From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: Freescale Linux BSP review Date: Mon, 13 Dec 2010 16:18:04 +0100 Message-ID: <201012131618.04298.arnd@arndb.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linaro-dev-bounces-cunTk1MwBs8s++Sfvej+rw@public.gmane.org Errors-To: linaro-dev-bounces-cunTk1MwBs8s++Sfvej+rw@public.gmane.org To: linaro-dev-cunTk1MwBs8s++Sfvej+rw@public.gmane.org Cc: Dave Martin , dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: dri-devel@lists.freedesktop.org On Monday 13 December 2010, Jammy Zhou wrote: > On Mon, Dec 13, 2010 at 4:45 AM, Linus Walleij wrote: > > > On 11 December 2010 22:41, Arnd Bergmann wrote: > > > > * amd-gpu -- a single but huge driver for the GPU. As is normally the > >> case with GPU drivers, we can expect long discussions > >> before it will get considered for mainline > >> 4 patches > >> 98 files changed, 278321 insertions(+), 0 deletions(-) > >> > > > > Just out of curiosity, following the discussion between Dave Airlie > > and Codeaurora this summer re GPU driver shims. > > > > Is the AMD GPU exposing all functionality in its kernel driver or > > is there some userspace blob somewhere with lots of e.g. GL > > goodies? > > > All the functionality for the kernel driver of AMD GPU Z430/Z160 (now > belongs to Qualcom) is exposed. But we need accompanied userspace library to > call these functionality (buffer management, command submission, ...). Who owns these components? If it's closed source, the only options we have are lobbying for complete release of the specs for a reimplementation or reverse-engineering the drivers, which may at least get easier with a user space driver than it would be with a kernel driver. Until there is a solution with an open source user space part, I would suggest that the driver better be dropped from the Freescale BSP and we should at least not waste time reviewing it. Arnd