Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
[linux-2.6.git] / arch / sh / include / asm / hw_breakpoint.h
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
10 struct 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
17 enum {
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
28 struct 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
42 struct perf_event;
43 struct task_struct;
44 struct pmu;
45
46 /* Maximum number of UBC channels */
47 #define HBP_NUM         2
48
49 static inline int hw_breakpoint_slots(int type)
50 {
51         return HBP_NUM;
52 }
53
54 /* arch/sh/kernel/hw_breakpoint.c */
55 extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
56 extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
57 extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
58                                            unsigned long val, void *data);
59
60 int arch_install_hw_breakpoint(struct perf_event *bp);
61 void arch_uninstall_hw_breakpoint(struct perf_event *bp);
62 void hw_breakpoint_pmu_read(struct perf_event *bp);
63
64 extern void arch_fill_perf_breakpoint(struct perf_event *bp);
65 extern int register_sh_ubc(struct sh_ubc *);
66
67 extern struct pmu perf_ops_bp;
68
69 #endif /* __KERNEL__ */
70 #endif /* __ASM_SH_HW_BREAKPOINT_H */