1 /* 2 * Mostly IRQ support for Hexagon 3 * 4 * Copyright (c) 2010-2012, The Linux Foundation. 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 <linux/sched/debug.h> 23 #include <asm/registers.h> 24 #include <linux/irq.h> 25 #include <linux/hardirq.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 show_regs_print_info(KERN_EMERG); 38 39 printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", 40 regs->restart_r0, regs->syscall_nr); 41 printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); 42 printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", 43 regs->lc0, regs->sa0, regs->m0); 44 printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", 45 regs->lc1, regs->sa1, regs->m1); 46 printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", 47 regs->gp, regs->ugp, regs->usr); 48 printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n", 49 regs->cs0, regs->cs1); 50 printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, 51 regs->r01, 52 regs->r02, 53 regs->r03); 54 printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, 55 regs->r05, 56 regs->r06, 57 regs->r07); 58 printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, 59 regs->r09, 60 regs->r10, 61 regs->r11); 62 printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, 63 regs->r13, 64 regs->r14, 65 regs->r15); 66 printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, 67 regs->r17, 68 regs->r18, 69 regs->r19); 70 printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, 71 regs->r21, 72 regs->r22, 73 regs->r23); 74 printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, 75 regs->r25, 76 regs->r26, 77 regs->r27); 78 printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, 79 regs->r29, 80 regs->r30, 81 regs->r31); 82 83 printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", 84 pt_elr(regs), pt_cause(regs), user_mode(regs)); 85 printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", 86 pt_psp(regs), pt_badva(regs), ints_enabled(regs)); 87 } 88 89 void dummy_handler(struct pt_regs *regs) 90 { 91 unsigned int elr = pt_elr(regs); 92 printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); 93 } 94 95 96 void arch_do_IRQ(struct pt_regs *regs) 97 { 98 int irq = pt_cause(regs); 99 struct pt_regs *old_regs = set_irq_regs(regs); 100 101 irq_enter(); 102 generic_handle_irq(irq); 103 irq_exit(); 104 set_irq_regs(old_regs); 105 } 106