vm_events.c

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/*
 * Mostly IRQ support for Hexagon
 *
 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#include <linux/kernel.h>
#include <asm/registers.h>
#include <linux/irq.h>
#include <linux/hardirq.h>

/*
 * show_regs - print pt_regs structure
 * @regs: pointer to pt_regs
 *
 * To-do:  add all the accessor definitions to registers.h
 *
 * Will make this routine a lot easier to write.
 */
void show_regs(struct pt_regs *regs)
{
    printk(KERN_EMERG "restart_r0: \t0x%08lx   syscall_nr: %ld\n",
           regs->restart_r0, regs->syscall_nr);
    printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);
    printk(KERN_EMERG "lc0: \t0x%08lx   sa0: 0x%08lx   m0:  0x%08lx\n",
           regs->lc0, regs->sa0, regs->m0);
    printk(KERN_EMERG "lc1: \t0x%08lx   sa1: 0x%08lx   m1:  0x%08lx\n",
           regs->lc1, regs->sa1, regs->m1);
    printk(KERN_EMERG "gp: \t0x%08lx   ugp: 0x%08lx   usr: 0x%08lx\n",
           regs->gp, regs->ugp, regs->usr);
    printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00,
        regs->r01,
        regs->r02,
        regs->r03);
    printk(KERN_EMERG "r4:  \t0x%08lx %08lx %08lx %08lx\n", regs->r04,
        regs->r05,
        regs->r06,
        regs->r07);
    printk(KERN_EMERG "r8:  \t0x%08lx %08lx %08lx %08lx\n", regs->r08,
        regs->r09,
        regs->r10,
        regs->r11);
    printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12,
        regs->r13,
        regs->r14,
        regs->r15);
    printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16,
        regs->r17,
        regs->r18,
        regs->r19);
    printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20,
        regs->r21,
        regs->r22,
        regs->r23);
    printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24,
        regs->r25,
        regs->r26,
        regs->r27);
    printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28,
        regs->r29,
        regs->r30,
        regs->r31);

    printk(KERN_EMERG "elr: \t0x%08lx   cause: 0x%08lx   user_mode: %d\n",
        pt_elr(regs), pt_cause(regs), user_mode(regs));
    printk(KERN_EMERG "psp: \t0x%08lx   badva: 0x%08lx   int_enabled: %d\n",
        pt_psp(regs), pt_badva(regs), ints_enabled(regs));
}

void dummy_handler(struct pt_regs *regs)
{
    unsigned int elr = pt_elr(regs);
    printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr);
}


void arch_do_IRQ(struct pt_regs *regs)
{
    int irq = pt_cause(regs);
    struct pt_regs *old_regs = set_irq_regs(regs);

    irq_enter();
    generic_handle_irq(irq);
    irq_exit();
    set_irq_regs(old_regs);
}