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 queue_work(rt2x00dev
->hw
->workqueue
, &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 set_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
);
793 void rt2x00lib_stop(struct rt2x00_dev
*rt2x00dev
)
795 if (!test_and_clear_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
799 * Perhaps we can add something smarter here,
800 * but for now just disabling the radio should do.
802 rt2x00lib_disable_radio(rt2x00dev
);
804 rt2x00dev
->intf_ap_count
= 0;
805 rt2x00dev
->intf_sta_count
= 0;
806 rt2x00dev
->intf_associated
= 0;
810 * driver allocation handlers.
812 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
)
814 int retval
= -ENOMEM
;
816 mutex_init(&rt2x00dev
->csr_mutex
);
819 * Make room for rt2x00_intf inside the per-interface
820 * structure ieee80211_vif.
822 rt2x00dev
->hw
->vif_data_size
= sizeof(struct rt2x00_intf
);
825 * Determine which operating modes are supported, all modes
826 * which require beaconing, depend on the availability of
829 rt2x00dev
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
830 if (rt2x00dev
->ops
->bcn
->entry_num
> 0)
831 rt2x00dev
->hw
->wiphy
->interface_modes
|=
832 BIT(NL80211_IFTYPE_ADHOC
) |
833 BIT(NL80211_IFTYPE_AP
) |
834 BIT(NL80211_IFTYPE_MESH_POINT
) |
835 BIT(NL80211_IFTYPE_WDS
);
838 * Let the driver probe the device to detect the capabilities.
840 retval
= rt2x00dev
->ops
->lib
->probe_hw(rt2x00dev
);
842 ERROR(rt2x00dev
, "Failed to allocate device.\n");
847 * Initialize configuration work.
849 INIT_WORK(&rt2x00dev
->intf_work
, rt2x00lib_intf_scheduled
);
850 INIT_WORK(&rt2x00dev
->filter_work
, rt2x00lib_packetfilter_scheduled
);
853 * Allocate queue array.
855 retval
= rt2x00queue_allocate(rt2x00dev
);
860 * Initialize ieee80211 structure.
862 retval
= rt2x00lib_probe_hw(rt2x00dev
);
864 ERROR(rt2x00dev
, "Failed to initialize hw.\n");
869 * Register extra components.
871 rt2x00link_register(rt2x00dev
);
872 rt2x00leds_register(rt2x00dev
);
873 rt2x00debug_register(rt2x00dev
);
875 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
880 rt2x00lib_remove_dev(rt2x00dev
);
884 EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev
);
886 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
)
888 clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
893 rt2x00lib_disable_radio(rt2x00dev
);
896 * Uninitialize device.
898 rt2x00lib_uninitialize(rt2x00dev
);
901 * Free extra components
903 rt2x00debug_deregister(rt2x00dev
);
904 rt2x00leds_unregister(rt2x00dev
);
907 * Free ieee80211_hw memory.
909 rt2x00lib_remove_hw(rt2x00dev
);
912 * Free firmware image.
914 rt2x00lib_free_firmware(rt2x00dev
);
917 * Free queue structures.
919 rt2x00queue_free(rt2x00dev
);
921 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev
);
924 * Device state handlers
927 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
)
929 NOTICE(rt2x00dev
, "Going to sleep.\n");
932 * Prevent mac80211 from accessing driver while suspended.
934 if (!test_and_clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
))
938 * Cleanup as much as possible.
940 rt2x00lib_uninitialize(rt2x00dev
);
943 * Suspend/disable extra components.
945 rt2x00leds_suspend(rt2x00dev
);
946 rt2x00debug_deregister(rt2x00dev
);
949 * Set device mode to sleep for power management,
950 * on some hardware this call seems to consistently fail.
951 * From the specifications it is hard to tell why it fails,
952 * and if this is a "bad thing".
953 * Overall it is safe to just ignore the failure and
954 * continue suspending. The only downside is that the
955 * device will not be in optimal power save mode, but with
956 * the radio and the other components already disabled the
957 * device is as good as disabled.
959 if (rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_SLEEP
))
960 WARNING(rt2x00dev
, "Device failed to enter sleep state, "
961 "continue suspending.\n");
965 EXPORT_SYMBOL_GPL(rt2x00lib_suspend
);
967 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
)
969 NOTICE(rt2x00dev
, "Waking up.\n");
972 * Restore/enable extra components.
974 rt2x00debug_register(rt2x00dev
);
975 rt2x00leds_resume(rt2x00dev
);
978 * We are ready again to receive requests from mac80211.
980 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
984 EXPORT_SYMBOL_GPL(rt2x00lib_resume
);
985 #endif /* CONFIG_PM */
988 * rt2x00lib module information.
990 MODULE_AUTHOR(DRV_PROJECT
);
991 MODULE_VERSION(DRV_VERSION
);
992 MODULE_DESCRIPTION("rt2x00 library");
993 MODULE_LICENSE("GPL");