rtlwifi: rtl_pci: Start modification for new drivers

Future patches will move the drivers for RTL8192EE and RTL8821AE
from staging to the regular wireless tree. Here, the necessary features
are added to the PCI driver. Other files are touched due to changes
in the various data structs.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 605 insertions, 334 deletions

diff --git a/drivers/net/wireless/rtlwifi/core.c b/drivers/net/wireless/rtlwifi/core.c
index 56e218e0469c..98e564d61a0e 100644
--- a/drivers/net/wireless/rtlwifi/core.c
+++ b/drivers/net/wireless/rtlwifi/core.c
@@ -129,19 +129,6 @@ found_alt:
 	memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
 	rtlpriv->rtlhal.fwsize = firmware->size;
 	release_firmware(firmware);
-
-	err = ieee80211_register_hw(hw);
-	if (err) {
-		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
-			 "Can't register mac80211 hw\n");
-		return;
-	} else {
-		rtlpriv->mac80211.mac80211_registered = 1;
-	}
-	set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
-
-	/*init rfkill */
-	rtl_init_rfkill(hw);
 }
 EXPORT_SYMBOL(rtl_fw_cb);
 
@@ -1392,7 +1379,7 @@ static void rtl_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 
 	if (rtlpriv->intf_ops->flush)
-		rtlpriv->intf_ops->flush(hw, drop);
+		rtlpriv->intf_ops->flush(hw, queues, drop);
 }
 
 const struct ieee80211_ops rtl_ops = {
diff --git a/drivers/net/wireless/rtlwifi/core.h b/drivers/net/wireless/rtlwifi/core.h
index 027e75374dcc..cdd47276f694 100644
--- a/drivers/net/wireless/rtlwifi/core.h
+++ b/drivers/net/wireless/rtlwifi/core.h
@@ -2,20 +2,16 @@
  *
  * Copyright(c) 2009-2012  Realtek Corporation.
  *
- * Tmis program is free software; you can redistribute it and/or modify it
+ * 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.
  *
- * Tmis program is distributed in the hope that it will be useful, but WITHOUT
+ * 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
- * tmis program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
- * Tme full GNU General Public License is included in this distribution in the
+ * The full GNU General Public License is included in this distribution in the
  * file called LICENSE.
  *
  * Contact Information:
diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 74a8ba4b8844..37a78bf01f94 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -33,6 +33,7 @@
 #include "base.h"
 #include "ps.h"
 #include "efuse.h"
+#include <linux/interrupt.h>
 #include <linux/export.h>
 #include <linux/kmemleak.h>
 #include <linux/module.h>
@@ -44,10 +45,10 @@ MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("PCI basic driver for rtlwifi");
 
 static const u16 pcibridge_vendors[PCI_BRIDGE_VENDOR_MAX] = {
-	PCI_VENDOR_ID_INTEL,
-	PCI_VENDOR_ID_ATI,
-	PCI_VENDOR_ID_AMD,
-	PCI_VENDOR_ID_SI
+	INTEL_VENDOR_ID,
+	ATI_VENDOR_ID,
+	AMD_VENDOR_ID,
+	SIS_VENDOR_ID
 };
 
 static const u8 ac_to_hwq[] = {
@@ -566,27 +567,25 @@ static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
 	struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[prio];
 
 	while (skb_queue_len(&ring->queue)) {
-		struct rtl_tx_desc *entry = &ring->desc[ring->idx];
 		struct sk_buff *skb;
 		struct ieee80211_tx_info *info;
 		__le16 fc;
 		u8 tid;
+		u8 *entry;
 
-		u8 own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) entry, true,
-							  HW_DESC_OWN);
+		if (rtlpriv->use_new_trx_flow)
+			entry = (u8 *)(&ring->buffer_desc[ring->idx]);
+		else
+			entry = (u8 *)(&ring->desc[ring->idx]);
 
-		/*beacon packet will only use the first
-		 *descriptor by defaut, and the own may not
-		 *be cleared by the hardware
-		 */
-		if (own)
+		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,
 				 rtlpriv->cfg->ops->
-					     get_desc((u8 *) entry, true,
+					     get_desc((u8 *)entry, true,
 						      HW_DESC_TXBUFF_ADDR),
 				 skb->len, PCI_DMA_TODEVICE);
 
@@ -598,7 +597,7 @@ static void _rtl_pci_tx_isr(struct ieee80211_hw *hw, int prio)
 			 "new ring->idx:%d, free: skb_queue_len:%d, free: seq:%x\n",
 			 ring->idx,
 			 skb_queue_len(&ring->queue),
-			 *(u16 *) (skb->data + 22));
+			 *(u16 *)(skb->data + 22));
 
 		if (prio == TXCMD_QUEUE) {
 			dev_kfree_skb(skb);
@@ -666,175 +665,276 @@ tx_status_ok:
 	}
 }
 
-static void _rtl_receive_one(struct ieee80211_hw *hw, struct sk_buff *skb,
-			     struct ieee80211_rx_status rx_status)
+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 ieee80211_hdr *hdr = rtl_get_hdr(skb);
-	__le16 fc = rtl_get_fc(skb);
-	bool unicast = false;
-	struct sk_buff *uskb = NULL;
-	u8 *pdata;
-
-
-	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*/
+	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 = *((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 {
-		unicast = true;
-		rtlpriv->stats.rxbytesunicast += skb->len;
+		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;
+}
 
-	if (ieee80211_is_data(fc)) {
-		rtlpriv->cfg->ops->led_control(hw, LED_CTL_RX);
-
-		if (unicast)
-			rtlpriv->link_info.num_rx_inperiod++;
+/* inorder to receive 8K AMSDU we have set skb to
+ * 9100bytes in init rx ring, but if this packet is
+ * not a AMSDU, this large 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, Mac80211
+ * Probably will do it better, but does not yet.
+ *
+ * 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 this packet will be lost 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);
+		}
 	}
+}
 
-	/* 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)))
-		return;
-
-	if (unlikely(!rtl_action_proc(hw, skb, false)))
-		return;
-
-	uskb = dev_alloc_skb(skb->len + 128);
-	if (!uskb)
-		return;		/* exit if allocation failed */
-	memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status, sizeof(rx_status));
-	pdata = (u8 *)skb_put(uskb, skb->len);
-	memcpy(pdata, skb->data, skb->len);
+/*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));
 
-	ieee80211_rx_irqsafe(hw, uskb);
+	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 rx_queue_idx = RTL_PCI_RX_MPDU_QUEUE;
-
+	int rxring_idx = RTL_PCI_RX_MPDU_QUEUE;
 	struct ieee80211_rx_status rx_status = { 0 };
 	unsigned int count = rtlpci->rxringcount;
 	u8 own;
 	u8 tmp_one;
-	u32 bufferaddress;
-
+	bool unicast = false;
+	u8 hw_queue = 0;
+	unsigned int rx_remained_cnt;
 	struct rtl_stats stats = {
 		.signal = 0,
 		.rate = 0,
 	};
-	int index = rtlpci->rx_ring[rx_queue_idx].idx;
 
-	if (rtlpci->driver_is_goingto_unload)
-		return;
 	/*RX NORMAL PKT */
 	while (count--) {
-		/*rx descriptor */
-		struct rtl_rx_desc *pdesc = &rtlpci->rx_ring[rx_queue_idx].desc[
-				index];
+		struct ieee80211_hdr *hdr;
+		__le16 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[rx_queue_idx].rx_buf[
-				index];
-		struct sk_buff *new_skb = NULL;
-
-		own = (u8) rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
-						       false, HW_DESC_OWN);
-
-		/*wait data to be filled by hardware */
-		if (own)
-			break;
+		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;
+		}
 
+		/* Reaching this point 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;
+		}
+		memset(&rx_status , 0 , sizeof(rx_status));
 		rtlpriv->cfg->ops->query_rx_desc(hw, &stats,
-						 &rx_status,
-						 (u8 *) pdesc, skb);
+						 &rx_status, (u8 *)pdesc, skb);
 
-		if (stats.crc || stats.hwerror)
-			goto done;
+		if (rtlpriv->use_new_trx_flow)
+			rtlpriv->cfg->ops->rx_check_dma_ok(hw,
+							   (u8 *)buffer_desc,
+							   hw_queue);
 
-		new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
-		if (unlikely(!new_skb)) {
-			RT_TRACE(rtlpriv, (COMP_INTR | COMP_RECV), DBG_DMESG,
-				 "can't alloc skb for rx\n");
-			goto done;
-		}
-		kmemleak_not_leak(new_skb);
+		len = rtlpriv->cfg->ops->get_desc((u8 *)pdesc, false,
+						  HW_DESC_RXPKT_LEN);
 
-		pci_unmap_single(rtlpci->pdev,
-				 *((dma_addr_t *) skb->cb),
-				 rtlpci->rxbuffersize,
-				 PCI_DMA_FROMDEVICE);
+		if (skb->end - skb->tail > len) {
+			skb_put(skb, len);
+			if (rtlpriv->use_new_trx_flow)
+				skb_reserve(skb, stats.rx_drvinfo_size +
+					    stats.rx_bufshift + 24);
+			else
+				skb_reserve(skb, stats.rx_drvinfo_size +
+					    stats.rx_bufshift);
 
-		skb_put(skb, rtlpriv->cfg->ops->get_desc((u8 *) pdesc, false,
-			HW_DESC_RXPKT_LEN));
-		skb_reserve(skb, stats.rx_drvinfo_size + stats.rx_bufshift);
+		} else {
+			RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+				 "skb->end - skb->tail = %d, len is %d\n",
+				 skb->end - skb->tail, len);
+			break;
+		}
+		/* handle command packet here */
+		if (rtlpriv->cfg->ops->rx_command_packet(hw, stats, skb)) {
+				dev_kfree_skb_any(skb);
+				goto end;
+		}
 
 		/*
 		 * NOTICE This can not be use for mac80211,
 		 * this is done in mac80211 code,
-		 * if you done here sec DHCP will fail
+		 * if done here sec DHCP will fail
 		 * skb_trim(skb, skb->len - 4);
 		 */
 
-		_rtl_receive_one(hw, skb, rx_status);
+		hdr = rtl_get_hdr(skb);
+		fc = rtl_get_fc(skb);
+
+		if (!stats.crc && !stats.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--;
+			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)) {
 			rtlpriv->enter_ps = false;
 			schedule_work(&rtlpriv->works.lps_change_work);
 		}
+end:
+		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);
 
-		dev_kfree_skb_any(skb);
-		skb = new_skb;
-
-		rtlpci->rx_ring[rx_queue_idx].rx_buf[index] = skb;
-		*((dma_addr_t *) skb->cb) =
-			    pci_map_single(rtlpci->pdev, skb_tail_pointer(skb),
-					   rtlpci->rxbuffersize,
-					   PCI_DMA_FROMDEVICE);
-
-done:
-		bufferaddress = (*((dma_addr_t *)skb->cb));
-		if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress))
-			return;
-		tmp_one = 1;
-		rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, false,
-					    HW_DESC_RXBUFF_ADDR,
-					    (u8 *)&bufferaddress);
-		rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, false,
-					    HW_DESC_RXPKT_LEN,
-					    (u8 *)&rtlpci->rxbuffersize);
-
-		if (index == rtlpci->rxringcount - 1)
-			rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, false,
-						    HW_DESC_RXERO,
-						    &tmp_one);
-
-		rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc, false, HW_DESC_RXOWN,
-					    &tmp_one);
-
-		index = (index + 1) % rtlpci->rxringcount;
+			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;
 	}
-
-	rtlpci->rx_ring[rx_queue_idx].idx = index;
 }
 
 static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 {
 	struct ieee80211_hw *hw = dev_id;
+	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 	unsigned long flags;
@@ -842,7 +942,11 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 	u32 intb = 0;
 	irqreturn_t ret = IRQ_HANDLED;
 
-	spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
+	if (rtlpci->irq_enabled == 0)
+		return ret;
+
+	spin_lock_irqsave(&rtlpriv->locks.irq_th_lock , flags);
+	rtlpriv->cfg->ops->disable_interrupt(hw);
 
 	/*read ISR: 4/8bytes */
 	rtlpriv->cfg->ops->interrupt_recognized(hw, &inta, &intb);
@@ -874,8 +978,8 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 		tasklet_schedule(&rtlpriv->works.irq_prepare_bcn_tasklet);
 	}
 
-	/*<3> Tx related */
-	if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
+	/*<2> Tx related */
+	if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_TXFOVW]))
 		RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "IMR_TXFOVW!\n");
 
 	if (inta & rtlpriv->cfg->maps[RTL_IMR_MGNTDOK]) {
@@ -932,7 +1036,7 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 		}
 	}
 
-	/*<2> Rx related */
+	/*<3> Rx related */
 	if (inta & rtlpriv->cfg->maps[RTL_IMR_ROK]) {
 		RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE, "Rx ok interrupt!\n");
 		_rtl_pci_rx_interrupt(hw);
@@ -944,12 +1048,12 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 		_rtl_pci_rx_interrupt(hw);
 	}
 
-	if (unlikely(inta & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
+	if (unlikely(intb & rtlpriv->cfg->maps[RTL_IMR_RXFOVW])) {
 		RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING, "rx overflow !\n");
 		_rtl_pci_rx_interrupt(hw);
 	}
 
-	/*fw related*/
+	/*<4> fw related*/
 	if (rtlhal->hw_type == HARDWARE_TYPE_RTL8723AE) {
 		if (inta & rtlpriv->cfg->maps[RTL_IMR_C2HCMD]) {
 			RT_TRACE(rtlpriv, COMP_INTR, DBG_TRACE,
@@ -959,10 +1063,26 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
 		}
 	}
 
+	/*<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(rtlpriv, COMP_INTR, DBG_TRACE,
+				 "hsisr interrupt!\n");
+			_rtl_pci_hs_interrupt(hw);
+		}
+	}
+
 	if (rtlpriv->rtlhal.earlymode_enable)
 		tasklet_schedule(&rtlpriv->works.irq_tasklet);
 
 done:
+	rtlpriv->cfg->ops->enable_interrupt(hw);
 	spin_unlock_irqrestore(&rtlpriv->locks.irq_th_lock, flags);
 	return ret;
 }
@@ -990,13 +1110,8 @@ static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 	memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
 	ring = &rtlpci->tx_ring[BEACON_QUEUE];
 	pskb = __skb_dequeue(&ring->queue);
-	if (pskb) {
-		struct rtl_tx_desc *entry = &ring->desc[ring->idx];
-		pci_unmap_single(rtlpci->pdev, rtlpriv->cfg->ops->get_desc(
-				 (u8 *) entry, true, HW_DESC_TXBUFF_ADDR),
-				 pskb->len, PCI_DMA_TODEVICE);
+	if (pskb)
 		kfree_skb(pskb);
-	}
 
 	/*NB: the beacon data buffer must be 32-bit aligned. */
 	pskb = ieee80211_beacon_get(hw, mac->vif);
@@ -1005,7 +1120,10 @@ static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 	hdr = rtl_get_hdr(pskb);
 	info = IEEE80211_SKB_CB(pskb);
 	pdesc = &ring->desc[0];
-	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *) pdesc,
+	if (rtlpriv->use_new_trx_flow)
+		pbuffer_desc = &ring->buffer_desc[0];
+
+	rtlpriv->cfg->ops->fill_tx_desc(hw, hdr, (u8 *)pdesc,
 					(u8 *)pbuffer_desc, info, NULL, pskb,
 					BEACON_QUEUE, &tcb_desc);
 
@@ -1020,10 +1138,18 @@ static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
 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] = RT_TXDESC_NUM;
+		rtlpci->txringcount[i] = desc_num;
 
 	/*
 	 *we just alloc 2 desc for beacon queue,
@@ -1031,12 +1157,12 @@ static void _rtl_pci_init_trx_var(struct ieee80211_hw *hw)
 	 */
 	rtlpci->txringcount[BEACON_QUEUE] = 2;
 
-	/*
-	 *BE queue need more descriptor for performance
+	/*BE queue need more descriptor for performance
 	 *consideration or, No more tx desc will happen,
 	 *and may cause mac80211 mem leakage.
 	 */
-	rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;
+	if (!rtl_priv(hw)->use_new_trx_flow)
+		rtlpci->txringcount[BE_QUEUE] = RT_TXDESC_NUM_BE_QUEUE;
 
 	rtlpci->rxbuffersize = 9100;	/*2048/1024; */
 	rtlpci->rxringcount = RTL_PCI_MAX_RX_COUNT;	/*64; */
@@ -1087,113 +1213,124 @@ static int _rtl_pci_init_tx_ring(struct ieee80211_hw *hw,
 {
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	struct rtl_tx_desc *ring;
-	dma_addr_t dma;
+	struct rtl_tx_buffer_desc *buffer_desc;
+	struct rtl_tx_desc *desc;
+	dma_addr_t buffer_desc_dma, desc_dma;
 	u32 nextdescaddress;
 	int i;
 
-	ring = pci_zalloc_consistent(rtlpci->pdev, sizeof(*ring) * entries,
-				     &dma);
-	if (!ring || (unsigned long)ring & 0xFF) {
+	/* alloc tx buffer desc for new trx flow*/
+	if (rtlpriv->use_new_trx_flow) {
+		buffer_desc =
+		   pci_zalloc_consistent(rtlpci->pdev,
+					 sizeof(*buffer_desc) * entries,
+					 &buffer_desc_dma);
+
+		if (!buffer_desc || (unsigned long)buffer_desc & 0xFF) {
+			RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+				 "Cannot allocate TX ring (prio = %d)\n",
+				 prio);
+			return -ENOMEM;
+		}
+
+		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_zalloc_consistent(rtlpci->pdev,
+				     sizeof(*desc) * entries, &desc_dma);
+
+	if (!desc || (unsigned long)desc & 0xFF) {
 		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 			 "Cannot allocate TX ring (prio = %d)\n", prio);
 		return -ENOMEM;
 	}
 
-	rtlpci->tx_ring[prio].desc = ring;
-	rtlpci->tx_ring[prio].dma = dma;
+	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(rtlpriv, COMP_INIT, DBG_LOUD, "queue:%d, ring_addr:%p\n",
-		 prio, ring);
-
-	for (i = 0; i < entries; i++) {
-		nextdescaddress = (u32) dma +
-					      ((i + 1) % entries) *
-					      sizeof(*ring);
-
-		rtlpriv->cfg->ops->set_desc(hw, (u8 *)&(ring[i]),
-					    true, HW_DESC_TX_NEXTDESC_ADDR,
-					    (u8 *)&nextdescaddress);
+		 prio, desc);
+
+	/* init every desc in this ring */
+	if (!rtlpriv->use_new_trx_flow) {
+		for (i = 0; i < entries; i++) {
+			nextdescaddress = (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)
+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);
-	struct rtl_rx_desc *entry = NULL;
-	int i, rx_queue_idx;
-	u8 tmp_one = 1;
+	int i;
 
-	/*
-	 *rx_queue_idx 0:RX_MPDU_QUEUE
-	 *rx_queue_idx 1:RX_CMD_QUEUE
-	 */
-	for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
-	     rx_queue_idx++) {
-		rtlpci->rx_ring[rx_queue_idx].desc =
-			pci_zalloc_consistent(rtlpci->pdev,
-					      sizeof(*rtlpci->rx_ring[rx_queue_idx].desc) * rtlpci->rxringcount,
-					      &rtlpci->rx_ring[rx_queue_idx].dma);
-
-		if (!rtlpci->rx_ring[rx_queue_idx].desc ||
-		    (unsigned long)rtlpci->rx_ring[rx_queue_idx].desc & 0xFF) {
+	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_zalloc_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 ||
+		    (ulong)rtlpci->rx_ring[rxring_idx].buffer_desc & 0xFF) {
 			RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
 				 "Cannot allocate RX ring\n");
 			return -ENOMEM;
 		}
 
-		rtlpci->rx_ring[rx_queue_idx].idx = 0;
+		/* 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_zalloc_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(rtlpriv, COMP_ERR, DBG_EMERG,
+				 "Cannot allocate RX ring\n");
+			return -ENOMEM;
+		}
 
-		/* If amsdu_8k is disabled, set buffersize to 4096. This
-		 * change will reduce memory fragmentation.
-		 */
-		if (rtlpci->rxbuffersize > 4096 &&
-		    rtlpriv->rtlhal.disable_amsdu_8k)
-			rtlpci->rxbuffersize = 4096;
+		/* init every desc in this ring */
+		rtlpci->rx_ring[rxring_idx].idx = 0;
 
 		for (i = 0; i < rtlpci->rxringcount; i++) {
-			struct sk_buff *skb =
-			    dev_alloc_skb(rtlpci->rxbuffersize);
-			u32 bufferaddress;
-			if (!skb)
-				return 0;
-			kmemleak_not_leak(skb);
-			entry = &rtlpci->rx_ring[rx_queue_idx].desc[i];
-
-			/*skb->dev = dev; */
-
-			rtlpci->rx_ring[rx_queue_idx].rx_buf[i] = 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 = (*((dma_addr_t *)skb->cb));
-			if (pci_dma_mapping_error(rtlpci->pdev, bufferaddress)) {
-				dev_kfree_skb_any(skb);
-				return 1;
-			}
-			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,
-						    &tmp_one);
+			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,
@@ -1209,56 +1346,70 @@ static void _rtl_pci_free_tx_ring(struct ieee80211_hw *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)) {
-		struct rtl_tx_desc *entry = &ring->desc[ring->idx];
+		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,
 				 rtlpriv->cfg->
-					     ops->get_desc((u8 *) entry, true,
+					     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;
 	}
 
-	if (ring->desc) {
+	/* 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->desc) * ring->entries,
-				    ring->desc, ring->dma);
+				    ring->buffer_desc, ring->buffer_desc_dma);
 		ring->desc = NULL;
 	}
 }
 
-static void _rtl_pci_free_rx_ring(struct rtl_pci *rtlpci)
+static void _rtl_pci_free_rx_ring(struct ieee80211_hw *hw, int rxring_idx)
 {
-	int i, rx_queue_idx;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
+	int i;
 
-	/*rx_queue_idx 0:RX_MPDU_QUEUE */
-	/*rx_queue_idx 1:RX_CMD_QUEUE */
-	for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
-	     rx_queue_idx++) {
-		for (i = 0; i < rtlpci->rxringcount; i++) {
-			struct sk_buff *skb =
-			    rtlpci->rx_ring[rx_queue_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 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 (rtlpci->rx_ring[rx_queue_idx].desc) {
-			pci_free_consistent(rtlpci->pdev,
-				    sizeof(*rtlpci->rx_ring[rx_queue_idx].
-					   desc) * rtlpci->rxringcount,
-				    rtlpci->rx_ring[rx_queue_idx].desc,
-				    rtlpci->rx_ring[rx_queue_idx].dma);
-			rtlpci->rx_ring[rx_queue_idx].desc = NULL;
-		}
+		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;
 	}
 }
 
@@ -1266,11 +1417,16 @@ static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
 {
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	int ret;
-	int i;
+	int i, rxring_idx;
 
-	ret = _rtl_pci_init_rx_ring(hw);
-	if (ret)
-		return ret;
+	/* 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,
@@ -1282,10 +1438,12 @@ static int _rtl_pci_init_trx_ring(struct ieee80211_hw *hw)
 	return 0;
 
 err_free_rings:
-	_rtl_pci_free_rx_ring(rtlpci);
+	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)
+		if (rtlpci->tx_ring[i].desc ||
+		    rtlpci->tx_ring[i].buffer_desc)
 			_rtl_pci_free_tx_ring(hw, i);
 
 	return 1;
@@ -1293,11 +1451,11 @@ err_free_rings:
 
 static int _rtl_pci_deinit_trx_ring(struct ieee80211_hw *hw)
 {
-	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
-	u32 i;
+	u32 i, rxring_idx;
 
 	/*free rx rings */
-	_rtl_pci_free_rx_ring(rtlpci);
+	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++)
@@ -1310,48 +1468,76 @@ 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, rx_queue_idx;
+	int i, rxring_idx;
 	unsigned long flags;
 	u8 tmp_one = 1;
-
-	/*rx_queue_idx 0:RX_MPDU_QUEUE */
-	/*rx_queue_idx 1:RX_CMD_QUEUE */
-	for (rx_queue_idx = 0; rx_queue_idx < RTL_PCI_MAX_RX_QUEUE;
-	     rx_queue_idx++) {
-		/*
-		 *force the rx_ring[RX_MPDU_QUEUE/
-		 *RX_CMD_QUEUE].idx to the first one
-		 */