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networking: make skb_push & __skb_push return void pointers
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / net / wireless / realtek / 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 <andrea.merello@gmail.com>
6 *
7 * Based on the r8187 driver, which is:
8 * Copyright 2005 Andrea Merello <andrea.merello@gmail.com>, 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/usb.h>
24 #include <linux/slab.h>
25 #include <linux/delay.h>
26 #include <linux/etherdevice.h>
27 #include <linux/eeprom_93cx6.h>
28 #include <linux/module.h>
29 #include <net/mac80211.h>
30
31 #include "rtl8187.h"
32 #include "rtl8225.h"
33 #ifdef CONFIG_RTL8187_LEDS
34 #include "leds.h"
35 #endif
36 #include "rfkill.h"
37
38 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
39 MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
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[] = {
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 void rtl8187_tx(struct ieee80211_hw *dev,
231 struct ieee80211_tx_control *control,
232 struct sk_buff *skb)
233 {
234 struct rtl8187_priv *priv = dev->priv;
235 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
236 struct ieee80211_hdr *tx_hdr = (struct ieee80211_hdr *)(skb->data);
237 unsigned int ep;
238 void *buf;
239 struct urb *urb;
240 __le16 rts_dur = 0;
241 u32 flags;
242 int rc;
243
244 urb = usb_alloc_urb(0, GFP_ATOMIC);
245 if (!urb) {
246 kfree_skb(skb);
247 return;
248 }
249
250 flags = skb->len;
251 flags |= RTL818X_TX_DESC_FLAG_NO_ENC;
252
253 flags |= ieee80211_get_tx_rate(dev, info)->hw_value << 24;
254 if (ieee80211_has_morefrags(tx_hdr->frame_control))
255 flags |= RTL818X_TX_DESC_FLAG_MOREFRAG;
256
257 /* HW will perform RTS-CTS when only RTS flags is set.
258 * HW will perform CTS-to-self when both RTS and CTS flags are set.
259 * RTS rate and RTS duration will be used also for CTS-to-self.
260 */
261 if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) {
262 flags |= RTL818X_TX_DESC_FLAG_RTS;
263 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
264 rts_dur = ieee80211_rts_duration(dev, priv->vif,
265 skb->len, info);
266 } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
267 flags |= RTL818X_TX_DESC_FLAG_RTS | RTL818X_TX_DESC_FLAG_CTS;
268 flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
269 rts_dur = ieee80211_ctstoself_duration(dev, priv->vif,
270 skb->len, info);
271 }
272
273 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
274 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
275 priv->seqno += 0x10;
276 tx_hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
277 tx_hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
278 }
279
280 if (!priv->is_rtl8187b) {
281 struct rtl8187_tx_hdr *hdr = skb_push(skb, sizeof(*hdr));
282 hdr->flags = cpu_to_le32(flags);
283 hdr->len = 0;
284 hdr->rts_duration = rts_dur;
285 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
286 buf = hdr;
287
288 ep = 2;
289 } else {
290 /* fc needs to be calculated before skb_push() */
291 unsigned int epmap[4] = { 6, 7, 5, 4 };
292 u16 fc = le16_to_cpu(tx_hdr->frame_control);
293
294 struct rtl8187b_tx_hdr *hdr = skb_push(skb, sizeof(*hdr));
295 struct ieee80211_rate *txrate =
296 ieee80211_get_tx_rate(dev, info);
297 memset(hdr, 0, sizeof(*hdr));
298 hdr->flags = cpu_to_le32(flags);
299 hdr->rts_duration = rts_dur;
300 hdr->retry = cpu_to_le32((info->control.rates[0].count - 1) << 8);
301 hdr->tx_duration =
302 ieee80211_generic_frame_duration(dev, priv->vif,
303 info->band,
304 skb->len, txrate);
305 buf = hdr;
306
307 if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)
308 ep = 12;
309 else
310 ep = epmap[skb_get_queue_mapping(skb)];
311 }
312
313 info->rate_driver_data[0] = dev;
314 info->rate_driver_data[1] = urb;
315
316 usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, ep),
317 buf, skb->len, rtl8187_tx_cb, skb);
318 urb->transfer_flags |= URB_ZERO_PACKET;
319 usb_anchor_urb(urb, &priv->anchored);
320 rc = usb_submit_urb(urb, GFP_ATOMIC);
321 if (rc < 0) {
322 usb_unanchor_urb(urb);
323 kfree_skb(skb);
324 }
325 usb_free_urb(urb);
326 }
327
328 static void rtl8187_rx_cb(struct urb *urb)
329 {
330 struct sk_buff *skb = (struct sk_buff *)urb->context;
331 struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
332 struct ieee80211_hw *dev = info->dev;
333 struct rtl8187_priv *priv = dev->priv;
334 struct ieee80211_rx_status rx_status = { 0 };
335 int rate, signal;
336 u32 flags;
337 unsigned long f;
338
339 spin_lock_irqsave(&priv->rx_queue.lock, f);
340 __skb_unlink(skb, &priv->rx_queue);
341 spin_unlock_irqrestore(&priv->rx_queue.lock, f);
342 skb_put(skb, urb->actual_length);
343
344 if (unlikely(urb->status)) {
345 dev_kfree_skb_irq(skb);
346 return;
347 }
348
349 if (!priv->is_rtl8187b) {
350 struct rtl8187_rx_hdr *hdr =
351 (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
352 flags = le32_to_cpu(hdr->flags);
353 /* As with the RTL8187B below, the AGC is used to calculate
354 * signal strength. In this case, the scaling
355 * constants are derived from the output of p54usb.
356 */
357 signal = -4 - ((27 * hdr->agc) >> 6);
358 rx_status.antenna = (hdr->signal >> 7) & 1;
359 rx_status.mactime = le64_to_cpu(hdr->mac_time);
360 } else {
361 struct rtl8187b_rx_hdr *hdr =
362 (typeof(hdr))(skb_tail_pointer(skb) - sizeof(*hdr));
363 /* The Realtek datasheet for the RTL8187B shows that the RX
364 * header contains the following quantities: signal quality,
365 * RSSI, AGC, the received power in dB, and the measured SNR.
366 * In testing, none of these quantities show qualitative
367 * agreement with AP signal strength, except for the AGC,
368 * which is inversely proportional to the strength of the
369 * signal. In the following, the signal strength
370 * is derived from the AGC. The arbitrary scaling constants
371 * are chosen to make the results close to the values obtained
372 * for a BCM4312 using b43 as the driver. The noise is ignored
373 * for now.
374 */
375 flags = le32_to_cpu(hdr->flags);
376 signal = 14 - hdr->agc / 2;
377 rx_status.antenna = (hdr->rssi >> 7) & 1;
378 rx_status.mactime = le64_to_cpu(hdr->mac_time);
379 }
380
381 rx_status.signal = signal;
382 priv->signal = signal;
383 rate = (flags >> 20) & 0xF;
384 skb_trim(skb, flags & 0x0FFF);
385 rx_status.rate_idx = rate;
386 rx_status.freq = dev->conf.chandef.chan->center_freq;
387 rx_status.band = dev->conf.chandef.chan->band;
388 rx_status.flag |= RX_FLAG_MACTIME_START;
389 if (flags & RTL818X_RX_DESC_FLAG_SPLCP)
390 rx_status.enc_flags |= RX_ENC_FLAG_SHORTPRE;
391 if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
392 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
393 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
394 ieee80211_rx_irqsafe(dev, skb);
395
396 skb = dev_alloc_skb(RTL8187_MAX_RX);
397 if (unlikely(!skb)) {
398 /* TODO check rx queue length and refill *somewhere* */
399 return;
400 }
401
402 info = (struct rtl8187_rx_info *)skb->cb;
403 info->urb = urb;
404 info->dev = dev;
405 urb->transfer_buffer = skb_tail_pointer(skb);
406 urb->context = skb;
407 skb_queue_tail(&priv->rx_queue, skb);
408
409 usb_anchor_urb(urb, &priv->anchored);
410 if (usb_submit_urb(urb, GFP_ATOMIC)) {
411 usb_unanchor_urb(urb);
412 skb_unlink(skb, &priv->rx_queue);
413 dev_kfree_skb_irq(skb);
414 }
415 }
416
417 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
418 {
419 struct rtl8187_priv *priv = dev->priv;
420 struct urb *entry = NULL;
421 struct sk_buff *skb;
422 struct rtl8187_rx_info *info;
423 int ret = 0;
424
425 while (skb_queue_len(&priv->rx_queue) < 32) {
426 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
427 if (!skb) {
428 ret = -ENOMEM;
429 goto err;
430 }
431 entry = usb_alloc_urb(0, GFP_KERNEL);
432 if (!entry) {
433 ret = -ENOMEM;
434 goto err;
435 }
436 usb_fill_bulk_urb(entry, priv->udev,
437 usb_rcvbulkpipe(priv->udev,
438 priv->is_rtl8187b ? 3 : 1),
439 skb_tail_pointer(skb),
440 RTL8187_MAX_RX, rtl8187_rx_cb, skb);
441 info = (struct rtl8187_rx_info *)skb->cb;
442 info->urb = entry;
443 info->dev = dev;
444 skb_queue_tail(&priv->rx_queue, skb);
445 usb_anchor_urb(entry, &priv->anchored);
446 ret = usb_submit_urb(entry, GFP_KERNEL);
447 usb_put_urb(entry);
448 if (ret) {
449 skb_unlink(skb, &priv->rx_queue);
450 usb_unanchor_urb(entry);
451 goto err;
452 }
453 }
454 return ret;
455
456 err:
457 kfree_skb(skb);
458 usb_kill_anchored_urbs(&priv->anchored);
459 return ret;
460 }
461
462 static void rtl8187b_status_cb(struct urb *urb)
463 {
464 struct ieee80211_hw *hw = (struct ieee80211_hw *)urb->context;
465 struct rtl8187_priv *priv = hw->priv;
466 u64 val;
467 unsigned int cmd_type;
468
469 if (unlikely(urb->status))
470 return;
471
472 /*
473 * Read from status buffer:
474 *
475 * bits [30:31] = cmd type:
476 * - 0 indicates tx beacon interrupt
477 * - 1 indicates tx close descriptor
478 *
479 * In the case of tx beacon interrupt:
480 * [0:9] = Last Beacon CW
481 * [10:29] = reserved
482 * [30:31] = 00b
483 * [32:63] = Last Beacon TSF
484 *
485 * If it's tx close descriptor:
486 * [0:7] = Packet Retry Count
487 * [8:14] = RTS Retry Count
488 * [15] = TOK
489 * [16:27] = Sequence No
490 * [28] = LS
491 * [29] = FS
492 * [30:31] = 01b
493 * [32:47] = unused (reserved?)
494 * [48:63] = MAC Used Time
495 */
496 val = le64_to_cpu(priv->b_tx_status.buf);
497
498 cmd_type = (val >> 30) & 0x3;
499 if (cmd_type == 1) {
500 unsigned int pkt_rc, seq_no;
501 bool tok;
502 struct sk_buff *skb;
503 struct ieee80211_hdr *ieee80211hdr;
504 unsigned long flags;
505
506 pkt_rc = val & 0xFF;
507 tok = val & (1 << 15);
508 seq_no = (val >> 16) & 0xFFF;
509
510 spin_lock_irqsave(&priv->b_tx_status.queue.lock, flags);
511 skb_queue_reverse_walk(&priv->b_tx_status.queue, skb) {
512 ieee80211hdr = (struct ieee80211_hdr *)skb->data;
513
514 /*
515 * While testing, it was discovered that the seq_no
516 * doesn't actually contains the sequence number.
517 * Instead of returning just the 12 bits of sequence
518 * number, hardware is returning entire sequence control
519 * (fragment number plus sequence number) in a 12 bit
520 * only field overflowing after some time. As a
521 * workaround, just consider the lower bits, and expect
522 * it's unlikely we wrongly ack some sent data
523 */
524 if ((le16_to_cpu(ieee80211hdr->seq_ctrl)
525 & 0xFFF) == seq_no)
526 break;
527 }
528 if (skb != (struct sk_buff *) &priv->b_tx_status.queue) {
529 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
530
531 __skb_unlink(skb, &priv->b_tx_status.queue);
532 if (tok)
533 info->flags |= IEEE80211_TX_STAT_ACK;
534 info->status.rates[0].count = pkt_rc + 1;
535
536 ieee80211_tx_status_irqsafe(hw, skb);
537 }
538 spin_unlock_irqrestore(&priv->b_tx_status.queue.lock, flags);
539 }
540
541 usb_anchor_urb(urb, &priv->anchored);
542 if (usb_submit_urb(urb, GFP_ATOMIC))
543 usb_unanchor_urb(urb);
544 }
545
546 static int rtl8187b_init_status_urb(struct ieee80211_hw *dev)
547 {
548 struct rtl8187_priv *priv = dev->priv;
549 struct urb *entry;
550 int ret = 0;
551
552 entry = usb_alloc_urb(0, GFP_KERNEL);
553 if (!entry)
554 return -ENOMEM;
555
556 usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, 9),
557 &priv->b_tx_status.buf, sizeof(priv->b_tx_status.buf),
558 rtl8187b_status_cb, dev);
559
560 usb_anchor_urb(entry, &priv->anchored);
561 ret = usb_submit_urb(entry, GFP_KERNEL);
562 if (ret)
563 usb_unanchor_urb(entry);
564 usb_free_urb(entry);
565
566 return ret;
567 }
568
569 static void rtl8187_set_anaparam(struct rtl8187_priv *priv, bool rfon)
570 {
571 u32 anaparam, anaparam2;
572 u8 anaparam3, reg;
573
574 if (!priv->is_rtl8187b) {
575 if (rfon) {
576 anaparam = RTL8187_RTL8225_ANAPARAM_ON;
577 anaparam2 = RTL8187_RTL8225_ANAPARAM2_ON;
578 } else {
579 anaparam = RTL8187_RTL8225_ANAPARAM_OFF;
580 anaparam2 = RTL8187_RTL8225_ANAPARAM2_OFF;
581 }
582 } else {
583 if (rfon) {
584 anaparam = RTL8187B_RTL8225_ANAPARAM_ON;
585 anaparam2 = RTL8187B_RTL8225_ANAPARAM2_ON;
586 anaparam3 = RTL8187B_RTL8225_ANAPARAM3_ON;
587 } else {
588 anaparam = RTL8187B_RTL8225_ANAPARAM_OFF;
589 anaparam2 = RTL8187B_RTL8225_ANAPARAM2_OFF;
590 anaparam3 = RTL8187B_RTL8225_ANAPARAM3_OFF;
591 }
592 }
593
594 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
595 RTL818X_EEPROM_CMD_CONFIG);
596 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
597 reg |= RTL818X_CONFIG3_ANAPARAM_WRITE;
598 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
599 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
600 rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
601 if (priv->is_rtl8187b)
602 rtl818x_iowrite8(priv, &priv->map->ANAPARAM3A, anaparam3);
603 reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
604 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
605 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
606 RTL818X_EEPROM_CMD_NORMAL);
607 }
608
609 static int rtl8187_cmd_reset(struct ieee80211_hw *dev)
610 {
611 struct rtl8187_priv *priv = dev->priv;
612 u8 reg;
613 int i;
614
615 reg = rtl818x_ioread8(priv, &priv->map->CMD);
616 reg &= (1 << 1);
617 reg |= RTL818X_CMD_RESET;
618 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
619
620 i = 10;
621 do {
622 msleep(2);
623 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
624 RTL818X_CMD_RESET))
625 break;
626 } while (--i);
627
628 if (!i) {
629 wiphy_err(dev->wiphy, "Reset timeout!\n");
630 return -ETIMEDOUT;
631 }
632
633 /* reload registers from eeprom */
634 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
635
636 i = 10;
637 do {
638 msleep(4);
639 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
640 RTL818X_EEPROM_CMD_CONFIG))
641 break;
642 } while (--i);
643
644 if (!i) {
645 wiphy_err(dev->wiphy, "eeprom reset timeout!\n");
646 return -ETIMEDOUT;
647 }
648
649 return 0;
650 }
651
652 static int rtl8187_init_hw(struct ieee80211_hw *dev)
653 {
654 struct rtl8187_priv *priv = dev->priv;
655 u8 reg;
656 int res;
657
658 /* reset */
659 rtl8187_set_anaparam(priv, true);
660
661 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
662
663 msleep(200);
664 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
665 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
666 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
667 msleep(200);
668
669 res = rtl8187_cmd_reset(dev);
670 if (res)
671 return res;
672
673 rtl8187_set_anaparam(priv, true);
674
675 /* setup card */
676 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
677 rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
678
679 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
680 rtl818x_iowrite8(priv, &priv->map->GPIO0, 1);
681 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
682
683 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
684
685 rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
686 reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
687 reg &= 0x3F;
688 reg |= 0x80;
689 rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
690
691 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
692
693 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
694 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
695 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
696
697 // TODO: set RESP_RATE and BRSR properly
698 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
699 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
700
701 /* host_usb_init */
702 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
703 rtl818x_iowrite8(priv, &priv->map->GPIO0, 0);
704 reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
705 rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
706 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
707 rtl818x_iowrite8(priv, &priv->map->GPIO0, 0x20);
708 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
709 rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
710 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
711 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
712 msleep(100);
713
714 rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
715 rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
716 rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
717 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
718 RTL818X_EEPROM_CMD_CONFIG);
719 rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
720 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
721 RTL818X_EEPROM_CMD_NORMAL);
722 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
723 msleep(100);
724
725 priv->rf->init(dev);
726
727 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
728 reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
729 rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
730 rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
731 rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
732 rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
733 rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
734
735 return 0;
736 }
737
738 static const u8 rtl8187b_reg_table[][3] = {
739 {0xF0, 0x32, 0}, {0xF1, 0x32, 0}, {0xF2, 0x00, 0}, {0xF3, 0x00, 0},
740 {0xF4, 0x32, 0}, {0xF5, 0x43, 0}, {0xF6, 0x00, 0}, {0xF7, 0x00, 0},
741 {0xF8, 0x46, 0}, {0xF9, 0xA4, 0}, {0xFA, 0x00, 0}, {0xFB, 0x00, 0},
742 {0xFC, 0x96, 0}, {0xFD, 0xA4, 0}, {0xFE, 0x00, 0}, {0xFF, 0x00, 0},
743
744 {0x58, 0x4B, 1}, {0x59, 0x00, 1}, {0x5A, 0x4B, 1}, {0x5B, 0x00, 1},
745 {0x60, 0x4B, 1}, {0x61, 0x09, 1}, {0x62, 0x4B, 1}, {0x63, 0x09, 1},
746 {0xCE, 0x0F, 1}, {0xCF, 0x00, 1}, {0xF0, 0x4E, 1}, {0xF1, 0x01, 1},
747 {0xF2, 0x02, 1}, {0xF3, 0x03, 1}, {0xF4, 0x04, 1}, {0xF5, 0x05, 1},
748 {0xF6, 0x06, 1}, {0xF7, 0x07, 1}, {0xF8, 0x08, 1},
749
750 {0x4E, 0x00, 2}, {0x0C, 0x04, 2}, {0x21, 0x61, 2}, {0x22, 0x68, 2},
751 {0x23, 0x6F, 2}, {0x24, 0x76, 2}, {0x25, 0x7D, 2}, {0x26, 0x84, 2},
752 {0x27, 0x8D, 2}, {0x4D, 0x08, 2}, {0x50, 0x05, 2}, {0x51, 0xF5, 2},
753 {0x52, 0x04, 2}, {0x53, 0xA0, 2}, {0x54, 0x1F, 2}, {0x55, 0x23, 2},
754 {0x56, 0x45, 2}, {0x57, 0x67, 2}, {0x58, 0x08, 2}, {0x59, 0x08, 2},
755 {0x5A, 0x08, 2}, {0x5B, 0x08, 2}, {0x60, 0x08, 2}, {0x61, 0x08, 2},
756 {0x62, 0x08, 2}, {0x63, 0x08, 2}, {0x64, 0xCF, 2},
757
758 {0x5B, 0x40, 0}, {0x84, 0x88, 0}, {0x85, 0x24, 0}, {0x88, 0x54, 0},
759 {0x8B, 0xB8, 0}, {0x8C, 0x07, 0}, {0x8D, 0x00, 0}, {0x94, 0x1B, 0},
760 {0x95, 0x12, 0}, {0x96, 0x00, 0}, {0x97, 0x06, 0}, {0x9D, 0x1A, 0},
761 {0x9F, 0x10, 0}, {0xB4, 0x22, 0}, {0xBE, 0x80, 0}, {0xDB, 0x00, 0},
762 {0xEE, 0x00, 0}, {0x4C, 0x00, 2},
763
764 {0x9F, 0x00, 3}, {0x8C, 0x01, 0}, {0x8D, 0x10, 0}, {0x8E, 0x08, 0},
765 {0x8F, 0x00, 0}
766 };
767
768 static int rtl8187b_init_hw(struct ieee80211_hw *dev)
769 {
770 struct rtl8187_priv *priv = dev->priv;
771 int res, i;
772 u8 reg;
773
774 rtl8187_set_anaparam(priv, true);
775
776 /* Reset PLL sequence on 8187B. Realtek note: reduces power
777 * consumption about 30 mA */
778 rtl818x_iowrite8(priv, (u8 *)0xFF61, 0x10);
779 reg = rtl818x_ioread8(priv, (u8 *)0xFF62);
780 rtl818x_iowrite8(priv, (u8 *)0xFF62, reg & ~(1 << 5));
781 rtl818x_iowrite8(priv, (u8 *)0xFF62, reg | (1 << 5));
782
783 res = rtl8187_cmd_reset(dev);
784 if (res)
785 return res;
786
787 rtl8187_set_anaparam(priv, true);
788
789 /* BRSR (Basic Rate Set Register) on 8187B looks to be the same as
790 * RESP_RATE on 8187L in Realtek sources: each bit should be each
791 * one of the 12 rates, all are enabled */
792 rtl818x_iowrite16(priv, (__le16 *)0xFF34, 0x0FFF);
793
794 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
795 reg |= RTL818X_CW_CONF_PERPACKET_RETRY;
796 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
797
798 /* Auto Rate Fallback Register (ARFR): 1M-54M setting */
799 rtl818x_iowrite16_idx(priv, (__le16 *)0xFFE0, 0x0FFF, 1);
800 rtl818x_iowrite8_idx(priv, (u8 *)0xFFE2, 0x00, 1);
801
802 rtl818x_iowrite16_idx(priv, (__le16 *)0xFFD4, 0xFFFF, 1);
803
804 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
805 RTL818X_EEPROM_CMD_CONFIG);
806 reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
807 rtl818x_iowrite8(priv, &priv->map->CONFIG1, (reg & 0x3F) | 0x80);
808 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
809 RTL818X_EEPROM_CMD_NORMAL);
810
811 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
812 for (i = 0; i < ARRAY_SIZE(rtl8187b_reg_table); i++) {
813 rtl818x_iowrite8_idx(priv,
814 (u8 *)(uintptr_t)
815 (rtl8187b_reg_table[i][0] | 0xFF00),
816 rtl8187b_reg_table[i][1],
817 rtl8187b_reg_table[i][2]);
818 }
819
820 rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);
821 rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);
822
823 rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF0, 0, 1);
824 rtl818x_iowrite32_idx(priv, (__le32 *)0xFFF4, 0, 1);
825 rtl818x_iowrite8_idx(priv, (u8 *)0xFFF8, 0, 1);
826
827 rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x00004001);
828
829 /* RFSW_CTRL register */
830 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x569A, 2);
831
832 rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
833 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);
834 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FFF);
835 msleep(100);
836
837 priv->rf->init(dev);
838
839 reg = RTL818X_CMD_TX_ENABLE | RTL818X_CMD_RX_ENABLE;
840 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
841 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
842
843 rtl818x_iowrite8(priv, (u8 *)0xFE41, 0xF4);
844 rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x00);
845 rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
846 rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
847 rtl818x_iowrite8(priv, (u8 *)0xFE40, 0x0F);
848 rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x00);
849 rtl818x_iowrite8(priv, (u8 *)0xFE42, 0x01);
850
851 reg = rtl818x_ioread8(priv, (u8 *)0xFFDB);
852 rtl818x_iowrite8(priv, (u8 *)0xFFDB, reg | (1 << 2));
853 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF72, 0x59FA, 3);
854 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF74, 0x59D2, 3);
855 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF76, 0x59D2, 3);
856 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF78, 0x19FA, 3);
857 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7A, 0x19FA, 3);
858 rtl818x_iowrite16_idx(priv, (__le16 *)0xFF7C, 0x00D0, 3);
859 rtl818x_iowrite8(priv, (u8 *)0xFF61, 0);
860 rtl818x_iowrite8_idx(priv, (u8 *)0xFF80, 0x0F, 1);
861 rtl818x_iowrite8_idx(priv, (u8 *)0xFF83, 0x03, 1);
862 rtl818x_iowrite8(priv, (u8 *)0xFFDA, 0x10);
863 rtl818x_iowrite8_idx(priv, (u8 *)0xFF4D, 0x08, 2);
864
865 rtl818x_iowrite32(priv, &priv->map->HSSI_PARA, 0x0600321B);
866
867 rtl818x_iowrite16_idx(priv, (__le16 *)0xFFEC, 0x0800, 1);
868
869 priv->slot_time = 0x9;
870 priv->aifsn[0] = 2; /* AIFSN[AC_VO] */
871 priv->aifsn[1] = 2; /* AIFSN[AC_VI] */
872 priv->aifsn[2] = 7; /* AIFSN[AC_BK] */
873 priv->aifsn[3] = 3; /* AIFSN[AC_BE] */
874 rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0);
875
876 /* ENEDCA flag must always be set, transmit issues? */
877 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
878
879 return 0;
880 }
881
882 static void rtl8187_work(struct work_struct *work)
883 {
884 /* The RTL8187 returns the retry count through register 0xFFFA. In
885 * addition, it appears to be a cumulative retry count, not the
886 * value for the current TX packet. When multiple TX entries are
887 * waiting in the queue, the retry count will be the total for all.
888 * The "error" may matter for purposes of rate setting, but there is
889 * no other choice with this hardware.
890 */
891 struct rtl8187_priv *priv = container_of(work, struct rtl8187_priv,
892 work.work);
893 struct ieee80211_tx_info *info;
894 struct ieee80211_hw *dev = priv->dev;
895 static u16 retry;
896 u16 tmp;
897 u16 avg_retry;
898 int length;
899
900 mutex_lock(&priv->conf_mutex);
901 tmp = rtl818x_ioread16(priv, (__le16 *)0xFFFA);
902 length = skb_queue_len(&priv->b_tx_status.queue);
903 if (unlikely(!length))
904 length = 1;
905 if (unlikely(tmp < retry))
906 tmp = retry;
907 avg_retry = (tmp - retry) / length;
908 while (skb_queue_len(&priv->b_tx_status.queue) > 0) {
909 struct sk_buff *old_skb;
910
911 old_skb = skb_dequeue(&priv->b_tx_status.queue);
912 info = IEEE80211_SKB_CB(old_skb);
913 info->status.rates[0].count = avg_retry + 1;
914 if (info->status.rates[0].count > RETRY_COUNT)
915 info->flags &= ~IEEE80211_TX_STAT_ACK;
916 ieee80211_tx_status_irqsafe(dev, old_skb);
917 }
918 retry = tmp;
919 mutex_unlock(&priv->conf_mutex);
920 }
921
922 static int rtl8187_start(struct ieee80211_hw *dev)
923 {
924 struct rtl8187_priv *priv = dev->priv;
925 u32 reg;
926 int ret;
927
928 mutex_lock(&priv->conf_mutex);
929
930 ret = (!priv->is_rtl8187b) ? rtl8187_init_hw(dev) :
931 rtl8187b_init_hw(dev);
932 if (ret)
933 goto rtl8187_start_exit;
934
935 init_usb_anchor(&priv->anchored);
936 priv->dev = dev;
937
938 if (priv->is_rtl8187b) {
939 reg = RTL818X_RX_CONF_MGMT |
940 RTL818X_RX_CONF_DATA |
941 RTL818X_RX_CONF_BROADCAST |
942 RTL818X_RX_CONF_NICMAC |
943 RTL818X_RX_CONF_BSSID |
944 (7 << 13 /* RX FIFO threshold NONE */) |
945 (7 << 10 /* MAX RX DMA */) |
946 RTL818X_RX_CONF_RX_AUTORESETPHY |
947 RTL818X_RX_CONF_ONLYERLPKT;
948 priv->rx_conf = reg;
949 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
950
951 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
952 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN;
953 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL;
954 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
955 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
956
957 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
958 RTL818X_TX_CONF_HW_SEQNUM |
959 RTL818X_TX_CONF_DISREQQSIZE |
960 (RETRY_COUNT << 8 /* short retry limit */) |
961 (RETRY_COUNT << 0 /* long retry limit */) |
962 (7 << 21 /* MAX TX DMA */));
963 ret = rtl8187_init_urbs(dev);
964 if (ret)
965 goto rtl8187_start_exit;
966 ret = rtl8187b_init_status_urb(dev);
967 if (ret)
968 usb_kill_anchored_urbs(&priv->anchored);
969 goto rtl8187_start_exit;
970 }
971
972 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
973
974 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
975 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
976
977 ret = rtl8187_init_urbs(dev);
978 if (ret)
979 goto rtl8187_start_exit;
980
981 reg = RTL818X_RX_CONF_ONLYERLPKT |
982 RTL818X_RX_CONF_RX_AUTORESETPHY |
983 RTL818X_RX_CONF_BSSID |
984 RTL818X_RX_CONF_MGMT |
985 RTL818X_RX_CONF_DATA |
986 (7 << 13 /* RX FIFO threshold NONE */) |
987 (7 << 10 /* MAX RX DMA */) |
988 RTL818X_RX_CONF_BROADCAST |
989 RTL818X_RX_CONF_NICMAC;
990
991 priv->rx_conf = reg;
992 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
993
994 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
995 reg &= ~RTL818X_CW_CONF_PERPACKET_CW;
996 reg |= RTL818X_CW_CONF_PERPACKET_RETRY;
997 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
998
999 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
1000 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN;
1001 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL;
1002 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
1003 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
1004
1005 reg = RTL818X_TX_CONF_CW_MIN |
1006 (7 << 21 /* MAX TX DMA */) |
1007 RTL818X_TX_CONF_NO_ICV;
1008 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1009
1010 reg = rtl818x_ioread8(priv, &priv->map->CMD);
1011 reg |= RTL818X_CMD_TX_ENABLE;
1012 reg |= RTL818X_CMD_RX_ENABLE;
1013 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1014 INIT_DELAYED_WORK(&priv->work, rtl8187_work);
1015
1016 rtl8187_start_exit:
1017 mutex_unlock(&priv->conf_mutex);
1018 return ret;
1019 }
1020
1021 static void rtl8187_stop(struct ieee80211_hw *dev)
1022 {
1023 struct rtl8187_priv *priv = dev->priv;
1024 struct sk_buff *skb;
1025 u32 reg;
1026
1027 mutex_lock(&priv->conf_mutex);
1028 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
1029
1030 reg = rtl818x_ioread8(priv, &priv->map->CMD);
1031 reg &= ~RTL818X_CMD_TX_ENABLE;
1032 reg &= ~RTL818X_CMD_RX_ENABLE;
1033 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
1034
1035 priv->rf->stop(dev);
1036 rtl8187_set_anaparam(priv, false);
1037
1038 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1039 reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
1040 rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
1041 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1042
1043 while ((skb = skb_dequeue(&priv->b_tx_status.queue)))
1044 dev_kfree_skb_any(skb);
1045
1046 usb_kill_anchored_urbs(&priv->anchored);
1047 mutex_unlock(&priv->conf_mutex);
1048
1049 if (!priv->is_rtl8187b)
1050 cancel_delayed_work_sync(&priv->work);
1051 }
1052
1053 static u64 rtl8187_get_tsf(struct ieee80211_hw *dev, struct ieee80211_vif *vif)
1054 {
1055 struct rtl8187_priv *priv = dev->priv;
1056
1057 return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
1058 (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
1059 }
1060
1061
1062 static void rtl8187_beacon_work(struct work_struct *work)
1063 {
1064 struct rtl8187_vif *vif_priv =
1065 container_of(work, struct rtl8187_vif, beacon_work.work);
1066 struct ieee80211_vif *vif =
1067 container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
1068 struct ieee80211_hw *dev = vif_priv->dev;
1069 struct ieee80211_mgmt *mgmt;
1070 struct sk_buff *skb;
1071
1072 /* don't overflow the tx ring */
1073 if (ieee80211_queue_stopped(dev, 0))
1074 goto resched;
1075
1076 /* grab a fresh beacon */
1077 skb = ieee80211_beacon_get(dev, vif);
1078 if (!skb)
1079 goto resched;
1080
1081 /*
1082 * update beacon timestamp w/ TSF value
1083 * TODO: make hardware update beacon timestamp
1084 */
1085 mgmt = (struct ieee80211_mgmt *)skb->data;
1086 mgmt->u.beacon.timestamp = cpu_to_le64(rtl8187_get_tsf(dev, vif));
1087
1088 /* TODO: use actual beacon queue */
1089 skb_set_queue_mapping(skb, 0);
1090
1091 rtl8187_tx(dev, NULL, skb);
1092
1093 resched:
1094 /*
1095 * schedule next beacon
1096 * TODO: use hardware support for beacon timing
1097 */
1098 schedule_delayed_work(&vif_priv->beacon_work,
1099 usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
1100 }
1101
1102
1103 static int rtl8187_add_interface(struct ieee80211_hw *dev,
1104 struct ieee80211_vif *vif)
1105 {
1106 struct rtl8187_priv *priv = dev->priv;
1107 struct rtl8187_vif *vif_priv;
1108 int i;
1109 int ret = -EOPNOTSUPP;
1110
1111 mutex_lock(&priv->conf_mutex);
1112 if (priv->vif)
1113 goto exit;
1114
1115 switch (vif->type) {
1116 case NL80211_IFTYPE_STATION:
1117 case NL80211_IFTYPE_ADHOC:
1118 break;
1119 default:
1120 goto exit;
1121 }
1122
1123 ret = 0;
1124 priv->vif = vif;
1125
1126 /* Initialize driver private area */
1127 vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1128 vif_priv->dev = dev;
1129 INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8187_beacon_work);
1130 vif_priv->enable_beacon = false;
1131
1132
1133 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1134 for (i = 0; i < ETH_ALEN; i++)
1135 rtl818x_iowrite8(priv, &priv->map->MAC[i],
1136 ((u8 *)vif->addr)[i]);
1137 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1138
1139 exit:
1140 mutex_unlock(&priv->conf_mutex);
1141 return ret;
1142 }
1143
1144 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
1145 struct ieee80211_vif *vif)
1146 {
1147 struct rtl8187_priv *priv = dev->priv;
1148 mutex_lock(&priv->conf_mutex);
1149 priv->vif = NULL;
1150 mutex_unlock(&priv->conf_mutex);
1151 }
1152
1153 static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
1154 {
1155 struct rtl8187_priv *priv = dev->priv;
1156 struct ieee80211_conf *conf = &dev->conf;
1157 u32 reg;
1158
1159 mutex_lock(&priv->conf_mutex);
1160 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1161 /* Enable TX loopback on MAC level to avoid TX during channel
1162 * changes, as this has be seen to causes problems and the
1163 * card will stop work until next reset
1164 */
1165 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
1166 reg | RTL818X_TX_CONF_LOOPBACK_MAC);
1167 priv->rf->set_chan(dev, conf);
1168 msleep(10);
1169 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
1170
1171 rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
1172 rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
1173 rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
1174 rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
1175 mutex_unlock(&priv->conf_mutex);
1176 return 0;
1177 }
1178
1179 /*
1180 * With 8187B, AC_*_PARAM clashes with FEMR definition in struct rtl818x_csr for
1181 * example. Thus we have to use raw values for AC_*_PARAM register addresses.
1182 */
1183 static __le32 *rtl8187b_ac_addr[4] = {
1184 (__le32 *) 0xFFF0, /* AC_VO */
1185 (__le32 *) 0xFFF4, /* AC_VI */
1186 (__le32 *) 0xFFFC, /* AC_BK */
1187 (__le32 *) 0xFFF8, /* AC_BE */
1188 };
1189
1190 #define SIFS_TIME 0xa
1191
1192 static void rtl8187_conf_erp(struct rtl8187_priv *priv, bool use_short_slot,
1193 bool use_short_preamble)
1194 {
1195 if (priv->is_rtl8187b) {
1196 u8 difs, eifs;
1197 u16 ack_timeout;
1198 int queue;
1199
1200 if (use_short_slot) {
1201 priv->slot_time = 0x9;
1202 difs = 0x1c;
1203 eifs = 0x53;
1204 } else {
1205 priv->slot_time = 0x14;
1206 difs = 0x32;
1207 eifs = 0x5b;
1208 }
1209 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1210 rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
1211 rtl818x_iowrite8(priv, &priv->map->DIFS, difs);
1212
1213 /*
1214 * BRSR+1 on 8187B is in fact EIFS register
1215 * Value in units of 4 us
1216 */
1217 rtl818x_iowrite8(priv, (u8 *)&priv->map->BRSR + 1, eifs);
1218
1219 /*
1220 * For 8187B, CARRIER_SENSE_COUNTER is in fact ack timeout
1221 * register. In units of 4 us like eifs register
1222 * ack_timeout = ack duration + plcp + difs + preamble
1223 */
1224 ack_timeout = 112 + 48 + difs;
1225 if (use_short_preamble)
1226 ack_timeout += 72;
1227 else
1228 ack_timeout += 144;
1229 rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER,
1230 DIV_ROUND_UP(ack_timeout, 4));
1231
1232 for (queue = 0; queue < 4; queue++)
1233 rtl818x_iowrite8(priv, (u8 *) rtl8187b_ac_addr[queue],
1234 priv->aifsn[queue] * priv->slot_time +
1235 SIFS_TIME);
1236 } else {
1237 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
1238 if (use_short_slot) {
1239 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
1240 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
1241 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
1242 } else {
1243 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
1244 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
1245 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
1246 }
1247 }
1248 }
1249
1250 static void rtl8187_bss_info_changed(struct ieee80211_hw *dev,
1251 struct ieee80211_vif *vif,
1252 struct ieee80211_bss_conf *info,
1253 u32 changed)
1254 {
1255 struct rtl8187_priv *priv = dev->priv;
1256 struct rtl8187_vif *vif_priv;
1257 int i;
1258 u8 reg;
1259
1260 vif_priv = (struct rtl8187_vif *)&vif->drv_priv;
1261
1262 if (changed & BSS_CHANGED_BSSID) {
1263 mutex_lock(&priv->conf_mutex);
1264 for (i = 0; i < ETH_ALEN; i++)
1265 rtl818x_iowrite8(priv, &priv->map->BSSID[i],
1266 info->bssid[i]);
1267
1268 if (priv->is_rtl8187b)
1269 reg = RTL818X_MSR_ENEDCA;
1270 else
1271 reg = 0;
1272
1273 if (is_valid_ether_addr(info->bssid)) {
1274 if (vif->type == NL80211_IFTYPE_ADHOC)
1275 reg |= RTL818X_MSR_ADHOC;
1276 else
1277 reg |= RTL818X_MSR_INFRA;
1278 }
1279 else
1280 reg |= RTL818X_MSR_NO_LINK;
1281
1282 rtl818x_iowrite8(priv, &priv->map->MSR, reg);
1283
1284 mutex_unlock(&priv->conf_mutex);
1285 }
1286
1287 if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE))
1288 rtl8187_conf_erp(priv, info->use_short_slot,
1289 info->use_short_preamble);
1290
1291 if (changed & BSS_CHANGED_BEACON_ENABLED)
1292 vif_priv->enable_beacon = info->enable_beacon;
1293
1294 if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
1295 cancel_delayed_work_sync(&vif_priv->beacon_work);
1296 if (vif_priv->enable_beacon)
1297 schedule_work(&vif_priv->beacon_work.work);
1298 }
1299
1300 }
1301
1302 static u64 rtl8187_prepare_multicast(struct ieee80211_hw *dev,
1303 struct netdev_hw_addr_list *mc_list)
1304 {
1305 return netdev_hw_addr_list_count(mc_list);
1306 }
1307
1308 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
1309 unsigned int changed_flags,
1310 unsigned int *total_flags,
1311 u64 multicast)
1312 {
1313 struct rtl8187_priv *priv = dev->priv;
1314
1315 if (changed_flags & FIF_FCSFAIL)
1316 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
1317 if (changed_flags & FIF_CONTROL)
1318 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
1319 if (*total_flags & FIF_OTHER_BSS ||
1320 *total_flags & FIF_ALLMULTI || multicast > 0)
1321 priv->rx_conf |= RTL818X_RX_CONF_MONITOR;
1322 else
1323 priv->rx_conf &= ~RTL818X_RX_CONF_MONITOR;
1324
1325 *total_flags = 0;
1326
1327 if (priv->rx_conf & RTL818X_RX_CONF_FCS)
1328 *total_flags |= FIF_FCSFAIL;
1329 if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
1330 *total_flags |= FIF_CONTROL;
1331 if (priv->rx_conf & RTL818X_RX_CONF_MONITOR) {
1332 *total_flags |= FIF_OTHER_BSS;
1333 *total_flags |= FIF_ALLMULTI;
1334 }
1335
1336 rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
1337 }
1338
1339 static int rtl8187_conf_tx(struct ieee80211_hw *dev,
1340 struct ieee80211_vif *vif, u16 queue,
1341 const struct ieee80211_tx_queue_params *params)
1342 {
1343 struct rtl8187_priv *priv = dev->priv;
1344 u8 cw_min, cw_max;
1345
1346 if (queue > 3)
1347 return -EINVAL;
1348
1349 cw_min = fls(params->cw_min);
1350 cw_max = fls(params->cw_max);
1351
1352 if (priv->is_rtl8187b) {
1353 priv->aifsn[queue] = params->aifs;
1354
1355 /*
1356 * This is the structure of AC_*_PARAM registers in 8187B:
1357 * - TXOP limit field, bit offset = 16
1358 * - ECWmax, bit offset = 12
1359 * - ECWmin, bit offset = 8
1360 * - AIFS, bit offset = 0
1361 */
1362 rtl818x_iowrite32(priv, rtl8187b_ac_addr[queue],
1363 (params->txop << 16) | (cw_max << 12) |
1364 (cw_min << 8) | (params->aifs *
1365 priv->slot_time + SIFS_TIME));
1366 } else {
1367 if (queue != 0)
1368 return -EINVAL;
1369
1370 rtl818x_iowrite8(priv, &priv->map->CW_VAL,
1371 cw_min | (cw_max << 4));
1372 }
1373 return 0;
1374 }
1375
1376
1377 static const struct ieee80211_ops rtl8187_ops = {
1378 .tx = rtl8187_tx,
1379 .start = rtl8187_start,
1380 .stop = rtl8187_stop,
1381 .add_interface = rtl8187_add_interface,
1382 .remove_interface = rtl8187_remove_interface,
1383 .config = rtl8187_config,
1384 .bss_info_changed = rtl8187_bss_info_changed,
1385 .prepare_multicast = rtl8187_prepare_multicast,
1386 .configure_filter = rtl8187_configure_filter,
1387 .conf_tx = rtl8187_conf_tx,
1388 .rfkill_poll = rtl8187_rfkill_poll,
1389 .get_tsf = rtl8187_get_tsf,
1390 };
1391
1392 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
1393 {
1394 struct ieee80211_hw *dev = eeprom->data;
1395 struct rtl8187_priv *priv = dev->priv;
1396 u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
1397
1398 eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
1399 eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
1400 eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
1401 eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
1402 }
1403
1404 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
1405 {
1406 struct ieee80211_hw *dev = eeprom->data;
1407 struct rtl8187_priv *priv = dev->priv;
1408 u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
1409
1410 if (eeprom->reg_data_in)
1411 reg |= RTL818X_EEPROM_CMD_WRITE;
1412 if (eeprom->reg_data_out)
1413 reg |= RTL818X_EEPROM_CMD_READ;
1414 if (eeprom->reg_data_clock)
1415 reg |= RTL818X_EEPROM_CMD_CK;
1416 if (eeprom->reg_chip_select)
1417 reg |= RTL818X_EEPROM_CMD_CS;
1418
1419 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
1420 udelay(10);
1421 }
1422
1423 static int rtl8187_probe(struct usb_interface *intf,
1424 const struct usb_device_id *id)
1425 {
1426 struct usb_device *udev = interface_to_usbdev(intf);
1427 struct ieee80211_hw *dev;
1428 struct rtl8187_priv *priv;
1429 struct eeprom_93cx6 eeprom;
1430 struct ieee80211_channel *channel;
1431 const char *chip_name;
1432 u16 txpwr, reg;
1433 u16 product_id = le16_to_cpu(udev->descriptor.idProduct);
1434 int err, i;
1435 u8 mac_addr[ETH_ALEN];
1436
1437 dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
1438 if (!dev) {
1439 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
1440 return -ENOMEM;
1441 }
1442
1443 priv = dev->priv;
1444 priv->is_rtl8187b = (id->driver_info == DEVICE_RTL8187B);
1445
1446 /* allocate "DMA aware" buffer for register accesses */
1447 priv->io_dmabuf = kmalloc(sizeof(*priv->io_dmabuf), GFP_KERNEL);
1448 if (!priv->io_dmabuf) {
1449 err = -ENOMEM;
1450 goto err_free_dev;
1451 }
1452 mutex_init(&priv->io_mutex);
1453
1454 SET_IEEE80211_DEV(dev, &intf->dev);
1455 usb_set_intfdata(intf, dev);
1456 priv->udev = udev;
1457
1458 usb_get_dev(udev);
1459
1460 skb_queue_head_init(&priv->rx_queue);
1461
1462 BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
1463 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));
1464
1465 memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
1466 memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
1467 priv->map = (struct rtl818x_csr *)0xFF00;
1468
1469 priv->band.band = NL80211_BAND_2GHZ;
1470 priv->band.channels = priv->channels;
1471 priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
1472 priv->band.bitrates = priv->rates;
1473 priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
1474 dev->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
1475
1476
1477 ieee80211_hw_set(dev, RX_INCLUDES_FCS);
1478 ieee80211_hw_set(dev, HOST_BROADCAST_PS_BUFFERING);
1479 ieee80211_hw_set(dev, SIGNAL_DBM);
1480 /* Initialize rate-control variables */
1481 dev->max_rates = 1;
1482 dev->max_rate_tries = RETRY_COUNT;
1483
1484 eeprom.data = dev;
1485 eeprom.register_read = rtl8187_eeprom_register_read;
1486 eeprom.register_write = rtl8187_eeprom_register_write;
1487 if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
1488 eeprom.width = PCI_EEPROM_WIDTH_93C66;
1489 else
1490 eeprom.width = PCI_EEPROM_WIDTH_93C46;
1491
1492 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
1493 udelay(10);
1494
1495 eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
1496 (__le16 __force *)mac_addr, 3);
1497 if (!is_valid_ether_addr(mac_addr)) {
1498 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
1499 "generated MAC address\n");
1500 eth_random_addr(mac_addr);
1501 }
1502 SET_IEEE80211_PERM_ADDR(dev, mac_addr);
1503
1504 channel = priv->channels;
1505 for (i = 0; i < 3; i++) {
1506 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
1507 &txpwr);
1508 (*channel++).hw_value = txpwr & 0xFF;
1509 (*channel++).hw_value = txpwr >> 8;
1510 }
1511 for (i = 0; i < 2; i++) {
1512 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
1513 &txpwr);
1514 (*channel++).hw_value = txpwr & 0xFF;
1515 (*channel++).hw_value = txpwr >> 8;
1516 }
1517
1518 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
1519 &priv->txpwr_base);
1520
1521 reg = rtl818x_ioread8(priv, &priv->map->PGSELECT) & ~1;
1522 rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
1523 /* 0 means asic B-cut, we should use SW 3 wire
1524 * bit-by-bit banging for radio. 1 means we can use
1525 * USB specific request to write radio registers */
1526 priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
1527 rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
1528 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
1529
1530 if (!priv->is_rtl8187b) {
1531 u32 reg32;
1532 reg32 = rtl818x_ioread32(priv, &priv->map->TX_CONF);
1533 reg32 &= RTL818X_TX_CONF_HWVER_MASK;
1534 switch (reg32) {
1535 case RTL818X_TX_CONF_R8187vD_B:
1536 /* Some RTL8187B devices have a USB ID of 0x8187
1537 * detect them here */
1538 chip_name = "RTL8187BvB(early)";
1539 priv->is_rtl8187b = 1;
1540 priv->hw_rev = RTL8187BvB;
1541 break;
1542 case RTL818X_TX_CONF_R8187vD:
1543 chip_name = "RTL8187vD";
1544 break;
1545 default:
1546 chip_name = "RTL8187vB (default)";
1547 }
1548 } else {
1549 /*
1550 * Force USB request to write radio registers for 8187B, Realtek
1551 * only uses it in their sources
1552 */
1553 /*if (priv->asic_rev == 0) {
1554 printk(KERN_WARNING "rtl8187: Forcing use of USB "
1555 "requests to write to radio registers\n");
1556 priv->asic_rev = 1;
1557 }*/
1558 switch (rtl818x_ioread8(priv, (u8 *)0xFFE1)) {
1559 case RTL818X_R8187B_B:
1560 chip_name = "RTL8187BvB";
1561 priv->hw_rev = RTL8187BvB;
1562 break;
1563 case RTL818X_R8187B_D:
1564 chip_name = "RTL8187BvD";
1565 priv->hw_rev = RTL8187BvD;
1566 break;
1567 case RTL818X_R8187B_E:
1568 chip_name = "RTL8187BvE";
1569 priv->hw_rev = RTL8187BvE;
1570 break;
1571 default:
1572 chip_name = "RTL8187BvB (default)";
1573 priv->hw_rev = RTL8187BvB;
1574 }
1575 }
1576
1577 if (!priv->is_rtl8187b) {
1578 for (i = 0; i < 2; i++) {
1579 eeprom_93cx6_read(&eeprom,
1580 RTL8187_EEPROM_TXPWR_CHAN_6 + i,
1581 &txpwr);
1582 (*channel++).hw_value = txpwr & 0xFF;
1583 (*channel++).hw_value = txpwr >> 8;
1584 }
1585 } else {
1586 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6,
1587 &txpwr);
1588 (*channel++).hw_value = txpwr & 0xFF;
1589
1590 eeprom_93cx6_read(&eeprom, 0x0A, &txpwr);
1591 (*channel++).hw_value = txpwr & 0xFF;
1592
1593 eeprom_93cx6_read(&eeprom, 0x1C, &txpwr);
1594 (*channel++).hw_value = txpwr & 0xFF;
1595 (*channel++).hw_value = txpwr >> 8;
1596 }
1597 /* Handle the differing rfkill GPIO bit in different models */
1598 priv->rfkill_mask = RFKILL_MASK_8187_89_97;
1599 if (product_id == 0x8197 || product_id == 0x8198) {
1600 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_SELECT_GPIO, &reg);
1601 if (reg & 0xFF00)
1602 priv->rfkill_mask = RFKILL_MASK_8198;
1603 }
1604 dev->vif_data_size = sizeof(struct rtl8187_vif);
1605 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1606 BIT(NL80211_IFTYPE_ADHOC) ;
1607
1608 wiphy_ext_feature_set(dev->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
1609
1610 if ((id->driver_info == DEVICE_RTL8187) && priv->is_rtl8187b)
1611 printk(KERN_INFO "rtl8187: inconsistency between id with OEM"
1612 " info!\n");
1613
1614 priv->rf = rtl8187_detect_rf(dev);
1615 dev->extra_tx_headroom = (!priv->is_rtl8187b) ?
1616 sizeof(struct rtl8187_tx_hdr) :
1617 sizeof(struct rtl8187b_tx_hdr);
1618 if (!priv->is_rtl8187b)
1619 dev->queues = 1;
1620 else
1621 dev->queues = 4;
1622
1623 err = ieee80211_register_hw(dev);
1624 if (err) {
1625 printk(KERN_ERR "rtl8187: Cannot register device\n");
1626 goto err_free_dmabuf;
1627 }
1628 mutex_init(&priv->conf_mutex);
1629 skb_queue_head_init(&priv->b_tx_status.queue);
1630
1631 wiphy_info(dev->wiphy, "hwaddr %pM, %s V%d + %s, rfkill mask %d\n",
1632 mac_addr, chip_name, priv->asic_rev, priv->rf->name,
1633 priv->rfkill_mask);
1634
1635 #ifdef CONFIG_RTL8187_LEDS
1636 eeprom_93cx6_read(&eeprom, 0x3F, &reg);
1637 reg &= 0xFF;
1638 rtl8187_leds_init(dev, reg);
1639 #endif
1640 rtl8187_rfkill_init(dev);
1641
1642 return 0;
1643
1644 err_free_dmabuf:
1645 kfree(priv->io_dmabuf);
1646 usb_set_intfdata(intf, NULL);
1647 usb_put_dev(udev);
1648 err_free_dev:
1649 ieee80211_free_hw(dev);
1650 return err;
1651 }
1652
1653 static void rtl8187_disconnect(struct usb_interface *intf)
1654 {
1655 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1656 struct rtl8187_priv *priv;
1657
1658 if (!dev)
1659 return;
1660
1661 #ifdef CONFIG_RTL8187_LEDS
1662 rtl8187_leds_exit(dev);
1663 #endif
1664 rtl8187_rfkill_exit(dev);
1665 ieee80211_unregister_hw(dev);
1666
1667 priv = dev->priv;
1668 usb_reset_device(priv->udev);
1669 usb_put_dev(interface_to_usbdev(intf));
1670 kfree(priv->io_dmabuf);
1671 ieee80211_free_hw(dev);
1672 }
1673
1674 static struct usb_driver rtl8187_driver = {
1675 .name = KBUILD_MODNAME,
1676 .id_table = rtl8187_table,
1677 .probe = rtl8187_probe,
1678 .disconnect = rtl8187_disconnect,
1679 .disable_hub_initiated_lpm = 1,
1680 };
1681
1682 module_usb_driver(rtl8187_driver);