/******************************************************************************
 *
 * Copyright(c) 2009-2010  Realtek Corporation.
 *
 * 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.
 *
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 *****************************************************************************/

#include "core.h"
#include "wifi.h"
#include "pci.h"
#include "base.h"
#include "ps.h"
#include "efuse.h"
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0))
#include <linux/export.h>
#endif

static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = {
        INTEL_VENDOR_ID,
        ATI_VENDOR_ID,
        AMD_VENDOR_ID,
        SIS_VENDOR_ID
};

static const u8 ac_to_hwq[] = {
        VO_QUEUE,
        VI_QUEUE,
        BE_QUEUE,
        BK_QUEUE
};

u8 _rtl_mac_to_hwqueue(struct ieee80211_hw *hw,
                struct sk_buff *skb)
{
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        u16 fc = rtl_get_fc(skb);
        u8 queue_index = skb_get_queue_mapping(skb);

        if (unlikely(ieee80211_is_beacon(fc)))
                return BEACON_QUEUE;
        if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
                return MGNT_QUEUE;
        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
                if (ieee80211_is_nullfunc(fc))
                        return HIGH_QUEUE;

        return ac_to_hwq[queue_index];
}

/* Update PCI dependent default settings*/
static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
        u8 init_aspm;

        ppsc->reg_rfps_level = 0;
        ppsc->b_support_aspm = 0;

        /*Update PCI ASPM setting */
        ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm;
        switch (rtlpci->const_pci_aspm) {
        case 0:
                /*No ASPM */
                break;

        case 1:
                /*ASPM dynamically enabled/disable. */
                ppsc->reg_rfps_level |= RT_RF_LPS_LEVEL_ASPM;
                break;

        case 2:
                /*ASPM with Clock Req dynamically enabled/disable. */
                ppsc->reg_rfps_level |= (RT_RF_LPS_LEVEL_ASPM |
                                         RT_RF_OFF_LEVL_CLK_REQ);
                break;

        case 3:
                /*
                 * Always enable ASPM and Clock Req
                 * from initialization to halt.
                 * */
                ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM);
                ppsc->reg_rfps_level |= (RT_RF_PS_LEVEL_ALWAYS_ASPM |
                                         RT_RF_OFF_LEVL_CLK_REQ);
                break;

        case 4:
                /*
                 * Always enable ASPM without Clock Req
                 * from initialization to halt.
                 * */
                ppsc->reg_rfps_level &= ~(RT_RF_LPS_LEVEL_ASPM |
                                          RT_RF_OFF_LEVL_CLK_REQ);
                ppsc->reg_rfps_level |= RT_RF_PS_LEVEL_ALWAYS_ASPM;
                break;
        }

        ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;

        /*Update Radio OFF setting */
        switch (rtlpci->const_hwsw_rfoff_d3) {
        case 1:
                if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
                        ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
                break;

        case 2:
                if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM)
                        ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_ASPM;
                ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_HALT_NIC;
                break;

        case 3:
                ppsc->reg_rfps_level |= RT_RF_OFF_LEVL_PCI_D3;
                break;
        }

        /*Set HW definition to determine if it supports ASPM. */
        switch (rtlpci->const_support_pciaspm) {
        case 0:{
                        /*Not support ASPM. */
                        bool b_support_aspm = false;
                        ppsc->b_support_aspm = b_support_aspm;
                        break;
                }
        case 1:{
                        /*Support ASPM. */
                        bool b_support_aspm = true;
                        bool b_support_backdoor = true;
                        ppsc->b_support_aspm = b_support_aspm;

                        /*if(priv->oem_id == RT_CID_TOSHIBA &&
                           !priv->ndis_adapter.amd_l1_patch)
                           b_support_backdoor = false; */

                        ppsc->b_support_backdoor = b_support_backdoor;

                        break;
                }
        case 2:
                /*ASPM value set by chipset. */
                if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL) {
                        bool b_support_aspm = true;
                        ppsc->b_support_aspm = b_support_aspm;
                }
                break;
        default:
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("switch case not process \n"));
                break;
        }

        /* toshiba aspm issue, toshiba will set aspm selfly
         * so we should not set aspm in driver */
        pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm);
        if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE &&
                init_aspm == 0x43)
                ppsc->b_support_aspm = false;
}

static bool _rtl_pci_platform_switch_device_pci_aspm(struct ieee80211_hw *hw,
                                                     u8 value)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        bool bresult = false;

        if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)
                value |= 0x40;

        pci_write_config_byte(rtlpci->pdev, 0x80, value);

        return bresult;
}

/*When we set 0x01 to enable clk request. Set 0x0 to disable clk req.*/
static bool _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u8 value)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        bool bresult = false;

        pci_write_config_byte(rtlpci->pdev, 0x81, value);
        bresult = true;

        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
                udelay(100);

        return bresult;
}

/*Disable RTL8192SE ASPM & Disable Pci Bridge ASPM*/
static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
        u32 pcicfg_addrport = pcipriv->ndis_adapter.pcicfg_addrport;
        u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
        /*Retrieve original configuration settings. */
        u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
        u16 pcibridge_linkctrlreg = pcipriv->ndis_adapter.
                                pcibridge_linkctrlreg;
        u16 aspmlevel = 0;

        if (!ppsc->b_support_aspm)
                return;

        if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
                RT_TRACE(COMP_POWER, DBG_TRACE,
                         ("PCI(Bridge) UNKNOWN.\n"));

                return;
        }

        if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
                RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
                _rtl_pci_switch_clk_req(hw, 0x0);
        }

        if (1) {
                /*for promising device will in L0 state after an I/O. */
                u8 tmp_u1b;
                pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b);
        }

        /*Set corresponding value. */
        aspmlevel |= BIT(0) | BIT(1);
        linkctrl_reg &= ~aspmlevel;
        pcibridge_linkctrlreg &= ~(BIT(0) | BIT(1));

        _rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg);
        udelay(50);

        /*4 Disable Pci Bridge ASPM */
        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                                     pcicfg_addrport + (num4bytes << 2));
        rtl_pci_raw_write_port_uchar(PCI_CONF_DATA, pcibridge_linkctrlreg);

        udelay(50);

}

/*
 *Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for
 *power saving We should follow the sequence to enable
 *RTL8192SE first then enable Pci Bridge ASPM
 *or the system will show bluescreen.
 */
static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
        u32 pcicfg_addrport = pcipriv->ndis_adapter.pcicfg_addrport;
        u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
        u16 aspmlevel;
        u8 u_pcibridge_aspmsetting;
        u8 u_device_aspmsetting;

        if (!ppsc->b_support_aspm)
                return;

        if (pcibridge_vendor == PCI_BRIDGE_VENDOR_UNKNOWN) {
                RT_TRACE(COMP_POWER, DBG_TRACE,
                         ("PCI(Bridge) UNKNOWN.\n"));
                return;
        }

        /*4 Enable Pci Bridge ASPM */
        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                                     pcicfg_addrport + (num4bytes << 2));

        u_pcibridge_aspmsetting =
            pcipriv->ndis_adapter.pcibridge_linkctrlreg |
            rtlpci->const_hostpci_aspm_setting;

        if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL)
                u_pcibridge_aspmsetting &= ~BIT(0);

        rtl_pci_raw_write_port_uchar(PCI_CONF_DATA, u_pcibridge_aspmsetting);

        RT_TRACE(COMP_INIT, DBG_LOUD,
                 ("PlatformEnableASPM(): Write reg[%x] = %x\n",
                  (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10),
                  u_pcibridge_aspmsetting));

        udelay(50);

        /*Get ASPM level (with/without Clock Req) */
        aspmlevel = rtlpci->const_devicepci_aspm_setting;
        u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg;

        /*_rtl_pci_platform_switch_device_pci_aspm(dev,*/
        /*(priv->ndis_adapter.linkctrl_reg | ASPMLevel)); */

        u_device_aspmsetting |= aspmlevel;

        _rtl_pci_platform_switch_device_pci_aspm(hw, u_device_aspmsetting);

        if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
                _rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level &
                                             RT_RF_OFF_LEVL_CLK_REQ) ? 1 : 0);
                RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
        }
        udelay(100);
}

static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw)
{
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        u32 pcicfg_addrport = pcipriv->ndis_adapter.pcicfg_addrport;

        bool status = false;
        u8 offset_e0;
        unsigned offset_e4;

        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                        pcicfg_addrport + 0xE0);
        rtl_pci_raw_write_port_uchar(PCI_CONF_DATA, 0xA0);

        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                        pcicfg_addrport + 0xE0);
        rtl_pci_raw_read_port_uchar(PCI_CONF_DATA, &offset_e0);

        if (offset_e0 == 0xA0) {
                rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                                             pcicfg_addrport + 0xE4);
                rtl_pci_raw_read_port_ulong(PCI_CONF_DATA, &offset_e4);
                if (offset_e4 & BIT(23))
                        status = true;
        }

        return status;
}

/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35))
static u8 _rtl_pci_get_pciehdr_offset(struct ieee80211_hw *hw)
{
        u8 capability_offset;
        u8 num4bytes = 0x34/4;
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        u32 pcicfg_addr_port = (pcipriv->ndis_adapter.pcibridge_busnum << 16)|
                               (pcipriv->ndis_adapter.pcibridge_devnum << 11)|
                               (pcipriv->ndis_adapter.pcibridge_funcnum << 8)|
                               (1 << 31);

        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS , pcicfg_addr_port
                                                        + (num4bytes << 2));
        rtl_pci_raw_read_port_uchar(PCI_CONF_DATA, &capability_offset);
        while (capability_offset != 0) {
                struct rtl_pci_capabilities_header capability_hdr;

                num4bytes = capability_offset / 4;
                /* Read the header of the capability at  this offset.
                 * If the retrieved capability is not the power management
                 * capability that we are looking for, follow the link to
                 * the next capability and continue looping.
                 */
                rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS , 
                                             pcicfg_addr_port + 
                                             (num4bytes << 2));
                rtl_pci_raw_read_port_ushort(PCI_CONF_DATA,
                                             (u16*)&capability_hdr);
                /* Found the PCI express capability. */
                if (capability_hdr.capability_id == 
                    PCI_CAPABILITY_ID_PCI_EXPRESS)
                        break;
                else
                        capability_offset = capability_hdr.next;
        }
        return capability_offset;
}
#endif
/*<delete in kernel end>*/

bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw,
                              struct rtl_priv **buddy_priv)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        bool b_find_buddy_priv = false;
        struct rtl_priv *temp_priv = NULL;
        struct rtl_pci_priv *temp_pcipriv = NULL;

        if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) {
                list_for_each_entry(temp_priv, &rtlpriv->glb_var->glb_priv_list,
                        list) {
                        if (temp_priv) {
                                temp_pcipriv = 
                                        (struct rtl_pci_priv *)temp_priv->priv;
                                RT_TRACE(COMP_INIT, DBG_LOUD,
                                        (("pcipriv->ndis_adapter.funcnumber %x \n"),
                                        pcipriv->ndis_adapter.funcnumber));
                                RT_TRACE(COMP_INIT, DBG_LOUD,
                                        (("temp_pcipriv->ndis_adapter.funcnumber %x \n"),
                                        temp_pcipriv->ndis_adapter.funcnumber));

                                if ((pcipriv->ndis_adapter.busnumber ==
                                        temp_pcipriv->ndis_adapter.busnumber) &&
                                    (pcipriv->ndis_adapter.devnumber ==
                                    temp_pcipriv->ndis_adapter.devnumber) &&
                                    (pcipriv->ndis_adapter.funcnumber !=
                                    temp_pcipriv->ndis_adapter.funcnumber)) {
                                        b_find_buddy_priv = true;
                                        break;
                                }
                        }
                }
        }

        RT_TRACE(COMP_INIT, DBG_LOUD,
                (("b_find_buddy_priv %d \n"), b_find_buddy_priv));

        if (b_find_buddy_priv)
                *buddy_priv = temp_priv;

        return b_find_buddy_priv;
}

void rtl_pci_get_linkcontrol_field(struct ieee80211_hw *hw)
{
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        u8 capabilityoffset = pcipriv->ndis_adapter.pcibridge_pciehdr_offset;
        u32 pcicfg_addrport = pcipriv->ndis_adapter.pcicfg_addrport;
        u8 linkctrl_reg;
        u8 num4bbytes;

        num4bbytes = (capabilityoffset + 0x10) / 4;

        /*Read  Link Control Register */
        rtl_pci_raw_write_port_ulong(PCI_CONF_ADDRESS,
                                     pcicfg_addrport + (num4bbytes << 2));
        rtl_pci_raw_read_port_uchar(PCI_CONF_DATA, &linkctrl_reg);

        pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg;
}

static void rtl_pci_parse_configuration(struct pci_dev *pdev,
                                        struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);

        u8 tmp;
        int pos;
        u8 linkctrl_reg;

        /*Link Control Register */
        pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
        pci_read_config_byte(pdev, pos + PCI_EXP_LNKCTL, &linkctrl_reg);
        pcipriv->ndis_adapter.linkctrl_reg = linkctrl_reg;

        RT_TRACE(COMP_INIT, DBG_TRACE,
                 ("Link Control Register =%x\n",
                  pcipriv->ndis_adapter.linkctrl_reg));

        pci_read_config_byte(pdev, 0x98, &tmp);
        tmp |= BIT(4);
        pci_write_config_byte(pdev, 0x98, tmp);

        tmp = 0x17;
        pci_write_config_byte(pdev, 0x70f, tmp);
}

static void rtl_pci_init_aspm(struct ieee80211_hw *hw)
{
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));

        _rtl_pci_update_default_setting(hw);

        if (ppsc->reg_rfps_level & RT_RF_PS_LEVEL_ALWAYS_ASPM) {
                /*Always enable ASPM & Clock Req. */
                rtl_pci_enable_aspm(hw);
                RT_SET_PS_LEVEL(ppsc, RT_RF_PS_LEVEL_ALWAYS_ASPM);
        }

}

static void _rtl_pci_io_handler_init(struct device *dev,
                                     struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        rtlpriv->io.dev = dev;

        rtlpriv->io.write8_async = pci_write8_async;
        rtlpriv->io.write16_async = pci_write16_async;
        rtlpriv->io.write32_async = pci_write32_async;

        rtlpriv->io.read8_sync = pci_read8_sync;
        rtlpriv->io.read16_sync = pci_read16_sync;
        rtlpriv->io.read32_sync = pci_read32_sync;

}

static bool _rtl_pci_update_earlymode_info(struct ieee80211_hw *hw,
                                           struct sk_buff *skb, 
                                           struct rtl_tcb_desc *tcb_desc, 
                                           u8 tid)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        u8 additionlen = FCS_LEN;
        struct sk_buff *next_skb;
                
        /* here open is 4, wep/tkip is 8, aes is 12*/
        if (info->control.hw_key)
                additionlen += info->control.hw_key->icv_len;

        /* The most skb num is 6 */
        tcb_desc->empkt_num = 0;
        spin_lock_bh(&rtlpriv->locks.waitq_lock);
        skb_queue_walk(&rtlpriv->mac80211.skb_waitq[tid], next_skb) {
                struct ieee80211_tx_info *next_info = 
                                        IEEE80211_SKB_CB(next_skb);
                if (next_info->flags & IEEE80211_TX_CTL_AMPDU) {
                        tcb_desc->empkt_len[tcb_desc->empkt_num] =
                                next_skb->len + additionlen;
                        tcb_desc->empkt_num++;
                } else {
                        break;
                }

                if (skb_queue_is_last(&rtlpriv->mac80211.skb_waitq[tid], 
                                      next_skb))
                        break;

                if (tcb_desc->empkt_num >= rtlhal->max_earlymode_num)
                        break;
        }
        spin_unlock_bh(&rtlpriv->locks.waitq_lock);
        return true;
}

/* just for early mode now */
static void _rtl_pci_tx_chk_waitq(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        struct sk_buff *skb = NULL;
        struct ieee80211_tx_info *info = NULL;
        int tid; /* should be int */
        
        if (!rtlpriv->rtlhal.b_earlymode_enable)
                return; 
        if (rtlpriv->dm.supp_phymode_switch &&
                (rtlpriv->easy_concurrent_ctl.bswitch_in_process ||
                (rtlpriv->buddy_priv && 
                 rtlpriv->buddy_priv->easy_concurrent_ctl.bswitch_in_process)))
                return;
        /* we juse use em for BE/BK/VI/VO */
        for (tid = 7; tid >= 0; tid--) {
                u8 hw_queue = ac_to_hwq[rtl_tid_to_ac(hw, tid)];
                struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
                while (!mac->act_scanning && 
                       rtlpriv->psc.rfpwr_state == ERFON) {
                        struct rtl_tcb_desc tcb_desc;
                        memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));                      

                        spin_lock_bh(&rtlpriv->locks.waitq_lock);
                        if (!skb_queue_empty(&mac->skb_waitq[tid]) &&
                            (ring->entries - skb_queue_len(&ring->queue) > 
                             rtlhal->max_earlymode_num)) {
                                skb = skb_dequeue(&mac->skb_waitq[tid]);
                        } else {
                                spin_unlock_bh(&rtlpriv->locks.waitq_lock);
                                break;
                        }
                        spin_unlock_bh(&rtlpriv->locks.waitq_lock);

                        /* Some macaddr can't do early mode. like
                         * multicast/broadcast/no_qos data */
                        info = IEEE80211_SKB_CB(skb);
                        if (info->flags & IEEE80211_TX_CTL_AMPDU)
                                _rtl_pci_update_earlymode_info(hw, skb, 
                                                               &tcb_desc, tid);

/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
                        rtlpriv->intf_ops->adapter_tx(hw, skb, &tcb_desc);
#else
/*<delete in kernel end>*/
                        rtlpriv->intf_ops->adapter_tx(hw, NULL, skb, &tcb_desc);
#endif
/*<delete in kernel end>*/
                }
        }
}

static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];

        while (skb_queue_len(&ring->queue)) {
                struct sk_buff *skb;
                struct ieee80211_tx_info *info;
                u16 fc;
                u8 tid;
                u8 *entry;

                
                if (rtlpriv->use_new_trx_flow)
                        entry = (u8 *)(&ring->buffer_desc[ring->idx]);
                else
                        entry = (u8 *)(&ring->desc[ring->idx]);

                if (!rtlpriv->cfg->ops->is_tx_desc_closed(hw, prio, ring->idx))
                        return;
                        
                ring->idx = (ring->idx + 1) % ring->entries;
                
                skb = __skb_dequeue(&ring->queue);
                
                pci_unmap_single(rtlpci->pdev,
                                 le32_to_cpu(rtlpriv->cfg->ops->
                                             get_desc((u8 *) entry, true,
                                                      HW_DESC_TXBUFF_ADDR)),
                                 skb->len, PCI_DMA_TODEVICE);

                /* remove early mode header */
                if(rtlpriv->rtlhal.b_earlymode_enable)
                        skb_pull(skb, EM_HDR_LEN);

                RT_TRACE((COMP_INTR | COMP_SEND), DBG_TRACE,
                         ("new ring->idx:%d, "
                          "free: skb_queue_len:%d, free: seq:%d\n",
                          ring->idx,
                          skb_queue_len(&ring->queue),
                          *(u16 *) (skb->data + 22)));

                if(prio == TXCMD_QUEUE) {
                        dev_kfree_skb(skb);
                        goto tx_status_ok;

                }

                /* for sw LPS, just after NULL skb send out, we can
                 * sure AP kown we are sleeped, our we should not let
                 * rf to sleep*/
                fc = rtl_get_fc(skb);
                if (ieee80211_is_nullfunc(fc)) {
                        if(ieee80211_has_pm(fc)) {
                                rtlpriv->mac80211.offchan_deley = true;
                                rtlpriv->psc.state_inap = 1;
                        } else {
                                rtlpriv->psc.state_inap = 0;
                        }
                }
                if (ieee80211_is_action(fc)) {
                        struct ieee80211_mgmt_compat *action_frame =
                                (struct ieee80211_mgmt_compat *)skb->data;
                        if (action_frame->u.action.u.ht_smps.action ==
                                WLAN_HT_ACTION_SMPS) {
                                dev_kfree_skb(skb);
                                goto tx_status_ok;
                        }
                }

                /* update tid tx pkt num */
                tid = rtl_get_tid(skb);
                if (tid <= 7)
                        rtlpriv->link_info.tidtx_inperiod[tid]++;

                info = IEEE80211_SKB_CB(skb);
                ieee80211_tx_info_clear_status(info);

                info->flags |= IEEE80211_TX_STAT_ACK;
                /*info->status.rates[0].count = 1; */

                ieee80211_tx_status_irqsafe(hw, skb);

                if ((ring->entries - skb_queue_len(&ring->queue))
                                == 2) {

                        RT_TRACE(COMP_ERR, DBG_LOUD,
                                        ("more desc left, wake"
                                         "skb_queue@%d,ring->idx = %d,"
                                         "skb_queue_len = 0x%d\n",
                                         prio, ring->idx,
                                         skb_queue_len(&ring->queue)));

                        ieee80211_wake_queue(hw,
                                        skb_get_queue_mapping
                                        (skb));
                }
tx_status_ok:
                skb = NULL;
        }

        if (((rtlpriv->link_info.num_rx_inperiod +
                rtlpriv->link_info.num_tx_inperiod) > 8) ||
                (rtlpriv->link_info.num_rx_inperiod > 2)) {
                rtl_lps_leave(hw);
        }
}

static int _rtl_pci_init_one_rxdesc(struct ieee80211_hw *hw,
        u8 *entry, int rxring_idx, int desc_idx)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        u32 bufferaddress;
        u8 tmp_one = 1;
        struct sk_buff *skb;

        skb = dev_alloc_skb(rtlpci->rxbuffersize);      
        if (!skb)
                return 0;
        rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb;

        /* just set skb->cb to mapping addr
         * for pci_unmap_single use */
        *((dma_addr_t *) skb->cb) = pci_map_single(rtlpci->pdev,
                                skb_tail_pointer(skb), rtlpci->rxbuffersize,
                                PCI_DMA_FROMDEVICE);
        bufferaddress = cpu_to_le32(*((dma_addr_t *) skb->cb));
        if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
                return 0;
        if (rtlpriv->use_new_trx_flow) {
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, false, 
                                            HW_DESC_RX_PREPARE,
                                            (u8 *) & bufferaddress);
        } else {        
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, false, 
                                            HW_DESC_RXBUFF_ADDR,
                                            (u8 *) & bufferaddress);
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, false, 
                                            HW_DESC_RXPKT_LEN,
                                            (u8 *) & rtlpci->rxbuffersize);
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, false, 
                                            HW_DESC_RXOWN,
                                            (u8 *) & tmp_one);
        }
        
        return 1;
}

/* inorder to receive 8K AMSDU we have set skb to
 * 9100bytes in init rx ring, but if this packet is
 * not a AMSDU, this so big packet will be sent to
 * TCP/IP directly, this cause big packet ping fail
 * like: "ping -s 65507", so here we will realloc skb
 * based on the true size of packet, I think mac80211
 * do it will be better, but now mac80211 haven't */

/* but some platform will fail when alloc skb sometimes.
 * in this condition, we will send the old skb to
 * mac80211 directly, this will not cause any other
 * issues, but only be losted by TCP/IP */
static void _rtl_pci_rx_to_mac80211(struct ieee80211_hw *hw,
        struct sk_buff *skb, struct ieee80211_rx_status rx_status)
{
        if (unlikely(!rtl_action_proc(hw, skb, false))) {
                dev_kfree_skb_any(skb);
        } else {
                struct sk_buff *uskb = NULL;
                u8 *pdata;
                
                uskb = dev_alloc_skb(skb->len + 128);
                if (likely(uskb)) {
                        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 {
                        ieee80211_rx_irqsafe(hw, skb);
                }       
        }
}

/*hsisr interrupt handler*/
static void _rtl_pci_hs_interrupt(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));

        rtl_write_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR], 
                       rtl_read_byte(rtlpriv, rtlpriv->cfg->maps[MAC_HSISR]) | 
                       rtlpci->sys_irq_mask);

        
}
static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        int rxring_idx = RTL_PCI_RX_MPDU_QUEUE;

        struct ieee80211_rx_status rx_status = { 0 };
        unsigned int count = rtlpci->rxringcount;
        bool unicast = false;
        u8 hw_queue = 0;
        unsigned int rx_remained_cnt;
        u8 own;
        u8 tmp_one;

        struct rtl_stats status = {
                .signal = 0,
                .noise = -98,
                .rate = 0,
        };
        
        /*RX NORMAL PKT */
        while (count--) {
                struct ieee80211_hdr *hdr;
                u16 fc;
                u16 len;
                /*rx buffer descriptor */
                struct rtl_rx_buffer_desc *buffer_desc = NULL;
                /*if use new trx flow, it means wifi info */
                struct rtl_rx_desc *pdesc = NULL;
                /*rx pkt */
                struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[
                                        rtlpci->rx_ring[rxring_idx].idx];
                
                if (rtlpriv->use_new_trx_flow) {
                        rx_remained_cnt = 
                                rtlpriv->cfg->ops->rx_desc_buff_remained_cnt(hw,
                                                                      hw_queue);
                        if (rx_remained_cnt < 1) 
                                return;
                        
                } else {        /* rx descriptor */
                        pdesc = &rtlpci->rx_ring[rxring_idx].desc[
                                rtlpci->rx_ring[rxring_idx].idx];
                        
                        own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
                                                               false, 
                                                               HW_DESC_OWN);
                        if (own) /* wait data to be filled by hardware */
                                return;
                }
                
                /* Get here means: data is filled already*/
                /* AAAAAAttention !!!
                 * We can NOT access 'skb' before 'pci_unmap_single' */
                pci_unmap_single(rtlpci->pdev, *((dma_addr_t *) skb->cb),
                                 rtlpci->rxbuffersize, PCI_DMA_FROMDEVICE);
                
                if (rtlpriv->use_new_trx_flow) {
                        buffer_desc = &rtlpci->rx_ring[rxring_idx].buffer_desc[
                                rtlpci->rx_ring[rxring_idx].idx];
                        /*means rx wifi info*/
                        pdesc = (struct rtl_rx_desc *)skb->data;
                }
                
                rtlpriv->cfg->ops->query_rx_desc(hw, &status,
                                                 &rx_status, (u8 *) pdesc, skb);
                        
                if (rtlpriv->use_new_trx_flow)
                        rtlpriv->cfg->ops->rx_check_dma_ok(hw, 
                                                           (u8 *)buffer_desc, 
                                                           hw_queue);

                        
                len = rtlpriv->cfg->ops->get_desc((u8 *)pdesc, false, 
                                                  HW_DESC_RXPKT_LEN);
                        
                if (skb->end - skb->tail > len) {
                        skb_put(skb, len);
                        if (rtlpriv->use_new_trx_flow)  
                                skb_reserve(skb, status.rx_drvinfo_size + 
                                                 status.rx_bufshift + 24);
                        else
                                skb_reserve(skb, status.rx_drvinfo_size + 
                                                 status.rx_bufshift);

                } else {
                        printk("skb->end - skb->tail = %d, len is %d\n", 
                               skb->end - skb->tail, len);
                        break;
                }
                        
                rtlpriv->cfg->ops->rx_command_packet_handler(hw, status, skb);

                /*
                 *NOTICE This can not be use for mac80211,
                 *this is done in mac80211 code,
                 *if you done here sec DHCP will fail
                 *skb_trim(skb, skb->len - 4);
                 */

                hdr = rtl_get_hdr(skb);
                fc = rtl_get_fc(skb);
                
                if (!status.b_crc && !status.b_hwerror) {
                        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);
                        rtl_p2p_info(hw, (void*)skb->data, skb->len);   
                        /* for sw lps */
                        rtl_swlps_beacon(hw, (void*)skb->data, skb->len);
                        rtl_recognize_peer(hw, (void*)skb->data, skb->len);
                        if ((rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP) &&
                            (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)&&
                            (ieee80211_is_beacon(fc) || 
                             ieee80211_is_probe_resp(fc))) {
                                dev_kfree_skb_any(skb);
                        } else {
                                _rtl_pci_rx_to_mac80211(hw, skb, rx_status);
                        }
                } else {
                        dev_kfree_skb_any(skb);
                }
                if (rtlpriv->use_new_trx_flow) {
                        rtlpci->rx_ring[hw_queue].next_rx_rp += 1;
                        rtlpci->rx_ring[hw_queue].next_rx_rp %= 
                                                        RTL_PCI_MAX_RX_COUNT;


                        rx_remained_cnt--;
                        if (1/*rx_remained_cnt == 0*/) {
                                rtl_write_word(rtlpriv, 0x3B4, 
                                        rtlpci->rx_ring[hw_queue].next_rx_rp);
                        }
                }
                if (((rtlpriv->link_info.num_rx_inperiod +
                      rtlpriv->link_info.num_tx_inperiod) > 8) ||
                    (rtlpriv->link_info.num_rx_inperiod > 2)) {
                        rtl_lps_leave(hw);
                }

                if (rtlpriv->use_new_trx_flow) {
                        _rtl_pci_init_one_rxdesc(hw, (u8 *)buffer_desc, 
                                                 rxring_idx,
                                               rtlpci->rx_ring[rxring_idx].idx);                        
                } else {
                        _rtl_pci_init_one_rxdesc(hw, (u8 *)pdesc, rxring_idx,
                                               rtlpci->rx_ring[rxring_idx].idx);                        

                        if (rtlpci->rx_ring[rxring_idx].idx == 
                            rtlpci->rxringcount - 1)
                                rtlpriv->cfg->ops->set_desc(hw, (u8 *) pdesc, 
                                                            false, 
                                                            HW_DESC_RXERO,
                                                            (u8 *) & tmp_one);
                }
                rtlpci->rx_ring[rxring_idx].idx = 
                                (rtlpci->rx_ring[rxring_idx].idx + 1) % 
                                rtlpci->rxringcount;

        }
}

static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
{
        struct ieee80211_hw *hw = dev_id;
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        unsigned long flags;
        u32 inta = 0;
        u32 intb = 0;

        

        if (rtlpci->irq_enabled == 0)
                return IRQ_HANDLED;

        spin_lock_irqsave(&rtlpriv->locks.irq_th_lock,flags);


        rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[MAC_HIMR], 0x0);
        

        rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[MAC_HIMRE], 0x0);


        /*read ISR: 4/8bytes */
        rtlpriv->cfg->ops->interrupt_recognized(hw, &inta, &intb);


        /*Shared IRQ or HW disappared */
        if (!inta || inta == 0xffff)
                goto done;
        /*<1> beacon related */
        if (inta & rtlpriv->cfg->maps[RTL_IMR_TBDOK]) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("beacon ok interrupt!\n"));
        }

        if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_TBDER])) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("beacon err interrupt!\n"));
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_BDOK]) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("beacon interrupt!\n"));
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_BcnInt]) {
                RT_TRACE(COMP_INTR, DBG_TRACE,
                         ("prepare beacon for interrupt!\n"));
                tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet);
        }


        /*<2> tx related */
        if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
                RT_TRACE(COMP_ERR, DBG_TRACE, ("IMR_TXFOVW!\n"));

        if (inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("Manage ok interrupt!\n"));
                _rtl_pci_tx_isr(hw, MGNT_QUEUE);
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_HIGHDOK]) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("HIGH_QUEUE ok interrupt!\n"));
                _rtl_pci_tx_isr(hw, HIGH_QUEUE);
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_BKDOK]) {
                rtlpriv->link_info.num_tx_inperiod++;

                RT_TRACE(COMP_INTR, DBG_TRACE, ("BK Tx OK interrupt!\n"));
                _rtl_pci_tx_isr(hw, BK_QUEUE);
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_BEDOK]) {
                rtlpriv->link_info.num_tx_inperiod++;

                RT_TRACE(COMP_INTR, DBG_TRACE, ("BE TX OK interrupt!\n"));
                _rtl_pci_tx_isr(hw, BE_QUEUE);
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_VIDOK]) {
                rtlpriv->link_info.num_tx_inperiod++;

                RT_TRACE(COMP_INTR, DBG_TRACE, ("VI TX OK interrupt!\n"));
                _rtl_pci_tx_isr(hw, VI_QUEUE);
        }

        if (inta & rtlpriv->cfg->maps[RTL_IMR_VODOK]) {
                rtlpriv->link_info.num_tx_inperiod++;

                RT_TRACE(COMP_INTR, DBG_TRACE, ("Vo TX OK interrupt!\n"));
                _rtl_pci_tx_isr(hw, VO_QUEUE);
        }

        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE) {
                if (inta & rtlpriv->cfg->maps[RTL_IMR_COMDOK]) {
                        rtlpriv->link_info.num_tx_inperiod++;

                        RT_TRACE(COMP_INTR, DBG_TRACE,
                                 ("CMD TX OK interrupt!\n"));
                        _rtl_pci_tx_isr(hw, TXCMD_QUEUE);
                }
        }

        /*<3> rx related */
        if (inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) {
                RT_TRACE(COMP_INTR, DBG_TRACE, ("Rx ok interrupt!\n"));

                _rtl_pci_rx_interrupt(hw);

        }

        if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_RDU])) {
                RT_TRACE(COMP_ERR, DBG_WARNING,
                         ("rx descriptor unavailable!\n"));
                rtl_write_byte(rtlpriv, 0xb4, BIT(1) );
                _rtl_pci_rx_interrupt(hw);
        }

        if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
                RT_TRACE(COMP_ERR, DBG_WARNING, ("rx overflow !\n"));
                _rtl_pci_rx_interrupt(hw);
        }

        /*<4> fw related*/
        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) {
                if (inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) {
                        RT_TRACE(COMP_INTR, DBG_TRACE, 
                                 ("firmware interrupt!\n"));
                        queue_delayed_work(rtlpriv->works.rtl_wq,
                                           &rtlpriv->works.fwevt_wq, 0);
                }
        }

        /*<5> hsisr related*/
        /* Only 8188EE & 8723BE Supported.
         * If Other ICs Come in, System will corrupt,
         * because maps[RTL_IMR_HSISR_IND] & maps[MAC_HSISR]
         * are not initialized*/
        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8188EE ||
            rtlhal->hw_type == HARDWARE_TYPE_RTL8723BE) {
                if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_HSISR_IND])) {
                        RT_TRACE(COMP_INTR, DBG_TRACE, 
                                         ("hsisr interrupt!\n"));
                        _rtl_pci_hs_interrupt(hw);
                }
        }
        

        if(rtlpriv->rtlhal.b_earlymode_enable)
                tasklet_schedule(&rtlpriv->works.irq_tasklet);

        rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[MAC_HIMR],
                        rtlpci->irq_mask[0]);
        rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[MAC_HIMRE],
                        rtlpci->irq_mask[1]);
        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
        
        return IRQ_HANDLED;

done:
        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
        return IRQ_HANDLED;
}

static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
{
        _rtl_pci_tx_chk_waitq(hw);
}

static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
        struct rtl8192_tx_ring *ring = NULL;
        struct ieee80211_hdr *hdr = NULL;
        struct ieee80211_tx_info *info = NULL;
        struct sk_buff *pskb = NULL;
        struct rtl_tx_desc *pdesc = NULL;
        struct rtl_tcb_desc tcb_desc;
        /*This is for new trx flow*/
        struct rtl_tx_buffer_desc *pbuffer_desc = NULL;
        u8 temp_one = 1;

        memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
        ring = &rtlpci->tx_ring[BEACON_QUEUE];
        pskb = __skb_dequeue(&ring->queue);
        if (pskb)
                kfree_skb(pskb);

        /*NB: the beacon data buffer must be 32-bit aligned. */
        pskb = ieee80211_beacon_get(hw, mac->vif);
        if (pskb == NULL)
                return;
        hdr = rtl_get_hdr(pskb);
        info = IEEE80211_SKB_CB(pskb);
        pdesc = &ring->desc[0];
        if (rtlpriv->use_new_trx_flow)
                pbuffer_desc = &ring->buffer_desc[0];
        
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
        rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc, 
                                        (u8 *)pbuffer_desc, info, pskb, 
                                        BEACON_QUEUE, &tcb_desc);
#else
/*<delete in kernel end>*/
        rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc,
                                        (u8 *)pbuffer_desc, info, NULL, pskb, 
                                        BEACON_QUEUE, &tcb_desc);
/*<delete in kernel start>*/
#endif
/*<delete in kernel end>*/

        __skb_queue_tail(&ring->queue, pskb);

        rtlpriv->cfg->ops->set_desc(hw, (u8 *) pdesc, true, HW_DESC_OWN,
                                    (u8 *) & temp_one);

        return;
}

static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
        u8 i;
        u16 desc_num;

        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE)
                desc_num = TX_DESC_NUM_92E;
        else
                desc_num = RT_TXDESC_NUM;
        
        for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
                rtlpci->txringcount[i] = desc_num;
        }
        /*
         *we just alloc 2 desc for beacon queue,
         *because we just need first desc in hw beacon.
         */
        rtlpci->txringcount[BEACON_QUEUE] = 2;

        /*
         *BE queue need more descriptor for performance
         *consideration or, No more tx desc will happen,
         *and may cause mac80211 mem leakage.
         */
        if (rtl_priv(hw)->use_new_trx_flow == false)
                rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;

        rtlpci->rxbuffersize = 9100;    /*2048/1024; */
        rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT;     /*64; */
}

static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
                struct pci_dev *pdev)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));

        rtlpriv->rtlhal.up_first_time = true;
        rtlpriv->rtlhal.being_init_adapter = false;

        rtlhal->hw = hw;
        rtlpci->pdev = pdev;

        /*Tx/Rx related var */
        _rtl_pci_init_trx_var(hw);

        /*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*/
        rtlpci->acm_method = eAcmWay2_SW;

        /*task */
        tasklet_init(&rtlpriv->works.irq_tasklet,
                     (void (*)(unsigned long))_rtl_pci_irq_tasklet,
                     (unsigned long)hw);
        tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
                     (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
                     (unsigned long)hw);
}

static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
                                 unsigned int prio, unsigned int entries)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_tx_buffer_desc *buffer_desc;
        struct rtl_tx_desc *desc;
        dma_addr_t buffer_desc_dma, desc_dma;
        u32 nextdescaddress;
        int i;

        /* alloc tx buffer desc for new trx flow*/
        if (rtlpriv->use_new_trx_flow) {
                buffer_desc = pci_alloc_consistent(rtlpci->pdev,
                                            sizeof(*buffer_desc) * entries, 
                                            &buffer_desc_dma);

                if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) {
                        RT_TRACE(COMP_ERR, DBG_EMERG,
                                 ("Cannot allocate TX ring (prio = %d)\n", 
                                 prio));
                        return -ENOMEM;
                }

                memset(buffer_desc, 0, sizeof(*buffer_desc) * entries);
                rtlpci->tx_ring[prio].buffer_desc = buffer_desc;
                rtlpci->tx_ring[prio].buffer_desc_dma = buffer_desc_dma;
                
                rtlpci->tx_ring[prio].cur_tx_rp = 0;
                rtlpci->tx_ring[prio].cur_tx_wp = 0;
                rtlpci->tx_ring[prio].avl_desc = entries;

        }
        
        /* alloc dma for this ring */
        desc = pci_alloc_consistent(rtlpci->pdev,
                                    sizeof(*desc) * entries, &desc_dma);

        if (!desc || (unsigned long)desc & 0xFF) {
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("Cannot allocate TX ring (prio = %d)\n", prio));
                return -ENOMEM;
        }

        memset(desc, 0, sizeof(*desc) * entries);
        rtlpci->tx_ring[prio].desc = desc;
        rtlpci->tx_ring[prio].dma = desc_dma;
        
        rtlpci->tx_ring[prio].idx = 0;
        rtlpci->tx_ring[prio].entries = entries;
        skb_queue_head_init(&rtlpci->tx_ring[prio].queue);
        RT_TRACE(COMP_INIT, DBG_LOUD,
                 ("queue:%d, ring_addr:%p\n", prio, desc));

        /* init every desc in this ring */
        if (rtlpriv->use_new_trx_flow == false) {
                for (i = 0; i < entries; i++) {
                        nextdescaddress = cpu_to_le32((u32) desc_dma +
                                                      ((i +     1) % entries) *
                                                      sizeof(*desc));

                        rtlpriv->cfg->ops->set_desc(hw, (u8 *) & (desc[i]),
                                                    true, 
                                                    HW_DESC_TX_NEXTDESC_ADDR,
                                                    (u8 *) & nextdescaddress);
                }
        }
        return 0;
}

static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        int i;
        
        if (rtlpriv->use_new_trx_flow) {
                struct rtl_rx_buffer_desc *entry = NULL;
                /* alloc dma for this ring */
                rtlpci->rx_ring[rxring_idx].buffer_desc = 
                    pci_alloc_consistent(rtlpci->pdev,
                                         sizeof(*rtlpci->rx_ring[rxring_idx].
                                                buffer_desc) * 
                                                rtlpci->rxringcount, 
                                         &rtlpci->rx_ring[rxring_idx].dma);
                if (!rtlpci->rx_ring[rxring_idx].buffer_desc ||
                    (unsigned long)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) {
                        RT_TRACE(COMP_ERR, DBG_EMERG, ("Cannot allocate RX ring\n"));
                        return -ENOMEM;
                }

                memset(rtlpci->rx_ring[rxring_idx].buffer_desc, 0,
                       sizeof(*rtlpci->rx_ring[rxring_idx].buffer_desc) *
                       rtlpci->rxringcount);

                /* init every desc in this ring */
                rtlpci->rx_ring[rxring_idx].idx = 0;
                for (i = 0; i < rtlpci->rxringcount; i++) {                     
                        entry = &rtlpci->rx_ring[rxring_idx].buffer_desc[i];
                        if (!_rtl_pci_init_one_rxdesc(hw, (u8 *)entry, 
                                                      rxring_idx, i))
                                return -ENOMEM;
                }
        } else {
                struct rtl_rx_desc *entry = NULL;
                u8 tmp_one = 1;
                /* alloc dma for this ring */
                rtlpci->rx_ring[rxring_idx].desc = 
                    pci_alloc_consistent(rtlpci->pdev,
                                         sizeof(*rtlpci->rx_ring[rxring_idx].
                                                desc) * rtlpci->rxringcount, 
                                         &rtlpci->rx_ring[rxring_idx].dma);
                if (!rtlpci->rx_ring[rxring_idx].desc ||
                    (unsigned long)rtlpci->rx_ring[rxring_idx].desc & 0xFF) {
                        RT_TRACE(COMP_ERR, DBG_EMERG, 
                                 ("Cannot allocate RX ring\n"));
                        return -ENOMEM;
                }

                memset(rtlpci->rx_ring[rxring_idx].desc, 0,
                       sizeof(*rtlpci->rx_ring[rxring_idx].desc) *
                       rtlpci->rxringcount);

                /* init every desc in this ring */
                rtlpci->rx_ring[rxring_idx].idx = 0;
                for (i = 0; i < rtlpci->rxringcount; i++) {                     
                        entry = &rtlpci->rx_ring[rxring_idx].desc[i];
                        if (!_rtl_pci_init_one_rxdesc(hw, (u8 *)entry, 
                                                      rxring_idx, i))
                                return -ENOMEM;
                }
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, false,
                                            HW_DESC_RXERO, (u8 *) & tmp_one);
        }
        return 0;
}

static void _rtl_pci_free_tx_ring(struct ieee80211_hw *hw,
                                  unsigned int prio)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];

        /* free every desc in this ring */
        while (skb_queue_len(&ring->queue)) {
                u8 *entry;
                struct sk_buff *skb = __skb_dequeue(&ring->queue);
                if (rtlpriv->use_new_trx_flow)
                        entry = (u8 *)(&ring->buffer_desc[ring->idx]);
                else
                        entry = (u8 *)(&ring->desc[ring->idx]);

                pci_unmap_single(rtlpci->pdev,
                                 le32_to_cpu(rtlpriv->cfg->ops->get_desc(
                                 (u8 *) entry, true, HW_DESC_TXBUFF_ADDR)),
                                 skb->len, PCI_DMA_TODEVICE);
                kfree_skb(skb);
                ring->idx = (ring->idx + 1) % ring->entries;
        }

        /* free dma of this ring */
        pci_free_consistent(rtlpci->pdev,
                            sizeof(*ring->desc) * ring->entries,
                            ring->desc, ring->dma);
        ring->desc = NULL;
        if (rtlpriv->use_new_trx_flow) {
                pci_free_consistent(rtlpci->pdev,
                                    sizeof(*ring->buffer_desc) * ring->entries,
                                    ring->buffer_desc, ring->buffer_desc_dma);
                ring->buffer_desc = NULL;
        }       
}

static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        int i;

        /* free every desc in this ring */
        for (i = 0; i < rtlpci->rxringcount; i++) {
                struct sk_buff *skb = rtlpci->rx_ring[rxring_idx].rx_buf[i];
                if (!skb)
                        continue;

                pci_unmap_single(rtlpci->pdev, *((dma_addr_t *) skb->cb),
                                 rtlpci->rxbuffersize, PCI_DMA_FROMDEVICE);
                kfree_skb(skb);
        }

        /* free dma of this ring */
        if (rtlpriv->use_new_trx_flow) {
                pci_free_consistent(rtlpci->pdev,
                                    sizeof(*rtlpci->rx_ring[rxring_idx].
                                           buffer_desc) * rtlpci->rxringcount,
                                    rtlpci->rx_ring[rxring_idx].buffer_desc,
                                    rtlpci->rx_ring[rxring_idx].dma);
                rtlpci->rx_ring[rxring_idx].buffer_desc = NULL;
        } else {
                pci_free_consistent(rtlpci->pdev,
                                    sizeof(*rtlpci->rx_ring[rxring_idx].desc) *
                                    rtlpci->rxringcount,
                                    rtlpci->rx_ring[rxring_idx].desc,
                                    rtlpci->rx_ring[rxring_idx].dma);
                rtlpci->rx_ring[rxring_idx].desc = NULL;
        }
}

static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
{
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        int ret;
        int i, rxring_idx;

        /* rxring_idx 0:RX_MPDU_QUEUE
         * rxring_idx 1:RX_CMD_QUEUE */
        for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
                ret = _rtl_pci_init_rx_ring(hw, rxring_idx);
                if (ret)
                        return ret;
        }

        for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
                ret = _rtl_pci_init_tx_ring(hw, i, rtlpci->txringcount[i]);
                if (ret)
                        goto err_free_rings;
        }

        return 0;

err_free_rings:
        for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
                _rtl_pci_free_rx_ring(hw, rxring_idx);

        for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
                if (rtlpci->tx_ring[i].desc || 
                    rtlpci->tx_ring[i].buffer_desc)
                        _rtl_pci_free_tx_ring(hw, i);

        return 1;
}

static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw)
{
        u32 i, rxring_idx;

        /*free rx rings */
        for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++)
                _rtl_pci_free_rx_ring(hw, rxring_idx);

        /*free tx rings */
        for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++)
                _rtl_pci_free_tx_ring(hw, i);

        return 0;
}

int rtl_pci_reset_trx_ring(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        int i, rxring_idx;
        unsigned long flags;
        u8 tmp_one = 1;
        /* rxring_idx 0:RX_MPDU_QUEUE */
        /* rxring_idx 1:RX_CMD_QUEUE */
        for (rxring_idx = 0; rxring_idx < RTL_PCI_MAX_RX_QUEUE; rxring_idx++) {
                /* force the rx_ring[RX_MPDU_QUEUE/
                 * RX_CMD_QUEUE].idx to the first one */
                /*new trx flow, do nothing*/
                if ((rtlpriv->use_new_trx_flow == false) && 
                     rtlpci->rx_ring[rxring_idx].desc) {
                        struct rtl_rx_desc *entry = NULL;

                        for (i = 0; i < rtlpci->rxringcount; i++) {
                                entry = &rtlpci->rx_ring[rxring_idx].desc[i];                   
                                rtlpriv->cfg->ops->set_desc(hw, (u8 *) entry, 
                                                            false,
                                                            HW_DESC_RXOWN, 
                                                            (u8 *) & tmp_one);          
                        }
                }
                rtlpci->rx_ring[rxring_idx].idx = 0;    }

        /* after reset, release previous pending packet,
         * and force the  tx idx to the first one */
        spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
        for (i = 0; i < RTL_PCI_MAX_TX_QUEUE_COUNT; i++) {
                if (rtlpci->tx_ring[i].desc || 
                        rtlpci->tx_ring[i].buffer_desc) {
                        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[i];

                        while (skb_queue_len(&ring->queue)) {
                                u8 *entry;
                                struct sk_buff *skb = 
                                        __skb_dequeue(&ring->queue);
                                if (rtlpriv->use_new_trx_flow)
                                        entry = (u8 *)(&ring->buffer_desc
                                                                [ring->idx]);
                                else
                                        entry = (u8 *)(&ring->desc[ring->idx]);

                                pci_unmap_single(rtlpci->pdev,
                                        le32_to_cpu(rtlpriv->cfg->ops->get_desc(
                                                        (u8 *)entry, true,
                                                        HW_DESC_TXBUFF_ADDR)),
                                        skb->len, PCI_DMA_TODEVICE);
                                kfree_skb(skb);
                                ring->idx = (ring->idx + 1) % ring->entries;
                        }
                        ring->idx = 0;
                }
        }

        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);

        return 0;
}

/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw, 
                                        struct sk_buff *skb)
#else
/*<delete in kernel end>*/
static bool rtl_pci_tx_chk_waitq_insert(struct ieee80211_hw *hw,
                                        struct ieee80211_sta *sta,
                                        struct sk_buff *skb)
/*<delete in kernel start>*/
#endif
/*<delete in kernel end>*/
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
        struct ieee80211_sta *sta = info->control.sta;
#endif
/*<delete in kernel end>*/
        struct rtl_sta_info *sta_entry = NULL;
        u8 tid = rtl_get_tid(skb);
        u16 fc = rtl_get_fc(skb);

        if(!sta)
                return false;
        sta_entry = (struct rtl_sta_info *)sta->drv_priv;

        if (!rtlpriv->rtlhal.b_earlymode_enable)
                return false;
        if (ieee80211_is_nullfunc(fc))
                return false;
        if (ieee80211_is_qos_nullfunc(fc))
                return false;
        if (ieee80211_is_pspoll(fc)) {
                return false;
        }

        if (sta_entry->tids[tid].agg.agg_state != RTL_AGG_OPERATIONAL)
                return false;
        if (_rtl_mac_to_hwqueue(hw, skb) > VO_QUEUE)
                return false;
        if (tid > 7)
                return false;
        /* maybe every tid should be checked */
        if (!rtlpriv->link_info.higher_busytxtraffic[tid])
                return false;

        spin_lock_bh(&rtlpriv->locks.waitq_lock);
        skb_queue_tail(&rtlpriv->mac80211.skb_waitq[tid], skb);
        spin_unlock_bh(&rtlpriv->locks.waitq_lock);

        return true;
}

/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
int rtl_pci_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
               struct rtl_tcb_desc *ptcb_desc)
#else
/*<delete in kernel end>*/
static int rtl_pci_tx(struct ieee80211_hw *hw,
                      struct ieee80211_sta *sta,
                      struct sk_buff *skb,
                      struct rtl_tcb_desc *ptcb_desc)
/*<delete in kernel start>*/
#endif
/*<delete in kernel end>*/
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_sta_info *sta_entry = NULL;
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
        struct ieee80211_sta *sta = info->control.sta;
#endif
/*<delete in kernel end>*/
        struct rtl8192_tx_ring *ring;
        struct rtl_tx_desc *pdesc;
        struct rtl_tx_buffer_desc *ptx_bd_desc = NULL;
        u16 idx;
        u8 own;
        u8 temp_one = 1;
        u8 hw_queue = _rtl_mac_to_hwqueue(hw, skb);
        unsigned long flags;
        struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
        u16 fc = rtl_get_fc(skb);
        u8 *pda_addr = hdr->addr1;
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
        /*ssn */
        u8 tid = 0;
        u16 seq_number = 0;


        if (ieee80211_is_mgmt(fc))
                rtl_tx_mgmt_proc(hw, skb);

        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;

        spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
        ring = &rtlpci->tx_ring[hw_queue];
        if (hw_queue != BEACON_QUEUE) {
                if (rtlpriv->use_new_trx_flow)
                        idx = ring->cur_tx_wp;
                else
                        idx = (ring->idx + skb_queue_len(&ring->queue)) %
                              ring->entries;
        } else {
                idx = 0;
        }

        pdesc = &ring->desc[idx];
        
        if (rtlpriv->use_new_trx_flow) {
                ptx_bd_desc = &ring->buffer_desc[idx];
        } else {        
                own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
                                true, HW_DESC_OWN);

                if ((own == 1) && (hw_queue != BEACON_QUEUE)) {
                        RT_TRACE(COMP_ERR, DBG_WARNING,
                                 ("No more TX desc@%d, ring->idx = %d,"
                                  "idx = %d, skb_queue_len = 0x%d\n",
                                  hw_queue, ring->idx, idx,
                                  skb_queue_len(&ring->queue)));

                        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, 
                                               flags);
                        return skb->len;
                }
        }
        
        if (ieee80211_is_data_qos(fc)) {
                tid = rtl_get_tid(skb);
                if (sta) {
                        sta_entry = (struct rtl_sta_info *)sta->drv_priv;
                        seq_number = (le16_to_cpu(hdr->seq_ctrl) & 
                                      IEEE80211_SCTL_SEQ) >> 4;
                        seq_number += 1;

                        if (!ieee80211_has_morefrags(hdr->frame_control))
                                sta_entry->tids[tid].seq_number = seq_number;
                }
        }

        if (ieee80211_is_data(fc))
                rtlpriv->cfg->ops->led_control(hw, LED_CTL_TX);

/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0))
        rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc, 
                                        (u8 *)ptx_bd_desc, info, skb, 
                                        hw_queue, ptcb_desc);
#else
/*<delete in kernel end>*/
        rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc, 
                                        (u8 *)ptx_bd_desc, info, sta, skb, 
                                        hw_queue, ptcb_desc);
/*<delete in kernel start>*/
#endif
/*<delete in kernel end>*/

        __skb_queue_tail(&ring->queue, skb);
        if (rtlpriv->use_new_trx_flow) {
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) pdesc, true,
                                            HW_DESC_OWN, (u8 *) & hw_queue);
        } else {
                rtlpriv->cfg->ops->set_desc(hw, (u8 *) pdesc, true,
                                            HW_DESC_OWN, (u8 *) & temp_one);
        }

        if ((ring->entries - skb_queue_len(&ring->queue)) < 2 &&
            hw_queue != BEACON_QUEUE) {

                RT_TRACE(COMP_ERR, DBG_LOUD,
                         ("less desc left, stop skb_queue@%d, "
                          "ring->idx = %d,"
                          "idx = %d, skb_queue_len = 0x%d\n",
                          hw_queue, ring->idx, idx,
                          skb_queue_len(&ring->queue)));

                ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
        }

        spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);

        rtlpriv->cfg->ops->tx_polling(hw, hw_queue);

        return 0;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
static void rtl_pci_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
#else
static void rtl_pci_flush(struct ieee80211_hw *hw, bool drop)
#endif
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        u16 i = 0;
        int queue_id;
        struct rtl8192_tx_ring *ring;
        
        if (mac->skip_scan)
                return;
        
        for (queue_id = RTL_PCI_MAX_TX_QUEUE_COUNT - 1; queue_id >= 0;) {
                u32 queue_len;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
                if (((queues >> queue_id) & 0x1) == 0) {
                        queue_id--;
                        continue;
                }
#endif
                ring = &pcipriv->dev.tx_ring[queue_id];
                queue_len = skb_queue_len(&ring->queue);
                if (queue_len == 0 || queue_id == BEACON_QUEUE ||
                        queue_id == TXCMD_QUEUE) {
                        queue_id--;
                        continue;
                } else {
                        msleep(5);
                        i++;
                }

                /* we just wait 1s for all queues */
                if (rtlpriv->psc.rfpwr_state == ERFOFF ||
                        is_hal_stop(rtlhal) || i >= 200)
                        return;
        }
}

void rtl_pci_deinit(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));

        _rtl_pci_deinit_trx_ring(hw);

        synchronize_irq(rtlpci->pdev->irq);
        tasklet_kill(&rtlpriv->works.irq_tasklet);

        flush_workqueue(rtlpriv->works.rtl_wq);
        destroy_workqueue(rtlpriv->works.rtl_wq);

}

int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        int err;

        _rtl_pci_init_struct(hw, pdev);

        err = _rtl_pci_init_trx_ring(hw);
        if (err) {
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("tx ring initialization failed"));
                return err;
        }

        return 1;
}

int rtl_pci_start(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));

        int err = 0;
        RT_TRACE(COMP_INIT, DBG_DMESG, (" rtl_pci_start \n"));
        rtl_pci_reset_trx_ring(hw);

        rtlpriv->rtlhal.driver_is_goingto_unload = false;
        err = rtlpriv->cfg->ops->hw_init(hw);
        if (err) {
                RT_TRACE(COMP_INIT, DBG_DMESG,
                         ("Failed to config hardware err %x!\n",err));
                return err;
        }

        rtlpriv->cfg->ops->enable_interrupt(hw);
        RT_TRACE(COMP_INIT, DBG_LOUD, ("enable_interrupt OK\n"));

        rtl_init_rx_config(hw);

        /*should after adapter start and interrupt enable. */
        set_hal_start(rtlhal);

        RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);

        rtlpriv->rtlhal.up_first_time = false;

        RT_TRACE(COMP_INIT, DBG_DMESG, ("rtl_pci_start OK\n"));
        return 0;
}

void rtl_pci_stop(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        u8 RFInProgressTimeOut = 0;

        /*
         *should before disable interrrupt&adapter
         *and will do it immediately.
         */
        set_hal_stop(rtlhal);

        rtlpriv->cfg->ops->disable_interrupt(hw);

        spin_lock(&rtlpriv->locks.rf_ps_lock);
        while (ppsc->rfchange_inprogress) {
                spin_unlock(&rtlpriv->locks.rf_ps_lock);
                if (RFInProgressTimeOut > 100) {
                        spin_lock(&rtlpriv->locks.rf_ps_lock);
                        break;
                }
                mdelay(1);
                RFInProgressTimeOut++;
                spin_lock(&rtlpriv->locks.rf_ps_lock);
        }
        ppsc->rfchange_inprogress = true;
        spin_unlock(&rtlpriv->locks.rf_ps_lock);

        rtlpriv->rtlhal.driver_is_goingto_unload = true;
        rtlpriv->cfg->ops->hw_disable(hw);
        rtlpriv->cfg->ops->led_control(hw, LED_CTL_POWER_OFF);

        spin_lock(&rtlpriv->locks.rf_ps_lock);
        ppsc->rfchange_inprogress = false;
        spin_unlock(&rtlpriv->locks.rf_ps_lock);

        rtl_pci_enable_aspm(hw);
}

static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
                                  struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        struct pci_dev *bridge_pdev = pdev->bus->self;
        u16 venderid;
        u16 deviceid;
        u8 revisionid;
        u16 irqline;
        u8 tmp;

        venderid = pdev->vendor;
        deviceid = pdev->device;
        pci_read_config_byte(pdev, 0x8, &revisionid);
        pci_read_config_word(pdev, 0x3C, &irqline);

        if (deviceid == RTL_PCI_8192_DID ||
            deviceid == RTL_PCI_0044_DID ||
            deviceid == RTL_PCI_0047_DID ||
            deviceid == RTL_PCI_8192SE_DID ||
            deviceid == RTL_PCI_8174_DID ||
            deviceid == RTL_PCI_8173_DID ||
            deviceid == RTL_PCI_8172_DID ||
            deviceid == RTL_PCI_8171_DID) {
                switch (revisionid) {
                case RTL_PCI_REVISION_ID_8192PCIE:
                        RT_TRACE(COMP_INIT, DBG_DMESG,
                                 ("8192E is found but not supported now-"

                                  "vid/did=%x/%x\n", venderid, deviceid));
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8192E;
                        return false;
                        break;
                case RTL_PCI_REVISION_ID_8192SE:
                        RT_TRACE(COMP_INIT, DBG_DMESG,
                                 ("8192SE is found - "
                                  "vid/did=%x/%x\n", venderid, deviceid));
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
                        break;
                default:
                        RT_TRACE(COMP_ERR, DBG_WARNING,
                                 ("Err: Unknown device - "
                                  "vid/did=%x/%x\n", venderid, deviceid));
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8192SE;
                        break;

                }
        }else if(deviceid == RTL_PCI_8723AE_DID) {
                rtlhal->hw_type = HARDWARE_TYPE_RTL8723AE;
                RT_TRACE(COMP_INIT, DBG_DMESG,
                         ("8723AE PCI-E is found - "
                          "vid/did=%x/%x\n", venderid, deviceid));
        } else if (deviceid == RTL_PCI_8192CET_DID ||
                   deviceid == RTL_PCI_8192CE_DID ||
                   deviceid == RTL_PCI_8191CE_DID ||
                   deviceid == RTL_PCI_8188CE_DID) {
                rtlhal->hw_type = HARDWARE_TYPE_RTL8192CE;
                RT_TRACE(COMP_INIT, DBG_DMESG,
                         ("8192C PCI-E is found - "
                          "vid/did=%x/%x\n", venderid, deviceid));
        } else if (deviceid == RTL_PCI_8192DE_DID ||
                   deviceid == RTL_PCI_8192DE_DID2) {
                rtlhal->hw_type = HARDWARE_TYPE_RTL8192DE;
                RT_TRACE(COMP_INIT, DBG_DMESG,
                         ("8192D PCI-E is found - "
                          "vid/did=%x/%x\n", venderid, deviceid));
        }else if(deviceid == RTL_PCI_8188EE_DID){
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8188EE;
                        RT_TRACE(COMP_INIT,DBG_LOUD,
                                 ("Find adapter, Hardware type is 8188EE\n"));
        }else if (deviceid == RTL_PCI_8723BE_DID){
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8723BE;
                        RT_TRACE(COMP_INIT,DBG_LOUD,
                                 ("Find adapter, Hardware type is 8723BE\n"));
        }else if (deviceid == RTL_PCI_8192EE_DID){
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8192EE;
                        RT_TRACE(COMP_INIT,DBG_LOUD,
                                 ("Find adapter, Hardware type is 8192EE\n"));
        }else if (deviceid == RTL_PCI_8821AE_DID) {
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8821AE;
                        RT_TRACE(COMP_INIT,DBG_LOUD,
                                ("Find adapter, Hardware type is 8821AE\n"));
        }else if (deviceid == RTL_PCI_8812AE_DID) {
                        rtlhal->hw_type = HARDWARE_TYPE_RTL8812AE;
                        RT_TRACE(COMP_INIT,DBG_LOUD,
                                ("Find adapter, Hardware type is 8812AE\n"));
        }else {
                RT_TRACE(COMP_ERR, DBG_WARNING,
                         ("Err: Unknown device -"
                          " vid/did=%x/%x\n", venderid, deviceid));

                rtlhal->hw_type = RTL_DEFAULT_HARDWARE_TYPE;
        }

        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192DE) {
                if (revisionid == 0 || revisionid == 1) {
                        if (revisionid == 0) {
                                RT_TRACE(COMP_INIT, DBG_LOUD,
                                         ("Find 92DE MAC0.\n"));
                                rtlhal->interfaceindex = 0;
                        } else if (revisionid == 1) {
                                RT_TRACE(COMP_INIT, DBG_LOUD,
                                         ("Find 92DE MAC1.\n"));
                                rtlhal->interfaceindex = 1;
                        }
                } else {
                        RT_TRACE(COMP_INIT, DBG_LOUD, ("Unknown device - "
                                 "VendorID/DeviceID=%x/%x, Revision=%x\n",
                                 venderid, deviceid, revisionid));
                        rtlhal->interfaceindex = 0;
                }
        }
        
        /* 92ee use new trx flow */
        if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192EE)
                rtlpriv->use_new_trx_flow = true;
        else
                rtlpriv->use_new_trx_flow = false;
        
        /*find bus info */
        pcipriv->ndis_adapter.busnumber = pdev->bus->number;
        pcipriv->ndis_adapter.devnumber = PCI_SLOT(pdev->devfn);
        pcipriv->ndis_adapter.funcnumber = PCI_FUNC(pdev->devfn);

        /*find bridge info */
        pcipriv->ndis_adapter.pcibridge_vendor = PCI_BRIDGE_VENDOR_UNKNOWN;
        /* some ARM have no bridge_pdev and will crash here 
         * so we should check if bridge_pdev is NULL */
        if (bridge_pdev) {
                pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor;
                for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) {
                        if (bridge_pdev->vendor == pcibridge_vendors[tmp]) {
                                pcipriv->ndis_adapter.pcibridge_vendor = tmp;
                                RT_TRACE(COMP_INIT, DBG_DMESG,
                                         ("Pci Bridge Vendor is found index: %d\n",
                                          tmp));
                                break;
                        }
                }
        }

        if (pcipriv->ndis_adapter.pcibridge_vendor !=
            PCI_BRIDGE_VENDOR_UNKNOWN) {
                pcipriv->ndis_adapter.pcibridge_busnum =
                    bridge_pdev->bus->number;
                pcipriv->ndis_adapter.pcibridge_devnum =
                    PCI_SLOT(bridge_pdev->devfn);
                pcipriv->ndis_adapter.pcibridge_funcnum =
                    PCI_FUNC(bridge_pdev->devfn);
                pcipriv->ndis_adapter.pcicfg_addrport =
                    (pcipriv->ndis_adapter.pcibridge_busnum << 16) |
                    (pcipriv->ndis_adapter.pcibridge_devnum << 11) |
                    (pcipriv->ndis_adapter.pcibridge_funcnum << 8) | (1 << 31);
/*<delete in kernel start>*/
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
/*<delete in kernel end>*/
                pcipriv->ndis_adapter.pcibridge_pciehdr_offset =
                    pci_pcie_cap(bridge_pdev);
/*<delete in kernel start>*/
#else
                pcipriv->ndis_adapter.pcibridge_pciehdr_offset =
                        _rtl_pci_get_pciehdr_offset(hw);
#endif
/*<delete in kernel end>*/
                pcipriv->ndis_adapter.num4bytes =
                    (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10) / 4;

                rtl_pci_get_linkcontrol_field(hw);

                if (pcipriv->ndis_adapter.pcibridge_vendor ==
                    PCI_BRIDGE_VENDOR_AMD) {
                        pcipriv->ndis_adapter.amd_l1_patch =
                            rtl_pci_get_amd_l1_patch(hw);
                }
        }

        RT_TRACE(COMP_INIT, DBG_DMESG,
                 ("pcidev busnumber:devnumber:funcnumber:"
                  "vendor:link_ctl %d:%d:%d:%x:%x\n",
                  pcipriv->ndis_adapter.busnumber,
                  pcipriv->ndis_adapter.devnumber,
                  pcipriv->ndis_adapter.funcnumber,
                  pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg));

        RT_TRACE(COMP_INIT, DBG_DMESG,
                 ("pci_bridge busnumber:devnumber:funcnumber:vendor:"
                  "pcie_cap:link_ctl_reg:amd %d:%d:%d:%x:%x:%x:%x\n",
                  pcipriv->ndis_adapter.pcibridge_busnum,
                  pcipriv->ndis_adapter.pcibridge_devnum,
                  pcipriv->ndis_adapter.pcibridge_funcnum,
                  pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor],
                  pcipriv->ndis_adapter.pcibridge_pciehdr_offset,
                  pcipriv->ndis_adapter.pcibridge_linkctrlreg,
                  pcipriv->ndis_adapter.amd_l1_patch));

        rtl_pci_parse_configuration(pdev, hw);
        list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list);
        return true;
}

static int rtl_pci_intr_mode_msi(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
        int ret;
        ret = pci_enable_msi(rtlpci->pdev);
        if (ret < 0)
                return ret;

        ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
                          IRQF_SHARED, KBUILD_MODNAME, hw);
        if (ret < 0) {
                pci_disable_msi(rtlpci->pdev);
                return ret;
        }

        rtlpci->using_msi = true;
        
        RT_TRACE(COMP_INIT|COMP_INTR, DBG_DMESG, ("MSI Interrupt Mode!\n"));
        return 0;
}

static int rtl_pci_intr_mode_legacy(struct ieee80211_hw *hw)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
        int ret;
        
        ret = request_irq(rtlpci->pdev->irq, &_rtl_pci_interrupt,
                          IRQF_SHARED, KBUILD_MODNAME, hw);
        if (ret < 0) {
                return ret;
        }

        rtlpci->using_msi = false;
        RT_TRACE(COMP_INIT|COMP_INTR, DBG_DMESG, 
                 ("Pin-based Interrupt Mode!\n"));
        return 0;
}

static int rtl_pci_intr_mode_decide(struct ieee80211_hw *hw)
{
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
        int ret;
        if (rtlpci->msi_support == true) {
                ret = rtl_pci_intr_mode_msi(hw);
                if (ret < 0)
                        ret = rtl_pci_intr_mode_legacy(hw);
        } else {
                ret = rtl_pci_intr_mode_legacy(hw);
        }
        return ret;
}

/* this is used for other modules get
 * hw pointer in rtl_pci_get_hw_pointer */
struct ieee80211_hw *hw_export = NULL;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
int rtl_pci_probe(struct pci_dev *pdev,
                  const struct pci_device_id *id)

#else
int __devinit rtl_pci_probe(struct pci_dev *pdev,
                            const struct pci_device_id *id)
#endif
{
        struct ieee80211_hw *hw = NULL;

        struct rtl_priv *rtlpriv = NULL;
        struct rtl_pci_priv *pcipriv = NULL;
        struct rtl_pci *rtlpci;
        unsigned long pmem_start, pmem_len, pmem_flags;
        int err;


        err = pci_enable_device(pdev);
        if (err) {
                RT_ASSERT(false,
                          ("%s : Cannot enable new PCI device\n",
                           pci_name(pdev)));
                return err;
        }

        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
                if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
                        RT_ASSERT(false, ("Unable to obtain 32bit DMA "
                                          "for consistent allocations\n"));
                        pci_disable_device(pdev);
                        return -ENOMEM;
                }
        }

        pci_set_master(pdev);

        hw = ieee80211_alloc_hw(sizeof(struct rtl_pci_priv) +
                                sizeof(struct rtl_priv), &rtl_ops);
        if (!hw) {
                RT_ASSERT(false,
                          ("%s : ieee80211 alloc failed\n", pci_name(pdev)));
                err = -ENOMEM;
                goto fail1;
        }
        hw_export = hw;

        SET_IEEE80211_DEV(hw, &pdev->dev);
        pci_set_drvdata(pdev, hw);

        rtlpriv = hw->priv;
        pcipriv = (void *)rtlpriv->priv;
        pcipriv->dev.pdev = pdev;

        /* init cfg & intf_ops */
        rtlpriv->rtlhal.interface = INTF_PCI;
        rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data);
        rtlpriv->intf_ops = &rtl_pci_ops;
        rtlpriv->glb_var = &global_var;

        /*
         *init dbgp flags before all
         *other functions, because we will
         *use it in other funtions like
         *RT_TRACE/RT_PRINT/RTL_PRINT_DATA
         *you can not use these macro
         *before this
         */
        rtl_dbgp_flag_init(hw);

        /* MEM map */
        err = pci_request_regions(pdev, KBUILD_MODNAME);
        if (err) {
                RT_ASSERT(false, ("Can't obtain PCI resources\n"));
                return err;
        }

        pmem_start = pci_resource_start(pdev, rtlpriv->cfg->bar_id);
        pmem_len = pci_resource_len(pdev, rtlpriv->cfg->bar_id);
        pmem_flags = pci_resource_flags(pdev, rtlpriv->cfg->bar_id);

        /*shared mem start */
        rtlpriv->io.pci_mem_start =
                        (unsigned long)pci_iomap(pdev,
                        rtlpriv->cfg->bar_id, pmem_len);
        if (rtlpriv->io.pci_mem_start == 0) {
                RT_ASSERT(false, ("Can't map PCI mem\n"));
                goto fail2;
        }

        RT_TRACE(COMP_INIT, DBG_DMESG,
                 ("mem mapped space: start: 0x%08lx len:%08lx "
                  "flags:%08lx, after map:0x%08lx\n",
                  pmem_start, pmem_len, pmem_flags,
                  rtlpriv->io.pci_mem_start));

        /* Disable Clk Request */
        pci_write_config_byte(pdev, 0x81, 0);
        /* leave D3 mode */
        pci_write_config_byte(pdev, 0x44, 0);
        pci_write_config_byte(pdev, 0x04, 0x06);
        pci_write_config_byte(pdev, 0x04, 0x07);

        /* find adapter */
        /* if chip not support, will return false */
        if(!_rtl_pci_find_adapter(pdev, hw))
                goto fail3;

        /* Init IO handler */
        _rtl_pci_io_handler_init(&pdev->dev, hw);

        /*like read eeprom and so on */
        rtlpriv->cfg->ops->read_eeprom_info(hw);

        if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
                RT_TRACE(COMP_ERR, DBG_EMERG, ("Can't init_sw_vars.\n"));
                goto fail3;
        }

        rtlpriv->cfg->ops->init_sw_leds(hw);

        /*aspm */
        rtl_pci_init_aspm(hw);

        /* Init mac80211 sw */
        err = rtl_init_core(hw);
        if (err) {
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("Can't allocate sw for mac80211.\n"));
                goto fail3;
        }

        /* Init PCI sw */
        err = !rtl_pci_init(hw, pdev);
        if (err) {
                RT_TRACE(COMP_ERR, DBG_EMERG, ("Failed to init PCI.\n"));
                goto fail3;
        }

        err = ieee80211_register_hw(hw);
        if (err) {
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("Can't register mac80211 hw.\n"));
                goto fail3;
        } else {
                rtlpriv->mac80211.mac80211_registered = 1;
        }
        /* the wiphy must have been registed to 
         * cfg80211 prior to regulatory_hint */
        if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
                RT_TRACE(COMP_ERR, DBG_WARNING, ("regulatory_hint fail\n"));
        }

        err = sysfs_create_group(&pdev->dev.kobj, &rtl_attribute_group);
        if (err) {
                RT_TRACE(COMP_ERR, DBG_EMERG,
                         ("failed to create sysfs device attributes\n"));
                goto fail3;
        }
        /* add for prov */
        rtl_proc_add_one(hw);

        /*init rfkill */
        rtl_init_rfkill(hw);

        rtlpci = rtl_pcidev(pcipriv);

        err = rtl_pci_intr_mode_decide(hw);
        if (err) {
                RT_TRACE(COMP_INIT, DBG_DMESG,
                         ("%s: failed to register IRQ handler\n",
                          wiphy_name(hw->wiphy)));
                goto fail3;
        } else {
                rtlpci->irq_alloc = 1;
        }

        set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
        return 0;

fail3:
        pci_set_drvdata(pdev, NULL);
        rtl_deinit_core(hw);
        ieee80211_free_hw(hw);

        if (rtlpriv->io.pci_mem_start != 0)
                pci_iounmap(pdev, (void *)rtlpriv->io.pci_mem_start);

fail2:
        pci_release_regions(pdev);

fail1:

        pci_disable_device(pdev);

        return -ENODEV;

}
//EXPORT_SYMBOL(rtl_pci_probe);

struct ieee80211_hw *rtl_pci_get_hw_pointer(void)
{
        return hw_export;
}
//EXPORT_SYMBOL(rtl_pci_get_hw_pointer);

void rtl_pci_disconnect(struct pci_dev *pdev)
{
        struct ieee80211_hw *hw = pci_get_drvdata(pdev);
        struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
        struct rtl_mac *rtlmac = rtl_mac(rtlpriv);

        clear_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);

        sysfs_remove_group(&pdev->dev.kobj, &rtl_attribute_group);

        /* add for prov */
        rtl_proc_remove_one(hw);
        

        /*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_pci_deinit(hw);
        rtl_deinit_core(hw);
        rtlpriv->cfg->ops->deinit_sw_vars(hw);

        if (rtlpci->irq_alloc) {
                synchronize_irq(rtlpci->pdev->irq);
                free_irq(rtlpci->pdev->irq, hw);
                rtlpci->irq_alloc = 0;
        }

        if (rtlpci->using_msi == true)
                pci_disable_msi(rtlpci->pdev);

        list_del(&rtlpriv->list);
        if (rtlpriv->io.pci_mem_start != 0) {
                pci_iounmap(pdev, (void *)rtlpriv->io.pci_mem_start);
                pci_release_regions(pdev);
        }

        pci_disable_device(pdev);

        rtl_pci_disable_aspm(hw);

        pci_set_drvdata(pdev, NULL);

        ieee80211_free_hw(hw);
}
//EXPORT_SYMBOL(rtl_pci_disconnect);

/***************************************
kernel pci power state define:
PCI_D0         ((pci_power_t __force) 0)
PCI_D1         ((pci_power_t __force) 1)
PCI_D2         ((pci_power_t __force) 2)
PCI_D3hot      ((pci_power_t __force) 3)
PCI_D3cold     ((pci_power_t __force) 4)
PCI_UNKNOWN    ((pci_power_t __force) 5)

This function is called when system
goes into suspend state mac80211 will
call rtl_mac_stop() from the mac80211
suspend function first, So there is
no need to call hw_disable here.
****************************************/
int rtl_pci_suspend(struct device *dev)
{
        struct pci_dev *pdev = to_pci_dev(dev);
        struct ieee80211_hw *hw = pci_get_drvdata(pdev);
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        rtlpriv->cfg->ops->hw_suspend(hw);
        rtl_deinit_rfkill(hw);

        return 0;
}
//EXPORT_SYMBOL(rtl_pci_suspend);

int rtl_pci_resume(struct device *dev)
{
        struct pci_dev *pdev = to_pci_dev(dev);
        struct ieee80211_hw *hw = pci_get_drvdata(pdev);
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        rtlpriv->cfg->ops->hw_resume(hw);
        rtl_init_rfkill(hw);
        
        return 0;
}
//EXPORT_SYMBOL(rtl_pci_resume);

struct rtl_intf_ops rtl_pci_ops = {
        .read_efuse_byte = read_efuse_byte,
        .adapter_start = rtl_pci_start,
        .adapter_stop = rtl_pci_stop,
        .check_buddy_priv = rtl_pci_check_buddy_priv,
        .adapter_tx = rtl_pci_tx,
        .flush = rtl_pci_flush,
        .reset_trx_ring = rtl_pci_reset_trx_ring,
        .waitq_insert = rtl_pci_tx_chk_waitq_insert,

        .disable_aspm = rtl_pci_disable_aspm,
        .enable_aspm = rtl_pci_enable_aspm,
};