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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 const 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, MESSAGE_TYPE_CARDINIT, 0, 0,
160 sizeof(struct vnt_cmd_card_init),
161 (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),
169 (u8 *)init_rsp);
170 if (status != STATUS_SUCCESS) {
171 dev_dbg(&priv->usb->dev,
172 "Cardinit request in status fail!\n");
173 return false;
174 }
175
176
177 status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
178 MESSAGE_REQUEST_MACREG, 1, &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 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
282 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
283 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
284 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
285
286
287
288 vnt_control_out_u8(priv,
289 MESSAGE_REQUEST_BBREG,
290 0xff,
291 0x03);
292
293 vnt_control_out_u8(priv,
294 MESSAGE_REQUEST_BBREG,
295 0xfb,
296 calib_tx_iq);
297
298 vnt_control_out_u8(priv,
299 MESSAGE_REQUEST_BBREG,
300 0xfC,
301 calib_tx_dc);
302
303 vnt_control_out_u8(priv,
304 MESSAGE_REQUEST_BBREG,
305 0xfd,
306 calib_rx_iq);
307 } else {
308
309
310
311 vnt_control_out_u8(priv,
312 MESSAGE_REQUEST_BBREG,
313 0xff,
314 0x0);
315 }
316 }
317 }
318
319
320 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
321 ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
322
323
324 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
325 priv->current_net_addr);
326
327
328
329
330
331 if (priv->bb_type == BB_TYPE_11A)
332 priv->short_slot_time = true;
333 else
334 priv->short_slot_time = false;
335
336 vnt_set_short_slot_time(priv);
337
338 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
339
340 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
341 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
342 MAC_REG_GPIOCTL1,
343 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 vnt_free_int_bufs(struct vnt_private *priv)
411{
412 kfree(priv->int_buf.data_buf);
413}
414
415static bool vnt_alloc_bufs(struct vnt_private *priv)
416{
417 struct vnt_usb_send_context *tx_context;
418 struct vnt_rcb *rcb;
419 int ii;
420
421 for (ii = 0; ii < priv->num_tx_context; ii++) {
422 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
423 if (!tx_context)
424 goto free_tx;
425
426 priv->tx_context[ii] = tx_context;
427 tx_context->priv = priv;
428 tx_context->pkt_no = ii;
429
430
431 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
432 if (!tx_context->urb)
433 goto free_tx;
434
435 tx_context->in_use = false;
436 }
437
438 for (ii = 0; ii < priv->num_rcb; ii++) {
439 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
440 if (!priv->rcb[ii]) {
441 dev_err(&priv->usb->dev,
442 "failed to allocate rcb no %d\n", ii);
443 goto free_rx_tx;
444 }
445
446 rcb = priv->rcb[ii];
447
448 rcb->priv = priv;
449
450
451 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
452 if (!rcb->urb)
453 goto free_rx_tx;
454
455 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
456 if (!rcb->skb)
457 goto free_rx_tx;
458
459 rcb->in_use = false;
460
461
462 if (vnt_submit_rx_urb(priv, rcb))
463 goto free_rx_tx;
464 }
465
466 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
467 if (!priv->interrupt_urb)
468 goto free_rx_tx;
469
470 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
471 if (!priv->int_buf.data_buf) {
472 usb_free_urb(priv->interrupt_urb);
473 goto free_rx_tx;
474 }
475
476 return true;
477
478free_rx_tx:
479 vnt_free_rx_bufs(priv);
480
481free_tx:
482 vnt_free_tx_bufs(priv);
483
484 return false;
485}
486
487static void vnt_tx_80211(struct ieee80211_hw *hw,
488 struct ieee80211_tx_control *control,
489 struct sk_buff *skb)
490{
491 struct vnt_private *priv = hw->priv;
492
493 if (vnt_tx_packet(priv, skb))
494 ieee80211_free_txskb(hw, skb);
495}
496
497static int vnt_start(struct ieee80211_hw *hw)
498{
499 struct vnt_private *priv = hw->priv;
500
501 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
502
503 if (!vnt_alloc_bufs(priv)) {
504 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
505 return -ENOMEM;
506 }
507
508 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
509
510 if (vnt_init_registers(priv) == false) {
511 dev_dbg(&priv->usb->dev, " init register fail\n");
512 goto free_all;
513 }
514
515 if (vnt_key_init_table(priv))
516 goto free_all;
517
518 priv->int_interval = 1;
519
520 vnt_int_start_interrupt(priv);
521
522 ieee80211_wake_queues(hw);
523
524 return 0;
525
526free_all:
527 vnt_free_rx_bufs(priv);
528 vnt_free_tx_bufs(priv);
529 vnt_free_int_bufs(priv);
530
531 usb_kill_urb(priv->interrupt_urb);
532 usb_free_urb(priv->interrupt_urb);
533
534 return -ENOMEM;
535}
536
537static void vnt_stop(struct ieee80211_hw *hw)
538{
539 struct vnt_private *priv = hw->priv;
540 int i;
541
542 if (!priv)
543 return;
544
545 for (i = 0; i < MAX_KEY_TABLE; i++)
546 vnt_mac_disable_keyentry(priv, i);
547
548
549 priv->key_entry_inuse = 0;
550
551 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
552 vnt_mac_shutdown(priv);
553
554 ieee80211_stop_queues(hw);
555
556 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
557
558 cancel_delayed_work_sync(&priv->run_command_work);
559
560 priv->cmd_running = false;
561
562 vnt_free_tx_bufs(priv);
563 vnt_free_rx_bufs(priv);
564 vnt_free_int_bufs(priv);
565
566 usb_kill_urb(priv->interrupt_urb);
567 usb_free_urb(priv->interrupt_urb);
568}
569
570static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
571{
572 struct vnt_private *priv = hw->priv;
573
574 priv->vif = vif;
575
576 switch (vif->type) {
577 case NL80211_IFTYPE_STATION:
578 break;
579 case NL80211_IFTYPE_ADHOC:
580 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
581
582 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
583
584 break;
585 case NL80211_IFTYPE_AP:
586 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
587
588 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
589
590 break;
591 default:
592 return -EOPNOTSUPP;
593 }
594
595 priv->op_mode = vif->type;
596
597 vnt_set_bss_mode(priv);
598
599
600 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
601
602 return 0;
603}
604
605static void vnt_remove_interface(struct ieee80211_hw *hw,
606 struct ieee80211_vif *vif)
607{
608 struct vnt_private *priv = hw->priv;
609
610 switch (vif->type) {
611 case NL80211_IFTYPE_STATION:
612 break;
613 case NL80211_IFTYPE_ADHOC:
614 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
615 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
616 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
617 break;
618 case NL80211_IFTYPE_AP:
619 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
620 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
621 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
622 break;
623 default:
624 break;
625 }
626
627 vnt_radio_power_off(priv);
628
629 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
630
631
632 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
633}
634
635static int vnt_config(struct ieee80211_hw *hw, u32 changed)
636{
637 struct vnt_private *priv = hw->priv;
638 struct ieee80211_conf *conf = &hw->conf;
639
640 if (changed & IEEE80211_CONF_CHANGE_PS) {
641 if (conf->flags & IEEE80211_CONF_PS)
642 vnt_enable_power_saving(priv, conf->listen_interval);
643 else
644 vnt_disable_power_saving(priv);
645 }
646
647 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
648 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
649 vnt_set_channel(priv, conf->chandef.chan->hw_value);
650
651 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
652 priv->bb_type = BB_TYPE_11A;
653 else
654 priv->bb_type = BB_TYPE_11G;
655 }
656
657 if (changed & IEEE80211_CONF_CHANGE_POWER) {
658 if (priv->bb_type == BB_TYPE_11B)
659 priv->current_rate = RATE_1M;
660 else
661 priv->current_rate = RATE_54M;
662
663 vnt_rf_setpower(priv, priv->current_rate,
664 conf->chandef.chan->hw_value);
665 }
666
667 return 0;
668}
669
670static void vnt_bss_info_changed(struct ieee80211_hw *hw,
671 struct ieee80211_vif *vif,
672 struct ieee80211_bss_conf *conf, u32 changed)
673{
674 struct vnt_private *priv = hw->priv;
675
676 priv->current_aid = conf->aid;
677
678 if (changed & BSS_CHANGED_BSSID && conf->bssid)
679 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
680
681 if (changed & BSS_CHANGED_BASIC_RATES) {
682 priv->basic_rates = conf->basic_rates;
683
684 vnt_update_top_rates(priv);
685 vnt_set_bss_mode(priv);
686
687 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
688 }
689
690 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
691 if (conf->use_short_preamble) {
692 vnt_mac_enable_barker_preamble_mode(priv);
693 priv->preamble_type = true;
694 } else {
695 vnt_mac_disable_barker_preamble_mode(priv);
696 priv->preamble_type = false;
697 }
698 }
699
700 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
701 if (conf->use_cts_prot)
702 vnt_mac_enable_protect_mode(priv);
703 else
704 vnt_mac_disable_protect_mode(priv);
705 }
706
707 if (changed & BSS_CHANGED_ERP_SLOT) {
708 if (conf->use_short_slot)
709 priv->short_slot_time = true;
710 else
711 priv->short_slot_time = false;
712
713 vnt_set_short_slot_time(priv);
714 vnt_update_ifs(priv);
715 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
716 vnt_update_pre_ed_threshold(priv, false);
717 }
718
719 if (changed & BSS_CHANGED_TXPOWER)
720 vnt_rf_setpower(priv, priv->current_rate,
721 conf->chandef.chan->hw_value);
722
723 if (changed & BSS_CHANGED_BEACON_ENABLED) {
724 dev_dbg(&priv->usb->dev,
725 "Beacon enable %d\n", conf->enable_beacon);
726
727 if (conf->enable_beacon) {
728 vnt_beacon_enable(priv, vif, conf);
729
730 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
731 } else {
732 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
733 }
734 }
735
736 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
737 priv->op_mode != NL80211_IFTYPE_AP) {
738 if (conf->assoc && conf->beacon_rate) {
739 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
740 TFTCTL_TSFCNTREN);
741
742 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
743 conf->sync_tsf, priv->current_tsf);
744
745 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
746
747 vnt_reset_next_tbtt(priv, conf->beacon_int);
748 } else {
749 vnt_clear_current_tsf(priv);
750
751 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
752 TFTCTL_TSFCNTREN);
753 }
754 }
755}
756
757static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
758 struct netdev_hw_addr_list *mc_list)
759{
760 struct vnt_private *priv = hw->priv;
761 struct netdev_hw_addr *ha;
762 u64 mc_filter = 0;
763 u32 bit_nr = 0;
764
765 netdev_hw_addr_list_for_each(ha, mc_list) {
766 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
767
768 mc_filter |= 1ULL << (bit_nr & 0x3f);
769 }
770
771 priv->mc_list_count = mc_list->count;
772
773 return mc_filter;
774}
775
776static void vnt_configure(struct ieee80211_hw *hw,
777 unsigned int changed_flags,
778 unsigned int *total_flags, u64 multicast)
779{
780 struct vnt_private *priv = hw->priv;
781 u8 rx_mode = 0;
782 int rc;
783
784 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
785
786 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
787 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
788
789 if (!rc)
790 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
791
792 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
793
794 if (changed_flags & FIF_ALLMULTI) {
795 if (*total_flags & FIF_ALLMULTI) {
796 if (priv->mc_list_count > 2)
797 vnt_mac_set_filter(priv, ~0);
798 else
799 vnt_mac_set_filter(priv, multicast);
800
801 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
802 } else {
803 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
804 }
805 }
806
807 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
808 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
809 rx_mode &= ~RCR_BSSID;
810 else
811 rx_mode |= RCR_BSSID;
812 }
813
814 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
815
816 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
817}
818
819static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
820 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
821 struct ieee80211_key_conf *key)
822{
823 struct vnt_private *priv = hw->priv;
824
825 switch (cmd) {
826 case SET_KEY:
827 if (vnt_set_keys(hw, sta, vif, key))
828 return -EOPNOTSUPP;
829 break;
830 case DISABLE_KEY:
831 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
832 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
833 default:
834 break;
835 }
836
837 return 0;
838}
839
840static void vnt_sw_scan_start(struct ieee80211_hw *hw,
841 struct ieee80211_vif *vif,
842 const u8 *addr)
843{
844 struct vnt_private *priv = hw->priv;
845
846
847 vnt_update_pre_ed_threshold(priv, true);
848}
849
850static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
851 struct ieee80211_vif *vif)
852{
853 struct vnt_private *priv = hw->priv;
854
855
856 vnt_update_pre_ed_threshold(priv, false);
857}
858
859static int vnt_get_stats(struct ieee80211_hw *hw,
860 struct ieee80211_low_level_stats *stats)
861{
862 struct vnt_private *priv = hw->priv;
863
864 memcpy(stats, &priv->low_stats, sizeof(*stats));
865
866 return 0;
867}
868
869static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
870{
871 struct vnt_private *priv = hw->priv;
872
873 return priv->current_tsf;
874}
875
876static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
877 u64 tsf)
878{
879 struct vnt_private *priv = hw->priv;
880
881 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
882}
883
884static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
885{
886 struct vnt_private *priv = hw->priv;
887
888 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
889
890 vnt_clear_current_tsf(priv);
891}
892
893static const struct ieee80211_ops vnt_mac_ops = {
894 .tx = vnt_tx_80211,
895 .start = vnt_start,
896 .stop = vnt_stop,
897 .add_interface = vnt_add_interface,
898 .remove_interface = vnt_remove_interface,
899 .config = vnt_config,
900 .bss_info_changed = vnt_bss_info_changed,
901 .prepare_multicast = vnt_prepare_multicast,
902 .configure_filter = vnt_configure,
903 .set_key = vnt_set_key,
904 .sw_scan_start = vnt_sw_scan_start,
905 .sw_scan_complete = vnt_sw_scan_complete,
906 .get_stats = vnt_get_stats,
907 .get_tsf = vnt_get_tsf,
908 .set_tsf = vnt_set_tsf,
909 .reset_tsf = vnt_reset_tsf,
910};
911
912int vnt_init(struct vnt_private *priv)
913{
914 if (!(vnt_init_registers(priv)))
915 return -EAGAIN;
916
917 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
918
919 vnt_init_bands(priv);
920
921 if (ieee80211_register_hw(priv->hw))
922 return -ENODEV;
923
924 priv->mac_hw = true;
925
926 vnt_radio_power_off(priv);
927
928 return 0;
929}
930
931static int
932vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
933{
934 struct usb_device *udev;
935 struct vnt_private *priv;
936 struct ieee80211_hw *hw;
937 struct wiphy *wiphy;
938 int rc = 0;
939
940 udev = usb_get_dev(interface_to_usbdev(intf));
941
942 dev_notice(&udev->dev, "%s Ver. %s\n",
943 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
944 dev_notice(&udev->dev,
945 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
946
947 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
948 if (!hw) {
949 dev_err(&udev->dev, "could not register ieee80211_hw\n");
950 rc = -ENOMEM;
951 goto err_nomem;
952 }
953
954 priv = hw->priv;
955 priv->hw = hw;
956 priv->usb = udev;
957
958 vnt_set_options(priv);
959
960 spin_lock_init(&priv->lock);
961 mutex_init(&priv->usb_lock);
962
963 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
964
965 usb_set_intfdata(intf, priv);
966
967 wiphy = priv->hw->wiphy;
968
969 wiphy->frag_threshold = FRAG_THRESH_DEF;
970 wiphy->rts_threshold = RTS_THRESH_DEF;
971 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
972 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
973
974 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
975 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
976 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
977 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
978 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
979
980 priv->hw->max_signal = 100;
981
982 SET_IEEE80211_DEV(priv->hw, &intf->dev);
983
984 rc = usb_reset_device(priv->usb);
985 if (rc)
986 dev_warn(&priv->usb->dev,
987 "%s reset fail status=%d\n", __func__, rc);
988
989 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
990 vnt_reset_command_timer(priv);
991
992 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
993
994 return 0;
995
996err_nomem:
997 usb_put_dev(udev);
998
999 return rc;
1000}
1001
1002static void vt6656_disconnect(struct usb_interface *intf)
1003{
1004 struct vnt_private *priv = usb_get_intfdata(intf);
1005
1006 if (!priv)
1007 return;
1008
1009 if (priv->mac_hw)
1010 ieee80211_unregister_hw(priv->hw);
1011
1012 usb_set_intfdata(intf, NULL);
1013 usb_put_dev(interface_to_usbdev(intf));
1014
1015 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1016
1017 ieee80211_free_hw(priv->hw);
1018}
1019
1020#ifdef CONFIG_PM
1021
1022static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1023{
1024 return 0;
1025}
1026
1027static int vt6656_resume(struct usb_interface *intf)
1028{
1029 return 0;
1030}
1031
1032#endif
1033
1034MODULE_DEVICE_TABLE(usb, vt6656_table);
1035
1036static struct usb_driver vt6656_driver = {
1037 .name = DEVICE_NAME,
1038 .probe = vt6656_probe,
1039 .disconnect = vt6656_disconnect,
1040 .id_table = vt6656_table,
1041#ifdef CONFIG_PM
1042 .suspend = vt6656_suspend,
1043 .resume = vt6656_resume,
1044#endif
1045};
1046
1047module_usb_driver(vt6656_driver);
1048
