| /* |
| * include/linux/amlogic/watch_point.h |
| * |
| * Copyright (C) 2017 Amlogic, Inc. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| */ |
| |
| #ifndef __AML_WATCH_POINT_H__ |
| #define __AML_WATCH_POINT_H__ |
| |
| #include <uapi/linux/elf.h> |
| #include <uapi/linux/hw_breakpoint.h> |
| #include <linux/perf_event.h> |
| |
| #define MAX_WATCH_POINTS 16 |
| |
| #ifdef CONFIG_ARM64 |
| extern u64 read_wb_reg(int reg, int n); |
| #else |
| extern u32 read_wb_reg(int n); |
| #endif |
| |
| #ifdef CONFIG_HAVE_HW_BREAKPOINT |
| extern int aml_watch_point_register(unsigned long addr, |
| unsigned int len, |
| unsigned int type, |
| perf_overflow_handler_t handle); |
| |
| extern void aml_watch_point_remove(unsigned long addr); |
| #else |
| static inline int aml_watch_point_register(unsigned long addr, |
| unsigned int len, |
| unsigned int type, |
| perf_overflow_handler_t handle) |
| { |
| return -1; |
| } |
| |
| static inline void aml_watch_point_remove(unsigned long addr) |
| { |
| |
| } |
| #endif |
| |
| #endif |