[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>

Documentation/scsi/ChangeLog.arcmsr

@@ -53,4 +53,19 @@
 **						for linux standard list
 **						enable usage of pci message signal interrupt
 **						follow Randy.Danlup kindness suggestion cleanup this code
+** 1.20.00.14   05/02/2007	 Erich Chen & Nick Cheng
+**						1.implement PCI-Express error recovery function and AER capability
+**						2.implement the selection of ARCMSR_MAX_XFER_SECTORS_B=4096
+**				 		if firmware version is newer than 1.42
+**						3.modify arcmsr_iop_reset to improve the ability
+**						4.modify the ISR, arcmsr_interrupt routine,to prevent the
+**						inconsistency with sg_mod driver if application	directly calls
+**						the arcmsr driver w/o passing through scsi mid layer
+**						specially thanks to Yanmin Zhang's openhanded help about AER
+** 1.20.00.15   08/30/2007	 Erich Chen & Nick Cheng
+**						1. support ARC1200/1201/1202 SATA RAID adapter, which is named
+**						ACB_ADAPTER_TYPE_B
+**						2. modify the arcmsr_pci_slot_reset function
+**						3. modify the arcmsr_pci_ers_disconnect_forepart function
+**						4. modify the arcmsr_pci_ers_need_reset_forepart function
 **************************************************************************

drivers/scsi/Kconfig

@@ -543,19 +543,32 @@ config SCSI_IN2000
 	  module will be called in2000.
 
 config SCSI_ARCMSR
-	tristate "ARECA ARC11X0[PCI-X]/ARC12X0[PCI-EXPRESS] SATA-RAID support"
+	tristate "ARECA (ARC11xx/12xx/13xx/16xx) SATA/SAS RAID Host Adapter"
 	depends on PCI && SCSI
 	help
-	  This driver supports all of ARECA's SATA RAID controller cards.
+	  This driver supports all of ARECA's SATA/SAS RAID controller cards.
 	  This is an ARECA-maintained driver by Erich Chen.
-	  If you have any problems, please mail to: < erich@areca.com.tw >
+	  If you have any problems, please mail to: <erich@areca.com.tw>.
 	  Areca supports Linux RAID config tools.
-
-	  < http://www.areca.com.tw >
+	  Please link <http://www.areca.com.tw>
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called arcmsr (modprobe arcmsr).
 
+config SCSI_ARCMSR_AER
+	bool "Enable PCI Error Recovery Capability in Areca Driver(ARCMSR)"
+	depends on SCSI_ARCMSR && PCIEAER
+	default n
+	help
+	  The advanced error reporting(AER) capability is "NOT" provided by
+	  ARC1200/1201/1202 SATA RAID controllers cards.
+	  If your card is one of ARC1200/1201/1202, please use the default setting, n.
+	  If your card is other models, you could pick it
+	  on condition that the kernel version is greater than 2.6.19.
+	  This function is maintained driver by Nick Cheng. If you have any
+	  problems or suggestion, you are welcome to contact with <nick.cheng@areca.com.tw>.
+	  To enable this function, choose Y here.
+
 source "drivers/scsi/megaraid/Kconfig.megaraid"
 
 config SCSI_HPTIOP

drivers/scsi/arcmsr/arcmsr_attr.c

@@ -8,7 +8,7 @@
 ** 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
@@ -49,6 +49,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
+#include <linux/pci.h>
 
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
@@ -58,15 +59,11 @@
 
 struct class_device_attribute *arcmsr_host_attrs[];
 
-static ssize_t
-arcmsr_sysfs_iop_message_read(struct kobject *kobj,
-			      struct bin_attribute *bin_attr,
-			      char *buf, loff_t off, size_t count)
+static ssize_t arcmsr_sysfs_iop_message_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
 {
 	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
 	struct Scsi_Host *host = class_to_shost(cdev);
 	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
-	struct MessageUnit __iomem *reg = acb->pmu;
 	uint8_t *pQbuffer,*ptmpQbuffer;
 	int32_t allxfer_len = 0;
 
@@ -85,12 +82,13 @@ arcmsr_sysfs_iop_message_read(struct kobject *kobj,
 		allxfer_len++;
 	}
 	if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
-		struct QBUFFER __iomem * prbuffer = (struct QBUFFER __iomem *)
-					&reg->message_rbuffer;
-		uint8_t __iomem * iop_data = (uint8_t __iomem *)prbuffer->data;
+		struct QBUFFER *prbuffer;
+		uint8_t *iop_data;
 		int32_t iop_len;
 
 		acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
+		prbuffer = arcmsr_get_iop_rqbuffer(acb);
+		iop_data = (uint8_t *)prbuffer->data;
 		iop_len = readl(&prbuffer->data_len);
 		while (iop_len > 0) {
 			acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
@@ -99,16 +97,12 @@ arcmsr_sysfs_iop_message_read(struct kobject *kobj,
 			iop_data++;
 			iop_len--;
 		}
-		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK,
-				&reg->inbound_doorbell);
+		arcmsr_iop_message_read(acb);
 	}
 	return (allxfer_len);
 }
 
-static ssize_t
-arcmsr_sysfs_iop_message_write(struct kobject *kobj,
-			       struct bin_attribute *bin_attr,
-			       char *buf, loff_t off, size_t count)
+static ssize_t arcmsr_sysfs_iop_message_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
 {
 	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
 	struct Scsi_Host *host = class_to_shost(cdev);
@@ -126,7 +120,7 @@ arcmsr_sysfs_iop_message_write(struct kobject *kobj,
 	wqbuf_lastindex = acb->wqbuf_lastindex;
 	wqbuf_firstindex = acb->wqbuf_firstindex;
 	if (wqbuf_lastindex != wqbuf_firstindex) {
-		arcmsr_post_Qbuffer(acb);
+		arcmsr_post_ioctldata2iop(acb);
 		return 0;	/*need retry*/
 	} else {
 		my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
@@ -144,7 +138,7 @@ arcmsr_sysfs_iop_message_write(struct kobject *kobj,
 			if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
 				acb->acb_flags &=
 					~ACB_F_MESSAGE_WQBUFFER_CLEARED;
-				arcmsr_post_Qbuffer(acb);
+				arcmsr_post_ioctldata2iop(acb);
 			}
 			return count;
 		} else {
@@ -153,15 +147,11 @@ arcmsr_sysfs_iop_message_write(struct kobject *kobj,
 	}
 }
 
-static ssize_t
-arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
-			       struct bin_attribute *bin_attr,
-			       char *buf, loff_t off, size_t count)
+static ssize_t arcmsr_sysfs_iop_message_clear(struct kobject *kobj, char *buf, loff_t off, size_t count)
 {
 	struct class_device *cdev = container_of(kobj,struct class_device,kobj);
 	struct Scsi_Host *host = class_to_shost(cdev);
 	struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
-	struct MessageUnit __iomem *reg = acb->pmu;
 	uint8_t *pQbuffer;
 
 	if (!capable(CAP_SYS_ADMIN))
@@ -169,8 +159,7 @@ arcmsr_sysfs_iop_message_clear(struct kobject *kobj,
 
 	if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
 		acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
-		writel(ARCMSR_INBOUND_DRIVER_DATA_READ_OK
-				, &reg->inbound_doorbell);
+		arcmsr_iop_message_read(acb);
 	}
 	acb->acb_flags |=
 		(ACB_F_MESSAGE_WQBUFFER_CLEARED
@@ -191,6 +180,7 @@ static struct bin_attribute arcmsr_sysfs_message_read_attr = {
 	.attr = {
 		.name = "mu_read",
 		.mode = S_IRUSR ,
+		.owner = THIS_MODULE,
 	},
 	.size = 1032,
 	.read = arcmsr_sysfs_iop_message_read,
@@ -200,6 +190,7 @@ static struct bin_attribute arcmsr_sysfs_message_write_attr = {
 	.attr = {
 		.name = "mu_write",
 		.mode = S_IWUSR,
+		.owner = THIS_MODULE,
 	},
 	.size = 1032,
 	.write = arcmsr_sysfs_iop_message_write,
@@ -209,6 +200,7 @@ static struct bin_attribute arcmsr_sysfs_message_clear_attr = {
 	.attr = {
 		.name = "mu_clear",
 		.mode = S_IWUSR,
+		.owner = THIS_MODULE,
 	},
 	.size = 1,
 	.write = arcmsr_sysfs_iop_message_clear,
@@ -219,31 +211,26 @@ int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *acb)
 	struct Scsi_Host *host = acb->host;
 	int error;
 
-	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_read_attr);
+	error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_read failed\n");
 		goto error_bin_file_message_read;
 	}
-	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_write_attr);
+	error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_write failed\n");
 		goto error_bin_file_message_write;
 	}
-	error = sysfs_create_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_clear_attr);
+	error = sysfs_create_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_clear_attr);
 	if (error) {
 		printk(KERN_ERR "arcmsr: alloc sysfs mu_clear failed\n");
 		goto error_bin_file_message_clear;
 	}
 	return 0;
 error_bin_file_message_clear:
-	sysfs_remove_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_write_attr);
+	sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
 error_bin_file_message_write:
-	sysfs_remove_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_read_attr);
+	sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
 error_bin_file_message_read:
 	return error;
 }
@@ -252,12 +239,9 @@ void
 arcmsr_free_sysfs_attr(struct AdapterControlBlock *acb) {
 	struct Scsi_Host *host = acb->host;
 
-	sysfs_remove_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_clear_attr);
-	sysfs_remove_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_write_attr);
-	sysfs_remove_bin_file(&host->shost_classdev.kobj,
-				&arcmsr_sysfs_message_read_attr);
+	sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_clear_attr);
+	sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_write_attr);
+	sysfs_remove_bin_file(&host->shost_classdev.kobj, &arcmsr_sysfs_message_read_attr);
 }
 
 

include/linux/pci_ids.h

@@ -2057,6 +2057,9 @@
 #define PCI_DEVICE_ID_ARECA_1130	0x1130
 #define PCI_DEVICE_ID_ARECA_1160	0x1160
 #define PCI_DEVICE_ID_ARECA_1170	0x1170
+#define PCI_DEVICE_ID_ARECA_1200	0x1200
+#define PCI_DEVICE_ID_ARECA_1201	0x1201
+#define PCI_DEVICE_ID_ARECA_1202	0x1202
 #define PCI_DEVICE_ID_ARECA_1210	0x1210
 #define PCI_DEVICE_ID_ARECA_1220	0x1220
 #define PCI_DEVICE_ID_ARECA_1230	0x1230