[SCSI] megaraid_sas: zcr with fix

The patch adds support for a ZCR controller (Device ID : 0x413).

It also has a critical bug fix :

Disable controller interrupt before firing INIT cmd to FW.  Interrupt
is enabled after required initialization is over. This is done to
ensure that driver is ready to handle interrupts when it is generated
by the controller.

Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

3 files changed, 56 insertions, 13 deletions

diff --git a/Documentation/scsi/ChangeLog.megaraid_sas b/Documentation/scsi/ChangeLog.megaraid_sas
index 0a85a7e..d9e5960 100644
--- a/Documentation/scsi/ChangeLog.megaraid_sas
+++ b/Documentation/scsi/ChangeLog.megaraid_sas
@@ -1,4 +1,20 @@
 
+1 Release Date    : Sun May 14 22:49:52 PDT 2006 - Sumant Patro <Sumant.Patro@lsil.com>
+2 Current Version : 00.00.03.01
+3 Older Version   : 00.00.02.04
+
+i.	Added support for ZCR controller.
+
+		New device id 0x413 added.
+
+ii.	Bug fix : Disable controller interrupt before firing INIT cmd to FW.
+
+		Interrupt is enabled after required initialization is over.
+		This is done to ensure that driver is ready to handle interrupts when
+		it is generated by the controller.
+
+		-Sumant Patro <Sumant.Patro@lsil.com>
+
 1 Release Date    : Wed Feb 03 14:31:44 PST 2006 - Sumant Patro <Sumant.Patro@lsil.com>
 2 Current Version : 00.00.02.04
 3 Older Version   : 00.00.02.04 
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 0c9516f..3e6f9fe 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -10,7 +10,7 @@
  *	   2 of the License, or (at your option) any later version.
  *
  * FILE		: megaraid_sas.c
- * Version	: v00.00.02.04
+ * Version	: v00.00.03.01
  *
  * Authors:
  * 	Sreenivas Bagalkote	<Sreenivas.Bagalkote@lsil.com>
@@ -55,19 +55,25 @@ static struct pci_device_id megasas_pci_table[] = {
 
 	{
 	 PCI_VENDOR_ID_LSI_LOGIC,
-	 PCI_DEVICE_ID_LSI_SAS1064R, // xscale IOP
+	 PCI_DEVICE_ID_LSI_SAS1064R, /* xscale IOP */
 	 PCI_ANY_ID,
 	 PCI_ANY_ID,
 	 },
 	{
 	 PCI_VENDOR_ID_LSI_LOGIC,
-	 PCI_DEVICE_ID_LSI_SAS1078R, // ppc IOP
+	 PCI_DEVICE_ID_LSI_SAS1078R, /* ppc IOP */
 	 PCI_ANY_ID,
 	 PCI_ANY_ID,
 	},
 	{
+	 PCI_VENDOR_ID_LSI_LOGIC,
+	 PCI_DEVICE_ID_LSI_VERDE_ZCR,	/* xscale IOP, vega */
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	 },
+	{
 	 PCI_VENDOR_ID_DELL,
-	 PCI_DEVICE_ID_DELL_PERC5, // xscale IOP
+	 PCI_DEVICE_ID_DELL_PERC5, /* xscale IOP */
 	 PCI_ANY_ID,
 	 PCI_ANY_ID,
 	 },
@@ -289,9 +295,14 @@ static struct megasas_instance_template megasas_instance_template_ppc = {
  * @regs:			MFI register set
  */
 static inline void
-megasas_disable_intr(struct megasas_register_set __iomem * regs)
+megasas_disable_intr(struct megasas_instance *instance)
 {
 	u32 mask = 0x1f; 
+	struct megasas_register_set __iomem *regs = instance->reg_set;
+
+	if(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078R)
+		mask = 0xffffffff;
+
 	writel(mask, &regs->outbound_intr_mask);
 
 	/* Dummy readl to force pci flush */
@@ -1260,7 +1271,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
 			/*
 			 * Bring it to READY state; assuming max wait 2 secs
 			 */
-			megasas_disable_intr(instance->reg_set);
+			megasas_disable_intr(instance);
 			writel(MFI_INIT_READY, &instance->reg_set->inbound_doorbell);
 
 			max_wait = 10;
@@ -1757,6 +1768,11 @@ static int megasas_init_mfi(struct megasas_instance *instance)
 	init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
 
 	/*
+	 * disable the intr before firing the init frame to FW
+	 */
+	megasas_disable_intr(instance);
+
+	/*
 	 * Issue the init frame in polled mode
 	 */
 	if (megasas_issue_polled(instance, cmd)) {
@@ -2234,7 +2250,7 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	megasas_mgmt_info.max_index--;
 
 	pci_set_drvdata(pdev, NULL);
-	megasas_disable_intr(instance->reg_set);
+	megasas_disable_intr(instance);
 	free_irq(instance->pdev->irq, instance);
 
 	megasas_release_mfi(instance);
@@ -2364,7 +2380,7 @@ static void megasas_detach_one(struct pci_dev *pdev)
 
 	pci_set_drvdata(instance->pdev, NULL);
 
-	megasas_disable_intr(instance->reg_set);
+	megasas_disable_intr(instance);
 
 	free_irq(instance->pdev->irq, instance);
 
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 927d6ff..3531a14 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -18,9 +18,16 @@
 /**
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION				"00.00.02.04"
-#define MEGASAS_RELDATE				"Feb 03, 2006"
-#define MEGASAS_EXT_VERSION			"Fri Feb 03 14:31:44 PST 2006"
+#define MEGASAS_VERSION				"00.00.03.01"
+#define MEGASAS_RELDATE				"May 14, 2006"
+#define MEGASAS_EXT_VERSION			"Sun May 14 22:49:52 PDT 2006"
+
+/*
+ * Device IDs
+ */
+#define	PCI_DEVICE_ID_LSI_SAS1078R		0x0060
+#define	PCI_DEVICE_ID_LSI_VERDE_ZCR		0x0413
+
 /*
  * =====================================
  * MegaRAID SAS MFI firmware definitions
@@ -554,7 +561,11 @@ struct megasas_ctrl_info {
 #define MFI_POLL_TIMEOUT_SECS			10
 
 #define MFI_REPLY_1078_MESSAGE_INTERRUPT	0x80000000
-#define PCI_DEVICE_ID_LSI_SAS1078R		0x00000060
+
+/*
+* register set for both 1068 and 1078 controllers
+* structure extended for 1078 registers
+*/
  
 struct megasas_register_set {
 	u32 	reserved_0[4];			/*0000h*/
@@ -1150,10 +1161,10 @@ struct compat_megasas_iocpacket {
 	struct compat_iovec sgl[MAX_IOCTL_SGE];
 } __attribute__ ((packed));
 
+#define MEGASAS_IOC_FIRMWARE32	_IOWR('M', 1, struct compat_megasas_iocpacket)
 #endif
 
 #define MEGASAS_IOC_FIRMWARE	_IOWR('M', 1, struct megasas_iocpacket)
-#define MEGASAS_IOC_FIRMWARE32	_IOWR('M', 1, struct compat_megasas_iocpacket)
 #define MEGASAS_IOC_GET_AEN	_IOW('M', 3, struct megasas_aen)
 
 struct megasas_mgmt_info {