diff options
Diffstat (limited to 'drivers/eepro100.c')
| -rw-r--r-- | drivers/eepro100.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/eepro100.c b/drivers/eepro100.c index 906159ee3..9db7bd80c 100644 --- a/drivers/eepro100.c +++ b/drivers/eepro100.c @@ -271,6 +271,47 @@ static inline void OUTL (struct eth_device *dev, int command, u_long addr) *(volatile u32 *) ((addr + dev->iobase)) = cpu_to_le32 (command); } +#if defined (CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII) +static inline int INL (struct eth_device *dev, u_long addr) +{ + return le32_to_cpu (*(volatile u32 *) (addr + dev->iobase)); +} + +int miiphy_read (unsigned char addr, + unsigned char reg, + unsigned short *value) +{ + int cmd = (2 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16); + + struct eth_device *dev = eth_get_dev (); + + OUTL (dev, cmd, SCBCtrlMDI); + + do { + cmd = INL (dev, SCBCtrlMDI); + } while (!(cmd & (1 << 28))); + + *value = (unsigned short) (cmd & 0xffff); + + return 0; +} + +int miiphy_write (unsigned char addr, + unsigned char reg, + unsigned short value) +{ + int cmd = (1 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16); + + struct eth_device *dev = eth_get_dev (); + + OUTL (dev, cmd | value, SCBCtrlMDI); + + while (!(INL (dev, SCBCtrlMDI) & (1 << 28))); + + return 0; +} +#endif /* (CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII) */ + /* Wait for the chip get the command. */ static int wait_for_eepro100 (struct eth_device *dev) |