arch/hexagon/kernel/vm_events.c

   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  */
  22 void 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
  76 void 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
  83 void 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 }