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
))
88 ieee80211_stop_queues(rt2x00dev
->hw
);
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
);
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 schedule_work(&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 u8 rate_idx
, rate_flags
;
234 rt2x00queue_unmap_skb(rt2x00dev
, entry
->skb
);
237 * If the IV/EIV data was stripped from the frame before it was
238 * passed to the hardware, we should now reinsert it again because
239 * mac80211 will expect the the same data to be present it the
240 * frame as it was passed to us.
242 if (test_bit(CONFIG_SUPPORT_HW_CRYPTO
, &rt2x00dev
->flags
))
243 rt2x00crypto_tx_insert_iv(entry
->skb
);
246 * Send frame to debugfs immediately, after this call is completed
247 * we are going to overwrite the skb->cb array.
249 rt2x00debug_dump_frame(rt2x00dev
, DUMP_FRAME_TXDONE
, entry
->skb
);
252 * Update TX statistics.
254 rt2x00dev
->link
.qual
.tx_success
+=
255 test_bit(TXDONE_SUCCESS
, &txdesc
->flags
);
256 rt2x00dev
->link
.qual
.tx_failed
+=
257 test_bit(TXDONE_FAILURE
, &txdesc
->flags
);
259 rate_idx
= skbdesc
->tx_rate_idx
;
260 rate_flags
= skbdesc
->tx_rate_flags
;
263 * Initialize TX status
265 memset(&tx_info
->status
, 0, sizeof(tx_info
->status
));
266 tx_info
->status
.ack_signal
= 0;
267 tx_info
->status
.rates
[0].idx
= rate_idx
;
268 tx_info
->status
.rates
[0].flags
= rate_flags
;
269 tx_info
->status
.rates
[0].count
= txdesc
->retry
+ 1;
270 tx_info
->status
.rates
[1].idx
= -1; /* terminate */
272 if (!(tx_info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
273 if (test_bit(TXDONE_SUCCESS
, &txdesc
->flags
))
274 tx_info
->flags
|= IEEE80211_TX_STAT_ACK
;
275 else if (test_bit(TXDONE_FAILURE
, &txdesc
->flags
))
276 rt2x00dev
->low_level_stats
.dot11ACKFailureCount
++;
279 if (rate_flags
& IEEE80211_TX_RC_USE_RTS_CTS
) {
280 if (test_bit(TXDONE_SUCCESS
, &txdesc
->flags
))
281 rt2x00dev
->low_level_stats
.dot11RTSSuccessCount
++;
282 else if (test_bit(TXDONE_FAILURE
, &txdesc
->flags
))
283 rt2x00dev
->low_level_stats
.dot11RTSFailureCount
++;
287 * Only send the status report to mac80211 when TX status was
288 * requested by it. If this was a extra frame coming through
289 * a mac80211 library call (RTS/CTS) then we should not send the
290 * status report back.
292 if (tx_info
->flags
& IEEE80211_TX_CTL_REQ_TX_STATUS
)
293 ieee80211_tx_status_irqsafe(rt2x00dev
->hw
, entry
->skb
);
295 dev_kfree_skb_irq(entry
->skb
);
298 * Make this entry available for reuse.
303 rt2x00dev
->ops
->lib
->clear_entry(entry
);
305 clear_bit(ENTRY_OWNER_DEVICE_DATA
, &entry
->flags
);
306 rt2x00queue_index_inc(entry
->queue
, Q_INDEX_DONE
);
309 * If the data queue was below the threshold before the txdone
310 * handler we must make sure the packet queue in the mac80211 stack
311 * is reenabled when the txdone handler has finished.
313 if (!rt2x00queue_threshold(entry
->queue
))
314 ieee80211_wake_queue(rt2x00dev
->hw
, qid
);
316 EXPORT_SYMBOL_GPL(rt2x00lib_txdone
);
318 void rt2x00lib_rxdone(struct rt2x00_dev
*rt2x00dev
,
319 struct queue_entry
*entry
)
321 struct rxdone_entry_desc rxdesc
;
323 struct ieee80211_rx_status
*rx_status
= &rt2x00dev
->rx_status
;
324 struct ieee80211_supported_band
*sband
;
325 const struct rt2x00_rate
*rate
;
326 unsigned int header_length
;
332 * Allocate a new sk_buffer. If no new buffer available, drop the
333 * received frame and reuse the existing buffer.
335 skb
= rt2x00queue_alloc_rxskb(rt2x00dev
, entry
);
342 rt2x00queue_unmap_skb(rt2x00dev
, entry
->skb
);
345 * Extract the RXD details.
347 memset(&rxdesc
, 0, sizeof(rxdesc
));
348 rt2x00dev
->ops
->lib
->fill_rxdone(entry
, &rxdesc
);
351 * The data behind the ieee80211 header must be
352 * aligned on a 4 byte boundary.
354 header_length
= ieee80211_get_hdrlen_from_skb(entry
->skb
);
355 align
= ((unsigned long)(entry
->skb
->data
+ header_length
)) & 3;
358 * Hardware might have stripped the IV/EIV/ICV data,
359 * in that case it is possible that the data was
360 * provided seperately (through hardware descriptor)
361 * in which case we should reinsert the data into the frame.
363 if ((rxdesc
.dev_flags
& RXDONE_CRYPTO_IV
) &&
364 (rxdesc
.flags
& RX_FLAG_IV_STRIPPED
)) {
365 rt2x00crypto_rx_insert_iv(entry
->skb
, align
,
366 header_length
, &rxdesc
);
368 skb_push(entry
->skb
, align
);
369 /* Move entire frame in 1 command */
370 memmove(entry
->skb
->data
, entry
->skb
->data
+ align
,
374 /* Update data pointers, trim buffer to correct size */
375 skb_trim(entry
->skb
, rxdesc
.size
);
378 * Update RX statistics.
380 sband
= &rt2x00dev
->bands
[rt2x00dev
->curr_band
];
381 for (i
= 0; i
< sband
->n_bitrates
; i
++) {
382 rate
= rt2x00_get_rate(sband
->bitrates
[i
].hw_value
);
384 if (((rxdesc
.dev_flags
& RXDONE_SIGNAL_PLCP
) &&
385 (rate
->plcp
== rxdesc
.signal
)) ||
386 ((rxdesc
.dev_flags
& RXDONE_SIGNAL_BITRATE
) &&
387 (rate
->bitrate
== rxdesc
.signal
))) {
394 WARNING(rt2x00dev
, "Frame received with unrecognized signal,"
395 "signal=0x%.2x, type=%d.\n", rxdesc
.signal
,
396 (rxdesc
.dev_flags
& RXDONE_SIGNAL_MASK
));
401 * Update extra components
403 rt2x00link_update_stats(rt2x00dev
, entry
->skb
, &rxdesc
);
404 rt2x00debug_update_crypto(rt2x00dev
, &rxdesc
);
406 rx_status
->mactime
= rxdesc
.timestamp
;
407 rx_status
->rate_idx
= idx
;
408 rx_status
->qual
= rt2x00link_calculate_signal(rt2x00dev
, rxdesc
.rssi
);
409 rx_status
->signal
= rxdesc
.rssi
;
410 rx_status
->noise
= rxdesc
.noise
;
411 rx_status
->flag
= rxdesc
.flags
;
412 rx_status
->antenna
= rt2x00dev
->link
.ant
.active
.rx
;
415 * Send frame to mac80211 & debugfs.
416 * mac80211 will clean up the skb structure.
418 rt2x00debug_dump_frame(rt2x00dev
, DUMP_FRAME_RXDONE
, entry
->skb
);
419 ieee80211_rx_irqsafe(rt2x00dev
->hw
, entry
->skb
, rx_status
);
422 * Replace the skb with the freshly allocated one.
427 rt2x00dev
->ops
->lib
->clear_entry(entry
);
429 rt2x00queue_index_inc(entry
->queue
, Q_INDEX
);
431 EXPORT_SYMBOL_GPL(rt2x00lib_rxdone
);
434 * Driver initialization handlers.
436 const struct rt2x00_rate rt2x00_supported_rates
[12] = {
438 .flags
= DEV_RATE_CCK
,
444 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
450 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
456 .flags
= DEV_RATE_CCK
| DEV_RATE_SHORT_PREAMBLE
,
462 .flags
= DEV_RATE_OFDM
,
468 .flags
= DEV_RATE_OFDM
,
474 .flags
= DEV_RATE_OFDM
,
480 .flags
= DEV_RATE_OFDM
,
486 .flags
= DEV_RATE_OFDM
,
492 .flags
= DEV_RATE_OFDM
,
498 .flags
= DEV_RATE_OFDM
,
504 .flags
= DEV_RATE_OFDM
,
511 static void rt2x00lib_channel(struct ieee80211_channel
*entry
,
512 const int channel
, const int tx_power
,
515 entry
->center_freq
= ieee80211_channel_to_frequency(channel
);
516 entry
->hw_value
= value
;
517 entry
->max_power
= tx_power
;
518 entry
->max_antenna_gain
= 0xff;
521 static void rt2x00lib_rate(struct ieee80211_rate
*entry
,
522 const u16 index
, const struct rt2x00_rate
*rate
)
525 entry
->bitrate
= rate
->bitrate
;
526 entry
->hw_value
=index
;
527 entry
->hw_value_short
= index
;
529 if (rate
->flags
& DEV_RATE_SHORT_PREAMBLE
)
530 entry
->flags
|= IEEE80211_RATE_SHORT_PREAMBLE
;
533 static int rt2x00lib_probe_hw_modes(struct rt2x00_dev
*rt2x00dev
,
534 struct hw_mode_spec
*spec
)
536 struct ieee80211_hw
*hw
= rt2x00dev
->hw
;
537 struct ieee80211_channel
*channels
;
538 struct ieee80211_rate
*rates
;
539 unsigned int num_rates
;
543 if (spec
->supported_rates
& SUPPORT_RATE_CCK
)
545 if (spec
->supported_rates
& SUPPORT_RATE_OFDM
)
548 channels
= kzalloc(sizeof(*channels
) * spec
->num_channels
, GFP_KERNEL
);
552 rates
= kzalloc(sizeof(*rates
) * num_rates
, GFP_KERNEL
);
554 goto exit_free_channels
;
557 * Initialize Rate list.
559 for (i
= 0; i
< num_rates
; i
++)
560 rt2x00lib_rate(&rates
[i
], i
, rt2x00_get_rate(i
));
563 * Initialize Channel list.
565 for (i
= 0; i
< spec
->num_channels
; i
++) {
566 rt2x00lib_channel(&channels
[i
],
567 spec
->channels
[i
].channel
,
568 spec
->channels_info
[i
].tx_power1
, i
);
572 * Intitialize 802.11b, 802.11g
576 if (spec
->supported_bands
& SUPPORT_BAND_2GHZ
) {
577 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].n_channels
= 14;
578 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].n_bitrates
= num_rates
;
579 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].channels
= channels
;
580 rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
].bitrates
= rates
;
581 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] =
582 &rt2x00dev
->bands
[IEEE80211_BAND_2GHZ
];
586 * Intitialize 802.11a
588 * Channels: OFDM, UNII, HiperLAN2.
590 if (spec
->supported_bands
& SUPPORT_BAND_5GHZ
) {
591 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].n_channels
=
592 spec
->num_channels
- 14;
593 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].n_bitrates
=
595 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].channels
= &channels
[14];
596 rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
].bitrates
= &rates
[4];
597 hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] =
598 &rt2x00dev
->bands
[IEEE80211_BAND_5GHZ
];
605 ERROR(rt2x00dev
, "Allocation ieee80211 modes failed.\n");
609 static void rt2x00lib_remove_hw(struct rt2x00_dev
*rt2x00dev
)
611 if (test_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
))
612 ieee80211_unregister_hw(rt2x00dev
->hw
);
614 if (likely(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
])) {
615 kfree(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
]->channels
);
616 kfree(rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
]->bitrates
);
617 rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = NULL
;
618 rt2x00dev
->hw
->wiphy
->bands
[IEEE80211_BAND_5GHZ
] = NULL
;
621 kfree(rt2x00dev
->spec
.channels_info
);
624 static int rt2x00lib_probe_hw(struct rt2x00_dev
*rt2x00dev
)
626 struct hw_mode_spec
*spec
= &rt2x00dev
->spec
;
629 if (test_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
))
633 * Initialize HW modes.
635 status
= rt2x00lib_probe_hw_modes(rt2x00dev
, spec
);
640 * Initialize HW fields.
642 rt2x00dev
->hw
->queues
= rt2x00dev
->ops
->tx_queues
;
647 status
= ieee80211_register_hw(rt2x00dev
->hw
);
649 rt2x00lib_remove_hw(rt2x00dev
);
653 set_bit(DEVICE_STATE_REGISTERED_HW
, &rt2x00dev
->flags
);
659 * Initialization/uninitialization handlers.
661 static void rt2x00lib_uninitialize(struct rt2x00_dev
*rt2x00dev
)
663 if (!test_and_clear_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
))
667 * Unregister extra components.
669 rt2x00rfkill_unregister(rt2x00dev
);
672 * Allow the HW to uninitialize.
674 rt2x00dev
->ops
->lib
->uninitialize(rt2x00dev
);
677 * Free allocated queue entries.
679 rt2x00queue_uninitialize(rt2x00dev
);
682 static int rt2x00lib_initialize(struct rt2x00_dev
*rt2x00dev
)
686 if (test_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
))
690 * Allocate all queue entries.
692 status
= rt2x00queue_initialize(rt2x00dev
);
697 * Initialize the device.
699 status
= rt2x00dev
->ops
->lib
->initialize(rt2x00dev
);
701 rt2x00queue_uninitialize(rt2x00dev
);
705 set_bit(DEVICE_STATE_INITIALIZED
, &rt2x00dev
->flags
);
708 * Register the extra components.
710 rt2x00rfkill_register(rt2x00dev
);
715 int rt2x00lib_start(struct rt2x00_dev
*rt2x00dev
)
719 if (test_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
723 * If this is the first interface which is added,
724 * we should load the firmware now.
726 retval
= rt2x00lib_load_firmware(rt2x00dev
);
731 * Initialize the device.
733 retval
= rt2x00lib_initialize(rt2x00dev
);
737 rt2x00dev
->intf_ap_count
= 0;
738 rt2x00dev
->intf_sta_count
= 0;
739 rt2x00dev
->intf_associated
= 0;
741 set_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
);
746 void rt2x00lib_stop(struct rt2x00_dev
*rt2x00dev
)
748 if (!test_and_clear_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
752 * Perhaps we can add something smarter here,
753 * but for now just disabling the radio should do.
755 rt2x00lib_disable_radio(rt2x00dev
);
757 rt2x00dev
->intf_ap_count
= 0;
758 rt2x00dev
->intf_sta_count
= 0;
759 rt2x00dev
->intf_associated
= 0;
763 * driver allocation handlers.
765 int rt2x00lib_probe_dev(struct rt2x00_dev
*rt2x00dev
)
767 int retval
= -ENOMEM
;
769 mutex_init(&rt2x00dev
->csr_mutex
);
772 * Make room for rt2x00_intf inside the per-interface
773 * structure ieee80211_vif.
775 rt2x00dev
->hw
->vif_data_size
= sizeof(struct rt2x00_intf
);
778 * Determine which operating modes are supported, all modes
779 * which require beaconing, depend on the availability of
782 rt2x00dev
->hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
783 if (rt2x00dev
->ops
->bcn
->entry_num
> 0)
784 rt2x00dev
->hw
->wiphy
->interface_modes
|=
785 BIT(NL80211_IFTYPE_ADHOC
) |
786 BIT(NL80211_IFTYPE_AP
) |
787 BIT(NL80211_IFTYPE_MESH_POINT
) |
788 BIT(NL80211_IFTYPE_WDS
);
791 * Let the driver probe the device to detect the capabilities.
793 retval
= rt2x00dev
->ops
->lib
->probe_hw(rt2x00dev
);
795 ERROR(rt2x00dev
, "Failed to allocate device.\n");
800 * Initialize configuration work.
802 INIT_WORK(&rt2x00dev
->intf_work
, rt2x00lib_intf_scheduled
);
803 INIT_WORK(&rt2x00dev
->filter_work
, rt2x00lib_packetfilter_scheduled
);
806 * Allocate queue array.
808 retval
= rt2x00queue_allocate(rt2x00dev
);
813 * Initialize ieee80211 structure.
815 retval
= rt2x00lib_probe_hw(rt2x00dev
);
817 ERROR(rt2x00dev
, "Failed to initialize hw.\n");
822 * Register extra components.
824 rt2x00link_register(rt2x00dev
);
825 rt2x00leds_register(rt2x00dev
);
826 rt2x00rfkill_allocate(rt2x00dev
);
827 rt2x00debug_register(rt2x00dev
);
829 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
834 rt2x00lib_remove_dev(rt2x00dev
);
838 EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev
);
840 void rt2x00lib_remove_dev(struct rt2x00_dev
*rt2x00dev
)
842 clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
847 rt2x00lib_disable_radio(rt2x00dev
);
850 * Uninitialize device.
852 rt2x00lib_uninitialize(rt2x00dev
);
855 * Free extra components
857 rt2x00debug_deregister(rt2x00dev
);
858 rt2x00rfkill_free(rt2x00dev
);
859 rt2x00leds_unregister(rt2x00dev
);
862 * Free ieee80211_hw memory.
864 rt2x00lib_remove_hw(rt2x00dev
);
867 * Free firmware image.
869 rt2x00lib_free_firmware(rt2x00dev
);
872 * Free queue structures.
874 rt2x00queue_free(rt2x00dev
);
876 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev
);
879 * Device state handlers
882 int rt2x00lib_suspend(struct rt2x00_dev
*rt2x00dev
, pm_message_t state
)
886 NOTICE(rt2x00dev
, "Going to sleep.\n");
889 * Only continue if mac80211 has open interfaces.
891 if (!test_and_clear_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
) ||
892 !test_bit(DEVICE_STATE_STARTED
, &rt2x00dev
->flags
))
895 set_bit(DEVICE_STATE_STARTED_SUSPEND
, &rt2x00dev
->flags
);
900 rt2x00lib_stop(rt2x00dev
);
901 rt2x00lib_uninitialize(rt2x00dev
);
904 * Suspend/disable extra components.
906 rt2x00leds_suspend(rt2x00dev
);
907 rt2x00debug_deregister(rt2x00dev
);
911 * Set device mode to sleep for power management,
912 * on some hardware this call seems to consistently fail.
913 * From the specifications it is hard to tell why it fails,
914 * and if this is a "bad thing".
915 * Overall it is safe to just ignore the failure and
916 * continue suspending. The only downside is that the
917 * device will not be in optimal power save mode, but with
918 * the radio and the other components already disabled the
919 * device is as good as disabled.
921 retval
= rt2x00dev
->ops
->lib
->set_device_state(rt2x00dev
, STATE_SLEEP
);
923 WARNING(rt2x00dev
, "Device failed to enter sleep state, "
924 "continue suspending.\n");
928 EXPORT_SYMBOL_GPL(rt2x00lib_suspend
);
930 static void rt2x00lib_resume_intf(void *data
, u8
*mac
,
931 struct ieee80211_vif
*vif
)
933 struct rt2x00_dev
*rt2x00dev
= data
;
934 struct rt2x00_intf
*intf
= vif_to_intf(vif
);
936 spin_lock(&intf
->lock
);
938 rt2x00lib_config_intf(rt2x00dev
, intf
,
939 vif
->type
, intf
->mac
, intf
->bssid
);
943 * AP, Ad-hoc, and Mesh Point mode require a new beacon update.
945 if (vif
->type
== NL80211_IFTYPE_AP
||
946 vif
->type
== NL80211_IFTYPE_ADHOC
||
947 vif
->type
== NL80211_IFTYPE_MESH_POINT
||
948 vif
->type
== NL80211_IFTYPE_WDS
)
949 intf
->delayed_flags
|= DELAYED_UPDATE_BEACON
;
951 spin_unlock(&intf
->lock
);
954 int rt2x00lib_resume(struct rt2x00_dev
*rt2x00dev
)
958 NOTICE(rt2x00dev
, "Waking up.\n");
961 * Restore/enable extra components.
963 rt2x00debug_register(rt2x00dev
);
964 rt2x00leds_resume(rt2x00dev
);
967 * Only continue if mac80211 had open interfaces.
969 if (!test_and_clear_bit(DEVICE_STATE_STARTED_SUSPEND
, &rt2x00dev
->flags
))
973 * Reinitialize device and all active interfaces.
975 retval
= rt2x00lib_start(rt2x00dev
);
980 * Reconfigure device.
982 retval
= rt2x00mac_config(rt2x00dev
->hw
, ~0);
987 * Iterator over each active interface to
988 * reconfigure the hardware.
990 ieee80211_iterate_active_interfaces(rt2x00dev
->hw
,
991 rt2x00lib_resume_intf
, rt2x00dev
);
994 * We are ready again to receive requests from mac80211.
996 set_bit(DEVICE_STATE_PRESENT
, &rt2x00dev
->flags
);
999 * It is possible that during that mac80211 has attempted
1000 * to send frames while we were suspending or resuming.
1001 * In that case we have disabled the TX queue and should
1002 * now enable it again
1004 ieee80211_wake_queues(rt2x00dev
->hw
);
1007 * During interface iteration we might have changed the
1008 * delayed_flags, time to handles the event by calling
1009 * the work handler directly.
1011 rt2x00lib_intf_scheduled(&rt2x00dev
->intf_work
);
1016 rt2x00lib_stop(rt2x00dev
);
1017 rt2x00lib_uninitialize(rt2x00dev
);
1018 rt2x00debug_deregister(rt2x00dev
);
1022 EXPORT_SYMBOL_GPL(rt2x00lib_resume
);
1023 #endif /* CONFIG_PM */
1026 * rt2x00lib module information.
1028 MODULE_AUTHOR(DRV_PROJECT
);
1029 MODULE_VERSION(DRV_VERSION
);
1030 MODULE_DESCRIPTION("rt2x00 library");
1031 MODULE_LICENSE("GPL");