[SCSI] stex: add new device (id 0x8650) support

A new device (id 0x8650, nickname 'yosemite') support is added.
It's basically the same, except for following items:
- mapping of id and lun by firmware
- special handling for some commands in interrupt routine
- change of internal copy function for these special commands
- different reset handling code
- different shutdown notification command

Signed-off-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 164 insertions, 30 deletions

diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index cfb29716b5e2..a54e6c1026b7 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -11,7 +11,7 @@
  *      Written By:
  *              Ed Lin <promise_linux@promise.com>
  *
- *      Version: 2.9.0.13
+ *      Version: 3.0.0.1
  *
  */
 
@@ -37,11 +37,11 @@
 #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];
@@ -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
@@ -594,8 +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);
@@ -679,7 +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)
@@ -701,8 +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;
         }
@@ -722,6 +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;
                 }
 
@@ -740,9 +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--;
@@ -947,6 +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;
@@ -954,20 +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;
         }
-        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);
 
+        /* 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);
+        }
+
+        hba->mu_status = MU_STATE_STARTED;
         return SUCCESS;
 }
 
@@ -1155,9 +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;
@@ -1221,6 +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);