1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63 #include <net/mac80211.h>
64
65 #include "iwl-trans.h"
66 #include "iwl-op-mode.h"
67 #include "iwl-fw.h"
68 #include "iwl-debug.h"
69 #include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
70 #include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
71 #include "iwl-eeprom-parse.h"
72
73 #include "mvm.h"
74 #include "iwl-phy-db.h"
75
76 #define MVM_UCODE_ALIVE_TIMEOUT HZ
77 #define MVM_UCODE_CALIB_TIMEOUT (2*HZ)
78
79 #define UCODE_VALID_OK cpu_to_le32(0x1)
80
81 /* Default calibration values for WkP - set to INIT image w/o running */
82 static const u8 wkp_calib_values_rx_iq_skew[] = { 0x00, 0x00, 0x01, 0x00 };
83 static const u8 wkp_calib_values_tx_iq_skew[] = { 0x01, 0x00, 0x00, 0x00 };
84
85 struct iwl_calib_default_data {
86 u16 size;
87 void *data;
88 };
89
90 #define CALIB_SIZE_N_DATA(_buf) {.size = sizeof(_buf), .data = &_buf}
91
92 static const struct iwl_calib_default_data wkp_calib_default_data[12] = {
93 [9] = CALIB_SIZE_N_DATA(wkp_calib_values_tx_iq_skew),
94 [11] = CALIB_SIZE_N_DATA(wkp_calib_values_rx_iq_skew),
95 };
96
97 struct iwl_mvm_alive_data {
98 bool valid;
99 u32 scd_base_addr;
100 };
101
102 static inline const struct fw_img *
iwl_get_ucode_image(struct iwl_mvm * mvm,enum iwl_ucode_type ucode_type)103 iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
104 {
105 if (ucode_type >= IWL_UCODE_TYPE_MAX)
106 return NULL;
107
108 return &mvm->fw->img[ucode_type];
109 }
110
iwl_send_tx_ant_cfg(struct iwl_mvm * mvm,u8 valid_tx_ant)111 static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
112 {
113 struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
114 .valid = cpu_to_le32(valid_tx_ant),
115 };
116
117 IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
118 return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, CMD_SYNC,
119 sizeof(tx_ant_cmd), &tx_ant_cmd);
120 }
121
iwl_alive_fn(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)122 static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
123 struct iwl_rx_packet *pkt, void *data)
124 {
125 struct iwl_mvm *mvm =
126 container_of(notif_wait, struct iwl_mvm, notif_wait);
127 struct iwl_mvm_alive_data *alive_data = data;
128 struct mvm_alive_resp *palive;
129
130 palive = (void *)pkt->data;
131
132 mvm->error_event_table = le32_to_cpu(palive->error_event_table_ptr);
133 mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
134 alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
135
136 alive_data->valid = le16_to_cpu(palive->status) == IWL_ALIVE_STATUS_OK;
137 IWL_DEBUG_FW(mvm,
138 "Alive ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
139 le16_to_cpu(palive->status), palive->ver_type,
140 palive->ver_subtype, palive->flags);
141
142 return true;
143 }
144
iwl_wait_phy_db_entry(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)145 static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
146 struct iwl_rx_packet *pkt, void *data)
147 {
148 struct iwl_phy_db *phy_db = data;
149
150 if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
151 WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
152 return true;
153 }
154
155 WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
156
157 return false;
158 }
159
iwl_mvm_load_ucode_wait_alive(struct iwl_mvm * mvm,enum iwl_ucode_type ucode_type)160 static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
161 enum iwl_ucode_type ucode_type)
162 {
163 struct iwl_notification_wait alive_wait;
164 struct iwl_mvm_alive_data alive_data;
165 const struct fw_img *fw;
166 int ret, i;
167 enum iwl_ucode_type old_type = mvm->cur_ucode;
168 static const u8 alive_cmd[] = { MVM_ALIVE };
169
170 mvm->cur_ucode = ucode_type;
171 fw = iwl_get_ucode_image(mvm, ucode_type);
172
173 mvm->ucode_loaded = false;
174
175 if (!fw)
176 return -EINVAL;
177
178 iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
179 alive_cmd, ARRAY_SIZE(alive_cmd),
180 iwl_alive_fn, &alive_data);
181
182 ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
183 if (ret) {
184 mvm->cur_ucode = old_type;
185 iwl_remove_notification(&mvm->notif_wait, &alive_wait);
186 return ret;
187 }
188
189 /*
190 * Some things may run in the background now, but we
191 * just wait for the ALIVE notification here.
192 */
193 ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
194 MVM_UCODE_ALIVE_TIMEOUT);
195 if (ret) {
196 mvm->cur_ucode = old_type;
197 return ret;
198 }
199
200 if (!alive_data.valid) {
201 IWL_ERR(mvm, "Loaded ucode is not valid!\n");
202 mvm->cur_ucode = old_type;
203 return -EIO;
204 }
205
206 iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
207
208 /*
209 * Note: all the queues are enabled as part of the interface
210 * initialization, but in firmware restart scenarios they
211 * could be stopped, so wake them up. In firmware restart,
212 * mac80211 will have the queues stopped as well until the
213 * reconfiguration completes. During normal startup, they
214 * will be empty.
215 */
216
217 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
218 if (i < IWL_MVM_FIRST_AGG_QUEUE && i != IWL_MVM_CMD_QUEUE)
219 mvm->queue_to_mac80211[i] = i;
220 else
221 mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
222 atomic_set(&mvm->queue_stop_count[i], 0);
223 }
224
225 mvm->transport_queue_stop = 0;
226
227 mvm->ucode_loaded = true;
228
229 return 0;
230 }
231
iwl_send_phy_cfg_cmd(struct iwl_mvm * mvm)232 static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
233 {
234 struct iwl_phy_cfg_cmd phy_cfg_cmd;
235 enum iwl_ucode_type ucode_type = mvm->cur_ucode;
236
237 /* Set parameters */
238 phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
239 phy_cfg_cmd.calib_control.event_trigger =
240 mvm->fw->default_calib[ucode_type].event_trigger;
241 phy_cfg_cmd.calib_control.flow_trigger =
242 mvm->fw->default_calib[ucode_type].flow_trigger;
243
244 IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
245 phy_cfg_cmd.phy_cfg);
246
247 return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, CMD_SYNC,
248 sizeof(phy_cfg_cmd), &phy_cfg_cmd);
249 }
250
iwl_set_default_calibrations(struct iwl_mvm * mvm)251 static int iwl_set_default_calibrations(struct iwl_mvm *mvm)
252 {
253 u8 cmd_raw[16]; /* holds the variable size commands */
254 struct iwl_set_calib_default_cmd *cmd =
255 (struct iwl_set_calib_default_cmd *)cmd_raw;
256 int ret, i;
257
258 /* Setting default values for calibrations we don't run */
259 for (i = 0; i < ARRAY_SIZE(wkp_calib_default_data); i++) {
260 u16 cmd_len;
261
262 if (wkp_calib_default_data[i].size == 0)
263 continue;
264
265 memset(cmd_raw, 0, sizeof(cmd_raw));
266 cmd_len = wkp_calib_default_data[i].size + sizeof(cmd);
267 cmd->calib_index = cpu_to_le16(i);
268 cmd->length = cpu_to_le16(wkp_calib_default_data[i].size);
269 if (WARN_ONCE(cmd_len > sizeof(cmd_raw),
270 "Need to enlarge cmd_raw to %d\n", cmd_len))
271 break;
272 memcpy(cmd->data, wkp_calib_default_data[i].data,
273 wkp_calib_default_data[i].size);
274 ret = iwl_mvm_send_cmd_pdu(mvm, SET_CALIB_DEFAULT_CMD, 0,
275 sizeof(*cmd) +
276 wkp_calib_default_data[i].size,
277 cmd);
278 if (ret)
279 return ret;
280 }
281
282 return 0;
283 }
284
iwl_run_init_mvm_ucode(struct iwl_mvm * mvm,bool read_nvm)285 int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
286 {
287 struct iwl_notification_wait calib_wait;
288 static const u8 init_complete[] = {
289 INIT_COMPLETE_NOTIF,
290 CALIB_RES_NOTIF_PHY_DB
291 };
292 int ret;
293
294 lockdep_assert_held(&mvm->mutex);
295
296 if (mvm->init_ucode_run)
297 return 0;
298
299 iwl_init_notification_wait(&mvm->notif_wait,
300 &calib_wait,
301 init_complete,
302 ARRAY_SIZE(init_complete),
303 iwl_wait_phy_db_entry,
304 mvm->phy_db);
305
306 /* Will also start the device */
307 ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
308 if (ret) {
309 IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
310 goto error;
311 }
312
313 ret = iwl_send_bt_prio_tbl(mvm);
314 if (ret)
315 goto error;
316
317 if (read_nvm) {
318 /* Read nvm */
319 ret = iwl_nvm_init(mvm);
320 if (ret) {
321 IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
322 goto error;
323 }
324 }
325
326 ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
327 WARN_ON(ret);
328
329 /* Send TX valid antennas before triggering calibrations */
330 ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
331 if (ret)
332 goto error;
333
334 /* need to set default values */
335 ret = iwl_set_default_calibrations(mvm);
336 if (ret)
337 goto error;
338
339 /*
340 * Send phy configurations command to init uCode
341 * to start the 16.0 uCode init image internal calibrations.
342 */
343 ret = iwl_send_phy_cfg_cmd(mvm);
344 if (ret) {
345 IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
346 ret);
347 goto error;
348 }
349
350 /*
351 * Some things may run in the background now, but we
352 * just wait for the calibration complete notification.
353 */
354 ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
355 MVM_UCODE_CALIB_TIMEOUT);
356 if (!ret)
357 mvm->init_ucode_run = true;
358 goto out;
359
360 error:
361 iwl_remove_notification(&mvm->notif_wait, &calib_wait);
362 out:
363 if (!iwlmvm_mod_params.init_dbg) {
364 iwl_trans_stop_device(mvm->trans);
365 } else if (!mvm->nvm_data) {
366 /* we want to debug INIT and we have no NVM - fake */
367 mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
368 sizeof(struct ieee80211_channel) +
369 sizeof(struct ieee80211_rate),
370 GFP_KERNEL);
371 if (!mvm->nvm_data)
372 return -ENOMEM;
373 mvm->nvm_data->valid_rx_ant = 1;
374 mvm->nvm_data->valid_tx_ant = 1;
375 mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
376 mvm->nvm_data->bands[0].n_channels = 1;
377 mvm->nvm_data->bands[0].n_bitrates = 1;
378 mvm->nvm_data->bands[0].bitrates =
379 (void *)mvm->nvm_data->channels + 1;
380 mvm->nvm_data->bands[0].bitrates->hw_value = 10;
381 }
382
383 return ret;
384 }
385
386 #define UCODE_CALIB_TIMEOUT (2*HZ)
387
iwl_mvm_up(struct iwl_mvm * mvm)388 int iwl_mvm_up(struct iwl_mvm *mvm)
389 {
390 int ret, i;
391
392 lockdep_assert_held(&mvm->mutex);
393
394 ret = iwl_trans_start_hw(mvm->trans);
395 if (ret)
396 return ret;
397
398 /* If we were in RFKILL during module loading, load init ucode now */
399 if (!mvm->init_ucode_run) {
400 ret = iwl_run_init_mvm_ucode(mvm, false);
401 if (ret && !iwlmvm_mod_params.init_dbg) {
402 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
403 goto error;
404 }
405 }
406
407 if (iwlmvm_mod_params.init_dbg)
408 return 0;
409
410 ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
411 if (ret) {
412 IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
413 goto error;
414 }
415
416 ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
417 if (ret)
418 goto error;
419
420 ret = iwl_send_bt_prio_tbl(mvm);
421 if (ret)
422 goto error;
423
424 ret = iwl_send_bt_init_conf(mvm);
425 if (ret)
426 goto error;
427
428 /* Send phy db control command and then phy db calibration*/
429 ret = iwl_send_phy_db_data(mvm->phy_db);
430 if (ret)
431 goto error;
432
433 ret = iwl_send_phy_cfg_cmd(mvm);
434 if (ret)
435 goto error;
436
437 /* init the fw <-> mac80211 STA mapping */
438 for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
439 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
440
441 /* Add auxiliary station for scanning */
442 ret = iwl_mvm_add_aux_sta(mvm);
443 if (ret)
444 goto error;
445
446 IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
447
448 return 0;
449 error:
450 iwl_trans_stop_device(mvm->trans);
451 return ret;
452 }
453
iwl_mvm_load_d3_fw(struct iwl_mvm * mvm)454 int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
455 {
456 int ret, i;
457
458 lockdep_assert_held(&mvm->mutex);
459
460 ret = iwl_trans_start_hw(mvm->trans);
461 if (ret)
462 return ret;
463
464 ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
465 if (ret) {
466 IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
467 goto error;
468 }
469
470 ret = iwl_send_tx_ant_cfg(mvm, iwl_fw_valid_tx_ant(mvm->fw));
471 if (ret)
472 goto error;
473
474 /* Send phy db control command and then phy db calibration*/
475 ret = iwl_send_phy_db_data(mvm->phy_db);
476 if (ret)
477 goto error;
478
479 ret = iwl_send_phy_cfg_cmd(mvm);
480 if (ret)
481 goto error;
482
483 /* init the fw <-> mac80211 STA mapping */
484 for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
485 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
486
487 /* Add auxiliary station for scanning */
488 ret = iwl_mvm_add_aux_sta(mvm);
489 if (ret)
490 goto error;
491
492 return 0;
493 error:
494 iwl_trans_stop_device(mvm->trans);
495 return ret;
496 }
497
iwl_mvm_rx_card_state_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb,struct iwl_device_cmd * cmd)498 int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
499 struct iwl_rx_cmd_buffer *rxb,
500 struct iwl_device_cmd *cmd)
501 {
502 struct iwl_rx_packet *pkt = rxb_addr(rxb);
503 struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
504 u32 flags = le32_to_cpu(card_state_notif->flags);
505
506 IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
507 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
508 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
509 (flags & CT_KILL_CARD_DISABLED) ?
510 "Reached" : "Not reached");
511
512 return 0;
513 }
514
iwl_mvm_rx_radio_ver(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb,struct iwl_device_cmd * cmd)515 int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
516 struct iwl_device_cmd *cmd)
517 {
518 struct iwl_rx_packet *pkt = rxb_addr(rxb);
519 struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
520
521 /* TODO: what to do with that? */
522 IWL_DEBUG_INFO(mvm,
523 "Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
524 le32_to_cpu(radio_version->radio_flavor),
525 le32_to_cpu(radio_version->radio_step),
526 le32_to_cpu(radio_version->radio_dash));
527 return 0;
528 }
529