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c4671a67 | 1 | /** @file\r |
2 | Construct MP Services Protocol on top of pthreads. This code makes APs show up \r | |
3 | in the emulator. PcdEmuApCount is the number of APs the emulator should produce.\r | |
4 | \r | |
5 | The MP Services Protocol provides a generalized way of performing following tasks:\r | |
6 | - Retrieving information of multi-processor environment and MP-related status of\r | |
7 | specific processors.\r | |
8 | - Dispatching user-provided function to APs.\r | |
9 | - Maintain MP-related processor status.\r | |
10 | \r | |
11 | The MP Services Protocol must be produced on any system with more than one logical\r | |
12 | processor.\r | |
13 | \r | |
14 | The Protocol is available only during boot time.\r | |
15 | \r | |
16 | MP Services Protocol is hardware-independent. Most of the logic of this protocol\r | |
17 | is architecturally neutral. It abstracts the multi-processor environment and \r | |
18 | status of processors, and provides interfaces to retrieve information, maintain, \r | |
19 | and dispatch.\r | |
20 | \r | |
21 | MP Services Protocol may be consumed by ACPI module. The ACPI module may use this \r | |
22 | protocol to retrieve data that are needed for an MP platform and report them to OS.\r | |
23 | MP Services Protocol may also be used to program and configure processors, such \r | |
24 | as MTRR synchronization for memory space attributes setting in DXE Services.\r | |
25 | MP Services Protocol may be used by non-CPU DXE drivers to speed up platform boot \r | |
26 | by taking advantage of the processing capabilities of the APs, for example, using \r | |
27 | APs to help test system memory in parallel with other device initialization.\r | |
28 | Diagnostics applications may also use this protocol for multi-processor.\r | |
29 | \r | |
224e1333 | 30 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r |
c4671a67 | 31 | Portitions Copyright (c) 2011, Apple Inc. All rights reserved.\r |
224e1333 | 32 | This program and the accompanying materials are licensed and made available under\r |
33 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
c4671a67 | 34 | The full text of the license may be found at\r |
224e1333 | 35 | http://opensource.org/licenses/bsd-license.php.\r |
36 | \r | |
37 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
c4671a67 | 38 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
39 | \r | |
224e1333 | 40 | \r |
c4671a67 | 41 | **/\r |
42 | \r | |
43 | #include "CpuDriver.h"\r | |
44 | \r | |
45 | \r | |
46 | MP_SYSTEM_DATA gMPSystem;\r | |
47 | EMU_PTREAD_THUNK_PROTOCOL *gPthread = NULL; \r | |
48 | EFI_EVENT gReadToBootEvent;\r | |
49 | BOOLEAN gReadToBoot = FALSE;\r | |
50 | UINTN gPollInterval;\r | |
51 | \r | |
52 | \r | |
53 | BOOLEAN\r | |
54 | IsBSP (\r | |
55 | VOID\r | |
56 | )\r | |
57 | {\r | |
58 | EFI_STATUS Status;\r | |
59 | UINTN ProcessorNumber;\r | |
60 | \r | |
61 | Status = CpuMpServicesWhoAmI (&mMpSercicesTemplate, &ProcessorNumber);\r | |
62 | if (EFI_ERROR (Status)) {\r | |
63 | return FALSE;\r | |
64 | }\r | |
65 | \r | |
66 | return (gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0;\r | |
67 | }\r | |
68 | \r | |
69 | \r | |
70 | VOID\r | |
71 | SetApProcedure (\r | |
72 | IN PROCESSOR_DATA_BLOCK *Processor,\r | |
73 | IN EFI_AP_PROCEDURE Procedure,\r | |
74 | IN VOID *ProcedureArgument\r | |
75 | )\r | |
76 | {\r | |
77 | gPthread->MutextLock (Processor->ProcedureLock);\r | |
78 | Processor->Parameter = ProcedureArgument;\r | |
79 | Processor->Procedure = Procedure;\r | |
80 | gPthread->MutexUnlock (Processor->ProcedureLock);\r | |
81 | }\r | |
82 | \r | |
83 | \r | |
84 | EFI_STATUS\r | |
85 | GetNextBlockedNumber (\r | |
86 | OUT UINTN *NextNumber\r | |
87 | )\r | |
88 | {\r | |
89 | UINTN Number;\r | |
90 | PROCESSOR_STATE ProcessorState;\r | |
91 | PROCESSOR_DATA_BLOCK *Data;\r | |
92 | \r | |
93 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
94 | Data = &gMPSystem.ProcessorData[Number];\r | |
95 | if ((Data->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
96 | // Skip BSP\r | |
97 | continue;\r | |
98 | }\r | |
99 | \r | |
100 | gPthread->MutextLock (Data->StateLock);\r | |
101 | ProcessorState = Data->State;\r | |
102 | gPthread->MutexUnlock (Data->StateLock);\r | |
103 | \r | |
104 | if (ProcessorState == CPU_STATE_BLOCKED) {\r | |
105 | *NextNumber = Number;\r | |
106 | return EFI_SUCCESS;\r | |
107 | }\r | |
108 | }\r | |
109 | \r | |
110 | return EFI_NOT_FOUND;\r | |
111 | }\r | |
112 | \r | |
113 | \r | |
114 | \r | |
115 | \r | |
116 | /**\r | |
117 | This service retrieves the number of logical processor in the platform\r | |
118 | and the number of those logical processors that are enabled on this boot.\r | |
119 | This service may only be called from the BSP.\r | |
120 | \r | |
121 | This function is used to retrieve the following information:\r | |
122 | - The number of logical processors that are present in the system.\r | |
123 | - The number of enabled logical processors in the system at the instant \r | |
124 | this call is made.\r | |
125 | \r | |
126 | Because MP Service Protocol provides services to enable and disable processors \r | |
127 | dynamically, the number of enabled logical processors may vary during the \r | |
128 | course of a boot session.\r | |
129 | \r | |
130 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned. \r | |
131 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then \r | |
132 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors \r | |
133 | is returned in NumberOfProcessors, the number of currently enabled processor \r | |
134 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r | |
135 | \r | |
136 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
137 | instance.\r | |
138 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
139 | processors in the system, including the BSP\r | |
140 | and disabled APs.\r | |
141 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
142 | processors that exist in system, including\r | |
143 | the BSP.\r | |
144 | \r | |
145 | @retval EFI_SUCCESS The number of logical processors and enabled \r | |
146 | logical processors was retrieved.\r | |
147 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
148 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r | |
149 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL.\r | |
150 | \r | |
151 | **/\r | |
152 | EFI_STATUS\r | |
153 | EFIAPI\r | |
154 | CpuMpServicesGetNumberOfProcessors (\r | |
155 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
156 | OUT UINTN *NumberOfProcessors,\r | |
157 | OUT UINTN *NumberOfEnabledProcessors\r | |
158 | )\r | |
159 | {\r | |
160 | if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {\r | |
161 | return EFI_INVALID_PARAMETER;\r | |
162 | }\r | |
163 | \r | |
164 | if (!IsBSP ()) {\r | |
165 | return EFI_DEVICE_ERROR;\r | |
166 | }\r | |
167 | \r | |
168 | *NumberOfProcessors = gMPSystem.NumberOfProcessors;\r | |
169 | *NumberOfEnabledProcessors = gMPSystem.NumberOfEnabledProcessors;\r | |
170 | return EFI_SUCCESS;\r | |
171 | }\r | |
172 | \r | |
173 | \r | |
174 | \r | |
175 | /**\r | |
176 | Gets detailed MP-related information on the requested processor at the\r | |
177 | instant this call is made. This service may only be called from the BSP.\r | |
178 | \r | |
179 | This service retrieves detailed MP-related information about any processor \r | |
180 | on the platform. Note the following:\r | |
181 | - The processor information may change during the course of a boot session.\r | |
182 | - The information presented here is entirely MP related.\r | |
183 | \r | |
184 | Information regarding the number of caches and their sizes, frequency of operation,\r | |
185 | slot numbers is all considered platform-related information and is not provided \r | |
186 | by this service.\r | |
187 | \r | |
188 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
189 | instance.\r | |
190 | @param[in] ProcessorNumber The handle number of processor.\r | |
191 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
192 | the requested processor is deposited.\r | |
193 | \r | |
194 | @retval EFI_SUCCESS Processor information was returned.\r | |
195 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
196 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
197 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
198 | ProcessorNumber does not exist in the platform.\r | |
199 | \r | |
200 | **/\r | |
201 | EFI_STATUS\r | |
202 | EFIAPI\r | |
203 | CpuMpServicesGetProcessorInfo (\r | |
204 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
205 | IN UINTN ProcessorNumber,\r | |
206 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
207 | )\r | |
208 | {\r | |
209 | if (ProcessorInfoBuffer == NULL) {\r | |
210 | return EFI_INVALID_PARAMETER;\r | |
211 | }\r | |
212 | \r | |
213 | if (!IsBSP ()) {\r | |
214 | return EFI_DEVICE_ERROR;\r | |
215 | }\r | |
216 | \r | |
217 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r | |
218 | return EFI_NOT_FOUND;\r | |
219 | }\r | |
220 | \r | |
221 | CopyMem (ProcessorInfoBuffer, &gMPSystem.ProcessorData[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));\r | |
222 | return EFI_SUCCESS;\r | |
223 | }\r | |
224 | \r | |
225 | \r | |
226 | /**\r | |
227 | This service executes a caller provided function on all enabled APs. APs can \r | |
228 | run either simultaneously or one at a time in sequence. This service supports \r | |
229 | both blocking and non-blocking requests. The non-blocking requests use EFI \r | |
230 | events so the BSP can detect when the APs have finished. This service may only \r | |
231 | be called from the BSP.\r | |
232 | \r | |
233 | This function is used to dispatch all the enabled APs to the function specified \r | |
234 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned \r | |
235 | immediately and Procedure is not started on any AP.\r | |
236 | \r | |
237 | If SingleThread is TRUE, all the enabled APs execute the function specified by \r | |
238 | Procedure one by one, in ascending order of processor handle number. Otherwise, \r | |
239 | all the enabled APs execute the function specified by Procedure simultaneously.\r | |
240 | \r | |
241 | If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all \r | |
242 | APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking \r | |
243 | mode, and the BSP returns from this service without waiting for APs. If a \r | |
244 | non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT \r | |
245 | is signaled, then EFI_UNSUPPORTED must be returned.\r | |
246 | \r | |
247 | If the timeout specified by TimeoutInMicroseconds expires before all APs return \r | |
248 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs \r | |
249 | are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
250 | and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its \r | |
251 | content points to the list of processor handle numbers in which Procedure was \r | |
252 | terminated.\r | |
253 | \r | |
254 | Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() \r | |
255 | to make sure that the nature of the code that is executed on the BSP and the \r | |
256 | dispatched APs is well controlled. The MP Services Protocol does not guarantee \r | |
257 | that the Procedure function is MP-safe. Hence, the tasks that can be run in \r | |
258 | parallel are limited to certain independent tasks and well-controlled exclusive \r | |
259 | code. EFI services and protocols may not be called by APs unless otherwise \r | |
260 | specified.\r | |
261 | \r | |
262 | In blocking execution mode, BSP waits until all APs finish or \r | |
263 | TimeoutInMicroseconds expires.\r | |
264 | \r | |
265 | In non-blocking execution mode, BSP is freed to return to the caller and then \r | |
266 | proceed to the next task without having to wait for APs. The following \r | |
267 | sequence needs to occur in a non-blocking execution mode:\r | |
268 | \r | |
269 | -# The caller that intends to use this MP Services Protocol in non-blocking \r | |
270 | mode creates WaitEvent by calling the EFI CreateEvent() service. The caller \r | |
271 | invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent \r | |
272 | is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests \r | |
273 | the function specified by Procedure to be started on all the enabled APs, \r | |
274 | and releases the BSP to continue with other tasks.\r | |
275 | -# The caller can use the CheckEvent() and WaitForEvent() services to check \r | |
276 | the state of the WaitEvent created in step 1.\r | |
277 | -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP \r | |
278 | Service signals WaitEvent by calling the EFI SignalEvent() function. If \r | |
279 | FailedCpuList is not NULL, its content is available when WaitEvent is \r | |
280 | signaled. If all APs returned from Procedure prior to the timeout, then \r | |
281 | FailedCpuList is set to NULL. If not all APs return from Procedure before \r | |
282 | the timeout, then FailedCpuList is filled in with the list of the failed \r | |
283 | APs. The buffer is allocated by MP Service Protocol using AllocatePool(). \r | |
284 | It is the caller's responsibility to free the buffer with FreePool() service.\r | |
285 | -# This invocation of SignalEvent() function informs the caller that invoked\r | |
286 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r | |
287 | the specified task or a timeout occurred. The contents of FailedCpuList \r | |
288 | can be examined to determine which APs did not complete the specified task \r | |
289 | prior to the timeout.\r | |
290 | \r | |
291 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
292 | instance.\r | |
293 | @param[in] Procedure A pointer to the function to be run on \r | |
294 | enabled APs of the system. See type\r | |
295 | EFI_AP_PROCEDURE.\r | |
296 | @param[in] SingleThread If TRUE, then all the enabled APs execute \r | |
297 | the function specified by Procedure one by \r | |
298 | one, in ascending order of processor handle \r | |
299 | number. If FALSE, then all the enabled APs \r | |
300 | execute the function specified by Procedure\r | |
301 | simultaneously.\r | |
302 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
303 | service. If it is NULL, then execute in \r | |
304 | blocking mode. BSP waits until all APs finish \r | |
305 | or TimeoutInMicroseconds expires. If it's \r | |
306 | not NULL, then execute in non-blocking mode. \r | |
307 | BSP requests the function specified by \r | |
308 | Procedure to be started on all the enabled \r | |
309 | APs, and go on executing immediately. If \r | |
310 | all return from Procedure, or TimeoutInMicroseconds\r | |
311 | expires, this event is signaled. The BSP \r | |
312 | can use the CheckEvent() or WaitForEvent() \r | |
313 | services to check the state of event. Type \r | |
314 | EFI_EVENT is defined in CreateEvent() in \r | |
315 | the Unified Extensible Firmware Interface \r | |
316 | Specification. \r | |
317 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for \r | |
318 | APs to return from Procedure, either for \r | |
319 | blocking or non-blocking mode. Zero means \r | |
320 | infinity. If the timeout expires before \r | |
321 | all APs return from Procedure, then Procedure\r | |
322 | on the failed APs is terminated. All enabled \r | |
323 | APs are available for next function assigned \r | |
324 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() \r | |
325 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
326 | If the timeout expires in blocking mode, \r | |
327 | BSP returns EFI_TIMEOUT. If the timeout \r | |
328 | expires in non-blocking mode, WaitEvent \r | |
329 | is signaled with SignalEvent().\r | |
330 | @param[in] ProcedureArgument The parameter passed into Procedure for \r | |
331 | all APs.\r | |
332 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise, \r | |
333 | if all APs finish successfully, then its \r | |
334 | content is set to NULL. If not all APs \r | |
335 | finish before timeout expires, then its \r | |
336 | content is set to address of the buffer \r | |
337 | holding handle numbers of the failed APs. \r | |
338 | The buffer is allocated by MP Service Protocol, \r | |
339 | and it's the caller's responsibility to \r | |
340 | free the buffer with FreePool() service.\r | |
341 | In blocking mode, it is ready for consumption \r | |
342 | when the call returns. In non-blocking mode, \r | |
343 | it is ready when WaitEvent is signaled. The \r | |
344 | list of failed CPU is terminated by \r | |
345 | END_OF_CPU_LIST.\r | |
346 | \r | |
347 | @retval EFI_SUCCESS In blocking mode, all APs have finished before \r | |
348 | the timeout expired.\r | |
349 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched \r | |
350 | to all enabled APs.\r | |
351 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the \r | |
352 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was \r | |
353 | signaled.\r | |
354 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
355 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
356 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
357 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before \r | |
358 | all enabled APs have finished.\r | |
359 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
360 | \r | |
361 | **/\r | |
362 | EFI_STATUS\r | |
363 | EFIAPI\r | |
364 | CpuMpServicesStartupAllAps (\r | |
365 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
366 | IN EFI_AP_PROCEDURE Procedure,\r | |
367 | IN BOOLEAN SingleThread,\r | |
368 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
369 | IN UINTN TimeoutInMicroseconds,\r | |
370 | IN VOID *ProcedureArgument OPTIONAL,\r | |
371 | OUT UINTN **FailedCpuList OPTIONAL\r | |
372 | )\r | |
373 | {\r | |
374 | EFI_STATUS Status;\r | |
375 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
376 | UINTN *FailledList;\r | |
377 | UINTN FailedListIndex;\r | |
378 | UINTN ListIndex;\r | |
379 | UINTN Number;\r | |
380 | UINTN NextNumber;\r | |
381 | PROCESSOR_STATE APInitialState;\r | |
382 | PROCESSOR_STATE ProcessorState;\r | |
383 | INTN Timeout;\r | |
384 | \r | |
385 | \r | |
386 | if (!IsBSP ()) {\r | |
387 | return EFI_DEVICE_ERROR;\r | |
388 | }\r | |
389 | \r | |
390 | if (gMPSystem.NumberOfProcessors == 1) {\r | |
391 | return EFI_NOT_STARTED;\r | |
392 | }\r | |
393 | \r | |
394 | if (Procedure == NULL) {\r | |
395 | return EFI_INVALID_PARAMETER;\r | |
396 | }\r | |
397 | \r | |
398 | if ((WaitEvent != NULL) && gReadToBoot) {\r | |
399 | return EFI_UNSUPPORTED;\r | |
400 | }\r | |
401 | \r | |
402 | \r | |
403 | if (FailedCpuList != NULL) {\r | |
404 | FailledList = AllocatePool ((gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN));\r | |
405 | SetMemN (FailledList, (gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN), END_OF_CPU_LIST);\r | |
406 | FailedListIndex = 0;\r | |
407 | *FailedCpuList = FailledList;\r | |
408 | }\r | |
409 | \r | |
410 | Timeout = TimeoutInMicroseconds;\r | |
411 | \r | |
412 | ListIndex = 0;\r | |
413 | ProcessorData = NULL;\r | |
414 | \r | |
415 | gMPSystem.FinishCount = 0;\r | |
416 | gMPSystem.StartCount = 0;\r | |
417 | APInitialState = CPU_STATE_READY;\r | |
418 | \r | |
419 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
420 | ProcessorData = &gMPSystem.ProcessorData[Number];\r | |
421 | \r | |
422 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
423 | // Skip BSP\r | |
424 | continue;\r | |
425 | }\r | |
426 | \r | |
427 | //\r | |
428 | // Get APs prepared, and put failing APs into FailedCpuList\r | |
429 | // if "SingleThread", only 1 AP will put to ready state, other AP will be put to ready\r | |
430 | // state 1 by 1, until the previous 1 finished its task\r | |
431 | // if not "SingleThread", all APs are put to ready state from the beginning\r | |
432 | //\r | |
433 | if (ProcessorData->State == CPU_STATE_IDLE) {\r | |
434 | gMPSystem.StartCount++;\r | |
435 | \r | |
436 | gPthread->MutextLock (&ProcessorData->StateLock);\r | |
437 | ProcessorData->State = APInitialState;\r | |
438 | gPthread->MutexUnlock (&ProcessorData->StateLock);\r | |
439 | \r | |
440 | if (SingleThread) {\r | |
441 | APInitialState = CPU_STATE_BLOCKED;\r | |
442 | }\r | |
443 | \r | |
444 | } else if (FailedCpuList != NULL) {\r | |
445 | FailledList[FailedListIndex++] = Number;\r | |
446 | ListIndex++;\r | |
447 | }\r | |
448 | }\r | |
449 | \r | |
450 | if (FailedCpuList != NULL) {\r | |
451 | if (FailedListIndex == 0) {\r | |
452 | FreePool (*FailedCpuList);\r | |
453 | *FailedCpuList = NULL;\r | |
454 | }\r | |
455 | }\r | |
456 | \r | |
457 | while (TRUE) {\r | |
458 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
459 | ProcessorData = &gMPSystem.ProcessorData[Number]; \r | |
460 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
461 | // Skip BSP\r | |
462 | continue;\r | |
463 | }\r | |
464 | \r | |
465 | gPthread->MutextLock (ProcessorData->StateLock);\r | |
466 | ProcessorState = ProcessorData->State;\r | |
467 | gPthread->MutexUnlock (ProcessorData->StateLock);\r | |
468 | \r | |
469 | switch (ProcessorState) {\r | |
470 | case CPU_STATE_READY:\r | |
471 | SetApProcedure (ProcessorData, Procedure, ProcedureArgument);\r | |
472 | break;\r | |
473 | \r | |
474 | case CPU_STATE_FINISHED:\r | |
475 | gMPSystem.FinishCount++;\r | |
476 | if (SingleThread) {\r | |
477 | Status = GetNextBlockedNumber (&NextNumber);\r | |
478 | if (!EFI_ERROR (Status)) {\r | |
479 | gMPSystem.ProcessorData[NextNumber].State = CPU_STATE_READY;\r | |
480 | }\r | |
481 | }\r | |
482 | \r | |
483 | ProcessorData->State = CPU_STATE_IDLE;\r | |
484 | break;\r | |
485 | \r | |
486 | default:\r | |
487 | break;\r | |
488 | }\r | |
489 | }\r | |
490 | \r | |
491 | if (gMPSystem.FinishCount == gMPSystem.StartCount) {\r | |
492 | return EFI_SUCCESS;\r | |
493 | }\r | |
494 | \r | |
495 | if ((TimeoutInMicroseconds != 0) && (Timeout < 0)) {\r | |
496 | //\r | |
497 | // Save data into private data structure, and create timer to poll AP state before exiting\r | |
498 | //\r | |
499 | gMPSystem.Procedure = Procedure;\r | |
500 | gMPSystem.ProcedureArgument = ProcedureArgument;\r | |
501 | gMPSystem.WaitEvent = WaitEvent;\r | |
502 | \r | |
503 | Status = gBS->SetTimer (\r | |
504 | gMPSystem.CheckAllAPsEvent,\r | |
505 | TimerPeriodic,\r | |
506 | gPollInterval\r | |
507 | );\r | |
508 | return EFI_TIMEOUT;\r | |
509 | }\r | |
510 | \r | |
511 | gBS->Stall (gPollInterval);\r | |
512 | Timeout -= gPollInterval;\r | |
513 | }\r | |
514 | \r | |
515 | return EFI_SUCCESS;\r | |
516 | }\r | |
517 | \r | |
518 | \r | |
519 | /**\r | |
520 | This service lets the caller get one enabled AP to execute a caller-provided \r | |
521 | function. The caller can request the BSP to either wait for the completion \r | |
522 | of the AP or just proceed with the next task by using the EFI event mechanism. \r | |
523 | See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non-blocking \r | |
524 | execution support. This service may only be called from the BSP.\r | |
525 | \r | |
526 | This function is used to dispatch one enabled AP to the function specified by \r | |
527 | Procedure passing in the argument specified by ProcedureArgument. If WaitEvent \r | |
528 | is NULL, execution is in blocking mode. The BSP waits until the AP finishes or \r | |
529 | TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode. \r | |
530 | BSP proceeds to the next task without waiting for the AP. If a non-blocking mode \r | |
531 | is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled, \r | |
532 | then EFI_UNSUPPORTED must be returned.\r | |
533 | \r | |
534 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns \r | |
535 | from Procedure, then execution of Procedure by the AP is terminated. The AP is \r | |
536 | available for subsequent calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and \r | |
537 | EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
538 | \r | |
539 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
540 | instance.\r | |
541 | @param[in] Procedure A pointer to the function to be run on \r | |
542 | enabled APs of the system. See type\r | |
543 | EFI_AP_PROCEDURE.\r | |
544 | @param[in] ProcessorNumber The handle number of the AP. The range is \r | |
545 | from 0 to the total number of logical\r | |
546 | processors minus 1. The total number of \r | |
547 | logical processors can be retrieved by\r | |
548 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
549 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
550 | service. If it is NULL, then execute in \r | |
551 | blocking mode. BSP waits until all APs finish \r | |
552 | or TimeoutInMicroseconds expires. If it's \r | |
553 | not NULL, then execute in non-blocking mode. \r | |
554 | BSP requests the function specified by \r | |
555 | Procedure to be started on all the enabled \r | |
556 | APs, and go on executing immediately. If \r | |
557 | all return from Procedure or TimeoutInMicroseconds\r | |
558 | expires, this event is signaled. The BSP \r | |
559 | can use the CheckEvent() or WaitForEvent() \r | |
560 | services to check the state of event. Type \r | |
561 | EFI_EVENT is defined in CreateEvent() in \r | |
562 | the Unified Extensible Firmware Interface \r | |
563 | Specification. \r | |
564 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for \r | |
565 | APs to return from Procedure, either for \r | |
566 | blocking or non-blocking mode. Zero means \r | |
567 | infinity. If the timeout expires before \r | |
568 | all APs return from Procedure, then Procedure\r | |
569 | on the failed APs is terminated. All enabled \r | |
570 | APs are available for next function assigned \r | |
571 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() \r | |
572 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
573 | If the timeout expires in blocking mode, \r | |
574 | BSP returns EFI_TIMEOUT. If the timeout \r | |
575 | expires in non-blocking mode, WaitEvent \r | |
576 | is signaled with SignalEvent().\r | |
577 | @param[in] ProcedureArgument The parameter passed into Procedure for \r | |
578 | all APs.\r | |
579 | @param[out] Finished If NULL, this parameter is ignored. In \r | |
580 | blocking mode, this parameter is ignored.\r | |
581 | In non-blocking mode, if AP returns from \r | |
582 | Procedure before the timeout expires, its\r | |
583 | content is set to TRUE. Otherwise, the \r | |
584 | value is set to FALSE. The caller can\r | |
585 | determine if the AP returned from Procedure \r | |
586 | by evaluating this value.\r | |
587 | \r | |
588 | @retval EFI_SUCCESS In blocking mode, specified AP finished before \r | |
589 | the timeout expires.\r | |
590 | @retval EFI_SUCCESS In non-blocking mode, the function has been \r | |
591 | dispatched to specified AP.\r | |
592 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the \r | |
593 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was \r | |
594 | signaled.\r | |
595 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
596 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before \r | |
597 | the specified AP has finished.\r | |
598 | @retval EFI_NOT_READY The specified AP is busy.\r | |
599 | @retval EFI_NOT_FOUND The processor with the handle specified by \r | |
600 | ProcessorNumber does not exist.\r | |
601 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
602 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
603 | \r | |
604 | **/\r | |
605 | EFI_STATUS\r | |
606 | EFIAPI\r | |
607 | CpuMpServicesStartupThisAP (\r | |
608 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
609 | IN EFI_AP_PROCEDURE Procedure,\r | |
610 | IN UINTN ProcessorNumber,\r | |
611 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
612 | IN UINTN TimeoutInMicroseconds,\r | |
613 | IN VOID *ProcedureArgument OPTIONAL,\r | |
614 | OUT BOOLEAN *Finished OPTIONAL\r | |
615 | )\r | |
616 | {\r | |
617 | EFI_STATUS Status;\r | |
618 | INTN Timeout;\r | |
619 | \r | |
620 | if (!IsBSP ()) {\r | |
621 | return EFI_DEVICE_ERROR;\r | |
622 | }\r | |
623 | \r | |
624 | if (Procedure == NULL) {\r | |
625 | return EFI_INVALID_PARAMETER;\r | |
626 | }\r | |
627 | \r | |
628 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r | |
629 | return EFI_NOT_FOUND;\r | |
630 | }\r | |
631 | \r | |
632 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
633 | return EFI_INVALID_PARAMETER;\r | |
634 | }\r | |
635 | \r | |
636 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r | |
637 | return EFI_NOT_READY;\r | |
638 | }\r | |
639 | \r | |
640 | if ((WaitEvent != NULL) && gReadToBoot) {\r | |
641 | return EFI_UNSUPPORTED;\r | |
642 | }\r | |
643 | \r | |
644 | Timeout = TimeoutInMicroseconds;\r | |
645 | \r | |
646 | gMPSystem.StartCount = 1;\r | |
647 | gMPSystem.FinishCount = 0;\r | |
648 | \r | |
649 | SetApProcedure (&gMPSystem.ProcessorData[ProcessorNumber], Procedure, ProcedureArgument);\r | |
650 | \r | |
651 | while (TRUE) {\r | |
652 | gPthread->MutextLock (&gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
653 | if (gMPSystem.ProcessorData[ProcessorNumber].State == CPU_STATE_FINISHED) {\r | |
654 | gMPSystem.ProcessorData[ProcessorNumber].State = CPU_STATE_IDLE;\r | |
655 | gPthread->MutexUnlock (&gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
656 | break;\r | |
657 | }\r | |
658 | \r | |
659 | gPthread->MutexUnlock (&gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
660 | \r | |
661 | if ((TimeoutInMicroseconds != 0) && (Timeout < 0)) {\r | |
662 | gMPSystem.WaitEvent = WaitEvent;\r | |
663 | Status = gBS->SetTimer (\r | |
664 | gMPSystem.ProcessorData[ProcessorNumber].CheckThisAPEvent,\r | |
665 | TimerPeriodic,\r | |
666 | gPollInterval\r | |
667 | );\r | |
668 | return EFI_TIMEOUT;\r | |
669 | }\r | |
670 | \r | |
671 | gBS->Stall (gPollInterval);\r | |
672 | Timeout -= gPollInterval;\r | |
673 | }\r | |
674 | \r | |
675 | return EFI_SUCCESS;\r | |
676 | \r | |
677 | }\r | |
678 | \r | |
679 | \r | |
680 | /**\r | |
681 | This service switches the requested AP to be the BSP from that point onward. \r | |
682 | This service changes the BSP for all purposes. This call can only be performed \r | |
683 | by the current BSP.\r | |
684 | \r | |
685 | This service switches the requested AP to be the BSP from that point onward. \r | |
686 | This service changes the BSP for all purposes. The new BSP can take over the \r | |
687 | execution of the old BSP and continue seamlessly from where the old one left \r | |
688 | off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT \r | |
689 | is signaled.\r | |
690 | \r | |
691 | If the BSP cannot be switched prior to the return from this service, then \r | |
692 | EFI_UNSUPPORTED must be returned.\r | |
693 | \r | |
694 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
695 | @param[in] ProcessorNumber The handle number of AP that is to become the new \r | |
696 | BSP. The range is from 0 to the total number of \r | |
697 | logical processors minus 1. The total number of \r | |
698 | logical processors can be retrieved by\r | |
699 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
700 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an \r | |
701 | enabled AP. Otherwise, it will be disabled.\r | |
702 | \r | |
703 | @retval EFI_SUCCESS BSP successfully switched.\r | |
704 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to \r | |
705 | this service returning.\r | |
706 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
707 | @retval EFI_SUCCESS The calling processor is an AP.\r | |
708 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
709 | ProcessorNumber does not exist.\r | |
710 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or \r | |
711 | a disabled AP.\r | |
712 | @retval EFI_NOT_READY The specified AP is busy.\r | |
713 | \r | |
714 | **/\r | |
715 | EFI_STATUS\r | |
716 | EFIAPI\r | |
717 | CpuMpServicesSwitchBSP (\r | |
718 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
719 | IN UINTN ProcessorNumber,\r | |
720 | IN BOOLEAN EnableOldBSP\r | |
721 | )\r | |
722 | {\r | |
723 | UINTN Index;\r | |
724 | \r | |
725 | if (!IsBSP ()) {\r | |
726 | return EFI_DEVICE_ERROR;\r | |
727 | }\r | |
728 | \r | |
729 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r | |
730 | return EFI_NOT_FOUND;\r | |
731 | }\r | |
732 | \r | |
733 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r | |
734 | return EFI_INVALID_PARAMETER;\r | |
735 | }\r | |
736 | \r | |
737 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
738 | return EFI_INVALID_PARAMETER;\r | |
739 | }\r | |
740 | \r | |
741 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r | |
742 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
743 | break;\r | |
744 | }\r | |
745 | }\r | |
746 | ASSERT (Index != gMPSystem.NumberOfProcessors);\r | |
747 | \r | |
748 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r | |
749 | return EFI_NOT_READY;\r | |
750 | }\r | |
751 | \r | |
752 | // Skip for now as we need switch a bunch of stack stuff around and it's complex\r | |
753 | // May not be worth it?\r | |
754 | return EFI_NOT_READY;\r | |
755 | }\r | |
756 | \r | |
757 | \r | |
758 | /**\r | |
759 | This service lets the caller enable or disable an AP from this point onward. \r | |
760 | This service may only be called from the BSP.\r | |
761 | \r | |
762 | This service allows the caller enable or disable an AP from this point onward. \r | |
763 | The caller can optionally specify the health status of the AP by Health. If \r | |
764 | an AP is being disabled, then the state of the disabled AP is implementation \r | |
765 | dependent. If an AP is enabled, then the implementation must guarantee that a \r | |
766 | complete initialization sequence is performed on the AP, so the AP is in a state \r | |
767 | that is compatible with an MP operating system. This service may not be supported \r | |
768 | after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled.\r | |
769 | \r | |
770 | If the enable or disable AP operation cannot be completed prior to the return \r | |
771 | from this service, then EFI_UNSUPPORTED must be returned.\r | |
772 | \r | |
773 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
774 | @param[in] ProcessorNumber The handle number of AP that is to become the new \r | |
775 | BSP. The range is from 0 to the total number of \r | |
776 | logical processors minus 1. The total number of \r | |
777 | logical processors can be retrieved by\r | |
778 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
779 | @param[in] EnableAP Specifies the new state for the processor for \r | |
780 | enabled, FALSE for disabled.\r | |
781 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies \r | |
782 | the new health status of the AP. This flag \r | |
783 | corresponds to StatusFlag defined in \r | |
784 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only \r | |
785 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other \r | |
786 | bits are ignored. If it is NULL, this parameter \r | |
787 | is ignored.\r | |
788 | \r | |
789 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
790 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed \r | |
791 | prior to this service returning.\r | |
792 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
793 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
794 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
795 | does not exist.\r | |
796 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
797 | \r | |
798 | **/\r | |
799 | EFI_STATUS\r | |
800 | EFIAPI\r | |
801 | CpuMpServicesEnableDisableAP (\r | |
802 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
803 | IN UINTN ProcessorNumber,\r | |
804 | IN BOOLEAN EnableAP,\r | |
805 | IN UINT32 *HealthFlag OPTIONAL\r | |
806 | )\r | |
807 | {\r | |
808 | if (!IsBSP ()) {\r | |
809 | return EFI_DEVICE_ERROR;\r | |
810 | }\r | |
811 | \r | |
812 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r | |
813 | return EFI_NOT_FOUND;\r | |
814 | }\r | |
815 | \r | |
816 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
817 | return EFI_INVALID_PARAMETER;\r | |
818 | } \r | |
819 | \r | |
820 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r | |
821 | return EFI_UNSUPPORTED;\r | |
822 | }\r | |
823 | \r | |
824 | gPthread->MutextLock (&gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
825 | \r | |
826 | if (EnableAP) {\r | |
827 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0 ) {\r | |
828 | gMPSystem.NumberOfEnabledProcessors++;\r | |
829 | }\r | |
830 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_ENABLED_BIT;\r | |
831 | } else {\r | |
832 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == PROCESSOR_ENABLED_BIT ) {\r | |
833 | gMPSystem.NumberOfEnabledProcessors--;\r | |
834 | }\r | |
835 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_ENABLED_BIT;\r | |
836 | }\r | |
837 | \r | |
838 | if (HealthFlag != NULL) {\r | |
839 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_HEALTH_STATUS_BIT;\r | |
840 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT);\r | |
841 | }\r | |
842 | \r | |
843 | gPthread->MutexUnlock (&gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
844 | \r | |
845 | return EFI_SUCCESS;\r | |
846 | }\r | |
847 | \r | |
848 | \r | |
849 | /**\r | |
850 | This return the handle number for the calling processor. This service may be \r | |
851 | called from the BSP and APs.\r | |
852 | \r | |
853 | This service returns the processor handle number for the calling processor. \r | |
854 | The returned value is in the range from 0 to the total number of logical \r | |
855 | processors minus 1. The total number of logical processors can be retrieved \r | |
856 | with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service may be \r | |
857 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER \r | |
858 | is returned. Otherwise, the current processors handle number is returned in \r | |
859 | ProcessorNumber, and EFI_SUCCESS is returned.\r | |
860 | \r | |
861 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
862 | @param[in] ProcessorNumber The handle number of AP that is to become the new \r | |
863 | BSP. The range is from 0 to the total number of \r | |
864 | logical processors minus 1. The total number of \r | |
865 | logical processors can be retrieved by\r | |
866 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
867 | \r | |
868 | @retval EFI_SUCCESS The current processor handle number was returned \r | |
869 | in ProcessorNumber.\r | |
870 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
871 | \r | |
872 | **/\r | |
873 | EFI_STATUS\r | |
874 | EFIAPI\r | |
875 | CpuMpServicesWhoAmI (\r | |
876 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
877 | OUT UINTN *ProcessorNumber\r | |
878 | )\r | |
879 | {\r | |
880 | UINTN Index;\r | |
881 | UINT64 ProcessorId;\r | |
882 | \r | |
883 | if (ProcessorNumber == NULL) {\r | |
884 | return EFI_INVALID_PARAMETER;\r | |
885 | }\r | |
886 | \r | |
887 | ProcessorId = gPthread->Self ();\r | |
888 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r | |
889 | if (gMPSystem.ProcessorData[Index].Info.ProcessorId == ProcessorId) {\r | |
890 | break;\r | |
891 | }\r | |
892 | }\r | |
893 | \r | |
894 | *ProcessorNumber = Index;\r | |
895 | return EFI_SUCCESS;\r | |
896 | }\r | |
897 | \r | |
898 | \r | |
899 | \r | |
900 | EFI_MP_SERVICES_PROTOCOL mMpSercicesTemplate = {\r | |
901 | CpuMpServicesGetNumberOfProcessors,\r | |
902 | CpuMpServicesGetProcessorInfo,\r | |
903 | CpuMpServicesStartupAllAps,\r | |
904 | CpuMpServicesStartupThisAP,\r | |
905 | CpuMpServicesSwitchBSP,\r | |
906 | CpuMpServicesEnableDisableAP,\r | |
907 | CpuMpServicesWhoAmI\r | |
908 | };\r | |
909 | \r | |
910 | \r | |
911 | \r | |
912 | /*++\r | |
913 | If timeout occurs in StartupAllAps(), a timer is set, which invokes this\r | |
914 | procedure periodically to check whether all APs have finished.\r | |
915 | \r | |
916 | \r | |
917 | --*/\r | |
918 | VOID\r | |
919 | EFIAPI\r | |
920 | CpuCheckAllAPsStatus (\r | |
921 | IN EFI_EVENT Event,\r | |
922 | IN VOID *Context\r | |
923 | )\r | |
924 | {\r | |
925 | UINTN ProcessorNumber;\r | |
926 | UINTN NextNumber;\r | |
927 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
928 | PROCESSOR_DATA_BLOCK *NextData;\r | |
929 | EFI_STATUS Status;\r | |
930 | PROCESSOR_STATE ProcessorState;\r | |
931 | \r | |
224e1333 | 932 | ProcessorData = (PROCESSOR_DATA_BLOCK *) Context;\r |
933 | \r | |
c4671a67 | 934 | for (ProcessorNumber = 0; ProcessorNumber < gMPSystem.NumberOfProcessors; ProcessorNumber++) {\r |
935 | if ((ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
936 | // Skip BSP\r | |
937 | continue;\r | |
938 | }\r | |
939 | \r | |
940 | // This is an Interrupt Service routine.\r | |
941 | // This can grab a lock that is held in a non-interrupt\r | |
942 | // context. Meaning deadlock. Which is a bad thing.\r | |
943 | // So, try lock it. If we can get it, cool, do our thing.\r | |
944 | // otherwise, just dump out & try again on the next iteration.\r | |
945 | Status = gPthread->MutexTryLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
946 | if (EFI_ERROR(Status)) {\r | |
947 | return;\r | |
948 | }\r | |
949 | ProcessorState = gMPSystem.ProcessorData[ProcessorNumber].State;\r | |
950 | gPthread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
951 | \r | |
952 | switch (ProcessorState) {\r | |
953 | case CPU_STATE_READY:\r | |
954 | SetApProcedure (ProcessorData, gMPSystem.Procedure, gMPSystem.ProcedureArgument);\r | |
955 | break;\r | |
956 | \r | |
957 | case CPU_STATE_FINISHED:\r | |
958 | if (gMPSystem.SingleThread) {\r | |
959 | Status = GetNextBlockedNumber (&NextNumber);\r | |
960 | if (!EFI_ERROR (Status)) {\r | |
961 | NextData = &gMPSystem.ProcessorData[NextNumber];\r | |
962 | \r | |
963 | gPthread->MutextLock (&NextData->ProcedureLock);\r | |
964 | NextData->State = CPU_STATE_READY;\r | |
965 | gPthread->MutexUnlock (&NextData->ProcedureLock);\r | |
966 | \r | |
967 | SetApProcedure (NextData, gMPSystem.Procedure, gMPSystem.ProcedureArgument);\r | |
968 | }\r | |
969 | }\r | |
970 | \r | |
971 | gMPSystem.ProcessorData[ProcessorNumber].State = CPU_STATE_IDLE;\r | |
972 | gMPSystem.FinishCount++;\r | |
973 | break;\r | |
974 | \r | |
975 | default:\r | |
976 | break;\r | |
977 | }\r | |
978 | }\r | |
979 | \r | |
980 | if (gMPSystem.FinishCount == gMPSystem.StartCount) {\r | |
981 | gBS->SetTimer (\r | |
982 | gMPSystem.CheckAllAPsEvent,\r | |
983 | TimerCancel,\r | |
984 | 0\r | |
985 | );\r | |
986 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r | |
987 | }\r | |
988 | \r | |
989 | return ;\r | |
990 | }\r | |
991 | \r | |
992 | VOID\r | |
993 | EFIAPI\r | |
994 | CpuCheckThisAPStatus (\r | |
995 | IN EFI_EVENT Event,\r | |
996 | IN VOID *Context\r | |
997 | )\r | |
998 | {\r | |
999 | EFI_STATUS Status;\r | |
1000 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1001 | PROCESSOR_STATE ProcessorState;\r | |
1002 | \r | |
1003 | ProcessorData = (PROCESSOR_DATA_BLOCK *) Context;\r | |
1004 | \r | |
1005 | //\r | |
1006 | // rdar://6260979 - This is an Interrupt Service routine.\r | |
1007 | // this can grab a lock that is held in a non-interrupt\r | |
1008 | // context. Meaning deadlock. Which is a badddd thing.\r | |
1009 | // So, try lock it. If we can get it, cool, do our thing.\r | |
1010 | // otherwise, just dump out & try again on the next iteration.\r | |
1011 | //\r | |
1012 | Status = gPthread->MutexTryLock (ProcessorData->StateLock);\r | |
1013 | if (EFI_ERROR(Status)) {\r | |
1014 | return;\r | |
1015 | }\r | |
1016 | ProcessorState = ProcessorData->State;\r | |
1017 | gPthread->MutexUnlock (ProcessorData->StateLock);\r | |
1018 | \r | |
1019 | if (ProcessorState == CPU_STATE_FINISHED) {\r | |
1020 | Status = gBS->SetTimer (ProcessorData->CheckThisAPEvent, TimerCancel, 0);\r | |
1021 | ASSERT_EFI_ERROR (Status);\r | |
1022 | \r | |
1023 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r | |
1024 | ASSERT_EFI_ERROR (Status);\r | |
1025 | \r | |
1026 | gPthread->MutextLock (ProcessorData->StateLock);\r | |
1027 | ProcessorData->State = CPU_STATE_IDLE;\r | |
1028 | gPthread->MutexUnlock (ProcessorData->StateLock);\r | |
1029 | }\r | |
1030 | \r | |
1031 | return ;\r | |
1032 | }\r | |
1033 | \r | |
1034 | \r | |
1035 | /*++\r | |
1036 | This function is called by all processors (both BSP and AP) once and collects MP related data\r | |
1037 | \r | |
1038 | MPSystemData - Pointer to the data structure containing MP related data\r | |
1039 | BSP - TRUE if the CPU is BSP\r | |
1040 | \r | |
1041 | EFI_SUCCESS - Data for the processor collected and filled in\r | |
1042 | \r | |
1043 | --*/\r | |
1044 | EFI_STATUS\r | |
1045 | FillInProcessorInformation (\r | |
1046 | IN BOOLEAN BSP,\r | |
1047 | IN UINTN ProcessorNumber\r | |
1048 | )\r | |
1049 | {\r | |
1050 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1051 | \r | |
1052 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r | |
1053 | \r | |
1054 | gMPSystem.ProcessorData[ProcessorNumber].Info.ProcessorId = gPthread->Self ();\r | |
1055 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;\r | |
1056 | if (BSP) {\r | |
1057 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
1058 | }\r | |
1059 | \r | |
1060 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Package = ProcessorNumber;\r | |
1061 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Core = 0;\r | |
1062 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Thread = 0;\r | |
1063 | gMPSystem.ProcessorData[ProcessorNumber].State = BSP ? CPU_STATE_BUSY : CPU_STATE_IDLE;\r | |
1064 | \r | |
1065 | gMPSystem.ProcessorData[ProcessorNumber].Procedure = NULL;\r | |
1066 | gMPSystem.ProcessorData[ProcessorNumber].Parameter = NULL;\r | |
1067 | gMPSystem.ProcessorData[ProcessorNumber].StateLock = gPthread->MutexInit ();\r | |
1068 | gMPSystem.ProcessorData[ProcessorNumber].ProcedureLock = gPthread->MutexInit ();\r | |
1069 | \r | |
1070 | return EFI_SUCCESS;\r | |
1071 | }\r | |
1072 | \r | |
1073 | VOID *\r | |
1074 | EFIAPI\r | |
1075 | CpuDriverApIdolLoop (\r | |
1076 | VOID *Context\r | |
1077 | )\r | |
1078 | {\r | |
1079 | EFI_AP_PROCEDURE Procedure;\r | |
1080 | VOID *Parameter;\r | |
1081 | UINTN ProcessorNumber;\r | |
1082 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1083 | \r | |
1084 | ProcessorNumber = (UINTN)Context;\r | |
1085 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r | |
1086 | \r | |
1087 | ProcessorData->Info.ProcessorId = gPthread->Self ();\r | |
1088 | \r | |
1089 | while (TRUE) {\r | |
1090 | //\r | |
1091 | // Make a local copy on the stack to be extra safe\r | |
1092 | //\r | |
1093 | gPthread->MutextLock (ProcessorData->ProcedureLock);\r | |
1094 | Procedure = ProcessorData->Procedure;\r | |
1095 | Parameter = ProcessorData->Parameter;\r | |
1096 | gPthread->MutexUnlock (ProcessorData->ProcedureLock);\r | |
1097 | \r | |
1098 | if (Procedure != NULL) {\r | |
1099 | gPthread->MutextLock (ProcessorData->StateLock);\r | |
1100 | ProcessorData->State = CPU_STATE_BUSY;\r | |
1101 | gPthread->MutexUnlock (ProcessorData->StateLock);\r | |
1102 | \r | |
1103 | Procedure (Parameter);\r | |
1104 | \r | |
1105 | gPthread->MutextLock (ProcessorData->ProcedureLock);\r | |
1106 | ProcessorData->Procedure = NULL;\r | |
1107 | gPthread->MutexUnlock (ProcessorData->ProcedureLock);\r | |
1108 | \r | |
1109 | gPthread->MutextLock (ProcessorData->StateLock);\r | |
1110 | ProcessorData->State = CPU_STATE_FINISHED;\r | |
1111 | gPthread->MutexUnlock (ProcessorData->StateLock); \r | |
1112 | }\r | |
1113 | \r | |
1114 | // Poll 5 times a seconds, 200ms\r | |
1115 | // Don't want to burn too many system resources doing nothing.\r | |
1116 | gEmuThunk->Sleep (200);\r | |
1117 | }\r | |
1118 | \r | |
1119 | return 0;\r | |
1120 | }\r | |
1121 | \r | |
1122 | \r | |
1123 | EFI_STATUS\r | |
1124 | InitializeMpSystemData (\r | |
1125 | IN UINTN NumberOfProcessors\r | |
1126 | )\r | |
1127 | {\r | |
1128 | EFI_STATUS Status;\r | |
1129 | UINTN Index;\r | |
1130 | \r | |
1131 | \r | |
1132 | //\r | |
1133 | // Clear the data structure area first.\r | |
1134 | //\r | |
1135 | ZeroMem (&gMPSystem, sizeof (MP_SYSTEM_DATA));\r | |
1136 | \r | |
1137 | //\r | |
1138 | // First BSP fills and inits all known values, including it's own records.\r | |
1139 | //\r | |
1140 | gMPSystem.NumberOfProcessors = NumberOfProcessors;\r | |
1141 | gMPSystem.NumberOfEnabledProcessors = NumberOfProcessors;\r | |
1142 | \r | |
1143 | gMPSystem.ProcessorData = AllocateZeroPool (gMPSystem.NumberOfProcessors * sizeof (PROCESSOR_DATA_BLOCK));\r | |
1144 | ASSERT (gMPSystem.ProcessorData != NULL);\r | |
1145 | \r | |
1146 | FillInProcessorInformation (TRUE, 0);\r | |
1147 | \r | |
1148 | Status = gBS->CreateEvent (\r | |
1149 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1150 | TPL_CALLBACK,\r | |
1151 | CpuCheckAllAPsStatus,\r | |
1152 | NULL,\r | |
1153 | &gMPSystem.CheckAllAPsEvent\r | |
1154 | );\r | |
1155 | ASSERT_EFI_ERROR (Status);\r | |
1156 | \r | |
1157 | \r | |
1158 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r | |
1159 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
1160 | // Skip BSP\r | |
1161 | continue;\r | |
1162 | }\r | |
1163 | \r | |
1164 | FillInProcessorInformation (FALSE, Index);\r | |
1165 | \r | |
1166 | Status = gPthread->CreateThread (\r | |
1167 | (VOID *)&gMPSystem.ProcessorData[Index].Info.ProcessorId, \r | |
1168 | NULL,\r | |
1169 | CpuDriverApIdolLoop,\r | |
1170 | (VOID *)Index\r | |
1171 | );\r | |
1172 | \r | |
1173 | \r | |
1174 | Status = gBS->CreateEvent (\r | |
1175 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1176 | TPL_CALLBACK,\r | |
1177 | CpuCheckThisAPStatus,\r | |
1178 | (VOID *) &gMPSystem.ProcessorData[Index],\r | |
1179 | &gMPSystem.ProcessorData[Index].CheckThisAPEvent\r | |
1180 | );\r | |
1181 | }\r | |
1182 | \r | |
1183 | return EFI_SUCCESS;\r | |
1184 | }\r | |
1185 | \r | |
1186 | \r | |
1187 | \r | |
1188 | /**\r | |
1189 | Invoke a notification event\r | |
1190 | \r | |
1191 | @param Event Event whose notification function is being invoked.\r | |
1192 | @param Context The pointer to the notification function's context,\r | |
1193 | which is implementation-dependent.\r | |
1194 | \r | |
1195 | **/\r | |
1196 | VOID\r | |
1197 | EFIAPI\r | |
1198 | CpuReadToBootFunction (\r | |
1199 | IN EFI_EVENT Event,\r | |
1200 | IN VOID *Context\r | |
1201 | )\r | |
1202 | {\r | |
1203 | gReadToBoot = TRUE;\r | |
1204 | }\r | |
1205 | \r | |
1206 | \r | |
1207 | \r | |
1208 | EFI_STATUS\r | |
1209 | CpuMpServicesInit (\r | |
1210 | VOID\r | |
1211 | )\r | |
1212 | {\r | |
1213 | EFI_STATUS Status;\r | |
1214 | EFI_HANDLE Handle;\r | |
1215 | EMU_IO_THUNK_PROTOCOL *IoThunk;\r | |
1216 | UINTN MaxCpus;\r | |
c4671a67 | 1217 | \r |
1218 | MaxCpus = 1; // BSP\r | |
1219 | \r | |
1220 | IoThunk = GetIoThunkInstance (&gEmuPthreadThunkProtocolGuid, 0);\r | |
1221 | if (IoThunk != NULL) {\r | |
1222 | Status = IoThunk->Open (IoThunk);\r | |
1223 | if (!EFI_ERROR (Status)) {\r | |
1224 | if (IoThunk->ConfigString != NULL) {\r | |
1225 | MaxCpus += StrDecimalToUintn (IoThunk->ConfigString);\r | |
1226 | gPthread = IoThunk->Interface;\r | |
1227 | }\r | |
1228 | }\r | |
1229 | }\r | |
1230 | \r | |
1231 | if (MaxCpus == 1) {\r | |
1232 | // We are not MP so nothing to do\r | |
1233 | return EFI_SUCCESS;\r | |
1234 | }\r | |
1235 | \r | |
1236 | gPollInterval = PcdGet64 (PcdEmuMpServicesPollingInterval);\r | |
1237 | \r | |
1238 | Status = InitializeMpSystemData (MaxCpus);\r | |
1239 | if (EFI_ERROR (Status)) {\r | |
1240 | return Status;\r | |
1241 | }\r | |
1242 | \r | |
1243 | Status = EfiCreateEventReadyToBootEx (TPL_CALLBACK, CpuReadToBootFunction, NULL, &gReadToBootEvent);\r | |
1244 | ASSERT_EFI_ERROR (Status);\r | |
1245 | \r | |
1246 | //\r | |
1247 | // Now install the MP services protocol.\r | |
1248 | //\r | |
1249 | Handle = NULL;\r | |
1250 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1251 | &Handle,\r | |
1252 | &gEfiMpServiceProtocolGuid, &mMpSercicesTemplate,\r | |
1253 | NULL\r | |
1254 | );\r | |
1255 | return Status;\r | |
1256 | }\r | |
1257 | \r | |
1258 | \r |