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 <subdev/bios.h>
25 #include <subdev/bios/bit.h>
26 #include <subdev/bios/M0205.h>
27
28 u32
nvbios_M0205Te(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz)29 nvbios_M0205Te(struct nvkm_bios *bios,
30 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
31 {
32 struct bit_entry bit_M;
33 u32 data = 0x00000000;
34
35 if (!bit_entry(bios, 'M', &bit_M)) {
36 if (bit_M.version == 2 && bit_M.length > 0x08)
37 data = nvbios_rd32(bios, bit_M.offset + 0x05);
38 if (data) {
39 *ver = nvbios_rd08(bios, data + 0x00);
40 switch (*ver) {
41 case 0x10:
42 *hdr = nvbios_rd08(bios, data + 0x01);
43 *len = nvbios_rd08(bios, data + 0x02);
44 *ssz = nvbios_rd08(bios, data + 0x03);
45 *snr = nvbios_rd08(bios, data + 0x04);
46 *cnt = nvbios_rd08(bios, data + 0x05);
47 return data;
48 default:
49 break;
50 }
51 }
52 }
53
54 return 0x00000000;
55 }
56
57 u32
nvbios_M0205Tp(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz,struct nvbios_M0205T * info)58 nvbios_M0205Tp(struct nvkm_bios *bios,
59 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz,
60 struct nvbios_M0205T *info)
61 {
62 u32 data = nvbios_M0205Te(bios, ver, hdr, cnt, len, snr, ssz);
63 memset(info, 0x00, sizeof(*info));
64 switch (!!data * *ver) {
65 case 0x10:
66 info->freq = nvbios_rd16(bios, data + 0x06);
67 break;
68 default:
69 break;
70 }
71 return data;
72 }
73
74 u32
nvbios_M0205Ee(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)75 nvbios_M0205Ee(struct nvkm_bios *bios, int idx,
76 u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
77 {
78 u8 snr, ssz;
79 u32 data = nvbios_M0205Te(bios, ver, hdr, cnt, len, &snr, &ssz);
80 if (data && idx < *cnt) {
81 data = data + *hdr + idx * (*len + (snr * ssz));
82 *hdr = *len;
83 *cnt = snr;
84 *len = ssz;
85 return data;
86 }
87 return 0x00000000;
88 }
89
90 u32
nvbios_M0205Ep(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,struct nvbios_M0205E * info)91 nvbios_M0205Ep(struct nvkm_bios *bios, int idx,
92 u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
93 struct nvbios_M0205E *info)
94 {
95 u32 data = nvbios_M0205Ee(bios, idx, ver, hdr, cnt, len);
96 memset(info, 0x00, sizeof(*info));
97 switch (!!data * *ver) {
98 case 0x10:
99 info->type = nvbios_rd08(bios, data + 0x00) & 0x0f;
100 return data;
101 default:
102 break;
103 }
104 return 0x00000000;
105 }
106
107 u32
nvbios_M0205Se(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr)108 nvbios_M0205Se(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr)
109 {
110
111 u8 cnt, len;
112 u32 data = nvbios_M0205Ee(bios, ent, ver, hdr, &cnt, &len);
113 if (data && idx < cnt) {
114 data = data + *hdr + idx * len;
115 *hdr = len;
116 return data;
117 }
118 return 0x00000000;
119 }
120
121 u32
nvbios_M0205Sp(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr,struct nvbios_M0205S * info)122 nvbios_M0205Sp(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr,
123 struct nvbios_M0205S *info)
124 {
125 u32 data = nvbios_M0205Se(bios, ent, idx, ver, hdr);
126 memset(info, 0x00, sizeof(*info));
127 switch (!!data * *ver) {
128 case 0x10:
129 info->data = nvbios_rd08(bios, data + 0x00);
130 return data;
131 default:
132 break;
133 }
134 return 0x00000000;
135 }
136