X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fmips%2Fdec%2Fint-handler.S;h=e8ec93e33fe60cc05eb0c7503992cbca38581d7b;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=3b379099321999b789643de2aa555206d640b883;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/mips/dec/int-handler.S b/arch/mips/dec/int-handler.S
index 3b3790993..e8ec93e33 100644
--- a/arch/mips/dec/int-handler.S
+++ b/arch/mips/dec/int-handler.S
@@ -2,9 +2,9 @@
  * arch/mips/dec/int-handler.S
  *
  * Copyright (C) 1995, 1996, 1997 Paul M. Antoine and Harald Koerfgen
- * Copyright (C) 2000, 2001, 2002, 2003  Maciej W. Rozycki
+ * Copyright (C) 2000, 2001, 2002, 2003, 2005  Maciej W. Rozycki
  *
- * Written by Ralf Baechle and Andreas Busse, modified for DECStation
+ * Written by Ralf Baechle and Andreas Busse, modified for DECstation
  * support by Paul Antoine and Harald Koerfgen.
  *
  * completly rewritten:
@@ -14,11 +14,12 @@
  * by Maciej W. Rozycki.
  */
 #include <linux/config.h>
+
+#include <asm/addrspace.h>
 #include <asm/asm.h>
-#include <asm/regdef.h>
 #include <asm/mipsregs.h>
+#include <asm/regdef.h>
 #include <asm/stackframe.h>
-#include <asm/addrspace.h>
 
 #include <asm/dec/interrupts.h>
 #include <asm/dec/ioasic_addrs.h>
@@ -28,11 +29,14 @@
 #include <asm/dec/kn02xa.h>
 #include <asm/dec/kn03.h>
 
+#define KN02_CSR_BASE		CKSEG1ADDR(KN02_SLOT_BASE + KN02_CSR)
+#define KN02XA_IOASIC_BASE	CKSEG1ADDR(KN02XA_SLOT_BASE + IOASIC_IOCTL)
+#define KN03_IOASIC_BASE	CKSEG1ADDR(KN03_SLOT_BASE + IOASIC_IOCTL)
 
 		.text
 		.set	noreorder
 /*
- * decstation_handle_int: Interrupt handler for DECStations
+ * plat_irq_dispatch: Interrupt handler for DECstations
  *
  * We follow the model in the Indy interrupt code by David Miller, where he
  * says: a lot of complication here is taken away because:
@@ -48,7 +52,7 @@
  * 3) Linux only thinks in terms of all IRQs on or all IRQs
  *    off, nothing in between like BSD spl() brain-damage.
  *
- * Furthermore, the IRQs on the DECStations look basically (barring
+ * Furthermore, the IRQs on the DECstations look basically (barring
  * software IRQs which we don't use at all) like...
  *
  * DS2100/3100's, aka kn01, aka Pmax:
@@ -61,7 +65,7 @@
  *             3        Lance Ethernet
  *             4        DZ11 serial
  *             5        RTC
- *             6        Memory Controller
+ *             6        Memory Controller & Video
  *             7        FPU
  *
  * DS5000/200, aka kn02, aka 3max:
@@ -121,11 +125,7 @@
  * just take another exception, big deal.
  */
 		.align	5
-		NESTED(decstation_handle_int, PT_SIZE, ra)
-		.set	noat
-		SAVE_ALL
-		CLI				# TEST: interrupts should be off
-		.set	at
+		NESTED(plat_irq_dispatch, PT_SIZE, ra)
 		.set	noreorder
 
 		/*
@@ -133,7 +133,7 @@
 		 */
 		mfc0	t0,CP0_CAUSE		# get pending interrupts
 		mfc0	t1,CP0_STATUS
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
 		lw	t2,cpu_fpu_mask
 #endif
 		andi	t0,ST0_IM		# CAUSE.CE may be non-zero!
@@ -141,7 +141,7 @@
 
 		beqz	t0,spurious
 
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
 		 and	t2,t0
 		bnez	t2,fpu			# handle FPU immediately
 #endif
@@ -271,16 +271,18 @@ handle_it:
 		j	ret_from_irq
 		 nop
 
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
 fpu:
 		j	handle_fpe_int
 		 nop
 #endif
 
 spurious:
-		j	spurious_interrupt
+		jal	spurious_interrupt
+		 nop
+		j	ret_from_irq
 		 nop
-		END(decstation_handle_int)
+		END(plat_irq_dispatch)
 
 /*
  * Generic unimplemented interrupt routines -- cpu_mask_nr_tbl