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/*
* Atheros AR9170 driver
*
* Basic HW register/memory/command access functions
*
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
*
* 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; see the file COPYING. If not, see
* http://www.gnu.org/licenses/.
*
* This file incorporates work covered by the following copyright and
* permission notice:
* Copyright (c) 2007-2008 Atheros Communications, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __CMD_H
#define __CMD_H
#include "ar9170.h"
/* basic HW access */
int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len);
int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val);
int ar9170_echo_test(struct ar9170 *ar, u32 v);
/*
* Macros to facilitate writing multiple registers in a single
* write-combining USB command. Note that when the first group
* fails the whole thing will fail without any others attempted,
* but you won't know which write in the group failed.
*/
#define ar9170_regwrite_begin(ar) \
do { \
int __nreg = 0, __err = 0; \
struct ar9170 *__ar = ar;
#define ar9170_regwrite(r, v) do { \
__ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \
__ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \
__nreg++; \
if ((__nreg >= PAYLOAD_MAX/2)) { \
if (IS_ACCEPTING_CMD(__ar)) \
__err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
8 * __nreg, \
(u8 *) &__ar->cmdbuf[1], \
0, NULL); \
__nreg = 0; \
if (__err) \
goto __regwrite_out; \
} \
} while (0)
#define ar9170_regwrite_finish() \
__regwrite_out : \
if (__nreg) { \
if (IS_ACCEPTING_CMD(__ar)) \
__err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
8 * __nreg, \
(u8 *) &__ar->cmdbuf[1], \
0, NULL); \
__nreg = 0; \
}
#define ar9170_regwrite_result() \
__err; \
} while (0);
#endif /* __CMD_H */
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