git.oblomov.eu Git - linux-2.6/blob - 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/if.h>
  20 #include <linux/skbuff.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/pci.h>
  23 #include <linux/delay.h>
  24 #include <linux/crc32.h>
  25 #include <linux/eeprom_93cx6.h>
  26 #include <net/mac80211.h>
  27
  28 #include "adm8211.h"
  29
  30 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  31 MODULE_AUTHOR("Jouni Malinen <j@w1.fi>");
  32 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
  33 MODULE_SUPPORTED_DEVICE("ADM8211");
  34 MODULE_LICENSE("GPL");
  35
  36 static unsigned int tx_ring_size __read_mostly = 16;
  37 static unsigned int rx_ring_size __read_mostly = 16;
  38
  39 module_param(tx_ring_size, uint, 0);
  40 module_param(rx_ring_size, uint, 0);
  41
  42 static struct pci_device_id adm8211_pci_id_table[] __devinitdata = {
  43         /* ADMtek ADM8211 */
  44         { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
  45         { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
  46         { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
  47         { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
  48         { 0 }
  49 };
  50
  51 static struct ieee80211_rate adm8211_rates[] = {
  52         { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  53         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  54         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  55         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  56         { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
  57 };
  58
  59 static const struct ieee80211_channel adm8211_channels[] = {
  60         { .center_freq = 2412},
  61         { .center_freq = 2417},
  62         { .center_freq = 2422},
  63         { .center_freq = 2427},
  64         { .center_freq = 2432},
  65         { .center_freq = 2437},
  66         { .center_freq = 2442},
  67         { .center_freq = 2447},
  68         { .center_freq = 2452},
  69         { .center_freq = 2457},
  70         { .center_freq = 2462},
  71         { .center_freq = 2467},
  72         { .center_freq = 2472},
  73         { .center_freq = 2484},
  74 };
  75
  76
  77 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
  78 {
  79         struct adm8211_priv *priv = eeprom->data;
  80         u32 reg = ADM8211_CSR_READ(SPR);
  81
  82         eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
  83         eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
  84         eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
  85         eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
  86 }
  87
  88 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
  89 {
  90         struct adm8211_priv *priv = eeprom->data;
  91         u32 reg = 0x4000 | ADM8211_SPR_SRS;
  92
  93         if (eeprom->reg_data_in)
  94                 reg |= ADM8211_SPR_SDI;
  95         if (eeprom->reg_data_out)
  96                 reg |= ADM8211_SPR_SDO;
  97         if (eeprom->reg_data_clock)
  98                 reg |= ADM8211_SPR_SCLK;
  99         if (eeprom->reg_chip_select)
 100                 reg |= ADM8211_SPR_SCS;
 101
 102         ADM8211_CSR_WRITE(SPR, reg);
 103         ADM8211_CSR_READ(SPR);          /* eeprom_delay */
 104 }
 105
 106 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
 107 {
 108         struct adm8211_priv *priv = dev->priv;
 109         unsigned int words, i;
 110         struct ieee80211_chan_range chan_range;
 111         u16 cr49;
 112         struct eeprom_93cx6 eeprom = {
 113                 .data           = priv,
 114                 .register_read  = adm8211_eeprom_register_read,
 115                 .register_write = adm8211_eeprom_register_write
 116         };
 117
 118         if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
 119                 /* 256 * 16-bit = 512 bytes */
 120                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 121                 words = 256;
 122         } else {
 123                 /* 64 * 16-bit = 128 bytes */
 124                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 125                 words = 64;
 126         }
 127
 128         priv->eeprom_len = words * 2;
 129         priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
 130         if (!priv->eeprom)
 131                 return -ENOMEM;
 132
 133         eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
 134
 135         cr49 = le16_to_cpu(priv->eeprom->cr49);
 136         priv->rf_type = (cr49 >> 3) & 0x7;
 137         switch (priv->rf_type) {
 138         case ADM8211_TYPE_INTERSIL:
 139         case ADM8211_TYPE_RFMD:
 140         case ADM8211_TYPE_MARVEL:
 141         case ADM8211_TYPE_AIROHA:
 142         case ADM8211_TYPE_ADMTEK:
 143                 break;
 144
 145         default:
 146                 if (priv->pdev->revision < ADM8211_REV_CA)
 147                         priv->rf_type = ADM8211_TYPE_RFMD;
 148                 else
 149                         priv->rf_type = ADM8211_TYPE_AIROHA;
 150
 151                 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
 152                        pci_name(priv->pdev), (cr49 >> 3) & 0x7);
 153         }
 154
 155         priv->bbp_type = cr49 & 0x7;
 156         switch (priv->bbp_type) {
 157         case ADM8211_TYPE_INTERSIL:
 158         case ADM8211_TYPE_RFMD:
 159         case ADM8211_TYPE_MARVEL:
 160         case ADM8211_TYPE_AIROHA:
 161         case ADM8211_TYPE_ADMTEK:
 162                 break;
 163         default:
 164                 if (priv->pdev->revision < ADM8211_REV_CA)
 165                         priv->bbp_type = ADM8211_TYPE_RFMD;
 166                 else
 167                         priv->bbp_type = ADM8211_TYPE_ADMTEK;
 168
 169                 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
 170                        pci_name(priv->pdev), cr49 >> 3);
 171         }
 172
 173         if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
 174                 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
 175                        pci_name(priv->pdev), priv->eeprom->country_code);
 176
 177                 chan_range = cranges[2];
 178         } else
 179                 chan_range = cranges[priv->eeprom->country_code];
 180
 181         printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
 182                pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
 183
 184         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
 185
 186         memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
 187         priv->band.channels = priv->channels;
 188         priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
 189         priv->band.bitrates = adm8211_rates;
 190         priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
 191
 192         for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
 193                 if (i < chan_range.min || i > chan_range.max)
 194                         priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
 195
 196         switch (priv->eeprom->specific_bbptype) {
 197         case ADM8211_BBP_RFMD3000:
 198         case ADM8211_BBP_RFMD3002:
 199         case ADM8211_BBP_ADM8011:
 200                 priv->specific_bbptype = priv->eeprom->specific_bbptype;
 201                 break;
 202
 203         default:
 204                 if (priv->pdev->revision < ADM8211_REV_CA)
 205                         priv->specific_bbptype = ADM8211_BBP_RFMD3000;
 206                 else
 207                         priv->specific_bbptype = ADM8211_BBP_ADM8011;
 208
 209                 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
 210                        pci_name(priv->pdev), priv->eeprom->specific_bbptype);
 211         }
 212
 213         switch (priv->eeprom->specific_rftype) {
 214         case ADM8211_RFMD2948:
 215         case ADM8211_RFMD2958:
 216         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 217         case ADM8211_MAX2820:
 218         case ADM8211_AL2210L:
 219                 priv->transceiver_type = priv->eeprom->specific_rftype;
 220                 break;
 221
 222         default:
 223                 if (priv->pdev->revision == ADM8211_REV_BA)
 224                         priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
 225                 else if (priv->pdev->revision == ADM8211_REV_CA)
 226                         priv->transceiver_type = ADM8211_AL2210L;
 227                 else if (priv->pdev->revision == ADM8211_REV_AB)
 228                         priv->transceiver_type = ADM8211_RFMD2948;
 229
 230                 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
 231                        pci_name(priv->pdev), priv->eeprom->specific_rftype);
 232
 233                 break;
 234         }
 235
 236         printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
 237                "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
 238                priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
 239
 240         return 0;
 241 }
 242
 243 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
 244                                       u32 addr, u32 data)
 245 {
 246         struct adm8211_priv *priv = dev->priv;
 247
 248         ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
 249                           (priv->pdev->revision < ADM8211_REV_BA ?
 250                            0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
 251         ADM8211_CSR_READ(WEPCTL);
 252         msleep(1);
 253
 254         ADM8211_CSR_WRITE(WESK, data);
 255         ADM8211_CSR_READ(WESK);
 256         msleep(1);
 257 }
 258
 259 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
 260                                      unsigned int addr, u8 *buf,
 261                                      unsigned int len)
 262 {
 263         struct adm8211_priv *priv = dev->priv;
 264         u32 reg = ADM8211_CSR_READ(WEPCTL);
 265         unsigned int i;
 266
 267         if (priv->pdev->revision < ADM8211_REV_BA) {
 268                 for (i = 0; i < len; i += 2) {
 269                         u16 val = buf[i] | (buf[i + 1] << 8);
 270                         adm8211_write_sram(dev, addr + i / 2, val);
 271                 }
 272         } else {
 273                 for (i = 0; i < len; i += 4) {
 274                         u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
 275                                   (buf[i + 2] << 16) | (buf[i + 3] << 24);
 276                         adm8211_write_sram(dev, addr + i / 4, val);
 277                 }
 278         }
 279
 280         ADM8211_CSR_WRITE(WEPCTL, reg);
 281 }
 282
 283 static void adm8211_clear_sram(struct ieee80211_hw *dev)
 284 {
 285         struct adm8211_priv *priv = dev->priv;
 286         u32 reg = ADM8211_CSR_READ(WEPCTL);
 287         unsigned int addr;
 288
 289         for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
 290                 adm8211_write_sram(dev, addr, 0);
 291
 292         ADM8211_CSR_WRITE(WEPCTL, reg);
 293 }
 294
 295 static int adm8211_get_stats(struct ieee80211_hw *dev,
 296                              struct ieee80211_low_level_stats *stats)
 297 {
 298         struct adm8211_priv *priv = dev->priv;
 299
 300         memcpy(stats, &priv->stats, sizeof(*stats));
 301
 302         return 0;
 303 }
 304
 305 static int adm8211_get_tx_stats(struct ieee80211_hw *dev,
 306                                 struct ieee80211_tx_queue_stats *stats)
 307 {
 308         struct adm8211_priv *priv = dev->priv;
 309
 310         stats[0].len = priv->cur_tx - priv->dirty_tx;
 311         stats[0].limit = priv->tx_ring_size - 2;
 312         stats[0].count = priv->dirty_tx;
 313
 314         return 0;
 315 }
 316
 317 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
 318 {
 319         struct adm8211_priv *priv = dev->priv;
 320         unsigned int dirty_tx;
 321
 322         spin_lock(&priv->lock);
 323
 324         for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
 325                 unsigned int entry = dirty_tx % priv->tx_ring_size;
 326                 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
 327                 struct ieee80211_tx_info *txi;
 328                 struct adm8211_tx_ring_info *info;
 329                 struct sk_buff *skb;
 330
 331                 if (status & TDES0_CONTROL_OWN ||
 332                     !(status & TDES0_CONTROL_DONE))
 333                         break;
 334
 335                 info = &priv->tx_buffers[entry];
 336                 skb = info->skb;
 337                 txi = IEEE80211_SKB_CB(skb);
 338
 339                 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
 340
 341                 pci_unmap_single(priv->pdev, info->mapping,
 342                                  info->skb->len, PCI_DMA_TODEVICE);
 343
 344                 ieee80211_tx_info_clear_status(txi);
 345
 346                 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
 347                 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
 348                 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
 349                     !(status & TDES0_STATUS_ES))
 350                         txi->flags |= IEEE80211_TX_STAT_ACK;
 351
 352                 ieee80211_tx_status_irqsafe(dev, skb);
 353
 354                 info->skb = NULL;
 355         }
 356
 357         if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
 358                 ieee80211_wake_queue(dev, 0);
 359
 360         priv->dirty_tx = dirty_tx;
 361         spin_unlock(&priv->lock);
 362 }
 363
 364
 365 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
 366 {
 367         struct adm8211_priv *priv = dev->priv;
 368         unsigned int entry = priv->cur_rx % priv->rx_ring_size;
 369         u32 status;
 370         unsigned int pktlen;
 371         struct sk_buff *skb, *newskb;
 372         unsigned int limit = priv->rx_ring_size;
 373         u8 rssi, rate;
 374
 375         while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
 376                 if (!limit--)
 377                         break;
 378
 379                 status = le32_to_cpu(priv->rx_ring[entry].status);
 380                 rate = (status & RDES0_STATUS_RXDR) >> 12;
 381                 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
 382                         RDES1_STATUS_RSSI;
 383
 384                 pktlen = status & RDES0_STATUS_FL;
 385                 if (pktlen > RX_PKT_SIZE) {
 386                         if (net_ratelimit())
 387                                 printk(KERN_DEBUG "%s: frame too long (%d)\n",
 388                                        wiphy_name(dev->wiphy), pktlen);
 389                         pktlen = RX_PKT_SIZE;
 390                 }
 391
 392                 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
 393                         skb = NULL; /* old buffer will be reused */
 394                         /* TODO: update RX error stats */
 395                         /* TODO: check RDES0_STATUS_CRC*E */
 396                 } else if (pktlen < RX_COPY_BREAK) {
 397                         skb = dev_alloc_skb(pktlen);
 398                         if (skb) {
 399                                 pci_dma_sync_single_for_cpu(
 400                                         priv->pdev,
 401                                         priv->rx_buffers[entry].mapping,
 402                                         pktlen, PCI_DMA_FROMDEVICE);
 403                                 memcpy(skb_put(skb, pktlen),
 404                                        skb_tail_pointer(priv->rx_buffers[entry].skb),
 405                                        pktlen);
 406                                 pci_dma_sync_single_for_device(
 407                                         priv->pdev,
 408                                         priv->rx_buffers[entry].mapping,
 409                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 410                         }
 411                 } else {
 412                         newskb = dev_alloc_skb(RX_PKT_SIZE);
 413                         if (newskb) {
 414                                 skb = priv->rx_buffers[entry].skb;
 415                                 skb_put(skb, pktlen);
 416                                 pci_unmap_single(
 417                                         priv->pdev,
 418                                         priv->rx_buffers[entry].mapping,
 419                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 420                                 priv->rx_buffers[entry].skb = newskb;
 421                                 priv->rx_buffers[entry].mapping =
 422                                         pci_map_single(priv->pdev,
 423                                                        skb_tail_pointer(newskb),
 424                                                        RX_PKT_SIZE,
 425                                                        PCI_DMA_FROMDEVICE);
 426                         } else {
 427                                 skb = NULL;
 428                                 /* TODO: update rx dropped stats */
 429                         }
 430
 431                         priv->rx_ring[entry].buffer1 =
 432                                 cpu_to_le32(priv->rx_buffers[entry].mapping);
 433                 }
 434
 435                 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
 436                                                           RDES0_STATUS_SQL);
 437                 priv->rx_ring[entry].length =
 438                         cpu_to_le32(RX_PKT_SIZE |
 439                                     (entry == priv->rx_ring_size - 1 ?
 440                                      RDES1_CONTROL_RER : 0));
 441
 442                 if (skb) {
 443                         struct ieee80211_rx_status rx_status = {0};
 444
 445                         if (priv->pdev->revision < ADM8211_REV_CA)
 446                                 rx_status.signal = rssi;
 447                         else
 448                                 rx_status.signal = 100 - rssi;
 449
 450                         rx_status.rate_idx = rate;
 451
 452                         rx_status.freq = adm8211_channels[priv->channel - 1].center_freq;
 453                         rx_status.band = IEEE80211_BAND_2GHZ;
 454
 455                         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 456                 }
 457
 458                 entry = (++priv->cur_rx) % priv->rx_ring_size;
 459         }
 460
 461         /* TODO: check LPC and update stats? */
 462 }
 463
 464
 465 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
 466 {
 467 #define ADM8211_INT(x)                                                     \
 468 do {                                                                       \
 469         if (unlikely(stsr & ADM8211_STSR_ ## x))                           \
 470                 printk(KERN_DEBUG "%s: " #x "\n", wiphy_name(dev->wiphy)); \
 471 } while (0)
 472
 473         struct ieee80211_hw *dev = dev_id;
 474         struct adm8211_priv *priv = dev->priv;
 475         u32 stsr = ADM8211_CSR_READ(STSR);
 476         ADM8211_CSR_WRITE(STSR, stsr);
 477         if (stsr == 0xffffffff)
 478                 return IRQ_HANDLED;
 479
 480         if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
 481                 return IRQ_HANDLED;
 482
 483         if (stsr & ADM8211_STSR_RCI)
 484                 adm8211_interrupt_rci(dev);
 485         if (stsr & ADM8211_STSR_TCI)
 486                 adm8211_interrupt_tci(dev);
 487
 488         ADM8211_INT(PCF);
 489         ADM8211_INT(BCNTC);
 490         ADM8211_INT(GPINT);
 491         ADM8211_INT(ATIMTC);
 492         ADM8211_INT(TSFTF);
 493         ADM8211_INT(TSCZ);
 494         ADM8211_INT(SQL);
 495         ADM8211_INT(WEPTD);
 496         ADM8211_INT(ATIME);
 497         ADM8211_INT(TEIS);
 498         ADM8211_INT(FBE);
 499         ADM8211_INT(REIS);
 500         ADM8211_INT(GPTT);
 501         ADM8211_INT(RPS);
 502         ADM8211_INT(RDU);
 503         ADM8211_INT(TUF);
 504         ADM8211_INT(TPS);
 505
 506         return IRQ_HANDLED;
 507
 508 #undef ADM8211_INT
 509 }
 510
 511 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
 512 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev,         \
 513                                            u16 addr, u32 value) {            \
 514         struct adm8211_priv *priv = dev->priv;                               \
 515         unsigned int i;                                                      \
 516         u32 reg, bitbuf;                                                     \
 517                                                                              \
 518         value &= v_mask;                                                     \
 519         addr &= a_mask;                                                      \
 520         bitbuf = (value << v_shift) | (addr << a_shift);                     \
 521                                                                              \
 522         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1);                 \
 523         ADM8211_CSR_READ(SYNRF);                                             \
 524         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0);                 \
 525         ADM8211_CSR_READ(SYNRF);                                             \
 526                                                                              \
 527         if (prewrite) {                                                      \
 528                 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0);     \
 529                 ADM8211_CSR_READ(SYNRF);                                     \
 530         }                                                                    \
 531                                                                              \
 532         for (i = 0; i <= bits; i++) {                                        \
 533                 if (bitbuf & (1 << (bits - i)))                              \
 534                         reg = ADM8211_SYNRF_WRITE_SYNDATA_1;                 \
 535                 else                                                         \
 536                         reg = ADM8211_SYNRF_WRITE_SYNDATA_0;                 \
 537                                                                              \
 538                 ADM8211_CSR_WRITE(SYNRF, reg);                               \
 539                 ADM8211_CSR_READ(SYNRF);                                     \
 540                                                                              \
 541                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
 542                 ADM8211_CSR_READ(SYNRF);                                     \
 543                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
 544                 ADM8211_CSR_READ(SYNRF);                                     \
 545         }                                                                    \
 546                                                                              \
 547         if (postwrite == 1) {                                                \
 548                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0);   \
 549                 ADM8211_CSR_READ(SYNRF);                                     \
 550         }                                                                    \
 551         if (postwrite == 2) {                                                \
 552                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1);   \
 553                 ADM8211_CSR_READ(SYNRF);                                     \
 554         }                                                                    \
 555                                                                              \
 556         ADM8211_CSR_WRITE(SYNRF, 0);                                         \
 557         ADM8211_CSR_READ(SYNRF);                                             \
 558 }
 559
 560 WRITE_SYN(max2820,  0x00FFF, 0, 0x0F, 12, 15, 1, 1)
 561 WRITE_SYN(al2210l,  0xFFFFF, 4, 0x0F,  0, 23, 1, 1)
 562 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
 563 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F,  0, 21, 0, 2)
 564
 565 #undef WRITE_SYN
 566
 567 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
 568 {
 569         struct adm8211_priv *priv = dev->priv;
 570         unsigned int timeout;
 571         u32 reg;
 572
 573         timeout = 10;
 574         while (timeout > 0) {
 575                 reg = ADM8211_CSR_READ(BBPCTL);
 576                 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
 577                         break;
 578                 timeout--;
 579                 msleep(2);
 580         }
 581
 582         if (timeout == 0) {
 583                 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
 584                        " prewrite (reg=0x%08x)\n",
 585                        wiphy_name(dev->wiphy), addr, data, reg);
 586                 return -ETIMEDOUT;
 587         }
 588
 589         switch (priv->bbp_type) {
 590         case ADM8211_TYPE_INTERSIL:
 591                 reg = ADM8211_BBPCTL_MMISEL;    /* three wire interface */
 592                 break;
 593         case ADM8211_TYPE_RFMD:
 594                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 595                       (0x01 << 18);
 596                 break;
 597         case ADM8211_TYPE_ADMTEK:
 598                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 599                       (0x05 << 18);
 600                 break;
 601         }
 602         reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
 603
 604         ADM8211_CSR_WRITE(BBPCTL, reg);
 605
 606         timeout = 10;
 607         while (timeout > 0) {
 608                 reg = ADM8211_CSR_READ(BBPCTL);
 609                 if (!(reg & ADM8211_BBPCTL_WR))
 610                         break;
 611                 timeout--;
 612                 msleep(2);
 613         }
 614
 615         if (timeout == 0) {
 616                 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
 617                                   ~ADM8211_BBPCTL_WR);
 618                 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
 619                        " postwrite (reg=0x%08x)\n",
 620                        wiphy_name(dev->wiphy), addr, data, reg);
 621                 return -ETIMEDOUT;
 622         }
 623
 624         return 0;
 625 }
 626
 627 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
 628 {
 629         static const u32 adm8211_rfmd2958_reg5[] =
 630                 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
 631                  0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
 632         static const u32 adm8211_rfmd2958_reg6[] =
 633                 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
 634                  0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
 635
 636         struct adm8211_priv *priv = dev->priv;
 637         u8 ant_power = priv->ant_power > 0x3F ?
 638                 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
 639         u8 tx_power = priv->tx_power > 0x3F ?
 640                 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
 641         u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
 642                 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
 643         u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
 644                 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
 645         u32 reg;
 646
 647         ADM8211_IDLE();
 648
 649         /* Program synthesizer to new channel */
 650         switch (priv->transceiver_type) {
 651         case ADM8211_RFMD2958:
 652         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 653                 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
 654                 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
 655
 656                 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
 657                         adm8211_rfmd2958_reg5[chan - 1]);
 658                 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
 659                         adm8211_rfmd2958_reg6[chan - 1]);
 660                 break;
 661
 662         case ADM8211_RFMD2948:
 663                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
 664                                               SI4126_MAIN_XINDIV2);
 665                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
 666                                               SI4126_POWERDOWN_PDIB |
 667                                               SI4126_POWERDOWN_PDRB);
 668                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
 669                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
 670                                               (chan == 14 ?
 671                                                2110 : (2033 + (chan * 5))));
 672                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
 673                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
 674                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
 675                 break;
 676
 677         case ADM8211_MAX2820:
 678                 adm8211_rf_write_syn_max2820(dev, 0x3,
 679                         (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
 680                 break;
 681
 682         case ADM8211_AL2210L:
 683                 adm8211_rf_write_syn_al2210l(dev, 0x0,
 684                         (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
 685                 break;
 686
 687         default:
 688                 printk(KERN_DEBUG "%s: unsupported transceiver type %d\n",
 689                        wiphy_name(dev->wiphy), priv->transceiver_type);
 690                 break;
 691         }
 692
 693         /* write BBP regs */
 694         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 695
 696         /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
 697         /* TODO: remove if SMC 2635W doesn't need this */
 698         if (priv->transceiver_type == ADM8211_RFMD2948) {
 699                 reg = ADM8211_CSR_READ(GPIO);
 700                 reg &= 0xfffc0000;
 701                 reg |= ADM8211_CSR_GPIO_EN0;
 702                 if (chan != 14)
 703                         reg |= ADM8211_CSR_GPIO_O0;
 704                 ADM8211_CSR_WRITE(GPIO, reg);
 705         }
 706
 707         if (priv->transceiver_type == ADM8211_RFMD2958) {
 708                 /* set PCNT2 */
 709                 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
 710                 /* set PCNT1 P_DESIRED/MID_BIAS */
 711                 reg = le16_to_cpu(priv->eeprom->cr49);
 712                 reg >>= 13;
 713                 reg <<= 15;
 714                 reg |= ant_power << 9;
 715                 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
 716                 /* set TXRX TX_GAIN */
 717                 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
 718                         (priv->pdev->revision < ADM8211_REV_CA ? tx_power : 0));
 719         } else {
 720                 reg = ADM8211_CSR_READ(PLCPHD);
 721                 reg &= 0xff00ffff;
 722                 reg |= tx_power << 18;
 723                 ADM8211_CSR_WRITE(PLCPHD, reg);
 724         }
 725
 726         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 727                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 728         ADM8211_CSR_READ(SYNRF);
 729         msleep(30);
 730
 731         /* RF3000 BBP */
 732         if (priv->transceiver_type != ADM8211_RFMD2958)
 733                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
 734                                   tx_power<<2);
 735         adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
 736         adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
 737         adm8211_write_bbp(dev, 0x1c, priv->pdev->revision == ADM8211_REV_BA ?
 738                                      priv->eeprom->cr28 : 0);
 739         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 740
 741         ADM8211_CSR_WRITE(SYNRF, 0);
 742
 743         /* Nothing to do for ADMtek BBP */
 744         } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
 745                 printk(KERN_DEBUG "%s: unsupported BBP type %d\n",
 746                        wiphy_name(dev->wiphy), priv->bbp_type);
 747
 748         ADM8211_RESTORE();
 749
 750         /* update current channel for adhoc (and maybe AP mode) */
 751         reg = ADM8211_CSR_READ(CAP0);
 752         reg &= ~0xF;
 753         reg |= chan;
 754         ADM8211_CSR_WRITE(CAP0, reg);
 755
 756         return 0;
 757 }
 758
 759 static void adm8211_update_mode(struct ieee80211_hw *dev)
 760 {
 761         struct adm8211_priv *priv = dev->priv;
 762
 763         ADM8211_IDLE();
 764
 765         priv->soft_rx_crc = 0;
 766         switch (priv->mode) {
 767         case NL80211_IFTYPE_STATION:
 768                 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
 769                 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
 770                 break;
 771         case NL80211_IFTYPE_ADHOC:
 772                 priv->nar &= ~ADM8211_NAR_PR;
 773                 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
 774
 775                 /* don't trust the error bits on rev 0x20 and up in adhoc */
 776                 if (priv->pdev->revision >= ADM8211_REV_BA)
 777                         priv->soft_rx_crc = 1;
 778                 break;
 779         case NL80211_IFTYPE_MONITOR:
 780                 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
 781                 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
 782                 break;
 783         }
 784
 785         ADM8211_RESTORE();
 786 }
 787
 788 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
 789 {
 790         struct adm8211_priv *priv = dev->priv;
 791
 792         switch (priv->transceiver_type) {
 793         case ADM8211_RFMD2958:
 794         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 795                 /* comments taken from ADMtek vendor driver */
 796
 797                 /* Reset RF2958 after power on */
 798                 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
 799                 /* Initialize RF VCO Core Bias to maximum */
 800                 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
 801                 /* Initialize IF PLL */
 802                 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
 803                 /* Initialize IF PLL Coarse Tuning */
 804                 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
 805                 /* Initialize RF PLL */
 806                 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
 807                 /* Initialize RF PLL Coarse Tuning */
 808                 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
 809                 /* Initialize TX gain and filter BW (R9) */
 810                 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
 811                         (priv->transceiver_type == ADM8211_RFMD2958 ?
 812                          0x10050 : 0x00050));
 813                 /* Initialize CAL register */
 814                 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
 815                 break;
 816
 817         case ADM8211_MAX2820:
 818                 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
 819                 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
 820                 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
 821                 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
 822                 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
 823                 break;
 824
 825         case ADM8211_AL2210L:
 826                 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
 827                 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
 828                 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
 829                 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
 830                 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
 831                 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
 832                 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
 833                 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
 834                 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
 835                 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
 836                 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
 837                 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
 838                 break;
 839
 840         case ADM8211_RFMD2948:
 841         default:
 842                 break;
 843         }
 844 }
 845
 846 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
 847 {
 848         struct adm8211_priv *priv = dev->priv;
 849         u32 reg;
 850
 851         /* write addresses */
 852         if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
 853                 ADM8211_CSR_WRITE(MMIWA,  0x100E0C0A);
 854                 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
 855                 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
 856         } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
 857                    priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 858                 /* check specific BBP type */
 859                 switch (priv->specific_bbptype) {
 860                 case ADM8211_BBP_RFMD3000:
 861                 case ADM8211_BBP_RFMD3002:
 862                         ADM8211_CSR_WRITE(MMIWA,  0x00009101);
 863                         ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
 864                         break;
 865
 866                 case ADM8211_BBP_ADM8011:
 867                         ADM8211_CSR_WRITE(MMIWA,  0x00008903);
 868                         ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
 869
 870                         reg = ADM8211_CSR_READ(BBPCTL);
 871                         reg &= ~ADM8211_BBPCTL_TYPE;
 872                         reg |= 0x5 << 18;
 873                         ADM8211_CSR_WRITE(BBPCTL, reg);
 874                         break;
 875                 }
 876
 877                 switch (priv->pdev->revision) {
 878                 case ADM8211_REV_CA:
 879                         if (priv->transceiver_type == ADM8211_RFMD2958 ||
 880                             priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
 881                             priv->transceiver_type == ADM8211_RFMD2948)
 882                                 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
 883                         else if (priv->transceiver_type == ADM8211_MAX2820 ||
 884                                  priv->transceiver_type == ADM8211_AL2210L)
 885                                 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
 886                         break;
 887
 888                 case ADM8211_REV_BA:
 889                         reg  = ADM8211_CSR_READ(MMIRD1);
 890                         reg &= 0x0000FFFF;
 891                         reg |= 0x7e100000;
 892                         ADM8211_CSR_WRITE(MMIRD1, reg);
 893                         break;
 894
 895                 case ADM8211_REV_AB:
 896                 case ADM8211_REV_AF:
 897                 default:
 898                         ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
 899                         break;
 900                 }
 901
 902                 /* For RFMD */
 903                 ADM8211_CSR_WRITE(MACTEST, 0x800);
 904         }
 905
 906         adm8211_hw_init_syn(dev);
 907
 908         /* Set RF Power control IF pin to PE1+PHYRST# */
 909         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 910                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 911         ADM8211_CSR_READ(SYNRF);
 912         msleep(20);
 913
 914         /* write BBP regs */
 915         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 916                 /* RF3000 BBP */
 917                 /* another set:
 918                  * 11: c8
 919                  * 14: 14
 920                  * 15: 50 (chan 1..13; chan 14: d0)
 921                  * 1c: 00
 922                  * 1d: 84
 923                  */
 924                 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
 925                 /* antenna selection: diversity */
 926                 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
 927                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
 928                 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
 929                 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
 930
 931                 if (priv->eeprom->major_version < 2) {
 932                         adm8211_write_bbp(dev, 0x1c, 0x00);
 933                         adm8211_write_bbp(dev, 0x1d, 0x80);
 934                 } else {
 935                         if (priv->pdev->revision == ADM8211_REV_BA)
 936                                 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
 937                         else
 938                                 adm8211_write_bbp(dev, 0x1c, 0x00);
 939
 940                         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 941                 }
 942         } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 943                 /* reset baseband */
 944                 adm8211_write_bbp(dev, 0x00, 0xFF);
 945                 /* antenna selection: diversity */
 946                 adm8211_write_bbp(dev, 0x07, 0x0A);
 947
 948                 /* TODO: find documentation for this */
 949                 switch (priv->transceiver_type) {
 950                 case ADM8211_RFMD2958:
 951                 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 952                         adm8211_write_bbp(dev, 0x00, 0x00);
 953                         adm8211_write_bbp(dev, 0x01, 0x00);
 954                         adm8211_write_bbp(dev, 0x02, 0x00);
 955                         adm8211_write_bbp(dev, 0x03, 0x00);
 956                         adm8211_write_bbp(dev, 0x06, 0x0f);
 957                         adm8211_write_bbp(dev, 0x09, 0x00);
 958                         adm8211_write_bbp(dev, 0x0a, 0x00);
 959                         adm8211_write_bbp(dev, 0x0b, 0x00);
 960                         adm8211_write_bbp(dev, 0x0c, 0x00);
 961                         adm8211_write_bbp(dev, 0x0f, 0xAA);
 962                         adm8211_write_bbp(dev, 0x10, 0x8c);
 963                         adm8211_write_bbp(dev, 0x11, 0x43);
 964                         adm8211_write_bbp(dev, 0x18, 0x40);
 965                         adm8211_write_bbp(dev, 0x20, 0x23);
 966                         adm8211_write_bbp(dev, 0x21, 0x02);
 967                         adm8211_write_bbp(dev, 0x22, 0x28);
 968                         adm8211_write_bbp(dev, 0x23, 0x30);
 969                         adm8211_write_bbp(dev, 0x24, 0x2d);
 970                         adm8211_write_bbp(dev, 0x28, 0x35);
 971                         adm8211_write_bbp(dev, 0x2a, 0x8c);
 972                         adm8211_write_bbp(dev, 0x2b, 0x81);
 973                         adm8211_write_bbp(dev, 0x2c, 0x44);
 974                         adm8211_write_bbp(dev, 0x2d, 0x0A);
 975                         adm8211_write_bbp(dev, 0x29, 0x40);
 976                         adm8211_write_bbp(dev, 0x60, 0x08);
 977                         adm8211_write_bbp(dev, 0x64, 0x01);
 978                         break;
 979
 980                 case ADM8211_MAX2820:
 981                         adm8211_write_bbp(dev, 0x00, 0x00);
 982                         adm8211_write_bbp(dev, 0x01, 0x00);
 983                         adm8211_write_bbp(dev, 0x02, 0x00);
 984                         adm8211_write_bbp(dev, 0x03, 0x00);
 985                         adm8211_write_bbp(dev, 0x06, 0x0f);
 986                         adm8211_write_bbp(dev, 0x09, 0x05);
 987                         adm8211_write_bbp(dev, 0x0a, 0x02);
 988                         adm8211_write_bbp(dev, 0x0b, 0x00);
 989                         adm8211_write_bbp(dev, 0x0c, 0x0f);
 990                         adm8211_write_bbp(dev, 0x0f, 0x55);
 991                         adm8211_write_bbp(dev, 0x10, 0x8d);
 992                         adm8211_write_bbp(dev, 0x11, 0x43);
 993                         adm8211_write_bbp(dev, 0x18, 0x4a);
 994                         adm8211_write_bbp(dev, 0x20, 0x20);
 995                         adm8211_write_bbp(dev, 0x21, 0x02);
 996                         adm8211_write_bbp(dev, 0x22, 0x23);
 997                         adm8211_write_bbp(dev, 0x23, 0x30);
 998                         adm8211_write_bbp(dev, 0x24, 0x2d);
 999                         adm8211_write_bbp(dev, 0x2a, 0x8c);
1000                         adm8211_write_bbp(dev, 0x2b, 0x81);
1001                         adm8211_write_bbp(dev, 0x2c, 0x44);
1002                         adm8211_write_bbp(dev, 0x29, 0x4a);
1003                         adm8211_write_bbp(dev, 0x60, 0x2b);
1004                         adm8211_write_bbp(dev, 0x64, 0x01);
1005                         break;
1006
1007                 case ADM8211_AL2210L:
1008                         adm8211_write_bbp(dev, 0x00, 0x00);
1009                         adm8211_write_bbp(dev, 0x01, 0x00);
1010                         adm8211_write_bbp(dev, 0x02, 0x00);
1011                         adm8211_write_bbp(dev, 0x03, 0x00);
1012                         adm8211_write_bbp(dev, 0x06, 0x0f);
1013                         adm8211_write_bbp(dev, 0x07, 0x05);
1014                         adm8211_write_bbp(dev, 0x08, 0x03);
1015                         adm8211_write_bbp(dev, 0x09, 0x00);
1016                         adm8211_write_bbp(dev, 0x0a, 0x00);
1017                         adm8211_write_bbp(dev, 0x0b, 0x00);
1018                         adm8211_write_bbp(dev, 0x0c, 0x10);
1019                         adm8211_write_bbp(dev, 0x0f, 0x55);
1020                         adm8211_write_bbp(dev, 0x10, 0x8d);
1021                         adm8211_write_bbp(dev, 0x11, 0x43);
1022                         adm8211_write_bbp(dev, 0x18, 0x4a);
1023                         adm8211_write_bbp(dev, 0x20, 0x20);
1024                         adm8211_write_bbp(dev, 0x21, 0x02);
1025                         adm8211_write_bbp(dev, 0x22, 0x23);
1026                         adm8211_write_bbp(dev, 0x23, 0x30);
1027                         adm8211_write_bbp(dev, 0x24, 0x2d);
1028                         adm8211_write_bbp(dev, 0x2a, 0xaa);
1029                         adm8211_write_bbp(dev, 0x2b, 0x81);
1030                         adm8211_write_bbp(dev, 0x2c, 0x44);
1031                         adm8211_write_bbp(dev, 0x29, 0xfa);
1032                         adm8211_write_bbp(dev, 0x60, 0x2d);
1033                         adm8211_write_bbp(dev, 0x64, 0x01);
1034                         break;
1035
1036                 case ADM8211_RFMD2948:
1037                         break;
1038
1039                 default:
1040                         printk(KERN_DEBUG "%s: unsupported transceiver %d\n",
1041                                wiphy_name(dev->wiphy), priv->transceiver_type);
1042                         break;
1043                 }
1044         } else
1045                 printk(KERN_DEBUG "%s: unsupported BBP %d\n",
1046                        wiphy_name(dev->wiphy), priv->bbp_type);
1047
1048         ADM8211_CSR_WRITE(SYNRF, 0);
1049
1050         /* Set RF CAL control source to MAC control */
1051         reg = ADM8211_CSR_READ(SYNCTL);
1052         reg |= ADM8211_SYNCTL_SELCAL;
1053         ADM8211_CSR_WRITE(SYNCTL, reg);
1054
1055         return 0;
1056 }
1057
1058 /* configures hw beacons/probe responses */
1059 static int adm8211_set_rate(struct ieee80211_hw *dev)
1060 {
1061         struct adm8211_priv *priv = dev->priv;
1062         u32 reg;
1063         int i = 0;
1064         u8 rate_buf[12] = {0};
1065
1066         /* write supported rates */
1067         if (priv->pdev->revision != ADM8211_REV_BA) {
1068                 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1069                 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1070                         rate_buf[i + 1] = (adm8211_rates[i].bitrate / 5) | 0x80;
1071         } else {
1072                 /* workaround for rev BA specific bug */
1073                 rate_buf[0] = 0x04;
1074                 rate_buf[1] = 0x82;
1075                 rate_buf[2] = 0x04;
1076                 rate_buf[3] = 0x0b;
1077                 rate_buf[4] = 0x16;
1078         }
1079
1080         adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1081                                  ARRAY_SIZE(adm8211_rates) + 1);
1082
1083         reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1084         reg |= 1 << 15; /* short preamble */
1085         reg |= 110 << 24;
1086         ADM8211_CSR_WRITE(PLCPHD, reg);
1087
1088         /* MTMLT   = 512 TU (max TX MSDU lifetime)
1089          * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1090          * SRTYLIM = 224 (short retry limit, TX header value is default) */
1091         ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1092
1093         return 0;
1094 }
1095
1096 static void adm8211_hw_init(struct ieee80211_hw *dev)
1097 {
1098         struct adm8211_priv *priv = dev->priv;
1099         u32 reg;
1100         u8 cline;
1101
1102         reg = ADM8211_CSR_READ(PAR);
1103         reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1104         reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1105
1106         if (!pci_set_mwi(priv->pdev)) {
1107                 reg |= 0x1 << 24;
1108                 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1109
1110                 switch (cline) {
1111                 case  0x8: reg |= (0x1 << 14);
1112                            break;
1113                 case 0x16: reg |= (0x2 << 14);
1114                            break;
1115                 case 0x32: reg |= (0x3 << 14);
1116                            break;
1117                   default: reg |= (0x0 << 14);
1118                            break;
1119                 }
1120         }
1121
1122         ADM8211_CSR_WRITE(PAR, reg);
1123
1124         reg = ADM8211_CSR_READ(CSR_TEST1);
1125         reg &= ~(0xF << 28);
1126         reg |= (1 << 28) | (1 << 31);
1127         ADM8211_CSR_WRITE(CSR_TEST1, reg);
1128
1129         /* lose link after 4 lost beacons */
1130         reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1131         ADM8211_CSR_WRITE(WCSR, reg);
1132
1133         /* Disable APM, enable receive FIFO threshold, and set drain receive
1134          * threshold to store-and-forward */
1135         reg = ADM8211_CSR_READ(CMDR);
1136         reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1137         reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1138         ADM8211_CSR_WRITE(CMDR, reg);
1139
1140         adm8211_set_rate(dev);
1141
1142         /* 4-bit values:
1143          * PWR1UP   = 8 * 2 ms
1144          * PWR0PAPE = 8 us or 5 us
1145          * PWR1PAPE = 1 us or 3 us
1146          * PWR0TRSW = 5 us
1147          * PWR1TRSW = 12 us
1148          * PWR0PE2  = 13 us
1149          * PWR1PE2  = 1 us
1150          * PWR0TXPE = 8 or 6 */
1151         if (priv->pdev->revision < ADM8211_REV_CA)
1152                 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1153         else
1154                 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1155
1156         /* Enable store and forward for transmit */
1157         priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1158         ADM8211_CSR_WRITE(NAR, priv->nar);
1159
1160         /* Reset RF */
1161         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1162         ADM8211_CSR_READ(SYNRF);
1163         msleep(10);
1164         ADM8211_CSR_WRITE(SYNRF, 0);
1165         ADM8211_CSR_READ(SYNRF);
1166         msleep(5);
1167
1168         /* Set CFP Max Duration to 0x10 TU */
1169         reg = ADM8211_CSR_READ(CFPP);
1170         reg &= ~(0xffff << 8);
1171         reg |= 0x0010 << 8;
1172         ADM8211_CSR_WRITE(CFPP, reg);
1173
1174         /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1175          * TUCNT = 0x3ff - Tu counter 1024 us  */
1176         ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1177
1178         /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1179          * DIFS=50 us, EIFS=100 us */
1180         if (priv->pdev->revision < ADM8211_REV_CA)
1181                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1182                                         (50 << 9)  | 100);
1183         else
1184                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1185                                         (50 << 9)  | 100);
1186
1187         /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1188          * RMRD = 2346 * 8 + 1 us (max RX duration)  */
1189         ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1190
1191         /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1192         ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1193
1194         /* Initialize BBP (and SYN) */
1195         adm8211_hw_init_bbp(dev);
1196
1197         /* make sure interrupts are off */
1198         ADM8211_CSR_WRITE(IER, 0);
1199
1200         /* ACK interrupts */
1201         ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1202
1203         /* Setup WEP (turns it off for now) */
1204         reg = ADM8211_CSR_READ(MACTEST);
1205         reg &= ~(7 << 20);
1206         ADM8211_CSR_WRITE(MACTEST, reg);
1207
1208         reg = ADM8211_CSR_READ(WEPCTL);
1209         reg &= ~ADM8211_WEPCTL_WEPENABLE;
1210         reg |= ADM8211_WEPCTL_WEPRXBYP;
1211         ADM8211_CSR_WRITE(WEPCTL, reg);
1212
1213         /* Clear the missed-packet counter. */
1214         ADM8211_CSR_READ(LPC);
1215 }
1216
1217 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1218 {
1219         struct adm8211_priv *priv = dev->priv;
1220         u32 reg, tmp;
1221         int timeout = 100;
1222
1223         /* Power-on issue */
1224         /* TODO: check if this is necessary */
1225         ADM8211_CSR_WRITE(FRCTL, 0);
1226
1227         /* Reset the chip */
1228         tmp = ADM8211_CSR_READ(PAR);
1229         ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1230
1231         while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1232                 msleep(50);
1233
1234         if (timeout <= 0)
1235                 return -ETIMEDOUT;
1236
1237         ADM8211_CSR_WRITE(PAR, tmp);
1238
1239         if (priv->pdev->revision == ADM8211_REV_BA &&
1240             (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1241              priv->transceiver_type == ADM8211_RFMD2958)) {
1242                 reg = ADM8211_CSR_READ(CSR_TEST1);
1243                 reg |= (1 << 4) | (1 << 5);
1244                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1245         } else if (priv->pdev->revision == ADM8211_REV_CA) {
1246                 reg = ADM8211_CSR_READ(CSR_TEST1);
1247                 reg &= ~((1 << 4) | (1 << 5));
1248                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1249         }
1250
1251         ADM8211_CSR_WRITE(FRCTL, 0);
1252
1253         reg = ADM8211_CSR_READ(CSR_TEST0);
1254         reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1255         ADM8211_CSR_WRITE(CSR_TEST0, reg);
1256
1257         adm8211_clear_sram(dev);
1258
1259         return 0;
1260 }
1261
1262 static u64 adm8211_get_tsft(struct ieee80211_hw *dev)
1263 {
1264         struct adm8211_priv *priv = dev->priv;
1265         u32 tsftl;
1266         u64 tsft;
1267
1268         tsftl = ADM8211_CSR_READ(TSFTL);
1269         tsft = ADM8211_CSR_READ(TSFTH);
1270         tsft <<= 32;
1271         tsft |= tsftl;
1272
1273         return tsft;
1274 }
1275
1276 static void adm8211_set_interval(struct ieee80211_hw *dev,
1277                                  unsigned short bi, unsigned short li)
1278 {
1279         struct adm8211_priv *priv = dev->priv;
1280         u32 reg;
1281
1282         /* BP (beacon interval) = data->beacon_interval
1283          * LI (listen interval) = data->listen_interval (in beacon intervals) */
1284         reg = (bi << 16) | li;
1285         ADM8211_CSR_WRITE(BPLI, reg);
1286 }
1287
1288 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1289 {
1290         struct adm8211_priv *priv = dev->priv;
1291         u32 reg;
1292
1293         ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1294         reg = ADM8211_CSR_READ(ABDA1);
1295         reg &= 0x0000ffff;
1296         reg |= (bssid[4] << 16) | (bssid[5] << 24);
1297         ADM8211_CSR_WRITE(ABDA1, reg);
1298 }
1299
1300 static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1301 {
1302         struct adm8211_priv *priv = dev->priv;
1303         struct ieee80211_conf *conf = &dev->conf;
1304         int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
1305
1306         if (channel != priv->channel) {
1307                 priv->channel = channel;
1308                 adm8211_rf_set_channel(dev, priv->channel);
1309         }
1310
1311         return 0;
1312 }
1313
1314 static int adm8211_config_interface(struct ieee80211_hw *dev,
1315                                     struct ieee80211_vif *vif,
1316                                     struct ieee80211_if_conf *conf)
1317 {
1318         struct adm8211_priv *priv = dev->priv;
1319
1320         if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1321                 adm8211_set_bssid(dev, conf->bssid);
1322                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1323         }
1324
1325         return 0;
1326 }
1327
1328 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1329                                      unsigned int changed_flags,
1330                                      unsigned int *total_flags,
1331                                      int mc_count, struct dev_mc_list *mclist)
1332 {
1333         static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1334         struct adm8211_priv *priv = dev->priv;
1335         unsigned int bit_nr, new_flags;
1336         u32 mc_filter[2];
1337         int i;
1338
1339         new_flags = 0;
1340
1341         if (*total_flags & FIF_PROMISC_IN_BSS) {
1342                 new_flags |= FIF_PROMISC_IN_BSS;
1343                 priv->nar |= ADM8211_NAR_PR;
1344                 priv->nar &= ~ADM8211_NAR_MM;
1345                 mc_filter[1] = mc_filter[0] = ~0;
1346         } else if ((*total_flags & FIF_ALLMULTI) || (mc_count > 32)) {
1347                 new_flags |= FIF_ALLMULTI;
1348                 priv->nar &= ~ADM8211_NAR_PR;
1349                 priv->nar |= ADM8211_NAR_MM;
1350                 mc_filter[1] = mc_filter[0] = ~0;
1351         } else {
1352                 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
1353                 mc_filter[1] = mc_filter[0] = 0;
1354                 for (i = 0; i < mc_count; i++) {
1355                         if (!mclist)
1356                                 break;
1357                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
1358
1359                         bit_nr &= 0x3F;
1360                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1361                         mclist = mclist->next;
1362                 }
1363         }
1364
1365         ADM8211_IDLE_RX();
1366
1367         ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
1368         ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
1369         ADM8211_CSR_READ(NAR);
1370
1371         if (priv->nar & ADM8211_NAR_PR)
1372                 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
1373         else
1374                 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
1375
1376         if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1377                 adm8211_set_bssid(dev, bcast);
1378         else
1379                 adm8211_set_bssid(dev, priv->bssid);
1380
1381         ADM8211_RESTORE();
1382
1383         *total_flags = new_flags;
1384 }
1385
1386 static int adm8211_add_interface(struct ieee80211_hw *dev,
1387                                  struct ieee80211_if_init_conf *conf)
1388 {
1389         struct adm8211_priv *priv = dev->priv;
1390         if (priv->mode != NL80211_IFTYPE_MONITOR)
1391                 return -EOPNOTSUPP;
1392
1393         switch (conf->type) {
1394         case NL80211_IFTYPE_STATION:
1395                 priv->mode = conf->type;
1396                 break;
1397         default:
1398                 return -EOPNOTSUPP;
1399         }
1400
1401         ADM8211_IDLE();
1402
1403         ADM8211_CSR_WRITE(PAR0, le32_to_cpu(*(__le32 *)conf->mac_addr));
1404         ADM8211_CSR_WRITE(PAR1, le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
1405
1406         adm8211_update_mode(dev);
1407
1408         ADM8211_RESTORE();
1409
1410         return 0;
1411 }
1412
1413 static void adm8211_remove_interface(struct ieee80211_hw *dev,
1414                                      struct ieee80211_if_init_conf *conf)
1415 {
1416         struct adm8211_priv *priv = dev->priv;
1417         priv->mode = NL80211_IFTYPE_MONITOR;
1418 }
1419
1420 static int adm8211_init_rings(struct ieee80211_hw *dev)
1421 {
1422         struct adm8211_priv *priv = dev->priv;
1423         struct adm8211_desc *desc = NULL;
1424         struct adm8211_rx_ring_info *rx_info;
1425         struct adm8211_tx_ring_info *tx_info;
1426         unsigned int i;
1427
1428         for (i = 0; i < priv->rx_ring_size; i++) {
1429                 desc = &priv->rx_ring[i];
1430                 desc->status = 0;
1431                 desc->length = cpu_to_le32(RX_PKT_SIZE);
1432                 priv->rx_buffers[i].skb = NULL;
1433         }
1434         /* Mark the end of RX ring; hw returns to base address after this
1435          * descriptor */
1436         desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1437
1438         for (i = 0; i < priv->rx_ring_size; i++) {
1439                 desc = &priv->rx_ring[i];
1440                 rx_info = &priv->rx_buffers[i];
1441
1442                 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1443                 if (rx_info->skb == NULL)
1444                         break;
1445                 rx_info->mapping = pci_map_single(priv->pdev,
1446                                                   skb_tail_pointer(rx_info->skb),
1447                                                   RX_PKT_SIZE,
1448                                                   PCI_DMA_FROMDEVICE);
1449                 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1450                 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1451         }
1452
1453         /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1454         for (i = 0; i < priv->tx_ring_size; i++) {
1455                 desc = &priv->tx_ring[i];
1456                 tx_info = &priv->tx_buffers[i];
1457
1458                 tx_info->skb = NULL;
1459                 tx_info->mapping = 0;
1460                 desc->status = 0;
1461         }
1462         desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1463
1464         priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1465         ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1466         ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1467
1468         return 0;
1469 }
1470
1471 static void adm8211_free_rings(struct ieee80211_hw *dev)
1472 {
1473         struct adm8211_priv *priv = dev->priv;
1474         unsigned int i;
1475
1476         for (i = 0; i < priv->rx_ring_size; i++) {
1477                 if (!priv->rx_buffers[i].skb)
1478                         continue;
1479
1480                 pci_unmap_single(
1481                         priv->pdev,
1482                         priv->rx_buffers[i].mapping,
1483                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1484
1485                 dev_kfree_skb(priv->rx_buffers[i].skb);
1486         }
1487
1488         for (i = 0; i < priv->tx_ring_size; i++) {
1489                 if (!priv->tx_buffers[i].skb)
1490                         continue;
1491
1492                 pci_unmap_single(priv->pdev,
1493                                  priv->tx_buffers[i].mapping,
1494                                  priv->tx_buffers[i].skb->len,
1495                                  PCI_DMA_TODEVICE);
1496
1497                 dev_kfree_skb(priv->tx_buffers[i].skb);
1498         }
1499 }
1500
1501 static int adm8211_start(struct ieee80211_hw *dev)
1502 {
1503         struct adm8211_priv *priv = dev->priv;
1504         int retval;
1505
1506         /* Power up MAC and RF chips */
1507         retval = adm8211_hw_reset(dev);
1508         if (retval) {
1509                 printk(KERN_ERR "%s: hardware reset failed\n",
1510                        wiphy_name(dev->wiphy));
1511                 goto fail;
1512         }
1513
1514         retval = adm8211_init_rings(dev);
1515         if (retval) {
1516                 printk(KERN_ERR "%s: failed to initialize rings\n",
1517                        wiphy_name(dev->wiphy));
1518                 goto fail;
1519         }
1520
1521         /* Init hardware */
1522         adm8211_hw_init(dev);
1523         adm8211_rf_set_channel(dev, priv->channel);
1524
1525         retval = request_irq(priv->pdev->irq, &adm8211_interrupt,
1526                              IRQF_SHARED, "adm8211", dev);
1527         if (retval) {
1528                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
1529                        wiphy_name(dev->wiphy));
1530                 goto fail;
1531         }
1532
1533         ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1534                                ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1535                                ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1536         priv->mode = NL80211_IFTYPE_MONITOR;
1537         adm8211_update_mode(dev);
1538         ADM8211_CSR_WRITE(RDR, 0);
1539
1540         adm8211_set_interval(dev, 100, 10);
1541         return 0;
1542
1543 fail:
1544         return retval;
1545 }
1546
1547 static void adm8211_stop(struct ieee80211_hw *dev)
1548 {
1549         struct adm8211_priv *priv = dev->priv;
1550
1551         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1552         priv->nar = 0;
1553         ADM8211_CSR_WRITE(NAR, 0);
1554         ADM8211_CSR_WRITE(IER, 0);
1555         ADM8211_CSR_READ(NAR);
1556
1557         free_irq(priv->pdev->irq, dev);
1558
1559         adm8211_free_rings(dev);
1560 }
1561
1562 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1563                                    int plcp_signal, int short_preamble)
1564 {
1565         /* Alternative calculation from NetBSD: */
1566
1567 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1568 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
1569 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1570 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
1571 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
1572 #define IEEE80211_DUR_DS_SLOW_ACK       112
1573 #define IEEE80211_DUR_DS_FAST_ACK       56
1574 #define IEEE80211_DUR_DS_SLOW_CTS       112
1575 #define IEEE80211_DUR_DS_FAST_CTS       56
1576 #define IEEE80211_DUR_DS_SLOT           20
1577 #define IEEE80211_DUR_DS_SIFS           10
1578
1579         int remainder;
1580
1581         *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1582                 / plcp_signal;
1583
1584         if (plcp_signal <= PLCP_SIGNAL_2M)
1585                 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1586                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1587                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1588                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1589                              IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1590         else
1591                 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1592                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1593                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1594                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1595                              IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1596
1597         /* lengthen duration if long preamble */
1598         if (!short_preamble)
1599                 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1600                              IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1601                         3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1602                              IEEE80211_DUR_DS_FAST_PLCPHDR);
1603
1604
1605         *plcp = (80 * len) / plcp_signal;
1606         remainder = (80 * len) % plcp_signal;
1607         if (plcp_signal == PLCP_SIGNAL_11M &&
1608             remainder <= 30 && remainder > 0)
1609                 *plcp = (*plcp | 0x8000) + 1;
1610         else if (remainder)
1611                 (*plcp)++;
1612 }
1613
1614 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1615 static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1616                            u16 plcp_signal,
1617                            size_t hdrlen)
1618 {
1619         struct adm8211_priv *priv = dev->priv;
1620         unsigned long flags;
1621         dma_addr_t mapping;
1622         unsigned int entry;
1623         u32 flag;
1624
1625         mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1626                                  PCI_DMA_TODEVICE);
1627
1628         spin_lock_irqsave(&priv->lock, flags);
1629
1630         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1631                 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1632         else
1633                 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1634
1635         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1636                 ieee80211_stop_queue(dev, 0);
1637
1638         entry = priv->cur_tx % priv->tx_ring_size;
1639
1640         priv->tx_buffers[entry].skb = skb;
1641         priv->tx_buffers[entry].mapping = mapping;
1642         priv->tx_buffers[entry].hdrlen = hdrlen;
1643         priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1644
1645         if (entry == priv->tx_ring_size - 1)
1646                 flag |= TDES1_CONTROL_TER;
1647         priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1648
1649         /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1650         flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1651         priv->tx_ring[entry].status = cpu_to_le32(flag);
1652
1653         priv->cur_tx++;
1654
1655         spin_unlock_irqrestore(&priv->lock, flags);
1656
1657         /* Trigger transmit poll */
1658         ADM8211_CSR_WRITE(TDR, 0);
1659 }
1660
1661 /* Put adm8211_tx_hdr on skb and transmit */
1662 static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1663 {
1664         struct adm8211_tx_hdr *txhdr;
1665         size_t payload_len, hdrlen;
1666         int plcp, dur, len, plcp_signal, short_preamble;
1667         struct ieee80211_hdr *hdr;
1668         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1669         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1670         u8 rc_flags;
1671
1672         rc_flags = info->control.rates[0].flags;
1673         short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1674         plcp_signal = txrate->bitrate;
1675
1676         hdr = (struct ieee80211_hdr *)skb->data;
1677         hdrlen = ieee80211_hdrlen(hdr->frame_control);
1678         memcpy(skb->cb, skb->data, hdrlen);
1679         hdr = (struct ieee80211_hdr *)skb->cb;
1680         skb_pull(skb, hdrlen);
1681         payload_len = skb->len;
1682
1683         txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
1684         memset(txhdr, 0, sizeof(*txhdr));
1685         memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1686         txhdr->signal = plcp_signal;
1687         txhdr->frame_body_size = cpu_to_le16(payload_len);
1688         txhdr->frame_control = hdr->frame_control;
1689
1690         len = hdrlen + payload_len + FCS_LEN;
1691
1692         txhdr->frag = cpu_to_le16(0x0FFF);
1693         adm8211_calc_durations(&dur, &plcp, payload_len,
1694                                len, plcp_signal, short_preamble);
1695         txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1696         txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1697         txhdr->dur_frag_head = cpu_to_le16(dur);
1698         txhdr->dur_frag_tail = cpu_to_le16(dur);
1699
1700         txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1701
1702         if (short_preamble)
1703                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1704
1705         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1706                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1707
1708         txhdr->retry_limit = info->control.rates[0].count;
1709
1710         adm8211_tx_raw(dev, skb, plcp_signal, hdrlen);
1711
1712         return NETDEV_TX_OK;
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         .config_interface       = adm8211_config_interface,
1757         .configure_filter       = adm8211_configure_filter,
1758         .get_stats              = adm8211_get_stats,
1759         .get_tx_stats           = adm8211_get_tx_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_32BIT_MASK) ||
1808             pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
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_desc;
1904         }
1905
1906         printk(KERN_INFO "%s: hwaddr %pM, Rev 0x%02x\n",
1907                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1908                pdev->revision);
1909
1910         return 0;
1911
1912  err_free_desc:
1913         pci_free_consistent(pdev,
1914                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1915                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1916                             priv->rx_ring, priv->rx_ring_dma);
1917         kfree(priv->rx_buffers);
1918
1919  err_iounmap:
1920         pci_iounmap(pdev, priv->map);
1921
1922  err_free_dev:
1923         pci_set_drvdata(pdev, NULL);
1924         ieee80211_free_hw(dev);
1925
1926  err_free_reg:
1927         pci_release_regions(pdev);
1928
1929  err_disable_pdev:
1930         pci_disable_device(pdev);
1931         return err;
1932 }
1933
1934
1935 static void __devexit adm8211_remove(struct pci_dev *pdev)
1936 {
1937         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1938         struct adm8211_priv *priv;
1939
1940         if (!dev)
1941                 return;
1942
1943         ieee80211_unregister_hw(dev);
1944
1945         priv = dev->priv;
1946
1947         pci_free_consistent(pdev,
1948                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1949                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1950                             priv->rx_ring, priv->rx_ring_dma);
1951
1952         kfree(priv->rx_buffers);
1953         kfree(priv->eeprom);
1954         pci_iounmap(pdev, priv->map);
1955         pci_release_regions(pdev);
1956         pci_disable_device(pdev);
1957         ieee80211_free_hw(dev);
1958 }
1959
1960
1961 #ifdef CONFIG_PM
1962 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1963 {
1964         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1965         struct adm8211_priv *priv = dev->priv;
1966
1967         if (priv->mode != NL80211_IFTYPE_UNSPECIFIED) {
1968                 ieee80211_stop_queues(dev);
1969                 adm8211_stop(dev);
1970         }
1971
1972         pci_save_state(pdev);
1973         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1974         return 0;
1975 }
1976
1977 static int adm8211_resume(struct pci_dev *pdev)
1978 {
1979         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1980         struct adm8211_priv *priv = dev->priv;
1981
1982         pci_set_power_state(pdev, PCI_D0);
1983         pci_restore_state(pdev);
1984
1985         if (priv->mode != NL80211_IFTYPE_UNSPECIFIED) {
1986                 adm8211_start(dev);
1987                 ieee80211_wake_queues(dev);
1988         }
1989
1990         return 0;
1991 }
1992 #endif /* CONFIG_PM */
1993
1994
1995 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1996
1997 /* TODO: implement enable_wake */
1998 static struct pci_driver adm8211_driver = {
1999         .name           = "adm8211",
2000         .id_table       = adm8211_pci_id_table,
2001         .probe          = adm8211_probe,
2002         .remove         = __devexit_p(adm8211_remove),
2003 #ifdef CONFIG_PM
2004         .suspend        = adm8211_suspend,
2005         .resume         = adm8211_resume,
2006 #endif /* CONFIG_PM */
2007 };
2008
2009
2010
2011 static int __init adm8211_init(void)
2012 {
2013         return pci_register_driver(&adm8211_driver);
2014 }
2015
2016
2017 static void __exit adm8211_exit(void)
2018 {
2019         pci_unregister_driver(&adm8211_driver);
2020 }
2021
2022
2023 module_init(adm8211_init);
2024 module_exit(adm8211_exit);