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further narrow down no carrier workaround, since it appears to only affect

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very specific IBM hardware and other machines with the same BCM ASIC chip id
0x57081021 are just fine.

MFC after:	1 month
This commit is contained in:
Maxim Sobolev 2010-03-10 23:00:15 +00:00
parent 3c7703ea8b
commit 5d25cf29e2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=204989
1 changed files with 19 additions and 4 deletions
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23
sys/dev/mii/brgphy.c
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@ -66,8 +66,6 @@ __FBSDID("$FreeBSD$");
static int brgphy_probe(device_t);
static int brgphy_attach(device_t);
#define BCM5708S_BAD_CHIPID 0x57081021
struct brgphy_softc {
struct mii_softc mii_sc;
int mii_oui;
@ -145,6 +143,23 @@ static const struct mii_phydesc brgphys[] = {
MII_PHY_END
};
#define HS21_PRODUCT_ID "IBM eServer BladeCenter HS21"
#define HS21_BCM_CHIPID 0x57081021
static int
detect_hs21(struct bce_softc *bce_sc)
{
char *sysenv;
if (bce_sc->bce_chipid != HS21_BCM_CHIPID)
return 0;
sysenv = getenv("smbios.system.product");
if (sysenv == NULL)
return 0;
if (strncmp(sysenv, HS21_PRODUCT_ID, strlen(HS21_PRODUCT_ID)) != 0)
return 0;
return (1);
}
/* Search for our PHY in the list of known PHYs */
static int
@ -295,10 +310,10 @@ brgphy_attach(device_t dev)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_2500_SX, IFM_FDX, sc->mii_inst), 0);
printf("2500baseSX-FDX, ");
} else if ((bsc->serdes_flags & BRGPHY_5708S) && bce_sc &&
(bce_sc->bce_chipid == BCM5708S_BAD_CHIPID)) {
(detect_hs21(bce_sc) != 0)) {
/*
* There appears to be certain silicon revision
* usually used in blades that is having issues with
* in IBM HS21 blades that is having issues with
* this driver wating for the auto-negotiation to
* complete. This happens with a specific chip id
* only and when the 1000baseSX-FDX is the only