freebsd-skq/sys/dev/ath/ah_osdep.h
Adrian Chadd f13112ff78 Add placeholder methods for WMI command access (USB, perhaps SDIO later)
which will be needed for AR7010 and AR9287 USB access.

The names differ slightly from Linux and Atheros, for the sake of
consistency.

A lot more work is required in order to convert the 11n HAL support to
fully support USB.
2012-04-25 01:42:22 +00:00

133 lines
4.6 KiB
C

/*-
* Copyright (c) 2002-2008 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.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _ATH_AH_OSDEP_H_
#define _ATH_AH_OSDEP_H_
/*
* Atheros Hardware Access Layer (HAL) OS Dependent Definitions.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/endian.h>
#include <sys/linker_set.h>
#include <machine/bus.h>
/*
* Bus i/o type definitions.
*/
typedef void *HAL_SOFTC;
typedef bus_space_tag_t HAL_BUS_TAG;
typedef bus_space_handle_t HAL_BUS_HANDLE;
/*
* Linker set writearounds for chip and RF backend registration.
*/
#define OS_DATA_SET(set, item) DATA_SET(set, item)
#define OS_SET_DECLARE(set, ptype) SET_DECLARE(set, ptype)
#define OS_SET_FOREACH(pvar, set) SET_FOREACH(pvar, set)
/*
* Delay n microseconds.
*/
#define OS_DELAY(_n) DELAY(_n)
#define OS_INLINE __inline
#define OS_MEMZERO(_a, _n) bzero((_a), (_n))
#define OS_MEMCPY(_d, _s, _n) memcpy(_d,_s,_n)
#define abs(_a) __builtin_abs(_a)
struct ath_hal;
/*
* The hardware registers are native little-endian byte order.
* Big-endian hosts are handled by enabling hardware byte-swap
* of register reads and writes at reset. But the PCI clock
* domain registers are not byte swapped! Thus, on big-endian
* platforms we have to explicitly byte-swap those registers.
* OS_REG_UNSWAPPED identifies the registers that need special handling.
*
* This is not currently used by the FreeBSD HAL osdep code; the HAL
* currently does not configure hardware byteswapping for register space
* accesses and instead does it through the FreeBSD bus space code.
*/
#if _BYTE_ORDER == _BIG_ENDIAN
#define OS_REG_UNSWAPPED(_reg) \
(((_reg) >= 0x4000 && (_reg) < 0x5000) || \
((_reg) >= 0x7000 && (_reg) < 0x8000))
#else /* _BYTE_ORDER == _LITTLE_ENDIAN */
#define OS_REG_UNSWAPPED(_reg) (0)
#endif /* _BYTE_ORDER */
/*
* For USB/SDIO support (where access latencies are quite high);
* some write accesses may be buffered and then flushed when
* either a read is done, or an explicit flush is done.
*
* These are simply placeholders for now.
*/
#define OS_REG_WRITE_BUFFER_ENABLE(_ah) \
do { } while (0)
#define OS_REG_WRITE_BUFFER_DISABLE(_ah) \
do { } while (0)
#define OS_REG_WRITE_BUFFER_FLUSH(_ah) \
do { } while (0)
/*
* Register read/write operations are either handled through
* platform-dependent routines (or when debugging is enabled
* with AH_DEBUG); or they are inline expanded using the macros
* defined below.
*/
#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)
extern void ath_hal_reg_write(struct ath_hal *ah, u_int reg, u_int32_t val);
extern u_int32_t ath_hal_reg_read(struct ath_hal *ah, u_int reg);
#else
#define OS_REG_WRITE(_ah, _reg, _val) \
bus_space_write_4((bus_space_tag_t)(_ah)->ah_st, \
(bus_space_handle_t)(_ah)->ah_sh, (_reg), (_val))
#define OS_REG_READ(_ah, _reg) \
bus_space_read_4((bus_space_tag_t)(_ah)->ah_st, \
(bus_space_handle_t)(_ah)->ah_sh, (_reg))
#endif
#ifdef AH_DEBUG_ALQ
extern void OS_MARK(struct ath_hal *, u_int id, u_int32_t value);
#else
#define OS_MARK(_ah, _id, _v)
#endif
#endif /* _ATH_AH_OSDEP_H_ */