The global sseu config is applicable only to gen11 platforms where
concurrent media, render and OA use cases may cause some subslices to be
turned off and hence lose NOA configuration. Return ENODEV for non-gen11
platforms.
v2: gfx12 is already shipped with this, disable for gfx12.5+ (Lionel)
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_perf.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 1577ab6754db..0ba98f73f217 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -3706,6 +3706,12 @@ static int read_properties_unlocked(struct i915_perf *perf,
case DRM_I915_PERF_PROP_GLOBAL_SSEU: {
struct drm_i915_gem_context_param_sseu user_sseu;
+ if (GRAPHICS_VER_FULL(perf->i915) >= IP_VER(12, 50)) {
+ DRM_DEBUG("SSEU config not supported on gfx %x\n",
+ GRAPHICS_VER_FULL(perf->i915));
+ return -ENODEV;
+ }
+
if (copy_from_user(&user_sseu,
u64_to_user_ptr(value),
sizeof(user_sseu))) {
--
2.35.3
