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drm/i915: Add I915_PARAM_REVISION

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Adds a parameter which can be used with DRM_I915_GETPARAM to query the
GPU revision. The intention is to use this in Mesa to implement the
WaDisableSIMD16On3SrcInstr workaround on Skylake but only for
revision 2.

Signed-off-by: Neil Roberts <neil@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Neil Roberts 2015-03-04 14:41:16 +00:00 committed by Daniel Vetter
parent 10634189fc
commit 27cd44618b
2 changed files with 4 additions and 0 deletions
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3
drivers/gpu/drm/i915/i915_dma.c
View File

@ -68,6 +68,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
case I915_PARAM_CHIPSET_ID:
value = dev->pdev->device;
break;
case I915_PARAM_REVISION:
value = dev->pdev->revision;
break;
case I915_PARAM_HAS_GEM:
value = 1;
break;

1
include/uapi/drm/i915_drm.h
View File

@ -347,6 +347,7 @@ typedef struct drm_i915_irq_wait {
#define I915_PARAM_HAS_COHERENT_PHYS_GTT 29
#define I915_PARAM_MMAP_VERSION 30
#define I915_PARAM_HAS_BSD2 31
#define I915_PARAM_REVISION 32
typedef struct drm_i915_getparam {
int param;