SAFE public projects git trees. - safe/jmp/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 const char version[] = KERN_INFO "adm8211: "
  43 "Copyright 2003, Jouni Malinen <j@w1.fi>; "
  44 "Copyright 2004-2007, Michael Wu <flamingice@sourmilk.net>\n";
  45
  46
  47 static struct pci_device_id adm8211_pci_id_table[] __devinitdata = {
  48         /* ADMtek ADM8211 */
  49         { PCI_DEVICE(0x10B7, 0x6000) }, /* 3Com 3CRSHPW796 */
  50         { PCI_DEVICE(0x1200, 0x8201) }, /* ? */
  51         { PCI_DEVICE(0x1317, 0x8201) }, /* ADM8211A */
  52         { PCI_DEVICE(0x1317, 0x8211) }, /* ADM8211B/C */
  53         { 0 }
  54 };
  55
  56 static void adm8211_eeprom_register_read(struct eeprom_93cx6 *eeprom)
  57 {
  58         struct adm8211_priv *priv = eeprom->data;
  59         u32 reg = ADM8211_CSR_READ(SPR);
  60
  61         eeprom->reg_data_in = reg & ADM8211_SPR_SDI;
  62         eeprom->reg_data_out = reg & ADM8211_SPR_SDO;
  63         eeprom->reg_data_clock = reg & ADM8211_SPR_SCLK;
  64         eeprom->reg_chip_select = reg & ADM8211_SPR_SCS;
  65 }
  66
  67 static void adm8211_eeprom_register_write(struct eeprom_93cx6 *eeprom)
  68 {
  69         struct adm8211_priv *priv = eeprom->data;
  70         u32 reg = 0x4000 | ADM8211_SPR_SRS;
  71
  72         if (eeprom->reg_data_in)
  73                 reg |= ADM8211_SPR_SDI;
  74         if (eeprom->reg_data_out)
  75                 reg |= ADM8211_SPR_SDO;
  76         if (eeprom->reg_data_clock)
  77                 reg |= ADM8211_SPR_SCLK;
  78         if (eeprom->reg_chip_select)
  79                 reg |= ADM8211_SPR_SCS;
  80
  81         ADM8211_CSR_WRITE(SPR, reg);
  82         ADM8211_CSR_READ(SPR);          /* eeprom_delay */
  83 }
  84
  85 static int adm8211_read_eeprom(struct ieee80211_hw *dev)
  86 {
  87         struct adm8211_priv *priv = dev->priv;
  88         unsigned int words, i;
  89         struct ieee80211_chan_range chan_range;
  90         u16 cr49;
  91         struct eeprom_93cx6 eeprom = {
  92                 .data           = priv,
  93                 .register_read  = adm8211_eeprom_register_read,
  94                 .register_write = adm8211_eeprom_register_write
  95         };
  96
  97         if (ADM8211_CSR_READ(CSR_TEST0) & ADM8211_CSR_TEST0_EPTYP) {
  98                 /* 256 * 16-bit = 512 bytes */
  99                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 100                 words = 256;
 101         } else {
 102                 /* 64 * 16-bit = 128 bytes */
 103                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 104                 words = 64;
 105         }
 106
 107         priv->eeprom_len = words * 2;
 108         priv->eeprom = kmalloc(priv->eeprom_len, GFP_KERNEL);
 109         if (!priv->eeprom)
 110                 return -ENOMEM;
 111
 112         eeprom_93cx6_multiread(&eeprom, 0, (__le16 __force *)priv->eeprom, words);
 113
 114         cr49 = le16_to_cpu(priv->eeprom->cr49);
 115         priv->rf_type = (cr49 >> 3) & 0x7;
 116         switch (priv->rf_type) {
 117         case ADM8211_TYPE_INTERSIL:
 118         case ADM8211_TYPE_RFMD:
 119         case ADM8211_TYPE_MARVEL:
 120         case ADM8211_TYPE_AIROHA:
 121         case ADM8211_TYPE_ADMTEK:
 122                 break;
 123
 124         default:
 125                 if (priv->revid < ADM8211_REV_CA)
 126                         priv->rf_type = ADM8211_TYPE_RFMD;
 127                 else
 128                         priv->rf_type = ADM8211_TYPE_AIROHA;
 129
 130                 printk(KERN_WARNING "%s (adm8211): Unknown RFtype %d\n",
 131                        pci_name(priv->pdev), (cr49 >> 3) & 0x7);
 132         }
 133
 134         priv->bbp_type = cr49 & 0x7;
 135         switch (priv->bbp_type) {
 136         case ADM8211_TYPE_INTERSIL:
 137         case ADM8211_TYPE_RFMD:
 138         case ADM8211_TYPE_MARVEL:
 139         case ADM8211_TYPE_AIROHA:
 140         case ADM8211_TYPE_ADMTEK:
 141                 break;
 142         default:
 143                 if (priv->revid < ADM8211_REV_CA)
 144                         priv->bbp_type = ADM8211_TYPE_RFMD;
 145                 else
 146                         priv->bbp_type = ADM8211_TYPE_ADMTEK;
 147
 148                 printk(KERN_WARNING "%s (adm8211): Unknown BBPtype: %d\n",
 149                        pci_name(priv->pdev), cr49 >> 3);
 150         }
 151
 152         if (priv->eeprom->country_code >= ARRAY_SIZE(cranges)) {
 153                 printk(KERN_WARNING "%s (adm8211): Invalid country code (%d)\n",
 154                        pci_name(priv->pdev), priv->eeprom->country_code);
 155
 156                 chan_range = cranges[2];
 157         } else
 158                 chan_range = cranges[priv->eeprom->country_code];
 159
 160         printk(KERN_DEBUG "%s (adm8211): Channel range: %d - %d\n",
 161                pci_name(priv->pdev), (int)chan_range.min, (int)chan_range.max);
 162
 163         priv->modes[0].num_channels = chan_range.max - chan_range.min + 1;
 164         priv->modes[0].channels = priv->channels;
 165
 166         memcpy(priv->channels, adm8211_channels, sizeof(adm8211_channels));
 167
 168         for (i = 1; i <= ARRAY_SIZE(adm8211_channels); i++)
 169                 if (i >= chan_range.min && i <= chan_range.max)
 170                         priv->channels[i - 1].flag =
 171                                 IEEE80211_CHAN_W_SCAN |
 172                                 IEEE80211_CHAN_W_ACTIVE_SCAN |
 173                                 IEEE80211_CHAN_W_IBSS;
 174
 175         switch (priv->eeprom->specific_bbptype) {
 176         case ADM8211_BBP_RFMD3000:
 177         case ADM8211_BBP_RFMD3002:
 178         case ADM8211_BBP_ADM8011:
 179                 priv->specific_bbptype = priv->eeprom->specific_bbptype;
 180                 break;
 181
 182         default:
 183                 if (priv->revid < ADM8211_REV_CA)
 184                         priv->specific_bbptype = ADM8211_BBP_RFMD3000;
 185                 else
 186                         priv->specific_bbptype = ADM8211_BBP_ADM8011;
 187
 188                 printk(KERN_WARNING "%s (adm8211): Unknown specific BBP: %d\n",
 189                        pci_name(priv->pdev), priv->eeprom->specific_bbptype);
 190         }
 191
 192         switch (priv->eeprom->specific_rftype) {
 193         case ADM8211_RFMD2948:
 194         case ADM8211_RFMD2958:
 195         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 196         case ADM8211_MAX2820:
 197         case ADM8211_AL2210L:
 198                 priv->transceiver_type = priv->eeprom->specific_rftype;
 199                 break;
 200
 201         default:
 202                 if (priv->revid == ADM8211_REV_BA)
 203                         priv->transceiver_type = ADM8211_RFMD2958_RF3000_CONTROL_POWER;
 204                 else if (priv->revid == ADM8211_REV_CA)
 205                         priv->transceiver_type = ADM8211_AL2210L;
 206                 else if (priv->revid == ADM8211_REV_AB)
 207                         priv->transceiver_type = ADM8211_RFMD2948;
 208
 209                 printk(KERN_WARNING "%s (adm8211): Unknown transceiver: %d\n",
 210                        pci_name(priv->pdev), priv->eeprom->specific_rftype);
 211
 212                 break;
 213         }
 214
 215         printk(KERN_DEBUG "%s (adm8211): RFtype=%d BBPtype=%d Specific BBP=%d "
 216                "Transceiver=%d\n", pci_name(priv->pdev), priv->rf_type,
 217                priv->bbp_type, priv->specific_bbptype, priv->transceiver_type);
 218
 219         return 0;
 220 }
 221
 222 static inline void adm8211_write_sram(struct ieee80211_hw *dev,
 223                                       u32 addr, u32 data)
 224 {
 225         struct adm8211_priv *priv = dev->priv;
 226
 227         ADM8211_CSR_WRITE(WEPCTL, addr | ADM8211_WEPCTL_TABLE_WR |
 228                           (priv->revid < ADM8211_REV_BA ?
 229                            0 : ADM8211_WEPCTL_SEL_WEPTABLE ));
 230         ADM8211_CSR_READ(WEPCTL);
 231         msleep(1);
 232
 233         ADM8211_CSR_WRITE(WESK, data);
 234         ADM8211_CSR_READ(WESK);
 235         msleep(1);
 236 }
 237
 238 static void adm8211_write_sram_bytes(struct ieee80211_hw *dev,
 239                                      unsigned int addr, u8 *buf,
 240                                      unsigned int len)
 241 {
 242         struct adm8211_priv *priv = dev->priv;
 243         u32 reg = ADM8211_CSR_READ(WEPCTL);
 244         unsigned int i;
 245
 246         if (priv->revid < ADM8211_REV_BA) {
 247                 for (i = 0; i < len; i += 2) {
 248                         u16 val = buf[i] | (buf[i + 1] << 8);
 249                         adm8211_write_sram(dev, addr + i / 2, val);
 250                 }
 251         } else {
 252                 for (i = 0; i < len; i += 4) {
 253                         u32 val = (buf[i + 0] << 0 ) | (buf[i + 1] << 8 ) |
 254                                   (buf[i + 2] << 16) | (buf[i + 3] << 24);
 255                         adm8211_write_sram(dev, addr + i / 4, val);
 256                 }
 257         }
 258
 259         ADM8211_CSR_WRITE(WEPCTL, reg);
 260 }
 261
 262 static void adm8211_clear_sram(struct ieee80211_hw *dev)
 263 {
 264         struct adm8211_priv *priv = dev->priv;
 265         u32 reg = ADM8211_CSR_READ(WEPCTL);
 266         unsigned int addr;
 267
 268         for (addr = 0; addr < ADM8211_SRAM_SIZE; addr++)
 269                 adm8211_write_sram(dev, addr, 0);
 270
 271         ADM8211_CSR_WRITE(WEPCTL, reg);
 272 }
 273
 274 static int adm8211_get_stats(struct ieee80211_hw *dev,
 275                              struct ieee80211_low_level_stats *stats)
 276 {
 277         struct adm8211_priv *priv = dev->priv;
 278
 279         memcpy(stats, &priv->stats, sizeof(*stats));
 280
 281         return 0;
 282 }
 283
 284 static void adm8211_set_rx_mode(struct ieee80211_hw *dev,
 285                                 unsigned short flags, int mc_count)
 286 {
 287         struct adm8211_priv *priv = dev->priv;
 288         unsigned int bit_nr;
 289         u32 mc_filter[2];
 290         struct dev_mc_list *mclist;
 291         void *tmp;
 292
 293         if (flags & IFF_PROMISC) {
 294                 priv->nar |= ADM8211_NAR_PR;
 295                 priv->nar &= ~ADM8211_NAR_MM;
 296                 mc_filter[1] = mc_filter[0] = ~0;
 297         } else if ((flags & IFF_ALLMULTI) || (mc_count > -1)) {
 298                 priv->nar &= ~ADM8211_NAR_PR;
 299                 priv->nar |= ADM8211_NAR_MM;
 300                 mc_filter[1] = mc_filter[0] = ~0;
 301         } else {
 302                 priv->nar &= ~(ADM8211_NAR_MM | ADM8211_NAR_PR);
 303                 mc_filter[1] = mc_filter[0] = 0;
 304                 mclist = NULL;
 305                 while ((mclist = ieee80211_get_mc_list_item(dev, mclist, &tmp))) {
 306                         bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
 307
 308                         bit_nr &= 0x3F;
 309                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
 310                 }
 311         }
 312
 313         ADM8211_IDLE_RX();
 314
 315         ADM8211_CSR_WRITE(MAR0, mc_filter[0]);
 316         ADM8211_CSR_WRITE(MAR1, mc_filter[1]);
 317         ADM8211_CSR_READ(NAR);
 318
 319         if (flags & IFF_PROMISC)
 320                 dev->flags |= IEEE80211_HW_RX_INCLUDES_FCS;
 321         else
 322                 dev->flags &= ~IEEE80211_HW_RX_INCLUDES_FCS;
 323
 324         ADM8211_RESTORE();
 325 }
 326
 327 static int adm8211_get_tx_stats(struct ieee80211_hw *dev,
 328                                 struct ieee80211_tx_queue_stats *stats)
 329 {
 330         struct adm8211_priv *priv = dev->priv;
 331         struct ieee80211_tx_queue_stats_data *data = &stats->data[0];
 332
 333         data->len = priv->cur_tx - priv->dirty_tx;
 334         data->limit = priv->tx_ring_size - 2;
 335         data->count = priv->dirty_tx;
 336
 337         return 0;
 338 }
 339
 340 static void adm8211_interrupt_tci(struct ieee80211_hw *dev)
 341 {
 342         struct adm8211_priv *priv = dev->priv;
 343         unsigned int dirty_tx;
 344
 345         spin_lock(&priv->lock);
 346
 347         for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) {
 348                 unsigned int entry = dirty_tx % priv->tx_ring_size;
 349                 u32 status = le32_to_cpu(priv->tx_ring[entry].status);
 350                 struct adm8211_tx_ring_info *info;
 351                 struct sk_buff *skb;
 352
 353                 if (status & TDES0_CONTROL_OWN ||
 354                     !(status & TDES0_CONTROL_DONE))
 355                         break;
 356
 357                 info = &priv->tx_buffers[entry];
 358                 skb = info->skb;
 359
 360                 /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */
 361
 362                 pci_unmap_single(priv->pdev, info->mapping,
 363                                  info->skb->len, PCI_DMA_TODEVICE);
 364
 365                 if (info->tx_control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) {
 366                         struct ieee80211_tx_status tx_status = {{0}};
 367                         struct ieee80211_hdr *hdr;
 368                         size_t hdrlen = info->hdrlen;
 369
 370                         skb_pull(skb, sizeof(struct adm8211_tx_hdr));
 371                         hdr = (struct ieee80211_hdr *)skb_push(skb, hdrlen);
 372                         memcpy(hdr, skb->cb, hdrlen);
 373                         memcpy(&tx_status.control, &info->tx_control,
 374                                sizeof(tx_status.control));
 375                         if (!(status & TDES0_STATUS_ES))
 376                                 tx_status.flags |= IEEE80211_TX_STATUS_ACK;
 377                         ieee80211_tx_status_irqsafe(dev, skb, &tx_status);
 378                 } else
 379                         dev_kfree_skb_irq(skb);
 380                 info->skb = NULL;
 381         }
 382
 383         if (priv->cur_tx - dirty_tx < priv->tx_ring_size - 2)
 384                 ieee80211_wake_queue(dev, 0);
 385
 386         priv->dirty_tx = dirty_tx;
 387         spin_unlock(&priv->lock);
 388 }
 389
 390
 391 static void adm8211_interrupt_rci(struct ieee80211_hw *dev)
 392 {
 393         struct adm8211_priv *priv = dev->priv;
 394         unsigned int entry = priv->cur_rx % priv->rx_ring_size;
 395         u32 status;
 396         unsigned int pktlen;
 397         struct sk_buff *skb, *newskb;
 398         unsigned int limit = priv->rx_ring_size;
 399         static const u8 rate_tbl[] = {10, 20, 55, 110, 220};
 400         u8 rssi, rate;
 401
 402         while (!(priv->rx_ring[entry].status & cpu_to_le32(RDES0_STATUS_OWN))) {
 403                 if (!limit--)
 404                         break;
 405
 406                 status = le32_to_cpu(priv->rx_ring[entry].status);
 407                 rate = (status & RDES0_STATUS_RXDR) >> 12;
 408                 rssi = le32_to_cpu(priv->rx_ring[entry].length) &
 409                         RDES1_STATUS_RSSI;
 410
 411                 pktlen = status & RDES0_STATUS_FL;
 412                 if (pktlen > RX_PKT_SIZE) {
 413                         if (net_ratelimit())
 414                                 printk(KERN_DEBUG "%s: frame too long (%d)\n",
 415                                        wiphy_name(dev->wiphy), pktlen);
 416                         pktlen = RX_PKT_SIZE;
 417                 }
 418
 419                 if (!priv->soft_rx_crc && status & RDES0_STATUS_ES) {
 420                         skb = NULL; /* old buffer will be reused */
 421                         /* TODO: update RX error stats */
 422                         /* TODO: check RDES0_STATUS_CRC*E */
 423                 } else if (pktlen < RX_COPY_BREAK) {
 424                         skb = dev_alloc_skb(pktlen);
 425                         if (skb) {
 426                                 pci_dma_sync_single_for_cpu(
 427                                         priv->pdev,
 428                                         priv->rx_buffers[entry].mapping,
 429                                         pktlen, PCI_DMA_FROMDEVICE);
 430                                 memcpy(skb_put(skb, pktlen),
 431                                        skb_tail_pointer(priv->rx_buffers[entry].skb),
 432                                        pktlen);
 433                                 pci_dma_sync_single_for_device(
 434                                         priv->pdev,
 435                                         priv->rx_buffers[entry].mapping,
 436                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 437                         }
 438                 } else {
 439                         newskb = dev_alloc_skb(RX_PKT_SIZE);
 440                         if (newskb) {
 441                                 skb = priv->rx_buffers[entry].skb;
 442                                 skb_put(skb, pktlen);
 443                                 pci_unmap_single(
 444                                         priv->pdev,
 445                                         priv->rx_buffers[entry].mapping,
 446                                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
 447                                 priv->rx_buffers[entry].skb = newskb;
 448                                 priv->rx_buffers[entry].mapping =
 449                                         pci_map_single(priv->pdev,
 450                                                        skb_tail_pointer(newskb),
 451                                                        RX_PKT_SIZE,
 452                                                        PCI_DMA_FROMDEVICE);
 453                         } else {
 454                                 skb = NULL;
 455                                 /* TODO: update rx dropped stats */
 456                         }
 457
 458                         priv->rx_ring[entry].buffer1 =
 459                                 cpu_to_le32(priv->rx_buffers[entry].mapping);
 460                 }
 461
 462                 priv->rx_ring[entry].status = cpu_to_le32(RDES0_STATUS_OWN |
 463                                                           RDES0_STATUS_SQL);
 464                 priv->rx_ring[entry].length =
 465                         cpu_to_le32(RX_PKT_SIZE |
 466                                     (entry == priv->rx_ring_size - 1 ?
 467                                      RDES1_CONTROL_RER : 0));
 468
 469                 if (skb) {
 470                         struct ieee80211_rx_status rx_status = {0};
 471
 472                         if (priv->revid < ADM8211_REV_CA)
 473                                 rx_status.ssi = rssi;
 474                         else
 475                                 rx_status.ssi = 100 - rssi;
 476
 477                         if (rate <= 4)
 478                                 rx_status.rate = rate_tbl[rate];
 479
 480                         rx_status.channel = priv->channel;
 481                         rx_status.freq = adm8211_channels[priv->channel - 1].freq;
 482                         rx_status.phymode = MODE_IEEE80211B;
 483
 484                         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 485                 }
 486
 487                 entry = (++priv->cur_rx) % priv->rx_ring_size;
 488         }
 489
 490         /* TODO: check LPC and update stats? */
 491 }
 492
 493
 494 static irqreturn_t adm8211_interrupt(int irq, void *dev_id)
 495 {
 496 #define ADM8211_INT(x)                                                     \
 497 do {                                                                       \
 498         if (unlikely(stsr & ADM8211_STSR_ ## x))                           \
 499                 printk(KERN_DEBUG "%s: " #x "\n", wiphy_name(dev->wiphy)); \
 500 } while (0)
 501
 502         struct ieee80211_hw *dev = dev_id;
 503         struct adm8211_priv *priv = dev->priv;
 504         unsigned int count = 0;
 505         u32 stsr;
 506
 507         do {
 508                 stsr = ADM8211_CSR_READ(STSR);
 509                 ADM8211_CSR_WRITE(STSR, stsr);
 510                 if (stsr == 0xffffffff)
 511                         return IRQ_HANDLED;
 512
 513                 if (!(stsr & (ADM8211_STSR_NISS | ADM8211_STSR_AISS)))
 514                         break;
 515
 516                 if (stsr & ADM8211_STSR_RCI)
 517                         adm8211_interrupt_rci(dev);
 518                 if (stsr & ADM8211_STSR_TCI)
 519                         adm8211_interrupt_tci(dev);
 520
 521                 /*ADM8211_INT(LinkOn);*/
 522                 /*ADM8211_INT(LinkOff);*/
 523
 524                 ADM8211_INT(PCF);
 525                 ADM8211_INT(BCNTC);
 526                 ADM8211_INT(GPINT);
 527                 ADM8211_INT(ATIMTC);
 528                 ADM8211_INT(TSFTF);
 529                 ADM8211_INT(TSCZ);
 530                 ADM8211_INT(SQL);
 531                 ADM8211_INT(WEPTD);
 532                 ADM8211_INT(ATIME);
 533                 /*ADM8211_INT(TBTT);*/
 534                 ADM8211_INT(TEIS);
 535                 ADM8211_INT(FBE);
 536                 ADM8211_INT(REIS);
 537                 ADM8211_INT(GPTT);
 538                 ADM8211_INT(RPS);
 539                 ADM8211_INT(RDU);
 540                 ADM8211_INT(TUF);
 541                 /*ADM8211_INT(TRT);*/
 542                 /*ADM8211_INT(TLT);*/
 543                 /*ADM8211_INT(TDU);*/
 544                 ADM8211_INT(TPS);
 545
 546         } while (count++ < 20);
 547
 548         return IRQ_RETVAL(count);
 549
 550 #undef ADM8211_INT
 551 }
 552
 553 #define WRITE_SYN(name,v_mask,v_shift,a_mask,a_shift,bits,prewrite,postwrite)\
 554 static void adm8211_rf_write_syn_ ## name (struct ieee80211_hw *dev,         \
 555                                            u16 addr, u32 value) {            \
 556         struct adm8211_priv *priv = dev->priv;                               \
 557         unsigned int i;                                                      \
 558         u32 reg, bitbuf;                                                     \
 559                                                                              \
 560         value &= v_mask;                                                     \
 561         addr &= a_mask;                                                      \
 562         bitbuf = (value << v_shift) | (addr << a_shift);                     \
 563                                                                              \
 564         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_1);                 \
 565         ADM8211_CSR_READ(SYNRF);                                             \
 566         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_IF_SELECT_0);                 \
 567         ADM8211_CSR_READ(SYNRF);                                             \
 568                                                                              \
 569         if (prewrite) {                                                      \
 570                 ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_WRITE_SYNDATA_0);     \
 571                 ADM8211_CSR_READ(SYNRF);                                     \
 572         }                                                                    \
 573                                                                              \
 574         for (i = 0; i <= bits; i++) {                                        \
 575                 if (bitbuf & (1 << (bits - i)))                              \
 576                         reg = ADM8211_SYNRF_WRITE_SYNDATA_1;                 \
 577                 else                                                         \
 578                         reg = ADM8211_SYNRF_WRITE_SYNDATA_0;                 \
 579                                                                              \
 580                 ADM8211_CSR_WRITE(SYNRF, reg);                               \
 581                 ADM8211_CSR_READ(SYNRF);                                     \
 582                                                                              \
 583                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_1); \
 584                 ADM8211_CSR_READ(SYNRF);                                     \
 585                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_WRITE_CLOCK_0); \
 586                 ADM8211_CSR_READ(SYNRF);                                     \
 587         }                                                                    \
 588                                                                              \
 589         if (postwrite == 1) {                                                \
 590                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_0);   \
 591                 ADM8211_CSR_READ(SYNRF);                                     \
 592         }                                                                    \
 593         if (postwrite == 2) {                                                \
 594                 ADM8211_CSR_WRITE(SYNRF, reg | ADM8211_SYNRF_IF_SELECT_1);   \
 595                 ADM8211_CSR_READ(SYNRF);                                     \
 596         }                                                                    \
 597                                                                              \
 598         ADM8211_CSR_WRITE(SYNRF, 0);                                         \
 599         ADM8211_CSR_READ(SYNRF);                                             \
 600 }
 601
 602 WRITE_SYN(max2820,  0x00FFF, 0, 0x0F, 12, 15, 1, 1)
 603 WRITE_SYN(al2210l,  0xFFFFF, 4, 0x0F,  0, 23, 1, 1)
 604 WRITE_SYN(rfmd2958, 0x3FFFF, 0, 0x1F, 18, 23, 0, 1)
 605 WRITE_SYN(rfmd2948, 0x0FFFF, 4, 0x0F,  0, 21, 0, 2)
 606
 607 #undef WRITE_SYN
 608
 609 static int adm8211_write_bbp(struct ieee80211_hw *dev, u8 addr, u8 data)
 610 {
 611         struct adm8211_priv *priv = dev->priv;
 612         unsigned int timeout;
 613         u32 reg;
 614
 615         timeout = 10;
 616         while (timeout > 0) {
 617                 reg = ADM8211_CSR_READ(BBPCTL);
 618                 if (!(reg & (ADM8211_BBPCTL_WR | ADM8211_BBPCTL_RD)))
 619                         break;
 620                 timeout--;
 621                 msleep(2);
 622         }
 623
 624         if (timeout == 0) {
 625                 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
 626                        " prewrite (reg=0x%08x)\n",
 627                        wiphy_name(dev->wiphy), addr, data, reg);
 628                 return -ETIMEDOUT;
 629         }
 630
 631         switch (priv->bbp_type) {
 632         case ADM8211_TYPE_INTERSIL:
 633                 reg = ADM8211_BBPCTL_MMISEL;    /* three wire interface */
 634                 break;
 635         case ADM8211_TYPE_RFMD:
 636                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 637                       (0x01 << 18);
 638                 break;
 639         case ADM8211_TYPE_ADMTEK:
 640                 reg = (0x20 << 24) | ADM8211_BBPCTL_TXCE | ADM8211_BBPCTL_CCAP |
 641                       (0x05 << 18);
 642                 break;
 643         }
 644         reg |= ADM8211_BBPCTL_WR | (addr << 8) | data;
 645
 646         ADM8211_CSR_WRITE(BBPCTL, reg);
 647
 648         timeout = 10;
 649         while (timeout > 0) {
 650                 reg = ADM8211_CSR_READ(BBPCTL);
 651                 if (!(reg & ADM8211_BBPCTL_WR))
 652                         break;
 653                 timeout--;
 654                 msleep(2);
 655         }
 656
 657         if (timeout == 0) {
 658                 ADM8211_CSR_WRITE(BBPCTL, ADM8211_CSR_READ(BBPCTL) &
 659                                   ~ADM8211_BBPCTL_WR);
 660                 printk(KERN_DEBUG "%s: adm8211_write_bbp(%d,%d) failed"
 661                        " postwrite (reg=0x%08x)\n",
 662                        wiphy_name(dev->wiphy), addr, data, reg);
 663                 return -ETIMEDOUT;
 664         }
 665
 666         return 0;
 667 }
 668
 669 static int adm8211_rf_set_channel(struct ieee80211_hw *dev, unsigned int chan)
 670 {
 671         static const u32 adm8211_rfmd2958_reg5[] =
 672                 {0x22BD, 0x22D2, 0x22E8, 0x22FE, 0x2314, 0x232A, 0x2340,
 673                  0x2355, 0x236B, 0x2381, 0x2397, 0x23AD, 0x23C2, 0x23F7};
 674         static const u32 adm8211_rfmd2958_reg6[] =
 675                 {0x05D17, 0x3A2E8, 0x2E8BA, 0x22E8B, 0x1745D, 0x0BA2E, 0x00000,
 676                  0x345D1, 0x28BA2, 0x1D174, 0x11745, 0x05D17, 0x3A2E8, 0x11745};
 677
 678         struct adm8211_priv *priv = dev->priv;
 679         u8 ant_power = priv->ant_power > 0x3F ?
 680                 priv->eeprom->antenna_power[chan - 1] : priv->ant_power;
 681         u8 tx_power = priv->tx_power > 0x3F ?
 682                 priv->eeprom->tx_power[chan - 1] : priv->tx_power;
 683         u8 lpf_cutoff = priv->lpf_cutoff == 0xFF ?
 684                 priv->eeprom->lpf_cutoff[chan - 1] : priv->lpf_cutoff;
 685         u8 lnags_thresh = priv->lnags_threshold == 0xFF ?
 686                 priv->eeprom->lnags_threshold[chan - 1] : priv->lnags_threshold;
 687         u32 reg;
 688
 689         ADM8211_IDLE();
 690
 691         /* Program synthesizer to new channel */
 692         switch (priv->transceiver_type) {
 693         case ADM8211_RFMD2958:
 694         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 695                 adm8211_rf_write_syn_rfmd2958(dev, 0x00, 0x04007);
 696                 adm8211_rf_write_syn_rfmd2958(dev, 0x02, 0x00033);
 697
 698                 adm8211_rf_write_syn_rfmd2958(dev, 0x05,
 699                         adm8211_rfmd2958_reg5[chan - 1]);
 700                 adm8211_rf_write_syn_rfmd2958(dev, 0x06,
 701                         adm8211_rfmd2958_reg6[chan - 1]);
 702                 break;
 703
 704         case ADM8211_RFMD2948:
 705                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_MAIN_CONF,
 706                                               SI4126_MAIN_XINDIV2);
 707                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_POWERDOWN,
 708                                               SI4126_POWERDOWN_PDIB |
 709                                               SI4126_POWERDOWN_PDRB);
 710                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_PHASE_DET_GAIN, 0);
 711                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_N_DIV,
 712                                               (chan == 14 ?
 713                                                2110 : (2033 + (chan * 5))));
 714                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_N_DIV, 1496);
 715                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_RF2_R_DIV, 44);
 716                 adm8211_rf_write_syn_rfmd2948(dev, SI4126_IF_R_DIV, 44);
 717                 break;
 718
 719         case ADM8211_MAX2820:
 720                 adm8211_rf_write_syn_max2820(dev, 0x3,
 721                         (chan == 14 ? 0x054 : (0x7 + (chan * 5))));
 722                 break;
 723
 724         case ADM8211_AL2210L:
 725                 adm8211_rf_write_syn_al2210l(dev, 0x0,
 726                         (chan == 14 ? 0x229B4 : (0x22967 + (chan * 5))));
 727                 break;
 728
 729         default:
 730                 printk(KERN_DEBUG "%s: unsupported transceiver type %d\n",
 731                        wiphy_name(dev->wiphy), priv->transceiver_type);
 732                 break;
 733         }
 734
 735         /* write BBP regs */
 736         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 737
 738         /* SMC 2635W specific? adm8211b doesn't use the 2948 though.. */
 739         /* TODO: remove if SMC 2635W doesn't need this */
 740         if (priv->transceiver_type == ADM8211_RFMD2948) {
 741                 reg = ADM8211_CSR_READ(GPIO);
 742                 reg &= 0xfffc0000;
 743                 reg |= ADM8211_CSR_GPIO_EN0;
 744                 if (chan != 14)
 745                         reg |= ADM8211_CSR_GPIO_O0;
 746                 ADM8211_CSR_WRITE(GPIO, reg);
 747         }
 748
 749         if (priv->transceiver_type == ADM8211_RFMD2958) {
 750                 /* set PCNT2 */
 751                 adm8211_rf_write_syn_rfmd2958(dev, 0x0B, 0x07100);
 752                 /* set PCNT1 P_DESIRED/MID_BIAS */
 753                 reg = le16_to_cpu(priv->eeprom->cr49);
 754                 reg >>= 13;
 755                 reg <<= 15;
 756                 reg |= ant_power << 9;
 757                 adm8211_rf_write_syn_rfmd2958(dev, 0x0A, reg);
 758                 /* set TXRX TX_GAIN */
 759                 adm8211_rf_write_syn_rfmd2958(dev, 0x09, 0x00050 |
 760                         (priv->revid < ADM8211_REV_CA ? tx_power : 0));
 761         } else {
 762                 reg = ADM8211_CSR_READ(PLCPHD);
 763                 reg &= 0xff00ffff;
 764                 reg |= tx_power << 18;
 765                 ADM8211_CSR_WRITE(PLCPHD, reg);
 766         }
 767
 768         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 769                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 770         ADM8211_CSR_READ(SYNRF);
 771         msleep(30);
 772
 773         /* RF3000 BBP */
 774         if (priv->transceiver_type != ADM8211_RFMD2958)
 775                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT,
 776                                   tx_power<<2);
 777         adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, lpf_cutoff);
 778         adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, lnags_thresh);
 779         adm8211_write_bbp(dev, 0x1c, priv->revid == ADM8211_REV_BA ?
 780                                      priv->eeprom->cr28 : 0);
 781         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 782
 783         ADM8211_CSR_WRITE(SYNRF, 0);
 784
 785         /* Nothing to do for ADMtek BBP */
 786         } else if (priv->bbp_type != ADM8211_TYPE_ADMTEK)
 787                 printk(KERN_DEBUG "%s: unsupported BBP type %d\n",
 788                        wiphy_name(dev->wiphy), priv->bbp_type);
 789
 790         ADM8211_RESTORE();
 791
 792         /* update current channel for adhoc (and maybe AP mode) */
 793         reg = ADM8211_CSR_READ(CAP0);
 794         reg &= ~0xF;
 795         reg |= chan;
 796         ADM8211_CSR_WRITE(CAP0, reg);
 797
 798         return 0;
 799 }
 800
 801 static void adm8211_update_mode(struct ieee80211_hw *dev)
 802 {
 803         struct adm8211_priv *priv = dev->priv;
 804
 805         ADM8211_IDLE();
 806
 807         priv->soft_rx_crc = 0;
 808         switch (priv->mode) {
 809         case IEEE80211_IF_TYPE_STA:
 810                 priv->nar &= ~(ADM8211_NAR_PR | ADM8211_NAR_EA);
 811                 priv->nar |= ADM8211_NAR_ST | ADM8211_NAR_SR;
 812                 break;
 813         case IEEE80211_IF_TYPE_IBSS:
 814                 priv->nar &= ~ADM8211_NAR_PR;
 815                 priv->nar |= ADM8211_NAR_EA | ADM8211_NAR_ST | ADM8211_NAR_SR;
 816
 817                 /* don't trust the error bits on rev 0x20 and up in adhoc */
 818                 if (priv->revid >= ADM8211_REV_BA)
 819                         priv->soft_rx_crc = 1;
 820                 break;
 821         case IEEE80211_IF_TYPE_MNTR:
 822                 priv->nar &= ~(ADM8211_NAR_EA | ADM8211_NAR_ST);
 823                 priv->nar |= ADM8211_NAR_PR | ADM8211_NAR_SR;
 824                 break;
 825         }
 826
 827         ADM8211_RESTORE();
 828 }
 829
 830 static void adm8211_hw_init_syn(struct ieee80211_hw *dev)
 831 {
 832         struct adm8211_priv *priv = dev->priv;
 833
 834         switch (priv->transceiver_type) {
 835         case ADM8211_RFMD2958:
 836         case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 837                 /* comments taken from ADMtek vendor driver */
 838
 839                 /* Reset RF2958 after power on */
 840                 adm8211_rf_write_syn_rfmd2958(dev, 0x1F, 0x00000);
 841                 /* Initialize RF VCO Core Bias to maximum */
 842                 adm8211_rf_write_syn_rfmd2958(dev, 0x0C, 0x3001F);
 843                 /* Initialize IF PLL */
 844                 adm8211_rf_write_syn_rfmd2958(dev, 0x01, 0x29C03);
 845                 /* Initialize IF PLL Coarse Tuning */
 846                 adm8211_rf_write_syn_rfmd2958(dev, 0x03, 0x1FF6F);
 847                 /* Initialize RF PLL */
 848                 adm8211_rf_write_syn_rfmd2958(dev, 0x04, 0x29403);
 849                 /* Initialize RF PLL Coarse Tuning */
 850                 adm8211_rf_write_syn_rfmd2958(dev, 0x07, 0x1456F);
 851                 /* Initialize TX gain and filter BW (R9) */
 852                 adm8211_rf_write_syn_rfmd2958(dev, 0x09,
 853                         (priv->transceiver_type == ADM8211_RFMD2958 ?
 854                          0x10050 : 0x00050));
 855                 /* Initialize CAL register */
 856                 adm8211_rf_write_syn_rfmd2958(dev, 0x08, 0x3FFF8);
 857                 break;
 858
 859         case ADM8211_MAX2820:
 860                 adm8211_rf_write_syn_max2820(dev, 0x1, 0x01E);
 861                 adm8211_rf_write_syn_max2820(dev, 0x2, 0x001);
 862                 adm8211_rf_write_syn_max2820(dev, 0x3, 0x054);
 863                 adm8211_rf_write_syn_max2820(dev, 0x4, 0x310);
 864                 adm8211_rf_write_syn_max2820(dev, 0x5, 0x000);
 865                 break;
 866
 867         case ADM8211_AL2210L:
 868                 adm8211_rf_write_syn_al2210l(dev, 0x0, 0x0196C);
 869                 adm8211_rf_write_syn_al2210l(dev, 0x1, 0x007CB);
 870                 adm8211_rf_write_syn_al2210l(dev, 0x2, 0x3582F);
 871                 adm8211_rf_write_syn_al2210l(dev, 0x3, 0x010A9);
 872                 adm8211_rf_write_syn_al2210l(dev, 0x4, 0x77280);
 873                 adm8211_rf_write_syn_al2210l(dev, 0x5, 0x45641);
 874                 adm8211_rf_write_syn_al2210l(dev, 0x6, 0xEA130);
 875                 adm8211_rf_write_syn_al2210l(dev, 0x7, 0x80000);
 876                 adm8211_rf_write_syn_al2210l(dev, 0x8, 0x7850F);
 877                 adm8211_rf_write_syn_al2210l(dev, 0x9, 0xF900C);
 878                 adm8211_rf_write_syn_al2210l(dev, 0xA, 0x00000);
 879                 adm8211_rf_write_syn_al2210l(dev, 0xB, 0x00000);
 880                 break;
 881
 882         case ADM8211_RFMD2948:
 883         default:
 884                 break;
 885         }
 886 }
 887
 888 static int adm8211_hw_init_bbp(struct ieee80211_hw *dev)
 889 {
 890         struct adm8211_priv *priv = dev->priv;
 891         u32 reg;
 892
 893         /* write addresses */
 894         if (priv->bbp_type == ADM8211_TYPE_INTERSIL) {
 895                 ADM8211_CSR_WRITE(MMIWA,  0x100E0C0A);
 896                 ADM8211_CSR_WRITE(MMIRD0, 0x00007C7E);
 897                 ADM8211_CSR_WRITE(MMIRD1, 0x00100000);
 898         } else if (priv->bbp_type == ADM8211_TYPE_RFMD ||
 899                    priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 900                 /* check specific BBP type */
 901                 switch (priv->specific_bbptype) {
 902                 case ADM8211_BBP_RFMD3000:
 903                 case ADM8211_BBP_RFMD3002:
 904                         ADM8211_CSR_WRITE(MMIWA,  0x00009101);
 905                         ADM8211_CSR_WRITE(MMIRD0, 0x00000301);
 906                         break;
 907
 908                 case ADM8211_BBP_ADM8011:
 909                         ADM8211_CSR_WRITE(MMIWA,  0x00008903);
 910                         ADM8211_CSR_WRITE(MMIRD0, 0x00001716);
 911
 912                         reg = ADM8211_CSR_READ(BBPCTL);
 913                         reg &= ~ADM8211_BBPCTL_TYPE;
 914                         reg |= 0x5 << 18;
 915                         ADM8211_CSR_WRITE(BBPCTL, reg);
 916                         break;
 917                 }
 918
 919                 switch (priv->revid) {
 920                 case ADM8211_REV_CA:
 921                         if (priv->transceiver_type == ADM8211_RFMD2958 ||
 922                             priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
 923                             priv->transceiver_type == ADM8211_RFMD2948)
 924                                 ADM8211_CSR_WRITE(SYNCTL, 0x1 << 22);
 925                         else if (priv->transceiver_type == ADM8211_MAX2820 ||
 926                                  priv->transceiver_type == ADM8211_AL2210L)
 927                                 ADM8211_CSR_WRITE(SYNCTL, 0x3 << 22);
 928                         break;
 929
 930                 case ADM8211_REV_BA:
 931                         reg  = ADM8211_CSR_READ(MMIRD1);
 932                         reg &= 0x0000FFFF;
 933                         reg |= 0x7e100000;
 934                         ADM8211_CSR_WRITE(MMIRD1, reg);
 935                         break;
 936
 937                 case ADM8211_REV_AB:
 938                 case ADM8211_REV_AF:
 939                 default:
 940                         ADM8211_CSR_WRITE(MMIRD1, 0x7e100000);
 941                         break;
 942                 }
 943
 944                 /* For RFMD */
 945                 ADM8211_CSR_WRITE(MACTEST, 0x800);
 946         }
 947
 948         adm8211_hw_init_syn(dev);
 949
 950         /* Set RF Power control IF pin to PE1+PHYRST# */
 951         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_SELRF |
 952                           ADM8211_SYNRF_PE1 | ADM8211_SYNRF_PHYRST);
 953         ADM8211_CSR_READ(SYNRF);
 954         msleep(20);
 955
 956         /* write BBP regs */
 957         if (priv->bbp_type == ADM8211_TYPE_RFMD) {
 958                 /* RF3000 BBP */
 959                 /* another set:
 960                  * 11: c8
 961                  * 14: 14
 962                  * 15: 50 (chan 1..13; chan 14: d0)
 963                  * 1c: 00
 964                  * 1d: 84
 965                  */
 966                 adm8211_write_bbp(dev, RF3000_CCA_CTRL, 0x80);
 967                 /* antenna selection: diversity */
 968                 adm8211_write_bbp(dev, RF3000_DIVERSITY__RSSI, 0x80);
 969                 adm8211_write_bbp(dev, RF3000_TX_VAR_GAIN__TX_LEN_EXT, 0x74);
 970                 adm8211_write_bbp(dev, RF3000_LOW_GAIN_CALIB, 0x38);
 971                 adm8211_write_bbp(dev, RF3000_HIGH_GAIN_CALIB, 0x40);
 972
 973                 if (priv->eeprom->major_version < 2) {
 974                         adm8211_write_bbp(dev, 0x1c, 0x00);
 975                         adm8211_write_bbp(dev, 0x1d, 0x80);
 976                 } else {
 977                         if (priv->revid == ADM8211_REV_BA)
 978                                 adm8211_write_bbp(dev, 0x1c, priv->eeprom->cr28);
 979                         else
 980                                 adm8211_write_bbp(dev, 0x1c, 0x00);
 981
 982                         adm8211_write_bbp(dev, 0x1d, priv->eeprom->cr29);
 983                 }
 984         } else if (priv->bbp_type == ADM8211_TYPE_ADMTEK) {
 985                 /* reset baseband */
 986                 adm8211_write_bbp(dev, 0x00, 0xFF);
 987                 /* antenna selection: diversity */
 988                 adm8211_write_bbp(dev, 0x07, 0x0A);
 989
 990                 /* TODO: find documentation for this */
 991                 switch (priv->transceiver_type) {
 992                 case ADM8211_RFMD2958:
 993                 case ADM8211_RFMD2958_RF3000_CONTROL_POWER:
 994                         adm8211_write_bbp(dev, 0x00, 0x00);
 995                         adm8211_write_bbp(dev, 0x01, 0x00);
 996                         adm8211_write_bbp(dev, 0x02, 0x00);
 997                         adm8211_write_bbp(dev, 0x03, 0x00);
 998                         adm8211_write_bbp(dev, 0x06, 0x0f);
 999                         adm8211_write_bbp(dev, 0x09, 0x00);
1000                         adm8211_write_bbp(dev, 0x0a, 0x00);
1001                         adm8211_write_bbp(dev, 0x0b, 0x00);
1002                         adm8211_write_bbp(dev, 0x0c, 0x00);
1003                         adm8211_write_bbp(dev, 0x0f, 0xAA);
1004                         adm8211_write_bbp(dev, 0x10, 0x8c);
1005                         adm8211_write_bbp(dev, 0x11, 0x43);
1006                         adm8211_write_bbp(dev, 0x18, 0x40);
1007                         adm8211_write_bbp(dev, 0x20, 0x23);
1008                         adm8211_write_bbp(dev, 0x21, 0x02);
1009                         adm8211_write_bbp(dev, 0x22, 0x28);
1010                         adm8211_write_bbp(dev, 0x23, 0x30);
1011                         adm8211_write_bbp(dev, 0x24, 0x2d);
1012                         adm8211_write_bbp(dev, 0x28, 0x35);
1013                         adm8211_write_bbp(dev, 0x2a, 0x8c);
1014                         adm8211_write_bbp(dev, 0x2b, 0x81);
1015                         adm8211_write_bbp(dev, 0x2c, 0x44);
1016                         adm8211_write_bbp(dev, 0x2d, 0x0A);
1017                         adm8211_write_bbp(dev, 0x29, 0x40);
1018                         adm8211_write_bbp(dev, 0x60, 0x08);
1019                         adm8211_write_bbp(dev, 0x64, 0x01);
1020                         break;
1021
1022                 case ADM8211_MAX2820:
1023                         adm8211_write_bbp(dev, 0x00, 0x00);
1024                         adm8211_write_bbp(dev, 0x01, 0x00);
1025                         adm8211_write_bbp(dev, 0x02, 0x00);
1026                         adm8211_write_bbp(dev, 0x03, 0x00);
1027                         adm8211_write_bbp(dev, 0x06, 0x0f);
1028                         adm8211_write_bbp(dev, 0x09, 0x05);
1029                         adm8211_write_bbp(dev, 0x0a, 0x02);
1030                         adm8211_write_bbp(dev, 0x0b, 0x00);
1031                         adm8211_write_bbp(dev, 0x0c, 0x0f);
1032                         adm8211_write_bbp(dev, 0x0f, 0x55);
1033                         adm8211_write_bbp(dev, 0x10, 0x8d);
1034                         adm8211_write_bbp(dev, 0x11, 0x43);
1035                         adm8211_write_bbp(dev, 0x18, 0x4a);
1036                         adm8211_write_bbp(dev, 0x20, 0x20);
1037                         adm8211_write_bbp(dev, 0x21, 0x02);
1038                         adm8211_write_bbp(dev, 0x22, 0x23);
1039                         adm8211_write_bbp(dev, 0x23, 0x30);
1040                         adm8211_write_bbp(dev, 0x24, 0x2d);
1041                         adm8211_write_bbp(dev, 0x2a, 0x8c);
1042                         adm8211_write_bbp(dev, 0x2b, 0x81);
1043                         adm8211_write_bbp(dev, 0x2c, 0x44);
1044                         adm8211_write_bbp(dev, 0x29, 0x4a);
1045                         adm8211_write_bbp(dev, 0x60, 0x2b);
1046                         adm8211_write_bbp(dev, 0x64, 0x01);
1047                         break;
1048
1049                 case ADM8211_AL2210L:
1050                         adm8211_write_bbp(dev, 0x00, 0x00);
1051                         adm8211_write_bbp(dev, 0x01, 0x00);
1052                         adm8211_write_bbp(dev, 0x02, 0x00);
1053                         adm8211_write_bbp(dev, 0x03, 0x00);
1054                         adm8211_write_bbp(dev, 0x06, 0x0f);
1055                         adm8211_write_bbp(dev, 0x07, 0x05);
1056                         adm8211_write_bbp(dev, 0x08, 0x03);
1057                         adm8211_write_bbp(dev, 0x09, 0x00);
1058                         adm8211_write_bbp(dev, 0x0a, 0x00);
1059                         adm8211_write_bbp(dev, 0x0b, 0x00);
1060                         adm8211_write_bbp(dev, 0x0c, 0x10);
1061                         adm8211_write_bbp(dev, 0x0f, 0x55);
1062                         adm8211_write_bbp(dev, 0x10, 0x8d);
1063                         adm8211_write_bbp(dev, 0x11, 0x43);
1064                         adm8211_write_bbp(dev, 0x18, 0x4a);
1065                         adm8211_write_bbp(dev, 0x20, 0x20);
1066                         adm8211_write_bbp(dev, 0x21, 0x02);
1067                         adm8211_write_bbp(dev, 0x22, 0x23);
1068                         adm8211_write_bbp(dev, 0x23, 0x30);
1069                         adm8211_write_bbp(dev, 0x24, 0x2d);
1070                         adm8211_write_bbp(dev, 0x2a, 0xaa);
1071                         adm8211_write_bbp(dev, 0x2b, 0x81);
1072                         adm8211_write_bbp(dev, 0x2c, 0x44);
1073                         adm8211_write_bbp(dev, 0x29, 0xfa);
1074                         adm8211_write_bbp(dev, 0x60, 0x2d);
1075                         adm8211_write_bbp(dev, 0x64, 0x01);
1076                         break;
1077
1078                 case ADM8211_RFMD2948:
1079                         break;
1080
1081                 default:
1082                         printk(KERN_DEBUG "%s: unsupported transceiver %d\n",
1083                                wiphy_name(dev->wiphy), priv->transceiver_type);
1084                         break;
1085                 }
1086         } else
1087                 printk(KERN_DEBUG "%s: unsupported BBP %d\n",
1088                        wiphy_name(dev->wiphy), priv->bbp_type);
1089
1090         ADM8211_CSR_WRITE(SYNRF, 0);
1091
1092         /* Set RF CAL control source to MAC control */
1093         reg = ADM8211_CSR_READ(SYNCTL);
1094         reg |= ADM8211_SYNCTL_SELCAL;
1095         ADM8211_CSR_WRITE(SYNCTL, reg);
1096
1097         return 0;
1098 }
1099
1100 /* configures hw beacons/probe responses */
1101 static int adm8211_set_rate(struct ieee80211_hw *dev)
1102 {
1103         struct adm8211_priv *priv = dev->priv;
1104         u32 reg;
1105         int i = 0;
1106         u8 rate_buf[12] = {0};
1107
1108         /* write supported rates */
1109         if (priv->revid != ADM8211_REV_BA) {
1110                 rate_buf[0] = ARRAY_SIZE(adm8211_rates);
1111                 for (i = 0; i < ARRAY_SIZE(adm8211_rates); i++)
1112                         rate_buf[i + 1] = (adm8211_rates[i].rate / 5) | 0x80;
1113         } else {
1114                 /* workaround for rev BA specific bug */
1115                 rate_buf[0] = 0x04;
1116                 rate_buf[1] = 0x82;
1117                 rate_buf[2] = 0x04;
1118                 rate_buf[3] = 0x0b;
1119                 rate_buf[4] = 0x16;
1120         }
1121
1122         adm8211_write_sram_bytes(dev, ADM8211_SRAM_SUPP_RATE, rate_buf,
1123                                  ARRAY_SIZE(adm8211_rates) + 1);
1124
1125         reg = ADM8211_CSR_READ(PLCPHD) & 0x00FFFFFF; /* keep bits 0-23 */
1126         reg |= 1 << 15; /* short preamble */
1127         reg |= 110 << 24;
1128         ADM8211_CSR_WRITE(PLCPHD, reg);
1129
1130         /* MTMLT   = 512 TU (max TX MSDU lifetime)
1131          * BCNTSIG = plcp_signal (beacon, probe resp, and atim TX rate)
1132          * SRTYLIM = 224 (short retry limit, TX header value is default) */
1133         ADM8211_CSR_WRITE(TXLMT, (512 << 16) | (110 << 8) | (224 << 0));
1134
1135         return 0;
1136 }
1137
1138 static void adm8211_hw_init(struct ieee80211_hw *dev)
1139 {
1140         struct adm8211_priv *priv = dev->priv;
1141         u32 reg;
1142         u8 cline;
1143
1144         reg = le32_to_cpu(ADM8211_CSR_READ(PAR));
1145         reg |= ADM8211_PAR_MRLE | ADM8211_PAR_MRME;
1146         reg &= ~(ADM8211_PAR_BAR | ADM8211_PAR_CAL);
1147
1148         if (!pci_set_mwi(priv->pdev)) {
1149                 reg |= 0x1 << 24;
1150                 pci_read_config_byte(priv->pdev, PCI_CACHE_LINE_SIZE, &cline);
1151
1152                 switch (cline) {
1153                 case  0x8: reg |= (0x1 << 14);
1154                            break;
1155                 case 0x16: reg |= (0x2 << 14);
1156                            break;
1157                 case 0x32: reg |= (0x3 << 14);
1158                            break;
1159                   default: reg |= (0x0 << 14);
1160                            break;
1161                 }
1162         }
1163
1164         ADM8211_CSR_WRITE(PAR, reg);
1165
1166         reg = ADM8211_CSR_READ(CSR_TEST1);
1167         reg &= ~(0xF << 28);
1168         reg |= (1 << 28) | (1 << 31);
1169         ADM8211_CSR_WRITE(CSR_TEST1, reg);
1170
1171         /* lose link after 4 lost beacons */
1172         reg = (0x04 << 21) | ADM8211_WCSR_TSFTWE | ADM8211_WCSR_LSOE;
1173         ADM8211_CSR_WRITE(WCSR, reg);
1174
1175         /* Disable APM, enable receive FIFO threshold, and set drain receive
1176          * threshold to store-and-forward */
1177         reg = ADM8211_CSR_READ(CMDR);
1178         reg &= ~(ADM8211_CMDR_APM | ADM8211_CMDR_DRT);
1179         reg |= ADM8211_CMDR_RTE | ADM8211_CMDR_DRT_SF;
1180         ADM8211_CSR_WRITE(CMDR, reg);
1181
1182         adm8211_set_rate(dev);
1183
1184         /* 4-bit values:
1185          * PWR1UP   = 8 * 2 ms
1186          * PWR0PAPE = 8 us or 5 us
1187          * PWR1PAPE = 1 us or 3 us
1188          * PWR0TRSW = 5 us
1189          * PWR1TRSW = 12 us
1190          * PWR0PE2  = 13 us
1191          * PWR1PE2  = 1 us
1192          * PWR0TXPE = 8 or 6 */
1193         if (priv->revid < ADM8211_REV_CA)
1194                 ADM8211_CSR_WRITE(TOFS2, 0x8815cd18);
1195         else
1196                 ADM8211_CSR_WRITE(TOFS2, 0x8535cd16);
1197
1198         /* Enable store and forward for transmit */
1199         priv->nar = ADM8211_NAR_SF | ADM8211_NAR_PB;
1200         ADM8211_CSR_WRITE(NAR, priv->nar);
1201
1202         /* Reset RF */
1203         ADM8211_CSR_WRITE(SYNRF, ADM8211_SYNRF_RADIO);
1204         ADM8211_CSR_READ(SYNRF);
1205         msleep(10);
1206         ADM8211_CSR_WRITE(SYNRF, 0);
1207         ADM8211_CSR_READ(SYNRF);
1208         msleep(5);
1209
1210         /* Set CFP Max Duration to 0x10 TU */
1211         reg = ADM8211_CSR_READ(CFPP);
1212         reg &= ~(0xffff << 8);
1213         reg |= 0x0010 << 8;
1214         ADM8211_CSR_WRITE(CFPP, reg);
1215
1216         /* USCNT = 0x16 (number of system clocks, 22 MHz, in 1us
1217          * TUCNT = 0x3ff - Tu counter 1024 us  */
1218         ADM8211_CSR_WRITE(TOFS0, (0x16 << 24) | 0x3ff);
1219
1220         /* SLOT=20 us, SIFS=110 cycles of 22 MHz (5 us),
1221          * DIFS=50 us, EIFS=100 us */
1222         if (priv->revid < ADM8211_REV_CA)
1223                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (110 << 15) |
1224                                         (50 << 9)  | 100);
1225         else
1226                 ADM8211_CSR_WRITE(IFST, (20 << 23) | (24 << 15) |
1227                                         (50 << 9)  | 100);
1228
1229         /* PCNT = 1 (MAC idle time awake/sleep, unit S)
1230          * RMRD = 2346 * 8 + 1 us (max RX duration)  */
1231         ADM8211_CSR_WRITE(RMD, (1 << 16) | 18769);
1232
1233         /* MART=65535 us, MIRT=256 us, TSFTOFST=0 us */
1234         ADM8211_CSR_WRITE(RSPT, 0xffffff00);
1235
1236         /* Initialize BBP (and SYN) */
1237         adm8211_hw_init_bbp(dev);
1238
1239         /* make sure interrupts are off */
1240         ADM8211_CSR_WRITE(IER, 0);
1241
1242         /* ACK interrupts */
1243         ADM8211_CSR_WRITE(STSR, ADM8211_CSR_READ(STSR));
1244
1245         /* Setup WEP (turns it off for now) */
1246         reg = ADM8211_CSR_READ(MACTEST);
1247         reg &= ~(7 << 20);
1248         ADM8211_CSR_WRITE(MACTEST, reg);
1249
1250         reg = ADM8211_CSR_READ(WEPCTL);
1251         reg &= ~ADM8211_WEPCTL_WEPENABLE;
1252         reg |= ADM8211_WEPCTL_WEPRXBYP;
1253         ADM8211_CSR_WRITE(WEPCTL, reg);
1254
1255         /* Clear the missed-packet counter. */
1256         ADM8211_CSR_READ(LPC);
1257
1258         if (!priv->mac_addr)
1259                 return;
1260
1261         /* set mac address */
1262         ADM8211_CSR_WRITE(PAR0, *(u32 *)priv->mac_addr);
1263         ADM8211_CSR_WRITE(PAR1, *(u16 *)&priv->mac_addr[4]);
1264 }
1265
1266 static int adm8211_hw_reset(struct ieee80211_hw *dev)
1267 {
1268         struct adm8211_priv *priv = dev->priv;
1269         u32 reg, tmp;
1270         int timeout = 100;
1271
1272         /* Power-on issue */
1273         /* TODO: check if this is necessary */
1274         ADM8211_CSR_WRITE(FRCTL, 0);
1275
1276         /* Reset the chip */
1277         tmp = ADM8211_CSR_READ(PAR);
1278         ADM8211_CSR_WRITE(PAR, ADM8211_PAR_SWR);
1279
1280         while ((ADM8211_CSR_READ(PAR) & ADM8211_PAR_SWR) && timeout--)
1281                 msleep(50);
1282
1283         if (timeout <= 0)
1284                 return -ETIMEDOUT;
1285
1286         ADM8211_CSR_WRITE(PAR, tmp);
1287
1288         if (priv->revid == ADM8211_REV_BA &&
1289             (priv->transceiver_type == ADM8211_RFMD2958_RF3000_CONTROL_POWER ||
1290              priv->transceiver_type == ADM8211_RFMD2958)) {
1291                 reg = ADM8211_CSR_READ(CSR_TEST1);
1292                 reg |= (1 << 4) | (1 << 5);
1293                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1294         } else if (priv->revid == ADM8211_REV_CA) {
1295                 reg = ADM8211_CSR_READ(CSR_TEST1);
1296                 reg &= ~((1 << 4) | (1 << 5));
1297                 ADM8211_CSR_WRITE(CSR_TEST1, reg);
1298         }
1299
1300         ADM8211_CSR_WRITE(FRCTL, 0);
1301
1302         reg = ADM8211_CSR_READ(CSR_TEST0);
1303         reg |= ADM8211_CSR_TEST0_EPRLD; /* EEPROM Recall */
1304         ADM8211_CSR_WRITE(CSR_TEST0, reg);
1305
1306         adm8211_clear_sram(dev);
1307
1308         return 0;
1309 }
1310
1311 static u64 adm8211_get_tsft(struct ieee80211_hw *dev)
1312 {
1313         struct adm8211_priv *priv = dev->priv;
1314         u32 tsftl;
1315         u64 tsft;
1316
1317         tsftl = ADM8211_CSR_READ(TSFTL);
1318         tsft = ADM8211_CSR_READ(TSFTH);
1319         tsft <<= 32;
1320         tsft |= tsftl;
1321
1322         return tsft;
1323 }
1324
1325 static void adm8211_set_interval(struct ieee80211_hw *dev,
1326                                  unsigned short bi, unsigned short li)
1327 {
1328         struct adm8211_priv *priv = dev->priv;
1329         u32 reg;
1330
1331         /* BP (beacon interval) = data->beacon_interval
1332          * LI (listen interval) = data->listen_interval (in beacon intervals) */
1333         reg = (bi << 16) | li;
1334         ADM8211_CSR_WRITE(BPLI, reg);
1335 }
1336
1337 static void adm8211_set_bssid(struct ieee80211_hw *dev, u8 *bssid)
1338 {
1339         struct adm8211_priv *priv = dev->priv;
1340         u32 reg;
1341
1342         reg = bssid[0] | (bssid[1] << 8) | (bssid[2] << 16) | (bssid[3] << 24);
1343         ADM8211_CSR_WRITE(BSSID0, reg);
1344         reg = ADM8211_CSR_READ(ABDA1);
1345         reg &= 0x0000ffff;
1346         reg |= (bssid[4] << 16) | (bssid[5] << 24);
1347         ADM8211_CSR_WRITE(ABDA1, reg);
1348 }
1349
1350 static int adm8211_set_ssid(struct ieee80211_hw *dev, u8 *ssid, size_t ssid_len)
1351 {
1352         struct adm8211_priv *priv = dev->priv;
1353         u8 buf[36];
1354
1355         if (ssid_len > 32)
1356                 return -EINVAL;
1357
1358         memset(buf, 0, sizeof(buf));
1359         buf[0] = ssid_len;
1360         memcpy(buf + 1, ssid, ssid_len);
1361         adm8211_write_sram_bytes(dev, ADM8211_SRAM_SSID, buf, 33);
1362         /* TODO: configure beacon for adhoc? */
1363         return 0;
1364 }
1365
1366 static int adm8211_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1367 {
1368         struct adm8211_priv *priv = dev->priv;
1369
1370         if (conf->channel != priv->channel) {
1371                 priv->channel = conf->channel;
1372                 adm8211_rf_set_channel(dev, priv->channel);
1373         }
1374
1375         return 0;
1376 }
1377
1378 static int adm8211_config_interface(struct ieee80211_hw *dev, int if_id,
1379                                     struct ieee80211_if_conf *conf)
1380 {
1381         struct adm8211_priv *priv = dev->priv;
1382
1383         if (memcmp(conf->bssid, priv->bssid, ETH_ALEN)) {
1384                 adm8211_set_bssid(dev, conf->bssid);
1385                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1386         }
1387
1388         if (conf->ssid_len != priv->ssid_len ||
1389             memcmp(conf->ssid, priv->ssid, conf->ssid_len)) {
1390                 adm8211_set_ssid(dev, conf->ssid, conf->ssid_len);
1391                 priv->ssid_len = conf->ssid_len;
1392                 memcpy(priv->ssid, conf->ssid, conf->ssid_len);
1393         }
1394
1395         return 0;
1396 }
1397
1398 static int adm8211_add_interface(struct ieee80211_hw *dev,
1399                                  struct ieee80211_if_init_conf *conf)
1400 {
1401         struct adm8211_priv *priv = dev->priv;
1402         /* NOTE: using IEEE80211_IF_TYPE_MGMT to indicate no mode selected */
1403         if (priv->mode != IEEE80211_IF_TYPE_MGMT)
1404                 return -1;
1405
1406         switch (conf->type) {
1407         case IEEE80211_IF_TYPE_STA:
1408         case IEEE80211_IF_TYPE_MNTR:
1409                 priv->mode = conf->type;
1410                 break;
1411         default:
1412                 return -EOPNOTSUPP;
1413         }
1414
1415         priv->mac_addr = conf->mac_addr;
1416
1417         return 0;
1418 }
1419
1420 static void adm8211_remove_interface(struct ieee80211_hw *dev,
1421                                      struct ieee80211_if_init_conf *conf)
1422 {
1423         struct adm8211_priv *priv = dev->priv;
1424         priv->mode = IEEE80211_IF_TYPE_MGMT;
1425 }
1426
1427 static int adm8211_init_rings(struct ieee80211_hw *dev)
1428 {
1429         struct adm8211_priv *priv = dev->priv;
1430         struct adm8211_desc *desc = NULL;
1431         struct adm8211_rx_ring_info *rx_info;
1432         struct adm8211_tx_ring_info *tx_info;
1433         unsigned int i;
1434
1435         for (i = 0; i < priv->rx_ring_size; i++) {
1436                 desc = &priv->rx_ring[i];
1437                 desc->status = 0;
1438                 desc->length = cpu_to_le32(RX_PKT_SIZE);
1439                 priv->rx_buffers[i].skb = NULL;
1440         }
1441         /* Mark the end of RX ring; hw returns to base address after this
1442          * descriptor */
1443         desc->length |= cpu_to_le32(RDES1_CONTROL_RER);
1444
1445         for (i = 0; i < priv->rx_ring_size; i++) {
1446                 desc = &priv->rx_ring[i];
1447                 rx_info = &priv->rx_buffers[i];
1448
1449                 rx_info->skb = dev_alloc_skb(RX_PKT_SIZE);
1450                 if (rx_info->skb == NULL)
1451                         break;
1452                 rx_info->mapping = pci_map_single(priv->pdev,
1453                                                   skb_tail_pointer(rx_info->skb),
1454                                                   RX_PKT_SIZE,
1455                                                   PCI_DMA_FROMDEVICE);
1456                 desc->buffer1 = cpu_to_le32(rx_info->mapping);
1457                 desc->status = cpu_to_le32(RDES0_STATUS_OWN | RDES0_STATUS_SQL);
1458         }
1459
1460         /* Setup TX ring. TX buffers descriptors will be filled in as needed */
1461         for (i = 0; i < priv->tx_ring_size; i++) {
1462                 desc = &priv->tx_ring[i];
1463                 tx_info = &priv->tx_buffers[i];
1464
1465                 tx_info->skb = NULL;
1466                 tx_info->mapping = 0;
1467                 desc->status = 0;
1468         }
1469         desc->length = cpu_to_le32(TDES1_CONTROL_TER);
1470
1471         priv->cur_rx = priv->cur_tx = priv->dirty_tx = 0;
1472         ADM8211_CSR_WRITE(RDB, priv->rx_ring_dma);
1473         ADM8211_CSR_WRITE(TDBD, priv->tx_ring_dma);
1474
1475         return 0;
1476 }
1477
1478 static void adm8211_free_rings(struct ieee80211_hw *dev)
1479 {
1480         struct adm8211_priv *priv = dev->priv;
1481         unsigned int i;
1482
1483         for (i = 0; i < priv->rx_ring_size; i++) {
1484                 if (!priv->rx_buffers[i].skb)
1485                         continue;
1486
1487                 pci_unmap_single(
1488                         priv->pdev,
1489                         priv->rx_buffers[i].mapping,
1490                         RX_PKT_SIZE, PCI_DMA_FROMDEVICE);
1491
1492                 dev_kfree_skb(priv->rx_buffers[i].skb);
1493         }
1494
1495         for (i = 0; i < priv->tx_ring_size; i++) {
1496                 if (!priv->tx_buffers[i].skb)
1497                         continue;
1498
1499                 pci_unmap_single(priv->pdev,
1500                                  priv->tx_buffers[i].mapping,
1501                                  priv->tx_buffers[i].skb->len,
1502                                  PCI_DMA_TODEVICE);
1503
1504                 dev_kfree_skb(priv->tx_buffers[i].skb);
1505         }
1506 }
1507
1508 static int adm8211_open(struct ieee80211_hw *dev)
1509 {
1510         struct adm8211_priv *priv = dev->priv;
1511         int retval;
1512
1513         /* Power up MAC and RF chips */
1514         retval = adm8211_hw_reset(dev);
1515         if (retval) {
1516                 printk(KERN_ERR "%s: hardware reset failed\n",
1517                        wiphy_name(dev->wiphy));
1518                 goto fail;
1519         }
1520
1521         retval = adm8211_init_rings(dev);
1522         if (retval) {
1523                 printk(KERN_ERR "%s: failed to initialize rings\n",
1524                        wiphy_name(dev->wiphy));
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                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
1536                        wiphy_name(dev->wiphy));
1537                 goto fail;
1538         }
1539
1540         ADM8211_CSR_WRITE(IER, ADM8211_IER_NIE | ADM8211_IER_AIE |
1541                                ADM8211_IER_RCIE | ADM8211_IER_TCIE |
1542                                ADM8211_IER_TDUIE | ADM8211_IER_GPTIE);
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 int adm8211_stop(struct ieee80211_hw *dev)
1554 {
1555         struct adm8211_priv *priv = dev->priv;
1556
1557         priv->nar = 0;
1558         ADM8211_CSR_WRITE(NAR, 0);
1559         ADM8211_CSR_WRITE(IER, 0);
1560         ADM8211_CSR_READ(NAR);
1561
1562         free_irq(priv->pdev->irq, dev);
1563
1564         adm8211_free_rings(dev);
1565         return 0;
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 void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb,
1622                            u16 plcp_signal,
1623                            struct ieee80211_tx_control *control,
1624                            size_t hdrlen)
1625 {
1626         struct adm8211_priv *priv = dev->priv;
1627         unsigned long flags;
1628         dma_addr_t mapping;
1629         unsigned int entry;
1630         u32 flag;
1631
1632         mapping = pci_map_single(priv->pdev, skb->data, skb->len,
1633                                  PCI_DMA_TODEVICE);
1634
1635         spin_lock_irqsave(&priv->lock, flags);
1636
1637         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size / 2)
1638                 flag = TDES1_CONTROL_IC | TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1639         else
1640                 flag = TDES1_CONTROL_LS | TDES1_CONTROL_FS;
1641
1642         if (priv->cur_tx - priv->dirty_tx == priv->tx_ring_size - 2)
1643                 ieee80211_stop_queue(dev, 0);
1644
1645         entry = priv->cur_tx % priv->tx_ring_size;
1646
1647         priv->tx_buffers[entry].skb = skb;
1648         priv->tx_buffers[entry].mapping = mapping;
1649         memcpy(&priv->tx_buffers[entry].tx_control, control, sizeof(*control));
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
1669 /* Put adm8211_tx_hdr on skb and transmit */
1670 static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
1671                       struct ieee80211_tx_control *control)
1672 {
1673         struct adm8211_tx_hdr *txhdr;
1674         u16 fc;
1675         size_t payload_len, hdrlen;
1676         int plcp, dur, len, plcp_signal, short_preamble;
1677         struct ieee80211_hdr *hdr;
1678
1679         if (control->tx_rate < 0) {
1680                 short_preamble = 1;
1681                 plcp_signal = -control->tx_rate;
1682         } else {
1683                 short_preamble = 0;
1684                 plcp_signal = control->tx_rate;
1685         }
1686
1687         hdr = (struct ieee80211_hdr *)skb->data;
1688         fc = le16_to_cpu(hdr->frame_control) & ~IEEE80211_FCTL_PROTECTED;
1689         hdrlen = ieee80211_get_hdrlen(fc);
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 = (struct adm8211_tx_hdr *) 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         if (fc & IEEE80211_FCTL_PROTECTED)
1704                 len += 8;
1705
1706         txhdr->frag = cpu_to_le16(0x0FFF);
1707         adm8211_calc_durations(&dur, &plcp, payload_len,
1708                                len, plcp_signal, short_preamble);
1709         txhdr->plcp_frag_head_len = cpu_to_le16(plcp);
1710         txhdr->plcp_frag_tail_len = cpu_to_le16(plcp);
1711         txhdr->dur_frag_head = cpu_to_le16(dur);
1712         txhdr->dur_frag_tail = cpu_to_le16(dur);
1713
1714         txhdr->header_control = cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_EXTEND_HEADER);
1715
1716         if (short_preamble)
1717                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE);
1718
1719         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
1720                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS);
1721
1722         if (fc & IEEE80211_FCTL_PROTECTED)
1723                 txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_WEP_ENGINE);
1724
1725         txhdr->retry_limit = control->retry_limit;
1726
1727         adm8211_tx_raw(dev, skb, plcp_signal, control, hdrlen);
1728
1729         return NETDEV_TX_OK;
1730 }
1731
1732 static int adm8211_alloc_rings(struct ieee80211_hw *dev)
1733 {
1734         struct adm8211_priv *priv = dev->priv;
1735         unsigned int ring_size;
1736
1737         priv->rx_buffers = kmalloc(sizeof(*priv->rx_buffers) * priv->rx_ring_size +
1738                                    sizeof(*priv->tx_buffers) * priv->tx_ring_size, GFP_KERNEL);
1739         if (!priv->rx_buffers)
1740                 return -ENOMEM;
1741
1742         priv->tx_buffers = (void *)priv->rx_buffers +
1743                            sizeof(*priv->rx_buffers) * priv->rx_ring_size;
1744
1745         /* Allocate TX/RX descriptors */
1746         ring_size = sizeof(struct adm8211_desc) * priv->rx_ring_size +
1747                     sizeof(struct adm8211_desc) * priv->tx_ring_size;
1748         priv->rx_ring = pci_alloc_consistent(priv->pdev, ring_size,
1749                                              &priv->rx_ring_dma);
1750
1751         if (!priv->rx_ring) {
1752                 kfree(priv->rx_buffers);
1753                 priv->rx_buffers = NULL;
1754                 priv->tx_buffers = NULL;
1755                 return -ENOMEM;
1756         }
1757
1758         priv->tx_ring = (struct adm8211_desc *)(priv->rx_ring +
1759                                                 priv->rx_ring_size);
1760         priv->tx_ring_dma = priv->rx_ring_dma +
1761                             sizeof(struct adm8211_desc) * priv->rx_ring_size;
1762
1763         return 0;
1764 }
1765
1766 static const struct ieee80211_ops adm8211_ops = {
1767         .tx                     = adm8211_tx,
1768         .open                   = adm8211_open,
1769         .stop                   = adm8211_stop,
1770         .add_interface          = adm8211_add_interface,
1771         .remove_interface       = adm8211_remove_interface,
1772         .config                 = adm8211_config,
1773         .config_interface       = adm8211_config_interface,
1774         .set_multicast_list     = adm8211_set_rx_mode,
1775         .get_stats              = adm8211_get_stats,
1776         .get_tx_stats           = adm8211_get_tx_stats,
1777         .get_tsf                = adm8211_get_tsft
1778 };
1779
1780 static int __devinit adm8211_probe(struct pci_dev *pdev,
1781                                    const struct pci_device_id *id)
1782 {
1783         struct ieee80211_hw *dev;
1784         struct adm8211_priv *priv;
1785         unsigned long mem_addr, mem_len;
1786         unsigned int io_addr, io_len;
1787         int err;
1788         u32 reg;
1789         u8 perm_addr[ETH_ALEN];
1790
1791 #ifndef MODULE
1792         static unsigned int cardidx;
1793         if (!cardidx++)
1794                 printk(version);
1795 #endif
1796
1797         err = pci_enable_device(pdev);
1798         if (err) {
1799                 printk(KERN_ERR "%s (adm8211): Cannot enable new PCI device\n",
1800                        pci_name(pdev));
1801                 return err;
1802         }
1803
1804         io_addr = pci_resource_start(pdev, 0);
1805         io_len = pci_resource_len(pdev, 0);
1806         mem_addr = pci_resource_start(pdev, 1);
1807         mem_len = pci_resource_len(pdev, 1);
1808         if (io_len < 256 || mem_len < 1024) {
1809                 printk(KERN_ERR "%s (adm8211): Too short PCI resources\n",
1810                        pci_name(pdev));
1811                 goto err_disable_pdev;
1812         }
1813
1814
1815         /* check signature */
1816         pci_read_config_dword(pdev, 0x80 /* CR32 */, &reg);
1817         if (reg != ADM8211_SIG1 && reg != ADM8211_SIG2) {
1818                 printk(KERN_ERR "%s (adm8211): Invalid signature (0x%x)\n",
1819                        pci_name(pdev), reg);
1820                 goto err_disable_pdev;
1821         }
1822
1823         err = pci_request_regions(pdev, "adm8211");
1824         if (err) {
1825                 printk(KERN_ERR "%s (adm8211): Cannot obtain PCI resources\n",
1826                        pci_name(pdev));
1827                 return err; /* someone else grabbed it? don't disable it */
1828         }
1829
1830         if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) ||
1831             pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
1832                 printk(KERN_ERR "%s (adm8211): No suitable DMA available\n",
1833                        pci_name(pdev));
1834                 goto err_free_reg;
1835         }
1836
1837         pci_set_master(pdev);
1838
1839         dev = ieee80211_alloc_hw(sizeof(*priv), &adm8211_ops);
1840         if (!dev) {
1841                 printk(KERN_ERR "%s (adm8211): ieee80211 alloc failed\n",
1842                        pci_name(pdev));
1843                 err = -ENOMEM;
1844                 goto err_free_reg;
1845         }
1846         priv = dev->priv;
1847         priv->pdev = pdev;
1848
1849         spin_lock_init(&priv->lock);
1850
1851         SET_IEEE80211_DEV(dev, &pdev->dev);
1852
1853         pci_set_drvdata(pdev, dev);
1854
1855         priv->map = pci_iomap(pdev, 1, mem_len);
1856         if (!priv->map)
1857                 priv->map = pci_iomap(pdev, 0, io_len);
1858
1859         if (!priv->map) {
1860                 printk(KERN_ERR "%s (adm8211): Cannot map device memory\n",
1861                        pci_name(pdev));
1862                 goto err_free_dev;
1863         }
1864
1865         priv->rx_ring_size = rx_ring_size;
1866         priv->tx_ring_size = tx_ring_size;
1867
1868         if (adm8211_alloc_rings(dev)) {
1869                 printk(KERN_ERR "%s (adm8211): Cannot allocate TX/RX ring\n",
1870                        pci_name(pdev));
1871                 goto err_iounmap;
1872         }
1873
1874         pci_read_config_byte(pdev, PCI_CLASS_REVISION, &priv->revid);
1875
1876         *(u32 *)perm_addr = le32_to_cpu((__force __le32)ADM8211_CSR_READ(PAR0));
1877         *(u16 *)&perm_addr[4] =
1878                 le16_to_cpu((__force __le16)ADM8211_CSR_READ(PAR1) & 0xFFFF);
1879
1880         if (!is_valid_ether_addr(perm_addr)) {
1881                 printk(KERN_WARNING "%s (adm8211): Invalid hwaddr in EEPROM!\n",
1882                        pci_name(pdev));
1883                 random_ether_addr(perm_addr);
1884         }
1885         SET_IEEE80211_PERM_ADDR(dev, perm_addr);
1886
1887         dev->extra_tx_headroom = sizeof(struct adm8211_tx_hdr);
1888         dev->flags = IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED;
1889         /* IEEE80211_HW_RX_INCLUDES_FCS in promisc mode */
1890
1891         dev->channel_change_time = 1000;
1892         dev->max_rssi = 100;    /* FIXME: find better value */
1893
1894         priv->modes[0].mode = MODE_IEEE80211B;
1895         /* channel info filled in by adm8211_read_eeprom */
1896         memcpy(priv->rates, adm8211_rates, sizeof(adm8211_rates));
1897         priv->modes[0].num_rates = ARRAY_SIZE(adm8211_rates);
1898         priv->modes[0].rates = priv->rates;
1899
1900         dev->queues = 1; /* ADM8211C supports more, maybe ADM8211B too */
1901
1902         priv->retry_limit = 3;
1903         priv->ant_power = 0x40;
1904         priv->tx_power = 0x40;
1905         priv->lpf_cutoff = 0xFF;
1906         priv->lnags_threshold = 0xFF;
1907         priv->mode = IEEE80211_IF_TYPE_MGMT;
1908
1909         /* Power-on issue. EEPROM won't read correctly without */
1910         if (priv->revid >= ADM8211_REV_BA) {
1911                 ADM8211_CSR_WRITE(FRCTL, 0);
1912                 ADM8211_CSR_READ(FRCTL);
1913                 ADM8211_CSR_WRITE(FRCTL, 1);
1914                 ADM8211_CSR_READ(FRCTL);
1915                 msleep(100);
1916         }
1917
1918         err = adm8211_read_eeprom(dev);
1919         if (err) {
1920                 printk(KERN_ERR "%s (adm8211): Can't alloc eeprom buffer\n",
1921                        pci_name(pdev));
1922                 goto err_free_desc;
1923         }
1924
1925         priv->channel = priv->modes[0].channels[0].chan;
1926
1927         err = ieee80211_register_hwmode(dev, &priv->modes[0]);
1928         if (err) {
1929                 printk(KERN_ERR "%s (adm8211): Can't register hwmode\n",
1930                        pci_name(pdev));
1931                 goto err_free_desc;
1932         }
1933
1934         err = ieee80211_register_hw(dev);
1935         if (err) {
1936                 printk(KERN_ERR "%s (adm8211): Cannot register device\n",
1937                        pci_name(pdev));
1938                 goto err_free_desc;
1939         }
1940
1941         printk(KERN_INFO "%s: hwaddr " MAC_FMT ", Rev 0x%02x\n",
1942                wiphy_name(dev->wiphy), MAC_ARG(dev->wiphy->perm_addr),
1943                priv->revid);
1944
1945         return 0;
1946
1947  err_free_desc:
1948         pci_free_consistent(pdev,
1949                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1950                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1951                             priv->rx_ring, priv->rx_ring_dma);
1952         kfree(priv->rx_buffers);
1953
1954  err_iounmap:
1955         pci_iounmap(pdev, priv->map);
1956
1957  err_free_dev:
1958         pci_set_drvdata(pdev, NULL);
1959         ieee80211_free_hw(dev);
1960
1961  err_free_reg:
1962         pci_release_regions(pdev);
1963
1964  err_disable_pdev:
1965         pci_disable_device(pdev);
1966         return err;
1967 }
1968
1969
1970 static void __devexit adm8211_remove(struct pci_dev *pdev)
1971 {
1972         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1973         struct adm8211_priv *priv;
1974
1975         if (!dev)
1976                 return;
1977
1978         ieee80211_unregister_hw(dev);
1979
1980         priv = dev->priv;
1981
1982         pci_free_consistent(pdev,
1983                             sizeof(struct adm8211_desc) * priv->rx_ring_size +
1984                             sizeof(struct adm8211_desc) * priv->tx_ring_size,
1985                             priv->rx_ring, priv->rx_ring_dma);
1986
1987         kfree(priv->rx_buffers);
1988         kfree(priv->eeprom);
1989         pci_iounmap(pdev, priv->map);
1990         pci_release_regions(pdev);
1991         pci_disable_device(pdev);
1992         ieee80211_free_hw(dev);
1993 }
1994
1995
1996 #ifdef CONFIG_PM
1997 static int adm8211_suspend(struct pci_dev *pdev, pm_message_t state)
1998 {
1999         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
2000         struct adm8211_priv *priv = dev->priv;
2001
2002         if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
2003                 ieee80211_stop_queues(dev);
2004                 adm8211_stop(dev);
2005         }
2006
2007         pci_save_state(pdev);
2008         pci_set_power_state(pdev, pci_choose_state(pdev, state));
2009         return 0;
2010 }
2011
2012 static int adm8211_resume(struct pci_dev *pdev)
2013 {
2014         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
2015         struct adm8211_priv *priv = dev->priv;
2016
2017         pci_set_power_state(pdev, PCI_D0);
2018         pci_restore_state(pdev);
2019
2020         if (priv->mode != IEEE80211_IF_TYPE_MGMT) {
2021                 adm8211_open(dev);
2022                 ieee80211_start_queues(dev);
2023         }
2024
2025         return 0;
2026 }
2027 #endif /* CONFIG_PM */
2028
2029
2030 MODULE_DEVICE_TABLE(pci, adm8211_pci_id_table);
2031
2032 /* TODO: implement enable_wake */
2033 static struct pci_driver adm8211_driver = {
2034         .name           = "adm8211",
2035         .id_table       = adm8211_pci_id_table,
2036         .probe          = adm8211_probe,
2037         .remove         = __devexit_p(adm8211_remove),
2038 #ifdef CONFIG_PM
2039         .suspend        = adm8211_suspend,
2040         .resume         = adm8211_resume,
2041 #endif /* CONFIG_PM */
2042 };
2043
2044
2045
2046 static int __init adm8211_init(void)
2047 {
2048 #ifdef MODULE
2049         printk(version);
2050 #endif
2051
2052         return pci_register_driver(&adm8211_driver);
2053 }
2054
2055
2056 static void __exit adm8211_exit(void)
2057 {
2058         pci_unregister_driver(&adm8211_driver);
2059 }
2060
2061
2062 module_init(adm8211_init);
2063 module_exit(adm8211_exit);