[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>
diff --git a/arch/mips/tx4938/common/irq.c b/arch/mips/tx4938/common/irq.c
index 4f90d7f..8738051 100644
--- a/arch/mips/tx4938/common/irq.c
+++ b/arch/mips/tx4938/common/irq.c
@@ -392,11 +392,8 @@
void __init
tx4938_irq_init(void)
{
- extern asmlinkage void tx4938_irq_handler(void);
-
tx4938_irq_cp0_init();
tx4938_irq_pic_init();
- set_except_vector(0, tx4938_irq_handler);
return;
}
@@ -422,3 +419,21 @@
wbflush();
return (sw_irq);
}
+
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+ unsigned int pending = read_c0_cause() & read_c0_status();
+
+ if (pending & STATUSF_IP7)
+ do_IRQ(TX4938_IRQ_CPU_TIMER, regs);
+ else if (pending & STATUSF_IP2) {
+ int irq = tx4938_irq_nested();
+ if (irq)
+ do_IRQ(irq, regs);
+ else
+ spurious_interrupt(regs);
+ } else if (pending & STATUSF_IP1)
+ do_IRQ(TX4938_IRQ_USER1, regs);
+ else if (pending & STATUSF_IP0)
+ do_IRQ(TX4938_IRQ_USER0, regs);
+}