blob: d33cc9cc7d3f7e9202891d835db620d04bd7bff4 [file] [log] [blame]
Wey-Yi Guy73356132011-11-10 06:55:11 -08001/******************************************************************************
2 *
Wey-Yi Guy4e318262011-12-27 11:21:32 -08003 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
Wey-Yi Guy73356132011-11-10 06:55:11 -08004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
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/kernel.h>
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/slab.h>
33#include <linux/dma-mapping.h>
34#include <linux/delay.h>
35#include <linux/sched.h>
36#include <linux/skbuff.h>
37#include <linux/netdevice.h>
Wey-Yi Guy73356132011-11-10 06:55:11 -080038#include <linux/etherdevice.h>
39#include <linux/if_arp.h>
40
41#include <net/mac80211.h>
42
43#include <asm/div64.h>
44
45#include "iwl-eeprom.h"
46#include "iwl-dev.h"
Wey-Yi Guy73356132011-11-10 06:55:11 -080047#include "iwl-io.h"
48#include "iwl-agn-calib.h"
49#include "iwl-agn.h"
Wey-Yi Guy73356132011-11-10 06:55:11 -080050#include "iwl-trans.h"
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +020051#include "iwl-op-mode.h"
Johannes Berg65de7e82012-04-17 07:36:30 -070052#include "iwl-modparams.h"
Wey-Yi Guy73356132011-11-10 06:55:11 -080053
54/*****************************************************************************
55 *
56 * mac80211 entry point functions
57 *
58 *****************************************************************************/
59
60static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
61 {
62 .max = 1,
63 .types = BIT(NL80211_IFTYPE_STATION),
64 },
65 {
66 .max = 1,
67 .types = BIT(NL80211_IFTYPE_AP),
68 },
69};
70
71static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
72 {
73 .max = 2,
74 .types = BIT(NL80211_IFTYPE_STATION),
75 },
76};
77
78static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
79 {
80 .max = 1,
81 .types = BIT(NL80211_IFTYPE_STATION),
82 },
83 {
84 .max = 1,
85 .types = BIT(NL80211_IFTYPE_P2P_GO) |
86 BIT(NL80211_IFTYPE_AP),
87 },
88};
89
90static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
91 {
92 .max = 2,
93 .types = BIT(NL80211_IFTYPE_STATION),
94 },
95 {
96 .max = 1,
97 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
98 },
99};
100
101static const struct ieee80211_iface_combination
102iwlagn_iface_combinations_dualmode[] = {
103 { .num_different_channels = 1,
104 .max_interfaces = 2,
105 .beacon_int_infra_match = true,
106 .limits = iwlagn_sta_ap_limits,
107 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
108 },
109 { .num_different_channels = 1,
110 .max_interfaces = 2,
111 .limits = iwlagn_2sta_limits,
112 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
113 },
114};
115
116static const struct ieee80211_iface_combination
117iwlagn_iface_combinations_p2p[] = {
118 { .num_different_channels = 1,
119 .max_interfaces = 2,
120 .beacon_int_infra_match = true,
121 .limits = iwlagn_p2p_sta_go_limits,
122 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
123 },
124 { .num_different_channels = 1,
125 .max_interfaces = 2,
126 .limits = iwlagn_p2p_2sta_limits,
127 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
128 },
129};
130
131/*
132 * Not a mac80211 entry point function, but it fits in with all the
133 * other mac80211 functions grouped here.
134 */
135int iwlagn_mac_setup_register(struct iwl_priv *priv,
Johannes Berg0692fe42012-03-06 13:30:37 -0800136 const struct iwl_ucode_capabilities *capa)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800137{
138 int ret;
139 struct ieee80211_hw *hw = priv->hw;
140 struct iwl_rxon_context *ctx;
141
142 hw->rate_control_algorithm = "iwl-agn-rs";
143
144 /* Tell mac80211 our characteristics */
145 hw->flags = IEEE80211_HW_SIGNAL_DBM |
146 IEEE80211_HW_AMPDU_AGGREGATION |
147 IEEE80211_HW_NEED_DTIM_PERIOD |
148 IEEE80211_HW_SPECTRUM_MGMT |
Johannes Berg14791772012-04-17 07:39:03 -0700149 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
150 IEEE80211_HW_QUEUE_CONTROL |
151 IEEE80211_HW_SUPPORTS_PS |
152 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
153 IEEE80211_HW_SCAN_WHILE_IDLE;
154
155 hw->offchannel_tx_hw_queue = IWL_AUX_QUEUE;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800156
157 /*
158 * Including the following line will crash some AP's. This
159 * workaround removes the stimulus which causes the crash until
160 * the AP software can be fixed.
161 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
162 */
163
Johannes Berg9e295112012-04-09 17:46:55 -0700164 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800165 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
166 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
167
David Spinadel18c57d32012-03-07 09:52:31 -0800168#ifndef CONFIG_IWLWIFI_EXPERIMENTAL_MFP
169 /* enable 11w if the uCode advertise */
Wey-Yi Guy73356132011-11-10 06:55:11 -0800170 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
David Spinadel18c57d32012-03-07 09:52:31 -0800171#endif /* !CONFIG_IWLWIFI_EXPERIMENTAL_MFP */
Wey-Yi Guy73356132011-11-10 06:55:11 -0800172 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
173
174 hw->sta_data_size = sizeof(struct iwl_station_priv);
175 hw->vif_data_size = sizeof(struct iwl_vif_priv);
176
177 for_each_context(priv, ctx) {
178 hw->wiphy->interface_modes |= ctx->interface_modes;
179 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
180 }
181
182 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
183
184 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
185 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
186 hw->wiphy->n_iface_combinations =
187 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
188 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
189 hw->wiphy->iface_combinations =
190 iwlagn_iface_combinations_dualmode;
191 hw->wiphy->n_iface_combinations =
192 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
193 }
194
195 hw->wiphy->max_remain_on_channel_duration = 1000;
196
197 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
198 WIPHY_FLAG_DISABLE_BEACON_HINTS |
199 WIPHY_FLAG_IBSS_RSN;
200
David Spinadel6dfa8d02012-03-10 13:00:14 -0800201 if (priv->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700202 priv->trans->ops->wowlan_suspend &&
203 device_can_wakeup(priv->trans->dev)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800204 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
205 WIPHY_WOWLAN_DISCONNECT |
206 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
207 WIPHY_WOWLAN_RFKILL_RELEASE;
Johannes Berg65de7e82012-04-17 07:36:30 -0700208 if (!iwlwifi_mod_params.sw_crypto)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800209 hw->wiphy->wowlan.flags |=
210 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
211 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
212
213 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
214 hw->wiphy->wowlan.pattern_min_len =
215 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
216 hw->wiphy->wowlan.pattern_max_len =
217 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
218 }
219
Johannes Berg65de7e82012-04-17 07:36:30 -0700220 if (iwlwifi_mod_params.power_save)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800221 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
222 else
223 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
224
225 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
226 /* we create the 802.11 header and a zero-length SSID element */
227 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
228
Johannes Berg14791772012-04-17 07:39:03 -0700229 /*
230 * We don't use all queues: 4 and 9 are unused and any
231 * aggregation queue gets mapped down to the AC queue.
232 */
233 hw->queues = IWLAGN_FIRST_AMPDU_QUEUE;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800234
235 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
236
237 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
238 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
239 &priv->bands[IEEE80211_BAND_2GHZ];
240 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
241 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
242 &priv->bands[IEEE80211_BAND_5GHZ];
243
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700244 hw->wiphy->hw_version = priv->trans->hw_id;
Wey-Yi Guy0ba958e2011-12-10 11:33:52 -0800245
Wey-Yi Guy73356132011-11-10 06:55:11 -0800246 iwl_leds_init(priv);
247
248 ret = ieee80211_register_hw(priv->hw);
249 if (ret) {
250 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
251 return ret;
252 }
253 priv->mac80211_registered = 1;
254
255 return 0;
256}
257
Don Fry09af1402011-12-09 10:07:38 -0800258void iwlagn_mac_unregister(struct iwl_priv *priv)
259{
260 if (!priv->mac80211_registered)
261 return;
262 iwl_leds_exit(priv);
263 ieee80211_unregister_hw(priv->hw);
264 priv->mac80211_registered = 0;
265}
266
Wey-Yi Guy73356132011-11-10 06:55:11 -0800267static int __iwl_up(struct iwl_priv *priv)
268{
269 struct iwl_rxon_context *ctx;
270 int ret;
271
Johannes Bergb1eea292012-03-06 13:30:42 -0800272 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800273
Don Fry83626402012-03-07 09:52:37 -0800274 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800275 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
276 return -EIO;
277 }
278
279 for_each_context(priv, ctx) {
280 ret = iwlagn_alloc_bcast_station(priv, ctx);
281 if (ret) {
282 iwl_dealloc_bcast_stations(priv);
283 return ret;
284 }
285 }
286
Johannes Berge1991882012-03-06 13:30:36 -0800287 ret = iwl_run_init_ucode(priv);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800288 if (ret) {
289 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
290 goto error;
291 }
292
Johannes Berge1991882012-03-06 13:30:36 -0800293 ret = iwl_load_ucode_wait_alive(priv, IWL_UCODE_REGULAR);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800294 if (ret) {
295 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
296 goto error;
297 }
298
299 ret = iwl_alive_start(priv);
300 if (ret)
301 goto error;
302 return 0;
303
304 error:
Don Fry83626402012-03-07 09:52:37 -0800305 set_bit(STATUS_EXIT_PENDING, &priv->status);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800306 iwl_down(priv);
Don Fry83626402012-03-07 09:52:37 -0800307 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800308
309 IWL_ERR(priv, "Unable to initialize device.\n");
310 return ret;
311}
312
313static int iwlagn_mac_start(struct ieee80211_hw *hw)
314{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200315 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800316 int ret;
317
318 IWL_DEBUG_MAC80211(priv, "enter\n");
319
320 /* we should be verifying the device is ready to be opened */
Johannes Bergb1eea292012-03-06 13:30:42 -0800321 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800322 ret = __iwl_up(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -0800323 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800324 if (ret)
325 return ret;
326
327 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
328
329 /* Now we should be done, and the READY bit should be set. */
Don Fry83626402012-03-07 09:52:37 -0800330 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800331 ret = -EIO;
332
333 iwlagn_led_enable(priv);
334
335 priv->is_open = 1;
336 IWL_DEBUG_MAC80211(priv, "leave\n");
337 return 0;
338}
339
David Spinadel50c1e9a2012-04-16 14:43:30 -0700340void iwlagn_mac_stop(struct ieee80211_hw *hw)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800341{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200342 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800343
344 IWL_DEBUG_MAC80211(priv, "enter\n");
345
346 if (!priv->is_open)
347 return;
348
349 priv->is_open = 0;
350
Johannes Bergb1eea292012-03-06 13:30:42 -0800351 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800352 iwl_down(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -0800353 mutex_unlock(&priv->mutex);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800354
355 iwl_cancel_deferred_work(priv);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800356
Johannes Berg1ee158d2012-02-17 10:07:44 -0800357 flush_workqueue(priv->workqueue);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800358
359 /* User space software may expect getting rfkill changes
Emmanuel Grumbach1df06bd2012-01-09 16:35:08 +0200360 * even if interface is down, trans->down will leave the RF
361 * kill interrupt enabled
362 */
Emmanuel Grumbach218733c2012-03-31 08:28:38 -0700363 iwl_trans_stop_hw(priv->trans, false);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800364
365 IWL_DEBUG_MAC80211(priv, "leave\n");
366}
367
David Spinadel50c1e9a2012-04-16 14:43:30 -0700368void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
369 struct ieee80211_vif *vif,
370 struct cfg80211_gtk_rekey_data *data)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800371{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200372 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800373
Johannes Berg65de7e82012-04-17 07:36:30 -0700374 if (iwlwifi_mod_params.sw_crypto)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800375 return;
376
377 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800378 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800379
380 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
381 goto out;
382
383 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
384 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
385 priv->replay_ctr =
386 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
387 priv->have_rekey_data = true;
388
389 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800390 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800391 IWL_DEBUG_MAC80211(priv, "leave\n");
392}
393
394#ifdef CONFIG_PM_SLEEP
Wey-Yi Guy73356132011-11-10 06:55:11 -0800395
David Spinadel50c1e9a2012-04-16 14:43:30 -0700396int iwlagn_mac_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800397{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200398 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800399 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Wey-Yi Guy023ca582011-11-10 06:55:17 -0800400 int ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800401
402 if (WARN_ON(!wowlan))
403 return -EINVAL;
404
405 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800406 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800407
408 /* Don't attempt WoWLAN when not associated, tear down instead. */
409 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
410 !iwl_is_associated_ctx(ctx)) {
411 ret = 1;
412 goto out;
413 }
414
Johannes Bergea886a62012-03-07 09:52:15 -0800415 ret = iwlagn_suspend(priv, wowlan);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800416 if (ret)
417 goto error;
418
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700419 device_set_wakeup_enable(priv->trans->dev, true);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800420
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700421 iwl_trans_wowlan_suspend(priv->trans);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800422
423 goto out;
424
425 error:
Johannes Berg15b86bf2012-03-05 11:24:36 -0800426 priv->wowlan = false;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800427 iwlagn_prepare_restart(priv);
428 ieee80211_restart_hw(priv->hw);
429 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800430 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800431 IWL_DEBUG_MAC80211(priv, "leave\n");
432
433 return ret;
434}
435
436static int iwlagn_mac_resume(struct ieee80211_hw *hw)
437{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200438 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800439 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
440 struct ieee80211_vif *vif;
441 unsigned long flags;
442 u32 base, status = 0xffffffff;
443 int ret = -EIO;
444
445 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800446 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800447
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700448 iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
Wey-Yi Guy73356132011-11-10 06:55:11 -0800449 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
450
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -0700451 base = priv->device_pointers.error_event_table;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800452 if (iwlagn_hw_valid_rtc_data_addr(base)) {
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700453 spin_lock_irqsave(&priv->trans->reg_lock, flags);
454 ret = iwl_grab_nic_access_silent(priv->trans);
Stanislaw Gruszkabfe4b802012-03-07 09:52:24 -0800455 if (likely(ret == 0)) {
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700456 iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, base);
457 status = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
458 iwl_release_nic_access(priv->trans);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800459 }
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700460 spin_unlock_irqrestore(&priv->trans->reg_lock, flags);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800461
462#ifdef CONFIG_IWLWIFI_DEBUGFS
463 if (ret == 0) {
Oliver Hartkoppa855f7e2012-03-25 08:43:24 +0200464 const struct fw_img *img;
465
David Spinadel6dfa8d02012-03-10 13:00:14 -0800466 img = &(priv->fw->img[IWL_UCODE_WOWLAN]);
467 if (!priv->wowlan_sram) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800468 priv->wowlan_sram =
David Spinadel6dfa8d02012-03-10 13:00:14 -0800469 kzalloc(img->sec[IWL_UCODE_SECTION_DATA].len,
Wey-Yi Guy73356132011-11-10 06:55:11 -0800470 GFP_KERNEL);
David Spinadel6dfa8d02012-03-10 13:00:14 -0800471 }
Wey-Yi Guy73356132011-11-10 06:55:11 -0800472
473 if (priv->wowlan_sram)
474 _iwl_read_targ_mem_words(
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700475 priv->trans, 0x800000,
David Spinadel6dfa8d02012-03-10 13:00:14 -0800476 priv->wowlan_sram,
477 img->sec[IWL_UCODE_SECTION_DATA].len / 4);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800478 }
479#endif
480 }
481
482 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
483 vif = ctx->vif;
484
Johannes Berg15b86bf2012-03-05 11:24:36 -0800485 priv->wowlan = false;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800486
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700487 device_set_wakeup_enable(priv->trans->dev, false);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800488
489 iwlagn_prepare_restart(priv);
490
491 memset((void *)&ctx->active, 0, sizeof(ctx->active));
492 iwl_connection_init_rx_config(priv, ctx);
493 iwlagn_set_rxon_chain(priv, ctx);
494
Johannes Bergb1eea292012-03-06 13:30:42 -0800495 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800496 IWL_DEBUG_MAC80211(priv, "leave\n");
497
498 ieee80211_resume_disconnect(vif);
499
500 return 1;
501}
502
503#endif
504
David Spinadel50c1e9a2012-04-16 14:43:30 -0700505void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800506{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200507 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800508
Wey-Yi Guy73356132011-11-10 06:55:11 -0800509 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
510 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
511
512 if (iwlagn_tx_skb(priv, skb))
513 dev_kfree_skb_any(skb);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800514}
515
David Spinadel50c1e9a2012-04-16 14:43:30 -0700516void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
517 struct ieee80211_vif *vif,
518 struct ieee80211_key_conf *keyconf,
519 struct ieee80211_sta *sta,
520 u32 iv32, u16 *phase1key)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800521{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200522 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800523
524 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
525}
526
David Spinadel50c1e9a2012-04-16 14:43:30 -0700527int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
528 struct ieee80211_vif *vif,
529 struct ieee80211_sta *sta,
530 struct ieee80211_key_conf *key)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800531{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200532 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800533 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
534 struct iwl_rxon_context *ctx = vif_priv->ctx;
535 int ret;
536 bool is_default_wep_key = false;
537
538 IWL_DEBUG_MAC80211(priv, "enter\n");
539
Johannes Berg65de7e82012-04-17 07:36:30 -0700540 if (iwlwifi_mod_params.sw_crypto) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800541 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
542 return -EOPNOTSUPP;
543 }
544
Johannes Berga7e12c82011-11-25 03:20:09 -0800545 switch (key->cipher) {
546 case WLAN_CIPHER_SUITE_TKIP:
547 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
548 /* fall through */
549 case WLAN_CIPHER_SUITE_CCMP:
550 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
551 break;
552 default:
553 break;
554 }
555
Wey-Yi Guy73356132011-11-10 06:55:11 -0800556 /*
557 * We could program these keys into the hardware as well, but we
558 * don't expect much multicast traffic in IBSS and having keys
559 * for more stations is probably more useful.
560 *
561 * Mark key TX-only and return 0.
562 */
563 if (vif->type == NL80211_IFTYPE_ADHOC &&
564 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
565 key->hw_key_idx = WEP_INVALID_OFFSET;
566 return 0;
567 }
568
569 /* If they key was TX-only, accept deletion */
570 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
571 return 0;
572
Johannes Bergb1eea292012-03-06 13:30:42 -0800573 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800574 iwl_scan_cancel_timeout(priv, 100);
575
576 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
577
578 /*
579 * If we are getting WEP group key and we didn't receive any key mapping
580 * so far, we are in legacy wep mode (group key only), otherwise we are
581 * in 1X mode.
582 * In legacy wep mode, we use another host command to the uCode.
583 */
584 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
585 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
586 if (cmd == SET_KEY)
587 is_default_wep_key = !ctx->key_mapping_keys;
588 else
589 is_default_wep_key =
590 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
591 }
592
593
594 switch (cmd) {
595 case SET_KEY:
596 if (is_default_wep_key) {
597 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
598 break;
599 }
600 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
601 if (ret) {
602 /*
603 * can't add key for RX, but we don't need it
604 * in the device for TX so still return 0
605 */
606 ret = 0;
607 key->hw_key_idx = WEP_INVALID_OFFSET;
608 }
609
610 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
611 break;
612 case DISABLE_KEY:
613 if (is_default_wep_key)
614 ret = iwl_remove_default_wep_key(priv, ctx, key);
615 else
616 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
617
618 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
619 break;
620 default:
621 ret = -EINVAL;
622 }
623
Johannes Bergb1eea292012-03-06 13:30:42 -0800624 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800625 IWL_DEBUG_MAC80211(priv, "leave\n");
626
627 return ret;
628}
629
David Spinadel50c1e9a2012-04-16 14:43:30 -0700630int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
631 struct ieee80211_vif *vif,
632 enum ieee80211_ampdu_mlme_action action,
633 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
634 u8 buf_size)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800635{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200636 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800637 int ret = -EINVAL;
638 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800639
640 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
641 sta->addr, tid);
642
Johannes Berg9e295112012-04-09 17:46:55 -0700643 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800644 return -EACCES;
645
646 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -0800647 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800648
649 switch (action) {
650 case IEEE80211_AMPDU_RX_START:
Johannes Berg65de7e82012-04-17 07:36:30 -0700651 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
Johannes Berg74289942011-12-13 00:07:40 -0800652 break;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800653 IWL_DEBUG_HT(priv, "start Rx\n");
654 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
655 break;
656 case IEEE80211_AMPDU_RX_STOP:
657 IWL_DEBUG_HT(priv, "stop Rx\n");
658 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800659 break;
660 case IEEE80211_AMPDU_TX_START:
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -0700661 if (!priv->trans->ops->tx_agg_setup)
Johannes Berg9eae88f2012-03-15 13:26:52 -0700662 break;
Johannes Berg65de7e82012-04-17 07:36:30 -0700663 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
Johannes Berg74289942011-12-13 00:07:40 -0800664 break;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800665 IWL_DEBUG_HT(priv, "start Tx\n");
666 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
667 break;
668 case IEEE80211_AMPDU_TX_STOP:
669 IWL_DEBUG_HT(priv, "stop Tx\n");
670 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
671 if ((ret == 0) && (priv->agg_tids_count > 0)) {
672 priv->agg_tids_count--;
673 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
674 priv->agg_tids_count);
675 }
Johannes Bergb9ad70d2012-03-06 13:30:55 -0800676 if (!priv->agg_tids_count &&
Johannes Berg9e295112012-04-09 17:46:55 -0700677 priv->hw_params.use_rts_for_aggregation) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800678 /*
679 * switch off RTS/CTS if it was previously enabled
680 */
681 sta_priv->lq_sta.lq.general_params.flags &=
682 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
683 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
684 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
685 }
686 break;
687 case IEEE80211_AMPDU_TX_OPERATIONAL:
Emmanuel Grumbach822e8b22011-11-21 13:25:31 +0200688 ret = iwlagn_tx_agg_oper(priv, vif, sta, tid, buf_size);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800689 break;
690 }
Johannes Bergb1eea292012-03-06 13:30:42 -0800691 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800692 IWL_DEBUG_MAC80211(priv, "leave\n");
693 return ret;
694}
695
696static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
697 struct ieee80211_vif *vif,
698 struct ieee80211_sta *sta)
699{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200700 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800701 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
702 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
703 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800704 int ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800705 u8 sta_id;
706
Wey-Yi Guy73356132011-11-10 06:55:11 -0800707 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
708 sta->addr);
709 sta_priv->sta_id = IWL_INVALID_STATION;
710
711 atomic_set(&sta_priv->pending_frames, 0);
712 if (vif->type == NL80211_IFTYPE_AP)
713 sta_priv->client = true;
714
715 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
716 is_ap, sta, &sta_id);
717 if (ret) {
718 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
719 sta->addr, ret);
720 /* Should we return success if return code is EEXIST ? */
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800721 return ret;
Wey-Yi Guy73356132011-11-10 06:55:11 -0800722 }
723
724 sta_priv->sta_id = sta_id;
725
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800726 return 0;
727}
728
729static int iwlagn_mac_sta_remove(struct ieee80211_hw *hw,
730 struct ieee80211_vif *vif,
731 struct ieee80211_sta *sta)
732{
733 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
734 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
735 int ret;
736
Johannes Berg97420512012-03-07 09:52:42 -0800737 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", sta->addr);
738
739 if (vif->type == NL80211_IFTYPE_STATION) {
740 /*
741 * Station will be removed from device when the RXON
742 * is set to unassociated -- just deactivate it here
743 * to avoid re-programming it.
744 */
745 ret = 0;
746 iwl_deactivate_station(priv, sta_priv->sta_id, sta->addr);
747 } else {
748 ret = iwl_remove_station(priv, sta_priv->sta_id, sta->addr);
749 if (ret)
750 IWL_DEBUG_QUIET_RFKILL(priv,
751 "Error removing station %pM\n", sta->addr);
752 }
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800753 return ret;
754}
755
David Spinadel50c1e9a2012-04-16 14:43:30 -0700756int iwlagn_mac_sta_state(struct ieee80211_hw *hw,
757 struct ieee80211_vif *vif,
758 struct ieee80211_sta *sta,
759 enum ieee80211_sta_state old_state,
760 enum ieee80211_sta_state new_state)
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800761{
762 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800763 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800764 enum {
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800765 NONE, ADD, REMOVE, HT_RATE_INIT, ADD_RATE_INIT,
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800766 } op = NONE;
767 int ret;
768
769 IWL_DEBUG_MAC80211(priv, "station %pM state change %d->%d\n",
770 sta->addr, old_state, new_state);
771
Johannes Bergb1eea292012-03-06 13:30:42 -0800772 mutex_lock(&priv->mutex);
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800773 if (vif->type == NL80211_IFTYPE_STATION) {
774 if (old_state == IEEE80211_STA_NOTEXIST &&
775 new_state == IEEE80211_STA_NONE)
776 op = ADD;
777 else if (old_state == IEEE80211_STA_NONE &&
778 new_state == IEEE80211_STA_NOTEXIST)
779 op = REMOVE;
780 else if (old_state == IEEE80211_STA_AUTH &&
781 new_state == IEEE80211_STA_ASSOC)
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800782 op = HT_RATE_INIT;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800783 } else {
784 if (old_state == IEEE80211_STA_AUTH &&
785 new_state == IEEE80211_STA_ASSOC)
786 op = ADD_RATE_INIT;
787 else if (old_state == IEEE80211_STA_ASSOC &&
788 new_state == IEEE80211_STA_AUTH)
789 op = REMOVE;
790 }
791
792 switch (op) {
793 case ADD:
794 ret = iwlagn_mac_sta_add(hw, vif, sta);
795 break;
796 case REMOVE:
797 ret = iwlagn_mac_sta_remove(hw, vif, sta);
798 break;
799 case ADD_RATE_INIT:
800 ret = iwlagn_mac_sta_add(hw, vif, sta);
801 if (ret)
802 break;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800803 /* Initialize rate scaling */
804 IWL_DEBUG_INFO(priv,
805 "Initializing rate scaling for station %pM\n",
806 sta->addr);
807 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
808 ret = 0;
809 break;
Johannes Bergab0bd5b2012-03-05 11:24:47 -0800810 case HT_RATE_INIT:
811 /* Initialize rate scaling */
812 ret = iwl_sta_update_ht(priv, vif_priv->ctx, sta);
813 if (ret)
814 break;
815 IWL_DEBUG_INFO(priv,
816 "Initializing rate scaling for station %pM\n",
817 sta->addr);
818 iwl_rs_rate_init(priv, sta, iwl_sta_id(sta));
819 ret = 0;
820 break;
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800821 default:
822 ret = 0;
823 break;
824 }
825
826 /*
827 * mac80211 might WARN if we fail, but due the way we
828 * (badly) handle hard rfkill, we might fail here
829 */
Don Fry83626402012-03-07 09:52:37 -0800830 if (iwl_is_rfkill(priv))
Johannes Bergfb5fe5b2012-03-05 11:24:29 -0800831 ret = 0;
832
Johannes Bergb1eea292012-03-06 13:30:42 -0800833 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800834 IWL_DEBUG_MAC80211(priv, "leave\n");
835
836 return ret;
837}
838
David Spinadel50c1e9a2012-04-16 14:43:30 -0700839void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
840 struct ieee80211_channel_switch *ch_switch)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800841{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200842 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800843 const struct iwl_channel_info *ch_info;
844 struct ieee80211_conf *conf = &hw->conf;
845 struct ieee80211_channel *channel = ch_switch->channel;
846 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
847 /*
848 * MULTI-FIXME
849 * When we add support for multiple interfaces, we need to
850 * revisit this. The channel switch command in the device
851 * only affects the BSS context, but what does that really
852 * mean? And what if we get a CSA on the second interface?
853 * This needs a lot of work.
854 */
855 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
856 u16 ch;
857
858 IWL_DEBUG_MAC80211(priv, "enter\n");
859
Johannes Bergb1eea292012-03-06 13:30:42 -0800860 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800861
Don Fry83626402012-03-07 09:52:37 -0800862 if (iwl_is_rfkill(priv))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800863 goto out;
864
Don Fry83626402012-03-07 09:52:37 -0800865 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
866 test_bit(STATUS_SCANNING, &priv->status) ||
867 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
Wey-Yi Guy73356132011-11-10 06:55:11 -0800868 goto out;
869
870 if (!iwl_is_associated_ctx(ctx))
871 goto out;
872
Johannes Berge9676692012-04-10 14:10:28 -0700873 if (!priv->lib->set_channel_switch)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800874 goto out;
875
876 ch = channel->hw_value;
877 if (le16_to_cpu(ctx->active.channel) == ch)
878 goto out;
879
880 ch_info = iwl_get_channel_info(priv, channel->band, ch);
881 if (!is_channel_valid(ch_info)) {
882 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
883 goto out;
884 }
885
Wey-Yi Guy73356132011-11-10 06:55:11 -0800886 priv->current_ht_config.smps = conf->smps_mode;
887
888 /* Configure HT40 channels */
889 ctx->ht.enabled = conf_is_ht(conf);
Wey-Yi Guy137ce792011-11-22 16:23:35 -0800890 if (ctx->ht.enabled)
891 iwlagn_config_ht40(conf, ctx);
892 else
Wey-Yi Guy73356132011-11-10 06:55:11 -0800893 ctx->ht.is_40mhz = false;
894
895 if ((le16_to_cpu(ctx->staging.channel) != ch))
896 ctx->staging.flags = 0;
897
898 iwl_set_rxon_channel(priv, channel, ctx);
899 iwl_set_rxon_ht(priv, ht_conf);
900 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
901
Wey-Yi Guy73356132011-11-10 06:55:11 -0800902 /*
903 * at this point, staging_rxon has the
904 * configuration for channel switch
905 */
Don Fry83626402012-03-07 09:52:37 -0800906 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800907 priv->switch_channel = cpu_to_le16(ch);
Johannes Berge9676692012-04-10 14:10:28 -0700908 if (priv->lib->set_channel_switch(priv, ch_switch)) {
Don Fry83626402012-03-07 09:52:37 -0800909 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800910 priv->switch_channel = 0;
911 ieee80211_chswitch_done(ctx->vif, false);
912 }
913
914out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800915 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800916 IWL_DEBUG_MAC80211(priv, "leave\n");
917}
918
Meenakshi Venkataramanbedec3a2012-03-13 17:47:23 -0700919void iwl_chswitch_done(struct iwl_priv *priv, bool is_success)
920{
921 /*
922 * MULTI-FIXME
923 * See iwlagn_mac_channel_switch.
924 */
925 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
926
927 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
928 return;
929
930 if (test_and_clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
931 ieee80211_chswitch_done(ctx->vif, is_success);
932}
933
David Spinadel50c1e9a2012-04-16 14:43:30 -0700934void iwlagn_configure_filter(struct ieee80211_hw *hw,
935 unsigned int changed_flags,
936 unsigned int *total_flags,
937 u64 multicast)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800938{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200939 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800940 __le32 filter_or = 0, filter_nand = 0;
941 struct iwl_rxon_context *ctx;
942
943#define CHK(test, flag) do { \
944 if (*total_flags & (test)) \
945 filter_or |= (flag); \
946 else \
947 filter_nand |= (flag); \
948 } while (0)
949
950 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
951 changed_flags, *total_flags);
952
953 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
954 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
955 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
956 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
957
958#undef CHK
959
Johannes Bergb1eea292012-03-06 13:30:42 -0800960 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800961
962 for_each_context(priv, ctx) {
963 ctx->staging.filter_flags &= ~filter_nand;
964 ctx->staging.filter_flags |= filter_or;
965
966 /*
967 * Not committing directly because hardware can perform a scan,
968 * but we'll eventually commit the filter flags change anyway.
969 */
970 }
971
Johannes Bergb1eea292012-03-06 13:30:42 -0800972 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800973
974 /*
975 * Receiving all multicast frames is always enabled by the
976 * default flags setup in iwl_connection_init_rx_config()
977 * since we currently do not support programming multicast
978 * filters into the device.
979 */
980 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
981 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
982}
983
David Spinadel50c1e9a2012-04-16 14:43:30 -0700984void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
Wey-Yi Guy73356132011-11-10 06:55:11 -0800985{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +0200986 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800987
Johannes Bergb1eea292012-03-06 13:30:42 -0800988 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -0800989 IWL_DEBUG_MAC80211(priv, "enter\n");
990
Don Fry83626402012-03-07 09:52:37 -0800991 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800992 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
993 goto done;
994 }
Don Fry83626402012-03-07 09:52:37 -0800995 if (iwl_is_rfkill(priv)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -0800996 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
997 goto done;
998 }
999
1000 /*
1001 * mac80211 will not push any more frames for transmit
1002 * until the flush is completed
1003 */
1004 if (drop) {
1005 IWL_DEBUG_MAC80211(priv, "send flush command\n");
1006 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
1007 IWL_ERR(priv, "flush request fail\n");
1008 goto done;
1009 }
1010 }
1011 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
Emmanuel Grumbach68e8dfd2012-04-18 07:28:17 -07001012 iwl_trans_wait_tx_queue_empty(priv->trans);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001013done:
Johannes Bergb1eea292012-03-06 13:30:42 -08001014 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001015 IWL_DEBUG_MAC80211(priv, "leave\n");
1016}
1017
1018static int iwlagn_mac_remain_on_channel(struct ieee80211_hw *hw,
1019 struct ieee80211_channel *channel,
1020 enum nl80211_channel_type channel_type,
1021 int duration)
1022{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001023 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001024 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1025 int err = 0;
1026
Johannes Berga18f61b2012-03-15 13:26:53 -07001027 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
Wey-Yi Guy73356132011-11-10 06:55:11 -08001028 return -EOPNOTSUPP;
1029
1030 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
1031 return -EOPNOTSUPP;
1032
1033 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001034 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001035
Don Fry83626402012-03-07 09:52:37 -08001036 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
Wey-Yi Guy73356132011-11-10 06:55:11 -08001037 err = -EBUSY;
1038 goto out;
1039 }
1040
1041 priv->hw_roc_channel = channel;
1042 priv->hw_roc_chantype = channel_type;
Johannes Berg3ddf6be2011-11-10 06:55:21 -08001043 /* convert from ms to TU */
1044 priv->hw_roc_duration = DIV_ROUND_UP(1000 * duration, 1024);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001045 priv->hw_roc_start_notified = false;
1046 cancel_delayed_work(&priv->hw_roc_disable_work);
1047
1048 if (!ctx->is_active) {
Johannes Berga69cd042011-11-10 06:55:13 -08001049 static const struct iwl_qos_info default_qos_data = {
1050 .def_qos_parm = {
1051 .ac[0] = {
1052 .cw_min = cpu_to_le16(3),
1053 .cw_max = cpu_to_le16(7),
1054 .aifsn = 2,
1055 .edca_txop = cpu_to_le16(1504),
1056 },
1057 .ac[1] = {
1058 .cw_min = cpu_to_le16(7),
1059 .cw_max = cpu_to_le16(15),
1060 .aifsn = 2,
1061 .edca_txop = cpu_to_le16(3008),
1062 },
1063 .ac[2] = {
1064 .cw_min = cpu_to_le16(15),
1065 .cw_max = cpu_to_le16(1023),
1066 .aifsn = 3,
1067 },
1068 .ac[3] = {
1069 .cw_min = cpu_to_le16(15),
1070 .cw_max = cpu_to_le16(1023),
1071 .aifsn = 7,
1072 },
1073 },
1074 };
1075
Wey-Yi Guy73356132011-11-10 06:55:11 -08001076 ctx->is_active = true;
Johannes Berga69cd042011-11-10 06:55:13 -08001077 ctx->qos_data = default_qos_data;
Wey-Yi Guy73356132011-11-10 06:55:11 -08001078 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1079 memcpy(ctx->staging.node_addr,
1080 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1081 ETH_ALEN);
1082 memcpy(ctx->staging.bssid_addr,
1083 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
1084 ETH_ALEN);
1085 err = iwlagn_commit_rxon(priv, ctx);
1086 if (err)
1087 goto out;
1088 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
1089 RXON_FILTER_PROMISC_MSK |
1090 RXON_FILTER_CTL2HOST_MSK;
1091
1092 err = iwlagn_commit_rxon(priv, ctx);
1093 if (err) {
1094 iwlagn_disable_roc(priv);
1095 goto out;
1096 }
1097 priv->hw_roc_setup = true;
1098 }
1099
1100 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
1101 if (err)
1102 iwlagn_disable_roc(priv);
1103
1104 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001105 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001106 IWL_DEBUG_MAC80211(priv, "leave\n");
1107
1108 return err;
1109}
1110
David Spinadel50c1e9a2012-04-16 14:43:30 -07001111int iwlagn_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001112{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001113 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001114
Johannes Berga18f61b2012-03-15 13:26:53 -07001115 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
Wey-Yi Guy73356132011-11-10 06:55:11 -08001116 return -EOPNOTSUPP;
1117
1118 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001119 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001120 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
1121 iwlagn_disable_roc(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001122 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001123 IWL_DEBUG_MAC80211(priv, "leave\n");
1124
1125 return 0;
1126}
1127
David Spinadel50c1e9a2012-04-16 14:43:30 -07001128void iwlagn_mac_rssi_callback(struct ieee80211_hw *hw,
1129 enum ieee80211_rssi_event rssi_event)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001130{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001131 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001132
1133 IWL_DEBUG_MAC80211(priv, "enter\n");
Johannes Bergb1eea292012-03-06 13:30:42 -08001134 mutex_lock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001135
Emmanuel Grumbach21522682012-03-22 17:51:44 +02001136 if (priv->cfg->bt_params &&
1137 priv->cfg->bt_params->advanced_bt_coexist) {
Wey-Yi Guy73356132011-11-10 06:55:11 -08001138 if (rssi_event == RSSI_EVENT_LOW)
1139 priv->bt_enable_pspoll = true;
1140 else if (rssi_event == RSSI_EVENT_HIGH)
1141 priv->bt_enable_pspoll = false;
1142
1143 iwlagn_send_advance_bt_config(priv);
1144 } else {
1145 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
1146 "ignoring RSSI callback\n");
1147 }
1148
Johannes Bergb1eea292012-03-06 13:30:42 -08001149 mutex_unlock(&priv->mutex);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001150 IWL_DEBUG_MAC80211(priv, "leave\n");
1151}
1152
David Spinadel50c1e9a2012-04-16 14:43:30 -07001153int iwlagn_mac_set_tim(struct ieee80211_hw *hw,
1154 struct ieee80211_sta *sta, bool set)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001155{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001156 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001157
Johannes Berg1ee158d2012-02-17 10:07:44 -08001158 queue_work(priv->workqueue, &priv->beacon_update);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001159
1160 return 0;
1161}
1162
David Spinadel50c1e9a2012-04-16 14:43:30 -07001163int iwlagn_mac_conf_tx(struct ieee80211_hw *hw,
1164 struct ieee80211_vif *vif, u16 queue,
1165 const struct ieee80211_tx_queue_params *params)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001166{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001167 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001168 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1169 struct iwl_rxon_context *ctx = vif_priv->ctx;
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001170 int q;
1171
1172 if (WARN_ON(!ctx))
1173 return -EINVAL;
1174
1175 IWL_DEBUG_MAC80211(priv, "enter\n");
1176
Don Fry83626402012-03-07 09:52:37 -08001177 if (!iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001178 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
1179 return -EIO;
1180 }
1181
1182 if (queue >= AC_NUM) {
1183 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
1184 return 0;
1185 }
1186
1187 q = AC_NUM - 1 - queue;
1188
Johannes Bergb1eea292012-03-06 13:30:42 -08001189 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001190
1191 ctx->qos_data.def_qos_parm.ac[q].cw_min =
1192 cpu_to_le16(params->cw_min);
1193 ctx->qos_data.def_qos_parm.ac[q].cw_max =
1194 cpu_to_le16(params->cw_max);
1195 ctx->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
1196 ctx->qos_data.def_qos_parm.ac[q].edca_txop =
1197 cpu_to_le16((params->txop * 32));
1198
1199 ctx->qos_data.def_qos_parm.ac[q].reserved1 = 0;
1200
Johannes Bergb1eea292012-03-06 13:30:42 -08001201 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001202
1203 IWL_DEBUG_MAC80211(priv, "leave\n");
1204 return 0;
1205}
1206
David Spinadel50c1e9a2012-04-16 14:43:30 -07001207int iwlagn_mac_tx_last_beacon(struct ieee80211_hw *hw)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001208{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001209 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001210
1211 return priv->ibss_manager == IWL_IBSS_MANAGER;
1212}
1213
1214static int iwl_set_mode(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1215{
1216 iwl_connection_init_rx_config(priv, ctx);
1217
1218 iwlagn_set_rxon_chain(priv, ctx);
1219
1220 return iwlagn_commit_rxon(priv, ctx);
1221}
1222
David Spinadel50c1e9a2012-04-16 14:43:30 -07001223int iwl_setup_interface(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001224{
1225 struct ieee80211_vif *vif = ctx->vif;
Johannes Berg14791772012-04-17 07:39:03 -07001226 int err, ac;
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001227
Johannes Bergb1eea292012-03-06 13:30:42 -08001228 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001229
1230 /*
1231 * This variable will be correct only when there's just
1232 * a single context, but all code using it is for hardware
1233 * that supports only one context.
1234 */
1235 priv->iw_mode = vif->type;
1236
1237 ctx->is_active = true;
1238
1239 err = iwl_set_mode(priv, ctx);
1240 if (err) {
1241 if (!ctx->always_active)
1242 ctx->is_active = false;
1243 return err;
1244 }
1245
Emmanuel Grumbach21522682012-03-22 17:51:44 +02001246 if (priv->cfg->bt_params && priv->cfg->bt_params->advanced_bt_coexist &&
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001247 vif->type == NL80211_IFTYPE_ADHOC) {
1248 /*
1249 * pretend to have high BT traffic as long as we
1250 * are operating in IBSS mode, as this will cause
1251 * the rate scaling etc. to behave as intended.
1252 */
1253 priv->bt_traffic_load = IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1254 }
1255
Johannes Berg14791772012-04-17 07:39:03 -07001256 /* set up queue mappings */
1257 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1258 vif->hw_queue[ac] = ctx->ac_to_queue[ac];
1259
1260 if (vif->type == NL80211_IFTYPE_AP)
1261 vif->cab_queue = ctx->mcast_queue;
1262 else
1263 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
1264
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001265 return 0;
1266}
1267
1268static int iwlagn_mac_add_interface(struct ieee80211_hw *hw,
Johannes Berg14791772012-04-17 07:39:03 -07001269 struct ieee80211_vif *vif)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001270{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001271 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001272 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1273 struct iwl_rxon_context *tmp, *ctx = NULL;
1274 int err;
1275 enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif);
Stanislaw Gruszka8db4c7e2012-04-18 08:01:15 -07001276 bool reset = false;
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001277
1278 IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n",
1279 viftype, vif->addr);
1280
1281 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1282
Johannes Bergb1eea292012-03-06 13:30:42 -08001283 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001284
1285 iwlagn_disable_roc(priv);
1286
Don Fry83626402012-03-07 09:52:37 -08001287 if (!iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001288 IWL_WARN(priv, "Try to add interface when device not ready\n");
1289 err = -EINVAL;
1290 goto out;
1291 }
1292
1293 for_each_context(priv, tmp) {
1294 u32 possible_modes =
1295 tmp->interface_modes | tmp->exclusive_interface_modes;
1296
1297 if (tmp->vif) {
Stanislaw Gruszka8db4c7e2012-04-18 08:01:15 -07001298 /* On reset we need to add the same interface again */
1299 if (tmp->vif == vif) {
1300 reset = true;
1301 ctx = tmp;
1302 break;
1303 }
1304
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001305 /* check if this busy context is exclusive */
1306 if (tmp->exclusive_interface_modes &
1307 BIT(tmp->vif->type)) {
1308 err = -EINVAL;
1309 goto out;
1310 }
1311 continue;
1312 }
1313
1314 if (!(possible_modes & BIT(viftype)))
1315 continue;
1316
1317 /* have maybe usable context w/o interface */
1318 ctx = tmp;
1319 break;
1320 }
1321
1322 if (!ctx) {
1323 err = -EOPNOTSUPP;
1324 goto out;
1325 }
1326
1327 vif_priv->ctx = ctx;
1328 ctx->vif = vif;
1329
1330 err = iwl_setup_interface(priv, ctx);
Stanislaw Gruszka8db4c7e2012-04-18 08:01:15 -07001331 if (!err || reset)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001332 goto out;
1333
1334 ctx->vif = NULL;
1335 priv->iw_mode = NL80211_IFTYPE_STATION;
1336 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001337 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001338
1339 IWL_DEBUG_MAC80211(priv, "leave\n");
1340 return err;
1341}
1342
David Spinadel50c1e9a2012-04-16 14:43:30 -07001343void iwl_teardown_interface(struct iwl_priv *priv,
1344 struct ieee80211_vif *vif,
1345 bool mode_change)
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001346{
1347 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1348
Johannes Bergb1eea292012-03-06 13:30:42 -08001349 lockdep_assert_held(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001350
1351 if (priv->scan_vif == vif) {
1352 iwl_scan_cancel_timeout(priv, 200);
1353 iwl_force_scan_end(priv);
1354 }
1355
1356 if (!mode_change) {
1357 iwl_set_mode(priv, ctx);
1358 if (!ctx->always_active)
1359 ctx->is_active = false;
1360 }
1361
1362 /*
1363 * When removing the IBSS interface, overwrite the
1364 * BT traffic load with the stored one from the last
1365 * notification, if any. If this is a device that
1366 * doesn't implement this, this has no effect since
1367 * both values are the same and zero.
1368 */
1369 if (vif->type == NL80211_IFTYPE_ADHOC)
1370 priv->bt_traffic_load = priv->last_bt_traffic_load;
1371}
1372
1373static void iwlagn_mac_remove_interface(struct ieee80211_hw *hw,
1374 struct ieee80211_vif *vif)
1375{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001376 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001377 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1378
1379 IWL_DEBUG_MAC80211(priv, "enter\n");
1380
Johannes Bergb1eea292012-03-06 13:30:42 -08001381 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001382
1383 if (WARN_ON(ctx->vif != vif)) {
1384 struct iwl_rxon_context *tmp;
1385 IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
1386 for_each_context(priv, tmp)
1387 IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
1388 tmp->ctxid, tmp, tmp->vif);
1389 }
1390 ctx->vif = NULL;
1391
1392 iwl_teardown_interface(priv, vif, false);
1393
Johannes Bergb1eea292012-03-06 13:30:42 -08001394 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001395
1396 IWL_DEBUG_MAC80211(priv, "leave\n");
1397
1398}
1399
1400static int iwlagn_mac_change_interface(struct ieee80211_hw *hw,
1401 struct ieee80211_vif *vif,
1402 enum nl80211_iftype newtype, bool newp2p)
1403{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001404 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001405 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
1406 struct iwl_rxon_context *bss_ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1407 struct iwl_rxon_context *tmp;
1408 enum nl80211_iftype newviftype = newtype;
1409 u32 interface_modes;
1410 int err;
1411
1412 IWL_DEBUG_MAC80211(priv, "enter\n");
1413
1414 newtype = ieee80211_iftype_p2p(newtype, newp2p);
1415
Johannes Bergb1eea292012-03-06 13:30:42 -08001416 mutex_lock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001417
Don Fry83626402012-03-07 09:52:37 -08001418 if (!ctx->vif || !iwl_is_ready_rf(priv)) {
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001419 /*
1420 * Huh? But wait ... this can maybe happen when
1421 * we're in the middle of a firmware restart!
1422 */
1423 err = -EBUSY;
1424 goto out;
1425 }
1426
1427 interface_modes = ctx->interface_modes | ctx->exclusive_interface_modes;
1428
1429 if (!(interface_modes & BIT(newtype))) {
1430 err = -EBUSY;
1431 goto out;
1432 }
1433
1434 /*
1435 * Refuse a change that should be done by moving from the PAN
1436 * context to the BSS context instead, if the BSS context is
1437 * available and can support the new interface type.
1438 */
1439 if (ctx->ctxid == IWL_RXON_CTX_PAN && !bss_ctx->vif &&
1440 (bss_ctx->interface_modes & BIT(newtype) ||
1441 bss_ctx->exclusive_interface_modes & BIT(newtype))) {
1442 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1443 err = -EBUSY;
1444 goto out;
1445 }
1446
1447 if (ctx->exclusive_interface_modes & BIT(newtype)) {
1448 for_each_context(priv, tmp) {
1449 if (ctx == tmp)
1450 continue;
1451
1452 if (!tmp->vif)
1453 continue;
1454
1455 /*
1456 * The current mode switch would be exclusive, but
1457 * another context is active ... refuse the switch.
1458 */
1459 err = -EBUSY;
1460 goto out;
1461 }
1462 }
1463
1464 /* success */
1465 iwl_teardown_interface(priv, vif, true);
1466 vif->type = newviftype;
1467 vif->p2p = newp2p;
1468 err = iwl_setup_interface(priv, ctx);
1469 WARN_ON(err);
1470 /*
1471 * We've switched internally, but submitting to the
1472 * device may have failed for some reason. Mask this
1473 * error, because otherwise mac80211 will not switch
1474 * (and set the interface type back) and we'll be
1475 * out of sync with it.
1476 */
1477 err = 0;
1478
1479 out:
Johannes Bergb1eea292012-03-06 13:30:42 -08001480 mutex_unlock(&priv->mutex);
Wey-Yi Guy0b7a4c72011-11-10 06:55:14 -08001481 IWL_DEBUG_MAC80211(priv, "leave\n");
1482
1483 return err;
1484}
1485
David Spinadel50c1e9a2012-04-16 14:43:30 -07001486int iwlagn_mac_hw_scan(struct ieee80211_hw *hw,
1487 struct ieee80211_vif *vif,
1488 struct cfg80211_scan_request *req)
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001489{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001490 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001491 int ret;
1492
1493 IWL_DEBUG_MAC80211(priv, "enter\n");
1494
1495 if (req->n_channels == 0)
1496 return -EINVAL;
1497
Johannes Bergb1eea292012-03-06 13:30:42 -08001498 mutex_lock(&priv->mutex);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001499
1500 /*
1501 * If an internal scan is in progress, just set
1502 * up the scan_request as per above.
1503 */
1504 if (priv->scan_type != IWL_SCAN_NORMAL) {
1505 IWL_DEBUG_SCAN(priv,
1506 "SCAN request during internal scan - defer\n");
1507 priv->scan_request = req;
1508 priv->scan_vif = vif;
1509 ret = 0;
1510 } else {
1511 priv->scan_request = req;
1512 priv->scan_vif = vif;
1513 /*
1514 * mac80211 will only ask for one band at a time
1515 * so using channels[0] here is ok
1516 */
1517 ret = iwl_scan_initiate(priv, vif, IWL_SCAN_NORMAL,
1518 req->channels[0]->band);
1519 if (ret) {
1520 priv->scan_request = NULL;
1521 priv->scan_vif = NULL;
1522 }
1523 }
1524
1525 IWL_DEBUG_MAC80211(priv, "leave\n");
1526
Johannes Bergb1eea292012-03-06 13:30:42 -08001527 mutex_unlock(&priv->mutex);
Wey-Yi Guyba4c5312011-11-10 06:55:15 -08001528
1529 return ret;
1530}
1531
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001532static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1533{
Johannes Berg9451ca12012-03-05 11:24:23 -08001534 struct iwl_addsta_cmd cmd = {
1535 .mode = STA_CONTROL_MODIFY_MSK,
1536 .station_flags_msk = STA_FLG_PWR_SAVE_MSK,
1537 .sta.sta_id = sta_id,
1538 };
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001539
Johannes Berg9451ca12012-03-05 11:24:23 -08001540 iwl_send_add_sta(priv, &cmd, CMD_ASYNC);
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001541}
1542
David Spinadel50c1e9a2012-04-16 14:43:30 -07001543void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001544 struct ieee80211_vif *vif,
1545 enum sta_notify_cmd cmd,
1546 struct ieee80211_sta *sta)
1547{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001548 struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
Wey-Yi Guy76b29332011-11-10 06:55:16 -08001549 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
1550 int sta_id;
1551
1552 IWL_DEBUG_MAC80211(priv, "enter\n");
1553
1554 switch (cmd) {
1555 case STA_NOTIFY_SLEEP:
1556 WARN_ON(!sta_priv->client);
1557 sta_priv->asleep = true;
1558 if (atomic_read(&sta_priv->pending_frames) > 0)
1559 ieee80211_sta_block_awake(hw, sta, true);
1560 break;
1561 case STA_NOTIFY_AWAKE:
1562 WARN_ON(!sta_priv->client);
1563 if (!sta_priv->asleep)
1564 break;
1565 sta_priv->asleep = false;
1566 sta_id = iwl_sta_id(sta);
1567 if (sta_id != IWL_INVALID_STATION)
1568 iwl_sta_modify_ps_wake(priv, sta_id);
1569 break;
1570 default:
1571 break;
1572 }
1573 IWL_DEBUG_MAC80211(priv, "leave\n");
1574}
1575
Wey-Yi Guy73356132011-11-10 06:55:11 -08001576struct ieee80211_ops iwlagn_hw_ops = {
1577 .tx = iwlagn_mac_tx,
1578 .start = iwlagn_mac_start,
1579 .stop = iwlagn_mac_stop,
1580#ifdef CONFIG_PM_SLEEP
1581 .suspend = iwlagn_mac_suspend,
1582 .resume = iwlagn_mac_resume,
1583#endif
1584 .add_interface = iwlagn_mac_add_interface,
1585 .remove_interface = iwlagn_mac_remove_interface,
1586 .change_interface = iwlagn_mac_change_interface,
1587 .config = iwlagn_mac_config,
1588 .configure_filter = iwlagn_configure_filter,
1589 .set_key = iwlagn_mac_set_key,
1590 .update_tkip_key = iwlagn_mac_update_tkip_key,
1591 .set_rekey_data = iwlagn_mac_set_rekey_data,
1592 .conf_tx = iwlagn_mac_conf_tx,
1593 .bss_info_changed = iwlagn_bss_info_changed,
1594 .ampdu_action = iwlagn_mac_ampdu_action,
1595 .hw_scan = iwlagn_mac_hw_scan,
1596 .sta_notify = iwlagn_mac_sta_notify,
Johannes Bergfb5fe5b2012-03-05 11:24:29 -08001597 .sta_state = iwlagn_mac_sta_state,
Wey-Yi Guy73356132011-11-10 06:55:11 -08001598 .channel_switch = iwlagn_mac_channel_switch,
1599 .flush = iwlagn_mac_flush,
1600 .tx_last_beacon = iwlagn_mac_tx_last_beacon,
1601 .remain_on_channel = iwlagn_mac_remain_on_channel,
1602 .cancel_remain_on_channel = iwlagn_mac_cancel_remain_on_channel,
1603 .rssi_callback = iwlagn_mac_rssi_callback,
1604 CFG80211_TESTMODE_CMD(iwlagn_mac_testmode_cmd)
1605 CFG80211_TESTMODE_DUMP(iwlagn_mac_testmode_dump)
Wey-Yi Guy73356132011-11-10 06:55:11 -08001606 .set_tim = iwlagn_mac_set_tim,
1607};
1608
1609/* This function both allocates and initializes hw and priv. */
1610struct ieee80211_hw *iwl_alloc_all(void)
1611{
1612 struct iwl_priv *priv;
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001613 struct iwl_op_mode *op_mode;
Wey-Yi Guy73356132011-11-10 06:55:11 -08001614 /* mac80211 allocates memory for this device instance, including
1615 * space for this driver's private structure */
1616 struct ieee80211_hw *hw;
1617
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001618 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv) +
1619 sizeof(struct iwl_op_mode), &iwlagn_hw_ops);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001620 if (!hw)
1621 goto out;
1622
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001623 op_mode = hw->priv;
1624 priv = IWL_OP_MODE_GET_DVM(op_mode);
Wey-Yi Guy73356132011-11-10 06:55:11 -08001625 priv->hw = hw;
1626
1627out:
1628 return hw;
1629}