diff options
| author | Pyun YongHyeon <yongari@FreeBSD.org> | 2012-10-05 03:46:25 +0000 |
|---|---|---|
| committer | Pyun YongHyeon <yongari@FreeBSD.org> | 2012-10-05 03:46:25 +0000 |
| commit | a0a03d1e827c692e390c6bc6cd37deaee54ef6bf (patch) | |
| tree | f54f702aca6f6562b08602db1f93fdd37264d541 /sys/dev/bge | |
| parent | e4146b9510d06cf15a49124ae74a11dd4b5ace07 (diff) | |
| download | src-a0a03d1e827c692e390c6bc6cd37deaee54ef6bf.tar.gz src-a0a03d1e827c692e390c6bc6cd37deaee54ef6bf.zip | |
APE firmware touches EMAC Mode and TX/RX MAC Mode registers to keep
the MAC connected to the outside world. So keep the accesses
atomic.
Notes
Notes:
svn path=/head/; revision=241216
Diffstat (limited to 'sys/dev/bge')
| -rw-r--r-- | sys/dev/bge/if_bge.c | 48 |
1 files changed, 29 insertions, 19 deletions
diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c index 8cfe51e8285e..1edc3c70243e 100644 --- a/sys/dev/bge/if_bge.c +++ b/sys/dev/bge/if_bge.c @@ -896,6 +896,7 @@ bge_miibus_statchg(device_t dev) { struct bge_softc *sc; struct mii_data *mii; + uint32_t mac_mode, rx_mode, tx_mode; sc = device_get_softc(dev); if ((sc->bge_ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) @@ -925,30 +926,39 @@ bge_miibus_statchg(device_t dev) sc->bge_link = 0; if (sc->bge_link == 0) return; - BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE); + + /* + * APE firmware touches these registers to keep the MAC + * connected to the outside world. Try to keep the + * accesses atomic. + */ + + /* Set the port mode (MII/GMII) to match the link speed. */ + mac_mode = CSR_READ_4(sc, BGE_MAC_MODE) & + ~(BGE_MACMODE_PORTMODE | BGE_MACMODE_HALF_DUPLEX); + tx_mode = CSR_READ_4(sc, BGE_TX_MODE); + rx_mode = CSR_READ_4(sc, BGE_RX_MODE); + if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T || IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) - BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII); + mac_mode |= BGE_PORTMODE_GMII; else - BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII); + mac_mode |= BGE_PORTMODE_MII; + /* Set MAC flow control behavior to match link flow control settings. */ + tx_mode &= ~BGE_TXMODE_FLOWCTL_ENABLE; + rx_mode &= ~BGE_RXMODE_FLOWCTL_ENABLE; if (IFM_OPTIONS(mii->mii_media_active & IFM_FDX) != 0) { - BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); - if ((IFM_OPTIONS(mii->mii_media_active) & - IFM_ETH_TXPAUSE) != 0) - BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_FLOWCTL_ENABLE); - else - BGE_CLRBIT(sc, BGE_TX_MODE, BGE_TXMODE_FLOWCTL_ENABLE); - if ((IFM_OPTIONS(mii->mii_media_active) & - IFM_ETH_RXPAUSE) != 0) - BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_FLOWCTL_ENABLE); - else - BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_FLOWCTL_ENABLE); - } else { - BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX); - BGE_CLRBIT(sc, BGE_TX_MODE, BGE_TXMODE_FLOWCTL_ENABLE); - BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_FLOWCTL_ENABLE); - } + if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) + tx_mode |= BGE_TXMODE_FLOWCTL_ENABLE; + if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) + rx_mode |= BGE_RXMODE_FLOWCTL_ENABLE; + } else + mac_mode |= BGE_MACMODE_HALF_DUPLEX; + + CSR_WRITE_4(sc, BGE_MAC_MODE, mac_mode); + CSR_WRITE_4(sc, BGE_TX_MODE, tx_mode); + CSR_WRITE_4(sc, BGE_RX_MODE, rx_mode); } /* |