asix.c

linux 内核源代码

	asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
	asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
			ADVERTISE_ALL | ADVERTISE_CSMA);
	mii_nway_restart(&dev->mii);

	if ((ret = asix_write_medium_mode(dev, AX88772_MEDIUM_DEFAULT)) < 0)
		goto out;

	if ((ret = asix_write_cmd(dev, AX_CMD_WRITE_IPG0,
				AX88772_IPG0_DEFAULT | AX88772_IPG1_DEFAULT,
				AX88772_IPG2_DEFAULT, 0, NULL)) < 0) {
		dbg("Write IPG,IPG1,IPG2 failed: %d", ret);
		goto out;
	}

	/* Set RX_CTL to default values with 2k buffer, and enable cactus */
	if ((ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL)) < 0)
		goto out;

	rx_ctl = asix_read_rx_ctl(dev);
	dbg("RX_CTL is 0x%04x after all initializations", rx_ctl);

	rx_ctl = asix_read_medium_status(dev);
	dbg("Medium Status is 0x%04x after all initializations", rx_ctl);

	/* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
	if (dev->driver_info->flags & FLAG_FRAMING_AX) {
		/* hard_mtu  is still the default - the device does not support
		   jumbo eth frames */
		dev->rx_urb_size = 2048;
	}
	return 0;

out:
	return ret;
}

static struct ethtool_ops ax88178_ethtool_ops = {
	.get_drvinfo		= asix_get_drvinfo,
	.get_link		= asix_get_link,
	.get_msglevel		= usbnet_get_msglevel,
	.set_msglevel		= usbnet_set_msglevel,
	.get_wol		= asix_get_wol,
	.set_wol		= asix_set_wol,
	.get_eeprom_len		= asix_get_eeprom_len,
	.get_eeprom		= asix_get_eeprom,
	.get_settings		= usbnet_get_settings,
	.set_settings		= usbnet_set_settings,
	.nway_reset		= usbnet_nway_reset,
};

static int marvell_phy_init(struct usbnet *dev)
{
	struct asix_data *data = (struct asix_data *)&dev->data;
	u16 reg;

	devdbg(dev,"marvell_phy_init()");

	reg = asix_mdio_read(dev->net, dev->mii.phy_id, MII_MARVELL_STATUS);
	devdbg(dev,"MII_MARVELL_STATUS = 0x%04x", reg);

	asix_mdio_write(dev->net, dev->mii.phy_id, MII_MARVELL_CTRL,
			MARVELL_CTRL_RXDELAY | MARVELL_CTRL_TXDELAY);

	if (data->ledmode) {
		reg = asix_mdio_read(dev->net, dev->mii.phy_id,
			MII_MARVELL_LED_CTRL);
		devdbg(dev,"MII_MARVELL_LED_CTRL (1) = 0x%04x", reg);

		reg &= 0xf8ff;
		reg |= (1 + 0x0100);
		asix_mdio_write(dev->net, dev->mii.phy_id,
			MII_MARVELL_LED_CTRL, reg);

		reg = asix_mdio_read(dev->net, dev->mii.phy_id,
			MII_MARVELL_LED_CTRL);
		devdbg(dev,"MII_MARVELL_LED_CTRL (2) = 0x%04x", reg);
		reg &= 0xfc0f;
	}

	return 0;
}

static int marvell_led_status(struct usbnet *dev, u16 speed)
{
	u16 reg = asix_mdio_read(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL);

	devdbg(dev, "marvell_led_status() read 0x%04x", reg);

	/* Clear out the center LED bits - 0x03F0 */
	reg &= 0xfc0f;

	switch (speed) {
		case SPEED_1000:
			reg |= 0x03e0;
			break;
		case SPEED_100:
			reg |= 0x03b0;
			break;
		default:
			reg |= 0x02f0;
	}

	devdbg(dev, "marvell_led_status() writing 0x%04x", reg);
	asix_mdio_write(dev->net, dev->mii.phy_id, MARVELL_LED_MANUAL, reg);

	return 0;
}

static int ax88178_link_reset(struct usbnet *dev)
{
	u16 mode;
	struct ethtool_cmd ecmd;
	struct asix_data *data = (struct asix_data *)&dev->data;

	devdbg(dev,"ax88178_link_reset()");

	mii_check_media(&dev->mii, 1, 1);
	mii_ethtool_gset(&dev->mii, &ecmd);
	mode = AX88178_MEDIUM_DEFAULT;

	if (ecmd.speed == SPEED_1000)
		mode |= AX_MEDIUM_GM | AX_MEDIUM_ENCK;
	else if (ecmd.speed == SPEED_100)
		mode |= AX_MEDIUM_PS;
	else
		mode &= ~(AX_MEDIUM_PS | AX_MEDIUM_GM);

	if (ecmd.duplex == DUPLEX_FULL)
		mode |= AX_MEDIUM_FD;
	else
		mode &= ~AX_MEDIUM_FD;

	devdbg(dev, "ax88178_link_reset() speed: %d duplex: %d setting mode to 0x%04x", ecmd.speed, ecmd.duplex, mode);

	asix_write_medium_mode(dev, mode);

	if (data->phymode == PHY_MODE_MARVELL && data->ledmode)
		marvell_led_status(dev, ecmd.speed);

	return 0;
}

static void ax88178_set_mfb(struct usbnet *dev)
{
	u16 mfb = AX_RX_CTL_MFB_16384;
	u16 rxctl;
	u16 medium;
	int old_rx_urb_size = dev->rx_urb_size;

	if (dev->hard_mtu < 2048) {
		dev->rx_urb_size = 2048;
		mfb = AX_RX_CTL_MFB_2048;
	} else if (dev->hard_mtu < 4096) {
		dev->rx_urb_size = 4096;
		mfb = AX_RX_CTL_MFB_4096;
	} else if (dev->hard_mtu < 8192) {
		dev->rx_urb_size = 8192;
		mfb = AX_RX_CTL_MFB_8192;
	} else if (dev->hard_mtu < 16384) {
		dev->rx_urb_size = 16384;
		mfb = AX_RX_CTL_MFB_16384;
	}

	rxctl = asix_read_rx_ctl(dev);
	asix_write_rx_ctl(dev, (rxctl & ~AX_RX_CTL_MFB_16384) | mfb);

	medium = asix_read_medium_status(dev);
	if (dev->net->mtu > 1500)
		medium |= AX_MEDIUM_JFE;
	else
		medium &= ~AX_MEDIUM_JFE;
	asix_write_medium_mode(dev, medium);

	if (dev->rx_urb_size > old_rx_urb_size)
		usbnet_unlink_rx_urbs(dev);
}

static int ax88178_change_mtu(struct net_device *net, int new_mtu)
{
	struct usbnet *dev = netdev_priv(net);
	int ll_mtu = new_mtu + net->hard_header_len + 4;

	devdbg(dev, "ax88178_change_mtu() new_mtu=%d", new_mtu);

	if (new_mtu <= 0 || ll_mtu > 16384)
		return -EINVAL;

	if ((ll_mtu % dev->maxpacket) == 0)
		return -EDOM;

	net->mtu = new_mtu;
	dev->hard_mtu = net->mtu + net->hard_header_len;
	ax88178_set_mfb(dev);

	return 0;
}

static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
{
	struct asix_data *data = (struct asix_data *)&dev->data;
	int ret;
	u8 buf[ETH_ALEN];
	__le16 eeprom;
	u8 status;
	int gpio0 = 0;
	u32 phyid;

	usbnet_get_endpoints(dev,intf);

	asix_read_cmd(dev, AX_CMD_READ_GPIOS, 0, 0, 1, &status);
	dbg("GPIO Status: 0x%04x", status);

	asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0, 0, 0, NULL);
	asix_read_cmd(dev, AX_CMD_READ_EEPROM, 0x0017, 0, 2, &eeprom);
	asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0, 0, 0, NULL);

	dbg("EEPROM index 0x17 is 0x%04x", eeprom);

	if (eeprom == cpu_to_le16(0xffff)) {
		data->phymode = PHY_MODE_MARVELL;
		data->ledmode = 0;
		gpio0 = 1;
	} else {
		data->phymode = le16_to_cpu(eeprom) & 7;
		data->ledmode = le16_to_cpu(eeprom) >> 8;
		gpio0 = (le16_to_cpu(eeprom) & 0x80) ? 0 : 1;
	}
	dbg("GPIO0: %d, PhyMode: %d", gpio0, data->phymode);

	asix_write_gpio(dev, AX_GPIO_RSE | AX_GPIO_GPO_1 | AX_GPIO_GPO1EN, 40);
	if ((le16_to_cpu(eeprom) >> 8) != 1) {
		asix_write_gpio(dev, 0x003c, 30);
		asix_write_gpio(dev, 0x001c, 300);
		asix_write_gpio(dev, 0x003c, 30);
	} else {
		dbg("gpio phymode == 1 path");
		asix_write_gpio(dev, AX_GPIO_GPO1EN, 30);
		asix_write_gpio(dev, AX_GPIO_GPO1EN | AX_GPIO_GPO_1, 30);
	}

	asix_sw_reset(dev, 0);
	msleep(150);

	asix_sw_reset(dev, AX_SWRESET_PRL | AX_SWRESET_IPPD);
	msleep(150);

	asix_write_rx_ctl(dev, 0);

	/* Get the MAC address */
	if ((ret = asix_read_cmd(dev, AX_CMD_READ_NODE_ID,
				0, 0, ETH_ALEN, buf)) < 0) {
		dbg("Failed to read MAC address: %d", ret);
		goto out;
	}
	memcpy(dev->net->dev_addr, buf, ETH_ALEN);

	/* Initialize MII structure */
	dev->mii.dev = dev->net;
	dev->mii.mdio_read = asix_mdio_read;
	dev->mii.mdio_write = asix_mdio_write;
	dev->mii.phy_id_mask = 0x1f;
	dev->mii.reg_num_mask = 0xff;
	dev->mii.supports_gmii = 1;
	dev->net->do_ioctl = asix_ioctl;
	dev->mii.phy_id = asix_get_phy_addr(dev);
	dev->net->set_multicast_list = asix_set_multicast;
	dev->net->ethtool_ops = &ax88178_ethtool_ops;
	dev->net->change_mtu = &ax88178_change_mtu;

	phyid = asix_get_phyid(dev);
	dbg("PHYID=0x%08x", phyid);

	if (data->phymode == PHY_MODE_MARVELL) {
		marvell_phy_init(dev);
		msleep(60);
	}

	asix_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR,
			BMCR_RESET | BMCR_ANENABLE);
	asix_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
			ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
	asix_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000,
			ADVERTISE_1000FULL);

	mii_nway_restart(&dev->mii);

	if ((ret = asix_write_medium_mode(dev, AX88178_MEDIUM_DEFAULT)) < 0)
		goto out;

	if ((ret = asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL)) < 0)
		goto out;

	/* Asix framing packs multiple eth frames into a 2K usb bulk transfer */
	if (dev->driver_info->flags & FLAG_FRAMING_AX) {
		/* hard_mtu  is still the default - the device does not support
		   jumbo eth frames */
		dev->rx_urb_size = 2048;
	}
	return 0;

out:
	return ret;
}

static const struct driver_info ax8817x_info = {
	.description = "ASIX AX8817x USB 2.0 Ethernet",
	.bind = ax88172_bind,
	.status = asix_status,
	.link_reset = ax88172_link_reset,
	.reset = ax88172_link_reset,
	.flags =  FLAG_ETHER,
	.data = 0x00130103,
};

static const struct driver_info dlink_dub_e100_info = {
	.description = "DLink DUB-E100 USB Ethernet",
	.bind = ax88172_bind,
	.status = asix_status,
	.link_reset = ax88172_link_reset,
	.reset = ax88172_link_reset,
	.flags =  FLAG_ETHER,
	.data = 0x009f9d9f,
};

static const struct driver_info netgear_fa120_info = {
	.description = "Netgear FA-120 USB Ethernet",
	.bind = ax88172_bind,
	.status = asix_status,
	.link_reset = ax88172_link_reset,
	.reset = ax88172_link_reset,
	.flags =  FLAG_ETHER,
	.data = 0x00130103,
};

static const struct driver_info hawking_uf200_info = {
	.description = "Hawking UF200 USB Ethernet",
	.bind = ax88172_bind,
	.status = asix_status,
	.link_reset = ax88172_link_reset,
	.reset = ax88172_link_reset,
	.flags =  FLAG_ETHER,
	.data = 0x001f1d1f,
};

static const struct driver_info ax88772_info = {
	.description = "ASIX AX88772 USB 2.0 Ethernet",
	.bind = ax88772_bind,
	.status = asix_status,
	.link_reset = ax88772_link_reset,
	.reset = ax88772_link_reset,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = asix_rx_fixup,
	.tx_fixup = asix_tx_fixup,
};

static const struct driver_info ax88178_info = {
	.description = "ASIX AX88178 USB 2.0 Ethernet",
	.bind = ax88178_bind,
	.status = asix_status,
	.link_reset = ax88178_link_reset,
	.reset = ax88178_link_reset,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = asix_rx_fixup,
	.tx_fixup = asix_tx_fixup,
};

static const struct usb_device_id	products [] = {
{
	// Linksys USB200M
	USB_DEVICE (0x077b, 0x2226),
	.driver_info =	(unsigned long) &ax8817x_info,
}, {
	// Netgear FA120
	USB_DEVICE (0x0846, 0x1040),
	.driver_info =  (unsigned long) &netgear_fa120_info,
}, {
	// DLink DUB-E100
	USB_DEVICE (0x2001, 0x1a00),
	.driver_info =  (unsigned long) &dlink_dub_e100_info,
}, {
	// Intellinet, ST Lab USB Ethernet
	USB_DEVICE (0x0b95, 0x1720),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// Hawking UF200, TrendNet TU2-ET100
	USB_DEVICE (0x07b8, 0x420a),
	.driver_info =  (unsigned long) &hawking_uf200_info,
}, {
	// Billionton Systems, USB2AR
	USB_DEVICE (0x08dd, 0x90ff),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// ATEN UC210T
	USB_DEVICE (0x0557, 0x2009),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// Buffalo LUA-U2-KTX
	USB_DEVICE (0x0411, 0x003d),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// Sitecom LN-029 "USB 2.0 10/100 Ethernet adapter"
	USB_DEVICE (0x6189, 0x182d),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// corega FEther USB2-TX
	USB_DEVICE (0x07aa, 0x0017),
	.driver_info =  (unsigned long) &ax8817x_info,
}, {
	// Surecom EP-1427X-2
	USB_DEVICE (0x1189, 0x0893),
	.driver_info = (unsigned long) &ax8817x_info,
}, {
	// goodway corp usb gwusb2e
	USB_DEVICE (0x1631, 0x6200),
	.driver_info = (unsigned long) &ax8817x_info,
}, {
	// JVC MP-PRX1 Port Replicator
	USB_DEVICE (0x04f1, 0x3008),
	.driver_info = (unsigned long) &ax8817x_info,
}, {
	// ASIX AX88772 10/100
	USB_DEVICE (0x0b95, 0x7720),
	.driver_info = (unsigned long) &ax88772_info,
}, {
	// ASIX AX88178 10/100/1000
	USB_DEVICE (0x0b95, 0x1780),
	.driver_info = (unsigned long) &ax88178_info,
}, {
	// Linksys USB200M Rev 2
	USB_DEVICE (0x13b1, 0x0018),
	.driver_info = (unsigned long) &ax88772_info,
}, {
	// 0Q0 cable ethernet
	USB_DEVICE (0x1557, 0x7720),
	.driver_info = (unsigned long) &ax88772_info,
}, {
	// DLink DUB-E100 H/W Ver B1
	USB_DEVICE (0x07d1, 0x3c05),
	.driver_info = (unsigned long) &ax88772_info,
}, {
	// DLink DUB-E100 H/W Ver B1 Alternate
	USB_DEVICE (0x2001, 0x3c05),
	.driver_info = (unsigned long) &ax88772_info,
}, {
	// Linksys USB1000
	USB_DEVICE (0x1737, 0x0039),
	.driver_info = (unsigned long) &ax88178_info,
}, {
	// IO-DATA ETG-US2
	USB_DEVICE (0x04bb, 0x0930),
	.driver_info = (unsigned long) &ax88178_info,
}, {
	// Belkin F5D5055
	USB_DEVICE(0x050d, 0x5055),
	.driver_info = (unsigned long) &ax88178_info,
},
	{ },		// END
};
MODULE_DEVICE_TABLE(usb, products);

static struct usb_driver asix_driver = {
	.name =		"asix",
	.id_table =	products,
	.probe =	usbnet_probe,
	.suspend =	usbnet_suspend,
	.resume =	usbnet_resume,
	.disconnect =	usbnet_disconnect,
	.supports_autosuspend = 1,
};

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_AUTHOR("David Hollis");
MODULE_DESCRIPTION("ASIX AX8817X based USB 2.0 Ethernet Devices");
MODULE_LICENSE("GPL");