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-rw-r--r--drivers/net/wireless/ar9170/cmd.h91
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diff --git a/drivers/net/wireless/ar9170/cmd.h b/drivers/net/wireless/ar9170/cmd.h
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1/*
2 * Atheros AR9170 driver
3 *
4 * Basic HW register/memory/command access functions
5 *
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, see
20 * http://www.gnu.org/licenses/.
21 *
22 * This file incorporates work covered by the following copyright and
23 * permission notice:
24 * Copyright (c) 2007-2008 Atheros Communications, Inc.
25 *
26 * Permission to use, copy, modify, and/or distribute this software for any
27 * purpose with or without fee is hereby granted, provided that the above
28 * copyright notice and this permission notice appear in all copies.
29 *
30 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
31 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
32 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
33 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
34 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
35 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
36 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
37 */
38#ifndef __CMD_H
39#define __CMD_H
40
41#include "ar9170.h"
42
43/* basic HW access */
44int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len);
45int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
46int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val);
47int ar9170_echo_test(struct ar9170 *ar, u32 v);
48
49/*
50 * Macros to facilitate writing multiple registers in a single
51 * write-combining USB command. Note that when the first group
52 * fails the whole thing will fail without any others attempted,
53 * but you won't know which write in the group failed.
54 */
55#define ar9170_regwrite_begin(ar) \
56do { \
57 int __nreg = 0, __err = 0; \
58 struct ar9170 *__ar = ar;
59
60#define ar9170_regwrite(r, v) do { \
61 __ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r); \
62 __ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v); \
63 __nreg++; \
64 if ((__nreg >= PAYLOAD_MAX/2)) { \
65 if (IS_ACCEPTING_CMD(__ar)) \
66 __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
67 8 * __nreg, \
68 (u8 *) &__ar->cmdbuf[1], \
69 0, NULL); \
70 __nreg = 0; \
71 if (__err) \
72 goto __regwrite_out; \
73 } \
74} while (0)
75
76#define ar9170_regwrite_finish() \
77__regwrite_out : \
78 if (__nreg) { \
79 if (IS_ACCEPTING_CMD(__ar)) \
80 __err = ar->exec_cmd(__ar, AR9170_CMD_WREG, \
81 8 * __nreg, \
82 (u8 *) &__ar->cmdbuf[1], \
83 0, NULL); \
84 __nreg = 0; \
85 }
86
87#define ar9170_regwrite_result() \
88 __err; \
89} while (0);
90
91#endif /* __CMD_H */