1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/* SPDX-License-Identifier: GPL-2.0-only */
Scope (\_SB.PCI0.MCHC)
{
Mutex (CTCM, 1) /* CTDP Switch Mutex (sync level 1) */
Name (CTCC, 0) /* CTDP Current Selection */
Name (CTCN, 0) /* CTDP Nominal Select */
Name (CTCD, 1) /* CTDP Down Select */
Name (CTCU, 2) /* CTDP Up Select */
Name (SPL1, 0) /* Saved PL1 value */
OperationRegion (MCHB, SystemMemory, MCH_BASE_ADDRESS + 0x5000, 0x1000)
Field (MCHB, DWordAcc, Lock, Preserve)
{
Offset (0x930), /* PACKAGE_POWER_SKU */
CTDN, 15, /* CTDP Nominal PL1 */
Offset (0x938), /* PACKAGE_POWER_SKU_UNIT */
PUNI, 4, /* Power Units */
, 4,
EUNI, 5, /* Energy Units */
, 3,
TUNI, 4, /* Time Units */
Offset (0x958), /* PLATFORM_INFO */
, 40,
LFM_, 8, /* Maximum Efficiency Ratio (LFM) */
Offset (0x9a0), /* TURBO_POWER_LIMIT1 */
PL1V, 15, /* Power Limit 1 Value */
PL1E, 1, /* Power Limit 1 Enable */
PL1C, 1, /* Power Limit 1 Clamp */
PL1T, 7, /* Power Limit 1 Time */
Offset (0x9a4), /* TURBO_POWER_LIMIT2 */
PL2V, 15, /* Power Limit 2 Value */
PL2E, 1, /* Power Limit 2 Enable */
PL2C, 1, /* Power Limit 2 Clamp */
PL2T, 7, /* Power Limit 2 Time */
Offset (0xf3c), /* CONFIG_TDP_NOMINAL */
TARN, 8, /* CTDP Nominal Turbo Activation Ratio */
Offset (0xf40), /* CONFIG_TDP_LEVEL1 */
CTDD, 15, /* CTDP Down PL1 */
, 1,
TARD, 8, /* CTDP Down Turbo Activation Ratio */
Offset (0xf48), /* MSR_CONFIG_TDP_LEVEL2 */
CTDU, 15, /* CTDP Up PL1 */
, 1,
TARU, 8, /* CTDP Up Turbo Activation Ratio */
Offset (0xf50), /* CONFIG_TDP_CONTROL */
CTCS, 2, /* CTDP Select */
Offset (0xf54), /* TURBO_ACTIVATION_RATIO */
TARS, 8, /* Turbo Activation Ratio Select */
}
/*
* Search CPU0 _PSS looking for control = arg0 and then
* return previous P-state entry number for new _PPC
*
* Format of _PSS:
* Name (_PSS, Package () {
* Package (6) { freq, power, tlat, blat, control, status }
* }
*/
External (\_SB.CP00._PSS)
Method (PSSS, 1, NotSerialized)
{
Local0 = 1 /* Start at P1 */
Local1 = SizeOf (\_SB.CP00._PSS)
While (Local0 < Local1) {
/* Store _PSS entry Control value to Local2 */
Local2 = DeRefOf (Index (DeRefOf (Index (\_SB.CP00._PSS, Local0)), 4)) >> 8
If (Local2 == Arg0) {
Return (Local0 - 1)
}
Local0++
}
Return (0)
}
/* Calculate PL2 based on chip type */
Method (CPL2, 1, NotSerialized)
{
/* Haswell ULT PL2 = 25W */
/* FIXME: update for broadwell */
Return (25 * 8)
}
/* Set Config TDP Down */
Method (STND, 0, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
If (CTCD == CTCC) {
Release (CTCM)
Return (0)
}
Debug = "Set TDP Down"
/* Set CTC */
CTCS = CTCD
/* Set TAR */
TARS = TARD
/* Set PPC limit and notify OS */
PPCM = PSSS (TARD)
PPCN ()
/* Set PL2 */
PL2V = CPL2 (CTDD)
/* Set PL1 */
PL1V = CTDD
/* Store the new TDP Down setting */
CTCC = CTCD
Release (CTCM)
Return (1)
}
/* Set Config TDP Nominal from Down */
Method (STDN, 0, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
If (CTCN == CTCC) {
Release (CTCM)
Return (0)
}
Debug = "Set TDP Nominal"
/* Set PL1 */
PL1V = CTDN
/* Set PL2 */
PL2V = CPL2 (CTDN)
/* Set PPC limit and notify OS */
PPCM = PSSS (TARN)
PPCN ()
/* Set TAR */
TARS = TARN
/* Set CTC */
CTCS = CTCN
/* Store the new TDP Nominal setting */
CTCC = CTCN
Release (CTCM)
Return (1)
}
/* Calculate PL1 value based on requested TDP */
Method (TDPP, 1, NotSerialized)
{
Return (((PUNI - 1) << 2) * Arg0)
}
/* Enable Controllable TDP to limit PL1 to requested value */
Method (CTLE, 1, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
Debug = "Enable PL1 Limit"
/* Set _PPC to LFM */
Local0 = PSSS (LFM_)
PPCM = Local0 + 1
\PPCN ()
/* Set TAR to LFM-1 */
TARS = LFM_ - 1
/* Set PL1 to desired value */
SPL1 = PL1V
PL1V = TDPP (Arg0)
/* Set PL1 CLAMP bit */
PL1C = 1
Release (CTCM)
Return (1)
}
/* Disable Controllable TDP */
Method (CTLD, 0, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
Debug = "Disable PL1 Limit"
/* Clear PL1 CLAMP bit */
PL1C = 0
/* Set PL1 to normal value */
PL1V = SPL1
/* Set TAR to 0 */
TARS = 0
/* Set _PPC to 0 */
PPCM = 0
\PPCN ()
Release (CTCM)
Return (1)
}
}
|
