drivers/net/wireless/p54/p54pci.c

   1
   2 /*
   3  * Linux device driver for PCI based Prism54
   4  *
   5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   6  * Copyright (c) 2008, Christian Lamparter <chunkeey@web.de>
   7  *
   8  * Based on the islsm (softmac prism54) driver, which is:
   9  * Copyright 2004-2006 Jean-Baptiste Note <jean-baptiste.note@m4x.org>, et al.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/pci.h>
  18 #include <linux/firmware.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <net/mac80211.h>
  23
  24 #include "p54.h"
  25 #include "lmac.h"
  26 #include "p54pci.h"
  27
  28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  29 MODULE_DESCRIPTION("Prism54 PCI wireless driver");
  30 MODULE_LICENSE("GPL");
  31 MODULE_ALIAS("prism54pci");
  32 MODULE_FIRMWARE("isl3886pci");
  33
  34 static struct pci_device_id p54p_table[] __devinitdata = {
  35         /* Intersil PRISM Duette/Prism GT Wireless LAN adapter */
  36         { PCI_DEVICE(0x1260, 0x3890) },
  37         /* 3COM 3CRWE154G72 Wireless LAN adapter */
  38         { PCI_DEVICE(0x10b7, 0x6001) },
  39         /* Intersil PRISM Indigo Wireless LAN adapter */
  40         { PCI_DEVICE(0x1260, 0x3877) },
  41         /* Intersil PRISM Javelin/Xbow Wireless LAN adapter */
  42         { PCI_DEVICE(0x1260, 0x3886) },
  43         { },
  44 };
  45
  46 MODULE_DEVICE_TABLE(pci, p54p_table);
  47
  48 static int p54p_upload_firmware(struct ieee80211_hw *dev)
  49 {
  50         struct p54p_priv *priv = dev->priv;
  51         __le32 reg;
  52         int err;
  53         __le32 *data;
  54         u32 remains, left, device_addr;
  55
  56         P54P_WRITE(int_enable, cpu_to_le32(0));
  57         P54P_READ(int_enable);
  58         udelay(10);
  59
  60         reg = P54P_READ(ctrl_stat);
  61         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
  62         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
  63         P54P_WRITE(ctrl_stat, reg);
  64         P54P_READ(ctrl_stat);
  65         udelay(10);
  66
  67         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
  68         P54P_WRITE(ctrl_stat, reg);
  69         wmb();
  70         udelay(10);
  71
  72         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
  73         P54P_WRITE(ctrl_stat, reg);
  74         wmb();
  75
  76         /* wait for the firmware to reset properly */
  77         mdelay(10);
  78
  79         err = p54_parse_firmware(dev, priv->firmware);
  80         if (err)
  81                 return err;
  82
  83         if (priv->common.fw_interface != FW_LM86) {
  84                 dev_err(&priv->pdev->dev, "wrong firmware, "
  85                         "please get a LM86(PCI) firmware a try again.\n");
  86                 return -EINVAL;
  87         }
  88
  89         data = (__le32 *) priv->firmware->data;
  90         remains = priv->firmware->size;
  91         device_addr = ISL38XX_DEV_FIRMWARE_ADDR;
  92         while (remains) {
  93                 u32 i = 0;
  94                 left = min((u32)0x1000, remains);
  95                 P54P_WRITE(direct_mem_base, cpu_to_le32(device_addr));
  96                 P54P_READ(int_enable);
  97
  98                 device_addr += 0x1000;
  99                 while (i < left) {
 100                         P54P_WRITE(direct_mem_win[i], *data++);
 101                         i += sizeof(u32);
 102                 }
 103
 104                 remains -= left;
 105                 P54P_READ(int_enable);
 106         }
 107
 108         reg = P54P_READ(ctrl_stat);
 109         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
 110         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 111         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
 112         P54P_WRITE(ctrl_stat, reg);
 113         P54P_READ(ctrl_stat);
 114         udelay(10);
 115
 116         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
 117         P54P_WRITE(ctrl_stat, reg);
 118         wmb();
 119         udelay(10);
 120
 121         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 122         P54P_WRITE(ctrl_stat, reg);
 123         wmb();
 124         udelay(10);
 125
 126         /* wait for the firmware to boot properly */
 127         mdelay(100);
 128
 129         return 0;
 130 }
 131
 132 static void p54p_refill_rx_ring(struct ieee80211_hw *dev,
 133         int ring_index, struct p54p_desc *ring, u32 ring_limit,
 134         struct sk_buff **rx_buf)
 135 {
 136         struct p54p_priv *priv = dev->priv;
 137         struct p54p_ring_control *ring_control = priv->ring_control;
 138         u32 limit, idx, i;
 139
 140         idx = le32_to_cpu(ring_control->host_idx[ring_index]);
 141         limit = idx;
 142         limit -= le32_to_cpu(ring_control->device_idx[ring_index]);
 143         limit = ring_limit - limit;
 144
 145         i = idx % ring_limit;
 146         while (limit-- > 1) {
 147                 struct p54p_desc *desc = &ring[i];
 148
 149                 if (!desc->host_addr) {
 150                         struct sk_buff *skb;
 151                         dma_addr_t mapping;
 152                         skb = dev_alloc_skb(priv->common.rx_mtu + 32);
 153                         if (!skb)
 154                                 break;
 155
 156                         mapping = pci_map_single(priv->pdev,
 157                                                  skb_tail_pointer(skb),
 158                                                  priv->common.rx_mtu + 32,
 159                                                  PCI_DMA_FROMDEVICE);
 160                         desc->host_addr = cpu_to_le32(mapping);
 161                         desc->device_addr = 0;  // FIXME: necessary?
 162                         desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
 163                         desc->flags = 0;
 164                         rx_buf[i] = skb;
 165                 }
 166
 167                 i++;
 168                 idx++;
 169                 i %= ring_limit;
 170         }
 171
 172         wmb();
 173         ring_control->host_idx[ring_index] = cpu_to_le32(idx);
 174 }
 175
 176 static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index,
 177         int ring_index, struct p54p_desc *ring, u32 ring_limit,
 178         struct sk_buff **rx_buf)
 179 {
 180         struct p54p_priv *priv = dev->priv;
 181         struct p54p_ring_control *ring_control = priv->ring_control;
 182         struct p54p_desc *desc;
 183         u32 idx, i;
 184
 185         i = (*index) % ring_limit;
 186         (*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
 187         idx %= ring_limit;
 188         while (i != idx) {
 189                 u16 len;
 190                 struct sk_buff *skb;
 191                 desc = &ring[i];
 192                 len = le16_to_cpu(desc->len);
 193                 skb = rx_buf[i];
 194
 195                 if (!skb) {
 196                         i++;
 197                         i %= ring_limit;
 198                         continue;
 199                 }
 200
 201                 if (unlikely(len > priv->common.rx_mtu)) {
 202                         if (net_ratelimit())
 203                                 dev_err(&priv->pdev->dev, "rx'd frame size "
 204                                         "exceeds length threshold.\n");
 205
 206                         len = priv->common.rx_mtu;
 207                 }
 208                 skb_put(skb, len);
 209
 210                 if (p54_rx(dev, skb)) {
 211                         pci_unmap_single(priv->pdev,
 212                                          le32_to_cpu(desc->host_addr),
 213                                          priv->common.rx_mtu + 32,
 214                                          PCI_DMA_FROMDEVICE);
 215                         rx_buf[i] = NULL;
 216                         desc->host_addr = 0;
 217                 } else {
 218                         skb_trim(skb, 0);
 219                         desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
 220                 }
 221
 222                 i++;
 223                 i %= ring_limit;
 224         }
 225
 226         p54p_refill_rx_ring(dev, ring_index, ring, ring_limit, rx_buf);
 227 }
 228
 229 /* caller must hold priv->lock */
 230 static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index,
 231         int ring_index, struct p54p_desc *ring, u32 ring_limit,
 232         void **tx_buf)
 233 {
 234         struct p54p_priv *priv = dev->priv;
 235         struct p54p_ring_control *ring_control = priv->ring_control;
 236         struct p54p_desc *desc;
 237         u32 idx, i;
 238
 239         i = (*index) % ring_limit;
 240         (*index) = idx = le32_to_cpu(ring_control->device_idx[1]);
 241         idx %= ring_limit;
 242
 243         while (i != idx) {
 244                 desc = &ring[i];
 245                 if (tx_buf[i])
 246                         if (FREE_AFTER_TX((struct sk_buff *) tx_buf[i]))
 247                                 p54_free_skb(dev, tx_buf[i]);
 248                 tx_buf[i] = NULL;
 249
 250                 pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr),
 251                                  le16_to_cpu(desc->len), PCI_DMA_TODEVICE);
 252
 253                 desc->host_addr = 0;
 254                 desc->device_addr = 0;
 255                 desc->len = 0;
 256                 desc->flags = 0;
 257
 258                 i++;
 259                 i %= ring_limit;
 260         }
 261 }
 262
 263 static void p54p_rx_tasklet(unsigned long dev_id)
 264 {
 265         struct ieee80211_hw *dev = (struct ieee80211_hw *)dev_id;
 266         struct p54p_priv *priv = dev->priv;
 267         struct p54p_ring_control *ring_control = priv->ring_control;
 268
 269         p54p_check_rx_ring(dev, &priv->rx_idx_mgmt, 2, ring_control->rx_mgmt,
 270                 ARRAY_SIZE(ring_control->rx_mgmt), priv->rx_buf_mgmt);
 271
 272         p54p_check_rx_ring(dev, &priv->rx_idx_data, 0, ring_control->rx_data,
 273                 ARRAY_SIZE(ring_control->rx_data), priv->rx_buf_data);
 274
 275         wmb();
 276         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 277 }
 278
 279 static irqreturn_t p54p_interrupt(int irq, void *dev_id)
 280 {
 281         struct ieee80211_hw *dev = dev_id;
 282         struct p54p_priv *priv = dev->priv;
 283         struct p54p_ring_control *ring_control = priv->ring_control;
 284         __le32 reg;
 285
 286         spin_lock(&priv->lock);
 287         reg = P54P_READ(int_ident);
 288         if (unlikely(reg == cpu_to_le32(0xFFFFFFFF))) {
 289                 spin_unlock(&priv->lock);
 290                 return IRQ_HANDLED;
 291         }
 292
 293         P54P_WRITE(int_ack, reg);
 294
 295         reg &= P54P_READ(int_enable);
 296
 297         if (reg & cpu_to_le32(ISL38XX_INT_IDENT_UPDATE)) {
 298                 p54p_check_tx_ring(dev, &priv->tx_idx_mgmt,
 299                                    3, ring_control->tx_mgmt,
 300                                    ARRAY_SIZE(ring_control->tx_mgmt),
 301                                    priv->tx_buf_mgmt);
 302
 303                 p54p_check_tx_ring(dev, &priv->tx_idx_data,
 304                                    1, ring_control->tx_data,
 305                                    ARRAY_SIZE(ring_control->tx_data),
 306                                    priv->tx_buf_data);
 307
 308                 tasklet_schedule(&priv->rx_tasklet);
 309
 310         } else if (reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT))
 311                 complete(&priv->boot_comp);
 312
 313         spin_unlock(&priv->lock);
 314
 315         return reg ? IRQ_HANDLED : IRQ_NONE;
 316 }
 317
 318 static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 319 {
 320         struct p54p_priv *priv = dev->priv;
 321         struct p54p_ring_control *ring_control = priv->ring_control;
 322         unsigned long flags;
 323         struct p54p_desc *desc;
 324         dma_addr_t mapping;
 325         u32 device_idx, idx, i;
 326
 327         spin_lock_irqsave(&priv->lock, flags);
 328
 329         device_idx = le32_to_cpu(ring_control->device_idx[1]);
 330         idx = le32_to_cpu(ring_control->host_idx[1]);
 331         i = idx % ARRAY_SIZE(ring_control->tx_data);
 332
 333         priv->tx_buf_data[i] = skb;
 334         mapping = pci_map_single(priv->pdev, skb->data, skb->len,
 335                                  PCI_DMA_TODEVICE);
 336         desc = &ring_control->tx_data[i];
 337         desc->host_addr = cpu_to_le32(mapping);
 338         desc->device_addr = ((struct p54_hdr *)skb->data)->req_id;
 339         desc->len = cpu_to_le16(skb->len);
 340         desc->flags = 0;
 341
 342         wmb();
 343         ring_control->host_idx[1] = cpu_to_le32(idx + 1);
 344         spin_unlock_irqrestore(&priv->lock, flags);
 345
 346         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 347         P54P_READ(dev_int);
 348 }
 349
 350 static void p54p_stop(struct ieee80211_hw *dev)
 351 {
 352         struct p54p_priv *priv = dev->priv;
 353         struct p54p_ring_control *ring_control = priv->ring_control;
 354         unsigned int i;
 355         struct p54p_desc *desc;
 356
 357         tasklet_kill(&priv->rx_tasklet);
 358
 359         P54P_WRITE(int_enable, cpu_to_le32(0));
 360         P54P_READ(int_enable);
 361         udelay(10);
 362
 363         free_irq(priv->pdev->irq, dev);
 364
 365         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
 366
 367         for (i = 0; i < ARRAY_SIZE(priv->rx_buf_data); i++) {
 368                 desc = &ring_control->rx_data[i];
 369                 if (desc->host_addr)
 370                         pci_unmap_single(priv->pdev,
 371                                          le32_to_cpu(desc->host_addr),
 372                                          priv->common.rx_mtu + 32,
 373                                          PCI_DMA_FROMDEVICE);
 374                 kfree_skb(priv->rx_buf_data[i]);
 375                 priv->rx_buf_data[i] = NULL;
 376         }
 377
 378         for (i = 0; i < ARRAY_SIZE(priv->rx_buf_mgmt); i++) {
 379                 desc = &ring_control->rx_mgmt[i];
 380                 if (desc->host_addr)
 381                         pci_unmap_single(priv->pdev,
 382                                          le32_to_cpu(desc->host_addr),
 383                                          priv->common.rx_mtu + 32,
 384                                          PCI_DMA_FROMDEVICE);
 385                 kfree_skb(priv->rx_buf_mgmt[i]);
 386                 priv->rx_buf_mgmt[i] = NULL;
 387         }
 388
 389         for (i = 0; i < ARRAY_SIZE(priv->tx_buf_data); i++) {
 390                 desc = &ring_control->tx_data[i];
 391                 if (desc->host_addr)
 392                         pci_unmap_single(priv->pdev,
 393                                          le32_to_cpu(desc->host_addr),
 394                                          le16_to_cpu(desc->len),
 395                                          PCI_DMA_TODEVICE);
 396
 397                 p54_free_skb(dev, priv->tx_buf_data[i]);
 398                 priv->tx_buf_data[i] = NULL;
 399         }
 400
 401         for (i = 0; i < ARRAY_SIZE(priv->tx_buf_mgmt); i++) {
 402                 desc = &ring_control->tx_mgmt[i];
 403                 if (desc->host_addr)
 404                         pci_unmap_single(priv->pdev,
 405                                          le32_to_cpu(desc->host_addr),
 406                                          le16_to_cpu(desc->len),
 407                                          PCI_DMA_TODEVICE);
 408
 409                 p54_free_skb(dev, priv->tx_buf_mgmt[i]);
 410                 priv->tx_buf_mgmt[i] = NULL;
 411         }
 412
 413         memset(ring_control, 0, sizeof(*ring_control));
 414 }
 415
 416 static int p54p_open(struct ieee80211_hw *dev)
 417 {
 418         struct p54p_priv *priv = dev->priv;
 419         int err;
 420
 421         init_completion(&priv->boot_comp);
 422         err = request_irq(priv->pdev->irq, p54p_interrupt,
 423                           IRQF_SHARED, "p54pci", dev);
 424         if (err) {
 425                 dev_err(&priv->pdev->dev, "failed to register IRQ handler\n");
 426                 return err;
 427         }
 428
 429         memset(priv->ring_control, 0, sizeof(*priv->ring_control));
 430         err = p54p_upload_firmware(dev);
 431         if (err) {
 432                 free_irq(priv->pdev->irq, dev);
 433                 return err;
 434         }
 435         priv->rx_idx_data = priv->tx_idx_data = 0;
 436         priv->rx_idx_mgmt = priv->tx_idx_mgmt = 0;
 437
 438         p54p_refill_rx_ring(dev, 0, priv->ring_control->rx_data,
 439                 ARRAY_SIZE(priv->ring_control->rx_data), priv->rx_buf_data);
 440
 441         p54p_refill_rx_ring(dev, 2, priv->ring_control->rx_mgmt,
 442                 ARRAY_SIZE(priv->ring_control->rx_mgmt), priv->rx_buf_mgmt);
 443
 444         P54P_WRITE(ring_control_base, cpu_to_le32(priv->ring_control_dma));
 445         P54P_READ(ring_control_base);
 446         wmb();
 447         udelay(10);
 448
 449         P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT));
 450         P54P_READ(int_enable);
 451         wmb();
 452         udelay(10);
 453
 454         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
 455         P54P_READ(dev_int);
 456
 457         if (!wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ)) {
 458                 printk(KERN_ERR "%s: Cannot boot firmware!\n",
 459                        wiphy_name(dev->wiphy));
 460                 p54p_stop(dev);
 461                 return -ETIMEDOUT;
 462         }
 463
 464         P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE));
 465         P54P_READ(int_enable);
 466         wmb();
 467         udelay(10);
 468
 469         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 470         P54P_READ(dev_int);
 471         wmb();
 472         udelay(10);
 473
 474         return 0;
 475 }
 476
 477 static int __devinit p54p_probe(struct pci_dev *pdev,
 478                                 const struct pci_device_id *id)
 479 {
 480         struct p54p_priv *priv;
 481         struct ieee80211_hw *dev;
 482         unsigned long mem_addr, mem_len;
 483         int err;
 484
 485         err = pci_enable_device(pdev);
 486         if (err) {
 487                 dev_err(&pdev->dev, "Cannot enable new PCI device\n");
 488                 return err;
 489         }
 490
 491         mem_addr = pci_resource_start(pdev, 0);
 492         mem_len = pci_resource_len(pdev, 0);
 493         if (mem_len < sizeof(struct p54p_csr)) {
 494                 dev_err(&pdev->dev, "Too short PCI resources\n");
 495                 goto err_disable_dev;
 496         }
 497
 498         err = pci_request_regions(pdev, "p54pci");
 499         if (err) {
 500                 dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
 501                 goto err_disable_dev;
 502         }
 503
 504         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
 505             pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
 506                 dev_err(&pdev->dev, "No suitable DMA available\n");
 507                 goto err_free_reg;
 508         }
 509
 510         pci_set_master(pdev);
 511         pci_try_set_mwi(pdev);
 512
 513         pci_write_config_byte(pdev, 0x40, 0);
 514         pci_write_config_byte(pdev, 0x41, 0);
 515
 516         dev = p54_init_common(sizeof(*priv));
 517         if (!dev) {
 518                 dev_err(&pdev->dev, "ieee80211 alloc failed\n");
 519                 err = -ENOMEM;
 520                 goto err_free_reg;
 521         }
 522
 523         priv = dev->priv;
 524         priv->pdev = pdev;
 525
 526         SET_IEEE80211_DEV(dev, &pdev->dev);
 527         pci_set_drvdata(pdev, dev);
 528
 529         priv->map = ioremap(mem_addr, mem_len);
 530         if (!priv->map) {
 531                 dev_err(&pdev->dev, "Cannot map device memory\n");
 532                 err = -ENOMEM;
 533                 goto err_free_dev;
 534         }
 535
 536         priv->ring_control = pci_alloc_consistent(pdev, sizeof(*priv->ring_control),
 537                                                   &priv->ring_control_dma);
 538         if (!priv->ring_control) {
 539                 dev_err(&pdev->dev, "Cannot allocate rings\n");
 540                 err = -ENOMEM;
 541                 goto err_iounmap;
 542         }
 543         priv->common.open = p54p_open;
 544         priv->common.stop = p54p_stop;
 545         priv->common.tx = p54p_tx;
 546
 547         spin_lock_init(&priv->lock);
 548         tasklet_init(&priv->rx_tasklet, p54p_rx_tasklet, (unsigned long)dev);
 549
 550         err = request_firmware(&priv->firmware, "isl3886pci",
 551                                &priv->pdev->dev);
 552         if (err) {
 553                 dev_err(&pdev->dev, "Cannot find firmware (isl3886pci)\n");
 554                 err = request_firmware(&priv->firmware, "isl3886",
 555                                        &priv->pdev->dev);
 556                 if (err)
 557                         goto err_free_common;
 558         }
 559
 560         err = p54p_open(dev);
 561         if (err)
 562                 goto err_free_common;
 563         err = p54_read_eeprom(dev);
 564         p54p_stop(dev);
 565         if (err)
 566                 goto err_free_common;
 567
 568         err = p54_register_common(dev, &pdev->dev);
 569         if (err)
 570                 goto err_free_common;
 571
 572         return 0;
 573
 574  err_free_common:
 575         release_firmware(priv->firmware);
 576         pci_free_consistent(pdev, sizeof(*priv->ring_control),
 577                             priv->ring_control, priv->ring_control_dma);
 578
 579  err_iounmap:
 580         iounmap(priv->map);
 581
 582  err_free_dev:
 583         pci_set_drvdata(pdev, NULL);
 584         p54_free_common(dev);
 585
 586  err_free_reg:
 587         pci_release_regions(pdev);
 588  err_disable_dev:
 589         pci_disable_device(pdev);
 590         return err;
 591 }
 592
 593 static void __devexit p54p_remove(struct pci_dev *pdev)
 594 {
 595         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 596         struct p54p_priv *priv;
 597
 598         if (!dev)
 599                 return;
 600
 601         p54_unregister_common(dev);
 602         priv = dev->priv;
 603         release_firmware(priv->firmware);
 604         pci_free_consistent(pdev, sizeof(*priv->ring_control),
 605                             priv->ring_control, priv->ring_control_dma);
 606         iounmap(priv->map);
 607         pci_release_regions(pdev);
 608         pci_disable_device(pdev);
 609         p54_free_common(dev);
 610 }
 611
 612 #ifdef CONFIG_PM
 613 static int p54p_suspend(struct pci_dev *pdev, pm_message_t state)
 614 {
 615         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 616         struct p54p_priv *priv = dev->priv;
 617
 618         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
 619                 ieee80211_stop_queues(dev);
 620                 p54p_stop(dev);
 621         }
 622
 623         pci_save_state(pdev);
 624         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 625         return 0;
 626 }
 627
 628 static int p54p_resume(struct pci_dev *pdev)
 629 {
 630         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 631         struct p54p_priv *priv = dev->priv;
 632
 633         pci_set_power_state(pdev, PCI_D0);
 634         pci_restore_state(pdev);
 635
 636         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
 637                 p54p_open(dev);
 638                 ieee80211_wake_queues(dev);
 639         }
 640
 641         return 0;
 642 }
 643 #endif /* CONFIG_PM */
 644
 645 static struct pci_driver p54p_driver = {
 646         .name           = "p54pci",
 647         .id_table       = p54p_table,
 648         .probe          = p54p_probe,
 649         .remove         = __devexit_p(p54p_remove),
 650 #ifdef CONFIG_PM
 651         .suspend        = p54p_suspend,
 652         .resume         = p54p_resume,
 653 #endif /* CONFIG_PM */
 654 };
 655
 656 static int __init p54p_init(void)
 657 {
 658         return pci_register_driver(&p54p_driver);
 659 }
 660
 661 static void __exit p54p_exit(void)
 662 {
 663         pci_unregister_driver(&p54p_driver);
 664 }
 665
 666 module_init(p54p_init);
 667 module_exit(p54p_exit);