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 26 static int 27 nv1a_ram_create(struct nvkm_object *parent, struct nvkm_object *engine, 28 struct nvkm_oclass *oclass, void *data, u32 size, 29 struct nvkm_object **pobject) 30 { 31 struct nvkm_fb *fb = nvkm_fb(parent); 32 struct nvkm_ram *ram; 33 struct pci_dev *bridge; 34 u32 mem, mib; 35 int ret; 36 37 bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1)); 38 if (!bridge) { 39 nv_fatal(fb, "no bridge device\n"); 40 return -ENODEV; 41 } 42 43 ret = nvkm_ram_create(parent, engine, oclass, &ram); 44 *pobject = nv_object(ram); 45 if (ret) 46 return ret; 47 48 if (nv_device(fb)->chipset == 0x1a) { 49 pci_read_config_dword(bridge, 0x7c, &mem); 50 mib = ((mem >> 6) & 31) + 1; 51 } else { 52 pci_read_config_dword(bridge, 0x84, &mem); 53 mib = ((mem >> 4) & 127) + 1; 54 } 55 56 ram->type = NV_MEM_TYPE_STOLEN; 57 ram->size = mib * 1024 * 1024; 58 return 0; 59 } 60 61 struct nvkm_oclass 62 nv1a_ram_oclass = { 63 .handle = 0, 64 .ofuncs = &(struct nvkm_ofuncs) { 65 .ctor = nv1a_ram_create, 66 .dtor = _nvkm_ram_dtor, 67 .init = _nvkm_ram_init, 68 .fini = _nvkm_ram_fini, 69 } 70 }; 71