projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Copyright (C) 2000 RidgeRun, Inc. | |
| 3 | * Author: RidgeRun, Inc. | |
| 4 | * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com | |
| 5 | * | |
| 6 | * Copyright 2001 MontaVista Software Inc. | |
| 7 | * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net | |
| 8 | * Copyright (C) 2000, 2001, 2003 Ralf Baechle (ralf@gnu.org) | |
| 9 | * | |
| 10 | * This program is free software; you can redistribute it and/or modify it | |
| 11 | * under the terms of the GNU General Public License as published by the | |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 13 | * option) any later version. | |
| 14 | * | |
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 16 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 17 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
| 18 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
| 21 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
| 22 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 | * | |
| 26 | * You should have received a copy of the GNU General Public License along | |
| 27 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 28 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 29 | * | |
| 30 | */ | |
| 31 | #include <linux/errno.h> | |
| 32 | #include <linux/init.h> | |
| 33 | #include <linux/kernel_stat.h> | |
| 34 | #include <linux/module.h> | |
| 35 | #include <linux/signal.h> | |
| 36 | #include <linux/sched.h> | |
| 37 | #include <linux/types.h> | |
| 38 | #include <linux/interrupt.h> | |
| 39 | #include <linux/ioport.h> | |
| 40 | #include <linux/timex.h> | |
| 41 | #include <linux/slab.h> | |
| 42 | #include <linux/random.h> | |
| 43 | #include <linux/bitops.h> | |
| 44 | #include <asm/bootinfo.h> | |
| 45 | #include <asm/io.h> | |
| 46 | #include <asm/irq.h> | |
| 47 | #include <asm/irq_cpu.h> | |
| 48 | #include <asm/mipsregs.h> | |
| 49 | #include <asm/system.h> | |
| 50 | ||
| e4ac58af RB |
51 | asmlinkage void plat_irq_dispatch(struct pt_regs *regs) |
| 52 | { | |
| 53 | unsigned int pending = read_c0_status() & read_c0_cause(); | |
| 54 | ||
| 55 | if (pending & STATUSF_IP2) /* int0 hardware line */ | |
| 56 | do_IRQ(2, regs); | |
| 57 | else if (pending & STATUSF_IP3) /* int1 hardware line */ | |
| 58 | do_IRQ(3, regs); | |
| 59 | else if (pending & STATUSF_IP4) /* int2 hardware line */ | |
| 60 | do_IRQ(4, regs); | |
| 61 | else if (pending & STATUSF_IP5) /* int3 hardware line */ | |
| 62 | do_IRQ(5, regs); | |
| 63 | else if (pending & STATUSF_IP6) /* int4 hardware line */ | |
| 64 | do_IRQ(6, regs); | |
| 65 | else if (pending & STATUSF_IP7) /* cpu timer */ | |
| 66 | do_IRQ(7, regs); | |
| 67 | else { | |
| 68 | /* | |
| 69 | * Now look at the extended interrupts | |
| 70 | */ | |
| 71 | pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16; | |
| 72 | ||
| 73 | if (pending & STATUSF_IP8) /* int6 hardware line */ | |
| 74 | do_IRQ(8, regs); | |
| 75 | else if (pending & STATUSF_IP9) /* int7 hardware line */ | |
| 76 | do_IRQ(9, regs); | |
| 77 | else if (pending & STATUSF_IP10) /* int8 hardware line */ | |
| 78 | do_IRQ(10, regs); | |
| 79 | else if (pending & STATUSF_IP11) /* int9 hardware line */ | |
| 80 | do_IRQ(11, regs); | |
| 81 | } | |
| 82 | } | |
| 1da177e4 LT |
83 | |
| 84 | void __init arch_init_irq(void) | |
| 85 | { | |
| 86 | /* | |
| 87 | * Clear all of the interrupts while we change the able around a bit. | |
| 88 | * int-handler is not on bootstrap | |
| 89 | */ | |
| 90 | clear_c0_status(ST0_IM); | |
| 91 | local_irq_disable(); | |
| 92 | ||
| 1da177e4 LT |
93 | mips_cpu_irq_init(0); |
| 94 | rm7k_cpu_irq_init(8); | |
| 95 | } |