1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2014, Linaro Limited 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #ifndef IO_H 29 #define IO_H 30 31 #include <stdint.h> 32 #include <types_ext.h> 33 #include <utee_defines.h> 34 35 static inline void write8(uint8_t val, vaddr_t addr) 36 { 37 *(volatile uint8_t *)addr = val; 38 } 39 40 static inline void write16(uint16_t val, vaddr_t addr) 41 { 42 *(volatile uint16_t *)addr = val; 43 } 44 45 static inline void write32(uint32_t val, vaddr_t addr) 46 { 47 *(volatile uint32_t *)addr = val; 48 } 49 50 static inline uint8_t read8(vaddr_t addr) 51 { 52 return *(volatile uint8_t *)addr; 53 } 54 55 static inline uint16_t read16(vaddr_t addr) 56 { 57 return *(volatile uint16_t *)addr; 58 } 59 60 static inline uint32_t read32(vaddr_t addr) 61 { 62 return *(volatile uint32_t *)addr; 63 } 64 65 static inline void io_mask8(vaddr_t addr, uint8_t val, uint8_t mask) 66 { 67 write8((read8(addr) & ~mask) | (val & mask), addr); 68 } 69 70 static inline void io_mask16(vaddr_t addr, uint16_t val, uint16_t mask) 71 { 72 write16((read16(addr) & ~mask) | (val & mask), addr); 73 } 74 75 static inline void io_mask32(vaddr_t addr, uint32_t val, uint32_t mask) 76 { 77 write32((read32(addr) & ~mask) | (val & mask), addr); 78 } 79 80 static inline uint64_t get_be64(const void *p) 81 { 82 return TEE_U64_FROM_BIG_ENDIAN(*(const uint64_t *)p); 83 } 84 85 static inline void put_be64(void *p, uint64_t val) 86 { 87 *(uint64_t *)p = TEE_U64_TO_BIG_ENDIAN(val); 88 } 89 90 static inline uint32_t get_be32(const void *p) 91 { 92 return TEE_U32_FROM_BIG_ENDIAN(*(const uint32_t *)p); 93 } 94 95 static inline void put_be32(void *p, uint32_t val) 96 { 97 *(uint32_t *)p = TEE_U32_TO_BIG_ENDIAN(val); 98 } 99 100 static inline uint16_t get_be16(const void *p) 101 { 102 return TEE_U16_FROM_BIG_ENDIAN(*(const uint16_t *)p); 103 } 104 105 static inline void put_be16(void *p, uint16_t val) 106 { 107 *(uint16_t *)p = TEE_U16_TO_BIG_ENDIAN(val); 108 } 109 110 #endif /*IO_H*/ 111