mirror of
https://github.com/qemu/qemu.git
synced 2025-10-31 12:07:31 +00:00
6dfa01437b
In order to allow other option roms to use these common useful functions and definitions, this patch put them in two new C header files called optrom.h and optrom_fw_cfg.h. We also add useful out*() in*() functions for different size, and new fw_cfg functions to use when DMA feature is not available. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
|
|
* Common Option ROM Functions for C code
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Copyright (c) 2015-2019 Red Hat Inc.
|
|
* Authors:
|
|
* Marc Marí <marc.mari.barcelo@gmail.com>
|
|
* Richard W.M. Jones <rjones@redhat.com>
|
|
* Stefano Garzarella <sgarzare@redhat.com>
|
|
*/
|
|
|
|
#ifndef OPTROM_H
|
|
#define OPTROM_H
|
|
|
|
#include <stdint.h>
|
|
#include "../../include/standard-headers/linux/qemu_fw_cfg.h"
|
|
|
|
#define barrier() asm("" : : : "memory")
|
|
|
|
#ifdef __clang__
|
|
#define ADDR32
|
|
#else
|
|
#define ADDR32 "addr32 "
|
|
#endif
|
|
|
|
static inline void outb(uint8_t value, uint16_t port)
|
|
{
|
|
asm volatile("outb %0, %w1" : : "a"(value), "Nd"(port));
|
|
}
|
|
|
|
static inline void outw(uint16_t value, uint16_t port)
|
|
{
|
|
asm volatile("outw %0, %w1" : : "a"(value), "Nd"(port));
|
|
}
|
|
|
|
static inline void outl(uint32_t value, uint16_t port)
|
|
{
|
|
asm volatile("outl %0, %w1" : : "a"(value), "Nd"(port));
|
|
}
|
|
|
|
static inline uint8_t inb(uint16_t port)
|
|
{
|
|
uint8_t value;
|
|
|
|
asm volatile("inb %w1, %0" : "=a"(value) : "Nd"(port));
|
|
return value;
|
|
}
|
|
|
|
static inline uint16_t inw(uint16_t port)
|
|
{
|
|
uint16_t value;
|
|
|
|
asm volatile("inw %w1, %0" : "=a"(value) : "Nd"(port));
|
|
return value;
|
|
}
|
|
|
|
static inline uint32_t inl(uint16_t port)
|
|
{
|
|
uint32_t value;
|
|
|
|
asm volatile("inl %w1, %0" : "=a"(value) : "Nd"(port));
|
|
return value;
|
|
}
|
|
|
|
static inline void insb(uint16_t port, uint8_t *buf, uint32_t len)
|
|
{
|
|
asm volatile("rep insb %%dx, %%es:(%%edi)"
|
|
: "+c"(len), "+D"(buf) : "d"(port) : "memory");
|
|
}
|
|
|
|
static inline uint32_t bswap32(uint32_t x)
|
|
{
|
|
asm("bswapl %0" : "=r" (x) : "0" (x));
|
|
return x;
|
|
}
|
|
|
|
static inline uint64_t bswap64(uint64_t x)
|
|
{
|
|
asm("bswapl %%eax; bswapl %%edx; xchg %%eax, %%edx" : "=A" (x) : "0" (x));
|
|
return x;
|
|
}
|
|
|
|
static inline uint64_t cpu_to_be64(uint64_t x)
|
|
{
|
|
return bswap64(x);
|
|
}
|
|
|
|
static inline uint32_t cpu_to_be32(uint32_t x)
|
|
{
|
|
return bswap32(x);
|
|
}
|
|
|
|
static inline uint32_t be32_to_cpu(uint32_t x)
|
|
{
|
|
return bswap32(x);
|
|
}
|
|
|
|
#endif /* OPTROM_H */
|