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 */
  22 void do_page_fault(struct pt_regs *, int fault_num,
  23                    unsigned long address, unsigned long write);
  24 #if CHIP_HAS_TILE_DMA()
  25 void 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  */
  33 struct intvec_state {
  34         void *handler;
  35         unsigned long vecnum;
  36         unsigned long fault_num;
  37         unsigned long info;
  38         unsigned long retval;
  39 };
  40 struct 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 */
  46 void do_trap(struct pt_regs *, int fault_num, unsigned long reason);
  47 void kernel_double_fault(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
  48
  49 /* kernel/time.c */
  50 void do_timer_interrupt(struct pt_regs *, int fault_num);
  51
  52 /* kernel/messaging.c */
  53 void 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 */
  58 void do_nmi_dump_stack(struct pt_regs *regs);
  59
  60 /* kernel/traps.c */
  61 void do_nmi(struct pt_regs *, int fault_num, unsigned long reason);
  62
  63 /* kernel/irq.c */
  64 void tile_dev_intr(struct pt_regs *, int intnum);
  65
  66 #ifdef CONFIG_HARDWALL
  67 /* kernel/hardwall.c */
  68 void do_hardwall_trap(struct pt_regs *, int fault_num);
  69 #endif
  70
  71 /* kernel/ptrace.c */
  72 void do_breakpoint(struct pt_regs *, int fault_num);
  73
  74
  75 #ifdef __tilegx__
  76 /* kernel/single_step.c */
  77 void gx_singlestep_handle(struct pt_regs *, int fault_num);
  78
  79 /* kernel/intvec_64.S */
  80 void fill_ra_stack(void);
  81
  82 /* Handle unalign data fixup. */
  83 extern 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 */