From: Robert Bragg <robert@xxxxxxxxxxxxx>
Enables userspace to determine the number of slices enabled and also
know what specific slices are enabled. This information is required, for
example, to be able to analyse some OA counter reports where the counter
configuration depends on the HW slice configuration.
Signed-off-by: Robert Bragg <robert@xxxxxxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 5 +++++
include/uapi/drm/i915_drm.h | 3 +++
2 files changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index cc7393e65e99..f13b2c3ce6eb 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -358,6 +358,11 @@ static int i915_getparam(struct drm_device *dev, void *data,
*/
value = 1;
break;
+ case I915_PARAM_SLICE_MASK:
+ value = INTEL_INFO(dev_priv)->sseu.slice_mask;
+ if (!value)
+ return -ENODEV;
+ break;
default:
DRM_DEBUG("Unknown parameter %d\n", param->param);
return -EINVAL;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index f24a80d2d42e..25695c3d9a76 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -418,6 +418,9 @@ typedef struct drm_i915_irq_wait {
*/
#define I915_PARAM_HAS_EXEC_CAPTURE 45
+/* Query the mask of slices available for this system */
+#define I915_PARAM_SLICE_MASK 46
+
typedef struct drm_i915_getparam {
__s32 param;
/*
--
2.11.0
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