diff options
Diffstat (limited to 'drivers/net/ethernet/wangxun/libwx/wx_hw.c')
| -rw-r--r-- | drivers/net/ethernet/wangxun/libwx/wx_hw.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c index 85dc16faca54..f0063d569c80 100644 --- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c +++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c @@ -12,6 +12,98 @@ #include "wx_lib.h" #include "wx_hw.h" +static int wx_phy_read_reg_mdi(struct mii_bus *bus, int phy_addr, int devnum, int regnum) +{ + struct wx *wx = bus->priv; + u32 command, val; + int ret; + + /* setup and write the address cycle command */ + command = WX_MSCA_RA(regnum) | + WX_MSCA_PA(phy_addr) | + WX_MSCA_DA(devnum); + wr32(wx, WX_MSCA, command); + + command = WX_MSCC_CMD(WX_MSCA_CMD_READ) | WX_MSCC_BUSY; + if (wx->mac.type == wx_mac_em) + command |= WX_MDIO_CLK(6); + wr32(wx, WX_MSCC, command); + + /* wait to complete */ + ret = read_poll_timeout(rd32, val, !(val & WX_MSCC_BUSY), 1000, + 100000, false, wx, WX_MSCC); + if (ret) { + wx_err(wx, "Mdio read c22 command did not complete.\n"); + return ret; + } + + return (u16)rd32(wx, WX_MSCC); +} + +static int wx_phy_write_reg_mdi(struct mii_bus *bus, int phy_addr, + int devnum, int regnum, u16 value) +{ + struct wx *wx = bus->priv; + u32 command, val; + int ret; + + /* setup and write the address cycle command */ + command = WX_MSCA_RA(regnum) | + WX_MSCA_PA(phy_addr) | + WX_MSCA_DA(devnum); + wr32(wx, WX_MSCA, command); + + command = value | WX_MSCC_CMD(WX_MSCA_CMD_WRITE) | WX_MSCC_BUSY; + if (wx->mac.type == wx_mac_em) + command |= WX_MDIO_CLK(6); + wr32(wx, WX_MSCC, command); + + /* wait to complete */ + ret = read_poll_timeout(rd32, val, !(val & WX_MSCC_BUSY), 1000, + 100000, false, wx, WX_MSCC); + if (ret) + wx_err(wx, "Mdio write c22 command did not complete.\n"); + + return ret; +} + +int wx_phy_read_reg_mdi_c22(struct mii_bus *bus, int phy_addr, int regnum) +{ + struct wx *wx = bus->priv; + + wr32(wx, WX_MDIO_CLAUSE_SELECT, 0xF); + return wx_phy_read_reg_mdi(bus, phy_addr, 0, regnum); +} +EXPORT_SYMBOL(wx_phy_read_reg_mdi_c22); + +int wx_phy_write_reg_mdi_c22(struct mii_bus *bus, int phy_addr, int regnum, u16 value) +{ + struct wx *wx = bus->priv; + + wr32(wx, WX_MDIO_CLAUSE_SELECT, 0xF); + return wx_phy_write_reg_mdi(bus, phy_addr, 0, regnum, value); +} +EXPORT_SYMBOL(wx_phy_write_reg_mdi_c22); + +int wx_phy_read_reg_mdi_c45(struct mii_bus *bus, int phy_addr, int devnum, int regnum) +{ + struct wx *wx = bus->priv; + + wr32(wx, WX_MDIO_CLAUSE_SELECT, 0); + return wx_phy_read_reg_mdi(bus, phy_addr, devnum, regnum); +} +EXPORT_SYMBOL(wx_phy_read_reg_mdi_c45); + +int wx_phy_write_reg_mdi_c45(struct mii_bus *bus, int phy_addr, + int devnum, int regnum, u16 value) +{ + struct wx *wx = bus->priv; + + wr32(wx, WX_MDIO_CLAUSE_SELECT, 0); + return wx_phy_write_reg_mdi(bus, phy_addr, devnum, regnum, value); +} +EXPORT_SYMBOL(wx_phy_write_reg_mdi_c45); + static void wx_intr_disable(struct wx *wx, u64 qmask) { u32 mask; |