[linux-2.6-block.git] / arch / sh / include / asm / hw_breakpoint.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_HW_BREAKPOINT_H
#define __ASM_SH_HW_BREAKPOINT_H

#include <uapi/asm/hw_breakpoint.h>

#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 arch_hw_breakpoint *hw);
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 /* __ASM_SH_HW_BREAKPOINT_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
09a07294 PM	2	#ifndef __ASM_SH_HW_BREAKPOINT_H
	3	#define __ASM_SH_HW_BREAKPOINT_H
	4
0a9426df DH	5	#include <uapi/asm/hw_breakpoint.h>
0a9426df DH	6
09a07294 PM	7	#define __ARCH_HW_BREAKPOINT_H
09a07294 PM	8
31a090ae PM	9	#include <linux/kdebug.h>
	10	#include <linux/types.h>
	11
09a07294 PM	12	struct arch_hw_breakpoint {
	13	char name; / Contains name of the symbol to set bkpt */
	14	unsigned long address;
09a07294 PM	15	u16 len;
	16	u16 type;
	17	};
	18
	19	enum {
	20	SH_BREAKPOINT_READ = (1 << 1),
	21	SH_BREAKPOINT_WRITE = (1 << 2),
	22	SH_BREAKPOINT_RW = SH_BREAKPOINT_READ \| SH_BREAKPOINT_WRITE,
	23
	24	SH_BREAKPOINT_LEN_1 = (1 << 12),
	25	SH_BREAKPOINT_LEN_2 = (1 << 13),
	26	SH_BREAKPOINT_LEN_4 = SH_BREAKPOINT_LEN_1 \| SH_BREAKPOINT_LEN_2,
	27	SH_BREAKPOINT_LEN_8 = (1 << 14),
	28	};
	29
4352fc1b PM	30	struct sh_ubc {
	31	const char *name;
	32	unsigned int num_events;
	33	unsigned int trap_nr;
	34	void (enable)(struct arch_hw_breakpoint , int);
	35	void (disable)(struct arch_hw_breakpoint , int);
	36	void (*enable_all)(unsigned long);
	37	void (*disable_all)(void);
	38	unsigned long (*active_mask)(void);
	39	unsigned long (*triggered_mask)(void);
	40	void (*clear_triggered_mask)(unsigned long);
	41	struct clk clk; / optional interface clock / MSTP bit */
	42	};
09a07294 PM	43
	44	struct perf_event;
	45	struct task_struct;
	46	struct pmu;
	47
4352fc1b PM	48	/* Maximum number of UBC channels */
	49	#define HBP_NUM 2
	50
feef47d0 FW	51	static inline int hw_breakpoint_slots(int type)
	52	{
	53	return HBP_NUM;
	54	}
	55
4352fc1b	56	/* arch/sh/kernel/hw_breakpoint.c */
8e983ff9	57	extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
b2812d03	58	extern int arch_validate_hwbkpt_settings(struct perf_event *bp);
09a07294 PM	59	extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
	60	unsigned long val, void *data);
	61
	62	int arch_install_hw_breakpoint(struct perf_event *bp);
	63	void arch_uninstall_hw_breakpoint(struct perf_event *bp);
	64	void hw_breakpoint_pmu_read(struct perf_event *bp);
09a07294 PM	65
09a07294 PM	66	extern void arch_fill_perf_breakpoint(struct perf_event *bp);
4352fc1b	67	extern int register_sh_ubc(struct sh_ubc *);
09a07294 PM	68
	69	extern struct pmu perf_ops_bp;
	70
09a07294	71	#endif /* __ASM_SH_HW_BREAKPOINT_H */