From 98887140e343493f01be7a1dec721c024bcf72c7 Mon Sep 17 00:00:00 2001 From: Yang Rong Date: Tue, 2 Aug 2016 15:50:34 +0800 Subject: intel: Export pooled EU and min no. of eus in a pool. Update kernel interface with new I915_GETPARAM ioctl entries for pooled EU and min no. of eus in a pool. Add a wrapping function for each parameter. Userspace drivers need these values when decide the thread count. This kernel enabled pooled eu by default for BXT and for fused down 2x6 parts it is advised to turn it off. But there is another HW issue in these parts (fused down 2x6 parts) before C0 that requires Pooled EU to be enabled as a workaround. In this case the pool configuration changes depending upon which subslice is disabled and the no. of eus in a pool is different, So userspace need to know min no. of eus in a pool. V2: use return value as the query results. ret < 0 when error, ret = 0 when not support, and ret > 0 indicate query results.(Chris) V3: Correct V2 errors. Signed-off-by: Yang Rong Reviewed-by: Chris Wilson --- include/drm/i915_drm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index c4ce6b2c..eb611a7a 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -357,6 +357,8 @@ typedef struct drm_i915_irq_wait { #define I915_PARAM_HAS_GPU_RESET 35 #define I915_PARAM_HAS_RESOURCE_STREAMER 36 #define I915_PARAM_HAS_EXEC_SOFTPIN 37 +#define I915_PARAM_HAS_POOLED_EU 38 +#define I915_PARAM_MIN_EU_IN_POOL 39 typedef struct drm_i915_getparam { __s32 param; -- cgit v1.2.3