Date: Fri, 1 Dec 2000 17:33:29 -0800 (PST) From: Oliver Crow <ocrow@skymind.com> To: freebsd-questions@freebsd.org Subject: SiS630E / SiS 900 Ethernet MAC address all zeros Message-ID: <Pine.BSF.4.21.0012011724340.75528-100000@iguana.skymind.com>
index | next in thread | raw e-mail
Hi,
I have an Asus CUSI-FX motherboard based on the SiS630E chipset. I'm
trying to get the onboard ethernet working. Evidently the SiS630E chipset
includes a variant of the SiS 900 network hardware.
The kernel recognizes the network device thusly:
sis0: <SiS 900 10/100BaseTX> port 0xd400-0xd4ff mem 0xeb800000-0xeb800fff
irq 10 at device 1.1 on pci0
sis0: Ethernet address: 00:00:00:00:00:00
So, the driver loads, but the MAC address isn't set correctly. It works
fine except that the other stations on the network get all zero's as the
Mac address for that station, which (I imagine) could cause some problems.
On the SiS site they have an updated ('beta') version of the Linux SiS 900
driver that's supposed to handle the SiS630E chipset. Comparing the
updated driver with the original Linux driver and the new FreeBSD driver,
I discovered that there is a change in the way the ethernet address is
stored between the old SiS 900 NIC and the newer SiS630 series chipsets.
On the SiS 900 the MAC address was stored in the EEPROM, which is where
the FreeBSD driver wants to find it. On the SiS630 the MAC address is
stored in the "APC CMOS RAM", whatever that is. That's where the updated
Linux driver looks if it detects a SiS630e chipset.
Evidently the trick to getting the MAC address is to set some flag in the
SiS PCI/ISA bridge, then do some mysterious jigger-ing with inb and
outb. I don't know much about kernel hacking, you understand.
So my questions are:
1) What is the FreeBSD equivalent of the Linux pci_find_device() function?
-- ie get a pci device address from the vendor and product IDs
2) Is use of inb and outb basically the same as in Linux?
3) What the heck is the Linux code doing?
Also there seem to be some other 630E specific code sections in the Linux
driver, to handle "bugs on default value of PHY registers" and the "630E
equalizer workaroung rule". Are these important, I wonder?
The updated 630E Linux driver is available for download on this page:
http://www.sis.com.tw/support/download/linux.htm#linuxlan
Here's the source code URLs:
http://www.sis.com.tw/ftp/Drivers/linux/630s/sis900.c
http://www.sis.com.tw/ftp/Drivers/linux/630s/sis900.h
The functions I'm looking at are:
sis900_get_mac_addr() : line 209 -- get address the old way
sis630e_get_mac_addr() : line 231 -- get address on the 630e chipset
Oliver
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message
help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0012011724340.75528-100000>