Initial import

1 files changed, 586 insertions, 0 deletions

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
new file mode 100644
index 000000000..45db84ad3
--- /dev/null
+++ b/drivers/scsi/aacraid/comminit.c
@@ -0,0 +1,586 @@
+/*
+ *	Adaptec AAC series RAID controller driver
+ *	(c) Copyright 2001 Red Hat Inc.
+ *
+ * based on the old aacraid driver that is..
+ * Adaptec aacraid device driver for Linux.
+ *
+ * Copyright (c) 2000-2010 Adaptec, Inc.
+ *               2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Module Name:
+ *  comminit.c
+ *
+ * Abstract: This supports the initialization of the host adapter commuication interface.
+ *    This is a platform dependent module for the pci cyclone board.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/blkdev.h>
+#include <linux/completion.h>
+#include <linux/mm.h>
+#include <scsi/scsi_host.h>
+
+#include "aacraid.h"
+
+static void aac_define_int_mode(struct aac_dev *dev);
+
+struct aac_common aac_config = {
+	.irq_mod = 1
+};
+
+static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
+{
+	unsigned char *base;
+	unsigned long size, align;
+	const unsigned long fibsize = dev->max_fib_size;
+	const unsigned long printfbufsiz = 256;
+	unsigned long host_rrq_size = 0;
+	struct aac_init *init;
+	dma_addr_t phys;
+	unsigned long aac_max_hostphysmempages;
+
+	if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
+	    dev->comm_interface == AAC_COMM_MESSAGE_TYPE2)
+		host_rrq_size = (dev->scsi_host_ptr->can_queue
+			+ AAC_NUM_MGT_FIB) * sizeof(u32);
+	size = fibsize + sizeof(struct aac_init) + commsize +
+			commalign + printfbufsiz + host_rrq_size;
+ 
+	base = pci_alloc_consistent(dev->pdev, size, &phys);
+
+	if(base == NULL)
+	{
+		printk(KERN_ERR "aacraid: unable to create mapping.\n");
+		return 0;
+	}
+	dev->comm_addr = (void *)base;
+	dev->comm_phys = phys;
+	dev->comm_size = size;
+	
+	if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
+	    dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
+		dev->host_rrq = (u32 *)(base + fibsize);
+		dev->host_rrq_pa = phys + fibsize;
+		memset(dev->host_rrq, 0, host_rrq_size);
+	}
+
+	dev->init = (struct aac_init *)(base + fibsize + host_rrq_size);
+	dev->init_pa = phys + fibsize + host_rrq_size;
+
+	init = dev->init;
+
+	init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
+	if (dev->max_fib_size != sizeof(struct hw_fib))
+		init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
+	init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION);
+	init->fsrev = cpu_to_le32(dev->fsrev);
+
+	/*
+	 *	Adapter Fibs are the first thing allocated so that they
+	 *	start page aligned
+	 */
+	dev->aif_base_va = (struct hw_fib *)base;
+	
+	init->AdapterFibsVirtualAddress = 0;
+	init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
+	init->AdapterFibsSize = cpu_to_le32(fibsize);
+	init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
+	/*
+	 * number of 4k pages of host physical memory. The aacraid fw needs
+	 * this number to be less than 4gb worth of pages. New firmware doesn't
+	 * have any issues with the mapping system, but older Firmware did, and
+	 * had *troubles* dealing with the math overloading past 32 bits, thus
+	 * we must limit this field.
+	 */
+	aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12;
+	if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
+		init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages);
+	else
+		init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
+
+	init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
+		INITFLAGS_DRIVER_SUPPORTS_PM);
+	init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
+	init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
+	init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
+	init->MaxNumAif = cpu_to_le32(dev->max_num_aif);
+
+	if (dev->comm_interface == AAC_COMM_MESSAGE) {
+		init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
+		dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
+	} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
+		init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
+		init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
+			INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
+		init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
+		init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
+		dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n"));
+	} else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
+		init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
+		init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
+			INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
+		init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
+		init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
+		/* number of MSI-X */
+		init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix);
+		dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n"));
+	}
+
+	/*
+	 * Increment the base address by the amount already used
+	 */
+	base = base + fibsize + host_rrq_size + sizeof(struct aac_init);
+	phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
+		sizeof(struct aac_init));
+
+	/*
+	 *	Align the beginning of Headers to commalign
+	 */
+	align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
+	base = base + align;
+	phys = phys + align;
+	/*
+	 *	Fill in addresses of the Comm Area Headers and Queues
+	 */
+	*commaddr = base;
+	init->CommHeaderAddress = cpu_to_le32((u32)phys);
+	/*
+	 *	Increment the base address by the size of the CommArea
+	 */
+	base = base + commsize;
+	phys = phys + commsize;
+	/*
+	 *	 Place the Printf buffer area after the Fast I/O comm area.
+	 */
+	dev->printfbuf = (void *)base;
+	init->printfbuf = cpu_to_le32(phys);
+	init->printfbufsiz = cpu_to_le32(printfbufsiz);
+	memset(base, 0, printfbufsiz);
+	return 1;
+}
+    
+static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
+{
+	atomic_set(&q->numpending, 0);
+	q->dev = dev;
+	init_waitqueue_head(&q->cmdready);
+	INIT_LIST_HEAD(&q->cmdq);
+	init_waitqueue_head(&q->qfull);
+	spin_lock_init(&q->lockdata);
+	q->lock = &q->lockdata;
+	q->headers.producer = (__le32 *)mem;
+	q->headers.consumer = (__le32 *)(mem+1);
+	*(q->headers.producer) = cpu_to_le32(qsize);
+	*(q->headers.consumer) = cpu_to_le32(qsize);
+	q->entries = qsize;
+}
+
+/**
+ *	aac_send_shutdown		-	shutdown an adapter
+ *	@dev: Adapter to shutdown
+ *
+ *	This routine will send a VM_CloseAll (shutdown) request to the adapter.
+ */
+
+int aac_send_shutdown(struct aac_dev * dev)
+{
+	struct fib * fibctx;
+	struct aac_close *cmd;
+	int status;
+
+	fibctx = aac_fib_alloc(dev);
+	if (!fibctx)
+		return -ENOMEM;
+	aac_fib_init(fibctx);
+
+	cmd = (struct aac_close *) fib_data(fibctx);
+
+	cmd->command = cpu_to_le32(VM_CloseAll);
+	cmd->cid = cpu_to_le32(0xfffffffe);
+
+	status = aac_fib_send(ContainerCommand,
+			  fibctx,
+			  sizeof(struct aac_close),
+			  FsaNormal,
+			  -2 /* Timeout silently */, 1,
+			  NULL, NULL);
+
+	if (status >= 0)
+		aac_fib_complete(fibctx);
+	/* FIB should be freed only after getting the response from the F/W */
+	if (status != -ERESTARTSYS)
+		aac_fib_free(fibctx);
+	dev->adapter_shutdown = 1;
+	if ((dev->pdev->device == PMC_DEVICE_S7 ||
+	     dev->pdev->device == PMC_DEVICE_S8 ||
+	     dev->pdev->device == PMC_DEVICE_S9) &&
+	     dev->msi_enabled)
+		aac_src_access_devreg(dev, AAC_ENABLE_INTX);
+	return status;
+}
+
+/**
+ *	aac_comm_init	-	Initialise FSA data structures
+ *	@dev:	Adapter to initialise
+ *
+ *	Initializes the data structures that are required for the FSA commuication
+ *	interface to operate. 
+ *	Returns
+ *		1 - if we were able to init the commuication interface.
+ *		0 - If there were errors initing. This is a fatal error.
+ */
+ 
+static int aac_comm_init(struct aac_dev * dev)
+{
+	unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
+	unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
+	u32 *headers;
+	struct aac_entry * queues;
+	unsigned long size;
+	struct aac_queue_block * comm = dev->queues;
+	/*
+	 *	Now allocate and initialize the zone structures used as our 
+	 *	pool of FIB context records.  The size of the zone is based
+	 *	on the system memory size.  We also initialize the mutex used
+	 *	to protect the zone.
+	 */
+	spin_lock_init(&dev->fib_lock);
+
+	/*
+	 *	Allocate the physically contiguous space for the commuication
+	 *	queue headers. 
+	 */
+
+	size = hdrsize + queuesize;
+
+	if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
+		return -ENOMEM;
+
+	queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
+
+	/* Adapter to Host normal priority Command queue */ 
+	comm->queue[HostNormCmdQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
+	queues += HOST_NORM_CMD_ENTRIES;
+	headers += 2;
+
+	/* Adapter to Host high priority command queue */
+	comm->queue[HostHighCmdQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
+    
+	queues += HOST_HIGH_CMD_ENTRIES;
+	headers +=2;
+
+	/* Host to adapter normal priority command queue */
+	comm->queue[AdapNormCmdQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
+    
+	queues += ADAP_NORM_CMD_ENTRIES;
+	headers += 2;
+
+	/* host to adapter high priority command queue */
+	comm->queue[AdapHighCmdQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
+    
+	queues += ADAP_HIGH_CMD_ENTRIES;
+	headers += 2;
+
+	/* adapter to host normal priority response queue */
+	comm->queue[HostNormRespQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
+	queues += HOST_NORM_RESP_ENTRIES;
+	headers += 2;
+
+	/* adapter to host high priority response queue */
+	comm->queue[HostHighRespQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
+   
+	queues += HOST_HIGH_RESP_ENTRIES;
+	headers += 2;
+
+	/* host to adapter normal priority response queue */
+	comm->queue[AdapNormRespQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
+
+	queues += ADAP_NORM_RESP_ENTRIES;
+	headers += 2;
+	
+	/* host to adapter high priority response queue */ 
+	comm->queue[AdapHighRespQueue].base = queues;
+	aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
+
+	comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
+	comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
+	comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
+	comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
+
+	return 0;
+}
+
+struct aac_dev *aac_init_adapter(struct aac_dev *dev)
+{
+	u32 status[5];
+	struct Scsi_Host * host = dev->scsi_host_ptr;
+	extern int aac_sync_mode;
+
+	/*
+	 *	Check the preferred comm settings, defaults from template.
+	 */
+	dev->management_fib_count = 0;
+	spin_lock_init(&dev->manage_lock);
+	spin_lock_init(&dev->sync_lock);
+	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 sgentry))
+			/ sizeof(struct sgentry);
+	dev->comm_interface = AAC_COMM_PRODUCER;
+	dev->raw_io_interface = 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, status+3, NULL)) &&
+	 		(status[0] == 0x00000001)) {
+		dev->doorbell_mask = status[3];
+		if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
+			dev->raw_io_64 = 1;
+		dev->sync_mode = aac_sync_mode;
+		if (dev->a_ops.adapter_comm &&
+			(status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) {
+				dev->comm_interface = AAC_COMM_MESSAGE;
+				dev->raw_io_interface = 1;
+			if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) {
+				/* driver supports TYPE1 (Tupelo) */
+				dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
+			} else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) {
+				/* driver supports TYPE2 (Denali) */
+				dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
+			} else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) ||
+				  (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) {
+				/* driver doesn't TYPE3 and TYPE4 */
+				/* switch to sync. mode */
+				dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
+				dev->sync_mode = 1;
+			}
+		}
+		if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
+		    (status[2] > dev->base_size)) {
+			aac_adapter_ioremap(dev, 0);
+			dev->base_size = status[2];
+			if (aac_adapter_ioremap(dev, status[2])) {
+				/* remap failed, go back ... */
+				dev->comm_interface = AAC_COMM_PRODUCER;
+				if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
+					printk(KERN_WARNING
+					  "aacraid: unable to map adapter.\n");
+					return NULL;
+				}
+			}
+		}
+	}
+	dev->max_msix = 0;
+	dev->msi_enabled = 0;
+	dev->adapter_shutdown = 0;
+	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))
+	 && (status[0] == 0x00000001)) {
+		/*
+		 *	status[1] >> 16		maximum command size in KB
+		 *	status[1] & 0xFFFF	maximum FIB size
+		 *	status[2] >> 16		maximum SG elements to driver
+		 *	status[2] & 0xFFFF	maximum SG elements from driver
+		 *	status[3] & 0xFFFF	maximum number FIBs outstanding
+		 */
+		host->max_sectors = (status[1] >> 16) << 1;
+		/* Multiple of 32 for PMC */
+		dev->max_fib_size = status[1] & 0xFFE0;
+		host->sg_tablesize = status[2] >> 16;
+		dev->sg_tablesize = status[2] & 0xFFFF;
+		if (dev->pdev->device == PMC_DEVICE_S7 ||
+		    dev->pdev->device == PMC_DEVICE_S8 ||
+		    dev->pdev->device == PMC_DEVICE_S9)
+			host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) :
+				(status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB;
+		else
+			host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
+		dev->max_num_aif = status[4] & 0xFFFF;
+		/*
+		 *	NOTE:
+		 *	All these overrides are based on a fixed internal
+		 *	knowledge and understanding of existing adapters,
+		 *	acbsize should be set with caution.
+		 */
+		if (acbsize == 512) {
+			host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
+			dev->max_fib_size = 512;
+			dev->sg_tablesize = host->sg_tablesize
+			  = (512 - sizeof(struct aac_fibhdr)
+			    - 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;
+			dev->max_fib_size = 2048;
+			host->sg_tablesize = 65;
+			dev->sg_tablesize = 81;
+			host->can_queue = 512 - AAC_NUM_MGT_FIB;
+		} else if (acbsize == 4096) {
+			host->max_sectors = 1024;
+			dev->max_fib_size = 4096;
+			host->sg_tablesize = 129;
+			dev->sg_tablesize = 166;
+			host->can_queue = 256 - AAC_NUM_MGT_FIB;
+		} else if (acbsize == 8192) {
+			host->max_sectors = 2048;
+			dev->max_fib_size = 8192;
+			host->sg_tablesize = 257;
+			dev->sg_tablesize = 337;
+			host->can_queue = 128 - AAC_NUM_MGT_FIB;
+		} else if (acbsize > 0) {
+			printk("Illegal acbsize=%d ignored\n", acbsize);
+		}
+	}
+	{
+
+		if (numacb > 0) {
+			if (numacb < host->can_queue)
+				host->can_queue = numacb;
+			else
+				printk("numacb=%d ignored\n", numacb);
+		}
+	}
+
+	if (host->can_queue > AAC_NUM_IO_FIB)
+		host->can_queue = AAC_NUM_IO_FIB;
+
+	if (dev->pdev->device == PMC_DEVICE_S6 ||
+	    dev->pdev->device == PMC_DEVICE_S7 ||
+	    dev->pdev->device == PMC_DEVICE_S8 ||
+	    dev->pdev->device == PMC_DEVICE_S9)
+		aac_define_int_mode(dev);
+	/*
+	 *	Ok now init the communication subsystem
+	 */
+
+	dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
+	if (dev->queues == NULL) {
+		printk(KERN_ERR "Error could not allocate comm region.\n");
+		return NULL;
+	}
+
+	if (aac_comm_init(dev)<0){
+		kfree(dev->queues);
+		return NULL;
+	}
+	/*
+	 *	Initialize the list of fibs
+	 */
+	if (aac_fib_setup(dev) < 0) {
+		kfree(dev->queues);
+		return NULL;
+	}
+		
+	INIT_LIST_HEAD(&dev->fib_list);
+	INIT_LIST_HEAD(&dev->sync_fib_list);
+
+	return dev;
+}
+
+static void aac_define_int_mode(struct aac_dev *dev)
+{
+
+	int i, msi_count;
+
+	msi_count = i = 0;
+	/* max. vectors from GET_COMM_PREFERRED_SETTINGS */
+	if (dev->max_msix == 0 ||
+	    dev->pdev->device == PMC_DEVICE_S6 ||
+	    dev->sync_mode) {
+		dev->max_msix = 1;
+		dev->vector_cap =
+			dev->scsi_host_ptr->can_queue +
+			AAC_NUM_MGT_FIB;
+		return;
+	}
+
+	msi_count = min(dev->max_msix,
+		(unsigned int)num_online_cpus());
+
+	dev->max_msix = msi_count;
+
+	if (msi_count > AAC_MAX_MSIX)
+		msi_count = AAC_MAX_MSIX;
+
+	for (i = 0; i < msi_count; i++)
+		dev->msixentry[i].entry = i;
+
+	if (msi_count > 1 &&
+	    pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
+		i = pci_enable_msix(dev->pdev,
+				    dev->msixentry,
+				    msi_count);
+		 /* Check how many MSIX vectors are allocated */
+		if (i >= 0) {
+			dev->msi_enabled = 1;
+			if (i) {
+				msi_count = i;
+				if (pci_enable_msix(dev->pdev,
+				    dev->msixentry,
+				    msi_count)) {
+					dev->msi_enabled = 0;
+					printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n",
+							dev->name, dev->id, i);
+				}
+			}
+		} else {
+			dev->msi_enabled = 0;
+			printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n",
+					dev->name, dev->id, i);
+		}
+	}
+
+	if (!dev->msi_enabled) {
+		msi_count = 1;
+		i = pci_enable_msi(dev->pdev);
+
+		if (!i) {
+			dev->msi_enabled = 1;
+			dev->msi = 1;
+		} else {
+			printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n",
+					dev->name, dev->id, i);
+		}
+	}
+
+	if (!dev->msi_enabled)
+		dev->max_msix = msi_count = 1;
+	else {
+		if (dev->max_msix > msi_count)
+			dev->max_msix = msi_count;
+	}
+	dev->vector_cap =
+		(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) /
+		msi_count;
+}