1 /******************************************************************************
3 * Copyright(c) 2009-2011 Realtek Corporation. All rights reserved.
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.
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
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
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
26 *****************************************************************************/
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 #include <linux/usb.h>
31 #include <linux/export.h>
37 #include "rtl8192c/fw_common.h"
39 #define REALTEK_USB_VENQT_READ 0xC0
40 #define REALTEK_USB_VENQT_WRITE 0x40
41 #define REALTEK_USB_VENQT_CMD_REQ 0x05
42 #define REALTEK_USB_VENQT_CMD_IDX 0x00
44 #define MAX_USBCTRL_VENDORREQ_TIMES 10
46 static void usbctrl_async_callback(struct urb *urb)
52 static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
53 u16 value, u16 index, void *pdata,
59 struct usb_ctrlrequest *dr;
61 struct rtl819x_async_write_data {
62 u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
63 struct usb_ctrlrequest dr;
66 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
67 reqtype = REALTEK_USB_VENQT_WRITE;
69 buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
73 urb = usb_alloc_urb(0, GFP_ATOMIC);
81 dr->bRequestType = reqtype;
82 dr->bRequest = request;
83 dr->wValue = cpu_to_le16(value);
84 dr->wIndex = cpu_to_le16(index);
85 dr->wLength = cpu_to_le16(len);
86 /* data are already in little-endian order */
87 memcpy(buf, pdata, len);
88 usb_fill_control_urb(urb, udev, pipe,
89 (unsigned char *)dr, buf, len,
90 usbctrl_async_callback, buf);
91 rc = usb_submit_urb(urb, GFP_ATOMIC);
98 static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
99 u16 value, u16 index, void *pdata,
105 int vendorreq_times = 0;
108 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
109 reqtype = REALTEK_USB_VENQT_READ;
111 while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
112 status = usb_control_msg(udev, pipe, request, reqtype, value,
113 index, pdata, len, 0); /*max. timeout*/
115 /* firmware download is checksumed, don't retry */
116 if ((value >= FW_8192C_START_ADDRESS &&
117 value <= FW_8192C_END_ADDRESS))
123 if (status < 0 && count++ < 4)
124 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
125 value, status, le32_to_cpu(*(u32 *)pdata));
129 static u32 _usb_read_sync(struct usb_device *udev, u32 addr, u16 len)
137 data = kmalloc(sizeof(u32), GFP_KERNEL);
140 request = REALTEK_USB_VENQT_CMD_REQ;
141 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
144 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
145 ret = le32_to_cpu(*data);
150 static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
152 struct device *dev = rtlpriv->io.dev;
154 return (u8)_usb_read_sync(to_usb_device(dev), addr, 1);
157 static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
159 struct device *dev = rtlpriv->io.dev;
161 return (u16)_usb_read_sync(to_usb_device(dev), addr, 2);
164 static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
166 struct device *dev = rtlpriv->io.dev;
168 return _usb_read_sync(to_usb_device(dev), addr, 4);
171 static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
179 request = REALTEK_USB_VENQT_CMD_REQ;
180 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
181 wvalue = (u16)(addr&0x0000ffff);
182 data = cpu_to_le32(val);
183 _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
187 static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
189 struct device *dev = rtlpriv->io.dev;
191 _usb_write_async(to_usb_device(dev), addr, val, 1);
194 static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
196 struct device *dev = rtlpriv->io.dev;
198 _usb_write_async(to_usb_device(dev), addr, val, 2);
201 static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
203 struct device *dev = rtlpriv->io.dev;
205 _usb_write_async(to_usb_device(dev), addr, val, 4);
208 static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
211 struct device *dev = rtlpriv->io.dev;
212 struct usb_device *udev = to_usb_device(dev);
213 u8 request = REALTEK_USB_VENQT_CMD_REQ;
214 u8 reqtype = REALTEK_USB_VENQT_WRITE;
216 u16 index = REALTEK_USB_VENQT_CMD_IDX;
217 int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
221 wvalue = (u16)(addr&0x0000ffff);
222 buffer = usb_alloc_coherent(udev, (size_t)len, GFP_ATOMIC, &dma_addr);
225 memcpy(buffer, data, len);
226 usb_control_msg(udev, pipe, request, reqtype, wvalue,
227 index, buffer, len, 50);
229 usb_free_coherent(udev, (size_t)len, buffer, dma_addr);
232 static void _rtl_usb_io_handler_init(struct device *dev,
233 struct ieee80211_hw *hw)
235 struct rtl_priv *rtlpriv = rtl_priv(hw);
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.read8_sync = _usb_read8_sync;
243 rtlpriv->io.read16_sync = _usb_read16_sync;
244 rtlpriv->io.read32_sync = _usb_read32_sync;
245 rtlpriv->io.writeN_sync = _usb_writeN_sync;
248 static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
250 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
252 mutex_destroy(&rtlpriv->io.bb_mutex);
257 * Default aggregation handler. Do nothing and just return the oldest skb.
259 static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
260 struct sk_buff_head *list)
262 return skb_dequeue(list);
265 #define IS_HIGH_SPEED_USB(udev) \
266 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
268 static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
271 struct rtl_priv *rtlpriv = rtl_priv(hw);
272 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
274 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
275 ? USB_HIGH_SPEED_BULK_SIZE
276 : USB_FULL_SPEED_BULK_SIZE;
278 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("USB Max Bulk-out Size=%d\n",
279 rtlusb->max_bulk_out_size));
281 for (i = 0; i < __RTL_TXQ_NUM; i++) {
282 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
284 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
285 ("Invalid endpoint map setting!\n"));
290 rtlusb->usb_tx_post_hdl =
291 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
292 rtlusb->usb_tx_cleanup =
293 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
294 rtlusb->usb_tx_aggregate_hdl =
295 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
296 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
297 : &_none_usb_tx_aggregate_hdl;
299 init_usb_anchor(&rtlusb->tx_submitted);
300 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
301 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
302 init_usb_anchor(&rtlusb->tx_pending[i]);
307 static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
309 struct rtl_priv *rtlpriv = rtl_priv(hw);
310 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
311 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
313 rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
314 rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
315 rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
316 rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
317 rtlusb->usb_rx_segregate_hdl =
318 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
320 pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
321 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
322 init_usb_anchor(&rtlusb->rx_submitted);
326 static int _rtl_usb_init(struct ieee80211_hw *hw)
328 struct rtl_priv *rtlpriv = rtl_priv(hw);
329 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
330 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
333 struct usb_interface *usb_intf = rtlusb->intf;
334 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
336 rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
337 for (epidx = 0; epidx < epnums; epidx++) {
338 struct usb_endpoint_descriptor *pep_desc;
339 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
341 if (usb_endpoint_dir_in(pep_desc))
342 rtlusb->in_ep_nums++;
343 else if (usb_endpoint_dir_out(pep_desc))
344 rtlusb->out_ep_nums++;
346 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
347 ("USB EP(0x%02x), MaxPacketSize=%d ,Interval=%d.\n",
348 pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
349 pep_desc->bInterval));
351 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num)
354 /* usb endpoint mapping */
355 err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
356 rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
357 _rtl_usb_init_tx(hw);
358 _rtl_usb_init_rx(hw);
362 static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
364 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
365 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
366 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
367 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
370 ppsc->inactiveps = false;
371 ppsc->leisure_ps = false;
372 ppsc->fwctrl_lps = false;
373 ppsc->reg_fwctrl_lps = 3;
374 ppsc->reg_max_lps_awakeintvl = 5;
375 ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
378 mac->beacon_interval = 100;
381 mac->min_space_cfg = 0;
382 mac->max_mss_density = 0;
384 /* set sane AMPDU defaults */
385 mac->current_ampdu_density = 7;
386 mac->current_ampdu_factor = 3;
389 rtlusb->acm_method = eAcmWay2_SW;
392 /* HIMR - turn all on */
393 rtlusb->irq_mask[0] = 0xFFFFFFFF;
394 /* HIMR_EX - turn all on */
395 rtlusb->irq_mask[1] = 0xFFFFFFFF;
396 rtlusb->disableHWSM = true;
400 #define __RADIO_TAP_SIZE_RSV 32
402 static void _rtl_rx_completed(struct urb *urb);
404 static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
405 struct rtl_usb *rtlusb,
410 struct rtl_priv *rtlpriv = rtl_priv(hw);
412 skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
415 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
416 ("Failed to __dev_alloc_skb!!\n"))
417 return ERR_PTR(-ENOMEM);
420 /* reserve some space for mac80211's radiotap */
421 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
422 usb_fill_bulk_urb(urb, rtlusb->udev,
423 usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
424 skb->data, min(skb_tailroom(skb),
425 (int)rtlusb->rx_max_size),
426 _rtl_rx_completed, skb);
428 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
432 #undef __RADIO_TAP_SIZE_RSV
434 static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
437 struct rtl_priv *rtlpriv = rtl_priv(hw);
438 u8 *rxdesc = skb->data;
439 struct ieee80211_hdr *hdr;
440 bool unicast = false;
442 struct ieee80211_rx_status rx_status = {0};
443 struct rtl_stats stats = {
449 skb_pull(skb, RTL_RX_DESC_SIZE);
450 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
451 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
452 hdr = (struct ieee80211_hdr *)(skb->data);
453 fc = hdr->frame_control;
455 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
457 if (is_broadcast_ether_addr(hdr->addr1)) {
459 } else if (is_multicast_ether_addr(hdr->addr1)) {
463 rtlpriv->stats.rxbytesunicast += skb->len;
466 rtl_is_special_data(hw, skb, false);
468 if (ieee80211_is_data(fc)) {
469 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
472 rtlpriv->link_info.num_rx_inperiod++;
477 static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
480 struct rtl_priv *rtlpriv = rtl_priv(hw);
481 u8 *rxdesc = skb->data;
482 struct ieee80211_hdr *hdr;
483 bool unicast = false;
485 struct ieee80211_rx_status rx_status = {0};
486 struct rtl_stats stats = {
492 skb_pull(skb, RTL_RX_DESC_SIZE);
493 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
494 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
495 hdr = (struct ieee80211_hdr *)(skb->data);
496 fc = hdr->frame_control;
498 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
500 if (is_broadcast_ether_addr(hdr->addr1)) {
502 } else if (is_multicast_ether_addr(hdr->addr1)) {
506 rtlpriv->stats.rxbytesunicast += skb->len;
509 rtl_is_special_data(hw, skb, false);
511 if (ieee80211_is_data(fc)) {
512 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
515 rtlpriv->link_info.num_rx_inperiod++;
517 if (likely(rtl_action_proc(hw, skb, false))) {
518 struct sk_buff *uskb = NULL;
521 uskb = dev_alloc_skb(skb->len + 128);
522 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
524 pdata = (u8 *)skb_put(uskb, skb->len);
525 memcpy(pdata, skb->data, skb->len);
526 dev_kfree_skb_any(skb);
527 ieee80211_rx_irqsafe(hw, uskb);
529 dev_kfree_skb_any(skb);
534 static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
536 struct sk_buff *_skb;
537 struct sk_buff_head rx_queue;
538 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
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);
551 static void _rtl_rx_completed(struct urb *_urb)
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);
560 if (unlikely(IS_USB_STOP(rtlusb)))
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.
568 skb_put(skb, _urb->actual_length);
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);
576 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
577 ("Can't allocate skb for bulk IN!\n"));
583 _rtl_rx_pre_process(hw, skb);
584 pr_err("rx agg not supported\n");
589 switch (_urb->status) {
601 skb_reset_tail_pointer(skb);
604 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
605 err = usb_submit_urb(_urb, GFP_ATOMIC);
607 usb_unanchor_urb(_urb);
613 dev_kfree_skb_irq(skb);
616 static int _rtl_usb_receive(struct ieee80211_hw *hw)
622 struct rtl_priv *rtlpriv = rtl_priv(hw);
623 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
625 WARN_ON(0 == rtlusb->rx_urb_num);
626 /* 1600 == 1514 + max WLAN header + rtk info */
627 WARN_ON(rtlusb->rx_max_size < 1600);
629 for (i = 0; i < rtlusb->rx_urb_num; i++) {
631 urb = usb_alloc_urb(0, GFP_KERNEL);
633 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
634 ("Failed to alloc URB!!\n"))
638 skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
640 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
641 ("Failed to prep_rx_urb!!\n"))
646 usb_anchor_urb(urb, &rtlusb->rx_submitted);
647 err = usb_submit_urb(urb, GFP_KERNEL);
655 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
659 static int rtl_usb_start(struct ieee80211_hw *hw)
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));
666 err = rtlpriv->cfg->ops->hw_init(hw);
667 rtl_init_rx_config(hw);
669 /* Enable software */
670 SET_USB_START(rtlusb);
671 /* should after adapter start and interrupt enable. */
672 set_hal_start(rtlhal);
675 _rtl_usb_receive(hw);
684 /*======================= tx =========================================*/
685 static void rtl_usb_cleanup(struct ieee80211_hw *hw)
688 struct sk_buff *_skb;
689 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
690 struct ieee80211_tx_info *txinfo;
692 SET_USB_STOP(rtlusb);
694 /* clean up rx stuff. */
695 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
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);
706 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
708 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
713 * We may add some struct into struct rtl_usb later. Do deinit here.
716 static void rtl_usb_deinit(struct ieee80211_hw *hw)
721 static void rtl_usb_stop(struct ieee80211_hw *hw)
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));
727 /* should after adapter start and interrupt enable. */
728 set_hal_stop(rtlhal);
729 /* Enable software */
730 SET_USB_STOP(rtlusb);
732 rtlpriv->cfg->ops->hw_disable(hw);
735 static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
738 struct rtl_priv *rtlpriv = rtl_priv(hw);
739 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
741 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
742 err = usb_submit_urb(_urb, GFP_ATOMIC);
746 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
747 ("Failed to submit urb.\n"));
748 usb_unanchor_urb(_urb);
749 skb = (struct sk_buff *)_urb->context;
755 static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
758 struct rtl_priv *rtlpriv = rtl_priv(hw);
759 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
760 struct ieee80211_tx_info *txinfo;
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;
769 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
770 ("Urb has error status 0x%X\n", urb->status));
773 /* TODO: statistics */
775 ieee80211_tx_status_irqsafe(hw, skb);
779 static void _rtl_tx_complete(struct urb *urb)
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);
787 if (unlikely(IS_USB_STOP(rtlusb)))
789 err = _usb_tx_post(hw, urb, skb);
791 /* Ignore error and keep issuiing other urbs */
796 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
797 struct sk_buff *skb, u32 ep_num)
799 struct rtl_priv *rtlpriv = rtl_priv(hw);
800 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
803 WARN_ON(NULL == skb);
804 _urb = usb_alloc_urb(0, GFP_ATOMIC);
806 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
807 ("Can't allocate URB for bulk out!\n"));
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;
818 static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
821 struct rtl_priv *rtlpriv = rtl_priv(hw);
822 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
824 struct urb *_urb = NULL;
825 struct sk_buff *_skb = NULL;
826 struct sk_buff_head *skb_list;
827 struct usb_anchor *urb_list;
829 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
830 if (unlikely(IS_USB_STOP(rtlusb))) {
831 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
832 ("USB device is stopping...\n"));
836 ep_num = rtlusb->ep_map.ep_mapping[qnum];
837 skb_list = &rtlusb->tx_skb_queue[ep_num];
839 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
840 if (unlikely(!_urb)) {
841 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
842 ("Can't allocate urb. Drop skb!\n"));
845 urb_list = &rtlusb->tx_pending[ep_num];
846 _rtl_submit_tx_urb(hw, _urb);
849 static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
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;
856 struct rtl_tcb_desc tcb_desc;
857 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
858 __le16 fc = hdr->frame_control;
859 u8 *pda_addr = hdr->addr1;
865 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
866 if (ieee80211_is_auth(fc)) {
867 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
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);
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;
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;
892 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, skb,
893 hw_queue, &tcb_desc);
894 if (!ieee80211_has_morefrags(hdr->frame_control)) {
896 mac->tids[tid].seq_number = seq_number;
898 if (ieee80211_is_data(fc))
899 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
902 static int rtl_usb_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
903 struct rtl_tcb_desc *dummy)
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);
908 __le16 fc = hdr->frame_control;
911 if (unlikely(is_hal_stop(rtlhal)))
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);
919 dev_kfree_skb_any(skb);
923 static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
929 static 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,
936 int __devinit rtl_usb_probe(struct usb_interface *intf,
937 const struct usb_device_id *id)
940 struct ieee80211_hw *hw = NULL;
941 struct rtl_priv *rtlpriv = NULL;
942 struct usb_device *udev;
943 struct rtl_usb_priv *usb_priv;
945 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
946 sizeof(struct rtl_usb_priv), &rtl_ops);
948 RT_ASSERT(false, ("%s : ieee80211 alloc failed\n", __func__));
952 SET_IEEE80211_DEV(hw, &intf->dev);
953 udev = interface_to_usbdev(intf);
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)) {
971 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
972 ("Can't init_sw_vars.\n"));
975 rtlpriv->cfg->ops->init_sw_leds(hw);
976 err = _rtl_usb_init(hw);
977 err = _rtl_usb_init_sw(hw);
978 /* Init mac80211 sw */
979 err = rtl_init_core(hw);
981 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
982 ("Can't allocate sw for mac80211.\n"));
987 /* rtl_init_rfkill(hw); */
989 err = ieee80211_register_hw(hw);
991 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
992 ("Can't register mac80211 hw.\n"));
995 rtlpriv->mac80211.mac80211_registered = 1;
997 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
1000 rtl_deinit_core(hw);
1001 _rtl_usb_io_handler_release(hw);
1002 ieee80211_free_hw(hw);
1006 EXPORT_SYMBOL(rtl_usb_probe);
1008 void rtl_usb_disconnect(struct usb_interface *intf)
1010 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1011 struct rtl_priv *rtlpriv = rtl_priv(hw);
1012 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1013 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1015 if (unlikely(!rtlpriv))
1017 /*ieee80211_unregister_hw will call ops_stop */
1018 if (rtlmac->mac80211_registered == 1) {
1019 ieee80211_unregister_hw(hw);
1020 rtlmac->mac80211_registered = 0;
1022 rtl_deinit_deferred_work(hw);
1023 rtlpriv->intf_ops->adapter_stop(hw);
1026 /* rtl_deinit_rfkill(hw); */
1028 rtl_deinit_core(hw);
1029 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1030 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1031 _rtl_usb_io_handler_release(hw);
1032 usb_put_dev(rtlusb->udev);
1033 usb_set_intfdata(intf, NULL);
1034 ieee80211_free_hw(hw);
1036 EXPORT_SYMBOL(rtl_usb_disconnect);
1038 int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1042 EXPORT_SYMBOL(rtl_usb_suspend);
1044 int rtl_usb_resume(struct usb_interface *pusb_intf)
1048 EXPORT_SYMBOL(rtl_usb_resume);