Date: Mon, 20 Nov 2000 17:30:10 -0800 (PST) From: wpaul@FreeBSD.ORG (Bill Paul) To: freebsd-current@freebsd.org Subject: Getting at cardbus CIS data from inside drivers Message-ID: <20001121013010.679C837B4D7@hub.freebsd.org>
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Okay. Recently, David O'Brien handed me an Intel 10/100 Cardbus NIC, which uses the 21143-PB chip. It's a non-MII card (has a Quality Semi symbol PHY). Unfortunately, it looks like Intel has taken a few shortcuts with this card: the serial EEPROM doesn't contain any useful information. Instead, the MAC address and, I presume, the GPIO programming info is stored in the CIS. When the card is inserted, the cardbus code prints out several 'Function Extension' lines, one of which contains the MAC address. The problem is, there's no way for me to obtain this info from inside the driver, unless I map the expansion ROM directly and grovel through the CIS myself, which I don't want to do. I have the card working at the moment using a couple of ugly cheats: I programmed the MAC address in manually using ifconfig dc0 ether blah, and I brute forced the GPIO settings so that all of the pins are configured as outputs and are forced to 1's. This seems to be enough to activate the transceiver, and I can exchange traffic. (I'm composing this e-mail with it right now.) The LED programming is still off though: both LEDs are lit green, and stay on regardless of link indication or speed. Is there any support planned for externalizing the CIS info somehow, i.e. by providing bus methods to call the CIS parsing routines? Another way to do it would be to pass the info down to the child device using ivars. I would imaging that there's similar support for this in Windows, otherwise Intel's driver wouldn't work. -Bill To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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