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22#undef __NO_VERSION__
23
24#include <linux/etherdevice.h>
25#include <linux/file.h>
26#include "device.h"
27#include "card.h"
28#include "baseband.h"
29#include "mac.h"
30#include "power.h"
31#include "wcmd.h"
32#include "rxtx.h"
33#include "dpc.h"
34#include "rf.h"
35#include "firmware.h"
36#include "usbpipe.h"
37#include "channel.h"
38#include "int.h"
39
40
41
42
43
44
45#define DRIVER_AUTHOR \
46 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
47MODULE_AUTHOR(DRIVER_AUTHOR);
48MODULE_LICENSE("GPL");
49MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
50
51#define RX_DESC_DEF0 64
52static int vnt_rx_buffers = RX_DESC_DEF0;
53module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
54MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
55
56#define TX_DESC_DEF0 64
57static int vnt_tx_buffers = TX_DESC_DEF0;
58module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
59MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
60
61#define RTS_THRESH_DEF 2347
62#define FRAG_THRESH_DEF 2346
63#define SHORT_RETRY_DEF 8
64#define LONG_RETRY_DEF 4
65
66
67
68
69
70
71
72#define BBP_TYPE_DEF 2
73
74
75
76
77
78static const struct usb_device_id vt6656_table[] = {
79 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
80 {}
81};
82
83static void vnt_set_options(struct vnt_private *priv)
84{
85
86 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
87 priv->num_tx_context = TX_DESC_DEF0;
88 else
89 priv->num_tx_context = vnt_tx_buffers;
90
91
92 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
93 priv->num_rcb = RX_DESC_DEF0;
94 else
95 priv->num_rcb = vnt_rx_buffers;
96
97 priv->short_retry_limit = SHORT_RETRY_DEF;
98 priv->long_retry_limit = LONG_RETRY_DEF;
99 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
100 priv->bb_type = BBP_TYPE_DEF;
101 priv->packet_type = priv->bb_type;
102 priv->auto_fb_ctrl = AUTO_FB_0;
103 priv->preamble_type = 0;
104 priv->exist_sw_net_addr = false;
105}
106
107
108
109
110static int vnt_init_registers(struct vnt_private *priv)
111{
112 struct vnt_cmd_card_init *init_cmd = &priv->init_command;
113 struct vnt_rsp_card_init *init_rsp = &priv->init_response;
114 u8 antenna;
115 int ii;
116 int status = STATUS_SUCCESS;
117 u8 tmp;
118 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
119
120 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
121 DEVICE_INIT_COLD, priv->packet_type);
122
123 if (!vnt_check_firmware_version(priv)) {
124 if (vnt_download_firmware(priv) == true) {
125 if (vnt_firmware_branch_to_sram(priv) == false) {
126 dev_dbg(&priv->usb->dev,
127 " vnt_firmware_branch_to_sram fail\n");
128 return false;
129 }
130 } else {
131 dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
132 return false;
133 }
134 }
135
136 if (!vnt_vt3184_init(priv)) {
137 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
138 return false;
139 }
140
141 init_cmd->init_class = DEVICE_INIT_COLD;
142 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
143 for (ii = 0; ii < 6; ii++)
144 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
145 init_cmd->short_retry_limit = priv->short_retry_limit;
146 init_cmd->long_retry_limit = priv->long_retry_limit;
147
148
149 status = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
150 sizeof(struct vnt_cmd_card_init),
151 (u8 *)init_cmd);
152 if (status != STATUS_SUCCESS) {
153 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
154 return false;
155 }
156
157 status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
158 sizeof(struct vnt_rsp_card_init),
159 (u8 *)init_rsp);
160 if (status != STATUS_SUCCESS) {
161 dev_dbg(&priv->usb->dev,
162 "Cardinit request in status fail!\n");
163 return false;
164 }
165
166
167 status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
168 MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
169 if (status != STATUS_SUCCESS)
170 return false;
171
172
173
174 priv->top_ofdm_basic_rate = RATE_24M;
175 priv->top_cck_basic_rate = RATE_1M;
176
177
178 priv->power = 0xFF;
179
180 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
181 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
182
183 for (ii = 0; ii < 14; ii++) {
184 priv->cck_pwr_tbl[ii] =
185 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
186 if (priv->cck_pwr_tbl[ii] == 0)
187 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
188
189 priv->ofdm_pwr_tbl[ii] =
190 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
191 if (priv->ofdm_pwr_tbl[ii] == 0)
192 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
193 }
194
195
196
197
198
199 for (ii = 11; ii < 14; ii++) {
200 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
201 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
202 }
203
204 priv->ofdm_pwr_a = 0x34;
205
206
207 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
208 priv->ofdm_a_pwr_tbl[ii] =
209 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
210
211 if (priv->ofdm_a_pwr_tbl[ii] == 0)
212 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
213 }
214
215 antenna = priv->eeprom[EEP_OFS_ANTENNA];
216
217 if (antenna & EEP_ANTINV)
218 priv->tx_rx_ant_inv = true;
219 else
220 priv->tx_rx_ant_inv = false;
221
222 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
223
224 if (antenna == 0)
225 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
226
227 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
228 priv->tx_antenna_mode = ANT_B;
229 priv->rx_antenna_sel = 1;
230
231 if (priv->tx_rx_ant_inv)
232 priv->rx_antenna_mode = ANT_A;
233 else
234 priv->rx_antenna_mode = ANT_B;
235 } else {
236 priv->rx_antenna_sel = 0;
237
238 if (antenna & EEP_ANTENNA_AUX) {
239 priv->tx_antenna_mode = ANT_A;
240
241 if (priv->tx_rx_ant_inv)
242 priv->rx_antenna_mode = ANT_B;
243 else
244 priv->rx_antenna_mode = ANT_A;
245 } else {
246 priv->tx_antenna_mode = ANT_B;
247
248 if (priv->tx_rx_ant_inv)
249 priv->rx_antenna_mode = ANT_A;
250 else
251 priv->rx_antenna_mode = ANT_B;
252 }
253 }
254
255
256 vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
257
258
259 priv->auto_fb_ctrl = AUTO_FB_0;
260
261
262 priv->bb_type = BB_TYPE_11G;
263
264
265 priv->rf_type = init_rsp->rf_type;
266
267
268 if (priv->rf_type == RF_VT3226D0) {
269 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
270 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
271 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
272 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
273 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
274 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
275
276
277
278 vnt_control_out_u8(priv,
279 MESSAGE_REQUEST_BBREG,
280 0xff,
281 0x03);
282
283 vnt_control_out_u8(priv,
284 MESSAGE_REQUEST_BBREG,
285 0xfb,
286 calib_tx_iq);
287
288 vnt_control_out_u8(priv,
289 MESSAGE_REQUEST_BBREG,
290 0xfC,
291 calib_tx_dc);
292
293 vnt_control_out_u8(priv,
294 MESSAGE_REQUEST_BBREG,
295 0xfd,
296 calib_rx_iq);
297 } else {
298
299
300
301 vnt_control_out_u8(priv,
302 MESSAGE_REQUEST_BBREG,
303 0xff,
304 0x0);
305 }
306 }
307 }
308
309
310 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
311 ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
312
313
314 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
315 priv->current_net_addr);
316
317
318
319
320
321 if (priv->bb_type == BB_TYPE_11A)
322 priv->short_slot_time = true;
323 else
324 priv->short_slot_time = false;
325
326 vnt_set_short_slot_time(priv);
327
328 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
329
330 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
331 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
332 MAC_REG_GPIOCTL1,
333 MESSAGE_REQUEST_MACREG, 1, &tmp);
334
335 if (status != STATUS_SUCCESS)
336 return false;
337
338 if ((tmp & GPIO3_DATA) == 0)
339 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
340 GPIO3_INTMD);
341 else
342 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
343 GPIO3_INTMD);
344 }
345
346 vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
347
348 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
349
350 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
351
352 vnt_radio_power_on(priv);
353
354 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
355
356 return true;
357}
358
359static void vnt_free_tx_bufs(struct vnt_private *priv)
360{
361 struct vnt_usb_send_context *tx_context;
362 int ii;
363
364 for (ii = 0; ii < priv->num_tx_context; ii++) {
365 tx_context = priv->tx_context[ii];
366
367 if (tx_context->urb) {
368 usb_kill_urb(tx_context->urb);
369 usb_free_urb(tx_context->urb);
370 }
371
372 kfree(tx_context);
373 }
374}
375
376static void vnt_free_rx_bufs(struct vnt_private *priv)
377{
378 struct vnt_rcb *rcb;
379 int ii;
380
381 for (ii = 0; ii < priv->num_rcb; ii++) {
382 rcb = priv->rcb[ii];
383 if (!rcb)
384 continue;
385
386
387 if (rcb->urb) {
388 usb_kill_urb(rcb->urb);
389 usb_free_urb(rcb->urb);
390 }
391
392
393 if (rcb->skb)
394 dev_kfree_skb(rcb->skb);
395
396 kfree(rcb);
397 }
398}
399
400static void vnt_free_int_bufs(struct vnt_private *priv)
401{
402 kfree(priv->int_buf.data_buf);
403}
404
405static bool vnt_alloc_bufs(struct vnt_private *priv)
406{
407 struct vnt_usb_send_context *tx_context;
408 struct vnt_rcb *rcb;
409 int ii;
410
411 for (ii = 0; ii < priv->num_tx_context; ii++) {
412 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
413 if (!tx_context)
414 goto free_tx;
415
416 priv->tx_context[ii] = tx_context;
417 tx_context->priv = priv;
418 tx_context->pkt_no = ii;
419
420
421 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
422 if (!tx_context->urb)
423 goto free_tx;
424
425 tx_context->in_use = false;
426 }
427
428 for (ii = 0; ii < priv->num_rcb; ii++) {
429 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
430 if (!priv->rcb[ii])
431 goto free_rx_tx;
432
433 rcb = priv->rcb[ii];
434
435 rcb->priv = priv;
436
437
438 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
439 if (!rcb->urb)
440 goto free_rx_tx;
441
442 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
443 if (!rcb->skb)
444 goto free_rx_tx;
445
446 rcb->in_use = false;
447
448
449 if (vnt_submit_rx_urb(priv, rcb))
450 goto free_rx_tx;
451 }
452
453 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
454 if (!priv->interrupt_urb)
455 goto free_rx_tx;
456
457 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
458 if (!priv->int_buf.data_buf) {
459 usb_free_urb(priv->interrupt_urb);
460 goto free_rx_tx;
461 }
462
463 return true;
464
465free_rx_tx:
466 vnt_free_rx_bufs(priv);
467
468free_tx:
469 vnt_free_tx_bufs(priv);
470
471 return false;
472}
473
474static void vnt_tx_80211(struct ieee80211_hw *hw,
475 struct ieee80211_tx_control *control,
476 struct sk_buff *skb)
477{
478 struct vnt_private *priv = hw->priv;
479
480 if (vnt_tx_packet(priv, skb))
481 ieee80211_free_txskb(hw, skb);
482}
483
484static int vnt_start(struct ieee80211_hw *hw)
485{
486 struct vnt_private *priv = hw->priv;
487
488 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
489
490 if (!vnt_alloc_bufs(priv)) {
491 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
492 return -ENOMEM;
493 }
494
495 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
496
497 if (vnt_init_registers(priv) == false) {
498 dev_dbg(&priv->usb->dev, " init register fail\n");
499 goto free_all;
500 }
501
502 if (vnt_key_init_table(priv))
503 goto free_all;
504
505 priv->int_interval = 1;
506
507 vnt_int_start_interrupt(priv);
508
509 ieee80211_wake_queues(hw);
510
511 return 0;
512
513free_all:
514 vnt_free_rx_bufs(priv);
515 vnt_free_tx_bufs(priv);
516 vnt_free_int_bufs(priv);
517
518 usb_kill_urb(priv->interrupt_urb);
519 usb_free_urb(priv->interrupt_urb);
520
521 return -ENOMEM;
522}
523
524static void vnt_stop(struct ieee80211_hw *hw)
525{
526 struct vnt_private *priv = hw->priv;
527 int i;
528
529 if (!priv)
530 return;
531
532 for (i = 0; i < MAX_KEY_TABLE; i++)
533 vnt_mac_disable_keyentry(priv, i);
534
535
536 priv->key_entry_inuse = 0;
537
538 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
539 vnt_mac_shutdown(priv);
540
541 ieee80211_stop_queues(hw);
542
543 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
544
545 cancel_delayed_work_sync(&priv->run_command_work);
546
547 priv->cmd_running = false;
548
549 vnt_free_tx_bufs(priv);
550 vnt_free_rx_bufs(priv);
551 vnt_free_int_bufs(priv);
552
553 usb_kill_urb(priv->interrupt_urb);
554 usb_free_urb(priv->interrupt_urb);
555}
556
557static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
558{
559 struct vnt_private *priv = hw->priv;
560
561 priv->vif = vif;
562
563 switch (vif->type) {
564 case NL80211_IFTYPE_STATION:
565 break;
566 case NL80211_IFTYPE_ADHOC:
567 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
568
569 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
570
571 break;
572 case NL80211_IFTYPE_AP:
573 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
574
575 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
576
577 break;
578 default:
579 return -EOPNOTSUPP;
580 }
581
582 priv->op_mode = vif->type;
583
584 vnt_set_bss_mode(priv);
585
586
587 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
588
589 return 0;
590}
591
592static void vnt_remove_interface(struct ieee80211_hw *hw,
593 struct ieee80211_vif *vif)
594{
595 struct vnt_private *priv = hw->priv;
596
597 switch (vif->type) {
598 case NL80211_IFTYPE_STATION:
599 break;
600 case NL80211_IFTYPE_ADHOC:
601 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
602 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
603 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
604 break;
605 case NL80211_IFTYPE_AP:
606 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
607 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
608 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
609 break;
610 default:
611 break;
612 }
613
614 vnt_radio_power_off(priv);
615
616 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
617
618
619 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
620}
621
622static int vnt_config(struct ieee80211_hw *hw, u32 changed)
623{
624 struct vnt_private *priv = hw->priv;
625 struct ieee80211_conf *conf = &hw->conf;
626
627 if (changed & IEEE80211_CONF_CHANGE_PS) {
628 if (conf->flags & IEEE80211_CONF_PS)
629 vnt_enable_power_saving(priv, conf->listen_interval);
630 else
631 vnt_disable_power_saving(priv);
632 }
633
634 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
635 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
636 vnt_set_channel(priv, conf->chandef.chan->hw_value);
637
638 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
639 priv->bb_type = BB_TYPE_11A;
640 else
641 priv->bb_type = BB_TYPE_11G;
642 }
643
644 if (changed & IEEE80211_CONF_CHANGE_POWER) {
645 if (priv->bb_type == BB_TYPE_11B)
646 priv->current_rate = RATE_1M;
647 else
648 priv->current_rate = RATE_54M;
649
650 vnt_rf_setpower(priv, priv->current_rate,
651 conf->chandef.chan->hw_value);
652 }
653
654 return 0;
655}
656
657static void vnt_bss_info_changed(struct ieee80211_hw *hw,
658 struct ieee80211_vif *vif,
659 struct ieee80211_bss_conf *conf, u32 changed)
660{
661 struct vnt_private *priv = hw->priv;
662
663 priv->current_aid = conf->aid;
664
665 if (changed & BSS_CHANGED_BSSID && conf->bssid)
666 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
667
668 if (changed & BSS_CHANGED_BASIC_RATES) {
669 priv->basic_rates = conf->basic_rates;
670
671 vnt_update_top_rates(priv);
672 vnt_set_bss_mode(priv);
673
674 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
675 }
676
677 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
678 if (conf->use_short_preamble) {
679 vnt_mac_enable_barker_preamble_mode(priv);
680 priv->preamble_type = true;
681 } else {
682 vnt_mac_disable_barker_preamble_mode(priv);
683 priv->preamble_type = false;
684 }
685 }
686
687 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
688 if (conf->use_cts_prot)
689 vnt_mac_enable_protect_mode(priv);
690 else
691 vnt_mac_disable_protect_mode(priv);
692 }
693
694 if (changed & BSS_CHANGED_ERP_SLOT) {
695 if (conf->use_short_slot)
696 priv->short_slot_time = true;
697 else
698 priv->short_slot_time = false;
699
700 vnt_set_short_slot_time(priv);
701 vnt_update_ifs(priv);
702 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
703 vnt_update_pre_ed_threshold(priv, false);
704 }
705
706 if (changed & BSS_CHANGED_TXPOWER)
707 vnt_rf_setpower(priv, priv->current_rate,
708 conf->chandef.chan->hw_value);
709
710 if (changed & BSS_CHANGED_BEACON_ENABLED) {
711 dev_dbg(&priv->usb->dev,
712 "Beacon enable %d\n", conf->enable_beacon);
713
714 if (conf->enable_beacon) {
715 vnt_beacon_enable(priv, vif, conf);
716
717 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
718 } else {
719 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
720 }
721 }
722
723 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
724 priv->op_mode != NL80211_IFTYPE_AP) {
725 if (conf->assoc && conf->beacon_rate) {
726 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
727 TFTCTL_TSFCNTREN);
728
729 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
730 conf->sync_tsf, priv->current_tsf);
731
732 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
733
734 vnt_reset_next_tbtt(priv, conf->beacon_int);
735 } else {
736 vnt_clear_current_tsf(priv);
737
738 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
739 TFTCTL_TSFCNTREN);
740 }
741 }
742}
743
744static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
745 struct netdev_hw_addr_list *mc_list)
746{
747 struct vnt_private *priv = hw->priv;
748 struct netdev_hw_addr *ha;
749 u64 mc_filter = 0;
750 u32 bit_nr = 0;
751
752 netdev_hw_addr_list_for_each(ha, mc_list) {
753 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
754
755 mc_filter |= 1ULL << (bit_nr & 0x3f);
756 }
757
758 priv->mc_list_count = mc_list->count;
759
760 return mc_filter;
761}
762
763static void vnt_configure(struct ieee80211_hw *hw,
764 unsigned int changed_flags,
765 unsigned int *total_flags, u64 multicast)
766{
767 struct vnt_private *priv = hw->priv;
768 u8 rx_mode = 0;
769 int rc;
770
771 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
772
773 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
774 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
775
776 if (!rc)
777 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
778
779 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
780
781 if (changed_flags & FIF_ALLMULTI) {
782 if (*total_flags & FIF_ALLMULTI) {
783 if (priv->mc_list_count > 2)
784 vnt_mac_set_filter(priv, ~0);
785 else
786 vnt_mac_set_filter(priv, multicast);
787
788 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
789 } else {
790 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
791 }
792 }
793
794 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
795 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
796 rx_mode &= ~RCR_BSSID;
797 else
798 rx_mode |= RCR_BSSID;
799 }
800
801 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
802
803 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
804}
805
806static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
807 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
808 struct ieee80211_key_conf *key)
809{
810 struct vnt_private *priv = hw->priv;
811
812 switch (cmd) {
813 case SET_KEY:
814 if (vnt_set_keys(hw, sta, vif, key))
815 return -EOPNOTSUPP;
816 break;
817 case DISABLE_KEY:
818 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
819 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
820 default:
821 break;
822 }
823
824 return 0;
825}
826
827static void vnt_sw_scan_start(struct ieee80211_hw *hw,
828 struct ieee80211_vif *vif,
829 const u8 *addr)
830{
831 struct vnt_private *priv = hw->priv;
832
833
834 vnt_update_pre_ed_threshold(priv, true);
835}
836
837static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
838 struct ieee80211_vif *vif)
839{
840 struct vnt_private *priv = hw->priv;
841
842
843 vnt_update_pre_ed_threshold(priv, false);
844}
845
846static int vnt_get_stats(struct ieee80211_hw *hw,
847 struct ieee80211_low_level_stats *stats)
848{
849 struct vnt_private *priv = hw->priv;
850
851 memcpy(stats, &priv->low_stats, sizeof(*stats));
852
853 return 0;
854}
855
856static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
857{
858 struct vnt_private *priv = hw->priv;
859
860 return priv->current_tsf;
861}
862
863static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
864 u64 tsf)
865{
866 struct vnt_private *priv = hw->priv;
867
868 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
869}
870
871static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
872{
873 struct vnt_private *priv = hw->priv;
874
875 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
876
877 vnt_clear_current_tsf(priv);
878}
879
880static const struct ieee80211_ops vnt_mac_ops = {
881 .tx = vnt_tx_80211,
882 .start = vnt_start,
883 .stop = vnt_stop,
884 .add_interface = vnt_add_interface,
885 .remove_interface = vnt_remove_interface,
886 .config = vnt_config,
887 .bss_info_changed = vnt_bss_info_changed,
888 .prepare_multicast = vnt_prepare_multicast,
889 .configure_filter = vnt_configure,
890 .set_key = vnt_set_key,
891 .sw_scan_start = vnt_sw_scan_start,
892 .sw_scan_complete = vnt_sw_scan_complete,
893 .get_stats = vnt_get_stats,
894 .get_tsf = vnt_get_tsf,
895 .set_tsf = vnt_set_tsf,
896 .reset_tsf = vnt_reset_tsf,
897};
898
899int vnt_init(struct vnt_private *priv)
900{
901 if (!(vnt_init_registers(priv)))
902 return -EAGAIN;
903
904 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
905
906 vnt_init_bands(priv);
907
908 if (ieee80211_register_hw(priv->hw))
909 return -ENODEV;
910
911 priv->mac_hw = true;
912
913 vnt_radio_power_off(priv);
914
915 return 0;
916}
917
918static int
919vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
920{
921 struct usb_device *udev;
922 struct vnt_private *priv;
923 struct ieee80211_hw *hw;
924 struct wiphy *wiphy;
925 int rc = 0;
926
927 udev = usb_get_dev(interface_to_usbdev(intf));
928
929 dev_notice(&udev->dev, "%s Ver. %s\n",
930 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
931 dev_notice(&udev->dev,
932 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
933
934 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
935 if (!hw) {
936 dev_err(&udev->dev, "could not register ieee80211_hw\n");
937 rc = -ENOMEM;
938 goto err_nomem;
939 }
940
941 priv = hw->priv;
942 priv->hw = hw;
943 priv->usb = udev;
944
945 vnt_set_options(priv);
946
947 spin_lock_init(&priv->lock);
948 mutex_init(&priv->usb_lock);
949
950 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
951
952 usb_set_intfdata(intf, priv);
953
954 wiphy = priv->hw->wiphy;
955
956 wiphy->frag_threshold = FRAG_THRESH_DEF;
957 wiphy->rts_threshold = RTS_THRESH_DEF;
958 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
959 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
960
961 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
962 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
963 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
964 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
965 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
966
967 priv->hw->max_signal = 100;
968
969 SET_IEEE80211_DEV(priv->hw, &intf->dev);
970
971 rc = usb_reset_device(priv->usb);
972 if (rc)
973 dev_warn(&priv->usb->dev,
974 "%s reset fail status=%d\n", __func__, rc);
975
976 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
977 vnt_reset_command_timer(priv);
978
979 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
980
981 return 0;
982
983err_nomem:
984 usb_put_dev(udev);
985
986 return rc;
987}
988
989static void vt6656_disconnect(struct usb_interface *intf)
990{
991 struct vnt_private *priv = usb_get_intfdata(intf);
992
993 if (!priv)
994 return;
995
996 if (priv->mac_hw)
997 ieee80211_unregister_hw(priv->hw);
998
999 usb_set_intfdata(intf, NULL);
1000 usb_put_dev(interface_to_usbdev(intf));
1001
1002 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1003
1004 ieee80211_free_hw(priv->hw);
1005}
1006
1007#ifdef CONFIG_PM
1008
1009static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1010{
1011 return 0;
1012}
1013
1014static int vt6656_resume(struct usb_interface *intf)
1015{
1016 return 0;
1017}
1018
1019#endif
1020
1021MODULE_DEVICE_TABLE(usb, vt6656_table);
1022
1023static struct usb_driver vt6656_driver = {
1024 .name = DEVICE_NAME,
1025 .probe = vt6656_probe,
1026 .disconnect = vt6656_disconnect,
1027 .id_table = vt6656_table,
1028#ifdef CONFIG_PM
1029 .suspend = vt6656_suspend,
1030 .resume = vt6656_resume,
1031#endif
1032};
1033
1034module_usb_driver(vt6656_driver);
1035
