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1/******************************************************************************
2 *
3 * Copyright(c) 2009-2011 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
25 *
26 *****************************************************************************/
27
28#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
29
30#include <linux/usb.h>
31#include "core.h"
32#include "wifi.h"
33#include "usb.h"
34#include "base.h"
35#include "ps.h"
36
37#define REALTEK_USB_VENQT_READ 0xC0
38#define REALTEK_USB_VENQT_WRITE 0x40
39#define REALTEK_USB_VENQT_CMD_REQ 0x05
40#define REALTEK_USB_VENQT_CMD_IDX 0x00
41
42#define REALTEK_USB_VENQT_MAX_BUF_SIZE 254
43
44static void usbctrl_async_callback(struct urb *urb)
45{
46 if (urb)
47 kfree(urb->context);
48}
49
50static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
51 u16 value, u16 index, void *pdata,
52 u16 len)
53{
54 int rc;
55 unsigned int pipe;
56 u8 reqtype;
57 struct usb_ctrlrequest *dr;
58 struct urb *urb;
59 struct rtl819x_async_write_data {
60 u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
61 struct usb_ctrlrequest dr;
62 } *buf;
63
64 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
65 reqtype = REALTEK_USB_VENQT_WRITE;
66
67 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
68 if (!buf)
69 return -ENOMEM;
70
71 urb = usb_alloc_urb(0, GFP_ATOMIC);
72 if (!urb) {
73 kfree(buf);
74 return -ENOMEM;
75 }
76
77 dr = &buf->dr;
78
79 dr->bRequestType = reqtype;
80 dr->bRequest = request;
81 dr->wValue = cpu_to_le16(value);
82 dr->wIndex = cpu_to_le16(index);
83 dr->wLength = cpu_to_le16(len);
84 memcpy(buf, pdata, len);
85 usb_fill_control_urb(urb, udev, pipe,
86 (unsigned char *)dr, buf, len,
87 usbctrl_async_callback, buf);
88 rc = usb_submit_urb(urb, GFP_ATOMIC);
89 if (rc < 0)
90 kfree(buf);
91 usb_free_urb(urb);
92 return rc;
93}
94
95static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
96 u16 value, u16 index, void *pdata,
97 u16 len)
98{
99 unsigned int pipe;
100 int status;
101 u8 reqtype;
102
103 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
104 reqtype = REALTEK_USB_VENQT_READ;
105
106 status = usb_control_msg(udev, pipe, request, reqtype, value, index,
107 pdata, len, 0); /* max. timeout */
108
109 if (status < 0)
110 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
111 value, status, *(u32 *)pdata);
112 return status;
113}
114
115static u32 _usb_read_sync(struct usb_device *udev, u32 addr, u16 len)
116{
117 u8 request;
118 u16 wvalue;
119 u16 index;
120 u32 *data;
121 u32 ret;
122
123 data = kmalloc(sizeof(u32), GFP_KERNEL);
124 if (!data)
125 return -ENOMEM;
126 request = REALTEK_USB_VENQT_CMD_REQ;
127 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
128
129 wvalue = (u16)addr;
130 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
131 ret = *data;
132 kfree(data);
133 return ret;
134}
135
136static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
137{
138 struct device *dev = rtlpriv->io.dev;
139
140 return (u8)_usb_read_sync(to_usb_device(dev), addr, 1);
141}
142
143static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
144{
145 struct device *dev = rtlpriv->io.dev;
146
147 return (u16)_usb_read_sync(to_usb_device(dev), addr, 2);
148}
149
150static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
151{
152 struct device *dev = rtlpriv->io.dev;
153
154 return _usb_read_sync(to_usb_device(dev), addr, 4);
155}
156
157static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
158 u16 len)
159{
160 u8 request;
161 u16 wvalue;
162 u16 index;
163 u32 data;
164
165 request = REALTEK_USB_VENQT_CMD_REQ;
166 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
167 wvalue = (u16)(addr&0x0000ffff);
168 data = val;
169 _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
170 len);
171}
172
173static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
174{
175 struct device *dev = rtlpriv->io.dev;
176
177 _usb_write_async(to_usb_device(dev), addr, val, 1);
178}
179
180static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
181{
182 struct device *dev = rtlpriv->io.dev;
183
184 _usb_write_async(to_usb_device(dev), addr, val, 2);
185}
186
187static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
188{
189 struct device *dev = rtlpriv->io.dev;
190
191 _usb_write_async(to_usb_device(dev), addr, val, 4);
192}
193
194static int _usb_nbytes_read_write(struct usb_device *udev, bool read, u32 addr,
195 u16 len, u8 *pdata)
196{
197 int status;
198 u8 request;
199 u16 wvalue;
200 u16 index;
201
202 request = REALTEK_USB_VENQT_CMD_REQ;
203 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
204 wvalue = (u16)addr;
205 if (read)
206 status = _usbctrl_vendorreq_sync_read(udev, request, wvalue,
207 index, pdata, len);
208 else
209 status = _usbctrl_vendorreq_async_write(udev, request, wvalue,
210 index, pdata, len);
211 return status;
212}
213
214static int _usb_readN_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len,
215 u8 *pdata)
216{
217 struct device *dev = rtlpriv->io.dev;
218
219 return _usb_nbytes_read_write(to_usb_device(dev), true, addr, len,
220 pdata);
221}
222
223static int _usb_writeN_async(struct rtl_priv *rtlpriv, u32 addr, u16 len,
224 u8 *pdata)
225{
226 struct device *dev = rtlpriv->io.dev;
227
228 return _usb_nbytes_read_write(to_usb_device(dev), false, addr, len,
229 pdata);
230}
231
232static void _rtl_usb_io_handler_init(struct device *dev,
233 struct ieee80211_hw *hw)
234{
235 struct rtl_priv *rtlpriv = rtl_priv(hw);
236
237 rtlpriv->io.dev = dev;
238 mutex_init(&rtlpriv->io.bb_mutex);
239 rtlpriv->io.write8_async = _usb_write8_async;
240 rtlpriv->io.write16_async = _usb_write16_async;
241 rtlpriv->io.write32_async = _usb_write32_async;
242 rtlpriv->io.writeN_async = _usb_writeN_async;
243 rtlpriv->io.read8_sync = _usb_read8_sync;
244 rtlpriv->io.read16_sync = _usb_read16_sync;
245 rtlpriv->io.read32_sync = _usb_read32_sync;
246 rtlpriv->io.readN_sync = _usb_readN_sync;
247}
248
249static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
250{
251 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
252
253 mutex_destroy(&rtlpriv->io.bb_mutex);
254}
255
256/**
257 *
258 * Default aggregation handler. Do nothing and just return the oldest skb.
259 */
260static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
261 struct sk_buff_head *list)
262{
263 return skb_dequeue(list);
264}
265
266#define IS_HIGH_SPEED_USB(udev) \
267 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
268
269static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
270{
271 u32 i;
272 struct rtl_priv *rtlpriv = rtl_priv(hw);
273 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
274
275 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
276 ? USB_HIGH_SPEED_BULK_SIZE
277 : USB_FULL_SPEED_BULK_SIZE;
278
279 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("USB Max Bulk-out Size=%d\n",
280 rtlusb->max_bulk_out_size));
281
282 for (i = 0; i < __RTL_TXQ_NUM; i++) {
283 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
284 if (!ep_num) {
285 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
286 ("Invalid endpoint map setting!\n"));
287 return -EINVAL;
288 }
289 }
290
291 rtlusb->usb_tx_post_hdl =
292 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
293 rtlusb->usb_tx_cleanup =
294 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
295 rtlusb->usb_tx_aggregate_hdl =
296 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
297 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
298 : &_none_usb_tx_aggregate_hdl;
299
300 init_usb_anchor(&rtlusb->tx_submitted);
301 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
302 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
303 init_usb_anchor(&rtlusb->tx_pending[i]);
304 }
305 return 0;
306}
307
308static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
309{
310 struct rtl_priv *rtlpriv = rtl_priv(hw);
311 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
312 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
313
314 rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
315 rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
316 rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
317 rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
318 rtlusb->usb_rx_segregate_hdl =
319 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
320
321 pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
322 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
323 init_usb_anchor(&rtlusb->rx_submitted);
324 return 0;
325}
326
327static int _rtl_usb_init(struct ieee80211_hw *hw)
328{
329 struct rtl_priv *rtlpriv = rtl_priv(hw);
330 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
331 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
332 int err;
333 u8 epidx;
334 struct usb_interface *usb_intf = rtlusb->intf;
335 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
336
337 rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
338 for (epidx = 0; epidx < epnums; epidx++) {
339 struct usb_endpoint_descriptor *pep_desc;
340 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
341
342 if (usb_endpoint_dir_in(pep_desc))
343 rtlusb->in_ep_nums++;
344 else if (usb_endpoint_dir_out(pep_desc))
345 rtlusb->out_ep_nums++;
346
347 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
348 ("USB EP(0x%02x), MaxPacketSize=%d ,Interval=%d.\n",
349 pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
350 pep_desc->bInterval));
351 }
352 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num)
353 return -EINVAL ;
354
355 /* usb endpoint mapping */
356 err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
357 rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
358 _rtl_usb_init_tx(hw);
359 _rtl_usb_init_rx(hw);
360 return err;
361}
362
363static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
364{
365 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
366 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
367 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
368 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
369
370 rtlhal->hw = hw;
371 ppsc->inactiveps = false;
372 ppsc->leisure_ps = false;
373 ppsc->fwctrl_lps = false;
374 ppsc->reg_fwctrl_lps = 3;
375 ppsc->reg_max_lps_awakeintvl = 5;
376 ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
377
378 /* IBSS */
379 mac->beacon_interval = 100;
380
381 /* AMPDU */
382 mac->min_space_cfg = 0;
383 mac->max_mss_density = 0;
384
385 /* set sane AMPDU defaults */
386 mac->current_ampdu_density = 7;
387 mac->current_ampdu_factor = 3;
388
389 /* QOS */
390 rtlusb->acm_method = eAcmWay2_SW;
391
392 /* IRQ */
393 /* HIMR - turn all on */
394 rtlusb->irq_mask[0] = 0xFFFFFFFF;
395 /* HIMR_EX - turn all on */
396 rtlusb->irq_mask[1] = 0xFFFFFFFF;
397 rtlusb->disableHWSM = true;
398 return 0;
399}
400
401#define __RADIO_TAP_SIZE_RSV 32
402
403static void _rtl_rx_completed(struct urb *urb);
404
405static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
406 struct rtl_usb *rtlusb,
407 struct urb *urb,
408 gfp_t gfp_mask)
409{
410 struct sk_buff *skb;
411 struct rtl_priv *rtlpriv = rtl_priv(hw);
412
413 skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
414 gfp_mask);
415 if (!skb) {
416 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
417 ("Failed to __dev_alloc_skb!!\n"))
418 return ERR_PTR(-ENOMEM);
419 }
420
421 /* reserve some space for mac80211's radiotap */
422 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
423 usb_fill_bulk_urb(urb, rtlusb->udev,
424 usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
425 skb->data, min(skb_tailroom(skb),
426 (int)rtlusb->rx_max_size),
427 _rtl_rx_completed, skb);
428
429 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
430 return skb;
431}
432
433#undef __RADIO_TAP_SIZE_RSV
434
435static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
436 struct sk_buff *skb)
437{
438 struct rtl_priv *rtlpriv = rtl_priv(hw);
439 u8 *rxdesc = skb->data;
440 struct ieee80211_hdr *hdr;
441 bool unicast = false;
442 __le16 fc;
443 struct ieee80211_rx_status rx_status = {0};
444 struct rtl_stats stats = {
445 .signal = 0,
446 .noise = -98,
447 .rate = 0,
448 };
449
450 skb_pull(skb, RTL_RX_DESC_SIZE);
451 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
452 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
453 hdr = (struct ieee80211_hdr *)(skb->data);
454 fc = hdr->frame_control;
455 if (!stats.crc) {
456 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
457
458 if (is_broadcast_ether_addr(hdr->addr1)) {
459 /*TODO*/;
460 } else if (is_multicast_ether_addr(hdr->addr1)) {
461 /*TODO*/
462 } else {
463 unicast = true;
464 rtlpriv->stats.rxbytesunicast += skb->len;
465 }
466
467 rtl_is_special_data(hw, skb, false);
468
469 if (ieee80211_is_data(fc)) {
470 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
471
472 if (unicast)
473 rtlpriv->link_info.num_rx_inperiod++;
474 }
475 }
476}
477
478static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
479 struct sk_buff *skb)
480{
481 struct rtl_priv *rtlpriv = rtl_priv(hw);
482 u8 *rxdesc = skb->data;
483 struct ieee80211_hdr *hdr;
484 bool unicast = false;
485 __le16 fc;
486 struct ieee80211_rx_status rx_status = {0};
487 struct rtl_stats stats = {
488 .signal = 0,
489 .noise = -98,
490 .rate = 0,
491 };
492
493 skb_pull(skb, RTL_RX_DESC_SIZE);
494 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
495 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
496 hdr = (struct ieee80211_hdr *)(skb->data);
497 fc = hdr->frame_control;
498 if (!stats.crc) {
499 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
500
501 if (is_broadcast_ether_addr(hdr->addr1)) {
502 /*TODO*/;
503 } else if (is_multicast_ether_addr(hdr->addr1)) {
504 /*TODO*/
505 } else {
506 unicast = true;
507 rtlpriv->stats.rxbytesunicast += skb->len;
508 }
509
510 rtl_is_special_data(hw, skb, false);
511
512 if (ieee80211_is_data(fc)) {
513 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
514
515 if (unicast)
516 rtlpriv->link_info.num_rx_inperiod++;
517 }
518 if (likely(rtl_action_proc(hw, skb, false))) {
519 struct sk_buff *uskb = NULL;
520 u8 *pdata;
521
522 uskb = dev_alloc_skb(skb->len + 128);
523 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
524 sizeof(rx_status));
525 pdata = (u8 *)skb_put(uskb, skb->len);
526 memcpy(pdata, skb->data, skb->len);
527 dev_kfree_skb_any(skb);
528 ieee80211_rx_irqsafe(hw, uskb);
529 } else {
530 dev_kfree_skb_any(skb);
531 }
532 }
533}
534
535static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
536{
537 struct sk_buff *_skb;
538 struct sk_buff_head rx_queue;
539 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
540
541 skb_queue_head_init(&rx_queue);
542 if (rtlusb->usb_rx_segregate_hdl)
543 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
544 WARN_ON(skb_queue_empty(&rx_queue));
545 while (!skb_queue_empty(&rx_queue)) {
546 _skb = skb_dequeue(&rx_queue);
547 _rtl_usb_rx_process_agg(hw, skb);
548 ieee80211_rx_irqsafe(hw, skb);
549 }
550}
551
552static void _rtl_rx_completed(struct urb *_urb)
553{
554 struct sk_buff *skb = (struct sk_buff *)_urb->context;
555 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
556 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
557 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
558 struct rtl_priv *rtlpriv = rtl_priv(hw);
559 int err = 0;
560
561 if (unlikely(IS_USB_STOP(rtlusb)))
562 goto free;
563
564 if (likely(0 == _urb->status)) {
565 /* If this code were moved to work queue, would CPU
566 * utilization be improved? NOTE: We shall allocate another skb
567 * and reuse the original one.
568 */
569 skb_put(skb, _urb->actual_length);
570
571 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
572 struct sk_buff *_skb;
573 _rtl_usb_rx_process_noagg(hw, skb);
574 _skb = _rtl_prep_rx_urb(hw, rtlusb, _urb, GFP_ATOMIC);
575 if (IS_ERR(_skb)) {
576 err = PTR_ERR(_skb);
577 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
578 ("Can't allocate skb for bulk IN!\n"));
579 return;
580 }
581 skb = _skb;
582 } else{
583 /* TO DO */
584 _rtl_rx_pre_process(hw, skb);
585 pr_err("rx agg not supported\n");
586 }
587 goto resubmit;
588 }
589
590 switch (_urb->status) {
591 /* disconnect */
592 case -ENOENT:
593 case -ECONNRESET:
594 case -ENODEV:
595 case -ESHUTDOWN:
596 goto free;
597 default:
598 break;
599 }
600
601resubmit:
602 skb_reset_tail_pointer(skb);
603 skb_trim(skb, 0);
604
605 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
606 err = usb_submit_urb(_urb, GFP_ATOMIC);
607 if (unlikely(err)) {
608 usb_unanchor_urb(_urb);
609 goto free;
610 }
611 return;
612
613free:
614 dev_kfree_skb_irq(skb);
615}
616
617static int _rtl_usb_receive(struct ieee80211_hw *hw)
618{
619 struct urb *urb;
620 struct sk_buff *skb;
621 int err;
622 int i;
623 struct rtl_priv *rtlpriv = rtl_priv(hw);
624 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
625
626 WARN_ON(0 == rtlusb->rx_urb_num);
627 /* 1600 == 1514 + max WLAN header + rtk info */
628 WARN_ON(rtlusb->rx_max_size < 1600);
629
630 for (i = 0; i < rtlusb->rx_urb_num; i++) {
631 err = -ENOMEM;
632 urb = usb_alloc_urb(0, GFP_KERNEL);
633 if (!urb) {
634 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
635 ("Failed to alloc URB!!\n"))
636 goto err_out;
637 }
638
639 skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
640 if (IS_ERR(skb)) {
641 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
642 ("Failed to prep_rx_urb!!\n"))
643 err = PTR_ERR(skb);
644 goto err_out;
645 }
646
647 usb_anchor_urb(urb, &rtlusb->rx_submitted);
648 err = usb_submit_urb(urb, GFP_KERNEL);
649 if (err)
650 goto err_out;
651 usb_free_urb(urb);
652 }
653 return 0;
654
655err_out:
656 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
657 return err;
658}
659
660static int rtl_usb_start(struct ieee80211_hw *hw)
661{
662 int err;
663 struct rtl_priv *rtlpriv = rtl_priv(hw);
664 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
665 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
666
667 err = rtlpriv->cfg->ops->hw_init(hw);
668 rtl_init_rx_config(hw);
669
670 /* Enable software */
671 SET_USB_START(rtlusb);
672 /* should after adapter start and interrupt enable. */
673 set_hal_start(rtlhal);
674
675 /* Start bulk IN */
676 _rtl_usb_receive(hw);
677
678 return err;
679}
680/**
681 *
682 *
683 */
684
685/*======================= tx =========================================*/
686static void rtl_usb_cleanup(struct ieee80211_hw *hw)
687{
688 u32 i;
689 struct sk_buff *_skb;
690 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
691 struct ieee80211_tx_info *txinfo;
692
693 SET_USB_STOP(rtlusb);
694
695 /* clean up rx stuff. */
696 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
697
698 /* clean up tx stuff */
699 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
700 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
701 rtlusb->usb_tx_cleanup(hw, _skb);
702 txinfo = IEEE80211_SKB_CB(_skb);
703 ieee80211_tx_info_clear_status(txinfo);
704 txinfo->flags |= IEEE80211_TX_STAT_ACK;
705 ieee80211_tx_status_irqsafe(hw, _skb);
706 }
707 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
708 }
709 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
710}
711
712/**
713 *
714 * We may add some struct into struct rtl_usb later. Do deinit here.
715 *
716 */
717static void rtl_usb_deinit(struct ieee80211_hw *hw)
718{
719 rtl_usb_cleanup(hw);
720}
721
722static void rtl_usb_stop(struct ieee80211_hw *hw)
723{
724 struct rtl_priv *rtlpriv = rtl_priv(hw);
725 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
726 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
727
728 /* should after adapter start and interrupt enable. */
729 set_hal_stop(rtlhal);
730 /* Enable software */
731 SET_USB_STOP(rtlusb);
732 rtl_usb_deinit(hw);
733 rtlpriv->cfg->ops->hw_disable(hw);
734}
735
736static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
737{
738 int err;
739 struct rtl_priv *rtlpriv = rtl_priv(hw);
740 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
741
742 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
743 err = usb_submit_urb(_urb, GFP_ATOMIC);
744 if (err < 0) {
745 struct sk_buff *skb;
746
747 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
748 ("Failed to submit urb.\n"));
749 usb_unanchor_urb(_urb);
750 skb = (struct sk_buff *)_urb->context;
751 kfree_skb(skb);
752 }
753 usb_free_urb(_urb);
754}
755
756static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
757 struct sk_buff *skb)
758{
759 struct rtl_priv *rtlpriv = rtl_priv(hw);
760 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
761 struct ieee80211_tx_info *txinfo;
762
763 rtlusb->usb_tx_post_hdl(hw, urb, skb);
764 skb_pull(skb, RTL_TX_HEADER_SIZE);
765 txinfo = IEEE80211_SKB_CB(skb);
766 ieee80211_tx_info_clear_status(txinfo);
767 txinfo->flags |= IEEE80211_TX_STAT_ACK;
768
769 if (urb->status) {
770 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
771 ("Urb has error status 0x%X\n", urb->status));
772 goto out;
773 }
774 /* TODO: statistics */
775out:
776 ieee80211_tx_status_irqsafe(hw, skb);
777 return urb->status;
778}
779
780static void _rtl_tx_complete(struct urb *urb)
781{
782 struct sk_buff *skb = (struct sk_buff *)urb->context;
783 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
784 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
785 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
786 int err;
787
788 if (unlikely(IS_USB_STOP(rtlusb)))
789 return;
790 err = _usb_tx_post(hw, urb, skb);
791 if (err) {
792 /* Ignore error and keep issuiing other urbs */
793 return;
794 }
795}
796
797static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
798 struct sk_buff *skb, u32 ep_num)
799{
800 struct rtl_priv *rtlpriv = rtl_priv(hw);
801 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
802 struct urb *_urb;
803
804 WARN_ON(NULL == skb);
805 _urb = usb_alloc_urb(0, GFP_ATOMIC);
806 if (!_urb) {
807 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
808 ("Can't allocate URB for bulk out!\n"));
809 kfree_skb(skb);
810 return NULL;
811 }
812 _rtl_install_trx_info(rtlusb, skb, ep_num);
813 usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
814 ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
815 _urb->transfer_flags |= URB_ZERO_PACKET;
816 return _urb;
817}
818
819static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
820 enum rtl_txq qnum)
821{
822 struct rtl_priv *rtlpriv = rtl_priv(hw);
823 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
824 u32 ep_num;
825 struct urb *_urb = NULL;
826 struct sk_buff *_skb = NULL;
827 struct sk_buff_head *skb_list;
828 struct usb_anchor *urb_list;
829
830 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
831 if (unlikely(IS_USB_STOP(rtlusb))) {
832 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
833 ("USB device is stopping...\n"));
834 kfree_skb(skb);
835 return;
836 }
837 ep_num = rtlusb->ep_map.ep_mapping[qnum];
838 skb_list = &rtlusb->tx_skb_queue[ep_num];
839 _skb = skb;
840 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
841 if (unlikely(!_urb)) {
842 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
843 ("Can't allocate urb. Drop skb!\n"));
844 return;
845 }
846 urb_list = &rtlusb->tx_pending[ep_num];
847 _rtl_submit_tx_urb(hw, _urb);
848}
849
850static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
851 u16 hw_queue)
852{
853 struct rtl_priv *rtlpriv = rtl_priv(hw);
854 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
855 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
856 struct rtl_tx_desc *pdesc = NULL;
857 struct rtl_tcb_desc tcb_desc;
858 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
859 __le16 fc = hdr->frame_control;
860 u8 *pda_addr = hdr->addr1;
861 /* ssn */
862 u8 *qc = NULL;
863 u8 tid = 0;
864 u16 seq_number = 0;
865
866 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
867 if (ieee80211_is_auth(fc)) {
868 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
869 rtl_ips_nic_on(hw);
870 }
871
872 if (rtlpriv->psc.sw_ps_enabled) {
873 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
874 !ieee80211_has_pm(fc))
875 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
876 }
877
878 rtl_action_proc(hw, skb, true);
879 if (is_multicast_ether_addr(pda_addr))
880 rtlpriv->stats.txbytesmulticast += skb->len;
881 else if (is_broadcast_ether_addr(pda_addr))
882 rtlpriv->stats.txbytesbroadcast += skb->len;
883 else
884 rtlpriv->stats.txbytesunicast += skb->len;
885 if (ieee80211_is_data_qos(fc)) {
886 qc = ieee80211_get_qos_ctl(hdr);
887 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
888 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
889 IEEE80211_SCTL_SEQ) >> 4;
890 seq_number += 1;
891 seq_number <<= 4;
892 }
893 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, skb,
894 hw_queue, &tcb_desc);
895 if (!ieee80211_has_morefrags(hdr->frame_control)) {
896 if (qc)
897 mac->tids[tid].seq_number = seq_number;
898 }
899 if (ieee80211_is_data(fc))
900 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
901}
902
903static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
904 struct rtl_tcb_desc *dummy)
905{
906 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
907 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
908 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
909 __le16 fc = hdr->frame_control;
910 u16 hw_queue;
911
912 if (unlikely(is_hal_stop(rtlhal)))
913 goto err_free;
914 hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
915 _rtl_usb_tx_preprocess(hw, skb, hw_queue);
916 _rtl_usb_transmit(hw, skb, hw_queue);
917 return NETDEV_TX_OK;
918
919err_free:
920 dev_kfree_skb_any(skb);
921 return NETDEV_TX_OK;
922}
923
924static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
925 struct sk_buff *skb)
926{
927 return false;
928}
929
930static struct rtl_intf_ops rtl_usb_ops = {
931 .adapter_start = rtl_usb_start,
932 .adapter_stop = rtl_usb_stop,
933 .adapter_tx = rtl_usb_tx,
934 .waitq_insert = rtl_usb_tx_chk_waitq_insert,
935};
936
937int __devinit rtl_usb_probe(struct usb_interface *intf,
938 const struct usb_device_id *id)
939{
940 int err;
941 struct ieee80211_hw *hw = NULL;
942 struct rtl_priv *rtlpriv = NULL;
943 struct usb_device *udev;
944 struct rtl_usb_priv *usb_priv;
945
946 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
947 sizeof(struct rtl_usb_priv), &rtl_ops);
948 if (!hw) {
949 RT_ASSERT(false, ("%s : ieee80211 alloc failed\n", __func__));
950 return -ENOMEM;
951 }
952 rtlpriv = hw->priv;
953 SET_IEEE80211_DEV(hw, &intf->dev);
954 udev = interface_to_usbdev(intf);
955 usb_get_dev(udev);
956 usb_priv = rtl_usbpriv(hw);
957 memset(usb_priv, 0, sizeof(*usb_priv));
958 usb_priv->dev.intf = intf;
959 usb_priv->dev.udev = udev;
960 usb_set_intfdata(intf, hw);
961 /* init cfg & intf_ops */
962 rtlpriv->rtlhal.interface = INTF_USB;
963 rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_info);
964 rtlpriv->intf_ops = &rtl_usb_ops;
965 rtl_dbgp_flag_init(hw);
966 /* Init IO handler */
967 _rtl_usb_io_handler_init(&udev->dev, hw);
968 rtlpriv->cfg->ops->read_chip_version(hw);
969 /*like read eeprom and so on */
970 rtlpriv->cfg->ops->read_eeprom_info(hw);
971 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
972 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
973 ("Can't init_sw_vars.\n"));
974 goto error_out;
975 }
976 rtlpriv->cfg->ops->init_sw_leds(hw);
977 err = _rtl_usb_init(hw);
978 err = _rtl_usb_init_sw(hw);
979 /* Init mac80211 sw */
980 err = rtl_init_core(hw);
981 if (err) {
982 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
983 ("Can't allocate sw for mac80211.\n"));
984 goto error_out;
985 }
986
987 /*init rfkill */
988 /* rtl_init_rfkill(hw); */
989
990 err = ieee80211_register_hw(hw);
991 if (err) {
992 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
993 ("Can't register mac80211 hw.\n"));
994 goto error_out;
995 } else {
996 rtlpriv->mac80211.mac80211_registered = 1;
997 }
998 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
999 return 0;
1000error_out:
1001 rtl_deinit_core(hw);
1002 _rtl_usb_io_handler_release(hw);
1003 ieee80211_free_hw(hw);
1004 usb_put_dev(udev);
1005 return -ENODEV;
1006}
1007EXPORT_SYMBOL(rtl_usb_probe);
1008
1009void rtl_usb_disconnect(struct usb_interface *intf)
1010{
1011 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1012 struct rtl_priv *rtlpriv = rtl_priv(hw);
1013 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1014 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1015
1016 if (unlikely(!rtlpriv))
1017 return;
1018 /*ieee80211_unregister_hw will call ops_stop */
1019 if (rtlmac->mac80211_registered == 1) {
1020 ieee80211_unregister_hw(hw);
1021 rtlmac->mac80211_registered = 0;
1022 } else {
1023 rtl_deinit_deferred_work(hw);
1024 rtlpriv->intf_ops->adapter_stop(hw);
1025 }
1026 /*deinit rfkill */
1027 /* rtl_deinit_rfkill(hw); */
1028 rtl_usb_deinit(hw);
1029 rtl_deinit_core(hw);
1030 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1031 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1032 _rtl_usb_io_handler_release(hw);
1033 usb_put_dev(rtlusb->udev);
1034 usb_set_intfdata(intf, NULL);
1035 ieee80211_free_hw(hw);
1036}
1037EXPORT_SYMBOL(rtl_usb_disconnect);
1038
1039int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1040{
1041 return 0;
1042}
1043EXPORT_SYMBOL(rtl_usb_suspend);
1044
1045int rtl_usb_resume(struct usb_interface *pusb_intf)
1046{
1047 return 0;
1048}
1049EXPORT_SYMBOL(rtl_usb_resume);
1/******************************************************************************
2 *
3 * Copyright(c) 2009-2012 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
25 *
26 *****************************************************************************/
27
28#include "wifi.h"
29#include "core.h"
30#include "usb.h"
31#include "base.h"
32#include "ps.h"
33#include "rtl8192c/fw_common.h"
34#include <linux/export.h>
35#include <linux/module.h>
36
37MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
38MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
39MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
40MODULE_LICENSE("GPL");
41MODULE_DESCRIPTION("USB basic driver for rtlwifi");
42
43#define REALTEK_USB_VENQT_READ 0xC0
44#define REALTEK_USB_VENQT_WRITE 0x40
45#define REALTEK_USB_VENQT_CMD_REQ 0x05
46#define REALTEK_USB_VENQT_CMD_IDX 0x00
47
48#define MAX_USBCTRL_VENDORREQ_TIMES 10
49
50static void usbctrl_async_callback(struct urb *urb)
51{
52 if (urb) {
53 /* free dr */
54 kfree(urb->setup_packet);
55 /* free databuf */
56 kfree(urb->transfer_buffer);
57 }
58}
59
60static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
61 u16 value, u16 index, void *pdata,
62 u16 len)
63{
64 int rc;
65 unsigned int pipe;
66 u8 reqtype;
67 struct usb_ctrlrequest *dr;
68 struct urb *urb;
69 const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
70 u8 *databuf;
71
72 if (WARN_ON_ONCE(len > databuf_maxlen))
73 len = databuf_maxlen;
74
75 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
76 reqtype = REALTEK_USB_VENQT_WRITE;
77
78 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
79 if (!dr)
80 return -ENOMEM;
81
82 databuf = kmalloc(databuf_maxlen, GFP_ATOMIC);
83 if (!databuf) {
84 kfree(dr);
85 return -ENOMEM;
86 }
87
88 urb = usb_alloc_urb(0, GFP_ATOMIC);
89 if (!urb) {
90 kfree(databuf);
91 kfree(dr);
92 return -ENOMEM;
93 }
94
95 dr->bRequestType = reqtype;
96 dr->bRequest = request;
97 dr->wValue = cpu_to_le16(value);
98 dr->wIndex = cpu_to_le16(index);
99 dr->wLength = cpu_to_le16(len);
100 /* data are already in little-endian order */
101 memcpy(databuf, pdata, len);
102 usb_fill_control_urb(urb, udev, pipe,
103 (unsigned char *)dr, databuf, len,
104 usbctrl_async_callback, NULL);
105 rc = usb_submit_urb(urb, GFP_ATOMIC);
106 if (rc < 0) {
107 kfree(databuf);
108 kfree(dr);
109 }
110 usb_free_urb(urb);
111 return rc;
112}
113
114static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
115 u16 value, u16 index, void *pdata,
116 u16 len)
117{
118 unsigned int pipe;
119 int status;
120 u8 reqtype;
121 int vendorreq_times = 0;
122 static int count;
123
124 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
125 reqtype = REALTEK_USB_VENQT_READ;
126
127 do {
128 status = usb_control_msg(udev, pipe, request, reqtype, value,
129 index, pdata, len, 0); /*max. timeout*/
130 if (status < 0) {
131 /* firmware download is checksumed, don't retry */
132 if ((value >= FW_8192C_START_ADDRESS &&
133 value <= FW_8192C_END_ADDRESS))
134 break;
135 } else {
136 break;
137 }
138 } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
139
140 if (status < 0 && count++ < 4)
141 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
142 value, status, *(u32 *)pdata);
143 return status;
144}
145
146static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
147{
148 struct device *dev = rtlpriv->io.dev;
149 struct usb_device *udev = to_usb_device(dev);
150 u8 request;
151 u16 wvalue;
152 u16 index;
153 __le32 *data;
154 unsigned long flags;
155
156 spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags);
157 if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT)
158 rtlpriv->usb_data_index = 0;
159 data = &rtlpriv->usb_data[rtlpriv->usb_data_index];
160 spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags);
161 request = REALTEK_USB_VENQT_CMD_REQ;
162 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
163
164 wvalue = (u16)addr;
165 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
166 return le32_to_cpu(*data);
167}
168
169static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
170{
171 return (u8)_usb_read_sync(rtlpriv, addr, 1);
172}
173
174static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
175{
176 return (u16)_usb_read_sync(rtlpriv, addr, 2);
177}
178
179static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
180{
181 return _usb_read_sync(rtlpriv, addr, 4);
182}
183
184static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
185 u16 len)
186{
187 u8 request;
188 u16 wvalue;
189 u16 index;
190 __le32 data;
191
192 request = REALTEK_USB_VENQT_CMD_REQ;
193 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
194 wvalue = (u16)(addr&0x0000ffff);
195 data = cpu_to_le32(val);
196 _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
197 len);
198}
199
200static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
201{
202 struct device *dev = rtlpriv->io.dev;
203
204 _usb_write_async(to_usb_device(dev), addr, val, 1);
205}
206
207static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
208{
209 struct device *dev = rtlpriv->io.dev;
210
211 _usb_write_async(to_usb_device(dev), addr, val, 2);
212}
213
214static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
215{
216 struct device *dev = rtlpriv->io.dev;
217
218 _usb_write_async(to_usb_device(dev), addr, val, 4);
219}
220
221static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
222 u16 len)
223{
224 struct device *dev = rtlpriv->io.dev;
225 struct usb_device *udev = to_usb_device(dev);
226 u8 request = REALTEK_USB_VENQT_CMD_REQ;
227 u8 reqtype = REALTEK_USB_VENQT_WRITE;
228 u16 wvalue;
229 u16 index = REALTEK_USB_VENQT_CMD_IDX;
230 int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
231 u8 *buffer;
232
233 wvalue = (u16)(addr & 0x0000ffff);
234 buffer = kmemdup(data, len, GFP_ATOMIC);
235 if (!buffer)
236 return;
237 usb_control_msg(udev, pipe, request, reqtype, wvalue,
238 index, buffer, len, 50);
239
240 kfree(buffer);
241}
242
243static void _rtl_usb_io_handler_init(struct device *dev,
244 struct ieee80211_hw *hw)
245{
246 struct rtl_priv *rtlpriv = rtl_priv(hw);
247
248 rtlpriv->io.dev = dev;
249 mutex_init(&rtlpriv->io.bb_mutex);
250 rtlpriv->io.write8_async = _usb_write8_async;
251 rtlpriv->io.write16_async = _usb_write16_async;
252 rtlpriv->io.write32_async = _usb_write32_async;
253 rtlpriv->io.read8_sync = _usb_read8_sync;
254 rtlpriv->io.read16_sync = _usb_read16_sync;
255 rtlpriv->io.read32_sync = _usb_read32_sync;
256 rtlpriv->io.writeN_sync = _usb_writeN_sync;
257}
258
259static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
260{
261 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
262
263 mutex_destroy(&rtlpriv->io.bb_mutex);
264}
265
266/**
267 *
268 * Default aggregation handler. Do nothing and just return the oldest skb.
269 */
270static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
271 struct sk_buff_head *list)
272{
273 return skb_dequeue(list);
274}
275
276#define IS_HIGH_SPEED_USB(udev) \
277 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
278
279static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
280{
281 u32 i;
282 struct rtl_priv *rtlpriv = rtl_priv(hw);
283 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
284
285 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
286 ? USB_HIGH_SPEED_BULK_SIZE
287 : USB_FULL_SPEED_BULK_SIZE;
288
289 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
290 rtlusb->max_bulk_out_size);
291
292 for (i = 0; i < __RTL_TXQ_NUM; i++) {
293 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
294 if (!ep_num) {
295 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
296 "Invalid endpoint map setting!\n");
297 return -EINVAL;
298 }
299 }
300
301 rtlusb->usb_tx_post_hdl =
302 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
303 rtlusb->usb_tx_cleanup =
304 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
305 rtlusb->usb_tx_aggregate_hdl =
306 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
307 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
308 : &_none_usb_tx_aggregate_hdl;
309
310 init_usb_anchor(&rtlusb->tx_submitted);
311 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
312 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
313 init_usb_anchor(&rtlusb->tx_pending[i]);
314 }
315 return 0;
316}
317
318static void _rtl_rx_work(unsigned long param);
319
320static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
321{
322 struct rtl_priv *rtlpriv = rtl_priv(hw);
323 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
324 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
325
326 rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
327 rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
328 rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
329 rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
330 rtlusb->usb_rx_segregate_hdl =
331 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
332
333 pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
334 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
335 init_usb_anchor(&rtlusb->rx_submitted);
336 init_usb_anchor(&rtlusb->rx_cleanup_urbs);
337
338 skb_queue_head_init(&rtlusb->rx_queue);
339 rtlusb->rx_work_tasklet.func = _rtl_rx_work;
340 rtlusb->rx_work_tasklet.data = (unsigned long)rtlusb;
341
342 return 0;
343}
344
345static int _rtl_usb_init(struct ieee80211_hw *hw)
346{
347 struct rtl_priv *rtlpriv = rtl_priv(hw);
348 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
349 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
350 int err;
351 u8 epidx;
352 struct usb_interface *usb_intf = rtlusb->intf;
353 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
354
355 rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
356 for (epidx = 0; epidx < epnums; epidx++) {
357 struct usb_endpoint_descriptor *pep_desc;
358 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
359
360 if (usb_endpoint_dir_in(pep_desc))
361 rtlusb->in_ep_nums++;
362 else if (usb_endpoint_dir_out(pep_desc))
363 rtlusb->out_ep_nums++;
364
365 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
366 "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
367 pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
368 pep_desc->bInterval);
369 }
370 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
371 pr_err("Too few input end points found\n");
372 return -EINVAL;
373 }
374 if (rtlusb->out_ep_nums == 0) {
375 pr_err("No output end points found\n");
376 return -EINVAL;
377 }
378 /* usb endpoint mapping */
379 err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
380 rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
381 _rtl_usb_init_tx(hw);
382 _rtl_usb_init_rx(hw);
383 return err;
384}
385
386static void rtl_usb_init_sw(struct ieee80211_hw *hw)
387{
388 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
389 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
390 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
391 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
392
393 rtlhal->hw = hw;
394 ppsc->inactiveps = false;
395 ppsc->leisure_ps = false;
396 ppsc->fwctrl_lps = false;
397 ppsc->reg_fwctrl_lps = 3;
398 ppsc->reg_max_lps_awakeintvl = 5;
399 ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
400
401 /* IBSS */
402 mac->beacon_interval = 100;
403
404 /* AMPDU */
405 mac->min_space_cfg = 0;
406 mac->max_mss_density = 0;
407
408 /* set sane AMPDU defaults */
409 mac->current_ampdu_density = 7;
410 mac->current_ampdu_factor = 3;
411
412 /* QOS */
413 rtlusb->acm_method = EACMWAY2_SW;
414
415 /* IRQ */
416 /* HIMR - turn all on */
417 rtlusb->irq_mask[0] = 0xFFFFFFFF;
418 /* HIMR_EX - turn all on */
419 rtlusb->irq_mask[1] = 0xFFFFFFFF;
420 rtlusb->disableHWSM = true;
421}
422
423static void _rtl_rx_completed(struct urb *urb);
424
425static int _rtl_prep_rx_urb(struct ieee80211_hw *hw, struct rtl_usb *rtlusb,
426 struct urb *urb, gfp_t gfp_mask)
427{
428 struct rtl_priv *rtlpriv = rtl_priv(hw);
429 void *buf;
430
431 buf = usb_alloc_coherent(rtlusb->udev, rtlusb->rx_max_size, gfp_mask,
432 &urb->transfer_dma);
433 if (!buf) {
434 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
435 "Failed to usb_alloc_coherent!!\n");
436 return -ENOMEM;
437 }
438
439 usb_fill_bulk_urb(urb, rtlusb->udev,
440 usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
441 buf, rtlusb->rx_max_size, _rtl_rx_completed, rtlusb);
442 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
443
444 return 0;
445}
446
447static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
448 struct sk_buff *skb)
449{
450 struct rtl_priv *rtlpriv = rtl_priv(hw);
451 u8 *rxdesc = skb->data;
452 struct ieee80211_hdr *hdr;
453 bool unicast = false;
454 __le16 fc;
455 struct ieee80211_rx_status rx_status = {0};
456 struct rtl_stats stats = {
457 .signal = 0,
458 .rate = 0,
459 };
460
461 skb_pull(skb, RTL_RX_DESC_SIZE);
462 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
463 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
464 hdr = (struct ieee80211_hdr *)(skb->data);
465 fc = hdr->frame_control;
466 if (!stats.crc) {
467 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
468
469 if (is_broadcast_ether_addr(hdr->addr1)) {
470 /*TODO*/;
471 } else if (is_multicast_ether_addr(hdr->addr1)) {
472 /*TODO*/
473 } else {
474 unicast = true;
475 rtlpriv->stats.rxbytesunicast += skb->len;
476 }
477
478 if (ieee80211_is_data(fc)) {
479 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
480
481 if (unicast)
482 rtlpriv->link_info.num_rx_inperiod++;
483 }
484 /* static bcn for roaming */
485 rtl_beacon_statistic(hw, skb);
486 }
487}
488
489static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
490 struct sk_buff *skb)
491{
492 struct rtl_priv *rtlpriv = rtl_priv(hw);
493 u8 *rxdesc = skb->data;
494 struct ieee80211_hdr *hdr;
495 bool unicast = false;
496 __le16 fc;
497 struct ieee80211_rx_status rx_status = {0};
498 struct rtl_stats stats = {
499 .signal = 0,
500 .rate = 0,
501 };
502
503 skb_pull(skb, RTL_RX_DESC_SIZE);
504 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
505 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
506 hdr = (struct ieee80211_hdr *)(skb->data);
507 fc = hdr->frame_control;
508 if (!stats.crc) {
509 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
510
511 if (is_broadcast_ether_addr(hdr->addr1)) {
512 /*TODO*/;
513 } else if (is_multicast_ether_addr(hdr->addr1)) {
514 /*TODO*/
515 } else {
516 unicast = true;
517 rtlpriv->stats.rxbytesunicast += skb->len;
518 }
519
520 if (ieee80211_is_data(fc)) {
521 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
522
523 if (unicast)
524 rtlpriv->link_info.num_rx_inperiod++;
525 }
526
527 /* static bcn for roaming */
528 rtl_beacon_statistic(hw, skb);
529
530 if (likely(rtl_action_proc(hw, skb, false)))
531 ieee80211_rx(hw, skb);
532 else
533 dev_kfree_skb_any(skb);
534 }
535}
536
537static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
538{
539 struct sk_buff *_skb;
540 struct sk_buff_head rx_queue;
541 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
542
543 skb_queue_head_init(&rx_queue);
544 if (rtlusb->usb_rx_segregate_hdl)
545 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
546 WARN_ON(skb_queue_empty(&rx_queue));
547 while (!skb_queue_empty(&rx_queue)) {
548 _skb = skb_dequeue(&rx_queue);
549 _rtl_usb_rx_process_agg(hw, _skb);
550 ieee80211_rx(hw, _skb);
551 }
552}
553
554#define __RX_SKB_MAX_QUEUED 64
555
556static void _rtl_rx_work(unsigned long param)
557{
558 struct rtl_usb *rtlusb = (struct rtl_usb *)param;
559 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
560 struct sk_buff *skb;
561
562 while ((skb = skb_dequeue(&rtlusb->rx_queue))) {
563 if (unlikely(IS_USB_STOP(rtlusb))) {
564 dev_kfree_skb_any(skb);
565 continue;
566 }
567
568 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
569 _rtl_usb_rx_process_noagg(hw, skb);
570 } else {
571 /* TO DO */
572 _rtl_rx_pre_process(hw, skb);
573 pr_err("rx agg not supported\n");
574 }
575 }
576}
577
578static unsigned int _rtl_rx_get_padding(struct ieee80211_hdr *hdr,
579 unsigned int len)
580{
581#if NET_IP_ALIGN != 0
582 unsigned int padding = 0;
583#endif
584
585 /* make function no-op when possible */
586 if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
587 return 0;
588
589#if NET_IP_ALIGN != 0
590 /* alignment calculation as in lbtf_rx() / carl9170_rx_copy_data() */
591 /* TODO: deduplicate common code, define helper function instead? */
592
593 if (ieee80211_is_data_qos(hdr->frame_control)) {
594 u8 *qc = ieee80211_get_qos_ctl(hdr);
595
596 padding ^= NET_IP_ALIGN;
597
598 /* Input might be invalid, avoid accessing memory outside
599 * the buffer.
600 */
601 if ((unsigned long)qc - (unsigned long)hdr < len &&
602 *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
603 padding ^= NET_IP_ALIGN;
604 }
605
606 if (ieee80211_has_a4(hdr->frame_control))
607 padding ^= NET_IP_ALIGN;
608
609 return padding;
610#endif
611}
612
613#define __RADIO_TAP_SIZE_RSV 32
614
615static void _rtl_rx_completed(struct urb *_urb)
616{
617 struct rtl_usb *rtlusb = (struct rtl_usb *)_urb->context;
618 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
619 struct rtl_priv *rtlpriv = rtl_priv(hw);
620 int err = 0;
621
622 if (unlikely(IS_USB_STOP(rtlusb)))
623 goto free;
624
625 if (likely(0 == _urb->status)) {
626 unsigned int padding;
627 struct sk_buff *skb;
628 unsigned int qlen;
629 unsigned int size = _urb->actual_length;
630 struct ieee80211_hdr *hdr;
631
632 if (size < RTL_RX_DESC_SIZE + sizeof(struct ieee80211_hdr)) {
633 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
634 "Too short packet from bulk IN! (len: %d)\n",
635 size);
636 goto resubmit;
637 }
638
639 qlen = skb_queue_len(&rtlusb->rx_queue);
640 if (qlen >= __RX_SKB_MAX_QUEUED) {
641 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
642 "Pending RX skbuff queue full! (qlen: %d)\n",
643 qlen);
644 goto resubmit;
645 }
646
647 hdr = (void *)(_urb->transfer_buffer + RTL_RX_DESC_SIZE);
648 padding = _rtl_rx_get_padding(hdr, size - RTL_RX_DESC_SIZE);
649
650 skb = dev_alloc_skb(size + __RADIO_TAP_SIZE_RSV + padding);
651 if (!skb) {
652 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
653 "Can't allocate skb for bulk IN!\n");
654 goto resubmit;
655 }
656
657 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
658
659 /* Make sure the payload data is 4 byte aligned. */
660 skb_reserve(skb, padding);
661
662 /* reserve some space for mac80211's radiotap */
663 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
664
665 memcpy(skb_put(skb, size), _urb->transfer_buffer, size);
666
667 skb_queue_tail(&rtlusb->rx_queue, skb);
668 tasklet_schedule(&rtlusb->rx_work_tasklet);
669
670 goto resubmit;
671 }
672
673 switch (_urb->status) {
674 /* disconnect */
675 case -ENOENT:
676 case -ECONNRESET:
677 case -ENODEV:
678 case -ESHUTDOWN:
679 goto free;
680 default:
681 break;
682 }
683
684resubmit:
685 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
686 err = usb_submit_urb(_urb, GFP_ATOMIC);
687 if (unlikely(err)) {
688 usb_unanchor_urb(_urb);
689 goto free;
690 }
691 return;
692
693free:
694 /* On some architectures, usb_free_coherent must not be called from
695 * hardirq context. Queue urb to cleanup list.
696 */
697 usb_anchor_urb(_urb, &rtlusb->rx_cleanup_urbs);
698}
699
700#undef __RADIO_TAP_SIZE_RSV
701
702static void _rtl_usb_cleanup_rx(struct ieee80211_hw *hw)
703{
704 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
705 struct urb *urb;
706
707 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
708
709 tasklet_kill(&rtlusb->rx_work_tasklet);
710 skb_queue_purge(&rtlusb->rx_queue);
711
712 while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
713 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
714 urb->transfer_buffer, urb->transfer_dma);
715 usb_free_urb(urb);
716 }
717}
718
719static int _rtl_usb_receive(struct ieee80211_hw *hw)
720{
721 struct urb *urb;
722 int err;
723 int i;
724 struct rtl_priv *rtlpriv = rtl_priv(hw);
725 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
726
727 WARN_ON(0 == rtlusb->rx_urb_num);
728 /* 1600 == 1514 + max WLAN header + rtk info */
729 WARN_ON(rtlusb->rx_max_size < 1600);
730
731 for (i = 0; i < rtlusb->rx_urb_num; i++) {
732 err = -ENOMEM;
733 urb = usb_alloc_urb(0, GFP_KERNEL);
734 if (!urb) {
735 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
736 "Failed to alloc URB!!\n");
737 goto err_out;
738 }
739
740 err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
741 if (err < 0) {
742 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
743 "Failed to prep_rx_urb!!\n");
744 usb_free_urb(urb);
745 goto err_out;
746 }
747
748 usb_anchor_urb(urb, &rtlusb->rx_submitted);
749 err = usb_submit_urb(urb, GFP_KERNEL);
750 if (err)
751 goto err_out;
752 usb_free_urb(urb);
753 }
754 return 0;
755
756err_out:
757 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
758 _rtl_usb_cleanup_rx(hw);
759 return err;
760}
761
762static int rtl_usb_start(struct ieee80211_hw *hw)
763{
764 int err;
765 struct rtl_priv *rtlpriv = rtl_priv(hw);
766 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
767 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
768
769 err = rtlpriv->cfg->ops->hw_init(hw);
770 if (!err) {
771 rtl_init_rx_config(hw);
772
773 /* Enable software */
774 SET_USB_START(rtlusb);
775 /* should after adapter start and interrupt enable. */
776 set_hal_start(rtlhal);
777
778 /* Start bulk IN */
779 err = _rtl_usb_receive(hw);
780 }
781
782 return err;
783}
784/**
785 *
786 *
787 */
788
789/*======================= tx =========================================*/
790static void rtl_usb_cleanup(struct ieee80211_hw *hw)
791{
792 u32 i;
793 struct sk_buff *_skb;
794 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
795 struct ieee80211_tx_info *txinfo;
796
797 SET_USB_STOP(rtlusb);
798
799 /* clean up rx stuff. */
800 _rtl_usb_cleanup_rx(hw);
801
802 /* clean up tx stuff */
803 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
804 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
805 rtlusb->usb_tx_cleanup(hw, _skb);
806 txinfo = IEEE80211_SKB_CB(_skb);
807 ieee80211_tx_info_clear_status(txinfo);
808 txinfo->flags |= IEEE80211_TX_STAT_ACK;
809 ieee80211_tx_status_irqsafe(hw, _skb);
810 }
811 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
812 }
813 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
814}
815
816/**
817 *
818 * We may add some struct into struct rtl_usb later. Do deinit here.
819 *
820 */
821static void rtl_usb_deinit(struct ieee80211_hw *hw)
822{
823 rtl_usb_cleanup(hw);
824}
825
826static void rtl_usb_stop(struct ieee80211_hw *hw)
827{
828 struct rtl_priv *rtlpriv = rtl_priv(hw);
829 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
830 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
831
832 /* should after adapter start and interrupt enable. */
833 set_hal_stop(rtlhal);
834 cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
835 /* Enable software */
836 SET_USB_STOP(rtlusb);
837 rtl_usb_deinit(hw);
838 rtlpriv->cfg->ops->hw_disable(hw);
839}
840
841static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
842{
843 int err;
844 struct rtl_priv *rtlpriv = rtl_priv(hw);
845 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
846
847 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
848 err = usb_submit_urb(_urb, GFP_ATOMIC);
849 if (err < 0) {
850 struct sk_buff *skb;
851
852 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
853 "Failed to submit urb\n");
854 usb_unanchor_urb(_urb);
855 skb = (struct sk_buff *)_urb->context;
856 kfree_skb(skb);
857 }
858 usb_free_urb(_urb);
859}
860
861static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
862 struct sk_buff *skb)
863{
864 struct rtl_priv *rtlpriv = rtl_priv(hw);
865 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
866 struct ieee80211_tx_info *txinfo;
867
868 rtlusb->usb_tx_post_hdl(hw, urb, skb);
869 skb_pull(skb, RTL_TX_HEADER_SIZE);
870 txinfo = IEEE80211_SKB_CB(skb);
871 ieee80211_tx_info_clear_status(txinfo);
872 txinfo->flags |= IEEE80211_TX_STAT_ACK;
873
874 if (urb->status) {
875 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
876 "Urb has error status 0x%X\n", urb->status);
877 goto out;
878 }
879 /* TODO: statistics */
880out:
881 ieee80211_tx_status_irqsafe(hw, skb);
882 return urb->status;
883}
884
885static void _rtl_tx_complete(struct urb *urb)
886{
887 struct sk_buff *skb = (struct sk_buff *)urb->context;
888 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
889 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
890 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
891 int err;
892
893 if (unlikely(IS_USB_STOP(rtlusb)))
894 return;
895 err = _usb_tx_post(hw, urb, skb);
896 if (err) {
897 /* Ignore error and keep issuiing other urbs */
898 return;
899 }
900}
901
902static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
903 struct sk_buff *skb, u32 ep_num)
904{
905 struct rtl_priv *rtlpriv = rtl_priv(hw);
906 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
907 struct urb *_urb;
908
909 WARN_ON(NULL == skb);
910 _urb = usb_alloc_urb(0, GFP_ATOMIC);
911 if (!_urb) {
912 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
913 "Can't allocate URB for bulk out!\n");
914 kfree_skb(skb);
915 return NULL;
916 }
917 _rtl_install_trx_info(rtlusb, skb, ep_num);
918 usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
919 ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
920 _urb->transfer_flags |= URB_ZERO_PACKET;
921 return _urb;
922}
923
924static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
925 enum rtl_txq qnum)
926{
927 struct rtl_priv *rtlpriv = rtl_priv(hw);
928 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
929 u32 ep_num;
930 struct urb *_urb = NULL;
931 struct sk_buff *_skb = NULL;
932
933 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
934 if (unlikely(IS_USB_STOP(rtlusb))) {
935 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
936 "USB device is stopping...\n");
937 kfree_skb(skb);
938 return;
939 }
940 ep_num = rtlusb->ep_map.ep_mapping[qnum];
941 _skb = skb;
942 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
943 if (unlikely(!_urb)) {
944 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
945 "Can't allocate urb. Drop skb!\n");
946 kfree_skb(skb);
947 return;
948 }
949 _rtl_submit_tx_urb(hw, _urb);
950}
951
952static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
953 struct ieee80211_sta *sta,
954 struct sk_buff *skb,
955 u16 hw_queue)
956{
957 struct rtl_priv *rtlpriv = rtl_priv(hw);
958 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
959 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
960 struct rtl_tx_desc *pdesc = NULL;
961 struct rtl_tcb_desc tcb_desc;
962 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
963 __le16 fc = hdr->frame_control;
964 u8 *pda_addr = hdr->addr1;
965 /* ssn */
966 u8 *qc = NULL;
967 u8 tid = 0;
968 u16 seq_number = 0;
969
970 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
971 if (ieee80211_is_auth(fc)) {
972 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
973 rtl_ips_nic_on(hw);
974 }
975
976 if (rtlpriv->psc.sw_ps_enabled) {
977 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
978 !ieee80211_has_pm(fc))
979 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
980 }
981
982 rtl_action_proc(hw, skb, true);
983 if (is_multicast_ether_addr(pda_addr))
984 rtlpriv->stats.txbytesmulticast += skb->len;
985 else if (is_broadcast_ether_addr(pda_addr))
986 rtlpriv->stats.txbytesbroadcast += skb->len;
987 else
988 rtlpriv->stats.txbytesunicast += skb->len;
989 if (ieee80211_is_data_qos(fc)) {
990 qc = ieee80211_get_qos_ctl(hdr);
991 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
992 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
993 IEEE80211_SCTL_SEQ) >> 4;
994 seq_number += 1;
995 seq_number <<= 4;
996 }
997 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
998 hw_queue, &tcb_desc);
999 if (!ieee80211_has_morefrags(hdr->frame_control)) {
1000 if (qc)
1001 mac->tids[tid].seq_number = seq_number;
1002 }
1003 if (ieee80211_is_data(fc))
1004 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
1005}
1006
1007static int rtl_usb_tx(struct ieee80211_hw *hw,
1008 struct ieee80211_sta *sta,
1009 struct sk_buff *skb,
1010 struct rtl_tcb_desc *dummy)
1011{
1012 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1013 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1014 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
1015 __le16 fc = hdr->frame_control;
1016 u16 hw_queue;
1017
1018 if (unlikely(is_hal_stop(rtlhal)))
1019 goto err_free;
1020 hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
1021 _rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
1022 _rtl_usb_transmit(hw, skb, hw_queue);
1023 return NETDEV_TX_OK;
1024
1025err_free:
1026 dev_kfree_skb_any(skb);
1027 return NETDEV_TX_OK;
1028}
1029
1030static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1031 struct ieee80211_sta *sta,
1032 struct sk_buff *skb)
1033{
1034 return false;
1035}
1036
1037static void rtl_fill_h2c_cmd_work_callback(struct work_struct *work)
1038{
1039 struct rtl_works *rtlworks =
1040 container_of(work, struct rtl_works, fill_h2c_cmd);
1041 struct ieee80211_hw *hw = rtlworks->hw;
1042 struct rtl_priv *rtlpriv = rtl_priv(hw);
1043
1044 rtlpriv->cfg->ops->fill_h2c_cmd(hw, H2C_RA_MASK, 5, rtlpriv->rate_mask);
1045}
1046
1047static struct rtl_intf_ops rtl_usb_ops = {
1048 .adapter_start = rtl_usb_start,
1049 .adapter_stop = rtl_usb_stop,
1050 .adapter_tx = rtl_usb_tx,
1051 .waitq_insert = rtl_usb_tx_chk_waitq_insert,
1052};
1053
1054int rtl_usb_probe(struct usb_interface *intf,
1055 const struct usb_device_id *id,
1056 struct rtl_hal_cfg *rtl_hal_cfg)
1057{
1058 int err;
1059 struct ieee80211_hw *hw = NULL;
1060 struct rtl_priv *rtlpriv = NULL;
1061 struct usb_device *udev;
1062 struct rtl_usb_priv *usb_priv;
1063
1064 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
1065 sizeof(struct rtl_usb_priv), &rtl_ops);
1066 if (!hw) {
1067 RT_ASSERT(false, "ieee80211 alloc failed\n");
1068 return -ENOMEM;
1069 }
1070 rtlpriv = hw->priv;
1071 rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
1072 GFP_KERNEL);
1073 if (!rtlpriv->usb_data)
1074 return -ENOMEM;
1075
1076 /* this spin lock must be initialized early */
1077 spin_lock_init(&rtlpriv->locks.usb_lock);
1078 INIT_WORK(&rtlpriv->works.fill_h2c_cmd,
1079 rtl_fill_h2c_cmd_work_callback);
1080 INIT_WORK(&rtlpriv->works.lps_change_work,
1081 rtl_lps_change_work_callback);
1082
1083 rtlpriv->usb_data_index = 0;
1084 init_completion(&rtlpriv->firmware_loading_complete);
1085 SET_IEEE80211_DEV(hw, &intf->dev);
1086 udev = interface_to_usbdev(intf);
1087 usb_get_dev(udev);
1088 usb_priv = rtl_usbpriv(hw);
1089 memset(usb_priv, 0, sizeof(*usb_priv));
1090 usb_priv->dev.intf = intf;
1091 usb_priv->dev.udev = udev;
1092 usb_set_intfdata(intf, hw);
1093 /* init cfg & intf_ops */
1094 rtlpriv->rtlhal.interface = INTF_USB;
1095 rtlpriv->cfg = rtl_hal_cfg;
1096 rtlpriv->intf_ops = &rtl_usb_ops;
1097 rtl_dbgp_flag_init(hw);
1098 /* Init IO handler */
1099 _rtl_usb_io_handler_init(&udev->dev, hw);
1100 rtlpriv->cfg->ops->read_chip_version(hw);
1101 /*like read eeprom and so on */
1102 rtlpriv->cfg->ops->read_eeprom_info(hw);
1103 err = _rtl_usb_init(hw);
1104 if (err)
1105 goto error_out;
1106 rtl_usb_init_sw(hw);
1107 /* Init mac80211 sw */
1108 err = rtl_init_core(hw);
1109 if (err) {
1110 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1111 "Can't allocate sw for mac80211\n");
1112 goto error_out;
1113 }
1114 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
1115 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
1116 goto error_out;
1117 }
1118 rtlpriv->cfg->ops->init_sw_leds(hw);
1119
1120 return 0;
1121error_out:
1122 rtl_deinit_core(hw);
1123 _rtl_usb_io_handler_release(hw);
1124 usb_put_dev(udev);
1125 complete(&rtlpriv->firmware_loading_complete);
1126 return -ENODEV;
1127}
1128EXPORT_SYMBOL(rtl_usb_probe);
1129
1130void rtl_usb_disconnect(struct usb_interface *intf)
1131{
1132 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1133 struct rtl_priv *rtlpriv = rtl_priv(hw);
1134 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1135 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1136
1137 if (unlikely(!rtlpriv))
1138 return;
1139
1140 /* just in case driver is removed before firmware callback */
1141 wait_for_completion(&rtlpriv->firmware_loading_complete);
1142 /*ieee80211_unregister_hw will call ops_stop */
1143 if (rtlmac->mac80211_registered == 1) {
1144 ieee80211_unregister_hw(hw);
1145 rtlmac->mac80211_registered = 0;
1146 } else {
1147 rtl_deinit_deferred_work(hw);
1148 rtlpriv->intf_ops->adapter_stop(hw);
1149 }
1150 /*deinit rfkill */
1151 /* rtl_deinit_rfkill(hw); */
1152 rtl_usb_deinit(hw);
1153 rtl_deinit_core(hw);
1154 kfree(rtlpriv->usb_data);
1155 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1156 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1157 _rtl_usb_io_handler_release(hw);
1158 usb_put_dev(rtlusb->udev);
1159 usb_set_intfdata(intf, NULL);
1160 ieee80211_free_hw(hw);
1161}
1162EXPORT_SYMBOL(rtl_usb_disconnect);
1163
1164int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1165{
1166 return 0;
1167}
1168EXPORT_SYMBOL(rtl_usb_suspend);
1169
1170int rtl_usb_resume(struct usb_interface *pusb_intf)
1171{
1172 return 0;
1173}
1174EXPORT_SYMBOL(rtl_usb_resume);