5113f6f70
 김현기
kernel add
|
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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/*
* Copyright (c) 2012 Qualcomm Atheros, 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 "core.h"
#include "cfg80211.h"
#include "debug.h"
static void ath6kl_recovery_work(struct work_struct *work)
{
struct ath6kl *ar = container_of(work, struct ath6kl,
fw_recovery.recovery_work);
ar->state = ATH6KL_STATE_RECOVERY;
del_timer_sync(&ar->fw_recovery.hb_timer);
ath6kl_init_hw_restart(ar);
ar->state = ATH6KL_STATE_ON;
clear_bit(WMI_CTRL_EP_FULL, &ar->flag);
ar->fw_recovery.err_reason = 0;
if (ar->fw_recovery.hb_poll)
mod_timer(&ar->fw_recovery.hb_timer, jiffies +
msecs_to_jiffies(ar->fw_recovery.hb_poll));
}
void ath6kl_recovery_err_notify(struct ath6kl *ar, enum ath6kl_fw_err reason)
{
if (!ar->fw_recovery.enable)
return;
ath6kl_dbg(ATH6KL_DBG_RECOVERY, "Fw error detected, reason:%d
",
reason);
set_bit(reason, &ar->fw_recovery.err_reason);
if (!test_bit(RECOVERY_CLEANUP, &ar->flag) &&
ar->state != ATH6KL_STATE_RECOVERY)
queue_work(ar->ath6kl_wq, &ar->fw_recovery.recovery_work);
}
void ath6kl_recovery_hb_event(struct ath6kl *ar, u32 cookie)
{
if (cookie == ar->fw_recovery.seq_num)
ar->fw_recovery.hb_pending = false;
}
static void ath6kl_recovery_hb_timer(unsigned long data)
{
struct ath6kl *ar = (struct ath6kl *) data;
int err;
if (test_bit(RECOVERY_CLEANUP, &ar->flag) ||
(ar->state == ATH6KL_STATE_RECOVERY))
return;
if (ar->fw_recovery.hb_pending)
ar->fw_recovery.hb_misscnt++;
else
ar->fw_recovery.hb_misscnt = 0;
if (ar->fw_recovery.hb_misscnt > ATH6KL_HB_RESP_MISS_THRES) {
ar->fw_recovery.hb_misscnt = 0;
ar->fw_recovery.seq_num = 0;
ar->fw_recovery.hb_pending = false;
ath6kl_recovery_err_notify(ar, ATH6KL_FW_HB_RESP_FAILURE);
return;
}
ar->fw_recovery.seq_num++;
ar->fw_recovery.hb_pending = true;
err = ath6kl_wmi_get_challenge_resp_cmd(ar->wmi,
ar->fw_recovery.seq_num, 0);
if (err)
ath6kl_warn("Failed to send hb challenge request, err:%d
",
err);
mod_timer(&ar->fw_recovery.hb_timer, jiffies +
msecs_to_jiffies(ar->fw_recovery.hb_poll));
}
void ath6kl_recovery_init(struct ath6kl *ar)
{
struct ath6kl_fw_recovery *recovery = &ar->fw_recovery;
clear_bit(RECOVERY_CLEANUP, &ar->flag);
INIT_WORK(&recovery->recovery_work, ath6kl_recovery_work);
recovery->seq_num = 0;
recovery->hb_misscnt = 0;
ar->fw_recovery.hb_pending = false;
ar->fw_recovery.hb_timer.function = ath6kl_recovery_hb_timer;
ar->fw_recovery.hb_timer.data = (unsigned long) ar;
init_timer_deferrable(&ar->fw_recovery.hb_timer);
if (ar->fw_recovery.hb_poll)
mod_timer(&ar->fw_recovery.hb_timer, jiffies +
msecs_to_jiffies(ar->fw_recovery.hb_poll));
}
void ath6kl_recovery_cleanup(struct ath6kl *ar)
{
if (!ar->fw_recovery.enable)
return;
set_bit(RECOVERY_CLEANUP, &ar->flag);
del_timer_sync(&ar->fw_recovery.hb_timer);
cancel_work_sync(&ar->fw_recovery.recovery_work);
}
void ath6kl_recovery_suspend(struct ath6kl *ar)
{
if (!ar->fw_recovery.enable)
return;
ath6kl_recovery_cleanup(ar);
if (!ar->fw_recovery.err_reason)
return;
/* Process pending fw error detection */
ar->fw_recovery.err_reason = 0;
WARN_ON(ar->state != ATH6KL_STATE_ON);
ar->state = ATH6KL_STATE_RECOVERY;
ath6kl_init_hw_restart(ar);
ar->state = ATH6KL_STATE_ON;
}
void ath6kl_recovery_resume(struct ath6kl *ar)
{
if (!ar->fw_recovery.enable)
return;
clear_bit(RECOVERY_CLEANUP, &ar->flag);
if (!ar->fw_recovery.hb_poll)
return;
ar->fw_recovery.hb_pending = false;
ar->fw_recovery.seq_num = 0;
ar->fw_recovery.hb_misscnt = 0;
mod_timer(&ar->fw_recovery.hb_timer,
jiffies + msecs_to_jiffies(ar->fw_recovery.hb_poll));
}
|