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sh: mach-dreamcast: Convert to sparseirq.

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Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2010-02-02 18:01:55 +09:00
parent 6eb6f98396
commit deb9b22b89
4 changed files with 34 additions and 19 deletions
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3
arch/sh/Kconfig
View File

@ -730,8 +730,7 @@ config GUSA_RB
config SPARSE_IRQ
def_bool y
depends on SUPERH32 && !SH_DREAMCAST && !SH_HIGHLANDER && \
!SH_RTS7751R2D
depends on SUPERH32 && !SH_HIGHLANDER && !SH_RTS7751R2D
help
This enables support for sparse irqs. This is useful in general
as most CPUs have a fairly sparse array of IRQ vectors, which

27
arch/sh/boards/mach-dreamcast/irq.c
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@ -135,3 +135,30 @@ int systemasic_irq_demux(int irq)
/* Not reached */
return irq;
}
void systemasic_irq_init(void)
{
int i, nid = cpu_to_node(boot_cpu_data);
/* Assign all virtual IRQs to the System ASIC int. handler */
for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++) {
unsigned int irq;
irq = create_irq_nr(i, nid);
if (unlikely(irq == 0)) {
pr_err("%s: failed hooking irq %d for systemasic\n",
__func__, i);
return;
}
if (unlikely(irq != i)) {
pr_err("%s: got irq %d but wanted %d, bailing.\n",
__func__, irq, i);
destroy_irq(irq);
return;
}
set_irq_chip_and_handler(i, &systemasic_int,
handle_level_irq);
}
}

18
arch/sh/boards/mach-dreamcast/setup.c
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@ -28,25 +28,8 @@
#include <asm/machvec.h>
#include <mach/sysasic.h>
extern struct irq_chip systemasic_int;
extern void aica_time_init(void);
extern int systemasic_irq_demux(int);
static void __init dreamcast_setup(char **cmdline_p)
{
int i;
/* Mask all hardware events */
/* XXX */
/* Acknowledge any previous events */
/* XXX */
/* Assign all virtual IRQs to the System ASIC int. handler */
for (i = HW_EVENT_IRQ_BASE; i < HW_EVENT_IRQ_MAX; i++)
set_irq_chip_and_handler(i, &systemasic_int,
handle_level_irq);
board_time_init = aica_time_init;
}
@ -54,4 +37,5 @@ static struct sh_machine_vector mv_dreamcast __initmv = {
.mv_name = "Sega Dreamcast",
.mv_setup = dreamcast_setup,
.mv_irq_demux = systemasic_irq_demux,
.mv_init_irq = systemasic_irq_init,
};

5
arch/sh/include/mach-dreamcast/mach/sysasic.h
View File

@ -39,5 +39,10 @@
#define HW_EVENT_IRQ_MAX (HW_EVENT_IRQ_BASE + 95)
/* arch/sh/boards/mach-dreamcast/irq.c */
extern int systemasic_irq_demux(int);
extern void systemasic_irq_init(void);
extern void aica_time_init(void);
#endif /* __ASM_SH_DREAMCAST_SYSASIC_H */