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/etherdevice.h>
  25 #include <linux/file.h>
  26 #include "device.h"
  27 #include "card.h"
  28 #include "baseband.h"
  29 #include "mac.h"
  30 #include "power.h"
  31 #include "wcmd.h"
  32 #include "rxtx.h"
  33 #include "dpc.h"
  34 #include "rf.h"
  35 #include "firmware.h"
  36 #include "usbpipe.h"
  37 #include "channel.h"
  38 #include "int.h"
  39
  40 /*
  41  * 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->auto_fb_ctrl = AUTO_FB_0;
 103         priv->preamble_type = 0;
 104         priv->exist_sw_net_addr = false;
 105 }
 106
 107 /*
 108  * initialization of MAC & BBP registers
 109  */
 110 static int vnt_init_registers(struct vnt_private *priv)
 111 {
 112         struct vnt_cmd_card_init *init_cmd = &priv->init_command;
 113         struct vnt_rsp_card_init *init_rsp = &priv->init_response;
 114         u8 antenna;
 115         int ii;
 116         int status = STATUS_SUCCESS;
 117         u8 tmp;
 118         u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
 119
 120         dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
 121                 DEVICE_INIT_COLD, priv->packet_type);
 122
 123         if (!vnt_check_firmware_version(priv)) {
 124                 if (vnt_download_firmware(priv) == true) {
 125                         if (vnt_firmware_branch_to_sram(priv) == false) {
 126                                 dev_dbg(&priv->usb->dev,
 127                                         " vnt_firmware_branch_to_sram fail\n");
 128                                 return false;
 129                         }
 130                 } else {
 131                         dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
 132                         return false;
 133                 }
 134         }
 135
 136         if (!vnt_vt3184_init(priv)) {
 137                 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
 138                 return false;
 139         }
 140
 141         init_cmd->init_class = DEVICE_INIT_COLD;
 142         init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
 143         for (ii = 0; ii < 6; ii++)
 144                 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
 145         init_cmd->short_retry_limit = priv->short_retry_limit;
 146         init_cmd->long_retry_limit = priv->long_retry_limit;
 147
 148         /* issue card_init command to device */
 149         status = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
 150                                  sizeof(struct vnt_cmd_card_init),
 151                                  (u8 *)init_cmd);
 152         if (status != STATUS_SUCCESS) {
 153                 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
 154                 return false;
 155         }
 156
 157         status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
 158                                 sizeof(struct vnt_rsp_card_init),
 159                                 (u8 *)init_rsp);
 160         if (status != STATUS_SUCCESS) {
 161                 dev_dbg(&priv->usb->dev,
 162                         "Cardinit request in status fail!\n");
 163                 return false;
 164         }
 165
 166         /* local ID for AES functions */
 167         status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
 168                                 MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
 169         if (status != STATUS_SUCCESS)
 170                 return false;
 171
 172         /* do MACbSoftwareReset in MACvInitialize */
 173
 174         priv->top_ofdm_basic_rate = RATE_24M;
 175         priv->top_cck_basic_rate = RATE_1M;
 176
 177         /* target to IF pin while programming to RF chip */
 178         priv->power = 0xFF;
 179
 180         priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
 181         priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
 182         /* load power table */
 183         for (ii = 0; ii < 14; ii++) {
 184                 priv->cck_pwr_tbl[ii] =
 185                         priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
 186                 if (priv->cck_pwr_tbl[ii] == 0)
 187                         priv->cck_pwr_tbl[ii] = priv->cck_pwr;
 188
 189                 priv->ofdm_pwr_tbl[ii] =
 190                                 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
 191                 if (priv->ofdm_pwr_tbl[ii] == 0)
 192                         priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
 193         }
 194
 195         /*
 196          * original zonetype is USA, but custom zonetype is Europe,
 197          * then need to recover 12, 13, 14 channels with 11 channel
 198          */
 199         for (ii = 11; ii < 14; ii++) {
 200                 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
 201                 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
 202         }
 203
 204         priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
 205
 206         /* load OFDM A power table */
 207         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 208                 priv->ofdm_a_pwr_tbl[ii] =
 209                         priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
 210
 211                 if (priv->ofdm_a_pwr_tbl[ii] == 0)
 212                         priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
 213         }
 214
 215         antenna = priv->eeprom[EEP_OFS_ANTENNA];
 216
 217         if (antenna & EEP_ANTINV)
 218                 priv->tx_rx_ant_inv = true;
 219         else
 220                 priv->tx_rx_ant_inv = false;
 221
 222         antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 223
 224         if (antenna == 0) /* if not set default is both */
 225                 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 226
 227         if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 228                 priv->tx_antenna_mode = ANT_B;
 229                 priv->rx_antenna_sel = 1;
 230
 231                 if (priv->tx_rx_ant_inv)
 232                         priv->rx_antenna_mode = ANT_A;
 233                 else
 234                         priv->rx_antenna_mode = ANT_B;
 235         } else  {
 236                 priv->rx_antenna_sel = 0;
 237
 238                 if (antenna & EEP_ANTENNA_AUX) {
 239                         priv->tx_antenna_mode = ANT_A;
 240
 241                         if (priv->tx_rx_ant_inv)
 242                                 priv->rx_antenna_mode = ANT_B;
 243                         else
 244                                 priv->rx_antenna_mode = ANT_A;
 245                 } else {
 246                         priv->tx_antenna_mode = ANT_B;
 247
 248                 if (priv->tx_rx_ant_inv)
 249                         priv->rx_antenna_mode = ANT_A;
 250                 else
 251                         priv->rx_antenna_mode = ANT_B;
 252                 }
 253         }
 254
 255         /* Set initial antenna mode */
 256         vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
 257
 258         /* get Auto Fall Back type */
 259         priv->auto_fb_ctrl = AUTO_FB_0;
 260
 261         /* default Auto Mode */
 262         priv->bb_type = BB_TYPE_11G;
 263
 264         /* get RFType */
 265         priv->rf_type = init_rsp->rf_type;
 266
 267         /* load vt3266 calibration parameters in EEPROM */
 268         if (priv->rf_type == RF_VT3226D0) {
 269                 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
 270                     (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
 271                         calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
 272                         calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
 273                         calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
 274                         if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
 275                                 /* CR255, enable TX/RX IQ and
 276                                  * DC compensation mode
 277                                  */
 278                                 vnt_control_out_u8(priv,
 279                                                    MESSAGE_REQUEST_BBREG,
 280                                                    0xff,
 281                                                    0x03);
 282                                 /* CR251, TX I/Q Imbalance Calibration */
 283                                 vnt_control_out_u8(priv,
 284                                                    MESSAGE_REQUEST_BBREG,
 285                                                    0xfb,
 286                                                    calib_tx_iq);
 287                                 /* CR252, TX DC-Offset Calibration */
 288                                 vnt_control_out_u8(priv,
 289                                                    MESSAGE_REQUEST_BBREG,
 290                                                    0xfC,
 291                                                    calib_tx_dc);
 292                                 /* CR253, RX I/Q Imbalance Calibration */
 293                                 vnt_control_out_u8(priv,
 294                                                    MESSAGE_REQUEST_BBREG,
 295                                                    0xfd,
 296                                                    calib_rx_iq);
 297                         } else {
 298                                 /* CR255, turn off
 299                                  * BB Calibration compensation
 300                                  */
 301                                 vnt_control_out_u8(priv,
 302                                                    MESSAGE_REQUEST_BBREG,
 303                                                    0xff,
 304                                                    0x0);
 305                         }
 306                 }
 307         }
 308
 309         /* get permanent network address */
 310         memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
 311         ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
 312
 313         /* if exist SW network address, use it */
 314         dev_dbg(&priv->usb->dev, "Network address = %pM\n",
 315                 priv->current_net_addr);
 316
 317         /*
 318          * set BB and packet type at the same time
 319          * set Short Slot Time, xIFS, and RSPINF
 320          */
 321         if (priv->bb_type == BB_TYPE_11A)
 322                 priv->short_slot_time = true;
 323         else
 324                 priv->short_slot_time = false;
 325
 326         vnt_set_short_slot_time(priv);
 327
 328         priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
 329
 330         if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
 331                 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
 332                                         MAC_REG_GPIOCTL1,
 333                                         MESSAGE_REQUEST_MACREG, 1, &tmp);
 334
 335                 if (status != STATUS_SUCCESS)
 336                         return false;
 337
 338                 if ((tmp & GPIO3_DATA) == 0)
 339                         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
 340                                             GPIO3_INTMD);
 341                 else
 342                         vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
 343                                              GPIO3_INTMD);
 344         }
 345
 346         vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
 347
 348         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 349
 350         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
 351
 352         vnt_radio_power_on(priv);
 353
 354         dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
 355
 356         return true;
 357 }
 358
 359 static void vnt_free_tx_bufs(struct vnt_private *priv)
 360 {
 361         struct vnt_usb_send_context *tx_context;
 362         int ii;
 363
 364         for (ii = 0; ii < priv->num_tx_context; ii++) {
 365                 tx_context = priv->tx_context[ii];
 366                 /* deallocate URBs */
 367                 if (tx_context->urb) {
 368                         usb_kill_urb(tx_context->urb);
 369                         usb_free_urb(tx_context->urb);
 370                 }
 371
 372                 kfree(tx_context);
 373         }
 374 }
 375
 376 static void vnt_free_rx_bufs(struct vnt_private *priv)
 377 {
 378         struct vnt_rcb *rcb;
 379         int ii;
 380
 381         for (ii = 0; ii < priv->num_rcb; ii++) {
 382                 rcb = priv->rcb[ii];
 383                 if (!rcb)
 384                         continue;
 385
 386                 /* deallocate URBs */
 387                 if (rcb->urb) {
 388                         usb_kill_urb(rcb->urb);
 389                         usb_free_urb(rcb->urb);
 390                 }
 391
 392                 /* deallocate skb */
 393                 if (rcb->skb)
 394                         dev_kfree_skb(rcb->skb);
 395
 396                 kfree(rcb);
 397         }
 398 }
 399
 400 static void vnt_free_int_bufs(struct vnt_private *priv)
 401 {
 402         kfree(priv->int_buf.data_buf);
 403 }
 404
 405 static int vnt_alloc_bufs(struct vnt_private *priv)
 406 {
 407         int ret = 0;
 408         struct vnt_usb_send_context *tx_context;
 409         struct vnt_rcb *rcb;
 410         int ii;
 411
 412         for (ii = 0; ii < priv->num_tx_context; ii++) {
 413                 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
 414                 if (!tx_context) {
 415                         ret = -ENOMEM;
 416                         goto free_tx;
 417                 }
 418
 419                 priv->tx_context[ii] = tx_context;
 420                 tx_context->priv = priv;
 421                 tx_context->pkt_no = ii;
 422
 423                 /* allocate URBs */
 424                 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
 425                 if (!tx_context->urb) {
 426                         ret = -ENOMEM;
 427                         goto free_tx;
 428                 }
 429
 430                 tx_context->in_use = false;
 431         }
 432
 433         for (ii = 0; ii < priv->num_rcb; ii++) {
 434                 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
 435                 if (!priv->rcb[ii]) {
 436                         ret = -ENOMEM;
 437                         goto free_rx_tx;
 438                 }
 439
 440                 rcb = priv->rcb[ii];
 441
 442                 rcb->priv = priv;
 443
 444                 /* allocate URBs */
 445                 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
 446                 if (!rcb->urb) {
 447                         ret = -ENOMEM;
 448                         goto free_rx_tx;
 449                 }
 450
 451                 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
 452                 if (!rcb->skb) {
 453                         ret = -ENOMEM;
 454                         goto free_rx_tx;
 455                 }
 456
 457                 rcb->in_use = false;
 458
 459                 /* submit rx urb */
 460                 ret = vnt_submit_rx_urb(priv, rcb);
 461                 if (ret)
 462                         goto free_rx_tx;
 463         }
 464
 465         priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
 466         if (!priv->interrupt_urb) {
 467                 ret = -ENOMEM;
 468                 goto free_rx_tx;
 469         }
 470
 471         priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
 472         if (!priv->int_buf.data_buf) {
 473                 ret = -ENOMEM;
 474                 goto free_rx_tx_urb;
 475         }
 476
 477         return 0;
 478
 479 free_rx_tx_urb:
 480         usb_free_urb(priv->interrupt_urb);
 481 free_rx_tx:
 482         vnt_free_rx_bufs(priv);
 483 free_tx:
 484         vnt_free_tx_bufs(priv);
 485         return ret;
 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         if (vnt_key_init_table(priv))
 517                 goto free_all;
 518
 519         priv->int_interval = 1;  /* bInterval is set to 1 */
 520
 521         vnt_int_start_interrupt(priv);
 522
 523         ieee80211_wake_queues(hw);
 524
 525         return 0;
 526
 527 free_all:
 528         vnt_free_rx_bufs(priv);
 529         vnt_free_tx_bufs(priv);
 530         vnt_free_int_bufs(priv);
 531
 532         usb_kill_urb(priv->interrupt_urb);
 533         usb_free_urb(priv->interrupt_urb);
 534
 535         return -ENOMEM;
 536 }
 537
 538 static void vnt_stop(struct ieee80211_hw *hw)
 539 {
 540         struct vnt_private *priv = hw->priv;
 541         int i;
 542
 543         if (!priv)
 544                 return;
 545
 546         for (i = 0; i < MAX_KEY_TABLE; i++)
 547                 vnt_mac_disable_keyentry(priv, i);
 548
 549         /* clear all keys */
 550         priv->key_entry_inuse = 0;
 551
 552         if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 553                 vnt_mac_shutdown(priv);
 554
 555         ieee80211_stop_queues(hw);
 556
 557         set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 558
 559         cancel_delayed_work_sync(&priv->run_command_work);
 560
 561         priv->cmd_running = false;
 562
 563         vnt_free_tx_bufs(priv);
 564         vnt_free_rx_bufs(priv);
 565         vnt_free_int_bufs(priv);
 566
 567         usb_kill_urb(priv->interrupt_urb);
 568         usb_free_urb(priv->interrupt_urb);
 569 }
 570
 571 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 572 {
 573         struct vnt_private *priv = hw->priv;
 574
 575         priv->vif = vif;
 576
 577         switch (vif->type) {
 578         case NL80211_IFTYPE_STATION:
 579                 break;
 580         case NL80211_IFTYPE_ADHOC:
 581                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 582
 583                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 584
 585                 break;
 586         case NL80211_IFTYPE_AP:
 587                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 588
 589                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 590
 591                 break;
 592         default:
 593                 return -EOPNOTSUPP;
 594         }
 595
 596         priv->op_mode = vif->type;
 597
 598         /* LED blink on TX */
 599         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 600
 601         return 0;
 602 }
 603
 604 static void vnt_remove_interface(struct ieee80211_hw *hw,
 605                                  struct ieee80211_vif *vif)
 606 {
 607         struct vnt_private *priv = hw->priv;
 608
 609         switch (vif->type) {
 610         case NL80211_IFTYPE_STATION:
 611                 break;
 612         case NL80211_IFTYPE_ADHOC:
 613                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 614                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 615                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 616                 break;
 617         case NL80211_IFTYPE_AP:
 618                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 619                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 620                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 621                 break;
 622         default:
 623                 break;
 624         }
 625
 626         vnt_radio_power_off(priv);
 627
 628         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 629
 630         /* LED slow blink */
 631         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 632 }
 633
 634 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 635 {
 636         struct vnt_private *priv = hw->priv;
 637         struct ieee80211_conf *conf = &hw->conf;
 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                         priv->bb_type = BB_TYPE_11A;
 652                 else
 653                         priv->bb_type = BB_TYPE_11G;
 654         }
 655
 656         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 657                 if (priv->bb_type == BB_TYPE_11B)
 658                         priv->current_rate = RATE_1M;
 659                 else
 660                         priv->current_rate = RATE_54M;
 661
 662                 vnt_rf_setpower(priv, priv->current_rate,
 663                                 conf->chandef.chan->hw_value);
 664         }
 665
 666         return 0;
 667 }
 668
 669 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 670                                  struct ieee80211_vif *vif,
 671                                  struct ieee80211_bss_conf *conf, u32 changed)
 672 {
 673         struct vnt_private *priv = hw->priv;
 674
 675         priv->current_aid = conf->aid;
 676
 677         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 678                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 679
 680         if (changed & BSS_CHANGED_BASIC_RATES) {
 681                 priv->basic_rates = conf->basic_rates;
 682
 683                 vnt_update_top_rates(priv);
 684
 685                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 686         }
 687
 688         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 689                 if (conf->use_short_preamble) {
 690                         vnt_mac_enable_barker_preamble_mode(priv);
 691                         priv->preamble_type = true;
 692                 } else {
 693                         vnt_mac_disable_barker_preamble_mode(priv);
 694                         priv->preamble_type = false;
 695                 }
 696         }
 697
 698         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 699                 if (conf->use_cts_prot)
 700                         vnt_mac_enable_protect_mode(priv);
 701                 else
 702                         vnt_mac_disable_protect_mode(priv);
 703         }
 704
 705         if (changed & BSS_CHANGED_ERP_SLOT) {
 706                 if (conf->use_short_slot)
 707                         priv->short_slot_time = true;
 708                 else
 709                         priv->short_slot_time = false;
 710
 711                 vnt_set_short_slot_time(priv);
 712                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 713                 vnt_update_pre_ed_threshold(priv, false);
 714         }
 715
 716         if (changed & (BSS_CHANGED_BASIC_RATES | BSS_CHANGED_ERP_PREAMBLE |
 717                        BSS_CHANGED_ERP_SLOT))
 718                 vnt_set_bss_mode(priv);
 719
 720         if (changed & BSS_CHANGED_TXPOWER)
 721                 vnt_rf_setpower(priv, priv->current_rate,
 722                                 conf->chandef.chan->hw_value);
 723
 724         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 725                 dev_dbg(&priv->usb->dev,
 726                         "Beacon enable %d\n", conf->enable_beacon);
 727
 728                 if (conf->enable_beacon) {
 729                         vnt_beacon_enable(priv, vif, conf);
 730
 731                         vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 732                 } else {
 733                         vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 734                 }
 735         }
 736
 737         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
 738             priv->op_mode != NL80211_IFTYPE_AP) {
 739                 if (conf->assoc && conf->beacon_rate) {
 740                         vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
 741                                             TFTCTL_TSFCNTREN);
 742
 743                         vnt_mac_set_beacon_interval(priv, conf->beacon_int);
 744
 745                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 746
 747                         vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
 748                                        conf->sync_tsf, priv->current_tsf);
 749
 750                         vnt_update_next_tbtt(priv,
 751                                              conf->sync_tsf, conf->beacon_int);
 752                 } else {
 753                         vnt_clear_current_tsf(priv);
 754
 755                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 756                                              TFTCTL_TSFCNTREN);
 757                 }
 758         }
 759 }
 760
 761 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 762                                  struct netdev_hw_addr_list *mc_list)
 763 {
 764         struct vnt_private *priv = hw->priv;
 765         struct netdev_hw_addr *ha;
 766         u64 mc_filter = 0;
 767         u32 bit_nr = 0;
 768
 769         netdev_hw_addr_list_for_each(ha, mc_list) {
 770                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 771
 772                 mc_filter |= 1ULL << (bit_nr & 0x3f);
 773         }
 774
 775         priv->mc_list_count = mc_list->count;
 776
 777         return mc_filter;
 778 }
 779
 780 static void vnt_configure(struct ieee80211_hw *hw,
 781                           unsigned int changed_flags,
 782                           unsigned int *total_flags, u64 multicast)
 783 {
 784         struct vnt_private *priv = hw->priv;
 785         u8 rx_mode = 0;
 786
 787         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 788
 789         vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 790                        MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 791
 792         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 793
 794         if (changed_flags & FIF_ALLMULTI) {
 795                 if (*total_flags & FIF_ALLMULTI) {
 796                         if (priv->mc_list_count > 2)
 797                                 vnt_mac_set_filter(priv, ~0);
 798                         else
 799                                 vnt_mac_set_filter(priv, multicast);
 800
 801                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 802                 } else {
 803                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 804                 }
 805         }
 806
 807         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 808                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 809                         rx_mode &= ~RCR_BSSID;
 810                 else
 811                         rx_mode |= RCR_BSSID;
 812         }
 813
 814         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 815
 816         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 817 }
 818
 819 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 820                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 821                        struct ieee80211_key_conf *key)
 822 {
 823         struct vnt_private *priv = hw->priv;
 824
 825         switch (cmd) {
 826         case SET_KEY:
 827                 if (vnt_set_keys(hw, sta, vif, key))
 828                         return -EOPNOTSUPP;
 829                 break;
 830         case DISABLE_KEY:
 831                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse)) {
 832                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 833
 834                         vnt_mac_disable_keyentry(priv, key->hw_key_idx);
 835                 }
 836
 837         default:
 838                 break;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
 845                               struct ieee80211_vif *vif,
 846                               const u8 *addr)
 847 {
 848         struct vnt_private *priv = hw->priv;
 849
 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         priv->intf = intf;
 962
 963         vnt_set_options(priv);
 964
 965         spin_lock_init(&priv->lock);
 966         mutex_init(&priv->usb_lock);
 967
 968         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
 969
 970         usb_set_intfdata(intf, priv);
 971
 972         wiphy = priv->hw->wiphy;
 973
 974         wiphy->frag_threshold = FRAG_THRESH_DEF;
 975         wiphy->rts_threshold = RTS_THRESH_DEF;
 976         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 977                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
 978
 979         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
 980         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 981         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 982         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
 983         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 984         ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
 985
 986         priv->hw->max_signal = 100;
 987
 988         SET_IEEE80211_DEV(priv->hw, &intf->dev);
 989
 990         rc = usb_reset_device(priv->usb);
 991         if (rc)
 992                 dev_warn(&priv->usb->dev,
 993                          "%s reset fail status=%d\n", __func__, rc);
 994
 995         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 996         vnt_reset_command_timer(priv);
 997
 998         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
 999
1000         return 0;
1001
1002 err_nomem:
1003         usb_put_dev(udev);
1004
1005         return rc;
1006 }
1007
1008 static void vt6656_disconnect(struct usb_interface *intf)
1009 {
1010         struct vnt_private *priv = usb_get_intfdata(intf);
1011
1012         if (!priv)
1013                 return;
1014
1015         if (priv->mac_hw)
1016                 ieee80211_unregister_hw(priv->hw);
1017
1018         usb_set_intfdata(intf, NULL);
1019         usb_put_dev(interface_to_usbdev(intf));
1020
1021         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1022
1023         ieee80211_free_hw(priv->hw);
1024 }
1025
1026 #ifdef CONFIG_PM
1027
1028 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1029 {
1030         return 0;
1031 }
1032
1033 static int vt6656_resume(struct usb_interface *intf)
1034 {
1035         return 0;
1036 }
1037
1038 #endif /* CONFIG_PM */
1039
1040 MODULE_DEVICE_TABLE(usb, vt6656_table);
1041
1042 static struct usb_driver vt6656_driver = {
1043         .name =         DEVICE_NAME,
1044         .probe =        vt6656_probe,
1045         .disconnect =   vt6656_disconnect,
1046         .id_table =     vt6656_table,
1047 #ifdef CONFIG_PM
1048         .suspend = vt6656_suspend,
1049         .resume = vt6656_resume,
1050 #endif /* CONFIG_PM */
1051 };
1052
1053 module_usb_driver(vt6656_driver);