/* * This file is part of the libpayload project. * * Copyright (C) 2008 Advanced Micro Devices, Inc. * Copyright (C) 2008 coresystems GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _ARCH_IO_H #define _ARCH_IO_H #include <stdint.h> #include <arch/cache.h> #include <arch/lib_helpers.h> /* * readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32 * instead for future development. * * TODO: make the existing code use read8/16/32 and write8/16/32 then remove * readb/w/l and writeb/w/l. */ static inline uint8_t readb(volatile const void *_a) { dmb(); return *(volatile const uint8_t *)_a; } static inline uint16_t readw(volatile const void *_a) { dmb(); return *(volatile const uint16_t *)_a; } static inline uint32_t readl(volatile const void *_a) { dmb(); return *(volatile const uint32_t *)_a; } static inline void writeb(uint8_t _v, volatile void *_a) { dmb(); *(volatile uint8_t *)_a = _v; dmb(); } static inline void writew(uint16_t _v, volatile void *_a) { dmb(); *(volatile uint16_t *)_a = _v; dmb(); } static inline void writel(uint32_t _v, volatile void *_a) { dmb(); *(volatile uint32_t *)_a = _v; dmb(); } static inline uint8_t read8(const void *addr) { dmb(); return *(volatile uint8_t *)addr; } static inline uint16_t read16(const void *addr) { dmb(); return *(volatile uint16_t *)addr; } static inline uint32_t read32(const void *addr) { dmb(); return *(volatile uint32_t *)addr; } static inline void write8(void *addr, uint8_t val) { dmb(); *(volatile uint8_t *)addr = val; dmb(); } static inline void write16(void *addr, uint16_t val) { dmb(); *(volatile uint16_t *)addr = val; dmb(); } static inline void write32(void *addr, uint32_t val) { dmb(); *(volatile uint32_t *)addr = val; dmb(); } #endif