1/*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 *   This program is free software; you can redistribute it and/or
5 *   modify it under the terms of the GNU General Public License
6 *   as published by the Free Software Foundation, version 2.
7 *
8 *   This program is distributed in the hope that it will be useful, but
9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 *   NON INFRINGEMENT.  See the GNU General Public License for
12 *   more details.
13 */
14
15#ifndef _ASM_TILE_TRAPS_H
16#define _ASM_TILE_TRAPS_H
17
18#ifndef __ASSEMBLY__
19#include <arch/chip.h>
20
21/* mm/fault.c */
22void do_page_fault(struct pt_regs *, int fault_num,
23		   unsigned long address, unsigned long write);
24#if CHIP_HAS_TILE_DMA()
25void do_async_page_fault(struct pt_regs *);
26#endif
27
28#ifndef __tilegx__
29/*
30 * We return this structure in registers to avoid having to write
31 * additional save/restore code in the intvec.S caller.
32 */
33struct intvec_state {
34	void *handler;
35	unsigned long vecnum;
36	unsigned long fault_num;
37	unsigned long info;
38	unsigned long retval;
39};
40struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num,
41				      unsigned long address,
42				      unsigned long info);
43#endif
44
45/* kernel/traps.c */
46void do_trap(struct pt_regs *, int fault_num, unsigned long reason);
47void kernel_double_fault(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
48
49/* kernel/time.c */
50void do_timer_interrupt(struct pt_regs *, int fault_num);
51
52/* kernel/messaging.c */
53void hv_message_intr(struct pt_regs *, int intnum);
54
55/* kernel/irq.c */
56void tile_dev_intr(struct pt_regs *, int intnum);
57
58#ifdef CONFIG_HARDWALL
59/* kernel/hardwall.c */
60void do_hardwall_trap(struct pt_regs *, int fault_num);
61#endif
62
63/* kernel/ptrace.c */
64void do_breakpoint(struct pt_regs *, int fault_num);
65
66
67#ifdef __tilegx__
68/* kernel/single_step.c */
69void gx_singlestep_handle(struct pt_regs *, int fault_num);
70
71/* kernel/intvec_64.S */
72void fill_ra_stack(void);
73
74/* Handle unalign data fixup. */
75extern void do_unaligned(struct pt_regs *regs, int vecnum);
76#endif
77
78#endif /* __ASSEMBLY__ */
79
80#ifdef __tilegx__
81/* 128 byte JIT per unalign fixup. */
82#define UNALIGN_JIT_SHIFT    7
83#endif
84
85#endif /* _ASM_TILE_TRAPS_H */
86