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drm/xe: Print a debug message if we have no stolen for the initial FB

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Inform the poor sop reading the logs why the initial FB was rejected
if there is no stolen memory.

Technically this should perhaps be an error since the plane is known
to be enabled at this point, and if there is no stolen then it clearly
can't be scanning out from anywhere. But maybe there are some
virtualization passthrough cases and whatnot where we might not be
able to get access to stolen, so keep it as debug (same as i915).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patch.msgid.link/20260511214122.8468-9-ville.syrjala@linux.intel.com
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Acked-by: Matthew Brost <matthew.brost@intel.com> #teams
This commit is contained in:
Ville Syrjälä 2026-05-12 00:41:16 +03:00 committed by Maarten Lankhorst
parent 7745c857dd
commit 1d2a6c96f6
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/xe/display/xe_initial_plane.c
View File

@ -68,10 +68,14 @@ initial_plane_bo(struct xe_device *xe,
"Using phys_base=%pa, based on initial plane programming\n",
&phys_base);
} else {
struct ttm_resource_manager *stolen = ttm_manager_type(&xe->ttm, XE_PL_STOLEN);
struct ttm_resource_manager *stolen;
if (!stolen)
stolen = ttm_manager_type(&xe->ttm, XE_PL_STOLEN);
if (!stolen) {
drm_dbg_kms(&xe->drm, "No stolen for initial FB\n");
return NULL;
}
phys_base = base;
flags |= XE_BO_FLAG_STOLEN;