From 601734f7aabd46d3a988554e59908d9de7f8b013 Mon Sep 17 00:00:00 2001 From: Daniele Ceraolo Spurio Date: Fri, 13 Sep 2019 08:51:37 +0100 Subject: drm/i915/tgl: s/ss/eu fuse reading support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Gen12 has dual-subslices (DSS), which compared to gen11 subslices have some duplicated resources/paths. Although DSS behave similarly to 2 subslices, instead of splitting this and presenting userspace with bits not directly representative of hardware resources, present userspace with a subslice_mask made up of DSS bits instead. v2: GEM_BUG_ON on mask size (Lionel) Bspec: 29547 Bspec: 12247 Cc: Kelvin Gardiner Cc: Tvrtko Ursulin Cc: Lionel Landwerlin CC: Radhakrishna Sripada Cc: Michel Thierry #v1 Cc: Daniele Ceraolo Spurio Cc: José Roberto de Souza Signed-off-by: Daniele Ceraolo Spurio Signed-off-by: James Ausmus Signed-off-by: Oscar Mateo Signed-off-by: Sudeep Dutt Signed-off-by: Stuart Summers Signed-off-by: Mika Kuoppala Acked-by: Lionel Landwerlin Reviewed-by: Lucas De Marchi Link: https://patchwork.freedesktop.org/patch/msgid/20190913075137.18476-2-chris@chris-wilson.co.uk Signed-off-by: Chris Wilson --- include/uapi/drm/i915_drm.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'include/uapi') diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 469dc512cca3..30c542144016 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -2033,8 +2033,10 @@ struct drm_i915_query { * (data[X / 8] >> (X % 8)) & 1 * * - the subslice mask for each slice with one bit per subslice telling - * whether a subslice is available. The availability of subslice Y in slice - * X can be queried with the following formula : + * whether a subslice is available. Gen12 has dual-subslices, which are + * similar to two gen11 subslices. For gen12, this array represents dual- + * subslices. The availability of subslice Y in slice X can be queried + * with the following formula : * * (data[subslice_offset + * X * subslice_stride + -- cgit v1.2.3