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1 | /** @file\r |
2 | CPU C State control methods\r | |
3 | \r | |
4 | Copyright (c) 2013-2015 Intel Corporation.\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | DefinitionBlock (\r | |
17 | "Cpu0Cst.aml",\r | |
18 | "SSDT",\r | |
19 | 0x01,\r | |
20 | "SsgPmm",\r | |
21 | "Cpu0Cst",\r | |
22 | 0x0011\r | |
23 | )\r | |
24 | {\r | |
25 | External(\_PR.CPU0, DeviceObj)\r | |
26 | External (PDC0, IntObj)\r | |
27 | External (CFGD, FieldUnitObj)\r | |
28 | \r | |
29 | Scope(\_PR.CPU0)\r | |
30 | {\r | |
31 | Method (_CST, 0)\r | |
32 | {\r | |
33 | // If CMP is supported, and OSPM is not capable of independent C1, P, T state\r | |
34 | // support for each processor for multi-processor configuration, we will just report\r | |
35 | // C1 halt\r | |
36 | //\r | |
37 | // PDCx[4] = Indicates whether OSPM is not capable of independent C1, P, T state\r | |
38 | // support for each processor for multi-processor configuration.\r | |
39 | //\r | |
40 | If(LAnd(And(CFGD,0x01000000), LNot(And(PDC0,0x10))))\r | |
41 | {\r | |
42 | Return(Package() {\r | |
43 | 1,\r | |
44 | Package()\r | |
45 | { // C1 halt\r | |
46 | ResourceTemplate(){Register(FFixedHW, 0, 0, 0)},\r | |
47 | 1,\r | |
48 | 157,\r | |
49 | 1000\r | |
50 | }\r | |
51 | })\r | |
52 | }\r | |
53 | \r | |
54 | //\r | |
55 | // If MWAIT extensions is supported and OSPM is capable of performing\r | |
56 | // native C state instructions for the C2/C3 in multi-processor configuration,\r | |
57 | // we report every c state with MWAIT extensions.\r | |
58 | //\r | |
59 | // PDCx[9] = Indicates whether OSPM is capable of performing native C state instructions\r | |
60 | // for the C2/C3 in multi-processor configuration\r | |
61 | //\r | |
62 | If(LAnd(And(CFGD, 0x200000), And(PDC0,0x200)))\r | |
63 | {\r | |
64 | //\r | |
65 | // If C6 is supported, we report MWAIT C1,C2,C4,C6\r | |
66 | //\r | |
67 | If(And(CFGD,0x200))\r | |
68 | {\r | |
69 | Return( Package()\r | |
70 | {\r | |
71 | 4,\r | |
72 | Package()\r | |
73 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
74 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
75 | 1,\r | |
76 | 1,\r | |
77 | 1000\r | |
78 | },\r | |
79 | Package()\r | |
80 | { // MWAIT C2, hardware coordinated with no bus master avoidance\r | |
81 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x10, 1)},\r | |
82 | 2,\r | |
83 | 20,\r | |
84 | 500\r | |
85 | },\r | |
86 | Package()\r | |
87 | { // MWAIT C4, hardware coordinated with bus master avoidance enabled\r | |
88 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x30, 3)},\r | |
89 | 3,\r | |
90 | 100,\r | |
91 | 100\r | |
92 | },\r | |
93 | Package()\r | |
94 | { // MWAIT C6, hardware coordinated with bus master avoidance enabled\r | |
95 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x50, 3)},\r | |
96 | 3,\r | |
97 | 140,\r | |
98 | 10\r | |
99 | }\r | |
100 | })\r | |
101 | }\r | |
102 | //\r | |
103 | // If C4 is supported, we report MWAIT C1,C2,C4\r | |
104 | //\r | |
105 | If(And(CFGD,0x080))\r | |
106 | {\r | |
107 | Return( Package()\r | |
108 | {\r | |
109 | 3,\r | |
110 | Package()\r | |
111 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
112 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
113 | 1,\r | |
114 | 1,\r | |
115 | 1000\r | |
116 | },\r | |
117 | Package()\r | |
118 | { // MWAIT C2, hardware coordinated with no bus master avoidance\r | |
119 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x10, 1)},\r | |
120 | 2,\r | |
121 | 20,\r | |
122 | 500\r | |
123 | },\r | |
124 | Package()\r | |
125 | { // MWAIT C4, hardware coordinated with bus master avoidance enabled\r | |
126 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x30, 3)},\r | |
127 | 3,\r | |
128 | 100,\r | |
129 | 100\r | |
130 | }\r | |
131 | })\r | |
132 | }\r | |
133 | //\r | |
134 | // If C2 is supported, we report MWAIT C1,C2\r | |
135 | //\r | |
136 | If(And(CFGD,0x020))\r | |
137 | {\r | |
138 | Return( Package()\r | |
139 | {\r | |
140 | 2,\r | |
141 | Package()\r | |
142 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
143 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
144 | 1,\r | |
145 | 1,\r | |
146 | 1000\r | |
147 | },\r | |
148 | Package()\r | |
149 | { // MWAIT C2, hardware coordinated with no bus master avoidance\r | |
150 | ResourceTemplate(){Register(FFixedHW, 1, 2, 0x10, 1)},\r | |
151 | 2,\r | |
152 | 20,\r | |
153 | 500\r | |
154 | }\r | |
155 | })\r | |
156 | }\r | |
157 | //\r | |
158 | // Else we only report MWAIT C1.\r | |
159 | //\r | |
160 | Return(Package()\r | |
161 | {\r | |
162 | 1,\r | |
163 | Package()\r | |
164 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
165 | ResourceTemplate () {Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
166 | 1,\r | |
167 | 1,\r | |
168 | 1000\r | |
169 | }\r | |
170 | })\r | |
171 | }\r | |
172 | \r | |
173 | // If OSPM is only capable of performing native C state instructions for\r | |
174 | // the C1 in multi-processor configuration, we report C1 with MWAIT, other\r | |
175 | // C states with IO method.\r | |
176 | //\r | |
177 | // PDCx[8] = Indicates whether OSPM is capable of performing native C state instructions\r | |
178 | // for the C1 in multi-processor configuration\r | |
179 | //\r | |
180 | If(LAnd(And(CFGD, 0x200000), And(PDC0,0x100)))\r | |
181 | {\r | |
182 | //\r | |
183 | // If C6 is supported, we report MWAIT C1, IO C2,C4,C6\r | |
184 | //\r | |
185 | If(And(CFGD,0x200))\r | |
186 | {\r | |
187 | Return( Package()\r | |
188 | {\r | |
189 | 4,\r | |
190 | Package()\r | |
191 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
192 | ResourceTemplate () {Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
193 | 1,\r | |
194 | 1,\r | |
195 | 1000\r | |
196 | },\r | |
197 | Package()\r | |
198 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
199 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
200 | 2,\r | |
201 | 20,\r | |
202 | 500\r | |
203 | },\r | |
204 | Package()\r | |
205 | { // IO C4 ("PMBALVL4" will be updated at runtime)\r | |
206 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x344C564C41424D50)},\r | |
207 | 3,\r | |
208 | 100,\r | |
209 | 100\r | |
210 | },\r | |
211 | Package()\r | |
212 | { // IO C6 ("PMBALVL6" will be updated at runtime)\r | |
213 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x364C564C41424D50)},\r | |
214 | 3,\r | |
215 | 140,\r | |
216 | 10\r | |
217 | }\r | |
218 | })\r | |
219 | }\r | |
220 | //\r | |
221 | // If C4 is supported, we report MWAIT C1, IO C2,C4\r | |
222 | //\r | |
223 | If(And(CFGD,0x080))\r | |
224 | {\r | |
225 | Return( Package()\r | |
226 | {\r | |
227 | 3,\r | |
228 | Package()\r | |
229 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
230 | ResourceTemplate () {Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
231 | 1,\r | |
232 | 1,\r | |
233 | 1000\r | |
234 | },\r | |
235 | Package()\r | |
236 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
237 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
238 | 2,\r | |
239 | 20,\r | |
240 | 500\r | |
241 | },\r | |
242 | Package()\r | |
243 | { // IO C4 ("PMBALVL4" will be updated at runtime)\r | |
244 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x344C564C41424D50)},\r | |
245 | 3,\r | |
246 | 100,\r | |
247 | 100\r | |
248 | }\r | |
249 | })\r | |
250 | }\r | |
251 | //\r | |
252 | // If C2 is supported, we report MWAIT C1, IO C2\r | |
253 | //\r | |
254 | If(And(CFGD,0x020))\r | |
255 | {\r | |
256 | Return( Package()\r | |
257 | {\r | |
258 | 2,\r | |
259 | Package()\r | |
260 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
261 | ResourceTemplate () {Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
262 | 1,\r | |
263 | 1,\r | |
264 | 1000\r | |
265 | },\r | |
266 | Package()\r | |
267 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
268 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
269 | 2,\r | |
270 | 20,\r | |
271 | 500\r | |
272 | }\r | |
273 | })\r | |
274 | }\r | |
275 | //\r | |
276 | // Else we only report MWAIT C1.\r | |
277 | //\r | |
278 | Return(Package()\r | |
279 | {\r | |
280 | 1,\r | |
281 | Package()\r | |
282 | { // MWAIT C1, hardware coordinated with no bus master avoidance\r | |
283 | ResourceTemplate () {Register(FFixedHW, 1, 2, 0x00, 1)},\r | |
284 | 1,\r | |
285 | 1,\r | |
286 | 1000\r | |
287 | }\r | |
288 | })\r | |
289 | }\r | |
290 | \r | |
291 | //\r | |
292 | // If MWAIT is not supported, we report all the c states with IO method\r | |
293 | //\r | |
294 | \r | |
295 | //\r | |
296 | // If C6 is supported, we report C1 halt, IO C2,C4,C6\r | |
297 | //\r | |
298 | If(And(CFGD,0x200))\r | |
299 | {\r | |
300 | Return(Package()\r | |
301 | {\r | |
302 | 4,\r | |
303 | Package()\r | |
304 | { // C1 Halt\r | |
305 | ResourceTemplate () {Register(FFixedHW, 0, 0, 0)},\r | |
306 | 1,\r | |
307 | 1,\r | |
308 | 1000\r | |
309 | },\r | |
310 | Package()\r | |
311 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
312 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
313 | 2,\r | |
314 | 20,\r | |
315 | 500\r | |
316 | },\r | |
317 | Package()\r | |
318 | { // IO C4 ("PMBALVL4" will be updated at runtime)\r | |
319 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x344C564C41424D50)},\r | |
320 | 3,\r | |
321 | 100,\r | |
322 | 100\r | |
323 | },\r | |
324 | Package()\r | |
325 | { // IO C6 ("PMBALVL6" will be updated at runtime)\r | |
326 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x364C564C41424D50)},\r | |
327 | 3,\r | |
328 | 140,\r | |
329 | 10\r | |
330 | }\r | |
331 | })\r | |
332 | }\r | |
333 | //\r | |
334 | // If C4 is supported, we report C1 halt, IO C2,C4\r | |
335 | //\r | |
336 | If(And(CFGD,0x080))\r | |
337 | {\r | |
338 | Return(Package()\r | |
339 | {\r | |
340 | 3,\r | |
341 | Package()\r | |
342 | { // C1 halt\r | |
343 | ResourceTemplate () {Register(FFixedHW, 0, 0, 0)},\r | |
344 | 1,\r | |
345 | 1,\r | |
346 | 1000\r | |
347 | },\r | |
348 | Package()\r | |
349 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
350 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
351 | 2,\r | |
352 | 20,\r | |
353 | 500\r | |
354 | },\r | |
355 | Package()\r | |
356 | { // IO C4 ("PMBALVL4" will be updated at runtime)\r | |
357 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x344C564C41424D50)},\r | |
358 | 3,\r | |
359 | 100,\r | |
360 | 100\r | |
361 | }\r | |
362 | })\r | |
363 | }\r | |
364 | \r | |
365 | //\r | |
366 | // If C2 is supported, we report C1 halt, IO C2\r | |
367 | //\r | |
368 | If(And(CFGD,0x020))\r | |
369 | {\r | |
370 | Return(Package()\r | |
371 | {\r | |
372 | 2,\r | |
373 | Package()\r | |
374 | { // C1 halt\r | |
375 | ResourceTemplate () {Register(FFixedHW, 0, 0, 0)},\r | |
376 | 1,\r | |
377 | 1,\r | |
378 | 1000\r | |
379 | },\r | |
380 | Package()\r | |
381 | { // IO C2 ("PMBALVL2" will be updated at runtime)\r | |
382 | ResourceTemplate () {Register(SystemIO, 8, 0, 0x324C564C41424D50)},\r | |
383 | 2,\r | |
384 | 20,\r | |
385 | 500\r | |
386 | }\r | |
387 | })\r | |
388 | }\r | |
389 | //\r | |
390 | // Else we only report C1 halt.\r | |
391 | //\r | |
392 | Return(Package()\r | |
393 | {\r | |
394 | 1,\r | |
395 | Package()\r | |
396 | { // C1 halt\r | |
397 | ResourceTemplate () {Register(FFixedHW, 0, 0, 0)},\r | |
398 | 1,\r | |
399 | 1,\r | |
400 | 1000\r | |
401 | }\r | |
402 | })\r | |
403 | }\r | |
404 | }\r | |
405 | }\r |