block: unify request timeout handling

[mirror_ubuntu-artful-kernel.git] / drivers / scsi / megaraid / megaraid_sas.c

diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index fc7ac158476c5d4bc94ecf08a46f1c8604c032ae..afe1de99876319ba40d7c28a884458a3bff1b91e 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -10,7 +10,7 @@
  *        2 of the License, or (at your option) any later version.
  *
  * FILE                : megaraid_sas.c
- * Version     : v00.00.03.20-rc1
+ * Version     : v00.00.04.01-rc1
  *
  * Authors:
  *     (email-id : megaraidlinux@lsi.com)
@@ -71,6 +71,10 @@ static struct pci_device_id megasas_pci_table[] = {
        /* ppc IOP */
        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
        /* ppc IOP */
+       {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
+       /* 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_VERDE_ZCR)},
        /* xscale IOP, vega */
        {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
@@ -198,6 +202,9 @@ megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
         */
        writel(status, &regs->outbound_intr_status);
 
+       /* Dummy readl to force pci flush */
+       readl(&regs->outbound_intr_status);
+
        return 0;
 }
 
@@ -293,6 +300,9 @@ megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
         */
        writel(status, &regs->outbound_doorbell_clear);
 
+       /* Dummy readl to force pci flush */
+       readl(&regs->outbound_doorbell_clear);
+
        return 0;
 }
 /**
@@ -317,6 +327,99 @@ static struct megasas_instance_template megasas_instance_template_ppc = {
        .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 };
 
+/**
+*      The following functions are defined for gen2 (deviceid : 0x78 0x79)
+*      controllers
+*/
+
+/**
+ * megasas_enable_intr_gen2 -  Enables interrupts
+ * @regs:                      MFI register set
+ */
+static inline void
+megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
+{
+       writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
+
+       /* write ~0x00000005 (4 & 1) to the intr mask*/
+       writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
+
+       /* Dummy readl to force pci flush */
+       readl(&regs->outbound_intr_mask);
+}
+
+/**
+ * megasas_disable_intr_gen2 - Disables interrupt
+ * @regs:                      MFI register set
+ */
+static inline void
+megasas_disable_intr_gen2(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_gen2 - returns the current FW status value
+ * @regs:                      MFI register set
+ */
+static u32
+megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
+{
+       return readl(&(regs)->outbound_scratch_pad);
+}
+
+/**
+ * megasas_clear_interrupt_gen2 -      Check & clear interrupt
+ * @regs:                              MFI register set
+ */
+static int
+megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
+{
+       u32 status;
+       /*
+        * Check if it is our interrupt
+        */
+       status = readl(&regs->outbound_intr_status);
+
+       if (!(status & MFI_GEN2_ENABLE_INTERRUPT_MASK))
+               return 1;
+
+       /*
+        * Clear the interrupt by writing back the same value
+        */
+       writel(status, &regs->outbound_doorbell_clear);
+
+       /* Dummy readl to force pci flush */
+       readl(&regs->outbound_intr_status);
+
+       return 0;
+}
+/**
+ * megasas_fire_cmd_gen2 -     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_gen2(dma_addr_t frame_phys_addr, u32 frame_count,
+                       struct megasas_register_set __iomem *regs)
+{
+       writel((frame_phys_addr | (frame_count<<1))|1,
+                       &(regs)->inbound_queue_port);
+}
+
+static struct megasas_instance_template megasas_instance_template_gen2 = {
+
+       .fire_cmd = megasas_fire_cmd_gen2,
+       .enable_intr = megasas_enable_intr_gen2,
+       .disable_intr = megasas_disable_intr_gen2,
+       .clear_intr = megasas_clear_intr_gen2,
+       .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
+};
+
 /**
 *      This is the end of set of functions & definitions
 *      specific to ppc (deviceid : 0x60) controllers
@@ -1064,7 +1167,7 @@ static int megasas_generic_reset(struct scsi_cmnd *scmd)
  * cmd has not been completed within the timeout period.
  */
 static enum
-scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
+blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
 {
        struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
        struct megasas_instance *instance;
@@ -1072,7 +1175,7 @@ scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
 
        if (time_after(jiffies, scmd->jiffies_at_alloc +
                                (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
-               return EH_NOT_HANDLED;
+               return BLK_EH_NOT_HANDLED;
        }
 
        instance = cmd->instance;
@@ -1086,7 +1189,7 @@ scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
 
                spin_unlock_irqrestore(instance->host->host_lock, flags);
        }
-       return EH_RESET_TIMER;
+       return BLK_EH_RESET_TIMER;
 }
 
 /**
@@ -1976,7 +2079,12 @@ static int megasas_init_mfi(struct megasas_instance *instance)
        /*
         * Map the message registers
         */
-       instance->base_addr = pci_resource_start(instance->pdev, 0);
+       if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
+               (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) {
+               instance->base_addr = pci_resource_start(instance->pdev, 1);
+       } else {
+               instance->base_addr = pci_resource_start(instance->pdev, 0);
+       }
 
        if (pci_request_regions(instance->pdev, "megasas: LSI")) {
                printk(KERN_DEBUG "megasas: IO memory region busy!\n");
@@ -1998,6 +2106,10 @@ static int megasas_init_mfi(struct megasas_instance *instance)
                case PCI_DEVICE_ID_LSI_SAS1078DE:
                        instance->instancet = &megasas_instance_template_ppc;
                        break;
+               case PCI_DEVICE_ID_LSI_SAS1078GEN2:
+               case PCI_DEVICE_ID_LSI_SAS0079GEN2:
+                       instance->instancet = &megasas_instance_template_gen2;
+                       break;
                case PCI_DEVICE_ID_LSI_SAS1064R:
                case PCI_DEVICE_ID_DELL_PERC5:
                default:
@@ -2857,6 +2969,7 @@ static void megasas_shutdown(struct pci_dev *pdev)
 {
        struct megasas_instance *instance = pci_get_drvdata(pdev);
        megasas_flush_cache(instance);
+       megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
 }
 
 /**
@@ -3292,7 +3405,7 @@ megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t coun
        return retval;
 }
 
-static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl,
+static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
                megasas_sysfs_set_dbg_lvl);
 
 static ssize_t