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authorRalf Baechle <ralf@linux-mips.org>2006-04-03 17:56:36 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-04-19 04:14:21 +0200
commite4ac58afdfac792c0583af30dbd9eae53e24c78b (patch)
tree7517bef2c515fc630e4d3d238867b91cde96f558 /arch/mips/galileo-boards/ev96100/irq.c
parentd35d473c25d43d7db3e5e18b66d558d2a631cca8 (diff)
downloadop-kernel-dev-e4ac58afdfac792c0583af30dbd9eae53e24c78b.zip
op-kernel-dev-e4ac58afdfac792c0583af30dbd9eae53e24c78b.tar.gz
[MIPS] Rewrite all the assembler interrupt handlers to C.
Saves like 1,600 lines of code, is way easier to debug, compilers frequently do a better job than the cut and paste type of handlers many boards had. And finally having all the stuff done in a single place also means alot of bug potencial for the MT ASE is gone. The only surviving handler in assembler is the DECstation one; I hope Maciej will rewrite it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/galileo-boards/ev96100/irq.c')
-rw-r--r--arch/mips/galileo-boards/ev96100/irq.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/mips/galileo-boards/ev96100/irq.c b/arch/mips/galileo-boards/ev96100/irq.c
index 383801d..ee5d672 100644
--- a/arch/mips/galileo-boards/ev96100/irq.c
+++ b/arch/mips/galileo-boards/ev96100/irq.c
@@ -40,8 +40,6 @@
#include <linux/interrupt.h>
#include <asm/irq_cpu.h>
-extern asmlinkage void ev96100IRQ(void);
-
static inline unsigned int ffz8(unsigned int word)
{
unsigned long k;
@@ -54,13 +52,26 @@ static inline unsigned int ffz8(unsigned int word)
return k;
}
+extern void mips_timer_interrupt(struct pt_regs *regs);
+
asmlinkage void ev96100_cpu_irq(unsigned int pending, struct pt_regs *regs)
{
do_IRQ(ffz8(pending >> 8), regs);
}
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+ if (pending & CAUSEF_IP7)
+ mips_timer_interrupt(regs);
+ else if (pending)
+ ev96100_cpu_irq(pending, regs);
+ else
+ spurious_interrupt(regs);
+}
+
void __init arch_init_irq(void)
{
- set_except_vector(0, ev96100IRQ);
mips_cpu_irq_init(0);
}
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