On Mon, Mar 02, 2015 at 03:37:32PM -0800, jeff.mcgee@xxxxxxxxx wrote: > From: Jeff McGee <jeff.mcgee@xxxxxxxxx> > > Setup new I915_GETPARAM ioctl entries for subslice total and > EU total. Userspace drivers need these values when constructing > GPGPU commands. This kernel query method is intended to replace > the PCI ID-based tables that userspace drivers currently maintain. > The kernel driver can employ fuse register reads as needed to > ensure the most accurate determination of GT config attributes. > This first became important with Cherryview in which the config > could differ between devices with the same PCI ID. > > The kernel detection of these values is device-specific and not > included in this patch. Because zero is not a valid value for any of > these parameters, a value of zero is interpreted as unknown for the > device. Userspace drivers should continue to maintain ID-based tables > for older devices not supported by the new query method. > We already have total EU detection support for Cherryview but we need to add detection of total subslice. That support is included in the below-linked series which has been reviewed but not yet merged. http://lists.freedesktop.org/archives/intel-gfx/2015-February/060945.html Jeff _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
