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Subject[PATCH 5/10] scsi: megaraid_sas - Fixed load/unload issue and Fire the system pd DCDB cmd to MegaRAID SAS FW to get the system PDs
Fixed the Driver load / Unload issue and Fire the system PD DCDB cmd to MegaRAID SAS FW to get the system PDs List

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

---
drivers/scsi/megaraid/megaraid_sas.c | 105 +++++++++++++++++++++++++++++++++--
drivers/scsi/megaraid/megaraid_sas.h | 83 +++++++++++++++++++++++++++
2 files changed, 183 insertions(+), 5 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 2009-05-04 20:21:03.000000000 -0400
+++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.c 2009-05-04 20:22:17.000000000 -0400
@@ -1686,7 +1686,7 @@ megasas_transition_to_ready(struct megas

writel(
MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->outbound_scratch_pad);
} else {
writel(
MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
@@ -1703,7 +1703,7 @@ megasas_transition_to_ready(struct megas
(instance->pdev->device ==
PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
writel(MFI_INIT_HOTPLUG,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->outbound_scratch_pad);
} else
writel(MFI_INIT_HOTPLUG,
&instance->reg_set->inbound_doorbell);
@@ -1722,7 +1722,7 @@ megasas_transition_to_ready(struct megas
(instance->pdev->device ==
PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
writel(MFI_RESET_FLAGS,
- &instance->reg_set->reserved_0[0]);
+ &instance->reg_set->outbound_scratch_pad);
} else
writel(MFI_RESET_FLAGS,
&instance->reg_set->inbound_doorbell);
@@ -2031,6 +2031,97 @@ static int megasas_alloc_cmds(struct meg
return 0;
}

+/*
+ * megasas_get_pd_list_info - Returns FW's pd_list structure
+ * @instance: Adapter soft state
+ * @pd_list: pd_list structure
+ *
+ * Issues an internal command (DCMD) to get the FW's controller PD
+ * list structure. This information is mainly used to find out SYSTEM
+ * supported by the FW.
+ */
+static int
+megasas_get_pd_list(struct megasas_instance *instance)
+{
+ int ret = 0, pd_index = 0;
+ struct megasas_cmd *cmd;
+ struct megasas_dcmd_frame *dcmd;
+ struct MR_PD_LIST *ci;
+ struct MR_PD_ADDRESS *pd_addr;
+ dma_addr_t ci_h = 0;
+
+ cmd = megasas_get_cmd(instance);
+
+ if (!cmd) {
+ printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
+ return -ENOMEM;
+ }
+
+ dcmd = &cmd->frame->dcmd;
+
+ ci = pci_alloc_consistent(instance->pdev,
+ MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
+
+ if (!ci) {
+ printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
+ megasas_return_cmd(instance, cmd);
+ return -ENOMEM;
+ }
+
+ memset(ci, 0, sizeof(*ci));
+ memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
+
+ dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
+ dcmd->mbox.b[1] = 0;
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_READ;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
+ dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
+ dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
+
+ if (!megasas_issue_polled(instance, cmd)) {
+ ret = 0;
+ } else {
+ ret = -1;
+ }
+
+ /*
+ * the following function will get the instance PD LIST.
+ */
+
+ pd_addr = ci->addr;
+
+ if ( ret == 0 &&
+ (ci->count <
+ (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
+
+ memset(instance->pd_list, 0,
+ MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
+
+ for (pd_index = 0; pd_index < ci->count; pd_index++) {
+
+ instance->pd_list[pd_addr->deviceId].tid =
+ pd_addr->deviceId;
+ instance->pd_list[pd_addr->deviceId].driveType =
+ pd_addr->scsiDevType;
+ instance->pd_list[pd_addr->deviceId].driveState =
+ MR_PD_STATE_SYSTEM;
+ pd_addr++;
+ }
+ }
+
+ pci_free_consistent(instance->pdev,
+ MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
+ ci, ci_h);
+ megasas_return_cmd(instance, cmd);
+
+ return ret;
+}
+
/**
* megasas_get_controller_info - Returns FW's controller structure
* @instance: Adapter soft state
@@ -2310,8 +2401,8 @@ static int megasas_init_mfi(struct megas
reply_q_sz = context_sz * (instance->max_fw_cmds + 1);

instance->reply_queue = pci_alloc_consistent(instance->pdev,
- reply_q_sz,
- &instance->reply_queue_h);
+ reply_q_sz,
+ &instance->reply_queue_h);

if (!instance->reply_queue) {
printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
@@ -2321,6 +2412,10 @@ static int megasas_init_mfi(struct megas
if (megasas_issue_init_mfi(instance))
goto fail_fw_init;

+ memset(instance->pd_list, 0 ,
+ (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
+ megasas_get_pd_list(instance);
+
ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);

/*
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 2009-05-04 20:21:05.000000000 -0400
+++ linux-2.6.28_new/drivers/scsi/megaraid/megaraid_sas.h 2009-05-04 20:00:32.000000000 -0400
@@ -133,6 +133,7 @@
#define MR_DCMD_CLUSTER 0x08000000
#define MR_DCMD_CLUSTER_RESET_ALL 0x08010100
#define MR_DCMD_CLUSTER_RESET_LD 0x08010200
+#define MR_DCMD_PD_LIST_QUERY 0x02010100

#define MR_EVT_CFG_CLEARED 0x0004

@@ -264,10 +265,89 @@ enum MR_EVT_ARGS {
MR_EVT_ARGS_STR,
MR_EVT_ARGS_TIME,
MR_EVT_ARGS_ECC,
+ MR_EVT_ARGS_LD_PROP,
+ MR_EVT_ARGS_PD_SPARE,
+ MR_EVT_ARGS_PD_INDEX,
+ MR_EVT_ARGS_DIAG_PASS,
+ MR_EVT_ARGS_DIAG_FAIL,
+ MR_EVT_ARGS_PD_LBA_LBA,
+ MR_EVT_ARGS_PORT_PHY,
+ MR_EVT_ARGS_PD_MISSING,
+ MR_EVT_ARGS_PD_ADDRESS,
+ MR_EVT_ARGS_BITMAP,
+ MR_EVT_ARGS_CONNECTOR,
+ MR_EVT_ARGS_PD_PD,
+ MR_EVT_ARGS_PD_FRU,
+ MR_EVT_ARGS_PD_PATHINFO,
+ MR_EVT_ARGS_PD_POWER_STATE,
+ MR_EVT_ARGS_GENERIC,
+};

+/*
+ * define constants for device list query options
+ */
+enum MR_PD_QUERY_TYPE {
+ MR_PD_QUERY_TYPE_ALL = 0,
+ MR_PD_QUERY_TYPE_STATE = 1,
+ MR_PD_QUERY_TYPE_POWER_STATE = 2,
+ MR_PD_QUERY_TYPE_MEDIA_TYPE = 3,
+ MR_PD_QUERY_TYPE_SPEED = 4,
+ MR_PD_QUERY_TYPE_EXPOSED_TO_HOST = 5,
+} __attribute__ ((packed));
+
+enum MR_PD_STATE {
+ MR_PD_STATE_UNCONFIGURED_GOOD = 0x00,
+ MR_PD_STATE_UNCONFIGURED_BAD = 0x01,
+ MR_PD_STATE_HOT_SPARE = 0x02,
+ MR_PD_STATE_OFFLINE = 0x10,
+ MR_PD_STATE_FAILED = 0x11,
+ MR_PD_STATE_REBUILD = 0x14,
+ MR_PD_STATE_ONLINE = 0x18,
+ MR_PD_STATE_COPYBACK = 0x20,
+ MR_PD_STATE_SYSTEM = 0x40,
};

/*
+ * defines the physical drive address structure
+ */
+struct MR_PD_ADDRESS {
+ u16 deviceId;
+ u16 enclDeviceId;
+
+ union {
+ struct {
+ u8 enclIndex;
+ u8 slotNumber;
+ } mrPdAddress;
+ struct {
+ u8 enclPosition;
+ u8 enclConnectorIndex;
+ } mrEnclAddress;
+ };
+ u8 scsiDevType;
+ union {
+ u8 connectedPortBitmap;
+ u8 connectedPortNumbers;
+ };
+ u64 sasAddr[2];
+} __attribute__ ((packed));
+
+/*
+ * defines the physical drive list structure
+ */
+struct MR_PD_LIST {
+ u32 size;
+ u32 count;
+ struct MR_PD_ADDRESS addr[1];
+} __attribute__ ((packed));
+
+struct megasas_pd_list {
+ u16 tid;
+ u8 driveType;
+ u8 driveState;
+} __attribute__ ((packed));
+
+/*
* SAS controller properties
*/
struct megasas_ctrl_prop {
@@ -553,6 +633,8 @@ struct megasas_ctrl_info {
#define MEGASAS_DEFAULT_INIT_ID -1
#define MEGASAS_MAX_LUN 8
#define MEGASAS_MAX_LD 64
+#define MEGASAS_MAX_PD (MEGASAS_MAX_PD_CHANNELS * \
+ MEGASAS_MAX_DEV_PER_CHANNEL)

#define MEGASAS_DBG_LVL 1

@@ -1104,6 +1186,7 @@ struct megasas_instance {

unsigned long base_addr;
struct megasas_register_set __iomem *reg_set;
+ struct megasas_pd_list pd_list[MEGASAS_MAX_PD];

s8 init_id;


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