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authorEric Anholt <eric@anholt.net>2008-10-22 21:40:13 -0700
committerDave Airlie <airlied@redhat.com>2008-11-03 10:56:49 +1000
commit5a125c3c79167e78ba44efef03af7090ef28eeaf (patch)
treeb8c3a9e44ea44b7afc821c0422a7ea6360814f03 /drivers/gpu
parent4e270e9b8a9d246290f3901f1fb6c5efdb734ddf (diff)
downloadop-kernel-dev-5a125c3c79167e78ba44efef03af7090ef28eeaf.zip
op-kernel-dev-5a125c3c79167e78ba44efef03af7090ef28eeaf.tar.gz
i915: Add GEM ioctl to get available aperture size.
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>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/i915_dma.c1
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h2
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c22
3 files changed, 25 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 01de536..256e229 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -960,6 +960,7 @@ struct drm_ioctl_desc i915_ioctls[] = {
DRM_IOCTL_DEF(DRM_I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, 0),
DRM_IOCTL_DEF(DRM_I915_GEM_SET_TILING, i915_gem_set_tiling, 0),
DRM_IOCTL_DEF(DRM_I915_GEM_GET_TILING, i915_gem_get_tiling, 0),
+ DRM_IOCTL_DEF(DRM_I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, 0),
};
int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 901e80c..cc8a9f3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -502,6 +502,8 @@ int i915_gem_set_tiling(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int i915_gem_get_tiling(struct drm_device *dev, void *data,
struct drm_file *file_priv);
+int i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
void i915_gem_load(struct drm_device *dev);
int i915_gem_proc_init(struct drm_minor *minor);
void i915_gem_proc_cleanup(struct drm_minor *minor);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 17ae330..c1733ac 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -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.
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