Date: Thu, 16 May 2024 06:43:05 +0200 From: pyrus aboris <pyrus@bsdmail.com> To: Ronald Klop <ronald-lists@klop.ws> Cc: freebsd-embedded@freebsd.org Subject: Re: Re: Broadcom VideoCore graphics acceleration on microboards Message-ID: <trinity-c8fe3dee-0272-4248-a6c2-96f9d7068151-1715834585369@3c-app-mailcom-lxa13> In-Reply-To: <1257336377.4939.1700048220450@localhost> References: <trinity-e3e761fa-e1ba-4359-ba8c-2bbcc07bdabc-1700035971787@3c-app-mailcom-lxa03> <1257336377.4939.1700048220450@localhost>
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There's a newer mention of this for Arm boards for Raspberry Pi a month later in December, https://lists.freebsd.org/archives/freebsd-arm/2023-December/003409.html That mailing list is more fitting. If I were good at this, I would be more helpful. Though letting more know about it, is a start, because the common assumption was that everything uses Intel, AMD and Nvidia. It also doesn't need to be advanced video acceleration. A common future requirement would be enough to play video well enough. I also thought, that since NetBSD had one VideoCore driver, some part of it was opensource. Now, I understand, that was the video driver for Raspberry Pi 3, which NetBSD has a video driver to. You were referring to another opensource driver (V3D) for Raspberry Pi 4. Thank you for a response. It's just good that there is more awareness of this lack of driver ability. > 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[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. >> 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 [https://forums.freebsd.org/threads/what-about-2d-3d-hardware-acceleration-and-audio-support-on-raspberry-pi.86341/]
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