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/boost.h>
27 
28 u16
29 nvbios_boostTe(struct nvkm_bios *bios,
30 	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
31 {
32 	struct bit_entry bit_P;
33 	u16 boost = 0x0000;
34 
35 	if (!bit_entry(bios, 'P', &bit_P)) {
36 		if (bit_P.version == 2)
37 			boost = nvbios_rd16(bios, bit_P.offset + 0x30);
38 
39 		if (boost) {
40 			*ver = nvbios_rd08(bios, boost + 0);
41 			switch (*ver) {
42 			case 0x11:
43 				*hdr = nvbios_rd08(bios, boost + 1);
44 				*cnt = nvbios_rd08(bios, boost + 5);
45 				*len = nvbios_rd08(bios, boost + 2);
46 				*snr = nvbios_rd08(bios, boost + 4);
47 				*ssz = nvbios_rd08(bios, boost + 3);
48 				return boost;
49 			default:
50 				break;
51 			}
52 		}
53 	}
54 
55 	return 0x0000;
56 }
57 
58 u16
59 nvbios_boostEe(struct nvkm_bios *bios, int idx,
60 	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
61 {
62 	u8  snr, ssz;
63 	u16 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
64 	if (data && idx < *cnt) {
65 		data = data + *hdr + (idx * (*len + (snr * ssz)));
66 		*hdr = *len;
67 		*cnt = snr;
68 		*len = ssz;
69 		return data;
70 	}
71 	return 0x0000;
72 }
73 
74 u16
75 nvbios_boostEp(struct nvkm_bios *bios, int idx,
76 	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
77 {
78 	u16 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
79 	memset(info, 0x00, sizeof(*info));
80 	if (data) {
81 		info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
82 		info->min    =  nvbios_rd16(bios, data + 0x02) * 1000;
83 		info->max    =  nvbios_rd16(bios, data + 0x04) * 1000;
84 	}
85 	return data;
86 }
87 
88 u16
89 nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
90 	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
91 {
92 	u32 data, idx = 0;
93 	while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
94 		if (info->pstate == pstate)
95 			break;
96 	}
97 	return data;
98 }
99 
100 u16
101 nvbios_boostSe(struct nvkm_bios *bios, int idx,
102 	       u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
103 {
104 	if (data && idx < cnt) {
105 		data = data + *hdr + (idx * len);
106 		*hdr = len;
107 		return data;
108 	}
109 	return 0x0000;
110 }
111 
112 u16
113 nvbios_boostSp(struct nvkm_bios *bios, int idx,
114 	       u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
115 	       struct nvbios_boostS *info)
116 {
117 	data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
118 	memset(info, 0x00, sizeof(*info));
119 	if (data) {
120 		info->domain  = nvbios_rd08(bios, data + 0x00);
121 		info->percent = nvbios_rd08(bios, data + 0x01);
122 		info->min     = nvbios_rd16(bios, data + 0x02) * 1000;
123 		info->max     = nvbios_rd16(bios, data + 0x04) * 1000;
124 	}
125 	return data;
126 }
127