Date: Wed, 15 Nov 2023 12:37:00 +0100 (CET) From: Ronald Klop <ronald-lists@klop.ws> To: pyrus aboris <pyrus@bsdmail.com> Cc: freebsd-embedded@freebsd.org Subject: Re: Broadcom VideoCore graphics acceleration on microboards Message-ID: <1257336377.4939.1700048220450@localhost> In-Reply-To: <trinity-e3e761fa-e1ba-4359-ba8c-2bbcc07bdabc-1700035971787@3c-app-mailcom-lxa03> References: <trinity-e3e761fa-e1ba-4359-ba8c-2bbcc07bdabc-1700035971787@3c-app-mailcom-lxa03>
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------=_Part_4938_465269593.1700048220446 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Van: pyrus aboris <pyrus@bsdmail.com> Datum: woensdag, 15 november 2023 09:12 Aan: freebsd-embedded@freebsd.org Onderwerp: Broadcom VideoCore graphics acceleration on microboards > > It has come to my attention that FreeBSD doesn't have a kmod driver for Broadcom VideoCore GPU's > for graphics acceleration. We may have assumed that most boards use AMD, Intel or Nvidia GPU's, > but microboards typically use VideoCore IV hardware for graphics. > > In comparison, NetBSD has support for graphics acceleration for VideoCore hardware, as can be > seen at https://blog.netbsd.org/tnf/entry/raspberry_pi_gpu_acceleration_in > > Also on FreeBSD, drivers may also be lacking for the audio hardware from microboards, which may > be bcm devices. > > Thank you If you have the skills and time to do it I know you would make more people happy. [1] When clicking from that blog to the NetBSD Wiki (https://wiki.netbsd.org/ports/evbarm/raspberry_pi/#index5h1) it states: "X11 and GPU Video acceleration currently only works with 32-bit (ARMv7 and ARMv6) kernels due to the Broadcom code not being 64-bit clean. Since applications require specialized support for the GPU, only a few applications are normally accelerated. NetBSD/aarch64 normally uses llvmpipe to provide fast parallel CPU-driven support for OpenGL, so should be faster when running normal applications. The situation should be improved, ideally by writing a DRM/KMS driver." So it is not always a bed of roses in NetBSD land either. AFAIK this broadcom stuff is proprietary closed source so a bit hard to work on I guess. Although the forums link [1] states that RPI4 has an open source V3D driver. Regards, Ronald. [1] https://forums.freebsd.org/threads/what-about-2d-3d-hardware-acceleration-and-audio-support-on-raspberry-pi.86341/ ------=_Part_4938_465269593.1700048220446 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <html><head></head><body> <p><strong>Van:</strong> pyrus aboris <pyrus@bsdmail.com><br> <strong>Datum:</strong> woensdag, 15 november 2023 09:12<br> <strong>Aan:</strong> freebsd-embedded@freebsd.org<br> <strong>Onderwerp:</strong> Broadcom VideoCore graphics acceleration on microboards</p> <blockquote style="padding-right: 0px; padding-left: 5px; margin-left: 5px; border-left: #000000 2px solid; margin-right: 0px"> <div class="MessageRFC822Viewer" id="P"> <div class="TextHTMLViewer" id="P.P"> <div style="font-family: Verdana;font-size: 12.0px;"> <div>It has come to my attention that FreeBSD doesn't have a kmod driver for Broadcom VideoCore GPU's</div> <div>for graphics acceleration. We may have assumed that most boards use AMD, Intel or Nvidia GPU's,</div> <div>but microboards typically use VideoCore IV hardware for graphics.</div> <div> </div> <div>In comparison, NetBSD has support for graphics acceleration for VideoCore hardware, as can be</div> <div>seen at https://blog.netbsd.org/tnf/entry/raspberry_pi_gpu_acceleration_in</div>; <div> </div> <div>Also on FreeBSD, drivers may also be lacking for the audio hardware from microboards, which may</div> <div>be bcm devices.</div> <div> </div> <div>Thank you</div> </div> </div> </div> </blockquote> <br> <br> <span style="font-family:verdana,geneva,sans-serif;">If you have the skills and time to do it I know you would make more people happy. [1]<br> <br> When clicking from that blog to the NetBSD Wiki (</span><a href="https://wiki.netbsd.org/ports/evbarm/raspberry_pi/#index5h1">https://wiki.netbsd.org/ports/evbarm/raspberry_pi/#index5h1</a>)<span style="font-family:verdana,geneva,sans-serif;"> it states:<br> "X11 and GPU<br> <br> Video acceleration currently only works with 32-bit (ARMv7 and ARMv6) kernels due to the Broadcom code not being 64-bit clean.<br> Since applications require specialized support for the GPU, only a few applications are normally accelerated. NetBSD/aarch64 normally uses llvmpipe to provide fast parallel CPU-driven support for OpenGL, so should be faster when running normal applications.<br> The situation should be improved, ideally by writing a DRM/KMS driver."<br> <br> So it is not always a bed of roses in NetBSD land either.<br> <br> AFAIK this broadcom stuff is proprietary closed source so a bit hard to work on I guess. Although the forums link [1] states that RPI4 has an open source V3D driver.<br> <br> Regards,<br> Ronald.</span><br> <br> [1] https://forums.freebsd.org/threads/what-about-2d-3d-hardware-acceleration-and-audio-support-on-raspberry-pi.86341/</body></html>; ------=_Part_4938_465269593.1700048220446--
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