drm/nouveau/fb/ram/mcp77: subclass nouveau_ram

#include "nv50.h"

struct nvaa_ram_priv {

	struct nouveau_ram base;

};

static int

nvaa_ram_ctor(struct nouveau_object *parent, struct nouveau_object *engine,

	      struct nouveau_oclass *oclass, void *data, u32 datasize,

	const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */

	const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */

	struct nouveau_fb *pfb = nouveau_fb(parent);

	struct nouveau_ram *ram;

	struct nvaa_ram_priv *priv;

	int ret;

	ret = nouveau_ram_create(parent, engine, oclass, &ram);

	*pobject = nv_object(ram);

	ret = nouveau_ram_create(parent, engine, oclass, &priv);

	*pobject = nv_object(priv);

	if (ret)

		return ret;

	ram->size = nv_rd32(pfb, 0x10020c);

	ram->size = (ram->size & 0xffffff00) | ((ram->size & 0x000000ff) << 32);

	priv->base.size = nv_rd32(pfb, 0x10020c);

	priv->base.size = (priv->base.size & 0xffffff00) | ((priv->base.size & 0x000000ff) << 32);

	ret = nouveau_mm_init(&pfb->vram, rsvd_head, (ram->size >> 12) -

	ret = nouveau_mm_init(&pfb->vram, rsvd_head, (priv->base.size >> 12) -

			      (rsvd_head + rsvd_tail), 1);

	if (ret)

		return ret;

	ram->type   = NV_MEM_TYPE_STOLEN;

	ram->stolen = (u64)nv_rd32(pfb, 0x100e10) << 12;

	ram->get = nv50_ram_get;

	ram->put = nv50_ram_put;

	priv->base.type   = NV_MEM_TYPE_STOLEN;

	priv->base.stolen = (u64)nv_rd32(pfb, 0x100e10) << 12;

	priv->base.get = nv50_ram_get;

	priv->base.put = nv50_ram_put;

	return 0;

}