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857485c0 TW |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
901069c7 | 5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
857485c0 TW |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
857485c0 TW |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | *****************************************************************************/ | |
28 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/module.h> | |
d43c36dc | 31 | #include <linux/sched.h> |
857485c0 TW |
32 | #include <net/mac80211.h> |
33 | ||
3e0d4cb1 | 34 | #include "iwl-dev.h" /* FIXME: remove */ |
857485c0 TW |
35 | #include "iwl-debug.h" |
36 | #include "iwl-eeprom.h" | |
37 | #include "iwl-core.h" | |
38 | ||
39 | ||
857485c0 TW |
40 | const char *get_cmd_string(u8 cmd) |
41 | { | |
42 | switch (cmd) { | |
43 | IWL_CMD(REPLY_ALIVE); | |
44 | IWL_CMD(REPLY_ERROR); | |
45 | IWL_CMD(REPLY_RXON); | |
46 | IWL_CMD(REPLY_RXON_ASSOC); | |
47 | IWL_CMD(REPLY_QOS_PARAM); | |
48 | IWL_CMD(REPLY_RXON_TIMING); | |
49 | IWL_CMD(REPLY_ADD_STA); | |
50 | IWL_CMD(REPLY_REMOVE_STA); | |
51 | IWL_CMD(REPLY_REMOVE_ALL_STA); | |
947279ee | 52 | IWL_CMD(REPLY_TXFIFO_FLUSH); |
0a0bed1d | 53 | IWL_CMD(REPLY_WEPKEY); |
857485c0 | 54 | IWL_CMD(REPLY_TX); |
857485c0 TW |
55 | IWL_CMD(REPLY_LEDS_CMD); |
56 | IWL_CMD(REPLY_TX_LINK_QUALITY_CMD); | |
7c616cba | 57 | IWL_CMD(COEX_PRIORITY_TABLE_CMD); |
fe1bcbfd WYG |
58 | IWL_CMD(COEX_MEDIUM_NOTIFICATION); |
59 | IWL_CMD(COEX_EVENT_CMD); | |
857485c0 TW |
60 | IWL_CMD(REPLY_QUIET_CMD); |
61 | IWL_CMD(REPLY_CHANNEL_SWITCH); | |
62 | IWL_CMD(CHANNEL_SWITCH_NOTIFICATION); | |
63 | IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD); | |
64 | IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION); | |
65 | IWL_CMD(POWER_TABLE_CMD); | |
66 | IWL_CMD(PM_SLEEP_NOTIFICATION); | |
67 | IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC); | |
68 | IWL_CMD(REPLY_SCAN_CMD); | |
69 | IWL_CMD(REPLY_SCAN_ABORT_CMD); | |
70 | IWL_CMD(SCAN_START_NOTIFICATION); | |
71 | IWL_CMD(SCAN_RESULTS_NOTIFICATION); | |
72 | IWL_CMD(SCAN_COMPLETE_NOTIFICATION); | |
73 | IWL_CMD(BEACON_NOTIFICATION); | |
74 | IWL_CMD(REPLY_TX_BEACON); | |
75 | IWL_CMD(WHO_IS_AWAKE_NOTIFICATION); | |
76 | IWL_CMD(QUIET_NOTIFICATION); | |
77 | IWL_CMD(REPLY_TX_PWR_TABLE_CMD); | |
78 | IWL_CMD(MEASURE_ABORT_NOTIFICATION); | |
79 | IWL_CMD(REPLY_BT_CONFIG); | |
80 | IWL_CMD(REPLY_STATISTICS_CMD); | |
81 | IWL_CMD(STATISTICS_NOTIFICATION); | |
82 | IWL_CMD(REPLY_CARD_STATE_CMD); | |
83 | IWL_CMD(CARD_STATE_NOTIFICATION); | |
84 | IWL_CMD(MISSED_BEACONS_NOTIFICATION); | |
85 | IWL_CMD(REPLY_CT_KILL_CONFIG_CMD); | |
86 | IWL_CMD(SENSITIVITY_CMD); | |
87 | IWL_CMD(REPLY_PHY_CALIBRATION_CMD); | |
88 | IWL_CMD(REPLY_RX_PHY_CMD); | |
89 | IWL_CMD(REPLY_RX_MPDU_CMD); | |
90 | IWL_CMD(REPLY_RX); | |
91 | IWL_CMD(REPLY_COMPRESSED_BA); | |
7c616cba TW |
92 | IWL_CMD(CALIBRATION_CFG_CMD); |
93 | IWL_CMD(CALIBRATION_RES_NOTIFICATION); | |
94 | IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION); | |
ebbbdc3f | 95 | IWL_CMD(REPLY_TX_POWER_DBM_CMD); |
1a5c3d61 JS |
96 | IWL_CMD(TEMPERATURE_NOTIFICATION); |
97 | IWL_CMD(TX_ANT_CONFIGURATION_CMD); | |
0288d237 JB |
98 | IWL_CMD(REPLY_BT_COEX_PROFILE_NOTIF); |
99 | IWL_CMD(REPLY_BT_COEX_PRIO_TABLE); | |
100 | IWL_CMD(REPLY_BT_COEX_PROT_ENV); | |
946ba30d JB |
101 | IWL_CMD(REPLY_WIPAN_PARAMS); |
102 | IWL_CMD(REPLY_WIPAN_RXON); | |
103 | IWL_CMD(REPLY_WIPAN_RXON_TIMING); | |
104 | IWL_CMD(REPLY_WIPAN_RXON_ASSOC); | |
105 | IWL_CMD(REPLY_WIPAN_QOS_PARAM); | |
106 | IWL_CMD(REPLY_WIPAN_WEPKEY); | |
107 | IWL_CMD(REPLY_WIPAN_P2P_CHANNEL_SWITCH); | |
108 | IWL_CMD(REPLY_WIPAN_NOA_NOTIFICATION); | |
311dce71 | 109 | IWL_CMD(REPLY_WIPAN_DEACTIVATION_COMPLETE); |
857485c0 TW |
110 | default: |
111 | return "UNKNOWN"; | |
112 | ||
113 | } | |
114 | } | |
857485c0 | 115 | |
81704d2d | 116 | #define HOST_COMPLETE_TIMEOUT (2 * HZ) |
857485c0 | 117 | |
5696aea6 JB |
118 | static void iwl_generic_cmd_callback(struct iwl_priv *priv, |
119 | struct iwl_device_cmd *cmd, | |
2f301227 | 120 | struct iwl_rx_packet *pkt) |
0472f887 | 121 | { |
0472f887 | 122 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
15b1687c | 123 | IWL_ERR(priv, "Bad return from %s (0x%08X)\n", |
0472f887 | 124 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
5696aea6 | 125 | return; |
0472f887 EG |
126 | } |
127 | ||
ded2ae7c EK |
128 | #ifdef CONFIG_IWLWIFI_DEBUG |
129 | switch (cmd->hdr.cmd) { | |
130 | case REPLY_TX_LINK_QUALITY_CMD: | |
131 | case SENSITIVITY_CMD: | |
e1623446 | 132 | IWL_DEBUG_HC_DUMP(priv, "back from %s (0x%08X)\n", |
ded2ae7c | 133 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
5696aea6 | 134 | break; |
ded2ae7c | 135 | default: |
e1623446 | 136 | IWL_DEBUG_HC(priv, "back from %s (0x%08X)\n", |
ded2ae7c EK |
137 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
138 | } | |
139 | #endif | |
0472f887 EG |
140 | } |
141 | ||
857485c0 TW |
142 | static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
143 | { | |
144 | int ret; | |
145 | ||
3e41ace5 JB |
146 | if (WARN_ON(!(cmd->flags & CMD_ASYNC))) |
147 | return -EINVAL; | |
857485c0 TW |
148 | |
149 | /* An asynchronous command can not expect an SKB to be set. */ | |
3e41ace5 JB |
150 | if (WARN_ON(cmd->flags & CMD_WANT_SKB)) |
151 | return -EINVAL; | |
857485c0 | 152 | |
0472f887 | 153 | /* Assign a generic callback if one is not provided */ |
c2acea8e JB |
154 | if (!cmd->callback) |
155 | cmd->callback = iwl_generic_cmd_callback; | |
857485c0 TW |
156 | |
157 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
158 | return -EBUSY; | |
159 | ||
fd4abac5 | 160 | ret = iwl_enqueue_hcmd(priv, cmd); |
857485c0 | 161 | if (ret < 0) { |
15b1687c | 162 | IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n", |
857485c0 TW |
163 | get_cmd_string(cmd->id), ret); |
164 | return ret; | |
165 | } | |
166 | return 0; | |
167 | } | |
168 | ||
169 | int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
170 | { | |
171 | int cmd_idx; | |
172 | int ret; | |
857485c0 | 173 | |
3e41ace5 JB |
174 | if (WARN_ON(cmd->flags & CMD_ASYNC)) |
175 | return -EINVAL; | |
857485c0 TW |
176 | |
177 | /* A synchronous command can not have a callback set. */ | |
3e41ace5 JB |
178 | if (WARN_ON(cmd->callback)) |
179 | return -EINVAL; | |
857485c0 | 180 | |
d2dfe6df | 181 | IWL_DEBUG_INFO(priv, "Attempting to send sync command %s\n", |
15b1687c | 182 | get_cmd_string(cmd->id)); |
857485c0 | 183 | |
4b55b07f EG |
184 | if (test_and_set_bit(STATUS_HCMD_ACTIVE, &priv->status)) { |
185 | IWL_ERR(priv, "STATUS_HCMD_ACTIVE already set while sending %s" | |
186 | ". Previous SYNC cmdn is %s\n", | |
187 | get_cmd_string(cmd->id), | |
188 | get_cmd_string(priv->last_sync_cmd_id)); | |
189 | WARN_ON(1); | |
190 | } else { | |
191 | priv->last_sync_cmd_id = cmd->id; | |
192 | } | |
193 | ||
91dd6c27 | 194 | IWL_DEBUG_INFO(priv, "Setting HCMD_ACTIVE for command %s\n", |
d2dfe6df | 195 | get_cmd_string(cmd->id)); |
857485c0 | 196 | |
fd4abac5 | 197 | cmd_idx = iwl_enqueue_hcmd(priv, cmd); |
857485c0 TW |
198 | if (cmd_idx < 0) { |
199 | ret = cmd_idx; | |
dd5c940b | 200 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); |
15b1687c | 201 | IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n", |
857485c0 | 202 | get_cmd_string(cmd->id), ret); |
8447c163 | 203 | return ret; |
857485c0 TW |
204 | } |
205 | ||
206 | ret = wait_event_interruptible_timeout(priv->wait_command_queue, | |
207 | !test_bit(STATUS_HCMD_ACTIVE, &priv->status), | |
208 | HOST_COMPLETE_TIMEOUT); | |
209 | if (!ret) { | |
210 | if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) { | |
15b1687c WT |
211 | IWL_ERR(priv, |
212 | "Error sending %s: time out after %dms.\n", | |
213 | get_cmd_string(cmd->id), | |
214 | jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); | |
857485c0 TW |
215 | |
216 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
91dd6c27 | 217 | IWL_DEBUG_INFO(priv, "Clearing HCMD_ACTIVE for command %s\n", |
d2dfe6df | 218 | get_cmd_string(cmd->id)); |
857485c0 TW |
219 | ret = -ETIMEDOUT; |
220 | goto cancel; | |
221 | } | |
222 | } | |
223 | ||
224 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { | |
cf7ff8df | 225 | IWL_ERR(priv, "Command %s aborted: RF KILL Switch\n", |
857485c0 TW |
226 | get_cmd_string(cmd->id)); |
227 | ret = -ECANCELED; | |
228 | goto fail; | |
229 | } | |
230 | if (test_bit(STATUS_FW_ERROR, &priv->status)) { | |
cf7ff8df | 231 | IWL_ERR(priv, "Command %s failed: FW Error\n", |
857485c0 TW |
232 | get_cmd_string(cmd->id)); |
233 | ret = -EIO; | |
234 | goto fail; | |
235 | } | |
2f301227 | 236 | if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { |
15b1687c | 237 | IWL_ERR(priv, "Error: Response NULL in '%s'\n", |
857485c0 TW |
238 | get_cmd_string(cmd->id)); |
239 | ret = -EIO; | |
73e1a65d | 240 | goto cancel; |
857485c0 TW |
241 | } |
242 | ||
8447c163 | 243 | return 0; |
857485c0 TW |
244 | |
245 | cancel: | |
c2acea8e JB |
246 | if (cmd->flags & CMD_WANT_SKB) { |
247 | /* | |
248 | * Cancel the CMD_WANT_SKB flag for the cmd in the | |
857485c0 TW |
249 | * TX cmd queue. Otherwise in case the cmd comes |
250 | * in later, it will possibly set an invalid | |
c2acea8e JB |
251 | * address (cmd->meta.source). |
252 | */ | |
13bb9483 | 253 | priv->txq[priv->cmd_queue].meta[cmd_idx].flags &= |
c2acea8e | 254 | ~CMD_WANT_SKB; |
857485c0 TW |
255 | } |
256 | fail: | |
2f301227 | 257 | if (cmd->reply_page) { |
64a76b50 | 258 | iwl_free_pages(priv, cmd->reply_page); |
2f301227 | 259 | cmd->reply_page = 0; |
857485c0 | 260 | } |
8447c163 | 261 | |
857485c0 TW |
262 | return ret; |
263 | } | |
857485c0 TW |
264 | |
265 | int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
266 | { | |
c2acea8e | 267 | if (cmd->flags & CMD_ASYNC) |
857485c0 TW |
268 | return iwl_send_cmd_async(priv, cmd); |
269 | ||
270 | return iwl_send_cmd_sync(priv, cmd); | |
271 | } | |
857485c0 TW |
272 | |
273 | int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) | |
274 | { | |
275 | struct iwl_host_cmd cmd = { | |
276 | .id = id, | |
3fa50738 JB |
277 | .len = { len, }, |
278 | .data = { data, }, | |
857485c0 TW |
279 | }; |
280 | ||
281 | return iwl_send_cmd_sync(priv, &cmd); | |
282 | } | |
857485c0 TW |
283 | |
284 | int iwl_send_cmd_pdu_async(struct iwl_priv *priv, | |
285 | u8 id, u16 len, const void *data, | |
5696aea6 JB |
286 | void (*callback)(struct iwl_priv *priv, |
287 | struct iwl_device_cmd *cmd, | |
2f301227 | 288 | struct iwl_rx_packet *pkt)) |
857485c0 TW |
289 | { |
290 | struct iwl_host_cmd cmd = { | |
291 | .id = id, | |
3fa50738 JB |
292 | .len = { len, }, |
293 | .data = { data, }, | |
857485c0 TW |
294 | }; |
295 | ||
c2acea8e JB |
296 | cmd.flags |= CMD_ASYNC; |
297 | cmd.callback = callback; | |
857485c0 TW |
298 | |
299 | return iwl_send_cmd_async(priv, &cmd); | |
300 | } |