rtl8187b: do not do per packet TX AGC
[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/slab.h>
26 #include <linux/delay.h>
27 #include <linux/etherdevice.h>
28 #include <linux/eeprom_93cx6.h>
29 #include <net/mac80211.h>
30
31 #include "rtl8187.h"
32 #include "rtl8187_rtl8225.h"
33 #ifdef CONFIG_RTL8187_LEDS
34 #include "rtl8187_leds.h"
35 #endif
36 #include "rtl8187_rfkill.h"
37
38 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
39 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
40 MODULE_AUTHOR("Herton Ronaldo Krzesinski <herton@mandriva.com.br>");
41 MODULE_AUTHOR("Hin-Tak Leung <htl10@users.sourceforge.net>");
42 MODULE_AUTHOR("Larry Finger <Larry.Finger@lwfinger.net>");
43 MODULE_DESCRIPTION("RTL8187/RTL8187B USB wireless driver");
44 MODULE_LICENSE("GPL");
45
46 static struct usb_device_id rtl8187_table[] __devinitdata = {
47         /* Asus */
48         {USB_DEVICE(0x0b05, 0x171d), .driver_info = DEVICE_RTL8187},
49         /* Belkin */
50         {USB_DEVICE(0x050d, 0x705e), .driver_info = DEVICE_RTL8187B},
51         /* Realtek */
52         {USB_DEVICE(0x0bda, 0x8187), .driver_info = DEVICE_RTL8187},
53         {USB_DEVICE(0x0bda, 0x8189), .driver_info = DEVICE_RTL8187B},
54         {USB_DEVICE(0x0bda, 0x8197), .driver_info = DEVICE_RTL8187B},
55         {USB_DEVICE(0x0bda, 0x8198), .driver_info = DEVICE_RTL8187B},
56         /* Surecom */
57         {USB_DEVICE(0x0769, 0x11F2), .driver_info = DEVICE_RTL8187},
58         /* Logitech */
59         {USB_DEVICE(0x0789, 0x010C), .driver_info = DEVICE_RTL8187},
60         /* Netgear */
61         {USB_DEVICE(0x0846, 0x6100), .driver_info = DEVICE_RTL8187},
62         {USB_DEVICE(0x0846, 0x6a00), .driver_info = DEVICE_RTL8187},
63         {USB_DEVICE(0x0846, 0x4260), .driver_info = DEVICE_RTL8187B},
64         /* HP */
65         {USB_DEVICE(0x03f0, 0xca02), .driver_info = DEVICE_RTL8187},
66         /* Sitecom */
67         {USB_DEVICE(0x0df6, 0x000d), .driver_info = DEVICE_RTL8187},
68         {USB_DEVICE(0x0df6, 0x0028), .driver_info = DEVICE_RTL8187B},
69         {USB_DEVICE(0x0df6, 0x0029), .driver_info = DEVICE_RTL8187B},
70         /* Sphairon Access Systems GmbH */
71         {USB_DEVICE(0x114B, 0x0150), .driver_info = DEVICE_RTL8187},
72         /* Dick Smith Electronics */
73         {USB_DEVICE(0x1371, 0x9401), .driver_info = DEVICE_RTL8187},
74         /* Abocom */
75         {USB_DEVICE(0x13d1, 0xabe6), .driver_info = DEVICE_RTL8187},
76         /* Qcom */
77         {USB_DEVICE(0x18E8, 0x6232), .driver_info = DEVICE_RTL8187},
78         /* AirLive */
79         {USB_DEVICE(0x1b75, 0x8187), .driver_info = DEVICE_RTL8187},
80         /* Linksys */
81         {USB_DEVICE(0x1737, 0x0073), .driver_info = DEVICE_RTL8187B},
82         {}
83 };
84
85 MODULE_DEVICE_TABLE(usb, rtl8187_table);
86
87 static const struct ieee80211_rate rtl818x_rates[] = {
88         { .bitrate = 10, .hw_value = 0, },
89         { .bitrate = 20, .hw_value = 1, },
90         { .bitrate = 55, .hw_value = 2, },
91         { .bitrate = 110, .hw_value = 3, },
92         { .bitrate = 60, .hw_value = 4, },
93         { .bitrate = 90, .hw_value = 5, },
94         { .bitrate = 120, .hw_value = 6, },
95         { .bitrate = 180, .hw_value = 7, },
96         { .bitrate = 240, .hw_value = 8, },
97         { .bitrate = 360, .hw_value = 9, },
98         { .bitrate = 480, .hw_value = 10, },
99         { .bitrate = 540, .hw_value = 11, },
100 };
101
102 static const struct ieee80211_channel rtl818x_channels[] = {
103         { .center_freq = 2412 },
104         { .center_freq = 2417 },
105         { .center_freq = 2422 },
106         { .center_freq = 2427 },
107         { .center_freq = 2432 },
108         { .center_freq = 2437 },
109         { .center_freq = 2442 },
110         { .center_freq = 2447 },
111         { .center_freq = 2452 },
112         { .center_freq = 2457 },
113         { .center_freq = 2462 },
114         { .center_freq = 2467 },
115         { .center_freq = 2472 },
116         { .center_freq = 2484 },
117 };
118
119 static void rtl8187_iowrite_async_cb(struct urb *urb)
120 {
121         kfree(urb->context);
122 }
123
124 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
125                                   void *data, u16 len)
126 {
127         struct usb_ctrlrequest *dr;
128         struct urb *urb;
129         struct rtl8187_async_write_data {
130                 u8 data[4];
131                 struct usb_ctrlrequest dr;
132         } *buf;
133         int rc;
134
135         buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
136         if (!buf)
137                 return;
138
139         urb = usb_alloc_urb(0, GFP_ATOMIC);
140         if (!urb) {
141                 kfree(buf);
142                 return;
143         }
144
145         dr = &buf->dr;
146
147         dr->bRequestType = RTL8187_REQT_WRITE;
148         dr->bRequest = RTL8187_REQ_SET_REG;
149         dr->wValue = addr;
150         dr->wIndex = 0;
151         dr->wLength = cpu_to_le16(len);
152
153         memcpy(buf, data, len);
154
155         usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
156                              (unsigned char *)dr, buf, len,
157                              rtl8187_iowrite_async_cb, buf);
158         usb_anchor_urb(urb, &priv->anchored);
159         rc = usb_submit_urb(urb, GFP_ATOMIC);
160         if (rc < 0) {
161                 kfree(buf);
162                 usb_unanchor_urb(urb);
163         }
164         usb_free_urb(urb);
165 }
166
167 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
168                                            __le32 *addr, u32 val)
169 {
170         __le32 buf = cpu_to_le32(val);
171
172         rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
173                               &buf, sizeof(buf));
174 }
175
176 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
177 {
178         struct rtl8187_priv *priv = dev->priv;
179
180         data <<= 8;
181         data |= addr | 0x80;
182
183         rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
184         rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
185         rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
186         rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
187 }
188
189 static void rtl8187_tx_cb(struct urb *urb)
190 {
191         struct sk_buff *skb = (struct sk_buff *)urb->context;
192         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
193         struct ieee80211_hw *hw = info->rate_driver_data[0];
194         struct rtl8187_priv *priv = hw->priv;
195
196         skb_pull(skb, priv->is_rtl8187b ? sizeof(struct rtl8187b_tx_hdr) :
197                                           sizeof(struct rtl8187_tx_hdr));
198         ieee80211_tx_info_clear_status(info);
199
200         if (!(urb->status) && !(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
201                 if (priv->is_rtl8187b) {
202                         skb_queue_tail(&priv->b_tx_status.queue, skb);
203
204                         /* queue is "full", discard last items */
205                         while (skb_queue_len(&priv->b_tx_status.queue) > 5) {
206                                 struct sk_buff *old_skb;
207
208                                 dev_dbg(&priv->udev->dev,
209                                         "transmit status queue full\n");
210
211                                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
212                                 ieee80211_tx_status_irqsafe(hw, old_skb);
213                         }
214                         return;
215                 } else {
216                         info->flags |= IEEE80211_TX_STAT_ACK;
217                 }
218         }
219         if (priv->is_rtl8187b)
220                 ieee80211_tx_status_irqsafe(hw, skb);
221         else {
222                 /* Retry information for the RTI8187 is only available by
223                  * reading a register in the device. We are in interrupt mode
224                  * here, thus queue the skb and finish on a work queue. */
225                 skb_queue_tail(&priv->b_tx_status.queue, skb);
226                 ieee80211_queue_delayed_work(hw, &priv->work, 0);
227         }
228 }
229
230 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
231 {
232         struct rtl8187_priv *priv = dev->priv;
233         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
234         unsigned int ep;
235         void *buf;
236         struct urb *urb;
237         __le16 rts_dur = 0;
238         u32 flags;
239         int rc;
240
241         urb = usb_alloc_urb(0, GFP_ATOMIC);
242         if (!urb) {
243                 kfree_skb(skb);
244                 return NETDEV_TX_OK;
245         }
246
247         flags = skb->len;
248         flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
249
250         flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
251         if (ieee80211_has_morefrags(((struct ieee80211_hdr *)skb->data)->frame_control))
252                 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
253         if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
254                 flags |= RTL818X_TX_DESC_FLAG_RTS;
255                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
256                 rts_dur = ieee80211_rts_duration(dev, priv->vif,
257                                                  skb->len, info);
258         } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
259                 flags |= RTL818X_TX_DESC_FLAG_CTS;
260                 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
261         }
262
263         if (!priv->is_rtl8187b) {
264                 struct rtl8187_tx_hdr *hdr =
265                         (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
266                 hdr->flags = cpu_to_le32(flags);
267                 hdr->len = 0;
268                 hdr->rts_duration = rts_dur;
269                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
270                 buf = hdr;
271
272                 ep = 2;
273         } else {
274                 /* fc needs to be calculated before skb_push() */
275                 unsigned int epmap[4] = { 6, 7, 5, 4 };
276                 struct ieee80211_hdr *tx_hdr =
277                         (struct ieee80211_hdr *)(skb->data);
278                 u16 fc = le16_to_cpu(tx_hdr->frame_control);
279
280                 struct rtl8187b_tx_hdr *hdr =
281                         (struct rtl8187b_tx_hdr *)skb_push(skb, sizeof(*hdr));
282                 struct ieee80211_rate *txrate =
283                         ieee80211_get_tx_rate(dev, info);
284                 memset(hdr, 0, sizeof(*hdr));
285                 hdr->flags = cpu_to_le32(flags);
286                 hdr->rts_duration = rts_dur;
287                 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
288                 hdr->tx_duration =
289                         ieee80211_generic_frame_duration(dev, priv->vif,
290                                                          skb->len, txrate);
291                 buf = hdr;
292
293                 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
294                         ep = 12;
295                 else
296                         ep = epmap[skb_get_queue_mapping(skb)];
297         }
298
299         info->rate_driver_data[0] = dev;
300         info->rate_driver_data[1] = urb;
301
302         usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
303                           buf, skb->len, rtl8187_tx_cb, skb);
304         urb->transfer_flags |= URB_ZERO_PACKET;
305         usb_anchor_urb(urb, &priv->anchored);
306         rc = usb_submit_urb(urb, GFP_ATOMIC);
307         if (rc < 0) {
308                 usb_unanchor_urb(urb);
309                 kfree_skb(skb);
310         }
311         usb_free_urb(urb);
312
313         return NETDEV_TX_OK;
314 }
315
316 static void rtl8187_rx_cb(struct urb *urb)
317 {
318         struct sk_buff *skb = (struct sk_buff *)urb->context;
319         struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
320         struct ieee80211_hw *dev = info->dev;
321         struct rtl8187_priv *priv = dev->priv;
322         struct ieee80211_rx_status rx_status = { 0 };
323         int rate, signal;
324         u32 flags;
325         unsigned long f;
326
327         spin_lock_irqsave(&priv->rx_queue.lock, f);
328         __skb_unlink(skb, &priv->rx_queue);
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. In this case, the scaling
343                  * constants are derived from the output of p54usb.
344                  */
345                 signal = -4 - ((27 * hdr->agc) >> 6);
346                 rx_status.antenna = (hdr->signal >> 7) & 1;
347                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
348         } else {
349                 struct rtl8187b_rx_hdr *hdr =
350                         (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
351                 /* The Realtek datasheet for the RTL8187B shows that the RX
352                  * header contains the following quantities: signal quality,
353                  * RSSI, AGC, the received power in dB, and the measured SNR.
354                  * In testing, none of these quantities show qualitative
355                  * agreement with AP signal strength, except for the AGC,
356                  * which is inversely proportional to the strength of the
357                  * signal. In the following, the signal strength
358                  * is derived from the AGC. The arbitrary scaling constants
359                  * are chosen to make the results close to the values obtained
360                  * for a BCM4312 using b43 as the driver. The noise is ignored
361                  * for now.
362                  */
363                 flags = le32_to_cpu(hdr->flags);
364                 signal = 14 - hdr->agc / 2;
365                 rx_status.antenna = (hdr->rssi >> 7) & 1;
366                 rx_status.mactime = le64_to_cpu(hdr->mac_time);
367         }
368
369         rx_status.signal = signal;
370         priv->signal = signal;
371         rate = (flags >> 20) & 0xF;
372         skb_trim(skb, flags & 0x0FFF);
373         rx_status.rate_idx = rate;
374         rx_status.freq = dev->conf.channel->center_freq;
375         rx_status.band = dev->conf.channel->band;
376         rx_status.flag |= RX_FLAG_TSFT;
377         if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
378                 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
379         memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
380         ieee80211_rx_irqsafe(dev, skb);
381
382         skb = dev_alloc_skb(RTL8187_MAX_RX);
383         if (unlikely(!skb)) {
384                 /* TODO check rx queue length and refill *somewhere* */
385                 return;
386         }
387
388         info = (struct rtl8187_rx_info *)skb->cb;
389         info->urb = urb;
390         info->dev = dev;
391         urb->transfer_buffer = skb_tail_pointer(skb);
392         urb->context = skb;
393         skb_queue_tail(&priv->rx_queue, skb);
394
395         usb_anchor_urb(urb, &priv->anchored);
396         if (usb_submit_urb(urb, GFP_ATOMIC)) {
397                 usb_unanchor_urb(urb);
398                 skb_unlink(skb, &priv->rx_queue);
399                 dev_kfree_skb_irq(skb);
400         }
401 }
402
403 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
404 {
405         struct rtl8187_priv *priv = dev->priv;
406         struct urb *entry = NULL;
407         struct sk_buff *skb;
408         struct rtl8187_rx_info *info;
409         int ret = 0;
410
411         while (skb_queue_len(&priv->rx_queue) < 16) {
412                 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
413                 if (!skb) {
414                         ret = -ENOMEM;
415                         goto err;
416                 }
417                 entry = usb_alloc_urb(0, GFP_KERNEL);
418                 if (!entry) {
419                         ret = -ENOMEM;
420                         goto err;
421                 }
422                 usb_fill_bulk_urb(entry, priv->udev,
423                                   usb_rcvbulkpipe(priv->udev,
424                                   priv->is_rtl8187b ? 3 : 1),
425                                   skb_tail_pointer(skb),
426                                   RTL8187_MAX_RX, rtl8187_rx_cb, skb);
427                 info = (struct rtl8187_rx_info *)skb->cb;
428                 info->urb = entry;
429                 info->dev = dev;
430                 skb_queue_tail(&priv->rx_queue, skb);
431                 usb_anchor_urb(entry, &priv->anchored);
432                 ret = usb_submit_urb(entry, GFP_KERNEL);
433                 if (ret) {
434                         skb_unlink(skb, &priv->rx_queue);
435                         usb_unanchor_urb(entry);
436                         goto err;
437                 }
438                 usb_free_urb(entry);
439         }
440         return ret;
441
442 err:
443         usb_free_urb(entry);
444         kfree_skb(skb);
445         usb_kill_anchored_urbs(&priv->anchored);
446         return ret;
447 }
448
449 static void rtl8187b_status_cb(struct urb *urb)
450 {
451         struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
452         struct rtl8187_priv *priv = hw->priv;
453         u64 val;
454         unsigned int cmd_type;
455
456         if (unlikely(urb->status))
457                 return;
458
459         /*
460          * Read from status buffer:
461          *
462          * bits [30:31] = cmd type:
463          * - 0 indicates tx beacon interrupt
464          * - 1 indicates tx close descriptor
465          *
466          * In the case of tx beacon interrupt:
467          * [0:9] = Last Beacon CW
468          * [10:29] = reserved
469          * [30:31] = 00b
470          * [32:63] = Last Beacon TSF
471          *
472          * If it's tx close descriptor:
473          * [0:7] = Packet Retry Count
474          * [8:14] = RTS Retry Count
475          * [15] = TOK
476          * [16:27] = Sequence No
477          * [28] = LS
478          * [29] = FS
479          * [30:31] = 01b
480          * [32:47] = unused (reserved?)
481          * [48:63] = MAC Used Time
482          */
483         val = le64_to_cpu(priv->b_tx_status.buf);
484
485         cmd_type = (val >> 30) & 0x3;
486         if (cmd_type == 1) {
487                 unsigned int pkt_rc, seq_no;
488                 bool tok;
489                 struct sk_buff *skb;
490                 struct ieee80211_hdr *ieee80211hdr;
491                 unsigned long flags;
492
493                 pkt_rc = val & 0xFF;
494                 tok = val & (1 << 15);
495                 seq_no = (val >> 16) & 0xFFF;
496
497                 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
498                 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
499                         ieee80211hdr = (struct ieee80211_hdr *)skb->data;
500
501                         /*
502                          * While testing, it was discovered that the seq_no
503                          * doesn't actually contains the sequence number.
504                          * Instead of returning just the 12 bits of sequence
505                          * number, hardware is returning entire sequence control
506                          * (fragment number plus sequence number) in a 12 bit
507                          * only field overflowing after some time. As a
508                          * workaround, just consider the lower bits, and expect
509                          * it's unlikely we wrongly ack some sent data
510                          */
511                         if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
512                             & 0xFFF) == seq_no)
513                                 break;
514                 }
515                 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
516                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
517
518                         __skb_unlink(skb, &priv->b_tx_status.queue);
519                         if (tok)
520                                 info->flags |= IEEE80211_TX_STAT_ACK;
521                         info->status.rates[0].count = pkt_rc + 1;
522
523                         ieee80211_tx_status_irqsafe(hw, skb);
524                 }
525                 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
526         }
527
528         usb_anchor_urb(urb, &priv->anchored);
529         if (usb_submit_urb(urb, GFP_ATOMIC))
530                 usb_unanchor_urb(urb);
531 }
532
533 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
534 {
535         struct rtl8187_priv *priv = dev->priv;
536         struct urb *entry;
537         int ret = 0;
538
539         entry = usb_alloc_urb(0, GFP_KERNEL);
540         if (!entry)
541                 return -ENOMEM;
542
543         usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
544                           &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
545                           rtl8187b_status_cb, dev);
546
547         usb_anchor_urb(entry, &priv->anchored);
548         ret = usb_submit_urb(entry, GFP_KERNEL);
549         if (ret)
550                 usb_unanchor_urb(entry);
551         usb_free_urb(entry);
552
553         return ret;
554 }
555
556 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
557 {
558         struct rtl8187_priv *priv = dev->priv;
559         u8 reg;
560         int i;
561
562         reg = rtl818x_ioread8(priv, &priv->map->CMD);
563         reg &= (1 << 1);
564         reg |= RTL818X_CMD_RESET;
565         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
566
567         i = 10;
568         do {
569                 msleep(2);
570                 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
571                       RTL818X_CMD_RESET))
572                         break;
573         } while (--i);
574
575         if (!i) {
576                 wiphy_err(dev->wiphy, "Reset timeout!\n");
577                 return -ETIMEDOUT;
578         }
579
580         /* reload registers from eeprom */
581         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
582
583         i = 10;
584         do {
585                 msleep(4);
586                 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
587                       RTL818X_EEPROM_CMD_CONFIG))
588                         break;
589         } while (--i);
590
591         if (!i) {
592                 wiphy_err(dev->wiphy, "eeprom reset timeout!\n");
593                 return -ETIMEDOUT;
594         }
595
596         return 0;
597 }
598
599 static int rtl8187_init_hw(struct ieee80211_hw *dev)
600 {
601         struct rtl8187_priv *priv = dev->priv;
602         u8 reg;
603         int res;
604
605         /* reset */
606         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
607                          RTL818X_EEPROM_CMD_CONFIG);
608         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
609         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg |
610                          RTL818X_CONFIG3_ANAPARAM_WRITE);
611         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
612                           RTL8187_RTL8225_ANAPARAM_ON);
613         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
614                           RTL8187_RTL8225_ANAPARAM2_ON);
615         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg &
616                          ~RTL818X_CONFIG3_ANAPARAM_WRITE);
617         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
618                          RTL818X_EEPROM_CMD_NORMAL);
619
620         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
621
622         msleep(200);
623         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
624         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
625         rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
626         msleep(200);
627
628         res = rtl8187_cmd_reset(dev);
629         if (res)
630                 return res;
631
632         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
633         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
634         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
635                         reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
636         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
637                           RTL8187_RTL8225_ANAPARAM_ON);
638         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
639                           RTL8187_RTL8225_ANAPARAM2_ON);
640         rtl818x_iowrite8(priv, &priv->map->CONFIG3,
641                         reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
642         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
643
644         /* setup card */
645         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
646         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
647
648         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
649         rtl818x_iowrite8(priv, &priv->map->GPIO0, 1);
650         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
651
652         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
653
654         rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
655         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
656         reg &= 0x3F;
657         reg |= 0x80;
658         rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
659
660         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
661
662         rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
663         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
664         rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
665
666         // TODO: set RESP_RATE and BRSR properly
667         rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
668         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
669
670         /* host_usb_init */
671         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
672         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
673         reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
674         rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
675         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
676         rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x20);
677         rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
678         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
679         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
680         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
681         msleep(100);
682
683         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
684         rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
685         rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
686         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
687                          RTL818X_EEPROM_CMD_CONFIG);
688         rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
689         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
690                          RTL818X_EEPROM_CMD_NORMAL);
691         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
692         msleep(100);
693
694         priv->rf->init(dev);
695
696         rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
697         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
698         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
699         rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
700         rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
701         rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
702         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
703
704         return 0;
705 }
706
707 static const u8 rtl8187b_reg_table[][3] = {
708         {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
709         {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
710         {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
711         {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
712
713         {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
714         {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
715         {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xE0, 0xFF, 1}, {0xE1, 0x0F, 1},
716         {0xE2, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1}, {0xF2, 0x02, 1},
717         {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1}, {0xF6, 0x06, 1},
718         {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
719
720         {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
721         {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
722         {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
723         {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
724         {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
725         {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
726         {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2}, {0x72, 0x56, 2},
727         {0x73, 0x9A, 2},
728
729         {0x34, 0xF0, 0}, {0x35, 0x0F, 0}, {0x5B, 0x40, 0}, {0x84, 0x88, 0},
730         {0x85, 0x24, 0}, {0x88, 0x54, 0}, {0x8B, 0xB8, 0}, {0x8C, 0x07, 0},
731         {0x8D, 0x00, 0}, {0x94, 0x1B, 0}, {0x95, 0x12, 0}, {0x96, 0x00, 0},
732         {0x97, 0x06, 0}, {0x9D, 0x1A, 0}, {0x9F, 0x10, 0}, {0xB4, 0x22, 0},
733         {0xBE, 0x80, 0}, {0xDB, 0x00, 0}, {0xEE, 0x00, 0}, {0x4C, 0x00, 2},
734
735         {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
736         {0x8F, 0x00, 0}
737 };
738
739 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
740 {
741         struct rtl8187_priv *priv = dev->priv;
742         int res, i;
743         u8 reg;
744
745         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
746                          RTL818X_EEPROM_CMD_CONFIG);
747
748         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
749         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE | RTL818X_CONFIG3_GNT_SELECT;
750         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
751         rtl818x_iowrite32(priv, &priv->map->ANAPARAM2,
752                           RTL8187B_RTL8225_ANAPARAM2_ON);
753         rtl818x_iowrite32(priv, &priv->map->ANAPARAM,
754                           RTL8187B_RTL8225_ANAPARAM_ON);
755         rtl818x_iowrite8(priv, &priv->map->ANAPARAM3,
756                          RTL8187B_RTL8225_ANAPARAM3_ON);
757
758         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
759         reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
760         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
761         rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
762
763         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
764         reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
765         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
766
767         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
768                          RTL818X_EEPROM_CMD_NORMAL);
769
770         res = rtl8187_cmd_reset(dev);
771         if (res)
772                 return res;
773
774         rtl818x_iowrite16(priv, (__le16 *)0xFF2D, 0x0FFF);
775         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
776         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
777         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
778
779         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
780
781         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
782         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
783         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
784
785         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
786                          RTL818X_EEPROM_CMD_CONFIG);
787         reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
788         rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
789         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
790                          RTL818X_EEPROM_CMD_NORMAL);
791
792         rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
793         for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
794                 rtl818x_iowrite8_idx(priv,
795                                      (u8 *)(uintptr_t)
796                                      (rtl8187b_reg_table[i][0] | 0xFF00),
797                                      rtl8187b_reg_table[i][1],
798                                      rtl8187b_reg_table[i][2]);
799         }
800
801         rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
802         rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
803
804         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
805         rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
806         rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
807
808         rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
809
810         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
811
812         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
813                          RTL818X_EEPROM_CMD_CONFIG);
814         reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
815         reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
816         rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
817         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
818                          RTL818X_EEPROM_CMD_NORMAL);
819
820         rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
821         rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
822         rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
823         msleep(100);
824
825         priv->rf->init(dev);
826
827         reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
828         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
829         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
830
831         rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
832         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
833         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
834         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
835         rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
836         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
837         rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
838
839         reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
840         rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
841         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
842         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
843         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
844         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
845         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
846         rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
847         rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
848         rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
849         rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
850         rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
851         rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
852
853         rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
854
855         rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
856
857         priv->slot_time = 0x9;
858         priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
859         priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
860         priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
861         priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
862         rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
863
864         /* ENEDCA flag must always be set, transmit issues? */
865         rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
866
867         return 0;
868 }
869
870 static void rtl8187_work(struct work_struct *work)
871 {
872         /* The RTL8187 returns the retry count through register 0xFFFA. In
873          * addition, it appears to be a cumulative retry count, not the
874          * value for the current TX packet. When multiple TX entries are
875          * queued, the retry count will be valid for the last one in the queue.
876          * The "error" should not matter for purposes of rate setting. */
877         struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
878                                     work.work);
879         struct ieee80211_tx_info *info;
880         struct ieee80211_hw *dev = priv->dev;
881         static u16 retry;
882         u16 tmp;
883
884         mutex_lock(&priv->conf_mutex);
885         tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
886         while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
887                 struct sk_buff *old_skb;
888
889                 old_skb = skb_dequeue(&priv->b_tx_status.queue);
890                 info = IEEE80211_SKB_CB(old_skb);
891                 info->status.rates[0].count = tmp - retry + 1;
892                 ieee80211_tx_status_irqsafe(dev, old_skb);
893         }
894         retry = tmp;
895         mutex_unlock(&priv->conf_mutex);
896 }
897
898 static int rtl8187_start(struct ieee80211_hw *dev)
899 {
900         struct rtl8187_priv *priv = dev->priv;
901         u32 reg;
902         int ret;
903
904         mutex_lock(&priv->conf_mutex);
905
906         ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
907                                      rtl8187b_init_hw(dev);
908         if (ret)
909                 goto rtl8187_start_exit;
910
911         init_usb_anchor(&priv->anchored);
912         priv->dev = dev;
913
914         if (priv->is_rtl8187b) {
915                 reg = RTL818X_RX_CONF_MGMT |
916                       RTL818X_RX_CONF_DATA |
917                       RTL818X_RX_CONF_BROADCAST |
918                       RTL818X_RX_CONF_NICMAC |
919                       RTL818X_RX_CONF_BSSID |
920                       (7 << 13 /* RX FIFO threshold NONE */) |
921                       (7 << 10 /* MAX RX DMA */) |
922                       RTL818X_RX_CONF_RX_AUTORESETPHY |
923                       RTL818X_RX_CONF_ONLYERLPKT |
924                       RTL818X_RX_CONF_MULTICAST;
925                 priv->rx_conf = reg;
926                 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
927
928                 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
929                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
930                 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
931                 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
932                 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
933
934                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
935                                   RTL818X_TX_CONF_HW_SEQNUM |
936                                   RTL818X_TX_CONF_DISREQQSIZE |
937                                   (7 << 8  /* short retry limit */) |
938                                   (7 << 0  /* long retry limit */) |
939                                   (7 << 21 /* MAX TX DMA */));
940                 rtl8187_init_urbs(dev);
941                 rtl8187b_init_status_urb(dev);
942                 goto rtl8187_start_exit;
943         }
944
945         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
946
947         rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
948         rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
949
950         rtl8187_init_urbs(dev);
951
952         reg = RTL818X_RX_CONF_ONLYERLPKT |
953               RTL818X_RX_CONF_RX_AUTORESETPHY |
954               RTL818X_RX_CONF_BSSID |
955               RTL818X_RX_CONF_MGMT |
956               RTL818X_RX_CONF_DATA |
957               (7 << 13 /* RX FIFO threshold NONE */) |
958               (7 << 10 /* MAX RX DMA */) |
959               RTL818X_RX_CONF_BROADCAST |
960               RTL818X_RX_CONF_NICMAC;
961
962         priv->rx_conf = reg;
963         rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
964
965         reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
966         reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
967         reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
968         rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
969
970         reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
971         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
972         reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
973         reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
974         rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
975
976         reg  = RTL818X_TX_CONF_CW_MIN |
977                (7 << 21 /* MAX TX DMA */) |
978                RTL818X_TX_CONF_NO_ICV;
979         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
980
981         reg = rtl818x_ioread8(priv, &priv->map->CMD);
982         reg |= RTL818X_CMD_TX_ENABLE;
983         reg |= RTL818X_CMD_RX_ENABLE;
984         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
985         INIT_DELAYED_WORK(&priv->work, rtl8187_work);
986
987 rtl8187_start_exit:
988         mutex_unlock(&priv->conf_mutex);
989         return ret;
990 }
991
992 static void rtl8187_stop(struct ieee80211_hw *dev)
993 {
994         struct rtl8187_priv *priv = dev->priv;
995         struct sk_buff *skb;
996         u32 reg;
997
998         mutex_lock(&priv->conf_mutex);
999         rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
1000
1001         reg = rtl818x_ioread8(priv, &priv->map->CMD);
1002         reg &= ~RTL818X_CMD_TX_ENABLE;
1003         reg &= ~RTL818X_CMD_RX_ENABLE;
1004         rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1005
1006         priv->rf->stop(dev);
1007
1008         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1009         reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1010         rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1011         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1012
1013         while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1014                 dev_kfree_skb_any(skb);
1015
1016         usb_kill_anchored_urbs(&priv->anchored);
1017         mutex_unlock(&priv->conf_mutex);
1018
1019         if (!priv->is_rtl8187b)
1020                 cancel_delayed_work_sync(&priv->work);
1021 }
1022
1023 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1024                                  struct ieee80211_vif *vif)
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->vif)
1032                 goto exit;
1033
1034         switch (vif->type) {
1035         case NL80211_IFTYPE_STATION:
1036                 break;
1037         default:
1038                 goto exit;
1039         }
1040
1041         ret = 0;
1042         priv->vif = vif;
1043
1044         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1045         for (i = 0; i < ETH_ALEN; i++)
1046                 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1047                                  ((u8 *)vif->addr)[i]);
1048         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1049
1050 exit:
1051         mutex_unlock(&priv->conf_mutex);
1052         return ret;
1053 }
1054
1055 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1056                                      struct ieee80211_vif *vif)
1057 {
1058         struct rtl8187_priv *priv = dev->priv;
1059         mutex_lock(&priv->conf_mutex);
1060         priv->vif = NULL;
1061         mutex_unlock(&priv->conf_mutex);
1062 }
1063
1064 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1065 {
1066         struct rtl8187_priv *priv = dev->priv;
1067         struct ieee80211_conf *conf = &dev->conf;
1068         u32 reg;
1069
1070         mutex_lock(&priv->conf_mutex);
1071         reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1072         /* Enable TX loopback on MAC level to avoid TX during channel
1073          * changes, as this has be seen to causes problems and the
1074          * card will stop work until next reset
1075          */
1076         rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1077                           reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1078         priv->rf->set_chan(dev, conf);
1079         msleep(10);
1080         rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1081
1082         rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1083         rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1084         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1085         rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1086         mutex_unlock(&priv->conf_mutex);
1087         return 0;
1088 }
1089
1090 /*
1091  * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1092  * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1093  */
1094 static __le32 *rtl8187b_ac_addr[4] = {
1095         (__le32 *) 0xFFF0, /* AC_VO */
1096         (__le32 *) 0xFFF4, /* AC_VI */
1097         (__le32 *) 0xFFFC, /* AC_BK */
1098         (__le32 *) 0xFFF8, /* AC_BE */
1099 };
1100
1101 #define SIFS_TIME 0xa
1102
1103 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1104                              bool use_short_preamble)
1105 {
1106         if (priv->is_rtl8187b) {
1107                 u8 difs, eifs;
1108                 u16 ack_timeout;
1109                 int queue;
1110
1111                 if (use_short_slot) {
1112                         priv->slot_time = 0x9;
1113                         difs = 0x1c;
1114                         eifs = 0x53;
1115                 } else {
1116                         priv->slot_time = 0x14;
1117                         difs = 0x32;
1118                         eifs = 0x5b;
1119                 }
1120                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1121                 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1122                 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1123
1124                 /*
1125                  * BRSR+1 on 8187B is in fact EIFS register
1126                  * Value in units of 4 us
1127                  */
1128                 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1129
1130                 /*
1131                  * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1132                  * register. In units of 4 us like eifs register
1133                  * ack_timeout = ack duration + plcp + difs + preamble
1134                  */
1135                 ack_timeout = 112 + 48 + difs;
1136                 if (use_short_preamble)
1137                         ack_timeout += 72;
1138                 else
1139                         ack_timeout += 144;
1140                 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1141                                  DIV_ROUND_UP(ack_timeout, 4));
1142
1143                 for (queue = 0; queue < 4; queue++)
1144                         rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1145                                          priv->aifsn[queue] * priv->slot_time +
1146                                          SIFS_TIME);
1147         } else {
1148                 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1149                 if (use_short_slot) {
1150                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1151                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1152                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1153                 } else {
1154                         rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1155                         rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1156                         rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1157                 }
1158         }
1159 }
1160
1161 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1162                                      struct ieee80211_vif *vif,
1163                                      struct ieee80211_bss_conf *info,
1164                                      u32 changed)
1165 {
1166         struct rtl8187_priv *priv = dev->priv;
1167         int i;
1168         u8 reg;
1169
1170         if (changed & BSS_CHANGED_BSSID) {
1171                 mutex_lock(&priv->conf_mutex);
1172                 for (i = 0; i < ETH_ALEN; i++)
1173                         rtl818x_iowrite8(priv, &priv->map->BSSID[i],
1174                                          info->bssid[i]);
1175
1176                 if (priv->is_rtl8187b)
1177                         reg = RTL818X_MSR_ENEDCA;
1178                 else
1179                         reg = 0;
1180
1181                 if (is_valid_ether_addr(info->bssid))
1182                         reg |= RTL818X_MSR_INFRA;
1183                 else
1184                         reg |= RTL818X_MSR_NO_LINK;
1185
1186                 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1187
1188                 mutex_unlock(&priv->conf_mutex);
1189         }
1190
1191         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1192                 rtl8187_conf_erp(priv, info->use_short_slot,
1193                                  info->use_short_preamble);
1194 }
1195
1196 static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
1197                                      struct netdev_hw_addr_list *mc_list)
1198 {
1199         return netdev_hw_addr_list_count(mc_list);
1200 }
1201
1202 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1203                                      unsigned int changed_flags,
1204                                      unsigned int *total_flags,
1205                                      u64 multicast)
1206 {
1207         struct rtl8187_priv *priv = dev->priv;
1208
1209         if (changed_flags & FIF_FCSFAIL)
1210                 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1211         if (changed_flags & FIF_CONTROL)
1212                 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1213         if (changed_flags & FIF_OTHER_BSS)
1214                 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
1215         if (*total_flags & FIF_ALLMULTI || multicast > 0)
1216                 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
1217         else
1218                 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
1219
1220         *total_flags = 0;
1221
1222         if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1223                 *total_flags |= FIF_FCSFAIL;
1224         if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1225                 *total_flags |= FIF_CONTROL;
1226         if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
1227                 *total_flags |= FIF_OTHER_BSS;
1228         if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
1229                 *total_flags |= FIF_ALLMULTI;
1230
1231         rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1232 }
1233
1234 static int rtl8187_conf_tx(struct ieee80211_hw *dev, u16 queue,
1235                            const struct ieee80211_tx_queue_params *params)
1236 {
1237         struct rtl8187_priv *priv = dev->priv;
1238         u8 cw_min, cw_max;
1239
1240         if (queue > 3)
1241                 return -EINVAL;
1242
1243         cw_min = fls(params->cw_min);
1244         cw_max = fls(params->cw_max);
1245
1246         if (priv->is_rtl8187b) {
1247                 priv->aifsn[queue] = params->aifs;
1248
1249                 /*
1250                  * This is the structure of AC_*_PARAM registers in 8187B:
1251                  * - TXOP limit field, bit offset = 16
1252                  * - ECWmax, bit offset = 12
1253                  * - ECWmin, bit offset = 8
1254                  * - AIFS, bit offset = 0
1255                  */
1256                 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1257                                   (params->txop << 16) | (cw_max << 12) |
1258                                   (cw_min << 8) | (params->aifs *
1259                                   priv->slot_time + SIFS_TIME));
1260         } else {
1261                 if (queue != 0)
1262                         return -EINVAL;
1263
1264                 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1265                                  cw_min | (cw_max << 4));
1266         }
1267         return 0;
1268 }
1269
1270 static u64 rtl8187_get_tsf(struct ieee80211_hw *dev)
1271 {
1272         struct rtl8187_priv *priv = dev->priv;
1273
1274         return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1275                (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1276 }
1277
1278 static const struct ieee80211_ops rtl8187_ops = {
1279         .tx                     = rtl8187_tx,
1280         .start                  = rtl8187_start,
1281         .stop                   = rtl8187_stop,
1282         .add_interface          = rtl8187_add_interface,
1283         .remove_interface       = rtl8187_remove_interface,
1284         .config                 = rtl8187_config,
1285         .bss_info_changed       = rtl8187_bss_info_changed,
1286         .prepare_multicast      = rtl8187_prepare_multicast,
1287         .configure_filter       = rtl8187_configure_filter,
1288         .conf_tx                = rtl8187_conf_tx,
1289         .rfkill_poll            = rtl8187_rfkill_poll,
1290         .get_tsf                = rtl8187_get_tsf,
1291 };
1292
1293 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1294 {
1295         struct ieee80211_hw *dev = eeprom->data;
1296         struct rtl8187_priv *priv = dev->priv;
1297         u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1298
1299         eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1300         eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1301         eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1302         eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1303 }
1304
1305 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1306 {
1307         struct ieee80211_hw *dev = eeprom->data;
1308         struct rtl8187_priv *priv = dev->priv;
1309         u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1310
1311         if (eeprom->reg_data_in)
1312                 reg |= RTL818X_EEPROM_CMD_WRITE;
1313         if (eeprom->reg_data_out)
1314                 reg |= RTL818X_EEPROM_CMD_READ;
1315         if (eeprom->reg_data_clock)
1316                 reg |= RTL818X_EEPROM_CMD_CK;
1317         if (eeprom->reg_chip_select)
1318                 reg |= RTL818X_EEPROM_CMD_CS;
1319
1320         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1321         udelay(10);
1322 }
1323
1324 static int __devinit rtl8187_probe(struct usb_interface *intf,
1325                                    const struct usb_device_id *id)
1326 {
1327         struct usb_device *udev = interface_to_usbdev(intf);
1328         struct ieee80211_hw *dev;
1329         struct rtl8187_priv *priv;
1330         struct eeprom_93cx6 eeprom;
1331         struct ieee80211_channel *channel;
1332         const char *chip_name;
1333         u16 txpwr, reg;
1334         u16 product_id = le16_to_cpu(udev->descriptor.idProduct);
1335         int err, i;
1336         u8 mac_addr[ETH_ALEN];
1337
1338         dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1339         if (!dev) {
1340                 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1341                 return -ENOMEM;
1342         }
1343
1344         priv = dev->priv;
1345         priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1346
1347         /* allocate "DMA aware" buffer for register accesses */
1348         priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1349         if (!priv->io_dmabuf) {
1350                 err = -ENOMEM;
1351                 goto err_free_dev;
1352         }
1353         mutex_init(&priv->io_mutex);
1354
1355         SET_IEEE80211_DEV(dev, &intf->dev);
1356         usb_set_intfdata(intf, dev);
1357         priv->udev = udev;
1358
1359         usb_get_dev(udev);
1360
1361         skb_queue_head_init(&priv->rx_queue);
1362
1363         BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1364         BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1365
1366         memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1367         memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1368         priv->map = (struct rtl818x_csr *)0xFF00;
1369
1370         priv->band.band = IEEE80211_BAND_2GHZ;
1371         priv->band.channels = priv->channels;
1372         priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1373         priv->band.bitrates = priv->rates;
1374         priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1375         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
1376
1377
1378         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
1379                      IEEE80211_HW_SIGNAL_DBM |
1380                      IEEE80211_HW_RX_INCLUDES_FCS;
1381
1382         eeprom.data = dev;
1383         eeprom.register_read = rtl8187_eeprom_register_read;
1384         eeprom.register_write = rtl8187_eeprom_register_write;
1385         if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1386                 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1387         else
1388                 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1389
1390         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1391         udelay(10);
1392
1393         eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1394                                (__le16 __force *)mac_addr, 3);
1395         if (!is_valid_ether_addr(mac_addr)) {
1396                 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1397                        "generated MAC address\n");
1398                 random_ether_addr(mac_addr);
1399         }
1400         SET_IEEE80211_PERM_ADDR(dev, mac_addr);
1401
1402         channel = priv->channels;
1403         for (i = 0; i < 3; i++) {
1404                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1405                                   &txpwr);
1406                 (*channel++).hw_value = txpwr & 0xFF;
1407                 (*channel++).hw_value = txpwr >> 8;
1408         }
1409         for (i = 0; i < 2; i++) {
1410                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1411                                   &txpwr);
1412                 (*channel++).hw_value = txpwr & 0xFF;
1413                 (*channel++).hw_value = txpwr >> 8;
1414         }
1415
1416         eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1417                           &priv->txpwr_base);
1418
1419         reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1420         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1421         /* 0 means asic B-cut, we should use SW 3 wire
1422          * bit-by-bit banging for radio. 1 means we can use
1423          * USB specific request to write radio registers */
1424         priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1425         rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1426         rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1427
1428         if (!priv->is_rtl8187b) {
1429                 u32 reg32;
1430                 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1431                 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1432                 switch (reg32) {
1433                 case RTL818X_TX_CONF_R8187vD_B:
1434                         /* Some RTL8187B devices have a USB ID of 0x8187
1435                          * detect them here */
1436                         chip_name = "RTL8187BvB(early)";
1437                         priv->is_rtl8187b = 1;
1438                         priv->hw_rev = RTL8187BvB;
1439                         break;
1440                 case RTL818X_TX_CONF_R8187vD:
1441                         chip_name = "RTL8187vD";
1442                         break;
1443                 default:
1444                         chip_name = "RTL8187vB (default)";
1445                 }
1446        } else {
1447                 /*
1448                  * Force USB request to write radio registers for 8187B, Realtek
1449                  * only uses it in their sources
1450                  */
1451                 /*if (priv->asic_rev == 0) {
1452                         printk(KERN_WARNING "rtl8187: Forcing use of USB "
1453                                "requests to write to radio registers\n");
1454                         priv->asic_rev = 1;
1455                 }*/
1456                 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1457                 case RTL818X_R8187B_B:
1458                         chip_name = "RTL8187BvB";
1459                         priv->hw_rev = RTL8187BvB;
1460                         break;
1461                 case RTL818X_R8187B_D:
1462                         chip_name = "RTL8187BvD";
1463                         priv->hw_rev = RTL8187BvD;
1464                         break;
1465                 case RTL818X_R8187B_E:
1466                         chip_name = "RTL8187BvE";
1467                         priv->hw_rev = RTL8187BvE;
1468                         break;
1469                 default:
1470                         chip_name = "RTL8187BvB (default)";
1471                         priv->hw_rev = RTL8187BvB;
1472                 }
1473         }
1474
1475         if (!priv->is_rtl8187b) {
1476                 for (i = 0; i < 2; i++) {
1477                         eeprom_93cx6_read(&eeprom,
1478                                           RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1479                                           &txpwr);
1480                         (*channel++).hw_value = txpwr & 0xFF;
1481                         (*channel++).hw_value = txpwr >> 8;
1482                 }
1483         } else {
1484                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1485                                   &txpwr);
1486                 (*channel++).hw_value = txpwr & 0xFF;
1487
1488                 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1489                 (*channel++).hw_value = txpwr & 0xFF;
1490
1491                 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1492                 (*channel++).hw_value = txpwr & 0xFF;
1493                 (*channel++).hw_value = txpwr >> 8;
1494         }
1495         /* Handle the differing rfkill GPIO bit in different models */
1496         priv->rfkill_mask = RFKILL_MASK_8187_89_97;
1497         if (product_id == 0x8197 || product_id == 0x8198) {
1498                 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_SELECT_GPIO, &reg);
1499                 if (reg & 0xFF00)
1500                         priv->rfkill_mask = RFKILL_MASK_8198;
1501         }
1502
1503         /*
1504          * XXX: Once this driver supports anything that requires
1505          *      beacons it must implement IEEE80211_TX_CTL_ASSIGN_SEQ.
1506          */
1507         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1508
1509         if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1510                 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1511                        " info!\n");
1512
1513         priv->rf = rtl8187_detect_rf(dev);
1514         dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1515                                   sizeof(struct rtl8187_tx_hdr) :
1516                                   sizeof(struct rtl8187b_tx_hdr);
1517         if (!priv->is_rtl8187b)
1518                 dev->queues = 1;
1519         else
1520                 dev->queues = 4;
1521
1522         err = ieee80211_register_hw(dev);
1523         if (err) {
1524                 printk(KERN_ERR "rtl8187: Cannot register device\n");
1525                 goto err_free_dmabuf;
1526         }
1527         mutex_init(&priv->conf_mutex);
1528         skb_queue_head_init(&priv->b_tx_status.queue);
1529
1530         wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
1531                    mac_addr, chip_name, priv->asic_rev, priv->rf->name,
1532                    priv->rfkill_mask);
1533
1534 #ifdef CONFIG_RTL8187_LEDS
1535         eeprom_93cx6_read(&eeprom, 0x3F, &reg);
1536         reg &= 0xFF;
1537         rtl8187_leds_init(dev, reg);
1538 #endif
1539         rtl8187_rfkill_init(dev);
1540
1541         return 0;
1542
1543  err_free_dmabuf:
1544         kfree(priv->io_dmabuf);
1545  err_free_dev:
1546         ieee80211_free_hw(dev);
1547         usb_set_intfdata(intf, NULL);
1548         usb_put_dev(udev);
1549         return err;
1550 }
1551
1552 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
1553 {
1554         struct ieee80211_hw *dev = usb_get_intfdata(intf);
1555         struct rtl8187_priv *priv;
1556
1557         if (!dev)
1558                 return;
1559
1560 #ifdef CONFIG_RTL8187_LEDS
1561         rtl8187_leds_exit(dev);
1562 #endif
1563         rtl8187_rfkill_exit(dev);
1564         ieee80211_unregister_hw(dev);
1565
1566         priv = dev->priv;
1567         usb_reset_device(priv->udev);
1568         usb_put_dev(interface_to_usbdev(intf));
1569         kfree(priv->io_dmabuf);
1570         ieee80211_free_hw(dev);
1571 }
1572
1573 static struct usb_driver rtl8187_driver = {
1574         .name           = KBUILD_MODNAME,
1575         .id_table       = rtl8187_table,
1576         .probe          = rtl8187_probe,
1577         .disconnect     = __devexit_p(rtl8187_disconnect),
1578 };
1579
1580 static int __init rtl8187_init(void)
1581 {
1582         return usb_register(&rtl8187_driver);
1583 }
1584
1585 static void __exit rtl8187_exit(void)
1586 {
1587         usb_deregister(&rtl8187_driver);
1588 }
1589
1590 module_init(rtl8187_init);
1591 module_exit(rtl8187_exit);