/* * 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" #include "regsnv04.h" const struct nvkm_ram_func nv04_ram_func = { }; int nv04_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) { struct nvkm_device *device = fb->subdev.device; u32 boot0 = nvkm_rd32(device, NV04_PFB_BOOT_0); u64 size; enum nvkm_ram_type type; if (boot0 & 0x00000100) { size = ((boot0 >> 12) & 0xf) * 2 + 2; size *= 1024 * 1024; } else { switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) { case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB: size = 32 * 1024 * 1024; break; case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB: size = 16 * 1024 * 1024; break; case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB: size = 8 * 1024 * 1024; break; case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB: size = 4 * 1024 * 1024; break; } } if ((boot0 & 0x00000038) <= 0x10) type = NVKM_RAM_TYPE_SGRAM; else type = NVKM_RAM_TYPE_SDRAM; return nvkm_ram_new_(&nv04_ram_func, fb, type, size, pram); }