1 files changed, 67 insertions, 0 deletions

diff --git a/arch/sh/include/asm/hw_breakpoint.h b/arch/sh/include/asm/hw_breakpoint.h
new file mode 100644
index 00000000000..965dd780d51
--- /dev/null
+++ b/arch/sh/include/asm/hw_breakpoint.h
@@ -0,0 +1,67 @@
+#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
+
+/* arch/sh/kernel/hw_breakpoint.c */
+extern int arch_check_va_in_userspace(unsigned long va, u16 hbp_len);
+extern int arch_validate_hwbkpt_settings(struct perf_event *bp,
+                                         struct task_struct *tsk);
+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);
+void hw_breakpoint_pmu_unthrottle(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 */