Commits
Alex Deucher committed 75efdee11b5
drm/radeon: implement simple doorbell page allocator The doorbell aperture is a PCI BAR whose pages can be mapped to compute resources for things like wptrs for userspace queues. This patch maps the BAR and sets up a simple allocator to allocate pages from the BAR. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>