This will let userspace know whether Resource Streamer is supported
in the kernel.
v2: Update I915_PARAM_HAS_RESOURCE_STREAMER so it's after
I915_PARAM_HAS_GPU_RESET.
v3: Only advertise RS support for hardware that supports it.
Suggested-by: Kenneth Graunke <kenneth@xxxxxxxxxxxxx>
Cc: Kenneth Graunke <kenneth@xxxxxxxxxxxxx>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_dma.c | 3 +++
include/uapi/drm/i915_drm.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 88795d2..4f55f51 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -168,6 +168,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
i915.reset &&
intel_has_gpu_reset(dev);
break;
+ case I915_PARAM_HAS_RESOURCE_STREAMER:
+ value = IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8;
+ 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 f88cc1c..51137bd 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -355,6 +355,7 @@ typedef struct drm_i915_irq_wait {
#define I915_PARAM_SUBSLICE_TOTAL 33
#define I915_PARAM_EU_TOTAL 34
#define I915_PARAM_HAS_GPU_RESET 35
+#define I915_PARAM_HAS_RESOURCE_STREAMER 36
typedef struct drm_i915_getparam {
int param;
--
1.9.1
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