| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 1999 Ralf Baechle |
| 7 | * Copyright (C) 1999 Silicon Graphics, Inc. |
| 8 | */ |
| 9 | #include <asm/asm.h> |
| 10 | #include <asm/mipsregs.h> |
| 11 | #include <asm/regdef.h> |
| 12 | #include <asm/stackframe.h> |
| 13 | |
| 14 | .text |
| 15 | .align 5 |
| 16 | NESTED(ip27_irq, PT_SIZE, sp) |
| 17 | SAVE_ALL |
| 18 | CLI |
| 19 | |
| 20 | mfc0 s0, CP0_CAUSE |
| 21 | mfc0 t0, CP0_STATUS |
| 22 | and s0, t0 |
| 23 | move a0, sp |
| 24 | PTR_LA ra, ret_from_irq |
| 25 | |
| 26 | /* First check for RT interrupt. */ |
| 27 | andi t0, s0, CAUSEF_IP4 |
| 28 | bnez t0, ip4 |
| 29 | andi t0, s0, CAUSEF_IP2 |
| 30 | bnez t0, ip2 |
| 31 | andi t0, s0, CAUSEF_IP3 |
| 32 | bnez t0, ip3 |
| 33 | andi t0, s0, CAUSEF_IP5 |
| 34 | bnez t0, ip5 |
| 35 | andi t0, s0, CAUSEF_IP6 |
| 36 | bnez t0, ip6 |
| 37 | j ra |
| 38 | |
| 39 | ip2: j ip27_do_irq_mask0 # PI_INT_PEND_0 or CC_PEND_{A|B} |
| 40 | ip3: j ip27_do_irq_mask1 # PI_INT_PEND_1 |
| 41 | ip4: j ip27_rt_timer_interrupt |
| 42 | ip5: j ip27_prof_timer |
| 43 | ip6: j ip27_hub_error |
| 44 | |
| 45 | END(ip27_irq) |