Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
| 4 | * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| 5 | * Copyright (C) 2008 coresystems GmbH |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. The name of the author may not be used to endorse or promote products |
| 16 | * derived from this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef _ARCH_IO_H |
| 32 | #define _ARCH_IO_H |
| 33 | |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 34 | #include <stdint.h> |
| 35 | #include <arch/cache.h> |
Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 36 | |
Daisuke Nojiri | 3949336 | 2015-06-25 16:19:49 -0700 | [diff] [blame] | 37 | /* |
| 38 | * readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32 |
| 39 | * instead for future development. |
| 40 | * |
| 41 | * TODO: make the existing code use read8/16/32 and write8/16/32 then remove |
| 42 | * readb/w/l and writeb/w/l. |
| 43 | */ |
| 44 | |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 45 | static inline uint8_t readb(volatile const void *_a) |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 46 | { |
| 47 | dmb(); |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 48 | return *(volatile const uint8_t *)_a; |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 49 | } |
| 50 | |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 51 | static inline uint16_t readw(volatile const void *_a) |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 52 | { |
| 53 | dmb(); |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 54 | return *(volatile const uint16_t *)_a; |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 55 | } |
| 56 | |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 57 | static inline uint32_t readl(volatile const void *_a) |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 58 | { |
| 59 | dmb(); |
Julius Werner | 8a1d11f | 2014-07-17 10:43:15 -0700 | [diff] [blame] | 60 | return *(volatile const uint32_t *)_a; |
Stefan Reinauer | 6a7dd08 | 2013-06-19 12:39:52 -0700 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | static inline void writeb(uint8_t _v, volatile void *_a) |
| 64 | { |
| 65 | dmb(); |
| 66 | *(volatile uint8_t *)_a = _v; |
| 67 | dmb(); |
| 68 | } |
| 69 | |
| 70 | static inline void writew(uint16_t _v, volatile void *_a) |
| 71 | { |
| 72 | dmb(); |
| 73 | *(volatile uint16_t *)_a = _v; |
| 74 | dmb(); |
| 75 | } |
| 76 | |
| 77 | static inline void writel(uint32_t _v, volatile void *_a) |
| 78 | { |
| 79 | dmb(); |
| 80 | *(volatile uint32_t *)_a = _v; |
| 81 | dmb(); |
| 82 | } |
Stefan Reinauer | 8af0d03 | 2012-12-14 13:05:21 -0800 | [diff] [blame] | 83 | |
Daisuke Nojiri | 3949336 | 2015-06-25 16:19:49 -0700 | [diff] [blame] | 84 | static inline uint8_t read8(const void *addr) |
| 85 | { |
| 86 | dmb(); |
| 87 | return *(volatile uint8_t *)addr; |
| 88 | } |
| 89 | |
| 90 | static inline uint16_t read16(const void *addr) |
| 91 | { |
| 92 | dmb(); |
| 93 | return *(volatile uint16_t *)addr; |
| 94 | } |
| 95 | |
| 96 | static inline uint32_t read32(const void *addr) |
| 97 | { |
| 98 | dmb(); |
| 99 | return *(volatile uint32_t *)addr; |
| 100 | } |
| 101 | |
| 102 | static inline void write8(void *addr, uint8_t val) |
| 103 | { |
| 104 | dmb(); |
| 105 | *(volatile uint8_t *)addr = val; |
| 106 | dmb(); |
| 107 | } |
| 108 | |
| 109 | static inline void write16(void *addr, uint16_t val) |
| 110 | { |
| 111 | dmb(); |
| 112 | *(volatile uint16_t *)addr = val; |
| 113 | dmb(); |
| 114 | } |
| 115 | |
| 116 | static inline void write32(void *addr, uint32_t val) |
| 117 | { |
| 118 | dmb(); |
| 119 | *(volatile uint32_t *)addr = val; |
| 120 | dmb(); |
| 121 | } |
| 122 | |
Vadim Bendebury | bc8b4fa | 2014-06-04 10:43:37 -0700 | [diff] [blame] | 123 | #endif |