[SCSI] arcmsr: 1.20.00.15: add SATA RAID plus other fixes

Description:
** support ARC1200/1201/1202 SATA RAID adapter, which is named
ACB_ADAPTER_TYPE_B
** modify the arcmsr_pci_slot_reset function
** modify the arcmsr_pci_ers_disconnect_forepart function
** modify the arcmsr_pci_ers_need_reset_forepart function 

Signed-off-by: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 1361 insertions, 888 deletions

diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 0ddfc21e9f7..d70398ac64d 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -9,7 +9,7 @@
 ** Copyright (C) 2002 - 2005, Areca Technology Corporation All rights reserved
 **
 **     Web site: www.areca.com.tw
-**       E-mail: erich@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
@@ -71,33 +71,37 @@
 #include <scsi/scsicam.h>
 #include "arcmsr.h"
 
-MODULE_AUTHOR("Erich Chen <erich@areca.com.tw>");
+MODULE_AUTHOR("Erich Chen <support@areca.com.tw>");
 MODULE_DESCRIPTION("ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID HOST Adapter");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(ARCMSR_DRIVER_VERSION);
 
-static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd);
+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_cmnd * cmd,
-				void (*done) (struct scsi_cmnd *));
+		struct block_device *bdev, sector_t capacity, int *info);
+static int arcmsr_queue_command(struct scsi_cmnd *cmd,
+					void (*done) (struct scsi_cmnd *));
 static int arcmsr_probe(struct pci_dev *pdev,
 				const struct pci_device_id *id);
 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_stop_adapter_bgrb(struct AdapterControlBlock *acb);
-static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb);
-static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb);
+static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
+static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
 static const char *arcmsr_info(struct Scsi_Host *);
 static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
 static pci_ers_result_t arcmsr_pci_error_detected(struct pci_dev *pdev,
 						pci_channel_state_t state);
 static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev);
-static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev, int queue_depth)
+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;
@@ -123,17 +127,21 @@ static struct scsi_host_template arcmsr_scsi_host_template = {
 	.use_clustering		= ENABLE_CLUSTERING,
 	.shost_attrs		= arcmsr_host_attrs,
 };
+#ifdef CONFIG_SCSI_ARCMSR_AER
 static struct pci_error_handlers arcmsr_pci_error_handlers = {
 	.error_detected		= arcmsr_pci_error_detected,
 	.slot_reset		= arcmsr_pci_slot_reset,
 };
-
+#endif
 static struct pci_device_id arcmsr_device_id_table[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1110)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1120)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1130)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1160)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1170)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1200)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1201)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1202)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1210)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1220)},
 	{PCI_DEVICE(PCI_VENDOR_ID_ARECA, PCI_DEVICE_ID_ARECA_1230)},
@@ -153,20 +161,20 @@ static struct pci_driver arcmsr_pci_driver = {
 	.probe			= arcmsr_probe,
 	.remove			= arcmsr_remove,
 	.shutdown		= arcmsr_shutdown,
+	#ifdef CONFIG_SCSI_ARCMSR_AER
 	.err_handler		= &arcmsr_pci_error_handlers,
+	#endif
 };
 
 static irqreturn_t arcmsr_do_interrupt(int irq, void *dev_id)
 {
 	irqreturn_t handle_state;
-	struct AdapterControlBlock *acb;
-	unsigned long flags;
-
-	acb = (struct AdapterControlBlock *)dev_id;
+	struct AdapterControlBlock *acb = dev_id;
 
-	spin_lock_irqsave(acb->host->host_lock, flags);
+	spin_lock(acb->host->host_lock);
 	handle_state = arcmsr_interrupt(acb);
-	spin_unlock_irqrestore(acb->host->host_lock, flags);
+	spin_unlock(acb->host->host_lock);
+
 	return handle_state;
 }
 
@@ -198,68 +206,159 @@ static int arcmsr_bios_param(struct scsi_device *sdev,
 	return 0;
 }
 
-static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
+static void arcmsr_define_adapter_type(struct AdapterControlBlock *acb)
 {
 	struct pci_dev *pdev = acb->pdev;
-	struct MessageUnit __iomem *reg = acb->pmu;
-	u32 ccb_phyaddr_hi32;
-	void *dma_coherent;
-	dma_addr_t dma_coherent_handle, dma_addr;
-	struct CommandControlBlock *ccb_tmp;
-	int i, j;
+	u16 dev_id;
+	pci_read_config_word(pdev, PCI_DEVICE_ID, &dev_id);
+	switch (dev_id) {
+	case 0x1201 : {
+		acb->adapter_type = ACB_ADAPTER_TYPE_B;
+		}
+		break;
+
+	default : acb->adapter_type = ACB_ADAPTER_TYPE_A;
+	}
+}
 
-	dma_coherent = dma_alloc_coherent(&pdev->dev,
+static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
+{
+
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct pci_dev *pdev = acb->pdev;
+		void *dma_coherent;
+		dma_addr_t dma_coherent_handle, dma_addr;
+		struct CommandControlBlock *ccb_tmp;
+		uint32_t intmask_org;
+		int i, j;
+
+		acb->pmu = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+		if (!acb->pmu) {
+			printk(KERN_NOTICE "arcmsr%d: memory mapping region fail \n",
+							acb->host->host_no);
+		}
+
+		dma_coherent = dma_alloc_coherent(&pdev->dev,
 			ARCMSR_MAX_FREECCB_NUM *
 			sizeof (struct CommandControlBlock) + 0x20,
 			&dma_coherent_handle, GFP_KERNEL);
-	if (!dma_coherent)
-		return -ENOMEM;
+		if (!dma_coherent)
+			return -ENOMEM;
 
-	acb->dma_coherent = dma_coherent;
-	acb->dma_coherent_handle = dma_coherent_handle;
+		acb->dma_coherent = dma_coherent;
+		acb->dma_coherent_handle = dma_coherent_handle;
 
-	if (((unsigned long)dma_coherent & 0x1F)) {
-		dma_coherent = dma_coherent +
-			(0x20 - ((unsigned long)dma_coherent & 0x1F));
-		dma_coherent_handle = dma_coherent_handle +
-			(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
-	}
+		if (((unsigned long)dma_coherent & 0x1F)) {
+			dma_coherent = dma_coherent +
+				(0x20 - ((unsigned long)dma_coherent & 0x1F));
+			dma_coherent_handle = dma_coherent_handle +
+				(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
+		}
 
-	dma_addr = dma_coherent_handle;
-	ccb_tmp = (struct CommandControlBlock *)dma_coherent;
-	for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
-		ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
-		ccb_tmp->acb = acb;
-		acb->pccb_pool[i] = ccb_tmp;
-		list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
-		dma_addr = dma_addr + sizeof (struct CommandControlBlock);
-		ccb_tmp++;
-	}
+		dma_addr = dma_coherent_handle;
+		ccb_tmp = (struct CommandControlBlock *)dma_coherent;
+		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+			ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
+			ccb_tmp->acb = acb;
+			acb->pccb_pool[i] = ccb_tmp;
+			list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
+			dma_addr = dma_addr + sizeof(struct CommandControlBlock);
+			ccb_tmp++;
+		}
 
-	acb->vir2phy_offset = (unsigned long)ccb_tmp -
-			      (unsigned long)dma_addr;
-	for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
-		for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
-			acb->devstate[i][j] = ARECA_RAID_GOOD;
+		acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
+		for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
+			for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
+				acb->devstate[i][j] = ARECA_RAID_GONE;
 
-	/*
-	** here we need to tell iop 331 our ccb_tmp.HighPart
-	** if ccb_tmp.HighPart is not zero
-	*/
-	ccb_phyaddr_hi32 = (uint32_t) ((dma_coherent_handle >> 16) >> 16);
-	if (ccb_phyaddr_hi32 != 0) {
-		writel(ARCMSR_SIGNATURE_SET_CONFIG, &reg->message_rwbuffer[0]);
-		writel(ccb_phyaddr_hi32, &reg->message_rwbuffer[1]);
-		writel(ARCMSR_INBOUND_MESG0_SET_CONFIG, &reg->inbound_msgaddr0);
-		if (arcmsr_wait_msgint_ready(acb))
-			printk(KERN_NOTICE "arcmsr%d: "
-			       "'set ccb high part physical address' timeout\n",
-				acb->host->host_no);
-	}
+		/*
+		** here we need to tell iop 331 our ccb_tmp.HighPart
+		** if ccb_tmp.HighPart is not zero
+		*/
+		intmask_org = arcmsr_disable_outbound_ints(acb);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+
+		struct pci_dev *pdev = acb->pdev;
+		struct MessageUnit_B *reg;
+		void *mem_base0, *mem_base1;
+		void *dma_coherent;
+		dma_addr_t dma_coherent_handle, dma_addr;
+		uint32_t intmask_org;
+		struct CommandControlBlock *ccb_tmp;
+		int i, j;
+
+		dma_coherent = dma_alloc_coherent(&pdev->dev,
+			((ARCMSR_MAX_FREECCB_NUM *
+			sizeof(struct CommandControlBlock) + 0x20) +
+			sizeof(struct MessageUnit_B)),
+			&dma_coherent_handle, GFP_KERNEL);
+		if (!dma_coherent)
+			return -ENOMEM;
 
-	writel(readl(&reg->outbound_intmask) |
-			ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
-	       &reg->outbound_intmask);
+		acb->dma_coherent = dma_coherent;
+		acb->dma_coherent_handle = dma_coherent_handle;
+
+		if (((unsigned long)dma_coherent & 0x1F)) {
+			dma_coherent = dma_coherent +
+				(0x20 - ((unsigned long)dma_coherent & 0x1F));
+			dma_coherent_handle = dma_coherent_handle +
+				(0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
+		}
+
+		reg = (struct MessageUnit_B *)(dma_coherent +
+		ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
+
+		dma_addr = dma_coherent_handle;
+		ccb_tmp = (struct CommandControlBlock *)dma_coherent;
+		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
+			ccb_tmp->cdb_shifted_phyaddr = dma_addr >> 5;
+			ccb_tmp->acb = acb;
+			acb->pccb_pool[i] = ccb_tmp;
+			list_add_tail(&ccb_tmp->list, &acb->ccb_free_list);
+			dma_addr = dma_addr + sizeof(struct CommandControlBlock);
+			ccb_tmp++;
+		}
+
+		reg = (struct MessageUnit_B *)(dma_coherent +
+		ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
+		acb->pmu = (struct MessageUnit_B *)reg;
+		mem_base0 = ioremap(pci_resource_start(pdev, 0),
+					pci_resource_len(pdev, 0));
+		mem_base1 = ioremap(pci_resource_start(pdev, 2),
+					pci_resource_len(pdev, 2));
+		reg->drv2iop_doorbell_reg = (uint32_t *)((char *)mem_base0 +
+						ARCMSR_DRV2IOP_DOORBELL);
+		reg->drv2iop_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 +
+						ARCMSR_DRV2IOP_DOORBELL_MASK);
+		reg->iop2drv_doorbell_reg = (uint32_t *)((char *)mem_base0 +
+							ARCMSR_IOP2DRV_DOORBELL);
+		reg->iop2drv_doorbell_mask_reg = (uint32_t *)((char *)mem_base0 +
+						ARCMSR_IOP2DRV_DOORBELL_MASK);
+		reg->ioctl_wbuffer_reg = (uint32_t *)((char *)mem_base1 +
+							ARCMSR_IOCTL_WBUFFER);
+		reg->ioctl_rbuffer_reg = (uint32_t *)((char *)mem_base1 +
+							ARCMSR_IOCTL_RBUFFER);
+		reg->msgcode_rwbuffer_reg = (uint32_t *)((char *)mem_base1 +
+							ARCMSR_MSGCODE_RWBUFFER);
+
+		acb->vir2phy_offset = (unsigned long)ccb_tmp -(unsigned long)dma_addr;
+		for (i = 0; i < ARCMSR_MAX_TARGETID; i++)
+			for (j = 0; j < ARCMSR_MAX_TARGETLUN; j++)
+				acb->devstate[i][j] = ARECA_RAID_GOOD;
+
+		/*
+		** here we need to tell iop 331 our ccb_tmp.HighPart
+		** if ccb_tmp.HighPart is not zero
+		*/
+		intmask_org = arcmsr_disable_outbound_ints(acb);
+		}
+		break;
+	}
 	return 0;
 }
 
@@ -310,16 +409,11 @@ static int arcmsr_probe(struct pci_dev *pdev,
 	host->unique_id = (bus << 8) | dev_fun;
 	host->irq = pdev->irq;
 	error = pci_request_regions(pdev, "arcmsr");
-	if (error)
+	if (error) {
 		goto out_host_put;
-
-	acb->pmu = ioremap(pci_resource_start(pdev, 0),
-			   pci_resource_len(pdev, 0));
-	if (!acb->pmu) {
-		printk(KERN_NOTICE "arcmsr%d: memory"
-			" mapping region fail \n", acb->host->host_no);
-		goto out_release_regions;
 	}
+	arcmsr_define_adapter_type(acb);
+
 	acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
 			   ACB_F_MESSAGE_RQBUFFER_CLEARED |
 			   ACB_F_MESSAGE_WQBUFFER_READED);
@@ -328,10 +422,10 @@ static int arcmsr_probe(struct pci_dev *pdev,
 
 	error = arcmsr_alloc_ccb_pool(acb);
 	if (error)
-		goto out_iounmap;
+		goto out_release_regions;
 
 	error = request_irq(pdev->irq, arcmsr_do_interrupt,
-			IRQF_DISABLED | IRQF_SHARED, "arcmsr", acb);
+				IRQF_SHARED, "arcmsr", acb);
 	if (error)
 		goto out_free_ccb_pool;
 
@@ -349,14 +443,15 @@ static int arcmsr_probe(struct pci_dev *pdev,
 		goto out_free_sysfs;
 
 	scsi_scan_host(host);
+	#ifdef CONFIG_SCSI_ARCMSR_AER
 	pci_enable_pcie_error_reporting(pdev);
+	#endif
 	return 0;
  out_free_sysfs:
  out_free_irq:
 	free_irq(pdev->irq, acb);
  out_free_ccb_pool:
 	arcmsr_free_ccb_pool(acb);
- out_iounmap:
 	iounmap(acb->pmu);
  out_release_regions:
 	pci_release_regions(pdev);
@@ -368,17 +463,84 @@ static int arcmsr_probe(struct pci_dev *pdev,
 	return error;
 }
 
-static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
+static uint8_t arcmsr_hba_wait_msgint_ready(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
+	uint32_t Index;
+	uint8_t Retries = 0x00;
+
+	do {
+		for (Index = 0; Index < 100; Index++) {
+			if (readl(&reg->outbound_intstatus) &
+					ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
+				writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT,
+					&reg->outbound_intstatus);
+				return 0x00;
+			}
+			msleep(10);
+		}/*max 1 seconds*/
+
+	} while (Retries++ < 20);/*max 20 sec*/
+	return 0xff;
+}
+
+static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+	uint32_t Index;
+	uint8_t Retries = 0x00;
+
+	do {
+		for (Index = 0; Index < 100; Index++) {
+			if (readl(reg->iop2drv_doorbell_reg)
+				& ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
+				writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
+					, reg->iop2drv_doorbell_reg);
+				return 0x00;
+			}
+			msleep(10);
+		}/*max 1 seconds*/
+
+	} while (Retries++ < 20);/*max 20 sec*/
+	return 0xff;
+}
+
+static void arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
 {
-	struct MessageUnit __iomem *reg = acb->pmu;
+	struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
 
 	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
-	if (arcmsr_wait_msgint_ready(acb))
+	if (arcmsr_hba_wait_msgint_ready(acb))
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
 			, acb->host->host_no);
 }
 
+static void arcmsr_abort_hbb_allcmd(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+
+	writel(ARCMSR_MESSAGE_ABORT_CMD, reg->drv2iop_doorbell_reg);
+	if (arcmsr_hbb_wait_msgint_ready(acb))
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'abort all outstanding command' timeout \n"
+			, acb->host->host_no);
+}
+
+static void arcmsr_abort_allcmd(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		arcmsr_abort_hba_allcmd(acb);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		arcmsr_abort_hbb_allcmd(acb);
+		}
+	}
+}
+
 static void arcmsr_pci_unmap_dma(struct CommandControlBlock *ccb)
 {
 	struct scsi_cmnd *pcmd = ccb->pcmd;
@@ -400,28 +562,239 @@ static void arcmsr_ccb_complete(struct CommandControlBlock *ccb, int stand_flag)
 	pcmd->scsi_done(pcmd);
 }
 
+static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
+	int retry_count = 30;
+
+	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
+	do {
+		if (!arcmsr_hba_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_flush_hbb_cache(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+	int retry_count = 30;
+
+	writel(ARCMSR_MESSAGE_FLUSH_CACHE, reg->drv2iop_doorbell_reg);
+	do {
+		if (!arcmsr_hbb_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_flush_adapter_cache(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		arcmsr_flush_hba_cache(acb);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		arcmsr_flush_hbb_cache(acb);
+		}
+	}
+}
+
+static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
+{
+
+	struct scsi_cmnd *pcmd = ccb->pcmd;
+	struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
+
+	pcmd->result = DID_OK << 16;
+	if (sensebuffer) {
+		int sense_data_length =
+			sizeof(struct SENSE_DATA) < sizeof(pcmd->sense_buffer)
+			? sizeof(struct SENSE_DATA) : sizeof(pcmd->sense_buffer);
+		memset(sensebuffer, 0, sizeof(pcmd->sense_buffer));
+		memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
+		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 = (struct MessageUnit_A *)acb->pmu;
+		orig_mask = readl(&reg->outbound_intmask)|\
+				ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE;
+		writel(orig_mask|ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE, \
+						&reg->outbound_intmask);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B : {
+		struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+		orig_mask = readl(reg->iop2drv_doorbell_mask_reg) & \
+					(~ARCMSR_IOP2DRV_MESSAGE_CMD_DONE);
+		writel(0, reg->iop2drv_doorbell_mask_reg);
+		}
+		break;
+	}
+	return orig_mask;
+}
+
+static void arcmsr_report_ccb_state(struct AdapterControlBlock *acb, \
+			struct CommandControlBlock *ccb, uint32_t flag_ccb)
+{
+
+	uint8_t id, lun;
+	id = ccb->pcmd->device->id;
+	lun = ccb->pcmd->device->lun;
+	if (!(flag_ccb & ARCMSR_CCBREPLY_FLAG_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, 1);
+	} 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, 1);
+			}
+			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, 1);
+			}
+			break;
+
+		case ARCMSR_DEV_CHECK_CONDITION: {
+			acb->devstate[id][lun] = ARECA_RAID_GOOD;
+			arcmsr_report_sense_info(ccb);
+			arcmsr_ccb_complete(ccb, 1);
+			}
+			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, 1);
+			break;
+		}
+	}
+}
+
+static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t flag_ccb)
+
+{
+	struct CommandControlBlock *ccb;
+
+	ccb = (struct CommandControlBlock *)(acb->vir2phy_offset + (flag_ccb << 5));
+	if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
+		if (ccb->startdone == ARCMSR_CCB_ABORTED) {
+			struct scsi_cmnd *abortcmd = ccb->pcmd;
+			if (abortcmd) {
+				abortcmd->result |= DID_ABORT << 16;
+				arcmsr_ccb_complete(ccb, 1);
+				printk(KERN_NOTICE "arcmsr%d: ccb ='0x%p' \
+				isr got aborted command \n", acb->host->host_no, ccb);
+			}
+		}
+		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
+				, ccb
+				, ccb->acb
+				, ccb->startdone
+				, atomic_read(&acb->ccboutstandingcount));
+		}
+	arcmsr_report_ccb_state(acb, ccb, flag_ccb);
+}
+
+static void arcmsr_done4abort_postqueue(struct AdapterControlBlock *acb)
+{
+	int i = 0;
+	uint32_t flag_ccb;
+
+	switch (acb->adapter_type) {
+
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = \
+			(struct MessageUnit_A *)acb->pmu;
+		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++ < ARCMSR_MAX_OUTSTANDING_CMD)) {
+			arcmsr_drain_donequeue(acb, flag_ccb);
+		}
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+		/*clear all outbound posted Q*/
+		for (i = 0; i < ARCMSR_MAX_HBB_POSTQUEUE; i++) {
+			if ((flag_ccb = readl(&reg->done_qbuffer[i])) != 0) {
+				writel(0, &reg->done_qbuffer[i]);
+				arcmsr_drain_donequeue(acb, flag_ccb);
+			}
+			writel(0, &reg->post_qbuffer[i]);
+		}
+		reg->doneq_index = 0;
+		reg->postq_index = 0;
+		}
+		break;
+	}
+}
 static void arcmsr_remove(struct pci_dev *pdev)
 {
 	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	struct AdapterControlBlock *acb =
 		(struct AdapterControlBlock *) host->hostdata;
-	struct MessageUnit __iomem *reg = acb->pmu;
 	int poll_count = 0;
 
 	arcmsr_free_sysfs_attr(acb);
 	scsi_remove_host(host);
 	arcmsr_stop_adapter_bgrb(acb);
 	arcmsr_flush_adapter_cache(acb);
-	writel(readl(&reg->outbound_intmask) |
-		ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
-		&reg->outbound_intmask);
+	arcmsr_disable_outbound_ints(acb);
 	acb->acb_flags |= ACB_F_SCSISTOPADAPTER;
 	acb->acb_flags &= ~ACB_F_IOP_INITED;
 
-	for (poll_count = 0; poll_count < 256; poll_count++) {
+	for (poll_count = 0; poll_count < ARCMSR_MAX_OUTSTANDING_CMD; poll_count++) {
 		if (!atomic_read(&acb->ccboutstandingcount))
 			break;
-		arcmsr_interrupt(acb);
+		arcmsr_interrupt(acb);/* FIXME: need spinlock */
 		msleep(25);
 	}
 
@@ -429,8 +802,7 @@ static void arcmsr_remove(struct pci_dev *pdev)
 		int i;
 
 		arcmsr_abort_allcmd(acb);
-		for (i = 0; i < ARCMSR_MAX_OUTSTANDING_CMD; i++)
-			readl(&reg->outbound_queueport);
+		arcmsr_done4abort_postqueue(acb);
 		for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
 			struct CommandControlBlock *ccb = acb->pccb_pool[i];
 			if (ccb->startdone == ARCMSR_CCB_START) {
@@ -477,75 +849,32 @@ static void arcmsr_module_exit(void)
 module_init(arcmsr_module_init);
 module_exit(arcmsr_module_exit);
 
-static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb)
-{
-	struct MessageUnit __iomem *reg = acb->pmu;
-	u32 orig_mask = readl(&reg->outbound_intmask);
-
-	writel(orig_mask | ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE,
-			&reg->outbound_intmask);
-	return orig_mask;
-}
-
-static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
-		u32 orig_mask)
+static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
+						u32 intmask_org)
 {
-	struct MessageUnit __iomem *reg = acb->pmu;
 	u32 mask;
 
-	mask = orig_mask & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
-			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
-	writel(mask, &reg->outbound_intmask);
-}
-
-static void arcmsr_flush_adapter_cache(struct AdapterControlBlock *acb)
-{
-	struct MessageUnit __iomem *reg = acb->pmu;
-
-	writel(ARCMSR_INBOUND_MESG0_FLUSH_CACHE, &reg->inbound_msgaddr0);
-	if (arcmsr_wait_msgint_ready(acb))
-		printk(KERN_NOTICE
-			"arcmsr%d: wait 'flush adapter cache' timeout \n"
-			, acb->host->host_no);
-}
+	switch (acb->adapter_type) {
 
-static void arcmsr_report_sense_info(struct CommandControlBlock *ccb)
-{
-	struct scsi_cmnd *pcmd = ccb->pcmd;
-	struct SENSE_DATA *sensebuffer = (struct SENSE_DATA *)pcmd->sense_buffer;
+	case ACB_ADAPTER_TYPE_A : {
+		struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
+		mask = intmask_org & ~(ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE |
+			     ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE);
+		writel(mask, &reg->outbound_intmask);
+		acb->outbound_int_enable = ~(intmask_org & mask) & 0x000000ff;
+		}
+		break;
 
-	pcmd->result = DID_OK << 16;
-	if (sensebuffer) {
-		int sense_data_length =
-			sizeof (struct SENSE_DATA) < sizeof (pcmd->sense_buffer)
-			? sizeof (struct SENSE_DATA) : sizeof (pcmd->sense_buffer);
-		memset(sensebuffer, 0, sizeof (pcmd->sense_buffer));
-		memcpy(sensebuffer, ccb->arcmsr_cdb.SenseData, sense_data_length);
-		sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
-		sensebuffer->Valid = 1;
+	case ACB_ADAPTER_TYPE_B : {
+		struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+		mask = intmask_org | (ARCMSR_IOP2DRV_DATA_WRITE_OK | \
+			ARCMSR_IOP2DRV_DATA_READ_OK | ARCMSR_IOP2DRV_CDB_DONE);
+		writel(mask, reg->iop2drv_doorbell_mask_reg);
+		acb->outbound_int_enable = (intmask_org | mask) & 0x0000000f;
+		}
 	}
 }
 
-static uint8_t arcmsr_wait_msgint_ready(struct AdapterControlBlock *acb)
-{
-	struct MessageUnit __iomem *reg = acb->pmu;
-	uint32_t Index;
-	uint8_t Retries = 0x00;
-
-	do {
-		for (Index = 0; Index < 100; Index++) {
-			if (readl(&reg->outbound_intstatus)
-				& ARCMSR_MU_OUTBOUND_MESSAGE0_INT) {
-				writel(ARCMSR_MU_OUTBOUND_MESSAGE0_INT
-					, &reg->outbound_intstatus);
-				return 0x00;
-			}
-			msleep_interruptible(10);
-		}/*max 1 seconds*/
-	} while (Retries++ < 20);/*max 20 sec*/
-	return 0xff;
-}
-
 static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
 	struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
 {
@@ -556,7 +885,7 @@ static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
 	int nseg;
 
 	ccb->pcmd = pcmd;
-	memset(arcmsr_cdb, 0, sizeof (struct ARCMSR_CDB));
+	memset(arcmsr_cdb, 0, sizeof(struct ARCMSR_CDB));
 	arcmsr_cdb->Bus = 0;
 	arcmsr_cdb->TargetID = pcmd->device->id;
 	arcmsr_cdb->LUN = pcmd->device->lun;
@@ -609,52 +938,85 @@ static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
 
 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
 {
-	struct MessageUnit __iomem *reg = acb->pmu;
 	uint32_t cdb_shifted_phyaddr = ccb->cdb_shifted_phyaddr;
 	struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
-
 	atomic_inc(&acb->ccboutstandingcount);
 	ccb->startdone = ARCMSR_CCB_START;
-	if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
-		writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
+
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A *reg = (struct MessageUnit_A *)acb->pmu;
+
+		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE)
+			writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,
 			&reg->inbound_queueport);
-	else
-		writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
-}
+		else {
+				writel(cdb_shifted_phyaddr, &reg->inbound_queueport);
+		}
+		}
+		break;
 
-void arcmsr_post_Qbuffer(struct AdapterControlBlock *acb)
-{
-	struct MessageUnit __iomem *reg = acb->pmu;
-	struct QBUFFER __iomem *pwbuffer = (struct QBUFFER __iomem *) &reg->message_wbuffer;
-	uint8_t __iomem *iop_data = (uint8_t __iomem *) pwbuffer->data;
-	int32_t allxfer_len = 0;
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+		uint32_t ending_index, index = reg->postq_index;
 
-	if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
-		acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
-		while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
-			&& (allxfer_len < 124)) {
-			writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
-			acb->wqbuf_firstindex++;
-			acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
-			iop_data++;
-			allxfer_len++;
+		ending_index = ((index + 1) % ARCMSR_MAX_HBB_POSTQUEUE);
+		writel(0, &reg->post_qbuffer[ending_index]);
+		if (arcmsr_cdb->Flags & ARCMSR_CDB_FLAG_SGL_BSIZE) {
+			writel(cdb_shifted_phyaddr | ARCMSR_CCBPOST_FLAG_SGL_BSIZE,\
+						 &reg->post_qbuffer[index]);
+		}
+		else {
+			writel(cdb_shifted_phyaddr, &reg->post_qbuffer[index]);
+		}
+		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_reg);
 		}
-		writel(allxfer_len, &pwbuffer->data_len);
-		writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK
-			, &reg->inbound_doorbell);
+		break;
 	}
 }
 
-static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
+static void arcmsr_stop_hba_bgrb(struct AdapterControlBlock *acb)
 {
-	struct MessageUnit __iomem *reg = acb->pmu;
-
+	struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
 	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
 	writel(ARCMSR_INBOUND_MESG0_STOP_BGRB, &reg->inbound_msgaddr0);
-	if (arcmsr_wait_msgint_ready(acb))
+
+	if (arcmsr_hba_wait_msgint_ready(acb)) {
+		printk(KERN_NOTICE
+			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
+			, acb->host->host_no);
+	}
+}
+
+static void arcmsr_stop_hbb_bgrb(struct AdapterControlBlock *acb)
+{
+	struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+	acb->acb_flags &= ~ACB_F_MSG_START_BGRB;
+	writel(ARCMSR_MESSAGE_STOP_BGRB, reg->drv2iop_doorbell_reg);
+
+	if (arcmsr_hbb_wait_msgint_ready(acb)) {
 		printk(KERN_NOTICE
 			"arcmsr%d: wait 'stop adapter background rebulid' timeout \n"
 			, acb->host->host_no);
+	}
+}
+
+static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		arcmsr_stop_hba_bgrb(acb);
+		}
+		break;
+
+	case ACB_ADAPTER_TYPE_B: {
+		arcmsr_stop_hbb_bgrb(acb);
+		}
+		break;
+	}
 }
 
 static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
@@ -665,151 +1027,260 @@ static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
 		acb->dma_coherent_handle);
 }
 
-static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb)
+void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
 {
-	struct MessageUnit __iomem *reg = acb->pmu;
-	struct CommandControlBlock *ccb;
-	uint32_t flag_ccb, outbound_intstatus, outbound_doorbell;
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
+		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK, &reg->inbound_doorbell);
+		}
+		break;
 
-	outbound_intstatus = readl(&reg->outbound_intstatus)
-		& acb->outbound_int_enable;
-	writel(outbound_intstatus, &reg->outbound_intstatus);
-	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_DOORBELL_INT) {
-		outbound_doorbell = readl(&reg->outbound_doorbell);
-		writel(outbound_doorbell, &reg->outbound_doorbell);
-		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK) {
-			struct QBUFFER __iomem * prbuffer =
-				(struct QBUFFER __iomem *) &reg->message_rbuffer;
-			uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
-			int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
-
-			rqbuf_lastindex = acb->rqbuf_lastindex;
-			rqbuf_firstindex = acb->rqbuf_firstindex;
-			iop_len = readl(&prbuffer->data_len);
-			my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1)
-					&(ARCMSR_MAX_QBUFFER - 1);
-			if (my_empty_len >= iop_len) {
-				while (iop_len > 0) {
-					acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
-					acb->rqbuf_lastindex++;
-					acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
-					iop_data++;
-					iop_len--;
-				}
-				writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
-					&reg->inbound_doorbell);
-			} else
-				acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
-		}
-		if (outbound_doorbell & ARCMSR_OUTBOUND_IOP331_DATA_READ_OK) {
-			acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
-			if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
-				struct QBUFFER __iomem * pwbuffer =
-						(struct QBUFFER __iomem *) &reg->message_wbuffer;
-				uint8_t __iomem * iop_data = (uint8_t __iomem *) pwbuffer->data;
-				int32_t allxfer_len = 0;
-
-				acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
-				while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
-					&& (allxfer_len < 124)) {
-					writeb(acb->wqbuffer[acb->wqbuf_firstindex], iop_data);
-					acb->wqbuf_firstindex++;
-					acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
-					iop_data++;
-					allxfer_len++;
-				}
-				writel(allxfer_len, &pwbuffer->data_len);
-				writel(ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK,
-					&reg->inbound_doorbell);
-			}
-			if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
-				acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
+	case ACB_ADAPTER_TYPE_B: {
+		struct MessageUnit_B *reg = (struct MessageUnit_B *)acb->pmu;
+		writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell_reg);
 		}
+		break;
 	}
-	if (outbound_intstatus & ARCMSR_MU_OUTBOUND_POSTQUEUE_INT) {
-		int id, lun;
+}
+
+static void arcmsr_iop_message_wrote(struct AdapterControlBlock *acb)
+{
+	switch (acb->adapter_type) {
+	case ACB_ADAPTER_TYPE_A: {
+		struct MessageUnit_A __iomem *reg = (struct MessageUnit_A *)acb->pmu;
 		/*
-		****************************************************************
-		**	      areca cdb command done
-		****************************************************************
+		** push inbound doorbell tell iop, driver data write ok
+		** and wait reply on next hwinterrupt for next Qbuffer post
 		*/