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drm: Add GEM ("graphics execution manager") to i915 driver.

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GEM allows the creation of persistent buffer objects accessible by the
graphics device through new ioctls for managing execution of commands on the
device.  The userland API is almost entirely driver-specific to ensure that
any driver building on this model can easily map the interface to individual
driver requirements.

GEM is used by the 2d driver for managing its internal state allocations and
will be used for pixmap storage to reduce memory consumption and enable
zero-copy GLX_EXT_texture_from_pixmap, and in the 3d driver is used to enable
GL_EXT_framebuffer_object and GL_ARB_pixel_buffer_object.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Eric Anholt
2008-07-30 12:06:12 -07:00
committed by Dave Airlie
parent d1d8c925b7
commit 673a394b1e
23 changed files with 4832 additions and 62 deletions
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10
drivers/gpu/drm/drm_stub.c
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@@ -152,6 +152,15 @@ static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
goto error_out_unreg;
}
if (driver->driver_features & DRIVER_GEM) {
retcode = drm_gem_init(dev);
if (retcode) {
DRM_ERROR("Cannot initialize graphics execution "
"manager (GEM)\n");
goto error_out_unreg;
}
}
return 0;
error_out_unreg:
@@ -317,6 +326,7 @@ int drm_put_dev(struct drm_device * dev)
int drm_put_minor(struct drm_minor **minor_p)
{
struct drm_minor *minor = *minor_p;
DRM_DEBUG("release secondary minor %d\n", minor->index);
if (minor->type == DRM_MINOR_LEGACY)