[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>

1 files changed, 12 insertions, 3 deletions

diff --git a/arch/mips/ite-boards/generic/irq.c b/arch/mips/ite-boards/generic/irq.c
index 8c1cdfcd4284..77be7216bdd0 100644
--- a/arch/mips/ite-boards/generic/irq.c
+++ b/arch/mips/ite-boards/generic/irq.c
@@ -64,7 +64,6 @@
 
 extern void set_debug_traps(void);
 extern void mips_timer_interrupt(int irq, struct pt_regs *regs);
-extern asmlinkage void it8172_IRQ(void);
 
 struct it8172_intc_regs volatile *it8172_hw0_icregs =
         (struct it8172_intc_regs volatile *)(KSEG1ADDR(IT8172_PCI_IO_BASE + IT_INTC_BASE));
@@ -178,8 +177,6 @@ void __init arch_init_irq(void)
         int i;
         unsigned long flags;
 
-        set_except_vector(0, it8172_IRQ);
-
         /* mask all interrupts */
         it8172_hw0_icregs->lb_mask  = 0xffff;
         it8172_hw0_icregs->lpc_mask = 0xffff;
@@ -279,6 +276,18 @@ void it8172_hw0_irqdispatch(struct pt_regs *regs)
         do_IRQ(irq, regs);
 }
 
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+        unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
+
+        if (!pending)
+                mips_spurious_interrupt(regs);
+        else if (pending & CAUSEF_IP7)
+                ll_timer_interrupt(127, regs);
+        else if (pending & CAUSEF_IP2)
+                it8172_hw0_irqdispatch(regs);
+}
+
 void show_pending_irqs(void)
 {
         fputs("intstatus:  ");