1 /*
2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
3 * All rights reserved.
4 *
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.
9 *
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.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * File: main_usb.c
20 *
21 * Purpose: driver entry for initial, open, close, tx and rx.
22 *
23 * Author: Lyndon Chen
24 *
25 * Date: Dec 8, 2005
26 *
27 * Functions:
28 *
29 * vt6656_probe - module initial (insmod) driver entry
30 * vnt_free_tx_bufs - free tx buffer function
31 * vnt_init_registers- initial MAC & BBP & RF internal registers.
32 *
33 * Revision History:
34 */
35 #undef __NO_VERSION__
36
37 #include <linux/file.h>
38 #include "device.h"
39 #include "card.h"
40 #include "baseband.h"
41 #include "mac.h"
42 #include "power.h"
43 #include "wcmd.h"
44 #include "rxtx.h"
45 #include "dpc.h"
46 #include "rf.h"
47 #include "firmware.h"
48 #include "usbpipe.h"
49 #include "channel.h"
50 #include "int.h"
51
52 /*
53 * define module options
54 */
55
56 /* version information */
57 #define DRIVER_AUTHOR \
58 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
59 MODULE_AUTHOR(DRIVER_AUTHOR);
60 MODULE_LICENSE("GPL");
61 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
62
63 #define RX_DESC_DEF0 64
64 static int vnt_rx_buffers = RX_DESC_DEF0;
65 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
66 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
67
68 #define TX_DESC_DEF0 64
69 static int vnt_tx_buffers = TX_DESC_DEF0;
70 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
71 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
72
73 #define RTS_THRESH_DEF 2347
74 #define FRAG_THRESH_DEF 2346
75 #define SHORT_RETRY_DEF 8
76 #define LONG_RETRY_DEF 4
77
78 /* BasebandType[] baseband type selected
79 0: indicate 802.11a type
80 1: indicate 802.11b type
81 2: indicate 802.11g type
82 */
83
84 #define BBP_TYPE_DEF 2
85
86 /*
87 * Static vars definitions
88 */
89
90 static struct usb_device_id vt6656_table[] = {
91 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
92 {}
93 };
94
vnt_set_options(struct vnt_private * priv)95 static void vnt_set_options(struct vnt_private *priv)
96 {
97 /* Set number of TX buffers */
98 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
99 priv->num_tx_context = TX_DESC_DEF0;
100 else
101 priv->num_tx_context = vnt_tx_buffers;
102
103 /* Set number of RX buffers */
104 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
105 priv->num_rcb = RX_DESC_DEF0;
106 else
107 priv->num_rcb = vnt_rx_buffers;
108
109 priv->short_retry_limit = SHORT_RETRY_DEF;
110 priv->long_retry_limit = LONG_RETRY_DEF;
111 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
112 priv->bb_type = BBP_TYPE_DEF;
113 priv->packet_type = priv->bb_type;
114 priv->auto_fb_ctrl = AUTO_FB_0;
115 priv->preamble_type = 0;
116 priv->exist_sw_net_addr = false;
117 }
118
119 /*
120 * initialization of MAC & BBP registers
121 */
vnt_init_registers(struct vnt_private * priv)122 static int vnt_init_registers(struct vnt_private *priv)
123 {
124 struct vnt_cmd_card_init *init_cmd = &priv->init_command;
125 struct vnt_rsp_card_init *init_rsp = &priv->init_response;
126 u8 antenna;
127 int ii;
128 int status = STATUS_SUCCESS;
129 u8 tmp;
130 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
131
132 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
133 DEVICE_INIT_COLD, priv->packet_type);
134
135 if (!vnt_check_firmware_version(priv)) {
136 if (vnt_download_firmware(priv) == true) {
137 if (vnt_firmware_branch_to_sram(priv) == false) {
138 dev_dbg(&priv->usb->dev,
139 " vnt_firmware_branch_to_sram fail\n");
140 return false;
141 }
142 } else {
143 dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
144 return false;
145 }
146 }
147
148 if (!vnt_vt3184_init(priv)) {
149 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
150 return false;
151 }
152
153 init_cmd->init_class = DEVICE_INIT_COLD;
154 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
155 for (ii = 0; ii < 6; ii++)
156 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
157 init_cmd->short_retry_limit = priv->short_retry_limit;
158 init_cmd->long_retry_limit = priv->long_retry_limit;
159
160 /* issue card_init command to device */
161 status = vnt_control_out(priv,
162 MESSAGE_TYPE_CARDINIT, 0, 0,
163 sizeof(struct vnt_cmd_card_init), (u8 *)init_cmd);
164 if (status != STATUS_SUCCESS) {
165 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
166 return false;
167 }
168
169 status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
170 sizeof(struct vnt_rsp_card_init), (u8 *)init_rsp);
171 if (status != STATUS_SUCCESS) {
172 dev_dbg(&priv->usb->dev,
173 "Cardinit request in status fail!\n");
174 return false;
175 }
176
177 /* local ID for AES functions */
178 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
179 MAC_REG_LOCALID, MESSAGE_REQUEST_MACREG, 1,
180 &priv->local_id);
181 if (status != STATUS_SUCCESS)
182 return false;
183
184 /* do MACbSoftwareReset in MACvInitialize */
185
186 priv->top_ofdm_basic_rate = RATE_24M;
187 priv->top_cck_basic_rate = RATE_1M;
188
189 /* target to IF pin while programming to RF chip */
190 priv->power = 0xFF;
191
192 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
193 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
194 /* load power table */
195 for (ii = 0; ii < 14; ii++) {
196 priv->cck_pwr_tbl[ii] =
197 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
198 if (priv->cck_pwr_tbl[ii] == 0)
199 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
200
201 priv->ofdm_pwr_tbl[ii] =
202 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
203 if (priv->ofdm_pwr_tbl[ii] == 0)
204 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
205 }
206
207 /*
208 * original zonetype is USA, but custom zonetype is Europe,
209 * then need to recover 12, 13, 14 channels with 11 channel
210 */
211 for (ii = 11; ii < 14; ii++) {
212 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
213 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
214 }
215
216 priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
217
218 /* load OFDM A power table */
219 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
220 priv->ofdm_a_pwr_tbl[ii] =
221 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
222
223 if (priv->ofdm_a_pwr_tbl[ii] == 0)
224 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
225 }
226
227 antenna = priv->eeprom[EEP_OFS_ANTENNA];
228
229 if (antenna & EEP_ANTINV)
230 priv->tx_rx_ant_inv = true;
231 else
232 priv->tx_rx_ant_inv = false;
233
234 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
235
236 if (antenna == 0) /* if not set default is both */
237 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
238
239 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
240 priv->tx_antenna_mode = ANT_B;
241 priv->rx_antenna_sel = 1;
242
243 if (priv->tx_rx_ant_inv == true)
244 priv->rx_antenna_mode = ANT_A;
245 else
246 priv->rx_antenna_mode = ANT_B;
247 } else {
248 priv->rx_antenna_sel = 0;
249
250 if (antenna & EEP_ANTENNA_AUX) {
251 priv->tx_antenna_mode = ANT_A;
252
253 if (priv->tx_rx_ant_inv == true)
254 priv->rx_antenna_mode = ANT_B;
255 else
256 priv->rx_antenna_mode = ANT_A;
257 } else {
258 priv->tx_antenna_mode = ANT_B;
259
260 if (priv->tx_rx_ant_inv == true)
261 priv->rx_antenna_mode = ANT_A;
262 else
263 priv->rx_antenna_mode = ANT_B;
264 }
265 }
266
267 /* Set initial antenna mode */
268 vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
269
270 /* get Auto Fall Back type */
271 priv->auto_fb_ctrl = AUTO_FB_0;
272
273 /* default Auto Mode */
274 priv->bb_type = BB_TYPE_11G;
275
276 /* get RFType */
277 priv->rf_type = init_rsp->rf_type;
278
279 /* load vt3266 calibration parameters in EEPROM */
280 if (priv->rf_type == RF_VT3226D0) {
281 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
282 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
283
284 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
285 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
286 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
287 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
288 /* CR255, enable TX/RX IQ and
289 DC compensation mode */
290 vnt_control_out_u8(priv,
291 MESSAGE_REQUEST_BBREG,
292 0xff,
293 0x03);
294 /* CR251, TX I/Q Imbalance Calibration */
295 vnt_control_out_u8(priv,
296 MESSAGE_REQUEST_BBREG,
297 0xfb,
298 calib_tx_iq);
299 /* CR252, TX DC-Offset Calibration */
300 vnt_control_out_u8(priv,
301 MESSAGE_REQUEST_BBREG,
302 0xfC,
303 calib_tx_dc);
304 /* CR253, RX I/Q Imbalance Calibration */
305 vnt_control_out_u8(priv,
306 MESSAGE_REQUEST_BBREG,
307 0xfd,
308 calib_rx_iq);
309 } else {
310 /* CR255, turn off
311 BB Calibration compensation */
312 vnt_control_out_u8(priv,
313 MESSAGE_REQUEST_BBREG,
314 0xff,
315 0x0);
316 }
317 }
318 }
319
320 /* get permanent network address */
321 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
322 memcpy(priv->current_net_addr, priv->permanent_net_addr, ETH_ALEN);
323
324 /* if exist SW network address, use it */
325 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
326 priv->current_net_addr);
327
328 /*
329 * set BB and packet type at the same time
330 * set Short Slot Time, xIFS, and RSPINF
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
vnt_free_tx_bufs(struct vnt_private * priv)369 static 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 /* deallocate URBs */
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
vnt_free_rx_bufs(struct vnt_private * priv)386 static 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 /* deallocate URBs */
397 if (rcb->urb) {
398 usb_kill_urb(rcb->urb);
399 usb_free_urb(rcb->urb);
400 }
401
402 /* deallocate skb */
403 if (rcb->skb)
404 dev_kfree_skb(rcb->skb);
405
406 kfree(rcb);
407 }
408 }
409
usb_device_reset(struct vnt_private * priv)410 static 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
vnt_free_int_bufs(struct vnt_private * priv)420 static void vnt_free_int_bufs(struct vnt_private *priv)
421 {
422 kfree(priv->int_buf.data_buf);
423 }
424
vnt_alloc_bufs(struct vnt_private * priv)425 static 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 == NULL) {
435 dev_err(&priv->usb->dev,
436 "allocate tx usb context failed\n");
437 goto free_tx;
438 }
439
440 priv->tx_context[ii] = tx_context;
441 tx_context->priv = priv;
442 tx_context->pkt_no = ii;
443
444 /* allocate URBs */
445 tx_context->urb = usb_alloc_urb(0, GFP_ATOMIC);
446 if (!tx_context->urb) {
447 dev_err(&priv->usb->dev, "alloc tx urb failed\n");
448 goto free_tx;
449 }
450
451 tx_context->in_use = false;
452 }
453
454 for (ii = 0; ii < priv->num_rcb; ii++) {
455 priv->rcb[ii] = kzalloc(sizeof(struct vnt_rcb), GFP_KERNEL);
456 if (!priv->rcb[ii]) {
457 dev_err(&priv->usb->dev,
458 "failed to allocate rcb no %d\n", ii);
459 goto free_rx_tx;
460 }
461
462 rcb = priv->rcb[ii];
463
464 rcb->priv = priv;
465
466 /* allocate URBs */
467 rcb->urb = usb_alloc_urb(0, GFP_ATOMIC);
468 if (rcb->urb == NULL) {
469 dev_err(&priv->usb->dev, "Failed to alloc rx urb\n");
470 goto free_rx_tx;
471 }
472
473 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
474 if (rcb->skb == NULL) {
475 dev_err(&priv->usb->dev, "Failed to alloc rx skb\n");
476 goto free_rx_tx;
477 }
478
479 rcb->in_use = false;
480
481 /* submit rx urb */
482 if (vnt_submit_rx_urb(priv, rcb))
483 goto free_rx_tx;
484 }
485
486 priv->interrupt_urb = usb_alloc_urb(0, GFP_ATOMIC);
487 if (priv->interrupt_urb == NULL) {
488 dev_err(&priv->usb->dev, "Failed to alloc int urb\n");
489 goto free_rx_tx;
490 }
491
492 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
493 if (priv->int_buf.data_buf == NULL) {
494 dev_err(&priv->usb->dev, "Failed to alloc int buf\n");
495 usb_free_urb(priv->interrupt_urb);
496 goto free_rx_tx;
497 }
498
499 return true;
500
501 free_rx_tx:
502 vnt_free_rx_bufs(priv);
503
504 free_tx:
505 vnt_free_tx_bufs(priv);
506
507 return false;
508 }
509
vnt_tx_80211(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)510 static void vnt_tx_80211(struct ieee80211_hw *hw,
511 struct ieee80211_tx_control *control, struct sk_buff *skb)
512 {
513 struct vnt_private *priv = hw->priv;
514
515 ieee80211_stop_queues(hw);
516
517 if (vnt_tx_packet(priv, skb)) {
518 ieee80211_free_txskb(hw, skb);
519
520 ieee80211_wake_queues(hw);
521 }
522 }
523
vnt_start(struct ieee80211_hw * hw)524 static int vnt_start(struct ieee80211_hw *hw)
525 {
526 struct vnt_private *priv = hw->priv;
527
528 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
529
530 if (vnt_alloc_bufs(priv) == false) {
531 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
532 return -ENOMEM;
533 }
534
535 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
536
537 if (vnt_init_registers(priv) == false) {
538 dev_dbg(&priv->usb->dev, " init register fail\n");
539 goto free_all;
540 }
541
542 if (vnt_key_init_table(priv))
543 goto free_all;
544
545 priv->int_interval = 1; /* bInterval is set to 1 */
546
547 vnt_int_start_interrupt(priv);
548
549 ieee80211_wake_queues(hw);
550
551 return 0;
552
553 free_all:
554 vnt_free_rx_bufs(priv);
555 vnt_free_tx_bufs(priv);
556 vnt_free_int_bufs(priv);
557
558 usb_kill_urb(priv->interrupt_urb);
559 usb_free_urb(priv->interrupt_urb);
560
561 return -ENOMEM;
562 }
563
vnt_stop(struct ieee80211_hw * hw)564 static void vnt_stop(struct ieee80211_hw *hw)
565 {
566 struct vnt_private *priv = hw->priv;
567 int i;
568
569 if (!priv)
570 return;
571
572 for (i = 0; i < MAX_KEY_TABLE; i++)
573 vnt_mac_disable_keyentry(priv, i);
574
575 /* clear all keys */
576 priv->key_entry_inuse = 0;
577
578 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
579 vnt_mac_shutdown(priv);
580
581 ieee80211_stop_queues(hw);
582
583 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
584
585 cancel_delayed_work_sync(&priv->run_command_work);
586
587 priv->cmd_running = false;
588
589 vnt_free_tx_bufs(priv);
590 vnt_free_rx_bufs(priv);
591 vnt_free_int_bufs(priv);
592
593 usb_kill_urb(priv->interrupt_urb);
594 usb_free_urb(priv->interrupt_urb);
595 }
596
vnt_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)597 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
598 {
599 struct vnt_private *priv = hw->priv;
600
601 priv->vif = vif;
602
603 switch (vif->type) {
604 case NL80211_IFTYPE_STATION:
605 break;
606 case NL80211_IFTYPE_ADHOC:
607 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
608
609 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
610
611 break;
612 case NL80211_IFTYPE_AP:
613 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
614
615 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
616
617 break;
618 default:
619 return -EOPNOTSUPP;
620 }
621
622 priv->op_mode = vif->type;
623
624 vnt_set_bss_mode(priv);
625
626 /* LED blink on TX */
627 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
628
629 return 0;
630 }
631
vnt_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)632 static void vnt_remove_interface(struct ieee80211_hw *hw,
633 struct ieee80211_vif *vif)
634 {
635 struct vnt_private *priv = hw->priv;
636
637 switch (vif->type) {
638 case NL80211_IFTYPE_STATION:
639 break;
640 case NL80211_IFTYPE_ADHOC:
641 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
642 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
643 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
644 break;
645 case NL80211_IFTYPE_AP:
646 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
647 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
648 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
649 break;
650 default:
651 break;
652 }
653
654 vnt_radio_power_off(priv);
655
656 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
657
658 /* LED slow blink */
659 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
660 }
661
vnt_config(struct ieee80211_hw * hw,u32 changed)662 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
663 {
664 struct vnt_private *priv = hw->priv;
665 struct ieee80211_conf *conf = &hw->conf;
666 u8 bb_type;
667
668 if (changed & IEEE80211_CONF_CHANGE_PS) {
669 if (conf->flags & IEEE80211_CONF_PS)
670 vnt_enable_power_saving(priv, conf->listen_interval);
671 else
672 vnt_disable_power_saving(priv);
673 }
674
675 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
676 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
677 vnt_set_channel(priv, conf->chandef.chan->hw_value);
678
679 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
680 bb_type = BB_TYPE_11A;
681 else
682 bb_type = BB_TYPE_11G;
683
684 if (priv->bb_type != bb_type) {
685 priv->bb_type = bb_type;
686
687 vnt_set_bss_mode(priv);
688 }
689 }
690
691 if (changed & IEEE80211_CONF_CHANGE_POWER) {
692 if (priv->bb_type == BB_TYPE_11B)
693 priv->current_rate = RATE_1M;
694 else
695 priv->current_rate = RATE_54M;
696
697 vnt_rf_setpower(priv, priv->current_rate,
698 conf->chandef.chan->hw_value);
699 }
700
701 return 0;
702 }
703
vnt_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * conf,u32 changed)704 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
705 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
706 u32 changed)
707 {
708 struct vnt_private *priv = hw->priv;
709
710 priv->current_aid = conf->aid;
711
712 if (changed & BSS_CHANGED_BSSID)
713 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
714
715
716 if (changed & BSS_CHANGED_BASIC_RATES) {
717 priv->basic_rates = conf->basic_rates;
718
719 vnt_update_top_rates(priv);
720
721 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
722 }
723
724 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
725 if (conf->use_short_preamble) {
726 vnt_mac_enable_barker_preamble_mode(priv);
727 priv->preamble_type = true;
728 } else {
729 vnt_mac_disable_barker_preamble_mode(priv);
730 priv->preamble_type = false;
731 }
732 }
733
734 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
735 if (conf->use_cts_prot)
736 vnt_mac_enable_protect_mode(priv);
737 else
738 vnt_mac_disable_protect_mode(priv);
739 }
740
741 if (changed & BSS_CHANGED_ERP_SLOT) {
742 if (conf->use_short_slot)
743 priv->short_slot_time = true;
744 else
745 priv->short_slot_time = false;
746
747 vnt_set_short_slot_time(priv);
748 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
749 vnt_update_pre_ed_threshold(priv, false);
750 }
751
752 if (changed & BSS_CHANGED_TXPOWER)
753 vnt_rf_setpower(priv, priv->current_rate,
754 conf->chandef.chan->hw_value);
755
756 if (changed & BSS_CHANGED_BEACON_ENABLED) {
757 dev_dbg(&priv->usb->dev,
758 "Beacon enable %d\n", conf->enable_beacon);
759
760 if (conf->enable_beacon) {
761 vnt_beacon_enable(priv, vif, conf);
762
763 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
764 } else {
765 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
766 }
767 }
768 }
769
vnt_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)770 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
771 struct netdev_hw_addr_list *mc_list)
772 {
773 struct vnt_private *priv = hw->priv;
774 struct netdev_hw_addr *ha;
775 u64 mc_filter = 0;
776 u32 bit_nr = 0;
777
778 netdev_hw_addr_list_for_each(ha, mc_list) {
779 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
780
781 mc_filter |= 1ULL << (bit_nr & 0x3f);
782 }
783
784 priv->mc_list_count = mc_list->count;
785
786 return mc_filter;
787 }
788
vnt_configure(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)789 static void vnt_configure(struct ieee80211_hw *hw,
790 unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
791 {
792 struct vnt_private *priv = hw->priv;
793 u8 rx_mode = 0;
794 int rc;
795
796 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_PROMISC_IN_BSS |
797 FIF_BCN_PRBRESP_PROMISC;
798
799 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
800 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
801
802 if (!rc)
803 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
804
805 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
806
807 if (changed_flags & FIF_PROMISC_IN_BSS) {
808 /* unconditionally log net taps */
809 if (*total_flags & FIF_PROMISC_IN_BSS)
810 rx_mode |= RCR_UNICAST;
811 else
812 rx_mode &= ~RCR_UNICAST;
813 }
814
815 if (changed_flags & FIF_ALLMULTI) {
816 if (*total_flags & FIF_ALLMULTI) {
817 if (priv->mc_list_count > 2)
818 vnt_mac_set_filter(priv, ~0);
819 else
820 vnt_mac_set_filter(priv, multicast);
821
822 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
823 } else {
824 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
825 }
826
827 }
828
829 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
830 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
831 rx_mode &= ~RCR_BSSID;
832 else
833 rx_mode |= RCR_BSSID;
834 }
835
836 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
837
838 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
839 }
840
vnt_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)841 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
842 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
843 struct ieee80211_key_conf *key)
844 {
845 struct vnt_private *priv = hw->priv;
846
847 switch (cmd) {
848 case SET_KEY:
849 if (vnt_set_keys(hw, sta, vif, key))
850 return -EOPNOTSUPP;
851 break;
852 case DISABLE_KEY:
853 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
854 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
855 default:
856 break;
857 }
858
859 return 0;
860 }
861
vnt_sw_scan_start(struct ieee80211_hw * hw)862 static void vnt_sw_scan_start(struct ieee80211_hw *hw)
863 {
864 struct vnt_private *priv = hw->priv;
865
866 vnt_set_bss_mode(priv);
867 /* Set max sensitivity*/
868 vnt_update_pre_ed_threshold(priv, true);
869 }
870
vnt_sw_scan_complete(struct ieee80211_hw * hw)871 static void vnt_sw_scan_complete(struct ieee80211_hw *hw)
872 {
873 struct vnt_private *priv = hw->priv;
874
875 /* Return sensitivity to channel level*/
876 vnt_update_pre_ed_threshold(priv, false);
877 }
878
vnt_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)879 static 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
vnt_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)889 static 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
vnt_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)896 static 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
vnt_reset_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)904 static 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
913 static 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
vnt_init(struct vnt_private * priv)932 int 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
952 static int
vt6656_probe(struct usb_interface * intf,const struct usb_device_id * id)953 vt6656_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 goto err_nomem;
972 }
973
974 priv = hw->priv;
975 priv->hw = hw;
976 priv->usb = udev;
977
978 vnt_set_options(priv);
979
980 spin_lock_init(&priv->lock);
981 mutex_init(&priv->usb_lock);
982
983 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
984
985 usb_set_intfdata(intf, priv);
986
987 wiphy = priv->hw->wiphy;
988
989 wiphy->frag_threshold = FRAG_THRESH_DEF;
990 wiphy->rts_threshold = RTS_THRESH_DEF;
991 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
992 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
993
994 priv->hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
995 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
996 IEEE80211_HW_SIGNAL_DBM |
997 IEEE80211_HW_TIMING_BEACON_ONLY;
998
999 priv->hw->max_signal = 100;
1000
1001 SET_IEEE80211_DEV(priv->hw, &intf->dev);
1002
1003 usb_device_reset(priv);
1004
1005 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1006 vnt_reset_command_timer(priv);
1007
1008 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1009
1010 return 0;
1011
1012 err_nomem:
1013 usb_put_dev(udev);
1014
1015 return rc;
1016 }
1017
vt6656_disconnect(struct usb_interface * intf)1018 static void vt6656_disconnect(struct usb_interface *intf)
1019 {
1020 struct vnt_private *priv = usb_get_intfdata(intf);
1021
1022 if (!priv)
1023 return;
1024
1025 if (priv->mac_hw)
1026 ieee80211_unregister_hw(priv->hw);
1027
1028 usb_set_intfdata(intf, NULL);
1029 usb_put_dev(interface_to_usbdev(intf));
1030
1031 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1032
1033 ieee80211_free_hw(priv->hw);
1034 }
1035
1036 #ifdef CONFIG_PM
1037
vt6656_suspend(struct usb_interface * intf,pm_message_t message)1038 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1039 {
1040 return 0;
1041 }
1042
vt6656_resume(struct usb_interface * intf)1043 static int vt6656_resume(struct usb_interface *intf)
1044 {
1045 return 0;
1046 }
1047
1048 #endif /* CONFIG_PM */
1049
1050 MODULE_DEVICE_TABLE(usb, vt6656_table);
1051
1052 static struct usb_driver vt6656_driver = {
1053 .name = DEVICE_NAME,
1054 .probe = vt6656_probe,
1055 .disconnect = vt6656_disconnect,
1056 .id_table = vt6656_table,
1057 #ifdef CONFIG_PM
1058 .suspend = vt6656_suspend,
1059 .resume = vt6656_resume,
1060 #endif /* CONFIG_PM */
1061 };
1062
1063 module_usb_driver(vt6656_driver);
1064