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>
35 #include <linux/module.h>
37 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
38 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
39 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
40 MODULE_LICENSE("GPL");
41 MODULE_DESCRIPTION("USB basic driver for rtlwifi");
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
48 #define MAX_USBCTRL_VENDORREQ_TIMES 10
50 static void usbctrl_async_callback(struct urb *urb)
54 kfree(urb->setup_packet);
56 kfree(urb->transfer_buffer);
60 static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
61 u16 value, u16 index, void *pdata,
67 struct usb_ctrlrequest *dr;
69 const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
72 if (WARN_ON_ONCE(len > databuf_maxlen))
75 pipe = usb_sndctrlpipe(udev, 0); /* write_out */
76 reqtype = REALTEK_USB_VENQT_WRITE;
78 dr = kzalloc(sizeof(*dr), GFP_ATOMIC);
82 databuf = kzalloc(databuf_maxlen, GFP_ATOMIC);
88 urb = usb_alloc_urb(0, GFP_ATOMIC);
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);
114 static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
115 u16 value, u16 index, void *pdata,
121 int vendorreq_times = 0;
124 pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
125 reqtype = REALTEK_USB_VENQT_READ;
128 status = usb_control_msg(udev, pipe, request, reqtype, value,
129 index, pdata, len, 1000);
131 /* firmware download is checksumed, don't retry */
132 if ((value >= FW_8192C_START_ADDRESS &&
133 value <= FW_8192C_END_ADDRESS))
138 } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
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);
146 static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
148 struct device *dev = rtlpriv->io.dev;
149 struct usb_device *udev = to_usb_device(dev);
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 */
165 _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
166 return le32_to_cpu(*data);
169 static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
171 return (u8)_usb_read_sync(rtlpriv, addr, 1);
174 static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
176 return (u16)_usb_read_sync(rtlpriv, addr, 2);
179 static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
181 return _usb_read_sync(rtlpriv, addr, 4);
184 static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
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,
200 static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
202 struct device *dev = rtlpriv->io.dev;
204 _usb_write_async(to_usb_device(dev), addr, val, 1);
207 static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
209 struct device *dev = rtlpriv->io.dev;
211 _usb_write_async(to_usb_device(dev), addr, val, 2);
214 static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
216 struct device *dev = rtlpriv->io.dev;
218 _usb_write_async(to_usb_device(dev), addr, val, 4);
221 static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
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;
229 u16 index = REALTEK_USB_VENQT_CMD_IDX;
230 int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
233 wvalue = (u16)(addr & 0x0000ffff);
234 buffer = kmemdup(data, len, GFP_ATOMIC);
237 usb_control_msg(udev, pipe, request, reqtype, wvalue,
238 index, buffer, len, 50);
243 static void _rtl_usb_io_handler_init(struct device *dev,
244 struct ieee80211_hw *hw)
246 struct rtl_priv *rtlpriv = rtl_priv(hw);
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;
259 static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
261 struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
263 mutex_destroy(&rtlpriv->io.bb_mutex);
268 * Default aggregation handler. Do nothing and just return the oldest skb.
270 static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
271 struct sk_buff_head *list)
273 return skb_dequeue(list);
276 #define IS_HIGH_SPEED_USB(udev) \
277 ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
279 static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
282 struct rtl_priv *rtlpriv = rtl_priv(hw);
283 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
285 rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
286 ? USB_HIGH_SPEED_BULK_SIZE
287 : USB_FULL_SPEED_BULK_SIZE;
289 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
290 rtlusb->max_bulk_out_size);
292 for (i = 0; i < __RTL_TXQ_NUM; i++) {
293 u32 ep_num = rtlusb->ep_map.ep_mapping[i];
295 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
296 "Invalid endpoint map setting!\n");
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;
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]);
318 static void _rtl_rx_work(unsigned long param);
320 static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
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);
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;
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);
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;
345 static int _rtl_usb_init(struct ieee80211_hw *hw)
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);
352 struct usb_interface *usb_intf = rtlusb->intf;
353 u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
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;
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++;
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);
370 if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
371 pr_err("Too few input end points found\n");
374 if (rtlusb->out_ep_nums == 0) {
375 pr_err("No output end points found\n");
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);
386 static void rtl_usb_init_sw(struct ieee80211_hw *hw)
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));
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;
402 mac->beacon_interval = 100;
405 mac->min_space_cfg = 0;
406 mac->max_mss_density = 0;
408 /* set sane AMPDU defaults */
409 mac->current_ampdu_density = 7;
410 mac->current_ampdu_factor = 3;
413 rtlusb->acm_method = EACMWAY2_SW;
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;
423 static void _rtl_rx_completed(struct urb *urb);
425 static int _rtl_prep_rx_urb(struct ieee80211_hw *hw, struct rtl_usb *rtlusb,
426 struct urb *urb, gfp_t gfp_mask)
428 struct rtl_priv *rtlpriv = rtl_priv(hw);
431 buf = usb_alloc_coherent(rtlusb->udev, rtlusb->rx_max_size, gfp_mask,
434 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
435 "Failed to usb_alloc_coherent!!\n");
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;
447 static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
450 struct rtl_priv *rtlpriv = rtl_priv(hw);
451 u8 *rxdesc = skb->data;
452 struct ieee80211_hdr *hdr;
453 bool unicast = false;
455 struct ieee80211_rx_status rx_status = {0};
456 struct rtl_stats stats = {
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;
467 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
469 if (is_broadcast_ether_addr(hdr->addr1)) {
471 } else if (is_multicast_ether_addr(hdr->addr1)) {
475 rtlpriv->stats.rxbytesunicast += skb->len;
478 if (ieee80211_is_data(fc)) {
479 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
482 rtlpriv->link_info.num_rx_inperiod++;
484 /* static bcn for roaming */
485 rtl_beacon_statistic(hw, skb);
489 static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
492 struct rtl_priv *rtlpriv = rtl_priv(hw);
493 u8 *rxdesc = skb->data;
494 struct ieee80211_hdr *hdr;
495 bool unicast = false;
497 struct ieee80211_rx_status rx_status = {0};
498 struct rtl_stats stats = {
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;
509 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
511 if (is_broadcast_ether_addr(hdr->addr1)) {
513 } else if (is_multicast_ether_addr(hdr->addr1)) {
517 rtlpriv->stats.rxbytesunicast += skb->len;
520 if (ieee80211_is_data(fc)) {
521 rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
524 rtlpriv->link_info.num_rx_inperiod++;
527 /* static bcn for roaming */
528 rtl_beacon_statistic(hw, skb);
530 if (likely(rtl_action_proc(hw, skb, false)))
531 ieee80211_rx(hw, skb);
533 dev_kfree_skb_any(skb);
535 dev_kfree_skb_any(skb);
539 static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
541 struct sk_buff *_skb;
542 struct sk_buff_head rx_queue;
543 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
545 skb_queue_head_init(&rx_queue);
546 if (rtlusb->usb_rx_segregate_hdl)
547 rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
548 WARN_ON(skb_queue_empty(&rx_queue));
549 while (!skb_queue_empty(&rx_queue)) {
550 _skb = skb_dequeue(&rx_queue);
551 _rtl_usb_rx_process_agg(hw, _skb);
552 ieee80211_rx(hw, _skb);
556 #define __RX_SKB_MAX_QUEUED 64
558 static void _rtl_rx_work(unsigned long param)
560 struct rtl_usb *rtlusb = (struct rtl_usb *)param;
561 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
564 while ((skb = skb_dequeue(&rtlusb->rx_queue))) {
565 if (unlikely(IS_USB_STOP(rtlusb))) {
566 dev_kfree_skb_any(skb);
570 if (likely(!rtlusb->usb_rx_segregate_hdl)) {
571 _rtl_usb_rx_process_noagg(hw, skb);
574 _rtl_rx_pre_process(hw, skb);
575 pr_err("rx agg not supported\n");
580 static unsigned int _rtl_rx_get_padding(struct ieee80211_hdr *hdr,
583 #if NET_IP_ALIGN != 0
584 unsigned int padding = 0;
587 /* make function no-op when possible */
588 if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
591 #if NET_IP_ALIGN != 0
592 /* alignment calculation as in lbtf_rx() / carl9170_rx_copy_data() */
593 /* TODO: deduplicate common code, define helper function instead? */
595 if (ieee80211_is_data_qos(hdr->frame_control)) {
596 u8 *qc = ieee80211_get_qos_ctl(hdr);
598 padding ^= NET_IP_ALIGN;
600 /* Input might be invalid, avoid accessing memory outside
603 if ((unsigned long)qc - (unsigned long)hdr < len &&
604 *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
605 padding ^= NET_IP_ALIGN;
608 if (ieee80211_has_a4(hdr->frame_control))
609 padding ^= NET_IP_ALIGN;
615 #define __RADIO_TAP_SIZE_RSV 32
617 static void _rtl_rx_completed(struct urb *_urb)
619 struct rtl_usb *rtlusb = (struct rtl_usb *)_urb->context;
620 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
621 struct rtl_priv *rtlpriv = rtl_priv(hw);
624 if (unlikely(IS_USB_STOP(rtlusb)))
627 if (likely(0 == _urb->status)) {
628 unsigned int padding;
631 unsigned int size = _urb->actual_length;
632 struct ieee80211_hdr *hdr;
634 if (size < RTL_RX_DESC_SIZE + sizeof(struct ieee80211_hdr)) {
635 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
636 "Too short packet from bulk IN! (len: %d)\n",
641 qlen = skb_queue_len(&rtlusb->rx_queue);
642 if (qlen >= __RX_SKB_MAX_QUEUED) {
643 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
644 "Pending RX skbuff queue full! (qlen: %d)\n",
649 hdr = (void *)(_urb->transfer_buffer + RTL_RX_DESC_SIZE);
650 padding = _rtl_rx_get_padding(hdr, size - RTL_RX_DESC_SIZE);
652 skb = dev_alloc_skb(size + __RADIO_TAP_SIZE_RSV + padding);
654 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
655 "Can't allocate skb for bulk IN!\n");
659 _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
661 /* Make sure the payload data is 4 byte aligned. */
662 skb_reserve(skb, padding);
664 /* reserve some space for mac80211's radiotap */
665 skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
667 memcpy(skb_put(skb, size), _urb->transfer_buffer, size);
669 skb_queue_tail(&rtlusb->rx_queue, skb);
670 tasklet_schedule(&rtlusb->rx_work_tasklet);
675 switch (_urb->status) {
687 usb_anchor_urb(_urb, &rtlusb->rx_submitted);
688 err = usb_submit_urb(_urb, GFP_ATOMIC);
690 usb_unanchor_urb(_urb);
696 /* On some architectures, usb_free_coherent must not be called from
697 * hardirq context. Queue urb to cleanup list.
699 usb_anchor_urb(_urb, &rtlusb->rx_cleanup_urbs);
702 #undef __RADIO_TAP_SIZE_RSV
704 static void _rtl_usb_cleanup_rx(struct ieee80211_hw *hw)
706 struct rtl_priv *rtlpriv = rtl_priv(hw);
707 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
710 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
712 tasklet_kill(&rtlusb->rx_work_tasklet);
713 cancel_work_sync(&rtlpriv->works.lps_change_work);
715 flush_workqueue(rtlpriv->works.rtl_wq);
716 destroy_workqueue(rtlpriv->works.rtl_wq);
718 skb_queue_purge(&rtlusb->rx_queue);
720 while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
721 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
722 urb->transfer_buffer, urb->transfer_dma);
727 static int _rtl_usb_receive(struct ieee80211_hw *hw)
732 struct rtl_priv *rtlpriv = rtl_priv(hw);
733 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
735 WARN_ON(0 == rtlusb->rx_urb_num);
736 /* 1600 == 1514 + max WLAN header + rtk info */
737 WARN_ON(rtlusb->rx_max_size < 1600);
739 for (i = 0; i < rtlusb->rx_urb_num; i++) {
741 urb = usb_alloc_urb(0, GFP_KERNEL);
743 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
744 "Failed to alloc URB!!\n");
748 err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
750 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
751 "Failed to prep_rx_urb!!\n");
756 usb_anchor_urb(urb, &rtlusb->rx_submitted);
757 err = usb_submit_urb(urb, GFP_KERNEL);
759 usb_unanchor_urb(urb);
768 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
769 _rtl_usb_cleanup_rx(hw);
773 static int rtl_usb_start(struct ieee80211_hw *hw)
776 struct rtl_priv *rtlpriv = rtl_priv(hw);
777 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
778 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
780 err = rtlpriv->cfg->ops->hw_init(hw);
782 rtl_init_rx_config(hw);
784 /* Enable software */
785 SET_USB_START(rtlusb);
786 /* should after adapter start and interrupt enable. */
787 set_hal_start(rtlhal);
790 err = _rtl_usb_receive(hw);
800 /*======================= tx =========================================*/
801 static void rtl_usb_cleanup(struct ieee80211_hw *hw)
804 struct sk_buff *_skb;
805 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
806 struct ieee80211_tx_info *txinfo;
808 /* clean up rx stuff. */
809 _rtl_usb_cleanup_rx(hw);
811 /* clean up tx stuff */
812 for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
813 while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
814 rtlusb->usb_tx_cleanup(hw, _skb);
815 txinfo = IEEE80211_SKB_CB(_skb);
816 ieee80211_tx_info_clear_status(txinfo);
817 txinfo->flags |= IEEE80211_TX_STAT_ACK;
818 ieee80211_tx_status_irqsafe(hw, _skb);
820 usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
822 usb_kill_anchored_urbs(&rtlusb->tx_submitted);
827 * We may add some struct into struct rtl_usb later. Do deinit here.
830 static void rtl_usb_deinit(struct ieee80211_hw *hw)
835 static void rtl_usb_stop(struct ieee80211_hw *hw)
837 struct rtl_priv *rtlpriv = rtl_priv(hw);
838 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
839 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
842 /* should after adapter start and interrupt enable. */
843 set_hal_stop(rtlhal);
844 cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
845 /* Enable software */
846 SET_USB_STOP(rtlusb);
848 /* free pre-allocated URBs from rtl_usb_start() */
849 usb_kill_anchored_urbs(&rtlusb->rx_submitted);
851 tasklet_kill(&rtlusb->rx_work_tasklet);
852 cancel_work_sync(&rtlpriv->works.lps_change_work);
854 flush_workqueue(rtlpriv->works.rtl_wq);
856 skb_queue_purge(&rtlusb->rx_queue);
858 while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
859 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
860 urb->transfer_buffer, urb->transfer_dma);
864 rtlpriv->cfg->ops->hw_disable(hw);
867 static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
870 struct rtl_priv *rtlpriv = rtl_priv(hw);
871 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
873 usb_anchor_urb(_urb, &rtlusb->tx_submitted);
874 err = usb_submit_urb(_urb, GFP_ATOMIC);
878 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
879 "Failed to submit urb\n");
880 usb_unanchor_urb(_urb);
881 skb = (struct sk_buff *)_urb->context;
887 static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
890 struct rtl_priv *rtlpriv = rtl_priv(hw);
891 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
892 struct ieee80211_tx_info *txinfo;
894 rtlusb->usb_tx_post_hdl(hw, urb, skb);
895 skb_pull(skb, RTL_TX_HEADER_SIZE);
896 txinfo = IEEE80211_SKB_CB(skb);
897 ieee80211_tx_info_clear_status(txinfo);
898 txinfo->flags |= IEEE80211_TX_STAT_ACK;
901 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
902 "Urb has error status 0x%X\n", urb->status);
905 /* TODO: statistics */
907 ieee80211_tx_status_irqsafe(hw, skb);
911 static void _rtl_tx_complete(struct urb *urb)
913 struct sk_buff *skb = (struct sk_buff *)urb->context;
914 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
915 struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
916 struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
919 if (unlikely(IS_USB_STOP(rtlusb)))
921 err = _usb_tx_post(hw, urb, skb);
923 /* Ignore error and keep issuiing other urbs */
928 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
929 struct sk_buff *skb, u32 ep_num)
931 struct rtl_priv *rtlpriv = rtl_priv(hw);
932 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
935 WARN_ON(NULL == skb);
936 _urb = usb_alloc_urb(0, GFP_ATOMIC);
938 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
939 "Can't allocate URB for bulk out!\n");
943 _rtl_install_trx_info(rtlusb, skb, ep_num);
944 usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
945 ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
946 _urb->transfer_flags |= URB_ZERO_PACKET;
950 static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
953 struct rtl_priv *rtlpriv = rtl_priv(hw);
954 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
956 struct urb *_urb = NULL;
957 struct sk_buff *_skb = NULL;
959 WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
960 if (unlikely(IS_USB_STOP(rtlusb))) {
961 RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
962 "USB device is stopping...\n");
966 ep_num = rtlusb->ep_map.ep_mapping[qnum];
968 _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
969 if (unlikely(!_urb)) {
970 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
971 "Can't allocate urb. Drop skb!\n");
975 _rtl_submit_tx_urb(hw, _urb);
978 static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
979 struct ieee80211_sta *sta,
983 struct rtl_priv *rtlpriv = rtl_priv(hw);
984 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
985 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
986 struct rtl_tx_desc *pdesc = NULL;
987 struct rtl_tcb_desc tcb_desc;
988 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
989 __le16 fc = hdr->frame_control;
990 u8 *pda_addr = hdr->addr1;
996 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
997 if (ieee80211_is_auth(fc)) {
998 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
1002 if (rtlpriv->psc.sw_ps_enabled) {
1003 if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
1004 !ieee80211_has_pm(fc))
1005 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
1008 rtl_action_proc(hw, skb, true);
1009 if (is_multicast_ether_addr(pda_addr))
1010 rtlpriv->stats.txbytesmulticast += skb->len;
1011 else if (is_broadcast_ether_addr(pda_addr))
1012 rtlpriv->stats.txbytesbroadcast += skb->len;
1014 rtlpriv->stats.txbytesunicast += skb->len;
1015 if (ieee80211_is_data_qos(fc)) {
1016 qc = ieee80211_get_qos_ctl(hdr);
1017 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
1018 seq_number = (le16_to_cpu(hdr->seq_ctrl) &
1019 IEEE80211_SCTL_SEQ) >> 4;
1023 rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
1024 hw_queue, &tcb_desc);
1025 if (!ieee80211_has_morefrags(hdr->frame_control)) {
1027 mac->tids[tid].seq_number = seq_number;
1029 if (ieee80211_is_data(fc))
1030 rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
1033 static int rtl_usb_tx(struct ieee80211_hw *hw,
1034 struct ieee80211_sta *sta,
1035 struct sk_buff *skb,
1036 struct rtl_tcb_desc *dummy)
1038 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1039 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1040 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
1041 __le16 fc = hdr->frame_control;
1044 if (unlikely(is_hal_stop(rtlhal)))
1046 hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
1047 _rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
1048 _rtl_usb_transmit(hw, skb, hw_queue);
1049 return NETDEV_TX_OK;
1052 dev_kfree_skb_any(skb);
1053 return NETDEV_TX_OK;
1056 static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
1057 struct ieee80211_sta *sta,
1058 struct sk_buff *skb)
1063 static void rtl_fill_h2c_cmd_work_callback(struct work_struct *work)
1065 struct rtl_works *rtlworks =
1066 container_of(work, struct rtl_works, fill_h2c_cmd);
1067 struct ieee80211_hw *hw = rtlworks->hw;
1068 struct rtl_priv *rtlpriv = rtl_priv(hw);
1070 rtlpriv->cfg->ops->fill_h2c_cmd(hw, H2C_RA_MASK, 5, rtlpriv->rate_mask);
1073 static struct rtl_intf_ops rtl_usb_ops = {
1074 .adapter_start = rtl_usb_start,
1075 .adapter_stop = rtl_usb_stop,
1076 .adapter_tx = rtl_usb_tx,
1077 .waitq_insert = rtl_usb_tx_chk_waitq_insert,
1080 int rtl_usb_probe(struct usb_interface *intf,
1081 const struct usb_device_id *id,
1082 struct rtl_hal_cfg *rtl_hal_cfg)
1085 struct ieee80211_hw *hw = NULL;
1086 struct rtl_priv *rtlpriv = NULL;
1087 struct usb_device *udev;
1088 struct rtl_usb_priv *usb_priv;
1090 hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
1091 sizeof(struct rtl_usb_priv), &rtl_ops);
1093 RT_ASSERT(false, "ieee80211 alloc failed\n");
1098 rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
1100 if (!rtlpriv->usb_data) {
1101 ieee80211_free_hw(hw);
1105 /* this spin lock must be initialized early */
1106 spin_lock_init(&rtlpriv->locks.usb_lock);
1107 INIT_WORK(&rtlpriv->works.fill_h2c_cmd,
1108 rtl_fill_h2c_cmd_work_callback);
1109 INIT_WORK(&rtlpriv->works.lps_change_work,
1110 rtl_lps_change_work_callback);
1112 rtlpriv->usb_data_index = 0;
1113 init_completion(&rtlpriv->firmware_loading_complete);
1114 SET_IEEE80211_DEV(hw, &intf->dev);
1115 udev = interface_to_usbdev(intf);
1117 usb_priv = rtl_usbpriv(hw);
1118 memset(usb_priv, 0, sizeof(*usb_priv));
1119 usb_priv->dev.intf = intf;
1120 usb_priv->dev.udev = udev;
1121 usb_set_intfdata(intf, hw);
1122 /* init cfg & intf_ops */
1123 rtlpriv->rtlhal.interface = INTF_USB;
1124 rtlpriv->cfg = rtl_hal_cfg;
1125 rtlpriv->intf_ops = &rtl_usb_ops;
1126 rtl_dbgp_flag_init(hw);
1127 /* Init IO handler */
1128 _rtl_usb_io_handler_init(&udev->dev, hw);
1129 rtlpriv->cfg->ops->read_chip_version(hw);
1130 /*like read eeprom and so on */
1131 rtlpriv->cfg->ops->read_eeprom_info(hw);
1132 err = _rtl_usb_init(hw);
1135 rtl_usb_init_sw(hw);
1136 /* Init mac80211 sw */
1137 err = rtl_init_core(hw);
1139 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1140 "Can't allocate sw for mac80211\n");
1143 if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
1144 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
1147 rtlpriv->cfg->ops->init_sw_leds(hw);
1149 err = ieee80211_register_hw(hw);
1151 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1152 "Can't register mac80211 hw.\n");
1156 rtlpriv->mac80211.mac80211_registered = 1;
1158 set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
1162 rtl_deinit_core(hw);
1163 _rtl_usb_io_handler_release(hw);
1165 complete(&rtlpriv->firmware_loading_complete);
1166 kfree(rtlpriv->usb_data);
1169 EXPORT_SYMBOL(rtl_usb_probe);
1171 void rtl_usb_disconnect(struct usb_interface *intf)
1173 struct ieee80211_hw *hw = usb_get_intfdata(intf);
1174 struct rtl_priv *rtlpriv = rtl_priv(hw);
1175 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
1176 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
1178 if (unlikely(!rtlpriv))
1180 /* just in case driver is removed before firmware callback */
1181 wait_for_completion(&rtlpriv->firmware_loading_complete);
1182 clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
1183 /*ieee80211_unregister_hw will call ops_stop */
1184 if (rtlmac->mac80211_registered == 1) {
1185 ieee80211_unregister_hw(hw);
1186 rtlmac->mac80211_registered = 0;
1188 rtl_deinit_deferred_work(hw);
1189 rtlpriv->intf_ops->adapter_stop(hw);
1192 /* rtl_deinit_rfkill(hw); */
1194 rtl_deinit_core(hw);
1195 kfree(rtlpriv->usb_data);
1196 rtlpriv->cfg->ops->deinit_sw_leds(hw);
1197 rtlpriv->cfg->ops->deinit_sw_vars(hw);
1198 _rtl_usb_io_handler_release(hw);
1199 usb_put_dev(rtlusb->udev);
1200 usb_set_intfdata(intf, NULL);
1201 ieee80211_free_hw(hw);
1203 EXPORT_SYMBOL(rtl_usb_disconnect);
1205 int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
1209 EXPORT_SYMBOL(rtl_usb_suspend);
1211 int rtl_usb_resume(struct usb_interface *pusb_intf)
1215 EXPORT_SYMBOL(rtl_usb_resume);