Commit 19a38d8e authored by Liu Junliang's avatar Liu Junliang Committed by David S. Miller
Browse files

USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support 



Signed-off-by: default avatarLiu Junliang <liujunliang_ljl@163.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bf06200e

drivers/net/usb/Kconfig

+16 −0
Original line number Diff line number Diff line
@@ -292,6 +292,22 @@ config USB_NET_SR9700 
	  This option adds support for CoreChip-sz SR9700 based USB 1.1

	  10/100 Ethernet adapters.



config USB_NET_SR9800

	tristate "CoreChip-sz SR9800 based USB 2.0 10/100 ethernet devices"

	depends on USB_USBNET

	select CRC32

	default y

	---help---

	  Say Y if you want to use one of the following 100Mbps USB Ethernet

	  device based on the CoreChip-sz SR9800 chip.



	  This driver makes the adapter appear as a normal Ethernet interface,

	  typically on eth0, if it is the only ethernet device, or perhaps on

	  eth1, if you have a PCI or ISA ethernet card installed.



	  To compile this driver as a module, choose M here: the

	  module will be called sr9800.



config USB_NET_SMSC75XX

	tristate "SMSC LAN75XX based USB 2.0 gigabit ethernet devices"

	depends on USB_USBNET

drivers/net/usb/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o r815x.o 
obj-$(CONFIG_USB_NET_CDC_EEM)	+= cdc_eem.o

obj-$(CONFIG_USB_NET_DM9601)	+= dm9601.o

obj-$(CONFIG_USB_NET_SR9700)	+= sr9700.o

obj-$(CONFIG_USB_NET_SR9800)	+= sr9800.o

obj-$(CONFIG_USB_NET_SMSC75XX)	+= smsc75xx.o

obj-$(CONFIG_USB_NET_SMSC95XX)	+= smsc95xx.o

obj-$(CONFIG_USB_NET_GL620A)	+= gl620a.o

drivers/net/usb/sr9800.c

0 → 100644
+870 −0
Original line number Diff line number Diff line 
/* CoreChip-sz SR9800 one chip USB 2.0 Ethernet Devices

 *

 * Author : Liu Junliang <liujunliang_ljl@163.com>

 *

 * Based on asix_common.c, asix_devices.c

 *

 * This file is licensed under the terms of the GNU General Public License

 * version 2.  This program is licensed "as is" without any warranty of any

 * kind, whether express or implied.*

 */



#include <linux/module.h>

#include <linux/kmod.h>

#include <linux/init.h>

#include <linux/netdevice.h>

#include <linux/etherdevice.h>

#include <linux/ethtool.h>

#include <linux/workqueue.h>

#include <linux/mii.h>

#include <linux/usb.h>

#include <linux/crc32.h>

#include <linux/usb/usbnet.h>

#include <linux/slab.h>

#include <linux/if_vlan.h>



#include "sr9800.h"



static int sr_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,

			    u16 size, void *data)

{

	int err;



	err = usbnet_read_cmd(dev, cmd, SR_REQ_RD_REG, value, index,

			      data, size);

	if ((err != size) && (err >= 0))

		err = -EINVAL;



	return err;

}



static int sr_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,

			     u16 size, void *data)

{

	int err;



	err = usbnet_write_cmd(dev, cmd, SR_REQ_WR_REG, value, index,

			      data, size);

	if ((err != size) && (err >= 0))

		err = -EINVAL;



	return err;

}



static void

sr_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,

		   u16 size, void *data)

{

	usbnet_write_cmd_async(dev, cmd, SR_REQ_WR_REG, value, index, data,

			       size);

}



static int sr_rx_fixup(struct usbnet *dev, struct sk_buff *skb)

{

	int offset = 0;



	while (offset + sizeof(u32) < skb->len) {

		struct sk_buff *sr_skb;

		u16 size;

		u32 header = get_unaligned_le32(skb->data + offset);



		offset += sizeof(u32);

		/* get the packet length */

		size = (u16) (header & 0x7ff);

		if (size != ((~header >> 16) & 0x07ff)) {

			netdev_err(dev->net, "%s : Bad Header Length\n",

				   __func__);

			return 0;

		}



		if ((size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) ||

		    (size + offset > skb->len)) {

			netdev_err(dev->net, "%s : Bad RX Length %d\n",

				   __func__, size);

			return 0;

		}

		sr_skb = netdev_alloc_skb_ip_align(dev->net, size);

		if (!sr_skb)

			return 0;



		skb_put(sr_skb, size);

		memcpy(sr_skb->data, skb->data + offset, size);

		usbnet_skb_return(dev, sr_skb);



		offset += (size + 1) & 0xfffe;

	}



	if (skb->len != offset) {

		netdev_err(dev->net, "%s : Bad SKB Length %d\n", __func__,

			   skb->len);

		return 0;

	}



	return 1;

}



static struct sk_buff *sr_tx_fixup(struct usbnet *dev, struct sk_buff *skb,

					gfp_t flags)

{

	int headroom = skb_headroom(skb);

	int tailroom = skb_tailroom(skb);

	u32 padbytes = 0xffff0000;

	u32 packet_len;

	int padlen;



	padlen = ((skb->len + 4) % (dev->maxpacket - 1)) ? 0 : 4;



	if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (4 + padlen))) {

		if ((headroom < 4) || (tailroom < padlen)) {

			skb->data = memmove(skb->head + 4, skb->data,

					    skb->len);

			skb_set_tail_pointer(skb, skb->len);

		}

	} else {

		struct sk_buff *skb2;

		skb2 = skb_copy_expand(skb, 4, padlen, flags);

		dev_kfree_skb_any(skb);

		skb = skb2;

		if (!skb)

			return NULL;

	}



	skb_push(skb, 4);

	packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);

	cpu_to_le32s(&packet_len);

	skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));



	if (padlen) {

		cpu_to_le32s(&padbytes);

		memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));

		skb_put(skb, sizeof(padbytes));

	}



	return skb;

}



static void sr_status(struct usbnet *dev, struct urb *urb)

{

	struct sr9800_int_data *event;

	int link;



	if (urb->actual_length < 8)

		return;



	event = urb->transfer_buffer;

	link = event->link & 0x01;

	if (netif_carrier_ok(dev->net) != link) {

		usbnet_link_change(dev, link, 1);

		netdev_dbg(dev->net, "Link Status is: %d\n", link);

	}



	return;

}



static inline int sr_set_sw_mii(struct usbnet *dev)

{

	int ret;



	ret = sr_write_cmd(dev, SR_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net, "Failed to enable software MII access\n");

	return ret;

}



static inline int sr_set_hw_mii(struct usbnet *dev)

{

	int ret;



	ret = sr_write_cmd(dev, SR_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net, "Failed to enable hardware MII access\n");

	return ret;

}



static inline int sr_get_phy_addr(struct usbnet *dev)

{

	u8 buf[2];

	int ret;



	ret = sr_read_cmd(dev, SR_CMD_READ_PHY_ID, 0, 0, 2, buf);

	if (ret < 0) {

		netdev_err(dev->net, "%s : Error reading PHYID register:%02x\n",

			   __func__, ret);

		goto out;

	}

	netdev_dbg(dev->net, "%s : returning 0x%04x\n", __func__,

		   *((__le16 *)buf));



	ret = buf[1];



out:

	return ret;

}



static int sr_sw_reset(struct usbnet *dev, u8 flags)

{

	int ret;



	ret = sr_write_cmd(dev, SR_CMD_SW_RESET, flags, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net, "Failed to send software reset:%02x\n",

			   ret);



	return ret;

}



static u16 sr_read_rx_ctl(struct usbnet *dev)

{

	__le16 v;

	int ret;



	ret = sr_read_cmd(dev, SR_CMD_READ_RX_CTL, 0, 0, 2, &v);

	if (ret < 0) {

		netdev_err(dev->net, "Error reading RX_CTL register:%02x\n",

			   ret);

		goto out;

	}



	ret = le16_to_cpu(v);

out:

	return ret;

}



static int sr_write_rx_ctl(struct usbnet *dev, u16 mode)

{

	int ret;



	netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);

	ret = sr_write_cmd(dev, SR_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net,

			   "Failed to write RX_CTL mode to 0x%04x:%02x\n",

			   mode, ret);



	return ret;

}



static u16 sr_read_medium_status(struct usbnet *dev)

{

	__le16 v;

	int ret;



	ret = sr_read_cmd(dev, SR_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);

	if (ret < 0) {

		netdev_err(dev->net,

			   "Error reading Medium Status register:%02x\n", ret);

		return ret;	/* TODO: callers not checking for error ret */

	}



	return le16_to_cpu(v);

}



static int sr_write_medium_mode(struct usbnet *dev, u16 mode)

{

	int ret;



	netdev_dbg(dev->net, "%s : mode = 0x%04x\n", __func__, mode);

	ret = sr_write_cmd(dev, SR_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net,

			   "Failed to write Medium Mode mode to 0x%04x:%02x\n",

			   mode, ret);

	return ret;

}



static int sr_write_gpio(struct usbnet *dev, u16 value, int sleep)

{

	int ret;



	netdev_dbg(dev->net, "%s : value = 0x%04x\n", __func__, value);

	ret = sr_write_cmd(dev, SR_CMD_WRITE_GPIOS, value, 0, 0, NULL);

	if (ret < 0)

		netdev_err(dev->net, "Failed to write GPIO value 0x%04x:%02x\n",

			   value, ret);

	if (sleep)

		msleep(sleep);



	return ret;

}



/* SR9800 have a 16-bit RX_CTL value */

static void sr_set_multicast(struct net_device *net)

{

	struct usbnet *dev = netdev_priv(net);

	struct sr_data *data = (struct sr_data *)&dev->data;

	u16 rx_ctl = SR_DEFAULT_RX_CTL;



	if (net->flags & IFF_PROMISC) {

		rx_ctl |= SR_RX_CTL_PRO;

	} else if (net->flags & IFF_ALLMULTI ||

		   netdev_mc_count(net) > SR_MAX_MCAST) {

		rx_ctl |= SR_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

		 */

		struct netdev_hw_addr *ha;

		u32 crc_bits;



		memset(data->multi_filter, 0, SR_MCAST_FILTER_SIZE);



		/* Build the multicast hash filter. */

		netdev_for_each_mc_addr(ha, net) {

			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;

			data->multi_filter[crc_bits >> 3] |=

			    1 << (crc_bits & 7);

		}



		sr_write_cmd_async(dev, SR_CMD_WRITE_MULTI_FILTER, 0, 0,

				   SR_MCAST_FILTER_SIZE, data->multi_filter);



		rx_ctl |= SR_RX_CTL_AM;

	}



	sr_write_cmd_async(dev, SR_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);

}



static int sr_mdio_read(struct net_device *net, int phy_id, int loc)

{

	struct usbnet *dev = netdev_priv(net);

	__le16 res;



	mutex_lock(&dev->phy_mutex);

	sr_set_sw_mii(dev);

	sr_read_cmd(dev, SR_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, &res);

	sr_set_hw_mii(dev);

	mutex_unlock(&dev->phy_mutex);



	netdev_dbg(dev->net,

		   "%s : phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n", __func__,

		   phy_id, loc, le16_to_cpu(res));



	return le16_to_cpu(res);

}



static void

sr_mdio_write(struct net_device *net, int phy_id, int loc, int val)

{

	struct usbnet *dev = netdev_priv(net);

	__le16 res = cpu_to_le16(val);



	netdev_dbg(dev->net,

		   "%s : phy_id=0x%02x, loc=0x%02x, val=0x%04x\n", __func__,

		   phy_id, loc, val);

	mutex_lock(&dev->phy_mutex);

	sr_set_sw_mii(dev);

	sr_write_cmd(dev, SR_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);

	sr_set_hw_mii(dev);

	mutex_unlock(&dev->phy_mutex);

}



/* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */

static u32 sr_get_phyid(struct usbnet *dev)

{

	int phy_reg;

	u32 phy_id;

	int i;



	/* Poll for the rare case the FW or phy isn't ready yet.  */

	for (i = 0; i < 100; i++) {

		phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID1);

		if (phy_reg != 0 && phy_reg != 0xFFFF)

			break;

		mdelay(1);

	}



	if (phy_reg <= 0 || phy_reg == 0xFFFF)

		return 0;



	phy_id = (phy_reg & 0xffff) << 16;



	phy_reg = sr_mdio_read(dev->net, dev->mii.phy_id, MII_PHYSID2);

	if (phy_reg < 0)

		return 0;



	phy_id |= (phy_reg & 0xffff);



	return phy_id;

}



static void

sr_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)

{

	struct usbnet *dev = netdev_priv(net);

	u8 opt;



	if (sr_read_cmd(dev, SR_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {

		wolinfo->supported = 0;

		wolinfo->wolopts = 0;

		return;

	}

	wolinfo->supported = WAKE_PHY | WAKE_MAGIC;

	wolinfo->wolopts = 0;

	if (opt & SR_MONITOR_LINK)

		wolinfo->wolopts |= WAKE_PHY;

	if (opt & SR_MONITOR_MAGIC)

		wolinfo->wolopts |= WAKE_MAGIC;

}



static int

sr_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 |= SR_MONITOR_LINK;

	if (wolinfo->wolopts & WAKE_MAGIC)

		opt |= SR_MONITOR_MAGIC;



	if (sr_write_cmd(dev, SR_CMD_WRITE_MONITOR_MODE,

			 opt, 0, 0, NULL) < 0)

		return -EINVAL;



	return 0;

}



static int sr_get_eeprom_len(struct net_device *net)

{

	struct usbnet *dev = netdev_priv(net);

	struct sr_data *data = (struct sr_data *)&dev->data;



	return data->eeprom_len;

}



static int sr_get_eeprom(struct net_device *net,

			      struct ethtool_eeprom *eeprom, u8 *data)

{

	struct usbnet *dev = netdev_priv(net);

	__le16 *ebuf = (__le16 *)data;

	int ret;

	int i;



	/* Crude hack to ensure that we don't overwrite memory

	 * if an odd length is supplied

	 */

	if (eeprom->len % 2)

		return -EINVAL;



	eeprom->magic = SR_EEPROM_MAGIC;



	/* sr9800 returns 2 bytes from eeprom on read */

	for (i = 0; i < eeprom->len / 2; i++) {

		ret = sr_read_cmd(dev, SR_CMD_READ_EEPROM, eeprom->offset + i,

				  0, 2, &ebuf[i]);

		if (ret < 0)

			return -EINVAL;

	}

	return 0;

}



static void sr_get_drvinfo(struct net_device *net,

				 struct ethtool_drvinfo *info)

{

	struct usbnet *dev = netdev_priv(net);

	struct sr_data *data = (struct sr_data *)&dev->data;



	/* Inherit standard device info */

	usbnet_get_drvinfo(net, info);

	strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));

	strncpy(info->version, DRIVER_VERSION, sizeof(info->version));

	info->eedump_len = data->eeprom_len;

}



static u32 sr_get_link(struct net_device *net)

{

	struct usbnet *dev = netdev_priv(net);



	return mii_link_ok(&dev->mii);

}



static int sr_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 int sr_set_mac_address(struct net_device *net, void *p)

{

	struct usbnet *dev = netdev_priv(net);

	struct sr_data *data = (struct sr_data *)&dev->data;

	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);



	/* We use the 20 byte dev->data

	 * for our 6 byte mac buffer

	 * to avoid allocating memory that

	 * is tricky to free later

	 */

	memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);

	sr_write_cmd_async(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,

			   data->mac_addr);



	return 0;

}



static const struct ethtool_ops sr9800_ethtool_ops = {

	.get_drvinfo	= sr_get_drvinfo,

	.get_link	= sr_get_link,

	.get_msglevel	= usbnet_get_msglevel,

	.set_msglevel	= usbnet_set_msglevel,

	.get_wol	= sr_get_wol,

	.set_wol	= sr_set_wol,

	.get_eeprom_len	= sr_get_eeprom_len,

	.get_eeprom	= sr_get_eeprom,

	.get_settings	= usbnet_get_settings,

	.set_settings	= usbnet_set_settings,

	.nway_reset	= usbnet_nway_reset,

};



static int sr9800_link_reset(struct usbnet *dev)

{

	struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };

	u16 mode;



	mii_check_media(&dev->mii, 1, 1);

	mii_ethtool_gset(&dev->mii, &ecmd);

	mode = SR9800_MEDIUM_DEFAULT;



	if (ethtool_cmd_speed(&ecmd) != SPEED_100)

		mode &= ~SR_MEDIUM_PS;



	if (ecmd.duplex != DUPLEX_FULL)

		mode &= ~SR_MEDIUM_FD;



	netdev_dbg(dev->net, "%s : speed: %u duplex: %d mode: 0x%04x\n",

		   __func__, ethtool_cmd_speed(&ecmd), ecmd.duplex, mode);



	sr_write_medium_mode(dev, mode);



	return 0;

}





static int sr9800_set_default_mode(struct usbnet *dev)

{

	u16 rx_ctl;

	int ret;



	sr_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);

	sr_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,

		      ADVERTISE_ALL | ADVERTISE_CSMA);

	mii_nway_restart(&dev->mii);



	ret = sr_write_medium_mode(dev, SR9800_MEDIUM_DEFAULT);

	if (ret < 0)

		goto out;



	ret = sr_write_cmd(dev, SR_CMD_WRITE_IPG012,

				SR9800_IPG0_DEFAULT | SR9800_IPG1_DEFAULT,

				SR9800_IPG2_DEFAULT, 0, NULL);

	if (ret < 0) {

		netdev_dbg(dev->net, "Write IPG,IPG1,IPG2 failed: %d\n", ret);

		goto out;

	}



	/* Set RX_CTL to default values with 2k buffer, and enable cactus */

	ret = sr_write_rx_ctl(dev, SR_DEFAULT_RX_CTL);

	if (ret < 0)

		goto out;



	rx_ctl = sr_read_rx_ctl(dev);

	netdev_dbg(dev->net, "RX_CTL is 0x%04x after all initializations\n",

		   rx_ctl);



	rx_ctl = sr_read_medium_status(dev);

	netdev_dbg(dev->net, "Medium Status:0x%04x after all initializations\n",

		   rx_ctl);



	return 0;

out:

	return ret;

}



static int sr9800_reset(struct usbnet *dev)

{

	struct sr_data *data = (struct sr_data *)&dev->data;

	int ret, embd_phy;

	u16 rx_ctl;



	ret = sr_write_gpio(dev,

			SR_GPIO_RSE | SR_GPIO_GPO_2 | SR_GPIO_GPO2EN, 5);

	if (ret < 0)

		goto out;



	embd_phy = ((sr_get_phy_addr(dev) & 0x1f) == 0x10 ? 1 : 0);



	ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);

	if (ret < 0) {

		netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);

		goto out;

	}



	ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_PRL);

	if (ret < 0)

		goto out;



	msleep(150);



	ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);

	if (ret < 0)

		goto out;



	msleep(150);



	if (embd_phy) {

		ret = sr_sw_reset(dev, SR_SWRESET_IPRL);

		if (ret < 0)

			goto out;

	} else {

		ret = sr_sw_reset(dev, SR_SWRESET_PRTE);

		if (ret < 0)

			goto out;

	}



	msleep(150);

	rx_ctl = sr_read_rx_ctl(dev);

	netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);

	ret = sr_write_rx_ctl(dev, 0x0000);

	if (ret < 0)

		goto out;



	rx_ctl = sr_read_rx_ctl(dev);

	netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);



	ret = sr_sw_reset(dev, SR_SWRESET_PRL);

	if (ret < 0)

		goto out;



	msleep(150);



	ret = sr_sw_reset(dev, SR_SWRESET_IPRL | SR_SWRESET_PRL);

	if (ret < 0)

		goto out;



	msleep(150);



	ret = sr9800_set_default_mode(dev);

	if (ret < 0)

		goto out;



	/* Rewrite MAC address */

	memcpy(data->mac_addr, dev->net->dev_addr, ETH_ALEN);

	ret = sr_write_cmd(dev, SR_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,

							data->mac_addr);

	if (ret < 0)

		goto out;



	return 0;



out:

	return ret;

}



static const struct net_device_ops sr9800_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		= usbnet_change_mtu,

	.ndo_set_mac_address	= sr_set_mac_address,

	.ndo_validate_addr	= eth_validate_addr,

	.ndo_do_ioctl		= sr_ioctl,

	.ndo_set_rx_mode        = sr_set_multicast,

};



static int sr9800_phy_powerup(struct usbnet *dev)

{

	int ret;



	/* set the embedded Ethernet PHY in power-down state */

	ret = sr_sw_reset(dev, SR_SWRESET_IPPD | SR_SWRESET_IPRL);

	if (ret < 0) {

		netdev_err(dev->net, "Failed to power down PHY : %d\n", ret);

		return ret;

	}

	msleep(20);



	/* set the embedded Ethernet PHY in power-up state */

	ret = sr_sw_reset(dev, SR_SWRESET_IPRL);

	if (ret < 0) {

		netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);

		return ret;

	}

	msleep(600);



	/* set the embedded Ethernet PHY in reset state */

	ret = sr_sw_reset(dev, SR_SWRESET_CLEAR);

	if (ret < 0) {

		netdev_err(dev->net, "Failed to power up PHY: %d\n", ret);

		return ret;

	}

	msleep(20);



	/* set the embedded Ethernet PHY in power-up state */

	ret = sr_sw_reset(dev, SR_SWRESET_IPRL);

	if (ret < 0) {

		netdev_err(dev->net, "Failed to reset PHY: %d\n", ret);

		return ret;

	}



	return 0;

}



static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)

{

	struct sr_data *data = (struct sr_data *)&dev->data;

	u16 led01_mux, led23_mux;

	int ret, embd_phy;

	u32 phyid;

	u16 rx_ctl;



	data->eeprom_len = SR9800_EEPROM_LEN;



	usbnet_get_endpoints(dev, intf);



	/* LED Setting Rule :

	 * AABB:CCDD

	 * AA : MFA0(LED0)

	 * BB : MFA1(LED1)

	 * CC : MFA2(LED2), Reserved for SR9800

	 * DD : MFA3(LED3), Reserved for SR9800

	 */

	led01_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_LINK;

	led23_mux = (SR_LED_MUX_LINK_ACTIVE << 8) | SR_LED_MUX_TX_ACTIVE;

	ret = sr_write_cmd(dev, SR_CMD_LED_MUX, led01_mux, led23_mux, 0, NULL);

	if (ret < 0) {

			netdev_err(dev->net, "set LINK LED failed : %d\n", ret);

			goto out;

	}



	/* Get the MAC address */

	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN,

			  dev->net->dev_addr);

	if (ret < 0) {

		netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);

		return ret;

	}

	netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);



	/* Initialize MII structure */

	dev->mii.dev = dev->net;

	dev->mii.mdio_read = sr_mdio_read;

	dev->mii.mdio_write = sr_mdio_write;

	dev->mii.phy_id_mask = 0x1f;

	dev->mii.reg_num_mask = 0x1f;

	dev->mii.phy_id = sr_get_phy_addr(dev);



	dev->net->netdev_ops = &sr9800_netdev_ops;

	dev->net->ethtool_ops = &sr9800_ethtool_ops;



	embd_phy = ((dev->mii.phy_id & 0x1f) == 0x10 ? 1 : 0);

	/* Reset the PHY to normal operation mode */

	ret = sr_write_cmd(dev, SR_CMD_SW_PHY_SELECT, embd_phy, 0, 0, NULL);

	if (ret < 0) {

		netdev_dbg(dev->net, "Select PHY #1 failed: %d\n", ret);

		return ret;

	}



	/* Init PHY routine */

	ret = sr9800_phy_powerup(dev);

	if (ret < 0)

		goto out;



	rx_ctl = sr_read_rx_ctl(dev);

	netdev_dbg(dev->net, "RX_CTL is 0x%04x after software reset\n", rx_ctl);

	ret = sr_write_rx_ctl(dev, 0x0000);

	if (ret < 0)

		goto out;



	rx_ctl = sr_read_rx_ctl(dev);

	netdev_dbg(dev->net, "RX_CTL is 0x%04x setting to 0x0000\n", rx_ctl);



	/* Read PHYID register *AFTER* the PHY was reset properly */

	phyid = sr_get_phyid(dev);

	netdev_dbg(dev->net, "PHYID=0x%08x\n", phyid);



	/* medium mode setting */

	ret = sr9800_set_default_mode(dev);

	if (ret < 0)

		goto out;



	if (dev->udev->speed == USB_SPEED_HIGH) {

		ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].byte_cnt,

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].threshold,

			0, NULL);

		if (ret < 0) {

			netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);

			goto out;

		}

		dev->rx_urb_size =

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_4K].size;

	} else {

		ret = sr_write_cmd(dev, SR_CMD_BULKIN_SIZE,

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].byte_cnt,

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].threshold,

			0, NULL);

		if (ret < 0) {

			netdev_err(dev->net, "Reset RX_CTL failed: %d\n", ret);

			goto out;

		}

		dev->rx_urb_size =

			SR9800_BULKIN_SIZE[SR9800_MAX_BULKIN_2K].size;

	}

	netdev_dbg(dev->net, "%s : setting rx_urb_size with : %ld\n", __func__,

		   dev->rx_urb_size);

	return 0;



out:

	return ret;

}



static const struct driver_info sr9800_driver_info = {

	.description	= "CoreChip SR9800 USB 2.0 Ethernet",

	.bind		= sr9800_bind,

	.status		= sr_status,

	.link_reset	= sr9800_link_reset,

	.reset		= sr9800_reset,

	.flags		= DRIVER_FLAG,

	.rx_fixup	= sr_rx_fixup,

	.tx_fixup	= sr_tx_fixup,

};



static const struct usb_device_id	products[] = {

	{

		USB_DEVICE(0x0fe6, 0x9800),	/* SR9800 Device  */

		.driver_info = (unsigned long) &sr9800_driver_info,

	},

	{},		/* END */

};



MODULE_DEVICE_TABLE(usb, products);



static struct usb_driver sr_driver = {

	.name		= DRIVER_NAME,

	.id_table	= products,

	.probe		= usbnet_probe,

	.suspend	= usbnet_suspend,

	.resume		= usbnet_resume,

	.disconnect	= usbnet_disconnect,

	.supports_autosuspend = 1,

};



module_usb_driver(sr_driver);



MODULE_AUTHOR("Liu Junliang <liujunliang_ljl@163.com");

MODULE_VERSION(DRIVER_VERSION);

MODULE_DESCRIPTION("SR9800 USB 2.0 USB2NET Dev : http://www.corechip-sz.com");

MODULE_LICENSE("GPL");

drivers/net/usb/sr9800.h

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