1e49ee290SRichard Kuo /* 2e49ee290SRichard Kuo * Mostly IRQ support for Hexagon 3e49ee290SRichard Kuo * 4*7c6a5df4SRichard Kuo * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved. 5e49ee290SRichard Kuo * 6e49ee290SRichard Kuo * This program is free software; you can redistribute it and/or modify 7e49ee290SRichard Kuo * it under the terms of the GNU General Public License version 2 and 8e49ee290SRichard Kuo * only version 2 as published by the Free Software Foundation. 9e49ee290SRichard Kuo * 10e49ee290SRichard Kuo * This program is distributed in the hope that it will be useful, 11e49ee290SRichard Kuo * but WITHOUT ANY WARRANTY; without even the implied warranty of 12e49ee290SRichard Kuo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13e49ee290SRichard Kuo * GNU General Public License for more details. 14e49ee290SRichard Kuo * 15e49ee290SRichard Kuo * You should have received a copy of the GNU General Public License 16e49ee290SRichard Kuo * along with this program; if not, write to the Free Software 17e49ee290SRichard Kuo * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 18e49ee290SRichard Kuo * 02110-1301, USA. 19e49ee290SRichard Kuo */ 20e49ee290SRichard Kuo 21e49ee290SRichard Kuo #include <linux/kernel.h> 22e49ee290SRichard Kuo #include <asm/registers.h> 23e49ee290SRichard Kuo #include <linux/irq.h> 24e49ee290SRichard Kuo #include <linux/hardirq.h> 25e49ee290SRichard Kuo 26e49ee290SRichard Kuo /* 27e49ee290SRichard Kuo * show_regs - print pt_regs structure 28e49ee290SRichard Kuo * @regs: pointer to pt_regs 29e49ee290SRichard Kuo * 30e49ee290SRichard Kuo * To-do: add all the accessor definitions to registers.h 31e49ee290SRichard Kuo * 32e49ee290SRichard Kuo * Will make this routine a lot easier to write. 33e49ee290SRichard Kuo */ 34e49ee290SRichard Kuo void show_regs(struct pt_regs *regs) 35e49ee290SRichard Kuo { 36e49ee290SRichard Kuo printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n", 37e49ee290SRichard Kuo regs->restart_r0, regs->syscall_nr); 38e49ee290SRichard Kuo printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds); 39e49ee290SRichard Kuo printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n", 40e49ee290SRichard Kuo regs->lc0, regs->sa0, regs->m0); 41e49ee290SRichard Kuo printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n", 42e49ee290SRichard Kuo regs->lc1, regs->sa1, regs->m1); 43e49ee290SRichard Kuo printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n", 44e49ee290SRichard Kuo regs->gp, regs->ugp, regs->usr); 4560c4ba99SRichard Kuo printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n", 4660c4ba99SRichard Kuo regs->cs0, regs->cs1); 47e49ee290SRichard Kuo printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00, 48e49ee290SRichard Kuo regs->r01, 49e49ee290SRichard Kuo regs->r02, 50e49ee290SRichard Kuo regs->r03); 51e49ee290SRichard Kuo printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04, 52e49ee290SRichard Kuo regs->r05, 53e49ee290SRichard Kuo regs->r06, 54e49ee290SRichard Kuo regs->r07); 55e49ee290SRichard Kuo printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08, 56e49ee290SRichard Kuo regs->r09, 57e49ee290SRichard Kuo regs->r10, 58e49ee290SRichard Kuo regs->r11); 59e49ee290SRichard Kuo printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12, 60e49ee290SRichard Kuo regs->r13, 61e49ee290SRichard Kuo regs->r14, 62e49ee290SRichard Kuo regs->r15); 63e49ee290SRichard Kuo printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16, 64e49ee290SRichard Kuo regs->r17, 65e49ee290SRichard Kuo regs->r18, 66e49ee290SRichard Kuo regs->r19); 67e49ee290SRichard Kuo printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20, 68e49ee290SRichard Kuo regs->r21, 69e49ee290SRichard Kuo regs->r22, 70e49ee290SRichard Kuo regs->r23); 71e49ee290SRichard Kuo printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24, 72e49ee290SRichard Kuo regs->r25, 73e49ee290SRichard Kuo regs->r26, 74e49ee290SRichard Kuo regs->r27); 75e49ee290SRichard Kuo printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28, 76e49ee290SRichard Kuo regs->r29, 77e49ee290SRichard Kuo regs->r30, 78e49ee290SRichard Kuo regs->r31); 79e49ee290SRichard Kuo 80e49ee290SRichard Kuo printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n", 81e49ee290SRichard Kuo pt_elr(regs), pt_cause(regs), user_mode(regs)); 82e49ee290SRichard Kuo printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n", 83e49ee290SRichard Kuo pt_psp(regs), pt_badva(regs), ints_enabled(regs)); 84e49ee290SRichard Kuo } 85e49ee290SRichard Kuo 86e49ee290SRichard Kuo void dummy_handler(struct pt_regs *regs) 87e49ee290SRichard Kuo { 88e49ee290SRichard Kuo unsigned int elr = pt_elr(regs); 89e49ee290SRichard Kuo printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr); 90e49ee290SRichard Kuo } 91e49ee290SRichard Kuo 92e49ee290SRichard Kuo 93e49ee290SRichard Kuo void arch_do_IRQ(struct pt_regs *regs) 94e49ee290SRichard Kuo { 95e49ee290SRichard Kuo int irq = pt_cause(regs); 96e49ee290SRichard Kuo struct pt_regs *old_regs = set_irq_regs(regs); 97e49ee290SRichard Kuo 98e49ee290SRichard Kuo irq_enter(); 99e49ee290SRichard Kuo generic_handle_irq(irq); 100e49ee290SRichard Kuo irq_exit(); 101e49ee290SRichard Kuo set_irq_regs(old_regs); 102e49ee290SRichard Kuo } 103