[mirror_ubuntu-hirsute-kernel.git] / arch / sh / include / asm / hw_breakpoint.h

#ifndef __ASM_SH_HW_BREAKPOINT_H
#define __ASM_SH_HW_BREAKPOINT_H

#ifdef __KERNEL__
#define __ARCH_HW_BREAKPOINT_H

#include <linux/kdebug.h>
#include <linux/types.h>

struct arch_hw_breakpoint {
	char		*name; /* Contains name of the symbol to set bkpt */
	unsigned long	address;
	u16		len;
	u16		type;
};

enum {
	SH_BREAKPOINT_READ	= (1 << 1),
	SH_BREAKPOINT_WRITE	= (1 << 2),
	SH_BREAKPOINT_RW	= SH_BREAKPOINT_READ | SH_BREAKPOINT_WRITE,

	SH_BREAKPOINT_LEN_1	= (1 << 12),
	SH_BREAKPOINT_LEN_2	= (1 << 13),
	SH_BREAKPOINT_LEN_4	= SH_BREAKPOINT_LEN_1 | SH_BREAKPOINT_LEN_2,
	SH_BREAKPOINT_LEN_8	= (1 << 14),
};

struct sh_ubc {
	const char	*name;
	unsigned int	num_events;
	unsigned int	trap_nr;
	void		(*enable)(struct arch_hw_breakpoint *, int);
	void		(*disable)(struct arch_hw_breakpoint *, int);
	void		(*enable_all)(unsigned long);
	void		(*disable_all)(void);
	unsigned long	(*active_mask)(void);
	unsigned long	(*triggered_mask)(void);
	void		(*clear_triggered_mask)(unsigned long);
	struct clk	*clk;	/* optional interface clock / MSTP bit */
};

struct perf_event;
struct task_struct;
struct pmu;

/* Maximum number of UBC channels */
#define HBP_NUM		2

static inline int hw_breakpoint_slots(int type)
{
	return HBP_NUM;
}

/* arch/sh/kernel/hw_breakpoint.c */
extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
					   unsigned long val, void *data);

int arch_install_hw_breakpoint(struct perf_event *bp);
void arch_uninstall_hw_breakpoint(struct perf_event *bp);
void hw_breakpoint_pmu_read(struct perf_event *bp);

extern void arch_fill_perf_breakpoint(struct perf_event *bp);
extern int register_sh_ubc(struct sh_ubc *);

extern struct pmu perf_ops_bp;

#endif /* __KERNEL__ */
#endif /* __ASM_SH_HW_BREAKPOINT_H */
Commit	Line	Data
09a07294 PM	1	#ifndef __ASM_SH_HW_BREAKPOINT_H
	2	#define __ASM_SH_HW_BREAKPOINT_H
	3
09a07294 PM	4	#ifdef __KERNEL__
	5	#define __ARCH_HW_BREAKPOINT_H
	6
31a090ae PM	7	#include <linux/kdebug.h>
	8	#include <linux/types.h>
	9
09a07294 PM	10	struct arch_hw_breakpoint {
	11	char name; / Contains name of the symbol to set bkpt */
	12	unsigned long address;
09a07294 PM	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
4352fc1b PM	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	};
09a07294 PM	41
	42	struct perf_event;
	43	struct task_struct;
	44	struct pmu;
	45
4352fc1b PM	46	/* Maximum number of UBC channels */
	47	#define HBP_NUM 2
	48
feef47d0 FW	49	static inline int hw_breakpoint_slots(int type)
	50	{
	51	return HBP_NUM;
	52	}
	53
4352fc1b	54	/* arch/sh/kernel/hw_breakpoint.c */
b2812d03 FW	55	extern int arch_check_bp_in_kernelspace(struct perf_event *bp);
b2812d03 FW	56	extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
09a07294 PM	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);
09a07294 PM	63
09a07294 PM	64	extern void arch_fill_perf_breakpoint(struct perf_event *bp);
4352fc1b	65	extern int register_sh_ubc(struct sh_ubc *);
09a07294 PM	66
	67	extern struct pmu perf_ops_bp;
	68
	69	#endif /* __KERNEL__ */
	70	#endif /* __ASM_SH_HW_BREAKPOINT_H */