On Tue, Mar 03, 2015 at 09:54:39AM +0100, Daniel Vetter wrote: > 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. > > > > For: VIZ-4636 > > Signed-off-by: Jeff McGee <jeff.mcgee@xxxxxxxxx> > > --- > > drivers/gpu/drm/i915/i915_dma.c | 10 ++++++++++ > > include/uapi/drm/i915_drm.h | 2 ++ > > 2 files changed, 12 insertions(+) > > > > diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c > > index 053e178..9350ea2 100644 > > --- a/drivers/gpu/drm/i915/i915_dma.c > > +++ b/drivers/gpu/drm/i915/i915_dma.c > > @@ -150,6 +150,16 @@ static int i915_getparam(struct drm_device *dev, void *data, > > case I915_PARAM_MMAP_VERSION: > > value = 1; > > break; > > + case I915_PARAM_SUBSLICE_TOTAL: > > + value = INTEL_INFO(dev)->subslice_total; > > + if (!value) > > + return -ENODEV; > > + break; > > + case I915_PARAM_EU_TOTAL: > > + value = INTEL_INFO(dev)->eu_total; > > + if (!value) > > + return -ENODEV; > > I need the corresponding userspace support before I can merged this. Strike that, I've missed the beignet support. As soon as beignet maintainers have that reviewed I can pull this in. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
