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Diffstat (limited to 'drivers/net/wireless/ar9170/cmd.h')
-rw-r--r-- | drivers/net/wireless/ar9170/cmd.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/net/wireless/ar9170/cmd.h b/drivers/net/wireless/ar9170/cmd.h new file mode 100644 index 000000000000..a4f0e50e52b4 --- /dev/null +++ b/drivers/net/wireless/ar9170/cmd.h | |||
@@ -0,0 +1,91 @@ | |||
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 */ | ||
44 | int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len); | ||
45 | int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val); | ||
46 | int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val); | ||
47 | int 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) \ | ||
56 | do { \ | ||
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 */ | ||