[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, 8 insertions, 6 deletions

diff --git a/arch/mips/lasat/interrupt.c b/arch/mips/lasat/interrupt.c
index 852a41901a5e..2d3472b21ebb 100644
--- a/arch/mips/lasat/interrupt.c
+++ b/arch/mips/lasat/interrupt.c
@@ -27,14 +27,13 @@
 #include <asm/bootinfo.h>
 #include <asm/irq.h>
 #include <asm/lasat/lasatint.h>
+#include <asm/time.h>
 #include <asm/gdb-stub.h>
 
 static volatile int *lasat_int_status = NULL;
 static volatile int *lasat_int_mask = NULL;
 static volatile int lasat_int_mask_shift;
 
-extern asmlinkage void lasatIRQ(void);
-
 void disable_lasat_irq(unsigned int irq_nr)
 {
         unsigned long flags;
@@ -109,11 +108,17 @@ static unsigned long get_int_status_200(void)
         return int_status;
 }
 
-void lasat_hw0_irqdispatch(struct pt_regs *regs)
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
 {
         unsigned long int_status;
+        unsigned int cause = read_c0_cause();
         int irq;
 
+        if (cause & CAUSEF_IP7) {       /* R4000 count / compare IRQ */
+                ll_timer_interrupt(7, regs);
+                return;
+        }
+
         int_status = get_int_status();
 
         /* if int_status == 0, then the interrupt has already been cleared */
@@ -147,9 +152,6 @@ void __init arch_init_irq(void)
                 panic("arch_init_irq: mips_machtype incorrect");
         }
 
-        /* Now safe to set the exception vector. */
-        set_except_vector(0, lasatIRQ);
-
         for (i = 0; i <= LASATINT_END; i++) {
                 irq_desc[i].status      = IRQ_DISABLED;
                 irq_desc[i].action      = 0;