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6dfa0143 SG |
1 | /* |
2 | * Common Option ROM Functions for C code | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
16 | * | |
17 | * Copyright (c) 2015-2019 Red Hat Inc. | |
18 | * Authors: | |
19 | * Marc MarĂ <marc.mari.barcelo@gmail.com> | |
20 | * Richard W.M. Jones <rjones@redhat.com> | |
21 | * Stefano Garzarella <sgarzare@redhat.com> | |
22 | */ | |
23 | ||
24 | #ifndef OPTROM_H | |
25 | #define OPTROM_H | |
26 | ||
27 | #include <stdint.h> | |
28 | #include "../../include/standard-headers/linux/qemu_fw_cfg.h" | |
29 | ||
30 | #define barrier() asm("" : : : "memory") | |
31 | ||
32 | #ifdef __clang__ | |
33 | #define ADDR32 | |
34 | #else | |
35 | #define ADDR32 "addr32 " | |
36 | #endif | |
37 | ||
38 | static inline void outb(uint8_t value, uint16_t port) | |
39 | { | |
40 | asm volatile("outb %0, %w1" : : "a"(value), "Nd"(port)); | |
41 | } | |
42 | ||
43 | static inline void outw(uint16_t value, uint16_t port) | |
44 | { | |
45 | asm volatile("outw %0, %w1" : : "a"(value), "Nd"(port)); | |
46 | } | |
47 | ||
48 | static inline void outl(uint32_t value, uint16_t port) | |
49 | { | |
50 | asm volatile("outl %0, %w1" : : "a"(value), "Nd"(port)); | |
51 | } | |
52 | ||
53 | static inline uint8_t inb(uint16_t port) | |
54 | { | |
55 | uint8_t value; | |
56 | ||
57 | asm volatile("inb %w1, %0" : "=a"(value) : "Nd"(port)); | |
58 | return value; | |
59 | } | |
60 | ||
61 | static inline uint16_t inw(uint16_t port) | |
62 | { | |
63 | uint16_t value; | |
64 | ||
65 | asm volatile("inw %w1, %0" : "=a"(value) : "Nd"(port)); | |
66 | return value; | |
67 | } | |
68 | ||
69 | static inline uint32_t inl(uint16_t port) | |
70 | { | |
71 | uint32_t value; | |
72 | ||
73 | asm volatile("inl %w1, %0" : "=a"(value) : "Nd"(port)); | |
74 | return value; | |
75 | } | |
76 | ||
77 | static inline void insb(uint16_t port, uint8_t *buf, uint32_t len) | |
78 | { | |
79 | asm volatile("rep insb %%dx, %%es:(%%edi)" | |
80 | : "+c"(len), "+D"(buf) : "d"(port) : "memory"); | |
81 | } | |
82 | ||
83 | static inline uint32_t bswap32(uint32_t x) | |
84 | { | |
85 | asm("bswapl %0" : "=r" (x) : "0" (x)); | |
86 | return x; | |
87 | } | |
88 | ||
89 | static inline uint64_t bswap64(uint64_t x) | |
90 | { | |
91 | asm("bswapl %%eax; bswapl %%edx; xchg %%eax, %%edx" : "=A" (x) : "0" (x)); | |
92 | return x; | |
93 | } | |
94 | ||
95 | static inline uint64_t cpu_to_be64(uint64_t x) | |
96 | { | |
97 | return bswap64(x); | |
98 | } | |
99 | ||
100 | static inline uint32_t cpu_to_be32(uint32_t x) | |
101 | { | |
102 | return bswap32(x); | |
103 | } | |
104 | ||
105 | static inline uint32_t be32_to_cpu(uint32_t x) | |
106 | { | |
107 | return bswap32(x); | |
108 | } | |
109 | ||
110 | #endif /* OPTROM_H */ |