patch-2.4.0-test2 linux/arch/sh/kernel/cf-enabler.c

• Lines: 96
• Date: Mon Jun 19 17:59:37 2000
• Orig file: v2.4.0-test1/linux/arch/sh/kernel/cf-enabler.c
• Orig date: Tue Mar 7 14:32:25 2000

diff -u --recursive --new-file v2.4.0-test1/linux/arch/sh/kernel/cf-enabler.c linux/arch/sh/kernel/cf-enabler.c
@@ -1,19 +1,81 @@
-/* $Id: cf-enabler.c,v 1.2 1999/12/20 10:14:40 gniibe Exp $
+/* $Id: cf-enabler.c,v 1.2 2000/06/08 05:50:10 gniibe Exp $
  *
  *  linux/drivers/block/cf-enabler.c
  *
  *  Copyright (C) 1999  Niibe Yutaka
+ *  Copyright (C) 2000  Toshiharu Nozawa
  *
  *  Enable the CF configuration.
  */
 
+#include <linux/config.h>
 #include <linux/init.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
 
+#ifdef CONFIG_SH_SOLUTION_ENGINE
+#include <asm/hitachi_se.h>
+/*
+ * 0xB8400000 : Common Memory
+ * 0xB8500000 : Attribute
+ * 0xB8600000 : I/O
+ */
+
+int __init cf_init(void)
+{
+	if ((ctrl_inw(MRSHPC_CSR) & 0x000c) != 0)
+		return 0;	/* Not detected */
+
+	if ((ctrl_inw(MRSHPC_CSR) & 0x0080) == 0) {
+		ctrl_outw(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
+	} else {
+		ctrl_outw(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
+	}
+
+	/*
+	 *  PC-Card window open 
+	 *  flag == COMMON/ATTRIBUTE/IO
+	 */
+	/* common window open */
+	ctrl_outw(0x8a84, MRSHPC_MW0CR1);/* window 0xb8400000 */
+	if((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
+		/* common mode & bus width 16bit SWAP = 1*/
+		ctrl_outw(0x0b00, MRSHPC_MW0CR2);
+	else
+		/* common mode & bus width 16bit SWAP = 0*/
+		ctrl_outw(0x0300, MRSHPC_MW0CR2); 
+
+	/* attribute window open */
+	ctrl_outw(0x8a85, MRSHPC_MW1CR1);/* window 0xb8500000 */
+	if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
+		/* attribute mode & bus width 16bit SWAP = 1*/
+		ctrl_outw(0x0a00, MRSHPC_MW1CR2);
+	else
+		/* attribute mode & bus width 16bit SWAP = 0*/
+		ctrl_outw(0x0200, MRSHPC_MW1CR2);
+
+	/* I/O window open */
+	ctrl_outw(0x8a86, MRSHPC_IOWCR1);/* I/O window 0xb8600000 */
+	ctrl_outw(0x0008, MRSHPC_CDCR);	 /* I/O card mode */
+	if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
+		ctrl_outw(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
+	else
+		ctrl_outw(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
+
+	ctrl_outw(0x2000, MRSHPC_ICR);
+	ctrl_outb(0x00, PA_MRSHPC_MW2 + 0x206);
+	ctrl_outb(0x42, PA_MRSHPC_MW2 + 0x200);
+	return 0;
+}
+#else /* then generic system type */
 #define CF_CIS_BASE	0xb8000000
 /*
+ * You can connect Compact Flash directly to the bus of SuperH.
+ * This is the enabler for that.
+ */
+
+/*
  * 0xB8000000 : Attribute
  * 0xB8001000 : Common Memory
  * 0xBA000000 : I/O
@@ -21,10 +83,12 @@
 
 int __init cf_init(void)
 {
+	/* Enable the card, and set the level interrupt */
 	outw(0x0042, CF_CIS_BASE+0x0200);
 	make_imask_irq(14);
 	disable_irq(14);
 	return 0;
 }
+#endif
 
 __initcall (cf_init);