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m68k/apollo: Convert Apollo to genirq 

Replace the custom user vector interrupt handler that calls do_IRQ() and
does an EOI by handle_fasteoi_irq().

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Peter De Schrijver <p2@debian.org>
hifive-unleashed-5.1
Geert Uytterhoeven 2011-08-18 14:45:57 +02:00
parent 6c490c4da4
commit bc7485acd0
2 changed files with 23 additions and 3 deletions
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1
arch/m68k/Kconfig
View File

@ -87,7 +87,6 @@ config MMU_SUN3
config USE_GENERIC_HARDIRQS
bool "Use genirq"
depends on MMU
depends on !APOLLO
depends on !SUN3X
depends on !Q40
depends on !SUN3

25
arch/m68k/apollo/dn_ints.c
View File

@ -1,9 +1,14 @@
#include <linux/interrupt.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#else
#include <asm/irq.h>
#endif
#include <asm/traps.h>
#include <asm/apollohw.h>
#ifndef CONFIG_GENERIC_HARDIRQS
void dn_process_int(unsigned int irq, struct pt_regs *fp)
{
do_IRQ(irq, fp);
@ -11,6 +16,7 @@ void dn_process_int(unsigned int irq, struct pt_regs *fp)
*(volatile unsigned char *)(pica)=0x20;
*(volatile unsigned char *)(picb)=0x20;
}
#endif
unsigned int apollo_irq_startup(struct irq_data *data)
{
@ -33,16 +39,31 @@ void apollo_irq_shutdown(struct irq_data *data)
*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
}
#ifdef CONFIG_GENERIC_HARDIRQS
void apollo_irq_eoi(struct irq_data *data)
{
*(volatile unsigned char *)(pica) = 0x20;
*(volatile unsigned char *)(picb) = 0x20;
}
#endif
static struct irq_chip apollo_irq_chip = {
.name = "apollo",
.irq_startup = apollo_irq_startup,
.irq_shutdown = apollo_irq_shutdown,
#ifdef CONFIG_GENERIC_HARDIRQS
.irq_eoi = apollo_irq_eoi,
#endif
};
void __init dn_init_IRQ(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
m68k_setup_user_interrupt(VEC_USER + 96, 16, NULL);
#else
m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
m68k_setup_irq_controller(&apollo_irq_chip, handle_simple_irq,
#endif
m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
IRQ_APOLLO, 16);
}