drm/nouveau/mmu/nv50,g84: type-based vram allocation and bar mapping

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/class.h

@@ -16,6 +16,7 @@
 
 #define NVIF_CLASS_MEM                               /* if000a.h */  0x8000000a
 #define NVIF_CLASS_MEM_NV04                          /* if000b.h */  0x8000000b
+#define NVIF_CLASS_MEM_NV50                          /* if500b.h */  0x8000500b
 
 #define NVIF_CLASS_VMM                               /* if000c.h */  0x8000000c
 #define NVIF_CLASS_VMM_NV04                          /* if000d.h */  0x8000000d

drivers/gpu/drm/nouveau/include/nvif/if500b.h

@@ -0,0 +1,25 @@
+#ifndef __NVIF_IF500B_H__
+#define __NVIF_IF500B_H__
+#include "if000a.h"
+
+struct nv50_mem_vn {
+	/* nvif_mem_vX ... */
+};
+
+struct nv50_mem_v0 {
+	/* nvif_mem_vX ... */
+	__u8  version;
+	__u8  bankswz;
+	__u8  contig;
+};
+
+struct nv50_mem_map_vn {
+};
+
+struct nv50_mem_map_v0 {
+	__u8  version;
+	__u8  ro;
+	__u8  kind;
+	__u8  comp;
+};
+#endif