drivers/net/wireless/adm8211.c

   1
   2 /*
   3  * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
   4  *
   5  * Copyright (c) 2003, Jouni Malinen <j@w1.fi>
   6  * Copyright (c) 2004-2007, Michael Wu <flamingice@sourmilk.net>
   7  * Some parts copyright (c) 2003 by David Young <dyoung@pobox.com>
   8  * and used with permission.
   9  *
  10  * Much thanks to Infineon-ADMtek for their support of this driver.
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation. See README and COPYING for
  15  * more details.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/if.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/slab.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/pci.h>
  25 #include <linux/delay.h>
  26 #include <linux/crc32.h>
  27 #include <linux/eeprom_93cx6.h>
  28 #include <linux/module.h>
  29 #include <net/mac80211.h>
  30
  31 #include "adm8211.h"
  32
  33 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  34 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
  35 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
  36 MODULE_SUPPORTED_DEVICE("ADM8211");
  37 MODULE_LICENSE("GPL");
  38
  39 static unsigned int tx_ring_size __read_mostly = 16;
  40 static unsigned int rx_ring_size __read_mostly = 16;
  41
  42 module_param(tx_ring_size, uint, 0);
  43 module_param(rx_ring_size, uint, 0);
  44
  45 static DEFINE_PCI_DEVICE_TABLE(adm8211_pci_id_table) = {
  46         /* ADMtek ADM8211 */
  47         { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
  48         { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
  49         { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
  50         { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
  51         { 0 }
  52 };
  53
  54 static struct ieee80211_rate adm8211_rates[] = {
  55         { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  56         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  57         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  58         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  59         { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
  60 };
  61
  62 static const struct ieee80211_channel adm8211_channels[] = {
  63         { .center_freq = 2412},
  64         { .center_freq = 2417},
  65         { .center_freq = 2422},
  66         { .center_freq = 2427},
  67         { .center_freq = 2432},
  68         { .center_freq = 2437},
  69         { .center_freq = 2442},
  70         { .center_freq = 2447},
  71         { .center_freq = 2452},
  72         { .center_freq = 2457},
  73         { .center_freq = 2462},
  74         { .center_freq = 2467},
  75         { .center_freq = 2472},
  76         { .center_freq = 2484},
  77 };
  78
  79
  80 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
  81 {
  82         struct adm8211_priv *priv = eeprom->data;
  83         u32 reg = ADM8211_CSR_READ(SPR);
  84
  85         eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
  86         eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
  87         eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
  88         eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
  89 }
  90
  91 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
  92 {
  93         struct adm8211_priv *priv = eeprom->data;
  94         u32 reg = 0x4000 | ADM8211_SPR_SRS;
  95
  96         if (eeprom->reg_data_in)
  97                 reg |= ADM8211_SPR_SDI;
  98         if (eeprom->reg_data_out)
  99                 reg |= ADM8211_SPR_SDO;
 100         if (eeprom->reg_data_clock)
 101                 reg |= ADM8211_SPR_SCLK;
 102         if (eeprom->reg_chip_select)
 103                 reg |= ADM8211_SPR_SCS;
 104
 105         ADM8211_CSR_WRITE(SPR, reg);
 106         ADM8211_CSR_READ(SPR);          /* eeprom_delay */
 107 }
 108
 109 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
 110 {
 111         struct adm8211_priv *priv = dev->priv;
 112         unsigned int words, i;
 113         struct ieee80211_chan_range chan_range;
 114         u16 cr49;
 115         struct eeprom_93cx6 eeprom = {
 116                 .data           = priv,
 117                 .register_read  = adm8211_eeprom_register_read,
 118                 .register_write = adm8211_eeprom_register_write
 119         };
 120
 121         if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
 122                 /* 256 * 16-bit = 512 bytes */
 123                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 124                 words = 256;
 125         } else {
 126                 /* 64 * 16-bit = 128 bytes */
 127                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 128                 words = 64;
 129         }
 130
 131         priv->eeprom_len = words * 2;
 132         priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
 133         if (!priv->eeprom)
 134                 return -ENOMEM;
 135
 136         eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
 137
 138         cr49 = le16_to_cpu(priv->eeprom->cr49);
 139         priv->rf_type = (cr49 >> 3) & 0x7;
 140         switch (priv->rf_type) {
 141         case ADM8211_TYPE_INTERSIL:
 142         case ADM8211_TYPE_RFMD:
 143         case ADM8211_TYPE_MARVEL:
 144         case ADM8211_TYPE_AIROHA:
 145         case ADM8211_TYPE_ADMTEK:
 146                 break;
 147
 148         default:
 149                 if (priv->pdev->revision < ADM8211_REV_CA)
 150                         priv->rf_type = ADM8211_TYPE_RFMD;
 151                 else
 152                         priv->rf_type = ADM8211_TYPE_AIROHA;
 153
 154                 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
 155                        pci_name(priv->pdev), (cr49 >> 3) & 0x7);
 156         }
 157
 158         priv->bbp_type = cr49 & 0x7;
 159         switch (priv->bbp_type) {
 160         case ADM8211_TYPE_INTERSIL:
 161         case ADM8211_TYPE_RFMD:
 162         case ADM8211_TYPE_MARVEL:
 163         case ADM8211_TYPE_AIROHA:
 164         case ADM8211_TYPE_ADMTEK:
 165                 break;
 166         default:
 167                 if (priv->pdev->revision < ADM8211_REV_CA)
 168                         priv->bbp_type = ADM8211_TYPE_RFMD;
 169                 else
 170                         priv->bbp_type = ADM8211_TYPE_ADMTEK;
 171
 172                 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
 173                        pci_name(priv->pdev), cr49 >> 3);
 174         }
 175
 176         if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
 177                 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
 178                        pci_name(priv->pdev), priv->eeprom->country_code);
 179
 180                 chan_range = cranges[2];
 181         } else
 182                 chan_range = cranges[priv->eeprom->country_code];
 183
 184         printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
 185                pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
 186
 187         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
 188
 189         memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
 190         priv->band.channels = priv->channels;
 191         priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
 192         priv->band.bitrates = adm8211_rates;
 193         priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
 194
 195         for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
 196                 if (i < chan_range.min || i > chan_range.max)
 197                         priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
 198
 199         switch (priv->eeprom->specific_bbptype) {
 200         case ADM8211_BBP_RFMD3000:
 201         case ADM8211_BBP_RFMD3002:
 202         case ADM8211_BBP_ADM8011:
 203                 priv->specific_bbptype = priv->eeprom->specific_bbptype;
 204                 break;
 205
 206         default:
 207                 if (priv->pdev->revision < ADM8211_REV_CA)
 208                         priv->specific_bbptype = ADM8211_BBP_RFMD3000;
 209                 else
 210                         priv->specific_bbptype = ADM8211_BBP_ADM8011;
 211
 212                 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
 213                        pci_name(priv->pdev), priv->eeprom->specific_bbptype);
 214         }
 215
 216         switch (priv->eeprom->specific_rftype) {
 217         case ADM8211_RFMD2948:
 218         case ADM8211_RFMD2958:
 219         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 220         case ADM8211_MAX2820:
 221         case ADM8211_AL2210L:
 222                 priv->transceiver_type = priv->eeprom->specific_rftype;
 223                 break;
 224
 225         default:
 226                 if (priv->pdev->revision == ADM8211_REV_BA)
 227                         priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
 228                 else if (priv->pdev->revision == ADM8211_REV_CA)
 229                         priv->transceiver_type = ADM8211_AL2210L;
 230                 else if (priv->pdev->revision == ADM8211_REV_AB)
 231                         priv->transceiver_type = ADM8211_RFMD2948;
 232
 233                 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
 234                        pci_name(priv->pdev), priv->eeprom->specific_rftype);
 235
 236                 break;
 237         }
 238
 239         printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
 240                "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
 241                priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
 242
 243         return 0;
 244 }
 245
 246 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
 247                                       u32 addr, u32 data)
 248 {
 249         struct adm8211_priv *priv = dev->priv;
 250
 251         ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
 252                           (priv->pdev->revision < ADM8211_REV_BA ?
 253                            0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
 254         ADM8211_CSR_READ(WEPCTL);
 255         msleep(1);
 256
 257         ADM8211_CSR_WRITE(WESK, data);
 258         ADM8211_CSR_READ(WESK);
 259         msleep(1);
 260 }
 261
 262 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
 263                                      unsigned int addr, u8 *buf,
 264                                      unsigned int len)
 265 {
 266         struct adm8211_priv *priv = dev->priv;
 267         u32 reg = ADM8211_CSR_READ(WEPCTL);
 268         unsigned int i;
 269
 270         if (priv->pdev->revision < ADM8211_REV_BA) {
 271                 for (i = 0; i < len; i += 2) {
 272                         u16 val = buf[i] | (buf[i + 1] << 8);
 273                         adm8211_write_sram(dev, addr + i / 2, val);
 274                 }
 275         } else {
 276                 for (i = 0; i < len; i += 4) {
 277                         u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
 278                                   (buf[i + 2] << 16) | (buf[i + 3] << 24);
 279                         adm8211_write_sram(dev, addr + i / 4, val);
 280                 }
 281         }
 282
 283         ADM8211_CSR_WRITE(WEPCTL, reg);
 284 }
 285
 286 static void adm8211_clear_sram(struct ieee80211_hw *dev)
 287 {
 288         struct adm8211_priv *priv = dev->priv;
 289         u32 reg = ADM8211_CSR_READ(WEPCTL);
 290         unsigned int addr;
 291
 292         for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
 293                 adm8211_write_sram(dev, addr, 0);
 294
 295         ADM8211_CSR_WRITE(WEPCTL, reg);
 296 }
 297
 298 static int adm8211_get_stats(struct ieee80211_hw *dev,
 299                              struct ieee80211_low_level_stats *stats)
 300 {
 301         struct adm8211_priv *priv = dev->priv;
 302
 303         memcpy(stats, &priv->stats, sizeof(*stats));
 304
 305         return 0;
 306 }
 307
 308 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
 309 {
 310         struct adm8211_priv *priv = dev->priv;
 311         unsigned int dirty_tx;
 312
 313         spin_lock(&priv->lock);
 314
 315         for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
 316                 unsigned int entry = dirty_tx % priv->tx_ring_size;
 317                 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
 318                 struct ieee80211_tx_info *txi;
 319                 struct adm8211_tx_ring_info *info;
 320                 struct sk_buff *skb;
 321
 322                 if (status & TDES0_CONTROL_OWN ||
 323                     !(status & TDES0_CONTROL_DONE))
 324                         break;
 325
 326                 info = &priv->tx_buffers[entry];
 327                 skb = info->skb;
 328                 txi = IEEE80211_SKB_CB(skb);
 329
 330                 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
 331
 332                 pci_unmap_single(priv->pdev, info->mapping,
 333                                  info->skb->len, PCI_DMA_TODEVICE);
 334
 335                 ieee80211_tx_info_clear_status(txi);
 336
 337                 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
 338                 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
 339                 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
 340                     !(status & TDES0_STATUS_ES))
 341                         txi->flags |= IEEE80211_TX_STAT_ACK;
 342
 343                 ieee80211_tx_status_irqsafe(dev, skb);
 344
 345                 info->skb = NULL;
 346         }
 347
 348         if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
 349                 ieee80211_wake_queue(dev, 0);
 350
 351         priv->dirty_tx = dirty_tx;
 352         spin_unlock(&priv->lock);
 353 }
 354
 355
 356 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
 357 {
 358         struct adm8211_priv *priv = dev->priv;
 359         unsigned int entry = priv->cur_rx % priv->rx_ring_size;
 360         u32 status;
 361         unsigned int pktlen;
 362         struct sk_buff *skb, *newskb;
 363         unsigned int limit = priv->rx_ring_size;
 364         u8 rssi, rate;
 365
 366         while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
 367                 if (!limit--)
 368                         break;
 369
 370                 status = le32_to_cpu(priv->rx_ring[entry].status);
 371                 rate = (status & RDES0_STATUS_RXDR) >> 12;
 372                 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
 373                         RDES1_STATUS_RSSI;
 374
 375                 pktlen = status & RDES0_STATUS_FL;
 376                 if (pktlen > RX_PKT_SIZE) {
 377                         if (net_ratelimit())
 378                                 wiphy_debug(dev->wiphy, "frame too long (%d)\n",
 379                                             pktlen);
 380                         pktlen = RX_PKT_SIZE;
 381                 }
 382
 383                 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
 384                         skb = NULL; /* old buffer will be reused */
 385                         /* TODO: update RX error stats */
 386                         /* TODO: check RDES0_STATUS_CRC*E */
 387                 } else if (pktlen < RX_COPY_BREAK) {
 388                         skb = dev_alloc_skb(pktlen);
 389                         if (skb) {
 390                                 pci_dma_sync_single_for_cpu(
 391                                         priv->pdev,
 392                                         priv->rx_buffers[entry].mapping,
 393                                         pktlen, PCI_DMA_FROMDEVICE);
 394                                 memcpy(skb_put(skb, pktlen),
 395                                        skb_tail_pointer(priv->rx_buffers[entry].skb),
 396                                        pktlen);
 397                                 pci_dma_sync_single_for_device(
 398                                         priv->pdev,
 399                                         priv->rx_buffers[entry].mapping,
 400                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 401                         }
 402                 } else {
 403                         newskb = dev_alloc_skb(RX_PKT_SIZE);
 404                         if (newskb) {
 405                                 skb = priv->rx_buffers[entry].skb;
 406                                 skb_put(skb, pktlen);
 407                                 pci_unmap_single(
 408                                         priv->pdev,
 409                                         priv->rx_buffers[entry].mapping,
 410                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 411                                 priv->rx_buffers[entry].skb = newskb;
 412                                 priv->rx_buffers[entry].mapping =
 413                                         pci_map_single(priv->pdev,
 414                                                        skb_tail_pointer(newskb),
 415                                                        RX_PKT_SIZE,
 416                                                        PCI_DMA_FROMDEVICE);
 417                         } else {
 418                                 skb = NULL;
 419                                 /* TODO: update rx dropped stats */
 420                         }
 421
 422                         priv->rx_ring[entry].buffer1 =
 423                                 cpu_to_le32(priv->rx_buffers[entry].mapping);
 424                 }
 425
 426                 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
 427                                                           RDES0_STATUS_SQL);
 428                 priv->rx_ring[entry].length =
 429                         cpu_to_le32(RX_PKT_SIZE |
 430                                     (entry == priv->rx_ring_size - 1 ?
 431                                      RDES1_CONTROL_RER : 0));
 432
 433                 if (skb) {
 434                         struct ieee80211_rx_status rx_status = {0};
 435
 436                         if (priv->pdev->revision < ADM8211_REV_CA)
 437                                 rx_status.signal = rssi;
 438                         else
 439                                 rx_status.signal = 100 - rssi;
 440
 441                         rx_status.rate_idx = rate;
 442
 443                         rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
 444                         rx_status.band = IEEE80211_BAND_2GHZ;
 445
 446                         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
 447                         ieee80211_rx_irqsafe(dev, skb);
 448                 }
 449
 450                 entry = (++priv->cur_rx) % priv->rx_ring_size;
 451         }
 452
 453         /* TODO: check LPC and update stats? */
 454 }
 455
 456
 457 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
 458 {
 459 #define ADM8211_INT(x)                                          \
 460 do {                                                            \
 461         if (unlikely(stsr & ADM8211_STSR_ ## x))                \
 462                 wiphy_debug(dev->wiphy, "%s\n", #x);            \
 463 } while (0)
 464
 465         struct ieee80211_hw *dev = dev_id;
 466         struct adm8211_priv *priv = dev->priv;
 467         u32 stsr = ADM8211_CSR_READ(STSR);
 468         ADM8211_CSR_WRITE(STSR, stsr);
 469         if (stsr == 0xffffffff)
 470                 return IRQ_HANDLED;
 471
 472         if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
 473                 return IRQ_HANDLED;
 474
 475         if (stsr & ADM8211_STSR_RCI)
 476                 adm8211_interrupt_rci(dev);
 477         if (stsr & ADM8211_STSR_TCI)
 478                 adm8211_interrupt_tci(dev);
 479
 480         ADM8211_INT(PCF);
 481         ADM8211_INT(BCNTC);
 482         ADM8211_INT(GPINT);
 483         ADM8211_INT(ATIMTC);
 484         ADM8211_INT(TSFTF);
 485         ADM8211_INT(TSCZ);
 486         ADM8211_INT(SQL);
 487         ADM8211_INT(WEPTD);
 488         ADM8211_INT(ATIME);
 489         ADM8211_INT(TEIS);
 490         ADM8211_INT(FBE);
 491         ADM8211_INT(REIS);
 492         ADM8211_INT(GPTT);
 493         ADM8211_INT(RPS);
 494         ADM8211_INT(RDU);
 495         ADM8211_INT(TUF);
 496         ADM8211_INT(TPS);
 497
 498         return IRQ_HANDLED;
 499
 500 #undef ADM8211_INT
 501 }
 502
 503 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
 504 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev,         \
 505                                            u16 addr, u32 value) {            \
 506         struct adm8211_priv *priv = dev->priv;                               \
 507         unsigned int i;                                                      \
 508         u32 reg, bitbuf;                                                     \
 509                                                                              \
 510         value &= v_mask;                                                     \
 511         addr &= a_mask;                                                      \
 512         bitbuf = (value << v_shift) | (addr << a_shift);                     \
 513                                                                              \
 514         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1);                 \
 515         ADM8211_CSR_READ(SYNRF);                                             \
 516         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0);                 \
 517         ADM8211_CSR_READ(SYNRF);                                             \
 518                                                                              \
 519         if (prewrite) {                                                      \
 520                 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0);     \
 521                 ADM8211_CSR_READ(SYNRF);                                     \
 522         }                                                                    \
 523                                                                              \
 524         for (i = 0; i <= bits; i++) {                                        \
 525                 if (bitbuf & (1 << (bits - i)))                              \
 526                         reg = ADM8211_SYNRF_WRITE_SYNDATA_1;                 \
 527                 else                                                         \
 528                         reg = ADM8211_SYNRF_WRITE_SYNDATA_0;                 \
 529                                                                              \
 530                 ADM8211_CSR_WRITE(SYNRF, reg);                               \
 531                 ADM8211_CSR_READ(SYNRF);                                     \
 532                                                                              \
 533                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
 534                 ADM8211_CSR_READ(SYNRF);                                     \
 535                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
 536                 ADM8211_CSR_READ(SYNRF);                                     \
 537         }                                                                    \
 538                                                                              \
 539         if (postwrite == 1) {                                                \
 540                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0);   \
 541                 ADM8211_CSR_READ(SYNRF);                                     \
 542         }                                                                    \
 543         if (postwrite == 2) {                                                \
 544                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1);   \
 545                 ADM8211_CSR_READ(SYNRF);                                     \
 546         }                                                                    \
 547                                                                              \
 548         ADM8211_CSR_WRITE(SYNRF, 0);                                         \
 549         ADM8211_CSR_READ(SYNRF);                                             \
 550 }
 551
 552 WRITE_SYN(max2820,  0x00FFF, 0, 0x0F, 12, 15, 1, 1)
 553 WRITE_SYN(al2210l,  0xFFFFF, 4, 0x0F,  0, 23, 1, 1)
 554 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
 555 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F,  0, 21, 0, 2)
 556
 557 #undef WRITE_SYN
 558
 559 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
 560 {
 561         struct adm8211_priv *priv = dev->priv;
 562         unsigned int timeout;
 563         u32 reg;
 564
 565         timeout = 10;
 566         while (timeout > 0) {
 567                 reg = ADM8211_CSR_READ(BBPCTL);
 568                 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
 569                         break;
 570                 timeout--;
 571                 msleep(2);
 572         }
 573
 574         if (timeout == 0) {
 575                 wiphy_debug(dev->wiphy,
 576                             "adm8211_write_bbp(%d,%d) failed prewrite (reg=0x%08x)\n",
 577                             addr, data, reg);
 578                 return -ETIMEDOUT;
 579         }
 580
 581         switch (priv->bbp_type) {
 582         case ADM8211_TYPE_INTERSIL:
 583                 reg = ADM8211_BBPCTL_MMISEL;    /* three wire interface */
 584                 break;
 585         case ADM8211_TYPE_RFMD:
 586                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 587                       (0x01 << 18);
 588                 break;
 589         case ADM8211_TYPE_ADMTEK:
 590                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 591                       (0x05 << 18);
 592                 break;
 593         }
 594         reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
 595
 596         ADM8211_CSR_WRITE(BBPCTL, reg);
 597
 598         timeout = 10;
 599         while (timeout > 0) {
 600                 reg = ADM8211_CSR_READ(BBPCTL);
 601                 if (!(reg & ADM8211_BBPCTL_WR))
 602                         break;
 603                 timeout--;
 604                 msleep(2);
 605         }
 606
 607         if (timeout == 0) {
 608                 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
 609                                   ~ADM8211_BBPCTL_WR);
 610                 wiphy_debug(dev->wiphy,
 611                             "adm8211_write_bbp(%d,%d) failed postwrite (reg=0x%08x)\n",
 612                             addr, data, reg);
 613                 return -ETIMEDOUT;
 614         }
 615
 616         return 0;
 617 }
 618
 619 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
 620 {
 621         static const u32 adm8211_rfmd2958_reg5[] =
 622                 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
 623                  0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
 624         static const u32 adm8211_rfmd2958_reg6[] =
 625                 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
 626                  0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
 627
 628         struct adm8211_priv *priv = dev->priv;
 629         u8 ant_power = priv->ant_power > 0x3F ?
 630                 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
 631         u8 tx_power = priv->tx_power > 0x3F ?
 632                 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
 633         u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
 634                 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
 635         u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
 636                 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
 637         u32 reg;
 638
 639         ADM8211_IDLE();
 640
 641         /* Program synthesizer to new channel */
 642         switch (priv->transceiver_type) {
 643         case ADM8211_RFMD2958:
 644         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 645                 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
 646                 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
 647
 648                 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
 649                         adm8211_rfmd2958_reg5[chan - 1]);
 650                 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
 651                         adm8211_rfmd2958_reg6[chan - 1]);
 652                 break;
 653
 654         case ADM8211_RFMD2948:
 655                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
 656                                               SI4126_MAIN_XINDIV2);
 657                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
 658                                               SI4126_POWERDOWN_PDIB |
 659                                               SI4126_POWERDOWN_PDRB);
 660                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
 661                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
 662                                               (chan == 14 ?
 663                                                2110 : (2033 + (chan * 5))));
 664                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
 665                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
 666                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
 667                 break;
 668
 669         case ADM8211_MAX2820:
 670                 adm8211_rf_write_syn_max2820(dev, 0x3,
 671                         (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
 672                 break;
 673
 674         case ADM8211_AL2210L:
 675                 adm8211_rf_write_syn_al2210l(dev, 0x0,
 676                         (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
 677                 break;
 678
 679         default:
 680                 wiphy_debug(dev->wiphy, "unsupported transceiver type %d\n",
 681                             priv->transceiver_type);
 682                 break;
 683         }
 684
 685         /* write BBP regs */
 686         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 687
 688         /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
 689         /* TODO: remove if SMC 2635W doesn't need this */
 690         if (priv->transceiver_type == ADM8211_RFMD2948) {
 691                 reg = ADM8211_CSR_READ(GPIO);
 692                 reg &= 0xfffc0000;
 693                 reg |= ADM8211_CSR_GPIO_EN0;
 694                 if (chan != 14)
 695                         reg |= ADM8211_CSR_GPIO_O0;
 696                 ADM8211_CSR_WRITE(GPIO, reg);
 697         }
 698
 699         if (priv->transceiver_type == ADM8211_RFMD2958) {
 700                 /* set PCNT2 */
 701                 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
 702                 /* set PCNT1 P_DESIRED/MID_BIAS */
 703                 reg = le16_to_cpu(priv->eeprom->cr49);
 704                 reg >>= 13;
 705                 reg <<= 15;
 706                 reg |= ant_power << 9;
 707                 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
 708                 /* set TXRX TX_GAIN */
 709                 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
 710                         (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
 711         } else {
 712                 reg = ADM8211_CSR_READ(PLCPHD);
 713                 reg &= 0xff00ffff;
 714                 reg |= tx_power << 18;
 715                 ADM8211_CSR_WRITE(PLCPHD, reg);
 716         }
 717
 718         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 719                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 720         ADM8211_CSR_READ(SYNRF);
 721         msleep(30);
 722
 723         /* RF3000 BBP */
 724         if (priv->transceiver_type != ADM8211_RFMD2958)
 725                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
 726                                   tx_power<<2);
 727         adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
 728         adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
 729         adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
 730                                      priv->eeprom->cr28 : 0);
 731         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 732
 733         ADM8211_CSR_WRITE(SYNRF, 0);
 734
 735         /* Nothing to do for ADMtek BBP */
 736         } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
 737                 wiphy_debug(dev->wiphy, "unsupported BBP type %d\n",
 738                             priv->bbp_type);
 739
 740         ADM8211_RESTORE();
 741
 742         /* update current channel for adhoc (and maybe AP mode) */
 743         reg = ADM8211_CSR_READ(CAP0);
 744         reg &= ~0xF;
 745         reg |= chan;
 746         ADM8211_CSR_WRITE(CAP0, reg);
 747
 748         return 0;
 749 }
 750
 751 static void adm8211_update_mode(struct ieee80211_hw *dev)
 752 {
 753         struct adm8211_priv *priv = dev->priv;
 754
 755         ADM8211_IDLE();
 756
 757         priv->soft_rx_crc = 0;
 758         switch (priv->mode) {
 759         case NL80211_IFTYPE_STATION:
 760                 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
 761                 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
 762                 break;
 763         case NL80211_IFTYPE_ADHOC:
 764                 priv->nar &= ~ADM8211_NAR_PR;
 765                 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
 766
 767                 /* don't trust the error bits on rev 0x20 and up in adhoc */
 768                 if (priv->pdev->revision >= ADM8211_REV_BA)
 769                         priv->soft_rx_crc = 1;
 770                 break;
 771         case NL80211_IFTYPE_MONITOR:
 772                 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
 773                 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
 774                 break;
 775         }
 776
 777         ADM8211_RESTORE();
 778 }
 779
 780 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
 781 {
 782         struct adm8211_priv *priv = dev->priv;
 783
 784         switch (priv->transceiver_type) {
 785         case ADM8211_RFMD2958:
 786         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 787                 /* comments taken from ADMtek vendor driver */
 788
 789                 /* Reset RF2958 after power on */
 790                 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
 791                 /* Initialize RF VCO Core Bias to maximum */
 792                 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
 793                 /* Initialize IF PLL */
 794                 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
 795                 /* Initialize IF PLL Coarse Tuning */
 796                 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
 797                 /* Initialize RF PLL */
 798                 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
 799                 /* Initialize RF PLL Coarse Tuning */
 800                 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
 801                 /* Initialize TX gain and filter BW (R9) */
 802                 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
 803                         (priv->transceiver_type == ADM8211_RFMD2958 ?
 804                          0x10050 : 0x00050));
 805                 /* Initialize CAL register */
 806                 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
 807                 break;
 808
 809         case ADM8211_MAX2820:
 810                 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
 811                 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
 812                 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
 813                 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
 814                 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
 815                 break;
 816
 817         case ADM8211_AL2210L:
 818                 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
 819                 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
 820                 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
 821                 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
 822                 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
 823                 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
 824                 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
 825                 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
 826                 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
 827                 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
 828                 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
 829                 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
 830                 break;
 831
 832         case ADM8211_RFMD2948:
 833         default:
 834                 break;
 835         }
 836 }
 837
 838 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
 839 {
 840         struct adm8211_priv *priv = dev->priv;
 841         u32 reg;
 842
 843         /* write addresses */
 844         if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
 845                 ADM8211_CSR_WRITE(MMIWA,  0x100E0C0A);
 846                 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
 847                 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
 848         } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
 849                    priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 850                 /* check specific BBP type */
 851                 switch (priv->specific_bbptype) {
 852                 case ADM8211_BBP_RFMD3000:
 853                 case ADM8211_BBP_RFMD3002:
 854                         ADM8211_CSR_WRITE(MMIWA,  0x00009101);
 855                         ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
 856                         break;
 857
 858                 case ADM8211_BBP_ADM8011:
 859                         ADM8211_CSR_WRITE(MMIWA,  0x00008903);
 860                         ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
 861
 862                         reg = ADM8211_CSR_READ(BBPCTL);
 863                         reg &= ~ADM8211_BBPCTL_TYPE;
 864                         reg |= 0x5 << 18;
 865                         ADM8211_CSR_WRITE(BBPCTL, reg);
 866                         break;
 867                 }
 868
 869                 switch (priv->pdev->revision) {
 870                 case ADM8211_REV_CA:
 871                         if (priv->transceiver_type == ADM8211_RFMD2958 ||
 872                             priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
 873                             priv->transceiver_type == ADM8211_RFMD2948)
 874                                 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
 875                         else if (priv->transceiver_type == ADM8211_MAX2820 ||
 876                                  priv->transceiver_type == ADM8211_AL2210L)
 877                                 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
 878                         break;
 879
 880                 case ADM8211_REV_BA:
 881                         reg  = ADM8211_CSR_READ(MMIRD1);
 882                         reg &= 0x0000FFFF;
 883                         reg |= 0x7e100000;
 884                         ADM8211_CSR_WRITE(MMIRD1, reg);
 885                         break;
 886
 887                 case ADM8211_REV_AB:
 888                 case ADM8211_REV_AF:
 889                 default:
 890                         ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
 891                         break;
 892                 }
 893
 894                 /* For RFMD */
 895                 ADM8211_CSR_WRITE(MACTEST, 0x800);
 896         }
 897
 898         adm8211_hw_init_syn(dev);
 899
 900         /* Set RF Power control IF pin to PE1+PHYRST# */
 901         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 902                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 903         ADM8211_CSR_READ(SYNRF);
 904         msleep(20);
 905
 906         /* write BBP regs */
 907         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 908                 /* RF3000 BBP */
 909                 /* another set:
 910                  * 11: c8
 911                  * 14: 14
 912                  * 15: 50 (chan 1..13; chan 14: d0)
 913                  * 1c: 00
 914                  * 1d: 84
 915                  */
 916                 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
 917                 /* antenna selection: diversity */
 918                 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
 919                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
 920                 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
 921                 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
 922
 923                 if (priv->eeprom->major_version < 2) {
 924                         adm8211_write_bbp(dev, 0x1c, 0x00);
 925                         adm8211_write_bbp(dev, 0x1d, 0x80);
 926                 } else {
 927                         if (priv->pdev->revision == ADM8211_REV_BA)
 928                                 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
 929                         else
 930                                 adm8211_write_bbp(dev, 0x1c, 0x00);
 931
 932                         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 933                 }
 934         } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 935                 /* reset baseband */
 936                 adm8211_write_bbp(dev, 0x00, 0xFF);
 937                 /* antenna selection: diversity */
 938                 adm8211_write_bbp(dev, 0x07, 0x0A);
 939
 940                 /* TODO: find documentation for this */
 941                 switch (priv->transceiver_type) {
 942                 case ADM8211_RFMD2958:
 943                 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 944                         adm8211_write_bbp(dev, 0x00, 0x00);
 945                         adm8211_write_bbp(dev, 0x01, 0x00);
 946                         adm8211_write_bbp(dev, 0x02, 0x00);
 947                         adm8211_write_bbp(dev, 0x03, 0x00);
 948                         adm8211_write_bbp(dev, 0x06, 0x0f);
 949                         adm8211_write_bbp(dev, 0x09, 0x00);
 950                         adm8211_write_bbp(dev, 0x0a, 0x00);
 951                         adm8211_write_bbp(dev, 0x0b, 0x00);
 952                         adm8211_write_bbp(dev, 0x0c, 0x00);
 953                         adm8211_write_bbp(dev, 0x0f, 0xAA);
 954                         adm8211_write_bbp(dev, 0x10, 0x8c);
 955                         adm8211_write_bbp(dev, 0x11, 0x43);
 956                         adm8211_write_bbp(dev, 0x18, 0x40);
 957                         adm8211_write_bbp(dev, 0x20, 0x23);
 958                         adm8211_write_bbp(dev, 0x21, 0x02);
 959                         adm8211_write_bbp(dev, 0x22, 0x28);
 960                         adm8211_write_bbp(dev, 0x23, 0x30);
 961                         adm8211_write_bbp(dev, 0x24, 0x2d);
 962                         adm8211_write_bbp(dev, 0x28, 0x35);
 963                         adm8211_write_bbp(dev, 0x2a, 0x8c);
 964                         adm8211_write_bbp(dev, 0x2b, 0x81);
 965                         adm8211_write_bbp(dev, 0x2c, 0x44);
 966                         adm8211_write_bbp(dev, 0x2d, 0x0A);
 967                         adm8211_write_bbp(dev, 0x29, 0x40);
 968                         adm8211_write_bbp(dev, 0x60, 0x08);
 969                         adm8211_write_bbp(dev, 0x64, 0x01);
 970                         break;
 971
 972                 case ADM8211_MAX2820:
 973                         adm8211_write_bbp(dev, 0x00, 0x00);
 974                         adm8211_write_bbp(dev, 0x01, 0x00);
 975                         adm8211_write_bbp(dev, 0x02, 0x00);
 976                         adm8211_write_bbp(dev, 0x03, 0x00);
 977                         adm8211_write_bbp(dev, 0x06, 0x0f);
 978                         adm8211_write_bbp(dev, 0x09, 0x05);
 979                         adm8211_write_bbp(dev, 0x0a, 0x02);
 980                         adm8211_write_bbp(dev, 0x0b, 0x00);
 981                         adm8211_write_bbp(dev, 0x0c, 0x0f);
 982                         adm8211_write_bbp(dev, 0x0f, 0x55);
 983                         adm8211_write_bbp(dev, 0x10, 0x8d);
 984                         adm8211_write_bbp(dev, 0x11, 0x43);
 985                         adm8211_write_bbp(dev, 0x18, 0x4a);
 986                         adm8211_write_bbp(dev, 0x20, 0x20);
 987                         adm8211_write_bbp(dev, 0x21, 0x02);
 988                         adm8211_write_bbp(dev, 0x22, 0x23);
 989                         adm8211_write_bbp(dev, 0x23, 0x30);
 990                         adm8211_write_bbp(dev, 0x24, 0x2d);
 991                         adm8211_write_bbp(dev, 0x2a, 0x8c);
 992                         adm8211_write_bbp(dev, 0x2b, 0x81);
 993                         adm8211_write_bbp(dev, 0x2c, 0x44);
 994                         adm8211_write_bbp(dev, 0x29, 0x4a);
 995                         adm8211_write_bbp(dev, 0x60, 0x2b);
 996                         adm8211_write_bbp(dev, 0x64, 0x01);
 997                         break;
 998
 999                 case ADM8211_AL2210L:
1000                         adm8211_write_bbp(dev, 0x00, 0x00);
1001                         adm8211_write_bbp(dev, 0x01, 0x00);
1002                         adm8211_write_bbp(dev, 0x02, 0x00);
1003                         adm8211_write_bbp(dev, 0x03, 0x00);
1004                         adm8211_write_bbp(dev, 0x06, 0x0f);
1005                         adm8211_write_bbp(dev, 0x07, 0x05);
1006                         adm8211_write_bbp(dev, 0x08, 0x03);
1007                         adm8211_write_bbp(dev, 0x09, 0x00);
1008                         adm8211_write_bbp(dev, 0x0a, 0x00);
1009                         adm8211_write_bbp(dev, 0x0b, 0x00);
1010                         adm8211_write_bbp(dev, 0x0c, 0x10);
1011                         adm8211_write_bbp(dev, 0x0f, 0x55);
1012                         adm8211_write_bbp(dev, 0x10, 0x8d);
1013                         adm8211_write_bbp(dev, 0x11, 0x43);
1014                         adm8211_write_bbp(dev, 0x18, 0x4a);
1015                         adm8211_write_bbp(dev, 0x20, 0x20);
1016                         adm8211_write_bbp(dev, 0x21, 0x02);
1017                         adm8211_write_bbp(dev, 0x22, 0x23);
1018                         adm8211_write_bbp(dev, 0x23, 0x30);
1019                         adm8211_write_bbp(dev, 0x24, 0x2d);
1020                         adm8211_write_bbp(dev, 0x2a, 0xaa);
1021                         adm8211_write_bbp(dev, 0x2b, 0x81);
1022                         adm8211_write_bbp(dev, 0x2c, 0x44);
1023                         adm8211_write_bbp(dev, 0x29, 0xfa);
1024                         adm8211_write_bbp(dev, 0x60, 0x2d);
1025                         adm8211_write_bbp(dev, 0x64, 0x01);
1026                         break;
1027
1028                 case ADM8211_RFMD2948:
1029                         break;
1030
1031                 default:
1032                         wiphy_debug(dev->wiphy, "unsupported transceiver %d\n",
1033                                     priv->transceiver_type);
1034                         break;
1035                 }
1036         } else
1037                 wiphy_debug(dev->wiphy, "unsupported BBP %d\n", priv->bbp_type);
1038
1039         ADM8211_CSR_WRITE(SYNRF, 0);
1040
1041         /* Set RF CAL control source to MAC control */
1042         reg = ADM8211_CSR_READ(SYNCTL);
1043         reg |= ADM8211_SYNCTL_SELCAL;
1044         ADM8211_CSR_WRITE(SYNCTL, reg);
1045
1046         return 0;
1047 }
1048
1049 /* configures hw beacons/probe responses */
1050 static int adm8211_set_rate(struct ieee80211_hw *dev)
1051 {
1052         struct adm8211_priv *priv = dev->priv;
1053         u32 reg;
1054         int i = 0;
1055         u8 rate_buf[12] = {0};
1056
1057         /* write supported rates */
1058         if (priv->pdev->revision != ADM8211_REV_BA) {
1059                 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1060                 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1061                         rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1062         } else {
1063                 /* workaround for rev BA specific bug */
1064                 rate_buf[0] = 0x04;
1065                 rate_buf[1] = 0x82;
1066                 rate_buf[2] = 0x04;
1067                 rate_buf[3] = 0x0b;
1068                 rate_buf[4] = 0x16;
1069         }
1070
1071         adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1072                                  ARRAY_SIZE(adm8211_rates) + 1);
1073
1074         reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1075         reg |= 1 << 15; /* short preamble */
1076         reg |= 110 << 24;
1077         ADM8211_CSR_WRITE(PLCPHD, reg);
1078
1079         /* MTMLT   = 512 TU (max TX MSDU lifetime)
1080          * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1081          * SRTYLIM = 224 (short retry limit, TX header value is default) */
1082         ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1083
1084         return 0;
1085 }
1086
1087 static void adm8211_hw_init(struct ieee80211_hw *dev)
1088 {
1089         struct adm8211_priv *priv = dev->priv;
1090         u32 reg;
1091         u8 cline;
1092
1093         reg = ADM8211_CSR_READ(PAR);
1094         reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1095         reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1096
1097         if (!pci_set_mwi(priv->pdev)) {
1098                 reg |= 0x1 << 24;
1099                 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1100
1101                 switch (cline) {
1102                 case  0x8: reg |= (0x1 << 14);
1103                            break;
1104                 case 0x16: reg |= (0x2 << 14);
1105                            break;
1106                 case 0x32: reg |= (0x3 << 14);
1107                            break;
1108                   default: reg |= (0x0 << 14);
1109                            break;
1110                 }
1111         }
1112
1113         ADM8211_CSR_WRITE(PAR, reg);
1114
1115         reg = ADM8211_CSR_READ(CSR_TEST1);
1116         reg &= ~(0xF << 28);
1117         reg |= (1 << 28) | (1 << 31);
1118         ADM8211_CSR_WRITE(CSR_TEST1, reg);
1119
1120         /* lose link after 4 lost beacons */
1121         reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1122         ADM8211_CSR_WRITE(WCSR, reg);
1123
1124         /* Disable APM, enable receive FIFO threshold, and set drain receive
1125          * threshold to store-and-forward */
1126         reg = ADM8211_CSR_READ(CMDR);
1127         reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1128         reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1129         ADM8211_CSR_WRITE(CMDR, reg);
1130
1131         adm8211_set_rate(dev);
1132
1133         /* 4-bit values:
1134          * PWR1UP   = 8 * 2 ms
1135          * PWR0PAPE = 8 us or 5 us
1136          * PWR1PAPE = 1 us or 3 us
1137          * PWR0TRSW = 5 us
1138          * PWR1TRSW = 12 us
1139          * PWR0PE2  = 13 us
1140          * PWR1PE2  = 1 us
1141          * PWR0TXPE = 8 or 6 */
1142         if (priv->pdev->revision < ADM8211_REV_CA)
1143                 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1144         else
1145                 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1146
1147         /* Enable store and forward for transmit */
1148         priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1149         ADM8211_CSR_WRITE(NAR, priv->nar);
1150
1151         /* Reset RF */
1152         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1153         ADM8211_CSR_READ(SYNRF);
1154         msleep(10);
1155         ADM8211_CSR_WRITE(SYNRF, 0);
1156         ADM8211_CSR_READ(SYNRF);
1157         msleep(5);
1158
1159         /* Set CFP Max Duration to 0x10 TU */
1160         reg = ADM8211_CSR_READ(CFPP);
1161         reg &= ~(0xffff << 8);
1162         reg |= 0x0010 << 8;
1163         ADM8211_CSR_WRITE(CFPP, reg);
1164
1165         /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1166          * TUCNT = 0x3ff - Tu counter 1024 us  */
1167         ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1168
1169         /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1170          * DIFS=50 us, EIFS=100 us */
1171         if (priv->pdev->revision < ADM8211_REV_CA)
1172                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1173                                         (50 << 9)  | 100);
1174         else
1175                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1176                                         (50 << 9)  | 100);
1177
1178         /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1179          * RMRD = 2346 * 8 + 1 us (max RX duration)  */
1180         ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1181
1182         /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1183         ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1184
1185         /* Initialize BBP (and SYN) */
1186         adm8211_hw_init_bbp(dev);
1187
1188         /* make sure interrupts are off */
1189         ADM8211_CSR_WRITE(IER, 0);
1190
1191         /* ACK interrupts */
1192         ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1193
1194         /* Setup WEP (turns it off for now) */
1195         reg = ADM8211_CSR_READ(MACTEST);
1196         reg &= ~(7 << 20);
1197         ADM8211_CSR_WRITE(MACTEST, reg);
1198
1199         reg = ADM8211_CSR_READ(WEPCTL);
1200         reg &= ~ADM8211_WEPCTL_WEPENABLE;
1201         reg |= ADM8211_WEPCTL_WEPRXBYP;
1202         ADM8211_CSR_WRITE(WEPCTL, reg);
1203
1204         /* Clear the missed-packet counter. */
1205         ADM8211_CSR_READ(LPC);
1206 }
1207
1208 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1209 {
1210         struct adm8211_priv *priv = dev->priv;
1211         u32 reg, tmp;
1212         int timeout = 100;
1213
1214         /* Power-on issue */
1215         /* TODO: check if this is necessary */
1216         ADM8211_CSR_WRITE(FRCTL, 0);
1217
1218         /* Reset the chip */
1219         tmp = ADM8211_CSR_READ(PAR);
1220         ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1221
1222         while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1223                 msleep(50);
1224
1225         if (timeout <= 0)
1226                 return -ETIMEDOUT;
1227
1228         ADM8211_CSR_WRITE(PAR, tmp);
1229
1230         if (priv->pdev->revision == ADM8211_REV_BA &&
1231             (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1232              priv->transceiver_type == ADM8211_RFMD2958)) {
1233                 reg = ADM8211_CSR_READ(CSR_TEST1);
1234                 reg |= (1 << 4) | (1 << 5);
1235                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1236         } else if (priv->pdev->revision == ADM8211_REV_CA) {
1237                 reg = ADM8211_CSR_READ(CSR_TEST1);
1238                 reg &= ~((1 << 4) | (1 << 5));
1239                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1240         }
1241
1242         ADM8211_CSR_WRITE(FRCTL, 0);
1243
1244         reg = ADM8211_CSR_READ(CSR_TEST0);
1245         reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1246         ADM8211_CSR_WRITE(CSR_TEST0, reg);
1247
1248         adm8211_clear_sram(dev);
1249
1250         return 0;
1251 }
1252
1253 static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
1254                             struct ieee80211_vif *vif)
1255 {
1256         struct adm8211_priv *priv = dev->priv;
1257         u32 tsftl;
1258         u64 tsft;
1259
1260         tsftl = ADM8211_CSR_READ(TSFTL);
1261         tsft = ADM8211_CSR_READ(TSFTH);
1262         tsft <<= 32;
1263         tsft |= tsftl;
1264
1265         return tsft;
1266 }
1267
1268 static void adm8211_set_interval(struct ieee80211_hw *dev,
1269                                  unsigned short bi, unsigned short li)
1270 {
1271         struct adm8211_priv *priv = dev->priv;
1272         u32 reg;
1273
1274         /* BP (beacon interval) = data->beacon_interval
1275          * LI (listen interval) = data->listen_interval (in beacon intervals) */
1276         reg = (bi << 16) | li;
1277         ADM8211_CSR_WRITE(BPLI, reg);
1278 }
1279
1280 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1281 {
1282         struct adm8211_priv *priv = dev->priv;
1283         u32 reg;
1284
1285         ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1286         reg = ADM8211_CSR_READ(ABDA1);
1287         reg &= 0x0000ffff;
1288         reg |= (bssid[4] << 16) | (bssid[5] << 24);
1289         ADM8211_CSR_WRITE(ABDA1, reg);
1290 }
1291
1292 static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1293 {
1294         struct adm8211_priv *priv = dev->priv;
1295         struct ieee80211_conf *conf = &dev->conf;
1296         int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1297
1298         if (channel != priv->channel) {
1299                 priv->channel = channel;
1300                 adm8211_rf_set_channel(dev, priv->channel);
1301         }
1302
1303         return 0;
1304 }
1305
1306 static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1307                                      struct ieee80211_vif *vif,
1308                                      struct ieee80211_bss_conf *conf,
1309                                      u32 changes)
1310 {
1311         struct adm8211_priv *priv = dev->priv;
1312
1313         if (!(changes & BSS_CHANGED_BSSID))
1314                 return;
1315
1316         if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1317                 adm8211_set_bssid(dev, conf->bssid);
1318                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1319         }
1320 }
1321
1322 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1323                                      struct netdev_hw_addr_list *mc_list)
1324 {
1325         unsigned int bit_nr;
1326         u32 mc_filter[2];
1327         struct netdev_hw_addr *ha;
1328
1329         mc_filter[1] = mc_filter[0] = 0;
1330
1331         netdev_hw_addr_list_for_each(ha, mc_list) {
1332                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1333
1334                 bit_nr &= 0x3F;
1335                 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1336         }
1337
1338         return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1339 }
1340
1341 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1342                                      unsigned int changed_flags,
1343                                      unsigned int *total_flags,
1344                                      u64 multicast)
1345 {
1346         static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1347         struct adm8211_priv *priv = dev->priv;
1348         unsigned int new_flags;
1349         u32 mc_filter[2];
1350
1351         mc_filter[0] = multicast;
1352         mc_filter[1] = multicast >> 32;
1353
1354         new_flags = 0;
1355
1356         if (*total_flags & FIF_PROMISC_IN_BSS) {
1357                 new_flags |= FIF_PROMISC_IN_BSS;
1358                 priv->nar |= ADM8211_NAR_PR;
1359                 priv->nar &= ~ADM8211_NAR_MM;
1360                 mc_filter[1] = mc_filter[0] = ~0;
1361         } else if (*total_flags & FIF_ALLMULTI || multicast == ~(0ULL)) {
1362                 new_flags |= FIF_ALLMULTI;
1363                 priv->nar &= ~ADM8211_NAR_PR;
1364                 priv->nar |= ADM8211_NAR_MM;
1365                 mc_filter[1] = mc_filter[0] = ~0;
1366         } else {
1367                 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
1368         }
1369
1370         ADM8211_IDLE_RX();
1371
1372         ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
1373         ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
1374         ADM8211_CSR_READ(NAR);
1375
1376         if (priv->nar & ADM8211_NAR_PR)
1377                 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1378         else
1379                 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1380
1381         if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1382                 adm8211_set_bssid(dev, bcast);
1383         else
1384                 adm8211_set_bssid(dev, priv->bssid);
1385
1386         ADM8211_RESTORE();
1387
1388         *total_flags = new_flags;
1389 }
1390
1391 static int adm8211_add_interface(struct ieee80211_hw *dev,
1392                                  struct ieee80211_vif *vif)
1393 {
1394         struct adm8211_priv *priv = dev->priv;
1395         if (priv->mode != NL80211_IFTYPE_MONITOR)
1396                 return -EOPNOTSUPP;
1397
1398         switch (vif->type) {
1399         case NL80211_IFTYPE_STATION:
1400                 priv->mode = vif->type;
1401                 break;
1402         default:
1403                 return -EOPNOTSUPP;
1404         }
1405
1406         ADM8211_IDLE();
1407
1408         ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)vif->addr));
1409         ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(vif->addr + 4)));
1410
1411         adm8211_update_mode(dev);
1412
1413         ADM8211_RESTORE();
1414
1415         return 0;
1416 }
1417
1418 static void adm8211_remove_interface(struct ieee80211_hw *dev,
1419                                      struct ieee80211_vif *vif)
1420 {
1421         struct adm8211_priv *priv = dev->priv;
1422         priv->mode = NL80211_IFTYPE_MONITOR;
1423 }
1424
1425 static int adm8211_init_rings(struct ieee80211_hw *dev)
1426 {
1427         struct adm8211_priv *priv = dev->priv;
1428         struct adm8211_desc *desc = NULL;
1429         struct adm8211_rx_ring_info *rx_info;
1430         struct adm8211_tx_ring_info *tx_info;
1431         unsigned int i;
1432
1433         for (i = 0; i < priv->rx_ring_size; i++) {
1434                 desc = &priv->rx_ring[i];
1435                 desc->status = 0;
1436                 desc->length = cpu_to_le32(RX_PKT_SIZE);
1437                 priv->rx_buffers[i].skb = NULL;
1438         }
1439         /* Mark the end of RX ring; hw returns to base address after this
1440          * descriptor */
1441         desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1442
1443         for (i = 0; i < priv->rx_ring_size; i++) {
1444                 desc = &priv->rx_ring[i];
1445                 rx_info = &priv->rx_buffers[i];
1446
1447                 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1448                 if (rx_info->skb == NULL)
1449                         break;
1450                 rx_info->mapping = pci_map_single(priv->pdev,
1451                                                   skb_tail_pointer(rx_info->skb),
1452                                                   RX_PKT_SIZE,
1453                                                   PCI_DMA_FROMDEVICE);
1454                 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1455                 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1456         }
1457
1458         /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1459         for (i = 0; i < priv->tx_ring_size; i++) {
1460                 desc = &priv->tx_ring[i];
1461                 tx_info = &priv->tx_buffers[i];
1462
1463                 tx_info->skb = NULL;
1464                 tx_info->mapping = 0;
1465                 desc->status = 0;
1466         }
1467         desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1468
1469         priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1470         ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1471         ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1472
1473         return 0;
1474 }
1475
1476 static void adm8211_free_rings(struct ieee80211_hw *dev)
1477 {
1478         struct adm8211_priv *priv = dev->priv;
1479         unsigned int i;
1480
1481         for (i = 0; i < priv->rx_ring_size; i++) {
1482                 if (!priv->rx_buffers[i].skb)
1483                         continue;
1484
1485                 pci_unmap_single(
1486                         priv->pdev,
1487                         priv->rx_buffers[i].mapping,
1488                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1489
1490                 dev_kfree_skb(priv->rx_buffers[i].skb);
1491         }
1492
1493         for (i = 0; i < priv->tx_ring_size; i++) {
1494                 if (!priv->tx_buffers[i].skb)
1495                         continue;
1496
1497                 pci_unmap_single(priv->pdev,
1498                                  priv->tx_buffers[i].mapping,
1499                                  priv->tx_buffers[i].skb->len,
1500                                  PCI_DMA_TODEVICE);
1501
1502                 dev_kfree_skb(priv->tx_buffers[i].skb);
1503         }
1504 }
1505
1506 static int adm8211_start(struct ieee80211_hw *dev)
1507 {
1508         struct adm8211_priv *priv = dev->priv;
1509         int retval;
1510
1511         /* Power up MAC and RF chips */
1512         retval = adm8211_hw_reset(dev);
1513         if (retval) {
1514                 wiphy_err(dev->wiphy, "hardware reset failed\n");
1515                 goto fail;
1516         }
1517
1518         retval = adm8211_init_rings(dev);
1519         if (retval) {
1520                 wiphy_err(dev->wiphy, "failed to initialize rings\n");
1521                 goto fail;
1522         }
1523
1524         /* Init hardware */
1525         adm8211_hw_init(dev);
1526         adm8211_rf_set_channel(dev, priv->channel);
1527
1528         retval = request_irq(priv->pdev->irq, adm8211_interrupt,
1529                              IRQF_SHARED, "adm8211", dev);
1530         if (retval) {
1531                 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1532                 goto fail;
1533         }
1534
1535         ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1536                                ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1537                                ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1538         priv->mode = NL80211_IFTYPE_MONITOR;
1539         adm8211_update_mode(dev);
1540         ADM8211_CSR_WRITE(RDR, 0);
1541
1542         adm8211_set_interval(dev, 100, 10);
1543         return 0;
1544
1545 fail:
1546         return retval;
1547 }
1548
1549 static void adm8211_stop(struct ieee80211_hw *dev)
1550 {
1551         struct adm8211_priv *priv = dev->priv;
1552
1553         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1554         priv->nar = 0;
1555         ADM8211_CSR_WRITE(NAR, 0);
1556         ADM8211_CSR_WRITE(IER, 0);
1557         ADM8211_CSR_READ(NAR);
1558
1559         free_irq(priv->pdev->irq, dev);
1560
1561         adm8211_free_rings(dev);
1562 }
1563
1564 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1565                                    int plcp_signal, int short_preamble)
1566 {
1567         /* Alternative calculation from NetBSD: */
1568
1569 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1570 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
1571 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1572 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
1573 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
1574 #define IEEE80211_DUR_DS_SLOW_ACK       112
1575 #define IEEE80211_DUR_DS_FAST_ACK       56
1576 #define IEEE80211_DUR_DS_SLOW_CTS       112
1577 #define IEEE80211_DUR_DS_FAST_CTS       56
1578 #define IEEE80211_DUR_DS_SLOT           20
1579 #define IEEE80211_DUR_DS_SIFS           10
1580
1581         int remainder;
1582
1583         *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1584                 / plcp_signal;
1585
1586         if (plcp_signal <= PLCP_SIGNAL_2M)
1587                 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1588                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1589                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1590                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1591                              IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1592         else
1593                 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1594                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1595                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1596                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1597                              IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1598
1599         /* lengthen duration if long preamble */
1600         if (!short_preamble)
1601                 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1602                              IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1603                         3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1604                              IEEE80211_DUR_DS_FAST_PLCPHDR);
1605
1606
1607         *plcp = (80 * len) / plcp_signal;
1608         remainder = (80 * len) % plcp_signal;
1609         if (plcp_signal == PLCP_SIGNAL_11M &&
1610             remainder <= 30 && remainder > 0)
1611                 *plcp = (*plcp | 0x8000) + 1;
1612         else if (remainder)
1613                 (*plcp)++;
1614 }
1615
1616 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1617 static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1618                            u16 plcp_signal,
1619                            size_t hdrlen)
1620 {
1621         struct adm8211_priv *priv = dev->priv;
1622         unsigned long flags;
1623         dma_addr_t mapping;
1624         unsigned int entry;
1625         u32 flag;
1626
1627         mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1628                                  PCI_DMA_TODEVICE);
1629
1630         spin_lock_irqsave(&priv->lock, flags);
1631
1632         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1633                 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1634         else
1635                 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1636
1637         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1638                 ieee80211_stop_queue(dev, 0);
1639
1640         entry = priv->cur_tx % priv->tx_ring_size;
1641
1642         priv->tx_buffers[entry].skb = skb;
1643         priv->tx_buffers[entry].mapping = mapping;
1644         priv->tx_buffers[entry].hdrlen = hdrlen;
1645         priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1646
1647         if (entry == priv->tx_ring_size - 1)
1648                 flag |= TDES1_CONTROL_TER;
1649         priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1650
1651         /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1652         flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1653         priv->tx_ring[entry].status = cpu_to_le32(flag);
1654
1655         priv->cur_tx++;
1656
1657         spin_unlock_irqrestore(&priv->lock, flags);
1658
1659         /* Trigger transmit poll */
1660         ADM8211_CSR_WRITE(TDR, 0);
1661 }
1662
1663 /* Put adm8211_tx_hdr on skb and transmit */
1664 static void adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1665 {
1666         struct adm8211_tx_hdr *txhdr;
1667         size_t payload_len, hdrlen;
1668         int plcp, dur, len, plcp_signal, short_preamble;
1669         struct ieee80211_hdr *hdr;
1670         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1671         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1672         u8 rc_flags;
1673
1674         rc_flags = info->control.rates[0].flags;
1675         short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1676         plcp_signal = txrate->bitrate;
1677
1678         hdr = (struct ieee80211_hdr *)skb->data;
1679         hdrlen = ieee80211_hdrlen(hdr->frame_control);
1680         memcpy(skb->cb, skb->data, hdrlen);
1681         hdr = (struct ieee80211_hdr *)skb->cb;
1682         skb_pull(skb, hdrlen);
1683         payload_len = skb->len;
1684
1685         txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
1686         memset(txhdr, 0, sizeof(*txhdr));
1687         memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1688         txhdr->signal = plcp_signal;
1689         txhdr->frame_body_size = cpu_to_le16(payload_len);
1690         txhdr->frame_control = hdr->frame_control;
1691
1692         len = hdrlen + payload_len + FCS_LEN;
1693
1694         txhdr->frag = cpu_to_le16(0x0FFF);
1695         adm8211_calc_durations(&dur, &plcp, payload_len,
1696                                len, plcp_signal, short_preamble);
1697         txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1698         txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1699         txhdr->dur_frag_head = cpu_to_le16(dur);
1700         txhdr->dur_frag_tail = cpu_to_le16(dur);
1701
1702         txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1703
1704         if (short_preamble)
1705                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1706
1707         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1708                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1709
1710         txhdr->retry_limit = info->control.rates[0].count;
1711
1712         adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);
1713 }
1714
1715 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1716 {
1717         struct adm8211_priv *priv = dev->priv;
1718         unsigned int ring_size;
1719
1720         priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1721                                    sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1722         if (!priv->rx_buffers)
1723                 return -ENOMEM;
1724
1725         priv->tx_buffers = (void *)priv->rx_buffers +
1726                            sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1727
1728         /* Allocate TX/RX descriptors */
1729         ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1730                     sizeof(struct adm8211_desc) * priv->tx_ring_size;
1731         priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1732                                              &priv->rx_ring_dma);
1733
1734         if (!priv->rx_ring) {
1735                 kfree(priv->rx_buffers);
1736                 priv->rx_buffers = NULL;
1737                 priv->tx_buffers = NULL;
1738                 return -ENOMEM;
1739         }
1740
1741         priv->tx_ring = (struct adm8211_desc *)(priv->rx_ring +
1742                                                 priv->rx_ring_size);
1743         priv->tx_ring_dma = priv->rx_ring_dma +
1744                             sizeof(struct adm8211_desc) * priv->rx_ring_size;
1745
1746         return 0;
1747 }
1748
1749 static const struct ieee80211_ops adm8211_ops = {
1750         .tx                     = adm8211_tx,
1751         .start                  = adm8211_start,
1752         .stop                   = adm8211_stop,
1753         .add_interface          = adm8211_add_interface,
1754         .remove_interface       = adm8211_remove_interface,
1755         .config                 = adm8211_config,
1756         .bss_info_changed       = adm8211_bss_info_changed,
1757         .prepare_multicast      = adm8211_prepare_multicast,
1758         .configure_filter       = adm8211_configure_filter,
1759         .get_stats              = adm8211_get_stats,
1760         .get_tsf                = adm8211_get_tsft
1761 };
1762
1763 static int __devinit adm8211_probe(struct pci_dev *pdev,
1764                                    const struct pci_device_id *id)
1765 {
1766         struct ieee80211_hw *dev;
1767         struct adm8211_priv *priv;
1768         unsigned long mem_addr, mem_len;
1769         unsigned int io_addr, io_len;
1770         int err;
1771         u32 reg;
1772         u8 perm_addr[ETH_ALEN];
1773
1774         err = pci_enable_device(pdev);
1775         if (err) {
1776                 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1777                        pci_name(pdev));
1778                 return err;
1779         }
1780
1781         io_addr = pci_resource_start(pdev, 0);
1782         io_len = pci_resource_len(pdev, 0);
1783         mem_addr = pci_resource_start(pdev, 1);
1784         mem_len = pci_resource_len(pdev, 1);
1785         if (io_len < 256 || mem_len < 1024) {
1786                 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1787                        pci_name(pdev));
1788                 goto err_disable_pdev;
1789         }
1790
1791
1792         /* check signature */
1793         pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1794         if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1795                 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1796                        pci_name(pdev), reg);
1797                 goto err_disable_pdev;
1798         }
1799
1800         err = pci_request_regions(pdev, "adm8211");
1801         if (err) {
1802                 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1803                        pci_name(pdev));
1804                 return err; /* someone else grabbed it? don't disable it */
1805         }
1806
1807         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
1808             pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1809                 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1810                        pci_name(pdev));
1811                 goto err_free_reg;
1812         }
1813
1814         pci_set_master(pdev);
1815
1816         dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1817         if (!dev) {
1818                 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1819                        pci_name(pdev));
1820                 err = -ENOMEM;
1821                 goto err_free_reg;
1822         }
1823         priv = dev->priv;
1824         priv->pdev = pdev;
1825
1826         spin_lock_init(&priv->lock);
1827
1828         SET_IEEE80211_DEV(dev, &pdev->dev);
1829
1830         pci_set_drvdata(pdev, dev);
1831
1832         priv->map = pci_iomap(pdev, 1, mem_len);
1833         if (!priv->map)
1834                 priv->map = pci_iomap(pdev, 0, io_len);
1835
1836         if (!priv->map) {
1837                 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1838                        pci_name(pdev));
1839                 goto err_free_dev;
1840         }
1841
1842         priv->rx_ring_size = rx_ring_size;
1843         priv->tx_ring_size = tx_ring_size;
1844
1845         if (adm8211_alloc_rings(dev)) {
1846                 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1847                        pci_name(pdev));
1848                 goto err_iounmap;
1849         }
1850
1851         *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1852         *(__le16 *)&perm_addr[4] =
1853                 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1854
1855         if (!is_valid_ether_addr(perm_addr)) {
1856                 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1857                        pci_name(pdev));
1858                 random_ether_addr(perm_addr);
1859         }
1860         SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1861
1862         dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1863         /* dev->flags = IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1864         dev->flags = IEEE80211_HW_SIGNAL_UNSPEC;
1865         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1866
1867         dev->channel_change_time = 1000;
1868         dev->max_signal = 100;    /* FIXME: find better value */
1869
1870         dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1871
1872         priv->retry_limit = 3;
1873         priv->ant_power = 0x40;
1874         priv->tx_power = 0x40;
1875         priv->lpf_cutoff = 0xFF;
1876         priv->lnags_threshold = 0xFF;
1877         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1878
1879         /* Power-on issue. EEPROM won't read correctly without */
1880         if (pdev->revision >= ADM8211_REV_BA) {
1881                 ADM8211_CSR_WRITE(FRCTL, 0);
1882                 ADM8211_CSR_READ(FRCTL);
1883                 ADM8211_CSR_WRITE(FRCTL, 1);
1884                 ADM8211_CSR_READ(FRCTL);
1885                 msleep(100);
1886         }
1887
1888         err = adm8211_read_eeprom(dev);
1889         if (err) {
1890                 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1891                        pci_name(pdev));
1892                 goto err_free_desc;
1893         }
1894
1895         priv->channel = 1;
1896
1897         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1898
1899         err = ieee80211_register_hw(dev);
1900         if (err) {
1901                 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1902                        pci_name(pdev));
1903                 goto err_free_eeprom;
1904         }
1905
1906         wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
1907                    dev->wiphy->perm_addr, pdev->revision);
1908
1909         return 0;
1910
1911  err_free_eeprom:
1912         kfree(priv->eeprom);
1913
1914  err_free_desc:
1915         pci_free_consistent(pdev,
1916                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1917                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1918                             priv->rx_ring, priv->rx_ring_dma);
1919         kfree(priv->rx_buffers);
1920
1921  err_iounmap:
1922         pci_iounmap(pdev, priv->map);
1923
1924  err_free_dev:
1925         pci_set_drvdata(pdev, NULL);
1926         ieee80211_free_hw(dev);
1927
1928  err_free_reg:
1929         pci_release_regions(pdev);
1930
1931  err_disable_pdev:
1932         pci_disable_device(pdev);
1933         return err;
1934 }
1935
1936
1937 static void __devexit adm8211_remove(struct pci_dev *pdev)
1938 {
1939         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1940         struct adm8211_priv *priv;
1941
1942         if (!dev)
1943                 return;
1944
1945         ieee80211_unregister_hw(dev);
1946
1947         priv = dev->priv;
1948
1949         pci_free_consistent(pdev,
1950                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1951                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1952                             priv->rx_ring, priv->rx_ring_dma);
1953
1954         kfree(priv->rx_buffers);
1955         kfree(priv->eeprom);
1956         pci_iounmap(pdev, priv->map);
1957         pci_release_regions(pdev);
1958         pci_disable_device(pdev);
1959         ieee80211_free_hw(dev);
1960 }
1961
1962
1963 #ifdef CONFIG_PM
1964 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1965 {
1966         pci_save_state(pdev);
1967         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1968         return 0;
1969 }
1970
1971 static int adm8211_resume(struct pci_dev *pdev)
1972 {
1973         pci_set_power_state(pdev, PCI_D0);
1974         pci_restore_state(pdev);
1975         return 0;
1976 }
1977 #endif /* CONFIG_PM */
1978
1979
1980 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1981
1982 /* TODO: implement enable_wake */
1983 static struct pci_driver adm8211_driver = {
1984         .name           = "adm8211",
1985         .id_table       = adm8211_pci_id_table,
1986         .probe          = adm8211_probe,
1987         .remove         = __devexit_p(adm8211_remove),
1988 #ifdef CONFIG_PM
1989         .suspend        = adm8211_suspend,
1990         .resume         = adm8211_resume,
1991 #endif /* CONFIG_PM */
1992 };
1993
1994
1995
1996 static int __init adm8211_init(void)
1997 {
1998         return pci_register_driver(&adm8211_driver);
1999 }
2000
2001
2002 static void __exit adm8211_exit(void)
2003 {
2004         pci_unregister_driver(&adm8211_driver);
2005 }
2006
2007
2008 module_init(adm8211_init);
2009 module_exit(adm8211_exit);