git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/rtl8180_dev.c

   1
   2 /*
   3  * Linux device driver for RTL8180 / RTL8185
   4  *
   5  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
   6  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
   7  *
   8  * Based on the r8180 driver, which is:
   9  * Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, et al.
  10  *
  11  * Thanks to Realtek for their support!
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/eeprom_93cx6.h>
  23 #include <net/mac80211.h>
  24
  25 #include "rtl8180.h"
  26 #include "rtl8180_rtl8225.h"
  27 #include "rtl8180_sa2400.h"
  28 #include "rtl8180_max2820.h"
  29 #include "rtl8180_grf5101.h"
  30
  31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  32 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
  33 MODULE_DESCRIPTION("RTL8180 / RTL8185 PCI wireless driver");
  34 MODULE_LICENSE("GPL");
  35
  36 static struct pci_device_id rtl8180_table[] __devinitdata = {
  37         /* rtl8185 */
  38         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
  39         { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
  40         { PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },
  41
  42         /* rtl8180 */
  43         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
  44         { PCI_DEVICE(0x1799, 0x6001) },
  45         { PCI_DEVICE(0x1799, 0x6020) },
  46         { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
  47         { }
  48 };
  49
  50 MODULE_DEVICE_TABLE(pci, rtl8180_table);
  51
  52 static const struct ieee80211_rate rtl818x_rates[] = {
  53         { .bitrate = 10, .hw_value = 0, },
  54         { .bitrate = 20, .hw_value = 1, },
  55         { .bitrate = 55, .hw_value = 2, },
  56         { .bitrate = 110, .hw_value = 3, },
  57         { .bitrate = 60, .hw_value = 4, },
  58         { .bitrate = 90, .hw_value = 5, },
  59         { .bitrate = 120, .hw_value = 6, },
  60         { .bitrate = 180, .hw_value = 7, },
  61         { .bitrate = 240, .hw_value = 8, },
  62         { .bitrate = 360, .hw_value = 9, },
  63         { .bitrate = 480, .hw_value = 10, },
  64         { .bitrate = 540, .hw_value = 11, },
  65 };
  66
  67 static const struct ieee80211_channel rtl818x_channels[] = {
  68         { .center_freq = 2412 },
  69         { .center_freq = 2417 },
  70         { .center_freq = 2422 },
  71         { .center_freq = 2427 },
  72         { .center_freq = 2432 },
  73         { .center_freq = 2437 },
  74         { .center_freq = 2442 },
  75         { .center_freq = 2447 },
  76         { .center_freq = 2452 },
  77         { .center_freq = 2457 },
  78         { .center_freq = 2462 },
  79         { .center_freq = 2467 },
  80         { .center_freq = 2472 },
  81         { .center_freq = 2484 },
  82 };
  83
  84
  85
  86
  87 void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
  88 {
  89         struct rtl8180_priv *priv = dev->priv;
  90         int i = 10;
  91         u32 buf;
  92
  93         buf = (data << 8) | addr;
  94
  95         rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
  96         while (i--) {
  97                 rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
  98                 if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
  99                         return;
 100         }
 101 }
 102
 103 static void rtl8180_handle_rx(struct ieee80211_hw *dev)
 104 {
 105         struct rtl8180_priv *priv = dev->priv;
 106         unsigned int count = 32;
 107
 108         while (count--) {
 109                 struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
 110                 struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
 111                 u32 flags = le32_to_cpu(entry->flags);
 112
 113                 if (flags & RTL818X_RX_DESC_FLAG_OWN)
 114                         return;
 115
 116                 if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
 117                                       RTL818X_RX_DESC_FLAG_FOF |
 118                                       RTL818X_RX_DESC_FLAG_RX_ERR)))
 119                         goto done;
 120                 else {
 121                         u32 flags2 = le32_to_cpu(entry->flags2);
 122                         struct ieee80211_rx_status rx_status = {0};
 123                         struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);
 124
 125                         if (unlikely(!new_skb))
 126                                 goto done;
 127
 128                         pci_unmap_single(priv->pdev,
 129                                          *((dma_addr_t *)skb->cb),
 130                                          MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 131                         skb_put(skb, flags & 0xFFF);
 132
 133                         rx_status.antenna = (flags2 >> 15) & 1;
 134                         /* TODO: improve signal/rssi reporting */
 135                         rx_status.qual = flags2 & 0xFF;
 136                         rx_status.signal = (flags2 >> 8) & 0x7F;
 137                         /* XXX: is this correct? */
 138                         rx_status.rate_idx = (flags >> 20) & 0xF;
 139                         rx_status.freq = dev->conf.channel->center_freq;
 140                         rx_status.band = dev->conf.channel->band;
 141                         rx_status.mactime = le64_to_cpu(entry->tsft);
 142                         rx_status.flag |= RX_FLAG_TSFT;
 143                         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
 144                                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 145
 146                         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 147
 148                         skb = new_skb;
 149                         priv->rx_buf[priv->rx_idx] = skb;
 150                         *((dma_addr_t *) skb->cb) =
 151                                 pci_map_single(priv->pdev, skb_tail_pointer(skb),
 152                                                MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 153                 }
 154
 155         done:
 156                 entry->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
 157                 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
 158                                            MAX_RX_SIZE);
 159                 if (priv->rx_idx == 31)
 160                         entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
 161                 priv->rx_idx = (priv->rx_idx + 1) % 32;
 162         }
 163 }
 164
 165 static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
 166 {
 167         struct rtl8180_priv *priv = dev->priv;
 168         struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
 169
 170         while (skb_queue_len(&ring->queue)) {
 171                 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
 172                 struct sk_buff *skb;
 173                 struct ieee80211_tx_info *info;
 174                 u32 flags = le32_to_cpu(entry->flags);
 175
 176                 if (flags & RTL818X_TX_DESC_FLAG_OWN)
 177                         return;
 178
 179                 ring->idx = (ring->idx + 1) % ring->entries;
 180                 skb = __skb_dequeue(&ring->queue);
 181                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
 182                                  skb->len, PCI_DMA_TODEVICE);
 183
 184                 info = IEEE80211_SKB_CB(skb);
 185                 memset(&info->status, 0, sizeof(info->status));
 186
 187                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 188                         if (flags & RTL818X_TX_DESC_FLAG_TX_OK)
 189                                 info->flags |= IEEE80211_TX_STAT_ACK;
 190                         else
 191                                 info->status.excessive_retries = 1;
 192                 }
 193                 info->status.retry_count = flags & 0xFF;
 194
 195                 ieee80211_tx_status_irqsafe(dev, skb);
 196                 if (ring->entries - skb_queue_len(&ring->queue) == 2)
 197                         ieee80211_wake_queue(dev, prio);
 198         }
 199 }
 200
 201 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
 202 {
 203         struct ieee80211_hw *dev = dev_id;
 204         struct rtl8180_priv *priv = dev->priv;
 205         u16 reg;
 206
 207         spin_lock(&priv->lock);
 208         reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
 209         if (unlikely(reg == 0xFFFF)) {
 210                 spin_unlock(&priv->lock);
 211                 return IRQ_HANDLED;
 212         }
 213
 214         rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
 215
 216         if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
 217                 rtl8180_handle_tx(dev, 3);
 218
 219         if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
 220                 rtl8180_handle_tx(dev, 2);
 221
 222         if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
 223                 rtl8180_handle_tx(dev, 1);
 224
 225         if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
 226                 rtl8180_handle_tx(dev, 0);
 227
 228         if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
 229                 rtl8180_handle_rx(dev);
 230
 231         spin_unlock(&priv->lock);
 232
 233         return IRQ_HANDLED;
 234 }
 235
 236 static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 237 {
 238         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 239         struct rtl8180_priv *priv = dev->priv;
 240         struct rtl8180_tx_ring *ring;
 241         struct rtl8180_tx_desc *entry;
 242         unsigned long flags;
 243         unsigned int idx, prio;
 244         dma_addr_t mapping;
 245         u32 tx_flags;
 246         u16 plcp_len = 0;
 247         __le16 rts_duration = 0;
 248
 249         prio = skb_get_queue_mapping(skb);
 250         ring = &priv->tx_ring[prio];
 251
 252         mapping = pci_map_single(priv->pdev, skb->data,
 253                                  skb->len, PCI_DMA_TODEVICE);
 254
 255         tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
 256                    RTL818X_TX_DESC_FLAG_LS |
 257                    (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
 258                    skb->len;
 259
 260         if (priv->r8185)
 261                 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
 262                             RTL818X_TX_DESC_FLAG_NO_ENC;
 263
 264         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 265                 tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
 266                 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 267         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
 268                 tx_flags |= RTL818X_TX_DESC_FLAG_CTS;
 269                 tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
 270         }
 271
 272         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS)
 273                 rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
 274                                                       info);
 275
 276         if (!priv->r8185) {
 277                 unsigned int remainder;
 278
 279                 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
 280                                 (ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
 281                 remainder = (16 * (skb->len + 4)) %
 282                             ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
 283                 if (remainder > 0 && remainder <= 6)
 284                         plcp_len |= 1 << 15;
 285         }
 286
 287         spin_lock_irqsave(&priv->lock, flags);
 288         idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
 289         entry = &ring->desc[idx];
 290
 291         entry->rts_duration = rts_duration;
 292         entry->plcp_len = cpu_to_le16(plcp_len);
 293         entry->tx_buf = cpu_to_le32(mapping);
 294         entry->frame_len = cpu_to_le32(skb->len);
 295         entry->flags2 = info->control.retries[0].rate_idx >= 0 ?
 296                 ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
 297         entry->retry_limit = info->control.retry_limit;
 298         entry->flags = cpu_to_le32(tx_flags);
 299         __skb_queue_tail(&ring->queue, skb);
 300         if (ring->entries - skb_queue_len(&ring->queue) < 2)
 301                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
 302         spin_unlock_irqrestore(&priv->lock, flags);
 303
 304         rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
 305
 306         return 0;
 307 }
 308
 309 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
 310 {
 311         u8 reg;
 312
 313         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 314         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 315         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 316                  reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 317         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 318         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 319                  reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 320         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 321 }
 322
 323 static int rtl8180_init_hw(struct ieee80211_hw *dev)
 324 {
 325         struct rtl8180_priv *priv = dev->priv;
 326         u16 reg;
 327
 328         rtl818x_iowrite8(priv, &priv->map->CMD, 0);
 329         rtl818x_ioread8(priv, &priv->map->CMD);
 330         msleep(10);
 331
 332         /* reset */
 333         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 334         rtl818x_ioread8(priv, &priv->map->CMD);
 335
 336         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 337         reg &= (1 << 1);
 338         reg |= RTL818X_CMD_RESET;
 339         rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
 340         rtl818x_ioread8(priv, &priv->map->CMD);
 341         msleep(200);
 342
 343         /* check success of reset */
 344         if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
 345                 printk(KERN_ERR "%s: reset timeout!\n", wiphy_name(dev->wiphy));
 346                 return -ETIMEDOUT;
 347         }
 348
 349         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 350         rtl818x_ioread8(priv, &priv->map->CMD);
 351         msleep(200);
 352
 353         if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
 354                 /* For cardbus */
 355                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 356                 reg |= 1 << 1;
 357                 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 358                 reg = rtl818x_ioread16(priv, &priv->map->FEMR);
 359                 reg |= (1 << 15) | (1 << 14) | (1 << 4);
 360                 rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
 361         }
 362
 363         rtl818x_iowrite8(priv, &priv->map->MSR, 0);
 364
 365         if (!priv->r8185)
 366                 rtl8180_set_anaparam(priv, priv->anaparam);
 367
 368         rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
 369         rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
 370         rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
 371         rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
 372         rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
 373
 374         /* TODO: necessary? specs indicate not */
 375         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 376         reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 377         rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
 378         if (priv->r8185) {
 379                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 380                 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
 381         }
 382         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 383
 384         /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
 385
 386         /* TODO: turn off hw wep on rtl8180 */
 387
 388         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 389
 390         if (priv->r8185) {
 391                 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 392                 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 393                 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 394
 395                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 396
 397                 /* TODO: set ClkRun enable? necessary? */
 398                 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
 399                 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
 400                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 401                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 402                 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
 403                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 404         } else {
 405                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
 406                 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
 407
 408                 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
 409                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
 410         }
 411
 412         priv->rf->init(dev);
 413         if (priv->r8185)
 414                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 415         return 0;
 416 }
 417
 418 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
 419 {
 420         struct rtl8180_priv *priv = dev->priv;
 421         struct rtl8180_rx_desc *entry;
 422         int i;
 423
 424         priv->rx_ring = pci_alloc_consistent(priv->pdev,
 425                                              sizeof(*priv->rx_ring) * 32,
 426                                              &priv->rx_ring_dma);
 427
 428         if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
 429                 printk(KERN_ERR "%s: Cannot allocate RX ring\n",
 430                        wiphy_name(dev->wiphy));
 431                 return -ENOMEM;
 432         }
 433
 434         memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * 32);
 435         priv->rx_idx = 0;
 436
 437         for (i = 0; i < 32; i++) {
 438                 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
 439                 dma_addr_t *mapping;
 440                 entry = &priv->rx_ring[i];
 441                 if (!skb)
 442                         return 0;
 443
 444                 priv->rx_buf[i] = skb;
 445                 mapping = (dma_addr_t *)skb->cb;
 446                 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
 447                                           MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 448                 entry->rx_buf = cpu_to_le32(*mapping);
 449                 entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
 450                                            MAX_RX_SIZE);
 451         }
 452         entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
 453         return 0;
 454 }
 455
 456 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
 457 {
 458         struct rtl8180_priv *priv = dev->priv;
 459         int i;
 460
 461         for (i = 0; i < 32; i++) {
 462                 struct sk_buff *skb = priv->rx_buf[i];
 463                 if (!skb)
 464                         continue;
 465
 466                 pci_unmap_single(priv->pdev,
 467                                  *((dma_addr_t *)skb->cb),
 468                                  MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 469                 kfree_skb(skb);
 470         }
 471
 472         pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32,
 473                             priv->rx_ring, priv->rx_ring_dma);
 474         priv->rx_ring = NULL;
 475 }
 476
 477 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
 478                                 unsigned int prio, unsigned int entries)
 479 {
 480         struct rtl8180_priv *priv = dev->priv;
 481         struct rtl8180_tx_desc *ring;
 482         dma_addr_t dma;
 483         int i;
 484
 485         ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
 486         if (!ring || (unsigned long)ring & 0xFF) {
 487                 printk(KERN_ERR "%s: Cannot allocate TX ring (prio = %d)\n",
 488                        wiphy_name(dev->wiphy), prio);
 489                 return -ENOMEM;
 490         }
 491
 492         memset(ring, 0, sizeof(*ring)*entries);
 493         priv->tx_ring[prio].desc = ring;
 494         priv->tx_ring[prio].dma = dma;
 495         priv->tx_ring[prio].idx = 0;
 496         priv->tx_ring[prio].entries = entries;
 497         skb_queue_head_init(&priv->tx_ring[prio].queue);
 498
 499         for (i = 0; i < entries; i++)
 500                 ring[i].next_tx_desc =
 501                         cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
 502
 503         return 0;
 504 }
 505
 506 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
 507 {
 508         struct rtl8180_priv *priv = dev->priv;
 509         struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
 510
 511         while (skb_queue_len(&ring->queue)) {
 512                 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
 513                 struct sk_buff *skb = __skb_dequeue(&ring->queue);
 514
 515                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
 516                                  skb->len, PCI_DMA_TODEVICE);
 517                 kfree_skb(skb);
 518                 ring->idx = (ring->idx + 1) % ring->entries;
 519         }
 520
 521         pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
 522                             ring->desc, ring->dma);
 523         ring->desc = NULL;
 524 }
 525
 526 static int rtl8180_start(struct ieee80211_hw *dev)
 527 {
 528         struct rtl8180_priv *priv = dev->priv;
 529         int ret, i;
 530         u32 reg;
 531
 532         ret = rtl8180_init_rx_ring(dev);
 533         if (ret)
 534                 return ret;
 535
 536         for (i = 0; i < 4; i++)
 537                 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
 538                         goto err_free_rings;
 539
 540         ret = rtl8180_init_hw(dev);
 541         if (ret)
 542                 goto err_free_rings;
 543
 544         rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
 545         rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
 546         rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
 547         rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
 548         rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
 549
 550         ret = request_irq(priv->pdev->irq, &rtl8180_interrupt,
 551                           IRQF_SHARED, KBUILD_MODNAME, dev);
 552         if (ret) {
 553                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
 554                        wiphy_name(dev->wiphy));
 555                 goto err_free_rings;
 556         }
 557
 558         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 559
 560         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 561         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 562
 563         reg = RTL818X_RX_CONF_ONLYERLPKT |
 564               RTL818X_RX_CONF_RX_AUTORESETPHY |
 565               RTL818X_RX_CONF_MGMT |
 566               RTL818X_RX_CONF_DATA |
 567               (7 << 8 /* MAX RX DMA */) |
 568               RTL818X_RX_CONF_BROADCAST |
 569               RTL818X_RX_CONF_NICMAC;
 570
 571         if (priv->r8185)
 572                 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
 573         else {
 574                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
 575                         ? RTL818X_RX_CONF_CSDM1 : 0;
 576                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
 577                         ? RTL818X_RX_CONF_CSDM2 : 0;
 578         }
 579
 580         priv->rx_conf = reg;
 581         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 582
 583         if (priv->r8185) {
 584                 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 585                 reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 586                 reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 587                 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 588
 589                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 590                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 591                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 592                 reg |=  RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 593                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 594
 595                 /* disable early TX */
 596                 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
 597         }
 598
 599         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 600         reg |= (6 << 21 /* MAX TX DMA */) |
 601                RTL818X_TX_CONF_NO_ICV;
 602
 603         if (priv->r8185)
 604                 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
 605         else
 606                 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
 607
 608         /* different meaning, same value on both rtl8185 and rtl8180 */
 609         reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
 610
 611         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 612
 613         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 614         reg |= RTL818X_CMD_RX_ENABLE;
 615         reg |= RTL818X_CMD_TX_ENABLE;
 616         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 617
 618         priv->mode = NL80211_IFTYPE_MONITOR;
 619         return 0;
 620
 621  err_free_rings:
 622         rtl8180_free_rx_ring(dev);
 623         for (i = 0; i < 4; i++)
 624                 if (priv->tx_ring[i].desc)
 625                         rtl8180_free_tx_ring(dev, i);
 626
 627         return ret;
 628 }
 629
 630 static void rtl8180_stop(struct ieee80211_hw *dev)
 631 {
 632         struct rtl8180_priv *priv = dev->priv;
 633         u8 reg;
 634         int i;
 635
 636         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 637
 638         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 639
 640         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 641         reg &= ~RTL818X_CMD_TX_ENABLE;
 642         reg &= ~RTL818X_CMD_RX_ENABLE;
 643         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 644
 645         priv->rf->stop(dev);
 646
 647         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 648         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 649         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 650         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 651
 652         free_irq(priv->pdev->irq, dev);
 653
 654         rtl8180_free_rx_ring(dev);
 655         for (i = 0; i < 4; i++)
 656                 rtl8180_free_tx_ring(dev, i);
 657 }
 658
 659 static int rtl8180_add_interface(struct ieee80211_hw *dev,
 660                                  struct ieee80211_if_init_conf *conf)
 661 {
 662         struct rtl8180_priv *priv = dev->priv;
 663
 664         if (priv->mode != NL80211_IFTYPE_MONITOR)
 665                 return -EOPNOTSUPP;
 666
 667         switch (conf->type) {
 668         case NL80211_IFTYPE_STATION:
 669                 priv->mode = conf->type;
 670                 break;
 671         default:
 672                 return -EOPNOTSUPP;
 673         }
 674
 675         priv->vif = conf->vif;
 676
 677         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 678         rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
 679                           le32_to_cpu(*(__le32 *)conf->mac_addr));
 680         rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
 681                           le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
 682         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 683
 684         return 0;
 685 }
 686
 687 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
 688                                      struct ieee80211_if_init_conf *conf)
 689 {
 690         struct rtl8180_priv *priv = dev->priv;
 691         priv->mode = NL80211_IFTYPE_MONITOR;
 692         priv->vif = NULL;
 693 }
 694
 695 static int rtl8180_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 696 {
 697         struct rtl8180_priv *priv = dev->priv;
 698
 699         priv->rf->set_chan(dev, conf);
 700
 701         return 0;
 702 }
 703
 704 static int rtl8180_config_interface(struct ieee80211_hw *dev,
 705                                     struct ieee80211_vif *vif,
 706                                     struct ieee80211_if_conf *conf)
 707 {
 708         struct rtl8180_priv *priv = dev->priv;
 709         int i;
 710
 711         for (i = 0; i < ETH_ALEN; i++)
 712                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 713
 714         if (is_valid_ether_addr(conf->bssid))
 715                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 716         else
 717                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 718
 719         return 0;
 720 }
 721
 722 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
 723                                      unsigned int changed_flags,
 724                                      unsigned int *total_flags,
 725                                      int mc_count, struct dev_addr_list *mclist)
 726 {
 727         struct rtl8180_priv *priv = dev->priv;
 728
 729         if (changed_flags & FIF_FCSFAIL)
 730                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 731         if (changed_flags & FIF_CONTROL)
 732                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 733         if (changed_flags & FIF_OTHER_BSS)
 734                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 735         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 736                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 737         else
 738                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 739
 740         *total_flags = 0;
 741
 742         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 743                 *total_flags |= FIF_FCSFAIL;
 744         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 745                 *total_flags |= FIF_CONTROL;
 746         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 747                 *total_flags |= FIF_OTHER_BSS;
 748         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 749                 *total_flags |= FIF_ALLMULTI;
 750
 751         rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
 752 }
 753
 754 static const struct ieee80211_ops rtl8180_ops = {
 755         .tx                     = rtl8180_tx,
 756         .start                  = rtl8180_start,
 757         .stop                   = rtl8180_stop,
 758         .add_interface          = rtl8180_add_interface,
 759         .remove_interface       = rtl8180_remove_interface,
 760         .config                 = rtl8180_config,
 761         .config_interface       = rtl8180_config_interface,
 762         .configure_filter       = rtl8180_configure_filter,
 763 };
 764
 765 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 766 {
 767         struct ieee80211_hw *dev = eeprom->data;
 768         struct rtl8180_priv *priv = dev->priv;
 769         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 770
 771         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 772         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 773         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 774         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 775 }
 776
 777 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 778 {
 779         struct ieee80211_hw *dev = eeprom->data;
 780         struct rtl8180_priv *priv = dev->priv;
 781         u8 reg = 2 << 6;
 782
 783         if (eeprom->reg_data_in)
 784                 reg |= RTL818X_EEPROM_CMD_WRITE;
 785         if (eeprom->reg_data_out)
 786                 reg |= RTL818X_EEPROM_CMD_READ;
 787         if (eeprom->reg_data_clock)
 788                 reg |= RTL818X_EEPROM_CMD_CK;
 789         if (eeprom->reg_chip_select)
 790                 reg |= RTL818X_EEPROM_CMD_CS;
 791
 792         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 793         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 794         udelay(10);
 795 }
 796
 797 static int __devinit rtl8180_probe(struct pci_dev *pdev,
 798                                    const struct pci_device_id *id)
 799 {
 800         struct ieee80211_hw *dev;
 801         struct rtl8180_priv *priv;
 802         unsigned long mem_addr, mem_len;
 803         unsigned int io_addr, io_len;
 804         int err, i;
 805         struct eeprom_93cx6 eeprom;
 806         const char *chip_name, *rf_name = NULL;
 807         u32 reg;
 808         u16 eeprom_val;
 809         DECLARE_MAC_BUF(mac);
 810
 811         err = pci_enable_device(pdev);
 812         if (err) {
 813                 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
 814                        pci_name(pdev));
 815                 return err;
 816         }
 817
 818         err = pci_request_regions(pdev, KBUILD_MODNAME);
 819         if (err) {
 820                 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
 821                        pci_name(pdev));
 822                 return err;
 823         }
 824
 825         io_addr = pci_resource_start(pdev, 0);
 826         io_len = pci_resource_len(pdev, 0);
 827         mem_addr = pci_resource_start(pdev, 1);
 828         mem_len = pci_resource_len(pdev, 1);
 829
 830         if (mem_len < sizeof(struct rtl818x_csr) ||
 831             io_len < sizeof(struct rtl818x_csr)) {
 832                 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
 833                        pci_name(pdev));
 834                 err = -ENOMEM;
 835                 goto err_free_reg;
 836         }
 837
 838         if ((err = pci_set_dma_mask(pdev, 0xFFFFFF00ULL)) ||
 839             (err = pci_set_consistent_dma_mask(pdev, 0xFFFFFF00ULL))) {
 840                 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
 841                        pci_name(pdev));
 842                 goto err_free_reg;
 843         }
 844
 845         pci_set_master(pdev);
 846
 847         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
 848         if (!dev) {
 849                 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
 850                        pci_name(pdev));
 851                 err = -ENOMEM;
 852                 goto err_free_reg;
 853         }
 854
 855         priv = dev->priv;
 856         priv->pdev = pdev;
 857
 858         dev->max_altrates = 1;
 859         SET_IEEE80211_DEV(dev, &pdev->dev);
 860         pci_set_drvdata(pdev, dev);
 861
 862         priv->map = pci_iomap(pdev, 1, mem_len);
 863         if (!priv->map)
 864                 priv->map = pci_iomap(pdev, 0, io_len);
 865
 866         if (!priv->map) {
 867                 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
 868                        pci_name(pdev));
 869                 goto err_free_dev;
 870         }
 871
 872         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 873         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 874
 875         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 876         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 877
 878         priv->band.band = IEEE80211_BAND_2GHZ;
 879         priv->band.channels = priv->channels;
 880         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 881         priv->band.bitrates = priv->rates;
 882         priv->band.n_bitrates = 4;
 883         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 884
 885         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 886                      IEEE80211_HW_RX_INCLUDES_FCS |
 887                      IEEE80211_HW_SIGNAL_UNSPEC;
 888         dev->queues = 1;
 889         dev->max_signal = 65;
 890
 891         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 892         reg &= RTL818X_TX_CONF_HWVER_MASK;
 893         switch (reg) {
 894         case RTL818X_TX_CONF_R8180_ABCD:
 895                 chip_name = "RTL8180";
 896                 break;
 897         case RTL818X_TX_CONF_R8180_F:
 898                 chip_name = "RTL8180vF";
 899                 break;
 900         case RTL818X_TX_CONF_R8185_ABC:
 901                 chip_name = "RTL8185";
 902                 break;
 903         case RTL818X_TX_CONF_R8185_D:
 904                 chip_name = "RTL8185vD";
 905                 break;
 906         default:
 907                 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
 908                        pci_name(pdev), reg >> 25);
 909                 goto err_iounmap;
 910         }
 911
 912         priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
 913         if (priv->r8185) {
 914                 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 915                 pci_try_set_mwi(pdev);
 916         }
 917
 918         eeprom.data = dev;
 919         eeprom.register_read = rtl8180_eeprom_register_read;
 920         eeprom.register_write = rtl8180_eeprom_register_write;
 921         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 922                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 923         else
 924                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 925
 926         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
 927         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 928         udelay(10);
 929
 930         eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
 931         eeprom_val &= 0xFF;
 932         switch (eeprom_val) {
 933         case 1: rf_name = "Intersil";
 934                 break;
 935         case 2: rf_name = "RFMD";
 936                 break;
 937         case 3: priv->rf = &sa2400_rf_ops;
 938                 break;
 939         case 4: priv->rf = &max2820_rf_ops;
 940                 break;
 941         case 5: priv->rf = &grf5101_rf_ops;
 942                 break;
 943         case 9: priv->rf = rtl8180_detect_rf(dev);
 944                 break;
 945         case 10:
 946                 rf_name = "RTL8255";
 947                 break;
 948         default:
 949                 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
 950                        pci_name(pdev), eeprom_val);
 951                 goto err_iounmap;
 952         }
 953
 954         if (!priv->rf) {
 955                 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
 956                        pci_name(pdev), rf_name);
 957                 goto err_iounmap;
 958         }
 959
 960         eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
 961         priv->csthreshold = eeprom_val >> 8;
 962         if (!priv->r8185) {
 963                 __le32 anaparam;
 964                 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
 965                 priv->anaparam = le32_to_cpu(anaparam);
 966                 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
 967         }
 968
 969         eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)dev->wiphy->perm_addr, 3);
 970         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 971                 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
 972                        " randomly generated MAC addr\n", pci_name(pdev));
 973                 random_ether_addr(dev->wiphy->perm_addr);
 974         }
 975
 976         /* CCK TX power */
 977         for (i = 0; i < 14; i += 2) {
 978                 u16 txpwr;
 979                 eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr);
 980                 priv->channels[i].hw_value = txpwr & 0xFF;
 981                 priv->channels[i + 1].hw_value = txpwr >> 8;
 982         }
 983
 984         /* OFDM TX power */
 985         if (priv->r8185) {
 986                 for (i = 0; i < 14; i += 2) {
 987                         u16 txpwr;
 988                         eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
 989                         priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
 990                         priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
 991                 }
 992         }
 993
 994         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 995
 996         spin_lock_init(&priv->lock);
 997
 998         err = ieee80211_register_hw(dev);
 999         if (err) {
1000                 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1001                        pci_name(pdev));
1002                 goto err_iounmap;
1003         }
1004
1005         printk(KERN_INFO "%s: hwaddr %s, %s + %s\n",
1006                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
1007                chip_name, priv->rf->name);
1008
1009         return 0;
1010
1011  err_iounmap:
1012         iounmap(priv->map);
1013
1014  err_free_dev:
1015         pci_set_drvdata(pdev, NULL);
1016         ieee80211_free_hw(dev);
1017
1018  err_free_reg:
1019         pci_release_regions(pdev);
1020         pci_disable_device(pdev);
1021         return err;
1022 }
1023
1024 static void __devexit rtl8180_remove(struct pci_dev *pdev)
1025 {
1026         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1027         struct rtl8180_priv *priv;
1028
1029         if (!dev)
1030                 return;
1031
1032         ieee80211_unregister_hw(dev);
1033
1034         priv = dev->priv;
1035
1036         pci_iounmap(pdev, priv->map);
1037         pci_release_regions(pdev);
1038         pci_disable_device(pdev);
1039         ieee80211_free_hw(dev);
1040 }
1041
1042 #ifdef CONFIG_PM
1043 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1044 {
1045         pci_save_state(pdev);
1046         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1047         return 0;
1048 }
1049
1050 static int rtl8180_resume(struct pci_dev *pdev)
1051 {
1052         pci_set_power_state(pdev, PCI_D0);
1053         pci_restore_state(pdev);
1054         return 0;
1055 }
1056
1057 #endif /* CONFIG_PM */
1058
1059 static struct pci_driver rtl8180_driver = {
1060         .name           = KBUILD_MODNAME,
1061         .id_table       = rtl8180_table,
1062         .probe          = rtl8180_probe,
1063         .remove         = __devexit_p(rtl8180_remove),
1064 #ifdef CONFIG_PM
1065         .suspend        = rtl8180_suspend,
1066         .resume         = rtl8180_resume,
1067 #endif /* CONFIG_PM */
1068 };
1069
1070 static int __init rtl8180_init(void)
1071 {
1072         return pci_register_driver(&rtl8180_driver);
1073 }
1074
1075 static void __exit rtl8180_exit(void)
1076 {
1077         pci_unregister_driver(&rtl8180_driver);
1078 }
1079
1080 module_init(rtl8180_init);
1081 module_exit(rtl8180_exit);