[PATCH 4/9] scsi: megaraid_sas - Add new controller 0x73(new SAS2) support to the driver

From: Yang, Bo
Date: Tue Feb 17 2009 - 10:52:24 EST

Add new controller 0x73(new SAS2) support to the MegaRAID SAS driver.

Signed-off-by Bo Yang<bo.yang@xxxxxxx>

---
drivers/scsi/megaraid/megaraid_sas.c | 145 +++++++++++++++++++++++++++++++++--
drivers/scsi/megaraid/megaraid_sas.h | 5 +
2 files changed, 144 insertions(+), 6 deletions(-)

diff -rupN linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.c linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.c
--- linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.c 2009-02-12 15:52:27.000000000 -0500
+++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.c 2009-02-12 15:54:41.000000000 -0500
@@ -76,6 +76,10 @@ static struct pci_device_id megasas_pci_
/* gen2*/
{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
/* gen2*/
+ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
+ /* skinny*/
+ {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
+ /* skinny*/
{PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
/* xscale IOP, vega */
{PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
@@ -336,6 +340,100 @@ static struct megasas_instance_template
};

/**
+ * megasas_enable_intr_skinny - Enables interrupts
+ * @regs: MFI register set
+ */
+static inline void
+megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
+{
+ writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
+
+ /* write ~0x00000005 (4 & 1) to the intr mask*/
+ writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
+
+ /* Dummy readl to force pci flush */
+ readl(&regs->outbound_intr_mask);
+}
+
+/**
+ * megasas_disable_intr_skinny - Disables interrupt
+ * @regs: MFI register set
+ */
+static inline void
+megasas_disable_intr_skinny(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_skinny - returns the current FW status value
+ * @regs: MFI register set
+ */
+static u32
+megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
+{
+ return readl(&(regs)->outbound_scratch_pad);
+}
+
+/**
+ * megasas_clear_interrupt_skinny - Check & clear interrupt
+ * @regs: MFI register set
+ */
+static int
+megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
+{
+ u32 status;
+ /*
+ * Check if it is our interrupt
+ */
+ status = readl(&regs->outbound_intr_status);
+
+ if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
+ return 1;
+ }
+
+ /*
+ * Clear the interrupt by writing back the same value
+ */
+ writel(status, &regs->outbound_intr_status);
+
+ /*
+ * dummy read to flush PCI
+ */
+ readl(&regs->outbound_intr_status);
+
+ return 0;
+}
+
+/**
+ * megasas_fire_cmd_skinny - 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_skinny(dma_addr_t frame_phys_addr, u32 frame_count,
+ struct megasas_register_set __iomem *regs)
+{
+ writel(0, &(regs)->inbound_high_queue_port);
+ writel((frame_phys_addr | (frame_count<<1))|1,
+ &(regs)->inbound_low_queue_port);
+ /*msleep(5);*/
+}
+
+static struct megasas_instance_template megasas_instance_template_skinny = {
+
+ .fire_cmd = megasas_fire_cmd_skinny,
+ .enable_intr = megasas_enable_intr_skinny,
+ .disable_intr = megasas_disable_intr_skinny,
+ .clear_intr = megasas_clear_intr_skinny,
+ .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
+};
+
+/**
* The following functions are defined for gen2 (deviceid : 0x78 0x79)
* controllers
*/
@@ -1322,7 +1420,6 @@ megasas_service_aen(struct megasas_insta
else
cmd->abort_aen = 0;

- instance->aen_cmd = NULL;
megasas_return_cmd(instance, cmd);
}

@@ -1589,16 +1686,34 @@ megasas_transition_to_ready(struct megas
/*
* Set the CLR bit in inbound doorbell
*/
- writel(MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
- &instance->reg_set->inbound_doorbell);
+ if ((instance->pdev->device == \
+ PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+
+ writel(
+ MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
+ &instance->reg_set->outbound_scratch_pad);
+ } else {
+ writel(
+ MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
+ &instance->reg_set->inbound_doorbell);
+ }

max_wait = 2;
cur_state = MFI_STATE_WAIT_HANDSHAKE;
break;

case MFI_STATE_BOOT_MESSAGE_PENDING:
- writel(MFI_INIT_HOTPLUG,
- &instance->reg_set->inbound_doorbell);
+ if ((instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+ writel(MFI_INIT_HOTPLUG,
+ &instance->reg_set->outbound_scratch_pad);
+ } else
+ writel(MFI_INIT_HOTPLUG,
+ &instance->reg_set->inbound_doorbell);

max_wait = 10;
cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
@@ -1609,7 +1724,15 @@ megasas_transition_to_ready(struct megas
* Bring it to READY state; assuming max wait 10 secs
*/
instance->instancet->disable_intr(instance->reg_set);
- writel(MFI_RESET_FLAGS, &instance->reg_set->inbound_doorbell);
+ if ((instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
+ (instance->pdev->device ==
+ PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
+ writel(MFI_RESET_FLAGS,
+ &instance->reg_set->outbound_scratch_pad);
+ } else
+ writel(MFI_RESET_FLAGS,
+ &instance->reg_set->inbound_doorbell);

max_wait = 60;
cur_state = MFI_STATE_OPERATIONAL;
@@ -2114,6 +2237,8 @@ static int megasas_init_mfi(struct megas
* Map the message registers
*/
if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
+ (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
(instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) {
instance->base_addr = pci_resource_start(instance->pdev, 1);
} else {
@@ -2144,6 +2269,10 @@ static int megasas_init_mfi(struct megas
case PCI_DEVICE_ID_LSI_SAS0079GEN2:
instance->instancet = &megasas_instance_template_gen2;
break;
+ case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
+ case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
+ instance->instancet = &megasas_instance_template_skinny;
+ break;
case PCI_DEVICE_ID_LSI_SAS1064R:
case PCI_DEVICE_ID_DELL_PERC5:
default:
@@ -2413,6 +2542,10 @@ megasas_register_aen(struct megasas_inst
"previous AEN command\n");
return ret_val;
}
+ /**
+ * set the AEN to NULL after abort AEN
+ **/
+ instance->aen_cmd = NULL;
}
}

diff -rupN linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.h linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.h
--- linux-2.6.28_orig/drivers/scsi/megaraid/megaraid_sas.h 2009-02-12 15:52:28.000000000 -0500
+++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.h 2009-02-12 15:24:58.000000000 -0500
@@ -30,6 +30,8 @@
#define PCI_DEVICE_ID_LSI_VERDE_ZCR 0x0413
#define PCI_DEVICE_ID_LSI_SAS1078GEN2 0x0078
#define PCI_DEVICE_ID_LSI_SAS0079GEN2 0x0079
+#define PCI_DEVICE_ID_LSI_SAS0073SKINNY 0x0073
+#define PCI_DEVICE_ID_LSI_SAS0071SKINNY 0x0071

/*
* =====================================
@@ -594,6 +596,9 @@ struct megasas_ctrl_info {
#define MFI_REPLY_1078_MESSAGE_INTERRUPT 0x80000000
#define MFI_REPLY_GEN2_MESSAGE_INTERRUPT 0x00000001
#define MFI_GEN2_ENABLE_INTERRUPT_MASK (0x00000001 | 0x00000004)
+#define MFI_REPLY_SKINNY_MESSAGE_INTERRUPT 0x40000000
+#define MFI_SKINNY_ENABLE_INTERRUPT_MASK (0x00000001 | 0x00000008)
+

/*
* register set for both 1068 and 1078 controllers
--
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