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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / iwl-agn-lib.c
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved.
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:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29 #include <linux/etherdevice.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/sched.h>
34
35 #include "iwl-dev.h"
36 #include "iwl-core.h"
37 #include "iwl-io.h"
38 #include "iwl-agn-hw.h"
39 #include "iwl-agn.h"
40 #include "iwl-trans.h"
41 #include "iwl-shared.h"
42
43 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
44 {
45 return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
46 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
47 }
48
49 int iwlagn_send_tx_power(struct iwl_priv *priv)
50 {
51 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
52 u8 tx_ant_cfg_cmd;
53
54 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
55 "TX Power requested while scanning!\n"))
56 return -EAGAIN;
57
58 /* half dBm need to multiply */
59 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
60
61 if (priv->tx_power_lmt_in_half_dbm &&
62 priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
63 /*
64 * For the newer devices which using enhanced/extend tx power
65 * table in EEPROM, the format is in half dBm. driver need to
66 * convert to dBm format before report to mac80211.
67 * By doing so, there is a possibility of 1/2 dBm resolution
68 * lost. driver will perform "round-up" operation before
69 * reporting, but it will cause 1/2 dBm tx power over the
70 * regulatory limit. Perform the checking here, if the
71 * "tx_power_user_lmt" is higher than EEPROM value (in
72 * half-dBm format), lower the tx power based on EEPROM
73 */
74 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
75 }
76 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
77 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
78
79 if (IWL_UCODE_API(priv->fw->ucode_ver) == 1)
80 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
81 else
82 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
83
84 return iwl_dvm_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
85 sizeof(tx_power_cmd), &tx_power_cmd);
86 }
87
88 void iwlagn_temperature(struct iwl_priv *priv)
89 {
90 lockdep_assert_held(&priv->statistics.lock);
91
92 /* store temperature from correct statistics (in Celsius) */
93 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
94 iwl_tt_handler(priv);
95 }
96
97 struct iwl_mod_params iwlagn_mod_params = {
98 .amsdu_size_8K = 1,
99 .restart_fw = 1,
100 .plcp_check = true,
101 .bt_coex_active = true,
102 .power_level = IWL_POWER_INDEX_1,
103 .bt_ch_announce = true,
104 .auto_agg = true,
105 /* the rest are 0 by default */
106 };
107
108 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
109 {
110 int idx = 0;
111 int band_offset = 0;
112
113 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
114 if (rate_n_flags & RATE_MCS_HT_MSK) {
115 idx = (rate_n_flags & 0xff);
116 return idx;
117 /* Legacy rate format, search for match in table */
118 } else {
119 if (band == IEEE80211_BAND_5GHZ)
120 band_offset = IWL_FIRST_OFDM_RATE;
121 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
122 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
123 return idx - band_offset;
124 }
125
126 return -1;
127 }
128
129 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
130 struct ieee80211_vif *vif, bool add)
131 {
132 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
133
134 if (add)
135 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
136 vif->bss_conf.bssid,
137 &vif_priv->ibss_bssid_sta_id);
138 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
139 vif->bss_conf.bssid);
140 }
141
142 /**
143 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
144 *
145 * pre-requirements:
146 * 1. acquire mutex before calling
147 * 2. make sure rf is on and not in exit state
148 */
149 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
150 {
151 struct iwl_txfifo_flush_cmd flush_cmd;
152 struct iwl_host_cmd cmd = {
153 .id = REPLY_TXFIFO_FLUSH,
154 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
155 .flags = CMD_SYNC,
156 .data = { &flush_cmd, },
157 };
158
159 might_sleep();
160
161 memset(&flush_cmd, 0, sizeof(flush_cmd));
162 if (flush_control & BIT(IWL_RXON_CTX_BSS))
163 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
164 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
165 IWL_SCD_MGMT_MSK;
166 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
167 (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
168 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
169 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
170 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
171 IWL_PAN_SCD_MULTICAST_MSK;
172
173 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
174 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
175
176 IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
177 flush_cmd.fifo_control);
178 flush_cmd.flush_control = cpu_to_le16(flush_control);
179
180 return iwl_dvm_send_cmd(priv, &cmd);
181 }
182
183 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
184 {
185 mutex_lock(&priv->mutex);
186 ieee80211_stop_queues(priv->hw);
187 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
188 IWL_ERR(priv, "flush request fail\n");
189 goto done;
190 }
191 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
192 iwl_trans_wait_tx_queue_empty(trans(priv));
193 done:
194 ieee80211_wake_queues(priv->hw);
195 mutex_unlock(&priv->mutex);
196 }
197
198 /*
199 * BT coex
200 */
201 /*
202 * Macros to access the lookup table.
203 *
204 * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
205 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
206 *
207 * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
208 *
209 * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
210 * one after another in 32-bit registers, and "registers" 0 through 7 contain
211 * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
212 *
213 * These macros encode that format.
214 */
215 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
216 wifi_txrx, wifi_sh_ant_req) \
217 (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
218 (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
219
220 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
221 lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
222 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
223 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
224 (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
225 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
226 wifi_sh_ant_req))))
227 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
228 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
229 LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
230 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
231 wifi_sh_ant_req))
232 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
233 wifi_req, wifi_prio, wifi_txrx, \
234 wifi_sh_ant_req) \
235 LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
236 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
237 wifi_sh_ant_req))
238
239 #define LUT_WLAN_KILL_OP(lut, op, val) \
240 lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
241 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
242 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
243 (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
244 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
245 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
246 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
247 LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
248 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
249 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
250 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
251 LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
252 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
253
254 #define LUT_ANT_SWITCH_OP(lut, op, val) \
255 lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
256 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
257 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
258 (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
259 wifi_req, wifi_prio, wifi_txrx, \
260 wifi_sh_ant_req))))
261 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
262 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
263 LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
264 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
265 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
266 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
267 LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
268 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
269
270 static const __le32 iwlagn_def_3w_lookup[12] = {
271 cpu_to_le32(0xaaaaaaaa),
272 cpu_to_le32(0xaaaaaaaa),
273 cpu_to_le32(0xaeaaaaaa),
274 cpu_to_le32(0xaaaaaaaa),
275 cpu_to_le32(0xcc00ff28),
276 cpu_to_le32(0x0000aaaa),
277 cpu_to_le32(0xcc00aaaa),
278 cpu_to_le32(0x0000aaaa),
279 cpu_to_le32(0xc0004000),
280 cpu_to_le32(0x00004000),
281 cpu_to_le32(0xf0005000),
282 cpu_to_le32(0xf0005000),
283 };
284
285 static const __le32 iwlagn_concurrent_lookup[12] = {
286 cpu_to_le32(0xaaaaaaaa),
287 cpu_to_le32(0xaaaaaaaa),
288 cpu_to_le32(0xaaaaaaaa),
289 cpu_to_le32(0xaaaaaaaa),
290 cpu_to_le32(0xaaaaaaaa),
291 cpu_to_le32(0xaaaaaaaa),
292 cpu_to_le32(0xaaaaaaaa),
293 cpu_to_le32(0xaaaaaaaa),
294 cpu_to_le32(0x00000000),
295 cpu_to_le32(0x00000000),
296 cpu_to_le32(0x00000000),
297 cpu_to_le32(0x00000000),
298 };
299
300 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
301 {
302 struct iwl_basic_bt_cmd basic = {
303 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
304 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
305 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
306 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
307 };
308 struct iwl_bt_cmd_v1 bt_cmd_v1;
309 struct iwl_bt_cmd_v2 bt_cmd_v2;
310 int ret;
311
312 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
313 sizeof(basic.bt3_lookup_table));
314
315 if (cfg(priv)->bt_params) {
316 /*
317 * newer generation of devices (2000 series and newer)
318 * use the version 2 of the bt command
319 * we need to make sure sending the host command
320 * with correct data structure to avoid uCode assert
321 */
322 if (cfg(priv)->bt_params->bt_session_2) {
323 bt_cmd_v2.prio_boost = cpu_to_le32(
324 cfg(priv)->bt_params->bt_prio_boost);
325 bt_cmd_v2.tx_prio_boost = 0;
326 bt_cmd_v2.rx_prio_boost = 0;
327 } else {
328 bt_cmd_v1.prio_boost =
329 cfg(priv)->bt_params->bt_prio_boost;
330 bt_cmd_v1.tx_prio_boost = 0;
331 bt_cmd_v1.rx_prio_boost = 0;
332 }
333 } else {
334 IWL_ERR(priv, "failed to construct BT Coex Config\n");
335 return;
336 }
337
338 basic.kill_ack_mask = priv->kill_ack_mask;
339 basic.kill_cts_mask = priv->kill_cts_mask;
340 basic.valid = priv->bt_valid;
341
342 /*
343 * Configure BT coex mode to "no coexistence" when the
344 * user disabled BT coexistence, we have no interface
345 * (might be in monitor mode), or the interface is in
346 * IBSS mode (no proper uCode support for coex then).
347 */
348 if (!iwlagn_mod_params.bt_coex_active ||
349 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
350 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
351 } else {
352 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
353 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
354
355 if (!priv->bt_enable_pspoll)
356 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
357 else
358 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
359
360 if (priv->bt_ch_announce)
361 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
362 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
363 }
364 priv->bt_enable_flag = basic.flags;
365 if (priv->bt_full_concurrent)
366 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
367 sizeof(iwlagn_concurrent_lookup));
368 else
369 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
370 sizeof(iwlagn_def_3w_lookup));
371
372 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
373 basic.flags ? "active" : "disabled",
374 priv->bt_full_concurrent ?
375 "full concurrency" : "3-wire");
376
377 if (cfg(priv)->bt_params->bt_session_2) {
378 memcpy(&bt_cmd_v2.basic, &basic,
379 sizeof(basic));
380 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
381 CMD_SYNC, sizeof(bt_cmd_v2), &bt_cmd_v2);
382 } else {
383 memcpy(&bt_cmd_v1.basic, &basic,
384 sizeof(basic));
385 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
386 CMD_SYNC, sizeof(bt_cmd_v1), &bt_cmd_v1);
387 }
388 if (ret)
389 IWL_ERR(priv, "failed to send BT Coex Config\n");
390
391 }
392
393 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
394 {
395 struct iwl_rxon_context *ctx, *found_ctx = NULL;
396 bool found_ap = false;
397
398 lockdep_assert_held(&priv->mutex);
399
400 /* Check whether AP or GO mode is active. */
401 if (rssi_ena) {
402 for_each_context(priv, ctx) {
403 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
404 iwl_is_associated_ctx(ctx)) {
405 found_ap = true;
406 break;
407 }
408 }
409 }
410
411 /*
412 * If disable was received or If GO/AP mode, disable RSSI
413 * measurements.
414 */
415 if (!rssi_ena || found_ap) {
416 if (priv->cur_rssi_ctx) {
417 ctx = priv->cur_rssi_ctx;
418 ieee80211_disable_rssi_reports(ctx->vif);
419 priv->cur_rssi_ctx = NULL;
420 }
421 return;
422 }
423
424 /*
425 * If rssi measurements need to be enabled, consider all cases now.
426 * Figure out how many contexts are active.
427 */
428 for_each_context(priv, ctx) {
429 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
430 iwl_is_associated_ctx(ctx)) {
431 found_ctx = ctx;
432 break;
433 }
434 }
435
436 /*
437 * rssi monitor already enabled for the correct interface...nothing
438 * to do.
439 */
440 if (found_ctx == priv->cur_rssi_ctx)
441 return;
442
443 /*
444 * Figure out if rssi monitor is currently enabled, and needs
445 * to be changed. If rssi monitor is already enabled, disable
446 * it first else just enable rssi measurements on the
447 * interface found above.
448 */
449 if (priv->cur_rssi_ctx) {
450 ctx = priv->cur_rssi_ctx;
451 if (ctx->vif)
452 ieee80211_disable_rssi_reports(ctx->vif);
453 }
454
455 priv->cur_rssi_ctx = found_ctx;
456
457 if (!found_ctx)
458 return;
459
460 ieee80211_enable_rssi_reports(found_ctx->vif,
461 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
462 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
463 }
464
465 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
466 {
467 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
468 BT_UART_MSG_FRAME3SCOESCO_POS;
469 }
470
471 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
472 {
473 struct iwl_priv *priv =
474 container_of(work, struct iwl_priv, bt_traffic_change_work);
475 struct iwl_rxon_context *ctx;
476 int smps_request = -1;
477
478 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
479 /* bt coex disabled */
480 return;
481 }
482
483 /*
484 * Note: bt_traffic_load can be overridden by scan complete and
485 * coex profile notifications. Ignore that since only bad consequence
486 * can be not matching debug print with actual state.
487 */
488 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
489 priv->bt_traffic_load);
490
491 switch (priv->bt_traffic_load) {
492 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
493 if (priv->bt_status)
494 smps_request = IEEE80211_SMPS_DYNAMIC;
495 else
496 smps_request = IEEE80211_SMPS_AUTOMATIC;
497 break;
498 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
499 smps_request = IEEE80211_SMPS_DYNAMIC;
500 break;
501 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
502 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
503 smps_request = IEEE80211_SMPS_STATIC;
504 break;
505 default:
506 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
507 priv->bt_traffic_load);
508 break;
509 }
510
511 mutex_lock(&priv->mutex);
512
513 /*
514 * We can not send command to firmware while scanning. When the scan
515 * complete we will schedule this work again. We do check with mutex
516 * locked to prevent new scan request to arrive. We do not check
517 * STATUS_SCANNING to avoid race when queue_work two times from
518 * different notifications, but quit and not perform any work at all.
519 */
520 if (test_bit(STATUS_SCAN_HW, &priv->status))
521 goto out;
522
523 iwl_update_chain_flags(priv);
524
525 if (smps_request != -1) {
526 priv->current_ht_config.smps = smps_request;
527 for_each_context(priv, ctx) {
528 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
529 ieee80211_request_smps(ctx->vif, smps_request);
530 }
531 }
532
533 /*
534 * Dynamic PS poll related functionality. Adjust RSSI measurements if
535 * necessary.
536 */
537 iwlagn_bt_coex_rssi_monitor(priv);
538 out:
539 mutex_unlock(&priv->mutex);
540 }
541
542 /*
543 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
544 * correct interface or disable it if this is the last interface to be
545 * removed.
546 */
547 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
548 {
549 if (priv->bt_is_sco &&
550 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
551 iwlagn_bt_adjust_rssi_monitor(priv, true);
552 else
553 iwlagn_bt_adjust_rssi_monitor(priv, false);
554 }
555
556 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
557 struct iwl_bt_uart_msg *uart_msg)
558 {
559 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
560 "Update Req = 0x%X\n",
561 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
562 BT_UART_MSG_FRAME1MSGTYPE_POS,
563 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
564 BT_UART_MSG_FRAME1SSN_POS,
565 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
566 BT_UART_MSG_FRAME1UPDATEREQ_POS);
567
568 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
569 "Chl_SeqN = 0x%X, In band = 0x%X\n",
570 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
571 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
572 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
573 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
574 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
575 BT_UART_MSG_FRAME2CHLSEQN_POS,
576 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
577 BT_UART_MSG_FRAME2INBAND_POS);
578
579 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
580 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X\n",
581 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
582 BT_UART_MSG_FRAME3SCOESCO_POS,
583 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
584 BT_UART_MSG_FRAME3SNIFF_POS,
585 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
586 BT_UART_MSG_FRAME3A2DP_POS,
587 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
588 BT_UART_MSG_FRAME3ACL_POS,
589 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
590 BT_UART_MSG_FRAME3MASTER_POS,
591 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
592 BT_UART_MSG_FRAME3OBEX_POS);
593
594 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X\n",
595 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
596 BT_UART_MSG_FRAME4IDLEDURATION_POS);
597
598 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
599 "eSCO Retransmissions = 0x%X\n",
600 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
601 BT_UART_MSG_FRAME5TXACTIVITY_POS,
602 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
603 BT_UART_MSG_FRAME5RXACTIVITY_POS,
604 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
605 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
606
607 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X\n",
608 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
609 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
610 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
611 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
612
613 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
614 "0x%X, Inquiry = 0x%X, Connectable = 0x%X\n",
615 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
616 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
617 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
618 BT_UART_MSG_FRAME7PAGE_POS,
619 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
620 BT_UART_MSG_FRAME7INQUIRY_POS,
621 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
622 BT_UART_MSG_FRAME7CONNECTABLE_POS);
623 }
624
625 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
626 struct iwl_bt_uart_msg *uart_msg)
627 {
628 u8 kill_msk;
629 static const __le32 bt_kill_ack_msg[2] = {
630 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
631 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
632 static const __le32 bt_kill_cts_msg[2] = {
633 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
634 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
635
636 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
637 ? 1 : 0;
638 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
639 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
640 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
641 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
642 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
643 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
644
645 /* schedule to send runtime bt_config */
646 queue_work(priv->workqueue, &priv->bt_runtime_config);
647 }
648 }
649
650 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
651 struct iwl_rx_cmd_buffer *rxb,
652 struct iwl_device_cmd *cmd)
653 {
654 struct iwl_rx_packet *pkt = rxb_addr(rxb);
655 struct iwl_bt_coex_profile_notif *coex = (void *)pkt->data;
656 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
657
658 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
659 /* bt coex disabled */
660 return 0;
661 }
662
663 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
664 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
665 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
666 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
667 coex->bt_ci_compliance);
668 iwlagn_print_uartmsg(priv, uart_msg);
669
670 priv->last_bt_traffic_load = priv->bt_traffic_load;
671 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
672
673 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
674 if (priv->bt_status != coex->bt_status ||
675 priv->last_bt_traffic_load != coex->bt_traffic_load) {
676 if (coex->bt_status) {
677 /* BT on */
678 if (!priv->bt_ch_announce)
679 priv->bt_traffic_load =
680 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
681 else
682 priv->bt_traffic_load =
683 coex->bt_traffic_load;
684 } else {
685 /* BT off */
686 priv->bt_traffic_load =
687 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
688 }
689 priv->bt_status = coex->bt_status;
690 queue_work(priv->workqueue,
691 &priv->bt_traffic_change_work);
692 }
693 }
694
695 iwlagn_set_kill_msk(priv, uart_msg);
696
697 /* FIXME: based on notification, adjust the prio_boost */
698
699 priv->bt_ci_compliance = coex->bt_ci_compliance;
700 return 0;
701 }
702
703 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
704 {
705 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
706 iwlagn_bt_coex_profile_notif;
707 }
708
709 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
710 {
711 INIT_WORK(&priv->bt_traffic_change_work,
712 iwlagn_bt_traffic_change_work);
713 }
714
715 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
716 {
717 cancel_work_sync(&priv->bt_traffic_change_work);
718 }
719
720 static bool is_single_rx_stream(struct iwl_priv *priv)
721 {
722 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
723 priv->current_ht_config.single_chain_sufficient;
724 }
725
726 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
727 #define IWL_NUM_RX_CHAINS_SINGLE 2
728 #define IWL_NUM_IDLE_CHAINS_DUAL 2
729 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
730
731 /*
732 * Determine how many receiver/antenna chains to use.
733 *
734 * More provides better reception via diversity. Fewer saves power
735 * at the expense of throughput, but only when not in powersave to
736 * start with.
737 *
738 * MIMO (dual stream) requires at least 2, but works better with 3.
739 * This does not determine *which* chains to use, just how many.
740 */
741 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
742 {
743 if (cfg(priv)->bt_params &&
744 cfg(priv)->bt_params->advanced_bt_coexist &&
745 (priv->bt_full_concurrent ||
746 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
747 /*
748 * only use chain 'A' in bt high traffic load or
749 * full concurrency mode
750 */
751 return IWL_NUM_RX_CHAINS_SINGLE;
752 }
753 /* # of Rx chains to use when expecting MIMO. */
754 if (is_single_rx_stream(priv))
755 return IWL_NUM_RX_CHAINS_SINGLE;
756 else
757 return IWL_NUM_RX_CHAINS_MULTIPLE;
758 }
759
760 /*
761 * When we are in power saving mode, unless device support spatial
762 * multiplexing power save, use the active count for rx chain count.
763 */
764 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
765 {
766 /* # Rx chains when idling, depending on SMPS mode */
767 switch (priv->current_ht_config.smps) {
768 case IEEE80211_SMPS_STATIC:
769 case IEEE80211_SMPS_DYNAMIC:
770 return IWL_NUM_IDLE_CHAINS_SINGLE;
771 case IEEE80211_SMPS_AUTOMATIC:
772 case IEEE80211_SMPS_OFF:
773 return active_cnt;
774 default:
775 WARN(1, "invalid SMPS mode %d",
776 priv->current_ht_config.smps);
777 return active_cnt;
778 }
779 }
780
781 /* up to 4 chains */
782 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
783 {
784 u8 res;
785 res = (chain_bitmap & BIT(0)) >> 0;
786 res += (chain_bitmap & BIT(1)) >> 1;
787 res += (chain_bitmap & BIT(2)) >> 2;
788 res += (chain_bitmap & BIT(3)) >> 3;
789 return res;
790 }
791
792 /**
793 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
794 *
795 * Selects how many and which Rx receivers/antennas/chains to use.
796 * This should not be used for scan command ... it puts data in wrong place.
797 */
798 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
799 {
800 bool is_single = is_single_rx_stream(priv);
801 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
802 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
803 u32 active_chains;
804 u16 rx_chain;
805
806 /* Tell uCode which antennas are actually connected.
807 * Before first association, we assume all antennas are connected.
808 * Just after first association, iwl_chain_noise_calibration()
809 * checks which antennas actually *are* connected. */
810 if (priv->chain_noise_data.active_chains)
811 active_chains = priv->chain_noise_data.active_chains;
812 else
813 active_chains = priv->hw_params.valid_rx_ant;
814
815 if (cfg(priv)->bt_params &&
816 cfg(priv)->bt_params->advanced_bt_coexist &&
817 (priv->bt_full_concurrent ||
818 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
819 /*
820 * only use chain 'A' in bt high traffic load or
821 * full concurrency mode
822 */
823 active_chains = first_antenna(active_chains);
824 }
825
826 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
827
828 /* How many receivers should we use? */
829 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
830 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
831
832
833 /* correct rx chain count according hw settings
834 * and chain noise calibration
835 */
836 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
837 if (valid_rx_cnt < active_rx_cnt)
838 active_rx_cnt = valid_rx_cnt;
839
840 if (valid_rx_cnt < idle_rx_cnt)
841 idle_rx_cnt = valid_rx_cnt;
842
843 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
844 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
845
846 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
847
848 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
849 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
850 else
851 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
852
853 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
854 ctx->staging.rx_chain,
855 active_rx_cnt, idle_rx_cnt);
856
857 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
858 active_rx_cnt < idle_rx_cnt);
859 }
860
861 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
862 {
863 int i;
864 u8 ind = ant;
865
866 if (priv->band == IEEE80211_BAND_2GHZ &&
867 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
868 return 0;
869
870 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
871 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
872 if (valid & BIT(ind))
873 return ind;
874 }
875 return ant;
876 }
877
878 #ifdef CONFIG_PM_SLEEP
879 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
880 {
881 int i;
882
883 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
884 out[i] = cpu_to_le16(p1k[i]);
885 }
886
887 struct wowlan_key_data {
888 struct iwl_rxon_context *ctx;
889 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
890 struct iwlagn_wowlan_tkip_params_cmd *tkip;
891 const u8 *bssid;
892 bool error, use_rsc_tsc, use_tkip;
893 };
894
895
896 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
897 struct ieee80211_vif *vif,
898 struct ieee80211_sta *sta,
899 struct ieee80211_key_conf *key,
900 void *_data)
901 {
902 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
903 struct wowlan_key_data *data = _data;
904 struct iwl_rxon_context *ctx = data->ctx;
905 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
906 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
907 struct iwlagn_p1k_cache *rx_p1ks;
908 u8 *rx_mic_key;
909 struct ieee80211_key_seq seq;
910 u32 cur_rx_iv32 = 0;
911 u16 p1k[IWLAGN_P1K_SIZE];
912 int ret, i;
913
914 mutex_lock(&priv->mutex);
915
916 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
917 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
918 !sta && !ctx->key_mapping_keys)
919 ret = iwl_set_default_wep_key(priv, ctx, key);
920 else
921 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
922
923 if (ret) {
924 IWL_ERR(priv, "Error setting key during suspend!\n");
925 data->error = true;
926 }
927
928 switch (key->cipher) {
929 case WLAN_CIPHER_SUITE_TKIP:
930 if (sta) {
931 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
932 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
933
934 rx_p1ks = data->tkip->rx_uni;
935
936 ieee80211_get_key_tx_seq(key, &seq);
937 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
938 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
939
940 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
941 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
942
943 memcpy(data->tkip->mic_keys.tx,
944 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
945 IWLAGN_MIC_KEY_SIZE);
946
947 rx_mic_key = data->tkip->mic_keys.rx_unicast;
948 } else {
949 tkip_sc =
950 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
951 rx_p1ks = data->tkip->rx_multi;
952 rx_mic_key = data->tkip->mic_keys.rx_mcast;
953 }
954
955 /*
956 * For non-QoS this relies on the fact that both the uCode and
957 * mac80211 use TID 0 (as they need to to avoid replay attacks)
958 * for checking the IV in the frames.
959 */
960 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
961 ieee80211_get_key_rx_seq(key, i, &seq);
962 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
963 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
964 /* wrapping isn't allowed, AP must rekey */
965 if (seq.tkip.iv32 > cur_rx_iv32)
966 cur_rx_iv32 = seq.tkip.iv32;
967 }
968
969 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
970 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
971 ieee80211_get_tkip_rx_p1k(key, data->bssid,
972 cur_rx_iv32 + 1, p1k);
973 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
974
975 memcpy(rx_mic_key,
976 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
977 IWLAGN_MIC_KEY_SIZE);
978
979 data->use_tkip = true;
980 data->use_rsc_tsc = true;
981 break;
982 case WLAN_CIPHER_SUITE_CCMP:
983 if (sta) {
984 u8 *pn = seq.ccmp.pn;
985
986 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
987 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
988
989 ieee80211_get_key_tx_seq(key, &seq);
990 aes_tx_sc->pn = cpu_to_le64(
991 (u64)pn[5] |
992 ((u64)pn[4] << 8) |
993 ((u64)pn[3] << 16) |
994 ((u64)pn[2] << 24) |
995 ((u64)pn[1] << 32) |
996 ((u64)pn[0] << 40));
997 } else
998 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
999
1000 /*
1001 * For non-QoS this relies on the fact that both the uCode and
1002 * mac80211 use TID 0 for checking the IV in the frames.
1003 */
1004 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1005 u8 *pn = seq.ccmp.pn;
1006
1007 ieee80211_get_key_rx_seq(key, i, &seq);
1008 aes_sc->pn = cpu_to_le64(
1009 (u64)pn[5] |
1010 ((u64)pn[4] << 8) |
1011 ((u64)pn[3] << 16) |
1012 ((u64)pn[2] << 24) |
1013 ((u64)pn[1] << 32) |
1014 ((u64)pn[0] << 40));
1015 }
1016 data->use_rsc_tsc = true;
1017 break;
1018 }
1019
1020 mutex_unlock(&priv->mutex);
1021 }
1022
1023 int iwlagn_send_patterns(struct iwl_priv *priv,
1024 struct cfg80211_wowlan *wowlan)
1025 {
1026 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1027 struct iwl_host_cmd cmd = {
1028 .id = REPLY_WOWLAN_PATTERNS,
1029 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1030 .flags = CMD_SYNC,
1031 };
1032 int i, err;
1033
1034 if (!wowlan->n_patterns)
1035 return 0;
1036
1037 cmd.len[0] = sizeof(*pattern_cmd) +
1038 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1039
1040 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1041 if (!pattern_cmd)
1042 return -ENOMEM;
1043
1044 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1045
1046 for (i = 0; i < wowlan->n_patterns; i++) {
1047 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1048
1049 memcpy(&pattern_cmd->patterns[i].mask,
1050 wowlan->patterns[i].mask, mask_len);
1051 memcpy(&pattern_cmd->patterns[i].pattern,
1052 wowlan->patterns[i].pattern,
1053 wowlan->patterns[i].pattern_len);
1054 pattern_cmd->patterns[i].mask_size = mask_len;
1055 pattern_cmd->patterns[i].pattern_size =
1056 wowlan->patterns[i].pattern_len;
1057 }
1058
1059 cmd.data[0] = pattern_cmd;
1060 err = iwl_dvm_send_cmd(priv, &cmd);
1061 kfree(pattern_cmd);
1062 return err;
1063 }
1064
1065 int iwlagn_suspend(struct iwl_priv *priv, struct cfg80211_wowlan *wowlan)
1066 {
1067 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1068 struct iwl_rxon_cmd rxon;
1069 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1070 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1071 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1072 struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1073 struct wowlan_key_data key_data = {
1074 .ctx = ctx,
1075 .bssid = ctx->active.bssid_addr,
1076 .use_rsc_tsc = false,
1077 .tkip = &tkip_cmd,
1078 .use_tkip = false,
1079 };
1080 int ret, i;
1081 u16 seq;
1082
1083 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1084 if (!key_data.rsc_tsc)
1085 return -ENOMEM;
1086
1087 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1088
1089 /*
1090 * We know the last used seqno, and the uCode expects to know that
1091 * one, it will increment before TX.
1092 */
1093 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1094 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1095
1096 /*
1097 * For QoS counters, we store the one to use next, so subtract 0x10
1098 * since the uCode will add 0x10 before using the value.
1099 */
1100 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1101 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1102 seq -= 0x10;
1103 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1104 }
1105
1106 if (wowlan->disconnect)
1107 wakeup_filter_cmd.enabled |=
1108 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1109 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1110 if (wowlan->magic_pkt)
1111 wakeup_filter_cmd.enabled |=
1112 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1113 if (wowlan->gtk_rekey_failure)
1114 wakeup_filter_cmd.enabled |=
1115 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1116 if (wowlan->eap_identity_req)
1117 wakeup_filter_cmd.enabled |=
1118 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1119 if (wowlan->four_way_handshake)
1120 wakeup_filter_cmd.enabled |=
1121 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1122 if (wowlan->n_patterns)
1123 wakeup_filter_cmd.enabled |=
1124 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1125
1126 if (wowlan->rfkill_release)
1127 d3_cfg_cmd.wakeup_flags |=
1128 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1129
1130 iwl_scan_cancel_timeout(priv, 200);
1131
1132 memcpy(&rxon, &ctx->active, sizeof(rxon));
1133
1134 priv->ucode_loaded = false;
1135 iwl_trans_stop_device(trans(priv));
1136
1137 priv->wowlan = true;
1138
1139 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_WOWLAN);
1140 if (ret)
1141 goto out;
1142
1143 /* now configure WoWLAN ucode */
1144 ret = iwl_alive_start(priv);
1145 if (ret)
1146 goto out;
1147
1148 memcpy(&ctx->staging, &rxon, sizeof(rxon));
1149 ret = iwlagn_commit_rxon(priv, ctx);
1150 if (ret)
1151 goto out;
1152
1153 ret = iwl_power_update_mode(priv, true);
1154 if (ret)
1155 goto out;
1156
1157 if (!iwlagn_mod_params.sw_crypto) {
1158 /* mark all keys clear */
1159 priv->ucode_key_table = 0;
1160 ctx->key_mapping_keys = 0;
1161
1162 /*
1163 * This needs to be unlocked due to lock ordering
1164 * constraints. Since we're in the suspend path
1165 * that isn't really a problem though.
1166 */
1167 mutex_unlock(&priv->mutex);
1168 ieee80211_iter_keys(priv->hw, ctx->vif,
1169 iwlagn_wowlan_program_keys,
1170 &key_data);
1171 mutex_lock(&priv->mutex);
1172 if (key_data.error) {
1173 ret = -EIO;
1174 goto out;
1175 }
1176
1177 if (key_data.use_rsc_tsc) {
1178 struct iwl_host_cmd rsc_tsc_cmd = {
1179 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1180 .flags = CMD_SYNC,
1181 .data[0] = key_data.rsc_tsc,
1182 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1183 .len[0] = sizeof(*key_data.rsc_tsc),
1184 };
1185
1186 ret = iwl_dvm_send_cmd(priv, &rsc_tsc_cmd);
1187 if (ret)
1188 goto out;
1189 }
1190
1191 if (key_data.use_tkip) {
1192 ret = iwl_dvm_send_cmd_pdu(priv,
1193 REPLY_WOWLAN_TKIP_PARAMS,
1194 CMD_SYNC, sizeof(tkip_cmd),
1195 &tkip_cmd);
1196 if (ret)
1197 goto out;
1198 }
1199
1200 if (priv->have_rekey_data) {
1201 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1202 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1203 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1204 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1205 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1206 kek_kck_cmd.replay_ctr = priv->replay_ctr;
1207
1208 ret = iwl_dvm_send_cmd_pdu(priv,
1209 REPLY_WOWLAN_KEK_KCK_MATERIAL,
1210 CMD_SYNC, sizeof(kek_kck_cmd),
1211 &kek_kck_cmd);
1212 if (ret)
1213 goto out;
1214 }
1215 }
1216
1217 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_D3_CONFIG, CMD_SYNC,
1218 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1219 if (ret)
1220 goto out;
1221
1222 ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WOWLAN_WAKEUP_FILTER,
1223 CMD_SYNC, sizeof(wakeup_filter_cmd),
1224 &wakeup_filter_cmd);
1225 if (ret)
1226 goto out;
1227
1228 ret = iwlagn_send_patterns(priv, wowlan);
1229 out:
1230 kfree(key_data.rsc_tsc);
1231 return ret;
1232 }
1233 #endif
1234
1235 int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
1236 {
1237 if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
1238 IWL_WARN(priv, "Not sending command - %s KILL\n",
1239 iwl_is_rfkill(priv) ? "RF" : "CT");
1240 return -EIO;
1241 }
1242
1243 if (test_bit(STATUS_FW_ERROR, &priv->status)) {
1244 IWL_ERR(priv, "Command %s failed: FW Error\n",
1245 iwl_dvm_get_cmd_string(cmd->id));
1246 return -EIO;
1247 }
1248
1249 /*
1250 * Synchronous commands from this op-mode must hold
1251 * the mutex, this ensures we don't try to send two
1252 * (or more) synchronous commands at a time.
1253 */
1254 if (cmd->flags & CMD_SYNC)
1255 lockdep_assert_held(&priv->mutex);
1256
1257 if (priv->ucode_owner == IWL_OWNERSHIP_TM &&
1258 !(cmd->flags & CMD_ON_DEMAND)) {
1259 IWL_DEBUG_HC(priv, "tm own the uCode, no regular hcmd send\n");
1260 return -EIO;
1261 }
1262
1263 return iwl_trans_send_cmd(trans(priv), cmd);
1264 }
1265
1266 int iwl_dvm_send_cmd_pdu(struct iwl_priv *priv, u8 id,
1267 u32 flags, u16 len, const void *data)
1268 {
1269 struct iwl_host_cmd cmd = {
1270 .id = id,
1271 .len = { len, },
1272 .data = { data, },
1273 .flags = flags,
1274 };
1275
1276 return iwl_dvm_send_cmd(priv, &cmd);
1277 }
Linux kernel - Deliverables
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