git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/rtl818x/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                 ieee80211_tx_info_clear_status(info);
 186
 187                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 188                     (flags & RTL818X_TX_DESC_FLAG_TX_OK))
 189                         info->flags |= IEEE80211_TX_STAT_ACK;
 190
 191                 info->status.rates[0].count = (flags & 0xFF) + 1;
 192
 193                 ieee80211_tx_status_irqsafe(dev, skb);
 194                 if (ring->entries - skb_queue_len(&ring->queue) == 2)
 195                         ieee80211_wake_queue(dev, prio);
 196         }
 197 }
 198
 199 static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
 200 {
 201         struct ieee80211_hw *dev = dev_id;
 202         struct rtl8180_priv *priv = dev->priv;
 203         u16 reg;
 204
 205         spin_lock(&priv->lock);
 206         reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
 207         if (unlikely(reg == 0xFFFF)) {
 208                 spin_unlock(&priv->lock);
 209                 return IRQ_HANDLED;
 210         }
 211
 212         rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
 213
 214         if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
 215                 rtl8180_handle_tx(dev, 3);
 216
 217         if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
 218                 rtl8180_handle_tx(dev, 2);
 219
 220         if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
 221                 rtl8180_handle_tx(dev, 1);
 222
 223         if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
 224                 rtl8180_handle_tx(dev, 0);
 225
 226         if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
 227                 rtl8180_handle_rx(dev);
 228
 229         spin_unlock(&priv->lock);
 230
 231         return IRQ_HANDLED;
 232 }
 233
 234 static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 235 {
 236         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 237         struct rtl8180_priv *priv = dev->priv;
 238         struct rtl8180_tx_ring *ring;
 239         struct rtl8180_tx_desc *entry;
 240         unsigned long flags;
 241         unsigned int idx, prio;
 242         dma_addr_t mapping;
 243         u32 tx_flags;
 244         u8 rc_flags;
 245         u16 plcp_len = 0;
 246         __le16 rts_duration = 0;
 247
 248         prio = skb_get_queue_mapping(skb);
 249         ring = &priv->tx_ring[prio];
 250
 251         mapping = pci_map_single(priv->pdev, skb->data,
 252                                  skb->len, PCI_DMA_TODEVICE);
 253
 254         tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
 255                    RTL818X_TX_DESC_FLAG_LS |
 256                    (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
 257                    skb->len;
 258
 259         if (priv->r8185)
 260                 tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
 261                             RTL818X_TX_DESC_FLAG_NO_ENC;
 262
 263         rc_flags = info->control.rates[0].flags;
 264         if (rc_flags & IEEE80211_TX_RC_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 (rc_flags & IEEE80211_TX_RC_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 (rc_flags & IEEE80211_TX_RC_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.rates[1].idx >= 0 ?
 296                 ieee80211_get_alt_retry_rate(dev, info, 0)->bitrate << 4 : 0;
 297         entry->retry_limit = info->control.rates[0].count;
 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, u32 changed)
 696 {
 697         struct rtl8180_priv *priv = dev->priv;
 698         struct ieee80211_conf *conf = &dev->conf;
 699
 700         priv->rf->set_chan(dev, conf);
 701
 702         return 0;
 703 }
 704
 705 static int rtl8180_config_interface(struct ieee80211_hw *dev,
 706                                     struct ieee80211_vif *vif,
 707                                     struct ieee80211_if_conf *conf)
 708 {
 709         struct rtl8180_priv *priv = dev->priv;
 710         int i;
 711
 712         for (i = 0; i < ETH_ALEN; i++)
 713                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
 714
 715         if (is_valid_ether_addr(conf->bssid))
 716                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
 717         else
 718                 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
 719
 720         return 0;
 721 }
 722
 723 static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
 724                                      struct ieee80211_vif *vif,
 725                                      struct ieee80211_bss_conf *info,
 726                                      u32 changed)
 727 {
 728         struct rtl8180_priv *priv = dev->priv;
 729
 730         if (changed & BSS_CHANGED_ERP_SLOT && priv->rf->conf_erp)
 731                 priv->rf->conf_erp(dev, info);
 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         .bss_info_changed       = rtl8180_bss_info_changed,
 775         .configure_filter       = rtl8180_configure_filter,
 776 };
 777
 778 static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
 779 {
 780         struct ieee80211_hw *dev = eeprom->data;
 781         struct rtl8180_priv *priv = dev->priv;
 782         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 783
 784         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
 785         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
 786         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
 787         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
 788 }
 789
 790 static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
 791 {
 792         struct ieee80211_hw *dev = eeprom->data;
 793         struct rtl8180_priv *priv = dev->priv;
 794         u8 reg = 2 << 6;
 795
 796         if (eeprom->reg_data_in)
 797                 reg |= RTL818X_EEPROM_CMD_WRITE;
 798         if (eeprom->reg_data_out)
 799                 reg |= RTL818X_EEPROM_CMD_READ;
 800         if (eeprom->reg_data_clock)
 801                 reg |= RTL818X_EEPROM_CMD_CK;
 802         if (eeprom->reg_chip_select)
 803                 reg |= RTL818X_EEPROM_CMD_CS;
 804
 805         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
 806         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 807         udelay(10);
 808 }
 809
 810 static int __devinit rtl8180_probe(struct pci_dev *pdev,
 811                                    const struct pci_device_id *id)
 812 {
 813         struct ieee80211_hw *dev;
 814         struct rtl8180_priv *priv;
 815         unsigned long mem_addr, mem_len;
 816         unsigned int io_addr, io_len;
 817         int err, i;
 818         struct eeprom_93cx6 eeprom;
 819         const char *chip_name, *rf_name = NULL;
 820         u32 reg;
 821         u16 eeprom_val;
 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         dev->max_rates = 2;
 871         SET_IEEE80211_DEV(dev, &pdev->dev);
 872         pci_set_drvdata(pdev, dev);
 873
 874         priv->map = pci_iomap(pdev, 1, mem_len);
 875         if (!priv->map)
 876                 priv->map = pci_iomap(pdev, 0, io_len);
 877
 878         if (!priv->map) {
 879                 printk(KERN_ERR "%s (rtl8180): Cannot map device memory\n",
 880                        pci_name(pdev));
 881                 goto err_free_dev;
 882         }
 883
 884         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
 885         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
 886
 887         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
 888         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
 889
 890         priv->band.band = IEEE80211_BAND_2GHZ;
 891         priv->band.channels = priv->channels;
 892         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
 893         priv->band.bitrates = priv->rates;
 894         priv->band.n_bitrates = 4;
 895         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
 896
 897         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
 898                      IEEE80211_HW_RX_INCLUDES_FCS |
 899                      IEEE80211_HW_SIGNAL_UNSPEC;
 900         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 901         dev->queues = 1;
 902         dev->max_signal = 65;
 903
 904         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
 905         reg &= RTL818X_TX_CONF_HWVER_MASK;
 906         switch (reg) {
 907         case RTL818X_TX_CONF_R8180_ABCD:
 908                 chip_name = "RTL8180";
 909                 break;
 910         case RTL818X_TX_CONF_R8180_F:
 911                 chip_name = "RTL8180vF";
 912                 break;
 913         case RTL818X_TX_CONF_R8185_ABC:
 914                 chip_name = "RTL8185";
 915                 break;
 916         case RTL818X_TX_CONF_R8185_D:
 917                 chip_name = "RTL8185vD";
 918                 break;
 919         default:
 920                 printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
 921                        pci_name(pdev), reg >> 25);
 922                 goto err_iounmap;
 923         }
 924
 925         priv->r8185 = reg & RTL818X_TX_CONF_R8185_ABC;
 926         if (priv->r8185) {
 927                 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
 928                 pci_try_set_mwi(pdev);
 929         }
 930
 931         eeprom.data = dev;
 932         eeprom.register_read = rtl8180_eeprom_register_read;
 933         eeprom.register_write = rtl8180_eeprom_register_write;
 934         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
 935                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
 936         else
 937                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
 938
 939         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_PROGRAM);
 940         rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
 941         udelay(10);
 942
 943         eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
 944         eeprom_val &= 0xFF;
 945         switch (eeprom_val) {
 946         case 1: rf_name = "Intersil";
 947                 break;
 948         case 2: rf_name = "RFMD";
 949                 break;
 950         case 3: priv->rf = &sa2400_rf_ops;
 951                 break;
 952         case 4: priv->rf = &max2820_rf_ops;
 953                 break;
 954         case 5: priv->rf = &grf5101_rf_ops;
 955                 break;
 956         case 9: priv->rf = rtl8180_detect_rf(dev);
 957                 break;
 958         case 10:
 959                 rf_name = "RTL8255";
 960                 break;
 961         default:
 962                 printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
 963                        pci_name(pdev), eeprom_val);
 964                 goto err_iounmap;
 965         }
 966
 967         if (!priv->rf) {
 968                 printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
 969                        pci_name(pdev), rf_name);
 970                 goto err_iounmap;
 971         }
 972
 973         eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
 974         priv->csthreshold = eeprom_val >> 8;
 975         if (!priv->r8185) {
 976                 __le32 anaparam;
 977                 eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
 978                 priv->anaparam = le32_to_cpu(anaparam);
 979                 eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
 980         }
 981
 982         eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)dev->wiphy->perm_addr, 3);
 983         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 984                 printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
 985                        " randomly generated MAC addr\n", pci_name(pdev));
 986                 random_ether_addr(dev->wiphy->perm_addr);
 987         }
 988
 989         /* CCK TX power */
 990         for (i = 0; i < 14; i += 2) {
 991                 u16 txpwr;
 992                 eeprom_93cx6_read(&eeprom, 0x10 + (i >> 1), &txpwr);
 993                 priv->channels[i].hw_value = txpwr & 0xFF;
 994                 priv->channels[i + 1].hw_value = txpwr >> 8;
 995         }
 996
 997         /* OFDM TX power */
 998         if (priv->r8185) {
 999                 for (i = 0; i < 14; i += 2) {
1000                         u16 txpwr;
1001                         eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
1002                         priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
1003                         priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
1004                 }
1005         }
1006
1007         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1008
1009         spin_lock_init(&priv->lock);
1010
1011         err = ieee80211_register_hw(dev);
1012         if (err) {
1013                 printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
1014                        pci_name(pdev));
1015                 goto err_iounmap;
1016         }
1017
1018         printk(KERN_INFO "%s: hwaddr %pM, %s + %s\n",
1019                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1020                chip_name, priv->rf->name);
1021
1022         return 0;
1023
1024  err_iounmap:
1025         iounmap(priv->map);
1026
1027  err_free_dev:
1028         pci_set_drvdata(pdev, NULL);
1029         ieee80211_free_hw(dev);
1030
1031  err_free_reg:
1032         pci_release_regions(pdev);
1033         pci_disable_device(pdev);
1034         return err;
1035 }
1036
1037 static void __devexit rtl8180_remove(struct pci_dev *pdev)
1038 {
1039         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
1040         struct rtl8180_priv *priv;
1041
1042         if (!dev)
1043                 return;
1044
1045         ieee80211_unregister_hw(dev);
1046
1047         priv = dev->priv;
1048
1049         pci_iounmap(pdev, priv->map);
1050         pci_release_regions(pdev);
1051         pci_disable_device(pdev);
1052         ieee80211_free_hw(dev);
1053 }
1054
1055 #ifdef CONFIG_PM
1056 static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
1057 {
1058         pci_save_state(pdev);
1059         pci_set_power_state(pdev, pci_choose_state(pdev, state));
1060         return 0;
1061 }
1062
1063 static int rtl8180_resume(struct pci_dev *pdev)
1064 {
1065         pci_set_power_state(pdev, PCI_D0);
1066         pci_restore_state(pdev);
1067         return 0;
1068 }
1069
1070 #endif /* CONFIG_PM */
1071
1072 static struct pci_driver rtl8180_driver = {
1073         .name           = KBUILD_MODNAME,
1074         .id_table       = rtl8180_table,
1075         .probe          = rtl8180_probe,
1076         .remove         = __devexit_p(rtl8180_remove),
1077 #ifdef CONFIG_PM
1078         .suspend        = rtl8180_suspend,
1079         .resume         = rtl8180_resume,
1080 #endif /* CONFIG_PM */
1081 };
1082
1083 static int __init rtl8180_init(void)
1084 {
1085         return pci_register_driver(&rtl8180_driver);
1086 }
1087
1088 static void __exit rtl8180_exit(void)
1089 {
1090         pci_unregister_driver(&rtl8180_driver);
1091 }
1092
1093 module_init(rtl8180_init);
1094 module_exit(rtl8180_exit);