/* * Copyright 2013 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs */ #include "ram.h" int nv20_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) { struct nvkm_device *device = fb->subdev.device; u32 pbus1218 = nvkm_rd32(device, 0x001218); u32 size = (nvkm_rd32(device, 0x10020c) & 0xff000000); enum nvkm_ram_type type = NVKM_RAM_TYPE_UNKNOWN; int ret; switch (pbus1218 & 0x00000300) { case 0x00000000: type = NVKM_RAM_TYPE_SDRAM; break; case 0x00000100: type = NVKM_RAM_TYPE_DDR1 ; break; case 0x00000200: type = NVKM_RAM_TYPE_GDDR3; break; case 0x00000300: type = NVKM_RAM_TYPE_GDDR2; break; } ret = nvkm_ram_new_(&nv04_ram_func, fb, type, size, pram); if (ret) return ret; (*pram)->parts = (nvkm_rd32(device, 0x100200) & 0x00000003) + 1; return 0; }