74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_HW_BREAKPOINT_H
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#define __ASM_SH_HW_BREAKPOINT_H
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#include <uapi/asm/hw_breakpoint.h>
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#define __ARCH_HW_BREAKPOINT_H
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#include <linux/kdebug.h>
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#include <linux/types.h>
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struct arch_hw_breakpoint {
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unsigned long address;
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u16 len;
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u16 type;
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};
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enum {
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SH_BREAKPOINT_READ = (1 << 1),
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SH_BREAKPOINT_WRITE = (1 << 2),
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SH_BREAKPOINT_RW = SH_BREAKPOINT_READ | SH_BREAKPOINT_WRITE,
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SH_BREAKPOINT_LEN_1 = (1 << 12),
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SH_BREAKPOINT_LEN_2 = (1 << 13),
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SH_BREAKPOINT_LEN_4 = SH_BREAKPOINT_LEN_1 | SH_BREAKPOINT_LEN_2,
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SH_BREAKPOINT_LEN_8 = (1 << 14),
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};
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struct sh_ubc {
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const char *name;
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unsigned int num_events;
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unsigned int trap_nr;
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void (*enable)(struct arch_hw_breakpoint *, int);
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void (*disable)(struct arch_hw_breakpoint *, int);
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void (*enable_all)(unsigned long);
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void (*disable_all)(void);
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unsigned long (*active_mask)(void);
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unsigned long (*triggered_mask)(void);
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void (*clear_triggered_mask)(unsigned long);
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struct clk *clk; /* optional interface clock / MSTP bit */
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};
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struct perf_event_attr;
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struct perf_event;
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struct task_struct;
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struct pmu;
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/* Maximum number of UBC channels */
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#define HBP_NUM 2
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static inline int hw_breakpoint_slots(int type)
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{
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return HBP_NUM;
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}
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/* arch/sh/kernel/hw_breakpoint.c */
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extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
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extern int hw_breakpoint_arch_parse(struct perf_event *bp,
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const struct perf_event_attr *attr,
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struct arch_hw_breakpoint *hw);
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extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
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unsigned long val, void *data);
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int arch_install_hw_breakpoint(struct perf_event *bp);
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void arch_uninstall_hw_breakpoint(struct perf_event *bp);
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void hw_breakpoint_pmu_read(struct perf_event *bp);
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extern void arch_fill_perf_breakpoint(struct perf_event *bp);
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extern int register_sh_ubc(struct sh_ubc *);
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extern struct pmu perf_ops_bp;
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#endif /* __ASM_SH_HW_BREAKPOINT_H */
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