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
) ||
44 test_bit(DEVICE_STATE_DISABLED_RADIO_HW
, &rt2x00dev
->flags
))
48 * Initialize all data queues.
50 rt2x00queue_init_queues(rt2x00dev
);
56 rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_RADIO_ON
);
60 rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_RADIO_IRQ_ON
);
62 rt2x00leds_led_radio(rt2x00dev
, true);
63 rt2x00led_led_activity(rt2x00dev
, true);
65 set_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
);
70 rt2x00lib_toggle_rx(rt2x00dev
, STATE_RADIO_RX_ON
);
73 * Start the TX queues.
75 ieee80211_wake_queues(rt2x00dev
->hw
);
80 void rt2x00lib_disable_radio(struct rt2x00_dev
*rt2x00dev
)
82 if (!test_and_clear_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
86 * Stop the TX queues in mac80211.
88 ieee80211_stop_queues(rt2x00dev
->hw
);
89 rt2x00queue_stop_queues(rt2x00dev
);
94 rt2x00lib_toggle_rx(rt2x00dev
, STATE_RADIO_RX_OFF
);
99 rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_RADIO_OFF
);
100 rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_RADIO_IRQ_OFF
);
101 rt2x00led_led_activity(rt2x00dev
, false);
102 rt2x00leds_led_radio(rt2x00dev
, false);
105 void rt2x00lib_toggle_rx(struct rt2x00_dev
*rt2x00dev
, enum dev_state state
)
108 * When we are disabling the RX, we should also stop the link tuner.
110 if (state
== STATE_RADIO_RX_OFF
)
111 rt2x00link_stop_tuner(rt2x00dev
);
113 rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, state
);
116 * When we are enabling the RX, we should also start the link tuner.
118 if (state
== STATE_RADIO_RX_ON
)
119 rt2x00link_start_tuner(rt2x00dev
);
122 static void rt2x00lib_packetfilter_scheduled(struct work_struct
*work
)
124 struct rt2x00_dev
*rt2x00dev
=
125 container_of(work
, struct rt2x00_dev
, filter_work
);
127 rt2x00dev
->ops
->lib
->config_filter(rt2x00dev
, rt2x00dev
->packet_filter
);
130 static void rt2x00lib_intf_scheduled_iter(void *data
, u8
*mac
,
131 struct ieee80211_vif
*vif
)
133 struct rt2x00_dev
*rt2x00dev
= data
;
134 struct rt2x00_intf
*intf
= vif_to_intf(vif
);
135 struct ieee80211_bss_conf conf
;
139 * Copy all data we need during this action under the protection
140 * of a spinlock. Otherwise race conditions might occur which results
141 * into an invalid configuration.
143 spin_lock(&intf
->lock
);
145 memcpy(&conf
, &vif
->bss_conf
, sizeof(conf
));
146 delayed_flags
= intf
->delayed_flags
;
147 intf
->delayed_flags
= 0;
149 spin_unlock(&intf
->lock
);
152 * It is possible the radio was disabled while the work had been
153 * scheduled. If that happens we should return here immediately,
154 * note that in the spinlock protected area above the delayed_flags
155 * have been cleared correctly.
157 if (!test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
160 if (delayed_flags
& DELAYED_UPDATE_BEACON
)
161 rt2x00queue_update_beacon(rt2x00dev
, vif
, true);
163 if (delayed_flags
& DELAYED_CONFIG_ERP
)
164 rt2x00lib_config_erp(rt2x00dev
, intf
, &conf
);
166 if (delayed_flags
& DELAYED_LED_ASSOC
)
167 rt2x00leds_led_assoc(rt2x00dev
, !!rt2x00dev
->intf_associated
);
170 static void rt2x00lib_intf_scheduled(struct work_struct
*work
)
172 struct rt2x00_dev
*rt2x00dev
=
173 container_of(work
, struct rt2x00_dev
, intf_work
);
176 * Iterate over each interface and perform the
177 * requested configurations.
179 ieee80211_iterate_active_interfaces(rt2x00dev
->hw
,
180 rt2x00lib_intf_scheduled_iter
,
185 * Interrupt context handlers.
187 static void rt2x00lib_beacondone_iter(void *data
, u8
*mac
,
188 struct ieee80211_vif
*vif
)
190 struct rt2x00_dev
*rt2x00dev
= data
;
191 struct rt2x00_intf
*intf
= vif_to_intf(vif
);
193 if (vif
->type
!= NL80211_IFTYPE_AP
&&
194 vif
->type
!= NL80211_IFTYPE_ADHOC
&&
195 vif
->type
!= NL80211_IFTYPE_MESH_POINT
&&
196 vif
->type
!= NL80211_IFTYPE_WDS
)
200 * Clean up the beacon skb.
202 rt2x00queue_free_skb(rt2x00dev
, intf
->beacon
->skb
);
203 intf
->beacon
->skb
= NULL
;
205 spin_lock(&intf
->lock
);
206 intf
->delayed_flags
|= DELAYED_UPDATE_BEACON
;
207 spin_unlock(&intf
->lock
);
210 void rt2x00lib_beacondone(struct rt2x00_dev
*rt2x00dev
)
212 if (!test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
215 ieee80211_iterate_active_interfaces_atomic(rt2x00dev
->hw
,
216 rt2x00lib_beacondone_iter
,
219 queue_work(rt2x00dev
->hw
->workqueue
, &rt2x00dev
->intf_work
);
221 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone
);
223 void rt2x00lib_txdone(struct queue_entry
*entry
,
224 struct txdone_entry_desc
*txdesc
)
226 struct rt2x00_dev
*rt2x00dev
= entry
->queue
->rt2x00dev
;
227 struct ieee80211_tx_info
*tx_info
= IEEE80211_SKB_CB(entry
->skb
);
228 struct skb_frame_desc
*skbdesc
= get_skb_frame_desc(entry
->skb
);
229 enum data_queue_qid qid
= skb_get_queue_mapping(entry
->skb
);
230 u8 rate_idx
, rate_flags
;
235 rt2x00queue_unmap_skb(rt2x00dev
, entry
->skb
);
238 * If the IV/EIV data was stripped from the frame before it was
239 * passed to the hardware, we should now reinsert it again because
240 * mac80211 will expect the the same data to be present it the
241 * frame as it was passed to us.
243 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO
, &rt2x00dev
->flags
))
244 rt2x00crypto_tx_insert_iv(entry
->skb
);
247 * Send frame to debugfs immediately, after this call is completed
248 * we are going to overwrite the skb->cb array.
250 rt2x00debug_dump_frame(rt2x00dev
, DUMP_FRAME_TXDONE
, entry
->skb
);
253 * Update TX statistics.
255 rt2x00dev
->link
.qual
.tx_success
+=
256 test_bit(TXDONE_SUCCESS
, &txdesc
->flags
);
257 rt2x00dev
->link
.qual
.tx_failed
+=
258 test_bit(TXDONE_FAILURE
, &txdesc
->flags
);
260 rate_idx
= skbdesc
->tx_rate_idx
;
261 rate_flags
= skbdesc
->tx_rate_flags
;
264 * Initialize TX status
266 memset(&tx_info
->status
, 0, sizeof(tx_info
->status
));
267 tx_info
->status
.ack_signal
= 0;
268 tx_info
->status
.rates
[0].idx
= rate_idx
;
269 tx_info
->status
.rates
[0].flags
= rate_flags
;
270 tx_info
->status
.rates
[0].count
= txdesc
->retry
+ 1;
271 tx_info
->status
.rates
[1].idx
= -1; /* terminate */
273 if (!(tx_info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
274 if (test_bit(TXDONE_SUCCESS
, &txdesc
->flags
))
275 tx_info
->flags
|= IEEE80211_TX_STAT_ACK
;
276 else if (test_bit(TXDONE_FAILURE
, &txdesc
->flags
))
277 rt2x00dev
->low_level_stats
.dot11ACKFailureCount
++;
280 if (rate_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
281 if (test_bit(TXDONE_SUCCESS
, &txdesc
->flags
))
282 rt2x00dev
->low_level_stats
.dot11RTSSuccessCount
++;
283 else if (test_bit(TXDONE_FAILURE
, &txdesc
->flags
))
284 rt2x00dev
->low_level_stats
.dot11RTSFailureCount
++;
288 * Only send the status report to mac80211 when TX status was
289 * requested by it. If this was a extra frame coming through
290 * a mac80211 library call (RTS/CTS) then we should not send the
291 * status report back.
293 if (tx_info
->flags
& IEEE80211_TX_CTL_REQ_TX_STATUS
)
294 ieee80211_tx_status_irqsafe(rt2x00dev
->hw
, entry
->skb
);
296 dev_kfree_skb_irq(entry
->skb
);
299 * Make this entry available for reuse.
304 rt2x00dev
->ops
->lib
->clear_entry(entry
);
306 clear_bit(ENTRY_OWNER_DEVICE_DATA
, &entry
->flags
);
307 rt2x00queue_index_inc(entry
->queue
, Q_INDEX_DONE
);
310 * If the data queue was below the threshold before the txdone
311 * handler we must make sure the packet queue in the mac80211 stack
312 * is reenabled when the txdone handler has finished.
314 if (!rt2x00queue_threshold(entry
->queue
))
315 ieee80211_wake_queue(rt2x00dev
->hw
, qid
);
317 EXPORT_SYMBOL_GPL(rt2x00lib_txdone
);
319 void rt2x00lib_rxdone(struct rt2x00_dev
*rt2x00dev
,
320 struct queue_entry
*entry
)
322 struct rxdone_entry_desc rxdesc
;
324 struct ieee80211_rx_status
*rx_status
= &rt2x00dev
->rx_status
;
325 struct ieee80211_supported_band
*sband
;
326 const struct rt2x00_rate
*rate
;
327 unsigned int header_length
;
333 * Allocate a new sk_buffer. If no new buffer available, drop the
334 * received frame and reuse the existing buffer.
336 skb
= rt2x00queue_alloc_rxskb(rt2x00dev
, entry
);
343 rt2x00queue_unmap_skb(rt2x00dev
, entry
->skb
);
346 * Extract the RXD details.
348 memset(&rxdesc
, 0, sizeof(rxdesc
));
349 rt2x00dev
->ops
->lib
->fill_rxdone(entry
, &rxdesc
);
352 * The data behind the ieee80211 header must be
353 * aligned on a 4 byte boundary.
355 header_length
= ieee80211_get_hdrlen_from_skb(entry
->skb
);
356 align
= ((unsigned long)(entry
->skb
->data
+ header_length
)) & 3;
359 * Hardware might have stripped the IV/EIV/ICV data,
360 * in that case it is possible that the data was
361 * provided seperately (through hardware descriptor)
362 * in which case we should reinsert the data into the frame.
364 if ((rxdesc
.dev_flags
& RXDONE_CRYPTO_IV
) &&
365 (rxdesc
.flags
& RX_FLAG_IV_STRIPPED
)) {
366 rt2x00crypto_rx_insert_iv(entry
->skb
, align
,
367 header_length
, &rxdesc
);
369 skb_push(entry
->skb
, align
);
370 /* Move entire frame in 1 command */
371 memmove(entry
->skb
->data
, entry
->skb
->data
+ align
,
375 /* Update data pointers, trim buffer to correct size */
376 skb_trim(entry
->skb
, rxdesc
.size
);
379 * Update RX statistics.
381 sband
= &rt2x00dev
->bands
[rt2x00dev
->curr_band
];
382 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
383 rate
= rt2x00_get_rate(sband
->bitrates
[i
].hw_value
);
385 if (((rxdesc
.dev_flags
& RXDONE_SIGNAL_PLCP
) &&
386 (rate
->plcp
== rxdesc
.signal
)) ||
387 ((rxdesc
.dev_flags
& RXDONE_SIGNAL_BITRATE
) &&
388 (rate
->bitrate
== rxdesc
.signal
))) {
395 WARNING(rt2x00dev
, "Frame received with unrecognized signal,"
396 "signal=0x%.2x, type=%d.\n", rxdesc
.signal
,
397 (rxdesc
.dev_flags
& RXDONE_SIGNAL_MASK
));
402 * Update extra components
404 rt2x00link_update_stats(rt2x00dev
, entry
->skb
, &rxdesc
);
405 rt2x00debug_update_crypto(rt2x00dev
, &rxdesc
);
407 rx_status
->mactime
= rxdesc
.timestamp
;
408 rx_status
->rate_idx
= idx
;
409 rx_status
->qual
= rt2x00link_calculate_signal(rt2x00dev
, rxdesc
.rssi
);
410 rx_status
->signal
= rxdesc
.rssi
;
411 rx_status
->noise
= rxdesc
.noise
;
412 rx_status
->flag
= rxdesc
.flags
;
413 rx_status
->antenna
= rt2x00dev
->link
.ant
.active
.rx
;
416 * Send frame to mac80211 & debugfs.
417 * mac80211 will clean up the skb structure.
419 rt2x00debug_dump_frame(rt2x00dev
, DUMP_FRAME_RXDONE
, entry
->skb
);
420 ieee80211_rx_irqsafe(rt2x00dev
->hw
, entry
->skb
, rx_status
);
423 * Replace the skb with the freshly allocated one.
428 rt2x00dev
->ops
->lib
->clear_entry(entry
);
430 rt2x00queue_index_inc(entry
->queue
, Q_INDEX
);
432 EXPORT_SYMBOL_GPL(rt2x00lib_rxdone
);
435 * Driver initialization handlers.
437 const struct rt2x00_rate rt2x00_supported_rates
[12] = {
439 .flags
= DEV_RATE_CCK
,
445 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
451 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
457 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
463 .flags
= DEV_RATE_OFDM
,
469 .flags
= DEV_RATE_OFDM
,
475 .flags
= DEV_RATE_OFDM
,
481 .flags
= DEV_RATE_OFDM
,
487 .flags
= DEV_RATE_OFDM
,
493 .flags
= DEV_RATE_OFDM
,
499 .flags
= DEV_RATE_OFDM
,
505 .flags
= DEV_RATE_OFDM
,
512 static void rt2x00lib_channel(struct ieee80211_channel
*entry
,
513 const int channel
, const int tx_power
,
516 entry
->center_freq
= ieee80211_channel_to_frequency(channel
);
517 entry
->hw_value
= value
;
518 entry
->max_power
= tx_power
;
519 entry
->max_antenna_gain
= 0xff;
522 static void rt2x00lib_rate(struct ieee80211_rate
*entry
,
523 const u16 index
, const struct rt2x00_rate
*rate
)
526 entry
->bitrate
= rate
->bitrate
;
527 entry
->hw_value
=index
;
528 entry
->hw_value_short
= index
;
530 if (rate
->flags
& DEV_RATE_SHORT_PREAMBLE
)
531 entry
->flags
|= IEEE80211_RATE_SHORT_PREAMBLE
;
534 static int rt2x00lib_probe_hw_modes(struct rt2x00_dev
*rt2x00dev
,
535 struct hw_mode_spec
*spec
)
537 struct ieee80211_hw
*hw
= rt2x00dev
->hw
;
538 struct ieee80211_channel
*channels
;
539 struct ieee80211_rate
*rates
;
540 unsigned int num_rates
;
544 if (spec
->supported_rates
& SUPPORT_RATE_CCK
)
546 if (spec
->supported_rates
& SUPPORT_RATE_OFDM
)
549 channels
= kzalloc(sizeof(*channels
) * spec
->num_channels
, GFP_KERNEL
);
553 rates
= kzalloc(sizeof(*rates
) * num_rates
, GFP_KERNEL
);
555 goto exit_free_channels
;
558 * Initialize Rate list.
560 for (i
= 0; i
< num_rates
; i
++)
561 rt2x00lib_rate(&rates
[i
], i
, rt2x00_get_rate(i
));
564 * Initialize Channel list.
566 for (i
= 0; i
< spec
->num_channels
; i
++) {
567 rt2x00lib_channel(&channels
[i
],
568 spec
->channels
[i
].channel
,
569 spec
->channels_info
[i
].tx_power1
, i
);
573 * Intitialize 802.11b, 802.11g
577 if (spec
->supported_bands
& SUPPORT_BAND_2GHZ
) {
578 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].n_channels
= 14;
579 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
= num_rates
;
580 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].channels
= channels
;
581 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].bitrates
= rates
;
582 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
583 &rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
];
587 * Intitialize 802.11a
589 * Channels: OFDM, UNII, HiperLAN2.
591 if (spec
->supported_bands
& SUPPORT_BAND_5GHZ
) {
592 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].n_channels
=
593 spec
->num_channels
- 14;
594 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
=
596 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].channels
= &channels
[14];
597 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].bitrates
= &rates
[4];
598 hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
599 &rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
];
606 ERROR(rt2x00dev
, "Allocation ieee80211 modes failed.\n");
610 static void rt2x00lib_remove_hw(struct rt2x00_dev
*rt2x00dev
)
612 if (test_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
))
613 ieee80211_unregister_hw(rt2x00dev
->hw
);
615 if (likely(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
])) {
616 kfree(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
]->channels
);
617 kfree(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
]->bitrates
);
618 rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = NULL
;
619 rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] = NULL
;
622 kfree(rt2x00dev
->spec
.channels_info
);
625 static int rt2x00lib_probe_hw(struct rt2x00_dev
*rt2x00dev
)
627 struct hw_mode_spec
*spec
= &rt2x00dev
->spec
;
630 if (test_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
))
634 * Initialize HW modes.
636 status
= rt2x00lib_probe_hw_modes(rt2x00dev
, spec
);
641 * Initialize HW fields.
643 rt2x00dev
->hw
->queues
= rt2x00dev
->ops
->tx_queues
;
648 status
= ieee80211_register_hw(rt2x00dev
->hw
);
652 set_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
);
658 * Initialization/uninitialization handlers.
660 static void rt2x00lib_uninitialize(struct rt2x00_dev
*rt2x00dev
)
662 if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
))
666 * Unregister extra components.
668 rt2x00rfkill_unregister(rt2x00dev
);
671 * Allow the HW to uninitialize.
673 rt2x00dev
->ops
->lib
->uninitialize(rt2x00dev
);
676 * Free allocated queue entries.
678 rt2x00queue_uninitialize(rt2x00dev
);
681 static int rt2x00lib_initialize(struct rt2x00_dev
*rt2x00dev
)
685 if (test_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
))
689 * Allocate all queue entries.
691 status
= rt2x00queue_initialize(rt2x00dev
);
696 * Initialize the device.
698 status
= rt2x00dev
->ops
->lib
->initialize(rt2x00dev
);
700 rt2x00queue_uninitialize(rt2x00dev
);
704 set_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
);
707 * Register the extra components.
709 rt2x00rfkill_register(rt2x00dev
);
714 int rt2x00lib_start(struct rt2x00_dev
*rt2x00dev
)
718 if (test_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
722 * If this is the first interface which is added,
723 * we should load the firmware now.
725 retval
= rt2x00lib_load_firmware(rt2x00dev
);
730 * Initialize the device.
732 retval
= rt2x00lib_initialize(rt2x00dev
);
736 rt2x00dev
->intf_ap_count
= 0;
737 rt2x00dev
->intf_sta_count
= 0;
738 rt2x00dev
->intf_associated
= 0;
740 set_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
);
745 void rt2x00lib_stop(struct rt2x00_dev
*rt2x00dev
)
747 if (!test_and_clear_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
751 * Perhaps we can add something smarter here,
752 * but for now just disabling the radio should do.
754 rt2x00lib_disable_radio(rt2x00dev
);
756 rt2x00dev
->intf_ap_count
= 0;
757 rt2x00dev
->intf_sta_count
= 0;
758 rt2x00dev
->intf_associated
= 0;
762 * driver allocation handlers.
764 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
)
766 int retval
= -ENOMEM
;
768 mutex_init(&rt2x00dev
->csr_mutex
);
771 * Make room for rt2x00_intf inside the per-interface
772 * structure ieee80211_vif.
774 rt2x00dev
->hw
->vif_data_size
= sizeof(struct rt2x00_intf
);
777 * Determine which operating modes are supported, all modes
778 * which require beaconing, depend on the availability of
781 rt2x00dev
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
782 if (rt2x00dev
->ops
->bcn
->entry_num
> 0)
783 rt2x00dev
->hw
->wiphy
->interface_modes
|=
784 BIT(NL80211_IFTYPE_ADHOC
) |
785 BIT(NL80211_IFTYPE_AP
) |
786 BIT(NL80211_IFTYPE_MESH_POINT
) |
787 BIT(NL80211_IFTYPE_WDS
);
790 * Let the driver probe the device to detect the capabilities.
792 retval
= rt2x00dev
->ops
->lib
->probe_hw(rt2x00dev
);
794 ERROR(rt2x00dev
, "Failed to allocate device.\n");
799 * Initialize configuration work.
801 INIT_WORK(&rt2x00dev
->intf_work
, rt2x00lib_intf_scheduled
);
802 INIT_WORK(&rt2x00dev
->filter_work
, rt2x00lib_packetfilter_scheduled
);
805 * Allocate queue array.
807 retval
= rt2x00queue_allocate(rt2x00dev
);
812 * Initialize ieee80211 structure.
814 retval
= rt2x00lib_probe_hw(rt2x00dev
);
816 ERROR(rt2x00dev
, "Failed to initialize hw.\n");
821 * Register extra components.
823 rt2x00link_register(rt2x00dev
);
824 rt2x00leds_register(rt2x00dev
);
825 rt2x00rfkill_allocate(rt2x00dev
);
826 rt2x00debug_register(rt2x00dev
);
828 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
833 rt2x00lib_remove_dev(rt2x00dev
);
837 EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev
);
839 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
)
841 clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
846 rt2x00lib_disable_radio(rt2x00dev
);
849 * Uninitialize device.
851 rt2x00lib_uninitialize(rt2x00dev
);
854 * Free extra components
856 rt2x00debug_deregister(rt2x00dev
);
857 rt2x00rfkill_free(rt2x00dev
);
858 rt2x00leds_unregister(rt2x00dev
);
861 * Free ieee80211_hw memory.
863 rt2x00lib_remove_hw(rt2x00dev
);
866 * Free firmware image.
868 rt2x00lib_free_firmware(rt2x00dev
);
871 * Free queue structures.
873 rt2x00queue_free(rt2x00dev
);
875 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev
);
878 * Device state handlers
881 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
)
883 NOTICE(rt2x00dev
, "Going to sleep.\n");
886 * Prevent mac80211 from accessing driver while suspended.
888 if (!test_and_clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
))
892 * Cleanup as much as possible.
894 rt2x00lib_uninitialize(rt2x00dev
);
897 * Suspend/disable extra components.
899 rt2x00leds_suspend(rt2x00dev
);
900 rt2x00debug_deregister(rt2x00dev
);
903 * Set device mode to sleep for power management,
904 * on some hardware this call seems to consistently fail.
905 * From the specifications it is hard to tell why it fails,
906 * and if this is a "bad thing".
907 * Overall it is safe to just ignore the failure and
908 * continue suspending. The only downside is that the
909 * device will not be in optimal power save mode, but with
910 * the radio and the other components already disabled the
911 * device is as good as disabled.
913 if (rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_SLEEP
))
914 WARNING(rt2x00dev
, "Device failed to enter sleep state, "
915 "continue suspending.\n");
919 EXPORT_SYMBOL_GPL(rt2x00lib_suspend
);
921 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
)
923 NOTICE(rt2x00dev
, "Waking up.\n");
926 * Restore/enable extra components.
928 rt2x00debug_register(rt2x00dev
);
929 rt2x00leds_resume(rt2x00dev
);
932 * We are ready again to receive requests from mac80211.
934 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
938 EXPORT_SYMBOL_GPL(rt2x00lib_resume
);
939 #endif /* CONFIG_PM */
942 * rt2x00lib module information.
944 MODULE_AUTHOR(DRV_PROJECT
);
945 MODULE_VERSION(DRV_VERSION
);
946 MODULE_DESCRIPTION("rt2x00 library");
947 MODULE_LICENSE("GPL");