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         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         vnt_set_bss_mode(priv);
 599
 600         /* LED blink on TX */
 601         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 602
 603         return 0;
 604 }
 605
 606 static void vnt_remove_interface(struct ieee80211_hw *hw,
 607                                  struct ieee80211_vif *vif)
 608 {
 609         struct vnt_private *priv = hw->priv;
 610
 611         switch (vif->type) {
 612         case NL80211_IFTYPE_STATION:
 613                 break;
 614         case NL80211_IFTYPE_ADHOC:
 615                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 616                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 617                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 618                 break;
 619         case NL80211_IFTYPE_AP:
 620                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 621                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 622                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 623                 break;
 624         default:
 625                 break;
 626         }
 627
 628         vnt_radio_power_off(priv);
 629
 630         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 631
 632         /* LED slow blink */
 633         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 634 }
 635
 636 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 637 {
 638         struct vnt_private *priv = hw->priv;
 639         struct ieee80211_conf *conf = &hw->conf;
 640
 641         if (changed & IEEE80211_CONF_CHANGE_PS) {
 642                 if (conf->flags & IEEE80211_CONF_PS)
 643                         vnt_enable_power_saving(priv, conf->listen_interval);
 644                 else
 645                         vnt_disable_power_saving(priv);
 646         }
 647
 648         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
 649             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
 650                 vnt_set_channel(priv, conf->chandef.chan->hw_value);
 651
 652                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
 653                         priv->bb_type = BB_TYPE_11A;
 654                 else
 655                         priv->bb_type = BB_TYPE_11G;
 656         }
 657
 658         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 659                 if (priv->bb_type == BB_TYPE_11B)
 660                         priv->current_rate = RATE_1M;
 661                 else
 662                         priv->current_rate = RATE_54M;
 663
 664                 vnt_rf_setpower(priv, priv->current_rate,
 665                                 conf->chandef.chan->hw_value);
 666         }
 667
 668         return 0;
 669 }
 670
 671 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 672                                  struct ieee80211_vif *vif,
 673                                  struct ieee80211_bss_conf *conf, u32 changed)
 674 {
 675         struct vnt_private *priv = hw->priv;
 676
 677         priv->current_aid = conf->aid;
 678
 679         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 680                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 681
 682         if (changed & BSS_CHANGED_BASIC_RATES) {
 683                 priv->basic_rates = conf->basic_rates;
 684
 685                 vnt_update_top_rates(priv);
 686                 vnt_set_bss_mode(priv);
 687
 688                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 689         }
 690
 691         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 692                 if (conf->use_short_preamble) {
 693                         vnt_mac_enable_barker_preamble_mode(priv);
 694                         priv->preamble_type = true;
 695                 } else {
 696                         vnt_mac_disable_barker_preamble_mode(priv);
 697                         priv->preamble_type = false;
 698                 }
 699         }
 700
 701         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 702                 if (conf->use_cts_prot)
 703                         vnt_mac_enable_protect_mode(priv);
 704                 else
 705                         vnt_mac_disable_protect_mode(priv);
 706         }
 707
 708         if (changed & BSS_CHANGED_ERP_SLOT) {
 709                 if (conf->use_short_slot)
 710                         priv->short_slot_time = true;
 711                 else
 712                         priv->short_slot_time = false;
 713
 714                 vnt_set_short_slot_time(priv);
 715                 vnt_update_ifs(priv);
 716                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 717                 vnt_update_pre_ed_threshold(priv, false);
 718         }
 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_adjust_tsf(priv, conf->beacon_rate->hw_value,
 744                                        conf->sync_tsf, priv->current_tsf);
 745
 746                         vnt_mac_set_beacon_interval(priv, conf->beacon_int);
 747
 748                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 749                 } else {
 750                         vnt_clear_current_tsf(priv);
 751
 752                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 753                                              TFTCTL_TSFCNTREN);
 754                 }
 755         }
 756 }
 757
 758 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 759                                  struct netdev_hw_addr_list *mc_list)
 760 {
 761         struct vnt_private *priv = hw->priv;
 762         struct netdev_hw_addr *ha;
 763         u64 mc_filter = 0;
 764         u32 bit_nr = 0;
 765
 766         netdev_hw_addr_list_for_each(ha, mc_list) {
 767                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 768
 769                 mc_filter |= 1ULL << (bit_nr & 0x3f);
 770         }
 771
 772         priv->mc_list_count = mc_list->count;
 773
 774         return mc_filter;
 775 }
 776
 777 static void vnt_configure(struct ieee80211_hw *hw,
 778                           unsigned int changed_flags,
 779                           unsigned int *total_flags, u64 multicast)
 780 {
 781         struct vnt_private *priv = hw->priv;
 782         u8 rx_mode = 0;
 783         int rc;
 784
 785         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 786
 787         rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 788                             MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 789
 790         if (!rc)
 791                 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
 792
 793         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 794
 795         if (changed_flags & FIF_ALLMULTI) {
 796                 if (*total_flags & FIF_ALLMULTI) {
 797                         if (priv->mc_list_count > 2)
 798                                 vnt_mac_set_filter(priv, ~0);
 799                         else
 800                                 vnt_mac_set_filter(priv, multicast);
 801
 802                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 803                 } else {
 804                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 805                 }
 806         }
 807
 808         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 809                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 810                         rx_mode &= ~RCR_BSSID;
 811                 else
 812                         rx_mode |= RCR_BSSID;
 813         }
 814
 815         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 816
 817         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 818 }
 819
 820 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 821                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 822                        struct ieee80211_key_conf *key)
 823 {
 824         struct vnt_private *priv = hw->priv;
 825
 826         switch (cmd) {
 827         case SET_KEY:
 828                 if (vnt_set_keys(hw, sta, vif, key))
 829                         return -EOPNOTSUPP;
 830                 break;
 831         case DISABLE_KEY:
 832                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
 833                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 834         default:
 835                 break;
 836         }
 837
 838         return 0;
 839 }
 840
 841 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
 842                               struct ieee80211_vif *vif,
 843                               const u8 *addr)
 844 {
 845         struct vnt_private *priv = hw->priv;
 846
 847         /* Set max sensitivity*/
 848         vnt_update_pre_ed_threshold(priv, true);
 849 }
 850
 851 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
 852                                  struct ieee80211_vif *vif)
 853 {
 854         struct vnt_private *priv = hw->priv;
 855
 856         /* Return sensitivity to channel level*/
 857         vnt_update_pre_ed_threshold(priv, false);
 858 }
 859
 860 static int vnt_get_stats(struct ieee80211_hw *hw,
 861                          struct ieee80211_low_level_stats *stats)
 862 {
 863         struct vnt_private *priv = hw->priv;
 864
 865         memcpy(stats, &priv->low_stats, sizeof(*stats));
 866
 867         return 0;
 868 }
 869
 870 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 871 {
 872         struct vnt_private *priv = hw->priv;
 873
 874         return priv->current_tsf;
 875 }
 876
 877 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 878                         u64 tsf)
 879 {
 880         struct vnt_private *priv = hw->priv;
 881
 882         vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
 883 }
 884
 885 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 886 {
 887         struct vnt_private *priv = hw->priv;
 888
 889         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 890
 891         vnt_clear_current_tsf(priv);
 892 }
 893
 894 static const struct ieee80211_ops vnt_mac_ops = {
 895         .tx                     = vnt_tx_80211,
 896         .start                  = vnt_start,
 897         .stop                   = vnt_stop,
 898         .add_interface          = vnt_add_interface,
 899         .remove_interface       = vnt_remove_interface,
 900         .config                 = vnt_config,
 901         .bss_info_changed       = vnt_bss_info_changed,
 902         .prepare_multicast      = vnt_prepare_multicast,
 903         .configure_filter       = vnt_configure,
 904         .set_key                = vnt_set_key,
 905         .sw_scan_start          = vnt_sw_scan_start,
 906         .sw_scan_complete       = vnt_sw_scan_complete,
 907         .get_stats              = vnt_get_stats,
 908         .get_tsf                = vnt_get_tsf,
 909         .set_tsf                = vnt_set_tsf,
 910         .reset_tsf              = vnt_reset_tsf,
 911 };
 912
 913 int vnt_init(struct vnt_private *priv)
 914 {
 915         if (!(vnt_init_registers(priv)))
 916                 return -EAGAIN;
 917
 918         SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
 919
 920         vnt_init_bands(priv);
 921
 922         if (ieee80211_register_hw(priv->hw))
 923                 return -ENODEV;
 924
 925         priv->mac_hw = true;
 926
 927         vnt_radio_power_off(priv);
 928
 929         return 0;
 930 }
 931
 932 static int
 933 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 934 {
 935         struct usb_device *udev;
 936         struct vnt_private *priv;
 937         struct ieee80211_hw *hw;
 938         struct wiphy *wiphy;
 939         int rc = 0;
 940
 941         udev = usb_get_dev(interface_to_usbdev(intf));
 942
 943         dev_notice(&udev->dev, "%s Ver. %s\n",
 944                    DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
 945         dev_notice(&udev->dev,
 946                    "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
 947
 948         hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
 949         if (!hw) {
 950                 dev_err(&udev->dev, "could not register ieee80211_hw\n");
 951                 rc = -ENOMEM;
 952                 goto err_nomem;
 953         }
 954
 955         priv = hw->priv;
 956         priv->hw = hw;
 957         priv->usb = udev;
 958
 959         vnt_set_options(priv);
 960
 961         spin_lock_init(&priv->lock);
 962         mutex_init(&priv->usb_lock);
 963
 964         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
 965
 966         usb_set_intfdata(intf, priv);
 967
 968         wiphy = priv->hw->wiphy;
 969
 970         wiphy->frag_threshold = FRAG_THRESH_DEF;
 971         wiphy->rts_threshold = RTS_THRESH_DEF;
 972         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 973                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
 974
 975         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
 976         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 977         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 978         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
 979         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 980
 981         priv->hw->max_signal = 100;
 982
 983         SET_IEEE80211_DEV(priv->hw, &intf->dev);
 984
 985         rc = usb_reset_device(priv->usb);
 986         if (rc)
 987                 dev_warn(&priv->usb->dev,
 988                          "%s reset fail status=%d\n", __func__, rc);
 989
 990         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 991         vnt_reset_command_timer(priv);
 992
 993         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
 994
 995         return 0;
 996
 997 err_nomem:
 998         usb_put_dev(udev);
 999
1000         return rc;
1001 }
1002
1003 static void vt6656_disconnect(struct usb_interface *intf)
1004 {
1005         struct vnt_private *priv = usb_get_intfdata(intf);
1006
1007         if (!priv)
1008                 return;
1009
1010         if (priv->mac_hw)
1011                 ieee80211_unregister_hw(priv->hw);
1012
1013         usb_set_intfdata(intf, NULL);
1014         usb_put_dev(interface_to_usbdev(intf));
1015
1016         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1017
1018         ieee80211_free_hw(priv->hw);
1019 }
1020
1021 #ifdef CONFIG_PM
1022
1023 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1024 {
1025         return 0;
1026 }
1027
1028 static int vt6656_resume(struct usb_interface *intf)
1029 {
1030         return 0;
1031 }
1032
1033 #endif /* CONFIG_PM */
1034
1035 MODULE_DEVICE_TABLE(usb, vt6656_table);
1036
1037 static struct usb_driver vt6656_driver = {
1038         .name =         DEVICE_NAME,
1039         .probe =        vt6656_probe,
1040         .disconnect =   vt6656_disconnect,
1041         .id_table =     vt6656_table,
1042 #ifdef CONFIG_PM
1043         .suspend = vt6656_suspend,
1044         .resume = vt6656_resume,
1045 #endif /* CONFIG_PM */
1046 };
1047
1048 module_usb_driver(vt6656_driver);