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857485c0 TW |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
01f8162a | 5 | * Copyright(c) 2008 - 2009 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); | |
0a0bed1d | 52 | IWL_CMD(REPLY_WEPKEY); |
d732129b | 53 | IWL_CMD(REPLY_3945_RX); |
857485c0 TW |
54 | IWL_CMD(REPLY_TX); |
55 | IWL_CMD(REPLY_RATE_SCALE); | |
56 | IWL_CMD(REPLY_LEDS_CMD); | |
57 | IWL_CMD(REPLY_TX_LINK_QUALITY_CMD); | |
7c616cba | 58 | IWL_CMD(COEX_PRIORITY_TABLE_CMD); |
fe1bcbfd WYG |
59 | IWL_CMD(COEX_MEDIUM_NOTIFICATION); |
60 | IWL_CMD(COEX_EVENT_CMD); | |
857485c0 TW |
61 | IWL_CMD(RADAR_NOTIFICATION); |
62 | IWL_CMD(REPLY_QUIET_CMD); | |
63 | IWL_CMD(REPLY_CHANNEL_SWITCH); | |
64 | IWL_CMD(CHANNEL_SWITCH_NOTIFICATION); | |
65 | IWL_CMD(REPLY_SPECTRUM_MEASUREMENT_CMD); | |
66 | IWL_CMD(SPECTRUM_MEASURE_NOTIFICATION); | |
67 | IWL_CMD(POWER_TABLE_CMD); | |
68 | IWL_CMD(PM_SLEEP_NOTIFICATION); | |
69 | IWL_CMD(PM_DEBUG_STATISTIC_NOTIFIC); | |
70 | IWL_CMD(REPLY_SCAN_CMD); | |
71 | IWL_CMD(REPLY_SCAN_ABORT_CMD); | |
72 | IWL_CMD(SCAN_START_NOTIFICATION); | |
73 | IWL_CMD(SCAN_RESULTS_NOTIFICATION); | |
74 | IWL_CMD(SCAN_COMPLETE_NOTIFICATION); | |
75 | IWL_CMD(BEACON_NOTIFICATION); | |
76 | IWL_CMD(REPLY_TX_BEACON); | |
77 | IWL_CMD(WHO_IS_AWAKE_NOTIFICATION); | |
78 | IWL_CMD(QUIET_NOTIFICATION); | |
79 | IWL_CMD(REPLY_TX_PWR_TABLE_CMD); | |
80 | IWL_CMD(MEASURE_ABORT_NOTIFICATION); | |
81 | IWL_CMD(REPLY_BT_CONFIG); | |
82 | IWL_CMD(REPLY_STATISTICS_CMD); | |
83 | IWL_CMD(STATISTICS_NOTIFICATION); | |
84 | IWL_CMD(REPLY_CARD_STATE_CMD); | |
85 | IWL_CMD(CARD_STATE_NOTIFICATION); | |
86 | IWL_CMD(MISSED_BEACONS_NOTIFICATION); | |
87 | IWL_CMD(REPLY_CT_KILL_CONFIG_CMD); | |
88 | IWL_CMD(SENSITIVITY_CMD); | |
89 | IWL_CMD(REPLY_PHY_CALIBRATION_CMD); | |
90 | IWL_CMD(REPLY_RX_PHY_CMD); | |
91 | IWL_CMD(REPLY_RX_MPDU_CMD); | |
92 | IWL_CMD(REPLY_RX); | |
93 | IWL_CMD(REPLY_COMPRESSED_BA); | |
7c616cba TW |
94 | IWL_CMD(CALIBRATION_CFG_CMD); |
95 | IWL_CMD(CALIBRATION_RES_NOTIFICATION); | |
96 | IWL_CMD(CALIBRATION_COMPLETE_NOTIFICATION); | |
ebbbdc3f | 97 | IWL_CMD(REPLY_TX_POWER_DBM_CMD); |
1a5c3d61 JS |
98 | IWL_CMD(TEMPERATURE_NOTIFICATION); |
99 | IWL_CMD(TX_ANT_CONFIGURATION_CMD); | |
857485c0 TW |
100 | default: |
101 | return "UNKNOWN"; | |
102 | ||
103 | } | |
104 | } | |
105 | EXPORT_SYMBOL(get_cmd_string); | |
106 | ||
107 | #define HOST_COMPLETE_TIMEOUT (HZ / 2) | |
108 | ||
5696aea6 JB |
109 | static void iwl_generic_cmd_callback(struct iwl_priv *priv, |
110 | struct iwl_device_cmd *cmd, | |
2f301227 | 111 | struct iwl_rx_packet *pkt) |
0472f887 | 112 | { |
0472f887 | 113 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
15b1687c | 114 | IWL_ERR(priv, "Bad return from %s (0x%08X)\n", |
0472f887 | 115 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
5696aea6 | 116 | return; |
0472f887 EG |
117 | } |
118 | ||
ded2ae7c EK |
119 | #ifdef CONFIG_IWLWIFI_DEBUG |
120 | switch (cmd->hdr.cmd) { | |
121 | case REPLY_TX_LINK_QUALITY_CMD: | |
122 | case SENSITIVITY_CMD: | |
e1623446 | 123 | IWL_DEBUG_HC_DUMP(priv, "back from %s (0x%08X)\n", |
ded2ae7c | 124 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
5696aea6 | 125 | break; |
ded2ae7c | 126 | default: |
e1623446 | 127 | IWL_DEBUG_HC(priv, "back from %s (0x%08X)\n", |
ded2ae7c EK |
128 | get_cmd_string(cmd->hdr.cmd), pkt->hdr.flags); |
129 | } | |
130 | #endif | |
0472f887 EG |
131 | } |
132 | ||
857485c0 TW |
133 | static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd) |
134 | { | |
135 | int ret; | |
136 | ||
c2acea8e | 137 | BUG_ON(!(cmd->flags & CMD_ASYNC)); |
857485c0 TW |
138 | |
139 | /* An asynchronous command can not expect an SKB to be set. */ | |
c2acea8e | 140 | BUG_ON(cmd->flags & CMD_WANT_SKB); |
857485c0 | 141 | |
0472f887 | 142 | /* Assign a generic callback if one is not provided */ |
c2acea8e JB |
143 | if (!cmd->callback) |
144 | cmd->callback = iwl_generic_cmd_callback; | |
857485c0 TW |
145 | |
146 | if (test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
147 | return -EBUSY; | |
148 | ||
fd4abac5 | 149 | ret = iwl_enqueue_hcmd(priv, cmd); |
857485c0 | 150 | if (ret < 0) { |
15b1687c | 151 | IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n", |
857485c0 TW |
152 | get_cmd_string(cmd->id), ret); |
153 | return ret; | |
154 | } | |
155 | return 0; | |
156 | } | |
157 | ||
158 | int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
159 | { | |
160 | int cmd_idx; | |
161 | int ret; | |
857485c0 | 162 | |
c2acea8e | 163 | BUG_ON(cmd->flags & CMD_ASYNC); |
857485c0 TW |
164 | |
165 | /* A synchronous command can not have a callback set. */ | |
c2acea8e | 166 | BUG_ON(cmd->callback); |
857485c0 | 167 | |
e5472978 | 168 | if (test_and_set_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)) { |
15b1687c WT |
169 | IWL_ERR(priv, |
170 | "Error sending %s: Already sending a host command\n", | |
171 | get_cmd_string(cmd->id)); | |
e5472978 TW |
172 | ret = -EBUSY; |
173 | goto out; | |
857485c0 TW |
174 | } |
175 | ||
176 | set_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
177 | ||
fd4abac5 | 178 | cmd_idx = iwl_enqueue_hcmd(priv, cmd); |
857485c0 TW |
179 | if (cmd_idx < 0) { |
180 | ret = cmd_idx; | |
15b1687c | 181 | IWL_ERR(priv, "Error sending %s: enqueue_hcmd failed: %d\n", |
857485c0 TW |
182 | get_cmd_string(cmd->id), ret); |
183 | goto out; | |
184 | } | |
185 | ||
186 | ret = wait_event_interruptible_timeout(priv->wait_command_queue, | |
187 | !test_bit(STATUS_HCMD_ACTIVE, &priv->status), | |
188 | HOST_COMPLETE_TIMEOUT); | |
189 | if (!ret) { | |
190 | if (test_bit(STATUS_HCMD_ACTIVE, &priv->status)) { | |
15b1687c WT |
191 | IWL_ERR(priv, |
192 | "Error sending %s: time out after %dms.\n", | |
193 | get_cmd_string(cmd->id), | |
194 | jiffies_to_msecs(HOST_COMPLETE_TIMEOUT)); | |
857485c0 TW |
195 | |
196 | clear_bit(STATUS_HCMD_ACTIVE, &priv->status); | |
197 | ret = -ETIMEDOUT; | |
198 | goto cancel; | |
199 | } | |
200 | } | |
201 | ||
202 | if (test_bit(STATUS_RF_KILL_HW, &priv->status)) { | |
cf7ff8df | 203 | IWL_ERR(priv, "Command %s aborted: RF KILL Switch\n", |
857485c0 TW |
204 | get_cmd_string(cmd->id)); |
205 | ret = -ECANCELED; | |
206 | goto fail; | |
207 | } | |
208 | if (test_bit(STATUS_FW_ERROR, &priv->status)) { | |
cf7ff8df | 209 | IWL_ERR(priv, "Command %s failed: FW Error\n", |
857485c0 TW |
210 | get_cmd_string(cmd->id)); |
211 | ret = -EIO; | |
212 | goto fail; | |
213 | } | |
2f301227 | 214 | if ((cmd->flags & CMD_WANT_SKB) && !cmd->reply_page) { |
15b1687c | 215 | IWL_ERR(priv, "Error: Response NULL in '%s'\n", |
857485c0 TW |
216 | get_cmd_string(cmd->id)); |
217 | ret = -EIO; | |
73e1a65d | 218 | goto cancel; |
857485c0 TW |
219 | } |
220 | ||
221 | ret = 0; | |
222 | goto out; | |
223 | ||
224 | cancel: | |
c2acea8e JB |
225 | if (cmd->flags & CMD_WANT_SKB) { |
226 | /* | |
227 | * Cancel the CMD_WANT_SKB flag for the cmd in the | |
857485c0 TW |
228 | * TX cmd queue. Otherwise in case the cmd comes |
229 | * in later, it will possibly set an invalid | |
c2acea8e JB |
230 | * address (cmd->meta.source). |
231 | */ | |
232 | priv->txq[IWL_CMD_QUEUE_NUM].meta[cmd_idx].flags &= | |
233 | ~CMD_WANT_SKB; | |
857485c0 TW |
234 | } |
235 | fail: | |
2f301227 | 236 | if (cmd->reply_page) { |
64a76b50 | 237 | iwl_free_pages(priv, cmd->reply_page); |
2f301227 | 238 | cmd->reply_page = 0; |
857485c0 TW |
239 | } |
240 | out: | |
e5472978 | 241 | clear_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status); |
857485c0 TW |
242 | return ret; |
243 | } | |
244 | EXPORT_SYMBOL(iwl_send_cmd_sync); | |
245 | ||
246 | int iwl_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) | |
247 | { | |
c2acea8e | 248 | if (cmd->flags & CMD_ASYNC) |
857485c0 TW |
249 | return iwl_send_cmd_async(priv, cmd); |
250 | ||
251 | return iwl_send_cmd_sync(priv, cmd); | |
252 | } | |
253 | EXPORT_SYMBOL(iwl_send_cmd); | |
254 | ||
255 | int iwl_send_cmd_pdu(struct iwl_priv *priv, u8 id, u16 len, const void *data) | |
256 | { | |
257 | struct iwl_host_cmd cmd = { | |
258 | .id = id, | |
259 | .len = len, | |
260 | .data = data, | |
261 | }; | |
262 | ||
263 | return iwl_send_cmd_sync(priv, &cmd); | |
264 | } | |
265 | EXPORT_SYMBOL(iwl_send_cmd_pdu); | |
266 | ||
267 | int iwl_send_cmd_pdu_async(struct iwl_priv *priv, | |
268 | u8 id, u16 len, const void *data, | |
5696aea6 JB |
269 | void (*callback)(struct iwl_priv *priv, |
270 | struct iwl_device_cmd *cmd, | |
2f301227 | 271 | struct iwl_rx_packet *pkt)) |
857485c0 TW |
272 | { |
273 | struct iwl_host_cmd cmd = { | |
274 | .id = id, | |
275 | .len = len, | |
276 | .data = data, | |
277 | }; | |
278 | ||
c2acea8e JB |
279 | cmd.flags |= CMD_ASYNC; |
280 | cmd.callback = callback; | |
857485c0 TW |
281 | |
282 | return iwl_send_cmd_async(priv, &cmd); | |
283 | } | |
284 | EXPORT_SYMBOL(iwl_send_cmd_pdu_async); |