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Fix some comments.

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This commit is contained in:
Warner Losh 2009-04-10 15:30:19 +00:00
parent f5456b5d2c
commit 613dabd54f
1 changed files with 12 additions and 9 deletions
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21
sys/dev/ed/if_ed_pccard.c
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@ -469,8 +469,10 @@ ed_pccard_attach(device_t dev)
goto bad;
/*
* Determine which chipset we are. All the PC Card chipsets have the
* ASIC and NIC offsets in the same place.
* Determine which chipset we are. Almost the PC Card chipsets have
* the ASIC and NIC offsets in the same place. There's a tiny
* minority (2?) that follow the WD80x3 conventions, which are handled
* as a special case.
*/
sc->asic_offset = ED_NOVELL_ASIC_OFFSET;
sc->nic_offset = ED_NOVELL_NIC_OFFSET;
@ -502,13 +504,14 @@ ed_pccard_attach(device_t dev)
}
/*
* For the older cards, we have to get the MAC address from
* the card in some way. Let's try the standard PCMCIA way
* first. If that fails, then check to see if we have valid
* data from the standard NE-2000 data roms. If that fails,
* check to see if the card has a hint about where to look in
* its CIS. If that fails, maybe we should look at some
* default value. In all fails, we fail the attach.
* There are several ways to get the MAC address for the card.
* Some of the above probe routines can fill in the enaddr. If
* not, we run through a number of 'well known' locations:
* (1) From the PC Card FUNCE
* (2) From offset 0 in the shared memory
* (3) From a hinted offset in attribute memory
* (4) From 0xff0 in attribute memory
* If we can't get a non-zero MAC address from this list, we fail.
*/
for (i = 0, sum = 0; i < ETHER_ADDR_LEN; i++)
sum |= sc->enaddr[i];