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/M0209.h>
27
28 u32
nvbios_M0209Te(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz)29 nvbios_M0209Te(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 > 0x0c)
37 data = nvbios_rd32(bios, bit_M.offset + 0x09);
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 = 1;
46 *cnt = nvbios_rd08(bios, data + 0x04);
47 return data;
48 default:
49 break;
50 }
51 }
52 }
53
54 return 0x00000000;
55 }
56
57 u32
nvbios_M0209Ee(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)58 nvbios_M0209Ee(struct nvkm_bios *bios, int idx,
59 u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
60 {
61 u8 snr, ssz;
62 u32 data = nvbios_M0209Te(bios, ver, hdr, cnt, len, &snr, &ssz);
63 if (data && idx < *cnt) {
64 data = data + *hdr + idx * (*len + (snr * ssz));
65 *hdr = *len;
66 *cnt = snr;
67 *len = ssz;
68 return data;
69 }
70 return 0x00000000;
71 }
72
73 u32
nvbios_M0209Ep(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,struct nvbios_M0209E * info)74 nvbios_M0209Ep(struct nvkm_bios *bios, int idx,
75 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_M0209E *info)
76 {
77 u32 data = nvbios_M0209Ee(bios, idx, ver, hdr, cnt, len);
78 memset(info, 0x00, sizeof(*info));
79 switch (!!data * *ver) {
80 case 0x10:
81 info->v00_40 = (nvbios_rd08(bios, data + 0x00) & 0x40) >> 6;
82 info->bits = nvbios_rd08(bios, data + 0x00) & 0x3f;
83 info->modulo = nvbios_rd08(bios, data + 0x01);
84 info->v02_40 = (nvbios_rd08(bios, data + 0x02) & 0x40) >> 6;
85 info->v02_07 = nvbios_rd08(bios, data + 0x02) & 0x07;
86 info->v03 = nvbios_rd08(bios, data + 0x03);
87 return data;
88 default:
89 break;
90 }
91 return 0x00000000;
92 }
93
94 u32
nvbios_M0209Se(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr)95 nvbios_M0209Se(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr)
96 {
97
98 u8 cnt, len;
99 u32 data = nvbios_M0209Ee(bios, ent, ver, hdr, &cnt, &len);
100 if (data && idx < cnt) {
101 data = data + *hdr + idx * len;
102 *hdr = len;
103 return data;
104 }
105 return 0x00000000;
106 }
107
108 u32
nvbios_M0209Sp(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr,struct nvbios_M0209S * info)109 nvbios_M0209Sp(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr,
110 struct nvbios_M0209S *info)
111 {
112 struct nvbios_M0209E M0209E;
113 u8 cnt, len;
114 u32 data = nvbios_M0209Ep(bios, ent, ver, hdr, &cnt, &len, &M0209E);
115 if (data) {
116 u32 i, data = nvbios_M0209Se(bios, ent, idx, ver, hdr);
117 memset(info, 0x00, sizeof(*info));
118 switch (!!data * *ver) {
119 case 0x10:
120 for (i = 0; i < ARRAY_SIZE(info->data); i++) {
121 u32 bits = (i % M0209E.modulo) * M0209E.bits;
122 u32 mask = (1ULL << M0209E.bits) - 1;
123 u16 off = bits / 8;
124 u8 mod = bits % 8;
125 info->data[i] = nvbios_rd32(bios, data + off);
126 info->data[i] = info->data[i] >> mod;
127 info->data[i] = info->data[i] & mask;
128 }
129 return data;
130 default:
131 break;
132 }
133 }
134 return 0x00000000;
135 }
136