LXR linux/arch/hexagon/kernel/vm

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Mostly IRQ support for Hexagon
   4 *
   5 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
   6 */
   7
   8#include <linux/kernel.h>
   9#include <linux/sched/debug.h>
  10#include <asm/registers.h>
  11#include <linux/irq.h>
  12#include <linux/hardirq.h>
  13
  14/*
  15 * show_regs - print pt_regs structure
  16 * @regs: pointer to pt_regs
  17 *
  18 * To-do:  add all the accessor definitions to registers.h
  19 *
  20 * Will make this routine a lot easier to write.
  21 */
  22void show_regs(struct pt_regs *regs)
  23{
  24        show_regs_print_info(KERN_EMERG);
  25
  26        printk(KERN_EMERG "restart_r0: \t0x%08lx   syscall_nr: %ld\n",
  27               regs->restart_r0, regs->syscall_nr);
  28        printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);
  29        printk(KERN_EMERG "lc0: \t0x%08lx   sa0: 0x%08lx   m0:  0x%08lx\n",
  30               regs->lc0, regs->sa0, regs->m0);
  31        printk(KERN_EMERG "lc1: \t0x%08lx   sa1: 0x%08lx   m1:  0x%08lx\n",
  32               regs->lc1, regs->sa1, regs->m1);
  33        printk(KERN_EMERG "gp: \t0x%08lx   ugp: 0x%08lx   usr: 0x%08lx\n",
  34               regs->gp, regs->ugp, regs->usr);
  35        printk(KERN_EMERG "cs0: \t0x%08lx   cs1: 0x%08lx\n",
  36               regs->cs0, regs->cs1);
  37        printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00,
  38                regs->r01,
  39                regs->r02,
  40                regs->r03);
  41        printk(KERN_EMERG "r4:  \t0x%08lx %08lx %08lx %08lx\n", regs->r04,
  42                regs->r05,
  43                regs->r06,
  44                regs->r07);
  45        printk(KERN_EMERG "r8:  \t0x%08lx %08lx %08lx %08lx\n", regs->r08,
  46                regs->r09,
  47                regs->r10,
  48                regs->r11);
  49        printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12,
  50                regs->r13,
  51                regs->r14,
  52                regs->r15);
  53        printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16,
  54                regs->r17,
  55                regs->r18,
  56                regs->r19);
  57        printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20,
  58                regs->r21,
  59                regs->r22,
  60                regs->r23);
  61        printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24,
  62                regs->r25,
  63                regs->r26,
  64                regs->r27);
  65        printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28,
  66                regs->r29,
  67                regs->r30,
  68                regs->r31);
  69
  70        printk(KERN_EMERG "elr: \t0x%08lx   cause: 0x%08lx   user_mode: %d\n",
  71                pt_elr(regs), pt_cause(regs), user_mode(regs));
  72        printk(KERN_EMERG "psp: \t0x%08lx   badva: 0x%08lx   int_enabled: %d\n",
  73                pt_psp(regs), pt_badva(regs), ints_enabled(regs));
  74}
  75
  76void dummy_handler(struct pt_regs *regs)
  77{
  78        unsigned int elr = pt_elr(regs);
  79        printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr);
  80}
  81
  82
  83void arch_do_IRQ(struct pt_regs *regs)
  84{
  85        int irq = pt_cause(regs);
  86        struct pt_regs *old_regs = set_irq_regs(regs);
  87
  88        irq_enter();
  89        generic_handle_irq(irq);
  90        irq_exit();
  91        set_irq_regs(old_regs);
  92}
  93