#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 _rtl_usb_cleanup_tx(struct ieee80211_hw *hw);
static void _usbctrl_vendorreq_sync(struct usb_device *udev, u8 reqtype,
u16 value, void *pdata, u16 len)
{
unsigned int pipe;
int status;
int vendorreq_times = 0;
static int count;
if (reqtype == REALTEK_USB_VENQT_READ)
pipe = usb_rcvctrlpipe(udev, 0);
else
pipe = usb_sndctrlpipe(udev, 0);
do {
status = usb_control_msg(udev, pipe, REALTEK_USB_VENQT_CMD_REQ,
reqtype, value, REALTEK_USB_VENQT_CMD_IDX,
pdata, len, 1000);
if (status < 0) {
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)
dev_err(&udev->dev, "reg 0x%x, usbctrl_vendorreq TimeOut! status:0x%x value=0x%x reqtype=0x%x\n",
value, status, *(u32 *)pdata, reqtype);
}
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);
u16 wvalue;
__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);
wvalue = (u16)addr;
_usbctrl_vendorreq_sync(udev, REALTEK_USB_VENQT_READ, wvalue, data, len);
return le32_to_cpu(*data);
}
static void _usb_write_sync(struct rtl_priv *rtlpriv, u32 addr, u32 val, u16 len)
{
struct device *dev = rtlpriv->io.dev;
struct usb_device *udev = to_usb_device(dev);
unsigned long flags;
__le32 *data;
u16 wvalue;
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);
wvalue = (u16)(addr & 0x0000ffff);
*data = cpu_to_le32(val);
_usbctrl_vendorreq_sync(udev, REALTEK_USB_VENQT_WRITE, wvalue, data, len);
}
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_write8_sync(struct rtl_priv *rtlpriv, u32 addr, u8 val)
{
_usb_write_sync(rtlpriv, addr, val, 1);
}
static void _usb_write16_sync(struct rtl_priv *rtlpriv, u32 addr, u16 val)
{
_usb_write_sync(rtlpriv, addr, val, 2);
}
static void _usb_write32_sync(struct rtl_priv *rtlpriv, u32 addr, u32 val)
{
_usb_write_sync(rtlpriv, addr, val, 4);
}
static void _usb_write_chunk_sync(struct rtl_priv *rtlpriv, u32 addr,
u32 length, u8 *data)
{
struct usb_device *udev = to_usb_device(rtlpriv->io.dev);
_usbctrl_vendorreq_sync(udev, REALTEK_USB_VENQT_WRITE, addr, data, length);
}
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 = _usb_write8_sync;
rtlpriv->io.write16 = _usb_write16_sync;
rtlpriv->io.write32 = _usb_write32_sync;
rtlpriv->io.write_chunk = _usb_write_chunk_sync;
rtlpriv->io.read8 = _usb_read8_sync;
rtlpriv->io.read16 = _usb_read16_sync;
rtlpriv->io.read32 = _usb_read32_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);
}
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;
rtl_dbg(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) {
rtl_dbg(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(struct tasklet_struct *t);
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->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);
tasklet_setup(&rtlusb->rx_work_tasklet, _rtl_rx_work);
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)) {
if (usb_endpoint_xfer_bulk(pep_desc)) {
if (rtlusb->in_ep_nums == 0)
rtlusb->in_ep = usb_endpoint_num(pep_desc);
else
pr_warn("%s: bulk in endpoint is not the first in endpoint\n",
__func__);
}
rtlusb->in_ep_nums++;
} else if (usb_endpoint_dir_out(pep_desc)) {
if (rtlusb->out_ep_nums < RTL_USB_MAX_BULKOUT_NUM) {
if (usb_endpoint_xfer_bulk(pep_desc))
rtlusb->out_eps[rtlusb->out_ep_nums] =
usb_endpoint_num(pep_desc);
} else {
pr_warn("%s: found more bulk out endpoints than the expected %d\n",
__func__, RTL_USB_MAX_BULKOUT_NUM);
}
rtlusb->out_ep_nums++;
}
rtl_dbg(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->out_ep_nums == 0) {
pr_err("No output end points found\n");
return -EINVAL;
}
err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
if (err)
return err;
rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
err = _rtl_usb_init_tx(hw);
if (err)
return err;
err = _rtl_usb_init_rx(hw);
if (err)
goto err_out;
return 0;
err_out:
_rtl_usb_cleanup_tx(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;
mac->beacon_interval = 100;
mac->min_space_cfg = 0;
mac->max_mss_density = 0;
mac->current_ampdu_density = 7;
mac->current_ampdu_factor = 3;
rtlusb->acm_method = EACMWAY2_SW;
rtlusb->irq_mask[0] = 0xFFFFFFFF;
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)
{
void *buf;
buf = usb_alloc_coherent(rtlusb->udev, rtlusb->rx_max_size, gfp_mask,
&urb->transfer_dma);
if (!buf) {
pr_err("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 = rtl_get_hdr(skb);
fc = hdr->frame_control;
if (!stats.crc) {
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
if (is_broadcast_ether_addr(hdr->addr1)) {
;
} else if (is_multicast_ether_addr(hdr->addr1)) {
} 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++;
}
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 = rtl_get_hdr(skb);
fc = hdr->frame_control;
if (!stats.crc) {
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
if (is_broadcast_ether_addr(hdr->addr1)) {
;
} else if (is_multicast_ether_addr(hdr->addr1)) {
} 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++;
}
rtl_beacon_statistic(hw, skb);
if (likely(rtl_action_proc(hw, skb, false)))
ieee80211_rx(hw, skb);
else
dev_kfree_skb_any(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(struct tasklet_struct *t)
{
struct rtl_usb *rtlusb = from_tasklet(rtlusb, t, rx_work_tasklet);
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 {
_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
if (NET_IP_ALIGN == 0 || len < sizeof(*hdr))
return 0;
#if NET_IP_ALIGN != 0
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *qc = ieee80211_get_qos_ctl(hdr);
padding ^= NET_IP_ALIGN;
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;
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)) {
pr_err("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) {
pr_err("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) {
pr_err("Can't allocate skb for bulk IN!\n");
goto resubmit;
}
_rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
skb_reserve(skb, padding);
skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
skb_put_data(skb, _urb->transfer_buffer, size);
skb_queue_tail(&rtlusb->rx_queue, skb);
tasklet_schedule(&rtlusb->rx_work_tasklet);
goto resubmit;
}
switch (_urb->status) {
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:
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);
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_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
WARN_ON(0 == rtlusb->rx_urb_num);
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)
goto err_out;
err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
if (err < 0) {
pr_err("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) {
usb_unanchor_urb(urb);
usb_free_urb(urb);
goto err_out;
}
usb_free_urb(urb);
}
return 0;
err_out:
usb_kill_anchored_urbs(&rtlusb->rx_submitted);
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);
SET_USB_START(rtlusb);
set_hal_start(rtlhal);
err = _rtl_usb_receive(hw);
}
return err;
}
static void _rtl_usb_cleanup_tx(struct ieee80211_hw *hw)
{
u32 i;
struct sk_buff *_skb;
struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
struct ieee80211_tx_info *txinfo;
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);
}
static void rtl_usb_cleanup(struct ieee80211_hw *hw)
{
_rtl_usb_cleanup_rx(hw);
_rtl_usb_cleanup_tx(hw);
}
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));
struct urb *urb;
set_hal_stop(rtlhal);
cancel_work_sync(&rtlpriv->works.fill_h2c_cmd);
SET_USB_STOP(rtlusb);
usb_kill_anchored_urbs(&rtlusb->rx_submitted);
tasklet_kill(&rtlusb->rx_work_tasklet);
cancel_work_sync(&rtlpriv->works.lps_change_work);
cancel_work_sync(&rtlpriv->works.update_beacon_work);
flush_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);
}
rtlpriv->cfg->ops->hw_disable(hw);
}
static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
{
int err;
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;
pr_err("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_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) {
pr_err("Urb has error status 0x%X\n", urb->status);
goto out;
}
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) {
return;
}
}
static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
struct sk_buff *skb, u32 ep_num)
{
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)
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_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
u32 ep_num;
struct urb *_urb = NULL;
WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
if (unlikely(IS_USB_STOP(rtlusb))) {
pr_err("USB device is stopping...\n");
kfree_skb(skb);
return;
}
ep_num = rtlusb->ep_map.ep_mapping[qnum];
_urb = _rtl_usb_tx_urb_setup(hw, skb, ep_num);
if (unlikely(!_urb)) {
pr_err("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 ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct rtl_tx_desc *pdesc = NULL;
struct rtl_tcb_desc tcb_desc;
struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
__le16 fc = hdr->frame_control;
u8 *pda_addr = hdr->addr1;
memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
if (ieee80211_is_auth(fc)) {
rtl_dbg(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
}
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;
rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc, NULL, info, sta, skb,
hw_queue, &tcb_desc);
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 = rtl_get_hdr(skb);
__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 const 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,
const 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) {
pr_warn("rtl_usb: ieee80211 alloc failed\n");
return -ENOMEM;
}
rtlpriv = hw->priv;
rtlpriv->hw = hw;
rtlpriv->usb_data = kcalloc(RTL_USB_MAX_RX_COUNT, sizeof(u32),
GFP_KERNEL);
if (!rtlpriv->usb_data) {
ieee80211_free_hw(hw);
return -ENOMEM;
}
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);
INIT_WORK(&rtlpriv->works.update_beacon_work,
rtl_update_beacon_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);
rtlpriv->rtlhal.interfaceindex =
intf->altsetting[0].desc.bInterfaceNumber;
rtlpriv->rtlhal.interface = INTF_USB;
rtlpriv->cfg = rtl_hal_cfg;
rtlpriv->intf_ops = &rtl_usb_ops;
_rtl_usb_io_handler_init(&udev->dev, hw);
rtlpriv->cfg->ops->read_chip_version(hw);
rtlpriv->cfg->ops->read_eeprom_info(hw);
err = _rtl_usb_init(hw);
if (err)
goto error_out2;
rtl_usb_init_sw(hw);
err = rtl_init_core(hw);
if (err) {
pr_err("Can't allocate sw for mac80211\n");
goto error_out2;
}
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
pr_err("Can't init_sw_vars\n");
goto error_out;
}
rtl_init_sw_leds(hw);
err = ieee80211_register_hw(hw);
if (err) {
pr_err("Can't register mac80211 hw.\n");
goto error_init_vars;
}
rtlpriv->mac80211.mac80211_registered = 1;
set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
return 0;
error_init_vars:
wait_for_completion(&rtlpriv->firmware_loading_complete);
rtlpriv->cfg->ops->deinit_sw_vars(hw);
error_out:
rtl_usb_deinit(hw);
rtl_deinit_core(hw);
error_out2:
_rtl_usb_io_handler_release(hw);
usb_put_dev(udev);
kfree(rtlpriv->usb_data);
ieee80211_free_hw(hw);
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;
wait_for_completion(&rtlpriv->firmware_loading_complete);
clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
if (rtlmac->mac80211_registered == 1) {
ieee80211_unregister_hw(hw);
rtlmac->mac80211_registered = 0;
} else {
rtl_deinit_deferred_work(hw, false);
rtlpriv->intf_ops->adapter_stop(hw);
}
rtl_usb_deinit(hw);
rtl_deinit_core(hw);
kfree(rtlpriv->usb_data);
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);
