1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2011 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-wifi.h"
36 #include "iwl-dev.h"
37 #include "iwl-core.h"
38 #include "iwl-io.h"
39 #include "iwl-agn-hw.h"
40 #include "iwl-agn.h"
41 #include "iwl-trans.h"
42 #include "iwl-shared.h"
43
iwlagn_hw_valid_rtc_data_addr(u32 addr)44 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
45 {
46 return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
47 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
48 }
49
iwlagn_send_tx_power(struct iwl_priv * priv)50 int iwlagn_send_tx_power(struct iwl_priv *priv)
51 {
52 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
53 u8 tx_ant_cfg_cmd;
54
55 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->shrd->status),
56 "TX Power requested while scanning!\n"))
57 return -EAGAIN;
58
59 /* half dBm need to multiply */
60 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
61
62 if (priv->tx_power_lmt_in_half_dbm &&
63 priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
64 /*
65 * For the newer devices which using enhanced/extend tx power
66 * table in EEPROM, the format is in half dBm. driver need to
67 * convert to dBm format before report to mac80211.
68 * By doing so, there is a possibility of 1/2 dBm resolution
69 * lost. driver will perform "round-up" operation before
70 * reporting, but it will cause 1/2 dBm tx power over the
71 * regulatory limit. Perform the checking here, if the
72 * "tx_power_user_lmt" is higher than EEPROM value (in
73 * half-dBm format), lower the tx power based on EEPROM
74 */
75 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
76 }
77 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
78 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
79
80 if (IWL_UCODE_API(priv->ucode_ver) == 1)
81 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
82 else
83 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
84
85 return iwl_trans_send_cmd_pdu(trans(priv), tx_ant_cfg_cmd, CMD_SYNC,
86 sizeof(tx_power_cmd), &tx_power_cmd);
87 }
88
iwlagn_temperature(struct iwl_priv * priv)89 void iwlagn_temperature(struct iwl_priv *priv)
90 {
91 /* store temperature from correct statistics (in Celsius) */
92 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
93 iwl_tt_handler(priv);
94 }
95
iwl_eeprom_calib_version(struct iwl_shared * shrd)96 u16 iwl_eeprom_calib_version(struct iwl_shared *shrd)
97 {
98 struct iwl_eeprom_calib_hdr *hdr;
99
100 hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(shrd,
101 EEPROM_CALIB_ALL);
102 return hdr->version;
103
104 }
105
106 /*
107 * EEPROM
108 */
eeprom_indirect_address(const struct iwl_shared * shrd,u32 address)109 static u32 eeprom_indirect_address(const struct iwl_shared *shrd, u32 address)
110 {
111 u16 offset = 0;
112
113 if ((address & INDIRECT_ADDRESS) == 0)
114 return address;
115
116 switch (address & INDIRECT_TYPE_MSK) {
117 case INDIRECT_HOST:
118 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_HOST);
119 break;
120 case INDIRECT_GENERAL:
121 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_GENERAL);
122 break;
123 case INDIRECT_REGULATORY:
124 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_REGULATORY);
125 break;
126 case INDIRECT_TXP_LIMIT:
127 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT);
128 break;
129 case INDIRECT_TXP_LIMIT_SIZE:
130 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_TXP_LIMIT_SIZE);
131 break;
132 case INDIRECT_CALIBRATION:
133 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_CALIBRATION);
134 break;
135 case INDIRECT_PROCESS_ADJST:
136 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_PROCESS_ADJST);
137 break;
138 case INDIRECT_OTHERS:
139 offset = iwl_eeprom_query16(shrd, EEPROM_LINK_OTHERS);
140 break;
141 default:
142 IWL_ERR(shrd->trans, "illegal indirect type: 0x%X\n",
143 address & INDIRECT_TYPE_MSK);
144 break;
145 }
146
147 /* translate the offset from words to byte */
148 return (address & ADDRESS_MSK) + (offset << 1);
149 }
150
iwl_eeprom_query_addr(const struct iwl_shared * shrd,size_t offset)151 const u8 *iwl_eeprom_query_addr(const struct iwl_shared *shrd, size_t offset)
152 {
153 u32 address = eeprom_indirect_address(shrd, offset);
154 BUG_ON(address >= shrd->cfg->base_params->eeprom_size);
155 return &shrd->eeprom[address];
156 }
157
158 struct iwl_mod_params iwlagn_mod_params = {
159 .amsdu_size_8K = 1,
160 .restart_fw = 1,
161 .plcp_check = true,
162 .bt_coex_active = true,
163 .no_sleep_autoadjust = true,
164 .power_level = IWL_POWER_INDEX_1,
165 .bt_ch_announce = true,
166 .wanted_ucode_alternative = 1,
167 .auto_agg = true,
168 /* the rest are 0 by default */
169 };
170
iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags,enum ieee80211_band band)171 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
172 {
173 int idx = 0;
174 int band_offset = 0;
175
176 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
177 if (rate_n_flags & RATE_MCS_HT_MSK) {
178 idx = (rate_n_flags & 0xff);
179 return idx;
180 /* Legacy rate format, search for match in table */
181 } else {
182 if (band == IEEE80211_BAND_5GHZ)
183 band_offset = IWL_FIRST_OFDM_RATE;
184 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
185 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
186 return idx - band_offset;
187 }
188
189 return -1;
190 }
191
iwlagn_manage_ibss_station(struct iwl_priv * priv,struct ieee80211_vif * vif,bool add)192 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
193 struct ieee80211_vif *vif, bool add)
194 {
195 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
196
197 if (add)
198 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
199 vif->bss_conf.bssid,
200 &vif_priv->ibss_bssid_sta_id);
201 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
202 vif->bss_conf.bssid);
203 }
204
205 /**
206 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
207 *
208 * pre-requirements:
209 * 1. acquire mutex before calling
210 * 2. make sure rf is on and not in exit state
211 */
iwlagn_txfifo_flush(struct iwl_priv * priv,u16 flush_control)212 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
213 {
214 struct iwl_txfifo_flush_cmd flush_cmd;
215 struct iwl_host_cmd cmd = {
216 .id = REPLY_TXFIFO_FLUSH,
217 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
218 .flags = CMD_SYNC,
219 .data = { &flush_cmd, },
220 };
221
222 might_sleep();
223
224 memset(&flush_cmd, 0, sizeof(flush_cmd));
225 if (flush_control & BIT(IWL_RXON_CTX_BSS))
226 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
227 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
228 IWL_SCD_MGMT_MSK;
229 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
230 (priv->shrd->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
231 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
232 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
233 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
234 IWL_PAN_SCD_MULTICAST_MSK;
235
236 if (cfg(priv)->sku & EEPROM_SKU_CAP_11N_ENABLE)
237 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
238
239 IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
240 flush_cmd.fifo_control);
241 flush_cmd.flush_control = cpu_to_le16(flush_control);
242
243 return iwl_trans_send_cmd(trans(priv), &cmd);
244 }
245
iwlagn_dev_txfifo_flush(struct iwl_priv * priv,u16 flush_control)246 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
247 {
248 mutex_lock(&priv->shrd->mutex);
249 ieee80211_stop_queues(priv->hw);
250 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
251 IWL_ERR(priv, "flush request fail\n");
252 goto done;
253 }
254 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
255 iwl_trans_wait_tx_queue_empty(trans(priv));
256 done:
257 ieee80211_wake_queues(priv->hw);
258 mutex_unlock(&priv->shrd->mutex);
259 }
260
261 /*
262 * BT coex
263 */
264 /*
265 * Macros to access the lookup table.
266 *
267 * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
268 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
269 *
270 * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
271 *
272 * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
273 * one after another in 32-bit registers, and "registers" 0 through 7 contain
274 * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
275 *
276 * These macros encode that format.
277 */
278 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
279 wifi_txrx, wifi_sh_ant_req) \
280 (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
281 (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
282
283 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
284 lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
285 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
286 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
287 (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
288 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
289 wifi_sh_ant_req))))
290 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
291 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
292 LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
293 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
294 wifi_sh_ant_req))
295 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
296 wifi_req, wifi_prio, wifi_txrx, \
297 wifi_sh_ant_req) \
298 LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
299 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
300 wifi_sh_ant_req))
301
302 #define LUT_WLAN_KILL_OP(lut, op, val) \
303 lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
304 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
305 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
306 (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
307 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
308 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
309 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
310 LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
311 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
312 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
313 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
314 LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
315 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
316
317 #define LUT_ANT_SWITCH_OP(lut, op, val) \
318 lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
319 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
320 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
321 (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
322 wifi_req, wifi_prio, wifi_txrx, \
323 wifi_sh_ant_req))))
324 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
325 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
326 LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
327 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
328 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
329 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
330 LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
331 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
332
333 static const __le32 iwlagn_def_3w_lookup[12] = {
334 cpu_to_le32(0xaaaaaaaa),
335 cpu_to_le32(0xaaaaaaaa),
336 cpu_to_le32(0xaeaaaaaa),
337 cpu_to_le32(0xaaaaaaaa),
338 cpu_to_le32(0xcc00ff28),
339 cpu_to_le32(0x0000aaaa),
340 cpu_to_le32(0xcc00aaaa),
341 cpu_to_le32(0x0000aaaa),
342 cpu_to_le32(0xc0004000),
343 cpu_to_le32(0x00004000),
344 cpu_to_le32(0xf0005000),
345 cpu_to_le32(0xf0005000),
346 };
347
348 static const __le32 iwlagn_concurrent_lookup[12] = {
349 cpu_to_le32(0xaaaaaaaa),
350 cpu_to_le32(0xaaaaaaaa),
351 cpu_to_le32(0xaaaaaaaa),
352 cpu_to_le32(0xaaaaaaaa),
353 cpu_to_le32(0xaaaaaaaa),
354 cpu_to_le32(0xaaaaaaaa),
355 cpu_to_le32(0xaaaaaaaa),
356 cpu_to_le32(0xaaaaaaaa),
357 cpu_to_le32(0x00000000),
358 cpu_to_le32(0x00000000),
359 cpu_to_le32(0x00000000),
360 cpu_to_le32(0x00000000),
361 };
362
iwlagn_send_advance_bt_config(struct iwl_priv * priv)363 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
364 {
365 struct iwl_basic_bt_cmd basic = {
366 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
367 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
368 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
369 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
370 };
371 struct iwl6000_bt_cmd bt_cmd_6000;
372 struct iwl2000_bt_cmd bt_cmd_2000;
373 int ret;
374
375 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
376 sizeof(basic.bt3_lookup_table));
377
378 if (cfg(priv)->bt_params) {
379 if (cfg(priv)->bt_params->bt_session_2) {
380 bt_cmd_2000.prio_boost = cpu_to_le32(
381 cfg(priv)->bt_params->bt_prio_boost);
382 bt_cmd_2000.tx_prio_boost = 0;
383 bt_cmd_2000.rx_prio_boost = 0;
384 } else {
385 bt_cmd_6000.prio_boost =
386 cfg(priv)->bt_params->bt_prio_boost;
387 bt_cmd_6000.tx_prio_boost = 0;
388 bt_cmd_6000.rx_prio_boost = 0;
389 }
390 } else {
391 IWL_ERR(priv, "failed to construct BT Coex Config\n");
392 return;
393 }
394
395 basic.kill_ack_mask = priv->kill_ack_mask;
396 basic.kill_cts_mask = priv->kill_cts_mask;
397 basic.valid = priv->bt_valid;
398
399 /*
400 * Configure BT coex mode to "no coexistence" when the
401 * user disabled BT coexistence, we have no interface
402 * (might be in monitor mode), or the interface is in
403 * IBSS mode (no proper uCode support for coex then).
404 */
405 if (!iwlagn_mod_params.bt_coex_active ||
406 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
407 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
408 } else {
409 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
410 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
411
412 if (!priv->bt_enable_pspoll)
413 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
414 else
415 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
416
417 if (priv->bt_ch_announce)
418 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
419 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
420 }
421 priv->bt_enable_flag = basic.flags;
422 if (priv->bt_full_concurrent)
423 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
424 sizeof(iwlagn_concurrent_lookup));
425 else
426 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
427 sizeof(iwlagn_def_3w_lookup));
428
429 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
430 basic.flags ? "active" : "disabled",
431 priv->bt_full_concurrent ?
432 "full concurrency" : "3-wire");
433
434 if (cfg(priv)->bt_params->bt_session_2) {
435 memcpy(&bt_cmd_2000.basic, &basic,
436 sizeof(basic));
437 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
438 CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
439 } else {
440 memcpy(&bt_cmd_6000.basic, &basic,
441 sizeof(basic));
442 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_BT_CONFIG,
443 CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
444 }
445 if (ret)
446 IWL_ERR(priv, "failed to send BT Coex Config\n");
447
448 }
449
iwlagn_bt_adjust_rssi_monitor(struct iwl_priv * priv,bool rssi_ena)450 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
451 {
452 struct iwl_rxon_context *ctx, *found_ctx = NULL;
453 bool found_ap = false;
454
455 lockdep_assert_held(&priv->shrd->mutex);
456
457 /* Check whether AP or GO mode is active. */
458 if (rssi_ena) {
459 for_each_context(priv, ctx) {
460 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
461 iwl_is_associated_ctx(ctx)) {
462 found_ap = true;
463 break;
464 }
465 }
466 }
467
468 /*
469 * If disable was received or If GO/AP mode, disable RSSI
470 * measurements.
471 */
472 if (!rssi_ena || found_ap) {
473 if (priv->cur_rssi_ctx) {
474 ctx = priv->cur_rssi_ctx;
475 ieee80211_disable_rssi_reports(ctx->vif);
476 priv->cur_rssi_ctx = NULL;
477 }
478 return;
479 }
480
481 /*
482 * If rssi measurements need to be enabled, consider all cases now.
483 * Figure out how many contexts are active.
484 */
485 for_each_context(priv, ctx) {
486 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
487 iwl_is_associated_ctx(ctx)) {
488 found_ctx = ctx;
489 break;
490 }
491 }
492
493 /*
494 * rssi monitor already enabled for the correct interface...nothing
495 * to do.
496 */
497 if (found_ctx == priv->cur_rssi_ctx)
498 return;
499
500 /*
501 * Figure out if rssi monitor is currently enabled, and needs
502 * to be changed. If rssi monitor is already enabled, disable
503 * it first else just enable rssi measurements on the
504 * interface found above.
505 */
506 if (priv->cur_rssi_ctx) {
507 ctx = priv->cur_rssi_ctx;
508 if (ctx->vif)
509 ieee80211_disable_rssi_reports(ctx->vif);
510 }
511
512 priv->cur_rssi_ctx = found_ctx;
513
514 if (!found_ctx)
515 return;
516
517 ieee80211_enable_rssi_reports(found_ctx->vif,
518 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
519 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
520 }
521
iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg * uart_msg)522 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
523 {
524 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
525 BT_UART_MSG_FRAME3SCOESCO_POS;
526 }
527
iwlagn_bt_traffic_change_work(struct work_struct * work)528 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
529 {
530 struct iwl_priv *priv =
531 container_of(work, struct iwl_priv, bt_traffic_change_work);
532 struct iwl_rxon_context *ctx;
533 int smps_request = -1;
534
535 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
536 /* bt coex disabled */
537 return;
538 }
539
540 /*
541 * Note: bt_traffic_load can be overridden by scan complete and
542 * coex profile notifications. Ignore that since only bad consequence
543 * can be not matching debug print with actual state.
544 */
545 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
546 priv->bt_traffic_load);
547
548 switch (priv->bt_traffic_load) {
549 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
550 if (priv->bt_status)
551 smps_request = IEEE80211_SMPS_DYNAMIC;
552 else
553 smps_request = IEEE80211_SMPS_AUTOMATIC;
554 break;
555 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
556 smps_request = IEEE80211_SMPS_DYNAMIC;
557 break;
558 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
559 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
560 smps_request = IEEE80211_SMPS_STATIC;
561 break;
562 default:
563 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
564 priv->bt_traffic_load);
565 break;
566 }
567
568 mutex_lock(&priv->shrd->mutex);
569
570 /*
571 * We can not send command to firmware while scanning. When the scan
572 * complete we will schedule this work again. We do check with mutex
573 * locked to prevent new scan request to arrive. We do not check
574 * STATUS_SCANNING to avoid race when queue_work two times from
575 * different notifications, but quit and not perform any work at all.
576 */
577 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status))
578 goto out;
579
580 iwl_update_chain_flags(priv);
581
582 if (smps_request != -1) {
583 priv->current_ht_config.smps = smps_request;
584 for_each_context(priv, ctx) {
585 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
586 ieee80211_request_smps(ctx->vif, smps_request);
587 }
588 }
589
590 /*
591 * Dynamic PS poll related functionality. Adjust RSSI measurements if
592 * necessary.
593 */
594 iwlagn_bt_coex_rssi_monitor(priv);
595 out:
596 mutex_unlock(&priv->shrd->mutex);
597 }
598
599 /*
600 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
601 * correct interface or disable it if this is the last interface to be
602 * removed.
603 */
iwlagn_bt_coex_rssi_monitor(struct iwl_priv * priv)604 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
605 {
606 if (priv->bt_is_sco &&
607 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
608 iwlagn_bt_adjust_rssi_monitor(priv, true);
609 else
610 iwlagn_bt_adjust_rssi_monitor(priv, false);
611 }
612
iwlagn_print_uartmsg(struct iwl_priv * priv,struct iwl_bt_uart_msg * uart_msg)613 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
614 struct iwl_bt_uart_msg *uart_msg)
615 {
616 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
617 "Update Req = 0x%X",
618 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
619 BT_UART_MSG_FRAME1MSGTYPE_POS,
620 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
621 BT_UART_MSG_FRAME1SSN_POS,
622 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
623 BT_UART_MSG_FRAME1UPDATEREQ_POS);
624
625 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
626 "Chl_SeqN = 0x%X, In band = 0x%X",
627 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
628 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
629 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
630 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
631 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
632 BT_UART_MSG_FRAME2CHLSEQN_POS,
633 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
634 BT_UART_MSG_FRAME2INBAND_POS);
635
636 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
637 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X",
638 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
639 BT_UART_MSG_FRAME3SCOESCO_POS,
640 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
641 BT_UART_MSG_FRAME3SNIFF_POS,
642 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
643 BT_UART_MSG_FRAME3A2DP_POS,
644 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
645 BT_UART_MSG_FRAME3ACL_POS,
646 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
647 BT_UART_MSG_FRAME3MASTER_POS,
648 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
649 BT_UART_MSG_FRAME3OBEX_POS);
650
651 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X",
652 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
653 BT_UART_MSG_FRAME4IDLEDURATION_POS);
654
655 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
656 "eSCO Retransmissions = 0x%X",
657 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
658 BT_UART_MSG_FRAME5TXACTIVITY_POS,
659 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
660 BT_UART_MSG_FRAME5RXACTIVITY_POS,
661 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
662 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
663
664 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X",
665 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
666 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
667 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
668 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
669
670 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
671 "0x%X, Inquiry = 0x%X, Connectable = 0x%X",
672 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
673 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
674 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
675 BT_UART_MSG_FRAME7PAGE_POS,
676 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
677 BT_UART_MSG_FRAME7INQUIRY_POS,
678 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
679 BT_UART_MSG_FRAME7CONNECTABLE_POS);
680 }
681
iwlagn_set_kill_msk(struct iwl_priv * priv,struct iwl_bt_uart_msg * uart_msg)682 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
683 struct iwl_bt_uart_msg *uart_msg)
684 {
685 u8 kill_msk;
686 static const __le32 bt_kill_ack_msg[2] = {
687 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
688 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
689 static const __le32 bt_kill_cts_msg[2] = {
690 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
691 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
692
693 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
694 ? 1 : 0;
695 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
696 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
697 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
698 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
699 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
700 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
701
702 /* schedule to send runtime bt_config */
703 queue_work(priv->shrd->workqueue, &priv->bt_runtime_config);
704 }
705 }
706
iwlagn_bt_coex_profile_notif(struct iwl_priv * priv,struct iwl_rx_mem_buffer * rxb,struct iwl_device_cmd * cmd)707 int iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
708 struct iwl_rx_mem_buffer *rxb,
709 struct iwl_device_cmd *cmd)
710 {
711 unsigned long flags;
712 struct iwl_rx_packet *pkt = rxb_addr(rxb);
713 struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif;
714 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
715
716 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
717 /* bt coex disabled */
718 return 0;
719 }
720
721 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
722 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
723 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
724 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
725 coex->bt_ci_compliance);
726 iwlagn_print_uartmsg(priv, uart_msg);
727
728 priv->last_bt_traffic_load = priv->bt_traffic_load;
729 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
730
731 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
732 if (priv->bt_status != coex->bt_status ||
733 priv->last_bt_traffic_load != coex->bt_traffic_load) {
734 if (coex->bt_status) {
735 /* BT on */
736 if (!priv->bt_ch_announce)
737 priv->bt_traffic_load =
738 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
739 else
740 priv->bt_traffic_load =
741 coex->bt_traffic_load;
742 } else {
743 /* BT off */
744 priv->bt_traffic_load =
745 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
746 }
747 priv->bt_status = coex->bt_status;
748 queue_work(priv->shrd->workqueue,
749 &priv->bt_traffic_change_work);
750 }
751 }
752
753 iwlagn_set_kill_msk(priv, uart_msg);
754
755 /* FIXME: based on notification, adjust the prio_boost */
756
757 spin_lock_irqsave(&priv->shrd->lock, flags);
758 priv->bt_ci_compliance = coex->bt_ci_compliance;
759 spin_unlock_irqrestore(&priv->shrd->lock, flags);
760 return 0;
761 }
762
iwlagn_bt_rx_handler_setup(struct iwl_priv * priv)763 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
764 {
765 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
766 iwlagn_bt_coex_profile_notif;
767 }
768
iwlagn_bt_setup_deferred_work(struct iwl_priv * priv)769 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
770 {
771 INIT_WORK(&priv->bt_traffic_change_work,
772 iwlagn_bt_traffic_change_work);
773 }
774
iwlagn_bt_cancel_deferred_work(struct iwl_priv * priv)775 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
776 {
777 cancel_work_sync(&priv->bt_traffic_change_work);
778 }
779
is_single_rx_stream(struct iwl_priv * priv)780 static bool is_single_rx_stream(struct iwl_priv *priv)
781 {
782 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
783 priv->current_ht_config.single_chain_sufficient;
784 }
785
786 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
787 #define IWL_NUM_RX_CHAINS_SINGLE 2
788 #define IWL_NUM_IDLE_CHAINS_DUAL 2
789 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
790
791 /*
792 * Determine how many receiver/antenna chains to use.
793 *
794 * More provides better reception via diversity. Fewer saves power
795 * at the expense of throughput, but only when not in powersave to
796 * start with.
797 *
798 * MIMO (dual stream) requires at least 2, but works better with 3.
799 * This does not determine *which* chains to use, just how many.
800 */
iwl_get_active_rx_chain_count(struct iwl_priv * priv)801 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
802 {
803 if (cfg(priv)->bt_params &&
804 cfg(priv)->bt_params->advanced_bt_coexist &&
805 (priv->bt_full_concurrent ||
806 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
807 /*
808 * only use chain 'A' in bt high traffic load or
809 * full concurrency mode
810 */
811 return IWL_NUM_RX_CHAINS_SINGLE;
812 }
813 /* # of Rx chains to use when expecting MIMO. */
814 if (is_single_rx_stream(priv))
815 return IWL_NUM_RX_CHAINS_SINGLE;
816 else
817 return IWL_NUM_RX_CHAINS_MULTIPLE;
818 }
819
820 /*
821 * When we are in power saving mode, unless device support spatial
822 * multiplexing power save, use the active count for rx chain count.
823 */
iwl_get_idle_rx_chain_count(struct iwl_priv * priv,int active_cnt)824 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
825 {
826 /* # Rx chains when idling, depending on SMPS mode */
827 switch (priv->current_ht_config.smps) {
828 case IEEE80211_SMPS_STATIC:
829 case IEEE80211_SMPS_DYNAMIC:
830 return IWL_NUM_IDLE_CHAINS_SINGLE;
831 case IEEE80211_SMPS_AUTOMATIC:
832 case IEEE80211_SMPS_OFF:
833 return active_cnt;
834 default:
835 WARN(1, "invalid SMPS mode %d",
836 priv->current_ht_config.smps);
837 return active_cnt;
838 }
839 }
840
841 /* up to 4 chains */
iwl_count_chain_bitmap(u32 chain_bitmap)842 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
843 {
844 u8 res;
845 res = (chain_bitmap & BIT(0)) >> 0;
846 res += (chain_bitmap & BIT(1)) >> 1;
847 res += (chain_bitmap & BIT(2)) >> 2;
848 res += (chain_bitmap & BIT(3)) >> 3;
849 return res;
850 }
851
852 /**
853 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
854 *
855 * Selects how many and which Rx receivers/antennas/chains to use.
856 * This should not be used for scan command ... it puts data in wrong place.
857 */
iwlagn_set_rxon_chain(struct iwl_priv * priv,struct iwl_rxon_context * ctx)858 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
859 {
860 bool is_single = is_single_rx_stream(priv);
861 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->shrd->status);
862 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
863 u32 active_chains;
864 u16 rx_chain;
865
866 /* Tell uCode which antennas are actually connected.
867 * Before first association, we assume all antennas are connected.
868 * Just after first association, iwl_chain_noise_calibration()
869 * checks which antennas actually *are* connected. */
870 if (priv->chain_noise_data.active_chains)
871 active_chains = priv->chain_noise_data.active_chains;
872 else
873 active_chains = hw_params(priv).valid_rx_ant;
874
875 if (cfg(priv)->bt_params &&
876 cfg(priv)->bt_params->advanced_bt_coexist &&
877 (priv->bt_full_concurrent ||
878 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
879 /*
880 * only use chain 'A' in bt high traffic load or
881 * full concurrency mode
882 */
883 active_chains = first_antenna(active_chains);
884 }
885
886 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
887
888 /* How many receivers should we use? */
889 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
890 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
891
892
893 /* correct rx chain count according hw settings
894 * and chain noise calibration
895 */
896 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
897 if (valid_rx_cnt < active_rx_cnt)
898 active_rx_cnt = valid_rx_cnt;
899
900 if (valid_rx_cnt < idle_rx_cnt)
901 idle_rx_cnt = valid_rx_cnt;
902
903 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
904 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
905
906 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
907
908 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
909 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
910 else
911 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
912
913 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
914 ctx->staging.rx_chain,
915 active_rx_cnt, idle_rx_cnt);
916
917 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
918 active_rx_cnt < idle_rx_cnt);
919 }
920
iwl_toggle_tx_ant(struct iwl_priv * priv,u8 ant,u8 valid)921 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
922 {
923 int i;
924 u8 ind = ant;
925
926 if (priv->band == IEEE80211_BAND_2GHZ &&
927 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
928 return 0;
929
930 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
931 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
932 if (valid & BIT(ind))
933 return ind;
934 }
935 return ant;
936 }
937
938 #ifdef CONFIG_PM_SLEEP
iwlagn_convert_p1k(u16 * p1k,__le16 * out)939 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
940 {
941 int i;
942
943 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
944 out[i] = cpu_to_le16(p1k[i]);
945 }
946
947 struct wowlan_key_data {
948 struct iwl_rxon_context *ctx;
949 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
950 struct iwlagn_wowlan_tkip_params_cmd *tkip;
951 const u8 *bssid;
952 bool error, use_rsc_tsc, use_tkip;
953 };
954
955
iwlagn_wowlan_program_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key,void * _data)956 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
957 struct ieee80211_vif *vif,
958 struct ieee80211_sta *sta,
959 struct ieee80211_key_conf *key,
960 void *_data)
961 {
962 struct iwl_priv *priv = hw->priv;
963 struct wowlan_key_data *data = _data;
964 struct iwl_rxon_context *ctx = data->ctx;
965 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
966 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
967 struct iwlagn_p1k_cache *rx_p1ks;
968 u8 *rx_mic_key;
969 struct ieee80211_key_seq seq;
970 u32 cur_rx_iv32 = 0;
971 u16 p1k[IWLAGN_P1K_SIZE];
972 int ret, i;
973
974 mutex_lock(&priv->shrd->mutex);
975
976 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
977 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
978 !sta && !ctx->key_mapping_keys)
979 ret = iwl_set_default_wep_key(priv, ctx, key);
980 else
981 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
982
983 if (ret) {
984 IWL_ERR(priv, "Error setting key during suspend!\n");
985 data->error = true;
986 }
987
988 switch (key->cipher) {
989 case WLAN_CIPHER_SUITE_TKIP:
990 if (sta) {
991 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
992 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
993
994 rx_p1ks = data->tkip->rx_uni;
995
996 ieee80211_get_key_tx_seq(key, &seq);
997 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
998 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
999
1000 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1001 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1002
1003 memcpy(data->tkip->mic_keys.tx,
1004 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1005 IWLAGN_MIC_KEY_SIZE);
1006
1007 rx_mic_key = data->tkip->mic_keys.rx_unicast;
1008 } else {
1009 tkip_sc =
1010 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1011 rx_p1ks = data->tkip->rx_multi;
1012 rx_mic_key = data->tkip->mic_keys.rx_mcast;
1013 }
1014
1015 /*
1016 * For non-QoS this relies on the fact that both the uCode and
1017 * mac80211 use TID 0 (as they need to to avoid replay attacks)
1018 * for checking the IV in the frames.
1019 */
1020 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1021 ieee80211_get_key_rx_seq(key, i, &seq);
1022 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1023 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1024 /* wrapping isn't allowed, AP must rekey */
1025 if (seq.tkip.iv32 > cur_rx_iv32)
1026 cur_rx_iv32 = seq.tkip.iv32;
1027 }
1028
1029 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1030 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1031 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1032 cur_rx_iv32 + 1, p1k);
1033 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1034
1035 memcpy(rx_mic_key,
1036 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1037 IWLAGN_MIC_KEY_SIZE);
1038
1039 data->use_tkip = true;
1040 data->use_rsc_tsc = true;
1041 break;
1042 case WLAN_CIPHER_SUITE_CCMP:
1043 if (sta) {
1044 u8 *pn = seq.ccmp.pn;
1045
1046 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1047 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1048
1049 ieee80211_get_key_tx_seq(key, &seq);
1050 aes_tx_sc->pn = cpu_to_le64(
1051 (u64)pn[5] |
1052 ((u64)pn[4] << 8) |
1053 ((u64)pn[3] << 16) |
1054 ((u64)pn[2] << 24) |
1055 ((u64)pn[1] << 32) |
1056 ((u64)pn[0] << 40));
1057 } else
1058 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1059
1060 /*
1061 * For non-QoS this relies on the fact that both the uCode and
1062 * mac80211 use TID 0 for checking the IV in the frames.
1063 */
1064 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1065 u8 *pn = seq.ccmp.pn;
1066
1067 ieee80211_get_key_rx_seq(key, i, &seq);
1068 aes_sc->pn = cpu_to_le64(
1069 (u64)pn[5] |
1070 ((u64)pn[4] << 8) |
1071 ((u64)pn[3] << 16) |
1072 ((u64)pn[2] << 24) |
1073 ((u64)pn[1] << 32) |
1074 ((u64)pn[0] << 40));
1075 }
1076 data->use_rsc_tsc = true;
1077 break;
1078 }
1079
1080 mutex_unlock(&priv->shrd->mutex);
1081 }
1082
iwlagn_send_patterns(struct iwl_priv * priv,struct cfg80211_wowlan * wowlan)1083 int iwlagn_send_patterns(struct iwl_priv *priv,
1084 struct cfg80211_wowlan *wowlan)
1085 {
1086 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1087 struct iwl_host_cmd cmd = {
1088 .id = REPLY_WOWLAN_PATTERNS,
1089 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1090 .flags = CMD_SYNC,
1091 };
1092 int i, err;
1093
1094 if (!wowlan->n_patterns)
1095 return 0;
1096
1097 cmd.len[0] = sizeof(*pattern_cmd) +
1098 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1099
1100 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1101 if (!pattern_cmd)
1102 return -ENOMEM;
1103
1104 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1105
1106 for (i = 0; i < wowlan->n_patterns; i++) {
1107 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1108
1109 memcpy(&pattern_cmd->patterns[i].mask,
1110 wowlan->patterns[i].mask, mask_len);
1111 memcpy(&pattern_cmd->patterns[i].pattern,
1112 wowlan->patterns[i].pattern,
1113 wowlan->patterns[i].pattern_len);
1114 pattern_cmd->patterns[i].mask_size = mask_len;
1115 pattern_cmd->patterns[i].pattern_size =
1116 wowlan->patterns[i].pattern_len;
1117 }
1118
1119 cmd.data[0] = pattern_cmd;
1120 err = iwl_trans_send_cmd(trans(priv), &cmd);
1121 kfree(pattern_cmd);
1122 return err;
1123 }
1124
iwlagn_suspend(struct iwl_priv * priv,struct ieee80211_hw * hw,struct cfg80211_wowlan * wowlan)1125 int iwlagn_suspend(struct iwl_priv *priv,
1126 struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1127 {
1128 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
1129 struct iwl_rxon_cmd rxon;
1130 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1131 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
1132 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
1133 struct iwlagn_d3_config_cmd d3_cfg_cmd = {};
1134 struct wowlan_key_data key_data = {
1135 .ctx = ctx,
1136 .bssid = ctx->active.bssid_addr,
1137 .use_rsc_tsc = false,
1138 .tkip = &tkip_cmd,
1139 .use_tkip = false,
1140 };
1141 int ret, i;
1142 u16 seq;
1143
1144 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
1145 if (!key_data.rsc_tsc)
1146 return -ENOMEM;
1147
1148 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
1149
1150 /*
1151 * We know the last used seqno, and the uCode expects to know that
1152 * one, it will increment before TX.
1153 */
1154 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
1155 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
1156
1157 /*
1158 * For QoS counters, we store the one to use next, so subtract 0x10
1159 * since the uCode will add 0x10 before using the value.
1160 */
1161 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1162 seq = priv->tid_data[IWL_AP_ID][i].seq_number;
1163 seq -= 0x10;
1164 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
1165 }
1166
1167 if (wowlan->disconnect)
1168 wakeup_filter_cmd.enabled |=
1169 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
1170 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
1171 if (wowlan->magic_pkt)
1172 wakeup_filter_cmd.enabled |=
1173 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
1174 if (wowlan->gtk_rekey_failure)
1175 wakeup_filter_cmd.enabled |=
1176 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
1177 if (wowlan->eap_identity_req)
1178 wakeup_filter_cmd.enabled |=
1179 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1180 if (wowlan->four_way_handshake)
1181 wakeup_filter_cmd.enabled |=
1182 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1183 if (wowlan->n_patterns)
1184 wakeup_filter_cmd.enabled |=
1185 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
1186
1187 if (wowlan->rfkill_release)
1188 d3_cfg_cmd.wakeup_flags |=
1189 cpu_to_le32(IWLAGN_D3_WAKEUP_RFKILL);
1190
1191 iwl_scan_cancel_timeout(priv, 200);
1192
1193 memcpy(&rxon, &ctx->active, sizeof(rxon));
1194
1195 iwl_trans_stop_device(trans(priv));
1196
1197 priv->shrd->wowlan = true;
1198
1199 ret = iwl_load_ucode_wait_alive(trans(priv), IWL_UCODE_WOWLAN);
1200 if (ret)
1201 goto out;
1202
1203 /* now configure WoWLAN ucode */
1204 ret = iwl_alive_start(priv);
1205 if (ret)
1206 goto out;
1207
1208 memcpy(&ctx->staging, &rxon, sizeof(rxon));
1209 ret = iwlagn_commit_rxon(priv, ctx);
1210 if (ret)
1211 goto out;
1212
1213 ret = iwl_power_update_mode(priv, true);
1214 if (ret)
1215 goto out;
1216
1217 if (!iwlagn_mod_params.sw_crypto) {
1218 /* mark all keys clear */
1219 priv->ucode_key_table = 0;
1220 ctx->key_mapping_keys = 0;
1221
1222 /*
1223 * This needs to be unlocked due to lock ordering
1224 * constraints. Since we're in the suspend path
1225 * that isn't really a problem though.
1226 */
1227 mutex_unlock(&priv->shrd->mutex);
1228 ieee80211_iter_keys(priv->hw, ctx->vif,
1229 iwlagn_wowlan_program_keys,
1230 &key_data);
1231 mutex_lock(&priv->shrd->mutex);
1232 if (key_data.error) {
1233 ret = -EIO;
1234 goto out;
1235 }
1236
1237 if (key_data.use_rsc_tsc) {
1238 struct iwl_host_cmd rsc_tsc_cmd = {
1239 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
1240 .flags = CMD_SYNC,
1241 .data[0] = key_data.rsc_tsc,
1242 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1243 .len[0] = sizeof(*key_data.rsc_tsc),
1244 };
1245
1246 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
1247 if (ret)
1248 goto out;
1249 }
1250
1251 if (key_data.use_tkip) {
1252 ret = iwl_trans_send_cmd_pdu(trans(priv),
1253 REPLY_WOWLAN_TKIP_PARAMS,
1254 CMD_SYNC, sizeof(tkip_cmd),
1255 &tkip_cmd);
1256 if (ret)
1257 goto out;
1258 }
1259
1260 if (priv->have_rekey_data) {
1261 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1262 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
1263 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1264 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
1265 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1266 kek_kck_cmd.replay_ctr = priv->replay_ctr;
1267
1268 ret = iwl_trans_send_cmd_pdu(trans(priv),
1269 REPLY_WOWLAN_KEK_KCK_MATERIAL,
1270 CMD_SYNC, sizeof(kek_kck_cmd),
1271 &kek_kck_cmd);
1272 if (ret)
1273 goto out;
1274 }
1275 }
1276
1277 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_D3_CONFIG, CMD_SYNC,
1278 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1279 if (ret)
1280 goto out;
1281
1282 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
1283 CMD_SYNC, sizeof(wakeup_filter_cmd),
1284 &wakeup_filter_cmd);
1285 if (ret)
1286 goto out;
1287
1288 ret = iwlagn_send_patterns(priv, wowlan);
1289 out:
1290 kfree(key_data.rsc_tsc);
1291 return ret;
1292 }
1293 #endif
1294