[SCSI] aacraid: merge rx and rkt code

Received from Mark Salyzyn:

The only real difference between the rkt and rx platform modules is the
offset of the message registers. This patch recognizes this similarity
and simplifies the driver to reduce it's code footprint and to improve
maintainability by reducing the code duplication.

Visibly, the 'rkt.c' portion of this patch looks more complicated than
it really is. View it as retaining the rkt-only specifics of the
interface.

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

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/scsi/aacraid/sa.c b/drivers/scsi/aacraid/sa.c
index cd586cc8f9be..f906ead239dd 100644
--- a/drivers/scsi/aacraid/sa.c
+++ b/drivers/scsi/aacraid/sa.c
@@ -281,6 +281,21 @@ static int aac_sa_check_health(struct aac_dev *dev)
 }
 
 /**
+ *	aac_sa_ioremap
+ *	@size: mapping resize request
+ *
+ */
+static int aac_sa_ioremap(struct aac_dev * dev, u32 size)
+{
+	if (!size) {
+		iounmap(dev->regs.sa);
+		return 0;
+	}
+	dev->base = dev->regs.sa = ioremap(dev->scsi_host_ptr->base, size);
+	return (dev->base == NULL) ? -1 : 0;
+}
+
+/**
  *	aac_sa_init	-	initialize an ARM based AAC card
  *	@dev: device to configure
  *
@@ -299,6 +314,11 @@ int aac_sa_init(struct aac_dev *dev)
 	instance = dev->id;
 	name     = dev->name;
 
+	if (aac_sa_ioremap(dev, dev->base_size)) {
+		printk(KERN_WARNING "%s: unable to map adapter.\n", name);
+		goto error_iounmap;
+	}
+
 	/*
 	 *	Check to see if the board failed any self tests.
 	 */
@@ -341,6 +361,7 @@ int aac_sa_init(struct aac_dev *dev)
 	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
 	dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
 	dev->a_ops.adapter_check_health = aac_sa_check_health;
+	dev->a_ops.adapter_ioremap = aac_sa_ioremap;
 
 	/*
 	 *	First clear out all interrupts.  Then enable the one's that