1/* $NetBSD: nouveau_subdev_fb_ramnv1a.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */
2
3/*
4 * Copyright 2013 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_fb_ramnv1a.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $");
29
30#include "priv.h"
31
32static int
33nv1a_ram_create(struct nouveau_object *parent, struct nouveau_object *engine,
34 struct nouveau_oclass *oclass, void *data, u32 size,
35 struct nouveau_object **pobject)
36{
37 struct nouveau_fb *pfb = nouveau_fb(parent);
38 struct nouveau_ram *ram;
39 struct pci_dev *bridge;
40 u32 mem, mib;
41 int ret;
42
43 bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 1));
44 if (!bridge) {
45 nv_fatal(pfb, "no bridge device\n");
46 return -ENODEV;
47 }
48
49 ret = nouveau_ram_create(parent, engine, oclass, &ram);
50 *pobject = nv_object(ram);
51 if (ret)
52 return ret;
53
54 if (nv_device(pfb)->chipset == 0x1a) {
55 pci_read_config_dword(bridge, 0x7c, &mem);
56 mib = ((mem >> 6) & 31) + 1;
57 } else {
58 pci_read_config_dword(bridge, 0x84, &mem);
59 mib = ((mem >> 4) & 127) + 1;
60 }
61
62 ram->type = NV_MEM_TYPE_STOLEN;
63 ram->size = mib * 1024 * 1024;
64 return 0;
65}
66
67struct nouveau_oclass
68nv1a_ram_oclass = {
69 .handle = 0,
70 .ofuncs = &(struct nouveau_ofuncs) {
71 .ctor = nv1a_ram_create,
72 .dtor = _nouveau_ram_dtor,
73 .init = _nouveau_ram_init,
74 .fini = _nouveau_ram_fini,
75 }
76};
77