[PATCH] make drivers/scsi/seagate.c use ioremap instead of isa_{read,write} (241p11)

[Rasmus Andersen <rasmus@jaquet.dk>]

Hi.

(I have not been able to find a probable current maintainer for
this code.)

The following patch makes drivers/scsi/seagate.c use ioremap
instead of isa_{read, write}.

It applies against ac12 and 241p11.

Please comment, esp. on the size of the remappings.


--- linux-ac12-clean/drivers/scsi/seagate.c	Sun Nov 12 04:01:11 2000
+++ linux-ac12/drivers/scsi/seagate.c	Sun Jan 28 21:52:39 2001
@@ -256,10 +256,31 @@
 MODULE_PARM(irq, "i");
 
 #define retcode(result) (((result) << 16) | (message << 8) | status)
-#define STATUS ((u8) isa_readb(st0x_cr_sr))
-#define DATA ((u8) isa_readb(st0x_dr))
-#define WRITE_CONTROL(d) { isa_writeb((d), st0x_cr_sr); }
-#define WRITE_DATA(d) { isa_writeb((d), st0x_dr); }
+#define STATUS ((u8) read_data(st0x_cr_sr))
+#define DATA ((u8) read_data(st0x_dr))
+#define WRITE_CONTROL(d) write_data(d, st0x_cr_sr)
+#define WRITE_DATA(d) write_data(d, st0x_dr)
+
+static inline u8 read_data(unsigned long offset) {
+	void *ptr = ioremap(offset, sizeof(u8));
+	u8 ret;
+	
+	if (!ptr)
+		return 1;
+	ret = readb(ptr);
+	iounmap(ptr);
+	return ret;
+}
+
+static inline int write_data(int data, unsigned long offset) {
+	void *ptr = ioremap(offset, sizeof(u8));
+	
+	if (!ptr)
+		return 1;
+	writeb(data, ptr);
+	iounmap(ptr);
+	return 0;
+}
 
 void st0x_setup (char *str, int *ints)
 {

-- 
Regards,
        Rasmus(rasmus@jaquet.dk)

I've never had major knee surgery on any other part of my body.
-Winston Bennett, University of Kentucky basketball forward
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