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 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 printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", 37 regs->restart_r0, regs->syscall_nr); 38 printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); 39 printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", 40 regs->lc0, regs->sa0, regs->m0); 41 printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", 42 regs->lc1, regs->sa1, regs->m1); 43 printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", 44 regs->gp, regs->ugp, regs->usr); 45 printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, 46 regs->r01, 47 regs->r02, 48 regs->r03); 49 printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, 50 regs->r05, 51 regs->r06, 52 regs->r07); 53 printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, 54 regs->r09, 55 regs->r10, 56 regs->r11); 57 printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, 58 regs->r13, 59 regs->r14, 60 regs->r15); 61 printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, 62 regs->r17, 63 regs->r18, 64 regs->r19); 65 printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, 66 regs->r21, 67 regs->r22, 68 regs->r23); 69 printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, 70 regs->r25, 71 regs->r26, 72 regs->r27); 73 printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, 74 regs->r29, 75 regs->r30, 76 regs->r31); 77 78 printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", 79 pt_elr(regs), pt_cause(regs), user_mode(regs)); 80 printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", 81 pt_psp(regs), pt_badva(regs), ints_enabled(regs)); 82 } 83 84 void dummy_handler(struct pt_regs *regs) 85 { 86 unsigned int elr = pt_elr(regs); 87 printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); 88 } 89 90 91 void arch_do_IRQ(struct pt_regs *regs) 92 { 93 int irq = pt_cause(regs); 94 struct pt_regs *old_regs = set_irq_regs(regs); 95 96 irq_enter(); 97 generic_handle_irq(irq); 98 irq_exit(); 99 set_irq_regs(old_regs); 100 } 101