text: /*
   *	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 <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 unsigned long aac_build_sg(struct scsi_cmnd* scsicmd, struct sgmap* sgmap);
  static unsigned long aac_build_sg64(struct scsi_cmnd* scsicmd, struct sgmap64* psg);
  static unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg);
  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;
  
  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)
  {
  	u16 fibsize;
  	struct aac_raw_io *readcmd;
  	aac_fib_init(fib);
  	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(IO_TYPE_READ);
  	readcmd->bpTotal = 0;
  	readcmd->bpComplete = 0;
  
  	aac_build_sgraw(cmd, &readcmd->sg);
  	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(ContainerRawIo,
  			  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;
  	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;
  
  	aac_build_sg64(cmd, &readcmd->sg);
  	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;
  	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);
  
  	aac_build_sg(cmd, &readcmd->sg);
  	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)
  {
  	u16 fibsize;
  	struct aac_raw_io *writecmd;
  	aac_fib_init(fib);
  	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(IO_TYPE_WRITE|IO_SUREWRITE) :
  		cpu_to_le16(IO_TYPE_WRITE);
  	writecmd->bpTotal = 0;
  	writecmd->bpComplete = 0;
  
  	aac_build_sgraw(cmd, &writecmd->sg);
  	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(ContainerRawIo,
  			  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;
  	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;
  
  	aac_build_sg64(cmd, &writecmd->sg);
  	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;
  	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 */
  
  	aac_build_sg(cmd, &writecmd->sg);
  	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);
  
  	aac_build_sg64(cmd, (struct sgmap64*) &srbcmd->sg);
  	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);
  
  	aac_build_sg(cmd, (struct sgmap*)&srbcmd->sg);
  	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_TYPE1)
  			dev->adapter_info.options |= AAC_OPT_NEW_COMM;
  		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:
  					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:
  		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 */
  	/*
  	 *	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 unsigned 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);
  	BUG_ON(nseg < 0);
  	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 unsigned 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);
  	BUG_ON(nseg < 0);
  	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 unsigned long aac_build_sgraw(struct scsi_cmnd* scsicmd, struct sgmapraw* psg)
  {
  	unsigned long byte_count = 0;
  	int nseg;
  
  	// Get rid of old data
  	psg->count = 0;
  	psg->sg[0].next = 0;
  	psg->sg[0].prev = 0;
  	psg->sg[0].addr[0] = 0;
  	psg->sg[0].addr[1] = 0;
  	psg->sg[0].count = 0;
  	psg->sg[0].flags = 0;
  
  	nseg = scsi_dma_map(scsicmd);
  	BUG_ON(nseg < 0);
  	if (nseg) {
  		struct scatterlist *sg;
  		int i;
  
  		scsi_for_each_sg(scsicmd, sg, nseg, i) {
  			int count = sg_dma_len(sg);
  			u64 addr = sg_dma_address(sg);
  			psg->sg[i].next = 0;
  			psg->sg[i].prev = 0;
  			psg->sg[i].addr[1] = cpu_to_le32((u32)(addr>>32));
  			psg->sg[i].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
  			psg->sg[i].count = cpu_to_le32(count);
  			psg->sg[i].flags = 0;
  			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;
  }
  
  #ifdef AAC_DETAILED_STATUS_INFO
  
  struct aac_srb_status_info {
  	u32	status;
  	char	*str;
  };
  
  
  static struct aac_srb_status_info srb_status_info[] = {
  	{ SRB_STATUS_PENDING,		"Pending Status"},
  	{ SRB_STATUS_SUCCESS,		"Success"},
  	{ SRB_STATUS_ABORTED,		"Aborted Command"},
  	{ SRB_STATUS_ABORT_FAILED,	"Abort Failed"},
  	{ SRB_STATUS_ERROR,		"Error Event"},
  	{ SRB_STATUS_BUSY,		"Device Busy"},
  	{ SRB_STATUS_INVALID_REQUEST,	"Invalid Request"},
  	{ SRB_STATUS_INVALID_PATH_ID,	"Invalid Path ID"},
  	{ SRB_STATUS_NO_DEVICE,		"No Device"},
  	{ SRB_STATUS_TIMEOUT,		"Timeout"},
  	{ SRB_STATUS_SELECTION_TIMEOUT,	"Selection Timeout"},
  	{ SRB_STATUS_COMMAND_TIMEOUT,	"Command Timeout"},
  	{ SRB_STATUS_MESSAGE_REJECTED,	"Message Rejected"},
  	{ SRB_STATUS_BUS_RESET,		"Bus Reset"},
  	{ SRB_STATUS_PARITY_ERROR,	"Parity Error"},
  	{ SRB_STATUS_REQUEST_SENSE_FAILED,"Request Sense Failed"},
  	{ SRB_STATUS_NO_HBA,		"No HBA"},
  	{ SRB_STATUS_DATA_OVERRUN,	"Data Overrun/Data Underrun"},
  	{ SRB_STATUS_UNEXPECTED_BUS_FREE,"Unexpected Bus Free"},
  	{ SRB_STATUS_PHASE_SEQUENCE_FAILURE,"Phase Error"},
  	{ SRB_STATUS_BAD_SRB_BLOCK_LENGTH,"Bad Srb Block Length"},
  	{ SRB_STATUS_REQUEST_FLUSHED,	"Request Flushed"},
  	{ SRB_STATUS_DELAYED_RETRY,	"Delayed Retry"},
  	{ SRB_STATUS_INVALID_LUN,	"Invalid LUN"},
  	{ SRB_STATUS_INVALID_TARGET_ID,	"Invalid TARGET ID"},
  	{ SRB_STATUS_BAD_FUNCTION,	"Bad Function"},
  	{ SRB_STATUS_ERROR_RECOVERY,	"Error Recovery"},
  	{ SRB_STATUS_NOT_STARTED,	"Not Started"},
  	{ SRB_STATUS_NOT_IN_USE,	"Not In Use"},
  	{ SRB_STATUS_FORCE_ABORT,	"Force Abort"},
  	{ SRB_STATUS_DOMAIN_VALIDATION_FAIL,"Domain Validation Failure"},
  	{ 0xff,				"Unknown Error"}
  };
  
  char *aac_get_status_string(u32 status)
  {
  	int i;
  
  	for (i = 0; i < ARRAY_SIZE(srb_status_info); i++)
  		if (srb_status_info[i].status == status)
  			return srb_status_info[i].str;
  
  	return "Bad Status Code";
  }
  
  #endif
  