diff mbox

[v4,09/15] drm/i915: expose _SLICE_MASK GETPARM

Message ID 20170412155556.6602-10-robert@sixbynine.org (mailing list archive)
State New, archived
Headers show

Commit Message

Robert Bragg April 12, 2017, 3:55 p.m. UTC 
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@sixbynine.org>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 5 +++++
 include/uapi/drm/i915_drm.h     | 3 +++
 2 files changed, 8 insertions(+)
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index bd85e3826b72..76a724b7cc22 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -357,6 +357,11 @@  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 9ee06ec8a2d6..99bfc3648454 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -412,6 +412,9 @@  typedef struct drm_i915_irq_wait {
  */
 #define I915_PARAM_HAS_EXEC_FENCE	 44
 
+/* Query the mask of slices available for this system */
+#define I915_PARAM_SLICE_MASK		 45
+
 typedef struct drm_i915_getparam {
 	__s32 param;
 	/*