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 <asm/registers.h> 23 #include <linux/irq.h> 24 #include <linux/hardirq.h> 25 26 /* 27 * show_regs - print pt_regs structure 28 * @regs: pointer to pt_regs 29 * 30 * To-do: add all the accessor definitions to registers.h 31 * 32 * Will make this routine a lot easier to write. 33 */ 34 void show_regs(struct pt_regs *regs) 35 { 36 show_regs_print_info(KERN_EMERG); 37 38 printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", 39 regs->restart_r0, regs->syscall_nr); 40 printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); 41 printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", 42 regs->lc0, regs->sa0, regs->m0); 43 printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", 44 regs->lc1, regs->sa1, regs->m1); 45 printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", 46 regs->gp, regs->ugp, regs->usr); 47 printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n", 48 regs->cs0, regs->cs1); 49 printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, 50 regs->r01, 51 regs->r02, 52 regs->r03); 53 printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, 54 regs->r05, 55 regs->r06, 56 regs->r07); 57 printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, 58 regs->r09, 59 regs->r10, 60 regs->r11); 61 printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, 62 regs->r13, 63 regs->r14, 64 regs->r15); 65 printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, 66 regs->r17, 67 regs->r18, 68 regs->r19); 69 printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, 70 regs->r21, 71 regs->r22, 72 regs->r23); 73 printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, 74 regs->r25, 75 regs->r26, 76 regs->r27); 77 printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, 78 regs->r29, 79 regs->r30, 80 regs->r31); 81 82 printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", 83 pt_elr(regs), pt_cause(regs), user_mode(regs)); 84 printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", 85 pt_psp(regs), pt_badva(regs), ints_enabled(regs)); 86 } 87 88 void dummy_handler(struct pt_regs *regs) 89 { 90 unsigned int elr = pt_elr(regs); 91 printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); 92 } 93 94 95 void arch_do_IRQ(struct pt_regs *regs) 96 { 97 int irq = pt_cause(regs); 98 struct pt_regs *old_regs = set_irq_regs(regs); 99 100 irq_enter(); 101 generic_handle_irq(irq); 102 irq_exit(); 103 set_irq_regs(old_regs); 104 } 105