1 /*
2 * Copyright 2014 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 <bskeggs@redhat.com>
23 */
24 #include <subdev/bios.h>
25 #include <subdev/bios/pcir.h>
26
27 u32
28 nvbios_pcirTe(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr)
29 {
30 u32 data = nvbios_rd16(bios, base + 0x18);
31 if (data) {
32 data += base;
33 switch (nvbios_rd32(bios, data + 0x00)) {
34 case 0x52494350: /* PCIR */
35 case 0x53494752: /* RGIS */
36 case 0x5344504e: /* NPDS */
37 *hdr = nvbios_rd16(bios, data + 0x0a);
38 *ver = nvbios_rd08(bios, data + 0x0c);
39 break;
40 default:
41 nvkm_debug(&bios->subdev,
42 "%08x: PCIR signature (%08x) unknown\n",
43 data, nvbios_rd32(bios, data + 0x00));
44 data = 0;
45 break;
46 }
47 }
48 return data;
49 }
50
51 u32
52 nvbios_pcirTp(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr,
53 struct nvbios_pcirT *info)
54 {
55 u32 data = nvbios_pcirTe(bios, base, ver, hdr);
56 memset(info, 0x00, sizeof(*info));
57 if (data) {
58 info->vendor_id = nvbios_rd16(bios, data + 0x04);
59 info->device_id = nvbios_rd16(bios, data + 0x06);
60 info->class_code[0] = nvbios_rd08(bios, data + 0x0d);
61 info->class_code[1] = nvbios_rd08(bios, data + 0x0e);
62 info->class_code[2] = nvbios_rd08(bios, data + 0x0f);
63 info->image_size = nvbios_rd16(bios, data + 0x10) * 512;
64 info->image_rev = nvbios_rd16(bios, data + 0x12);
65 info->image_type = nvbios_rd08(bios, data + 0x14);
66 info->last = nvbios_rd08(bios, data + 0x15) & 0x80;
67 }
68 return data;
69 }