Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6

author: Linus Torvalds <torvalds@g5.osdl.org> 2005-10-03 15:07:10 (GMT)
committer: Linus Torvalds <torvalds@g5.osdl.org> 2005-10-03 15:07:10 (GMT)
commit: 7d6322b4659216fff76619d3b4088eecbdfa46d5 (patch)
tree: 19aa385d903fcc0f2b5d6d978dc83a87c2eca95f /drivers
parent: d6b9acc0c6c4a7c5d484d15271a5274656d0864f (diff)
parent: 51c928c34fa7cff38df584ad01de988805877dba (diff)
download: linux-7d6322b4659216fff76619d3b4088eecbdfa46d5.tar.xz
26 files changed, 4856 insertions, 310 deletions
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index a6ac616..a748fbf 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -60,6 +60,7 @@
                  Remove un-needed eh_abort handler.
                  Add support for embedded firmware error strings.
    2.26.02.003 - Correctly handle single sgl's with use_sg=1.
+   2.26.02.004 - Add support for 9550SX controllers.
 */
 
 #include <linux/module.h>
@@ -82,7 +83,7 @@
 #include "3w-9xxx.h"
 
 /* Globals */
-#define TW_DRIVER_VERSION "2.26.02.003"
+#define TW_DRIVER_VERSION "2.26.02.004"
 static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
 static unsigned int twa_device_extension_count;
 static int twa_major = -1;
@@ -892,11 +893,6 @@ static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value)
 		writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
 	}
 
-	if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) {
-		TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "SBUF Write Error: clearing");
-		writel(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
-	}
-
 	if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
 		if (tw_dev->reset_print == 0) {
 			TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing");
@@ -930,6 +926,36 @@ out:
 	return retval;
 } /* End twa_empty_response_queue() */
 
+/* This function will clear the pchip/response queue on 9550SX */
+static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev)
+{
+	u32 status_reg_value, response_que_value;
+	int count = 0, retval = 1;
+
+	if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9550SX) {
+		status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+
+		while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) {
+			response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev));
+			if ((response_que_value & TW_9550SX_DRAIN_COMPLETED) == TW_9550SX_DRAIN_COMPLETED) {
+				/* P-chip settle time */
+				msleep(500);
+				retval = 0;
+				goto out;
+			}
+			status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
+			count++;
+		}
+		if (count == TW_MAX_RESPONSE_DRAIN)
+			goto out;
+		
+		retval = 0;
+	} else
+		retval = 0;
+out:
+	return retval;
+} /* End twa_empty_response_queue_large() */
+
 /* This function passes sense keys from firmware to scsi layer */
 static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host)
 {
@@ -1613,8 +1639,16 @@ static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset)
 	int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset;
 
 	while (tries < TW_MAX_RESET_TRIES) {
-		if (do_soft_reset)
+		if (do_soft_reset) {
 			TW_SOFT_RESET(tw_dev);
+			/* Clear pchip/response queue on 9550SX */
+			if (twa_empty_response_queue_large(tw_dev)) {
+				TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence");
+				do_soft_reset = 1;
+				tries++;
+				continue;
+			}
+		}
 
 		/* Make sure controller is in a good state */
 		if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) {
@@ -2034,7 +2068,10 @@ static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id
 		goto out_free_device_extension;
 	}
 
-	mem_addr = pci_resource_start(pdev, 1);
+	if (pdev->device == PCI_DEVICE_ID_3WARE_9000)
+		mem_addr = pci_resource_start(pdev, 1);
+	else
+		mem_addr = pci_resource_start(pdev, 2);
 
 	/* Save base address */
 	tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE);
@@ -2148,6 +2185,8 @@ static void twa_remove(struct pci_dev *pdev)
 static struct pci_device_id twa_pci_tbl[] __devinitdata = {
 	{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000,
 	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+	{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX,
+	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, twa_pci_tbl);
diff --git a/drivers/scsi/3w-9xxx.h b/drivers/scsi/3w-9xxx.h
index 8c8ecbe..46f22cd 100644
--- a/drivers/scsi/3w-9xxx.h
+++ b/drivers/scsi/3w-9xxx.h
@@ -267,7 +267,6 @@ static twa_message_type twa_error_table[] = {
 #define TW_CONTROL_CLEAR_PARITY_ERROR          0x00800000
 #define TW_CONTROL_CLEAR_QUEUE_ERROR           0x00400000
 #define TW_CONTROL_CLEAR_PCI_ABORT             0x00100000
-#define TW_CONTROL_CLEAR_SBUF_WRITE_ERROR      0x00000008
 
 /* Status register bit definitions */
 #define TW_STATUS_MAJOR_VERSION_MASK	       0xF0000000
@@ -285,9 +284,8 @@ static twa_message_type twa_error_table[] = {
 #define TW_STATUS_MICROCONTROLLER_READY	       0x00002000
 #define TW_STATUS_COMMAND_QUEUE_EMPTY	       0x00001000
 #define TW_STATUS_EXPECTED_BITS		       0x00002000
-#define TW_STATUS_UNEXPECTED_BITS	       0x00F00008
-#define TW_STATUS_SBUF_WRITE_ERROR             0x00000008
-#define TW_STATUS_VALID_INTERRUPT              0x00DF0008
+#define TW_STATUS_UNEXPECTED_BITS	       0x00F00000
+#define TW_STATUS_VALID_INTERRUPT              0x00DF0000
 
 /* RESPONSE QUEUE BIT DEFINITIONS */
 #define TW_RESPONSE_ID_MASK		       0x00000FF0
@@ -324,9 +322,9 @@ static twa_message_type twa_error_table[] = {
 
 /* Compatibility defines */
 #define TW_9000_ARCH_ID 0x5
-#define TW_CURRENT_DRIVER_SRL 28
-#define TW_CURRENT_DRIVER_BUILD 9
-#define TW_CURRENT_DRIVER_BRANCH 4
+#define TW_CURRENT_DRIVER_SRL 30
+#define TW_CURRENT_DRIVER_BUILD 80
+#define TW_CURRENT_DRIVER_BRANCH 0
 
 /* Phase defines */
 #define TW_PHASE_INITIAL 0
@@ -334,6 +332,7 @@ static twa_message_type twa_error_table[] = {
 #define TW_PHASE_SGLIST  2
 
 /* Misc defines */
+#define TW_9550SX_DRAIN_COMPLETED	      0xFFFF
 #define TW_SECTOR_SIZE                        512
 #define TW_ALIGNMENT_9000                     4  /* 4 bytes */
 #define TW_ALIGNMENT_9000_SGL                 0x3
@@ -417,6 +416,9 @@ static twa_message_type twa_error_table[] = {
 #ifndef PCI_DEVICE_ID_3WARE_9000
 #define PCI_DEVICE_ID_3WARE_9000 0x1002
 #endif
+#ifndef PCI_DEVICE_ID_3WARE_9550SX
+#define PCI_DEVICE_ID_3WARE_9550SX 0x1003
+#endif
 
 /* Bitmask macros to eliminate bitfields */
 
@@ -443,6 +445,7 @@ static twa_message_type twa_error_table[] = {
 #define TW_STATUS_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + 0x4)
 #define TW_COMMAND_QUEUE_REG_ADDR(x) (sizeof(dma_addr_t) > 4 ? ((unsigned char __iomem *)x->base_addr + 0x20) : ((unsigned char __iomem *)x->base_addr + 0x8))
 #define TW_RESPONSE_QUEUE_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + 0xC)
+#define TW_RESPONSE_QUEUE_REG_ADDR_LARGE(x) ((unsigned char __iomem *)x->base_addr + 0x30)
 #define TW_CLEAR_ALL_INTERRUPTS(x) (writel(TW_STATUS_VALID_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
 #define TW_CLEAR_ATTENTION_INTERRUPT(x) (writel(TW_CONTROL_CLEAR_ATTENTION_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
 #define TW_CLEAR_HOST_INTERRUPT(x) (writel(TW_CONTROL_CLEAR_HOST_INTERRUPT, TW_CONTROL_REG_ADDR(x)))
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 1e4edbd..48529d1 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -99,6 +99,7 @@ obj-$(CONFIG_SCSI_DC395x)	+= dc395x.o
 obj-$(CONFIG_SCSI_DC390T)	+= tmscsim.o
 obj-$(CONFIG_MEGARAID_LEGACY)	+= megaraid.o
 obj-$(CONFIG_MEGARAID_NEWGEN)	+= megaraid/
+obj-$(CONFIG_MEGARAID_SAS)	+= megaraid/
 obj-$(CONFIG_SCSI_ACARD)	+= atp870u.o
 obj-$(CONFIG_SCSI_SUNESP)	+= esp.o
 obj-$(CONFIG_SCSI_GDTH)		+= gdth.o
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index a8e3dfc..93416f7 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -313,18 +313,37 @@ int aac_get_containers(struct aac_dev *dev)
 		}
 		dresp = (struct aac_mount *)fib_data(fibptr);
 
+		if ((le32_to_cpu(dresp->status) == ST_OK) &&
+		    (le32_to_cpu(dresp->mnt[0].vol) == CT_NONE)) {
+			dinfo->command = cpu_to_le32(VM_NameServe64);
+			dinfo->count = cpu_to_le32(index);
+			dinfo->type = cpu_to_le32(FT_FILESYS);
+
+			if (fib_send(ContainerCommand,
+				    fibptr,
+				    sizeof(struct aac_query_mount),
+				    FsaNormal,
+				    1, 1,
+				    NULL, NULL) < 0)
+				continue;
+		} else
+			dresp->mnt[0].capacityhigh = 0;
+
 		dprintk ((KERN_DEBUG
-		  "VM_NameServe cid=%d status=%d vol=%d state=%d cap=%u\n",
+		  "VM_NameServe cid=%d status=%d vol=%d state=%d cap=%llu\n",
 		  (int)index, (int)le32_to_cpu(dresp->status),
 		  (int)le32_to_cpu(dresp->mnt[0].vol),
 		  (int)le32_to_cpu(dresp->mnt[0].state),
-		  (unsigned)le32_to_cpu(dresp->mnt[0].capacity)));
+		  ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
+		    (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32)));
 		if ((le32_to_cpu(dresp->status) == ST_OK) &&
 		    (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE) &&
 		    (le32_to_cpu(dresp->mnt[0].state) != FSCS_HIDDEN)) {
 			fsa_dev_ptr[index].valid = 1;
 			fsa_dev_ptr[index].type = le32_to_cpu(dresp->mnt[0].vol);
-			fsa_dev_ptr[index].size = le32_to_cpu(dresp->mnt[0].capacity);
+			fsa_dev_ptr[index].size
+			  = ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
+			    (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32);
 			if (le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY)
 				    fsa_dev_ptr[index].ro = 1;
 		}
@@ -460,7 +479,7 @@ static int aac_get_container_name(struct scsi_cmnd * scsicmd, int cid)
  *	is updated in the struct fsa_dev_info structure rather than returned.
  */
  
-static int probe_container(struct aac_dev *dev, int cid)
+int probe_container(struct aac_dev *dev, int cid)
 {
 	struct fsa_dev_info *fsa_dev_ptr;
 	int status;
@@ -497,11 +516,29 @@ static int probe_container(struct aac_dev *dev, int cid)
 	dresp = (struct aac_mount *) fib_data(fibptr);
 
 	if ((le32_to_cpu(dresp->status) == ST_OK) &&
+	    (le32_to_cpu(dresp->mnt[0].vol) == CT_NONE)) {
+		dinfo->command = cpu_to_le32(VM_NameServe64);
+		dinfo->count = cpu_to_le32(cid);
+		dinfo->type = cpu_to_le32(FT_FILESYS);
+
+		if (fib_send(ContainerCommand,
+			    fibptr,
+			    sizeof(struct aac_query_mount),
+			    FsaNormal,
+			    1, 1,
+			    NULL, NULL) < 0)
+			goto error;
+	} else
+		dresp->mnt[0].capacityhigh = 0;
+
+	if ((le32_to_cpu(dresp->status) == ST_OK) &&
 	    (le32_to_cpu(dresp->mnt[0].vol) != CT_NONE) &&
 	    (le32_to_cpu(dresp->mnt[0].state) != FSCS_HIDDEN)) {
 		fsa_dev_ptr[cid].valid = 1;
 		fsa_dev_ptr[cid].type = le32_to_cpu(dresp->mnt[0].vol);
-		fsa_dev_ptr[cid].size = le32_to_cpu(dresp->mnt[0].capacity);
+		fsa_dev_ptr[cid].size
+		  = ((u64)le32_to_cpu(dresp->mnt[0].capacity)) +
+		    (((u64)le32_to_cpu(dresp->mnt[0].capacityhigh)) << 32);
 		if (le32_to_cpu(dresp->mnt[0].state) & FSCS_READONLY)
 			fsa_dev_ptr[cid].ro = 1;
 	}
@@ -655,7 +692,7 @@ int aac_get_adapter_info(struct aac_dev* dev)
 			 fibptr, 
 			 sizeof(*info),
 			 FsaNormal, 
-			 1, 1, 
+			 -1, 1, /* First `interrupt' command uses special wait */
 			 NULL, 
 			 NULL);
 
@@ -806,8 +843,8 @@ int aac_get_adapter_info(struct aac_dev* dev)
 	if (!(dev->raw_io_interface)) {
 		dev->scsi_host_ptr->sg_tablesize = (dev->max_fib_size -
 			sizeof(struct aac_fibhdr) -
-			sizeof(struct aac_write) + sizeof(struct sgmap)) /
-				sizeof(struct sgmap);
+			sizeof(struct aac_write) + sizeof(struct sgentry)) /
+				sizeof(struct sgentry);
 		if (dev->dac_support) {
 			/* 
 			 * 38 scatter gather elements 
@@ -816,8 +853,8 @@ int aac_get_adapter_info(struct aac_dev* dev)
 				(dev->max_fib_size -
 				sizeof(struct aac_fibhdr) -
 				sizeof(struct aac_write64) +
-				sizeof(struct sgmap64)) /
-					sizeof(struct sgmap64);
+				sizeof(struct sgentry64)) /
+					sizeof(struct sgentry64);
 		}
 		dev->scsi_host_ptr->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
 		if(!(dev->adapter_info.options & AAC_OPT_NEW_COMM)) {
@@ -854,7 +891,40 @@ static void io_callback(void *context, struct fib * fibptr)
 	dev = (struct aac_dev *)scsicmd->device->host->hostdata;
 	cid = ID_LUN_TO_CONTAINER(scsicmd->device->id, scsicmd->device->lun);
 
-	dprintk((KERN_DEBUG "io_callback[cpu %d]: lba = %u, t = %ld.\n", smp_processor_id(), ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3], jiffies));
+	if (nblank(dprintk(x))) {
+		u64 lba;
+		switch (scsicmd->cmnd[0]) {
+		case WRITE_6:
+		case READ_6:
+			lba = ((scsicmd->cmnd[1] & 0x1F) << 16) |
+			    (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
+			break;
+		case WRITE_16:
+		case READ_16:
+			lba = ((u64)scsicmd->cmnd[2] << 56) |
+			      ((u64)scsicmd->cmnd[3] << 48) |
+			      ((u64)scsicmd->cmnd[4] << 40) |
+			      ((u64)scsicmd->cmnd[5] << 32) |
+			      ((u64)scsicmd->cmnd[6] << 24) |
+			      (scsicmd->cmnd[7] << 16) |
+			      (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
+			break;
+		case WRITE_12:
+		case READ_12:
+			lba = ((u64)scsicmd->cmnd[2] << 24) |
+			      (scsicmd->cmnd[3] << 16) |
+			      (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+			break;
+		default:
+			lba = ((u64)scsicmd->cmnd[2] << 24) |
+			       (scsicmd->cmnd[3] << 16) |
+			       (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+			break;
+		}
+		printk(KERN_DEBUG
+		  "io_callback[cpu %d]: lba = %llu, t = %ld.\n",
+		  smp_processor_id(), (unsigned long long)lba, jiffies);
+	}
 
 	if (fibptr == NULL)
 		BUG();
@@ -895,7 +965,7 @@ static void io_callback(void *context, struct fib * fibptr)
 
 static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 {
-	u32 lba;
+	u64 lba;
 	u32 count;
 	int status;
 
@@ -907,23 +977,69 @@ static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 	/*
 	 *	Get block address and transfer length
 	 */
-	if (scsicmd->cmnd[0] == READ_6)	/* 6 byte command */
-	{
+	switch (scsicmd->cmnd[0]) {
+	case READ_6:
 		dprintk((KERN_DEBUG "aachba: received a read(6) command on id %d.\n", cid));
 
-		lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | (scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
+		lba = ((scsicmd->cmnd[1] & 0x1F) << 16) | 
+			(scsicmd->cmnd[2] << 8) | scsicmd->cmnd[3];
 		count = scsicmd->cmnd[4];
 
 		if (count == 0)
 			count = 256;
-	} else {
+		break;
+	case READ_16:
+		dprintk((KERN_DEBUG "aachba: received a read(16) command on id %d.\n", cid));
+
+		lba = 	((u64)scsicmd->cmnd[2] << 56) |
+		 	((u64)scsicmd->cmnd[3] << 48) |
+			((u64)scsicmd->cmnd[4] << 40) |
+			((u64)scsicmd->cmnd[5] << 32) |
+			((u64)scsicmd->cmnd[6] << 24) | 
+			(scsicmd->cmnd[7] << 16) |
+			(scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
+		count = (scsicmd->cmnd[10] << 24) | 
+			(scsicmd->cmnd[11] << 16) |
+			(scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
+		break;
+	case READ_12:
+		dprintk((KERN_DEBUG "aachba: received a read(12) command on id %d.\n", cid));
+
+		lba = ((u64)scsicmd->cmnd[2] << 24) | 
+			(scsicmd->cmnd[3] << 16) |
+		    	(scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+		count = (scsicmd->cmnd[6] << 24) | 
+			(scsicmd->cmnd[7] << 16) |
+		      	(scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
+		break;
+	default:
 		dprintk((KERN_DEBUG "aachba: received a read(10) command on id %d.\n", cid));
 
-		lba = (scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+		lba = ((u64)scsicmd->cmnd[2] << 24) | 
+			(scsicmd->cmnd[3] << 16) | 
+			(scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
 		count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
+		break;
 	}
-	dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %u, t = %ld.\n",
+	dprintk((KERN_DEBUG "aac_read[cpu %d]: lba = %llu, t = %ld.\n",
 	  smp_processor_id(), (unsigned long long)lba, jiffies));
+	if ((!(dev->raw_io_interface) || !(dev->raw_io_64)) &&
+		(lba & 0xffffffff00000000LL)) {
+		dprintk((KERN_DEBUG "aac_read: Illegal lba\n"));
+		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | 
+			SAM_STAT_CHECK_CONDITION;
+		set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
+			    HARDWARE_ERROR,
+			    SENCODE_INTERNAL_TARGET_FAILURE,
+			    ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
+			    0, 0);
+		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
+		  (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(scsicmd->sense_buffer))
+		    ? sizeof(scsicmd->sense_buffer)
+		    : sizeof(dev->fsa_dev[cid].sense_data));
+		scsicmd->scsi_done(scsicmd);
+		return 0;
+	}
 	/*
 	 *	Alocate and initialize a Fib
 	 */
@@ -936,8 +1052,8 @@ static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 	if (dev->raw_io_interface) {
 		struct aac_raw_io *readcmd;
 		readcmd = (struct aac_raw_io *) fib_data(cmd_fibcontext);
-		readcmd->block[0] = cpu_to_le32(lba);
-		readcmd->block[1] = 0;
+		readcmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
+		readcmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
 		readcmd->count = cpu_to_le32(count<<9);
 		readcmd->cid = cpu_to_le16(cid);
 		readcmd->flags = cpu_to_le16(1);
@@ -964,7 +1080,7 @@ static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 		readcmd->command = cpu_to_le32(VM_CtHostRead64);
 		readcmd->cid = cpu_to_le16(cid);
 		readcmd->sector_count = cpu_to_le16(count);
-		readcmd->block = cpu_to_le32(lba);
+		readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 		readcmd->pad   = 0;
 		readcmd->flags = 0; 
 
@@ -989,7 +1105,7 @@ static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 		readcmd = (struct aac_read *) fib_data(cmd_fibcontext);
 		readcmd->command = cpu_to_le32(VM_CtBlockRead);
 		readcmd->cid = cpu_to_le32(cid);
-		readcmd->block = cpu_to_le32(lba);
+		readcmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 		readcmd->count = cpu_to_le32(count * 512);
 
 		aac_build_sg(scsicmd, &readcmd->sg);
@@ -1031,7 +1147,7 @@ static int aac_read(struct scsi_cmnd * scsicmd, int cid)
 
 static int aac_write(struct scsi_cmnd * scsicmd, int cid)
 {
-	u32 lba;
+	u64 lba;
 	u32 count;
 	int status;
 	u16 fibsize;
@@ -1048,13 +1164,48 @@ static int aac_write(struct scsi_cmnd * scsicmd, int cid)
 		count = scsicmd->cmnd[4];
 		if (count == 0)
 			count = 256;
+	} else if (scsicmd->cmnd[0] == WRITE_16) { /* 16 byte command */
+		dprintk((KERN_DEBUG "aachba: received a write(16) command on id %d.\n", cid));
+
+		lba = 	((u64)scsicmd->cmnd[2] << 56) |
+			((u64)scsicmd->cmnd[3] << 48) |
+			((u64)scsicmd->cmnd[4] << 40) |
+			((u64)scsicmd->cmnd[5] << 32) |
+			((u64)scsicmd->cmnd[6] << 24) | 
+			(scsicmd->cmnd[7] << 16) |
+			(scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
+		count = (scsicmd->cmnd[10] << 24) | (scsicmd->cmnd[11] << 16) |
+			(scsicmd->cmnd[12] << 8) | scsicmd->cmnd[13];
+	} else if (scsicmd->cmnd[0] == WRITE_12) { /* 12 byte command */
+		dprintk((KERN_DEBUG "aachba: received a write(12) command on id %d.\n", cid));
+
+		lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16)
+		    | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+		count = (scsicmd->cmnd[6] << 24) | (scsicmd->cmnd[7] << 16)
+		      | (scsicmd->cmnd[8] << 8) | scsicmd->cmnd[9];
 	} else {
 		dprintk((KERN_DEBUG "aachba: received a write(10) command on id %d.\n", cid));
-		lba = (scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
+		lba = ((u64)scsicmd->cmnd[2] << 24) | (scsicmd->cmnd[3] << 16) | (scsicmd->cmnd[4] << 8) | scsicmd->cmnd[5];
 		count = (scsicmd->cmnd[7] << 8) | scsicmd->cmnd[8];
 	}
-	dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %u, t = %ld.\n",
+	dprintk((KERN_DEBUG "aac_write[cpu %d]: lba = %llu, t = %ld.\n",
 	  smp_processor_id(), (unsigned long long)lba, jiffies));
+	if ((!(dev->raw_io_interface) || !(dev->raw_io_64))
+	 && (lba & 0xffffffff00000000LL)) {
+		dprintk((KERN_DEBUG "aac_write: Illegal lba\n"));
+		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_CHECK_CONDITION;
+		set_sense((u8 *) &dev->fsa_dev[cid].sense_data,
+			    HARDWARE_ERROR,
+			    SENCODE_INTERNAL_TARGET_FAILURE,
+			    ASENCODE_INTERNAL_TARGET_FAILURE, 0, 0,
+			    0, 0);
+		memcpy(scsicmd->sense_buffer, &dev->fsa_dev[cid].sense_data,
+		  (sizeof(dev->fsa_dev[cid].sense_data) > sizeof(scsicmd->sense_buffer))
+		    ? sizeof(scsicmd->sense_buffer)
+		    : sizeof(dev->fsa_dev[cid].sense_data));
+		scsicmd->scsi_done(scsicmd);
+		return 0;
+	}
 	/*
 	 *	Allocate and initialize a Fib then setup a BlockWrite command
 	 */
@@ -1068,8 +1219,8 @@ static int aac_write(struct scsi_cmnd * scsicmd, int cid)
 	if (dev->raw_io_interface) {
 		struct aac_raw_io *writecmd;
 		writecmd = (struct aac_raw_io *) fib_data(cmd_fibcontext);
-		writecmd->block[0] = cpu_to_le32(lba);
-		writecmd->block[1] = 0;
+		writecmd->block[0] = cpu_to_le32((u32)(lba&0xffffffff));
+		writecmd->block[1] = cpu_to_le32((u32)((lba&0xffffffff00000000LL)>>32));
 		writecmd->count = cpu_to_le32(count<<9);
 		writecmd->cid = cpu_to_le16(cid);
 		writecmd->flags = 0; 
@@ -1096,7 +1247,7 @@ static int aac_write(struct scsi_cmnd * scsicmd, int cid)
 		writecmd->command = cpu_to_le32(VM_CtHostWrite64);
 		writecmd->cid = cpu_to_le16(cid);
 		writecmd->sector_count = cpu_to_le16(count); 
-		writecmd->block = cpu_to_le32(lba);
+		writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 		writecmd->pad	= 0;
 		writecmd->flags	= 0;
 
@@ -1121,7 +1272,7 @@ static int aac_write(struct scsi_cmnd * scsicmd, int cid)
 		writecmd = (struct aac_write *) fib_data(cmd_fibcontext);
 		writecmd->command = cpu_to_le32(VM_CtBlockWrite);
 		writecmd->cid = cpu_to_le32(cid);
-		writecmd->block = cpu_to_le32(lba);
+		writecmd->block = cpu_to_le32((u32)(lba&0xffffffff));
 		writecmd->count = cpu_to_le32(count * 512);
 		writecmd->sg.count = cpu_to_le32(1);
 		/* ->stable is not used - it did mean which type of write */
@@ -1310,11 +1461,18 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 			 */
 			if ((fsa_dev_ptr[cid].valid & 1) == 0) {
 				switch (scsicmd->cmnd[0]) {
+				case SERVICE_ACTION_IN:
+					if (!(dev->raw_io_interface) ||
+					    !(dev->raw_io_64) ||
+					    ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
+						break;
 				case INQUIRY:
 				case READ_CAPACITY:
 				case TEST_UNIT_READY:
 					spin_unlock_irq(host->host_lock);
 					probe_container(dev, cid);
+					if ((fsa_dev_ptr[cid].valid & 1) == 0)
+						fsa_dev_ptr[cid].valid = 0;
 					spin_lock_irq(host->host_lock);
 					if (fsa_dev_ptr[cid].valid == 0) {
 						scsicmd->result = DID_NO_CONNECT << 16;
@@ -1375,7 +1533,6 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 		memset(&inq_data, 0, sizeof (struct inquiry_data));
 
 		inq_data.inqd_ver = 2;	/* claim compliance to SCSI-2 */
-		inq_data.inqd_dtq = 0x80;	/* set RMB bit to one indicating that the medium is removable */
 		inq_data.inqd_rdf = 2;	/* A response data format value of two indicates that the data shall be in the format specified in SCSI-2 */
 		inq_data.inqd_len = 31;
 		/*Format for "pad2" is  RelAdr | WBus32 | WBus16 |  Sync  | Linked |Reserved| CmdQue | SftRe */
@@ -1397,13 +1554,55 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 		aac_internal_transfer(scsicmd, &inq_data, 0, sizeof(inq_data));
 		return aac_get_container_name(scsicmd, cid);
 	}
+	case SERVICE_ACTION_IN:
+		if (!(dev->raw_io_interface) ||
+		    !(dev->raw_io_64) ||
+		    ((scsicmd->cmnd[1] & 0x1f) != SAI_READ_CAPACITY_16))
+			break;
+	{
+		u64 capacity;
+		char cp[12];
+		unsigned int offset = 0;
+
+		dprintk((KERN_DEBUG "READ CAPACITY_16 command.\n"));
+		capacity = fsa_dev_ptr[cid].size - 1;
+		if (scsicmd->cmnd[13] > 12) {
+			offset = scsicmd->cmnd[13] - 12;
+			if (offset > sizeof(cp))
+				break;
+			memset(cp, 0, offset);
+			aac_internal_transfer(scsicmd, cp, 0, offset);
+		}
+		cp[0] = (capacity >> 56) & 0xff;
+		cp[1] = (capacity >> 48) & 0xff;
+		cp[2] = (capacity >> 40) & 0xff;
+		cp[3] = (capacity >> 32) & 0xff;
+		cp[4] = (capacity >> 24) & 0xff;
+		cp[5] = (capacity >> 16) & 0xff;
+		cp[6] = (capacity >> 8) & 0xff;
+		cp[7] = (capacity >> 0) & 0xff;
+		cp[8] = 0;
+		cp[9] = 0;
+		cp[10] = 2;
+		cp[11] = 0;
+		aac_internal_transfer(scsicmd, cp, offset, sizeof(cp));
+
+		/* Do not cache partition table for arrays */
+		scsicmd->device->removable = 1;
+
+		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
+		scsicmd->scsi_done(scsicmd);
+
+		return 0;
+	}
+
 	case READ_CAPACITY:
 	{
 		u32 capacity;
 		char cp[8];
 
 		dprintk((KERN_DEBUG "READ CAPACITY command.\n"));
-		if (fsa_dev_ptr[cid].size <= 0x100000000LL)
+		if (fsa_dev_ptr[cid].size <= 0x100000000ULL)
 			capacity = fsa_dev_ptr[cid].size - 1;
 		else
 			capacity = (u32)-1;
@@ -1417,6 +1616,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 		cp[6] = 2;
 		cp[7] = 0;
 		aac_internal_transfer(scsicmd, cp, 0, sizeof(cp));
+		/* Do not cache partition table for arrays */
+		scsicmd->device->removable = 1;
 
 		scsicmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8 | SAM_STAT_GOOD;
 		scsicmd->scsi_done(scsicmd);
@@ -1497,6 +1698,8 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 	{
 		case READ_6:
 		case READ_10:
+		case READ_12:
+		case READ_16:
 			/*
 			 *	Hack to keep track of ordinal number of the device that
 			 *	corresponds to a container. Needed to convert
@@ -1504,17 +1707,19 @@ int aac_scsi_cmd(struct scsi_cmnd * scsicmd)
 			 */
 			 
 			spin_unlock_irq(host->host_lock);
-			if  (scsicmd->request->rq_disk)
-				memcpy(fsa_dev_ptr[cid].devname,
-					scsicmd->request->rq_disk->disk_name,
-					8);
-
+			if (scsicmd->request->rq_disk)
+				strlcpy(fsa_dev_ptr[cid].devname,
+				scsicmd->request->rq_disk->disk_name,
+			  	min(sizeof(fsa_dev_ptr[cid].devname),
+				sizeof(scsicmd->request->rq_disk->disk_name) + 1));
 			ret = aac_read(scsicmd, cid);
 			spin_lock_irq(host->host_lock);
 			return ret;
 
 		case WRITE_6:
 		case WRITE_10:
+		case WRITE_12:
+		case WRITE_16:
 			spin_unlock_irq(host->host_lock);
 			ret = aac_write(scsicmd, cid);
 			spin_lock_irq(host->host_lock);
@@ -1745,6 +1950,8 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
 		case  WRITE_10:
 		case  READ_12:
 		case  WRITE_12:
+		case  READ_16:
+		case  WRITE_16:
 			if(le32_to_cpu(srbreply->data_xfer_length) < scsicmd->underflow ) {
 				printk(KERN_WARNING"aacraid: SCSI CMD underflow\n");
 			} else {
@@ -1850,8 +2057,8 @@ static void aac_srb_callback(void *context, struct fib * fibptr)
 				sizeof(scsicmd->sense_buffer) :
 				le32_to_cpu(srbreply->sense_data_size);
 #ifdef AAC_DETAILED_STATUS_INFO
-		dprintk((KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n", 
-					le32_to_cpu(srbreply->status), len));
+		printk(KERN_WARNING "aac_srb_callback: check condition, status = %d len=%d\n",
+					le32_to_cpu(srbreply->status), len);
 #endif
 		memcpy(scsicmd->sense_buffer, srbreply->sense_data, len);
 		
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index e405281..4a99d2f 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1,6 +1,10 @@
 #if (!defined(dprintk))
 # define dprintk(x)
 #endif
+/* eg: if (nblank(dprintk(x))) */
+#define _nblank(x) #x
+#define nblank(x) _nblank(x)[0]
+
 
 /*------------------------------------------------------------------------------
  *              D E F I N E S
@@ -302,7 +306,6 @@ enum aac_queue_types {
  */
 
 #define		FsaNormal	1
-#define		FsaHigh		2
 
 /*
  * Define the FIB. The FIB is the where all the requested data and
@@ -546,8 +549,6 @@ struct aac_queue {
                   /* This is only valid for adapter to host command queues. */ 
 	spinlock_t	 	*lock;		/* Spinlock for this queue must take this lock before accessing the lock */
 	spinlock_t		lockdata;	/* Actual lock (used only on one side of the lock) */
-	unsigned long		SavedIrql;     	/* Previous IRQL when the spin lock is taken */
-	u32			padding;	/* Padding - FIXME - can remove I believe */
 	struct list_head 	cmdq;	   	/* A queue of FIBs which need to be prcessed by the FS thread. This is */
                                 		/* only valid for command queues which receive entries from the adapter. */
 	struct list_head	pendingq;	/* A queue of outstanding fib's to the adapter. */
@@ -776,7 +777,9 @@ struct fsa_dev_info {
 	u64		last;
 	u64		size;
 	u32		type;
+	u32		config_waiting_on;
 	u16		queue_depth;
+	u8		config_needed;
 	u8		valid;
 	u8		ro;
 	u8		locked;
@@ -1012,6 +1015,7 @@ struct aac_dev
 	/* macro side-effects BEWARE */
 #	define			raw_io_interface \
 	  init->InitStructRevision==cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4)
+	u8			raw_io_64;
 	u8			printf_enabled;
 };
 
@@ -1362,8 +1366,10 @@ struct aac_srb_reply
 #define		VM_CtBlockVerify64	18
 #define		VM_CtHostRead64		19
 #define		VM_CtHostWrite64	20
+#define		VM_DrvErrTblLog		21
+#define		VM_NameServe64		22
 
-#define		MAX_VMCOMMAND_NUM	21	/* used for sizing stats array - leave last */
+#define		MAX_VMCOMMAND_NUM	23	/* used for sizing stats array - leave last */
 
 /*
  *	Descriptive information (eg, vital stats)
@@ -1472,6 +1478,7 @@ struct aac_mntent {
 						   manager (eg, filesystem) */
 	__le32			altoid;		/* != oid <==> snapshot or 
 						   broken mirror exists */
+	__le32			capacityhigh;
 };
 
 #define FSCS_NOTCLEAN	0x0001  /* fsck is neccessary before mounting */
@@ -1707,6 +1714,7 @@ extern struct aac_common aac_config;
 #define		AifCmdJobProgress	2	/* Progress report */
 #define			AifJobCtrZero	101	/* Array Zero progress */
 #define			AifJobStsSuccess 1	/* Job completes */
+#define			AifJobStsRunning 102	/* Job running */
 #define		AifCmdAPIReport		3	/* Report from other user of API */
 #define		AifCmdDriverNotify	4	/* Notify host driver of event */
 #define			AifDenMorphComplete 200	/* A morph operation completed */
@@ -1777,6 +1785,7 @@ int fib_adapter_complete(struct fib * fibptr, unsigned short size);
 struct aac_driver_ident* aac_get_driver_ident(int devtype);
 int aac_get_adapter_info(struct aac_dev* dev);
 int aac_send_shutdown(struct aac_dev *dev);
+int probe_container(struct aac_dev *dev, int cid);
 extern int numacb;
 extern int acbsize;
 extern char aac_driver_version[];
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 75abd04..59a341b 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -195,7 +195,7 @@ int aac_send_shutdown(struct aac_dev * dev)
 			  fibctx,
 			  sizeof(struct aac_close),
 			  FsaNormal,
-			  1, 1,
+			  -2 /* Timeout silently */, 1,
 			  NULL, NULL);
 
 	if (status == 0)
@@ -313,8 +313,15 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 	dev->max_fib_size = sizeof(struct hw_fib);
 	dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 		- sizeof(struct aac_fibhdr)
-		- sizeof(struct aac_write) + sizeof(struct sgmap))
-			/ sizeof(struct sgmap);
+		- sizeof(struct aac_write) + sizeof(struct sgentry))
+			/ sizeof(struct sgentry);
+	dev->raw_io_64 = 0;
+	if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
+		0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
+	 		(status[0] == 0x00000001)) {
+		if (status[1] & AAC_OPT_NEW_COMM_64)
+			dev->raw_io_64 = 1;
+	}
 	if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 	  0, 0, 0, 0, 0, 0,
 	  status+0, status+1, status+2, status+3, status+4))
@@ -342,8 +349,8 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 			dev->max_fib_size = 512;
 			dev->sg_tablesize = host->sg_tablesize
 			  = (512 - sizeof(struct aac_fibhdr)
-			    - sizeof(struct aac_write) + sizeof(struct sgmap))
-			     / sizeof(struct sgmap);
+			    - sizeof(struct aac_write) + sizeof(struct sgentry))
+			     / sizeof(struct sgentry);
 			host->can_queue = AAC_NUM_IO_FIB;
 		} else if (acbsize == 2048) {
 			host->max_sectors = 512;
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index a1d303f0..e4d543a 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -39,7 +39,9 @@
 #include <linux/completion.h>
 #include <linux/blkdev.h>
 #include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
 #include <asm/semaphore.h>
+#include <asm/delay.h>
 
 #include "aacraid.h"
 
@@ -269,40 +271,22 @@ static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entr
 	/* Interrupt Moderation, only interrupt for first two entries */
 	if (idx != le32_to_cpu(*(q->headers.consumer))) {
 		if (--idx == 0) {
-			if (qid == AdapHighCmdQueue)
-				idx = ADAP_HIGH_CMD_ENTRIES;
-			else if (qid == AdapNormCmdQueue)
+			if (qid == AdapNormCmdQueue)
 				idx = ADAP_NORM_CMD_ENTRIES;
-			else if (qid == AdapHighRespQueue) 
-	        		idx = ADAP_HIGH_RESP_ENTRIES;
-			else if (qid == AdapNormRespQueue) 
+			else
 				idx = ADAP_NORM_RESP_ENTRIES;
 		}
 		if (idx != le32_to_cpu(*(q->headers.consumer)))
 			*nonotify = 1; 
 	}
 
-	if (qid == AdapHighCmdQueue) {
-	        if (*index >= ADAP_HIGH_CMD_ENTRIES)
-        		*index = 0;
-	} else if (qid == AdapNormCmdQueue) {
+	if (qid == AdapNormCmdQueue) {
 	        if (*index >= ADAP_NORM_CMD_ENTRIES) 
 			*index = 0; /* Wrap to front of the Producer Queue. */
-	}
-	else if (qid == AdapHighRespQueue) 
-	{
-	        if (*index >= ADAP_HIGH_RESP_ENTRIES)
-			*index = 0;
-	}
-	else if (qid == AdapNormRespQueue) 
-	{
+	} else {
 		if (*index >= ADAP_NORM_RESP_ENTRIES) 
 			*index = 0; /* Wrap to front of the Producer Queue. */
 	}
-	else {
-		printk("aacraid: invalid qid\n");
-		BUG();
-	}
 
         if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { /* Queue is full */
 		printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
@@ -334,12 +318,8 @@ static int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_f
 {
 	struct aac_entry * entry = NULL;
 	int map = 0;
-	struct aac_queue * q = &dev->queues->queue[qid];
-		
-	spin_lock_irqsave(q->lock, q->SavedIrql);
 	    
-	if (qid == AdapHighCmdQueue || qid == AdapNormCmdQueue) 
-	{
+	if (qid == AdapNormCmdQueue) {
 		/*  if no entries wait for some if caller wants to */
         	while (!aac_get_entry(dev, qid, &entry, index, nonotify)) 
         	{
@@ -350,9 +330,7 @@ static int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_f
 	         */
 	        entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
 	        map = 1;
-	}
-	else if (qid == AdapHighRespQueue || qid == AdapNormRespQueue)
-	{
+	} else {
 	        while(!aac_get_entry(dev, qid, &entry, index, nonotify)) 
 	        {
 			/* if no entries wait for some if caller wants to */
@@ -375,42 +353,6 @@ static int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_f
 	return 0;
 }
 
-
-/**
- *	aac_insert_entry	-	insert a queue entry
- *	@dev: Adapter
- *	@index: Index of entry to insert
- *	@qid: Queue number
- *	@nonotify: Suppress adapter notification
- *
- *	Gets the next free QE off the requested priorty adapter command
- *	queue and associates the Fib with the QE. The QE represented by
- *	index is ready to insert on the queue when this routine returns
- *	success.
- */
- 
-static int aac_insert_entry(struct aac_dev * dev, u32 index, u32 qid, unsigned long nonotify) 
-{
-	struct aac_queue * q = &dev->queues->queue[qid];
-
-	if(q == NULL)
-		BUG();
-	*(q->headers.producer) = cpu_to_le32(index + 1);
-	spin_unlock_irqrestore(q->lock, q->SavedIrql);
-
-	if (qid == AdapHighCmdQueue ||
-	    qid == AdapNormCmdQueue ||
-	    qid == AdapHighRespQueue ||
-	    qid == AdapNormRespQueue)
-	{
-		if (!nonotify)
-			aac_adapter_notify(dev, qid);
-	}
-	else
-		printk("Suprise insert!\n");
-	return 0;
-}
-
 /*
  *	Define the highest level of host to adapter communication routines. 
  *	These routines will support host to adapter FS commuication. These 
@@ -439,12 +381,13 @@ static int aac_insert_entry(struct aac_dev * dev, u32 index, u32 qid, unsigned l
 int fib_send(u16 command, struct fib * fibptr, unsigned long size,  int priority, int wait, int reply, fib_callback callback, void * callback_data)
 {
 	u32 index;
-	u32 qid;
 	struct aac_dev * dev = fibptr->dev;
 	unsigned long nointr = 0;
 	struct hw_fib * hw_fib = fibptr->hw_fib;
 	struct aac_queue * q;
 	unsigned long flags = 0;
+	unsigned long qflags;
+
 	if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
 		return -EBUSY;
 	/*
@@ -497,26 +440,8 @@ int fib_send(u16 command, struct fib * fibptr, unsigned long size,  int priority
 	 *	Get a queue entry connect the FIB to it and send an notify
 	 *	the adapter a command is ready.
 	 */
-	if (priority == FsaHigh) {
-		hw_fib->header.XferState |= cpu_to_le32(HighPriority);
-		qid = AdapHighCmdQueue;
-	} else {
-		hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
-		qid = AdapNormCmdQueue;
-	}
-	q = &dev->queues->queue[qid];
+	hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
 
-	if(wait)
-		spin_lock_irqsave(&fibptr->event_lock, flags);
-	if(aac_queue_get( dev, &index, qid, hw_fib, 1, fibptr, &nointr)<0)
-		return -EWOULDBLOCK;
-	dprintk((KERN_DEBUG "fib_send: inserting a queue entry at index %d.\n",index));
-	dprintk((KERN_DEBUG "Fib contents:.\n"));
-	dprintk((KERN_DEBUG "  Command =               %d.\n", hw_fib->header.Command));
-	dprintk((KERN_DEBUG "  XferState  =            %x.\n", hw_fib->header.XferState));
-	dprintk((KERN_DEBUG "  hw_fib va being sent=%p\n",fibptr->hw_fib));
-	dprintk((KERN_DEBUG "  hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
-	dprintk((KERN_DEBUG "  fib being sent=%p\n",fibptr));
 	/*
 	 *	Fill in the Callback and CallbackContext if we are not
 	 *	going to wait.
@@ -525,22 +450,67 @@ int fib_send(u16 command, struct fib * fibptr, unsigned long size,  int priority
 		fibptr->callback = callback;
 		fibptr->callback_data = callback_data;
 	}
-	FIB_COUNTER_INCREMENT(aac_config.FibsSent);
-	list_add_tail(&fibptr->queue, &q->pendingq);
-	q->numpending++;
 
 	fibptr->done = 0;
 	fibptr->flags = 0;
 
-	if(aac_insert_entry(dev, index, qid, (nointr & aac_config.irq_mod)) < 0)
-		return -EWOULDBLOCK;
+	FIB_COUNTER_INCREMENT(aac_config.FibsSent);
+
+	dprintk((KERN_DEBUG "fib_send: inserting a queue entry at index %d.\n",index));
+	dprintk((KERN_DEBUG "Fib contents:.\n"));
+	dprintk((KERN_DEBUG "  Command =               %d.\n", hw_fib->header.Command));
+	dprintk((KERN_DEBUG "  XferState  =            %x.\n", hw_fib->header.XferState));
+	dprintk((KERN_DEBUG "  hw_fib va being sent=%p\n",fibptr->hw_fib));
+	dprintk((KERN_DEBUG "  hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
+	dprintk((KERN_DEBUG "  fib being sent=%p\n",fibptr));
+
+	q = &dev->queues->queue[AdapNormCmdQueue];
+
+	if(wait)
+		spin_lock_irqsave(&fibptr->event_lock, flags);
+	spin_lock_irqsave(q->lock, qflags);
+	aac_queue_get( dev, &index, AdapNormCmdQueue, hw_fib, 1, fibptr, &nointr);
+
+	list_add_tail(&fibptr->queue, &q->pendingq);
+	q->numpending++;
+	*(q->headers.producer) = cpu_to_le32(index + 1);
+	spin_unlock_irqrestore(q->lock, qflags);
+	if (!(nointr & aac_config.irq_mod))
+		aac_adapter_notify(dev, AdapNormCmdQueue);
 	/*
 	 *	If the caller wanted us to wait for response wait now. 
 	 */
     
 	if (wait) {
 		spin_unlock_irqrestore(&fibptr->event_lock, flags);
-		down(&fibptr->event_wait);
+		/* Only set for first known interruptable command */
+		if (wait < 0) {
+			/*
+			 * *VERY* Dangerous to time out a command, the
+			 * assumption is made that we have no hope of
+			 * functioning because an interrupt routing or other
+			 * hardware failure has occurred.
+			 */
+			unsigned long count = 36000000L; /* 3 minutes */
+			unsigned long qflags;
+			while (down_trylock(&fibptr->event_wait)) {
+				if (--count == 0) {
+					spin_lock_irqsave(q->lock, qflags);
+					q->numpending--;
+					list_del(&fibptr->queue);
+					spin_unlock_irqrestore(q->lock, qflags);
+					if (wait == -1) {
+	        				printk(KERN_ERR "aacraid: fib_send: first asynchronous command timed out.\n"
+						  "Usually a result of a PCI interrupt routing problem;\n"
+						  "update mother board BIOS or consider utilizing one of\n"
+						  "the SAFE mode kernel options (acpi, apic etc)\n");
+					}
+					return -ETIMEDOUT;
+				}
+				udelay(5);
+			}
+		} else
+			down(&fibptr->event_wait);
 		if(fibptr->done == 0)
 			BUG();
 			
@@ -622,15 +592,9 @@ void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
 		case HostNormCmdQueue:
 			notify = HostNormCmdNotFull;
 			break;
-		case HostHighCmdQueue:
-			notify = HostHighCmdNotFull;
-			break;
 		case HostNormRespQueue:
 			notify = HostNormRespNotFull;
 			break;
-		case HostHighRespQueue:
-			notify = HostHighRespNotFull;
-			break;
 		default:
 			BUG();
 			return;
@@ -652,9 +616,13 @@ int fib_adapter_complete(struct fib * fibptr, unsigned short size)
 {
 	struct hw_fib * hw_fib = fibptr->hw_fib;
 	struct aac_dev * dev = fibptr->dev;
+	struct aac_queue * q;
 	unsigned long nointr = 0;
-	if (hw_fib->header.XferState == 0)
+	unsigned long qflags;
+
+	if (hw_fib->header.XferState == 0) {
         	return 0;
+	}
 	/*
 	 *	If we plan to do anything check the structure type first.
 	 */ 
@@ -669,37 +637,21 @@ int fib_adapter_complete(struct fib * fibptr, unsigned short size)
 	 *	send the completed cdb to the adapter.
 	 */
 	if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
+		u32 index;
 	        hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
-	        if (hw_fib->header.XferState & cpu_to_le32(HighPriority)) {
-        		u32 index;
-       			if (size) 
-			{
-				size += sizeof(struct aac_fibhdr);
-				if (size > le16_to_cpu(hw_fib->header.SenderSize))
-					return -EMSGSIZE;
-				hw_fib->header.Size = cpu_to_le16(size);
-			}
-			if(aac_queue_get(dev, &index, AdapHighRespQueue, hw_fib, 1, NULL, &nointr) < 0) {
-				return -EWOULDBLOCK;
-			}
-			if (aac_insert_entry(dev, index, AdapHighRespQueue,  (nointr & (int)aac_config.irq_mod)) != 0) {
-			}
-		} else if (hw_fib->header.XferState & 
-				cpu_to_le32(NormalPriority)) {
-			u32 index;
-
-			if (size) {
-				size += sizeof(struct aac_fibhdr);
-				if (size > le16_to_cpu(hw_fib->header.SenderSize)) 
-					return -EMSGSIZE;
-				hw_fib->header.Size = cpu_to_le16(size);
-			}
-			if (aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr) < 0) 
-				return -EWOULDBLOCK;
-			if (aac_insert_entry(dev, index, AdapNormRespQueue, (nointr & (int)aac_config.irq_mod)) != 0) 
-			{
-			}
+		if (size) {
+			size += sizeof(struct aac_fibhdr);
+			if (size > le16_to_cpu(hw_fib->header.SenderSize)) 
+				return -EMSGSIZE;
+			hw_fib->header.Size = cpu_to_le16(size);
 		}
+		q = &dev->queues->queue[AdapNormRespQueue];
+		spin_lock_irqsave(q->lock, qflags);
+		aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
+		*(q->headers.producer) = cpu_to_le32(index + 1);
+		spin_unlock_irqrestore(q->lock, qflags);
+		if (!(nointr & (int)aac_config.irq_mod))
+			aac_adapter_notify(dev, AdapNormRespQueue);
 	}
 	else 
 	{
@@ -791,6 +743,268 @@ void aac_printf(struct aac_dev *dev, u32 val)
 	memset(cp, 0,  256);
 }
 
+
+/**
+ *	aac_handle_aif		-	Handle a message from the firmware
+ *	@dev: Which adapter this fib is from
+ *	@fibptr: Pointer to fibptr from adapter
+ *
+ *	This routine handles a driver notify fib from the adapter and
+ *	dispatches it to the appropriate routine for handling.
+ */
+
+static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
+{
+	struct hw_fib * hw_fib = fibptr->hw_fib;
+	struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
+	int busy;
+	u32 container;
+	struct scsi_device *device;
+	enum {
+		NOTHING,
+		DELETE,
+		ADD,
+		CHANGE
+	} device_config_needed;
+
+	/* Sniff for container changes */
+
+	if (!dev)
+		return;
+	container = (u32)-1;
+
+	/*
+	 *	We have set this up to try and minimize the number of
+	 * re-configures that take place. As a result of this when
+	 * certain AIF's come in we will set a flag waiting for another
+	 * type of AIF before setting the re-config flag.
+	 */
+	switch (le32_to_cpu(aifcmd->command)) {
+	case AifCmdDriverNotify:
+		switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
+		/*
+		 *	Morph or Expand complete
+		 */
+		case AifDenMorphComplete:
+		case AifDenVolumeExtendComplete:
+			container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+			if (container >= dev->maximum_num_containers)
+				break;
+
+			/*
+			 *	Find the Scsi_Device associated with the SCSI
+			 * address. Make sure we have the right array, and if
+			 * so set the flag to initiate a new re-config once we
+			 * see an AifEnConfigChange AIF come through.
+			 */
+
+			if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
+				device = scsi_device_lookup(dev->scsi_host_ptr, 
+					CONTAINER_TO_CHANNEL(container), 
+					CONTAINER_TO_ID(container), 
+					CONTAINER_TO_LUN(container));
+				if (device) {
+					dev->fsa_dev[container].config_needed = CHANGE;
+					dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
+					scsi_device_put(device);
+				}
+			}
+		}
+
+		/*
+		 *	If we are waiting on something and this happens to be
+		 * that thing then set the re-configure flag.
+		 */
+		if (container != (u32)-1) {
+			if (container >= dev->maximum_num_containers)
+				break;
+			if (dev->fsa_dev[container].config_waiting_on ==
+			    le32_to_cpu(*(u32 *)aifcmd->data))
+				dev->fsa_dev[container].config_waiting_on = 0;
+		} else for (container = 0;
+		    container < dev->maximum_num_containers; ++container) {
+			if (dev->fsa_dev[container].config_waiting_on ==
+			    le32_to_cpu(*(u32 *)aifcmd->data))
+				dev->fsa_dev[container].config_waiting_on = 0;
+		}
+		break;
+
+	case AifCmdEventNotify:
+		switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
+		/*
+		 *	Add an Array.
+		 */
+		case AifEnAddContainer:
+			container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+			if (container >= dev->maximum_num_containers)
+				break;
+			dev->fsa_dev[container].config_needed = ADD;
+			dev->fsa_dev[container].config_waiting_on =
+				AifEnConfigChange;
+			break;
+
+		/*
+		 *	Delete an Array.
+		 */
+		case AifEnDeleteContainer:
+			container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+			if (container >= dev->maximum_num_containers)
+				break;
+			dev->fsa_dev[container].config_needed = DELETE;
+			dev->fsa_dev[container].config_waiting_on =
+				AifEnConfigChange;
+			break;
+
+		/*
+		 *	Container change detected. If we currently are not
+		 * waiting on something else, setup to wait on a Config Change.
+		 */
+		case AifEnContainerChange:
+			container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
+			if (container >= dev->maximum_num_containers)
+				break;
+			if (dev->fsa_dev[container].config_waiting_on)
+				break;
+			dev->fsa_dev[container].config_needed = CHANGE;
+			dev->fsa_dev[container].config_waiting_on =
+				AifEnConfigChange;
+			break;
+
+		case AifEnConfigChange:
+			break;
+
+		}
+
+		/*
+		 *	If we are waiting on something and this happens to be
+		 * that thing then set the re-configure flag.
+		 */
+		if (container != (u32)-1) {
+			if (container >= dev->maximum_num_containers)
+				break;
+			if (dev->fsa_dev[container].config_waiting_on ==
+			    le32_to_cpu(*(u32 *)aifcmd->data))
+				dev->fsa_dev[container].config_waiting_on = 0;
+		} else for (container = 0;
+		    container < dev->maximum_num_containers; ++container) {
+			if (dev->fsa_dev[container].config_waiting_on ==
+			    le32_to_cpu(*(u32 *)aifcmd->data))
+				dev->fsa_dev[container].config_waiting_on = 0;
+		}
+		break;
+
+	case AifCmdJobProgress:
+		/*
+		 *	These are job progress AIF's. When a Clear is being
+		 * done on a container it is initially created then hidden from
+		 * the OS. When the clear completes we don't get a config
+		 * change so we monitor the job status complete on a clear then
+		 * wait for a container change.
+		 */
+
+		if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
+		 && ((((u32 *)aifcmd->data)[6] == ((u32 *)aifcmd->data)[5])
+		  || (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess)))) {
+			for (container = 0;
+			    container < dev->maximum_num_containers;
+			    ++container) {
+				/*
+				 * Stomp on all config sequencing for all
+				 * containers?
+				 */
+				dev->fsa_dev[container].config_waiting_on =
+					AifEnContainerChange;
+				dev->fsa_dev[container].config_needed = ADD;
+			}
+		}
+		if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
+		 && (((u32 *)aifcmd->data)[6] == 0)
+		 && (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning))) {
+			for (container = 0;
+			    container < dev->maximum_num_containers;
+			    ++container) {
+				/*
+				 * Stomp on all config sequencing for all
+				 * containers?
+				 */
+				dev->fsa_dev[container].config_waiting_on =
+					AifEnContainerChange;
+				dev->fsa_dev[container].config_needed = DELETE;
+			}
+		}
+		break;
+	}
+
+	device_config_needed = NOTHING;
+	for (container = 0; container < dev->maximum_num_containers;
+	    ++container) {
+		if ((dev->fsa_dev[container].config_waiting_on == 0)
+		 && (dev->fsa_dev[container].config_needed != NOTHING)) {
+			device_config_needed =
+				dev->fsa_dev[container].config_needed;
+			dev->fsa_dev[container].config_needed = NOTHING;
+			break;
+		}
+	}
+	if (device_config_needed == NOTHING)
+		return;
+
+	/*
+	 *	If we decided that a re-configuration needs to be done,
+	 * schedule it here on the way out the door, please close the door
+	 * behind you.
+	 */
+
+	busy = 0;
+
+
+	/*
+	 *	Find the Scsi_Device associated with the SCSI address,
+	 * and mark it as changed, invalidating the cache. This deals
+	 * with changes to existing device IDs.
+	 */
+
+	if (!dev || !dev->scsi_host_ptr)
+		return;
+	/*
+	 * force reload of disk info via probe_container
+	 */
+	if ((device_config_needed == CHANGE)
+	 && (dev->fsa_dev[container].valid == 1))
+		dev->fsa_dev[container].valid = 2;
+	if ((device_config_needed == CHANGE) ||
+			(device_config_needed == ADD))
+		probe_container(dev, container);
+	device = scsi_device_lookup(dev->scsi_host_ptr, 
+		CONTAINER_TO_CHANNEL(container), 
+		CONTAINER_TO_ID(container), 
+		CONTAINER_TO_LUN(container));
+	if (device) {
+		switch (device_config_needed) {
+		case DELETE:
+			scsi_remove_device(device);
+			break;
+		case CHANGE:
+			if (!dev->fsa_dev[container].valid) {
+				scsi_remove_device(device);
+				break;
+			}
+			scsi_rescan_device(&device->sdev_gendev);
+
+		default:
+			break;
+		}
+		scsi_device_put(device);
+	}
+	if (device_config_needed == ADD) {
+		scsi_add_device(dev->scsi_host_ptr,
+		  CONTAINER_TO_CHANNEL(container),
+		  CONTAINER_TO_ID(container),
+		  CONTAINER_TO_LUN(container));
+	}
+
+}
+
 /**
  *	aac_command_thread	-	command processing thread
  *	@dev: Adapter to monitor
@@ -805,7 +1019,6 @@ int aac_command_thread(struct aac_dev * dev)
 {
 	struct hw_fib *hw_fib, *hw_newfib;
 	struct fib *fib, *newfib;
-	struct aac_queue_block *queues = dev->queues;
 	struct aac_fib_context *fibctx;
 	unsigned long flags;
 	DECLARE_WAITQUEUE(wait, current);
@@ -825,21 +1038,22 @@ int aac_command_thread(struct aac_dev * dev)
 	 *	Let the DPC know it has a place to send the AIF's to.
 	 */
 	dev->aif_thread = 1;
-	add_wait_queue(&queues->queue[HostNormCmdQueue].cmdready, &wait);
+	add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
 	set_current_state(TASK_INTERRUPTIBLE);
+	dprintk ((KERN_INFO "aac_command_thread start\n"));
 	while(1) 
 	{
-		spin_lock_irqsave(queues->queue[HostNormCmdQueue].lock, flags);
-		while(!list_empty(&(queues->queue[HostNormCmdQueue].cmdq))) {
+		spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
+		while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
 			struct list_head *entry;
 			struct aac_aifcmd * aifcmd;
 
 			set_current_state(TASK_RUNNING);
-		
-			entry = queues->queue[HostNormCmdQueue].cmdq.next;
+	
+			entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
 			list_del(entry);
-			
-			spin_unlock_irqrestore(queues->queue[HostNormCmdQueue].lock, flags);
+		
+			spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
 			fib = list_entry(entry, struct fib, fiblink);
 			/*
 			 *	We will process the FIB here or pass it to a 
@@ -860,6 +1074,7 @@ int aac_command_thread(struct aac_dev * dev)
 			aifcmd = (struct aac_aifcmd *) hw_fib->data;
 			if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
 				/* Handle Driver Notify Events */
+				aac_handle_aif(dev, fib);
 				*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
 				fib_adapter_complete(fib, (u16)sizeof(u32));
 			} else {
@@ -869,9 +1084,62 @@ int aac_command_thread(struct aac_dev * dev)
 				   
 				u32 time_now, time_last;
 				unsigned long flagv;
-				
+				unsigned num;
+				struct hw_fib ** hw_fib_pool, ** hw_fib_p;
+				struct fib ** fib_pool, ** fib_p;
+			
+				/* Sniff events */
+				if ((aifcmd->command == 
+				     cpu_to_le32(AifCmdEventNotify)) ||
+				    (aifcmd->command == 
+				     cpu_to_le32(AifCmdJobProgress))) {
+					aac_handle_aif(dev, fib);
+				}
+ 				
 				time_now = jiffies/HZ;
 
+				/*
+				 * Warning: no sleep allowed while
+				 * holding spinlock. We take the estimate
+				 * and pre-allocate a set of fibs outside the
+				 * lock.
+				 */
+				num = le32_to_cpu(dev->init->AdapterFibsSize)
+				    / sizeof(struct hw_fib); /* some extra */
+				spin_lock_irqsave(&dev->fib_lock, flagv);
+				entry = dev->fib_list.next;
+				while (entry != &dev->fib_list) {
+					entry = entry->next;
+					++num;
+				}
+				spin_unlock_irqrestore(&dev->fib_lock, flagv);
+				hw_fib_pool = NULL;
+				fib_pool = NULL;
+				if (num
+				 && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL)))
+				 && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) {
+					hw_fib_p = hw_fib_pool;
+					fib_p = fib_pool;
+					while (hw_fib_p < &hw_fib_pool[num]) {
+						if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) {
+							--hw_fib_p;
+							break;
+						}
+						if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) {
+							kfree(*(--hw_fib_p));
+							break;
+						}
+					}
+					if ((num = hw_fib_p - hw_fib_pool) == 0) {
+						kfree(fib_pool);
+						fib_pool = NULL;
+						kfree(hw_fib_pool);
+						hw_fib_pool = NULL;
+					}
+				} else if (hw_fib_pool) {
+					kfree(hw_fib_pool);
+					hw_fib_pool = NULL;
+				}
 				spin_lock_irqsave(&dev->fib_lock, flagv);
 				entry = dev->fib_list.next;
 				/*
@@ -880,6 +1148,8 @@ int aac_command_thread(struct aac_dev * dev)
 				 * fib, and then set the event to wake up the
 				 * thread that is waiting for it.
 				 */
+				hw_fib_p = hw_fib_pool;
+				fib_p = fib_pool;
 				while (entry != &dev->fib_list) {
 					/*
 					 * Extract the fibctx
@@ -912,9 +1182,11 @@ int aac_command_thread(struct aac_dev * dev)
 					 * Warning: no sleep allowed while
 					 * holding spinlock
 					 */
-					hw_newfib = kmalloc(sizeof(struct hw_fib), GFP_ATOMIC);
-					newfib = kmalloc(sizeof(struct fib), GFP_ATOMIC);
-					if (newfib && hw_newfib) {
+					if (hw_fib_p < &hw_fib_pool[num]) {
+						hw_newfib = *hw_fib_p;
+						*(hw_fib_p++) = NULL;
+						newfib = *fib_p;
+						*(fib_p++) = NULL;
 						/*
 						 * Make the copy of the FIB
 						 */
@@ -929,15 +1201,11 @@ int aac_command_thread(struct aac_dev * dev)
 						fibctx->count++;
 						/* 
 						 * Set the event to wake up the
-						 * thread that will waiting.
+						 * thread that is waiting.
 						 */
 						up(&fibctx->wait_sem);
 					} else {
 						printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
-						if(newfib)
-							kfree(newfib);
-						if(hw_newfib)
-							kfree(hw_newfib);
 					}
 					entry = entry->next;
 				}
@@ -947,21 +1215,38 @@ int aac_command_thread(struct aac_dev * dev)
 				*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
 				fib_adapter_complete(fib, sizeof(u32));
 				spin_unlock_irqrestore(&dev->fib_lock, flagv);
+				/* Free up the remaining resources */
+				hw_fib_p = hw_fib_pool;
+				fib_p = fib_pool;
+				while (hw_fib_p < &hw_fib_pool[num]) {
+					if (*hw_fib_p)
+						kfree(*hw_fib_p);
+					if (*fib_p)
+						kfree(*fib_p);
+					++fib_p;
+					++hw_fib_p;
+				}
+				if (hw_fib_pool)
+					kfree(hw_fib_pool);
+				if (fib_pool)
+					kfree(fib_pool);
 			}
-			spin_lock_irqsave(queues->queue[HostNormCmdQueue].lock, flags);
 			kfree(fib);
+			spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
 		}
 		/*
 		 *	There are no more AIF's
 		 */
-		spin_unlock_irqrestore(queues->queue[HostNormCmdQueue].lock, flags);
+		spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
 		schedule();
 
 		if(signal_pending(current))
 			break;
 		set_current_state(TASK_INTERRUPTIBLE);
 	}
-	remove_wait_queue(&queues->queue[HostNormCmdQueue].cmdready, &wait);
+	if (dev->queues)
+		remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
 	dev->aif_thread = 0;
 	complete_and_exit(&dev->aif_completion, 0);
+	return 0;
 }
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 4ff29d7..de8490a 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -748,7 +748,8 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 		unique_id++;
 	}
 
-	if (pci_enable_device(pdev))
+	error = pci_enable_device(pdev);
+	if (error)
 		goto out;
 
 	if (pci_set_dma_mask(pdev, 0xFFFFFFFFULL) || 
@@ -772,6 +773,7 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 	shost->irq = pdev->irq;
 	shost->base = pci_resource_start(pdev, 0);
 	shost->unique_id = unique_id;
+	shost->max_cmd_len = 16;
 
 	aac = (struct aac_dev *)shost->hostdata;
 	aac->scsi_host_ptr = shost;	
@@ -799,7 +801,9 @@ static int __devinit aac_probe_one(struct pci_dev *pdev,
 			goto out_free_fibs;
 
 	aac->maximum_num_channels = aac_drivers[index].channels;
-	aac_get_adapter_info(aac);
+	error = aac_get_adapter_info(aac);
+	if (error < 0)
+		goto out_deinit;
 
 	/*
  	 * Lets override negotiations and drop the maximum SG limit to 34
@@ -927,8 +931,8 @@ static int __init aac_init(void)
 	printk(KERN_INFO "Adaptec %s driver (%s)\n",
 	  AAC_DRIVERNAME, aac_driver_version);
 
-	error = pci_module_init(&aac_pci_driver);
-	if (error)
+	error = pci_register_driver(&aac_pci_driver);
+	if (error < 0)
 		return error;
 
 	aac_cfg_major = register_chrdev( 0, "aac", &aac_cfg_fops);
diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index 70c5fb5..d754b32 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -112,6 +112,9 @@ aic7770_remove(struct device *dev)
 	struct ahc_softc *ahc = dev_get_drvdata(dev);
 	u_long s;
 
+	if (ahc->platform_data && ahc->platform_data->host)
+			scsi_remove_host(ahc->platform_data->host);
+
 	ahc_lock(ahc, &s);
 	ahc_intr_enable(ahc, FALSE);
 	ahc_unlock(ahc, &s);
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 6b6d4e2..95c285cc8 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1192,11 +1192,6 @@ ahd_platform_free(struct ahd_softc *ahd)
 	int i, j;
 
 	if (ahd->platform_data != NULL) {
-		if (ahd->platform_data->host != NULL) {
-			scsi_remove_host(ahd->platform_data->host);
-			scsi_host_put(ahd->platform_data->host);
-		}
-
 		/* destroy all of the device and target objects */
 		for (i = 0; i < AHD_NUM_TARGETS; i++) {
 			starget = ahd->platform_data->starget[i];
@@ -1226,6 +1221,9 @@ ahd_platform_free(struct ahd_softc *ahd)
 			release_mem_region(ahd->platform_data->mem_busaddr,
 					   0x1000);
 		}
+		if (ahd->platform_data->host)
+			scsi_host_put(ahd->platform_data->host);
+
 		free(ahd->platform_data, M_DEVBUF);
 	}
 }
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
index 390b538..bf360ae 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
@@ -95,6 +95,9 @@ ahd_linux_pci_dev_remove(struct pci_dev *pdev)
 	struct ahd_softc *ahd = pci_get_drvdata(pdev);
 	u_long s;
 
+	if (ahd->platform_data && ahd->platform_data->host)
+			scsi_remove_host(ahd->platform_data->host);
+
 	ahd_lock(ahd, &s);
 	ahd_intr_enable(ahd, FALSE);
 	ahd_unlock(ahd, &s);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 876d1de..6ee1435 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -1209,11 +1209,6 @@ ahc_platform_free(struct ahc_softc *ahc)
 	int i, j;
 
 	if (ahc->platform_data != NULL) {
-		if (ahc->platform_data->host != NULL) {
-			scsi_remove_host(ahc->platform_data->host);
-			scsi_host_put(ahc->platform_data->host);
-		}
-
 		/* destroy all of the device and target objects */
 		for (i = 0; i < AHC_NUM_TARGETS; i++) {
 			starget = ahc->platform_data->starget[i];
@@ -1242,6 +1237,9 @@ ahc_platform_free(struct ahc_softc *ahc)
 					   0x1000);
 		}
 
+		if (ahc->platform_data->host)
+			scsi_host_put(ahc->platform_data->host);
+
 		free(ahc->platform_data, M_DEVBUF);
 	}
 }
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 3ce77dd..cb30d9c 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -143,6 +143,9 @@ ahc_linux_pci_dev_remove(struct pci_dev *pdev)
 	struct ahc_softc *ahc = pci_get_drvdata(pdev);
 	u_long s;
 
+	if (ahc->platform_data && ahc->platform_data->host)
+			scsi_remove_host(ahc->platform_data->host);
+
 	ahc_lock(ahc, &s);
 	ahc_intr_enable(ahc, FALSE);
 	ahc_unlock(ahc, &s);
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index f2a72d3..02fe371 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -176,6 +176,7 @@ void scsi_remove_host(struct Scsi_Host *shost)
 	transport_unregister_device(&shost->shost_gendev);
 	class_device_unregister(&shost->shost_classdev);
 	device_del(&shost->shost_gendev);
+	scsi_proc_hostdir_rm(shost->hostt);
 }
 EXPORT_SYMBOL(scsi_remove_host);
 
@@ -262,7 +263,6 @@ static void scsi_host_dev_release(struct device *dev)
 	if (shost->work_q)
 		destroy_workqueue(shost->work_q);
 
-	scsi_proc_hostdir_rm(shost->hostt);
 	scsi_destroy_command_freelist(shost);
 	kfree(shost->shost_data);
 
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index 86eaf6d..acae7c4 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -973,10 +973,10 @@ lpfc_get_host_fabric_name (struct Scsi_Host *shost)
 	if ((phba->fc_flag & FC_FABRIC) ||
 	    ((phba->fc_topology == TOPOLOGY_LOOP) &&
 	     (phba->fc_flag & FC_PUBLIC_LOOP)))
-		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.wwn);
+		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
 	else
 		/* fabric is local port if there is no F/FL_Port */
-		node_name = wwn_to_u64(phba->fc_nodename.wwn);
+		node_name = wwn_to_u64(phba->fc_nodename.u.wwn);
 
 	spin_unlock_irq(shost->host_lock);
 
@@ -1110,7 +1110,7 @@ lpfc_get_starget_node_name(struct scsi_target *starget)
 	/* Search the mapped list for this target ID */
 	list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
 		if (starget->id == ndlp->nlp_sid) {
-			node_name = wwn_to_u64(ndlp->nlp_nodename.wwn);
+			node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
 			break;
 		}
 	}
@@ -1131,7 +1131,7 @@ lpfc_get_starget_port_name(struct scsi_target *starget)
 	/* Search the mapped list for this target ID */
 	list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
 		if (starget->id == ndlp->nlp_sid) {
-			port_name = wwn_to_u64(ndlp->nlp_portname.wwn);
+			port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 			break;
 		}
 	}
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 4fb8eb0..56052f4 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -1019,8 +1019,8 @@ lpfc_register_remote_port(struct lpfc_hba * phba,
 	struct fc_rport_identifiers rport_ids;
 
 	/* Remote port has reappeared. Re-register w/ FC transport */
-	rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.wwn);
-	rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.wwn);
+	rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
+	rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
 	rport_ids.port_id = ndlp->nlp_DID;
 	rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
 	if (ndlp->nlp_type & NLP_FCP_TARGET)
diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 047a87c..86c4198 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -280,9 +280,9 @@ struct lpfc_name {
 #define NAME_CCITT_GR_TYPE  0xE
 			uint8_t IEEEextLsb;	/* FC Word 0, bit 16:23, IEEE extended Lsb */
 			uint8_t IEEE[6];	/* FC IEEE address */
-		};
+		} s;
 		uint8_t wwn[8];
-	};
+	} u;
 };
 
 struct csp {
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 454058f..0856ff7 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -285,7 +285,7 @@ lpfc_config_port_post(struct lpfc_hba * phba)
 	if (phba->SerialNumber[0] == 0) {
 		uint8_t *outptr;
 
-		outptr = (uint8_t *) & phba->fc_nodename.IEEE[0];
+		outptr = &phba->fc_nodename.u.s.IEEE[0];
 		for (i = 0; i < 12; i++) {
 			status = *outptr++;
 			j = ((status & 0xf0) >> 4);
@@ -1523,8 +1523,8 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
 	 * Must done after lpfc_sli_hba_setup()
 	 */
 
-	fc_host_node_name(host) = wwn_to_u64(phba->fc_nodename.wwn);
-	fc_host_port_name(host) = wwn_to_u64(phba->fc_portname.wwn);
+	fc_host_node_name(host) = wwn_to_u64(phba->fc_nodename.u.wwn);
+	fc_host_port_name(host) = wwn_to_u64(phba->fc_portname.u.wwn);
 	fc_host_supported_classes(host) = FC_COS_CLASS3;
 
 	memset(fc_host_supported_fc4s(host), 0,
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 6f308eb..61a6fd8 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -621,8 +621,6 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
 	if(islogical) {
 		switch (cmd->cmnd[0]) {
 		case TEST_UNIT_READY:
-			memset(cmd->request_buffer, 0, cmd->request_bufflen);
-
 #if MEGA_HAVE_CLUSTERING
 			/*
 			 * Do we support clustering and is the support enabled
@@ -652,11 +650,28 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
 			return NULL;
 #endif
 
-		case MODE_SENSE:
+		case MODE_SENSE: {
+			char *buf;
+
+			if (cmd->use_sg) {
+				struct scatterlist *sg;
+
+				sg = (struct scatterlist *)cmd->request_buffer;
+				buf = kmap_atomic(sg->page, KM_IRQ0) +
+					sg->offset;
+			} else
+				buf = cmd->request_buffer;
 			memset(cmd->request_buffer, 0, cmd->cmnd[4]);
+			if (cmd->use_sg) {
+				struct scatterlist *sg;
+
+				sg = (struct scatterlist *)cmd->request_buffer;
+				kunmap_atomic(buf - sg->offset, KM_IRQ0);
+			}
 			cmd->result = (DID_OK << 16);
 			cmd->scsi_done(cmd);
 			return NULL;
+		}
 
 		case READ_CAPACITY:
 		case INQUIRY:
@@ -1685,14 +1700,23 @@ mega_rundoneq (adapter_t *adapter)
 static void
 mega_free_scb(adapter_t *adapter, scb_t *scb)
 {
+	unsigned long length;
+
 	switch( scb->dma_type ) {
 
 	case MEGA_DMA_TYPE_NONE:
 		break;
 
 	case MEGA_BULK_DATA:
+		if (scb->cmd->use_sg == 0)
+			length = scb->cmd->request_bufflen;
+		else {
+			struct scatterlist *sgl =
+				(struct scatterlist *)scb->cmd->request_buffer;
+			length = sgl->length;
+		}
 		pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
-			scb->cmd->request_bufflen, scb->dma_direction);
+			       length, scb->dma_direction);
 		break;
 
 	case MEGA_SGLIST:
@@ -1741,6 +1765,7 @@ mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
 	struct scatterlist	*sgl;
 	struct page	*page;
 	unsigned long	offset;
+	unsigned int	length;
 	Scsi_Cmnd	*cmd;
 	int	sgcnt;
 	int	idx;
@@ -1748,14 +1773,23 @@ mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
 	cmd = scb->cmd;
 
 	/* Scatter-gather not used */
-	if( !cmd->use_sg ) {
-
-		page = virt_to_page(cmd->request_buffer);
-		offset = offset_in_page(cmd->request_buffer);
+	if( cmd->use_sg == 0 || (cmd->use_sg == 1 && 
+				 !adapter->has_64bit_addr)) {
+
+		if (cmd->use_sg == 0) {
+			page = virt_to_page(cmd->request_buffer);
+			offset = offset_in_page(cmd->request_buffer);
+			length = cmd->request_bufflen;
+		} else {
+			sgl = (struct scatterlist *)cmd->request_buffer;
+			page = sgl->page;
+			offset = sgl->offset;
+			length = sgl->length;
+		}
 
 		scb->dma_h_bulkdata = pci_map_page(adapter->dev,
 						  page, offset,
-						  cmd->request_bufflen,
+						  length,
 						  scb->dma_direction);
 		scb->dma_type = MEGA_BULK_DATA;
 
@@ -1765,14 +1799,14 @@ mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
 		 */
 		if( adapter->has_64bit_addr ) {
 			scb->sgl64[0].address = scb->dma_h_bulkdata;
-			scb->sgl64[0].length = cmd->request_bufflen;
+			scb->sgl64[0].length = length;
 			*buf = (u32)scb->sgl_dma_addr;
-			*len = (u32)cmd->request_bufflen;
+			*len = (u32)length;
 			return 1;
 		}
 		else {
 			*buf = (u32)scb->dma_h_bulkdata;
-			*len = (u32)cmd->request_bufflen;
+			*len = (u32)length;
 		}
 		return 0;
 	}
@@ -1791,27 +1825,23 @@ mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
 
 	if( sgcnt > adapter->sglen ) BUG();
 
+	*len = 0;
+
 	for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
 
 		if( adapter->has_64bit_addr ) {
 			scb->sgl64[idx].address = sg_dma_address(sgl);
-			scb->sgl64[idx].length = sg_dma_len(sgl);
+			*len += scb->sgl64[idx].length = sg_dma_len(sgl);
 		}
 		else {
 			scb->sgl[idx].address = sg_dma_address(sgl);
-			scb->sgl[idx].length = sg_dma_len(sgl);
+			*len += scb->sgl[idx].length = sg_dma_len(sgl);
 		}
 	}
 
 	/* Reset pointer and length fields */
 	*buf = scb->sgl_dma_addr;
 
-	/*
-	 * For passthru command, dataxferlen must be set, even for commands
-	 * with a sg list
-	 */
-	*len = (u32)cmd->request_bufflen;
-
 	/* Return count of SG requests */
 	return sgcnt;
 }
diff --git a/drivers/scsi/megaraid/Kconfig.megaraid b/drivers/scsi/megaraid/Kconfig.megaraid
index 917d591..7363e12 100644
--- a/drivers/scsi/megaraid/Kconfig.megaraid
+++ b/drivers/scsi/megaraid/Kconfig.megaraid
@@ -76,3 +76,12 @@ config MEGARAID_LEGACY
 	To compile this driver as a module, choose M here: the
 	module will be called megaraid
 endif
+
+config MEGARAID_SAS
+	tristate "LSI Logic MegaRAID SAS RAID Module"
+	depends on PCI && SCSI
+	help
+	Module for LSI Logic's SAS based RAID controllers.
+	To compile this driver as a module, choose 'm' here.
+	Module will be called megaraid_sas
+
diff --git a/drivers/scsi/megaraid/Makefile b/drivers/scsi/megaraid/Makefile
index 6dd99f2..f469915 100644
--- a/drivers/scsi/megaraid/Makefile
+++ b/drivers/scsi/megaraid/Makefile
@@ -1,2 +1,3 @@
 obj-$(CONFIG_MEGARAID_MM)	+= megaraid_mm.o
 obj-$(CONFIG_MEGARAID_MAILBOX)	+= megaraid_mbox.o
+obj-$(CONFIG_MEGARAID_SAS)	+= megaraid_sas.o
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
new file mode 100644
index 0000000..1b3148e
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -0,0 +1,2805 @@
+/*
+ *
+ *		Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2003-2005  LSI Logic Corporation.
+ *
+ *	   This program is free software; you can redistribute it and/or
+ *	   modify it under the terms of the GNU General Public License
+ *	   as published by the Free Software Foundation; either version
+ *	   2 of the License, or (at your option) any later version.
+ *
+ * FILE		: megaraid_sas.c
+ * Version	: v00.00.02.00-rc4
+ *
+ * Authors:
+ * 	Sreenivas Bagalkote	<Sreenivas.Bagalkote@lsil.com>
+ * 	Sumant Patro		<Sumant.Patro@lsil.com>
+ *
+ * List of supported controllers
+ *
+ * OEM	Product Name			VID	DID	SSVID	SSID
+ * ---	------------			---	---	----	----
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/version.h>
+#include <linux/moduleparam.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/uio.h>
+#include <asm/uaccess.h>
+#include <linux/compat.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+#include "megaraid_sas.h"
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION(MEGASAS_VERSION);
+MODULE_AUTHOR("sreenivas.bagalkote@lsil.com");
+MODULE_DESCRIPTION("LSI Logic MegaRAID SAS Driver");
+
+/*
+ * PCI ID table for all supported controllers
+ */
+static struct pci_device_id megasas_pci_table[] = {
+
+	{
+	 PCI_VENDOR_ID_LSI_LOGIC,
+	 PCI_DEVICE_ID_LSI_SAS1064R,
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 },
+	{
+	 PCI_VENDOR_ID_DELL,
+	 PCI_DEVICE_ID_DELL_PERC5,
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 },
+	{0}			/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(pci, megasas_pci_table);
+
+static int megasas_mgmt_majorno;
+static struct megasas_mgmt_info megasas_mgmt_info;
+static struct fasync_struct *megasas_async_queue;
+static DECLARE_MUTEX(megasas_async_queue_mutex);
+
+/**
+ * megasas_get_cmd -	Get a command from the free pool
+ * @instance:		Adapter soft state
+ *
+ * Returns a free command from the pool
+ */
+static inline struct megasas_cmd *megasas_get_cmd(struct megasas_instance
+						  *instance)
+{
+	unsigned long flags;
+	struct megasas_cmd *cmd = NULL;
+
+	spin_lock_irqsave(&instance->cmd_pool_lock, flags);
+
+	if (!list_empty(&instance->cmd_pool)) {
+		cmd = list_entry((&instance->cmd_pool)->next,
+				 struct megasas_cmd, list);
+		list_del_init(&cmd->list);
+	} else {
+		printk(KERN_ERR "megasas: Command pool empty!\n");
+	}
+
+	spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
+	return cmd;
+}
+
+/**
+ * megasas_return_cmd -	Return a cmd to free command pool
+ * @instance:		Adapter soft state
+ * @cmd:		Command packet to be returned to free command pool
+ */
+static inline void
+megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&instance->cmd_pool_lock, flags);
+
+	cmd->scmd = NULL;
+	list_add_tail(&cmd->list, &instance->cmd_pool);
+
+	spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
+}
+
+/**
+ * megasas_enable_intr -	Enables interrupts
+ * @regs:			MFI register set
+ */
+static inline void
+megasas_enable_intr(struct megasas_register_set __iomem * regs)
+{
+	writel(1, &(regs)->outbound_intr_mask);
+
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_intr_mask);
+}
+
+/**
+ * megasas_disable_intr -	Disables interrupts
+ * @regs:			MFI register set
+ */
+static inline void
+megasas_disable_intr(struct megasas_register_set __iomem * regs)
+{
+	u32 mask = readl(&regs->outbound_intr_mask) & (~0x00000001);
+	writel(mask, &regs->outbound_intr_mask);
+
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_intr_mask);
+}
+
+/**
+ * megasas_issue_polled -	Issues a polling command
+ * @instance:			Adapter soft state
+ * @cmd:			Command packet to be issued 
+ *
+ * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
+ */
+static int
+megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
+{
+	int i;
+	u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000;
+
+	struct megasas_header *frame_hdr = &cmd->frame->hdr;
+
+	frame_hdr->cmd_status = 0xFF;
+	frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
+
+	/*
+	 * Issue the frame using inbound queue port
+	 */
+	writel(cmd->frame_phys_addr >> 3,
+	       &instance->reg_set->inbound_queue_port);
+
+	/*
+	 * Wait for cmd_status to change
+	 */
+	for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) {
+		rmb();
+		msleep(1);
+	}
+
+	if (frame_hdr->cmd_status == 0xff)
+		return -ETIME;
+
+	return 0;
+}
+
+/**
+ * megasas_issue_blocked_cmd -	Synchronous wrapper around regular FW cmds
+ * @instance:			Adapter soft state
+ * @cmd:			Command to be issued
+ *
+ * This function waits on an event for the command to be returned from ISR.
+ * Used to issue ioctl commands.
+ */
+static int
+megasas_issue_blocked_cmd(struct megasas_instance *instance,
+			  struct megasas_cmd *cmd)
+{
+	cmd->cmd_status = ENODATA;
+
+	writel(cmd->frame_phys_addr >> 3,
+	       &instance->reg_set->inbound_queue_port);
+
+	wait_event(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA));
+
+	return 0;
+}
+
+/**
+ * megasas_issue_blocked_abort_cmd -	Aborts previously issued cmd
+ * @instance:				Adapter soft state
+ * @cmd_to_abort:			Previously issued cmd to be aborted
+ *
+ * MFI firmware can abort previously issued AEN comamnd (automatic event
+ * notification). The megasas_issue_blocked_abort_cmd() issues such abort
+ * cmd and blocks till it is completed.
+ */
+static int
+megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
+				struct megasas_cmd *cmd_to_abort)
+{
+	struct megasas_cmd *cmd;
+	struct megasas_abort_frame *abort_fr;
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd)
+		return -1;
+
+	abort_fr = &cmd->frame->abort;
+
+	/*
+	 * Prepare and issue the abort frame
+	 */
+	abort_fr->cmd = MFI_CMD_ABORT;
+	abort_fr->cmd_status = 0xFF;
+	abort_fr->flags = 0;
+	abort_fr->abort_context = cmd_to_abort->index;
+	abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
+	abort_fr->abort_mfi_phys_addr_hi = 0;
+
+	cmd->sync_cmd = 1;
+	cmd->cmd_status = 0xFF;
+
+	writel(cmd->frame_phys_addr >> 3,
+	       &instance->reg_set->inbound_queue_port);
+
+	/*
+	 * Wait for this cmd to complete
+	 */
+	wait_event(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF));
+
+	megasas_return_cmd(instance, cmd);
+	return 0;
+}
+
+/**
+ * megasas_make_sgl32 -	Prepares 32-bit SGL
+ * @instance:		Adapter soft state
+ * @scp:		SCSI command from the mid-layer
+ * @mfi_sgl:		SGL to be filled in
+ *
+ * If successful, this function returns the number of SG elements. Otherwise,
+ * it returnes -1.
+ */
+static inline int
+megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
+		   union megasas_sgl *mfi_sgl)
+{
+	int i;
+	int sge_count;
+	struct scatterlist *os_sgl;
+
+	/*
+	 * Return 0 if there is no data transfer
+	 */
+	if (!scp->request_buffer || !scp->request_bufflen)
+		return 0;
+
+	if (!scp->use_sg) {
+		mfi_sgl->sge32[0].phys_addr = pci_map_single(instance->pdev,
+							     scp->
+							     request_buffer,
+							     scp->
+							     request_bufflen,
+							     scp->
+							     sc_data_direction);
+		mfi_sgl->sge32[0].length = scp->request_bufflen;
+
+		return 1;
+	}
+
+	os_sgl = (struct scatterlist *)scp->request_buffer;
+	sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg,
+			       scp->sc_data_direction);
+
+	for (i = 0; i < sge_count; i++, os_sgl++) {
+		mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
+		mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
+	}
+
+	return sge_count;
+}
+
+/**
+ * megasas_make_sgl64 -	Prepares 64-bit SGL
+ * @instance:		Adapter soft state
+ * @scp:		SCSI command from the mid-layer
+ * @mfi_sgl:		SGL to be filled in
+ *
+ * If successful, this function returns the number of SG elements. Otherwise,
+ * it returnes -1.
+ */
+static inline int
+megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
+		   union megasas_sgl *mfi_sgl)
+{
+	int i;
+	int sge_count;
+	struct scatterlist *os_sgl;
+
+	/*
+	 * Return 0 if there is no data transfer
+	 */
+	if (!scp->request_buffer || !scp->request_bufflen)
+		return 0;
+
+	if (!scp->use_sg) {
+		mfi_sgl->sge64[0].phys_addr = pci_map_single(instance->pdev,
+							     scp->
+							     request_buffer,
+							     scp->
+							     request_bufflen,
+							     scp->
+							     sc_data_direction);
+
+		mfi_sgl->sge64[0].length = scp->request_bufflen;
+
+		return 1;
+	}
+
+	os_sgl = (struct scatterlist *)scp->request_buffer;
+	sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg,
+			       scp->sc_data_direction);
+
+	for (i = 0; i < sge_count; i++, os_sgl++) {
+		mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
+		mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
+	}
+
+	return sge_count;
+}
+
+/**
+ * megasas_build_dcdb -	Prepares a direct cdb (DCDB) command
+ * @instance:		Adapter soft state
+ * @scp:		SCSI command
+ * @cmd:		Command to be prepared in
+ *
+ * This function prepares CDB commands. These are typcially pass-through
+ * commands to the devices.
+ */
+static inline int
+megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
+		   struct megasas_cmd *cmd)
+{
+	u32 sge_sz;
+	int sge_bytes;
+	u32 is_logical;
+	u32 device_id;
+	u16 flags = 0;
+	struct megasas_pthru_frame *pthru;
+
+	is_logical = MEGASAS_IS_LOGICAL(scp);
+	device_id = MEGASAS_DEV_INDEX(instance, scp);
+	pthru = (struct megasas_pthru_frame *)cmd->frame;
+
+	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
+		flags = MFI_FRAME_DIR_WRITE;
+	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+		flags = MFI_FRAME_DIR_READ;
+	else if (scp->sc_data_direction == PCI_DMA_NONE)
+		flags = MFI_FRAME_DIR_NONE;
+
+	/*
+	 * Prepare the DCDB frame
+	 */
+	pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
+	pthru->cmd_status = 0x0;
+	pthru->scsi_status = 0x0;
+	pthru->target_id = device_id;
+	pthru->lun = scp->device->lun;
+	pthru->cdb_len = scp->cmd_len;
+	pthru->timeout = 0;
+	pthru->flags = flags;
+	pthru->data_xfer_len = scp->request_bufflen;
+
+	memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
+
+	/*
+	 * Construct SGL
+	 */
+	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
+	    sizeof(struct megasas_sge32);
+
+	if (IS_DMA64) {
+		pthru->flags |= MFI_FRAME_SGL64;
+		pthru->sge_count = megasas_make_sgl64(instance, scp,
+						      &pthru->sgl);
+	} else
+		pthru->sge_count = megasas_make_sgl32(instance, scp,
+						      &pthru->sgl);
+
+	/*
+	 * Sense info specific
+	 */
+	pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
+	pthru->sense_buf_phys_addr_hi = 0;
+	pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
+
+	sge_bytes = sge_sz * pthru->sge_count;
+
+	/*
+	 * Compute the total number of frames this command consumes. FW uses
+	 * this number to pull sufficient number of frames from host memory.
+	 */
+	cmd->frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
+	    ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) + 1;
+
+	if (cmd->frame_count > 7)
+		cmd->frame_count = 8;
+
+	return cmd->frame_count;
+}
+
+/**
+ * megasas_build_ldio -	Prepares IOs to logical devices
+ * @instance:		Adapter soft state
+ * @scp:		SCSI command
+ * @cmd:		Command to to be prepared
+ *
+ * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
+ */
+static inline int
+megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
+		   struct megasas_cmd *cmd)
+{
+	u32 sge_sz;
+	int sge_bytes;
+	u32 device_id;
+	u8 sc = scp->cmnd[0];
+	u16 flags = 0;
+	struct megasas_io_frame *ldio;
+
+	device_id = MEGASAS_DEV_INDEX(instance, scp);
+	ldio = (struct megasas_io_frame *)cmd->frame;
+
+	if (scp->sc_data_direction == PCI_DMA_TODEVICE)
+		flags = MFI_FRAME_DIR_WRITE;
+	else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
+		flags = MFI_FRAME_DIR_READ;
+
+	/*
+	 * Preare the Logical IO frame: 2nd bit is zero for all read cmds
+	 */
+	ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
+	ldio->cmd_status = 0x0;
+	ldio->scsi_status = 0x0;
+	ldio->target_id = device_id;
+	ldio->timeout = 0;
+	ldio->reserved_0 = 0;
+	ldio->pad_0 = 0;
+	ldio->flags = flags;
+	ldio->start_lba_hi = 0;
+	ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
+
+	/*
+	 * 6-byte READ(0x08) or WRITE(0x0A) cdb
+	 */
+	if (scp->cmd_len == 6) {
+		ldio->lba_count = (u32) scp->cmnd[4];
+		ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
+		    ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
+
+		ldio->start_lba_lo &= 0x1FFFFF;
+	}
+
+	/*
+	 * 10-byte READ(0x28) or WRITE(0x2A) cdb
+	 */
+	else if (scp->cmd_len == 10) {
+		ldio->lba_count = (u32) scp->cmnd[8] |
+		    ((u32) scp->cmnd[7] << 8);
+		ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
+		    ((u32) scp->cmnd[3] << 16) |
+		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+	}
+
+	/*
+	 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
+	 */
+	else if (scp->cmd_len == 12) {
+		ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
+		    ((u32) scp->cmnd[7] << 16) |
+		    ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
+
+		ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
+		    ((u32) scp->cmnd[3] << 16) |
+		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+	}
+
+	/*
+	 * 16-byte READ(0x88) or WRITE(0x8A) cdb
+	 */
+	else if (scp->cmd_len == 16) {
+		ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
+		    ((u32) scp->cmnd[11] << 16) |
+		    ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
+
+		ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
+		    ((u32) scp->cmnd[7] << 16) |
+		    ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
+
+		ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
+		    ((u32) scp->cmnd[3] << 16) |
+		    ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
+
+	}
+
+	/*
+	 * Construct SGL
+	 */
+	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
+	    sizeof(struct megasas_sge32);
+
+	if (IS_DMA64) {
+		ldio->flags |= MFI_FRAME_SGL64;
+		ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
+	} else
+		ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
+
+	/*
+	 * Sense info specific
+	 */
+	ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
+	ldio->sense_buf_phys_addr_hi = 0;
+	ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
+
+	sge_bytes = sge_sz * ldio->sge_count;
+
+	cmd->frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
+	    ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) + 1;
+
+	if (cmd->frame_count > 7)
+		cmd->frame_count = 8;
+
+	return cmd->frame_count;
+}
+
+/**
+ * megasas_build_cmd -	Prepares a command packet
+ * @instance:		Adapter soft state
+ * @scp:		SCSI command
+ * @frame_count:	[OUT] Number of frames used to prepare this command
+ */
+static inline struct megasas_cmd *megasas_build_cmd(struct megasas_instance
+						    *instance,
+						    struct scsi_cmnd *scp,
+						    int *frame_count)
+{
+	u32 logical_cmd;
+	struct megasas_cmd *cmd;
+
+	/*
+	 * Find out if this is logical or physical drive command.
+	 */
+	logical_cmd = MEGASAS_IS_LOGICAL(scp);
+
+	/*
+	 * Logical drive command
+	 */
+	if (logical_cmd) {
+
+		if (scp->device->id >= MEGASAS_MAX_LD) {
+			scp->result = DID_BAD_TARGET << 16;
+			return NULL;
+		}
+
+		switch (scp->cmnd[0]) {
+
+		case READ_10:
+		case WRITE_10:
+		case READ_12:
+		case WRITE_12:
+		case READ_6:
+		case WRITE_6:
+		case READ_16:
+		case WRITE_16:
+			/*
+			 * Fail for LUN > 0
+			 */
+			if (scp->device->lun) {
+				scp->result = DID_BAD_TARGET << 16;
+				return NULL;
+			}
+
+			cmd = megasas_get_cmd(instance);
+
+			if (!cmd) {
+				scp->result = DID_IMM_RETRY << 16;
+				return NULL;
+			}
+
+			*frame_count = megasas_build_ldio(instance, scp, cmd);
+
+			if (!(*frame_count)) {
+				megasas_return_cmd(instance, cmd);
+				return NULL;
+			}
+
+			return cmd;
+
+		default:
+			/*
+			 * Fail for LUN > 0
+			 */
+			if (scp->device->lun) {
+				scp->result = DID_BAD_TARGET << 16;
+				return NULL;
+			}
+
+			cmd = megasas_get_cmd(instance);
+
+			if (!cmd) {
+				scp->result = DID_IMM_RETRY << 16;
+				return NULL;
+			}
+
+			*frame_count = megasas_build_dcdb(instance, scp, cmd);
+
+			if (!(*frame_count)) {
+				megasas_return_cmd(instance, cmd);
+				return NULL;
+			}
+
+			return cmd;
+		}
+	} else {
+		cmd = megasas_get_cmd(instance);
+
+		if (!cmd) {
+			scp->result = DID_IMM_RETRY << 16;
+			return NULL;
+		}
+
+		*frame_count = megasas_build_dcdb(instance, scp, cmd);
+
+		if (!(*frame_count)) {
+			megasas_return_cmd(instance, cmd);
+			return NULL;
+		}
+
+		return cmd;
+	}
+
+	return NULL;
+}
+
+/**
+ * megasas_queue_command -	Queue entry point
+ * @scmd:			SCSI command to be queued
+ * @done:			Callback entry point
+ */
+static int
+megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
+{
+	u32 frame_count;
+	unsigned long flags;
+	struct megasas_cmd *cmd;
+	struct megasas_instance *instance;
+
+	instance = (struct megasas_instance *)
+	    scmd->device->host->hostdata;
+	scmd->scsi_done = done;
+	scmd->result = 0;
+
+	cmd = megasas_build_cmd(instance, scmd, &frame_count);
+
+	if (!cmd) {
+		done(scmd);
+		return 0;
+	}
+
+	cmd->scmd = scmd;
+	scmd->SCp.ptr = (char *)cmd;
+	scmd->SCp.sent_command = jiffies;
+
+	/*
+	 * Issue the command to the FW
+	 */
+	spin_lock_irqsave(&instance->instance_lock, flags);
+	instance->fw_outstanding++;
+	spin_unlock_irqrestore(&instance->instance_lock, flags);
+
+	writel(((cmd->frame_phys_addr >> 3) | (cmd->frame_count - 1)),
+	       &instance->reg_set->inbound_queue_port);
+
+	return 0;
+}
+
+/**
+ * megasas_wait_for_outstanding -	Wait for all outstanding cmds
+ * @instance:				Adapter soft state
+ *
+ * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to
+ * complete all its outstanding commands. Returns error if one or more IOs
+ * are pending after this time period. It also marks the controller dead.
+ */
+static int megasas_wait_for_outstanding(struct megasas_instance *instance)
+{
+	int i;
+	u32 wait_time = MEGASAS_RESET_WAIT_TIME;
+
+	for (i = 0; i < wait_time; i++) {
+
+		if (!instance->fw_outstanding)
+			break;
+
+		if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
+			printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
+			       "commands to complete\n", i,
+			       instance->fw_outstanding);
+		}
+
+		msleep(1000);
+	}
+
+	if (instance->fw_outstanding) {
+		instance->hw_crit_error = 1;
+		return FAILED;
+	}
+
+	return SUCCESS;
+}
+
+/**
+ * megasas_generic_reset -	Generic reset routine
+ * @scmd:			Mid-layer SCSI command
+ *
+ * This routine implements a generic reset handler for device, bus and host
+ * reset requests. Device, bus and host specific reset handlers can use this
+ * function after they do their specific tasks.
+ */
+static int megasas_generic_reset(struct scsi_cmnd *scmd)
+{
+	int ret_val;
+	struct megasas_instance *instance;
+
+	instance = (struct megasas_instance *)scmd->device->host->hostdata;
+
+	printk(KERN_NOTICE "megasas: RESET -%ld cmd=%x <c=%d t=%d l=%d>\n",
+	       scmd->serial_number, scmd->cmnd[0], scmd->device->channel,
+	       scmd->device->id, scmd->device->lun);
+
+	if (instance->hw_crit_error) {
+		printk(KERN_ERR "megasas: cannot recover from previous reset "
+		       "failures\n");
+		return FAILED;
+	}
+
+	spin_unlock(scmd->device->host->host_lock);
+
+	ret_val = megasas_wait_for_outstanding(instance);
+
+	if (ret_val == SUCCESS)
+		printk(KERN_NOTICE "megasas: reset successful \n");
+	else
+		printk(KERN_ERR "megasas: failed to do reset\n");
+
+	spin_lock(scmd->device->host->host_lock);
+
+	return ret_val;
+}
+
+static enum scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
+{
+	unsigned long seconds;
+
+	if (scmd->SCp.ptr) {
+		seconds = (jiffies - scmd->SCp.sent_command) / HZ;
+
+		if (seconds < 90) {
+			return EH_RESET_TIMER;
+		} else {
+			return EH_NOT_HANDLED;
+		}
+	}
+
+	return EH_HANDLED;
+}
+
+/**
+ * megasas_reset_device -	Device reset handler entry point
+ */
+static int megasas_reset_device(struct scsi_cmnd *scmd)
+{
+	int ret;
+
+	/*
+	 * First wait for all commands to complete
+	 */
+	ret = megasas_generic_reset(scmd);
+
+	return ret;
+}
+
+/**
+ * megasas_reset_bus_host -	Bus & host reset handler entry point
+ */
+static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
+{
+	int ret;
+
+	/*
+	 * Frist wait for all commands to complete
+	 */
+	ret = megasas_generic_reset(scmd);
+
+	return ret;
+}
+
+/**
+ * megasas_service_aen -	Processes an event notification
+ * @instance:			Adapter soft state
+ * @cmd:			AEN command completed by the ISR
+ *
+ * For AEN, driver sends a command down to FW that is held by the FW till an
+ * event occurs. When an event of interest occurs, FW completes the command
+ * that it was previously holding.
+ *
+ * This routines sends SIGIO signal to processes that have registered with the
+ * driver for AEN.
+ */
+static void
+megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
+{
+	/*
+	 * Don't signal app if it is just an aborted previously registered aen
+	 */
+	if (!cmd->abort_aen)
+		kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
+	else
+		cmd->abort_aen = 0;
+
+	instance->aen_cmd = NULL;
+	megasas_return_cmd(instance, cmd);
+}
+
+/*
+ * Scsi host template for megaraid_sas driver
+ */
+static struct scsi_host_template megasas_template = {
+
+	.module = THIS_MODULE,
+	.name = "LSI Logic SAS based MegaRAID driver",
+	.proc_name = "megaraid_sas",
+	.queuecommand = megasas_queue_command,
+	.eh_device_reset_handler = megasas_reset_device,
+	.eh_bus_reset_handler = megasas_reset_bus_host,
+	.eh_host_reset_handler = megasas_reset_bus_host,
+	.eh_timed_out = megasas_reset_timer,
+	.use_clustering = ENABLE_CLUSTERING,
+};
+
+/**
+ * megasas_complete_int_cmd -	Completes an internal command
+ * @instance:			Adapter soft state
+ * @cmd:			Command to be completed
+ *
+ * The megasas_issue_blocked_cmd() function waits for a command to complete
+ * after it issues a command. This function wakes up that waiting routine by
+ * calling wake_up() on the wait queue.
+ */
+static void
+megasas_complete_int_cmd(struct megasas_instance *instance,
+			 struct megasas_cmd *cmd)
+{
+	cmd->cmd_status = cmd->frame->io.cmd_status;
+
+	if (cmd->cmd_status == ENODATA) {
+		cmd->cmd_status = 0;
+	}
+	wake_up(&instance->int_cmd_wait_q);
+}
+
+/**
+ * megasas_complete_abort -	Completes aborting a command
+ * @instance:			Adapter soft state
+ * @cmd:			Cmd that was issued to abort another cmd
+ *
+ * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q 
+ * after it issues an abort on a previously issued command. This function 
+ * wakes up all functions waiting on the same wait queue.
+ */
+static void
+megasas_complete_abort(struct megasas_instance *instance,
+		       struct megasas_cmd *cmd)
+{
+	if (cmd->sync_cmd) {
+		cmd->sync_cmd = 0;
+		cmd->cmd_status = 0;
+		wake_up(&instance->abort_cmd_wait_q);
+	}
+
+	return;
+}
+
+/**
+ * megasas_unmap_sgbuf -	Unmap SG buffers
+ * @instance:			Adapter soft state
+ * @cmd:			Completed command
+ */
+static inline void
+megasas_unmap_sgbuf(struct megasas_instance *instance, struct megasas_cmd *cmd)
+{
+	dma_addr_t buf_h;
+	u8 opcode;
+
+	if (cmd->scmd->use_sg) {
+		pci_unmap_sg(instance->pdev, cmd->scmd->request_buffer,
+			     cmd->scmd->use_sg, cmd->scmd->sc_data_direction);
+		return;
+	}
+
+	if (!cmd->scmd->request_bufflen)
+		return;
+
+	opcode = cmd->frame->hdr.cmd;
+
+	if ((opcode == MFI_CMD_LD_READ) || (opcode == MFI_CMD_LD_WRITE)) {
+		if (IS_DMA64)
+			buf_h = cmd->frame->io.sgl.sge64[0].phys_addr;
+		else
+			buf_h = cmd->frame->io.sgl.sge32[0].phys_addr;
+	} else {
+		if (IS_DMA64)
+			buf_h = cmd->frame->pthru.sgl.sge64[0].phys_addr;
+		else
+			buf_h = cmd->frame->pthru.sgl.sge32[0].phys_addr;
+	}
+
+	pci_unmap_single(instance->pdev, buf_h, cmd->scmd->request_bufflen,
+			 cmd->scmd->sc_data_direction);
+	return;
+}
+
+/**
+ * megasas_complete_cmd -	Completes a command
+ * @instance:			Adapter soft state
+ * @cmd:			Command to be completed
+ * @alt_status:			If non-zero, use this value as status to 
+ * 				SCSI mid-layer instead of the value returned
+ * 				by the FW. This should be used if caller wants
+ * 				an alternate status (as in the case of aborted
+ * 				commands)
+ */
+static inline void
+megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
+		     u8 alt_status)
+{
+	int exception = 0;
+	struct megasas_header *hdr = &cmd->frame->hdr;
+	unsigned long flags;
+
+	if (cmd->scmd) {
+		cmd->scmd->SCp.ptr = (char *)0;
+	}
+
+	switch (hdr->cmd) {
+
+	case MFI_CMD_PD_SCSI_IO:
+	case MFI_CMD_LD_SCSI_IO:
+
+		/*
+		 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
+		 * issued either through an IO path or an IOCTL path. If it
+		 * was via IOCTL, we will send it to internal completion.
+		 */
+		if (cmd->sync_cmd) {
+			cmd->sync_cmd = 0;
+			megasas_complete_int_cmd(instance, cmd);
+			break;
+		}
+
+		/*
+		 * Don't export physical disk devices to mid-layer.
+		 */
+		if (!MEGASAS_IS_LOGICAL(cmd->scmd) &&
+		    (hdr->cmd_status == MFI_STAT_OK) &&
+		    (cmd->scmd->cmnd[0] == INQUIRY)) {
+
+			if (((*(u8 *) cmd->scmd->request_buffer) & 0x1F) ==
+			    TYPE_DISK) {
+				cmd->scmd->result = DID_BAD_TARGET << 16;
+				exception = 1;
+			}
+		}
+
+	case MFI_CMD_LD_READ:
+	case MFI_CMD_LD_WRITE:
+
+		if (alt_status) {
+			cmd->scmd->result = alt_status << 16;
+			exception = 1;
+		}
+
+		if (exception) {
+
+			spin_lock_irqsave(&instance->instance_lock, flags);
+			instance->fw_outstanding--;
+			spin_unlock_irqrestore(&instance->instance_lock, flags);
+
+			megasas_unmap_sgbuf(instance, cmd);
+			cmd->scmd->scsi_done(cmd->scmd);
+			megasas_return_cmd(instance, cmd);
+
+			break;
+		}
+
+		switch (hdr->cmd_status) {
+
+		case MFI_STAT_OK:
+			cmd->scmd->result = DID_OK << 16;
+			break;
+
+		case MFI_STAT_SCSI_IO_FAILED:
+		case MFI_STAT_LD_INIT_IN_PROGRESS:
+			cmd->scmd->result =
+			    (DID_ERROR << 16) | hdr->scsi_status;
+			break;
+
+		case MFI_STAT_SCSI_DONE_WITH_ERROR:
+
+			cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
+
+			if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
+				memset(cmd->scmd->sense_buffer, 0,
+				       SCSI_SENSE_BUFFERSIZE);
+				memcpy(cmd->scmd->sense_buffer, cmd->sense,
+				       hdr->sense_len);
+
+				cmd->scmd->result |= DRIVER_SENSE << 24;
+			}
+
+			break;
+
+		case MFI_STAT_LD_OFFLINE:
+		case MFI_STAT_DEVICE_NOT_FOUND:
+			cmd->scmd->result = DID_BAD_TARGET << 16;
+			break;
+
+		default:
+			printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
+			       hdr->cmd_status);
+			cmd->scmd->result = DID_ERROR << 16;
+			break;
+		}
+
+		spin_lock_irqsave(&instance->instance_lock, flags);
+		instance->fw_outstanding--;
+		spin_unlock_irqrestore(&instance->instance_lock, flags);
+
+		megasas_unmap_sgbuf(instance, cmd);
+		cmd->scmd->scsi_done(cmd->scmd);
+		megasas_return_cmd(instance, cmd);
+
+		break;
+
+	case MFI_CMD_SMP:
+	case MFI_CMD_STP:
+	case MFI_CMD_DCMD:
+
+		/*
+		 * See if got an event notification
+		 */
+		if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
+			megasas_service_aen(instance, cmd);
+		else
+			megasas_complete_int_cmd(instance, cmd);
+
+		break;
+
+	case MFI_CMD_ABORT:
+		/*
+		 * Cmd issued to abort another cmd returned
+		 */
+		megasas_complete_abort(instance, cmd);
+		break;
+
+	default:
+		printk("megasas: Unknown command completed! [0x%X]\n",
+		       hdr->cmd);
+		break;
+	}
+}
+
+/**
+ * megasas_deplete_reply_queue -	Processes all completed commands
+ * @instance:				Adapter soft state
+ * @alt_status:				Alternate status to be returned to
+ * 					SCSI mid-layer instead of the status
+ * 					returned by the FW
+ */
+static inline int
+megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)
+{
+	u32 status;
+	u32 producer;
+	u32 consumer;
+	u32 context;
+	struct megasas_cmd *cmd;
+
+	/*
+	 * Check if it is our interrupt
+	 */
+	status = readl(&instance->reg_set->outbound_intr_status);
+
+	if (!(status & MFI_OB_INTR_STATUS_MASK)) {
+		return IRQ_NONE;
+	}
+
+	/*
+	 * Clear the interrupt by writing back the same value
+	 */
+	writel(status, &instance->reg_set->outbound_intr_status);
+
+	producer = *instance->producer;
+	consumer = *instance->consumer;
+
+	while (consumer != producer) {
+		context = instance->reply_queue[consumer];
+
+		cmd = instance->cmd_list[context];
+
+		megasas_complete_cmd(instance, cmd, alt_status);
+
+		consumer++;
+		if (consumer == (instance->max_fw_cmds + 1)) {
+			consumer = 0;
+		}
+	}
+
+	*instance->consumer = producer;
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * megasas_isr - isr entry point
+ */
+static irqreturn_t megasas_isr(int irq, void *devp, struct pt_regs *regs)
+{
+	return megasas_deplete_reply_queue((struct megasas_instance *)devp,
+					   DID_OK);
+}
+
+/**
+ * megasas_transition_to_ready -	Move the FW to READY state
+ * @reg_set:				MFI register set
+ *
+ * During the initialization, FW passes can potentially be in any one of
+ * several possible states. If the FW in operational, waiting-for-handshake
+ * states, driver must take steps to bring it to ready state. Otherwise, it
+ * has to wait for the ready state.
+ */
+static int
+megasas_transition_to_ready(struct megasas_register_set __iomem * reg_set)
+{
+	int i;
+	u8 max_wait;
+	u32 fw_state;
+	u32 cur_state;
+
+	fw_state = readl(&reg_set->outbound_msg_0) & MFI_STATE_MASK;
+
+	while (fw_state != MFI_STATE_READY) {
+
+		printk(KERN_INFO "megasas: Waiting for FW to come to ready"
+		       " state\n");
+		switch (fw_state) {
+
+		case MFI_STATE_FAULT:
+
+			printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
+			return -ENODEV;
+
+		case MFI_STATE_WAIT_HANDSHAKE:
+			/*
+			 * Set the CLR bit in inbound doorbell
+			 */
+			writel(MFI_INIT_CLEAR_HANDSHAKE,
+			       &reg_set->inbound_doorbell);
+
+			max_wait = 2;
+			cur_state = MFI_STATE_WAIT_HANDSHAKE;
+			break;
+
+		case MFI_STATE_OPERATIONAL:
+			/*
+			 * Bring it to READY state; assuming max wait 2 secs
+			 */
+			megasas_disable_intr(reg_set);
+			writel(MFI_INIT_READY, &reg_set->inbound_doorbell);
+
+			max_wait = 10;
+			cur_state = MFI_STATE_OPERATIONAL;
+			break;
+
+		case MFI_STATE_UNDEFINED:
+			/*
+			 * This state should not last for more than 2 seconds
+			 */
+			max_wait = 2;
+			cur_state = MFI_STATE_UNDEFINED;
+			break;
+
+		case MFI_STATE_BB_INIT:
+			max_wait = 2;
+			cur_state = MFI_STATE_BB_INIT;
+			break;
+
+		case MFI_STATE_FW_INIT:
+			max_wait = 20;
+			cur_state = MFI_STATE_FW_INIT;
+			break;
+
+		case MFI_STATE_FW_INIT_2:
+			max_wait = 20;
+			cur_state = MFI_STATE_FW_INIT_2;
+			break;
+
+		case MFI_STATE_DEVICE_SCAN:
+			max_wait = 20;
+			cur_state = MFI_STATE_DEVICE_SCAN;
+			break;
+
+		case MFI_STATE_FLUSH_CACHE:
+			max_wait = 20;
+			cur_state = MFI_STATE_FLUSH_CACHE;
+			break;
+
+		default:
+			printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
+			       fw_state);
+			return -ENODEV;
+		}
+
+		/*
+		 * The cur_state should not last for more than max_wait secs
+		 */
+		for (i = 0; i < (max_wait * 1000); i++) {
+			fw_state = MFI_STATE_MASK &
+			    readl(&reg_set->outbound_msg_0);
+
+			if (fw_state == cur_state) {
+				msleep(1);
+			} else
+				break;
+		}
+
+		/*
+		 * Return error if fw_state hasn't changed after max_wait
+		 */
+		if (fw_state == cur_state) {
+			printk(KERN_DEBUG "FW state [%d] hasn't changed "
+			       "in %d secs\n", fw_state, max_wait);
+			return -ENODEV;
+		}
+	};
+
+	return 0;
+}
+
+/**
+ * megasas_teardown_frame_pool -	Destroy the cmd frame DMA pool
+ * @instance:				Adapter soft state
+ */
+static void megasas_teardown_frame_pool(struct megasas_instance *instance)
+{
+	int i;
+	u32 max_cmd = instance->max_fw_cmds;
+	struct megasas_cmd *cmd;
+
+	if (!instance->frame_dma_pool)
+		return;
+
+	/*
+	 * Return all frames to pool
+	 */
+	for (i = 0; i < max_cmd; i++) {
+
+		cmd = instance->cmd_list[i];
+
+		if (cmd->frame)
+			pci_pool_free(instance->frame_dma_pool, cmd->frame,
+				      cmd->frame_phys_addr);
+
+		if (cmd->sense)
+			pci_pool_free(instance->sense_dma_pool, cmd->frame,
+				      cmd->sense_phys_addr);
+	}
+
+	/*
+	 * Now destroy the pool itself
+	 */
+	pci_pool_destroy(instance->frame_dma_pool);
+	pci_pool_destroy(instance->sense_dma_pool);
+
+	instance->frame_dma_pool = NULL;
+	instance->sense_dma_pool = NULL;
+}
+
+/**
+ * megasas_create_frame_pool -	Creates DMA pool for cmd frames
+ * @instance:			Adapter soft state
+ *
+ * Each command packet has an embedded DMA memory buffer that is used for
+ * filling MFI frame and the SG list that immediately follows the frame. This
+ * function creates those DMA memory buffers for each command packet by using
+ * PCI pool facility.
+ */
+static int megasas_create_frame_pool(struct megasas_instance *instance)
+{
+	int i;
+	u32 max_cmd;
+	u32 sge_sz;
+	u32 sgl_sz;
+	u32 total_sz;
+	u32 frame_count;
+	struct megasas_cmd *cmd;
+
+	max_cmd = instance->max_fw_cmds;
+
+	/*
+	 * Size of our frame is 64 bytes for MFI frame, followed by max SG
+	 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
+	 */
+	sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
+	    sizeof(struct megasas_sge32);
+
+	/*
+	 * Calculated the number of 64byte frames required for SGL
+	 */
+	sgl_sz = sge_sz * instance->max_num_sge;
+	frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
+
+	/*
+	 * We need one extra frame for the MFI command
+	 */
+	frame_count++;
+
+	total_sz = MEGAMFI_FRAME_SIZE * frame_count;
+	/*
+	 * Use DMA pool facility provided by PCI layer
+	 */
+	instance->frame_dma_pool = pci_pool_create("megasas frame pool",
+						   instance->pdev, total_sz, 64,
+						   0);
+
+	if (!instance->frame_dma_pool) {
+		printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
+		return -ENOMEM;
+	}
+
+	instance->sense_dma_pool = pci_pool_create("megasas sense pool",
+						   instance->pdev, 128, 4, 0);
+
+	if (!instance->sense_dma_pool) {
+		printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
+
+		pci_pool_destroy(instance->frame_dma_pool);
+		instance->frame_dma_pool = NULL;
+
+		return -ENOMEM;
+	}
+
+	/*
+	 * Allocate and attach a frame to each of the commands in cmd_list.
+	 * By making cmd->index as the context instead of the &cmd, we can
+	 * always use 32bit context regardless of the architecture
+	 */
+	for (i = 0; i < max_cmd; i++) {
+
+		cmd = instance->cmd_list[i];
+
+		cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
+					    GFP_KERNEL, &cmd->frame_phys_addr);
+
+		cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
+					    GFP_KERNEL, &cmd->sense_phys_addr);
+
+		/*
+		 * megasas_teardown_frame_pool() takes care of freeing
+		 * whatever has been allocated
+		 */
+		if (!cmd->frame || !cmd->sense) {
+			printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
+			megasas_teardown_frame_pool(instance);
+			return -ENOMEM;
+		}
+
+		cmd->frame->io.context = cmd->index;
+	}
+
+	return 0;
+}
+
+/**
+ * megasas_free_cmds -	Free all the cmds in the free cmd pool
+ * @instance:		Adapter soft state
+ */
+static void megasas_free_cmds(struct megasas_instance *instance)
+{
+	int i;
+	/* First free the MFI frame pool */
+	megasas_teardown_frame_pool(instance);
+
+	/* Free all the commands in the cmd_list */
+	for (i = 0; i < instance->max_fw_cmds; i++)
+		kfree(instance->cmd_list[i]);
+
+	/* Free the cmd_list buffer itself */
+	kfree(instance->cmd_list);
+	instance->cmd_list = NULL;
+
+	INIT_LIST_HEAD(&instance->cmd_pool);
+}
+
+/**
+ * megasas_alloc_cmds -	Allocates the command packets
+ * @instance:		Adapter soft state
+ *
+ * Each command that is issued to the FW, whether IO commands from the OS or
+ * internal commands like IOCTLs, are wrapped in local data structure called
+ * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
+ * the FW.
+ *
+ * Each frame has a 32-bit field called context (tag). This context is used
+ * to get back the megasas_cmd from the frame when a frame gets completed in
+ * the ISR. Typically the address of the megasas_cmd itself would be used as
+ * the context. But we wanted to keep the differences between 32 and 64 bit
+ * systems to the mininum. We always use 32 bit integers for the context. In
+ * this driver, the 32 bit values are the indices into an array cmd_list.
+ * This array is used only to look up the megasas_cmd given the context. The
+ * free commands themselves are maintained in a linked list called cmd_pool.
+ */
+static int megasas_alloc_cmds(struct megasas_instance *instance)
+{
+	int i;
+	int j;
+	u32 max_cmd;
+	struct megasas_cmd *cmd;
+
+	max_cmd = instance->max_fw_cmds;
+
+	/*
+	 * instance->cmd_list is an array of struct megasas_cmd pointers.
+	 * Allocate the dynamic array first and then allocate individual
+	 * commands.
+	 */
+	instance->cmd_list = kmalloc(sizeof(struct megasas_cmd *) * max_cmd,
+				     GFP_KERNEL);
+
+	if (!instance->cmd_list) {
+		printk(KERN_DEBUG "megasas: out of memory\n");
+		return -ENOMEM;
+	}
+
+	memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) * max_cmd);
+
+	for (i = 0; i < max_cmd; i++) {
+		instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
+						GFP_KERNEL);
+
+		if (!instance->cmd_list[i]) {
+
+			for (j = 0; j < i; j++)
+				kfree(instance->cmd_list[j]);
+
+			kfree(instance->cmd_list);
+			instance->cmd_list = NULL;
+
+			return -ENOMEM;
+		}
+	}
+
+	/*
+	 * Add all the commands to command pool (instance->cmd_pool)
+	 */
+	for (i = 0; i < max_cmd; i++) {
+		cmd = instance->cmd_list[i];
+		memset(cmd, 0, sizeof(struct megasas_cmd));
+		cmd->index = i;
+		cmd->instance = instance;
+
+		list_add_tail(&cmd->list, &instance->cmd_pool);
+	}
+
+	/*
+	 * Create a frame pool and assign one frame to each cmd
+	 */
+	if (megasas_create_frame_pool(instance)) {
+		printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
+		megasas_free_cmds(instance);
+	}
+
+	return 0;
+}
+
+/**
+ * megasas_get_controller_info -	Returns FW's controller structure
+ * @instance:				Adapter soft state
+ * @ctrl_info:				Controller information structure
+ *
+ * Issues an internal command (DCMD) to get the FW's controller structure.
+ * This information is mainly used to find out the maximum IO transfer per
+ * command supported by the FW.
+ */
+static int
+megasas_get_ctrl_info(struct megasas_instance *instance,
+		      struct megasas_ctrl_info *ctrl_info)
+{
+	int ret = 0;
+	struct megasas_cmd *cmd;
+	struct megasas_dcmd_frame *dcmd;
+	struct megasas_ctrl_info *ci;
+	dma_addr_t ci_h = 0;
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd) {
+		printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
+		return -ENOMEM;
+	}
+
+	dcmd = &cmd->frame->dcmd;
+
+	ci = pci_alloc_consistent(instance->pdev,
+				  sizeof(struct megasas_ctrl_info), &ci_h);
+
+	if (!ci) {
+		printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
+		megasas_return_cmd(instance, cmd);
+		return -ENOMEM;
+	}
+
+	memset(ci, 0, sizeof(*ci));
+	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	dcmd->cmd = MFI_CMD_DCMD;
+	dcmd->cmd_status = 0xFF;
+	dcmd->sge_count = 1;
+	dcmd->flags = MFI_FRAME_DIR_READ;
+	dcmd->timeout = 0;
+	dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
+	dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
+	dcmd->sgl.sge32[0].phys_addr = ci_h;
+	dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
+
+	if (!megasas_issue_polled(instance, cmd)) {
+		ret = 0;
+		memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
+	} else {
+		ret = -1;
+	}
+
+	pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
+			    ci, ci_h);
+
+	megasas_return_cmd(instance, cmd);
+	return ret;
+}
+
+/**
+ * megasas_init_mfi -	Initializes the FW
+ * @instance:		Adapter soft state
+ *
+ * This is the main function for initializing MFI firmware.
+ */
+static int megasas_init_mfi(struct megasas_instance *instance)
+{
+	u32 context_sz;
+	u32 reply_q_sz;
+	u32 max_sectors_1;
+	u32 max_sectors_2;
+	struct megasas_register_set __iomem *reg_set;
+
+	struct megasas_cmd *cmd;
+	struct megasas_ctrl_info *ctrl_info;
+
+	struct megasas_init_frame *init_frame;
+	struct megasas_init_queue_info *initq_info;
+	dma_addr_t init_frame_h;
+	dma_addr_t initq_info_h;
+
+	/*
+	 * Map the message registers
+	 */
+	instance->base_addr = pci_resource_start(instance->pdev, 0);
+
+	if (pci_request_regions(instance->pdev, "megasas: LSI Logic")) {
+		printk(KERN_DEBUG "megasas: IO memory region busy!\n");
+		return -EBUSY;
+	}
+
+	instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
+
+	if (!instance->reg_set) {
+		printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
+		goto fail_ioremap;
+	}
+
+	reg_set = instance->reg_set;
+
+	/*
+	 * We expect the FW state to be READY
+	 */
+	if (megasas_transition_to_ready(instance->reg_set))
+		goto fail_ready_state;
+
+	/*
+	 * Get various operational parameters from status register
+	 */
+	instance->max_fw_cmds = readl(&reg_set->outbound_msg_0) & 0x00FFFF;
+	instance->max_num_sge = (readl(&reg_set->outbound_msg_0) & 0xFF0000) >>
+	    0x10;
+	/*
+	 * Create a pool of commands
+	 */
+	if (megasas_alloc_cmds(instance))
+		goto fail_alloc_cmds;
+
+	/*
+	 * Allocate memory for reply queue. Length of reply queue should
+	 * be _one_ more than the maximum commands handled by the firmware.
+	 *
+	 * Note: When FW completes commands, it places corresponding contex
+	 * values in this circular reply queue. This circular queue is a fairly
+	 * typical producer-consumer queue. FW is the producer (of completed
+	 * commands) and the driver is the consumer.
+	 */
+	context_sz = sizeof(u32);
+	reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
+
+	instance->reply_queue = pci_alloc_consistent(instance->pdev,
+						     reply_q_sz,
+						     &instance->reply_queue_h);
+
+	if (!instance->reply_queue) {
+		printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
+		goto fail_reply_queue;
+	}
+
+	/*
+	 * Prepare a init frame. Note the init frame points to queue info
+	 * structure. Each frame has SGL allocated after first 64 bytes. For
+	 * this frame - since we don't need any SGL - we use SGL's space as
+	 * queue info structure
+	 *
+	 * We will not get a NULL command below. We just created the pool.
+	 */
+	cmd = megasas_get_cmd(instance);
+
+	init_frame = (struct megasas_init_frame *)cmd->frame;
+	initq_info = (struct megasas_init_queue_info *)
+	    ((unsigned long)init_frame + 64);
+
+	init_frame_h = cmd->frame_phys_addr;
+	initq_info_h = init_frame_h + 64;
+
+	memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
+	memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
+
+	initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
+	initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
+
+	initq_info->producer_index_phys_addr_lo = instance->producer_h;
+	initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
+
+	init_frame->cmd = MFI_CMD_INIT;
+	init_frame->cmd_status = 0xFF;
+	init_frame->queue_info_new_phys_addr_lo = initq_info_h;
+
+	init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
+
+	/*
+	 * Issue the init frame in polled mode
+	 */
+	if (megasas_issue_polled(instance, cmd)) {
+		printk(KERN_DEBUG "megasas: Failed to init firmware\n");
+		goto fail_fw_init;
+	}
+
+	megasas_return_cmd(instance, cmd);
+
+	ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
+
+	/*
+	 * Compute the max allowed sectors per IO: The controller info has two
+	 * limits on max sectors. Driver should use the minimum of these two.
+	 *
+	 * 1 << stripe_sz_ops.min = max sectors per strip
+	 *
+	 * Note that older firmwares ( < FW ver 30) didn't report information
+	 * to calculate max_sectors_1. So the number ended up as zero always.
+	 */
+	if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
+
+		max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
+		    ctrl_info->max_strips_per_io;
+		max_sectors_2 = ctrl_info->max_request_size;
+
+		instance->max_sectors_per_req = (max_sectors_1 < max_sectors_2)
+		    ? max_sectors_1 : max_sectors_2;
+	} else
+		instance->max_sectors_per_req = instance->max_num_sge *
+		    PAGE_SIZE / 512;
+
+	kfree(ctrl_info);
+
+	return 0;
+
+      fail_fw_init:
+	megasas_return_cmd(instance, cmd);
+
+	pci_free_consistent(instance->pdev, reply_q_sz,
+			    instance->reply_queue, instance->reply_queue_h);
+      fail_reply_queue:
+	megasas_free_cmds(instance);
+
+      fail_alloc_cmds:
+      fail_ready_state:
+	iounmap(instance->reg_set);
+
+      fail_ioremap:
+	pci_release_regions(instance->pdev);
+
+	return -EINVAL;
+}
+
+/**
+ * megasas_release_mfi -	Reverses the FW initialization
+ * @intance:			Adapter soft state
+ */
+static void megasas_release_mfi(struct megasas_instance *instance)
+{
+	u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1);
+
+	pci_free_consistent(instance->pdev, reply_q_sz,
+			    instance->reply_queue, instance->reply_queue_h);
+
+	megasas_free_cmds(instance);
+
+	iounmap(instance->reg_set);
+
+	pci_release_regions(instance->pdev);
+}
+
+/**
+ * megasas_get_seq_num -	Gets latest event sequence numbers
+ * @instance:			Adapter soft state
+ * @eli:			FW event log sequence numbers information
+ *
+ * FW maintains a log of all events in a non-volatile area. Upper layers would
+ * usually find out the latest sequence number of the events, the seq number at
+ * the boot etc. They would "read" all the events below the latest seq number
+ * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
+ * number), they would subsribe to AEN (asynchronous event notification) and
+ * wait for the events to happen.
+ */
+static int
+megasas_get_seq_num(struct megasas_instance *instance,
+		    struct megasas_evt_log_info *eli)
+{
+	struct megasas_cmd *cmd;
+	struct megasas_dcmd_frame *dcmd;
+	struct megasas_evt_log_info *el_info;
+	dma_addr_t el_info_h = 0;
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd) {
+		return -ENOMEM;
+	}
+
+	dcmd = &cmd->frame->dcmd;
+	el_info = pci_alloc_consistent(instance->pdev,
+				       sizeof(struct megasas_evt_log_info),
+				       &el_info_h);
+
+	if (!el_info) {
+		megasas_return_cmd(instance, cmd);
+		return -ENOMEM;
+	}
+
+	memset(el_info, 0, sizeof(*el_info));
+	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	dcmd->cmd = MFI_CMD_DCMD;
+	dcmd->cmd_status = 0x0;
+	dcmd->sge_count = 1;
+	dcmd->flags = MFI_FRAME_DIR_READ;
+	dcmd->timeout = 0;
+	dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
+	dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
+	dcmd->sgl.sge32[0].phys_addr = el_info_h;
+	dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
+
+	megasas_issue_blocked_cmd(instance, cmd);
+
+	/*
+	 * Copy the data back into callers buffer
+	 */
+	memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
+
+	pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
+			    el_info, el_info_h);
+
+	megasas_return_cmd(instance, cmd);
+
+	return 0;
+}
+
+/**
+ * megasas_register_aen -	Registers for asynchronous event notification
+ * @instance:			Adapter soft state
+ * @seq_num:			The starting sequence number
+ * @class_locale:		Class of the event
+ *
+ * This function subscribes for AEN for events beyond the @seq_num. It requests
+ * to be notified if and only if the event is of type @class_locale
+ */
+static int
+megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
+		     u32 class_locale_word)
+{
+	int ret_val;
+	struct megasas_cmd *cmd;
+	struct megasas_dcmd_frame *dcmd;
+	union megasas_evt_class_locale curr_aen;
+	union megasas_evt_class_locale prev_aen;
+
+	/*
+	 * If there an AEN pending already (aen_cmd), check if the
+	 * class_locale of that pending AEN is inclusive of the new
+	 * AEN request we currently have. If it is, then we don't have
+	 * to do anything. In other words, whichever events the current
+	 * AEN request is subscribing to, have already been subscribed
+	 * to.
+	 *
+	 * If the old_cmd is _not_ inclusive, then we have to abort
+	 * that command, form a class_locale that is superset of both
+	 * old and current and re-issue to the FW
+	 */
+
+	curr_aen.word = class_locale_word;
+
+	if (instance->aen_cmd) {
+
+		prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
+
+		/*
+		 * A class whose enum value is smaller is inclusive of all
+		 * higher values. If a PROGRESS (= -1) was previously
+		 * registered, then a new registration requests for higher
+		 * classes need not be sent to FW. They are automatically
+		 * included.
+		 *
+		 * Locale numbers don't have such hierarchy. They are bitmap
+		 * values
+		 */
+		if ((prev_aen.members.class <= curr_aen.members.class) &&
+		    !((prev_aen.members.locale & curr_aen.members.locale) ^
+		      curr_aen.members.locale)) {
+			/*
+			 * Previously issued event registration includes
+			 * current request. Nothing to do.
+			 */
+			return 0;
+		} else {
+			curr_aen.members.locale |= prev_aen.members.locale;
+
+			if (prev_aen.members.class < curr_aen.members.class)
+				curr_aen.members.class = prev_aen.members.class;
+
+			instance->aen_cmd->abort_aen = 1;
+			ret_val = megasas_issue_blocked_abort_cmd(instance,
+								  instance->
+								  aen_cmd);
+
+			if (ret_val) {
+				printk(KERN_DEBUG "megasas: Failed to abort "
+				       "previous AEN command\n");
+				return ret_val;
+			}
+		}
+	}
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd)
+		return -ENOMEM;
+
+	dcmd = &cmd->frame->dcmd;
+
+	memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
+
+	/*
+	 * Prepare DCMD for aen registration
+	 */
+	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	dcmd->cmd = MFI_CMD_DCMD;
+	dcmd->cmd_status = 0x0;
+	dcmd->sge_count = 1;
+	dcmd->flags = MFI_FRAME_DIR_READ;
+	dcmd->timeout = 0;
+	dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
+	dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
+	dcmd->mbox.w[0] = seq_num;
+	dcmd->mbox.w[1] = curr_aen.word;
+	dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
+	dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
+
+	/*
+	 * Store reference to the cmd used to register for AEN. When an
+	 * application wants us to register for AEN, we have to abort this
+	 * cmd and re-register with a new EVENT LOCALE supplied by that app
+	 */
+	instance->aen_cmd = cmd;
+
+	/*
+	 * Issue the aen registration frame
+	 */
+	writel(cmd->frame_phys_addr >> 3,
+	       &instance->reg_set->inbound_queue_port);
+
+	return 0;
+}
+
+/**
+ * megasas_start_aen -	Subscribes to AEN during driver load time
+ * @instance:		Adapter soft state
+ */
+static int megasas_start_aen(struct megasas_instance *instance)
+{
+	struct megasas_evt_log_info eli;
+	union megasas_evt_class_locale class_locale;
+
+	/*
+	 * Get the latest sequence number from FW
+	 */
+	memset(&eli, 0, sizeof(eli));
+
+	if (megasas_get_seq_num(instance, &eli))
+		return -1;
+
+	/*
+	 * Register AEN with FW for latest sequence number plus 1
+	 */
+	class_locale.members.reserved = 0;
+	class_locale.members.locale = MR_EVT_LOCALE_ALL;
+	class_locale.members.class = MR_EVT_CLASS_DEBUG;
+
+	return megasas_register_aen(instance, eli.newest_seq_num + 1,
+				    class_locale.word);
+}
+
+/**
+ * megasas_io_attach -	Attaches this driver to SCSI mid-layer
+ * @instance:		Adapter soft state
+ */
+static int megasas_io_attach(struct megasas_instance *instance)
+{
+	struct Scsi_Host *host = instance->host;
+
+	/*
+	 * Export parameters required by SCSI mid-layer
+	 */
+	host->irq = instance->pdev->irq;
+	host->unique_id = instance->unique_id;
+	host->can_queue = instance->max_fw_cmds - MEGASAS_INT_CMDS;
+	host->this_id = instance->init_id;
+	host->sg_tablesize = instance->max_num_sge;
+	host->max_sectors = instance->max_sectors_per_req;
+	host->cmd_per_lun = 128;
+	host->max_channel = MEGASAS_MAX_CHANNELS - 1;
+	host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
+	host->max_lun = MEGASAS_MAX_LUN;
+
+	/*
+	 * Notify the mid-layer about the new controller
+	 */
+	if (scsi_add_host(host, &instance->pdev->dev)) {
+		printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
+		return -ENODEV;
+	}
+
+	/*
+	 * Trigger SCSI to scan our drives
+	 */
+	scsi_scan_host(host);
+	return 0;
+}
+
+/**
+ * megasas_probe_one -	PCI hotplug entry point
+ * @pdev:		PCI device structure
+ * @id:			PCI ids of supported hotplugged adapter	
+ */
+static int __devinit
+megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	int rval;
+	struct Scsi_Host *host;
+	struct megasas_instance *instance;
+
+	/*
+	 * Announce PCI information
+	 */
+	printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
+	       pdev->vendor, pdev->device, pdev->subsystem_vendor,
+	       pdev->subsystem_device);
+
+	printk("bus %d:slot %d:func %d\n",
+	       pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
+
+	/*
+	 * PCI prepping: enable device set bus mastering and dma mask
+	 */
+	rval = pci_enable_device(pdev);
+
+	if (rval) {
+		return rval;
+	}
+
+	pci_set_master(pdev);
+
+	/*
+	 * All our contollers are capable of performing 64-bit DMA
+	 */
+	if (IS_DMA64) {
+		if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) != 0) {
+
+			if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+				goto fail_set_dma_mask;
+		}
+	} else {
+		if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0)
+			goto fail_set_dma_mask;
+	}
+
+	host = scsi_host_alloc(&megasas_template,
+			       sizeof(struct megasas_instance));
+
+	if (!host) {
+		printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
+		goto fail_alloc_instance;
+	}
+
+	instance = (struct megasas_instance *)host->hostdata;
+	memset(instance, 0, sizeof(*instance));
+
+	instance->producer = pci_alloc_consistent(pdev, sizeof(u32),
+						  &instance->producer_h);
+	instance->consumer = pci_alloc_consistent(pdev, sizeof(u32),
+						  &instance->consumer_h);
+
+	if (!instance->producer || !instance->consumer) {
+		printk(KERN_DEBUG "megasas: Failed to allocate memory for "
+		       "producer, consumer\n");
+		goto fail_alloc_dma_buf;
+	}
+
+	*instance->producer = 0;
+	*instance->consumer = 0;
+
+	instance->evt_detail = pci_alloc_consistent(pdev,
+						    sizeof(struct
+							   megasas_evt_detail),
+						    &instance->evt_detail_h);
+
+	if (!instance->evt_detail) {
+		printk(KERN_DEBUG "megasas: Failed to allocate memory for "
+		       "event detail structure\n");
+		goto fail_alloc_dma_buf;
+	}
+
+	/*
+	 * Initialize locks and queues
+	 */
+	INIT_LIST_HEAD(&instance->cmd_pool);
+
+	init_waitqueue_head(&instance->int_cmd_wait_q);
+	init_waitqueue_head(&instance->abort_cmd_wait_q);
+
+	spin_lock_init(&instance->cmd_pool_lock);
+	spin_lock_init(&instance->instance_lock);
+
+	sema_init(&instance->aen_mutex, 1);
+	sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
+
+	/*
+	 * Initialize PCI related and misc parameters
+	 */
+	instance->pdev = pdev;
+	instance->host = host;
+	instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
+	instance->init_id = MEGASAS_DEFAULT_INIT_ID;
+
+	/*
+	 * Initialize MFI Firmware
+	 */
+	if (megasas_init_mfi(instance))
+		goto fail_init_mfi;
+
+	/*
+	 * Register IRQ
+	 */
+	if (request_irq(pdev->irq, megasas_isr, SA_SHIRQ, "megasas", instance)) {
+		printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
+		goto fail_irq;
+	}
+
+	megasas_enable_intr(instance->reg_set);
+
+	/*
+	 * Store instance in PCI softstate
+	 */
+	pci_set_drvdata(pdev, instance);
+
+	/*
+	 * Add this controller to megasas_mgmt_info structure so that it
+	 * can be exported to management applications
+	 */
+	megasas_mgmt_info.count++;
+	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
+	megasas_mgmt_info.max_index++;
+
+	/*
+	 * Initiate AEN (Asynchronous Event Notification)
+	 */
+	if (megasas_start_aen(instance)) {
+		printk(KERN_DEBUG "megasas: start aen failed\n");
+		goto fail_start_aen;
+	}
+
+	/*
+	 * Register with SCSI mid-layer
+	 */
+	if (megasas_io_attach(instance))
+		goto fail_io_attach;
+
+	return 0;
+
+      fail_start_aen:
+      fail_io_attach:
+	megasas_mgmt_info.count--;
+	megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
+	megasas_mgmt_info.max_index--;
+
+	pci_set_drvdata(pdev, NULL);
+	megasas_disable_intr(instance->reg_set);
+	free_irq(instance->pdev->irq, instance);
+
+	megasas_release_mfi(instance);
+
+      fail_irq:
+      fail_init_mfi:
+      fail_alloc_dma_buf:
+	if (instance->evt_detail)
+		pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
+				    instance->evt_detail,
+				    instance->evt_detail_h);
+
+	if (instance->producer)
+		pci_free_consistent(pdev, sizeof(u32), instance->producer,
+				    instance->producer_h);
+	if (instance->consumer)
+		pci_free_consistent(pdev, sizeof(u32), instance->consumer,
+				    instance->consumer_h);
+	scsi_host_put(host);
+
+      fail_alloc_instance:
+      fail_set_dma_mask:
+	pci_disable_device(pdev);
+
+	return -ENODEV;
+}
+
+/**
+ * megasas_flush_cache -	Requests FW to flush all its caches
+ * @instance:			Adapter soft state
+ */
+static void megasas_flush_cache(struct megasas_instance *instance)
+{
+	struct megasas_cmd *cmd;
+	struct megasas_dcmd_frame *dcmd;
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd)
+		return;
+
+	dcmd = &cmd->frame->dcmd;
+
+	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	dcmd->cmd = MFI_CMD_DCMD;
+	dcmd->cmd_status = 0x0;
+	dcmd->sge_count = 0;
+	dcmd->flags = MFI_FRAME_DIR_NONE;
+	dcmd->timeout = 0;
+	dcmd->data_xfer_len = 0;
+	dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
+	dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
+
+	megasas_issue_blocked_cmd(instance, cmd);
+
+	megasas_return_cmd(instance, cmd);
+
+	return;
+}
+
+/**
+ * megasas_shutdown_controller -	Instructs FW to shutdown the controller
+ * @instance:				Adapter soft state
+ */
+static void megasas_shutdown_controller(struct megasas_instance *instance)
+{
+	struct megasas_cmd *cmd;
+	struct megasas_dcmd_frame *dcmd;
+
+	cmd = megasas_get_cmd(instance);
+
+	if (!cmd)
+		return;
+
+	if (instance->aen_cmd)
+		megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
+
+	dcmd = &cmd->frame->dcmd;
+
+	memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+	dcmd->cmd = MFI_CMD_DCMD;
+	dcmd->cmd_status = 0x0;
+	dcmd->sge_count = 0;
+	dcmd->flags = MFI_FRAME_DIR_NONE;
+	dcmd->timeout = 0;
+	dcmd->data_xfer_len = 0;
+	dcmd->opcode = MR_DCMD_CTRL_SHUTDOWN;
+
+	megasas_issue_blocked_cmd(instance, cmd);
+
+	megasas_return_cmd(instance, cmd);
+
+	return;
+}
+
+/**
+ * megasas_detach_one -	PCI hot"un"plug entry point
+ * @pdev:		PCI device structure
+ */
+static void megasas_detach_one(struct pci_dev *pdev)
+{
+	int i;
+	struct Scsi_Host *host;
+	struct megasas_instance *instance;
+
+	instance = pci_get_drvdata(pdev);
+	host = instance->host;
+
+	scsi_remove_host(instance->host);
+	megasas_flush_cache(instance);
+	megasas_shutdown_controller(instance);
+
+	/*
+	 * Take the instance off the instance array. Note that we will not
+	 * decrement the max_index. We let this array be sparse array
+	 */
+	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+		if (megasas_mgmt_info.instance[i] == instance) {
+			megasas_mgmt_info.count--;
+			megasas_mgmt_info.instance[i] = NULL;
+
+			break;
+		}
+	}
+
+	pci_set_drvdata(instance->pdev, NULL);
+
+	megasas_disable_intr(instance->reg_set);
+
+	free_irq(instance->pdev->irq, instance);
+
+	megasas_release_mfi(instance);
+
+	pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
+			    instance->evt_detail, instance->evt_detail_h);
+
+	pci_free_consistent(pdev, sizeof(u32), instance->producer,
+			    instance->producer_h);
+
+	pci_free_consistent(pdev, sizeof(u32), instance->consumer,
+			    instance->consumer_h);
+
+	scsi_host_put(host);
+
+	pci_set_drvdata(pdev, NULL);
+
+	pci_disable_device(pdev);
+
+	return;
+}
+
+/**
+ * megasas_shutdown -	Shutdown entry point
+ * @device:		Generic device structure
+ */
+static void megasas_shutdown(struct pci_dev *pdev)
+{
+	struct megasas_instance *instance = pci_get_drvdata(pdev);
+	megasas_flush_cache(instance);
+}
+
+/**
+ * megasas_mgmt_open -	char node "open" entry point
+ */
+static int megasas_mgmt_open(struct inode *inode, struct file *filep)
+{
+	/*
+	 * Allow only those users with admin rights
+	 */
+	if (!capable(CAP_SYS_ADMIN))
+		return -EACCES;
+
+	return 0;
+}
+
+/**
+ * megasas_mgmt_release - char node "release" entry point
+ */
+static int megasas_mgmt_release(struct inode *inode, struct file *filep)
+{
+	filep->private_data = NULL;
+	fasync_helper(-1, filep, 0, &megasas_async_queue);
+
+	return 0;
+}
+
+/**
+ * megasas_mgmt_fasync -	Async notifier registration from applications
+ *
+ * This function adds the calling process to a driver global queue. When an
+ * event occurs, SIGIO will be sent to all processes in this queue.
+ */
+static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
+{
+	int rc;
+
+	down(&megasas_async_queue_mutex);
+
+	rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
+
+	up(&megasas_async_queue_mutex);
+
+	if (rc >= 0) {
+		/* For sanity check when we get ioctl */
+		filep->private_data = filep;
+		return 0;
+	}
+
+	printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
+
+	return rc;
+}
+
+/**
+ * megasas_mgmt_fw_ioctl -	Issues management ioctls to FW
+ * @instance:			Adapter soft state
+ * @argp:			User's ioctl packet
+ */
+static int
+megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
+		      struct megasas_iocpacket __user * user_ioc,
+		      struct megasas_iocpacket *ioc)
+{
+	struct megasas_sge32 *kern_sge32;
+	struct megasas_cmd *cmd;
+	void *kbuff_arr[MAX_IOCTL_SGE];
+	dma_addr_t buf_handle = 0;
+	int error = 0, i;
+	void *sense = NULL;
+	dma_addr_t sense_handle;
+	u32 *sense_ptr;
+
+	memset(kbuff_arr, 0, sizeof(kbuff_arr));
+
+	if (ioc->sge_count > MAX_IOCTL_SGE) {
+		printk(KERN_DEBUG "megasas: SGE count [%d] >  max limit [%d]\n",
+		       ioc->sge_count, MAX_IOCTL_SGE);
+		return -EINVAL;
+	}
+
+	cmd = megasas_get_cmd(instance);
+	if (!cmd) {
+		printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
+		return -ENOMEM;
+	}
+
+	/*
+	 * User's IOCTL packet has 2 frames (maximum). Copy those two
+	 * frames into our cmd's frames. cmd->frame's context will get
+	 * overwritten when we copy from user's frames. So set that value
+	 * alone separately
+	 */
+	memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
+	cmd->frame->hdr.context = cmd->index;
+
+	/*
+	 * The management interface between applications and the fw uses
+	 * MFI frames. E.g, RAID configuration changes, LD property changes
+	 * etc are accomplishes through different kinds of MFI frames. The
+	 * driver needs to care only about substituting user buffers with
+	 * kernel buffers in SGLs. The location of SGL is embedded in the
+	 * struct iocpacket itself.
+	 */
+	kern_sge32 = (struct megasas_sge32 *)
+	    ((unsigned long)cmd->frame + ioc->sgl_off);
+
+	/*
+	 * For each user buffer, create a mirror buffer and copy in
+	 */
+	for (i = 0; i < ioc->sge_count; i++) {
+		kbuff_arr[i] = pci_alloc_consistent(instance->pdev,
+						    ioc->sgl[i].iov_len,
+						    &buf_handle);
+		if (!kbuff_arr[i]) {
+			printk(KERN_DEBUG "megasas: Failed to alloc "
+			       "kernel SGL buffer for IOCTL \n");
+			error = -ENOMEM;
+			goto out;
+		}
+
+		/*
+		 * We don't change the dma_coherent_mask, so
+		 * pci_alloc_consistent only returns 32bit addresses
+		 */
+		kern_sge32[i].phys_addr = (u32) buf_handle;
+		kern_sge32[i].length = ioc->sgl[i].iov_len;
+
+		/*
+		 * We created a kernel buffer corresponding to the
+		 * user buffer. Now copy in from the user buffer
+		 */
+		if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
+				   (u32) (ioc->sgl[i].iov_len))) {
+			error = -EFAULT;
+			goto out;
+		}
+	}
+
+	if (ioc->sense_len) {
+		sense = pci_alloc_consistent(instance->pdev, ioc->sense_len,
+					     &sense_handle);
+		if (!sense) {
+			error = -ENOMEM;
+			goto out;
+		}
+
+		sense_ptr =
+		    (u32 *) ((unsigned long)cmd->frame + ioc->sense_off);
+		*sense_ptr = sense_handle;
+	}
+
+	/*
+	 * Set the sync_cmd flag so that the ISR knows not to complete this
+	 * cmd to the SCSI mid-layer
+	 */
+	cmd->sync_cmd = 1;
+	megasas_issue_blocked_cmd(instance, cmd);
+	cmd->sync_cmd = 0;
+
+	/*
+	 * copy out the kernel buffers to user buffers
+	 */
+	for (i = 0; i < ioc->sge_count; i++) {
+		if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
+				 ioc->sgl[i].iov_len)) {
+			error = -EFAULT;
+			goto out;
+		}
+	}
+
+	/*
+	 * copy out the sense
+	 */
+	if (ioc->sense_len) {
+		/*
+		 * sense_ptr points to the location that has the user
+		 * sense buffer address
+		 */
+		sense_ptr = (u32 *) ((unsigned long)ioc->frame.raw +
+				     ioc->sense_off);
+
+		if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
+				 sense, ioc->sense_len)) {
+			error = -EFAULT;
+			goto out;
+		}
+	}
+
+	/*
+	 * copy the status codes returned by the fw
+	 */
+	if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
+			 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
+		printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
+		error = -EFAULT;
+	}
+
+      out:
+	if (sense) {
+		pci_free_consistent(instance->pdev, ioc->sense_len,
+				    sense, sense_handle);
+	}
+
+	for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
+		pci_free_consistent(instance->pdev,
+				    kern_sge32[i].length,
+				    kbuff_arr[i], kern_sge32[i].phys_addr);
+	}
+
+	megasas_return_cmd(instance, cmd);
+	return error;
+}
+
+static struct megasas_instance *megasas_lookup_instance(u16 host_no)
+{
+	int i;
+
+	for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+
+		if ((megasas_mgmt_info.instance[i]) &&
+		    (megasas_mgmt_info.instance[i]->host->host_no == host_no))
+			return megasas_mgmt_info.instance[i];
+	}
+
+	return NULL;
+}
+
+static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
+{
+	struct megasas_iocpacket __user *user_ioc =
+	    (struct megasas_iocpacket __user *)arg;
+	struct megasas_iocpacket *ioc;
+	struct megasas_instance *instance;
+	int error;
+
+	ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
+	if (!ioc)
+		return -ENOMEM;
+
+	if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
+		error = -EFAULT;
+		goto out_kfree_ioc;
+	}
+
+	instance = megasas_lookup_instance(ioc->host_no);
+	if (!instance) {
+		error = -ENODEV;
+		goto out_kfree_ioc;
+	}
+
+	/*
+	 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
+	 */
+	if (down_interruptible(&instance->ioctl_sem)) {
+		error = -ERESTARTSYS;
+		goto out_kfree_ioc;
+	}
+	error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
+	up(&instance->ioctl_sem);
+
+      out_kfree_ioc:
+	kfree(ioc);
+	return error;
+}
+
+static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
+{
+	struct megasas_instance *instance;
+	struct megasas_aen aen;
+	int error;
+
+	if (file->private_data != file) {
+		printk(KERN_DEBUG "megasas: fasync_helper was not "
+		       "called first\n");
+		return -EINVAL;
+	}
+
+	if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
+		return -EFAULT;
+
+	instance = megasas_lookup_instance(aen.host_no);
+
+	if (!instance)
+		return -ENODEV;
+
+	down(&instance->aen_mutex);
+	error = megasas_register_aen(instance, aen.seq_num,
+				     aen.class_locale_word);
+	up(&instance->aen_mutex);
+	return error;
+}
+
+/**
+ * megasas_mgmt_ioctl -	char node ioctl entry point
+ */
+static long
+megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case MEGASAS_IOC_FIRMWARE:
+		return megasas_mgmt_ioctl_fw(file, arg);
+
+	case MEGASAS_IOC_GET_AEN:
+		return megasas_mgmt_ioctl_aen(file, arg);
+	}
+
+	return -ENOTTY;
+}
+
+#ifdef CONFIG_COMPAT
+static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
+{
+	struct compat_megasas_iocpacket __user *cioc =
+	    (struct compat_megasas_iocpacket __user *)arg;
+	struct megasas_iocpacket __user *ioc =
+	    compat_alloc_user_space(sizeof(struct megasas_iocpacket));
+	int i;
+	int error = 0;
+
+	clear_user(ioc, sizeof(*ioc));
+
+	if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
+	    copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
+	    copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
+	    copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
+	    copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
+	    copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
+		return -EFAULT;
+
+	for (i = 0; i < MAX_IOCTL_SGE; i++) {
+		compat_uptr_t ptr;
+
+		if (get_user(ptr, &cioc->sgl[i].iov_base) ||
+		    put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
+		    copy_in_user(&ioc->sgl[i].iov_len,
+				 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
+			return -EFAULT;
+	}
+
+	error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
+
+	if (copy_in_user(&cioc->frame.hdr.cmd_status,
+			 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
+		printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
+		return -EFAULT;
+	}
+	return error;
+}
+
+static long
+megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
+			  unsigned long arg)
+{
+	switch (cmd) {
+	case MEGASAS_IOC_FIRMWARE:{
+			return megasas_mgmt_compat_ioctl_fw(file, arg);
+		}
+	case MEGASAS_IOC_GET_AEN:
+		return megasas_mgmt_ioctl_aen(file, arg);
+	}
+
+	return -ENOTTY;
+}
+#endif
+
+/*
+ * File operations structure for management interface
+ */
+static struct file_operations megasas_mgmt_fops = {
+	.owner = THIS_MODULE,
+	.open = megasas_mgmt_open,
+	.release = megasas_mgmt_release,
+	.fasync = megasas_mgmt_fasync,
+	.unlocked_ioctl = megasas_mgmt_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = megasas_mgmt_compat_ioctl,
+#endif
+};
+
+/*
+ * PCI hotplug support registration structure
+ */
+static struct pci_driver megasas_pci_driver = {
+
+	.name = "megaraid_sas",
+	.id_table = megasas_pci_table,
+	.probe = megasas_probe_one,
+	.remove = __devexit_p(megasas_detach_one),
+	.shutdown = megasas_shutdown,
+};
+
+/*
+ * Sysfs driver attributes
+ */
+static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
+{
+	return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
+			MEGASAS_VERSION);
+}
+
+static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
+
+static ssize_t
+megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
+{
+	return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
+			MEGASAS_RELDATE);
+}
+
+static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
+		   NULL);
+
+/**
+ * megasas_init - Driver load entry point
+ */
+static int __init megasas_init(void)
+{
+	int rval;
+
+	/*
+	 * Announce driver version and other information
+	 */
+	printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
+	       MEGASAS_EXT_VERSION);
+
+	memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
+
+	/*
+	 * Register character device node
+	 */
+	rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
+
+	if (rval < 0) {
+		printk(KERN_DEBUG "megasas: failed to open device node\n");
+		return rval;
+	}
+
+	megasas_mgmt_majorno = rval;
+
+	/*
+	 * Register ourselves as PCI hotplug module
+	 */
+	rval = pci_module_init(&megasas_pci_driver);
+
+	if (rval) {
+		printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
+		unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
+	}
+
+	driver_create_file(&megasas_pci_driver.driver, &driver_attr_version);
+	driver_create_file(&megasas_pci_driver.driver,
+			   &driver_attr_release_date);
+
+	return rval;
+}
+
+/**
+ * megasas_exit - Driver unload entry point
+ */
+static void __exit megasas_exit(void)
+{
+	driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
+	driver_remove_file(&megasas_pci_driver.driver,
+			   &driver_attr_release_date);
+
+	pci_unregister_driver(&megasas_pci_driver);
+	unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
+}
+
+module_init(megasas_init);
+module_exit(megasas_exit);
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
new file mode 100644
index 0000000..eaec9d5
--- /dev/null
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -0,0 +1,1142 @@
+/*
+ *
+ *		Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2003-2005  LSI Logic Corporation.
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ * FILE		: megaraid_sas.h
+ */
+
+#ifndef LSI_MEGARAID_SAS_H
+#define LSI_MEGARAID_SAS_H
+
+/**
+ * MegaRAID SAS Driver meta data
+ */
+#define MEGASAS_VERSION				"00.00.02.00-rc4"
+#define MEGASAS_RELDATE				"Sep 16, 2005"
+#define MEGASAS_EXT_VERSION			"Fri Sep 16 12:37:08 EDT 2005"
+
+/*
+ * =====================================
+ * MegaRAID SAS MFI firmware definitions
+ * =====================================
+ */
+
+/*
+ * MFI stands for  MegaRAID SAS FW Interface. This is just a moniker for 
+ * protocol between the software and firmware. Commands are issued using
+ * "message frames"
+ */
+
+/**
+ * FW posts its state in upper 4 bits of outbound_msg_0 register
+ */
+#define MFI_STATE_MASK				0xF0000000
+#define MFI_STATE_UNDEFINED			0x00000000
+#define MFI_STATE_BB_INIT			0x10000000
+#define MFI_STATE_FW_INIT			0x40000000
+#define MFI_STATE_WAIT_HANDSHAKE		0x60000000
+#define MFI_STATE_FW_INIT_2			0x70000000
+#define MFI_STATE_DEVICE_SCAN			0x80000000
+#define MFI_STATE_FLUSH_CACHE			0xA0000000
+#define MFI_STATE_READY				0xB0000000
+#define MFI_STATE_OPERATIONAL			0xC0000000
+#define MFI_STATE_FAULT				0xF0000000
+
+#define MEGAMFI_FRAME_SIZE			64
+
+/**
+ * During FW init, clear pending cmds & reset state using inbound_msg_0
+ *
+ * ABORT	: Abort all pending cmds
+ * READY	: Move from OPERATIONAL to READY state; discard queue info
+ * MFIMODE	: Discard (possible) low MFA posted in 64-bit mode (??)
+ * CLR_HANDSHAKE: FW is waiting for HANDSHAKE from BIOS or Driver
+ */
+#define MFI_INIT_ABORT				0x00000000
+#define MFI_INIT_READY				0x00000002
+#define MFI_INIT_MFIMODE			0x00000004
+#define MFI_INIT_CLEAR_HANDSHAKE		0x00000008
+#define MFI_RESET_FLAGS				MFI_INIT_READY|MFI_INIT_MFIMODE
+
+/**
+ * MFI frame flags
+ */
+#define MFI_FRAME_POST_IN_REPLY_QUEUE		0x0000
+#define MFI_FRAME_DONT_POST_IN_REPLY_QUEUE	0x0001
+#define MFI_FRAME_SGL32				0x0000
+#define MFI_FRAME_SGL64				0x0002
+#define MFI_FRAME_SENSE32			0x0000
+#define MFI_FRAME_SENSE64			0x0004
+#define MFI_FRAME_DIR_NONE			0x0000
+#define MFI_FRAME_DIR_WRITE			0x0008
+#define MFI_FRAME_DIR_READ			0x0010
+#define MFI_FRAME_DIR_BOTH			0x0018
+
+/**
+ * Definition for cmd_status
+ */
+#define MFI_CMD_STATUS_POLL_MODE		0xFF
+
+/**
+ * MFI command opcodes
+ */
+#define MFI_CMD_INIT				0x00
+#define MFI_CMD_LD_READ				0x01
+#define MFI_CMD_LD_WRITE			0x02
+#define MFI_CMD_LD_SCSI_IO			0x03
+#define MFI_CMD_PD_SCSI_IO			0x04
+#define MFI_CMD_DCMD				0x05
+#define MFI_CMD_ABORT				0x06
+#define MFI_CMD_SMP				0x07
+#define MFI_CMD_STP				0x08
+
+#define MR_DCMD_CTRL_GET_INFO			0x01010000
+
+#define MR_DCMD_CTRL_CACHE_FLUSH		0x01101000
+#define MR_FLUSH_CTRL_CACHE			0x01
+#define MR_FLUSH_DISK_CACHE			0x02
+
+#define MR_DCMD_CTRL_SHUTDOWN			0x01050000
+#define MR_ENABLE_DRIVE_SPINDOWN		0x01
+
+#define MR_DCMD_CTRL_EVENT_GET_INFO		0x01040100
+#define MR_DCMD_CTRL_EVENT_GET			0x01040300
+#define MR_DCMD_CTRL_EVENT_WAIT			0x01040500
+#define MR_DCMD_LD_GET_PROPERTIES		0x03030000
+
+#define MR_DCMD_CLUSTER				0x08000000
+#define MR_DCMD_CLUSTER_RESET_ALL		0x08010100
+#define MR_DCMD_CLUSTER_RESET_LD		0x08010200
+
+/**
+ * MFI command completion codes
+ */
+enum MFI_STAT {
+	MFI_STAT_OK = 0x00,
+	MFI_STAT_INVALID_CMD = 0x01,
+	MFI_STAT_INVALID_DCMD = 0x02,
+	MFI_STAT_INVALID_PARAMETER = 0x03,
+	MFI_STAT_INVALID_SEQUENCE_NUMBER = 0x04,
+	MFI_STAT_ABORT_NOT_POSSIBLE = 0x05,
+	MFI_STAT_APP_HOST_CODE_NOT_FOUND = 0x06,
+	MFI_STAT_APP_IN_USE = 0x07,
+	MFI_STAT_APP_NOT_INITIALIZED = 0x08,
+	MFI_STAT_ARRAY_INDEX_INVALID = 0x09,
+	MFI_STAT_ARRAY_ROW_NOT_EMPTY = 0x0a,
+	MFI_STAT_CONFIG_RESOURCE_CONFLICT = 0x0b,
+	MFI_STAT_DEVICE_NOT_FOUND = 0x0c,
+	MFI_STAT_DRIVE_TOO_SMALL = 0x0d,
+	MFI_STAT_FLASH_ALLOC_FAIL = 0x0e,
+	MFI_STAT_FLASH_BUSY = 0x0f,
+	MFI_STAT_FLASH_ERROR = 0x10,
+	MFI_STAT_FLASH_IMAGE_BAD = 0x11,
+	MFI_STAT_FLASH_IMAGE_INCOMPLETE = 0x12,
+	MFI_STAT_FLASH_NOT_OPEN = 0x13,
+	MFI_STAT_FLASH_NOT_STARTED = 0x14,
+	MFI_STAT_FLUSH_FAILED = 0x15,
+	MFI_STAT_HOST_CODE_NOT_FOUNT = 0x16,
+	MFI_STAT_LD_CC_IN_PROGRESS = 0x17,
+	MFI_STAT_LD_INIT_IN_PROGRESS = 0x18,
+	MFI_STAT_LD_LBA_OUT_OF_RANGE = 0x19,
+	MFI_STAT_LD_MAX_CONFIGURED = 0x1a,
+	MFI_STAT_LD_NOT_OPTIMAL = 0x1b,
+	MFI_STAT_LD_RBLD_IN_PROGRESS = 0x1c,
+	MFI_STAT_LD_RECON_IN_PROGRESS = 0x1d,
+	MFI_STAT_LD_WRONG_RAID_LEVEL = 0x1e,
+	MFI_STAT_MAX_SPARES_EXCEEDED = 0x1f,
+	MFI_STAT_MEMORY_NOT_AVAILABLE = 0x20,
+	MFI_STAT_MFC_HW_ERROR = 0x21,
+	MFI_STAT_NO_HW_PRESENT = 0x22,
+	MFI_STAT_NOT_FOUND = 0x23,
+	MFI_STAT_NOT_IN_ENCL = 0x24,
+	MFI_STAT_PD_CLEAR_IN_PROGRESS = 0x25,
+	MFI_STAT_PD_TYPE_WRONG = 0x26,
+	MFI_STAT_PR_DISABLED = 0x27,
+	MFI_STAT_ROW_INDEX_INVALID = 0x28,
+	MFI_STAT_SAS_CONFIG_INVALID_ACTION = 0x29,
+	MFI_STAT_SAS_CONFIG_INVALID_DATA = 0x2a,
+	MFI_STAT_SAS_CONFIG_INVALID_PAGE = 0x2b,
+	MFI_STAT_SAS_CONFIG_INVALID_TYPE = 0x2c,
+	MFI_STAT_SCSI_DONE_WITH_ERROR = 0x2d,
+	MFI_STAT_SCSI_IO_FAILED = 0x2e,
+	MFI_STAT_SCSI_RESERVATION_CONFLICT = 0x2f,
+	MFI_STAT_SHUTDOWN_FAILED = 0x30,
+	MFI_STAT_TIME_NOT_SET = 0x31,
+	MFI_STAT_WRONG_STATE = 0x32,
+	MFI_STAT_LD_OFFLINE = 0x33,
+	MFI_STAT_PEER_NOTIFICATION_REJECTED = 0x34,
+	MFI_STAT_PEER_NOTIFICATION_FAILED = 0x35,
+	MFI_STAT_RESERVATION_IN_PROGRESS = 0x36,
+	MFI_STAT_I2C_ERRORS_DETECTED = 0x37,
+	MFI_STAT_PCI_ERRORS_DETECTED = 0x38,
+
+	MFI_STAT_INVALID_STATUS = 0xFF
+};
+
+/*
+ * Number of mailbox bytes in DCMD message frame
+ */
+#define MFI_MBOX_SIZE				12
+
+enum MR_EVT_CLASS {
+
+	MR_EVT_CLASS_DEBUG = -2,
+	MR_EVT_CLASS_PROGRESS = -1,
+	MR_EVT_CLASS_INFO = 0,
+	MR_EVT_CLASS_WARNING = 1,
+	MR_EVT_CLASS_CRITICAL = 2,
+	MR_EVT_CLASS_FATAL = 3,
+	MR_EVT_CLASS_DEAD = 4,
+
+};
+
+enum MR_EVT_LOCALE {
+
+	MR_EVT_LOCALE_LD = 0x0001,
+	MR_EVT_LOCALE_PD = 0x0002,
+	MR_EVT_LOCALE_ENCL = 0x0004,
+	MR_EVT_LOCALE_BBU = 0x0008,
+	MR_EVT_LOCALE_SAS = 0x0010,
+	MR_EVT_LOCALE_CTRL = 0x0020,
+	MR_EVT_LOCALE_CONFIG = 0x0040,
+	MR_EVT_LOCALE_CLUSTER = 0x0080,
+	MR_EVT_LOCALE_ALL = 0xffff,
+
+};
+
+enum MR_EVT_ARGS {
+
+	MR_EVT_ARGS_NONE,
+	MR_EVT_ARGS_CDB_SENSE,
+	MR_EVT_ARGS_LD,
+	MR_EVT_ARGS_LD_COUNT,
+	MR_EVT_ARGS_LD_LBA,
+	MR_EVT_ARGS_LD_OWNER,
+	MR_EVT_ARGS_LD_LBA_PD_LBA,
+	MR_EVT_ARGS_LD_PROG,
+	MR_EVT_ARGS_LD_STATE,
+	MR_EVT_ARGS_LD_STRIP,
+	MR_EVT_ARGS_PD,
+	MR_EVT_ARGS_PD_ERR,
+	MR_EVT_ARGS_PD_LBA,
+	MR_EVT_ARGS_PD_LBA_LD,
+	MR_EVT_ARGS_PD_PROG,
+	MR_EVT_ARGS_PD_STATE,
+	MR_EVT_ARGS_PCI,
+	MR_EVT_ARGS_RATE,
+	MR_EVT_ARGS_STR,
+	MR_EVT_ARGS_TIME,
+	MR_EVT_ARGS_ECC,
+
+};
+
+/*
+ * SAS controller properties
+ */
+struct megasas_ctrl_prop {
+
+	u16 seq_num;
+	u16 pred_fail_poll_interval;
+	u16 intr_throttle_count;
+	u16 intr_throttle_timeouts;
+	u8 rebuild_rate;
+	u8 patrol_read_rate;
+	u8 bgi_rate;
+	u8 cc_rate;
+	u8 recon_rate;
+	u8 cache_flush_interval;
+	u8 spinup_drv_count;
+	u8 spinup_delay;
+	u8 cluster_enable;
+	u8 coercion_mode;
+	u8 alarm_enable;
+	u8 disable_auto_rebuild;
+	u8 disable_battery_warn;
+	u8 ecc_bucket_size;
+	u16 ecc_bucket_leak_rate;
+	u8 restore_hotspare_on_insertion;
+	u8 expose_encl_devices;
+	u8 reserved[38];
+
+} __attribute__ ((packed));
+
+/*
+ * SAS controller information
+ */
+struct megasas_ctrl_info {
+
+	/*
+	 * PCI device information
+	 */
+	struct {
+
+		u16 vendor_id;
+		u16 device_id;
+		u16 sub_vendor_id;
+		u16 sub_device_id;
+		u8 reserved[24];
+
+	} __attribute__ ((packed)) pci;
+
+	/*
+	 * Host interface information
+	 */
+	struct {
+
+		u8 PCIX:1;
+		u8 PCIE:1;
+		u8 iSCSI:1;
+		u8 SAS_3G:1;
+		u8 reserved_0:4;
+		u8 reserved_1[6];
+		u8 port_count;
+		u64 port_addr[8];
+
+	} __attribute__ ((packed)) host_interface;
+
+	/*
+	 * Device (backend) interface information
+	 */
+	struct {
+
+		u8 SPI:1;
+		u8 SAS_3G:1;
+		u8 SATA_1_5G:1;
+		u8 SATA_3G:1;
+		u8 reserved_0:4;
+		u8 reserved_1[6];
+		u8 port_count;
+		u64 port_addr[8];
+
+	} __attribute__ ((packed)) device_interface;
+
+	/*
+	 * List of components residing in flash. All str are null terminated
+	 */
+	u32 image_check_word;
+	u32 image_component_count;
+
+	struct {
+
+		char name[8];
+		char version[32];
+		char build_date[16];
+		char built_time[16];
+
+	} __attribute__ ((packed)) image_component[8];
+
+	/*
+	 * List of flash components that have been flashed on the card, but
+	 * are not in use, pending reset of the adapter. This list will be
+	 * empty if a flash operation has not occurred. All stings are null
+	 * terminated
+	 */
+	u32 pending_image_component_count;
+
+	struct {
+
+		char name[8];
+		char version[32];
+		char build_date[16];
+		char build_time[16];
+
+	} __attribute__ ((packed)) pending_image_component[8];
+
+	u8 max_arms;
+	u8 max_spans;
+	u8 max_arrays;
+	u8 max_lds;
+
+	char product_name[80];
+	char serial_no[32];
+
+	/*
+	 * Other physical/controller/operation information. Indicates the
+	 * presence of the hardware
+	 */
+	struct {
+
+		u32 bbu:1;
+		u32 alarm:1;
+		u32 nvram:1;
+		u32 uart:1;
+		u32 reserved:28;
+
+	} __attribute__ ((packed)) hw_present;
+
+	u32 current_fw_time;
+
+	/*
+	 * Maximum data transfer sizes
+	 */
+	u16 max_concurrent_cmds;
+	u16 max_sge_count;
+	u32 max_request_size;
+
+	/*
+	 * Logical and physical device counts
+	 */
+	u16 ld_present_count;
+	u16 ld_degraded_count;
+	u16 ld_offline_count;
+
+	u16 pd_present_count;
+	u16 pd_disk_present_count;
+	u16 pd_disk_pred_failure_count;
+	u16 pd_disk_failed_count;
+
+	/*
+	 * Memory size information
+	 */
+	u16 nvram_size;
+	u16 memory_size;
+	u16 flash_size;
+
+	/*
+	 * Error counters
+	 */
+	u16 mem_correctable_error_count;
+	u16 mem_uncorrectable_error_count;
+
+	/*
+	 * Cluster information
+	 */
+	u8 cluster_permitted;
+	u8 cluster_active;
+
+	/*
+	 * Additional max data transfer sizes
+	 */
+	u16 max_strips_per_io;
+
+	/*
+	 * Controller capabilities structures
+	 */
+	struct {
+
+		u32 raid_level_0:1;
+		u32 raid_level_1:1;
+		u32 raid_level_5:1;
+		u32 raid_level_1E:1;
+		u32 raid_level_6:1;
+		u32 reserved:27;
+
+	} __attribute__ ((packed)) raid_levels;
+
+	struct {
+
+		u32 rbld_rate:1;
+		u32 cc_rate:1;
+		u32 bgi_rate:1;
+		u32 recon_rate:1;
+		u32 patrol_rate:1;
+		u32 alarm_control:1;
+		u32 cluster_supported:1;
+		u32 bbu:1;
+		u32 spanning_allowed:1;
+		u32 dedicated_hotspares:1;
+		u32 revertible_hotspares:1;
+		u32 foreign_config_import:1;
+		u32 self_diagnostic:1;
+		u32 mixed_redundancy_arr:1;
+		u32 global_hot_spares:1;
+		u32 reserved:17;
+
+	} __attribute__ ((packed)) adapter_operations;
+
+	struct {
+
+		u32 read_policy:1;
+		u32 write_policy:1;
+		u32 io_policy:1;
+		u32 access_policy:1;
+		u32 disk_cache_policy:1;
+		u32 reserved:27;
+
+	} __attribute__ ((packed)) ld_operations;
+
+	struct {
+
+		u8 min;
+		u8 max;
+		u8 reserved[2];
+
+	} __attribute__ ((packed)) stripe_sz_ops;
+
+	struct {
+
+		u32 force_online:1;
+		u32 force_offline:1;
+		u32 force_rebuild:1;
+		u32 reserved:29;
+
+	} __attribute__ ((packed)) pd_operations;
+
+	struct {
+
+		u32 ctrl_supports_sas:1;
+		u32 ctrl_supports_sata:1;
+		u32 allow_mix_in_encl:1;
+		u32 allow_mix_in_ld:1;
+		u32 allow_sata_in_cluster:1;
+		u32 reserved:27;
+
+	} __attribute__ ((packed)) pd_mix_support;
+
+	/*
+	 * Define ECC single-bit-error bucket information
+	 */
+	u8 ecc_bucket_count;
+	u8 reserved_2[11];
+
+	/*
+	 * Include the controller properties (changeable items)
+	 */
+	struct megasas_ctrl_prop properties;
+
+	/*
+	 * Define FW pkg version (set in envt v'bles on OEM basis)
+	 */
+	char package_version[0x60];
+
+	u8 pad[0x800 - 0x6a0];
+
+} __attribute__ ((packed));
+
+/*
+ * ===============================
+ * MegaRAID SAS driver definitions
+ * ===============================
+ */
+#define MEGASAS_MAX_PD_CHANNELS			2
+#define MEGASAS_MAX_LD_CHANNELS			2
+#define MEGASAS_MAX_CHANNELS			(MEGASAS_MAX_PD_CHANNELS + \
+						MEGASAS_MAX_LD_CHANNELS)
+#define MEGASAS_MAX_DEV_PER_CHANNEL		128
+#define MEGASAS_DEFAULT_INIT_ID			-1
+#define MEGASAS_MAX_LUN				8
+#define MEGASAS_MAX_LD				64
+
+/*
+ * When SCSI mid-layer calls driver's reset routine, driver waits for
+ * MEGASAS_RESET_WAIT_TIME seconds for all outstanding IO to complete. Note
+ * that the driver cannot _actually_ abort or reset pending commands. While
+ * it is waiting for the commands to complete, it prints a diagnostic message
+ * every MEGASAS_RESET_NOTICE_INTERVAL seconds
+ */
+#define MEGASAS_RESET_WAIT_TIME			180
+#define	MEGASAS_RESET_NOTICE_INTERVAL		5
+
+#define MEGASAS_IOCTL_CMD			0
+
+/*
+ * FW reports the maximum of number of commands that it can accept (maximum
+ * commands that can be outstanding) at any time. The driver must report a
+ * lower number to the mid layer because it can issue a few internal commands
+ * itself (E.g, AEN, abort cmd, IOCTLs etc). The number of commands it needs
+ * is shown below
+ */
+#define MEGASAS_INT_CMDS			32
+
+/*
+ * FW can accept both 32 and 64 bit SGLs. We want to allocate 32/64 bit
+ * SGLs based on the size of dma_addr_t
+ */
+#define IS_DMA64				(sizeof(dma_addr_t) == 8)
+
+#define MFI_OB_INTR_STATUS_MASK			0x00000002
+#define MFI_POLL_TIMEOUT_SECS			10
+
+struct megasas_register_set {
+
+	u32 reserved_0[4];	/*0000h */
+
+	u32 inbound_msg_0;	/*0010h */
+	u32 inbound_msg_1;	/*0014h */
+	u32 outbound_msg_0;	/*0018h */
+	u32 outbound_msg_1;	/*001Ch */
+
+	u32 inbound_doorbell;	/*0020h */
+	u32 inbound_intr_status;	/*0024h */
+	u32 inbound_intr_mask;	/*0028h */
+
+	u32 outbound_doorbell;	/*002Ch */
+	u32 outbound_intr_status;	/*0030h */
+	u32 outbound_intr_mask;	/*0034h */
+
+	u32 reserved_1[2];	/*0038h */
+
+	u32 inbound_queue_port;	/*0040h */
+	u32 outbound_queue_port;	/*0044h */
+
+	u32 reserved_2;		/*004Ch */
+
+	u32 index_registers[1004];	/*0050h */
+
+} __attribute__ ((packed));
+
+struct megasas_sge32 {
+
+	u32 phys_addr;
+	u32 length;
+
+} __attribute__ ((packed));
+
+struct megasas_sge64 {
+
+	u64 phys_addr;
+	u32 length;
+
+} __attribute__ ((packed));
+
+union megasas_sgl {
+
+	struct megasas_sge32 sge32[1];
+	struct megasas_sge64 sge64[1];
+
+} __attribute__ ((packed));
+
+struct megasas_header {
+
+	u8 cmd;			/*00h */
+	u8 sense_len;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 scsi_status;		/*03h */
+
+	u8 target_id;		/*04h */
+	u8 lun;			/*05h */
+	u8 cdb_len;		/*06h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+	u32 data_xferlen;	/*14h */
+
+} __attribute__ ((packed));
+
+union megasas_sgl_frame {
+
+	struct megasas_sge32 sge32[8];
+	struct megasas_sge64 sge64[5];
+
+} __attribute__ ((packed));
+
+struct megasas_init_frame {
+
+	u8 cmd;			/*00h */
+	u8 reserved_0;		/*01h */
+	u8 cmd_status;		/*02h */
+
+	u8 reserved_1;		/*03h */
+	u32 reserved_2;		/*04h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 reserved_3;		/*12h */
+	u32 data_xfer_len;	/*14h */
+
+	u32 queue_info_new_phys_addr_lo;	/*18h */
+	u32 queue_info_new_phys_addr_hi;	/*1Ch */
+	u32 queue_info_old_phys_addr_lo;	/*20h */
+	u32 queue_info_old_phys_addr_hi;	/*24h */
+
+	u32 reserved_4[6];	/*28h */
+
+} __attribute__ ((packed));
+
+struct megasas_init_queue_info {
+
+	u32 init_flags;		/*00h */
+	u32 reply_queue_entries;	/*04h */
+
+	u32 reply_queue_start_phys_addr_lo;	/*08h */
+	u32 reply_queue_start_phys_addr_hi;	/*0Ch */
+	u32 producer_index_phys_addr_lo;	/*10h */
+	u32 producer_index_phys_addr_hi;	/*14h */
+	u32 consumer_index_phys_addr_lo;	/*18h */
+	u32 consumer_index_phys_addr_hi;	/*1Ch */
+
+} __attribute__ ((packed));
+
+struct megasas_io_frame {
+
+	u8 cmd;			/*00h */
+	u8 sense_len;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 scsi_status;		/*03h */
+
+	u8 target_id;		/*04h */
+	u8 access_byte;		/*05h */
+	u8 reserved_0;		/*06h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+	u32 lba_count;		/*14h */
+
+	u32 sense_buf_phys_addr_lo;	/*18h */
+	u32 sense_buf_phys_addr_hi;	/*1Ch */
+
+	u32 start_lba_lo;	/*20h */
+	u32 start_lba_hi;	/*24h */
+
+	union megasas_sgl sgl;	/*28h */
+
+} __attribute__ ((packed));
+
+struct megasas_pthru_frame {
+
+	u8 cmd;			/*00h */
+	u8 sense_len;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 scsi_status;		/*03h */
+
+	u8 target_id;		/*04h */
+	u8 lun;			/*05h */
+	u8 cdb_len;		/*06h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+	u32 data_xfer_len;	/*14h */
+
+	u32 sense_buf_phys_addr_lo;	/*18h */
+	u32 sense_buf_phys_addr_hi;	/*1Ch */
+
+	u8 cdb[16];		/*20h */
+	union megasas_sgl sgl;	/*30h */
+
+} __attribute__ ((packed));
+
+struct megasas_dcmd_frame {
+
+	u8 cmd;			/*00h */
+	u8 reserved_0;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 reserved_1[4];	/*03h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+
+	u32 data_xfer_len;	/*14h */
+	u32 opcode;		/*18h */
+
+	union {			/*1Ch */
+		u8 b[12];
+		u16 s[6];
+		u32 w[3];
+	} mbox;
+
+	union megasas_sgl sgl;	/*28h */
+
+} __attribute__ ((packed));
+
+struct megasas_abort_frame {
+
+	u8 cmd;			/*00h */
+	u8 reserved_0;		/*01h */
+	u8 cmd_status;		/*02h */
+
+	u8 reserved_1;		/*03h */
+	u32 reserved_2;		/*04h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 reserved_3;		/*12h */
+	u32 reserved_4;		/*14h */
+
+	u32 abort_context;	/*18h */
+	u32 pad_1;		/*1Ch */
+
+	u32 abort_mfi_phys_addr_lo;	/*20h */
+	u32 abort_mfi_phys_addr_hi;	/*24h */
+
+	u32 reserved_5[6];	/*28h */
+
+} __attribute__ ((packed));
+
+struct megasas_smp_frame {
+
+	u8 cmd;			/*00h */
+	u8 reserved_1;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 connection_status;	/*03h */
+
+	u8 reserved_2[3];	/*04h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+
+	u32 data_xfer_len;	/*14h */
+	u64 sas_addr;		/*18h */
+
+	union {
+		struct megasas_sge32 sge32[2];	/* [0]: resp [1]: req */
+		struct megasas_sge64 sge64[2];	/* [0]: resp [1]: req */
+	} sgl;
+
+} __attribute__ ((packed));
+
+struct megasas_stp_frame {
+
+	u8 cmd;			/*00h */
+	u8 reserved_1;		/*01h */
+	u8 cmd_status;		/*02h */
+	u8 reserved_2;		/*03h */
+
+	u8 target_id;		/*04h */
+	u8 reserved_3[2];	/*05h */
+	u8 sge_count;		/*07h */
+
+	u32 context;		/*08h */
+	u32 pad_0;		/*0Ch */
+
+	u16 flags;		/*10h */
+	u16 timeout;		/*12h */
+
+	u32 data_xfer_len;	/*14h */
+
+	u16 fis[10];		/*18h */
+	u32 stp_flags;
+
+	union {
+		struct megasas_sge32 sge32[2];	/* [0]: resp [1]: data */
+		struct megasas_sge64 sge64[2];	/* [0]: resp [1]: data */
+	} sgl;
+
+} __attribute__ ((packed));
+
+union megasas_frame {
+
+	struct megasas_header hdr;
+	struct megasas_init_frame init;
+	struct megasas_io_frame io;
+	struct megasas_pthru_frame pthru;
+	struct megasas_dcmd_frame dcmd;
+	struct megasas_abort_frame abort;
+	struct megasas_smp_frame smp;
+	struct megasas_stp_frame stp;
+
+	u8 raw_bytes[64];
+};
+
+struct megasas_cmd;
+
+union megasas_evt_class_locale {
+
+	struct {
+		u16 locale;
+		u8 reserved;
+		s8 class;
+	} __attribute__ ((packed)) members;
+
+	u32 word;
+
+} __attribute__ ((packed));
+
+struct megasas_evt_log_info {
+	u32 newest_seq_num;
+	u32 oldest_seq_num;
+	u32 clear_seq_num;
+	u32 shutdown_seq_num;
+	u32 boot_seq_num;
+
+} __attribute__ ((packed));
+
+struct megasas_progress {
+
+	u16 progress;
+	u16 elapsed_seconds;
+
+} __attribute__ ((packed));
+
+struct megasas_evtarg_ld {
+
+	u16 target_id;
+	u8 ld_index;
+	u8 reserved;
+
+} __attribute__ ((packed));
+
+struct megasas_evtarg_pd {
+	u16 device_id;
+	u8 encl_index;
+	u8 slot_number;
+
+} __attribute__ ((packed));
+
+struct megasas_evt_detail {
+
+	u32 seq_num;
+	u32 time_stamp;
+	u32 code;
+	union megasas_evt_class_locale cl;
+	u8 arg_type;
+	u8 reserved1[15];
+
+	union {
+		struct {
+			struct megasas_evtarg_pd pd;
+			u8 cdb_length;
+			u8 sense_length;
+			u8 reserved[2];
+			u8 cdb[16];
+			u8 sense[64];
+		} __attribute__ ((packed)) cdbSense;
+
+		struct megasas_evtarg_ld ld;
+
+		struct {
+			struct megasas_evtarg_ld ld;
+			u64 count;
+		} __attribute__ ((packed)) ld_count;
+
+		struct {
+			u64 lba;
+			struct megasas_evtarg_ld ld;
+		} __attribute__ ((packed)) ld_lba;
+
+		struct {
+			struct megasas_evtarg_ld ld;
+			u32 prevOwner;
+			u32 newOwner;
+		} __attribute__ ((packed)) ld_owner;
+
+		struct {
+			u64 ld_lba;
+			u64 pd_lba;
+			struct megasas_evtarg_ld ld;
+			struct megasas_evtarg_pd pd;
+		} __attribute__ ((packed)) ld_lba_pd_lba;
+
+		struct {
+			struct megasas_evtarg_ld ld;
+			struct megasas_progress prog;
+		} __attribute__ ((packed)) ld_prog;
+
+		struct {
+			struct megasas_evtarg_ld ld;
+			u32 prev_state;
+			u32 new_state;
+		} __attribute__ ((packed)) ld_state;
+
+		struct {
+			u64 strip;
+			struct megasas_evtarg_ld ld;
+		} __attribute__ ((packed)) ld_strip;
+
+		struct megasas_evtarg_pd pd;
+
+		struct {
+			struct megasas_evtarg_pd pd;
+			u32 err;
+		} __attribute__ ((packed)) pd_err;
+
+		struct {
+			u64 lba;
+			struct megasas_evtarg_pd pd;
+		} __attribute__ ((packed)) pd_lba;
+
+		struct {
+			u64 lba;
+			struct megasas_evtarg_pd pd;
+			struct megasas_evtarg_ld ld;
+		} __attribute__ ((packed)) pd_lba_ld;
+
+		struct {
+			struct megasas_evtarg_pd pd;
+			struct megasas_progress prog;
+		} __attribute__ ((packed)) pd_prog;
+
+		struct {
+			struct megasas_evtarg_pd pd;
+			u32 prevState;
+			u32 newState;
+		} __attribute__ ((packed)) pd_state;
+
+		struct {
+			u16 vendorId;
+			u16 deviceId;
+			u16 subVendorId;
+			u16 subDeviceId;
+		} __attribute__ ((packed)) pci;
+
+		u32 rate;
+		char str[96];
+
+		struct {
+			u32 rtc;
+			u32 elapsedSeconds;
+		} __attribute__ ((packed)) time;
+
+		struct {
+			u32 ecar;
+			u32 elog;
+			char str[64];
+		} __attribute__ ((packed)) ecc;
+
+		u8 b[96];
+		u16 s[48];
+		u32 w[24];
+		u64 d[12];
+	} args;
+
+	char description[128];
+
+} __attribute__ ((packed));
+
+struct megasas_instance {
+
+	u32 *producer;
+	dma_addr_t producer_h;
+	u32 *consumer;
+	dma_addr_t consumer_h;
+
+	u32 *reply_queue;
+	dma_addr_t reply_queue_h;
+
+	unsigned long base_addr;
+	struct megasas_register_set __iomem *reg_set;
+
+	s8 init_id;
+	u8 reserved[3];
+
+	u16 max_num_sge;
+	u16 max_fw_cmds;
+	u32 max_sectors_per_req;
+
+	struct megasas_cmd **cmd_list;
+	struct list_head cmd_pool;
+	spinlock_t cmd_pool_lock;
+	struct dma_pool *frame_dma_pool;
+	struct dma_pool *sense_dma_pool;
+
+	struct megasas_evt_detail *evt_detail;
+	dma_addr_t evt_detail_h;
+	struct megasas_cmd *aen_cmd;
+	struct semaphore aen_mutex;
+	struct semaphore ioctl_sem;
+
+	struct Scsi_Host *host;
+
+	wait_queue_head_t int_cmd_wait_q;
+	wait_queue_head_t abort_cmd_wait_q;
+
+	struct pci_dev *pdev;
+	u32 unique_id;
+
+	u32 fw_outstanding;
+	u32 hw_crit_error;
+	spinlock_t instance_lock;
+};
+
+#define MEGASAS_IS_LOGICAL(scp)						\
+	(scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1
+
+#define MEGASAS_DEV_INDEX(inst, scp)					\
+	((scp->device->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) + 	\
+	scp->device->id
+
+struct megasas_cmd {
+
+	union megasas_frame *frame;
+	dma_addr_t frame_phys_addr;
+	u8 *sense;
+	dma_addr_t sense_phys_addr;
+
+	u32 index;
+	u8 sync_cmd;
+	u8 cmd_status;
+	u16 abort_aen;
+
+	struct list_head list;
+	struct scsi_cmnd *scmd;
+	struct megasas_instance *instance;
+	u32 frame_count;
+};
+
+#define MAX_MGMT_ADAPTERS		1024
+#define MAX_IOCTL_SGE			16
+
+struct megasas_iocpacket {
+
+	u16 host_no;
+	u16 __pad1;
+	u32 sgl_off;
+	u32 sge_count;
+	u32 sense_off;
+	u32 sense_len;
+	union {
+		u8 raw[128];
+		struct megasas_header hdr;
+	} frame;
+
+	struct iovec sgl[MAX_IOCTL_SGE];
+
+} __attribute__ ((packed));
+
+struct megasas_aen {
+	u16 host_no;
+	u16 __pad1;
+	u32 seq_num;
+	u32 class_locale_word;
+} __attribute__ ((packed));
+
+#ifdef CONFIG_COMPAT
+struct compat_megasas_iocpacket {
+	u16 host_no;
+	u16 __pad1;
+	u32 sgl_off;
+	u32 sge_count;
+	u32 sense_off;
+	u32 sense_len;
+	union {
+		u8 raw[128];
+		struct megasas_header hdr;
+	} frame;
+	struct compat_iovec sgl[MAX_IOCTL_SGE];
+} __attribute__ ((packed));
+
+#define MEGASAS_IOC_FIRMWARE	_IOWR('M', 1, struct compat_megasas_iocpacket)
+#else
+#define MEGASAS_IOC_FIRMWARE	_IOWR('M', 1, struct megasas_iocpacket)
+#endif
+
+#define MEGASAS_IOC_GET_AEN	_IOW('M', 3, struct megasas_aen)
+
+struct megasas_mgmt_info {
+
+	u16 count;
+	struct megasas_instance *instance[MAX_MGMT_ADAPTERS];
+	int max_index;
+};
+
+#endif				/*LSI_MEGARAID_SAS_H */
diff --git a/drivers/scsi/qla2xxx/qla_rscn.c b/drivers/scsi/qla2xxx/qla_rscn.c
index bdc3bc7..1eba988 100644
--- a/drivers/scsi/qla2xxx/qla_rscn.c
+++ b/drivers/scsi/qla2xxx/qla_rscn.c
@@ -330,6 +330,8 @@ qla2x00_update_login_fcport(scsi_qla_host_t *ha, struct mbx_entry *mbxstat,
 	fcport->flags &= ~FCF_FAILOVER_NEEDED;
 	fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
 	atomic_set(&fcport->state, FCS_ONLINE);
+	if (fcport->rport)
+		fc_remote_port_unblock(fcport->rport);
 }
 
 
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index fcf9f6c..327c5d7 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -587,6 +587,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, char *inq_result,
 	if (sdev->scsi_level >= 2 ||
 	    (sdev->scsi_level == 1 && (inq_result[3] & 0x0f) == 1))
 		sdev->scsi_level++;
+	sdev->sdev_target->scsi_level = sdev->scsi_level;
 
 	return 0;
 }
@@ -771,6 +772,15 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags)
 	return SCSI_SCAN_LUN_PRESENT;
 }
 
+static inline void scsi_destroy_sdev(struct scsi_device *sdev)
+{
+	if (sdev->host->hostt->slave_destroy)
+		sdev->host->hostt->slave_destroy(sdev);
+	transport_destroy_device(&sdev->sdev_gendev);
+	put_device(&sdev->sdev_gendev);
+}
+
+
 /**
  * scsi_probe_and_add_lun - probe a LUN, if a LUN is found add it
  * @starget:	pointer to target device structure
@@ -803,9 +813,9 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
 	 * The rescan flag is used as an optimization, the first scan of a
 	 * host adapter calls into here with rescan == 0.
 	 */
-	if (rescan) {
-		sdev = scsi_device_lookup_by_target(starget, lun);
-		if (sdev) {
+	sdev = scsi_device_lookup_by_target(starget, lun);
+	if (sdev) {
+		if (rescan || sdev->sdev_state != SDEV_CREATED) {
 			SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO
 				"scsi scan: device exists on %s\n",
 				sdev->sdev_gendev.bus_id));
@@ -820,9 +830,9 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
 								 sdev->model);
 			return SCSI_SCAN_LUN_PRESENT;
 		}
-	}
-
-	sdev = scsi_alloc_sdev(starget, lun, hostdata);
+		scsi_device_put(sdev);
+	} else
+		sdev = scsi_alloc_sdev(starget, lun, hostdata);
 	if (!sdev)
 		goto out;
 
@@ -877,12 +887,8 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
 				res = SCSI_SCAN_NO_RESPONSE;
 			}
 		}
-	} else {
-		if (sdev->host->hostt->slave_destroy)
-			sdev->host->hostt->slave_destroy(sdev);
-		transport_destroy_device(&sdev->sdev_gendev);
-		put_device(&sdev->sdev_gendev);
-	}
+	} else
+		scsi_destroy_sdev(sdev);
  out:
 	return res;
 }
@@ -1054,7 +1060,7 @@ EXPORT_SYMBOL(int_to_scsilun);
  *     0: scan completed (or no memory, so further scanning is futile)
  *     1: no report lun scan, or not configured
  **/
-static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
+static int scsi_report_lun_scan(struct scsi_target *starget, int bflags,
 				int rescan)
 {
 	char devname[64];
@@ -1067,7 +1073,8 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
 	struct scsi_lun *lunp, *lun_data;
 	u8 *data;
 	struct scsi_sense_hdr sshdr;
-	struct scsi_target *starget = scsi_target(sdev);
+	struct scsi_device *sdev;
+	struct Scsi_Host *shost = dev_to_shost(&starget->dev);
 
 	/*
 	 * Only support SCSI-3 and up devices if BLIST_NOREPORTLUN is not set.
@@ -1075,15 +1082,23 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
 	 * support more than 8 LUNs.
 	 */
 	if ((bflags & BLIST_NOREPORTLUN) || 
-	     sdev->scsi_level < SCSI_2 ||
-	    (sdev->scsi_level < SCSI_3 && 
-	     (!(bflags & BLIST_REPORTLUN2) || sdev->host->max_lun <= 8)) )
+	     starget->scsi_level < SCSI_2 ||
+	    (starget->scsi_level < SCSI_3 && 
+	     (!(bflags & BLIST_REPORTLUN2) || shost->max_lun <= 8)) )
 		return 1;
 	if (bflags & BLIST_NOLUN)
 		return 0;
 
+	if (!(sdev = scsi_device_lookup_by_target(starget, 0))) {
+		sdev = scsi_alloc_sdev(starget, 0, NULL);
+		if (!sdev)
+			return 0;
+		if (scsi_device_get(sdev))
+			return 0;
+	}
+
 	sprintf(devname, "host %d channel %d id %d",
-		sdev->host->host_no, sdev->channel, sdev->id);
+		shost->host_no, sdev->channel, sdev->id);
 
 	/*
 	 * Allocate enough to hold the header (the same size as one scsi_lun)
@@ -1098,8 +1113,10 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
 	length = (max_scsi_report_luns + 1) * sizeof(struct scsi_lun);
 	lun_data = kmalloc(length, GFP_ATOMIC |
 			   (sdev->host->unchecked_isa_dma ? __GFP_DMA : 0));
-	if (!lun_data)
+	if (!lun_data) {
+		printk(ALLOC_FAILURE_MSG, __FUNCTION__);
 		goto out;
+	}
 
 	scsi_cmd[0] = REPORT_LUNS;
 
@@ -1201,10 +1218,6 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
 			for (i = 0; i < sizeof(struct scsi_lun); i++)
 				printk("%02x", data[i]);
 			printk(" has a LUN larger than currently supported.\n");
-		} else if (lun == 0) {
-			/*
-			 * LUN 0 has already been scanned.
-			 */
 		} else if (lun > sdev->host->max_lun) {
 			printk(KERN_WARNING "scsi: %s lun%d has a LUN larger"
 			       " than allowed by the host adapter\n",
@@ -1227,13 +1240,13 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
 	}
 
 	kfree(lun_data);
-	return 0;
-
  out:
-	/*
-	 * We are out of memory, don't try scanning any further.
-	 */
-	printk(ALLOC_FAILURE_MSG, __FUNCTION__);
+	scsi_device_put(sdev);
+	if (sdev->sdev_state == SDEV_CREATED)
+		/*
+		 * the sdev we used didn't appear in the report luns scan
+		 */
+		scsi_destroy_sdev(sdev);
 	return 0;
 }
 
@@ -1299,7 +1312,6 @@ static void __scsi_scan_target(struct device *parent, unsigned int channel,
 	struct Scsi_Host *shost = dev_to_shost(parent);
 	int bflags = 0;
 	int res;
-	struct scsi_device *sdev = NULL;
 	struct scsi_target *starget;
 
 	if (shost->this_id == id)
@@ -1325,27 +1337,16 @@ static void __scsi_scan_target(struct device *parent, unsigned int channel,
 	 * Scan LUN 0, if there is some response, scan further. Ideally, we
 	 * would not configure LUN 0 until all LUNs are scanned.
 	 */
-	res = scsi_probe_and_add_lun(starget, 0, &bflags, &sdev, rescan, NULL);
-	if (res == SCSI_SCAN_LUN_PRESENT) {
-		if (scsi_report_lun_scan(sdev, bflags, rescan) != 0)
+	res = scsi_probe_and_add_lun(starget, 0, &bflags, NULL, rescan, NULL);
+	if (res == SCSI_SCAN_LUN_PRESENT || res == SCSI_SCAN_TARGET_PRESENT) {
+		if (scsi_report_lun_scan(starget, bflags, rescan) != 0)
 			/*
 			 * The REPORT LUN did not scan the target,
 			 * do a sequential scan.
 			 */
 			scsi_sequential_lun_scan(starget, bflags,
-				       	res, sdev->scsi_level, rescan);
-	} else if (res == SCSI_SCAN_TARGET_PRESENT) {
-		/*
-		 * There's a target here, but lun 0 is offline so we
-		 * can't use the report_lun scan.  Fall back to a
-		 * sequential lun scan with a bflags of SPARSELUN and
-		 * a default scsi level of SCSI_2
-		 */
-		scsi_sequential_lun_scan(starget, BLIST_SPARSELUN,
-				SCSI_SCAN_TARGET_PRESENT, SCSI_2, rescan);
+				       	res, starget->scsi_level, rescan);
 	}
-	if (sdev)
-		scsi_device_put(sdev);
 
  out_reap:
 	/* now determine if the target has any children at all
@@ -1542,10 +1543,7 @@ void scsi_free_host_dev(struct scsi_device *sdev)
 {
 	BUG_ON(sdev->id != sdev->host->this_id);
 
-	if (sdev->host->hostt->slave_destroy)
-		sdev->host->hostt->slave_destroy(sdev);
-	transport_destroy_device(&sdev->sdev_gendev);
-	put_device(&sdev->sdev_gendev);
+	scsi_destroy_sdev(sdev);
 }
 EXPORT_SYMBOL(scsi_free_host_dev);
 
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index ff724bbe..1d145d2 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -628,17 +628,16 @@ sas_rphy_delete(struct sas_rphy *rphy)
 	struct Scsi_Host *shost = dev_to_shost(parent->dev.parent);
 	struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
 
-	transport_destroy_device(&rphy->dev);
+	scsi_remove_target(dev);
 
-	scsi_remove_target(&rphy->dev);
+	transport_remove_device(dev);
+	device_del(dev);
+	transport_destroy_device(dev);
 
 	spin_lock(&sas_host->lock);
 	list_del(&rphy->list);
 	spin_unlock(&sas_host->lock);
 
-	transport_remove_device(dev);
-	device_del(dev);
-	transport_destroy_device(dev);
 	put_device(&parent->dev);
 }
 EXPORT_SYMBOL(sas_rphy_delete);
author	Linus Torvalds <torvalds@g5.osdl.org>	2005-10-03 15:07:10 (GMT)
committer	Linus Torvalds <torvalds@g5.osdl.org>	2005-10-03 15:07:10 (GMT)
commit	7d6322b4659216fff76619d3b4088eecbdfa46d5 (patch)
tree	19aa385d903fcc0f2b5d6d978dc83a87c2eca95f /drivers
parent	d6b9acc0c6c4a7c5d484d15271a5274656d0864f (diff)
parent	51c928c34fa7cff38df584ad01de988805877dba (diff)
download	linux-7d6322b4659216fff76619d3b4088eecbdfa46d5.tar.xz