[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, 31 insertions, 2 deletions

diff --git a/arch/mips/pmc-sierra/yosemite/irq.c b/arch/mips/pmc-sierra/yosemite/irq.c
index f4e2897d9bf7..a1f524fc4c10 100644
--- a/arch/mips/pmc-sierra/yosemite/irq.c
+++ b/arch/mips/pmc-sierra/yosemite/irq.c
@@ -2,6 +2,8 @@
  * Copyright (C) 2003 PMC-Sierra Inc.
  * Author: Manish Lachwani (lachwani@pmc-sierra.com)
  *
+ * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org)
+ *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
  *  Free Software Foundation;  either version 2 of the  License, or (at your
@@ -55,7 +57,6 @@
 #define HYPERTRANSPORT_INTC     0x7a            /* INTC# */
 #define HYPERTRANSPORT_INTD     0x7b            /* INTD# */
 
-extern asmlinkage void titan_handle_int(void);
 extern void jaguar_mailbox_irq(struct pt_regs *);
 
 /*
@@ -125,6 +126,35 @@ asmlinkage void do_extended_irq(struct pt_regs *regs)
 
 }
 
+asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
+{
+        unsigned int cause = read_c0_cause();
+        unsigned int status = read_c0_status();
+        unsigned int pending = cause & status;
+
+        if (pending & STATUSF_IP7) {
+                do_IRQ(7, regs);
+        } else if (pending & STATUSF_IP2) {
+#ifdef CONFIG_HYPERTRANSPORT
+                ll_ht_smp_irq_handler(2, regs);
+#else
+                do_IRQ(2, regs);
+#endif
+        } else if (pending & STATUSF_IP3) {
+                do_IRQ(3, regs);
+        } else if (pending & STATUSF_IP4) {
+                do_IRQ(4, regs);
+        } else if (pending & STATUSF_IP5) {
+#ifdef CONFIG_SMP
+                titan_mailbox_irq(regs);
+#else
+                do_IRQ(5, regs);
+#endif
+        } else if (pending & STATUSF_IP6) {
+                do_IRQ(4, regs);
+        }
+}
+
 #ifdef CONFIG_KGDB
 extern void init_second_port(void);
 #endif
@@ -136,7 +166,6 @@ void __init arch_init_irq(void)
 {
         clear_c0_status(ST0_IM);
 
-        set_except_vector(0, titan_handle_int);
         mips_cpu_irq_init(0);
         rm7k_cpu_irq_init(8);
         rm9k_cpu_irq_init(12);