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 */ 71