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sh: add interrupt ack code to sh4a

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This patch is based on interrupt acknowledge code for external
interrupt sources on sh3 processors and adds on sh4a processors.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Yoshihiro Shimoda
2008-07-04 12:37:12 +09:00
committed by Paul Mundt
parent f12ae6bc4a
commit 6bdfb22a8e
8 changed files with 76 additions and 28 deletions
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31
arch/sh/kernel/cpu/irq/intc.c
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@@ -62,7 +62,7 @@ struct intc_desc_int {
#endif
static unsigned int intc_prio_level[NR_IRQS]; /* for now */
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
static unsigned long ack_handle[NR_IRQS];
#endif
@@ -231,7 +231,7 @@ static void intc_disable(unsigned int irq)
}
}
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
static void intc_mask_ack(unsigned int irq)
{
struct intc_desc_int *d = get_intc_desc(irq);
@@ -244,8 +244,23 @@ static void intc_mask_ack(unsigned int irq)
if (handle) {
addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
ctrl_inb(addr);
ctrl_outb(0x3f ^ set_field(0, 1, handle), addr);
switch (_INTC_FN(handle)) {
case REG_FN_MODIFY_BASE + 0: /* 8bit */
ctrl_inb(addr);
ctrl_outb(0xff ^ set_field(0, 1, handle), addr);
break;
case REG_FN_MODIFY_BASE + 1: /* 16bit */
ctrl_inw(addr);
ctrl_outw(0xffff ^ set_field(0, 1, handle), addr);
break;
case REG_FN_MODIFY_BASE + 3: /* 32bit */
ctrl_inl(addr);
ctrl_outl(0xffffffff ^ set_field(0, 1, handle), addr);
break;
default:
BUG();
break;
}
}
}
#endif
@@ -466,7 +481,7 @@ static unsigned int __init intc_prio_data(struct intc_desc *desc,
return 0;
}
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
static unsigned int __init intc_ack_data(struct intc_desc *desc,
struct intc_desc_int *d,
intc_enum enum_id)
@@ -601,7 +616,7 @@ static void __init intc_register_irq(struct intc_desc *desc,
/* irq should be disabled by default */
d->chip.mask(irq);
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
if (desc->ack_regs)
ack_handle[irq] = intc_ack_data(desc, d, enum_id);
#endif
@@ -635,7 +650,7 @@ void __init register_intc_controller(struct intc_desc *desc)
d->nr_reg += desc->prio_regs ? desc->nr_prio_regs * 2 : 0;
d->nr_reg += desc->sense_regs ? desc->nr_sense_regs : 0;
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
d->nr_reg += desc->ack_regs ? desc->nr_ack_regs : 0;
#endif
d->reg = alloc_bootmem(d->nr_reg * sizeof(*d->reg));
@@ -676,7 +691,7 @@ void __init register_intc_controller(struct intc_desc *desc)
d->chip.mask_ack = intc_disable;
d->chip.set_type = intc_set_sense;
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SH3) || defined(CONFIG_CPU_SH4A)
if (desc->ack_regs) {
for (i = 0; i < desc->nr_ack_regs; i++)
k += save_reg(d, k, desc->ack_regs[i].set_reg, 0);