Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 4723 insertions, 0 deletions

diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
new file mode 100644
index 000000000..a66221c3b
--- /dev/null
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -0,0 +1,4723 @@
+/*
+*******************************************************************************
+**        O.S   : Linux
+**   FILE NAME  : arcmsr_hba.c
+**        BY    : Nick Cheng, C.L. Huang
+**   Description: SCSI RAID Device Driver for Areca RAID Controller
+*******************************************************************************
+** Copyright (C) 2002 - 2014, Areca Technology Corporation All rights reserved
+**
+**     Web site: www.areca.com.tw
+**       E-mail: support@areca.com.tw
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License version 2 as
+** published by the Free Software Foundation.
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+*******************************************************************************
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+** 1. Redistributions of source code must retain the above copyright
+**    notice, this list of conditions and the following disclaimer.
+** 2. Redistributions in binary form must reproduce the above copyright
+**    notice, this list of conditions and the following disclaimer in the
+**    documentation and/or other materials provided with the distribution.
+** 3. The name of the author may not be used to endorse or promote products
+**    derived from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
+** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
+** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*******************************************************************************
+** For history of changes, see Documentation/scsi/ChangeLog.arcmsr
+**     Firmware Specification, see Documentation/scsi/arcmsr_spec.rst
+*******************************************************************************
+*/
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/spinlock.h>
+#include <linux/pci_ids.h>
+#include <linux/interrupt.h>
+#include <linux/moduleparam.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/circ_buf.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsicam.h>
+#include "arcmsr.h"
+MODULE_AUTHOR("Nick Cheng, C.L. Huang <support@areca.com.tw>");
+MODULE_DESCRIPTION("Areca ARC11xx/12xx/16xx/188x SAS/SATA RAID Controller Driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(ARCMSR_DRIVER_VERSION);
+
+static int msix_enable = 1;
+module_param(msix_enable, int, S_IRUGO);
+MODULE_PARM_DESC(msix_enable, "Enable MSI-X interrupt(0 ~ 1), msix_enable=1(enable), =0(disable)");
+
+static int msi_enable = 1;
+module_param(msi_enable, int, S_IRUGO);
+MODULE_PARM_DESC(msi_enable, "Enable MSI interrupt(0 ~ 1), msi_enable=1(enable), =0(disable)");
+
+static int host_can_queue = ARCMSR_DEFAULT_OUTSTANDING_CMD;
+module_param(host_can_queue, int, S_IRUGO);
+MODULE_PARM_DESC(host_can_queue, " adapter queue depth(32 ~ 1024), default is 128");
+
+static int cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN;
+module_param(cmd_per_lun, int, S_IRUGO);
+MODULE_PARM_DESC(cmd_per_lun, " device queue depth(1 ~ 128), default is 32");
+
+static int dma_mask_64 = 0;
+module_param(dma_mask_64, int, S_IRUGO);
+MODULE_PARM_DESC(dma_mask_64, " set DMA mask to 64 bits(0 ~ 1), dma_mask_64=1(64 bits), =0(32 bits)");
+
+static int set_date_time = 0;
+module_param(set_date_time, int, S_IRUGO);
+MODULE_PARM_DESC(set_date_time, " send date, time to iop(0 ~ 1), set_date_time=1(enable), default(=0) is disable");
+
+static int cmd_timeout = ARCMSR_DEFAULT_TIMEOUT;
+module_param(cmd_timeout, int, S_IRUGO);
+MODULE_PARM_DESC(cmd_timeout, " scsi cmd timeout(0 ~ 120 sec.), default is 90");
+
+#define	ARCMSR_SLEEPTIME	10
+#define	ARCMSR_RETRYCOUNT	12
+
+static wait_queue_head_t wait_q;
+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
+					struct scsi_cmnd *cmd);
+static int arcmsr_iop_confirm(struct AdapterControlBlock *acb);
+static int arcmsr_abort(struct scsi_cmnd *);
+static int arcmsr_bus_reset(struct scsi_cmnd *);
+static int arcmsr_bios_param(struct scsi_device *sdev,
+		struct block_device *bdev, sector_t capacity, int *info);
+static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
+static int arcmsr_probe(struct pci_dev *pdev,
+				const struct pci_device_id *id);
+static int __maybe_unused arcmsr_suspend(struct device *dev);
+static int __maybe_unused arcmsr_resume(struct device *dev);
+static void arcmsr_remove(struct pci_dev *pdev);
+static void arcmsr_shutdown(struct pci_dev *pdev);
+static void arcmsr_iop_init(struct AdapterControlBlock *acb);
+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
+static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
+	u32 intmask_org);
+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
+static void arcmsr_hbaA_flush_cache(struct AdapterControlBlock *acb);
+static void arcmsr_hbaB_flush_cache(struct AdapterControlBlock *acb);
+static void arcmsr_request_device_map(struct timer_list *t);
+static void arcmsr_message_isr_bh_fn(struct work_struct *work);
+static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb);
+static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb);
+static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *pACB);
+static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb);
+static void arcmsr_hbaE_message_isr(struct AdapterControlBlock *acb);
+static void arcmsr_hbaE_postqueue_isr(struct AdapterControlBlock *acb);
+static void arcmsr_hbaF_postqueue_isr(struct AdapterControlBlock *acb);
+static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
+static const char *arcmsr_info(struct Scsi_Host *);
+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
+static void arcmsr_free_irq(struct pci_dev *, struct AdapterControlBlock *);
+static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb);
+static void arcmsr_set_iop_datetime(struct timer_list *);
+static int arcmsr_slave_config(struct scsi_device *sdev);
+static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
+{
+	if (queue_depth > ARCMSR_MAX_CMD_PERLUN)
+		queue_depth = ARCMSR_MAX_CMD_PERLUN;
+	return scsi_change_queue_depth(sdev, queue_depth);
+}
+
+static const struct scsi_host_template arcmsr_scsi_host_template = {
+	.module			= THIS_MODULE,
+	.proc_name		= ARCMSR_NAME,
+	.name			= "Areca SAS/SATA RAID driver",
+	.info			= arcmsr_info,
+	.queuecommand		= arcmsr_queue_command,
+	.eh_abort_handler	= arcmsr_abort,
+	.eh_bus_reset_handler	= arcmsr_bus_reset,
+	.bios_param		= arcmsr_bios_param,
+	.slave_configure	= arcmsr_slave_config,
+	.change_queue_depth	= arcmsr_adjust_disk_queue_depth,
+	.can_queue		= ARCMSR_DEFAULT_OUTSTANDING_CMD,
+	.this_id		= ARCMSR_SCSI_INITIATOR_ID,
+	.sg_tablesize	        = ARCMSR_DEFAULT_SG_ENTRIES,
+	.max_sectors		= ARCMSR_MAX_XFER_SECTORS_C,
+	.cmd_per_lun		= ARCMSR_DEFAULT_CMD_PERLUN,
+	.shost_groups		= arcmsr_host_groups,
+	.no_write_same		= 1,
+};
+
+static struct pci_device_id arcmsr_device_id_table[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200),
+		.driver_data = ACB_ADAPTER_TYPE_B},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201),
+		.driver_data = ACB_ADAPTER_TYPE_B},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202),
+		.driver_data = ACB_ADAPTER_TYPE_B},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1203),
+		.driver_data = ACB_ADAPTER_TYPE_B},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1214),
+		.driver_data = ACB_ADAPTER_TYPE_D},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1260),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1270),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1280),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1380),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1381),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1680),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1681),
+		.driver_data = ACB_ADAPTER_TYPE_A},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1880),
+		.driver_data = ACB_ADAPTER_TYPE_C},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1884),
+		.driver_data = ACB_ADAPTER_TYPE_E},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1886),
+		.driver_data = ACB_ADAPTER_TYPE_F},
+	{0, 0}, /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, arcmsr_device_id_table);
+
+static SIMPLE_DEV_PM_OPS(arcmsr_pm_ops, arcmsr_suspend, arcmsr_resume);
+
+static struct pci_driver arcmsr_pci_driver = {
+	.name			= "arcmsr",
+	.id_table		= arcmsr_device_id_table,
+	.probe			= arcmsr_probe,
+	.remove			= arcmsr_remove,
+	.driver.pm		= &arcmsr_pm_ops,
+	.shutdown		= arcmsr_shutdown,
+};
+/*
+****************************************************************************
+****************************************************************************
+*/
+
+static void arcmsr_free_io_queue(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_B:
+	case ACB_ADAPTER_TYPE_D:
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		dma_free_coherent(&acb->pdev->dev, acb->ioqueue_size,
+			acb->dma_coherent2, acb->dma_coherent_handle2);
+		break;
+	}
+}
+
+static bool arcmsr_remap_pciregion(struct AdapterControlBlock *acb)
+{
+	struct pci_dev *pdev = acb->pdev;
+	switch (acb->adapter_type){
+	case ACB_ADAPTER_TYPE_A:{
+		acb->pmuA = ioremap(pci_resource_start(pdev,0), pci_resource_len(pdev,0));
+		if (!acb->pmuA) {
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
+			return false;
+		}
+		break;
+	}
+	case ACB_ADAPTER_TYPE_B:{
+		void __iomem *mem_base0, *mem_base1;
+		mem_base0 = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+		if (!mem_base0) {
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
+			return false;
+		}
+		mem_base1 = ioremap(pci_resource_start(pdev, 2), pci_resource_len(pdev, 2));
+		if (!mem_base1) {
+			iounmap(mem_base0);
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
+			return false;
+		}
+		acb->mem_base0 = mem_base0;
+		acb->mem_base1 = mem_base1;
+		break;
+	}
+	case ACB_ADAPTER_TYPE_C:{
+		acb->pmuC = ioremap(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
+		if (!acb->pmuC) {
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n", acb->host->host_no);
+			return false;
+		}
+		if (readl(&acb->pmuC->outbound_doorbell) & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &acb->pmuC->outbound_doorbell_clear);/*clear interrupt*/
+			return true;
+		}
+		break;
+	}
+	case ACB_ADAPTER_TYPE_D: {
+		void __iomem *mem_base0;
+		unsigned long addr, range;
+
+		addr = (unsigned long)pci_resource_start(pdev, 0);
+		range = pci_resource_len(pdev, 0);
+		mem_base0 = ioremap(addr, range);
+		if (!mem_base0) {
+			pr_notice("arcmsr%d: memory mapping region fail\n",
+				acb->host->host_no);
+			return false;
+		}
+		acb->mem_base0 = mem_base0;
+		break;
+		}
+	case ACB_ADAPTER_TYPE_E: {
+		acb->pmuE = ioremap(pci_resource_start(pdev, 1),
+			pci_resource_len(pdev, 1));
+		if (!acb->pmuE) {
+			pr_notice("arcmsr%d: memory mapping region fail \n",
+				acb->host->host_no);
+			return false;
+		}
+		writel(0, &acb->pmuE->host_int_status); /*clear interrupt*/
+		writel(ARCMSR_HBEMU_DOORBELL_SYNC, &acb->pmuE->iobound_doorbell);	/* synchronize doorbell to 0 */
+		acb->in_doorbell = 0;
+		acb->out_doorbell = 0;
+		break;
+		}
+	case ACB_ADAPTER_TYPE_F: {
+		acb->pmuF = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+		if (!acb->pmuF) {
+			pr_notice("arcmsr%d: memory mapping region fail\n",
+				acb->host->host_no);
+			return false;
+		}
+		writel(0, &acb->pmuF->host_int_status); /* clear interrupt */
+		writel(ARCMSR_HBFMU_DOORBELL_SYNC, &acb->pmuF->iobound_doorbell);
+		acb->in_doorbell = 0;
+		acb->out_doorbell = 0;
+		break;
+		}
+	}
+	return true;
+}
+
+static void arcmsr_unmap_pciregion(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		iounmap(acb->pmuA);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		iounmap(acb->mem_base0);
+		iounmap(acb->mem_base1);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		iounmap(acb->pmuC);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		iounmap(acb->mem_base0);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+		iounmap(acb->pmuE);
+		break;
+	case ACB_ADAPTER_TYPE_F:
+		iounmap(acb->pmuF);
+		break;
+	}
+}
+
+static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
+{
+	irqreturn_t handle_state;
+	struct AdapterControlBlock *acb = dev_id;
+
+	handle_state = arcmsr_interrupt(acb);
+	return handle_state;
+}
+
+static int arcmsr_bios_param(struct scsi_device *sdev,
+		struct block_device *bdev, sector_t capacity, int *geom)
+{
+	int heads, sectors, cylinders, total_capacity;
+
+	if (scsi_partsize(bdev, capacity, geom))
+		return 0;
+
+	total_capacity = capacity;
+	heads = 64;
+	sectors = 32;
+	cylinders = total_capacity / (heads * sectors);
+	if (cylinders > 1024) {
+		heads = 255;
+		sectors = 63;
+		cylinders = total_capacity / (heads * sectors);
+	}
+	geom[0] = heads;
+	geom[1] = sectors;
+	geom[2] = cylinders;
+	return 0;
+}
+
+static uint8_t arcmsr_hbaA_wait_msgint_ready(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	int i;
+
+	for (i = 0; i < 2000; i++) {
+		if (readl(&reg->outbound_intstatus) &
+				ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
+			writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
+				&reg->outbound_intstatus);
+			return true;
+		}
+		msleep(10);
+	} /* max 20 seconds */
+
+	return false;
+}
+
+static uint8_t arcmsr_hbaB_wait_msgint_ready(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+	int i;
+
+	for (i = 0; i < 2000; i++) {
+		if (readl(reg->iop2drv_doorbell)
+			& ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN,
+					reg->iop2drv_doorbell);
+			writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT,
+					reg->drv2iop_doorbell);
+			return true;
+		}
+		msleep(10);
+	} /* max 20 seconds */
+
+	return false;
+}
+
+static uint8_t arcmsr_hbaC_wait_msgint_ready(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
+	int i;
+
+	for (i = 0; i < 2000; i++) {
+		if (readl(&phbcmu->outbound_doorbell)
+				& ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR,
+				&phbcmu->outbound_doorbell_clear); /*clear interrupt*/
+			return true;
+		}
+		msleep(10);
+	} /* max 20 seconds */
+
+	return false;
+}
+
+static bool arcmsr_hbaD_wait_msgint_ready(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_D *reg = pACB->pmuD;
+	int i;
+
+	for (i = 0; i < 2000; i++) {
+		if (readl(reg->outbound_doorbell)
+			& ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
+				reg->outbound_doorbell);
+			return true;
+		}
+		msleep(10);
+	} /* max 20 seconds */
+	return false;
+}
+
+static bool arcmsr_hbaE_wait_msgint_ready(struct AdapterControlBlock *pACB)
+{
+	int i;
+	uint32_t read_doorbell;
+	struct MessageUnit_E __iomem *phbcmu = pACB->pmuE;
+
+	for (i = 0; i < 2000; i++) {
+		read_doorbell = readl(&phbcmu->iobound_doorbell);
+		if ((read_doorbell ^ pACB->in_doorbell) & ARCMSR_HBEMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			writel(0, &phbcmu->host_int_status); /*clear interrupt*/
+			pACB->in_doorbell = read_doorbell;
+			return true;
+		}
+		msleep(10);
+	} /* max 20 seconds */
+	return false;
+}
+
+static void arcmsr_hbaA_flush_cache(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	int retry_count = 30;
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
+	do {
+		if (arcmsr_hbaA_wait_msgint_ready(acb))
+			break;
+		else {
+			retry_count--;
+			printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
+			timeout, retry count down = %d \n", acb->host->host_no, retry_count);
+		}
+	} while (retry_count != 0);
+}
+
+static void arcmsr_hbaB_flush_cache(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+	int retry_count = 30;
+	writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell);
+	do {
+		if (arcmsr_hbaB_wait_msgint_ready(acb))
+			break;
+		else {
+			retry_count--;
+			printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
+			timeout,retry count down = %d \n", acb->host->host_no, retry_count);
+		}
+	} while (retry_count != 0);
+}
+
+static void arcmsr_hbaC_flush_cache(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C __iomem *reg = pACB->pmuC;
+	int retry_count = 30;/* enlarge wait flush adapter cache time: 10 minute */
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	do {
+		if (arcmsr_hbaC_wait_msgint_ready(pACB)) {
+			break;
+		} else {
+			retry_count--;
+			printk(KERN_NOTICE "arcmsr%d: wait 'flush adapter cache' \
+			timeout,retry count down = %d \n", pACB->host->host_no, retry_count);
+		}
+	} while (retry_count != 0);
+	return;
+}
+
+static void arcmsr_hbaD_flush_cache(struct AdapterControlBlock *pACB)
+{
+	int retry_count = 15;
+	struct MessageUnit_D *reg = pACB->pmuD;
+
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, reg->inbound_msgaddr0);
+	do {
+		if (arcmsr_hbaD_wait_msgint_ready(pACB))
+			break;
+
+		retry_count--;
+		pr_notice("arcmsr%d: wait 'flush adapter "
+			"cache' timeout, retry count down = %d\n",
+			pACB->host->host_no, retry_count);
+	} while (retry_count != 0);
+}
+
+static void arcmsr_hbaE_flush_cache(struct AdapterControlBlock *pACB)
+{
+	int retry_count = 30;
+	struct MessageUnit_E __iomem *reg = pACB->pmuE;
+
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &reg->iobound_doorbell);
+	do {
+		if (arcmsr_hbaE_wait_msgint_ready(pACB))
+			break;
+		retry_count--;
+		pr_notice("arcmsr%d: wait 'flush adapter "
+			"cache' timeout, retry count down = %d\n",
+			pACB->host->host_no, retry_count);
+	} while (retry_count != 0);
+}
+
+static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A:
+		arcmsr_hbaA_flush_cache(acb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		arcmsr_hbaB_flush_cache(acb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		arcmsr_hbaC_flush_cache(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		arcmsr_hbaD_flush_cache(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		arcmsr_hbaE_flush_cache(acb);
+		break;
+	}
+}
+
+static void arcmsr_hbaB_assign_regAddr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+
+	if (acb->pdev->device == PCI_DEVICE_ID_ARECA_1203) {
+		reg->drv2iop_doorbell = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_1203);
+		reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK_1203);
+		reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_1203);
+		reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK_1203);
+	} else {
+		reg->drv2iop_doorbell= MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL);
+		reg->drv2iop_doorbell_mask = MEM_BASE0(ARCMSR_DRV2IOP_DOORBELL_MASK);
+		reg->iop2drv_doorbell = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL);
+		reg->iop2drv_doorbell_mask = MEM_BASE0(ARCMSR_IOP2DRV_DOORBELL_MASK);
+	}
+	reg->message_wbuffer = MEM_BASE1(ARCMSR_MESSAGE_WBUFFER);
+	reg->message_rbuffer =  MEM_BASE1(ARCMSR_MESSAGE_RBUFFER);
+	reg->message_rwbuffer = MEM_BASE1(ARCMSR_MESSAGE_RWBUFFER);
+}
+
+static void arcmsr_hbaD_assign_regAddr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_D *reg = acb->pmuD;
+
+	reg->chip_id = MEM_BASE0(ARCMSR_ARC1214_CHIP_ID);
+	reg->cpu_mem_config = MEM_BASE0(ARCMSR_ARC1214_CPU_MEMORY_CONFIGURATION);
+	reg->i2o_host_interrupt_mask = MEM_BASE0(ARCMSR_ARC1214_I2_HOST_INTERRUPT_MASK);
+	reg->sample_at_reset = MEM_BASE0(ARCMSR_ARC1214_SAMPLE_RESET);
+	reg->reset_request = MEM_BASE0(ARCMSR_ARC1214_RESET_REQUEST);
+	reg->host_int_status = MEM_BASE0(ARCMSR_ARC1214_MAIN_INTERRUPT_STATUS);
+	reg->pcief0_int_enable = MEM_BASE0(ARCMSR_ARC1214_PCIE_F0_INTERRUPT_ENABLE);
+	reg->inbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE0);
+	reg->inbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_INBOUND_MESSAGE1);
+	reg->outbound_msgaddr0 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE0);
+	reg->outbound_msgaddr1 = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_MESSAGE1);
+	reg->inbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_INBOUND_DOORBELL);
+	reg->outbound_doorbell = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL);
+	reg->outbound_doorbell_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_DOORBELL_ENABLE);
+	reg->inboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_LOW);
+	reg->inboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_BASE_HIGH);
+	reg->inboundlist_write_pointer = MEM_BASE0(ARCMSR_ARC1214_INBOUND_LIST_WRITE_POINTER);
+	reg->outboundlist_base_low = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_LOW);
+	reg->outboundlist_base_high = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_BASE_HIGH);
+	reg->outboundlist_copy_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_COPY_POINTER);
+	reg->outboundlist_read_pointer = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_LIST_READ_POINTER);
+	reg->outboundlist_interrupt_cause = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_CAUSE);
+	reg->outboundlist_interrupt_enable = MEM_BASE0(ARCMSR_ARC1214_OUTBOUND_INTERRUPT_ENABLE);
+	reg->message_wbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_WBUFFER);
+	reg->message_rbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RBUFFER);
+	reg->msgcode_rwbuffer = MEM_BASE0(ARCMSR_ARC1214_MESSAGE_RWBUFFER);
+}
+
+static void arcmsr_hbaF_assign_regAddr(struct AdapterControlBlock *acb)
+{
+	dma_addr_t host_buffer_dma;
+	struct MessageUnit_F __iomem *pmuF;
+
+	memset(acb->dma_coherent2, 0xff, acb->completeQ_size);
+	acb->message_wbuffer = (uint32_t *)round_up((unsigned long)acb->dma_coherent2 +
+		acb->completeQ_size, 4);
+	acb->message_rbuffer = ((void *)acb->message_wbuffer) + 0x100;
+	acb->msgcode_rwbuffer = ((void *)acb->message_wbuffer) + 0x200;
+	memset((void *)acb->message_wbuffer, 0, MESG_RW_BUFFER_SIZE);
+	host_buffer_dma = round_up(acb->dma_coherent_handle2 + acb->completeQ_size, 4);
+	pmuF = acb->pmuF;
+	/* host buffer low address, bit0:1 all buffer active */
+	writel(lower_32_bits(host_buffer_dma | 1), &pmuF->inbound_msgaddr0);
+	/* host buffer high address */
+	writel(upper_32_bits(host_buffer_dma), &pmuF->inbound_msgaddr1);
+	/* set host buffer physical address */
+	writel(ARCMSR_HBFMU_DOORBELL_SYNC1, &pmuF->iobound_doorbell);
+}
+
+static bool arcmsr_alloc_io_queue(struct AdapterControlBlock *acb)
+{
+	bool rtn = true;
+	void *dma_coherent;
+	dma_addr_t dma_coherent_handle;
+	struct pci_dev *pdev = acb->pdev;
+
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_B: {
+		acb->ioqueue_size = roundup(sizeof(struct MessageUnit_B), 32);
+		dma_coherent = dma_alloc_coherent(&pdev->dev, acb->ioqueue_size,
+			&dma_coherent_handle, GFP_KERNEL);
+		if (!dma_coherent) {
+			pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+			return false;
+		}
+		acb->dma_coherent_handle2 = dma_coherent_handle;
+		acb->dma_coherent2 = dma_coherent;
+		acb->pmuB = (struct MessageUnit_B *)dma_coherent;
+		arcmsr_hbaB_assign_regAddr(acb);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		acb->ioqueue_size = roundup(sizeof(struct MessageUnit_D), 32);
+		dma_coherent = dma_alloc_coherent(&pdev->dev, acb->ioqueue_size,
+			&dma_coherent_handle, GFP_KERNEL);
+		if (!dma_coherent) {
+			pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+			return false;
+		}
+		acb->dma_coherent_handle2 = dma_coherent_handle;
+		acb->dma_coherent2 = dma_coherent;
+		acb->pmuD = (struct MessageUnit_D *)dma_coherent;
+		arcmsr_hbaD_assign_regAddr(acb);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E: {
+		uint32_t completeQ_size;
+		completeQ_size = sizeof(struct deliver_completeQ) * ARCMSR_MAX_HBE_DONEQUEUE + 128;
+		acb->ioqueue_size = roundup(completeQ_size, 32);
+		dma_coherent = dma_alloc_coherent(&pdev->dev, acb->ioqueue_size,
+			&dma_coherent_handle, GFP_KERNEL);
+		if (!dma_coherent){
+			pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+			return false;
+		}
+		acb->dma_coherent_handle2 = dma_coherent_handle;
+		acb->dma_coherent2 = dma_coherent;
+		acb->pCompletionQ = dma_coherent;
+		acb->completionQ_entry = acb->ioqueue_size / sizeof(struct deliver_completeQ);
+		acb->doneq_index = 0;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_F: {
+		uint32_t QueueDepth;
+		uint32_t depthTbl[] = {256, 512, 1024, 128, 64, 32};
+
+		arcmsr_wait_firmware_ready(acb);
+		QueueDepth = depthTbl[readl(&acb->pmuF->outbound_msgaddr1) & 7];
+		acb->completeQ_size = sizeof(struct deliver_completeQ) * QueueDepth + 128;
+		acb->ioqueue_size = roundup(acb->completeQ_size + MESG_RW_BUFFER_SIZE, 32);
+		dma_coherent = dma_alloc_coherent(&pdev->dev, acb->ioqueue_size,
+			&dma_coherent_handle, GFP_KERNEL);
+		if (!dma_coherent) {
+			pr_notice("arcmsr%d: DMA allocation failed\n", acb->host->host_no);
+			return false;
+		}
+		acb->dma_coherent_handle2 = dma_coherent_handle;
+		acb->dma_coherent2 = dma_coherent;
+		acb->pCompletionQ = dma_coherent;
+		acb->completionQ_entry = acb->completeQ_size / sizeof(struct deliver_completeQ);
+		acb->doneq_index = 0;
+		arcmsr_hbaF_assign_regAddr(acb);
+		}
+		break;
+	default:
+		break;
+	}
+	return rtn;
+}
+
+static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
+{
+	struct pci_dev *pdev = acb->pdev;
+	void *dma_coherent;
+	dma_addr_t dma_coherent_handle;
+	struct CommandControlBlock *ccb_tmp;
+	int i = 0, j = 0;
+	unsigned long cdb_phyaddr, next_ccb_phy;
+	unsigned long roundup_ccbsize;
+	unsigned long max_xfer_len;
+	unsigned long max_sg_entrys;
+	uint32_t  firm_config_version, curr_phy_upper32;
+
+	for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
+		for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
+			acb->devstate[i][j] = ARECA_RAID_GONE;
+
+	max_xfer_len = ARCMSR_MAX_XFER_LEN;
+	max_sg_entrys = ARCMSR_DEFAULT_SG_ENTRIES;
+	firm_config_version = acb->firm_cfg_version;
+	if((firm_config_version & 0xFF) >= 3){
+		max_xfer_len = (ARCMSR_CDB_SG_PAGE_LENGTH << ((firm_config_version >> 8) & 0xFF)) * 1024;/* max 4M byte */
+		max_sg_entrys = (max_xfer_len/4096);
+	}
+	acb->host->max_sectors = max_xfer_len/512;
+	acb->host->sg_tablesize = max_sg_entrys;
+	roundup_ccbsize = roundup(sizeof(struct CommandControlBlock) + (max_sg_entrys - 1) * sizeof(struct SG64ENTRY), 32);
+	acb->uncache_size = roundup_ccbsize * acb->maxFreeCCB;
+	if (acb->adapter_type != ACB_ADAPTER_TYPE_F)
+		acb->uncache_size += acb->ioqueue_size;
+	dma_coherent = dma_alloc_coherent(&pdev->dev, acb->uncache_size, &dma_coherent_handle, GFP_KERNEL);
+	if(!dma_coherent){
+		printk(KERN_NOTICE "arcmsr%d: dma_alloc_coherent got error\n", acb->host->host_no);
+		return -ENOMEM;
+	}
+	acb->dma_coherent = dma_coherent;
+	acb->dma_coherent_handle = dma_coherent_handle;
+	memset(dma_coherent, 0, acb->uncache_size);
+	acb->ccbsize = roundup_ccbsize;
+	ccb_tmp = dma_coherent;
+	curr_phy_upper32 = upper_32_bits(dma_coherent_handle);
+	acb->vir2phy_offset = (unsigned long)dma_coherent - (unsigned long)dma_coherent_handle;
+	for(i = 0; i < acb->maxFreeCCB; i++){
+		cdb_phyaddr = (unsigned long)dma_coherent_handle + offsetof(struct CommandControlBlock, arcmsr_cdb);
+		switch (acb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A:
+		case ACB_ADAPTER_TYPE_B:
+			ccb_tmp->cdb_phyaddr = cdb_phyaddr >> 5;
+			break;
+		case ACB_ADAPTER_TYPE_C:
+		case ACB_ADAPTER_TYPE_D:
+		case ACB_ADAPTER_TYPE_E:
+		case ACB_ADAPTER_TYPE_F:
+			ccb_tmp->cdb_phyaddr = cdb_phyaddr;
+			break;
+		}
+		acb->pccb_pool[i] = ccb_tmp;
+		ccb_tmp->acb = acb;
+		ccb_tmp->smid = (u32)i << 16;
+		INIT_LIST_HEAD(&ccb_tmp->list);
+		next_ccb_phy = dma_coherent_handle + roundup_ccbsize;
+		if (upper_32_bits(next_ccb_phy) != curr_phy_upper32) {
+			acb->maxFreeCCB = i;
+			acb->host->can_queue = i;
+			break;
+		}
+		else
+			list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
+		ccb_tmp = (struct CommandControlBlock *)((unsigned long)ccb_tmp + roundup_ccbsize);
+		dma_coherent_handle = next_ccb_phy;
+	}
+	if (acb->adapter_type != ACB_ADAPTER_TYPE_F) {
+		acb->dma_coherent_handle2 = dma_coherent_handle;
+		acb->dma_coherent2 = ccb_tmp;
+	}
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_B:
+		acb->pmuB = (struct MessageUnit_B *)acb->dma_coherent2;
+		arcmsr_hbaB_assign_regAddr(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		acb->pmuD = (struct MessageUnit_D *)acb->dma_coherent2;
+		arcmsr_hbaD_assign_regAddr(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+		acb->pCompletionQ = acb->dma_coherent2;
+		acb->completionQ_entry = acb->ioqueue_size / sizeof(struct deliver_completeQ);
+		acb->doneq_index = 0;
+		break;
+	}	
+	return 0;
+}
+
+static void arcmsr_message_isr_bh_fn(struct work_struct *work) 
+{
+	struct AdapterControlBlock *acb = container_of(work,
+		struct AdapterControlBlock, arcmsr_do_message_isr_bh);
+	char *acb_dev_map = (char *)acb->device_map;
+	uint32_t __iomem *signature = NULL;
+	char __iomem *devicemap = NULL;
+	int target, lun;
+	struct scsi_device *psdev;
+	char diff, temp;
+
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg  = acb->pmuA;
+
+		signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
+		devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
+		break;
+	}
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg  = acb->pmuB;
+
+		signature = (uint32_t __iomem *)(&reg->message_rwbuffer[0]);
+		devicemap = (char __iomem *)(&reg->message_rwbuffer[21]);
+		break;
+	}
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg  = acb->pmuC;
+
+		signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
+		devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
+		break;
+	}
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg  = acb->pmuD;
+
+		signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
+		devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
+		break;
+	}
+	case ACB_ADAPTER_TYPE_E: {
+		struct MessageUnit_E __iomem *reg  = acb->pmuE;
+
+		signature = (uint32_t __iomem *)(&reg->msgcode_rwbuffer[0]);
+		devicemap = (char __iomem *)(&reg->msgcode_rwbuffer[21]);
+		break;
+		}
+	case ACB_ADAPTER_TYPE_F: {
+		signature = (uint32_t __iomem *)(&acb->msgcode_rwbuffer[0]);
+		devicemap = (char __iomem *)(&acb->msgcode_rwbuffer[21]);
+		break;
+		}
+	}
+	if (readl(signature) != ARCMSR_SIGNATURE_GET_CONFIG)
+		return;
+	for (target = 0; target < ARCMSR_MAX_TARGETID - 1;
+		target++) {
+		temp = readb(devicemap);
+		diff = (*acb_dev_map) ^ temp;
+		if (diff != 0) {
+			*acb_dev_map = temp;
+			for (lun = 0; lun < ARCMSR_MAX_TARGETLUN;
+				lun++) {
+				if ((diff & 0x01) == 1 &&
+					(temp & 0x01) == 1) {
+					scsi_add_device(acb->host,
+						0, target, lun);
+				} else if ((diff & 0x01) == 1
+					&& (temp & 0x01) == 0) {
+					psdev = scsi_device_lookup(acb->host,
+						0, target, lun);
+					if (psdev != NULL) {
+						scsi_remove_device(psdev);
+						scsi_device_put(psdev);
+					}
+				}
+				temp >>= 1;
+				diff >>= 1;
+			}
+		}
+		devicemap++;
+		acb_dev_map++;
+	}
+	acb->acb_flags &= ~ACB_F_MSG_GET_CONFIG;
+}
+
+static int
+arcmsr_request_irq(struct pci_dev *pdev, struct AdapterControlBlock *acb)
+{
+	unsigned long flags;
+	int nvec, i;
+
+	if (msix_enable == 0)
+		goto msi_int0;
+	nvec = pci_alloc_irq_vectors(pdev, 1, ARCMST_NUM_MSIX_VECTORS,
+			PCI_IRQ_MSIX);
+	if (nvec > 0) {
+		pr_info("arcmsr%d: msi-x enabled\n", acb->host->host_no);
+		flags = 0;
+	} else {
+msi_int0:
+		if (msi_enable == 1) {
+			nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
+			if (nvec == 1) {
+				dev_info(&pdev->dev, "msi enabled\n");
+				goto msi_int1;
+			}
+		}
+		nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY);
+		if (nvec < 1)
+			return FAILED;
+msi_int1:
+		flags = IRQF_SHARED;
+	}
+
+	acb->vector_count = nvec;
+	for (i = 0; i < nvec; i++) {
+		if (request_irq(pci_irq_vector(pdev, i), arcmsr_do_interrupt,
+				flags, "arcmsr", acb)) {
+			pr_warn("arcmsr%d: request_irq =%d failed!\n",
+				acb->host->host_no, pci_irq_vector(pdev, i));
+			goto out_free_irq;
+		}
+	}
+
+	return SUCCESS;
+out_free_irq:
+	while (--i >= 0)
+		free_irq(pci_irq_vector(pdev, i), acb);
+	pci_free_irq_vectors(pdev);
+	return FAILED;
+}
+
+static void arcmsr_init_get_devmap_timer(struct AdapterControlBlock *pacb)
+{
+	INIT_WORK(&pacb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
+	pacb->fw_flag = FW_NORMAL;
+	timer_setup(&pacb->eternal_timer, arcmsr_request_device_map, 0);
+	pacb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
+	add_timer(&pacb->eternal_timer);
+}
+
+static void arcmsr_init_set_datetime_timer(struct AdapterControlBlock *pacb)
+{
+	timer_setup(&pacb->refresh_timer, arcmsr_set_iop_datetime, 0);
+	pacb->refresh_timer.expires = jiffies + msecs_to_jiffies(60 * 1000);
+	add_timer(&pacb->refresh_timer);
+}
+
+static int arcmsr_set_dma_mask(struct AdapterControlBlock *acb)
+{
+	struct pci_dev *pcidev = acb->pdev;
+
+	if (IS_DMA64) {
+		if (((acb->adapter_type == ACB_ADAPTER_TYPE_A) && !dma_mask_64) ||
+		    dma_set_mask(&pcidev->dev, DMA_BIT_MASK(64)))
+			goto	dma32;
+		if (acb->adapter_type <= ACB_ADAPTER_TYPE_B)
+			return 0;
+		if (dma_set_coherent_mask(&pcidev->dev, DMA_BIT_MASK(64)) ||
+		    dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(64))) {
+			printk("arcmsr: set DMA 64 mask failed\n");
+			return -ENXIO;
+		}
+	} else {
+dma32:
+		if (dma_set_mask(&pcidev->dev, DMA_BIT_MASK(32)) ||
+		    dma_set_coherent_mask(&pcidev->dev, DMA_BIT_MASK(32)) ||
+		    dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32))) {
+			printk("arcmsr: set DMA 32-bit mask failed\n");
+			return -ENXIO;
+		}
+	}
+	return 0;
+}
+
+static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct Scsi_Host *host;
+	struct AdapterControlBlock *acb;
+	uint8_t bus,dev_fun;
+	int error;
+	error = pci_enable_device(pdev);
+	if(error){
+		return -ENODEV;
+	}
+	host = scsi_host_alloc(&arcmsr_scsi_host_template, sizeof(struct AdapterControlBlock));
+	if(!host){
+    		goto pci_disable_dev;
+	}
+	init_waitqueue_head(&wait_q);
+	bus = pdev->bus->number;
+	dev_fun = pdev->devfn;
+	acb = (struct AdapterControlBlock *) host->hostdata;
+	memset(acb,0,sizeof(struct AdapterControlBlock));
+	acb->pdev = pdev;
+	acb->adapter_type = id->driver_data;
+	if (arcmsr_set_dma_mask(acb))
+		goto scsi_host_release;
+	acb->host = host;
+	host->max_lun = ARCMSR_MAX_TARGETLUN;
+	host->max_id = ARCMSR_MAX_TARGETID;		/*16:8*/
+	host->max_cmd_len = 16;	 			/*this is issue of 64bit LBA ,over 2T byte*/
+	if ((host_can_queue < ARCMSR_MIN_OUTSTANDING_CMD) || (host_can_queue > ARCMSR_MAX_OUTSTANDING_CMD))
+		host_can_queue = ARCMSR_DEFAULT_OUTSTANDING_CMD;
+	host->can_queue = host_can_queue;	/* max simultaneous cmds */
+	if ((cmd_per_lun < ARCMSR_MIN_CMD_PERLUN) || (cmd_per_lun > ARCMSR_MAX_CMD_PERLUN))
+		cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN;
+	host->cmd_per_lun = cmd_per_lun;
+	host->this_id = ARCMSR_SCSI_INITIATOR_ID;
+	host->unique_id = (bus << 8) | dev_fun;
+	pci_set_drvdata(pdev, host);
+	pci_set_master(pdev);
+	error = pci_request_regions(pdev, "arcmsr");
+	if(error){
+		goto scsi_host_release;
+	}
+	spin_lock_init(&acb->eh_lock);
+	spin_lock_init(&acb->ccblist_lock);
+	spin_lock_init(&acb->postq_lock);
+	spin_lock_init(&acb->doneq_lock);
+	spin_lock_init(&acb->rqbuffer_lock);
+	spin_lock_init(&acb->wqbuffer_lock);
+	acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
+			ACB_F_MESSAGE_RQBUFFER_CLEARED |
+			ACB_F_MESSAGE_WQBUFFER_READED);
+	acb->acb_flags &= ~ACB_F_SCSISTOPADAPTER;
+	INIT_LIST_HEAD(&acb->ccb_free_list);
+	error = arcmsr_remap_pciregion(acb);
+	if(!error){
+		goto pci_release_regs;
+	}
+	error = arcmsr_alloc_io_queue(acb);
+	if (!error)
+		goto unmap_pci_region;
+	error = arcmsr_get_firmware_spec(acb);
+	if(!error){
+		goto free_hbb_mu;
+	}
+	if (acb->adapter_type != ACB_ADAPTER_TYPE_F)
+		arcmsr_free_io_queue(acb);
+	error = arcmsr_alloc_ccb_pool(acb);
+	if(error){
+		goto unmap_pci_region;
+	}
+	error = scsi_add_host(host, &pdev->dev);
+	if(error){
+		goto free_ccb_pool;
+	}
+	if (arcmsr_request_irq(pdev, acb) == FAILED)
+		goto scsi_host_remove;
+	arcmsr_iop_init(acb);
+	arcmsr_init_get_devmap_timer(acb);
+	if (set_date_time)
+		arcmsr_init_set_datetime_timer(acb);
+	if(arcmsr_alloc_sysfs_attr(acb))
+		goto out_free_sysfs;
+	scsi_scan_host(host);
+	return 0;
+out_free_sysfs:
+	if (set_date_time)
+		del_timer_sync(&acb->refresh_timer);
+	del_timer_sync(&acb->eternal_timer);
+	flush_work(&acb->arcmsr_do_message_isr_bh);
+	arcmsr_stop_adapter_bgrb(acb);
+	arcmsr_flush_adapter_cache(acb);
+	arcmsr_free_irq(pdev, acb);
+scsi_host_remove:
+	scsi_remove_host(host);
+free_ccb_pool:
+	arcmsr_free_ccb_pool(acb);
+	goto unmap_pci_region;
+free_hbb_mu:
+	arcmsr_free_io_queue(acb);
+unmap_pci_region:
+	arcmsr_unmap_pciregion(acb);
+pci_release_regs:
+	pci_release_regions(pdev);
+scsi_host_release:
+	scsi_host_put(host);
+pci_disable_dev:
+	pci_disable_device(pdev);
+	return -ENODEV;
+}
+
+static void arcmsr_free_irq(struct pci_dev *pdev,
+		struct AdapterControlBlock *acb)
+{
+	int i;
+
+	for (i = 0; i < acb->vector_count; i++)
+		free_irq(pci_irq_vector(pdev, i), acb);
+	pci_free_irq_vectors(pdev);
+}
+
+static int __maybe_unused arcmsr_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *)host->hostdata;
+
+	arcmsr_disable_outbound_ints(acb);
+	arcmsr_free_irq(pdev, acb);
+	del_timer_sync(&acb->eternal_timer);
+	if (set_date_time)
+		del_timer_sync(&acb->refresh_timer);
+	flush_work(&acb->arcmsr_do_message_isr_bh);
+	arcmsr_stop_adapter_bgrb(acb);
+	arcmsr_flush_adapter_cache(acb);
+	return 0;
+}
+
+static int __maybe_unused arcmsr_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *)host->hostdata;
+
+	if (arcmsr_set_dma_mask(acb))
+		goto controller_unregister;
+	if (arcmsr_request_irq(pdev, acb) == FAILED)
+		goto controller_stop;
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		uint32_t i;
+		for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
+			reg->post_qbuffer[i] = 0;
+			reg->done_qbuffer[i] = 0;
+		}
+		reg->postq_index = 0;
+		reg->doneq_index = 0;
+		break;
+		}
+	case ACB_ADAPTER_TYPE_E:
+		writel(0, &acb->pmuE->host_int_status);
+		writel(ARCMSR_HBEMU_DOORBELL_SYNC, &acb->pmuE->iobound_doorbell);
+		acb->in_doorbell = 0;
+		acb->out_doorbell = 0;
+		acb->doneq_index = 0;
+		break;
+	case ACB_ADAPTER_TYPE_F:
+		writel(0, &acb->pmuF->host_int_status);
+		writel(ARCMSR_HBFMU_DOORBELL_SYNC, &acb->pmuF->iobound_doorbell);
+		acb->in_doorbell = 0;
+		acb->out_doorbell = 0;
+		acb->doneq_index = 0;
+		arcmsr_hbaF_assign_regAddr(acb);
+		break;
+	}
+	arcmsr_iop_init(acb);
+	arcmsr_init_get_devmap_timer(acb);
+	if (set_date_time)
+		arcmsr_init_set_datetime_timer(acb);
+	return 0;
+controller_stop:
+	arcmsr_stop_adapter_bgrb(acb);
+	arcmsr_flush_adapter_cache(acb);
+controller_unregister:
+	scsi_remove_host(host);
+	arcmsr_free_ccb_pool(acb);
+	if (acb->adapter_type == ACB_ADAPTER_TYPE_F)
+		arcmsr_free_io_queue(acb);
+	arcmsr_unmap_pciregion(acb);
+	scsi_host_put(host);
+	return -ENODEV;
+}
+
+static uint8_t arcmsr_hbaA_abort_allcmd(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
+	if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'abort all outstanding command' timeout\n"
+			, acb->host->host_no);
+		return false;
+	}
+	return true;
+}
+
+static uint8_t arcmsr_hbaB_abort_allcmd(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+
+	writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell);
+	if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'abort all outstanding command' timeout\n"
+			, acb->host->host_no);
+		return false;
+	}
+	return true;
+}
+static uint8_t arcmsr_hbaC_abort_allcmd(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C __iomem *reg = pACB->pmuC;
+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'abort all outstanding command' timeout\n"
+			, pACB->host->host_no);
+		return false;
+	}
+	return true;
+}
+
+static uint8_t arcmsr_hbaD_abort_allcmd(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_D *reg = pACB->pmuD;
+
+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, reg->inbound_msgaddr0);
+	if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait 'abort all outstanding "
+			"command' timeout\n", pACB->host->host_no);
+		return false;
+	}
+	return true;
+}
+
+static uint8_t arcmsr_hbaE_abort_allcmd(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_E __iomem *reg = pACB->pmuE;
+
+	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &reg->iobound_doorbell);
+	if (!arcmsr_hbaE_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait 'abort all outstanding "
+			"command' timeout\n", pACB->host->host_no);
+		return false;
+	}
+	return true;
+}
+
+static uint8_t arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
+{
+	uint8_t rtnval = 0;
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		rtnval = arcmsr_hbaA_abort_allcmd(acb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		rtnval = arcmsr_hbaB_abort_allcmd(acb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		rtnval = arcmsr_hbaC_abort_allcmd(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		rtnval = arcmsr_hbaD_abort_allcmd(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		rtnval = arcmsr_hbaE_abort_allcmd(acb);
+		break;
+	}
+	return rtnval;
+}
+
+static void arcmsr_ccb_complete(struct CommandControlBlock *ccb)
+{
+	struct AdapterControlBlock *acb = ccb->acb;
+	struct scsi_cmnd *pcmd = ccb->pcmd;
+	unsigned long flags;
+	atomic_dec(&acb->ccboutstandingcount);
+	scsi_dma_unmap(ccb->pcmd);
+	ccb->startdone = ARCMSR_CCB_DONE;
+	spin_lock_irqsave(&acb->ccblist_lock, flags);
+	list_add_tail(&ccb->list, &acb->ccb_free_list);
+	spin_unlock_irqrestore(&acb->ccblist_lock, flags);
+	scsi_done(pcmd);
+}
+
+static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
+{
+	struct scsi_cmnd *pcmd = ccb->pcmd;
+
+	pcmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION;
+	if (pcmd->sense_buffer) {
+		struct SENSE_DATA *sensebuffer;
+
+		memcpy_and_pad(pcmd->sense_buffer,
+			       SCSI_SENSE_BUFFERSIZE,
+			       ccb->arcmsr_cdb.SenseData,
+			       sizeof(ccb->arcmsr_cdb.SenseData),
+			       0);
+
+		sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
+		sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
+		sensebuffer->Valid = 1;
+	}
+}
+
+static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
+{
+	u32 orig_mask = 0;
+	switch (acb->adapter_type) {	
+	case ACB_ADAPTER_TYPE_A : {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		orig_mask = readl(&reg->outbound_intmask);
+		writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
+						&reg->outbound_intmask);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_B : {
+		struct MessageUnit_B *reg = acb->pmuB;
+		orig_mask = readl(reg->iop2drv_doorbell_mask);
+		writel(0, reg->iop2drv_doorbell_mask);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C:{
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		/* disable all outbound interrupt */
+		orig_mask = readl(&reg->host_int_mask); /* disable outbound message0 int */
+		writel(orig_mask|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		/* disable all outbound interrupt */
+		writel(ARCMSR_ARC1214_ALL_INT_DISABLE, reg->pcief0_int_enable);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		orig_mask = readl(&reg->host_int_mask);
+		writel(orig_mask | ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR | ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR, &reg->host_int_mask);
+		readl(&reg->host_int_mask); /* Dummy readl to force pci flush */
+		}
+		break;
+	}
+	return orig_mask;
+}
+
+static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, 
+			struct CommandControlBlock *ccb, bool error)
+{
+	uint8_t id, lun;
+	id = ccb->pcmd->device->id;
+	lun = ccb->pcmd->device->lun;
+	if (!error) {
+		if (acb->devstate[id][lun] == ARECA_RAID_GONE)
+			acb->devstate[id][lun] = ARECA_RAID_GOOD;
+		ccb->pcmd->result = DID_OK << 16;
+		arcmsr_ccb_complete(ccb);
+	}else{
+		switch (ccb->arcmsr_cdb.DeviceStatus) {
+		case ARCMSR_DEV_SELECT_TIMEOUT: {
+			acb->devstate[id][lun] = ARECA_RAID_GONE;
+			ccb->pcmd->result = DID_NO_CONNECT << 16;
+			arcmsr_ccb_complete(ccb);
+			}
+			break;
+
+		case ARCMSR_DEV_ABORTED:
+
+		case ARCMSR_DEV_INIT_FAIL: {
+			acb->devstate[id][lun] = ARECA_RAID_GONE;
+			ccb->pcmd->result = DID_BAD_TARGET << 16;
+			arcmsr_ccb_complete(ccb);
+			}
+			break;
+
+		case ARCMSR_DEV_CHECK_CONDITION: {
+			acb->devstate[id][lun] = ARECA_RAID_GOOD;
+			arcmsr_report_sense_info(ccb);
+			arcmsr_ccb_complete(ccb);
+			}
+			break;
+
+		default:
+			printk(KERN_NOTICE
+				"arcmsr%d: scsi id = %d lun = %d isr get command error done, \
+				but got unknown DeviceStatus = 0x%x \n"
+				, acb->host->host_no
+				, id
+				, lun
+				, ccb->arcmsr_cdb.DeviceStatus);
+				acb->devstate[id][lun] = ARECA_RAID_GONE;
+				ccb->pcmd->result = DID_NO_CONNECT << 16;
+				arcmsr_ccb_complete(ccb);
+			break;
+		}
+	}
+}
+
+static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, struct CommandControlBlock *pCCB, bool error)
+{
+	if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
+		if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+			struct scsi_cmnd *abortcmd = pCCB->pcmd;
+			if (abortcmd) {
+				abortcmd->result |= DID_ABORT << 16;
+				arcmsr_ccb_complete(pCCB);
+				printk(KERN_NOTICE "arcmsr%d: pCCB ='0x%p' isr got aborted command \n",
+				acb->host->host_no, pCCB);
+			}
+			return;
+		}
+		printk(KERN_NOTICE "arcmsr%d: isr get an illegal ccb command \
+				done acb = '0x%p'"
+				"ccb = '0x%p' ccbacb = '0x%p' startdone = 0x%x"
+				" ccboutstandingcount = %d \n"
+				, acb->host->host_no
+				, acb
+				, pCCB
+				, pCCB->acb
+				, pCCB->startdone
+				, atomic_read(&acb->ccboutstandingcount));
+		return;
+	}
+	arcmsr_report_ccb_state(acb, pCCB, error);
+}
+
+static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
+{
+	int i = 0;
+	uint32_t flag_ccb;
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	bool error;
+	struct CommandControlBlock *pCCB;
+	unsigned long ccb_cdb_phy;
+
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		uint32_t outbound_intstatus;
+		outbound_intstatus = readl(&reg->outbound_intstatus) &
+					acb->outbound_int_enable;
+		/*clear and abort all outbound posted Q*/
+		writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
+		while(((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF)
+				&& (i++ < acb->maxOutstanding)) {
+			ccb_cdb_phy = (flag_ccb << 5) & 0xffffffff;
+			if (acb->cdb_phyadd_hipart)
+				ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+			pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+			pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+			error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+			arcmsr_drain_donequeue(acb, pCCB, error);
+		}
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		/*clear all outbound posted Q*/
+		writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell); /* clear doorbell interrupt */
+		for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
+			flag_ccb = reg->done_qbuffer[i];
+			if (flag_ccb != 0) {
+				reg->done_qbuffer[i] = 0;
+				ccb_cdb_phy = (flag_ccb << 5) & 0xffffffff;
+				if (acb->cdb_phyadd_hipart)
+					ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+				pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+				pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+				error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+				arcmsr_drain_donequeue(acb, pCCB, error);
+			}
+			reg->post_qbuffer[i] = 0;
+		}
+		reg->doneq_index = 0;
+		reg->postq_index = 0;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		while ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) && (i++ < acb->maxOutstanding)) {
+			/*need to do*/
+			flag_ccb = readl(&reg->outbound_queueport_low);
+			ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+			if (acb->cdb_phyadd_hipart)
+				ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+			pARCMSR_CDB = (struct  ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+			pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+			error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+			arcmsr_drain_donequeue(acb, pCCB, error);
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D  *pmu = acb->pmuD;
+		uint32_t outbound_write_pointer;
+		uint32_t doneq_index, index_stripped, addressLow, residual, toggle;
+		unsigned long flags;
+
+		residual = atomic_read(&acb->ccboutstandingcount);
+		for (i = 0; i < residual; i++) {
+			spin_lock_irqsave(&acb->doneq_lock, flags);
+			outbound_write_pointer =
+				pmu->done_qbuffer[0].addressLow + 1;
+			doneq_index = pmu->doneq_index;
+			if ((doneq_index & 0xFFF) !=
+				(outbound_write_pointer & 0xFFF)) {
+				toggle = doneq_index & 0x4000;
+				index_stripped = (doneq_index & 0xFFF) + 1;
+				index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
+				pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
+					((toggle ^ 0x4000) + 1);
+				doneq_index = pmu->doneq_index;
+				spin_unlock_irqrestore(&acb->doneq_lock, flags);
+				addressLow = pmu->done_qbuffer[doneq_index &
+					0xFFF].addressLow;
+				ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
+				if (acb->cdb_phyadd_hipart)
+					ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+				pARCMSR_CDB = (struct  ARCMSR_CDB *)
+					(acb->vir2phy_offset + ccb_cdb_phy);
+				pCCB = container_of(pARCMSR_CDB,
+					struct CommandControlBlock, arcmsr_cdb);
+				error = (addressLow &
+					ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ?
+					true : false;
+				arcmsr_drain_donequeue(acb, pCCB, error);
+				writel(doneq_index,
+					pmu->outboundlist_read_pointer);
+			} else {
+				spin_unlock_irqrestore(&acb->doneq_lock, flags);
+				mdelay(10);
+			}
+		}
+		pmu->postq_index = 0;
+		pmu->doneq_index = 0x40FF;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+		arcmsr_hbaE_postqueue_isr(acb);
+		break;
+	case ACB_ADAPTER_TYPE_F:
+		arcmsr_hbaF_postqueue_isr(acb);
+		break;
+	}
+}
+
+static void arcmsr_remove_scsi_devices(struct AdapterControlBlock *acb)
+{
+	char *acb_dev_map = (char *)acb->device_map;
+	int target, lun, i;
+	struct scsi_device *psdev;
+	struct CommandControlBlock *ccb;
+	char temp;
+
+	for (i = 0; i < acb->maxFreeCCB; i++) {
+		ccb = acb->pccb_pool[i];
+		if (ccb->startdone == ARCMSR_CCB_START) {
+			ccb->pcmd->result = DID_NO_CONNECT << 16;
+			scsi_dma_unmap(ccb->pcmd);
+			scsi_done(ccb->pcmd);
+		}
+	}
+	for (target = 0; target < ARCMSR_MAX_TARGETID; target++) {
+		temp = *acb_dev_map;
+		if (temp) {
+			for (lun = 0; lun < ARCMSR_MAX_TARGETLUN; lun++) {
+				if (temp & 1) {
+					psdev = scsi_device_lookup(acb->host,
+						0, target, lun);
+					if (psdev != NULL) {
+						scsi_remove_device(psdev);
+						scsi_device_put(psdev);
+					}
+				}
+				temp >>= 1;
+			}
+			*acb_dev_map = 0;
+		}
+		acb_dev_map++;
+	}
+}
+
+static void arcmsr_free_pcidev(struct AdapterControlBlock *acb)
+{
+	struct pci_dev *pdev;
+	struct Scsi_Host *host;
+
+	host = acb->host;
+	arcmsr_free_sysfs_attr(acb);
+	scsi_remove_host(host);
+	flush_work(&acb->arcmsr_do_message_isr_bh);
+	del_timer_sync(&acb->eternal_timer);
+	if (set_date_time)
+		del_timer_sync(&acb->refresh_timer);
+	pdev = acb->pdev;
+	arcmsr_free_irq(pdev, acb);
+	arcmsr_free_ccb_pool(acb);
+	if (acb->adapter_type == ACB_ADAPTER_TYPE_F)
+		arcmsr_free_io_queue(acb);
+	arcmsr_unmap_pciregion(acb);
+	pci_release_regions(pdev);
+	scsi_host_put(host);
+	pci_disable_device(pdev);
+}
+
+static void arcmsr_remove(struct pci_dev *pdev)
+{
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *) host->hostdata;
+	int poll_count = 0;
+	uint16_t dev_id;
+
+	pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
+	if (dev_id == 0xffff) {
+		acb->acb_flags &= ~ACB_F_IOP_INITED;
+		acb->acb_flags |= ACB_F_ADAPTER_REMOVED;
+		arcmsr_remove_scsi_devices(acb);
+		arcmsr_free_pcidev(acb);
+		return;
+	}
+	arcmsr_free_sysfs_attr(acb);
+	scsi_remove_host(host);
+	flush_work(&acb->arcmsr_do_message_isr_bh);
+	del_timer_sync(&acb->eternal_timer);
+	if (set_date_time)
+		del_timer_sync(&acb->refresh_timer);
+	arcmsr_disable_outbound_ints(acb);
+	arcmsr_stop_adapter_bgrb(acb);
+	arcmsr_flush_adapter_cache(acb);	
+	acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
+	acb->acb_flags &= ~ACB_F_IOP_INITED;
+
+	for (poll_count = 0; poll_count < acb->maxOutstanding; poll_count++){
+		if (!atomic_read(&acb->ccboutstandingcount))
+			break;
+		arcmsr_interrupt(acb);/* FIXME: need spinlock */
+		msleep(25);
+	}
+
+	if (atomic_read(&acb->ccboutstandingcount)) {
+		int i;
+
+		arcmsr_abort_allcmd(acb);
+		arcmsr_done4abort_postqueue(acb);
+		for (i = 0; i < acb->maxFreeCCB; i++) {
+			struct CommandControlBlock *ccb = acb->pccb_pool[i];
+			if (ccb->startdone == ARCMSR_CCB_START) {
+				ccb->startdone = ARCMSR_CCB_ABORTED;
+				ccb->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(ccb);
+			}
+		}
+	}
+	arcmsr_free_irq(pdev, acb);
+	arcmsr_free_ccb_pool(acb);
+	if (acb->adapter_type == ACB_ADAPTER_TYPE_F)
+		arcmsr_free_io_queue(acb);
+	arcmsr_unmap_pciregion(acb);
+	pci_release_regions(pdev);
+	scsi_host_put(host);
+	pci_disable_device(pdev);
+}
+
+static void arcmsr_shutdown(struct pci_dev *pdev)
+{
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *)host->hostdata;
+	if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+		return;
+	del_timer_sync(&acb->eternal_timer);
+	if (set_date_time)
+		del_timer_sync(&acb->refresh_timer);
+	arcmsr_disable_outbound_ints(acb);
+	arcmsr_free_irq(pdev, acb);
+	flush_work(&acb->arcmsr_do_message_isr_bh);
+	arcmsr_stop_adapter_bgrb(acb);
+	arcmsr_flush_adapter_cache(acb);
+}
+
+static int __init arcmsr_module_init(void)
+{
+	int error = 0;
+	error = pci_register_driver(&arcmsr_pci_driver);
+	return error;
+}
+
+static void __exit arcmsr_module_exit(void)
+{
+	pci_unregister_driver(&arcmsr_pci_driver);
+}
+module_init(arcmsr_module_init);
+module_exit(arcmsr_module_exit);
+
+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
+						u32 intmask_org)
+{
+	u32 mask;
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
+			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE|
+			     ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE);
+		writel(mask, &reg->outbound_intmask);
+		acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK |
+			ARCMSR_IOP2DRV_DATA_READ_OK |
+			ARCMSR_IOP2DRV_CDB_DONE |
+			ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
+		writel(mask, reg->iop2drv_doorbell_mask);
+		acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		mask = ~(ARCMSR_HBCMU_UTILITY_A_ISR_MASK | ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK|ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK);
+		writel(intmask_org & mask, &reg->host_int_mask);
+		acb->outbound_int_enable = ~(intmask_org & mask) & 0x0000000f;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+
+		mask = ARCMSR_ARC1214_ALL_INT_ENABLE;
+		writel(intmask_org | mask, reg->pcief0_int_enable);
+		break;
+		}
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+
+		mask = ~(ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR | ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR);
+		writel(intmask_org & mask, &reg->host_int_mask);
+		break;
+		}
+	}
+}
+
+static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
+	struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
+{
+	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
+	int8_t *psge = (int8_t *)&arcmsr_cdb->u;
+	__le32 address_lo, address_hi;
+	int arccdbsize = 0x30;
+	__le32 length = 0;
+	int i;
+	struct scatterlist *sg;
+	int nseg;
+	ccb->pcmd = pcmd;
+	memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
+	arcmsr_cdb->TargetID = pcmd->device->id;
+	arcmsr_cdb->LUN = pcmd->device->lun;
+	arcmsr_cdb->Function = 1;
+	arcmsr_cdb->msgContext = 0;
+	memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
+
+	nseg = scsi_dma_map(pcmd);
+	if (unlikely(nseg > acb->host->sg_tablesize || nseg < 0))
+		return FAILED;
+	scsi_for_each_sg(pcmd, sg, nseg, i) {
+		/* Get the physical address of the current data pointer */
+		length = cpu_to_le32(sg_dma_len(sg));
+		address_lo = cpu_to_le32(dma_addr_lo32(sg_dma_address(sg)));
+		address_hi = cpu_to_le32(dma_addr_hi32(sg_dma_address(sg)));
+		if (address_hi == 0) {
+			struct SG32ENTRY *pdma_sg = (struct SG32ENTRY *)psge;
+
+			pdma_sg->address = address_lo;
+			pdma_sg->length = length;
+			psge += sizeof (struct SG32ENTRY);
+			arccdbsize += sizeof (struct SG32ENTRY);
+		} else {
+			struct SG64ENTRY *pdma_sg = (struct SG64ENTRY *)psge;
+
+			pdma_sg->addresshigh = address_hi;
+			pdma_sg->address = address_lo;
+			pdma_sg->length = length|cpu_to_le32(IS_SG64_ADDR);
+			psge += sizeof (struct SG64ENTRY);
+			arccdbsize += sizeof (struct SG64ENTRY);
+		}
+	}
+	arcmsr_cdb->sgcount = (uint8_t)nseg;
+	arcmsr_cdb->DataLength = scsi_bufflen(pcmd);
+	arcmsr_cdb->msgPages = arccdbsize/0x100 + (arccdbsize % 0x100 ? 1 : 0);
+	if ( arccdbsize > 256)
+		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_SGL_BSIZE;
+	if (pcmd->sc_data_direction == DMA_TO_DEVICE)
+		arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
+	ccb->arc_cdb_size = arccdbsize;
+	return SUCCESS;
+}
+
+static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
+{
+	uint32_t cdb_phyaddr = ccb->cdb_phyaddr;
+	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
+	atomic_inc(&acb->ccboutstandingcount);
+	ccb->startdone = ARCMSR_CCB_START;
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+
+		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
+			writel(cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
+			&reg->inbound_queueport);
+		else
+			writel(cdb_phyaddr, &reg->inbound_queueport);
+		break;
+	}
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		uint32_t ending_index, index = reg->postq_index;
+
+		ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
+		reg->post_qbuffer[ending_index] = 0;
+		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
+			reg->post_qbuffer[index] =
+				cdb_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE;
+		} else {
+			reg->post_qbuffer[index] = cdb_phyaddr;
+		}
+		index++;
+		index %= ARCMSR_MAX_HBB_POSTQUEUE;/*if last index number set it to 0 */
+		reg->postq_index = index;
+		writel(ARCMSR_DRV2IOP_CDB_POSTED, reg->drv2iop_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
+		uint32_t ccb_post_stamp, arc_cdb_size;
+
+		arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
+		ccb_post_stamp = (cdb_phyaddr | ((arc_cdb_size - 1) >> 6) | 1);
+		writel(upper_32_bits(ccb->cdb_phyaddr), &phbcmu->inbound_queueport_high);
+		writel(ccb_post_stamp, &phbcmu->inbound_queueport_low);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D  *pmu = acb->pmuD;
+		u16 index_stripped;
+		u16 postq_index, toggle;
+		unsigned long flags;
+		struct InBound_SRB *pinbound_srb;
+
+		spin_lock_irqsave(&acb->postq_lock, flags);
+		postq_index = pmu->postq_index;
+		pinbound_srb = (struct InBound_SRB *)&(pmu->post_qbuffer[postq_index & 0xFF]);
+		pinbound_srb->addressHigh = upper_32_bits(ccb->cdb_phyaddr);
+		pinbound_srb->addressLow = cdb_phyaddr;
+		pinbound_srb->length = ccb->arc_cdb_size >> 2;
+		arcmsr_cdb->msgContext = dma_addr_lo32(cdb_phyaddr);
+		toggle = postq_index & 0x4000;
+		index_stripped = postq_index + 1;
+		index_stripped &= (ARCMSR_MAX_ARC1214_POSTQUEUE - 1);
+		pmu->postq_index = index_stripped ? (index_stripped | toggle) :
+			(toggle ^ 0x4000);
+		writel(postq_index, pmu->inboundlist_write_pointer);
+		spin_unlock_irqrestore(&acb->postq_lock, flags);
+		break;
+		}
+	case ACB_ADAPTER_TYPE_E: {
+		struct MessageUnit_E __iomem *pmu = acb->pmuE;
+		u32 ccb_post_stamp, arc_cdb_size;
+
+		arc_cdb_size = (ccb->arc_cdb_size > 0x300) ? 0x300 : ccb->arc_cdb_size;
+		ccb_post_stamp = (ccb->smid | ((arc_cdb_size - 1) >> 6));
+		writel(0, &pmu->inbound_queueport_high);
+		writel(ccb_post_stamp, &pmu->inbound_queueport_low);
+		break;
+		}
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_F __iomem *pmu = acb->pmuF;
+		u32 ccb_post_stamp, arc_cdb_size;
+
+		if (ccb->arc_cdb_size <= 0x300)
+			arc_cdb_size = (ccb->arc_cdb_size - 1) >> 6 | 1;
+		else {
+			arc_cdb_size = ((ccb->arc_cdb_size + 0xff) >> 8) + 2;
+			if (arc_cdb_size > 0xF)
+				arc_cdb_size = 0xF;
+			arc_cdb_size = (arc_cdb_size << 1) | 1;
+		}
+		ccb_post_stamp = (ccb->smid | arc_cdb_size);
+		writel(0, &pmu->inbound_queueport_high);
+		writel(ccb_post_stamp, &pmu->inbound_queueport_low);
+		break;
+		}
+	}
+}
+
+static void arcmsr_hbaA_stop_bgrb(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
+	if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'stop adapter background rebuild' timeout\n"
+			, acb->host->host_no);
+	}
+}
+
+static void arcmsr_hbaB_stop_bgrb(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell);
+
+	if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'stop adapter background rebuild' timeout\n"
+			, acb->host->host_no);
+	}
+}
+
+static void arcmsr_hbaC_stop_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C __iomem *reg = pACB->pmuC;
+	pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'stop adapter background rebuild' timeout\n"
+			, pACB->host->host_no);
+	}
+	return;
+}
+
+static void arcmsr_hbaD_stop_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_D *reg = pACB->pmuD;
+
+	pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, reg->inbound_msgaddr0);
+	if (!arcmsr_hbaD_wait_msgint_ready(pACB))
+		pr_notice("arcmsr%d: wait 'stop adapter background rebuild' "
+			"timeout\n", pACB->host->host_no);
+}
+
+static void arcmsr_hbaE_stop_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_E __iomem *reg = pACB->pmuE;
+
+	pACB->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &reg->iobound_doorbell);
+	if (!arcmsr_hbaE_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait 'stop adapter background rebuild' "
+			"timeout\n", pACB->host->host_no);
+	}
+}
+
+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		arcmsr_hbaA_stop_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		arcmsr_hbaB_stop_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		arcmsr_hbaC_stop_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		arcmsr_hbaD_stop_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		arcmsr_hbaE_stop_bgrb(acb);
+		break;
+	}
+}
+
+static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
+{
+	dma_free_coherent(&acb->pdev->dev, acb->uncache_size, acb->dma_coherent, acb->dma_coherent_handle);
+}
+
+static void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
+			reg->inbound_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_READ_OK;
+		writel(acb->out_doorbell, &reg->iobound_doorbell);
+		}
+		break;
+	}
+}
+
+static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		/*
+		** push inbound doorbell tell iop, driver data write ok
+		** and wait reply on next hwinterrupt for next Qbuffer post
+		*/
+		writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK, &reg->inbound_doorbell);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		/*
+		** push inbound doorbell tell iop, driver data write ok
+		** and wait reply on next hwinterrupt for next Qbuffer post
+		*/
+		writel(ARCMSR_DRV2IOP_DATA_WRITE_OK, reg->drv2iop_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		/*
+		** push inbound doorbell tell iop, driver data write ok
+		** and wait reply on next hwinterrupt for next Qbuffer post
+		*/
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK, &reg->inbound_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		writel(ARCMSR_ARC1214_DRV2IOP_DATA_IN_READY,
+			reg->inbound_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_WRITE_OK;
+		writel(acb->out_doorbell, &reg->iobound_doorbell);
+		}
+		break;
+	}
+}
+
+struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *acb)
+{
+	struct QBUFFER __iomem *qbuffer = NULL;
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *phbcmu = acb->pmuC;
+		qbuffer = (struct QBUFFER __iomem *)&phbcmu->message_rbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		qbuffer = (struct QBUFFER __iomem *)reg->message_rbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		qbuffer = (struct QBUFFER __iomem *)&reg->message_rbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_F: {
+		qbuffer = (struct QBUFFER __iomem *)acb->message_rbuffer;
+		}
+		break;
+	}
+	return qbuffer;
+}
+
+static struct QBUFFER __iomem *arcmsr_get_iop_wqbuffer(struct AdapterControlBlock *acb)
+{
+	struct QBUFFER __iomem *pqbuffer = NULL;
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		pqbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B  *reg = acb->pmuB;
+		pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		pqbuffer = (struct QBUFFER __iomem *)reg->message_wbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		pqbuffer = (struct QBUFFER __iomem *)&reg->message_wbuffer;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_F:
+		pqbuffer = (struct QBUFFER __iomem *)acb->message_wbuffer;
+		break;
+	}
+	return pqbuffer;
+}
+
+static uint32_t
+arcmsr_Read_iop_rqbuffer_in_DWORD(struct AdapterControlBlock *acb,
+		struct QBUFFER __iomem *prbuffer)
+{
+	uint8_t *pQbuffer;
+	uint8_t *buf1 = NULL;
+	uint32_t __iomem *iop_data;
+	uint32_t iop_len, data_len, *buf2 = NULL;
+
+	iop_data = (uint32_t __iomem *)prbuffer->data;
+	iop_len = readl(&prbuffer->data_len);
+	if (iop_len > 0) {
+		buf1 = kmalloc(128, GFP_ATOMIC);
+		buf2 = (uint32_t *)buf1;
+		if (buf1 == NULL)
+			return 0;
+		data_len = iop_len;
+		while (data_len >= 4) {
+			*buf2++ = readl(iop_data);
+			iop_data++;
+			data_len -= 4;
+		}
+		if (data_len)
+			*buf2 = readl(iop_data);
+		buf2 = (uint32_t *)buf1;
+	}
+	while (iop_len > 0) {
+		pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
+		*pQbuffer = *buf1;
+		acb->rqbuf_putIndex++;
+		/* if last, index number set it to 0 */
+		acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
+		buf1++;
+		iop_len--;
+	}
+	kfree(buf2);
+	/* let IOP know data has been read */
+	arcmsr_iop_message_read(acb);
+	return 1;
+}
+
+uint32_t
+arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
+	struct QBUFFER __iomem *prbuffer) {
+
+	uint8_t *pQbuffer;
+	uint8_t __iomem *iop_data;
+	uint32_t iop_len;
+
+	if (acb->adapter_type > ACB_ADAPTER_TYPE_B)
+		return arcmsr_Read_iop_rqbuffer_in_DWORD(acb, prbuffer);
+	iop_data = (uint8_t __iomem *)prbuffer->data;
+	iop_len = readl(&prbuffer->data_len);
+	while (iop_len > 0) {
+		pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
+		*pQbuffer = readb(iop_data);
+		acb->rqbuf_putIndex++;
+		acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
+		iop_data++;
+		iop_len--;
+	}
+	arcmsr_iop_message_read(acb);
+	return 1;
+}
+
+static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
+{
+	unsigned long flags;
+	struct QBUFFER __iomem  *prbuffer;
+	int32_t buf_empty_len;
+
+	spin_lock_irqsave(&acb->rqbuffer_lock, flags);
+	prbuffer = arcmsr_get_iop_rqbuffer(acb);
+	if (acb->rqbuf_putIndex >= acb->rqbuf_getIndex) {
+		buf_empty_len = (ARCMSR_MAX_QBUFFER - 1) -
+		(acb->rqbuf_putIndex - acb->rqbuf_getIndex);
+	} else
+		buf_empty_len = acb->rqbuf_getIndex - acb->rqbuf_putIndex - 1;
+	if (buf_empty_len >= readl(&prbuffer->data_len)) {
+		if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
+			acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
+	} else
+		acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
+	spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
+}
+
+static void arcmsr_write_ioctldata2iop_in_DWORD(struct AdapterControlBlock *acb)
+{
+	uint8_t *pQbuffer;
+	struct QBUFFER __iomem *pwbuffer;
+	uint8_t *buf1 = NULL;
+	uint32_t __iomem *iop_data;
+	uint32_t allxfer_len = 0, data_len, *buf2 = NULL, data;
+
+	if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
+		buf1 = kmalloc(128, GFP_ATOMIC);
+		buf2 = (uint32_t *)buf1;
+		if (buf1 == NULL)
+			return;
+
+		acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
+		pwbuffer = arcmsr_get_iop_wqbuffer(acb);
+		iop_data = (uint32_t __iomem *)pwbuffer->data;
+		while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
+			&& (allxfer_len < 124)) {
+			pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
+			*buf1 = *pQbuffer;
+			acb->wqbuf_getIndex++;
+			acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
+			buf1++;
+			allxfer_len++;
+		}
+		data_len = allxfer_len;
+		buf1 = (uint8_t *)buf2;
+		while (data_len >= 4) {
+			data = *buf2++;
+			writel(data, iop_data);
+			iop_data++;
+			data_len -= 4;
+		}
+		if (data_len) {
+			data = *buf2;
+			writel(data, iop_data);
+		}
+		writel(allxfer_len, &pwbuffer->data_len);
+		kfree(buf1);
+		arcmsr_iop_message_wrote(acb);
+	}
+}
+
+void
+arcmsr_write_ioctldata2iop(struct AdapterControlBlock *acb)
+{
+	uint8_t *pQbuffer;
+	struct QBUFFER __iomem *pwbuffer;
+	uint8_t __iomem *iop_data;
+	int32_t allxfer_len = 0;
+
+	if (acb->adapter_type > ACB_ADAPTER_TYPE_B) {
+		arcmsr_write_ioctldata2iop_in_DWORD(acb);
+		return;
+	}
+	if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
+		acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
+		pwbuffer = arcmsr_get_iop_wqbuffer(acb);
+		iop_data = (uint8_t __iomem *)pwbuffer->data;
+		while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
+			&& (allxfer_len < 124)) {
+			pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
+			writeb(*pQbuffer, iop_data);
+			acb->wqbuf_getIndex++;
+			acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
+			iop_data++;
+			allxfer_len++;
+		}
+		writel(allxfer_len, &pwbuffer->data_len);
+		arcmsr_iop_message_wrote(acb);
+	}
+}
+
+static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&acb->wqbuffer_lock, flags);
+	acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
+	if (acb->wqbuf_getIndex != acb->wqbuf_putIndex)
+		arcmsr_write_ioctldata2iop(acb);
+	if (acb->wqbuf_getIndex == acb->wqbuf_putIndex)
+		acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
+	spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
+}
+
+static void arcmsr_hbaA_doorbell_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t outbound_doorbell;
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	outbound_doorbell = readl(&reg->outbound_doorbell);
+	do {
+		writel(outbound_doorbell, &reg->outbound_doorbell);
+		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK)
+			arcmsr_iop2drv_data_wrote_handle(acb);
+		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK)
+			arcmsr_iop2drv_data_read_handle(acb);
+		outbound_doorbell = readl(&reg->outbound_doorbell);
+	} while (outbound_doorbell & (ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK
+		| ARCMSR_OUTBOUND_IOP331_DATA_READ_OK));
+}
+static void arcmsr_hbaC_doorbell_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t outbound_doorbell;
+	struct MessageUnit_C __iomem *reg = pACB->pmuC;
+	/*
+	*******************************************************************
+	**  Maybe here we need to check wrqbuffer_lock is lock or not
+	**  DOORBELL: din! don!
+	**  check if there are any mail need to pack from firmware
+	*******************************************************************
+	*/
+	outbound_doorbell = readl(&reg->outbound_doorbell);
+	do {
+		writel(outbound_doorbell, &reg->outbound_doorbell_clear);
+		readl(&reg->outbound_doorbell_clear);
+		if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK)
+			arcmsr_iop2drv_data_wrote_handle(pACB);
+		if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK)
+			arcmsr_iop2drv_data_read_handle(pACB);
+		if (outbound_doorbell & ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE)
+			arcmsr_hbaC_message_isr(pACB);
+		outbound_doorbell = readl(&reg->outbound_doorbell);
+	} while (outbound_doorbell & (ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK
+		| ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK
+		| ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE));
+}
+
+static void arcmsr_hbaD_doorbell_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t outbound_doorbell;
+	struct MessageUnit_D  *pmu = pACB->pmuD;
+
+	outbound_doorbell = readl(pmu->outbound_doorbell);
+	do {
+		writel(outbound_doorbell, pmu->outbound_doorbell);
+		if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE)
+			arcmsr_hbaD_message_isr(pACB);
+		if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK)
+			arcmsr_iop2drv_data_wrote_handle(pACB);
+		if (outbound_doorbell & ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK)
+			arcmsr_iop2drv_data_read_handle(pACB);
+		outbound_doorbell = readl(pmu->outbound_doorbell);
+	} while (outbound_doorbell & (ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK
+		| ARCMSR_ARC1214_IOP2DRV_DATA_READ_OK
+		| ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE));
+}
+
+static void arcmsr_hbaE_doorbell_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t outbound_doorbell, in_doorbell, tmp, i;
+	struct MessageUnit_E __iomem *reg = pACB->pmuE;
+
+	if (pACB->adapter_type == ACB_ADAPTER_TYPE_F) {
+		for (i = 0; i < 5; i++) {
+			in_doorbell = readl(&reg->iobound_doorbell);
+			if (in_doorbell != 0)
+				break;
+		}
+	} else
+		in_doorbell = readl(&reg->iobound_doorbell);
+	outbound_doorbell = in_doorbell ^ pACB->in_doorbell;
+	do {
+		writel(0, &reg->host_int_status); /* clear interrupt */
+		if (outbound_doorbell & ARCMSR_HBEMU_IOP2DRV_DATA_WRITE_OK) {
+			arcmsr_iop2drv_data_wrote_handle(pACB);
+		}
+		if (outbound_doorbell & ARCMSR_HBEMU_IOP2DRV_DATA_READ_OK) {
+			arcmsr_iop2drv_data_read_handle(pACB);
+		}
+		if (outbound_doorbell & ARCMSR_HBEMU_IOP2DRV_MESSAGE_CMD_DONE) {
+			arcmsr_hbaE_message_isr(pACB);
+		}
+		tmp = in_doorbell;
+		in_doorbell = readl(&reg->iobound_doorbell);
+		outbound_doorbell = tmp ^ in_doorbell;
+	} while (outbound_doorbell & (ARCMSR_HBEMU_IOP2DRV_DATA_WRITE_OK
+		| ARCMSR_HBEMU_IOP2DRV_DATA_READ_OK
+		| ARCMSR_HBEMU_IOP2DRV_MESSAGE_CMD_DONE));
+	pACB->in_doorbell = in_doorbell;
+}
+
+static void arcmsr_hbaA_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t flag_ccb;
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	struct CommandControlBlock *pCCB;
+	bool error;
+	unsigned long cdb_phy_addr;
+
+	while ((flag_ccb = readl(&reg->outbound_queueport)) != 0xFFFFFFFF) {
+		cdb_phy_addr = (flag_ccb << 5) & 0xffffffff;
+		if (acb->cdb_phyadd_hipart)
+			cdb_phy_addr = cdb_phy_addr | acb->cdb_phyadd_hipart;
+		pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + cdb_phy_addr);
+		pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_drain_donequeue(acb, pCCB, error);
+	}
+}
+static void arcmsr_hbaB_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t index;
+	uint32_t flag_ccb;
+	struct MessageUnit_B *reg = acb->pmuB;
+	struct ARCMSR_CDB *pARCMSR_CDB;
+	struct CommandControlBlock *pCCB;
+	bool error;
+	unsigned long cdb_phy_addr;
+
+	index = reg->doneq_index;
+	while ((flag_ccb = reg->done_qbuffer[index]) != 0) {
+		cdb_phy_addr = (flag_ccb << 5) & 0xffffffff;
+		if (acb->cdb_phyadd_hipart)
+			cdb_phy_addr = cdb_phy_addr | acb->cdb_phyadd_hipart;
+		pARCMSR_CDB = (struct ARCMSR_CDB *)(acb->vir2phy_offset + cdb_phy_addr);
+		pCCB = container_of(pARCMSR_CDB, struct CommandControlBlock, arcmsr_cdb);
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_drain_donequeue(acb, pCCB, error);
+		reg->done_qbuffer[index] = 0;
+		index++;
+		index %= ARCMSR_MAX_HBB_POSTQUEUE;
+		reg->doneq_index = index;
+	}
+}
+
+static void arcmsr_hbaC_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_C __iomem *phbcmu;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	struct CommandControlBlock *ccb;
+	uint32_t flag_ccb, throttling = 0;
+	unsigned long ccb_cdb_phy;
+	int error;
+
+	phbcmu = acb->pmuC;
+	/* areca cdb command done */
+	/* Use correct offset and size for syncing */
+
+	while ((flag_ccb = readl(&phbcmu->outbound_queueport_low)) !=
+			0xFFFFFFFF) {
+		ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+		if (acb->cdb_phyadd_hipart)
+			ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
+			+ ccb_cdb_phy);
+		ccb = container_of(arcmsr_cdb, struct CommandControlBlock,
+			arcmsr_cdb);
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
+			? true : false;
+		/* check if command done with no error */
+		arcmsr_drain_donequeue(acb, ccb, error);
+		throttling++;
+		if (throttling == ARCMSR_HBC_ISR_THROTTLING_LEVEL) {
+			writel(ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING,
+				&phbcmu->inbound_doorbell);
+			throttling = 0;
+		}
+	}
+}
+
+static void arcmsr_hbaD_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	u32 outbound_write_pointer, doneq_index, index_stripped, toggle;
+	uint32_t addressLow;
+	int error;
+	struct MessageUnit_D  *pmu;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	struct CommandControlBlock *ccb;
+	unsigned long flags, ccb_cdb_phy;
+
+	spin_lock_irqsave(&acb->doneq_lock, flags);
+	pmu = acb->pmuD;
+	outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
+	doneq_index = pmu->doneq_index;
+	if ((doneq_index & 0xFFF) != (outbound_write_pointer & 0xFFF)) {
+		do {
+			toggle = doneq_index & 0x4000;
+			index_stripped = (doneq_index & 0xFFF) + 1;
+			index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
+			pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
+				((toggle ^ 0x4000) + 1);
+			doneq_index = pmu->doneq_index;
+			addressLow = pmu->done_qbuffer[doneq_index &
+				0xFFF].addressLow;
+			ccb_cdb_phy = (addressLow & 0xFFFFFFF0);
+			if (acb->cdb_phyadd_hipart)
+				ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+			arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset
+				+ ccb_cdb_phy);
+			ccb = container_of(arcmsr_cdb,
+				struct CommandControlBlock, arcmsr_cdb);
+			error = (addressLow & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
+				? true : false;
+			arcmsr_drain_donequeue(acb, ccb, error);
+			writel(doneq_index, pmu->outboundlist_read_pointer);
+		} while ((doneq_index & 0xFFF) !=
+			(outbound_write_pointer & 0xFFF));
+	}
+	writel(ARCMSR_ARC1214_OUTBOUND_LIST_INTERRUPT_CLEAR,
+		pmu->outboundlist_interrupt_cause);
+	readl(pmu->outboundlist_interrupt_cause);
+	spin_unlock_irqrestore(&acb->doneq_lock, flags);
+}
+
+static void arcmsr_hbaE_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t doneq_index;
+	uint16_t cmdSMID;
+	int error;
+	struct MessageUnit_E __iomem *pmu;
+	struct CommandControlBlock *ccb;
+	unsigned long flags;
+
+	spin_lock_irqsave(&acb->doneq_lock, flags);
+	doneq_index = acb->doneq_index;
+	pmu = acb->pmuE;
+	while ((readl(&pmu->reply_post_producer_index) & 0xFFFF) != doneq_index) {
+		cmdSMID = acb->pCompletionQ[doneq_index].cmdSMID;
+		ccb = acb->pccb_pool[cmdSMID];
+		error = (acb->pCompletionQ[doneq_index].cmdFlag
+			& ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+		arcmsr_drain_donequeue(acb, ccb, error);
+		doneq_index++;
+		if (doneq_index >= acb->completionQ_entry)
+			doneq_index = 0;
+	}
+	acb->doneq_index = doneq_index;
+	writel(doneq_index, &pmu->reply_post_consumer_index);
+	spin_unlock_irqrestore(&acb->doneq_lock, flags);
+}
+
+static void arcmsr_hbaF_postqueue_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t doneq_index;
+	uint16_t cmdSMID;
+	int error;
+	struct MessageUnit_F __iomem *phbcmu;
+	struct CommandControlBlock *ccb;
+	unsigned long flags;
+
+	spin_lock_irqsave(&acb->doneq_lock, flags);
+	doneq_index = acb->doneq_index;
+	phbcmu = acb->pmuF;
+	while (1) {
+		cmdSMID = acb->pCompletionQ[doneq_index].cmdSMID;
+		if (cmdSMID == 0xffff)
+			break;
+		ccb = acb->pccb_pool[cmdSMID];
+		error = (acb->pCompletionQ[doneq_index].cmdFlag &
+			ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+		arcmsr_drain_donequeue(acb, ccb, error);
+		acb->pCompletionQ[doneq_index].cmdSMID = 0xffff;
+		doneq_index++;
+		if (doneq_index >= acb->completionQ_entry)
+			doneq_index = 0;
+	}
+	acb->doneq_index = doneq_index;
+	writel(doneq_index, &phbcmu->reply_post_consumer_index);
+	spin_unlock_irqrestore(&acb->doneq_lock, flags);
+}
+
+/*
+**********************************************************************************
+** Handle a message interrupt
+**
+** The only message interrupt we expect is in response to a query for the current adapter config.  
+** We want this in order to compare the drivemap so that we can detect newly-attached drives.
+**********************************************************************************
+*/
+static void arcmsr_hbaA_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg  = acb->pmuA;
+	/*clear interrupt and message state*/
+	writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT, &reg->outbound_intstatus);
+	if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+		schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+static void arcmsr_hbaB_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg  = acb->pmuB;
+
+	/*clear interrupt and message state*/
+	writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
+	if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+		schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+/*
+**********************************************************************************
+** Handle a message interrupt
+**
+** The only message interrupt we expect is in response to a query for the
+** current adapter config.
+** We want this in order to compare the drivemap so that we can detect newly-attached drives.
+**********************************************************************************
+*/
+static void arcmsr_hbaC_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_C __iomem *reg  = acb->pmuC;
+	/*clear interrupt and message state*/
+	writel(ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR, &reg->outbound_doorbell_clear);
+	if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+		schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+
+static void arcmsr_hbaD_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_D *reg  = acb->pmuD;
+
+	writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE, reg->outbound_doorbell);
+	readl(reg->outbound_doorbell);
+	if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+		schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+
+static void arcmsr_hbaE_message_isr(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_E __iomem *reg  = acb->pmuE;
+
+	writel(0, &reg->host_int_status);
+	if (acb->acb_flags & ACB_F_MSG_GET_CONFIG)
+		schedule_work(&acb->arcmsr_do_message_isr_bh);
+}
+
+static int arcmsr_hbaA_handle_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t outbound_intstatus;
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	outbound_intstatus = readl(&reg->outbound_intstatus) &
+		acb->outbound_int_enable;
+	if (!(outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT))
+		return IRQ_NONE;
+	do {
+		writel(outbound_intstatus, &reg->outbound_intstatus);
+		if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT)
+			arcmsr_hbaA_doorbell_isr(acb);
+		if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT)
+			arcmsr_hbaA_postqueue_isr(acb);
+		if (outbound_intstatus & ARCMSR_MU_OUTBOUND_MESSAGE0_INT)
+			arcmsr_hbaA_message_isr(acb);
+		outbound_intstatus = readl(&reg->outbound_intstatus) &
+			acb->outbound_int_enable;
+	} while (outbound_intstatus & (ARCMSR_MU_OUTBOUND_DOORBELL_INT
+		| ARCMSR_MU_OUTBOUND_POSTQUEUE_INT
+		| ARCMSR_MU_OUTBOUND_MESSAGE0_INT));
+	return IRQ_HANDLED;
+}
+
+static int arcmsr_hbaB_handle_isr(struct AdapterControlBlock *acb)
+{
+	uint32_t outbound_doorbell;
+	struct MessageUnit_B *reg = acb->pmuB;
+	outbound_doorbell = readl(reg->iop2drv_doorbell) &
+				acb->outbound_int_enable;
+	if (!outbound_doorbell)
+		return IRQ_NONE;
+	do {
+		writel(~outbound_doorbell, reg->iop2drv_doorbell);
+		writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
+		if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK)
+			arcmsr_iop2drv_data_wrote_handle(acb);
+		if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_READ_OK)
+			arcmsr_iop2drv_data_read_handle(acb);
+		if (outbound_doorbell & ARCMSR_IOP2DRV_CDB_DONE)
+			arcmsr_hbaB_postqueue_isr(acb);
+		if (outbound_doorbell & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE)
+			arcmsr_hbaB_message_isr(acb);
+		outbound_doorbell = readl(reg->iop2drv_doorbell) &
+			acb->outbound_int_enable;
+	} while (outbound_doorbell & (ARCMSR_IOP2DRV_DATA_WRITE_OK
+		| ARCMSR_IOP2DRV_DATA_READ_OK
+		| ARCMSR_IOP2DRV_CDB_DONE
+		| ARCMSR_IOP2DRV_MESSAGE_CMD_DONE));
+	return IRQ_HANDLED;
+}
+
+static int arcmsr_hbaC_handle_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t host_interrupt_status;
+	struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
+	/*
+	*********************************************
+	**   check outbound intstatus
+	*********************************************
+	*/
+	host_interrupt_status = readl(&phbcmu->host_int_status) &
+		(ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR);
+	if (!host_interrupt_status)
+		return IRQ_NONE;
+	do {
+		if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR)
+			arcmsr_hbaC_doorbell_isr(pACB);
+		/* MU post queue interrupts*/
+		if (host_interrupt_status & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR)
+			arcmsr_hbaC_postqueue_isr(pACB);
+		host_interrupt_status = readl(&phbcmu->host_int_status);
+	} while (host_interrupt_status & (ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR));
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t arcmsr_hbaD_handle_isr(struct AdapterControlBlock *pACB)
+{
+	u32 host_interrupt_status;
+	struct MessageUnit_D  *pmu = pACB->pmuD;
+
+	host_interrupt_status = readl(pmu->host_int_status) &
+		(ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR);
+	if (!host_interrupt_status)
+		return IRQ_NONE;
+	do {
+		/* MU post queue interrupts*/
+		if (host_interrupt_status &
+			ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR)
+			arcmsr_hbaD_postqueue_isr(pACB);
+		if (host_interrupt_status &
+			ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR)
+			arcmsr_hbaD_doorbell_isr(pACB);
+		host_interrupt_status = readl(pmu->host_int_status);
+	} while (host_interrupt_status &
+		(ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR));
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t arcmsr_hbaE_handle_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t host_interrupt_status;
+	struct MessageUnit_E __iomem *pmu = pACB->pmuE;
+
+	host_interrupt_status = readl(&pmu->host_int_status) &
+		(ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR);
+	if (!host_interrupt_status)
+		return IRQ_NONE;
+	do {
+		/* MU ioctl transfer doorbell interrupts*/
+		if (host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR) {
+			arcmsr_hbaE_doorbell_isr(pACB);
+		}
+		/* MU post queue interrupts*/
+		if (host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR) {
+			arcmsr_hbaE_postqueue_isr(pACB);
+		}
+		host_interrupt_status = readl(&pmu->host_int_status);
+	} while (host_interrupt_status & (ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR));
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t arcmsr_hbaF_handle_isr(struct AdapterControlBlock *pACB)
+{
+	uint32_t host_interrupt_status;
+	struct MessageUnit_F __iomem *phbcmu = pACB->pmuF;
+
+	host_interrupt_status = readl(&phbcmu->host_int_status) &
+		(ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR);
+	if (!host_interrupt_status)
+		return IRQ_NONE;
+	do {
+		/* MU post queue interrupts*/
+		if (host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR)
+			arcmsr_hbaF_postqueue_isr(pACB);
+
+		/* MU ioctl transfer doorbell interrupts*/
+		if (host_interrupt_status & ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR)
+			arcmsr_hbaE_doorbell_isr(pACB);
+
+		host_interrupt_status = readl(&phbcmu->host_int_status);
+	} while (host_interrupt_status & (ARCMSR_HBEMU_OUTBOUND_POSTQUEUE_ISR |
+		ARCMSR_HBEMU_OUTBOUND_DOORBELL_ISR));
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		return arcmsr_hbaA_handle_isr(acb);
+	case ACB_ADAPTER_TYPE_B:
+		return arcmsr_hbaB_handle_isr(acb);
+	case ACB_ADAPTER_TYPE_C:
+		return arcmsr_hbaC_handle_isr(acb);
+	case ACB_ADAPTER_TYPE_D:
+		return arcmsr_hbaD_handle_isr(acb);
+	case ACB_ADAPTER_TYPE_E:
+		return arcmsr_hbaE_handle_isr(acb);
+	case ACB_ADAPTER_TYPE_F:
+		return arcmsr_hbaF_handle_isr(acb);
+	default:
+		return IRQ_NONE;
+	}
+}
+
+static void arcmsr_iop_parking(struct AdapterControlBlock *acb)
+{
+	if (acb) {
+		/* stop adapter background rebuild */
+		if (acb->acb_flags & ACB_F_MSG_START_BGRB) {
+			uint32_t intmask_org;
+			acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+			intmask_org = arcmsr_disable_outbound_ints(acb);
+			arcmsr_stop_adapter_bgrb(acb);
+			arcmsr_flush_adapter_cache(acb);
+			arcmsr_enable_outbound_ints(acb, intmask_org);
+		}
+	}
+}
+
+
+void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *acb)
+{
+	uint32_t	i;
+
+	if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+		for (i = 0; i < 15; i++) {
+			if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+				acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+				acb->rqbuf_getIndex = 0;
+				acb->rqbuf_putIndex = 0;
+				arcmsr_iop_message_read(acb);
+				mdelay(30);
+			} else if (acb->rqbuf_getIndex !=
+				   acb->rqbuf_putIndex) {
+				acb->rqbuf_getIndex = 0;
+				acb->rqbuf_putIndex = 0;
+				mdelay(30);
+			} else
+				break;
+		}
+	}
+}
+
+static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
+		struct scsi_cmnd *cmd)
+{
+	char *buffer;
+	unsigned short use_sg;
+	int retvalue = 0, transfer_len = 0;
+	unsigned long flags;
+	struct CMD_MESSAGE_FIELD *pcmdmessagefld;
+	uint32_t controlcode = (uint32_t)cmd->cmnd[5] << 24 |
+		(uint32_t)cmd->cmnd[6] << 16 |
+		(uint32_t)cmd->cmnd[7] << 8 |
+		(uint32_t)cmd->cmnd[8];
+	struct scatterlist *sg;
+
+	use_sg = scsi_sg_count(cmd);
+	sg = scsi_sglist(cmd);
+	buffer = kmap_atomic(sg_page(sg)) + sg->offset;
+	if (use_sg > 1) {
+		retvalue = ARCMSR_MESSAGE_FAIL;
+		goto message_out;
+	}
+	transfer_len += sg->length;
+	if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
+		retvalue = ARCMSR_MESSAGE_FAIL;
+		pr_info("%s: ARCMSR_MESSAGE_FAIL!\n", __func__);
+		goto message_out;
+	}
+	pcmdmessagefld = (struct CMD_MESSAGE_FIELD *)buffer;
+	switch (controlcode) {
+	case ARCMSR_MESSAGE_READ_RQBUFFER: {
+		unsigned char *ver_addr;
+		uint8_t *ptmpQbuffer;
+		uint32_t allxfer_len = 0;
+		ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
+		if (!ver_addr) {
+			retvalue = ARCMSR_MESSAGE_FAIL;
+			pr_info("%s: memory not enough!\n", __func__);
+			goto message_out;
+		}
+		ptmpQbuffer = ver_addr;
+		spin_lock_irqsave(&acb->rqbuffer_lock, flags);
+		if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
+			unsigned int tail = acb->rqbuf_getIndex;
+			unsigned int head = acb->rqbuf_putIndex;
+			unsigned int cnt_to_end = CIRC_CNT_TO_END(head, tail, ARCMSR_MAX_QBUFFER);
+
+			allxfer_len = CIRC_CNT(head, tail, ARCMSR_MAX_QBUFFER);
+			if (allxfer_len > ARCMSR_API_DATA_BUFLEN)
+				allxfer_len = ARCMSR_API_DATA_BUFLEN;
+
+			if (allxfer_len <= cnt_to_end)
+				memcpy(ptmpQbuffer, acb->rqbuffer + tail, allxfer_len);
+			else {
+				memcpy(ptmpQbuffer, acb->rqbuffer + tail, cnt_to_end);
+				memcpy(ptmpQbuffer + cnt_to_end, acb->rqbuffer, allxfer_len - cnt_to_end);
+			}
+			acb->rqbuf_getIndex = (acb->rqbuf_getIndex + allxfer_len) % ARCMSR_MAX_QBUFFER;
+		}
+		memcpy(pcmdmessagefld->messagedatabuffer, ver_addr,
+			allxfer_len);
+		if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
+			struct QBUFFER __iomem *prbuffer;
+			acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+			prbuffer = arcmsr_get_iop_rqbuffer(acb);
+			if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
+				acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
+		}
+		spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
+		kfree(ver_addr);
+		pcmdmessagefld->cmdmessage.Length = allxfer_len;
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		break;
+	}
+	case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
+		unsigned char *ver_addr;
+		uint32_t user_len;
+		int32_t cnt2end;
+		uint8_t *pQbuffer, *ptmpuserbuffer;
+
+		user_len = pcmdmessagefld->cmdmessage.Length;
+		if (user_len > ARCMSR_API_DATA_BUFLEN) {
+			retvalue = ARCMSR_MESSAGE_FAIL;
+			goto message_out;
+		}
+
+		ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
+		if (!ver_addr) {
+			retvalue = ARCMSR_MESSAGE_FAIL;
+			goto message_out;
+		}
+		ptmpuserbuffer = ver_addr;
+
+		memcpy(ptmpuserbuffer,
+			pcmdmessagefld->messagedatabuffer, user_len);
+		spin_lock_irqsave(&acb->wqbuffer_lock, flags);
+		if (acb->wqbuf_putIndex != acb->wqbuf_getIndex) {
+			struct SENSE_DATA *sensebuffer =
+				(struct SENSE_DATA *)cmd->sense_buffer;
+			arcmsr_write_ioctldata2iop(acb);
+			/* has error report sensedata */
+			sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
+			sensebuffer->SenseKey = ILLEGAL_REQUEST;
+			sensebuffer->AdditionalSenseLength = 0x0A;
+			sensebuffer->AdditionalSenseCode = 0x20;
+			sensebuffer->Valid = 1;
+			retvalue = ARCMSR_MESSAGE_FAIL;
+		} else {
+			pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
+			cnt2end = ARCMSR_MAX_QBUFFER - acb->wqbuf_putIndex;
+			if (user_len > cnt2end) {
+				memcpy(pQbuffer, ptmpuserbuffer, cnt2end);
+				ptmpuserbuffer += cnt2end;
+				user_len -= cnt2end;
+				acb->wqbuf_putIndex = 0;
+				pQbuffer = acb->wqbuffer;
+			}
+			memcpy(pQbuffer, ptmpuserbuffer, user_len);
+			acb->wqbuf_putIndex += user_len;
+			acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
+			if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
+				acb->acb_flags &=
+						~ACB_F_MESSAGE_WQBUFFER_CLEARED;
+				arcmsr_write_ioctldata2iop(acb);
+			}
+		}
+		spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
+		kfree(ver_addr);
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		break;
+	}
+	case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
+		uint8_t *pQbuffer = acb->rqbuffer;
+
+		arcmsr_clear_iop2drv_rqueue_buffer(acb);
+		spin_lock_irqsave(&acb->rqbuffer_lock, flags);
+		acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
+		acb->rqbuf_getIndex = 0;
+		acb->rqbuf_putIndex = 0;
+		memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
+		spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		break;
+	}
+	case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
+		uint8_t *pQbuffer = acb->wqbuffer;
+		spin_lock_irqsave(&acb->wqbuffer_lock, flags);
+		acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
+			ACB_F_MESSAGE_WQBUFFER_READED);
+		acb->wqbuf_getIndex = 0;
+		acb->wqbuf_putIndex = 0;
+		memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
+		spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		break;
+	}
+	case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
+		uint8_t *pQbuffer;
+		arcmsr_clear_iop2drv_rqueue_buffer(acb);
+		spin_lock_irqsave(&acb->rqbuffer_lock, flags);
+		acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
+		acb->rqbuf_getIndex = 0;
+		acb->rqbuf_putIndex = 0;
+		pQbuffer = acb->rqbuffer;
+		memset(pQbuffer, 0, sizeof(struct QBUFFER));
+		spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
+		spin_lock_irqsave(&acb->wqbuffer_lock, flags);
+		acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
+			ACB_F_MESSAGE_WQBUFFER_READED);
+		acb->wqbuf_getIndex = 0;
+		acb->wqbuf_putIndex = 0;
+		pQbuffer = acb->wqbuffer;
+		memset(pQbuffer, 0, sizeof(struct QBUFFER));
+		spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		break;
+	}
+	case ARCMSR_MESSAGE_RETURN_CODE_3F: {
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_3F;
+		break;
+	}
+	case ARCMSR_MESSAGE_SAY_HELLO: {
+		int8_t *hello_string = "Hello! I am ARCMSR";
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		memcpy(pcmdmessagefld->messagedatabuffer,
+			hello_string, (int16_t)strlen(hello_string));
+		break;
+	}
+	case ARCMSR_MESSAGE_SAY_GOODBYE: {
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		arcmsr_iop_parking(acb);
+		break;
+	}
+	case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
+		if (acb->fw_flag == FW_DEADLOCK)
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
+		else
+			pcmdmessagefld->cmdmessage.ReturnCode =
+				ARCMSR_MESSAGE_RETURNCODE_OK;
+		arcmsr_flush_adapter_cache(acb);
+		break;
+	}
+	default:
+		retvalue = ARCMSR_MESSAGE_FAIL;
+		pr_info("%s: unknown controlcode!\n", __func__);
+	}
+message_out:
+	if (use_sg) {
+		struct scatterlist *sg = scsi_sglist(cmd);
+		kunmap_atomic(buffer - sg->offset);
+	}
+	return retvalue;
+}
+
+static struct CommandControlBlock *arcmsr_get_freeccb(struct AdapterControlBlock *acb)
+{
+	struct list_head *head;
+	struct CommandControlBlock *ccb = NULL;
+	unsigned long flags;
+
+	spin_lock_irqsave(&acb->ccblist_lock, flags);
+	head = &acb->ccb_free_list;
+	if (!list_empty(head)) {
+		ccb = list_entry(head->next, struct CommandControlBlock, list);
+		list_del_init(&ccb->list);
+	}else{
+		spin_unlock_irqrestore(&acb->ccblist_lock, flags);
+		return NULL;
+	}
+	spin_unlock_irqrestore(&acb->ccblist_lock, flags);
+	return ccb;
+}
+
+static void arcmsr_handle_virtual_command(struct AdapterControlBlock *acb,
+		struct scsi_cmnd *cmd)
+{
+	switch (cmd->cmnd[0]) {
+	case INQUIRY: {
+		unsigned char inqdata[36];
+		char *buffer;
+		struct scatterlist *sg;
+
+		if (cmd->device->lun) {
+			cmd->result = (DID_TIME_OUT << 16);
+			scsi_done(cmd);
+			return;
+		}
+		inqdata[0] = TYPE_PROCESSOR;
+		/* Periph Qualifier & Periph Dev Type */
+		inqdata[1] = 0;
+		/* rem media bit & Dev Type Modifier */
+		inqdata[2] = 0;
+		/* ISO, ECMA, & ANSI versions */
+		inqdata[4] = 31;
+		/* length of additional data */
+		memcpy(&inqdata[8], "Areca   ", 8);
+		/* Vendor Identification */
+		memcpy(&inqdata[16], "RAID controller ", 16);
+		/* Product Identification */
+		memcpy(&inqdata[32], "R001", 4); /* Product Revision */
+
+		sg = scsi_sglist(cmd);
+		buffer = kmap_atomic(sg_page(sg)) + sg->offset;
+
+		memcpy(buffer, inqdata, sizeof(inqdata));
+		sg = scsi_sglist(cmd);
+		kunmap_atomic(buffer - sg->offset);
+
+		scsi_done(cmd);
+	}
+	break;
+	case WRITE_BUFFER:
+	case READ_BUFFER: {
+		if (arcmsr_iop_message_xfer(acb, cmd))
+			cmd->result = (DID_ERROR << 16);
+		scsi_done(cmd);
+	}
+	break;
+	default:
+		scsi_done(cmd);
+	}
+}
+
+static int arcmsr_queue_command_lck(struct scsi_cmnd *cmd)
+{
+	struct Scsi_Host *host = cmd->device->host;
+	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
+	struct CommandControlBlock *ccb;
+	int target = cmd->device->id;
+
+	if (acb->acb_flags & ACB_F_ADAPTER_REMOVED) {
+		cmd->result = (DID_NO_CONNECT << 16);
+		scsi_done(cmd);
+		return 0;
+	}
+	cmd->host_scribble = NULL;
+	cmd->result = 0;
+	if (target == 16) {
+		/* virtual device for iop message transfer */
+		arcmsr_handle_virtual_command(acb, cmd);
+		return 0;
+	}
+	ccb = arcmsr_get_freeccb(acb);
+	if (!ccb)
+		return SCSI_MLQUEUE_HOST_BUSY;
+	if (arcmsr_build_ccb( acb, ccb, cmd ) == FAILED) {
+		cmd->result = (DID_ERROR << 16) | SAM_STAT_RESERVATION_CONFLICT;
+		scsi_done(cmd);
+		return 0;
+	}
+	arcmsr_post_ccb(acb, ccb);
+	return 0;
+}
+
+static DEF_SCSI_QCMD(arcmsr_queue_command)
+
+static int arcmsr_slave_config(struct scsi_device *sdev)
+{
+	unsigned int	dev_timeout;
+
+	dev_timeout = sdev->request_queue->rq_timeout;
+	if ((cmd_timeout > 0) && ((cmd_timeout * HZ) > dev_timeout))
+		blk_queue_rq_timeout(sdev->request_queue, cmd_timeout * HZ);
+	return 0;
+}
+
+static void arcmsr_get_adapter_config(struct AdapterControlBlock *pACB, uint32_t *rwbuffer)
+{
+	int count;
+	uint32_t *acb_firm_model = (uint32_t *)pACB->firm_model;
+	uint32_t *acb_firm_version = (uint32_t *)pACB->firm_version;
+	uint32_t *acb_device_map = (uint32_t *)pACB->device_map;
+	uint32_t *firm_model = &rwbuffer[15];
+	uint32_t *firm_version = &rwbuffer[17];
+	uint32_t *device_map = &rwbuffer[21];
+
+	count = 2;
+	while (count) {
+		*acb_firm_model = readl(firm_model);
+		acb_firm_model++;
+		firm_model++;
+		count--;
+	}
+	count = 4;
+	while (count) {
+		*acb_firm_version = readl(firm_version);
+		acb_firm_version++;
+		firm_version++;
+		count--;
+	}
+	count = 4;
+	while (count) {
+		*acb_device_map = readl(device_map);
+		acb_device_map++;
+		device_map++;
+		count--;
+	}
+	pACB->signature = readl(&rwbuffer[0]);
+	pACB->firm_request_len = readl(&rwbuffer[1]);
+	pACB->firm_numbers_queue = readl(&rwbuffer[2]);
+	pACB->firm_sdram_size = readl(&rwbuffer[3]);
+	pACB->firm_hd_channels = readl(&rwbuffer[4]);
+	pACB->firm_cfg_version = readl(&rwbuffer[25]);
+	pr_notice("Areca RAID Controller%d: Model %s, F/W %s\n",
+		pACB->host->host_no,
+		pACB->firm_model,
+		pACB->firm_version);
+}
+
+static bool arcmsr_hbaA_get_config(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+
+	arcmsr_wait_firmware_ready(acb);
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+	if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
+			miscellaneous data' timeout \n", acb->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(acb, reg->message_rwbuffer);
+	return true;
+}
+static bool arcmsr_hbaB_get_config(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+
+	arcmsr_wait_firmware_ready(acb);
+	writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
+	if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+		printk(KERN_ERR "arcmsr%d: can't set driver mode.\n", acb->host->host_no);
+		return false;
+	}
+	writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
+	if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
+			miscellaneous data' timeout \n", acb->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(acb, reg->message_rwbuffer);
+	return true;
+}
+
+static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)
+{
+	uint32_t intmask_org;
+	struct MessageUnit_C __iomem *reg = pACB->pmuC;
+
+	/* disable all outbound interrupt */
+	intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
+	writel(intmask_org|ARCMSR_HBCMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+	/* wait firmware ready */
+	arcmsr_wait_firmware_ready(pACB);
+	/* post "get config" instruction */
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+	/* wait message ready */
+	if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
+			miscellaneous data' timeout \n", pACB->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(pACB, reg->msgcode_rwbuffer);
+	return true;
+}
+
+static bool arcmsr_hbaD_get_config(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_D *reg = acb->pmuD;
+
+	if (readl(acb->pmuD->outbound_doorbell) &
+		ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE) {
+		writel(ARCMSR_ARC1214_IOP2DRV_MESSAGE_CMD_DONE,
+			acb->pmuD->outbound_doorbell);/*clear interrupt*/
+	}
+	arcmsr_wait_firmware_ready(acb);
+	/* post "get config" instruction */
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, reg->inbound_msgaddr0);
+	/* wait message ready */
+	if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
+		pr_notice("arcmsr%d: wait get adapter firmware "
+			"miscellaneous data timeout\n", acb->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(acb, reg->msgcode_rwbuffer);
+	return true;
+}
+
+static bool arcmsr_hbaE_get_config(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_E __iomem *reg = pACB->pmuE;
+	uint32_t intmask_org;
+
+	/* disable all outbound interrupt */
+	intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
+	writel(intmask_org | ARCMSR_HBEMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+	/* wait firmware ready */
+	arcmsr_wait_firmware_ready(pACB);
+	mdelay(20);
+	/* post "get config" instruction */
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &reg->iobound_doorbell);
+	/* wait message ready */
+	if (!arcmsr_hbaE_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait get adapter firmware "
+			"miscellaneous data timeout\n", pACB->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(pACB, reg->msgcode_rwbuffer);
+	return true;
+}
+
+static bool arcmsr_hbaF_get_config(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_F __iomem *reg = pACB->pmuF;
+	uint32_t intmask_org;
+
+	/* disable all outbound interrupt */
+	intmask_org = readl(&reg->host_int_mask); /* disable outbound message0 int */
+	writel(intmask_org | ARCMSR_HBEMU_ALL_INTMASKENABLE, &reg->host_int_mask);
+	/* wait firmware ready */
+	arcmsr_wait_firmware_ready(pACB);
+	/* post "get config" instruction */
+	writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &reg->iobound_doorbell);
+	/* wait message ready */
+	if (!arcmsr_hbaE_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait get adapter firmware miscellaneous data timeout\n",
+			  pACB->host->host_no);
+		return false;
+	}
+	arcmsr_get_adapter_config(pACB, pACB->msgcode_rwbuffer);
+	return true;
+}
+
+static bool arcmsr_get_firmware_spec(struct AdapterControlBlock *acb)
+{
+	bool rtn = false;
+
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		rtn = arcmsr_hbaA_get_config(acb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		rtn = arcmsr_hbaB_get_config(acb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		rtn = arcmsr_hbaC_get_config(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		rtn = arcmsr_hbaD_get_config(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+		rtn = arcmsr_hbaE_get_config(acb);
+		break;
+	case ACB_ADAPTER_TYPE_F:
+		rtn = arcmsr_hbaF_get_config(acb);
+		break;
+	default:
+		break;
+	}
+	acb->maxOutstanding = acb->firm_numbers_queue - 1;
+	if (acb->host->can_queue >= acb->firm_numbers_queue)
+		acb->host->can_queue = acb->maxOutstanding;
+	else
+		acb->maxOutstanding = acb->host->can_queue;
+	acb->maxFreeCCB = acb->host->can_queue;
+	if (acb->maxFreeCCB < ARCMSR_MAX_FREECCB_NUM)
+		acb->maxFreeCCB += 64;
+	return rtn;
+}
+
+static int arcmsr_hbaA_polling_ccbdone(struct AdapterControlBlock *acb,
+	struct CommandControlBlock *poll_ccb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	struct CommandControlBlock *ccb;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	uint32_t flag_ccb, outbound_intstatus, poll_ccb_done = 0, poll_count = 0;
+	int rtn;
+	bool error;
+	unsigned long ccb_cdb_phy;
+
+polling_hba_ccb_retry:
+	poll_count++;
+	outbound_intstatus = readl(&reg->outbound_intstatus) & acb->outbound_int_enable;
+	writel(outbound_intstatus, &reg->outbound_intstatus);/*clear interrupt*/
+	while (1) {
+		if ((flag_ccb = readl(&reg->outbound_queueport)) == 0xFFFFFFFF) {
+			if (poll_ccb_done){
+				rtn = SUCCESS;
+				break;
+			}else {
+				msleep(25);
+				if (poll_count > 100){
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hba_ccb_retry;
+			}
+		}
+		ccb_cdb_phy = (flag_ccb << 5) & 0xffffffff;
+		if (acb->cdb_phyadd_hipart)
+			ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+		ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
+		poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
+		if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
+			if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
+				printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
+					" poll command abort successfully \n"
+					, acb->host->host_no
+					, ccb->pcmd->device->id
+					, (u32)ccb->pcmd->device->lun
+					, ccb);
+				ccb->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(ccb);
+				continue;
+			}
+			printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
+				" command done ccb = '0x%p'"
+				"ccboutstandingcount = %d \n"
+				, acb->host->host_no
+				, ccb
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		}
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_report_ccb_state(acb, ccb, error);
+	}
+	return rtn;
+}
+
+static int arcmsr_hbaB_polling_ccbdone(struct AdapterControlBlock *acb,
+					struct CommandControlBlock *poll_ccb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	struct CommandControlBlock *ccb;
+	uint32_t flag_ccb, poll_ccb_done = 0, poll_count = 0;
+	int index, rtn;
+	bool error;
+	unsigned long ccb_cdb_phy;
+
+polling_hbb_ccb_retry:
+	poll_count++;
+	/* clear doorbell interrupt */
+	writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
+	while(1){
+		index = reg->doneq_index;
+		flag_ccb = reg->done_qbuffer[index];
+		if (flag_ccb == 0) {
+			if (poll_ccb_done){
+				rtn = SUCCESS;
+				break;
+			}else {
+				msleep(25);
+				if (poll_count > 100){
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hbb_ccb_retry;
+			}
+		}
+		reg->done_qbuffer[index] = 0;
+		index++;
+		/*if last index number set it to 0 */
+		index %= ARCMSR_MAX_HBB_POSTQUEUE;
+		reg->doneq_index = index;
+		/* check if command done with no error*/
+		ccb_cdb_phy = (flag_ccb << 5) & 0xffffffff;
+		if (acb->cdb_phyadd_hipart)
+			ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+		ccb = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
+		poll_ccb_done |= (ccb == poll_ccb) ? 1 : 0;
+		if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
+			if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
+				printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
+					" poll command abort successfully \n"
+					,acb->host->host_no
+					,ccb->pcmd->device->id
+					,(u32)ccb->pcmd->device->lun
+					,ccb);
+				ccb->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(ccb);
+				continue;
+			}
+			printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
+				" command done ccb = '0x%p'"
+				"ccboutstandingcount = %d \n"
+				, acb->host->host_no
+				, ccb
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		} 
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE0) ? true : false;
+		arcmsr_report_ccb_state(acb, ccb, error);
+	}
+	return rtn;
+}
+
+static int arcmsr_hbaC_polling_ccbdone(struct AdapterControlBlock *acb,
+		struct CommandControlBlock *poll_ccb)
+{
+	struct MessageUnit_C __iomem *reg = acb->pmuC;
+	uint32_t flag_ccb;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	bool error;
+	struct CommandControlBlock *pCCB;
+	uint32_t poll_ccb_done = 0, poll_count = 0;
+	int rtn;
+	unsigned long ccb_cdb_phy;
+
+polling_hbc_ccb_retry:
+	poll_count++;
+	while (1) {
+		if ((readl(&reg->host_int_status) & ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR) == 0) {
+			if (poll_ccb_done) {
+				rtn = SUCCESS;
+				break;
+			} else {
+				msleep(25);
+				if (poll_count > 100) {
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hbc_ccb_retry;
+			}
+		}
+		flag_ccb = readl(&reg->outbound_queueport_low);
+		ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+		if (acb->cdb_phyadd_hipart)
+			ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset + ccb_cdb_phy);
+		pCCB = container_of(arcmsr_cdb, struct CommandControlBlock, arcmsr_cdb);
+		poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
+		/* check ifcommand done with no error*/
+		if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
+			if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+				printk(KERN_NOTICE "arcmsr%d: scsi id = %d lun = %d ccb = '0x%p'"
+					" poll command abort successfully \n"
+					, acb->host->host_no
+					, pCCB->pcmd->device->id
+					, (u32)pCCB->pcmd->device->lun
+					, pCCB);
+				pCCB->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(pCCB);
+				continue;
+			}
+			printk(KERN_NOTICE "arcmsr%d: polling get an illegal ccb"
+				" command done ccb = '0x%p'"
+				"ccboutstandingcount = %d \n"
+				, acb->host->host_no
+				, pCCB
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		}
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+		arcmsr_report_ccb_state(acb, pCCB, error);
+	}
+	return rtn;
+}
+
+static int arcmsr_hbaD_polling_ccbdone(struct AdapterControlBlock *acb,
+				struct CommandControlBlock *poll_ccb)
+{
+	bool error;
+	uint32_t poll_ccb_done = 0, poll_count = 0, flag_ccb;
+	int rtn, doneq_index, index_stripped, outbound_write_pointer, toggle;
+	unsigned long flags, ccb_cdb_phy;
+	struct ARCMSR_CDB *arcmsr_cdb;
+	struct CommandControlBlock *pCCB;
+	struct MessageUnit_D *pmu = acb->pmuD;
+
+polling_hbaD_ccb_retry:
+	poll_count++;
+	while (1) {
+		spin_lock_irqsave(&acb->doneq_lock, flags);
+		outbound_write_pointer = pmu->done_qbuffer[0].addressLow + 1;
+		doneq_index = pmu->doneq_index;
+		if ((outbound_write_pointer & 0xFFF) == (doneq_index & 0xFFF)) {
+			spin_unlock_irqrestore(&acb->doneq_lock, flags);
+			if (poll_ccb_done) {
+				rtn = SUCCESS;
+				break;
+			} else {
+				msleep(25);
+				if (poll_count > 40) {
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hbaD_ccb_retry;
+			}
+		}
+		toggle = doneq_index & 0x4000;
+		index_stripped = (doneq_index & 0xFFF) + 1;
+		index_stripped %= ARCMSR_MAX_ARC1214_DONEQUEUE;
+		pmu->doneq_index = index_stripped ? (index_stripped | toggle) :
+				((toggle ^ 0x4000) + 1);
+		doneq_index = pmu->doneq_index;
+		spin_unlock_irqrestore(&acb->doneq_lock, flags);
+		flag_ccb = pmu->done_qbuffer[doneq_index & 0xFFF].addressLow;
+		ccb_cdb_phy = (flag_ccb & 0xFFFFFFF0);
+		if (acb->cdb_phyadd_hipart)
+			ccb_cdb_phy = ccb_cdb_phy | acb->cdb_phyadd_hipart;
+		arcmsr_cdb = (struct ARCMSR_CDB *)(acb->vir2phy_offset +
+			ccb_cdb_phy);
+		pCCB = container_of(arcmsr_cdb, struct CommandControlBlock,
+			arcmsr_cdb);
+		poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
+		if ((pCCB->acb != acb) ||
+			(pCCB->startdone != ARCMSR_CCB_START)) {
+			if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+				pr_notice("arcmsr%d: scsi id = %d "
+					"lun = %d ccb = '0x%p' poll command "
+					"abort successfully\n"
+					, acb->host->host_no
+					, pCCB->pcmd->device->id
+					, (u32)pCCB->pcmd->device->lun
+					, pCCB);
+				pCCB->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(pCCB);
+				continue;
+			}
+			pr_notice("arcmsr%d: polling an illegal "
+				"ccb command done ccb = '0x%p' "
+				"ccboutstandingcount = %d\n"
+				, acb->host->host_no
+				, pCCB
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		}
+		error = (flag_ccb & ARCMSR_CCBREPLY_FLAG_ERROR_MODE1)
+			? true : false;
+		arcmsr_report_ccb_state(acb, pCCB, error);
+	}
+	return rtn;
+}
+
+static int arcmsr_hbaE_polling_ccbdone(struct AdapterControlBlock *acb,
+				struct CommandControlBlock *poll_ccb)
+{
+	bool error;
+	uint32_t poll_ccb_done = 0, poll_count = 0, doneq_index;
+	uint16_t cmdSMID;
+	unsigned long flags;
+	int rtn;
+	struct CommandControlBlock *pCCB;
+	struct MessageUnit_E __iomem *reg = acb->pmuE;
+
+	polling_hbaC_ccb_retry:
+	poll_count++;
+	while (1) {
+		spin_lock_irqsave(&acb->doneq_lock, flags);
+		doneq_index = acb->doneq_index;
+		if ((readl(&reg->reply_post_producer_index) & 0xFFFF) ==
+				doneq_index) {
+			spin_unlock_irqrestore(&acb->doneq_lock, flags);
+			if (poll_ccb_done) {
+				rtn = SUCCESS;
+				break;
+			} else {
+				msleep(25);
+				if (poll_count > 40) {
+					rtn = FAILED;
+					break;
+				}
+				goto polling_hbaC_ccb_retry;
+			}
+		}
+		cmdSMID = acb->pCompletionQ[doneq_index].cmdSMID;
+		doneq_index++;
+		if (doneq_index >= acb->completionQ_entry)
+			doneq_index = 0;
+		acb->doneq_index = doneq_index;
+		spin_unlock_irqrestore(&acb->doneq_lock, flags);
+		pCCB = acb->pccb_pool[cmdSMID];
+		poll_ccb_done |= (pCCB == poll_ccb) ? 1 : 0;
+		/* check if command done with no error*/
+		if ((pCCB->acb != acb) || (pCCB->startdone != ARCMSR_CCB_START)) {
+			if (pCCB->startdone == ARCMSR_CCB_ABORTED) {
+				pr_notice("arcmsr%d: scsi id = %d "
+					"lun = %d ccb = '0x%p' poll command "
+					"abort successfully\n"
+					, acb->host->host_no
+					, pCCB->pcmd->device->id
+					, (u32)pCCB->pcmd->device->lun
+					, pCCB);
+				pCCB->pcmd->result = DID_ABORT << 16;
+				arcmsr_ccb_complete(pCCB);
+				continue;
+			}
+			pr_notice("arcmsr%d: polling an illegal "
+				"ccb command done ccb = '0x%p' "
+				"ccboutstandingcount = %d\n"
+				, acb->host->host_no
+				, pCCB
+				, atomic_read(&acb->ccboutstandingcount));
+			continue;
+		}
+		error = (acb->pCompletionQ[doneq_index].cmdFlag &
+			ARCMSR_CCBREPLY_FLAG_ERROR_MODE1) ? true : false;
+		arcmsr_report_ccb_state(acb, pCCB, error);
+	}
+	writel(doneq_index, &reg->reply_post_consumer_index);
+	return rtn;
+}
+
+static int arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
+					struct CommandControlBlock *poll_ccb)
+{
+	int rtn = 0;
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A:
+		rtn = arcmsr_hbaA_polling_ccbdone(acb, poll_ccb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		rtn = arcmsr_hbaB_polling_ccbdone(acb, poll_ccb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		rtn = arcmsr_hbaC_polling_ccbdone(acb, poll_ccb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		rtn = arcmsr_hbaD_polling_ccbdone(acb, poll_ccb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		rtn = arcmsr_hbaE_polling_ccbdone(acb, poll_ccb);
+		break;
+	}
+	return rtn;
+}
+
+static void arcmsr_set_iop_datetime(struct timer_list *t)
+{
+	struct AdapterControlBlock *pacb = from_timer(pacb, t, refresh_timer);
+	unsigned int next_time;
+	struct tm tm;
+
+	union {
+		struct	{
+		uint16_t	signature;
+		uint8_t		year;
+		uint8_t		month;
+		uint8_t		date;
+		uint8_t		hour;
+		uint8_t		minute;
+		uint8_t		second;
+		} a;
+		struct	{
+		uint32_t	msg_time[2];
+		} b;
+	} datetime;
+
+	time64_to_tm(ktime_get_real_seconds(), -sys_tz.tz_minuteswest * 60, &tm);
+
+	datetime.a.signature = 0x55AA;
+	datetime.a.year = tm.tm_year - 100; /* base 2000 instead of 1900 */
+	datetime.a.month = tm.tm_mon;
+	datetime.a.date = tm.tm_mday;
+	datetime.a.hour = tm.tm_hour;
+	datetime.a.minute = tm.tm_min;
+	datetime.a.second = tm.tm_sec;
+
+	switch (pacb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A: {
+			struct MessageUnit_A __iomem *reg = pacb->pmuA;
+			writel(datetime.b.msg_time[0], &reg->message_rwbuffer[0]);
+			writel(datetime.b.msg_time[1], &reg->message_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SYNC_TIMER, &reg->inbound_msgaddr0);
+			break;
+		}
+		case ACB_ADAPTER_TYPE_B: {
+			uint32_t __iomem *rwbuffer;
+			struct MessageUnit_B *reg = pacb->pmuB;
+			rwbuffer = reg->message_rwbuffer;
+			writel(datetime.b.msg_time[0], rwbuffer++);
+			writel(datetime.b.msg_time[1], rwbuffer++);
+			writel(ARCMSR_MESSAGE_SYNC_TIMER, reg->drv2iop_doorbell);
+			break;
+		}
+		case ACB_ADAPTER_TYPE_C: {
+			struct MessageUnit_C __iomem *reg = pacb->pmuC;
+			writel(datetime.b.msg_time[0], &reg->msgcode_rwbuffer[0]);
+			writel(datetime.b.msg_time[1], &reg->msgcode_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SYNC_TIMER, &reg->inbound_msgaddr0);
+			writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+			break;
+		}
+		case ACB_ADAPTER_TYPE_D: {
+			uint32_t __iomem *rwbuffer;
+			struct MessageUnit_D *reg = pacb->pmuD;
+			rwbuffer = reg->msgcode_rwbuffer;
+			writel(datetime.b.msg_time[0], rwbuffer++);
+			writel(datetime.b.msg_time[1], rwbuffer++);
+			writel(ARCMSR_INBOUND_MESG0_SYNC_TIMER, reg->inbound_msgaddr0);
+			break;
+		}
+		case ACB_ADAPTER_TYPE_E: {
+			struct MessageUnit_E __iomem *reg = pacb->pmuE;
+			writel(datetime.b.msg_time[0], &reg->msgcode_rwbuffer[0]);
+			writel(datetime.b.msg_time[1], &reg->msgcode_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SYNC_TIMER, &reg->inbound_msgaddr0);
+			pacb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+			writel(pacb->out_doorbell, &reg->iobound_doorbell);
+			break;
+		}
+		case ACB_ADAPTER_TYPE_F: {
+			struct MessageUnit_F __iomem *reg = pacb->pmuF;
+
+			pacb->msgcode_rwbuffer[0] = datetime.b.msg_time[0];
+			pacb->msgcode_rwbuffer[1] = datetime.b.msg_time[1];
+			writel(ARCMSR_INBOUND_MESG0_SYNC_TIMER, &reg->inbound_msgaddr0);
+			pacb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+			writel(pacb->out_doorbell, &reg->iobound_doorbell);
+			break;
+		}
+	}
+	if (sys_tz.tz_minuteswest)
+		next_time = ARCMSR_HOURS;
+	else
+		next_time = ARCMSR_MINUTES;
+	mod_timer(&pacb->refresh_timer, jiffies + msecs_to_jiffies(next_time));
+}
+
+static int arcmsr_iop_confirm(struct AdapterControlBlock *acb)
+{
+	uint32_t cdb_phyaddr, cdb_phyaddr_hi32;
+	dma_addr_t dma_coherent_handle;
+
+	/*
+	********************************************************************
+	** here we need to tell iop 331 our freeccb.HighPart
+	** if freeccb.HighPart is not zero
+	********************************************************************
+	*/
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_B:
+	case ACB_ADAPTER_TYPE_D:
+		dma_coherent_handle = acb->dma_coherent_handle2;
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		dma_coherent_handle = acb->dma_coherent_handle +
+			offsetof(struct CommandControlBlock, arcmsr_cdb);
+		break;
+	default:
+		dma_coherent_handle = acb->dma_coherent_handle;
+		break;
+	}
+	cdb_phyaddr = lower_32_bits(dma_coherent_handle);
+	cdb_phyaddr_hi32 = upper_32_bits(dma_coherent_handle);
+	acb->cdb_phyaddr_hi32 = cdb_phyaddr_hi32;
+	acb->cdb_phyadd_hipart = ((uint64_t)cdb_phyaddr_hi32) << 32;
+	/*
+	***********************************************************************
+	**    if adapter type B, set window of "post command Q"
+	***********************************************************************
+	*/
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		if (cdb_phyaddr_hi32 != 0) {
+			struct MessageUnit_A __iomem *reg = acb->pmuA;
+			writel(ARCMSR_SIGNATURE_SET_CONFIG, \
+						&reg->message_rwbuffer[0]);
+			writel(cdb_phyaddr_hi32, &reg->message_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, \
+							&reg->inbound_msgaddr0);
+			if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
+				printk(KERN_NOTICE "arcmsr%d: ""set ccb high \
+				part physical address timeout\n",
+				acb->host->host_no);
+				return 1;
+			}
+		}
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		uint32_t __iomem *rwbuffer;
+
+		struct MessageUnit_B *reg = acb->pmuB;
+		reg->postq_index = 0;
+		reg->doneq_index = 0;
+		writel(ARCMSR_MESSAGE_SET_POST_WINDOW, reg->drv2iop_doorbell);
+		if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+			printk(KERN_NOTICE "arcmsr%d: cannot set driver mode\n", \
+				acb->host->host_no);
+			return 1;
+		}
+		rwbuffer = reg->message_rwbuffer;
+		/* driver "set config" signature */
+		writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
+		/* normal should be zero */
+		writel(cdb_phyaddr_hi32, rwbuffer++);
+		/* postQ size (256 + 8)*4	 */
+		writel(cdb_phyaddr, rwbuffer++);
+		/* doneQ size (256 + 8)*4	 */
+		writel(cdb_phyaddr + 1056, rwbuffer++);
+		/* ccb maxQ size must be --> [(256 + 8)*4]*/
+		writel(1056, rwbuffer);
+
+		writel(ARCMSR_MESSAGE_SET_CONFIG, reg->drv2iop_doorbell);
+		if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+			printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
+			timeout \n",acb->host->host_no);
+			return 1;
+		}
+		writel(ARCMSR_MESSAGE_START_DRIVER_MODE, reg->drv2iop_doorbell);
+		if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+			pr_err("arcmsr%d: can't set driver mode.\n",
+				acb->host->host_no);
+			return 1;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+			struct MessageUnit_C __iomem *reg = acb->pmuC;
+
+			printk(KERN_NOTICE "arcmsr%d: cdb_phyaddr_hi32=0x%x\n",
+					acb->adapter_index, cdb_phyaddr_hi32);
+			writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
+			writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[1]);
+			writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
+			writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+			if (!arcmsr_hbaC_wait_msgint_ready(acb)) {
+				printk(KERN_NOTICE "arcmsr%d: 'set command Q window' \
+				timeout \n", acb->host->host_no);
+				return 1;
+			}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		uint32_t __iomem *rwbuffer;
+		struct MessageUnit_D *reg = acb->pmuD;
+		reg->postq_index = 0;
+		reg->doneq_index = 0;
+		rwbuffer = reg->msgcode_rwbuffer;
+		writel(ARCMSR_SIGNATURE_SET_CONFIG, rwbuffer++);
+		writel(cdb_phyaddr_hi32, rwbuffer++);
+		writel(cdb_phyaddr, rwbuffer++);
+		writel(cdb_phyaddr + (ARCMSR_MAX_ARC1214_POSTQUEUE *
+			sizeof(struct InBound_SRB)), rwbuffer++);
+		writel(0x100, rwbuffer);
+		writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, reg->inbound_msgaddr0);
+		if (!arcmsr_hbaD_wait_msgint_ready(acb)) {
+			pr_notice("arcmsr%d: 'set command Q window' timeout\n",
+				acb->host->host_no);
+			return 1;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->msgcode_rwbuffer[0]);
+		writel(ARCMSR_SIGNATURE_1884, &reg->msgcode_rwbuffer[1]);
+		writel(cdb_phyaddr, &reg->msgcode_rwbuffer[2]);
+		writel(cdb_phyaddr_hi32, &reg->msgcode_rwbuffer[3]);
+		writel(acb->ccbsize, &reg->msgcode_rwbuffer[4]);
+		writel(lower_32_bits(acb->dma_coherent_handle2), &reg->msgcode_rwbuffer[5]);
+		writel(upper_32_bits(acb->dma_coherent_handle2), &reg->msgcode_rwbuffer[6]);
+		writel(acb->ioqueue_size, &reg->msgcode_rwbuffer[7]);
+		writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
+		acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+		writel(acb->out_doorbell, &reg->iobound_doorbell);
+		if (!arcmsr_hbaE_wait_msgint_ready(acb)) {
+			pr_notice("arcmsr%d: 'set command Q window' timeout \n",
+				acb->host->host_no);
+			return 1;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_F __iomem *reg = acb->pmuF;
+
+		acb->msgcode_rwbuffer[0] = ARCMSR_SIGNATURE_SET_CONFIG;
+		acb->msgcode_rwbuffer[1] = ARCMSR_SIGNATURE_1886;
+		acb->msgcode_rwbuffer[2] = cdb_phyaddr;
+		acb->msgcode_rwbuffer[3] = cdb_phyaddr_hi32;
+		acb->msgcode_rwbuffer[4] = acb->ccbsize;
+		acb->msgcode_rwbuffer[5] = lower_32_bits(acb->dma_coherent_handle2);
+		acb->msgcode_rwbuffer[6] = upper_32_bits(acb->dma_coherent_handle2);
+		acb->msgcode_rwbuffer[7] = acb->completeQ_size;
+		writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
+		acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+		writel(acb->out_doorbell, &reg->iobound_doorbell);
+		if (!arcmsr_hbaE_wait_msgint_ready(acb)) {
+			pr_notice("arcmsr%d: 'set command Q window' timeout\n",
+				acb->host->host_no);
+			return 1;
+		}
+		}
+		break;
+	}
+	return 0;
+}
+
+static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
+{
+	uint32_t firmware_state = 0;
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		do {
+			if (!(acb->acb_flags & ACB_F_IOP_INITED))
+				msleep(20);
+			firmware_state = readl(&reg->outbound_msgaddr1);
+		} while ((firmware_state & ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		do {
+			if (!(acb->acb_flags & ACB_F_IOP_INITED))
+				msleep(20);
+			firmware_state = readl(reg->iop2drv_doorbell);
+		} while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
+		writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		do {
+			if (!(acb->acb_flags & ACB_F_IOP_INITED))
+				msleep(20);
+			firmware_state = readl(&reg->outbound_msgaddr1);
+		} while ((firmware_state & ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK) == 0);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		do {
+			if (!(acb->acb_flags & ACB_F_IOP_INITED))
+				msleep(20);
+			firmware_state = readl(reg->outbound_msgaddr1);
+		} while ((firmware_state &
+			ARCMSR_ARC1214_MESSAGE_FIRMWARE_OK) == 0);
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		do {
+			if (!(acb->acb_flags & ACB_F_IOP_INITED))
+				msleep(20);
+			firmware_state = readl(&reg->outbound_msgaddr1);
+		} while ((firmware_state & ARCMSR_HBEMU_MESSAGE_FIRMWARE_OK) == 0);
+		}
+		break;
+	}
+}
+
+static void arcmsr_request_device_map(struct timer_list *t)
+{
+	struct AdapterControlBlock *acb = from_timer(acb, t, eternal_timer);
+	if (acb->acb_flags & (ACB_F_MSG_GET_CONFIG | ACB_F_BUS_RESET | ACB_F_ABORT)) {
+		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
+	} else {
+		acb->fw_flag = FW_NORMAL;
+		switch (acb->adapter_type) {
+		case ACB_ADAPTER_TYPE_A: {
+			struct MessageUnit_A __iomem *reg = acb->pmuA;
+			writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+			break;
+			}
+		case ACB_ADAPTER_TYPE_B: {
+			struct MessageUnit_B *reg = acb->pmuB;
+			writel(ARCMSR_MESSAGE_GET_CONFIG, reg->drv2iop_doorbell);
+			break;
+			}
+		case ACB_ADAPTER_TYPE_C: {
+			struct MessageUnit_C __iomem *reg = acb->pmuC;
+			writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+			writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &reg->inbound_doorbell);
+			break;
+			}
+		case ACB_ADAPTER_TYPE_D: {
+			struct MessageUnit_D *reg = acb->pmuD;
+			writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, reg->inbound_msgaddr0);
+			break;
+			}
+		case ACB_ADAPTER_TYPE_E: {
+			struct MessageUnit_E __iomem *reg = acb->pmuE;
+			writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+			acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+			writel(acb->out_doorbell, &reg->iobound_doorbell);
+			break;
+			}
+		case ACB_ADAPTER_TYPE_F: {
+			struct MessageUnit_F __iomem *reg = acb->pmuF;
+			uint32_t outMsg1 = readl(&reg->outbound_msgaddr1);
+
+			if (!(outMsg1 & ARCMSR_HBFMU_MESSAGE_FIRMWARE_OK) ||
+				(outMsg1 & ARCMSR_HBFMU_MESSAGE_NO_VOLUME_CHANGE))
+				goto nxt6s;
+			writel(ARCMSR_INBOUND_MESG0_GET_CONFIG, &reg->inbound_msgaddr0);
+			acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+			writel(acb->out_doorbell, &reg->iobound_doorbell);
+			break;
+			}
+		default:
+			return;
+		}
+		acb->acb_flags |= ACB_F_MSG_GET_CONFIG;
+nxt6s:
+		mod_timer(&acb->eternal_timer, jiffies + msecs_to_jiffies(6 * HZ));
+	}
+}
+
+static void arcmsr_hbaA_start_bgrb(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = acb->pmuA;
+	acb->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &reg->inbound_msgaddr0);
+	if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
+				rebuild' timeout \n", acb->host->host_no);
+	}
+}
+
+static void arcmsr_hbaB_start_bgrb(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = acb->pmuB;
+	acb->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_MESSAGE_START_BGRB, reg->drv2iop_doorbell);
+	if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
+				rebuild' timeout \n",acb->host->host_no);
+	}
+}
+
+static void arcmsr_hbaC_start_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_C __iomem *phbcmu = pACB->pmuC;
+	pACB->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &phbcmu->inbound_msgaddr0);
+	writel(ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE, &phbcmu->inbound_doorbell);
+	if (!arcmsr_hbaC_wait_msgint_ready(pACB)) {
+		printk(KERN_NOTICE "arcmsr%d: wait 'start adapter background \
+				rebuild' timeout \n", pACB->host->host_no);
+	}
+	return;
+}
+
+static void arcmsr_hbaD_start_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_D *pmu = pACB->pmuD;
+
+	pACB->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, pmu->inbound_msgaddr0);
+	if (!arcmsr_hbaD_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait 'start adapter "
+			"background rebuild' timeout\n", pACB->host->host_no);
+	}
+}
+
+static void arcmsr_hbaE_start_bgrb(struct AdapterControlBlock *pACB)
+{
+	struct MessageUnit_E __iomem *pmu = pACB->pmuE;
+
+	pACB->acb_flags |= ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_INBOUND_MESG0_START_BGRB, &pmu->inbound_msgaddr0);
+	pACB->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_MESSAGE_CMD_DONE;
+	writel(pACB->out_doorbell, &pmu->iobound_doorbell);
+	if (!arcmsr_hbaE_wait_msgint_ready(pACB)) {
+		pr_notice("arcmsr%d: wait 'start adapter "
+			"background rebuild' timeout \n", pACB->host->host_no);
+	}
+}
+
+static void arcmsr_start_adapter_bgrb(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		arcmsr_hbaA_start_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_B:
+		arcmsr_hbaB_start_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		arcmsr_hbaC_start_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_D:
+		arcmsr_hbaD_start_bgrb(acb);
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:
+		arcmsr_hbaE_start_bgrb(acb);
+		break;
+	}
+}
+
+static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		uint32_t outbound_doorbell;
+		/* empty doorbell Qbuffer if door bell ringed */
+		outbound_doorbell = readl(&reg->outbound_doorbell);
+		/*clear doorbell interrupt */
+		writel(outbound_doorbell, &reg->outbound_doorbell);
+		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = acb->pmuB;
+		uint32_t outbound_doorbell, i;
+		writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
+		writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
+		/* let IOP know data has been read */
+		for(i=0; i < 200; i++) {
+			msleep(20);
+			outbound_doorbell = readl(reg->iop2drv_doorbell);
+			if( outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {
+				writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);
+				writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);
+			} else
+				break;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C: {
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		uint32_t outbound_doorbell, i;
+		/* empty doorbell Qbuffer if door bell ringed */
+		outbound_doorbell = readl(&reg->outbound_doorbell);
+		writel(outbound_doorbell, &reg->outbound_doorbell_clear);
+		writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK, &reg->inbound_doorbell);
+		for (i = 0; i < 200; i++) {
+			msleep(20);
+			outbound_doorbell = readl(&reg->outbound_doorbell);
+			if (outbound_doorbell &
+				ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK) {
+				writel(outbound_doorbell,
+					&reg->outbound_doorbell_clear);
+				writel(ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK,
+					&reg->inbound_doorbell);
+			} else
+				break;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D: {
+		struct MessageUnit_D *reg = acb->pmuD;
+		uint32_t outbound_doorbell, i;
+		/* empty doorbell Qbuffer if door bell ringed */
+		outbound_doorbell = readl(reg->outbound_doorbell);
+		writel(outbound_doorbell, reg->outbound_doorbell);
+		writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
+			reg->inbound_doorbell);
+		for (i = 0; i < 200; i++) {
+			msleep(20);
+			outbound_doorbell = readl(reg->outbound_doorbell);
+			if (outbound_doorbell &
+				ARCMSR_ARC1214_IOP2DRV_DATA_WRITE_OK) {
+				writel(outbound_doorbell,
+					reg->outbound_doorbell);
+				writel(ARCMSR_ARC1214_DRV2IOP_DATA_OUT_READ,
+					reg->inbound_doorbell);
+			} else
+				break;
+		}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F: {
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		uint32_t i, tmp;
+
+		acb->in_doorbell = readl(&reg->iobound_doorbell);
+		writel(0, &reg->host_int_status); /*clear interrupt*/
+		acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_READ_OK;
+		writel(acb->out_doorbell, &reg->iobound_doorbell);
+		for(i=0; i < 200; i++) {
+			msleep(20);
+			tmp = acb->in_doorbell;
+			acb->in_doorbell = readl(&reg->iobound_doorbell);
+			if((tmp ^ acb->in_doorbell) & ARCMSR_HBEMU_IOP2DRV_DATA_WRITE_OK) {
+				writel(0, &reg->host_int_status); /*clear interrupt*/
+				acb->out_doorbell ^= ARCMSR_HBEMU_DRV2IOP_DATA_READ_OK;
+				writel(acb->out_doorbell, &reg->iobound_doorbell);
+			} else
+				break;
+		}
+		}
+		break;
+	}
+}
+
+static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:
+		return;
+	case ACB_ADAPTER_TYPE_B:
+		{
+			struct MessageUnit_B *reg = acb->pmuB;
+			writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell);
+			if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
+				printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
+				return;
+			}
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C:
+		return;
+	}
+	return;
+}
+
+static void arcmsr_hardware_reset(struct AdapterControlBlock *acb)
+{
+	uint8_t value[64];
+	int i, count = 0;
+	struct MessageUnit_A __iomem *pmuA = acb->pmuA;
+	struct MessageUnit_C __iomem *pmuC = acb->pmuC;
+	struct MessageUnit_D *pmuD = acb->pmuD;
+
+	/* backup pci config data */
+	printk(KERN_NOTICE "arcmsr%d: executing hw bus reset .....\n", acb->host->host_no);
+	for (i = 0; i < 64; i++) {
+		pci_read_config_byte(acb->pdev, i, &value[i]);
+	}
+	/* hardware reset signal */
+	if (acb->dev_id == 0x1680) {
+		writel(ARCMSR_ARC1680_BUS_RESET, &pmuA->reserved1[0]);
+	} else if (acb->dev_id == 0x1880) {
+		do {
+			count++;
+			writel(0xF, &pmuC->write_sequence);
+			writel(0x4, &pmuC->write_sequence);
+			writel(0xB, &pmuC->write_sequence);
+			writel(0x2, &pmuC->write_sequence);
+			writel(0x7, &pmuC->write_sequence);
+			writel(0xD, &pmuC->write_sequence);
+		} while (((readl(&pmuC->host_diagnostic) & ARCMSR_ARC1880_DiagWrite_ENABLE) == 0) && (count < 5));
+		writel(ARCMSR_ARC1880_RESET_ADAPTER, &pmuC->host_diagnostic);
+	} else if (acb->dev_id == 0x1884) {
+		struct MessageUnit_E __iomem *pmuE = acb->pmuE;
+		do {
+			count++;
+			writel(0x4, &pmuE->write_sequence_3xxx);
+			writel(0xB, &pmuE->write_sequence_3xxx);
+			writel(0x2, &pmuE->write_sequence_3xxx);
+			writel(0x7, &pmuE->write_sequence_3xxx);
+			writel(0xD, &pmuE->write_sequence_3xxx);
+			mdelay(10);
+		} while (((readl(&pmuE->host_diagnostic_3xxx) &
+			ARCMSR_ARC1884_DiagWrite_ENABLE) == 0) && (count < 5));
+		writel(ARCMSR_ARC188X_RESET_ADAPTER, &pmuE->host_diagnostic_3xxx);
+	} else if (acb->dev_id == 0x1214) {
+		writel(0x20, pmuD->reset_request);
+	} else {
+		pci_write_config_byte(acb->pdev, 0x84, 0x20);
+	}
+	msleep(2000);
+	/* write back pci config data */
+	for (i = 0; i < 64; i++) {
+		pci_write_config_byte(acb->pdev, i, value[i]);
+	}
+	msleep(1000);
+	return;
+}
+
+static bool arcmsr_reset_in_progress(struct AdapterControlBlock *acb)
+{
+	bool rtn = true;
+
+	switch(acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A:{
+		struct MessageUnit_A __iomem *reg = acb->pmuA;
+		rtn = ((readl(&reg->outbound_msgaddr1) &
+			ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK) == 0) ? true : false;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_B:{
+		struct MessageUnit_B *reg = acb->pmuB;
+		rtn = ((readl(reg->iop2drv_doorbell) &
+			ARCMSR_MESSAGE_FIRMWARE_OK) == 0) ? true : false;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_C:{
+		struct MessageUnit_C __iomem *reg = acb->pmuC;
+		rtn = (readl(&reg->host_diagnostic) & 0x04) ? true : false;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_D:{
+		struct MessageUnit_D *reg = acb->pmuD;
+		rtn = ((readl(reg->sample_at_reset) & 0x80) == 0) ?
+			true : false;
+		}
+		break;
+	case ACB_ADAPTER_TYPE_E:
+	case ACB_ADAPTER_TYPE_F:{
+		struct MessageUnit_E __iomem *reg = acb->pmuE;
+		rtn = (readl(&reg->host_diagnostic_3xxx) &
+			ARCMSR_ARC188X_RESET_ADAPTER) ? true : false;
+		}
+		break;
+	}
+	return rtn;
+}
+
+static void arcmsr_iop_init(struct AdapterControlBlock *acb)
+{
+	uint32_t intmask_org;
+	/* disable all outbound interrupt */
+	intmask_org = arcmsr_disable_outbound_ints(acb);
+	arcmsr_wait_firmware_ready(acb);
+	arcmsr_iop_confirm(acb);
+	/*start background rebuild*/
+	arcmsr_start_adapter_bgrb(acb);
+	/* empty doorbell Qbuffer if door bell ringed */
+	arcmsr_clear_doorbell_queue_buffer(acb);
+	arcmsr_enable_eoi_mode(acb);
+	/* enable outbound Post Queue,outbound doorbell Interrupt */
+	arcmsr_enable_outbound_ints(acb, intmask_org);
+	acb->acb_flags |= ACB_F_IOP_INITED;
+}
+
+static uint8_t arcmsr_iop_reset(struct AdapterControlBlock *acb)
+{
+	struct CommandControlBlock *ccb;
+	uint32_t intmask_org;
+	uint8_t rtnval = 0x00;
+	int i = 0;
+	unsigned long flags;
+
+	if (atomic_read(&acb->ccboutstandingcount) != 0) {
+		/* disable all outbound interrupt */
+		intmask_org = arcmsr_disable_outbound_ints(acb);
+		/* talk to iop 331 outstanding command aborted */
+		rtnval = arcmsr_abort_allcmd(acb);
+		/* clear all outbound posted Q */
+		arcmsr_done4abort_postqueue(acb);
+		for (i = 0; i < acb->maxFreeCCB; i++) {
+			ccb = acb->pccb_pool[i];
+			if (ccb->startdone == ARCMSR_CCB_START) {
+				scsi_dma_unmap(ccb->pcmd);
+				ccb->startdone = ARCMSR_CCB_DONE;
+				ccb->ccb_flags = 0;
+				spin_lock_irqsave(&acb->ccblist_lock, flags);
+				list_add_tail(&ccb->list, &acb->ccb_free_list);
+				spin_unlock_irqrestore(&acb->ccblist_lock, flags);
+			}
+		}
+		atomic_set(&acb->ccboutstandingcount, 0);
+		/* enable all outbound interrupt */
+		arcmsr_enable_outbound_ints(acb, intmask_org);
+		return rtnval;
+	}
+	return rtnval;
+}
+
+static int arcmsr_bus_reset(struct scsi_cmnd *cmd)
+{
+	struct AdapterControlBlock *acb;
+	int retry_count = 0;
+	int rtn = FAILED;
+	acb = (struct AdapterControlBlock *) cmd->device->host->hostdata;
+	if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+		return SUCCESS;
+	pr_notice("arcmsr: executing bus reset eh.....num_resets = %d,"
+		" num_aborts = %d \n", acb->num_resets, acb->num_aborts);
+	acb->num_resets++;
+
+	if (acb->acb_flags & ACB_F_BUS_RESET) {
+		long timeout;
+		pr_notice("arcmsr: there is a bus reset eh proceeding...\n");
+		timeout = wait_event_timeout(wait_q, (acb->acb_flags
+			& ACB_F_BUS_RESET) == 0, 220 * HZ);
+		if (timeout)
+			return SUCCESS;
+	}
+	acb->acb_flags |= ACB_F_BUS_RESET;
+	if (!arcmsr_iop_reset(acb)) {
+		arcmsr_hardware_reset(acb);
+		acb->acb_flags &= ~ACB_F_IOP_INITED;
+wait_reset_done:
+		ssleep(ARCMSR_SLEEPTIME);
+		if (arcmsr_reset_in_progress(acb)) {
+			if (retry_count > ARCMSR_RETRYCOUNT) {
+				acb->fw_flag = FW_DEADLOCK;
+				pr_notice("arcmsr%d: waiting for hw bus reset"
+					" return, RETRY TERMINATED!!\n",
+					acb->host->host_no);
+				return FAILED;
+			}
+			retry_count++;
+			goto wait_reset_done;
+		}
+		arcmsr_iop_init(acb);
+		acb->fw_flag = FW_NORMAL;
+		mod_timer(&acb->eternal_timer, jiffies +
+			msecs_to_jiffies(6 * HZ));
+		acb->acb_flags &= ~ACB_F_BUS_RESET;
+		rtn = SUCCESS;
+		pr_notice("arcmsr: scsi bus reset eh returns with success\n");
+	} else {
+		acb->acb_flags &= ~ACB_F_BUS_RESET;
+		acb->fw_flag = FW_NORMAL;
+		mod_timer(&acb->eternal_timer, jiffies +
+			msecs_to_jiffies(6 * HZ));
+		rtn = SUCCESS;
+	}
+	return rtn;
+}
+
+static int arcmsr_abort_one_cmd(struct AdapterControlBlock *acb,
+		struct CommandControlBlock *ccb)
+{
+	int rtn;
+	rtn = arcmsr_polling_ccbdone(acb, ccb);
+	return rtn;
+}
+
+static int arcmsr_abort(struct scsi_cmnd *cmd)
+{
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *)cmd->device->host->hostdata;
+	int i = 0;
+	int rtn = FAILED;
+	uint32_t intmask_org;
+
+	if (acb->acb_flags & ACB_F_ADAPTER_REMOVED)
+		return SUCCESS;
+	printk(KERN_NOTICE
+		"arcmsr%d: abort device command of scsi id = %d lun = %d\n",
+		acb->host->host_no, cmd->device->id, (u32)cmd->device->lun);
+	acb->acb_flags |= ACB_F_ABORT;
+	acb->num_aborts++;
+	/*
+	************************************************
+	** the all interrupt service routine is locked
+	** we need to handle it as soon as possible and exit
+	************************************************
+	*/
+	if (!atomic_read(&acb->ccboutstandingcount)) {
+		acb->acb_flags &= ~ACB_F_ABORT;
+		return rtn;
+	}
+
+	intmask_org = arcmsr_disable_outbound_ints(acb);
+	for (i = 0; i < acb->maxFreeCCB; i++) {
+		struct CommandControlBlock *ccb = acb->pccb_pool[i];
+		if (ccb->startdone == ARCMSR_CCB_START && ccb->pcmd == cmd) {
+			ccb->startdone = ARCMSR_CCB_ABORTED;
+			rtn = arcmsr_abort_one_cmd(acb, ccb);
+			break;
+		}
+	}
+	acb->acb_flags &= ~ACB_F_ABORT;
+	arcmsr_enable_outbound_ints(acb, intmask_org);
+	return rtn;
+}
+
+static const char *arcmsr_info(struct Scsi_Host *host)
+{
+	struct AdapterControlBlock *acb =
+		(struct AdapterControlBlock *) host->hostdata;
+	static char buf[256];
+	char *type;
+	int raid6 = 1;
+	switch (acb->pdev->device) {
+	case PCI_DEVICE_ID_ARECA_1110:
+	case PCI_DEVICE_ID_ARECA_1200:
+	case PCI_DEVICE_ID_ARECA_1202:
+	case PCI_DEVICE_ID_ARECA_1210:
+		raid6 = 0;
+		fallthrough;
+	case PCI_DEVICE_ID_ARECA_1120:
+	case PCI_DEVICE_ID_ARECA_1130:
+	case PCI_DEVICE_ID_ARECA_1160:
+	case PCI_DEVICE_ID_ARECA_1170:
+	case PCI_DEVICE_ID_ARECA_1201:
+	case PCI_DEVICE_ID_ARECA_1203:
+	case PCI_DEVICE_ID_ARECA_1220:
+	case PCI_DEVICE_ID_ARECA_1230:
+	case PCI_DEVICE_ID_ARECA_1260:
+	case PCI_DEVICE_ID_ARECA_1270:
+	case PCI_DEVICE_ID_ARECA_1280:
+		type = "SATA";
+		break;
+	case PCI_DEVICE_ID_ARECA_1214:
+	case PCI_DEVICE_ID_ARECA_1380:
+	case PCI_DEVICE_ID_ARECA_1381:
+	case PCI_DEVICE_ID_ARECA_1680:
+	case PCI_DEVICE_ID_ARECA_1681:
+	case PCI_DEVICE_ID_ARECA_1880:
+	case PCI_DEVICE_ID_ARECA_1884:
+		type = "SAS/SATA";
+		break;
+	case PCI_DEVICE_ID_ARECA_1886:
+		type = "NVMe/SAS/SATA";
+		break;
+	default:
+		type = "unknown";
+		raid6 =	0;
+		break;
+	}
+	sprintf(buf, "Areca %s RAID Controller %s\narcmsr version %s\n",
+		type, raid6 ? "(RAID6 capable)" : "", ARCMSR_DRIVER_VERSION);
+	return buf;
+}