Date: Mon, 04 Dec 1995 17:54:59 -0600 From: "Eric L. Hernes" <erich@lodgenet.com> To: Archie Cobbs <archie@tribe.com> Cc: julian@ref.tfs.com (Julian Elischer), erich@lodgenet.com, hackers@FreeBSD.ORG Subject: Re: ethernet card configuration programs Message-ID: <199512042354.RAA04513@jake.lodgenet.com> In-Reply-To: Your message of "Sat, 02 Dec 1995 16:06:41 PST." <199512030006.QAA02784@bubba.tribe.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Archie Cobbs writes:
>
>Well, I tried this and... it seems to work! That is, it works with
>"atlantic.c" but not with "ne2k.c", because ne2k.c also uses "outb_p"
>and "inb_p", which this command has something to do with, I think:
from the linux asm/*.h directory it looks like outb_p() and inb_p() are
outb() and inb() with some type of bounds checking. you should be able
to use outb() and inb().
>
> /* The following is needed for SLOW_DOWN_IO. */
> if (ioperm(0x80, 1, 1)) {
> perror("io-perm");
> return 1;
> }
>
from the linux ioperm man page, this looks like it sets the permissons
on one byte of io-address space starting at 0x80 to `1'. I'd guess
that it allows access access to io-port 0x80. We don't have that fine
a grain of control over access in FreeBSD, just opening "/dev/io" lets you
run hog-wild in the io-space. I think that io-port 0x80 is the
DMA page registers, does that make sense?
>Thanks for the help!
>-Archie
>
>______________________________________________________________________________
>_
>Archie L. Cobbs, archie@tribe.com * Tribe Computer Works http://www.tribe.co
>m
eric.
--
erich@lodgenet.com
erich@rrnet.com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199512042354.RAA04513>