1 /******************************************************************************
3 * Copyright(c) 2009-2012 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 *****************************************************************************/
33 #include "rtl8192c/fw_common.h"
34 #include <linux/export.h>
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
41 #define MAX_USBCTRL_VENDORREQ_TIMES 10
43 static void usbctrl_async_callback(struct urb *urb)
47 kfree(urb->setup_packet);
49 kfree(urb->transfer_buffer);
53 static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
54 u16 value, u16 index, void *pdata,
60 struct usb_ctrlrequest *dr;
62 const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
65 if (WARN_ON_ONCE(len > databuf_maxlen))
68 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
69 reqtype = REALTEK_USB_VENQT_WRITE;
71 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
75 databuf = kmalloc(databuf_maxlen, GFP_ATOMIC);
81 urb = usb_alloc_urb(0, GFP_ATOMIC);
88 dr->bRequestType = reqtype;
89 dr->bRequest = request;
90 dr->wValue = cpu_to_le16(value);
91 dr->wIndex = cpu_to_le16(index);
92 dr->wLength = cpu_to_le16(len);
93 /* data are already in little-endian order */
94 memcpy(databuf, pdata, len);
95 usb_fill_control_urb(urb, udev, pipe,
96 (unsigned char *)dr, databuf, len,
97 usbctrl_async_callback, NULL);
98 rc = usb_submit_urb(urb, GFP_ATOMIC);
107 static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
108 u16 value, u16 index, void *pdata,
114 int vendorreq_times = 0;
117 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
118 reqtype = REALTEK_USB_VENQT_READ;
121 status = usb_control_msg(udev, pipe, request, reqtype, value,
122 index, pdata, len, 0); /*max. timeout*/
124 /* firmware download is checksumed, don't retry */
125 if ((value >= FW_8192C_START_ADDRESS &&
126 value <= FW_8192C_END_ADDRESS))
131 } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
133 if (status < 0 && count++ < 4)
134 pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
135 value, status, *(u32 *)pdata);
139 static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
141 struct device *dev = rtlpriv->io.dev;
142 struct usb_device *udev = to_usb_device(dev);
149 spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags);
150 if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT)
151 rtlpriv->usb_data_index = 0;
152 data = &rtlpriv->usb_data[rtlpriv->usb_data_index];
153 spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags);
154 request = REALTEK_USB_VENQT_CMD_REQ;
155 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
158 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
159 return le32_to_cpu(*data);
162 static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
164 return (u8)_usb_read_sync(rtlpriv, addr, 1);
167 static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
169 return (u16)_usb_read_sync(rtlpriv, addr, 2);
172 static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
174 return _usb_read_sync(rtlpriv, addr, 4);
177 static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
185 request = REALTEK_USB_VENQT_CMD_REQ;
186 index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
187 wvalue = (u16)(addr&0x0000ffff);
188 data = cpu_to_le32(val);
189 _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
193 static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
195 struct device *dev = rtlpriv->io.dev;
197 _usb_write_async(to_usb_device(dev), addr, val, 1);
200 static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
202 struct device *dev = rtlpriv->io.dev;
204 _usb_write_async(to_usb_device(dev), addr, val, 2);
207 static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
209 struct device *dev = rtlpriv->io.dev;
211 _usb_write_async(to_usb_device(dev), addr, val, 4);
214 static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
217 struct device *dev = rtlpriv->io.dev;
218 struct usb_device *udev = to_usb_device(dev);
219 u8 request = REALTEK_USB_VENQT_CMD_REQ;
220 u8 reqtype = REALTEK_USB_VENQT_WRITE;
222 u16 index = REALTEK_USB_VENQT_CMD_IDX;
223 int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
226 wvalue = (u16)(addr & 0x0000ffff);
227 buffer = kmemdup(data, len, GFP_ATOMIC);
230 usb_control_msg(udev, pipe, request, reqtype, wvalue,
231 index, buffer, len, 50);
236 static void _rtl_usb_io_handler_init(struct device *dev,
237 struct ieee80211_hw *hw)
239 struct rtl_priv *rtlpriv = rtl_priv(hw);
241 rtlpriv->io.dev = dev;
242 mutex_init(&rtlpriv->io.bb_mutex);
243 rtlpriv->io.write8_async = _usb_write8_async;
244 rtlpriv->io.write16_async = _usb_write16_async;
245 rtlpriv->io.write32_async = _usb_write32_async;
246 rtlpriv->io.read8_sync = _usb_read8_sync;
247 rtlpriv->io.read16_sync = _usb_read16_sync;
248 rtlpriv->io.read32_sync = _usb_read32_sync;
249 rtlpriv->io.writeN_sync = _usb_writeN_sync;
252 static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
254 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
256 mutex_destroy(&rtlpriv->io.bb_mutex);
261 * Default aggregation handler. Do nothing and just return the oldest skb.
263 static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
264 struct sk_buff_head *list)
266 return skb_dequeue(list);
269 #define IS_HIGH_SPEED_USB(udev) \
270 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
272 static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
275 struct rtl_priv *rtlpriv = rtl_priv(hw);
276 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
278 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
279 ? USB_HIGH_SPEED_BULK_SIZE
280 : USB_FULL_SPEED_BULK_SIZE;
282 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
283 rtlusb->max_bulk_out_size);
285 for (i = 0; i < __RTL_TXQ_NUM; i++) {
286 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
288 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
289 "Invalid endpoint map setting!\n");
294 rtlusb->usb_tx_post_hdl =
295 rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
296 rtlusb->usb_tx_cleanup =
297 rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
298 rtlusb->usb_tx_aggregate_hdl =
299 (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
300 ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
301 : &_none_usb_tx_aggregate_hdl;
303 init_usb_anchor(&rtlusb->tx_submitted);
304 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
305 skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
306 init_usb_anchor(&rtlusb->tx_pending[i]);
311 static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
313 struct rtl_priv *rtlpriv = rtl_priv(hw);
314 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
315 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
317 rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
318 rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
319 rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
320 rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
321 rtlusb->usb_rx_segregate_hdl =
322 rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
324 pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
325 rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
326 init_usb_anchor(&rtlusb->rx_submitted);
330 static int _rtl_usb_init(struct ieee80211_hw *hw)
332 struct rtl_priv *rtlpriv = rtl_priv(hw);
333 struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
334 struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
337 struct usb_interface *usb_intf = rtlusb->intf;
338 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
340 rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
341 for (epidx = 0; epidx < epnums; epidx++) {
342 struct usb_endpoint_descriptor *pep_desc;
343 pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
345 if (usb_endpoint_dir_in(pep_desc))
346 rtlusb->in_ep_nums++;
347 else if (usb_endpoint_dir_out(pep_desc))
348 rtlusb->out_ep_nums++;
350 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
351 "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
352 pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
353 pep_desc->bInterval);
355 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
356 pr_err("Too few input end points found\n");
359 if (rtlusb->out_ep_nums == 0) {
360 pr_err("No output end points found\n");
363 /* usb endpoint mapping */
364 err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
365 rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
366 _rtl_usb_init_tx(hw);
367 _rtl_usb_init_rx(hw);
371 static void rtl_usb_init_sw(struct ieee80211_hw *hw)
373 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
374 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
375 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
376 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
379 ppsc->inactiveps = false;
380 ppsc->leisure_ps = false;
381 ppsc->fwctrl_lps = false;
382 ppsc->reg_fwctrl_lps = 3;
383 ppsc->reg_max_lps_awakeintvl = 5;
384 ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
387 mac->beacon_interval = 100;
390 mac->min_space_cfg = 0;
391 mac->max_mss_density = 0;
393 /* set sane AMPDU defaults */
394 mac->current_ampdu_density = 7;
395 mac->current_ampdu_factor = 3;
398 rtlusb->acm_method = eAcmWay2_SW;
401 /* HIMR - turn all on */
402 rtlusb->irq_mask[0] = 0xFFFFFFFF;
403 /* HIMR_EX - turn all on */
404 rtlusb->irq_mask[1] = 0xFFFFFFFF;
405 rtlusb->disableHWSM = true;
408 #define __RADIO_TAP_SIZE_RSV 32
410 static void _rtl_rx_completed(struct urb *urb);
412 static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
413 struct rtl_usb *rtlusb,
418 struct rtl_priv *rtlpriv = rtl_priv(hw);
420 skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
423 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
424 "Failed to __dev_alloc_skb!!\n");
425 return ERR_PTR(-ENOMEM);
428 /* reserve some space for mac80211's radiotap */
429 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
430 usb_fill_bulk_urb(urb, rtlusb->udev,
431 usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
432 skb->data, min(skb_tailroom(skb),
433 (int)rtlusb->rx_max_size),
434 _rtl_rx_completed, skb);
436 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
440 #undef __RADIO_TAP_SIZE_RSV
442 static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
445 struct rtl_priv *rtlpriv = rtl_priv(hw);
446 u8 *rxdesc = skb->data;
447 struct ieee80211_hdr *hdr;
448 bool unicast = false;
450 struct ieee80211_rx_status rx_status = {0};
451 struct rtl_stats stats = {
457 skb_pull(skb, RTL_RX_DESC_SIZE);
458 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
459 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
460 hdr = (struct ieee80211_hdr *)(skb->data);
461 fc = hdr->frame_control;
463 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
465 if (is_broadcast_ether_addr(hdr->addr1)) {
467 } else if (is_multicast_ether_addr(hdr->addr1)) {
471 rtlpriv->stats.rxbytesunicast += skb->len;
474 rtl_is_special_data(hw, skb, false);
476 if (ieee80211_is_data(fc)) {
477 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
480 rtlpriv->link_info.num_rx_inperiod++;
485 static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
488 struct rtl_priv *rtlpriv = rtl_priv(hw);
489 u8 *rxdesc = skb->data;
490 struct ieee80211_hdr *hdr;
491 bool unicast = false;
493 struct ieee80211_rx_status rx_status = {0};
494 struct rtl_stats stats = {
500 skb_pull(skb, RTL_RX_DESC_SIZE);
501 rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
502 skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
503 hdr = (struct ieee80211_hdr *)(skb->data);
504 fc = hdr->frame_control;
506 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
508 if (is_broadcast_ether_addr(hdr->addr1)) {
510 } else if (is_multicast_ether_addr(hdr->addr1)) {
514 rtlpriv->stats.rxbytesunicast += skb->len;
517 rtl_is_special_data(hw, skb, false);
519 if (ieee80211_is_data(fc)) {
520 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
523 rtlpriv->link_info.num_rx_inperiod++;
525 if (likely(rtl_action_proc(hw, skb, false))) {
526 struct sk_buff *uskb = NULL;
529 uskb = dev_alloc_skb(skb->len + 128);
530 if (uskb) { /* drop packet on allocation failure */
531 memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
533 pdata = (u8 *)skb_put(uskb, skb->len);
534 memcpy(pdata, skb->data, skb->len);
535 ieee80211_rx_irqsafe(hw, uskb);
537 dev_kfree_skb_any(skb);
539 dev_kfree_skb_any(skb);
544 static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
546 struct sk_buff *_skb;
547 struct sk_buff_head rx_queue;
548 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
550 skb_queue_head_init(&rx_queue);
551 if (rtlusb->usb_rx_segregate_hdl)
552 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
553 WARN_ON(skb_queue_empty(&rx_queue));
554 while (!skb_queue_empty(&rx_queue)) {
555 _skb = skb_dequeue(&rx_queue);
556 _rtl_usb_rx_process_agg(hw, _skb);
557 ieee80211_rx_irqsafe(hw, _skb);
561 static void _rtl_rx_completed(struct urb *_urb)
563 struct sk_buff *skb = (struct sk_buff *)_urb->context;
564 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
565 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
566 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
567 struct rtl_priv *rtlpriv = rtl_priv(hw);
570 if (unlikely(IS_USB_STOP(rtlusb)))
573 if (likely(0 == _urb->status)) {
574 /* If this code were moved to work queue, would CPU
575 * utilization be improved? NOTE: We shall allocate another skb
576 * and reuse the original one.
578 skb_put(skb, _urb->actual_length);
580 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
581 struct sk_buff *_skb;
582 _rtl_usb_rx_process_noagg(hw, skb);
583 _skb = _rtl_prep_rx_urb(hw, rtlusb, _urb, GFP_ATOMIC);
586 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
587 "Can't allocate skb for bulk IN!\n");
593 _rtl_rx_pre_process(hw, skb);
594 pr_err("rx agg not supported\n");
599 switch (_urb->status) {
611 skb_reset_tail_pointer(skb);
614 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
615 err = usb_submit_urb(_urb, GFP_ATOMIC);
617 usb_unanchor_urb(_urb);
623 dev_kfree_skb_irq(skb);
626 static int _rtl_usb_receive(struct ieee80211_hw *hw)
632 struct rtl_priv *rtlpriv = rtl_priv(hw);
633 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
635 WARN_ON(0 == rtlusb->rx_urb_num);
636 /* 1600 == 1514 + max WLAN header + rtk info */
637 WARN_ON(rtlusb->rx_max_size < 1600);
639 for (i = 0; i < rtlusb->rx_urb_num; i++) {
641 urb = usb_alloc_urb(0, GFP_KERNEL);
643 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
644 "Failed to alloc URB!!\n");
648 skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
650 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
651 "Failed to prep_rx_urb!!\n");
657 usb_anchor_urb(urb, &rtlusb->rx_submitted);
658 err = usb_submit_urb(urb, GFP_KERNEL);
666 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
670 static int rtl_usb_start(struct ieee80211_hw *hw)
673 struct rtl_priv *rtlpriv = rtl_priv(hw);
674 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
675 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
677 err = rtlpriv->cfg->ops->hw_init(hw);
679 rtl_init_rx_config(hw);
681 /* Enable software */
682 SET_USB_START(rtlusb);
683 /* should after adapter start and interrupt enable. */
684 set_hal_start(rtlhal);
687 err = _rtl_usb_receive(hw);
697 /*======================= tx =========================================*/
698 static void rtl_usb_cleanup(struct ieee80211_hw *hw)
701 struct sk_buff *_skb;
702 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
703 struct ieee80211_tx_info *txinfo;
705 SET_USB_STOP(rtlusb);
707 /* clean up rx stuff. */
708 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
710 /* clean up tx stuff */
711 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
712 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
713 rtlusb->usb_tx_cleanup(hw, _skb);
714 txinfo = IEEE80211_SKB_CB(_skb);
715 ieee80211_tx_info_clear_status(txinfo);
716 txinfo->flags |= IEEE80211_TX_STAT_ACK;
717 ieee80211_tx_status_irqsafe(hw, _skb);
719 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
721 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
726 * We may add some struct into struct rtl_usb later. Do deinit here.
729 static void rtl_usb_deinit(struct ieee80211_hw *hw)
734 static void rtl_usb_stop(struct ieee80211_hw *hw)
736 struct rtl_priv *rtlpriv = rtl_priv(hw);
737 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
738 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
740 /* should after adapter start and interrupt enable. */
741 set_hal_stop(rtlhal);
742 /* Enable software */
743 SET_USB_STOP(rtlusb);
745 rtlpriv->cfg->ops->hw_disable(hw);
748 static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
751 struct rtl_priv *rtlpriv = rtl_priv(hw);
752 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
754 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
755 err = usb_submit_urb(_urb, GFP_ATOMIC);
759 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
760 "Failed to submit urb\n");
761 usb_unanchor_urb(_urb);
762 skb = (struct sk_buff *)_urb->context;
768 static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
771 struct rtl_priv *rtlpriv = rtl_priv(hw);
772 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
773 struct ieee80211_tx_info *txinfo;
775 rtlusb->usb_tx_post_hdl(hw, urb, skb);
776 skb_pull(skb, RTL_TX_HEADER_SIZE);
777 txinfo = IEEE80211_SKB_CB(skb);
778 ieee80211_tx_info_clear_status(txinfo);
779 txinfo->flags |= IEEE80211_TX_STAT_ACK;
782 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
783 "Urb has error status 0x%X\n", urb->status);
786 /* TODO: statistics */
788 ieee80211_tx_status_irqsafe(hw, skb);
792 static void _rtl_tx_complete(struct urb *urb)
794 struct sk_buff *skb = (struct sk_buff *)urb->context;
795 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
796 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
797 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
800 if (unlikely(IS_USB_STOP(rtlusb)))
802 err = _usb_tx_post(hw, urb, skb);
804 /* Ignore error and keep issuiing other urbs */
809 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
810 struct sk_buff *skb, u32 ep_num)
812 struct rtl_priv *rtlpriv = rtl_priv(hw);
813 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
816 WARN_ON(NULL == skb);
817 _urb = usb_alloc_urb(0, GFP_ATOMIC);
819 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
820 "Can't allocate URB for bulk out!\n");
824 _rtl_install_trx_info(rtlusb, skb, ep_num);
825 usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
826 ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
827 _urb->transfer_flags |= URB_ZERO_PACKET;
831 static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
834 struct rtl_priv *rtlpriv = rtl_priv(hw);
835 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
837 struct urb *_urb = NULL;
838 struct sk_buff *_skb = NULL;
840 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
841 if (unlikely(IS_USB_STOP(rtlusb))) {
842 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
843 "USB device is stopping...\n");
847 ep_num = rtlusb->ep_map.ep_mapping[qnum];
849 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
850 if (unlikely(!_urb)) {
851 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
852 "Can't allocate urb. Drop skb!\n");
855 _rtl_submit_tx_urb(hw, _urb);
858 static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
859 struct ieee80211_sta *sta,
863 struct rtl_priv *rtlpriv = rtl_priv(hw);
864 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
865 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
866 struct rtl_tx_desc *pdesc = NULL;
867 struct rtl_tcb_desc tcb_desc;
868 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
869 __le16 fc = hdr->frame_control;
870 u8 *pda_addr = hdr->addr1;
876 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
877 if (ieee80211_is_auth(fc)) {
878 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
882 if (rtlpriv->psc.sw_ps_enabled) {
883 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
884 !ieee80211_has_pm(fc))
885 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
888 rtl_action_proc(hw, skb, true);
889 if (is_multicast_ether_addr(pda_addr))
890 rtlpriv->stats.txbytesmulticast += skb->len;
891 else if (is_broadcast_ether_addr(pda_addr))
892 rtlpriv->stats.txbytesbroadcast += skb->len;
894 rtlpriv->stats.txbytesunicast += skb->len;
895 if (ieee80211_is_data_qos(fc)) {
896 qc = ieee80211_get_qos_ctl(hdr);
897 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
898 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
899 IEEE80211_SCTL_SEQ) >> 4;
903 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, info, sta, skb,
904 hw_queue, &tcb_desc);
905 if (!ieee80211_has_morefrags(hdr->frame_control)) {
907 mac->tids[tid].seq_number = seq_number;
909 if (ieee80211_is_data(fc))
910 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
913 static int rtl_usb_tx(struct ieee80211_hw *hw,
914 struct ieee80211_sta *sta,
916 struct rtl_tcb_desc *dummy)
918 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
919 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
920 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
921 __le16 fc = hdr->frame_control;
924 if (unlikely(is_hal_stop(rtlhal)))
926 hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
927 _rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
928 _rtl_usb_transmit(hw, skb, hw_queue);
932 dev_kfree_skb_any(skb);
936 static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
937 struct ieee80211_sta *sta,
943 static struct rtl_intf_ops rtl_usb_ops = {
944 .adapter_start = rtl_usb_start,
945 .adapter_stop = rtl_usb_stop,
946 .adapter_tx = rtl_usb_tx,
947 .waitq_insert = rtl_usb_tx_chk_waitq_insert,
950 int rtl_usb_probe(struct usb_interface *intf,
951 const struct usb_device_id *id,
952 struct rtl_hal_cfg *rtl_hal_cfg)
955 struct ieee80211_hw *hw = NULL;
956 struct rtl_priv *rtlpriv = NULL;
957 struct usb_device *udev;
958 struct rtl_usb_priv *usb_priv;
960 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
961 sizeof(struct rtl_usb_priv), &rtl_ops);
963 RT_ASSERT(false, "ieee80211 alloc failed\n");
967 rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
969 if (!rtlpriv->usb_data)
972 /* this spin lock must be initialized early */
973 spin_lock_init(&rtlpriv->locks.usb_lock);
975 rtlpriv->usb_data_index = 0;
976 init_completion(&rtlpriv->firmware_loading_complete);
977 SET_IEEE80211_DEV(hw, &intf->dev);
978 udev = interface_to_usbdev(intf);
980 usb_priv = rtl_usbpriv(hw);
981 memset(usb_priv, 0, sizeof(*usb_priv));
982 usb_priv->dev.intf = intf;
983 usb_priv->dev.udev = udev;
984 usb_set_intfdata(intf, hw);
985 /* init cfg & intf_ops */
986 rtlpriv->rtlhal.interface = INTF_USB;
987 rtlpriv->cfg = rtl_hal_cfg;
988 rtlpriv->intf_ops = &rtl_usb_ops;
989 rtl_dbgp_flag_init(hw);
990 /* Init IO handler */
991 _rtl_usb_io_handler_init(&udev->dev, hw);
992 rtlpriv->cfg->ops->read_chip_version(hw);
993 /*like read eeprom and so on */
994 rtlpriv->cfg->ops->read_eeprom_info(hw);
995 err = _rtl_usb_init(hw);
999 /* Init mac80211 sw */
1000 err = rtl_init_core(hw);
1002 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1003 "Can't allocate sw for mac80211\n");
1006 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
1007 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
1010 rtlpriv->cfg->ops->init_sw_leds(hw);
1014 rtl_deinit_core(hw);
1015 _rtl_usb_io_handler_release(hw);
1017 complete(&rtlpriv->firmware_loading_complete);
1020 EXPORT_SYMBOL(rtl_usb_probe);
1022 void rtl_usb_disconnect(struct usb_interface *intf)
1024 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1025 struct rtl_priv *rtlpriv = rtl_priv(hw);
1026 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1027 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1029 if (unlikely(!rtlpriv))
1032 /* just in case driver is removed before firmware callback */
1033 wait_for_completion(&rtlpriv->firmware_loading_complete);
1034 /*ieee80211_unregister_hw will call ops_stop */
1035 if (rtlmac->mac80211_registered == 1) {
1036 ieee80211_unregister_hw(hw);
1037 rtlmac->mac80211_registered = 0;
1039 rtl_deinit_deferred_work(hw);
1040 rtlpriv->intf_ops->adapter_stop(hw);
1043 /* rtl_deinit_rfkill(hw); */
1045 rtl_deinit_core(hw);
1046 kfree(rtlpriv->usb_data);
1047 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1048 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1049 _rtl_usb_io_handler_release(hw);
1050 usb_put_dev(rtlusb->udev);
1051 usb_set_intfdata(intf, NULL);
1052 ieee80211_free_hw(hw);
1054 EXPORT_SYMBOL(rtl_usb_disconnect);
1056 int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1060 EXPORT_SYMBOL(rtl_usb_suspend);
1062 int rtl_usb_resume(struct usb_interface *pusb_intf)
1066 EXPORT_SYMBOL(rtl_usb_resume);