1e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo/* 2e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * Mostly IRQ support for Hexagon 3e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 47c6a5df44fd90a288fe067581c5564859c071fc0Richard Kuo * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved. 5e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 6e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * This program is free software; you can redistribute it and/or modify 7e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * it under the terms of the GNU General Public License version 2 and 8e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * only version 2 as published by the Free Software Foundation. 9e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 10e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * This program is distributed in the hope that it will be useful, 11e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * but WITHOUT ANY WARRANTY; without even the implied warranty of 12e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * GNU General Public License for more details. 14e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 15e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * You should have received a copy of the GNU General Public License 16e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * along with this program; if not, write to the Free Software 17e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 02110-1301, USA. 19e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo */ 20e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 21e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo#include <linux/kernel.h> 22e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo#include <asm/registers.h> 23e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo#include <linux/irq.h> 24e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo#include <linux/hardirq.h> 25e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 26e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo/* 27e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * show_regs - print pt_regs structure 28e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * @regs: pointer to pt_regs 29e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 30e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * To-do: add all the accessor definitions to registers.h 31e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * 32e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo * Will make this routine a lot easier to write. 33e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo */ 34e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuovoid show_regs(struct pt_regs *regs) 35e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo{ 36a43cb95d547a061ed5bf1acb28e0f5fd575e26c1Tejun Heo show_regs_print_info(KERN_EMERG); 37a43cb95d547a061ed5bf1acb28e0f5fd575e26c1Tejun Heo 38e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", 39e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->restart_r0, regs->syscall_nr); 40e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); 41e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", 42e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->lc0, regs->sa0, regs->m0); 43e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", 44e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->lc1, regs->sa1, regs->m1); 45e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", 46e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->gp, regs->ugp, regs->usr); 4760c4ba99e015afe879c2682967c8ca8d233f6d3cRichard Kuo printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n", 4860c4ba99e015afe879c2682967c8ca8d233f6d3cRichard Kuo regs->cs0, regs->cs1); 49e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, 50e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r01, 51e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r02, 52e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r03); 53e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, 54e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r05, 55e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r06, 56e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r07); 57e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, 58e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r09, 59e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r10, 60e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r11); 61e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, 62e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r13, 63e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r14, 64e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r15); 65e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, 66e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r17, 67e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r18, 68e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r19); 69e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, 70e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r21, 71e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r22, 72e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r23); 73e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, 74e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r25, 75e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r26, 76e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r27); 77e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, 78e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r29, 79e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r30, 80e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo regs->r31); 81e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 82e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", 83e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo pt_elr(regs), pt_cause(regs), user_mode(regs)); 84e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", 85e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo pt_psp(regs), pt_badva(regs), ints_enabled(regs)); 86e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo} 87e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 88e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuovoid dummy_handler(struct pt_regs *regs) 89e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo{ 90e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo unsigned int elr = pt_elr(regs); 91e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); 92e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo} 93e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 94e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 95e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuovoid arch_do_IRQ(struct pt_regs *regs) 96e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo{ 97e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo int irq = pt_cause(regs); 98e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo struct pt_regs *old_regs = set_irq_regs(regs); 99e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo 100e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo irq_enter(); 101e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo generic_handle_irq(irq); 102e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo irq_exit(); 103e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo set_irq_regs(old_regs); 104e49ee2906c94cd6a339b2012c23e39d1a39f79e3Richard Kuo} 105