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authorPaul Mundt <lethal@linux-sh.org>2010-02-02 18:01:55 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-02-02 18:01:55 +0900
commitdeb9b22b8968fa0166d89c8ad1346e816cf1aec4 (patch)
treea8f2a46d7498182c11bda07916b4b954c8541a8a /arch/sh
parentsh: hd6446x: Convert to sparseirq. (diff)
downloadlinux-dev-deb9b22b8968fa0166d89c8ad1346e816cf1aec4.tar.xz
linux-dev-deb9b22b8968fa0166d89c8ad1346e816cf1aec4.zip
sh: mach-dreamcast: Convert to sparseirq.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/Kconfig3
-rw-r--r--arch/sh/boards/mach-dreamcast/irq.c27
-rw-r--r--arch/sh/boards/mach-dreamcast/setup.c18
-rw-r--r--arch/sh/include/mach-dreamcast/mach/sysasic.h5
4 files changed, 34 insertions, 19 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 9e565d962dc0..3b3c036cbc30 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -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
diff --git a/arch/sh/boards/mach-dreamcast/irq.c b/arch/sh/boards/mach-dreamcast/irq.c
index f55fc8e795e9..d932667410ab 100644
--- a/arch/sh/boards/mach-dreamcast/irq.c
+++ b/arch/sh/boards/mach-dreamcast/irq.c
@@ -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);
+ }
+}
diff --git a/arch/sh/boards/mach-dreamcast/setup.c b/arch/sh/boards/mach-dreamcast/setup.c
index a4b7402d6176..ad1a4db72e04 100644
--- a/arch/sh/boards/mach-dreamcast/setup.c
+++ b/arch/sh/boards/mach-dreamcast/setup.c
@@ -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,
};
diff --git a/arch/sh/include/mach-dreamcast/mach/sysasic.h b/arch/sh/include/mach-dreamcast/mach/sysasic.h
index f33426608a87..58f710e1ebc2 100644
--- a/arch/sh/include/mach-dreamcast/mach/sysasic.h
+++ b/arch/sh/include/mach-dreamcast/mach/sysasic.h
@@ -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 */