diff options
Diffstat (limited to 'drivers/net/wireless/rtlwifi/rtl8192ee/trx.c')
| -rw-r--r-- | drivers/net/wireless/rtlwifi/rtl8192ee/trx.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ee/trx.c b/drivers/net/wireless/rtlwifi/rtl8192ee/trx.c index 2b60bdc7452f..1245e2f53c8d 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192ee/trx.c +++ b/drivers/net/wireless/rtlwifi/rtl8192ee/trx.c @@ -555,6 +555,26 @@ static u16 get_desc_addr_fr_q_idx(u16 queue_index) return desc_address; } +u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx) +{ + struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); + struct rtl_priv *rtlpriv = rtl_priv(hw); + u16 point_diff = 0; + u16 current_tx_read_point = 0, current_tx_write_point = 0; + u32 tmp_4byte; + + tmp_4byte = rtl_read_dword(rtlpriv, + get_desc_addr_fr_q_idx(q_idx)); + current_tx_read_point = (u16)((tmp_4byte >> 16) & 0x0fff); + current_tx_write_point = (u16)((tmp_4byte) & 0x0fff); + + point_diff = calc_fifo_space(current_tx_read_point, + current_tx_write_point); + + rtlpci->tx_ring[q_idx].avl_desc = point_diff; + return point_diff; +} + void rtl92ee_pre_fill_tx_bd_desc(struct ieee80211_hw *hw, u8 *tx_bd_desc, u8 *desc, u8 queue_index, struct sk_buff *skb, dma_addr_t addr) |