Date: Wed, 3 Sep 1997 23:38:13 +0200 (CEST) From: Mikael Karpberg <karpen@ocean.campus.luth.se> To: luigi@labinfo.iet.unipi.it (Luigi Rizzo) Cc: hackers@FreeBSD.ORG Subject: Re: PnP support in userconfig Message-ID: <199709032138.XAA18864@ocean.campus.luth.se> In-Reply-To: <199709030949.LAA07543@labinfo.iet.unipi.it> from Luigi Rizzo at "Sep 3, 97 11:49:52 am"
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According to Luigi Rizzo: [...] > Before making the code available, I need suggestions on the following > issues. > > A PnP card can be specified using a unique integer (CSN) starting from > 1 and assigned by the operating system at boot time, or with a 32-bit > number which is the "vendor_id" for the board. Each card has a number > of "logical devices" internally, numbered starting from 0 (the number > is called LDN). > > Each card can accept up to 8 port addresses, 4 memory addresses, 2 irq > and 2 drq lines. > > My code to support PnP in userconfig accepts commands with the > following syntax: > > pnp 1 0 enable port0 0x534 irq0 7 irq1 5 drq0 3 drq1 4 .... > > where the first two parameters identify the CSN and LDN of the card. > I can replace the first parameter with the vendor_id so that the line > would become something like: > > pnp 0x0100561e 0 enable port0 ... > > with the advantage of making the same command work independently of > the CSN assigned to the card, but with the disadvantage of a longer > command and of making impossible to have two cards of the same type on > the same machine (unless one adds another 32-bit integer, the serial > number). I'd really go for the first option unless there are strong > objections. Well... How about making it possible to use both, just in case someone has a problem with knowing the CSN of the card, and only has one card of that kind. Something like: pnp 1 0 enable port0 0x534 irq0 7 irq1 5 drq0 3 drq1 4 OR pnp v0x0100561e 0 enable port0 0x534 irq0 7 irq1 5 drq0 3 drq1 4 Where both are supported? Should be a simple case like: if (*x == 'v') { vid } else { CSN } The synatx above, or the one where you specify as many as you want after the keyword shouldn't matter for this change, so that's irrelevant to this question. /Mikael
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