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 & RTL8180_RX_DESC_FLAG_OWN)
 114                         return;
 115
 116                 if (unlikely(flags & (RTL8180_RX_DESC_FLAG_DMA_FAIL |
 117                                       RTL8180_RX_DESC_FLAG_FOF |
 118                                       RTL8180_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.signal = flags2 & 0xFF;
 136                         rx_status.ssi = (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 & RTL8180_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(RTL8180_RX_DESC_FLAG_OWN |
 158                                            MAX_RX_SIZE);
 159                 if (priv->rx_idx == 31)
 160                         entry->flags |= cpu_to_le32(RTL8180_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_status status;
 174                 struct ieee80211_tx_control *control;
 175                 u32 flags = le32_to_cpu(entry->flags);
 176
 177                 if (flags & RTL8180_TX_DESC_FLAG_OWN)
 178                         return;
 179
 180                 memset(&status, 0, sizeof(status));
 181
 182                 ring->idx = (ring->idx + 1) % ring->entries;
 183                 skb = __skb_dequeue(&ring->queue);
 184                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
 185                                  skb->len, PCI_DMA_TODEVICE);
 186
 187                 control = *((struct ieee80211_tx_control **)skb->cb);
 188                 if (control)
 189                         memcpy(&status.control, control, sizeof(*control));
 190                 kfree(control);
 191
 192                 if (!(status.control.flags & IEEE80211_TXCTL_NO_ACK)) {
 193                         if (flags & RTL8180_TX_DESC_FLAG_TX_OK)
 194                                 status.flags = IEEE80211_TX_STATUS_ACK;
 195                         else
 196                                 status.excessive_retries = 1;
 197                 }
 198                 status.retry_count = flags & 0xFF;
 199
 200                 ieee80211_tx_status_irqsafe(dev, skb, &status);
 201                 if (ring->entries - skb_queue_len(&ring->queue) == 2)
 202                         ieee80211_wake_queue(dev, prio);
 203         }
 204 }
 205
 206 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
 207 {
 208         struct ieee80211_hw *dev = dev_id;
 209         struct rtl8180_priv *priv = dev->priv;
 210         u16 reg;
 211
 212         spin_lock(&priv->lock);
 213         reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
 214         if (unlikely(reg == 0xFFFF)) {
 215                 spin_unlock(&priv->lock);
 216                 return IRQ_HANDLED;
 217         }
 218
 219         rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
 220
 221         if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
 222                 rtl8180_handle_tx(dev, 3);
 223
 224         if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
 225                 rtl8180_handle_tx(dev, 2);
 226
 227         if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
 228                 rtl8180_handle_tx(dev, 1);
 229
 230         if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
 231                 rtl8180_handle_tx(dev, 0);
 232
 233         if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
 234                 rtl8180_handle_rx(dev);
 235
 236         spin_unlock(&priv->lock);
 237
 238         return IRQ_HANDLED;
 239 }
 240
 241 static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
 242                       struct ieee80211_tx_control *control)
 243 {
 244         struct rtl8180_priv *priv = dev->priv;
 245         struct rtl8180_tx_ring *ring;
 246         struct rtl8180_tx_desc *entry;
 247         unsigned long flags;
 248         unsigned int idx, prio;
 249         dma_addr_t mapping;
 250         u32 tx_flags;
 251         u16 plcp_len = 0;
 252         __le16 rts_duration = 0;
 253
 254         prio = control->queue;
 255         ring = &priv->tx_ring[prio];
 256
 257         mapping = pci_map_single(priv->pdev, skb->data,
 258                                  skb->len, PCI_DMA_TODEVICE);
 259
 260         BUG_ON(!control->tx_rate);
 261
 262         tx_flags = RTL8180_TX_DESC_FLAG_OWN | RTL8180_TX_DESC_FLAG_FS |
 263                    RTL8180_TX_DESC_FLAG_LS |
 264                    (control->tx_rate->hw_value << 24) | skb->len;
 265
 266         if (priv->r8185)
 267                 tx_flags |= RTL8180_TX_DESC_FLAG_DMA |
 268                             RTL8180_TX_DESC_FLAG_NO_ENC;
 269
 270         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
 271                 BUG_ON(!control->rts_cts_rate);
 272                 tx_flags |= RTL8180_TX_DESC_FLAG_RTS;
 273                 tx_flags |= control->rts_cts_rate->hw_value << 19;
 274         } else if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) {
 275                 BUG_ON(!control->rts_cts_rate);
 276                 tx_flags |= RTL8180_TX_DESC_FLAG_CTS;
 277                 tx_flags |= control->rts_cts_rate->hw_value << 19;
 278         }
 279
 280         *((struct ieee80211_tx_control **) skb->cb) =
 281                 kmemdup(control, sizeof(*control), GFP_ATOMIC);
 282
 283         if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
 284                 rts_duration = ieee80211_rts_duration(dev, priv->vif, skb->len,
 285                                                       control);
 286
 287         if (!priv->r8185) {
 288                 unsigned int remainder;
 289
 290                 plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
 291                                         (control->tx_rate->bitrate * 2) / 10);
 292                 remainder = (16 * (skb->len + 4)) %
 293                             ((control->tx_rate->bitrate * 2) / 10);
 294                 if (remainder > 0 && remainder <= 6)
 295                         plcp_len |= 1 << 15;
 296         }
 297
 298         spin_lock_irqsave(&priv->lock, flags);
 299         idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
 300         entry = &ring->desc[idx];
 301
 302         entry->rts_duration = rts_duration;
 303         entry->plcp_len = cpu_to_le16(plcp_len);
 304         entry->tx_buf = cpu_to_le32(mapping);
 305         entry->frame_len = cpu_to_le32(skb->len);
 306         entry->flags2 = control->alt_retry_rate != NULL ?
 307                         control->alt_retry_rate->bitrate << 4 : 0;
 308         entry->retry_limit = control->retry_limit;
 309         entry->flags = cpu_to_le32(tx_flags);
 310         __skb_queue_tail(&ring->queue, skb);
 311         if (ring->entries - skb_queue_len(&ring->queue) < 2)
 312                 ieee80211_stop_queue(dev, control->queue);
 313         spin_unlock_irqrestore(&priv->lock, flags);
 314
 315         rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
 316
 317         return 0;
 318 }
 319
 320 void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
 321 {
 322         u8 reg;
 323
 324         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 325         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 326         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 327                  reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
 328         rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 329         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
 330                  reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
 331         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 332 }
 333
 334 static int rtl8180_init_hw(struct ieee80211_hw *dev)
 335 {
 336         struct rtl8180_priv *priv = dev->priv;
 337         u16 reg;
 338
 339         rtl818x_iowrite8(priv, &priv->map->CMD, 0);
 340         rtl818x_ioread8(priv, &priv->map->CMD);
 341         msleep(10);
 342
 343         /* reset */
 344         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 345         rtl818x_ioread8(priv, &priv->map->CMD);
 346
 347         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 348         reg &= (1 << 1);
 349         reg |= RTL818X_CMD_RESET;
 350         rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
 351         rtl818x_ioread8(priv, &priv->map->CMD);
 352         msleep(200);
 353
 354         /* check success of reset */
 355         if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
 356                 printk(KERN_ERR "%s: reset timeout!\n", wiphy_name(dev->wiphy));
 357                 return -ETIMEDOUT;
 358         }
 359
 360         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
 361         rtl818x_ioread8(priv, &priv->map->CMD);
 362         msleep(200);
 363
 364         if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
 365                 /* For cardbus */
 366                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 367                 reg |= 1 << 1;
 368                 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 369                 reg = rtl818x_ioread16(priv, &priv->map->FEMR);
 370                 reg |= (1 << 15) | (1 << 14) | (1 << 4);
 371                 rtl818x_iowrite16(priv, &priv->map->FEMR, reg);
 372         }
 373
 374         rtl818x_iowrite8(priv, &priv->map->MSR, 0);
 375
 376         if (!priv->r8185)
 377                 rtl8180_set_anaparam(priv, priv->anaparam);
 378
 379         rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
 380         rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
 381         rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
 382         rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
 383         rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
 384
 385         /* TODO: necessary? specs indicate not */
 386         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 387         reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 388         rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
 389         if (priv->r8185) {
 390                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
 391                 rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
 392         }
 393         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 394
 395         /* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */
 396
 397         /* TODO: turn off hw wep on rtl8180 */
 398
 399         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
 400
 401         if (priv->r8185) {
 402                 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
 403                 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
 404                 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
 405
 406                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 407
 408                 /* TODO: set ClkRun enable? necessary? */
 409                 reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
 410                 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
 411                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 412                 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
 413                 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
 414                 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 415         } else {
 416                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x1);
 417                 rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);
 418
 419                 rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
 420                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
 421         }
 422
 423         priv->rf->init(dev);
 424         if (priv->r8185)
 425                 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
 426         return 0;
 427 }
 428
 429 static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
 430 {
 431         struct rtl8180_priv *priv = dev->priv;
 432         struct rtl8180_rx_desc *entry;
 433         int i;
 434
 435         priv->rx_ring = pci_alloc_consistent(priv->pdev,
 436                                              sizeof(*priv->rx_ring) * 32,
 437                                              &priv->rx_ring_dma);
 438
 439         if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
 440                 printk(KERN_ERR "%s: Cannot allocate RX ring\n",
 441                        wiphy_name(dev->wiphy));
 442                 return -ENOMEM;
 443         }
 444
 445         memset(priv->rx_ring, 0, sizeof(*priv->rx_ring) * 32);
 446         priv->rx_idx = 0;
 447
 448         for (i = 0; i < 32; i++) {
 449                 struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
 450                 dma_addr_t *mapping;
 451                 entry = &priv->rx_ring[i];
 452                 if (!skb)
 453                         return 0;
 454
 455                 priv->rx_buf[i] = skb;
 456                 mapping = (dma_addr_t *)skb->cb;
 457                 *mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
 458                                           MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 459                 entry->rx_buf = cpu_to_le32(*mapping);
 460                 entry->flags = cpu_to_le32(RTL8180_RX_DESC_FLAG_OWN |
 461                                            MAX_RX_SIZE);
 462         }
 463         entry->flags |= cpu_to_le32(RTL8180_RX_DESC_FLAG_EOR);
 464         return 0;
 465 }
 466
 467 static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
 468 {
 469         struct rtl8180_priv *priv = dev->priv;
 470         int i;
 471
 472         for (i = 0; i < 32; i++) {
 473                 struct sk_buff *skb = priv->rx_buf[i];
 474                 if (!skb)
 475                         continue;
 476
 477                 pci_unmap_single(priv->pdev,
 478                                  *((dma_addr_t *)skb->cb),
 479                                  MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
 480                 kfree_skb(skb);
 481         }
 482
 483         pci_free_consistent(priv->pdev, sizeof(*priv->rx_ring) * 32,
 484                             priv->rx_ring, priv->rx_ring_dma);
 485         priv->rx_ring = NULL;
 486 }
 487
 488 static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
 489                                 unsigned int prio, unsigned int entries)
 490 {
 491         struct rtl8180_priv *priv = dev->priv;
 492         struct rtl8180_tx_desc *ring;
 493         dma_addr_t dma;
 494         int i;
 495
 496         ring = pci_alloc_consistent(priv->pdev, sizeof(*ring) * entries, &dma);
 497         if (!ring || (unsigned long)ring & 0xFF) {
 498                 printk(KERN_ERR "%s: Cannot allocate TX ring (prio = %d)\n",
 499                        wiphy_name(dev->wiphy), prio);
 500                 return -ENOMEM;
 501         }
 502
 503         memset(ring, 0, sizeof(*ring)*entries);
 504         priv->tx_ring[prio].desc = ring;
 505         priv->tx_ring[prio].dma = dma;
 506         priv->tx_ring[prio].idx = 0;
 507         priv->tx_ring[prio].entries = entries;
 508         skb_queue_head_init(&priv->tx_ring[prio].queue);
 509
 510         for (i = 0; i < entries; i++)
 511                 ring[i].next_tx_desc =
 512                         cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));
 513
 514         return 0;
 515 }
 516
 517 static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
 518 {
 519         struct rtl8180_priv *priv = dev->priv;
 520         struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
 521
 522         while (skb_queue_len(&ring->queue)) {
 523                 struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
 524                 struct sk_buff *skb = __skb_dequeue(&ring->queue);
 525
 526                 pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
 527                                  skb->len, PCI_DMA_TODEVICE);
 528                 kfree(*((struct ieee80211_tx_control **) skb->cb));
 529                 kfree_skb(skb);
 530                 ring->idx = (ring->idx + 1) % ring->entries;
 531         }
 532
 533         pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
 534                             ring->desc, ring->dma);
 535         ring->desc = NULL;
 536 }
 537
 538 static int rtl8180_start(struct ieee80211_hw *dev)
 539 {
 540         struct rtl8180_priv *priv = dev->priv;
 541         int ret, i;
 542         u32 reg;
 543
 544         ret = rtl8180_init_rx_ring(dev);
 545         if (ret)
 546                 return ret;
 547
 548         for (i = 0; i < 4; i++)
 549                 if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
 550                         goto err_free_rings;
 551
 552         ret = rtl8180_init_hw(dev);
 553         if (ret)
 554                 goto err_free_rings;
 555
 556         rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
 557         rtl818x_iowrite32(priv, &priv->map->TBDA, priv->tx_ring[3].dma);
 558         rtl818x_iowrite32(priv, &priv->map->THPDA, priv->tx_ring[2].dma);
 559         rtl818x_iowrite32(priv, &priv->map->TNPDA, priv->tx_ring[1].dma);
 560         rtl818x_iowrite32(priv, &priv->map->TLPDA, priv->tx_ring[0].dma);
 561
 562         ret = request_irq(priv->pdev->irq, &rtl8180_interrupt,
 563                           IRQF_SHARED, KBUILD_MODNAME, dev);
 564         if (ret) {
 565                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
 566                        wiphy_name(dev->wiphy));
 567                 goto err_free_rings;
 568         }
 569
 570         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
 571
 572         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
 573         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
 574
 575         reg = RTL818X_RX_CONF_ONLYERLPKT |
 576               RTL818X_RX_CONF_RX_AUTORESETPHY |
 577               RTL818X_RX_CONF_MGMT |
 578               RTL818X_RX_CONF_DATA |
 579               (7 << 8 /* MAX RX DMA */) |
 580               RTL818X_RX_CONF_BROADCAST |
 581               RTL818X_RX_CONF_NICMAC;
 582
 583         if (priv->r8185)
 584                 reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
 585         else {
 586                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
 587                         ? RTL818X_RX_CONF_CSDM1 : 0;
 588                 reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
 589                         ? RTL818X_RX_CONF_CSDM2 : 0;
 590         }
 591
 592         priv->rx_conf = reg;
 593         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
 594
 595         if (priv->r8185) {
 596                 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
 597                 reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
 598                 reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
 599                 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
 600
 601                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
 602                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
 603                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
 604                 reg |=  RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
 605                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 606
 607                 /* disable early TX */
 608                 rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
 609         }
 610
 611         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 612         reg |= (6 << 21 /* MAX TX DMA */) |
 613                RTL818X_TX_CONF_NO_ICV;
 614
 615         if (priv->r8185)
 616                 reg &= ~RTL818X_TX_CONF_PROBE_DTS;
 617         else
 618                 reg &= ~RTL818X_TX_CONF_HW_SEQNUM;
 619
 620         /* different meaning, same value on both rtl8185 and rtl8180 */
 621         reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;
 622
 623         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
 624
 625         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 626         reg |= RTL818X_CMD_RX_ENABLE;
 627         reg |= RTL818X_CMD_TX_ENABLE;
 628         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 629
 630         priv->mode = IEEE80211_IF_TYPE_MNTR;
 631         return 0;
 632
 633  err_free_rings:
 634         rtl8180_free_rx_ring(dev);
 635         for (i = 0; i < 4; i++)
 636                 if (priv->tx_ring[i].desc)
 637                         rtl8180_free_tx_ring(dev, i);
 638
 639         return ret;
 640 }
 641
 642 static void rtl8180_stop(struct ieee80211_hw *dev)
 643 {
 644         struct rtl8180_priv *priv = dev->priv;
 645         u8 reg;
 646         int i;
 647
 648         priv->mode = IEEE80211_IF_TYPE_INVALID;
 649
 650         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
 651
 652         reg = rtl818x_ioread8(priv, &priv->map->CMD);
 653         reg &= ~RTL818X_CMD_TX_ENABLE;
 654         reg &= ~RTL818X_CMD_RX_ENABLE;
 655         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
 656
 657         priv->rf->stop(dev);
 658
 659         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 660         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
 661         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
 662         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 663
 664         free_irq(priv->pdev->irq, dev);
 665
 666         rtl8180_free_rx_ring(dev);
 667         for (i = 0; i < 4; i++)
 668                 rtl8180_free_tx_ring(dev, i);
 669 }
 670
 671 static int rtl8180_add_interface(struct ieee80211_hw *dev,
 672                                  struct ieee80211_if_init_conf *conf)
 673 {
 674         struct rtl8180_priv *priv = dev->priv;
 675
 676         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
 677                 return -EOPNOTSUPP;
 678
 679         switch (conf->type) {
 680         case IEEE80211_IF_TYPE_STA:
 681                 priv->mode = conf->type;
 682                 break;
 683         default:
 684                 return -EOPNOTSUPP;
 685         }
 686
 687         priv->vif = conf->vif;
 688
 689         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
 690         rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
 691                           le32_to_cpu(*(__le32 *)conf->mac_addr));
 692         rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
 693                           le16_to_cpu(*(__le16 *)(conf->mac_addr + 4)));
 694         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
 695
 696         return 0;
 697 }
 698
 699 static void rtl8180_remove_interface(struct ieee80211_hw *dev,
 700                                      struct ieee80211_if_init_conf *conf)
 701 {
 702         struct rtl8180_priv *priv = dev->priv;
 703         priv->mode = IEEE80211_IF_TYPE_MNTR;
 704         priv->vif = NULL;
 705 }
 706
 707 static int rtl8180_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 708 {
 709         struct rtl8180_priv *priv = dev->priv;
 710
 711         priv->rf->set_chan(dev, conf);
 712
 713         return 0;
 714 }
 715
 716 static int rtl8180_config_interface(struct ieee80211_hw *dev,
 717                                     struct ieee80211_vif *vif,
 718                                     struct ieee80211_if_conf *conf)
 719 {
 720         struct rtl8180_priv *priv = dev->priv;
 721         int i;
 722
 723         for (i = 0; i < ETH_ALEN; i++)
 724                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 725
 726         if (is_valid_ether_addr(conf->bssid))
 727                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 728         else
 729                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 730
 731         return 0;
 732 }
 733
 734 static void rtl8180_configure_filter(struct ieee80211_hw *dev,
 735                                      unsigned int changed_flags,
 736                                      unsigned int *total_flags,
 737                                      int mc_count, struct dev_addr_list *mclist)
 738 {
 739         struct rtl8180_priv *priv = dev->priv;
 740
 741         if (changed_flags & FIF_FCSFAIL)
 742                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
 743         if (changed_flags & FIF_CONTROL)
 744                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
 745         if (changed_flags & FIF_OTHER_BSS)
 746                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
 747         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
 748                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
 749         else
 750                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
 751
 752         *total_flags = 0;
 753
 754         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
 755                 *total_flags |= FIF_FCSFAIL;
 756         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
 757                 *total_flags |= FIF_CONTROL;
 758         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
 759                 *total_flags |= FIF_OTHER_BSS;
 760         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
 761                 *total_flags |= FIF_ALLMULTI;
 762
 763         rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
 764 }
 765
 766 static const struct ieee80211_ops rtl8180_ops = {
 767         .tx                     = rtl8180_tx,
 768         .start                  = rtl8180_start,
 769         .stop                   = rtl8180_stop,
 770         .add_interface          = rtl8180_add_interface,
 771         .remove_interface       = rtl8180_remove_interface,
 772         .config                 = rtl8180_config,
 773         .config_interface       = rtl8180_config_interface,
 774         .configure_filter       = rtl8180_configure_filter,
 775 };
 776
 777 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 778 {
 779         struct ieee80211_hw *dev = eeprom->data;
 780         struct rtl8180_priv *priv = dev->priv;
 781         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 782
 783         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 784         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 785         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 786         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 787 }
 788
 789 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 790 {
 791         struct ieee80211_hw *dev = eeprom->data;
 792         struct rtl8180_priv *priv = dev->priv;
 793         u8 reg = 2 << 6;
 794
 795         if (eeprom->reg_data_in)
 796                 reg |= RTL818X_EEPROM_CMD_WRITE;
 797         if (eeprom->reg_data_out)
 798                 reg |= RTL818X_EEPROM_CMD_READ;
 799         if (eeprom->reg_data_clock)
 800                 reg |= RTL818X_EEPROM_CMD_CK;
 801         if (eeprom->reg_chip_select)
 802                 reg |= RTL818X_EEPROM_CMD_CS;
 803
 804         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 805         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 806         udelay(10);
 807 }
 808
 809 static int __devinit rtl8180_probe(struct pci_dev *pdev,
 810                                    const struct pci_device_id *id)
 811 {
 812         struct ieee80211_hw *dev;
 813         struct rtl8180_priv *priv;
 814         unsigned long mem_addr, mem_len;
 815         unsigned int io_addr, io_len;
 816         int err, i;
 817         struct eeprom_93cx6 eeprom;
 818         const char *chip_name, *rf_name = NULL;
 819         u32 reg;
 820         u16 eeprom_val;
 821         DECLARE_MAC_BUF(mac);
 822
 823         err = pci_enable_device(pdev);
 824         if (err) {
 825                 printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
 826                        pci_name(pdev));
 827                 return err;
 828         }
 829
 830         err = pci_request_regions(pdev, KBUILD_MODNAME);
 831         if (err) {
 832                 printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
 833                        pci_name(pdev));
 834                 return err;
 835         }
 836
 837         io_addr = pci_resource_start(pdev, 0);
 838         io_len = pci_resource_len(pdev, 0);
 839         mem_addr = pci_resource_start(pdev, 1);
 840         mem_len = pci_resource_len(pdev, 1);
 841
 842         if (mem_len < sizeof(struct rtl818x_csr) ||
 843             io_len < sizeof(struct rtl818x_csr)) {
 844                 printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
 845                        pci_name(pdev));
 846                 err = -ENOMEM;
 847                 goto err_free_reg;
 848         }
 849
 850         if ((err = pci_set_dma_mask(pdev, 0xFFFFFF00ULL)) ||
 851             (err = pci_set_consistent_dma_mask(pdev, 0xFFFFFF00ULL))) {
 852                 printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
 853                        pci_name(pdev));
 854                 goto err_free_reg;
 855         }
 856
 857         pci_set_master(pdev);
 858
 859         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
 860         if (!dev) {
 861                 printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
 862                        pci_name(pdev));
 863                 err = -ENOMEM;
 864                 goto err_free_reg;
 865         }
 866
 867         priv = dev->priv;
 868         priv->pdev = pdev;
 869
 870         SET_IEEE80211_DEV(dev, &pdev->dev);
 871         pci_set_drvdata(pdev, dev);
 872
 873         priv->map = pci_iomap(pdev, 1, mem_len);
 874         if (!priv->map)
 875                 priv->map = pci_iomap(pdev, 0, io_len);
 876
 877         if (!priv->map) {
 878                 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
 879                        pci_name(pdev));
 880                 goto err_free_dev;
 881         }
 882
 883         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 884         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 885
 886         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 887         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 888
 889         priv->band.band = IEEE80211_BAND_2GHZ;
 890         priv->band.channels = priv->channels;
 891         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 892         priv->band.bitrates = priv->rates;
 893         priv->band.n_bitrates = 4;
 894         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 895
 896         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 897                      IEEE80211_HW_RX_INCLUDES_FCS;
 898         dev->queues = 1;
 899         dev->max_rssi = 65;
 900
 901         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 902         reg &= RTL818X_TX_CONF_HWVER_MASK;
 903         switch (reg) {
 904         case RTL818X_TX_CONF_R8180_ABCD:
 905                 chip_name = "RTL8180";
 906                 break;
 907         case RTL818X_TX_CONF_R8180_F:
 908                 chip_name = "RTL8180vF";
 909                 break;
 910         case RTL818X_TX_CONF_R8185_ABC:
 911                 chip_name = "RTL8185";
 912                 break;
 913         case RTL818X_TX_CONF_R8185_D:
 914                 chip_name = "RTL8185vD";
 915                 break;
 916         default:
 917                 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
 918                        pci_name(pdev), reg >> 25);
 919                 goto err_iounmap;
 920         }
 921
 922         priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
 923         if (priv->r8185) {
 924                 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 925                 pci_try_set_mwi(pdev);
 926         }
 927
 928         eeprom.data = dev;
 929         eeprom.register_read = rtl8180_eeprom_register_read;
 930         eeprom.register_write = rtl8180_eeprom_register_write;
 931         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 932                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 933         else
 934                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 935
 936         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
 937         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 938         udelay(10);
 939
 940         eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
 941         eeprom_val &= 0xFF;
 942         switch (eeprom_val) {
 943         case 1: rf_name = "Intersil";
 944                 break;
 945         case 2: rf_name = "RFMD";
 946                 break;
 947         case 3: priv->rf = &sa2400_rf_ops;
 948                 break;
 949         case 4: priv->rf = &max2820_rf_ops;
 950                 break;
 951         case 5: priv->rf = &grf5101_rf_ops;
 952                 break;
 953         case 9: priv->rf = rtl8180_detect_rf(dev);
 954                 break;
 955         case 10:
 956                 rf_name = "RTL8255";
 957                 break;
 958         default:
 959                 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
 960                        pci_name(pdev), eeprom_val);
 961                 goto err_iounmap;
 962         }
 963
 964         if (!priv->rf) {
 965                 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
 966                        pci_name(pdev), rf_name);
 967                 goto err_iounmap;
 968         }
 969
 970         eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
 971         priv->csthreshold = eeprom_val >> 8;
 972         if (!priv->r8185) {
 973                 __le32 anaparam;
 974                 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
 975                 priv->anaparam = le32_to_cpu(anaparam);
 976                 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
 977         }
 978
 979         eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)dev->wiphy->perm_addr, 3);
 980         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 981                 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
 982                        " randomly generated MAC addr\n", pci_name(pdev));
 983                 random_ether_addr(dev->wiphy->perm_addr);
 984         }
 985
 986         /* CCK TX power */
 987         for (i = 0; i < 14; i += 2) {
 988                 u16 txpwr;
 989                 eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr);
 990                 priv->channels[i].hw_value = txpwr & 0xFF;
 991                 priv->channels[i + 1].hw_value = txpwr >> 8;
 992         }
 993
 994         /* OFDM TX power */
 995         if (priv->r8185) {
 996                 for (i = 0; i < 14; i += 2) {
 997                         u16 txpwr;
 998                         eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
 999                         priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1000                         priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1001                 }
1002         }
1003
1004         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1005
1006         spin_lock_init(&priv->lock);
1007
1008         err = ieee80211_register_hw(dev);
1009         if (err) {
1010                 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1011                        pci_name(pdev));
1012                 goto err_iounmap;
1013         }
1014
1015         printk(KERN_INFO "%s: hwaddr %s, %s + %s\n",
1016                wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
1017                chip_name, priv->rf->name);
1018
1019         return 0;
1020
1021  err_iounmap:
1022         iounmap(priv->map);
1023
1024  err_free_dev:
1025         pci_set_drvdata(pdev, NULL);
1026         ieee80211_free_hw(dev);
1027
1028  err_free_reg:
1029         pci_release_regions(pdev);
1030         pci_disable_device(pdev);
1031         return err;
1032 }
1033
1034 static void __devexit rtl8180_remove(struct pci_dev *pdev)
1035 {
1036         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1037         struct rtl8180_priv *priv;
1038
1039         if (!dev)
1040                 return;
1041
1042         ieee80211_unregister_hw(dev);
1043
1044         priv = dev->priv;
1045
1046         pci_iounmap(pdev, priv->map);
1047         pci_release_regions(pdev);
1048         pci_disable_device(pdev);
1049         ieee80211_free_hw(dev);
1050 }
1051
1052 #ifdef CONFIG_PM
1053 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1054 {
1055         pci_save_state(pdev);
1056         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1057         return 0;
1058 }
1059
1060 static int rtl8180_resume(struct pci_dev *pdev)
1061 {
1062         pci_set_power_state(pdev, PCI_D0);
1063         pci_restore_state(pdev);
1064         return 0;
1065 }
1066
1067 #endif /* CONFIG_PM */
1068
1069 static struct pci_driver rtl8180_driver = {
1070         .name           = KBUILD_MODNAME,
1071         .id_table       = rtl8180_table,
1072         .probe          = rtl8180_probe,
1073         .remove         = __devexit_p(rtl8180_remove),
1074 #ifdef CONFIG_PM
1075         .suspend        = rtl8180_suspend,
1076         .resume         = rtl8180_resume,
1077 #endif /* CONFIG_PM */
1078 };
1079
1080 static int __init rtl8180_init(void)
1081 {
1082         return pci_register_driver(&rtl8180_driver);
1083 }
1084
1085 static void __exit rtl8180_exit(void)
1086 {
1087         pci_unregister_driver(&rtl8180_driver);
1088 }
1089
1090 module_init(rtl8180_init);
1091 module_exit(rtl8180_exit);