h8300 generic irq

h8300 using generic irq handler patch.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 13 insertions, 97 deletions

diff --git a/arch/h8300/platform/h8300h/Makefile b/arch/h8300/platform/h8300h/Makefile
index 5d42c77..b24ea08 100644
--- a/arch/h8300/platform/h8300h/Makefile
+++ b/arch/h8300/platform/h8300h/Makefile
@@ -4,4 +4,4 @@
 # Reuse any files we can from the H8/300H
 #
 
-obj-y := entry.o ints_h8300h.o ptrace_h8300h.o
+obj-y := entry.o irq_pin.o ptrace_h8300h.o
diff --git a/arch/h8300/platform/h8300h/entry.S b/arch/h8300/platform/h8300h/entry.S
index d2dea24..f86ac3b 100644
--- a/arch/h8300/platform/h8300h/entry.S
+++ b/arch/h8300/platform/h8300h/entry.S
@@ -30,12 +30,12 @@
 	mov.l	er0,@-sp
 
 	stc	ccr,r0l				/* check kernel mode */
-	orc	#0x10,ccr
 	btst	#4,r0l
 	bne	5f
 
 	mov.l	sp,@SYMBOL_NAME(sw_usp)		/* user mode */
 	mov.l	@sp,er0
+	orc	#0x10,ccr
 	mov.l	@SYMBOL_NAME(sw_ksp),sp
 	sub.l	#(LRET-LORIG),sp		/* allocate LORIG - LRET */ 
 	mov.l	er0,@-sp
@@ -165,7 +165,7 @@ SYMBOL_NAME_LABEL(interrupt_entry)
 	dec.l	#1,er0
 	mov.l	sp,er1
 	subs	#4,er1				/* adjust ret_pc */
-	jsr	@SYMBOL_NAME(process_int)
+	jsr	@SYMBOL_NAME(do_IRQ)
 	mov.l	@SYMBOL_NAME(irq_stat)+CPUSTAT_SOFTIRQ_PENDING,er0
 	beq	1f
 	jsr	@SYMBOL_NAME(do_softirq)
diff --git a/arch/h8300/platform/h8300h/generic/Makefile b/arch/h8300/platform/h8300h/generic/Makefile
index b6ea768..32b964a 100644
--- a/arch/h8300/platform/h8300h/generic/Makefile
+++ b/arch/h8300/platform/h8300h/generic/Makefile
@@ -2,5 +2,5 @@
 # Makefile for the linux kernel.
 #
 
+extra-y :=  crt0_$(MODEL).o
 obj-y := timer.o
-extra-y =  crt0_$(MODEL).o
diff --git a/arch/h8300/platform/h8300h/ints_h8300h.c b/arch/h8300/platform/h8300h/ints_h8300h.c
deleted file mode 100644
index f177711..0000000
--- a/arch/h8300/platform/h8300h/ints_h8300h.c
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * linux/arch/h8300/platform/h8300h/ints_h8300h.c
- * Interrupt handling CPU variants
- *
- * Yoshinori Sato <ysato@users.sourceforge.jp>
- *
- */
-
-#include <linux/init.h>
-#include <linux/errno.h>
-
-#include <asm/ptrace.h>
-#include <asm/traps.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/gpio.h>
-#include <asm/regs306x.h>
-
-/* saved vector list */
-const int __initdata h8300_saved_vectors[]={
-#if defined(CONFIG_GDB_DEBUG)
-	TRAP3_VEC,
-#endif
-	-1
-};
-
-/* trap entry table */
-const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
-	0,0,0,0,0,0,0,0,
-	(unsigned long)system_call,  /* TRAPA #0 */
-	0,0,
-	(unsigned long)trace_break,  /* TRAPA #3 */
-};
-
-int h8300_enable_irq_pin(unsigned int irq)
-{
-	int bitmask;
-	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
-		return 0;
-
-	/* initialize IRQ pin */
-	bitmask = 1 << (irq - EXT_IRQ0);
-	switch(irq) {
-	case EXT_IRQ0:
-	case EXT_IRQ1:
-	case EXT_IRQ2:
-	case EXT_IRQ3:
-		if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
-			return -EBUSY;
-		H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
-		break;
-	case EXT_IRQ4:
-	case EXT_IRQ5:
-		if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
-			return -EBUSY;
-		H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
-		break;
-	}
-
-	return 0;
-}
-
-void h8300_disable_irq_pin(unsigned int irq)
-{
-	int bitmask;
-	if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
-		return;
-
-	/* disable interrupt & release IRQ pin */
-	bitmask = 1 << (irq - EXT_IRQ0);
-	switch(irq) {
-	case EXT_IRQ0:
-	case EXT_IRQ1:
-	case EXT_IRQ2:
-	case EXT_IRQ3:
-		*(volatile unsigned char *)IER &= ~bitmask;
-		H8300_GPIO_FREE(H8300_GPIO_P8, bitmask);
-		break ;
-	case EXT_IRQ4:
-	case EXT_IRQ5:
-		*(volatile unsigned char *)IER &= ~bitmask;
-		H8300_GPIO_FREE(H8300_GPIO_P9, bitmask);
-		break;
-	}
-}
diff --git a/arch/h8300/platform/h8s/entry.S b/arch/h8300/platform/h8s/entry.S
index aeb2e9f..f3d6b8e 100644
--- a/arch/h8300/platform/h8s/entry.S
+++ b/arch/h8300/platform/h8s/entry.S
@@ -31,12 +31,13 @@
 	mov.l	er0,@-sp
 
 	stc	ccr,r0l				/* check kernel mode */
-	orc	#0x10,ccr
 	btst	#4,r0l
 	bne	5f
 
-	mov.l	sp,@SYMBOL_NAME(sw_usp)		/* user mode */
-	mov.l	@sp,er0
+	/* user mode */
+	mov.l	sp,@SYMBOL_NAME(sw_usp)
+	mov.l	@sp,er0				/* restore saved er0 */
+	orc	#0x10,ccr			/* switch kernel stack */
 	mov.l	@SYMBOL_NAME(sw_ksp),sp
 	sub.l	#(LRET-LORIG),sp		/* allocate LORIG - LRET */ 
 	stm.l	er0-er3,@-sp
@@ -55,8 +56,9 @@
 	mov.l	er0,@(LER0-LER3:16,sp)		/* copy ER0 */
 	bra	6f
 5:
-	mov.l	@sp,er0				/* kernel mode */
-	subs	#2,sp				/* dummy ccr */
+	/* kernel mode */
+	mov.l	@sp,er0				/* restore saved er0 */
+	subs	#2,sp				/* set dummy ccr */
 	stm.l	er0-er3,@-sp
 	mov.w	@(LRET-LER3:16,sp),r1		/* copy old ccr */
 	mov.b	r1h,r1l
@@ -94,6 +96,7 @@
 	mov.l	@sp+,er1
 	add.l	#(LRET-LER1),sp			/* remove LORIG - LRET */ 
 	mov.l	sp,@SYMBOL_NAME(sw_ksp)
+	andc	#0xef,ccr			/* switch to user mode */
 	mov.l	er0,sp
 	bra	8f
 7:
@@ -173,9 +176,6 @@ SYMBOL_NAME_LABEL(interrupt_entry)
 SYMBOL_NAME_LABEL(system_call)
 	subs	#4,sp				/* dummy LVEC */
 	SAVE_ALL
-	mov.w	@(LCCR:16,sp),r1
-	bset	#4,r1l
-	ldc	r1l,ccr				/* restore ccr */
 	mov.l	er0,er4
 	mov.l	#-ENOSYS,er0
 	mov.l	er0,@(LER0:16,sp)
@@ -198,6 +198,7 @@ SYMBOL_NAME_LABEL(system_call)
 	mov.l	@(LER1:16,sp),er0
 	mov.l	@(LER2:16,sp),er1
 	mov.l	@(LER3:16,sp),er2
+	andc	#0x7f,ccr
 	jsr	@er4
 	mov.l	er0,@(LER0:16,sp)			/* save the return value */
 #if defined(CONFIG_SYSCALL_PRINT)