| /****************************************************************************** |
| * |
| * 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> |
| |
| #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 = kmalloc(sizeof(*dr), GFP_ATOMIC); |
| if (!dr) |
| return -ENOMEM; |
| |
| databuf = kmalloc(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, 0); /*max. timeout*/ |
| 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, |
| .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 = 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; |
| } |
| |
| 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; |
| __le16 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 = 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; |
| } |
| |
| 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 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 32 |
| |
| 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) |
| { |
| unsigned int padding = 0; |
| |
| /* make function no-op when possible */ |
| if (NET_IP_ALIGN == 0 || len < sizeof(*hdr)) |
| return 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; |
| } |
| |
| #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_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw)); |
| struct urb *urb; |
| |
| usb_kill_anchored_urbs(&rtlusb->rx_submitted); |
| |
| tasklet_kill(&rtlusb->rx_work_tasklet); |
| 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; |
| |
| SET_USB_STOP(rtlusb); |
| |
| /* 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); |
| 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; |
| |
| 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, 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); |
| |
| 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); |
| /*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); |