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8ca151b5 JB |
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 LICENSE.GPL. | |
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 <linux/module.h> | |
64 | #include <net/mac80211.h> | |
65 | ||
66 | #include "iwl-notif-wait.h" | |
67 | #include "iwl-trans.h" | |
68 | #include "iwl-op-mode.h" | |
69 | #include "iwl-fw.h" | |
70 | #include "iwl-debug.h" | |
71 | #include "iwl-drv.h" | |
72 | #include "iwl-modparams.h" | |
73 | #include "mvm.h" | |
74 | #include "iwl-phy-db.h" | |
75 | #include "iwl-eeprom-parse.h" | |
76 | #include "iwl-csr.h" | |
77 | #include "iwl-io.h" | |
78 | #include "iwl-prph.h" | |
79 | #include "rs.h" | |
80 | #include "fw-api-scan.h" | |
81 | #include "time-event.h" | |
82 | ||
83 | /* | |
84 | * module name, copyright, version, etc. | |
85 | */ | |
86 | #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux" | |
87 | ||
88 | #define DRV_VERSION IWLWIFI_VERSION | |
89 | ||
90 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
91 | MODULE_VERSION(DRV_VERSION); | |
92 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
93 | MODULE_LICENSE("GPL"); | |
94 | ||
95 | static const struct iwl_op_mode_ops iwl_mvm_ops; | |
96 | ||
97 | struct iwl_mvm_mod_params iwlmvm_mod_params = { | |
98 | .power_scheme = IWL_POWER_SCHEME_BPS, | |
99 | /* rest of fields are 0 by default */ | |
100 | }; | |
101 | ||
102 | module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); | |
103 | MODULE_PARM_DESC(init_dbg, | |
104 | "set to true to debug an ASSERT in INIT fw (default: false"); | |
105 | module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); | |
106 | MODULE_PARM_DESC(power_scheme, | |
107 | "power management scheme: 1-active, 2-balanced, 3-low power, default: 2"); | |
108 | ||
109 | /* | |
110 | * module init and exit functions | |
111 | */ | |
112 | static int __init iwl_mvm_init(void) | |
113 | { | |
114 | int ret; | |
115 | ||
116 | ret = iwl_mvm_rate_control_register(); | |
117 | if (ret) { | |
118 | pr_err("Unable to register rate control algorithm: %d\n", ret); | |
119 | return ret; | |
120 | } | |
121 | ||
122 | ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops); | |
123 | ||
124 | if (ret) { | |
125 | pr_err("Unable to register MVM op_mode: %d\n", ret); | |
126 | iwl_mvm_rate_control_unregister(); | |
127 | } | |
128 | ||
129 | return ret; | |
130 | } | |
131 | module_init(iwl_mvm_init); | |
132 | ||
133 | static void __exit iwl_mvm_exit(void) | |
134 | { | |
135 | iwl_opmode_deregister("iwlmvm"); | |
136 | iwl_mvm_rate_control_unregister(); | |
137 | } | |
138 | module_exit(iwl_mvm_exit); | |
139 | ||
140 | static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode) | |
141 | { | |
142 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
143 | u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash; | |
144 | u32 reg_val = 0; | |
145 | ||
146 | /* | |
147 | * We can't upload the correct value to the INIT image | |
148 | * as we don't have nvm_data by that time. | |
149 | * | |
150 | * TODO: Figure out what we should do here | |
151 | */ | |
152 | if (mvm->nvm_data) { | |
153 | radio_cfg_type = mvm->nvm_data->radio_cfg_type; | |
154 | radio_cfg_step = mvm->nvm_data->radio_cfg_step; | |
155 | radio_cfg_dash = mvm->nvm_data->radio_cfg_dash; | |
156 | } else { | |
157 | radio_cfg_type = 0; | |
158 | radio_cfg_step = 0; | |
159 | radio_cfg_dash = 0; | |
160 | } | |
161 | ||
162 | /* SKU control */ | |
163 | reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) << | |
164 | CSR_HW_IF_CONFIG_REG_POS_MAC_STEP; | |
165 | reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) << | |
166 | CSR_HW_IF_CONFIG_REG_POS_MAC_DASH; | |
167 | ||
168 | /* radio configuration */ | |
169 | reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE; | |
170 | reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP; | |
171 | reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH; | |
172 | ||
173 | WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) & | |
174 | ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE); | |
175 | ||
176 | /* silicon bits */ | |
177 | reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI; | |
178 | reg_val |= CSR_HW_IF_CONFIG_REG_BIT_MAC_SI; | |
179 | ||
e139dc4a LE |
180 | iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG, |
181 | CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH | | |
182 | CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP | | |
183 | CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE | | |
184 | CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP | | |
185 | CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH | | |
186 | CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | | |
187 | CSR_HW_IF_CONFIG_REG_BIT_MAC_SI, | |
188 | reg_val); | |
8ca151b5 JB |
189 | |
190 | IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type, | |
191 | radio_cfg_step, radio_cfg_dash); | |
192 | ||
193 | /* | |
194 | * W/A : NIC is stuck in a reset state after Early PCIe power off | |
195 | * (PCIe power is lost before PERST# is asserted), causing ME FW | |
196 | * to lose ownership and not being able to obtain it back. | |
197 | */ | |
198 | iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG, | |
199 | APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS, | |
200 | ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS); | |
201 | } | |
202 | ||
203 | struct iwl_rx_handlers { | |
204 | u8 cmd_id; | |
205 | bool async; | |
206 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
207 | struct iwl_device_cmd *cmd); | |
208 | }; | |
209 | ||
210 | #define RX_HANDLER(_cmd_id, _fn, _async) \ | |
211 | { .cmd_id = _cmd_id , .fn = _fn , .async = _async } | |
212 | ||
213 | /* | |
214 | * Handlers for fw notifications | |
215 | * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME | |
216 | * This list should be in order of frequency for performance purposes. | |
217 | * | |
218 | * The handler can be SYNC - this means that it will be called in the Rx path | |
219 | * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and | |
220 | * only in this case!), it should be set as ASYNC. In that case, it will be | |
221 | * called from a worker with mvm->mutex held. | |
222 | */ | |
223 | static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { | |
224 | RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false), | |
225 | RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false), | |
226 | RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false), | |
227 | RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false), | |
228 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), | |
229 | ||
230 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), | |
231 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false), | |
232 | ||
233 | RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false), | |
234 | RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false), | |
235 | ||
236 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), | |
237 | }; | |
238 | #undef RX_HANDLER | |
239 | #define CMD(x) [x] = #x | |
240 | ||
241 | static const char *iwl_mvm_cmd_strings[REPLY_MAX] = { | |
242 | CMD(MVM_ALIVE), | |
243 | CMD(REPLY_ERROR), | |
244 | CMD(INIT_COMPLETE_NOTIF), | |
245 | CMD(PHY_CONTEXT_CMD), | |
246 | CMD(MGMT_MCAST_KEY), | |
247 | CMD(TX_CMD), | |
248 | CMD(TXPATH_FLUSH), | |
249 | CMD(MAC_CONTEXT_CMD), | |
250 | CMD(TIME_EVENT_CMD), | |
251 | CMD(TIME_EVENT_NOTIFICATION), | |
252 | CMD(BINDING_CONTEXT_CMD), | |
253 | CMD(TIME_QUOTA_CMD), | |
254 | CMD(RADIO_VERSION_NOTIFICATION), | |
255 | CMD(SCAN_REQUEST_CMD), | |
256 | CMD(SCAN_ABORT_CMD), | |
257 | CMD(SCAN_START_NOTIFICATION), | |
258 | CMD(SCAN_RESULTS_NOTIFICATION), | |
259 | CMD(SCAN_COMPLETE_NOTIFICATION), | |
260 | CMD(NVM_ACCESS_CMD), | |
261 | CMD(PHY_CONFIGURATION_CMD), | |
262 | CMD(CALIB_RES_NOTIF_PHY_DB), | |
263 | CMD(SET_CALIB_DEFAULT_CMD), | |
264 | CMD(CALIBRATION_COMPLETE_NOTIFICATION), | |
265 | CMD(ADD_STA), | |
266 | CMD(REMOVE_STA), | |
267 | CMD(LQ_CMD), | |
268 | CMD(SCAN_OFFLOAD_CONFIG_CMD), | |
269 | CMD(SCAN_OFFLOAD_REQUEST_CMD), | |
270 | CMD(SCAN_OFFLOAD_ABORT_CMD), | |
271 | CMD(SCAN_OFFLOAD_COMPLETE), | |
272 | CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD), | |
273 | CMD(POWER_TABLE_CMD), | |
274 | CMD(WEP_KEY), | |
275 | CMD(REPLY_RX_PHY_CMD), | |
276 | CMD(REPLY_RX_MPDU_CMD), | |
277 | CMD(BEACON_TEMPLATE_CMD), | |
278 | CMD(STATISTICS_NOTIFICATION), | |
279 | CMD(TX_ANT_CONFIGURATION_CMD), | |
280 | CMD(D3_CONFIG_CMD), | |
281 | CMD(PROT_OFFLOAD_CONFIG_CMD), | |
282 | CMD(OFFLOADS_QUERY_CMD), | |
283 | CMD(REMOTE_WAKE_CONFIG_CMD), | |
284 | CMD(WOWLAN_PATTERNS), | |
285 | CMD(WOWLAN_CONFIGURATION), | |
286 | CMD(WOWLAN_TSC_RSC_PARAM), | |
287 | CMD(WOWLAN_TKIP_PARAM), | |
288 | CMD(WOWLAN_KEK_KCK_MATERIAL), | |
289 | CMD(WOWLAN_GET_STATUSES), | |
290 | CMD(WOWLAN_TX_POWER_PER_DB), | |
291 | CMD(NET_DETECT_CONFIG_CMD), | |
292 | CMD(NET_DETECT_PROFILES_QUERY_CMD), | |
293 | CMD(NET_DETECT_PROFILES_CMD), | |
294 | CMD(NET_DETECT_HOTSPOTS_CMD), | |
295 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), | |
296 | }; | |
297 | #undef CMD | |
298 | ||
299 | /* this forward declaration can avoid to export the function */ | |
300 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); | |
301 | ||
302 | static struct iwl_op_mode * | |
303 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, | |
304 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) | |
305 | { | |
306 | struct ieee80211_hw *hw; | |
307 | struct iwl_op_mode *op_mode; | |
308 | struct iwl_mvm *mvm; | |
309 | struct iwl_trans_config trans_cfg = {}; | |
310 | static const u8 no_reclaim_cmds[] = { | |
311 | TX_CMD, | |
312 | }; | |
313 | int err, scan_size; | |
314 | ||
315 | switch (cfg->device_family) { | |
316 | case IWL_DEVICE_FAMILY_6030: | |
317 | case IWL_DEVICE_FAMILY_6005: | |
318 | case IWL_DEVICE_FAMILY_7000: | |
319 | break; | |
320 | default: | |
321 | IWL_ERR(trans, "Trying to load mvm on an unsupported device\n"); | |
322 | return NULL; | |
323 | } | |
324 | ||
325 | /******************************** | |
326 | * 1. Allocating and configuring HW data | |
327 | ********************************/ | |
328 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + | |
329 | sizeof(struct iwl_mvm), | |
330 | &iwl_mvm_hw_ops); | |
331 | if (!hw) | |
332 | return NULL; | |
333 | ||
334 | op_mode = hw->priv; | |
335 | op_mode->ops = &iwl_mvm_ops; | |
336 | op_mode->trans = trans; | |
337 | ||
338 | mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
339 | mvm->dev = trans->dev; | |
340 | mvm->trans = trans; | |
341 | mvm->cfg = cfg; | |
342 | mvm->fw = fw; | |
343 | mvm->hw = hw; | |
344 | ||
345 | mutex_init(&mvm->mutex); | |
346 | spin_lock_init(&mvm->async_handlers_lock); | |
347 | INIT_LIST_HEAD(&mvm->time_event_list); | |
348 | INIT_LIST_HEAD(&mvm->async_handlers_list); | |
349 | spin_lock_init(&mvm->time_event_lock); | |
350 | ||
351 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); | |
352 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); | |
353 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); | |
354 | ||
355 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); | |
356 | ||
357 | /* | |
358 | * Populate the state variables that the transport layer needs | |
359 | * to know about. | |
360 | */ | |
361 | trans_cfg.op_mode = op_mode; | |
362 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; | |
363 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); | |
364 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; | |
365 | ||
366 | /* TODO: this should really be a TLV */ | |
367 | if (cfg->device_family == IWL_DEVICE_FAMILY_7000) | |
368 | trans_cfg.bc_table_dword = true; | |
369 | ||
370 | if (!iwlwifi_mod_params.wd_disable) | |
371 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; | |
372 | else | |
373 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; | |
374 | ||
375 | trans_cfg.command_names = iwl_mvm_cmd_strings; | |
376 | ||
377 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; | |
378 | trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO; | |
379 | ||
380 | snprintf(mvm->hw->wiphy->fw_version, | |
381 | sizeof(mvm->hw->wiphy->fw_version), | |
382 | "%s", fw->fw_version); | |
383 | ||
384 | /* Configure transport layer */ | |
385 | iwl_trans_configure(mvm->trans, &trans_cfg); | |
386 | ||
387 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; | |
388 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); | |
389 | ||
390 | /* set up notification wait support */ | |
391 | iwl_notification_wait_init(&mvm->notif_wait); | |
392 | ||
393 | /* Init phy db */ | |
394 | mvm->phy_db = iwl_phy_db_init(trans); | |
395 | if (!mvm->phy_db) { | |
396 | IWL_ERR(mvm, "Cannot init phy_db\n"); | |
397 | goto out_free; | |
398 | } | |
399 | ||
400 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", | |
401 | mvm->cfg->name, mvm->trans->hw_rev); | |
402 | ||
403 | err = iwl_trans_start_hw(mvm->trans); | |
404 | if (err) | |
405 | goto out_free; | |
406 | ||
407 | mutex_lock(&mvm->mutex); | |
408 | err = iwl_run_init_mvm_ucode(mvm, true); | |
409 | mutex_unlock(&mvm->mutex); | |
410 | if (err && !iwlmvm_mod_params.init_dbg) { | |
411 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); | |
412 | goto out_free; | |
413 | } | |
414 | ||
415 | /* Stop the hw after the ALIVE and NVM has been read */ | |
416 | if (!iwlmvm_mod_params.init_dbg) | |
417 | iwl_trans_stop_hw(mvm->trans, false); | |
418 | ||
419 | scan_size = sizeof(struct iwl_scan_cmd) + | |
420 | mvm->fw->ucode_capa.max_probe_length + | |
421 | (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)); | |
422 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); | |
423 | if (!mvm->scan_cmd) | |
424 | goto out_free; | |
425 | ||
426 | err = iwl_mvm_mac_setup_register(mvm); | |
427 | if (err) | |
428 | goto out_free; | |
429 | ||
430 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); | |
431 | if (err) | |
432 | goto out_unregister; | |
433 | ||
434 | return op_mode; | |
435 | ||
436 | out_unregister: | |
437 | ieee80211_unregister_hw(mvm->hw); | |
438 | out_free: | |
439 | iwl_phy_db_free(mvm->phy_db); | |
440 | kfree(mvm->scan_cmd); | |
441 | kfree(mvm->eeprom_blob); | |
442 | iwl_trans_stop_hw(trans, true); | |
443 | ieee80211_free_hw(mvm->hw); | |
444 | return NULL; | |
445 | } | |
446 | ||
447 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) | |
448 | { | |
449 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
450 | int i; | |
451 | ||
452 | iwl_mvm_leds_exit(mvm); | |
453 | ||
454 | ieee80211_unregister_hw(mvm->hw); | |
455 | ||
456 | kfree(mvm->scan_cmd); | |
457 | ||
458 | iwl_trans_stop_hw(mvm->trans, true); | |
459 | ||
460 | iwl_phy_db_free(mvm->phy_db); | |
461 | mvm->phy_db = NULL; | |
462 | ||
463 | kfree(mvm->eeprom_blob); | |
464 | iwl_free_nvm_data(mvm->nvm_data); | |
465 | for (i = 0; i < NVM_NUM_OF_SECTIONS; i++) | |
466 | kfree(mvm->nvm_sections[i].data); | |
467 | ||
468 | ieee80211_free_hw(mvm->hw); | |
469 | } | |
470 | ||
471 | struct iwl_async_handler_entry { | |
472 | struct list_head list; | |
473 | struct iwl_rx_cmd_buffer rxb; | |
474 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
475 | struct iwl_device_cmd *cmd); | |
476 | }; | |
477 | ||
478 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) | |
479 | { | |
480 | struct iwl_async_handler_entry *entry, *tmp; | |
481 | ||
482 | spin_lock_bh(&mvm->async_handlers_lock); | |
483 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { | |
484 | iwl_free_rxb(&entry->rxb); | |
485 | list_del(&entry->list); | |
486 | kfree(entry); | |
487 | } | |
488 | spin_unlock_bh(&mvm->async_handlers_lock); | |
489 | } | |
490 | ||
491 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) | |
492 | { | |
493 | struct iwl_mvm *mvm = | |
494 | container_of(wk, struct iwl_mvm, async_handlers_wk); | |
495 | struct iwl_async_handler_entry *entry, *tmp; | |
496 | struct list_head local_list; | |
497 | ||
498 | INIT_LIST_HEAD(&local_list); | |
499 | ||
500 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ | |
501 | mutex_lock(&mvm->mutex); | |
502 | ||
503 | /* | |
504 | * Sync with Rx path with a lock. Remove all the entries from this list, | |
505 | * add them to a local one (lock free), and then handle them. | |
506 | */ | |
507 | spin_lock_bh(&mvm->async_handlers_lock); | |
508 | list_splice_init(&mvm->async_handlers_list, &local_list); | |
509 | spin_unlock_bh(&mvm->async_handlers_lock); | |
510 | ||
511 | list_for_each_entry_safe(entry, tmp, &local_list, list) { | |
512 | if (entry->fn(mvm, &entry->rxb, NULL)) | |
513 | IWL_WARN(mvm, | |
514 | "returned value from ASYNC handlers are ignored\n"); | |
515 | iwl_free_rxb(&entry->rxb); | |
516 | list_del(&entry->list); | |
517 | kfree(entry); | |
518 | } | |
519 | mutex_unlock(&mvm->mutex); | |
520 | } | |
521 | ||
522 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, | |
523 | struct iwl_rx_cmd_buffer *rxb, | |
524 | struct iwl_device_cmd *cmd) | |
525 | { | |
526 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
527 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
528 | u8 i; | |
529 | ||
530 | /* | |
531 | * Do the notification wait before RX handlers so | |
532 | * even if the RX handler consumes the RXB we have | |
533 | * access to it in the notification wait entry. | |
534 | */ | |
535 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); | |
536 | ||
537 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { | |
538 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; | |
36eed56a EG |
539 | struct iwl_async_handler_entry *entry; |
540 | ||
541 | if (rx_h->cmd_id != pkt->hdr.cmd) | |
542 | continue; | |
543 | ||
544 | if (!rx_h->async) | |
545 | return rx_h->fn(mvm, rxb, cmd); | |
546 | ||
547 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
548 | /* we can't do much... */ | |
549 | if (!entry) | |
550 | return 0; | |
551 | ||
552 | entry->rxb._page = rxb_steal_page(rxb); | |
553 | entry->rxb._offset = rxb->_offset; | |
554 | entry->rxb._rx_page_order = rxb->_rx_page_order; | |
555 | entry->fn = rx_h->fn; | |
556 | spin_lock(&mvm->async_handlers_lock); | |
557 | list_add_tail(&entry->list, &mvm->async_handlers_list); | |
558 | spin_unlock(&mvm->async_handlers_lock); | |
559 | schedule_work(&mvm->async_handlers_wk); | |
560 | break; | |
8ca151b5 JB |
561 | } |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
567 | { | |
568 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
569 | int mq = mvm->queue_to_mac80211[queue]; | |
570 | ||
571 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
572 | return; | |
573 | ||
574 | if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) { | |
575 | IWL_DEBUG_TX_QUEUES(mvm, | |
576 | "queue %d (mac80211 %d) already stopped\n", | |
577 | queue, mq); | |
578 | return; | |
579 | } | |
580 | ||
581 | set_bit(mq, &mvm->transport_queue_stop); | |
582 | ieee80211_stop_queue(mvm->hw, mq); | |
583 | } | |
584 | ||
585 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
586 | { | |
587 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
588 | int mq = mvm->queue_to_mac80211[queue]; | |
589 | ||
590 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
591 | return; | |
592 | ||
593 | if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) { | |
594 | IWL_DEBUG_TX_QUEUES(mvm, | |
595 | "queue %d (mac80211 %d) already awake\n", | |
596 | queue, mq); | |
597 | return; | |
598 | } | |
599 | ||
600 | clear_bit(mq, &mvm->transport_queue_stop); | |
601 | ||
602 | ieee80211_wake_queue(mvm->hw, mq); | |
603 | } | |
604 | ||
605 | static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) | |
606 | { | |
607 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
608 | ||
609 | if (state) | |
610 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
611 | else | |
612 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
613 | ||
614 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state); | |
615 | } | |
616 | ||
617 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) | |
618 | { | |
619 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
620 | struct ieee80211_tx_info *info; | |
621 | ||
622 | info = IEEE80211_SKB_CB(skb); | |
623 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
624 | ieee80211_free_txskb(mvm->hw, skb); | |
625 | } | |
626 | ||
627 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) | |
628 | { | |
629 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
630 | ||
631 | iwl_mvm_dump_nic_error_log(mvm); | |
632 | ||
633 | iwl_abort_notification_waits(&mvm->notif_wait); | |
634 | ||
635 | /* | |
636 | * If we're restarting already, don't cycle restarts. | |
637 | * If INIT fw asserted, it will likely fail again. | |
638 | * If WoWLAN fw asserted, don't restart either, mac80211 | |
639 | * can't recover this since we're already half suspended. | |
640 | */ | |
641 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
642 | IWL_ERR(mvm, "Firmware error during reconfiguration! Abort.\n"); | |
643 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && | |
644 | iwlwifi_mod_params.restart_fw) { | |
645 | /* | |
646 | * This is a bit racy, but worst case we tell mac80211 about | |
647 | * a stopped/aborted (sched) scan when that was already done | |
648 | * which is not a problem. It is necessary to abort any scan | |
649 | * here because mac80211 requires having the scan cleared | |
650 | * before restarting. | |
651 | * We'll reset the scan_status to NONE in restart cleanup in | |
652 | * the next start() call from mac80211. | |
653 | */ | |
654 | switch (mvm->scan_status) { | |
655 | case IWL_MVM_SCAN_NONE: | |
656 | break; | |
657 | case IWL_MVM_SCAN_OS: | |
658 | ieee80211_scan_completed(mvm->hw, true); | |
659 | break; | |
660 | } | |
661 | ||
662 | ieee80211_restart_hw(mvm->hw); | |
663 | } | |
664 | } | |
665 | ||
666 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) | |
667 | { | |
668 | WARN_ON(1); | |
669 | } | |
670 | ||
671 | static const struct iwl_op_mode_ops iwl_mvm_ops = { | |
672 | .start = iwl_op_mode_mvm_start, | |
673 | .stop = iwl_op_mode_mvm_stop, | |
674 | .rx = iwl_mvm_rx_dispatch, | |
675 | .queue_full = iwl_mvm_stop_sw_queue, | |
676 | .queue_not_full = iwl_mvm_wake_sw_queue, | |
677 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, | |
678 | .free_skb = iwl_mvm_free_skb, | |
679 | .nic_error = iwl_mvm_nic_error, | |
680 | .cmd_queue_full = iwl_mvm_cmd_queue_full, | |
681 | .nic_config = iwl_mvm_nic_config, | |
682 | }; |