/* * Copyright (c) 2014, Linaro Limited * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 IO_H #define IO_H #include #include static inline void write8(uint8_t val, vaddr_t addr) { *(volatile uint8_t *)addr = val; } static inline void write16(uint16_t val, vaddr_t addr) { *(volatile uint16_t *)addr = val; } static inline void write32(uint32_t val, vaddr_t addr) { *(volatile uint32_t *)addr = val; } static inline uint8_t read8(vaddr_t addr) { return *(volatile uint8_t *)addr; } static inline uint16_t read16(vaddr_t addr) { return *(volatile uint16_t *)addr; } static inline uint32_t read32(vaddr_t addr) { return *(volatile uint32_t *)addr; } static inline void io_mask8(vaddr_t addr, uint8_t val, uint8_t mask) { write8((read8(addr) & ~mask) | (val & mask), addr); } static inline void io_mask16(vaddr_t addr, uint16_t val, uint16_t mask) { write16((read16(addr) & ~mask) | (val & mask), addr); } static inline void io_mask32(vaddr_t addr, uint32_t val, uint32_t mask) { write32((read32(addr) & ~mask) | (val & mask), addr); } #endif /*IO_H*/