181af38703
ar9170_op_get_tsf: handle a carry from TSF_L into TSF_H by reading TSF_H twice. Signed-off-by: Joerg Albert <jal2@gmx.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/*
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* Atheros AR9170 driver
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*
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* Basic HW register/memory/command access functions
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*
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* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, see
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* http://www.gnu.org/licenses/.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* Copyright (c) 2007-2008 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef __CMD_H
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#define __CMD_H
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#include "ar9170.h"
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/* basic HW access */
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int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len);
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int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
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int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val);
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int ar9170_read_mreg(struct ar9170 *ar, int nregs, const u32 *regs, u32 *out);
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int ar9170_echo_test(struct ar9170 *ar, u32 v);
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/*
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* Macros to facilitate writing multiple registers in a single
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* write-combining USB command. Note that when the first group
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* fails the whole thing will fail without any others attempted,
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* but you won't know which write in the group failed.
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*/
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#define ar9170_regwrite_begin(ar) \
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do { \
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int __nreg = 0, __err = 0; \
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struct ar9170 *__ar = ar;
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#define ar9170_regwrite(r, v) do { \
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__ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \
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__ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \
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__nreg++; \
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if ((__nreg >= PAYLOAD_MAX/2)) { \
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if (IS_ACCEPTING_CMD(__ar)) \
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__err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
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8 * __nreg, \
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(u8 *) &__ar->cmdbuf[1], \
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0, NULL); \
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__nreg = 0; \
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if (__err) \
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goto __regwrite_out; \
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} \
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} while (0)
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#define ar9170_regwrite_finish() \
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__regwrite_out : \
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if (__nreg) { \
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if (IS_ACCEPTING_CMD(__ar)) \
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__err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
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8 * __nreg, \
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(u8 *) &__ar->cmdbuf[1], \
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0, NULL); \
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__nreg = 0; \
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}
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#define ar9170_regwrite_result() \
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__err; \
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} while (0);
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#endif /* __CMD_H */
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