| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_SH_HW_BREAKPOINT_H |
| 3 | #define __ASM_SH_HW_BREAKPOINT_H |
| 4 | |
| 5 | #include <uapi/asm/hw_breakpoint.h> |
| 6 | |
| 7 | #define __ARCH_HW_BREAKPOINT_H |
| 8 | |
| 9 | #include <linux/kdebug.h> |
| 10 | #include <linux/types.h> |
| 11 | |
| 12 | struct arch_hw_breakpoint { |
| 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_attr; |
| 44 | struct perf_event; |
| 45 | struct task_struct; |
| 46 | struct pmu; |
| 47 | |
| 48 | /* Maximum number of UBC channels */ |
| 49 | #define HBP_NUM 2 |
| 50 | |
| 51 | static inline int hw_breakpoint_slots(int type) |
| 52 | { |
| 53 | return HBP_NUM; |
| 54 | } |
| 55 | |
| 56 | /* arch/sh/kernel/hw_breakpoint.c */ |
| 57 | extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw); |
| 58 | extern int hw_breakpoint_arch_parse(struct perf_event *bp, |
| 59 | const struct perf_event_attr *attr, |
| 60 | struct arch_hw_breakpoint *hw); |
| 61 | extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, |
| 62 | unsigned long val, void *data); |
| 63 | |
| 64 | int arch_install_hw_breakpoint(struct perf_event *bp); |
| 65 | void arch_uninstall_hw_breakpoint(struct perf_event *bp); |
| 66 | void hw_breakpoint_pmu_read(struct perf_event *bp); |
| 67 | |
| 68 | extern void arch_fill_perf_breakpoint(struct perf_event *bp); |
| 69 | extern int register_sh_ubc(struct sh_ubc *); |
| 70 | |
| 71 | extern struct pmu perf_ops_bp; |
| 72 | |
| 73 | #endif /* __ASM_SH_HW_BREAKPOINT_H */ |