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h8300: IRQ handling update

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- add missing file and declare.
- remove unused file and macros.
- some cleanup.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yoshinori Sato 2008-02-23 15:23:59 -08:00 committed by Linus Torvalds
parent 4223cc3436
commit 5cc265a5de
7 changed files with 94 additions and 327 deletions
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4
arch/h8300/kernel/irq.c
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@ -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();

2
arch/h8300/platform/h8300h/Makefile
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@ -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

82
arch/h8300/platform/h8300h/irq.c Normal file
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@ -0,0 +1,82 @@
/*
* Interrupt handling H8/300H depend.
* 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>
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;
}
}

304
arch/h8300/platform/h8s/ints.c
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@ -1,304 +0,0 @@
/*
* linux/arch/h8300/platform/h8s/ints.c
*
* Yoshinori Sato <ysato@users.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@rt-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);

8
arch/h8300/platform/h8s/ints_h8s.c → arch/h8300/platform/h8s/irq.c
View File

@ -27,11 +27,11 @@ const int __initdata h8300_saved_vectors[]={
};
/* trap entry table */
const unsigned long __initdata h8300_trap_table[NR_TRAPS]={
const H8300_VECTOR __initdata h8300_trap_table[] = {
0,0,0,0,0,
(unsigned long)trace_break, /* TRACE */
trace_break, /* TRACE */
0,0,
(unsigned long)system_call, /* TRAPA #0 */
system_call, /* TRAPA #0 */
0,0,0,0,0,0,0
};
@ -50,7 +50,7 @@ static const struct irq_pins irq_assign_table0[16]={
{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},

2
include/asm-h8300/hardirq.h
View File

@ -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
/*

19
include/asm-h8300/irq.h
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@ -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_ */