usb: eth: add ASIX AX88179 DRIVER

This patch adds driver support for the ASIX AX88179 USB3.0 to GbE network
adapter.

Driver has been tested on the RECS5250 COM module (similar to ARDALE5250).
Testcase was DHCP and PXE boot.

Signed-off-by: Rene Griessl <rgriessl@cit-ec.uni-bielefeld.de>

3 files changed, 708 insertions, 0 deletions

diff --git a/drivers/usb/eth/Makefile b/drivers/usb/eth/Makefile
index e6ae9f1..c92d2b0 100644
--- a/drivers/usb/eth/Makefile
+++ b/drivers/usb/eth/Makefile
@@ -6,5 +6,6 @@
 # new USB host ethernet layer dependencies
 obj-$(CONFIG_USB_HOST_ETHER) += usb_ether.o
 obj-$(CONFIG_USB_ETHER_ASIX) += asix.o
+obj-$(CONFIG_USB_ETHER_ASIX88179) += asix88179.o
 obj-$(CONFIG_USB_ETHER_MCS7830) += mcs7830.o
 obj-$(CONFIG_USB_ETHER_SMSC95XX) += smsc95xx.o
diff --git a/drivers/usb/eth/asix88179.c b/drivers/usb/eth/asix88179.c
new file mode 100644
index 0000000..b8ca720
--- /dev/null
+++ b/drivers/usb/eth/asix88179.c
@@ -0,0 +1,700 @@
+/*
+ * Copyright (c) 2014 Rene Griessl <rgriessl@cit-ec.uni-bielefeld.de>
+ * based on the U-Boot Asix driver as well as information
+ * from the Linux AX88179_178a driver
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <net.h>
+#include <linux/mii.h>
+#include "usb_ether.h"
+#include <malloc.h>
+#include <errno.h>
+
+/* ASIX AX88179 based USB 3.0 Ethernet Devices */
+#define AX88179_PHY_ID				0x03
+#define AX_EEPROM_LEN				0x100
+#define AX88179_EEPROM_MAGIC			0x17900b95
+#define AX_MCAST_FLTSIZE			8
+#define AX_MAX_MCAST				64
+#define AX_INT_PPLS_LINK			(1 << 16)
+#define AX_RXHDR_L4_TYPE_MASK			0x1c
+#define AX_RXHDR_L4_TYPE_UDP			4
+#define AX_RXHDR_L4_TYPE_TCP			16
+#define AX_RXHDR_L3CSUM_ERR			2
+#define AX_RXHDR_L4CSUM_ERR			1
+#define AX_RXHDR_CRC_ERR			(1 << 29)
+#define AX_RXHDR_DROP_ERR			(1 << 31)
+#define AX_ENDPOINT_INT				0x01
+#define AX_ENDPOINT_IN				0x02
+#define AX_ENDPOINT_OUT				0x03
+#define AX_ACCESS_MAC				0x01
+#define AX_ACCESS_PHY				0x02
+#define AX_ACCESS_EEPROM			0x04
+#define AX_ACCESS_EFUS				0x05
+#define AX_PAUSE_WATERLVL_HIGH			0x54
+#define AX_PAUSE_WATERLVL_LOW			0x55
+
+#define PHYSICAL_LINK_STATUS			0x02
+	#define	AX_USB_SS		(1 << 2)
+	#define	AX_USB_HS		(1 << 1)
+
+#define GENERAL_STATUS				0x03
+	#define	AX_SECLD		(1 << 2)
+
+#define AX_SROM_ADDR				0x07
+#define AX_SROM_CMD				0x0a
+	#define EEP_RD			(1 << 2)
+	#define EEP_BUSY		(1 << 4)
+
+#define AX_SROM_DATA_LOW			0x08
+#define AX_SROM_DATA_HIGH			0x09
+
+#define AX_RX_CTL				0x0b
+	#define AX_RX_CTL_DROPCRCERR	(1 << 8)
+	#define AX_RX_CTL_IPE		(1 << 9)
+	#define AX_RX_CTL_START		(1 << 7)
+	#define AX_RX_CTL_AP		(1 << 5)
+	#define AX_RX_CTL_AM		(1 << 4)
+	#define AX_RX_CTL_AB		(1 << 3)
+	#define AX_RX_CTL_AMALL		(1 << 1)
+	#define AX_RX_CTL_PRO		(1 << 0)
+	#define AX_RX_CTL_STOP		0
+
+#define AX_NODE_ID				0x10
+#define AX_MULFLTARY				0x16
+
+#define AX_MEDIUM_STATUS_MODE			0x22
+	#define AX_MEDIUM_GIGAMODE	(1 << 0)
+	#define AX_MEDIUM_FULL_DUPLEX	(1 << 1)
+	#define AX_MEDIUM_EN_125MHZ	(1 << 3)
+	#define AX_MEDIUM_RXFLOW_CTRLEN	(1 << 4)
+	#define AX_MEDIUM_TXFLOW_CTRLEN	(1 << 5)
+	#define AX_MEDIUM_RECEIVE_EN	(1 << 8)
+	#define AX_MEDIUM_PS		(1 << 9)
+	#define AX_MEDIUM_JUMBO_EN	0x8040
+
+#define AX_MONITOR_MOD				0x24
+	#define AX_MONITOR_MODE_RWLC	(1 << 1)
+	#define AX_MONITOR_MODE_RWMP	(1 << 2)
+	#define AX_MONITOR_MODE_PMEPOL	(1 << 5)
+	#define AX_MONITOR_MODE_PMETYPE	(1 << 6)
+
+#define AX_GPIO_CTRL				0x25
+	#define AX_GPIO_CTRL_GPIO3EN	(1 << 7)
+	#define AX_GPIO_CTRL_GPIO2EN	(1 << 6)
+	#define AX_GPIO_CTRL_GPIO1EN	(1 << 5)
+
+#define AX_PHYPWR_RSTCTL			0x26
+	#define AX_PHYPWR_RSTCTL_BZ	(1 << 4)
+	#define AX_PHYPWR_RSTCTL_IPRL	(1 << 5)
+	#define AX_PHYPWR_RSTCTL_AT	(1 << 12)
+
+#define AX_RX_BULKIN_QCTRL			0x2e
+#define AX_CLK_SELECT				0x33
+	#define AX_CLK_SELECT_BCS	(1 << 0)
+	#define AX_CLK_SELECT_ACS	(1 << 1)
+	#define AX_CLK_SELECT_ULR	(1 << 3)
+
+#define AX_RXCOE_CTL				0x34
+	#define AX_RXCOE_IP		(1 << 0)
+	#define AX_RXCOE_TCP		(1 << 1)
+	#define AX_RXCOE_UDP		(1 << 2)
+	#define AX_RXCOE_TCPV6		(1 << 5)
+	#define AX_RXCOE_UDPV6		(1 << 6)
+
+#define AX_TXCOE_CTL				0x35
+	#define AX_TXCOE_IP		(1 << 0)
+	#define AX_TXCOE_TCP		(1 << 1)
+	#define AX_TXCOE_UDP		(1 << 2)
+	#define AX_TXCOE_TCPV6		(1 << 5)
+	#define AX_TXCOE_UDPV6		(1 << 6)
+
+#define AX_LEDCTRL				0x73
+
+#define GMII_PHY_PHYSR				0x11
+	#define GMII_PHY_PHYSR_SMASK	0xc000
+	#define GMII_PHY_PHYSR_GIGA	(1 << 15)
+	#define GMII_PHY_PHYSR_100	(1 << 14)
+	#define GMII_PHY_PHYSR_FULL	(1 << 13)
+	#define GMII_PHY_PHYSR_LINK	(1 << 10)
+
+#define GMII_LED_ACT				0x1a
+	#define	GMII_LED_ACTIVE_MASK	0xff8f
+	#define	GMII_LED0_ACTIVE	(1 << 4)
+	#define	GMII_LED1_ACTIVE	(1 << 5)
+	#define	GMII_LED2_ACTIVE	(1 << 6)
+
+#define GMII_LED_LINK				0x1c
+	#define	GMII_LED_LINK_MASK	0xf888
+	#define	GMII_LED0_LINK_10	(1 << 0)
+	#define	GMII_LED0_LINK_100	(1 << 1)
+	#define	GMII_LED0_LINK_1000	(1 << 2)
+	#define	GMII_LED1_LINK_10	(1 << 4)
+	#define	GMII_LED1_LINK_100	(1 << 5)
+	#define	GMII_LED1_LINK_1000	(1 << 6)
+	#define	GMII_LED2_LINK_10	(1 << 8)
+	#define	GMII_LED2_LINK_100	(1 << 9)
+	#define	GMII_LED2_LINK_1000	(1 << 10)
+	#define	LED0_ACTIVE		(1 << 0)
+	#define	LED0_LINK_10		(1 << 1)
+	#define	LED0_LINK_100		(1 << 2)
+	#define	LED0_LINK_1000		(1 << 3)
+	#define	LED0_FD			(1 << 4)
+	#define	LED0_USB3_MASK		0x001f
+	#define	LED1_ACTIVE		(1 << 5)
+	#define	LED1_LINK_10		(1 << 6)
+	#define	LED1_LINK_100		(1 << 7)
+	#define	LED1_LINK_1000		(1 << 8)
+	#define	LED1_FD			(1 << 9)
+	#define	LED1_USB3_MASK		0x03e0
+	#define	LED2_ACTIVE		(1 << 10)
+	#define	LED2_LINK_1000		(1 << 13)
+	#define	LED2_LINK_100		(1 << 12)
+	#define	LED2_LINK_10		(1 << 11)
+	#define	LED2_FD			(1 << 14)
+	#define	LED_VALID		(1 << 15)
+	#define	LED2_USB3_MASK		0x7c00
+
+#define GMII_PHYPAGE				0x1e
+#define GMII_PHY_PAGE_SELECT			0x1f
+	#define GMII_PHY_PGSEL_EXT	0x0007
+	#define GMII_PHY_PGSEL_PAGE0	0x0000
+
+/* local defines */
+#define ASIX_BASE_NAME "axg"
+#define USB_CTRL_SET_TIMEOUT 5000
+#define USB_CTRL_GET_TIMEOUT 5000
+#define USB_BULK_SEND_TIMEOUT 5000
+#define USB_BULK_RECV_TIMEOUT 5000
+
+#define AX_RX_URB_SIZE 1024 * 0x12
+#define BLK_FRAME_SIZE 0x200
+#define PHY_CONNECT_TIMEOUT 5000
+
+#define TIMEOUT_RESOLUTION 50	/* ms */
+
+#define FLAG_NONE			0
+#define FLAG_TYPE_AX88179	(1U << 0)
+#define FLAG_TYPE_AX88178a	(1U << 1)
+#define FLAG_TYPE_DLINK_DUB1312	(1U << 2)
+#define FLAG_TYPE_SITECOM	(1U << 3)
+#define FLAG_TYPE_SAMSUNG	(1U << 4)
+#define FLAG_TYPE_LENOVO	(1U << 5)
+
+/* local vars */
+static const struct {
+	unsigned char ctrl, timer_l, timer_h, size, ifg;
+} AX88179_BULKIN_SIZE[] =	{
+	{7, 0x4f, 0,	0x02, 0xff},
+	{7, 0x20, 3,	0x03, 0xff},
+	{7, 0xae, 7,	0x04, 0xff},
+	{7, 0xcc, 0x4c, 0x04, 8},
+};
+
+static int curr_eth_dev; /* index for name of next device detected */
+
+/* driver private */
+struct asix_private {
+	int flags;
+	int rx_urb_size;
+	int maxpacketsize;
+};
+
+/*
+ * Asix infrastructure commands
+ */
+static int asix_write_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
+			     u16 size, void *data)
+{
+	int len;
+	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, size);
+
+	debug("asix_write_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
+	      cmd, value, index, size);
+
+	memcpy(buf, data, size);
+
+	len = usb_control_msg(
+		dev->pusb_dev,
+		usb_sndctrlpipe(dev->pusb_dev, 0),
+		cmd,
+		USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		buf,
+		size,
+		USB_CTRL_SET_TIMEOUT);
+
+	return len == size ? 0 : ECOMM;
+}
+
+static int asix_read_cmd(struct ueth_data *dev, u8 cmd, u16 value, u16 index,
+			    u16 size, void *data)
+{
+	int len;
+	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buf, size);
+
+	debug("asix_read_cmd() cmd=0x%02x value=0x%04x index=0x%04x size=%d\n",
+	      cmd, value, index, size);
+
+	len = usb_control_msg(
+		dev->pusb_dev,
+		usb_rcvctrlpipe(dev->pusb_dev, 0),
+		cmd,
+		USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		value,
+		index,
+		buf,
+		size,
+		USB_CTRL_GET_TIMEOUT);
+
+	memcpy(data, buf, size);
+
+	return len == size ? 0 : ECOMM;
+}
+
+static int asix_read_mac(struct eth_device *eth)
+{
+	struct ueth_data *dev = (struct ueth_data *)eth->priv;
+	u8 buf[ETH_ALEN];
+
+	asix_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, 6, 6, buf);
+	debug("asix_read_mac() returning %02x:%02x:%02x:%02x:%02x:%02x\n",
+	      buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
+
+	memcpy(eth->enetaddr, buf, ETH_ALEN);
+
+	return 0;
+}
+
+static int asix_basic_reset(struct ueth_data *dev)
+{
+	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;
+	u8 buf[5];
+	u16 *tmp16;
+	u8 *tmp;
+
+	tmp16 = (u16 *)buf;
+	tmp = (u8 *)buf;
+
+	/* Power up ethernet PHY */
+	*tmp16 = 0;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+
+	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+	mdelay(200);
+
+	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
+	mdelay(200);
+
+	/* RX bulk configuration */
+	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
+
+	dev_priv->rx_urb_size = 128 * 20;
+
+	/* Water Level configuration */
+	*tmp = 0x34;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
+
+	*tmp = 0x52;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH, 1, 1, tmp);
+
+	/* Enable checksum offload */
+	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
+	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);
+
+	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
+	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);
+
+	/* Configure RX control register => start operation */
+	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
+		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);
+
+	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
+	       AX_MONITOR_MODE_RWMP;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);
+
+	/* Configure default medium type => giga */
+	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
+		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
+		 AX_MEDIUM_GIGAMODE | AX_MEDIUM_JUMBO_EN;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, 2, 2, tmp16);
+
+	u16 adv = 0;
+	adv = ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_LPACK |
+	      ADVERTISE_NPAGE | ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP;
+	asix_write_cmd(dev, AX_ACCESS_PHY, 0x03, MII_ADVERTISE, 2, &adv);
+
+	adv = ADVERTISE_1000FULL;
+	asix_write_cmd(dev, AX_ACCESS_PHY, 0x03, MII_CTRL1000, 2, &adv);
+
+	return 0;
+}
+
+static int asix_wait_link(struct ueth_data *dev)
+{
+	int timeout = 0;
+	int link_detected;
+	u8 buf[2];
+	u16 *tmp16;
+
+	tmp16 = (u16 *)buf;
+
+	do {
+		asix_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+			      MII_BMSR, 2, buf);
+		link_detected = *tmp16 & BMSR_LSTATUS;
+		if (!link_detected) {
+			if (timeout == 0)
+				printf("Waiting for Ethernet connection... ");
+			mdelay(TIMEOUT_RESOLUTION);
+			timeout += TIMEOUT_RESOLUTION;
+		}
+	} while (!link_detected && timeout < PHY_CONNECT_TIMEOUT);
+
+	if (link_detected) {
+		if (timeout > 0)
+			printf("done.\n");
+		return 0;
+	} else {
+		printf("unable to connect.\n");
+		return -ENETUNREACH;
+	}
+}
+
+/*
+ * Asix callbacks
+ */
+static int asix_init(struct eth_device *eth, bd_t *bd)
+{
+	struct ueth_data *dev = (struct ueth_data *)eth->priv;
+	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;
+	u8 buf[2], tmp[5], link_sts;
+	u16 *tmp16, mode;
+
+
+	tmp16 = (u16 *)buf;
+
+	debug("** %s()\n", __func__);
+
+	/* Configure RX control register => start operation */
+	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
+		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
+	if (asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16) != 0)
+		goto out_err;
+
+	if (asix_wait_link(dev) != 0) {
+		/*reset device and try again*/
+		printf("Reset Ethernet Device\n");
+		asix_basic_reset(dev);
+		if (asix_wait_link(dev) != 0)
+			goto out_err;
+	}
+
+	/* Configure link */
+	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
+	       AX_MEDIUM_RXFLOW_CTRLEN;
+
+	asix_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
+		      1, 1, &link_sts);
+
+	asix_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+		      GMII_PHY_PHYSR, 2, tmp16);
+
+	if (!(*tmp16 & GMII_PHY_PHYSR_LINK)) {
+		return 0;
+	} else if (GMII_PHY_PHYSR_GIGA == (*tmp16 & GMII_PHY_PHYSR_SMASK)) {
+		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ |
+			AX_MEDIUM_JUMBO_EN;
+
+		if (link_sts & AX_USB_SS)
+			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
+		else if (link_sts & AX_USB_HS)
+			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
+		else
+			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
+	} else if (GMII_PHY_PHYSR_100 == (*tmp16 & GMII_PHY_PHYSR_SMASK)) {
+		mode |= AX_MEDIUM_PS;
+
+		if (link_sts & (AX_USB_SS | AX_USB_HS))
+			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
+		else
+			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
+	} else {
+		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
+	}
+
+	/* RX bulk configuration */
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
+
+	dev_priv->rx_urb_size = (1024 * (tmp[3] + 2));
+	if (*tmp16 & GMII_PHY_PHYSR_FULL)
+		mode |= AX_MEDIUM_FULL_DUPLEX;
+	asix_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+		       2, 2, &mode);
+
+	return 0;
+out_err:
+	return -1;
+}
+
+static int asix_send(struct eth_device *eth, void *packet, int length)
+{
+	struct ueth_data *dev = (struct ueth_data *)eth->priv;
+	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;
+
+	int err;
+	u32 packet_len, tx_hdr2;
+	int actual_len, framesize;
+	ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg,
+				 PKTSIZE + (2 * sizeof(packet_len)));
+
+	debug("** %s(), len %d\n", __func__, length);
+
+	packet_len = length;
+	cpu_to_le32s(&packet_len);
+
+	memcpy(msg, &packet_len, sizeof(packet_len));
+	framesize = dev_priv->maxpacketsize;
+	tx_hdr2 = 0;
+	if (((length + 8) % framesize) == 0)
+		tx_hdr2 |= 0x80008000;	/* Enable padding */
+
+	cpu_to_le32s(&tx_hdr2);
+
+	memcpy(msg + sizeof(packet_len), &tx_hdr2, sizeof(tx_hdr2));
+
+	memcpy(msg + sizeof(packet_len) + sizeof(tx_hdr2),
+	       (void *)packet, length);
+
+	err = usb_bulk_msg(dev->pusb_dev,
+				usb_sndbulkpipe(dev->pusb_dev, dev->ep_out),
+				(void *)msg,
+				length + sizeof(packet_len) + sizeof(tx_hdr2),
+				&actual_len,
+				USB_BULK_SEND_TIMEOUT);
+	debug("Tx: len = %u, actual = %u, err = %d\n",
+	      length + sizeof(packet_len), actual_len, err);
+
+	return err;
+}
+
+static int asix_recv(struct eth_device *eth)
+{
+	struct ueth_data *dev = (struct ueth_data *)eth->priv;
+	struct asix_private *dev_priv = (struct asix_private *)dev->dev_priv;
+
+	u16 frame_pos;
+	int err;
+	int actual_len;
+
+	int pkt_cnt;
+	u32 rx_hdr;
+	u16 hdr_off;
+	u32 *pkt_hdr;
+	ALLOC_CACHE_ALIGN_BUFFER(u8, recv_buf, dev_priv->rx_urb_size);
+
+	actual_len = -1;
+
+	debug("** %s()\n", __func__);
+
+	err = usb_bulk_msg(dev->pusb_dev,
+				usb_rcvbulkpipe(dev->pusb_dev, dev->ep_in),
+				(void *)recv_buf,
+				dev_priv->rx_urb_size,
+				&actual_len,
+				USB_BULK_RECV_TIMEOUT);
+	debug("Rx: len = %u, actual = %u, err = %d\n", dev_priv->rx_urb_size,
+	      actual_len, err);
+
+	if (err != 0) {
+		debug("Rx: failed to receive\n");
+		return -ECOMM;
+	}
+	if (actual_len > dev_priv->rx_urb_size) {
+		debug("Rx: received too many bytes %d\n", actual_len);
+		return -EMSGSIZE;
+	}
+
+
+	rx_hdr = *(u32 *)(recv_buf + actual_len - 4);
+	le32_to_cpus(&pkt_hdr);
+
+	pkt_cnt = (u16)rx_hdr;
+	hdr_off = (u16)(rx_hdr >> 16);
+	pkt_hdr = (u32 *)(recv_buf + hdr_off);
+
+
+	frame_pos = 0;
+
+	while (pkt_cnt--) {
+		u16 pkt_len;
+
+		le32_to_cpus(pkt_hdr);
+		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
+
+		frame_pos += 2;
+
+		NetReceive(recv_buf + frame_pos, pkt_len);
+
+		pkt_hdr++;
+		frame_pos += ((pkt_len + 7) & 0xFFF8)-2;
+
+		if (pkt_cnt == 0)
+			return 0;
+	}
+	return err;
+}
+
+static void asix_halt(struct eth_device *eth)
+{
+	debug("** %s()\n", __func__);
+}
+
+/*
+ * Asix probing functions
+ */
+void ax88179_eth_before_probe(void)
+{
+	curr_eth_dev = 0;
+}
+
+struct asix_dongle {
+	unsigned short vendor;
+	unsigned short product;
+	int flags;
+};
+
+static const struct asix_dongle asix_dongles[] = {
+	{ 0x0b95, 0x1790, FLAG_TYPE_AX88179 },
+	{ 0x0b95, 0x178a, FLAG_TYPE_AX88178a },
+	{ 0x2001, 0x4a00, FLAG_TYPE_DLINK_DUB1312 },
+	{ 0x0df6, 0x0072, FLAG_TYPE_SITECOM },
+	{ 0x04e8, 0xa100, FLAG_TYPE_SAMSUNG },
+	{ 0x17ef, 0x304b, FLAG_TYPE_LENOVO },
+	{ 0x0000, 0x0000, FLAG_NONE }	/* END - Do not remove */
+};
+
+/* Probe to see if a new device is actually an asix device */
+int ax88179_eth_probe(struct usb_device *dev, unsigned int ifnum,
+		      struct ueth_data *ss)
+{
+	struct usb_interface *iface;
+	struct usb_interface_descriptor *iface_desc;
+	struct asix_private *dev_priv;
+	int ep_in_found = 0, ep_out_found = 0;
+	int i;
+
+	/* let's examine the device now */
+	iface = &dev->config.if_desc[ifnum];
+	iface_desc = &dev->config.if_desc[ifnum].desc;
+
+	for (i = 0; asix_dongles[i].vendor != 0; i++) {
+		if (dev->descriptor.idVendor == asix_dongles[i].vendor &&
+		    dev->descriptor.idProduct == asix_dongles[i].product)
+			/* Found a supported dongle */
+			break;
+	}
+
+	if (asix_dongles[i].vendor == 0)
+		return 0;
+
+	memset(ss, 0, sizeof(struct ueth_data));
+
+	/* At this point, we know we've got a live one */
+	debug("\n\nUSB Ethernet device detected: %#04x:%#04x\n",
+	      dev->descriptor.idVendor, dev->descriptor.idProduct);
+
+	/* Initialize the ueth_data structure with some useful info */
+	ss->ifnum = ifnum;
+	ss->pusb_dev = dev;
+	ss->subclass = iface_desc->bInterfaceSubClass;
+	ss->protocol = iface_desc->bInterfaceProtocol;
+
+	/* alloc driver private */
+	ss->dev_priv = calloc(1, sizeof(struct asix_private));
+	if (!ss->dev_priv)
+		return 0;
+	dev_priv = ss->dev_priv;
+	dev_priv->flags = asix_dongles[i].flags;
+
+	/*
+	 * We are expecting a minimum of 3 endpoints - in, out (bulk), and
+	 * int. We will ignore any others.
+	 */
+	for (i = 0; i < iface_desc->bNumEndpoints; i++) {
+		/* is it an interrupt endpoint? */
+		if ((iface->ep_desc[i].bmAttributes &
+		    USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
+			ss->ep_int = iface->ep_desc[i].bEndpointAddress &
+				USB_ENDPOINT_NUMBER_MASK;
+			ss->irqinterval = iface->ep_desc[i].bInterval;
+			continue;
+		}
+
+		/* is it an BULK endpoint? */
+		if (!((iface->ep_desc[i].bmAttributes &
+		     USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK))
+			continue;
+
+		u8 ep_addr = iface->ep_desc[i].bEndpointAddress;
+		if ((ep_addr & USB_DIR_IN) && !ep_in_found) {
+			ss->ep_in = ep_addr &
+				USB_ENDPOINT_NUMBER_MASK;
+			ep_in_found = 1;
+		}
+		if (!(ep_addr & USB_DIR_IN) && !ep_out_found) {
+			ss->ep_out = ep_addr &
+				USB_ENDPOINT_NUMBER_MASK;
+			dev_priv->maxpacketsize =
+				dev->epmaxpacketout[AX_ENDPOINT_OUT];
+			ep_out_found = 1;
+		}
+	}
+	debug("Endpoints In %d Out %d Int %d\n",
+	      ss->ep_in, ss->ep_out, ss->ep_int);
+
+	/* Do some basic sanity checks, and bail if we find a problem */
+	if (usb_set_interface(dev, iface_desc->bInterfaceNumber, 0) ||
+	    !ss->ep_in || !ss->ep_out || !ss->ep_int) {
+		debug("Problems with device\n");
+		return 0;
+	}
+	dev->privptr = (void *)ss;
+	return 1;
+}
+
+int ax88179_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
+				struct eth_device *eth)
+{
+	if (!eth) {
+		debug("%s: missing parameter.\n", __func__);
+		return 0;
+	}
+	sprintf(eth->name, "%s%d", ASIX_BASE_NAME, curr_eth_dev++);
+	eth->init = asix_init;
+	eth->send = asix_send;
+	eth->recv = asix_recv;
+	eth->halt = asix_halt;
+	eth->priv = ss;
+
+	if (asix_basic_reset(ss))
+		return 0;
+
+	/* Get the MAC address */
+	if (asix_read_mac(eth))
+		return 0;
+	debug("MAC %pM\n", eth->enetaddr);
+
+	return 1;
+}
diff --git a/drivers/usb/eth/usb_ether.c b/drivers/usb/eth/usb_ether.c
index 1dda54c..7cb96e3 100644
--- a/drivers/usb/eth/usb_ether.c
+++ b/drivers/usb/eth/usb_ether.c
@@ -30,6 +30,13 @@ static const struct usb_eth_prob_dev prob_dev[] = {
 		.get_info = asix_eth_get_info,
 	},
 #endif
+#ifdef CONFIG_USB_ETHER_ASIX88179
+	{
+		.before_probe = ax88179_eth_before_probe,
+		.probe = ax88179_eth_probe,
+		.get_info = ax88179_eth_get_info,
+	},
+#endif
 #ifdef CONFIG_USB_ETHER_MCS7830
 	{
 		.before_probe = mcs7830_eth_before_probe,