1/* $NetBSD: nouveau_nvkm_subdev_fb_ramnv49.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_ramnv49.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $"); 28 29#include "ramnv40.h" 30 31int 32nv49_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 fb914 = nvkm_rd32(device, 0x100914); 37 enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN; 38 int ret; 39 40 switch (fb914 & 0x00000003) { 41 case 0x00000000: type = NVKM_RAM_TYPE_DDR1 ; break; 42 case 0x00000001: type = NVKM_RAM_TYPE_DDR2 ; break; 43 case 0x00000002: type = NVKM_RAM_TYPE_GDDR3; break; 44 case 0x00000003: break; 45 } 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