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[mirror_ubuntu-bionic-kernel.git] / drivers / staging / vt6656 / main_usb.c
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 *
16 * File: main_usb.c
17 *
18 * Purpose: driver entry for initial, open, close, tx and rx.
19 *
20 * Author: Lyndon Chen
21 *
22 * Date: Dec 8, 2005
23 *
24 * Functions:
25 *
26 * vt6656_probe - module initial (insmod) driver entry
27 * vnt_free_tx_bufs - free tx buffer function
28 * vnt_init_registers- initial MAC & BBP & RF internal registers.
29 *
30 * Revision History:
31 */
32 #undef __NO_VERSION__
33
34 #include <linux/etherdevice.h>
35 #include <linux/file.h>
36 #include "device.h"
37 #include "card.h"
38 #include "baseband.h"
39 #include "mac.h"
40 #include "power.h"
41 #include "wcmd.h"
42 #include "rxtx.h"
43 #include "dpc.h"
44 #include "rf.h"
45 #include "firmware.h"
46 #include "usbpipe.h"
47 #include "channel.h"
48 #include "int.h"
49
50 /*
51 * define module options
52 */
53
54 /* version information */
55 #define DRIVER_AUTHOR \
56 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
57 MODULE_AUTHOR(DRIVER_AUTHOR);
58 MODULE_LICENSE("GPL");
59 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
60
61 #define RX_DESC_DEF0 64
62 static int vnt_rx_buffers = RX_DESC_DEF0;
63 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
64 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
65
66 #define TX_DESC_DEF0 64
67 static int vnt_tx_buffers = TX_DESC_DEF0;
68 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
69 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
70
71 #define RTS_THRESH_DEF 2347
72 #define FRAG_THRESH_DEF 2346
73 #define SHORT_RETRY_DEF 8
74 #define LONG_RETRY_DEF 4
75
76 /* BasebandType[] baseband type selected
77 * 0: indicate 802.11a type
78 * 1: indicate 802.11b type
79 * 2: indicate 802.11g type
80 */
81
82 #define BBP_TYPE_DEF 2
83
84 /*
85 * Static vars definitions
86 */
87
88 static const struct usb_device_id vt6656_table[] = {
89 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
90 {}
91 };
92
93 static void vnt_set_options(struct vnt_private *priv)
94 {
95 /* Set number of TX buffers */
96 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
97 priv->num_tx_context = TX_DESC_DEF0;
98 else
99 priv->num_tx_context = vnt_tx_buffers;
100
101 /* Set number of RX buffers */
102 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
103 priv->num_rcb = RX_DESC_DEF0;
104 else
105 priv->num_rcb = vnt_rx_buffers;
106
107 priv->short_retry_limit = SHORT_RETRY_DEF;
108 priv->long_retry_limit = LONG_RETRY_DEF;
109 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
110 priv->bb_type = BBP_TYPE_DEF;
111 priv->packet_type = priv->bb_type;
112 priv->auto_fb_ctrl = AUTO_FB_0;
113 priv->preamble_type = 0;
114 priv->exist_sw_net_addr = false;
115 }
116
117 /*
118 * initialization of MAC & BBP registers
119 */
120 static int vnt_init_registers(struct vnt_private *priv)
121 {
122 struct vnt_cmd_card_init *init_cmd = &priv->init_command;
123 struct vnt_rsp_card_init *init_rsp = &priv->init_response;
124 u8 antenna;
125 int ii;
126 int status = STATUS_SUCCESS;
127 u8 tmp;
128 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
129
130 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
131 DEVICE_INIT_COLD, priv->packet_type);
132
133 if (!vnt_check_firmware_version(priv)) {
134 if (vnt_download_firmware(priv) == true) {
135 if (vnt_firmware_branch_to_sram(priv) == false) {
136 dev_dbg(&priv->usb->dev,
137 " vnt_firmware_branch_to_sram fail\n");
138 return false;
139 }
140 } else {
141 dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
142 return false;
143 }
144 }
145
146 if (!vnt_vt3184_init(priv)) {
147 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
148 return false;
149 }
150
151 init_cmd->init_class = DEVICE_INIT_COLD;
152 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
153 for (ii = 0; ii < 6; ii++)
154 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
155 init_cmd->short_retry_limit = priv->short_retry_limit;
156 init_cmd->long_retry_limit = priv->long_retry_limit;
157
158 /* issue card_init command to device */
159 status = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
160 sizeof(struct vnt_cmd_card_init),
161 (u8 *)init_cmd);
162 if (status != STATUS_SUCCESS) {
163 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
164 return false;
165 }
166
167 status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
168 sizeof(struct vnt_rsp_card_init),
169 (u8 *)init_rsp);
170 if (status != STATUS_SUCCESS) {
171 dev_dbg(&priv->usb->dev,
172 "Cardinit request in status fail!\n");
173 return false;
174 }
175
176 /* local ID for AES functions */
177 status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
178 MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
179 if (status != STATUS_SUCCESS)
180 return false;
181
182 /* do MACbSoftwareReset in MACvInitialize */
183
184 priv->top_ofdm_basic_rate = RATE_24M;
185 priv->top_cck_basic_rate = RATE_1M;
186
187 /* target to IF pin while programming to RF chip */
188 priv->power = 0xFF;
189
190 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
191 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
192 /* load power table */
193 for (ii = 0; ii < 14; ii++) {
194 priv->cck_pwr_tbl[ii] =
195 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
196 if (priv->cck_pwr_tbl[ii] == 0)
197 priv->cck_pwr_tbl[ii] = priv->cck_pwr;
198
199 priv->ofdm_pwr_tbl[ii] =
200 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
201 if (priv->ofdm_pwr_tbl[ii] == 0)
202 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
203 }
204
205 /*
206 * original zonetype is USA, but custom zonetype is Europe,
207 * then need to recover 12, 13, 14 channels with 11 channel
208 */
209 for (ii = 11; ii < 14; ii++) {
210 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
211 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
212 }
213
214 priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
215
216 /* load OFDM A power table */
217 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
218 priv->ofdm_a_pwr_tbl[ii] =
219 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
220
221 if (priv->ofdm_a_pwr_tbl[ii] == 0)
222 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
223 }
224
225 antenna = priv->eeprom[EEP_OFS_ANTENNA];
226
227 if (antenna & EEP_ANTINV)
228 priv->tx_rx_ant_inv = true;
229 else
230 priv->tx_rx_ant_inv = false;
231
232 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
233
234 if (antenna == 0) /* if not set default is both */
235 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
236
237 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
238 priv->tx_antenna_mode = ANT_B;
239 priv->rx_antenna_sel = 1;
240
241 if (priv->tx_rx_ant_inv)
242 priv->rx_antenna_mode = ANT_A;
243 else
244 priv->rx_antenna_mode = ANT_B;
245 } else {
246 priv->rx_antenna_sel = 0;
247
248 if (antenna & EEP_ANTENNA_AUX) {
249 priv->tx_antenna_mode = ANT_A;
250
251 if (priv->tx_rx_ant_inv)
252 priv->rx_antenna_mode = ANT_B;
253 else
254 priv->rx_antenna_mode = ANT_A;
255 } else {
256 priv->tx_antenna_mode = ANT_B;
257
258 if (priv->tx_rx_ant_inv)
259 priv->rx_antenna_mode = ANT_A;
260 else
261 priv->rx_antenna_mode = ANT_B;
262 }
263 }
264
265 /* Set initial antenna mode */
266 vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
267
268 /* get Auto Fall Back type */
269 priv->auto_fb_ctrl = AUTO_FB_0;
270
271 /* default Auto Mode */
272 priv->bb_type = BB_TYPE_11G;
273
274 /* get RFType */
275 priv->rf_type = init_rsp->rf_type;
276
277 /* load vt3266 calibration parameters in EEPROM */
278 if (priv->rf_type == RF_VT3226D0) {
279 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
280 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
281 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
282 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
283 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
284 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
285 /* CR255, enable TX/RX IQ and
286 * DC compensation mode
287 */
288 vnt_control_out_u8(priv,
289 MESSAGE_REQUEST_BBREG,
290 0xff,
291 0x03);
292 /* CR251, TX I/Q Imbalance Calibration */
293 vnt_control_out_u8(priv,
294 MESSAGE_REQUEST_BBREG,
295 0xfb,
296 calib_tx_iq);
297 /* CR252, TX DC-Offset Calibration */
298 vnt_control_out_u8(priv,
299 MESSAGE_REQUEST_BBREG,
300 0xfC,
301 calib_tx_dc);
302 /* CR253, RX I/Q Imbalance Calibration */
303 vnt_control_out_u8(priv,
304 MESSAGE_REQUEST_BBREG,
305 0xfd,
306 calib_rx_iq);
307 } else {
308 /* CR255, turn off
309 * BB Calibration compensation
310 */
311 vnt_control_out_u8(priv,
312 MESSAGE_REQUEST_BBREG,
313 0xff,
314 0x0);
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 vnt_set_short_slot_time(priv);
337
338 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
339
340 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
341 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
342 MAC_REG_GPIOCTL1,
343 MESSAGE_REQUEST_MACREG, 1, &tmp);
344
345 if (status != STATUS_SUCCESS)
346 return false;
347
348 if ((tmp & GPIO3_DATA) == 0)
349 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
350 GPIO3_INTMD);
351 else
352 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
353 GPIO3_INTMD);
354 }
355
356 vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
357
358 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
359
360 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
361
362 vnt_radio_power_on(priv);
363
364 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
365
366 return true;
367 }
368
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
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
410 static void vnt_free_int_bufs(struct vnt_private *priv)
411 {
412 kfree(priv->int_buf.data_buf);
413 }
414
415 static bool vnt_alloc_bufs(struct vnt_private *priv)
416 {
417 struct vnt_usb_send_context *tx_context;
418 struct vnt_rcb *rcb;
419 int ii;
420
421 for (ii = 0; ii < priv->num_tx_context; ii++) {
422 tx_context = kmalloc(sizeof(struct vnt_usb_send_context),
423 GFP_KERNEL);
424 if (!tx_context)
425 goto free_tx;
426
427 priv->tx_context[ii] = tx_context;
428 tx_context->priv = priv;
429 tx_context->pkt_no = ii;
430
431 /* allocate URBs */
432 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
433 if (!tx_context->urb)
434 goto free_tx;
435
436 tx_context->in_use = false;
437 }
438
439 for (ii = 0; ii < priv->num_rcb; ii++) {
440 priv->rcb[ii] = kzalloc(sizeof(struct vnt_rcb), GFP_KERNEL);
441 if (!priv->rcb[ii]) {
442 dev_err(&priv->usb->dev,
443 "failed to allocate rcb no %d\n", ii);
444 goto free_rx_tx;
445 }
446
447 rcb = priv->rcb[ii];
448
449 rcb->priv = priv;
450
451 /* allocate URBs */
452 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
453 if (!rcb->urb)
454 goto free_rx_tx;
455
456 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
457 if (!rcb->skb)
458 goto free_rx_tx;
459
460 rcb->in_use = false;
461
462 /* submit rx urb */
463 if (vnt_submit_rx_urb(priv, rcb))
464 goto free_rx_tx;
465 }
466
467 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
468 if (!priv->interrupt_urb)
469 goto free_rx_tx;
470
471 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
472 if (!priv->int_buf.data_buf) {
473 usb_free_urb(priv->interrupt_urb);
474 goto free_rx_tx;
475 }
476
477 return true;
478
479 free_rx_tx:
480 vnt_free_rx_bufs(priv);
481
482 free_tx:
483 vnt_free_tx_bufs(priv);
484
485 return false;
486 }
487
488 static void vnt_tx_80211(struct ieee80211_hw *hw,
489 struct ieee80211_tx_control *control,
490 struct sk_buff *skb)
491 {
492 struct vnt_private *priv = hw->priv;
493
494 if (vnt_tx_packet(priv, skb))
495 ieee80211_free_txskb(hw, skb);
496 }
497
498 static int vnt_start(struct ieee80211_hw *hw)
499 {
500 struct vnt_private *priv = hw->priv;
501
502 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
503
504 if (!vnt_alloc_bufs(priv)) {
505 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
506 return -ENOMEM;
507 }
508
509 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
510
511 if (vnt_init_registers(priv) == false) {
512 dev_dbg(&priv->usb->dev, " init register fail\n");
513 goto free_all;
514 }
515
516 priv->int_interval = 1; /* bInterval is set to 1 */
517
518 vnt_int_start_interrupt(priv);
519
520 ieee80211_wake_queues(hw);
521
522 return 0;
523
524 free_all:
525 vnt_free_rx_bufs(priv);
526 vnt_free_tx_bufs(priv);
527 vnt_free_int_bufs(priv);
528
529 usb_kill_urb(priv->interrupt_urb);
530 usb_free_urb(priv->interrupt_urb);
531
532 return -ENOMEM;
533 }
534
535 static void vnt_stop(struct ieee80211_hw *hw)
536 {
537 struct vnt_private *priv = hw->priv;
538 int i;
539
540 if (!priv)
541 return;
542
543 for (i = 0; i < MAX_KEY_TABLE; i++)
544 vnt_mac_disable_keyentry(priv, i);
545
546 /* clear all keys */
547 priv->key_entry_inuse = 0;
548
549 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
550 vnt_mac_shutdown(priv);
551
552 ieee80211_stop_queues(hw);
553
554 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
555
556 cancel_delayed_work_sync(&priv->run_command_work);
557
558 priv->cmd_running = false;
559
560 vnt_free_tx_bufs(priv);
561 vnt_free_rx_bufs(priv);
562 vnt_free_int_bufs(priv);
563
564 usb_kill_urb(priv->interrupt_urb);
565 usb_free_urb(priv->interrupt_urb);
566 }
567
568 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
569 {
570 struct vnt_private *priv = hw->priv;
571
572 priv->vif = vif;
573
574 switch (vif->type) {
575 case NL80211_IFTYPE_STATION:
576 break;
577 case NL80211_IFTYPE_ADHOC:
578 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
579
580 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
581
582 break;
583 case NL80211_IFTYPE_AP:
584 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
585
586 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
587
588 break;
589 default:
590 return -EOPNOTSUPP;
591 }
592
593 priv->op_mode = vif->type;
594
595 vnt_set_bss_mode(priv);
596
597 /* LED blink on TX */
598 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
599
600 return 0;
601 }
602
603 static void vnt_remove_interface(struct ieee80211_hw *hw,
604 struct ieee80211_vif *vif)
605 {
606 struct vnt_private *priv = hw->priv;
607
608 switch (vif->type) {
609 case NL80211_IFTYPE_STATION:
610 break;
611 case NL80211_IFTYPE_ADHOC:
612 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
613 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
614 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
615 break;
616 case NL80211_IFTYPE_AP:
617 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
618 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
619 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
620 break;
621 default:
622 break;
623 }
624
625 vnt_radio_power_off(priv);
626
627 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
628
629 /* LED slow blink */
630 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
631 }
632
633 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
634 {
635 struct vnt_private *priv = hw->priv;
636 struct ieee80211_conf *conf = &hw->conf;
637 u8 bb_type;
638
639 if (changed & IEEE80211_CONF_CHANGE_PS) {
640 if (conf->flags & IEEE80211_CONF_PS)
641 vnt_enable_power_saving(priv, conf->listen_interval);
642 else
643 vnt_disable_power_saving(priv);
644 }
645
646 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
647 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
648 vnt_set_channel(priv, conf->chandef.chan->hw_value);
649
650 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
651 bb_type = BB_TYPE_11A;
652 else
653 bb_type = BB_TYPE_11G;
654
655 if (priv->bb_type != bb_type) {
656 priv->bb_type = bb_type;
657
658 vnt_set_bss_mode(priv);
659 }
660 }
661
662 if (changed & IEEE80211_CONF_CHANGE_POWER) {
663 if (priv->bb_type == BB_TYPE_11B)
664 priv->current_rate = RATE_1M;
665 else
666 priv->current_rate = RATE_54M;
667
668 vnt_rf_setpower(priv, priv->current_rate,
669 conf->chandef.chan->hw_value);
670 }
671
672 return 0;
673 }
674
675 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
676 struct ieee80211_vif *vif,
677 struct ieee80211_bss_conf *conf, u32 changed)
678 {
679 struct vnt_private *priv = hw->priv;
680
681 priv->current_aid = conf->aid;
682
683 if (changed & BSS_CHANGED_BSSID && conf->bssid)
684 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
685
686 if (changed & BSS_CHANGED_BASIC_RATES) {
687 priv->basic_rates = conf->basic_rates;
688
689 vnt_update_top_rates(priv);
690
691 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
692 }
693
694 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
695 if (conf->use_short_preamble) {
696 vnt_mac_enable_barker_preamble_mode(priv);
697 priv->preamble_type = true;
698 } else {
699 vnt_mac_disable_barker_preamble_mode(priv);
700 priv->preamble_type = false;
701 }
702 }
703
704 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
705 if (conf->use_cts_prot)
706 vnt_mac_enable_protect_mode(priv);
707 else
708 vnt_mac_disable_protect_mode(priv);
709 }
710
711 if (changed & BSS_CHANGED_ERP_SLOT) {
712 if (conf->use_short_slot)
713 priv->short_slot_time = true;
714 else
715 priv->short_slot_time = false;
716
717 vnt_set_short_slot_time(priv);
718 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
719 vnt_update_pre_ed_threshold(priv, false);
720 }
721
722 if (changed & BSS_CHANGED_TXPOWER)
723 vnt_rf_setpower(priv, priv->current_rate,
724 conf->chandef.chan->hw_value);
725
726 if (changed & BSS_CHANGED_BEACON_ENABLED) {
727 dev_dbg(&priv->usb->dev,
728 "Beacon enable %d\n", conf->enable_beacon);
729
730 if (conf->enable_beacon) {
731 vnt_beacon_enable(priv, vif, conf);
732
733 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
734 } else {
735 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
736 }
737 }
738
739 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
740 priv->op_mode != NL80211_IFTYPE_AP) {
741 if (conf->assoc && conf->beacon_rate) {
742 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
743 TFTCTL_TSFCNTREN);
744
745 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
746 conf->sync_tsf, priv->current_tsf);
747
748 vnt_mac_set_beacon_interval(priv, conf->beacon_int);
749
750 vnt_reset_next_tbtt(priv, conf->beacon_int);
751 } else {
752 vnt_clear_current_tsf(priv);
753
754 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
755 TFTCTL_TSFCNTREN);
756 }
757 }
758 }
759
760 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
761 struct netdev_hw_addr_list *mc_list)
762 {
763 struct vnt_private *priv = hw->priv;
764 struct netdev_hw_addr *ha;
765 u64 mc_filter = 0;
766 u32 bit_nr = 0;
767
768 netdev_hw_addr_list_for_each(ha, mc_list) {
769 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
770
771 mc_filter |= 1ULL << (bit_nr & 0x3f);
772 }
773
774 priv->mc_list_count = mc_list->count;
775
776 return mc_filter;
777 }
778
779 static void vnt_configure(struct ieee80211_hw *hw,
780 unsigned int changed_flags,
781 unsigned int *total_flags, u64 multicast)
782 {
783 struct vnt_private *priv = hw->priv;
784 u8 rx_mode = 0;
785 int rc;
786
787 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
788
789 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
790 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
791
792 if (!rc)
793 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
794
795 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
796
797 if (changed_flags & FIF_ALLMULTI) {
798 if (*total_flags & FIF_ALLMULTI) {
799 if (priv->mc_list_count > 2)
800 vnt_mac_set_filter(priv, ~0);
801 else
802 vnt_mac_set_filter(priv, multicast);
803
804 rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
805 } else {
806 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
807 }
808 }
809
810 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
811 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
812 rx_mode &= ~RCR_BSSID;
813 else
814 rx_mode |= RCR_BSSID;
815 }
816
817 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
818
819 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
820 }
821
822 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
823 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
824 struct ieee80211_key_conf *key)
825 {
826 struct vnt_private *priv = hw->priv;
827
828 switch (cmd) {
829 case SET_KEY:
830 if (vnt_set_keys(hw, sta, vif, key))
831 return -EOPNOTSUPP;
832 break;
833 case DISABLE_KEY:
834 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
835 clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
836 default:
837 break;
838 }
839
840 return 0;
841 }
842
843 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
844 struct ieee80211_vif *vif,
845 const u8 *addr)
846 {
847 struct vnt_private *priv = hw->priv;
848
849 vnt_set_bss_mode(priv);
850 /* Set max sensitivity*/
851 vnt_update_pre_ed_threshold(priv, true);
852 }
853
854 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
855 struct ieee80211_vif *vif)
856 {
857 struct vnt_private *priv = hw->priv;
858
859 /* Return sensitivity to channel level*/
860 vnt_update_pre_ed_threshold(priv, false);
861 }
862
863 static int vnt_get_stats(struct ieee80211_hw *hw,
864 struct ieee80211_low_level_stats *stats)
865 {
866 struct vnt_private *priv = hw->priv;
867
868 memcpy(stats, &priv->low_stats, sizeof(*stats));
869
870 return 0;
871 }
872
873 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
874 {
875 struct vnt_private *priv = hw->priv;
876
877 return priv->current_tsf;
878 }
879
880 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
881 u64 tsf)
882 {
883 struct vnt_private *priv = hw->priv;
884
885 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
886 }
887
888 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
889 {
890 struct vnt_private *priv = hw->priv;
891
892 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
893
894 vnt_clear_current_tsf(priv);
895 }
896
897 static const struct ieee80211_ops vnt_mac_ops = {
898 .tx = vnt_tx_80211,
899 .start = vnt_start,
900 .stop = vnt_stop,
901 .add_interface = vnt_add_interface,
902 .remove_interface = vnt_remove_interface,
903 .config = vnt_config,
904 .bss_info_changed = vnt_bss_info_changed,
905 .prepare_multicast = vnt_prepare_multicast,
906 .configure_filter = vnt_configure,
907 .set_key = vnt_set_key,
908 .sw_scan_start = vnt_sw_scan_start,
909 .sw_scan_complete = vnt_sw_scan_complete,
910 .get_stats = vnt_get_stats,
911 .get_tsf = vnt_get_tsf,
912 .set_tsf = vnt_set_tsf,
913 .reset_tsf = vnt_reset_tsf,
914 };
915
916 int vnt_init(struct vnt_private *priv)
917 {
918 if (!(vnt_init_registers(priv)))
919 return -EAGAIN;
920
921 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
922
923 vnt_init_bands(priv);
924
925 if (ieee80211_register_hw(priv->hw))
926 return -ENODEV;
927
928 priv->mac_hw = true;
929
930 vnt_radio_power_off(priv);
931
932 return 0;
933 }
934
935 static int
936 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
937 {
938 struct usb_device *udev;
939 struct vnt_private *priv;
940 struct ieee80211_hw *hw;
941 struct wiphy *wiphy;
942 int rc = 0;
943
944 udev = usb_get_dev(interface_to_usbdev(intf));
945
946 dev_notice(&udev->dev, "%s Ver. %s\n",
947 DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
948 dev_notice(&udev->dev,
949 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
950
951 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
952 if (!hw) {
953 dev_err(&udev->dev, "could not register ieee80211_hw\n");
954 rc = -ENOMEM;
955 goto err_nomem;
956 }
957
958 priv = hw->priv;
959 priv->hw = hw;
960 priv->usb = udev;
961
962 vnt_set_options(priv);
963
964 spin_lock_init(&priv->lock);
965 mutex_init(&priv->usb_lock);
966
967 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
968
969 usb_set_intfdata(intf, priv);
970
971 wiphy = priv->hw->wiphy;
972
973 wiphy->frag_threshold = FRAG_THRESH_DEF;
974 wiphy->rts_threshold = RTS_THRESH_DEF;
975 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
976 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
977
978 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
979 ieee80211_hw_set(priv->hw, SIGNAL_DBM);
980 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
981 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
982 ieee80211_hw_set(priv->hw, SUPPORTS_PS);
983
984 priv->hw->max_signal = 100;
985
986 SET_IEEE80211_DEV(priv->hw, &intf->dev);
987
988 rc = usb_reset_device(priv->usb);
989 if (rc)
990 dev_warn(&priv->usb->dev,
991 "%s reset fail status=%d\n", __func__, rc);
992
993 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
994 vnt_reset_command_timer(priv);
995
996 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
997
998 return 0;
999
1000 err_nomem:
1001 usb_put_dev(udev);
1002
1003 return rc;
1004 }
1005
1006 static void vt6656_disconnect(struct usb_interface *intf)
1007 {
1008 struct vnt_private *priv = usb_get_intfdata(intf);
1009
1010 if (!priv)
1011 return;
1012
1013 if (priv->mac_hw)
1014 ieee80211_unregister_hw(priv->hw);
1015
1016 usb_set_intfdata(intf, NULL);
1017 usb_put_dev(interface_to_usbdev(intf));
1018
1019 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1020
1021 ieee80211_free_hw(priv->hw);
1022 }
1023
1024 #ifdef CONFIG_PM
1025
1026 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1027 {
1028 return 0;
1029 }
1030
1031 static int vt6656_resume(struct usb_interface *intf)
1032 {
1033 return 0;
1034 }
1035
1036 #endif /* CONFIG_PM */
1037
1038 MODULE_DEVICE_TABLE(usb, vt6656_table);
1039
1040 static struct usb_driver vt6656_driver = {
1041 .name = DEVICE_NAME,
1042 .probe = vt6656_probe,
1043 .disconnect = vt6656_disconnect,
1044 .id_table = vt6656_table,
1045 #ifdef CONFIG_PM
1046 .suspend = vt6656_suspend,
1047 .resume = vt6656_resume,
1048 #endif /* CONFIG_PM */
1049 };
1050
1051 module_usb_driver(vt6656_driver);
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