Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
[pandora-kernel.git] / drivers / scsi / stex.c
index 3cf3106..185c270 100644 (file)
@@ -11,7 +11,7 @@
  *     Written By:
  *             Ed Lin <promise_linux@promise.com>
  *
- *     Version: 2.9.0.13
+ *     Version: 3.0.0.1
  *
  */
 
 #include <scsi/scsi_tcq.h>
 
 #define DRV_NAME "stex"
-#define ST_DRIVER_VERSION "2.9.0.13"
-#define ST_VER_MAJOR           2
-#define ST_VER_MINOR           9
+#define ST_DRIVER_VERSION "3.0.0.1"
+#define ST_VER_MAJOR           3
+#define ST_VER_MINOR           0
 #define ST_OEM                         0
-#define ST_BUILD_VER           13
+#define ST_BUILD_VER           1
 
 enum {
        /* MU register offset */
@@ -120,12 +120,18 @@ enum {
 
        st_shasta                               = 0,
        st_vsc                                  = 1,
+       st_yosemite                             = 2,
 
        PASSTHRU_REQ_TYPE                       = 0x00000001,
        PASSTHRU_REQ_NO_WAKEUP                  = 0x00000100,
        ST_INTERNAL_TIMEOUT                     = 30,
 
+       ST_TO_CMD                               = 0,
+       ST_FROM_CMD                             = 1,
+
        /* vendor specific commands of Promise */
+       MGT_CMD                                 = 0xd8,
+       SINBAND_MGT_CMD                         = 0xd9,
        ARRAY_CMD                               = 0xe0,
        CONTROLLER_CMD                          = 0xe1,
        DEBUGGING_CMD                           = 0xe2,
@@ -133,14 +139,48 @@ enum {
 
        PASSTHRU_GET_ADAPTER                    = 0x05,
        PASSTHRU_GET_DRVVER                     = 0x10,
+
+       CTLR_CONFIG_CMD                         = 0x03,
+       CTLR_SHUTDOWN                           = 0x0d,
+
        CTLR_POWER_STATE_CHANGE                 = 0x0e,
        CTLR_POWER_SAVING                       = 0x01,
 
        PASSTHRU_SIGNATURE                      = 0x4e415041,
+       MGT_CMD_SIGNATURE                       = 0xba,
 
        INQUIRY_EVPD                            = 0x01,
 };
 
+/* SCSI inquiry data */
+typedef struct st_inq {
+       u8 DeviceType                   :5;
+       u8 DeviceTypeQualifier          :3;
+       u8 DeviceTypeModifier           :7;
+       u8 RemovableMedia               :1;
+       u8 Versions;
+       u8 ResponseDataFormat           :4;
+       u8 HiSupport                    :1;
+       u8 NormACA                      :1;
+       u8 ReservedBit                  :1;
+       u8 AERC                         :1;
+       u8 AdditionalLength;
+       u8 Reserved[2];
+       u8 SoftReset                    :1;
+       u8 CommandQueue                 :1;
+       u8 Reserved2                    :1;
+       u8 LinkedCommands               :1;
+       u8 Synchronous                  :1;
+       u8 Wide16Bit                    :1;
+       u8 Wide32Bit                    :1;
+       u8 RelativeAddressing           :1;
+       u8 VendorId[8];
+       u8 ProductId[16];
+       u8 ProductRevisionLevel[4];
+       u8 VendorSpecific[20];
+       u8 Reserved3[40];
+} ST_INQ;
+
 struct st_sgitem {
        u8 ctrl;        /* SG_CF_xxx */
        u8 reserved[3];
@@ -181,7 +221,7 @@ struct req_msg {
        u8 task_attr;
        u8 task_manage;
        u8 prd_entry;
-       u8 payload_sz;          /* payload size in 4-byte */
+       u8 payload_sz;          /* payload size in 4-byte, not used */
        u8 cdb[STEX_CDB_LENGTH];
        u8 variable[REQ_VARIABLE_LEN];
 };
@@ -242,7 +282,8 @@ struct st_drvver {
 #define MU_REQ_BUFFER_SIZE     (MU_REQ_COUNT * sizeof(struct req_msg))
 #define MU_STATUS_BUFFER_SIZE  (MU_STATUS_COUNT * sizeof(struct status_msg))
 #define MU_BUFFER_SIZE         (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
-#define STEX_BUFFER_SIZE       (MU_BUFFER_SIZE + sizeof(struct st_frame))
+#define STEX_EXTRA_SIZE                max(sizeof(struct st_frame), sizeof(ST_INQ))
+#define STEX_BUFFER_SIZE       (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
 
 struct st_ccb {
        struct req_msg *req;
@@ -403,7 +444,7 @@ static int stex_map_sg(struct st_hba *hba,
 }
 
 static void stex_internal_copy(struct scsi_cmnd *cmd,
-       const void *src, size_t *count, int sg_count)
+       const void *src, size_t *count, int sg_count, int direction)
 {
        size_t lcount;
        size_t len;
@@ -427,7 +468,10 @@ static void stex_internal_copy(struct scsi_cmnd *cmd,
                } else
                        d = cmd->request_buffer;
 
-               memcpy(d, s, len);
+               if (direction == ST_TO_CMD)
+                       memcpy(d, s, len);
+               else
+                       memcpy(s, d, len);
 
                lcount -= len;
                if (cmd->use_sg)
@@ -449,7 +493,7 @@ static int stex_direct_copy(struct scsi_cmnd *cmd,
                        return 0;
        }
 
-       stex_internal_copy(cmd, src, &cp_len, n_elem);
+       stex_internal_copy(cmd, src, &cp_len, n_elem, ST_TO_CMD);
 
        if (cmd->use_sg)
                pci_unmap_sg(hba->pdev, cmd->request_buffer,
@@ -480,7 +524,7 @@ static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
        p->subid =
                hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
 
-       stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count);
+       stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count, ST_TO_CMD);
 }
 
 static void
@@ -489,7 +533,6 @@ stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
        req->tag = cpu_to_le16(tag);
        req->task_attr = TASK_ATTRIBUTE_SIMPLE;
        req->task_manage = 0; /* not supported yet */
-       req->payload_sz = (u8)(sizeof(struct req_msg)/sizeof(u32));
 
        hba->ccb[tag].req = req;
        hba->out_req_cnt++;
@@ -595,8 +638,14 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
                return SCSI_MLQUEUE_HOST_BUSY;
 
        req = stex_alloc_req(hba);
-       req->lun = lun;
-       req->target = id;
+
+       if (hba->cardtype == st_yosemite) {
+               req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
+               req->target = 0;
+       } else {
+               req->lun = lun;
+               req->target = id;
+       }
 
        /* cdb */
        memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
@@ -680,7 +729,51 @@ static void stex_copy_data(struct st_ccb *ccb,
 
        if (ccb->cmd == NULL)
                return;
-       stex_internal_copy(ccb->cmd, resp->variable, &count, ccb->sg_count);
+       stex_internal_copy(ccb->cmd,
+               resp->variable, &count, ccb->sg_count, ST_TO_CMD);
+}
+
+static void stex_ys_commands(struct st_hba *hba,
+       struct st_ccb *ccb, struct status_msg *resp)
+{
+       size_t count;
+
+       if (ccb->cmd->cmnd[0] == MGT_CMD &&
+               resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
+               ccb->cmd->request_bufflen =
+                       le32_to_cpu(*(__le32 *)&resp->variable[0]);
+               return;
+       }
+
+       if (resp->srb_status != 0)
+               return;
+
+       /* determine inquiry command status by DeviceTypeQualifier */
+       if (ccb->cmd->cmnd[0] == INQUIRY &&
+               resp->scsi_status == SAM_STAT_GOOD) {
+               ST_INQ *inq_data;
+
+               count = STEX_EXTRA_SIZE;
+               stex_internal_copy(ccb->cmd, hba->copy_buffer,
+                       &count, ccb->sg_count, ST_FROM_CMD);
+               inq_data = (ST_INQ *)hba->copy_buffer;
+               if (inq_data->DeviceTypeQualifier != 0)
+                       ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
+               else
+                       ccb->srb_status = SRB_STATUS_SUCCESS;
+       } else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
+               u8 *report_lun_data = (u8 *)hba->copy_buffer;
+
+               count = STEX_EXTRA_SIZE;
+               stex_internal_copy(ccb->cmd, report_lun_data,
+                       &count, ccb->sg_count, ST_FROM_CMD);
+               if (report_lun_data[2] || report_lun_data[3]) {
+                       report_lun_data[2] = 0x00;
+                       report_lun_data[3] = 0x08;
+                       stex_internal_copy(ccb->cmd, report_lun_data,
+                               &count, ccb->sg_count, ST_TO_CMD);
+               }
+       }
 }
 
 static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
@@ -702,8 +795,17 @@ static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
                return;
        }
 
-       if (unlikely(hba->mu_status != MU_STATE_STARTED ||
-               hba->out_req_cnt <= 0)) {
+       /*
+        * it's not a valid status payload if:
+        * 1. there are no pending requests(e.g. during init stage)
+        * 2. there are some pending requests, but the controller is in
+        *     reset status, and its type is not st_yosemite
+        * firmware of st_yosemite in reset status will return pending requests
+        * to driver, so we allow it to pass
+        */
+       if (unlikely(hba->out_req_cnt <= 0 ||
+                       (hba->mu_status == MU_STATE_RESETTING &&
+                        hba->cardtype != st_yosemite))) {
                hba->status_tail = hba->status_head;
                goto update_status;
        }
@@ -723,6 +825,7 @@ static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
                if (unlikely(ccb->req == NULL)) {
                        printk(KERN_WARNING DRV_NAME
                                "(%s): lagging req\n", pci_name(hba->pdev));
+                       hba->out_req_cnt--;
                        continue;
                }
 
@@ -741,9 +844,13 @@ static void stex_mu_intr(struct st_hba *hba, u32 doorbell)
                ccb->scsi_status = resp->scsi_status;
 
                if (likely(ccb->cmd != NULL)) {
+                       if (hba->cardtype == st_yosemite)
+                               stex_ys_commands(hba, ccb, resp);
+
                        if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
                                ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
                                stex_controller_info(hba, ccb);
+
                        stex_unmap_sg(hba, ccb->cmd);
                        stex_scsi_done(ccb);
                        hba->out_req_cnt--;
@@ -764,7 +871,7 @@ update_status:
        readl(base + IMR1); /* flush */
 }
 
-static irqreturn_t stex_intr(int irq, void *__hba, struct pt_regs *regs)
+static irqreturn_t stex_intr(int irq, void *__hba)
 {
        struct st_hba *hba = __hba;
        void __iomem *base = hba->mmio_base;
@@ -948,6 +1055,7 @@ static int stex_reset(struct scsi_cmnd *cmd)
 {
        struct st_hba *hba;
        unsigned long flags;
+       unsigned long before;
        hba = (struct st_hba *) &cmd->device->host->hostdata[0];
 
        hba->mu_status = MU_STATE_RESETTING;
@@ -955,20 +1063,37 @@ static int stex_reset(struct scsi_cmnd *cmd)
        if (hba->cardtype == st_shasta)
                stex_hard_reset(hba);
 
-       if (stex_handshake(hba)) {
-               printk(KERN_WARNING DRV_NAME
-                       "(%s): resetting: handshake failed\n",
-                       pci_name(hba->pdev));
-               return FAILED;
+       if (hba->cardtype != st_yosemite) {
+               if (stex_handshake(hba)) {
+                       printk(KERN_WARNING DRV_NAME
+                               "(%s): resetting: handshake failed\n",
+                               pci_name(hba->pdev));
+                       return FAILED;
+               }
+               spin_lock_irqsave(hba->host->host_lock, flags);
+               hba->req_head = 0;
+               hba->req_tail = 0;
+               hba->status_head = 0;
+               hba->status_tail = 0;
+               hba->out_req_cnt = 0;
+               spin_unlock_irqrestore(hba->host->host_lock, flags);
+               return SUCCESS;
+       }
+
+       /* st_yosemite */
+       writel(MU_INBOUND_DOORBELL_RESET, hba->mmio_base + IDBL);
+       readl(hba->mmio_base + IDBL); /* flush */
+       before = jiffies;
+       while (hba->out_req_cnt > 0) {
+               if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) {
+                       printk(KERN_WARNING DRV_NAME
+                               "(%s): reset timeout\n", pci_name(hba->pdev));
+                       return FAILED;
+               }
+               msleep(1);
        }
-       spin_lock_irqsave(hba->host->host_lock, flags);
-       hba->req_head = 0;
-       hba->req_tail = 0;
-       hba->status_head = 0;
-       hba->status_tail = 0;
-       hba->out_req_cnt = 0;
-       spin_unlock_irqrestore(hba->host->host_lock, flags);
 
+       hba->mu_status = MU_STATE_STARTED;
        return SUCCESS;
 }
 
@@ -1156,9 +1281,16 @@ static void stex_hba_stop(struct st_hba *hba)
        req = stex_alloc_req(hba);
        memset(req->cdb, 0, STEX_CDB_LENGTH);
 
-       req->cdb[0] = CONTROLLER_CMD;
-       req->cdb[1] = CTLR_POWER_STATE_CHANGE;
-       req->cdb[2] = CTLR_POWER_SAVING;
+       if (hba->cardtype == st_yosemite) {
+               req->cdb[0] = MGT_CMD;
+               req->cdb[1] = MGT_CMD_SIGNATURE;
+               req->cdb[2] = CTLR_CONFIG_CMD;
+               req->cdb[3] = CTLR_SHUTDOWN;
+       } else {
+               req->cdb[0] = CONTROLLER_CMD;
+               req->cdb[1] = CTLR_POWER_STATE_CHANGE;
+               req->cdb[2] = CTLR_POWER_SAVING;
+       }
 
        hba->ccb[tag].cmd = NULL;
        hba->ccb[tag].sg_count = 0;
@@ -1222,6 +1354,7 @@ static struct pci_device_id stex_pci_tbl[] = {
        { 0x105a, 0x8301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
        { 0x105a, 0x8302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
        { 0x1725, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
+       { 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yosemite },
        { }     /* terminate list */
 };
 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);