Sat, May 04, 2002 at 08:21:24PM -0700, Jason R Thorpe:
> So, after fixing a bug in hme_init() (it wasn't telling the MII code
> to bring up the link), I needed to make one more hack to mii_set_media()
> to make the HME negotiate 100baseTX-FDX.
> 
> Basically, the firmware on my CP1500 seems to disable full-duplex in
> the ANAR, and then enables AUTONEG.  Thus, we get a 100baseTX link.
> 
> Now, as it stands now, mii_set_media() sees that AUTONEG is already set,
> and thus skips starting the Nway cycle again.  This, however, isn't what
> we want.  We want to make sure the ANAR gets the new media bits.
> 
> This is pretty easy to do -- just remove the test for AUTONEG from
> mii_set_media().  Unfortunately, this means a busy-loop delay of
> several milliseconds every time an MII-using Ethernet interface's
> "init" routine is called (hackish patch attached).

this seems to work well on my ultra 2's built-in hme.  havent tried it
on my pci ultra yet, but i havent been able to build a kernel where the
hme works for more than 2 months.

any idea why media options do not appear for the sbus SUNW/fas (FAS366/HME)?
at least it doesnt work on my ss20; thus it usually ends up with 100/hdx
and with this patch it appears to always end up with 10hdx.

maggie [1] ifconfig -m hme0
hme0: flags=8a63<UP,BROADCAST,NOTRAILERS,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> mtu 1500
        address: 08:00:20:22:c4:25
        media: Ethernet manual (none)
        supported Ethernet media:
                media manual


> However, it does work:
> 
> cp1500-1:thorpej 1$ ifconfig -a
> hme0: flags=8a63<UP,BROADCAST,NOTRAILERS,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> mtu 1500
>         address: 08:00:20:9f:1c:9a
>         media: Ethernet autoselect (100baseTX full-duplex)
>         status: active
>         inet 192.168.2.3 netmask 0xffffff00 broadcast 192.168.2.255
>         inet6 fe80::a00:20ff:fe9f:1c9a%hme0 prefixlen 64 scopeid 0x1
>         inet6 3ffe:507:183:3::3 prefixlen 64
>         inet6 3ffe:507:183:3:a00:20ff:fe9f:1c9a prefixlen 64
> lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 33184
>         inet 127.0.0.1 netmask 0xff000000
>         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
>         inet6 ::1 prefixlen 128
> cp1500-1:thorpej 2$ 
> 
> So, should I go ahead and commit this (well, a cleaned up version,
> anyway :-)?  Any discussion to be had here?
> 
> -- 
>         -- Jason R. Thorpe <thorpej@wasabisystems.com>

> Index: mii_physubr.c
> ===================================================================
> RCS file: /cvsroot/syssrc/sys/dev/mii/mii_physubr.c,v
> retrieving revision 1.30
> diff -u -r1.30 mii_physubr.c
> --- mii_physubr.c	2001/11/13 07:41:37	1.30
> +++ mii_physubr.c	2002/05/05 03:19:02
> @@ -114,7 +114,7 @@
>  	int bmcr, anar, gtcr;
>  
>  	if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) {
> -		if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0)
> +//		if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0)
>  			(void) mii_phy_auto(sc, 1);
>  		return;
>  	}