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Diffstat (limited to 'gpxe/src/net/mii.c')
| -rw-r--r-- | gpxe/src/net/mii.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/gpxe/src/net/mii.c b/gpxe/src/net/mii.c deleted file mode 100644 index 0de64428..00000000 --- a/gpxe/src/net/mii.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - - mii.c: MII interface library - - Ported to gPXE by Daniel Verkamp <daniel@drv.nu> - from Linux drivers/net/mii.c - - Maintained by Jeff Garzik <jgarzik@pobox.com> - Copyright 2001,2002 Jeff Garzik - - Various code came from myson803.c and other files by - Donald Becker. Copyright: - - Written 1998-2002 by Donald Becker. - - This software may be used and distributed according - to the terms of the GNU General Public License (GPL), - incorporated herein by reference. Drivers based on - or derived from this code fall under the GPL and must - retain the authorship, copyright and license notice. - This file is not a complete program and may only be - used when the entire operating system is licensed - under the GPL. - - The author may be reached as becker@scyld.com, or C/O - Scyld Computing Corporation - 410 Severn Ave., Suite 210 - Annapolis MD 21403 - -*/ - -#include <mii.h> - -/** - * mii_link_ok - is link status up/ok - * @mii: the MII interface - * - * Returns 1 if the MII reports link status up/ok, 0 otherwise. - */ -int -mii_link_ok ( struct mii_if_info *mii ) -{ - /* first, a dummy read, needed to latch some MII phys */ - mii->mdio_read ( mii->dev, mii->phy_id, MII_BMSR ); - if ( mii->mdio_read ( mii->dev, mii->phy_id, MII_BMSR ) & BMSR_LSTATUS ) - return 1; - return 0; -} - -/** - * mii_check_link - check MII link status - * @mii: MII interface - * - * If the link status changed (previous != current), call - * netif_carrier_on() if current link status is Up or call - * netif_carrier_off() if current link status is Down. - */ -void -mii_check_link ( struct mii_if_info *mii ) -{ - int cur_link = mii_link_ok ( mii ); - int prev_link = netdev_link_ok ( mii->dev ); - - if ( cur_link && !prev_link ) - netdev_link_up ( mii->dev ); - else if (prev_link && !cur_link) - netdev_link_down ( mii->dev ); -} - - -/** - * mii_check_media - check the MII interface for a duplex change - * @mii: the MII interface - * @ok_to_print: OK to print link up/down messages - * @init_media: OK to save duplex mode in @mii - * - * Returns 1 if the duplex mode changed, 0 if not. - * If the media type is forced, always returns 0. - */ -unsigned int -mii_check_media ( struct mii_if_info *mii, - unsigned int ok_to_print, - unsigned int init_media ) -{ - unsigned int old_carrier, new_carrier; - int advertise, lpa, media, duplex; - int lpa2 = 0; - - /* if forced media, go no further */ - if (mii->force_media) - return 0; /* duplex did not change */ - - /* check current and old link status */ - old_carrier = netdev_link_ok ( mii->dev ) ? 1 : 0; - new_carrier = (unsigned int) mii_link_ok ( mii ); - - /* if carrier state did not change, this is a "bounce", - * just exit as everything is already set correctly - */ - if ( ( ! init_media ) && ( old_carrier == new_carrier ) ) - return 0; /* duplex did not change */ - - /* no carrier, nothing much to do */ - if ( ! new_carrier ) { - netdev_link_down ( mii->dev ); - if ( ok_to_print ) - DBG ( "%s: link down\n", mii->dev->name); - return 0; /* duplex did not change */ - } - - /* - * we have carrier, see who's on the other end - */ - netdev_link_up ( mii->dev ); - - /* get MII advertise and LPA values */ - if ( ( ! init_media ) && ( mii->advertising ) ) { - advertise = mii->advertising; - } else { - advertise = mii->mdio_read ( mii->dev, mii->phy_id, MII_ADVERTISE ); - mii->advertising = advertise; - } - lpa = mii->mdio_read ( mii->dev, mii->phy_id, MII_LPA ); - if ( mii->supports_gmii ) - lpa2 = mii->mdio_read ( mii->dev, mii->phy_id, MII_STAT1000 ); - - /* figure out media and duplex from advertise and LPA values */ - media = mii_nway_result ( lpa & advertise ); - duplex = ( media & ADVERTISE_FULL ) ? 1 : 0; - if ( lpa2 & LPA_1000FULL ) - duplex = 1; - - if ( ok_to_print ) - DBG ( "%s: link up, %sMbps, %s-duplex, lpa 0x%04X\n", - mii->dev->name, - lpa2 & ( LPA_1000FULL | LPA_1000HALF ) ? "1000" : - media & ( ADVERTISE_100FULL | ADVERTISE_100HALF ) ? "100" : "10", - duplex ? "full" : "half", - lpa); - - if ( ( init_media ) || ( mii->full_duplex != duplex ) ) { - mii->full_duplex = duplex; - return 1; /* duplex changed */ - } - - return 0; /* duplex did not change */ -} |