1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef __ASM_SH_HW_BREAKPOINT_H
3*4882a593Smuzhiyun #define __ASM_SH_HW_BREAKPOINT_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <uapi/asm/hw_breakpoint.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #define __ARCH_HW_BREAKPOINT_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/kdebug.h>
10*4882a593Smuzhiyun #include <linux/types.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun struct arch_hw_breakpoint {
13*4882a593Smuzhiyun unsigned long address;
14*4882a593Smuzhiyun u16 len;
15*4882a593Smuzhiyun u16 type;
16*4882a593Smuzhiyun };
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun enum {
19*4882a593Smuzhiyun SH_BREAKPOINT_READ = (1 << 1),
20*4882a593Smuzhiyun SH_BREAKPOINT_WRITE = (1 << 2),
21*4882a593Smuzhiyun SH_BREAKPOINT_RW = SH_BREAKPOINT_READ | SH_BREAKPOINT_WRITE,
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun SH_BREAKPOINT_LEN_1 = (1 << 12),
24*4882a593Smuzhiyun SH_BREAKPOINT_LEN_2 = (1 << 13),
25*4882a593Smuzhiyun SH_BREAKPOINT_LEN_4 = SH_BREAKPOINT_LEN_1 | SH_BREAKPOINT_LEN_2,
26*4882a593Smuzhiyun SH_BREAKPOINT_LEN_8 = (1 << 14),
27*4882a593Smuzhiyun };
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun struct sh_ubc {
30*4882a593Smuzhiyun const char *name;
31*4882a593Smuzhiyun unsigned int num_events;
32*4882a593Smuzhiyun unsigned int trap_nr;
33*4882a593Smuzhiyun void (*enable)(struct arch_hw_breakpoint *, int);
34*4882a593Smuzhiyun void (*disable)(struct arch_hw_breakpoint *, int);
35*4882a593Smuzhiyun void (*enable_all)(unsigned long);
36*4882a593Smuzhiyun void (*disable_all)(void);
37*4882a593Smuzhiyun unsigned long (*active_mask)(void);
38*4882a593Smuzhiyun unsigned long (*triggered_mask)(void);
39*4882a593Smuzhiyun void (*clear_triggered_mask)(unsigned long);
40*4882a593Smuzhiyun struct clk *clk; /* optional interface clock / MSTP bit */
41*4882a593Smuzhiyun };
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun struct perf_event_attr;
44*4882a593Smuzhiyun struct perf_event;
45*4882a593Smuzhiyun struct task_struct;
46*4882a593Smuzhiyun struct pmu;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* Maximum number of UBC channels */
49*4882a593Smuzhiyun #define HBP_NUM 2
50*4882a593Smuzhiyun
hw_breakpoint_slots(int type)51*4882a593Smuzhiyun static inline int hw_breakpoint_slots(int type)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun return HBP_NUM;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun /* arch/sh/kernel/hw_breakpoint.c */
57*4882a593Smuzhiyun extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
58*4882a593Smuzhiyun extern int hw_breakpoint_arch_parse(struct perf_event *bp,
59*4882a593Smuzhiyun const struct perf_event_attr *attr,
60*4882a593Smuzhiyun struct arch_hw_breakpoint *hw);
61*4882a593Smuzhiyun extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
62*4882a593Smuzhiyun unsigned long val, void *data);
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun int arch_install_hw_breakpoint(struct perf_event *bp);
65*4882a593Smuzhiyun void arch_uninstall_hw_breakpoint(struct perf_event *bp);
66*4882a593Smuzhiyun void hw_breakpoint_pmu_read(struct perf_event *bp);
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun extern void arch_fill_perf_breakpoint(struct perf_event *bp);
69*4882a593Smuzhiyun extern int register_sh_ubc(struct sh_ubc *);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun extern struct pmu perf_ops_bp;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun #endif /* __ASM_SH_HW_BREAKPOINT_H */
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