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 bool vnt_alloc_bufs(struct vnt_private *priv)
 406 {
 407         struct vnt_usb_send_context *tx_context;
 408         struct vnt_rcb *rcb;
 409         int ii;
 410
 411         for (ii = 0; ii < priv->num_tx_context; ii++) {
 412                 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
 413                 if (!tx_context)
 414                         goto free_tx;
 415
 416                 priv->tx_context[ii] = tx_context;
 417                 tx_context->priv = priv;
 418                 tx_context->pkt_no = ii;
 419
 420                 /* allocate URBs */
 421                 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
 422                 if (!tx_context->urb)
 423                         goto free_tx;
 424
 425                 tx_context->in_use = false;
 426         }
 427
 428         for (ii = 0; ii < priv->num_rcb; ii++) {
 429                 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
 430                 if (!priv->rcb[ii])
 431                         goto free_rx_tx;
 432
 433                 rcb = priv->rcb[ii];
 434
 435                 rcb->priv = priv;
 436
 437                 /* allocate URBs */
 438                 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
 439                 if (!rcb->urb)
 440                         goto free_rx_tx;
 441
 442                 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
 443                 if (!rcb->skb)
 444                         goto free_rx_tx;
 445
 446                 rcb->in_use = false;
 447
 448                 /* submit rx urb */
 449                 if (vnt_submit_rx_urb(priv, rcb))
 450                         goto free_rx_tx;
 451         }
 452
 453         priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
 454         if (!priv->interrupt_urb)
 455                 goto free_rx_tx;
 456
 457         priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
 458         if (!priv->int_buf.data_buf) {
 459                 usb_free_urb(priv->interrupt_urb);
 460                 goto free_rx_tx;
 461         }
 462
 463         return true;
 464
 465 free_rx_tx:
 466         vnt_free_rx_bufs(priv);
 467
 468 free_tx:
 469         vnt_free_tx_bufs(priv);
 470
 471         return false;
 472 }
 473
 474 static void vnt_tx_80211(struct ieee80211_hw *hw,
 475                          struct ieee80211_tx_control *control,
 476                          struct sk_buff *skb)
 477 {
 478         struct vnt_private *priv = hw->priv;
 479
 480         if (vnt_tx_packet(priv, skb))
 481                 ieee80211_free_txskb(hw, skb);
 482 }
 483
 484 static int vnt_start(struct ieee80211_hw *hw)
 485 {
 486         struct vnt_private *priv = hw->priv;
 487
 488         priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
 489
 490         if (!vnt_alloc_bufs(priv)) {
 491                 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
 492                 return -ENOMEM;
 493         }
 494
 495         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 496
 497         if (vnt_init_registers(priv) == false) {
 498                 dev_dbg(&priv->usb->dev, " init register fail\n");
 499                 goto free_all;
 500         }
 501
 502         if (vnt_key_init_table(priv))
 503                 goto free_all;
 504
 505         priv->int_interval = 1;  /* bInterval is set to 1 */
 506
 507         vnt_int_start_interrupt(priv);
 508
 509         ieee80211_wake_queues(hw);
 510
 511         return 0;
 512
 513 free_all:
 514         vnt_free_rx_bufs(priv);
 515         vnt_free_tx_bufs(priv);
 516         vnt_free_int_bufs(priv);
 517
 518         usb_kill_urb(priv->interrupt_urb);
 519         usb_free_urb(priv->interrupt_urb);
 520
 521         return -ENOMEM;
 522 }
 523
 524 static void vnt_stop(struct ieee80211_hw *hw)
 525 {
 526         struct vnt_private *priv = hw->priv;
 527         int i;
 528
 529         if (!priv)
 530                 return;
 531
 532         for (i = 0; i < MAX_KEY_TABLE; i++)
 533                 vnt_mac_disable_keyentry(priv, i);
 534
 535         /* clear all keys */
 536         priv->key_entry_inuse = 0;
 537
 538         if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 539                 vnt_mac_shutdown(priv);
 540
 541         ieee80211_stop_queues(hw);
 542
 543         set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 544
 545         cancel_delayed_work_sync(&priv->run_command_work);
 546
 547         priv->cmd_running = false;
 548
 549         vnt_free_tx_bufs(priv);
 550         vnt_free_rx_bufs(priv);
 551         vnt_free_int_bufs(priv);
 552
 553         usb_kill_urb(priv->interrupt_urb);
 554         usb_free_urb(priv->interrupt_urb);
 555 }
 556
 557 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 558 {
 559         struct vnt_private *priv = hw->priv;
 560
 561         priv->vif = vif;
 562
 563         switch (vif->type) {
 564         case NL80211_IFTYPE_STATION:
 565                 break;
 566         case NL80211_IFTYPE_ADHOC:
 567                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 568
 569                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 570
 571                 break;
 572         case NL80211_IFTYPE_AP:
 573                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 574
 575                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 576
 577                 break;
 578         default:
 579                 return -EOPNOTSUPP;
 580         }
 581
 582         priv->op_mode = vif->type;
 583
 584         vnt_set_bss_mode(priv);
 585
 586         /* LED blink on TX */
 587         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 588
 589         return 0;
 590 }
 591
 592 static void vnt_remove_interface(struct ieee80211_hw *hw,
 593                                  struct ieee80211_vif *vif)
 594 {
 595         struct vnt_private *priv = hw->priv;
 596
 597         switch (vif->type) {
 598         case NL80211_IFTYPE_STATION:
 599                 break;
 600         case NL80211_IFTYPE_ADHOC:
 601                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 602                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 603                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 604                 break;
 605         case NL80211_IFTYPE_AP:
 606                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 607                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 608                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 609                 break;
 610         default:
 611                 break;
 612         }
 613
 614         vnt_radio_power_off(priv);
 615
 616         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 617
 618         /* LED slow blink */
 619         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 620 }
 621
 622 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 623 {
 624         struct vnt_private *priv = hw->priv;
 625         struct ieee80211_conf *conf = &hw->conf;
 626
 627         if (changed & IEEE80211_CONF_CHANGE_PS) {
 628                 if (conf->flags & IEEE80211_CONF_PS)
 629                         vnt_enable_power_saving(priv, conf->listen_interval);
 630                 else
 631                         vnt_disable_power_saving(priv);
 632         }
 633
 634         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
 635             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
 636                 vnt_set_channel(priv, conf->chandef.chan->hw_value);
 637
 638                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
 639                         priv->bb_type = BB_TYPE_11A;
 640                 else
 641                         priv->bb_type = BB_TYPE_11G;
 642         }
 643
 644         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 645                 if (priv->bb_type == BB_TYPE_11B)
 646                         priv->current_rate = RATE_1M;
 647                 else
 648                         priv->current_rate = RATE_54M;
 649
 650                 vnt_rf_setpower(priv, priv->current_rate,
 651                                 conf->chandef.chan->hw_value);
 652         }
 653
 654         return 0;
 655 }
 656
 657 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 658                                  struct ieee80211_vif *vif,
 659                                  struct ieee80211_bss_conf *conf, u32 changed)
 660 {
 661         struct vnt_private *priv = hw->priv;
 662
 663         priv->current_aid = conf->aid;
 664
 665         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 666                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 667
 668         if (changed & BSS_CHANGED_BASIC_RATES) {
 669                 priv->basic_rates = conf->basic_rates;
 670
 671                 vnt_update_top_rates(priv);
 672                 vnt_set_bss_mode(priv);
 673
 674                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 675         }
 676
 677         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 678                 if (conf->use_short_preamble) {
 679                         vnt_mac_enable_barker_preamble_mode(priv);
 680                         priv->preamble_type = true;
 681                 } else {
 682                         vnt_mac_disable_barker_preamble_mode(priv);
 683                         priv->preamble_type = false;
 684                 }
 685         }
 686
 687         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 688                 if (conf->use_cts_prot)
 689                         vnt_mac_enable_protect_mode(priv);
 690                 else
 691                         vnt_mac_disable_protect_mode(priv);
 692         }
 693
 694         if (changed & BSS_CHANGED_ERP_SLOT) {
 695                 if (conf->use_short_slot)
 696                         priv->short_slot_time = true;
 697                 else
 698                         priv->short_slot_time = false;
 699
 700                 vnt_set_short_slot_time(priv);
 701                 vnt_update_ifs(priv);
 702                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 703                 vnt_update_pre_ed_threshold(priv, false);
 704         }
 705
 706         if (changed & BSS_CHANGED_TXPOWER)
 707                 vnt_rf_setpower(priv, priv->current_rate,
 708                                 conf->chandef.chan->hw_value);
 709
 710         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 711                 dev_dbg(&priv->usb->dev,
 712                         "Beacon enable %d\n", conf->enable_beacon);
 713
 714                 if (conf->enable_beacon) {
 715                         vnt_beacon_enable(priv, vif, conf);
 716
 717                         vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 718                 } else {
 719                         vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 720                 }
 721         }
 722
 723         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
 724             priv->op_mode != NL80211_IFTYPE_AP) {
 725                 if (conf->assoc && conf->beacon_rate) {
 726                         vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
 727                                             TFTCTL_TSFCNTREN);
 728
 729                         vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
 730                                        conf->sync_tsf, priv->current_tsf);
 731
 732                         vnt_mac_set_beacon_interval(priv, conf->beacon_int);
 733
 734                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 735                 } else {
 736                         vnt_clear_current_tsf(priv);
 737
 738                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 739                                              TFTCTL_TSFCNTREN);
 740                 }
 741         }
 742 }
 743
 744 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 745                                  struct netdev_hw_addr_list *mc_list)
 746 {
 747         struct vnt_private *priv = hw->priv;
 748         struct netdev_hw_addr *ha;
 749         u64 mc_filter = 0;
 750         u32 bit_nr = 0;
 751
 752         netdev_hw_addr_list_for_each(ha, mc_list) {
 753                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 754
 755                 mc_filter |= 1ULL << (bit_nr & 0x3f);
 756         }
 757
 758         priv->mc_list_count = mc_list->count;
 759
 760         return mc_filter;
 761 }
 762
 763 static void vnt_configure(struct ieee80211_hw *hw,
 764                           unsigned int changed_flags,
 765                           unsigned int *total_flags, u64 multicast)
 766 {
 767         struct vnt_private *priv = hw->priv;
 768         u8 rx_mode = 0;
 769         int rc;
 770
 771         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 772
 773         rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 774                             MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 775
 776         if (!rc)
 777                 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
 778
 779         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 780
 781         if (changed_flags & FIF_ALLMULTI) {
 782                 if (*total_flags & FIF_ALLMULTI) {
 783                         if (priv->mc_list_count > 2)
 784                                 vnt_mac_set_filter(priv, ~0);
 785                         else
 786                                 vnt_mac_set_filter(priv, multicast);
 787
 788                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 789                 } else {
 790                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 791                 }
 792         }
 793
 794         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 795                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 796                         rx_mode &= ~RCR_BSSID;
 797                 else
 798                         rx_mode |= RCR_BSSID;
 799         }
 800
 801         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 802
 803         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 804 }
 805
 806 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 807                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 808                        struct ieee80211_key_conf *key)
 809 {
 810         struct vnt_private *priv = hw->priv;
 811
 812         switch (cmd) {
 813         case SET_KEY:
 814                 if (vnt_set_keys(hw, sta, vif, key))
 815                         return -EOPNOTSUPP;
 816                 break;
 817         case DISABLE_KEY:
 818                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
 819                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 820         default:
 821                 break;
 822         }
 823
 824         return 0;
 825 }
 826
 827 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
 828                               struct ieee80211_vif *vif,
 829                               const u8 *addr)
 830 {
 831         struct vnt_private *priv = hw->priv;
 832
 833         /* Set max sensitivity*/
 834         vnt_update_pre_ed_threshold(priv, true);
 835 }
 836
 837 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
 838                                  struct ieee80211_vif *vif)
 839 {
 840         struct vnt_private *priv = hw->priv;
 841
 842         /* Return sensitivity to channel level*/
 843         vnt_update_pre_ed_threshold(priv, false);
 844 }
 845
 846 static int vnt_get_stats(struct ieee80211_hw *hw,
 847                          struct ieee80211_low_level_stats *stats)
 848 {
 849         struct vnt_private *priv = hw->priv;
 850
 851         memcpy(stats, &priv->low_stats, sizeof(*stats));
 852
 853         return 0;
 854 }
 855
 856 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 857 {
 858         struct vnt_private *priv = hw->priv;
 859
 860         return priv->current_tsf;
 861 }
 862
 863 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 864                         u64 tsf)
 865 {
 866         struct vnt_private *priv = hw->priv;
 867
 868         vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
 869 }
 870
 871 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 872 {
 873         struct vnt_private *priv = hw->priv;
 874
 875         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 876
 877         vnt_clear_current_tsf(priv);
 878 }
 879
 880 static const struct ieee80211_ops vnt_mac_ops = {
 881         .tx                     = vnt_tx_80211,
 882         .start                  = vnt_start,
 883         .stop                   = vnt_stop,
 884         .add_interface          = vnt_add_interface,
 885         .remove_interface       = vnt_remove_interface,
 886         .config                 = vnt_config,
 887         .bss_info_changed       = vnt_bss_info_changed,
 888         .prepare_multicast      = vnt_prepare_multicast,
 889         .configure_filter       = vnt_configure,
 890         .set_key                = vnt_set_key,
 891         .sw_scan_start          = vnt_sw_scan_start,
 892         .sw_scan_complete       = vnt_sw_scan_complete,
 893         .get_stats              = vnt_get_stats,
 894         .get_tsf                = vnt_get_tsf,
 895         .set_tsf                = vnt_set_tsf,
 896         .reset_tsf              = vnt_reset_tsf,
 897 };
 898
 899 int vnt_init(struct vnt_private *priv)
 900 {
 901         if (!(vnt_init_registers(priv)))
 902                 return -EAGAIN;
 903
 904         SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
 905
 906         vnt_init_bands(priv);
 907
 908         if (ieee80211_register_hw(priv->hw))
 909                 return -ENODEV;
 910
 911         priv->mac_hw = true;
 912
 913         vnt_radio_power_off(priv);
 914
 915         return 0;
 916 }
 917
 918 static int
 919 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 920 {
 921         struct usb_device *udev;
 922         struct vnt_private *priv;
 923         struct ieee80211_hw *hw;
 924         struct wiphy *wiphy;
 925         int rc = 0;
 926
 927         udev = usb_get_dev(interface_to_usbdev(intf));
 928
 929         dev_notice(&udev->dev, "%s Ver. %s\n",
 930                    DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
 931         dev_notice(&udev->dev,
 932                    "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
 933
 934         hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
 935         if (!hw) {
 936                 dev_err(&udev->dev, "could not register ieee80211_hw\n");
 937                 rc = -ENOMEM;
 938                 goto err_nomem;
 939         }
 940
 941         priv = hw->priv;
 942         priv->hw = hw;
 943         priv->usb = udev;
 944
 945         vnt_set_options(priv);
 946
 947         spin_lock_init(&priv->lock);
 948         mutex_init(&priv->usb_lock);
 949
 950         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
 951
 952         usb_set_intfdata(intf, priv);
 953
 954         wiphy = priv->hw->wiphy;
 955
 956         wiphy->frag_threshold = FRAG_THRESH_DEF;
 957         wiphy->rts_threshold = RTS_THRESH_DEF;
 958         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 959                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
 960
 961         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
 962         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 963         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 964         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
 965         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 966
 967         priv->hw->max_signal = 100;
 968
 969         SET_IEEE80211_DEV(priv->hw, &intf->dev);
 970
 971         rc = usb_reset_device(priv->usb);
 972         if (rc)
 973                 dev_warn(&priv->usb->dev,
 974                          "%s reset fail status=%d\n", __func__, rc);
 975
 976         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 977         vnt_reset_command_timer(priv);
 978
 979         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
 980
 981         return 0;
 982
 983 err_nomem:
 984         usb_put_dev(udev);
 985
 986         return rc;
 987 }
 988
 989 static void vt6656_disconnect(struct usb_interface *intf)
 990 {
 991         struct vnt_private *priv = usb_get_intfdata(intf);
 992
 993         if (!priv)
 994                 return;
 995
 996         if (priv->mac_hw)
 997                 ieee80211_unregister_hw(priv->hw);
 998
 999         usb_set_intfdata(intf, NULL);
1000         usb_put_dev(interface_to_usbdev(intf));
1001
1002         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1003
1004         ieee80211_free_hw(priv->hw);
1005 }
1006
1007 #ifdef CONFIG_PM
1008
1009 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1010 {
1011         return 0;
1012 }
1013
1014 static int vt6656_resume(struct usb_interface *intf)
1015 {
1016         return 0;
1017 }
1018
1019 #endif /* CONFIG_PM */
1020
1021 MODULE_DEVICE_TABLE(usb, vt6656_table);
1022
1023 static struct usb_driver vt6656_driver = {
1024         .name =         DEVICE_NAME,
1025         .probe =        vt6656_probe,
1026         .disconnect =   vt6656_disconnect,
1027         .id_table =     vt6656_table,
1028 #ifdef CONFIG_PM
1029         .suspend = vt6656_suspend,
1030         .resume = vt6656_resume,
1031 #endif /* CONFIG_PM */
1032 };
1033
1034 module_usb_driver(vt6656_driver);