111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
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/*
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* Common Option ROM Functions for C code
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright (c) 2015-2019 Red Hat Inc.
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* Authors:
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* Marc Marí <marc.mari.barcelo@gmail.com>
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* Richard W.M. Jones <rjones@redhat.com>
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* Stefano Garzarella <sgarzare@redhat.com>
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*/
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#ifndef OPTROM_H
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#define OPTROM_H
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#include <stdint.h>
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#include "../../include/standard-headers/linux/qemu_fw_cfg.h"
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#define barrier() asm("" : : : "memory")
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#ifdef __clang__
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#define ADDR32
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#else
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#define ADDR32 "addr32 "
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#endif
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static inline void outb(uint8_t value, uint16_t port)
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{
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asm volatile("outb %0, %w1" : : "a"(value), "Nd"(port));
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}
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static inline void outw(uint16_t value, uint16_t port)
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{
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asm volatile("outw %0, %w1" : : "a"(value), "Nd"(port));
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}
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static inline void outl(uint32_t value, uint16_t port)
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{
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asm volatile("outl %0, %w1" : : "a"(value), "Nd"(port));
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}
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static inline uint8_t inb(uint16_t port)
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{
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uint8_t value;
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asm volatile("inb %w1, %0" : "=a"(value) : "Nd"(port));
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return value;
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}
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static inline uint16_t inw(uint16_t port)
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{
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uint16_t value;
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asm volatile("inw %w1, %0" : "=a"(value) : "Nd"(port));
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return value;
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}
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static inline uint32_t inl(uint16_t port)
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{
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uint32_t value;
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asm volatile("inl %w1, %0" : "=a"(value) : "Nd"(port));
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return value;
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}
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static inline void insb(uint16_t port, uint8_t *buf, uint32_t len)
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{
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asm volatile("rep insb %%dx, %%es:(%%edi)"
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: "+c"(len), "+D"(buf) : "d"(port) : "memory");
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}
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static inline uint32_t bswap32(uint32_t x)
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{
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asm("bswapl %0" : "=r" (x) : "0" (x));
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return x;
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}
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static inline uint64_t bswap64(uint64_t x)
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{
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asm("bswapl %%eax; bswapl %%edx; xchg %%eax, %%edx" : "=A" (x) : "0" (x));
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return x;
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}
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static inline uint64_t cpu_to_be64(uint64_t x)
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{
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return bswap64(x);
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}
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static inline uint32_t cpu_to_be32(uint32_t x)
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{
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return bswap32(x);
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}
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static inline uint32_t be32_to_cpu(uint32_t x)
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{
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return bswap32(x);
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}
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#endif /* OPTROM_H */
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