diff options
| -rw-r--r-- | drivers/net/usb/ax88179_178a.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c index 93044cf1417a..b05bb11a02cb 100644 --- a/drivers/net/usb/ax88179_178a.c +++ b/drivers/net/usb/ax88179_178a.c @@ -31,6 +31,7 @@ #define AX_ACCESS_PHY 0x02 #define AX_ACCESS_EEPROM 0x04 #define AX_ACCESS_EFUS 0x05 +#define AX_RELOAD_EEPROM_EFUSE 0x06 #define AX_PAUSE_WATERLVL_HIGH 0x54 #define AX_PAUSE_WATERLVL_LOW 0x55 @@ -611,6 +612,81 @@ ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, return 0; } +static int +ax88179_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, + u8 *data) +{ + struct usbnet *dev = netdev_priv(net); + u16 *eeprom_buff; + int first_word; + int last_word; + int ret; + int i; + + netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n", + eeprom->len, eeprom->offset, eeprom->magic); + + if (eeprom->len == 0) + return -EINVAL; + + if (eeprom->magic != AX88179_EEPROM_MAGIC) + return -EINVAL; + + first_word = eeprom->offset >> 1; + last_word = (eeprom->offset + eeprom->len - 1) >> 1; + + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); + if (!eeprom_buff) + return -ENOMEM; + + /* align data to 16 bit boundaries, read the missing data from + the EEPROM */ + if (eeprom->offset & 1) { + ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, first_word, 1, 2, + &eeprom_buff[0]); + if (ret < 0) { + netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word); + goto free; + } + } + + if ((eeprom->offset + eeprom->len) & 1) { + ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, last_word, 1, 2, + &eeprom_buff[last_word - first_word]); + if (ret < 0) { + netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word); + goto free; + } + } + + memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len); + + for (i = first_word; i <= last_word; i++) { + netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n", + i, eeprom_buff[i - first_word]); + ret = ax88179_write_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2, + &eeprom_buff[i - first_word]); + if (ret < 0) { + netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", i); + goto free; + } + msleep(20); + } + + /* reload EEPROM data */ + ret = ax88179_write_cmd(dev, AX_RELOAD_EEPROM_EFUSE, 0x0000, 0, 0, NULL); + if (ret < 0) { + netdev_err(net, "Failed to reload EEPROM data\n"); + goto free; + } + + ret = 0; +free: + kfree(eeprom_buff); + return ret; +} + static int ax88179_get_link_ksettings(struct net_device *net, struct ethtool_link_ksettings *cmd) { @@ -822,6 +898,7 @@ static const struct ethtool_ops ax88179_ethtool_ops = { .set_wol = ax88179_set_wol, .get_eeprom_len = ax88179_get_eeprom_len, .get_eeprom = ax88179_get_eeprom, + .set_eeprom = ax88179_set_eeprom, .get_eee = ax88179_get_eee, .set_eee = ax88179_set_eee, .nway_reset = usbnet_nway_reset, |