lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

i915: Add GEM ioctl to get available aperture size.

Browse Source 
This will let userland know when to submit its batchbuffers, before they get
too big to fit in the aperture.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Eric Anholt
2008-10-22 21:40:13 -07:00
committed by Dave Airlie
parent 4e270e9b8a
commit 5a125c3c79
4 changed files with 38 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/gpu/drm/i915/i915_gem.c
View File

@@ -79,6 +79,28 @@ i915_gem_init_ioctl(struct drm_device *dev, void *data,
return 0;
}
int
i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_gem_get_aperture *args = data;
struct drm_i915_gem_object *obj_priv;
if (!(dev->driver->driver_features & DRIVER_GEM))
return -ENODEV;
args->aper_size = dev->gtt_total;
args->aper_available_size = args->aper_size;
list_for_each_entry(obj_priv, &dev_priv->mm.active_list, list) {
if (obj_priv->pin_count > 0)
args->aper_available_size -= obj_priv->obj->size;
}
return 0;
}
/**
* Creates a new mm object and returns a handle to it.