[PATCH, resubmit] ax88179_178a: ASIX AX88179_178A USB 3.0/2.0 to gigabit ethernet adapter driver

* [PATCH, resubmit] ax88179_178a: ASIX AX88179_178A USB 3.0/2.0 to gigabit ethernet adapter driver
@ 2013-02-07 13:39 Freddy Xin
  2013-02-07 20:02 ` Ben Hutchings
  0 siblings, 1 reply; 27+ messages in thread
From: Freddy Xin @ 2013-02-07 13:39 UTC (permalink / raw)
  To: netdev; +Cc: davem, linux-usb, linux-kernel, Freddy Xin

From: Freddy Xin <freddy@asix.com.tw>

This is a resubmission.
Added "const" to ethtool_ops structure and fixed the coding style of AX88179_BULKIN_SIZE array.
Fixed the issue that the default MTU is not 1500.
Added ax88179_change_mtu function and enabled the hardware jumbo frame function to support an
MTU higher than 1500.
Fixed indentation and empty line coding style errors.
The _nopm version usb functions were added to access register in suspend and resume functions.
Serveral variables allocted dynamically were removed and replaced by stack variables.
ax88179_get_eeprom were modified from asix_get_eeprom in asix_common.

This patch adds a driver for ASIX's AX88179 family of USB 3.0/2.0
to gigabit ethernet adapters. It's based on the AX88xxx driver but
the usb commands used to access registers for AX88179 are completely different.
This driver had been verified on x86 system with AX88179/AX88178A and
Sitcomm LN-032 USB dongles.

Signed-off-by: Freddy Xin <freddy@asix.com.tw>
---
 drivers/net/usb/Kconfig        |   18 +
 drivers/net/usb/Makefile       |    1 +
 drivers/net/usb/ax88179_178a.c | 1399 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 1418 insertions(+)
 create mode 100644 drivers/net/usb/ax88179_178a.c

diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index ef97621..75af401 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -158,6 +158,24 @@ config USB_NET_AX8817X
 	  This driver creates an interface named "ethX", where X depends on
 	  what other networking devices you have in use.
 
+config USB_NET_AX88179_178A
+	tristate "ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet"
+	depends on USB_USBNET
+	select CRC32
+	select PHYLIB
+	default y
+	help
+	  This option adds support for ASIX AX88179 based USB 3.0/2.0
+	  to Gigabit Ethernet adapters.
+
+ 	  This driver should work with at least the following devices:
+	    * ASIX AX88179
+	    * ASIX AX88178A
+	    * Sitcomm LN-032
+
+	  This driver creates an interface named "ethX", where X depends on
+	  what other networking devices you have in use.
+
 config USB_NET_CDCETHER
 	tristate "CDC Ethernet support (smart devices such as cable modems)"
 	depends on USB_USBNET
diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile
index 4786913..119b06c 100644
--- a/drivers/net/usb/Makefile
+++ b/drivers/net/usb/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_USB_RTL8150)	+= rtl8150.o
 obj-$(CONFIG_USB_HSO)		+= hso.o
 obj-$(CONFIG_USB_NET_AX8817X)	+= asix.o
 asix-y := asix_devices.o asix_common.o ax88172a.o
+obj-$(CONFIG_USB_NET_AX88179_178A)      += ax88179_178a.o
 obj-$(CONFIG_USB_NET_CDCETHER)	+= cdc_ether.o
 obj-$(CONFIG_USB_NET_CDC_EEM)	+= cdc_eem.o
 obj-$(CONFIG_USB_NET_DM9601)	+= dm9601.o
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
new file mode 100644
index 0000000..545151a
--- /dev/null
+++ b/drivers/net/usb/ax88179_178a.c
@@ -0,0 +1,1399 @@
+/*
+ * ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet Devices
+ *
+ * Copyright (C) 2011-2013 ASIX
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/crc32.h>
+#include <linux/usb/usbnet.h>
+
+#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			BIT(0)
+#define AX_RXHDR_L4_TYPE_UDP			1
+#define AX_RXHDR_L4_TYPE_TCP			4
+#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		0x04
+	#define	AX_USB_HS		0x02
+
+#define GENERAL_STATUS				0x03
+/* Check AX88179 version. UA1:Bit2 = 0,  UA2:Bit2 = 1 */
+	#define	AX_SECLD		0x04
+
+#define AX_SROM_ADDR				0x07
+#define AX_SROM_CMD				0x0a
+	#define EEP_RD			0x04
+	#define EEP_BUSY		0x10
+
+#define AX_SROM_DATA_LOW			0x08
+#define AX_SROM_DATA_HIGH			0x09
+
+#define AX_RX_CTL				0x0b
+	#define AX_RX_CTL_DROPCRCERR	0x0100
+	#define AX_RX_CTL_IPE		0x0200
+	#define AX_RX_CTL_START		0x0080
+	#define AX_RX_CTL_AP		0x0020
+	#define AX_RX_CTL_AM		0x0010
+	#define AX_RX_CTL_AB		0x0008
+	#define AX_RX_CTL_AMALL		0x0002
+	#define AX_RX_CTL_PRO		0x0001
+	#define AX_RX_CTL_STOP		0x0000
+
+#define AX_NODE_ID				0x10
+#define AX_MULFLTARY				0x16
+
+#define AX_MEDIUM_STATUS_MODE			0x22
+	#define AX_MEDIUM_GIGAMODE	0x01
+	#define AX_MEDIUM_FULL_DUPLEX	0x02
+	#define AX_MEDIUM_ALWAYS_ONE	0x04
+	#define AX_MEDIUM_EN_125MHZ	0x08
+	#define AX_MEDIUM_RXFLOW_CTRLEN	0x10
+	#define AX_MEDIUM_TXFLOW_CTRLEN	0x20
+	#define AX_MEDIUM_RECEIVE_EN	0x100
+	#define AX_MEDIUM_PS		0x200
+	#define AX_MEDIUM_JUMBO_EN	0x8040
+
+#define AX_MONITOR_MOD				0x24
+	#define AX_MONITOR_MODE_RWLC	0x02
+	#define AX_MONITOR_MODE_RWMP	0x04
+	#define AX_MONITOR_MODE_PMEPOL	0x20
+	#define AX_MONITOR_MODE_PMETYPE	0x40
+
+#define AX_GPIO_CTRL				0x25
+	#define AX_GPIO_CTRL_GPIO3EN	0x80
+	#define AX_GPIO_CTRL_GPIO2EN	0x40
+	#define AX_GPIO_CTRL_GPIO1EN	0x20
+
+#define AX_PHYPWR_RSTCTL			0x26
+	#define AX_PHYPWR_RSTCTL_BZ	0x0010
+	#define AX_PHYPWR_RSTCTL_IPRL	0x0020
+	#define AX_PHYPWR_RSTCTL_AT	0x1000
+
+#define AX_RX_BULKIN_QCTRL			0x2e
+#define AX_CLK_SELECT				0x33
+	#define AX_CLK_SELECT_BCS	0x01
+	#define AX_CLK_SELECT_ACS	0x02
+	#define AX_CLK_SELECT_ULR	0x08
+
+#define AX_RXCOE_CTL				0x34
+	#define AX_RXCOE_IP		0x01
+	#define AX_RXCOE_TCP		0x02
+	#define AX_RXCOE_UDP		0x04
+	#define AX_RXCOE_TCPV6		0x20
+	#define AX_RXCOE_UDPV6		0x40
+
+#define AX_TXCOE_CTL				0x35
+	#define AX_TXCOE_IP		0x01
+	#define AX_TXCOE_TCP		0x02
+	#define AX_TXCOE_UDP		0x04
+	#define AX_TXCOE_TCPV6		0x20
+	#define AX_TXCOE_UDPV6		0x40
+
+#define AX_LEDCTRL				0x73
+
+#define GMII_PHY_PHYSR				0x11
+	#define GMII_PHY_PHYSR_SMASK	0xc000
+	#define GMII_PHY_PHYSR_GIGA	0x8000
+	#define GMII_PHY_PHYSR_100	0x4000
+	#define GMII_PHY_PHYSR_FULL	0x2000
+	#define GMII_PHY_PHYSR_LINK	0x400
+
+#define GMII_LED_ACT				0x1a
+	#define GMII_LED_ACTIVE_MASK	0xff8fd
+	#define GMII_LED0_ACTIVE	BIT(4)
+	#define GMII_LED1_ACTIVE	BIT(5)
+	#define GMII_LED2_ACTIVE	BIT(6)
+
+#define GMII_LED_LINK				0x1c
+	#define GMII_LED_LINK_MASK	0xf888
+	#define GMII_LED0_LINK_10	BIT(0)
+	#define GMII_LED0_LINK_100	BIT(1)
+	#define GMII_LED0_LINK_1000	BIT(2)
+	#define GMII_LED1_LINK_10	BIT(4)
+	#define GMII_LED1_LINK_100	BIT(5)
+	#define GMII_LED1_LINK_1000	BIT(6)
+	#define GMII_LED2_LINK_10	BIT(8)
+	#define GMII_LED2_LINK_100	BIT(9)
+	#define GMII_LED2_LINK_1000	BIT(10)
+	#define	LED0_ACTIVE		BIT(0)
+	#define	LED0_LINK_10		BIT(1)
+	#define	LED0_LINK_100		BIT(2)
+	#define	LED0_LINK_1000		BIT(3)
+	#define	LED0_FD			BIT(4)
+	#define LED0_USB3_MASK		0x001f
+	#define	LED1_ACTIVE		BIT(5)
+	#define	LED1_LINK_10		BIT(6)
+	#define	LED1_LINK_100		BIT(7)
+	#define	LED1_LINK_1000		BIT(8)
+	#define	LED1_FD			BIT(9)
+	#define LED1_USB3_MASK		0x03e0
+	#define	LED2_ACTIVE		BIT(10)
+	#define	LED2_LINK_1000		BIT(13)
+	#define	LED2_LINK_100		BIT(12)
+	#define	LED2_LINK_10		BIT(11)
+	#define	LED2_FD			BIT(14)
+	#define	LED_VALID		BIT(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
+
+struct ax88179_data {
+	u16 rxctl;
+};
+
+struct ax88179_int_data {
+	u16 res1;
+	u8 link;
+	u16 res2;
+	u8 status;
+	u16 res3;
+} __packed;
+
+static const struct {
+	unsigned char ctrl, timer_l, timer_h, size, ifg;
+} AX88179_BULKIN_SIZE[] =	{
+	{7, 0x4f, 0,	0x12, 0xff},
+	{7, 0xf0, 1,	0x15, 0xff},
+	{7, 0xae, 7,	0x18, 0xff},
+	{7, 0xcc, 0x4c, 0x18, 8},
+};
+
+struct ax88179_rx_pkt_header {
+	u8	l4_csum_err:1,
+		l3_csum_err:1,
+		l4_type:3,
+		l3_type:2,
+		ce:1;
+
+	u8	vlan_ind:3,
+		rx_ok:1,
+		pri:3,
+		bmc:1;
+
+	u16	len:13,
+		crc:1,
+		mii:1,
+		drop:1;
+} __packed;
+
+static int __ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			      u16 size, void *data, int in_pm)
+{
+	int ret;
+	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
+
+	BUG_ON(!dev);
+
+	if (!in_pm)
+		fn = usbnet_read_cmd;
+	else
+		fn = usbnet_read_cmd_nopm;
+
+	ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		 value, index, data, size);
+	if (unlikely(ret < 0))
+		netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
+			    index, ret);
+
+	return ret;
+}
+
+static int __ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			       u16 size, void *data, int in_pm)
+{
+	int ret;
+	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
+
+	BUG_ON(!dev);
+
+	if (!in_pm)
+		fn = usbnet_write_cmd;
+	else
+		fn = usbnet_write_cmd_nopm;
+
+	ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		 value, index, data, size);
+	if (unlikely(ret < 0))
+		netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
+			    index, ret);
+
+	return ret;
+}
+
+static void ax88179_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
+				    u16 index, u16 size, void *data)
+{
+	usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
+			       USB_RECIP_DEVICE, value, index, data, size);
+}
+
+static int ax88179_read_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
+				 u16 index, u16 size, void *data)
+{
+	return __ax88179_read_cmd(dev, cmd, value, index, size, data, 1);
+}
+
+static int ax88179_write_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value,
+				  u16 index, u16 size, void *data)
+{
+	return __ax88179_write_cmd(dev, cmd, value, index, size, data, 1);
+}
+
+static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			    u16 size, void *data)
+{
+	return __ax88179_read_cmd(dev, cmd, value, index, size, data, 0);
+}
+
+static int ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
+			     u16 size, void *data)
+{
+	return __ax88179_write_cmd(dev, cmd, value, index, size, data, 0);
+}
+
+static void ax88179_status(struct usbnet *dev, struct urb *urb)
+{
+	struct ax88179_int_data *event;
+	int link;
+
+	if (urb->actual_length < 8)
+		return;
+
+	event = urb->transfer_buffer;
+	link = event->link & AX_INT_PPLS_LINK;
+	if (netif_carrier_ok(dev->net) != link) {
+		if (link)
+			usbnet_defer_kevent(dev, EVENT_LINK_RESET);
+		else
+			netif_carrier_off(dev->net);
+		netdev_info(dev->net, "ax88179 - Link status is: %d\n", link);
+	}
+}
+
+static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	__u16 res;
+
+	ax88179_read_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
+	return le16_to_cpu(res & 0xffff);
+}
+
+static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc,
+			       int val)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	__le16 res;
+
+	res = cpu_to_le16(val);
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
+}
+
+static int ax88179_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	u16 tmp16;
+
+	usbnet_suspend(intf, message);
+
+	/* Disable RX path */
+	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			      2, 2, &tmp16);
+	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			       2, 2, &tmp16);
+
+	/* Force bulk-in zero length */
+	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			      2, 2, &tmp16);
+
+	tmp16 |= AX_PHYPWR_RSTCTL_BZ | AX_PHYPWR_RSTCTL_IPRL;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			       2, 2, &tmp16);
+
+	/* change clock */
+	tmp16 = 0;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);
+
+	/* Configure RX control register => stop operation */
+	tmp16 = AX_RX_CTL_STOP;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
+
+	return 0;
+}
+
+/* This function is used to enable the autodetach function. */
+/* This function is determined by offset 0x43 of EEPROM */
+static int ax88179_auto_detach(struct usbnet *dev, int in_pm)
+{
+	u16 tmp;
+
+	if (__ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x43, 1, 2,
+			       &tmp, in_pm) < 0)
+		return 0;
+
+	if ((tmp == 0xFFFF) || (!(tmp & 0x0100)))
+		return 0;
+
+	/* Enable Auto Detach bit */
+	tmp = 0;
+	__ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT,
+			   1, 1, &tmp, in_pm);
+	tmp |= AX_CLK_SELECT_ULR;
+	__ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT,
+			    1, 1, &tmp, in_pm);
+
+	__ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			   2, 2, &tmp, in_pm);
+	tmp |= AX_PHYPWR_RSTCTL_AT;
+	__ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			    2, 2, &tmp, in_pm);
+
+	return 0;
+}
+
+static int ax88179_resume(struct usb_interface *intf)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	u16 tmp16;
+
+	netif_carrier_off(dev->net);
+
+	/* Power up ethernet PHY */
+	tmp16 = 0;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			       2, 2, &tmp16);
+	udelay(1000);
+
+	tmp16 = AX_PHYPWR_RSTCTL_IPRL;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
+			       2, 2, &tmp16);
+	msleep(200);
+
+	/* Ethernet PHY Auto Detach*/
+	ax88179_auto_detach(dev, 1);
+
+	/* enable clock */
+	ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC,  AX_CLK_SELECT, 1, 1, &tmp16);
+	tmp16 |= AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);
+	msleep(100);
+
+	/* 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;
+	ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
+
+	return usbnet_resume(intf);
+}
+
+static void
+ax88179_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt;
+
+	if (ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
+			     1, 1, &opt) < 0) {
+		wolinfo->supported = 0;
+		wolinfo->wolopts = 0;
+		return;
+	}
+
+	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
+	wolinfo->wolopts = 0;
+	if (opt & AX_MONITOR_MODE_RWLC)
+		wolinfo->wolopts |= WAKE_PHY;
+	if (opt & AX_MONITOR_MODE_RWMP)
+		wolinfo->wolopts |= WAKE_MAGIC;
+}
+
+static int
+ax88179_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u8 opt = 0;
+
+	if (wolinfo->wolopts & WAKE_PHY)
+		opt |= AX_MONITOR_MODE_RWLC;
+	if (wolinfo->wolopts & WAKE_MAGIC)
+		opt |= AX_MONITOR_MODE_RWMP;
+
+	if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
+			      1, 1, &opt) < 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ax88179_get_eeprom_len(struct net_device *net)
+{
+	return AX_EEPROM_LEN;
+}
+
+static int
+ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
+		   u8 *data)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 *eeprom_buff;
+	int first_word, last_word;
+	int i;
+
+	if (eeprom->len == 0)
+		return -EINVAL;
+
+	eeprom->magic = AX88179_EEPROM_MAGIC;
+
+	first_word = eeprom->offset >> 1;
+	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
+	eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
+			      GFP_KERNEL);
+	if (!eeprom_buff)
+		return -ENOMEM;
+
+	/* ax88179/178A returns 2 bytes from eeprom on read */
+	for (i = first_word; i <= last_word; i++) {
+		if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
+				     &(eeprom_buff[i - first_word])) < 0) {
+			kfree(eeprom_buff);
+			return -EIO;
+		}
+	}
+
+	memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
+	kfree(eeprom_buff);
+	return 0;
+}
+
+static int ax88179_get_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+	return mii_ethtool_gset(&dev->mii, cmd);
+}
+
+static int ax88179_set_settings(struct net_device *net, struct ethtool_cmd *cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+	return mii_ethtool_sset(&dev->mii, cmd);
+}
+
+
+static int ax88179_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
+}
+
+static const struct ethtool_ops ax88179_ethtool_ops = {
+	.get_link		= ethtool_op_get_link,
+	.get_msglevel		= usbnet_get_msglevel,
+	.set_msglevel		= usbnet_set_msglevel,
+	.get_wol		= ax88179_get_wol,
+	.set_wol		= ax88179_set_wol,
+	.get_eeprom_len		= ax88179_get_eeprom_len,
+	.get_eeprom		= ax88179_get_eeprom,
+	.get_settings		= ax88179_get_settings,
+	.set_settings		= ax88179_set_settings,
+	.nway_reset		= usbnet_nway_reset,
+};
+
+static void ax88179_set_multicast(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct ax88179_data *data = (struct ax88179_data *)dev->data;
+	u8 *m_filter = ((u8 *)dev->data) + 12;
+
+	data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE);
+
+	if (net->flags & IFF_PROMISC) {
+		data->rxctl |= AX_RX_CTL_PRO;
+	} else if (net->flags & IFF_ALLMULTI ||
+		   netdev_mc_count(net) > AX_MAX_MCAST) {
+		data->rxctl |= AX_RX_CTL_AMALL;
+	} else if (netdev_mc_empty(net)) {
+		/* just broadcast and directed */
+	} else {
+		/* We use the 20 byte dev->data for our 8 byte filter buffer
+		 * to avoid allocating memory that is tricky to free later
+		 */
+		u32 crc_bits;
+		struct netdev_hw_addr *ha;
+
+		memset(m_filter, 0, AX_MCAST_FLTSIZE);
+
+		netdev_for_each_mc_addr(ha, net) {
+			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
+			*(m_filter + (crc_bits >> 3)) |= (1 << (crc_bits & 7));
+		}
+
+		ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_MULFLTARY,
+					AX_MCAST_FLTSIZE, AX_MCAST_FLTSIZE,
+					m_filter);
+
+		data->rxctl |= AX_RX_CTL_AM;
+	}
+
+	ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_RX_CTL,
+				2, 2, &data->rxctl);
+}
+
+static int
+ax88179_set_features(struct net_device *net, netdev_features_t features)
+{
+	u8 tmp;
+	struct usbnet *dev = netdev_priv(net);
+	netdev_features_t changed = net->features ^ features;
+
+	if (changed & NETIF_F_TSO)
+		net->features ^= NETIF_F_TSO;
+
+	if (changed & NETIF_F_SG)
+		net->features ^= NETIF_F_SG;
+
+	if (changed & NETIF_F_IP_CSUM) {
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
+		tmp ^= AX_TXCOE_TCP | AX_TXCOE_UDP;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
+
+		net->features ^= NETIF_F_IP_CSUM;
+	}
+
+	if (changed & NETIF_F_IPV6_CSUM) {
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
+		tmp ^= AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
+
+		net->features ^= NETIF_F_IPV6_CSUM;
+	}
+
+	if (changed & NETIF_F_RXCSUM) {
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
+		tmp ^= AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
+		       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
+
+		net->features ^= NETIF_F_RXCSUM;
+	}
+
+	return 0;
+}
+
+static int ax88179_change_mtu(struct net_device *net, int new_mtu)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 tmp16;
+
+	if (new_mtu <= 0 || new_mtu > 4088)
+		return -EINVAL;
+
+	net->mtu = new_mtu;
+	dev->hard_mtu = net->mtu + net->hard_header_len;
+
+	if (net->mtu > 1500) {
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+				 2, 2, &tmp16);
+		tmp16 |= AX_MEDIUM_JUMBO_EN;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+				  2, 2, &tmp16);
+	} else {
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+				 2, 2, &tmp16);
+		tmp16 &= ~AX_MEDIUM_JUMBO_EN;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+				  2, 2, &tmp16);
+	}
+
+	return 0;
+}
+
+static int ax88179_set_mac_addr(struct net_device *net, void *p)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct sockaddr *addr = p;
+
+	if (netif_running(net))
+		return -EBUSY;
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
+
+	/* Set the MAC address */
+	return ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
+				 ETH_ALEN, net->dev_addr);
+}
+
+static const struct net_device_ops ax88179_netdev_ops = {
+	.ndo_open		= usbnet_open,
+	.ndo_stop		= usbnet_stop,
+	.ndo_start_xmit		= usbnet_start_xmit,
+	.ndo_tx_timeout		= usbnet_tx_timeout,
+	.ndo_change_mtu		= ax88179_change_mtu,
+	.ndo_set_mac_address	= ax88179_set_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_do_ioctl		= ax88179_ioctl,
+	.ndo_set_rx_mode	= ax88179_set_multicast,
+	.ndo_set_features	= ax88179_set_features,
+};
+
+static int ax88179_check_eeprom(struct usbnet *dev)
+{
+	u8 i;
+	u8 buf;
+	u8 eeprom[20];
+	u16 csum, delay = HZ / 10;
+	unsigned long jtimeout;
+
+	/* Read EEPROM content */
+	for (i = 0; i < 6; i++) {
+		buf = i;
+		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
+				      1, 1, &buf) < 0)
+			return -EINVAL;
+
+		buf = EEP_RD;
+		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
+				      1, 1, &buf) < 0)
+			return -EINVAL;
+
+		jtimeout = jiffies + delay;
+		do {
+			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
+					 1, 1, &buf);
+
+			if (time_after(jiffies, jtimeout))
+				return -EINVAL;
+
+		} while (buf & EEP_BUSY);
+
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
+				 2, 2, &eeprom[i * 2]);
+		if ((i == 0) && (eeprom[0] == 0xFF))
+			return -EINVAL;
+	}
+
+	csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9];
+	csum = (csum >> 8) + (csum & 0xff);
+	if ((csum + eeprom[10]) != 0xff)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ax88179_check_efuse(struct usbnet *dev, u16 *ledmode)
+{
+	u8	i;
+	u8	efuse[64];
+	u16	csum = 0;
+
+	if (ax88179_read_cmd(dev, AX_ACCESS_EFUS, 0, 64, 64, efuse) < 0)
+		return -EINVAL;
+
+	if (*efuse == 0xFF)
+		return -EINVAL;
+
+	for (i = 0; i < 64; i++)
+		csum = csum + efuse[i];
+
+	while (csum > 255)
+		csum = (csum & 0x00FF) + ((csum >> 8) & 0x00FF);
+
+	if (csum != 0xFF)
+		return -EINVAL;
+
+	*ledmode = (efuse[51] << 8) | efuse[52];
+
+	return 0;
+}
+
+static int ax88179_convert_old_led(struct usbnet *dev, u16 *ledvalue)
+{
+	u16 led;
+
+	/* Loaded the old eFuse LED Mode */
+	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x3C, 1, 2, &led) < 0)
+		return -EINVAL;
+
+	led >>= 8;
+	switch (led) {
+	case 0xFF:
+		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
+		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
+		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
+		break;
+	case 0xFE:
+		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | LED_VALID;
+		break;
+	case 0xFD:
+		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 |
+		      LED2_LINK_10 | LED_VALID;
+		break;
+	case 0xFC:
+		led = LED0_ACTIVE | LED1_ACTIVE | LED1_LINK_1000 | LED2_ACTIVE |
+		      LED2_LINK_100 | LED2_LINK_10 | LED_VALID;
+		break;
+	default:
+		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
+		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
+		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
+		break;
+	}
+
+	*ledvalue = led;
+
+	return 0;
+}
+
+static int ax88179_led_setting(struct usbnet *dev)
+{
+	u8 ledfd, value = 0;
+	u16 tmp, ledact, ledlink, ledvalue = 0, delay = HZ / 10;
+	unsigned long jtimeout;
+
+	/* Check AX88179 version. UA1 or UA2*/
+	ax88179_read_cmd(dev, AX_ACCESS_MAC, GENERAL_STATUS, 1, 1, &value);
+
+	if (!(value & AX_SECLD)) {	/* UA1 */
+		value = AX_GPIO_CTRL_GPIO3EN | AX_GPIO_CTRL_GPIO2EN |
+			AX_GPIO_CTRL_GPIO1EN;
+		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_GPIO_CTRL,
+				      1, 1, &value) < 0)
+			return -EINVAL;
+	}
+
+	/* Check EEPROM */
+	if (!ax88179_check_eeprom(dev)) {
+		value = 0x42;
+		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
+				      1, 1, &value) < 0)
+			return -EINVAL;
+
+		value = EEP_RD;
+		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
+				      1, 1, &value) < 0)
+			return -EINVAL;
+
+		jtimeout = jiffies + delay;
+		do {
+			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
+					 1, 1, &value);
+
+			if (time_after(jiffies, jtimeout))
+				return -EINVAL;
+
+		} while (value & EEP_BUSY);
+
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_HIGH,
+				 1, 1, &value);
+		ledvalue = (value << 8);
+
+		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
+				 1, 1, &value);
+		ledvalue |= value;
+
+		/* load internal ROM for defaule setting */
+		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
+			ax88179_convert_old_led(dev, &ledvalue);
+
+	} else if (!ax88179_check_efuse(dev, &ledvalue)) {
+		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
+			ax88179_convert_old_led(dev, &ledvalue);
+	} else {
+		ax88179_convert_old_led(dev, &ledvalue);
+	}
+
+	tmp = GMII_PHY_PGSEL_EXT;
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+			  GMII_PHY_PAGE_SELECT, 2, &tmp);
+
+	tmp = 0x2c;
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+			  GMII_PHYPAGE, 2, &tmp);
+
+	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, GMII_LED_ACT,
+			 2, &ledact);
+
+	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+			 GMII_LED_LINK, 2, &ledlink);
+
+	ledact &= GMII_LED_ACTIVE_MASK;
+	ledlink &= GMII_LED_LINK_MASK;
+
+	if (ledvalue & LED0_ACTIVE)
+		ledact |= GMII_LED0_ACTIVE;
+
+	if (ledvalue & LED1_ACTIVE)
+		ledact |= GMII_LED1_ACTIVE;
+
+	if (ledvalue & LED2_ACTIVE)
+		ledact |= GMII_LED2_ACTIVE;
+
+	if (ledvalue & LED0_LINK_10)
+		ledlink |= GMII_LED0_LINK_10;
+
+	if (ledvalue & LED1_LINK_10)
+		ledlink |= GMII_LED1_LINK_10;
+
+	if (ledvalue & LED2_LINK_10)
+		ledlink |= GMII_LED2_LINK_10;
+
+	if (ledvalue & LED0_LINK_100)
+		ledlink |= GMII_LED0_LINK_100;
+
+	if (ledvalue & LED1_LINK_100)
+		ledlink |= GMII_LED1_LINK_100;
+
+	if (ledvalue & LED2_LINK_100)
+		ledlink |= GMII_LED2_LINK_100;
+
+	if (ledvalue & LED0_LINK_1000)
+		ledlink |= GMII_LED0_LINK_1000;
+
+	if (ledvalue & LED1_LINK_1000)
+		ledlink |= GMII_LED1_LINK_1000;
+
+	if (ledvalue & LED2_LINK_1000)
+		ledlink |= GMII_LED2_LINK_1000;
+
+	tmp = ledact;
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, GMII_LED_ACT,
+			  2, &tmp);
+
+	tmp = ledlink;
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, GMII_LED_LINK,
+			  2, &tmp);
+
+	tmp = GMII_PHY_PGSEL_PAGE0;
+	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
+			  GMII_PHY_PAGE_SELECT, 2, &tmp);
+
+	/* LED full duplex setting */
+	ledfd = 0;
+	if (ledvalue & LED0_FD)
+		ledfd |= 0x01;
+	else if ((ledvalue & LED0_USB3_MASK) == 0)
+		ledfd |= 0x02;
+
+	if (ledvalue & LED1_FD)
+		ledfd |= 0x04;
+	else if ((ledvalue & LED1_USB3_MASK) == 0)
+		ledfd |= 0x08;
+
+	if (ledvalue & LED2_FD)
+		ledfd |= 0x10;
+	else if ((ledvalue & LED2_USB3_MASK) == 0)
+		ledfd |= 0x20;
+
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_LEDCTRL, 1, 1, &ledfd);
+
+	return 0;
+}
+
+static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	u8 buf[5];
+	u16 *tmp16;
+	u8 *tmp;
+	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+
+	usbnet_get_endpoints(dev, intf);
+
+	tmp16 = (u16 *)buf;
+	tmp = (u8 *)buf;
+
+	memset(ax179_data, 0, sizeof(*ax179_data));
+
+	/* Power up ethernet PHY */
+	*tmp16 = 0;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+	msleep(200);
+
+	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
+	msleep(100);
+
+	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
+			 ETH_ALEN, dev->net->dev_addr);
+	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
+
+	/* RX bulk configuration */
+	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
+
+	dev->rx_urb_size = 1024 * 20;
+
+	*tmp = 0x34;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
+
+	*tmp = 0x52;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
+			  1, 1, tmp);
+
+	dev->net->netdev_ops = &ax88179_netdev_ops;
+	dev->net->ethtool_ops = &ax88179_ethtool_ops;
+	dev->net->needed_headroom = 8;
+
+	/* Initialize MII structure */
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = ax88179_mdio_read;
+	dev->mii.mdio_write = ax88179_mdio_write;
+	dev->mii.phy_id_mask = 0xff;
+	dev->mii.reg_num_mask = 0xff;
+	dev->mii.phy_id = 0x03;
+	dev->mii.supports_gmii = 1;
+
+	dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			      NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO;
+
+	dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+				 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO;
+
+	/* Enable checksum offload */
+	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
+	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
+	ax88179_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;
+	ax88179_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;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, 0x0b, 2, 2, tmp16);
+
+	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
+	       AX_MONITOR_MODE_RWMP;
+	ax88179_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_ALWAYS_ONE |
+		 AX_MEDIUM_FULL_DUPLEX | AX_MEDIUM_GIGAMODE;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			  2, 2, tmp16);
+
+	ax88179_led_setting(dev);
+
+	/* Restart autoneg */
+	mii_nway_restart(&dev->mii);
+
+	netif_carrier_off(dev->net);
+
+	return 0;
+}
+
+static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+	u16 tmp16;
+
+	/* Configure RX control register => stop operation */
+	tmp16 = AX_RX_CTL_STOP;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
+
+	tmp16 = 0;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);
+
+	/* Power down ethernet PHY */
+	tmp16 = 0;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
+}
+
+static void
+ax88179_rx_checksum(struct sk_buff *skb, struct ax88179_rx_pkt_header *pkt_hdr)
+{
+	skb->ip_summed = CHECKSUM_NONE;
+
+	/* checksum error bit is set */
+	if (pkt_hdr->l3_csum_err || pkt_hdr->l4_csum_err)
+		return;
+
+	/* It must be a TCP or UDP packet with a valid checksum */
+	if ((pkt_hdr->l4_type == AX_RXHDR_L4_TYPE_TCP) ||
+	    (pkt_hdr->l4_type == AX_RXHDR_L4_TYPE_UDP))
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+}
+
+static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	struct sk_buff *ax_skb;
+	int pkt_cnt;
+	u32 rx_hdr;
+	u16 hdr_off;
+	struct ax88179_rx_pkt_header *pkt_hdr;
+
+	skb_trim(skb, skb->len - 4);
+	memcpy(&rx_hdr, skb_tail_pointer(skb), sizeof(rx_hdr));
+	le32_to_cpus(&rx_hdr);
+
+	pkt_cnt = (u16)rx_hdr;
+	hdr_off = (u16)(rx_hdr >> 16);
+	pkt_hdr = (struct ax88179_rx_pkt_header *)(skb->data + hdr_off);
+
+
+	while (pkt_cnt--) {
+		u16 pkt_len;
+
+		le32_to_cpus((u32 *)pkt_hdr);
+		pkt_len = pkt_hdr->len;
+
+		/* Check CRC or runt packet */
+		if (pkt_hdr->crc || pkt_hdr->drop) {
+			skb_pull(skb, (pkt_len + 7) & 0xFFF8);
+			pkt_hdr++;
+			continue;
+		}
+
+		if (pkt_cnt == 0) {
+			/* Skip IP alignment psudo header */
+			skb_pull(skb, 2);
+			skb->len = pkt_len;
+			skb_set_tail_pointer(skb, pkt_len);
+			skb->truesize = pkt_len + sizeof(struct sk_buff);
+			ax88179_rx_checksum(skb, pkt_hdr);
+			return 1;
+		}
+
+		ax_skb = skb_clone(skb, GFP_ATOMIC);
+		if (ax_skb) {
+			ax_skb->len = pkt_len;
+			ax_skb->data = skb->data + 2;
+			skb_set_tail_pointer(ax_skb, pkt_len);
+			ax_skb->truesize = pkt_len + sizeof(struct sk_buff);
+			ax88179_rx_checksum(ax_skb, pkt_hdr);
+			usbnet_skb_return(dev, ax_skb);
+		} else {
+			return 0;
+		}
+
+		skb_pull(skb, (pkt_len + 7) & 0xFFF8);
+		pkt_hdr++;
+	}
+	return 1;
+}
+
+static struct sk_buff *
+ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
+{
+	u32 tx_hdr1, tx_hdr2;
+	int frame_size = dev->maxpacket;
+	int mss = skb_shinfo(skb)->gso_size;
+	int headroom;
+	int tailroom;
+
+	tx_hdr1 = skb->len;
+	tx_hdr2 = mss;
+	if (((skb->len + 8) % frame_size) == 0)
+		tx_hdr2 |= 0x80008000;	/* Enable padding */
+
+	skb_linearize(skb);
+	headroom = skb_headroom(skb);
+	tailroom = skb_tailroom(skb);
+
+	if (!skb_header_cloned(skb) &&
+	    !skb_cloned(skb) &&
+	    (headroom + tailroom) >= 8) {
+		if (headroom < 8) {
+			skb->data = memmove(skb->head + 8, skb->data, skb->len);
+			skb_set_tail_pointer(skb, skb->len);
+		}
+	} else {
+		struct sk_buff *skb2;
+
+		skb2 = skb_copy_expand(skb, 8, 0, flags);
+		dev_kfree_skb_any(skb);
+		skb = skb2;
+		if (!skb)
+			return NULL;
+	}
+
+	skb_push(skb, 4);
+	cpu_to_le32s(&tx_hdr2);
+	skb_copy_to_linear_data(skb, &tx_hdr2, 4);
+
+	skb_push(skb, 4);
+	cpu_to_le32s(&tx_hdr1);
+	skb_copy_to_linear_data(skb, &tx_hdr1, 4);
+
+	return skb;
+}
+
+static int ax88179_link_reset(struct usbnet *dev)
+{
+	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+	u8 tmp[5], link_sts;
+	u16 mode, tmp16, delay = HZ / 10;
+	u32 tmp32 = 0x40000000;
+	unsigned long jtimeout;
+
+	jtimeout = jiffies + delay;
+	while (tmp32 & 0x40000000) {
+		mode = 0;
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode);
+		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2,
+				  &ax179_data->rxctl);
+
+		/*link up, check the usb device control TX FIFO full or empty*/
+		ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32);
+
+		if (time_after(jiffies, jtimeout))
+			return 0;
+	}
+
+	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
+	       AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_ALWAYS_ONE;
+
+	ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
+			 1, 1, &link_sts);
+
+	ax88179_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;
+		if (dev->net->mtu > 1500)
+			mode |= 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 */
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
+
+	dev->rx_urb_size = (1024 * (tmp[3] + 2));
+
+	if (tmp16 & GMII_PHY_PHYSR_FULL)
+		mode |= AX_MEDIUM_FULL_DUPLEX;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			  2, 2, &mode);
+
+	netif_carrier_on(dev->net);
+
+	return 0;
+}
+
+static int ax88179_reset(struct usbnet *dev)
+{
+	u8 buf[5];
+	u16 *tmp16;
+	u8 *tmp;
+
+	tmp16 = (u16 *)buf;
+	tmp = (u8 *)buf;
+
+	/* Power up ethernet PHY */
+	*tmp16 = 0;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+
+	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
+	msleep(200);
+
+	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
+	msleep(100);
+
+	/* Ethernet PHY Auto Detach*/
+	ax88179_auto_detach(dev, 0);
+
+	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
+			 dev->net->dev_addr);
+	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
+
+	/* RX bulk configuration */
+	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
+
+	dev->rx_urb_size = 1024 * 20;
+
+	*tmp = 0x34;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);
+
+	*tmp = 0x52;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
+			  1, 1, tmp);
+
+	dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+			      NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO;
+
+	dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+				 NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO;
+
+	/* Enable checksum offload */
+	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
+	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
+	ax88179_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;
+	ax88179_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;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, 0x0b, 2, 2, tmp16);
+
+	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
+	       AX_MONITOR_MODE_RWMP;
+	ax88179_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_ALWAYS_ONE |
+		 AX_MEDIUM_FULL_DUPLEX | AX_MEDIUM_GIGAMODE;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			  2, 2, tmp16);
+
+	ax88179_led_setting(dev);
+
+	/* Restart autoneg */
+	mii_nway_restart(&dev->mii);
+
+	netif_carrier_off(dev->net);
+
+	return 0;
+}
+
+static int ax88179_stop(struct usbnet *dev)
+{
+	u16 tmp16;
+
+	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			 2, 2, &tmp16);
+	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
+	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
+			  2, 2, &tmp16);
+
+	return 0;
+}
+
+static const struct driver_info ax88179_info = {
+	.description = "ASIX AX88179 USB 3.0 Gigibit Ethernet",
+	.bind = ax88179_bind,
+	.unbind = ax88179_unbind,
+	.status = ax88179_status,
+	.link_reset = ax88179_link_reset,
+	.reset = ax88179_reset,
+	.stop = ax88179_stop,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
+	.rx_fixup = ax88179_rx_fixup,
+	.tx_fixup = ax88179_tx_fixup,
+};
+
+static const struct driver_info ax88178a_info = {
+	.description = "ASIX AX88178A USB 2.0 Gigibit Ethernet",
+	.bind = ax88179_bind,
+	.unbind = ax88179_unbind,
+	.status = ax88179_status,
+	.link_reset = ax88179_link_reset,
+	.reset = ax88179_reset,
+	.stop = ax88179_stop,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
+	.rx_fixup = ax88179_rx_fixup,
+	.tx_fixup = ax88179_tx_fixup,
+};
+
+static const struct driver_info sitecom_info = {
+	.description = "Sitecom USB 3.0 to Gigabit Adapter",
+	.bind = ax88179_bind,
+	.unbind = ax88179_unbind,
+	.status = ax88179_status,
+	.link_reset = ax88179_link_reset,
+	.reset = ax88179_reset,
+	.stop = ax88179_stop,
+	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
+	.rx_fixup = ax88179_rx_fixup,
+	.tx_fixup = ax88179_tx_fixup,
+};
+
+static const struct usb_device_id products[] = {
+{
+	/* ASIX AX88179 10/100/1000 */
+	USB_DEVICE(0x0b95, 0x1790),
+	.driver_info = (unsigned long)&ax88179_info,
+}, {
+	/* ASIX AX88178A 10/100/1000 */
+	USB_DEVICE(0x0b95, 0x178a),
+	.driver_info = (unsigned long)&ax88178a_info,
+}, {
+	/* Sitecom USB 3.0 to Gigabit Adapter */
+	USB_DEVICE(0x0df6, 0x0072),
+	.driver_info = (unsigned long) &sitecom_info,
+},
+	{ },
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver asix_driver = {
+	.name =		"ax88179_178a",
+	.id_table =	products,
+	.probe =	usbnet_probe,
+	.suspend =	ax88179_suspend,
+	.resume =	ax88179_resume,
+	.disconnect =	usbnet_disconnect,
+};
+
+static int __init asix_init(void)
+{
+	return usb_register(&asix_driver);
+}
+module_init(asix_init);
+
+static void __exit asix_exit(void)
+{
+	usb_deregister(&asix_driver);
+}
+module_exit(asix_exit);
+
+MODULE_DESCRIPTION("ASIX AX88179/178A based USB 3.0/2.0 Gigabit Ethernet Devices");
+MODULE_LICENSE("GPL");
-- 
1.7.9.5


^ permalink raw reply related	[flat|nested] 27+ messages in thread