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      1 /*	$NetBSD: nouveau_nvkm_subdev_fb_ramnv41.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2013 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_ramnv41.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     28 
     29 #include "ramnv40.h"
     30 
     31 int
     32 nv41_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
     33 {
     34 	struct nvkm_device *device = fb->subdev.device;
     35 	u32  size = nvkm_rd32(device, 0x10020c) & 0xff000000;
     36 	u32 fb474 = nvkm_rd32(device, 0x100474);
     37 	enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN;
     38 	int ret;
     39 
     40 	if (fb474 & 0x00000004)
     41 		type = NVKM_RAM_TYPE_GDDR3;
     42 	if (fb474 & 0x00000002)
     43 		type = NVKM_RAM_TYPE_DDR2;
     44 	if (fb474 & 0x00000001)
     45 		type = NVKM_RAM_TYPE_DDR1;
     46 
     47 	ret = nv40_ram_new_(fb, type, size, pram);
     48 	if (ret)
     49 		return ret;
     50 
     51 	(*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1;
     52 	return 0;
     53 }
     54