diff mbox

[v3,1/7] drm/i915: expose _SLICE_MASK GETPARM

Message ID 20170405162320.30094-2-robert@sixbynine.org (mailing list archive)
State New, archived
Headers show

Commit Message

Robert Bragg April 5, 2017, 4:23 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>
---
 drivers/gpu/drm/i915/i915_drv.c | 5 +++++
 include/uapi/drm/i915_drm.h     | 1 +
 2 files changed, 6 insertions(+)
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5852eed2a867..337acf034d36 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 3554495bef13..f47fb7f26f36 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -392,6 +392,7 @@  typedef struct drm_i915_irq_wait {
 #define I915_PARAM_HAS_POOLED_EU	 38
 #define I915_PARAM_MIN_EU_IN_POOL	 39
 #define I915_PARAM_MMAP_GTT_VERSION	 40
+#define I915_PARAM_SLICE_MASK		 45 /* XXX: rebase before landing */
 
 /* Query whether DRM_I915_GEM_EXECBUFFER2 supports user defined execution
  * priorities and the driver will attempt to execute batches in priority order.