Module Name: src
Committed By: msaitoh
Date: Tue Feb 26 05:26:10 UTC 2019
Modified Files:
src/sys/dev/mii: miivar.h rgephy.c
Log Message:
Add MI MII clause 45 MMD MDIO access macros via clause 22 indirect registers:
DESCRIPTION
static inline int
MMD_INDIRECT(struct mii_softc *sc, uint16_t daddr, uint16_t regnum):
Setup MMD device address and register number. It also setup
address incrementation function.
static inline int
MMD_INDIRECT_READ(struct mii_softc *sc, uint16_t daddr, uint16_t regnum,
uint16_t *valp)):
Do MMD_INDIRECT() and then read the register.
static inline int
MMD_INDIRECT_WRITE(struct mii_softc *sc, uint16_t daddr, uint16_t regnum,
uint16_t val):
Do MMD_INDIRECT() and then write the register.
RETURN VALUE
Retruns 0 on success. Non-zero vaule on failure.
Note that old PHYs have no indirect access registers. Accessing such
devices with these functions cause timeout and return non-zero value
(e.g. ETIMEDOUT).
EXAMPLE
Read MMD Auto negotiation device's EEE advertisement register,
drop 100BASE-TX support and write it.
uint16_t eeadvert;
/* Post increment is not required */
MMD_INDIRECT_READ(sc, MDIO_MMD_AN | MMDACR_FN_DATA,
MDIO_AN_EEEADVERT, &eeadvert);
eeadvert &= ~AN_EEEADVERT_100_TX;
/*
* MMD device address and the register number are already set, so it's
* enough to read MII_MMDACR.
*/
PHY_WRITE(sc. MII_MMDACR, eeadvert);
To generate a diff of this commit:
cvs rdiff -u -r1.65 -r1.66 src/sys/dev/mii/miivar.h
cvs rdiff -u -r1.50 -r1.51 src/sys/dev/mii/rgephy.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
