summaryrefslogtreecommitdiffstats
path: root/arch/mips/galileo-boards/ev96100/int-handler.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/galileo-boards/ev96100/int-handler.S')
-rw-r--r--arch/mips/galileo-boards/ev96100/int-handler.S33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/mips/galileo-boards/ev96100/int-handler.S b/arch/mips/galileo-boards/ev96100/int-handler.S
new file mode 100644
index 0000000..ff4d10a
--- /dev/null
+++ b/arch/mips/galileo-boards/ev96100/int-handler.S
@@ -0,0 +1,33 @@
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+ .set noat
+ .align 5
+
+NESTED(ev96100IRQ, PT_SIZE, sp)
+ SAVE_ALL
+ CLI # Important: mark KERNEL mode !
+
+ mfc0 t0, CP0_CAUSE # get pending interrupts
+ mfc0 t1, CP0_STATUS # get enabled interrupts
+ and t0, t1 # isolate allowed ones
+
+ # FIX ME add R7000 extensions
+ andi t0,0xff00 # isolate pending bits
+ andi a0, t0, CAUSEF_IP7
+ beq a0, zero, 1f
+ move a0, sp
+ jal mips_timer_interrupt
+ j ret_from_irq
+
+1: beqz t0, 3f # spurious interrupt
+
+ move a0, t0
+ move a1, sp
+ jal ev96100_cpu_irq
+ j ret_from_irq
+
+3: j spurious_interrupt
+ END(ev96100IRQ)
OpenPOWER on IntegriCloud