Merge branch 'wangxun-interrupts'

Jiawen Wu says:

====================
Wangxun interrupt and RxTx support

Configure interrupt, setup RxTx ring, support to receive and transmit
packets.

change log:
v3:
- Use upper_32_bits() to avoid compile warning.
- Remove useless codes.
v2:
- Andrew Lunn: https://lore.kernel.org/netdev/Y86kDphvyHj21IxK@lunn.ch/
- Add a judgment when allocate dma for descriptor.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/wangxun/Kconfig

@@ -18,6 +18,7 @@ if NET_VENDOR_WANGXUN
 
 config LIBWX
 	tristate
+	select PAGE_POOL
 	help
 	Common library for Wangxun(R) Ethernet drivers.
 

drivers/net/ethernet/wangxun/libwx/Makefile

@@ -4,4 +4,4 @@
 
 obj-$(CONFIG_LIBWX) += libwx.o
 
-libwx-objs := wx_hw.o
+libwx-objs := wx_hw.o wx_lib.o

drivers/net/ethernet/wangxun/libwx/wx_hw.c

@@ -8,13 +8,14 @@
 #include <linux/pci.h>
 
 #include "wx_type.h"
+#include "wx_lib.h"
 #include "wx_hw.h"
 
 static void wx_intr_disable(struct wx *wx, u64 qmask)
 {
 	u32 mask;
 
-	mask = (qmask & 0xFFFFFFFF);
+	mask = (qmask & U32_MAX);
 	if (mask)
 		wr32(wx, WX_PX_IMS(0), mask);
 
@@ -25,6 +26,45 @@ static void wx_intr_disable(struct wx *wx, u64 qmask)
 	}
 }
 
+void wx_intr_enable(struct wx *wx, u64 qmask)
+{
+	u32 mask;
+
+	mask = (qmask & U32_MAX);
+	if (mask)
+		wr32(wx, WX_PX_IMC(0), mask);
+	if (wx->mac.type == wx_mac_sp) {
+		mask = (qmask >> 32);
+		if (mask)
+			wr32(wx, WX_PX_IMC(1), mask);
+	}
+}
+EXPORT_SYMBOL(wx_intr_enable);
+
+/**
+ * wx_irq_disable - Mask off interrupt generation on the NIC
+ * @wx: board private structure
+ **/
+void wx_irq_disable(struct wx *wx)
+{
+	struct pci_dev *pdev = wx->pdev;
+
+	wr32(wx, WX_PX_MISC_IEN, 0);
+	wx_intr_disable(wx, WX_INTR_ALL);
+
+	if (pdev->msix_enabled) {
+		int vector;
+
+		for (vector = 0; vector < wx->num_q_vectors; vector++)
+			synchronize_irq(wx->msix_entries[vector].vector);
+
+		synchronize_irq(wx->msix_entries[vector].vector);
+	} else {
+		synchronize_irq(pdev->irq);
+	}
+}
+EXPORT_SYMBOL(wx_irq_disable);
+
 /* cmd_addr is used for some special command:
  * 1. to be sector address, when implemented erase sector command
  * 2. to be flash address when implemented read, write flash address
@@ -765,6 +805,37 @@ void wx_flush_sw_mac_table(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_flush_sw_mac_table);
 
+static int wx_add_mac_filter(struct wx *wx, u8 *addr, u16 pool)
+{
+	u32 i;
+
+	if (is_zero_ether_addr(addr))
+		return -EINVAL;
+
+	for (i = 0; i < wx->mac.num_rar_entries; i++) {
+		if (wx->mac_table[i].state & WX_MAC_STATE_IN_USE) {
+			if (ether_addr_equal(addr, wx->mac_table[i].addr)) {
+				if (wx->mac_table[i].pools != (1ULL << pool)) {
+					memcpy(wx->mac_table[i].addr, addr, ETH_ALEN);
+					wx->mac_table[i].pools |= (1ULL << pool);
+					wx_sync_mac_table(wx);
+					return i;
+				}
+			}
+		}
+
+		if (wx->mac_table[i].state & WX_MAC_STATE_IN_USE)
+			continue;
+		wx->mac_table[i].state |= (WX_MAC_STATE_MODIFIED |
+					   WX_MAC_STATE_IN_USE);
+		memcpy(wx->mac_table[i].addr, addr, ETH_ALEN);
+		wx->mac_table[i].pools |= (1ULL << pool);
+		wx_sync_mac_table(wx);
+		return i;
+	}
+	return -ENOMEM;
+}
+
 static int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 {
 	u32 i;
@@ -789,6 +860,184 @@ static int wx_del_mac_filter(struct wx *wx, u8 *addr, u16 pool)
 	return -ENOMEM;
 }
 
+static int wx_available_rars(struct wx *wx)
+{
+	u32 i, count = 0;
+
+	for (i = 0; i < wx->mac.num_rar_entries; i++) {
+		if (wx->mac_table[i].state == 0)
+			count++;
+	}
+
+	return count;
+}
+
+/**
+ * wx_write_uc_addr_list - write unicast addresses to RAR table
+ * @netdev: network interface device structure
+ * @pool: index for mac table
+ *
+ * Writes unicast address list to the RAR table.
+ * Returns: -ENOMEM on failure/insufficient address space
+ *                0 on no addresses written
+ *                X on writing X addresses to the RAR table
+ **/
+static int wx_write_uc_addr_list(struct net_device *netdev, int pool)
+{
+	struct wx *wx = netdev_priv(netdev);
+	int count = 0;
+
+	/* return ENOMEM indicating insufficient memory for addresses */
+	if (netdev_uc_count(netdev) > wx_available_rars(wx))
+		return -ENOMEM;
+
+	if (!netdev_uc_empty(netdev)) {
+		struct netdev_hw_addr *ha;
+
+		netdev_for_each_uc_addr(ha, netdev) {
+			wx_del_mac_filter(wx, ha->addr, pool);
+			wx_add_mac_filter(wx, ha->addr, pool);
+			count++;
+		}
+	}
+	return count;
+}
+
+/**
+ *  wx_mta_vector - Determines bit-vector in multicast table to set
+ *  @wx: pointer to private structure
+ *  @mc_addr: the multicast address
+ *
+ *  Extracts the 12 bits, from a multicast address, to determine which
+ *  bit-vector to set in the multicast table. The hardware uses 12 bits, from
+ *  incoming rx multicast addresses, to determine the bit-vector to check in
+ *  the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
+ *  by the MO field of the MCSTCTRL. The MO field is set during initialization
+ *  to mc_filter_type.
+ **/
+static u32 wx_mta_vector(struct wx *wx, u8 *mc_addr)
+{
+	u32 vector = 0;
+
+	switch (wx->mac.mc_filter_type) {
+	case 0:   /* use bits [47:36] of the address */
+		vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
+		break;
+	case 1:   /* use bits [46:35] of the address */
+		vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
+		break;
+	case 2:   /* use bits [45:34] of the address */
+		vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
+		break;
+	case 3:   /* use bits [43:32] of the address */
+		vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
+		break;
+	default:  /* Invalid mc_filter_type */
+		wx_err(wx, "MC filter type param set incorrectly\n");
+		break;
+	}
+
+	/* vector can only be 12-bits or boundary will be exceeded */
+	vector &= 0xFFF;
+	return vector;
+}
+
+/**
+ *  wx_set_mta - Set bit-vector in multicast table
+ *  @wx: pointer to private structure
+ *  @mc_addr: Multicast address
+ *
+ *  Sets the bit-vector in the multicast table.
+ **/
+static void wx_set_mta(struct wx *wx, u8 *mc_addr)
+{
+	u32 vector, vector_bit, vector_reg;
+
+	wx->addr_ctrl.mta_in_use++;
+
+	vector = wx_mta_vector(wx, mc_addr);
+	wx_dbg(wx, " bit-vector = 0x%03X\n", vector);
+
+	/* The MTA is a register array of 128 32-bit registers. It is treated
+	 * like an array of 4096 bits.  We want to set bit
+	 * BitArray[vector_value]. So we figure out what register the bit is
+	 * in, read it, OR in the new bit, then write back the new value.  The
+	 * register is determined by the upper 7 bits of the vector value and
+	 * the bit within that register are determined by the lower 5 bits of
+	 * the value.
+	 */
+	vector_reg = (vector >> 5) & 0x7F;
+	vector_bit = vector & 0x1F;
+	wx->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
+}
+
+/**
+ *  wx_update_mc_addr_list - Updates MAC list of multicast addresses
+ *  @wx: pointer to private structure
+ *  @netdev: pointer to net device structure
+ *
+ *  The given list replaces any existing list. Clears the MC addrs from receive
+ *  address registers and the multicast table. Uses unused receive address
+ *  registers for the first multicast addresses, and hashes the rest into the
+ *  multicast table.
+ **/
+static void wx_update_mc_addr_list(struct wx *wx, struct net_device *netdev)
+{
+	struct netdev_hw_addr *ha;
+	u32 i, psrctl;
+
+	/* Set the new number of MC addresses that we are being requested to
+	 * use.
+	 */
+	wx->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
+	wx->addr_ctrl.mta_in_use = 0;
+
+	/* Clear mta_shadow */
+	wx_dbg(wx, " Clearing MTA\n");
+	memset(&wx->mac.mta_shadow, 0, sizeof(wx->mac.mta_shadow));
+
+	/* Update mta_shadow */
+	netdev_for_each_mc_addr(ha, netdev) {
+		wx_dbg(wx, " Adding the multicast addresses:\n");
+		wx_set_mta(wx, ha->addr);
+	}
+
+	/* Enable mta */
+	for (i = 0; i < wx->mac.mcft_size; i++)
+		wr32a(wx, WX_PSR_MC_TBL(0), i,
+		      wx->mac.mta_shadow[i]);
+
+	if (wx->addr_ctrl.mta_in_use > 0) {
+		psrctl = rd32(wx, WX_PSR_CTL);
+		psrctl &= ~(WX_PSR_CTL_MO | WX_PSR_CTL_MFE);
+		psrctl |= WX_PSR_CTL_MFE |
+			  (wx->mac.mc_filter_type << WX_PSR_CTL_MO_SHIFT);
+		wr32(wx, WX_PSR_CTL, psrctl);
+	}
+
+	wx_dbg(wx, "Update mc addr list Complete\n");
+}
+
+/**
+ * wx_write_mc_addr_list - write multicast addresses to MTA
+ * @netdev: network interface device structure
+ *
+ * Writes multicast address list to the MTA hash table.
+ * Returns: 0 on no addresses written
+ *          X on writing X addresses to MTA
+ **/
+static int wx_write_mc_addr_list(struct net_device *netdev)
+{
+	struct wx *wx = netdev_priv(netdev);
+
+	if (!netif_running(netdev))
+		return 0;
+
+	wx_update_mc_addr_list(wx, netdev);
+
+	return netdev_mc_count(netdev);
+}
+
 /**
  * wx_set_mac - Change the Ethernet Address of the NIC
  * @netdev: network interface device structure
@@ -844,6 +1093,430 @@ void wx_disable_rx(struct wx *wx)
 }
 EXPORT_SYMBOL(wx_disable_rx);
 
+static void wx_enable_rx(struct wx *wx)
+{
+	u32 psrctl;
+
+	/* enable mac receiver */
+	wr32m(wx, WX_MAC_RX_CFG,
+	      WX_MAC_RX_CFG_RE, WX_MAC_RX_CFG_RE);
+
+	wr32m(wx, WX_RDB_PB_CTL,
+	      WX_RDB_PB_CTL_RXEN, WX_RDB_PB_CTL_RXEN);
+
+	if (wx->mac.set_lben) {
+		psrctl = rd32(wx, WX_PSR_CTL);
+		psrctl |= WX_PSR_CTL_SW_EN;
+		wr32(wx, WX_PSR_CTL, psrctl);
+		wx->mac.set_lben = false;
+	}
+}
+
+/**
+ * wx_set_rxpba - Initialize Rx packet buffer
+ * @wx: pointer to private structure
+ **/
+static void wx_set_rxpba(struct wx *wx)
+{
+	u32 rxpktsize, txpktsize, txpbthresh;
+
+	rxpktsize = wx->mac.rx_pb_size << WX_RDB_PB_SZ_SHIFT;
+	wr32(wx, WX_RDB_PB_SZ(0), rxpktsize);
+
+	/* Only support an equally distributed Tx packet buffer strategy. */
+	txpktsize = wx->mac.tx_pb_size;
+	txpbthresh = (txpktsize / 1024) - WX_TXPKT_SIZE_MAX;
+	wr32(wx, WX_TDB_PB_SZ(0), txpktsize);
+	wr32(wx, WX_TDM_PB_THRE(0), txpbthresh);
+}
+
+static void wx_configure_port(struct wx *wx)
+{
+	u32 value, i;
+
+	value = WX_CFG_PORT_CTL_D_VLAN | WX_CFG_PORT_CTL_QINQ;
+	wr32m(wx, WX_CFG_PORT_CTL,
+	      WX_CFG_PORT_CTL_D_VLAN |
+	      WX_CFG_PORT_CTL_QINQ,
+	      value);
+
+	wr32(wx, WX_CFG_TAG_TPID(0),
+	     ETH_P_8021Q | ETH_P_8021AD << 16);
+	wx->tpid[0] = ETH_P_8021Q;
+	wx->tpid[1] = ETH_P_8021AD;
+	for (i = 1; i < 4; i++)
+		wr32(wx, WX_CFG_TAG_TPID(i),
+		     ETH_P_8021Q | ETH_P_8021Q << 16);
+	for (i = 2; i < 8; i++)
+		wx->tpid[i] = ETH_P_8021Q;
+}
+
+/**
+ *  wx_disable_sec_rx_path - Stops the receive data path
+ *  @wx: pointer to private structure
+ *
+ *  Stops the receive data path and waits for the HW to internally empty
+ *  the Rx security block
+ **/
+static int wx_disable_sec_rx_path(struct wx *wx)
+{
+	u32 secrx;
+
+	wr32m(wx, WX_RSC_CTL,
+	      WX_RSC_CTL_RX_DIS, WX_RSC_CTL_RX_DIS);
+
+	return read_poll_timeout(rd32, secrx, secrx & WX_RSC_ST_RSEC_RDY,
+				 1000, 40000, false, wx, WX_RSC_ST);
+}
+
+/**
+ *  wx_enable_sec_rx_path - Enables the receive data path
+ *  @wx: pointer to private structure
+ *
+ *  Enables the receive data path.
+ **/
+static void wx_enable_sec_rx_path(struct wx *wx)
+{
+	wr32m(wx, WX_RSC_CTL, WX_RSC_CTL_RX_DIS, 0);
+	WX_WRITE_FLUSH(wx);
+}
+
+void wx_set_rx_mode(struct net_device *netdev)
+{
+	struct wx *wx = netdev_priv(netdev);
+	u32 fctrl, vmolr, vlnctrl;
+	int count;
+
+	/* Check for Promiscuous and All Multicast modes */
+	fctrl = rd32(wx, WX_PSR_CTL);
+	fctrl &= ~(WX_PSR_CTL_UPE | WX_PSR_CTL_MPE);
+	vmolr = rd32(wx, WX_PSR_VM_L2CTL(0));
+	vmolr &= ~(WX_PSR_VM_L2CTL_UPE |
+		   WX_PSR_VM_L2CTL_MPE |
+		   WX_PSR_VM_L2CTL_ROPE |
+		   WX_PSR_VM_L2CTL_ROMPE);
+	vlnctrl = rd32(wx, WX_PSR_VLAN_CTL);
+	vlnctrl &= ~(WX_PSR_VLAN_CTL_VFE | WX_PSR_VLAN_CTL_CFIEN);
+
+	/* set all bits that we expect to always be set */
+	fctrl |= WX_PSR_CTL_BAM | WX_PSR_CTL_MFE;
+	vmolr |= WX_PSR_VM_L2CTL_BAM |
+		 WX_PSR_VM_L2CTL_AUPE |
+		 WX_PSR_VM_L2CTL_VACC;
+	vlnctrl |= WX_PSR_VLAN_CTL_VFE;
+
+	wx->addr_ctrl.user_set_promisc = false;
+	if (netdev->flags & IFF_PROMISC) {
+		wx->addr_ctrl.user_set_promisc = true;
+		fctrl |= WX_PSR_CTL_UPE | WX_PSR_CTL_MPE;
+		/* pf don't want packets routing to vf, so clear UPE */
+		vmolr |= WX_PSR_VM_L2CTL_MPE;
+		vlnctrl &= ~WX_PSR_VLAN_CTL_VFE;
+	}
+
+	if (netdev->flags & IFF_ALLMULTI) {
+		fctrl |= WX_PSR_CTL_MPE;
+		vmolr |= WX_PSR_VM_L2CTL_MPE;
+	}
+
+	if (netdev->features & NETIF_F_RXALL) {
+		vmolr |= (WX_PSR_VM_L2CTL_UPE | WX_PSR_VM_L2CTL_MPE);
+		vlnctrl &= ~WX_PSR_VLAN_CTL_VFE;
+		/* receive bad packets */
+		wr32m(wx, WX_RSC_CTL,
+		      WX_RSC_CTL_SAVE_MAC_ERR,
+		      WX_RSC_CTL_SAVE_MAC_ERR);
+	} else {
+		vmolr |= WX_PSR_VM_L2CTL_ROPE | WX_PSR_VM_L2CTL_ROMPE;
+	}
+
+	/* Write addresses to available RAR registers, if there is not
+	 * sufficient space to store all the addresses then enable
+	 * unicast promiscuous mode
+	 */
+	count = wx_write_uc_addr_list(netdev, 0);
+	if (count < 0) {
+		vmolr &= ~WX_PSR_VM_L2CTL_ROPE;
+		vmolr |= WX_PSR_VM_L2CTL_UPE;
+	}
+
+	/* Write addresses to the MTA, if the attempt fails
+	 * then we should just turn on promiscuous mode so
+	 * that we can at least receive multicast traffic
+	 */
+	count = wx_write_mc_addr_list(netdev);
+	if (count < 0) {
+		vmolr &= ~WX_PSR_VM_L2CTL_ROMPE;
+		vmolr |= WX_PSR_VM_L2CTL_MPE;
+	}
+
+	wr32(wx, WX_PSR_VLAN_CTL, vlnctrl);
+	wr32(wx, WX_PSR_CTL, fctrl);
+	wr32(wx, WX_PSR_VM_L2CTL(0), vmolr);
+}
+EXPORT_SYMBOL(wx_set_rx_mode);
+
+static void wx_set_rx_buffer_len(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	u32 mhadd, max_frame;
+
+	max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
+	/* adjust max frame to be at least the size of a standard frame */
+	if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
+		max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN);
+
+	mhadd = rd32(wx, WX_PSR_MAX_SZ);
+	if (max_frame != mhadd)
+		wr32(wx, WX_PSR_MAX_SZ, max_frame);
+}
+
+/* Disable the specified rx queue */
+void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring)
+{
+	u8 reg_idx = ring->reg_idx;
+	u32 rxdctl;
+	int ret;
+
+	/* write value back with RRCFG.EN bit cleared */
+	wr32m(wx, WX_PX_RR_CFG(reg_idx),
+	      WX_PX_RR_CFG_RR_EN, 0);
+
+	/* the hardware may take up to 100us to really disable the rx queue */
+	ret = read_poll_timeout(rd32, rxdctl, !(rxdctl & WX_PX_RR_CFG_RR_EN),
+				10, 100, true, wx, WX_PX_RR_CFG(reg_idx));
+
+	if (ret == -ETIMEDOUT) {
+		/* Just for information */
+		wx_err(wx,
+		       "RRCFG.EN on Rx queue %d not cleared within the polling period\n",
+		       reg_idx);
+	}
+}
+EXPORT_SYMBOL(wx_disable_rx_queue);
+
+static void wx_enable_rx_queue(struct wx *wx, struct wx_ring *ring)
+{
+	u8 reg_idx = ring->reg_idx;
+	u32 rxdctl;
+	int ret;
+
+	ret = read_poll_timeout(rd32, rxdctl, rxdctl & WX_PX_RR_CFG_RR_EN,
+				1000, 10000, true, wx, WX_PX_RR_CFG(reg_idx));
+
+	if (ret == -ETIMEDOUT) {
+		/* Just for information */
+		wx_err(wx,
+		       "RRCFG.EN on Rx queue %d not set within the polling period\n",
+		       reg_idx);
+	}
+}
+
+static void wx_configure_srrctl(struct wx *wx,
+				struct wx_ring *rx_ring)
+{
+	u16 reg_idx = rx_ring->reg_idx;
+	u32 srrctl;
+
+	srrctl = rd32(wx, WX_PX_RR_CFG(reg_idx));
+	srrctl &= ~(WX_PX_RR_CFG_RR_HDR_SZ |
+		    WX_PX_RR_CFG_RR_BUF_SZ |
+		    WX_PX_RR_CFG_SPLIT_MODE);
+	/* configure header buffer length, needed for RSC */
+	srrctl |= WX_RXBUFFER_256 << WX_PX_RR_CFG_BHDRSIZE_SHIFT;
+
+	/* configure the packet buffer length */
+	srrctl |= WX_RX_BUFSZ >> WX_PX_RR_CFG_BSIZEPKT_SHIFT;
+
+	wr32(wx, WX_PX_RR_CFG(reg_idx), srrctl);
+}
+
+static void wx_configure_tx_ring(struct wx *wx,
+				 struct wx_ring *ring)
+{
+	u32 txdctl = WX_PX_TR_CFG_ENABLE;
+	u8 reg_idx = ring->reg_idx;
+	u64 tdba = ring->dma;
+	int ret;
+
+	/* disable queue to avoid issues while updating state */
+	wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
+	WX_WRITE_FLUSH(wx);
+
+	wr32(wx, WX_PX_TR_BAL(reg_idx), tdba & DMA_BIT_MASK(32));
+	wr32(wx, WX_PX_TR_BAH(reg_idx), upper_32_bits(tdba));
+
+	/* reset head and tail pointers */
+	wr32(wx, WX_PX_TR_RP(reg_idx), 0);
+	wr32(wx, WX_PX_TR_WP(reg_idx), 0);
+	ring->tail = wx->hw_addr + WX_PX_TR_WP(reg_idx);
+
+	if (ring->count < WX_MAX_TXD)
+		txdctl |= ring->count / 128 << WX_PX_TR_CFG_TR_SIZE_SHIFT;
+	txdctl |= 0x20 << WX_PX_TR_CFG_WTHRESH_SHIFT;
+
+	/* reinitialize tx_buffer_info */
+	memset(ring->tx_buffer_info, 0,
+	       sizeof(struct wx_tx_buffer) * ring->count);
+
+	/* enable queue */
+	wr32(wx, WX_PX_TR_CFG(reg_idx), txdctl);
+
+	/* poll to verify queue is enabled */
+	ret = read_poll_timeout(rd32, txdctl, txdctl & WX_PX_TR_CFG_ENABLE,
+				1000, 10000, true, wx, WX_PX_TR_CFG(reg_idx));
+	if (ret == -ETIMEDOUT)
+		wx_err(wx, "Could not enable Tx Queue %d\n", reg_idx);
+}
+
+static void wx_configure_rx_ring(struct wx *wx,
+				 struct wx_ring *ring)
+{
+	u16 reg_idx = ring->reg_idx;
+	union wx_rx_desc *rx_desc;
+	u64 rdba = ring->dma;
+	u32 rxdctl;
+
+	/* disable queue to avoid issues while updating state */
+	rxdctl = rd32(wx, WX_PX_RR_CFG(reg_idx));
+	wx_disable_rx_queue(wx, ring);
+
+	wr32(wx, WX_PX_RR_BAL(reg_idx), rdba & DMA_BIT_MASK(32));
+	wr32(wx, WX_PX_RR_BAH(reg_idx), upper_32_bits(rdba));
+
+	if (ring->count == WX_MAX_RXD)
+		rxdctl |= 0 << WX_PX_RR_CFG_RR_SIZE_SHIFT;
+	else
+		rxdctl |= (ring->count / 128) << WX_PX_RR_CFG_RR_SIZE_SHIFT;
+
+	rxdctl |= 0x1 << WX_PX_RR_CFG_RR_THER_SHIFT;
+	wr32(wx, WX_PX_RR_CFG(reg_idx), rxdctl);
+
+	/* reset head and tail pointers */
+	wr32(wx, WX_PX_RR_RP(reg_idx), 0);
+	wr32(wx, WX_PX_RR_WP(reg_idx), 0);
+	ring->tail = wx->hw_addr + WX_PX_RR_WP(reg_idx);
+
+	wx_configure_srrctl(wx, ring);
+
+	/* initialize rx_buffer_info */
+	memset(ring->rx_buffer_info, 0,
+	       sizeof(struct wx_rx_buffer) * ring->count);
+
+	/* initialize Rx descriptor 0 */
+	rx_desc = WX_RX_DESC(ring, 0);
+	rx_desc->wb.upper.length = 0;
+
+	/* enable receive descriptor ring */
+	wr32m(wx, WX_PX_RR_CFG(reg_idx),
+	      WX_PX_RR_CFG_RR_EN, WX_PX_RR_CFG_RR_EN);
+
+	wx_enable_rx_queue(wx, ring);
+	wx_alloc_rx_buffers(ring, wx_desc_unused(ring));
+}
+
+/**
+ * wx_configure_tx - Configure Transmit Unit after Reset
+ * @wx: pointer to private structure
+ *
+ * Configure the Tx unit of the MAC after a reset.
+ **/
+static void wx_configure_tx(struct wx *wx)
+{
+	u32 i;
+
+	/* TDM_CTL.TE must be before Tx queues are enabled */
+	wr32m(wx, WX_TDM_CTL,
+	      WX_TDM_CTL_TE, WX_TDM_CTL_TE);
+
+	/* Setup the HW Tx Head and Tail descriptor pointers */
+	for (i = 0; i < wx->num_tx_queues; i++)
+		wx_configure_tx_ring(wx, wx->tx_ring[i]);
+
+	wr32m(wx, WX_TSC_BUF_AE, WX_TSC_BUF_AE_THR, 0x10);
+
+	if (wx->mac.type == wx_mac_em)
+		wr32m(wx, WX_TSC_CTL, WX_TSC_CTL_TX_DIS | WX_TSC_CTL_TSEC_DIS, 0x1);
+
+	/* enable mac transmitter */
+	wr32m(wx, WX_MAC_TX_CFG,
+	      WX_MAC_TX_CFG_TE, WX_MAC_TX_CFG_TE);
+}
+
+/**
+ * wx_configure_rx - Configure Receive Unit after Reset
+ * @wx: pointer to private structure
+ *
+ * Configure the Rx unit of the MAC after a reset.
+ **/
+static void wx_configure_rx(struct wx *wx)
+{
+	u32 psrtype, i;
+	int ret;
+
+	wx_disable_rx(wx);
+
+	psrtype = WX_RDB_PL_CFG_L4HDR |
+		  WX_RDB_PL_CFG_L3HDR |
+		  WX_RDB_PL_CFG_L2HDR |
+		  WX_RDB_PL_CFG_TUN_TUNHDR |
+		  WX_RDB_PL_CFG_TUN_TUNHDR;
+	wr32(wx, WX_RDB_PL_CFG(0), psrtype);
+
+	/* enable hw crc stripping */
+	wr32m(wx, WX_RSC_CTL, WX_RSC_CTL_CRC_STRIP, WX_RSC_CTL_CRC_STRIP);
+
+	if (wx->mac.type == wx_mac_sp) {
+		u32 psrctl;
+
+		/* RSC Setup */
+		psrctl = rd32(wx, WX_PSR_CTL);
+		psrctl |= WX_PSR_CTL_RSC_ACK; /* Disable RSC for ACK packets */
+		psrctl |= WX_PSR_CTL_RSC_DIS;
+		wr32(wx, WX_PSR_CTL, psrctl);
+	}
+
+	/* set_rx_buffer_len must be called before ring initialization */
+	wx_set_rx_buffer_len(wx);
+
+	/* Setup the HW Rx Head and Tail Descriptor Pointers and
+	 * the Base and Length of the Rx Descriptor Ring
+	 */
+	for (i = 0; i < wx->num_rx_queues; i++)
+		wx_configure_rx_ring(wx, wx->rx_ring[i]);
+
+	/* Enable all receives, disable security engine prior to block traffic */
+	ret = wx_disable_sec_rx_path(wx);
+	if (ret < 0)
+		wx_err(wx, "The register status is abnormal, please check device.");
+
+	wx_enable_rx(wx);
+	wx_enable_sec_rx_path(wx);
+}
+
+static void wx_configure_isb(struct wx *wx)
+{
+	/* set ISB Address */
+	wr32(wx, WX_PX_ISB_ADDR_L, wx->isb_dma & DMA_BIT_MASK(32));
+	if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
+		wr32(wx, WX_PX_ISB_ADDR_H, upper_32_bits(wx->isb_dma));
+}
+
+void wx_configure(struct wx *wx)
+{
+	wx_set_rxpba(wx);
+	wx_configure_port(wx);
+
+	wx_set_rx_mode(wx->netdev);
+
+	wx_enable_sec_rx_path(wx);
+
+	wx_configure_tx(wx);
+	wx_configure_rx(wx);
+	wx_configure_isb(wx);
+}
+EXPORT_SYMBOL(wx_configure);
+
 /**
  *  wx_disable_pcie_master - Disable PCI-express master access
  *  @wx: pointer to hardware structure

drivers/net/ethernet/wangxun/libwx/wx_hw.h

@@ -4,6 +4,8 @@
 #ifndef _WX_HW_H_
 #define _WX_HW_H_
 
+void wx_intr_enable(struct wx *wx, u64 qmask);
+void wx_irq_disable(struct wx *wx);
 int wx_check_flash_load(struct wx *wx, u32 check_bit);
 void wx_control_hw(struct wx *wx, bool drv);
 int wx_mng_present(struct wx *wx);
@@ -20,6 +22,9 @@ void wx_mac_set_default_filter(struct wx *wx, u8 *addr);
 void wx_flush_sw_mac_table(struct wx *wx);
 int wx_set_mac(struct net_device *netdev, void *p);
 void wx_disable_rx(struct wx *wx);
+void wx_set_rx_mode(struct net_device *netdev);
+void wx_disable_rx_queue(struct wx *wx, struct wx_ring *ring);
+void wx_configure(struct wx *wx);
 int wx_disable_pcie_master(struct wx *wx);
 int wx_stop_adapter(struct wx *wx);
 void wx_reset_misc(struct wx *wx);

drivers/net/ethernet/wangxun/libwx/wx_lib.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * WangXun Gigabit PCI Express Linux driver
+ * Copyright (c) 2019 - 2022 Beijing WangXun Technology Co., Ltd.
+ */
+
+#ifndef _WX_LIB_H_
+#define _WX_LIB_H_
+
+void wx_alloc_rx_buffers(struct wx_ring *rx_ring, u16 cleaned_count);
+u16 wx_desc_unused(struct wx_ring *ring);
+netdev_tx_t wx_xmit_frame(struct sk_buff *skb,
+			  struct net_device *netdev);
+void wx_napi_enable_all(struct wx *wx);
+void wx_napi_disable_all(struct wx *wx);
+void wx_reset_interrupt_capability(struct wx *wx);
+void wx_clear_interrupt_scheme(struct wx *wx);
+int wx_init_interrupt_scheme(struct wx *wx);
+irqreturn_t wx_msix_clean_rings(int __always_unused irq, void *data);
+void wx_free_irq(struct wx *wx);
+int wx_setup_isb_resources(struct wx *wx);
+void wx_free_isb_resources(struct wx *wx);
+u32 wx_misc_isb(struct wx *wx, enum wx_isb_idx idx);
+void wx_configure_vectors(struct wx *wx);
+void wx_clean_all_rx_rings(struct wx *wx);
+void wx_clean_all_tx_rings(struct wx *wx);
+void wx_free_resources(struct wx *wx);
+int wx_setup_resources(struct wx *wx);
+void wx_get_stats64(struct net_device *netdev,
+		    struct rtnl_link_stats64 *stats);
+
+#endif /* _NGBE_LIB_H_ */

drivers/net/ethernet/wangxun/libwx/wx_type.h

@@ -5,6 +5,7 @@
 #define _WX_TYPE_H_
 
 #include <linux/bitfield.h>
+#include <linux/netdevice.h>
 
 /* Vendor ID */
 #ifndef PCI_VENDOR_ID_WANGXUN
@@ -65,21 +66,50 @@
 /* port cfg Registers */
 #define WX_CFG_PORT_CTL              0x14400
 #define WX_CFG_PORT_CTL_DRV_LOAD     BIT(3)
+#define WX_CFG_PORT_CTL_QINQ         BIT(2)
+#define WX_CFG_PORT_CTL_D_VLAN       BIT(0) /* double vlan*/
+#define WX_CFG_TAG_TPID(_i)          (0x14430 + ((_i) * 4))
+
+/* GPIO Registers */
+#define WX_GPIO_DR                   0x14800
+#define WX_GPIO_DR_0                 BIT(0) /* SDP0 Data Value */
+#define WX_GPIO_DR_1                 BIT(1) /* SDP1 Data Value */
+#define WX_GPIO_DDR                  0x14804
+#define WX_GPIO_DDR_0                BIT(0) /* SDP0 IO direction */
+#define WX_GPIO_DDR_1                BIT(1) /* SDP1 IO direction */
+#define WX_GPIO_CTL                  0x14808
+#define WX_GPIO_INTEN                0x14830
+#define WX_GPIO_INTEN_0              BIT(0)
+#define WX_GPIO_INTEN_1              BIT(1)
+#define WX_GPIO_INTMASK              0x14834
+#define WX_GPIO_INTTYPE_LEVEL        0x14838
+#define WX_GPIO_POLARITY             0x1483C
+#define WX_GPIO_EOI                  0x1484C
 
 /*********************** Transmit DMA registers **************************/
 /* transmit global control */
 #define WX_TDM_CTL                   0x18000
 /* TDM CTL BIT */
 #define WX_TDM_CTL_TE                BIT(0) /* Transmit Enable */
+#define WX_TDM_PB_THRE(_i)           (0x18020 + ((_i) * 4))
 
 /***************************** RDB registers *********************************/
 /* receive packet buffer */
 #define WX_RDB_PB_CTL                0x19000
 #define WX_RDB_PB_CTL_RXEN           BIT(31) /* Enable Receiver */
 #define WX_RDB_PB_CTL_DISABLED       BIT(0)
+#define WX_RDB_PB_SZ(_i)             (0x19020 + ((_i) * 4))
+#define WX_RDB_PB_SZ_SHIFT           10
 /* statistic */
 #define WX_RDB_PFCMACDAL             0x19210
 #define WX_RDB_PFCMACDAH             0x19214
+/* ring assignment */
+#define WX_RDB_PL_CFG(_i)            (0x19300 + ((_i) * 4))
+#define WX_RDB_PL_CFG_L4HDR          BIT(1)
+#define WX_RDB_PL_CFG_L3HDR          BIT(2)
+#define WX_RDB_PL_CFG_L2HDR          BIT(3)
+#define WX_RDB_PL_CFG_TUN_TUNHDR     BIT(4)
+#define WX_RDB_PL_CFG_TUN_OUTL2HDR   BIT(5)
 
 /******************************* PSR Registers *******************************/
 /* psr control */
@@ -97,10 +127,24 @@
 #define WX_PSR_CTL_MO_SHIFT          5
 #define WX_PSR_CTL_MO                (0x3 << WX_PSR_CTL_MO_SHIFT)
 #define WX_PSR_CTL_TPE               BIT(4)
+#define WX_PSR_MAX_SZ                0x15020
+#define WX_PSR_VLAN_CTL              0x15088
+#define WX_PSR_VLAN_CTL_CFIEN        BIT(29)  /* bit 29 */
+#define WX_PSR_VLAN_CTL_VFE          BIT(30)  /* bit 30 */
 /* mcasst/ucast overflow tbl */
 #define WX_PSR_MC_TBL(_i)            (0x15200  + ((_i) * 4))
 #define WX_PSR_UC_TBL(_i)            (0x15400 + ((_i) * 4))
 
+/* VM L2 contorl */
+#define WX_PSR_VM_L2CTL(_i)          (0x15600 + ((_i) * 4))
+#define WX_PSR_VM_L2CTL_UPE          BIT(4) /* unicast promiscuous */
+#define WX_PSR_VM_L2CTL_VACC         BIT(6) /* accept nomatched vlan */
+#define WX_PSR_VM_L2CTL_AUPE         BIT(8) /* accept untagged packets */
+#define WX_PSR_VM_L2CTL_ROMPE        BIT(9) /* accept packets in MTA tbl */
+#define WX_PSR_VM_L2CTL_ROPE         BIT(10) /* accept packets in UC tbl */
+#define WX_PSR_VM_L2CTL_BAM          BIT(11) /* accept broadcast packets */
+#define WX_PSR_VM_L2CTL_MPE          BIT(12) /* multicast promiscuous */
+
 /* Management */
 #define WX_PSR_MNG_FLEX_SEL          0x1582C
 #define WX_PSR_MNG_FLEX_DW_L(_i)     (0x15A00 + ((_i) * 16))
@@ -122,6 +166,27 @@
 #define WX_PSR_MAC_SWC_IDX           0x16210
 #define WX_CLEAR_VMDQ_ALL            0xFFFFFFFFU
 
+/********************************* RSEC **************************************/
+/* general rsec */
+#define WX_RSC_CTL                   0x17000
+#define WX_RSC_CTL_SAVE_MAC_ERR      BIT(6)
+#define WX_RSC_CTL_CRC_STRIP         BIT(2)
+#define WX_RSC_CTL_RX_DIS            BIT(1)
+#define WX_RSC_ST                    0x17004
+#define WX_RSC_ST_RSEC_RDY           BIT(0)
+
+/****************************** TDB ******************************************/
+#define WX_TDB_PB_SZ(_i)             (0x1CC00 + ((_i) * 4))
+#define WX_TXPKT_SIZE_MAX            0xA /* Max Tx Packet size */
+
+/****************************** TSEC *****************************************/
+/* Security Control Registers */
+#define WX_TSC_CTL                   0x1D000
+#define WX_TSC_CTL_TX_DIS            BIT(1)
+#define WX_TSC_CTL_TSEC_DIS          BIT(0)
+#define WX_TSC_BUF_AE                0x1D00C
+#define WX_TSC_BUF_AE_THR            GENMASK(9, 0)
+
 /************************************** MNG ********************************/
 #define WX_MNG_SWFW_SYNC             0x1E008
 #define WX_MNG_SWFW_SYNC_SW_MB       BIT(2)
@@ -135,6 +200,7 @@
 #define WX_MAC_TX_CFG                0x11000
 #define WX_MAC_TX_CFG_TE             BIT(0)
 #define WX_MAC_TX_CFG_SPEED_MASK     GENMASK(30, 29)
+#define WX_MAC_TX_CFG_SPEED_10G      FIELD_PREP(WX_MAC_TX_CFG_SPEED_MASK, 0)
 #define WX_MAC_TX_CFG_SPEED_1G       FIELD_PREP(WX_MAC_TX_CFG_SPEED_MASK, 3)
 #define WX_MAC_RX_CFG                0x11004
 #define WX_MAC_RX_CFG_RE             BIT(0)
@@ -151,10 +217,34 @@
 /* Interrupt Registers */
 #define WX_BME_CTL                   0x12020
 #define WX_PX_MISC_IC                0x100
+#define WX_PX_MISC_ICS               0x104
+#define WX_PX_MISC_IEN               0x108
+#define WX_PX_INTA                   0x110
+#define WX_PX_GPIE                   0x118
+#define WX_PX_GPIE_MODEL             BIT(0)
+#define WX_PX_IC                     0x120
 #define WX_PX_IMS(_i)                (0x140 + (_i) * 4)
+#define WX_PX_IMC(_i)                (0x150 + (_i) * 4)
+#define WX_PX_ISB_ADDR_L             0x160
+#define WX_PX_ISB_ADDR_H             0x164
 #define WX_PX_TRANSACTION_PENDING    0x168
+#define WX_PX_ITRSEL                 0x180
+#define WX_PX_ITR(_i)                (0x200 + (_i) * 4)
+#define WX_PX_ITR_CNT_WDIS           BIT(31)
+#define WX_PX_MISC_IVAR              0x4FC
+#define WX_PX_IVAR(_i)               (0x500 + (_i) * 4)
+
+#define WX_PX_IVAR_ALLOC_VAL         0x80 /* Interrupt Allocation valid */
+#define WX_7K_ITR                    595
+#define WX_12K_ITR                   336
+#define WX_SP_MAX_EITR               0x00000FF8U
+#define WX_EM_MAX_EITR               0x00007FFCU
 
 /* transmit DMA Registers */
+#define WX_PX_TR_BAL(_i)             (0x03000 + ((_i) * 0x40))
+#define WX_PX_TR_BAH(_i)             (0x03004 + ((_i) * 0x40))
+#define WX_PX_TR_WP(_i)              (0x03008 + ((_i) * 0x40))
+#define WX_PX_TR_RP(_i)              (0x0300C + ((_i) * 0x40))
 #define WX_PX_TR_CFG(_i)             (0x03010 + ((_i) * 0x40))
 /* Transmit Config masks */
 #define WX_PX_TR_CFG_ENABLE          BIT(0) /* Ena specific Tx Queue */
@@ -164,8 +254,22 @@
 #define WX_PX_TR_CFG_THRE_SHIFT      8
 
 /* Receive DMA Registers */
+#define WX_PX_RR_BAL(_i)             (0x01000 + ((_i) * 0x40))
+#define WX_PX_RR_BAH(_i)             (0x01004 + ((_i) * 0x40))
+#define WX_PX_RR_WP(_i)              (0x01008 + ((_i) * 0x40))
+#define WX_PX_RR_RP(_i)              (0x0100C + ((_i) * 0x40))
 #define WX_PX_RR_CFG(_i)             (0x01010 + ((_i) * 0x40))
 /* PX_RR_CFG bit definitions */
+#define WX_PX_RR_CFG_SPLIT_MODE      BIT(26)
+#define WX_PX_RR_CFG_RR_THER_SHIFT   16
+#define WX_PX_RR_CFG_RR_HDR_SZ       GENMASK(15, 12)
+#define WX_PX_RR_CFG_RR_BUF_SZ       GENMASK(11, 8)
+#define WX_PX_RR_CFG_BHDRSIZE_SHIFT  6 /* 64byte resolution (>> 6)
+					* + at bit 8 offset (<< 12)
+					*  = (<< 6)
+					*/
+#define WX_PX_RR_CFG_BSIZEPKT_SHIFT  2 /* so many KBs */
+#define WX_PX_RR_CFG_RR_SIZE_SHIFT   1
 #define WX_PX_RR_CFG_RR_EN           BIT(0)
 
 /* Number of 80 microseconds we wait for PCI Express master disable */
@@ -193,8 +297,46 @@
 #define WX_MAC_STATE_MODIFIED        0x2
 #define WX_MAC_STATE_IN_USE          0x4
 
+#define WX_MAX_RXD                   8192
+#define WX_MAX_TXD                   8192
+
+/* Supported Rx Buffer Sizes */
+#define WX_RXBUFFER_256      256    /* Used for skb receive header */
+#define WX_RXBUFFER_2K       2048
+#define WX_MAX_RXBUFFER      16384  /* largest size for single descriptor */
+
+#if MAX_SKB_FRAGS < 8
+#define WX_RX_BUFSZ      ALIGN(WX_MAX_RXBUFFER / MAX_SKB_FRAGS, 1024)
+#else
+#define WX_RX_BUFSZ      WX_RXBUFFER_2K
+#endif
+
+#define WX_RX_BUFFER_WRITE   16      /* Must be power of 2 */
+
+#define WX_MAX_DATA_PER_TXD  BIT(14)
+/* Tx Descriptors needed, worst case */
+#define TXD_USE_COUNT(S)     DIV_ROUND_UP((S), WX_MAX_DATA_PER_TXD)
+#define DESC_NEEDED          (MAX_SKB_FRAGS + 4)
+
+/* Ether Types */
+#define WX_ETH_P_CNM                 0x22E7
+
 #define WX_CFG_PORT_ST               0x14404
 
+/******************* Receive Descriptor bit definitions **********************/
+#define WX_RXD_STAT_DD               BIT(0) /* Done */
+#define WX_RXD_STAT_EOP              BIT(1) /* End of Packet */
+
+#define WX_RXD_ERR_RXE               BIT(29) /* Any MAC Error */
+
+/*********************** Transmit Descriptor Config Masks ****************/
+#define WX_TXD_STAT_DD               BIT(0)  /* Descriptor Done */
+#define WX_TXD_DTYP_DATA             0       /* Adv Data Descriptor */
+#define WX_TXD_PAYLEN_SHIFT          13      /* Desc PAYLEN shift */
+#define WX_TXD_EOP                   BIT(24) /* End of Packet */
+#define WX_TXD_IFCS                  BIT(25) /* Insert FCS */
+#define WX_TXD_RS                    BIT(27) /* Report Status */
+
 /* Host Interface Command Structures */
 struct wx_hic_hdr {
 	u8 cmd;
@@ -270,9 +412,12 @@ struct wx_mac_info {
 	bool set_lben;
 	u8 addr[ETH_ALEN];
 	u8 perm_addr[ETH_ALEN];
+	u32 mta_shadow[128];
 	s32 mc_filter_type;
 	u32 mcft_size;
 	u32 num_rar_entries;
+	u32 rx_pb_size;
+	u32 tx_pb_size;
 	u32 max_tx_queues;
 	u32 max_rx_queues;
 
@@ -312,6 +457,161 @@ enum wx_reset_type {
 	WX_GLOBAL_RESET
 };
 
+struct wx_cb {
+	dma_addr_t dma;
+	u16     append_cnt;      /* number of skb's appended */
+	bool    page_released;
+	bool    dma_released;
+};
+
+#define WX_CB(skb) ((struct wx_cb *)(skb)->cb)
+
+/* Transmit Descriptor */
+union wx_tx_desc {
+	struct {
+		__le64 buffer_addr; /* Address of descriptor's data buf */
+		__le32 cmd_type_len;
+		__le32 olinfo_status;
+	} read;
+	struct {
+		__le64 rsvd; /* Reserved */
+		__le32 nxtseq_seed;
+		__le32 status;
+	} wb;
+};
+
+/* Receive Descriptor */
+union wx_rx_desc {
+	struct {
+		__le64 pkt_addr; /* Packet buffer address */
+		__le64 hdr_addr; /* Header buffer address */
+	} read;
+	struct {
+		struct {
+			union {
+				__le32 data;
+				struct {
+					__le16 pkt_info; /* RSS, Pkt type */
+					__le16 hdr_info; /* Splithdr, hdrlen */
+				} hs_rss;
+			} lo_dword;
+			union {
+				__le32 rss; /* RSS Hash */
+				struct {
+					__le16 ip_id; /* IP id */
+					__le16 csum; /* Packet Checksum */
+				} csum_ip;
+			} hi_dword;
+		} lower;
+		struct {
+			__le32 status_error; /* ext status/error */
+			__le16 length; /* Packet length */
+			__le16 vlan; /* VLAN tag */
+		} upper;
+	} wb;  /* writeback */
+};
+
+#define WX_RX_DESC(R, i)     \
+	(&(((union wx_rx_desc *)((R)->desc))[i]))
+#define WX_TX_DESC(R, i)     \
+	(&(((union wx_tx_desc *)((R)->desc))[i]))
+
+/* wrapper around a pointer to a socket buffer,
+ * so a DMA handle can be stored along with the buffer
+ */
+struct wx_tx_buffer {
+	union wx_tx_desc *next_to_watch;
+	struct sk_buff *skb;
+	unsigned int bytecount;
+	unsigned short gso_segs;
+	DEFINE_DMA_UNMAP_ADDR(dma);
+	DEFINE_DMA_UNMAP_LEN(len);
+};
+
+struct wx_rx_buffer {
+	struct sk_buff *skb;
+	dma_addr_t dma;
+	dma_addr_t page_dma;
+	struct page *page;
+	unsigned int page_offset;
+	u16 pagecnt_bias;
+};
+
+struct wx_queue_stats {
+	u64 packets;
+	u64 bytes;
+};
+
+/* iterator for handling rings in ring container */
+#define wx_for_each_ring(posm, headm) \
+	for (posm = (headm).ring; posm; posm = posm->next)
+
+struct wx_ring_container {
+	struct wx_ring *ring;           /* pointer to linked list of rings */
+	unsigned int total_bytes;       /* total bytes processed this int */
+	unsigned int total_packets;     /* total packets processed this int */
+	u8 count;                       /* total number of rings in vector */
+	u8 itr;                         /* current ITR setting for ring */
+};
+
+struct wx_ring {
+	struct wx_ring *next;           /* pointer to next ring in q_vector */
+	struct wx_q_vector *q_vector;   /* backpointer to host q_vector */
+	struct net_device *netdev;      /* netdev ring belongs to */
+	struct device *dev;             /* device for DMA mapping */
+	struct page_pool *page_pool;
+	void *desc;                     /* descriptor ring memory */
+	union {
+		struct wx_tx_buffer *tx_buffer_info;
+		struct wx_rx_buffer *rx_buffer_info;
+	};
+	u8 __iomem *tail;
+	dma_addr_t dma;                 /* phys. address of descriptor ring */
+	unsigned int size;              /* length in bytes */
+
+	u16 count;                      /* amount of descriptors */
+
+	u8 queue_index; /* needed for multiqueue queue management */
+	u8 reg_idx;                     /* holds the special value that gets
+					 * the hardware register offset
+					 * associated with this ring, which is
+					 * different for DCB and RSS modes
+					 */
+	u16 next_to_use;
+	u16 next_to_clean;
+	u16 next_to_alloc;
+
+	struct wx_queue_stats stats;
+	struct u64_stats_sync syncp;
+} ____cacheline_internodealigned_in_smp;
+
+struct wx_q_vector {
+	struct wx *wx;
+	int cpu;        /* CPU for DCA */
+	int numa_node;
+	u16 v_idx;      /* index of q_vector within array, also used for
+			 * finding the bit in EICR and friends that
+			 * represents the vector for this ring
+			 */
+	u16 itr;        /* Interrupt throttle rate written to EITR */
+	struct wx_ring_container rx, tx;
+	struct napi_struct napi;
+	struct rcu_head rcu;    /* to avoid race with update stats on free */
+
+	char name[IFNAMSIZ + 17];
+
+	/* for dynamic allocation of rings associated with this q_vector */
+	struct wx_ring ring[0] ____cacheline_internodealigned_in_smp;
+};
+
+enum wx_isb_idx {
+	WX_ISB_HEADER,
+	WX_ISB_MISC,
+	WX_ISB_VEC0,
+	WX_ISB_VEC1,
+	WX_ISB_MAX
+};
+
 struct wx {
 	u8 __iomem *hw_addr;
 	struct pci_dev *pdev;
@@ -331,6 +631,7 @@ struct wx {
 	u16 oem_svid;
 	u16 msg_enable;
 	bool adapter_stopped;
+	u16 tpid[8];
 	char eeprom_id[32];
 	enum wx_reset_type reset_type;
 
@@ -360,6 +661,18 @@ struct wx {
 	u32 tx_ring_count;
 	u32 rx_ring_count;
 
+	struct wx_ring *tx_ring[64] ____cacheline_aligned_in_smp;
+	struct wx_ring *rx_ring[64];
+	struct wx_q_vector *q_vector[64];
+
+	unsigned int queues_per_pool;
+	struct msix_entry *msix_entries;
+
+	/* misc interrupt status block */
+	dma_addr_t isb_dma;
+	u32 *isb_mem;
+	u32 isb_tag[WX_ISB_MAX];
+
 #define WX_MAX_RETA_ENTRIES 128
 	u8 rss_indir_tbl[WX_MAX_RETA_ENTRIES];
 
@@ -371,6 +684,7 @@ struct wx {
 };
 
 #define WX_INTR_ALL (~0ULL)
+#define WX_INTR_Q(i) BIT(i)
 
 /* register operations */
 #define wr32(a, reg, value)	writel((value), ((a)->hw_addr + (reg)))

drivers/net/ethernet/wangxun/ngbe/ngbe_main.c

@@ -13,6 +13,7 @@
 
 #include "../libwx/wx_type.h"
 #include "../libwx/wx_hw.h"
+#include "../libwx/wx_lib.h"
 #include "ngbe_type.h"
 #include "ngbe_mdio.h"
 #include "ngbe_hw.h"
@@ -112,6 +113,9 @@ static int ngbe_sw_init(struct wx *wx)
 	wx->mac.num_rar_entries = NGBE_RAR_ENTRIES;
 	wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES;
 	wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES;
+	wx->mac.mcft_size = NGBE_MC_TBL_SIZE;
+	wx->mac.rx_pb_size = NGBE_RX_PB_SIZE;
+	wx->mac.tx_pb_size = NGBE_TDB_PB_SZ;
 
 	/* PCI config space info */
 	err = wx_sw_init(wx);
@@ -148,27 +152,211 @@ static int ngbe_sw_init(struct wx *wx)
 	return 0;
 }
 
+/**
+ * ngbe_irq_enable - Enable default interrupt generation settings
+ * @wx: board private structure
+ * @queues: enable all queues interrupts
+ **/
+static void ngbe_irq_enable(struct wx *wx, bool queues)
+{
+	u32 mask;
+
+	/* enable misc interrupt */
+	mask = NGBE_PX_MISC_IEN_MASK;
+
+	wr32(wx, WX_GPIO_DDR, WX_GPIO_DDR_0);
+	wr32(wx, WX_GPIO_INTEN, WX_GPIO_INTEN_0 | WX_GPIO_INTEN_1);
+	wr32(wx, WX_GPIO_INTTYPE_LEVEL, 0x0);
+	wr32(wx, WX_GPIO_POLARITY, wx->gpio_ctrl ? 0 : 0x3);
+
+	wr32(wx, WX_PX_MISC_IEN, mask);
+
+	/* mask interrupt */
+	if (queues)
+		wx_intr_enable(wx, NGBE_INTR_ALL);
+	else
+		wx_intr_enable(wx, NGBE_INTR_MISC(wx));
+}
+
+/**
+ * ngbe_intr - msi/legacy mode Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t ngbe_intr(int __always_unused irq, void *data)
+{
+	struct wx_q_vector *q_vector;
+	struct wx *wx  = data;
+	struct pci_dev *pdev;
+	u32 eicr;
+
+	q_vector = wx->q_vector[0];
+	pdev = wx->pdev;
+
+	eicr = wx_misc_isb(wx, WX_ISB_VEC0);
+	if (!eicr) {
+		/* shared interrupt alert!
+		 * the interrupt that we masked before the EICR read.
+		 */
+		if (netif_running(wx->netdev))
+			ngbe_irq_enable(wx, true);
+		return IRQ_NONE;        /* Not our interrupt */
+	}
+	wx->isb_mem[WX_ISB_VEC0] = 0;
+	if (!(pdev->msi_enabled))
+		wr32(wx, WX_PX_INTA, 1);
+
+	wx->isb_mem[WX_ISB_MISC] = 0;
+	/* would disable interrupts here but it is auto disabled */
+	napi_schedule_irqoff(&q_vector->napi);
+
+	if (netif_running(wx->netdev))
+		ngbe_irq_enable(wx, false);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data)
+{
+	struct wx *wx = data;
+
+	/* re-enable the original interrupt state, no lsc, no queues */
+	if (netif_running(wx->netdev))
+		ngbe_irq_enable(wx, false);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * ngbe_request_msix_irqs - Initialize MSI-X interrupts
+ * @wx: board private structure
+ *
+ * ngbe_request_msix_irqs allocates MSI-X vectors and requests
+ * interrupts from the kernel.
+ **/
+static int ngbe_request_msix_irqs(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	int vector, err;
+
+	for (vector = 0; vector < wx->num_q_vectors; vector++) {
+		struct wx_q_vector *q_vector = wx->q_vector[vector];
+		struct msix_entry *entry = &wx->msix_entries[vector];
+
+		if (q_vector->tx.ring && q_vector->rx.ring)
+			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
+				 "%s-TxRx-%d", netdev->name, entry->entry);
+		else
+			/* skip this unused q_vector */
+			continue;
+
+		err = request_irq(entry->vector, wx_msix_clean_rings, 0,
+				  q_vector->name, q_vector);
+		if (err) {
+			wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n",
+			       q_vector->name, err);
+			goto free_queue_irqs;
+		}
+	}
+
+	err = request_irq(wx->msix_entries[vector].vector,
+			  ngbe_msix_other, 0, netdev->name, wx);
+
+	if (err) {
+		wx_err(wx, "request_irq for msix_other failed: %d\n", err);
+		goto free_queue_irqs;
+	}
+
+	return 0;
+
+free_queue_irqs:
+	while (vector) {
+		vector--;
+		free_irq(wx->msix_entries[vector].vector,
+			 wx->q_vector[vector]);
+	}
+	wx_reset_interrupt_capability(wx);
+	return err;
+}
+
+/**
+ * ngbe_request_irq - initialize interrupts
+ * @wx: board private structure
+ *
+ * Attempts to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int ngbe_request_irq(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	struct pci_dev *pdev = wx->pdev;
+	int err;
+
+	if (pdev->msix_enabled)
+		err = ngbe_request_msix_irqs(wx);
+	else if (pdev->msi_enabled)
+		err = request_irq(pdev->irq, ngbe_intr, 0,
+				  netdev->name, wx);
+	else
+		err = request_irq(pdev->irq, ngbe_intr, IRQF_SHARED,
+				  netdev->name, wx);
+
+	if (err)
+		wx_err(wx, "request_irq failed, Error %d\n", err);
+
+	return err;
+}
+
 static void ngbe_disable_device(struct wx *wx)
 {
 	struct net_device *netdev = wx->netdev;
+	u32 i;
 
+	/* disable all enabled rx queues */
+	for (i = 0; i < wx->num_rx_queues; i++)
+		/* this call also flushes the previous write */
+		wx_disable_rx_queue(wx, wx->rx_ring[i]);
 	/* disable receives */
 	wx_disable_rx(wx);
+	wx_napi_disable_all(wx);
+	netif_tx_stop_all_queues(netdev);
 	netif_tx_disable(netdev);
 	if (wx->gpio_ctrl)
 		ngbe_sfp_modules_txrx_powerctl(wx, false);
+	wx_irq_disable(wx);
+	/* disable transmits in the hardware now that interrupts are off */
+	for (i = 0; i < wx->num_tx_queues; i++) {
+		u8 reg_idx = wx->tx_ring[i]->reg_idx;
+
+		wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
+	}
 }
 
 static void ngbe_down(struct wx *wx)
 {
 	phy_stop(wx->phydev);
 	ngbe_disable_device(wx);
+	wx_clean_all_tx_rings(wx);
+	wx_clean_all_rx_rings(wx);
 }
 
 static void ngbe_up(struct wx *wx)
 {
+	wx_configure_vectors(wx);
+
+	/* make sure to complete pre-operations */
+	smp_mb__before_atomic();
+	wx_napi_enable_all(wx);
+	/* enable transmits */
+	netif_tx_start_all_queues(wx->netdev);
+
+	/* clear any pending interrupts, may auto mask */
+	rd32(wx, WX_PX_IC);
+	rd32(wx, WX_PX_MISC_IC);
+	ngbe_irq_enable(wx, true);
 	if (wx->gpio_ctrl)
 		ngbe_sfp_modules_txrx_powerctl(wx, true);
+
 	phy_start(wx->phydev);
 }
 
@@ -187,12 +375,39 @@ static int ngbe_open(struct net_device *netdev)
 	int err;
 
 	wx_control_hw(wx, true);
-	err = ngbe_phy_connect(wx);
+
+	err = wx_setup_resources(wx);
 	if (err)
 		return err;
+
+	wx_configure(wx);
+
+	err = ngbe_request_irq(wx);
+	if (err)
+		goto err_free_resources;
+
+	err = ngbe_phy_connect(wx);
+	if (err)
+		goto err_free_irq;
+
+	err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
+	if (err)
+		goto err_dis_phy;
+
+	err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
+	if (err)
+		goto err_dis_phy;
+
 	ngbe_up(wx);
 
 	return 0;
+err_dis_phy:
+	phy_disconnect(wx->phydev);
+err_free_irq:
+	wx_free_irq(wx);
+err_free_resources:
+	wx_free_resources(wx);
+	return err;
 }
 
 /**
@@ -211,18 +426,14 @@ static int ngbe_close(struct net_device *netdev)
 	struct wx *wx = netdev_priv(netdev);
 
 	ngbe_down(wx);
+	wx_free_irq(wx);
+	wx_free_resources(wx);
 	phy_disconnect(wx->phydev);
 	wx_control_hw(wx, false);
 
 	return 0;
 }
 
-static netdev_tx_t ngbe_xmit_frame(struct sk_buff *skb,
-				   struct net_device *netdev)
-{
-	return NETDEV_TX_OK;
-}
-
 static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
 {
 	struct wx *wx = pci_get_drvdata(pdev);
@@ -258,9 +469,11 @@ static void ngbe_shutdown(struct pci_dev *pdev)
 static const struct net_device_ops ngbe_netdev_ops = {
 	.ndo_open               = ngbe_open,
 	.ndo_stop               = ngbe_close,
-	.ndo_start_xmit         = ngbe_xmit_frame,
+	.ndo_start_xmit         = wx_xmit_frame,
+	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
+	.ndo_get_stats64        = wx_get_stats64,
 };
 
 /**
@@ -336,6 +549,17 @@ static int ngbe_probe(struct pci_dev *pdev,
 	netdev->netdev_ops = &ngbe_netdev_ops;
 
 	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->features = NETIF_F_SG;
+
+	/* copy netdev features into list of user selectable features */
+	netdev->hw_features |= netdev->features |
+			       NETIF_F_RXALL;
+
+	netdev->priv_flags |= IFF_UNICAST_FLT;
+	netdev->priv_flags |= IFF_SUPP_NOFCS;
+
+	netdev->min_mtu = ETH_MIN_MTU;
+	netdev->max_mtu = NGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN);
 
 	wx->bd_number = func_nums;
 	/* setup the private structure */
@@ -411,10 +635,14 @@ static int ngbe_probe(struct pci_dev *pdev,
 	eth_hw_addr_set(netdev, wx->mac.perm_addr);
 	wx_mac_set_default_filter(wx, wx->mac.perm_addr);
 
+	err = wx_init_interrupt_scheme(wx);
+	if (err)
+		goto err_free_mac_table;
+
 	/* phy Interface Configuration */
 	err = ngbe_mdio_init(wx);
 	if (err)
-		goto err_free_mac_table;
+		goto err_clear_interrupt_scheme;
 
 	err = register_netdev(netdev);
 	if (err)
@@ -431,6 +659,8 @@ static int ngbe_probe(struct pci_dev *pdev,
 
 err_register:
 	wx_control_hw(wx, false);
+err_clear_interrupt_scheme:
+	wx_clear_interrupt_scheme(wx);
 err_free_mac_table:
 	kfree(wx->mac_table);
 err_pci_release_regions:
@@ -462,6 +692,7 @@ static void ngbe_remove(struct pci_dev *pdev)
 				     pci_select_bars(pdev, IORESOURCE_MEM));
 
 	kfree(wx->mac_table);
+	wx_clear_interrupt_scheme(wx);
 	pci_disable_pcie_error_reporting(pdev);
 
 	pci_disable_device(pdev);

drivers/net/ethernet/wangxun/ngbe/ngbe_type.h

@@ -90,6 +90,20 @@ enum NGBE_MSCA_CMD_value {
 #define NGBE_GPIO_DDR_0				BIT(0) /* SDP0 IO direction */
 #define NGBE_GPIO_DDR_1				BIT(1) /* SDP1 IO direction */
 
+/* Extended Interrupt Enable Set */
+#define NGBE_PX_MISC_IEN_DEV_RST		BIT(10)
+#define NGBE_PX_MISC_IEN_ETH_LK			BIT(18)
+#define NGBE_PX_MISC_IEN_INT_ERR		BIT(20)
+#define NGBE_PX_MISC_IEN_GPIO			BIT(26)
+#define NGBE_PX_MISC_IEN_MASK ( \
+				NGBE_PX_MISC_IEN_DEV_RST | \
+				NGBE_PX_MISC_IEN_ETH_LK | \
+				NGBE_PX_MISC_IEN_INT_ERR | \
+				NGBE_PX_MISC_IEN_GPIO)
+
+#define NGBE_INTR_ALL				0x1FF
+#define NGBE_INTR_MISC(A)			BIT((A)->num_q_vectors)
+
 #define NGBE_PHY_CONFIG(reg_offset)		(0x14000 + ((reg_offset) * 4))
 #define NGBE_CFG_LAN_SPEED			0x14440
 #define NGBE_CFG_PORT_ST			0x14404
@@ -120,6 +134,10 @@ enum NGBE_MSCA_CMD_value {
 #define NGBE_ETH_LENGTH_OF_ADDRESS		6
 #define NGBE_MAX_MSIX_VECTORS			0x09
 #define NGBE_RAR_ENTRIES			32
+#define NGBE_RX_PB_SIZE				42
+#define NGBE_MC_TBL_SIZE			128
+#define NGBE_TDB_PB_SZ				(20 * 1024) /* 160KB Packet Buffer */
+#define NGBE_MAX_JUMBO_FRAME_SIZE		9432 /* max payload 9414 */
 
 /* TX/RX descriptor defines */
 #define NGBE_DEFAULT_TXD			512 /* default ring size */

drivers/net/ethernet/wangxun/txgbe/txgbe_main.c

@@ -11,6 +11,7 @@
 #include <net/ip.h>
 
 #include "../libwx/wx_type.h"
+#include "../libwx/wx_lib.h"
 #include "../libwx/wx_hw.h"
 #include "txgbe_type.h"
 #include "txgbe_hw.h"
@@ -72,9 +73,177 @@ static int txgbe_enumerate_functions(struct wx *wx)
 	return physfns;
 }
 
+/**
+ * txgbe_irq_enable - Enable default interrupt generation settings
+ * @wx: pointer to private structure
+ * @queues: enable irqs for queues
+ **/
+static void txgbe_irq_enable(struct wx *wx, bool queues)
+{
+	/* unmask interrupt */
+	wx_intr_enable(wx, TXGBE_INTR_MISC(wx));
+	if (queues)
+		wx_intr_enable(wx, TXGBE_INTR_QALL(wx));
+}
+
+/**
+ * txgbe_intr - msi/legacy mode Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ **/
+static irqreturn_t txgbe_intr(int __always_unused irq, void *data)
+{
+	struct wx_q_vector *q_vector;
+	struct wx *wx  = data;
+	struct pci_dev *pdev;
+	u32 eicr;
+
+	q_vector = wx->q_vector[0];
+	pdev = wx->pdev;
+
+	eicr = wx_misc_isb(wx, WX_ISB_VEC0);
+	if (!eicr) {
+		/* shared interrupt alert!
+		 * the interrupt that we masked before the ICR read.
+		 */
+		if (netif_running(wx->netdev))
+			txgbe_irq_enable(wx, true);
+		return IRQ_NONE;        /* Not our interrupt */
+	}
+	wx->isb_mem[WX_ISB_VEC0] = 0;
+	if (!(pdev->msi_enabled))
+		wr32(wx, WX_PX_INTA, 1);
+
+	wx->isb_mem[WX_ISB_MISC] = 0;
+	/* would disable interrupts here but it is auto disabled */
+	napi_schedule_irqoff(&q_vector->napi);
+
+	/* re-enable link(maybe) and non-queue interrupts, no flush.
+	 * txgbe_poll will re-enable the queue interrupts
+	 */
+	if (netif_running(wx->netdev))
+		txgbe_irq_enable(wx, false);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t txgbe_msix_other(int __always_unused irq, void *data)
+{
+	struct wx *wx = data;
+
+	/* re-enable the original interrupt state */
+	if (netif_running(wx->netdev))
+		txgbe_irq_enable(wx, false);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * txgbe_request_msix_irqs - Initialize MSI-X interrupts
+ * @wx: board private structure
+ *
+ * Allocate MSI-X vectors and request interrupts from the kernel.
+ **/
+static int txgbe_request_msix_irqs(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	int vector, err;
+
+	for (vector = 0; vector < wx->num_q_vectors; vector++) {
+		struct wx_q_vector *q_vector = wx->q_vector[vector];
+		struct msix_entry *entry = &wx->msix_entries[vector];
+
+		if (q_vector->tx.ring && q_vector->rx.ring)
+			snprintf(q_vector->name, sizeof(q_vector->name) - 1,
+				 "%s-TxRx-%d", netdev->name, entry->entry);
+		else
+			/* skip this unused q_vector */
+			continue;
+
+		err = request_irq(entry->vector, wx_msix_clean_rings, 0,
+				  q_vector->name, q_vector);
+		if (err) {
+			wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n",
+			       q_vector->name, err);
+			goto free_queue_irqs;
+		}
+	}
+
+	err = request_irq(wx->msix_entries[vector].vector,
+			  txgbe_msix_other, 0, netdev->name, wx);
+	if (err) {
+		wx_err(wx, "request_irq for msix_other failed: %d\n", err);
+		goto free_queue_irqs;
+	}
+
+	return 0;
+
+free_queue_irqs:
+	while (vector) {
+		vector--;
+		free_irq(wx->msix_entries[vector].vector,
+			 wx->q_vector[vector]);
+	}
+	wx_reset_interrupt_capability(wx);
+	return err;
+}
+
+/**
+ * txgbe_request_irq - initialize interrupts
+ * @wx: board private structure
+ *
+ * Attempt to configure interrupts using the best available
+ * capabilities of the hardware and kernel.
+ **/
+static int txgbe_request_irq(struct wx *wx)
+{
+	struct net_device *netdev = wx->netdev;
+	struct pci_dev *pdev = wx->pdev;
+	int err;
+
+	if (pdev->msix_enabled)
+		err = txgbe_request_msix_irqs(wx);
+	else if (pdev->msi_enabled)
+		err = request_irq(wx->pdev->irq, &txgbe_intr, 0,
+				  netdev->name, wx);
+	else
+		err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED,
+				  netdev->name, wx);
+
+	if (err)
+		wx_err(wx, "request_irq failed, Error %d\n", err);
+
+	return err;
+}
+
 static void txgbe_up_complete(struct wx *wx)
 {
+	u32 reg;
+
 	wx_control_hw(wx, true);
+	wx_configure_vectors(wx);
+
+	/* make sure to complete pre-operations */
+	smp_mb__before_atomic();
+	wx_napi_enable_all(wx);
+
+	/* clear any pending interrupts, may auto mask */
+	rd32(wx, WX_PX_IC);
+	rd32(wx, WX_PX_MISC_IC);
+	txgbe_irq_enable(wx, true);
+
+	/* Configure MAC Rx and Tx when link is up */
+	reg = rd32(wx, WX_MAC_RX_CFG);
+	wr32(wx, WX_MAC_RX_CFG, reg);
+	wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
+	reg = rd32(wx, WX_MAC_WDG_TIMEOUT);
+	wr32(wx, WX_MAC_WDG_TIMEOUT, reg);
+	reg = rd32(wx, WX_MAC_TX_CFG);
+	wr32(wx, WX_MAC_TX_CFG, (reg & ~WX_MAC_TX_CFG_SPEED_MASK) | WX_MAC_TX_CFG_SPEED_10G);
+
+	/* enable transmits */
+	netif_tx_start_all_queues(wx->netdev);
+	netif_carrier_on(wx->netdev);
 }
 
 static void txgbe_reset(struct wx *wx)
@@ -96,14 +265,24 @@ static void txgbe_reset(struct wx *wx)
 static void txgbe_disable_device(struct wx *wx)
 {
 	struct net_device *netdev = wx->netdev;
+	u32 i;
 
 	wx_disable_pcie_master(wx);
 	/* disable receives */
 	wx_disable_rx(wx);
 
+	/* disable all enabled rx queues */
+	for (i = 0; i < wx->num_rx_queues; i++)
+		/* this call also flushes the previous write */
+		wx_disable_rx_queue(wx, wx->rx_ring[i]);
+
+	netif_tx_stop_all_queues(netdev);
 	netif_carrier_off(netdev);
 	netif_tx_disable(netdev);
 
+	wx_irq_disable(wx);
+	wx_napi_disable_all(wx);
+
 	if (wx->bus.func < 2)
 		wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0);
 	else
@@ -116,6 +295,13 @@ static void txgbe_disable_device(struct wx *wx)
 		wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
 	}
 
+	/* disable transmits in the hardware now that interrupts are off */
+	for (i = 0; i < wx->num_tx_queues; i++) {
+		u8 reg_idx = wx->tx_ring[i]->reg_idx;
+
+		wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
+	}
+
 	/* Disable the Tx DMA engine */
 	wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
 }
@@ -124,6 +310,9 @@ static void txgbe_down(struct wx *wx)
 {
 	txgbe_disable_device(wx);
 	txgbe_reset(wx);
+
+	wx_clean_all_tx_rings(wx);
+	wx_clean_all_rx_rings(wx);
 }
 
 /**
@@ -132,12 +321,15 @@ static void txgbe_down(struct wx *wx)
  **/
 static int txgbe_sw_init(struct wx *wx)
 {
+	u16 msix_count = 0;
 	int err;
 
 	wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
 	wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
 	wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
 	wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
+	wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE;
+	wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ;
 
 	/* PCI config space info */
 	err = wx_sw_init(wx);
@@ -156,6 +348,25 @@ static int txgbe_sw_init(struct wx *wx)
 		break;
 	}
 
+	/* Set common capability flags and settings */
+	wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
+	err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS);
+	if (err)
+		wx_err(wx, "Do not support MSI-X\n");
+	wx->mac.max_msix_vectors = msix_count;
+
+	/* enable itr by default in dynamic mode */
+	wx->rx_itr_setting = 1;
+	wx->tx_itr_setting = 1;
+
+	/* set default ring sizes */
+	wx->tx_ring_count = TXGBE_DEFAULT_TXD;
+	wx->rx_ring_count = TXGBE_DEFAULT_RXD;
+
+	/* set default work limits */
+	wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
+	wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
+
 	return 0;
 }
 
@@ -171,10 +382,39 @@ static int txgbe_sw_init(struct wx *wx)
 static int txgbe_open(struct net_device *netdev)
 {
 	struct wx *wx = netdev_priv(netdev);
+	int err;
+
+	err = wx_setup_resources(wx);
+	if (err)
+		goto err_reset;
+
+	wx_configure(wx);
+
+	err = txgbe_request_irq(wx);
+	if (err)
+		goto err_free_isb;
+
+	/* Notify the stack of the actual queue counts. */
+	err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
+	if (err)
+		goto err_free_irq;
+
+	err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
+	if (err)
+		goto err_free_irq;
 
 	txgbe_up_complete(wx);
 
 	return 0;
+
+err_free_irq:
+	wx_free_irq(wx);
+err_free_isb:
+	wx_free_isb_resources(wx);
+err_reset:
+	txgbe_reset(wx);
+
+	return err;
 }
 
 /**
@@ -187,6 +427,7 @@ static int txgbe_open(struct net_device *netdev)
 static void txgbe_close_suspend(struct wx *wx)
 {
 	txgbe_disable_device(wx);
+	wx_free_resources(wx);
 }
 
 /**
@@ -205,6 +446,8 @@ static int txgbe_close(struct net_device *netdev)
 	struct wx *wx = netdev_priv(netdev);
 
 	txgbe_down(wx);
+	wx_free_irq(wx);
+	wx_free_resources(wx);
 	wx_control_hw(wx, false);
 
 	return 0;
@@ -240,18 +483,14 @@ static void txgbe_shutdown(struct pci_dev *pdev)
 	}
 }
 
-static netdev_tx_t txgbe_xmit_frame(struct sk_buff *skb,
-				    struct net_device *netdev)
-{
-	return NETDEV_TX_OK;
-}
-
 static const struct net_device_ops txgbe_netdev_ops = {
 	.ndo_open               = txgbe_open,
 	.ndo_stop               = txgbe_close,
-	.ndo_start_xmit         = txgbe_xmit_frame,
+	.ndo_start_xmit         = wx_xmit_frame,
+	.ndo_set_rx_mode        = wx_set_rx_mode,
 	.ndo_validate_addr      = eth_validate_addr,
 	.ndo_set_mac_address    = wx_set_mac,
+	.ndo_get_stats64        = wx_get_stats64,
 };
 
 /**
@@ -354,6 +593,16 @@ static int txgbe_probe(struct pci_dev *pdev,
 	}
 
 	netdev->features |= NETIF_F_HIGHDMA;
+	netdev->features = NETIF_F_SG;
+
+	/* copy netdev features into list of user selectable features */
+	netdev->hw_features |= netdev->features | NETIF_F_RXALL;
+
+	netdev->priv_flags |= IFF_UNICAST_FLT;
+	netdev->priv_flags |= IFF_SUPP_NOFCS;
+
+	netdev->min_mtu = ETH_MIN_MTU;
+	netdev->max_mtu = TXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN);
 
 	/* make sure the EEPROM is good */
 	err = txgbe_validate_eeprom_checksum(wx, NULL);
@@ -367,6 +616,10 @@ static int txgbe_probe(struct pci_dev *pdev,
 	eth_hw_addr_set(netdev, wx->mac.perm_addr);
 	wx_mac_set_default_filter(wx, wx->mac.perm_addr);
 
+	err = wx_init_interrupt_scheme(wx);
+	if (err)
+		goto err_free_mac_table;
+
 	/* Save off EEPROM version number and Option Rom version which
 	 * together make a unique identify for the eeprom
 	 */
@@ -411,6 +664,8 @@ static int txgbe_probe(struct pci_dev *pdev,
 
 	pci_set_drvdata(pdev, wx);
 
+	netif_tx_stop_all_queues(netdev);
+
 	/* calculate the expected PCIe bandwidth required for optimal
 	 * performance. Note that some older parts will never have enough
 	 * bandwidth due to being older generation PCIe parts. We clamp these
@@ -435,6 +690,7 @@ static int txgbe_probe(struct pci_dev *pdev,
 	return 0;
 
 err_release_hw:
+	wx_clear_interrupt_scheme(wx);
 	wx_control_hw(wx, false);
 err_free_mac_table:
 	kfree(wx->mac_table);
@@ -468,6 +724,7 @@ static void txgbe_remove(struct pci_dev *pdev)
 				     pci_select_bars(pdev, IORESOURCE_MEM));
 
 	kfree(wx->mac_table);
+	wx_clear_interrupt_scheme(wx);
 
 	pci_disable_pcie_error_reporting(pdev);
 

drivers/net/ethernet/wangxun/txgbe/txgbe_type.h

@@ -67,6 +67,7 @@
 #define TXGBE_PBANUM1_PTR                       0x06
 #define TXGBE_PBANUM_PTR_GUARD                  0xFAFA
 
+#define TXGBE_MAX_MSIX_VECTORS          64
 #define TXGBE_MAX_FDIR_INDICES          63
 
 #define TXGBE_MAX_RX_QUEUES   (TXGBE_MAX_FDIR_INDICES + 1)
@@ -76,6 +77,26 @@
 #define TXGBE_SP_MAX_RX_QUEUES  128
 #define TXGBE_SP_RAR_ENTRIES    128
 #define TXGBE_SP_MC_TBL_SIZE    128
+#define TXGBE_SP_RX_PB_SIZE     512
+#define TXGBE_SP_TDB_PB_SZ      (160 * 1024) /* 160KB Packet Buffer */
+#define TXGBE_MAX_JUMBO_FRAME_SIZE      9432 /* max payload 9414 */
+
+/* TX/RX descriptor defines */
+#define TXGBE_DEFAULT_TXD               512
+#define TXGBE_DEFAULT_TX_WORK           256
+
+#if (PAGE_SIZE < 8192)
+#define TXGBE_DEFAULT_RXD               512
+#define TXGBE_DEFAULT_RX_WORK           256
+#else
+#define TXGBE_DEFAULT_RXD               256
+#define TXGBE_DEFAULT_RX_WORK           128
+#endif
+
+#define TXGBE_INTR_MISC(A)    BIT((A)->num_q_vectors)
+#define TXGBE_INTR_QALL(A)    (TXGBE_INTR_MISC(A) - 1)
+
+#define TXGBE_MAX_EITR        GENMASK(11, 3)
 
 extern char txgbe_driver_name[];