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#define	TILE_NMI_DUMP_STACK	1	/* Dump stack for sysrq+'l' */
56
57/* kernel/process.c */
58void do_nmi_dump_stack(struct pt_regs *regs);
59
60/* kernel/traps.c */
61void do_nmi(struct pt_regs *, int fault_num, unsigned long reason);
62
63/* kernel/irq.c */
64void tile_dev_intr(struct pt_regs *, int intnum);
65
66#ifdef CONFIG_HARDWALL
67/* kernel/hardwall.c */
68void do_hardwall_trap(struct pt_regs *, int fault_num);
69#endif
70
71/* kernel/ptrace.c */
72void do_breakpoint(struct pt_regs *, int fault_num);
73
74
75#ifdef __tilegx__
76/* kernel/single_step.c */
77void gx_singlestep_handle(struct pt_regs *, int fault_num);
78
79/* kernel/intvec_64.S */
80void fill_ra_stack(void);
81
82/* Handle unalign data fixup. */
83extern void do_unaligned(struct pt_regs *regs, int vecnum);
84#endif
85
86#endif /* __ASSEMBLY__ */
87
88#ifdef __tilegx__
89/* 128 byte JIT per unalign fixup. */
90#define UNALIGN_JIT_SHIFT    7
91#endif
92
93#endif /* _ASM_TILE_TRAPS_H */