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 DEFINE_PCI_DEVICE_TABLE(p54p_table) = {
  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
 161                         if (pci_dma_mapping_error(priv->pdev, mapping)) {
 162                                 dev_kfree_skb_any(skb);
 163                                 dev_err(&priv->pdev->dev,
 164                                         "RX DMA Mapping error\n");
 165                                 break;
 166                         }
 167
 168                         desc->host_addr = cpu_to_le32(mapping);
 169                         desc->device_addr = 0;  // FIXME: necessary?
 170                         desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
 171                         desc->flags = 0;
 172                         rx_buf[i] = skb;
 173                 }
 174
 175                 i++;
 176                 idx++;
 177                 i %= ring_limit;
 178         }
 179
 180         wmb();
 181         ring_control->host_idx[ring_index] = cpu_to_le32(idx);
 182 }
 183
 184 static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index,
 185         int ring_index, struct p54p_desc *ring, u32 ring_limit,
 186         struct sk_buff **rx_buf)
 187 {
 188         struct p54p_priv *priv = dev->priv;
 189         struct p54p_ring_control *ring_control = priv->ring_control;
 190         struct p54p_desc *desc;
 191         u32 idx, i;
 192
 193         i = (*index) % ring_limit;
 194         (*index) = idx = le32_to_cpu(ring_control->device_idx[ring_index]);
 195         idx %= ring_limit;
 196         while (i != idx) {
 197                 u16 len;
 198                 struct sk_buff *skb;
 199                 desc = &ring[i];
 200                 len = le16_to_cpu(desc->len);
 201                 skb = rx_buf[i];
 202
 203                 if (!skb) {
 204                         i++;
 205                         i %= ring_limit;
 206                         continue;
 207                 }
 208
 209                 if (unlikely(len > priv->common.rx_mtu)) {
 210                         if (net_ratelimit())
 211                                 dev_err(&priv->pdev->dev, "rx'd frame size "
 212                                         "exceeds length threshold.\n");
 213
 214                         len = priv->common.rx_mtu;
 215                 }
 216                 skb_put(skb, len);
 217
 218                 if (p54_rx(dev, skb)) {
 219                         pci_unmap_single(priv->pdev,
 220                                          le32_to_cpu(desc->host_addr),
 221                                          priv->common.rx_mtu + 32,
 222                                          PCI_DMA_FROMDEVICE);
 223                         rx_buf[i] = NULL;
 224                         desc->host_addr = 0;
 225                 } else {
 226                         skb_trim(skb, 0);
 227                         desc->len = cpu_to_le16(priv->common.rx_mtu + 32);
 228                 }
 229
 230                 i++;
 231                 i %= ring_limit;
 232         }
 233
 234         p54p_refill_rx_ring(dev, ring_index, ring, ring_limit, rx_buf);
 235 }
 236
 237 static void p54p_check_tx_ring(struct ieee80211_hw *dev, u32 *index,
 238         int ring_index, struct p54p_desc *ring, u32 ring_limit,
 239         struct sk_buff **tx_buf)
 240 {
 241         struct p54p_priv *priv = dev->priv;
 242         struct p54p_ring_control *ring_control = priv->ring_control;
 243         struct p54p_desc *desc;
 244         struct sk_buff *skb;
 245         u32 idx, i;
 246
 247         i = (*index) % ring_limit;
 248         (*index) = idx = le32_to_cpu(ring_control->device_idx[1]);
 249         idx %= ring_limit;
 250
 251         while (i != idx) {
 252                 desc = &ring[i];
 253
 254                 skb = tx_buf[i];
 255                 tx_buf[i] = NULL;
 256
 257                 pci_unmap_single(priv->pdev, le32_to_cpu(desc->host_addr),
 258                                  le16_to_cpu(desc->len), PCI_DMA_TODEVICE);
 259
 260                 desc->host_addr = 0;
 261                 desc->device_addr = 0;
 262                 desc->len = 0;
 263                 desc->flags = 0;
 264
 265                 if (skb && FREE_AFTER_TX(skb))
 266                         p54_free_skb(dev, skb);
 267
 268                 i++;
 269                 i %= ring_limit;
 270         }
 271 }
 272
 273 static void p54p_tasklet(unsigned long dev_id)
 274 {
 275         struct ieee80211_hw *dev = (struct ieee80211_hw *)dev_id;
 276         struct p54p_priv *priv = dev->priv;
 277         struct p54p_ring_control *ring_control = priv->ring_control;
 278
 279         p54p_check_tx_ring(dev, &priv->tx_idx_mgmt, 3, ring_control->tx_mgmt,
 280                            ARRAY_SIZE(ring_control->tx_mgmt),
 281                            priv->tx_buf_mgmt);
 282
 283         p54p_check_tx_ring(dev, &priv->tx_idx_data, 1, ring_control->tx_data,
 284                            ARRAY_SIZE(ring_control->tx_data),
 285                            priv->tx_buf_data);
 286
 287         p54p_check_rx_ring(dev, &priv->rx_idx_mgmt, 2, ring_control->rx_mgmt,
 288                 ARRAY_SIZE(ring_control->rx_mgmt), priv->rx_buf_mgmt);
 289
 290         p54p_check_rx_ring(dev, &priv->rx_idx_data, 0, ring_control->rx_data,
 291                 ARRAY_SIZE(ring_control->rx_data), priv->rx_buf_data);
 292
 293         wmb();
 294         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 295 }
 296
 297 static irqreturn_t p54p_interrupt(int irq, void *dev_id)
 298 {
 299         struct ieee80211_hw *dev = dev_id;
 300         struct p54p_priv *priv = dev->priv;
 301         __le32 reg;
 302
 303         reg = P54P_READ(int_ident);
 304         if (unlikely(reg == cpu_to_le32(0xFFFFFFFF))) {
 305                 goto out;
 306         }
 307         P54P_WRITE(int_ack, reg);
 308
 309         reg &= P54P_READ(int_enable);
 310
 311         if (reg & cpu_to_le32(ISL38XX_INT_IDENT_UPDATE))
 312                 tasklet_schedule(&priv->tasklet);
 313         else if (reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT))
 314                 complete(&priv->boot_comp);
 315
 316 out:
 317         return reg ? IRQ_HANDLED : IRQ_NONE;
 318 }
 319
 320 static void p54p_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 321 {
 322         unsigned long flags;
 323         struct p54p_priv *priv = dev->priv;
 324         struct p54p_ring_control *ring_control = priv->ring_control;
 325         struct p54p_desc *desc;
 326         dma_addr_t mapping;
 327         u32 device_idx, idx, i;
 328
 329         spin_lock_irqsave(&priv->lock, flags);
 330         device_idx = le32_to_cpu(ring_control->device_idx[1]);
 331         idx = le32_to_cpu(ring_control->host_idx[1]);
 332         i = idx % ARRAY_SIZE(ring_control->tx_data);
 333
 334         mapping = pci_map_single(priv->pdev, skb->data, skb->len,
 335                                  PCI_DMA_TODEVICE);
 336         if (pci_dma_mapping_error(priv->pdev, mapping)) {
 337                 spin_unlock_irqrestore(&priv->lock, flags);
 338                 p54_free_skb(dev, skb);
 339                 dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
 340                 return ;
 341         }
 342         priv->tx_buf_data[i] = skb;
 343
 344         desc = &ring_control->tx_data[i];
 345         desc->host_addr = cpu_to_le32(mapping);
 346         desc->device_addr = ((struct p54_hdr *)skb->data)->req_id;
 347         desc->len = cpu_to_le16(skb->len);
 348         desc->flags = 0;
 349
 350         wmb();
 351         ring_control->host_idx[1] = cpu_to_le32(idx + 1);
 352         spin_unlock_irqrestore(&priv->lock, flags);
 353
 354         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 355         P54P_READ(dev_int);
 356 }
 357
 358 static void p54p_stop(struct ieee80211_hw *dev)
 359 {
 360         struct p54p_priv *priv = dev->priv;
 361         struct p54p_ring_control *ring_control = priv->ring_control;
 362         unsigned int i;
 363         struct p54p_desc *desc;
 364
 365         P54P_WRITE(int_enable, cpu_to_le32(0));
 366         P54P_READ(int_enable);
 367         udelay(10);
 368
 369         free_irq(priv->pdev->irq, dev);
 370
 371         tasklet_kill(&priv->tasklet);
 372
 373         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
 374
 375         for (i = 0; i < ARRAY_SIZE(priv->rx_buf_data); i++) {
 376                 desc = &ring_control->rx_data[i];
 377                 if (desc->host_addr)
 378                         pci_unmap_single(priv->pdev,
 379                                          le32_to_cpu(desc->host_addr),
 380                                          priv->common.rx_mtu + 32,
 381                                          PCI_DMA_FROMDEVICE);
 382                 kfree_skb(priv->rx_buf_data[i]);
 383                 priv->rx_buf_data[i] = NULL;
 384         }
 385
 386         for (i = 0; i < ARRAY_SIZE(priv->rx_buf_mgmt); i++) {
 387                 desc = &ring_control->rx_mgmt[i];
 388                 if (desc->host_addr)
 389                         pci_unmap_single(priv->pdev,
 390                                          le32_to_cpu(desc->host_addr),
 391                                          priv->common.rx_mtu + 32,
 392                                          PCI_DMA_FROMDEVICE);
 393                 kfree_skb(priv->rx_buf_mgmt[i]);
 394                 priv->rx_buf_mgmt[i] = NULL;
 395         }
 396
 397         for (i = 0; i < ARRAY_SIZE(priv->tx_buf_data); i++) {
 398                 desc = &ring_control->tx_data[i];
 399                 if (desc->host_addr)
 400                         pci_unmap_single(priv->pdev,
 401                                          le32_to_cpu(desc->host_addr),
 402                                          le16_to_cpu(desc->len),
 403                                          PCI_DMA_TODEVICE);
 404
 405                 p54_free_skb(dev, priv->tx_buf_data[i]);
 406                 priv->tx_buf_data[i] = NULL;
 407         }
 408
 409         for (i = 0; i < ARRAY_SIZE(priv->tx_buf_mgmt); i++) {
 410                 desc = &ring_control->tx_mgmt[i];
 411                 if (desc->host_addr)
 412                         pci_unmap_single(priv->pdev,
 413                                          le32_to_cpu(desc->host_addr),
 414                                          le16_to_cpu(desc->len),
 415                                          PCI_DMA_TODEVICE);
 416
 417                 p54_free_skb(dev, priv->tx_buf_mgmt[i]);
 418                 priv->tx_buf_mgmt[i] = NULL;
 419         }
 420
 421         memset(ring_control, 0, sizeof(*ring_control));
 422 }
 423
 424 static int p54p_open(struct ieee80211_hw *dev)
 425 {
 426         struct p54p_priv *priv = dev->priv;
 427         int err;
 428
 429         init_completion(&priv->boot_comp);
 430         err = request_irq(priv->pdev->irq, p54p_interrupt,
 431                           IRQF_SHARED, "p54pci", dev);
 432         if (err) {
 433                 dev_err(&priv->pdev->dev, "failed to register IRQ handler\n");
 434                 return err;
 435         }
 436
 437         memset(priv->ring_control, 0, sizeof(*priv->ring_control));
 438         err = p54p_upload_firmware(dev);
 439         if (err) {
 440                 free_irq(priv->pdev->irq, dev);
 441                 return err;
 442         }
 443         priv->rx_idx_data = priv->tx_idx_data = 0;
 444         priv->rx_idx_mgmt = priv->tx_idx_mgmt = 0;
 445
 446         p54p_refill_rx_ring(dev, 0, priv->ring_control->rx_data,
 447                 ARRAY_SIZE(priv->ring_control->rx_data), priv->rx_buf_data);
 448
 449         p54p_refill_rx_ring(dev, 2, priv->ring_control->rx_mgmt,
 450                 ARRAY_SIZE(priv->ring_control->rx_mgmt), priv->rx_buf_mgmt);
 451
 452         P54P_WRITE(ring_control_base, cpu_to_le32(priv->ring_control_dma));
 453         P54P_READ(ring_control_base);
 454         wmb();
 455         udelay(10);
 456
 457         P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_INIT));
 458         P54P_READ(int_enable);
 459         wmb();
 460         udelay(10);
 461
 462         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_RESET));
 463         P54P_READ(dev_int);
 464
 465         if (!wait_for_completion_interruptible_timeout(&priv->boot_comp, HZ)) {
 466                 printk(KERN_ERR "%s: Cannot boot firmware!\n",
 467                        wiphy_name(dev->wiphy));
 468                 p54p_stop(dev);
 469                 return -ETIMEDOUT;
 470         }
 471
 472         P54P_WRITE(int_enable, cpu_to_le32(ISL38XX_INT_IDENT_UPDATE));
 473         P54P_READ(int_enable);
 474         wmb();
 475         udelay(10);
 476
 477         P54P_WRITE(dev_int, cpu_to_le32(ISL38XX_DEV_INT_UPDATE));
 478         P54P_READ(dev_int);
 479         wmb();
 480         udelay(10);
 481
 482         return 0;
 483 }
 484
 485 static int __devinit p54p_probe(struct pci_dev *pdev,
 486                                 const struct pci_device_id *id)
 487 {
 488         struct p54p_priv *priv;
 489         struct ieee80211_hw *dev;
 490         unsigned long mem_addr, mem_len;
 491         int err;
 492
 493         err = pci_enable_device(pdev);
 494         if (err) {
 495                 dev_err(&pdev->dev, "Cannot enable new PCI device\n");
 496                 return err;
 497         }
 498
 499         mem_addr = pci_resource_start(pdev, 0);
 500         mem_len = pci_resource_len(pdev, 0);
 501         if (mem_len < sizeof(struct p54p_csr)) {
 502                 dev_err(&pdev->dev, "Too short PCI resources\n");
 503                 goto err_disable_dev;
 504         }
 505
 506         err = pci_request_regions(pdev, "p54pci");
 507         if (err) {
 508                 dev_err(&pdev->dev, "Cannot obtain PCI resources\n");
 509                 goto err_disable_dev;
 510         }
 511
 512         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) ||
 513             pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
 514                 dev_err(&pdev->dev, "No suitable DMA available\n");
 515                 goto err_free_reg;
 516         }
 517
 518         pci_set_master(pdev);
 519         pci_try_set_mwi(pdev);
 520
 521         pci_write_config_byte(pdev, 0x40, 0);
 522         pci_write_config_byte(pdev, 0x41, 0);
 523
 524         dev = p54_init_common(sizeof(*priv));
 525         if (!dev) {
 526                 dev_err(&pdev->dev, "ieee80211 alloc failed\n");
 527                 err = -ENOMEM;
 528                 goto err_free_reg;
 529         }
 530
 531         priv = dev->priv;
 532         priv->pdev = pdev;
 533
 534         SET_IEEE80211_DEV(dev, &pdev->dev);
 535         pci_set_drvdata(pdev, dev);
 536
 537         priv->map = ioremap(mem_addr, mem_len);
 538         if (!priv->map) {
 539                 dev_err(&pdev->dev, "Cannot map device memory\n");
 540                 err = -ENOMEM;
 541                 goto err_free_dev;
 542         }
 543
 544         priv->ring_control = pci_alloc_consistent(pdev, sizeof(*priv->ring_control),
 545                                                   &priv->ring_control_dma);
 546         if (!priv->ring_control) {
 547                 dev_err(&pdev->dev, "Cannot allocate rings\n");
 548                 err = -ENOMEM;
 549                 goto err_iounmap;
 550         }
 551         priv->common.open = p54p_open;
 552         priv->common.stop = p54p_stop;
 553         priv->common.tx = p54p_tx;
 554
 555         spin_lock_init(&priv->lock);
 556         tasklet_init(&priv->tasklet, p54p_tasklet, (unsigned long)dev);
 557
 558         err = request_firmware(&priv->firmware, "isl3886pci",
 559                                &priv->pdev->dev);
 560         if (err) {
 561                 dev_err(&pdev->dev, "Cannot find firmware (isl3886pci)\n");
 562                 err = request_firmware(&priv->firmware, "isl3886",
 563                                        &priv->pdev->dev);
 564                 if (err)
 565                         goto err_free_common;
 566         }
 567
 568         err = p54p_open(dev);
 569         if (err)
 570                 goto err_free_common;
 571         err = p54_read_eeprom(dev);
 572         p54p_stop(dev);
 573         if (err)
 574                 goto err_free_common;
 575
 576         err = p54_register_common(dev, &pdev->dev);
 577         if (err)
 578                 goto err_free_common;
 579
 580         return 0;
 581
 582  err_free_common:
 583         release_firmware(priv->firmware);
 584         pci_free_consistent(pdev, sizeof(*priv->ring_control),
 585                             priv->ring_control, priv->ring_control_dma);
 586
 587  err_iounmap:
 588         iounmap(priv->map);
 589
 590  err_free_dev:
 591         pci_set_drvdata(pdev, NULL);
 592         p54_free_common(dev);
 593
 594  err_free_reg:
 595         pci_release_regions(pdev);
 596  err_disable_dev:
 597         pci_disable_device(pdev);
 598         return err;
 599 }
 600
 601 static void __devexit p54p_remove(struct pci_dev *pdev)
 602 {
 603         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 604         struct p54p_priv *priv;
 605
 606         if (!dev)
 607                 return;
 608
 609         p54_unregister_common(dev);
 610         priv = dev->priv;
 611         release_firmware(priv->firmware);
 612         pci_free_consistent(pdev, sizeof(*priv->ring_control),
 613                             priv->ring_control, priv->ring_control_dma);
 614         iounmap(priv->map);
 615         pci_release_regions(pdev);
 616         pci_disable_device(pdev);
 617         p54_free_common(dev);
 618 }
 619
 620 #ifdef CONFIG_PM
 621 static int p54p_suspend(struct pci_dev *pdev, pm_message_t state)
 622 {
 623         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 624         struct p54p_priv *priv = dev->priv;
 625
 626         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
 627                 ieee80211_stop_queues(dev);
 628                 p54p_stop(dev);
 629         }
 630
 631         pci_save_state(pdev);
 632         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 633         return 0;
 634 }
 635
 636 static int p54p_resume(struct pci_dev *pdev)
 637 {
 638         struct ieee80211_hw *dev = pci_get_drvdata(pdev);
 639         struct p54p_priv *priv = dev->priv;
 640
 641         pci_set_power_state(pdev, PCI_D0);
 642         pci_restore_state(pdev);
 643
 644         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED) {
 645                 p54p_open(dev);
 646                 ieee80211_wake_queues(dev);
 647         }
 648
 649         return 0;
 650 }
 651 #endif /* CONFIG_PM */
 652
 653 static struct pci_driver p54p_driver = {
 654         .name           = "p54pci",
 655         .id_table       = p54p_table,
 656         .probe          = p54p_probe,
 657         .remove         = __devexit_p(p54p_remove),
 658 #ifdef CONFIG_PM
 659         .suspend        = p54p_suspend,
 660         .resume         = p54p_resume,
 661 #endif /* CONFIG_PM */
 662 };
 663
 664 static int __init p54p_init(void)
 665 {
 666         return pci_register_driver(&p54p_driver);
 667 }
 668
 669 static void __exit p54p_exit(void)
 670 {
 671         pci_unregister_driver(&p54p_driver);
 672 }
 673
 674 module_init(p54p_init);
 675 module_exit(p54p_exit);