller Type: ");
2063
2064         if( adapter->flag & BOARD_MEMMAP )
2065                 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2066         else
2067                 seq_puts(m, "418/428/434\n");
2068
2069         if(adapter->flag & BOARD_40LD)
2070                 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2071
2072         if(adapter->flag & BOARD_64BIT)
2073                 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2074         if( adapter->has_64bit_addr )
2075                 seq_puts(m, "Controller using 64-bit memory addressing\n");
2076         else
2077                 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2078
2079         seq_printf(m, "Base = %08lx, Irq = %d, ",
2080                    adapter->base, adapter->host->irq);
2081
2082         seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2083                    adapter->numldrv, adapter->product_info.nchannels);
2084
2085         seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2086                    adapter->fw_version, adapter->bios_version,
2087                    adapter->product_info.dram_size);
2088
2089         seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2090                    adapter->product_info.max_commands, adapter->max_cmds);
2091
2092         seq_printf(m, "support_ext_cdb    = %d\n", adapter->support_ext_cdb);
2093         seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2094         seq_printf(m, "boot_ldrv_enabled  = %d\n", adapter->boot_ldrv_enabled);
2095         seq_printf(m, "boot_ldrv          = %d\n", adapter->boot_ldrv);
2096         seq_printf(m, "boot_pdrv_enabled  = %d\n", adapter->boot_pdrv_enabled);
2097         seq_printf(m, "boot_pdrv_ch       = %d\n", adapter->boot_pdrv_ch);
2098         seq_printf(m, "boot_pdrv_tgt      = %d\n", adapter->boot_pdrv_tgt);
2099         seq_printf(m, "quiescent          = %d\n",
2100                    atomic_read(&adapter->quiescent));
2101         seq_printf(m, "has_cluster        = %d\n", adapter->has_cluster);
2102
2103         seq_puts(m, "\nModule Parameters:\n");
2104         seq_printf(m, "max_cmd_per_lun    = %d\n", max_cmd_per_lun);
2105         seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2106         return 0;
2107 }
2108
2109 /**
2110  * proc_show_stat()
2111  * @m: Synthetic file construction data
2112  * @v: File iterator
2113  *
2114  * Display statistical information about the I/O activity.
2115  */
2116 static int
2117 proc_show_stat(struct seq_file *m, void *v)
2118 {
2119         adapter_t *adapter = m->private;
2120 #if MEGA_HAVE_STATS
2121         int     i;
2122 #endif
2123
2124         seq_puts(m, "Statistical Information for this controller\n");
2125         seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2126 #if MEGA_HAVE_STATS
2127         for(i = 0; i < adapter->numldrv; i++) {
2128                 seq_printf(m, "Logical Drive %d:\n", i);
2129                 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2130                            adapter->nreads[i], adapter->nwrites[i]);
2131                 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2132                            adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2133                 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2134                            adapter->rd_errors[i], adapter->wr_errors[i]);
2135         }
2136 #else
2137         seq_puts(m, "IO and error counters not compiled in driver.\n");
2138 #endif
2139         return 0;
2140 }
2141
2142
2143 /**
2144  * proc_show_mbox()
2145  * @m: Synthetic file construction data
2146  * @v: File iterator
2147  *
2148  * Display mailbox information for the last command issued. This information
2149  * is good for debugging.
2150  */
2151 static int
2152 proc_show_mbox(struct seq_file *m, void *v)
2153 {
2154         adapter_t       *adapter = m->private;
2155         volatile mbox_t *mbox = adapter->mbox;
2156
2157         seq_puts(m, "Contents of Mail Box Structure\n");
2158         seq_printf(m, "  Fw Command   = 0x%02x\n", mbox->m_out.cmd);
2159         seq_printf(m, "  Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2160         seq_printf(m, "  No of Sectors= %04d\n", mbox->m_out.numsectors);
2161         seq_printf(m, "  LBA          = 0x%02x\n", mbox->m_out.lba);
2162         seq_printf(m, "  DTA          = 0x%08x\n", mbox->m_out.xferaddr);
2163         seq_printf(m, "  Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2164         seq_printf(m, "  No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2165         seq_printf(m, "  Busy         = %01x\n", mbox->m_in.busy);
2166         seq_printf(m, "  Status       = 0x%02x\n", mbox->m_in.status);
2167         return 0;
2168 }
2169
2170
2171 /**
2172  * proc_show_rebuild_rate()
2173  * @m: Synthetic file construction data
2174  * @v: File iterator
2175  *
2176  * Display current rebuild rate
2177  */
2178 static int
2179 proc_show_rebuild_rate(struct seq_file *m, void *v)
2180 {
2181         adapter_t       *adapter = m->private;
2182         dma_addr_t      dma_handle;
2183         caddr_t         inquiry;
2184         struct pci_dev  *pdev;
2185
2186         if( make_local_pdev(adapter, &pdev) != 0 )
2187                 return 0;
2188
2189         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2190                 goto free_pdev;
2191
2192         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2193                 seq_puts(m, "Adapter inquiry failed.\n");
2194                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2195                 goto free_inquiry;
2196         }
2197
2198         if( adapter->flag & BOARD_40LD )
2199                 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2200                            ((mega_inquiry3 *)inquiry)->rebuild_rate);
2201         else
2202                 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2203                         ((mraid_ext_inquiry *)
2204                          inquiry)->raid_inq.adapter_info.rebuild_rate);
2205
2206 free_inquiry:
2207         mega_free_inquiry(inquiry, dma_handle, pdev);
2208 free_pdev:
2209         free_local_pdev(pdev);
2210         return 0;
2211 }
2212
2213
2214 /**
2215  * proc_show_battery()
2216  * @m: Synthetic file construction data
2217  * @v: File iterator
2218  *
2219  * Display information about the battery module on the controller.
2220  */
2221 static int
2222 proc_show_battery(struct seq_file *m, void *v)
2223 {
2224         adapter_t       *adapter = m->private;
2225         dma_addr_t      dma_handle;
2226         caddr_t         inquiry;
2227         struct pci_dev  *pdev;
2228         u8      battery_status;
2229
2230         if( make_local_pdev(adapter, &pdev) != 0 )
2231                 return 0;
2232
2233         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2234                 goto free_pdev;
2235
2236         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2237                 seq_puts(m, "Adapter inquiry failed.\n");
2238                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2239                 goto free_inquiry;
2240         }
2241
2242         if( adapter->flag & BOARD_40LD ) {
2243                 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2244         }
2245         else {
2246                 battery_status = ((mraid_ext_inquiry *)inquiry)->
2247                         raid_inq.adapter_info.battery_status;
2248         }
2249
2250         /*
2251          * Decode the battery status
2252          */
2253         seq_printf(m, "Battery Status:[%d]", battery_status);
2254
2255         if(battery_status == MEGA_BATT_CHARGE_DONE)
2256                 seq_puts(m, " Charge Done");
2257
2258         if(battery_status & MEGA_BATT_MODULE_MISSING)
2259                 seq_puts(m, " Module Missing");
2260
2261         if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2262                 seq_puts(m, " Low Voltage");
2263
2264         if(battery_status & MEGA_BATT_TEMP_HIGH)
2265                 seq_puts(m, " Temperature High");
2266
2267         if(battery_status & MEGA_BATT_PACK_MISSING)
2268                 seq_puts(m, " Pack Missing");
2269
2270         if(battery_status & MEGA_BATT_CHARGE_INPROG)
2271                 seq_puts(m, " Charge In-progress");
2272
2273         if(battery_status & MEGA_BATT_CHARGE_FAIL)
2274                 seq_puts(m, " Charge Fail");
2275
2276         if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2277                 seq_puts(m, " Cycles Exceeded");
2278
2279         seq_putc(m, '\n');
2280
2281 free_inquiry:
2282         mega_free_inquiry(inquiry, dma_handle, pdev);
2283 free_pdev:
2284         free_local_pdev(pdev);
2285         return 0;
2286 }
2287
2288
2289 /*
2290  * Display scsi inquiry
2291  */
2292 static void
2293 mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2294 {
2295         int     i;
2296
2297         seq_puts(m, "  Vendor: ");
2298         seq_write(m, scsi_inq + 8, 8);
2299         seq_puts(m, "  Model: ");
2300         seq_write(m, scsi_inq + 16, 16);
2301         seq_puts(m, "  Rev: ");
2302         seq_write(m, scsi_inq + 32, 4);
2303         seq_putc(m, '\n');
2304
2305         i = scsi_inq[0] & 0x1f;
2306         seq_printf(m, "  Type:   %s ", scsi_device_type(i));
2307
2308         seq_printf(m, "                 ANSI SCSI revision: %02x",
2309                    scsi_inq[2] & 0x07);
2310
2311         if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2312                 seq_puts(m, " CCS\n");
2313         else
2314                 seq_putc(m, '\n');
2315 }
2316
2317 /**
2318  * proc_show_pdrv()
2319  * @m: Synthetic file construction data
2320  * @adapter: pointer to our soft state
2321  * @channel: channel
2322  *
2323  * Display information about the physical drives.
2324  */
2325 static int
2326 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2327 {
2328         dma_addr_t      dma_handle;
2329         char            *scsi_inq;
2330         dma_addr_t      scsi_inq_dma_handle;
2331         caddr_t         inquiry;
2332         struct pci_dev  *pdev;
2333         u8      *pdrv_state;
2334         u8      state;
2335         int     tgt;
2336         int     max_channels;
2337         int     i;
2338
2339         if( make_local_pdev(adapter, &pdev) != 0 )
2340                 return 0;
2341
2342         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2343                 goto free_pdev;
2344
2345         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2346                 seq_puts(m, "Adapter inquiry failed.\n");
2347                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2348                 goto free_inquiry;
2349         }
2350
2351
2352         scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2353         if( scsi_inq == NULL ) {
2354                 seq_puts(m, "memory not available for scsi inq.\n");
2355                 goto free_inquiry;
2356         }
2357
2358         if( adapter->flag & BOARD_40LD ) {
2359                 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2360         }
2361         else {
2362                 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2363                         raid_inq.pdrv_info.pdrv_state;
2364         }
2365
2366         max_channels = adapter->product_info.nchannels;
2367
2368         if( channel >= max_channels ) {
2369                 goto free_pci;
2370         }
2371
2372         for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2373
2374                 i = channel*16 + tgt;
2375
2376                 state = *(pdrv_state + i);
2377                 switch( state & 0x0F ) {
2378                 case PDRV_ONLINE:
2379                         seq_printf(m, "Channel:%2d Id:%2d State: Online",
2380                                    channel, tgt);
2381                         break;
2382
2383                 case PDRV_FAILED:
2384                         seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2385                                    channel, tgt);
2386                         break;
2387
2388                 case PDRV_RBLD:
2389                         seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2390                                    channel, tgt);
2391                         break;
2392
2393                 case PDRV_HOTSPARE:
2394                         seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2395                                    channel, tgt);
2396                         break;
2397
2398                 default:
2399                         seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2400                                    channel, tgt);
2401                         break;
2402                 }
2403
2404                 /*
2405                  * This interface displays inquiries for disk drives
2406                  * only. Inquries for logical drives and non-disk
2407                  * devices are available through /proc/scsi/scsi
2408                  */
2409                 memset(scsi_inq, 0, 256);
2410                 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2411                                 scsi_inq_dma_handle) ||
2412                                 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2413                         continue;
2414                 }
2415
2416                 /*
2417                  * Check for overflow. We print less than 240
2418                  * characters for inquiry
2419                  */
2420                 seq_puts(m, ".\n");
2421                 mega_print_inquiry(m, scsi_inq);
2422         }
2423
2424 free_pci:
2425         pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2426 free_inquiry:
2427         mega_free_inquiry(inquiry, dma_handle, pdev);
2428 free_pdev:
2429         free_local_pdev(pdev);
2430         return 0;
2431 }
2432
2433 /**
2434  * proc_show_pdrv_ch0()
2435  * @m: Synthetic file construction data
2436  * @v: File iterator
2437  *
2438  * Display information about the physical drives on physical channel 0.
2439  */
2440 static int
2441 proc_show_pdrv_ch0(struct seq_file *m, void *v)
2442 {
2443         return proc_show_pdrv(m, m->private, 0);
2444 }
2445
2446
2447 /**
2448  * proc_show_pdrv_ch1()
2449  * @m: Synthetic file construction data
2450  * @v: File iterator
2451  *
2452  * Display information about the physical drives on physical channel 1.
2453  */
2454 static int
2455 proc_show_pdrv_ch1(struct seq_file *m, void *v)
2456 {
2457         return proc_show_pdrv(m, m->private, 1);
2458 }
2459
2460
2461 /**
2462  * proc_show_pdrv_ch2()
2463  * @m: Synthetic file construction data
2464  * @v: File iterator
2465  *
2466  * Display information about the physical drives on physical channel 2.
2467  */
2468 static int
2469 proc_show_pdrv_ch2(struct seq_file *m, void *v)
2470 {
2471         return proc_show_pdrv(m, m->private, 2);
2472 }
2473
2474
2475 /**
2476  * proc_show_pdrv_ch3()
2477  * @m: Synthetic file construction data
2478  * @v: File iterator
2479  *
2480  * Display information about the physical drives on physical channel 3.
2481  */
2482 static int
2483 proc_show_pdrv_ch3(struct seq_file *m, void *v)
2484 {
2485         return proc_show_pdrv(m, m->private, 3);
2486 }
2487
2488
2489 /**
2490  * proc_show_rdrv()
2491  * @m: Synthetic file construction data
2492  * @adapter: pointer to our soft state
2493  * @start: starting logical drive to display
2494  * @end: ending logical drive to display
2495  *
2496  * We do not print the inquiry information since its already available through
2497  * /proc/scsi/scsi interface
2498  */
2499 static int
2500 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2501 {
2502         dma_addr_t      dma_handle;
2503         logdrv_param    *lparam;
2504         megacmd_t       mc;
2505         char            *disk_array;
2506         dma_addr_t      disk_array_dma_handle;
2507         caddr_t         inquiry;
2508         struct pci_dev  *pdev;
2509         u8      *rdrv_state;
2510         int     num_ldrv;
2511         u32     array_sz;
2512         int     i;
2513
2514         if( make_local_pdev(adapter, &pdev) != 0 )
2515                 return 0;
2516
2517         if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2518                 goto free_pdev;
2519
2520         if( mega_adapinq(adapter, dma_handle) != 0 ) {
2521                 seq_puts(m, "Adapter inquiry failed.\n");
2522                 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2523                 goto free_inquiry;
2524         }
2525
2526         memset(&mc, 0, sizeof(megacmd_t));
2527
2528         if( adapter->flag & BOARD_40LD ) {
2529                 array_sz = sizeof(disk_array_40ld);
2530
2531                 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2532
2533                 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2534         }
2535         else {
2536                 array_sz = sizeof(disk_array_8ld);
2537
2538                 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2539                         raid_inq.logdrv_info.ldrv_state;
2540
2541                 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2542                         raid_inq.logdrv_info.num_ldrv;
2543         }
2544
2545         disk_array = pci_alloc_consistent(pdev, array_sz,
2546                         &disk_array_dma_handle);
2547
2548         if( disk_array == NULL ) {
2549                 seq_puts(m, "memory not available.\n");
2550                 goto free_inquiry;
2551         }
2552
2553         mc.xferaddr = (u32)disk_array_dma_handle;
2554
2555         if( adapter->flag & BOARD_40LD ) {
2556                 mc.cmd = FC_NEW_CONFIG;
2557                 mc.opcode = OP_DCMD_READ_CONFIG;
2558
2559                 if( mega_internal_command(adapter, &mc, NULL) ) {
2560                         seq_puts(m, "40LD read config failed.\n");
2561                         goto free_pci;
2562                 }
2563
2564         }
2565         else {
2566                 mc.cmd = NEW_READ_CONFIG_8LD;
2567
2568                 if( mega_internal_command(adapter, &mc, NULL) ) {
2569                         mc.cmd = READ_CONFIG_8LD;
2570                         if( mega_internal_command(adapter, &mc, NULL) ) {
2571                                 seq_puts(m, "8LD read config failed.\n");
2572                                 goto free_pci;
2573                         }
2574                 }
2575         }
2576
2577         for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2578
2579                 if( adapter->flag & BOARD_40LD ) {
2580                         lparam =
2581                         &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2582                 }
2583                 else {
2584                         lparam =
2585                         &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2586                 }
2587
2588                 /*
2589                  * Check for overflow. We print less than 240 characters for
2590                  * information about each logical drive.
2591                  */
2592                 seq_printf(m, "Logical drive:%2d:, ", i);
2593
2594                 switch( rdrv_state[i] & 0x0F ) {
2595                 case RDRV_OFFLINE:
2596                         seq_puts(m, "state: offline");
2597                         break;
2598                 case RDRV_DEGRADED:
2599                         seq_puts(m, "state: degraded");
2600                         break;
2601                 case RDRV_OPTIMAL:
2602                         seq_puts(m, "state: optimal");
2603                         break;
2604                 case RDRV_DELETED:
2605                         seq_puts(m, "state: deleted");
2606                         break;
2607                 default:
2608                         seq_puts(m, "state: unknown");
2609                         break;
2610                 }
2611
2612                 /*
2613                  * Check if check consistency or initialization is going on
2614                  * for this logical drive.
2615                  */
2616                 if( (rdrv_state[i] & 0xF0) == 0x20 )
2617                         seq_puts(m, ", check-consistency in progress");
2618                 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2619                         seq_puts(m, ", initialization in progress");
2620
2621                 seq_putc(m, '\n');
2622
2623                 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2624                 seq_printf(m, "RAID level:%3d, ", lparam->level);
2625                 seq_printf(m, "Stripe size:%3d, ",
2626                            lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2627                 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2628
2629                 seq_puts(m, "Read Policy: ");
2630                 switch(lparam->read_ahead) {
2631                 case NO_READ_AHEAD:
2632                         seq_puts(m, "No read ahead, ");
2633                         break;
2634                 case READ_AHEAD:
2635                         seq_puts(m, "Read ahead, ");
2636                         break;
2637                 case ADAP_READ_AHEAD:
2638                         seq_puts(m, "Adaptive, ");
2639                         break;
2640
2641                 }
2642
2643                 seq_puts(m, "Write Policy: ");
2644                 switch(lparam->write_mode) {
2645                 case WRMODE_WRITE_THRU:
2646                         seq_puts(m, "Write thru, ");
2647                         break;
2648                 case WRMODE_WRITE_BACK:
2649                         seq_puts(m, "Write back, ");
2650                         break;
2651                 }
2652
2653                 seq_puts(m, "Cache Policy: ");
2654                 switch(lparam->direct_io) {
2655                 case CACHED_IO:
2656                         seq_puts(m, "Cached IO\n\n");
2657                         break;
2658                 case DIRECT_IO:
2659                         seq_puts(m, "Direct IO\n\n");
2660                         break;
2661                 }
2662         }
2663
2664 free_pci:
2665         pci_free_consistent(pdev, array_sz, disk_array,
2666                         disk_array_dma_handle);
2667 free_inquiry:
2668         mega_free_inquiry(inquiry, dma_handle, pdev);
2669 free_pdev:
2670         free_local_pdev(pdev);
2671         return 0;
2672 }
2673
2674 /**
2675  * proc_show_rdrv_10()
2676  * @m: Synthetic file construction data
2677  * @v: File iterator
2678  *
2679  * Display real time information about the logical drives 0 through 9.
2680  */
2681 static int
2682 proc_show_rdrv_10(struct seq_file *m, void *v)
2683 {
2684         return proc_show_rdrv(m, m->private, 0, 9);
2685 }
2686
2687
2688 /**
2689  * proc_show_rdrv_20()
2690  * @m: Synthetic file construction data
2691  * @v: File iterator
2692  *
2693  * Display real time information about the logical drives 0 through 9.
2694  */
2695 static int
2696 proc_show_rdrv_20(struct seq_file *m, void *v)
2697 {
2698         return proc_show_rdrv(m, m->private, 10, 19);
2699 }
2700
2701
2702 /**
2703  * proc_show_rdrv_30()
2704  * @m: Synthetic file construction data
2705  * @v: File iterator
2706  *
2707  * Display real time information about the logical drives 0 through 9.
2708  */
2709 static int
2710 proc_show_rdrv_30(struct seq_file *m, void *v)
2711 {
2712         return proc_show_rdrv(m, m->private, 20, 29);
2713 }
2714
2715
2716 /**
2717  * proc_show_rdrv_40()
2718  * @m: Synthetic file construction data
2719  * @v: File iterator
2720  *
2721  * Display real time information about the logical drives 0 through 9.
2722  */
2723 static int
2724 proc_show_rdrv_40(struct seq_file *m, void *v)
2725 {
2726         return proc_show_rdrv(m, m->private, 30, 39);
2727 }
2728
2729 /**
2730  * mega_create_proc_entry()
2731  * @index: index in soft state array
2732  * @parent: parent node for this /proc entry
2733  *
2734  * Creates /proc entries for our controllers.
2735  */
2736 static void
2737 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2738 {
2739         adapter_t *adapter = hba_soft_state[index];
2740         struct proc_dir_entry *dir;
2741         u8 string[16];
2742
2743         sprintf(string, "hba%d", adapter->host->host_no);
2744         dir = proc_mkdir_data(string, 0, parent, adapter);
2745         if (!dir) {
2746                 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2747                 return;
2748         }
2749
2750         proc_create_single_data("config", S_IRUSR, dir,
2751                         proc_show_config, adapter);
2752         proc_create_single_data("stat", S_IRUSR, dir,
2753                         proc_show_stat, adapter);
2754         proc_create_single_data("mailbox", S_IRUSR, dir,
2755                         proc_show_mbox, adapter);
2756 #if MEGA_HAVE_ENH_PROC
2757         proc_create_single_data("rebuild-rate", S_IRUSR, dir,
2758                         proc_show_rebuild_rate, adapter);
2759         proc_create_single_data("battery-status", S_IRUSR, dir,
2760                         proc_show_battery, adapter);
2761         proc_create_single_data("diskdrives-ch0", S_IRUSR, dir,
2762                         proc_show_pdrv_ch0, adapter);
2763         proc_create_single_data("diskdrives-ch1", S_IRUSR, dir,
2764                         proc_show_pdrv_ch1, adapter);
2765         proc_create_single_data("diskdrives-ch2", S_IRUSR, dir,
2766                         proc_show_pdrv_ch2, adapter);
2767         proc_create_single_data("diskdrives-ch3", S_IRUSR, dir,
2768                         proc_show_pdrv_ch3, adapter);
2769         proc_create_single_data("raiddrives-0-9", S_IRUSR, dir,
2770                         proc_show_rdrv_10, adapter);
2771         proc_create_single_data("raiddrives-10-19", S_IRUSR, dir,
2772                         proc_show_rdrv_20, adapter);
2773         proc_create_single_data("raiddrives-20-29", S_IRUSR, dir,
2774                         proc_show_rdrv_30, adapter);
2775         proc_create_single_data("raiddrives-30-39", S_IRUSR, dir,
2776                         proc_show_rdrv_40, adapter);
2777 #endif
2778 }
2779
2780 #else
2781 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2782 {
2783 }
2784 #endif
2785
2786
2787 /*
2788  * megaraid_biosparam()
2789  *
2790  * Return the disk geometry for a particular disk
2791  */
2792 static int
2793 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2794                     sector_t capacity, int geom[])
2795 {
2796         adapter_t       *adapter;
2797         int     heads;
2798         int     sectors;
2799         int     cylinders;
2800
2801         /* Get pointer to host config structure */
2802         adapter = (adapter_t *)sdev->host->hostdata;
2803
2804         if (IS_RAID_CH(adapter, sdev->channel)) {
2805                         /* Default heads (64) & sectors (32) */
2806                         heads = 64;
2807                         sectors = 32;
2808                         cylinders = (ulong)capacity / (heads * sectors);
2809
2810                         /*
2811                          * Handle extended translation size for logical drives
2812                          * > 1Gb
2813                          */
2814                         if ((ulong)capacity >= 0x200000) {
2815                                 heads = 255;
2816                                 sectors = 63;
2817                                 cylinders = (ulong)capacity / (heads * sectors);
2818                         }
2819
2820                         /* return result */
2821                         geom[0] = heads;
2822                         geom[1] = sectors;
2823                         geom[2] = cylinders;
2824         }
2825         else {
2826                 if (scsi_partsize(bdev, capacity, geom))
2827                         return 0;
2828
2829                 dev_info(&adapter->dev->dev,
2830                          "invalid partition on this disk on channel %d\n",
2831                          sdev->channel);
2832
2833                 /* Default heads (64) & sectors (32) */
2834                 heads = 64;
2835                 sectors = 32;
2836                 cylinders = (ulong)capacity / (heads * sectors);
2837
2838                 /* Handle extended translation size for logical drives > 1Gb */
2839                 if ((ulong)capacity >= 0x200000) {
2840                         heads = 255;
2841                         sectors = 63;
2842                         cylinders = (ulong)capacity / (heads * sectors);
2843                 }
2844
2845                 /* return result */
2846                 geom[0] = heads;
2847                 geom[1] = sectors;
2848                 geom[2] = cylinders;
2849         }
2850
2851         return 0;
2852 }
2853
2854 /**
2855  * mega_init_scb()
2856  * @adapter: pointer to our soft state
2857  *
2858  * Allocate memory for the various pointers in the scb structures:
2859  * scatter-gather list pointer, passthru and extended passthru structure
2860  * pointers.
2861  */
2862 static int
2863 mega_init_scb(adapter_t *adapter)
2864 {
2865         scb_t   *scb;
2866         int     i;
2867
2868         for( i = 0; i < adapter->max_cmds; i++ ) {
2869
2870                 scb = &adapter->scb_list[i];
2871
2872                 scb->sgl64 = NULL;
2873                 scb->sgl = NULL;
2874                 scb->pthru = NULL;
2875                 scb->epthru = NULL;
2876         }
2877
2878         for( i = 0; i < adapter->max_cmds; i++ ) {
2879
2880                 scb = &adapter->scb_list[i];
2881
2882                 scb->idx = i;
2883
2884                 scb->sgl64 = pci_alloc_consistent(adapter->dev,
2885                                 sizeof(mega_sgl64) * adapter->sglen,
2886                                 &scb->sgl_dma_addr);
2887
2888                 scb->sgl = (mega_sglist *)scb->sgl64;
2889
2890                 if( !scb->sgl ) {
2891                         dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2892                         mega_free_sgl(adapter);
2893                         return -1;
2894                 }
2895
2896                 scb->pthru = pci_alloc_consistent(adapter->dev,
2897                                 sizeof(mega_passthru),
2898                                 &scb->pthru_dma_addr);
2899
2900                 if( !scb->pthru ) {
2901                         dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2902                         mega_free_sgl(adapter);
2903                         return -1;
2904                 }
2905
2906                 scb->epthru = pci_alloc_consistent(adapter->dev,
2907                                 sizeof(mega_ext_passthru),
2908                                 &scb->epthru_dma_addr);
2909
2910                 if( !scb->epthru ) {
2911                         dev_warn(&adapter->dev->dev,
2912                                 "Can't allocate extended passthru\n");
2913                         mega_free_sgl(adapter);
2914                         return -1;
2915                 }
2916
2917
2918                 scb->dma_type = MEGA_DMA_TYPE_NONE;
2919
2920                 /*
2921                  * Link to free list
2922                  * lock not required since we are loading the driver, so no
2923                  * commands possible right now.
2924                  */
2925                 scb->state = SCB_FREE;
2926                 scb->cmd = NULL;
2927                 list_add(&scb->list, &adapter->free_list);
2928         }
2929
2930         return 0;
2931 }
2932
2933
2934 /**
2935  * megadev_open()
2936  * @inode: unused
2937  * @filep: unused
2938  *
2939  * Routines for the character/ioctl interface to the driver. Find out if this
2940  * is a valid open.
2941  */
2942 static int
2943 megadev_open (struct inode *inode, struct file *filep)
2944 {
2945         /*
2946          * Only allow superuser to access private ioctl interface
2947          */
2948         if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2949
2950         return 0;
2951 }
2952
2953
2954 /**
2955  * megadev_ioctl()
2956  * @filep: Our device file
2957  * @cmd: ioctl command
2958  * @arg: user buffer
2959  *
2960  * ioctl entry point for our private ioctl interface. We move the data in from
2961  * the user space, prepare the command (if necessary, convert the old MIMD
2962  * ioctl to new ioctl command), and issue a synchronous command to the
2963  * controller.
2964  */
2965 static int
2966 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
2967 {
2968         adapter_t       *adapter;
2969         nitioctl_t      uioc;
2970         int             adapno;
2971         int             rval;
2972         mega_passthru   __user *upthru; /* user address for passthru */
2973         mega_passthru   *pthru;         /* copy user passthru here */
2974         dma_addr_t      pthru_dma_hndl;
2975         void            *data = NULL;   /* data to be transferred */
2976         dma_addr_t      data_dma_hndl;  /* dma handle for data xfer area */
2977         megacmd_t       mc;
2978 #if MEGA_HAVE_STATS
2979         megastat_t      __user *ustats = NULL;
2980         int             num_ldrv = 0;
2981 #endif
2982         u32             uxferaddr = 0;
2983         struct pci_dev  *pdev;
2984
2985         /*
2986          * Make sure only USCSICMD are issued through this interface.
2987          * MIMD application would still fire different command.
2988          */
2989         if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
2990                 return -EINVAL;
2991         }
2992
2993         /*
2994          * Check and convert a possible MIMD command to NIT command.
2995          * mega_m_to_n() copies the data from the user space, so we do not
2996          * have to do it here.
2997          * NOTE: We will need some user address to copyout the data, therefore
2998          * the inteface layer will also provide us with the required user
2999          * addresses.
3000          */
3001         memset(&uioc, 0, sizeof(nitioctl_t));
3002         if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3003                 return rval;
3004
3005
3006         switch( uioc.opcode ) {
3007
3008         case GET_DRIVER_VER:
3009                 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3010                         return (-EFAULT);
3011
3012                 break;
3013
3014         case GET_N_ADAP:
3015                 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3016                         return (-EFAULT);
3017
3018                 /*
3019                  * Shucks. MIMD interface returns a positive value for number
3020                  * of adapters. TODO: Change it to return 0 when there is no
3021                  * applicatio using mimd interface.
3022                  */
3023                 return hba_count;
3024
3025         case GET_ADAP_INFO:
3026
3027                 /*
3028                  * Which adapter
3029                  */
3030                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3031                         return (-ENODEV);
3032
3033                 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3034                                 sizeof(struct mcontroller)) )
3035                         return (-EFAULT);
3036                 break;
3037
3038 #if MEGA_HAVE_STATS
3039
3040         case GET_STATS:
3041                 /*
3042                  * Which adapter
3043                  */
3044                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3045                         return (-ENODEV);
3046
3047                 adapter = hba_soft_state[adapno];
3048
3049                 ustats = uioc.uioc_uaddr;
3050
3051                 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3052                         return (-EFAULT);
3053
3054                 /*
3055                  * Check for the validity of the logical drive number
3056                  */
3057                 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3058
3059                 if( copy_to_user(ustats->nreads, adapter->nreads,
3060                                         num_ldrv*sizeof(u32)) )
3061                         return -EFAULT;
3062
3063                 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3064                                         num_ldrv*sizeof(u32)) )
3065                         return -EFAULT;
3066
3067                 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3068                                         num_ldrv*sizeof(u32)) )
3069                         return -EFAULT;
3070
3071                 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3072                                         num_ldrv*sizeof(u32)) )
3073                         return -EFAULT;
3074
3075                 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3076                                         num_ldrv*sizeof(u32)) )
3077                         return -EFAULT;
3078
3079                 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3080                                         num_ldrv*sizeof(u32)) )
3081                         return -EFAULT;
3082
3083                 return 0;
3084
3085 #endif
3086         case MBOX_CMD:
3087
3088                 /*
3089                  * Which adapter
3090                  */
3091                 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3092                         return (-ENODEV);
3093
3094                 adapter = hba_soft_state[adapno];
3095
3096                 /*
3097                  * Deletion of logical drive is a special case. The adapter
3098                  * should be quiescent before this command is issued.
3099                  */
3100                 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3101                                 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3102
3103                         /*
3104                          * Do we support this feature
3105                          */
3106                         if( !adapter->support_random_del ) {
3107                                 dev_warn(&adapter->dev->dev, "logdrv "
3108                                         "delete on non-supporting F/W\n");
3109
3110                                 return (-EINVAL);
3111                         }
3112
3113                         rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3114
3115                         if( rval == 0 ) {
3116                                 memset(&mc, 0, sizeof(megacmd_t));
3117
3118                                 mc.status = rval;
3119
3120                                 rval = mega_n_to_m((void __user *)arg, &mc);
3121                         }
3122
3123                         return rval;
3124                 }
3125                 /*
3126                  * This interface only support the regular passthru commands.
3127                  * Reject extended passthru and 64-bit passthru
3128                  */
3129                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3130                         uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3131
3132                         dev_warn(&adapter->dev->dev, "rejected passthru\n");
3133
3134                         return (-EINVAL);
3135                 }
3136
3137                 /*
3138                  * For all internal commands, the buffer must be allocated in
3139                  * <4GB address range
3140                  */
3141                 if( make_local_pdev(adapter, &pdev) != 0 )
3142                         return -EIO;
3143
3144                 /* Is it a passthru command or a DCMD */
3145                 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3146                         /* Passthru commands */
3147
3148                         pthru = pci_alloc_consistent(pdev,
3149                                         sizeof(mega_passthru),
3150                                         &pthru_dma_hndl);
3151
3152                         if( pthru == NULL ) {
3153                                 free_local_pdev(pdev);
3154                                 return (-ENOMEM);
3155                         }
3156
3157                         /*
3158                          * The user passthru structure
3159                          */
3160                         upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3161
3162                         /*
3163                          * Copy in the user passthru here.
3164                          */
3165                         if( copy_from_user(pthru, upthru,
3166                                                 sizeof(mega_passthru)) ) {
3167
3168                                 pci_free_consistent(pdev,
3169                                                 sizeof(mega_passthru), pthru,
3170                                                 pthru_dma_hndl);
3171
3172                                 free_local_pdev(pdev);
3173
3174                                 return (-EFAULT);
3175                         }
3176
3177                         /*
3178                          * Is there a data transfer
3179                          */
3180                         if( pthru->dataxferlen ) {
3181                                 data = pci_alloc_consistent(pdev,
3182                                                 pthru->dataxferlen,
3183                                                 &data_dma_hndl);
3184
3185                                 if( data == NULL ) {
3186                                         pci_free_consistent(pdev,
3187                                                         sizeof(mega_passthru),
3188                                                         pthru,
3189                                                         pthru_dma_hndl);
3190
3191                                         free_local_pdev(pdev);
3192
3193                                         return (-ENOMEM);
3194                                 }
3195
3196                                 /*
3197                                  * Save the user address and point the kernel
3198                                  * address at just allocated memory
3199                                  */
3200                                 uxferaddr = pthru->dataxferaddr;
3201                                 pthru->dataxferaddr = data_dma_hndl;
3202                         }
3203
3204
3205                         /*
3206                          * Is data coming down-stream
3207                          */
3208                         if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3209                                 /*
3210                                  * Get the user data
3211                                  */
3212                                 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3213                                                         pthru->dataxferlen) ) {
3214                                         rval = (-EFAULT);
3215                                         goto freemem_and_return;
3216                                 }
3217                         }
3218
3219                         memset(&mc, 0, sizeof(megacmd_t));
3220
3221                         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3222                         mc.xferaddr = (u32)pthru_dma_hndl;
3223
3224                         /*
3225                          * Issue the command
3226                          */
3227                         mega_internal_command(adapter, &mc, pthru);
3228
3229                         rval = mega_n_to_m((void __user *)arg, &mc);
3230
3231                         if( rval ) goto freemem_and_return;
3232
3233
3234                         /*
3235                          * Is data going up-stream
3236                          */
3237                         if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3238                                 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3239                                                         pthru->dataxferlen) ) {
3240                                         rval = (-EFAULT);
3241                                 }
3242                         }
3243
3244                         /*
3245                          * Send the request sense data also, irrespective of
3246                          * whether the user has asked for it or not.
3247                          */
3248                         if (copy_to_user(upthru->reqsensearea,
3249                                         pthru->reqsensearea, 14))
3250                                 rval = -EFAULT;
3251
3252 freemem_and_return:
3253                         if( pthru->dataxferlen ) {
3254                                 pci_free_consistent(pdev,
3255                                                 pthru->dataxferlen, data,
3256                                                 data_dma_hndl);
3257                         }
3258
3259                         pci_free_consistent(pdev, sizeof(mega_passthru),
3260                                         pthru, pthru_dma_hndl);
3261
3262                         free_local_pdev(pdev);
3263
3264                         return rval;
3265                 }
3266                 else {
3267                         /* DCMD commands */
3268
3269                         /*
3270                          * Is there a data transfer
3271                          */
3272                         if( uioc.xferlen ) {
3273                                 data = pci_alloc_consistent(pdev,
3274                                                 uioc.xferlen, &data_dma_hndl);
3275
3276                                 if( data == NULL ) {
3277                                         free_local_pdev(pdev);
3278                                         return (-ENOMEM);
3279                                 }
3280
3281                                 uxferaddr = MBOX(uioc)->xferaddr;
3282                         }
3283
3284                         /*
3285                          * Is data coming down-stream
3286                          */
3287                         if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3288                                 /*
3289                                  * Get the user data
3290                                  */
3291                                 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3292                                                         uioc.xferlen) ) {
3293
3294                                         pci_free_consistent(pdev,
3295                                                         uioc.xferlen,
3296                                                         data, data_dma_hndl);
3297
3298                                         free_local_pdev(pdev);
3299
3300                                         return (-EFAULT);
3301                                 }
3302                         }
3303
3304                         memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3305
3306                         mc.xferaddr = (u32)data_dma_hndl;
3307
3308                         /*
3309                          * Issue the command
3310                          */
3311                         mega_internal_command(adapter, &mc, NULL);
3312
3313                         rval = mega_n_to_m((void __user *)arg, &mc);
3314
3315                         if( rval ) {
3316                                 if( uioc.xferlen ) {
3317                                         pci_free_consistent(pdev,
3318                                                         uioc.xferlen, data,
3319                                                         data_dma_hndl);
3320                                 }
3321
3322                                 free_local_pdev(pdev);
3323
3324                                 return rval;
3325                         }
3326
3327                         /*
3328                          * Is data going up-stream
3329                          */
3330                         if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3331                                 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3332                                                         uioc.xferlen) ) {
3333
3334                                         rval = (-EFAULT);
3335                                 }
3336                         }
3337
3338                         if( uioc.xferlen ) {
3339                                 pci_free_consistent(pdev,
3340                                                 uioc.xferlen, data,
3341                                                 data_dma_hndl);
3342                         }
3343
3344                         free_local_pdev(pdev);
3345
3346                         return rval;
3347                 }
3348
3349         default:
3350                 return (-EINVAL);
3351         }
3352
3353         return 0;
3354 }
3355
3356 static long
3357 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3358 {
3359         int ret;
3360
3361         mutex_lock(&megadev_mutex);
3362         ret = megadev_ioctl(filep, cmd, arg);
3363         mutex_unlock(&megadev_mutex);
3364
3365         return ret;
3366 }
3367
3368 /**
3369  * mega_m_to_n()
3370  * @arg: user address
3371  * @uioc: new ioctl structure
3372  *
3373  * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3374  * structure
3375  *
3376  * Converts the older mimd ioctl structure to newer NIT structure
3377  */
3378 static int
3379 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3380 {
3381         struct uioctl_t uioc_mimd;
3382         char    signature[8] = {0};
3383         u8      opcode;
3384         u8      subopcode;
3385
3386
3387         /*
3388          * check is the application conforms to NIT. We do not have to do much
3389          * in that case.
3390          * We exploit the fact that the signature is stored in the very
3391          * beginning of the structure.
3392          */
3393
3394         if( copy_from_user(signature, arg, 7) )
3395                 return (-EFAULT);
3396
3397         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3398
3399                 /*
3400                  * NOTE NOTE: The nit ioctl is still under flux because of
3401                  * change of mailbox definition, in HPE. No applications yet
3402                  * use this interface and let's not have applications use this
3403                  * interface till the new specifitions are in place.
3404                  */
3405                 return -EINVAL;
3406 #if 0
3407                 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3408                         return (-EFAULT);
3409                 return 0;
3410 #endif
3411         }
3412
3413         /*
3414          * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3415          *
3416          * Get the user ioctl structure
3417          */
3418         if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3419                 return (-EFAULT);
3420
3421
3422         /*
3423          * Get the opcode and subopcode for the commands
3424          */
3425         opcode = uioc_mimd.ui.fcs.opcode;
3426         subopcode = uioc_mimd.ui.fcs.subopcode;
3427
3428         switch (opcode) {
3429         case 0x82:
3430
3431                 switch (subopcode) {
3432
3433                 case MEGAIOC_QDRVRVER:  /* Query driver version */
3434                         uioc->opcode = GET_DRIVER_VER;
3435                         uioc->uioc_uaddr = uioc_mimd.data;
3436                         break;
3437
3438                 case MEGAIOC_QNADAP:    /* Get # of adapters */
3439                         uioc->opcode = GET_N_ADAP;
3440                         uioc->uioc_uaddr = uioc_mimd.data;
3441                         break;
3442
3443                 case MEGAIOC_QADAPINFO: /* Get adapter information */
3444                         uioc->opcode = GET_ADAP_INFO;
3445                         uioc->adapno = uioc_mimd.ui.fcs.adapno;
3446                         uioc->uioc_uaddr = uioc_mimd.data;
3447                         break;
3448
3449                 default:
3450                         return(-EINVAL);
3451                 }
3452
3453                 break;
3454
3455
3456         case 0x81:
3457
3458                 uioc->opcode = MBOX_CMD;
3459                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3460
3461                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3462
3463                 uioc->xferlen = uioc_mimd.ui.fcs.length;
3464
3465                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3466                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3467
3468                 break;
3469
3470         case 0x80:
3471
3472                 uioc->opcode = MBOX_CMD;
3473                 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3474
3475                 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3476
3477                 /*
3478                  * Choose the xferlen bigger of input and output data
3479                  */
3480                 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3481                         uioc_mimd.outlen : uioc_mimd.inlen;
3482
3483                 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3484                 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3485
3486                 break;
3487
3488         default:
3489                 return (-EINVAL);
3490
3491         }
3492
3493         return 0;
3494 }
3495
3496 /*
3497  * mega_n_to_m()
3498  * @arg: user address
3499  * @mc: mailbox command
3500  *
3501  * Updates the status information to the application, depending on application
3502  * conforms to older mimd ioctl interface or newer NIT ioctl interface
3503  */
3504 static int
3505 mega_n_to_m(void __user *arg, megacmd_t *mc)
3506 {
3507         nitioctl_t      __user *uiocp;
3508         megacmd_t       __user *umc;
3509         mega_passthru   __user *upthru;
3510         struct uioctl_t __user *uioc_mimd;
3511         char    signature[8] = {0};
3512
3513         /*
3514          * check is the application conforms to NIT.
3515          */
3516         if( copy_from_user(signature, arg, 7) )
3517                 return -EFAULT;
3518
3519         if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3520
3521                 uiocp = arg;
3522
3523                 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3524                         return (-EFAULT);
3525
3526                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3527
3528                         umc = MBOX_P(uiocp);
3529
3530                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3531                                 return -EFAULT;
3532
3533                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3534                                 return (-EFAULT);
3535                 }
3536         }
3537         else {
3538                 uioc_mimd = arg;
3539
3540                 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3541                         return (-EFAULT);
3542
3543                 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3544
3545                         umc = (megacmd_t __user *)uioc_mimd->mbox;
3546
3547                         if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3548                                 return (-EFAULT);
3549
3550                         if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3551                                 return (-EFAULT);
3552                 }
3553         }
3554
3555         return 0;
3556 }
3557
3558
3559 /*
3560  * MEGARAID 'FW' commands.
3561  */
3562
3563 /**
3564  * mega_is_bios_enabled()
3565  * @adapter: pointer to our soft state
3566  *
3567  * issue command to find out if the BIOS is enabled for this controller
3568  */
3569 static int
3570 mega_is_bios_enabled(adapter_t *adapter)
3571 {
3572         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3573         mbox_t  *mbox;
3574
3575         mbox = (mbox_t *)raw_mbox;
3576
3577         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3578
3579         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3580
3581         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3582
3583         raw_mbox[0] = IS_BIOS_ENABLED;
3584         raw_mbox[2] = GET_BIOS;
3585
3586         issue_scb_block(adapter, raw_mbox);
3587
3588         return *(char *)adapter->mega_buffer;
3589 }
3590
3591
3592 /**
3593  * mega_enum_raid_scsi()
3594  * @adapter: pointer to our soft state
3595  *
3596  * Find out what channels are RAID/SCSI. This information is used to
3597  * differentiate the virtual channels and physical channels and to support
3598  * ROMB feature and non-disk devices.
3599  */
3600 static void
3601 mega_enum_raid_scsi(adapter_t *adapter)
3602 {
3603         unsigned char raw_mbox[sizeof(struct mbox_out)];
3604         mbox_t *mbox;
3605         int i;
3606
3607         mbox = (mbox_t *)raw_mbox;
3608
3609         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3610
3611         /*
3612          * issue command to find out what channels are raid/scsi
3613          */
3614         raw_mbox[0] = CHNL_CLASS;
3615         raw_mbox[2] = GET_CHNL_CLASS;
3616
3617         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3618
3619         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3620
3621         /*
3622          * Non-ROMB firmware fail this command, so all channels
3623          * must be shown RAID
3624          */
3625         adapter->mega_ch_class = 0xFF;
3626
3627         if(!issue_scb_block(adapter, raw_mbox)) {
3628                 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3629
3630         }
3631
3632         for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3633                 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3634                         dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3635                                         i);
3636                 }
3637                 else {
3638                         dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3639                                         i);
3640                 }
3641         }
3642
3643         return;
3644 }
3645
3646
3647 /**
3648  * mega_get_boot_drv()
3649  * @adapter: pointer to our soft state
3650  *
3651  * Find out which device is the boot device. Note, any logical drive or any
3652  * phyical device (e.g., a CDROM) can be designated as a boot device.
3653  */
3654 static void
3655 mega_get_boot_drv(adapter_t *adapter)
3656 {
3657         struct private_bios_data        *prv_bios_data;
3658         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3659         mbox_t  *mbox;
3660         u16     cksum = 0;
3661         u8      *cksum_p;
3662         u8      boot_pdrv;
3663         int     i;
3664
3665         mbox = (mbox_t *)raw_mbox;
3666
3667         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3668
3669         raw_mbox[0] = BIOS_PVT_DATA;
3670         raw_mbox[2] = GET_BIOS_PVT_DATA;
3671
3672         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3673
3674         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3675
3676         adapter->boot_ldrv_enabled = 0;
3677         adapter->boot_ldrv = 0;
3678
3679         adapter->boot_pdrv_enabled = 0;
3680         adapter->boot_pdrv_ch = 0;
3681         adapter->boot_pdrv_tgt = 0;
3682
3683         if(issue_scb_block(adapter, raw_mbox) == 0) {
3684                 prv_bios_data =
3685                         (struct private_bios_data *)adapter->mega_buffer;
3686
3687                 cksum = 0;
3688                 cksum_p = (char *)prv_bios_data;
3689                 for (i = 0; i < 14; i++ ) {
3690                         cksum += (u16)(*cksum_p++);
3691                 }
3692
3693                 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3694
3695                         /*
3696                          * If MSB is set, a physical drive is set as boot
3697                          * device
3698                          */
3699                         if( prv_bios_data->boot_drv & 0x80 ) {
3700                                 adapter->boot_pdrv_enabled = 1;
3701                                 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3702                                 adapter->boot_pdrv_ch = boot_pdrv / 16;
3703                                 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3704                         }
3705                         else {
3706                                 adapter->boot_ldrv_enabled = 1;
3707                                 adapter->boot_ldrv = prv_bios_data->boot_drv;
3708                         }
3709                 }
3710         }
3711
3712 }
3713
3714 /**
3715  * mega_support_random_del()
3716  * @adapter: pointer to our soft state
3717  *
3718  * Find out if this controller supports random deletion and addition of
3719  * logical drives
3720  */
3721 static int
3722 mega_support_random_del(adapter_t *adapter)
3723 {
3724         unsigned char raw_mbox[sizeof(struct mbox_out)];
3725         mbox_t *mbox;
3726         int rval;
3727
3728         mbox = (mbox_t *)raw_mbox;
3729
3730         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3731
3732         /*
3733          * issue command
3734          */
3735         raw_mbox[0] = FC_DEL_LOGDRV;
3736         raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3737
3738         rval = issue_scb_block(adapter, raw_mbox);
3739
3740         return !rval;
3741 }
3742
3743
3744 /**
3745  * mega_support_ext_cdb()
3746  * @adapter: pointer to our soft state
3747  *
3748  * Find out if this firmware support cdblen > 10
3749  */
3750 static int
3751 mega_support_ext_cdb(adapter_t *adapter)
3752 {
3753         unsigned char raw_mbox[sizeof(struct mbox_out)];
3754         mbox_t *mbox;
3755         int rval;
3756
3757         mbox = (mbox_t *)raw_mbox;
3758
3759         memset(&mbox->m_out, 0, sizeof(raw_mbox));
3760         /*
3761          * issue command to find out if controller supports extended CDBs.
3762          */
3763         raw_mbox[0] = 0xA4;
3764         raw_mbox[2] = 0x16;
3765
3766         rval = issue_scb_block(adapter, raw_mbox);
3767
3768         return !rval;
3769 }
3770
3771
3772 /**
3773  * mega_del_logdrv()
3774  * @adapter: pointer to our soft state
3775  * @logdrv: logical drive to be deleted
3776  *
3777  * Delete the specified logical drive. It is the responsibility of the user
3778  * app to let the OS know about this operation.
3779  */
3780 static int
3781 mega_del_logdrv(adapter_t *adapter, int logdrv)
3782 {
3783         unsigned long flags;
3784         scb_t *scb;
3785         int rval;
3786
3787         /*
3788          * Stop sending commands to the controller, queue them internally.
3789          * When deletion is complete, ISR will flush the queue.
3790          */
3791         atomic_set(&adapter->quiescent, 1);
3792
3793         /*
3794          * Wait till all the issued commands are complete and there are no
3795          * commands in the pending queue
3796          */
3797         while (atomic_read(&adapter->pend_cmds) > 0 ||
3798                !list_empty(&adapter->pending_list))
3799                 msleep(1000);   /* sleep for 1s */
3800
3801         rval = mega_do_del_logdrv(adapter, logdrv);
3802
3803         spin_lock_irqsave(&adapter->lock, flags);
3804
3805         /*
3806          * If delete operation was successful, add 0x80 to the logical drive
3807          * ids for commands in the pending queue.
3808          */
3809         if (adapter->read_ldidmap) {
3810                 struct list_head *pos;
3811                 list_for_each(pos, &adapter->pending_list) {
3812                         scb = list_entry(pos, scb_t, list);
3813                         if (scb->pthru->logdrv < 0x80 )
3814                                 scb->pthru->logdrv += 0x80;
3815                 }
3816         }
3817
3818         atomic_set(&adapter->quiescent, 0);
3819
3820         mega_runpendq(adapter);
3821
3822         spin_unlock_irqrestore(&adapter->lock, flags);
3823
3824         return rval;
3825 }
3826
3827
3828 static int
3829 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3830 {
3831         megacmd_t       mc;
3832         int     rval;
3833
3834         memset( &mc, 0, sizeof(megacmd_t));
3835
3836         mc.cmd = FC_DEL_LOGDRV;
3837         mc.opcode = OP_DEL_LOGDRV;
3838         mc.subopcode = logdrv;
3839
3840         rval = mega_internal_command(adapter, &mc, NULL);
3841
3842         /* log this event */
3843         if(rval) {
3844                 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3845                 return rval;
3846         }
3847
3848         /*
3849          * After deleting first logical drive, the logical drives must be
3850          * addressed by adding 0x80 to the logical drive id.
3851          */
3852         adapter->read_ldidmap = 1;
3853
3854         return rval;
3855 }
3856
3857
3858 /**
3859  * mega_get_max_sgl()
3860  * @adapter: pointer to our soft state
3861  *
3862  * Find out the maximum number of scatter-gather elements supported by this
3863  * version of the firmware
3864  */
3865 static void
3866 mega_get_max_sgl(adapter_t *adapter)
3867 {
3868         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3869         mbox_t  *mbox;
3870
3871         mbox = (mbox_t *)raw_mbox;
3872
3873         memset(mbox, 0, sizeof(raw_mbox));
3874
3875         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3876
3877         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3878
3879         raw_mbox[0] = MAIN_MISC_OPCODE;
3880         raw_mbox[2] = GET_MAX_SG_SUPPORT;
3881
3882
3883         if( issue_scb_block(adapter, raw_mbox) ) {
3884                 /*
3885                  * f/w does not support this command. Choose the default value
3886                  */
3887                 adapter->sglen = MIN_SGLIST;
3888         }
3889         else {
3890                 adapter->sglen = *((char *)adapter->mega_buffer);
3891
3892                 /*
3893                  * Make sure this is not more than the resources we are
3894                  * planning to allocate
3895                  */
3896                 if ( adapter->sglen > MAX_SGLIST )
3897                         adapter->sglen = MAX_SGLIST;
3898         }
3899
3900         return;
3901 }
3902
3903
3904 /**
3905  * mega_support_cluster()
3906  * @adapter: pointer to our soft state
3907  *
3908  * Find out if this firmware support cluster calls.
3909  */
3910 static int
3911 mega_support_cluster(adapter_t *adapter)
3912 {
3913         unsigned char   raw_mbox[sizeof(struct mbox_out)];
3914         mbox_t  *mbox;
3915
3916         mbox = (mbox_t *)raw_mbox;
3917
3918         memset(mbox, 0, sizeof(raw_mbox));
3919
3920         memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3921
3922         mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3923
3924         /*
3925          * Try to get the initiator id. This command will succeed iff the
3926          * clustering is available on this HBA.
3927          */
3928         raw_mbox[0] = MEGA_GET_TARGET_ID;
3929
3930         if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3931
3932                 /*
3933                  * Cluster support available. Get the initiator target id.
3934                  * Tell our id to mid-layer too.
3935                  */
3936                 adapter->this_id = *(u32 *)adapter->mega_buffer;
3937                 adapter->host->this_id = adapter->this_id;
3938
3939                 return 1;
3940         }
3941
3942         return 0;
3943 }
3944
3945 #ifdef CONFIG_PROC_FS
3946 /**
3947  * mega_adapinq()
3948  * @adapter: pointer to our soft state
3949  * @dma_handle: DMA address of the buffer
3950  *
3951  * Issue internal commands while interrupts are available.
3952  * We only issue direct mailbox commands from within the driver. ioctl()
3953  * interface using these routines can issue passthru commands.
3954  */
3955 static int
3956 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
3957 {
3958         megacmd_t       mc;
3959
3960         memset(&mc, 0, sizeof(megacmd_t));
3961
3962         if( adapter->flag & BOARD_40LD ) {
3963                 mc.cmd = FC_NEW_CONFIG;
3964                 mc.opcode = NC_SUBOP_ENQUIRY3;
3965                 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
3966         }
3967         else {
3968                 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
3969         }
3970
3971         mc.xferaddr = (u32)dma_handle;
3972
3973         if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
3974                 return -1;
3975         }
3976
3977         return 0;
3978 }
3979
3980
3981 /**
3982  * mega_internal_dev_inquiry()
3983  * @adapter: pointer to our soft state
3984  * @ch: channel for this device
3985  * @tgt: ID of this device
3986  * @buf_dma_handle: DMA address of the buffer
3987  *
3988  * Issue the scsi inquiry for the specified device.
3989  */
3990 static int
3991 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
3992                 dma_addr_t buf_dma_handle)
3993 {
3994         mega_passthru   *pthru;
3995         dma_addr_t      pthru_dma_handle;
3996         megacmd_t       mc;
3997         int             rval;
3998         struct pci_dev  *pdev;
3999
4000
4001         /*
4002          * For all internal commands, the buffer must be allocated in <4GB
4003          * address range
4004          */
4005         if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4006
4007         pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4008                         &pthru_dma_handle);
4009
4010         if( pthru == NULL ) {
4011                 free_local_pdev(pdev);
4012                 return -1;
4013         }
4014
4015         pthru->timeout = 2;
4016         pthru->ars = 1;
4017         pthru->reqsenselen = 14;
4018         pthru->islogical = 0;
4019
4020         pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4021
4022         pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4023
4024         pthru->cdblen = 6;
4025
4026         pthru->cdb[0] = INQUIRY;
4027         pthru->cdb[1] = 0;
4028         pthru->cdb[2] = 0;
4029         pthru->cdb[3] = 0;
4030         pthru->cdb[4] = 255;
4031         pthru->cdb[5] = 0;
4032
4033
4034         pthru->dataxferaddr = (u32)buf_dma_handle;
4035         pthru->dataxferlen = 256;
4036
4037         memset(&mc, 0, sizeof(megacmd_t));
4038
4039         mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4040         mc.xferaddr = (u32)pthru_dma_handle;
4041
4042         rval = mega_internal_command(adapter, &mc, pthru);
4043
4044         pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4045                         pthru_dma_handle);
4046
4047         free_local_pdev(pdev);
4048
4049         return rval;
4050 }
4051 #endif
4052
4053 /**
4054  * mega_internal_command()
4055  * @adapter: pointer to our soft state
4056  * @mc: the mailbox command
4057  * @pthru: Passthru structure for DCDB commands
4058  *
4059  * Issue the internal commands in interrupt mode.
4060  * The last argument is the address of the passthru structure if the command
4061  * to be fired is a passthru command
4062  *
4063  * Note: parameter 'pthru' is null for non-passthru commands.
4064  */
4065 static int
4066 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4067 {
4068         unsigned long flags;
4069         scb_t   *scb;
4070         int     rval;
4071
4072         /*
4073          * The internal commands share one command id and hence are
4074          * serialized. This is so because we want to reserve maximum number of
4075          * available command ids for the I/O commands.
4076          */
4077         mutex_lock(&adapter->int_mtx);
4078
4079         scb = &adapter->int_scb;
4080         memset(scb, 0, sizeof(scb_t));
4081
4082         scb->idx = CMDID_INT_CMDS;
4083         scb->state |= SCB_ACTIVE | SCB_PENDQ;
4084
4085         memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4086
4087         /*
4088          * Is it a passthru command
4089          */
4090         if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4091                 scb->pthru = pthru;
4092
4093         spin_lock_irqsave(&adapter->lock, flags);
4094         list_add_tail(&scb->list, &adapter->pending_list);
4095         /*
4096          * Check if the HBA is in quiescent state, e.g., during a
4097          * delete logical drive opertion. If it is, don't run
4098          * the pending_list.
4099          */
4100         if (atomic_read(&adapter->quiescent) == 0)
4101                 mega_runpendq(adapter);
4102         spin_unlock_irqrestore(&adapter->lock, flags);
4103
4104         wait_for_completion(&adapter->int_waitq);
4105
4106         mc->status = rval = adapter->int_status;
4107
4108         /*
4109          * Print a debug message for all failed commands. Applications can use
4110          * this information.
4111          */
4112         if (rval && trace_level) {
4113                 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4114                         mc->cmd, mc->opcode, mc->subopcode, rval);
4115         }
4116
4117         mutex_unlock(&adapter->int_mtx);
4118         return rval;
4119 }
4120
4121 static struct scsi_host_template megaraid_template = {
4122         .module                         = THIS_MODULE,
4123         .name                           = "MegaRAID",
4124         .proc_name                      = "megaraid_legacy",
4125         .info                           = megaraid_info,
4126         .queuecommand                   = megaraid_queue,
4127         .bios_param                     = megaraid_biosparam,
4128         .max_sectors                    = MAX_SECTORS_PER_IO,
4129         .can_queue                      = MAX_COMMANDS,
4130         .this_id                        = DEFAULT_INITIATOR_ID,
4131         .sg_tablesize                   = MAX_SGLIST,
4132         .cmd_per_lun                    = DEF_CMD_PER_LUN,
4133         .eh_abort_handler               = megaraid_abort,
4134         .eh_device_reset_handler        = megaraid_reset,
4135         .eh_bus_reset_handler           = megaraid_reset,
4136         .eh_host_reset_handler          = megaraid_reset,
4137         .no_write_same                  = 1,
4138 };
4139
4140 static int
4141 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4142 {
4143         struct Scsi_Host *host;
4144         adapter_t *adapter;
4145         unsigned long mega_baseport, tbase, flag = 0;
4146         u16 subsysid, subsysvid;
4147         u8 pci_bus, pci_dev_func;
4148         int irq, i, j;
4149         int error = -ENODEV;
4150
4151         if (hba_count >= MAX_CONTROLLERS)
4152                 goto out;
4153
4154         if (pci_enable_device(pdev))
4155                 goto out;
4156         pci_set_master(pdev);
4157
4158         pci_bus = pdev->bus->number;
4159         pci_dev_func = pdev->devfn;
4160
4161         /*
4162          * The megaraid3 stuff reports the ID of the Intel part which is not
4163          * remotely specific to the megaraid
4164          */
4165         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4166                 u16 magic;
4167                 /*
4168                  * Don't fall over the Compaq management cards using the same
4169                  * PCI identifier
4170                  */
4171                 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4172                     pdev->subsystem_device == 0xC000)
4173                         goto out_disable_device;
4174                 /* Now check the magic signature byte */
4175                 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4176                 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4177                         goto out_disable_device;
4178                 /* Ok it is probably a megaraid */
4179         }
4180
4181         /*
4182          * For these vendor and device ids, signature offsets are not
4183          * valid and 64 bit is implicit
4184          */
4185         if (id->driver_data & BOARD_64BIT)
4186                 flag |= BOARD_64BIT;
4187         else {
4188                 u32 magic64;
4189
4190                 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4191                 if (magic64 == HBA_SIGNATURE_64BIT)
4192                         flag |= BOARD_64BIT;
4193         }
4194
4195         subsysvid = pdev->subsystem_vendor;
4196         subsysid = pdev->subsystem_device;
4197
4198         dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4199                 id->vendor, id->device);
4200
4201         /* Read the base port and IRQ from PCI */
4202         mega_baseport = pci_resource_start(pdev, 0);
4203         irq = pdev->irq;
4204
4205         tbase = mega_baseport;
4206         if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4207                 flag |= BOARD_MEMMAP;
4208
4209                 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4210                         dev_warn(&pdev->dev, "mem region busy!\n");
4211                         goto out_disable_device;
4212                 }
4213
4214                 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4215                 if (!mega_baseport) {
4216                         dev_warn(&pdev->dev, "could not map hba memory\n");
4217                         goto out_release_region;
4218                 }
4219         } else {
4220                 flag |= BOARD_IOMAP;
4221                 mega_baseport += 0x10;
4222
4223                 if (!request_region(mega_baseport, 16, "megaraid"))
4224                         goto out_disable_device;
4225         }
4226
4227         /* Initialize SCSI Host structure */
4228         host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4229         if (!host)
4230                 goto out_iounmap;
4231
4232         adapter = (adapter_t *)host->hostdata;
4233         memset(adapter, 0, sizeof(adapter_t));
4234
4235         dev_notice(&pdev->dev,
4236                 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4237                 host->host_no, mega_baseport, irq);
4238
4239         adapter->base = mega_baseport;
4240         if (flag & BOARD_MEMMAP)
4241                 adapter->mmio_base = (void __iomem *) mega_baseport;
4242
4243         INIT_LIST_HEAD(&adapter->free_list);
4244         INIT_LIST_HEAD(&adapter->pending_list);
4245         INIT_LIST_HEAD(&adapter->completed_list);
4246
4247         adapter->flag = flag;
4248         spin_lock_init(&adapter->lock);
4249
4250         host->cmd_per_lun = max_cmd_per_lun;
4251         host->max_sectors = max_sectors_per_io;
4252
4253         adapter->dev = pdev;
4254         adapter->host = host;
4255
4256         adapter->host->irq = irq;
4257
4258         if (flag & BOARD_MEMMAP)
4259                 adapter->host->base = tbase;
4260         else {
4261                 adapter->host->io_port = tbase;
4262                 adapter->host->n_io_port = 16;
4263         }
4264
4265         adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4266
4267         /*
4268          * Allocate buffer to issue internal commands.
4269          */
4270         adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4271                 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4272         if (!adapter->mega_buffer) {
4273                 dev_warn(&pdev->dev, "out of RAM\n");
4274                 goto out_host_put;
4275         }
4276
4277         adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t),
4278                                           GFP_KERNEL);
4279         if (!adapter->scb_list) {
4280                 dev_warn(&pdev->dev, "out of RAM\n");
4281                 goto out_free_cmd_buffer;
4282         }
4283
4284         if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4285                                 megaraid_isr_memmapped : megaraid_isr_iomapped,
4286                                         IRQF_SHARED, "megaraid", adapter)) {
4287                 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4288                 goto out_free_scb_list;
4289         }
4290
4291         if (mega_setup_mailbox(adapter))
4292                 goto out_free_irq;
4293
4294         if (mega_query_adapter(adapter))
4295                 goto out_free_mbox;
4296
4297         /*
4298          * Have checks for some buggy f/w
4299          */
4300         if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4301                 /*
4302                  * Which firmware
4303                  */
4304                 if (!strcmp(adapter->fw_version, "3.00") ||
4305                                 !strcmp(adapter->fw_version, "3.01")) {
4306
4307                         dev_warn(&pdev->dev,
4308                                 "Your card is a Dell PERC "
4309                                 "2/SC RAID controller with "
4310                                 "firmware\nmegaraid: 3.00 or 3.01.  "
4311                                 "This driver is known to have "
4312                                 "corruption issues\nmegaraid: with "
4313                                 "those firmware versions on this "
4314                                 "specific card.  In order\nmegaraid: "
4315                                 "to protect your data, please upgrade "
4316                                 "your firmware to version\nmegaraid: "
4317                                 "3.10 or later, available from the "
4318                                 "Dell Technical Support web\n"
4319                                 "megaraid: site at\nhttp://support."
4320                                 "dell.com/us/en/filelib/download/"
4321                                 "index.asp?fileid=2940\n"
4322                         );
4323                 }
4324         }
4325
4326         /*
4327          * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4328          * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4329          * support, since this firmware cannot handle 64 bit
4330          * addressing
4331          */
4332         if ((subsysvid == PCI_VENDOR_ID_HP) &&
4333             ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4334                 /*
4335                  * which firmware
4336                  */
4337                 if (!strcmp(adapter->fw_version, "H01.07") ||
4338                     !strcmp(adapter->fw_version, "H01.08") ||
4339                     !strcmp(adapter->fw_version, "H01.09") ) {
4340                         dev_warn(&pdev->dev,
4341                                 "Firmware H.01.07, "
4342                                 "H.01.08, and H.01.09 on 1M/2M "
4343                                 "controllers\n"
4344                                 "do not support 64 bit "
4345                                 "addressing.\nDISABLING "
4346                                 "64 bit support.\n");
4347                         adapter->flag &= ~BOARD_64BIT;
4348                 }
4349         }
4350
4351         if (mega_is_bios_enabled(adapter))
4352                 mega_hbas[hba_count].is_bios_enabled = 1;
4353         mega_hbas[hba_count].hostdata_addr = adapter;
4354
4355         /*
4356          * Find out which channel is raid and which is scsi. This is
4357          * for ROMB support.
4358          */
4359         mega_enum_raid_scsi(adapter);
4360
4361         /*
4362          * Find out if a logical drive is set as the boot drive. If
4363          * there is one, will make that as the first logical drive.
4364          * ROMB: Do we have to boot from a physical drive. Then all
4365          * the physical drives would appear before the logical disks.
4366          * Else, all the physical drives would be exported to the mid
4367          * layer after logical drives.
4368          */
4369         mega_get_boot_drv(adapter);
4370
4371         if (adapter->boot_pdrv_enabled) {
4372                 j = adapter->product_info.nchannels;
4373                 for( i = 0; i < j; i++ )
4374                         adapter->logdrv_chan[i] = 0;
4375                 for( i = j; i < NVIRT_CHAN + j; i++ )
4376                         adapter->logdrv_chan[i] = 1;
4377         } else {
4378                 for (i = 0; i < NVIRT_CHAN; i++)
4379                         adapter->logdrv_chan[i] = 1;
4380                 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4381                         adapter->logdrv_chan[i] = 0;
4382                 adapter->mega_ch_class <<= NVIRT_CHAN;
4383         }
4384
4385         /*
4386          * Do we support random deletion and addition of logical
4387          * drives
4388          */
4389         adapter->read_ldidmap = 0;      /* set it after first logdrv
4390                                                    delete cmd */
4391         adapter->support_random_del = mega_support_random_del(adapter);
4392
4393         /* Initialize SCBs */
4394         if (mega_init_scb(adapter))
4395                 goto out_free_mbox;
4396
4397         /*
4398          * Reset the pending commands counter
4399          */
4400         atomic_set(&adapter->pend_cmds, 0);
4401
4402         /*
4403          * Reset the adapter quiescent flag
4404          */
4405         atomic_set(&adapter->quiescent, 0);
4406
4407         hba_soft_state[hba_count] = adapter;
4408
4409         /*
4410          * Fill in the structure which needs to be passed back to the
4411          * application when it does an ioctl() for controller related
4412          * information.
4413          */
4414         i = hba_count;
4415
4416         mcontroller[i].base = mega_baseport;
4417         mcontroller[i].irq = irq;
4418         mcontroller[i].numldrv = adapter->numldrv;
4419         mcontroller[i].pcibus = pci_bus;
4420         mcontroller[i].pcidev = id->device;
4421         mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4422         mcontroller[i].pciid = -1;
4423         mcontroller[i].pcivendor = id->vendor;
4424         mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4425         mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4426
4427
4428         /* Set the Mode of addressing to 64 bit if we can */
4429         if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4430                 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4431                 adapter->has_64bit_addr = 1;
4432         } else  {
4433                 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4434                 adapter->has_64bit_addr = 0;
4435         }
4436
4437         mutex_init(&adapter->int_mtx);
4438         init_completion(&adapter->int_waitq);
4439
4440         adapter->this_id = DEFAULT_INITIATOR_ID;
4441         adapter->host->this_id = DEFAULT_INITIATOR_ID;
4442
4443 #if MEGA_HAVE_CLUSTERING
4444         /*
4445          * Is cluster support enabled on this controller
4446          * Note: In a cluster the HBAs ( the initiators ) will have
4447          * different target IDs and we cannot assume it to be 7. Call
4448          * to mega_support_cluster() will get the target ids also if
4449          * the cluster support is available
4450          */
4451         adapter->has_cluster = mega_support_cluster(adapter);
4452         if (adapter->has_cluster) {
4453                 dev_notice(&pdev->dev,
4454                         "Cluster driver, initiator id:%d\n",
4455                         adapter->this_id);
4456         }
4457 #endif
4458
4459         pci_set_drvdata(pdev, host);
4460
4461         mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4462
4463         error = scsi_add_host(host, &pdev->dev);
4464         if (error)
4465                 goto out_free_mbox;
4466
4467         scsi_scan_host(host);
4468         hba_count++;
4469         return 0;
4470
4471  out_free_mbox:
4472         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4473                         adapter->una_mbox64, adapter->una_mbox64_dma);
4474  out_free_irq:
4475         free_irq(adapter->host->irq, adapter);
4476  out_free_scb_list:
4477         kfree(adapter->scb_list);
4478  out_free_cmd_buffer:
4479         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4480                         adapter->mega_buffer, adapter->buf_dma_handle);
4481  out_host_put:
4482         scsi_host_put(host);
4483  out_iounmap:
4484         if (flag & BOARD_MEMMAP)
4485                 iounmap((void *)mega_baseport);
4486  out_release_region:
4487         if (flag & BOARD_MEMMAP)
4488                 release_mem_region(tbase, 128);
4489         else
4490                 release_region(mega_baseport, 16);
4491  out_disable_device:
4492         pci_disable_device(pdev);
4493  out:
4494         return error;
4495 }
4496
4497 static void
4498 __megaraid_shutdown(adapter_t *adapter)
4499 {
4500         u_char  raw_mbox[sizeof(struct mbox_out)];
4501         mbox_t  *mbox = (mbox_t *)raw_mbox;
4502         int     i;
4503
4504         /* Flush adapter cache */
4505         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4506         raw_mbox[0] = FLUSH_ADAPTER;
4507
4508         free_irq(adapter->host->irq, adapter);
4509
4510         /* Issue a blocking (interrupts disabled) command to the card */
4511         issue_scb_block(adapter, raw_mbox);
4512
4513         /* Flush disks cache */
4514         memset(&mbox->m_out, 0, sizeof(raw_mbox));
4515         raw_mbox[0] = FLUSH_SYSTEM;
4516
4517         /* Issue a blocking (interrupts disabled) command to the card */
4518         issue_scb_block(adapter, raw_mbox);
4519
4520         if (atomic_read(&adapter->pend_cmds) > 0)
4521                 dev_warn(&adapter->dev->dev, "pending commands!!\n");
4522
4523         /*
4524          * Have a delibrate delay to make sure all the caches are
4525          * actually flushed.
4526          */
4527         for (i = 0; i <= 10; i++)
4528                 mdelay(1000);
4529 }
4530
4531 static void
4532 megaraid_remove_one(struct pci_dev *pdev)
4533 {
4534         struct Scsi_Host *host = pci_get_drvdata(pdev);
4535         adapter_t *adapter = (adapter_t *)host->hostdata;
4536         char buf[12] = { 0 };
4537
4538         scsi_remove_host(host);
4539
4540         __megaraid_shutdown(adapter);
4541
4542         /* Free our resources */
4543         if (adapter->flag & BOARD_MEMMAP) {
4544                 iounmap((void *)adapter->base);
4545                 release_mem_region(adapter->host->base, 128);
4546         } else
4547                 release_region(adapter->base, 16);
4548
4549         mega_free_sgl(adapter);
4550
4551         sprintf(buf, "hba%d", adapter->host->host_no);
4552         remove_proc_subtree(buf, mega_proc_dir_entry);
4553
4554         pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4555                         adapter->mega_buffer, adapter->buf_dma_handle);
4556         kfree(adapter->scb_list);
4557         pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4558                         adapter->una_mbox64, adapter->una_mbox64_dma);
4559
4560         scsi_host_put(host);
4561         pci_disable_device(pdev);
4562
4563         hba_count--;
4564 }
4565
4566 static void
4567 megaraid_shutdown(struct pci_dev *pdev)
4568 {
4569         struct Scsi_Host *host = pci_get_drvdata(pdev);
4570         adapter_t *adapter = (adapter_t *)host->hostdata;
4571
4572         __megaraid_shutdown(adapter);
4573 }
4574
4575 static struct pci_device_id megaraid_pci_tbl[] = {
4576         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4577                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4578         {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4579                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4580         {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4581                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4582         {0,}
4583 };
4584 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4585
4586 static struct pci_driver megaraid_pci_driver = {
4587         .name           = "megaraid_legacy",
4588         .id_table       = megaraid_pci_tbl,
4589         .probe          = megaraid_probe_one,
4590         .remove         = megaraid_remove_one,
4591         .shutdown       = megaraid_shutdown,
4592 };
4593
4594 static int __init megaraid_init(void)
4595 {
4596         int error;
4597
4598         if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4599                 max_cmd_per_lun = MAX_CMD_PER_LUN;
4600         if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4601                 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4602
4603 #ifdef CONFIG_PROC_FS
4604         mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4605         if (!mega_proc_dir_entry) {
4606                 printk(KERN_WARNING
4607                                 "megaraid: failed to create megaraid root\n");
4608         }
4609 #endif
4610         error = pci_register_driver(&megaraid_pci_driver);
4611         if (error) {
4612 #ifdef CONFIG_PROC_FS
4613                 remove_proc_entry("megaraid", NULL);
4614 #endif
4615                 return error;
4616         }
4617
4618         /*
4619          * Register the driver as a character device, for applications
4620          * to access it for ioctls.
4621          * First argument (major) to register_chrdev implies a dynamic
4622          * major number allocation.
4623          */
4624         major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4625         if (!major) {
4626                 printk(KERN_WARNING
4627                                 "megaraid: failed to register char device\n");
4628         }
4629
4630         return 0;
4631 }
4632
4633 static void __exit megaraid_exit(void)
4634 {
4635         /*
4636          * Unregister the character device interface to the driver.
4637          */
4638         unregister_chrdev(major, "megadev_legacy");
4639
4640         pci_unregister_driver(&megaraid_pci_driver);
4641
4642 #ifdef CONFIG_PROC_FS
4643         remove_proc_entry("megaraid", NULL);
4644 #endif
4645 }
4646
4647 module_init(megaraid_init);
4648 module_exit(megaraid_exit);
4649
4650 /* vi: set ts=8 sw=8 tw=78: */