1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* 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.
*/
#include "ar9170.h"
#include "cmd.h"
int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len)
{
int err;
if (unlikely(!IS_ACCEPTING_CMD(ar)))
return 0;
err = ar->exec_cmd(ar, AR9170_CMD_WMEM, len, (u8 *) data, 0, NULL);
if (err)
printk(KERN_DEBUG "%s: writing memory failed\n",
wiphy_name(ar->hw->wiphy));
return err;
}
int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val)
{
__le32 buf[2] = {
cpu_to_le32(reg),
cpu_to_le32(val),
};
int err;
if (unlikely(!IS_ACCEPTING_CMD(ar)))
return 0;
err = ar->exec_cmd(ar, AR9170_CMD_WREG, sizeof(buf),
(u8 *) buf, 0, NULL);
if (err)
printk(KERN_DEBUG "%s: writing reg %#x (val %#x) failed\n",
wiphy_name(ar->hw->wiphy), reg, val);
return err;
}
static int ar9170_read_mreg(struct ar9170 *ar, int nregs,
const u32 *regs, u32 *out)
{
int i, err;
__le32 *offs, *res;
if (unlikely(!IS_ACCEPTING_CMD(ar)))
return 0;
/* abuse "out" for the register offsets, must be same length */
offs = (__le32 *)out;
for (i = 0; i < nregs; i++)
offs[i] = cpu_to_le32(regs[i]);
/* also use the same buffer for the input */
res = (__le32 *)out;
err = ar->exec_cmd(ar, AR9170_CMD_RREG,
4 * nregs, (u8 *)offs,
4 * nregs, (u8 *)res);
if (err)
return err;
/* convert result to cpu endian */
for (i = 0; i < nregs; i++)
out[i] = le32_to_cpu(res[i]);
return 0;
}
int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val)
{
return ar9170_read_mreg(ar, 1, ®, val);
}
int ar9170_echo_test(struct ar9170 *ar, u32 v)
{
__le32 echobuf = cpu_to_le32(v);
__le32 echores;
int err;
if (unlikely(!IS_ACCEPTING_CMD(ar)))
return -ENODEV;
err = ar->exec_cmd(ar, AR9170_CMD_ECHO,
4, (u8 *)&echobuf,
4, (u8 *)&echores);
if (err)
return err;
if (echobuf != echores)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL_GPL(ar9170_echo_test);
|
