1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 * Purpose: driver entry for initial, open, close, tx and rx.
7 *
8 * Author: Lyndon Chen
9 *
10 * Date: Dec 8, 2005
11 *
12 * Functions:
13 *
14 * vt6656_probe - module initial (insmod) driver entry
15 * vnt_free_tx_bufs - free tx buffer function
16 * vnt_init_registers- initial MAC & BBP & RF internal registers.
17 *
18 * Revision History:
19 */
20 #undef __NO_VERSION__
21
22 #include <linux/bits.h>
23 #include <linux/etherdevice.h>
24 #include <linux/file.h>
25 #include <linux/kernel.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 "rf.h"
34 #include "usbpipe.h"
35 #include "channel.h"
36
37 /*
38 * define module options
39 */
40
41 /* version information */
42 #define DRIVER_AUTHOR \
43 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
44 MODULE_AUTHOR(DRIVER_AUTHOR);
45 MODULE_LICENSE("GPL");
46 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
47
48 #define RX_DESC_DEF0 64
49 static int vnt_rx_buffers = RX_DESC_DEF0;
50 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
51 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
52
53 #define TX_DESC_DEF0 64
54 static int vnt_tx_buffers = TX_DESC_DEF0;
55 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
56 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
57
58 #define RTS_THRESH_DEF 2347
59 #define FRAG_THRESH_DEF 2346
60
61 /* BasebandType[] baseband type selected
62 * 0: indicate 802.11a type
63 * 1: indicate 802.11b type
64 * 2: indicate 802.11g type
65 */
66
67 #define BBP_TYPE_DEF 2
68
69 /*
70 * Static vars definitions
71 */
72
73 static const struct usb_device_id vt6656_table[] = {
74 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
75 {}
76 };
77
vnt_set_options(struct vnt_private * priv)78 static void vnt_set_options(struct vnt_private *priv)
79 {
80 /* Set number of TX buffers */
81 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
82 priv->num_tx_context = TX_DESC_DEF0;
83 else
84 priv->num_tx_context = vnt_tx_buffers;
85
86 /* Set number of RX buffers */
87 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
88 priv->num_rcb = RX_DESC_DEF0;
89 else
90 priv->num_rcb = vnt_rx_buffers;
91
92 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
93 priv->bb_type = BBP_TYPE_DEF;
94 priv->packet_type = priv->bb_type;
95 priv->preamble_type = PREAMBLE_LONG;
96 priv->exist_sw_net_addr = false;
97 }
98
vnt_download_firmware(struct vnt_private * priv)99 static int vnt_download_firmware(struct vnt_private *priv)
100 {
101 struct device *dev = &priv->usb->dev;
102 const struct firmware *fw;
103 u16 length;
104 int ii;
105 int ret = 0;
106
107 dev_dbg(dev, "---->Download firmware\n");
108
109 ret = request_firmware(&fw, FIRMWARE_NAME, dev);
110 if (ret) {
111 dev_err(dev, "firmware file %s request failed (%d)\n",
112 FIRMWARE_NAME, ret);
113 goto end;
114 }
115
116 for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
117 length = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
118
119 ret = vnt_control_out(priv, 0, 0x1200 + ii, 0x0000, length,
120 fw->data + ii);
121 if (ret)
122 goto free_fw;
123
124 dev_dbg(dev, "Download firmware...%d %zu\n", ii, fw->size);
125 }
126
127 free_fw:
128 release_firmware(fw);
129 end:
130 return ret;
131 }
132
vnt_firmware_branch_to_sram(struct vnt_private * priv)133 static int vnt_firmware_branch_to_sram(struct vnt_private *priv)
134 {
135 dev_dbg(&priv->usb->dev, "---->Branch to Sram\n");
136
137 return vnt_control_out(priv, 1, 0x1200, 0x0000, 0, NULL);
138 }
139
vnt_check_firmware_version(struct vnt_private * priv)140 static int vnt_check_firmware_version(struct vnt_private *priv)
141 {
142 int ret = 0;
143
144 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, 0,
145 MESSAGE_REQUEST_VERSION, 2,
146 (u8 *)&priv->firmware_version);
147 if (ret) {
148 dev_dbg(&priv->usb->dev,
149 "Could not get firmware version: %d.\n", ret);
150 goto end;
151 }
152
153 dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
154 priv->firmware_version);
155
156 if (priv->firmware_version == 0xFFFF) {
157 dev_dbg(&priv->usb->dev, "In Loader.\n");
158 ret = -EINVAL;
159 goto end;
160 }
161
162 if (priv->firmware_version < FIRMWARE_VERSION) {
163 /* branch to loader for download new firmware */
164 ret = vnt_firmware_branch_to_sram(priv);
165 if (ret) {
166 dev_dbg(&priv->usb->dev,
167 "Could not branch to SRAM: %d.\n", ret);
168 } else {
169 ret = -EINVAL;
170 }
171 }
172
173 end:
174 return ret;
175 }
176
177 /*
178 * initialization of MAC & BBP registers
179 */
vnt_init_registers(struct vnt_private * priv)180 static int vnt_init_registers(struct vnt_private *priv)
181 {
182 int ret;
183 struct vnt_cmd_card_init *init_cmd = &priv->init_command;
184 struct vnt_rsp_card_init *init_rsp = &priv->init_response;
185 u8 antenna;
186 int ii;
187 u8 tmp;
188 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
189
190 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
191 DEVICE_INIT_COLD, priv->packet_type);
192
193 ret = vnt_check_firmware_version(priv);
194 if (ret) {
195 ret = vnt_download_firmware(priv);
196 if (ret) {
197 dev_dbg(&priv->usb->dev,
198 "Could not download firmware: %d.\n", ret);
199 goto end;
200 }
201
202 ret = vnt_firmware_branch_to_sram(priv);
203 if (ret) {
204 dev_dbg(&priv->usb->dev,
205 "Could not branch to SRAM: %d.\n", ret);
206 goto end;
207 }
208 }
209
210 ret = vnt_vt3184_init(priv);
211 if (ret) {
212 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
213 goto end;
214 }
215
216 init_cmd->init_class = DEVICE_INIT_COLD;
217 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
218 for (ii = 0; ii < ARRAY_SIZE(init_cmd->sw_net_addr); ii++)
219 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
220 init_cmd->short_retry_limit = priv->hw->wiphy->retry_short;
221 init_cmd->long_retry_limit = priv->hw->wiphy->retry_long;
222
223 /* issue card_init command to device */
224 ret = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
225 sizeof(struct vnt_cmd_card_init),
226 (u8 *)init_cmd);
227 if (ret) {
228 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
229 goto end;
230 }
231
232 ret = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
233 sizeof(struct vnt_rsp_card_init),
234 (u8 *)init_rsp);
235 if (ret) {
236 dev_dbg(&priv->usb->dev, "Cardinit request in status fail!\n");
237 goto end;
238 }
239
240 /* local ID for AES functions */
241 ret = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
242 MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
243 if (ret)
244 goto end;
245
246 /* do MACbSoftwareReset in MACvInitialize */
247
248 priv->top_ofdm_basic_rate = RATE_24M;
249 priv->top_cck_basic_rate = RATE_1M;
250
251 /* target to IF pin while programming to RF chip */
252 priv->power = 0xFF;
253
254 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
255 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
256 /* load power table */
257 for (ii = 0; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
258 priv->cck_pwr_tbl[ii] =
259 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
260 if (priv->cck_pwr_tbl[ii] == 0)
261 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
262
263 priv->ofdm_pwr_tbl[ii] =
264 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
265 if (priv->ofdm_pwr_tbl[ii] == 0)
266 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
267 }
268
269 /*
270 * original zonetype is USA, but custom zonetype is Europe,
271 * then need to recover 12, 13, 14 channels with 11 channel
272 */
273 for (ii = 11; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
274 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
275 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
276 }
277
278 priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
279
280 /* load OFDM A power table */
281 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
282 priv->ofdm_a_pwr_tbl[ii] =
283 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
284
285 if (priv->ofdm_a_pwr_tbl[ii] == 0)
286 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
287 }
288
289 antenna = priv->eeprom[EEP_OFS_ANTENNA];
290
291 if (antenna & EEP_ANTINV)
292 priv->tx_rx_ant_inv = true;
293 else
294 priv->tx_rx_ant_inv = false;
295
296 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
297
298 if (antenna == 0) /* if not set default is both */
299 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
300
301 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
302 priv->tx_antenna_mode = ANT_B;
303 priv->rx_antenna_sel = 1;
304
305 if (priv->tx_rx_ant_inv)
306 priv->rx_antenna_mode = ANT_A;
307 else
308 priv->rx_antenna_mode = ANT_B;
309 } else {
310 priv->rx_antenna_sel = 0;
311
312 if (antenna & EEP_ANTENNA_AUX) {
313 priv->tx_antenna_mode = ANT_A;
314
315 if (priv->tx_rx_ant_inv)
316 priv->rx_antenna_mode = ANT_B;
317 else
318 priv->rx_antenna_mode = ANT_A;
319 } else {
320 priv->tx_antenna_mode = ANT_B;
321
322 if (priv->tx_rx_ant_inv)
323 priv->rx_antenna_mode = ANT_A;
324 else
325 priv->rx_antenna_mode = ANT_B;
326 }
327 }
328
329 /* Set initial antenna mode */
330 ret = vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
331 if (ret)
332 goto end;
333
334 /* default Auto Mode */
335 priv->bb_type = BB_TYPE_11G;
336
337 /* get RFType */
338 priv->rf_type = init_rsp->rf_type;
339
340 /* load vt3266 calibration parameters in EEPROM */
341 if (priv->rf_type == RF_VT3226D0) {
342 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
343 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
344 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
345 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
346 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
347 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
348 /* CR255, enable TX/RX IQ and
349 * DC compensation mode
350 */
351 ret = vnt_control_out_u8(priv,
352 MESSAGE_REQUEST_BBREG,
353 0xff, 0x03);
354 if (ret)
355 goto end;
356
357 /* CR251, TX I/Q Imbalance Calibration */
358 ret = vnt_control_out_u8(priv,
359 MESSAGE_REQUEST_BBREG,
360 0xfb, calib_tx_iq);
361 if (ret)
362 goto end;
363
364 /* CR252, TX DC-Offset Calibration */
365 ret = vnt_control_out_u8(priv,
366 MESSAGE_REQUEST_BBREG,
367 0xfC, calib_tx_dc);
368 if (ret)
369 goto end;
370
371 /* CR253, RX I/Q Imbalance Calibration */
372 ret = vnt_control_out_u8(priv,
373 MESSAGE_REQUEST_BBREG,
374 0xfd, calib_rx_iq);
375 if (ret)
376 goto end;
377 } else {
378 /* CR255, turn off
379 * BB Calibration compensation
380 */
381 ret = vnt_control_out_u8(priv,
382 MESSAGE_REQUEST_BBREG,
383 0xff, 0x0);
384 if (ret)
385 goto end;
386 }
387 }
388 }
389
390 /* get permanent network address */
391 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
392 ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
393
394 /* if exist SW network address, use it */
395 dev_dbg(&priv->usb->dev, "Network address = %pM\n",
396 priv->current_net_addr);
397
398 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
399
400 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
401 ret = vnt_control_in(priv, MESSAGE_TYPE_READ,
402 MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG,
403 1, &tmp);
404 if (ret)
405 goto end;
406
407 if ((tmp & GPIO3_DATA) == 0) {
408 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
409 GPIO3_INTMD);
410 } else {
411 ret = vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
412 GPIO3_INTMD);
413 }
414
415 if (ret)
416 goto end;
417 }
418
419 ret = vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
420 if (ret)
421 goto end;
422
423 ret = vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
424 if (ret)
425 goto end;
426
427 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, BIT(0));
428 if (ret)
429 goto end;
430
431 ret = vnt_radio_power_on(priv);
432 if (ret)
433 goto end;
434
435 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
436
437 end:
438 return ret;
439 }
440
vnt_free_tx_bufs(struct vnt_private * priv)441 static void vnt_free_tx_bufs(struct vnt_private *priv)
442 {
443 struct vnt_usb_send_context *tx_context;
444 int ii;
445
446 usb_kill_anchored_urbs(&priv->tx_submitted);
447
448 for (ii = 0; ii < priv->num_tx_context; ii++) {
449 tx_context = priv->tx_context[ii];
450 if (!tx_context)
451 continue;
452
453 kfree(tx_context);
454 }
455 }
456
vnt_free_rx_bufs(struct vnt_private * priv)457 static void vnt_free_rx_bufs(struct vnt_private *priv)
458 {
459 struct vnt_rcb *rcb;
460 int ii;
461
462 for (ii = 0; ii < priv->num_rcb; ii++) {
463 rcb = priv->rcb[ii];
464 if (!rcb)
465 continue;
466
467 /* deallocate URBs */
468 if (rcb->urb) {
469 usb_kill_urb(rcb->urb);
470 usb_free_urb(rcb->urb);
471 }
472
473 /* deallocate skb */
474 if (rcb->skb)
475 dev_kfree_skb(rcb->skb);
476
477 kfree(rcb);
478 }
479 }
480
vnt_free_int_bufs(struct vnt_private * priv)481 static void vnt_free_int_bufs(struct vnt_private *priv)
482 {
483 kfree(priv->int_buf.data_buf);
484 }
485
vnt_alloc_bufs(struct vnt_private * priv)486 static int vnt_alloc_bufs(struct vnt_private *priv)
487 {
488 int ret;
489 struct vnt_usb_send_context *tx_context;
490 struct vnt_rcb *rcb;
491 int ii;
492
493 init_usb_anchor(&priv->tx_submitted);
494
495 for (ii = 0; ii < priv->num_tx_context; ii++) {
496 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
497 if (!tx_context) {
498 ret = -ENOMEM;
499 goto free_tx;
500 }
501
502 priv->tx_context[ii] = tx_context;
503 tx_context->priv = priv;
504 tx_context->pkt_no = ii;
505 tx_context->in_use = false;
506 }
507
508 for (ii = 0; ii < priv->num_rcb; ii++) {
509 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
510 if (!priv->rcb[ii]) {
511 ret = -ENOMEM;
512 goto free_rx_tx;
513 }
514
515 rcb = priv->rcb[ii];
516
517 rcb->priv = priv;
518
519 /* allocate URBs */
520 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
521 if (!rcb->urb) {
522 ret = -ENOMEM;
523 goto free_rx_tx;
524 }
525
526 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
527 if (!rcb->skb) {
528 ret = -ENOMEM;
529 goto free_rx_tx;
530 }
531 /* submit rx urb */
532 ret = vnt_submit_rx_urb(priv, rcb);
533 if (ret)
534 goto free_rx_tx;
535 }
536
537 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
538 if (!priv->interrupt_urb) {
539 ret = -ENOMEM;
540 goto free_rx_tx;
541 }
542
543 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
544 if (!priv->int_buf.data_buf) {
545 ret = -ENOMEM;
546 goto free_rx_tx_urb;
547 }
548
549 return 0;
550
551 free_rx_tx_urb:
552 usb_free_urb(priv->interrupt_urb);
553 free_rx_tx:
554 vnt_free_rx_bufs(priv);
555 free_tx:
556 vnt_free_tx_bufs(priv);
557 return ret;
558 }
559
vnt_tx_80211(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)560 static void vnt_tx_80211(struct ieee80211_hw *hw,
561 struct ieee80211_tx_control *control,
562 struct sk_buff *skb)
563 {
564 struct vnt_private *priv = hw->priv;
565
566 if (vnt_tx_packet(priv, skb))
567 ieee80211_free_txskb(hw, skb);
568 }
569
vnt_start(struct ieee80211_hw * hw)570 static int vnt_start(struct ieee80211_hw *hw)
571 {
572 int ret;
573 struct vnt_private *priv = hw->priv;
574
575 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
576
577 ret = vnt_alloc_bufs(priv);
578 if (ret) {
579 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
580 goto err;
581 }
582
583 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
584
585 ret = vnt_init_registers(priv);
586 if (ret) {
587 dev_dbg(&priv->usb->dev, " init register fail\n");
588 goto free_all;
589 }
590
591 ret = vnt_key_init_table(priv);
592 if (ret)
593 goto free_all;
594
595 priv->int_interval = 1; /* bInterval is set to 1 */
596
597 ret = vnt_start_interrupt_urb(priv);
598 if (ret)
599 goto free_all;
600
601 ieee80211_wake_queues(hw);
602
603 return 0;
604
605 free_all:
606 vnt_free_rx_bufs(priv);
607 vnt_free_tx_bufs(priv);
608 vnt_free_int_bufs(priv);
609
610 usb_kill_urb(priv->interrupt_urb);
611 usb_free_urb(priv->interrupt_urb);
612 err:
613 return ret;
614 }
615
vnt_stop(struct ieee80211_hw * hw)616 static void vnt_stop(struct ieee80211_hw *hw)
617 {
618 struct vnt_private *priv = hw->priv;
619 int i;
620
621 if (!priv)
622 return;
623
624 for (i = 0; i < MAX_KEY_TABLE; i++)
625 vnt_mac_disable_keyentry(priv, i);
626
627 /* clear all keys */
628 priv->key_entry_inuse = 0;
629
630 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
631 vnt_mac_shutdown(priv);
632
633 ieee80211_stop_queues(hw);
634
635 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
636
637 cancel_delayed_work_sync(&priv->run_command_work);
638
639 priv->cmd_running = false;
640
641 vnt_free_tx_bufs(priv);
642 vnt_free_rx_bufs(priv);
643 vnt_free_int_bufs(priv);
644
645 usb_kill_urb(priv->interrupt_urb);
646 usb_free_urb(priv->interrupt_urb);
647 }
648
vnt_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)649 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
650 {
651 struct vnt_private *priv = hw->priv;
652
653 priv->vif = vif;
654
655 switch (vif->type) {
656 case NL80211_IFTYPE_STATION:
657 break;
658 case NL80211_IFTYPE_ADHOC:
659 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
660
661 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
662
663 break;
664 case NL80211_IFTYPE_AP:
665 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
666
667 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
668
669 break;
670 default:
671 return -EOPNOTSUPP;
672 }
673
674 priv->op_mode = vif->type;
675
676 /* LED blink on TX */
677 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
678
679 return 0;
680 }
681
vnt_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)682 static void vnt_remove_interface(struct ieee80211_hw *hw,
683 struct ieee80211_vif *vif)
684 {
685 struct vnt_private *priv = hw->priv;
686
687 switch (vif->type) {
688 case NL80211_IFTYPE_STATION:
689 break;
690 case NL80211_IFTYPE_ADHOC:
691 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
692 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
693 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
694 break;
695 case NL80211_IFTYPE_AP:
696 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
697 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
698 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
699 break;
700 default:
701 break;
702 }
703
704 vnt_radio_power_off(priv);
705
706 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
707
708 /* LED slow blink */
709 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
710 }
711
vnt_config(struct ieee80211_hw * hw,u32 changed)712 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
713 {
714 struct vnt_private *priv = hw->priv;
715 struct ieee80211_conf *conf = &hw->conf;
716
717 if (changed & IEEE80211_CONF_CHANGE_PS) {
718 if (conf->flags & IEEE80211_CONF_PS)
719 vnt_enable_power_saving(priv, conf->listen_interval);
720 else
721 vnt_disable_power_saving(priv);
722 }
723
724 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
725 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
726 vnt_set_channel(priv, conf->chandef.chan->hw_value);
727
728 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
729 priv->bb_type = BB_TYPE_11A;
730 else
731 priv->bb_type = BB_TYPE_11G;
732 }
733
734 if (changed & IEEE80211_CONF_CHANGE_POWER)
735 vnt_rf_setpower(priv, conf->chandef.chan);
736
737 if (conf->flags & (IEEE80211_CONF_OFFCHANNEL | IEEE80211_CONF_IDLE))
738 /* Set max sensitivity*/
739 vnt_update_pre_ed_threshold(priv, true);
740 else
741 vnt_update_pre_ed_threshold(priv, false);
742
743 return 0;
744 }
745
vnt_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * conf,u64 changed)746 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
747 struct ieee80211_vif *vif,
748 struct ieee80211_bss_conf *conf, u64 changed)
749 {
750 struct vnt_private *priv = hw->priv;
751
752 priv->current_aid = vif->cfg.aid;
753
754 if (changed & BSS_CHANGED_BSSID && conf->bssid)
755 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
756
757 if (changed & BSS_CHANGED_BASIC_RATES) {
758 priv->basic_rates = conf->basic_rates;
759
760 vnt_update_top_rates(priv);
761
762 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
763 }
764
765 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
766 if (conf->use_short_preamble) {
767 vnt_mac_enable_barker_preamble_mode(priv);
768 priv->preamble_type = PREAMBLE_SHORT;
769 } else {
770 vnt_mac_disable_barker_preamble_mode(priv);
771 priv->preamble_type = PREAMBLE_LONG;
772 }
773 }
774
775 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
776 if (conf->use_cts_prot)
777 vnt_mac_enable_protect_mode(priv);
778 else
779 vnt_mac_disable_protect_mode(priv);
780 }
781
782 if (changed & BSS_CHANGED_ERP_SLOT) {
783 if (conf->use_short_slot)
784 priv->short_slot_time = true;
785 else
786 priv->short_slot_time = false;
787
788 vnt_set_short_slot_time(priv);
789 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
790 }
791
792 if (changed & (BSS_CHANGED_BASIC_RATES | BSS_CHANGED_ERP_PREAMBLE |
793 BSS_CHANGED_ERP_SLOT))
794 vnt_set_bss_mode(priv);
795
796 if (changed & (BSS_CHANGED_TXPOWER | BSS_CHANGED_BANDWIDTH))
797 vnt_rf_setpower(priv, conf->chandef.chan);
798
799 if (changed & BSS_CHANGED_BEACON_ENABLED) {
800 dev_dbg(&priv->usb->dev,
801 "Beacon enable %d\n", conf->enable_beacon);
802
803 if (conf->enable_beacon) {
804 vnt_beacon_enable(priv, vif, conf);
805
806 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
807 } else {
808 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
809 }
810 }
811
812 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
813 priv->op_mode != NL80211_IFTYPE_AP) {
814 if (vif->cfg.assoc && conf->beacon_rate) {
815 u16 ps_beacon_int = conf->beacon_int;
816
817 if (conf->dtim_period)
818 ps_beacon_int *= conf->dtim_period;
819 else if (hw->conf.listen_interval)
820 ps_beacon_int *= hw->conf.listen_interval;
821
822 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
823 TFTCTL_TSFCNTREN);
824
825 vnt_mac_set_beacon_interval(priv, ps_beacon_int);
826
827 vnt_reset_next_tbtt(priv, conf->beacon_int);
828
829 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
830 conf->sync_tsf, priv->current_tsf);
831
832 vnt_update_next_tbtt(priv,
833 conf->sync_tsf, ps_beacon_int);
834 } else {
835 vnt_clear_current_tsf(priv);
836
837 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
838 TFTCTL_TSFCNTREN);
839 }
840 }
841 }
842
vnt_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)843 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
844 struct netdev_hw_addr_list *mc_list)
845 {
846 struct vnt_private *priv = hw->priv;
847 struct netdev_hw_addr *ha;
848 u64 mc_filter = 0;
849 u32 bit_nr;
850
851 netdev_hw_addr_list_for_each(ha, mc_list) {
852 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
853 mc_filter |= BIT_ULL(bit_nr);
854 }
855
856 priv->mc_list_count = mc_list->count;
857
858 return mc_filter;
859 }
860
vnt_configure(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)861 static void vnt_configure(struct ieee80211_hw *hw,
862 unsigned int changed_flags,
863 unsigned int *total_flags, u64 multicast)
864 {
865 struct vnt_private *priv = hw->priv;
866 u8 rx_mode = 0;
867
868 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
869
870 vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
871 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
872
873 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
874
875 if (changed_flags & FIF_ALLMULTI) {
876 if (*total_flags & FIF_ALLMULTI) {
877 if (priv->mc_list_count > 2)
878 vnt_mac_set_filter(priv, ~0);
879 else
880 vnt_mac_set_filter(priv, multicast);
881
882 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
883 } else {
884 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
885 }
886 }
887
888 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
889 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
890 rx_mode &= ~RCR_BSSID;
891 else
892 rx_mode |= RCR_BSSID;
893 }
894
895 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
896
897 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
898 }
899
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)900 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
901 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
902 struct ieee80211_key_conf *key)
903 {
904 struct vnt_private *priv = hw->priv;
905
906 switch (cmd) {
907 case SET_KEY:
908 return vnt_set_keys(hw, sta, vif, key);
909 case DISABLE_KEY:
910 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse)) {
911 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
912
913 vnt_mac_disable_keyentry(priv, key->hw_key_idx);
914 }
915 break;
916
917 default:
918 break;
919 }
920
921 return 0;
922 }
923
vnt_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)924 static int vnt_get_stats(struct ieee80211_hw *hw,
925 struct ieee80211_low_level_stats *stats)
926 {
927 struct vnt_private *priv = hw->priv;
928
929 memcpy(stats, &priv->low_stats, sizeof(*stats));
930
931 return 0;
932 }
933
vnt_get_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)934 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
935 {
936 struct vnt_private *priv = hw->priv;
937
938 return priv->current_tsf;
939 }
940
vnt_set_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u64 tsf)941 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
942 u64 tsf)
943 {
944 struct vnt_private *priv = hw->priv;
945
946 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
947 }
948
vnt_reset_tsf(struct ieee80211_hw * hw,struct ieee80211_vif * vif)949 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
950 {
951 struct vnt_private *priv = hw->priv;
952
953 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
954
955 vnt_clear_current_tsf(priv);
956 }
957
958 static const struct ieee80211_ops vnt_mac_ops = {
959 .tx = vnt_tx_80211,
960 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
961 .start = vnt_start,
962 .stop = vnt_stop,
963 .add_interface = vnt_add_interface,
964 .remove_interface = vnt_remove_interface,
965 .config = vnt_config,
966 .bss_info_changed = vnt_bss_info_changed,
967 .prepare_multicast = vnt_prepare_multicast,
968 .configure_filter = vnt_configure,
969 .set_key = vnt_set_key,
970 .get_stats = vnt_get_stats,
971 .get_tsf = vnt_get_tsf,
972 .set_tsf = vnt_set_tsf,
973 .reset_tsf = vnt_reset_tsf,
974 };
975
vnt_init(struct vnt_private * priv)976 int vnt_init(struct vnt_private *priv)
977 {
978 if (vnt_init_registers(priv))
979 return -EAGAIN;
980
981 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
982
983 vnt_init_bands(priv);
984
985 if (ieee80211_register_hw(priv->hw))
986 return -ENODEV;
987
988 priv->mac_hw = true;
989
990 vnt_radio_power_off(priv);
991
992 return 0;
993 }
994
995 static int
vt6656_probe(struct usb_interface * intf,const struct usb_device_id * id)996 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
997 {
998 struct usb_device *udev;
999 struct vnt_private *priv;
1000 struct ieee80211_hw *hw;
1001 struct wiphy *wiphy;
1002 int rc;
1003
1004 udev = usb_get_dev(interface_to_usbdev(intf));
1005
1006 dev_notice(&udev->dev, "%s Ver. %s\n",
1007 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1008 dev_notice(&udev->dev,
1009 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
1010
1011 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
1012 if (!hw) {
1013 dev_err(&udev->dev, "could not register ieee80211_hw\n");
1014 rc = -ENOMEM;
1015 goto err_nomem;
1016 }
1017
1018 priv = hw->priv;
1019 priv->hw = hw;
1020 priv->usb = udev;
1021 priv->intf = intf;
1022
1023 vnt_set_options(priv);
1024
1025 spin_lock_init(&priv->lock);
1026 mutex_init(&priv->usb_lock);
1027
1028 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
1029
1030 usb_set_intfdata(intf, priv);
1031
1032 wiphy = priv->hw->wiphy;
1033
1034 wiphy->frag_threshold = FRAG_THRESH_DEF;
1035 wiphy->rts_threshold = RTS_THRESH_DEF;
1036 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1037 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1038
1039 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1040 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1041 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1042 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1043 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1044 ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
1045
1046 priv->hw->extra_tx_headroom =
1047 sizeof(struct vnt_tx_buffer) + sizeof(struct vnt_tx_usb_header);
1048 priv->hw->max_signal = 100;
1049
1050 SET_IEEE80211_DEV(priv->hw, &intf->dev);
1051
1052 rc = usb_reset_device(priv->usb);
1053 if (rc)
1054 dev_warn(&priv->usb->dev,
1055 "%s reset fail status=%d\n", __func__, rc);
1056
1057 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1058 vnt_reset_command_timer(priv);
1059
1060 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1061
1062 return 0;
1063
1064 err_nomem:
1065 usb_put_dev(udev);
1066
1067 return rc;
1068 }
1069
vt6656_disconnect(struct usb_interface * intf)1070 static void vt6656_disconnect(struct usb_interface *intf)
1071 {
1072 struct vnt_private *priv = usb_get_intfdata(intf);
1073
1074 if (!priv)
1075 return;
1076
1077 if (priv->mac_hw)
1078 ieee80211_unregister_hw(priv->hw);
1079
1080 usb_set_intfdata(intf, NULL);
1081 usb_put_dev(interface_to_usbdev(intf));
1082
1083 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1084
1085 ieee80211_free_hw(priv->hw);
1086 }
1087
1088 #ifdef CONFIG_PM
1089
vt6656_suspend(struct usb_interface * intf,pm_message_t message)1090 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1091 {
1092 return 0;
1093 }
1094
vt6656_resume(struct usb_interface * intf)1095 static int vt6656_resume(struct usb_interface *intf)
1096 {
1097 return 0;
1098 }
1099
1100 #endif /* CONFIG_PM */
1101
1102 MODULE_DEVICE_TABLE(usb, vt6656_table);
1103
1104 static struct usb_driver vt6656_driver = {
1105 .name = DEVICE_NAME,
1106 .probe = vt6656_probe,
1107 .disconnect = vt6656_disconnect,
1108 .id_table = vt6656_table,
1109 #ifdef CONFIG_PM
1110 .suspend = vt6656_suspend,
1111 .resume = vt6656_resume,
1112 #endif /* CONFIG_PM */
1113 };
1114
1115 module_usb_driver(vt6656_driver);
1116
1117 MODULE_FIRMWARE(FIRMWARE_NAME);
1118