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[thirdparty/linux.git] / drivers / staging / vt6656 / main_usb.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 * File: main_usb.c
7 *
8 * Purpose: driver entry for initial, open, close, tx and rx.
9 *
10 * Author: Lyndon Chen
11 *
12 * Date: Dec 8, 2005
13 *
14 * Functions:
15 *
16 * vt6656_probe - module initial (insmod) driver entry
17 * vnt_free_tx_bufs - free tx buffer function
18 * vnt_init_registers- initial MAC & BBP & RF internal registers.
19 *
20 * Revision History:
21 */
22 #undef __NO_VERSION__
23
24 #include <linux/bits.h>
25 #include <linux/etherdevice.h>
26 #include <linux/file.h>
27 #include <linux/kernel.h>
28 #include "device.h"
29 #include "card.h"
30 #include "baseband.h"
31 #include "mac.h"
32 #include "power.h"
33 #include "wcmd.h"
34 #include "rxtx.h"
35 #include "rf.h"
36 #include "firmware.h"
37 #include "usbpipe.h"
38 #include "channel.h"
39
40 /*
41 * define module options
42 */
43
44 /* version information */
45 #define DRIVER_AUTHOR \
46 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
47 MODULE_AUTHOR(DRIVER_AUTHOR);
48 MODULE_LICENSE("GPL");
49 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
50
51 #define RX_DESC_DEF0 64
52 static int vnt_rx_buffers = RX_DESC_DEF0;
53 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
54 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
55
56 #define TX_DESC_DEF0 64
57 static int vnt_tx_buffers = TX_DESC_DEF0;
58 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
59 MODULE_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 /* BasebandType[] baseband type selected
67 * 0: indicate 802.11a type
68 * 1: indicate 802.11b type
69 * 2: indicate 802.11g type
70 */
71
72 #define BBP_TYPE_DEF 2
73
74 /*
75 * Static vars definitions
76 */
77
78 static const struct usb_device_id vt6656_table[] = {
79 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
80 {}
81 };
82
83 static void vnt_set_options(struct vnt_private *priv)
84 {
85 /* Set number of TX buffers */
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 /* Set number of RX buffers */
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->preamble_type = 0;
103 priv->exist_sw_net_addr = false;
104 }
105
106 /*
107 * initialization of MAC & BBP registers
108 */
109 static int vnt_init_registers(struct vnt_private *priv)
110 {
111 int ret;
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 u8 tmp;
117 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
118
119 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
120 DEVICE_INIT_COLD, priv->packet_type);
121
122 ret = vnt_check_firmware_version(priv);
123 if (ret) {
124 ret = vnt_download_firmware(priv);
125 if (ret) {
126 dev_dbg(&priv->usb->dev,
127 "Could not download firmware: %d.\n", ret);
128 goto end;
129 }
130
131 ret = vnt_firmware_branch_to_sram(priv);
132 if (ret) {
133 dev_dbg(&priv->usb->dev,
134 "Could not branch to SRAM: %d.\n", ret);
135 goto end;
136 }
137 }
138
139 ret = vnt_vt3184_init(priv);
140 if (ret) {
141 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
142 goto end;
143 }
144
145 init_cmd->init_class = DEVICE_INIT_COLD;
146 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
147 for (ii = 0; ii < ARRAY_SIZE(init_cmd->sw_net_addr); ii++)
148 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
149 init_cmd->short_retry_limit = priv->short_retry_limit;
150 init_cmd->long_retry_limit = priv->long_retry_limit;
151
152 /* issue card_init command to device */
153 ret = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
154 sizeof(struct vnt_cmd_card_init),
155 (u8 *)init_cmd);
156 if (ret) {
157 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
158 goto end;
159 }
160
161 ret = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
162 sizeof(struct vnt_rsp_card_init),
163 (u8 *)init_rsp);
164 if (ret) {
165 dev_dbg(&priv->usb->dev, "Cardinit request in status fail!\n");
166 goto end;
167 }
168
169 /* local ID for AES functions */
170 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
171 MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
172 if (ret)
173 goto end;
174
175 /* do MACbSoftwareReset in MACvInitialize */
176
177 priv->top_ofdm_basic_rate = RATE_24M;
178 priv->top_cck_basic_rate = RATE_1M;
179
180 /* target to IF pin while programming to RF chip */
181 priv->power = 0xFF;
182
183 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
184 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
185 /* load power table */
186 for (ii = 0; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
187 priv->cck_pwr_tbl[ii] =
188 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
189 if (priv->cck_pwr_tbl[ii] == 0)
190 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
191
192 priv->ofdm_pwr_tbl[ii] =
193 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
194 if (priv->ofdm_pwr_tbl[ii] == 0)
195 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
196 }
197
198 /*
199 * original zonetype is USA, but custom zonetype is Europe,
200 * then need to recover 12, 13, 14 channels with 11 channel
201 */
202 for (ii = 11; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
203 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
204 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
205 }
206
207 priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
208
209 /* load OFDM A power table */
210 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
211 priv->ofdm_a_pwr_tbl[ii] =
212 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
213
214 if (priv->ofdm_a_pwr_tbl[ii] == 0)
215 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
216 }
217
218 antenna = priv->eeprom[EEP_OFS_ANTENNA];
219
220 if (antenna & EEP_ANTINV)
221 priv->tx_rx_ant_inv = true;
222 else
223 priv->tx_rx_ant_inv = false;
224
225 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
226
227 if (antenna == 0) /* if not set default is both */
228 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
229
230 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
231 priv->tx_antenna_mode = ANT_B;
232 priv->rx_antenna_sel = 1;
233
234 if (priv->tx_rx_ant_inv)
235 priv->rx_antenna_mode = ANT_A;
236 else
237 priv->rx_antenna_mode = ANT_B;
238 } else {
239 priv->rx_antenna_sel = 0;
240
241 if (antenna & EEP_ANTENNA_AUX) {
242 priv->tx_antenna_mode = ANT_A;
243
244 if (priv->tx_rx_ant_inv)
245 priv->rx_antenna_mode = ANT_B;
246 else
247 priv->rx_antenna_mode = ANT_A;
248 } else {
249 priv->tx_antenna_mode = ANT_B;
250
251 if (priv->tx_rx_ant_inv)
252 priv->rx_antenna_mode = ANT_A;
253 else
254 priv->rx_antenna_mode = ANT_B;
255 }
256 }
257
258 /* Set initial antenna mode */
259 ret = vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
260 if (ret)
261 goto end;
262
263 /* default Auto Mode */
264 priv->bb_type = BB_TYPE_11G;
265
266 /* get RFType */
267 priv->rf_type = init_rsp->rf_type;
268
269 /* load vt3266 calibration parameters in EEPROM */
270 if (priv->rf_type == RF_VT3226D0) {
271 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
272 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
273 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
274 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
275 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
276 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
277 /* CR255, enable TX/RX IQ and
278 * DC compensation mode
279 */
280 ret = vnt_control_out_u8(priv,
281 MESSAGE_REQUEST_BBREG,
282 0xff, 0x03);
283 if (ret)
284 goto end;
285
286 /* CR251, TX I/Q Imbalance Calibration */
287 ret = vnt_control_out_u8(priv,
288 MESSAGE_REQUEST_BBREG,
289 0xfb, calib_tx_iq);
290 if (ret)
291 goto end;
292
293 /* CR252, TX DC-Offset Calibration */
294 ret = vnt_control_out_u8(priv,
295 MESSAGE_REQUEST_BBREG,
296 0xfC, calib_tx_dc);
297 if (ret)
298 goto end;
299
300 /* CR253, RX I/Q Imbalance Calibration */
301 ret = vnt_control_out_u8(priv,
302 MESSAGE_REQUEST_BBREG,
303 0xfd, calib_rx_iq);
304 if (ret)
305 goto end;
306 } else {
307 /* CR255, turn off
308 * BB Calibration compensation
309 */
310 ret = vnt_control_out_u8(priv,
311 MESSAGE_REQUEST_BBREG,
312 0xff, 0x0);
313 if (ret)
314 goto end;
315 }
316 }
317 }
318
319 /* get permanent network address */
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 /* if exist SW network address, use it */
324 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
325 priv->current_net_addr);
326
327 /*
328 * set BB and packet type at the same time
329 * set Short Slot Time, xIFS, and RSPINF
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 ret = vnt_set_short_slot_time(priv);
337 if (ret)
338 goto end;
339
340 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
341
342 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
343 ret = vnt_control_in(priv, MESSAGE_TYPE_READ,
344 MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG,
345 1, &tmp);
346 if (ret)
347 goto end;
348
349 if ((tmp & GPIO3_DATA) == 0) {
350 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
351 GPIO3_INTMD);
352 } else {
353 ret = vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
354 GPIO3_INTMD);
355 }
356
357 if (ret)
358 goto end;
359 }
360
361 ret = vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
362 if (ret)
363 goto end;
364
365 ret = vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
366 if (ret)
367 goto end;
368
369 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, BIT(0));
370 if (ret)
371 goto end;
372
373 ret = vnt_radio_power_on(priv);
374 if (ret)
375 goto end;
376
377 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
378
379 end:
380 return ret;
381 }
382
383 static void vnt_free_tx_bufs(struct vnt_private *priv)
384 {
385 struct vnt_usb_send_context *tx_context;
386 int ii;
387
388 for (ii = 0; ii < priv->num_tx_context; ii++) {
389 tx_context = priv->tx_context[ii];
390 if (!tx_context)
391 continue;
392
393 /* deallocate URBs */
394 if (tx_context->urb) {
395 usb_kill_urb(tx_context->urb);
396 usb_free_urb(tx_context->urb);
397 }
398
399 kfree(tx_context);
400 }
401 }
402
403 static void vnt_free_rx_bufs(struct vnt_private *priv)
404 {
405 struct vnt_rcb *rcb;
406 int ii;
407
408 for (ii = 0; ii < priv->num_rcb; ii++) {
409 rcb = priv->rcb[ii];
410 if (!rcb)
411 continue;
412
413 /* deallocate URBs */
414 if (rcb->urb) {
415 usb_kill_urb(rcb->urb);
416 usb_free_urb(rcb->urb);
417 }
418
419 /* deallocate skb */
420 if (rcb->skb)
421 dev_kfree_skb(rcb->skb);
422
423 kfree(rcb);
424 }
425 }
426
427 static void vnt_free_int_bufs(struct vnt_private *priv)
428 {
429 kfree(priv->int_buf.data_buf);
430 }
431
432 static int vnt_alloc_bufs(struct vnt_private *priv)
433 {
434 int ret;
435 struct vnt_usb_send_context *tx_context;
436 struct vnt_rcb *rcb;
437 int ii;
438
439 for (ii = 0; ii < priv->num_tx_context; ii++) {
440 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
441 if (!tx_context) {
442 ret = -ENOMEM;
443 goto free_tx;
444 }
445
446 priv->tx_context[ii] = tx_context;
447 tx_context->priv = priv;
448 tx_context->pkt_no = ii;
449
450 /* allocate URBs */
451 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
452 if (!tx_context->urb) {
453 ret = -ENOMEM;
454 goto free_tx;
455 }
456
457 tx_context->in_use = false;
458 }
459
460 for (ii = 0; ii < priv->num_rcb; ii++) {
461 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
462 if (!priv->rcb[ii]) {
463 ret = -ENOMEM;
464 goto free_rx_tx;
465 }
466
467 rcb = priv->rcb[ii];
468
469 rcb->priv = priv;
470
471 /* allocate URBs */
472 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
473 if (!rcb->urb) {
474 ret = -ENOMEM;
475 goto free_rx_tx;
476 }
477
478 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
479 if (!rcb->skb) {
480 ret = -ENOMEM;
481 goto free_rx_tx;
482 }
483 /* submit rx urb */
484 ret = vnt_submit_rx_urb(priv, rcb);
485 if (ret)
486 goto free_rx_tx;
487 }
488
489 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
490 if (!priv->interrupt_urb) {
491 ret = -ENOMEM;
492 goto free_rx_tx;
493 }
494
495 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
496 if (!priv->int_buf.data_buf) {
497 ret = -ENOMEM;
498 goto free_rx_tx_urb;
499 }
500
501 return 0;
502
503 free_rx_tx_urb:
504 usb_free_urb(priv->interrupt_urb);
505 free_rx_tx:
506 vnt_free_rx_bufs(priv);
507 free_tx:
508 vnt_free_tx_bufs(priv);
509 return ret;
510 }
511
512 static void vnt_tx_80211(struct ieee80211_hw *hw,
513 struct ieee80211_tx_control *control,
514 struct sk_buff *skb)
515 {
516 struct vnt_private *priv = hw->priv;
517
518 if (vnt_tx_packet(priv, skb))
519 ieee80211_free_txskb(hw, skb);
520 }
521
522 static int vnt_start(struct ieee80211_hw *hw)
523 {
524 int ret;
525 struct vnt_private *priv = hw->priv;
526
527 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
528
529 ret = vnt_alloc_bufs(priv);
530 if (ret) {
531 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
532 goto err;
533 }
534
535 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
536
537 ret = vnt_init_registers(priv);
538 if (ret) {
539 dev_dbg(&priv->usb->dev, " init register fail\n");
540 goto free_all;
541 }
542
543 ret = vnt_key_init_table(priv);
544 if (ret)
545 goto free_all;
546
547 priv->int_interval = 1; /* bInterval is set to 1 */
548
549 ret = vnt_start_interrupt_urb(priv);
550 if (ret)
551 goto free_all;
552
553 ieee80211_wake_queues(hw);
554
555 return 0;
556
557 free_all:
558 vnt_free_rx_bufs(priv);
559 vnt_free_tx_bufs(priv);
560 vnt_free_int_bufs(priv);
561
562 usb_kill_urb(priv->interrupt_urb);
563 usb_free_urb(priv->interrupt_urb);
564 err:
565 return ret;
566 }
567
568 static void vnt_stop(struct ieee80211_hw *hw)
569 {
570 struct vnt_private *priv = hw->priv;
571 int i;
572
573 if (!priv)
574 return;
575
576 for (i = 0; i < MAX_KEY_TABLE; i++)
577 vnt_mac_disable_keyentry(priv, i);
578
579 /* clear all keys */
580 priv->key_entry_inuse = 0;
581
582 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
583 vnt_mac_shutdown(priv);
584
585 ieee80211_stop_queues(hw);
586
587 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
588
589 cancel_delayed_work_sync(&priv->run_command_work);
590
591 priv->cmd_running = false;
592
593 vnt_free_tx_bufs(priv);
594 vnt_free_rx_bufs(priv);
595 vnt_free_int_bufs(priv);
596
597 usb_kill_urb(priv->interrupt_urb);
598 usb_free_urb(priv->interrupt_urb);
599 }
600
601 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
602 {
603 struct vnt_private *priv = hw->priv;
604
605 priv->vif = vif;
606
607 switch (vif->type) {
608 case NL80211_IFTYPE_STATION:
609 break;
610 case NL80211_IFTYPE_ADHOC:
611 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
612
613 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
614
615 break;
616 case NL80211_IFTYPE_AP:
617 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
618
619 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
620
621 break;
622 default:
623 return -EOPNOTSUPP;
624 }
625
626 priv->op_mode = vif->type;
627
628 vnt_set_bss_mode(priv);
629
630 /* LED blink on TX */
631 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
632
633 return 0;
634 }
635
636 static void vnt_remove_interface(struct ieee80211_hw *hw,
637 struct ieee80211_vif *vif)
638 {
639 struct vnt_private *priv = hw->priv;
640
641 switch (vif->type) {
642 case NL80211_IFTYPE_STATION:
643 break;
644 case NL80211_IFTYPE_ADHOC:
645 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
646 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
647 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
648 break;
649 case NL80211_IFTYPE_AP:
650 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
651 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
652 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
653 break;
654 default:
655 break;
656 }
657
658 vnt_radio_power_off(priv);
659
660 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
661
662 /* LED slow blink */
663 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
664 }
665
666 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
667 {
668 struct vnt_private *priv = hw->priv;
669 struct ieee80211_conf *conf = &hw->conf;
670
671 if (changed & IEEE80211_CONF_CHANGE_PS) {
672 if (conf->flags & IEEE80211_CONF_PS)
673 vnt_enable_power_saving(priv, conf->listen_interval);
674 else
675 vnt_disable_power_saving(priv);
676 }
677
678 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
679 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
680 vnt_set_channel(priv, conf->chandef.chan->hw_value);
681
682 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
683 priv->bb_type = BB_TYPE_11A;
684 else
685 priv->bb_type = BB_TYPE_11G;
686 }
687
688 if (changed & IEEE80211_CONF_CHANGE_POWER) {
689 if (priv->bb_type == BB_TYPE_11B)
690 priv->current_rate = RATE_1M;
691 else
692 priv->current_rate = RATE_54M;
693
694 vnt_rf_setpower(priv, priv->current_rate,
695 conf->chandef.chan->hw_value);
696 }
697
698 return 0;
699 }
700
701 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
702 struct ieee80211_vif *vif,
703 struct ieee80211_bss_conf *conf, u32 changed)
704 {
705 struct vnt_private *priv = hw->priv;
706
707 priv->current_aid = conf->aid;
708
709 if (changed & BSS_CHANGED_BSSID && conf->bssid)
710 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
711
712 if (changed & BSS_CHANGED_BASIC_RATES) {
713 priv->basic_rates = conf->basic_rates;
714
715 vnt_update_top_rates(priv);
716 vnt_set_bss_mode(priv);
717
718 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
719 }
720
721 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
722 if (conf->use_short_preamble) {
723 vnt_mac_enable_barker_preamble_mode(priv);
724 priv->preamble_type = true;
725 } else {
726 vnt_mac_disable_barker_preamble_mode(priv);
727 priv->preamble_type = false;
728 }
729 }
730
731 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
732 if (conf->use_cts_prot)
733 vnt_mac_enable_protect_mode(priv);
734 else
735 vnt_mac_disable_protect_mode(priv);
736 }
737
738 if (changed & BSS_CHANGED_ERP_SLOT) {
739 if (conf->use_short_slot)
740 priv->short_slot_time = true;
741 else
742 priv->short_slot_time = false;
743
744 vnt_set_short_slot_time(priv);
745 vnt_update_ifs(priv);
746 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
747 vnt_update_pre_ed_threshold(priv, false);
748 }
749
750 if (changed & BSS_CHANGED_TXPOWER)
751 vnt_rf_setpower(priv, priv->current_rate,
752 conf->chandef.chan->hw_value);
753
754 if (changed & BSS_CHANGED_BEACON_ENABLED) {
755 dev_dbg(&priv->usb->dev,
756 "Beacon enable %d\n", conf->enable_beacon);
757
758 if (conf->enable_beacon) {
759 vnt_beacon_enable(priv, vif, conf);
760
761 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
762 } else {
763 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
764 }
765 }
766
767 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
768 priv->op_mode != NL80211_IFTYPE_AP) {
769 if (conf->assoc && conf->beacon_rate) {
770 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
771 TFTCTL_TSFCNTREN);
772
773 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
774 conf->sync_tsf, priv->current_tsf);
775
776 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
777
778 vnt_reset_next_tbtt(priv, conf->beacon_int);
779 } else {
780 vnt_clear_current_tsf(priv);
781
782 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
783 TFTCTL_TSFCNTREN);
784 }
785 }
786 }
787
788 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
789 struct netdev_hw_addr_list *mc_list)
790 {
791 struct vnt_private *priv = hw->priv;
792 struct netdev_hw_addr *ha;
793 u64 mc_filter = 0;
794 u32 bit_nr;
795
796 netdev_hw_addr_list_for_each(ha, mc_list) {
797 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
798 mc_filter |= BIT_ULL(bit_nr);
799 }
800
801 priv->mc_list_count = mc_list->count;
802
803 return mc_filter;
804 }
805
806 static void vnt_configure(struct ieee80211_hw *hw,
807 unsigned int changed_flags,
808 unsigned int *total_flags, u64 multicast)
809 {
810 struct vnt_private *priv = hw->priv;
811 u8 rx_mode = 0;
812 int rc;
813
814 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
815
816 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
817 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
818
819 if (!rc)
820 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
821
822 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
823
824 if (changed_flags & FIF_ALLMULTI) {
825 if (*total_flags & FIF_ALLMULTI) {
826 if (priv->mc_list_count > 2)
827 vnt_mac_set_filter(priv, ~0);
828 else
829 vnt_mac_set_filter(priv, multicast);
830
831 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
832 } else {
833 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
834 }
835 }
836
837 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
838 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
839 rx_mode &= ~RCR_BSSID;
840 else
841 rx_mode |= RCR_BSSID;
842 }
843
844 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
845
846 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
847 }
848
849 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
850 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
851 struct ieee80211_key_conf *key)
852 {
853 struct vnt_private *priv = hw->priv;
854
855 switch (cmd) {
856 case SET_KEY:
857 return vnt_set_keys(hw, sta, vif, key);
858 case DISABLE_KEY:
859 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
860 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
861 default:
862 break;
863 }
864
865 return 0;
866 }
867
868 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
869 struct ieee80211_vif *vif,
870 const u8 *addr)
871 {
872 struct vnt_private *priv = hw->priv;
873
874 /* Set max sensitivity*/
875 vnt_update_pre_ed_threshold(priv, true);
876 }
877
878 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
879 struct ieee80211_vif *vif)
880 {
881 struct vnt_private *priv = hw->priv;
882
883 /* Return sensitivity to channel level*/
884 vnt_update_pre_ed_threshold(priv, false);
885 }
886
887 static int vnt_get_stats(struct ieee80211_hw *hw,
888 struct ieee80211_low_level_stats *stats)
889 {
890 struct vnt_private *priv = hw->priv;
891
892 memcpy(stats, &priv->low_stats, sizeof(*stats));
893
894 return 0;
895 }
896
897 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
898 {
899 struct vnt_private *priv = hw->priv;
900
901 return priv->current_tsf;
902 }
903
904 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
905 u64 tsf)
906 {
907 struct vnt_private *priv = hw->priv;
908
909 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
910 }
911
912 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
913 {
914 struct vnt_private *priv = hw->priv;
915
916 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
917
918 vnt_clear_current_tsf(priv);
919 }
920
921 static const struct ieee80211_ops vnt_mac_ops = {
922 .tx = vnt_tx_80211,
923 .start = vnt_start,
924 .stop = vnt_stop,
925 .add_interface = vnt_add_interface,
926 .remove_interface = vnt_remove_interface,
927 .config = vnt_config,
928 .bss_info_changed = vnt_bss_info_changed,
929 .prepare_multicast = vnt_prepare_multicast,
930 .configure_filter = vnt_configure,
931 .set_key = vnt_set_key,
932 .sw_scan_start = vnt_sw_scan_start,
933 .sw_scan_complete = vnt_sw_scan_complete,
934 .get_stats = vnt_get_stats,
935 .get_tsf = vnt_get_tsf,
936 .set_tsf = vnt_set_tsf,
937 .reset_tsf = vnt_reset_tsf,
938 };
939
940 int vnt_init(struct vnt_private *priv)
941 {
942 if (vnt_init_registers(priv))
943 return -EAGAIN;
944
945 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
946
947 vnt_init_bands(priv);
948
949 if (ieee80211_register_hw(priv->hw))
950 return -ENODEV;
951
952 priv->mac_hw = true;
953
954 vnt_radio_power_off(priv);
955
956 return 0;
957 }
958
959 static int
960 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
961 {
962 struct usb_device *udev;
963 struct vnt_private *priv;
964 struct ieee80211_hw *hw;
965 struct wiphy *wiphy;
966 int rc;
967
968 udev = usb_get_dev(interface_to_usbdev(intf));
969
970 dev_notice(&udev->dev, "%s Ver. %s\n",
971 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
972 dev_notice(&udev->dev,
973 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
974
975 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
976 if (!hw) {
977 dev_err(&udev->dev, "could not register ieee80211_hw\n");
978 rc = -ENOMEM;
979 goto err_nomem;
980 }
981
982 priv = hw->priv;
983 priv->hw = hw;
984 priv->usb = udev;
985 priv->intf = intf;
986
987 vnt_set_options(priv);
988
989 spin_lock_init(&priv->lock);
990 mutex_init(&priv->usb_lock);
991
992 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
993
994 usb_set_intfdata(intf, priv);
995
996 wiphy = priv->hw->wiphy;
997
998 wiphy->frag_threshold = FRAG_THRESH_DEF;
999 wiphy->rts_threshold = RTS_THRESH_DEF;
1000 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1001 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1002
1003 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1004 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1005 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1006 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1007 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1008 ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
1009
1010 priv->hw->max_signal = 100;
1011
1012 SET_IEEE80211_DEV(priv->hw, &intf->dev);
1013
1014 rc = usb_reset_device(priv->usb);
1015 if (rc)
1016 dev_warn(&priv->usb->dev,
1017 "%s reset fail status=%d\n", __func__, rc);
1018
1019 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1020 vnt_reset_command_timer(priv);
1021
1022 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1023
1024 return 0;
1025
1026 err_nomem:
1027 usb_put_dev(udev);
1028
1029 return rc;
1030 }
1031
1032 static void vt6656_disconnect(struct usb_interface *intf)
1033 {
1034 struct vnt_private *priv = usb_get_intfdata(intf);
1035
1036 if (!priv)
1037 return;
1038
1039 if (priv->mac_hw)
1040 ieee80211_unregister_hw(priv->hw);
1041
1042 usb_set_intfdata(intf, NULL);
1043 usb_put_dev(interface_to_usbdev(intf));
1044
1045 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1046
1047 ieee80211_free_hw(priv->hw);
1048 }
1049
1050 #ifdef CONFIG_PM
1051
1052 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1053 {
1054 return 0;
1055 }
1056
1057 static int vt6656_resume(struct usb_interface *intf)
1058 {
1059 return 0;
1060 }
1061
1062 #endif /* CONFIG_PM */
1063
1064 MODULE_DEVICE_TABLE(usb, vt6656_table);
1065
1066 static struct usb_driver vt6656_driver = {
1067 .name = DEVICE_NAME,
1068 .probe = vt6656_probe,
1069 .disconnect = vt6656_disconnect,
1070 .id_table = vt6656_table,
1071 #ifdef CONFIG_PM
1072 .suspend = vt6656_suspend,
1073 .resume = vt6656_resume,
1074 #endif /* CONFIG_PM */
1075 };
1076
1077 module_usb_driver(vt6656_driver);
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