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Subject[PATCH] PC-9800 subarch. support for 2.5.64-ac3 (4/20) misc core
This is the patch to support NEC PC-9800 subarchitecture
against 2.5.64-ac3. (4/20)

Small patches for PC98 core support.
io.h: Using ioport 0x5f to wait is recomended by vendor.
irq.h: Cascade IRQ is 7 for PC98 not 2.
pc98*.h: Add macros to access BIOS parameters.
kernel.h: define "pc98" for other files.
I think these are small and clean.

Regards,
Osamu Tomita

diff -Nru linux/include/asm-i386/io.h linux98/include/asm-i386/io.h
--- linux/include/asm-i386/io.h 2002-10-12 13:22:45.000000000 +0900
+++ linux98/include/asm-i386/io.h 2002-10-12 19:25:19.000000000 +0900
@@ -27,6 +27,8 @@
* Linus
*/

+#include <linux/config.h>
+
/*
* Bit simplified and optimized by Jan Hubicka
* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999.
@@ -288,7 +290,11 @@
#ifdef SLOW_IO_BY_JUMPING
#define __SLOW_DOWN_IO "jmp 1f; 1: jmp 1f; 1:"
#else
+#ifdef CONFIG_X86_PC9800
+#define __SLOW_DOWN_IO "outb %%al,$0x5f;"
+#else
#define __SLOW_DOWN_IO "outb %%al,$0x80;"
+#endif
#endif

static inline void slow_down_io(void) {
diff -Nru linux/include/asm-i386/irq.h linux98/include/asm-i386/irq.h
--- linux/include/asm-i386/irq.h 2002-09-21 00:20:16.000000000 +0900
+++ linux98/include/asm-i386/irq.h 2002-09-21 07:17:56.000000000 +0900
@@ -17,7 +17,11 @@

static __inline__ int irq_cannonicalize(int irq)
{
+#ifdef CONFIG_X86_PC9800
+ return ((irq == 7) ? 11 : irq);
+#else
return ((irq == 2) ? 9 : irq);
+#endif
}

extern void disable_irq(unsigned int);
diff -Nru linux/include/asm-i386/pc9800.h linux98/include/asm-i386/pc9800.h
--- linux/include/asm-i386/pc9800.h 1970-01-01 09:00:00.000000000 +0900
+++ linux98/include/asm-i386/pc9800.h 2002-08-17 21:50:18.000000000 +0900
@@ -0,0 +1,27 @@
+/*
+ * PC-9800 machine types.
+ *
+ * Copyright (C) 1999 TAKAI Kosuke <tak@kmc.kyoto-u.ac.jp>
+ * (Linux/98 Project)
+ */
+
+#ifndef _ASM_PC9800_H_
+#define _ASM_PC9800_H_
+
+#include <asm/pc9800_sca.h>
+#include <asm/types.h>
+
+#define __PC9800SCA(type, pa) (*(type *) phys_to_virt(pa))
+#define __PC9800SCA_TEST_BIT(pa, n) \
+ ((__PC9800SCA(u8, pa) & (1U << (n))) != 0)
+
+#define PC9800_HIGHRESO_P() __PC9800SCA_TEST_BIT(PC9800SCA_BIOS_FLAG, 3)
+#define PC9800_8MHz_P() __PC9800SCA_TEST_BIT(PC9800SCA_BIOS_FLAG, 7)
+
+ /* 0x2198 is 98 21 on memory... */
+#define PC9800_9821_P() (__PC9800SCA(u16, PC9821SCA_ROM_ID) == 0x2198)
+
+/* Note PC9821_...() are valid only when PC9800_9821_P() was true. */
+#define PC9821_IDEIF_DOUBLE_P() __PC9800SCA_TEST_BIT(PC9821SCA_ROM_FLAG4, 4)
+
+#endif
diff -Nru linux/include/linux/kernel.h linux98/include/linux/kernel.h
--- linux/include/linux/kernel.h 2003-01-14 14:58:03.000000000 +0900
+++ linux98/include/linux/kernel.h 2003-01-14 23:11:42.000000000 +0900
@@ -224,4 +224,10 @@
#define __FUNCTION__ (__func__)
#endif

+#ifdef CONFIG_X86_PC9800
+#define pc98 1
+#else
+#define pc98 0
+#endif
+
#endif
-
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