LXR linux/arch/tile/include/asm/traps.h

   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