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Pull bugzilla-9429 into release branch
[pv_ops_mirror.git] / drivers / net / wireless / rtl8187_dev.c
blobe454ae83e97a369aceaf9fdfe0c7dbe2f38df8dc
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 * Magic delays and register offsets below are taken from the original
11 * r8187 driver sources. Thanks to Realtek for their support!
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
18 #include <linux/init.h>
19 #include <linux/usb.h>
20 #include <linux/delay.h>
21 #include <linux/etherdevice.h>
22 #include <linux/eeprom_93cx6.h>
23 #include <net/mac80211.h>
24
25 #include "rtl8187.h"
26 #include "rtl8187_rtl8225.h"
27
28 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
29 MODULE_AUTHOR("Andrea Merello <andreamrl@tiscali.it>");
30 MODULE_DESCRIPTION("RTL8187 USB wireless driver");
31 MODULE_LICENSE("GPL");
32
33 static struct usb_device_id rtl8187_table[] __devinitdata = {
34 /* Realtek */
35 {USB_DEVICE(0x0bda, 0x8187)},
36 /* Netgear */
37 {USB_DEVICE(0x0846, 0x6100)},
38 {USB_DEVICE(0x0846, 0x6a00)},
39 /* HP */
40 {USB_DEVICE(0x03f0, 0xca02)},
41 {}
42 };
43
44 MODULE_DEVICE_TABLE(usb, rtl8187_table);
45
46 static void rtl8187_iowrite_async_cb(struct urb *urb)
47 {
48 kfree(urb->context);
49 usb_free_urb(urb);
50 }
51
52 static void rtl8187_iowrite_async(struct rtl8187_priv *priv, __le16 addr,
53 void *data, u16 len)
54 {
55 struct usb_ctrlrequest *dr;
56 struct urb *urb;
57 struct rtl8187_async_write_data {
58 u8 data[4];
59 struct usb_ctrlrequest dr;
60 } *buf;
61
62 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
63 if (!buf)
64 return;
65
66 urb = usb_alloc_urb(0, GFP_ATOMIC);
67 if (!urb) {
68 kfree(buf);
69 return;
70 }
71
72 dr = &buf->dr;
73
74 dr->bRequestType = RTL8187_REQT_WRITE;
75 dr->bRequest = RTL8187_REQ_SET_REG;
76 dr->wValue = addr;
77 dr->wIndex = 0;
78 dr->wLength = cpu_to_le16(len);
79
80 memcpy(buf, data, len);
81
82 usb_fill_control_urb(urb, priv->udev, usb_sndctrlpipe(priv->udev, 0),
83 (unsigned char *)dr, buf, len,
84 rtl8187_iowrite_async_cb, buf);
85 usb_submit_urb(urb, GFP_ATOMIC);
86 }
87
88 static inline void rtl818x_iowrite32_async(struct rtl8187_priv *priv,
89 __le32 *addr, u32 val)
90 {
91 __le32 buf = cpu_to_le32(val);
92
93 rtl8187_iowrite_async(priv, cpu_to_le16((unsigned long)addr),
94 &buf, sizeof(buf));
95 }
96
97 void rtl8187_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
98 {
99 struct rtl8187_priv *priv = dev->priv;
100
101 data <<= 8;
102 data |= addr | 0x80;
103
104 rtl818x_iowrite8(priv, &priv->map->PHY[3], (data >> 24) & 0xFF);
105 rtl818x_iowrite8(priv, &priv->map->PHY[2], (data >> 16) & 0xFF);
106 rtl818x_iowrite8(priv, &priv->map->PHY[1], (data >> 8) & 0xFF);
107 rtl818x_iowrite8(priv, &priv->map->PHY[0], data & 0xFF);
108
109 msleep(1);
110 }
111
112 static void rtl8187_tx_cb(struct urb *urb)
113 {
114 struct ieee80211_tx_status status = { {0} };
115 struct sk_buff *skb = (struct sk_buff *)urb->context;
116 struct rtl8187_tx_info *info = (struct rtl8187_tx_info *)skb->cb;
117
118 usb_free_urb(info->urb);
119 if (info->control)
120 memcpy(&status.control, info->control, sizeof(status.control));
121 kfree(info->control);
122 skb_pull(skb, sizeof(struct rtl8187_tx_hdr));
123 status.flags |= IEEE80211_TX_STATUS_ACK;
124 ieee80211_tx_status_irqsafe(info->dev, skb, &status);
125 }
126
127 static int rtl8187_tx(struct ieee80211_hw *dev, struct sk_buff *skb,
128 struct ieee80211_tx_control *control)
129 {
130 struct rtl8187_priv *priv = dev->priv;
131 struct rtl8187_tx_hdr *hdr;
132 struct rtl8187_tx_info *info;
133 struct urb *urb;
134 __le16 rts_dur = 0;
135 u32 flags;
136
137 urb = usb_alloc_urb(0, GFP_ATOMIC);
138 if (!urb) {
139 kfree_skb(skb);
140 return 0;
141 }
142
143 flags = skb->len;
144 flags |= RTL8187_TX_FLAG_NO_ENCRYPT;
145 flags |= control->rts_cts_rate << 19;
146 flags |= control->tx_rate << 24;
147 if (ieee80211_get_morefrag((struct ieee80211_hdr *)skb->data))
148 flags |= RTL8187_TX_FLAG_MORE_FRAG;
149 if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) {
150 flags |= RTL8187_TX_FLAG_RTS;
151 rts_dur = ieee80211_rts_duration(dev, priv->if_id, skb->len, control);
152 }
153 if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
154 flags |= RTL8187_TX_FLAG_CTS;
155
156 hdr = (struct rtl8187_tx_hdr *)skb_push(skb, sizeof(*hdr));
157 hdr->flags = cpu_to_le32(flags);
158 hdr->len = 0;
159 hdr->rts_duration = rts_dur;
160 hdr->retry = cpu_to_le32(control->retry_limit << 8);
161
162 info = (struct rtl8187_tx_info *)skb->cb;
163 info->control = kmemdup(control, sizeof(*control), GFP_ATOMIC);
164 info->urb = urb;
165 info->dev = dev;
166 usb_fill_bulk_urb(urb, priv->udev, usb_sndbulkpipe(priv->udev, 2),
167 hdr, skb->len, rtl8187_tx_cb, skb);
168 usb_submit_urb(urb, GFP_ATOMIC);
169
170 return 0;
171 }
172
173 static void rtl8187_rx_cb(struct urb *urb)
174 {
175 struct sk_buff *skb = (struct sk_buff *)urb->context;
176 struct rtl8187_rx_info *info = (struct rtl8187_rx_info *)skb->cb;
177 struct ieee80211_hw *dev = info->dev;
178 struct rtl8187_priv *priv = dev->priv;
179 struct rtl8187_rx_hdr *hdr;
180 struct ieee80211_rx_status rx_status = { 0 };
181 int rate, signal;
182 u32 flags;
183
184 spin_lock(&priv->rx_queue.lock);
185 if (skb->next)
186 __skb_unlink(skb, &priv->rx_queue);
187 else {
188 spin_unlock(&priv->rx_queue.lock);
189 return;
190 }
191 spin_unlock(&priv->rx_queue.lock);
192
193 if (unlikely(urb->status)) {
194 usb_free_urb(urb);
195 dev_kfree_skb_irq(skb);
196 return;
197 }
198
199 skb_put(skb, urb->actual_length);
200 hdr = (struct rtl8187_rx_hdr *)(skb_tail_pointer(skb) - sizeof(*hdr));
201 flags = le32_to_cpu(hdr->flags);
202 skb_trim(skb, flags & 0x0FFF);
203
204 signal = hdr->agc >> 1;
205 rate = (flags >> 20) & 0xF;
206 if (rate > 3) { /* OFDM rate */
207 if (signal > 90)
208 signal = 90;
209 else if (signal < 25)
210 signal = 25;
211 signal = 90 - signal;
212 } else { /* CCK rate */
213 if (signal > 95)
214 signal = 95;
215 else if (signal < 30)
216 signal = 30;
217 signal = 95 - signal;
218 }
219
220 rx_status.antenna = (hdr->signal >> 7) & 1;
221 rx_status.signal = 64 - min(hdr->noise, (u8)64);
222 rx_status.ssi = signal;
223 rx_status.rate = rate;
224 rx_status.freq = dev->conf.freq;
225 rx_status.channel = dev->conf.channel;
226 rx_status.phymode = dev->conf.phymode;
227 rx_status.mactime = le64_to_cpu(hdr->mac_time);
228 if (flags & (1 << 13))
229 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
230 ieee80211_rx_irqsafe(dev, skb, &rx_status);
231
232 skb = dev_alloc_skb(RTL8187_MAX_RX);
233 if (unlikely(!skb)) {
234 usb_free_urb(urb);
235 /* TODO check rx queue length and refill *somewhere* */
236 return;
237 }
238
239 info = (struct rtl8187_rx_info *)skb->cb;
240 info->urb = urb;
241 info->dev = dev;
242 urb->transfer_buffer = skb_tail_pointer(skb);
243 urb->context = skb;
244 skb_queue_tail(&priv->rx_queue, skb);
245
246 usb_submit_urb(urb, GFP_ATOMIC);
247 }
248
249 static int rtl8187_init_urbs(struct ieee80211_hw *dev)
250 {
251 struct rtl8187_priv *priv = dev->priv;
252 struct urb *entry;
253 struct sk_buff *skb;
254 struct rtl8187_rx_info *info;
255
256 while (skb_queue_len(&priv->rx_queue) < 8) {
257 skb = __dev_alloc_skb(RTL8187_MAX_RX, GFP_KERNEL);
258 if (!skb)
259 break;
260 entry = usb_alloc_urb(0, GFP_KERNEL);
261 if (!entry) {
262 kfree_skb(skb);
263 break;
264 }
265 usb_fill_bulk_urb(entry, priv->udev,
266 usb_rcvbulkpipe(priv->udev, 1),
267 skb_tail_pointer(skb),
268 RTL8187_MAX_RX, rtl8187_rx_cb, skb);
269 info = (struct rtl8187_rx_info *)skb->cb;
270 info->urb = entry;
271 info->dev = dev;
272 skb_queue_tail(&priv->rx_queue, skb);
273 usb_submit_urb(entry, GFP_KERNEL);
274 }
275
276 return 0;
277 }
278
279 static int rtl8187_init_hw(struct ieee80211_hw *dev)
280 {
281 struct rtl8187_priv *priv = dev->priv;
282 u8 reg;
283 int i;
284
285 /* reset */
286 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
287 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
288 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
289 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
290 rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
291 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
292 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
293
294 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
295
296 msleep(200);
297 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x10);
298 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x11);
299 rtl818x_iowrite8(priv, (u8 *)0xFE18, 0x00);
300 msleep(200);
301
302 reg = rtl818x_ioread8(priv, &priv->map->CMD);
303 reg &= (1 << 1);
304 reg |= RTL818X_CMD_RESET;
305 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
306
307 i = 10;
308 do {
309 msleep(2);
310 if (!(rtl818x_ioread8(priv, &priv->map->CMD) &
311 RTL818X_CMD_RESET))
312 break;
313 } while (--i);
314
315 if (!i) {
316 printk(KERN_ERR "%s: Reset timeout!\n", wiphy_name(dev->wiphy));
317 return -ETIMEDOUT;
318 }
319
320 /* reload registers from eeprom */
321 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
322
323 i = 10;
324 do {
325 msleep(4);
326 if (!(rtl818x_ioread8(priv, &priv->map->EEPROM_CMD) &
327 RTL818X_EEPROM_CMD_CONFIG))
328 break;
329 } while (--i);
330
331 if (!i) {
332 printk(KERN_ERR "%s: eeprom reset timeout!\n",
333 wiphy_name(dev->wiphy));
334 return -ETIMEDOUT;
335 }
336
337 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
338 reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
339 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
340 rtl818x_iowrite32(priv, &priv->map->ANAPARAM, RTL8225_ANAPARAM_ON);
341 rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, RTL8225_ANAPARAM2_ON);
342 rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
343 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
344
345 /* setup card */
346 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
347 rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
348
349 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
350 rtl818x_iowrite8(priv, &priv->map->GPIO, 1);
351 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
352
353 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
354
355 rtl818x_iowrite16(priv, (__le16 *)0xFFF4, 0xFFFF);
356 reg = rtl818x_ioread8(priv, &priv->map->CONFIG1);
357 reg &= 0x3F;
358 reg |= 0x80;
359 rtl818x_iowrite8(priv, &priv->map->CONFIG1, reg);
360
361 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
362
363 rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);
364 rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
365 rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0x81);
366
367 // TODO: set RESP_RATE and BRSR properly
368 rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (8 << 4) | 0);
369 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
370
371 /* host_usb_init */
372 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0);
373 rtl818x_iowrite8(priv, &priv->map->GPIO, 0);
374 reg = rtl818x_ioread8(priv, (u8 *)0xFE53);
375 rtl818x_iowrite8(priv, (u8 *)0xFE53, reg | (1 << 7));
376 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, (4 << 8));
377 rtl818x_iowrite8(priv, &priv->map->GPIO, 0x20);
378 rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, 0);
379 rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x80);
380 rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x80);
381 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x80);
382 msleep(100);
383
384 rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x000a8008);
385 rtl818x_iowrite16(priv, &priv->map->BRSR, 0xFFFF);
386 rtl818x_iowrite32(priv, &priv->map->RF_PARA, 0x00100044);
387 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
388 rtl818x_iowrite8(priv, &priv->map->CONFIG3, 0x44);
389 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
390 rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1FF7);
391 msleep(100);
392
393 priv->rf_init(dev);
394
395 rtl818x_iowrite16(priv, &priv->map->BRSR, 0x01F3);
396 reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & 0xfffe;
397 rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 0x1);
398 rtl818x_iowrite16(priv, (__le16 *)0xFFFE, 0x10);
399 rtl818x_iowrite8(priv, &priv->map->TALLY_SEL, 0x80);
400 rtl818x_iowrite8(priv, (u8 *)0xFFFF, 0x60);
401 rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
402
403 return 0;
404 }
405
406 static void rtl8187_set_channel(struct ieee80211_hw *dev, int channel)
407 {
408 u32 reg;
409 struct rtl8187_priv *priv = dev->priv;
410
411 reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
412 /* Enable TX loopback on MAC level to avoid TX during channel
413 * changes, as this has be seen to causes problems and the
414 * card will stop work until next reset
415 */
416 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
417 reg | RTL818X_TX_CONF_LOOPBACK_MAC);
418 msleep(10);
419 rtl8225_rf_set_channel(dev, channel);
420 msleep(10);
421 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
422 }
423
424 static int rtl8187_start(struct ieee80211_hw *dev)
425 {
426 struct rtl8187_priv *priv = dev->priv;
427 u32 reg;
428 int ret;
429
430 ret = rtl8187_init_hw(dev);
431 if (ret)
432 return ret;
433
434 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
435
436 rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
437 rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
438
439 rtl8187_init_urbs(dev);
440
441 reg = RTL818X_RX_CONF_ONLYERLPKT |
442 RTL818X_RX_CONF_RX_AUTORESETPHY |
443 RTL818X_RX_CONF_BSSID |
444 RTL818X_RX_CONF_MGMT |
445 RTL818X_RX_CONF_DATA |
446 (7 << 13 /* RX FIFO threshold NONE */) |
447 (7 << 10 /* MAX RX DMA */) |
448 RTL818X_RX_CONF_BROADCAST |
449 RTL818X_RX_CONF_NICMAC;
450
451 priv->rx_conf = reg;
452 rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);
453
454 reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);
455 reg &= ~RTL818X_CW_CONF_PERPACKET_CW_SHIFT;
456 reg |= RTL818X_CW_CONF_PERPACKET_RETRY_SHIFT;
457 rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);
458
459 reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
460 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN_SHIFT;
461 reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL_SHIFT;
462 reg &= ~RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
463 rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
464
465 reg = RTL818X_TX_CONF_CW_MIN |
466 (7 << 21 /* MAX TX DMA */) |
467 RTL818X_TX_CONF_NO_ICV;
468 rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);
469
470 reg = rtl818x_ioread8(priv, &priv->map->CMD);
471 reg |= RTL818X_CMD_TX_ENABLE;
472 reg |= RTL818X_CMD_RX_ENABLE;
473 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
474
475 return 0;
476 }
477
478 static void rtl8187_stop(struct ieee80211_hw *dev)
479 {
480 struct rtl8187_priv *priv = dev->priv;
481 struct rtl8187_rx_info *info;
482 struct sk_buff *skb;
483 u32 reg;
484
485 rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
486
487 reg = rtl818x_ioread8(priv, &priv->map->CMD);
488 reg &= ~RTL818X_CMD_TX_ENABLE;
489 reg &= ~RTL818X_CMD_RX_ENABLE;
490 rtl818x_iowrite8(priv, &priv->map->CMD, reg);
491
492 rtl8225_rf_stop(dev);
493
494 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
495 reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
496 rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
497 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
498
499 while ((skb = skb_dequeue(&priv->rx_queue))) {
500 info = (struct rtl8187_rx_info *)skb->cb;
501 usb_kill_urb(info->urb);
502 kfree_skb(skb);
503 }
504 return;
505 }
506
507 static int rtl8187_add_interface(struct ieee80211_hw *dev,
508 struct ieee80211_if_init_conf *conf)
509 {
510 struct rtl8187_priv *priv = dev->priv;
511 int i;
512
513 if (priv->mode != IEEE80211_IF_TYPE_MNTR)
514 return -EOPNOTSUPP;
515
516 switch (conf->type) {
517 case IEEE80211_IF_TYPE_STA:
518 priv->mode = conf->type;
519 break;
520 default:
521 return -EOPNOTSUPP;
522 }
523
524 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
525 for (i = 0; i < ETH_ALEN; i++)
526 rtl818x_iowrite8(priv, &priv->map->MAC[i],
527 ((u8 *)conf->mac_addr)[i]);
528 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
529
530 return 0;
531 }
532
533 static void rtl8187_remove_interface(struct ieee80211_hw *dev,
534 struct ieee80211_if_init_conf *conf)
535 {
536 struct rtl8187_priv *priv = dev->priv;
537 priv->mode = IEEE80211_IF_TYPE_MNTR;
538 }
539
540 static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
541 {
542 struct rtl8187_priv *priv = dev->priv;
543 rtl8187_set_channel(dev, conf->channel);
544
545 rtl818x_iowrite8(priv, &priv->map->SIFS, 0x22);
546
547 if (conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
548 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x9);
549 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x14);
550 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x14);
551 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0x73);
552 } else {
553 rtl818x_iowrite8(priv, &priv->map->SLOT, 0x14);
554 rtl818x_iowrite8(priv, &priv->map->DIFS, 0x24);
555 rtl818x_iowrite8(priv, &priv->map->EIFS, 91 - 0x24);
556 rtl818x_iowrite8(priv, &priv->map->CW_VAL, 0xa5);
557 }
558
559 rtl818x_iowrite16(priv, &priv->map->ATIM_WND, 2);
560 rtl818x_iowrite16(priv, &priv->map->ATIMTR_INTERVAL, 100);
561 rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL, 100);
562 rtl818x_iowrite16(priv, &priv->map->BEACON_INTERVAL_TIME, 100);
563 return 0;
564 }
565
566 static int rtl8187_config_interface(struct ieee80211_hw *dev, int if_id,
567 struct ieee80211_if_conf *conf)
568 {
569 struct rtl8187_priv *priv = dev->priv;
570 int i;
571
572 priv->if_id = if_id;
573
574 for (i = 0; i < ETH_ALEN; i++)
575 rtl818x_iowrite8(priv, &priv->map->BSSID[i], conf->bssid[i]);
576
577 if (is_valid_ether_addr(conf->bssid))
578 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_INFRA);
579 else
580 rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_NO_LINK);
581
582 return 0;
583 }
584
585 static void rtl8187_configure_filter(struct ieee80211_hw *dev,
586 unsigned int changed_flags,
587 unsigned int *total_flags,
588 int mc_count, struct dev_addr_list *mclist)
589 {
590 struct rtl8187_priv *priv = dev->priv;
591
592 if (changed_flags & FIF_FCSFAIL)
593 priv->rx_conf ^= RTL818X_RX_CONF_FCS;
594 if (changed_flags & FIF_CONTROL)
595 priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
596 if (changed_flags & FIF_OTHER_BSS)
597 priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
598 if (*total_flags & FIF_ALLMULTI || mc_count > 0)
599 priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
600 else
601 priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;
602
603 *total_flags = 0;
604
605 if (priv->rx_conf & RTL818X_RX_CONF_FCS)
606 *total_flags |= FIF_FCSFAIL;
607 if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
608 *total_flags |= FIF_CONTROL;
609 if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
610 *total_flags |= FIF_OTHER_BSS;
611 if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
612 *total_flags |= FIF_ALLMULTI;
613
614 rtl818x_iowrite32_async(priv, &priv->map->RX_CONF, priv->rx_conf);
615 }
616
617 static const struct ieee80211_ops rtl8187_ops = {
618 .tx = rtl8187_tx,
619 .start = rtl8187_start,
620 .stop = rtl8187_stop,
621 .add_interface = rtl8187_add_interface,
622 .remove_interface = rtl8187_remove_interface,
623 .config = rtl8187_config,
624 .config_interface = rtl8187_config_interface,
625 .configure_filter = rtl8187_configure_filter,
626 };
627
628 static void rtl8187_eeprom_register_read(struct eeprom_93cx6 *eeprom)
629 {
630 struct ieee80211_hw *dev = eeprom->data;
631 struct rtl8187_priv *priv = dev->priv;
632 u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
633
634 eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
635 eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
636 eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
637 eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
638 }
639
640 static void rtl8187_eeprom_register_write(struct eeprom_93cx6 *eeprom)
641 {
642 struct ieee80211_hw *dev = eeprom->data;
643 struct rtl8187_priv *priv = dev->priv;
644 u8 reg = RTL818X_EEPROM_CMD_PROGRAM;
645
646 if (eeprom->reg_data_in)
647 reg |= RTL818X_EEPROM_CMD_WRITE;
648 if (eeprom->reg_data_out)
649 reg |= RTL818X_EEPROM_CMD_READ;
650 if (eeprom->reg_data_clock)
651 reg |= RTL818X_EEPROM_CMD_CK;
652 if (eeprom->reg_chip_select)
653 reg |= RTL818X_EEPROM_CMD_CS;
654
655 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
656 udelay(10);
657 }
658
659 static int __devinit rtl8187_probe(struct usb_interface *intf,
660 const struct usb_device_id *id)
661 {
662 struct usb_device *udev = interface_to_usbdev(intf);
663 struct ieee80211_hw *dev;
664 struct rtl8187_priv *priv;
665 struct eeprom_93cx6 eeprom;
666 struct ieee80211_channel *channel;
667 u16 txpwr, reg;
668 int err, i;
669 DECLARE_MAC_BUF(mac);
670
671 dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8187_ops);
672 if (!dev) {
673 printk(KERN_ERR "rtl8187: ieee80211 alloc failed\n");
674 return -ENOMEM;
675 }
676
677 priv = dev->priv;
678
679 SET_IEEE80211_DEV(dev, &intf->dev);
680 usb_set_intfdata(intf, dev);
681 priv->udev = udev;
682
683 usb_get_dev(udev);
684
685 skb_queue_head_init(&priv->rx_queue);
686 memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
687 memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));
688 priv->map = (struct rtl818x_csr *)0xFF00;
689 priv->modes[0].mode = MODE_IEEE80211G;
690 priv->modes[0].num_rates = ARRAY_SIZE(rtl818x_rates);
691 priv->modes[0].rates = priv->rates;
692 priv->modes[0].num_channels = ARRAY_SIZE(rtl818x_channels);
693 priv->modes[0].channels = priv->channels;
694 priv->modes[1].mode = MODE_IEEE80211B;
695 priv->modes[1].num_rates = 4;
696 priv->modes[1].rates = priv->rates;
697 priv->modes[1].num_channels = ARRAY_SIZE(rtl818x_channels);
698 priv->modes[1].channels = priv->channels;
699 priv->mode = IEEE80211_IF_TYPE_MNTR;
700 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
701 IEEE80211_HW_RX_INCLUDES_FCS;
702 dev->extra_tx_headroom = sizeof(struct rtl8187_tx_hdr);
703 dev->queues = 1;
704 dev->max_rssi = 65;
705 dev->max_signal = 64;
706
707 for (i = 0; i < 2; i++)
708 if ((err = ieee80211_register_hwmode(dev, &priv->modes[i])))
709 goto err_free_dev;
710
711 eeprom.data = dev;
712 eeprom.register_read = rtl8187_eeprom_register_read;
713 eeprom.register_write = rtl8187_eeprom_register_write;
714 if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
715 eeprom.width = PCI_EEPROM_WIDTH_93C66;
716 else
717 eeprom.width = PCI_EEPROM_WIDTH_93C46;
718
719 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
720 udelay(10);
721
722 eeprom_93cx6_multiread(&eeprom, RTL8187_EEPROM_MAC_ADDR,
723 (__le16 __force *)dev->wiphy->perm_addr, 3);
724 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
725 printk(KERN_WARNING "rtl8187: Invalid hwaddr! Using randomly "
726 "generated MAC address\n");
727 random_ether_addr(dev->wiphy->perm_addr);
728 }
729
730 channel = priv->channels;
731 for (i = 0; i < 3; i++) {
732 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_1 + i,
733 &txpwr);
734 (*channel++).val = txpwr & 0xFF;
735 (*channel++).val = txpwr >> 8;
736 }
737 for (i = 0; i < 2; i++) {
738 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_4 + i,
739 &txpwr);
740 (*channel++).val = txpwr & 0xFF;
741 (*channel++).val = txpwr >> 8;
742 }
743 for (i = 0; i < 2; i++) {
744 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_CHAN_6 + i,
745 &txpwr);
746 (*channel++).val = txpwr & 0xFF;
747 (*channel++).val = txpwr >> 8;
748 }
749
750 eeprom_93cx6_read(&eeprom, RTL8187_EEPROM_TXPWR_BASE,
751 &priv->txpwr_base);
752
753 reg = rtl818x_ioread16(priv, &priv->map->PGSELECT) & ~1;
754 rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg | 1);
755 /* 0 means asic B-cut, we should use SW 3 wire
756 * bit-by-bit banging for radio. 1 means we can use
757 * USB specific request to write radio registers */
758 priv->asic_rev = rtl818x_ioread8(priv, (u8 *)0xFFFE) & 0x3;
759 rtl818x_iowrite16(priv, &priv->map->PGSELECT, reg);
760 rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
761
762 rtl8225_write(dev, 0, 0x1B7);
763
764 if (rtl8225_read(dev, 8) != 0x588 || rtl8225_read(dev, 9) != 0x700)
765 priv->rf_init = rtl8225_rf_init;
766 else
767 priv->rf_init = rtl8225z2_rf_init;
768
769 rtl8225_write(dev, 0, 0x0B7);
770
771 err = ieee80211_register_hw(dev);
772 if (err) {
773 printk(KERN_ERR "rtl8187: Cannot register device\n");
774 goto err_free_dev;
775 }
776
777 printk(KERN_INFO "%s: hwaddr %s, rtl8187 V%d + %s\n",
778 wiphy_name(dev->wiphy), print_mac(mac, dev->wiphy->perm_addr),
779 priv->asic_rev, priv->rf_init == rtl8225_rf_init ?
780 "rtl8225" : "rtl8225z2");
781
782 return 0;
783
784 err_free_dev:
785 ieee80211_free_hw(dev);
786 usb_set_intfdata(intf, NULL);
787 usb_put_dev(udev);
788 return err;
789 }
790
791 static void __devexit rtl8187_disconnect(struct usb_interface *intf)
792 {
793 struct ieee80211_hw *dev = usb_get_intfdata(intf);
794 struct rtl8187_priv *priv;
795
796 if (!dev)
797 return;
798
799 ieee80211_unregister_hw(dev);
800
801 priv = dev->priv;
802 usb_put_dev(interface_to_usbdev(intf));
803 ieee80211_free_hw(dev);
804 }
805
806 static struct usb_driver rtl8187_driver = {
807 .name = KBUILD_MODNAME,
808 .id_table = rtl8187_table,
809 .probe = rtl8187_probe,
810 .disconnect = rtl8187_disconnect,
811 };
812
813 static int __init rtl8187_init(void)
814 {
815 return usb_register(&rtl8187_driver);
816 }
817
818 static void __exit rtl8187_exit(void)
819 {
820 usb_deregister(&rtl8187_driver);
821 }
822
823 module_init(rtl8187_init);
824 module_exit(rtl8187_exit);
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