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31
32#undef __NO_VERSION__
33
34#include <linux/etherdevice.h>
35#include <linux/file.h>
36#include "device.h"
37#include "card.h"
38#include "baseband.h"
39#include "mac.h"
40#include "power.h"
41#include "wcmd.h"
42#include "rxtx.h"
43#include "dpc.h"
44#include "rf.h"
45#include "firmware.h"
46#include "usbpipe.h"
47#include "channel.h"
48#include "int.h"
49
50
51
52
53
54
55#define DRIVER_AUTHOR \
56 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
57MODULE_AUTHOR(DRIVER_AUTHOR);
58MODULE_LICENSE("GPL");
59MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
60
61#define RX_DESC_DEF0 64
62static int vnt_rx_buffers = RX_DESC_DEF0;
63module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
64MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
65
66#define TX_DESC_DEF0 64
67static int vnt_tx_buffers = TX_DESC_DEF0;
68module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
69MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
70
71#define RTS_THRESH_DEF 2347
72#define FRAG_THRESH_DEF 2346
73#define SHORT_RETRY_DEF 8
74#define LONG_RETRY_DEF 4
75
76
77
78
79
80
81
82#define BBP_TYPE_DEF 2
83
84
85
86
87
88static struct usb_device_id vt6656_table[] = {
89 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
90 {}
91};
92
93static void vnt_set_options(struct vnt_private *priv)
94{
95
96 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
97 priv->num_tx_context = TX_DESC_DEF0;
98 else
99 priv->num_tx_context = vnt_tx_buffers;
100
101
102 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
103 priv->num_rcb = RX_DESC_DEF0;
104 else
105 priv->num_rcb = vnt_rx_buffers;
106
107 priv->short_retry_limit = SHORT_RETRY_DEF;
108 priv->long_retry_limit = LONG_RETRY_DEF;
109 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
110 priv->bb_type = BBP_TYPE_DEF;
111 priv->packet_type = priv->bb_type;
112 priv->auto_fb_ctrl = AUTO_FB_0;
113 priv->preamble_type = 0;
114 priv->exist_sw_net_addr = false;
115}
116
117
118
119
120static int vnt_init_registers(struct vnt_private *priv)
121{
122 struct vnt_cmd_card_init *init_cmd = &priv->init_command;
123 struct vnt_rsp_card_init *init_rsp = &priv->init_response;
124 u8 antenna;
125 int ii;
126 int status = STATUS_SUCCESS;
127 u8 tmp;
128 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
129
130 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
131 DEVICE_INIT_COLD, priv->packet_type);
132
133 if (!vnt_check_firmware_version(priv)) {
134 if (vnt_download_firmware(priv) == true) {
135 if (vnt_firmware_branch_to_sram(priv) == false) {
136 dev_dbg(&priv->usb->dev,
137 " vnt_firmware_branch_to_sram fail\n");
138 return false;
139 }
140 } else {
141 dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
142 return false;
143 }
144 }
145
146 if (!vnt_vt3184_init(priv)) {
147 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
148 return false;
149 }
150
151 init_cmd->init_class = DEVICE_INIT_COLD;
152 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
153 for (ii = 0; ii < 6; ii++)
154 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
155 init_cmd->short_retry_limit = priv->short_retry_limit;
156 init_cmd->long_retry_limit = priv->long_retry_limit;
157
158
159 status = vnt_control_out(priv,
160 MESSAGE_TYPE_CARDINIT, 0, 0,
161 sizeof(struct vnt_cmd_card_init), (u8 *)init_cmd);
162 if (status != STATUS_SUCCESS) {
163 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
164 return false;
165 }
166
167 status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
168 sizeof(struct vnt_rsp_card_init), (u8 *)init_rsp);
169 if (status != STATUS_SUCCESS) {
170 dev_dbg(&priv->usb->dev,
171 "Cardinit request in status fail!\n");
172 return false;
173 }
174
175
176 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
177 MAC_REG_LOCALID, MESSAGE_REQUEST_MACREG, 1,
178 &priv->local_id);
179 if (status != STATUS_SUCCESS)
180 return false;
181
182
183
184 priv->top_ofdm_basic_rate = RATE_24M;
185 priv->top_cck_basic_rate = RATE_1M;
186
187
188 priv->power = 0xFF;
189
190 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
191 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
192
193 for (ii = 0; ii < 14; ii++) {
194 priv->cck_pwr_tbl[ii] =
195 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
196 if (priv->cck_pwr_tbl[ii] == 0)
197 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
198
199 priv->ofdm_pwr_tbl[ii] =
200 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
201 if (priv->ofdm_pwr_tbl[ii] == 0)
202 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
203 }
204
205
206
207
208
209 for (ii = 11; ii < 14; ii++) {
210 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
211 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
212 }
213
214 priv->ofdm_pwr_a = 0x34;
215
216
217 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
218 priv->ofdm_a_pwr_tbl[ii] =
219 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
220
221 if (priv->ofdm_a_pwr_tbl[ii] == 0)
222 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
223 }
224
225 antenna = priv->eeprom[EEP_OFS_ANTENNA];
226
227 if (antenna & EEP_ANTINV)
228 priv->tx_rx_ant_inv = true;
229 else
230 priv->tx_rx_ant_inv = false;
231
232 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
233
234 if (antenna == 0)
235 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
236
237 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
238 priv->tx_antenna_mode = ANT_B;
239 priv->rx_antenna_sel = 1;
240
241 if (priv->tx_rx_ant_inv)
242 priv->rx_antenna_mode = ANT_A;
243 else
244 priv->rx_antenna_mode = ANT_B;
245 } else {
246 priv->rx_antenna_sel = 0;
247
248 if (antenna & EEP_ANTENNA_AUX) {
249 priv->tx_antenna_mode = ANT_A;
250
251 if (priv->tx_rx_ant_inv)
252 priv->rx_antenna_mode = ANT_B;
253 else
254 priv->rx_antenna_mode = ANT_A;
255 } else {
256 priv->tx_antenna_mode = ANT_B;
257
258 if (priv->tx_rx_ant_inv)
259 priv->rx_antenna_mode = ANT_A;
260 else
261 priv->rx_antenna_mode = ANT_B;
262 }
263 }
264
265
266 vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
267
268
269 priv->auto_fb_ctrl = AUTO_FB_0;
270
271
272 priv->bb_type = BB_TYPE_11G;
273
274
275 priv->rf_type = init_rsp->rf_type;
276
277
278 if (priv->rf_type == RF_VT3226D0) {
279 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
280 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
281
282 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
283 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
284 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
285 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
286
287
288
289 vnt_control_out_u8(priv,
290 MESSAGE_REQUEST_BBREG,
291 0xff,
292 0x03);
293
294 vnt_control_out_u8(priv,
295 MESSAGE_REQUEST_BBREG,
296 0xfb,
297 calib_tx_iq);
298
299 vnt_control_out_u8(priv,
300 MESSAGE_REQUEST_BBREG,
301 0xfC,
302 calib_tx_dc);
303
304 vnt_control_out_u8(priv,
305 MESSAGE_REQUEST_BBREG,
306 0xfd,
307 calib_rx_iq);
308 } else {
309
310
311
312 vnt_control_out_u8(priv,
313 MESSAGE_REQUEST_BBREG,
314 0xff,
315 0x0);
316 }
317 }
318 }
319
320
321 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
322 ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
323
324
325 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
326 priv->current_net_addr);
327
328
329
330
331
332 if (priv->bb_type == BB_TYPE_11A)
333 priv->short_slot_time = true;
334 else
335 priv->short_slot_time = false;
336
337 vnt_set_short_slot_time(priv);
338
339 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
340
341 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
342 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
343 MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG, 1, &tmp);
344
345 if (status != STATUS_SUCCESS)
346 return false;
347
348 if ((tmp & GPIO3_DATA) == 0)
349 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
350 GPIO3_INTMD);
351 else
352 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
353 GPIO3_INTMD);
354 }
355
356 vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
357
358 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
359
360 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
361
362 vnt_radio_power_on(priv);
363
364 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
365
366 return true;
367}
368
369static void vnt_free_tx_bufs(struct vnt_private *priv)
370{
371 struct vnt_usb_send_context *tx_context;
372 int ii;
373
374 for (ii = 0; ii < priv->num_tx_context; ii++) {
375 tx_context = priv->tx_context[ii];
376
377 if (tx_context->urb) {
378 usb_kill_urb(tx_context->urb);
379 usb_free_urb(tx_context->urb);
380 }
381
382 kfree(tx_context);
383 }
384}
385
386static void vnt_free_rx_bufs(struct vnt_private *priv)
387{
388 struct vnt_rcb *rcb;
389 int ii;
390
391 for (ii = 0; ii < priv->num_rcb; ii++) {
392 rcb = priv->rcb[ii];
393 if (!rcb)
394 continue;
395
396
397 if (rcb->urb) {
398 usb_kill_urb(rcb->urb);
399 usb_free_urb(rcb->urb);
400 }
401
402
403 if (rcb->skb)
404 dev_kfree_skb(rcb->skb);
405
406 kfree(rcb);
407 }
408}
409
410static void usb_device_reset(struct vnt_private *priv)
411{
412 int status;
413
414 status = usb_reset_device(priv->usb);
415 if (status)
416 dev_warn(&priv->usb->dev,
417 "usb_device_reset fail status=%d\n", status);
418}
419
420static void vnt_free_int_bufs(struct vnt_private *priv)
421{
422 kfree(priv->int_buf.data_buf);
423}
424
425static bool vnt_alloc_bufs(struct vnt_private *priv)
426{
427 struct vnt_usb_send_context *tx_context;
428 struct vnt_rcb *rcb;
429 int ii;
430
431 for (ii = 0; ii < priv->num_tx_context; ii++) {
432 tx_context = kmalloc(sizeof(struct vnt_usb_send_context),
433 GFP_KERNEL);
434 if (!tx_context)
435 goto free_tx;
436
437 priv->tx_context[ii] = tx_context;
438 tx_context->priv = priv;
439 tx_context->pkt_no = ii;
440
441
442 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
443 if (!tx_context->urb) {
444 dev_err(&priv->usb->dev, "alloc tx urb failed\n");
445 goto free_tx;
446 }
447
448 tx_context->in_use = false;
449 }
450
451 for (ii = 0; ii < priv->num_rcb; ii++) {
452 priv->rcb[ii] = kzalloc(sizeof(struct vnt_rcb), GFP_KERNEL);
453 if (!priv->rcb[ii]) {
454 dev_err(&priv->usb->dev,
455 "failed to allocate rcb no %d\n", ii);
456 goto free_rx_tx;
457 }
458
459 rcb = priv->rcb[ii];
460
461 rcb->priv = priv;
462
463
464 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
465 if (!rcb->urb) {
466 dev_err(&priv->usb->dev, "Failed to alloc rx urb\n");
467 goto free_rx_tx;
468 }
469
470 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
471 if (!rcb->skb)
472 goto free_rx_tx;
473
474 rcb->in_use = false;
475
476
477 if (vnt_submit_rx_urb(priv, rcb))
478 goto free_rx_tx;
479 }
480
481 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
482 if (!priv->interrupt_urb) {
483 dev_err(&priv->usb->dev, "Failed to alloc int urb\n");
484 goto free_rx_tx;
485 }
486
487 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
488 if (!priv->int_buf.data_buf) {
489 usb_free_urb(priv->interrupt_urb);
490 goto free_rx_tx;
491 }
492
493 return true;
494
495free_rx_tx:
496 vnt_free_rx_bufs(priv);
497
498free_tx:
499 vnt_free_tx_bufs(priv);
500
501 return false;
502}
503
504static void vnt_tx_80211(struct ieee80211_hw *hw,
505 struct ieee80211_tx_control *control, struct sk_buff *skb)
506{
507 struct vnt_private *priv = hw->priv;
508
509 if (vnt_tx_packet(priv, skb))
510 ieee80211_free_txskb(hw, skb);
511}
512
513static int vnt_start(struct ieee80211_hw *hw)
514{
515 struct vnt_private *priv = hw->priv;
516
517 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
518
519 if (!vnt_alloc_bufs(priv)) {
520 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
521 return -ENOMEM;
522 }
523
524 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
525
526 if (vnt_init_registers(priv) == false) {
527 dev_dbg(&priv->usb->dev, " init register fail\n");
528 goto free_all;
529 }
530
531 priv->int_interval = 1;
532
533 vnt_int_start_interrupt(priv);
534
535 ieee80211_wake_queues(hw);
536
537 return 0;
538
539free_all:
540 vnt_free_rx_bufs(priv);
541 vnt_free_tx_bufs(priv);
542 vnt_free_int_bufs(priv);
543
544 usb_kill_urb(priv->interrupt_urb);
545 usb_free_urb(priv->interrupt_urb);
546
547 return -ENOMEM;
548}
549
550static void vnt_stop(struct ieee80211_hw *hw)
551{
552 struct vnt_private *priv = hw->priv;
553 int i;
554
555 if (!priv)
556 return;
557
558 for (i = 0; i < MAX_KEY_TABLE; i++)
559 vnt_mac_disable_keyentry(priv, i);
560
561
562 priv->key_entry_inuse = 0;
563
564 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
565 vnt_mac_shutdown(priv);
566
567 ieee80211_stop_queues(hw);
568
569 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
570
571 cancel_delayed_work_sync(&priv->run_command_work);
572
573 priv->cmd_running = false;
574
575 vnt_free_tx_bufs(priv);
576 vnt_free_rx_bufs(priv);
577 vnt_free_int_bufs(priv);
578
579 usb_kill_urb(priv->interrupt_urb);
580 usb_free_urb(priv->interrupt_urb);
581}
582
583static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
584{
585 struct vnt_private *priv = hw->priv;
586
587 priv->vif = vif;
588
589 switch (vif->type) {
590 case NL80211_IFTYPE_STATION:
591 break;
592 case NL80211_IFTYPE_ADHOC:
593 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
594
595 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
596
597 break;
598 case NL80211_IFTYPE_AP:
599 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
600
601 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
602
603 break;
604 default:
605 return -EOPNOTSUPP;
606 }
607
608 priv->op_mode = vif->type;
609
610 vnt_set_bss_mode(priv);
611
612
613 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
614
615 return 0;
616}
617
618static void vnt_remove_interface(struct ieee80211_hw *hw,
619 struct ieee80211_vif *vif)
620{
621 struct vnt_private *priv = hw->priv;
622
623 switch (vif->type) {
624 case NL80211_IFTYPE_STATION:
625 break;
626 case NL80211_IFTYPE_ADHOC:
627 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
628 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
629 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
630 break;
631 case NL80211_IFTYPE_AP:
632 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
633 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
634 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
635 break;
636 default:
637 break;
638 }
639
640 vnt_radio_power_off(priv);
641
642 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
643
644
645 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
646}
647
648static int vnt_config(struct ieee80211_hw *hw, u32 changed)
649{
650 struct vnt_private *priv = hw->priv;
651 struct ieee80211_conf *conf = &hw->conf;
652 u8 bb_type;
653
654 if (changed & IEEE80211_CONF_CHANGE_PS) {
655 if (conf->flags & IEEE80211_CONF_PS)
656 vnt_enable_power_saving(priv, conf->listen_interval);
657 else
658 vnt_disable_power_saving(priv);
659 }
660
661 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
662 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
663 vnt_set_channel(priv, conf->chandef.chan->hw_value);
664
665 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
666 bb_type = BB_TYPE_11A;
667 else
668 bb_type = BB_TYPE_11G;
669
670 if (priv->bb_type != bb_type) {
671 priv->bb_type = bb_type;
672
673 vnt_set_bss_mode(priv);
674 }
675 }
676
677 if (changed & IEEE80211_CONF_CHANGE_POWER) {
678 if (priv->bb_type == BB_TYPE_11B)
679 priv->current_rate = RATE_1M;
680 else
681 priv->current_rate = RATE_54M;
682
683 vnt_rf_setpower(priv, priv->current_rate,
684 conf->chandef.chan->hw_value);
685 }
686
687 return 0;
688}
689
690static void vnt_bss_info_changed(struct ieee80211_hw *hw,
691 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
692 u32 changed)
693{
694 struct vnt_private *priv = hw->priv;
695
696 priv->current_aid = conf->aid;
697
698 if (changed & BSS_CHANGED_BSSID && conf->bssid)
699 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
700
701
702 if (changed & BSS_CHANGED_BASIC_RATES) {
703 priv->basic_rates = conf->basic_rates;
704
705 vnt_update_top_rates(priv);
706
707 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
708 }
709
710 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
711 if (conf->use_short_preamble) {
712 vnt_mac_enable_barker_preamble_mode(priv);
713 priv->preamble_type = true;
714 } else {
715 vnt_mac_disable_barker_preamble_mode(priv);
716 priv->preamble_type = false;
717 }
718 }
719
720 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
721 if (conf->use_cts_prot)
722 vnt_mac_enable_protect_mode(priv);
723 else
724 vnt_mac_disable_protect_mode(priv);
725 }
726
727 if (changed & BSS_CHANGED_ERP_SLOT) {
728 if (conf->use_short_slot)
729 priv->short_slot_time = true;
730 else
731 priv->short_slot_time = false;
732
733 vnt_set_short_slot_time(priv);
734 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
735 vnt_update_pre_ed_threshold(priv, false);
736 }
737
738 if (changed & BSS_CHANGED_TXPOWER)
739 vnt_rf_setpower(priv, priv->current_rate,
740 conf->chandef.chan->hw_value);
741
742 if (changed & BSS_CHANGED_BEACON_ENABLED) {
743 dev_dbg(&priv->usb->dev,
744 "Beacon enable %d\n", conf->enable_beacon);
745
746 if (conf->enable_beacon) {
747 vnt_beacon_enable(priv, vif, conf);
748
749 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
750 } else {
751 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
752 }
753 }
754
755 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
756 priv->op_mode != NL80211_IFTYPE_AP) {
757 if (conf->assoc && conf->beacon_rate) {
758 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
759 TFTCTL_TSFCNTREN);
760
761 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
762 conf->sync_tsf, priv->current_tsf);
763
764 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
765
766 vnt_reset_next_tbtt(priv, conf->beacon_int);
767 } else {
768 vnt_clear_current_tsf(priv);
769
770 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
771 TFTCTL_TSFCNTREN);
772 }
773 }
774}
775
776static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
777 struct netdev_hw_addr_list *mc_list)
778{
779 struct vnt_private *priv = hw->priv;
780 struct netdev_hw_addr *ha;
781 u64 mc_filter = 0;
782 u32 bit_nr = 0;
783
784 netdev_hw_addr_list_for_each(ha, mc_list) {
785 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
786
787 mc_filter |= 1ULL << (bit_nr & 0x3f);
788 }
789
790 priv->mc_list_count = mc_list->count;
791
792 return mc_filter;
793}
794
795static void vnt_configure(struct ieee80211_hw *hw,
796 unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
797{
798 struct vnt_private *priv = hw->priv;
799 u8 rx_mode = 0;
800 int rc;
801
802 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
803
804 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
805 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
806
807 if (!rc)
808 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
809
810 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
811
812 if (changed_flags & FIF_ALLMULTI) {
813 if (*total_flags & FIF_ALLMULTI) {
814 if (priv->mc_list_count > 2)
815 vnt_mac_set_filter(priv, ~0);
816 else
817 vnt_mac_set_filter(priv, multicast);
818
819 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
820 } else {
821 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
822 }
823
824 }
825
826 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
827 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
828 rx_mode &= ~RCR_BSSID;
829 else
830 rx_mode |= RCR_BSSID;
831 }
832
833 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
834
835 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
836}
837
838static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
839 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
840 struct ieee80211_key_conf *key)
841{
842 struct vnt_private *priv = hw->priv;
843
844 switch (cmd) {
845 case SET_KEY:
846 if (vnt_set_keys(hw, sta, vif, key))
847 return -EOPNOTSUPP;
848 break;
849 case DISABLE_KEY:
850 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
851 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
852 default:
853 break;
854 }
855
856 return 0;
857}
858
859static void vnt_sw_scan_start(struct ieee80211_hw *hw,
860 struct ieee80211_vif *vif,
861 const u8 *addr)
862{
863 struct vnt_private *priv = hw->priv;
864
865 vnt_set_bss_mode(priv);
866
867 vnt_update_pre_ed_threshold(priv, true);
868}
869
870static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
871 struct ieee80211_vif *vif)
872{
873 struct vnt_private *priv = hw->priv;
874
875
876 vnt_update_pre_ed_threshold(priv, false);
877}
878
879static int vnt_get_stats(struct ieee80211_hw *hw,
880 struct ieee80211_low_level_stats *stats)
881{
882 struct vnt_private *priv = hw->priv;
883
884 memcpy(stats, &priv->low_stats, sizeof(*stats));
885
886 return 0;
887}
888
889static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
890{
891 struct vnt_private *priv = hw->priv;
892
893 return priv->current_tsf;
894}
895
896static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
897 u64 tsf)
898{
899 struct vnt_private *priv = hw->priv;
900
901 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
902}
903
904static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
905{
906 struct vnt_private *priv = hw->priv;
907
908 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
909
910 vnt_clear_current_tsf(priv);
911}
912
913static const struct ieee80211_ops vnt_mac_ops = {
914 .tx = vnt_tx_80211,
915 .start = vnt_start,
916 .stop = vnt_stop,
917 .add_interface = vnt_add_interface,
918 .remove_interface = vnt_remove_interface,
919 .config = vnt_config,
920 .bss_info_changed = vnt_bss_info_changed,
921 .prepare_multicast = vnt_prepare_multicast,
922 .configure_filter = vnt_configure,
923 .set_key = vnt_set_key,
924 .sw_scan_start = vnt_sw_scan_start,
925 .sw_scan_complete = vnt_sw_scan_complete,
926 .get_stats = vnt_get_stats,
927 .get_tsf = vnt_get_tsf,
928 .set_tsf = vnt_set_tsf,
929 .reset_tsf = vnt_reset_tsf,
930};
931
932int vnt_init(struct vnt_private *priv)
933{
934
935 if (!(vnt_init_registers(priv)))
936 return -EAGAIN;
937
938 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
939
940 vnt_init_bands(priv);
941
942 if (ieee80211_register_hw(priv->hw))
943 return -ENODEV;
944
945 priv->mac_hw = true;
946
947 vnt_radio_power_off(priv);
948
949 return 0;
950}
951
952static int
953vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
954{
955 struct usb_device *udev;
956 struct vnt_private *priv;
957 struct ieee80211_hw *hw;
958 struct wiphy *wiphy;
959 int rc = 0;
960
961 udev = usb_get_dev(interface_to_usbdev(intf));
962
963 dev_notice(&udev->dev, "%s Ver. %s\n",
964 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
965 dev_notice(&udev->dev,
966 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
967
968 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
969 if (!hw) {
970 dev_err(&udev->dev, "could not register ieee80211_hw\n");
971 rc = -ENOMEM;
972 goto err_nomem;
973 }
974
975 priv = hw->priv;
976 priv->hw = hw;
977 priv->usb = udev;
978
979 vnt_set_options(priv);
980
981 spin_lock_init(&priv->lock);
982 mutex_init(&priv->usb_lock);
983
984 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
985
986 usb_set_intfdata(intf, priv);
987
988 wiphy = priv->hw->wiphy;
989
990 wiphy->frag_threshold = FRAG_THRESH_DEF;
991 wiphy->rts_threshold = RTS_THRESH_DEF;
992 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
993 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
994
995 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
996 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
997 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
998 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
999 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1000
1001 priv->hw->max_signal = 100;
1002
1003 SET_IEEE80211_DEV(priv->hw, &intf->dev);
1004
1005 usb_device_reset(priv);
1006
1007 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1008 vnt_reset_command_timer(priv);
1009
1010 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1011
1012 return 0;
1013
1014err_nomem:
1015 usb_put_dev(udev);
1016
1017 return rc;
1018}
1019
1020static void vt6656_disconnect(struct usb_interface *intf)
1021{
1022 struct vnt_private *priv = usb_get_intfdata(intf);
1023
1024 if (!priv)
1025 return;
1026
1027 if (priv->mac_hw)
1028 ieee80211_unregister_hw(priv->hw);
1029
1030 usb_set_intfdata(intf, NULL);
1031 usb_put_dev(interface_to_usbdev(intf));
1032
1033 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1034
1035 ieee80211_free_hw(priv->hw);
1036}
1037
1038#ifdef CONFIG_PM
1039
1040static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1041{
1042 return 0;
1043}
1044
1045static int vt6656_resume(struct usb_interface *intf)
1046{
1047 return 0;
1048}
1049
1050#endif
1051
1052MODULE_DEVICE_TABLE(usb, vt6656_table);
1053
1054static struct usb_driver vt6656_driver = {
1055 .name = DEVICE_NAME,
1056 .probe = vt6656_probe,
1057 .disconnect = vt6656_disconnect,
1058 .id_table = vt6656_table,
1059#ifdef CONFIG_PM
1060 .suspend = vt6656_suspend,
1061 .resume = vt6656_resume,
1062#endif
1063};
1064
1065module_usb_driver(vt6656_driver);
1066
