/*
 *      Adaptec AAC series RAID controller driver
 *      (c) Copyright 2001 Red Hat Inc.
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000-2010 Adaptec, Inc.
 *               2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/completion.h>
#include <linux/blkdev.h>
#include <asm/uaccess.h>
#include <linux/highmem.h> /* For flush_kernel_dcache_page */
#include <linux/module.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>

#include "aacraid.h"

/* values for inqd_pdt: Peripheral device type in plain English */
#define INQD_PDT_DA     0x00    /* Direct-access (DISK) device */
#define INQD_PDT_PROC   0x03    /* Processor device */
#define INQD_PDT_CHNGR  0x08    /* Changer (jukebox, scsi2) */
#define INQD_PDT_COMM   0x09    /* Communication device (scsi2) */
#define INQD_PDT_NOLUN2 0x1f    /* Unknown Device (scsi2) */
#define INQD_PDT_NOLUN  0x7f    /* Logical Unit Not Present */

#define INQD_PDT_DMASK  0x1F    /* Peripheral Device Type Mask */
#define INQD_PDT_QMASK  0xE0    /* Peripheral Device Qualifer Mask */

/*
 *      Sense codes
 */

#define SENCODE_NO_SENSE                        0x00
#define SENCODE_END_OF_DATA                     0x00
#define SENCODE_BECOMING_READY                  0x04
#define SENCODE_INIT_CMD_REQUIRED               0x04
#define SENCODE_PARAM_LIST_LENGTH_ERROR         0x1A
#define SENCODE_INVALID_COMMAND                 0x20
#define SENCODE_LBA_OUT_OF_RANGE                0x21
#define SENCODE_INVALID_CDB_FIELD               0x24
#define SENCODE_LUN_NOT_SUPPORTED               0x25
#define SENCODE_INVALID_PARAM_FIELD             0x26
#define SENCODE_PARAM_NOT_SUPPORTED             0x26
#define SENCODE_PARAM_VALUE_INVALID             0x26
#define SENCODE_RESET_OCCURRED                  0x29
#define SENCODE_LUN_NOT_SELF_CONFIGURED_YET     0x3E
#define SENCODE_INQUIRY_DATA_CHANGED            0x3F
#define SENCODE_SAVING_PARAMS_NOT_SUPPORTED     0x39
#define SENCODE_DIAGNOSTIC_FAILURE              0x40
#define SENCODE_INTERNAL_TARGET_FAILURE         0x44
#define SENCODE_INVALID_MESSAGE_ERROR           0x49
#define SENCODE_LUN_FAILED_SELF_CONFIG          0x4c
#define SENCODE_OVERLAPPED_COMMAND              0x4E

/*
 *      Additional sense codes
 */

#define ASENCODE_NO_SENSE                       0x00
#define ASENCODE_END_OF_DATA                    0x05
#define ASENCODE_BECOMING_READY                 0x01
#define ASENCODE_INIT_CMD_REQUIRED              0x02
#define ASENCODE_PARAM_LIST_LENGTH_ERROR        0x00
#define ASENCODE_INVALID_COMMAND                0x00
#define ASENCODE_LBA_OUT_OF_RANGE               0x00
#define ASENCODE_INVALID_CDB_FIELD              0x00
#define ASENCODE_LUN_NOT_SUPPORTED              0x00
#define ASENCODE_INVALID_PARAM_FIELD            0x00
#define ASENCODE_PARAM_NOT_SUPPORTED            0x01
#define ASENCODE_PARAM_VALUE_INVALID            0x02
#define ASENCODE_RESET_OCCURRED                 0x00
#define ASENCODE_LUN_NOT_SELF_CONFIGURED_YET    0x00
#define ASENCODE_INQUIRY_DATA_CHANGED           0x03
#define ASENCODE_SAVING_PARAMS_NOT_SUPPORTED    0x00
#define ASENCODE_DIAGNOSTIC_FAILURE             0x80
#define ASENCODE_INTERNAL_TARGET_FAILURE        0x00
#define ASENCODE_INVALID_MESSAGE_ERROR          0x00
#define ASENCODE_LUN_FAILED_SELF_CONFIG         0x00
#define ASENCODE_OVERLAPPED_COMMAND             0x00

#define BYTE0(x) (unsigned char)(x)
#define BYTE1(x) (unsigned char)((x) >> 8)
#define BYTE2(x) (unsigned char)((x) >> 16)
#define BYTE3(x) (unsigned char)((x) >> 24)

/*------------------------------------------------------------------------------
 *              S T R U C T S / T Y P E D E F S
 *----------------------------------------------------------------------------*/
/* SCSI inquiry data */
struct inquiry_data {
        u8 inqd_pdt;    /* Peripheral qualifier | Peripheral Device Type */
        u8 inqd_dtq;    /* RMB | Device Type Qualifier */
        u8 inqd_ver;    /* ISO version | ECMA version | ANSI-approved version */
        u8 inqd_rdf;    /* AENC | TrmIOP | Response data format */
        u8 inqd_len;    /* Additional length (n-4) */
        u8 inqd_pad1[2];/* Reserved - must be zero */
        u8 inqd_pad2;   /* RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
        u8 inqd_vid[8]; /* Vendor ID */
        u8 inqd_pid[16];/* Product ID */
        u8 inqd_prl[4]; /* Product Revision Level */
};

/*
 *              M O D U L E   G L O B A L S
 */

static long aac_build_sg(struct scsi_cmnd *scsicmd, struct sgmap *sgmap);
static long aac_build_sg64(struct scsi_cmnd *scsicmd, struct sgmap64 *psg);
static long aac_build_sgraw(struct scsi_cmnd *scsicmd, struct sgmapraw *psg);
static long aac_build_sgraw2(struct scsi_cmnd *scsicmd,
                                struct aac_raw_io2 *rio2, int sg_max);
static int aac_convert_sgraw2(struct aac_raw_io2 *rio2,
                                int pages, int nseg, int nseg_new);
static int aac_send_srb_fib(struct scsi_cmnd* scsicmd);
#ifdef AAC_DETAILED_STATUS_INFO
static char *aac_get_status_string(u32 status);
#endif

/*
 *      Non dasd selection is handled entirely in aachba now
 */

static int nondasd = -1;
static int aac_cache = 2;       /* WCE=0 to avoid performance problems */
static int dacmode = -1;
int aac_msi;
int aac_commit = -1;
int startup_timeout = 180;
int aif_timeout = 120;
int aac_sync_mode;  /* Only Sync. transfer - disabled */
int aac_convert_sgl = 1;        /* convert non-conformable s/g list - enabled */

module_param(aac_sync_mode, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(aac_sync_mode, "Force sync. transfer mode"
        " 0=off, 1=on");
module_param(aac_convert_sgl, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(aac_convert_sgl, "Convert non-conformable s/g list"
        " 0=off, 1=on");
module_param(nondasd, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices."
        " 0=off, 1=on");
module_param_named(cache, aac_cache, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(cache, "Disable Queue Flush commands:\n"
        "\tbit 0 - Disable FUA in WRITE SCSI commands\n"
        "\tbit 1 - Disable SYNCHRONIZE_CACHE SCSI command\n"
        "\tbit 2 - Disable only if Battery is protecting Cache");
module_param(dacmode, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(dacmode, "Control whether dma addressing is using 64 bit DAC."
        " 0=off, 1=on");
module_param_named(commit, aac_commit, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(commit, "Control whether a COMMIT_CONFIG is issued to the"
        " adapter for foreign arrays.\n"
        "This is typically needed in systems that do not have a BIOS."
        " 0=off, 1=on");
module_param_named(msi, aac_msi, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(msi, "IRQ handling."
        " 0=PIC(default), 1=MSI, 2=MSI-X(unsupported, uses MSI)");
module_param(startup_timeout, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(startup_timeout, "The duration of time in seconds to wait for"
        " adapter to have it's kernel up and\n"
        "running. This is typically adjusted for large systems that do not"
        " have a BIOS.");
module_param(aif_timeout, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(aif_timeout, "The duration of time in seconds to wait for"
        " applications to pick up AIFs before\n"
        "deregistering them. This is typically adjusted for heavily burdened"
        " systems.");

int numacb = -1;
module_param(numacb, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(numacb, "Request a limit to the number of adapter control"
        " blocks (FIB) allocated. Valid values are 512 and down. Default is"
        " to use suggestion from Firmware.");

int acbsize = -1;
module_param(acbsize, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(acbsize, "Request a specific adapter control block (FIB)"
        " size. Valid values are 512, 2048, 4096 and 8192. Default is to use"
        " suggestion from Firmware.");

int update_interval = 30 * 60;
module_param(update_interval, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(update_interval, "Interval in seconds between time sync"
        " updates issued to adapter.");

int check_interval = 24 * 60 * 60;
module_param(check_interval, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(check_interval, "Interval in seconds between adapter health"
        " checks.");

int aac_check_reset = 1;
module_param_named(check_reset, aac_check_reset, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(check_reset, "If adapter fails health check, reset the"
        " adapter. a value of -1 forces the reset to adapters programmed to"
        " ignore it.");

int expose_physicals = -1;
module_param(expose_physicals, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(expose_physicals, "Expose physical components of the arrays."
        " -1=protect 0=off, 1=on");

int aac_reset_devices;
module_param_named(reset_devices, aac_reset_devices, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(reset_devices, "Force an adapter reset at initialization.");

int aac_wwn = 1;
module_param_named(wwn, aac_wwn, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(wwn, "Select a WWN type for the arrays:\n"
        "\t0 - Disable\n"
        "\t1 - Array Meta Data Signature (default)\n"
        "\t2 - Adapter Serial Number");


static inline int aac_valid_context(struct scsi_cmnd *scsicmd,
                struct fib *fibptr) {
        struct scsi_device *device;

        if (unlikely(!scsicmd || !scsicmd->scsi_done)) {
                dprintk((KERN_WARNING "aac_valid_context: scsi command corrupt\n"));
                aac_fib_complete(fibptr);
                aac_fib_free(fibptr);
                return 0;
        }
        scsicmd->SCp.phase = AAC_OWNER_MIDLEVEL;
        device = scsicmd->device;
        if (unlikely(!device || !scsi_device_online(device))) {
                dprintk((KERN_WARNING "aac_valid_context: scsi device corrupt\n"));
                aac_fib_complete(fibptr);
                aac_fib_free(fibptr);
                return 0;
        }
        return 1;
}

/**
 *      aac_get_config_status   -       check the adapter configuration
 *      @common: adapter to query
 *
 *      Query config status, and commit the configuration if needed.
 */
int aac_get_config_status(struct aac_dev *dev, int commit_flag)
{
        int status = 0;
        struct fib * fibptr;

        if (!(fibptr = aac_fib_alloc(dev)))
                return -ENOMEM;

        aac_fib_init(fibptr);
        {
                struct aac_get_config_status *dinfo;
                dinfo = (struct aac_get_config_status *) fib_data(fibptr);

                dinfo->command = cpu_to_le32(VM_ContainerConfig);
                dinfo->type = cpu_to_le32(CT_GET_CONFIG_STATUS);
                dinfo->count = cpu_to_le32(sizeof(((struct aac_get_config_status_resp *)NULL)->data));
        }

        status = aac_fib_send(ContainerCommand,
                            fibptr,
                            sizeof (struct aac_get_config_status),
                            FsaNormal,
                            1, 1,
                            NULL, NULL);
        if (status < 0) {
                printk(KERN_WARNING "aac_get_config_status: SendFIB failed.\n");
        } else {
                struct aac_get_config_status_resp *reply
                  = (struct aac_get_config_status_resp *) fib_data(fibptr);
                dprintk((KERN_WARNING
                  "aac_get_config_status: response=%d status=%d action=%d\n",
                  le32_to_cpu(reply->response),
                  le32_to_cpu(reply->status),
                  le32_to_cpu(reply->data.action)));
                if ((le32_to_cpu(reply->response) != ST_OK) ||
                     (le32_to_cpu(reply->status) != CT_OK) ||
                     (le32_to_cpu(reply->data.action) > CFACT_PAUSE)) {
                        printk(KERN_WARNING "aac_get_config_status: Will not issue the Commit Configuration\n");
                        status = -EINVAL;
                }
        }
        /* Do not set XferState to zero unless receives a response from F/W */
        if (status >= 0)
                aac_fib_complete(fibptr);

        /* Send a CT_COMMIT_CONFIG to enable discovery of devices */
        if (status >= 0) {
                if ((aac_commit == 1) || commit_flag) {
                        struct aac_commit_config * dinfo;
                        aac_fib_init(fibptr);
                        dinfo = (struct aac_commit_config *) fib_data(fibptr);

                        dinfo->command = cpu_to_le32(VM_ContainerConfig);
                        dinfo->type = cpu_to_le32(CT_COMMIT_CONFIG);

                        status = aac_fib_send(ContainerCommand,
                                    fibptr,
                                    sizeof (struct aac_commit_config),
                                    FsaNormal,
                                    1, 1,
                                    NULL, NULL);
                        /* Do not set XferState to zero unless
                         * receives a response from F/W */
                        if (status >= 0)
                                aac_fib_complete(fibptr);
                } else if (aac_commit == 0) {
                        printk(KERN_WARNING
                          "aac_get_config_status: Foreign device configurations are being ignored\n");
                }
        }
        /* FIB should be freed only after getting the response from the F/W */
        if (status != -ERESTARTSYS)
                aac_fib_free(fibptr);
        return status;
}

static void aac_expose_phy_device(struct scsi_cmnd *scsicmd)
{
        char inq_data;
        scsi_sg_copy_to_buffer(scsicmd,  &inq_data, sizeof(inq_data));
        if ((inq_data & 0x20) && (inq_data & 0x1f) == TYPE_DISK) {
                inq_data &= 0xdf;
                scsi_sg_copy_from_buffer(scsicmd, &inq_data, sizeof(inq_data));
        }
}

/**
 *      aac_get_containers      -       list containers
 *      @common: adapter to probe
 *
 *      Make a list of all containers on this controller
 */
int aac_get_containers(struct aac_dev *dev)
{
        struct fsa_dev_info *fsa_dev_ptr;
        u32 index;
        int status = 0;
        struct fib * fibptr;
        struct aac_get_container_count *dinfo;
        struct aac_get_container_count_resp *dresp;
        int maximum_num_containers = MAXIMUM_NUM_CONTAINERS;

        if (!(fibptr = aac_fib_alloc(dev)))
                return -ENOMEM;

        aac_fib_init(fibptr);
        dinfo = (struct aac_get_container_count *) fib_data(fibptr);
        dinfo->command = cpu_to_le32(VM_ContainerConfig);
        dinfo->type = cpu_to_le32(CT_GET_CONTAINER_COUNT);

        status = aac_fib_send(ContainerCommand,
                    fibptr,
                    sizeof (struct aac_get_container_count),
                    FsaNormal,
                    1, 1,
                    NULL, NULL);
        if (status >= 0) {
                dresp = (struct aac_get_container_count_resp *)fib_data(fibptr);
                maximum_num_containers = le32_to_cpu(dresp->ContainerSwitchEntries);
                aac_fib_complete(fibptr);
        }
        /* FIB should be freed only after getting the response from the F/W */
        if (status != -ERESTARTSYS)
                aac_fib_free(fibptr);

        if (maximum_num_containers < MAXIMUM_NUM_CONTAINERS)
                maximum_num_containers = MAXIMUM_NUM_CONTAINERS;
        fsa_dev_ptr = kzalloc(sizeof(*fsa_dev_ptr) * maximum_num_containers,
                        GFP_KERNEL);
        if (!fsa_dev_ptr)
                return -ENOMEM;

        dev->fsa_dev = fsa_dev_ptr;
        dev->maximum_num_containers = maximum_num_containers;

        for (index = 0; index < dev->maximum_num_containers; ) {
                fsa_dev_ptr[index].devname[0] = '\0';

                status = aac_probe_container(dev, index);

                if (status < 0) {
                        printk(KERN_WARNING "aac_get_containers: SendFIB failed.\n");
                        break;
                }

                /*
                 *      If there are no more containers, then stop asking.
                 */
                if (++index >= status)
                        break;
        }
        return status;
}

static void get_container_name_callback(void *context, struct fib * fibptr)
{
        struct aac_get_name_resp * get_name_reply;
        struct scsi_cmnd * scsicmd;

        scsicmd = (struct scsi_cmnd *) context;

        if (!aac_valid_context(scsicmd, fibptr))
                return;

        dprintk((KERN_DEBUG "get_container_name_callback[cpu %d]: t = %ld.\n", smp_processor_id(), jiffies));
        BUG_ON(fibptr == NULL);

        get_name_reply = (struct aac_get_name_resp *) fib_data(fibptr);
        /* Failure is irrelevant, using default value instead */
        if ((le32_to_cpu(get_name_reply->status) == CT_OK)
         && (get_name_reply->data[0] != '\0')) {
                char *sp = get_name_reply->data;
                sp[sizeof(((struct aac_get_name_resp *)NULL)->data)-1] = '\0';
                while (*sp == ' ')
                        ++sp;
                if (*sp) {
                        struct inquiry_data inq;
                        char d[sizeof(((struct inquiry_data *)NULL)->inqd_pid)];
                        int count = sizeof(d);
                        char *dp = d;
                        do {
                                *dp++ = (*sp) ? *sp++ : ' ';
                        } while (--count > 0);

                        scsi_sg_copy_to_buffer(scsicmd, &inq, sizeof(inq));
                        memcpy(inq.inqd_pid, d, sizeof(d));
                        scsi_sg_copy_from_buffer(scsicmd, &inq, sizeof(inq));
                }
        }

        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;

        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        scsicmd->scsi_done(scsicmd);
}

/**
 *      aac_get_container_name  -       get container name, none blocking.
 */
static int aac_get_container_name(struct scsi_cmnd * scsicmd)
{
        int status;
        struct aac_get_name *dinfo;
        struct fib * cmd_fibcontext;
        struct aac_dev * dev;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;

        if (!(cmd_fibcontext = aac_fib_alloc(dev)))
                return -ENOMEM;

        aac_fib_init(cmd_fibcontext);
        dinfo = (struct aac_get_name *) fib_data(cmd_fibcontext);

        dinfo->command = cpu_to_le32(VM_ContainerConfig);
        dinfo->type = cpu_to_le32(CT_READ_NAME);
        dinfo->cid = cpu_to_le32(scmd_id(scsicmd));
        dinfo->count = cpu_to_le32(sizeof(((struct aac_get_name_resp *)NULL)->data));

        status = aac_fib_send(ContainerCommand,
                  cmd_fibcontext,
                  sizeof (struct aac_get_name),
                  FsaNormal,
                  0, 1,
                  (fib_callback)get_container_name_callback,
                  (void *) scsicmd);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING "aac_get_container_name: aac_fib_send failed with status: %d.\n", status);
        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return -1;
}

static int aac_probe_container_callback2(struct scsi_cmnd * scsicmd)
{
        struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev;

        if ((fsa_dev_ptr[scmd_id(scsicmd)].valid & 1))
                return aac_scsi_cmd(scsicmd);

        scsicmd->result = DID_NO_CONNECT << 16;
        scsicmd->scsi_done(scsicmd);
        return 0;
}

static void _aac_probe_container2(void * context, struct fib * fibptr)
{
        struct fsa_dev_info *fsa_dev_ptr;
        int (*callback)(struct scsi_cmnd *);
        struct scsi_cmnd * scsicmd = (struct scsi_cmnd *)context;


        if (!aac_valid_context(scsicmd, fibptr))
                return;

        scsicmd->SCp.Status = 0;
        fsa_dev_ptr = fibptr->dev->fsa_dev;
        if (fsa_dev_ptr) {
                struct aac_mount * dresp = (struct aac_mount *) fib_data(fibptr);
                fsa_dev_ptr += scmd_id(scsicmd);

                if ((le32_to_cpu(dresp->status) == ST_OK) &&
                    (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE) &&
                    (le32_to_cpu(dresp->mnt[0].state) != FSCS_HIDDEN)) {
                        fsa_dev_ptr->valid = 1;
                        /* sense_key holds the current state of the spin-up */
                        if (dresp->mnt[0].state & cpu_to_le32(FSCS_NOT_READY))
                                fsa_dev_ptr->sense_data.sense_key = NOT_READY;
                        else if (fsa_dev_ptr->sense_data.sense_key == NOT_READY)
                                fsa_dev_ptr->sense_data.sense_key = NO_SENSE;
                        fsa_dev_ptr->type = le32_to_cpu(dresp->mnt[0].vol);
                        fsa_dev_ptr->size
                          = ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
                            (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32);
                        fsa_dev_ptr->ro = ((le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY) != 0);
                }
                if ((fsa_dev_ptr->valid & 1) == 0)
                        fsa_dev_ptr->valid = 0;
                scsicmd->SCp.Status = le32_to_cpu(dresp->count);
        }
        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        callback = (int (*)(struct scsi_cmnd *))(scsicmd->SCp.ptr);
        scsicmd->SCp.ptr = NULL;
        (*callback)(scsicmd);
        return;
}

static void _aac_probe_container1(void * context, struct fib * fibptr)
{
        struct scsi_cmnd * scsicmd;
        struct aac_mount * dresp;
        struct aac_query_mount *dinfo;
        int status;

        dresp = (struct aac_mount *) fib_data(fibptr);
        dresp->mnt[0].capacityhigh = 0;
        if ((le32_to_cpu(dresp->status) != ST_OK) ||
            (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE)) {
                _aac_probe_container2(context, fibptr);
                return;
        }
        scsicmd = (struct scsi_cmnd *) context;

        if (!aac_valid_context(scsicmd, fibptr))
                return;

        aac_fib_init(fibptr);

        dinfo = (struct aac_query_mount *)fib_data(fibptr);

        dinfo->command = cpu_to_le32(VM_NameServe64);
        dinfo->count = cpu_to_le32(scmd_id(scsicmd));
        dinfo->type = cpu_to_le32(FT_FILESYS);

        status = aac_fib_send(ContainerCommand,
                          fibptr,
                          sizeof(struct aac_query_mount),
                          FsaNormal,
                          0, 1,
                          _aac_probe_container2,
                          (void *) scsicmd);
        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS)
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
        else if (status < 0) {
                /* Inherit results from VM_NameServe, if any */
                dresp->status = cpu_to_le32(ST_OK);
                _aac_probe_container2(context, fibptr);
        }
}

static int _aac_probe_container(struct scsi_cmnd * scsicmd, int (*callback)(struct scsi_cmnd *))
{
        struct fib * fibptr;
        int status = -ENOMEM;

        if ((fibptr = aac_fib_alloc((struct aac_dev *)scsicmd->device->host->hostdata))) {
                struct aac_query_mount *dinfo;

                aac_fib_init(fibptr);

                dinfo = (struct aac_query_mount *)fib_data(fibptr);

                dinfo->command = cpu_to_le32(VM_NameServe);
                dinfo->count = cpu_to_le32(scmd_id(scsicmd));
                dinfo->type = cpu_to_le32(FT_FILESYS);
                scsicmd->SCp.ptr = (char *)callback;

                status = aac_fib_send(ContainerCommand,
                          fibptr,
                          sizeof(struct aac_query_mount),
                          FsaNormal,
                          0, 1,
                          _aac_probe_container1,
                          (void *) scsicmd);
                /*
                 *      Check that the command queued to the controller
                 */
                if (status == -EINPROGRESS) {
                        scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                        return 0;
                }
                if (status < 0) {
                        scsicmd->SCp.ptr = NULL;
                        aac_fib_complete(fibptr);
                        aac_fib_free(fibptr);
                }
        }
        if (status < 0) {
                struct fsa_dev_info *fsa_dev_ptr = ((struct aac_dev *)(scsicmd->device->host->hostdata))->fsa_dev;
                if (fsa_dev_ptr) {
                        fsa_dev_ptr += scmd_id(scsicmd);
                        if ((fsa_dev_ptr->valid & 1) == 0) {
                                fsa_dev_ptr->valid = 0;
                                return (*callback)(scsicmd);
                        }
                }
        }
        return status;
}

/**
 *      aac_probe_container             -       query a logical volume
 *      @dev: device to query
 *      @cid: container identifier
 *
 *      Queries the controller about the given volume. The volume information
 *      is updated in the struct fsa_dev_info structure rather than returned.
 */
static int aac_probe_container_callback1(struct scsi_cmnd * scsicmd)
{
        scsicmd->device = NULL;
        return 0;
}

int aac_probe_container(struct aac_dev *dev, int cid)
{
        struct scsi_cmnd *scsicmd = kmalloc(sizeof(*scsicmd), GFP_KERNEL);
        struct scsi_device *scsidev = kmalloc(sizeof(*scsidev), GFP_KERNEL);
        int status;

        if (!scsicmd || !scsidev) {
                kfree(scsicmd);
                kfree(scsidev);
                return -ENOMEM;
        }
        scsicmd->list.next = NULL;
        scsicmd->scsi_done = (void (*)(struct scsi_cmnd*))aac_probe_container_callback1;

        scsicmd->device = scsidev;
        scsidev->sdev_state = 0;
        scsidev->id = cid;
        scsidev->host = dev->scsi_host_ptr;

        if (_aac_probe_container(scsicmd, aac_probe_container_callback1) == 0)
                while (scsicmd->device == scsidev)
                        schedule();
        kfree(scsidev);
        status = scsicmd->SCp.Status;
        kfree(scsicmd);
        return status;
}

/* Local Structure to set SCSI inquiry data strings */
struct scsi_inq {
        char vid[8];         /* Vendor ID */
        char pid[16];        /* Product ID */
        char prl[4];         /* Product Revision Level */
};

/**
 *      InqStrCopy      -       string merge
 *      @a:     string to copy from
 *      @b:     string to copy to
 *
 *      Copy a String from one location to another
 *      without copying \0
 */

static void inqstrcpy(char *a, char *b)
{

        while (*a != (char)0)
                *b++ = *a++;
}

static char *container_types[] = {
        "None",
        "Volume",
        "Mirror",
        "Stripe",
        "RAID5",
        "SSRW",
        "SSRO",
        "Morph",
        "Legacy",
        "RAID4",
        "RAID10",
        "RAID00",
        "V-MIRRORS",
        "PSEUDO R4",
        "RAID50",
        "RAID5D",
        "RAID5D0",
        "RAID1E",
        "RAID6",
        "RAID60",
        "Unknown"
};

char * get_container_type(unsigned tindex)
{
        if (tindex >= ARRAY_SIZE(container_types))
                tindex = ARRAY_SIZE(container_types) - 1;
        return container_types[tindex];
}

/* Function: setinqstr
 *
 * Arguments: [1] pointer to void [1] int
 *
 * Purpose: Sets SCSI inquiry data strings for vendor, product
 * and revision level. Allows strings to be set in platform dependent
 * files instead of in OS dependent driver source.
 */

static void setinqstr(struct aac_dev *dev, void *data, int tindex)
{
        struct scsi_inq *str;

        str = (struct scsi_inq *)(data); /* cast data to scsi inq block */
        memset(str, ' ', sizeof(*str));

        if (dev->supplement_adapter_info.AdapterTypeText[0]) {
                char * cp = dev->supplement_adapter_info.AdapterTypeText;
                int c;
                if ((cp[0] == 'A') && (cp[1] == 'O') && (cp[2] == 'C'))
                        inqstrcpy("SMC", str->vid);
                else {
                        c = sizeof(str->vid);
                        while (*cp && *cp != ' ' && --c)
                                ++cp;
                        c = *cp;
                        *cp = '\0';
                        inqstrcpy (dev->supplement_adapter_info.AdapterTypeText,
                                   str->vid);
                        *cp = c;
                        while (*cp && *cp != ' ')
                                ++cp;
                }
                while (*cp == ' ')
                        ++cp;
                /* last six chars reserved for vol type */
                c = 0;
                if (strlen(cp) > sizeof(str->pid)) {
                        c = cp[sizeof(str->pid)];
                        cp[sizeof(str->pid)] = '\0';
                }
                inqstrcpy (cp, str->pid);
                if (c)
                        cp[sizeof(str->pid)] = c;
        } else {
                struct aac_driver_ident *mp = aac_get_driver_ident(dev->cardtype);

                inqstrcpy (mp->vname, str->vid);
                /* last six chars reserved for vol type */
                inqstrcpy (mp->model, str->pid);
        }

        if (tindex < ARRAY_SIZE(container_types)){
                char *findit = str->pid;

                for ( ; *findit != ' '; findit++); /* walk till we find a space */
                /* RAID is superfluous in the context of a RAID device */
                if (memcmp(findit-4, "RAID", 4) == 0)
                        *(findit -= 4) = ' ';
                if (((findit - str->pid) + strlen(container_types[tindex]))
                 < (sizeof(str->pid) + sizeof(str->prl)))
                        inqstrcpy (container_types[tindex], findit + 1);
        }
        inqstrcpy ("V1.0", str->prl);
}

static void get_container_serial_callback(void *context, struct fib * fibptr)
{
        struct aac_get_serial_resp * get_serial_reply;
        struct scsi_cmnd * scsicmd;

        BUG_ON(fibptr == NULL);

        scsicmd = (struct scsi_cmnd *) context;
        if (!aac_valid_context(scsicmd, fibptr))
                return;

        get_serial_reply = (struct aac_get_serial_resp *) fib_data(fibptr);
        /* Failure is irrelevant, using default value instead */
        if (le32_to_cpu(get_serial_reply->status) == CT_OK) {
                char sp[13];
                /* EVPD bit set */
                sp[0] = INQD_PDT_DA;
                sp[1] = scsicmd->cmnd[2];
                sp[2] = 0;
                sp[3] = snprintf(sp+4, sizeof(sp)-4, "%08X",
                  le32_to_cpu(get_serial_reply->uid));
                scsi_sg_copy_from_buffer(scsicmd, sp, sizeof(sp));
        }

        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;

        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        scsicmd->scsi_done(scsicmd);
}

/**
 *      aac_get_container_serial - get container serial, none blocking.
 */
static int aac_get_container_serial(struct scsi_cmnd * scsicmd)
{
        int status;
        struct aac_get_serial *dinfo;
        struct fib * cmd_fibcontext;
        struct aac_dev * dev;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;

        if (!(cmd_fibcontext = aac_fib_alloc(dev)))
                return -ENOMEM;

        aac_fib_init(cmd_fibcontext);
        dinfo = (struct aac_get_serial *) fib_data(cmd_fibcontext);

        dinfo->command = cpu_to_le32(VM_ContainerConfig);
        dinfo->type = cpu_to_le32(CT_CID_TO_32BITS_UID);
        dinfo->cid = cpu_to_le32(scmd_id(scsicmd));

        status = aac_fib_send(ContainerCommand,
                  cmd_fibcontext,
                  sizeof (struct aac_get_serial),
                  FsaNormal,
                  0, 1,
                  (fib_callback) get_container_serial_callback,
                  (void *) scsicmd);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING "aac_get_container_serial: aac_fib_send failed with status: %d.\n", status);
        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return -1;
}

/* Function: setinqserial
 *
 * Arguments: [1] pointer to void [1] int
 *
 * Purpose: Sets SCSI Unit Serial number.
 *          This is a fake. We should read a proper
 *          serial number from the container. <SuSE>But
 *          without docs it's quite hard to do it :-)
 *          So this will have to do in the meantime.</SuSE>
 */

static int setinqserial(struct aac_dev *dev, void *data, int cid)
{
        /*
         *      This breaks array migration.
         */
        return snprintf((char *)(data), sizeof(struct scsi_inq) - 4, "%08X%02X",
                        le32_to_cpu(dev->adapter_info.serial[0]), cid);
}

static inline void set_sense(struct sense_data *sense_data, u8 sense_key,
        u8 sense_code, u8 a_sense_code, u8 bit_pointer, u16 field_pointer)
{
        u8 *sense_buf = (u8 *)sense_data;
        /* Sense data valid, err code 70h */
        sense_buf[0] = 0x70; /* No info field */
        sense_buf[1] = 0;       /* Segment number, always zero */

        sense_buf[2] = sense_key;       /* Sense key */

        sense_buf[12] = sense_code;     /* Additional sense code */
        sense_buf[13] = a_sense_code;   /* Additional sense code qualifier */

        if (sense_key == ILLEGAL_REQUEST) {
                sense_buf[7] = 10;      /* Additional sense length */

                sense_buf[15] = bit_pointer;
                /* Illegal parameter is in the parameter block */
                if (sense_code == SENCODE_INVALID_CDB_FIELD)
                        sense_buf[15] |= 0xc0;/* Std sense key specific field */
                /* Illegal parameter is in the CDB block */
                sense_buf[16] = field_pointer >> 8;     /* MSB */
                sense_buf[17] = field_pointer;          /* LSB */
        } else
                sense_buf[7] = 6;       /* Additional sense length */
}

static int aac_bounds_32(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
{
        if (lba & 0xffffffff00000000LL) {
                int cid = scmd_id(cmd);
                dprintk((KERN_DEBUG "aacraid: Illegal lba\n"));
                cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
                  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
                memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                cmd->scsi_done(cmd);
                return 1;
        }
        return 0;
}

static int aac_bounds_64(struct aac_dev * dev, struct scsi_cmnd * cmd, u64 lba)
{
        return 0;
}

static void io_callback(void *context, struct fib * fibptr);

static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
{
        struct aac_dev *dev = fib->dev;
        u16 fibsize, command;
        long ret;

        aac_fib_init(fib);
        if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 && !dev->sync_mode) {
                struct aac_raw_io2 *readcmd2;
                readcmd2 = (struct aac_raw_io2 *) fib_data(fib);
                memset(readcmd2, 0, sizeof(struct aac_raw_io2));
                readcmd2->blockLow = cpu_to_le32((u32)(lba&0xffffffff));
                readcmd2->blockHigh = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
                readcmd2->byteCount = cpu_to_le32(count<<9);
                readcmd2->cid = cpu_to_le16(scmd_id(cmd));
                readcmd2->flags = cpu_to_le16(RIO2_IO_TYPE_READ);
                ret = aac_build_sgraw2(cmd, readcmd2,
                                dev->scsi_host_ptr->sg_tablesize);
                if (ret < 0)
                        return ret;
                command = ContainerRawIo2;
                fibsize = sizeof(struct aac_raw_io2) +
                        ((le32_to_cpu(readcmd2->sgeCnt)-1) * sizeof(struct sge_ieee1212));
        } else {
                struct aac_raw_io *readcmd;
                readcmd = (struct aac_raw_io *) fib_data(fib);
                readcmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
                readcmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
                readcmd->count = cpu_to_le32(count<<9);

                readcmd->cid = cpu_to_le16(scmd_id(cmd));
                readcmd->flags = cpu_to_le16(RIO_TYPE_READ);
                readcmd->bpTotal = 0;
                readcmd->bpComplete = 0;
                ret = aac_build_sgraw(cmd, &readcmd->sg);
                if (ret < 0)
                        return ret;
                command = ContainerRawIo;
                fibsize = sizeof(struct aac_raw_io) +
                        ((le32_to_cpu(readcmd->sg.count)-1) * sizeof(struct sgentryraw));
        }

        BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(command,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static int aac_read_block64(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
{
        u16 fibsize;
        struct aac_read64 *readcmd;
        long ret;

        aac_fib_init(fib);
        readcmd = (struct aac_read64 *) fib_data(fib);
        readcmd->command = cpu_to_le32(VM_CtHostRead64);
        readcmd->cid = cpu_to_le16(scmd_id(cmd));
        readcmd->sector_count = cpu_to_le16(count);
        readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
        readcmd->pad   = 0;
        readcmd->flags = 0;

        ret = aac_build_sg64(cmd, &readcmd->sg);
        if (ret < 0)
                return ret;
        fibsize = sizeof(struct aac_read64) +
                ((le32_to_cpu(readcmd->sg.count) - 1) *
                 sizeof (struct sgentry64));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ContainerCommand64,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static int aac_read_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count)
{
        u16 fibsize;
        struct aac_read *readcmd;
        long ret;

        aac_fib_init(fib);
        readcmd = (struct aac_read *) fib_data(fib);
        readcmd->command = cpu_to_le32(VM_CtBlockRead);
        readcmd->cid = cpu_to_le32(scmd_id(cmd));
        readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
        readcmd->count = cpu_to_le32(count * 512);

        ret = aac_build_sg(cmd, &readcmd->sg);
        if (ret < 0)
                return ret;
        fibsize = sizeof(struct aac_read) +
                        ((le32_to_cpu(readcmd->sg.count) - 1) *
                         sizeof (struct sgentry));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ContainerCommand,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
{
        struct aac_dev *dev = fib->dev;
        u16 fibsize, command;
        long ret;

        aac_fib_init(fib);
        if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 && !dev->sync_mode) {
                struct aac_raw_io2 *writecmd2;
                writecmd2 = (struct aac_raw_io2 *) fib_data(fib);
                memset(writecmd2, 0, sizeof(struct aac_raw_io2));
                writecmd2->blockLow = cpu_to_le32((u32)(lba&0xffffffff));
                writecmd2->blockHigh = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
                writecmd2->byteCount = cpu_to_le32(count<<9);
                writecmd2->cid = cpu_to_le16(scmd_id(cmd));
                writecmd2->flags = (fua && ((aac_cache & 5) != 1) &&
                                                   (((aac_cache & 5) != 5) || !fib->dev->cache_protected)) ?
                        cpu_to_le16(RIO2_IO_TYPE_WRITE|RIO2_IO_SUREWRITE) :
                        cpu_to_le16(RIO2_IO_TYPE_WRITE);
                ret = aac_build_sgraw2(cmd, writecmd2,
                                dev->scsi_host_ptr->sg_tablesize);
                if (ret < 0)
                        return ret;
                command = ContainerRawIo2;
                fibsize = sizeof(struct aac_raw_io2) +
                        ((le32_to_cpu(writecmd2->sgeCnt)-1) * sizeof(struct sge_ieee1212));
        } else {
                struct aac_raw_io *writecmd;
                writecmd = (struct aac_raw_io *) fib_data(fib);
                writecmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
                writecmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
                writecmd->count = cpu_to_le32(count<<9);
                writecmd->cid = cpu_to_le16(scmd_id(cmd));
                writecmd->flags = (fua && ((aac_cache & 5) != 1) &&
                                                   (((aac_cache & 5) != 5) || !fib->dev->cache_protected)) ?
                        cpu_to_le16(RIO_TYPE_WRITE|RIO_SUREWRITE) :
                        cpu_to_le16(RIO_TYPE_WRITE);
                writecmd->bpTotal = 0;
                writecmd->bpComplete = 0;
                ret = aac_build_sgraw(cmd, &writecmd->sg);
                if (ret < 0)
                        return ret;
                command = ContainerRawIo;
                fibsize = sizeof(struct aac_raw_io) +
                        ((le32_to_cpu(writecmd->sg.count)-1) * sizeof (struct sgentryraw));
        }

        BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(command,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static int aac_write_block64(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
{
        u16 fibsize;
        struct aac_write64 *writecmd;
        long ret;

        aac_fib_init(fib);
        writecmd = (struct aac_write64 *) fib_data(fib);
        writecmd->command = cpu_to_le32(VM_CtHostWrite64);
        writecmd->cid = cpu_to_le16(scmd_id(cmd));
        writecmd->sector_count = cpu_to_le16(count);
        writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
        writecmd->pad   = 0;
        writecmd->flags = 0;

        ret = aac_build_sg64(cmd, &writecmd->sg);
        if (ret < 0)
                return ret;
        fibsize = sizeof(struct aac_write64) +
                ((le32_to_cpu(writecmd->sg.count) - 1) *
                 sizeof (struct sgentry64));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ContainerCommand64,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static int aac_write_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua)
{
        u16 fibsize;
        struct aac_write *writecmd;
        long ret;

        aac_fib_init(fib);
        writecmd = (struct aac_write *) fib_data(fib);
        writecmd->command = cpu_to_le32(VM_CtBlockWrite);
        writecmd->cid = cpu_to_le32(scmd_id(cmd));
        writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
        writecmd->count = cpu_to_le32(count * 512);
        writecmd->sg.count = cpu_to_le32(1);
        /* ->stable is not used - it did mean which type of write */

        ret = aac_build_sg(cmd, &writecmd->sg);
        if (ret < 0)
                return ret;
        fibsize = sizeof(struct aac_write) +
                ((le32_to_cpu(writecmd->sg.count) - 1) *
                 sizeof (struct sgentry));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));
        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ContainerCommand,
                          fib,
                          fibsize,
                          FsaNormal,
                          0, 1,
                          (fib_callback) io_callback,
                          (void *) cmd);
}

static struct aac_srb * aac_scsi_common(struct fib * fib, struct scsi_cmnd * cmd)
{
        struct aac_srb * srbcmd;
        u32 flag;
        u32 timeout;

        aac_fib_init(fib);
        switch(cmd->sc_data_direction){
        case DMA_TO_DEVICE:
                flag = SRB_DataOut;
                break;
        case DMA_BIDIRECTIONAL:
                flag = SRB_DataIn | SRB_DataOut;
                break;
        case DMA_FROM_DEVICE:
                flag = SRB_DataIn;
                break;
        case DMA_NONE:
        default:        /* shuts up some versions of gcc */
                flag = SRB_NoDataXfer;
                break;
        }

        srbcmd = (struct aac_srb*) fib_data(fib);
        srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
        srbcmd->channel  = cpu_to_le32(aac_logical_to_phys(scmd_channel(cmd)));
        srbcmd->id       = cpu_to_le32(scmd_id(cmd));
        srbcmd->lun      = cpu_to_le32(cmd->device->lun);
        srbcmd->flags    = cpu_to_le32(flag);
        timeout = cmd->request->timeout/HZ;
        if (timeout == 0)
                timeout = 1;
        srbcmd->timeout  = cpu_to_le32(timeout);  // timeout in seconds
        srbcmd->retry_limit = 0; /* Obsolete parameter */
        srbcmd->cdb_size = cpu_to_le32(cmd->cmd_len);
        return srbcmd;
}

static void aac_srb_callback(void *context, struct fib * fibptr);

static int aac_scsi_64(struct fib * fib, struct scsi_cmnd * cmd)
{
        u16 fibsize;
        struct aac_srb * srbcmd = aac_scsi_common(fib, cmd);
        long ret;

        ret = aac_build_sg64(cmd, (struct sgmap64 *) &srbcmd->sg);
        if (ret < 0)
                return ret;
        srbcmd->count = cpu_to_le32(scsi_bufflen(cmd));

        memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
        memcpy(srbcmd->cdb, cmd->cmnd, cmd->cmd_len);
        /*
         *      Build Scatter/Gather list
         */
        fibsize = sizeof (struct aac_srb) - sizeof (struct sgentry) +
                ((le32_to_cpu(srbcmd->sg.count) & 0xff) *
                 sizeof (struct sgentry64));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));

        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ScsiPortCommand64, fib,
                                fibsize, FsaNormal, 0, 1,
                                  (fib_callback) aac_srb_callback,
                                  (void *) cmd);
}

static int aac_scsi_32(struct fib * fib, struct scsi_cmnd * cmd)
{
        u16 fibsize;
        struct aac_srb * srbcmd = aac_scsi_common(fib, cmd);
        long ret;

        ret = aac_build_sg(cmd, (struct sgmap *)&srbcmd->sg);
        if (ret < 0)
                return ret;
        srbcmd->count = cpu_to_le32(scsi_bufflen(cmd));

        memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
        memcpy(srbcmd->cdb, cmd->cmnd, cmd->cmd_len);
        /*
         *      Build Scatter/Gather list
         */
        fibsize = sizeof (struct aac_srb) +
                (((le32_to_cpu(srbcmd->sg.count) & 0xff) - 1) *
                 sizeof (struct sgentry));
        BUG_ON (fibsize > (fib->dev->max_fib_size -
                                sizeof(struct aac_fibhdr)));

        /*
         *      Now send the Fib to the adapter
         */
        return aac_fib_send(ScsiPortCommand, fib, fibsize, FsaNormal, 0, 1,
                                  (fib_callback) aac_srb_callback, (void *) cmd);
}

static int aac_scsi_32_64(struct fib * fib, struct scsi_cmnd * cmd)
{
        if ((sizeof(dma_addr_t) > 4) && fib->dev->needs_dac &&
            (fib->dev->adapter_info.options & AAC_OPT_SGMAP_HOST64))
                return FAILED;
        return aac_scsi_32(fib, cmd);
}

int aac_get_adapter_info(struct aac_dev* dev)
{
        struct fib* fibptr;
        int rcode;
        u32 tmp;
        struct aac_adapter_info *info;
        struct aac_bus_info *command;
        struct aac_bus_info_response *bus_info;

        if (!(fibptr = aac_fib_alloc(dev)))
                return -ENOMEM;

        aac_fib_init(fibptr);
        info = (struct aac_adapter_info *) fib_data(fibptr);
        memset(info,0,sizeof(*info));

        rcode = aac_fib_send(RequestAdapterInfo,
                         fibptr,
                         sizeof(*info),
                         FsaNormal,
                         -1, 1, /* First `interrupt' command uses special wait */
                         NULL,
                         NULL);

        if (rcode < 0) {
                /* FIB should be freed only after
                 * getting the response from the F/W */
                if (rcode != -ERESTARTSYS) {
                        aac_fib_complete(fibptr);
                        aac_fib_free(fibptr);
                }
                return rcode;
        }
        memcpy(&dev->adapter_info, info, sizeof(*info));

        if (dev->adapter_info.options & AAC_OPT_SUPPLEMENT_ADAPTER_INFO) {
                struct aac_supplement_adapter_info * sinfo;

                aac_fib_init(fibptr);

                sinfo = (struct aac_supplement_adapter_info *) fib_data(fibptr);

                memset(sinfo,0,sizeof(*sinfo));

                rcode = aac_fib_send(RequestSupplementAdapterInfo,
                                 fibptr,
                                 sizeof(*sinfo),
                                 FsaNormal,
                                 1, 1,
                                 NULL,
                                 NULL);

                if (rcode >= 0)
                        memcpy(&dev->supplement_adapter_info, sinfo, sizeof(*sinfo));
                if (rcode == -ERESTARTSYS) {
                        fibptr = aac_fib_alloc(dev);
                        if (!fibptr)
                                return -ENOMEM;
                }

        }


        /*
         * GetBusInfo
         */

        aac_fib_init(fibptr);

        bus_info = (struct aac_bus_info_response *) fib_data(fibptr);

        memset(bus_info, 0, sizeof(*bus_info));

        command = (struct aac_bus_info *)bus_info;

        command->Command = cpu_to_le32(VM_Ioctl);
        command->ObjType = cpu_to_le32(FT_DRIVE);
        command->MethodId = cpu_to_le32(1);
        command->CtlCmd = cpu_to_le32(GetBusInfo);

        rcode = aac_fib_send(ContainerCommand,
                         fibptr,
                         sizeof (*bus_info),
                         FsaNormal,
                         1, 1,
                         NULL, NULL);

        /* reasoned default */
        dev->maximum_num_physicals = 16;
        if (rcode >= 0 && le32_to_cpu(bus_info->Status) == ST_OK) {
                dev->maximum_num_physicals = le32_to_cpu(bus_info->TargetsPerBus);
                dev->maximum_num_channels = le32_to_cpu(bus_info->BusCount);
        }

        if (!dev->in_reset) {
                char buffer[16];
                tmp = le32_to_cpu(dev->adapter_info.kernelrev);
                printk(KERN_INFO "%s%d: kernel %d.%d-%d[%d] %.*s\n",
                        dev->name,
                        dev->id,
                        tmp>>24,
                        (tmp>>16)&0xff,
                        tmp&0xff,
                        le32_to_cpu(dev->adapter_info.kernelbuild),
                        (int)sizeof(dev->supplement_adapter_info.BuildDate),
                        dev->supplement_adapter_info.BuildDate);
                tmp = le32_to_cpu(dev->adapter_info.monitorrev);
                printk(KERN_INFO "%s%d: monitor %d.%d-%d[%d]\n",
                        dev->name, dev->id,
                        tmp>>24,(tmp>>16)&0xff,tmp&0xff,
                        le32_to_cpu(dev->adapter_info.monitorbuild));
                tmp = le32_to_cpu(dev->adapter_info.biosrev);
                printk(KERN_INFO "%s%d: bios %d.%d-%d[%d]\n",
                        dev->name, dev->id,
                        tmp>>24,(tmp>>16)&0xff,tmp&0xff,
                        le32_to_cpu(dev->adapter_info.biosbuild));
                buffer[0] = '\0';
                if (aac_get_serial_number(
                  shost_to_class(dev->scsi_host_ptr), buffer))
                        printk(KERN_INFO "%s%d: serial %s",
                          dev->name, dev->id, buffer);
                if (dev->supplement_adapter_info.VpdInfo.Tsid[0]) {
                        printk(KERN_INFO "%s%d: TSID %.*s\n",
                          dev->name, dev->id,
                          (int)sizeof(dev->supplement_adapter_info.VpdInfo.Tsid),
                          dev->supplement_adapter_info.VpdInfo.Tsid);
                }
                if (!aac_check_reset || ((aac_check_reset == 1) &&
                  (dev->supplement_adapter_info.SupportedOptions2 &
                  AAC_OPTION_IGNORE_RESET))) {
                        printk(KERN_INFO "%s%d: Reset Adapter Ignored\n",
                          dev->name, dev->id);
                }
        }

        dev->cache_protected = 0;
        dev->jbod = ((dev->supplement_adapter_info.FeatureBits &
                AAC_FEATURE_JBOD) != 0);
        dev->nondasd_support = 0;
        dev->raid_scsi_mode = 0;
        if(dev->adapter_info.options & AAC_OPT_NONDASD)
                dev->nondasd_support = 1;

        /*
         * If the firmware supports ROMB RAID/SCSI mode and we are currently
         * in RAID/SCSI mode, set the flag. For now if in this mode we will
         * force nondasd support on. If we decide to allow the non-dasd flag
         * additional changes changes will have to be made to support
         * RAID/SCSI.  the function aac_scsi_cmd in this module will have to be
         * changed to support the new dev->raid_scsi_mode flag instead of
         * leaching off of the dev->nondasd_support flag. Also in linit.c the
         * function aac_detect will have to be modified where it sets up the
         * max number of channels based on the aac->nondasd_support flag only.
         */
        if ((dev->adapter_info.options & AAC_OPT_SCSI_MANAGED) &&
            (dev->adapter_info.options & AAC_OPT_RAID_SCSI_MODE)) {
                dev->nondasd_support = 1;
                dev->raid_scsi_mode = 1;
        }
        if (dev->raid_scsi_mode != 0)
                printk(KERN_INFO "%s%d: ROMB RAID/SCSI mode enabled\n",
                                dev->name, dev->id);

        if (nondasd != -1)
                dev->nondasd_support = (nondasd!=0);
        if (dev->nondasd_support && !dev->in_reset)
                printk(KERN_INFO "%s%d: Non-DASD support enabled.\n",dev->name, dev->id);

        if (dma_get_required_mask(&dev->pdev->dev) > DMA_BIT_MASK(32))
                dev->needs_dac = 1;
        dev->dac_support = 0;
        if ((sizeof(dma_addr_t) > 4) && dev->needs_dac &&
            (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)) {
                if (!dev->in_reset)
                        printk(KERN_INFO "%s%d: 64bit support enabled.\n",
                                dev->name, dev->id);
                dev->dac_support = 1;
        }

        if(dacmode != -1) {
                dev->dac_support = (dacmode!=0);
        }

        /* avoid problems with AAC_QUIRK_SCSI_32 controllers */
        if (dev->dac_support && (aac_get_driver_ident(dev->cardtype)->quirks
                & AAC_QUIRK_SCSI_32)) {
                dev->nondasd_support = 0;
                dev->jbod = 0;
                expose_physicals = 0;
        }

        if(dev->dac_support != 0) {
                if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(64)) &&
                        !pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(64))) {
                        if (!dev->in_reset)
                                printk(KERN_INFO"%s%d: 64 Bit DAC enabled\n",
                                        dev->name, dev->id);
                } else if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(32)) &&
                        !pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(32))) {
                        printk(KERN_INFO"%s%d: DMA mask set failed, 64 Bit DAC disabled\n",
                                dev->name, dev->id);
                        dev->dac_support = 0;
                } else {
                        printk(KERN_WARNING"%s%d: No suitable DMA available.\n",
                                dev->name, dev->id);
                        rcode = -ENOMEM;
                }
        }
        /*
         * Deal with configuring for the individualized limits of each packet
         * interface.
         */
        dev->a_ops.adapter_scsi = (dev->dac_support)
          ? ((aac_get_driver_ident(dev->cardtype)->quirks & AAC_QUIRK_SCSI_32)
                                ? aac_scsi_32_64
                                : aac_scsi_64)
                                : aac_scsi_32;
        if (dev->raw_io_interface) {
                dev->a_ops.adapter_bounds = (dev->raw_io_64)
                                        ? aac_bounds_64
                                        : aac_bounds_32;
                dev->a_ops.adapter_read = aac_read_raw_io;
                dev->a_ops.adapter_write = aac_write_raw_io;
        } else {
                dev->a_ops.adapter_bounds = aac_bounds_32;
                dev->scsi_host_ptr->sg_tablesize = (dev->max_fib_size -
                        sizeof(struct aac_fibhdr) -
                        sizeof(struct aac_write) + sizeof(struct sgentry)) /
                                sizeof(struct sgentry);
                if (dev->dac_support) {
                        dev->a_ops.adapter_read = aac_read_block64;
                        dev->a_ops.adapter_write = aac_write_block64;
                        /*
                         * 38 scatter gather elements
                         */
                        dev->scsi_host_ptr->sg_tablesize =
                                (dev->max_fib_size -
                                sizeof(struct aac_fibhdr) -
                                sizeof(struct aac_write64) +
                                sizeof(struct sgentry64)) /
                                        sizeof(struct sgentry64);
                } else {
                        dev->a_ops.adapter_read = aac_read_block;
                        dev->a_ops.adapter_write = aac_write_block;
                }
                dev->scsi_host_ptr->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
                if (!(dev->adapter_info.options & AAC_OPT_NEW_COMM)) {
                        /*
                         * Worst case size that could cause sg overflow when
                         * we break up SG elements that are larger than 64KB.
                         * Would be nice if we could tell the SCSI layer what
                         * the maximum SG element size can be. Worst case is
                         * (sg_tablesize-1) 4KB elements with one 64KB
                         * element.
                         *      32bit -> 468 or 238KB   64bit -> 424 or 212KB
                         */
                        dev->scsi_host_ptr->max_sectors =
                          (dev->scsi_host_ptr->sg_tablesize * 8) + 112;
                }
        }
        /* FIB should be freed only after getting the response from the F/W */
        if (rcode != -ERESTARTSYS) {
                aac_fib_complete(fibptr);
                aac_fib_free(fibptr);
        }

        return rcode;
}


static void io_callback(void *context, struct fib * fibptr)
{
        struct aac_dev *dev;
        struct aac_read_reply *readreply;
        struct scsi_cmnd *scsicmd;
        u32 cid;

        scsicmd = (struct scsi_cmnd *) context;

        if (!aac_valid_context(scsicmd, fibptr))
                return;

        dev = fibptr->dev;
        cid = scmd_id(scsicmd);

        if (nblank(dprintk(x))) {
                u64 lba;
                switch (scsicmd->cmnd[0]) {
                case WRITE_6:
                case READ_6:
                        lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
                            (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
                        break;
                case WRITE_16:
                case READ_16:
                        lba = ((u64)scsicmd->cmnd[2] << 56) |
                              ((u64)scsicmd->cmnd[3] << 48) |
                              ((u64)scsicmd->cmnd[4] << 40) |
                              ((u64)scsicmd->cmnd[5] << 32) |
                              ((u64)scsicmd->cmnd[6] << 24) |
                              (scsicmd->cmnd[7] << 16) |
                              (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                        break;
                case WRITE_12:
                case READ_12:
                        lba = ((u64)scsicmd->cmnd[2] << 24) |
                              (scsicmd->cmnd[3] << 16) |
                              (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                        break;
                default:
                        lba = ((u64)scsicmd->cmnd[2] << 24) |
                               (scsicmd->cmnd[3] << 16) |
                               (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                        break;
                }
                printk(KERN_DEBUG
                  "io_callback[cpu %d]: lba = %llu, t = %ld.\n",
                  smp_processor_id(), (unsigned long long)lba, jiffies);
        }

        BUG_ON(fibptr == NULL);

        scsi_dma_unmap(scsicmd);

        readreply = (struct aac_read_reply *)fib_data(fibptr);
        switch (le32_to_cpu(readreply->status)) {
        case ST_OK:
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_GOOD;
                dev->fsa_dev[cid].sense_data.sense_key = NO_SENSE;
                break;
        case ST_NOT_READY:
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data, NOT_READY,
                  SENCODE_BECOMING_READY, ASENCODE_BECOMING_READY, 0, 0);
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                break;
        default:
#ifdef AAC_DETAILED_STATUS_INFO
                printk(KERN_WARNING "io_callback: io failed, status = %d\n",
                  le32_to_cpu(readreply->status));
#endif
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
                  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                break;
        }
        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);

        scsicmd->scsi_done(scsicmd);
}

static int aac_read(struct scsi_cmnd * scsicmd)
{
        u64 lba;
        u32 count;
        int status;
        struct aac_dev *dev;
        struct fib * cmd_fibcontext;
        int cid;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;
        /*
         *      Get block address and transfer length
         */
        switch (scsicmd->cmnd[0]) {
        case READ_6:
                dprintk((KERN_DEBUG "aachba: received a read(6) command on id %d.\n", scmd_id(scsicmd)));

                lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
                        (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
                count = scsicmd->cmnd[4];

                if (count == 0)
                        count = 256;
                break;
        case READ_16:
                dprintk((KERN_DEBUG "aachba: received a read(16) command on id %d.\n", scmd_id(scsicmd)));

                lba =   ((u64)scsicmd->cmnd[2] << 56) |
                        ((u64)scsicmd->cmnd[3] << 48) |
                        ((u64)scsicmd->cmnd[4] << 40) |
                        ((u64)scsicmd->cmnd[5] << 32) |
                        ((u64)scsicmd->cmnd[6] << 24) |
                        (scsicmd->cmnd[7] << 16) |
                        (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                count = (scsicmd->cmnd[10] << 24) |
                        (scsicmd->cmnd[11] << 16) |
                        (scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
                break;
        case READ_12:
                dprintk((KERN_DEBUG "aachba: received a read(12) command on id %d.\n", scmd_id(scsicmd)));

                lba = ((u64)scsicmd->cmnd[2] << 24) |
                        (scsicmd->cmnd[3] << 16) |
                        (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                count = (scsicmd->cmnd[6] << 24) |
                        (scsicmd->cmnd[7] << 16) |
                        (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                break;
        default:
                dprintk((KERN_DEBUG "aachba: received a read(10) command on id %d.\n", scmd_id(scsicmd)));

                lba = ((u64)scsicmd->cmnd[2] << 24) |
                        (scsicmd->cmnd[3] << 16) |
                        (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
                break;
        }

        if ((lba + count) > (dev->fsa_dev[scmd_id(scsicmd)].size)) {
                cid = scmd_id(scsicmd);
                dprintk((KERN_DEBUG "aacraid: Illegal lba\n"));
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                          HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
                          ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                scsicmd->scsi_done(scsicmd);
                return 1;
        }

        dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %llu, t = %ld.\n",
          smp_processor_id(), (unsigned long long)lba, jiffies));
        if (aac_adapter_bounds(dev,scsicmd,lba))
                return 0;
        /*
         *      Alocate and initialize a Fib
         */
        if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
                printk(KERN_WARNING "aac_read: fib allocation failed\n");
                return -1;
        }

        status = aac_adapter_read(cmd_fibcontext, scsicmd, lba, count);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING "aac_read: aac_fib_send failed with status: %d.\n", status);
        /*
         *      For some reason, the Fib didn't queue, return QUEUE_FULL
         */
        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_TASK_SET_FULL;
        scsicmd->scsi_done(scsicmd);
        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return 0;
}

static int aac_write(struct scsi_cmnd * scsicmd)
{
        u64 lba;
        u32 count;
        int fua;
        int status;
        struct aac_dev *dev;
        struct fib * cmd_fibcontext;
        int cid;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;
        /*
         *      Get block address and transfer length
         */
        if (scsicmd->cmnd[0] == WRITE_6)        /* 6 byte command */
        {
                lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
                count = scsicmd->cmnd[4];
                if (count == 0)
                        count = 256;
                fua = 0;
        } else if (scsicmd->cmnd[0] == WRITE_16) { /* 16 byte command */
                dprintk((KERN_DEBUG "aachba: received a write(16) command on id %d.\n", scmd_id(scsicmd)));

                lba =   ((u64)scsicmd->cmnd[2] << 56) |
                        ((u64)scsicmd->cmnd[3] << 48) |
                        ((u64)scsicmd->cmnd[4] << 40) |
                        ((u64)scsicmd->cmnd[5] << 32) |
                        ((u64)scsicmd->cmnd[6] << 24) |
                        (scsicmd->cmnd[7] << 16) |
                        (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                count = (scsicmd->cmnd[10] << 24) | (scsicmd->cmnd[11] << 16) |
                        (scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
                fua = scsicmd->cmnd[1] & 0x8;
        } else if (scsicmd->cmnd[0] == WRITE_12) { /* 12 byte command */
                dprintk((KERN_DEBUG "aachba: received a write(12) command on id %d.\n", scmd_id(scsicmd)));

                lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16)
                    | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                count = (scsicmd->cmnd[6] << 24) | (scsicmd->cmnd[7] << 16)
                      | (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
                fua = scsicmd->cmnd[1] & 0x8;
        } else {
                dprintk((KERN_DEBUG "aachba: received a write(10) command on id %d.\n", scmd_id(scsicmd)));
                lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
                count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
                fua = scsicmd->cmnd[1] & 0x8;
        }

        if ((lba + count) > (dev->fsa_dev[scmd_id(scsicmd)].size)) {
                cid = scmd_id(scsicmd);
                dprintk((KERN_DEBUG "aacraid: Illegal lba\n"));
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                        SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                          HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
                          ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                scsicmd->scsi_done(scsicmd);
                return 1;
        }

        dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %llu, t = %ld.\n",
          smp_processor_id(), (unsigned long long)lba, jiffies));
        if (aac_adapter_bounds(dev,scsicmd,lba))
                return 0;
        /*
         *      Allocate and initialize a Fib then setup a BlockWrite command
         */
        if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
                /* FIB temporarily unavailable,not catastrophic failure */

                /* scsicmd->result = DID_ERROR << 16;
                 * scsicmd->scsi_done(scsicmd);
                 * return 0;
                 */
                printk(KERN_WARNING "aac_write: fib allocation failed\n");
                return -1;
        }

        status = aac_adapter_write(cmd_fibcontext, scsicmd, lba, count, fua);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING "aac_write: aac_fib_send failed with status: %d\n", status);
        /*
         *      For some reason, the Fib didn't queue, return QUEUE_FULL
         */
        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_TASK_SET_FULL;
        scsicmd->scsi_done(scsicmd);

        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return 0;
}

static void synchronize_callback(void *context, struct fib *fibptr)
{
        struct aac_synchronize_reply *synchronizereply;
        struct scsi_cmnd *cmd;

        cmd = context;

        if (!aac_valid_context(cmd, fibptr))
                return;

        dprintk((KERN_DEBUG "synchronize_callback[cpu %d]: t = %ld.\n",
                                smp_processor_id(), jiffies));
        BUG_ON(fibptr == NULL);


        synchronizereply = fib_data(fibptr);
        if (le32_to_cpu(synchronizereply->status) == CT_OK)
                cmd->result = DID_OK << 16 |
                        COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
        else {
                struct scsi_device *sdev = cmd->device;
                struct aac_dev *dev = fibptr->dev;
                u32 cid = sdev_id(sdev);
                printk(KERN_WARNING
                     "synchronize_callback: synchronize failed, status = %d\n",
                     le32_to_cpu(synchronizereply->status));
                cmd->result = DID_OK << 16 |
                        COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                  HARDWARE_ERROR, SENCODE_INTERNAL_TARGET_FAILURE,
                  ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0);
                memcpy(cmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
        }

        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        cmd->scsi_done(cmd);
}

static int aac_synchronize(struct scsi_cmnd *scsicmd)
{
        int status;
        struct fib *cmd_fibcontext;
        struct aac_synchronize *synchronizecmd;
        struct scsi_cmnd *cmd;
        struct scsi_device *sdev = scsicmd->device;
        int active = 0;
        struct aac_dev *aac;
        u64 lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) |
                (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
        u32 count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
        unsigned long flags;

        /*
         * Wait for all outstanding queued commands to complete to this
         * specific target (block).
         */
        spin_lock_irqsave(&sdev->list_lock, flags);
        list_for_each_entry(cmd, &sdev->cmd_list, list)
                if (cmd->SCp.phase == AAC_OWNER_FIRMWARE) {
                        u64 cmnd_lba;
                        u32 cmnd_count;

                        if (cmd->cmnd[0] == WRITE_6) {
                                cmnd_lba = ((cmd->cmnd[1] & 0x1F) << 16) |
                                        (cmd->cmnd[2] << 8) |
                                        cmd->cmnd[3];
                                cmnd_count = cmd->cmnd[4];
                                if (cmnd_count == 0)
                                        cmnd_count = 256;
                        } else if (cmd->cmnd[0] == WRITE_16) {
                                cmnd_lba = ((u64)cmd->cmnd[2] << 56) |
                                        ((u64)cmd->cmnd[3] << 48) |
                                        ((u64)cmd->cmnd[4] << 40) |
                                        ((u64)cmd->cmnd[5] << 32) |
                                        ((u64)cmd->cmnd[6] << 24) |
                                        (cmd->cmnd[7] << 16) |
                                        (cmd->cmnd[8] << 8) |
                                        cmd->cmnd[9];
                                cmnd_count = (cmd->cmnd[10] << 24) |
                                        (cmd->cmnd[11] << 16) |
                                        (cmd->cmnd[12] << 8) |
                                        cmd->cmnd[13];
                        } else if (cmd->cmnd[0] == WRITE_12) {
                                cmnd_lba = ((u64)cmd->cmnd[2] << 24) |
                                        (cmd->cmnd[3] << 16) |
                                        (cmd->cmnd[4] << 8) |
                                        cmd->cmnd[5];
                                cmnd_count = (cmd->cmnd[6] << 24) |
                                        (cmd->cmnd[7] << 16) |
                                        (cmd->cmnd[8] << 8) |
                                        cmd->cmnd[9];
                        } else if (cmd->cmnd[0] == WRITE_10) {
                                cmnd_lba = ((u64)cmd->cmnd[2] << 24) |
                                        (cmd->cmnd[3] << 16) |
                                        (cmd->cmnd[4] << 8) |

                                        cmd->cmnd[5];
                                cmnd_count = (cmd->cmnd[7] << 8) |
                                        cmd->cmnd[8];
                        } else
                                continue;
                        if (((cmnd_lba + cmnd_count) < lba) ||
                          (count && ((lba + count) < cmnd_lba)))
                                continue;
                        ++active;
                        break;
                }

        spin_unlock_irqrestore(&sdev->list_lock, flags);

        /*
         *      Yield the processor (requeue for later)
         */
        if (active)
                return SCSI_MLQUEUE_DEVICE_BUSY;

        aac = (struct aac_dev *)sdev->host->hostdata;
        if (aac->in_reset)
                return SCSI_MLQUEUE_HOST_BUSY;

        /*
         *      Allocate and initialize a Fib
         */
        if (!(cmd_fibcontext = aac_fib_alloc(aac)))
                return SCSI_MLQUEUE_HOST_BUSY;

        aac_fib_init(cmd_fibcontext);

        synchronizecmd = fib_data(cmd_fibcontext);
        synchronizecmd->command = cpu_to_le32(VM_ContainerConfig);
        synchronizecmd->type = cpu_to_le32(CT_FLUSH_CACHE);
        synchronizecmd->cid = cpu_to_le32(scmd_id(scsicmd));
        synchronizecmd->count =
             cpu_to_le32(sizeof(((struct aac_synchronize_reply *)NULL)->data));

        /*
         *      Now send the Fib to the adapter
         */
        status = aac_fib_send(ContainerCommand,
                  cmd_fibcontext,
                  sizeof(struct aac_synchronize),
                  FsaNormal,
                  0, 1,
                  (fib_callback)synchronize_callback,
                  (void *)scsicmd);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING
                "aac_synchronize: aac_fib_send failed with status: %d.\n", status);
        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return SCSI_MLQUEUE_HOST_BUSY;
}

static void aac_start_stop_callback(void *context, struct fib *fibptr)
{
        struct scsi_cmnd *scsicmd = context;

        if (!aac_valid_context(scsicmd, fibptr))
                return;

        BUG_ON(fibptr == NULL);

        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;

        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        scsicmd->scsi_done(scsicmd);
}

static int aac_start_stop(struct scsi_cmnd *scsicmd)
{
        int status;
        struct fib *cmd_fibcontext;
        struct aac_power_management *pmcmd;
        struct scsi_device *sdev = scsicmd->device;
        struct aac_dev *aac = (struct aac_dev *)sdev->host->hostdata;

        if (!(aac->supplement_adapter_info.SupportedOptions2 &
              AAC_OPTION_POWER_MANAGEMENT)) {
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                                  SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);
                return 0;
        }

        if (aac->in_reset)
                return SCSI_MLQUEUE_HOST_BUSY;

        /*
         *      Allocate and initialize a Fib
         */
        cmd_fibcontext = aac_fib_alloc(aac);
        if (!cmd_fibcontext)
                return SCSI_MLQUEUE_HOST_BUSY;

        aac_fib_init(cmd_fibcontext);

        pmcmd = fib_data(cmd_fibcontext);
        pmcmd->command = cpu_to_le32(VM_ContainerConfig);
        pmcmd->type = cpu_to_le32(CT_POWER_MANAGEMENT);
        /* Eject bit ignored, not relevant */
        pmcmd->sub = (scsicmd->cmnd[4] & 1) ?
                cpu_to_le32(CT_PM_START_UNIT) : cpu_to_le32(CT_PM_STOP_UNIT);
        pmcmd->cid = cpu_to_le32(sdev_id(sdev));
        pmcmd->parm = (scsicmd->cmnd[1] & 1) ?
                cpu_to_le32(CT_PM_UNIT_IMMEDIATE) : 0;

        /*
         *      Now send the Fib to the adapter
         */
        status = aac_fib_send(ContainerCommand,
                  cmd_fibcontext,
                  sizeof(struct aac_power_management),
                  FsaNormal,
                  0, 1,
                  (fib_callback)aac_start_stop_callback,
                  (void *)scsicmd);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);
        return SCSI_MLQUEUE_HOST_BUSY;
}

/**
 *      aac_scsi_cmd()          -       Process SCSI command
 *      @scsicmd:               SCSI command block
 *
 *      Emulate a SCSI command and queue the required request for the
 *      aacraid firmware.
 */

int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
{
        u32 cid;
        struct Scsi_Host *host = scsicmd->device->host;
        struct aac_dev *dev = (struct aac_dev *)host->hostdata;
        struct fsa_dev_info *fsa_dev_ptr = dev->fsa_dev;

        if (fsa_dev_ptr == NULL)
                return -1;
        /*
         *      If the bus, id or lun is out of range, return fail
         *      Test does not apply to ID 16, the pseudo id for the controller
         *      itself.
         */
        cid = scmd_id(scsicmd);
        if (cid != host->this_id) {
                if (scmd_channel(scsicmd) == CONTAINER_CHANNEL) {
                        if((cid >= dev->maximum_num_containers) ||
                                        (scsicmd->device->lun != 0)) {
                                scsicmd->result = DID_NO_CONNECT << 16;
                                scsicmd->scsi_done(scsicmd);
                                return 0;
                        }

                        /*
                         *      If the target container doesn't exist, it may have
                         *      been newly created
                         */
                        if (((fsa_dev_ptr[cid].valid & 1) == 0) ||
                          (fsa_dev_ptr[cid].sense_data.sense_key ==
                           NOT_READY)) {
                                switch (scsicmd->cmnd[0]) {
                                case SERVICE_ACTION_IN_16:
                                        if (!(dev->raw_io_interface) ||
                                            !(dev->raw_io_64) ||
                                            ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
                                                break;
                                case INQUIRY:
                                case READ_CAPACITY:
                                case TEST_UNIT_READY:
                                        if (dev->in_reset)
                                                return -1;
                                        return _aac_probe_container(scsicmd,
                                                        aac_probe_container_callback2);
                                default:
                                        break;
                                }
                        }
                } else {  /* check for physical non-dasd devices */
                        if (dev->nondasd_support || expose_physicals ||
                                        dev->jbod) {
                                if (dev->in_reset)
                                        return -1;
                                return aac_send_srb_fib(scsicmd);
                        } else {
                                scsicmd->result = DID_NO_CONNECT << 16;
                                scsicmd->scsi_done(scsicmd);
                                return 0;
                        }
                }
        }
        /*
         * else Command for the controller itself
         */
        else if ((scsicmd->cmnd[0] != INQUIRY) &&       /* only INQUIRY & TUR cmnd supported for controller */
                (scsicmd->cmnd[0] != TEST_UNIT_READY))
        {
                dprintk((KERN_WARNING "Only INQUIRY & TUR command supported for controller, rcvd = 0x%x.\n", scsicmd->cmnd[0]));
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
                set_sense(&dev->fsa_dev[cid].sense_data,
                  ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
                  ASENCODE_INVALID_COMMAND, 0, 0);
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                       min_t(size_t, sizeof(dev->fsa_dev[cid].sense_data),
                             SCSI_SENSE_BUFFERSIZE));
                scsicmd->scsi_done(scsicmd);
                return 0;
        }


        /* Handle commands here that don't really require going out to the adapter */
        switch (scsicmd->cmnd[0]) {
        case INQUIRY:
        {
                struct inquiry_data inq_data;

                dprintk((KERN_DEBUG "INQUIRY command, ID: %d.\n", cid));
                memset(&inq_data, 0, sizeof (struct inquiry_data));

                if ((scsicmd->cmnd[1] & 0x1) && aac_wwn) {
                        char *arr = (char *)&inq_data;

                        /* EVPD bit set */
                        arr[0] = (scmd_id(scsicmd) == host->this_id) ?
                          INQD_PDT_PROC : INQD_PDT_DA;
                        if (scsicmd->cmnd[2] == 0) {
                                /* supported vital product data pages */
                                arr[3] = 2;
                                arr[4] = 0x0;
                                arr[5] = 0x80;
                                arr[1] = scsicmd->cmnd[2];
                                scsi_sg_copy_from_buffer(scsicmd, &inq_data,
                                                         sizeof(inq_data));
                                scsicmd->result = DID_OK << 16 |
                                  COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                        } else if (scsicmd->cmnd[2] == 0x80) {
                                /* unit serial number page */
                                arr[3] = setinqserial(dev, &arr[4],
                                  scmd_id(scsicmd));
                                arr[1] = scsicmd->cmnd[2];
                                scsi_sg_copy_from_buffer(scsicmd, &inq_data,
                                                         sizeof(inq_data));
                                if (aac_wwn != 2)
                                        return aac_get_container_serial(
                                                scsicmd);
                                /* SLES 10 SP1 special */
                                scsicmd->result = DID_OK << 16 |
                                  COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                        } else {
                                /* vpd page not implemented */
                                scsicmd->result = DID_OK << 16 |
                                  COMMAND_COMPLETE << 8 |
                                  SAM_STAT_CHECK_CONDITION;
                                set_sense(&dev->fsa_dev[cid].sense_data,
                                  ILLEGAL_REQUEST, SENCODE_INVALID_CDB_FIELD,
                                  ASENCODE_NO_SENSE, 7, 2);
                                memcpy(scsicmd->sense_buffer,
                                  &dev->fsa_dev[cid].sense_data,
                                  min_t(size_t,
                                        sizeof(dev->fsa_dev[cid].sense_data),
                                        SCSI_SENSE_BUFFERSIZE));
                        }
                        scsicmd->scsi_done(scsicmd);
                        return 0;
                }
                inq_data.inqd_ver = 2;  /* claim compliance to SCSI-2 */
                inq_data.inqd_rdf = 2;  /* A response data format value of two indicates that the data shall be in the format specified in SCSI-2 */
                inq_data.inqd_len = 31;
                /*Format for "pad2" is  RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
                inq_data.inqd_pad2= 0x32 ;       /*WBus16|Sync|CmdQue */
                /*
                 *      Set the Vendor, Product, and Revision Level
                 *      see: <vendor>.c i.e. aac.c
                 */
                if (cid == host->this_id) {
                        setinqstr(dev, (void *) (inq_data.inqd_vid), ARRAY_SIZE(container_types));
                        inq_data.inqd_pdt = INQD_PDT_PROC;      /* Processor device */
                        scsi_sg_copy_from_buffer(scsicmd, &inq_data,
                                                 sizeof(inq_data));
                        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                        scsicmd->scsi_done(scsicmd);
                        return 0;
                }
                if (dev->in_reset)
                        return -1;
                setinqstr(dev, (void *) (inq_data.inqd_vid), fsa_dev_ptr[cid].type);
                inq_data.inqd_pdt = INQD_PDT_DA;        /* Direct/random access device */
                scsi_sg_copy_from_buffer(scsicmd, &inq_data, sizeof(inq_data));
                return aac_get_container_name(scsicmd);
        }
        case SERVICE_ACTION_IN_16:
                if (!(dev->raw_io_interface) ||
                    !(dev->raw_io_64) ||
                    ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
                        break;
        {
                u64 capacity;
                char cp[13];
                unsigned int alloc_len;

                dprintk((KERN_DEBUG "READ CAPACITY_16 command.\n"));
                capacity = fsa_dev_ptr[cid].size - 1;
                cp[0] = (capacity >> 56) & 0xff;
                cp[1] = (capacity >> 48) & 0xff;
                cp[2] = (capacity >> 40) & 0xff;
                cp[3] = (capacity >> 32) & 0xff;
                cp[4] = (capacity >> 24) & 0xff;
                cp[5] = (capacity >> 16) & 0xff;
                cp[6] = (capacity >> 8) & 0xff;
                cp[7] = (capacity >> 0) & 0xff;
                cp[8] = 0;
                cp[9] = 0;
                cp[10] = 2;
                cp[11] = 0;
                cp[12] = 0;

                alloc_len = ((scsicmd->cmnd[10] << 24)
                             + (scsicmd->cmnd[11] << 16)
                             + (scsicmd->cmnd[12] << 8) + scsicmd->cmnd[13]);

                alloc_len = min_t(size_t, alloc_len, sizeof(cp));
                scsi_sg_copy_from_buffer(scsicmd, cp, alloc_len);
                if (alloc_len < scsi_bufflen(scsicmd))
                        scsi_set_resid(scsicmd,
                                       scsi_bufflen(scsicmd) - alloc_len);

                /* Do not cache partition table for arrays */
                scsicmd->device->removable = 1;

                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);

                return 0;
        }

        case READ_CAPACITY:
        {
                u32 capacity;
                char cp[8];

                dprintk((KERN_DEBUG "READ CAPACITY command.\n"));
                if (fsa_dev_ptr[cid].size <= 0x100000000ULL)
                        capacity = fsa_dev_ptr[cid].size - 1;
                else
                        capacity = (u32)-1;

                cp[0] = (capacity >> 24) & 0xff;
                cp[1] = (capacity >> 16) & 0xff;
                cp[2] = (capacity >> 8) & 0xff;
                cp[3] = (capacity >> 0) & 0xff;
                cp[4] = 0;
                cp[5] = 0;
                cp[6] = 2;
                cp[7] = 0;
                scsi_sg_copy_from_buffer(scsicmd, cp, sizeof(cp));
                /* Do not cache partition table for arrays */
                scsicmd->device->removable = 1;
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                  SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);

                return 0;
        }

        case MODE_SENSE:
        {
                char mode_buf[7];
                int mode_buf_length = 4;

                dprintk((KERN_DEBUG "MODE SENSE command.\n"));
                mode_buf[0] = 3;        /* Mode data length */
                mode_buf[1] = 0;        /* Medium type - default */
                mode_buf[2] = 0;        /* Device-specific param,
                                           bit 8: 0/1 = write enabled/protected
                                           bit 4: 0/1 = FUA enabled */
                if (dev->raw_io_interface && ((aac_cache & 5) != 1))
                        mode_buf[2] = 0x10;
                mode_buf[3] = 0;        /* Block descriptor length */
                if (((scsicmd->cmnd[2] & 0x3f) == 8) ||
                  ((scsicmd->cmnd[2] & 0x3f) == 0x3f)) {
                        mode_buf[0] = 6;
                        mode_buf[4] = 8;
                        mode_buf[5] = 1;
                        mode_buf[6] = ((aac_cache & 6) == 2)
                                ? 0 : 0x04; /* WCE */
                        mode_buf_length = 7;
                        if (mode_buf_length > scsicmd->cmnd[4])
                                mode_buf_length = scsicmd->cmnd[4];
                }
                scsi_sg_copy_from_buffer(scsicmd, mode_buf, mode_buf_length);
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);

                return 0;
        }
        case MODE_SENSE_10:
        {
                char mode_buf[11];
                int mode_buf_length = 8;

                dprintk((KERN_DEBUG "MODE SENSE 10 byte command.\n"));
                mode_buf[0] = 0;        /* Mode data length (MSB) */
                mode_buf[1] = 6;        /* Mode data length (LSB) */
                mode_buf[2] = 0;        /* Medium type - default */
                mode_buf[3] = 0;        /* Device-specific param,
                                           bit 8: 0/1 = write enabled/protected
                                           bit 4: 0/1 = FUA enabled */
                if (dev->raw_io_interface && ((aac_cache & 5) != 1))
                        mode_buf[3] = 0x10;
                mode_buf[4] = 0;        /* reserved */
                mode_buf[5] = 0;        /* reserved */
                mode_buf[6] = 0;        /* Block descriptor length (MSB) */
                mode_buf[7] = 0;        /* Block descriptor length (LSB) */
                if (((scsicmd->cmnd[2] & 0x3f) == 8) ||
                  ((scsicmd->cmnd[2] & 0x3f) == 0x3f)) {
                        mode_buf[1] = 9;
                        mode_buf[8] = 8;
                        mode_buf[9] = 1;
                        mode_buf[10] = ((aac_cache & 6) == 2)
                                ? 0 : 0x04; /* WCE */
                        mode_buf_length = 11;
                        if (mode_buf_length > scsicmd->cmnd[8])
                                mode_buf_length = scsicmd->cmnd[8];
                }
                scsi_sg_copy_from_buffer(scsicmd, mode_buf, mode_buf_length);

                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);

                return 0;
        }
        case REQUEST_SENSE:
                dprintk((KERN_DEBUG "REQUEST SENSE command.\n"));
                memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data, sizeof (struct sense_data));
                memset(&dev->fsa_dev[cid].sense_data, 0, sizeof (struct sense_data));
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);
                return 0;

        case ALLOW_MEDIUM_REMOVAL:
                dprintk((KERN_DEBUG "LOCK command.\n"));
                if (scsicmd->cmnd[4])
                        fsa_dev_ptr[cid].locked = 1;
                else
                        fsa_dev_ptr[cid].locked = 0;

                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);
                return 0;
        /*
         *      These commands are all No-Ops
         */
        case TEST_UNIT_READY:
                if (fsa_dev_ptr[cid].sense_data.sense_key == NOT_READY) {
                        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 |
                                SAM_STAT_CHECK_CONDITION;
                        set_sense(&dev->fsa_dev[cid].sense_data,
                                  NOT_READY, SENCODE_BECOMING_READY,
                                  ASENCODE_BECOMING_READY, 0, 0);
                        memcpy(scsicmd->sense_buffer,
                               &dev->fsa_dev[cid].sense_data,
                               min_t(size_t,
                                     sizeof(dev->fsa_dev[cid].sense_data),
                                     SCSI_SENSE_BUFFERSIZE));
                        scsicmd->scsi_done(scsicmd);
                        return 0;
                }
                /* FALLTHRU */
        case RESERVE:
        case RELEASE:
        case REZERO_UNIT:
        case REASSIGN_BLOCKS:
        case SEEK_10:
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                scsicmd->scsi_done(scsicmd);
                return 0;

        case START_STOP:
                return aac_start_stop(scsicmd);
        }

        switch (scsicmd->cmnd[0])
        {
                case READ_6:
                case READ_10:
                case READ_12:
                case READ_16:
                        if (dev->in_reset)
                                return -1;
                        /*
                         *      Hack to keep track of ordinal number of the device that
                         *      corresponds to a container. Needed to convert
                         *      containers to /dev/sd device names
                         */

                        if (scsicmd->request->rq_disk)
                                strlcpy(fsa_dev_ptr[cid].devname,
                                scsicmd->request->rq_disk->disk_name,
                                min(sizeof(fsa_dev_ptr[cid].devname),
                                sizeof(scsicmd->request->rq_disk->disk_name) + 1));

                        return aac_read(scsicmd);

                case WRITE_6:
                case WRITE_10:
                case WRITE_12:
                case WRITE_16:
                        if (dev->in_reset)
                                return -1;
                        return aac_write(scsicmd);

                case SYNCHRONIZE_CACHE:
                        if (((aac_cache & 6) == 6) && dev->cache_protected) {
                                scsicmd->result = DID_OK << 16 |
                                        COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
                                scsicmd->scsi_done(scsicmd);
                                return 0;
                        }
                        /* Issue FIB to tell Firmware to flush it's cache */
                        if ((aac_cache & 6) != 2)
                                return aac_synchronize(scsicmd);
                        /* FALLTHRU */
                default:
                        /*
                         *      Unhandled commands
                         */
                        dprintk((KERN_WARNING "Unhandled SCSI Command: 0x%x.\n", scsicmd->cmnd[0]));
                        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
                        set_sense(&dev->fsa_dev[cid].sense_data,
                          ILLEGAL_REQUEST, SENCODE_INVALID_COMMAND,
                          ASENCODE_INVALID_COMMAND, 0, 0);
                        memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
                                min_t(size_t,
                                      sizeof(dev->fsa_dev[cid].sense_data),
                                      SCSI_SENSE_BUFFERSIZE));
                        scsicmd->scsi_done(scsicmd);
                        return 0;
        }
}

static int query_disk(struct aac_dev *dev, void __user *arg)
{
        struct aac_query_disk qd;
        struct fsa_dev_info *fsa_dev_ptr;

        fsa_dev_ptr = dev->fsa_dev;
        if (!fsa_dev_ptr)
                return -EBUSY;
        if (copy_from_user(&qd, arg, sizeof (struct aac_query_disk)))
                return -EFAULT;
        if (qd.cnum == -1)
                qd.cnum = qd.id;
        else if ((qd.bus == -1) && (qd.id == -1) && (qd.lun == -1))
        {
                if (qd.cnum < 0 || qd.cnum >= dev->maximum_num_containers)
                        return -EINVAL;
                qd.instance = dev->scsi_host_ptr->host_no;
                qd.bus = 0;
                qd.id = CONTAINER_TO_ID(qd.cnum);
                qd.lun = CONTAINER_TO_LUN(qd.cnum);
        }
        else return -EINVAL;

        qd.valid = fsa_dev_ptr[qd.cnum].valid != 0;
        qd.locked = fsa_dev_ptr[qd.cnum].locked;
        qd.deleted = fsa_dev_ptr[qd.cnum].deleted;

        if (fsa_dev_ptr[qd.cnum].devname[0] == '\0')
                qd.unmapped = 1;
        else
                qd.unmapped = 0;

        strlcpy(qd.name, fsa_dev_ptr[qd.cnum].devname,
          min(sizeof(qd.name), sizeof(fsa_dev_ptr[qd.cnum].devname) + 1));

        if (copy_to_user(arg, &qd, sizeof (struct aac_query_disk)))
                return -EFAULT;
        return 0;
}

static int force_delete_disk(struct aac_dev *dev, void __user *arg)
{
        struct aac_delete_disk dd;
        struct fsa_dev_info *fsa_dev_ptr;

        fsa_dev_ptr = dev->fsa_dev;
        if (!fsa_dev_ptr)
                return -EBUSY;

        if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
                return -EFAULT;

        if (dd.cnum >= dev->maximum_num_containers)
                return -EINVAL;
        /*
         *      Mark this container as being deleted.
         */
        fsa_dev_ptr[dd.cnum].deleted = 1;
        /*
         *      Mark the container as no longer valid
         */
        fsa_dev_ptr[dd.cnum].valid = 0;
        return 0;
}

static int delete_disk(struct aac_dev *dev, void __user *arg)
{
        struct aac_delete_disk dd;
        struct fsa_dev_info *fsa_dev_ptr;

        fsa_dev_ptr = dev->fsa_dev;
        if (!fsa_dev_ptr)
                return -EBUSY;

        if (copy_from_user(&dd, arg, sizeof (struct aac_delete_disk)))
                return -EFAULT;

        if (dd.cnum >= dev->maximum_num_containers)
                return -EINVAL;
        /*
         *      If the container is locked, it can not be deleted by the API.
         */
        if (fsa_dev_ptr[dd.cnum].locked)
                return -EBUSY;
        else {
                /*
                 *      Mark the container as no longer being valid.
                 */
                fsa_dev_ptr[dd.cnum].valid = 0;
                fsa_dev_ptr[dd.cnum].devname[0] = '\0';
                return 0;
        }
}

int aac_dev_ioctl(struct aac_dev *dev, int cmd, void __user *arg)
{
        switch (cmd) {
        case FSACTL_QUERY_DISK:
                return query_disk(dev, arg);
        case FSACTL_DELETE_DISK:
                return delete_disk(dev, arg);
        case FSACTL_FORCE_DELETE_DISK:
                return force_delete_disk(dev, arg);
        case FSACTL_GET_CONTAINERS:
                return aac_get_containers(dev);
        default:
                return -ENOTTY;
        }
}

/**
 *
 * aac_srb_callback
 * @context: the context set in the fib - here it is scsi cmd
 * @fibptr: pointer to the fib
 *
 * Handles the completion of a scsi command to a non dasd device
 *
 */

static void aac_srb_callback(void *context, struct fib * fibptr)
{
        struct aac_dev *dev;
        struct aac_srb_reply *srbreply;
        struct scsi_cmnd *scsicmd;

        scsicmd = (struct scsi_cmnd *) context;

        if (!aac_valid_context(scsicmd, fibptr))
                return;

        BUG_ON(fibptr == NULL);

        dev = fibptr->dev;

        srbreply = (struct aac_srb_reply *) fib_data(fibptr);

        scsicmd->sense_buffer[0] = '\0';  /* Initialize sense valid flag to false */

        if (fibptr->flags & FIB_CONTEXT_FLAG_FASTRESP) {
                /* fast response */
                srbreply->srb_status = cpu_to_le32(SRB_STATUS_SUCCESS);
                srbreply->scsi_status = cpu_to_le32(SAM_STAT_GOOD);
        } else {
                /*
                 *      Calculate resid for sg
                 */
                scsi_set_resid(scsicmd, scsi_bufflen(scsicmd)
                                   - le32_to_cpu(srbreply->data_xfer_length));
        }

        scsi_dma_unmap(scsicmd);

        /* expose physical device if expose_physicald flag is on */
        if (scsicmd->cmnd[0] == INQUIRY && !(scsicmd->cmnd[1] & 0x01)
          && expose_physicals > 0)
                aac_expose_phy_device(scsicmd);

        /*
         * First check the fib status
         */

        if (le32_to_cpu(srbreply->status) != ST_OK){
                int len;
                printk(KERN_WARNING "aac_srb_callback: srb failed, status = %d\n", le32_to_cpu(srbreply->status));
                len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
                            SCSI_SENSE_BUFFERSIZE);
                scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
                memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
        }

        /*
         * Next check the srb status
         */
        switch( (le32_to_cpu(srbreply->srb_status))&0x3f){
        case SRB_STATUS_ERROR_RECOVERY:
        case SRB_STATUS_PENDING:
        case SRB_STATUS_SUCCESS:
                scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
                break;
        case SRB_STATUS_DATA_OVERRUN:
                switch(scsicmd->cmnd[0]){
                case  READ_6:
                case  WRITE_6:
                case  READ_10:
                case  WRITE_10:
                case  READ_12:
                case  WRITE_12:
                case  READ_16:
                case  WRITE_16:
                        if (le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow) {
                                printk(KERN_WARNING"aacraid: SCSI CMD underflow\n");
                        } else {
                                printk(KERN_WARNING"aacraid: SCSI CMD Data Overrun\n");
                        }
                        scsicmd->result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
                        break;
                case INQUIRY: {
                        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
                        break;
                }
                default:
                        scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
                        break;
                }
                break;
        case SRB_STATUS_ABORTED:
                scsicmd->result = DID_ABORT << 16 | ABORT << 8;
                break;
        case SRB_STATUS_ABORT_FAILED:
                // Not sure about this one - but assuming the hba was trying to abort for some reason
                scsicmd->result = DID_ERROR << 16 | ABORT << 8;
                break;
        case SRB_STATUS_PARITY_ERROR:
                scsicmd->result = DID_PARITY << 16 | MSG_PARITY_ERROR << 8;
                break;
        case SRB_STATUS_NO_DEVICE:
        case SRB_STATUS_INVALID_PATH_ID:
        case SRB_STATUS_INVALID_TARGET_ID:
        case SRB_STATUS_INVALID_LUN:
        case SRB_STATUS_SELECTION_TIMEOUT:
                scsicmd->result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
                break;

        case SRB_STATUS_COMMAND_TIMEOUT:
        case SRB_STATUS_TIMEOUT:
                scsicmd->result = DID_TIME_OUT << 16 | COMMAND_COMPLETE << 8;
                break;

        case SRB_STATUS_BUSY:
                scsicmd->result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
                break;

        case SRB_STATUS_BUS_RESET:
                scsicmd->result = DID_RESET << 16 | COMMAND_COMPLETE << 8;
                break;

        case SRB_STATUS_MESSAGE_REJECTED:
                scsicmd->result = DID_ERROR << 16 | MESSAGE_REJECT << 8;
                break;
        case SRB_STATUS_REQUEST_FLUSHED:
        case SRB_STATUS_ERROR:
        case SRB_STATUS_INVALID_REQUEST:
        case SRB_STATUS_REQUEST_SENSE_FAILED:
        case SRB_STATUS_NO_HBA:
        case SRB_STATUS_UNEXPECTED_BUS_FREE:
        case SRB_STATUS_PHASE_SEQUENCE_FAILURE:
        case SRB_STATUS_BAD_SRB_BLOCK_LENGTH:
        case SRB_STATUS_DELAYED_RETRY:
        case SRB_STATUS_BAD_FUNCTION:
        case SRB_STATUS_NOT_STARTED:
        case SRB_STATUS_NOT_IN_USE:
        case SRB_STATUS_FORCE_ABORT:
        case SRB_STATUS_DOMAIN_VALIDATION_FAIL:
        default:
#ifdef AAC_DETAILED_STATUS_INFO
                printk("aacraid: SRB ERROR(%u) %s scsi cmd 0x%x - scsi status 0x%x\n",
                        le32_to_cpu(srbreply->srb_status) & 0x3F,
                        aac_get_status_string(
                                le32_to_cpu(srbreply->srb_status) & 0x3F),
                        scsicmd->cmnd[0],
                        le32_to_cpu(srbreply->scsi_status));
#endif
                if ((scsicmd->cmnd[0] == ATA_12)
                  || (scsicmd->cmnd[0] == ATA_16)) {
                        if (scsicmd->cmnd[2] & (0x01 << 5)) {
                                scsicmd->result = DID_OK << 16
                                                | COMMAND_COMPLETE << 8;
                                break;
                        } else {
                                scsicmd->result = DID_ERROR << 16
                                                | COMMAND_COMPLETE << 8;
                                break;
                        }
                } else {
                        scsicmd->result = DID_ERROR << 16
                                        | COMMAND_COMPLETE << 8;
                        break;
                }
        }
        if (le32_to_cpu(srbreply->scsi_status) == SAM_STAT_CHECK_CONDITION) {
                int len;
                scsicmd->result |= SAM_STAT_CHECK_CONDITION;
                len = min_t(u32, le32_to_cpu(srbreply->sense_data_size),
                            SCSI_SENSE_BUFFERSIZE);
#ifdef AAC_DETAILED_STATUS_INFO
                printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n",
                                        le32_to_cpu(srbreply->status), len);
#endif
                memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
        }
        /*
         * OR in the scsi status (already shifted up a bit)
         */
        scsicmd->result |= le32_to_cpu(srbreply->scsi_status);

        aac_fib_complete(fibptr);
        aac_fib_free(fibptr);
        scsicmd->scsi_done(scsicmd);
}

/**
 *
 * aac_send_scb_fib
 * @scsicmd: the scsi command block
 *
 * This routine will form a FIB and fill in the aac_srb from the
 * scsicmd passed in.
 */

static int aac_send_srb_fib(struct scsi_cmnd* scsicmd)
{
        struct fib* cmd_fibcontext;
        struct aac_dev* dev;
        int status;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;
        if (scmd_id(scsicmd) >= dev->maximum_num_physicals ||
                        scsicmd->device->lun > 7) {
                scsicmd->result = DID_NO_CONNECT << 16;
                scsicmd->scsi_done(scsicmd);
                return 0;
        }

        /*
         *      Allocate and initialize a Fib then setup a BlockWrite command
         */
        if (!(cmd_fibcontext = aac_fib_alloc(dev))) {
                return -1;
        }
        status = aac_adapter_scsi(cmd_fibcontext, scsicmd);

        /*
         *      Check that the command queued to the controller
         */
        if (status == -EINPROGRESS) {
                scsicmd->SCp.phase = AAC_OWNER_FIRMWARE;
                return 0;
        }

        printk(KERN_WARNING "aac_srb: aac_fib_send failed with status: %d\n", status);
        aac_fib_complete(cmd_fibcontext);
        aac_fib_free(cmd_fibcontext);

        return -1;
}

static long aac_build_sg(struct scsi_cmnd *scsicmd, struct sgmap *psg)
{
        struct aac_dev *dev;
        unsigned long byte_count = 0;
        int nseg;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;
        // Get rid of old data
        psg->count = 0;
        psg->sg[0].addr = 0;
        psg->sg[0].count = 0;

        nseg = scsi_dma_map(scsicmd);
        if (nseg < 0)
                return nseg;
        if (nseg) {
                struct scatterlist *sg;
                int i;

                psg->count = cpu_to_le32(nseg);

                scsi_for_each_sg(scsicmd, sg, nseg, i) {
                        psg->sg[i].addr = cpu_to_le32(sg_dma_address(sg));
                        psg->sg[i].count = cpu_to_le32(sg_dma_len(sg));
                        byte_count += sg_dma_len(sg);
                }
                /* hba wants the size to be exact */
                if (byte_count > scsi_bufflen(scsicmd)) {
                        u32 temp = le32_to_cpu(psg->sg[i-1].count) -
                                (byte_count - scsi_bufflen(scsicmd));
                        psg->sg[i-1].count = cpu_to_le32(temp);
                        byte_count = scsi_bufflen(scsicmd);
                }
                /* Check for command underflow */
                if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
                        printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
                                        byte_count, scsicmd->underflow);
                }
        }
        return byte_count;
}


static long aac_build_sg64(struct scsi_cmnd *scsicmd, struct sgmap64 *psg)
{
        struct aac_dev *dev;
        unsigned long byte_count = 0;
        u64 addr;
        int nseg;

        dev = (struct aac_dev *)scsicmd->device->host->hostdata;
        // Get rid of old data
        psg->count = 0;
        psg->sg[0].addr[0] = 0;
        psg->sg[0].addr[1] = 0;
        psg->sg[0].count = 0;

        nseg = scsi_dma_map(scsicmd);
        if (nseg < 0)
                return nseg;
        if (nseg) {
                struct scatterlist *sg;
                int i;

                scsi_for_each_sg(scsicmd, sg, nseg, i) {
                        int count = sg_dma_len(sg);
                        addr = sg_dma_address(sg);
                        psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
                        psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
                        psg->sg[i].count = cpu_to_le32(count);
                        byte_count += count;
                }
                psg->count = cpu_to_le32(nseg);
                /* hba wants the size to be exact */
                if (byte_count > scsi_bufflen(scsicmd)) {
                        u32 temp = le32_to_cpu(psg->sg[i-1].count) -
                                (byte_count - scsi_bufflen(scsicmd));
                        psg->sg[i-1].count = cpu_to_le32(temp);
                        byte_count = scsi_bufflen(scsicmd);
                }
                /* Check for command underflow */
                if(scsicmd->underflow && (byte_count < scsicmd->underflow)){
                        printk(KERN_WARNING"aacraid: cmd len %08lX cmd underflow %08X\n",
                                        byte_count, scsicmd->underflow);
                }
        }
        return byte_count;
}

static long aac_build_sgraw(struct scsi_cmnd *scsicmd, struct sgmapraw *psg)
{
        unsigned long byte_count = 0;