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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <net/mac80211.h>
#include "iwl-dev.h" /* FIXME: remove */
#include "iwl-debug.h"
#include "iwl-eeprom.h"
#include "iwl-core.h"
const char *get_cmd_string(u8 cmd)
{
switch (cmd) {
IWL_CMD(REPLY_ALIVE);
IWL_CMD(REPLY_ERROR);
IWL_CMD(REPLY_RXON);
IWL_CMD(REPLY_RXON_ASSOC);
IWL_CMD(REPLY_QOS_PARAM);
IWL_CMD(REPLY_RXON_TIMING);
IWL_CMD(REPLY_ADD_STA);
IWL_CMD(REPLY_REMOVE_STA);
IWL_CMD(REPLY_REMOVE_ALL_STA);
IWL_CMD(REPLY_WEPKEY);
IWL_CMD(REPLY_3945_RX);
IWL_CMD(REPLY_TX);
IWL_CMD(REPLY_RATE_SCALE);
IWL_CMD(REPLY_LEDS_CMD);
IWL_CMD(REPLY_TX_LINK_QUALITY_CMD);
IWL_CMD(COEX_PRIORITY_TABLE_CMD);
IWL_CMD(RADAR_NOTIFICATION);
IWL_CMD(REPLY_QUIET_CMD);
IWL_CMD(REPLY_CHANNEL_SWITCH);
IWL_CMD(CHANNEL_SWITCH_NOTIFICATION);
IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD);
IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION);
IWL_CMD(POWER_TABLE_CMD);
IWL_CMD(PM_SLEEP_NOTIFICATION);
IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC);
IWL_CMD(REPLY_SCAN_CMD);
IWL_CMD(REPLY_SCAN_ABORT_CMD);
IWL_CMD(SCAN_START_NOTIFICATION);
IWL_CMD(SCAN_RESULTS_NOTIFICATION);
IWL_CMD(SCAN_COMPLETE_NOTIFICATION);
IWL_CMD(BEACON_NOTIFICATION);
IWL_CMD(REPLY_TX_BEACON);
IWL_CMD(WHO_IS_AWAKE_NOTIFICATION);
IWL_CMD(QUIET_NOTIFICATION);
IWL_CMD(REPLY_TX_PWR_TABLE_CMD);
IWL_CMD(MEASURE_ABORT_NOTIFICATION);
IWL_CMD(REPLY_BT_CONFIG);
IWL_CMD(REPLY_STATISTICS_CMD);
IWL_CMD(STATISTICS_NOTIFICATION);
IWL_CMD(REPLY_CARD_STATE_CMD);
IWL_CMD(CARD_STATE_NOTIFICATION);
IWL_CMD(MISSED_BEACONS_NOTIFICATION);
IWL_CMD(REPLY_CT_KILL_CONFIG_CMD);
IWL_CMD(SENSITIVITY_CMD);
IWL_CMD(REPLY_PHY_CALIBRATION_CMD);
IWL_CMD(REPLY_RX_PHY_CMD);
IWL_CMD(REPLY_RX_MPDU_CMD);
IWL_CMD(REPLY_RX);
IWL_CMD(REPLY_COMPRESSED_BA);
IWL_CMD(CALIBRATION_CFG_CMD);
IWL_CMD(CALIBRATION_RES_NOTIFICATION);
IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION);
IWL_CMD(REPLY_TX_POWER_DBM_CMD);
IWL_CMD(TEMPERATURE_NOTIFICATION);
IWL_CMD(TX_ANT_CONFIGURATION_CMD);
default:
return "UNKNOWN";
}
}
EXPORT_SYMBOL(get_cmd_string);
#define HOST_COMPLETE_TIMEOUT (HZ / 2)
static void iwl_generic_cmd_callback(struct iwl_priv *priv,
struct iwl_device_cmd *cmd,
struct iwl_rx_packet *pkt)
{
if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
IWL_ERR(priv, "Bad return from %s (0x%08X)\n",
get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
return;
}
#ifdef CONFIG_IWLWIFI_DEBUG
switch (cmd->hdr.cmd) {
case REPLY_TX_LINK_QUALITY_CMD:
case SENSITIVITY_CMD:
IWL_DEBUG_HC_DUMP(priv, "back from %s (0x%08X)\n",
get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
break;
default:
IWL_DEBUG_HC(priv, "back from %s (0x%08X)\n",
get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags);
}
#endif
}
static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
int ret;
BUG_ON(!(cmd->flags & CMD_ASYNC));
/* An asynchronous command can not expect an SKB to be set. */
BUG_ON(cmd->flags & CMD_WANT_SKB);
/* Assign a generic callback if one is not provided */
if (!cmd->callback)
cmd->callback = iwl_generic_cmd_callback;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return -EBUSY;
ret = iwl_enqueue_hcmd(priv, cmd);
if (ret < 0) {
IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n",
get_cmd_string(cmd->id), ret);
return ret;
}
return 0;
}
int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
int cmd_idx;
int ret;
BUG_ON(cmd->flags & CMD_ASYNC);
/* A synchronous command can not have a callback set. */
BUG_ON(cmd->callback);
if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) {
IWL_ERR(priv,
"Error sending %s: Already sending a host command\n",
get_cmd_string(cmd->id));
ret = -EBUSY;
goto out;
}
set_bit(STATUS_HCMD_ACTIVE, &priv->status);
cmd_idx = iwl_enqueue_hcmd(priv, cmd);
if (cmd_idx < 0) {
ret = cmd_idx;
IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n",
get_cmd_string(cmd->id), ret);
goto out;
}
ret = wait_event_interruptible_timeout(priv->wait_command_queue,
!test_bit(STATUS_HCMD_ACTIVE, &priv->status),
HOST_COMPLETE_TIMEOUT);
if (!ret) {
if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) {
IWL_ERR(priv,
"Error sending %s: time out after %dms.\n",
get_cmd_string(cmd->id),
jiffies_to_msecs(HOST_COMPLETE_TIMEOUT));
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
ret = -ETIMEDOUT;
goto cancel;
}
}
if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
IWL_DEBUG_INFO(priv, "Command %s aborted: RF KILL Switch\n",
get_cmd_string(cmd->id));
ret = -ECANCELED;
goto fail;
}
if (test_bit(STATUS_FW_ERROR, &priv->status)) {
IWL_DEBUG_INFO(priv, "Command %s failed: FW Error\n",
get_cmd_string(cmd->id));
ret = -EIO;
goto fail;
}
if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) {
IWL_ERR(priv, "Error: Response NULL in '%s'\n",
get_cmd_string(cmd->id));
ret = -EIO;
goto cancel;
}
ret = 0;
goto out;
cancel:
if (cmd->flags & CMD_WANT_SKB) {
/*
* Cancel the CMD_WANT_SKB flag for the cmd in the
* TX cmd queue. Otherwise in case the cmd comes
* in later, it will possibly set an invalid
* address (cmd->meta.source).
*/
priv->txq[IWL_CMD_QUEUE_NUM].meta[cmd_idx].flags &=
~CMD_WANT_SKB;
}
fail:
if (cmd->reply_page) {
free_pages(cmd->reply_page, priv->hw_params.rx_page_order);
cmd->reply_page = 0;
}
out:
clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status);
return ret;
}
EXPORT_SYMBOL(iwl_send_cmd_sync);
int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
{
if (cmd->flags & CMD_ASYNC)
return iwl_send_cmd_async(priv, cmd);
return iwl_send_cmd_sync(priv, cmd);
}
EXPORT_SYMBOL(iwl_send_cmd);
int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data)
{
struct iwl_host_cmd cmd = {
.id = id,
.len = len,
.data = data,
};
return iwl_send_cmd_sync(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_cmd_pdu);
int iwl_send_cmd_pdu_async(struct iwl_priv *priv,
u8 id, u16 len, const void *data,
void (*callback)(struct iwl_priv *priv,
struct iwl_device_cmd *cmd,
struct iwl_rx_packet *pkt))
{
struct iwl_host_cmd cmd = {
.id = id,
.len = len,
.data = data,
};
cmd.flags |= CMD_ASYNC;
cmd.callback = callback;
return iwl_send_cmd_async(priv, &cmd);
}
EXPORT_SYMBOL(iwl_send_cmd_pdu_async);
|
