1 /* $NetBSD: nouveau_nvkm_subdev_bios_boost.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_boost.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/boost.h>
32
33 u32
nvbios_boostTe(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,u8 * snr,u8 * ssz)34 nvbios_boostTe(struct nvkm_bios *bios,
35 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
36 {
37 struct bit_entry bit_P;
38 u32 boost = 0;
39
40 if (!bit_entry(bios, 'P', &bit_P)) {
41 if (bit_P.version == 2 && bit_P.length >= 0x34)
42 boost = nvbios_rd32(bios, bit_P.offset + 0x30);
43
44 if (boost) {
45 *ver = nvbios_rd08(bios, boost + 0);
46 switch (*ver) {
47 case 0x11:
48 *hdr = nvbios_rd08(bios, boost + 1);
49 *cnt = nvbios_rd08(bios, boost + 5);
50 *len = nvbios_rd08(bios, boost + 2);
51 *snr = nvbios_rd08(bios, boost + 4);
52 *ssz = nvbios_rd08(bios, boost + 3);
53 return boost;
54 default:
55 break;
56 }
57 }
58 }
59
60 return 0;
61 }
62
63 u32
nvbios_boostEe(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)64 nvbios_boostEe(struct nvkm_bios *bios, int idx,
65 u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
66 {
67 u8 snr, ssz;
68 u32 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
69 if (data && idx < *cnt) {
70 data = data + *hdr + (idx * (*len + (snr * ssz)));
71 *hdr = *len;
72 *cnt = snr;
73 *len = ssz;
74 return data;
75 }
76 return 0;
77 }
78
79 u32
nvbios_boostEp(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,struct nvbios_boostE * info)80 nvbios_boostEp(struct nvkm_bios *bios, int idx,
81 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
82 {
83 u32 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
84 memset(info, 0x00, sizeof(*info));
85 if (data) {
86 info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
87 info->min = nvbios_rd16(bios, data + 0x02) * 1000;
88 info->max = nvbios_rd16(bios, data + 0x04) * 1000;
89 }
90 return data;
91 }
92
93 u32
nvbios_boostEm(struct nvkm_bios * bios,u8 pstate,u8 * ver,u8 * hdr,u8 * cnt,u8 * len,struct nvbios_boostE * info)94 nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
95 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
96 {
97 u32 data, idx = 0;
98 while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
99 if (info->pstate == pstate)
100 break;
101 }
102 return data;
103 }
104
105 u32
nvbios_boostSe(struct nvkm_bios * bios,int idx,u32 data,u8 * ver,u8 * hdr,u8 cnt,u8 len)106 nvbios_boostSe(struct nvkm_bios *bios, int idx,
107 u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
108 {
109 if (data && idx < cnt) {
110 data = data + *hdr + (idx * len);
111 *hdr = len;
112 return data;
113 }
114 return 0;
115 }
116
117 u32
nvbios_boostSp(struct nvkm_bios * bios,int idx,u32 data,u8 * ver,u8 * hdr,u8 cnt,u8 len,struct nvbios_boostS * info)118 nvbios_boostSp(struct nvkm_bios *bios, int idx,
119 u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
120 struct nvbios_boostS *info)
121 {
122 data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
123 memset(info, 0x00, sizeof(*info));
124 if (data) {
125 info->domain = nvbios_rd08(bios, data + 0x00);
126 info->percent = nvbios_rd08(bios, data + 0x01);
127 info->min = nvbios_rd16(bios, data + 0x02) * 1000;
128 info->max = nvbios_rd16(bios, data + 0x04) * 1000;
129 }
130 return data;
131 }
132