forked from Minki/linux
4180442058
Conflicts: drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c net/ipv4/tcp_metrics.c Overlapping changes between the "don't create two tcp metrics objects with the same key" race fix in net and the addition of the destination address in the lookup key in net-next. Minor overlapping changes in bnx2x driver. Signed-off-by: David S. Miller <davem@davemloft.net>
648 lines
15 KiB
C
648 lines
15 KiB
C
/*
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* Davicom DM96xx USB 10/100Mbps ethernet devices
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*
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* Peter Korsgaard <jacmet@sunsite.dk>
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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//#define DEBUG
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/stddef.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <linux/usb.h>
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#include <linux/crc32.h>
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#include <linux/usb/usbnet.h>
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#include <linux/slab.h>
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/* datasheet:
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http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
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*/
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/* control requests */
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#define DM_READ_REGS 0x00
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#define DM_WRITE_REGS 0x01
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#define DM_READ_MEMS 0x02
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#define DM_WRITE_REG 0x03
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#define DM_WRITE_MEMS 0x05
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#define DM_WRITE_MEM 0x07
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/* registers */
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#define DM_NET_CTRL 0x00
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#define DM_RX_CTRL 0x05
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#define DM_SHARED_CTRL 0x0b
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#define DM_SHARED_ADDR 0x0c
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#define DM_SHARED_DATA 0x0d /* low + high */
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#define DM_PHY_ADDR 0x10 /* 6 bytes */
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#define DM_MCAST_ADDR 0x16 /* 8 bytes */
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#define DM_GPR_CTRL 0x1e
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#define DM_GPR_DATA 0x1f
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#define DM_CHIP_ID 0x2c
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#define DM_MODE_CTRL 0x91 /* only on dm9620 */
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/* chip id values */
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#define ID_DM9601 0
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#define ID_DM9620 1
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#define DM_MAX_MCAST 64
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#define DM_MCAST_SIZE 8
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#define DM_EEPROM_LEN 256
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#define DM_TX_OVERHEAD 2 /* 2 byte header */
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#define DM_RX_OVERHEAD 7 /* 3 byte header + 4 byte crc tail */
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#define DM_TIMEOUT 1000
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static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
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{
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int err;
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err = usbnet_read_cmd(dev, DM_READ_REGS,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, reg, data, length);
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if(err != length && err >= 0)
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err = -EINVAL;
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return err;
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}
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static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
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{
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return dm_read(dev, reg, 1, value);
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}
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static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
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{
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int err;
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err = usbnet_write_cmd(dev, DM_WRITE_REGS,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, reg, data, length);
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if (err >= 0 && err < length)
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err = -EINVAL;
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return err;
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}
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static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
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{
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return usbnet_write_cmd(dev, DM_WRITE_REG,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, reg, NULL, 0);
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}
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static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
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{
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usbnet_write_cmd_async(dev, DM_WRITE_REGS,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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0, reg, data, length);
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}
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static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
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{
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usbnet_write_cmd_async(dev, DM_WRITE_REG,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, reg, NULL, 0);
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}
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static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
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{
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int ret, i;
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mutex_lock(&dev->phy_mutex);
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dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
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dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
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for (i = 0; i < DM_TIMEOUT; i++) {
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u8 tmp = 0;
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udelay(1);
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ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
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if (ret < 0)
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goto out;
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/* ready */
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if ((tmp & 1) == 0)
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break;
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}
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if (i == DM_TIMEOUT) {
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netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom");
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ret = -EIO;
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goto out;
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}
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dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
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ret = dm_read(dev, DM_SHARED_DATA, 2, value);
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netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n",
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phy, reg, *value, ret);
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out:
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mutex_unlock(&dev->phy_mutex);
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return ret;
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}
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static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value)
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{
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int ret, i;
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mutex_lock(&dev->phy_mutex);
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ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
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if (ret < 0)
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goto out;
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dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
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dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12);
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for (i = 0; i < DM_TIMEOUT; i++) {
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u8 tmp = 0;
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udelay(1);
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ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
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if (ret < 0)
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goto out;
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/* ready */
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if ((tmp & 1) == 0)
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break;
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}
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if (i == DM_TIMEOUT) {
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netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom");
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ret = -EIO;
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goto out;
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}
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dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
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out:
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mutex_unlock(&dev->phy_mutex);
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return ret;
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}
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static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
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{
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return dm_read_shared_word(dev, 0, offset, value);
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}
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static int dm9601_get_eeprom_len(struct net_device *dev)
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{
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return DM_EEPROM_LEN;
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}
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static int dm9601_get_eeprom(struct net_device *net,
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struct ethtool_eeprom *eeprom, u8 * data)
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{
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struct usbnet *dev = netdev_priv(net);
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__le16 *ebuf = (__le16 *) data;
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int i;
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/* access is 16bit */
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if ((eeprom->offset % 2) || (eeprom->len % 2))
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return -EINVAL;
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for (i = 0; i < eeprom->len / 2; i++) {
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if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
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&ebuf[i]) < 0)
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return -EINVAL;
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}
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return 0;
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}
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static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
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{
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struct usbnet *dev = netdev_priv(netdev);
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__le16 res;
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if (phy_id) {
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netdev_dbg(dev->net, "Only internal phy supported\n");
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return 0;
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}
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dm_read_shared_word(dev, 1, loc, &res);
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netdev_dbg(dev->net,
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"dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
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phy_id, loc, le16_to_cpu(res));
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return le16_to_cpu(res);
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}
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static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
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int val)
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{
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struct usbnet *dev = netdev_priv(netdev);
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__le16 res = cpu_to_le16(val);
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if (phy_id) {
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netdev_dbg(dev->net, "Only internal phy supported\n");
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return;
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}
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netdev_dbg(dev->net, "dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
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phy_id, loc, val);
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dm_write_shared_word(dev, 1, loc, res);
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}
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static void dm9601_get_drvinfo(struct net_device *net,
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struct ethtool_drvinfo *info)
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{
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/* Inherit standard device info */
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usbnet_get_drvinfo(net, info);
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info->eedump_len = DM_EEPROM_LEN;
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}
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static u32 dm9601_get_link(struct net_device *net)
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{
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struct usbnet *dev = netdev_priv(net);
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return mii_link_ok(&dev->mii);
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}
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static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
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{
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struct usbnet *dev = netdev_priv(net);
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return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
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}
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static const struct ethtool_ops dm9601_ethtool_ops = {
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.get_drvinfo = dm9601_get_drvinfo,
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.get_link = dm9601_get_link,
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.get_msglevel = usbnet_get_msglevel,
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.set_msglevel = usbnet_set_msglevel,
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.get_eeprom_len = dm9601_get_eeprom_len,
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.get_eeprom = dm9601_get_eeprom,
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.get_settings = usbnet_get_settings,
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.set_settings = usbnet_set_settings,
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.nway_reset = usbnet_nway_reset,
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};
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static void dm9601_set_multicast(struct net_device *net)
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{
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struct usbnet *dev = netdev_priv(net);
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/* We use the 20 byte dev->data for our 8 byte filter buffer
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* to avoid allocating memory that is tricky to free later */
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u8 *hashes = (u8 *) & dev->data;
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u8 rx_ctl = 0x31;
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memset(hashes, 0x00, DM_MCAST_SIZE);
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hashes[DM_MCAST_SIZE - 1] |= 0x80; /* broadcast address */
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if (net->flags & IFF_PROMISC) {
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rx_ctl |= 0x02;
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} else if (net->flags & IFF_ALLMULTI ||
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netdev_mc_count(net) > DM_MAX_MCAST) {
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rx_ctl |= 0x08;
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} else if (!netdev_mc_empty(net)) {
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struct netdev_hw_addr *ha;
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netdev_for_each_mc_addr(ha, net) {
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u32 crc = ether_crc(ETH_ALEN, ha->addr) >> 26;
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hashes[crc >> 3] |= 1 << (crc & 0x7);
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}
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}
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dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
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dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
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}
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static void __dm9601_set_mac_address(struct usbnet *dev)
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{
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dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
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}
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static int dm9601_set_mac_address(struct net_device *net, void *p)
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{
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struct sockaddr *addr = p;
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struct usbnet *dev = netdev_priv(net);
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if (!is_valid_ether_addr(addr->sa_data)) {
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dev_err(&net->dev, "not setting invalid mac address %pM\n",
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addr->sa_data);
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return -EINVAL;
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}
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memcpy(net->dev_addr, addr->sa_data, net->addr_len);
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__dm9601_set_mac_address(dev);
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return 0;
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}
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static const struct net_device_ops dm9601_netdev_ops = {
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.ndo_open = usbnet_open,
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.ndo_stop = usbnet_stop,
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.ndo_start_xmit = usbnet_start_xmit,
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.ndo_tx_timeout = usbnet_tx_timeout,
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.ndo_change_mtu = usbnet_change_mtu,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_do_ioctl = dm9601_ioctl,
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.ndo_set_rx_mode = dm9601_set_multicast,
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.ndo_set_mac_address = dm9601_set_mac_address,
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};
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static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
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{
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int ret;
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u8 mac[ETH_ALEN], id;
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ret = usbnet_get_endpoints(dev, intf);
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if (ret)
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goto out;
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dev->net->netdev_ops = &dm9601_netdev_ops;
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dev->net->ethtool_ops = &dm9601_ethtool_ops;
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dev->net->hard_header_len += DM_TX_OVERHEAD;
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dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
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/* dm9620/21a require room for 4 byte padding, even in dm9601
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* mode, so we need +1 to be able to receive full size
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* ethernet frames.
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*/
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dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1;
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dev->mii.dev = dev->net;
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dev->mii.mdio_read = dm9601_mdio_read;
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dev->mii.mdio_write = dm9601_mdio_write;
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dev->mii.phy_id_mask = 0x1f;
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dev->mii.reg_num_mask = 0x1f;
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/* reset */
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dm_write_reg(dev, DM_NET_CTRL, 1);
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udelay(20);
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/* read MAC */
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if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, mac) < 0) {
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printk(KERN_ERR "Error reading MAC address\n");
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ret = -ENODEV;
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goto out;
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}
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/*
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* Overwrite the auto-generated address only with good ones.
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*/
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if (is_valid_ether_addr(mac))
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memcpy(dev->net->dev_addr, mac, ETH_ALEN);
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else {
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printk(KERN_WARNING
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"dm9601: No valid MAC address in EEPROM, using %pM\n",
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dev->net->dev_addr);
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__dm9601_set_mac_address(dev);
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}
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if (dm_read_reg(dev, DM_CHIP_ID, &id) < 0) {
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netdev_err(dev->net, "Error reading chip ID\n");
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ret = -ENODEV;
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goto out;
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}
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/* put dm9620 devices in dm9601 mode */
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if (id == ID_DM9620) {
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u8 mode;
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if (dm_read_reg(dev, DM_MODE_CTRL, &mode) < 0) {
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netdev_err(dev->net, "Error reading MODE_CTRL\n");
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ret = -ENODEV;
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goto out;
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}
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dm_write_reg(dev, DM_MODE_CTRL, mode & 0x7f);
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}
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/* power up phy */
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dm_write_reg(dev, DM_GPR_CTRL, 1);
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dm_write_reg(dev, DM_GPR_DATA, 0);
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/* receive broadcast packets */
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dm9601_set_multicast(dev->net);
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dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
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dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
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ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
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mii_nway_restart(&dev->mii);
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out:
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return ret;
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}
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static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
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{
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u8 status;
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int len;
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/* format:
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b1: rx status
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b2: packet length (incl crc) low
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b3: packet length (incl crc) high
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b4..n-4: packet data
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bn-3..bn: ethernet crc
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*/
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if (unlikely(skb->len < DM_RX_OVERHEAD)) {
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dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
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return 0;
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}
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status = skb->data[0];
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len = (skb->data[1] | (skb->data[2] << 8)) - 4;
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if (unlikely(status & 0xbf)) {
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if (status & 0x01) dev->net->stats.rx_fifo_errors++;
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if (status & 0x02) dev->net->stats.rx_crc_errors++;
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if (status & 0x04) dev->net->stats.rx_frame_errors++;
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if (status & 0x20) dev->net->stats.rx_missed_errors++;
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if (status & 0x90) dev->net->stats.rx_length_errors++;
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return 0;
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}
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skb_pull(skb, 3);
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skb_trim(skb, len);
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return 1;
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}
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static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
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gfp_t flags)
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{
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int len, pad;
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/* format:
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b1: packet length low
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b2: packet length high
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b3..n: packet data
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*/
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len = skb->len + DM_TX_OVERHEAD;
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/* workaround for dm962x errata with tx fifo getting out of
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* sync if a USB bulk transfer retry happens right after a
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* packet with odd / maxpacket length by adding up to 3 bytes
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* padding.
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*/
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while ((len & 1) || !(len % dev->maxpacket))
|
|
len++;
|
|
|
|
len -= DM_TX_OVERHEAD; /* hw header doesn't count as part of length */
|
|
pad = len - skb->len;
|
|
|
|
if (skb_headroom(skb) < DM_TX_OVERHEAD || skb_tailroom(skb) < pad) {
|
|
struct sk_buff *skb2;
|
|
|
|
skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, pad, flags);
|
|
dev_kfree_skb_any(skb);
|
|
skb = skb2;
|
|
if (!skb)
|
|
return NULL;
|
|
}
|
|
|
|
__skb_push(skb, DM_TX_OVERHEAD);
|
|
|
|
if (pad) {
|
|
memset(skb->data + skb->len, 0, pad);
|
|
__skb_put(skb, pad);
|
|
}
|
|
|
|
skb->data[0] = len;
|
|
skb->data[1] = len >> 8;
|
|
|
|
return skb;
|
|
}
|
|
|
|
static void dm9601_status(struct usbnet *dev, struct urb *urb)
|
|
{
|
|
int link;
|
|
u8 *buf;
|
|
|
|
/* format:
|
|
b0: net status
|
|
b1: tx status 1
|
|
b2: tx status 2
|
|
b3: rx status
|
|
b4: rx overflow
|
|
b5: rx count
|
|
b6: tx count
|
|
b7: gpr
|
|
*/
|
|
|
|
if (urb->actual_length < 8)
|
|
return;
|
|
|
|
buf = urb->transfer_buffer;
|
|
|
|
link = !!(buf[0] & 0x40);
|
|
if (netif_carrier_ok(dev->net) != link) {
|
|
usbnet_link_change(dev, link, 1);
|
|
netdev_dbg(dev->net, "Link Status is: %d\n", link);
|
|
}
|
|
}
|
|
|
|
static int dm9601_link_reset(struct usbnet *dev)
|
|
{
|
|
struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
|
|
|
|
mii_check_media(&dev->mii, 1, 1);
|
|
mii_ethtool_gset(&dev->mii, &ecmd);
|
|
|
|
netdev_dbg(dev->net, "link_reset() speed: %u duplex: %d\n",
|
|
ethtool_cmd_speed(&ecmd), ecmd.duplex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct driver_info dm9601_info = {
|
|
.description = "Davicom DM96xx USB 10/100 Ethernet",
|
|
.flags = FLAG_ETHER | FLAG_LINK_INTR,
|
|
.bind = dm9601_bind,
|
|
.rx_fixup = dm9601_rx_fixup,
|
|
.tx_fixup = dm9601_tx_fixup,
|
|
.status = dm9601_status,
|
|
.link_reset = dm9601_link_reset,
|
|
.reset = dm9601_link_reset,
|
|
};
|
|
|
|
static const struct usb_device_id products[] = {
|
|
{
|
|
USB_DEVICE(0x07aa, 0x9601), /* Corega FEther USB-TXC */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x9601), /* Davicom USB-100 */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x6688), /* ZT6688 USB NIC */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x0268), /* ShanTou ST268 USB NIC */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x8515), /* ADMtek ADM8515 USB NIC */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a47, 0x9601), /* Hirose USB-100 */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0fe6, 0x8101), /* DM9601 USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0fe6, 0x9700), /* DM9601 USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x9000), /* DM9000E */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x9620), /* DM9620 USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x9621), /* DM9621A USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x9622), /* DM9622 USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x0269), /* DM962OA USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{
|
|
USB_DEVICE(0x0a46, 0x1269), /* DM9621A USB to Fast Ethernet Adapter */
|
|
.driver_info = (unsigned long)&dm9601_info,
|
|
},
|
|
{}, // END
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, products);
|
|
|
|
static struct usb_driver dm9601_driver = {
|
|
.name = "dm9601",
|
|
.id_table = products,
|
|
.probe = usbnet_probe,
|
|
.disconnect = usbnet_disconnect,
|
|
.suspend = usbnet_suspend,
|
|
.resume = usbnet_resume,
|
|
.disable_hub_initiated_lpm = 1,
|
|
};
|
|
|
|
module_usb_driver(dm9601_driver);
|
|
|
|
MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
|
|
MODULE_DESCRIPTION("Davicom DM96xx USB 10/100 ethernet devices");
|
|
MODULE_LICENSE("GPL");
|