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madwifi/ath_hal/ah_osdep.h

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/*-
* Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*
* $Id$
*/
#ifndef _ATH_AH_OSDEP_H_
#define _ATH_AH_OSDEP_H_
#include <asm/io.h>
#include "ah_devid.h"
#define __ahdecl
#ifndef __packed
#define __packed __attribute__((__packed__))
#endif
#ifndef __used
#define __used __attribute__((__used__))
#endif
/* Replace void pointers from ah.h with safer specific types */
#define HAL_SOFTC struct ath_softc *
#define HAL_BUS_HANDLE void __iomem *
#define HAL_BUS_TAG struct ar531x_config *
/* Linker-assisted set support */
#define __STRING(x) #x
#define DECLARE_ah_chips \
struct ath_hal_chip *AR5210_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR5211_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR5212_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR5312_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR5416_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR9160_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *AR9280_chip_ptr __attribute__((__weak__)); \
struct ath_hal_chip *const *ah_chips_ptrs[] = { \
&AR5210_chip_ptr, \
&AR5211_chip_ptr, \
&AR5212_chip_ptr, \
&AR5312_chip_ptr, \
&AR5416_chip_ptr, \
&AR9160_chip_ptr, \
&AR9280_chip_ptr, \
NULL \
}
#define DECLARE_ah_rfs \
struct ath_hal_rf *RF2316_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF2317_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF2413_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF2425_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF5111_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF5112_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *RF5413_rf_ptr __attribute__((__weak__)); \
struct ath_hal_rf *const *ah_rfs_ptrs[] = { \
&RF2316_rf_ptr, \
&RF2317_rf_ptr, \
&RF2413_rf_ptr, \
&RF2425_rf_ptr, \
&RF5111_rf_ptr, \
&RF5112_rf_ptr, \
&RF5413_rf_ptr, \
NULL \
}
#define OS_SET_DECLARE(set, ptype) \
DECLARE_##set
#define OS_DATA_SET(set, sym) \
typeof(sym) *sym##_ptr = &sym
#define OS_SET_FOREACH(pvar, set) \
typeof(pvar) *ppvar = set##_ptrs; \
for (pvar = *ppvar; pvar; pvar = *++ppvar) if (*pvar)
/* Byte order/swapping support. */
#define AH_LITTLE_ENDIAN 1234
#define AH_BIG_ENDIAN 4321
#ifndef AH_BYTE_ORDER
/*
* When the .inc file is not available (e.g. when building in the kernel source
* tree), look for some other way to determine the host byte order.
*/
#ifdef __LITTLE_ENDIAN
#define AH_BYTE_ORDER AH_LITTLE_ENDIAN
#endif
#ifdef __BIG_ENDIAN
#define AH_BYTE_ORDER AH_BIG_ENDIAN
#endif
#ifndef AH_BYTE_ORDER
#error "Do not know host byte order"
#endif
#endif /* AH_BYTE_ORDER */
/* 32-bit sparc gets iowrite32() and ioread32() in Linux 2.6.18 */
#if (defined(CONFIG_SPARC32) && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)))
#ifndef iowrite32
#define iowrite32(_val, _addr) writel(_val, _addr)
#endif
#ifndef ioread32
#define ioread32(_addr) readl(_addr)
#endif
#endif
/*
* The HAL programs big-endian platforms to use byte-swapped hardware registers.
* This is done to avoid the byte swapping needed to access PCI devices.
*
* Many big-endian architectures provide I/O functions that avoid byte swapping.
* We use them when possible. Otherwise, we provide replacements. The downside
* or the replacements is that we may be byte-swapping data twice, so we try to
* avoid it.
*
* We use use ioread32() and iowrite32(), which should take care of indirect
* access to the registers.
*/
#if (AH_BYTE_ORDER == AH_BIG_ENDIAN) && \
!defined(CONFIG_GENERIC_IOMAP) && \
!defined(CONFIG_PARISC) && \
!(defined(CONFIG_PPC64) && \
(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14))) && \
!(defined(CONFIG_PPC_MERGE) && \
(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))) && \
!(defined(CONFIG_PPC32) && \
(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27))) && \
!(defined(CONFIG_MIPS) && \
(LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)))
# ifndef iowrite32be
# define iowrite32be(_val, _addr) iowrite32(swab32((_val)), (_addr))
# endif
# ifndef ioread32be
# define ioread32be(_addr) swab32(ioread32((_addr)))
# endif
#endif
/*
* The register accesses are done using target-specific functions when
* debugging is enabled (AH_DEBUG) or it's explicitly requested for the target.
*
* The hardware registers use little-endian byte order natively. Big-endian
* systems are configured by HAL to byte-swap of register reads and writes.
* However, the registers in the areas 0x4000-0x4fff and 0x7000-0x7fff are not
* byte swapped!
*
* Since Linux I/O primitives default to little-endian operations, we only
* need to suppress byte-swapping on big-endian systems outside the area used
* by the PCI clock domain registers.
*/
#if (AH_BYTE_ORDER == AH_BIG_ENDIAN)
# define is_reg_le(__reg) ((0x4000 <= (__reg) && (__reg) < 0x5000) || \
(0x7000 <= (__reg) && (__reg) < 0x8000))
# define _OS_REG_WRITE(_ah, _reg, _val) do { \
if (is_reg_le(_reg)) \
iowrite32((_val), (_ah)->ah_sh + (_reg)); \
else \
iowrite32be((_val), (_ah)->ah_sh + (_reg)); \
} while (0)
# define _OS_REG_READ(_ah, _reg) \
(is_reg_le(_reg) ? \
ioread32((_ah)->ah_sh + (_reg)) : \
ioread32be((_ah)->ah_sh + (_reg)))
#else /* Little endian */
# define _OS_REG_WRITE(_ah, _reg, _val) do { \
iowrite32((_val), (_ah)->ah_sh + (_reg)); \
} while (0)
# define _OS_REG_READ(_ah, _reg) \
ioread32((_ah)->ah_sh + (_reg))
#endif /* Little endian */
/*
* The functions in this section are not intended to be invoked by MadWifi
* driver code, but by the HAL. They are NOT safe to call directly when the
* sc->sc_hal_lock is not held. Use ath_reg_read and ATH_REG_WRITE instead!
*/
#if defined(AH_DEBUG) || defined(AH_REGOPS_FUNC) || defined(AH_DEBUG_ALQ)
#define OS_REG_WRITE(_ah, _reg, _val) ath_hal_reg_write(_ah, _reg, _val)
#define OS_REG_READ(_ah, _reg) ath_hal_reg_read(_ah, _reg)
struct ath_hal;
extern void __ahdecl ath_hal_reg_write(struct ath_hal *ah, u_int reg,
u_int32_t val);
extern u_int32_t __ahdecl ath_hal_reg_read(struct ath_hal *ah, u_int reg);
#else
#define OS_REG_WRITE(_ah, _reg, _val) _OS_REG_WRITE(_ah, _reg, _val)
#define OS_REG_READ(_ah, _reg) _OS_REG_READ(_ah, _reg)
#endif /* AH_DEBUG || AH_REGFUNC || AH_DEBUG_ALQ */
/* Delay n microseconds. */
extern void __ahdecl ath_hal_delay(int);
#define OS_DELAY(_n) ath_hal_delay(_n)
/* Uptime in milliseconds, used by debugging code only */
#define OS_GETUPTIME(_ah) ((int)(1000 * jiffies / HZ))
#define OS_INLINE __inline
#define OS_MEMZERO(_a, _n) ath_hal_memzero((_a), (_n))
extern void __ahdecl ath_hal_memzero(void *, size_t);
#define OS_MEMCPY(_d, _s, _n) ath_hal_memcpy(_d,_s,_n)
extern void *__ahdecl ath_hal_memcpy(void *, const void *, size_t);
#define __bswap16(val) __swab16(val)
#define __bswap32(val) __swab32(val)
#ifdef AH_DEBUG_ALQ
extern void __ahdecl OS_MARK(struct ath_hal *, u_int id, u_int32_t value);
#else
#define OS_MARK(_ah, _id, _v)
#endif
#define __DECONST(type, var) ((type)(unsigned long)(const void *)(var))
#define __printflike(fmtarg, firstvararg) \
__attribute__((__format__ (__printf__, fmtarg, firstvararg)))
#define __va_list va_list
#undef swap
#endif /* _ATH_AH_OSDEP_H_ */
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