[SCSI] aacraid: add restart adapter platform function

Received from Mark Salyzyn,

This patch updates the adapter restart function to deal with some
adapters that have specific IOP reset needs. Since the code for
restarting the adapter was in two places, changed over to utilizing a
platform function in one place.

Signed-off-by: Mark Haverkamp <markh@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

3 files changed, 31 insertions, 25 deletions

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 39ecd0d22eb0..7e25c0bbd644 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -497,6 +497,7 @@ struct adapter_ops
         void (*adapter_enable_int)(struct aac_dev *dev);
         int  (*adapter_sync_cmd)(struct aac_dev *dev, u32 command, u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6, u32 *status, u32 *r1, u32 *r2, u32 *r3, u32 *r4);
         int  (*adapter_check_health)(struct aac_dev *dev);
+        int  (*adapter_restart)(struct aac_dev *dev, int bled);
         /* Transport operations */
         int  (*adapter_ioremap)(struct aac_dev * dev, u32 size);
         irqreturn_t (*adapter_intr)(int irq, void *dev_id);
@@ -1060,6 +1061,9 @@ struct aac_dev
 #define aac_adapter_check_health(dev) \
         (dev)->a_ops.adapter_check_health(dev)
 
+#define aac_adapter_restart(dev,bled) \
+        (dev)->a_ops.adapter_restart(dev,bled)
+
 #define aac_adapter_ioremap(dev, size) \
         (dev)->a_ops.adapter_ioremap(dev, size)
 
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 1b97f60652ba..55bf6f395e92 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1035,7 +1035,6 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
 static int _aac_reset_adapter(struct aac_dev *aac)
 {
         int index, quirks;
-        u32 ret;
         int retval;
         struct Scsi_Host *host;
         struct scsi_device *dev;
@@ -1059,20 +1058,10 @@ static int _aac_reset_adapter(struct aac_dev *aac)
          *      If a positive health, means in a known DEAD PANIC
          * state and the adapter could be reset to `try again'.
          */
-        retval = aac_adapter_check_health(aac);
-        if (retval == 0)
-                retval = aac_adapter_sync_cmd(aac, IOP_RESET_ALWAYS,
-                  0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
-        if (retval)
-                retval = aac_adapter_sync_cmd(aac, IOP_RESET,
-                  0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
+        retval = aac_adapter_restart(aac, aac_adapter_check_health(aac));
 
         if (retval)
                 goto out;
-        if (ret != 0x00000001) {
-                retval = -ENODEV;
-                goto out;
-        }
 
         /*
          *      Loop through the fibs, close the synchronous FIBS
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index d242e2611d67..00e3cba9d8ef 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -460,22 +460,31 @@ static int aac_rx_ioremap(struct aac_dev * dev, u32 size)
         return 0;
 }
 
-static int aac_rx_restart_adapter(struct aac_dev *dev)
+static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
 {
         u32 var;
 
-        printk(KERN_ERR "%s%d: adapter kernel panic'd.\n",
-                        dev->name, dev->id);
-
-        if (aac_rx_check_health(dev) <= 0)
-                return 1;
-        if (rx_sync_cmd(dev, IOP_RESET, 0, 0, 0, 0, 0, 0,
-                        &var, NULL, NULL, NULL, NULL))
-                return 1;
+        if (bled)
+                printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
+                        dev->name, dev->id, bled);
+        else
+                bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
+                  0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
+        if (bled)
+                bled = aac_adapter_sync_cmd(dev, IOP_RESET,
+                  0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
+
+        if (bled)
+                return -EINVAL;
+        if (var == 0x3803000F) { /* USE_OTHER_METHOD */
+                rx_writel(dev, MUnit.reserved2, 3);
+                msleep(5000); /* Delay 5 seconds */
+                var = 0x00000001;
+        }
         if (var != 0x00000001)
-                 return 1;
+                return -EINVAL;
         if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
-                return 1;
+                return -ENODEV;
         return 0;
 }
 
@@ -532,9 +541,12 @@ int _aac_rx_init(struct aac_dev *dev)
          *      Check to see if the board panic'd while booting.
          */
         status = rx_readl(dev, MUnit.OMRx[0]);
-        if (status & KERNEL_PANIC)
-                if (aac_rx_restart_adapter(dev))
+        if (status & KERNEL_PANIC) {
+                if ((status = aac_rx_check_health(dev)) <= 0)
                         goto error_iounmap;
+                if (aac_rx_restart_adapter(dev, status))
+                        goto error_iounmap;
+        }
         /*
          *      Check to see if the board failed any self tests.
          */
@@ -572,6 +584,7 @@ int _aac_rx_init(struct aac_dev *dev)
         dev->a_ops.adapter_notify = aac_rx_notify_adapter;
         dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
         dev->a_ops.adapter_check_health = aac_rx_check_health;
+        dev->a_ops.adapter_restart = aac_rx_restart_adapter;
 
         /*
          *      First clear out all interrupts.  Then enable the one's that we