From 143800547b96dfc56d1f50a135c367fbfd40fd5d Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Mon, 13 Mar 2023 17:29:59 -0700 Subject: [PATCH] drm/xe/rtp: Add match helper for gslice fused off Add match helper to detect when the first gslice is fused off, as needed by future workarounds. v2: - Add warning if called on a platform without geometry pipeline (Matt Roper) - Hardcode 4 as the number of gslices, which matches all the currently supported platforms. PVC doesn't have geometry pipeline and shouldn't use this function (Matt Roper) Signed-off-by: Lucas De Marchi Reviewed-by: Matt Roper Link: https://lore.kernel.org/r/20230314003012.2600353-2-lucas.demarchi@intel.com Signed-off-by: Rodrigo Vivi --- drivers/gpu/drm/xe/xe_rtp.c | 16 ++++++++++++++++ drivers/gpu/drm/xe/xe_rtp.h | 11 +++++++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_rtp.c b/drivers/gpu/drm/xe/xe_rtp.c index 0d2f51bb06e8..cb9dd894547d 100644 --- a/drivers/gpu/drm/xe/xe_rtp.c +++ b/drivers/gpu/drm/xe/xe_rtp.c @@ -8,6 +8,7 @@ #include #include "xe_gt.h" +#include "xe_gt_topology.h" #include "xe_macros.h" #include "xe_reg_sr.h" @@ -170,3 +171,18 @@ bool xe_rtp_match_first_render_or_compute(const struct xe_gt *gt, return render_compute_mask && hwe->engine_id == __ffs(render_compute_mask); } + +bool xe_rtp_match_first_gslice_fused_off(const struct xe_gt *gt, + const struct xe_hw_engine *hwe) +{ + unsigned int dss_per_gslice = 4; + unsigned int dss; + + if (drm_WARN(>_to_xe(gt)->drm, !gt->fuse_topo.g_dss_mask, + "Checking gslice for platform without geometry pipeline\n")) + return false; + + dss = xe_dss_mask_group_ffs(gt->fuse_topo.g_dss_mask, 0, 0); + + return dss >= dss_per_gslice; +} diff --git a/drivers/gpu/drm/xe/xe_rtp.h b/drivers/gpu/drm/xe/xe_rtp.h index ac983ce93684..a3be7c77753a 100644 --- a/drivers/gpu/drm/xe/xe_rtp.h +++ b/drivers/gpu/drm/xe/xe_rtp.h @@ -427,4 +427,15 @@ bool xe_rtp_match_even_instance(const struct xe_gt *gt, bool xe_rtp_match_first_render_or_compute(const struct xe_gt *gt, const struct xe_hw_engine *hwe); +/* + * xe_rtp_match_first_gslice_fused_off - Match when first gslice is fused off + * + * @gt: GT structure + * @hwe: Engine instance + * + * Returns: true if first gslice is fused off, false otherwise. + */ +bool xe_rtp_match_first_gslice_fused_off(const struct xe_gt *gt, + const struct xe_hw_engine *hwe); + #endif