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rtlwifi: Move pr_fmt macros to a single location
[deliverable/linux.git] / drivers / net / wireless / rtlwifi / usb.c
CommitLineData
2ca20f79
G		 1/******************************************************************************
2 *
a8d76066 3 * Copyright(c) 2009-2012 Realtek Corporation. All rights reserved.
2ca20f79
G		 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 *****************************************************************************/
292b1192 27
2ca20f79 28#include "wifi.h"
d273bb20 29#include "core.h"
2ca20f79
G		 30#include "usb.h"
31#include "base.h"
32#include "ps.h"
040a7278 33#include "rtl8192c/fw_common.h"
d273bb20 34#include <linux/export.h>
2ca20f79
G		 35
36#define REALTEK_USB_VENQT_READ 0xC0
37#define REALTEK_USB_VENQT_WRITE 0x40
38#define REALTEK_USB_VENQT_CMD_REQ 0x05
39#define REALTEK_USB_VENQT_CMD_IDX 0x00
40
040a7278 41#define MAX_USBCTRL_VENDORREQ_TIMES 10
2ca20f79
G		 42
43static void usbctrl_async_callback(struct urb *urb)
44{
45 if (urb)
46 kfree(urb->context);
47}
48
49static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
50 u16 value, u16 index, void *pdata,
51 u16 len)
52{
53 int rc;
54 unsigned int pipe;
55 u8 reqtype;
56 struct usb_ctrlrequest *dr;
57 struct urb *urb;
58 struct rtl819x_async_write_data {
59 u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
60 struct usb_ctrlrequest dr;
61 } *buf;
62
63 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
64 reqtype = REALTEK_USB_VENQT_WRITE;
65
66 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
67 if (!buf)
68 return -ENOMEM;
69
70 urb = usb_alloc_urb(0, GFP_ATOMIC);
71 if (!urb) {
72 kfree(buf);
73 return -ENOMEM;
74 }
75
76 dr = &buf->dr;
77
78 dr->bRequestType = reqtype;
79 dr->bRequest = request;
80 dr->wValue = cpu_to_le16(value);
81 dr->wIndex = cpu_to_le16(index);
82 dr->wLength = cpu_to_le16(len);
abfabc9b 83 /* data are already in little-endian order */
2ca20f79
G		 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;
040a7278 102 int vendorreq_times = 0;
abfabc9b 103 static int count;
2ca20f79
G		 104
105 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
106 reqtype = REALTEK_USB_VENQT_READ;
107
eb1852b1 108 do {
040a7278
G		 109 status = usb_control_msg(udev, pipe, request, reqtype, value,
110 index, pdata, len, 0); /*max. timeout*/
111 if (status < 0) {
112 /* firmware download is checksumed, don't retry */
113 if ((value >= FW_8192C_START_ADDRESS &&
114 value <= FW_8192C_END_ADDRESS))
115 break;
116 } else {
117 break;
118 }
eb1852b1
JL		 119 } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
120
abfabc9b 121 if (status < 0 && count++ < 4)
292b1192 122 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
abfabc9b 123 value, status, le32_to_cpu(*(u32 *)pdata));
2ca20f79
G		 124 return status;
125}
126
127static u32 _usb_read_sync(struct usb_device *udev, u32 addr, u16 len)
128{
129 u8 request;
130 u16 wvalue;
131 u16 index;
132 u32 *data;
133 u32 ret;
134
135 data = kmalloc(sizeof(u32), GFP_KERNEL);
136 if (!data)
137 return -ENOMEM;
138 request = REALTEK_USB_VENQT_CMD_REQ;
139 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
140
141 wvalue = (u16)addr;
142 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
abfabc9b 143 ret = le32_to_cpu(*data);
2ca20f79
G		 144 kfree(data);
145 return ret;
146}
147
148static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
149{
150 struct device *dev = rtlpriv->io.dev;
151
152 return (u8)_usb_read_sync(to_usb_device(dev), addr, 1);
153}
154
155static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
156{
157 struct device *dev = rtlpriv->io.dev;
158
159 return (u16)_usb_read_sync(to_usb_device(dev), addr, 2);
160}
161
162static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
163{
164 struct device *dev = rtlpriv->io.dev;
165
166 return _usb_read_sync(to_usb_device(dev), addr, 4);
167}
168
169static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
170 u16 len)
171{
172 u8 request;
173 u16 wvalue;
174 u16 index;
abfabc9b 175 __le32 data;
2ca20f79
G		 176
177 request = REALTEK_USB_VENQT_CMD_REQ;
178 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
179 wvalue = (u16)(addr&0x0000ffff);
abfabc9b 180 data = cpu_to_le32(val);
2ca20f79
G		 181 _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
182 len);
183}
184
185static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
186{
187 struct device *dev = rtlpriv->io.dev;
188
189 _usb_write_async(to_usb_device(dev), addr, val, 1);
190}
191
192static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
193{
194 struct device *dev = rtlpriv->io.dev;
195
196 _usb_write_async(to_usb_device(dev), addr, val, 2);
197}
198
199static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
200{
201 struct device *dev = rtlpriv->io.dev;
202
203 _usb_write_async(to_usb_device(dev), addr, val, 4);
204}
205
ff6ff96b
LF		 206static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
207 u16 len)
208{
209 struct device *dev = rtlpriv->io.dev;
210 struct usb_device *udev = to_usb_device(dev);
211 u8 request = REALTEK_USB_VENQT_CMD_REQ;
212 u8 reqtype = REALTEK_USB_VENQT_WRITE;
213 u16 wvalue;
214 u16 index = REALTEK_USB_VENQT_CMD_IDX;
215 int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
216 u8 *buffer;
217 dma_addr_t dma_addr;
218
219 wvalue = (u16)(addr&0x0000ffff);
220 buffer = usb_alloc_coherent(udev, (size_t)len, GFP_ATOMIC, &dma_addr);
221 if (!buffer)
222 return;
223 memcpy(buffer, data, len);
224 usb_control_msg(udev, pipe, request, reqtype, wvalue,
225 index, buffer, len, 50);
226
227 usb_free_coherent(udev, (size_t)len, buffer, dma_addr);
228}
229
2ca20f79
G		 230static void _rtl_usb_io_handler_init(struct device *dev,
231 struct ieee80211_hw *hw)
232{
233 struct rtl_priv *rtlpriv = rtl_priv(hw);
234
235 rtlpriv->io.dev = dev;
236 mutex_init(&rtlpriv->io.bb_mutex);
237 rtlpriv->io.write8_async = _usb_write8_async;
238 rtlpriv->io.write16_async = _usb_write16_async;
239 rtlpriv->io.write32_async = _usb_write32_async;
2ca20f79
G		 240 rtlpriv->io.read8_sync = _usb_read8_sync;
241 rtlpriv->io.read16_sync = _usb_read16_sync;
242 rtlpriv->io.read32_sync = _usb_read32_sync;
ff6ff96b 243 rtlpriv->io.writeN_sync = _usb_writeN_sync;
2ca20f79
G		 244}
245
246static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
247{
2e3e66e3 248 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
2ca20f79
G		 249
250 mutex_destroy(&rtlpriv->io.bb_mutex);
251}
252
253/**
254 *
255 * Default aggregation handler. Do nothing and just return the oldest skb.
256 */
257static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
258 struct sk_buff_head *list)
259{
260 return skb_dequeue(list);
261}
262
263#define IS_HIGH_SPEED_USB(udev) \
264 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
265
266static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
267{
268 u32 i;
269 struct rtl_priv *rtlpriv = rtl_priv(hw);
270 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
271
272 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
273 ? USB_HIGH_SPEED_BULK_SIZE
274 : USB_FULL_SPEED_BULK_SIZE;
275
f30d7507
JP		 276 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
277 rtlusb->max_bulk_out_size);
2ca20f79
G		 278
279 for (i = 0; i < __RTL_TXQ_NUM; i++) {
280 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
281 if (!ep_num) {
282 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
f30d7507 283 "Invalid endpoint map setting!\n");
2ca20f79
G		 284 return -EINVAL;
285 }
286 }
287
288 rtlusb->usb_tx_post_hdl =
289 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
290 rtlusb->usb_tx_cleanup =
291 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
292 rtlusb->usb_tx_aggregate_hdl =
293 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
294 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
295 : &_none_usb_tx_aggregate_hdl;
296
297 init_usb_anchor(&rtlusb->tx_submitted);
298 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
299 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
300 init_usb_anchor(&rtlusb->tx_pending[i]);
301 }
302 return 0;
303}
304
305static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
306{
307 struct rtl_priv *rtlpriv = rtl_priv(hw);
308 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
309 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
310
311 rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
312 rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
313 rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
314 rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
315 rtlusb->usb_rx_segregate_hdl =
316 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
317
292b1192 318 pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
2ca20f79
G		 319 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
320 init_usb_anchor(&rtlusb->rx_submitted);
321 return 0;
322}
323
324static int _rtl_usb_init(struct ieee80211_hw *hw)
325{
326 struct rtl_priv *rtlpriv = rtl_priv(hw);
327 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
328 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
329 int err;
330 u8 epidx;
331 struct usb_interface *usb_intf = rtlusb->intf;
332 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
333
334 rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
335 for (epidx = 0; epidx < epnums; epidx++) {
336 struct usb_endpoint_descriptor *pep_desc;
337 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
338
339 if (usb_endpoint_dir_in(pep_desc))
340 rtlusb->in_ep_nums++;
341 else if (usb_endpoint_dir_out(pep_desc))
342 rtlusb->out_ep_nums++;
343
344 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
f30d7507 345 "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
2ca20f79 346 pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
f30d7507 347 pep_desc->bInterval);
2ca20f79
G		 348 }
349 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num)
350 return -EINVAL ;
351
352 /* usb endpoint mapping */
353 err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
354 rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
355 _rtl_usb_init_tx(hw);
356 _rtl_usb_init_rx(hw);
357 return err;
358}
359
360static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
361{
362 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
363 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
364 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
365 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
366
367 rtlhal->hw = hw;
7ea47240
LF		 368 ppsc->inactiveps = false;
369 ppsc->leisure_ps = false;
370 ppsc->fwctrl_lps = false;
371 ppsc->reg_fwctrl_lps = 3;
2ca20f79
G		 372 ppsc->reg_max_lps_awakeintvl = 5;
373 ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
374
375 /* IBSS */
376 mac->beacon_interval = 100;
377
378 /* AMPDU */
379 mac->min_space_cfg = 0;
380 mac->max_mss_density = 0;
381
382 /* set sane AMPDU defaults */
383 mac->current_ampdu_density = 7;
384 mac->current_ampdu_factor = 3;
385
386 /* QOS */
387 rtlusb->acm_method = eAcmWay2_SW;
388
389 /* IRQ */
390 /* HIMR - turn all on */
391 rtlusb->irq_mask[0] = 0xFFFFFFFF;
392 /* HIMR_EX - turn all on */
393 rtlusb->irq_mask[1] = 0xFFFFFFFF;
394 rtlusb->disableHWSM = true;
395 return 0;
396}
397
398#define __RADIO_TAP_SIZE_RSV 32
399
400static void _rtl_rx_completed(struct urb *urb);
401
402static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
403 struct rtl_usb *rtlusb,
404 struct urb *urb,
405 gfp_t gfp_mask)
406{
407 struct sk_buff *skb;
408 struct rtl_priv *rtlpriv = rtl_priv(hw);
409
410 skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
411 gfp_mask);
412 if (!skb) {
413 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 414 "Failed to __dev_alloc_skb!!\n");
2ca20f79
G		 415 return ERR_PTR(-ENOMEM);
416 }
417
418 /* reserve some space for mac80211's radiotap */
419 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
420 usb_fill_bulk_urb(urb, rtlusb->udev,
421 usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
422 skb->data, min(skb_tailroom(skb),
423 (int)rtlusb->rx_max_size),
424 _rtl_rx_completed, skb);
425
426 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
427 return skb;
428}
429
430#undef __RADIO_TAP_SIZE_RSV
431
432static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
433 struct sk_buff *skb)
434{
435 struct rtl_priv *rtlpriv = rtl_priv(hw);
436 u8 *rxdesc = skb->data;
437 struct ieee80211_hdr *hdr;
438 bool unicast = false;
17c9ac62 439 __le16 fc;
2ca20f79
G		 440 struct ieee80211_rx_status rx_status = {0};
441 struct rtl_stats stats = {
442 .signal = 0,
443 .noise = -98,
444 .rate = 0,
445 };
446
447 skb_pull(skb, RTL_RX_DESC_SIZE);
448 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
449 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
450 hdr = (struct ieee80211_hdr *)(skb->data);
17c9ac62 451 fc = hdr->frame_control;
7ea47240 452 if (!stats.crc) {
2ca20f79
G		 453 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
454
455 if (is_broadcast_ether_addr(hdr->addr1)) {
456 /*TODO*/;
457 } else if (is_multicast_ether_addr(hdr->addr1)) {
458 /*TODO*/
459 } else {
460 unicast = true;
461 rtlpriv->stats.rxbytesunicast += skb->len;
462 }
463
464 rtl_is_special_data(hw, skb, false);
465
466 if (ieee80211_is_data(fc)) {
467 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
468
469 if (unicast)
470 rtlpriv->link_info.num_rx_inperiod++;
471 }
472 }
473}
474
475static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
476 struct sk_buff *skb)
477{
478 struct rtl_priv *rtlpriv = rtl_priv(hw);
479 u8 *rxdesc = skb->data;
480 struct ieee80211_hdr *hdr;
481 bool unicast = false;
17c9ac62 482 __le16 fc;
2ca20f79
G		 483 struct ieee80211_rx_status rx_status = {0};
484 struct rtl_stats stats = {
485 .signal = 0,
486 .noise = -98,
487 .rate = 0,
488 };
489
490 skb_pull(skb, RTL_RX_DESC_SIZE);
491 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
492 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
493 hdr = (struct ieee80211_hdr *)(skb->data);
17c9ac62 494 fc = hdr->frame_control;
7ea47240 495 if (!stats.crc) {
2ca20f79
G		 496 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
497
498 if (is_broadcast_ether_addr(hdr->addr1)) {
499 /*TODO*/;
500 } else if (is_multicast_ether_addr(hdr->addr1)) {
501 /*TODO*/
502 } else {
503 unicast = true;
504 rtlpriv->stats.rxbytesunicast += skb->len;
505 }
506
507 rtl_is_special_data(hw, skb, false);
508
509 if (ieee80211_is_data(fc)) {
510 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
511
512 if (unicast)
513 rtlpriv->link_info.num_rx_inperiod++;
514 }
515 if (likely(rtl_action_proc(hw, skb, false))) {
516 struct sk_buff *uskb = NULL;
517 u8 *pdata;
518
519 uskb = dev_alloc_skb(skb->len + 128);
76a92be5
LF		 520 if (uskb) { /* drop packet on allocation failure */
521 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
522 sizeof(rx_status));
523 pdata = (u8 *)skb_put(uskb, skb->len);
524 memcpy(pdata, skb->data, skb->len);
525 ieee80211_rx_irqsafe(hw, uskb);
526 }
2ca20f79 527 dev_kfree_skb_any(skb);
2ca20f79
G		 528 } else {
529 dev_kfree_skb_any(skb);
530 }
531 }
532}
533
534static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
535{
536 struct sk_buff *_skb;
537 struct sk_buff_head rx_queue;
538 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
539
540 skb_queue_head_init(&rx_queue);
541 if (rtlusb->usb_rx_segregate_hdl)
542 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
543 WARN_ON(skb_queue_empty(&rx_queue));
544 while (!skb_queue_empty(&rx_queue)) {
545 _skb = skb_dequeue(&rx_queue);
546 _rtl_usb_rx_process_agg(hw, skb);
547 ieee80211_rx_irqsafe(hw, skb);
548 }
549}
550
551static void _rtl_rx_completed(struct urb *_urb)
552{
553 struct sk_buff *skb = (struct sk_buff *)_urb->context;
554 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
555 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
556 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
557 struct rtl_priv *rtlpriv = rtl_priv(hw);
558 int err = 0;
559
560 if (unlikely(IS_USB_STOP(rtlusb)))
561 goto free;
562
563 if (likely(0 == _urb->status)) {
564 /* If this code were moved to work queue, would CPU
565 * utilization be improved? NOTE: We shall allocate another skb
566 * and reuse the original one.
567 */
568 skb_put(skb, _urb->actual_length);
569
570 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
571 struct sk_buff *_skb;
572 _rtl_usb_rx_process_noagg(hw, skb);
573 _skb = _rtl_prep_rx_urb(hw, rtlusb, _urb, GFP_ATOMIC);
574 if (IS_ERR(_skb)) {
575 err = PTR_ERR(_skb);
576 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 577 "Can't allocate skb for bulk IN!\n");
2ca20f79
G		 578 return;
579 }
580 skb = _skb;
581 } else{
582 /* TO DO */
583 _rtl_rx_pre_process(hw, skb);
292b1192 584 pr_err("rx agg not supported\n");
2ca20f79
G		 585 }
586 goto resubmit;
587 }
588
589 switch (_urb->status) {
590 /* disconnect */
591 case -ENOENT:
592 case -ECONNRESET:
593 case -ENODEV:
594 case -ESHUTDOWN:
595 goto free;
596 default:
597 break;
598 }
599
600resubmit:
601 skb_reset_tail_pointer(skb);
602 skb_trim(skb, 0);
603
604 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
605 err = usb_submit_urb(_urb, GFP_ATOMIC);
606 if (unlikely(err)) {
607 usb_unanchor_urb(_urb);
608 goto free;
609 }
610 return;
611
612free:
613 dev_kfree_skb_irq(skb);
614}
615
616static int _rtl_usb_receive(struct ieee80211_hw *hw)
617{
618 struct urb *urb;
619 struct sk_buff *skb;
620 int err;
621 int i;
622 struct rtl_priv *rtlpriv = rtl_priv(hw);
623 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
624
625 WARN_ON(0 == rtlusb->rx_urb_num);
626 /* 1600 == 1514 + max WLAN header + rtk info */
627 WARN_ON(rtlusb->rx_max_size < 1600);
628
629 for (i = 0; i < rtlusb->rx_urb_num; i++) {
630 err = -ENOMEM;
631 urb = usb_alloc_urb(0, GFP_KERNEL);
632 if (!urb) {
633 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 634 "Failed to alloc URB!!\n");
2ca20f79
G		 635 goto err_out;
636 }
637
638 skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
639 if (IS_ERR(skb)) {
640 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 641 "Failed to prep_rx_urb!!\n");
2ca20f79
G		 642 err = PTR_ERR(skb);
643 goto err_out;
644 }
645
646 usb_anchor_urb(urb, &rtlusb->rx_submitted);
647 err = usb_submit_urb(urb, GFP_KERNEL);
648 if (err)
649 goto err_out;
650 usb_free_urb(urb);
651 }
652 return 0;
653
654err_out:
655 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
656 return err;
657}
658
659static int rtl_usb_start(struct ieee80211_hw *hw)
660{
661 int err;
662 struct rtl_priv *rtlpriv = rtl_priv(hw);
663 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
664 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
665
666 err = rtlpriv->cfg->ops->hw_init(hw);
667 rtl_init_rx_config(hw);
668
669 /* Enable software */
670 SET_USB_START(rtlusb);
671 /* should after adapter start and interrupt enable. */
672 set_hal_start(rtlhal);
673
674 /* Start bulk IN */
675 _rtl_usb_receive(hw);
676
677 return err;
678}
679/**
680 *
681 *
682 */
683
684/*======================= tx =========================================*/
685static void rtl_usb_cleanup(struct ieee80211_hw *hw)
686{
687 u32 i;
688 struct sk_buff *_skb;
689 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
690 struct ieee80211_tx_info *txinfo;
691
692 SET_USB_STOP(rtlusb);
693
694 /* clean up rx stuff. */
695 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
696
697 /* clean up tx stuff */
698 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
699 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
700 rtlusb->usb_tx_cleanup(hw, _skb);
701 txinfo = IEEE80211_SKB_CB(_skb);
702 ieee80211_tx_info_clear_status(txinfo);
703 txinfo->flags |= IEEE80211_TX_STAT_ACK;
704 ieee80211_tx_status_irqsafe(hw, _skb);
705 }
706 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
707 }
708 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
709}
710
711/**
712 *
713 * We may add some struct into struct rtl_usb later. Do deinit here.
714 *
715 */
716static void rtl_usb_deinit(struct ieee80211_hw *hw)
717{
718 rtl_usb_cleanup(hw);
719}
720
721static void rtl_usb_stop(struct ieee80211_hw *hw)
722{
723 struct rtl_priv *rtlpriv = rtl_priv(hw);
724 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
725 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
726
727 /* should after adapter start and interrupt enable. */
728 set_hal_stop(rtlhal);
729 /* Enable software */
730 SET_USB_STOP(rtlusb);
731 rtl_usb_deinit(hw);
732 rtlpriv->cfg->ops->hw_disable(hw);
733}
734
735static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
736{
737 int err;
738 struct rtl_priv *rtlpriv = rtl_priv(hw);
739 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
740
741 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
742 err = usb_submit_urb(_urb, GFP_ATOMIC);
743 if (err < 0) {
744 struct sk_buff *skb;
745
746 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 747 "Failed to submit urb\n");
2ca20f79
G		 748 usb_unanchor_urb(_urb);
749 skb = (struct sk_buff *)_urb->context;
750 kfree_skb(skb);
751 }
752 usb_free_urb(_urb);
753}
754
755static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
756 struct sk_buff *skb)
757{
758 struct rtl_priv *rtlpriv = rtl_priv(hw);
759 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
760 struct ieee80211_tx_info *txinfo;
761
762 rtlusb->usb_tx_post_hdl(hw, urb, skb);
763 skb_pull(skb, RTL_TX_HEADER_SIZE);
764 txinfo = IEEE80211_SKB_CB(skb);
765 ieee80211_tx_info_clear_status(txinfo);
766 txinfo->flags |= IEEE80211_TX_STAT_ACK;
767
768 if (urb->status) {
769 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 770 "Urb has error status 0x%X\n", urb->status);
2ca20f79
G		 771 goto out;
772 }
773 /* TODO: statistics */
774out:
775 ieee80211_tx_status_irqsafe(hw, skb);
776 return urb->status;
777}
778
779static void _rtl_tx_complete(struct urb *urb)
780{
781 struct sk_buff *skb = (struct sk_buff *)urb->context;
782 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
783 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
784 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
785 int err;
786
787 if (unlikely(IS_USB_STOP(rtlusb)))
788 return;
789 err = _usb_tx_post(hw, urb, skb);
790 if (err) {
791 /* Ignore error and keep issuiing other urbs */
792 return;
793 }
794}
795
796static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
797 struct sk_buff *skb, u32 ep_num)
798{
799 struct rtl_priv *rtlpriv = rtl_priv(hw);
800 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
801 struct urb *_urb;
802
803 WARN_ON(NULL == skb);
804 _urb = usb_alloc_urb(0, GFP_ATOMIC);
805 if (!_urb) {
806 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 807 "Can't allocate URB for bulk out!\n");
2ca20f79
G		 808 kfree_skb(skb);
809 return NULL;
810 }
811 _rtl_install_trx_info(rtlusb, skb, ep_num);
812 usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
813 ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
814 _urb->transfer_flags |= URB_ZERO_PACKET;
815 return _urb;
816}
817
818static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
819 enum rtl_txq qnum)
820{
821 struct rtl_priv *rtlpriv = rtl_priv(hw);
822 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
823 u32 ep_num;
824 struct urb *_urb = NULL;
825 struct sk_buff *_skb = NULL;
826 struct sk_buff_head *skb_list;
827 struct usb_anchor *urb_list;
828
829 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
830 if (unlikely(IS_USB_STOP(rtlusb))) {
831 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
f30d7507 832 "USB device is stopping...\n");
2ca20f79
G		 833 kfree_skb(skb);
834 return;
835 }
836 ep_num = rtlusb->ep_map.ep_mapping[qnum];
837 skb_list = &rtlusb->tx_skb_queue[ep_num];
838 _skb = skb;
839 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
840 if (unlikely(!_urb)) {
841 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
f30d7507 842 "Can't allocate urb. Drop skb!\n");
2ca20f79
G		 843 return;
844 }
845 urb_list = &rtlusb->tx_pending[ep_num];
846 _rtl_submit_tx_urb(hw, _urb);
847}
848
849static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
850 u16 hw_queue)
851{
852 struct rtl_priv *rtlpriv = rtl_priv(hw);
853 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
854 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
855 struct rtl_tx_desc *pdesc = NULL;
d93cdee9 856 struct rtl_tcb_desc tcb_desc;
2ca20f79 857 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
17c9ac62 858 __le16 fc = hdr->frame_control;
2ca20f79
G		 859 u8 *pda_addr = hdr->addr1;
860 /* ssn */
861 u8 *qc = NULL;
862 u8 tid = 0;
863 u16 seq_number = 0;
864
831d8547 865 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
d93cdee9 866 if (ieee80211_is_auth(fc)) {
f30d7507 867 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
d93cdee9
C		 868 rtl_ips_nic_on(hw);
869 }
870
871 if (rtlpriv->psc.sw_ps_enabled) {
872 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
873 !ieee80211_has_pm(fc))
874 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
875 }
876
2ca20f79
G		 877 rtl_action_proc(hw, skb, true);
878 if (is_multicast_ether_addr(pda_addr))
879 rtlpriv->stats.txbytesmulticast += skb->len;
880 else if (is_broadcast_ether_addr(pda_addr))
881 rtlpriv->stats.txbytesbroadcast += skb->len;
882 else
883 rtlpriv->stats.txbytesunicast += skb->len;
884 if (ieee80211_is_data_qos(fc)) {
885 qc = ieee80211_get_qos_ctl(hdr);
886 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
887 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
888 IEEE80211_SCTL_SEQ) >> 4;
889 seq_number += 1;
890 seq_number <<= 4;
891 }
892 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, skb,
d93cdee9 893 hw_queue, &tcb_desc);
2ca20f79
G		 894 if (!ieee80211_has_morefrags(hdr->frame_control)) {
895 if (qc)
896 mac->tids[tid].seq_number = seq_number;
897 }
898 if (ieee80211_is_data(fc))
899 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
900}
901
0baa0fd7
C		 902static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
903 struct rtl_tcb_desc *dummy)
2ca20f79
G		 904{
905 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
906 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
907 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
17c9ac62 908 __le16 fc = hdr->frame_control;
2ca20f79
G		 909 u16 hw_queue;
910
911 if (unlikely(is_hal_stop(rtlhal)))
912 goto err_free;
913 hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
914 _rtl_usb_tx_preprocess(hw, skb, hw_queue);
915 _rtl_usb_transmit(hw, skb, hw_queue);
916 return NETDEV_TX_OK;
917
918err_free:
919 dev_kfree_skb_any(skb);
920 return NETDEV_TX_OK;
921}
922
923static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
924 struct sk_buff *skb)
925{
926 return false;
927}
928
929static struct rtl_intf_ops rtl_usb_ops = {
930 .adapter_start = rtl_usb_start,
931 .adapter_stop = rtl_usb_stop,
932 .adapter_tx = rtl_usb_tx,
933 .waitq_insert = rtl_usb_tx_chk_waitq_insert,
934};
935
936int __devinit rtl_usb_probe(struct usb_interface *intf,
937 const struct usb_device_id *id)
938{
939 int err;
940 struct ieee80211_hw *hw = NULL;
941 struct rtl_priv *rtlpriv = NULL;
942 struct usb_device *udev;
943 struct rtl_usb_priv *usb_priv;
944
945 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
946 sizeof(struct rtl_usb_priv), &rtl_ops);
947 if (!hw) {
9d833ed7 948 RT_ASSERT(false, "ieee80211 alloc failed\n");
2ca20f79
G		 949 return -ENOMEM;
950 }
951 rtlpriv = hw->priv;
952 SET_IEEE80211_DEV(hw, &intf->dev);
953 udev = interface_to_usbdev(intf);
954 usb_get_dev(udev);
955 usb_priv = rtl_usbpriv(hw);
956 memset(usb_priv, 0, sizeof(*usb_priv));
957 usb_priv->dev.intf = intf;
958 usb_priv->dev.udev = udev;
959 usb_set_intfdata(intf, hw);
960 /* init cfg & intf_ops */
961 rtlpriv->rtlhal.interface = INTF_USB;
962 rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_info);
963 rtlpriv->intf_ops = &rtl_usb_ops;
964 rtl_dbgp_flag_init(hw);
965 /* Init IO handler */
966 _rtl_usb_io_handler_init(&udev->dev, hw);
967 rtlpriv->cfg->ops->read_chip_version(hw);
968 /*like read eeprom and so on */
969 rtlpriv->cfg->ops->read_eeprom_info(hw);
970 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
f30d7507 971 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
2ca20f79
G		 972 goto error_out;
973 }
974 rtlpriv->cfg->ops->init_sw_leds(hw);
975 err = _rtl_usb_init(hw);
976 err = _rtl_usb_init_sw(hw);
977 /* Init mac80211 sw */
978 err = rtl_init_core(hw);
979 if (err) {
980 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
f30d7507 981 "Can't allocate sw for mac80211\n");
2ca20f79
G		 982 goto error_out;
983 }
984
985 /*init rfkill */
986 /* rtl_init_rfkill(hw); */
987
988 err = ieee80211_register_hw(hw);
989 if (err) {
990 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
f30d7507 991 "Can't register mac80211 hw\n");
2ca20f79
G		 992 goto error_out;
993 } else {
994 rtlpriv->mac80211.mac80211_registered = 1;
995 }
996 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
997 return 0;
998error_out:
999 rtl_deinit_core(hw);
1000 _rtl_usb_io_handler_release(hw);
1001 ieee80211_free_hw(hw);
1002 usb_put_dev(udev);
1003 return -ENODEV;
1004}
1005EXPORT_SYMBOL(rtl_usb_probe);
1006
1007void rtl_usb_disconnect(struct usb_interface *intf)
1008{
1009 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1010 struct rtl_priv *rtlpriv = rtl_priv(hw);
1011 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1012 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1013
1014 if (unlikely(!rtlpriv))
1015 return;
1016 /*ieee80211_unregister_hw will call ops_stop */
1017 if (rtlmac->mac80211_registered == 1) {
1018 ieee80211_unregister_hw(hw);
1019 rtlmac->mac80211_registered = 0;
1020 } else {
1021 rtl_deinit_deferred_work(hw);
1022 rtlpriv->intf_ops->adapter_stop(hw);
1023 }
1024 /*deinit rfkill */
1025 /* rtl_deinit_rfkill(hw); */
1026 rtl_usb_deinit(hw);
1027 rtl_deinit_core(hw);
1028 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1029 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1030 _rtl_usb_io_handler_release(hw);
1031 usb_put_dev(rtlusb->udev);
1032 usb_set_intfdata(intf, NULL);
1033 ieee80211_free_hw(hw);
1034}
1035EXPORT_SYMBOL(rtl_usb_disconnect);
1036
1037int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1038{
1039 return 0;
1040}
1041EXPORT_SYMBOL(rtl_usb_suspend);
1042
1043int rtl_usb_resume(struct usb_interface *pusb_intf)
1044{
1045 return 0;
1046}
1047EXPORT_SYMBOL(rtl_usb_resume);
Linux kernel - Deliverables
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