Date: Mon, 8 Sep 2014 12:01:31 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Jean-S??bastien P??dron <dumbbell@FreeBSD.org> Cc: freebsd-x11@FreeBSD.org Subject: Re: [CFT] i915: add HW context support (for Mesa 9.2+) Message-ID: <20140908090130.GY2737@kib.kiev.ua> In-Reply-To: <540C1CA8.603@FreeBSD.org> References: <540C1CA8.603@FreeBSD.org>
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[-- Attachment #1 --] On Sun, Sep 07, 2014 at 10:51:52AM +0200, Jean-S??bastien P??dron wrote: > Hello! > > Mesa 9.2+ requires "hardware context support" [1] in the i915 driver to > work on Intel GPUs found in Sandy Bridge and later. Our driver lacks > this feature, that's why we're stuck with Mesa 9.1 in the ports tree. > > If you have one of those GPUs and you try Mesa 10.2 for instance > (available from the xorg-dev's experimental branch [2]), it will > complain with the following message: > > # glxinfo > name of display: :0.0 > Gen6+ requires Kernel 3.6 or later. > Assertion failed: (ctx->Version > 0), (...) > Abort (core dumped) > > I prepared a patch to add this feature to our i915 driver; the goal is > to have it in 10.1-RELEASE: > https://wiki.freebsd.org/Graphics/Add%20HW%20context%20support%20to%20i915 > > The article above explains how to test the patch. We're interested in > success/failure reports for any GPU, not just Intel ones. So please test > it! :) > > Thank you! > > [1] > https://bwidawsk.net/blog/index.php/2013/01/i915-hardware-contexts-and-some-bits-about-batchbuffers/ > [2] https://wiki.freebsd.org/Graphics#experimental > Please do not add dependency on OFED to the drm2. It seems you need idr, and all previous idr uses were replaced by unr(9) for drm2, please do not break this. It seems that unr(9) interface would need to be extended to provide analog of idr_get_new_above(). What is the revision which you used for import of i915_gem_context.c ? There were some very subtle semantical changes in the global gtt mappings functions, esp. WRT interaction with lowmem conditions. I am not sure if it is applicable, and it would get me some time to really remember the details there. The i915 reset rework looks fine, I have it imported in my WIP branch, but I think it will be merged without troubles. Why do you need the changes to struct eb_objects ? If this is due to OFED, please do not. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBAgAGBQJUDXBqAAoJEJDCuSvBvK1BAioP/3j4nexw2KgZfVOH91n0ybZn rL7RHhfWFKOSEsTDvhgqIB2sUXXgBTYkwEJp3PNc3pVxrjGIK+3jhZUkkwVbZ1pR ccg62fU2dtCIEHSvT9CSBfqatfmPZT+dG8I6PUTq9Vsr2L4vBYcpU+iaaFI7HNlr iREmDg/kM8/RfbAGVpI6Rtf8fECR/wA4x6CunbX5EXsvwyETamdioGBGOvEjNmBl ZNiudFyGWvsT4kPowXz7RWzqqCIN84piKiXPG1lRkMJYTf2B8huP1FzqHmYorXo9 h4creJo9gyYx3owTGI4tQXYtvNnxcAc9ygJ5ldIWVf0ipKQMC32M3iT40aZuupRy Xc3ezp2CpTO2liXhZYW2DCp4WUaHmd636Pa341Fp9cQZuQ0OruSwhPDJwOiA39QK 7vugJ2gb5qQ9R0gD8eGzH3gz2ZJhXRYni2RSxNu1/98qydh5wsF8WDCNBkdn3uN2 0SQjJyncmxG2bIHM0FffVFcpKq8k8JmjiOzbTr2txZOupJbSpoJf+6lkSvVdlYGW iZPlniEAA6WOeSwD1prizTG8WgKdMld98Caco5mF5Y1gSqwTQtGOxO/ppo4rLheE TGphW6EGG/qcYCos7G0puCQqyw0jLbNL3v4maymvbVAEFN6W8TqjyqA9WYVfE9oE Ul9cTNdE5H5GJvmP5ED3 =fzpE -----END PGP SIGNATURE-----
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