drivers/net/wireless/intersil/p54/p54usb.c

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This source file includes following definitions.
p54u_rx_cb
p54u_tx_cb
p54u_tx_dummy_cb
p54u_free_urbs
p54u_stop
p54u_init_urbs
p54u_open
p54u_lm87_chksum
p54u_tx_lm87
p54u_tx_net2280
p54u_write
p54u_read
p54u_bulk_msg
p54u_device_reset
p54u_firmware_reset_3887
p54u_upload_firmware_3887
p54u_upload_firmware_net2280
p54_find_type
p54u_start_ops
p54u_load_firmware_cb
p54u_load_firmware
p54u_probe
p54u_disconnect
p54u_pre_reset
p54u_resume
p54u_post_reset
p54u_suspend
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 
   3 /*
   4  * Linux device driver for USB based Prism54
   5  *
   6  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   7  *
   8  * Based on the islsm (softmac prism54) driver, which is:
   9  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  10  */
  11 
  12 #include <linux/usb.h>
  13 #include <linux/pci.h>
  14 #include <linux/slab.h>
  15 #include <linux/firmware.h>
  16 #include <linux/etherdevice.h>
  17 #include <linux/delay.h>
  18 #include <linux/crc32.h>
  19 #include <linux/module.h>
  20 #include <net/mac80211.h>
  21 
  22 #include "p54.h"
  23 #include "lmac.h"
  24 #include "p54usb.h"
  25 
  26 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  27 MODULE_DESCRIPTION("Prism54 USB wireless driver");
  28 MODULE_LICENSE("GPL");
  29 MODULE_ALIAS("prism54usb");
  30 MODULE_FIRMWARE("isl3886usb");
  31 MODULE_FIRMWARE("isl3887usb");
  32 
  33 static struct usb_driver p54u_driver;
  34 
  35 /*
  36  * Note:
  37  *
  38  * Always update our wiki's device list (located at:
  39  * http://wireless.kernel.org/en/users/Drivers/p54/devices ),
  40  * whenever you add a new device.
  41  */
  42 
  43 static const struct usb_device_id p54u_table[] = {
  44         /* Version 1 devices (pci chip + net2280) */
  45         {USB_DEVICE(0x0411, 0x0050)},   /* Buffalo WLI2-USB2-G54 */
  46         {USB_DEVICE(0x045e, 0x00c2)},   /* Microsoft MN-710 */
  47         {USB_DEVICE(0x0506, 0x0a11)},   /* 3COM 3CRWE254G72 */
  48         {USB_DEVICE(0x0675, 0x0530)},   /* DrayTek Vigor 530 */
  49         {USB_DEVICE(0x06b9, 0x0120)},   /* Thomson SpeedTouch 120g */
  50         {USB_DEVICE(0x0707, 0xee06)},   /* SMC 2862W-G */
  51         {USB_DEVICE(0x07aa, 0x001c)},   /* Corega CG-WLUSB2GT */
  52         {USB_DEVICE(0x083a, 0x4501)},   /* Accton 802.11g WN4501 USB */
  53         {USB_DEVICE(0x083a, 0x4502)},   /* Siemens Gigaset USB Adapter */
  54         {USB_DEVICE(0x083a, 0x5501)},   /* Phillips CPWUA054 */
  55         {USB_DEVICE(0x0846, 0x4200)},   /* Netgear WG121 */
  56         {USB_DEVICE(0x0846, 0x4210)},   /* Netgear WG121 the second ? */
  57         {USB_DEVICE(0x0846, 0x4220)},   /* Netgear WG111 */
  58         {USB_DEVICE(0x09aa, 0x1000)},   /* Spinnaker Proto board */
  59         {USB_DEVICE(0x0bf8, 0x1007)},   /* Fujitsu E-5400 USB */
  60         {USB_DEVICE(0x0cde, 0x0006)},   /* Medion 40900, Roper Europe */
  61         {USB_DEVICE(0x0db0, 0x6826)},   /* MSI UB54G (MS-6826) */
  62         {USB_DEVICE(0x107b, 0x55f2)},   /* Gateway WGU-210 (Gemtek) */
  63         {USB_DEVICE(0x124a, 0x4023)},   /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
  64         {USB_DEVICE(0x124a, 0x4026)},   /* AirVasT USB wireless device */
  65         {USB_DEVICE(0x1435, 0x0210)},   /* Inventel UR054G */
  66         {USB_DEVICE(0x15a9, 0x0002)},   /* Gemtek WUBI-100GW 802.11g */
  67         {USB_DEVICE(0x1630, 0x0005)},   /* 2Wire 802.11g USB (v1) / Z-Com */
  68         {USB_DEVICE(0x182d, 0x096b)},   /* Sitecom WL-107 */
  69         {USB_DEVICE(0x1915, 0x2234)},   /* Linksys WUSB54G OEM */
  70         {USB_DEVICE(0x1915, 0x2235)},   /* Linksys WUSB54G Portable OEM */
  71         {USB_DEVICE(0x2001, 0x3701)},   /* DLink DWL-G120 Spinnaker */
  72         {USB_DEVICE(0x2001, 0x3703)},   /* DLink DWL-G122 */
  73         {USB_DEVICE(0x2001, 0x3762)},   /* Conceptronic C54U */
  74         {USB_DEVICE(0x5041, 0x2234)},   /* Linksys WUSB54G */
  75         {USB_DEVICE(0x5041, 0x2235)},   /* Linksys WUSB54G Portable */
  76 
  77         /* Version 2 devices (3887) */
  78         {USB_DEVICE(0x0471, 0x1230)},   /* Philips CPWUA054/00 */
  79         {USB_DEVICE(0x050d, 0x7050)},   /* Belkin F5D7050 ver 1000 */
  80         {USB_DEVICE(0x0572, 0x2000)},   /* Cohiba Proto board */
  81         {USB_DEVICE(0x0572, 0x2002)},   /* Cohiba Proto board */
  82         {USB_DEVICE(0x06a9, 0x000e)},   /* Westell 802.11g USB (A90-211WG-01) */
  83         {USB_DEVICE(0x06b9, 0x0121)},   /* Thomson SpeedTouch 121g */
  84         {USB_DEVICE(0x0707, 0xee13)},   /* SMC 2862W-G version 2 */
  85         {USB_DEVICE(0x07aa, 0x0020)},   /* Corega WLUSB2GTST USB */
  86         {USB_DEVICE(0x0803, 0x4310)},   /* Zoom 4410a */
  87         {USB_DEVICE(0x083a, 0x4521)},   /* Siemens Gigaset USB Adapter 54 version 2 */
  88         {USB_DEVICE(0x083a, 0x4531)},   /* T-Com Sinus 154 data II */
  89         {USB_DEVICE(0x083a, 0xc501)},   /* Zoom Wireless-G 4410 */
  90         {USB_DEVICE(0x083a, 0xf503)},   /* Accton FD7050E ver 1010ec  */
  91         {USB_DEVICE(0x0846, 0x4240)},   /* Netgear WG111 (v2) */
  92         {USB_DEVICE(0x0915, 0x2000)},   /* Cohiba Proto board */
  93         {USB_DEVICE(0x0915, 0x2002)},   /* Cohiba Proto board */
  94         {USB_DEVICE(0x0baf, 0x0118)},   /* U.S. Robotics U5 802.11g Adapter*/
  95         {USB_DEVICE(0x0bf8, 0x1009)},   /* FUJITSU E-5400 USB D1700*/
  96         /* {USB_DEVICE(0x0cde, 0x0006)}, * Medion MD40900 already listed above,
  97                                          * just noting it here for clarity */
  98         {USB_DEVICE(0x0cde, 0x0008)},   /* Sagem XG703A */
  99         {USB_DEVICE(0x0cde, 0x0015)},   /* Zcomax XG-705A */
 100         {USB_DEVICE(0x0d8e, 0x3762)},   /* DLink DWL-G120 Cohiba */
 101         {USB_DEVICE(0x124a, 0x4025)},   /* IOGear GWU513 (GW3887IK chip) */
 102         {USB_DEVICE(0x1260, 0xee22)},   /* SMC 2862W-G version 2 */
 103         {USB_DEVICE(0x13b1, 0x000a)},   /* Linksys WUSB54G ver 2 */
 104         {USB_DEVICE(0x13B1, 0x000C)},   /* Linksys WUSB54AG */
 105         {USB_DEVICE(0x1413, 0x5400)},   /* Telsey 802.11g USB2.0 Adapter */
 106         {USB_DEVICE(0x1435, 0x0427)},   /* Inventel UR054G */
 107         /* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
 108         {USB_DEVICE(0x1668, 0x1050)},   /* Actiontec 802UIG-1 */
 109         {USB_DEVICE(0x1740, 0x1000)},   /* Senao NUB-350 */
 110         {USB_DEVICE(0x2001, 0x3704)},   /* DLink DWL-G122 rev A2 */
 111         {USB_DEVICE(0x2001, 0x3705)},   /* D-Link DWL-G120 rev C1 */
 112         {USB_DEVICE(0x413c, 0x5513)},   /* Dell WLA3310 USB Wireless Adapter */
 113         {USB_DEVICE(0x413c, 0x8102)},   /* Spinnaker DUT */
 114         {USB_DEVICE(0x413c, 0x8104)},   /* Cohiba Proto board */
 115         {}
 116 };
 117 
 118 MODULE_DEVICE_TABLE(usb, p54u_table);
 119 
 120 static const struct {
 121         u32 intf;
 122         enum p54u_hw_type type;
 123         const char *fw;
 124         char hw[20];
 125 } p54u_fwlist[__NUM_P54U_HWTYPES] = {
 126         {
 127                 .type = P54U_NET2280,
 128                 .intf = FW_LM86,
 129                 .fw = "isl3886usb",
 130                 .hw = "ISL3886 + net2280",
 131         },
 132         {
 133                 .type = P54U_3887,
 134                 .intf = FW_LM87,
 135                 .fw = "isl3887usb",
 136                 .hw = "ISL3887",
 137         },
 138 };
 139 
 140 static void p54u_rx_cb(struct urb *urb)
 141 {
 142         struct sk_buff *skb = (struct sk_buff *) urb->context;
 143         struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
 144         struct ieee80211_hw *dev = info->dev;
 145         struct p54u_priv *priv = dev->priv;
 146 
 147         skb_unlink(skb, &priv->rx_queue);
 148 
 149         if (unlikely(urb->status)) {
 150                 dev_kfree_skb_irq(skb);
 151                 return;
 152         }
 153 
 154         skb_put(skb, urb->actual_length);
 155 
 156         if (priv->hw_type == P54U_NET2280)
 157                 skb_pull(skb, priv->common.tx_hdr_len);
 158         if (priv->common.fw_interface == FW_LM87) {
 159                 skb_pull(skb, 4);
 160                 skb_put(skb, 4);
 161         }
 162 
 163         if (p54_rx(dev, skb)) {
 164                 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
 165                 if (unlikely(!skb)) {
 166                         /* TODO check rx queue length and refill *somewhere* */
 167                         return;
 168                 }
 169 
 170                 info = (struct p54u_rx_info *) skb->cb;
 171                 info->urb = urb;
 172                 info->dev = dev;
 173                 urb->transfer_buffer = skb_tail_pointer(skb);
 174                 urb->context = skb;
 175         } else {
 176                 if (priv->hw_type == P54U_NET2280)
 177                         skb_push(skb, priv->common.tx_hdr_len);
 178                 if (priv->common.fw_interface == FW_LM87) {
 179                         skb_push(skb, 4);
 180                         skb_put(skb, 4);
 181                 }
 182                 skb_reset_tail_pointer(skb);
 183                 skb_trim(skb, 0);
 184                 urb->transfer_buffer = skb_tail_pointer(skb);
 185         }
 186         skb_queue_tail(&priv->rx_queue, skb);
 187         usb_anchor_urb(urb, &priv->submitted);
 188         if (usb_submit_urb(urb, GFP_ATOMIC)) {
 189                 skb_unlink(skb, &priv->rx_queue);
 190                 usb_unanchor_urb(urb);
 191                 dev_kfree_skb_irq(skb);
 192         }
 193 }
 194 
 195 static void p54u_tx_cb(struct urb *urb)
 196 {
 197         struct sk_buff *skb = urb->context;
 198         struct ieee80211_hw *dev =
 199                 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
 200 
 201         p54_free_skb(dev, skb);
 202 }
 203 
 204 static void p54u_tx_dummy_cb(struct urb *urb) { }
 205 
 206 static void p54u_free_urbs(struct ieee80211_hw *dev)
 207 {
 208         struct p54u_priv *priv = dev->priv;
 209         usb_kill_anchored_urbs(&priv->submitted);
 210 }
 211 
 212 static void p54u_stop(struct ieee80211_hw *dev)
 213 {
 214         /*
 215          * TODO: figure out how to reliably stop the 3887 and net2280 so
 216          * the hardware is still usable next time we want to start it.
 217          * until then, we just stop listening to the hardware..
 218          */
 219         p54u_free_urbs(dev);
 220 }
 221 
 222 static int p54u_init_urbs(struct ieee80211_hw *dev)
 223 {
 224         struct p54u_priv *priv = dev->priv;
 225         struct urb *entry = NULL;
 226         struct sk_buff *skb;
 227         struct p54u_rx_info *info;
 228         int ret = 0;
 229 
 230         while (skb_queue_len(&priv->rx_queue) < 32) {
 231                 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
 232                 if (!skb) {
 233                         ret = -ENOMEM;
 234                         goto err;
 235                 }
 236                 entry = usb_alloc_urb(0, GFP_KERNEL);
 237                 if (!entry) {
 238                         ret = -ENOMEM;
 239                         goto err;
 240                 }
 241 
 242                 usb_fill_bulk_urb(entry, priv->udev,
 243                                   usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
 244                                   skb_tail_pointer(skb),
 245                                   priv->common.rx_mtu + 32, p54u_rx_cb, skb);
 246                 info = (struct p54u_rx_info *) skb->cb;
 247                 info->urb = entry;
 248                 info->dev = dev;
 249                 skb_queue_tail(&priv->rx_queue, skb);
 250 
 251                 usb_anchor_urb(entry, &priv->submitted);
 252                 ret = usb_submit_urb(entry, GFP_KERNEL);
 253                 if (ret) {
 254                         skb_unlink(skb, &priv->rx_queue);
 255                         usb_unanchor_urb(entry);
 256                         goto err;
 257                 }
 258                 usb_free_urb(entry);
 259                 entry = NULL;
 260         }
 261 
 262         return 0;
 263 
 264  err:
 265         usb_free_urb(entry);
 266         kfree_skb(skb);
 267         p54u_free_urbs(dev);
 268         return ret;
 269 }
 270 
 271 static int p54u_open(struct ieee80211_hw *dev)
 272 {
 273         /*
 274          * TODO: Because we don't know how to reliably stop the 3887 and
 275          * the isl3886+net2280, other than brutally cut off all
 276          * communications. We have to reinitialize the urbs on every start.
 277          */
 278         return p54u_init_urbs(dev);
 279 }
 280 
 281 static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
 282 {
 283         u32 chk = 0;
 284 
 285         length >>= 2;
 286         while (length--) {
 287                 chk ^= le32_to_cpu(*data++);
 288                 chk = (chk >> 5) ^ (chk << 3);
 289         }
 290 
 291         return cpu_to_le32(chk);
 292 }
 293 
 294 static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
 295 {
 296         struct p54u_priv *priv = dev->priv;
 297         struct urb *data_urb;
 298         struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
 299 
 300         data_urb = usb_alloc_urb(0, GFP_ATOMIC);
 301         if (!data_urb) {
 302                 p54_free_skb(dev, skb);
 303                 return;
 304         }
 305 
 306         hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
 307         hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
 308 
 309         usb_fill_bulk_urb(data_urb, priv->udev,
 310                           usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
 311                           hdr, skb->len + sizeof(*hdr),  FREE_AFTER_TX(skb) ?
 312                           p54u_tx_cb : p54u_tx_dummy_cb, skb);
 313         data_urb->transfer_flags |= URB_ZERO_PACKET;
 314 
 315         usb_anchor_urb(data_urb, &priv->submitted);
 316         if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
 317                 usb_unanchor_urb(data_urb);
 318                 p54_free_skb(dev, skb);
 319         }
 320         usb_free_urb(data_urb);
 321 }
 322 
 323 static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
 324 {
 325         struct p54u_priv *priv = dev->priv;
 326         struct urb *int_urb = NULL, *data_urb = NULL;
 327         struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
 328         struct net2280_reg_write *reg = NULL;
 329         int err = -ENOMEM;
 330 
 331         reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
 332         if (!reg)
 333                 goto out;
 334 
 335         int_urb = usb_alloc_urb(0, GFP_ATOMIC);
 336         if (!int_urb)
 337                 goto out;
 338 
 339         data_urb = usb_alloc_urb(0, GFP_ATOMIC);
 340         if (!data_urb)
 341                 goto out;
 342 
 343         reg->port = cpu_to_le16(NET2280_DEV_U32);
 344         reg->addr = cpu_to_le32(P54U_DEV_BASE);
 345         reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
 346 
 347         memset(hdr, 0, sizeof(*hdr));
 348         hdr->len = cpu_to_le16(skb->len);
 349         hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
 350 
 351         usb_fill_bulk_urb(int_urb, priv->udev,
 352                 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
 353                 p54u_tx_dummy_cb, dev);
 354 
 355         /*
 356          * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
 357          * free what is inside the transfer_buffer after the last reference to
 358          * the int_urb is dropped.
 359          */
 360         int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
 361         reg = NULL;
 362 
 363         usb_fill_bulk_urb(data_urb, priv->udev,
 364                           usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
 365                           hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
 366                           p54u_tx_cb : p54u_tx_dummy_cb, skb);
 367         data_urb->transfer_flags |= URB_ZERO_PACKET;
 368 
 369         usb_anchor_urb(int_urb, &priv->submitted);
 370         err = usb_submit_urb(int_urb, GFP_ATOMIC);
 371         if (err) {
 372                 usb_unanchor_urb(int_urb);
 373                 goto out;
 374         }
 375 
 376         usb_anchor_urb(data_urb, &priv->submitted);
 377         err = usb_submit_urb(data_urb, GFP_ATOMIC);
 378         if (err) {
 379                 usb_unanchor_urb(data_urb);
 380                 goto out;
 381         }
 382 out:
 383         usb_free_urb(int_urb);
 384         usb_free_urb(data_urb);
 385 
 386         if (err) {
 387                 kfree(reg);
 388                 p54_free_skb(dev, skb);
 389         }
 390 }
 391 
 392 static int p54u_write(struct p54u_priv *priv,
 393                       struct net2280_reg_write *buf,
 394                       enum net2280_op_type type,
 395                       __le32 addr, __le32 val)
 396 {
 397         unsigned int ep;
 398         int alen;
 399 
 400         if (type & 0x0800)
 401                 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
 402         else
 403                 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
 404 
 405         buf->port = cpu_to_le16(type);
 406         buf->addr = addr;
 407         buf->val = val;
 408 
 409         return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
 410 }
 411 
 412 static int p54u_read(struct p54u_priv *priv, void *buf,
 413                      enum net2280_op_type type,
 414                      __le32 addr, __le32 *val)
 415 {
 416         struct net2280_reg_read *read = buf;
 417         __le32 *reg = buf;
 418         unsigned int ep;
 419         int alen, err;
 420 
 421         if (type & 0x0800)
 422                 ep = P54U_PIPE_DEV;
 423         else
 424                 ep = P54U_PIPE_BRG;
 425 
 426         read->port = cpu_to_le16(type);
 427         read->addr = addr;
 428 
 429         err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
 430                            read, sizeof(*read), &alen, 1000);
 431         if (err)
 432                 return err;
 433 
 434         err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
 435                            reg, sizeof(*reg), &alen, 1000);
 436         if (err)
 437                 return err;
 438 
 439         *val = *reg;
 440         return 0;
 441 }
 442 
 443 static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
 444                          void *data, size_t len)
 445 {
 446         int alen;
 447         return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
 448                             data, len, &alen, 2000);
 449 }
 450 
 451 static int p54u_device_reset(struct ieee80211_hw *dev)
 452 {
 453         struct p54u_priv *priv = dev->priv;
 454         int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
 455 
 456         if (lock) {
 457                 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
 458                 if (ret < 0) {
 459                         dev_err(&priv->udev->dev, "(p54usb) unable to lock "
 460                                 "device for reset (%d)!\n", ret);
 461                         return ret;
 462                 }
 463         }
 464 
 465         ret = usb_reset_device(priv->udev);
 466         if (lock)
 467                 usb_unlock_device(priv->udev);
 468 
 469         if (ret)
 470                 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
 471                         "device (%d)!\n", ret);
 472 
 473         return ret;
 474 }
 475 
 476 static const char p54u_romboot_3887[] = "~~~~";
 477 static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
 478 {
 479         struct p54u_priv *priv = dev->priv;
 480         u8 *buf;
 481         int ret;
 482 
 483         buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
 484         if (!buf)
 485                 return -ENOMEM;
 486         ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
 487                             buf, 4);
 488         kfree(buf);
 489         if (ret)
 490                 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
 491                         "boot ROM (%d)!\n", ret);
 492 
 493         return ret;
 494 }
 495 
 496 static const char p54u_firmware_upload_3887[] = "<\r";
 497 static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
 498 {
 499         struct p54u_priv *priv = dev->priv;
 500         int err, alen;
 501         u8 carry = 0;
 502         u8 *buf, *tmp;
 503         const u8 *data;
 504         unsigned int left, remains, block_size;
 505         struct x2_header *hdr;
 506         unsigned long timeout;
 507 
 508         err = p54u_firmware_reset_3887(dev);
 509         if (err)
 510                 return err;
 511 
 512         tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
 513         if (!buf)
 514                 return -ENOMEM;
 515 
 516         left = block_size = min_t(size_t, P54U_FW_BLOCK, priv->fw->size);
 517         strcpy(buf, p54u_firmware_upload_3887);
 518         left -= strlen(p54u_firmware_upload_3887);
 519         tmp += strlen(p54u_firmware_upload_3887);
 520 
 521         data = priv->fw->data;
 522         remains = priv->fw->size;
 523 
 524         hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
 525         memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
 526         hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
 527         hdr->fw_length = cpu_to_le32(priv->fw->size);
 528         hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
 529                                          sizeof(u32)*2));
 530         left -= sizeof(*hdr);
 531         tmp += sizeof(*hdr);
 532 
 533         while (remains) {
 534                 while (left--) {
 535                         if (carry) {
 536                                 *tmp++ = carry;
 537                                 carry = 0;
 538                                 remains--;
 539                                 continue;
 540                         }
 541                         switch (*data) {
 542                         case '~':
 543                                 *tmp++ = '}';
 544                                 carry = '^';
 545                                 break;
 546                         case '}':
 547                                 *tmp++ = '}';
 548                                 carry = ']';
 549                                 break;
 550                         default:
 551                                 *tmp++ = *data;
 552                                 remains--;
 553                                 break;
 554                         }
 555                         data++;
 556                 }
 557 
 558                 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
 559                 if (err) {
 560                         dev_err(&priv->udev->dev, "(p54usb) firmware "
 561                                                   "upload failed!\n");
 562                         goto err_upload_failed;
 563                 }
 564 
 565                 tmp = buf;
 566                 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
 567         }
 568 
 569         *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
 570                                                  priv->fw->size));
 571         err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
 572         if (err) {
 573                 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
 574                 goto err_upload_failed;
 575         }
 576         timeout = jiffies + msecs_to_jiffies(1000);
 577         while (!(err = usb_bulk_msg(priv->udev,
 578                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
 579                 if (alen > 2 && !memcmp(buf, "OK", 2))
 580                         break;
 581 
 582                 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
 583                         err = -EINVAL;
 584                         break;
 585                 }
 586 
 587                 if (time_after(jiffies, timeout)) {
 588                         dev_err(&priv->udev->dev, "(p54usb) firmware boot "
 589                                                   "timed out!\n");
 590                         err = -ETIMEDOUT;
 591                         break;
 592                 }
 593         }
 594         if (err) {
 595                 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
 596                 goto err_upload_failed;
 597         }
 598 
 599         buf[0] = 'g';
 600         buf[1] = '\r';
 601         err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
 602         if (err) {
 603                 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
 604                 goto err_upload_failed;
 605         }
 606 
 607         timeout = jiffies + msecs_to_jiffies(1000);
 608         while (!(err = usb_bulk_msg(priv->udev,
 609                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
 610                 if (alen > 0 && buf[0] == 'g')
 611                         break;
 612 
 613                 if (time_after(jiffies, timeout)) {
 614                         err = -ETIMEDOUT;
 615                         break;
 616                 }
 617         }
 618         if (err)
 619                 goto err_upload_failed;
 620 
 621 err_upload_failed:
 622         kfree(buf);
 623         return err;
 624 }
 625 
 626 static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
 627 {
 628         struct p54u_priv *priv = dev->priv;
 629         const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
 630         int err, alen;
 631         void *buf;
 632         __le32 reg;
 633         unsigned int remains, offset;
 634         const u8 *data;
 635 
 636         buf = kmalloc(512, GFP_KERNEL);
 637         if (!buf)
 638                 return -ENOMEM;
 639 
 640 #define P54U_WRITE(type, addr, data) \
 641         do {\
 642                 err = p54u_write(priv, buf, type,\
 643                                  cpu_to_le32((u32)(unsigned long)addr), data);\
 644                 if (err) \
 645                         goto fail;\
 646         } while (0)
 647 
 648 #define P54U_READ(type, addr) \
 649         do {\
 650                 err = p54u_read(priv, buf, type,\
 651                                 cpu_to_le32((u32)(unsigned long)addr), &reg);\
 652                 if (err)\
 653                         goto fail;\
 654         } while (0)
 655 
 656         /* power down net2280 bridge */
 657         P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
 658         reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
 659         reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
 660         P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
 661 
 662         mdelay(100);
 663 
 664         /* power up bridge */
 665         reg |= cpu_to_le32(P54U_BRG_POWER_UP);
 666         reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
 667         P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
 668 
 669         mdelay(100);
 670 
 671         P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
 672                    cpu_to_le32(NET2280_CLK_30Mhz |
 673                                NET2280_PCI_ENABLE |
 674                                NET2280_PCI_SOFT_RESET));
 675 
 676         mdelay(20);
 677 
 678         P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
 679                    cpu_to_le32(PCI_COMMAND_MEMORY |
 680                                PCI_COMMAND_MASTER));
 681 
 682         P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
 683                    cpu_to_le32(NET2280_BASE));
 684 
 685         P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
 686         reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
 687         P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
 688 
 689         // TODO: we really need this?
 690         P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
 691 
 692         P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
 693                    cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
 694         P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
 695                    cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
 696 
 697         P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
 698                    cpu_to_le32(NET2280_BASE2));
 699 
 700         /* finally done setting up the bridge */
 701 
 702         P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
 703                    cpu_to_le32(PCI_COMMAND_MEMORY |
 704                                PCI_COMMAND_MASTER));
 705 
 706         P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
 707         P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
 708                    cpu_to_le32(P54U_DEV_BASE));
 709 
 710         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
 711         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
 712                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
 713 
 714         /* do romboot */
 715         P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
 716 
 717         P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
 718         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 719         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
 720         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
 721         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 722 
 723         mdelay(20);
 724 
 725         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
 726         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 727 
 728         mdelay(20);
 729 
 730         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 731         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 732 
 733         mdelay(100);
 734 
 735         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
 736         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
 737 
 738         /* finally, we can upload firmware now! */
 739         remains = priv->fw->size;
 740         data = priv->fw->data;
 741         offset = ISL38XX_DEV_FIRMWARE_ADDR;
 742 
 743         while (remains) {
 744                 unsigned int block_len = min(remains, (unsigned int)512);
 745                 memcpy(buf, data, block_len);
 746 
 747                 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
 748                 if (err) {
 749                         dev_err(&priv->udev->dev, "(p54usb) firmware block "
 750                                                   "upload failed\n");
 751                         goto fail;
 752                 }
 753 
 754                 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
 755                            cpu_to_le32(0xc0000f00));
 756 
 757                 P54U_WRITE(NET2280_DEV_U32,
 758                            0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
 759                 P54U_WRITE(NET2280_DEV_U32,
 760                            0x0020 | (unsigned long)&devreg->direct_mem_win,
 761                            cpu_to_le32(1));
 762 
 763                 P54U_WRITE(NET2280_DEV_U32,
 764                            0x0024 | (unsigned long)&devreg->direct_mem_win,
 765                            cpu_to_le32(block_len));
 766                 P54U_WRITE(NET2280_DEV_U32,
 767                            0x0028 | (unsigned long)&devreg->direct_mem_win,
 768                            cpu_to_le32(offset));
 769 
 770                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
 771                            cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
 772                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
 773                            cpu_to_le32(block_len >> 2));
 774                 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
 775                            cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
 776 
 777                 mdelay(10);
 778 
 779                 P54U_READ(NET2280_DEV_U32,
 780                           0x002C | (unsigned long)&devreg->direct_mem_win);
 781                 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
 782                     !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
 783                         dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
 784                                                   "transfer failed\n");
 785                         goto fail;
 786                 }
 787 
 788                 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
 789                            cpu_to_le32(NET2280_FIFO_FLUSH));
 790 
 791                 remains -= block_len;
 792                 data += block_len;
 793                 offset += block_len;
 794         }
 795 
 796         /* do ramboot */
 797         P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
 798         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 799         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
 800         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
 801         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 802 
 803         mdelay(20);
 804 
 805         reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
 806         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 807 
 808         reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
 809         P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
 810 
 811         mdelay(100);
 812 
 813         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
 814         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
 815 
 816         /* start up the firmware */
 817         P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
 818                    cpu_to_le32(ISL38XX_INT_IDENT_INIT));
 819 
 820         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
 821                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
 822 
 823         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
 824                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
 825                                NET2280_USB_INTERRUPT_ENABLE));
 826 
 827         P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
 828                    cpu_to_le32(ISL38XX_DEV_INT_RESET));
 829 
 830         err = usb_interrupt_msg(priv->udev,
 831                                 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
 832                                 buf, sizeof(__le32), &alen, 1000);
 833         if (err || alen != sizeof(__le32))
 834                 goto fail;
 835 
 836         P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
 837         P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
 838 
 839         if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
 840                 err = -EINVAL;
 841 
 842         P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
 843         P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
 844                    cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
 845 
 846 #undef P54U_WRITE
 847 #undef P54U_READ
 848 
 849 fail:
 850         kfree(buf);
 851         return err;
 852 }
 853 
 854 static int p54_find_type(struct p54u_priv *priv)
 855 {
 856         int i;
 857 
 858         for (i = 0; i < __NUM_P54U_HWTYPES; i++)
 859                 if (p54u_fwlist[i].type == priv->hw_type)
 860                         break;
 861         if (i == __NUM_P54U_HWTYPES)
 862                 return -EOPNOTSUPP;
 863 
 864         return i;
 865 }
 866 
 867 static int p54u_start_ops(struct p54u_priv *priv)
 868 {
 869         struct ieee80211_hw *dev = priv->common.hw;
 870         int ret;
 871 
 872         ret = p54_parse_firmware(dev, priv->fw);
 873         if (ret)
 874                 goto err_out;
 875 
 876         ret = p54_find_type(priv);
 877         if (ret < 0)
 878                 goto err_out;
 879 
 880         if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
 881                 dev_err(&priv->udev->dev, "wrong firmware, please get "
 882                         "a firmware for \"%s\" and try again.\n",
 883                         p54u_fwlist[ret].hw);
 884                 ret = -ENODEV;
 885                 goto err_out;
 886         }
 887 
 888         ret = priv->upload_fw(dev);
 889         if (ret)
 890                 goto err_out;
 891 
 892         ret = p54u_open(dev);
 893         if (ret)
 894                 goto err_out;
 895 
 896         ret = p54_read_eeprom(dev);
 897         if (ret)
 898                 goto err_stop;
 899 
 900         p54u_stop(dev);
 901 
 902         ret = p54_register_common(dev, &priv->udev->dev);
 903         if (ret)
 904                 goto err_stop;
 905 
 906         return 0;
 907 
 908 err_stop:
 909         p54u_stop(dev);
 910 
 911 err_out:
 912         /*
 913          * p54u_disconnect will do the rest of the
 914          * cleanup
 915          */
 916         return ret;
 917 }
 918 
 919 static void p54u_load_firmware_cb(const struct firmware *firmware,
 920                                   void *context)
 921 {
 922         struct p54u_priv *priv = context;
 923         struct usb_device *udev = priv->udev;
 924         struct usb_interface *intf = priv->intf;
 925         int err;
 926 
 927         if (firmware) {
 928                 priv->fw = firmware;
 929                 err = p54u_start_ops(priv);
 930         } else {
 931                 err = -ENOENT;
 932                 dev_err(&udev->dev, "Firmware not found.\n");
 933         }
 934 
 935         complete(&priv->fw_wait_load);
 936         /*
 937          * At this point p54u_disconnect may have already freed
 938          * the "priv" context. Do not use it anymore!
 939          */
 940         priv = NULL;
 941 
 942         if (err) {
 943                 dev_err(&intf->dev, "failed to initialize device (%d)\n", err);
 944 
 945                 usb_lock_device(udev);
 946                 usb_driver_release_interface(&p54u_driver, intf);
 947                 usb_unlock_device(udev);
 948         }
 949 
 950         usb_put_intf(intf);
 951 }
 952 
 953 static int p54u_load_firmware(struct ieee80211_hw *dev,
 954                               struct usb_interface *intf)
 955 {
 956         struct usb_device *udev = interface_to_usbdev(intf);
 957         struct p54u_priv *priv = dev->priv;
 958         struct device *device = &udev->dev;
 959         int err, i;
 960 
 961         BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
 962 
 963         init_completion(&priv->fw_wait_load);
 964         i = p54_find_type(priv);
 965         if (i < 0)
 966                 return i;
 967 
 968         dev_info(&priv->udev->dev, "Loading firmware file %s\n",
 969                p54u_fwlist[i].fw);
 970 
 971         usb_get_intf(intf);
 972         err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
 973                                       device, GFP_KERNEL, priv,
 974                                       p54u_load_firmware_cb);
 975         if (err) {
 976                 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
 977                                           "(%d)!\n", p54u_fwlist[i].fw, err);
 978                 usb_put_intf(intf);
 979         }
 980 
 981         return err;
 982 }
 983 
 984 static int p54u_probe(struct usb_interface *intf,
 985                                 const struct usb_device_id *id)
 986 {
 987         struct usb_device *udev = interface_to_usbdev(intf);
 988         struct ieee80211_hw *dev;
 989         struct p54u_priv *priv;
 990         int err;
 991         unsigned int i, recognized_pipes;
 992 
 993         dev = p54_init_common(sizeof(*priv));
 994 
 995         if (!dev) {
 996                 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
 997                 return -ENOMEM;
 998         }
 999 
1000         priv = dev->priv;
1001         priv->hw_type = P54U_INVALID_HW;
1002 
1003         SET_IEEE80211_DEV(dev, &intf->dev);
1004         usb_set_intfdata(intf, dev);
1005         priv->udev = udev;
1006         priv->intf = intf;
1007         skb_queue_head_init(&priv->rx_queue);
1008         init_usb_anchor(&priv->submitted);
1009 
1010         /* really lazy and simple way of figuring out if we're a 3887 */
1011         /* TODO: should just stick the identification in the device table */
1012         i = intf->altsetting->desc.bNumEndpoints;
1013         recognized_pipes = 0;
1014         while (i--) {
1015                 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
1016                 case P54U_PIPE_DATA:
1017                 case P54U_PIPE_MGMT:
1018                 case P54U_PIPE_BRG:
1019                 case P54U_PIPE_DEV:
1020                 case P54U_PIPE_DATA | USB_DIR_IN:
1021                 case P54U_PIPE_MGMT | USB_DIR_IN:
1022                 case P54U_PIPE_BRG | USB_DIR_IN:
1023                 case P54U_PIPE_DEV | USB_DIR_IN:
1024                 case P54U_PIPE_INT | USB_DIR_IN:
1025                         recognized_pipes++;
1026                 }
1027         }
1028         priv->common.open = p54u_open;
1029         priv->common.stop = p54u_stop;
1030         if (recognized_pipes < P54U_PIPE_NUMBER) {
1031 #ifdef CONFIG_PM
1032                 /* ISL3887 needs a full reset on resume */
1033                 udev->reset_resume = 1;
1034 #endif /* CONFIG_PM */
1035                 err = p54u_device_reset(dev);
1036 
1037                 priv->hw_type = P54U_3887;
1038                 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
1039                 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
1040                 priv->common.tx = p54u_tx_lm87;
1041                 priv->upload_fw = p54u_upload_firmware_3887;
1042         } else {
1043                 priv->hw_type = P54U_NET2280;
1044                 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
1045                 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
1046                 priv->common.tx = p54u_tx_net2280;
1047                 priv->upload_fw = p54u_upload_firmware_net2280;
1048         }
1049         err = p54u_load_firmware(dev, intf);
1050         if (err)
1051                 p54_free_common(dev);
1052         return err;
1053 }
1054 
1055 static void p54u_disconnect(struct usb_interface *intf)
1056 {
1057         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1058         struct p54u_priv *priv;
1059 
1060         if (!dev)
1061                 return;
1062 
1063         priv = dev->priv;
1064         wait_for_completion(&priv->fw_wait_load);
1065         p54_unregister_common(dev);
1066 
1067         release_firmware(priv->fw);
1068         p54_free_common(dev);
1069 }
1070 
1071 static int p54u_pre_reset(struct usb_interface *intf)
1072 {
1073         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1074 
1075         if (!dev)
1076                 return -ENODEV;
1077 
1078         p54u_stop(dev);
1079         return 0;
1080 }
1081 
1082 static int p54u_resume(struct usb_interface *intf)
1083 {
1084         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1085         struct p54u_priv *priv;
1086 
1087         if (!dev)
1088                 return -ENODEV;
1089 
1090         priv = dev->priv;
1091         if (unlikely(!(priv->upload_fw && priv->fw)))
1092                 return 0;
1093 
1094         return priv->upload_fw(dev);
1095 }
1096 
1097 static int p54u_post_reset(struct usb_interface *intf)
1098 {
1099         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1100         struct p54u_priv *priv;
1101         int err;
1102 
1103         err = p54u_resume(intf);
1104         if (err)
1105                 return err;
1106 
1107         /* reinitialize old device state */
1108         priv = dev->priv;
1109         if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1110                 ieee80211_restart_hw(dev);
1111 
1112         return 0;
1113 }
1114 
1115 #ifdef CONFIG_PM
1116 
1117 static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119         return p54u_pre_reset(intf);
1120 }
1121 
1122 #endif /* CONFIG_PM */
1123 
1124 static struct usb_driver p54u_driver = {
1125         .name   = "p54usb",
1126         .id_table = p54u_table,
1127         .probe = p54u_probe,
1128         .disconnect = p54u_disconnect,
1129         .pre_reset = p54u_pre_reset,
1130         .post_reset = p54u_post_reset,
1131 #ifdef CONFIG_PM
1132         .suspend = p54u_suspend,
1133         .resume = p54u_resume,
1134         .reset_resume = p54u_resume,
1135 #endif /* CONFIG_PM */
1136         .soft_unbind = 1,
1137         .disable_hub_initiated_lpm = 1,
1138 };
1139 
1140 module_usb_driver(p54u_driver);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/intersil/p54/p54usb.c

DEFINITIONS
