1 /* $NetBSD: nouveau_nvkm_subdev_bios_M0205.c,v 1.3 2021/12/18 23:45:38 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 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_M0205.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
28
29 #include <subdev/bios.h>
30 #include <subdev/bios/bit.h>
31 #include <subdev/bios/M0205.h>
32
33 u32
nvbios_M0205Te(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz)34 nvbios_M0205Te(struct nvkm_bios *bios,
35 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
36 {
37 struct bit_entry bit_M;
38 u32 data = 0x00000000;
39
40 if (!bit_entry(bios, 'M', &bit_M)) {
41 if (bit_M.version == 2 && bit_M.length > 0x08)
42 data = nvbios_rd32(bios, bit_M.offset + 0x05);
43 if (data) {
44 *ver = nvbios_rd08(bios, data + 0x00);
45 switch (*ver) {
46 case 0x10:
47 *hdr = nvbios_rd08(bios, data + 0x01);
48 *len = nvbios_rd08(bios, data + 0x02);
49 *ssz = nvbios_rd08(bios, data + 0x03);
50 *snr = nvbios_rd08(bios, data + 0x04);
51 *cnt = nvbios_rd08(bios, data + 0x05);
52 return data;
53 default:
54 break;
55 }
56 }
57 }
58
59 return 0x00000000;
60 }
61
62 u32
nvbios_M0205Tp(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz,struct nvbios_M0205T * info)63 nvbios_M0205Tp(struct nvkm_bios *bios,
64 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz,
65 struct nvbios_M0205T *info)
66 {
67 u32 data = nvbios_M0205Te(bios, ver, hdr, cnt, len, snr, ssz);
68 memset(info, 0x00, sizeof(*info));
69 switch (!!data * *ver) {
70 case 0x10:
71 info->freq = nvbios_rd16(bios, data + 0x06);
72 break;
73 default:
74 break;
75 }
76 return data;
77 }
78
79 u32
nvbios_M0205Ee(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)80 nvbios_M0205Ee(struct nvkm_bios *bios, int idx,
81 u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
82 {
83 u8 snr, ssz;
84 u32 data = nvbios_M0205Te(bios, ver, hdr, cnt, len, &snr, &ssz);
85 if (data && idx < *cnt) {
86 data = data + *hdr + idx * (*len + (snr * ssz));
87 *hdr = *len;
88 *cnt = snr;
89 *len = ssz;
90 return data;
91 }
92 return 0x00000000;
93 }
94
95 u32
nvbios_M0205Ep(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,struct nvbios_M0205E * info)96 nvbios_M0205Ep(struct nvkm_bios *bios, int idx,
97 u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
98 struct nvbios_M0205E *info)
99 {
100 u32 data = nvbios_M0205Ee(bios, idx, ver, hdr, cnt, len);
101 memset(info, 0x00, sizeof(*info));
102 switch (!!data * *ver) {
103 case 0x10:
104 info->type = nvbios_rd08(bios, data + 0x00) & 0x0f;
105 return data;
106 default:
107 break;
108 }
109 return 0x00000000;
110 }
111
112 u32
nvbios_M0205Se(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr)113 nvbios_M0205Se(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr)
114 {
115
116 u8 cnt, len;
117 u32 data = nvbios_M0205Ee(bios, ent, ver, hdr, &cnt, &len);
118 if (data && idx < cnt) {
119 data = data + *hdr + idx * len;
120 *hdr = len;
121 return data;
122 }
123 return 0x00000000;
124 }
125
126 u32
nvbios_M0205Sp(struct nvkm_bios * bios,int ent,int idx,u8 * ver,u8 * hdr,struct nvbios_M0205S * info)127 nvbios_M0205Sp(struct nvkm_bios *bios, int ent, int idx, u8 *ver, u8 *hdr,
128 struct nvbios_M0205S *info)
129 {
130 u32 data = nvbios_M0205Se(bios, ent, idx, ver, hdr);
131 memset(info, 0x00, sizeof(*info));
132 switch (!!data * *ver) {
133 case 0x10:
134 info->data = nvbios_rd08(bios, data + 0x00);
135 return data;
136 default:
137 break;
138 }
139 return 0x00000000;
140 }
141