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 25 #include <subdev/fb/regsnv04.h> 26 27 #include "priv.h" 28 29 static int 30 nv04_ram_create(struct nouveau_object *parent, struct nouveau_object *engine, 31 struct nouveau_oclass *oclass, void *data, u32 size, 32 struct nouveau_object **pobject) 33 { 34 struct nouveau_fb *pfb = nouveau_fb(parent); 35 struct nouveau_ram *ram; 36 u32 boot0 = nv_rd32(pfb, NV04_PFB_BOOT_0); 37 int ret; 38 39 ret = nouveau_ram_create(parent, engine, oclass, &ram); 40 *pobject = nv_object(ram); 41 if (ret) 42 return ret; 43 44 if (boot0 & 0x00000100) { 45 ram->size = ((boot0 >> 12) & 0xf) * 2 + 2; 46 ram->size *= 1024 * 1024; 47 } else { 48 switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) { 49 case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB: 50 ram->size = 32 * 1024 * 1024; 51 break; 52 case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB: 53 ram->size = 16 * 1024 * 1024; 54 break; 55 case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB: 56 ram->size = 8 * 1024 * 1024; 57 break; 58 case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB: 59 ram->size = 4 * 1024 * 1024; 60 break; 61 } 62 } 63 64 if ((boot0 & 0x00000038) <= 0x10) 65 ram->type = NV_MEM_TYPE_SGRAM; 66 else 67 ram->type = NV_MEM_TYPE_SDRAM; 68 return 0; 69 } 70 71 struct nouveau_oclass 72 nv04_ram_oclass = { 73 .handle = 0, 74 .ofuncs = &(struct nouveau_ofuncs) { 75 .ctor = nv04_ram_create, 76 .dtor = _nouveau_ram_dtor, 77 .init = _nouveau_ram_init, 78 .fini = _nouveau_ram_fini, 79 } 80 }; 81