2 Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: rt2x00 generic device routines.
26 #include <linux/kernel.h>
27 #include <linux/module.h>
30 #include "rt2x00lib.h"
33 * Radio control handlers.
35 int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
40 * Don't enable the radio twice.
41 * And check if the hardware button has been disabled.
43 if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
47 * Initialize all data queues.
49 rt2x00queue_init_queues(rt2x00dev);
55 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON);
59 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON);
61 rt2x00leds_led_radio(rt2x00dev, true);
62 rt2x00led_led_activity(rt2x00dev, true);
64 set_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags);
69 rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
72 * Start the TX queues.
74 ieee80211_wake_queues(rt2x00dev->hw);
79 void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
81 if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
85 * Stop the TX queues in mac80211.
87 ieee80211_stop_queues(rt2x00dev->hw);
88 rt2x00queue_stop_queues(rt2x00dev);
93 rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
98 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF);
99 rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
100 rt2x00led_led_activity(rt2x00dev, false);
101 rt2x00leds_led_radio(rt2x00dev, false);
104 void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state)
107 * When we are disabling the RX, we should also stop the link tuner.
109 if (state == STATE_RADIO_RX_OFF)
110 rt2x00link_stop_tuner(rt2x00dev);
112 rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
115 * When we are enabling the RX, we should also start the link tuner.
117 if (state == STATE_RADIO_RX_ON)
118 rt2x00link_start_tuner(rt2x00dev);
121 static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
123 struct rt2x00_dev *rt2x00dev =
124 container_of(work, struct rt2x00_dev, filter_work);
126 rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter);
129 static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
130 struct ieee80211_vif *vif)
132 struct rt2x00_dev *rt2x00dev = data;
133 struct rt2x00_intf *intf = vif_to_intf(vif);
134 struct ieee80211_bss_conf conf;
138 * Copy all data we need during this action under the protection
139 * of a spinlock. Otherwise race conditions might occur which results
140 * into an invalid configuration.
142 spin_lock(&intf->lock);
144 memcpy(&conf, &vif->bss_conf, sizeof(conf));
145 delayed_flags = intf->delayed_flags;
146 intf->delayed_flags = 0;
148 spin_unlock(&intf->lock);
151 * It is possible the radio was disabled while the work had been
152 * scheduled. If that happens we should return here immediately,
153 * note that in the spinlock protected area above the delayed_flags
154 * have been cleared correctly.
156 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
159 if (delayed_flags & DELAYED_UPDATE_BEACON)
160 rt2x00queue_update_beacon(rt2x00dev, vif, true);
162 if (delayed_flags & DELAYED_CONFIG_ERP)
163 rt2x00lib_config_erp(rt2x00dev, intf, &conf);
165 if (delayed_flags & DELAYED_LED_ASSOC)
166 rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
169 static void rt2x00lib_intf_scheduled(struct work_struct *work)
171 struct rt2x00_dev *rt2x00dev =
172 container_of(work, struct rt2x00_dev, intf_work);
175 * Iterate over each interface and perform the
176 * requested configurations.
178 ieee80211_iterate_active_interfaces(rt2x00dev->hw,
179 rt2x00lib_intf_scheduled_iter,
184 * Interrupt context handlers.
186 static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
187 struct ieee80211_vif *vif)
189 struct rt2x00_dev *rt2x00dev = data;
190 struct rt2x00_intf *intf = vif_to_intf(vif);
192 if (vif->type != NL80211_IFTYPE_AP &&
193 vif->type != NL80211_IFTYPE_ADHOC &&
194 vif->type != NL80211_IFTYPE_MESH_POINT &&
195 vif->type != NL80211_IFTYPE_WDS)
199 * Clean up the beacon skb.
201 rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb);
202 intf->beacon->skb = NULL;
204 spin_lock(&intf->lock);
205 intf->delayed_flags |= DELAYED_UPDATE_BEACON;
206 spin_unlock(&intf->lock);
209 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
211 if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
214 ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
215 rt2x00lib_beacondone_iter,
218 ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work);
220 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
222 void rt2x00lib_txdone(struct queue_entry *entry,
223 struct txdone_entry_desc *txdesc)
225 struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
226 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
227 struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
228 enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
229 unsigned int header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
230 u8 rate_idx, rate_flags;
235 rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
238 * Remove L2 padding which was added during
240 if (test_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags))
241 rt2x00queue_payload_align(entry->skb, true, header_length);
244 * If the IV/EIV data was stripped from the frame before it was
245 * passed to the hardware, we should now reinsert it again because
246 * mac80211 will expect the the same data to be present it the
247 * frame as it was passed to us.
249 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags))
250 rt2x00crypto_tx_insert_iv(entry->skb, header_length);
253 * Send frame to debugfs immediately, after this call is completed
254 * we are going to overwrite the skb->cb array.
256 rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb);
259 * Update TX statistics.
261 rt2x00dev->link.qual.tx_success +=
262 test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
263 test_bit(TXDONE_UNKNOWN, &txdesc->flags);
264 rt2x00dev->link.qual.tx_failed +=
265 test_bit(TXDONE_FAILURE, &txdesc->flags);
267 rate_idx = skbdesc->tx_rate_idx;
268 rate_flags = skbdesc->tx_rate_flags;
271 * Initialize TX status
273 memset(&tx_info->status, 0, sizeof(tx_info->status));
274 tx_info->status.ack_signal = 0;
275 tx_info->status.rates[0].idx = rate_idx;
276 tx_info->status.rates[0].flags = rate_flags;
277 tx_info->status.rates[0].count = txdesc->retry + 1;
278 tx_info->status.rates[1].idx = -1; /* terminate */
280 if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
281 if (test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
282 test_bit(TXDONE_UNKNOWN, &txdesc->flags))
283 tx_info->flags |= IEEE80211_TX_STAT_ACK;
284 else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
285 rt2x00dev->low_level_stats.dot11ACKFailureCount++;
288 if (rate_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
289 if (test_bit(TXDONE_SUCCESS, &txdesc->flags) ||
290 test_bit(TXDONE_UNKNOWN, &txdesc->flags))
291 rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
292 else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
293 rt2x00dev->low_level_stats.dot11RTSFailureCount++;
297 * Only send the status report to mac80211 when TX status was
298 * requested by it. If this was a extra frame coming through
299 * a mac80211 library call (RTS/CTS) then we should not send the
300 * status report back.
302 if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
303 ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
305 dev_kfree_skb_irq(entry->skb);
308 * Make this entry available for reuse.
313 rt2x00dev->ops->lib->clear_entry(entry);
315 clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
316 rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
319 * If the data queue was below the threshold before the txdone
320 * handler we must make sure the packet queue in the mac80211 stack
321 * is reenabled when the txdone handler has finished.
323 if (!rt2x00queue_threshold(entry->queue))
324 ieee80211_wake_queue(rt2x00dev->hw, qid);
326 EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
328 static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev,
329 struct rxdone_entry_desc *rxdesc)
331 struct ieee80211_supported_band *sband;
332 const struct rt2x00_rate *rate;
338 * For non-HT rates the MCS value needs to contain the
339 * actually used rate modulation (CCK or OFDM).
341 if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS)
342 signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal);
344 signal = rxdesc->signal;
346 type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK);
348 sband = &rt2x00dev->bands[rt2x00dev->curr_band];
349 for (i = 0; i < sband->n_bitrates; i++) {
350 rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
352 if (((type == RXDONE_SIGNAL_PLCP) &&
353 (rate->plcp == signal)) ||
354 ((type == RXDONE_SIGNAL_BITRATE) &&
355 (rate->bitrate == signal)) ||
356 ((type == RXDONE_SIGNAL_MCS) &&
357 (rate->mcs == signal))) {
362 WARNING(rt2x00dev, "Frame received with unrecognized signal, "
363 "signal=0x%.4x, type=%d.\n", signal, type);
367 void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
368 struct queue_entry *entry)
370 struct rxdone_entry_desc rxdesc;
372 struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
373 unsigned int header_length;
377 * Allocate a new sk_buffer. If no new buffer available, drop the
378 * received frame and reuse the existing buffer.
380 skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry);
387 rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
390 * Extract the RXD details.
392 memset(&rxdesc, 0, sizeof(rxdesc));
393 rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
395 /* Trim buffer to correct size */
396 skb_trim(entry->skb, rxdesc.size);
399 * The data behind the ieee80211 header must be
400 * aligned on a 4 byte boundary.
402 header_length = ieee80211_get_hdrlen_from_skb(entry->skb);
403 l2pad = !!(rxdesc.dev_flags & RXDONE_L2PAD);
406 * Hardware might have stripped the IV/EIV/ICV data,
407 * in that case it is possible that the data was
408 * provided seperately (through hardware descriptor)
409 * in which case we should reinsert the data into the frame.
411 if ((rxdesc.dev_flags & RXDONE_CRYPTO_IV) &&
412 (rxdesc.flags & RX_FLAG_IV_STRIPPED))
413 rt2x00crypto_rx_insert_iv(entry->skb, l2pad, header_length,
416 rt2x00queue_payload_align(entry->skb, l2pad, header_length);
419 * Check if the frame was received using HT. In that case,
420 * the rate is the MCS index and should be passed to mac80211
421 * directly. Otherwise we need to translate the signal to
422 * the correct bitrate index.
424 if (rxdesc.rate_mode == RATE_MODE_CCK ||
425 rxdesc.rate_mode == RATE_MODE_OFDM) {
426 rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
428 rxdesc.flags |= RX_FLAG_HT;
429 rate_idx = rxdesc.signal;
433 * Update extra components
435 rt2x00link_update_stats(rt2x00dev, entry->skb, &rxdesc);
436 rt2x00debug_update_crypto(rt2x00dev, &rxdesc);
438 rx_status->mactime = rxdesc.timestamp;
439 rx_status->rate_idx = rate_idx;
440 rx_status->qual = rt2x00link_calculate_signal(rt2x00dev, rxdesc.rssi);
441 rx_status->signal = rxdesc.rssi;
442 rx_status->noise = rxdesc.noise;
443 rx_status->flag = rxdesc.flags;
444 rx_status->antenna = rt2x00dev->link.ant.active.rx;
447 * Send frame to mac80211 & debugfs.
448 * mac80211 will clean up the skb structure.
450 rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
451 memcpy(IEEE80211_SKB_RXCB(entry->skb), rx_status, sizeof(*rx_status));
452 ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb);
455 * Replace the skb with the freshly allocated one.
460 rt2x00dev->ops->lib->clear_entry(entry);
462 rt2x00queue_index_inc(entry->queue, Q_INDEX);
464 EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
467 * Driver initialization handlers.
469 const struct rt2x00_rate rt2x00_supported_rates[12] = {
471 .flags = DEV_RATE_CCK,
475 .mcs = RATE_MCS(RATE_MODE_CCK, 0),
478 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
482 .mcs = RATE_MCS(RATE_MODE_CCK, 1),
485 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
489 .mcs = RATE_MCS(RATE_MODE_CCK, 2),
492 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
496 .mcs = RATE_MCS(RATE_MODE_CCK, 3),
499 .flags = DEV_RATE_OFDM,
503 .mcs = RATE_MCS(RATE_MODE_OFDM, 0),
506 .flags = DEV_RATE_OFDM,
510 .mcs = RATE_MCS(RATE_MODE_OFDM, 1),
513 .flags = DEV_RATE_OFDM,
517 .mcs = RATE_MCS(RATE_MODE_OFDM, 2),
520 .flags = DEV_RATE_OFDM,
524 .mcs = RATE_MCS(RATE_MODE_OFDM, 3),
527 .flags = DEV_RATE_OFDM,
531 .mcs = RATE_MCS(RATE_MODE_OFDM, 4),
534 .flags = DEV_RATE_OFDM,
538 .mcs = RATE_MCS(RATE_MODE_OFDM, 5),
541 .flags = DEV_RATE_OFDM,
545 .mcs = RATE_MCS(RATE_MODE_OFDM, 6),
548 .flags = DEV_RATE_OFDM,
552 .mcs = RATE_MCS(RATE_MODE_OFDM, 7),
556 static void rt2x00lib_channel(struct ieee80211_channel *entry,
557 const int channel, const int tx_power,
560 entry->center_freq = ieee80211_channel_to_frequency(channel);
561 entry->hw_value = value;
562 entry->max_power = tx_power;
563 entry->max_antenna_gain = 0xff;
566 static void rt2x00lib_rate(struct ieee80211_rate *entry,
567 const u16 index, const struct rt2x00_rate *rate)
570 entry->bitrate = rate->bitrate;
571 entry->hw_value =index;
572 entry->hw_value_short = index;
574 if (rate->flags & DEV_RATE_SHORT_PREAMBLE)
575 entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
578 static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
579 struct hw_mode_spec *spec)
581 struct ieee80211_hw *hw = rt2x00dev->hw;
582 struct ieee80211_channel *channels;
583 struct ieee80211_rate *rates;
584 unsigned int num_rates;
588 if (spec->supported_rates & SUPPORT_RATE_CCK)
590 if (spec->supported_rates & SUPPORT_RATE_OFDM)
593 channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL);
597 rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL);
599 goto exit_free_channels;
602 * Initialize Rate list.
604 for (i = 0; i < num_rates; i++)
605 rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i));
608 * Initialize Channel list.
610 for (i = 0; i < spec->num_channels; i++) {
611 rt2x00lib_channel(&channels[i],
612 spec->channels[i].channel,
613 spec->channels_info[i].tx_power1, i);
617 * Intitialize 802.11b, 802.11g
621 if (spec->supported_bands & SUPPORT_BAND_2GHZ) {
622 rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14;
623 rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates;
624 rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels;
625 rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates;
626 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
627 &rt2x00dev->bands[IEEE80211_BAND_2GHZ];
628 memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap,
629 &spec->ht, sizeof(spec->ht));
633 * Intitialize 802.11a
635 * Channels: OFDM, UNII, HiperLAN2.
637 if (spec->supported_bands & SUPPORT_BAND_5GHZ) {
638 rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels =
639 spec->num_channels - 14;
640 rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates =
642 rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14];
643 rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4];
644 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
645 &rt2x00dev->bands[IEEE80211_BAND_5GHZ];
646 memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap,
647 &spec->ht, sizeof(spec->ht));
654 ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n");
658 static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
660 if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
661 ieee80211_unregister_hw(rt2x00dev->hw);
663 if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) {
664 kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels);
665 kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates);
666 rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
667 rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
670 kfree(rt2x00dev->spec.channels_info);
673 static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
675 struct hw_mode_spec *spec = &rt2x00dev->spec;
678 if (test_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags))
682 * Initialize HW modes.
684 status = rt2x00lib_probe_hw_modes(rt2x00dev, spec);
689 * Initialize HW fields.
691 rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues;
696 status = ieee80211_register_hw(rt2x00dev->hw);
700 set_bit(DEVICE_STATE_REGISTERED_HW, &rt2x00dev->flags);
706 * Initialization/uninitialization handlers.
708 static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
710 if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
714 * Unregister extra components.
716 rt2x00rfkill_unregister(rt2x00dev);
719 * Allow the HW to uninitialize.
721 rt2x00dev->ops->lib->uninitialize(rt2x00dev);
724 * Free allocated queue entries.
726 rt2x00queue_uninitialize(rt2x00dev);
729 static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
733 if (test_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags))
737 * Allocate all queue entries.
739 status = rt2x00queue_initialize(rt2x00dev);
744 * Initialize the device.
746 status = rt2x00dev->ops->lib->initialize(rt2x00dev);
748 rt2x00queue_uninitialize(rt2x00dev);
752 set_bit(DEVICE_STATE_INITIALIZED, &rt2x00dev->flags);
755 * Register the extra components.
757 rt2x00rfkill_register(rt2x00dev);
762 int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
766 if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
770 * If this is the first interface which is added,
771 * we should load the firmware now.
773 retval = rt2x00lib_load_firmware(rt2x00dev);
778 * Initialize the device.
780 retval = rt2x00lib_initialize(rt2x00dev);
784 rt2x00dev->intf_ap_count = 0;
785 rt2x00dev->intf_sta_count = 0;
786 rt2x00dev->intf_associated = 0;
788 /* Enable the radio */
789 retval = rt2x00lib_enable_radio(rt2x00dev);
791 rt2x00queue_uninitialize(rt2x00dev);
795 set_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags);
800 void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
802 if (!test_and_clear_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
806 * Perhaps we can add something smarter here,
807 * but for now just disabling the radio should do.
809 rt2x00lib_disable_radio(rt2x00dev);
811 rt2x00dev->intf_ap_count = 0;
812 rt2x00dev->intf_sta_count = 0;
813 rt2x00dev->intf_associated = 0;
817 * driver allocation handlers.
819 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
821 int retval = -ENOMEM;
823 mutex_init(&rt2x00dev->csr_mutex);
826 * Make room for rt2x00_intf inside the per-interface
827 * structure ieee80211_vif.
829 rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf);
832 * Determine which operating modes are supported, all modes
833 * which require beaconing, depend on the availability of
836 rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
837 if (rt2x00dev->ops->bcn->entry_num > 0)
838 rt2x00dev->hw->wiphy->interface_modes |=
839 BIT(NL80211_IFTYPE_ADHOC) |
840 BIT(NL80211_IFTYPE_AP) |
841 BIT(NL80211_IFTYPE_MESH_POINT) |
842 BIT(NL80211_IFTYPE_WDS);
845 * Let the driver probe the device to detect the capabilities.
847 retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev);
849 ERROR(rt2x00dev, "Failed to allocate device.\n");
854 * Initialize configuration work.
856 INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
857 INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
860 * Allocate queue array.
862 retval = rt2x00queue_allocate(rt2x00dev);
867 * Initialize ieee80211 structure.
869 retval = rt2x00lib_probe_hw(rt2x00dev);
871 ERROR(rt2x00dev, "Failed to initialize hw.\n");
876 * Register extra components.
878 rt2x00link_register(rt2x00dev);
879 rt2x00leds_register(rt2x00dev);
880 rt2x00debug_register(rt2x00dev);
882 set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
887 rt2x00lib_remove_dev(rt2x00dev);
891 EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev);
893 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
895 clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
900 rt2x00lib_disable_radio(rt2x00dev);
905 cancel_work_sync(&rt2x00dev->filter_work);
906 cancel_work_sync(&rt2x00dev->intf_work);
909 * Uninitialize device.
911 rt2x00lib_uninitialize(rt2x00dev);
914 * Free extra components
916 rt2x00debug_deregister(rt2x00dev);
917 rt2x00leds_unregister(rt2x00dev);
920 * Free ieee80211_hw memory.
922 rt2x00lib_remove_hw(rt2x00dev);
925 * Free firmware image.
927 rt2x00lib_free_firmware(rt2x00dev);
930 * Free queue structures.
932 rt2x00queue_free(rt2x00dev);
934 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
937 * Device state handlers
940 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
942 NOTICE(rt2x00dev, "Going to sleep.\n");
945 * Prevent mac80211 from accessing driver while suspended.
947 if (!test_and_clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
951 * Cleanup as much as possible.
953 rt2x00lib_uninitialize(rt2x00dev);
956 * Suspend/disable extra components.
958 rt2x00leds_suspend(rt2x00dev);
959 rt2x00debug_deregister(rt2x00dev);
962 * Set device mode to sleep for power management,
963 * on some hardware this call seems to consistently fail.
964 * From the specifications it is hard to tell why it fails,
965 * and if this is a "bad thing".
966 * Overall it is safe to just ignore the failure and
967 * continue suspending. The only downside is that the
968 * device will not be in optimal power save mode, but with
969 * the radio and the other components already disabled the
970 * device is as good as disabled.
972 if (rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP))
973 WARNING(rt2x00dev, "Device failed to enter sleep state, "
974 "continue suspending.\n");
978 EXPORT_SYMBOL_GPL(rt2x00lib_suspend);
980 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
982 NOTICE(rt2x00dev, "Waking up.\n");
985 * Restore/enable extra components.
987 rt2x00debug_register(rt2x00dev);
988 rt2x00leds_resume(rt2x00dev);
991 * We are ready again to receive requests from mac80211.
993 set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
997 EXPORT_SYMBOL_GPL(rt2x00lib_resume);
998 #endif /* CONFIG_PM */
1001 * rt2x00lib module information.
1003 MODULE_AUTHOR(DRV_PROJECT);
1004 MODULE_VERSION(DRV_VERSION);
1005 MODULE_DESCRIPTION("rt2x00 library");
1006 MODULE_LICENSE("GPL");