drivers/net/wireless/admtek/adm8211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2
   3 /*
   4  * Linux device driver for ADMtek ADM8211 (IEEE 802.11b MAC/BBP)
   5  *
   6  * Copyright (c) 2003, Jouni Malinen <[email protected]>
   7  * Copyright (c) 2004-2007, Michael Wu <[email protected]>
   8  * Some parts copyright (c) 2003 by David Young <[email protected]>
   9  * and used with permission.
  10  *
  11  * Much thanks to Infineon-ADMtek for their support of this driver.
  12  */
  13
  14 #include <linux/interrupt.h>
  15 #include <linux/if.h>
  16 #include <linux/skbuff.h>
  17 #include <linux/slab.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/crc32.h>
  22 #include <linux/eeprom_93cx6.h>
  23 #include <linux/module.h>
  24 #include <net/mac80211.h>
  25
  26 #include "adm8211.h"
  27
  28 MODULE_AUTHOR("Michael Wu <[email protected]>");
  29 MODULE_AUTHOR("Jouni Malinen <[email protected]>");
  30 MODULE_DESCRIPTION("Driver for IEEE 802.11b wireless cards based on ADMtek ADM8211");
  31 MODULE_LICENSE("GPL");
  32
  33 static unsigned int tx_ring_size __read_mostly = 16;
  34 static unsigned int rx_ring_size __read_mostly = 16;
  35
  36 module_param(tx_ring_size, uint, 0);
  37 module_param(rx_ring_size, uint, 0);
  38
  39 static const struct pci_device_id adm8211_pci_id_table[] = {
  40         /* ADMtek ADM8211 */
  41         { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
  42         { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
  43         { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
  44         { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
  45         { 0 }
  46 };
  47
  48 static struct ieee80211_rate adm8211_rates[] = {
  49         { .bitrate = 10, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  50         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  51         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  52         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  53         { .bitrate = 220, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, /* XX ?? */
  54 };
  55
  56 static const struct ieee80211_channel adm8211_channels[] = {
  57         { .center_freq = 2412},
  58         { .center_freq = 2417},
  59         { .center_freq = 2422},
  60         { .center_freq = 2427},
  61         { .center_freq = 2432},
  62         { .center_freq = 2437},
  63         { .center_freq = 2442},
  64         { .center_freq = 2447},
  65         { .center_freq = 2452},
  66         { .center_freq = 2457},
  67         { .center_freq = 2462},
  68         { .center_freq = 2467},
  69         { .center_freq = 2472},
  70         { .center_freq = 2484},
  71 };
  72
  73
  74 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
  75 {
  76         struct adm8211_priv *priv = eeprom->data;
  77         u32 reg = ADM8211_CSR_READ(SPR);
  78
  79         eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
  80         eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
  81         eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
  82         eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
  83 }
  84
  85 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
  86 {
  87         struct adm8211_priv *priv = eeprom->data;
  88         u32 reg = 0x4000 | ADM8211_SPR_SRS;
  89
  90         if (eeprom->reg_data_in)
  91                 reg |= ADM8211_SPR_SDI;
  92         if (eeprom->reg_data_out)
  93                 reg |= ADM8211_SPR_SDO;
  94         if (eeprom->reg_data_clock)
  95                 reg |= ADM8211_SPR_SCLK;
  96         if (eeprom->reg_chip_select)
  97                 reg |= ADM8211_SPR_SCS;
  98
  99         ADM8211_CSR_WRITE(SPR, reg);
 100         ADM8211_CSR_READ(SPR);          /* eeprom_delay */
 101 }
 102
 103 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
 104 {
 105         struct adm8211_priv *priv = dev->priv;
 106         unsigned int words, i;
 107         struct ieee80211_chan_range chan_range;
 108         u16 cr49;
 109         struct eeprom_93cx6 eeprom = {
 110                 .data           = priv,
 111                 .register_read  = adm8211_eeprom_register_read,
 112                 .register_write = adm8211_eeprom_register_write
 113         };
 114
 115         if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
 116                 /* 256 * 16-bit = 512 bytes */
 117                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 118                 words = 256;
 119         } else {
 120                 /* 64 * 16-bit = 128 bytes */
 121                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 122                 words = 64;
 123         }
 124
 125         priv->eeprom_len = words * 2;
 126         priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
 127         if (!priv->eeprom)
 128                 return -ENOMEM;
 129
 130         eeprom_93cx6_multiread(&eeprom, 0, (__le16 *)priv->eeprom, words);
 131
 132         cr49 = le16_to_cpu(priv->eeprom->cr49);
 133         priv->rf_type = (cr49 >> 3) & 0x7;
 134         switch (priv->rf_type) {
 135         case ADM8211_TYPE_INTERSIL:
 136         case ADM8211_TYPE_RFMD:
 137         case ADM8211_TYPE_MARVEL:
 138         case ADM8211_TYPE_AIROHA:
 139         case ADM8211_TYPE_ADMTEK:
 140                 break;
 141
 142         default:
 143                 if (priv->pdev->revision < ADM8211_REV_CA)
 144                         priv->rf_type = ADM8211_TYPE_RFMD;
 145                 else
 146                         priv->rf_type = ADM8211_TYPE_AIROHA;
 147
 148                 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
 149                        pci_name(priv->pdev), (cr49 >> 3) & 0x7);
 150         }
 151
 152         priv->bbp_type = cr49 & 0x7;
 153         switch (priv->bbp_type) {
 154         case ADM8211_TYPE_INTERSIL:
 155         case ADM8211_TYPE_RFMD:
 156         case ADM8211_TYPE_MARVEL:
 157         case ADM8211_TYPE_AIROHA:
 158         case ADM8211_TYPE_ADMTEK:
 159                 break;
 160         default:
 161                 if (priv->pdev->revision < ADM8211_REV_CA)
 162                         priv->bbp_type = ADM8211_TYPE_RFMD;
 163                 else
 164                         priv->bbp_type = ADM8211_TYPE_ADMTEK;
 165
 166                 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
 167                        pci_name(priv->pdev), cr49 >> 3);
 168         }
 169
 170         if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
 171                 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
 172                        pci_name(priv->pdev), priv->eeprom->country_code);
 173
 174                 chan_range = cranges[2];
 175         } else
 176                 chan_range = cranges[priv->eeprom->country_code];
 177
 178         printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
 179                pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
 180
 181         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(adm8211_channels));
 182
 183         memcpy(priv->channels, adm8211_channels, sizeof(priv->channels));
 184         priv->band.channels = priv->channels;
 185         priv->band.n_channels = ARRAY_SIZE(adm8211_channels);
 186         priv->band.bitrates = adm8211_rates;
 187         priv->band.n_bitrates = ARRAY_SIZE(adm8211_rates);
 188
 189         for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
 190                 if (i < chan_range.min || i > chan_range.max)
 191                         priv->channels[i - 1].flags |= IEEE80211_CHAN_DISABLED;
 192
 193         switch (priv->eeprom->specific_bbptype) {
 194         case ADM8211_BBP_RFMD3000:
 195         case ADM8211_BBP_RFMD3002:
 196         case ADM8211_BBP_ADM8011:
 197                 priv->specific_bbptype = priv->eeprom->specific_bbptype;
 198                 break;
 199
 200         default:
 201                 if (priv->pdev->revision < ADM8211_REV_CA)
 202                         priv->specific_bbptype = ADM8211_BBP_RFMD3000;
 203                 else
 204                         priv->specific_bbptype = ADM8211_BBP_ADM8011;
 205
 206                 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
 207                        pci_name(priv->pdev), priv->eeprom->specific_bbptype);
 208         }
 209
 210         switch (priv->eeprom->specific_rftype) {
 211         case ADM8211_RFMD2948:
 212         case ADM8211_RFMD2958:
 213         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 214         case ADM8211_MAX2820:
 215         case ADM8211_AL2210L:
 216                 priv->transceiver_type = priv->eeprom->specific_rftype;
 217                 break;
 218
 219         default:
 220                 if (priv->pdev->revision == ADM8211_REV_BA)
 221                         priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
 222                 else if (priv->pdev->revision == ADM8211_REV_CA)
 223                         priv->transceiver_type = ADM8211_AL2210L;
 224                 else if (priv->pdev->revision == ADM8211_REV_AB)
 225                         priv->transceiver_type = ADM8211_RFMD2948;
 226
 227                 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
 228                        pci_name(priv->pdev), priv->eeprom->specific_rftype);
 229
 230                 break;
 231         }
 232
 233         printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
 234                "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
 235                priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
 236
 237         return 0;
 238 }
 239
 240 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
 241                                       u32 addr, u32 data)
 242 {
 243         struct adm8211_priv *priv = dev->priv;
 244
 245         ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
 246                           (priv->pdev->revision < ADM8211_REV_BA ?
 247                            0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
 248         ADM8211_CSR_READ(WEPCTL);
 249         msleep(1);
 250
 251         ADM8211_CSR_WRITE(WESK, data);
 252         ADM8211_CSR_READ(WESK);
 253         msleep(1);
 254 }
 255
 256 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
 257                                      unsigned int addr, u8 *buf,
 258                                      unsigned int len)
 259 {
 260         struct adm8211_priv *priv = dev->priv;
 261         u32 reg = ADM8211_CSR_READ(WEPCTL);
 262         unsigned int i;
 263
 264         if (priv->pdev->revision < ADM8211_REV_BA) {
 265                 for (i = 0; i < len; i += 2) {
 266                         u16 val = buf[i] | (buf[i + 1] << 8);
 267                         adm8211_write_sram(dev, addr + i / 2, val);
 268                 }
 269         } else {
 270                 for (i = 0; i < len; i += 4) {
 271                         u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
 272                                   (buf[i + 2] << 16) | (buf[i + 3] << 24);
 273                         adm8211_write_sram(dev, addr + i / 4, val);
 274                 }
 275         }
 276
 277         ADM8211_CSR_WRITE(WEPCTL, reg);
 278 }
 279
 280 static void adm8211_clear_sram(struct ieee80211_hw *dev)
 281 {
 282         struct adm8211_priv *priv = dev->priv;
 283         u32 reg = ADM8211_CSR_READ(WEPCTL);
 284         unsigned int addr;
 285
 286         for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
 287                 adm8211_write_sram(dev, addr, 0);
 288
 289         ADM8211_CSR_WRITE(WEPCTL, reg);
 290 }
 291
 292 static int adm8211_get_stats(struct ieee80211_hw *dev,
 293                              struct ieee80211_low_level_stats *stats)
 294 {
 295         struct adm8211_priv *priv = dev->priv;
 296
 297         memcpy(stats, &priv->stats, sizeof(*stats));
 298
 299         return 0;
 300 }
 301
 302 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
 303 {
 304         struct adm8211_priv *priv = dev->priv;
 305         unsigned int dirty_tx;
 306
 307         spin_lock(&priv->lock);
 308
 309         for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
 310                 unsigned int entry = dirty_tx % priv->tx_ring_size;
 311                 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
 312                 struct ieee80211_tx_info *txi;
 313                 struct adm8211_tx_ring_info *info;
 314                 struct sk_buff *skb;
 315
 316                 if (status & TDES0_CONTROL_OWN ||
 317                     !(status & TDES0_CONTROL_DONE))
 318                         break;
 319
 320                 info = &priv->tx_buffers[entry];
 321                 skb = info->skb;
 322                 txi = IEEE80211_SKB_CB(skb);
 323
 324                 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
 325
 326                 dma_unmap_single(&priv->pdev->dev, info->mapping,
 327                                  info->skb->len, DMA_TO_DEVICE);
 328
 329                 ieee80211_tx_info_clear_status(txi);
 330
 331                 skb_pull(skb, sizeof(struct adm8211_tx_hdr));
 332                 memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen);
 333                 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) &&
 334                     !(status & TDES0_STATUS_ES))
 335                         txi->flags |= IEEE80211_TX_STAT_ACK;
 336
 337                 ieee80211_tx_status_irqsafe(dev, skb);
 338
 339                 info->skb = NULL;
 340         }
 341
 342         if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
 343                 ieee80211_wake_queue(dev, 0);
 344
 345         priv->dirty_tx = dirty_tx;
 346         spin_unlock(&priv->lock);
 347 }
 348
 349
 350 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
 351 {
 352         struct adm8211_priv *priv = dev->priv;
 353         unsigned int entry = priv->cur_rx % priv->rx_ring_size;
 354         u32 status;
 355         unsigned int pktlen;
 356         struct sk_buff *skb, *newskb;
 357         unsigned int limit = priv->rx_ring_size;
 358         u8 rssi, rate;
 359
 360         while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
 361                 if (!limit--)
 362                         break;
 363
 364                 status = le32_to_cpu(priv->rx_ring[entry].status);
 365                 rate = (status & RDES0_STATUS_RXDR) >> 12;
 366                 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
 367                         RDES1_STATUS_RSSI;
 368
 369                 pktlen = status & RDES0_STATUS_FL;
 370                 if (pktlen > RX_PKT_SIZE) {
 371                         if (net_ratelimit())
 372                                 wiphy_debug(dev->wiphy, "frame too long (%d)\n",
 373                                             pktlen);
 374                         pktlen = RX_PKT_SIZE;
 375                 }
 376
 377                 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
 378                         skb = NULL; /* old buffer will be reused */
 379                         /* TODO: update RX error stats */
 380                         /* TODO: check RDES0_STATUS_CRC*E */
 381                 } else if (pktlen < RX_COPY_BREAK) {
 382                         skb = dev_alloc_skb(pktlen);
 383                         if (skb) {
 384                                 dma_sync_single_for_cpu(&priv->pdev->dev,
 385                                                         priv->rx_buffers[entry].mapping,
 386                                                         pktlen,
 387                                                         DMA_FROM_DEVICE);
 388                                 skb_put_data(skb,
 389                                              skb_tail_pointer(priv->rx_buffers[entry].skb),
 390                                              pktlen);
 391                                 dma_sync_single_for_device(&priv->pdev->dev,
 392                                                            priv->rx_buffers[entry].mapping,
 393                                                            RX_PKT_SIZE,
 394                                                            DMA_FROM_DEVICE);
 395                         }
 396                 } else {
 397                         newskb = dev_alloc_skb(RX_PKT_SIZE);
 398                         if (newskb) {
 399                                 skb = priv->rx_buffers[entry].skb;
 400                                 skb_put(skb, pktlen);
 401                                 dma_unmap_single(&priv->pdev->dev,
 402                                                  priv->rx_buffers[entry].mapping,
 403                                                  RX_PKT_SIZE, DMA_FROM_DEVICE);
 404                                 priv->rx_buffers[entry].skb = newskb;
 405                                 priv->rx_buffers[entry].mapping =
 406                                         dma_map_single(&priv->pdev->dev,
 407                                                        skb_tail_pointer(newskb),
 408                                                        RX_PKT_SIZE,
 409                                                        DMA_FROM_DEVICE);
 410                                 if (dma_mapping_error(&priv->pdev->dev,
 411                                                       priv->rx_buffers[entry].mapping)) {
 412                                         priv->rx_buffers[entry].skb = NULL;
 413                                         dev_kfree_skb(newskb);
 414                                         skb = NULL;
 415                                         /* TODO: update rx dropped stats */
 416                                 }
 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 = NL80211_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:
1103                         reg |= (0x1 << 14);
1104                         break;
1105                 case 0x10:
1106                         reg |= (0x2 << 14);
1107                         break;
1108                 case 0x20:
1109                         reg |= (0x3 << 14);
1110                         break;
1111                 default:
1112                         reg |= (0x0 << 14);
1113                         break;
1114                 }
1115         }
1116
1117         ADM8211_CSR_WRITE(PAR, reg);
1118
1119         reg = ADM8211_CSR_READ(CSR_TEST1);
1120         reg &= ~(0xF << 28);
1121         reg |= (1 << 28) | (1 << 31);
1122         ADM8211_CSR_WRITE(CSR_TEST1, reg);
1123
1124         /* lose link after 4 lost beacons */
1125         reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1126         ADM8211_CSR_WRITE(WCSR, reg);
1127
1128         /* Disable APM, enable receive FIFO threshold, and set drain receive
1129          * threshold to store-and-forward */
1130         reg = ADM8211_CSR_READ(CMDR);
1131         reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1132         reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1133         ADM8211_CSR_WRITE(CMDR, reg);
1134
1135         adm8211_set_rate(dev);
1136
1137         /* 4-bit values:
1138          * PWR1UP   = 8 * 2 ms
1139          * PWR0PAPE = 8 us or 5 us
1140          * PWR1PAPE = 1 us or 3 us
1141          * PWR0TRSW = 5 us
1142          * PWR1TRSW = 12 us
1143          * PWR0PE2  = 13 us
1144          * PWR1PE2  = 1 us
1145          * PWR0TXPE = 8 or 6 */
1146         if (priv->pdev->revision < ADM8211_REV_CA)
1147                 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1148         else
1149                 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1150
1151         /* Enable store and forward for transmit */
1152         priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1153         ADM8211_CSR_WRITE(NAR, priv->nar);
1154
1155         /* Reset RF */
1156         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1157         ADM8211_CSR_READ(SYNRF);
1158         msleep(10);
1159         ADM8211_CSR_WRITE(SYNRF, 0);
1160         ADM8211_CSR_READ(SYNRF);
1161         msleep(5);
1162
1163         /* Set CFP Max Duration to 0x10 TU */
1164         reg = ADM8211_CSR_READ(CFPP);
1165         reg &= ~(0xffff << 8);
1166         reg |= 0x0010 << 8;
1167         ADM8211_CSR_WRITE(CFPP, reg);
1168
1169         /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1170          * TUCNT = 0x3ff - Tu counter 1024 us  */
1171         ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1172
1173         /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1174          * DIFS=50 us, EIFS=100 us */
1175         if (priv->pdev->revision < ADM8211_REV_CA)
1176                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1177                                         (50 << 9)  | 100);
1178         else
1179                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1180                                         (50 << 9)  | 100);
1181
1182         /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1183          * RMRD = 2346 * 8 + 1 us (max RX duration)  */
1184         ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1185
1186         /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1187         ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1188
1189         /* Initialize BBP (and SYN) */
1190         adm8211_hw_init_bbp(dev);
1191
1192         /* make sure interrupts are off */
1193         ADM8211_CSR_WRITE(IER, 0);
1194
1195         /* ACK interrupts */
1196         ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1197
1198         /* Setup WEP (turns it off for now) */
1199         reg = ADM8211_CSR_READ(MACTEST);
1200         reg &= ~(7 << 20);
1201         ADM8211_CSR_WRITE(MACTEST, reg);
1202
1203         reg = ADM8211_CSR_READ(WEPCTL);
1204         reg &= ~ADM8211_WEPCTL_WEPENABLE;
1205         reg |= ADM8211_WEPCTL_WEPRXBYP;
1206         ADM8211_CSR_WRITE(WEPCTL, reg);
1207
1208         /* Clear the missed-packet counter. */
1209         ADM8211_CSR_READ(LPC);
1210 }
1211
1212 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1213 {
1214         struct adm8211_priv *priv = dev->priv;
1215         u32 reg, tmp;
1216         int timeout = 100;
1217
1218         /* Power-on issue */
1219         /* TODO: check if this is necessary */
1220         ADM8211_CSR_WRITE(FRCTL, 0);
1221
1222         /* Reset the chip */
1223         tmp = ADM8211_CSR_READ(PAR);
1224         ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1225
1226         while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1227                 msleep(50);
1228
1229         if (timeout <= 0)
1230                 return -ETIMEDOUT;
1231
1232         ADM8211_CSR_WRITE(PAR, tmp);
1233
1234         if (priv->pdev->revision == ADM8211_REV_BA &&
1235             (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1236              priv->transceiver_type == ADM8211_RFMD2958)) {
1237                 reg = ADM8211_CSR_READ(CSR_TEST1);
1238                 reg |= (1 << 4) | (1 << 5);
1239                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1240         } else if (priv->pdev->revision == ADM8211_REV_CA) {
1241                 reg = ADM8211_CSR_READ(CSR_TEST1);
1242                 reg &= ~((1 << 4) | (1 << 5));
1243                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1244         }
1245
1246         ADM8211_CSR_WRITE(FRCTL, 0);
1247
1248         reg = ADM8211_CSR_READ(CSR_TEST0);
1249         reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1250         ADM8211_CSR_WRITE(CSR_TEST0, reg);
1251
1252         adm8211_clear_sram(dev);
1253
1254         return 0;
1255 }
1256
1257 static u64 adm8211_get_tsft(struct ieee80211_hw *dev,
1258                             struct ieee80211_vif *vif)
1259 {
1260         struct adm8211_priv *priv = dev->priv;
1261         u32 tsftl;
1262         u64 tsft;
1263
1264         tsftl = ADM8211_CSR_READ(TSFTL);
1265         tsft = ADM8211_CSR_READ(TSFTH);
1266         tsft <<= 32;
1267         tsft |= tsftl;
1268
1269         return tsft;
1270 }
1271
1272 static void adm8211_set_interval(struct ieee80211_hw *dev,
1273                                  unsigned short bi, unsigned short li)
1274 {
1275         struct adm8211_priv *priv = dev->priv;
1276         u32 reg;
1277
1278         /* BP (beacon interval) = data->beacon_interval
1279          * LI (listen interval) = data->listen_interval (in beacon intervals) */
1280         reg = (bi << 16) | li;
1281         ADM8211_CSR_WRITE(BPLI, reg);
1282 }
1283
1284 static void adm8211_set_bssid(struct ieee80211_hw *dev, const u8 *bssid)
1285 {
1286         struct adm8211_priv *priv = dev->priv;
1287         u32 reg;
1288
1289         ADM8211_CSR_WRITE(BSSID0, le32_to_cpu(*(__le32 *)bssid));
1290         reg = ADM8211_CSR_READ(ABDA1);
1291         reg &= 0x0000ffff;
1292         reg |= (bssid[4] << 16) | (bssid[5] << 24);
1293         ADM8211_CSR_WRITE(ABDA1, reg);
1294 }
1295
1296 static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
1297 {
1298         struct adm8211_priv *priv = dev->priv;
1299         struct ieee80211_conf *conf = &dev->conf;
1300         int channel =
1301                 ieee80211_frequency_to_channel(conf->chandef.chan->center_freq);
1302
1303         if (channel != priv->channel) {
1304                 priv->channel = channel;
1305                 adm8211_rf_set_channel(dev, priv->channel);
1306         }
1307
1308         return 0;
1309 }
1310
1311 static void adm8211_bss_info_changed(struct ieee80211_hw *dev,
1312                                      struct ieee80211_vif *vif,
1313                                      struct ieee80211_bss_conf *conf,
1314                                      u32 changes)
1315 {
1316         struct adm8211_priv *priv = dev->priv;
1317
1318         if (!(changes & BSS_CHANGED_BSSID))
1319                 return;
1320
1321         if (!ether_addr_equal(conf->bssid, priv->bssid)) {
1322                 adm8211_set_bssid(dev, conf->bssid);
1323                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1324         }
1325 }
1326
1327 static u64 adm8211_prepare_multicast(struct ieee80211_hw *hw,
1328                                      struct netdev_hw_addr_list *mc_list)
1329 {
1330         unsigned int bit_nr;
1331         u32 mc_filter[2];
1332         struct netdev_hw_addr *ha;
1333
1334         mc_filter[1] = mc_filter[0] = 0;
1335
1336         netdev_hw_addr_list_for_each(ha, mc_list) {
1337                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
1338
1339                 bit_nr &= 0x3F;
1340                 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
1341         }
1342
1343         return mc_filter[0] | ((u64)(mc_filter[1]) << 32);
1344 }
1345
1346 static void adm8211_configure_filter(struct ieee80211_hw *dev,
1347                                      unsigned int changed_flags,
1348                                      unsigned int *total_flags,
1349                                      u64 multicast)
1350 {
1351         static const u8 bcast[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
1352         struct adm8211_priv *priv = dev->priv;
1353         unsigned int new_flags;
1354         u32 mc_filter[2];
1355
1356         mc_filter[0] = multicast;
1357         mc_filter[1] = multicast >> 32;
1358
1359         new_flags = 0;
1360
1361         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                 ieee80211_hw_set(dev, RX_INCLUDES_FCS);
1378         else
1379                 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, dev->flags);
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 = dma_map_single(&priv->pdev->dev,
1451                                                   skb_tail_pointer(rx_info->skb),
1452                                                   RX_PKT_SIZE,
1453                                                   DMA_FROM_DEVICE);
1454                 if (dma_mapping_error(&priv->pdev->dev, rx_info->mapping)) {
1455                         dev_kfree_skb(rx_info->skb);
1456                         rx_info->skb = NULL;
1457                         break;
1458                 }
1459
1460                 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1461                 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1462         }
1463
1464         /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1465         for (i = 0; i < priv->tx_ring_size; i++) {
1466                 desc = &priv->tx_ring[i];
1467                 tx_info = &priv->tx_buffers[i];
1468
1469                 tx_info->skb = NULL;
1470                 tx_info->mapping = 0;
1471                 desc->status = 0;
1472         }
1473         desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1474
1475         priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1476         ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1477         ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1478
1479         return 0;
1480 }
1481
1482 static void adm8211_free_rings(struct ieee80211_hw *dev)
1483 {
1484         struct adm8211_priv *priv = dev->priv;
1485         unsigned int i;
1486
1487         for (i = 0; i < priv->rx_ring_size; i++) {
1488                 if (!priv->rx_buffers[i].skb)
1489                         continue;
1490
1491                 dma_unmap_single(&priv->pdev->dev,
1492                                  priv->rx_buffers[i].mapping, RX_PKT_SIZE,
1493                                  DMA_FROM_DEVICE);
1494
1495                 dev_kfree_skb(priv->rx_buffers[i].skb);
1496         }
1497
1498         for (i = 0; i < priv->tx_ring_size; i++) {
1499                 if (!priv->tx_buffers[i].skb)
1500                         continue;
1501
1502                 dma_unmap_single(&priv->pdev->dev,
1503                                  priv->tx_buffers[i].mapping,
1504                                  priv->tx_buffers[i].skb->len, DMA_TO_DEVICE);
1505
1506                 dev_kfree_skb(priv->tx_buffers[i].skb);
1507         }
1508 }
1509
1510 static int adm8211_start(struct ieee80211_hw *dev)
1511 {
1512         struct adm8211_priv *priv = dev->priv;
1513         int retval;
1514
1515         /* Power up MAC and RF chips */
1516         retval = adm8211_hw_reset(dev);
1517         if (retval) {
1518                 wiphy_err(dev->wiphy, "hardware reset failed\n");
1519                 goto fail;
1520         }
1521
1522         retval = adm8211_init_rings(dev);
1523         if (retval) {
1524                 wiphy_err(dev->wiphy, "failed to initialize rings\n");
1525                 goto fail;
1526         }
1527
1528         /* Init hardware */
1529         adm8211_hw_init(dev);
1530         adm8211_rf_set_channel(dev, priv->channel);
1531
1532         retval = request_irq(priv->pdev->irq, adm8211_interrupt,
1533                              IRQF_SHARED, "adm8211", dev);
1534         if (retval) {
1535                 wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
1536                 goto fail;
1537         }
1538
1539         ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1540                                ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1541                                ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
1542         priv->mode = NL80211_IFTYPE_MONITOR;
1543         adm8211_update_mode(dev);
1544         ADM8211_CSR_WRITE(RDR, 0);
1545
1546         adm8211_set_interval(dev, 100, 10);
1547         return 0;
1548
1549 fail:
1550         return retval;
1551 }
1552
1553 static void adm8211_stop(struct ieee80211_hw *dev)
1554 {
1555         struct adm8211_priv *priv = dev->priv;
1556
1557         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1558         priv->nar = 0;
1559         ADM8211_CSR_WRITE(NAR, 0);
1560         ADM8211_CSR_WRITE(IER, 0);
1561         ADM8211_CSR_READ(NAR);
1562
1563         free_irq(priv->pdev->irq, dev);
1564
1565         adm8211_free_rings(dev);
1566 }
1567
1568 static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int len,
1569                                    int plcp_signal, int short_preamble)
1570 {
1571         /* Alternative calculation from NetBSD: */
1572
1573 /* IEEE 802.11b durations for DSSS PHY in microseconds */
1574 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
1575 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
1576 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
1577 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
1578 #define IEEE80211_DUR_DS_SLOW_ACK       112
1579 #define IEEE80211_DUR_DS_FAST_ACK       56
1580 #define IEEE80211_DUR_DS_SLOW_CTS       112
1581 #define IEEE80211_DUR_DS_FAST_CTS       56
1582 #define IEEE80211_DUR_DS_SLOT           20
1583 #define IEEE80211_DUR_DS_SIFS           10
1584
1585         int remainder;
1586
1587         *dur = (80 * (24 + payload_len) + plcp_signal - 1)
1588                 / plcp_signal;
1589
1590         if (plcp_signal <= PLCP_SIGNAL_2M)
1591                 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */
1592                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1593                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1594                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1595                              IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK;
1596         else
1597                 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */
1598                 *dur += 3 * (IEEE80211_DUR_DS_SIFS +
1599                              IEEE80211_DUR_DS_SHORT_PREAMBLE +
1600                              IEEE80211_DUR_DS_FAST_PLCPHDR) +
1601                              IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK;
1602
1603         /* lengthen duration if long preamble */
1604         if (!short_preamble)
1605                 *dur += 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE -
1606                              IEEE80211_DUR_DS_SHORT_PREAMBLE) +
1607                         3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR -
1608                              IEEE80211_DUR_DS_FAST_PLCPHDR);
1609
1610
1611         *plcp = (80 * len) / plcp_signal;
1612         remainder = (80 * len) % plcp_signal;
1613         if (plcp_signal == PLCP_SIGNAL_11M &&
1614             remainder <= 30 && remainder > 0)
1615                 *plcp = (*plcp | 0x8000) + 1;
1616         else if (remainder)
1617                 (*plcp)++;
1618 }
1619
1620 /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */
1621 static int adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1622                            u16 plcp_signal,
1623                            size_t hdrlen)
1624 {
1625         struct adm8211_priv *priv = dev->priv;
1626         unsigned long flags;
1627         dma_addr_t mapping;
1628         unsigned int entry;
1629         u32 flag;
1630
1631         mapping = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
1632                                  DMA_TO_DEVICE);
1633         if (dma_mapping_error(&priv->pdev->dev, mapping))
1634                 return -ENOMEM;
1635
1636         spin_lock_irqsave(&priv->lock, flags);
1637
1638         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1639                 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1640         else
1641                 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1642
1643         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1644                 ieee80211_stop_queue(dev, 0);
1645
1646         entry = priv->cur_tx % priv->tx_ring_size;
1647
1648         priv->tx_buffers[entry].skb = skb;
1649         priv->tx_buffers[entry].mapping = mapping;
1650         priv->tx_buffers[entry].hdrlen = hdrlen;
1651         priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
1652
1653         if (entry == priv->tx_ring_size - 1)
1654                 flag |= TDES1_CONTROL_TER;
1655         priv->tx_ring[entry].length = cpu_to_le32(flag | skb->len);
1656
1657         /* Set TX rate (SIGNAL field in PLCP PPDU format) */
1658         flag = TDES0_CONTROL_OWN | (plcp_signal << 20) | 8 /* ? */;
1659         priv->tx_ring[entry].status = cpu_to_le32(flag);
1660
1661         priv->cur_tx++;
1662
1663         spin_unlock_irqrestore(&priv->lock, flags);
1664
1665         /* Trigger transmit poll */
1666         ADM8211_CSR_WRITE(TDR, 0);
1667
1668         return 0;
1669 }
1670
1671 /* Put adm8211_tx_hdr on skb and transmit */
1672 static void adm8211_tx(struct ieee80211_hw *dev,
1673                        struct ieee80211_tx_control *control,
1674                        struct sk_buff *skb)
1675 {
1676         struct adm8211_tx_hdr *txhdr;
1677         size_t payload_len, hdrlen;
1678         int plcp, dur, len, plcp_signal, short_preamble;
1679         struct ieee80211_hdr *hdr;
1680         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1681         struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info);
1682         u8 rc_flags;
1683
1684         rc_flags = info->control.rates[0].flags;
1685         short_preamble = !!(rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE);
1686         plcp_signal = txrate->bitrate;
1687
1688         hdr = (struct ieee80211_hdr *)skb->data;
1689         hdrlen = ieee80211_hdrlen(hdr->frame_control);
1690         memcpy(skb->cb, skb->data, hdrlen);
1691         hdr = (struct ieee80211_hdr *)skb->cb;
1692         skb_pull(skb, hdrlen);
1693         payload_len = skb->len;
1694
1695         txhdr = skb_push(skb, sizeof(*txhdr));
1696         memset(txhdr, 0, sizeof(*txhdr));
1697         memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
1698         txhdr->signal = plcp_signal;
1699         txhdr->frame_body_size = cpu_to_le16(payload_len);
1700         txhdr->frame_control = hdr->frame_control;
1701
1702         len = hdrlen + payload_len + FCS_LEN;
1703
1704         txhdr->frag = cpu_to_le16(0x0FFF);
1705         adm8211_calc_durations(&dur, &plcp, payload_len,
1706                                len, plcp_signal, short_preamble);
1707         txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1708         txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1709         txhdr->dur_frag_head = cpu_to_le16(dur);
1710         txhdr->dur_frag_tail = cpu_to_le16(dur);
1711
1712         txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1713
1714         if (short_preamble)
1715                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1716
1717         if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1718                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1719
1720         txhdr->retry_limit = info->control.rates[0].count;
1721
1722         if (adm8211_tx_raw(dev, skb, plcp_signal, hdrlen)) {
1723                 /* Drop packet */
1724                 ieee80211_free_txskb(dev, skb);
1725         }
1726 }
1727
1728 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1729 {
1730         struct adm8211_priv *priv = dev->priv;
1731         unsigned int ring_size;
1732
1733         priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1734                                    sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1735         if (!priv->rx_buffers)
1736                 return -ENOMEM;
1737
1738         priv->tx_buffers = (void *)priv->rx_buffers +
1739                            sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1740
1741         /* Allocate TX/RX descriptors */
1742         ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1743                     sizeof(struct adm8211_desc) * priv->tx_ring_size;
1744         priv->rx_ring = dma_alloc_coherent(&priv->pdev->dev, ring_size,
1745                                            &priv->rx_ring_dma, GFP_KERNEL);
1746
1747         if (!priv->rx_ring) {
1748                 kfree(priv->rx_buffers);
1749                 priv->rx_buffers = NULL;
1750                 priv->tx_buffers = NULL;
1751                 return -ENOMEM;
1752         }
1753
1754         priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
1755         priv->tx_ring_dma = priv->rx_ring_dma +
1756                             sizeof(struct adm8211_desc) * priv->rx_ring_size;
1757
1758         return 0;
1759 }
1760
1761 static const struct ieee80211_ops adm8211_ops = {
1762         .tx                     = adm8211_tx,
1763         .start                  = adm8211_start,
1764         .stop                   = adm8211_stop,
1765         .add_interface          = adm8211_add_interface,
1766         .remove_interface       = adm8211_remove_interface,
1767         .config                 = adm8211_config,
1768         .bss_info_changed       = adm8211_bss_info_changed,
1769         .prepare_multicast      = adm8211_prepare_multicast,
1770         .configure_filter       = adm8211_configure_filter,
1771         .get_stats              = adm8211_get_stats,
1772         .get_tsf                = adm8211_get_tsft
1773 };
1774
1775 static int adm8211_probe(struct pci_dev *pdev,
1776                                    const struct pci_device_id *id)
1777 {
1778         struct ieee80211_hw *dev;
1779         struct adm8211_priv *priv;
1780         unsigned long mem_len;
1781         unsigned int io_len;
1782         int err;
1783         u32 reg;
1784         u8 perm_addr[ETH_ALEN];
1785
1786         err = pci_enable_device(pdev);
1787         if (err) {
1788                 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1789                        pci_name(pdev));
1790                 return err;
1791         }
1792
1793         io_len = pci_resource_len(pdev, 0);
1794         mem_len = pci_resource_len(pdev, 1);
1795         if (io_len < 256 || mem_len < 1024) {
1796                 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1797                        pci_name(pdev));
1798                 err = -ENOMEM;
1799                 goto err_disable_pdev;
1800         }
1801
1802
1803         /* check signature */
1804         pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1805         if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1806                 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1807                        pci_name(pdev), reg);
1808                 err = -EINVAL;
1809                 goto err_disable_pdev;
1810         }
1811
1812         err = pci_request_regions(pdev, "adm8211");
1813         if (err) {
1814                 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1815                        pci_name(pdev));
1816                 return err; /* someone else grabbed it? don't disable it */
1817         }
1818
1819         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1820         if (err) {
1821                 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1822                        pci_name(pdev));
1823                 goto err_free_reg;
1824         }
1825
1826         pci_set_master(pdev);
1827
1828         dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1829         if (!dev) {
1830                 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1831                        pci_name(pdev));
1832                 err = -ENOMEM;
1833                 goto err_free_reg;
1834         }
1835         priv = dev->priv;
1836         priv->pdev = pdev;
1837
1838         spin_lock_init(&priv->lock);
1839
1840         SET_IEEE80211_DEV(dev, &pdev->dev);
1841
1842         pci_set_drvdata(pdev, dev);
1843
1844         priv->map = pci_iomap(pdev, 1, mem_len);
1845         if (!priv->map)
1846                 priv->map = pci_iomap(pdev, 0, io_len);
1847
1848         if (!priv->map) {
1849                 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1850                        pci_name(pdev));
1851                 err = -ENOMEM;
1852                 goto err_free_dev;
1853         }
1854
1855         priv->rx_ring_size = rx_ring_size;
1856         priv->tx_ring_size = tx_ring_size;
1857
1858         err = adm8211_alloc_rings(dev);
1859         if (err) {
1860                 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1861                        pci_name(pdev));
1862                 goto err_iounmap;
1863         }
1864
1865         *(__le32 *)perm_addr = cpu_to_le32(ADM8211_CSR_READ(PAR0));
1866         *(__le16 *)&perm_addr[4] =
1867                 cpu_to_le16(ADM8211_CSR_READ(PAR1) & 0xFFFF);
1868
1869         if (!is_valid_ether_addr(perm_addr)) {
1870                 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1871                        pci_name(pdev));
1872                 eth_random_addr(perm_addr);
1873         }
1874         SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1875
1876         dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1877         /* dev->flags = RX_INCLUDES_FCS in promisc mode */
1878         ieee80211_hw_set(dev, SIGNAL_UNSPEC);
1879         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1880
1881         dev->max_signal = 100;    /* FIXME: find better value */
1882
1883         dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1884
1885         priv->retry_limit = 3;
1886         priv->ant_power = 0x40;
1887         priv->tx_power = 0x40;
1888         priv->lpf_cutoff = 0xFF;
1889         priv->lnags_threshold = 0xFF;
1890         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1891
1892         /* Power-on issue. EEPROM won't read correctly without */
1893         if (pdev->revision >= ADM8211_REV_BA) {
1894                 ADM8211_CSR_WRITE(FRCTL, 0);
1895                 ADM8211_CSR_READ(FRCTL);
1896                 ADM8211_CSR_WRITE(FRCTL, 1);
1897                 ADM8211_CSR_READ(FRCTL);
1898                 msleep(100);
1899         }
1900
1901         err = adm8211_read_eeprom(dev);
1902         if (err) {
1903                 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1904                        pci_name(pdev));
1905                 goto err_free_desc;
1906         }
1907
1908         priv->channel = 1;
1909
1910         dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
1911
1912         wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1913
1914         err = ieee80211_register_hw(dev);
1915         if (err) {
1916                 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1917                        pci_name(pdev));
1918                 goto err_free_eeprom;
1919         }
1920
1921         wiphy_info(dev->wiphy, "hwaddr %pM, Rev 0x%02x\n",
1922                    dev->wiphy->perm_addr, pdev->revision);
1923
1924         return 0;
1925
1926  err_free_eeprom:
1927         kfree(priv->eeprom);
1928
1929  err_free_desc:
1930         dma_free_coherent(&pdev->dev,
1931                           sizeof(struct adm8211_desc) * priv->rx_ring_size +
1932                           sizeof(struct adm8211_desc) * priv->tx_ring_size,
1933                           priv->rx_ring, priv->rx_ring_dma);
1934         kfree(priv->rx_buffers);
1935
1936  err_iounmap:
1937         pci_iounmap(pdev, priv->map);
1938
1939  err_free_dev:
1940         ieee80211_free_hw(dev);
1941
1942  err_free_reg:
1943         pci_release_regions(pdev);
1944
1945  err_disable_pdev:
1946         pci_disable_device(pdev);
1947         return err;
1948 }
1949
1950
1951 static void adm8211_remove(struct pci_dev *pdev)
1952 {
1953         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1954         struct adm8211_priv *priv;
1955
1956         if (!dev)
1957                 return;
1958
1959         ieee80211_unregister_hw(dev);
1960
1961         priv = dev->priv;
1962
1963         dma_free_coherent(&pdev->dev,
1964                           sizeof(struct adm8211_desc) * priv->rx_ring_size +
1965                           sizeof(struct adm8211_desc) * priv->tx_ring_size,
1966                           priv->rx_ring, priv->rx_ring_dma);
1967
1968         kfree(priv->rx_buffers);
1969         kfree(priv->eeprom);
1970         pci_iounmap(pdev, priv->map);
1971         pci_release_regions(pdev);
1972         pci_disable_device(pdev);
1973         ieee80211_free_hw(dev);
1974 }
1975
1976
1977 #define adm8211_suspend NULL
1978 #define adm8211_resume NULL
1979
1980 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
1981
1982 static SIMPLE_DEV_PM_OPS(adm8211_pm_ops, adm8211_suspend, adm8211_resume);
1983
1984 /* TODO: implement enable_wake */
1985 static struct pci_driver adm8211_driver = {
1986         .name           = "adm8211",
1987         .id_table       = adm8211_pci_id_table,
1988         .probe          = adm8211_probe,
1989         .remove         = adm8211_remove,
1990         .driver.pm      = &adm8211_pm_ops,
1991 };
1992
1993 module_pci_driver(adm8211_driver);