| 1 | /*
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| 2 | * Copyright (c) 2005 Jakub Vana
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libcia64
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef LIBC_ia64_DDI_H_
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| 36 | #define LIBC_ia64_DDI_H_
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| 37 |
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| 38 | #include <sys/types.h>
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| 39 | #include <libarch/types.h>
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| 40 |
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| 41 | #define IO_SPACE_BOUNDARY ((void *) (64 * 1024))
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| 42 |
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| 43 | uint64_t get_ia64_iospace_address(void);
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| 44 |
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| 45 | extern uint64_t ia64_iospace_address;
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| 46 |
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| 47 | #define IA64_IOSPACE_ADDRESS \
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| 48 | (ia64_iospace_address ? \
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| 49 | ia64_iospace_address : \
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| 50 | (ia64_iospace_address = get_ia64_iospace_address()))
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| 51 |
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| 52 | static inline void pio_write_8(ioport8_t *port, uint8_t v)
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| 53 | {
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| 54 | if (port < (ioport8_t *) IO_SPACE_BOUNDARY) {
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| 55 | uintptr_t prt = (uintptr_t) port;
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| 56 |
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| 57 | *((ioport8_t *)(IA64_IOSPACE_ADDRESS +
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| 58 | ((prt & 0xfff) | ((prt >> 2) << 12)))) = v;
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| 59 | } else {
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| 60 | *port = v;
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| 61 | }
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| 62 |
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| 63 | asm volatile ("mf\n" ::: "memory");
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| 64 | }
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| 65 |
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| 66 | static inline void pio_write_16(ioport16_t *port, uint16_t v)
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| 67 | {
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| 68 | if (port < (ioport16_t *) IO_SPACE_BOUNDARY) {
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| 69 | uintptr_t prt = (uintptr_t) port;
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| 70 |
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| 71 | *((ioport16_t *)(IA64_IOSPACE_ADDRESS +
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| 72 | ((prt & 0xfff) | ((prt >> 2) << 12)))) = v;
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| 73 | } else {
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| 74 | *port = v;
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| 75 | }
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| 76 |
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| 77 | asm volatile ("mf\n" ::: "memory");
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| 78 | }
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| 79 |
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| 80 | static inline void pio_write_32(ioport32_t *port, uint32_t v)
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| 81 | {
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| 82 | if (port < (ioport32_t *) IO_SPACE_BOUNDARY) {
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| 83 | uintptr_t prt = (uintptr_t) port;
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| 84 |
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| 85 | *((ioport32_t *)(IA64_IOSPACE_ADDRESS +
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| 86 | ((prt & 0xfff) | ((prt >> 2) << 12)))) = v;
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| 87 | } else {
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| 88 | *port = v;
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| 89 | }
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| 90 |
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| 91 | asm volatile ("mf\n" ::: "memory");
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| 92 | }
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| 93 |
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| 94 | static inline uint8_t pio_read_8(ioport8_t *port)
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| 95 | {
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| 96 | uint8_t v;
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| 97 |
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| 98 | asm volatile ("mf\n" ::: "memory");
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| 99 |
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| 100 | if (port < (ioport8_t *) IO_SPACE_BOUNDARY) {
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| 101 | uintptr_t prt = (uintptr_t) port;
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| 102 |
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| 103 | v = *((ioport8_t *)(IA64_IOSPACE_ADDRESS +
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| 104 | ((prt & 0xfff) | ((prt >> 2) << 12))));
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| 105 | } else {
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| 106 | v = *port;
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| 107 | }
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| 108 |
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| 109 | return v;
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| 110 | }
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| 111 |
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| 112 | static inline uint16_t pio_read_16(ioport16_t *port)
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| 113 | {
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| 114 | uint16_t v;
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| 115 |
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| 116 | asm volatile ("mf\n" ::: "memory");
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| 117 |
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| 118 | if (port < (ioport16_t *) IO_SPACE_BOUNDARY) {
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| 119 | uintptr_t prt = (uintptr_t) port;
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| 120 |
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| 121 | v = *((ioport16_t *)(IA64_IOSPACE_ADDRESS +
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| 122 | ((prt & 0xfff) | ((prt >> 2) << 12))));
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| 123 | } else {
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| 124 | v = *port;
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| 125 | }
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| 126 |
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| 127 | return v;
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| 128 | }
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| 129 |
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| 130 | static inline uint32_t pio_read_32(ioport32_t *port)
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| 131 | {
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| 132 | uint32_t v;
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| 133 |
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| 134 | asm volatile ("mf\n" ::: "memory");
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| 135 |
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| 136 | if (port < (ioport32_t *) port) {
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| 137 | uintptr_t prt = (uintptr_t) port;
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| 138 |
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| 139 | v = *((ioport32_t *)(IA64_IOSPACE_ADDRESS +
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| 140 | ((prt & 0xfff) | ((prt >> 2) << 12))));
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| 141 | } else {
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| 142 | v = *port;
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| 143 | }
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| 144 |
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| 145 | return v;
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| 146 | }
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| 147 |
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| 148 | #endif
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| 149 |
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| 150 | /** @}
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| 151 | */
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