1/* $NetBSD: nouveau_subdev_bios_P0260.c,v 1.1.1.1 2014/08/06 12:36:28 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_bios_P0260.c,v 1.1.1.1 2014/08/06 12:36:28 riastradh Exp $");
29
30#include <subdev/bios.h>
31#include <subdev/bios/bit.h>
32#include <subdev/bios/ramcfg.h>
33#include <subdev/bios/P0260.h>
34
35u32
36nvbios_P0260Te(struct nouveau_bios *bios,
37 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *xnr, u8 *xsz)
38{
39 struct bit_entry bit_P;
40 u32 data = 0x00000000;
41
42 if (!bit_entry(bios, 'P', &bit_P)) {
43 if (bit_P.version == 2 && bit_P.length > 0x63)
44 data = nv_ro32(bios, bit_P.offset + 0x60);
45 if (data) {
46 *ver = nv_ro08(bios, data + 0);
47 switch (*ver) {
48 case 0x10:
49 *hdr = nv_ro08(bios, data + 1);
50 *cnt = nv_ro08(bios, data + 2);
51 *len = 4;
52 *xnr = nv_ro08(bios, data + 3);
53 *xsz = 4;
54 return data;
55 default:
56 break;
57 }
58 }
59 }
60
61 return 0x00000000;
62}
63
64u32
65nvbios_P0260Ee(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len)
66{
67 u8 hdr, cnt, xnr, xsz;
68 u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, len, &xnr, &xsz);
69 if (data && idx < cnt)
70 return data + hdr + (idx * *len);
71 return 0x00000000;
72}
73
74u32
75nvbios_P0260Ep(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len,
76 struct nvbios_P0260E *info)
77{
78 u32 data = nvbios_P0260Ee(bios, idx, ver, len);
79 memset(info, 0x00, sizeof(*info));
80 switch (!!data * *ver) {
81 case 0x10:
82 info->data = nv_ro32(bios, data);
83 return data;
84 default:
85 break;
86 }
87 return 0x00000000;
88}
89
90u32
91nvbios_P0260Xe(struct nouveau_bios *bios, int idx, u8 *ver, u8 *xsz)
92{
93 u8 hdr, cnt, len, xnr;
94 u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, &len, &xnr, xsz);
95 if (data && idx < xnr)
96 return data + hdr + (cnt * len) + (idx * *xsz);
97 return 0x00000000;
98}
99
100u32
101nvbios_P0260Xp(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr,
102 struct nvbios_P0260X *info)
103{
104 u32 data = nvbios_P0260Xe(bios, idx, ver, hdr);
105 memset(info, 0x00, sizeof(*info));
106 switch (!!data * *ver) {
107 case 0x10:
108 info->data = nv_ro32(bios, data);
109 return data;
110 default:
111 break;
112 }
113 return 0x00000000;
114}
115