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igt/gem_mmap_gtt: Check coherency between GTT and CPU mmappings with LLC

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson
2014-09-08 10:28:41 +01:00
parent ac3d06094a
commit b76f1d8b03
3 changed files with 44 additions and 0 deletions
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lib/ioctl_wrappers.c
+16
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@@ -643,6 +643,22 @@ int gem_available_fences(int fd)
return val;
}
bool gem_has_llc(int fd)
{
struct drm_i915_getparam gp;
int val = 0;
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_HAS_LLC;
gp.value = &val;
if (ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp)))
return 0;
errno = 0;
return val;
}
/**
* gem_get_num_rings:
* @fd: open i915 drm file descriptor