Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 7099 insertions, 0 deletions

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
new file mode 100644
index 00000000000..423bbf2000d
--- /dev/null
+++ b/drivers/block/DAC960.c
@@ -0,0 +1,7099 @@
+/*
+
+  Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
+
+  Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
+
+  This program is free software; you may redistribute and/or modify it under
+  the terms of the GNU General Public License Version 2 as published by the
+  Free Software Foundation.
+
+  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 complete details.
+
+*/
+
+
+#define DAC960_DriverVersion			"2.5.47"
+#define DAC960_DriverDate			"14 November 2002"
+
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/miscdevice.h>
+#include <linux/blkdev.h>
+#include <linux/bio.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/genhd.h>
+#include <linux/hdreg.h>
+#include <linux/blkpg.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/reboot.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include "DAC960.h"
+
+#define DAC960_GAM_MINOR	252
+
+
+static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
+static int DAC960_ControllerCount;
+static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
+
+static long disk_size(DAC960_Controller_T *p, int drive_nr)
+{
+	if (p->FirmwareType == DAC960_V1_Controller) {
+		if (drive_nr >= p->LogicalDriveCount)
+			return 0;
+		return p->V1.LogicalDriveInformation[drive_nr].
+			LogicalDriveSize;
+	} else {
+		DAC960_V2_LogicalDeviceInfo_T *i =
+			p->V2.LogicalDeviceInformation[drive_nr];
+		if (i == NULL)
+			return 0;
+		return i->ConfigurableDeviceSize;
+	}
+}
+
+static int DAC960_open(struct inode *inode, struct file *file)
+{
+	struct gendisk *disk = inode->i_bdev->bd_disk;
+	DAC960_Controller_T *p = disk->queue->queuedata;
+	int drive_nr = (long)disk->private_data;
+
+	if (p->FirmwareType == DAC960_V1_Controller) {
+		if (p->V1.LogicalDriveInformation[drive_nr].
+		    LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
+			return -ENXIO;
+	} else {
+		DAC960_V2_LogicalDeviceInfo_T *i =
+			p->V2.LogicalDeviceInformation[drive_nr];
+		if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
+			return -ENXIO;
+	}
+
+	check_disk_change(inode->i_bdev);
+
+	if (!get_capacity(p->disks[drive_nr]))
+		return -ENXIO;
+	return 0;
+}
+
+static int DAC960_ioctl(struct inode *inode, struct file *file,
+			unsigned int cmd, unsigned long arg)
+{
+	struct gendisk *disk = inode->i_bdev->bd_disk;
+	DAC960_Controller_T *p = disk->queue->queuedata;
+	int drive_nr = (long)disk->private_data;
+	struct hd_geometry g;
+	struct hd_geometry __user *loc = (struct hd_geometry __user *)arg;
+
+	if (cmd != HDIO_GETGEO || !loc)
+		return -EINVAL;
+
+	if (p->FirmwareType == DAC960_V1_Controller) {
+		g.heads = p->V1.GeometryTranslationHeads;
+		g.sectors = p->V1.GeometryTranslationSectors;
+		g.cylinders = p->V1.LogicalDriveInformation[drive_nr].
+			LogicalDriveSize / (g.heads * g.sectors);
+	} else {
+		DAC960_V2_LogicalDeviceInfo_T *i =
+			p->V2.LogicalDeviceInformation[drive_nr];
+		switch (i->DriveGeometry) {
+		case DAC960_V2_Geometry_128_32:
+			g.heads = 128;
+			g.sectors = 32;
+			break;
+		case DAC960_V2_Geometry_255_63:
+			g.heads = 255;
+			g.sectors = 63;
+			break;
+		default:
+			DAC960_Error("Illegal Logical Device Geometry %d\n",
+					p, i->DriveGeometry);
+			return -EINVAL;
+		}
+
+		g.cylinders = i->ConfigurableDeviceSize / (g.heads * g.sectors);
+	}
+	
+	g.start = get_start_sect(inode->i_bdev);
+
+	return copy_to_user(loc, &g, sizeof g) ? -EFAULT : 0; 
+}
+
+static int DAC960_media_changed(struct gendisk *disk)
+{
+	DAC960_Controller_T *p = disk->queue->queuedata;
+	int drive_nr = (long)disk->private_data;
+
+	if (!p->LogicalDriveInitiallyAccessible[drive_nr])
+		return 1;
+	return 0;
+}
+
+static int DAC960_revalidate_disk(struct gendisk *disk)
+{
+	DAC960_Controller_T *p = disk->queue->queuedata;
+	int unit = (long)disk->private_data;
+
+	set_capacity(disk, disk_size(p, unit));
+	return 0;
+}
+
+static struct block_device_operations DAC960_BlockDeviceOperations = {
+	.owner			= THIS_MODULE,
+	.open			= DAC960_open,
+	.ioctl			= DAC960_ioctl,
+	.media_changed		= DAC960_media_changed,
+	.revalidate_disk	= DAC960_revalidate_disk,
+};
+
+
+/*
+  DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
+  Copyright Notice, and Electronic Mail Address.
+*/
+
+static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
+{
+  DAC960_Announce("***** DAC960 RAID Driver Version "
+		  DAC960_DriverVersion " of "
+		  DAC960_DriverDate " *****\n", Controller);
+  DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
+		  "<lnz@dandelion.com>\n", Controller);
+}
+
+
+/*
+  DAC960_Failure prints a standardized error message, and then returns false.
+*/
+
+static boolean DAC960_Failure(DAC960_Controller_T *Controller,
+			      unsigned char *ErrorMessage)
+{
+  DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
+	       Controller);
+  if (Controller->IO_Address == 0)
+    DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
+		 "PCI Address 0x%X\n", Controller,
+		 Controller->Bus, Controller->Device,
+		 Controller->Function, Controller->PCI_Address);
+  else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
+		    "0x%X PCI Address 0x%X\n", Controller,
+		    Controller->Bus, Controller->Device,
+		    Controller->Function, Controller->IO_Address,
+		    Controller->PCI_Address);
+  DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
+  return false;
+}
+
+/*
+  init_dma_loaf() and slice_dma_loaf() are helper functions for
+  aggregating the dma-mapped memory for a well-known collection of
+  data structures that are of different lengths.
+
+  These routines don't guarantee any alignment.  The caller must
+  include any space needed for alignment in the sizes of the structures
+  that are passed in.
+ */
+
+static boolean init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
+								 size_t len)
+{
+	void *cpu_addr;
+	dma_addr_t dma_handle;
+
+	cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
+	if (cpu_addr == NULL)
+		return false;
+	
+	loaf->cpu_free = loaf->cpu_base = cpu_addr;
+	loaf->dma_free =loaf->dma_base = dma_handle;
+	loaf->length = len;
+	memset(cpu_addr, 0, len);
+	return true;
+}
+
+static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
+					dma_addr_t *dma_handle)
+{
+	void *cpu_end = loaf->cpu_free + len;
+	void *cpu_addr = loaf->cpu_free;
+
+	if (cpu_end > loaf->cpu_base + loaf->length)
+		BUG();
+	*dma_handle = loaf->dma_free;
+	loaf->cpu_free = cpu_end;
+	loaf->dma_free += len;
+	return cpu_addr;
+}
+
+static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
+{
+	if (loaf_handle->cpu_base != NULL)
+		pci_free_consistent(dev, loaf_handle->length,
+			loaf_handle->cpu_base, loaf_handle->dma_base);
+}
+
+
+/*
+  DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
+  data structures for Controller.  It returns true on success and false on
+  failure.
+*/
+
+static boolean DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
+{
+  int CommandAllocationLength, CommandAllocationGroupSize;
+  int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
+  void *AllocationPointer = NULL;
+  void *ScatterGatherCPU = NULL;
+  dma_addr_t ScatterGatherDMA;
+  struct pci_pool *ScatterGatherPool;
+  void *RequestSenseCPU = NULL;
+  dma_addr_t RequestSenseDMA;
+  struct pci_pool *RequestSensePool = NULL;
+
+  if (Controller->FirmwareType == DAC960_V1_Controller)
+    {
+      CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
+      CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
+      ScatterGatherPool = pci_pool_create("DAC960_V1_ScatterGather",
+		Controller->PCIDevice,
+	DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
+	sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
+      if (ScatterGatherPool == NULL)
+	    return DAC960_Failure(Controller,
+			"AUXILIARY STRUCTURE CREATION (SG)");
+      Controller->ScatterGatherPool = ScatterGatherPool;
+    }
+  else
+    {
+      CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
+      CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
+      ScatterGatherPool = pci_pool_create("DAC960_V2_ScatterGather",
+		Controller->PCIDevice,
+	DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
+	sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
+      if (ScatterGatherPool == NULL)
+	    return DAC960_Failure(Controller,
+			"AUXILIARY STRUCTURE CREATION (SG)");
+      RequestSensePool = pci_pool_create("DAC960_V2_RequestSense",
+		Controller->PCIDevice, sizeof(DAC960_SCSI_RequestSense_T),
+		sizeof(int), 0);
+      if (RequestSensePool == NULL) {
+	    pci_pool_destroy(ScatterGatherPool);
+	    return DAC960_Failure(Controller,
+			"AUXILIARY STRUCTURE CREATION (SG)");
+      }
+      Controller->ScatterGatherPool = ScatterGatherPool;
+      Controller->V2.RequestSensePool = RequestSensePool;
+    }
+  Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
+  Controller->FreeCommands = NULL;
+  for (CommandIdentifier = 1;
+       CommandIdentifier <= Controller->DriverQueueDepth;
+       CommandIdentifier++)
+    {
+      DAC960_Command_T *Command;
+      if (--CommandsRemaining <= 0)
+	{
+	  CommandsRemaining =
+		Controller->DriverQueueDepth - CommandIdentifier + 1;
+	  if (CommandsRemaining > CommandAllocationGroupSize)
+		CommandsRemaining = CommandAllocationGroupSize;
+	  CommandGroupByteCount =
+		CommandsRemaining * CommandAllocationLength;
+	  AllocationPointer = kmalloc(CommandGroupByteCount, GFP_ATOMIC);
+	  if (AllocationPointer == NULL)
+		return DAC960_Failure(Controller,
+					"AUXILIARY STRUCTURE CREATION");
+	  memset(AllocationPointer, 0, CommandGroupByteCount);
+	 }
+      Command = (DAC960_Command_T *) AllocationPointer;
+      AllocationPointer += CommandAllocationLength;
+      Command->CommandIdentifier = CommandIdentifier;
+      Command->Controller = Controller;
+      Command->Next = Controller->FreeCommands;
+      Controller->FreeCommands = Command;
+      Controller->Commands[CommandIdentifier-1] = Command;
+      ScatterGatherCPU = pci_pool_alloc(ScatterGatherPool, SLAB_ATOMIC,
+							&ScatterGatherDMA);
+      if (ScatterGatherCPU == NULL)
+	  return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
+
+      if (RequestSensePool != NULL) {
+  	  RequestSenseCPU = pci_pool_alloc(RequestSensePool, SLAB_ATOMIC,
+						&RequestSenseDMA);
+  	  if (RequestSenseCPU == NULL) {
+                pci_pool_free(ScatterGatherPool, ScatterGatherCPU,
+                                ScatterGatherDMA);
+    		return DAC960_Failure(Controller,
+					"AUXILIARY STRUCTURE CREATION");
+	  }
+        }
+     if (Controller->FirmwareType == DAC960_V1_Controller) {
+        Command->cmd_sglist = Command->V1.ScatterList;
+	Command->V1.ScatterGatherList =
+		(DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
+	Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
+      } else {
+        Command->cmd_sglist = Command->V2.ScatterList;
+	Command->V2.ScatterGatherList =
+		(DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
+	Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
+	Command->V2.RequestSense =
+				(DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
+	Command->V2.RequestSenseDMA = RequestSenseDMA;
+      }
+    }
+  return true;
+}
+
+
+/*
+  DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
+  structures for Controller.
+*/
+
+static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
+{
+  int i;
+  struct pci_pool *ScatterGatherPool = Controller->ScatterGatherPool;
+  struct pci_pool *RequestSensePool = NULL;
+  void *ScatterGatherCPU;
+  dma_addr_t ScatterGatherDMA;
+  void *RequestSenseCPU;
+  dma_addr_t RequestSenseDMA;
+  DAC960_Command_T *CommandGroup = NULL;
+  
+
+  if (Controller->FirmwareType == DAC960_V2_Controller)
+        RequestSensePool = Controller->V2.RequestSensePool;
+
+  Controller->FreeCommands = NULL;
+  for (i = 0; i < Controller->DriverQueueDepth; i++)
+    {
+      DAC960_Command_T *Command = Controller->Commands[i];
+
+      if (Command == NULL)
+	  continue;
+
+      if (Controller->FirmwareType == DAC960_V1_Controller) {
+	  ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
+	  ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
+	  RequestSenseCPU = NULL;
+	  RequestSenseDMA = (dma_addr_t)0;
+      } else {
+          ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
+	  ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
+	  RequestSenseCPU = (void *)Command->V2.RequestSense;
+	  RequestSenseDMA = Command->V2.RequestSenseDMA;
+      }
+      if (ScatterGatherCPU != NULL)
+          pci_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
+      if (RequestSenseCPU != NULL)
+          pci_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
+
+      if ((Command->CommandIdentifier
+	   % Controller->CommandAllocationGroupSize) == 1) {
+	   /*
+	    * We can't free the group of commands until all of the
+	    * request sense and scatter gather dma structures are free.
+            * Remember the beginning of the group, but don't free it
+	    * until we've reached the beginning of the next group.
+	    */
+	   if (CommandGroup != NULL)
+		kfree(CommandGroup);
+	    CommandGroup = Command;
+      }
+      Controller->Commands[i] = NULL;
+    }
+  if (CommandGroup != NULL)
+      kfree(CommandGroup);
+
+  if (Controller->CombinedStatusBuffer != NULL)
+    {
+      kfree(Controller->CombinedStatusBuffer);
+      Controller->CombinedStatusBuffer = NULL;
+      Controller->CurrentStatusBuffer = NULL;
+    }
+
+  if (ScatterGatherPool != NULL)
+  	pci_pool_destroy(ScatterGatherPool);
+  if (Controller->FirmwareType == DAC960_V1_Controller) return;
+
+  if (RequestSensePool != NULL)
+	pci_pool_destroy(RequestSensePool);
+
+  for (i = 0; i < DAC960_MaxLogicalDrives; i++)
+    if (Controller->V2.LogicalDeviceInformation[i] != NULL)
+      {
+	kfree(Controller->V2.LogicalDeviceInformation[i]);
+	Controller->V2.LogicalDeviceInformation[i] = NULL;
+      }
+
+  for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
+    {
+      if (Controller->V2.PhysicalDeviceInformation[i] != NULL)
+	{
+	  kfree(Controller->V2.PhysicalDeviceInformation[i]);
+	  Controller->V2.PhysicalDeviceInformation[i] = NULL;
+	}
+      if (Controller->V2.InquiryUnitSerialNumber[i] != NULL)
+	{
+	  kfree(Controller->V2.InquiryUnitSerialNumber[i]);
+	  Controller->V2.InquiryUnitSerialNumber[i] = NULL;
+	}
+    }
+}
+
+
+/*
+  DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
+  Firmware Controllers.
+*/
+
+static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
+{
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
+  Command->V1.CommandStatus = 0;
+}
+
+
+/*
+  DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
+  Firmware Controllers.
+*/
+
+static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
+{
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
+  Command->V2.CommandStatus = 0;
+}
+
+
+/*
+  DAC960_AllocateCommand allocates a Command structure from Controller's
+  free list.  During driver initialization, a special initialization command
+  has been placed on the free list to guarantee that command allocation can
+  never fail.
+*/
+
+static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
+						       *Controller)
+{
+  DAC960_Command_T *Command = Controller->FreeCommands;
+  if (Command == NULL) return NULL;
+  Controller->FreeCommands = Command->Next;
+  Command->Next = NULL;
+  return Command;
+}
+
+
+/*
+  DAC960_DeallocateCommand deallocates Command, returning it to Controller's
+  free list.
+*/
+
+static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+
+  Command->Request = NULL;
+  Command->Next = Controller->FreeCommands;
+  Controller->FreeCommands = Command;
+}
+
+
+/*
+  DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
+*/
+
+static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
+{
+  spin_unlock_irq(&Controller->queue_lock);
+  __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
+  spin_lock_irq(&Controller->queue_lock);
+}
+
+
+/*
+  DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
+*/
+
+static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
+    Controller->V2.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
+  Controller->V2.PreviousCommandMailbox2 =
+    Controller->V2.PreviousCommandMailbox1;
+  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
+    NextCommandMailbox = Controller->V2.FirstCommandMailbox;
+  Controller->V2.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
+*/
+
+static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandMailbox_T *NextCommandMailbox =
+    Controller->V2.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
+  Controller->V2.PreviousCommandMailbox2 =
+    Controller->V2.PreviousCommandMailbox1;
+  Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
+    NextCommandMailbox = Controller->V2.FirstCommandMailbox;
+  Controller->V2.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
+  Controllers with Dual Mode Firmware.
+*/
+
+static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
+    Controller->V1.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
+  Controller->V1.PreviousCommandMailbox2 =
+    Controller->V1.PreviousCommandMailbox1;
+  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
+    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
+  Controller->V1.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
+  Controllers with Single Mode Firmware.
+*/
+
+static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
+    Controller->V1.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
+  Controller->V1.PreviousCommandMailbox2 =
+    Controller->V1.PreviousCommandMailbox1;
+  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
+    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
+  Controller->V1.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
+  Controllers with Dual Mode Firmware.
+*/
+
+static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
+    Controller->V1.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
+  Controller->V1.PreviousCommandMailbox2 =
+    Controller->V1.PreviousCommandMailbox1;
+  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
+    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
+  Controller->V1.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
+  Controllers with Single Mode Firmware.
+*/
+
+static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandMailbox_T *NextCommandMailbox =
+    Controller->V1.NextCommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
+  if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
+      Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
+    DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
+  Controller->V1.PreviousCommandMailbox2 =
+    Controller->V1.PreviousCommandMailbox1;
+  Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
+  if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
+    NextCommandMailbox = Controller->V1.FirstCommandMailbox;
+  Controller->V1.NextCommandMailbox = NextCommandMailbox;
+}
+
+
+/*
+  DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
+*/
+
+static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
+    udelay(1);
+  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
+  DAC960_PD_NewCommand(ControllerBaseAddress);
+}
+
+
+/*
+  DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
+*/
+
+static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
+  switch (CommandMailbox->Common.CommandOpcode)
+    {
+    case DAC960_V1_Enquiry:
+      CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
+      break;
+    case DAC960_V1_GetDeviceState:
+      CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
+      break;
+    case DAC960_V1_Read:
+      CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
+      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
+      break;
+    case DAC960_V1_Write:
+      CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
+      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
+      break;
+    case DAC960_V1_ReadWithScatterGather:
+      CommandMailbox->Common.CommandOpcode =
+	DAC960_V1_ReadWithScatterGather_Old;
+      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
+      break;
+    case DAC960_V1_WriteWithScatterGather:
+      CommandMailbox->Common.CommandOpcode =
+	DAC960_V1_WriteWithScatterGather_Old;
+      DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
+      break;
+    default:
+      break;
+    }
+  while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
+    udelay(1);
+  DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
+  DAC960_PD_NewCommand(ControllerBaseAddress);
+}
+
+
+/*
+  DAC960_ExecuteCommand executes Command and waits for completion.
+*/
+
+static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DECLARE_COMPLETION(Completion);
+  unsigned long flags;
+  Command->Completion = &Completion;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_QueueCommand(Command);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+ 
+  if (in_interrupt())
+	  return;
+  wait_for_completion(&Completion);
+}
+
+
+/*
+  DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
+  Command and waits for completion.  It returns true on success and false
+  on failure.
+*/
+
+static boolean DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
+				      DAC960_V1_CommandOpcode_T CommandOpcode,
+				      dma_addr_t DataDMA)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandStatus_T CommandStatus;
+  DAC960_V1_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->Type3.CommandOpcode = CommandOpcode;
+  CommandMailbox->Type3.BusAddress = DataDMA;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V1.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V1_NormalCompletion);
+}
+
+
+/*
+  DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
+  Command and waits for completion.  It returns true on success and false
+  on failure.
+*/
+
+static boolean DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
+				       DAC960_V1_CommandOpcode_T CommandOpcode,
+				       unsigned char CommandOpcode2,
+				       dma_addr_t DataDMA)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandStatus_T CommandStatus;
+  DAC960_V1_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
+  CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
+  CommandMailbox->Type3B.BusAddress = DataDMA;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V1.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V1_NormalCompletion);
+}
+
+
+/*
+  DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
+  Command and waits for completion.  It returns true on success and false
+  on failure.
+*/
+
+static boolean DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
+				       DAC960_V1_CommandOpcode_T CommandOpcode,
+				       unsigned char Channel,
+				       unsigned char TargetID,
+				       dma_addr_t DataDMA)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_CommandStatus_T CommandStatus;
+  DAC960_V1_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
+  CommandMailbox->Type3D.Channel = Channel;
+  CommandMailbox->Type3D.TargetID = TargetID;
+  CommandMailbox->Type3D.BusAddress = DataDMA;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V1.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V1_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
+  Reading IOCTL Command and waits for completion.  It returns true on success
+  and false on failure.
+
+  Return data in The controller's HealthStatusBuffer, which is dma-able memory
+*/
+
+static boolean DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandStatus_T CommandStatus;
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->Common.CommandControlBits
+			.DataTransferControllerToHost = true;
+  CommandMailbox->Common.CommandControlBits
+			.NoAutoRequestSense = true;
+  CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
+  CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
+  CommandMailbox->Common.DataTransferMemoryAddress
+			.ScatterGatherSegments[0]
+			.SegmentDataPointer =
+    Controller->V2.HealthStatusBufferDMA;
+  CommandMailbox->Common.DataTransferMemoryAddress
+			.ScatterGatherSegments[0]
+			.SegmentByteCount =
+    CommandMailbox->Common.DataTransferSize;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V2.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
+  Information Reading IOCTL Command and waits for completion.  It returns
+  true on success and false on failure.
+
+  Data is returned in the controller's V2.NewControllerInformation dma-able
+  memory buffer.
+*/
+
+static boolean DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandStatus_T CommandStatus;
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->ControllerInfo.CommandControlBits
+				.DataTransferControllerToHost = true;
+  CommandMailbox->ControllerInfo.CommandControlBits
+				.NoAutoRequestSense = true;
+  CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
+  CommandMailbox->ControllerInfo.ControllerNumber = 0;
+  CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
+  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+				.ScatterGatherSegments[0]
+				.SegmentDataPointer =
+    	Controller->V2.NewControllerInformationDMA;
+  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+				.ScatterGatherSegments[0]
+				.SegmentByteCount =
+    CommandMailbox->ControllerInfo.DataTransferSize;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V2.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
+  Device Information Reading IOCTL Command and waits for completion.  It
+  returns true on success and false on failure.
+
+  Data is returned in the controller's V2.NewLogicalDeviceInformation
+*/
+
+static boolean DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
+					   unsigned short LogicalDeviceNumber)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandStatus_T CommandStatus;
+
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->LogicalDeviceInfo.CommandOpcode =
+				DAC960_V2_IOCTL;
+  CommandMailbox->LogicalDeviceInfo.CommandControlBits
+				   .DataTransferControllerToHost = true;
+  CommandMailbox->LogicalDeviceInfo.CommandControlBits
+				   .NoAutoRequestSense = true;
+  CommandMailbox->LogicalDeviceInfo.DataTransferSize = 
+				sizeof(DAC960_V2_LogicalDeviceInfo_T);
+  CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
+    LogicalDeviceNumber;
+  CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
+  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
+				   .ScatterGatherSegments[0]
+				   .SegmentDataPointer =
+    	Controller->V2.NewLogicalDeviceInformationDMA;
+  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
+				   .ScatterGatherSegments[0]
+				   .SegmentByteCount =
+    CommandMailbox->LogicalDeviceInfo.DataTransferSize;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V2.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
+  Physical Device Information" IOCTL Command and waits for completion.  It
+  returns true on success and false on failure.
+
+  The Channel, TargetID, LogicalUnit arguments should be 0 the first time
+  this function is called for a given controller.  This will return data
+  for the "first" device on that controller.  The returned data includes a
+  Channel, TargetID, LogicalUnit that can be passed in to this routine to
+  get data for the NEXT device on that controller.
+
+  Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
+  memory buffer.
+
+*/
+
+static boolean DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,
+					    unsigned char Channel,
+					    unsigned char TargetID,
+					    unsigned char LogicalUnit)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandStatus_T CommandStatus;
+
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
+				    .DataTransferControllerToHost = true;
+  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
+				    .NoAutoRequestSense = true;
+  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
+				sizeof(DAC960_V2_PhysicalDeviceInfo_T);
+  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit = LogicalUnit;
+  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
+  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
+  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
+					DAC960_V2_GetPhysicalDeviceInfoValid;
+  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
+				    .ScatterGatherSegments[0]
+				    .SegmentDataPointer =
+    					Controller->V2.NewPhysicalDeviceInformationDMA;
+  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
+				    .ScatterGatherSegments[0]
+				    .SegmentByteCount =
+    CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V2.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+static void DAC960_V2_ConstructNewUnitSerialNumber(
+	DAC960_Controller_T *Controller,
+	DAC960_V2_CommandMailbox_T *CommandMailbox, int Channel, int TargetID,
+	int LogicalUnit)
+{
+      CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10_Passthru;
+      CommandMailbox->SCSI_10.CommandControlBits
+			     .DataTransferControllerToHost = true;
+      CommandMailbox->SCSI_10.CommandControlBits
+			     .NoAutoRequestSense = true;
+      CommandMailbox->SCSI_10.DataTransferSize =
+	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+      CommandMailbox->SCSI_10.PhysicalDevice.LogicalUnit = LogicalUnit;
+      CommandMailbox->SCSI_10.PhysicalDevice.TargetID = TargetID;
+      CommandMailbox->SCSI_10.PhysicalDevice.Channel = Channel;
+      CommandMailbox->SCSI_10.CDBLength = 6;
+      CommandMailbox->SCSI_10.SCSI_CDB[0] = 0x12; /* INQUIRY */
+      CommandMailbox->SCSI_10.SCSI_CDB[1] = 1; /* EVPD = 1 */
+      CommandMailbox->SCSI_10.SCSI_CDB[2] = 0x80; /* Page Code */
+      CommandMailbox->SCSI_10.SCSI_CDB[3] = 0; /* Reserved */
+      CommandMailbox->SCSI_10.SCSI_CDB[4] =
+	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+      CommandMailbox->SCSI_10.SCSI_CDB[5] = 0; /* Control */
+      CommandMailbox->SCSI_10.DataTransferMemoryAddress
+			     .ScatterGatherSegments[0]
+			     .SegmentDataPointer =
+		Controller->V2.NewInquiryUnitSerialNumberDMA;
+      CommandMailbox->SCSI_10.DataTransferMemoryAddress
+			     .ScatterGatherSegments[0]
+			     .SegmentByteCount =
+		CommandMailbox->SCSI_10.DataTransferSize;
+}
+
+
+/*
+  DAC960_V2_NewUnitSerialNumber executes an SCSI pass-through
+  Inquiry command to a SCSI device identified by Channel number,
+  Target id, Logical Unit Number.  This function Waits for completion
+  of the command.
+
+  The return data includes Unit Serial Number information for the
+  specified device.
+
+  Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
+  memory buffer.
+*/
+
+static boolean DAC960_V2_NewInquiryUnitSerialNumber(DAC960_Controller_T *Controller,
+			int Channel, int TargetID, int LogicalUnit)
+{
+      DAC960_Command_T *Command;
+      DAC960_V2_CommandMailbox_T *CommandMailbox;
+      DAC960_V2_CommandStatus_T CommandStatus;
+
+      Command = DAC960_AllocateCommand(Controller);
+      CommandMailbox = &Command->V2.CommandMailbox;
+      DAC960_V2_ClearCommand(Command);
+      Command->CommandType = DAC960_ImmediateCommand;
+
+      DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
+			Channel, TargetID, LogicalUnit);
+
+      DAC960_ExecuteCommand(Command);
+      CommandStatus = Command->V2.CommandStatus;
+      DAC960_DeallocateCommand(Command);
+      return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_DeviceOperation executes a DAC960 V2 Firmware Controller Device
+  Operation IOCTL Command and waits for completion.  It returns true on
+  success and false on failure.
+*/
+
+static boolean DAC960_V2_DeviceOperation(DAC960_Controller_T *Controller,
+					 DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
+					 DAC960_V2_OperationDevice_T
+					   OperationDevice)
+{
+  DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_CommandStatus_T CommandStatus;
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox->DeviceOperation.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->DeviceOperation.CommandControlBits
+				 .DataTransferControllerToHost = true;
+  CommandMailbox->DeviceOperation.CommandControlBits
+    				 .NoAutoRequestSense = true;
+  CommandMailbox->DeviceOperation.IOCTL_Opcode = IOCTL_Opcode;
+  CommandMailbox->DeviceOperation.OperationDevice = OperationDevice;
+  DAC960_ExecuteCommand(Command);
+  CommandStatus = Command->V2.CommandStatus;
+  DAC960_DeallocateCommand(Command);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V1_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
+  for DAC960 V1 Firmware Controllers.
+
+  PD and P controller types have no memory mailbox, but still need the
+  other dma mapped memory.
+*/
+
+static boolean DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
+						      *Controller)
+{
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_HardwareType_T hw_type = Controller->HardwareType;
+  struct pci_dev *PCI_Device = Controller->PCIDevice;
+  struct dma_loaf *DmaPages = &Controller->DmaPages;
+  size_t DmaPagesSize;
+  size_t CommandMailboxesSize;
+  size_t StatusMailboxesSize;
+
+  DAC960_V1_CommandMailbox_T *CommandMailboxesMemory;
+  dma_addr_t CommandMailboxesMemoryDMA;
+
+  DAC960_V1_StatusMailbox_T *StatusMailboxesMemory;
+  dma_addr_t StatusMailboxesMemoryDMA;
+
+  DAC960_V1_CommandMailbox_T CommandMailbox;
+  DAC960_V1_CommandStatus_T CommandStatus;
+  int TimeoutCounter;
+  int i;
+
+  
+  if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V1_PciDmaMask))
+	return DAC960_Failure(Controller, "DMA mask out of range");
+  Controller->BounceBufferLimit = DAC690_V1_PciDmaMask;
+
+  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
+    CommandMailboxesSize =  0;
+    StatusMailboxesSize = 0;
+  } else {
+    CommandMailboxesSize =  DAC960_V1_CommandMailboxCount * sizeof(DAC960_V1_CommandMailbox_T);
+    StatusMailboxesSize = DAC960_V1_StatusMailboxCount * sizeof(DAC960_V1_StatusMailbox_T);
+  }
+  DmaPagesSize = CommandMailboxesSize + StatusMailboxesSize + 
+	sizeof(DAC960_V1_DCDB_T) + sizeof(DAC960_V1_Enquiry_T) +
+	sizeof(DAC960_V1_ErrorTable_T) + sizeof(DAC960_V1_EventLogEntry_T) +
+	sizeof(DAC960_V1_RebuildProgress_T) +
+	sizeof(DAC960_V1_LogicalDriveInformationArray_T) +
+	sizeof(DAC960_V1_BackgroundInitializationStatus_T) +
+	sizeof(DAC960_V1_DeviceState_T) + sizeof(DAC960_SCSI_Inquiry_T) +
+	sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+
+  if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize))
+	return false;
+
+
+  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) 
+	goto skip_mailboxes;
+
+  CommandMailboxesMemory = slice_dma_loaf(DmaPages,
+                CommandMailboxesSize, &CommandMailboxesMemoryDMA);
+  
+  /* These are the base addresses for the command memory mailbox array */
+  Controller->V1.FirstCommandMailbox = CommandMailboxesMemory;
+  Controller->V1.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
+
+  CommandMailboxesMemory += DAC960_V1_CommandMailboxCount - 1;
+  Controller->V1.LastCommandMailbox = CommandMailboxesMemory;
+  Controller->V1.NextCommandMailbox = Controller->V1.FirstCommandMailbox;
+  Controller->V1.PreviousCommandMailbox1 = Controller->V1.LastCommandMailbox;
+  Controller->V1.PreviousCommandMailbox2 =
+	  				Controller->V1.LastCommandMailbox - 1;
+
+  /* These are the base addresses for the status memory mailbox array */
+  StatusMailboxesMemory = slice_dma_loaf(DmaPages,
+                StatusMailboxesSize, &StatusMailboxesMemoryDMA);
+
+  Controller->V1.FirstStatusMailbox = StatusMailboxesMemory;
+  Controller->V1.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
+  StatusMailboxesMemory += DAC960_V1_StatusMailboxCount - 1;
+  Controller->V1.LastStatusMailbox = StatusMailboxesMemory;
+  Controller->V1.NextStatusMailbox = Controller->V1.FirstStatusMailbox;
+
+skip_mailboxes:
+  Controller->V1.MonitoringDCDB = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_DCDB_T),
+                &Controller->V1.MonitoringDCDB_DMA);
+
+  Controller->V1.NewEnquiry = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_Enquiry_T),
+                &Controller->V1.NewEnquiryDMA);
+
+  Controller->V1.NewErrorTable = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_ErrorTable_T),
+                &Controller->V1.NewErrorTableDMA);
+
+  Controller->V1.EventLogEntry = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_EventLogEntry_T),
+                &Controller->V1.EventLogEntryDMA);
+
+  Controller->V1.RebuildProgress = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_RebuildProgress_T),
+                &Controller->V1.RebuildProgressDMA);
+
+  Controller->V1.NewLogicalDriveInformation = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_LogicalDriveInformationArray_T),
+                &Controller->V1.NewLogicalDriveInformationDMA);
+
+  Controller->V1.BackgroundInitializationStatus = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_BackgroundInitializationStatus_T),
+                &Controller->V1.BackgroundInitializationStatusDMA);
+
+  Controller->V1.NewDeviceState = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V1_DeviceState_T),
+                &Controller->V1.NewDeviceStateDMA);
+
+  Controller->V1.NewInquiryStandardData = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_SCSI_Inquiry_T),
+                &Controller->V1.NewInquiryStandardDataDMA);
+
+  Controller->V1.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
+                &Controller->V1.NewInquiryUnitSerialNumberDMA);
+
+  if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
+	return true;
+ 
+  /* Enable the Memory Mailbox Interface. */
+  Controller->V1.DualModeMemoryMailboxInterface = true;
+  CommandMailbox.TypeX.CommandOpcode = 0x2B;
+  CommandMailbox.TypeX.CommandIdentifier = 0;
+  CommandMailbox.TypeX.CommandOpcode2 = 0x14;
+  CommandMailbox.TypeX.CommandMailboxesBusAddress =
+    				Controller->V1.FirstCommandMailboxDMA;
+  CommandMailbox.TypeX.StatusMailboxesBusAddress =
+    				Controller->V1.FirstStatusMailboxDMA;
+#define TIMEOUT_COUNT 1000000
+
+  for (i = 0; i < 2; i++)
+    switch (Controller->HardwareType)
+      {
+      case DAC960_LA_Controller:
+	TimeoutCounter = TIMEOUT_COUNT;
+	while (--TimeoutCounter >= 0)
+	  {
+	    if (!DAC960_LA_HardwareMailboxFullP(ControllerBaseAddress))
+	      break;
+	    udelay(10);
+	  }
+	if (TimeoutCounter < 0) return false;
+	DAC960_LA_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
+	DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
+	TimeoutCounter = TIMEOUT_COUNT;
+	while (--TimeoutCounter >= 0)
+	  {
+	    if (DAC960_LA_HardwareMailboxStatusAvailableP(
+		  ControllerBaseAddress))
+	      break;
+	    udelay(10);
+	  }
+	if (TimeoutCounter < 0) return false;
+	CommandStatus = DAC960_LA_ReadStatusRegister(ControllerBaseAddress);
+	DAC960_LA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
+	DAC960_LA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
+	if (CommandStatus == DAC960_V1_NormalCompletion) return true;
+	Controller->V1.DualModeMemoryMailboxInterface = false;
+	CommandMailbox.TypeX.CommandOpcode2 = 0x10;
+	break;
+      case DAC960_PG_Controller:
+	TimeoutCounter = TIMEOUT_COUNT;
+	while (--TimeoutCounter >= 0)
+	  {
+	    if (!DAC960_PG_HardwareMailboxFullP(ControllerBaseAddress))
+	      break;
+	    udelay(10);
+	  }
+	if (TimeoutCounter < 0) return false;
+	DAC960_PG_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
+	DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
+
+	TimeoutCounter = TIMEOUT_COUNT;
+	while (--TimeoutCounter >= 0)
+	  {
+	    if (DAC960_PG_HardwareMailboxStatusAvailableP(
+		  ControllerBaseAddress))
+	      break;
+	    udelay(10);
+	  }
+	if (TimeoutCounter < 0) return false;
+	CommandStatus = DAC960_PG_ReadStatusRegister(ControllerBaseAddress);
+	DAC960_PG_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
+	DAC960_PG_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
+	if (CommandStatus == DAC960_V1_NormalCompletion) return true;
+	Controller->V1.DualModeMemoryMailboxInterface = false;
+	CommandMailbox.TypeX.CommandOpcode2 = 0x10;
+	break;
+      default:
+        DAC960_Failure(Controller, "Unknown Controller Type\n");
+	break;
+      }
+  return false;
+}
+
+
+/*
+  DAC960_V2_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
+  for DAC960 V2 Firmware Controllers.
+
+  Aggregate the space needed for the controller's memory mailbox and
+  the other data structures that will be targets of dma transfers with
+  the controller.  Allocate a dma-mapped region of memory to hold these
+  structures.  Then, save CPU pointers and dma_addr_t values to reference
+  the structures that are contained in that region.
+*/
+
+static boolean DAC960_V2_EnableMemoryMailboxInterface(DAC960_Controller_T
+						      *Controller)
+{
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  struct pci_dev *PCI_Device = Controller->PCIDevice;
+  struct dma_loaf *DmaPages = &Controller->DmaPages;
+  size_t DmaPagesSize;
+  size_t CommandMailboxesSize;
+  size_t StatusMailboxesSize;
+
+  DAC960_V2_CommandMailbox_T *CommandMailboxesMemory;
+  dma_addr_t CommandMailboxesMemoryDMA;
+
+  DAC960_V2_StatusMailbox_T *StatusMailboxesMemory;
+  dma_addr_t StatusMailboxesMemoryDMA;
+
+  DAC960_V2_CommandMailbox_T *CommandMailbox;
+  dma_addr_t	CommandMailboxDMA;
+  DAC960_V2_CommandStatus_T CommandStatus;
+
+  if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V2_PciDmaMask))
+	return DAC960_Failure(Controller, "DMA mask out of range");
+  Controller->BounceBufferLimit = DAC690_V2_PciDmaMask;
+
+  /* This is a temporary dma mapping, used only in the scope of this function */
+  CommandMailbox =
+	  (DAC960_V2_CommandMailbox_T *)pci_alloc_consistent( PCI_Device,
+		sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
+  if (CommandMailbox == NULL)
+	  return false;
+
+  CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
+  StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
+  DmaPagesSize =
+    CommandMailboxesSize + StatusMailboxesSize +
+    sizeof(DAC960_V2_HealthStatusBuffer_T) +
+    sizeof(DAC960_V2_ControllerInfo_T) +
+    sizeof(DAC960_V2_LogicalDeviceInfo_T) +
+    sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
+    sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
+    sizeof(DAC960_V2_Event_T) +
+    sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
+
+  if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
+  	pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
+					CommandMailbox, CommandMailboxDMA);
+	return false;
+  }
+
+  CommandMailboxesMemory = slice_dma_loaf(DmaPages,
+		CommandMailboxesSize, &CommandMailboxesMemoryDMA);
+
+  /* These are the base addresses for the command memory mailbox array */
+  Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
+  Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
+
+  CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
+  Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
+  Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
+  Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
+  Controller->V2.PreviousCommandMailbox2 =
+    					Controller->V2.LastCommandMailbox - 1;
+
+  /* These are the base addresses for the status memory mailbox array */
+  StatusMailboxesMemory = slice_dma_loaf(DmaPages,
+		StatusMailboxesSize, &StatusMailboxesMemoryDMA);
+
+  Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
+  Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
+  StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
+  Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
+  Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
+
+  Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
+		sizeof(DAC960_V2_HealthStatusBuffer_T),
+		&Controller->V2.HealthStatusBufferDMA);
+
+  Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V2_ControllerInfo_T), 
+                &Controller->V2.NewControllerInformationDMA);
+
+  Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V2_LogicalDeviceInfo_T),
+                &Controller->V2.NewLogicalDeviceInformationDMA);
+
+  Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V2_PhysicalDeviceInfo_T),
+                &Controller->V2.NewPhysicalDeviceInformationDMA);
+
+  Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
+                &Controller->V2.NewInquiryUnitSerialNumberDMA);
+
+  Controller->V2.Event = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V2_Event_T),
+                &Controller->V2.EventDMA);
+
+  Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
+                sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
+                &Controller->V2.PhysicalToLogicalDeviceDMA);
+
+  /*
+    Enable the Memory Mailbox Interface.
+    
+    I don't know why we can't just use one of the memory mailboxes
+    we just allocated to do this, instead of using this temporary one.
+    Try this change later.
+  */
+  memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
+  CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
+  CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
+  CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
+    (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
+  CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
+    (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
+  CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
+  CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
+  CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
+  CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
+  CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
+  CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
+    					Controller->V2.HealthStatusBufferDMA;
+  CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
+    					Controller->V2.FirstCommandMailboxDMA;
+  CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
+    					Controller->V2.FirstStatusMailboxDMA;
+  switch (Controller->HardwareType)
+    {
+    case DAC960_BA_Controller:
+      while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
+	udelay(1);
+      DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
+      DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
+      while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
+	udelay(1);
+      CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
+      DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
+      DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
+      break;
+    case DAC960_LP_Controller:
+      while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
+	udelay(1);
+      DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
+      DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
+      while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
+	udelay(1);
+      CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
+      DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
+      DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
+      break;
+    default:
+      DAC960_Failure(Controller, "Unknown Controller Type\n");
+      CommandStatus = DAC960_V2_AbormalCompletion;
+      break;
+    }
+  pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
+					CommandMailbox, CommandMailboxDMA);
+  return (CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V1_ReadControllerConfiguration reads the Configuration Information
+  from DAC960 V1 Firmware Controllers and initializes the Controller structure.
+*/
+
+static boolean DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
+						     *Controller)
+{
+  DAC960_V1_Enquiry2_T *Enquiry2;
+  dma_addr_t Enquiry2DMA;
+  DAC960_V1_Config2_T *Config2;
+  dma_addr_t Config2DMA;
+  int LogicalDriveNumber, Channel, TargetID;
+  struct dma_loaf local_dma;
+
+  if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
+		sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
+	return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
+
+  Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
+  Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
+
+  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
+			      Controller->V1.NewEnquiryDMA)) {
+    free_dma_loaf(Controller->PCIDevice, &local_dma);
+    return DAC960_Failure(Controller, "ENQUIRY");
+  }
+  memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
+						sizeof(DAC960_V1_Enquiry_T));
+
+  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
+    free_dma_loaf(Controller->PCIDevice, &local_dma);
+    return DAC960_Failure(Controller, "ENQUIRY2");
+  }
+
+  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
+    free_dma_loaf(Controller->PCIDevice, &local_dma);
+    return DAC960_Failure(Controller, "READ CONFIG2");
+  }
+
+  if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
+			      Controller->V1.NewLogicalDriveInformationDMA)) {
+    free_dma_loaf(Controller->PCIDevice, &local_dma);
+    return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
+  }
+  memcpy(&Controller->V1.LogicalDriveInformation,
+		Controller->V1.NewLogicalDriveInformation,
+		sizeof(DAC960_V1_LogicalDriveInformationArray_T));
+
+  for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
+    for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
+      if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
+				   Channel, TargetID,
+				   Controller->V1.NewDeviceStateDMA)) {
+    		free_dma_loaf(Controller->PCIDevice, &local_dma);
+		return DAC960_Failure(Controller, "GET DEVICE STATE");
+	}
+	memcpy(&Controller->V1.DeviceState[Channel][TargetID],
+		Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
+     }
+  /*
+    Initialize the Controller Model Name and Full Model Name fields.
+  */
+  switch (Enquiry2->HardwareID.SubModel)
+    {
+    case DAC960_V1_P_PD_PU:
+      if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
+	strcpy(Controller->ModelName, "DAC960PU");
+      else strcpy(Controller->ModelName, "DAC960PD");
+      break;
+    case DAC960_V1_PL:
+      strcpy(Controller->ModelName, "DAC960PL");
+      break;
+    case DAC960_V1_PG:
+      strcpy(Controller->ModelName, "DAC960PG");
+      break;
+    case DAC960_V1_PJ:
+      strcpy(Controller->ModelName, "DAC960PJ");
+      break;
+    case DAC960_V1_PR:
+      strcpy(Controller->ModelName, "DAC960PR");
+      break;
+    case DAC960_V1_PT:
+      strcpy(Controller->ModelName, "DAC960PT");
+      break;
+    case DAC960_V1_PTL0:
+      strcpy(Controller->ModelName, "DAC960PTL0");
+      break;
+    case DAC960_V1_PRL:
+      strcpy(Controller->ModelName, "DAC960PRL");
+      break;
+    case DAC960_V1_PTL1:
+      strcpy(Controller->ModelName, "DAC960PTL1");
+      break;
+    case DAC960_V1_1164P:
+      strcpy(Controller->ModelName, "DAC1164P");
+      break;
+    default:
+      free_dma_loaf(Controller->PCIDevice, &local_dma);
+      return DAC960_Failure(Controller, "MODEL VERIFICATION");
+    }
+  strcpy(Controller->FullModelName, "Mylex ");
+  strcat(Controller->FullModelName, Controller->ModelName);
+  /*
+    Initialize the Controller Firmware Version field and verify that it
+    is a supported firmware version.  The supported firmware versions are:
+
+    DAC1164P		    5.06 and above
+    DAC960PTL/PRL/PJ/PG	    4.06 and above
+    DAC960PU/PD/PL	    3.51 and above
+    DAC960PU/PD/PL/P	    2.73 and above
+  */
+#if defined(CONFIG_ALPHA)
+  /*
+    DEC Alpha machines were often equipped with DAC960 cards that were
+    OEMed from Mylex, and had their own custom firmware. Version 2.70,
+    the last custom FW revision to be released by DEC for these older
+    controllers, appears to work quite well with this driver.
+
+    Cards tested successfully were several versions each of the PD and
+    PU, called by DEC the KZPSC and KZPAC, respectively, and having
+    the Manufacturer Numbers (from Mylex), usually on a sticker on the
+    back of the board, of:
+
+    KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
+    KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
+  */
+# define FIRMWARE_27X	"2.70"
+#else
+# define FIRMWARE_27X	"2.73"
+#endif
+
+  if (Enquiry2->FirmwareID.MajorVersion == 0)
+    {
+      Enquiry2->FirmwareID.MajorVersion =
+	Controller->V1.Enquiry.MajorFirmwareVersion;
+      Enquiry2->FirmwareID.MinorVersion =
+	Controller->V1.Enquiry.MinorFirmwareVersion;
+      Enquiry2->FirmwareID.FirmwareType = '0';
+      Enquiry2->FirmwareID.TurnID = 0;
+    }
+  sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
+	  Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
+	  Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
+  if (!((Controller->FirmwareVersion[0] == '5' &&
+	 strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
+	(Controller->FirmwareVersion[0] == '4' &&
+	 strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
+	(Controller->FirmwareVersion[0] == '3' &&
+	 strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
+	(Controller->FirmwareVersion[0] == '2' &&
+	 strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
+    {
+      DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
+      DAC960_Error("Firmware Version = '%s'\n", Controller,
+		   Controller->FirmwareVersion);
+      free_dma_loaf(Controller->PCIDevice, &local_dma);
+      return false;
+    }
+  /*
+    Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
+    Enclosure Management Enabled fields.
+  */
+  Controller->Channels = Enquiry2->ActualChannels;
+  Controller->Targets = Enquiry2->MaxTargets;
+  Controller->MemorySize = Enquiry2->MemorySize >> 20;
+  Controller->V1.SAFTE_EnclosureManagementEnabled =
+    (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
+  /*
+    Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
+    Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
+    Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
+    less than the Controller Queue Depth to allow for an automatic drive
+    rebuild operation.
+  */
+  Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
+  Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
+  if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
+    Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
+  Controller->LogicalDriveCount =
+    Controller->V1.Enquiry.NumberOfLogicalDrives;
+  Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
+  Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
+  Controller->DriverScatterGatherLimit =
+    Controller->ControllerScatterGatherLimit;
+  if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
+    Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
+  /*
+    Initialize the Stripe Size, Segment Size, and Geometry Translation.
+  */
+  Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
+			      >> (10 - DAC960_BlockSizeBits);
+  Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
+			       >> (10 - DAC960_BlockSizeBits);
+  switch (Config2->DriveGeometry)
+    {
+    case DAC960_V1_Geometry_128_32:
+      Controller->V1.GeometryTranslationHeads = 128;
+      Controller->V1.GeometryTranslationSectors = 32;
+      break;
+    case DAC960_V1_Geometry_255_63:
+      Controller->V1.GeometryTranslationHeads = 255;
+      Controller->V1.GeometryTranslationSectors = 63;
+      break;
+    default:
+      free_dma_loaf(Controller->PCIDevice, &local_dma);
+      return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
+    }
+  /*
+    Initialize the Background Initialization Status.
+  */
+  if ((Controller->FirmwareVersion[0] == '4' &&
+      strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
+      (Controller->FirmwareVersion[0] == '5' &&
+       strcmp(Controller->FirmwareVersion, "5.08") >= 0))
+    {
+      Controller->V1.BackgroundInitializationStatusSupported = true;
+      DAC960_V1_ExecuteType3B(Controller,
+			      DAC960_V1_BackgroundInitializationControl, 0x20,
+			      Controller->
+			       V1.BackgroundInitializationStatusDMA);
+      memcpy(&Controller->V1.LastBackgroundInitializationStatus,
+		Controller->V1.BackgroundInitializationStatus,
+		sizeof(DAC960_V1_BackgroundInitializationStatus_T));
+    }
+  /*
+    Initialize the Logical Drive Initially Accessible flag.
+  */
+  for (LogicalDriveNumber = 0;
+       LogicalDriveNumber < Controller->LogicalDriveCount;
+       LogicalDriveNumber++)
+    if (Controller->V1.LogicalDriveInformation
+		       [LogicalDriveNumber].LogicalDriveState !=
+	DAC960_V1_LogicalDrive_Offline)
+      Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
+  Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
+  free_dma_loaf(Controller->PCIDevice, &local_dma);
+  return true;
+}
+
+
+/*
+  DAC960_V2_ReadControllerConfiguration reads the Configuration Information
+  from DAC960 V2 Firmware Controllers and initializes the Controller structure.
+*/
+
+static boolean DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
+						     *Controller)
+{
+  DAC960_V2_ControllerInfo_T *ControllerInfo =
+    		&Controller->V2.ControllerInformation;
+  unsigned short LogicalDeviceNumber = 0;
+  int ModelNameLength;
+
+  /* Get data into dma-able area, then copy into permanant location */
+  if (!DAC960_V2_NewControllerInfo(Controller))
+    return DAC960_Failure(Controller, "GET CONTROLLER INFO");
+  memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
+			sizeof(DAC960_V2_ControllerInfo_T));
+	 
+  
+  if (!DAC960_V2_GeneralInfo(Controller))
+    return DAC960_Failure(Controller, "GET HEALTH STATUS");
+
+  /*
+    Initialize the Controller Model Name and Full Model Name fields.
+  */
+  ModelNameLength = sizeof(ControllerInfo->ControllerName);
+  if (ModelNameLength > sizeof(Controller->ModelName)-1)
+    ModelNameLength = sizeof(Controller->ModelName)-1;
+  memcpy(Controller->ModelName, ControllerInfo->ControllerName,
+	 ModelNameLength);
+  ModelNameLength--;
+  while (Controller->ModelName[ModelNameLength] == ' ' ||
+	 Controller->ModelName[ModelNameLength] == '\0')
+    ModelNameLength--;
+  Controller->ModelName[++ModelNameLength] = '\0';
+  strcpy(Controller->FullModelName, "Mylex ");
+  strcat(Controller->FullModelName, Controller->ModelName);
+  /*
+    Initialize the Controller Firmware Version field.
+  */
+  sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
+	  ControllerInfo->FirmwareMajorVersion,
+	  ControllerInfo->FirmwareMinorVersion,
+	  ControllerInfo->FirmwareTurnNumber);
+  if (ControllerInfo->FirmwareMajorVersion == 6 &&
+      ControllerInfo->FirmwareMinorVersion == 0 &&
+      ControllerInfo->FirmwareTurnNumber < 1)
+    {
+      DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
+		  Controller, Controller->FirmwareVersion);
+      DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
+		  Controller);
+      DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
+		  Controller);
+    }
+  /*
+    Initialize the Controller Channels, Targets, and Memory Size.
+  */
+  Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
+  Controller->Targets =
+    ControllerInfo->MaximumTargetsPerChannel
+		    [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
+  Controller->MemorySize = ControllerInfo->MemorySizeMB;
+  /*
+    Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
+    Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
+    Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
+    less than the Controller Queue Depth to allow for an automatic drive
+    rebuild operation.
+  */
+  Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
+  Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
+  if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
+    Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
+  Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
+  Controller->MaxBlocksPerCommand =
+    ControllerInfo->MaximumDataTransferSizeInBlocks;
+  Controller->ControllerScatterGatherLimit =
+    ControllerInfo->MaximumScatterGatherEntries;
+  Controller->DriverScatterGatherLimit =
+    Controller->ControllerScatterGatherLimit;
+  if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
+    Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
+  /*
+    Initialize the Logical Device Information.
+  */
+  while (true)
+    {
+      DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
+	Controller->V2.NewLogicalDeviceInformation;
+      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
+      DAC960_V2_PhysicalDevice_T PhysicalDevice;
+
+      if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
+	break;
+      LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
+      if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
+	DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
+		       Controller, LogicalDeviceNumber);
+		break;
+      }
+      if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
+	DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
+	      Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
+        LogicalDeviceNumber++;
+        continue;
+      }
+      PhysicalDevice.Controller = 0;
+      PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
+      PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
+      PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
+      Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
+	PhysicalDevice;
+      if (NewLogicalDeviceInfo->LogicalDeviceState !=
+	  DAC960_V2_LogicalDevice_Offline)
+	Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
+      LogicalDeviceInfo = (DAC960_V2_LogicalDeviceInfo_T *)
+	kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T), GFP_ATOMIC);
+      if (LogicalDeviceInfo == NULL)
+	return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
+      Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
+	LogicalDeviceInfo;
+      memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
+	     sizeof(DAC960_V2_LogicalDeviceInfo_T));
+      LogicalDeviceNumber++;
+    }
+  return true;
+}
+
+
+/*
+  DAC960_ReportControllerConfiguration reports the Configuration Information
+  for Controller.
+*/
+
+static boolean DAC960_ReportControllerConfiguration(DAC960_Controller_T
+						    *Controller)
+{
+  DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
+	      Controller, Controller->ModelName);
+  DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
+	      Controller, Controller->FirmwareVersion,
+	      Controller->Channels, Controller->MemorySize);
+  DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
+	      Controller, Controller->Bus,
+	      Controller->Device, Controller->Function);
+  if (Controller->IO_Address == 0)
+    DAC960_Info("Unassigned\n", Controller);
+  else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
+  DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
+	      Controller, Controller->PCI_Address,
+	      (unsigned long) Controller->BaseAddress,
+	      Controller->IRQ_Channel);
+  DAC960_Info("  Controller Queue Depth: %d, "
+	      "Maximum Blocks per Command: %d\n",
+	      Controller, Controller->ControllerQueueDepth,
+	      Controller->MaxBlocksPerCommand);
+  DAC960_Info("  Driver Queue Depth: %d, "
+	      "Scatter/Gather Limit: %d of %d Segments\n",
+	      Controller, Controller->DriverQueueDepth,
+	      Controller->DriverScatterGatherLimit,
+	      Controller->ControllerScatterGatherLimit);
+  if (Controller->FirmwareType == DAC960_V1_Controller)
+    {
+      DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
+		  "BIOS Geometry: %d/%d\n", Controller,
+		  Controller->V1.StripeSize,
+		  Controller->V1.SegmentSize,
+		  Controller->V1.GeometryTranslationHeads,
+		  Controller->V1.GeometryTranslationSectors);
+      if (Controller->V1.SAFTE_EnclosureManagementEnabled)
+	DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
+    }
+  return true;
+}
+
+
+/*
+  DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
+  for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
+  Inquiry Unit Serial Number information for each device connected to
+  Controller.
+*/
+
+static boolean DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
+						 *Controller)
+{
+  struct dma_loaf local_dma;
+
+  dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
+  DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
+
+  dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
+  DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
+
+  dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
+  DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
+
+  struct completion Completions[DAC960_V1_MaxChannels];
+  unsigned long flags;
+  int Channel, TargetID;
+
+  if (!init_dma_loaf(Controller->PCIDevice, &local_dma, 
+		DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
+			sizeof(DAC960_SCSI_Inquiry_T) +
+			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
+     return DAC960_Failure(Controller,
+                        "DMA ALLOCATION FAILED IN ReadDeviceConfiguration"); 
+   
+  for (Channel = 0; Channel < Controller->Channels; Channel++) {
+	DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
+			sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
+	SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
+			sizeof(DAC960_SCSI_Inquiry_T),
+			SCSI_Inquiry_dma + Channel);
+	SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
+			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
+			SCSI_NewInquiryUnitSerialNumberDMA + Channel);
+  }
+		
+  for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
+    {
+      /*
+       * For each channel, submit a probe for a device on that channel.
+       * The timeout interval for a device that is present is 10 seconds.
+       * With this approach, the timeout periods can elapse in parallel
+       * on each channel.
+       */
+      for (Channel = 0; Channel < Controller->Channels; Channel++)
+	{
+	  dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
+  	  DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
+  	  dma_addr_t DCDB_dma = DCDBs_dma[Channel];
+	  DAC960_Command_T *Command = Controller->Commands[Channel];
+          struct completion *Completion = &Completions[Channel];
+
+	  init_completion(Completion);
+	  DAC960_V1_ClearCommand(Command);
+	  Command->CommandType = DAC960_ImmediateCommand;
+	  Command->Completion = Completion;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
+	  Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
+	  DCDB->Channel = Channel;
+	  DCDB->TargetID = TargetID;
+	  DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
+	  DCDB->EarlyStatus = false;
+	  DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
+	  DCDB->NoAutomaticRequestSense = false;
+	  DCDB->DisconnectPermitted = true;
+	  DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
+	  DCDB->BusAddress = NewInquiryStandardDataDMA;
+	  DCDB->CDBLength = 6;
+	  DCDB->TransferLengthHigh4 = 0;
+	  DCDB->SenseLength = sizeof(DCDB->SenseData);
+	  DCDB->CDB[0] = 0x12; /* INQUIRY */
+	  DCDB->CDB[1] = 0; /* EVPD = 0 */
+	  DCDB->CDB[2] = 0; /* Page Code */
+	  DCDB->CDB[3] = 0; /* Reserved */
+	  DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
+	  DCDB->CDB[5] = 0; /* Control */
+
+	  spin_lock_irqsave(&Controller->queue_lock, flags);
+	  DAC960_QueueCommand(Command);
+	  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	}
+      /*
+       * Wait for the problems submitted in the previous loop
+       * to complete.  On the probes that are successful, 
+       * get the serial number of the device that was found.
+       */
+      for (Channel = 0; Channel < Controller->Channels; Channel++)
+	{
+	  DAC960_SCSI_Inquiry_T *InquiryStandardData =
+	    &Controller->V1.InquiryStandardData[Channel][TargetID];
+	  DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
+	  dma_addr_t NewInquiryUnitSerialNumberDMA =
+			SCSI_NewInquiryUnitSerialNumberDMA[Channel];
+	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
+	    		SCSI_NewInquiryUnitSerialNumberCPU[Channel];
+	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+	    &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
+	  DAC960_Command_T *Command = Controller->Commands[Channel];
+  	  DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
+          struct completion *Completion = &Completions[Channel];
+
+	  wait_for_completion(Completion);
+
+	  if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
+	    memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
+	    InquiryStandardData->PeripheralDeviceType = 0x1F;
+	    continue;
+	  } else
+	    memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
+	
+	  /* Preserve Channel and TargetID values from the previous loop */
+	  Command->Completion = Completion;
+	  DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+	  DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
+	  DCDB->SenseLength = sizeof(DCDB->SenseData);
+	  DCDB->CDB[0] = 0x12; /* INQUIRY */
+	  DCDB->CDB[1] = 1; /* EVPD = 1 */
+	  DCDB->CDB[2] = 0x80; /* Page Code */
+	  DCDB->CDB[3] = 0; /* Reserved */
+	  DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+	  DCDB->CDB[5] = 0; /* Control */
+
+	  spin_lock_irqsave(&Controller->queue_lock, flags);
+	  DAC960_QueueCommand(Command);
+	  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	  wait_for_completion(Completion);
+
+	  if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
+	  	memset(InquiryUnitSerialNumber, 0,
+			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+	  	InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+	  } else
+	  	memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
+			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+	}
+    }
+    free_dma_loaf(Controller->PCIDevice, &local_dma);
+  return true;
+}
+
+
+/*
+  DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
+  for DAC960 V2 Firmware Controllers by requesting the Physical Device
+  Information and SCSI Inquiry Unit Serial Number information for each
+  device connected to Controller.
+*/
+
+static boolean DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
+						 *Controller)
+{
+  unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
+  unsigned short PhysicalDeviceIndex = 0;
+
+  while (true)
+    {
+      DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
+		Controller->V2.NewPhysicalDeviceInformation;
+      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
+      DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
+		Controller->V2.NewInquiryUnitSerialNumber;
+      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
+
+      if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
+	  break;
+
+      PhysicalDeviceInfo = (DAC960_V2_PhysicalDeviceInfo_T *)
+		kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
+      if (PhysicalDeviceInfo == NULL)
+		return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
+      Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
+		PhysicalDeviceInfo;
+      memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
+		sizeof(DAC960_V2_PhysicalDeviceInfo_T));
+
+      InquiryUnitSerialNumber = (DAC960_SCSI_Inquiry_UnitSerialNumber_T *)
+	kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
+      if (InquiryUnitSerialNumber == NULL) {
+	kfree(PhysicalDeviceInfo);
+	return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
+      }
+      Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
+		InquiryUnitSerialNumber;
+
+      Channel = NewPhysicalDeviceInfo->Channel;
+      TargetID = NewPhysicalDeviceInfo->TargetID;
+      LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
+
+      /*
+	 Some devices do NOT have Unit Serial Numbers.
+	 This command fails for them.  But, we still want to
+	 remember those devices are there.  Construct a
+	 UnitSerialNumber structure for the failure case.
+      */
+      if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
+      	memset(InquiryUnitSerialNumber, 0,
+             sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+     	InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+      } else
+      	memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
+		sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+
+      PhysicalDeviceIndex++;
+      LogicalUnit++;
+    }
+  return true;
+}
+
+
+/*
+  DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
+  Product Serial Number fields of the Inquiry Standard Data and Inquiry
+  Unit Serial Number structures.
+*/
+
+static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
+					 *InquiryStandardData,
+				       DAC960_SCSI_Inquiry_UnitSerialNumber_T
+					 *InquiryUnitSerialNumber,
+				       unsigned char *Vendor,
+				       unsigned char *Model,
+				       unsigned char *Revision,
+				       unsigned char *SerialNumber)
+{
+  int SerialNumberLength, i;
+  if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
+  for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
+    {
+      unsigned char VendorCharacter =
+	InquiryStandardData->VendorIdentification[i];
+      Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
+		   ? VendorCharacter : ' ');
+    }
+  Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
+  for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
+    {
+      unsigned char ModelCharacter =
+	InquiryStandardData->ProductIdentification[i];
+      Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
+		  ? ModelCharacter : ' ');
+    }
+  Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
+  for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
+    {
+      unsigned char RevisionCharacter =
+	InquiryStandardData->ProductRevisionLevel[i];
+      Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
+		     ? RevisionCharacter : ' ');
+    }
+  Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
+  if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
+  SerialNumberLength = InquiryUnitSerialNumber->PageLength;
+  if (SerialNumberLength >
+      sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
+    SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
+  for (i = 0; i < SerialNumberLength; i++)
+    {
+      unsigned char SerialNumberCharacter =
+	InquiryUnitSerialNumber->ProductSerialNumber[i];
+      SerialNumber[i] =
+	(SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
+	 ? SerialNumberCharacter : ' ');
+    }
+  SerialNumber[SerialNumberLength] = '\0';
+}
+
+
+/*
+  DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
+  Information for DAC960 V1 Firmware Controllers.
+*/
+
+static boolean DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
+						   *Controller)
+{
+  int LogicalDriveNumber, Channel, TargetID;
+  DAC960_Info("  Physical Devices:\n", Controller);
+  for (Channel = 0; Channel < Controller->Channels; Channel++)
+    for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
+      {
+	DAC960_SCSI_Inquiry_T *InquiryStandardData =
+	  &Controller->V1.InquiryStandardData[Channel][TargetID];
+	DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+	  &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
+	DAC960_V1_DeviceState_T *DeviceState =
+	  &Controller->V1.DeviceState[Channel][TargetID];
+	DAC960_V1_ErrorTableEntry_T *ErrorEntry =
+	  &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
+	char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
+	char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
+	char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
+	char SerialNumber[1+sizeof(InquiryUnitSerialNumber
+				   ->ProductSerialNumber)];
+	if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
+	DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
+				   Vendor, Model, Revision, SerialNumber);
+	DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
+		    Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
+		    Vendor, Model, Revision);
+	if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
+	  DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
+	if (DeviceState->Present &&
+	    DeviceState->DeviceType == DAC960_V1_DiskType)
+	  {
+	    if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
+	      DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
+			  Controller,
+			  (DeviceState->DeviceState == DAC960_V1_Device_Dead
+			   ? "Dead"
+			   : DeviceState->DeviceState
+			     == DAC960_V1_Device_WriteOnly
+			     ? "Write-Only"
+			     : DeviceState->DeviceState
+			       == DAC960_V1_Device_Online
+			       ? "Online" : "Standby"),
+			  DeviceState->DiskSize,
+			  Controller->V1.DeviceResetCount[Channel][TargetID]);
+	    else
+	      DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
+			  (DeviceState->DeviceState == DAC960_V1_Device_Dead
+			   ? "Dead"
+			   : DeviceState->DeviceState
+			     == DAC960_V1_Device_WriteOnly
+			     ? "Write-Only"
+			     : DeviceState->DeviceState
+			       == DAC960_V1_Device_Online
+			       ? "Online" : "Standby"),
+			  DeviceState->DiskSize);
+	  }
+	if (ErrorEntry->ParityErrorCount > 0 ||
+	    ErrorEntry->SoftErrorCount > 0 ||
+	    ErrorEntry->HardErrorCount > 0 ||
+	    ErrorEntry->MiscErrorCount > 0)
+	  DAC960_Info("         Errors - Parity: %d, Soft: %d, "
+		      "Hard: %d, Misc: %d\n", Controller,
+		      ErrorEntry->ParityErrorCount,
+		      ErrorEntry->SoftErrorCount,
+		      ErrorEntry->HardErrorCount,
+		      ErrorEntry->MiscErrorCount);
+      }
+  DAC960_Info("  Logical Drives:\n", Controller);
+  for (LogicalDriveNumber = 0;
+       LogicalDriveNumber < Controller->LogicalDriveCount;
+       LogicalDriveNumber++)
+    {
+      DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
+	&Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
+      DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
+		  Controller, Controller->ControllerNumber, LogicalDriveNumber,
+		  LogicalDriveInformation->RAIDLevel,
+		  (LogicalDriveInformation->LogicalDriveState
+		   == DAC960_V1_LogicalDrive_Online
+		   ? "Online"
+		   : LogicalDriveInformation->LogicalDriveState
+		     == DAC960_V1_LogicalDrive_Critical
+		     ? "Critical" : "Offline"),
+		  LogicalDriveInformation->LogicalDriveSize,
+		  (LogicalDriveInformation->WriteBack
+		   ? "Write Back" : "Write Thru"));
+    }
+  return true;
+}
+
+
+/*
+  DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
+  Information for DAC960 V2 Firmware Controllers.
+*/
+
+static boolean DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
+						   *Controller)
+{
+  int PhysicalDeviceIndex, LogicalDriveNumber;
+  DAC960_Info("  Physical Devices:\n", Controller);
+  for (PhysicalDeviceIndex = 0;
+       PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
+       PhysicalDeviceIndex++)
+    {
+      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
+	Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
+      DAC960_SCSI_Inquiry_T *InquiryStandardData =
+	(DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
+      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+	Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
+      char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
+      char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
+      char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
+      char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
+      if (PhysicalDeviceInfo == NULL) break;
+      DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
+				 Vendor, Model, Revision, SerialNumber);
+      DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
+		  Controller,
+		  PhysicalDeviceInfo->Channel,
+		  PhysicalDeviceInfo->TargetID,
+		  (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
+		  Vendor, Model, Revision);
+      if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
+	DAC960_Info("         %sAsynchronous\n", Controller,
+		    (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
+		     ? "Wide " :""));
+      else
+	DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
+		    (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
+		     ? "Wide " :""),
+		    (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
+		     * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
+      if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
+	DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
+      if (PhysicalDeviceInfo->PhysicalDeviceState ==
+	  DAC960_V2_Device_Unconfigured)
+	continue;
+      DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
+		  (PhysicalDeviceInfo->PhysicalDeviceState
+		   == DAC960_V2_Device_Online
+		   ? "Online"
+		   : PhysicalDeviceInfo->PhysicalDeviceState
+		     == DAC960_V2_Device_Rebuild
+		     ? "Rebuild"
+		     : PhysicalDeviceInfo->PhysicalDeviceState
+		       == DAC960_V2_Device_Missing
+		       ? "Missing"
+		       : PhysicalDeviceInfo->PhysicalDeviceState
+			 == DAC960_V2_Device_Critical
+			 ? "Critical"
+			 : PhysicalDeviceInfo->PhysicalDeviceState
+			   == DAC960_V2_Device_Dead
+			   ? "Dead"
+			   : PhysicalDeviceInfo->PhysicalDeviceState
+			     == DAC960_V2_Device_SuspectedDead
+			     ? "Suspected-Dead"
+			     : PhysicalDeviceInfo->PhysicalDeviceState
+			       == DAC960_V2_Device_CommandedOffline
+			       ? "Commanded-Offline"
+			       : PhysicalDeviceInfo->PhysicalDeviceState
+				 == DAC960_V2_Device_Standby
+				 ? "Standby" : "Unknown"),
+		  PhysicalDeviceInfo->ConfigurableDeviceSize);
+      if (PhysicalDeviceInfo->ParityErrors == 0 &&
+	  PhysicalDeviceInfo->SoftErrors == 0 &&
+	  PhysicalDeviceInfo->HardErrors == 0 &&
+	  PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
+	  PhysicalDeviceInfo->CommandTimeouts == 0 &&
+	  PhysicalDeviceInfo->Retries == 0 &&
+	  PhysicalDeviceInfo->Aborts == 0 &&
+	  PhysicalDeviceInfo->PredictedFailuresDetected == 0)
+	continue;
+      DAC960_Info("         Errors - Parity: %d, Soft: %d, "
+		  "Hard: %d, Misc: %d\n", Controller,
+		  PhysicalDeviceInfo->ParityErrors,
+		  PhysicalDeviceInfo->SoftErrors,
+		  PhysicalDeviceInfo->HardErrors,
+		  PhysicalDeviceInfo->MiscellaneousErrors);
+      DAC960_Info("                  Timeouts: %d, Retries: %d, "
+		  "Aborts: %d, Predicted: %d\n", Controller,
+		  PhysicalDeviceInfo->CommandTimeouts,
+		  PhysicalDeviceInfo->Retries,
+		  PhysicalDeviceInfo->Aborts,
+		  PhysicalDeviceInfo->PredictedFailuresDetected);
+    }
+  DAC960_Info("  Logical Drives:\n", Controller);
+  for (LogicalDriveNumber = 0;
+       LogicalDriveNumber < DAC960_MaxLogicalDrives;
+       LogicalDriveNumber++)
+    {
+      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
+	Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
+      unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
+					   "Read Cache Enabled",
+					   "Read Ahead Enabled",
+					   "Intelligent Read Ahead Enabled",
+					   "-", "-", "-", "-" };
+      unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
+					    "Logical Device Read Only",
+					    "Write Cache Enabled",
+					    "Intelligent Write Cache Enabled",
+					    "-", "-", "-", "-" };
+      unsigned char *GeometryTranslation;
+      if (LogicalDeviceInfo == NULL) continue;
+      switch (LogicalDeviceInfo->DriveGeometry)
+	{
+	case DAC960_V2_Geometry_128_32:
+	  GeometryTranslation = "128/32";
+	  break;
+	case DAC960_V2_Geometry_255_63:
+	  GeometryTranslation = "255/63";
+	  break;
+	default:
+	  GeometryTranslation = "Invalid";
+	  DAC960_Error("Illegal Logical Device Geometry %d\n",
+		       Controller, LogicalDeviceInfo->DriveGeometry);
+	  break;
+	}
+      DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
+		  Controller, Controller->ControllerNumber, LogicalDriveNumber,
+		  LogicalDeviceInfo->RAIDLevel,
+		  (LogicalDeviceInfo->LogicalDeviceState
+		   == DAC960_V2_LogicalDevice_Online
+		   ? "Online"
+		   : LogicalDeviceInfo->LogicalDeviceState
+		     == DAC960_V2_LogicalDevice_Critical
+		     ? "Critical" : "Offline"),
+		  LogicalDeviceInfo->ConfigurableDeviceSize);
+      DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
+		  Controller,
+		  (LogicalDeviceInfo->LogicalDeviceControl
+				     .LogicalDeviceInitialized
+		   ? "Initialized" : "Uninitialized"),
+		  GeometryTranslation);
+      if (LogicalDeviceInfo->StripeSize == 0)
+	{
+	  if (LogicalDeviceInfo->CacheLineSize == 0)
+	    DAC960_Info("                  Stripe Size: N/A, "
+			"Segment Size: N/A\n", Controller);
+	  else
+	    DAC960_Info("                  Stripe Size: N/A, "
+			"Segment Size: %dKB\n", Controller,
+			1 << (LogicalDeviceInfo->CacheLineSize - 2));
+	}
+      else
+	{
+	  if (LogicalDeviceInfo->CacheLineSize == 0)
+	    DAC960_Info("                  Stripe Size: %dKB, "
+			"Segment Size: N/A\n", Controller,
+			1 << (LogicalDeviceInfo->StripeSize - 2));
+	  else
+	    DAC960_Info("                  Stripe Size: %dKB, "
+			"Segment Size: %dKB\n", Controller,
+			1 << (LogicalDeviceInfo->StripeSize - 2),
+			1 << (LogicalDeviceInfo->CacheLineSize - 2));
+	}
+      DAC960_Info("                  %s, %s\n", Controller,
+		  ReadCacheStatus[
+		    LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
+		  WriteCacheStatus[
+		    LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
+      if (LogicalDeviceInfo->SoftErrors > 0 ||
+	  LogicalDeviceInfo->CommandsFailed > 0 ||
+	  LogicalDeviceInfo->DeferredWriteErrors)
+	DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
+		    "Deferred Write: %d\n", Controller,
+		    LogicalDeviceInfo->SoftErrors,
+		    LogicalDeviceInfo->CommandsFailed,
+		    LogicalDeviceInfo->DeferredWriteErrors);
+
+    }
+  return true;
+}
+
+/*
+  DAC960_RegisterBlockDevice registers the Block Device structures
+  associated with Controller.
+*/
+
+static boolean DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
+{
+  int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
+  int n;
+
+  /*
+    Register the Block Device Major Number for this DAC960 Controller.
+  */
+  if (register_blkdev(MajorNumber, "dac960") < 0)
+      return false;
+
+  for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
+	struct gendisk *disk = Controller->disks[n];
+  	struct request_queue *RequestQueue;
+
+	/* for now, let all request queues share controller's lock */
+  	RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
+  	if (!RequestQueue) {
+		printk("DAC960: failure to allocate request queue\n");
+		continue;
+  	}
+  	Controller->RequestQueue[n] = RequestQueue;
+  	blk_queue_bounce_limit(RequestQueue, Controller->BounceBufferLimit);
+  	RequestQueue->queuedata = Controller;
+  	blk_queue_max_hw_segments(RequestQueue, Controller->DriverScatterGatherLimit);
+	blk_queue_max_phys_segments(RequestQueue, Controller->DriverScatterGatherLimit);
+	blk_queue_max_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
+	disk->queue = RequestQueue;
+	sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
+	sprintf(disk->devfs_name, "rd/host%d/target%d", Controller->ControllerNumber, n);
+	disk->major = MajorNumber;
+	disk->first_minor = n << DAC960_MaxPartitionsBits;
+	disk->fops = &DAC960_BlockDeviceOperations;
+   }
+  /*
+    Indicate the Block Device Registration completed successfully,
+  */
+  return true;
+}
+
+
+/*
+  DAC960_UnregisterBlockDevice unregisters the Block Device structures
+  associated with Controller.
+*/
+
+static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
+{
+  int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
+  int disk;
+
+  /* does order matter when deleting gendisk and cleanup in request queue? */
+  for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
+	del_gendisk(Controller->disks[disk]);
+	blk_cleanup_queue(Controller->RequestQueue[disk]);
+	Controller->RequestQueue[disk] = NULL;
+  }
+
+  /*
+    Unregister the Block Device Major Number for this DAC960 Controller.
+  */
+  unregister_blkdev(MajorNumber, "dac960");
+}
+
+/*
+  DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
+  Information Partition Sector Counts and Block Sizes.
+*/
+
+static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
+{
+	int disk;
+	for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
+		set_capacity(Controller->disks[disk], disk_size(Controller, disk));
+}
+
+/*
+  DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
+  the Error Status Register when the driver performs the BIOS handshaking.
+  It returns true for fatal errors and false otherwise.
+*/
+
+static boolean DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
+					unsigned char ErrorStatus,
+					unsigned char Parameter0,
+					unsigned char Parameter1)
+{
+  switch (ErrorStatus)
+    {
+    case 0x00:
+      DAC960_Notice("Physical Device %d:%d Not Responding\n",
+		    Controller, Parameter1, Parameter0);
+      break;
+    case 0x08:
+      if (Controller->DriveSpinUpMessageDisplayed) break;
+      DAC960_Notice("Spinning Up Drives\n", Controller);
+      Controller->DriveSpinUpMessageDisplayed = true;
+      break;
+    case 0x30:
+      DAC960_Notice("Configuration Checksum Error\n", Controller);
+      break;
+    case 0x60:
+      DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
+      break;
+    case 0x70:
+      DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
+      break;
+    case 0x90:
+      DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
+		    Controller, Parameter1, Parameter0);
+      break;
+    case 0xA0:
+      DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
+      break;
+    case 0xB0:
+      DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
+      break;
+    case 0xD0:
+      DAC960_Notice("New Controller Configuration Found\n", Controller);
+      break;
+    case 0xF0:
+      DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
+      return true;
+    default:
+      DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
+		   Controller, ErrorStatus);
+      return true;
+    }
+  return false;
+}
+
+
+/*
+ * DAC960_DetectCleanup releases the resources that were allocated
+ * during DAC960_DetectController().  DAC960_DetectController can
+ * has several internal failure points, so not ALL resources may 
+ * have been allocated.  It's important to free only
+ * resources that HAVE been allocated.  The code below always
+ * tests that the resource has been allocated before attempting to
+ * free it.
+ */
+static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
+{
+  int i;
+
+  /* Free the memory mailbox, status, and related structures */
+  free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
+  if (Controller->MemoryMappedAddress) {
+  	switch(Controller->HardwareType)
+  	{
+		case DAC960_BA_Controller:
+			DAC960_BA_DisableInterrupts(Controller->BaseAddress);
+			break;
+		case DAC960_LP_Controller:
+			DAC960_LP_DisableInterrupts(Controller->BaseAddress);
+			break;
+		case DAC960_LA_Controller:
+			DAC960_LA_DisableInterrupts(Controller->BaseAddress);
+			break;
+		case DAC960_PG_Controller:
+			DAC960_PG_DisableInterrupts(Controller->BaseAddress);
+			break;
+		case DAC960_PD_Controller:
+			DAC960_PD_DisableInterrupts(Controller->BaseAddress);
+			break;
+		case DAC960_P_Controller:
+			DAC960_PD_DisableInterrupts(Controller->BaseAddress);
+			break;
+  	}
+  	iounmap(Controller->MemoryMappedAddress);
+  }
+  if (Controller->IRQ_Channel)
+  	free_irq(Controller->IRQ_Channel, Controller);
+  if (Controller->IO_Address)
+	release_region(Controller->IO_Address, 0x80);
+  pci_disable_device(Controller->PCIDevice);
+  for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
+       put_disk(Controller->disks[i]);
+  DAC960_Controllers[Controller->ControllerNumber] = NULL;
+  kfree(Controller);
+}
+
+
+/*
+  DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
+  PCI RAID Controllers by interrogating the PCI Configuration Space for
+  Controller Type.
+*/
+
+static DAC960_Controller_T * 
+DAC960_DetectController(struct pci_dev *PCI_Device,
+			const struct pci_device_id *entry)
+{
+  struct DAC960_privdata *privdata =
+	  	(struct DAC960_privdata *)entry->driver_data;
+  irqreturn_t (*InterruptHandler)(int, void *, struct pt_regs *) =
+	  	privdata->InterruptHandler;
+  unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
+  DAC960_Controller_T *Controller = NULL;
+  unsigned char DeviceFunction = PCI_Device->devfn;
+  unsigned char ErrorStatus, Parameter0, Parameter1;
+  unsigned int IRQ_Channel;
+  void __iomem *BaseAddress;
+  int i;
+
+  Controller = (DAC960_Controller_T *)
+	kmalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
+  if (Controller == NULL) {
+	DAC960_Error("Unable to allocate Controller structure for "
+                       "Controller at\n", NULL);
+	return NULL;
+  }
+  memset(Controller, 0, sizeof(DAC960_Controller_T));
+  Controller->ControllerNumber = DAC960_ControllerCount;
+  DAC960_Controllers[DAC960_ControllerCount++] = Controller;
+  Controller->Bus = PCI_Device->bus->number;
+  Controller->FirmwareType = privdata->FirmwareType;
+  Controller->HardwareType = privdata->HardwareType;
+  Controller->Device = DeviceFunction >> 3;
+  Controller->Function = DeviceFunction & 0x7;
+  Controller->PCIDevice = PCI_Device;
+  strcpy(Controller->FullModelName, "DAC960");
+
+  if (pci_enable_device(PCI_Device))
+	goto Failure;
+
+  switch (Controller->HardwareType)
+  {
+	case DAC960_BA_Controller:
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
+	  break;
+	case DAC960_LP_Controller:
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
+	  break;
+	case DAC960_LA_Controller:
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
+	  break;
+	case DAC960_PG_Controller:
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
+	  break;
+	case DAC960_PD_Controller:
+	  Controller->IO_Address = pci_resource_start(PCI_Device, 0);
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
+	  break;
+	case DAC960_P_Controller:
+	  Controller->IO_Address = pci_resource_start(PCI_Device, 0);
+	  Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
+	  break;
+  }
+
+  pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
+  for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
+	Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
+	if (!Controller->disks[i])
+		goto Failure;
+	Controller->disks[i]->private_data = (void *)((long)i);
+  }
+  init_waitqueue_head(&Controller->CommandWaitQueue);
+  init_waitqueue_head(&Controller->HealthStatusWaitQueue);
+  spin_lock_init(&Controller->queue_lock);
+  DAC960_AnnounceDriver(Controller);
+  /*
+    Map the Controller Register Window.
+  */
+ if (MemoryWindowSize < PAGE_SIZE)
+	MemoryWindowSize = PAGE_SIZE;
+  Controller->MemoryMappedAddress =
+	ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
+  Controller->BaseAddress =
+	Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
+  if (Controller->MemoryMappedAddress == NULL)
+  {
+	  DAC960_Error("Unable to map Controller Register Window for "
+		       "Controller at\n", Controller);
+	  goto Failure;
+  }
+  BaseAddress = Controller->BaseAddress;
+  switch (Controller->HardwareType)
+  {
+	case DAC960_BA_Controller:
+	  DAC960_BA_DisableInterrupts(BaseAddress);
+	  DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_BA_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_BA_EnableInterrupts(BaseAddress);
+	  Controller->QueueCommand = DAC960_BA_QueueCommand;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V2_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V2_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V2_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V2_QueueReadWriteCommand;
+	  break;
+	case DAC960_LP_Controller:
+	  DAC960_LP_DisableInterrupts(BaseAddress);
+	  DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_LP_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_LP_EnableInterrupts(BaseAddress);
+	  Controller->QueueCommand = DAC960_LP_QueueCommand;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V2_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V2_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V2_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V2_QueueReadWriteCommand;
+	  break;
+	case DAC960_LA_Controller:
+	  DAC960_LA_DisableInterrupts(BaseAddress);
+	  DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_LA_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_LA_EnableInterrupts(BaseAddress);
+	  if (Controller->V1.DualModeMemoryMailboxInterface)
+	    Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
+	  else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V1_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V1_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V1_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V1_QueueReadWriteCommand;
+	  break;
+	case DAC960_PG_Controller:
+	  DAC960_PG_DisableInterrupts(BaseAddress);
+	  DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_PG_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to Enable Memory Mailbox Interface "
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_PG_EnableInterrupts(BaseAddress);
+	  if (Controller->V1.DualModeMemoryMailboxInterface)
+	    Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
+	  else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V1_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V1_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V1_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V1_QueueReadWriteCommand;
+	  break;
+	case DAC960_PD_Controller:
+	  if (!request_region(Controller->IO_Address, 0x80,
+			      Controller->FullModelName)) {
+		DAC960_Error("IO port 0x%d busy for Controller at\n",
+			     Controller, Controller->IO_Address);
+		goto Failure;
+	  }
+	  DAC960_PD_DisableInterrupts(BaseAddress);
+	  DAC960_PD_AcknowledgeStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_PD_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to allocate DMA mapped memory "
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_PD_EnableInterrupts(BaseAddress);
+	  Controller->QueueCommand = DAC960_PD_QueueCommand;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V1_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V1_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V1_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V1_QueueReadWriteCommand;
+	  break;
+	case DAC960_P_Controller:
+	  if (!request_region(Controller->IO_Address, 0x80,
+			      Controller->FullModelName)){
+		DAC960_Error("IO port 0x%d busy for Controller at\n",
+		   	     Controller, Controller->IO_Address);
+		goto Failure;
+	  }
+	  DAC960_PD_DisableInterrupts(BaseAddress);
+	  DAC960_PD_AcknowledgeStatus(BaseAddress);
+	  udelay(1000);
+	  while (DAC960_PD_InitializationInProgressP(BaseAddress))
+	    {
+	      if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
+					    &Parameter0, &Parameter1) &&
+		  DAC960_ReportErrorStatus(Controller, ErrorStatus,
+					   Parameter0, Parameter1))
+		goto Failure;
+	      udelay(10);
+	    }
+	  if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
+	    {
+	      DAC960_Error("Unable to allocate DMA mapped memory"
+			   "for Controller at\n", Controller);
+	      goto Failure;
+	    }
+	  DAC960_PD_EnableInterrupts(BaseAddress);
+	  Controller->QueueCommand = DAC960_P_QueueCommand;
+	  Controller->ReadControllerConfiguration =
+	    DAC960_V1_ReadControllerConfiguration;
+	  Controller->ReadDeviceConfiguration =
+	    DAC960_V1_ReadDeviceConfiguration;
+	  Controller->ReportDeviceConfiguration =
+	    DAC960_V1_ReportDeviceConfiguration;
+	  Controller->QueueReadWriteCommand =
+	    DAC960_V1_QueueReadWriteCommand;
+	  break;
+  }
+  /*
+     Acquire shared access to the IRQ Channel.
+  */
+  IRQ_Channel = PCI_Device->irq;
+  if (request_irq(IRQ_Channel, InterruptHandler, SA_SHIRQ,
+		      Controller->FullModelName, Controller) < 0)
+  {
+	DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
+		       Controller, Controller->IRQ_Channel);
+	goto Failure;
+  }
+  Controller->IRQ_Channel = IRQ_Channel;
+  Controller->InitialCommand.CommandIdentifier = 1;
+  Controller->InitialCommand.Controller = Controller;
+  Controller->Commands[0] = &Controller->InitialCommand;
+  Controller->FreeCommands = &Controller->InitialCommand;
+  return Controller;
+      
+Failure:
+  if (Controller->IO_Address == 0)
+	DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
+		     "PCI Address 0x%X\n", Controller,
+		     Controller->Bus, Controller->Device,
+		     Controller->Function, Controller->PCI_Address);
+  else
+	DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
+			"0x%X PCI Address 0x%X\n", Controller,
+			Controller->Bus, Controller->Device,
+			Controller->Function, Controller->IO_Address,
+			Controller->PCI_Address);
+  DAC960_DetectCleanup(Controller);
+  DAC960_ControllerCount--;
+  return NULL;
+}
+
+/*
+  DAC960_InitializeController initializes Controller.
+*/
+
+static boolean 
+DAC960_InitializeController(DAC960_Controller_T *Controller)
+{
+  if (DAC960_ReadControllerConfiguration(Controller) &&
+      DAC960_ReportControllerConfiguration(Controller) &&
+      DAC960_CreateAuxiliaryStructures(Controller) &&
+      DAC960_ReadDeviceConfiguration(Controller) &&
+      DAC960_ReportDeviceConfiguration(Controller) &&
+      DAC960_RegisterBlockDevice(Controller))
+    {
+      /*
+	Initialize the Monitoring Timer.
+      */
+      init_timer(&Controller->MonitoringTimer);
+      Controller->MonitoringTimer.expires =
+	jiffies + DAC960_MonitoringTimerInterval;
+      Controller->MonitoringTimer.data = (unsigned long) Controller;
+      Controller->MonitoringTimer.function = DAC960_MonitoringTimerFunction;
+      add_timer(&Controller->MonitoringTimer);
+      Controller->ControllerInitialized = true;
+      return true;
+    }
+  return false;
+}
+
+
+/*
+  DAC960_FinalizeController finalizes Controller.
+*/
+
+static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
+{
+  if (Controller->ControllerInitialized)
+    {
+      unsigned long flags;
+
+      /*
+       * Acquiring and releasing lock here eliminates
+       * a very low probability race.
+       *
+       * The code below allocates controller command structures
+       * from the free list without holding the controller lock.
+       * This is safe assuming there is no other activity on
+       * the controller at the time.
+       * 
+       * But, there might be a monitoring command still
+       * in progress.  Setting the Shutdown flag while holding
+       * the lock ensures that there is no monitoring command
+       * in the interrupt handler currently, and any monitoring
+       * commands that complete from this time on will NOT return
+       * their command structure to the free list.
+       */
+
+      spin_lock_irqsave(&Controller->queue_lock, flags);
+      Controller->ShutdownMonitoringTimer = 1;
+      spin_unlock_irqrestore(&Controller->queue_lock, flags);
+
+      del_timer_sync(&Controller->MonitoringTimer);
+      if (Controller->FirmwareType == DAC960_V1_Controller)
+	{
+	  DAC960_Notice("Flushing Cache...", Controller);
+	  DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
+	  DAC960_Notice("done\n", Controller);
+
+	  if (Controller->HardwareType == DAC960_PD_Controller)
+	      release_region(Controller->IO_Address, 0x80);
+	}
+      else
+	{
+	  DAC960_Notice("Flushing Cache...", Controller);
+	  DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
+				    DAC960_V2_RAID_Controller);
+	  DAC960_Notice("done\n", Controller);
+	}
+    }
+  DAC960_UnregisterBlockDevice(Controller);
+  DAC960_DestroyAuxiliaryStructures(Controller);
+  DAC960_DestroyProcEntries(Controller);
+  DAC960_DetectCleanup(Controller);
+}
+
+
+/*
+  DAC960_Probe verifies controller's existence and
+  initializes the DAC960 Driver for that controller.
+*/
+
+static int 
+DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
+{
+  int disk;
+  DAC960_Controller_T *Controller;
+
+  if (DAC960_ControllerCount == DAC960_MaxControllers)
+  {
+	DAC960_Error("More than %d DAC960 Controllers detected - "
+                       "ignoring from Controller at\n",
+                       NULL, DAC960_MaxControllers);
+	return -ENODEV;
+  }
+
+  Controller = DAC960_DetectController(dev, entry);
+  if (!Controller)
+	return -ENODEV;
+
+  if (!DAC960_InitializeController(Controller)) {
+  	DAC960_FinalizeController(Controller);
+	return -ENODEV;
+  }
+
+  for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
+        set_capacity(Controller->disks[disk], disk_size(Controller, disk));
+        add_disk(Controller->disks[disk]);
+  }
+  DAC960_CreateProcEntries(Controller);
+  return 0;
+}
+
+
+/*
+  DAC960_Finalize finalizes the DAC960 Driver.
+*/
+
+static void DAC960_Remove(struct pci_dev *PCI_Device)
+{
+  int Controller_Number = (long)pci_get_drvdata(PCI_Device);
+  DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
+  if (Controller != NULL)
+      DAC960_FinalizeController(Controller);
+}
+
+
+/*
+  DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
+  DAC960 V1 Firmware Controllers.
+*/
+
+static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
+					Command->V1.ScatterGatherList;
+  struct scatterlist *ScatterList = Command->V1.ScatterList;
+
+  DAC960_V1_ClearCommand(Command);
+
+  if (Command->SegmentCount == 1)
+    {
+      if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
+	CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
+      else 
+        CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
+
+      CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
+      CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
+      CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
+      CommandMailbox->Type5.BusAddress =
+			(DAC960_BusAddress32_T)sg_dma_address(ScatterList);	
+    }
+  else
+    {
+      int i;
+
+      if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
+	CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
+      else
+	CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
+
+      CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
+      CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
+      CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
+      CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
+
+      CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
+
+      for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
+		ScatterGatherList->SegmentDataPointer =
+			(DAC960_BusAddress32_T)sg_dma_address(ScatterList);
+		ScatterGatherList->SegmentByteCount =
+			(DAC960_ByteCount32_T)sg_dma_len(ScatterList);
+      }
+    }
+  DAC960_QueueCommand(Command);
+}
+
+
+/*
+  DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
+  DAC960 V2 Firmware Controllers.
+*/
+
+static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  struct scatterlist *ScatterList = Command->V2.ScatterList;
+
+  DAC960_V2_ClearCommand(Command);
+
+  CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
+  CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
+    (Command->DmaDirection == PCI_DMA_FROMDEVICE);
+  CommandMailbox->SCSI_10.DataTransferSize =
+    Command->BlockCount << DAC960_BlockSizeBits;
+  CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
+  CommandMailbox->SCSI_10.PhysicalDevice =
+    Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
+  CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
+  CommandMailbox->SCSI_10.CDBLength = 10;
+  CommandMailbox->SCSI_10.SCSI_CDB[0] =
+    (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
+  CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
+  CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
+  CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
+  CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
+  CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
+  CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
+
+  if (Command->SegmentCount == 1)
+    {
+      CommandMailbox->SCSI_10.DataTransferMemoryAddress
+			     .ScatterGatherSegments[0]
+			     .SegmentDataPointer =
+	(DAC960_BusAddress64_T)sg_dma_address(ScatterList);
+      CommandMailbox->SCSI_10.DataTransferMemoryAddress
+			     .ScatterGatherSegments[0]
+			     .SegmentByteCount =
+	CommandMailbox->SCSI_10.DataTransferSize;
+    }
+  else
+    {
+      DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
+      int i;
+
+      if (Command->SegmentCount > 2)
+	{
+          ScatterGatherList = Command->V2.ScatterGatherList;
+	  CommandMailbox->SCSI_10.CommandControlBits
+			 .AdditionalScatterGatherListMemory = true;
+	  CommandMailbox->SCSI_10.DataTransferMemoryAddress
+		.ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
+	  CommandMailbox->SCSI_10.DataTransferMemoryAddress
+			 .ExtendedScatterGather.ScatterGatherList0Address =
+	    Command->V2.ScatterGatherListDMA;
+	}
+      else
+	ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
+				 .ScatterGatherSegments;
+
+      for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
+		ScatterGatherList->SegmentDataPointer =
+			(DAC960_BusAddress64_T)sg_dma_address(ScatterList);
+		ScatterGatherList->SegmentByteCount =
+			(DAC960_ByteCount64_T)sg_dma_len(ScatterList);
+      }
+    }
+  DAC960_QueueCommand(Command);
+}
+
+
+static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
+{
+	struct request *Request;
+	DAC960_Command_T *Command;
+
+   while(1) {
+	Request = elv_next_request(req_q);
+	if (!Request)
+		return 1;
+
+	Command = DAC960_AllocateCommand(Controller);
+	if (Command == NULL)
+		return 0;
+
+	if (rq_data_dir(Request) == READ) {
+		Command->DmaDirection = PCI_DMA_FROMDEVICE;
+		Command->CommandType = DAC960_ReadCommand;
+	} else {
+		Command->DmaDirection = PCI_DMA_TODEVICE;
+		Command->CommandType = DAC960_WriteCommand;
+	}
+	Command->Completion = Request->waiting;
+	Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
+	Command->BlockNumber = Request->sector;
+	Command->BlockCount = Request->nr_sectors;
+	Command->Request = Request;
+	blkdev_dequeue_request(Request);
+	Command->SegmentCount = blk_rq_map_sg(req_q,
+		  Command->Request, Command->cmd_sglist);
+	/* pci_map_sg MAY change the value of SegCount */
+	Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
+		 Command->SegmentCount, Command->DmaDirection);
+
+	DAC960_QueueReadWriteCommand(Command);
+  }
+}
+
+/*
+  DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
+  I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
+  this function should wait for a Command to become available if necessary.
+  This function returns true if an I/O Request was queued and false otherwise.
+*/
+static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
+{
+	int i;
+
+	if (!controller->ControllerInitialized)
+		return;
+
+	/* Do this better later! */
+	for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
+		struct request_queue *req_q = controller->RequestQueue[i];
+
+		if (req_q == NULL)
+			continue;
+
+		if (!DAC960_process_queue(controller, req_q)) {
+			controller->req_q_index = i;
+			return;
+		}
+	}
+
+	if (controller->req_q_index == 0)
+		return;
+
+	for (i = 0; i < controller->req_q_index; i++) {
+		struct request_queue *req_q = controller->RequestQueue[i];
+
+		if (req_q == NULL)
+			continue;
+
+		if (!DAC960_process_queue(controller, req_q)) {
+			controller->req_q_index = i;
+			return;
+		}
+	}
+}
+
+
+/*
+  DAC960_queue_partial_rw extracts one bio from the request already
+  associated with argument command, and construct a new command block to retry I/O
+  only on that bio.  Queue that command to the controller.
+
+  This function re-uses a previously-allocated Command,
+  	there is no failure mode from trying to allocate a command.
+*/
+
+static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  struct request *Request = Command->Request;
+  struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
+
+  if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
+    Command->CommandType = DAC960_ReadRetryCommand;
+  else
+    Command->CommandType = DAC960_WriteRetryCommand;
+
+  /*
+   * We could be more efficient with these mapping requests
+   * and map only the portions that we need.  But since this
+   * code should almost never be called, just go with a
+   * simple coding.
+   */
+  (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
+
+  (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
+  /*
+   * Resubmitting the request sector at a time is really tedious.
+   * But, this should almost never happen.  So, we're willing to pay
+   * this price so that in the end, as much of the transfer is completed
+   * successfully as possible.
+   */
+  Command->SegmentCount = 1;
+  Command->BlockNumber = Request->sector;
+  Command->BlockCount = 1;
+  DAC960_QueueReadWriteCommand(Command);
+  return;
+}
+
+/*
+  DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
+*/
+
+static void DAC960_RequestFunction(struct request_queue *RequestQueue)
+{
+	DAC960_ProcessRequest(RequestQueue->queuedata);
+}
+
+/*
+  DAC960_ProcessCompletedBuffer performs completion processing for an
+  individual Buffer.
+*/
+
+static inline boolean DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
+						 boolean SuccessfulIO)
+{
+	struct request *Request = Command->Request;
+	int UpToDate;
+
+	UpToDate = 0;
+	if (SuccessfulIO)
+		UpToDate = 1;
+
+	pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
+		Command->SegmentCount, Command->DmaDirection);
+
+	 if (!end_that_request_first(Request, UpToDate, Command->BlockCount)) {
+
+ 	 	end_that_request_last(Request);
+
+		if (Command->Completion) {
+			complete(Command->Completion);
+			Command->Completion = NULL;
+		}
+		return true;
+	}
+	return false;
+}
+
+/*
+  DAC960_V1_ReadWriteError prints an appropriate error message for Command
+  when an error occurs on a Read or Write operation.
+*/
+
+static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  unsigned char *CommandName = "UNKNOWN";
+  switch (Command->CommandType)
+    {
+    case DAC960_ReadCommand:
+    case DAC960_ReadRetryCommand:
+      CommandName = "READ";
+      break;
+    case DAC960_WriteCommand:
+    case DAC960_WriteRetryCommand:
+      CommandName = "WRITE";
+      break;
+    case DAC960_MonitoringCommand:
+    case DAC960_ImmediateCommand:
+    case DAC960_QueuedCommand:
+      break;
+    }
+  switch (Command->V1.CommandStatus)
+    {
+    case DAC960_V1_IrrecoverableDataError:
+      DAC960_Error("Irrecoverable Data Error on %s:\n",
+		   Controller, CommandName);
+      break;
+    case DAC960_V1_LogicalDriveNonexistentOrOffline:
+      DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
+		   Controller, CommandName);
+      break;
+    case DAC960_V1_AccessBeyondEndOfLogicalDrive:
+      DAC960_Error("Attempt to Access Beyond End of Logical Drive "
+		   "on %s:\n", Controller, CommandName);
+      break;
+    case DAC960_V1_BadDataEncountered:
+      DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
+      break;
+    default:
+      DAC960_Error("Unexpected Error Status %04X on %s:\n",
+		   Controller, Command->V1.CommandStatus, CommandName);
+      break;
+    }
+  DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
+	       Controller, Controller->ControllerNumber,
+	       Command->LogicalDriveNumber, Command->BlockNumber,
+	       Command->BlockNumber + Command->BlockCount - 1);
+}
+
+
+/*
+  DAC960_V1_ProcessCompletedCommand performs completion processing for Command
+  for DAC960 V1 Firmware Controllers.
+*/
+
+static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_CommandType_T CommandType = Command->CommandType;
+  DAC960_V1_CommandOpcode_T CommandOpcode =
+    Command->V1.CommandMailbox.Common.CommandOpcode;
+  DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
+
+  if (CommandType == DAC960_ReadCommand ||
+      CommandType == DAC960_WriteCommand)
+    {
+
+#ifdef FORCE_RETRY_DEBUG
+      CommandStatus = DAC960_V1_IrrecoverableDataError;
+#endif
+
+      if (CommandStatus == DAC960_V1_NormalCompletion) {
+
+		if (!DAC960_ProcessCompletedRequest(Command, true))
+			BUG();
+
+      } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
+		CommandStatus == DAC960_V1_BadDataEncountered)
+	{
+	  /*
+	   * break the command down into pieces and resubmit each
+	   * piece, hoping that some of them will succeed.
+	   */
+	   DAC960_queue_partial_rw(Command);
+	   return;
+	}
+      else
+	{
+	  if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
+	    DAC960_V1_ReadWriteError(Command);
+
+	 if (!DAC960_ProcessCompletedRequest(Command, false))
+		BUG();
+	}
+    }
+  else if (CommandType == DAC960_ReadRetryCommand ||
+	   CommandType == DAC960_WriteRetryCommand)
+    {
+      boolean normal_completion;
+#ifdef FORCE_RETRY_FAILURE_DEBUG
+      static int retry_count = 1;
+#endif
+      /*
+        Perform completion processing for the portion that was
+        retried, and submit the next portion, if any.
+      */
+      normal_completion = true;
+      if (CommandStatus != DAC960_V1_NormalCompletion) {
+        normal_completion = false;
+        if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
+            DAC960_V1_ReadWriteError(Command);
+      }
+
+#ifdef FORCE_RETRY_FAILURE_DEBUG
+      if (!(++retry_count % 10000)) {
+	      printk("V1 error retry failure test\n");
+	      normal_completion = false;
+              DAC960_V1_ReadWriteError(Command);
+      }
+#endif
+
+      if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
+        DAC960_queue_partial_rw(Command);
+        return;
+      }
+    }
+
+  else if (CommandType == DAC960_MonitoringCommand)
+    {
+      if (Controller->ShutdownMonitoringTimer)
+	      return;
+      if (CommandOpcode == DAC960_V1_Enquiry)
+	{
+	  DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
+	  DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
+	  unsigned int OldCriticalLogicalDriveCount =
+	    OldEnquiry->CriticalLogicalDriveCount;
+	  unsigned int NewCriticalLogicalDriveCount =
+	    NewEnquiry->CriticalLogicalDriveCount;
+	  if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
+	    {
+	      int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
+	      while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+				"Now Exists\n", Controller,
+				LogicalDriveNumber,
+				Controller->ControllerNumber,
+				LogicalDriveNumber);
+	      Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
+	      DAC960_ComputeGenericDiskInfo(Controller);
+	    }
+	  if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
+	    {
+	      int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
+	      while (++LogicalDriveNumber < Controller->LogicalDriveCount)
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+				"No Longer Exists\n", Controller,
+				LogicalDriveNumber,
+				Controller->ControllerNumber,
+				LogicalDriveNumber);
+	      Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
+	      DAC960_ComputeGenericDiskInfo(Controller);
+	    }
+	  if (NewEnquiry->StatusFlags.DeferredWriteError !=
+	      OldEnquiry->StatusFlags.DeferredWriteError)
+	    DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
+			    (NewEnquiry->StatusFlags.DeferredWriteError
+			     ? "TRUE" : "FALSE"));
+	  if ((NewCriticalLogicalDriveCount > 0 ||
+	       NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
+	      (NewEnquiry->OfflineLogicalDriveCount > 0 ||
+	       NewEnquiry->OfflineLogicalDriveCount !=
+	       OldEnquiry->OfflineLogicalDriveCount) ||
+	      (NewEnquiry->DeadDriveCount > 0 ||
+	       NewEnquiry->DeadDriveCount !=
+	       OldEnquiry->DeadDriveCount) ||
+	      (NewEnquiry->EventLogSequenceNumber !=
+	       OldEnquiry->EventLogSequenceNumber) ||
+	      Controller->MonitoringTimerCount == 0 ||
+	      (jiffies - Controller->SecondaryMonitoringTime
+	       >= DAC960_SecondaryMonitoringInterval))
+	    {
+	      Controller->V1.NeedLogicalDriveInformation = true;
+	      Controller->V1.NewEventLogSequenceNumber =
+		NewEnquiry->EventLogSequenceNumber;
+	      Controller->V1.NeedErrorTableInformation = true;
+	      Controller->V1.NeedDeviceStateInformation = true;
+	      Controller->V1.StartDeviceStateScan = true;
+	      Controller->V1.NeedBackgroundInitializationStatus =
+		Controller->V1.BackgroundInitializationStatusSupported;
+	      Controller->SecondaryMonitoringTime = jiffies;
+	    }
+	  if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
+	      NewEnquiry->RebuildFlag
+	      == DAC960_V1_BackgroundRebuildInProgress ||
+	      OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
+	      OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
+	    {
+	      Controller->V1.NeedRebuildProgress = true;
+	      Controller->V1.RebuildProgressFirst =
+		(NewEnquiry->CriticalLogicalDriveCount <
+		 OldEnquiry->CriticalLogicalDriveCount);
+	    }
+	  if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
+	    switch (NewEnquiry->RebuildFlag)
+	      {
+	      case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
+		DAC960_Progress("Consistency Check Completed Successfully\n",
+				Controller);
+		break;
+	      case DAC960_V1_StandbyRebuildInProgress:
+	      case DAC960_V1_BackgroundRebuildInProgress:
+		break;
+	      case DAC960_V1_BackgroundCheckInProgress:
+		Controller->V1.NeedConsistencyCheckProgress = true;
+		break;
+	      case DAC960_V1_StandbyRebuildCompletedWithError:
+		DAC960_Progress("Consistency Check Completed with Error\n",
+				Controller);
+		break;
+	      case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
+		DAC960_Progress("Consistency Check Failed - "
+				"Physical Device Failed\n", Controller);
+		break;
+	      case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
+		DAC960_Progress("Consistency Check Failed - "
+				"Logical Drive Failed\n", Controller);
+		break;
+	      case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
+		DAC960_Progress("Consistency Check Failed - Other Causes\n",
+				Controller);
+		break;
+	      case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
+		DAC960_Progress("Consistency Check Successfully Terminated\n",
+				Controller);
+		break;
+	      }
+	  else if (NewEnquiry->RebuildFlag
+		   == DAC960_V1_BackgroundCheckInProgress)
+	    Controller->V1.NeedConsistencyCheckProgress = true;
+	  Controller->MonitoringAlertMode =
+	    (NewEnquiry->CriticalLogicalDriveCount > 0 ||
+	     NewEnquiry->OfflineLogicalDriveCount > 0 ||
+	     NewEnquiry->DeadDriveCount > 0);
+	  if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
+	    {
+	      Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
+	      Controller->V1.RebuildFlagPending = true;
+	    }
+	  memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
+		 sizeof(DAC960_V1_Enquiry_T));
+	}
+      else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
+	{
+	  static char
+	    *DAC960_EventMessages[] =
+	       { "killed because write recovery failed",
+		 "killed because of SCSI bus reset failure",
+		 "killed because of double check condition",
+		 "killed because it was removed",
+		 "killed because of gross error on SCSI chip",
+		 "killed because of bad tag returned from drive",
+		 "killed because of timeout on SCSI command",
+		 "killed because of reset SCSI command issued from system",
+		 "killed because busy or parity error count exceeded limit",
+		 "killed because of 'kill drive' command from system",
+		 "killed because of selection timeout",
+		 "killed due to SCSI phase sequence error",
+		 "killed due to unknown status" };
+	  DAC960_V1_EventLogEntry_T *EventLogEntry =
+	    	Controller->V1.EventLogEntry;
+	  if (EventLogEntry->SequenceNumber ==
+	      Controller->V1.OldEventLogSequenceNumber)
+	    {
+	      unsigned char SenseKey = EventLogEntry->SenseKey;
+	      unsigned char AdditionalSenseCode =
+		EventLogEntry->AdditionalSenseCode;
+	      unsigned char AdditionalSenseCodeQualifier =
+		EventLogEntry->AdditionalSenseCodeQualifier;
+	      if (SenseKey == DAC960_SenseKey_VendorSpecific &&
+		  AdditionalSenseCode == 0x80 &&
+		  AdditionalSenseCodeQualifier <
+		  sizeof(DAC960_EventMessages) / sizeof(char *))
+		DAC960_Critical("Physical Device %d:%d %s\n", Controller,
+				EventLogEntry->Channel,
+				EventLogEntry->TargetID,
+				DAC960_EventMessages[
+				  AdditionalSenseCodeQualifier]);
+	      else if (SenseKey == DAC960_SenseKey_UnitAttention &&
+		       AdditionalSenseCode == 0x29)
+		{
+		  if (Controller->MonitoringTimerCount > 0)
+		    Controller->V1.DeviceResetCount[EventLogEntry->Channel]
+						   [EventLogEntry->TargetID]++;
+		}
+	      else if (!(SenseKey == DAC960_SenseKey_NoSense ||
+			 (SenseKey == DAC960_SenseKey_NotReady &&
+			  AdditionalSenseCode == 0x04 &&
+			  (AdditionalSenseCodeQualifier == 0x01 ||
+			   AdditionalSenseCodeQualifier == 0x02))))
+		{
+		  DAC960_Critical("Physical Device %d:%d Error Log: "
+				  "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
+				  Controller,
+				  EventLogEntry->Channel,
+				  EventLogEntry->TargetID,
+				  SenseKey,
+				  AdditionalSenseCode,
+				  AdditionalSenseCodeQualifier);
+		  DAC960_Critical("Physical Device %d:%d Error Log: "
+				  "Information = %02X%02X%02X%02X "
+				  "%02X%02X%02X%02X\n",
+				  Controller,
+				  EventLogEntry->Channel,
+				  EventLogEntry->TargetID,
+				  EventLogEntry->Information[0],
+				  EventLogEntry->Information[1],
+				  EventLogEntry->Information[2],
+				  EventLogEntry->Information[3],
+				  EventLogEntry->CommandSpecificInformation[0],
+				  EventLogEntry->CommandSpecificInformation[1],
+				  EventLogEntry->CommandSpecificInformation[2],
+				  EventLogEntry->CommandSpecificInformation[3]);
+		}
+	    }
+	  Controller->V1.OldEventLogSequenceNumber++;
+	}
+      else if (CommandOpcode == DAC960_V1_GetErrorTable)
+	{
+	  DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
+	  DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
+	  int Channel, TargetID;
+	  for (Channel = 0; Channel < Controller->Channels; Channel++)
+	    for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
+	      {
+		DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
+		  &NewErrorTable->ErrorTableEntries[Channel][TargetID];
+		DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
+		  &OldErrorTable->ErrorTableEntries[Channel][TargetID];
+		if ((NewErrorEntry->ParityErrorCount !=
+		     OldErrorEntry->ParityErrorCount) ||
+		    (NewErrorEntry->SoftErrorCount !=
+		     OldErrorEntry->SoftErrorCount) ||
+		    (NewErrorEntry->HardErrorCount !=
+		     OldErrorEntry->HardErrorCount) ||
+		    (NewErrorEntry->MiscErrorCount !=
+		     OldErrorEntry->MiscErrorCount))
+		  DAC960_Critical("Physical Device %d:%d Errors: "
+				  "Parity = %d, Soft = %d, "
+				  "Hard = %d, Misc = %d\n",
+				  Controller, Channel, TargetID,
+				  NewErrorEntry->ParityErrorCount,
+				  NewErrorEntry->SoftErrorCount,
+				  NewErrorEntry->HardErrorCount,
+				  NewErrorEntry->MiscErrorCount);
+	      }
+	  memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
+		 sizeof(DAC960_V1_ErrorTable_T));
+	}
+      else if (CommandOpcode == DAC960_V1_GetDeviceState)
+	{
+	  DAC960_V1_DeviceState_T *OldDeviceState =
+	    &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
+				       [Controller->V1.DeviceStateTargetID];
+	  DAC960_V1_DeviceState_T *NewDeviceState =
+	    Controller->V1.NewDeviceState;
+	  if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
+	    DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
+			    Controller->V1.DeviceStateChannel,
+			    Controller->V1.DeviceStateTargetID,
+			    (NewDeviceState->DeviceState
+			     == DAC960_V1_Device_Dead
+			     ? "DEAD"
+			     : NewDeviceState->DeviceState
+			       == DAC960_V1_Device_WriteOnly
+			       ? "WRITE-ONLY"
+			       : NewDeviceState->DeviceState
+				 == DAC960_V1_Device_Online
+				 ? "ONLINE" : "STANDBY"));
+	  if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
+	      NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
+	    {
+	      Controller->V1.NeedDeviceInquiryInformation = true;
+	      Controller->V1.NeedDeviceSerialNumberInformation = true;
+	      Controller->V1.DeviceResetCount
+			     [Controller->V1.DeviceStateChannel]
+			     [Controller->V1.DeviceStateTargetID] = 0;
+	    }
+	  memcpy(OldDeviceState, NewDeviceState,
+		 sizeof(DAC960_V1_DeviceState_T));
+	}
+      else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
+	{
+	  int LogicalDriveNumber;
+	  for (LogicalDriveNumber = 0;
+	       LogicalDriveNumber < Controller->LogicalDriveCount;
+	       LogicalDriveNumber++)
+	    {
+	      DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
+		&Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
+	      DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
+		&(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
+	      if (NewLogicalDriveInformation->LogicalDriveState !=
+		  OldLogicalDriveInformation->LogicalDriveState)
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+				"is now %s\n", Controller,
+				LogicalDriveNumber,
+				Controller->ControllerNumber,
+				LogicalDriveNumber,
+				(NewLogicalDriveInformation->LogicalDriveState
+				 == DAC960_V1_LogicalDrive_Online
+				 ? "ONLINE"
+				 : NewLogicalDriveInformation->LogicalDriveState
+				   == DAC960_V1_LogicalDrive_Critical
+				   ? "CRITICAL" : "OFFLINE"));
+	      if (NewLogicalDriveInformation->WriteBack !=
+		  OldLogicalDriveInformation->WriteBack)
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+				"is now %s\n", Controller,
+				LogicalDriveNumber,
+				Controller->ControllerNumber,
+				LogicalDriveNumber,
+				(NewLogicalDriveInformation->WriteBack
+				 ? "WRITE BACK" : "WRITE THRU"));
+	    }
+	  memcpy(&Controller->V1.LogicalDriveInformation,
+		 Controller->V1.NewLogicalDriveInformation,
+		 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
+	}
+      else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
+	{
+	  unsigned int LogicalDriveNumber =
+	    Controller->V1.RebuildProgress->LogicalDriveNumber;
+	  unsigned int LogicalDriveSize =
+	    Controller->V1.RebuildProgress->LogicalDriveSize;
+	  unsigned int BlocksCompleted =
+	    LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
+	  if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
+	      Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
+	    CommandStatus = DAC960_V1_RebuildSuccessful;
+	  switch (CommandStatus)
+	    {
+	    case DAC960_V1_NormalCompletion:
+	      Controller->EphemeralProgressMessage = true;
+	      DAC960_Progress("Rebuild in Progress: "
+			      "Logical Drive %d (/dev/rd/c%dd%d) "
+			      "%d%% completed\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber,
+			      (100 * (BlocksCompleted >> 7))
+			      / (LogicalDriveSize >> 7));
+	      Controller->EphemeralProgressMessage = false;
+	      break;
+	    case DAC960_V1_RebuildFailed_LogicalDriveFailure:
+	      DAC960_Progress("Rebuild Failed due to "
+			      "Logical Drive Failure\n", Controller);
+	      break;
+	    case DAC960_V1_RebuildFailed_BadBlocksOnOther:
+	      DAC960_Progress("Rebuild Failed due to "
+			      "Bad Blocks on Other Drives\n", Controller);
+	      break;
+	    case DAC960_V1_RebuildFailed_NewDriveFailed:
+	      DAC960_Progress("Rebuild Failed due to "
+			      "Failure of Drive Being Rebuilt\n", Controller);
+	      break;
+	    case DAC960_V1_NoRebuildOrCheckInProgress:
+	      break;
+	    case DAC960_V1_RebuildSuccessful:
+	      DAC960_Progress("Rebuild Completed Successfully\n", Controller);
+	      break;
+	    case DAC960_V1_RebuildSuccessfullyTerminated:
+	      DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
+	      break;
+	    }
+	  Controller->V1.LastRebuildStatus = CommandStatus;
+	  if (CommandType != DAC960_MonitoringCommand &&
+	      Controller->V1.RebuildStatusPending)
+	    {
+	      Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
+	      Controller->V1.RebuildStatusPending = false;
+	    }
+	  else if (CommandType == DAC960_MonitoringCommand &&
+		   CommandStatus != DAC960_V1_NormalCompletion &&
+		   CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
+	    {
+	      Controller->V1.PendingRebuildStatus = CommandStatus;
+	      Controller->V1.RebuildStatusPending = true;
+	    }
+	}
+      else if (CommandOpcode == DAC960_V1_RebuildStat)
+	{
+	  unsigned int LogicalDriveNumber =
+	    Controller->V1.RebuildProgress->LogicalDriveNumber;
+	  unsigned int LogicalDriveSize =
+	    Controller->V1.RebuildProgress->LogicalDriveSize;
+	  unsigned int BlocksCompleted =
+	    LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
+	  if (CommandStatus == DAC960_V1_NormalCompletion)
+	    {
+	      Controller->EphemeralProgressMessage = true;
+	      DAC960_Progress("Consistency Check in Progress: "
+			      "Logical Drive %d (/dev/rd/c%dd%d) "
+			      "%d%% completed\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber,
+			      (100 * (BlocksCompleted >> 7))
+			      / (LogicalDriveSize >> 7));
+	      Controller->EphemeralProgressMessage = false;
+	    }
+	}
+      else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
+	{
+	  unsigned int LogicalDriveNumber =
+	    Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
+	  unsigned int LogicalDriveSize =
+	    Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
+	  unsigned int BlocksCompleted =
+	    Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
+	  switch (CommandStatus)
+	    {
+	    case DAC960_V1_NormalCompletion:
+	      switch (Controller->V1.BackgroundInitializationStatus->Status)
+		{
+		case DAC960_V1_BackgroundInitializationInvalid:
+		  break;
+		case DAC960_V1_BackgroundInitializationStarted:
+		  DAC960_Progress("Background Initialization Started\n",
+				  Controller);
+		  break;
+		case DAC960_V1_BackgroundInitializationInProgress:
+		  if (BlocksCompleted ==
+		      Controller->V1.LastBackgroundInitializationStatus.
+				BlocksCompleted &&
+		      LogicalDriveNumber ==
+		      Controller->V1.LastBackgroundInitializationStatus.
+				LogicalDriveNumber)
+		    break;
+		  Controller->EphemeralProgressMessage = true;
+		  DAC960_Progress("Background Initialization in Progress: "
+				  "Logical Drive %d (/dev/rd/c%dd%d) "
+				  "%d%% completed\n",
+				  Controller, LogicalDriveNumber,
+				  Controller->ControllerNumber,
+				  LogicalDriveNumber,
+				  (100 * (BlocksCompleted >> 7))
+				  / (LogicalDriveSize >> 7));
+		  Controller->EphemeralProgressMessage = false;
+		  break;
+		case DAC960_V1_BackgroundInitializationSuspended:
+		  DAC960_Progress("Background Initialization Suspended\n",
+				  Controller);
+		  break;
+		case DAC960_V1_BackgroundInitializationCancelled:
+		  DAC960_Progress("Background Initialization Cancelled\n",
+				  Controller);
+		  break;
+		}
+	      memcpy(&Controller->V1.LastBackgroundInitializationStatus,
+		     Controller->V1.BackgroundInitializationStatus,
+		     sizeof(DAC960_V1_BackgroundInitializationStatus_T));
+	      break;
+	    case DAC960_V1_BackgroundInitSuccessful:
+	      if (Controller->V1.BackgroundInitializationStatus->Status ==
+		  DAC960_V1_BackgroundInitializationInProgress)
+		DAC960_Progress("Background Initialization "
+				"Completed Successfully\n", Controller);
+	      Controller->V1.BackgroundInitializationStatus->Status =
+		DAC960_V1_BackgroundInitializationInvalid;
+	      break;
+	    case DAC960_V1_BackgroundInitAborted:
+	      if (Controller->V1.BackgroundInitializationStatus->Status ==
+		  DAC960_V1_BackgroundInitializationInProgress)
+		DAC960_Progress("Background Initialization Aborted\n",
+				Controller);
+	      Controller->V1.BackgroundInitializationStatus->Status =
+		DAC960_V1_BackgroundInitializationInvalid;
+	      break;
+	    case DAC960_V1_NoBackgroundInitInProgress:
+	      break;
+	    }
+	} 
+      else if (CommandOpcode == DAC960_V1_DCDB)
+	{
+	   /*
+	     This is a bit ugly.
+
+	     The InquiryStandardData and 
+	     the InquiryUntitSerialNumber information
+	     retrieval operations BOTH use the DAC960_V1_DCDB
+	     commands.  the test above can't distinguish between
+	     these two cases.
+
+	     Instead, we rely on the order of code later in this
+             function to ensure that DeviceInquiryInformation commands
+             are submitted before DeviceSerialNumber commands.
+	   */
+	   if (Controller->V1.NeedDeviceInquiryInformation)
+	     {
+	        DAC960_SCSI_Inquiry_T *InquiryStandardData =
+			&Controller->V1.InquiryStandardData
+				[Controller->V1.DeviceStateChannel]
+				[Controller->V1.DeviceStateTargetID];
+	        if (CommandStatus != DAC960_V1_NormalCompletion)
+		   {
+			memset(InquiryStandardData, 0,
+				sizeof(DAC960_SCSI_Inquiry_T));
+	      		InquiryStandardData->PeripheralDeviceType = 0x1F;
+		    }
+	         else
+			memcpy(InquiryStandardData, 
+				Controller->V1.NewInquiryStandardData,
+				sizeof(DAC960_SCSI_Inquiry_T));
+	         Controller->V1.NeedDeviceInquiryInformation = false;
+              }
+	   else if (Controller->V1.NeedDeviceSerialNumberInformation) 
+              {
+	        DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+		  &Controller->V1.InquiryUnitSerialNumber
+				[Controller->V1.DeviceStateChannel]
+				[Controller->V1.DeviceStateTargetID];
+	         if (CommandStatus != DAC960_V1_NormalCompletion)
+		   {
+			memset(InquiryUnitSerialNumber, 0,
+				sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+	      		InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+		    }
+	          else
+			memcpy(InquiryUnitSerialNumber, 
+				Controller->V1.NewInquiryUnitSerialNumber,
+				sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+	      Controller->V1.NeedDeviceSerialNumberInformation = false;
+	     }
+	}
+      /*
+        Begin submitting new monitoring commands.
+       */
+      if (Controller->V1.NewEventLogSequenceNumber
+	  - Controller->V1.OldEventLogSequenceNumber > 0)
+	{
+	  Command->V1.CommandMailbox.Type3E.CommandOpcode =
+	    DAC960_V1_PerformEventLogOperation;
+	  Command->V1.CommandMailbox.Type3E.OperationType =
+	    DAC960_V1_GetEventLogEntry;
+	  Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
+	  Command->V1.CommandMailbox.Type3E.SequenceNumber =
+	    Controller->V1.OldEventLogSequenceNumber;
+	  Command->V1.CommandMailbox.Type3E.BusAddress =
+	    	Controller->V1.EventLogEntryDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedErrorTableInformation)
+	{
+	  Controller->V1.NeedErrorTableInformation = false;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode =
+	    DAC960_V1_GetErrorTable;
+	  Command->V1.CommandMailbox.Type3.BusAddress =
+	    	Controller->V1.NewErrorTableDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedRebuildProgress &&
+	  Controller->V1.RebuildProgressFirst)
+	{
+	  Controller->V1.NeedRebuildProgress = false;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode =
+	    DAC960_V1_GetRebuildProgress;
+	  Command->V1.CommandMailbox.Type3.BusAddress =
+	    Controller->V1.RebuildProgressDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedDeviceStateInformation)
+	{
+	  if (Controller->V1.NeedDeviceInquiryInformation)
+	    {
+	      DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
+	      dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
+
+	      dma_addr_t NewInquiryStandardDataDMA =
+		Controller->V1.NewInquiryStandardDataDMA;
+
+	      Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
+	      Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
+	      DCDB->Channel = Controller->V1.DeviceStateChannel;
+	      DCDB->TargetID = Controller->V1.DeviceStateTargetID;
+	      DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
+	      DCDB->EarlyStatus = false;
+	      DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
+	      DCDB->NoAutomaticRequestSense = false;
+	      DCDB->DisconnectPermitted = true;
+	      DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
+	      DCDB->BusAddress = NewInquiryStandardDataDMA;
+	      DCDB->CDBLength = 6;
+	      DCDB->TransferLengthHigh4 = 0;
+	      DCDB->SenseLength = sizeof(DCDB->SenseData);
+	      DCDB->CDB[0] = 0x12; /* INQUIRY */
+	      DCDB->CDB[1] = 0; /* EVPD = 0 */
+	      DCDB->CDB[2] = 0; /* Page Code */
+	      DCDB->CDB[3] = 0; /* Reserved */
+	      DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
+	      DCDB->CDB[5] = 0; /* Control */
+	      DAC960_QueueCommand(Command);
+	      return;
+	    }
+	  if (Controller->V1.NeedDeviceSerialNumberInformation)
+	    {
+	      DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
+	      dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
+	      dma_addr_t NewInquiryUnitSerialNumberDMA = 
+			Controller->V1.NewInquiryUnitSerialNumberDMA;
+
+	      Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
+	      Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
+	      DCDB->Channel = Controller->V1.DeviceStateChannel;
+	      DCDB->TargetID = Controller->V1.DeviceStateTargetID;
+	      DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
+	      DCDB->EarlyStatus = false;
+	      DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
+	      DCDB->NoAutomaticRequestSense = false;
+	      DCDB->DisconnectPermitted = true;
+	      DCDB->TransferLength =
+		sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+	      DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
+	      DCDB->CDBLength = 6;
+	      DCDB->TransferLengthHigh4 = 0;
+	      DCDB->SenseLength = sizeof(DCDB->SenseData);
+	      DCDB->CDB[0] = 0x12; /* INQUIRY */
+	      DCDB->CDB[1] = 1; /* EVPD = 1 */
+	      DCDB->CDB[2] = 0x80; /* Page Code */
+	      DCDB->CDB[3] = 0; /* Reserved */
+	      DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
+	      DCDB->CDB[5] = 0; /* Control */
+	      DAC960_QueueCommand(Command);
+	      return;
+	    }
+	  if (Controller->V1.StartDeviceStateScan)
+	    {
+	      Controller->V1.DeviceStateChannel = 0;
+	      Controller->V1.DeviceStateTargetID = 0;
+	      Controller->V1.StartDeviceStateScan = false;
+	    }
+	  else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
+	    {
+	      Controller->V1.DeviceStateChannel++;
+	      Controller->V1.DeviceStateTargetID = 0;
+	    }
+	  if (Controller->V1.DeviceStateChannel < Controller->Channels)
+	    {
+	      Controller->V1.NewDeviceState->DeviceState =
+		DAC960_V1_Device_Dead;
+	      Command->V1.CommandMailbox.Type3D.CommandOpcode =
+		DAC960_V1_GetDeviceState;
+	      Command->V1.CommandMailbox.Type3D.Channel =
+		Controller->V1.DeviceStateChannel;
+	      Command->V1.CommandMailbox.Type3D.TargetID =
+		Controller->V1.DeviceStateTargetID;
+	      Command->V1.CommandMailbox.Type3D.BusAddress =
+		Controller->V1.NewDeviceStateDMA;
+	      DAC960_QueueCommand(Command);
+	      return;
+	    }
+	  Controller->V1.NeedDeviceStateInformation = false;
+	}
+      if (Controller->V1.NeedLogicalDriveInformation)
+	{
+	  Controller->V1.NeedLogicalDriveInformation = false;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode =
+	    DAC960_V1_GetLogicalDriveInformation;
+	  Command->V1.CommandMailbox.Type3.BusAddress =
+	    Controller->V1.NewLogicalDriveInformationDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedRebuildProgress)
+	{
+	  Controller->V1.NeedRebuildProgress = false;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode =
+	    DAC960_V1_GetRebuildProgress;
+	  Command->V1.CommandMailbox.Type3.BusAddress =
+	    	Controller->V1.RebuildProgressDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedConsistencyCheckProgress)
+	{
+	  Controller->V1.NeedConsistencyCheckProgress = false;
+	  Command->V1.CommandMailbox.Type3.CommandOpcode =
+	    DAC960_V1_RebuildStat;
+	  Command->V1.CommandMailbox.Type3.BusAddress =
+	    Controller->V1.RebuildProgressDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V1.NeedBackgroundInitializationStatus)
+	{
+	  Controller->V1.NeedBackgroundInitializationStatus = false;
+	  Command->V1.CommandMailbox.Type3B.CommandOpcode =
+	    DAC960_V1_BackgroundInitializationControl;
+	  Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
+	  Command->V1.CommandMailbox.Type3B.BusAddress =
+	    Controller->V1.BackgroundInitializationStatusDMA;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      Controller->MonitoringTimerCount++;
+      Controller->MonitoringTimer.expires =
+	jiffies + DAC960_MonitoringTimerInterval;
+      	add_timer(&Controller->MonitoringTimer);
+    }
+  if (CommandType == DAC960_ImmediateCommand)
+    {
+      complete(Command->Completion);
+      Command->Completion = NULL;
+      return;
+    }
+  if (CommandType == DAC960_QueuedCommand)
+    {
+      DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
+      KernelCommand->CommandStatus = Command->V1.CommandStatus;
+      Command->V1.KernelCommand = NULL;
+      if (CommandOpcode == DAC960_V1_DCDB)
+	Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
+					  [KernelCommand->DCDB->TargetID] =
+	  false;
+      DAC960_DeallocateCommand(Command);
+      KernelCommand->CompletionFunction(KernelCommand);
+      return;
+    }
+  /*
+    Queue a Status Monitoring Command to the Controller using the just
+    completed Command if one was deferred previously due to lack of a
+    free Command when the Monitoring Timer Function was called.
+  */
+  if (Controller->MonitoringCommandDeferred)
+    {
+      Controller->MonitoringCommandDeferred = false;
+      DAC960_V1_QueueMonitoringCommand(Command);
+      return;
+    }
+  /*
+    Deallocate the Command.
+  */
+  DAC960_DeallocateCommand(Command);
+  /*
+    Wake up any processes waiting on a free Command.
+  */
+  wake_up(&Controller->CommandWaitQueue);
+}
+
+
+/*
+  DAC960_V2_ReadWriteError prints an appropriate error message for Command
+  when an error occurs on a Read or Write operation.
+*/
+
+static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
+				   "NOT READY", "MEDIUM ERROR",
+				   "HARDWARE ERROR", "ILLEGAL REQUEST",
+				   "UNIT ATTENTION", "DATA PROTECT",
+				   "BLANK CHECK", "VENDOR-SPECIFIC",
+				   "COPY ABORTED", "ABORTED COMMAND",
+				   "EQUAL", "VOLUME OVERFLOW",
+				   "MISCOMPARE", "RESERVED" };
+  unsigned char *CommandName = "UNKNOWN";
+  switch (Command->CommandType)
+    {
+    case DAC960_ReadCommand:
+    case DAC960_ReadRetryCommand:
+      CommandName = "READ";
+      break;
+    case DAC960_WriteCommand:
+    case DAC960_WriteRetryCommand:
+      CommandName = "WRITE";
+      break;
+    case DAC960_MonitoringCommand:
+    case DAC960_ImmediateCommand:
+    case DAC960_QueuedCommand:
+      break;
+    }
+  DAC960_Error("Error Condition %s on %s:\n", Controller,
+	       SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
+  DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
+	       Controller, Controller->ControllerNumber,
+	       Command->LogicalDriveNumber, Command->BlockNumber,
+	       Command->BlockNumber + Command->BlockCount - 1);
+}
+
+
+/*
+  DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
+  occurs.
+*/
+
+static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
+				  DAC960_V2_Event_T *Event)
+{
+  DAC960_SCSI_RequestSense_T *RequestSense =
+    (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
+  unsigned char MessageBuffer[DAC960_LineBufferSize];
+  static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
+    { /* Physical Device Events (0x0000 - 0x007F) */
+      { 0x0001, "P Online" },
+      { 0x0002, "P Standby" },
+      { 0x0005, "P Automatic Rebuild Started" },
+      { 0x0006, "P Manual Rebuild Started" },
+      { 0x0007, "P Rebuild Completed" },
+      { 0x0008, "P Rebuild Cancelled" },
+      { 0x0009, "P Rebuild Failed for Unknown Reasons" },
+      { 0x000A, "P Rebuild Failed due to New Physical Device" },
+      { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
+      { 0x000C, "S Offline" },
+      { 0x000D, "P Found" },
+      { 0x000E, "P Removed" },
+      { 0x000F, "P Unconfigured" },
+      { 0x0010, "P Expand Capacity Started" },
+      { 0x0011, "P Expand Capacity Completed" },
+      { 0x0012, "P Expand Capacity Failed" },
+      { 0x0013, "P Command Timed Out" },
+      { 0x0014, "P Command Aborted" },
+      { 0x0015, "P Command Retried" },
+      { 0x0016, "P Parity Error" },
+      { 0x0017, "P Soft Error" },
+      { 0x0018, "P Miscellaneous Error" },
+      { 0x0019, "P Reset" },
+      { 0x001A, "P Active Spare Found" },
+      { 0x001B, "P Warm Spare Found" },
+      { 0x001C, "S Sense Data Received" },
+      { 0x001D, "P Initialization Started" },
+      { 0x001E, "P Initialization Completed" },
+      { 0x001F, "P Initialization Failed" },
+      { 0x0020, "P Initialization Cancelled" },
+      { 0x0021, "P Failed because Write Recovery Failed" },
+      { 0x0022, "P Failed because SCSI Bus Reset Failed" },
+      { 0x0023, "P Failed because of Double Check Condition" },
+      { 0x0024, "P Failed because Device Cannot Be Accessed" },
+      { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
+      { 0x0026, "P Failed because of Bad Tag from Device" },
+      { 0x0027, "P Failed because of Command Timeout" },
+      { 0x0028, "P Failed because of System Reset" },
+      { 0x0029, "P Failed because of Busy Status or Parity Error" },
+      { 0x002A, "P Failed because Host Set Device to Failed State" },
+      { 0x002B, "P Failed because of Selection Timeout" },
+      { 0x002C, "P Failed because of SCSI Bus Phase Error" },
+      { 0x002D, "P Failed because Device Returned Unknown Status" },
+      { 0x002E, "P Failed because Device Not Ready" },
+      { 0x002F, "P Failed because Device Not Found at Startup" },
+      { 0x0030, "P Failed because COD Write Operation Failed" },
+      { 0x0031, "P Failed because BDT Write Operation Failed" },
+      { 0x0039, "P Missing at Startup" },
+      { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
+      { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
+      { 0x003D, "P Standby Rebuild Started" },
+      /* Logical Device Events (0x0080 - 0x00FF) */
+      { 0x0080, "M Consistency Check Started" },
+      { 0x0081, "M Consistency Check Completed" },
+      { 0x0082, "M Consistency Check Cancelled" },
+      { 0x0083, "M Consistency Check Completed With Errors" },
+      { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
+      { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
+      { 0x0086, "L Offline" },
+      { 0x0087, "L Critical" },
+      { 0x0088, "L Online" },
+      { 0x0089, "M Automatic Rebuild Started" },
+      { 0x008A, "M Manual Rebuild Started" },
+      { 0x008B, "M Rebuild Completed" },
+      { 0x008C, "M Rebuild Cancelled" },
+      { 0x008D, "M Rebuild Failed for Unknown Reasons" },
+      { 0x008E, "M Rebuild Failed due to New Physical Device" },
+      { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
+      { 0x0090, "M Initialization Started" },
+      { 0x0091, "M Initialization Completed" },
+      { 0x0092, "M Initialization Cancelled" },
+      { 0x0093, "M Initialization Failed" },
+      { 0x0094, "L Found" },
+      { 0x0095, "L Deleted" },
+      { 0x0096, "M Expand Capacity Started" },
+      { 0x0097, "M Expand Capacity Completed" },
+      { 0x0098, "M Expand Capacity Failed" },
+      { 0x0099, "L Bad Block Found" },
+      { 0x009A, "L Size Changed" },
+      { 0x009B, "L Type Changed" },
+      { 0x009C, "L Bad Data Block Found" },
+      { 0x009E, "L Read of Data Block in BDT" },
+      { 0x009F, "L Write Back Data for Disk Block Lost" },
+      { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
+      { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
+      { 0x00A2, "L Standby Rebuild Started" },
+      /* Fault Management Events (0x0100 - 0x017F) */
+      { 0x0140, "E Fan %d Failed" },
+      { 0x0141, "E Fan %d OK" },
+      { 0x0142, "E Fan %d Not Present" },
+      { 0x0143, "E Power Supply %d Failed" },
+      { 0x0144, "E Power Supply %d OK" },
+      { 0x0145, "E Power Supply %d Not Present" },
+      { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
+      { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
+      { 0x0148, "E Temperature Sensor %d Temperature Normal" },
+      { 0x0149, "E Temperature Sensor %d Not Present" },
+      { 0x014A, "E Enclosure Management Unit %d Access Critical" },
+      { 0x014B, "E Enclosure Management Unit %d Access OK" },
+      { 0x014C, "E Enclosure Management Unit %d Access Offline" },
+      /* Controller Events (0x0180 - 0x01FF) */
+      { 0x0181, "C Cache Write Back Error" },
+      { 0x0188, "C Battery Backup Unit Found" },
+      { 0x0189, "C Battery Backup Unit Charge Level Low" },
+      { 0x018A, "C Battery Backup Unit Charge Level OK" },
+      { 0x0193, "C Installation Aborted" },
+      { 0x0195, "C Battery Backup Unit Physically Removed" },
+      { 0x0196, "C Memory Error During Warm Boot" },
+      { 0x019E, "C Memory Soft ECC Error Corrected" },
+      { 0x019F, "C Memory Hard ECC Error Corrected" },
+      { 0x01A2, "C Battery Backup Unit Failed" },
+      { 0x01AB, "C Mirror Race Recovery Failed" },
+      { 0x01AC, "C Mirror Race on Critical Drive" },
+      /* Controller Internal Processor Events */
+      { 0x0380, "C Internal Controller Hung" },
+      { 0x0381, "C Internal Controller Firmware Breakpoint" },
+      { 0x0390, "C Internal Controller i960 Processor Specific Error" },
+      { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
+      { 0, "" } };
+  int EventListIndex = 0, EventCode;
+  unsigned char EventType, *EventMessage;
+  if (Event->EventCode == 0x1C &&
+      RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
+      (RequestSense->AdditionalSenseCode == 0x80 ||
+       RequestSense->AdditionalSenseCode == 0x81))
+    Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
+		       RequestSense->AdditionalSenseCodeQualifier;
+  while (true)
+    {
+      EventCode = EventList[EventListIndex].EventCode;
+      if (EventCode == Event->EventCode || EventCode == 0) break;
+      EventListIndex++;
+    }
+  EventType = EventList[EventListIndex].EventMessage[0];
+  EventMessage = &EventList[EventListIndex].EventMessage[2];
+  if (EventCode == 0)
+    {
+      DAC960_Critical("Unknown Controller Event Code %04X\n",
+		      Controller, Event->EventCode);
+      return;
+    }
+  switch (EventType)
+    {
+    case 'P':
+      DAC960_Critical("Physical Device %d:%d %s\n", Controller,
+		      Event->Channel, Event->TargetID, EventMessage);
+      break;
+    case 'L':
+      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
+		      Event->LogicalUnit, Controller->ControllerNumber,
+		      Event->LogicalUnit, EventMessage);
+      break;
+    case 'M':
+      DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
+		      Event->LogicalUnit, Controller->ControllerNumber,
+		      Event->LogicalUnit, EventMessage);
+      break;
+    case 'S':
+      if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
+	  (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
+	   RequestSense->AdditionalSenseCode == 0x04 &&
+	   (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
+	    RequestSense->AdditionalSenseCodeQualifier == 0x02)))
+	break;
+      DAC960_Critical("Physical Device %d:%d %s\n", Controller,
+		      Event->Channel, Event->TargetID, EventMessage);
+      DAC960_Critical("Physical Device %d:%d Request Sense: "
+		      "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
+		      Controller,
+		      Event->Channel,
+		      Event->TargetID,
+		      RequestSense->SenseKey,
+		      RequestSense->AdditionalSenseCode,
+		      RequestSense->AdditionalSenseCodeQualifier);
+      DAC960_Critical("Physical Device %d:%d Request Sense: "
+		      "Information = %02X%02X%02X%02X "
+		      "%02X%02X%02X%02X\n",
+		      Controller,
+		      Event->Channel,
+		      Event->TargetID,
+		      RequestSense->Information[0],
+		      RequestSense->Information[1],
+		      RequestSense->Information[2],
+		      RequestSense->Information[3],
+		      RequestSense->CommandSpecificInformation[0],
+		      RequestSense->CommandSpecificInformation[1],
+		      RequestSense->CommandSpecificInformation[2],
+		      RequestSense->CommandSpecificInformation[3]);
+      break;
+    case 'E':
+      if (Controller->SuppressEnclosureMessages) break;
+      sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
+      DAC960_Critical("Enclosure %d %s\n", Controller,
+		      Event->TargetID, MessageBuffer);
+      break;
+    case 'C':
+      DAC960_Critical("Controller %s\n", Controller, EventMessage);
+      break;
+    default:
+      DAC960_Critical("Unknown Controller Event Code %04X\n",
+		      Controller, Event->EventCode);
+      break;
+    }
+}
+
+
+/*
+  DAC960_V2_ReportProgress prints an appropriate progress message for
+  Logical Device Long Operations.
+*/
+
+static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
+				     unsigned char *MessageString,
+				     unsigned int LogicalDeviceNumber,
+				     unsigned long BlocksCompleted,
+				     unsigned long LogicalDeviceSize)
+{
+  Controller->EphemeralProgressMessage = true;
+  DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
+		  "%d%% completed\n", Controller,
+		  MessageString,
+		  LogicalDeviceNumber,
+		  Controller->ControllerNumber,
+		  LogicalDeviceNumber,
+		  (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
+  Controller->EphemeralProgressMessage = false;
+}
+
+
+/*
+  DAC960_V2_ProcessCompletedCommand performs completion processing for Command
+  for DAC960 V2 Firmware Controllers.
+*/
+
+static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_CommandType_T CommandType = Command->CommandType;
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_IOCTL_Opcode_T CommandOpcode = CommandMailbox->Common.IOCTL_Opcode;
+  DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
+
+  if (CommandType == DAC960_ReadCommand ||
+      CommandType == DAC960_WriteCommand)
+    {
+
+#ifdef FORCE_RETRY_DEBUG
+      CommandStatus = DAC960_V2_AbormalCompletion;
+#endif
+      Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
+
+      if (CommandStatus == DAC960_V2_NormalCompletion) {
+
+		if (!DAC960_ProcessCompletedRequest(Command, true))
+			BUG();
+
+      } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
+	{
+	  /*
+	   * break the command down into pieces and resubmit each
+	   * piece, hoping that some of them will succeed.
+	   */
+	   DAC960_queue_partial_rw(Command);
+	   return;
+	}
+      else
+	{
+	  if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
+	    DAC960_V2_ReadWriteError(Command);
+	  /*
+	    Perform completion processing for all buffers in this I/O Request.
+	  */
+          (void)DAC960_ProcessCompletedRequest(Command, false);
+	}
+    }
+  else if (CommandType == DAC960_ReadRetryCommand ||
+	   CommandType == DAC960_WriteRetryCommand)
+    {
+      boolean normal_completion;
+
+#ifdef FORCE_RETRY_FAILURE_DEBUG
+      static int retry_count = 1;
+#endif
+      /*
+        Perform completion processing for the portion that was
+	retried, and submit the next portion, if any.
+      */
+      normal_completion = true;
+      if (CommandStatus != DAC960_V2_NormalCompletion) {
+	normal_completion = false;
+	if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
+	    DAC960_V2_ReadWriteError(Command);
+      }
+
+#ifdef FORCE_RETRY_FAILURE_DEBUG
+      if (!(++retry_count % 10000)) {
+	      printk("V2 error retry failure test\n");
+	      normal_completion = false;
+	      DAC960_V2_ReadWriteError(Command);
+      }
+#endif
+
+      if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
+		DAC960_queue_partial_rw(Command);
+        	return;
+      }
+    }
+  else if (CommandType == DAC960_MonitoringCommand)
+    {
+      if (Controller->ShutdownMonitoringTimer)
+	      return;
+      if (CommandOpcode == DAC960_V2_GetControllerInfo)
+	{
+	  DAC960_V2_ControllerInfo_T *NewControllerInfo =
+	    Controller->V2.NewControllerInformation;
+	  DAC960_V2_ControllerInfo_T *ControllerInfo =
+	    &Controller->V2.ControllerInformation;
+	  Controller->LogicalDriveCount =
+	    NewControllerInfo->LogicalDevicesPresent;
+	  Controller->V2.NeedLogicalDeviceInformation = true;
+	  Controller->V2.NeedPhysicalDeviceInformation = true;
+	  Controller->V2.StartLogicalDeviceInformationScan = true;
+	  Controller->V2.StartPhysicalDeviceInformationScan = true;
+	  Controller->MonitoringAlertMode =
+	    (NewControllerInfo->LogicalDevicesCritical > 0 ||
+	     NewControllerInfo->LogicalDevicesOffline > 0 ||
+	     NewControllerInfo->PhysicalDisksCritical > 0 ||
+	     NewControllerInfo->PhysicalDisksOffline > 0);
+	  memcpy(ControllerInfo, NewControllerInfo,
+		 sizeof(DAC960_V2_ControllerInfo_T));
+	}
+      else if (CommandOpcode == DAC960_V2_GetEvent)
+	{
+	  if (CommandStatus == DAC960_V2_NormalCompletion) {
+	    DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
+	  }
+	  Controller->V2.NextEventSequenceNumber++;
+	}
+      else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
+	       CommandStatus == DAC960_V2_NormalCompletion)
+	{
+	  DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
+	    Controller->V2.NewPhysicalDeviceInformation;
+	  unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
+	  DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
+	    Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
+	  DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+	    Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
+	  unsigned int DeviceIndex;
+	  while (PhysicalDeviceInfo != NULL &&
+		 (NewPhysicalDeviceInfo->Channel >
+		  PhysicalDeviceInfo->Channel ||
+		  (NewPhysicalDeviceInfo->Channel ==
+		   PhysicalDeviceInfo->Channel &&
+		   (NewPhysicalDeviceInfo->TargetID >
+		    PhysicalDeviceInfo->TargetID ||
+		   (NewPhysicalDeviceInfo->TargetID ==
+		    PhysicalDeviceInfo->TargetID &&
+		    NewPhysicalDeviceInfo->LogicalUnit >
+		    PhysicalDeviceInfo->LogicalUnit)))))
+	    {
+	      DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
+			      Controller,
+			      PhysicalDeviceInfo->Channel,
+			      PhysicalDeviceInfo->TargetID);
+	      Controller->V2.PhysicalDeviceInformation
+			     [PhysicalDeviceIndex] = NULL;
+	      Controller->V2.InquiryUnitSerialNumber
+			     [PhysicalDeviceIndex] = NULL;
+	      kfree(PhysicalDeviceInfo);
+	      kfree(InquiryUnitSerialNumber);
+	      for (DeviceIndex = PhysicalDeviceIndex;
+		   DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
+		   DeviceIndex++)
+		{
+		  Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
+		    Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
+		  Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
+		    Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
+		}
+	      Controller->V2.PhysicalDeviceInformation
+			     [DAC960_V2_MaxPhysicalDevices-1] = NULL;
+	      Controller->V2.InquiryUnitSerialNumber
+			     [DAC960_V2_MaxPhysicalDevices-1] = NULL;
+	      PhysicalDeviceInfo =
+		Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
+	      InquiryUnitSerialNumber =
+		Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
+	    }
+	  if (PhysicalDeviceInfo == NULL ||
+	      (NewPhysicalDeviceInfo->Channel !=
+	       PhysicalDeviceInfo->Channel) ||
+	      (NewPhysicalDeviceInfo->TargetID !=
+	       PhysicalDeviceInfo->TargetID) ||
+	      (NewPhysicalDeviceInfo->LogicalUnit !=
+	       PhysicalDeviceInfo->LogicalUnit))
+	    {
+	      PhysicalDeviceInfo = (DAC960_V2_PhysicalDeviceInfo_T *)
+		kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
+	      InquiryUnitSerialNumber =
+		(DAC960_SCSI_Inquiry_UnitSerialNumber_T *)
+		  kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
+			  GFP_ATOMIC);
+	      if (InquiryUnitSerialNumber == NULL &&
+		  PhysicalDeviceInfo != NULL)
+		{
+		  kfree(PhysicalDeviceInfo);
+		  PhysicalDeviceInfo = NULL;
+		}
+	      DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
+			      Controller,
+			      NewPhysicalDeviceInfo->Channel,
+			      NewPhysicalDeviceInfo->TargetID,
+			      (PhysicalDeviceInfo != NULL
+			       ? "" : " - Allocation Failed"));
+	      if (PhysicalDeviceInfo != NULL)
+		{
+		  memset(PhysicalDeviceInfo, 0,
+			 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
+		  PhysicalDeviceInfo->PhysicalDeviceState =
+		    DAC960_V2_Device_InvalidState;
+		  memset(InquiryUnitSerialNumber, 0,
+			 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+		  InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+		  for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
+		       DeviceIndex > PhysicalDeviceIndex;
+		       DeviceIndex--)
+		    {
+		      Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
+			Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
+		      Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
+			Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
+		    }
+		  Controller->V2.PhysicalDeviceInformation
+				 [PhysicalDeviceIndex] =
+		    PhysicalDeviceInfo;
+		  Controller->V2.InquiryUnitSerialNumber
+				 [PhysicalDeviceIndex] =
+		    InquiryUnitSerialNumber;
+		  Controller->V2.NeedDeviceSerialNumberInformation = true;
+		}
+	    }
+	  if (PhysicalDeviceInfo != NULL)
+	    {
+	      if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
+		  PhysicalDeviceInfo->PhysicalDeviceState)
+		DAC960_Critical(
+		  "Physical Device %d:%d is now %s\n", Controller,
+		  NewPhysicalDeviceInfo->Channel,
+		  NewPhysicalDeviceInfo->TargetID,
+		  (NewPhysicalDeviceInfo->PhysicalDeviceState
+		   == DAC960_V2_Device_Online
+		   ? "ONLINE"
+		   : NewPhysicalDeviceInfo->PhysicalDeviceState
+		     == DAC960_V2_Device_Rebuild
+		     ? "REBUILD"
+		     : NewPhysicalDeviceInfo->PhysicalDeviceState
+		       == DAC960_V2_Device_Missing
+		       ? "MISSING"
+		       : NewPhysicalDeviceInfo->PhysicalDeviceState
+			 == DAC960_V2_Device_Critical
+			 ? "CRITICAL"
+			 : NewPhysicalDeviceInfo->PhysicalDeviceState
+			   == DAC960_V2_Device_Dead
+			   ? "DEAD"
+			   : NewPhysicalDeviceInfo->PhysicalDeviceState
+			     == DAC960_V2_Device_SuspectedDead
+			     ? "SUSPECTED-DEAD"
+			     : NewPhysicalDeviceInfo->PhysicalDeviceState
+			       == DAC960_V2_Device_CommandedOffline
+			       ? "COMMANDED-OFFLINE"
+			       : NewPhysicalDeviceInfo->PhysicalDeviceState
+				 == DAC960_V2_Device_Standby
+				 ? "STANDBY" : "UNKNOWN"));
+	      if ((NewPhysicalDeviceInfo->ParityErrors !=
+		   PhysicalDeviceInfo->ParityErrors) ||
+		  (NewPhysicalDeviceInfo->SoftErrors !=
+		   PhysicalDeviceInfo->SoftErrors) ||
+		  (NewPhysicalDeviceInfo->HardErrors !=
+		   PhysicalDeviceInfo->HardErrors) ||
+		  (NewPhysicalDeviceInfo->MiscellaneousErrors !=
+		   PhysicalDeviceInfo->MiscellaneousErrors) ||
+		  (NewPhysicalDeviceInfo->CommandTimeouts !=
+		   PhysicalDeviceInfo->CommandTimeouts) ||
+		  (NewPhysicalDeviceInfo->Retries !=
+		   PhysicalDeviceInfo->Retries) ||
+		  (NewPhysicalDeviceInfo->Aborts !=
+		   PhysicalDeviceInfo->Aborts) ||
+		  (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
+		   PhysicalDeviceInfo->PredictedFailuresDetected))
+		{
+		  DAC960_Critical("Physical Device %d:%d Errors: "
+				  "Parity = %d, Soft = %d, "
+				  "Hard = %d, Misc = %d\n",
+				  Controller,
+				  NewPhysicalDeviceInfo->Channel,
+				  NewPhysicalDeviceInfo->TargetID,
+				  NewPhysicalDeviceInfo->ParityErrors,
+				  NewPhysicalDeviceInfo->SoftErrors,
+				  NewPhysicalDeviceInfo->HardErrors,
+				  NewPhysicalDeviceInfo->MiscellaneousErrors);
+		  DAC960_Critical("Physical Device %d:%d Errors: "
+				  "Timeouts = %d, Retries = %d, "
+				  "Aborts = %d, Predicted = %d\n",
+				  Controller,
+				  NewPhysicalDeviceInfo->Channel,
+				  NewPhysicalDeviceInfo->TargetID,
+				  NewPhysicalDeviceInfo->CommandTimeouts,
+				  NewPhysicalDeviceInfo->Retries,
+				  NewPhysicalDeviceInfo->Aborts,
+				  NewPhysicalDeviceInfo
+				  ->PredictedFailuresDetected);
+		}
+	      if ((PhysicalDeviceInfo->PhysicalDeviceState
+		   == DAC960_V2_Device_Dead ||
+		   PhysicalDeviceInfo->PhysicalDeviceState
+		   == DAC960_V2_Device_InvalidState) &&
+		  NewPhysicalDeviceInfo->PhysicalDeviceState
+		  != DAC960_V2_Device_Dead)
+		Controller->V2.NeedDeviceSerialNumberInformation = true;
+	      memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
+		     sizeof(DAC960_V2_PhysicalDeviceInfo_T));
+	    }
+	  NewPhysicalDeviceInfo->LogicalUnit++;
+	  Controller->V2.PhysicalDeviceIndex++;
+	}
+      else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
+	{
+	  unsigned int DeviceIndex;
+	  for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
+	       DeviceIndex < DAC960_V2_MaxPhysicalDevices;
+	       DeviceIndex++)
+	    {
+	      DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
+		Controller->V2.PhysicalDeviceInformation[DeviceIndex];
+	      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+		Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
+	      if (PhysicalDeviceInfo == NULL) break;
+	      DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
+			      Controller,
+			      PhysicalDeviceInfo->Channel,
+			      PhysicalDeviceInfo->TargetID);
+	      Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
+	      Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
+	      kfree(PhysicalDeviceInfo);
+	      kfree(InquiryUnitSerialNumber);
+	    }
+	  Controller->V2.NeedPhysicalDeviceInformation = false;
+	}
+      else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
+	       CommandStatus == DAC960_V2_NormalCompletion)
+	{
+	  DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
+	    Controller->V2.NewLogicalDeviceInformation;
+	  unsigned short LogicalDeviceNumber =
+	    NewLogicalDeviceInfo->LogicalDeviceNumber;
+	  DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
+	    Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
+	  if (LogicalDeviceInfo == NULL)
+	    {
+	      DAC960_V2_PhysicalDevice_T PhysicalDevice;
+	      PhysicalDevice.Controller = 0;
+	      PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
+	      PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
+	      PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
+	      Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
+		PhysicalDevice;
+	      LogicalDeviceInfo = (DAC960_V2_LogicalDeviceInfo_T *)
+		kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T), GFP_ATOMIC);
+	      Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
+		LogicalDeviceInfo;
+	      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+			      "Now Exists%s\n", Controller,
+			      LogicalDeviceNumber,
+			      Controller->ControllerNumber,
+			      LogicalDeviceNumber,
+			      (LogicalDeviceInfo != NULL
+			       ? "" : " - Allocation Failed"));
+	      if (LogicalDeviceInfo != NULL)
+		{
+		  memset(LogicalDeviceInfo, 0,
+			 sizeof(DAC960_V2_LogicalDeviceInfo_T));
+		  DAC960_ComputeGenericDiskInfo(Controller);
+		}
+	    }
+	  if (LogicalDeviceInfo != NULL)
+	    {
+	      unsigned long LogicalDeviceSize =
+		NewLogicalDeviceInfo->ConfigurableDeviceSize;
+	      if (NewLogicalDeviceInfo->LogicalDeviceState !=
+		  LogicalDeviceInfo->LogicalDeviceState)
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+				"is now %s\n", Controller,
+				LogicalDeviceNumber,
+				Controller->ControllerNumber,
+				LogicalDeviceNumber,
+				(NewLogicalDeviceInfo->LogicalDeviceState
+				 == DAC960_V2_LogicalDevice_Online
+				 ? "ONLINE"
+				 : NewLogicalDeviceInfo->LogicalDeviceState
+				   == DAC960_V2_LogicalDevice_Critical
+				   ? "CRITICAL" : "OFFLINE"));
+	      if ((NewLogicalDeviceInfo->SoftErrors !=
+		   LogicalDeviceInfo->SoftErrors) ||
+		  (NewLogicalDeviceInfo->CommandsFailed !=
+		   LogicalDeviceInfo->CommandsFailed) ||
+		  (NewLogicalDeviceInfo->DeferredWriteErrors !=
+		   LogicalDeviceInfo->DeferredWriteErrors))
+		DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
+				"Soft = %d, Failed = %d, Deferred Write = %d\n",
+				Controller, LogicalDeviceNumber,
+				Controller->ControllerNumber,
+				LogicalDeviceNumber,
+				NewLogicalDeviceInfo->SoftErrors,
+				NewLogicalDeviceInfo->CommandsFailed,
+				NewLogicalDeviceInfo->DeferredWriteErrors);
+	      if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Consistency Check",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->ConsistencyCheckBlockNumber,
+					 LogicalDeviceSize);
+	      else if (NewLogicalDeviceInfo->RebuildInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Rebuild",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->RebuildBlockNumber,
+					 LogicalDeviceSize);
+	      else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Background Initialization",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->BackgroundInitializationBlockNumber,
+					 LogicalDeviceSize);
+	      else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Foreground Initialization",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->ForegroundInitializationBlockNumber,
+					 LogicalDeviceSize);
+	      else if (NewLogicalDeviceInfo->DataMigrationInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Data Migration",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->DataMigrationBlockNumber,
+					 LogicalDeviceSize);
+	      else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
+		DAC960_V2_ReportProgress(Controller,
+					 "Patrol Operation",
+					 LogicalDeviceNumber,
+					 NewLogicalDeviceInfo
+					 ->PatrolOperationBlockNumber,
+					 LogicalDeviceSize);
+	      if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
+		  !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
+		DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
+				"Background Initialization %s\n",
+				Controller,
+				LogicalDeviceNumber,
+				Controller->ControllerNumber,
+				LogicalDeviceNumber,
+				(NewLogicalDeviceInfo->LogicalDeviceControl
+						      .LogicalDeviceInitialized
+				 ? "Completed" : "Failed"));
+	      memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
+		     sizeof(DAC960_V2_LogicalDeviceInfo_T));
+	    }
+	  Controller->V2.LogicalDriveFoundDuringScan
+			 [LogicalDeviceNumber] = true;
+	  NewLogicalDeviceInfo->LogicalDeviceNumber++;
+	}
+      else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
+	{
+	  int LogicalDriveNumber;
+	  for (LogicalDriveNumber = 0;
+	       LogicalDriveNumber < DAC960_MaxLogicalDrives;
+	       LogicalDriveNumber++)
+	    {
+	      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
+		Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
+	      if (LogicalDeviceInfo == NULL ||
+		  Controller->V2.LogicalDriveFoundDuringScan
+				 [LogicalDriveNumber])
+		continue;
+	      DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
+			      "No Longer Exists\n", Controller,
+			      LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber);
+	      Controller->V2.LogicalDeviceInformation
+			     [LogicalDriveNumber] = NULL;
+	      kfree(LogicalDeviceInfo);
+	      Controller->LogicalDriveInitiallyAccessible
+			  [LogicalDriveNumber] = false;
+	      DAC960_ComputeGenericDiskInfo(Controller);
+	    }
+	  Controller->V2.NeedLogicalDeviceInformation = false;
+	}
+      else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
+        {
+	    DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+		Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
+
+	    if (CommandStatus != DAC960_V2_NormalCompletion) {
+		memset(InquiryUnitSerialNumber,
+			0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+		InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+	    } else
+	  	memcpy(InquiryUnitSerialNumber,
+			Controller->V2.NewInquiryUnitSerialNumber,
+			sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
+
+	     Controller->V2.NeedDeviceSerialNumberInformation = false;
+        }
+
+      if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
+	  - Controller->V2.NextEventSequenceNumber > 0)
+	{
+	  CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
+	  CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
+	  CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
+	    Controller->V2.NextEventSequenceNumber >> 16;
+	  CommandMailbox->GetEvent.ControllerNumber = 0;
+	  CommandMailbox->GetEvent.IOCTL_Opcode =
+	    DAC960_V2_GetEvent;
+	  CommandMailbox->GetEvent.EventSequenceNumberLow16 =
+	    Controller->V2.NextEventSequenceNumber & 0xFFFF;
+	  CommandMailbox->GetEvent.DataTransferMemoryAddress
+				  .ScatterGatherSegments[0]
+				  .SegmentDataPointer =
+	    Controller->V2.EventDMA;
+	  CommandMailbox->GetEvent.DataTransferMemoryAddress
+				  .ScatterGatherSegments[0]
+				  .SegmentByteCount =
+	    CommandMailbox->GetEvent.DataTransferSize;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V2.NeedPhysicalDeviceInformation)
+	{
+	  if (Controller->V2.NeedDeviceSerialNumberInformation)
+	    {
+	      DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
+                Controller->V2.NewInquiryUnitSerialNumber;
+	      InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
+
+	      DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
+			Controller->V2.NewPhysicalDeviceInformation->Channel,
+			Controller->V2.NewPhysicalDeviceInformation->TargetID,
+		Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
+
+
+	      DAC960_QueueCommand(Command);
+	      return;
+	    }
+	  if (Controller->V2.StartPhysicalDeviceInformationScan)
+	    {
+	      Controller->V2.PhysicalDeviceIndex = 0;
+	      Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
+	      Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
+	      Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
+	      Controller->V2.StartPhysicalDeviceInformationScan = false;
+	    }
+	  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
+	  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
+	    sizeof(DAC960_V2_PhysicalDeviceInfo_T);
+	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
+	    Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
+	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
+	    Controller->V2.NewPhysicalDeviceInformation->TargetID;
+	  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
+	    Controller->V2.NewPhysicalDeviceInformation->Channel;
+	  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
+	    DAC960_V2_GetPhysicalDeviceInfoValid;
+	  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
+					    .ScatterGatherSegments[0]
+					    .SegmentDataPointer =
+	    Controller->V2.NewPhysicalDeviceInformationDMA;
+	  CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
+					    .ScatterGatherSegments[0]
+					    .SegmentByteCount =
+	    CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      if (Controller->V2.NeedLogicalDeviceInformation)
+	{
+	  if (Controller->V2.StartLogicalDeviceInformationScan)
+	    {
+	      int LogicalDriveNumber;
+	      for (LogicalDriveNumber = 0;
+		   LogicalDriveNumber < DAC960_MaxLogicalDrives;
+		   LogicalDriveNumber++)
+		Controller->V2.LogicalDriveFoundDuringScan
+			       [LogicalDriveNumber] = false;
+	      Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
+	      Controller->V2.StartLogicalDeviceInformationScan = false;
+	    }
+	  CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
+	  CommandMailbox->LogicalDeviceInfo.DataTransferSize =
+	    sizeof(DAC960_V2_LogicalDeviceInfo_T);
+	  CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
+	    Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
+	  CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
+	    DAC960_V2_GetLogicalDeviceInfoValid;
+	  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
+					   .ScatterGatherSegments[0]
+					   .SegmentDataPointer =
+	    Controller->V2.NewLogicalDeviceInformationDMA;
+	  CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
+					   .ScatterGatherSegments[0]
+					   .SegmentByteCount =
+	    CommandMailbox->LogicalDeviceInfo.DataTransferSize;
+	  DAC960_QueueCommand(Command);
+	  return;
+	}
+      Controller->MonitoringTimerCount++;
+      Controller->MonitoringTimer.expires =
+	jiffies + DAC960_HealthStatusMonitoringInterval;
+      	add_timer(&Controller->MonitoringTimer);
+    }
+  if (CommandType == DAC960_ImmediateCommand)
+    {
+      complete(Command->Completion);
+      Command->Completion = NULL;
+      return;
+    }
+  if (CommandType == DAC960_QueuedCommand)
+    {
+      DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
+      KernelCommand->CommandStatus = CommandStatus;
+      KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
+      KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
+      Command->V2.KernelCommand = NULL;
+      DAC960_DeallocateCommand(Command);
+      KernelCommand->CompletionFunction(KernelCommand);
+      return;
+    }
+  /*
+    Queue a Status Monitoring Command to the Controller using the just
+    completed Command if one was deferred previously due to lack of a
+    free Command when the Monitoring Timer Function was called.
+  */
+  if (Controller->MonitoringCommandDeferred)
+    {
+      Controller->MonitoringCommandDeferred = false;
+      DAC960_V2_QueueMonitoringCommand(Command);
+      return;
+    }
+  /*
+    Deallocate the Command.
+  */
+  DAC960_DeallocateCommand(Command);
+  /*
+    Wake up any processes waiting on a free Command.
+  */
+  wake_up(&Controller->CommandWaitQueue);
+}
+
+
+/*
+  DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
+  Controllers.
+*/
+
+static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
+				       void *DeviceIdentifier,
+				       struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V2_StatusMailbox_T *NextStatusMailbox;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
+  NextStatusMailbox = Controller->V2.NextStatusMailbox;
+  while (NextStatusMailbox->Fields.CommandIdentifier > 0)
+    {
+      DAC960_V2_CommandIdentifier_T CommandIdentifier =
+	NextStatusMailbox->Fields.CommandIdentifier;
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
+      Command->V2.RequestSenseLength =
+	NextStatusMailbox->Fields.RequestSenseLength;
+      Command->V2.DataTransferResidue =
+	NextStatusMailbox->Fields.DataTransferResidue;
+      NextStatusMailbox->Words[0] = 0;
+      if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
+	NextStatusMailbox = Controller->V2.FirstStatusMailbox;
+      DAC960_V2_ProcessCompletedCommand(Command);
+    }
+  Controller->V2.NextStatusMailbox = NextStatusMailbox;
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
+  Controllers.
+*/
+
+static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
+				       void *DeviceIdentifier,
+				       struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V2_StatusMailbox_T *NextStatusMailbox;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
+  NextStatusMailbox = Controller->V2.NextStatusMailbox;
+  while (NextStatusMailbox->Fields.CommandIdentifier > 0)
+    {
+      DAC960_V2_CommandIdentifier_T CommandIdentifier =
+	NextStatusMailbox->Fields.CommandIdentifier;
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
+      Command->V2.RequestSenseLength =
+	NextStatusMailbox->Fields.RequestSenseLength;
+      Command->V2.DataTransferResidue =
+	NextStatusMailbox->Fields.DataTransferResidue;
+      NextStatusMailbox->Words[0] = 0;
+      if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
+	NextStatusMailbox = Controller->V2.FirstStatusMailbox;
+      DAC960_V2_ProcessCompletedCommand(Command);
+    }
+  Controller->V2.NextStatusMailbox = NextStatusMailbox;
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
+  Controllers.
+*/
+
+static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
+				       void *DeviceIdentifier,
+				       struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_StatusMailbox_T *NextStatusMailbox;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
+  NextStatusMailbox = Controller->V1.NextStatusMailbox;
+  while (NextStatusMailbox->Fields.Valid)
+    {
+      DAC960_V1_CommandIdentifier_T CommandIdentifier =
+	NextStatusMailbox->Fields.CommandIdentifier;
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
+      NextStatusMailbox->Word = 0;
+      if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
+	NextStatusMailbox = Controller->V1.FirstStatusMailbox;
+      DAC960_V1_ProcessCompletedCommand(Command);
+    }
+  Controller->V1.NextStatusMailbox = NextStatusMailbox;
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
+  Controllers.
+*/
+
+static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
+				       void *DeviceIdentifier,
+				       struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  DAC960_V1_StatusMailbox_T *NextStatusMailbox;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
+  NextStatusMailbox = Controller->V1.NextStatusMailbox;
+  while (NextStatusMailbox->Fields.Valid)
+    {
+      DAC960_V1_CommandIdentifier_T CommandIdentifier =
+	NextStatusMailbox->Fields.CommandIdentifier;
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
+      NextStatusMailbox->Word = 0;
+      if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
+	NextStatusMailbox = Controller->V1.FirstStatusMailbox;
+      DAC960_V1_ProcessCompletedCommand(Command);
+    }
+  Controller->V1.NextStatusMailbox = NextStatusMailbox;
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
+  Controllers.
+*/
+
+static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
+				       void *DeviceIdentifier,
+				       struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
+    {
+      DAC960_V1_CommandIdentifier_T CommandIdentifier =
+	DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      Command->V1.CommandStatus =
+	DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
+      DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
+      DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
+      DAC960_V1_ProcessCompletedCommand(Command);
+    }
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
+  Controllers.
+
+  Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
+  on the data having been placed into DAC960_Controller_T, rather than
+  an arbitrary buffer.
+*/
+
+static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
+				      void *DeviceIdentifier,
+				      struct pt_regs *InterruptRegisters)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
+  void __iomem *ControllerBaseAddress = Controller->BaseAddress;
+  unsigned long flags;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
+    {
+      DAC960_V1_CommandIdentifier_T CommandIdentifier =
+	DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
+      DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
+      DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+      DAC960_V1_CommandOpcode_T CommandOpcode =
+	CommandMailbox->Common.CommandOpcode;
+      Command->V1.CommandStatus =
+	DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
+      DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
+      DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
+      switch (CommandOpcode)
+	{
+	case DAC960_V1_Enquiry_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
+	  DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
+	  break;
+	case DAC960_V1_GetDeviceState_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode =
+	    					DAC960_V1_GetDeviceState;
+	  DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
+	  break;
+	case DAC960_V1_Read_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
+	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
+	  break;
+	case DAC960_V1_Write_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
+	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
+	  break;
+	case DAC960_V1_ReadWithScatterGather_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode =
+	    DAC960_V1_ReadWithScatterGather;
+	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
+	  break;
+	case DAC960_V1_WriteWithScatterGather_Old:
+	  Command->V1.CommandMailbox.Common.CommandOpcode =
+	    DAC960_V1_WriteWithScatterGather;
+	  DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
+	  break;
+	default:
+	  break;
+	}
+      DAC960_V1_ProcessCompletedCommand(Command);
+    }
+  /*
+    Attempt to remove additional I/O Requests from the Controller's
+    I/O Request Queue and queue them to the Controller.
+  */
+  DAC960_ProcessRequest(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return IRQ_HANDLED;
+}
+
+
+/*
+  DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
+  Firmware Controllers.
+*/
+
+static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  DAC960_V1_ClearCommand(Command);
+  Command->CommandType = DAC960_MonitoringCommand;
+  CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
+  CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
+  DAC960_QueueCommand(Command);
+}
+
+
+/*
+  DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
+  Firmware Controllers.
+*/
+
+static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
+{
+  DAC960_Controller_T *Controller = Command->Controller;
+  DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_MonitoringCommand;
+  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->ControllerInfo.CommandControlBits
+				.DataTransferControllerToHost = true;
+  CommandMailbox->ControllerInfo.CommandControlBits
+				.NoAutoRequestSense = true;
+  CommandMailbox->ControllerInfo.DataTransferSize =
+    sizeof(DAC960_V2_ControllerInfo_T);
+  CommandMailbox->ControllerInfo.ControllerNumber = 0;
+  CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
+  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+				.ScatterGatherSegments[0]
+				.SegmentDataPointer =
+    Controller->V2.NewControllerInformationDMA;
+  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+				.ScatterGatherSegments[0]
+				.SegmentByteCount =
+    CommandMailbox->ControllerInfo.DataTransferSize;
+  DAC960_QueueCommand(Command);
+}
+
+
+/*
+  DAC960_MonitoringTimerFunction is the timer function for monitoring
+  the status of DAC960 Controllers.
+*/
+
+static void DAC960_MonitoringTimerFunction(unsigned long TimerData)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) TimerData;
+  DAC960_Command_T *Command;
+  unsigned long flags;
+
+  if (Controller->FirmwareType == DAC960_V1_Controller)
+    {
+      spin_lock_irqsave(&Controller->queue_lock, flags);
+      /*
+	Queue a Status Monitoring Command to Controller.
+      */
+      Command = DAC960_AllocateCommand(Controller);
+      if (Command != NULL)
+	DAC960_V1_QueueMonitoringCommand(Command);
+      else Controller->MonitoringCommandDeferred = true;
+      spin_unlock_irqrestore(&Controller->queue_lock, flags);
+    }
+  else
+    {
+      DAC960_V2_ControllerInfo_T *ControllerInfo =
+	&Controller->V2.ControllerInformation;
+      unsigned int StatusChangeCounter =
+	Controller->V2.HealthStatusBuffer->StatusChangeCounter;
+      boolean ForceMonitoringCommand = false;
+      if (jiffies - Controller->SecondaryMonitoringTime
+	  > DAC960_SecondaryMonitoringInterval)
+	{
+	  int LogicalDriveNumber;
+	  for (LogicalDriveNumber = 0;
+	       LogicalDriveNumber < DAC960_MaxLogicalDrives;
+	       LogicalDriveNumber++)
+	    {
+	      DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
+		Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
+	      if (LogicalDeviceInfo == NULL) continue;
+	      if (!LogicalDeviceInfo->LogicalDeviceControl
+				     .LogicalDeviceInitialized)
+		{
+		  ForceMonitoringCommand = true;
+		  break;
+		}
+	    }
+	  Controller->SecondaryMonitoringTime = jiffies;
+	}
+      if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
+	  Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
+	  == Controller->V2.NextEventSequenceNumber &&
+	  (ControllerInfo->BackgroundInitializationsActive +
+	   ControllerInfo->LogicalDeviceInitializationsActive +
+	   ControllerInfo->PhysicalDeviceInitializationsActive +
+	   ControllerInfo->ConsistencyChecksActive +
+	   ControllerInfo->RebuildsActive +
+	   ControllerInfo->OnlineExpansionsActive == 0 ||
+	   jiffies - Controller->PrimaryMonitoringTime
+	   < DAC960_MonitoringTimerInterval) &&
+	  !ForceMonitoringCommand)
+	{
+	  Controller->MonitoringTimer.expires =
+	    jiffies + DAC960_HealthStatusMonitoringInterval;
+	    add_timer(&Controller->MonitoringTimer);
+	  return;
+	}
+      Controller->V2.StatusChangeCounter = StatusChangeCounter;
+      Controller->PrimaryMonitoringTime = jiffies;
+
+      spin_lock_irqsave(&Controller->queue_lock, flags);
+      /*
+	Queue a Status Monitoring Command to Controller.
+      */
+      Command = DAC960_AllocateCommand(Controller);
+      if (Command != NULL)
+	DAC960_V2_QueueMonitoringCommand(Command);
+      else Controller->MonitoringCommandDeferred = true;
+      spin_unlock_irqrestore(&Controller->queue_lock, flags);
+      /*
+	Wake up any processes waiting on a Health Status Buffer change.
+      */
+      wake_up(&Controller->HealthStatusWaitQueue);
+    }
+}
+
+/*
+  DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
+  additional bytes in the Combined Status Buffer and grows the buffer if
+  necessary.  It returns true if there is enough room and false otherwise.
+*/
+
+static boolean DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
+					unsigned int ByteCount)
+{
+  unsigned char *NewStatusBuffer;
+  if (Controller->InitialStatusLength + 1 +
+      Controller->CurrentStatusLength + ByteCount + 1 <=
+      Controller->CombinedStatusBufferLength)
+    return true;
+  if (Controller->CombinedStatusBufferLength == 0)
+    {
+      unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
+      while (NewStatusBufferLength < ByteCount)
+	NewStatusBufferLength *= 2;
+      Controller->CombinedStatusBuffer =
+	(unsigned char *) kmalloc(NewStatusBufferLength, GFP_ATOMIC);
+      if (Controller->CombinedStatusBuffer == NULL) return false;
+      Controller->CombinedStatusBufferLength = NewStatusBufferLength;
+      return true;
+    }
+  NewStatusBuffer = (unsigned char *)
+    kmalloc(2 * Controller->CombinedStatusBufferLength, GFP_ATOMIC);
+  if (NewStatusBuffer == NULL)
+    {
+      DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
+		     Controller);
+      return false;
+    }
+  memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
+	 Controller->CombinedStatusBufferLength);
+  kfree(Controller->CombinedStatusBuffer);
+  Controller->CombinedStatusBuffer = NewStatusBuffer;
+  Controller->CombinedStatusBufferLength *= 2;
+  Controller->CurrentStatusBuffer =
+    &NewStatusBuffer[Controller->InitialStatusLength + 1];
+  return true;
+}
+
+
+/*
+  DAC960_Message prints Driver Messages.
+*/
+
+static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
+			   unsigned char *Format,
+			   DAC960_Controller_T *Controller,
+			   ...)
+{
+  static unsigned char Buffer[DAC960_LineBufferSize];
+  static boolean BeginningOfLine = true;
+  va_list Arguments;
+  int Length = 0;
+  va_start(Arguments, Controller);
+  Length = vsprintf(Buffer, Format, Arguments);
+  va_end(Arguments);
+  if (Controller == NULL)
+    printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
+	   DAC960_ControllerCount, Buffer);
+  else if (MessageLevel == DAC960_AnnounceLevel ||
+	   MessageLevel == DAC960_InfoLevel)
+    {
+      if (!Controller->ControllerInitialized)
+	{
+	  if (DAC960_CheckStatusBuffer(Controller, Length))
+	    {
+	      strcpy(&Controller->CombinedStatusBuffer
+				  [Controller->InitialStatusLength],
+		     Buffer);
+	      Controller->InitialStatusLength += Length;
+	      Controller->CurrentStatusBuffer =
+		&Controller->CombinedStatusBuffer
+			     [Controller->InitialStatusLength + 1];
+	    }
+	  if (MessageLevel == DAC960_AnnounceLevel)
+	    {
+	      static int AnnouncementLines = 0;
+	      if (++AnnouncementLines <= 2)
+		printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
+		       Buffer);
+	    }
+	  else
+	    {
+	      if (BeginningOfLine)
+		{
+		  if (Buffer[0] != '\n' || Length > 1)
+		    printk("%sDAC960#%d: %s",
+			   DAC960_MessageLevelMap[MessageLevel],
+			   Controller->ControllerNumber, Buffer);
+		}
+	      else printk("%s", Buffer);
+	    }
+	}
+      else if (DAC960_CheckStatusBuffer(Controller, Length))
+	{
+	  strcpy(&Controller->CurrentStatusBuffer[
+		    Controller->CurrentStatusLength], Buffer);
+	  Controller->CurrentStatusLength += Length;
+	}
+    }
+  else if (MessageLevel == DAC960_ProgressLevel)
+    {
+      strcpy(Controller->ProgressBuffer, Buffer);
+      Controller->ProgressBufferLength = Length;
+      if (Controller->EphemeralProgressMessage)
+	{
+	  if (jiffies - Controller->LastProgressReportTime
+	      >= DAC960_ProgressReportingInterval)
+	    {
+	      printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
+		     Controller->ControllerNumber, Buffer);
+	      Controller->LastProgressReportTime = jiffies;
+	    }
+	}
+      else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
+		  Controller->ControllerNumber, Buffer);
+    }
+  else if (MessageLevel == DAC960_UserCriticalLevel)
+    {
+      strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
+	     Buffer);
+      Controller->UserStatusLength += Length;
+      if (Buffer[0] != '\n' || Length > 1)
+	printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
+	       Controller->ControllerNumber, Buffer);
+    }
+  else
+    {
+      if (BeginningOfLine)
+	printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
+	       Controller->ControllerNumber, Buffer);
+      else printk("%s", Buffer);
+    }
+  BeginningOfLine = (Buffer[Length-1] == '\n');
+}
+
+
+/*
+  DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
+  Channel:TargetID specification from a User Command string.  It updates
+  Channel and TargetID and returns true on success and false on failure.
+*/
+
+static boolean DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
+					  char *UserCommandString,
+					  unsigned char *Channel,
+					  unsigned char *TargetID)
+{
+  char *NewUserCommandString = UserCommandString;
+  unsigned long XChannel, XTargetID;
+  while (*UserCommandString == ' ') UserCommandString++;
+  if (UserCommandString == NewUserCommandString)
+    return false;
+  XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
+  if (NewUserCommandString == UserCommandString ||
+      *NewUserCommandString != ':' ||
+      XChannel >= Controller->Channels)
+    return false;
+  UserCommandString = ++NewUserCommandString;
+  XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
+  if (NewUserCommandString == UserCommandString ||
+      *NewUserCommandString != '\0' ||
+      XTargetID >= Controller->Targets)
+    return false;
+  *Channel = XChannel;
+  *TargetID = XTargetID;
+  return true;
+}
+
+
+/*
+  DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
+  specification from a User Command string.  It updates LogicalDriveNumber and
+  returns true on success and false on failure.
+*/
+
+static boolean DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
+					char *UserCommandString,
+					unsigned char *LogicalDriveNumber)
+{
+  char *NewUserCommandString = UserCommandString;
+  unsigned long XLogicalDriveNumber;
+  while (*UserCommandString == ' ') UserCommandString++;
+  if (UserCommandString == NewUserCommandString)
+    return false;
+  XLogicalDriveNumber =
+    simple_strtoul(UserCommandString, &NewUserCommandString, 10);
+  if (NewUserCommandString == UserCommandString ||
+      *NewUserCommandString != '\0' ||
+      XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
+    return false;
+  *LogicalDriveNumber = XLogicalDriveNumber;
+  return true;
+}
+
+
+/*
+  DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
+  DAC960 V1 Firmware Controllers.
+*/
+
+static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
+				     DAC960_Command_T *Command,
+				     unsigned char Channel,
+				     unsigned char TargetID,
+				     DAC960_V1_PhysicalDeviceState_T
+				       DeviceState,
+				     const unsigned char *DeviceStateString)
+{
+  DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
+  CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
+  CommandMailbox->Type3D.Channel = Channel;
+  CommandMailbox->Type3D.TargetID = TargetID;
+  CommandMailbox->Type3D.DeviceState = DeviceState;
+  CommandMailbox->Type3D.Modifier = 0;
+  DAC960_ExecuteCommand(Command);
+  switch (Command->V1.CommandStatus)
+    {
+    case DAC960_V1_NormalCompletion:
+      DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
+			  DeviceStateString, Channel, TargetID);
+      break;
+    case DAC960_V1_UnableToStartDevice:
+      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
+			  "Unable to Start Device\n", Controller,
+			  DeviceStateString, Channel, TargetID);
+      break;
+    case DAC960_V1_NoDeviceAtAddress:
+      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
+			  "No Device at Address\n", Controller,
+			  DeviceStateString, Channel, TargetID);
+      break;
+    case DAC960_V1_InvalidChannelOrTargetOrModifier:
+      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
+			  "Invalid Channel or Target or Modifier\n",
+			  Controller, DeviceStateString, Channel, TargetID);
+      break;
+    case DAC960_V1_ChannelBusy:
+      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
+			  "Channel Busy\n", Controller,
+			  DeviceStateString, Channel, TargetID);
+      break;
+    default:
+      DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
+			  "Unexpected Status %04X\n", Controller,
+			  DeviceStateString, Channel, TargetID,
+			  Command->V1.CommandStatus);
+      break;
+    }
+}
+
+
+/*
+  DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
+  Controllers.
+*/
+
+static boolean DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
+					    unsigned char *UserCommand)
+{
+  DAC960_Command_T *Command;
+  DAC960_V1_CommandMailbox_T *CommandMailbox;
+  unsigned long flags;
+  unsigned char Channel, TargetID, LogicalDriveNumber;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
+    DAC960_WaitForCommand(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  Controller->UserStatusLength = 0;
+  DAC960_V1_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox = &Command->V1.CommandMailbox;
+  if (strcmp(UserCommand, "flush-cache") == 0)
+    {
+      CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Cache Flush Completed\n", Controller);
+    }
+  else if (strncmp(UserCommand, "kill", 4) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
+				      &Channel, &TargetID))
+    {
+      DAC960_V1_DeviceState_T *DeviceState =
+	&Controller->V1.DeviceState[Channel][TargetID];
+      if (DeviceState->Present &&
+	  DeviceState->DeviceType == DAC960_V1_DiskType &&
+	  DeviceState->DeviceState != DAC960_V1_Device_Dead)
+	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
+				 DAC960_V1_Device_Dead, "Kill");
+      else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
+			       Controller, Channel, TargetID);
+    }
+  else if (strncmp(UserCommand, "make-online", 11) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
+				      &Channel, &TargetID))
+    {
+      DAC960_V1_DeviceState_T *DeviceState =
+	&Controller->V1.DeviceState[Channel][TargetID];
+      if (DeviceState->Present &&
+	  DeviceState->DeviceType == DAC960_V1_DiskType &&
+	  DeviceState->DeviceState == DAC960_V1_Device_Dead)
+	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
+				 DAC960_V1_Device_Online, "Make Online");
+      else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
+			       Controller, Channel, TargetID);
+
+    }
+  else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
+				      &Channel, &TargetID))
+    {
+      DAC960_V1_DeviceState_T *DeviceState =
+	&Controller->V1.DeviceState[Channel][TargetID];
+      if (DeviceState->Present &&
+	  DeviceState->DeviceType == DAC960_V1_DiskType &&
+	  DeviceState->DeviceState == DAC960_V1_Device_Dead)
+	DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
+				 DAC960_V1_Device_Standby, "Make Standby");
+      else DAC960_UserCritical("Make Standby of Physical "
+			       "Device %d:%d Illegal\n",
+			       Controller, Channel, TargetID);
+    }
+  else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
+				      &Channel, &TargetID))
+    {
+      CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
+      CommandMailbox->Type3D.Channel = Channel;
+      CommandMailbox->Type3D.TargetID = TargetID;
+      DAC960_ExecuteCommand(Command);
+      switch (Command->V1.CommandStatus)
+	{
+	case DAC960_V1_NormalCompletion:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
+			      Controller, Channel, TargetID);
+	  break;
+	case DAC960_V1_AttemptToRebuildOnlineDrive:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
+			      "Attempt to Rebuild Online or "
+			      "Unresponsive Drive\n",
+			      Controller, Channel, TargetID);
+	  break;
+	case DAC960_V1_NewDiskFailedDuringRebuild:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
+			      "New Disk Failed During Rebuild\n",
+			      Controller, Channel, TargetID);
+	  break;
+	case DAC960_V1_InvalidDeviceAddress:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
+			      "Invalid Device Address\n",
+			      Controller, Channel, TargetID);
+	  break;
+	case DAC960_V1_RebuildOrCheckAlreadyInProgress:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
+			      "Rebuild or Consistency Check Already "
+			      "in Progress\n", Controller, Channel, TargetID);
+	  break;
+	default:
+	  DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
+			      "Unexpected Status %04X\n", Controller,
+			      Channel, TargetID, Command->V1.CommandStatus);
+	  break;
+	}
+    }
+  else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
+	   DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
+				    &LogicalDriveNumber))
+    {
+      CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
+      CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
+      CommandMailbox->Type3C.AutoRestore = true;
+      DAC960_ExecuteCommand(Command);
+      switch (Command->V1.CommandStatus)
+	{
+	case DAC960_V1_NormalCompletion:
+	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			      "(/dev/rd/c%dd%d) Initiated\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber);
+	  break;
+	case DAC960_V1_DependentDiskIsDead:
+	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			      "(/dev/rd/c%dd%d) Failed - "
+			      "Dependent Physical Device is DEAD\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber);
+	  break;
+	case DAC960_V1_InvalidOrNonredundantLogicalDrive:
+	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			      "(/dev/rd/c%dd%d) Failed - "
+			      "Invalid or Nonredundant Logical Drive\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber);
+	  break;
+	case DAC960_V1_RebuildOrCheckAlreadyInProgress:
+	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			      "(/dev/rd/c%dd%d) Failed - Rebuild or "
+			      "Consistency Check Already in Progress\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber);
+	  break;
+	default:
+	  DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			      "(/dev/rd/c%dd%d) Failed - "
+			      "Unexpected Status %04X\n",
+			      Controller, LogicalDriveNumber,
+			      Controller->ControllerNumber,
+			      LogicalDriveNumber, Command->V1.CommandStatus);
+	  break;
+	}
+    }
+  else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
+	   strcmp(UserCommand, "cancel-consistency-check") == 0)
+    {
+      /*
+        the OldRebuildRateConstant is never actually used
+        once its value is retrieved from the controller.
+       */
+      unsigned char *OldRebuildRateConstant;
+      dma_addr_t OldRebuildRateConstantDMA;
+
+      OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
+		sizeof(char), &OldRebuildRateConstantDMA);
+      if (OldRebuildRateConstant == NULL) {
+         DAC960_UserCritical("Cancellation of Rebuild or "
+			     "Consistency Check Failed - "
+			     "Out of Memory",
+                             Controller);
+	 goto failure;
+      }
+      CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
+      CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
+      CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
+      DAC960_ExecuteCommand(Command);
+      switch (Command->V1.CommandStatus)
+	{
+	case DAC960_V1_NormalCompletion:
+	  DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
+			      Controller);
+	  break;
+	default:
+	  DAC960_UserCritical("Cancellation of Rebuild or "
+			      "Consistency Check Failed - "
+			      "Unexpected Status %04X\n",
+			      Controller, Command->V1.CommandStatus);
+	  break;
+	}
+failure:
+  	pci_free_consistent(Controller->PCIDevice, sizeof(char),
+		OldRebuildRateConstant, OldRebuildRateConstantDMA);
+    }
+  else DAC960_UserCritical("Illegal User Command: '%s'\n",
+			   Controller, UserCommand);
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_DeallocateCommand(Command);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return true;
+}
+
+
+/*
+  DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
+  TargetID into a Logical Device.  It returns true on success and false
+  on failure.
+*/
+
+static boolean DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
+						 unsigned char Channel,
+						 unsigned char TargetID,
+						 unsigned short
+						   *LogicalDeviceNumber)
+{
+  DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
+  DAC960_Controller_T *Controller =  Command->Controller;
+
+  CommandMailbox = &Command->V2.CommandMailbox;
+  memcpy(&SavedCommandMailbox, CommandMailbox,
+	 sizeof(DAC960_V2_CommandMailbox_T));
+
+  CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
+				    .DataTransferControllerToHost = true;
+  CommandMailbox->PhysicalDeviceInfo.CommandControlBits
+				    .NoAutoRequestSense = true;
+  CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
+    sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
+  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
+  CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
+  CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
+    DAC960_V2_TranslatePhysicalToLogicalDevice;
+  CommandMailbox->Common.DataTransferMemoryAddress
+			.ScatterGatherSegments[0]
+			.SegmentDataPointer =
+    		Controller->V2.PhysicalToLogicalDeviceDMA;
+  CommandMailbox->Common.DataTransferMemoryAddress
+			.ScatterGatherSegments[0]
+			.SegmentByteCount =
+    		CommandMailbox->Common.DataTransferSize;
+
+  DAC960_ExecuteCommand(Command);
+  *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
+
+  memcpy(CommandMailbox, &SavedCommandMailbox,
+	 sizeof(DAC960_V2_CommandMailbox_T));
+  return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
+}
+
+
+/*
+  DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
+  Controllers.
+*/
+
+static boolean DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
+					    unsigned char *UserCommand)
+{
+  DAC960_Command_T *Command;
+  DAC960_V2_CommandMailbox_T *CommandMailbox;
+  unsigned long flags;
+  unsigned char Channel, TargetID, LogicalDriveNumber;
+  unsigned short LogicalDeviceNumber;
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
+    DAC960_WaitForCommand(Controller);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  Controller->UserStatusLength = 0;
+  DAC960_V2_ClearCommand(Command);
+  Command->CommandType = DAC960_ImmediateCommand;
+  CommandMailbox = &Command->V2.CommandMailbox;
+  CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
+  CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
+  CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
+  if (strcmp(UserCommand, "flush-cache") == 0)
+    {
+      CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
+      CommandMailbox->DeviceOperation.OperationDevice =
+	DAC960_V2_RAID_Controller;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Cache Flush Completed\n", Controller);
+    }
+  else if (strncmp(UserCommand, "kill", 4) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
+				      &Channel, &TargetID) &&
+	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
+					     &LogicalDeviceNumber))
+    {
+      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
+	LogicalDeviceNumber;
+      CommandMailbox->SetDeviceState.IOCTL_Opcode =
+	DAC960_V2_SetDeviceState;
+      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
+	DAC960_V2_Device_Dead;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
+			  Controller, Channel, TargetID,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Succeeded" : "Failed"));
+    }
+  else if (strncmp(UserCommand, "make-online", 11) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
+				      &Channel, &TargetID) &&
+	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
+					     &LogicalDeviceNumber))
+    {
+      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
+	LogicalDeviceNumber;
+      CommandMailbox->SetDeviceState.IOCTL_Opcode =
+	DAC960_V2_SetDeviceState;
+      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
+	DAC960_V2_Device_Online;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
+			  Controller, Channel, TargetID,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Succeeded" : "Failed"));
+    }
+  else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
+				      &Channel, &TargetID) &&
+	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
+					     &LogicalDeviceNumber))
+    {
+      CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
+	LogicalDeviceNumber;
+      CommandMailbox->SetDeviceState.IOCTL_Opcode =
+	DAC960_V2_SetDeviceState;
+      CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
+	DAC960_V2_Device_Standby;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
+			  Controller, Channel, TargetID,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Succeeded" : "Failed"));
+    }
+  else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
+				      &Channel, &TargetID) &&
+	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
+					     &LogicalDeviceNumber))
+    {
+      CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
+	LogicalDeviceNumber;
+      CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
+	DAC960_V2_RebuildDeviceStart;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
+			  Controller, Channel, TargetID,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Initiated" : "Not Initiated"));
+    }
+  else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
+	   DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
+				      &Channel, &TargetID) &&
+	   DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
+					     &LogicalDeviceNumber))
+    {
+      CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
+	LogicalDeviceNumber;
+      CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
+	DAC960_V2_RebuildDeviceStop;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
+			  Controller, Channel, TargetID,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Cancelled" : "Not Cancelled"));
+    }
+  else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
+	   DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
+				    &LogicalDriveNumber))
+    {
+      CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
+	LogicalDriveNumber;
+      CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
+	DAC960_V2_ConsistencyCheckStart;
+      CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
+      CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			  "(/dev/rd/c%dd%d) %s\n",
+			  Controller, LogicalDriveNumber,
+			  Controller->ControllerNumber,
+			  LogicalDriveNumber,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Initiated" : "Not Initiated"));
+    }
+  else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
+	   DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
+				    &LogicalDriveNumber))
+    {
+      CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
+	LogicalDriveNumber;
+      CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
+	DAC960_V2_ConsistencyCheckStop;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Consistency Check of Logical Drive %d "
+			  "(/dev/rd/c%dd%d) %s\n",
+			  Controller, LogicalDriveNumber,
+			  Controller->ControllerNumber,
+			  LogicalDriveNumber,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Cancelled" : "Not Cancelled"));
+    }
+  else if (strcmp(UserCommand, "perform-discovery") == 0)
+    {
+      CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
+      DAC960_ExecuteCommand(Command);
+      DAC960_UserCritical("Discovery %s\n", Controller,
+			  (Command->V2.CommandStatus
+			   == DAC960_V2_NormalCompletion
+			   ? "Initiated" : "Not Initiated"));
+      if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
+	{
+	  CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
+	  CommandMailbox->ControllerInfo.CommandControlBits
+					.DataTransferControllerToHost = true;
+	  CommandMailbox->ControllerInfo.CommandControlBits
+					.NoAutoRequestSense = true;
+	  CommandMailbox->ControllerInfo.DataTransferSize =
+	    sizeof(DAC960_V2_ControllerInfo_T);
+	  CommandMailbox->ControllerInfo.ControllerNumber = 0;
+	  CommandMailbox->ControllerInfo.IOCTL_Opcode =
+	    DAC960_V2_GetControllerInfo;
+	  /*
+	   * How does this NOT race with the queued Monitoring
+	   * usage of this structure?
+	   */
+	  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+					.ScatterGatherSegments[0]
+					.SegmentDataPointer =
+	    Controller->V2.NewControllerInformationDMA;
+	  CommandMailbox->ControllerInfo.DataTransferMemoryAddress
+					.ScatterGatherSegments[0]
+					.SegmentByteCount =
+	    CommandMailbox->ControllerInfo.DataTransferSize;
+	  DAC960_ExecuteCommand(Command);
+	  while (Controller->V2.NewControllerInformation->PhysicalScanActive)
+	    {
+	      DAC960_ExecuteCommand(Command);
+	      sleep_on_timeout(&Controller->CommandWaitQueue, HZ);
+	    }
+	  DAC960_UserCritical("Discovery Completed\n", Controller);
+ 	}
+    }
+  else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
+    Controller->SuppressEnclosureMessages = true;
+  else DAC960_UserCritical("Illegal User Command: '%s'\n",
+			   Controller, UserCommand);
+
+  spin_lock_irqsave(&Controller->queue_lock, flags);
+  DAC960_DeallocateCommand(Command);
+  spin_unlock_irqrestore(&Controller->queue_lock, flags);
+  return true;
+}
+
+
+/*
+  DAC960_ProcReadStatus implements reading /proc/rd/status.
+*/
+
+static int DAC960_ProcReadStatus(char *Page, char **Start, off_t Offset,
+				 int Count, int *EOF, void *Data)
+{
+  unsigned char *StatusMessage = "OK\n";
+  int ControllerNumber, BytesAvailable;
+  for (ControllerNumber = 0;
+       ControllerNumber < DAC960_ControllerCount;
+       ControllerNumber++)
+    {
+      DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
+      if (Controller == NULL) continue;
+      if (Controller->MonitoringAlertMode)
+	{
+	  StatusMessage = "ALERT\n";
+	  break;
+	}
+    }
+  BytesAvailable = strlen(StatusMessage) - Offset;
+  if (Count >= BytesAvailable)
+    {
+      Count = BytesAvailable;
+      *EOF = true;
+    }
+  if (Count <= 0) return 0;
+  *Start = Page;
+  memcpy(Page, &StatusMessage[Offset], Count);
+  return Count;
+}
+
+
+/*
+  DAC960_ProcReadInitialStatus implements reading /proc/rd/cN/initial_status.
+*/
+
+static int DAC960_ProcReadInitialStatus(char *Page, char **Start, off_t Offset,
+					int Count, int *EOF, void *Data)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
+  int BytesAvailable = Controller->InitialStatusLength - Offset;
+  if (Count >= BytesAvailable)
+    {
+      Count = BytesAvailable;
+      *EOF = true;
+    }
+  if (Count <= 0) return 0;
+  *Start = Page;
+  memcpy(Page, &Controller->CombinedStatusBuffer[Offset], Count);
+  return Count;
+}
+
+
+/*
+  DAC960_ProcReadCurrentStatus implements reading /proc/rd/cN/current_status.
+*/
+
+static int DAC960_ProcReadCurrentStatus(char *Page, char **Start, off_t Offset,
+					int Count, int *EOF, void *Data)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
+  unsigned char *StatusMessage =
+    "No Rebuild or Consistency Check in Progress\n";
+  int ProgressMessageLength = strlen(StatusMessage);
+  int BytesAvailable;
+  if (jiffies != Controller->LastCurrentStatusTime)
+    {
+      Controller->CurrentStatusLength = 0;
+      DAC960_AnnounceDriver(Controller);
+      DAC960_ReportControllerConfiguration(Controller);
+      DAC960_ReportDeviceConfiguration(Controller);
+      if (Controller->ProgressBufferLength > 0)
+	ProgressMessageLength = Controller->ProgressBufferLength;
+      if (DAC960_CheckStatusBuffer(Controller, 2 + ProgressMessageLength))
+	{
+	  unsigned char *CurrentStatusBuffer = Controller->CurrentStatusBuffer;
+	  CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
+	  CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
+	  if (Controller->ProgressBufferLength > 0)
+	    strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
+		   Controller->ProgressBuffer);
+	  else
+	    strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
+		   StatusMessage);
+	  Controller->CurrentStatusLength += ProgressMessageLength;
+	}
+      Controller->LastCurrentStatusTime = jiffies;
+    }
+  BytesAvailable = Controller->CurrentStatusLength - Offset;
+  if (Count >= BytesAvailable)
+    {
+      Count = BytesAvailable;
+      *EOF = true;
+    }
+  if (Count <= 0) return 0;
+  *Start = Page;
+  memcpy(Page, &Controller->CurrentStatusBuffer[Offset], Count);
+  return Count;
+}
+
+
+/*
+  DAC960_ProcReadUserCommand implements reading /proc/rd/cN/user_command.
+*/
+
+static int DAC960_ProcReadUserCommand(char *Page, char **Start, off_t Offset,
+				      int Count, int *EOF, void *Data)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
+  int BytesAvailable = Controller->UserStatusLength - Offset;
+  if (Count >= BytesAvailable)
+    {
+      Count = BytesAvailable;
+      *EOF = true;
+    }
+  if (Count <= 0) return 0;
+  *Start = Page;
+  memcpy(Page, &Controller->UserStatusBuffer[Offset], Count);
+  return Count;
+}
+
+
+/*
+  DAC960_ProcWriteUserCommand implements writing /proc/rd/cN/user_command.
+*/
+
+static int DAC960_ProcWriteUserCommand(struct file *file,
+				       const char __user *Buffer,
+				       unsigned long Count, void *Data)
+{
+  DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
+  unsigned char CommandBuffer[80];
+  int Length;
+  if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
+  if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
+  CommandBuffer[Count] = '\0';
+  Length = strlen(CommandBuffer);
+  if (CommandBuffer[Length-1] == '\n')
+    CommandBuffer[--Length] = '\0';
+  if (Controller->FirmwareType == DAC960_V1_Controller)
+    return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
+	    ? Count : -EBUSY);
+  else
+    return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
+	    ? Count : -EBUSY);
+}
+
+
+/*
+  DAC960_CreateProcEntries creates the /proc/rd/... entries for the
+  DAC960 Driver.
+*/
+
+static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
+{
+	struct proc_dir_entry *StatusProcEntry;
+	struct proc_dir_entry *ControllerProcEntry;
+	struct proc_dir_entry *UserCommandProcEntry;
+
+	if (DAC960_ProcDirectoryEntry == NULL) {
+  		DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL);
+  		StatusProcEntry = create_proc_read_entry("status", 0,
+					   DAC960_ProcDirectoryEntry,
+					   DAC960_ProcReadStatus, NULL);
+	}
+
+      sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
+      ControllerProcEntry = proc_mkdir(Controller->ControllerName,
+				       DAC960_ProcDirectoryEntry);
+      create_proc_read_entry("initial_status", 0, ControllerProcEntry,
+			     DAC960_ProcReadInitialStatus, Controller);
+      create_proc_read_entry("current_status", 0, ControllerProcEntry,
+			     DAC960_ProcReadCurrentStatus, Controller);
+      UserCommandProcEntry =
+	create_proc_read_entry("user_command", S_IWUSR | S_IRUSR,
+			       ControllerProcEntry, DAC960_ProcReadUserCommand,
+			       Controller);
+      UserCommandProcEntry->write_proc = DAC960_ProcWriteUserCommand;
+      Controller->ControllerProcEntry = ControllerProcEntry;
+}
+
+
+/*
+  DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
+  DAC960 Driver.
+*/
+
+static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
+{
+      if (Controller->ControllerProcEntry == NULL)
+	      return;
+      remove_proc_entry("initial_status", Controller->ControllerProcEntry);
+      remove_proc_entry("current_status", Controller->ControllerProcEntry);
+      remove_proc_entry("user_command", Controller->ControllerProcEntry);
+      remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
+      Controller->ControllerProcEntry = NULL;
+}
+
+#ifdef DAC960_GAM_MINOR
+
+/*
+ * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
+*/
+
+static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
+			    unsigned int Request, unsigned long Argument)
+{
+  int ErrorCode = 0;
+  if (!capable(CAP_SYS_ADMIN)) return -EACCES;
+  switch (Request)
+    {
+    case DAC960_IOCTL_GET_CONTROLLER_COUNT:
+      return DAC960_ControllerCount;
+    case DAC960_IOCTL_GET_CONTROLLER_INFO:
+      {
+	DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
+	  (DAC960_ControllerInfo_T __user *) Argument;
+	DAC960_ControllerInfo_T ControllerInfo;
+	DAC960_Controller_T *Controller;
+	int ControllerNumber;
+	if (UserSpaceControllerInfo == NULL) return -EINVAL;
+	ErrorCode = get_user(ControllerNumber,
+			     &UserSpaceControllerInfo->ControllerNumber);
+	if (ErrorCode != 0) return ErrorCode;
+	if (ControllerNumber < 0 ||
+	    ControllerNumber > DAC960_ControllerCount - 1)
+	  return -ENXIO;
+	Controller = DAC960_Controllers[ControllerNumber];
+	if (Controller == NULL) return -ENXIO;
+	memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
+	ControllerInfo.ControllerNumber = ControllerNumber;
+	ControllerInfo.FirmwareType = Controller->FirmwareType;
+	ControllerInfo.Channels = Controller->Channels;
+	ControllerInfo.Targets = Controller->Targets;
+	ControllerInfo.PCI_Bus = Controller->Bus;
+	ControllerInfo.PCI_Device = Controller->Device;
+	ControllerInfo.PCI_Function = Controller->Function;
+	ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
+	ControllerInfo.PCI_Address = Controller->PCI_Address;
+	strcpy(ControllerInfo.ModelName, Controller->ModelName);
+	strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
+	return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
+			     sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
+      }
+    case DAC960_IOCTL_V1_EXECUTE_COMMAND:
+      {
+	DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
+	  (DAC960_V1_UserCommand_T __user *) Argument;
+	DAC960_V1_UserCommand_T UserCommand;
+	DAC960_Controller_T *Controller;
+	DAC960_Command_T *Command = NULL;
+	DAC960_V1_CommandOpcode_T CommandOpcode;
+	DAC960_V1_CommandStatus_T CommandStatus;
+	DAC960_V1_DCDB_T DCDB;
+	DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
+	dma_addr_t	DCDB_IOBUFDMA;
+	unsigned long flags;
+	int ControllerNumber, DataTransferLength;
+	unsigned char *DataTransferBuffer = NULL;
+	dma_addr_t DataTransferBufferDMA;
+	if (UserSpaceUserCommand == NULL) return -EINVAL;
+	if (copy_from_user(&UserCommand, UserSpaceUserCommand,
+				   sizeof(DAC960_V1_UserCommand_T))) {
+		ErrorCode = -EFAULT;
+		goto Failure1a;
+	}
+	ControllerNumber = UserCommand.ControllerNumber;
+	if (ControllerNumber < 0 ||
+	    ControllerNumber > DAC960_ControllerCount - 1)
+	  return -ENXIO;
+	Controller = DAC960_Controllers[ControllerNumber];
+	if (Controller == NULL) return -ENXIO;
+	if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL;
+	CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
+	DataTransferLength = UserCommand.DataTransferLength;
+	if (CommandOpcode & 0x80) return -EINVAL;
+	if (CommandOpcode == DAC960_V1_DCDB)
+	  {
+	    if (copy_from_user(&DCDB, UserCommand.DCDB,
+			       sizeof(DAC960_V1_DCDB_T))) {
+		ErrorCode = -EFAULT;
+		goto Failure1a;
+	    }
+	    if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL;
+	    if (!((DataTransferLength == 0 &&
+		   DCDB.Direction
+		   == DAC960_V1_DCDB_NoDataTransfer) ||
+		  (DataTransferLength > 0 &&
+		   DCDB.Direction
+		   == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
+		  (DataTransferLength < 0 &&
+		   DCDB.Direction
+		   == DAC960_V1_DCDB_DataTransferSystemToDevice)))
+	      return -EINVAL;
+	    if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
+		!= abs(DataTransferLength))
+	      return -EINVAL;
+	    DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
+			sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
+	    if (DCDB_IOBUF == NULL)
+			return -ENOMEM;
+	  }
+	if (DataTransferLength > 0)
+	  {
+	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
+				DataTransferLength, &DataTransferBufferDMA);
+	    if (DataTransferBuffer == NULL) {
+		ErrorCode = -ENOMEM;
+		goto Failure1;
+	    }
+	    memset(DataTransferBuffer, 0, DataTransferLength);
+	  }
+	else if (DataTransferLength < 0)
+	  {
+	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
+				-DataTransferLength, &DataTransferBufferDMA);
+	    if (DataTransferBuffer == NULL) {
+		ErrorCode = -ENOMEM;
+		goto Failure1;
+	    }
+	    if (copy_from_user(DataTransferBuffer,
+			       UserCommand.DataTransferBuffer,
+			       -DataTransferLength)) {
+		ErrorCode = -EFAULT;
+		goto Failure1;
+	    }
+	  }
+	if (CommandOpcode == DAC960_V1_DCDB)
+	  {
+	    spin_lock_irqsave(&Controller->queue_lock, flags);
+	    while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
+	      DAC960_WaitForCommand(Controller);
+	    while (Controller->V1.DirectCommandActive[DCDB.Channel]
+						     [DCDB.TargetID])
+	      {
+		spin_unlock_irq(&Controller->queue_lock);
+		__wait_event(Controller->CommandWaitQueue,
+			     !Controller->V1.DirectCommandActive
+					     [DCDB.Channel][DCDB.TargetID]);
+		spin_lock_irq(&Controller->queue_lock);
+	      }
+	    Controller->V1.DirectCommandActive[DCDB.Channel]
+					      [DCDB.TargetID] = true;
+	    spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	    DAC960_V1_ClearCommand(Command);
+	    Command->CommandType = DAC960_ImmediateCommand;
+	    memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
+		   sizeof(DAC960_V1_CommandMailbox_T));
+	    Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
+	    DCDB.BusAddress = DataTransferBufferDMA;
+	    memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
+	  }
+	else
+	  {
+	    spin_lock_irqsave(&Controller->queue_lock, flags);
+	    while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
+	      DAC960_WaitForCommand(Controller);
+	    spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	    DAC960_V1_ClearCommand(Command);
+	    Command->CommandType = DAC960_ImmediateCommand;
+	    memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
+		   sizeof(DAC960_V1_CommandMailbox_T));
+	    if (DataTransferBuffer != NULL)
+	      Command->V1.CommandMailbox.Type3.BusAddress =
+		DataTransferBufferDMA;
+	  }
+	DAC960_ExecuteCommand(Command);
+	CommandStatus = Command->V1.CommandStatus;
+	spin_lock_irqsave(&Controller->queue_lock, flags);
+	DAC960_DeallocateCommand(Command);
+	spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	if (DataTransferLength > 0)
+	  {
+	    if (copy_to_user(UserCommand.DataTransferBuffer,
+			     DataTransferBuffer, DataTransferLength)) {
+		ErrorCode = -EFAULT;
+		goto Failure1;
+            }
+	  }
+	if (CommandOpcode == DAC960_V1_DCDB)
+	  {
+	    /*
+	      I don't believe Target or Channel in the DCDB_IOBUF
+	      should be any different from the contents of DCDB.
+	     */
+	    Controller->V1.DirectCommandActive[DCDB.Channel]
+					      [DCDB.TargetID] = false;
+	    if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
+			     sizeof(DAC960_V1_DCDB_T))) {
+		ErrorCode = -EFAULT;
+		goto Failure1;
+	    }
+	  }
+	ErrorCode = CommandStatus;
+      Failure1:
+	if (DataTransferBuffer != NULL)
+	  pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
+			DataTransferBuffer, DataTransferBufferDMA);
+	if (DCDB_IOBUF != NULL)
+	  pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
+			DCDB_IOBUF, DCDB_IOBUFDMA);
+      Failure1a:
+	return ErrorCode;
+      }
+    case DAC960_IOCTL_V2_EXECUTE_COMMAND:
+      {
+	DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
+	  (DAC960_V2_UserCommand_T __user *) Argument;
+	DAC960_V2_UserCommand_T UserCommand;
+	DAC960_Controller_T *Controller;
+	DAC960_Command_T *Command = NULL;
+	DAC960_V2_CommandMailbox_T *CommandMailbox;
+	DAC960_V2_CommandStatus_T CommandStatus;
+	unsigned long flags;
+	int ControllerNumber, DataTransferLength;
+	int DataTransferResidue, RequestSenseLength;
+	unsigned char *DataTransferBuffer = NULL;
+	dma_addr_t DataTransferBufferDMA;
+	unsigned char *RequestSenseBuffer = NULL;
+	dma_addr_t RequestSenseBufferDMA;
+	if (UserSpaceUserCommand == NULL) return -EINVAL;
+	if (copy_from_user(&UserCommand, UserSpaceUserCommand,
+			   sizeof(DAC960_V2_UserCommand_T))) {
+		ErrorCode = -EFAULT;
+		goto Failure2a;
+	}
+	ControllerNumber = UserCommand.ControllerNumber;
+	if (ControllerNumber < 0 ||
+	    ControllerNumber > DAC960_ControllerCount - 1)
+	  return -ENXIO;
+	Controller = DAC960_Controllers[ControllerNumber];
+	if (Controller == NULL) return -ENXIO;
+	if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
+	DataTransferLength = UserCommand.DataTransferLength;
+	if (DataTransferLength > 0)
+	  {
+	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
+				DataTransferLength, &DataTransferBufferDMA);
+	    if (DataTransferBuffer == NULL) return -ENOMEM;
+	    memset(DataTransferBuffer, 0, DataTransferLength);
+	  }
+	else if (DataTransferLength < 0)
+	  {
+	    DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
+				-DataTransferLength, &DataTransferBufferDMA);
+	    if (DataTransferBuffer == NULL) return -ENOMEM;
+	    if (copy_from_user(DataTransferBuffer,
+			       UserCommand.DataTransferBuffer,
+			       -DataTransferLength)) {
+		ErrorCode = -EFAULT;
+		goto Failure2;
+	    }
+	  }
+	RequestSenseLength = UserCommand.RequestSenseLength;
+	if (RequestSenseLength > 0)
+	  {
+	    RequestSenseBuffer = pci_alloc_consistent(Controller->PCIDevice,
+			RequestSenseLength, &RequestSenseBufferDMA);
+	    if (RequestSenseBuffer == NULL)
+	      {
+		ErrorCode = -ENOMEM;
+		goto Failure2;
+	      }
+	    memset(RequestSenseBuffer, 0, RequestSenseLength);
+	  }
+	spin_lock_irqsave(&Controller->queue_lock, flags);
+	while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
+	  DAC960_WaitForCommand(Controller);
+	spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	DAC960_V2_ClearCommand(Command);
+	Command->CommandType = DAC960_ImmediateCommand;
+	CommandMailbox = &Command->V2.CommandMailbox;
+	memcpy(CommandMailbox, &UserCommand.CommandMailbox,
+	       sizeof(DAC960_V2_CommandMailbox_T));
+	CommandMailbox->Common.CommandControlBits
+			      .AdditionalScatterGatherListMemory = false;
+	CommandMailbox->Common.CommandControlBits
+			      .NoAutoRequestSense = true;
+	CommandMailbox->Common.DataTransferSize = 0;
+	CommandMailbox->Common.DataTransferPageNumber = 0;
+	memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
+	       sizeof(DAC960_V2_DataTransferMemoryAddress_T));
+	if (DataTransferLength != 0)
+	  {
+	    if (DataTransferLength > 0)
+	      {
+		CommandMailbox->Common.CommandControlBits
+				      .DataTransferControllerToHost = true;
+		CommandMailbox->Common.DataTransferSize = DataTransferLength;
+	      }
+	    else
+	      {
+		CommandMailbox->Common.CommandControlBits
+				      .DataTransferControllerToHost = false;
+		CommandMailbox->Common.DataTransferSize = -DataTransferLength;
+	      }
+	    CommandMailbox->Common.DataTransferMemoryAddress
+				  .ScatterGatherSegments[0]
+				  .SegmentDataPointer = DataTransferBufferDMA;
+	    CommandMailbox->Common.DataTransferMemoryAddress
+				  .ScatterGatherSegments[0]
+				  .SegmentByteCount =
+	      CommandMailbox->Common.DataTransferSize;
+	  }
+	if (RequestSenseLength > 0)
+	  {
+	    CommandMailbox->Common.CommandControlBits
+				  .NoAutoRequestSense = false;
+	    CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
+	    CommandMailbox->Common.RequestSenseBusAddress =
+	      						RequestSenseBufferDMA;
+	  }
+	DAC960_ExecuteCommand(Command);
+	CommandStatus = Command->V2.CommandStatus;
+	RequestSenseLength = Command->V2.RequestSenseLength;
+	DataTransferResidue = Command->V2.DataTransferResidue;
+	spin_lock_irqsave(&Controller->queue_lock, flags);
+	DAC960_DeallocateCommand(Command);
+	spin_unlock_irqrestore(&Controller->queue_lock, flags);
+	if (RequestSenseLength > UserCommand.RequestSenseLength)
+	  RequestSenseLength = UserCommand.RequestSenseLength;
+	if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
+				 &DataTransferResidue,
+				 sizeof(DataTransferResidue))) {
+		ErrorCode = -EFAULT;
+		goto Failure2;
+	}
+	if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
+			 &RequestSenseLength, sizeof(RequestSenseLength))) {
+		ErrorCode = -EFAULT;
+		goto Failure2;
+	}
+	if (DataTransferLength > 0)
+	  {
+	    if (copy_to_user(UserCommand.DataTransferBuffer,
+			     DataTransferBuffer, DataTransferLength)) {
+		ErrorCode = -EFAULT;
+		goto Failure2;
+	    }
+	  }
+	if (RequestSenseLength > 0)
+	  {
+	    if (copy_to_user(UserCommand.RequestSenseBuffer,
+			     RequestSenseBuffer, RequestSenseLength)) {
+		ErrorCode = -EFAULT;
+		goto Failure2;
+	    }
+	  }
+	ErrorCode = CommandStatus;
+      Failure2:
+	  pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
+		DataTransferBuffer, DataTransferBufferDMA);
+	if (RequestSenseBuffer != NULL)
+	  pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
+		RequestSenseBuffer, RequestSenseBufferDMA);
+      Failure2a:
+	return ErrorCode;
+      }
+    case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
+      {
+	DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
+	  (DAC960_V2_GetHealthStatus_T __user *) Argument;
+	DAC960_V2_GetHealthStatus_T GetHealthStatus;
+	DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
+	DAC960_Controller_T *Controller;
+	int ControllerNumber;
+	if (UserSpaceGetHealthStatus == NULL) return -EINVAL;
+	if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
+			   sizeof(DAC960_V2_GetHealthStatus_T)))
+		return -EFAULT;
+	ControllerNumber = GetHealthStatus.ControllerNumber;
+	if (ControllerNumber < 0 ||
+	    ControllerNumber > DAC960_ControllerCount - 1)
+	  return -ENXIO;
+	Controller = DAC960_Controllers[ControllerNumber];
+	if (Controller == NULL) return -ENXIO;
+	if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
+	if (copy_from_user(&HealthStatusBuffer,
+			   GetHealthStatus.HealthStatusBuffer,
+			   sizeof(DAC960_V2_HealthStatusBuffer_T)))
+		return -EFAULT;
+	while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
+	       == HealthStatusBuffer.StatusChangeCounter &&
+	       Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
+	       == HealthStatusBuffer.NextEventSequenceNumber)
+	  {
+	    interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
+					   DAC960_MonitoringTimerInterval);
+	    if (signal_pending(current)) return -EINTR;
+	  }
+	if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
+			 Controller->V2.HealthStatusBuffer,
+			 sizeof(DAC960_V2_HealthStatusBuffer_T)))
+		return -EFAULT;
+	return 0;
+      }
+    }
+  return -EINVAL;
+}
+
+static struct file_operations DAC960_gam_fops = {
+	.owner		= THIS_MODULE,
+	.ioctl		= DAC960_gam_ioctl
+};
+
+static struct miscdevice DAC960_gam_dev = {
+	DAC960_GAM_MINOR,
+	"dac960_gam",
+	&DAC960_gam_fops
+};
+
+static int DAC960_gam_init(void)
+{
+	int ret;
+
+	ret = misc_register(&DAC960_gam_dev);
+	if (ret)
+		printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
+	return ret;
+}
+
+static void DAC960_gam_cleanup(void)
+{
+	misc_deregister(&DAC960_gam_dev);
+}
+
+#endif /* DAC960_GAM_MINOR */
+
+static struct DAC960_privdata DAC960_BA_privdata = {
+	.HardwareType =		DAC960_BA_Controller,
+	.FirmwareType 	=	DAC960_V2_Controller,
+	.InterruptHandler =	DAC960_BA_InterruptHandler,
+	.MemoryWindowSize =	DAC960_BA_RegisterWindowSize,
+};
+
+static struct DAC960_privdata DAC960_LP_privdata = {
+	.HardwareType =		DAC960_LP_Controller,
+	.FirmwareType 	=	DAC960_LP_Controller,
+	.InterruptHandler =	DAC960_LP_InterruptHandler,
+	.MemoryWindowSize =	DAC960_LP_RegisterWindowSize,
+};
+
+static struct DAC960_privdata DAC960_LA_privdata = {
+	.HardwareType =		DAC960_LA_Controller,
+	.FirmwareType 	=	DAC960_V1_Controller,
+	.InterruptHandler =	DAC960_LA_InterruptHandler,
+	.MemoryWindowSize =	DAC960_LA_RegisterWindowSize,
+};
+
+static struct DAC960_privdata DAC960_PG_privdata = {
+	.HardwareType =		DAC960_PG_Controller,
+	.FirmwareType 	=	DAC960_V1_Controller,
+	.InterruptHandler =	DAC960_PG_InterruptHandler,
+	.MemoryWindowSize =	DAC960_PG_RegisterWindowSize,
+};
+
+static struct DAC960_privdata DAC960_PD_privdata = {
+	.HardwareType =		DAC960_PD_Controller,
+	.FirmwareType 	=	DAC960_V1_Controller,
+	.InterruptHandler =	DAC960_PD_InterruptHandler,
+	.MemoryWindowSize =	DAC960_PD_RegisterWindowSize,
+};
+
+static struct DAC960_privdata DAC960_P_privdata = {
+	.HardwareType =		DAC960_P_Controller,
+	.FirmwareType 	=	DAC960_V1_Controller,
+	.InterruptHandler =	DAC960_P_InterruptHandler,
+	.MemoryWindowSize =	DAC960_PD_RegisterWindowSize,
+};
+
+static struct pci_device_id DAC960_id_table[] = {
+	{
+		.vendor 	= PCI_VENDOR_ID_MYLEX,
+		.device		= PCI_DEVICE_ID_MYLEX_DAC960_BA,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (unsigned long) &DAC960_BA_privdata,
+	},
+	{
+		.vendor 	= PCI_VENDOR_ID_MYLEX,
+		.device		= PCI_DEVICE_ID_MYLEX_DAC960_LP,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (unsigned long) &DAC960_LP_privdata,
+	},
+	{
+		.vendor 	= PCI_VENDOR_ID_DEC,
+		.device		= PCI_DEVICE_ID_DEC_21285,
+		.subvendor	= PCI_VENDOR_ID_MYLEX,
+		.subdevice	= PCI_DEVICE_ID_MYLEX_DAC960_LA,
+		.driver_data	= (unsigned long) &DAC960_LA_privdata,
+	},
+	{
+		.vendor 	= PCI_VENDOR_ID_MYLEX,
+		.device		= PCI_DEVICE_ID_MYLEX_DAC960_PG,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (unsigned long) &DAC960_PG_privdata,
+	},
+	{
+		.vendor 	= PCI_VENDOR_ID_MYLEX,
+		.device		= PCI_DEVICE_ID_MYLEX_DAC960_PD,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (unsigned long) &DAC960_PD_privdata,
+	},
+	{
+		.vendor 	= PCI_VENDOR_ID_MYLEX,
+		.device		= PCI_DEVICE_ID_MYLEX_DAC960_P,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.driver_data	= (unsigned long) &DAC960_P_privdata,
+	},
+	{0, },
+};
+
+MODULE_DEVICE_TABLE(pci, DAC960_id_table);
+
+static struct pci_driver DAC960_pci_driver = {
+	.name		= "DAC960",
+	.id_table	= DAC960_id_table,
+	.probe		= DAC960_Probe,
+	.remove		= DAC960_Remove,
+};
+
+static int DAC960_init_module(void)
+{
+	int ret;
+
+	ret =  pci_module_init(&DAC960_pci_driver);
+#ifdef DAC960_GAM_MINOR
+	if (!ret)
+		DAC960_gam_init();
+#endif
+	return ret;
+}
+
+static void DAC960_cleanup_module(void)
+{
+	int i;
+
+#ifdef DAC960_GAM_MINOR
+	DAC960_gam_cleanup();
+#endif
+
+	for (i = 0; i < DAC960_ControllerCount; i++) {
+		DAC960_Controller_T *Controller = DAC960_Controllers[i];
+		if (Controller == NULL)
+			continue;
+		DAC960_FinalizeController(Controller);
+	}
+	if (DAC960_ProcDirectoryEntry != NULL) {
+  		remove_proc_entry("rd/status", NULL);
+  		remove_proc_entry("rd", NULL);
+	}
+	DAC960_ControllerCount = 0;
+	pci_unregister_driver(&DAC960_pci_driver);
+}
+
+module_init(DAC960_init_module);
+module_exit(DAC960_cleanup_module);
+
+MODULE_LICENSE("GPL");