diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/smsc9420.c | 121 | ||||
| -rw-r--r-- | drivers/net/smsc9420.h | 3 |
2 files changed, 124 insertions, 0 deletions
diff --git a/drivers/net/smsc9420.c b/drivers/net/smsc9420.c index 80dab8bea76c..2a8e9b71de92 100644 --- a/drivers/net/smsc9420.c +++ b/drivers/net/smsc9420.c @@ -293,6 +293,124 @@ static int smsc9420_ethtool_nway_reset(struct net_device *netdev) return phy_start_aneg(pd->phy_dev); } +static void smsc9420_eeprom_enable_access(struct smsc9420_pdata *pd) +{ + unsigned int temp = smsc9420_reg_read(pd, GPIO_CFG); + temp &= ~GPIO_CFG_EEPR_EN_; + smsc9420_reg_write(pd, GPIO_CFG, temp); + msleep(1); +} + +static int smsc9420_eeprom_send_cmd(struct smsc9420_pdata *pd, u32 op) +{ + int timeout = 100; + u32 e2cmd; + + smsc_dbg(HW, "op 0x%08x", op); + if (smsc9420_reg_read(pd, E2P_CMD) & E2P_CMD_EPC_BUSY_) { + smsc_warn(HW, "Busy at start"); + return -EBUSY; + } + + e2cmd = op | E2P_CMD_EPC_BUSY_; + smsc9420_reg_write(pd, E2P_CMD, e2cmd); + + do { + msleep(1); + e2cmd = smsc9420_reg_read(pd, E2P_CMD); + } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (timeout--)); + + if (!timeout) { + smsc_info(HW, "TIMED OUT"); + return -EAGAIN; + } + + if (e2cmd & E2P_CMD_EPC_TIMEOUT_) { + smsc_info(HW, "Error occured during eeprom operation"); + return -EINVAL; + } + + return 0; +} + +static int smsc9420_eeprom_read_location(struct smsc9420_pdata *pd, + u8 address, u8 *data) +{ + u32 op = E2P_CMD_EPC_CMD_READ_ | address; + int ret; + + smsc_dbg(HW, "address 0x%x", address); + ret = smsc9420_eeprom_send_cmd(pd, op); + + if (!ret) + data[address] = smsc9420_reg_read(pd, E2P_DATA); + + return ret; +} + +static int smsc9420_eeprom_write_location(struct smsc9420_pdata *pd, + u8 address, u8 data) +{ + u32 op = E2P_CMD_EPC_CMD_ERASE_ | address; + int ret; + + smsc_dbg(HW, "address 0x%x, data 0x%x", address, data); + ret = smsc9420_eeprom_send_cmd(pd, op); + + if (!ret) { + op = E2P_CMD_EPC_CMD_WRITE_ | address; + smsc9420_reg_write(pd, E2P_DATA, (u32)data); + ret = smsc9420_eeprom_send_cmd(pd, op); + } + + return ret; +} + +static int smsc9420_ethtool_get_eeprom_len(struct net_device *dev) +{ + return SMSC9420_EEPROM_SIZE; +} + +static int smsc9420_ethtool_get_eeprom(struct net_device *dev, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct smsc9420_pdata *pd = netdev_priv(dev); + u8 eeprom_data[SMSC9420_EEPROM_SIZE]; + int len, i; + + smsc9420_eeprom_enable_access(pd); + + len = min(eeprom->len, SMSC9420_EEPROM_SIZE); + for (i = 0; i < len; i++) { + int ret = smsc9420_eeprom_read_location(pd, i, eeprom_data); + if (ret < 0) { + eeprom->len = 0; + return ret; + } + } + + memcpy(data, &eeprom_data[eeprom->offset], len); + eeprom->len = len; + return 0; +} + +static int smsc9420_ethtool_set_eeprom(struct net_device *dev, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct smsc9420_pdata *pd = netdev_priv(dev); + int ret; + + smsc9420_eeprom_enable_access(pd); + smsc9420_eeprom_send_cmd(pd, E2P_CMD_EPC_CMD_EWEN_); + ret = smsc9420_eeprom_write_location(pd, eeprom->offset, *data); + smsc9420_eeprom_send_cmd(pd, E2P_CMD_EPC_CMD_EWDS_); + + /* Single byte write, according to man page */ + eeprom->len = 1; + + return ret; +} + static const struct ethtool_ops smsc9420_ethtool_ops = { .get_settings = smsc9420_ethtool_get_settings, .set_settings = smsc9420_ethtool_set_settings, @@ -301,6 +419,9 @@ static const struct ethtool_ops smsc9420_ethtool_ops = { .set_msglevel = smsc9420_ethtool_set_msglevel, .nway_reset = smsc9420_ethtool_nway_reset, .get_link = ethtool_op_get_link, + .get_eeprom_len = smsc9420_ethtool_get_eeprom_len, + .get_eeprom = smsc9420_ethtool_get_eeprom, + .set_eeprom = smsc9420_ethtool_set_eeprom, }; /* Sets the device MAC address to dev_addr */ diff --git a/drivers/net/smsc9420.h b/drivers/net/smsc9420.h index afda2d249eb6..80c426dc4325 100644 --- a/drivers/net/smsc9420.h +++ b/drivers/net/smsc9420.h @@ -43,6 +43,8 @@ #define LAN_REGISTER_EXTENT (0x400) +#define SMSC9420_EEPROM_SIZE ((u32)11) + #define FLOW_CTRL_TX (1) #define FLOW_CTRL_RX (2) @@ -238,6 +240,7 @@ #define GPIO_CFG_LED_3_ (0x40000000) #define GPIO_CFG_LED_2_ (0x20000000) #define GPIO_CFG_LED_1_ (0x10000000) +#define GPIO_CFG_EEPR_EN_ (0x00700000) #define GPT_CFG (0xD4) #define GPT_CFG_TIMER_EN_ (0x20000000) |