From: Robert Bragg <robert@xxxxxxxxxxxxx>
Enables userspace to determine the maximum number of slices that can
be enabled on the device and also know what specific slices can be
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>
Signed-off-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 90b646c51759..842e7e75be42 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -367,6 +367,11 @@ 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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