Date: Sun, 11 Feb 2007 18:56:55 +0100 From: "Slawek Zak" <slawek.zak@gmail.com> To: freebsd-net@freebsd.org, freebsd-current@freebsd.org Subject: Re: Forcing 1000FD for bce Message-ID: <787bbe1c0702110956j5c247638v711b45d87040b48b@mail.gmail.com> In-Reply-To: <787bbe1c0701310827o9b84b33q1322007bf68f4f8a@mail.gmail.com> References: <787bbe1c0701310827o9b84b33q1322007bf68f4f8a@mail.gmail.com>
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[-- Attachment #1 --]
On 1/31/07, Slawek Zak <slawek.zak@gmail.com> wrote:
> I have a question for someone familiar with this driver. I must
> enforce Gb/Full-duplex before the end of boot. I have IBM BladeCenter
> chassis which internally uses Nortel 2-3 switches which in turn do not
> allow for autonegotiation of internal interfaces.
>
> I want to run a diskless configuration so changing the bits with
> ifconfig is not an option. Tweaking settings in PXE boot agent doesn't
> help - the link preference is not preserved after kernel starts
> booting.
I've implemented a half-baked solution just to make the darn thing
work. Assuming you have gentbi PHY (check the dmesg), the following
patch removes auto negotiation and half-duplex handling for SX
interface, thus leaving 1000FD only. Tested on IBM LS21 blades. Enjoy.
/S
--
Sławek Żak / UNIX Systems Administrator
[-- Attachment #2 --]
*** sys/dev/mii/gentbi.c.orig Fri Jan 26 18:06:02 2007
--- sys/dev/mii/gentbi.c Sun Feb 11 18:51:29 2007
***************
*** 193,201 ****
* in "auto".
*/
sc->mii_capabilities =
! PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK;
if (sc->mii_capabilities & BMSR_EXTSTAT)
! sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
device_printf(dev, " ");
mii_phy_add_media(sc);
--- 193,201 ----
* in "auto".
*/
sc->mii_capabilities =
! PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK & ~BMSR_ANEG;
if (sc->mii_capabilities & BMSR_EXTSTAT)
! sc->mii_extcapabilities = EXTSR_1000XFDX;
device_printf(dev, " ");
mii_phy_add_media(sc);
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