Date: Thu, 11 Mar 2010 08:14:30 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: bus_space_tag, bus_space_handle Message-ID: <201003110814.31009.jhb@freebsd.org> In-Reply-To: <9f206d1a1003110104p2f329103mc882c99bcc15ea51@mail.gmail.com> References: <9f206d1a1003110104p2f329103mc882c99bcc15ea51@mail.gmail.com>
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On Thursday 11 March 2010 4:04:52 am Cole wrote: > Hi. > > Im currently needing to write to a few registers for a PCI device. The > driver is provided, but it does not contain support for writing > specific registers itself. I also do not with to modify the driver. > > I would like to know what the best method would be for writing to > these registers, the best way to go about getting bus_space_tag, and > handle for the connected pci device. > > Im currently using FreeBSD 7.x. You will most likely need to modify the driver. The PCI bus code only hands out valid resources for a given BAR to the device_t for a given device. -- John Baldwin
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