LXR linux/arch/sh/include/asm/hw

   1#ifndef __ASM_SH_HW_BREAKPOINT_H
   2#define __ASM_SH_HW_BREAKPOINT_H
   3
   4#ifdef __KERNEL__
   5#define __ARCH_HW_BREAKPOINT_H
   6
   7#include <linux/kdebug.h>
   8#include <linux/types.h>
   9
  10struct arch_hw_breakpoint {
  11        char            *name; /* Contains name of the symbol to set bkpt */
  12        unsigned long   address;
  13        u16             len;
  14        u16             type;
  15};
  16
  17enum {
  18        SH_BREAKPOINT_READ      = (1 << 1),
  19        SH_BREAKPOINT_WRITE     = (1 << 2),
  20        SH_BREAKPOINT_RW        = SH_BREAKPOINT_READ | SH_BREAKPOINT_WRITE,
  21
  22        SH_BREAKPOINT_LEN_1     = (1 << 12),
  23        SH_BREAKPOINT_LEN_2     = (1 << 13),
  24        SH_BREAKPOINT_LEN_4     = SH_BREAKPOINT_LEN_1 | SH_BREAKPOINT_LEN_2,
  25        SH_BREAKPOINT_LEN_8     = (1 << 14),
  26};
  27
  28struct sh_ubc {
  29        const char      *name;
  30        unsigned int    num_events;
  31        unsigned int    trap_nr;
  32        void            (*enable)(struct arch_hw_breakpoint *, int);
  33        void            (*disable)(struct arch_hw_breakpoint *, int);
  34        void            (*enable_all)(unsigned long);
  35        void            (*disable_all)(void);
  36        unsigned long   (*active_mask)(void);
  37        unsigned long   (*triggered_mask)(void);
  38        void            (*clear_triggered_mask)(unsigned long);
  39        struct clk      *clk;   /* optional interface clock / MSTP bit */
  40};
  41
  42struct perf_event;
  43struct task_struct;
  44struct pmu;
  45
  46/* Maximum number of UBC channels */
  47#define HBP_NUM         2
  48
  49static inline int hw_breakpoint_slots(int type)
  50{
  51        return HBP_NUM;
  52}
  53
  54/* arch/sh/kernel/hw_breakpoint.c */
  55extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
  56extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
  57extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
  58                                           unsigned long val, void *data);
  59
  60int arch_install_hw_breakpoint(struct perf_event *bp);
  61void arch_uninstall_hw_breakpoint(struct perf_event *bp);
  62void hw_breakpoint_pmu_read(struct perf_event *bp);
  63
  64extern void arch_fill_perf_breakpoint(struct perf_event *bp);
  65extern int register_sh_ubc(struct sh_ubc *);
  66
  67extern struct pmu perf_ops_bp;
  68
  69#endif /* __KERNEL__ */
  70#endif /* __ASM_SH_HW_BREAKPOINT_H */
  71