Kill vtophys in drm.

The code we inherited from FreeBSD used vtophys is a fair few places,
nuke that and replace with bus_dma. technically _DRM_SHM should be
managed with uao_create(), but until we move away from mmap and into an
ioctl to map, this will do.

This also paves the way for amd64 support (it lacks vtophys).

ok kettenis, miod looked at it a while back too.

1 files changed, 14 insertions, 0 deletions

diff --git a/sys/dev/pci/drm/drmP.h b/sys/dev/pci/drm/drmP.h
index f93246c0e93..2b0cc8e7f64 100644
--- a/sys/dev/pci/drm/drmP.h
+++ b/sys/dev/pci/drm/drmP.h
@@ -668,12 +668,26 @@ typedef struct drm_agp_head {
 	unsigned long	   page_mask;
 } drm_agp_head_t;
 
+#ifdef __OpenBSD__
+struct drm_sg_dmamem {
+	bus_dma_tag_t		sg_tag;
+	bus_dmamap_t		sg_map;
+	bus_dma_segment_t	*sg_segs;
+	int			sg_nsegs;
+	size_t			sg_size;
+	caddr_t			sg_kva;
+};
+#endif
+
 typedef struct drm_sg_mem {
 	unsigned long   handle;
 	void            *virtual;
 	int             pages;
 	dma_addr_t	*busaddr;
 	drm_dma_handle_t *dmah;	/* Handle to PCI memory for ATI PCIGART table */
+#ifdef __OpenBSD__
+	struct drm_sg_dmamem *mem;
+#endif
 } drm_sg_mem_t;
 
 typedef TAILQ_HEAD(drm_map_list, drm_local_map) drm_map_list_t;