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/* $Id$ */
/* Simple (default) implementation for SIOCGIFMEDIA/SIOCSIFMEDIA
* to be used by ethernet drivers [from their ioctl].
*
* KERNEL PART (support for drivers)
*
* NOTE: This much simpler than the BSD ifmedia API
*/
/* Author: Till Straumann, <straumanatslacdotstandorddotedu>, 2005 */
/* include first to avoid 'malloc' clash with rtems_bsdnet_malloc() hack */
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/ethernet.h>
#include <net/if.h>
#ifndef __KERNEL__
#define __KERNEL__
#endif
#include <rtems/rtems_mii_ioctl.h>
#include <sys/errno.h>
#define DEBUG
#ifndef MII_1000TCR
#define MII_1000TCR MII_100T2CR
#endif
#ifndef MII_1000TSR
#define MII_1000TSR MII_100T2SR
#endif
int
rtems_mii_ioctl (struct rtems_mdio_info *info, void *uarg, int cmd,
int *media)
{
uint32_t bmcr, bmsr, bmcr2 = 0, bmsr2 = 0, anar, lpar;
int phy = IFM_INST (*media);
unsigned tmp;
int subtype = 0, options = 0;
switch (cmd) {
default:
return EINVAL;
#ifdef DEBUG
case 0:
#endif
case SIOCGIFMEDIA:
if (info->mdio_r (phy, uarg, MII_BMCR, &bmcr))
return EINVAL;
if (info->mdio_r (phy, uarg, MII_BMSR, &bmsr))
return EINVAL;
if (info->has_gmii) {
if (info->mdio_r (phy, uarg, MII_1000TCR, &bmcr2))
return EINVAL;
if (info->mdio_r (phy, uarg, MII_1000TSR, &bmsr2))
return EINVAL;
}
/* link status */
if (BMSR_LINK & bmsr)
options |= IFM_LINK_OK;
/* do we have autonegotiation disabled ? */
if (!(BMCR_AUTOEN & bmcr)) {
options |= IFM_ANEG_DIS;
/* duplex is enforced */
options |= BMCR_FDX & bmcr ? IFM_FDX : IFM_HDX;
/* determine speed */
switch (BMCR_SPEED (bmcr)) {
case BMCR_S10:
subtype = IFM_10_T;
break;
case BMCR_S100:
subtype = IFM_100_TX;
break;
case BMCR_S1000:
subtype = IFM_1000_T;
break;
default:
return ENOTSUP; /* ?? */
}
} else if (!(BMSR_LINK & bmsr) || !(BMSR_ACOMP & bmsr)) {
subtype = IFM_NONE;
} else {
/* everything ok */
tmp = ((bmcr2 >> 2) & bmsr2) & (GTSR_LP_1000THDX | GTSR_LP_1000TFDX);
if (tmp) {
if (GTSR_LP_1000TFDX & tmp)
options |= IFM_FDX;
subtype = IFM_1000_T;
} else {
if (info->mdio_r (phy, uarg, MII_ANAR, &anar))
return EINVAL;
if (info->mdio_r (phy, uarg, MII_ANLPAR, &lpar))
return EINVAL;
if (ANLPAR_ACK & lpar) {
/* this is a negotiated link; otherwise we merely detect the partner's ability */
}
tmp = anar & lpar;
if (ANLPAR_TX_FD & tmp) {
options |= IFM_FDX;
subtype = IFM_100_TX;
} else if (ANLPAR_T4 & tmp) {
subtype = IFM_100_T4;
} else if (ANLPAR_TX & tmp) {
subtype = IFM_100_TX;
} else if (ANLPAR_10_FD & tmp) {
options |= IFM_FDX;
subtype = IFM_10_T;
} else {
subtype = IFM_10_T;
}
}
}
*media = IFM_MAKEWORD (IFM_ETHER, subtype, options, phy);
break;
#ifdef DEBUG
case 1:
#endif
case SIOCSIFMEDIA:
if (IFM_ETHER != IFM_TYPE (*media))
return EINVAL;
if (info->mdio_r (phy, uarg, MII_BMSR, &bmsr))
return EINVAL;
tmp = (IFM_FDX & *media);
switch (IFM_SUBTYPE (*media)) {
default:
return ENOTSUP;
case IFM_AUTO:
bmcr = BMCR_AUTOEN | BMCR_STARTNEG;
tmp = 0;
break;
case IFM_1000_T:
if (!info->has_gmii)
return ENOTSUP;
if (info->mdio_r (phy, uarg, MII_EXTSR, &bmsr2))
return EINVAL;
if (!(bmsr2 & (tmp ? EXTSR_1000TFDX : EXTSR_1000THDX)))
return EOPNOTSUPP;
bmcr = BMCR_S1000;
break;
case IFM_100_TX:
if (!(bmsr & (tmp ? BMSR_100TXFDX : BMSR_100TXHDX)))
return EOPNOTSUPP;
bmcr = BMCR_S100;
break;
case IFM_10_T:
if (!(bmsr & (tmp ? BMSR_10TFDX : BMSR_10THDX)))
return EOPNOTSUPP;
bmcr = BMCR_S10;
break;
}
if (tmp)
bmcr |= BMCR_FDX;
if (info->mdio_w (phy, uarg, MII_BMCR, bmcr))
return EINVAL;
/* TODO: should we adapt advertised capabilites ? */
break;
}
return 0;
}
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