linux/drivers/scsi/megaraid.c
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   1/*
   2 *
   3 *                      Linux MegaRAID device driver
   4 *
   5 * Copyright (c) 2002  LSI Logic Corporation.
   6 *
   7 *         This program is free software; you can redistribute it and/or
   8 *         modify it under the terms of the GNU General Public License
   9 *         as published by the Free Software Foundation; either version
  10 *         2 of the License, or (at your option) any later version.
  11 *
  12 * Copyright (c) 2002  Red Hat, Inc. All rights reserved.
  13 *        - fixes
  14 *        - speed-ups (list handling fixes, issued_list, optimizations.)
  15 *        - lots of cleanups.
  16 *
  17 * Copyright (c) 2003  Christoph Hellwig  <hch@lst.de>
  18 *        - new-style, hotplug-aware pci probing and scsi registration
  19 *
  20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
  21 *                                              <Seokmann.Ju@lsil.com>
  22 *
  23 * Description: Linux device driver for LSI Logic MegaRAID controller
  24 *
  25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
  26 *                                      518, 520, 531, 532
  27 *
  28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
  29 * and others. Please send updates to the mailing list
  30 * linux-scsi@vger.kernel.org .
  31 *
  32 */
  33
  34#include <linux/mm.h>
  35#include <linux/fs.h>
  36#include <linux/blkdev.h>
  37#include <asm/uaccess.h>
  38#include <asm/io.h>
  39#include <linux/completion.h>
  40#include <linux/delay.h>
  41#include <linux/proc_fs.h>
  42#include <linux/reboot.h>
  43#include <linux/module.h>
  44#include <linux/list.h>
  45#include <linux/interrupt.h>
  46#include <linux/pci.h>
  47#include <linux/init.h>
  48#include <linux/dma-mapping.h>
  49#include <linux/mutex.h>
  50#include <linux/slab.h>
  51#include <scsi/scsicam.h>
  52
  53#include "scsi.h"
  54#include <scsi/scsi_host.h>
  55
  56#include "megaraid.h"
  57
  58#define MEGARAID_MODULE_VERSION "2.00.4"
  59
  60MODULE_AUTHOR ("sju@lsil.com");
  61MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
  62MODULE_LICENSE ("GPL");
  63MODULE_VERSION(MEGARAID_MODULE_VERSION);
  64
  65static DEFINE_MUTEX(megadev_mutex);
  66static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
  67module_param(max_cmd_per_lun, uint, 0);
  68MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
  69
  70static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
  71module_param(max_sectors_per_io, ushort, 0);
  72MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
  73
  74
  75static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
  76module_param(max_mbox_busy_wait, ushort, 0);
  77MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
  78
  79#define RDINDOOR(adapter)       readl((adapter)->mmio_base + 0x20)
  80#define RDOUTDOOR(adapter)      readl((adapter)->mmio_base + 0x2C)
  81#define WRINDOOR(adapter,value)  writel(value, (adapter)->mmio_base + 0x20)
  82#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
  83
  84/*
  85 * Global variables
  86 */
  87
  88static int hba_count;
  89static adapter_t *hba_soft_state[MAX_CONTROLLERS];
  90static struct proc_dir_entry *mega_proc_dir_entry;
  91
  92/* For controller re-ordering */
  93static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
  94
  95static long
  96megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
  97
  98/*
  99 * The File Operations structure for the serial/ioctl interface of the driver
 100 */
 101static const struct file_operations megadev_fops = {
 102        .owner          = THIS_MODULE,
 103        .unlocked_ioctl = megadev_unlocked_ioctl,
 104        .open           = megadev_open,
 105        .llseek         = noop_llseek,
 106};
 107
 108/*
 109 * Array to structures for storing the information about the controllers. This
 110 * information is sent to the user level applications, when they do an ioctl
 111 * for this information.
 112 */
 113static struct mcontroller mcontroller[MAX_CONTROLLERS];
 114
 115/* The current driver version */
 116static u32 driver_ver = 0x02000000;
 117
 118/* major number used by the device for character interface */
 119static int major;
 120
 121#define IS_RAID_CH(hba, ch)     (((hba)->mega_ch_class >> (ch)) & 0x01)
 122
 123
 124/*
 125 * Debug variable to print some diagnostic messages
 126 */
 127static int trace_level;
 128
 129/**
 130 * mega_setup_mailbox()
 131 * @adapter - pointer to our soft state
 132 *
 133 * Allocates a 8 byte aligned memory for the handshake mailbox.
 134 */
 135static int
 136mega_setup_mailbox(adapter_t *adapter)
 137{
 138        unsigned long   align;
 139
 140        adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
 141                        sizeof(mbox64_t), &adapter->una_mbox64_dma);
 142
 143        if( !adapter->una_mbox64 ) return -1;
 144                
 145        adapter->mbox = &adapter->una_mbox64->mbox;
 146
 147        adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
 148                        (~0UL ^ 0xFUL));
 149
 150        adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
 151
 152        align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
 153
 154        adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
 155
 156        /*
 157         * Register the mailbox if the controller is an io-mapped controller
 158         */
 159        if( adapter->flag & BOARD_IOMAP ) {
 160
 161                outb(adapter->mbox_dma & 0xFF,
 162                                adapter->host->io_port + MBOX_PORT0);
 163
 164                outb((adapter->mbox_dma >> 8) & 0xFF,
 165                                adapter->host->io_port + MBOX_PORT1);
 166
 167                outb((adapter->mbox_dma >> 16) & 0xFF,
 168                                adapter->host->io_port + MBOX_PORT2);
 169
 170                outb((adapter->mbox_dma >> 24) & 0xFF,
 171                                adapter->host->io_port + MBOX_PORT3);
 172
 173                outb(ENABLE_MBOX_BYTE,
 174                                adapter->host->io_port + ENABLE_MBOX_REGION);
 175
 176                irq_ack(adapter);
 177
 178                irq_enable(adapter);
 179        }
 180
 181        return 0;
 182}
 183
 184
 185/*
 186 * mega_query_adapter()
 187 * @adapter - pointer to our soft state
 188 *
 189 * Issue the adapter inquiry commands to the controller and find out
 190 * information and parameter about the devices attached
 191 */
 192static int
 193mega_query_adapter(adapter_t *adapter)
 194{
 195        dma_addr_t      prod_info_dma_handle;
 196        mega_inquiry3   *inquiry3;
 197        u8      raw_mbox[sizeof(struct mbox_out)];
 198        mbox_t  *mbox;
 199        int     retval;
 200
 201        /* Initialize adapter inquiry mailbox */
 202
 203        mbox = (mbox_t *)raw_mbox;
 204
 205        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
 206        memset(&mbox->m_out, 0, sizeof(raw_mbox));
 207
 208        /*
 209         * Try to issue Inquiry3 command
 210         * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
 211         * update enquiry3 structure
 212         */
 213        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
 214
 215        inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
 216
 217        raw_mbox[0] = FC_NEW_CONFIG;            /* i.e. mbox->cmd=0xA1 */
 218        raw_mbox[2] = NC_SUBOP_ENQUIRY3;        /* i.e. 0x0F */
 219        raw_mbox[3] = ENQ3_GET_SOLICITED_FULL;  /* i.e. 0x02 */
 220
 221        /* Issue a blocking command to the card */
 222        if ((retval = issue_scb_block(adapter, raw_mbox))) {
 223                /* the adapter does not support 40ld */
 224
 225                mraid_ext_inquiry       *ext_inq;
 226                mraid_inquiry           *inq;
 227                dma_addr_t              dma_handle;
 228
 229                ext_inq = pci_alloc_consistent(adapter->dev,
 230                                sizeof(mraid_ext_inquiry), &dma_handle);
 231
 232                if( ext_inq == NULL ) return -1;
 233
 234                inq = &ext_inq->raid_inq;
 235
 236                mbox->m_out.xferaddr = (u32)dma_handle;
 237
 238                /*issue old 0x04 command to adapter */
 239                mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
 240
 241                issue_scb_block(adapter, raw_mbox);
 242
 243                /*
 244                 * update Enquiry3 and ProductInfo structures with
 245                 * mraid_inquiry structure
 246                 */
 247                mega_8_to_40ld(inq, inquiry3,
 248                                (mega_product_info *)&adapter->product_info);
 249
 250                pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
 251                                ext_inq, dma_handle);
 252
 253        } else {                /*adapter supports 40ld */
 254                adapter->flag |= BOARD_40LD;
 255
 256                /*
 257                 * get product_info, which is static information and will be
 258                 * unchanged
 259                 */
 260                prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
 261                                &adapter->product_info,
 262                                sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 263
 264                mbox->m_out.xferaddr = prod_info_dma_handle;
 265
 266                raw_mbox[0] = FC_NEW_CONFIG;    /* i.e. mbox->cmd=0xA1 */
 267                raw_mbox[2] = NC_SUBOP_PRODUCT_INFO;    /* i.e. 0x0E */
 268
 269                if ((retval = issue_scb_block(adapter, raw_mbox)))
 270                        printk(KERN_WARNING
 271                        "megaraid: Product_info cmd failed with error: %d\n",
 272                                retval);
 273
 274                pci_unmap_single(adapter->dev, prod_info_dma_handle,
 275                                sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
 276        }
 277
 278
 279        /*
 280         * kernel scans the channels from 0 to <= max_channel
 281         */
 282        adapter->host->max_channel =
 283                adapter->product_info.nchannels + NVIRT_CHAN -1;
 284
 285        adapter->host->max_id = 16;     /* max targets per channel */
 286
 287        adapter->host->max_lun = 7;     /* Up to 7 luns for non disk devices */
 288
 289        adapter->host->cmd_per_lun = max_cmd_per_lun;
 290
 291        adapter->numldrv = inquiry3->num_ldrv;
 292
 293        adapter->max_cmds = adapter->product_info.max_commands;
 294
 295        if(adapter->max_cmds > MAX_COMMANDS)
 296                adapter->max_cmds = MAX_COMMANDS;
 297
 298        adapter->host->can_queue = adapter->max_cmds - 1;
 299
 300        /*
 301         * Get the maximum number of scatter-gather elements supported by this
 302         * firmware
 303         */
 304        mega_get_max_sgl(adapter);
 305
 306        adapter->host->sg_tablesize = adapter->sglen;
 307
 308
 309        /* use HP firmware and bios version encoding */
 310        if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
 311                sprintf (adapter->fw_version, "%c%d%d.%d%d",
 312                         adapter->product_info.fw_version[2],
 313                         adapter->product_info.fw_version[1] >> 8,
 314                         adapter->product_info.fw_version[1] & 0x0f,
 315                         adapter->product_info.fw_version[0] >> 8,
 316                         adapter->product_info.fw_version[0] & 0x0f);
 317                sprintf (adapter->bios_version, "%c%d%d.%d%d",
 318                         adapter->product_info.bios_version[2],
 319                         adapter->product_info.bios_version[1] >> 8,
 320                         adapter->product_info.bios_version[1] & 0x0f,
 321                         adapter->product_info.bios_version[0] >> 8,
 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        printk(KERN_NOTICE "megaraid: [%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                printk(KERN_NOTICE "megaraid: 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 */
 354static inline void
 355mega_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 */
 368static int
 369megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(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
 412static 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 */
 422static inline scb_t *
 423mega_allocate_scb(adapter_t *adapter, 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 */
 454static inline int
 455mega_get_ldrv_num(adapter_t *adapter, 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 */
 517static scb_t *
 518mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
 519{
 520        mega_ext_passthru       *epthru;
 521        mega_passthru   *pthru;
 522        scb_t   *scb;
 523        mbox_t  *mbox;
 524        long    seg;
 525        char    islogical;
 526        int     max_ldrv_num;
 527        int     channel = 0;
 528        int     target = 0;
 529        int     ldrv_num = 0;   /* logical drive number */
 530
 531
 532        /*
 533         * filter the internal and ioctl commands
 534         */
 535        if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
 536                return (scb_t *)cmd->host_scribble;
 537
 538        /*
 539         * We know what channels our logical drives are on - mega_find_card()
 540         */
 541        islogical = adapter->logdrv_chan[cmd->device->channel];
 542
 543        /*
 544         * The theory: If physical drive is chosen for boot, all the physical
 545         * devices are exported before the logical drives, otherwise physical
 546         * devices are pushed after logical drives, in which case - Kernel sees
 547         * the physical devices on virtual channel which is obviously converted
 548         * to actual channel on the HBA.
 549         */
 550        if( adapter->boot_pdrv_enabled ) {
 551                if( islogical ) {
 552                        /* logical channel */
 553                        channel = cmd->device->channel -
 554                                adapter->product_info.nchannels;
 555                }
 556                else {
 557                        /* this is physical channel */
 558                        channel = cmd->device->channel; 
 559                        target = cmd->device->id;
 560
 561                        /*
 562                         * boot from a physical disk, that disk needs to be
 563                         * exposed first IF both the channels are SCSI, then
 564                         * booting from the second channel is not allowed.
 565                         */
 566                        if( target == 0 ) {
 567                                target = adapter->boot_pdrv_tgt;
 568                        }
 569                        else if( target == adapter->boot_pdrv_tgt ) {
 570                                target = 0;
 571                        }
 572                }
 573        }
 574        else {
 575                if( islogical ) {
 576                        /* this is the logical channel */
 577                        channel = cmd->device->channel; 
 578                }
 579                else {
 580                        /* physical channel */
 581                        channel = cmd->device->channel - NVIRT_CHAN;    
 582                        target = cmd->device->id;
 583                }
 584        }
 585
 586
 587        if(islogical) {
 588
 589                /* have just LUN 0 for each target on virtual channels */
 590                if (cmd->device->lun) {
 591                        cmd->result = (DID_BAD_TARGET << 16);
 592                        cmd->scsi_done(cmd);
 593                        return NULL;
 594                }
 595
 596                ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
 597
 598
 599                max_ldrv_num = (adapter->flag & BOARD_40LD) ?
 600                        MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
 601
 602                /*
 603                 * max_ldrv_num increases by 0x80 if some logical drive was
 604                 * deleted.
 605                 */
 606                if(adapter->read_ldidmap)
 607                        max_ldrv_num += 0x80;
 608
 609                if(ldrv_num > max_ldrv_num ) {
 610                        cmd->result = (DID_BAD_TARGET << 16);
 611                        cmd->scsi_done(cmd);
 612                        return NULL;
 613                }
 614
 615        }
 616        else {
 617                if( cmd->device->lun > 7) {
 618                        /*
 619                         * Do not support lun >7 for physically accessed
 620                         * devices
 621                         */
 622                        cmd->result = (DID_BAD_TARGET << 16);
 623                        cmd->scsi_done(cmd);
 624                        return NULL;
 625                }
 626        }
 627
 628        /*
 629         *
 630         * Logical drive commands
 631         *
 632         */
 633        if(islogical) {
 634                switch (cmd->cmnd[0]) {
 635                case TEST_UNIT_READY:
 636#if MEGA_HAVE_CLUSTERING
 637                        /*
 638                         * Do we support clustering and is the support enabled
 639                         * If no, return success always
 640                         */
 641                        if( !adapter->has_cluster ) {
 642                                cmd->result = (DID_OK << 16);
 643                                cmd->scsi_done(cmd);
 644                                return NULL;
 645                        }
 646
 647                        if(!(scb = mega_allocate_scb(adapter, cmd))) {
 648                                *busy = 1;
 649                                return NULL;
 650                        }
 651
 652                        scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 653                        scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
 654                        scb->raw_mbox[3] = ldrv_num;
 655
 656                        scb->dma_direction = PCI_DMA_NONE;
 657
 658                        return scb;
 659#else
 660                        cmd->result = (DID_OK << 16);
 661                        cmd->scsi_done(cmd);
 662                        return NULL;
 663#endif
 664
 665                case MODE_SENSE: {
 666                        char *buf;
 667                        struct scatterlist *sg;
 668
 669                        sg = scsi_sglist(cmd);
 670                        buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
 671
 672                        memset(buf, 0, cmd->cmnd[4]);
 673                        kunmap_atomic(buf - sg->offset, KM_IRQ0);
 674
 675                        cmd->result = (DID_OK << 16);
 676                        cmd->scsi_done(cmd);
 677                        return NULL;
 678                }
 679
 680                case READ_CAPACITY:
 681                case INQUIRY:
 682
 683                        if(!(adapter->flag & (1L << cmd->device->channel))) {
 684
 685                                printk(KERN_NOTICE
 686                                        "scsi%d: scanning scsi channel %d ",
 687                                                adapter->host->host_no,
 688                                                cmd->device->channel);
 689                                printk("for logical drives.\n");
 690
 691                                adapter->flag |= (1L << cmd->device->channel);
 692                        }
 693
 694                        /* Allocate a SCB and initialize passthru */
 695                        if(!(scb = mega_allocate_scb(adapter, cmd))) {
 696                                *busy = 1;
 697                                return NULL;
 698                        }
 699                        pthru = scb->pthru;
 700
 701                        mbox = (mbox_t *)scb->raw_mbox;
 702                        memset(mbox, 0, sizeof(scb->raw_mbox));
 703                        memset(pthru, 0, sizeof(mega_passthru));
 704
 705                        pthru->timeout = 0;
 706                        pthru->ars = 1;
 707                        pthru->reqsenselen = 14;
 708                        pthru->islogical = 1;
 709                        pthru->logdrv = ldrv_num;
 710                        pthru->cdblen = cmd->cmd_len;
 711                        memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 712
 713                        if( adapter->has_64bit_addr ) {
 714                                mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 715                        }
 716                        else {
 717                                mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 718                        }
 719
 720                        scb->dma_direction = PCI_DMA_FROMDEVICE;
 721
 722                        pthru->numsgelements = mega_build_sglist(adapter, scb,
 723                                &pthru->dataxferaddr, &pthru->dataxferlen);
 724
 725                        mbox->m_out.xferaddr = scb->pthru_dma_addr;
 726
 727                        return scb;
 728
 729                case READ_6:
 730                case WRITE_6:
 731                case READ_10:
 732                case WRITE_10:
 733                case READ_12:
 734                case WRITE_12:
 735
 736                        /* Allocate a SCB and initialize mailbox */
 737                        if(!(scb = mega_allocate_scb(adapter, cmd))) {
 738                                *busy = 1;
 739                                return NULL;
 740                        }
 741                        mbox = (mbox_t *)scb->raw_mbox;
 742
 743                        memset(mbox, 0, sizeof(scb->raw_mbox));
 744                        mbox->m_out.logdrv = ldrv_num;
 745
 746                        /*
 747                         * A little hack: 2nd bit is zero for all scsi read
 748                         * commands and is set for all scsi write commands
 749                         */
 750                        if( adapter->has_64bit_addr ) {
 751                                mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 752                                        MEGA_MBOXCMD_LWRITE64:
 753                                        MEGA_MBOXCMD_LREAD64 ;
 754                        }
 755                        else {
 756                                mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
 757                                        MEGA_MBOXCMD_LWRITE:
 758                                        MEGA_MBOXCMD_LREAD ;
 759                        }
 760
 761                        /*
 762                         * 6-byte READ(0x08) or WRITE(0x0A) cdb
 763                         */
 764                        if( cmd->cmd_len == 6 ) {
 765                                mbox->m_out.numsectors = (u32) cmd->cmnd[4];
 766                                mbox->m_out.lba =
 767                                        ((u32)cmd->cmnd[1] << 16) |
 768                                        ((u32)cmd->cmnd[2] << 8) |
 769                                        (u32)cmd->cmnd[3];
 770
 771                                mbox->m_out.lba &= 0x1FFFFF;
 772
 773#if MEGA_HAVE_STATS
 774                                /*
 775                                 * Take modulo 0x80, since the logical drive
 776                                 * number increases by 0x80 when a logical
 777                                 * drive was deleted
 778                                 */
 779                                if (*cmd->cmnd == READ_6) {
 780                                        adapter->nreads[ldrv_num%0x80]++;
 781                                        adapter->nreadblocks[ldrv_num%0x80] +=
 782                                                mbox->m_out.numsectors;
 783                                } else {
 784                                        adapter->nwrites[ldrv_num%0x80]++;
 785                                        adapter->nwriteblocks[ldrv_num%0x80] +=
 786                                                mbox->m_out.numsectors;
 787                                }
 788#endif
 789                        }
 790
 791                        /*
 792                         * 10-byte READ(0x28) or WRITE(0x2A) cdb
 793                         */
 794                        if( cmd->cmd_len == 10 ) {
 795                                mbox->m_out.numsectors =
 796                                        (u32)cmd->cmnd[8] |
 797                                        ((u32)cmd->cmnd[7] << 8);
 798                                mbox->m_out.lba =
 799                                        ((u32)cmd->cmnd[2] << 24) |
 800                                        ((u32)cmd->cmnd[3] << 16) |
 801                                        ((u32)cmd->cmnd[4] << 8) |
 802                                        (u32)cmd->cmnd[5];
 803
 804#if MEGA_HAVE_STATS
 805                                if (*cmd->cmnd == READ_10) {
 806                                        adapter->nreads[ldrv_num%0x80]++;
 807                                        adapter->nreadblocks[ldrv_num%0x80] +=
 808                                                mbox->m_out.numsectors;
 809                                } else {
 810                                        adapter->nwrites[ldrv_num%0x80]++;
 811                                        adapter->nwriteblocks[ldrv_num%0x80] +=
 812                                                mbox->m_out.numsectors;
 813                                }
 814#endif
 815                        }
 816
 817                        /*
 818                         * 12-byte READ(0xA8) or WRITE(0xAA) cdb
 819                         */
 820                        if( cmd->cmd_len == 12 ) {
 821                                mbox->m_out.lba =
 822                                        ((u32)cmd->cmnd[2] << 24) |
 823                                        ((u32)cmd->cmnd[3] << 16) |
 824                                        ((u32)cmd->cmnd[4] << 8) |
 825                                        (u32)cmd->cmnd[5];
 826
 827                                mbox->m_out.numsectors =
 828                                        ((u32)cmd->cmnd[6] << 24) |
 829                                        ((u32)cmd->cmnd[7] << 16) |
 830                                        ((u32)cmd->cmnd[8] << 8) |
 831                                        (u32)cmd->cmnd[9];
 832
 833#if MEGA_HAVE_STATS
 834                                if (*cmd->cmnd == READ_12) {
 835                                        adapter->nreads[ldrv_num%0x80]++;
 836                                        adapter->nreadblocks[ldrv_num%0x80] +=
 837                                                mbox->m_out.numsectors;
 838                                } else {
 839                                        adapter->nwrites[ldrv_num%0x80]++;
 840                                        adapter->nwriteblocks[ldrv_num%0x80] +=
 841                                                mbox->m_out.numsectors;
 842                                }
 843#endif
 844                        }
 845
 846                        /*
 847                         * If it is a read command
 848                         */
 849                        if( (*cmd->cmnd & 0x0F) == 0x08 ) {
 850                                scb->dma_direction = PCI_DMA_FROMDEVICE;
 851                        }
 852                        else {
 853                                scb->dma_direction = PCI_DMA_TODEVICE;
 854                        }
 855
 856                        /* Calculate Scatter-Gather info */
 857                        mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
 858                                        (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
 859
 860                        return scb;
 861
 862#if MEGA_HAVE_CLUSTERING
 863                case RESERVE:   /* Fall through */
 864                case RELEASE:
 865
 866                        /*
 867                         * Do we support clustering and is the support enabled
 868                         */
 869                        if( ! adapter->has_cluster ) {
 870
 871                                cmd->result = (DID_BAD_TARGET << 16);
 872                                cmd->scsi_done(cmd);
 873                                return NULL;
 874                        }
 875
 876                        /* Allocate a SCB and initialize mailbox */
 877                        if(!(scb = mega_allocate_scb(adapter, cmd))) {
 878                                *busy = 1;
 879                                return NULL;
 880                        }
 881
 882                        scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
 883                        scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
 884                                MEGA_RESERVE_LD : MEGA_RELEASE_LD;
 885
 886                        scb->raw_mbox[3] = ldrv_num;
 887
 888                        scb->dma_direction = PCI_DMA_NONE;
 889
 890                        return scb;
 891#endif
 892
 893                default:
 894                        cmd->result = (DID_BAD_TARGET << 16);
 895                        cmd->scsi_done(cmd);
 896                        return NULL;
 897                }
 898        }
 899
 900        /*
 901         * Passthru drive commands
 902         */
 903        else {
 904                /* Allocate a SCB and initialize passthru */
 905                if(!(scb = mega_allocate_scb(adapter, cmd))) {
 906                        *busy = 1;
 907                        return NULL;
 908                }
 909
 910                mbox = (mbox_t *)scb->raw_mbox;
 911                memset(mbox, 0, sizeof(scb->raw_mbox));
 912
 913                if( adapter->support_ext_cdb ) {
 914
 915                        epthru = mega_prepare_extpassthru(adapter, scb, cmd,
 916                                        channel, target);
 917
 918                        mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
 919
 920                        mbox->m_out.xferaddr = scb->epthru_dma_addr;
 921
 922                }
 923                else {
 924
 925                        pthru = mega_prepare_passthru(adapter, scb, cmd,
 926                                        channel, target);
 927
 928                        /* Initialize mailbox */
 929                        if( adapter->has_64bit_addr ) {
 930                                mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
 931                        }
 932                        else {
 933                                mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
 934                        }
 935
 936                        mbox->m_out.xferaddr = scb->pthru_dma_addr;
 937
 938                }
 939                return scb;
 940        }
 941        return NULL;
 942}
 943
 944
 945/**
 946 * mega_prepare_passthru()
 947 * @adapter - pointer to our soft state
 948 * @scb - our scsi control block
 949 * @cmd - scsi command from the mid-layer
 950 * @channel - actual channel on the controller
 951 * @target - actual id on the controller.
 952 *
 953 * prepare a command for the scsi physical devices.
 954 */
 955static mega_passthru *
 956mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
 957                int channel, int target)
 958{
 959        mega_passthru *pthru;
 960
 961        pthru = scb->pthru;
 962        memset(pthru, 0, sizeof (mega_passthru));
 963
 964        /* 0=6sec/1=60sec/2=10min/3=3hrs */
 965        pthru->timeout = 2;
 966
 967        pthru->ars = 1;
 968        pthru->reqsenselen = 14;
 969        pthru->islogical = 0;
 970
 971        pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
 972
 973        pthru->target = (adapter->flag & BOARD_40LD) ?
 974                (channel << 4) | target : target;
 975
 976        pthru->cdblen = cmd->cmd_len;
 977        pthru->logdrv = cmd->device->lun;
 978
 979        memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
 980
 981        /* Not sure about the direction */
 982        scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
 983
 984        /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
 985        switch (cmd->cmnd[0]) {
 986        case INQUIRY:
 987        case READ_CAPACITY:
 988                if(!(adapter->flag & (1L << cmd->device->channel))) {
 989
 990                        printk(KERN_NOTICE
 991                                "scsi%d: scanning scsi channel %d [P%d] ",
 992                                        adapter->host->host_no,
 993                                        cmd->device->channel, channel);
 994                        printk("for physical devices.\n");
 995
 996                        adapter->flag |= (1L << cmd->device->channel);
 997                }
 998                /* Fall through */
 999        default:
1000                pthru->numsgelements = mega_build_sglist(adapter, scb,
1001                                &pthru->dataxferaddr, &pthru->dataxferlen);
1002                break;
1003        }
1004        return pthru;
1005}
1006
1007
1008/**
1009 * mega_prepare_extpassthru()
1010 * @adapter - pointer to our soft state
1011 * @scb - our scsi control block
1012 * @cmd - scsi command from the mid-layer
1013 * @channel - actual channel on the controller
1014 * @target - actual id on the controller.
1015 *
1016 * prepare a command for the scsi physical devices. This rountine prepares
1017 * commands for devices which can take extended CDBs (>10 bytes)
1018 */
1019static mega_ext_passthru *
1020mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1021                int channel, int target)
1022{
1023        mega_ext_passthru       *epthru;
1024
1025        epthru = scb->epthru;
1026        memset(epthru, 0, sizeof(mega_ext_passthru));
1027
1028        /* 0=6sec/1=60sec/2=10min/3=3hrs */
1029        epthru->timeout = 2;
1030
1031        epthru->ars = 1;
1032        epthru->reqsenselen = 14;
1033        epthru->islogical = 0;
1034
1035        epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1036        epthru->target = (adapter->flag & BOARD_40LD) ?
1037                (channel << 4) | target : target;
1038
1039        epthru->cdblen = cmd->cmd_len;
1040        epthru->logdrv = cmd->device->lun;
1041
1042        memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1043
1044        /* Not sure about the direction */
1045        scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1046
1047        switch(cmd->cmnd[0]) {
1048        case INQUIRY:
1049        case READ_CAPACITY:
1050                if(!(adapter->flag & (1L << cmd->device->channel))) {
1051
1052                        printk(KERN_NOTICE
1053                                "scsi%d: scanning scsi channel %d [P%d] ",
1054                                        adapter->host->host_no,
1055                                        cmd->device->channel, channel);
1056                        printk("for physical devices.\n");
1057
1058                        adapter->flag |= (1L << cmd->device->channel);
1059                }
1060                /* Fall through */
1061        default:
1062                epthru->numsgelements = mega_build_sglist(adapter, scb,
1063                                &epthru->dataxferaddr, &epthru->dataxferlen);
1064                break;
1065        }
1066
1067        return epthru;
1068}
1069
1070static void
1071__mega_runpendq(adapter_t *adapter)
1072{
1073        scb_t *scb;
1074        struct list_head *pos, *next;
1075
1076        /* Issue any pending commands to the card */
1077        list_for_each_safe(pos, next, &adapter->pending_list) {
1078
1079                scb = list_entry(pos, scb_t, list);
1080
1081                if( !(scb->state & SCB_ISSUED) ) {
1082
1083                        if( issue_scb(adapter, scb) != 0 )
1084                                return;
1085                }
1086        }
1087
1088        return;
1089}
1090
1091
1092/**
1093 * issue_scb()
1094 * @adapter - pointer to our soft state
1095 * @scb - scsi control block
1096 *
1097 * Post a command to the card if the mailbox is available, otherwise return
1098 * busy. We also take the scb from the pending list if the mailbox is
1099 * available.
1100 */
1101static int
1102issue_scb(adapter_t *adapter, scb_t *scb)
1103{
1104        volatile mbox64_t       *mbox64 = adapter->mbox64;
1105        volatile mbox_t         *mbox = adapter->mbox;
1106        unsigned int    i = 0;
1107
1108        if(unlikely(mbox->m_in.busy)) {
1109                do {
1110                        udelay(1);
1111                        i++;
1112                } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1113
1114                if(mbox->m_in.busy) return -1;
1115        }
1116
1117        /* Copy mailbox data into host structure */
1118        memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 
1119                        sizeof(struct mbox_out));
1120
1121        mbox->m_out.cmdid = scb->idx;   /* Set cmdid */
1122        mbox->m_in.busy = 1;            /* Set busy */
1123
1124
1125        /*
1126         * Increment the pending queue counter
1127         */
1128        atomic_inc(&adapter->pend_cmds);
1129
1130        switch (mbox->m_out.cmd) {
1131        case MEGA_MBOXCMD_LREAD64:
1132        case MEGA_MBOXCMD_LWRITE64:
1133        case MEGA_MBOXCMD_PASSTHRU64:
1134        case MEGA_MBOXCMD_EXTPTHRU:
1135                mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1136                mbox64->xfer_segment_hi = 0;
1137                mbox->m_out.xferaddr = 0xFFFFFFFF;
1138                break;
1139        default:
1140                mbox64->xfer_segment_lo = 0;
1141                mbox64->xfer_segment_hi = 0;
1142        }
1143
1144        /*
1145         * post the command
1146         */
1147        scb->state |= SCB_ISSUED;
1148
1149        if( likely(adapter->flag & BOARD_MEMMAP) ) {
1150                mbox->m_in.poll = 0;
1151                mbox->m_in.ack = 0;
1152                WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1153        }
1154        else {
1155                irq_enable(adapter);
1156                issue_command(adapter);
1157        }
1158
1159        return 0;
1160}
1161
1162/*
1163 * Wait until the controller's mailbox is available
1164 */
1165static inline int
1166mega_busywait_mbox (adapter_t *adapter)
1167{
1168        if (adapter->mbox->m_in.busy)
1169                return __mega_busywait_mbox(adapter);
1170        return 0;
1171}
1172
1173/**
1174 * issue_scb_block()
1175 * @adapter - pointer to our soft state
1176 * @raw_mbox - the mailbox
1177 *
1178 * Issue a scb in synchronous and non-interrupt mode
1179 */
1180static int
1181issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1182{
1183        volatile mbox64_t *mbox64 = adapter->mbox64;
1184        volatile mbox_t *mbox = adapter->mbox;
1185        u8      byte;
1186
1187        /* Wait until mailbox is free */
1188        if(mega_busywait_mbox (adapter))
1189                goto bug_blocked_mailbox;
1190
1191        /* Copy mailbox data into host structure */
1192        memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1193        mbox->m_out.cmdid = 0xFE;
1194        mbox->m_in.busy = 1;
1195
1196        switch (raw_mbox[0]) {
1197        case MEGA_MBOXCMD_LREAD64:
1198        case MEGA_MBOXCMD_LWRITE64:
1199        case MEGA_MBOXCMD_PASSTHRU64:
1200        case MEGA_MBOXCMD_EXTPTHRU:
1201                mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1202                mbox64->xfer_segment_hi = 0;
1203                mbox->m_out.xferaddr = 0xFFFFFFFF;
1204                break;
1205        default:
1206                mbox64->xfer_segment_lo = 0;
1207                mbox64->xfer_segment_hi = 0;
1208        }
1209
1210        if( likely(adapter->flag & BOARD_MEMMAP) ) {
1211                mbox->m_in.poll = 0;
1212                mbox->m_in.ack = 0;
1213                mbox->m_in.numstatus = 0xFF;
1214                mbox->m_in.status = 0xFF;
1215                WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1216
1217                while((volatile u8)mbox->m_in.numstatus == 0xFF)
1218                        cpu_relax();
1219
1220                mbox->m_in.numstatus = 0xFF;
1221
1222                while( (volatile u8)mbox->m_in.poll != 0x77 )
1223                        cpu_relax();
1224
1225                mbox->m_in.poll = 0;
1226                mbox->m_in.ack = 0x77;
1227
1228                WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1229
1230                while(RDINDOOR(adapter) & 0x2)
1231                        cpu_relax();
1232        }
1233        else {
1234                irq_disable(adapter);
1235                issue_command(adapter);
1236
1237                while (!((byte = irq_state(adapter)) & INTR_VALID))
1238                        cpu_relax();
1239
1240                set_irq_state(adapter, byte);
1241                irq_enable(adapter);
1242                irq_ack(adapter);
1243        }
1244
1245        return mbox->m_in.status;
1246
1247bug_blocked_mailbox:
1248        printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1249        udelay (1000);
1250        return -1;
1251}
1252
1253
1254/**
1255 * megaraid_isr_iomapped()
1256 * @irq - irq
1257 * @devp - pointer to our soft state
1258 *
1259 * Interrupt service routine for io-mapped controllers.
1260 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1261 * and service the completed commands.
1262 */
1263static irqreturn_t
1264megaraid_isr_iomapped(int irq, void *devp)
1265{
1266        adapter_t       *adapter = devp;
1267        unsigned long   flags;
1268        u8      status;
1269        u8      nstatus;
1270        u8      completed[MAX_FIRMWARE_STATUS];
1271        u8      byte;
1272        int     handled = 0;
1273
1274
1275        /*
1276         * loop till F/W has more commands for us to complete.
1277         */
1278        spin_lock_irqsave(&adapter->lock, flags);
1279
1280        do {
1281                /* Check if a valid interrupt is pending */
1282                byte = irq_state(adapter);
1283                if( (byte & VALID_INTR_BYTE) == 0 ) {
1284                        /*
1285                         * No more pending commands
1286                         */
1287                        goto out_unlock;
1288                }
1289                set_irq_state(adapter, byte);
1290
1291                while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1292                                == 0xFF)
1293                        cpu_relax();
1294                adapter->mbox->m_in.numstatus = 0xFF;
1295
1296                status = adapter->mbox->m_in.status;
1297
1298                /*
1299                 * decrement the pending queue counter
1300                 */
1301                atomic_sub(nstatus, &adapter->pend_cmds);
1302
1303                memcpy(completed, (void *)adapter->mbox->m_in.completed, 
1304                                nstatus);
1305
1306                /* Acknowledge interrupt */
1307                irq_ack(adapter);
1308
1309                mega_cmd_done(adapter, completed, nstatus, status);
1310
1311                mega_rundoneq(adapter);
1312
1313                handled = 1;
1314
1315                /* Loop through any pending requests */
1316                if(atomic_read(&adapter->quiescent) == 0) {
1317                        mega_runpendq(adapter);
1318                }
1319
1320        } while(1);
1321
1322 out_unlock:
1323
1324        spin_unlock_irqrestore(&adapter->lock, flags);
1325
1326        return IRQ_RETVAL(handled);
1327}
1328
1329
1330/**
1331 * megaraid_isr_memmapped()
1332 * @irq - irq
1333 * @devp - pointer to our soft state
1334 *
1335 * Interrupt service routine for memory-mapped controllers.
1336 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1337 * and service the completed commands.
1338 */
1339static irqreturn_t
1340megaraid_isr_memmapped(int irq, void *devp)
1341{
1342        adapter_t       *adapter = devp;
1343        unsigned long   flags;
1344        u8      status;
1345        u32     dword = 0;
1346        u8      nstatus;
1347        u8      completed[MAX_FIRMWARE_STATUS];
1348        int     handled = 0;
1349
1350
1351        /*
1352         * loop till F/W has more commands for us to complete.
1353         */
1354        spin_lock_irqsave(&adapter->lock, flags);
1355
1356        do {
1357                /* Check if a valid interrupt is pending */
1358                dword = RDOUTDOOR(adapter);
1359                if(dword != 0x10001234) {
1360                        /*
1361                         * No more pending commands
1362                         */
1363                        goto out_unlock;
1364                }
1365                WROUTDOOR(adapter, 0x10001234);
1366
1367                while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1368                                == 0xFF) {
1369                        cpu_relax();
1370                }
1371                adapter->mbox->m_in.numstatus = 0xFF;
1372
1373                status = adapter->mbox->m_in.status;
1374
1375                /*
1376                 * decrement the pending queue counter
1377                 */
1378                atomic_sub(nstatus, &adapter->pend_cmds);
1379
1380                memcpy(completed, (void *)adapter->mbox->m_in.completed, 
1381                                nstatus);
1382
1383                /* Acknowledge interrupt */
1384                WRINDOOR(adapter, 0x2);
1385
1386                handled = 1;
1387
1388                while( RDINDOOR(adapter) & 0x02 )
1389                        cpu_relax();
1390
1391                mega_cmd_done(adapter, completed, nstatus, status);
1392
1393                mega_rundoneq(adapter);
1394
1395                /* Loop through any pending requests */
1396                if(atomic_read(&adapter->quiescent) == 0) {
1397                        mega_runpendq(adapter);
1398                }
1399
1400        } while(1);
1401
1402 out_unlock:
1403
1404        spin_unlock_irqrestore(&adapter->lock, flags);
1405
1406        return IRQ_RETVAL(handled);
1407}
1408/**
1409 * mega_cmd_done()
1410 * @adapter - pointer to our soft state
1411 * @completed - array of ids of completed commands
1412 * @nstatus - number of completed commands
1413 * @status - status of the last command completed
1414 *
1415 * Complete the commands and call the scsi mid-layer callback hooks.
1416 */
1417static void
1418mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1419{
1420        mega_ext_passthru       *epthru = NULL;
1421        struct scatterlist      *sgl;
1422        Scsi_Cmnd       *cmd = NULL;
1423        mega_passthru   *pthru = NULL;
1424        mbox_t  *mbox = NULL;
1425        u8      c;
1426        scb_t   *scb;
1427        int     islogical;
1428        int     cmdid;
1429        int     i;
1430
1431        /*
1432         * for all the commands completed, call the mid-layer callback routine
1433         * and free the scb.
1434         */
1435        for( i = 0; i < nstatus; i++ ) {
1436
1437                cmdid = completed[i];
1438
1439                if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1440                        scb = &adapter->int_scb;
1441                        cmd = scb->cmd;
1442                        mbox = (mbox_t *)scb->raw_mbox;
1443
1444                        /*
1445                         * Internal command interface do not fire the extended
1446                         * passthru or 64-bit passthru
1447                         */
1448                        pthru = scb->pthru;
1449
1450                }
1451                else {
1452                        scb = &adapter->scb_list[cmdid];
1453
1454                        /*
1455                         * Make sure f/w has completed a valid command
1456                         */
1457                        if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1458                                printk(KERN_CRIT
1459                                        "megaraid: invalid command ");
1460                                printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1461                                        cmdid, scb->state, scb->cmd);
1462
1463                                continue;
1464                        }
1465
1466                        /*
1467                         * Was a abort issued for this command
1468                         */
1469                        if( scb->state & SCB_ABORT ) {
1470
1471                                printk(KERN_WARNING
1472                                "megaraid: aborted cmd [%x] complete.\n",
1473                                        scb->idx);
1474
1475                                scb->cmd->result = (DID_ABORT << 16);
1476
1477                                list_add_tail(SCSI_LIST(scb->cmd),
1478                                                &adapter->completed_list);
1479
1480                                mega_free_scb(adapter, scb);
1481
1482                                continue;
1483                        }
1484
1485                        /*
1486                         * Was a reset issued for this command
1487                         */
1488                        if( scb->state & SCB_RESET ) {
1489
1490                                printk(KERN_WARNING
1491                                "megaraid: reset cmd [%x] complete.\n",
1492                                        scb->idx);
1493
1494                                scb->cmd->result = (DID_RESET << 16);
1495
1496                                list_add_tail(SCSI_LIST(scb->cmd),
1497                                                &adapter->completed_list);
1498
1499                                mega_free_scb (adapter, scb);
1500
1501                                continue;
1502                        }
1503
1504                        cmd = scb->cmd;
1505                        pthru = scb->pthru;
1506                        epthru = scb->epthru;
1507                        mbox = (mbox_t *)scb->raw_mbox;
1508
1509#if MEGA_HAVE_STATS
1510                        {
1511
1512                        int     logdrv = mbox->m_out.logdrv;
1513
1514                        islogical = adapter->logdrv_chan[cmd->channel];
1515                        /*
1516                         * Maintain an error counter for the logical drive.
1517                         * Some application like SNMP agent need such
1518                         * statistics
1519                         */
1520                        if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521                                                cmd->cmnd[0] == READ_10 ||
1522                                                cmd->cmnd[0] == READ_12)) {
1523                                /*
1524                                 * Logical drive number increases by 0x80 when
1525                                 * a logical drive is deleted
1526                                 */
1527                                adapter->rd_errors[logdrv%0x80]++;
1528                        }
1529
1530                        if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531                                                cmd->cmnd[0] == WRITE_10 ||
1532                                                cmd->cmnd[0] == WRITE_12)) {
1533                                /*
1534                                 * Logical drive number increases by 0x80 when
1535                                 * a logical drive is deleted
1536                                 */
1537                                adapter->wr_errors[logdrv%0x80]++;
1538                        }
1539
1540                        }
1541#endif
1542                }
1543
1544                /*
1545                 * Do not return the presence of hard disk on the channel so,
1546                 * inquiry sent, and returned data==hard disk or removable
1547                 * hard disk and not logical, request should return failure! -
1548                 * PJ
1549                 */
1550                islogical = adapter->logdrv_chan[cmd->device->channel];
1551                if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553                        sgl = scsi_sglist(cmd);
1554                        if( sg_page(sgl) ) {
1555                                c = *(unsigned char *) sg_virt(&sgl[0]);
1556                        } else {
1557                                printk(KERN_WARNING
1558                                       "megaraid: invalid sg.\n");
1559                                c = 0;
1560                        }
1561
1562                        if(IS_RAID_CH(adapter, cmd->device->channel) &&
1563                                        ((c & 0x1F ) == TYPE_DISK)) {
1564                                status = 0xF0;
1565                        }
1566                }
1567
1568                /* clear result; otherwise, success returns corrupt value */
1569                cmd->result = 0;
1570
1571                /* Convert MegaRAID status to Linux error code */
1572                switch (status) {
1573                case 0x00:      /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1574                        cmd->result |= (DID_OK << 16);
1575                        break;
1576
1577                case 0x02:      /* ERROR_ABORTED, i.e.
1578                                   SCSI_STATUS_CHECK_CONDITION */
1579
1580                        /* set sense_buffer and result fields */
1581                        if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1582                                mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1583
1584                                memcpy(cmd->sense_buffer, pthru->reqsensearea,
1585                                                14);
1586
1587                                cmd->result = (DRIVER_SENSE << 24) |
1588                                        (DID_OK << 16) |
1589                                        (CHECK_CONDITION << 1);
1590                        }
1591                        else {
1592                                if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1593
1594                                        memcpy(cmd->sense_buffer,
1595                                                epthru->reqsensearea, 14);
1596
1597                                        cmd->result = (DRIVER_SENSE << 24) |
1598                                                (DID_OK << 16) |
1599                                                (CHECK_CONDITION << 1);
1600                                } else {
1601                                        cmd->sense_buffer[0] = 0x70;
1602                                        cmd->sense_buffer[2] = ABORTED_COMMAND;
1603                                        cmd->result |= (CHECK_CONDITION << 1);
1604                                }
1605                        }
1606                        break;
1607
1608                case 0x08:      /* ERR_DEST_DRIVE_FAILED, i.e.
1609                                   SCSI_STATUS_BUSY */
1610                        cmd->result |= (DID_BUS_BUSY << 16) | status;
1611                        break;
1612
1613                default:
1614#if MEGA_HAVE_CLUSTERING
1615                        /*
1616                         * If TEST_UNIT_READY fails, we know
1617                         * MEGA_RESERVATION_STATUS failed
1618                         */
1619                        if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1620                                cmd->result |= (DID_ERROR << 16) |
1621                                        (RESERVATION_CONFLICT << 1);
1622                        }
1623                        else
1624                        /*
1625                         * Error code returned is 1 if Reserve or Release
1626                         * failed or the input parameter is invalid
1627                         */
1628                        if( status == 1 &&
1629                                (cmd->cmnd[0] == RESERVE ||
1630                                         cmd->cmnd[0] == RELEASE) ) {
1631
1632                                cmd->result |= (DID_ERROR << 16) |
1633                                        (RESERVATION_CONFLICT << 1);
1634                        }
1635                        else
1636#endif
1637                                cmd->result |= (DID_BAD_TARGET << 16)|status;
1638                }
1639
1640                /*
1641                 * Only free SCBs for the commands coming down from the
1642                 * mid-layer, not for which were issued internally
1643                 *
1644                 * For internal command, restore the status returned by the
1645                 * firmware so that user can interpret it.
1646                 */
1647                if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1648                        cmd->result = status;
1649
1650                        /*
1651                         * Remove the internal command from the pending list
1652                         */
1653                        list_del_init(&scb->list);
1654                        scb->state = SCB_FREE;
1655                }
1656                else {
1657                        mega_free_scb(adapter, scb);
1658                }
1659
1660                /* Add Scsi_Command to end of completed queue */
1661                list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1662        }
1663}
1664
1665
1666/*
1667 * mega_runpendq()
1668 *
1669 * Run through the list of completed requests and finish it
1670 */
1671static void
1672mega_rundoneq (adapter_t *adapter)
1673{
1674        Scsi_Cmnd *cmd;
1675        struct list_head *pos;
1676
1677        list_for_each(pos, &adapter->completed_list) {
1678
1679                struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1680
1681                cmd = list_entry(spos, Scsi_Cmnd, SCp);
1682                cmd->scsi_done(cmd);
1683        }
1684
1685        INIT_LIST_HEAD(&adapter->completed_list);
1686}
1687
1688
1689/*
1690 * Free a SCB structure
1691 * Note: We assume the scsi commands associated with this scb is not free yet.
1692 */
1693static void
1694mega_free_scb(adapter_t *adapter, scb_t *scb)
1695{
1696        switch( scb->dma_type ) {
1697
1698        case MEGA_DMA_TYPE_NONE:
1699                break;
1700
1701        case MEGA_SGLIST:
1702                scsi_dma_unmap(scb->cmd);
1703                break;
1704        default:
1705                break;
1706        }
1707
1708        /*
1709         * Remove from the pending list
1710         */
1711        list_del_init(&scb->list);
1712
1713        /* Link the scb back into free list */
1714        scb->state = SCB_FREE;
1715        scb->cmd = NULL;
1716
1717        list_add(&scb->list, &adapter->free_list);
1718}
1719
1720
1721static int
1722__mega_busywait_mbox (adapter_t *adapter)
1723{
1724        volatile mbox_t *mbox = adapter->mbox;
1725        long counter;
1726
1727        for (counter = 0; counter < 10000; counter++) {
1728                if (!mbox->m_in.busy)
1729                        return 0;
1730                udelay(100);
1731                cond_resched();
1732        }
1733        return -1;              /* give up after 1 second */
1734}
1735
1736/*
1737 * Copies data to SGLIST
1738 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1739 */
1740static int
1741mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1742{
1743        struct scatterlist *sg;
1744        Scsi_Cmnd       *cmd;
1745        int     sgcnt;
1746        int     idx;
1747
1748        cmd = scb->cmd;
1749
1750        /*
1751         * Copy Scatter-Gather list info into controller structure.
1752         *
1753         * The number of sg elements returned must not exceed our limit
1754         */
1755        sgcnt = scsi_dma_map(cmd);
1756
1757        scb->dma_type = MEGA_SGLIST;
1758
1759        BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1760
1761        *len = 0;
1762
1763        if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1764                sg = scsi_sglist(cmd);
1765                scb->dma_h_bulkdata = sg_dma_address(sg);
1766                *buf = (u32)scb->dma_h_bulkdata;
1767                *len = sg_dma_len(sg);
1768                return 0;
1769        }
1770
1771        scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1772                if (adapter->has_64bit_addr) {
1773                        scb->sgl64[idx].address = sg_dma_address(sg);
1774                        *len += scb->sgl64[idx].length = sg_dma_len(sg);
1775                } else {
1776                        scb->sgl[idx].address = sg_dma_address(sg);
1777                        *len += scb->sgl[idx].length = sg_dma_len(sg);
1778                }
1779        }
1780
1781        /* Reset pointer and length fields */
1782        *buf = scb->sgl_dma_addr;
1783
1784        /* Return count of SG requests */
1785        return sgcnt;
1786}
1787
1788
1789/*
1790 * mega_8_to_40ld()
1791 *
1792 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1793 * Enquiry3 structures for later use
1794 */
1795static void
1796mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1797                mega_product_info *product_info)
1798{
1799        int i;
1800
1801        product_info->max_commands = inquiry->adapter_info.max_commands;
1802        enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1803        product_info->nchannels = inquiry->adapter_info.nchannels;
1804
1805        for (i = 0; i < 4; i++) {
1806                product_info->fw_version[i] =
1807                        inquiry->adapter_info.fw_version[i];
1808
1809                product_info->bios_version[i] =
1810                        inquiry->adapter_info.bios_version[i];
1811        }
1812        enquiry3->cache_flush_interval =
1813                inquiry->adapter_info.cache_flush_interval;
1814
1815        product_info->dram_size = inquiry->adapter_info.dram_size;
1816
1817        enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1818
1819        for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1820                enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1821                enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1822                enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1823        }
1824
1825        for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1826                enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1827}
1828
1829static inline void
1830mega_free_sgl(adapter_t *adapter)
1831{
1832        scb_t   *scb;
1833        int     i;
1834
1835        for(i = 0; i < adapter->max_cmds; i++) {
1836
1837                scb = &adapter->scb_list[i];
1838
1839                if( scb->sgl64 ) {
1840                        pci_free_consistent(adapter->dev,
1841                                sizeof(mega_sgl64) * adapter->sglen,
1842                                scb->sgl64,
1843                                scb->sgl_dma_addr);
1844
1845                        scb->sgl64 = NULL;
1846                }
1847
1848                if( scb->pthru ) {
1849                        pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1850                                scb->pthru, scb->pthru_dma_addr);
1851
1852                        scb->pthru = NULL;
1853                }
1854
1855                if( scb->epthru ) {
1856                        pci_free_consistent(adapter->dev,
1857                                sizeof(mega_ext_passthru),
1858                                scb->epthru, scb->epthru_dma_addr);
1859
1860                        scb->epthru = NULL;
1861                }
1862
1863        }
1864}
1865
1866
1867/*
1868 * Get information about the card/driver
1869 */
1870const char *
1871megaraid_info(struct Scsi_Host *host)
1872{
1873        static char buffer[512];
1874        adapter_t *adapter;
1875
1876        adapter = (adapter_t *)host->hostdata;
1877
1878        sprintf (buffer,
1879                 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1880                 adapter->fw_version, adapter->product_info.max_commands,
1881                 adapter->host->max_id, adapter->host->max_channel,
1882                 adapter->host->max_lun);
1883        return buffer;
1884}
1885
1886/*
1887 * Abort a previous SCSI request. Only commands on the pending list can be
1888 * aborted. All the commands issued to the F/W must complete.
1889 */
1890static int
1891megaraid_abort(Scsi_Cmnd *cmd)
1892{
1893        adapter_t       *adapter;
1894        int             rval;
1895
1896        adapter = (adapter_t *)cmd->device->host->hostdata;
1897
1898        rval =  megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1899
1900        /*
1901         * This is required here to complete any completed requests
1902         * to be communicated over to the mid layer.
1903         */
1904        mega_rundoneq(adapter);
1905
1906        return rval;
1907}
1908
1909
1910static int
1911megaraid_reset(struct scsi_cmnd *cmd)
1912{
1913        adapter_t       *adapter;
1914        megacmd_t       mc;
1915        int             rval;
1916
1917        adapter = (adapter_t *)cmd->device->host->hostdata;
1918
1919#if MEGA_HAVE_CLUSTERING
1920        mc.cmd = MEGA_CLUSTER_CMD;
1921        mc.opcode = MEGA_RESET_RESERVATIONS;
1922
1923        if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1924                printk(KERN_WARNING
1925                                "megaraid: reservation reset failed.\n");
1926        }
1927        else {
1928                printk(KERN_INFO "megaraid: reservation reset.\n");
1929        }
1930#endif
1931
1932        spin_lock_irq(&adapter->lock);
1933
1934        rval =  megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1935
1936        /*
1937         * This is required here to complete any completed requests
1938         * to be communicated over to the mid layer.
1939         */
1940        mega_rundoneq(adapter);
1941        spin_unlock_irq(&adapter->lock);
1942
1943        return rval;
1944}
1945
1946/**
1947 * megaraid_abort_and_reset()
1948 * @adapter - megaraid soft state
1949 * @cmd - scsi command to be aborted or reset
1950 * @aor - abort or reset flag
1951 *
1952 * Try to locate the scsi command in the pending queue. If found and is not
1953 * issued to the controller, abort/reset it. Otherwise return failure
1954 */
1955static int
1956megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1957{
1958        struct list_head        *pos, *next;
1959        scb_t                   *scb;
1960
1961        printk(KERN_WARNING "megaraid: %s cmd=%x <c=%d t=%d l=%d>\n",
1962             (aor == SCB_ABORT)? "ABORTING":"RESET",
1963             cmd->cmnd[0], cmd->device->channel, 
1964             cmd->device->id, cmd->device->lun);
1965
1966        if(list_empty(&adapter->pending_list))
1967                return FALSE;
1968
1969        list_for_each_safe(pos, next, &adapter->pending_list) {
1970
1971                scb = list_entry(pos, scb_t, list);
1972
1973                if (scb->cmd == cmd) { /* Found command */
1974
1975                        scb->state |= aor;
1976
1977                        /*
1978                         * Check if this command has firmware ownership. If
1979                         * yes, we cannot reset this command. Whenever f/w
1980                         * completes this command, we will return appropriate
1981                         * status from ISR.
1982                         */
1983                        if( scb->state & SCB_ISSUED ) {
1984
1985                                printk(KERN_WARNING
1986                                        "megaraid: %s[%x], fw owner.\n",
1987                                        (aor==SCB_ABORT) ? "ABORTING":"RESET",
1988                                        scb->idx);
1989
1990                                return FALSE;
1991                        }
1992                        else {
1993
1994                                /*
1995                                 * Not yet issued! Remove from the pending
1996                                 * list
1997                                 */
1998                                printk(KERN_WARNING
1999                                        "megaraid: %s-[%x], driver owner.\n",
2000                                        (aor==SCB_ABORT) ? "ABORTING":"RESET",
2001                                        scb->idx);
2002
2003                                mega_free_scb(adapter, scb);
2004
2005                                if( aor == SCB_ABORT ) {
2006                                        cmd->result = (DID_ABORT << 16);
2007                                }
2008                                else {
2009                                        cmd->result = (DID_RESET << 16);
2010                                }
2011
2012                                list_add_tail(SCSI_LIST(cmd),
2013                                                &adapter->completed_list);
2014
2015                                return TRUE;
2016                        }
2017                }
2018        }
2019
2020        return FALSE;
2021}
2022
2023static inline int
2024make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2025{
2026        *pdev = alloc_pci_dev();
2027
2028        if( *pdev == NULL ) return -1;
2029
2030        memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2031
2032        if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2033                kfree(*pdev);
2034                return -1;
2035        }
2036
2037        return 0;
2038}
2039
2040static inline void
2041free_local_pdev(struct pci_dev *pdev)
2042{
2043        kfree(pdev);
2044}
2045
2046/**
2047 * mega_allocate_inquiry()
2048 * @dma_handle - handle returned for dma address
2049 * @pdev - handle to pci device
2050 *
2051 * allocates memory for inquiry structure
2052 */
2053static inline void *
2054mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2055{
2056        return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2057}
2058
2059
2060static inline void
2061mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2062{
2063        pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2064}
2065
2066
2067#ifdef CONFIG_PROC_FS
2068/* Following code handles /proc fs  */
2069
2070#define CREATE_READ_PROC(string, func)  create_proc_read_entry(string,  \
2071                                        S_IRUSR | S_IFREG,              \
2072                                        controller_proc_dir_entry,      \
2073                                        func, adapter)
2074
2075/**
2076 * mega_create_proc_entry()
2077 * @index - index in soft state array
2078 * @parent - parent node for this /proc entry
2079 *
2080 * Creates /proc entries for our controllers.
2081 */
2082static void
2083mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2084{
2085        struct proc_dir_entry   *controller_proc_dir_entry = NULL;
2086        u8              string[64] = { 0 };
2087        adapter_t       *adapter = hba_soft_state[index];
2088
2089        sprintf(string, "hba%d", adapter->host->host_no);
2090
2091        controller_proc_dir_entry =
2092                adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2093
2094        if(!controller_proc_dir_entry) {
2095                printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2096                return;
2097        }
2098        adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2099        adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2100        adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2101#if MEGA_HAVE_ENH_PROC
2102        adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2103        adapter->proc_battery = CREATE_READ_PROC("battery-status",
2104                        proc_battery);
2105
2106        /*
2107         * Display each physical drive on its channel
2108         */
2109        adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2110                                        proc_pdrv_ch0);
2111        adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2112                                        proc_pdrv_ch1);
2113        adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2114                                        proc_pdrv_ch2);
2115        adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2116                                        proc_pdrv_ch3);
2117
2118        /*
2119         * Display a set of up to 10 logical drive through each of following
2120         * /proc entries
2121         */
2122        adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2123                                        proc_rdrv_10);
2124        adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2125                                        proc_rdrv_20);
2126        adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2127                                        proc_rdrv_30);
2128        adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2129                                        proc_rdrv_40);
2130#endif
2131}
2132
2133
2134/**
2135 * proc_read_config()
2136 * @page - buffer to write the data in
2137 * @start - where the actual data has been written in page
2138 * @offset - same meaning as the read system call
2139 * @count - same meaning as the read system call
2140 * @eof - set if no more data needs to be returned
2141 * @data - pointer to our soft state
2142 *
2143 * Display configuration information about the controller.
2144 */
2145static int
2146proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2147                void *data)
2148{
2149
2150        adapter_t *adapter = (adapter_t *)data;
2151        int len = 0;
2152
2153        len += sprintf(page+len, "%s", MEGARAID_VERSION);
2154
2155        if(adapter->product_info.product_name[0])
2156                len += sprintf(page+len, "%s\n",
2157                                adapter->product_info.product_name);
2158
2159        len += sprintf(page+len, "Controller Type: ");
2160
2161        if( adapter->flag & BOARD_MEMMAP ) {
2162                len += sprintf(page+len,
2163                        "438/466/467/471/493/518/520/531/532\n");
2164        }
2165        else {
2166                len += sprintf(page+len,
2167                        "418/428/434\n");
2168        }
2169
2170        if(adapter->flag & BOARD_40LD) {
2171                len += sprintf(page+len,
2172                                "Controller Supports 40 Logical Drives\n");
2173        }
2174
2175        if(adapter->flag & BOARD_64BIT) {
2176                len += sprintf(page+len,
2177                "Controller capable of 64-bit memory addressing\n");
2178        }
2179        if( adapter->has_64bit_addr ) {
2180                len += sprintf(page+len,
2181                        "Controller using 64-bit memory addressing\n");
2182        }
2183        else {
2184                len += sprintf(page+len,
2185                        "Controller is not using 64-bit memory addressing\n");
2186        }
2187
2188        len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2189                        adapter->host->irq);
2190
2191        len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2192                        adapter->numldrv, adapter->product_info.nchannels);
2193
2194        len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2195                        adapter->fw_version, adapter->bios_version,
2196                        adapter->product_info.dram_size);
2197
2198        len += sprintf(page+len,
2199                "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2200                adapter->product_info.max_commands, adapter->max_cmds);
2201
2202        len += sprintf(page+len, "support_ext_cdb    = %d\n",
2203                        adapter->support_ext_cdb);
2204        len += sprintf(page+len, "support_random_del = %d\n",
2205                        adapter->support_random_del);
2206        len += sprintf(page+len, "boot_ldrv_enabled  = %d\n",
2207                        adapter->boot_ldrv_enabled);
2208        len += sprintf(page+len, "boot_ldrv          = %d\n",
2209                        adapter->boot_ldrv);
2210        len += sprintf(page+len, "boot_pdrv_enabled  = %d\n",
2211                        adapter->boot_pdrv_enabled);
2212        len += sprintf(page+len, "boot_pdrv_ch       = %d\n",
2213                        adapter->boot_pdrv_ch);
2214        len += sprintf(page+len, "boot_pdrv_tgt      = %d\n",
2215                        adapter->boot_pdrv_tgt);
2216        len += sprintf(page+len, "quiescent          = %d\n",
2217                        atomic_read(&adapter->quiescent));
2218        len += sprintf(page+len, "has_cluster        = %d\n",
2219                        adapter->has_cluster);
2220
2221        len += sprintf(page+len, "\nModule Parameters:\n");
2222        len += sprintf(page+len, "max_cmd_per_lun    = %d\n",
2223                        max_cmd_per_lun);
2224        len += sprintf(page+len, "max_sectors_per_io = %d\n",
2225                        max_sectors_per_io);
2226
2227        *eof = 1;
2228
2229        return len;
2230}
2231
2232
2233
2234/**
2235 * proc_read_stat()
2236 * @page - buffer to write the data in
2237 * @start - where the actual data has been written in page
2238 * @offset - same meaning as the read system call
2239 * @count - same meaning as the read system call
2240 * @eof - set if no more data needs to be returned
2241 * @data - pointer to our soft state
2242 *
2243 * Diaplay statistical information about the I/O activity.
2244 */
2245static int
2246proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2247                void *data)
2248{
2249        adapter_t       *adapter;
2250        int     len;
2251        int     i;
2252
2253        i = 0;  /* avoid compilation warnings */
2254        len = 0;
2255        adapter = (adapter_t *)data;
2256
2257        len = sprintf(page, "Statistical Information for this controller\n");
2258        len += sprintf(page+len, "pend_cmds = %d\n",
2259                        atomic_read(&adapter->pend_cmds));
2260#if MEGA_HAVE_STATS
2261        for(i = 0; i < adapter->numldrv; i++) {
2262                len += sprintf(page+len, "Logical Drive %d:\n", i);
2263
2264                len += sprintf(page+len,
2265                        "\tReads Issued = %lu, Writes Issued = %lu\n",
2266                        adapter->nreads[i], adapter->nwrites[i]);
2267
2268                len += sprintf(page+len,
2269                        "\tSectors Read = %lu, Sectors Written = %lu\n",
2270                        adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2271
2272                len += sprintf(page+len,
2273                        "\tRead errors = %lu, Write errors = %lu\n\n",
2274                        adapter->rd_errors[i], adapter->wr_errors[i]);
2275        }
2276#else
2277        len += sprintf(page+len,
2278                        "IO and error counters not compiled in driver.\n");
2279#endif
2280
2281        *eof = 1;
2282
2283        return len;
2284}
2285
2286
2287/**
2288 * proc_read_mbox()
2289 * @page - buffer to write the data in
2290 * @start - where the actual data has been written in page
2291 * @offset - same meaning as the read system call
2292 * @count - same meaning as the read system call
2293 * @eof - set if no more data needs to be returned
2294 * @data - pointer to our soft state
2295 *
2296 * Display mailbox information for the last command issued. This information
2297 * is good for debugging.
2298 */
2299static int
2300proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2301                void *data)
2302{
2303
2304        adapter_t       *adapter = (adapter_t *)data;
2305        volatile mbox_t *mbox = adapter->mbox;
2306        int     len = 0;
2307
2308        len = sprintf(page, "Contents of Mail Box Structure\n");
2309        len += sprintf(page+len, "  Fw Command   = 0x%02x\n", 
2310                        mbox->m_out.cmd);
2311        len += sprintf(page+len, "  Cmd Sequence = 0x%02x\n", 
2312                        mbox->m_out.cmdid);
2313        len += sprintf(page+len, "  No of Sectors= %04d\n", 
2314                        mbox->m_out.numsectors);
2315        len += sprintf(page+len, "  LBA          = 0x%02x\n", 
2316                        mbox->m_out.lba);
2317        len += sprintf(page+len, "  DTA          = 0x%08x\n", 
2318                        mbox->m_out.xferaddr);
2319        len += sprintf(page+len, "  Logical Drive= 0x%02x\n", 
2320                        mbox->m_out.logdrv);
2321        len += sprintf(page+len, "  No of SG Elmt= 0x%02x\n",
2322                        mbox->m_out.numsgelements);
2323        len += sprintf(page+len, "  Busy         = %01x\n", 
2324                        mbox->m_in.busy);
2325        len += sprintf(page+len, "  Status       = 0x%02x\n", 
2326                        mbox->m_in.status);
2327
2328        *eof = 1;
2329
2330        return len;
2331}
2332
2333
2334/**
2335 * proc_rebuild_rate()
2336 * @page - buffer to write the data in
2337 * @start - where the actual data has been written in page
2338 * @offset - same meaning as the read system call
2339 * @count - same meaning as the read system call
2340 * @eof - set if no more data needs to be returned
2341 * @data - pointer to our soft state
2342 *
2343 * Display current rebuild rate
2344 */
2345static int
2346proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2347                void *data)
2348{
2349        adapter_t       *adapter = (adapter_t *)data;
2350        dma_addr_t      dma_handle;
2351        caddr_t         inquiry;
2352        struct pci_dev  *pdev;
2353        int     len = 0;
2354
2355        if( make_local_pdev(adapter, &pdev) != 0 ) {
2356                *eof = 1;
2357                return len;
2358        }
2359
2360        if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2361                free_local_pdev(pdev);
2362                *eof = 1;
2363                return len;
2364        }
2365
2366        if( mega_adapinq(adapter, dma_handle) != 0 ) {
2367
2368                len = sprintf(page, "Adapter inquiry failed.\n");
2369
2370                printk(KERN_WARNING "megaraid: inquiry failed.\n");
2371
2372                mega_free_inquiry(inquiry, dma_handle, pdev);
2373
2374                free_local_pdev(pdev);
2375
2376                *eof = 1;
2377
2378                return len;
2379        }
2380
2381        if( adapter->flag & BOARD_40LD ) {
2382                len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2383                        ((mega_inquiry3 *)inquiry)->rebuild_rate);
2384        }
2385        else {
2386                len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2387                        ((mraid_ext_inquiry *)
2388                        inquiry)->raid_inq.adapter_info.rebuild_rate);
2389        }
2390
2391
2392        mega_free_inquiry(inquiry, dma_handle, pdev);
2393
2394        free_local_pdev(pdev);
2395
2396        *eof = 1;
2397
2398        return len;
2399}
2400
2401
2402/**
2403 * proc_battery()
2404 * @page - buffer to write the data in
2405 * @start - where the actual data has been written in page
2406 * @offset - same meaning as the read system call
2407 * @count - same meaning as the read system call
2408 * @eof - set if no more data needs to be returned
2409 * @data - pointer to our soft state
2410 *
2411 * Display information about the battery module on the controller.
2412 */
2413static int
2414proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2415                void *data)
2416{
2417        adapter_t       *adapter = (adapter_t *)data;
2418        dma_addr_t      dma_handle;
2419        caddr_t         inquiry;
2420        struct pci_dev  *pdev;
2421        u8      battery_status = 0;
2422        char    str[256];
2423        int     len = 0;
2424
2425        if( make_local_pdev(adapter, &pdev) != 0 ) {
2426                *eof = 1;
2427                return len;
2428        }
2429
2430        if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2431                free_local_pdev(pdev);
2432                *eof = 1;
2433                return len;
2434        }
2435
2436        if( mega_adapinq(adapter, dma_handle) != 0 ) {
2437
2438                len = sprintf(page, "Adapter inquiry failed.\n");
2439
2440                printk(KERN_WARNING "megaraid: inquiry failed.\n");
2441
2442                mega_free_inquiry(inquiry, dma_handle, pdev);
2443
2444                free_local_pdev(pdev);
2445
2446                *eof = 1;
2447
2448                return len;
2449        }
2450
2451        if( adapter->flag & BOARD_40LD ) {
2452                battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2453        }
2454        else {
2455                battery_status = ((mraid_ext_inquiry *)inquiry)->
2456                        raid_inq.adapter_info.battery_status;
2457        }
2458
2459        /*
2460         * Decode the battery status
2461         */
2462        sprintf(str, "Battery Status:[%d]", battery_status);
2463
2464        if(battery_status == MEGA_BATT_CHARGE_DONE)
2465                strcat(str, " Charge Done");
2466
2467        if(battery_status & MEGA_BATT_MODULE_MISSING)
2468                strcat(str, " Module Missing");
2469        
2470        if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2471                strcat(str, " Low Voltage");
2472        
2473        if(battery_status & MEGA_BATT_TEMP_HIGH)
2474                strcat(str, " Temperature High");
2475        
2476        if(battery_status & MEGA_BATT_PACK_MISSING)
2477                strcat(str, " Pack Missing");
2478        
2479        if(battery_status & MEGA_BATT_CHARGE_INPROG)
2480                strcat(str, " Charge In-progress");
2481        
2482        if(battery_status & MEGA_BATT_CHARGE_FAIL)
2483                strcat(str, " Charge Fail");
2484        
2485        if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2486                strcat(str, " Cycles Exceeded");
2487
2488        len = sprintf(page, "%s\n", str);
2489
2490
2491        mega_free_inquiry(inquiry, dma_handle, pdev);
2492
2493        free_local_pdev(pdev);
2494
2495        *eof = 1;
2496
2497        return len;
2498}
2499
2500
2501/**
2502 * proc_pdrv_ch0()
2503 * @page - buffer to write the data in
2504 * @start - where the actual data has been written in page
2505 * @offset - same meaning as the read system call
2506 * @count - same meaning as the read system call
2507 * @eof - set if no more data needs to be returned
2508 * @data - pointer to our soft state
2509 *
2510 * Display information about the physical drives on physical channel 0.
2511 */
2512static int
2513proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2514                void *data)
2515{
2516        adapter_t *adapter = (adapter_t *)data;
2517
2518        *eof = 1;
2519
2520        return (proc_pdrv(adapter, page, 0));
2521}
2522
2523
2524/**
2525 * proc_pdrv_ch1()
2526 * @page - buffer to write the data in
2527 * @start - where the actual data has been written in page
2528 * @offset - same meaning as the read system call
2529 * @count - same meaning as the read system call
2530 * @eof - set if no more data needs to be returned
2531 * @data - pointer to our soft state
2532 *
2533 * Display information about the physical drives on physical channel 1.
2534 */
2535static int
2536proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2537                void *data)
2538{
2539        adapter_t *adapter = (adapter_t *)data;
2540
2541        *eof = 1;
2542
2543        return (proc_pdrv(adapter, page, 1));
2544}
2545
2546
2547/**
2548 * proc_pdrv_ch2()
2549 * @page - buffer to write the data in
2550 * @start - where the actual data has been written in page
2551 * @offset - same meaning as the read system call
2552 * @count - same meaning as the read system call
2553 * @eof - set if no more data needs to be returned
2554 * @data - pointer to our soft state
2555 *
2556 * Display information about the physical drives on physical channel 2.
2557 */
2558static int
2559proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2560                void *data)
2561{
2562        adapter_t *adapter = (adapter_t *)data;
2563
2564        *eof = 1;
2565
2566        return (proc_pdrv(adapter, page, 2));
2567}
2568
2569
2570/**
2571 * proc_pdrv_ch3()
2572 * @page - buffer to write the data in
2573 * @start - where the actual data has been written in page
2574 * @offset - same meaning as the read system call
2575 * @count - same meaning as the read system call
2576 * @eof - set if no more data needs to be returned
2577 * @data - pointer to our soft state
2578 *
2579 * Display information about the physical drives on physical channel 3.
2580 */
2581static int
2582proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2583                void *data)
2584{
2585        adapter_t *adapter = (adapter_t *)data;
2586
2587        *eof = 1;
2588
2589        return (proc_pdrv(adapter, page, 3));
2590}
2591
2592
2593/**
2594 * proc_pdrv()
2595 * @page - buffer to write the data in
2596 * @adapter - pointer to our soft state
2597 *
2598 * Display information about the physical drives.
2599 */
2600static int
2601proc_pdrv(adapter_t *adapter, char *page, int channel)
2602{
2603        dma_addr_t      dma_handle;
2604        char            *scsi_inq;
2605        dma_addr_t      scsi_inq_dma_handle;
2606        caddr_t         inquiry;
2607        struct pci_dev  *pdev;
2608        u8      *pdrv_state;
2609        u8      state;
2610        int     tgt;
2611        int     max_channels;
2612        int     len = 0;
2613        char    str[80];
2614        int     i;
2615
2616        if( make_local_pdev(adapter, &pdev) != 0 ) {
2617                return len;
2618        }
2619
2620        if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2621                goto free_pdev;
2622        }
2623
2624        if( mega_adapinq(adapter, dma_handle) != 0 ) {
2625                len = sprintf(page, "Adapter inquiry failed.\n");
2626
2627                printk(KERN_WARNING "megaraid: inquiry failed.\n");
2628
2629                goto free_inquiry;
2630        }
2631
2632
2633        scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2634
2635        if( scsi_inq == NULL ) {
2636                len = sprintf(page, "memory not available for scsi inq.\n");
2637
2638                goto free_inquiry;
2639        }
2640
2641        if( adapter->flag & BOARD_40LD ) {
2642                pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2643        }
2644        else {
2645                pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2646                        raid_inq.pdrv_info.pdrv_state;
2647        }
2648
2649        max_channels = adapter->product_info.nchannels;
2650
2651        if( channel >= max_channels ) {
2652                goto free_pci;
2653        }
2654
2655        for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2656
2657                i = channel*16 + tgt;
2658
2659                state = *(pdrv_state + i);
2660
2661                switch( state & 0x0F ) {
2662
2663                case PDRV_ONLINE:
2664                        sprintf(str,
2665                        "Channel:%2d Id:%2d State: Online",
2666                                channel, tgt);
2667                        break;
2668
2669                case PDRV_FAILED:
2670                        sprintf(str,
2671                        "Channel:%2d Id:%2d State: Failed",
2672                                channel, tgt);
2673                        break;
2674
2675                case PDRV_RBLD:
2676                        sprintf(str,
2677                        "Channel:%2d Id:%2d State: Rebuild",
2678                                channel, tgt);
2679                        break;
2680
2681                case PDRV_HOTSPARE:
2682                        sprintf(str,
2683                        "Channel:%2d Id:%2d State: Hot spare",
2684                                channel, tgt);
2685                        break;
2686
2687                default:
2688                        sprintf(str,
2689                        "Channel:%2d Id:%2d State: Un-configured",
2690                                channel, tgt);
2691                        break;
2692
2693                }
2694
2695                /*
2696                 * This interface displays inquiries for disk drives
2697                 * only. Inquries for logical drives and non-disk
2698                 * devices are available through /proc/scsi/scsi
2699                 */
2700                memset(scsi_inq, 0, 256);
2701                if( mega_internal_dev_inquiry(adapter, channel, tgt,
2702                                scsi_inq_dma_handle) ||
2703                                (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2704                        continue;
2705                }
2706
2707                /*
2708                 * Check for overflow. We print less than 240
2709                 * characters for inquiry
2710                 */
2711                if( (len + 240) >= PAGE_SIZE ) break;
2712
2713                len += sprintf(page+len, "%s.\n", str);
2714
2715                len += mega_print_inquiry(page+len, scsi_inq);
2716        }
2717
2718free_pci:
2719        pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2720free_inquiry:
2721        mega_free_inquiry(inquiry, dma_handle, pdev);
2722free_pdev:
2723        free_local_pdev(pdev);
2724
2725        return len;
2726}
2727
2728
2729/*
2730 * Display scsi inquiry
2731 */
2732static int
2733mega_print_inquiry(char *page, char *scsi_inq)
2734{
2735        int     len = 0;
2736        int     i;
2737
2738        len = sprintf(page, "  Vendor: ");
2739        for( i = 8; i < 16; i++ ) {
2740                len += sprintf(page+len, "%c", scsi_inq[i]);
2741        }
2742
2743        len += sprintf(page+len, "  Model: ");
2744
2745        for( i = 16; i < 32; i++ ) {
2746                len += sprintf(page+len, "%c", scsi_inq[i]);
2747        }
2748
2749        len += sprintf(page+len, "  Rev: ");
2750
2751        for( i = 32; i < 36; i++ ) {
2752                len += sprintf(page+len, "%c", scsi_inq[i]);
2753        }
2754
2755        len += sprintf(page+len, "\n");
2756
2757        i = scsi_inq[0] & 0x1f;
2758
2759        len += sprintf(page+len, "  Type:   %s ", scsi_device_type(i));
2760
2761        len += sprintf(page+len,
2762        "                 ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2763
2764        if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2765                len += sprintf(page+len, " CCS\n");
2766        else
2767                len += sprintf(page+len, "\n");
2768
2769        return len;
2770}
2771
2772
2773/**
2774 * proc_rdrv_10()
2775 * @page - buffer to write the data in
2776 * @start - where the actual data has been written in page
2777 * @offset - same meaning as the read system call
2778 * @count - same meaning as the read system call
2779 * @eof - set if no more data needs to be returned
2780 * @data - pointer to our soft state
2781 *
2782 * Display real time information about the logical drives 0 through 9.
2783 */
2784static int
2785proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2786                void *data)
2787{
2788        adapter_t *adapter = (adapter_t *)data;
2789
2790        *eof = 1;
2791
2792        return (proc_rdrv(adapter, page, 0, 9));
2793}
2794
2795
2796/**
2797 * proc_rdrv_20()
2798 * @page - buffer to write the data in
2799 * @start - where the actual data has been written in page
2800 * @offset - same meaning as the read system call
2801 * @count - same meaning as the read system call
2802 * @eof - set if no more data needs to be returned
2803 * @data - pointer to our soft state
2804 *
2805 * Display real time information about the logical drives 0 through 9.
2806 */
2807static int
2808proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2809                void *data)
2810{
2811        adapter_t *adapter = (adapter_t *)data;
2812
2813        *eof = 1;
2814
2815        return (proc_rdrv(adapter, page, 10, 19));
2816}
2817
2818
2819/**
2820 * proc_rdrv_30()
2821 * @page - buffer to write the data in
2822 * @start - where the actual data has been written in page
2823 * @offset - same meaning as the read system call
2824 * @count - same meaning as the read system call
2825 * @eof - set if no more data needs to be returned
2826 * @data - pointer to our soft state
2827 *
2828 * Display real time information about the logical drives 0 through 9.
2829 */
2830static int
2831proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2832                void *data)
2833{
2834        adapter_t *adapter = (adapter_t *)data;
2835
2836        *eof = 1;
2837
2838        return (proc_rdrv(adapter, page, 20, 29));
2839}
2840
2841
2842/**
2843 * proc_rdrv_40()
2844 * @page - buffer to write the data in
2845 * @start - where the actual data has been written in page
2846 * @offset - same meaning as the read system call
2847 * @count - same meaning as the read system call
2848 * @eof - set if no more data needs to be returned
2849 * @data - pointer to our soft state
2850 *
2851 * Display real time information about the logical drives 0 through 9.
2852 */
2853static int
2854proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2855                void *data)
2856{
2857        adapter_t *adapter = (adapter_t *)data;
2858
2859        *eof = 1;
2860
2861        return (proc_rdrv(adapter, page, 30, 39));
2862}
2863
2864
2865/**
2866 * proc_rdrv()
2867 * @page - buffer to write the data in
2868 * @adapter - pointer to our soft state
2869 * @start - starting logical drive to display
2870 * @end - ending logical drive to display
2871 *
2872 * We do not print the inquiry information since its already available through
2873 * /proc/scsi/scsi interface
2874 */
2875static int
2876proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2877{
2878        dma_addr_t      dma_handle;
2879        logdrv_param    *lparam;
2880        megacmd_t       mc;
2881        char            *disk_array;
2882        dma_addr_t      disk_array_dma_handle;
2883        caddr_t         inquiry;
2884        struct pci_dev  *pdev;
2885        u8      *rdrv_state;
2886        int     num_ldrv;
2887        u32     array_sz;
2888        int     len = 0;
2889        int     i;
2890
2891        if( make_local_pdev(adapter, &pdev) != 0 ) {
2892                return len;
2893        }
2894
2895        if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2896                free_local_pdev(pdev);
2897                return len;
2898        }
2899
2900        if( mega_adapinq(adapter, dma_handle) != 0 ) {
2901
2902                len = sprintf(page, "Adapter inquiry failed.\n");
2903
2904                printk(KERN_WARNING "megaraid: inquiry failed.\n");
2905
2906                mega_free_inquiry(inquiry, dma_handle, pdev);
2907
2908                free_local_pdev(pdev);
2909
2910                return len;
2911        }
2912
2913        memset(&mc, 0, sizeof(megacmd_t));
2914
2915        if( adapter->flag & BOARD_40LD ) {
2916                array_sz = sizeof(disk_array_40ld);
2917
2918                rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2919
2920                num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2921        }
2922        else {
2923                array_sz = sizeof(disk_array_8ld);
2924
2925                rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2926                        raid_inq.logdrv_info.ldrv_state;
2927
2928                num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2929                        raid_inq.logdrv_info.num_ldrv;
2930        }
2931
2932        disk_array = pci_alloc_consistent(pdev, array_sz,
2933                        &disk_array_dma_handle);
2934
2935        if( disk_array == NULL ) {
2936                len = sprintf(page, "memory not available.\n");
2937
2938                mega_free_inquiry(inquiry, dma_handle, pdev);
2939
2940                free_local_pdev(pdev);
2941
2942                return len;
2943        }
2944
2945        mc.xferaddr = (u32)disk_array_dma_handle;
2946
2947        if( adapter->flag & BOARD_40LD ) {
2948                mc.cmd = FC_NEW_CONFIG;
2949                mc.opcode = OP_DCMD_READ_CONFIG;
2950
2951                if( mega_internal_command(adapter, &mc, NULL) ) {
2952
2953                        len = sprintf(page, "40LD read config failed.\n");
2954
2955                        mega_free_inquiry(inquiry, dma_handle, pdev);
2956
2957                        pci_free_consistent(pdev, array_sz, disk_array,
2958                                        disk_array_dma_handle);
2959
2960                        free_local_pdev(pdev);
2961
2962                        return len;
2963                }
2964
2965        }
2966        else {
2967                mc.cmd = NEW_READ_CONFIG_8LD;
2968
2969                if( mega_internal_command(adapter, &mc, NULL) ) {
2970
2971                        mc.cmd = READ_CONFIG_8LD;
2972
2973                        if( mega_internal_command(adapter, &mc,
2974                                                NULL) ){
2975
2976                                len = sprintf(page,
2977                                        "8LD read config failed.\n");
2978
2979                                mega_free_inquiry(inquiry, dma_handle, pdev);
2980
2981                                pci_free_consistent(pdev, array_sz,
2982                                                disk_array,
2983                                                disk_array_dma_handle);
2984
2985                                free_local_pdev(pdev);
2986
2987                                return len;
2988                        }
2989                }
2990        }
2991
2992        for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2993
2994                if( adapter->flag & BOARD_40LD ) {
2995                        lparam =
2996                        &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2997                }
2998                else {
2999                        lparam =
3000                        &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3001                }
3002
3003                /*
3004                 * Check for overflow. We print less than 240 characters for
3005                 * information about each logical drive.
3006                 */
3007                if( (len + 240) >= PAGE_SIZE ) break;
3008
3009                len += sprintf(page+len, "Logical drive:%2d:, ", i);
3010
3011                switch( rdrv_state[i] & 0x0F ) {
3012                case RDRV_OFFLINE:
3013                        len += sprintf(page+len, "state: offline");
3014                        break;
3015
3016                case RDRV_DEGRADED:
3017                        len += sprintf(page+len, "state: degraded");
3018                        break;
3019
3020                case RDRV_OPTIMAL:
3021                        len += sprintf(page+len, "state: optimal");
3022                        break;
3023
3024                case RDRV_DELETED:
3025                        len += sprintf(page+len, "state: deleted");
3026                        break;
3027
3028                default:
3029                        len += sprintf(page+len, "state: unknown");
3030                        break;
3031                }
3032
3033                /*
3034                 * Check if check consistency or initialization is going on
3035                 * for this logical drive.
3036                 */
3037                if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3038                        len += sprintf(page+len,
3039                                        ", check-consistency in progress");
3040                }
3041                else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3042                        len += sprintf(page+len,
3043                                        ", initialization in progress");
3044                }
3045                
3046                len += sprintf(page+len, "\n");
3047
3048                len += sprintf(page+len, "Span depth:%3d, ",
3049                                lparam->span_depth);
3050
3051                len += sprintf(page+len, "RAID level:%3d, ",
3052                                lparam->level);
3053
3054                len += sprintf(page+len, "Stripe size:%3d, ",
3055                                lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3056
3057                len += sprintf(page+len, "Row size:%3d\n",
3058                                lparam->row_size);
3059
3060
3061                len += sprintf(page+len, "Read Policy: ");
3062
3063                switch(lparam->read_ahead) {
3064
3065                case NO_READ_AHEAD:
3066                        len += sprintf(page+len, "No read ahead, ");
3067                        break;
3068
3069                case READ_AHEAD:
3070                        len += sprintf(page+len, "Read ahead, ");
3071                        break;
3072
3073                case ADAP_READ_AHEAD:
3074                        len += sprintf(page+len, "Adaptive, ");
3075                        break;
3076
3077                }
3078
3079                len += sprintf(page+len, "Write Policy: ");
3080
3081                switch(lparam->write_mode) {
3082
3083                case WRMODE_WRITE_THRU:
3084                        len += sprintf(page+len, "Write thru, ");
3085                        break;
3086
3087                case WRMODE_WRITE_BACK:
3088                        len += sprintf(page+len, "Write back, ");
3089                        break;
3090                }
3091
3092                len += sprintf(page+len, "Cache Policy: ");
3093
3094                switch(lparam->direct_io) {
3095
3096                case CACHED_IO:
3097                        len += sprintf(page+len, "Cached IO\n\n");
3098                        break;
3099
3100                case DIRECT_IO:
3101                        len += sprintf(page+len, "Direct IO\n\n");
3102                        break;
3103                }
3104        }
3105
3106        mega_free_inquiry(inquiry, dma_handle, pdev);
3107
3108        pci_free_consistent(pdev, array_sz, disk_array,
3109                        disk_array_dma_handle);
3110
3111        free_local_pdev(pdev);
3112
3113        return len;
3114}
3115#else
3116static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3117{
3118}
3119#endif
3120
3121
3122/**
3123 * megaraid_biosparam()
3124 *
3125 * Return the disk geometry for a particular disk
3126 */
3127static int
3128megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3129                    sector_t capacity, int geom[])
3130{
3131        adapter_t       *adapter;
3132        unsigned char   *bh;
3133        int     heads;
3134        int     sectors;
3135        int     cylinders;
3136        int     rval;
3137
3138        /* Get pointer to host config structure */
3139        adapter = (adapter_t *)sdev->host->hostdata;
3140
3141        if (IS_RAID_CH(adapter, sdev->channel)) {
3142                        /* Default heads (64) & sectors (32) */
3143                        heads = 64;
3144                        sectors = 32;
3145                        cylinders = (ulong)capacity / (heads * sectors);
3146
3147                        /*
3148                         * Handle extended translation size for logical drives
3149                         * > 1Gb
3150                         */
3151                        if ((ulong)capacity >= 0x200000) {
3152                                heads = 255;
3153                                sectors = 63;
3154                                cylinders = (ulong)capacity / (heads * sectors);
3155                        }
3156
3157                        /* return result */
3158                        geom[0] = heads;
3159                        geom[1] = sectors;
3160                        geom[2] = cylinders;
3161        }
3162        else {
3163                bh = scsi_bios_ptable(bdev);
3164
3165                if( bh ) {
3166                        rval = scsi_partsize(bh, capacity,
3167                                            &geom[2], &geom[0], &geom[1]);
3168                        kfree(bh);
3169                        if( rval != -1 )
3170                                return rval;
3171                }
3172
3173                printk(KERN_INFO
3174                "megaraid: invalid partition on this disk on channel %d\n",
3175                                sdev->channel);
3176
3177                /* Default heads (64) & sectors (32) */
3178                heads = 64;
3179                sectors = 32;
3180                cylinders = (ulong)capacity / (heads * sectors);
3181
3182                /* Handle extended translation size for logical drives > 1Gb */
3183                if ((ulong)capacity >= 0x200000) {
3184                        heads = 255;
3185                        sectors = 63;
3186                        cylinders = (ulong)capacity / (heads * sectors);
3187                }
3188
3189                /* return result */
3190                geom[0] = heads;
3191                geom[1] = sectors;
3192                geom[2] = cylinders;
3193        }
3194
3195        return 0;
3196}
3197
3198/**
3199 * mega_init_scb()
3200 * @adapter - pointer to our soft state
3201 *
3202 * Allocate memory for the various pointers in the scb structures:
3203 * scatter-gather list pointer, passthru and extended passthru structure
3204 * pointers.
3205 */
3206static int
3207mega_init_scb(adapter_t *adapter)
3208{
3209        scb_t   *scb;
3210        int     i;
3211
3212        for( i = 0; i < adapter->max_cmds; i++ ) {
3213
3214                scb = &adapter->scb_list[i];
3215
3216                scb->sgl64 = NULL;
3217                scb->sgl = NULL;
3218                scb->pthru = NULL;
3219                scb->epthru = NULL;
3220        }
3221
3222        for( i = 0; i < adapter->max_cmds; i++ ) {
3223
3224                scb = &adapter->scb_list[i];
3225
3226                scb->idx = i;
3227
3228                scb->sgl64 = pci_alloc_consistent(adapter->dev,
3229                                sizeof(mega_sgl64) * adapter->sglen,
3230                                &scb->sgl_dma_addr);
3231
3232                scb->sgl = (mega_sglist *)scb->sgl64;
3233
3234                if( !scb->sgl ) {
3235                        printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3236                        mega_free_sgl(adapter);
3237                        return -1;
3238                }
3239
3240                scb->pthru = pci_alloc_consistent(adapter->dev,
3241                                sizeof(mega_passthru),
3242                                &scb->pthru_dma_addr);
3243
3244                if( !scb->pthru ) {
3245                        printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3246                        mega_free_sgl(adapter);
3247                        return -1;
3248                }
3249
3250                scb->epthru = pci_alloc_consistent(adapter->dev,
3251                                sizeof(mega_ext_passthru),
3252                                &scb->epthru_dma_addr);
3253
3254                if( !scb->epthru ) {
3255                        printk(KERN_WARNING
3256                                "Can't allocate extended passthru.\n");
3257                        mega_free_sgl(adapter);
3258                        return -1;
3259                }
3260
3261
3262                scb->dma_type = MEGA_DMA_TYPE_NONE;
3263
3264                /*
3265                 * Link to free list
3266                 * lock not required since we are loading the driver, so no
3267                 * commands possible right now.
3268                 */
3269                scb->state = SCB_FREE;
3270                scb->cmd = NULL;
3271                list_add(&scb->list, &adapter->free_list);
3272        }
3273
3274        return 0;
3275}
3276
3277
3278/**
3279 * megadev_open()
3280 * @inode - unused
3281 * @filep - unused
3282 *
3283 * Routines for the character/ioctl interface to the driver. Find out if this
3284 * is a valid open. 
3285 */
3286static int
3287megadev_open (struct inode *inode, struct file *filep)
3288{
3289        /*
3290         * Only allow superuser to access private ioctl interface
3291         */
3292        if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3293
3294        return 0;
3295}
3296
3297
3298/**
3299 * megadev_ioctl()
3300 * @inode - Our device inode
3301 * @filep - unused
3302 * @cmd - ioctl command
3303 * @arg - user buffer
3304 *
3305 * ioctl entry point for our private ioctl interface. We move the data in from
3306 * the user space, prepare the command (if necessary, convert the old MIMD
3307 * ioctl to new ioctl command), and issue a synchronous command to the
3308 * controller.
3309 */
3310static int
3311megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3312{
3313        adapter_t       *adapter;
3314        nitioctl_t      uioc;
3315        int             adapno;
3316        int             rval;
3317        mega_passthru   __user *upthru; /* user address for passthru */
3318        mega_passthru   *pthru;         /* copy user passthru here */
3319        dma_addr_t      pthru_dma_hndl;
3320        void            *data = NULL;   /* data to be transferred */
3321        dma_addr_t      data_dma_hndl;  /* dma handle for data xfer area */
3322        megacmd_t       mc;
3323        megastat_t      __user *ustats;
3324        int             num_ldrv;
3325        u32             uxferaddr = 0;
3326        struct pci_dev  *pdev;
3327
3328        ustats = NULL; /* avoid compilation warnings */
3329        num_ldrv = 0;
3330
3331        /*
3332         * Make sure only USCSICMD are issued through this interface.
3333         * MIMD application would still fire different command.
3334         */
3335        if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3336                return -EINVAL;
3337        }
3338
3339        /*
3340         * Check and convert a possible MIMD command to NIT command.
3341         * mega_m_to_n() copies the data from the user space, so we do not
3342         * have to do it here.
3343         * NOTE: We will need some user address to copyout the data, therefore
3344         * the inteface layer will also provide us with the required user
3345         * addresses.
3346         */
3347        memset(&uioc, 0, sizeof(nitioctl_t));
3348        if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3349                return rval;
3350
3351
3352        switch( uioc.opcode ) {
3353
3354        case GET_DRIVER_VER:
3355                if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3356                        return (-EFAULT);
3357
3358                break;
3359
3360        case GET_N_ADAP:
3361                if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3362                        return (-EFAULT);
3363
3364                /*
3365                 * Shucks. MIMD interface returns a positive value for number
3366                 * of adapters. TODO: Change it to return 0 when there is no
3367                 * applicatio using mimd interface.
3368                 */
3369                return hba_count;
3370
3371        case GET_ADAP_INFO:
3372
3373                /*
3374                 * Which adapter
3375                 */
3376                if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3377                        return (-ENODEV);
3378
3379                if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3380                                sizeof(struct mcontroller)) )
3381                        return (-EFAULT);
3382                break;
3383
3384#if MEGA_HAVE_STATS
3385
3386        case GET_STATS:
3387                /*
3388                 * Which adapter
3389                 */
3390                if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3391                        return (-ENODEV);
3392
3393                adapter = hba_soft_state[adapno];
3394
3395                ustats = uioc.uioc_uaddr;
3396
3397                if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3398                        return (-EFAULT);
3399
3400                /*
3401                 * Check for the validity of the logical drive number
3402                 */
3403                if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3404
3405                if( copy_to_user(ustats->nreads, adapter->nreads,
3406                                        num_ldrv*sizeof(u32)) )
3407                        return -EFAULT;
3408
3409                if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3410                                        num_ldrv*sizeof(u32)) )
3411                        return -EFAULT;
3412
3413                if( copy_to_user(ustats->nwrites, adapter->nwrites,
3414                                        num_ldrv*sizeof(u32)) )
3415                        return -EFAULT;
3416
3417                if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3418                                        num_ldrv*sizeof(u32)) )
3419                        return -EFAULT;
3420
3421                if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3422                                        num_ldrv*sizeof(u32)) )
3423                        return -EFAULT;
3424
3425                if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3426                                        num_ldrv*sizeof(u32)) )
3427                        return -EFAULT;
3428
3429                return 0;
3430
3431#endif
3432        case MBOX_CMD:
3433
3434                /*
3435                 * Which adapter
3436                 */
3437                if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3438                        return (-ENODEV);
3439
3440                adapter = hba_soft_state[adapno];
3441
3442                /*
3443                 * Deletion of logical drive is a special case. The adapter
3444                 * should be quiescent before this command is issued.
3445                 */
3446                if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3447                                uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3448
3449                        /*
3450                         * Do we support this feature
3451                         */
3452                        if( !adapter->support_random_del ) {
3453                                printk(KERN_WARNING "megaraid: logdrv ");
3454                                printk("delete on non-supporting F/W.\n");
3455
3456                                return (-EINVAL);
3457                        }
3458
3459                        rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3460
3461                        if( rval == 0 ) {
3462                                memset(&mc, 0, sizeof(megacmd_t));
3463
3464                                mc.status = rval;
3465
3466                                rval = mega_n_to_m((void __user *)arg, &mc);
3467                        }
3468
3469                        return rval;
3470                }
3471                /*
3472                 * This interface only support the regular passthru commands.
3473                 * Reject extended passthru and 64-bit passthru
3474                 */
3475                if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3476                        uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3477
3478                        printk(KERN_WARNING "megaraid: rejected passthru.\n");
3479
3480                        return (-EINVAL);
3481                }
3482
3483                /*
3484                 * For all internal commands, the buffer must be allocated in
3485                 * <4GB address range
3486                 */
3487                if( make_local_pdev(adapter, &pdev) != 0 )
3488                        return -EIO;
3489
3490                /* Is it a passthru command or a DCMD */
3491                if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3492                        /* Passthru commands */
3493
3494                        pthru = pci_alloc_consistent(pdev,
3495                                        sizeof(mega_passthru),
3496                                        &pthru_dma_hndl);
3497
3498                        if( pthru == NULL ) {
3499                                free_local_pdev(pdev);
3500                                return (-ENOMEM);
3501                        }
3502
3503                        /*
3504                         * The user passthru structure
3505                         */
3506                        upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3507
3508                        /*
3509                         * Copy in the user passthru here.
3510                         */
3511                        if( copy_from_user(pthru, upthru,
3512                                                sizeof(mega_passthru)) ) {
3513
3514                                pci_free_consistent(pdev,
3515                                                sizeof(mega_passthru), pthru,
3516                                                pthru_dma_hndl);
3517
3518                                free_local_pdev(pdev);
3519
3520                                return (-EFAULT);
3521                        }
3522
3523                        /*
3524                         * Is there a data transfer
3525                         */
3526                        if( pthru->dataxferlen ) {
3527                                data = pci_alloc_consistent(pdev,
3528                                                pthru->dataxferlen,
3529                                                &data_dma_hndl);
3530
3531                                if( data == NULL ) {
3532                                        pci_free_consistent(pdev,
3533                                                        sizeof(mega_passthru),
3534                                                        pthru,
3535                                                        pthru_dma_hndl);
3536
3537                                        free_local_pdev(pdev);
3538
3539                                        return (-ENOMEM);
3540                                }
3541
3542                                /*
3543                                 * Save the user address and point the kernel
3544                                 * address at just allocated memory
3545                                 */
3546                                uxferaddr = pthru->dataxferaddr;
3547                                pthru->dataxferaddr = data_dma_hndl;
3548                        }
3549
3550
3551                        /*
3552                         * Is data coming down-stream
3553                         */
3554                        if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3555                                /*
3556                                 * Get the user data
3557                                 */
3558                                if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3559                                                        pthru->dataxferlen) ) {
3560                                        rval = (-EFAULT);
3561                                        goto freemem_and_return;
3562                                }
3563                        }
3564
3565                        memset(&mc, 0, sizeof(megacmd_t));
3566
3567                        mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3568                        mc.xferaddr = (u32)pthru_dma_hndl;
3569
3570                        /*
3571                         * Issue the command
3572                         */
3573                        mega_internal_command(adapter, &mc, pthru);
3574
3575                        rval = mega_n_to_m((void __user *)arg, &mc);
3576
3577                        if( rval ) goto freemem_and_return;
3578
3579
3580                        /*
3581                         * Is data going up-stream
3582                         */
3583                        if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3584                                if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3585                                                        pthru->dataxferlen) ) {
3586                                        rval = (-EFAULT);
3587                                }
3588                        }
3589
3590                        /*
3591                         * Send the request sense data also, irrespective of
3592                         * whether the user has asked for it or not.
3593                         */
3594                        if (copy_to_user(upthru->reqsensearea,
3595                                        pthru->reqsensearea, 14))
3596                                rval = -EFAULT;
3597
3598freemem_and_return:
3599                        if( pthru->dataxferlen ) {
3600                                pci_free_consistent(pdev,
3601                                                pthru->dataxferlen, data,
3602                                                data_dma_hndl);
3603                        }
3604
3605                        pci_free_consistent(pdev, sizeof(mega_passthru),
3606                                        pthru, pthru_dma_hndl);
3607
3608                        free_local_pdev(pdev);
3609
3610                        return rval;
3611                }
3612                else {
3613                        /* DCMD commands */
3614
3615                        /*
3616                         * Is there a data transfer
3617                         */
3618                        if( uioc.xferlen ) {
3619                                data = pci_alloc_consistent(pdev,
3620                                                uioc.xferlen, &data_dma_hndl);
3621
3622                                if( data == NULL ) {
3623                                        free_local_pdev(pdev);
3624                                        return (-ENOMEM);
3625                                }
3626
3627                                uxferaddr = MBOX(uioc)->xferaddr;
3628                        }
3629
3630                        /*
3631                         * Is data coming down-stream
3632                         */
3633                        if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3634                                /*
3635                                 * Get the user data
3636                                 */
3637                                if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3638                                                        uioc.xferlen) ) {
3639
3640                                        pci_free_consistent(pdev,
3641                                                        uioc.xferlen,
3642                                                        data, data_dma_hndl);
3643
3644                                        free_local_pdev(pdev);
3645
3646                                        return (-EFAULT);
3647                                }
3648                        }
3649
3650                        memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3651
3652                        mc.xferaddr = (u32)data_dma_hndl;
3653
3654                        /*
3655                         * Issue the command
3656                         */
3657                        mega_internal_command(adapter, &mc, NULL);
3658
3659                        rval = mega_n_to_m((void __user *)arg, &mc);
3660
3661                        if( rval ) {
3662                                if( uioc.xferlen ) {
3663                                        pci_free_consistent(pdev,
3664                                                        uioc.xferlen, data,
3665                                                        data_dma_hndl);
3666                                }
3667
3668                                free_local_pdev(pdev);
3669
3670                                return rval;
3671                        }
3672
3673                        /*
3674                         * Is data going up-stream
3675                         */
3676                        if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3677                                if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3678                                                        uioc.xferlen) ) {
3679
3680                                        rval = (-EFAULT);
3681                                }
3682                        }
3683
3684                        if( uioc.xferlen ) {
3685                                pci_free_consistent(pdev,
3686                                                uioc.xferlen, data,
3687                                                data_dma_hndl);
3688                        }
3689
3690                        free_local_pdev(pdev);
3691
3692                        return rval;
3693                }
3694
3695        default:
3696                return (-EINVAL);
3697        }
3698
3699        return 0;
3700}
3701
3702static long
3703megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3704{
3705        int ret;
3706
3707        mutex_lock(&megadev_mutex);
3708        ret = megadev_ioctl(filep, cmd, arg);
3709        mutex_unlock(&megadev_mutex);
3710
3711        return ret;
3712}
3713
3714/**
3715 * mega_m_to_n()
3716 * @arg - user address
3717 * @uioc - new ioctl structure
3718 *
3719 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3720 * structure
3721 *
3722 * Converts the older mimd ioctl structure to newer NIT structure
3723 */
3724static int
3725mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3726{
3727        struct uioctl_t uioc_mimd;
3728        char    signature[8] = {0};
3729        u8      opcode;
3730        u8      subopcode;
3731
3732
3733        /*
3734         * check is the application conforms to NIT. We do not have to do much
3735         * in that case.
3736         * We exploit the fact that the signature is stored in the very
3737         * beginning of the structure.
3738         */
3739
3740        if( copy_from_user(signature, arg, 7) )
3741                return (-EFAULT);
3742
3743        if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3744
3745                /*
3746                 * NOTE NOTE: The nit ioctl is still under flux because of
3747                 * change of mailbox definition, in HPE. No applications yet
3748                 * use this interface and let's not have applications use this
3749                 * interface till the new specifitions are in place.
3750                 */
3751                return -EINVAL;
3752#if 0
3753                if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3754                        return (-EFAULT);
3755                return 0;
3756#endif
3757        }
3758
3759        /*
3760         * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3761         *
3762         * Get the user ioctl structure
3763         */
3764        if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3765                return (-EFAULT);
3766
3767
3768        /*
3769         * Get the opcode and subopcode for the commands
3770         */
3771        opcode = uioc_mimd.ui.fcs.opcode;
3772        subopcode = uioc_mimd.ui.fcs.subopcode;
3773
3774        switch (opcode) {
3775        case 0x82:
3776
3777                switch (subopcode) {
3778
3779                case MEGAIOC_QDRVRVER:  /* Query driver version */
3780                        uioc->opcode = GET_DRIVER_VER;
3781                        uioc->uioc_uaddr = uioc_mimd.data;
3782                        break;
3783
3784                case MEGAIOC_QNADAP:    /* Get # of adapters */
3785                        uioc->opcode = GET_N_ADAP;
3786                        uioc->uioc_uaddr = uioc_mimd.data;
3787                        break;
3788
3789                case MEGAIOC_QADAPINFO: /* Get adapter information */
3790                        uioc->opcode = GET_ADAP_INFO;
3791                        uioc->adapno = uioc_mimd.ui.fcs.adapno;
3792                        uioc->uioc_uaddr = uioc_mimd.data;
3793                        break;
3794
3795                default:
3796                        return(-EINVAL);
3797                }
3798
3799                break;
3800
3801
3802        case 0x81:
3803
3804                uioc->opcode = MBOX_CMD;
3805                uioc->adapno = uioc_mimd.ui.fcs.adapno;
3806
3807                memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3808
3809                uioc->xferlen = uioc_mimd.ui.fcs.length;
3810
3811                if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3812                if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3813
3814                break;
3815
3816        case 0x80:
3817
3818                uioc->opcode = MBOX_CMD;
3819                uioc->adapno = uioc_mimd.ui.fcs.adapno;
3820
3821                memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3822
3823                /*
3824                 * Choose the xferlen bigger of input and output data
3825                 */
3826                uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3827                        uioc_mimd.outlen : uioc_mimd.inlen;
3828
3829                if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3830                if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3831
3832                break;
3833
3834        default:
3835                return (-EINVAL);
3836
3837        }
3838
3839        return 0;
3840}
3841
3842/*
3843 * mega_n_to_m()
3844 * @arg - user address
3845 * @mc - mailbox command
3846 *
3847 * Updates the status information to the application, depending on application
3848 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3849 */
3850static int
3851mega_n_to_m(void __user *arg, megacmd_t *mc)
3852{
3853        nitioctl_t      __user *uiocp;
3854        megacmd_t       __user *umc;
3855        mega_passthru   __user *upthru;
3856        struct uioctl_t __user *uioc_mimd;
3857        char    signature[8] = {0};
3858
3859        /*
3860         * check is the application conforms to NIT.
3861         */
3862        if( copy_from_user(signature, arg, 7) )
3863                return -EFAULT;
3864
3865        if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3866
3867                uiocp = arg;
3868
3869                if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3870                        return (-EFAULT);
3871
3872                if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3873
3874                        umc = MBOX_P(uiocp);
3875
3876                        if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3877                                return -EFAULT;
3878
3879                        if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3880                                return (-EFAULT);
3881                }
3882        }
3883        else {
3884                uioc_mimd = arg;
3885
3886                if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3887                        return (-EFAULT);
3888
3889                if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3890
3891                        umc = (megacmd_t __user *)uioc_mimd->mbox;
3892
3893                        if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3894                                return (-EFAULT);
3895
3896                        if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3897                                return (-EFAULT);
3898                }
3899        }
3900
3901        return 0;
3902}
3903
3904
3905/*
3906 * MEGARAID 'FW' commands.
3907 */
3908
3909/**
3910 * mega_is_bios_enabled()
3911 * @adapter - pointer to our soft state
3912 *
3913 * issue command to find out if the BIOS is enabled for this controller
3914 */
3915static int
3916mega_is_bios_enabled(adapter_t *adapter)
3917{
3918        unsigned char   raw_mbox[sizeof(struct mbox_out)];
3919        mbox_t  *mbox;
3920        int     ret;
3921
3922        mbox = (mbox_t *)raw_mbox;
3923
3924        memset(&mbox->m_out, 0, sizeof(raw_mbox));
3925
3926        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3927
3928        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3929
3930        raw_mbox[0] = IS_BIOS_ENABLED;
3931        raw_mbox[2] = GET_BIOS;
3932
3933
3934        ret = issue_scb_block(adapter, raw_mbox);
3935
3936        return *(char *)adapter->mega_buffer;
3937}
3938
3939
3940/**
3941 * mega_enum_raid_scsi()
3942 * @adapter - pointer to our soft state
3943 *
3944 * Find out what channels are RAID/SCSI. This information is used to
3945 * differentiate the virtual channels and physical channels and to support
3946 * ROMB feature and non-disk devices.
3947 */
3948static void
3949mega_enum_raid_scsi(adapter_t *adapter)
3950{
3951        unsigned char raw_mbox[sizeof(struct mbox_out)];
3952        mbox_t *mbox;
3953        int i;
3954
3955        mbox = (mbox_t *)raw_mbox;
3956
3957        memset(&mbox->m_out, 0, sizeof(raw_mbox));
3958
3959        /*
3960         * issue command to find out what channels are raid/scsi
3961         */
3962        raw_mbox[0] = CHNL_CLASS;
3963        raw_mbox[2] = GET_CHNL_CLASS;
3964
3965        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3966
3967        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3968
3969        /*
3970         * Non-ROMB firmware fail this command, so all channels
3971         * must be shown RAID
3972         */
3973        adapter->mega_ch_class = 0xFF;
3974
3975        if(!issue_scb_block(adapter, raw_mbox)) {
3976                adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3977
3978        }
3979
3980        for( i = 0; i < adapter->product_info.nchannels; i++ ) { 
3981                if( (adapter->mega_ch_class >> i) & 0x01 ) {
3982                        printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3983                                        i);
3984                }
3985                else {
3986                        printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3987                                        i);
3988                }
3989        }
3990
3991        return;
3992}
3993
3994
3995/**
3996 * mega_get_boot_drv()
3997 * @adapter - pointer to our soft state
3998 *
3999 * Find out which device is the boot device. Note, any logical drive or any
4000 * phyical device (e.g., a CDROM) can be designated as a boot device.
4001 */
4002static void
4003mega_get_boot_drv(adapter_t *adapter)
4004{
4005        struct private_bios_data        *prv_bios_data;
4006        unsigned char   raw_mbox[sizeof(struct mbox_out)];
4007        mbox_t  *mbox;
4008        u16     cksum = 0;
4009        u8      *cksum_p;
4010        u8      boot_pdrv;
4011        int     i;
4012
4013        mbox = (mbox_t *)raw_mbox;
4014
4015        memset(&mbox->m_out, 0, sizeof(raw_mbox));
4016
4017        raw_mbox[0] = BIOS_PVT_DATA;
4018        raw_mbox[2] = GET_BIOS_PVT_DATA;
4019
4020        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4021
4022        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4023
4024        adapter->boot_ldrv_enabled = 0;
4025        adapter->boot_ldrv = 0;
4026
4027        adapter->boot_pdrv_enabled = 0;
4028        adapter->boot_pdrv_ch = 0;
4029        adapter->boot_pdrv_tgt = 0;
4030
4031        if(issue_scb_block(adapter, raw_mbox) == 0) {
4032                prv_bios_data =
4033                        (struct private_bios_data *)adapter->mega_buffer;
4034
4035                cksum = 0;
4036                cksum_p = (char *)prv_bios_data;
4037                for (i = 0; i < 14; i++ ) {
4038                        cksum += (u16)(*cksum_p++);
4039                }
4040
4041                if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4042
4043                        /*
4044                         * If MSB is set, a physical drive is set as boot
4045                         * device
4046                         */
4047                        if( prv_bios_data->boot_drv & 0x80 ) {
4048                                adapter->boot_pdrv_enabled = 1;
4049                                boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4050                                adapter->boot_pdrv_ch = boot_pdrv / 16;
4051                                adapter->boot_pdrv_tgt = boot_pdrv % 16;
4052                        }
4053                        else {
4054                                adapter->boot_ldrv_enabled = 1;
4055                                adapter->boot_ldrv = prv_bios_data->boot_drv;
4056                        }
4057                }
4058        }
4059
4060}
4061
4062/**
4063 * mega_support_random_del()
4064 * @adapter - pointer to our soft state
4065 *
4066 * Find out if this controller supports random deletion and addition of
4067 * logical drives
4068 */
4069static int
4070mega_support_random_del(adapter_t *adapter)
4071{
4072        unsigned char raw_mbox[sizeof(struct mbox_out)];
4073        mbox_t *mbox;
4074        int rval;
4075
4076        mbox = (mbox_t *)raw_mbox;
4077
4078        memset(&mbox->m_out, 0, sizeof(raw_mbox));
4079
4080        /*
4081         * issue command
4082         */
4083        raw_mbox[0] = FC_DEL_LOGDRV;
4084        raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4085
4086        rval = issue_scb_block(adapter, raw_mbox);
4087
4088        return !rval;
4089}
4090
4091
4092/**
4093 * mega_support_ext_cdb()
4094 * @adapter - pointer to our soft state
4095 *
4096 * Find out if this firmware support cdblen > 10
4097 */
4098static int
4099mega_support_ext_cdb(adapter_t *adapter)
4100{
4101        unsigned char raw_mbox[sizeof(struct mbox_out)];
4102        mbox_t *mbox;
4103        int rval;
4104
4105        mbox = (mbox_t *)raw_mbox;
4106
4107        memset(&mbox->m_out, 0, sizeof(raw_mbox));
4108        /*
4109         * issue command to find out if controller supports extended CDBs.
4110         */
4111        raw_mbox[0] = 0xA4;
4112        raw_mbox[2] = 0x16;
4113
4114        rval = issue_scb_block(adapter, raw_mbox);
4115
4116        return !rval;
4117}
4118
4119
4120/**
4121 * mega_del_logdrv()
4122 * @adapter - pointer to our soft state
4123 * @logdrv - logical drive to be deleted
4124 *
4125 * Delete the specified logical drive. It is the responsibility of the user
4126 * app to let the OS know about this operation.
4127 */
4128static int
4129mega_del_logdrv(adapter_t *adapter, int logdrv)
4130{
4131        unsigned long flags;
4132        scb_t *scb;
4133        int rval;
4134
4135        /*
4136         * Stop sending commands to the controller, queue them internally.
4137         * When deletion is complete, ISR will flush the queue.
4138         */
4139        atomic_set(&adapter->quiescent, 1);
4140
4141        /*
4142         * Wait till all the issued commands are complete and there are no
4143         * commands in the pending queue
4144         */
4145        while (atomic_read(&adapter->pend_cmds) > 0 ||
4146               !list_empty(&adapter->pending_list))
4147                msleep(1000);   /* sleep for 1s */
4148
4149        rval = mega_do_del_logdrv(adapter, logdrv);
4150
4151        spin_lock_irqsave(&adapter->lock, flags);
4152
4153        /*
4154         * If delete operation was successful, add 0x80 to the logical drive
4155         * ids for commands in the pending queue.
4156         */
4157        if (adapter->read_ldidmap) {
4158                struct list_head *pos;
4159                list_for_each(pos, &adapter->pending_list) {
4160                        scb = list_entry(pos, scb_t, list);
4161                        if (scb->pthru->logdrv < 0x80 )
4162                                scb->pthru->logdrv += 0x80;
4163                }
4164        }
4165
4166        atomic_set(&adapter->quiescent, 0);
4167
4168        mega_runpendq(adapter);
4169
4170        spin_unlock_irqrestore(&adapter->lock, flags);
4171
4172        return rval;
4173}
4174
4175
4176static int
4177mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4178{
4179        megacmd_t       mc;
4180        int     rval;
4181
4182        memset( &mc, 0, sizeof(megacmd_t));
4183
4184        mc.cmd = FC_DEL_LOGDRV;
4185        mc.opcode = OP_DEL_LOGDRV;
4186        mc.subopcode = logdrv;
4187
4188        rval = mega_internal_command(adapter, &mc, NULL);
4189
4190        /* log this event */
4191        if(rval) {
4192                printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4193                return rval;
4194        }
4195
4196        /*
4197         * After deleting first logical drive, the logical drives must be
4198         * addressed by adding 0x80 to the logical drive id.
4199         */
4200        adapter->read_ldidmap = 1;
4201
4202        return rval;
4203}
4204
4205
4206/**
4207 * mega_get_max_sgl()
4208 * @adapter - pointer to our soft state
4209 *
4210 * Find out the maximum number of scatter-gather elements supported by this
4211 * version of the firmware
4212 */
4213static void
4214mega_get_max_sgl(adapter_t *adapter)
4215{
4216        unsigned char   raw_mbox[sizeof(struct mbox_out)];
4217        mbox_t  *mbox;
4218
4219        mbox = (mbox_t *)raw_mbox;
4220
4221        memset(mbox, 0, sizeof(raw_mbox));
4222
4223        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4224
4225        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4226
4227        raw_mbox[0] = MAIN_MISC_OPCODE;
4228        raw_mbox[2] = GET_MAX_SG_SUPPORT;
4229
4230
4231        if( issue_scb_block(adapter, raw_mbox) ) {
4232                /*
4233                 * f/w does not support this command. Choose the default value
4234                 */
4235                adapter->sglen = MIN_SGLIST;
4236        }
4237        else {
4238                adapter->sglen = *((char *)adapter->mega_buffer);
4239                
4240                /*
4241                 * Make sure this is not more than the resources we are
4242                 * planning to allocate
4243                 */
4244                if ( adapter->sglen > MAX_SGLIST )
4245                        adapter->sglen = MAX_SGLIST;
4246        }
4247
4248        return;
4249}
4250
4251
4252/**
4253 * mega_support_cluster()
4254 * @adapter - pointer to our soft state
4255 *
4256 * Find out if this firmware support cluster calls.
4257 */
4258static int
4259mega_support_cluster(adapter_t *adapter)
4260{
4261        unsigned char   raw_mbox[sizeof(struct mbox_out)];
4262        mbox_t  *mbox;
4263
4264        mbox = (mbox_t *)raw_mbox;
4265
4266        memset(mbox, 0, sizeof(raw_mbox));
4267
4268        memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4269
4270        mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4271
4272        /*
4273         * Try to get the initiator id. This command will succeed iff the
4274         * clustering is available on this HBA.
4275         */
4276        raw_mbox[0] = MEGA_GET_TARGET_ID;
4277
4278        if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4279
4280                /*
4281                 * Cluster support available. Get the initiator target id.
4282                 * Tell our id to mid-layer too.
4283                 */
4284                adapter->this_id = *(u32 *)adapter->mega_buffer;
4285                adapter->host->this_id = adapter->this_id;
4286
4287                return 1;
4288        }
4289
4290        return 0;
4291}
4292
4293#ifdef CONFIG_PROC_FS
4294/**
4295 * mega_adapinq()
4296 * @adapter - pointer to our soft state
4297 * @dma_handle - DMA address of the buffer
4298 *
4299 * Issue internal commands while interrupts are available.
4300 * We only issue direct mailbox commands from within the driver. ioctl()
4301 * interface using these routines can issue passthru commands.
4302 */
4303static int
4304mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4305{
4306        megacmd_t       mc;
4307
4308        memset(&mc, 0, sizeof(megacmd_t));
4309
4310        if( adapter->flag & BOARD_40LD ) {
4311                mc.cmd = FC_NEW_CONFIG;
4312                mc.opcode = NC_SUBOP_ENQUIRY3;
4313                mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4314        }
4315        else {
4316                mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4317        }
4318
4319        mc.xferaddr = (u32)dma_handle;
4320
4321        if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4322                return -1;
4323        }
4324
4325        return 0;
4326}
4327
4328
4329/** mega_internal_dev_inquiry()
4330 * @adapter - pointer to our soft state
4331 * @ch - channel for this device
4332 * @tgt - ID of this device
4333 * @buf_dma_handle - DMA address of the buffer
4334 *
4335 * Issue the scsi inquiry for the specified device.
4336 */
4337static int
4338mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4339                dma_addr_t buf_dma_handle)
4340{
4341        mega_passthru   *pthru;
4342        dma_addr_t      pthru_dma_handle;
4343        megacmd_t       mc;
4344        int             rval;
4345        struct pci_dev  *pdev;
4346
4347
4348        /*
4349         * For all internal commands, the buffer must be allocated in <4GB
4350         * address range
4351         */
4352        if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4353
4354        pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4355                        &pthru_dma_handle);
4356
4357        if( pthru == NULL ) {
4358                free_local_pdev(pdev);
4359                return -1;
4360        }
4361
4362        pthru->timeout = 2;
4363        pthru->ars = 1;
4364        pthru->reqsenselen = 14;
4365        pthru->islogical = 0;
4366
4367        pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4368
4369        pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4370
4371        pthru->cdblen = 6;
4372
4373        pthru->cdb[0] = INQUIRY;
4374        pthru->cdb[1] = 0;
4375        pthru->cdb[2] = 0;
4376        pthru->cdb[3] = 0;
4377        pthru->cdb[4] = 255;
4378        pthru->cdb[5] = 0;
4379
4380
4381        pthru->dataxferaddr = (u32)buf_dma_handle;
4382        pthru->dataxferlen = 256;
4383
4384        memset(&mc, 0, sizeof(megacmd_t));
4385
4386        mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4387        mc.xferaddr = (u32)pthru_dma_handle;
4388
4389        rval = mega_internal_command(adapter, &mc, pthru);
4390
4391        pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4392                        pthru_dma_handle);
4393
4394        free_local_pdev(pdev);
4395
4396        return rval;
4397}
4398#endif
4399
4400/**
4401 * mega_internal_command()
4402 * @adapter - pointer to our soft state
4403 * @mc - the mailbox command
4404 * @pthru - Passthru structure for DCDB commands
4405 *
4406 * Issue the internal commands in interrupt mode.
4407 * The last argument is the address of the passthru structure if the command
4408 * to be fired is a passthru command
4409 *
4410 * lockscope specifies whether the caller has already acquired the lock. Of
4411 * course, the caller must know which lock we are talking about.
4412 *
4413 * Note: parameter 'pthru' is null for non-passthru commands.
4414 */
4415static int
4416mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4417{
4418        Scsi_Cmnd       *scmd;
4419        struct  scsi_device *sdev;
4420        scb_t   *scb;
4421        int     rval;
4422
4423        scmd = scsi_allocate_command(GFP_KERNEL);
4424        if (!scmd)
4425                return -ENOMEM;
4426
4427        /*
4428         * The internal commands share one command id and hence are
4429         * serialized. This is so because we want to reserve maximum number of
4430         * available command ids for the I/O commands.
4431         */
4432        mutex_lock(&adapter->int_mtx);
4433
4434        scb = &adapter->int_scb;
4435        memset(scb, 0, sizeof(scb_t));
4436
4437        sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
4438        scmd->device = sdev;
4439
4440        memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
4441        scmd->cmnd = adapter->int_cdb;
4442        scmd->device->host = adapter->host;
4443        scmd->host_scribble = (void *)scb;
4444        scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4445
4446        scb->state |= SCB_ACTIVE;
4447        scb->cmd = scmd;
4448
4449        memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4450
4451        /*
4452         * Is it a passthru command
4453         */
4454        if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4455
4456                scb->pthru = pthru;
4457        }
4458
4459        scb->idx = CMDID_INT_CMDS;
4460
4461        megaraid_queue_lck(scmd, mega_internal_done);
4462
4463        wait_for_completion(&adapter->int_waitq);
4464
4465        rval = scmd->result;
4466        mc->status = scmd->result;
4467        kfree(sdev);
4468
4469        /*
4470         * Print a debug message for all failed commands. Applications can use
4471         * this information.
4472         */
4473        if( scmd->result && trace_level ) {
4474                printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4475                        mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4476        }
4477
4478        mutex_unlock(&adapter->int_mtx);
4479
4480        scsi_free_command(GFP_KERNEL, scmd);
4481
4482        return rval;
4483}
4484
4485
4486/**
4487 * mega_internal_done()
4488 * @scmd - internal scsi command
4489 *
4490 * Callback routine for internal commands.
4491 */
4492static void
4493mega_internal_done(Scsi_Cmnd *scmd)
4494{
4495        adapter_t       *adapter;
4496
4497        adapter = (adapter_t *)scmd->device->host->hostdata;
4498
4499        complete(&adapter->int_waitq);
4500
4501}
4502
4503
4504static struct scsi_host_template megaraid_template = {
4505        .module                         = THIS_MODULE,
4506        .name                           = "MegaRAID",
4507        .proc_name                      = "megaraid_legacy",
4508        .info                           = megaraid_info,
4509        .queuecommand                   = megaraid_queue,       
4510        .bios_param                     = megaraid_biosparam,
4511        .max_sectors                    = MAX_SECTORS_PER_IO,
4512        .can_queue                      = MAX_COMMANDS,
4513        .this_id                        = DEFAULT_INITIATOR_ID,
4514        .sg_tablesize                   = MAX_SGLIST,
4515        .cmd_per_lun                    = DEF_CMD_PER_LUN,
4516        .use_clustering                 = ENABLE_CLUSTERING,
4517        .eh_abort_handler               = megaraid_abort,
4518        .eh_device_reset_handler        = megaraid_reset,
4519        .eh_bus_reset_handler           = megaraid_reset,
4520        .eh_host_reset_handler          = megaraid_reset,
4521};
4522
4523static int __devinit
4524megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4525{
4526        struct Scsi_Host *host;
4527        adapter_t *adapter;
4528        unsigned long mega_baseport, tbase, flag = 0;
4529        u16 subsysid, subsysvid;
4530        u8 pci_bus, pci_dev_func;
4531        int irq, i, j;
4532        int error = -ENODEV;
4533
4534        if (pci_enable_device(pdev))
4535                goto out;
4536        pci_set_master(pdev);
4537
4538        pci_bus = pdev->bus->number;
4539        pci_dev_func = pdev->devfn;
4540
4541        /*
4542         * The megaraid3 stuff reports the ID of the Intel part which is not
4543         * remotely specific to the megaraid
4544         */
4545        if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4546                u16 magic;
4547                /*
4548                 * Don't fall over the Compaq management cards using the same
4549                 * PCI identifier
4550                 */
4551                if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4552                    pdev->subsystem_device == 0xC000)
4553                        return -ENODEV;
4554                /* Now check the magic signature byte */
4555                pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4556                if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4557                        return -ENODEV;
4558                /* Ok it is probably a megaraid */
4559        }
4560
4561        /*
4562         * For these vendor and device ids, signature offsets are not
4563         * valid and 64 bit is implicit
4564         */
4565        if (id->driver_data & BOARD_64BIT)
4566                flag |= BOARD_64BIT;
4567        else {
4568                u32 magic64;
4569
4570                pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4571                if (magic64 == HBA_SIGNATURE_64BIT)
4572                        flag |= BOARD_64BIT;
4573        }
4574
4575        subsysvid = pdev->subsystem_vendor;
4576        subsysid = pdev->subsystem_device;
4577
4578        printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4579                id->vendor, id->device, pci_bus);
4580
4581        printk("slot %d:func %d\n",
4582                PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4583
4584        /* Read the base port and IRQ from PCI */
4585        mega_baseport = pci_resource_start(pdev, 0);
4586        irq = pdev->irq;
4587
4588        tbase = mega_baseport;
4589        if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4590                flag |= BOARD_MEMMAP;
4591
4592                if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4593                        printk(KERN_WARNING "megaraid: mem region busy!\n");
4594                        goto out_disable_device;
4595                }
4596
4597                mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4598                if (!mega_baseport) {
4599                        printk(KERN_WARNING
4600                               "megaraid: could not map hba memory\n");
4601                        goto out_release_region;
4602                }
4603        } else {
4604                flag |= BOARD_IOMAP;
4605                mega_baseport += 0x10;
4606
4607                if (!request_region(mega_baseport, 16, "megaraid"))
4608                        goto out_disable_device;
4609        }
4610
4611        /* Initialize SCSI Host structure */
4612        host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4613        if (!host)
4614                goto out_iounmap;
4615
4616        adapter = (adapter_t *)host->hostdata;
4617        memset(adapter, 0, sizeof(adapter_t));
4618
4619        printk(KERN_NOTICE
4620                "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4621                host->host_no, mega_baseport, irq);
4622
4623        adapter->base = mega_baseport;
4624        if (flag & BOARD_MEMMAP)
4625                adapter->mmio_base = (void __iomem *) mega_baseport;
4626
4627        INIT_LIST_HEAD(&adapter->free_list);
4628        INIT_LIST_HEAD(&adapter->pending_list);
4629        INIT_LIST_HEAD(&adapter->completed_list);
4630
4631        adapter->flag = flag;
4632        spin_lock_init(&adapter->lock);
4633
4634        host->cmd_per_lun = max_cmd_per_lun;
4635        host->max_sectors = max_sectors_per_io;
4636
4637        adapter->dev = pdev;
4638        adapter->host = host;
4639
4640        adapter->host->irq = irq;
4641
4642        if (flag & BOARD_MEMMAP)
4643                adapter->host->base = tbase;
4644        else {
4645                adapter->host->io_port = tbase;
4646                adapter->host->n_io_port = 16;
4647        }
4648
4649        adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4650
4651        /*
4652         * Allocate buffer to issue internal commands.
4653         */
4654        adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4655                MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4656        if (!adapter->mega_buffer) {
4657                printk(KERN_WARNING "megaraid: out of RAM.\n");
4658                goto out_host_put;
4659        }
4660
4661        adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4662        if (!adapter->scb_list) {
4663                printk(KERN_WARNING "megaraid: out of RAM.\n");
4664                goto out_free_cmd_buffer;
4665        }
4666
4667        if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4668                                megaraid_isr_memmapped : megaraid_isr_iomapped,
4669                                        IRQF_SHARED, "megaraid", adapter)) {
4670                printk(KERN_WARNING
4671                        "megaraid: Couldn't register IRQ %d!\n", irq);
4672                goto out_free_scb_list;
4673        }
4674
4675        if (mega_setup_mailbox(adapter))
4676                goto out_free_irq;
4677
4678        if (mega_query_adapter(adapter))
4679                goto out_free_mbox;
4680
4681        /*
4682         * Have checks for some buggy f/w
4683         */
4684        if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4685                /*
4686                 * Which firmware
4687                 */
4688                if (!strcmp(adapter->fw_version, "3.00") ||
4689                                !strcmp(adapter->fw_version, "3.01")) {
4690
4691                        printk( KERN_WARNING
4692                                "megaraid: Your  card is a Dell PERC "
4693                                "2/SC RAID controller with  "
4694                                "firmware\nmegaraid: 3.00 or 3.01.  "
4695                                "This driver is known to have "
4696                                "corruption issues\nmegaraid: with "
4697                                "those firmware versions on this "
4698                                "specific card.  In order\nmegaraid: "
4699                                "to protect your data, please upgrade "
4700                                "your firmware to version\nmegaraid: "
4701                                "3.10 or later, available from the "
4702                                "Dell Technical Support web\n"
4703                                "megaraid: site at\nhttp://support."
4704                                "dell.com/us/en/filelib/download/"
4705                                "index.asp?fileid=2940\n"
4706                        );
4707                }
4708        }
4709
4710        /*
4711         * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4712         * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4713         * support, since this firmware cannot handle 64 bit
4714         * addressing
4715         */
4716        if ((subsysvid == HP_SUBSYS_VID) &&
4717            ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4718                /*
4719                 * which firmware
4720                 */
4721                if (!strcmp(adapter->fw_version, "H01.07") ||
4722                    !strcmp(adapter->fw_version, "H01.08") ||
4723                    !strcmp(adapter->fw_version, "H01.09") ) {
4724                        printk(KERN_WARNING
4725                                "megaraid: Firmware H.01.07, "
4726                                "H.01.08, and H.01.09 on 1M/2M "
4727                                "controllers\n"
4728                                "megaraid: do not support 64 bit "
4729                                "addressing.\nmegaraid: DISABLING "
4730                                "64 bit support.\n");
4731                        adapter->flag &= ~BOARD_64BIT;
4732                }
4733        }
4734
4735        if (mega_is_bios_enabled(adapter))
4736                mega_hbas[hba_count].is_bios_enabled = 1;
4737        mega_hbas[hba_count].hostdata_addr = adapter;
4738
4739        /*
4740         * Find out which channel is raid and which is scsi. This is
4741         * for ROMB support.
4742         */
4743        mega_enum_raid_scsi(adapter);
4744
4745        /*
4746         * Find out if a logical drive is set as the boot drive. If
4747         * there is one, will make that as the first logical drive.
4748         * ROMB: Do we have to boot from a physical drive. Then all
4749         * the physical drives would appear before the logical disks.
4750         * Else, all the physical drives would be exported to the mid
4751         * layer after logical drives.
4752         */
4753        mega_get_boot_drv(adapter);
4754
4755        if (adapter->boot_pdrv_enabled) {
4756                j = adapter->product_info.nchannels;
4757                for( i = 0; i < j; i++ )
4758                        adapter->logdrv_chan[i] = 0;
4759                for( i = j; i < NVIRT_CHAN + j; i++ )
4760                        adapter->logdrv_chan[i] = 1;
4761        } else {
4762                for (i = 0; i < NVIRT_CHAN; i++)
4763                        adapter->logdrv_chan[i] = 1;
4764                for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4765                        adapter->logdrv_chan[i] = 0;
4766                adapter->mega_ch_class <<= NVIRT_CHAN;
4767        }
4768
4769        /*
4770         * Do we support random deletion and addition of logical
4771         * drives
4772         */
4773        adapter->read_ldidmap = 0;      /* set it after first logdrv
4774                                                   delete cmd */
4775        adapter->support_random_del = mega_support_random_del(adapter);
4776
4777        /* Initialize SCBs */
4778        if (mega_init_scb(adapter))
4779                goto out_free_mbox;
4780
4781        /*
4782         * Reset the pending commands counter
4783         */
4784        atomic_set(&adapter->pend_cmds, 0);
4785
4786        /*
4787         * Reset the adapter quiescent flag
4788         */
4789        atomic_set(&adapter->quiescent, 0);
4790
4791        hba_soft_state[hba_count] = adapter;
4792
4793        /*
4794         * Fill in the structure which needs to be passed back to the
4795         * application when it does an ioctl() for controller related
4796         * information.
4797         */
4798        i = hba_count;
4799
4800        mcontroller[i].base = mega_baseport;
4801        mcontroller[i].irq = irq;
4802        mcontroller[i].numldrv = adapter->numldrv;
4803        mcontroller[i].pcibus = pci_bus;
4804        mcontroller[i].pcidev = id->device;
4805        mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4806        mcontroller[i].pciid = -1;
4807        mcontroller[i].pcivendor = id->vendor;
4808        mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4809        mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4810
4811
4812        /* Set the Mode of addressing to 64 bit if we can */
4813        if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4814                pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4815                adapter->has_64bit_addr = 1;
4816        } else  {
4817                pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4818                adapter->has_64bit_addr = 0;
4819        }
4820                
4821        mutex_init(&adapter->int_mtx);
4822        init_completion(&adapter->int_waitq);
4823
4824        adapter->this_id = DEFAULT_INITIATOR_ID;
4825        adapter->host->this_id = DEFAULT_INITIATOR_ID;
4826
4827#if MEGA_HAVE_CLUSTERING
4828        /*
4829         * Is cluster support enabled on this controller
4830         * Note: In a cluster the HBAs ( the initiators ) will have
4831         * different target IDs and we cannot assume it to be 7. Call
4832         * to mega_support_cluster() will get the target ids also if
4833         * the cluster support is available
4834         */
4835        adapter->has_cluster = mega_support_cluster(adapter);
4836        if (adapter->has_cluster) {
4837                printk(KERN_NOTICE
4838                        "megaraid: Cluster driver, initiator id:%d\n",
4839                        adapter->this_id);
4840        }
4841#endif
4842
4843        pci_set_drvdata(pdev, host);
4844
4845        mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4846
4847        error = scsi_add_host(host, &pdev->dev);
4848        if (error)
4849                goto out_free_mbox;
4850
4851        scsi_scan_host(host);
4852        hba_count++;
4853        return 0;
4854
4855 out_free_mbox:
4856        pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4857                        adapter->una_mbox64, adapter->una_mbox64_dma);
4858 out_free_irq:
4859        free_irq(adapter->host->irq, adapter);
4860 out_free_scb_list:
4861        kfree(adapter->scb_list);
4862 out_free_cmd_buffer:
4863        pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4864                        adapter->mega_buffer, adapter->buf_dma_handle);
4865 out_host_put:
4866        scsi_host_put(host);
4867 out_iounmap:
4868        if (flag & BOARD_MEMMAP)
4869                iounmap((void *)mega_baseport);
4870 out_release_region:
4871        if (flag & BOARD_MEMMAP)
4872                release_mem_region(tbase, 128);
4873        else
4874                release_region(mega_baseport, 16);
4875 out_disable_device:
4876        pci_disable_device(pdev);
4877 out:
4878        return error;
4879}
4880
4881static void
4882__megaraid_shutdown(adapter_t *adapter)
4883{
4884        u_char  raw_mbox[sizeof(struct mbox_out)];
4885        mbox_t  *mbox = (mbox_t *)raw_mbox;
4886        int     i;
4887
4888        /* Flush adapter cache */
4889        memset(&mbox->m_out, 0, sizeof(raw_mbox));
4890        raw_mbox[0] = FLUSH_ADAPTER;
4891
4892        free_irq(adapter->host->irq, adapter);
4893
4894        /* Issue a blocking (interrupts disabled) command to the card */
4895        issue_scb_block(adapter, raw_mbox);
4896
4897        /* Flush disks cache */
4898        memset(&mbox->m_out, 0, sizeof(raw_mbox));
4899        raw_mbox[0] = FLUSH_SYSTEM;
4900
4901        /* Issue a blocking (interrupts disabled) command to the card */
4902        issue_scb_block(adapter, raw_mbox);
4903        
4904        if (atomic_read(&adapter->pend_cmds) > 0)
4905                printk(KERN_WARNING "megaraid: pending commands!!\n");
4906
4907        /*
4908         * Have a delibrate delay to make sure all the caches are
4909         * actually flushed.
4910         */
4911        for (i = 0; i <= 10; i++)
4912                mdelay(1000);
4913}
4914
4915static void __devexit
4916megaraid_remove_one(struct pci_dev *pdev)
4917{
4918        struct Scsi_Host *host = pci_get_drvdata(pdev);
4919        adapter_t *adapter = (adapter_t *)host->hostdata;
4920
4921        scsi_remove_host(host);
4922
4923        __megaraid_shutdown(adapter);
4924
4925        /* Free our resources */
4926        if (adapter->flag & BOARD_MEMMAP) {
4927                iounmap((void *)adapter->base);
4928                release_mem_region(adapter->host->base, 128);
4929        } else
4930                release_region(adapter->base, 16);
4931
4932        mega_free_sgl(adapter);
4933
4934#ifdef CONFIG_PROC_FS
4935        if (adapter->controller_proc_dir_entry) {
4936                remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4937                remove_proc_entry("config",
4938                                adapter->controller_proc_dir_entry);
4939                remove_proc_entry("mailbox",
4940                                adapter->controller_proc_dir_entry);
4941#if MEGA_HAVE_ENH_PROC
4942                remove_proc_entry("rebuild-rate",
4943                                adapter->controller_proc_dir_entry);
4944                remove_proc_entry("battery-status",
4945                                adapter->controller_proc_dir_entry);
4946
4947                remove_proc_entry("diskdrives-ch0",
4948                                adapter->controller_proc_dir_entry);
4949                remove_proc_entry("diskdrives-ch1",
4950                                adapter->controller_proc_dir_entry);
4951                remove_proc_entry("diskdrives-ch2",
4952                                adapter->controller_proc_dir_entry);
4953                remove_proc_entry("diskdrives-ch3",
4954                                adapter->controller_proc_dir_entry);
4955
4956                remove_proc_entry("raiddrives-0-9",
4957                                adapter->controller_proc_dir_entry);
4958                remove_proc_entry("raiddrives-10-19",
4959                                adapter->controller_proc_dir_entry);
4960                remove_proc_entry("raiddrives-20-29",
4961                                adapter->controller_proc_dir_entry);
4962                remove_proc_entry("raiddrives-30-39",
4963                                adapter->controller_proc_dir_entry);
4964#endif
4965                {
4966                        char    buf[12] = { 0 };
4967                        sprintf(buf, "hba%d", adapter->host->host_no);
4968                        remove_proc_entry(buf, mega_proc_dir_entry);
4969                }
4970        }
4971#endif
4972
4973        pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4974                        adapter->mega_buffer, adapter->buf_dma_handle);
4975        kfree(adapter->scb_list);
4976        pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4977                        adapter->una_mbox64, adapter->una_mbox64_dma);
4978
4979        scsi_host_put(host);
4980        pci_disable_device(pdev);
4981
4982        hba_count--;
4983}
4984
4985static void
4986megaraid_shutdown(struct pci_dev *pdev)
4987{
4988        struct Scsi_Host *host = pci_get_drvdata(pdev);
4989        adapter_t *adapter = (adapter_t *)host->hostdata;
4990
4991        __megaraid_shutdown(adapter);
4992}
4993
4994static struct pci_device_id megaraid_pci_tbl[] = {
4995        {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4996                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4997        {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4998                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4999        {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5000                PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5001        {0,}
5002};
5003MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5004
5005static struct pci_driver megaraid_pci_driver = {
5006        .name           = "megaraid_legacy",
5007        .id_table       = megaraid_pci_tbl,
5008        .probe          = megaraid_probe_one,
5009        .remove         = __devexit_p(megaraid_remove_one),
5010        .shutdown       = megaraid_shutdown,
5011};
5012
5013static int __init megaraid_init(void)
5014{
5015        int error;
5016
5017        if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5018                max_cmd_per_lun = MAX_CMD_PER_LUN;
5019        if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5020                max_mbox_busy_wait = MBOX_BUSY_WAIT;
5021
5022#ifdef CONFIG_PROC_FS
5023        mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
5024        if (!mega_proc_dir_entry) {
5025                printk(KERN_WARNING
5026                                "megaraid: failed to create megaraid root\n");
5027        }
5028#endif
5029        error = pci_register_driver(&megaraid_pci_driver);
5030        if (error) {
5031#ifdef CONFIG_PROC_FS
5032                remove_proc_entry("megaraid", NULL);
5033#endif
5034                return error;
5035        }
5036
5037        /*
5038         * Register the driver as a character device, for applications
5039         * to access it for ioctls.
5040         * First argument (major) to register_chrdev implies a dynamic
5041         * major number allocation.
5042         */
5043        major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5044        if (!major) {
5045                printk(KERN_WARNING
5046                                "megaraid: failed to register char device\n");
5047        }
5048
5049        return 0;
5050}
5051
5052static void __exit megaraid_exit(void)
5053{
5054        /*
5055         * Unregister the character device interface to the driver.
5056         */
5057        unregister_chrdev(major, "megadev_legacy");
5058
5059        pci_unregister_driver(&megaraid_pci_driver);
5060
5061#ifdef CONFIG_PROC_FS
5062        remove_proc_entry("megaraid", NULL);
5063#endif
5064}
5065
5066module_init(megaraid_init);
5067module_exit(megaraid_exit);
5068
5069/* vi: set ts=8 sw=8 tw=78: */
5070