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Add comments to Linksys probe code.

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Add another OUI to those acceptible to linksys (this check may need to
be removed).
A couple of style(9) nits.
This commit is contained in:
Warner Losh 1999-10-28 04:53:46 +00:00
parent 78d7954c0f
commit 12e0beb470
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=52584
1 changed files with 20 additions and 7 deletions
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27
sys/dev/ed/if_ed.c
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@ -888,25 +888,38 @@ ed_probe_3Com(dev)
return (0);
}
/*
* Probe the Ethernet MAC addrees for PCMCIA Linksys EtherFast 10/100
* and compatible cards (DL10019C Ethernet controller).
*
* Note: The PAO patches try to use more memory for the card, but that
* seems to fail for my card. A future optimization would add this back
* conditionally.
*/
static u_short
ed_get_Linksys(sc)
struct ed_softc *sc;
{
u_char LinksysOUI[] = {0x00, 0xe0, 0x98};
u_char LinksysOUI1[] = {0x00, 0xe0, 0x98};
u_char LinksysOUI2[] = {0x00, 0x80, 0xc8};
u_char sum;
int i;
/*
* 0x14-0x19 : Physical Address Register 0-5 (PAR0-PAR5)
* 0x1A : Card ID Register (CIR)
* 0x1B : Check Sum Register (SR)
*/
for (sum = 0, i = 0x14; i < 0x1c; i++)
sum += inb(sc->nic_addr +i);
sum += inb(sc->nic_addr + i);
if (sum != 0xff)
return (0);
return (0); /* invalid DL10019C */
for (i = 0; i < ETHER_ADDR_LEN; i++) {
sc->arpcom.ac_enaddr[i] = inb(sc->nic_addr + 0x14 + i);
}
for (i = 0; i < sizeof(LinksysOUI); i++) {
if ( sc->arpcom.ac_enaddr[i] != LinksysOUI[i] )
return (0);
}
if (bcmp(sc->arpcom.ac_enaddr, LinksysOUI1, sizeof(LinksysOUI1)) &&
bcmp(sc->arpcom.ac_enaddr, LinksysOUI2, sizeof(LinksysOUI2)))
return (0);
return (1);
}