1 /* 2 * Copyright 2013 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "priv.h" 25 #include "regsnv04.h" 26 27 static int 28 nv04_ram_create(struct nvkm_object *parent, struct nvkm_object *engine, 29 struct nvkm_oclass *oclass, void *data, u32 size, 30 struct nvkm_object **pobject) 31 { 32 struct nvkm_fb *fb = nvkm_fb(parent); 33 struct nvkm_ram *ram; 34 struct nvkm_device *device = fb->subdev.device; 35 u32 boot0 = nvkm_rd32(device, NV04_PFB_BOOT_0); 36 int ret; 37 38 ret = nvkm_ram_create(parent, engine, oclass, &ram); 39 *pobject = nv_object(ram); 40 if (ret) 41 return ret; 42 43 if (boot0 & 0x00000100) { 44 ram->size = ((boot0 >> 12) & 0xf) * 2 + 2; 45 ram->size *= 1024 * 1024; 46 } else { 47 switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) { 48 case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB: 49 ram->size = 32 * 1024 * 1024; 50 break; 51 case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB: 52 ram->size = 16 * 1024 * 1024; 53 break; 54 case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB: 55 ram->size = 8 * 1024 * 1024; 56 break; 57 case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB: 58 ram->size = 4 * 1024 * 1024; 59 break; 60 } 61 } 62 63 if ((boot0 & 0x00000038) <= 0x10) 64 ram->type = NV_MEM_TYPE_SGRAM; 65 else 66 ram->type = NV_MEM_TYPE_SDRAM; 67 68 return 0; 69 } 70 71 struct nvkm_oclass 72 nv04_ram_oclass = { 73 .handle = 0, 74 .ofuncs = &(struct nvkm_ofuncs) { 75 .ctor = nv04_ram_create, 76 .dtor = _nvkm_ram_dtor, 77 .init = _nvkm_ram_init, 78 .fini = _nvkm_ram_fini, 79 } 80 }; 81