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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009 Carl-Daniel Hailfinger
*
* 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; version 2 of the License.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Header file for hardware access and OS abstraction. Included from flash.h.
*/
#ifndef __HWACCESS_H__
#define __HWACCESS_H__ 1
#if defined (__i386__) || defined (__x86_64__)
#if defined(__GLIBC__)
#include <sys/io.h>
#endif
#endif
#if NEED_PCI == 1
/*
* libpci headers use the variable name "index" which triggers shadowing
* warnings on systems which have the index() function in a default #include
* or as builtin.
*/
#define index shadow_workaround_index
#include <pci/pci.h>
#undef index
#endif
#if defined (__i386__) || defined (__x86_64__)
/* All x86 is little-endian. */
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)
/* MIPS can be either endian. */
#if defined (__MIPSEL) || defined (__MIPSEL__) || defined (_MIPSEL) || defined (MIPSEL)
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif defined (__MIPSEB) || defined (__MIPSEB__) || defined (_MIPSEB) || defined (MIPSEB)
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
/* PowerPC can be either endian. */
#if defined (_BIG_ENDIAN) || defined (__BIG_ENDIAN__)
#define __FLASHROM_BIG_ENDIAN__ 1
/* Error checking in case some weird header has #defines for LE as well. */
#if defined (_LITTLE_ENDIAN) || defined (__LITTLE_ENDIAN__)
#error Conflicting endianness #define
#endif
#else
#error Little-endian PowerPC #defines are unknown
#endif
#endif
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
/* Nonstandard libc-specific macros for determining endianness. */
#if defined(__GLIBC__)
#include <endian.h>
#if BYTE_ORDER == LITTLE_ENDIAN
#define __FLASHROM_LITTLE_ENDIAN__ 1
#elif BYTE_ORDER == BIG_ENDIAN
#define __FLASHROM_BIG_ENDIAN__ 1
#endif
#endif
#endif
#if !defined (__FLASHROM_BIG_ENDIAN__) && !defined (__FLASHROM_LITTLE_ENDIAN__)
#error Unable to determine endianness. Please add support for your arch or libc.
#endif
#define ___constant_swab8(x) ((uint8_t) ( \
(((uint8_t)(x) & (uint8_t)0xffU))))
#define ___constant_swab16(x) ((uint16_t) ( \
(((uint16_t)(x) & (uint16_t)0x00ffU) << 8) | \
(((uint16_t)(x) & (uint16_t)0xff00U) >> 8)))
#define ___constant_swab32(x) ((uint32_t) ( \
(((uint32_t)(x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(x) & (uint32_t)0xff000000UL) >> 24)))
#define ___constant_swab64(x) ((uint64_t) ( \
(((uint64_t)(x) & (uint64_t)0x00000000000000ffULL) << 56) | \
(((uint64_t)(x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
(((uint64_t)(x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
(((uint64_t)(x) & (uint64_t)0x00000000ff000000ULL) << 8) | \
(((uint64_t)(x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \
(((uint64_t)(x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
(((uint64_t)(x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
(((uint64_t)(x) & (uint64_t)0xff00000000000000ULL) >> 56)))
#if defined (__FLASHROM_BIG_ENDIAN__)
#define cpu_to_le(bits) \
static inline uint##bits##_t cpu_to_le##bits(uint##bits##_t val) \
{ \
return ___constant_swab##bits(val); \
}
cpu_to_le(8)
cpu_to_le(16)
cpu_to_le(32)
cpu_to_le(64)
#define cpu_to_be8
#define cpu_to_be16
#define cpu_to_be32
#define cpu_to_be64
#elif defined (__FLASHROM_LITTLE_ENDIAN__)
#define cpu_to_be(bits) \
static inline uint##bits##_t cpu_to_be##bits(uint##bits##_t val) \
{ \
return ___constant_swab##bits(val); \
}
cpu_to_be(8)
cpu_to_be(16)
cpu_to_be(32)
cpu_to_be(64)
#define cpu_to_le8
#define cpu_to_le16
#define cpu_to_le32
#define cpu_to_le64
#else
#error Could not determine endianness.
#endif
#define be_to_cpu8 cpu_to_be8
#define be_to_cpu16 cpu_to_be16
#define be_to_cpu32 cpu_to_be32
#define be_to_cpu64 cpu_to_be64
#define le_to_cpu8 cpu_to_le8
#define le_to_cpu16 cpu_to_le16
#define le_to_cpu32 cpu_to_le32
#define le_to_cpu64 cpu_to_le64
#if NEED_PCI == 1
#if defined (__i386__) || defined (__x86_64__)
#define __FLASHROM_HAVE_OUTB__ 1
/* for iopl and outb under Solaris */
#if defined (__sun) && (defined(__i386) || defined(__amd64))
#include <strings.h>
#include <sys/sysi86.h>
#include <sys/psw.h>
#include <asm/sunddi.h>
#endif
#if (defined(__MACH__) && defined(__APPLE__))
#define __DARWIN__
#endif
/* Clarification about OUTB/OUTW/OUTL argument order:
* OUT[BWL](val, port)
*/
#if defined(__FreeBSD__) || defined(__DragonFly__)
#include <machine/cpufunc.h>
#define off64_t off_t
#define lseek64 lseek
#define OUTB(x, y) do { u_int outb_tmp = (y); outb(outb_tmp, (x)); } while (0)
#define OUTW(x, y) do { u_int outw_tmp = (y); outw(outw_tmp, (x)); } while (0)
#define OUTL(x, y) do { u_int outl_tmp = (y); outl(outl_tmp, (x)); } while (0)
#define INB(x) __extension__ ({ u_int inb_tmp = (x); inb(inb_tmp); })
#define INW(x) __extension__ ({ u_int inw_tmp = (x); inw(inw_tmp); })
#define INL(x) __extension__ ({ u_int inl_tmp = (x); inl(inl_tmp); })
#else
#if defined(__DARWIN__)
#include <DirectIO/darwinio.h>
#define off64_t off_t
#define lseek64 lseek
#endif
#if defined (__sun) && (defined(__i386) || defined(__amd64))
/* Note different order for outb */
#define OUTB(x,y) outb(y, x)
#define OUTW(x,y) outw(y, x)
#define OUTL(x,y) outl(y, x)
#define INB inb
#define INW inw
#define INL inl
#else
#ifdef __DJGPP__
#include <pc.h>
#define OUTB(x,y) outportb(y, x)
#define OUTW(x,y) outportw(y, x)
#define OUTL(x,y) outportl(y, x)
#define INB inportb
#define INW inportw
#define INL inportl
#else
#define OUTB outb
#define OUTW outw
#define OUTL outl
#define INB inb
#define INW inw
#define INL inl
#endif
#endif
#endif
#if defined(__NetBSD__) || defined (__OpenBSD__)
#define off64_t off_t
#define lseek64 lseek
#if defined(__i386__) || defined(__x86_64__)
#include <sys/types.h>
#include <machine/sysarch.h>
#if defined(__NetBSD__)
#if defined(__i386__)
#define iopl i386_iopl
#elif defined(__x86_64__)
#define iopl x86_64_iopl
#endif
#elif defined (__OpenBSD__)
#if defined(__i386__)
#define iopl i386_iopl
#elif defined(__amd64__)
#define iopl amd64_iopl
#endif
#endif
#include <stdint.h>
static inline void outb(uint8_t value, uint16_t port)
{
asm volatile ("outb %b0,%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 void outw(uint16_t value, uint16_t port)
{
asm volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
}
static inline uint16_t inw(uint16_t port)
{
uint16_t value;
asm volatile ("inw %w1,%0":"=a" (value):"Nd" (port));
return value;
}
static inline void outl(uint32_t value, uint16_t port)
{
asm volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
}
static inline uint32_t inl(uint16_t port)
{
uint32_t value;
asm volatile ("inl %1,%0":"=a" (value):"Nd" (port));
return value;
}
#endif
#endif
#if !defined(__DARWIN__) && !defined(__FreeBSD__) && !defined(__DragonFly__)
typedef struct { uint32_t hi, lo; } msr_t;
msr_t rdmsr(int addr);
int wrmsr(int addr, msr_t msr);
#endif
#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD already has conflicting definitions for wrmsr/rdmsr. */
#undef rdmsr
#undef wrmsr
#define rdmsr freebsd_rdmsr
#define wrmsr freebsd_wrmsr
typedef struct { uint32_t hi, lo; } msr_t;
msr_t freebsd_rdmsr(int addr);
int freebsd_wrmsr(int addr, msr_t msr);
#endif
#elif defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || defined(__ppc64__)
/* PCI port I/O is not yet implemented on PowerPC. */
#elif defined (__mips) || defined (__mips__) || defined (_mips) || defined (mips)
/* PCI port I/O is not yet implemented on MIPS. */
#else
#error Unknown architecture, please check if it supports PCI port IO.
#endif
#endif
#endif /* !__HWACCESS_H__ */
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