+++ /dev/null
-/******************************************************************************
- *
- * Copyright(c) 2009-2012 Realtek Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * The full GNU General Public License is included in this distribution in the
- * file called LICENSE.
- *
- * Contact Information:
- * wlanfae <wlanfae@realtek.com>
- * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
- * Hsinchu 300, Taiwan.
- *
- *****************************************************************************/
-
-#include "wifi.h"
-#include "core.h"
-#include "usb.h"
-#include "base.h"
-#include "ps.h"
-#include "rtl8192c/fw_common.h"
-#include <linux/export.h>
-#include <linux/module.h>
-
-MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
-MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
-MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("USB basic driver for rtlwifi");
-
-#define REALTEK_USB_VENQT_READ 0xC0
-#define REALTEK_USB_VENQT_WRITE 0x40
-#define REALTEK_USB_VENQT_CMD_REQ 0x05
-#define REALTEK_USB_VENQT_CMD_IDX 0x00
-
-#define MAX_USBCTRL_VENDORREQ_TIMES 10
-
-static void usbctrl_async_callback(struct urb *urb)
-{
- if (urb) {
- /* free dr */
- kfree(urb->setup_packet);
- /* free databuf */
- kfree(urb->transfer_buffer);
- }
-}
-
-static int _usbctrl_vendorreq_async_write(struct usb_device *udev, u8 request,
- u16 value, u16 index, void *pdata,
- u16 len)
-{
- int rc;
- unsigned int pipe;
- u8 reqtype;
- struct usb_ctrlrequest *dr;
- struct urb *urb;
- const u16 databuf_maxlen = REALTEK_USB_VENQT_MAX_BUF_SIZE;
- u8 *databuf;
-
- if (WARN_ON_ONCE(len > databuf_maxlen))
- len = databuf_maxlen;
-
- pipe = usb_sndctrlpipe(udev, 0); /* write_out */
- reqtype = REALTEK_USB_VENQT_WRITE;
-
- dr = kzalloc(sizeof(*dr), GFP_ATOMIC);
- if (!dr)
- return -ENOMEM;
-
- databuf = kzalloc(databuf_maxlen, GFP_ATOMIC);
- if (!databuf) {
- kfree(dr);
- return -ENOMEM;
- }
-
- urb = usb_alloc_urb(0, GFP_ATOMIC);
- if (!urb) {
- kfree(databuf);
- kfree(dr);
- return -ENOMEM;
- }
-
- dr->bRequestType = reqtype;
- dr->bRequest = request;
- dr->wValue = cpu_to_le16(value);
- dr->wIndex = cpu_to_le16(index);
- dr->wLength = cpu_to_le16(len);
- /* data are already in little-endian order */
- memcpy(databuf, pdata, len);
- usb_fill_control_urb(urb, udev, pipe,
- (unsigned char *)dr, databuf, len,
- usbctrl_async_callback, NULL);
- rc = usb_submit_urb(urb, GFP_ATOMIC);
- if (rc < 0) {
- kfree(databuf);
- kfree(dr);
- }
- usb_free_urb(urb);
- return rc;
-}
-
-static int _usbctrl_vendorreq_sync_read(struct usb_device *udev, u8 request,
- u16 value, u16 index, void *pdata,
- u16 len)
-{
- unsigned int pipe;
- int status;
- u8 reqtype;
- int vendorreq_times = 0;
- static int count;
-
- pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
- reqtype = REALTEK_USB_VENQT_READ;
-
- do {
- status = usb_control_msg(udev, pipe, request, reqtype, value,
- index, pdata, len, 1000);
- if (status < 0) {
- /* firmware download is checksumed, don't retry */
- if ((value >= FW_8192C_START_ADDRESS &&
- value <= FW_8192C_END_ADDRESS))
- break;
- } else {
- break;
- }
- } while (++vendorreq_times < MAX_USBCTRL_VENDORREQ_TIMES);
-
- if (status < 0 && count++ < 4)
- pr_err("reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x\n",
- value, status, *(u32 *)pdata);
- return status;
-}
-
-static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
-{
- struct device *dev = rtlpriv->io.dev;
- struct usb_device *udev = to_usb_device(dev);
- u8 request;
- u16 wvalue;
- u16 index;
- __le32 *data;
- unsigned long flags;
-
- spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags);
- if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT)
- rtlpriv->usb_data_index = 0;
- data = &rtlpriv->usb_data[rtlpriv->usb_data_index];
- spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags);
- request = REALTEK_USB_VENQT_CMD_REQ;
- index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
-
- wvalue = (u16)addr;
- _usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
- return le32_to_cpu(*data);
-}
-
-static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
-{
- return (u8)_usb_read_sync(rtlpriv, addr, 1);
-}
-
-static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
-{
- return (u16)_usb_read_sync(rtlpriv, addr, 2);
-}
-
-static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
-{
- return _usb_read_sync(rtlpriv, addr, 4);
-}
-
-static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
- u16 len)
-{
- u8 request;
- u16 wvalue;
- u16 index;
- __le32 data;
-
- request = REALTEK_USB_VENQT_CMD_REQ;
- index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
- wvalue = (u16)(addr&0x0000ffff);
- data = cpu_to_le32(val);
- _usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
- len);
-}
-
-static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
-{
- struct device *dev = rtlpriv->io.dev;
-
- _usb_write_async(to_usb_device(dev), addr, val, 1);
-}
-
-static void _usb_write16_async(struct rtl_priv *rtlpriv, u32 addr, u16 val)
-{
- struct device *dev = rtlpriv->io.dev;
-
- _usb_write_async(to_usb_device(dev), addr, val, 2);
-}
-
-static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
-{
- struct device *dev = rtlpriv->io.dev;
-
- _usb_write_async(to_usb_device(dev), addr, val, 4);
-}
-
-static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
- u16 len)
-{
- struct device *dev = rtlpriv->io.dev;
- struct usb_device *udev = to_usb_device(dev);
- u8 request = REALTEK_USB_VENQT_CMD_REQ;
- u8 reqtype = REALTEK_USB_VENQT_WRITE;
- u16 wvalue;
- u16 index = REALTEK_USB_VENQT_CMD_IDX;
- int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
- u8 *buffer;
-
- wvalue = (u16)(addr & 0x0000ffff);
- buffer = kmemdup(data, len, GFP_ATOMIC);
- if (!buffer)
- return;
- usb_control_msg(udev, pipe, request, reqtype, wvalue,
- index, buffer, len, 50);
-
- kfree(buffer);
-}
-
-static void _rtl_usb_io_handler_init(struct device *dev,
- struct ieee80211_hw *hw)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
-
- rtlpriv->io.dev = dev;
- mutex_init(&rtlpriv->io.bb_mutex);
- rtlpriv->io.write8_async = _usb_write8_async;
- rtlpriv->io.write16_async = _usb_write16_async;
- rtlpriv->io.write32_async = _usb_write32_async;
- rtlpriv->io.read8_sync = _usb_read8_sync;
- rtlpriv->io.read16_sync = _usb_read16_sync;
- rtlpriv->io.read32_sync = _usb_read32_sync;
- rtlpriv->io.writeN_sync = _usb_writeN_sync;
-}
-
-static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
-{
- struct rtl_priv __maybe_unused *rtlpriv = rtl_priv(hw);
-
- mutex_destroy(&rtlpriv->io.bb_mutex);
-}
-
-/**
- *
- * Default aggregation handler. Do nothing and just return the oldest skb.
- */
-static struct sk_buff *_none_usb_tx_aggregate_hdl(struct ieee80211_hw *hw,
- struct sk_buff_head *list)
-{
- return skb_dequeue(list);
-}
-
-#define IS_HIGH_SPEED_USB(udev) \
- ((USB_SPEED_HIGH == (udev)->speed) ? true : false)
-
-static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
-{
- u32 i;
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- rtlusb->max_bulk_out_size = IS_HIGH_SPEED_USB(rtlusb->udev)
- ? USB_HIGH_SPEED_BULK_SIZE
- : USB_FULL_SPEED_BULK_SIZE;
-
- RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
- rtlusb->max_bulk_out_size);
-
- for (i = 0; i < __RTL_TXQ_NUM; i++) {
- u32 ep_num = rtlusb->ep_map.ep_mapping[i];
- if (!ep_num) {
- RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
- "Invalid endpoint map setting!\n");
- return -EINVAL;
- }
- }
-
- rtlusb->usb_tx_post_hdl =
- rtlpriv->cfg->usb_interface_cfg->usb_tx_post_hdl;
- rtlusb->usb_tx_cleanup =
- rtlpriv->cfg->usb_interface_cfg->usb_tx_cleanup;
- rtlusb->usb_tx_aggregate_hdl =
- (rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl)
- ? rtlpriv->cfg->usb_interface_cfg->usb_tx_aggregate_hdl
- : &_none_usb_tx_aggregate_hdl;
-
- init_usb_anchor(&rtlusb->tx_submitted);
- for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
- skb_queue_head_init(&rtlusb->tx_skb_queue[i]);
- init_usb_anchor(&rtlusb->tx_pending[i]);
- }
- return 0;
-}
-
-static void _rtl_rx_work(unsigned long param);
-
-static int _rtl_usb_init_rx(struct ieee80211_hw *hw)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
-
- rtlusb->rx_max_size = rtlpriv->cfg->usb_interface_cfg->rx_max_size;
- rtlusb->rx_urb_num = rtlpriv->cfg->usb_interface_cfg->rx_urb_num;
- rtlusb->in_ep = rtlpriv->cfg->usb_interface_cfg->in_ep_num;
- rtlusb->usb_rx_hdl = rtlpriv->cfg->usb_interface_cfg->usb_rx_hdl;
- rtlusb->usb_rx_segregate_hdl =
- rtlpriv->cfg->usb_interface_cfg->usb_rx_segregate_hdl;
-
- pr_info("rx_max_size %d, rx_urb_num %d, in_ep %d\n",
- rtlusb->rx_max_size, rtlusb->rx_urb_num, rtlusb->in_ep);
- init_usb_anchor(&rtlusb->rx_submitted);
- init_usb_anchor(&rtlusb->rx_cleanup_urbs);
-
- skb_queue_head_init(&rtlusb->rx_queue);
- rtlusb->rx_work_tasklet.func = _rtl_rx_work;
- rtlusb->rx_work_tasklet.data = (unsigned long)rtlusb;
-
- return 0;
-}
-
-static int _rtl_usb_init(struct ieee80211_hw *hw)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
- int err;
- u8 epidx;
- struct usb_interface *usb_intf = rtlusb->intf;
- u8 epnums = usb_intf->cur_altsetting->desc.bNumEndpoints;
-
- rtlusb->out_ep_nums = rtlusb->in_ep_nums = 0;
- for (epidx = 0; epidx < epnums; epidx++) {
- struct usb_endpoint_descriptor *pep_desc;
- pep_desc = &usb_intf->cur_altsetting->endpoint[epidx].desc;
-
- if (usb_endpoint_dir_in(pep_desc))
- rtlusb->in_ep_nums++;
- else if (usb_endpoint_dir_out(pep_desc))
- rtlusb->out_ep_nums++;
-
- RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
- "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
- pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
- pep_desc->bInterval);
- }
- if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
- pr_err("Too few input end points found\n");
- return -EINVAL;
- }
- if (rtlusb->out_ep_nums == 0) {
- pr_err("No output end points found\n");
- return -EINVAL;
- }
- /* usb endpoint mapping */
- err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
- rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
- _rtl_usb_init_tx(hw);
- _rtl_usb_init_rx(hw);
- return err;
-}
-
-static void rtl_usb_init_sw(struct ieee80211_hw *hw)
-{
- struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
- struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
- struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- rtlhal->hw = hw;
- ppsc->inactiveps = false;
- ppsc->leisure_ps = false;
- ppsc->fwctrl_lps = false;
- ppsc->reg_fwctrl_lps = 3;
- ppsc->reg_max_lps_awakeintvl = 5;
- ppsc->fwctrl_psmode = FW_PS_DTIM_MODE;
-
- /* IBSS */
- mac->beacon_interval = 100;
-
- /* AMPDU */
- mac->min_space_cfg = 0;
- mac->max_mss_density = 0;
-
- /* set sane AMPDU defaults */
- mac->current_ampdu_density = 7;
- mac->current_ampdu_factor = 3;
-
- /* QOS */
- rtlusb->acm_method = EACMWAY2_SW;
-
- /* IRQ */
- /* HIMR - turn all on */
- rtlusb->irq_mask[0] = 0xFFFFFFFF;
- /* HIMR_EX - turn all on */
- rtlusb->irq_mask[1] = 0xFFFFFFFF;
- rtlusb->disableHWSM = true;
-}
-
-static void _rtl_rx_completed(struct urb *urb);
-
-static int _rtl_prep_rx_urb(struct ieee80211_hw *hw, struct rtl_usb *rtlusb,
- struct urb *urb, gfp_t gfp_mask)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- void *buf;
-
- buf = usb_alloc_coherent(rtlusb->udev, rtlusb->rx_max_size, gfp_mask,
- &urb->transfer_dma);
- if (!buf) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Failed to usb_alloc_coherent!!\n");
- return -ENOMEM;
- }
-
- usb_fill_bulk_urb(urb, rtlusb->udev,
- usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
- buf, rtlusb->rx_max_size, _rtl_rx_completed, rtlusb);
- urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
- return 0;
-}
-
-static void _rtl_usb_rx_process_agg(struct ieee80211_hw *hw,
- struct sk_buff *skb)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- u8 *rxdesc = skb->data;
- struct ieee80211_hdr *hdr;
- bool unicast = false;
- __le16 fc;
- struct ieee80211_rx_status rx_status = {0};
- struct rtl_stats stats = {
- .signal = 0,
- .rate = 0,
- };
-
- skb_pull(skb, RTL_RX_DESC_SIZE);
- rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
- skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
- hdr = (struct ieee80211_hdr *)(skb->data);
- fc = hdr->frame_control;
- if (!stats.crc) {
- memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
-
- if (is_broadcast_ether_addr(hdr->addr1)) {
- /*TODO*/;
- } else if (is_multicast_ether_addr(hdr->addr1)) {
- /*TODO*/
- } else {
- unicast = true;
- rtlpriv->stats.rxbytesunicast += skb->len;
- }
-
- if (ieee80211_is_data(fc)) {
- rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
-
- if (unicast)
- rtlpriv->link_info.num_rx_inperiod++;
- }
- /* static bcn for roaming */
- rtl_beacon_statistic(hw, skb);
- }
-}
-
-static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
- struct sk_buff *skb)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- u8 *rxdesc = skb->data;
- struct ieee80211_hdr *hdr;
- bool unicast = false;
- __le16 fc;
- struct ieee80211_rx_status rx_status = {0};
- struct rtl_stats stats = {
- .signal = 0,
- .rate = 0,
- };
-
- skb_pull(skb, RTL_RX_DESC_SIZE);
- rtlpriv->cfg->ops->query_rx_desc(hw, &stats, &rx_status, rxdesc, skb);
- skb_pull(skb, (stats.rx_drvinfo_size + stats.rx_bufshift));
- hdr = (struct ieee80211_hdr *)(skb->data);
- fc = hdr->frame_control;
- if (!stats.crc) {
- memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
-
- if (is_broadcast_ether_addr(hdr->addr1)) {
- /*TODO*/;
- } else if (is_multicast_ether_addr(hdr->addr1)) {
- /*TODO*/
- } else {
- unicast = true;
- rtlpriv->stats.rxbytesunicast += skb->len;
- }
-
- if (ieee80211_is_data(fc)) {
- rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
-
- if (unicast)
- rtlpriv->link_info.num_rx_inperiod++;
- }
-
- /* static bcn for roaming */
- rtl_beacon_statistic(hw, skb);
-
- if (likely(rtl_action_proc(hw, skb, false)))
- ieee80211_rx(hw, skb);
- else
- dev_kfree_skb_any(skb);
- }
-}
-
-static void _rtl_rx_pre_process(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
- struct sk_buff *_skb;
- struct sk_buff_head rx_queue;
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- skb_queue_head_init(&rx_queue);
- if (rtlusb->usb_rx_segregate_hdl)
- rtlusb->usb_rx_segregate_hdl(hw, skb, &rx_queue);
- WARN_ON(skb_queue_empty(&rx_queue));
- while (!skb_queue_empty(&rx_queue)) {
- _skb = skb_dequeue(&rx_queue);
- _rtl_usb_rx_process_agg(hw, _skb);
- ieee80211_rx(hw, _skb);
- }
-}
-
-#define __RX_SKB_MAX_QUEUED 64
-
-static void _rtl_rx_work(unsigned long param)
-{
- struct rtl_usb *rtlusb = (struct rtl_usb *)param;
- struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
- struct sk_buff *skb;
-
- while ((skb = skb_dequeue(&rtlusb->rx_queue))) {
- if (unlikely(IS_USB_STOP(rtlusb))) {
- dev_kfree_skb_any(skb);
- continue;
- }
-
- if (likely(!rtlusb->usb_rx_segregate_hdl)) {
- _rtl_usb_rx_process_noagg(hw, skb);
- } else {
- /* TO DO */
- _rtl_rx_pre_process(hw, skb);
- pr_err("rx agg not supported\n");
- }
- }
-}
-
-static unsigned int _rtl_rx_get_padding(struct ieee80211_hdr *hdr,
- unsigned int len)
-{
-#if NET_IP_ALIGN != 0
- unsigned int padding = 0;
-#endif
-
- /* make function no-op when possible */
- if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
- return 0;
-
-#if NET_IP_ALIGN != 0
- /* alignment calculation as in lbtf_rx() / carl9170_rx_copy_data() */
- /* TODO: deduplicate common code, define helper function instead? */
-
- if (ieee80211_is_data_qos(hdr->frame_control)) {
- u8 *qc = ieee80211_get_qos_ctl(hdr);
-
- padding ^= NET_IP_ALIGN;
-
- /* Input might be invalid, avoid accessing memory outside
- * the buffer.
- */
- if ((unsigned long)qc - (unsigned long)hdr < len &&
- *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT)
- padding ^= NET_IP_ALIGN;
- }
-
- if (ieee80211_has_a4(hdr->frame_control))
- padding ^= NET_IP_ALIGN;
-
- return padding;
-#endif
-}
-
-#define __RADIO_TAP_SIZE_RSV 32
-
-static void _rtl_rx_completed(struct urb *_urb)
-{
- struct rtl_usb *rtlusb = (struct rtl_usb *)_urb->context;
- struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- int err = 0;
-
- if (unlikely(IS_USB_STOP(rtlusb)))
- goto free;
-
- if (likely(0 == _urb->status)) {
- unsigned int padding;
- struct sk_buff *skb;
- unsigned int qlen;
- unsigned int size = _urb->actual_length;
- struct ieee80211_hdr *hdr;
-
- if (size < RTL_RX_DESC_SIZE + sizeof(struct ieee80211_hdr)) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Too short packet from bulk IN! (len: %d)\n",
- size);
- goto resubmit;
- }
-
- qlen = skb_queue_len(&rtlusb->rx_queue);
- if (qlen >= __RX_SKB_MAX_QUEUED) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Pending RX skbuff queue full! (qlen: %d)\n",
- qlen);
- goto resubmit;
- }
-
- hdr = (void *)(_urb->transfer_buffer + RTL_RX_DESC_SIZE);
- padding = _rtl_rx_get_padding(hdr, size - RTL_RX_DESC_SIZE);
-
- skb = dev_alloc_skb(size + __RADIO_TAP_SIZE_RSV + padding);
- if (!skb) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Can't allocate skb for bulk IN!\n");
- goto resubmit;
- }
-
- _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
-
- /* Make sure the payload data is 4 byte aligned. */
- skb_reserve(skb, padding);
-
- /* reserve some space for mac80211's radiotap */
- skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
-
- memcpy(skb_put(skb, size), _urb->transfer_buffer, size);
-
- skb_queue_tail(&rtlusb->rx_queue, skb);
- tasklet_schedule(&rtlusb->rx_work_tasklet);
-
- goto resubmit;
- }
-
- switch (_urb->status) {
- /* disconnect */
- case -ENOENT:
- case -ECONNRESET:
- case -ENODEV:
- case -ESHUTDOWN:
- goto free;
- default:
- break;
- }
-
-resubmit:
- usb_anchor_urb(_urb, &rtlusb->rx_submitted);
- err = usb_submit_urb(_urb, GFP_ATOMIC);
- if (unlikely(err)) {
- usb_unanchor_urb(_urb);
- goto free;
- }
- return;
-
-free:
- /* On some architectures, usb_free_coherent must not be called from
- * hardirq context. Queue urb to cleanup list.
- */
- usb_anchor_urb(_urb, &rtlusb->rx_cleanup_urbs);
-}
-
-#undef __RADIO_TAP_SIZE_RSV
-
-static void _rtl_usb_cleanup_rx(struct ieee80211_hw *hw)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- struct urb *urb;
-
- usb_kill_anchored_urbs(&rtlusb->rx_submitted);
-
- tasklet_kill(&rtlusb->rx_work_tasklet);
- cancel_work_sync(&rtlpriv->works.lps_change_work);
-
- flush_workqueue(rtlpriv->works.rtl_wq);
- destroy_workqueue(rtlpriv->works.rtl_wq);
-
- skb_queue_purge(&rtlusb->rx_queue);
-
- while ((urb = usb_get_from_anchor(&rtlusb->rx_cleanup_urbs))) {
- usb_free_coherent(urb->dev, urb->transfer_buffer_length,
- urb->transfer_buffer, urb->transfer_dma);
- usb_free_urb(urb);
- }
-}
-
-static int _rtl_usb_receive(struct ieee80211_hw *hw)
-{
- struct urb *urb;
- int err;
- int i;
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- WARN_ON(0 == rtlusb->rx_urb_num);
- /* 1600 == 1514 + max WLAN header + rtk info */
- WARN_ON(rtlusb->rx_max_size < 1600);
-
- for (i = 0; i < rtlusb->rx_urb_num; i++) {
- err = -ENOMEM;
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Failed to alloc URB!!\n");
- goto err_out;
- }
-
- err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
- if (err < 0) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Failed to prep_rx_urb!!\n");
- usb_free_urb(urb);
- goto err_out;
- }
-
- usb_anchor_urb(urb, &rtlusb->rx_submitted);
- err = usb_submit_urb(urb, GFP_KERNEL);
- if (err)
- goto err_out;
- usb_free_urb(urb);
- }
- return 0;
-
-err_out:
- usb_kill_anchored_urbs(&rtlusb->rx_submitted);
- _rtl_usb_cleanup_rx(hw);
- return err;
-}
-
-static int rtl_usb_start(struct ieee80211_hw *hw)
-{
- int err;
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- err = rtlpriv->cfg->ops->hw_init(hw);
- if (!err) {
- rtl_init_rx_config(hw);
-
- /* Enable software */
- SET_USB_START(rtlusb);
- /* should after adapter start and interrupt enable. */
- set_hal_start(rtlhal);
-
- /* Start bulk IN */
- err = _rtl_usb_receive(hw);
- }
-
- return err;
-}
-/**
- *
- *
- */
-
-/*======================= tx =========================================*/
-static void rtl_usb_cleanup(struct ieee80211_hw *hw)
-{
- u32 i;
- struct sk_buff *_skb;
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- struct ieee80211_tx_info *txinfo;
-
- /* clean up rx stuff. */
- _rtl_usb_cleanup_rx(hw);
-
- /* clean up tx stuff */
- for (i = 0; i < RTL_USB_MAX_EP_NUM; i++) {
- while ((_skb = skb_dequeue(&rtlusb->tx_skb_queue[i]))) {
- rtlusb->usb_tx_cleanup(hw, _skb);
- txinfo = IEEE80211_SKB_CB(_skb);
- ieee80211_tx_info_clear_status(txinfo);
- txinfo->flags |= IEEE80211_TX_STAT_ACK;
- ieee80211_tx_status_irqsafe(hw, _skb);
- }
- usb_kill_anchored_urbs(&rtlusb->tx_pending[i]);
- }
- usb_kill_anchored_urbs(&rtlusb->tx_submitted);
-}
-
-/**
- *
- * We may add some struct into struct rtl_usb later. Do deinit here.
- *
- */
-static void rtl_usb_deinit(struct ieee80211_hw *hw)
-{
- rtl_usb_cleanup(hw);
-}
-
-static void rtl_usb_stop(struct ieee80211_hw *hw)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- /* should after adapter start and interrupt enable. */
- set_hal_stop(rtlhal);
- cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
- /* Enable software */
- SET_USB_STOP(rtlusb);
- rtlpriv->cfg->ops->hw_disable(hw);
-}
-
-static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
-{
- int err;
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- usb_anchor_urb(_urb, &rtlusb->tx_submitted);
- err = usb_submit_urb(_urb, GFP_ATOMIC);
- if (err < 0) {
- struct sk_buff *skb;
-
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Failed to submit urb\n");
- usb_unanchor_urb(_urb);
- skb = (struct sk_buff *)_urb->context;
- kfree_skb(skb);
- }
- usb_free_urb(_urb);
-}
-
-static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
- struct sk_buff *skb)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- struct ieee80211_tx_info *txinfo;
-
- rtlusb->usb_tx_post_hdl(hw, urb, skb);
- skb_pull(skb, RTL_TX_HEADER_SIZE);
- txinfo = IEEE80211_SKB_CB(skb);
- ieee80211_tx_info_clear_status(txinfo);
- txinfo->flags |= IEEE80211_TX_STAT_ACK;
-
- if (urb->status) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Urb has error status 0x%X\n", urb->status);
- goto out;
- }
- /* TODO: statistics */
-out:
- ieee80211_tx_status_irqsafe(hw, skb);
- return urb->status;
-}
-
-static void _rtl_tx_complete(struct urb *urb)
-{
- struct sk_buff *skb = (struct sk_buff *)urb->context;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct rtl_usb *rtlusb = (struct rtl_usb *)info->rate_driver_data[0];
- struct ieee80211_hw *hw = usb_get_intfdata(rtlusb->intf);
- int err;
-
- if (unlikely(IS_USB_STOP(rtlusb)))
- return;
- err = _usb_tx_post(hw, urb, skb);
- if (err) {
- /* Ignore error and keep issuiing other urbs */
- return;
- }
-}
-
-static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
- struct sk_buff *skb, u32 ep_num)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- struct urb *_urb;
-
- WARN_ON(NULL == skb);
- _urb = usb_alloc_urb(0, GFP_ATOMIC);
- if (!_urb) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "Can't allocate URB for bulk out!\n");
- kfree_skb(skb);
- return NULL;
- }
- _rtl_install_trx_info(rtlusb, skb, ep_num);
- usb_fill_bulk_urb(_urb, rtlusb->udev, usb_sndbulkpipe(rtlusb->udev,
- ep_num), skb->data, skb->len, _rtl_tx_complete, skb);
- _urb->transfer_flags |= URB_ZERO_PACKET;
- return _urb;
-}
-
-static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
- enum rtl_txq qnum)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- u32 ep_num;
- struct urb *_urb = NULL;
- struct sk_buff *_skb = NULL;
-
- WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
- if (unlikely(IS_USB_STOP(rtlusb))) {
- RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- "USB device is stopping...\n");
- kfree_skb(skb);
- return;
- }
- ep_num = rtlusb->ep_map.ep_mapping[qnum];
- _skb = skb;
- _urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
- if (unlikely(!_urb)) {
- RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- "Can't allocate urb. Drop skb!\n");
- kfree_skb(skb);
- return;
- }
- _rtl_submit_tx_urb(hw, _urb);
-}
-
-static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- struct sk_buff *skb,
- u16 hw_queue)
-{
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct rtl_tx_desc *pdesc = NULL;
- struct rtl_tcb_desc tcb_desc;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
- __le16 fc = hdr->frame_control;
- u8 *pda_addr = hdr->addr1;
- /* ssn */
- u8 *qc = NULL;
- u8 tid = 0;
- u16 seq_number = 0;
-
- memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
- if (ieee80211_is_auth(fc)) {
- RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
- rtl_ips_nic_on(hw);
- }
-
- if (rtlpriv->psc.sw_ps_enabled) {
- if (ieee80211_is_data(fc) && !ieee80211_is_nullfunc(fc) &&
- !ieee80211_has_pm(fc))
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
- }
-
- rtl_action_proc(hw, skb, true);
- if (is_multicast_ether_addr(pda_addr))
- rtlpriv->stats.txbytesmulticast += skb->len;
- else if (is_broadcast_ether_addr(pda_addr))
- rtlpriv->stats.txbytesbroadcast += skb->len;
- else
- rtlpriv->stats.txbytesunicast += skb->len;
- if (ieee80211_is_data_qos(fc)) {
- qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
- seq_number = (le16_to_cpu(hdr->seq_ctrl) &
- IEEE80211_SCTL_SEQ) >> 4;
- seq_number += 1;
- seq_number <<= 4;
- }
- rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
- hw_queue, &tcb_desc);
- if (!ieee80211_has_morefrags(hdr->frame_control)) {
- if (qc)
- mac->tids[tid].seq_number = seq_number;
- }
- if (ieee80211_is_data(fc))
- rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);
-}
-
-static int rtl_usb_tx(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- struct sk_buff *skb,
- struct rtl_tcb_desc *dummy)
-{
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
- struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
- __le16 fc = hdr->frame_control;
- u16 hw_queue;
-
- if (unlikely(is_hal_stop(rtlhal)))
- goto err_free;
- hw_queue = rtlusb->usb_mq_to_hwq(fc, skb_get_queue_mapping(skb));
- _rtl_usb_tx_preprocess(hw, sta, skb, hw_queue);
- _rtl_usb_transmit(hw, skb, hw_queue);
- return NETDEV_TX_OK;
-
-err_free:
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
-}
-
-static bool rtl_usb_tx_chk_waitq_insert(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- struct sk_buff *skb)
-{
- return false;
-}
-
-static void rtl_fill_h2c_cmd_work_callback(struct work_struct *work)
-{
- struct rtl_works *rtlworks =
- container_of(work, struct rtl_works, fill_h2c_cmd);
- struct ieee80211_hw *hw = rtlworks->hw;
- struct rtl_priv *rtlpriv = rtl_priv(hw);
-
- rtlpriv->cfg->ops->fill_h2c_cmd(hw, H2C_RA_MASK, 5, rtlpriv->rate_mask);
-}
-
-static struct rtl_intf_ops rtl_usb_ops = {
- .adapter_start = rtl_usb_start,
- .adapter_stop = rtl_usb_stop,
- .adapter_tx = rtl_usb_tx,
- .waitq_insert = rtl_usb_tx_chk_waitq_insert,
-};
-
-int rtl_usb_probe(struct usb_interface *intf,
- const struct usb_device_id *id,
- struct rtl_hal_cfg *rtl_hal_cfg)
-{
- int err;
- struct ieee80211_hw *hw = NULL;
- struct rtl_priv *rtlpriv = NULL;
- struct usb_device *udev;
- struct rtl_usb_priv *usb_priv;
-
- hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
- sizeof(struct rtl_usb_priv), &rtl_ops);
- if (!hw) {
- RT_ASSERT(false, "ieee80211 alloc failed\n");
- return -ENOMEM;
- }
- rtlpriv = hw->priv;
- rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32),
- GFP_KERNEL);
- if (!rtlpriv->usb_data)
- return -ENOMEM;
-
- /* this spin lock must be initialized early */
- spin_lock_init(&rtlpriv->locks.usb_lock);
- INIT_WORK(&rtlpriv->works.fill_h2c_cmd,
- rtl_fill_h2c_cmd_work_callback);
- INIT_WORK(&rtlpriv->works.lps_change_work,
- rtl_lps_change_work_callback);
-
- rtlpriv->usb_data_index = 0;
- init_completion(&rtlpriv->firmware_loading_complete);
- SET_IEEE80211_DEV(hw, &intf->dev);
- udev = interface_to_usbdev(intf);
- usb_get_dev(udev);
- usb_priv = rtl_usbpriv(hw);
- memset(usb_priv, 0, sizeof(*usb_priv));
- usb_priv->dev.intf = intf;
- usb_priv->dev.udev = udev;
- usb_set_intfdata(intf, hw);
- /* init cfg & intf_ops */
- rtlpriv->rtlhal.interface = INTF_USB;
- rtlpriv->cfg = rtl_hal_cfg;
- rtlpriv->intf_ops = &rtl_usb_ops;
- rtl_dbgp_flag_init(hw);
- /* Init IO handler */
- _rtl_usb_io_handler_init(&udev->dev, hw);
- rtlpriv->cfg->ops->read_chip_version(hw);
- /*like read eeprom and so on */
- rtlpriv->cfg->ops->read_eeprom_info(hw);
- err = _rtl_usb_init(hw);
- if (err)
- goto error_out;
- rtl_usb_init_sw(hw);
- /* Init mac80211 sw */
- err = rtl_init_core(hw);
- if (err) {
- RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- "Can't allocate sw for mac80211\n");
- goto error_out;
- }
- if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
- RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
- goto error_out;
- }
- rtlpriv->cfg->ops->init_sw_leds(hw);
-
- err = ieee80211_register_hw(hw);
- if (err) {
- RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- "Can't register mac80211 hw.\n");
- err = -ENODEV;
- goto error_out;
- }
- rtlpriv->mac80211.mac80211_registered = 1;
-
- set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
- return 0;
-
-error_out:
- rtl_deinit_core(hw);
- _rtl_usb_io_handler_release(hw);
- usb_put_dev(udev);
- complete(&rtlpriv->firmware_loading_complete);
- return -ENODEV;
-}
-EXPORT_SYMBOL(rtl_usb_probe);
-
-void rtl_usb_disconnect(struct usb_interface *intf)
-{
- struct ieee80211_hw *hw = usb_get_intfdata(intf);
- struct rtl_priv *rtlpriv = rtl_priv(hw);
- struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
- struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
-
- if (unlikely(!rtlpriv))
- return;
- /* just in case driver is removed before firmware callback */
- wait_for_completion(&rtlpriv->firmware_loading_complete);
- clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
- /*ieee80211_unregister_hw will call ops_stop */
- if (rtlmac->mac80211_registered == 1) {
- ieee80211_unregister_hw(hw);
- rtlmac->mac80211_registered = 0;
- } else {
- rtl_deinit_deferred_work(hw);
- rtlpriv->intf_ops->adapter_stop(hw);
- }
- /*deinit rfkill */
- /* rtl_deinit_rfkill(hw); */
- rtl_usb_deinit(hw);
- rtl_deinit_core(hw);
- kfree(rtlpriv->usb_data);
- rtlpriv->cfg->ops->deinit_sw_leds(hw);
- rtlpriv->cfg->ops->deinit_sw_vars(hw);
- _rtl_usb_io_handler_release(hw);
- usb_put_dev(rtlusb->udev);
- usb_set_intfdata(intf, NULL);
- ieee80211_free_hw(hw);
-}
-EXPORT_SYMBOL(rtl_usb_disconnect);
-
-int rtl_usb_suspend(struct usb_interface *pusb_intf, pm_message_t message)
-{
- return 0;
-}
-EXPORT_SYMBOL(rtl_usb_suspend);
-
-int rtl_usb_resume(struct usb_interface *pusb_intf)
-{
- return 0;
-}
-EXPORT_SYMBOL(rtl_usb_resume);
Code Review / kvmfornfv.git / blobdiff