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 } 93