[SCSI] hptiop: add more adapter models and other fixes

Most code changes were made to support adapters based on Marvell IOP, plus some
other fixes.

- add more PCI device IDs
- support for adapters based on Marvell IOP
- fix a result code translation error on big-endian systems
- fix resource releasing bug when scsi_host_alloc() fail in hptiop_probe()
- update scsi_cmnd.resid when finishing a request
- correct some coding style issues

[akpm@linux-foundation.org: type fixes]
Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

4 files changed, 576 insertions, 175 deletions

diff --git a/Documentation/scsi/hptiop.txt b/Documentation/scsi/hptiop.txt
index d28a31247d4..a6eb4add1be 100644
--- a/Documentation/scsi/hptiop.txt
+++ b/Documentation/scsi/hptiop.txt
@@ -1,9 +1,9 @@
-HIGHPOINT ROCKETRAID 3xxx RAID DRIVER (hptiop)
+HIGHPOINT ROCKETRAID 3xxx/4xxx ADAPTER DRIVER (hptiop)
 
 Controller Register Map
 -------------------------
 
-The controller IOP is accessed via PCI BAR0.
+For Intel IOP based adapters, the controller IOP is accessed via PCI BAR0:
 
      BAR0 offset    Register
             0x10    Inbound Message Register 0
@@ -18,6 +18,24 @@ The controller IOP is accessed via PCI BAR0.
             0x40    Inbound Queue Port
             0x44    Outbound Queue Port
 
+For Marvell IOP based adapters, the IOP is accessed via PCI BAR0 and BAR1:
+
+     BAR0 offset    Register
+         0x20400    Inbound Doorbell Register
+         0x20404    Inbound Interrupt Mask Register
+         0x20408    Outbound Doorbell Register
+         0x2040C    Outbound Interrupt Mask Register
+
+     BAR1 offset    Register
+             0x0    Inbound Queue Head Pointer
+             0x4    Inbound Queue Tail Pointer
+             0x8    Outbound Queue Head Pointer
+             0xC    Outbound Queue Tail Pointer
+            0x10    Inbound Message Register
+            0x14    Outbound Message Register
+     0x40-0x1040    Inbound Queue
+   0x1040-0x2040    Outbound Queue
+
 
 I/O Request Workflow
 ----------------------
@@ -73,15 +91,9 @@ The driver exposes following sysfs attributes:
      driver-version        R     driver version string
      firmware-version      R     firmware version string
 
-The driver registers char device "hptiop" to communicate with HighPoint RAID
-management software. Its ioctl routine acts as a general binary interface 
-between the IOP firmware and HighPoint RAID management software. New management
-functions can be implemented in application/firmware without modification
-in driver code.
-
 
 -----------------------------------------------------------------------------
-Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.
+Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
 
   This file is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index becbb09d4c9..e397599d54e 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -573,10 +573,10 @@ config SCSI_ARCMSR_AER
 source "drivers/scsi/megaraid/Kconfig.megaraid"
 
 config SCSI_HPTIOP
-	tristate "HighPoint RocketRAID 3xxx Controller support"
+	tristate "HighPoint RocketRAID 3xxx/4xxx Controller support"
 	depends on SCSI && PCI
 	help
-	  This option enables support for HighPoint RocketRAID 3xxx
+	  This option enables support for HighPoint RocketRAID 3xxx/4xxx
 	  controllers.
 
 	  To compile this driver as a module, choose M here; the module
diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c
index 0844331abb8..df1a76438e2 100644
--- a/drivers/scsi/hptiop.c
+++ b/drivers/scsi/hptiop.c
@@ -1,5 +1,5 @@
 /*
- * HighPoint RR3xxx controller driver for Linux
+ * HighPoint RR3xxx/4xxx controller driver for Linux
  * Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -38,80 +38,84 @@
 #include "hptiop.h"
 
 MODULE_AUTHOR("HighPoint Technologies, Inc.");
-MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
+MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx/4xxx Controller Driver");
 
 static char driver_name[] = "hptiop";
-static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
-static const char driver_ver[] = "v1.2 (070830)";
-
-static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
-static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
+static const char driver_name_long[] = "RocketRAID 3xxx/4xxx Controller driver";
+static const char driver_ver[] = "v1.3 (071203)";
+
+static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec);
+static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
+				struct hpt_iop_request_scsi_command *req);
+static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 tag);
+static void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag);
 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
 
-static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
-{
-	readl(&iop->outbound_intstatus);
-}
-
-static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
+static int iop_wait_ready_itl(struct hptiop_hba *hba, u32 millisec)
 {
 	u32 req = 0;
 	int i;
 
 	for (i = 0; i < millisec; i++) {
-		req = readl(&iop->inbound_queue);
+		req = readl(&hba->u.itl.iop->inbound_queue);
 		if (req != IOPMU_QUEUE_EMPTY)
 			break;
 		msleep(1);
 	}
 
 	if (req != IOPMU_QUEUE_EMPTY) {
-		writel(req, &iop->outbound_queue);
-		hptiop_pci_posting_flush(iop);
+		writel(req, &hba->u.itl.iop->outbound_queue);
+		readl(&hba->u.itl.iop->outbound_intstatus);
 		return 0;
 	}
 
 	return -1;
 }
 
-static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
+static int iop_wait_ready_mv(struct hptiop_hba *hba, u32 millisec)
+{
+	return iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_NOP, millisec);
+}
+
+static void hptiop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 {
 	if (tag & IOPMU_QUEUE_ADDR_HOST_BIT)
-		return hptiop_host_request_callback(hba,
+		hptiop_host_request_callback_itl(hba,
 				tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
 	else
-		return hptiop_iop_request_callback(hba, tag);
+		hptiop_iop_request_callback_itl(hba, tag);
 }
 
-static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
+static void hptiop_drain_outbound_queue_itl(struct hptiop_hba *hba)
 {
 	u32 req;
 
-	while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
+	while ((req = readl(&hba->u.itl.iop->outbound_queue)) !=
+						IOPMU_QUEUE_EMPTY) {
 
 		if (req & IOPMU_QUEUE_MASK_HOST_BITS)
-			hptiop_request_callback(hba, req);
+			hptiop_request_callback_itl(hba, req);
 		else {
 			struct hpt_iop_request_header __iomem * p;
 
 			p = (struct hpt_iop_request_header __iomem *)
-				((char __iomem *)hba->iop + req);
+				((char __iomem *)hba->u.itl.iop + req);
 
 			if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
 				if (readl(&p->context))
-					hptiop_request_callback(hba, req);
+					hptiop_request_callback_itl(hba, req);
 				else
 					writel(1, &p->context);
 			}
 			else
-				hptiop_request_callback(hba, req);
+				hptiop_request_callback_itl(hba, req);
 		}
 	}
 }
 
-static int __iop_intr(struct hptiop_hba *hba)
+static int iop_intr_itl(struct hptiop_hba *hba)
 {
-	struct hpt_iopmu __iomem *iop = hba->iop;
+	struct hpt_iopmu_itl __iomem *iop = hba->u.itl.iop;
 	u32 status;
 	int ret = 0;
 
@@ -119,6 +123,7 @@ static int __iop_intr(struct hptiop_hba *hba)
 
 	if (status & IOPMU_OUTBOUND_INT_MSG0) {
 		u32 msg = readl(&iop->outbound_msgaddr0);
+
 		dprintk("received outbound msg %x\n", msg);
 		writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
 		hptiop_message_callback(hba, msg);
@@ -126,31 +131,115 @@ static int __iop_intr(struct hptiop_hba *hba)
 	}
 
 	if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
-		hptiop_drain_outbound_queue(hba);
+		hptiop_drain_outbound_queue_itl(hba);
+		ret = 1;
+	}
+
+	return ret;
+}
+
+static u64 mv_outbound_read(struct hpt_iopmu_mv __iomem *mu)
+{
+	u32 outbound_tail = readl(&mu->outbound_tail);
+	u32 outbound_head = readl(&mu->outbound_head);
+
+	if (outbound_tail != outbound_head) {
+		u64 p;
+
+		memcpy_fromio(&p, &mu->outbound_q[mu->outbound_tail], 8);
+		outbound_tail++;
+
+		if (outbound_tail == MVIOP_QUEUE_LEN)
+			outbound_tail = 0;
+		writel(outbound_tail, &mu->outbound_tail);
+		return p;
+	} else
+		return 0;
+}
+
+static void mv_inbound_write(u64 p, struct hptiop_hba *hba)
+{
+	u32 inbound_head = readl(&hba->u.mv.mu->inbound_head);
+	u32 head = inbound_head + 1;
+
+	if (head == MVIOP_QUEUE_LEN)
+		head = 0;
+
+	memcpy_toio(&hba->u.mv.mu->inbound_q[inbound_head], &p, 8);
+	writel(head, &hba->u.mv.mu->inbound_head);
+	writel(MVIOP_MU_INBOUND_INT_POSTQUEUE,
+			&hba->u.mv.regs->inbound_doorbell);
+}
+
+static void hptiop_request_callback_mv(struct hptiop_hba *hba, u64 tag)
+{
+	u32 req_type = (tag >> 5) & 0x7;
+	struct hpt_iop_request_scsi_command *req;
+
+	dprintk("hptiop_request_callback_mv: tag=%llx\n", tag);
+
+	BUG_ON((tag & MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT) == 0);
+
+	switch (req_type) {
+	case IOP_REQUEST_TYPE_GET_CONFIG:
+	case IOP_REQUEST_TYPE_SET_CONFIG:
+		hba->msg_done = 1;
+		break;
+
+	case IOP_REQUEST_TYPE_SCSI_COMMAND:
+		req = hba->reqs[tag >> 8].req_virt;
+		if (likely(tag & MVIOP_MU_QUEUE_REQUEST_RESULT_BIT))
+			req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
+
+		hptiop_finish_scsi_req(hba, tag>>8, req);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static int iop_intr_mv(struct hptiop_hba *hba)
+{
+	u32 status;
+	int ret = 0;
+
+	status = readl(&hba->u.mv.regs->outbound_doorbell);
+	writel(~status, &hba->u.mv.regs->outbound_doorbell);
+
+	if (status & MVIOP_MU_OUTBOUND_INT_MSG) {
+		u32 msg;
+		msg = readl(&hba->u.mv.mu->outbound_msg);
+		dprintk("received outbound msg %x\n", msg);
+		hptiop_message_callback(hba, msg);
+		ret = 1;
+	}
+
+	if (status & MVIOP_MU_OUTBOUND_INT_POSTQUEUE) {
+		u64 tag;
+
+		while ((tag = mv_outbound_read(hba->u.mv.mu)))
+			hptiop_request_callback_mv(hba, tag);
 		ret = 1;
 	}
 
 	return ret;
 }
 
-static int iop_send_sync_request(struct hptiop_hba *hba,
+static int iop_send_sync_request_itl(struct hptiop_hba *hba,
 					void __iomem *_req, u32 millisec)
 {
 	struct hpt_iop_request_header __iomem *req = _req;
 	u32 i;
 
-	writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
-			&req->flags);
-
+	writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST, &req->flags);
 	writel(0, &req->context);
-
-	writel((unsigned long)req - (unsigned long)hba->iop,
-			&hba->iop->inbound_queue);
-
-	hptiop_pci_posting_flush(hba->iop);
+	writel((unsigned long)req - (unsigned long)hba->u.itl.iop,
+			&hba->u.itl.iop->inbound_queue);
+	readl(&hba->u.itl.iop->outbound_intstatus);
 
 	for (i = 0; i < millisec; i++) {
-		__iop_intr(hba);
+		iop_intr_itl(hba);
 		if (readl(&req->context))
 			return 0;
 		msleep(1);
@@ -159,19 +248,49 @@ static int iop_send_sync_request(struct hptiop_hba *hba,
 	return -1;
 }
 
-static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
+static int iop_send_sync_request_mv(struct hptiop_hba *hba,
+					u32 size_bits, u32 millisec)
 {
+	struct hpt_iop_request_header *reqhdr = hba->u.mv.internal_req;
 	u32 i;
 
 	hba->msg_done = 0;
+	reqhdr->flags |= cpu_to_le32(IOP_REQUEST_FLAG_SYNC_REQUEST);
+	mv_inbound_write(hba->u.mv.internal_req_phy |
+			MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bits, hba);
+
+	for (i = 0; i < millisec; i++) {
+		iop_intr_mv(hba);
+		if (hba->msg_done)
+			return 0;
+		msleep(1);
+	}
+	return -1;
+}
+
+static void hptiop_post_msg_itl(struct hptiop_hba *hba, u32 msg)
+{
+	writel(msg, &hba->u.itl.iop->inbound_msgaddr0);
+	readl(&hba->u.itl.iop->outbound_intstatus);
+}
+
+static void hptiop_post_msg_mv(struct hptiop_hba *hba, u32 msg)
+{
+	writel(msg, &hba->u.mv.mu->inbound_msg);
+	writel(MVIOP_MU_INBOUND_INT_MSG, &hba->u.mv.regs->inbound_doorbell);
+	readl(&hba->u.mv.regs->inbound_doorbell);
+}
 
-	writel(msg, &hba->iop->inbound_msgaddr0);
+static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
+{
+	u32 i;
 
-	hptiop_pci_posting_flush(hba->iop);
+	hba->msg_done = 0;
+	hba->ops->post_msg(hba, msg);
 
 	for (i = 0; i < millisec; i++) {
 		spin_lock_irq(hba->host->host_lock);
-		__iop_intr(hba);
+		hba->ops->iop_intr(hba);
 		spin_unlock_irq(hba->host->host_lock);
 		if (hba->msg_done)
 			break;
@@ -181,46 +300,67 @@ static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
 	return hba->msg_done? 0 : -1;
 }
 
-static int iop_get_config(struct hptiop_hba *hba,
+static int iop_get_config_itl(struct hptiop_hba *hba,
 				struct hpt_iop_request_get_config *config)
 {
 	u32 req32;
 	struct hpt_iop_request_get_config __iomem *req;
 
-	req32 = readl(&hba->iop->inbound_queue);
+	req32 = readl(&hba->u.itl.iop->inbound_queue);
 	if (req32 == IOPMU_QUEUE_EMPTY)
 		return -1;
 
 	req = (struct hpt_iop_request_get_config __iomem *)
-			((unsigned long)hba->iop + req32);
+			((unsigned long)hba->u.itl.iop + req32);
 
 	writel(0, &req->header.flags);
 	writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
 	writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
 	writel(IOP_RESULT_PENDING, &req->header.result);
 
-	if (iop_send_sync_request(hba, req, 20000)) {
+	if (iop_send_sync_request_itl(hba, req, 20000)) {
 		dprintk("Get config send cmd failed\n");
 		return -1;
 	}
 
 	memcpy_fromio(config, req, sizeof(*config));
-	writel(req32, &hba->iop->outbound_queue);
+	writel(req32, &hba->u.itl.iop->outbound_queue);
+	return 0;
+}
+
+static int iop_get_config_mv(struct hptiop_hba *hba,
+				struct hpt_iop_request_get_config *config)
+{
+	struct hpt_iop_request_get_config *req = hba->u.mv.internal_req;
+
+	req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
+	req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_GET_CONFIG);
+	req->header.size =
+		cpu_to_le32(sizeof(struct hpt_iop_request_get_config));
+	req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
+	req->header.context = cpu_to_le64(IOP_REQUEST_TYPE_GET_CONFIG<<5);
+
+	if (iop_send_sync_request_mv(hba, 0, 20000)) {
+		dprintk("Get config send cmd failed\n");
+		return -1;
+	}
+
+	memcpy(config, req, sizeof(struct hpt_iop_request_get_config));
 	return 0;
 }
 
-static int iop_set_config(struct hptiop_hba *hba,
+static int iop_set_config_itl(struct hptiop_hba *hba,
 				struct hpt_iop_request_set_config *config)
 {
 	u32 req32;
 	struct hpt_iop_request_set_config __iomem *req;
 
-	req32 = readl(&hba->iop->inbound_queue);
+	req32 = readl(&hba->u.itl.iop->inbound_queue);
 	if (req32 == IOPMU_QUEUE_EMPTY)
 		return -1;
 
 	req = (struct hpt_iop_request_set_config __iomem *)
-			((unsigned long)hba->iop + req32);
+			((unsigned long)hba->u.itl.iop + req32);
 
 	memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
 		(u8 *)config + sizeof(struct hpt_iop_request_header),
@@ -232,22 +372,52 @@ static int iop_set_config(struct hptiop_hba *hba,
 	writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
 	writel(IOP_RESULT_PENDING, &req->header.result);
 
-	if (iop_send_sync_request(hba, req, 20000)) {
+	if (iop_send_sync_request_itl(hba, req, 20000)) {
 		dprintk("Set config send cmd failed\n");
 		return -1;
 	}
 
-	writel(req32, &hba->iop->outbound_queue);
+	writel(req32, &hba->u.itl.iop->outbound_queue);
 	return 0;
 }
 
-static int hptiop_initialize_iop(struct hptiop_hba *hba)
+static int iop_set_config_mv(struct hptiop_hba *hba,
+				struct hpt_iop_request_set_config *config)
 {
-	struct hpt_iopmu __iomem *iop = hba->iop;
+	struct hpt_iop_request_set_config *req = hba->u.mv.internal_req;
 
-	/* enable interrupts */
+	memcpy(req, config, sizeof(struct hpt_iop_request_set_config));
+	req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
+	req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SET_CONFIG);
+	req->header.size =
+		cpu_to_le32(sizeof(struct hpt_iop_request_set_config));
+	req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
+	req->header.context = cpu_to_le64(IOP_REQUEST_TYPE_SET_CONFIG<<5);
+
+	if (iop_send_sync_request_mv(hba, 0, 20000)) {
+		dprintk("Set config send cmd failed\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static void hptiop_enable_intr_itl(struct hptiop_hba *hba)
+{
 	writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
-			&iop->outbound_intmask);
+		&hba->u.itl.iop->outbound_intmask);
+}
+
+static void hptiop_enable_intr_mv(struct hptiop_hba *hba)
+{
+	writel(MVIOP_MU_OUTBOUND_INT_POSTQUEUE | MVIOP_MU_OUTBOUND_INT_MSG,
+		&hba->u.mv.regs->outbound_intmask);
+}
+
+static int hptiop_initialize_iop(struct hptiop_hba *hba)
+{
+	/* enable interrupts */
+	hba->ops->enable_intr(hba);
 
 	hba->initialized = 1;
 
@@ -261,37 +431,74 @@ static int hptiop_initialize_iop(struct hptiop_hba *hba)
 	return 0;
 }
 
-static int hptiop_map_pci_bar(struct hptiop_hba *hba)
+static void __iomem *hptiop_map_pci_bar(struct hptiop_hba *hba, int index)
 {
 	u32 mem_base_phy, length;
 	void __iomem *mem_base_virt;
+
 	struct pci_dev *pcidev = hba->pcidev;
 
-	if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
+
+	if (!(pci_resource_flags(pcidev, index) & IORESOURCE_MEM)) {
 		printk(KERN_ERR "scsi%d: pci resource invalid\n",
 				hba->host->host_no);
-		return -1;
+		return 0;
 	}
 
-	mem_base_phy = pci_resource_start(pcidev, 0);
-	length = pci_resource_len(pcidev, 0);
+	mem_base_phy = pci_resource_start(pcidev, index);
+	length = pci_resource_len(pcidev, index);
 	mem_base_virt = ioremap(mem_base_phy, length);
 
 	if (!mem_base_virt) {
 		printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
 				hba->host->host_no);
+		return 0;
+	}
+	return mem_base_virt;
+}
+
+static int hptiop_map_pci_bar_itl(struct hptiop_hba *hba)
+{
+	hba->u.itl.iop = hptiop_map_pci_bar(hba, 0);
+	if (hba->u.itl.iop)
+		return 0;
+	else
+		return -1;
+}
+
+static void hptiop_unmap_pci_bar_itl(struct hptiop_hba *hba)
+{
+	iounmap(hba->u.itl.iop);
+}
+
+static int hptiop_map_pci_bar_mv(struct hptiop_hba *hba)
+{
+	hba->u.mv.regs = hptiop_map_pci_bar(hba, 0);
+	if (hba->u.mv.regs == 0)
+		return -1;
+
+	hba->u.mv.mu = hptiop_map_pci_bar(hba, 2);
+	if (hba->u.mv.mu == 0) {
+		iounmap(hba->u.mv.regs);
 		return -1;
 	}
 
-	hba->iop = mem_base_virt;
-	dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
 	return 0;
 }
 
+static void hptiop_unmap_pci_bar_mv(struct hptiop_hba *hba)
+{
+	iounmap(hba->u.mv.regs);
+	iounmap(hba->u.mv.mu);
+}
+
 static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
 {
 	dprintk("iop message 0x%x\n", msg);
 
+	if (msg == IOPMU_INBOUND_MSG0_NOP)
+		hba->msg_done = 1;
+
 	if (!hba->initialized)
 		return;
 
@@ -303,7 +510,7 @@ static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
 		hba->msg_done = 1;
 }
 
-static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
+static struct hptiop_request *get_req(struct hptiop_hba *hba)
 {
 	struct hptiop_request *ret;
 
@@ -316,30 +523,19 @@ static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
 	return ret;
 }
 
-static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
+static void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
 {
 	dprintk("free_req(%d, %p)\n", req->index, req);
 	req->next = hba->req_list;
 	hba->req_list = req;
 }
 
-static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
+static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag,
+				struct hpt_iop_request_scsi_command *req)
 {
-	struct hpt_iop_request_scsi_command *req;
 	struct scsi_cmnd *scp;
-	u32 tag;
-
-	if (hba->iopintf_v2) {
-		tag = _tag & ~ IOPMU_QUEUE_REQUEST_RESULT_BIT;
-		req = hba->reqs[tag].req_virt;
-		if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
-			req->header.result = IOP_RESULT_SUCCESS;
-	} else {
-		tag = _tag;
-		req = hba->reqs[tag].req_virt;
-	}
 
-	dprintk("hptiop_host_request_callback: req=%p, type=%d, "
+	dprintk("hptiop_finish_scsi_req: req=%p, type=%d, "
 			"result=%d, context=0x%x tag=%d\n",
 			req, req->header.type, req->header.result,
 			req->header.context, tag);
@@ -354,6 +550,8 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
 
 	switch (le32_to_cpu(req->header.result)) {
 	case IOP_RESULT_SUCCESS:
+		scsi_set_resid(scp,
+			scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
 		scp->result = (DID_OK<<16);
 		break;
 	case IOP_RESULT_BAD_TARGET:
@@ -371,12 +569,12 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
 	case IOP_RESULT_INVALID_REQUEST:
 		scp->result = (DID_ABORT<<16);
 		break;
-	case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
+	case IOP_RESULT_CHECK_CONDITION:
+		scsi_set_resid(scp,
+			scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length));
 		scp->result = SAM_STAT_CHECK_CONDITION;
-		memset(&scp->sense_buffer,
-				0, sizeof(scp->sense_buffer));
 		memcpy(&scp->sense_buffer, &req->sg_list,
-				min(sizeof(scp->sense_buffer),
+				min_t(size_t, sizeof(scp->sense_buffer),
 					le32_to_cpu(req->dataxfer_length)));
 		break;
 
@@ -391,15 +589,33 @@ static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 _tag)
 	free_req(hba, &hba->reqs[tag]);
 }
 
-void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
+static void hptiop_host_request_callback_itl(struct hptiop_hba *hba, u32 _tag)
+{
+	struct hpt_iop_request_scsi_command *req;
+	u32 tag;
+
+	if (hba->iopintf_v2) {
+		tag = _tag & ~IOPMU_QUEUE_REQUEST_RESULT_BIT;
+		req = hba->reqs[tag].req_virt;
+		if (likely(_tag & IOPMU_QUEUE_REQUEST_RESULT_BIT))
+			req->header.result = cpu_to_le32(IOP_RESULT_SUCCESS);
+	} else {
+		tag = _tag;
+		req = hba->reqs[tag].req_virt;
+	}
+
+	hptiop_finish_scsi_req(hba, tag, req);
+}
+
+void hptiop_iop_request_callback_itl(struct hptiop_hba *hba, u32 tag)
 {
 	struct hpt_iop_request_header __iomem *req;
 	struct hpt_iop_request_ioctl_command __iomem *p;
 	struct hpt_ioctl_k *arg;
 
 	req = (struct hpt_iop_request_header __iomem *)
-			((unsigned long)hba->iop + tag);
-	dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
+			((unsigned long)hba->u.itl.iop + tag);
+	dprintk("hptiop_iop_request_callback_itl: req=%p, type=%d, "
 			"result=%d, context=0x%x tag=%d\n",
 			req, readl(&req->type), readl(&req->result),
 			readl(&req->context), tag);
@@ -427,7 +643,7 @@ void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
 		arg->result = HPT_IOCTL_RESULT_FAILED;
 
 	arg->done(arg);
-	writel(tag, &hba->iop->outbound_queue);
+	writel(tag, &hba->u.itl.iop->outbound_queue);
 }
 
 static irqreturn_t hptiop_intr(int irq, void *dev_id)
@@ -437,7 +653,7 @@ static irqreturn_t hptiop_intr(int irq, void *dev_id)
 	unsigned long flags;
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
-	handled = __iop_intr(hba);
+	handled = hba->ops->iop_intr(hba);
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
 	return handled;
@@ -469,6 +685,57 @@ static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
 	return HPT_SCP(scp)->sgcnt;
 }
 
+static void hptiop_post_req_itl(struct hptiop_hba *hba,
+					struct hptiop_request *_req)
+{
+	struct hpt_iop_request_header *reqhdr = _req->req_virt;
+
+	reqhdr->context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
+							(u32)_req->index);
+	reqhdr->context_hi32 = 0;
+
+	if (hba->iopintf_v2) {
+		u32 size, size_bits;
+
+		size = le32_to_cpu(reqhdr->size);
+		if (size < 256)
+			size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
+		else if (size < 512)
+			size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
+		else
+			size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
+						IOPMU_QUEUE_ADDR_HOST_BIT;
+		writel(_req->req_shifted_phy | size_bits,
+			&hba->u.itl.iop->inbound_queue);
+	} else
+		writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
+					&hba->u.itl.iop->inbound_queue);
+}
+
+static void hptiop_post_req_mv(struct hptiop_hba *hba,
+					struct hptiop_request *_req)
+{
+	struct hpt_iop_request_header *reqhdr = _req->req_virt;
+	u32 size, size_bit;
+
+	reqhdr->context = cpu_to_le32(_req->index<<8 |
+					IOP_REQUEST_TYPE_SCSI_COMMAND<<5);
+	reqhdr->context_hi32 = 0;
+	size = le32_to_cpu(reqhdr->size);
+
+	if (size <= 256)
+		size_bit = 0;
+	else if (size <= 256*2)
+		size_bit = 1;
+	else if (size <= 256*3)
+		size_bit = 2;
+	else
+		size_bit = 3;
+
+	mv_inbound_write((_req->req_shifted_phy << 5) |
+		MVIOP_MU_QUEUE_ADDR_HOST_BIT | size_bit, hba);
+}
+
 static int hptiop_queuecommand(struct scsi_cmnd *scp,
 				void (*done)(struct scsi_cmnd *))
 {
@@ -518,9 +785,6 @@ static int hptiop_queuecommand(struct scsi_cmnd *scp,
 	req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
 	req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
 	req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
-	req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
-							(u32)_req->index);
-	req->header.context_hi32 = 0;
 	req->dataxfer_length = cpu_to_le32(scsi_bufflen(scp));
 	req->channel = scp->device->channel;
 	req->target = scp->device->id;
@@ -531,21 +795,7 @@ static int hptiop_queuecommand(struct scsi_cmnd *scp,
 				 + sg_count * sizeof(struct hpt_iopsg));
 
 	memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
-
-	if (hba->iopintf_v2) {
-		u32 size_bits;
-		if (req->header.size < 256)
-			size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT;
-		else if (req->header.size < 512)
-			size_bits = IOPMU_QUEUE_ADDR_HOST_BIT;
-		else
-			size_bits = IOPMU_QUEUE_REQUEST_SIZE_BIT |
-						IOPMU_QUEUE_ADDR_HOST_BIT;
-		writel(_req->req_shifted_phy | size_bits, &hba->iop->inbound_queue);
-	} else
-		writel(_req->req_shifted_phy | IOPMU_QUEUE_ADDR_HOST_BIT,
-					&hba->iop->inbound_queue);
-
+	hba->ops->post_req(hba, _req);
 	return 0;
 
 cmd_done:
@@ -563,9 +813,7 @@ static int hptiop_reset_hba(struct hptiop_hba *hba)
 {
 	if (atomic_xchg(&hba->resetting, 1) == 0) {
 		atomic_inc(&hba->reset_count);
-		writel(IOPMU_INBOUND_MSG0_RESET,
-				&hba->iop->inbound_msgaddr0);
-		hptiop_pci_posting_flush(hba->iop);
+		hba->ops->post_msg(hba, IOPMU_INBOUND_MSG0_RESET);
 	}
 
 	wait_event_timeout(hba->reset_wq,
@@ -601,8 +849,10 @@ static int hptiop_reset(struct scsi_cmnd *scp)
 static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
 						int queue_depth)
 {
-	if(queue_depth > 256)
-		queue_depth = 256;
+	struct hptiop_hba *hba = (struct hptiop_hba *)sdev->host->hostdata;
+
+	if (queue_depth > hba->max_requests)
+		queue_depth = hba->max_requests;
 	scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
 	return queue_depth;
 }
@@ -663,6 +913,26 @@ static struct scsi_host_template driver_template = {
 	.change_queue_depth         = hptiop_adjust_disk_queue_depth,
 };
 
+static int hptiop_internal_memalloc_mv(struct hptiop_hba *hba)
+{
+	hba->u.mv.internal_req = dma_alloc_coherent(&hba->pcidev->dev,
+			0x800, &hba->u.mv.internal_req_phy, GFP_KERNEL);
+	if (hba->u.mv.internal_req)
+		return 0;
+	else
+		return -1;
+}
+
+static int hptiop_internal_memfree_mv(struct hptiop_hba *hba)
+{
+	if (hba->u.mv.internal_req) {
+		dma_free_coherent(&hba->pcidev->dev, 0x800,
+			hba->u.mv.internal_req, hba->u.mv.internal_req_phy);
+		return 0;
+	} else
+		return -1;
+}
+
 static int __devinit hptiop_probe(struct pci_dev *pcidev,
 					const struct pci_device_id *id)
 {
@@ -708,6 +978,7 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 
 	hba = (struct hptiop_hba *)host->hostdata;
 
+	hba->ops = (struct hptiop_adapter_ops *)id->driver_data;
 	hba->pcidev = pcidev;
 	hba->host = host;
 	hba->initialized = 0;
@@ -725,16 +996,24 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 	host->n_io_port = 0;
 	host->irq = pcidev->irq;
 
-	if (hptiop_map_pci_bar(hba))
+	if (hba->ops->map_pci_bar(hba))
 		goto free_scsi_host;
 
-	if (iop_wait_ready(hba->iop, 20000)) {
+	if (hba->ops->iop_wait_ready(hba, 20000)) {
 		printk(KERN_ERR "scsi%d: firmware not ready\n",
 				hba->host->host_no);
 		goto unmap_pci_bar;
 	}
 
-	if (iop_get_config(hba, &iop_config)) {
+	if (hba->ops->internal_memalloc) {
+		if (hba->ops->internal_memalloc(hba)) {
+			printk(KERN_ERR "scsi%d: internal_memalloc failed\n",
+				hba->host->host_no);
+			goto unmap_pci_bar;
+		}
+	}
+
+	if (hba->ops->get_config(hba, &iop_config)) {
 		printk(KERN_ERR "scsi%d: get config failed\n",
 				hba->host->host_no);
 		goto unmap_pci_bar;
@@ -770,7 +1049,7 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 	set_config.vbus_id = cpu_to_le16(host->host_no);
 	set_config.max_host_request_size = cpu_to_le16(req_size);
 
-	if (iop_set_config(hba, &set_config)) {
+	if (hba->ops->set_config(hba, &set_config)) {
 		printk(KERN_ERR "scsi%d: set config failed\n",
 				hba->host->host_no);
 		goto unmap_pci_bar;
@@ -839,21 +1118,24 @@ static int __devinit hptiop_probe(struct pci_dev *pcidev,
 
 free_request_mem:
 	dma_free_coherent(&hba->pcidev->dev,
-			hba->req_size*hba->max_requests + 0x20,
+			hba->req_size * hba->max_requests + 0x20,
 			hba->dma_coherent, hba->dma_coherent_handle);
 
 free_request_irq:
 	free_irq(hba->pcidev->irq, hba);
 
 unmap_pci_bar:
-	iounmap(hba->iop);
+	if (hba->ops->internal_memfree)
+		hba->ops->internal_memfree(hba);
 
-free_pci_regions:
-	pci_release_regions(pcidev) ;
+	hba->ops->unmap_pci_bar(hba);
 
 free_scsi_host:
 	scsi_host_put(host);
 
+free_pci_regions:
+	pci_release_regions(pcidev);
+
 disable_pci_device:
 	pci_disable_device(pcidev);
 
@@ -865,8 +1147,6 @@ static void hptiop_shutdown(struct pci_dev *pcidev)
 {
 	struct Scsi_Host *host = pci_get_drvdata(pcidev);
 	struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
-	struct hpt_iopmu __iomem *iop = hba->iop;
-	u32    int_mask;
 
 	dprintk("hptiop_shutdown(%p)\n", hba);
 
@@ -876,11 +1156,24 @@ static void hptiop_shutdown(struct pci_dev *pcidev)
 					hba->host->host_no);
 
 	/* disable all outbound interrupts */
-	int_mask = readl(&iop->outbound_intmask);
+	hba->ops->disable_intr(hba);
+}
+
+static void hptiop_disable_intr_itl(struct hptiop_hba *hba)
+{
+	u32 int_mask;
+
+	int_mask = readl(&hba->u.itl.iop->outbound_intmask);
 	writel(int_mask |
 		IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
-		&iop->outbound_intmask);
-	hptiop_pci_posting_flush(iop);
+		&hba->u.itl.iop->outbound_intmask);
+	readl(&hba->u.itl.iop->outbound_intmask);
+}
+
+static void hptiop_disable_intr_mv(struct hptiop_hba *hba)
+{
+	writel(0, &hba->u.mv.regs->outbound_intmask);
+	readl(&hba->u.mv.regs->outbound_intmask);
 }
 
 static void hptiop_remove(struct pci_dev *pcidev)
@@ -901,7 +1194,10 @@ static void hptiop_remove(struct pci_dev *pcidev)
 			hba->dma_coherent,
 			hba->dma_coherent_handle);
 
-	iounmap(hba->iop);
+	if (hba->ops->internal_memfree)
+		hba->ops->internal_memfree(hba);
+
+	hba->ops->unmap_pci_bar(hba);
 
 	pci_release_regions(hba->pcidev);
 	pci_set_drvdata(hba->pcidev, NULL);
@@ -910,11 +1206,50 @@ static void hptiop_remove(struct pci_dev *pcidev)
 	scsi_host_put(host);
 }
 
+static struct hptiop_adapter_ops hptiop_itl_ops = {
+	.iop_wait_ready    = iop_wait_ready_itl,
+	.internal_memalloc = 0,
+	.internal_memfree  = 0,
+	.map_pci_bar       = hptiop_map_pci_bar_itl,
+	.unmap_pci_bar     = hptiop_unmap_pci_bar_itl,
+	.enable_intr       = hptiop_enable_intr_itl,
+	.disable_intr      = hptiop_disable_intr_itl,
+	.get_config        = iop_get_config_itl,
+	.set_config        = iop_set_config_itl,
+	.iop_intr          = iop_intr_itl,
+	.post_msg          = hptiop_post_msg_itl,
+	.post_req          = hptiop_post_req_itl,
+};
+
+static struct hptiop_adapter_ops hptiop_mv_ops = {
+	.iop_wait_ready    = iop_wait_ready_mv,
+	.internal_memalloc = hptiop_internal_memalloc_mv,
+	.internal_memfree  = hptiop_internal_memfree_mv,
+	.map_pci_bar       = hptiop_map_pci_bar_mv,
+	.unmap_pci_bar     = hptiop_unmap_pci_bar_mv,
+	.enable_intr       = hptiop_enable_intr_mv,
+	.disable_intr      = hptiop_disable_intr_mv,
+	.get_config        = iop_get_config_mv,
+	.set_config        = iop_set_config_mv,
+	.iop_intr          = iop_intr_mv,
+	.post_msg          = hptiop_post_msg_mv,
+	.post_req          = hptiop_post_req_mv,
+};
+
 static struct pci_device_id hptiop_id_table[] = {
-	{ PCI_VDEVICE(TTI, 0x3220) },
-	{ PCI_VDEVICE(TTI, 0x3320) },
-	{ PCI_VDEVICE(TTI, 0x3520) },
-	{ PCI_VDEVICE(TTI, 0x4320) },
+	{ PCI_VDEVICE(TTI, 0x3220), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3320), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3520), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x4320), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3510), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3511), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3521), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3522), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3410), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3540), (kernel_ulong_t)&hptiop_itl_ops },
+	{ PCI_VDEVICE(TTI, 0x3120), (kernel_ulong_t)&hptiop_mv_ops },
+	{ PCI_VDEVICE(TTI, 0x3122), (kernel_ulong_t)&hptiop_mv_ops },
+	{ PCI_VDEVICE(TTI, 0x3020), (kernel_ulong_t)&hptiop_mv_ops },
 	{},
 };
 
diff --git a/drivers/scsi/hptiop.h b/drivers/scsi/hptiop.h
index 2a5e46e001c..a0289f21975 100644
--- a/drivers/scsi/hptiop.h
+++ b/drivers/scsi/hptiop.h
@@ -1,5 +1,5 @@
 /*
- * HighPoint RR3xxx controller driver for Linux
+ * HighPoint RR3xxx/4xxx controller driver for Linux
  * Copyright (C) 2006-2007 HighPoint Technologies, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,8 +18,7 @@
 #ifndef _HPTIOP_H_
 #define _HPTIOP_H_
 
-struct hpt_iopmu
-{
+struct hpt_iopmu_itl {
 	__le32 resrved0[4];
 	__le32 inbound_msgaddr0;
 	__le32 inbound_msgaddr1;
@@ -54,6 +53,40 @@ struct hpt_iopmu
 #define IOPMU_INBOUND_INT_ERROR      8
 #define IOPMU_INBOUND_INT_POSTQUEUE  0x10
 
+#define MVIOP_QUEUE_LEN  512
+
+struct hpt_iopmu_mv {
+	__le32 inbound_head;
+	__le32 inbound_tail;
+	__le32 outbound_head;
+	__le32 outbound_tail;
+	__le32 inbound_msg;
+	__le32 outbound_msg;
+	__le32 reserve[10];
+	__le64 inbound_q[MVIOP_QUEUE_LEN];
+	__le64 outbound_q[MVIOP_QUEUE_LEN];
+};
+
+struct hpt_iopmv_regs {
+	__le32 reserved[0x20400 / 4];
+	__le32 inbound_doorbell;
+	__le32 inbound_intmask;
+	__le32 outbound_doorbell;
+	__le32 outbound_intmask;
+};
+
+#define MVIOP_MU_QUEUE_ADDR_HOST_MASK   (~(0x1full))
+#define MVIOP_MU_QUEUE_ADDR_HOST_BIT    4
+
+#define MVIOP_MU_QUEUE_ADDR_IOP_HIGH32  0xffffffff
+#define MVIOP_MU_QUEUE_REQUEST_RESULT_BIT   1
+#define MVIOP_MU_QUEUE_REQUEST_RETURN_CONTEXT 2
+
+#define MVIOP_MU_INBOUND_INT_MSG        1
+#define MVIOP_MU_INBOUND_INT_POSTQUEUE  2
+#define MVIOP_MU_OUTBOUND_INT_MSG       1
+#define MVIOP_MU_OUTBOUND_INT_POSTQUEUE 2
+
 enum hpt_iopmu_message {
 	/* host-to-iop messages */
 	IOPMU_INBOUND_MSG0_NOP = 0,
@@ -72,8 +105,7 @@ enum hpt_iopmu_message {
 	IOPMU_OUTBOUND_MSG0_REVALIDATE_DEVICE_MAX = 0x3ff,
 };
 
-struct hpt_iop_request_header
-{
+struct hpt_iop_request_header {
 	__le32 size;
 	__le32 type;
 	__le32 flags;
@@ -104,11 +136,10 @@ enum hpt_iop_result_type {
 	IOP_RESULT_RESET,
 	IOP_RESULT_INVALID_REQUEST,
 	IOP_RESULT_BAD_TARGET,
-	IOP_RESULT_MODE_SENSE_CHECK_CONDITION,
+	IOP_RESULT_CHECK_CONDITION,
 };
 
-struct hpt_iop_request_get_config
-{
+struct hpt_iop_request_get_config {
 	struct hpt_iop_request_header header;
 	__le32 interface_version;
 	__le32 firmware_version;
@@ -121,8 +152,7 @@ struct hpt_iop_request_get_config
 	__le32 sdram_size;
 };
 
-struct hpt_iop_request_set_config
-{
+struct hpt_iop_request_set_config {
 	struct hpt_iop_request_header header;
 	__le32 iop_id;
 	__le16 vbus_id;
@@ -130,15 +160,13 @@ struct hpt_iop_request_set_config
 	__le32 reserve[6];
 };
 
-struct hpt_iopsg
-{
+struct hpt_iopsg {
 	__le32 size;
 	__le32 eot; /* non-zero: end of table */
 	__le64 pci_address;
 };
 
-struct hpt_iop_request_block_command
-{
+struct hpt_iop_request_block_command {
 	struct hpt_iop_request_header header;
 	u8     channel;
 	u8     target;
@@ -156,8 +184,7 @@ struct hpt_iop_request_block_command
 #define IOP_BLOCK_COMMAND_FLUSH    4
 #define IOP_BLOCK_COMMAND_SHUTDOWN 5
 
-struct hpt_iop_request_scsi_command
-{
+struct hpt_iop_request_scsi_command {
 	struct hpt_iop_request_header header;
 	u8     channel;
 	u8     target;
@@ -168,8 +195,7 @@ struct hpt_iop_request_scsi_command
 	struct hpt_iopsg sg_list[1];
 };
 
-struct hpt_iop_request_ioctl_command
-{
+struct hpt_iop_request_ioctl_command {
 	struct hpt_iop_request_header header;
 	__le32 ioctl_code;
 	__le32 inbuf_size;
@@ -182,11 +208,11 @@ struct hpt_iop_request_ioctl_command
 #define HPTIOP_MAX_REQUESTS  256u
 
 struct hptiop_request {
-	struct hptiop_request * next;
-	void *                  req_virt;
-	u32                     req_shifted_phy;
-	struct scsi_cmnd *      scp;
-	int                     index;
+	struct hptiop_request *next;
+	void                  *req_virt;
+	u32                   req_shifted_phy;
+	struct scsi_cmnd      *scp;
+	int                   index;
 };
 
 struct hpt_scsi_pointer {
@@ -198,9 +224,21 @@ struct hpt_scsi_pointer {
 #define HPT_SCP(scp) ((struct hpt_scsi_pointer *)&(scp)->SCp)
 
 struct hptiop_hba {
-	struct hpt_iopmu __iomem * iop;
-	struct Scsi_Host * host;
-	struct pci_dev * pcidev;
+	struct hptiop_adapter_ops *ops;
+	union {
+		struct {
+			struct hpt_iopmu_itl __iomem *iop;
+		} itl;
+		struct {
+			struct hpt_iopmv_regs *regs;
+			struct hpt_iopmu_mv __iomem *mu;
+			void *internal_req;
+			dma_addr_t internal_req_phy;
+		} mv;
+	} u;
+
+	struct Scsi_Host *host;
+	struct pci_dev *pcidev;
 
 	/* IOP config info */
 	u32     interface_version;
@@ -213,15 +251,15 @@ struct hptiop_hba {
 
 	u32     req_size; /* host-allocated request buffer size */
 
-	int     iopintf_v2: 1;
-	int     initialized: 1;
-	int     msg_done: 1;
+	u32     iopintf_v2: 1;
+	u32     initialized: 1;
+	u32     msg_done: 1;
 
 	struct hptiop_request * req_list;
 	struct hptiop_request reqs[HPTIOP_MAX_REQUESTS];
 
 	/* used to free allocated dma area */
-	void *      dma_coherent;
+	void        *dma_coherent;
 	dma_addr_t  dma_coherent_handle;
 
 	atomic_t    reset_count;
@@ -231,19 +269,35 @@ struct hptiop_hba {
 	wait_queue_head_t ioctl_wq;
 };
 
-struct hpt_ioctl_k
-{
+struct hpt_ioctl_k {
 	struct hptiop_hba * hba;
 	u32    ioctl_code;
 	u32    inbuf_size;
 	u32    outbuf_size;
-	void * inbuf;
-	void * outbuf;
-	u32  * bytes_returned;
+	void   *inbuf;
+	void   *outbuf;
+	u32    *bytes_returned;
 	void (*done)(struct hpt_ioctl_k *);
 	int    result; /* HPT_IOCTL_RESULT_ */
 };
 
+struct hptiop_adapter_ops {
+	int  (*iop_wait_ready)(struct hptiop_hba *hba, u32 millisec);
+	int  (*internal_memalloc)(struct hptiop_hba *hba);
+	int  (*internal_memfree)(struct hptiop_hba *hba);
+	int  (*map_pci_bar)(struct hptiop_hba *hba);
+	void (*unmap_pci_bar)(struct hptiop_hba *hba);
+	void (*enable_intr)(struct hptiop_hba *hba);
+	void (*disable_intr)(struct hptiop_hba *hba);
+	int  (*get_config)(struct hptiop_hba *hba,
+				struct hpt_iop_request_get_config *config);
+	int  (*set_config)(struct hptiop_hba *hba,
+				struct hpt_iop_request_set_config *config);
+	int  (*iop_intr)(struct hptiop_hba *hba);
+	void (*post_msg)(struct hptiop_hba *hba, u32 msg);
+	void (*post_req)(struct hptiop_hba *hba, struct hptiop_request *_req);
+};
+
 #define HPT_IOCTL_RESULT_OK         0
 #define HPT_IOCTL_RESULT_FAILED     (-1)