diff options
Diffstat (limited to 'arch/mips/sgi-ip27/ip27-irq-glue.S')
| -rw-r--r-- | arch/mips/sgi-ip27/ip27-irq-glue.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/mips/sgi-ip27/ip27-irq-glue.S b/arch/mips/sgi-ip27/ip27-irq-glue.S new file mode 100644 index 00000000000..c304df715e0 --- /dev/null +++ b/arch/mips/sgi-ip27/ip27-irq-glue.S @@ -0,0 +1,45 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1999 Ralf Baechle + * Copyright (C) 1999 Silicon Graphics, Inc. + */ +#include <asm/asm.h> +#include <asm/mipsregs.h> +#include <asm/regdef.h> +#include <asm/stackframe.h> + + .text + .align 5 +NESTED(ip27_irq, PT_SIZE, sp) + SAVE_ALL + CLI + + mfc0 s0, CP0_CAUSE + mfc0 t0, CP0_STATUS + and s0, t0 + move a0, sp + PTR_LA ra, ret_from_irq + + /* First check for RT interrupt. */ + andi t0, s0, CAUSEF_IP4 + bnez t0, ip4 + andi t0, s0, CAUSEF_IP2 + bnez t0, ip2 + andi t0, s0, CAUSEF_IP3 + bnez t0, ip3 + andi t0, s0, CAUSEF_IP5 + bnez t0, ip5 + andi t0, s0, CAUSEF_IP6 + bnez t0, ip6 + j ra + +ip2: j ip27_do_irq_mask0 # PI_INT_PEND_0 or CC_PEND_{A|B} +ip3: j ip27_do_irq_mask1 # PI_INT_PEND_1 +ip4: j ip27_rt_timer_interrupt +ip5: j ip27_prof_timer +ip6: j ip27_hub_error + + END(ip27_irq) |