scsi: ncr5380: Store IO ports and addresses in host private data

The various 5380 drivers inconsistently store register pointers
either in the Scsi_Host struct "legacy crap" area or in special,
board-specific members of the NCR5380_hostdata struct. Uniform
use of the latter struct makes for simpler and faster code (see
the following patches) and helps to reduce use of the
NCR5380_implementation_fields macro.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 11 insertions, 12 deletions

diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c
index a396024a3cae..1c4a44a1e62d 100644
--- a/drivers/scsi/arm/oak.c
+++ b/drivers/scsi/arm/oak.c
@@ -17,9 +17,9 @@
 #define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
 
 #define NCR5380_read(reg) \
-	readb(priv(instance)->base + ((reg) << 2))
+	readb(priv(instance)->io + ((reg) << 2))
 #define NCR5380_write(reg, value) \
-	writeb(value, priv(instance)->base + ((reg) << 2))
+	writeb(value, priv(instance)->io + ((reg) << 2))
 
 #define NCR5380_dma_xfer_len(instance, cmd, phase)	(0)
 #define NCR5380_dma_recv_setup		oakscsi_pread
@@ -29,8 +29,7 @@
 #define NCR5380_queue_command		oakscsi_queue_command
 #define NCR5380_info			oakscsi_info
 
-#define NCR5380_implementation_fields	\
-	void __iomem *base
+#define NCR5380_implementation_fields	/* none */
 
 #include "../NCR5380.h"
 
@@ -43,7 +42,7 @@
 static inline int oakscsi_pwrite(struct Scsi_Host *instance,
                                  unsigned char *addr, int len)
 {
-  void __iomem *base = priv(instance)->base;
+  u8 __iomem *base = priv(instance)->io;
 
 printk("writing %p len %d\n",addr, len);
 
@@ -58,7 +57,7 @@ printk("writing %p len %d\n",addr, len);
 static inline int oakscsi_pread(struct Scsi_Host *instance,
                                 unsigned char *addr, int len)
 {
-  void __iomem *base = priv(instance)->base;
+  u8 __iomem *base = priv(instance)->io;
 printk("reading %p len %d\n", addr, len);
   while(len > 0)
   {
@@ -133,15 +132,14 @@ static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 		goto release;
 	}
 
-	priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-				   ecard_resource_len(ec, ECARD_RES_MEMC));
-	if (!priv(host)->base) {
+	priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
+	                         ecard_resource_len(ec, ECARD_RES_MEMC));
+	if (!priv(host)->io) {
 		ret = -ENOMEM;
 		goto unreg;
 	}
 
 	host->irq = NO_IRQ;
-	host->n_io_port = 255;
 
 	ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
 	if (ret)
@@ -159,7 +157,7 @@ static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
  out_exit:
 	NCR5380_exit(host);
  out_unmap:
-	iounmap(priv(host)->base);
+	iounmap(priv(host)->io);
  unreg:
 	scsi_host_put(host);
  release:
@@ -171,13 +169,14 @@ static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
 static void oakscsi_remove(struct expansion_card *ec)
 {
 	struct Scsi_Host *host = ecard_get_drvdata(ec);
+	void __iomem *base = priv(host)->io;
 
 	ecard_set_drvdata(ec, NULL);
 	scsi_remove_host(host);
 
 	NCR5380_exit(host);
-	iounmap(priv(host)->base);
 	scsi_host_put(host);
+	iounmap(base);
 	ecard_release_resources(ec);
 }