| Richard Kuo | e49ee29 | 2011-10-31 18:39:14 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Mostly IRQ support for Hexagon |
| 3 | * |
| 4 | * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 and |
| 8 | * only version 2 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 18 | * 02110-1301, USA. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/kernel.h> |
| 22 | #include <asm/registers.h> |
| 23 | #include <linux/irq.h> |
| 24 | #include <linux/hardirq.h> |
| 25 | #include <asm/system.h> |
| 26 | |
| 27 | /* |
| 28 | * show_regs - print pt_regs structure |
| 29 | * @regs: pointer to pt_regs |
| 30 | * |
| 31 | * To-do: add all the accessor definitions to registers.h |
| 32 | * |
| 33 | * Will make this routine a lot easier to write. |
| 34 | */ |
| 35 | void show_regs(struct pt_regs *regs) |
| 36 | { |
| 37 | printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", |
| 38 | regs->restart_r0, regs->syscall_nr); |
| 39 | printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); |
| 40 | printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", |
| 41 | regs->lc0, regs->sa0, regs->m0); |
| 42 | printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", |
| 43 | regs->lc1, regs->sa1, regs->m1); |
| 44 | printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", |
| 45 | regs->gp, regs->ugp, regs->usr); |
| 46 | printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, |
| 47 | regs->r01, |
| 48 | regs->r02, |
| 49 | regs->r03); |
| 50 | printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, |
| 51 | regs->r05, |
| 52 | regs->r06, |
| 53 | regs->r07); |
| 54 | printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, |
| 55 | regs->r09, |
| 56 | regs->r10, |
| 57 | regs->r11); |
| 58 | printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, |
| 59 | regs->r13, |
| 60 | regs->r14, |
| 61 | regs->r15); |
| 62 | printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, |
| 63 | regs->r17, |
| 64 | regs->r18, |
| 65 | regs->r19); |
| 66 | printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, |
| 67 | regs->r21, |
| 68 | regs->r22, |
| 69 | regs->r23); |
| 70 | printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, |
| 71 | regs->r25, |
| 72 | regs->r26, |
| 73 | regs->r27); |
| 74 | printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, |
| 75 | regs->r29, |
| 76 | regs->r30, |
| 77 | regs->r31); |
| 78 | |
| 79 | printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", |
| 80 | pt_elr(regs), pt_cause(regs), user_mode(regs)); |
| 81 | printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", |
| 82 | pt_psp(regs), pt_badva(regs), ints_enabled(regs)); |
| 83 | } |
| 84 | |
| 85 | void dummy_handler(struct pt_regs *regs) |
| 86 | { |
| 87 | unsigned int elr = pt_elr(regs); |
| 88 | printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | void arch_do_IRQ(struct pt_regs *regs) |
| 93 | { |
| 94 | int irq = pt_cause(regs); |
| 95 | struct pt_regs *old_regs = set_irq_regs(regs); |
| 96 | |
| 97 | irq_enter(); |
| 98 | generic_handle_irq(irq); |
| 99 | irq_exit(); |
| 100 | set_irq_regs(old_regs); |
| 101 | } |