aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/rtlwifi/usb.c
diff options
context:
space:
mode:
authorGeorge <george0505@realtek.com>2011-02-11 14:27:49 -0600
committerJohn W. Linville <linville@tuxdriver.com>2011-02-11 16:16:37 -0500
commit2ca20f79e0d895489ae2f79fa321077e5ee2981d (patch)
tree7603d7d0d09aa78e92b56e85838a5196d86a366b /drivers/net/wireless/rtlwifi/usb.c
parent62e63975f47fcc0ebcaca04669098fe3ca7b20a2 (diff)
rtlwifi: Add usb driver
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: George <george0505@realtek.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rtlwifi/usb.c')
-rw-r--r--drivers/net/wireless/rtlwifi/usb.c1035
1 files changed, 1035 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
new file mode 100644
index 000000000000..fbf24a0f9054
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -0,0 +1,1035 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2011 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 <linux/usb.h>
+#include "core.h"
+#include "wifi.h"
+#include "usb.h"
+#include "base.h"
+#include "ps.h"
+
+#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 REALTEK_USB_VENQT_MAX_BUF_SIZE 254
+
+static void usbctrl_async_callback(struct urb *urb)
+{
+ if (urb)
+ kfree(urb->context);
+}
+
+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;
+ struct rtl819x_async_write_data {
+ u8 data[REALTEK_USB_VENQT_MAX_BUF_SIZE];
+ struct usb_ctrlrequest dr;
+ } *buf;
+
+ pipe = usb_sndctrlpipe(udev, 0); /* write_out */
+ reqtype = REALTEK_USB_VENQT_WRITE;
+
+ buf = kmalloc(sizeof(*buf), GFP_ATOMIC);
+ if (!buf)
+ return -ENOMEM;
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb) {
+ kfree(buf);
+ return -ENOMEM;
+ }
+
+ dr = &buf->dr;
+
+ dr->bRequestType = reqtype;
+ dr->bRequest = request;
+ dr->wValue = cpu_to_le16(value);
+ dr->wIndex = cpu_to_le16(index);
+ dr->wLength = cpu_to_le16(len);
+ memcpy(buf, pdata, len);
+ usb_fill_control_urb(urb, udev, pipe,
+ (unsigned char *)dr, buf, len,
+ usbctrl_async_callback, buf);
+ rc = usb_submit_urb(urb, GFP_ATOMIC);
+ if (rc < 0)
+ kfree(buf);
+ 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;
+
+ pipe = usb_rcvctrlpipe(udev, 0); /* read_in */
+ reqtype = REALTEK_USB_VENQT_READ;
+
+ status = usb_control_msg(udev, pipe, request, reqtype, value, index,
+ pdata, len, 0); /* max. timeout */
+
+ if (status < 0)
+ printk(KERN_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 usb_device *udev, u32 addr, u16 len)
+{
+ u8 request;
+ u16 wvalue;
+ u16 index;
+ u32 *data;
+ u32 ret;
+
+ data = kmalloc(sizeof(u32), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ 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);
+ ret = le32_to_cpu(*data);
+ kfree(data);
+ return ret;
+}
+
+static u8 _usb_read8_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+ struct device *dev = rtlpriv->io.dev;
+
+ return (u8)_usb_read_sync(to_usb_device(dev), addr, 1);
+}
+
+static u16 _usb_read16_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+ struct device *dev = rtlpriv->io.dev;
+
+ return (u16)_usb_read_sync(to_usb_device(dev), addr, 2);
+}
+
+static u32 _usb_read32_sync(struct rtl_priv *rtlpriv, u32 addr)
+{
+ struct device *dev = rtlpriv->io.dev;
+
+ return _usb_read_sync(to_usb_device(dev), addr, 4);
+}
+
+static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
+ u16 len)
+{
+ u8 request;
+ u16 wvalue;
+ u16 index;
+ u32 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 int _usb_nbytes_read_write(struct usb_device *udev, bool read, u32 addr,
+ u16 len, u8 *pdata)
+{
+ int status;
+ u8 request;
+ u16 wvalue;
+ u16 index;
+
+ request = REALTEK_USB_VENQT_CMD_REQ;
+ index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
+ wvalue = (u16)addr;
+ if (read)
+ status = _usbctrl_vendorreq_sync_read(udev, request, wvalue,
+ index, pdata, len);
+ else
+ status = _usbctrl_vendorreq_async_write(udev, request, wvalue,
+ index, pdata, len);
+ return status;
+}
+
+static int _usb_readN_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len,
+ u8 *pdata)
+{
+ struct device *dev = rtlpriv->io.dev;
+
+ return _usb_nbytes_read_write(to_usb_device(dev), true, addr, len,
+ pdata);
+}
+
+static int _usb_writeN_async(struct rtl_priv *rtlpriv, u32 addr, u16 len,
+ u8 *pdata)
+{
+ struct device *dev = rtlpriv->io.dev;
+
+ return _usb_nbytes_read_write(to_usb_device(dev), false, addr, len,
+ pdata);
+}
+
+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.writeN_async = _usb_writeN_async;
+ rtlpriv->io.read8_sync = _usb_read8_sync;
+ rtlpriv->io.read16_sync = _usb_read16_sync;
+ rtlpriv->io.read32_sync = _usb_read32_sync;
+ rtlpriv->io.readN_sync = _usb_readN_sync;
+}
+
+static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *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 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;
+
+ printk(KERN_INFO "rtl8192cu: 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);
+ 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)
+ 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 int _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->b_inactiveps = false;
+ ppsc->b_leisure_ps = false;
+ ppsc->b_fwctrl_lps = false;
+ ppsc->b_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;
+ return 0;
+}
+
+#define __RADIO_TAP_SIZE_RSV 32
+
+static void _rtl_rx_completed(struct urb *urb);
+
+static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
+ struct rtl_usb *rtlusb,
+ struct urb *urb,
+ gfp_t gfp_mask)
+{
+ struct sk_buff *skb;
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+ skb = __dev_alloc_skb((rtlusb->rx_max_size + __RADIO_TAP_SIZE_RSV),
+ gfp_mask);
+ if (!skb) {
+ RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+ ("Failed to __dev_alloc_skb!!\n"))
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* reserve some space for mac80211's radiotap */
+ skb_reserve(skb, __RADIO_TAP_SIZE_RSV);
+ usb_fill_bulk_urb(urb, rtlusb->udev,
+ usb_rcvbulkpipe(rtlusb->udev, rtlusb->in_ep),
+ skb->data, min(skb_tailroom(skb),
+ (int)rtlusb->rx_max_size),
+ _rtl_rx_completed, skb);
+
+ _rtl_install_trx_info(rtlusb, skb, rtlusb->in_ep);
+ return skb;
+}
+
+#undef __RADIO_TAP_SIZE_RSV
+
+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;
+ u16 fc;
+ struct ieee80211_rx_status rx_status = {0};
+ struct rtl_stats stats = {
+ .signal = 0,
+ .noise = -98,
+ .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 = le16_to_cpu(hdr->frame_control);
+ if (!stats.b_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;
+ }
+
+ rtl_is_special_data(hw, skb, false);
+
+ if (ieee80211_is_data(fc)) {
+ rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
+
+ if (unicast)
+ rtlpriv->link_info.num_rx_inperiod++;
+ }
+ }
+}
+
+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;
+ u16 fc;
+ struct ieee80211_rx_status rx_status = {0};
+ struct rtl_stats stats = {
+ .signal = 0,
+ .noise = -98,
+ .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 = le16_to_cpu(hdr->frame_control);
+ if (!stats.b_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;
+ }
+
+ rtl_is_special_data(hw, skb, false);
+
+ if (ieee80211_is_data(fc)) {
+ rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
+
+ if (unicast)
+ rtlpriv->link_info.num_rx_inperiod++;
+ }
+ if (likely(rtl_action_proc(hw, skb, false))) {
+ struct sk_buff *uskb = NULL;
+ u8 *pdata;
+
+ uskb = dev_alloc_skb(skb->len + 128);
+ memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
+ sizeof(rx_status));
+ pdata = (u8 *)skb_put(uskb, skb->len);
+ memcpy(pdata, skb->data, skb->len);
+ dev_kfree_skb_any(skb);
+ ieee80211_rx_irqsafe(hw, uskb);
+ } 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_irqsafe(hw, skb);
+ }
+}
+
+static void _rtl_rx_completed(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);
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ int err = 0;
+
+ if (unlikely(IS_USB_STOP(rtlusb)))
+ goto free;
+
+ if (likely(0 == _urb->status)) {
+ /* If this code were moved to work queue, would CPU
+ * utilization be improved? NOTE: We shall allocate another skb
+ * and reuse the original one.
+ */
+ skb_put(skb, _urb->actual_length);
+
+ if (likely(!rtlusb->usb_rx_segregate_hdl)) {
+ struct sk_buff *_skb;
+ _rtl_usb_rx_process_noagg(hw, skb);
+ _skb = _rtl_prep_rx_urb(hw, rtlusb, _urb, GFP_ATOMIC);
+ if (IS_ERR(_skb)) {
+ err = PTR_ERR(_skb);
+ RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+ ("Can't allocate skb for bulk IN!\n"));
+ return;
+ }
+ skb = _skb;
+ } else{
+ /* TO DO */
+ _rtl_rx_pre_process(hw, skb);
+ printk(KERN_ERR "rtlwifi: rx agg not supported\n");
+ }
+ goto resubmit;
+ }
+
+ switch (_urb->status) {
+ /* disconnect */
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ENODEV:
+ case -ESHUTDOWN:
+ goto free;
+ default:
+ break;
+ }
+
+resubmit:
+ skb_reset_tail_pointer(skb);
+ skb_trim(skb, 0);
+
+ 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:
+ dev_kfree_skb_irq(skb);
+}
+
+static int _rtl_usb_receive(struct ieee80211_hw *hw)
+{
+ struct urb *urb;
+ struct sk_buff *skb;
+ 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;
+ }
+
+ skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
+ if (IS_ERR(skb)) {
+ RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
+ ("Failed to prep_rx_urb!!\n"))
+ err = PTR_ERR(skb);
+ 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);
+ 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);
+ 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 */
+ _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;
+
+ SET_USB_STOP(rtlusb);
+
+ /* clean up rx stuff. */
+ usb_kill_anchored_urbs(&rtlusb->rx_submitted);
+
+ /* 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);
+ /* Enable software */
+ SET_USB_STOP(rtlusb);
+ rtl_usb_deinit(hw);
+ 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;
+ struct sk_buff_head *skb_list;
+ struct usb_anchor *urb_list;
+
+ 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_list = &rtlusb->tx_skb_queue[ep_num];
+ _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"));
+ return;
+ }
+ urb_list = &rtlusb->tx_pending[ep_num];
+ _rtl_submit_tx_urb(hw, _urb);
+}
+
+static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, 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 ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+ u16 fc = le16_to_cpu(hdr->frame_control);
+ u8 *pda_addr = hdr->addr1;
+ /* ssn */
+ u8 *qc = NULL;
+ u8 tid = 0;
+ u16 seq_number = 0;
+
+ if (ieee80211_is_mgmt(fc))
+ rtl_tx_mgmt_proc(hw, skb);
+ 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, info, skb,
+ hw_queue);
+ 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 sk_buff *skb)
+{
+ 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);
+ u16 fc = le16_to_cpu(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, 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 sk_buff *skb)
+{
+ return false;
+}
+
+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 __devinit rtl_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ 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, ("%s : ieee80211 alloc failed\n", __func__));
+ return -ENOMEM;
+ }
+ rtlpriv = hw->priv;
+ 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 = (struct rtl_hal_cfg *)(id->driver_info);
+ 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);
+ 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 = _rtl_usb_init(hw);
+ err = _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;
+ }
+
+ /*init rfkill */
+ /* rtl_init_rfkill(hw); */
+
+ err = ieee80211_register_hw(hw);
+ if (err) {
+ RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
+ ("Can't register mac80211 hw.\n"));
+ goto error_out;
+ } else {
+ 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);
+ ieee80211_free_hw(hw);
+ usb_put_dev(udev);
+ 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;
+ /*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);
+ 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);

Privacy Policy