1 /*
2 * Mostly IRQ support for Hexagon
3 *
4 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 and
8 * only version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA.
19 */
20
21 #include <linux/kernel.h>
22 #include <asm/registers.h>
23 #include <linux/irq.h>
24 #include <linux/hardirq.h>
25
26 /*
27 * show_regs - print pt_regs structure
28 * @regs: pointer to pt_regs
29 *
30 * To-do: add all the accessor definitions to registers.h
31 *
32 * Will make this routine a lot easier to write.
33 */
34 void show_regs(struct pt_regs *regs)
35 {
36 show_regs_print_info(KERN_EMERG);
37
38 printk(KERN_EMERG "restart_r0: \t0x%08lx syscall_nr: %ld\n",
39 regs->restart_r0, regs->syscall_nr);
40 printk(KERN_EMERG "preds: \t\t0x%08lx\n", regs->preds);
41 printk(KERN_EMERG "lc0: \t0x%08lx sa0: 0x%08lx m0: 0x%08lx\n",
42 regs->lc0, regs->sa0, regs->m0);
43 printk(KERN_EMERG "lc1: \t0x%08lx sa1: 0x%08lx m1: 0x%08lx\n",
44 regs->lc1, regs->sa1, regs->m1);
45 printk(KERN_EMERG "gp: \t0x%08lx ugp: 0x%08lx usr: 0x%08lx\n",
46 regs->gp, regs->ugp, regs->usr);
47 printk(KERN_EMERG "cs0: \t0x%08lx cs1: 0x%08lx\n",
48 regs->cs0, regs->cs1);
49 printk(KERN_EMERG "r0: \t0x%08lx %08lx %08lx %08lx\n", regs->r00,
50 regs->r01,
51 regs->r02,
52 regs->r03);
53 printk(KERN_EMERG "r4: \t0x%08lx %08lx %08lx %08lx\n", regs->r04,
54 regs->r05,
55 regs->r06,
56 regs->r07);
57 printk(KERN_EMERG "r8: \t0x%08lx %08lx %08lx %08lx\n", regs->r08,
58 regs->r09,
59 regs->r10,
60 regs->r11);
61 printk(KERN_EMERG "r12: \t0x%08lx %08lx %08lx %08lx\n", regs->r12,
62 regs->r13,
63 regs->r14,
64 regs->r15);
65 printk(KERN_EMERG "r16: \t0x%08lx %08lx %08lx %08lx\n", regs->r16,
66 regs->r17,
67 regs->r18,
68 regs->r19);
69 printk(KERN_EMERG "r20: \t0x%08lx %08lx %08lx %08lx\n", regs->r20,
70 regs->r21,
71 regs->r22,
72 regs->r23);
73 printk(KERN_EMERG "r24: \t0x%08lx %08lx %08lx %08lx\n", regs->r24,
74 regs->r25,
75 regs->r26,
76 regs->r27);
77 printk(KERN_EMERG "r28: \t0x%08lx %08lx %08lx %08lx\n", regs->r28,
78 regs->r29,
79 regs->r30,
80 regs->r31);
81
82 printk(KERN_EMERG "elr: \t0x%08lx cause: 0x%08lx user_mode: %d\n",
83 pt_elr(regs), pt_cause(regs), user_mode(regs));
84 printk(KERN_EMERG "psp: \t0x%08lx badva: 0x%08lx int_enabled: %d\n",
85 pt_psp(regs), pt_badva(regs), ints_enabled(regs));
86 }
87
88 void dummy_handler(struct pt_regs *regs)
89 {
90 unsigned int elr = pt_elr(regs);
91 printk(KERN_ERR "Unimplemented handler; ELR=0x%08x\n", elr);
92 }
93
94
95 void arch_do_IRQ(struct pt_regs *regs)
96 {
97 int irq = pt_cause(regs);
98 struct pt_regs *old_regs = set_irq_regs(regs);
99
100 irq_enter();
101 generic_handle_irq(irq);
102 irq_exit();
103 set_irq_regs(old_regs);
104 }
105
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