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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-25 19:05:19 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-08-26 08:42:26 +0100 |
| commit | 4cc6907501ed2393a70ad92a30e00dc54c536e50 (patch) | |
| tree | 54f08ed0316186d79f26de860bc101902fc65106 /drivers/gpu/drm/i915/i915_drv.c | |
| parent | 27082493e9c6371b05370a619ab9d2877c5f4726 (diff) | |
| download | linux-4cc6907501ed2393a70ad92a30e00dc54c536e50.tar.gz linux-4cc6907501ed2393a70ad92a30e00dc54c536e50.tar.bz2 linux-4cc6907501ed2393a70ad92a30e00dc54c536e50.zip | |
drm/i915: Add I915_PARAM_MMAP_GTT_VERSION to advertise unlimited mmaps
Now that we have working partial VMA and faulting support for all
objects, including fence support, advertise to userspace that it can
take advantage of unlimited GGTT mmaps.
v2: Make room in the kerneldoc for a more detailed explanation of the
limitations of the GTT mmap interface.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160825180519.11341-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 1d2230f7b749..47fe07283d88 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -355,6 +355,13 @@ static int i915_getparam(struct drm_device *dev, void *data, case I915_PARAM_MIN_EU_IN_POOL: value = INTEL_INFO(dev)->min_eu_in_pool; break; + case I915_PARAM_MMAP_GTT_VERSION: + /* Though we've started our numbering from 1, and so class all + * earlier versions as 0, in effect their value is undefined as + * the ioctl will report EINVAL for the unknown param! + */ + value = i915_gem_mmap_gtt_version(); + break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; |