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#include <core/device.h>
27
28static int
29nv1a_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
30		struct nvkm_oclass *oclass, void *data, u32 size,
31		struct nvkm_object **pobject)
32{
33	struct nvkm_fb *pfb = nvkm_fb(parent);
34	struct nvkm_ram *ram;
35	struct pci_dev *bridge;
36	u32 mem, mib;
37	int ret;
38
39	bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1));
40	if (!bridge) {
41		nv_fatal(pfb, "no bridge device\n");
42		return -ENODEV;
43	}
44
45	ret = nvkm_ram_create(parent, engine, oclass, &ram);
46	*pobject = nv_object(ram);
47	if (ret)
48		return ret;
49
50	if (nv_device(pfb)->chipset == 0x1a) {
51		pci_read_config_dword(bridge, 0x7c, &mem);
52		mib = ((mem >> 6) & 31) + 1;
53	} else {
54		pci_read_config_dword(bridge, 0x84, &mem);
55		mib = ((mem >> 4) & 127) + 1;
56	}
57
58	ram->type = NV_MEM_TYPE_STOLEN;
59	ram->size = mib * 1024 * 1024;
60	return 0;
61}
62
63struct nvkm_oclass
64nv1a_ram_oclass = {
65	.handle = 0,
66	.ofuncs = &(struct nvkm_ofuncs) {
67		.ctor = nv1a_ram_create,
68		.dtor = _nvkm_ram_dtor,
69		.init = _nvkm_ram_init,
70		.fini = _nvkm_ram_fini,
71	}
72};
73