Date: Wed, 24 Apr 1996 14:22:52 -0700 (PDT) From: "JULIAN Elischer" <julian@ref.tfs.com> To: dchapes@zeus.leitch.com (Dave Chapeskie) Cc: FreeBSD-hackers@FreeBSD.org Subject: Re: Character device major numbers. Message-ID: <199604242122.OAA23932@ref.tfs.com> In-Reply-To: <199604241631.MAA06404@ale.zeus.leitch.com> from "Dave Chapeskie" at Apr 24, 96 12:31:19 pm
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If you are using -current, things are differnt to -stable.. however You could safely assign yourself numbers after the end of those asssigned. Probably extending the array to past 128, and using 128,129,130 would be a good idea.. alternatively, you could use the 'dynamic' numbers assigned to LKMs. Under -current all Major numbers are dynamic in theory, though we have not yet the infrastructure to do that in practice.. > > Hello all, I have a problem I hope someone can help me with. > > The company I work for is using FreeBSD a new product. We've written > three device drivers to support some custom cards that the product needs > to use. The problem is that there is only one reserved cdev major > number. > > IMHO, It doesn't make sense for my company to go through the effort > of making the drivers loadable to sidestep the major number issue since > the product is a complete system and we provide a prebuilt kernel and the > drivers will be in constant use while the system is in use. > > It also doesn't make sense to request that multiple cdev major > numbers be reserved just for these Leitch drivers since the cards are not > widely available (two of the three will not be sold outside of this > system at all). > > What I'd like to recommend is that several additional major numbers > be reserved for local use. For example having eight reserved major > numbers for use within any one organization should be sufficient for any > current organizations and yet should not impact the size of the cdev/bdev > switch tables very much. > > What do you think? Is there a better solution? > > -- > Dave Chapeskie > Leitch Technology International Inc. > Email: dchapes@zeus.leitch.com >
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