1 | /* $NetBSD: nouveau_subdev_bios_conn.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 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_bios_conn.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $" ); |
29 | |
30 | #include <core/device.h> |
31 | |
32 | #include <subdev/bios.h> |
33 | #include <subdev/bios/dcb.h> |
34 | #include <subdev/bios/conn.h> |
35 | |
36 | u16 |
37 | dcb_conntab(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) |
38 | { |
39 | u16 dcb = dcb_table(bios, ver, hdr, cnt, len); |
40 | if (dcb && *ver >= 0x30 && *hdr >= 0x16) { |
41 | u16 data = nv_ro16(bios, dcb + 0x14); |
42 | if (data) { |
43 | *ver = nv_ro08(bios, data + 0); |
44 | *hdr = nv_ro08(bios, data + 1); |
45 | *cnt = nv_ro08(bios, data + 2); |
46 | *len = nv_ro08(bios, data + 3); |
47 | return data; |
48 | } |
49 | } |
50 | return 0x0000; |
51 | } |
52 | |
53 | u16 |
54 | dcb_conn(struct nouveau_bios *bios, u8 idx, u8 *ver, u8 *len) |
55 | { |
56 | u8 hdr, cnt; |
57 | u16 data = dcb_conntab(bios, ver, &hdr, &cnt, len); |
58 | if (data && idx < cnt) |
59 | return data + hdr + (idx * *len); |
60 | return 0x0000; |
61 | } |
62 | |