Re: [PATCH] h8300 generic irq
At Fri, 27 Apr 2007 19:09:35 -0700,
Andrew Morton wrote:
>
> On Thu, 26 Apr 2007 17:34:37 +0900
> Yoshinori Sato <[EMAIL PROTECTED]> wrote:
>
> > h8300 using generic irq handler patch.
> >
> > Signed-off-by: Yoshinori Sato <[EMAIL PROTECTED]>
> >
>
> Minor things:
>
> >
> > --- /dev/null
> > +++ b/arch/h8300/kernel/irq.c
> > @@ -0,0 +1,211 @@
> > +/*
> > + * linux/arch/h8300/kernel/irq.c
> > + *
> > + * Copyright 2007 Yoshinori Sato <[EMAIL PROTECTED]>
> > + */
> > +
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +
> > +#include
> > +#include
> > +#include
> > +#include
> > +#include
> > +
> > +/*#define DEBUG*/
> > +
> > +extern unsigned long *interrupt_redirect_table;
> > +extern const int h8300_saved_vectors[];
> > +extern const unsigned long h8300_trap_table[];
> > +int h8300_enable_irq_pin(unsigned int irq);
> > +void h8300_disable_irq_pin(unsigned int irq);
>
> Please always avoid putting extern declarations into C files. Please them
> in a header file which is visible tot he definition site asw well as all
> callers/users.
>
> For something which is defined in assembly code (like
> interrupt_redirect_table) it isn't so clear, because we cannot do
> typechecking. But I think it's still best to include the declaration in a
> header file so that we only have to declare it once. Plus it _is_ a global
> symbol.
I was sure. correct it.
> > +
> > +/*
> > + * h8300 interrupt controler implementation
> > + */
> > +struct irq_chip h8300irq_chip = {
> > + .name = "H8300-INTC",
> > + .startup= h8300_startup_irq,
> > + .shutdown = h8300_shutdown_irq,
> > + .enable = h8300_enable_irq,
> > + .disable= h8300_disable_irq,
> > + .ack= NULL,
> > + .end= h8300_end_irq,
> > +};
>
> I think this could have static scope.
I do not need to refer from the outside.
I make a change in static.
> > +void ack_bad_irq(unsigned int irq)
> > +{
> > + printk("unexpected IRQ trap at vector %02x\n", irq);
> > +}
>
> printks should generally have facility levels (KERN_*)
>
> > + panic("interrupt vector serup failed.");
>
> typo
>
> > + for ( i = 0; i < NR_IRQS; i++) {
>
> for (i = 0
>
> > + if (i == *saved_vector) {
> > + ramvec_p++;
> > + saved_vector++;
> > + } else {
> > + if ( i < NR_TRAPS ) {
>
> if (i < NR_TRAPS)
>
>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] h8300 generic irq
At Fri, 27 Apr 2007 19:09:35 -0700,
Andrew Morton wrote:
On Thu, 26 Apr 2007 17:34:37 +0900
Yoshinori Sato [EMAIL PROTECTED] wrote:
h8300 using generic irq handler patch.
Signed-off-by: Yoshinori Sato [EMAIL PROTECTED]
Minor things:
--- /dev/null
+++ b/arch/h8300/kernel/irq.c
@@ -0,0 +1,211 @@
+/*
+ * linux/arch/h8300/kernel/irq.c
+ *
+ * Copyright 2007 Yoshinori Sato [EMAIL PROTECTED]
+ */
+
+#include linux/module.h
+#include linux/types.h
+#include linux/kernel.h
+#include linux/sched.h
+#include linux/kernel_stat.h
+#include linux/seq_file.h
+#include linux/init.h
+#include linux/random.h
+#include linux/bootmem.h
+#include linux/irq.h
+
+#include asm/system.h
+#include asm/traps.h
+#include asm/io.h
+#include asm/setup.h
+#include asm/errno.h
+
+/*#define DEBUG*/
+
+extern unsigned long *interrupt_redirect_table;
+extern const int h8300_saved_vectors[];
+extern const unsigned long h8300_trap_table[];
+int h8300_enable_irq_pin(unsigned int irq);
+void h8300_disable_irq_pin(unsigned int irq);
Please always avoid putting extern declarations into C files. Please them
in a header file which is visible tot he definition site asw well as all
callers/users.
For something which is defined in assembly code (like
interrupt_redirect_table) it isn't so clear, because we cannot do
typechecking. But I think it's still best to include the declaration in a
header file so that we only have to declare it once. Plus it _is_ a global
symbol.
I was sure. correct it.
+
+/*
+ * h8300 interrupt controler implementation
+ */
+struct irq_chip h8300irq_chip = {
+ .name = H8300-INTC,
+ .startup= h8300_startup_irq,
+ .shutdown = h8300_shutdown_irq,
+ .enable = h8300_enable_irq,
+ .disable= h8300_disable_irq,
+ .ack= NULL,
+ .end= h8300_end_irq,
+};
I think this could have static scope.
I do not need to refer from the outside.
I make a change in static.
+void ack_bad_irq(unsigned int irq)
+{
+ printk(unexpected IRQ trap at vector %02x\n, irq);
+}
printks should generally have facility levels (KERN_*)
+ panic(interrupt vector serup failed.);
typo
+ for ( i = 0; i NR_IRQS; i++) {
for (i = 0
+ if (i == *saved_vector) {
+ ramvec_p++;
+ saved_vector++;
+ } else {
+ if ( i NR_TRAPS ) {
if (i NR_TRAPS)
-
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] h8300 generic irq
On Fri, Apr 27, 2007 at 07:09:35PM -0700, Andrew Morton wrote:
> > +/*
> > + * h8300 interrupt controler implementation
> > + */
> > +struct irq_chip h8300irq_chip = {
> > + .name = "H8300-INTC",
> > + .startup= h8300_startup_irq,
> > + .shutdown = h8300_shutdown_irq,
> > + .enable = h8300_enable_irq,
> > + .disable= h8300_disable_irq,
> > + .ack= NULL,
> > + .end= h8300_end_irq,
> > +};
>
> I think this could have static scope.
Pluse there's not need to set .ack to NULL explicitly.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] h8300 generic irq
On Fri, Apr 27, 2007 at 07:09:35PM -0700, Andrew Morton wrote:
+/*
+ * h8300 interrupt controler implementation
+ */
+struct irq_chip h8300irq_chip = {
+ .name = H8300-INTC,
+ .startup= h8300_startup_irq,
+ .shutdown = h8300_shutdown_irq,
+ .enable = h8300_enable_irq,
+ .disable= h8300_disable_irq,
+ .ack= NULL,
+ .end= h8300_end_irq,
+};
I think this could have static scope.
Pluse there's not need to set .ack to NULL explicitly.
-
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] h8300 generic irq
On Thu, 26 Apr 2007 17:34:37 +0900
Yoshinori Sato <[EMAIL PROTECTED]> wrote:
> h8300 using generic irq handler patch.
>
> Signed-off-by: Yoshinori Sato <[EMAIL PROTECTED]>
>
Minor things:
>
> --- /dev/null
> +++ b/arch/h8300/kernel/irq.c
> @@ -0,0 +1,211 @@
> +/*
> + * linux/arch/h8300/kernel/irq.c
> + *
> + * Copyright 2007 Yoshinori Sato <[EMAIL PROTECTED]>
> + */
> +
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +#include
> +
> +#include
> +#include
> +#include
> +#include
> +#include
> +
> +/*#define DEBUG*/
> +
> +extern unsigned long *interrupt_redirect_table;
> +extern const int h8300_saved_vectors[];
> +extern const unsigned long h8300_trap_table[];
> +int h8300_enable_irq_pin(unsigned int irq);
> +void h8300_disable_irq_pin(unsigned int irq);
Please always avoid putting extern declarations into C files. Please them
in a header file which is visible tot he definition site asw well as all
callers/users.
For something which is defined in assembly code (like
interrupt_redirect_table) it isn't so clear, because we cannot do
typechecking. But I think it's still best to include the declaration in a
header file so that we only have to declare it once. Plus it _is_ a global
symbol.
> +
> +/*
> + * h8300 interrupt controler implementation
> + */
> +struct irq_chip h8300irq_chip = {
> + .name = "H8300-INTC",
> + .startup= h8300_startup_irq,
> + .shutdown = h8300_shutdown_irq,
> + .enable = h8300_enable_irq,
> + .disable= h8300_disable_irq,
> + .ack= NULL,
> + .end= h8300_end_irq,
> +};
I think this could have static scope.
> +void ack_bad_irq(unsigned int irq)
> +{
> + printk("unexpected IRQ trap at vector %02x\n", irq);
> +}
printks should generally have facility levels (KERN_*)
> + panic("interrupt vector serup failed.");
typo
> + for ( i = 0; i < NR_IRQS; i++) {
for (i = 0
> + if (i == *saved_vector) {
> + ramvec_p++;
> + saved_vector++;
> + } else {
> + if ( i < NR_TRAPS ) {
if (i < NR_TRAPS)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] h8300 generic irq
On Thu, 26 Apr 2007 17:34:37 +0900
Yoshinori Sato [EMAIL PROTECTED] wrote:
h8300 using generic irq handler patch.
Signed-off-by: Yoshinori Sato [EMAIL PROTECTED]
Minor things:
--- /dev/null
+++ b/arch/h8300/kernel/irq.c
@@ -0,0 +1,211 @@
+/*
+ * linux/arch/h8300/kernel/irq.c
+ *
+ * Copyright 2007 Yoshinori Sato [EMAIL PROTECTED]
+ */
+
+#include linux/module.h
+#include linux/types.h
+#include linux/kernel.h
+#include linux/sched.h
+#include linux/kernel_stat.h
+#include linux/seq_file.h
+#include linux/init.h
+#include linux/random.h
+#include linux/bootmem.h
+#include linux/irq.h
+
+#include asm/system.h
+#include asm/traps.h
+#include asm/io.h
+#include asm/setup.h
+#include asm/errno.h
+
+/*#define DEBUG*/
+
+extern unsigned long *interrupt_redirect_table;
+extern const int h8300_saved_vectors[];
+extern const unsigned long h8300_trap_table[];
+int h8300_enable_irq_pin(unsigned int irq);
+void h8300_disable_irq_pin(unsigned int irq);
Please always avoid putting extern declarations into C files. Please them
in a header file which is visible tot he definition site asw well as all
callers/users.
For something which is defined in assembly code (like
interrupt_redirect_table) it isn't so clear, because we cannot do
typechecking. But I think it's still best to include the declaration in a
header file so that we only have to declare it once. Plus it _is_ a global
symbol.
+
+/*
+ * h8300 interrupt controler implementation
+ */
+struct irq_chip h8300irq_chip = {
+ .name = H8300-INTC,
+ .startup= h8300_startup_irq,
+ .shutdown = h8300_shutdown_irq,
+ .enable = h8300_enable_irq,
+ .disable= h8300_disable_irq,
+ .ack= NULL,
+ .end= h8300_end_irq,
+};
I think this could have static scope.
+void ack_bad_irq(unsigned int irq)
+{
+ printk(unexpected IRQ trap at vector %02x\n, irq);
+}
printks should generally have facility levels (KERN_*)
+ panic(interrupt vector serup failed.);
typo
+ for ( i = 0; i NR_IRQS; i++) {
for (i = 0
+ if (i == *saved_vector) {
+ ramvec_p++;
+ saved_vector++;
+ } else {
+ if ( i NR_TRAPS ) {
if (i NR_TRAPS)
-
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[PATCH] h8300 generic irq
h8300 using generic irq handler patch.
Signed-off-by: Yoshinori Sato <[EMAIL PROTECTED]>
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 1734d96..82d96ae 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -49,6 +49,10 @@ config GENERIC_HWEIGHT
bool
default y
+config GENERIC_HARDIRQS
+ bool
+ default y
+
config GENERIC_CALIBRATE_DELAY
bool
default y
diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
index 40b3f56..b2d896a 100644
--- a/arch/h8300/Makefile
+++ b/arch/h8300/Makefile
@@ -41,7 +41,7 @@ LDFLAGS += $(ldflags-y)
CROSS_COMPILE = h8300-elf-
LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(CFLAGS) -print-libgcc-file-name)
-head-y := arch/$(ARCH)/platform/$(platform-y)/$(board-y)/crt0_$(model-y).o
+head-y := arch/$(ARCH)/platform/$(PLATFORM)/$(BOARD)/crt0_$(MODEL).o
core-y += arch/$(ARCH)/kernel/ \
arch/$(ARCH)/mm/
diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile
index 4edbc2e..ccc1a7f 100644
--- a/arch/h8300/kernel/Makefile
+++ b/arch/h8300/kernel/Makefile
@@ -4,10 +4,8 @@
extra-y := vmlinux.lds
-obj-y := process.o traps.o ptrace.o ints.o \
+obj-y := process.o traps.o ptrace.o irq.o \
sys_h8300.o time.o semaphore.o signal.o \
- setup.o gpio.o init_task.o syscalls.o devres.o
-
-devres-y = ../../../kernel/irq/devres.o
+ setup.o gpio.o init_task.o syscalls.o
obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o
diff --git a/arch/h8300/kernel/irq.c b/arch/h8300/kernel/irq.c
new file mode 100644
index 000..3e0c37f
--- /dev/null
+++ b/arch/h8300/kernel/irq.c
@@ -0,0 +1,211 @@
+/*
+ * linux/arch/h8300/kernel/irq.c
+ *
+ * Copyright 2007 Yoshinori Sato <[EMAIL PROTECTED]>
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+
+/*#define DEBUG*/
+
+extern unsigned long *interrupt_redirect_table;
+extern const int h8300_saved_vectors[];
+extern const unsigned long h8300_trap_table[];
+int h8300_enable_irq_pin(unsigned int irq);
+void h8300_disable_irq_pin(unsigned int irq);
+
+#define CPU_VECTOR ((unsigned long *)0x00)
+#define ADDR_MASK (0xff)
+
+static inline int is_ext_irq(unsigned int irq)
+{
+ return (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS));
+}
+
+static void h8300_enable_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ IER_REGS |= 1 << (irq - EXT_IRQ0);
+}
+
+static void h8300_disable_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ IER_REGS &= ~(1 << (irq - EXT_IRQ0));
+}
+
+static void h8300_end_irq(unsigned int irq)
+{
+}
+
+static unsigned int h8300_startup_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ return h8300_enable_irq_pin(irq);
+ else
+ return 0;
+}
+
+static void h8300_shutdown_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ h8300_disable_irq_pin(irq);
+}
+
+/*
+ * h8300 interrupt controler implementation
+ */
+struct irq_chip h8300irq_chip = {
+ .name = "H8300-INTC",
+ .startup= h8300_startup_irq,
+ .shutdown = h8300_shutdown_irq,
+ .enable = h8300_enable_irq,
+ .disable= h8300_disable_irq,
+ .ack= NULL,
+ .end= h8300_end_irq,
+};
+
+void ack_bad_irq(unsigned int irq)
+{
+ printk("unexpected IRQ trap at vector %02x\n", irq);
+}
+
+#if defined(CONFIG_RAMKERNEL)
+static unsigned long __init *get_vector_address(void)
+{
+ unsigned long *rom_vector = CPU_VECTOR;
+ unsigned long base,tmp;
+ int vec_no;
+
+ base = rom_vector[EXT_IRQ0] & ADDR_MASK;
+
+ /* check romvector format */
+ for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ0+EXT_IRQS; vec_no++) {
+ if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] &
ADDR_MASK))
+ return NULL;
+ }
+
+ /* ramvector base address */
+ base -= EXT_IRQ0*4;
+
+ /* writerble check */
+ tmp = ~(*(volatile unsigned long *)base);
+ (*(volatile unsigned long *)base) = tmp;
+ if ((*(volatile unsigned long *)base) != tmp)
+ return NULL;
+ return (unsigned long *)base;
+}
+
+static void __init setup_vector(void)
+{
+ int i;
+ unsigned long *ramvec,*ramvec_p;
+ const unsigned long *trap_entry;
+ const int *saved_vector;
+
+ ramvec = get_vector_address();
+ if (ramvec == NULL)
+ panic("interrupt vector serup failed.");
+ else
+ printk(KERN_INFO "virtual vector at 0x%08lx\n",(unsigned
long)ramvec);
+
+ /* create redirect table */
+ ramvec_p = ramvec;
+ trap_entry = h8300_trap_table;
+ saved_vector = h8300_saved_vectors;
+ for ( i = 0; i < NR_IRQS; i++) {
+ if (i == *saved_vector) {
+ ramvec_p++;
+
[PATCH] h8300 generic irq
h8300 using generic irq handler patch.
Signed-off-by: Yoshinori Sato [EMAIL PROTECTED]
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 1734d96..82d96ae 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -49,6 +49,10 @@ config GENERIC_HWEIGHT
bool
default y
+config GENERIC_HARDIRQS
+ bool
+ default y
+
config GENERIC_CALIBRATE_DELAY
bool
default y
diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
index 40b3f56..b2d896a 100644
--- a/arch/h8300/Makefile
+++ b/arch/h8300/Makefile
@@ -41,7 +41,7 @@ LDFLAGS += $(ldflags-y)
CROSS_COMPILE = h8300-elf-
LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(CFLAGS) -print-libgcc-file-name)
-head-y := arch/$(ARCH)/platform/$(platform-y)/$(board-y)/crt0_$(model-y).o
+head-y := arch/$(ARCH)/platform/$(PLATFORM)/$(BOARD)/crt0_$(MODEL).o
core-y += arch/$(ARCH)/kernel/ \
arch/$(ARCH)/mm/
diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile
index 4edbc2e..ccc1a7f 100644
--- a/arch/h8300/kernel/Makefile
+++ b/arch/h8300/kernel/Makefile
@@ -4,10 +4,8 @@
extra-y := vmlinux.lds
-obj-y := process.o traps.o ptrace.o ints.o \
+obj-y := process.o traps.o ptrace.o irq.o \
sys_h8300.o time.o semaphore.o signal.o \
- setup.o gpio.o init_task.o syscalls.o devres.o
-
-devres-y = ../../../kernel/irq/devres.o
+ setup.o gpio.o init_task.o syscalls.o
obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o
diff --git a/arch/h8300/kernel/irq.c b/arch/h8300/kernel/irq.c
new file mode 100644
index 000..3e0c37f
--- /dev/null
+++ b/arch/h8300/kernel/irq.c
@@ -0,0 +1,211 @@
+/*
+ * linux/arch/h8300/kernel/irq.c
+ *
+ * Copyright 2007 Yoshinori Sato [EMAIL PROTECTED]
+ */
+
+#include linux/module.h
+#include linux/types.h
+#include linux/kernel.h
+#include linux/sched.h
+#include linux/kernel_stat.h
+#include linux/seq_file.h
+#include linux/init.h
+#include linux/random.h
+#include linux/bootmem.h
+#include linux/irq.h
+
+#include asm/system.h
+#include asm/traps.h
+#include asm/io.h
+#include asm/setup.h
+#include asm/errno.h
+
+/*#define DEBUG*/
+
+extern unsigned long *interrupt_redirect_table;
+extern const int h8300_saved_vectors[];
+extern const unsigned long h8300_trap_table[];
+int h8300_enable_irq_pin(unsigned int irq);
+void h8300_disable_irq_pin(unsigned int irq);
+
+#define CPU_VECTOR ((unsigned long *)0x00)
+#define ADDR_MASK (0xff)
+
+static inline int is_ext_irq(unsigned int irq)
+{
+ return (irq = EXT_IRQ0 irq = (EXT_IRQ0 + EXT_IRQS));
+}
+
+static void h8300_enable_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ IER_REGS |= 1 (irq - EXT_IRQ0);
+}
+
+static void h8300_disable_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ IER_REGS = ~(1 (irq - EXT_IRQ0));
+}
+
+static void h8300_end_irq(unsigned int irq)
+{
+}
+
+static unsigned int h8300_startup_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ return h8300_enable_irq_pin(irq);
+ else
+ return 0;
+}
+
+static void h8300_shutdown_irq(unsigned int irq)
+{
+ if (is_ext_irq(irq))
+ h8300_disable_irq_pin(irq);
+}
+
+/*
+ * h8300 interrupt controler implementation
+ */
+struct irq_chip h8300irq_chip = {
+ .name = H8300-INTC,
+ .startup= h8300_startup_irq,
+ .shutdown = h8300_shutdown_irq,
+ .enable = h8300_enable_irq,
+ .disable= h8300_disable_irq,
+ .ack= NULL,
+ .end= h8300_end_irq,
+};
+
+void ack_bad_irq(unsigned int irq)
+{
+ printk(unexpected IRQ trap at vector %02x\n, irq);
+}
+
+#if defined(CONFIG_RAMKERNEL)
+static unsigned long __init *get_vector_address(void)
+{
+ unsigned long *rom_vector = CPU_VECTOR;
+ unsigned long base,tmp;
+ int vec_no;
+
+ base = rom_vector[EXT_IRQ0] ADDR_MASK;
+
+ /* check romvector format */
+ for (vec_no = EXT_IRQ1; vec_no = EXT_IRQ0+EXT_IRQS; vec_no++) {
+ if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no]
ADDR_MASK))
+ return NULL;
+ }
+
+ /* ramvector base address */
+ base -= EXT_IRQ0*4;
+
+ /* writerble check */
+ tmp = ~(*(volatile unsigned long *)base);
+ (*(volatile unsigned long *)base) = tmp;
+ if ((*(volatile unsigned long *)base) != tmp)
+ return NULL;
+ return (unsigned long *)base;
+}
+
+static void __init setup_vector(void)
+{
+ int i;
+ unsigned long *ramvec,*ramvec_p;
+ const unsigned long *trap_entry;
+ const int *saved_vector;
+
+ ramvec = get_vector_address();
+ if (ramvec == NULL)
+ panic(interrupt vector serup failed.);
+ else
+ printk(KERN_INFO virtual vector at 0x%08lx\n,(unsigned
long)ramvec);
+
+ /* create redirect table */
+ ramvec_p = ramvec;
+ trap_entry = h8300_trap_table;
+
