qemu

FORK: QEMU emulator
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optrom.h (2602B)

      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 Marí <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 */