diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2008-05-07 16:36:19 +0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-05-13 09:31:44 +0400 |
| commit | 3273c2e8c66a21ae1c53b0c730ee937c6efde7e2 (patch) | |
| tree | ee2a1f187c0310e229f51fbfc5fbbe7a5fce5b76 /drivers/net/sfc/mdio_10g.c | |
| parent | 05e3ec04460180f48810cddc2f78e80a725657ad (diff) | |
| download | linux-3273c2e8c66a21ae1c53b0c730ee937c6efde7e2.tar.xz | |
[netdrvr] sfc: sfc: Add self-test support
Add a set of self-tests accessible thorugh ethtool.
Add hardware loopback and TX disable control code to support them.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/sfc/mdio_10g.c')
| -rw-r--r-- | drivers/net/sfc/mdio_10g.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c index dc06bb0aa575..c4f540e93b79 100644 --- a/drivers/net/sfc/mdio_10g.c +++ b/drivers/net/sfc/mdio_10g.c @@ -44,6 +44,9 @@ static int mdio_clause45_check_mmd(struct efx_nic *efx, int mmd, int status; int phy_id = efx->mii.phy_id; + if (LOOPBACK_INTERNAL(efx)) + return 0; + /* Read MMD STATUS2 to check it is responding. */ status = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_STAT2); if (((status >> MDIO_MMDREG_STAT2_PRESENT_LBN) & @@ -164,6 +167,22 @@ int mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask) int mmd = 0; int good; + /* If the port is in loopback, then we should only consider a subset + * of mmd's */ + if (LOOPBACK_INTERNAL(efx)) + return 1; + else if (efx->loopback_mode == LOOPBACK_NETWORK) + return 0; + else if (efx->loopback_mode == LOOPBACK_PHYXS) + mmd_mask &= ~(MDIO_MMDREG_DEVS0_PHYXS | + MDIO_MMDREG_DEVS0_PCS | + MDIO_MMDREG_DEVS0_PMAPMD); + else if (efx->loopback_mode == LOOPBACK_PCS) + mmd_mask &= ~(MDIO_MMDREG_DEVS0_PCS | + MDIO_MMDREG_DEVS0_PMAPMD); + else if (efx->loopback_mode == LOOPBACK_PMAPMD) + mmd_mask &= ~MDIO_MMDREG_DEVS0_PMAPMD; + while (mmd_mask) { if (mmd_mask & 1) { /* Double reads because link state is latched, and a @@ -182,6 +201,65 @@ int mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask) return ok; } +void mdio_clause45_transmit_disable(struct efx_nic *efx) +{ + int phy_id = efx->mii.phy_id; + int ctrl1, ctrl2; + + ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD, + MDIO_MMDREG_TXDIS); + if (efx->tx_disabled) + ctrl2 |= (1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN); + else + ctrl1 &= ~(1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN); + if (ctrl1 != ctrl2) + mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD, + MDIO_MMDREG_TXDIS, ctrl2); +} + +void mdio_clause45_phy_reconfigure(struct efx_nic *efx) +{ + int phy_id = efx->mii.phy_id; + int ctrl1, ctrl2; + + /* Handle (with debouncing) PMA/PMD loopback */ + ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD, + MDIO_MMDREG_CTRL1); + + if (efx->loopback_mode == LOOPBACK_PMAPMD) + ctrl2 |= (1 << MDIO_PMAPMD_CTRL1_LBACK_LBN); + else + ctrl2 &= ~(1 << MDIO_PMAPMD_CTRL1_LBACK_LBN); + + if (ctrl1 != ctrl2) + mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD, + MDIO_MMDREG_CTRL1, ctrl2); + + /* Handle (with debouncing) PCS loopback */ + ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS, + MDIO_MMDREG_CTRL1); + if (efx->loopback_mode == LOOPBACK_PCS) + ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN); + else + ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN); + + if (ctrl1 != ctrl2) + mdio_clause45_write(efx, phy_id, MDIO_MMD_PCS, + MDIO_MMDREG_CTRL1, ctrl2); + + /* Handle (with debouncing) PHYXS network loopback */ + ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS, + MDIO_MMDREG_CTRL1); + if (efx->loopback_mode == LOOPBACK_NETWORK) + ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN); + else + ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN); + + if (ctrl1 != ctrl2) + mdio_clause45_write(efx, phy_id, MDIO_MMD_PHYXS, + MDIO_MMDREG_CTRL1, ctrl2); +} + /** * mdio_clause45_get_settings - Read (some of) the PHY settings over MDIO. * @efx: Efx NIC |