[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>

1 files changed, 26 insertions, 13 deletions

diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index d242e26..00e3cba 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