[SCSI] megaraid_sas: function pointer for disable interrupt

This patch adds function pointer to invoke disable interrupt for
xscale and ppc IOP based controllers. Removes old implementation that checks
for controller type in megasas_disable_intr.

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

2 files changed, 33 insertions, 23 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index e177fc5c5dd..c3b50b37579 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -135,6 +135,19 @@ megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
 }
 
 /**
+ * megasas_disable_intr_xscale -Disables interrupt
+ * @regs:			MFI register set
+ */
+static inline void
+megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
+{
+	u32 mask = 0x1f;
+	writel(mask, &regs->outbound_intr_mask);
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_intr_mask);
+}
+
+/**
  * megasas_read_fw_status_reg_xscale - returns the current FW status value
  * @regs:			MFI register set
  */
@@ -185,6 +198,7 @@ static struct megasas_instance_template megasas_instance_template_xscale = {
 
 	.fire_cmd = megasas_fire_cmd_xscale,
 	.enable_intr = megasas_enable_intr_xscale,
+	.disable_intr = megasas_disable_intr_xscale,
 	.clear_intr = megasas_clear_intr_xscale,
 	.read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 };
@@ -215,6 +229,19 @@ megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
 }
 
 /**
+ * megasas_disable_intr_ppc -	Disable interrupt
+ * @regs:			MFI register set
+ */
+static inline void
+megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
+{
+	u32 mask = 0xFFFFFFFF;
+	writel(mask, &regs->outbound_intr_mask);
+	/* Dummy readl to force pci flush */
+	readl(&regs->outbound_intr_mask);
+}
+
+/**
  * megasas_read_fw_status_reg_ppc - returns the current FW status value
  * @regs:			MFI register set
  */
@@ -265,6 +292,7 @@ static struct megasas_instance_template megasas_instance_template_ppc = {
 	
 	.fire_cmd = megasas_fire_cmd_ppc,
 	.enable_intr = megasas_enable_intr_ppc,
+	.disable_intr = megasas_disable_intr_ppc,
 	.clear_intr = megasas_clear_intr_ppc,
 	.read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 };
@@ -275,25 +303,6 @@ static struct megasas_instance_template megasas_instance_template_ppc = {
 */
 
 /**
- * megasas_disable_intr -	Disables interrupts
- * @regs:			MFI register set
- */
-static inline void
-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 */
-	readl(&regs->outbound_intr_mask);
-}
-
-/**
  * megasas_issue_polled -	Issues a polling command
  * @instance:			Adapter soft state
  * @cmd:			Command packet to be issued 
@@ -1293,7 +1302,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
 			/*
 			 * Bring it to READY state; assuming max wait 10 secs
 			 */
-			megasas_disable_intr(instance);
+			instance->instancet->disable_intr(instance->reg_set);
 			writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell);
 
 			max_wait = 10;
@@ -1799,7 +1808,7 @@ static int megasas_init_mfi(struct megasas_instance *instance)
 	/*
 	 * disable the intr before firing the init frame to FW
 	 */
-	megasas_disable_intr(instance);
+	instance->instancet->disable_intr(instance->reg_set);
 
 	/*
 	 * Issue the init frame in polled mode
@@ -2279,7 +2288,7 @@ 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);
+	instance->instancet->disable_intr(instance->reg_set);
 	free_irq(instance->pdev->irq, instance);
 
 	megasas_release_mfi(instance);
@@ -2409,7 +2418,7 @@ static void megasas_detach_one(struct pci_dev *pdev)
 
 	pci_set_drvdata(instance->pdev, NULL);
 
-	megasas_disable_intr(instance);
+	instance->instancet->disable_intr(instance->reg_set);
 
 	free_irq(instance->pdev->irq, instance);
 
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 930c06d0a4f..74feffe2fff 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1049,6 +1049,7 @@ struct megasas_evt_detail {
 	void (*fire_cmd)(dma_addr_t ,u32 ,struct megasas_register_set __iomem *);
 
 	void (*enable_intr)(struct megasas_register_set __iomem *) ;
+	void (*disable_intr)(struct megasas_register_set __iomem *);
 
 	int (*clear_intr)(struct megasas_register_set __iomem *);