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