| /* |
| * 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) |