diff options
Diffstat (limited to 'arch/mips/galileo-boards/ev96100/int-handler.S')
| -rw-r--r-- | arch/mips/galileo-boards/ev96100/int-handler.S | 33 |
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 00000000000..ff4d10a3885 --- /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) |