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bf73cc4b 1/** @file\r
2 Public include file for Local APIC library.\r
3\r
4 Local APIC library assumes local APIC is enabled. It does not\r
5 handles cases where local APIC is disabled.\r
6\r
7f33d4f2 7 Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>\r
0acd8697 8 SPDX-License-Identifier: BSD-2-Clause-Patent\r
bf73cc4b 9\r
10**/\r
11\r
12#ifndef __LOCAL_APIC_LIB_H__\r
13#define __LOCAL_APIC_LIB_H__\r
14\r
15#define LOCAL_APIC_MODE_XAPIC 0x1 ///< xAPIC mode.\r
16#define LOCAL_APIC_MODE_X2APIC 0x2 ///< x2APIC mode.\r
17\r
a66e0c7d 18/**\r
19 Retrieve the base address of local APIC.\r
20\r
21 @return The base address of local APIC.\r
22\r
23**/\r
24UINTN\r
25EFIAPI\r
26GetLocalApicBaseAddress (\r
27 VOID\r
28 );\r
29\r
30/**\r
31 Set the base address of local APIC.\r
32\r
33 If BaseAddress is not aligned on a 4KB boundary, then ASSERT().\r
34\r
35 @param[in] BaseAddress Local APIC base address to be set.\r
36\r
37**/\r
38VOID\r
39EFIAPI\r
40SetLocalApicBaseAddress (\r
41 IN UINTN BaseAddress\r
42 );\r
43\r
bf73cc4b 44/**\r
45 Get the current local APIC mode.\r
46\r
47 If local APIC is disabled, then ASSERT.\r
48\r
49 @retval LOCAL_APIC_MODE_XAPIC current APIC mode is xAPIC.\r
50 @retval LOCAL_APIC_MODE_X2APIC current APIC mode is x2APIC.\r
51**/\r
52UINTN\r
53EFIAPI\r
54GetApicMode (\r
55 VOID\r
56 );\r
57\r
58/**\r
59 Set the current local APIC mode.\r
60\r
61 If the specified local APIC mode is not valid, then ASSERT.\r
62 If the specified local APIC mode can't be set as current, then ASSERT.\r
63\r
64 @param ApicMode APIC mode to be set.\r
9c71e1e0
JF
65\r
66 @note This API must not be called from an interrupt handler or SMI handler.\r
67 It may result in unpredictable behavior.\r
bf73cc4b 68**/\r
69VOID\r
70EFIAPI\r
71SetApicMode (\r
72 IN UINTN ApicMode\r
73 );\r
74\r
75/**\r
76 Get the initial local APIC ID of the executing processor assigned by hardware upon power on or reset.\r
77\r
6e3e4d70 78 In xAPIC mode, the initial local APIC ID may be different from current APIC ID.\r
7367cc6c 79 In x2APIC mode, the local APIC ID can't be changed and there is no concept of initial APIC ID. In this case,\r
bf73cc4b 80 the 32-bit local APIC ID is returned as initial APIC ID.\r
81\r
82 @return 32-bit initial local APIC ID of the executing processor.\r
83**/\r
84UINT32\r
85EFIAPI\r
86GetInitialApicId (\r
87 VOID\r
88 );\r
89\r
90/**\r
91 Get the local APIC ID of the executing processor.\r
92\r
93 @return 32-bit local APIC ID of the executing processor.\r
94**/\r
95UINT32\r
96EFIAPI\r
97GetApicId (\r
98 VOID\r
99 );\r
100\r
ae40aef1 101/**\r
102 Get the value of the local APIC version register.\r
103\r
104 @return the value of the local APIC version register.\r
105**/\r
106UINT32\r
107EFIAPI\r
108GetApicVersion (\r
109 VOID\r
110 );\r
111\r
112/**\r
113 Send a Fixed IPI to a specified target processor.\r
114\r
7367cc6c 115 This function returns after the IPI has been accepted by the target processor.\r
ae40aef1 116\r
117 @param ApicId The local APIC ID of the target processor.\r
118 @param Vector The vector number of the interrupt being sent.\r
119**/\r
120VOID\r
121EFIAPI\r
122SendFixedIpi (\r
123 IN UINT32 ApicId,\r
124 IN UINT8 Vector\r
125 );\r
126\r
127/**\r
128 Send a Fixed IPI to all processors excluding self.\r
129\r
7367cc6c 130 This function returns after the IPI has been accepted by the target processors.\r
ae40aef1 131\r
132 @param Vector The vector number of the interrupt being sent.\r
133**/\r
134VOID\r
135EFIAPI\r
136SendFixedIpiAllExcludingSelf (\r
137 IN UINT8 Vector\r
138 );\r
139\r
bf73cc4b 140/**\r
141 Send a SMI IPI to a specified target processor.\r
142\r
7367cc6c 143 This function returns after the IPI has been accepted by the target processor.\r
bf73cc4b 144\r
145 @param ApicId Specify the local APIC ID of the target processor.\r
146**/\r
147VOID\r
148EFIAPI\r
149SendSmiIpi (\r
150 IN UINT32 ApicId\r
151 );\r
152\r
153/**\r
154 Send a SMI IPI to all processors excluding self.\r
155\r
7367cc6c 156 This function returns after the IPI has been accepted by the target processors.\r
bf73cc4b 157**/\r
158VOID\r
159EFIAPI\r
160SendSmiIpiAllExcludingSelf (\r
161 VOID\r
162 );\r
163\r
164/**\r
165 Send an INIT IPI to a specified target processor.\r
166\r
7367cc6c 167 This function returns after the IPI has been accepted by the target processor.\r
bf73cc4b 168\r
169 @param ApicId Specify the local APIC ID of the target processor.\r
170**/\r
171VOID\r
172EFIAPI\r
173SendInitIpi (\r
174 IN UINT32 ApicId\r
175 );\r
176\r
177/**\r
178 Send an INIT IPI to all processors excluding self.\r
179\r
7367cc6c 180 This function returns after the IPI has been accepted by the target processors.\r
bf73cc4b 181**/\r
182VOID\r
183EFIAPI\r
184SendInitIpiAllExcludingSelf (\r
185 VOID\r
186 );\r
187\r
188/**\r
189 Send an INIT-Start-up-Start-up IPI sequence to a specified target processor.\r
190\r
7367cc6c 191 This function returns after the IPI has been accepted by the target processor.\r
bf73cc4b 192\r
193 if StartupRoutine >= 1M, then ASSERT.\r
194 if StartupRoutine is not multiple of 4K, then ASSERT.\r
195\r
196 @param ApicId Specify the local APIC ID of the target processor.\r
197 @param StartupRoutine Points to a start-up routine which is below 1M physical\r
198 address and 4K aligned.\r
199**/\r
200VOID\r
201EFIAPI\r
202SendInitSipiSipi (\r
203 IN UINT32 ApicId,\r
204 IN UINT32 StartupRoutine\r
205 );\r
206\r
207/**\r
208 Send an INIT-Start-up-Start-up IPI sequence to all processors excluding self.\r
209\r
7367cc6c 210 This function returns after the IPI has been accepted by the target processors.\r
bf73cc4b 211\r
212 if StartupRoutine >= 1M, then ASSERT.\r
213 if StartupRoutine is not multiple of 4K, then ASSERT.\r
214\r
215 @param StartupRoutine Points to a start-up routine which is below 1M physical\r
216 address and 4K aligned.\r
217**/\r
218VOID\r
219EFIAPI\r
220SendInitSipiSipiAllExcludingSelf (\r
221 IN UINT32 StartupRoutine\r
222 );\r
223\r
14e4ca25
MK
224/**\r
225 Initialize the state of the SoftwareEnable bit in the Local APIC\r
226 Spurious Interrupt Vector register.\r
227\r
228 @param Enable If TRUE, then set SoftwareEnable to 1\r
229 If FALSE, then set SoftwareEnable to 0.\r
230\r
231**/\r
232VOID\r
233EFIAPI\r
234InitializeLocalApicSoftwareEnable (\r
235 IN BOOLEAN Enable\r
236 );\r
237\r
bf73cc4b 238/**\r
239 Programming Virtual Wire Mode.\r
240\r
241 This function programs the local APIC for virtual wire mode following\r
242 the example described in chapter A.3 of the MP 1.4 spec.\r
243\r
244 IOxAPIC is not involved in this type of virtual wire mode.\r
245**/\r
246VOID\r
247EFIAPI\r
248ProgramVirtualWireMode (\r
249 VOID\r
250 );\r
251\r
b1b8c631 252/**\r
253 Disable LINT0 & LINT1 interrupts.\r
254\r
255 This function sets the mask flag in the LVT LINT0 & LINT1 registers.\r
256**/\r
257VOID\r
258EFIAPI\r
259DisableLvtInterrupts (\r
260 VOID\r
261 );\r
262\r
bf73cc4b 263/**\r
264 Read the initial count value from the init-count register.\r
265\r
266 @return The initial count value read from the init-count register.\r
267**/\r
268UINT32\r
269EFIAPI\r
270GetApicTimerInitCount (\r
271 VOID\r
272 );\r
273\r
274/**\r
275 Read the current count value from the current-count register.\r
276\r
277 @return The current count value read from the current-count register.\r
278**/\r
279UINT32\r
280EFIAPI\r
281GetApicTimerCurrentCount (\r
282 VOID\r
283 );\r
284\r
285/**\r
286 Initialize the local APIC timer.\r
287\r
288 The local APIC timer is initialized and enabled.\r
289\r
290 @param DivideValue The divide value for the DCR. It is one of 1,2,4,8,16,32,64,128.\r
291 If it is 0, then use the current divide value in the DCR.\r
292 @param InitCount The initial count value.\r
293 @param PeriodicMode If TRUE, timer mode is peridoic. Othewise, timer mode is one-shot.\r
294 @param Vector The timer interrupt vector number.\r
295**/\r
296VOID\r
297EFIAPI\r
298InitializeApicTimer (\r
299 IN UINTN DivideValue,\r
300 IN UINT32 InitCount,\r
301 IN BOOLEAN PeriodicMode,\r
302 IN UINT8 Vector\r
303 );\r
304\r
ae40aef1 305/**\r
306 Get the state of the local APIC timer.\r
307\r
308 @param DivideValue Return the divide value for the DCR. It is one of 1,2,4,8,16,32,64,128.\r
309 @param PeriodicMode Return the timer mode. If TRUE, timer mode is peridoic. Othewise, timer mode is one-shot.\r
310 @param Vector Return the timer interrupt vector number.\r
311**/\r
312VOID\r
313EFIAPI\r
314GetApicTimerState (\r
315 OUT UINTN *DivideValue OPTIONAL,\r
316 OUT BOOLEAN *PeriodicMode OPTIONAL,\r
317 OUT UINT8 *Vector OPTIONAL\r
318 );\r
319\r
bf73cc4b 320/**\r
321 Enable the local APIC timer interrupt.\r
322**/\r
323VOID\r
324EFIAPI\r
325EnableApicTimerInterrupt (\r
326 VOID\r
327 );\r
328\r
329/**\r
330 Disable the local APIC timer interrupt.\r
331**/\r
332VOID\r
333EFIAPI\r
334DisableApicTimerInterrupt (\r
335 VOID\r
336 );\r
337\r
338/**\r
339 Get the local APIC timer interrupt state.\r
340\r
341 @retval TRUE The local APIC timer interrupt is enabled.\r
342 @retval FALSE The local APIC timer interrupt is disabled.\r
343**/\r
344BOOLEAN\r
345EFIAPI\r
346GetApicTimerInterruptState (\r
347 VOID\r
348 );\r
349\r
350/**\r
351 Send EOI to the local APIC.\r
352**/\r
353VOID\r
354EFIAPI\r
355SendApicEoi (\r
356 VOID\r
357 );\r
358\r
5f867ad0 359/**\r
7367cc6c 360 Get the 32-bit address that a device should use to send a Message Signaled\r
5f867ad0 361 Interrupt (MSI) to the Local APIC of the currently executing processor.\r
362\r
363 @return 32-bit address used to send an MSI to the Local APIC.\r
364**/\r
365UINT32\r
7367cc6c 366EFIAPI\r
5f867ad0 367GetApicMsiAddress (\r
368 VOID\r
369 );\r
7367cc6c 370\r
5f867ad0 371/**\r
7367cc6c 372 Get the 64-bit data value that a device should use to send a Message Signaled\r
5f867ad0 373 Interrupt (MSI) to the Local APIC of the currently executing processor.\r
374\r
375 If Vector is not in range 0x10..0xFE, then ASSERT().\r
376 If DeliveryMode is not supported, then ASSERT().\r
7367cc6c
LG
377\r
378 @param Vector The 8-bit interrupt vector associated with the MSI.\r
5f867ad0 379 Must be in the range 0x10..0xFE\r
7367cc6c 380 @param DeliveryMode A 3-bit value that specifies how the recept of the MSI\r
5f867ad0 381 is handled. The only supported values are:\r
382 0: LOCAL_APIC_DELIVERY_MODE_FIXED\r
383 1: LOCAL_APIC_DELIVERY_MODE_LOWEST_PRIORITY\r
384 2: LOCAL_APIC_DELIVERY_MODE_SMI\r
385 4: LOCAL_APIC_DELIVERY_MODE_NMI\r
386 5: LOCAL_APIC_DELIVERY_MODE_INIT\r
387 7: LOCAL_APIC_DELIVERY_MODE_EXTINT\r
7367cc6c
LG
388\r
389 @param LevelTriggered TRUE specifies a level triggered interrupt.\r
5f867ad0 390 FALSE specifies an edge triggered interrupt.\r
391 @param AssertionLevel Ignored if LevelTriggered is FALSE.\r
7367cc6c 392 TRUE specifies a level triggered interrupt that active\r
5f867ad0 393 when the interrupt line is asserted.\r
7367cc6c 394 FALSE specifies a level triggered interrupt that active\r
5f867ad0 395 when the interrupt line is deasserted.\r
396\r
397 @return 64-bit data value used to send an MSI to the Local APIC.\r
398**/\r
399UINT64\r
7367cc6c 400EFIAPI\r
5f867ad0 401GetApicMsiValue (\r
402 IN UINT8 Vector,\r
403 IN UINTN DeliveryMode,\r
404 IN BOOLEAN LevelTriggered,\r
405 IN BOOLEAN AssertionLevel\r
406 );\r
73152f19
LD
407\r
408/**\r
409 Get Package ID/Core ID/Thread ID of a processor.\r
410\r
411 The algorithm assumes the target system has symmetry across physical\r
412 package boundaries with respect to the number of logical processors\r
413 per package, number of cores per package.\r
414\r
415 @param[in] InitialApicId Initial APIC ID of the target logical processor.\r
416 @param[out] Package Returns the processor package ID.\r
417 @param[out] Core Returns the processor core ID.\r
418 @param[out] Thread Returns the processor thread ID.\r
419**/\r
420VOID\r
1c8ca9a0 421EFIAPI\r
262128e5 422GetProcessorLocationByApicId (\r
73152f19
LD
423 IN UINT32 InitialApicId,\r
424 OUT UINT32 *Package OPTIONAL,\r
425 OUT UINT32 *Core OPTIONAL,\r
426 OUT UINT32 *Thread OPTIONAL\r
427 );\r
7367cc6c 428\r
7f33d4f2
RN
429/**\r
430 Get Package ID/Module ID/Tile ID/Die ID/Core ID/Thread ID of a processor.\r
431\r
432 The algorithm assumes the target system has symmetry across physical\r
433 package boundaries with respect to the number of threads per core, number of\r
434 cores per module, number of modules per tile, number of tiles per die, number\r
435 of dies per package.\r
436\r
437 @param[in] InitialApicId Initial APIC ID of the target logical processor.\r
438 @param[out] Package Returns the processor package ID.\r
439 @param[out] Die Returns the processor die ID.\r
440 @param[out] Tile Returns the processor tile ID.\r
441 @param[out] Module Returns the processor module ID.\r
442 @param[out] Core Returns the processor core ID.\r
443 @param[out] Thread Returns the processor thread ID.\r
444**/\r
445VOID\r
446EFIAPI\r
447GetProcessorLocation2ByApicId (\r
448 IN UINT32 InitialApicId,\r
449 OUT UINT32 *Package OPTIONAL,\r
450 OUT UINT32 *Die OPTIONAL,\r
451 OUT UINT32 *Tile OPTIONAL,\r
452 OUT UINT32 *Module OPTIONAL,\r
453 OUT UINT32 *Core OPTIONAL,\r
454 OUT UINT32 *Thread OPTIONAL\r
455 );\r
bf73cc4b 456#endif\r
457\r