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Date: Sat, 16 Feb 2008 01:23:17 -0500
From: Yoshinori Sato <ysato@...rs.sourceforge.jp>
To: Andrew Morton <akpm@...l.org>
Cc: lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/6] h8300 IRQ handling update
Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
At Sat, 16 Feb 2008 01:13:58 -0500,
Yoshinori Sato wrote:
>
> - add missing file and declare.
> - remove unused file and macros.
> - some cleanup.
>
> arch/h8300/kernel/irq.c | 4 +-
> arch/h8300/platform/h8300h/Makefile | 2 +-
> arch/h8300/platform/h8300h/irq.c | 82 ++++++++++
> arch/h8300/platform/h8s/ints.c | 304 -----------------------------------
> arch/h8300/platform/h8s/ints_h8s.c | 104 ------------
> arch/h8300/platform/h8s/irq.c | 104 ++++++++++++
> include/asm-h8300/hardirq.h | 2 +
> include/asm-h8300/irq.h | 19 +--
> 8 files changed, 194 insertions(+), 427 deletions(-)
> create mode 100644 arch/h8300/platform/h8300h/irq.c
> delete mode 100644 arch/h8300/platform/h8s/ints.c
> delete mode 100644 arch/h8300/platform/h8s/ints_h8s.c
> create mode 100644 arch/h8300/platform/h8s/irq.c
>
> diff --git a/arch/h8300/kernel/irq.c b/arch/h8300/kernel/irq.c
> index 5a1b4cf..ef4f004 100644
> --- a/arch/h8300/kernel/irq.c
> +++ b/arch/h8300/kernel/irq.c
> @@ -26,7 +26,7 @@
>
> extern unsigned long *interrupt_redirect_table;
> extern const int h8300_saved_vectors[];
> -extern const unsigned long h8300_trap_table[];
> +extern const h8300_vector h8300_trap_table[];
> int h8300_enable_irq_pin(unsigned int irq);
> void h8300_disable_irq_pin(unsigned int irq);
>
> @@ -116,7 +116,7 @@ static void __init setup_vector(void)
> {
> int i;
> unsigned long *ramvec,*ramvec_p;
> - const unsigned long *trap_entry;
> + const h8300_vector *trap_entry;
> const int *saved_vector;
>
> ramvec = get_vector_address();
> diff --git a/arch/h8300/platform/h8300h/Makefile b/arch/h8300/platform/h8300h/Makefile
> index c509636..420f73b 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 := irq_pin.o ptrace_h8300h.o
> +obj-y := irq.o ptrace_h8300h.o
> diff --git a/arch/h8300/platform/h8300h/irq.c b/arch/h8300/platform/h8300h/irq.c
> new file mode 100644
> index 0000000..e977345
> --- /dev/null
> +++ b/arch/h8300/platform/h8300h/irq.c
> @@ -0,0 +1,82 @@
> +/*
> + * Interrupt handling H8/300H depend.
> + * Yoshinori Sato <ysato@...rs.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>
> +
> +const int __initdata h8300_saved_vectors[] = {
> +#if defined(CONFIG_GDB_DEBUG)
> + TRAP3_VEC, /* TRAPA #3 is GDB breakpoint */
> +#endif
> + -1,
> +};
> +
> +const h8300_vector __initdata h8300_trap_table[] = {
> + 0, 0, 0, 0, 0, 0, 0, 0,
> + system_call,
> + 0,
> + 0,
> + trace_break,
> +};
> +
> +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/ints.c b/arch/h8300/platform/h8s/ints.c
> deleted file mode 100644
> index ac10b97..0000000
> --- a/arch/h8300/platform/h8s/ints.c
> +++ /dev/null
> @@ -1,304 +0,0 @@
> -/*
> - * linux/arch/h8300/platform/h8s/ints.c
> - *
> - * Yoshinori Sato <ysato@...rs.sourceforge.jp>
> - *
> - * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c
> - *
> - * This file is subject to the terms and conditions of the GNU General Public
> - * License. See the file COPYING in the main directory of this archive
> - * for more details.
> - *
> - * Copyright 1996 Roman Zippel
> - * Copyright 1999 D. Jeff Dionne <jeff@...control.com>
> - */
> -
> -#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/interrupt.h>
> -#include <linux/bootmem.h>
> -#include <linux/random.h>
> -#include <linux/hardirq.h>
> -
> -#include <asm/system.h>
> -#include <asm/irq.h>
> -#include <asm/traps.h>
> -#include <asm/io.h>
> -#include <asm/setup.h>
> -#include <asm/gpio.h>
> -#include <asm/regs267x.h>
> -#include <asm/errno.h>
> -
> -/*
> - * This structure has only 4 elements for speed reasons
> - */
> -typedef struct irq_handler {
> - irqreturn_t (*handler)(int, void *, struct pt_regs *);
> - int flags;
> - int count;
> - void *dev_id;
> - const char *devname;
> -} irq_handler_t;
> -
> -static irq_handler_t *irq_list[NR_IRQS];
> -
> -/* IRQ pin assignment */
> -struct irq_pins {
> - unsigned char port_no;
> - unsigned char bit_no;
> -};
> -/* ISTR = 0 */
> -static const struct irq_pins irq_assign_table0[16]={
> - {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
> - {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
> - {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
> - {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
> - {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
> - {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
> - {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
> - {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
> -};
> -/* ISTR = 1 */
> -static const struct irq_pins irq_assign_table1[16]={
> - {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
> - {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
> - {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
> - {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
> - {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
> - {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
> - {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
> - {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
> -};
> -
> -static short use_kmalloc = 0;
> -
> -extern unsigned long *interrupt_redirect_table;
> -
> -#define CPU_VECTOR ((unsigned long *)0x000000)
> -#define ADDR_MASK (0xffffff)
> -
> -static inline unsigned long *get_vector_address(void)
> -{
> - volatile 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_IRQ15; 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 = ~(*(unsigned long *)base);
> - (*(unsigned long *)base) = tmp;
> - if ((*(unsigned long *)base) != tmp)
> - return NULL;
> - return (unsigned long *)base;
> -}
> -
> -void __init init_IRQ(void)
> -{
> -#if defined(CONFIG_RAMKERNEL)
> - int i;
> - unsigned long *ramvec,*ramvec_p;
> - unsigned long break_vec;
> -
> - ramvec = get_vector_address();
> - if (ramvec == NULL)
> - panic("interrupt vector serup failed.");
> - else
> - printk("virtual vector at 0x%08lx\n",(unsigned long)ramvec);
> -
> -#if defined(CONFIG_GDB_DEBUG)
> - /* save original break vector */
> - break_vec = ramvec[TRAP3_VEC];
> -#else
> - break_vec = VECTOR(trace_break);
> -#endif
> -
> - /* create redirect table */
> - for (ramvec_p = ramvec, i = 0; i < NR_IRQS; i++)
> - *ramvec_p++ = REDIRECT(interrupt_entry);
> -
> - /* set special vector */
> - ramvec[TRAP0_VEC] = VECTOR(system_call);
> - ramvec[TRAP3_VEC] = break_vec;
> - interrupt_redirect_table = ramvec;
> -#ifdef DUMP_VECTOR
> - ramvec_p = ramvec;
> - for (i = 0; i < NR_IRQS; i++) {
> - if ((i % 8) == 0)
> - printk("\n%p: ",ramvec_p);
> - printk("%p ",*ramvec_p);
> - ramvec_p++;
> - }
> - printk("\n");
> -#endif
> -#endif
> -}
> -
> -int request_irq(unsigned int irq,
> - irqreturn_t (*handler)(int, void *, struct pt_regs *),
> - unsigned long flags, const char *devname, void *dev_id)
> -{
> - unsigned short ptn = 1 << (irq - EXT_IRQ0);
> - irq_handler_t *irq_handle;
> - if (irq < 0 || irq >= NR_IRQS) {
> - printk("Incorrect IRQ %d from %s\n", irq, devname);
> - return -EINVAL;
> - }
> - if (irq_list[irq])
> - return -EBUSY; /* already used */
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> - /* initialize IRQ pin */
> - unsigned int port_no,bit_no;
> - if (*(volatile unsigned short *)ITSR & ptn) {
> - port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
> - bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
> - } else {
> - port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
> - bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
> - }
> - if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
> - return -EBUSY; /* pin already use */
> - H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
> - *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
> - }
> -
> - if (use_kmalloc)
> - irq_handle = kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
> - else {
> - /* use bootmem allocator */
> - irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
> - irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
> - }
> -
> - if (irq_handle == NULL)
> - return -ENOMEM;
> -
> - irq_handle->handler = handler;
> - irq_handle->flags = flags;
> - irq_handle->count = 0;
> - irq_handle->dev_id = dev_id;
> - irq_handle->devname = devname;
> - irq_list[irq] = irq_handle;
> - if (irq_handle->flags & IRQF_SAMPLE_RANDOM)
> - rand_initialize_irq(irq);
> -
> - /* enable interrupt */
> - /* compatible i386 */
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
> - *(volatile unsigned short *)IER |= ptn;
> - return 0;
> -}
> -
> -EXPORT_SYMBOL(request_irq);
> -
> -void free_irq(unsigned int irq, void *dev_id)
> -{
> - if (irq >= NR_IRQS)
> - return;
> - if (irq_list[irq]->dev_id != dev_id)
> - printk("%s: Removing probably wrong IRQ %d from %s\n",
> - __FUNCTION__, irq, irq_list[irq]->devname);
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> - /* disable interrupt & release IRQ pin */
> - unsigned short port_no,bit_no;
> - *(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0));
> - *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
> - if (*(volatile unsigned short *)ITSR & (1 << (irq - EXT_IRQ0))) {
> - port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
> - bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
> - } else {
> - port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
> - bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
> - }
> - H8300_GPIO_FREE(port_no, bit_no);
> - }
> - if (((unsigned long)irq_list[irq] & 0x80000000) == 0) {
> - kfree(irq_list[irq]);
> - irq_list[irq] = NULL;
> - }
> -}
> -
> -EXPORT_SYMBOL(free_irq);
> -
> -unsigned long probe_irq_on (void)
> -{
> - return 0;
> -}
> -
> -EXPORT_SYMBOL(probe_irq_on);
> -
> -int probe_irq_off (unsigned long irqs)
> -{
> - return 0;
> -}
> -
> -EXPORT_SYMBOL(probe_irq_off);
> -
> -void enable_irq(unsigned int irq)
> -{
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
> - *(volatile unsigned short *)IER |= 1 << (irq - EXT_IRQ0);
> -}
> -
> -void disable_irq(unsigned int irq)
> -{
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
> - *(volatile unsigned short *)IER &= ~(1 << (irq - EXT_IRQ0));
> -}
> -
> -asmlinkage void process_int(unsigned long vec, struct pt_regs *fp)
> -{
> - irq_enter();
> - /* ISR clear */
> - /* compatible i386 */
> - if (vec >= EXT_IRQ0 && vec <= EXT_IRQ15)
> - *(volatile unsigned short *)ISR &= ~(1 << (vec - EXT_IRQ0));
> - if (vec < NR_IRQS) {
> - if (irq_list[vec]) {
> - irq_list[vec]->handler(vec, irq_list[vec]->dev_id, fp);
> - irq_list[vec]->count++;
> - if (irq_list[vec]->flags & IRQF_SAMPLE_RANDOM)
> - add_interrupt_randomness(vec);
> - }
> - } else {
> - BUG();
> - }
> - irq_exit();
> -}
> -
> -int show_interrupts(struct seq_file *p, void *v)
> -{
> - int i = *(loff_t *) v;
> -
> - if ((i < NR_IRQS) && (irq_list[i] !=NULL)) {
> - seq_printf(p, "%3d: %10u ",i,irq_list[i]->count);
> - seq_printf(p, "%s\n", irq_list[i]->devname);
> - }
> -
> - return 0;
> -}
> -
> -void init_irq_proc(void)
> -{
> -}
> -
> -static int __init enable_kmalloc(void)
> -{
> - use_kmalloc = 1;
> - return 0;
> -}
> -core_initcall(enable_kmalloc);
> diff --git a/arch/h8300/platform/h8s/ints_h8s.c b/arch/h8300/platform/h8s/ints_h8s.c
> deleted file mode 100644
> index faa8a45..0000000
> --- a/arch/h8300/platform/h8s/ints_h8s.c
> +++ /dev/null
> @@ -1,104 +0,0 @@
> -/*
> - * linux/arch/h8300/platform/h8s/ints_h8s.c
> - * Interrupt handling CPU variants
> - *
> - * Yoshinori Sato <ysato@...rs.sourceforge.jp>
> - *
> - */
> -
> -#include <linux/init.h>
> -#include <linux/errno.h>
> -#include <linux/kernel.h>
> -
> -#include <asm/ptrace.h>
> -#include <asm/traps.h>
> -#include <asm/irq.h>
> -#include <asm/io.h>
> -#include <asm/gpio.h>
> -#include <asm/regs267x.h>
> -
> -/* saved vector list */
> -const int __initdata h8300_saved_vectors[]={
> -#if defined(CONFIG_GDB_DEBUG)
> - TRACE_VEC,
> - TRAP3_VEC,
> -#endif
> - -1
> -};
> -
> -/* trap entry table */
> -const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
> - 0,0,0,0,0,
> - (unsigned long)trace_break, /* TRACE */
> - 0,0,
> - (unsigned long)system_call, /* TRAPA #0 */
> - 0,0,0,0,0,0,0
> -};
> -
> -/* IRQ pin assignment */
> -struct irq_pins {
> - unsigned char port_no;
> - unsigned char bit_no;
> -} __attribute__((aligned(1),packed));
> -/* ISTR = 0 */
> -static const struct irq_pins irq_assign_table0[16]={
> - {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
> - {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
> - {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
> - {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
> - {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
> - {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
> - {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
> - {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
> -};
> -/* ISTR = 1 */
> -static const struct irq_pins irq_assign_table1[16]={
> - {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
> - {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
> - {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
> - {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
> - {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
> - {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
> - {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
> - {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
> -};
> -
> -/* IRQ to GPIO pin translation */
> -#define IRQ_GPIO_MAP(irqbit,irq,port,bit) \
> -do { \
> - if (*(volatile unsigned short *)ITSR & irqbit) { \
> - port = irq_assign_table1[irq - EXT_IRQ0].port_no; \
> - bit = irq_assign_table1[irq - EXT_IRQ0].bit_no; \
> - } else { \
> - port = irq_assign_table0[irq - EXT_IRQ0].port_no; \
> - bit = irq_assign_table0[irq - EXT_IRQ0].bit_no; \
> - } \
> -} while(0)
> -
> -int h8300_enable_irq_pin(unsigned int irq)
> -{
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> - unsigned short ptn = 1 << (irq - EXT_IRQ0);
> - unsigned int port_no,bit_no;
> - IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
> - if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
> - return -EBUSY; /* pin already use */
> - H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
> - *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
> - }
> -
> - return 0;
> -}
> -
> -void h8300_disable_irq_pin(unsigned int irq)
> -{
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> - /* disable interrupt & release IRQ pin */
> - unsigned short ptn = 1 << (irq - EXT_IRQ0);
> - unsigned short port_no,bit_no;
> - *(volatile unsigned short *)ISR &= ~ptn;
> - *(volatile unsigned short *)IER &= ~ptn;
> - IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
> - H8300_GPIO_FREE(port_no, bit_no);
> - }
> -}
> diff --git a/arch/h8300/platform/h8s/irq.c b/arch/h8300/platform/h8s/irq.c
> new file mode 100644
> index 0000000..2abc22b
> --- /dev/null
> +++ b/arch/h8300/platform/h8s/irq.c
> @@ -0,0 +1,104 @@
> +/*
> + * linux/arch/h8300/platform/h8s/ints_h8s.c
> + * Interrupt handling CPU variants
> + *
> + * Yoshinori Sato <ysato@...rs.sourceforge.jp>
> + *
> + */
> +
> +#include <linux/init.h>
> +#include <linux/errno.h>
> +#include <linux/kernel.h>
> +
> +#include <asm/ptrace.h>
> +#include <asm/traps.h>
> +#include <asm/irq.h>
> +#include <asm/io.h>
> +#include <asm/gpio.h>
> +#include <asm/regs267x.h>
> +
> +/* saved vector list */
> +const int __initdata h8300_saved_vectors[]={
> +#if defined(CONFIG_GDB_DEBUG)
> + TRACE_VEC,
> + TRAP3_VEC,
> +#endif
> + -1
> +};
> +
> +/* trap entry table */
> +const H8300_VECTOR __initdata h8300_trap_table[] = {
> + 0,0,0,0,0,
> + trace_break, /* TRACE */
> + 0,0,
> + system_call, /* TRAPA #0 */
> + 0,0,0,0,0,0,0
> +};
> +
> +/* IRQ pin assignment */
> +struct irq_pins {
> + unsigned char port_no;
> + unsigned char bit_no;
> +} __attribute__((aligned(1),packed));
> +/* ISTR = 0 */
> +static const struct irq_pins irq_assign_table0[16]={
> + {H8300_GPIO_P5,H8300_GPIO_B0},{H8300_GPIO_P5,H8300_GPIO_B1},
> + {H8300_GPIO_P5,H8300_GPIO_B2},{H8300_GPIO_P5,H8300_GPIO_B3},
> + {H8300_GPIO_P5,H8300_GPIO_B4},{H8300_GPIO_P5,H8300_GPIO_B5},
> + {H8300_GPIO_P5,H8300_GPIO_B6},{H8300_GPIO_P5,H8300_GPIO_B7},
> + {H8300_GPIO_P6,H8300_GPIO_B0},{H8300_GPIO_P6,H8300_GPIO_B1},
> + {H8300_GPIO_P6,H8300_GPIO_B2},{H8300_GPIO_P6,H8300_GPIO_B3},
> + {H8300_GPIO_P6,H8300_GPIO_B4},{H8300_GPIO_P6,H8300_GPIO_B5},
> + {H8300_GPIO_PF,H8300_GPIO_B1},{H8300_GPIO_PF,H8300_GPIO_B2},
> +};
> +/* ISTR = 1 */
> +static const struct irq_pins irq_assign_table1[16]={
> + {H8300_GPIO_P8,H8300_GPIO_B0},{H8300_GPIO_P8,H8300_GPIO_B1},
> + {H8300_GPIO_P8,H8300_GPIO_B2},{H8300_GPIO_P8,H8300_GPIO_B3},
> + {H8300_GPIO_P8,H8300_GPIO_B4},{H8300_GPIO_P8,H8300_GPIO_B5},
> + {H8300_GPIO_PH,H8300_GPIO_B2},{H8300_GPIO_PH,H8300_GPIO_B3},
> + {H8300_GPIO_P2,H8300_GPIO_B0},{H8300_GPIO_P2,H8300_GPIO_B1},
> + {H8300_GPIO_P2,H8300_GPIO_B2},{H8300_GPIO_P2,H8300_GPIO_B3},
> + {H8300_GPIO_P2,H8300_GPIO_B4},{H8300_GPIO_P2,H8300_GPIO_B5},
> + {H8300_GPIO_P2,H8300_GPIO_B6},{H8300_GPIO_P2,H8300_GPIO_B7},
> +};
> +
> +/* IRQ to GPIO pin translation */
> +#define IRQ_GPIO_MAP(irqbit,irq,port,bit) \
> +do { \
> + if (*(volatile unsigned short *)ITSR & irqbit) { \
> + port = irq_assign_table1[irq - EXT_IRQ0].port_no; \
> + bit = irq_assign_table1[irq - EXT_IRQ0].bit_no; \
> + } else { \
> + port = irq_assign_table0[irq - EXT_IRQ0].port_no; \
> + bit = irq_assign_table0[irq - EXT_IRQ0].bit_no; \
> + } \
> +} while(0)
> +
> +int h8300_enable_irq_pin(unsigned int irq)
> +{
> + if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> + unsigned short ptn = 1 << (irq - EXT_IRQ0);
> + unsigned int port_no,bit_no;
> + IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
> + if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
> + return -EBUSY; /* pin already use */
> + H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
> + *(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
> + }
> +
> + return 0;
> +}
> +
> +void h8300_disable_irq_pin(unsigned int irq)
> +{
> + if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
> + /* disable interrupt & release IRQ pin */
> + unsigned short ptn = 1 << (irq - EXT_IRQ0);
> + unsigned short port_no,bit_no;
> + *(volatile unsigned short *)ISR &= ~ptn;
> + *(volatile unsigned short *)IER &= ~ptn;
> + IRQ_GPIO_MAP(ptn, irq, port_no, bit_no);
> + H8300_GPIO_FREE(port_no, bit_no);
> + }
> +}
> diff --git a/include/asm-h8300/hardirq.h b/include/asm-h8300/hardirq.h
> index 18fa793..9d7f7a7 100644
> --- a/include/asm-h8300/hardirq.h
> +++ b/include/asm-h8300/hardirq.h
> @@ -12,6 +12,8 @@ typedef struct {
>
> #include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
>
> +extern void ack_bad_irq(unsigned int irq);
> +
> #define HARDIRQ_BITS 8
>
> /*
> diff --git a/include/asm-h8300/irq.h b/include/asm-h8300/irq.h
> index 56eec28..13d7c60 100644
> --- a/include/asm-h8300/irq.h
> +++ b/include/asm-h8300/irq.h
> @@ -3,7 +3,7 @@
>
> #include <asm/ptrace.h>
>
> -#if defined(__H8300H__)
> +#if defined(CONFIG_CPU_H8300H)
> #define NR_IRQS 64
> #define EXT_IRQ0 12
> #define EXT_IRQ1 13
> @@ -14,14 +14,6 @@
> #define EXT_IRQ6 18
> #define EXT_IRQ7 19
> #define EXT_IRQS 5
> -
> -#include <asm/regs306x.h>
> -#define h8300_clear_isr(irq) \
> -do { \
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ5) \
> - *(volatile unsigned char *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
> -} while(0)
> -
> #define IER_REGS *(volatile unsigned char *)IER
> #endif
> #if defined(CONFIG_CPU_H8S)
> @@ -44,13 +36,6 @@ do { \
> #define EXT_IRQ15 31
> #define EXT_IRQS 15
>
> -#include <asm/regs267x.h>
> -#define h8300_clear_isr(irq) \
> -do { \
> - if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) \
> - *(volatile unsigned short *)ISR &= ~(1 << (irq - EXT_IRQ0)); \
> -} while(0)
> -
> #define IER_REGS *(volatile unsigned short *)IER
> #endif
>
> @@ -59,4 +44,6 @@ static __inline__ int irq_canonicalize(int irq)
> return irq;
> }
>
> +typedef void (*h8300_vector)(void);
> +
> #endif /* _H8300_IRQ_H_ */
> --
> 1.5.4.1
>
> --
> Yoshinori Sato
> <ysato@...rs.sourceforge.jp>
--
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