Date: Tue, 31 Jul 2012 09:51:12 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-net@freebsd.org Cc: Venkat Duvvuru <venkatduvvuru.ml@gmail.com> Subject: Re: PCI BAR mmap Message-ID: <201207310951.12251.jhb@freebsd.org> In-Reply-To: <CAGdae7a0xuKnFaeOTUykLcUKuCf17TTuYD_MuG4t7FKbHNoqAg@mail.gmail.com> References: <CAGdae7a0xuKnFaeOTUykLcUKuCf17TTuYD_MuG4t7FKbHNoqAg@mail.gmail.com>
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On Tuesday, July 31, 2012 8:48:00 am Venkat Duvvuru wrote: > Hi, > How to mmap PCI BARs from userland in freebsd? > In Linux the PCI BAR appears as a file in the sysfs file system. How can I > access PCI BAR as a file in freebsd to mmap it? You can export a BAR via a d_mmap() method from a cdevsw device you create in your driver. -- John Baldwin
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