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[SCSI] megaraid_sas: Add new megaraid SAS 2 controller support to the…
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… driver

Add the new megaraid sas 2 controller to the driver.  megaraid sas2 is
LSI next generation SAS products.  driver add the interface to support
this product.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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Yang, Bo authored and James Bottomley committed Oct 29, 2009
1 parent 72c4fd3 commit 8791112
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Showing 2 changed files with 138 additions and 5 deletions.
139 changes: 134 additions & 5 deletions drivers/scsi/megaraid/megaraid_sas.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,10 @@ static struct pci_device_id megasas_pci_table[] = {
/* 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)},
Expand Down Expand Up @@ -334,6 +338,99 @@ static struct megasas_instance_template megasas_instance_template_ppc = {
.read_fw_status_reg = megasas_read_fw_status_reg_ppc,
};

/**
* 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);

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);
}

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
Expand Down Expand Up @@ -1587,16 +1684,34 @@ megasas_transition_to_ready(struct megasas_instance* instance)
/*
* 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->reserved_0[0]);
} 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->reserved_0[0]);
} else
writel(MFI_INIT_HOTPLUG,
&instance->reg_set->inbound_doorbell);

max_wait = 10;
cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
Expand All @@ -1607,7 +1722,15 @@ megasas_transition_to_ready(struct megasas_instance* instance)
* 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->reserved_0[0]);
} else
writel(MFI_RESET_FLAGS,
&instance->reg_set->inbound_doorbell);

max_wait = 60;
cur_state = MFI_STATE_OPERATIONAL;
Expand Down Expand Up @@ -2112,6 +2235,8 @@ static int megasas_init_mfi(struct megasas_instance *instance)
* 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 {
Expand Down Expand Up @@ -2142,6 +2267,10 @@ static int megasas_init_mfi(struct megasas_instance *instance)
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:
Expand Down
4 changes: 4 additions & 0 deletions drivers/scsi/megaraid/megaraid_sas.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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

/*
* =====================================
Expand Down Expand Up @@ -584,6 +586,8 @@ 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)

/*
* register set for both 1068 and 1078 controllers
Expand Down

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