[SCSI] megaraid_sas: support for 1078 type controller added

This patch adds support for 1078 type controller (device id : 0x60).

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

1 files changed, 97 insertions, 1 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 0b738243782e..7de267e14458 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -60,6 +60,12 @@ static struct pci_device_id megasas_pci_table[] = {
 	 PCI_ANY_ID,
 	 },
 	{
+	 PCI_VENDOR_ID_LSI_LOGIC,
+	 PCI_DEVICE_ID_LSI_SAS1078R, // ppc IOP
+	 PCI_ANY_ID,
+	 PCI_ANY_ID,
+	},
+	{
 	 PCI_VENDOR_ID_DELL,
 	 PCI_DEVICE_ID_DELL_PERC5, // xscale IOP
 	 PCI_ANY_ID,
@@ -199,6 +205,86 @@ static struct megasas_instance_template megasas_instance_template_xscale = {
 */
 
 /**
+*	The following functions are defined for ppc (deviceid : 0x60) 
+* 	controllers
+*/
+
+/**
+ * megasas_enable_intr_ppc -	Enables interrupts
+ * @regs:			MFI register set
+ */
+static inline void
+megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
+{
+	writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
+    
+	writel(~0x80000004, &(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
+ */
+static u32
+megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
+{
+	return readl(&(regs)->outbound_scratch_pad);
+}
+
+/**
+ * megasas_clear_interrupt_ppc -	Check & clear interrupt
+ * @regs:				MFI register set
+ */
+static int 
+megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
+{
+	u32 status;
+	/*
+	 * Check if it is our interrupt
+	 */
+	status = readl(&regs->outbound_intr_status);
+
+	if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) {
+		return 1;
+	}
+
+	/*
+	 * Clear the interrupt by writing back the same value
+	 */
+	writel(status, &regs->outbound_doorbell_clear);
+
+	return 0;
+}
+/**
+ * megasas_fire_cmd_ppc -	Sends command to the FW
+ * @frame_phys_addr :		Physical address of cmd
+ * @frame_count :		Number of frames for the command
+ * @regs :			MFI register set
+ */
+static inline void 
+megasas_fire_cmd_ppc(dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)
+{
+	writel((frame_phys_addr | (frame_count<<1))|1, 
+			&(regs)->inbound_queue_port);
+}
+
+static struct megasas_instance_template megasas_instance_template_ppc = {
+	
+	.fire_cmd = megasas_fire_cmd_ppc,
+	.enable_intr = megasas_enable_intr_ppc,
+	.clear_intr = megasas_clear_intr_ppc,
+	.read_fw_status_reg = megasas_read_fw_status_reg_ppc,
+};
+
+/**
+*	This is the end of set of functions & definitions
+* 	specific to ppc (deviceid : 0x60) controllers
+*/
+
+/**
  * megasas_disable_intr -	Disables interrupts
  * @regs:			MFI register set
  */
@@ -1607,7 +1693,17 @@ static int megasas_init_mfi(struct megasas_instance *instance)
 
 	reg_set = instance->reg_set;
 
-	instance->instancet = &megasas_instance_template_xscale;
+	switch(instance->pdev->device)
+	{
+		case PCI_DEVICE_ID_LSI_SAS1078R:	
+			instance->instancet = &megasas_instance_template_ppc;
+			break;
+		case PCI_DEVICE_ID_LSI_SAS1064R:
+		case PCI_DEVICE_ID_DELL_PERC5:
+		default:
+			instance->instancet = &megasas_instance_template_xscale;
+			break;
+	}
 
 	/*
 	 * We expect the FW state to be READY