rtl8187: add USB ID for Linksys WUSB54GC-EU v2 USB wifi dongle
[linux-2.6.git] / drivers / net / wireless / rtl818x / rtl8187_dev.c
1 /*
2  * Linux device driver for RTL8187
3  *
4  * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
5  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
6  *
7  * Based on the r8187 driver, which is:
8  * Copyright 2005 Andrea Merello <andreamrl@tiscali.it>, et al.
9  *
10  * The driver was extended to the RTL8187B in 2008 by:
11  *      Herton Ronaldo Krzesinski <herton@mandriva.com.br>
12  *      Hin-Tak Leung <htl10@users.sourceforge.net>
13  *      Larry Finger <Larry.Finger@lwfinger.net>
14  *
15  * Magic delays and register offsets below are taken from the original
16  * r8187 driver sources.  Thanks to Realtek for their support!
17  *
18  * This program is free software; you can redistribute it and/or modify
19  * it under the terms of the GNU General Public License version 2 as
20  * published by the Free Software Foundation.
21  */
22
23 #include <linux/init.h>
24 #include <linux/usb.h>
25 #include <linux/delay.h>
26 #include <linux/etherdevice.h>
27 #include <linux/eeprom_93cx6.h>
28 #include <net/mac80211.h>
29
30 #include "rtl8187.h"
31 #include "rtl8187_rtl8225.h"
32
33 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
34 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
35 MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>");
36 MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>");
37 MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>");
38 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
39 MODULE_LICENSE("GPL");
40
41 static struct usb_device_id rtl8187_table[] __devinitdata = {
42         /* Asus */
43         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
44         /* Belkin */
45         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
46         /* Realtek */
47         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
48         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
49         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
50         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
51         /* Surecom */
52         {USB_DEVICE(0x0769, 0x11F2), .driver_info = DEVICE_RTL8187},
53         /* Logitech */
54         {USB_DEVICE(0x0789, 0x010C), .driver_info = DEVICE_RTL8187},
55         /* Netgear */
56         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
57         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
58         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
59         /* HP */
60         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
61         /* Sitecom */
62         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
63         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
64         /* Sphairon Access Systems GmbH */
65         {USB_DEVICE(0x114B, 0x0150), .driver_info = DEVICE_RTL8187},
66         /* Dick Smith Electronics */
67         {USB_DEVICE(0x1371, 0x9401), .driver_info = DEVICE_RTL8187},
68         /* Abocom */
69         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
70         /* Qcom */
71         {USB_DEVICE(0x18E8, 0x6232), .driver_info = DEVICE_RTL8187},
72         /* AirLive */
73         {USB_DEVICE(0x1b75, 0x8187), .driver_info = DEVICE_RTL8187},
74         /* Linksys */
75         {USB_DEVICE(0x1737, 0x0073), .driver_info = DEVICE_RTL8187B},
76         {}
77 };
78
79 MODULE_DEVICE_TABLE(usb, rtl8187_table);
80
81 static const struct ieee80211_rate rtl818x_rates[] = {
82         { .bitrate = 10, .hw_value = 0, },
83         { .bitrate = 20, .hw_value = 1, },
84         { .bitrate = 55, .hw_value = 2, },
85         { .bitrate = 110, .hw_value = 3, },
86         { .bitrate = 60, .hw_value = 4, },
87         { .bitrate = 90, .hw_value = 5, },
88         { .bitrate = 120, .hw_value = 6, },
89         { .bitrate = 180, .hw_value = 7, },
90         { .bitrate = 240, .hw_value = 8, },
91         { .bitrate = 360, .hw_value = 9, },
92         { .bitrate = 480, .hw_value = 10, },
93         { .bitrate = 540, .hw_value = 11, },
94 };
95
96 static const struct ieee80211_channel rtl818x_channels[] = {
97         { .center_freq = 2412 },
98         { .center_freq = 2417 },
99         { .center_freq = 2422 },
100         { .center_freq = 2427 },
101         { .center_freq = 2432 },
102         { .center_freq = 2437 },
103         { .center_freq = 2442 },
104         { .center_freq = 2447 },
105         { .center_freq = 2452 },
106         { .center_freq = 2457 },
107         { .center_freq = 2462 },
108         { .center_freq = 2467 },
109         { .center_freq = 2472 },
110         { .center_freq = 2484 },
111 };
112
113 static void rtl8187_iowrite_async_cb(struct urb *urb)
114 {
115         kfree(urb->context);
116 }
117
118 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
119                                   void *data, u16 len)
120 {
121         struct usb_ctrlrequest *dr;
122         struct urb *urb;
123         struct rtl8187_async_write_data {
124                 u8 data[4];
125                 struct usb_ctrlrequest dr;
126         } *buf;
127         int rc;
128
129         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
130         if (!buf)
131                 return;
132
133         urb = usb_alloc_urb(0, GFP_ATOMIC);
134         if (!urb) {
135                 kfree(buf);
136                 return;
137         }
138
139         dr = &buf->dr;
140
141         dr->bRequestType = RTL8187_REQT_WRITE;
142         dr->bRequest = RTL8187_REQ_SET_REG;
143         dr->wValue = addr;
144         dr->wIndex = 0;
145         dr->wLength = cpu_to_le16(len);
146
147         memcpy(buf, data, len);
148
149         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
150                              (unsigned char *)dr, buf, len,
151                              rtl8187_iowrite_async_cb, buf);
152         usb_anchor_urb(urb, &priv->anchored);
153         rc = usb_submit_urb(urb, GFP_ATOMIC);
154         if (rc < 0) {
155                 kfree(buf);
156                 usb_unanchor_urb(urb);
157         }
158         usb_free_urb(urb);
159 }
160
161 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
162                                            __le32 *addr, u32 val)
163 {
164         __le32 buf = cpu_to_le32(val);
165
166         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
167                               &buf, sizeof(buf));
168 }
169
170 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
171 {
172         struct rtl8187_priv *priv = dev->priv;
173
174         data <<= 8;
175         data |= addr | 0x80;
176
177         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
178         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
179         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
180         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
181 }
182
183 static void rtl8187_tx_cb(struct urb *urb)
184 {
185         struct sk_buff *skb = (struct sk_buff *)urb->context;
186         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
187         struct ieee80211_hw *hw = info->rate_driver_data[0];
188         struct rtl8187_priv *priv = hw->priv;
189
190         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
191                                           sizeof(struct rtl8187_tx_hdr));
192         ieee80211_tx_info_clear_status(info);
193
194         if (!(urb->status) && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
195                 if (priv->is_rtl8187b) {
196                         skb_queue_tail(&priv->b_tx_status.queue, skb);
197
198                         /* queue is "full", discard last items */
199                         while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
200                                 struct sk_buff *old_skb;
201
202                                 dev_dbg(&priv->udev->dev,
203                                         "transmit status queue full\n");
204
205                                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
206                                 ieee80211_tx_status_irqsafe(hw, old_skb);
207                         }
208                         return;
209                 } else {
210                         info->flags |= IEEE80211_TX_STAT_ACK;
211                 }
212         }
213         if (priv->is_rtl8187b)
214                 ieee80211_tx_status_irqsafe(hw, skb);
215         else {
216                 /* Retry information for the RTI8187 is only available by
217                  * reading a register in the device. We are in interrupt mode
218                  * here, thus queue the skb and finish on a work queue. */
219                 skb_queue_tail(&priv->b_tx_status.queue, skb);
220                 queue_delayed_work(hw->workqueue, &priv->work, 0);
221         }
222 }
223
224 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
225 {
226         struct rtl8187_priv *priv = dev->priv;
227         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
228         unsigned int ep;
229         void *buf;
230         struct urb *urb;
231         __le16 rts_dur = 0;
232         u32 flags;
233         int rc;
234
235         urb = usb_alloc_urb(0, GFP_ATOMIC);
236         if (!urb) {
237                 kfree_skb(skb);
238                 return NETDEV_TX_OK;
239         }
240
241         flags = skb->len;
242         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
243
244         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
245         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
246                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
247         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
248                 flags |= RTL818X_TX_DESC_FLAG_RTS;
249                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
250                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
251                                                  skb->len, info);
252         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
253                 flags |= RTL818X_TX_DESC_FLAG_CTS;
254                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
255         }
256
257         if (!priv->is_rtl8187b) {
258                 struct rtl8187_tx_hdr *hdr =
259                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
260                 hdr->flags = cpu_to_le32(flags);
261                 hdr->len = 0;
262                 hdr->rts_duration = rts_dur;
263                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
264                 buf = hdr;
265
266                 ep = 2;
267         } else {
268                 /* fc needs to be calculated before skb_push() */
269                 unsigned int epmap[4] = { 6, 7, 5, 4 };
270                 struct ieee80211_hdr *tx_hdr =
271                         (struct ieee80211_hdr *)(skb->data);
272                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
273
274                 struct rtl8187b_tx_hdr *hdr =
275                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
276                 struct ieee80211_rate *txrate =
277                         ieee80211_get_tx_rate(dev, info);
278                 memset(hdr, 0, sizeof(*hdr));
279                 hdr->flags = cpu_to_le32(flags);
280                 hdr->rts_duration = rts_dur;
281                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
282                 hdr->tx_duration =
283                         ieee80211_generic_frame_duration(dev, priv->vif,
284                                                          skb->len, txrate);
285                 buf = hdr;
286
287                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
288                         ep = 12;
289                 else
290                         ep = epmap[skb_get_queue_mapping(skb)];
291         }
292
293         info->rate_driver_data[0] = dev;
294         info->rate_driver_data[1] = urb;
295
296         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
297                           buf, skb->len, rtl8187_tx_cb, skb);
298         urb->transfer_flags |= URB_ZERO_PACKET;
299         usb_anchor_urb(urb, &priv->anchored);
300         rc = usb_submit_urb(urb, GFP_ATOMIC);
301         if (rc < 0) {
302                 usb_unanchor_urb(urb);
303                 kfree_skb(skb);
304         }
305         usb_free_urb(urb);
306
307         return NETDEV_TX_OK;
308 }
309
310 static void rtl8187_rx_cb(struct urb *urb)
311 {
312         struct sk_buff *skb = (struct sk_buff *)urb->context;
313         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
314         struct ieee80211_hw *dev = info->dev;
315         struct rtl8187_priv *priv = dev->priv;
316         struct ieee80211_rx_status rx_status = { 0 };
317         int rate, signal;
318         u32 flags;
319         u32 quality;
320         unsigned long f;
321
322         spin_lock_irqsave(&priv->rx_queue.lock, f);
323         if (skb->next)
324                 __skb_unlink(skb, &priv->rx_queue);
325         else {
326                 spin_unlock_irqrestore(&priv->rx_queue.lock, f);
327                 return;
328         }
329         spin_unlock_irqrestore(&priv->rx_queue.lock, f);
330         skb_put(skb, urb->actual_length);
331
332         if (unlikely(urb->status)) {
333                 dev_kfree_skb_irq(skb);
334                 return;
335         }
336
337         if (!priv->is_rtl8187b) {
338                 struct rtl8187_rx_hdr *hdr =
339                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
340                 flags = le32_to_cpu(hdr->flags);
341                 /* As with the RTL8187B below, the AGC is used to calculate
342                  * signal strength and quality. In this case, the scaling
343                  * constants are derived from the output of p54usb.
344                  */
345                 quality = 130 - ((41 * hdr->agc) >> 6);
346                 signal = -4 - ((27 * hdr->agc) >> 6);
347                 rx_status.antenna = (hdr->signal >> 7) & 1;
348                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
349         } else {
350                 struct rtl8187b_rx_hdr *hdr =
351                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
352                 /* The Realtek datasheet for the RTL8187B shows that the RX
353                  * header contains the following quantities: signal quality,
354                  * RSSI, AGC, the received power in dB, and the measured SNR.
355                  * In testing, none of these quantities show qualitative
356                  * agreement with AP signal strength, except for the AGC,
357                  * which is inversely proportional to the strength of the
358                  * signal. In the following, the quality and signal strength
359                  * are derived from the AGC. The arbitrary scaling constants
360                  * are chosen to make the results close to the values obtained
361                  * for a BCM4312 using b43 as the driver. The noise is ignored
362                  * for now.
363                  */
364                 flags = le32_to_cpu(hdr->flags);
365                 quality = 170 - hdr->agc;
366                 signal = 14 - hdr->agc / 2;
367                 rx_status.antenna = (hdr->rssi >> 7) & 1;
368                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
369         }
370
371         if (quality > 100)
372                 quality = 100;
373         rx_status.qual = quality;
374         priv->quality = quality;
375         rx_status.signal = signal;
376         priv->signal = signal;
377         rate = (flags >> 20) & 0xF;
378         skb_trim(skb, flags & 0x0FFF);
379         rx_status.rate_idx = rate;
380         rx_status.freq = dev->conf.channel->center_freq;
381         rx_status.band = dev->conf.channel->band;
382         rx_status.flag |= RX_FLAG_TSFT;
383         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
384                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
385         ieee80211_rx_irqsafe(dev, skb, &rx_status);
386
387         skb = dev_alloc_skb(RTL8187_MAX_RX);
388         if (unlikely(!skb)) {
389                 /* TODO check rx queue length and refill *somewhere* */
390                 return;
391         }
392
393         info = (struct rtl8187_rx_info *)skb->cb;
394         info->urb = urb;
395         info->dev = dev;
396         urb->transfer_buffer = skb_tail_pointer(skb);
397         urb->context = skb;
398         skb_queue_tail(&priv->rx_queue, skb);
399
400         usb_anchor_urb(urb, &priv->anchored);
401         if (usb_submit_urb(urb, GFP_ATOMIC)) {
402                 usb_unanchor_urb(urb);
403                 skb_unlink(skb, &priv->rx_queue);
404                 dev_kfree_skb_irq(skb);
405         }
406 }
407
408 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
409 {
410         struct rtl8187_priv *priv = dev->priv;
411         struct urb *entry = NULL;
412         struct sk_buff *skb;
413         struct rtl8187_rx_info *info;
414         int ret = 0;
415
416         while (skb_queue_len(&priv->rx_queue) < 16) {
417                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
418                 if (!skb) {
419                         ret = -ENOMEM;
420                         goto err;
421                 }
422                 entry = usb_alloc_urb(0, GFP_KERNEL);
423                 if (!entry) {
424                         ret = -ENOMEM;
425                         goto err;
426                 }
427                 usb_fill_bulk_urb(entry, priv->udev,
428                                   usb_rcvbulkpipe(priv->udev,
429                                   priv->is_rtl8187b ? 3 : 1),
430                                   skb_tail_pointer(skb),
431                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
432                 info = (struct rtl8187_rx_info *)skb->cb;
433                 info->urb = entry;
434                 info->dev = dev;
435                 skb_queue_tail(&priv->rx_queue, skb);
436                 usb_anchor_urb(entry, &priv->anchored);
437                 ret = usb_submit_urb(entry, GFP_KERNEL);
438                 if (ret) {
439                         skb_unlink(skb, &priv->rx_queue);
440                         usb_unanchor_urb(entry);
441                         goto err;
442                 }
443                 usb_free_urb(entry);
444         }
445         return ret;
446
447 err:
448         usb_free_urb(entry);
449         kfree_skb(skb);
450         usb_kill_anchored_urbs(&priv->anchored);
451         return ret;
452 }
453
454 static void rtl8187b_status_cb(struct urb *urb)
455 {
456         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
457         struct rtl8187_priv *priv = hw->priv;
458         u64 val;
459         unsigned int cmd_type;
460
461         if (unlikely(urb->status))
462                 return;
463
464         /*
465          * Read from status buffer:
466          *
467          * bits [30:31] = cmd type:
468          * - 0 indicates tx beacon interrupt
469          * - 1 indicates tx close descriptor
470          *
471          * In the case of tx beacon interrupt:
472          * [0:9] = Last Beacon CW
473          * [10:29] = reserved
474          * [30:31] = 00b
475          * [32:63] = Last Beacon TSF
476          *
477          * If it's tx close descriptor:
478          * [0:7] = Packet Retry Count
479          * [8:14] = RTS Retry Count
480          * [15] = TOK
481          * [16:27] = Sequence No
482          * [28] = LS
483          * [29] = FS
484          * [30:31] = 01b
485          * [32:47] = unused (reserved?)
486          * [48:63] = MAC Used Time
487          */
488         val = le64_to_cpu(priv->b_tx_status.buf);
489
490         cmd_type = (val >> 30) & 0x3;
491         if (cmd_type == 1) {
492                 unsigned int pkt_rc, seq_no;
493                 bool tok;
494                 struct sk_buff *skb;
495                 struct ieee80211_hdr *ieee80211hdr;
496                 unsigned long flags;
497
498                 pkt_rc = val & 0xFF;
499                 tok = val & (1 << 15);
500                 seq_no = (val >> 16) & 0xFFF;
501
502                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
503                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
504                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
505
506                         /*
507                          * While testing, it was discovered that the seq_no
508                          * doesn't actually contains the sequence number.
509                          * Instead of returning just the 12 bits of sequence
510                          * number, hardware is returning entire sequence control
511                          * (fragment number plus sequence number) in a 12 bit
512                          * only field overflowing after some time. As a
513                          * workaround, just consider the lower bits, and expect
514                          * it's unlikely we wrongly ack some sent data
515                          */
516                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
517                             & 0xFFF) == seq_no)
518                                 break;
519                 }
520                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
521                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
522
523                         __skb_unlink(skb, &priv->b_tx_status.queue);
524                         if (tok)
525                                 info->flags |= IEEE80211_TX_STAT_ACK;
526                         info->status.rates[0].count = pkt_rc + 1;
527
528                         ieee80211_tx_status_irqsafe(hw, skb);
529                 }
530                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
531         }
532
533         usb_anchor_urb(urb, &priv->anchored);
534         if (usb_submit_urb(urb, GFP_ATOMIC))
535                 usb_unanchor_urb(urb);
536 }
537
538 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
539 {
540         struct rtl8187_priv *priv = dev->priv;
541         struct urb *entry;
542         int ret = 0;
543
544         entry = usb_alloc_urb(0, GFP_KERNEL);
545         if (!entry)
546                 return -ENOMEM;
547
548         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
549                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
550                           rtl8187b_status_cb, dev);
551
552         usb_anchor_urb(entry, &priv->anchored);
553         ret = usb_submit_urb(entry, GFP_KERNEL);
554         if (ret)
555                 usb_unanchor_urb(entry);
556         usb_free_urb(entry);
557
558         return ret;
559 }
560
561 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
562 {
563         struct rtl8187_priv *priv = dev->priv;
564         u8 reg;
565         int i;
566
567         reg = rtl818x_ioread8(priv, &priv->map->CMD);
568         reg &= (1 << 1);
569         reg |= RTL818X_CMD_RESET;
570         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
571
572         i = 10;
573         do {
574                 msleep(2);
575                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
576                       RTL818X_CMD_RESET))
577                         break;
578         } while (--i);
579
580         if (!i) {
581                 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
582                 return -ETIMEDOUT;
583         }
584
585         /* reload registers from eeprom */
586         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
587
588         i = 10;
589         do {
590                 msleep(4);
591                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
592                       RTL818X_EEPROM_CMD_CONFIG))
593                         break;
594         } while (--i);
595
596         if (!i) {
597                 printk(KERN_ERR "%s: eeprom reset timeout!\n",
598                        wiphy_name(dev->wiphy));
599                 return -ETIMEDOUT;
600         }
601
602         return 0;
603 }
604
605 static int rtl8187_init_hw(struct ieee80211_hw *dev)
606 {
607         struct rtl8187_priv *priv = dev->priv;
608         u8 reg;
609         int res;
610
611         /* reset */
612         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
613                          RTL818X_EEPROM_CMD_CONFIG);
614         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
615         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
616                          RTL818X_CONFIG3_ANAPARAM_WRITE);
617         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
618                           RTL8187_RTL8225_ANAPARAM_ON);
619         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
620                           RTL8187_RTL8225_ANAPARAM2_ON);
621         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
622                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
623         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
624                          RTL818X_EEPROM_CMD_NORMAL);
625
626         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
627
628         msleep(200);
629         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
630         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
631         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
632         msleep(200);
633
634         res = rtl8187_cmd_reset(dev);
635         if (res)
636                 return res;
637
638         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
639         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
640         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
641                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
642         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
643                           RTL8187_RTL8225_ANAPARAM_ON);
644         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
645                           RTL8187_RTL8225_ANAPARAM2_ON);
646         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
647                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
648         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
649
650         /* setup card */
651         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
652         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
653
654         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
655         rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
656         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
657
658         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
659
660         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
661         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
662         reg &= 0x3F;
663         reg |= 0x80;
664         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
665
666         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
667
668         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
669         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
670         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
671
672         // TODO: set RESP_RATE and BRSR properly
673         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
674         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
675
676         /* host_usb_init */
677         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
678         rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
679         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
680         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
681         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
682         rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
683         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
684         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
685         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
686         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
687         msleep(100);
688
689         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
690         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
691         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
692         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
693                          RTL818X_EEPROM_CMD_CONFIG);
694         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
695         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
696                          RTL818X_EEPROM_CMD_NORMAL);
697         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
698         msleep(100);
699
700         priv->rf->init(dev);
701
702         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
703         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
704         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
705         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
706         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
707         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
708         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
709
710         return 0;
711 }
712
713 static const u8 rtl8187b_reg_table[][3] = {
714         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
715         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
716         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
717         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
718
719         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
720         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
721         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
722         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
723         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
724         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
725
726         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
727         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
728         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
729         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
730         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
731         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
732         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
733         {0x73, 0x9A, 2},
734
735         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
736         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
737         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
738         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
739         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x91, 0x03, 0},
740
741         {0x4C, 0x00, 2}, {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0},
742         {0x8E, 0x08, 0}, {0x8F, 0x00, 0}
743 };
744
745 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
746 {
747         struct rtl8187_priv *priv = dev->priv;
748         int res, i;
749         u8 reg;
750
751         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
752                          RTL818X_EEPROM_CMD_CONFIG);
753
754         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
755         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
756         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
757         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
758                           RTL8187B_RTL8225_ANAPARAM2_ON);
759         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
760                           RTL8187B_RTL8225_ANAPARAM_ON);
761         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
762                          RTL8187B_RTL8225_ANAPARAM3_ON);
763
764         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
765         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
766         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
767         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
768
769         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
770         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
771         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
772
773         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
774                          RTL818X_EEPROM_CMD_NORMAL);
775
776         res = rtl8187_cmd_reset(dev);
777         if (res)
778                 return res;
779
780         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
781         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
782         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
783         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
784         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
785         reg |= RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT |
786                RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
787         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
788
789         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
790
791         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
792         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
793         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
794
795         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
796                          RTL818X_EEPROM_CMD_CONFIG);
797         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
798         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
799         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
800                          RTL818X_EEPROM_CMD_NORMAL);
801
802         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
803         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
804                 rtl818x_iowrite8_idx(priv,
805                                      (u8 *)(uintptr_t)
806                                      (rtl8187b_reg_table[i][0] | 0xFF00),
807                                      rtl8187b_reg_table[i][1],
808                                      rtl8187b_reg_table[i][2]);
809         }
810
811         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
812         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
813
814         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
815         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
816         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
817
818         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
819
820         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
821
822         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
823                          RTL818X_EEPROM_CMD_CONFIG);
824         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
825         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
826         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
827         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
828                          RTL818X_EEPROM_CMD_NORMAL);
829
830         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
831         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
832         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
833         msleep(100);
834
835         priv->rf->init(dev);
836
837         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
838         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
839         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
840
841         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
842         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
843         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
844         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
845         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
846         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
847         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
848
849         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
850         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
851         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
852         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
853         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
854         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
855         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
856         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
857         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
858         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
859         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
860         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
861         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
862
863         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
864
865         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
866
867         priv->slot_time = 0x9;
868         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
869         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
870         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
871         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
872         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
873
874         return 0;
875 }
876
877 static void rtl8187_work(struct work_struct *work)
878 {
879         /* The RTL8187 returns the retry count through register 0xFFFA. In
880          * addition, it appears to be a cumulative retry count, not the
881          * value for the current TX packet. When multiple TX entries are
882          * queued, the retry count will be valid for the last one in the queue.
883          * The "error" should not matter for purposes of rate setting. */
884         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
885                                     work.work);
886         struct ieee80211_tx_info *info;
887         struct ieee80211_hw *dev = priv->dev;
888         static u16 retry;
889         u16 tmp;
890
891         mutex_lock(&priv->conf_mutex);
892         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
893         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
894                 struct sk_buff *old_skb;
895
896                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
897                 info = IEEE80211_SKB_CB(old_skb);
898                 info->status.rates[0].count = tmp - retry + 1;
899                 ieee80211_tx_status_irqsafe(dev, old_skb);
900         }
901         retry = tmp;
902         mutex_unlock(&priv->conf_mutex);
903 }
904
905 static int rtl8187_start(struct ieee80211_hw *dev)
906 {
907         struct rtl8187_priv *priv = dev->priv;
908         u32 reg;
909         int ret;
910
911         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
912                                      rtl8187b_init_hw(dev);
913         if (ret)
914                 return ret;
915
916         mutex_lock(&priv->conf_mutex);
917
918         init_usb_anchor(&priv->anchored);
919         priv->dev = dev;
920
921         if (priv->is_rtl8187b) {
922                 reg = RTL818X_RX_CONF_MGMT |
923                       RTL818X_RX_CONF_DATA |
924                       RTL818X_RX_CONF_BROADCAST |
925                       RTL818X_RX_CONF_NICMAC |
926                       RTL818X_RX_CONF_BSSID |
927                       (7 << 13 /* RX FIFO threshold NONE */) |
928                       (7 << 10 /* MAX RX DMA */) |
929                       RTL818X_RX_CONF_RX_AUTORESETPHY |
930                       RTL818X_RX_CONF_ONLYERLPKT |
931                       RTL818X_RX_CONF_MULTICAST;
932                 priv->rx_conf = reg;
933                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
934
935                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
936                                   RTL818X_TX_CONF_HW_SEQNUM |
937                                   RTL818X_TX_CONF_DISREQQSIZE |
938                                   (7 << 8  /* short retry limit */) |
939                                   (7 << 0  /* long retry limit */) |
940                                   (7 << 21 /* MAX TX DMA */));
941                 rtl8187_init_urbs(dev);
942                 rtl8187b_init_status_urb(dev);
943                 mutex_unlock(&priv->conf_mutex);
944                 return 0;
945         }
946
947         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
948
949         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
950         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
951
952         rtl8187_init_urbs(dev);
953
954         reg = RTL818X_RX_CONF_ONLYERLPKT |
955               RTL818X_RX_CONF_RX_AUTORESETPHY |
956               RTL818X_RX_CONF_BSSID |
957               RTL818X_RX_CONF_MGMT |
958               RTL818X_RX_CONF_DATA |
959               (7 << 13 /* RX FIFO threshold NONE */) |
960               (7 << 10 /* MAX RX DMA */) |
961               RTL818X_RX_CONF_BROADCAST |
962               RTL818X_RX_CONF_NICMAC;
963
964         priv->rx_conf = reg;
965         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
966
967         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
968         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
969         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
970         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
971
972         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
973         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
974         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
975         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
976         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
977
978         reg  = RTL818X_TX_CONF_CW_MIN |
979                (7 << 21 /* MAX TX DMA */) |
980                RTL818X_TX_CONF_NO_ICV;
981         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
982
983         reg = rtl818x_ioread8(priv, &priv->map->CMD);
984         reg |= RTL818X_CMD_TX_ENABLE;
985         reg |= RTL818X_CMD_RX_ENABLE;
986         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
987         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
988         mutex_unlock(&priv->conf_mutex);
989
990         return 0;
991 }
992
993 static void rtl8187_stop(struct ieee80211_hw *dev)
994 {
995         struct rtl8187_priv *priv = dev->priv;
996         struct sk_buff *skb;
997         u32 reg;
998
999         mutex_lock(&priv->conf_mutex);
1000         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
1001
1002         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1003         reg &= ~RTL818X_CMD_TX_ENABLE;
1004         reg &= ~RTL818X_CMD_RX_ENABLE;
1005         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1006
1007         priv->rf->stop(dev);
1008
1009         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1010         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1011         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1012         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1013
1014         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1015                 dev_kfree_skb_any(skb);
1016
1017         usb_kill_anchored_urbs(&priv->anchored);
1018         if (!priv->is_rtl8187b)
1019                 cancel_delayed_work_sync(&priv->work);
1020         mutex_unlock(&priv->conf_mutex);
1021 }
1022
1023 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1024                                  struct ieee80211_if_init_conf *conf)
1025 {
1026         struct rtl8187_priv *priv = dev->priv;
1027         int i;
1028         int ret = -EOPNOTSUPP;
1029
1030         mutex_lock(&priv->conf_mutex);
1031         if (priv->mode != NL80211_IFTYPE_MONITOR)
1032                 goto exit;
1033
1034         switch (conf->type) {
1035         case NL80211_IFTYPE_STATION:
1036                 priv->mode = conf->type;
1037                 break;
1038         default:
1039                 goto exit;
1040         }
1041
1042         ret = 0;
1043         priv->vif = conf->vif;
1044
1045         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1046         for (i = 0; i < ETH_ALEN; i++)
1047                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1048                                  ((u8 *)conf->mac_addr)[i]);
1049         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1050
1051 exit:
1052         mutex_unlock(&priv->conf_mutex);
1053         return ret;
1054 }
1055
1056 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1057                                      struct ieee80211_if_init_conf *conf)
1058 {
1059         struct rtl8187_priv *priv = dev->priv;
1060         mutex_lock(&priv->conf_mutex);
1061         priv->mode = NL80211_IFTYPE_MONITOR;
1062         priv->vif = NULL;
1063         mutex_unlock(&priv->conf_mutex);
1064 }
1065
1066 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1067 {
1068         struct rtl8187_priv *priv = dev->priv;
1069         struct ieee80211_conf *conf = &dev->conf;
1070         u32 reg;
1071
1072         mutex_lock(&priv->conf_mutex);
1073         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1074         /* Enable TX loopback on MAC level to avoid TX during channel
1075          * changes, as this has be seen to causes problems and the
1076          * card will stop work until next reset
1077          */
1078         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1079                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1080         priv->rf->set_chan(dev, conf);
1081         msleep(10);
1082         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1083
1084         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1085         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1086         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1087         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1088         mutex_unlock(&priv->conf_mutex);
1089         return 0;
1090 }
1091
1092 static int rtl8187_config_interface(struct ieee80211_hw *dev,
1093                                     struct ieee80211_vif *vif,
1094                                     struct ieee80211_if_conf *conf)
1095 {
1096         struct rtl8187_priv *priv = dev->priv;
1097         int i;
1098         u8 reg;
1099
1100         mutex_lock(&priv->conf_mutex);
1101         for (i = 0; i < ETH_ALEN; i++)
1102                 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
1103
1104         if (is_valid_ether_addr(conf->bssid)) {
1105                 reg = RTL818X_MSR_INFRA;
1106                 if (priv->is_rtl8187b)
1107                         reg |= RTL818X_MSR_ENEDCA;
1108                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1109         } else {
1110                 reg = RTL818X_MSR_NO_LINK;
1111                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1112         }
1113
1114         mutex_unlock(&priv->conf_mutex);
1115         return 0;
1116 }
1117
1118 /*
1119  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1120  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1121  */
1122 static __le32 *rtl8187b_ac_addr[4] = {
1123         (__le32 *) 0xFFF0, /* AC_VO */
1124         (__le32 *) 0xFFF4, /* AC_VI */
1125         (__le32 *) 0xFFFC, /* AC_BK */
1126         (__le32 *) 0xFFF8, /* AC_BE */
1127 };
1128
1129 #define SIFS_TIME 0xa
1130
1131 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1132                              bool use_short_preamble)
1133 {
1134         if (priv->is_rtl8187b) {
1135                 u8 difs, eifs;
1136                 u16 ack_timeout;
1137                 int queue;
1138
1139                 if (use_short_slot) {
1140                         priv->slot_time = 0x9;
1141                         difs = 0x1c;
1142                         eifs = 0x53;
1143                 } else {
1144                         priv->slot_time = 0x14;
1145                         difs = 0x32;
1146                         eifs = 0x5b;
1147                 }
1148                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1149                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1150                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1151
1152                 /*
1153                  * BRSR+1 on 8187B is in fact EIFS register
1154                  * Value in units of 4 us
1155                  */
1156                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1157
1158                 /*
1159                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1160                  * register. In units of 4 us like eifs register
1161                  * ack_timeout = ack duration + plcp + difs + preamble
1162                  */
1163                 ack_timeout = 112 + 48 + difs;
1164                 if (use_short_preamble)
1165                         ack_timeout += 72;
1166                 else
1167                         ack_timeout += 144;
1168                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1169                                  DIV_ROUND_UP(ack_timeout, 4));
1170
1171                 for (queue = 0; queue < 4; queue++)
1172                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1173                                          priv->aifsn[queue] * priv->slot_time +
1174                                          SIFS_TIME);
1175         } else {
1176                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1177                 if (use_short_slot) {
1178                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1179                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1180                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1181                 } else {
1182                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1183                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1184                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1185                 }
1186         }
1187 }
1188
1189 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1190                                      struct ieee80211_vif *vif,
1191                                      struct ieee80211_bss_conf *info,
1192                                      u32 changed)
1193 {
1194         struct rtl8187_priv *priv = dev->priv;
1195
1196         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1197                 rtl8187_conf_erp(priv, info->use_short_slot,
1198                                  info->use_short_preamble);
1199 }
1200
1201 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1202                                      unsigned int changed_flags,
1203                                      unsigned int *total_flags,
1204                                      int mc_count, struct dev_addr_list *mclist)
1205 {
1206         struct rtl8187_priv *priv = dev->priv;
1207
1208         if (changed_flags & FIF_FCSFAIL)
1209                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1210         if (changed_flags & FIF_CONTROL)
1211                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1212         if (changed_flags & FIF_OTHER_BSS)
1213                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1214         if (*total_flags & FIF_ALLMULTI || mc_count > 0)
1215                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1216         else
1217                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1218
1219         *total_flags = 0;
1220
1221         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1222                 *total_flags |= FIF_FCSFAIL;
1223         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1224                 *total_flags |= FIF_CONTROL;
1225         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1226                 *total_flags |= FIF_OTHER_BSS;
1227         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1228                 *total_flags |= FIF_ALLMULTI;
1229
1230         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1231 }
1232
1233 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1234                            const struct ieee80211_tx_queue_params *params)
1235 {
1236         struct rtl8187_priv *priv = dev->priv;
1237         u8 cw_min, cw_max;
1238
1239         if (queue > 3)
1240                 return -EINVAL;
1241
1242         cw_min = fls(params->cw_min);
1243         cw_max = fls(params->cw_max);
1244
1245         if (priv->is_rtl8187b) {
1246                 priv->aifsn[queue] = params->aifs;
1247
1248                 /*
1249                  * This is the structure of AC_*_PARAM registers in 8187B:
1250                  * - TXOP limit field, bit offset = 16
1251                  * - ECWmax, bit offset = 12
1252                  * - ECWmin, bit offset = 8
1253                  * - AIFS, bit offset = 0
1254                  */
1255                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1256                                   (params->txop << 16) | (cw_max << 12) |
1257                                   (cw_min << 8) | (params->aifs *
1258                                   priv->slot_time + SIFS_TIME));
1259         } else {
1260                 if (queue != 0)
1261                         return -EINVAL;
1262
1263                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1264                                  cw_min | (cw_max << 4));
1265         }
1266         return 0;
1267 }
1268
1269 static const struct ieee80211_ops rtl8187_ops = {
1270         .tx                     = rtl8187_tx,
1271         .start                  = rtl8187_start,
1272         .stop                   = rtl8187_stop,
1273         .add_interface          = rtl8187_add_interface,
1274         .remove_interface       = rtl8187_remove_interface,
1275         .config                 = rtl8187_config,
1276         .config_interface       = rtl8187_config_interface,
1277         .bss_info_changed       = rtl8187_bss_info_changed,
1278         .configure_filter       = rtl8187_configure_filter,
1279         .conf_tx                = rtl8187_conf_tx
1280 };
1281
1282 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1283 {
1284         struct ieee80211_hw *dev = eeprom->data;
1285         struct rtl8187_priv *priv = dev->priv;
1286         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1287
1288         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1289         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1290         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1291         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1292 }
1293
1294 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1295 {
1296         struct ieee80211_hw *dev = eeprom->data;
1297         struct rtl8187_priv *priv = dev->priv;
1298         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1299
1300         if (eeprom->reg_data_in)
1301                 reg |= RTL818X_EEPROM_CMD_WRITE;
1302         if (eeprom->reg_data_out)
1303                 reg |= RTL818X_EEPROM_CMD_READ;
1304         if (eeprom->reg_data_clock)
1305                 reg |= RTL818X_EEPROM_CMD_CK;
1306         if (eeprom->reg_chip_select)
1307                 reg |= RTL818X_EEPROM_CMD_CS;
1308
1309         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1310         udelay(10);
1311 }
1312
1313 static int __devinit rtl8187_probe(struct usb_interface *intf,
1314                                    const struct usb_device_id *id)
1315 {
1316         struct usb_device *udev = interface_to_usbdev(intf);
1317         struct ieee80211_hw *dev;
1318         struct rtl8187_priv *priv;
1319         struct eeprom_93cx6 eeprom;
1320         struct ieee80211_channel *channel;
1321         const char *chip_name;
1322         u16 txpwr, reg;
1323         int err, i;
1324
1325         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1326         if (!dev) {
1327                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1328                 return -ENOMEM;
1329         }
1330
1331         priv = dev->priv;
1332         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1333
1334         /* allocate "DMA aware" buffer for register accesses */
1335         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1336         if (!priv->io_dmabuf) {
1337                 err = -ENOMEM;
1338                 goto err_free_dev;
1339         }
1340         mutex_init(&priv->io_mutex);
1341
1342         SET_IEEE80211_DEV(dev, &intf->dev);
1343         usb_set_intfdata(intf, dev);
1344         priv->udev = udev;
1345
1346         usb_get_dev(udev);
1347
1348         skb_queue_head_init(&priv->rx_queue);
1349
1350         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1351         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1352
1353         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1354         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1355         priv->map = (struct rtl818x_csr *)0xFF00;
1356
1357         priv->band.band = IEEE80211_BAND_2GHZ;
1358         priv->band.channels = priv->channels;
1359         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1360         priv->band.bitrates = priv->rates;
1361         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1362         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1363
1364
1365         priv->mode = NL80211_IFTYPE_MONITOR;
1366         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1367                      IEEE80211_HW_SIGNAL_DBM |
1368                      IEEE80211_HW_RX_INCLUDES_FCS;
1369
1370         eeprom.data = dev;
1371         eeprom.register_read = rtl8187_eeprom_register_read;
1372         eeprom.register_write = rtl8187_eeprom_register_write;
1373         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1374                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1375         else
1376                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1377
1378         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1379         udelay(10);
1380
1381         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1382                                (__le16 __force *)dev->wiphy->perm_addr, 3);
1383         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
1384                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1385                        "generated MAC address\n");
1386                 random_ether_addr(dev->wiphy->perm_addr);
1387         }
1388
1389         channel = priv->channels;
1390         for (i = 0; i < 3; i++) {
1391                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1392                                   &txpwr);
1393                 (*channel++).hw_value = txpwr & 0xFF;
1394                 (*channel++).hw_value = txpwr >> 8;
1395         }
1396         for (i = 0; i < 2; i++) {
1397                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1398                                   &txpwr);
1399                 (*channel++).hw_value = txpwr & 0xFF;
1400                 (*channel++).hw_value = txpwr >> 8;
1401         }
1402
1403         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1404                           &priv->txpwr_base);
1405
1406         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1407         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1408         /* 0 means asic B-cut, we should use SW 3 wire
1409          * bit-by-bit banging for radio. 1 means we can use
1410          * USB specific request to write radio registers */
1411         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1412         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1413         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1414
1415         if (!priv->is_rtl8187b) {
1416                 u32 reg32;
1417                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1418                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1419                 switch (reg32) {
1420                 case RTL818X_TX_CONF_R8187vD_B:
1421                         /* Some RTL8187B devices have a USB ID of 0x8187
1422                          * detect them here */
1423                         chip_name = "RTL8187BvB(early)";
1424                         priv->is_rtl8187b = 1;
1425                         priv->hw_rev = RTL8187BvB;
1426                         break;
1427                 case RTL818X_TX_CONF_R8187vD:
1428                         chip_name = "RTL8187vD";
1429                         break;
1430                 default:
1431                         chip_name = "RTL8187vB (default)";
1432                 }
1433        } else {
1434                 /*
1435                  * Force USB request to write radio registers for 8187B, Realtek
1436                  * only uses it in their sources
1437                  */
1438                 /*if (priv->asic_rev == 0) {
1439                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1440                                "requests to write to radio registers\n");
1441                         priv->asic_rev = 1;
1442                 }*/
1443                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1444                 case RTL818X_R8187B_B:
1445                         chip_name = "RTL8187BvB";
1446                         priv->hw_rev = RTL8187BvB;
1447                         break;
1448                 case RTL818X_R8187B_D:
1449                         chip_name = "RTL8187BvD";
1450                         priv->hw_rev = RTL8187BvD;
1451                         break;
1452                 case RTL818X_R8187B_E:
1453                         chip_name = "RTL8187BvE";
1454                         priv->hw_rev = RTL8187BvE;
1455                         break;
1456                 default:
1457                         chip_name = "RTL8187BvB (default)";
1458                         priv->hw_rev = RTL8187BvB;
1459                 }
1460         }
1461
1462         if (!priv->is_rtl8187b) {
1463                 for (i = 0; i < 2; i++) {
1464                         eeprom_93cx6_read(&eeprom,
1465                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1466                                           &txpwr);
1467                         (*channel++).hw_value = txpwr & 0xFF;
1468                         (*channel++).hw_value = txpwr >> 8;
1469                 }
1470         } else {
1471                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1472                                   &txpwr);
1473                 (*channel++).hw_value = txpwr & 0xFF;
1474
1475                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1476                 (*channel++).hw_value = txpwr & 0xFF;
1477
1478                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1479                 (*channel++).hw_value = txpwr & 0xFF;
1480                 (*channel++).hw_value = txpwr >> 8;
1481         }
1482
1483         if (priv->is_rtl8187b)
1484                 printk(KERN_WARNING "rtl8187: 8187B chip detected.\n");
1485
1486         /*
1487          * XXX: Once this driver supports anything that requires
1488          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1489          */
1490         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1491
1492         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1493                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1494                        " info!\n");
1495
1496         priv->rf = rtl8187_detect_rf(dev);
1497         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1498                                   sizeof(struct rtl8187_tx_hdr) :
1499                                   sizeof(struct rtl8187b_tx_hdr);
1500         if (!priv->is_rtl8187b)
1501                 dev->queues = 1;
1502         else
1503                 dev->queues = 4;
1504
1505         err = ieee80211_register_hw(dev);
1506         if (err) {
1507                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1508                 goto err_free_dmabuf;
1509         }
1510         mutex_init(&priv->conf_mutex);
1511         skb_queue_head_init(&priv->b_tx_status.queue);
1512
1513         printk(KERN_INFO "%s: hwaddr %pM, %s V%d + %s\n",
1514                wiphy_name(dev->wiphy), dev->wiphy->perm_addr,
1515                chip_name, priv->asic_rev, priv->rf->name);
1516
1517         return 0;
1518
1519  err_free_dmabuf:
1520         kfree(priv->io_dmabuf);
1521  err_free_dev:
1522         ieee80211_free_hw(dev);
1523         usb_set_intfdata(intf, NULL);
1524         usb_put_dev(udev);
1525         return err;
1526 }
1527
1528 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1529 {
1530         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1531         struct rtl8187_priv *priv;
1532
1533         if (!dev)
1534                 return;
1535
1536         ieee80211_unregister_hw(dev);
1537
1538         priv = dev->priv;
1539         usb_reset_device(priv->udev);
1540         usb_put_dev(interface_to_usbdev(intf));
1541         kfree(priv->io_dmabuf);
1542         ieee80211_free_hw(dev);
1543 }
1544
1545 static struct usb_driver rtl8187_driver = {
1546         .name           = KBUILD_MODNAME,
1547         .id_table       = rtl8187_table,
1548         .probe          = rtl8187_probe,
1549         .disconnect     = __devexit_p(rtl8187_disconnect),
1550 };
1551
1552 static int __init rtl8187_init(void)
1553 {
1554         return usb_register(&rtl8187_driver);
1555 }
1556
1557 static void __exit rtl8187_exit(void)
1558 {
1559         usb_deregister(&rtl8187_driver);
1560 }
1561
1562 module_init(rtl8187_init);
1563 module_exit(rtl8187_exit);