| /* |
| * 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; |
| } |
