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9060e3ec | 1 | /** @file\r |
2 | PCI eunmeration implementation on entire PCI bus system for PCI Bus module.\r | |
3 | \r | |
724f26a9 | 4 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 5 | This program and the accompanying materials\r |
9060e3ec | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "PciBus.h"\r | |
16 | \r | |
17 | /**\r | |
18 | This routine is used to enumerate entire pci bus system\r | |
19 | in a given platform.\r | |
20 | \r | |
21 | @param Controller Parent controller handle.\r | |
22 | \r | |
23 | @retval EFI_SUCCESS PCI enumeration finished successfully.\r | |
24 | @retval other Some error occurred when enumerating the pci bus system.\r | |
25 | \r | |
26 | **/\r | |
27 | EFI_STATUS\r | |
28 | PciEnumerator (\r | |
29 | IN EFI_HANDLE Controller\r | |
30 | )\r | |
31 | {\r | |
32 | EFI_HANDLE Handle;\r | |
33 | EFI_HANDLE HostBridgeHandle;\r | |
34 | EFI_STATUS Status;\r | |
35 | EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc;\r | |
36 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
37 | \r | |
38 | //\r | |
39 | // If PCI bus has already done the full enumeration, never do it again\r | |
40 | //\r | |
41 | if (!gFullEnumeration) {\r | |
42 | return PciEnumeratorLight (Controller);\r | |
43 | }\r | |
44 | \r | |
45 | //\r | |
46 | // Get the rootbridge Io protocol to find the host bridge handle\r | |
47 | //\r | |
48 | Status = gBS->OpenProtocol (\r | |
49 | Controller,\r | |
50 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
51 | (VOID **) &PciRootBridgeIo,\r | |
52 | gPciBusDriverBinding.DriverBindingHandle,\r | |
53 | Controller,\r | |
54 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
55 | );\r | |
56 | \r | |
57 | if (EFI_ERROR (Status)) {\r | |
58 | return Status;\r | |
59 | }\r | |
60 | \r | |
61 | //\r | |
62 | // Get the host bridge handle\r | |
63 | //\r | |
64 | HostBridgeHandle = PciRootBridgeIo->ParentHandle;\r | |
65 | \r | |
66 | //\r | |
67 | // Get the pci host bridge resource allocation protocol\r | |
68 | //\r | |
69 | Status = gBS->OpenProtocol (\r | |
70 | HostBridgeHandle,\r | |
71 | &gEfiPciHostBridgeResourceAllocationProtocolGuid,\r | |
72 | (VOID **) &PciResAlloc,\r | |
73 | gPciBusDriverBinding.DriverBindingHandle,\r | |
74 | Controller,\r | |
75 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
76 | );\r | |
77 | \r | |
78 | if (EFI_ERROR (Status)) {\r | |
79 | return Status;\r | |
80 | }\r | |
81 | \r | |
82 | //\r | |
83 | // Notify the pci bus enumeration is about to begin\r | |
84 | //\r | |
85 | NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginEnumeration);\r | |
86 | \r | |
87 | //\r | |
88 | // Start the bus allocation phase\r | |
89 | //\r | |
90 | Status = PciHostBridgeEnumerator (PciResAlloc);\r | |
91 | \r | |
92 | if (EFI_ERROR (Status)) {\r | |
93 | return Status;\r | |
94 | }\r | |
95 | \r | |
96 | //\r | |
97 | // Submit the resource request\r | |
98 | //\r | |
99 | Status = PciHostBridgeResourceAllocator (PciResAlloc);\r | |
100 | \r | |
101 | if (EFI_ERROR (Status)) {\r | |
102 | return Status;\r | |
103 | }\r | |
104 | \r | |
105 | //\r | |
106 | // Notify the pci bus enumeration is about to complete\r | |
107 | //\r | |
108 | NotifyPhase (PciResAlloc, EfiPciHostBridgeEndEnumeration);\r | |
109 | \r | |
110 | //\r | |
111 | // Process P2C\r | |
112 | //\r | |
113 | Status = PciHostBridgeP2CProcess (PciResAlloc);\r | |
114 | \r | |
115 | if (EFI_ERROR (Status)) {\r | |
116 | return Status;\r | |
117 | }\r | |
118 | \r | |
119 | //\r | |
120 | // Process attributes for devices on this host bridge\r | |
121 | //\r | |
122 | Status = PciHostBridgeDeviceAttribute (PciResAlloc);\r | |
123 | if (EFI_ERROR (Status)) {\r | |
124 | return Status;\r | |
125 | }\r | |
126 | \r | |
127 | gFullEnumeration = FALSE;\r | |
128 | \r | |
0ce94f38 | 129 | Handle = NULL;\r |
9060e3ec | 130 | Status = gBS->InstallProtocolInterface (\r |
131 | &Handle,\r | |
132 | &gEfiPciEnumerationCompleteProtocolGuid,\r | |
133 | EFI_NATIVE_INTERFACE,\r | |
134 | NULL\r | |
135 | );\r | |
136 | if (EFI_ERROR (Status)) {\r | |
137 | return Status;\r | |
138 | }\r | |
139 | \r | |
140 | return EFI_SUCCESS;\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Enumerate PCI root bridge.\r | |
145 | \r | |
146 | @param PciResAlloc Pointer to protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.\r | |
147 | @param RootBridgeDev Instance of root bridge device.\r | |
148 | \r | |
149 | @retval EFI_SUCCESS Successfully enumerated root bridge.\r | |
150 | @retval other Failed to enumerate root bridge.\r | |
151 | \r | |
152 | **/\r | |
153 | EFI_STATUS\r | |
154 | PciRootBridgeEnumerator (\r | |
155 | IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc,\r | |
156 | IN PCI_IO_DEVICE *RootBridgeDev\r | |
157 | )\r | |
158 | {\r | |
159 | EFI_STATUS Status;\r | |
160 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration;\r | |
306bbe82 | 161 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration1;\r |
162 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration2;\r | |
163 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration3;\r | |
9060e3ec | 164 | UINT8 SubBusNumber;\r |
165 | UINT8 StartBusNumber;\r | |
166 | UINT8 PaddedBusRange;\r | |
167 | EFI_HANDLE RootBridgeHandle;\r | |
306bbe82 | 168 | UINT8 Desc;\r |
169 | UINT64 AddrLen;\r | |
170 | UINT64 AddrRangeMin;\r | |
9060e3ec | 171 | \r |
172 | SubBusNumber = 0;\r | |
173 | StartBusNumber = 0;\r | |
174 | PaddedBusRange = 0;\r | |
175 | \r | |
176 | //\r | |
177 | // Get the root bridge handle\r | |
178 | //\r | |
179 | RootBridgeHandle = RootBridgeDev->Handle;\r | |
180 | \r | |
181 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
182 | EFI_PROGRESS_CODE,\r | |
fe91c992 | 183 | EFI_IO_BUS_PCI | EFI_IOB_PCI_BUS_ENUM,\r |
9060e3ec | 184 | RootBridgeDev->DevicePath\r |
185 | );\r | |
186 | \r | |
187 | //\r | |
188 | // Get the Bus information\r | |
189 | //\r | |
190 | Status = PciResAlloc->StartBusEnumeration (\r | |
191 | PciResAlloc,\r | |
192 | RootBridgeHandle,\r | |
193 | (VOID **) &Configuration\r | |
194 | );\r | |
195 | \r | |
196 | if (EFI_ERROR (Status)) {\r | |
197 | return Status;\r | |
198 | }\r | |
199 | \r | |
306bbe82 | 200 | if (Configuration == NULL || Configuration->Desc == ACPI_END_TAG_DESCRIPTOR) {\r |
201 | return EFI_INVALID_PARAMETER;\r | |
202 | }\r | |
203 | RootBridgeDev->BusNumberRanges = Configuration;\r | |
204 | \r | |
205 | //\r | |
206 | // Sort the descriptors in ascending order\r | |
207 | //\r | |
208 | for (Configuration1 = Configuration; Configuration1->Desc != ACPI_END_TAG_DESCRIPTOR; Configuration1++) {\r | |
209 | Configuration2 = Configuration1;\r | |
210 | for (Configuration3 = Configuration1 + 1; Configuration3->Desc != ACPI_END_TAG_DESCRIPTOR; Configuration3++) {\r | |
211 | if (Configuration2->AddrRangeMin > Configuration3->AddrRangeMin) {\r | |
212 | Configuration2 = Configuration3;\r | |
213 | }\r | |
214 | }\r | |
215 | //\r | |
216 | // All other fields other than AddrRangeMin and AddrLen are ignored in a descriptor,\r | |
217 | // so only need to swap these two fields.\r | |
218 | //\r | |
219 | if (Configuration2 != Configuration1) {\r | |
220 | AddrRangeMin = Configuration1->AddrRangeMin;\r | |
221 | Configuration1->AddrRangeMin = Configuration2->AddrRangeMin;\r | |
222 | Configuration2->AddrRangeMin = AddrRangeMin;\r | |
223 | \r | |
224 | AddrLen = Configuration1->AddrLen;\r | |
225 | Configuration1->AddrLen = Configuration2->AddrLen;\r | |
226 | Configuration2->AddrLen = AddrLen;\r | |
227 | }\r | |
228 | }\r | |
229 | \r | |
9060e3ec | 230 | //\r |
231 | // Get the bus number to start with\r | |
232 | //\r | |
233 | StartBusNumber = (UINT8) (Configuration->AddrRangeMin);\r | |
9060e3ec | 234 | \r |
235 | //\r | |
236 | // Initialize the subordinate bus number\r | |
237 | //\r | |
238 | SubBusNumber = StartBusNumber;\r | |
239 | \r | |
240 | //\r | |
241 | // Reset all assigned PCI bus number\r | |
242 | //\r | |
243 | ResetAllPpbBusNumber (\r | |
244 | RootBridgeDev,\r | |
245 | StartBusNumber\r | |
246 | );\r | |
247 | \r | |
248 | //\r | |
249 | // Assign bus number\r | |
250 | //\r | |
251 | Status = PciScanBus (\r | |
252 | RootBridgeDev,\r | |
306bbe82 | 253 | StartBusNumber,\r |
9060e3ec | 254 | &SubBusNumber,\r |
255 | &PaddedBusRange\r | |
256 | );\r | |
257 | \r | |
258 | if (EFI_ERROR (Status)) {\r | |
259 | return Status;\r | |
260 | }\r | |
261 | \r | |
262 | \r | |
263 | //\r | |
264 | // Assign max bus number scanned\r | |
265 | //\r | |
9060e3ec | 266 | \r |
306bbe82 | 267 | Status = PciAllocateBusNumber (RootBridgeDev, SubBusNumber, PaddedBusRange, &SubBusNumber);\r |
268 | if (EFI_ERROR (Status)) {\r | |
269 | return Status;\r | |
270 | } \r | |
271 | \r | |
272 | //\r | |
273 | // Find the bus range which contains the higest bus number, then returns the number of buses\r | |
274 | // that should be decoded.\r | |
275 | //\r | |
276 | while (Configuration->AddrRangeMin + Configuration->AddrLen - 1 < SubBusNumber) {\r | |
277 | Configuration++;\r | |
278 | }\r | |
279 | AddrLen = Configuration->AddrLen;\r | |
280 | Configuration->AddrLen = SubBusNumber - Configuration->AddrRangeMin + 1;\r | |
281 | \r | |
282 | //\r | |
283 | // Save the Desc field of the next descriptor. Mark the next descriptor as an END descriptor.\r | |
284 | //\r | |
285 | Configuration++;\r | |
286 | Desc = Configuration->Desc;\r | |
287 | Configuration->Desc = ACPI_END_TAG_DESCRIPTOR;\r | |
288 | \r | |
9060e3ec | 289 | //\r |
290 | // Set bus number\r | |
291 | //\r | |
292 | Status = PciResAlloc->SetBusNumbers (\r | |
293 | PciResAlloc,\r | |
294 | RootBridgeHandle,\r | |
306bbe82 | 295 | RootBridgeDev->BusNumberRanges\r |
9060e3ec | 296 | );\r |
297 | \r | |
306bbe82 | 298 | //\r |
299 | // Restore changed fields\r | |
300 | //\r | |
301 | Configuration->Desc = Desc;\r | |
302 | (Configuration - 1)->AddrLen = AddrLen;\r | |
303 | \r | |
304 | return Status;\r | |
9060e3ec | 305 | }\r |
306 | \r | |
307 | /**\r | |
308 | This routine is used to process all PCI devices' Option Rom\r | |
309 | on a certain root bridge.\r | |
310 | \r | |
311 | @param Bridge Given parent's root bridge.\r | |
312 | @param RomBase Base address of ROM driver loaded from.\r | |
313 | @param MaxLength Maximum rom size.\r | |
314 | \r | |
315 | **/\r | |
316 | VOID\r | |
317 | ProcessOptionRom (\r | |
318 | IN PCI_IO_DEVICE *Bridge,\r | |
319 | IN UINT64 RomBase,\r | |
320 | IN UINT64 MaxLength\r | |
321 | )\r | |
322 | {\r | |
323 | LIST_ENTRY *CurrentLink;\r | |
324 | PCI_IO_DEVICE *Temp;\r | |
325 | \r | |
326 | //\r | |
327 | // Go through bridges to reach all devices\r | |
328 | //\r | |
329 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
330 | while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r | |
331 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
332 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
333 | \r | |
334 | //\r | |
335 | // Go further to process the option rom under this bridge\r | |
336 | //\r | |
337 | ProcessOptionRom (Temp, RomBase, MaxLength);\r | |
338 | }\r | |
339 | \r | |
340 | if (Temp->RomSize != 0 && Temp->RomSize <= MaxLength) {\r | |
341 | \r | |
342 | //\r | |
343 | // Load and process the option rom\r | |
344 | //\r | |
345 | LoadOpRomImage (Temp, RomBase);\r | |
346 | }\r | |
347 | \r | |
348 | CurrentLink = CurrentLink->ForwardLink;\r | |
349 | }\r | |
350 | }\r | |
351 | \r | |
352 | /**\r | |
353 | This routine is used to assign bus number to the given PCI bus system\r | |
354 | \r | |
355 | @param Bridge Parent root bridge instance.\r | |
356 | @param StartBusNumber Number of beginning.\r | |
357 | @param SubBusNumber The number of sub bus.\r | |
358 | \r | |
359 | @retval EFI_SUCCESS Successfully assigned bus number.\r | |
360 | @retval EFI_DEVICE_ERROR Failed to assign bus number.\r | |
361 | \r | |
362 | **/\r | |
363 | EFI_STATUS\r | |
364 | PciAssignBusNumber (\r | |
365 | IN PCI_IO_DEVICE *Bridge,\r | |
366 | IN UINT8 StartBusNumber,\r | |
367 | OUT UINT8 *SubBusNumber\r | |
368 | )\r | |
369 | {\r | |
370 | EFI_STATUS Status;\r | |
371 | PCI_TYPE00 Pci;\r | |
372 | UINT8 Device;\r | |
373 | UINT8 Func;\r | |
374 | UINT64 Address;\r | |
375 | UINTN SecondBus;\r | |
376 | UINT16 Register;\r | |
377 | UINT8 Register8;\r | |
378 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
379 | \r | |
380 | PciRootBridgeIo = Bridge->PciRootBridgeIo;\r | |
381 | \r | |
382 | SecondBus = 0;\r | |
383 | Register = 0;\r | |
384 | \r | |
385 | *SubBusNumber = StartBusNumber;\r | |
386 | \r | |
387 | //\r | |
388 | // First check to see whether the parent is ppb\r | |
389 | //\r | |
390 | for (Device = 0; Device <= PCI_MAX_DEVICE; Device++) {\r | |
391 | for (Func = 0; Func <= PCI_MAX_FUNC; Func++) {\r | |
392 | \r | |
393 | //\r | |
394 | // Check to see whether a pci device is present\r | |
395 | //\r | |
396 | Status = PciDevicePresent (\r | |
397 | PciRootBridgeIo,\r | |
398 | &Pci,\r | |
399 | StartBusNumber,\r | |
400 | Device,\r | |
401 | Func\r | |
402 | );\r | |
403 | \r | |
404 | if (!EFI_ERROR (Status) &&\r | |
405 | (IS_PCI_BRIDGE (&Pci) || IS_CARDBUS_BRIDGE (&Pci))) {\r | |
406 | \r | |
407 | //\r | |
408 | // Reserved one bus for cardbus bridge\r | |
409 | //\r | |
306bbe82 | 410 | Status = PciAllocateBusNumber (Bridge, *SubBusNumber, 1, SubBusNumber);\r |
411 | if (EFI_ERROR (Status)) {\r | |
412 | return Status;\r | |
413 | }\r | |
414 | SecondBus = *SubBusNumber;\r | |
9060e3ec | 415 | \r |
416 | Register = (UINT16) ((SecondBus << 8) | (UINT16) StartBusNumber);\r | |
417 | \r | |
418 | Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, 0x18);\r | |
419 | \r | |
420 | Status = PciRootBridgeIo->Pci.Write (\r | |
421 | PciRootBridgeIo,\r | |
422 | EfiPciWidthUint16,\r | |
423 | Address,\r | |
424 | 1,\r | |
425 | &Register\r | |
426 | );\r | |
427 | \r | |
428 | //\r | |
429 | // Initialize SubBusNumber to SecondBus\r | |
430 | //\r | |
431 | Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, 0x1A);\r | |
432 | Status = PciRootBridgeIo->Pci.Write (\r | |
433 | PciRootBridgeIo,\r | |
434 | EfiPciWidthUint8,\r | |
435 | Address,\r | |
436 | 1,\r | |
437 | SubBusNumber\r | |
438 | );\r | |
439 | //\r | |
440 | // If it is PPB, resursively search down this bridge\r | |
441 | //\r | |
442 | if (IS_PCI_BRIDGE (&Pci)) {\r | |
443 | \r | |
444 | Register8 = 0xFF;\r | |
445 | Status = PciRootBridgeIo->Pci.Write (\r | |
446 | PciRootBridgeIo,\r | |
447 | EfiPciWidthUint8,\r | |
448 | Address,\r | |
449 | 1,\r | |
450 | &Register8\r | |
451 | );\r | |
452 | \r | |
453 | Status = PciAssignBusNumber (\r | |
454 | Bridge,\r | |
455 | (UINT8) (SecondBus),\r | |
456 | SubBusNumber\r | |
457 | );\r | |
458 | \r | |
459 | if (EFI_ERROR (Status)) {\r | |
460 | return EFI_DEVICE_ERROR;\r | |
461 | }\r | |
462 | }\r | |
463 | \r | |
464 | //\r | |
465 | // Set the current maximum bus number under the PPB\r | |
466 | //\r | |
467 | Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, 0x1A);\r | |
468 | \r | |
469 | Status = PciRootBridgeIo->Pci.Write (\r | |
470 | PciRootBridgeIo,\r | |
471 | EfiPciWidthUint8,\r | |
472 | Address,\r | |
473 | 1,\r | |
474 | SubBusNumber\r | |
475 | );\r | |
476 | \r | |
477 | }\r | |
478 | \r | |
479 | if (Func == 0 && !IS_PCI_MULTI_FUNC (&Pci)) {\r | |
480 | \r | |
481 | //\r | |
482 | // Skip sub functions, this is not a multi function device\r | |
483 | //\r | |
484 | Func = PCI_MAX_FUNC;\r | |
485 | }\r | |
486 | }\r | |
487 | }\r | |
488 | \r | |
489 | return EFI_SUCCESS;\r | |
490 | }\r | |
491 | \r | |
492 | /**\r | |
493 | This routine is used to determine the root bridge attribute by interfacing\r | |
494 | the host bridge resource allocation protocol.\r | |
495 | \r | |
496 | @param PciResAlloc Protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL\r | |
497 | @param RootBridgeDev Root bridge instance\r | |
498 | \r | |
499 | @retval EFI_SUCCESS Successfully got root bridge's attribute.\r | |
500 | @retval other Failed to get attribute.\r | |
501 | \r | |
502 | **/\r | |
503 | EFI_STATUS\r | |
504 | DetermineRootBridgeAttributes (\r | |
505 | IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc,\r | |
506 | IN PCI_IO_DEVICE *RootBridgeDev\r | |
507 | )\r | |
508 | {\r | |
509 | UINT64 Attributes;\r | |
510 | EFI_STATUS Status;\r | |
511 | EFI_HANDLE RootBridgeHandle;\r | |
512 | \r | |
513 | Attributes = 0;\r | |
514 | RootBridgeHandle = RootBridgeDev->Handle;\r | |
515 | \r | |
516 | //\r | |
517 | // Get root bridge attribute by calling into pci host bridge resource allocation protocol\r | |
518 | //\r | |
519 | Status = PciResAlloc->GetAllocAttributes (\r | |
520 | PciResAlloc,\r | |
521 | RootBridgeHandle,\r | |
522 | &Attributes\r | |
523 | );\r | |
524 | \r | |
525 | if (EFI_ERROR (Status)) {\r | |
526 | return Status;\r | |
527 | }\r | |
528 | \r | |
529 | //\r | |
530 | // Here is the point where PCI bus driver calls HOST bridge allocation protocol\r | |
531 | // Currently we hardcoded for ea815\r | |
532 | //\r | |
533 | if ((Attributes & EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM) != 0) {\r | |
534 | RootBridgeDev->Decodes |= EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED;\r | |
535 | }\r | |
536 | \r | |
537 | if ((Attributes & EFI_PCI_HOST_BRIDGE_MEM64_DECODE) != 0) {\r | |
60516202 | 538 | RootBridgeDev->Decodes |= EFI_BRIDGE_MEM64_DECODE_SUPPORTED;\r |
9060e3ec | 539 | RootBridgeDev->Decodes |= EFI_BRIDGE_PMEM64_DECODE_SUPPORTED;\r |
540 | }\r | |
541 | \r | |
542 | RootBridgeDev->Decodes |= EFI_BRIDGE_MEM32_DECODE_SUPPORTED;\r | |
543 | RootBridgeDev->Decodes |= EFI_BRIDGE_PMEM32_DECODE_SUPPORTED;\r | |
544 | RootBridgeDev->Decodes |= EFI_BRIDGE_IO16_DECODE_SUPPORTED;\r | |
545 | \r | |
546 | return EFI_SUCCESS;\r | |
547 | }\r | |
548 | \r | |
549 | /**\r | |
550 | Get Max Option Rom size on specified bridge.\r | |
551 | \r | |
552 | @param Bridge Given bridge device instance.\r | |
553 | \r | |
554 | @return Max size of option rom needed.\r | |
555 | \r | |
556 | **/\r | |
557 | UINT64\r | |
558 | GetMaxOptionRomSize (\r | |
559 | IN PCI_IO_DEVICE *Bridge\r | |
560 | )\r | |
561 | {\r | |
562 | LIST_ENTRY *CurrentLink;\r | |
563 | PCI_IO_DEVICE *Temp;\r | |
564 | UINT64 MaxOptionRomSize;\r | |
565 | UINT64 TempOptionRomSize;\r | |
566 | \r | |
567 | MaxOptionRomSize = 0;\r | |
568 | \r | |
569 | //\r | |
570 | // Go through bridges to reach all devices\r | |
571 | //\r | |
572 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
573 | while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r | |
574 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
575 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
576 | \r | |
577 | //\r | |
578 | // Get max option rom size under this bridge\r | |
579 | //\r | |
580 | TempOptionRomSize = GetMaxOptionRomSize (Temp);\r | |
581 | \r | |
582 | //\r | |
583 | // Compare with the option rom size of the bridge\r | |
584 | // Get the larger one\r | |
585 | //\r | |
586 | if (Temp->RomSize > TempOptionRomSize) {\r | |
587 | TempOptionRomSize = Temp->RomSize;\r | |
588 | }\r | |
589 | \r | |
590 | } else {\r | |
591 | \r | |
592 | //\r | |
593 | // For devices get the rom size directly\r | |
594 | //\r | |
595 | TempOptionRomSize = Temp->RomSize;\r | |
596 | }\r | |
597 | \r | |
598 | //\r | |
599 | // Get the largest rom size on this bridge\r | |
600 | //\r | |
601 | if (TempOptionRomSize > MaxOptionRomSize) {\r | |
602 | MaxOptionRomSize = TempOptionRomSize;\r | |
603 | }\r | |
604 | \r | |
605 | CurrentLink = CurrentLink->ForwardLink;\r | |
606 | }\r | |
607 | \r | |
608 | return MaxOptionRomSize;\r | |
609 | }\r | |
610 | \r | |
611 | /**\r | |
612 | Process attributes of devices on this host bridge\r | |
613 | \r | |
614 | @param PciResAlloc Protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.\r | |
615 | \r | |
616 | @retval EFI_SUCCESS Successfully process attribute.\r | |
617 | @retval EFI_NOT_FOUND Can not find the specific root bridge device.\r | |
618 | @retval other Failed to determine the root bridge device's attribute.\r | |
619 | \r | |
620 | **/\r | |
621 | EFI_STATUS\r | |
622 | PciHostBridgeDeviceAttribute (\r | |
623 | IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc\r | |
624 | )\r | |
625 | {\r | |
626 | EFI_HANDLE RootBridgeHandle;\r | |
627 | PCI_IO_DEVICE *RootBridgeDev;\r | |
628 | EFI_STATUS Status;\r | |
629 | \r | |
630 | RootBridgeHandle = NULL;\r | |
631 | \r | |
632 | while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {\r | |
633 | \r | |
634 | //\r | |
635 | // Get RootBridg Device by handle\r | |
636 | //\r | |
637 | RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);\r | |
638 | \r | |
639 | if (RootBridgeDev == NULL) {\r | |
640 | return EFI_NOT_FOUND;\r | |
641 | }\r | |
642 | \r | |
643 | //\r | |
644 | // Set the attributes for devcies behind the Root Bridge\r | |
645 | //\r | |
646 | Status = DetermineDeviceAttribute (RootBridgeDev);\r | |
647 | if (EFI_ERROR (Status)) {\r | |
648 | return Status;\r | |
649 | }\r | |
650 | \r | |
651 | }\r | |
652 | \r | |
653 | return EFI_SUCCESS;\r | |
654 | }\r | |
655 | \r | |
656 | /**\r | |
657 | Get resource allocation status from the ACPI resource descriptor.\r | |
658 | \r | |
659 | @param AcpiConfig Point to Acpi configuration table.\r | |
660 | @param IoResStatus Return the status of I/O resource.\r | |
661 | @param Mem32ResStatus Return the status of 32-bit Memory resource.\r | |
662 | @param PMem32ResStatus Return the status of 32-bit Prefetchable Memory resource.\r | |
663 | @param Mem64ResStatus Return the status of 64-bit Memory resource.\r | |
664 | @param PMem64ResStatus Return the status of 64-bit Prefetchable Memory resource.\r | |
665 | \r | |
666 | **/\r | |
667 | VOID\r | |
668 | GetResourceAllocationStatus (\r | |
669 | VOID *AcpiConfig,\r | |
670 | OUT UINT64 *IoResStatus,\r | |
671 | OUT UINT64 *Mem32ResStatus,\r | |
672 | OUT UINT64 *PMem32ResStatus,\r | |
673 | OUT UINT64 *Mem64ResStatus,\r | |
674 | OUT UINT64 *PMem64ResStatus\r | |
675 | )\r | |
676 | {\r | |
677 | UINT8 *Temp;\r | |
678 | UINT64 ResStatus;\r | |
679 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *ACPIAddressDesc;\r | |
680 | \r | |
681 | Temp = (UINT8 *) AcpiConfig;\r | |
682 | \r | |
683 | while (*Temp == ACPI_ADDRESS_SPACE_DESCRIPTOR) {\r | |
684 | \r | |
685 | ACPIAddressDesc = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp;\r | |
686 | ResStatus = ACPIAddressDesc->AddrTranslationOffset;\r | |
687 | \r | |
688 | switch (ACPIAddressDesc->ResType) {\r | |
689 | case 0:\r | |
690 | if (ACPIAddressDesc->AddrSpaceGranularity == 32) {\r | |
691 | if (ACPIAddressDesc->SpecificFlag == 0x06) {\r | |
692 | //\r | |
693 | // Pmem32\r | |
694 | //\r | |
695 | *PMem32ResStatus = ResStatus;\r | |
696 | } else {\r | |
697 | //\r | |
698 | // Mem32\r | |
699 | //\r | |
700 | *Mem32ResStatus = ResStatus;\r | |
701 | }\r | |
702 | }\r | |
703 | \r | |
704 | if (ACPIAddressDesc->AddrSpaceGranularity == 64) {\r | |
705 | if (ACPIAddressDesc->SpecificFlag == 0x06) {\r | |
706 | //\r | |
707 | // PMem64\r | |
708 | //\r | |
709 | *PMem64ResStatus = ResStatus;\r | |
710 | } else {\r | |
711 | //\r | |
712 | // Mem64\r | |
713 | //\r | |
714 | *Mem64ResStatus = ResStatus;\r | |
715 | }\r | |
716 | }\r | |
717 | \r | |
718 | break;\r | |
719 | \r | |
720 | case 1:\r | |
721 | //\r | |
722 | // Io\r | |
723 | //\r | |
724 | *IoResStatus = ResStatus;\r | |
725 | break;\r | |
726 | \r | |
727 | default:\r | |
728 | break;\r | |
729 | }\r | |
730 | \r | |
731 | Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);\r | |
732 | }\r | |
733 | }\r | |
734 | \r | |
735 | /**\r | |
736 | Remove a PCI device from device pool and mark its bar.\r | |
737 | \r | |
738 | @param PciDevice Instance of Pci device.\r | |
739 | \r | |
740 | @retval EFI_SUCCESS Successfully remove the PCI device.\r | |
741 | @retval EFI_ABORTED Pci device is a root bridge or a PCI-PCI bridge.\r | |
742 | \r | |
743 | **/\r | |
744 | EFI_STATUS\r | |
745 | RejectPciDevice (\r | |
746 | IN PCI_IO_DEVICE *PciDevice\r | |
747 | )\r | |
748 | {\r | |
749 | PCI_IO_DEVICE *Bridge;\r | |
750 | PCI_IO_DEVICE *Temp;\r | |
751 | LIST_ENTRY *CurrentLink;\r | |
752 | \r | |
753 | //\r | |
754 | // Remove the padding resource from a bridge\r | |
755 | //\r | |
756 | if ( IS_PCI_BRIDGE(&PciDevice->Pci) &&\r | |
757 | PciDevice->ResourcePaddingDescriptors != NULL ) {\r | |
758 | FreePool (PciDevice->ResourcePaddingDescriptors);\r | |
759 | PciDevice->ResourcePaddingDescriptors = NULL;\r | |
760 | return EFI_SUCCESS;\r | |
761 | }\r | |
762 | \r | |
763 | //\r | |
764 | // Skip RB and PPB\r | |
765 | //\r | |
766 | if (IS_PCI_BRIDGE (&PciDevice->Pci) || (PciDevice->Parent == NULL)) {\r | |
767 | return EFI_ABORTED;\r | |
768 | }\r | |
769 | \r | |
770 | if (IS_CARDBUS_BRIDGE (&PciDevice->Pci)) {\r | |
771 | //\r | |
772 | // Get the root bridge device\r | |
773 | //\r | |
774 | Bridge = PciDevice;\r | |
775 | while (Bridge->Parent != NULL) {\r | |
776 | Bridge = Bridge->Parent;\r | |
777 | }\r | |
778 | \r | |
779 | RemoveAllPciDeviceOnBridge (Bridge->Handle, PciDevice);\r | |
780 | \r | |
781 | //\r | |
782 | // Mark its bar\r | |
783 | //\r | |
784 | InitializeP2C (PciDevice);\r | |
785 | }\r | |
786 | \r | |
787 | //\r | |
788 | // Remove the device\r | |
789 | //\r | |
790 | Bridge = PciDevice->Parent;\r | |
791 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
792 | while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r | |
793 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
794 | if (Temp == PciDevice) {\r | |
795 | InitializePciDevice (Temp);\r | |
796 | RemoveEntryList (CurrentLink);\r | |
9060e3ec | 797 | return EFI_SUCCESS;\r |
798 | }\r | |
799 | \r | |
800 | CurrentLink = CurrentLink->ForwardLink;\r | |
801 | }\r | |
802 | \r | |
803 | return EFI_ABORTED;\r | |
804 | }\r | |
805 | \r | |
806 | /**\r | |
807 | Determine whethter a PCI device can be rejected.\r | |
808 | \r | |
809 | @param PciResNode Pointer to Pci resource node instance.\r | |
810 | \r | |
811 | @retval TRUE The PCI device can be rejected.\r | |
812 | @retval TRUE The PCI device cannot be rejected.\r | |
813 | \r | |
814 | **/\r | |
815 | BOOLEAN\r | |
816 | IsRejectiveDevice (\r | |
817 | IN PCI_RESOURCE_NODE *PciResNode\r | |
818 | )\r | |
819 | {\r | |
820 | PCI_IO_DEVICE *Temp;\r | |
821 | \r | |
822 | Temp = PciResNode->PciDev;\r | |
823 | \r | |
824 | //\r | |
825 | // Ensure the device is present\r | |
826 | //\r | |
827 | if (Temp == NULL) {\r | |
828 | return FALSE;\r | |
829 | }\r | |
830 | \r | |
831 | //\r | |
832 | // PPB and RB should go ahead\r | |
833 | //\r | |
834 | if (IS_PCI_BRIDGE (&Temp->Pci) || (Temp->Parent == NULL)) {\r | |
835 | return TRUE;\r | |
836 | }\r | |
837 | \r | |
838 | //\r | |
839 | // Skip device on Bus0\r | |
840 | //\r | |
841 | if ((Temp->Parent != NULL) && (Temp->BusNumber == 0)) {\r | |
842 | return FALSE;\r | |
843 | }\r | |
844 | \r | |
845 | //\r | |
846 | // Skip VGA\r | |
847 | //\r | |
848 | if (IS_PCI_VGA (&Temp->Pci)) {\r | |
849 | return FALSE;\r | |
850 | }\r | |
851 | \r | |
852 | return TRUE;\r | |
853 | }\r | |
854 | \r | |
855 | /**\r | |
856 | Compare two resource nodes and get the larger resource consumer.\r | |
857 | \r | |
858 | @param PciResNode1 resource node 1 want to be compared\r | |
859 | @param PciResNode2 resource node 2 want to be compared\r | |
860 | \r | |
861 | @return Larger resource node.\r | |
862 | \r | |
863 | **/\r | |
864 | PCI_RESOURCE_NODE *\r | |
865 | GetLargerConsumerDevice (\r | |
866 | IN PCI_RESOURCE_NODE *PciResNode1,\r | |
867 | IN PCI_RESOURCE_NODE *PciResNode2\r | |
868 | )\r | |
869 | {\r | |
870 | if (PciResNode2 == NULL) {\r | |
871 | return PciResNode1;\r | |
872 | }\r | |
873 | \r | |
874 | if ((IS_PCI_BRIDGE(&(PciResNode2->PciDev->Pci)) || (PciResNode2->PciDev->Parent == NULL)) \\r | |
875 | && (PciResNode2->ResourceUsage != PciResUsagePadding) )\r | |
876 | {\r | |
877 | return PciResNode1;\r | |
878 | }\r | |
879 | \r | |
880 | if (PciResNode1 == NULL) {\r | |
881 | return PciResNode2;\r | |
882 | }\r | |
883 | \r | |
884 | if ((PciResNode1->Length) > (PciResNode2->Length)) {\r | |
885 | return PciResNode1;\r | |
886 | }\r | |
887 | \r | |
888 | return PciResNode2;\r | |
889 | }\r | |
890 | \r | |
891 | \r | |
892 | /**\r | |
893 | Get the max resource consumer in the host resource pool.\r | |
894 | \r | |
895 | @param ResPool Pointer to resource pool node.\r | |
896 | \r | |
897 | @return The max resource consumer in the host resource pool.\r | |
898 | \r | |
899 | **/\r | |
900 | PCI_RESOURCE_NODE *\r | |
901 | GetMaxResourceConsumerDevice (\r | |
902 | IN PCI_RESOURCE_NODE *ResPool\r | |
903 | )\r | |
904 | {\r | |
905 | PCI_RESOURCE_NODE *Temp;\r | |
906 | LIST_ENTRY *CurrentLink;\r | |
907 | PCI_RESOURCE_NODE *PciResNode;\r | |
908 | PCI_RESOURCE_NODE *PPBResNode;\r | |
909 | \r | |
910 | PciResNode = NULL;\r | |
911 | \r | |
912 | CurrentLink = ResPool->ChildList.ForwardLink;\r | |
913 | while (CurrentLink != NULL && CurrentLink != &ResPool->ChildList) {\r | |
914 | \r | |
915 | Temp = RESOURCE_NODE_FROM_LINK (CurrentLink);\r | |
916 | \r | |
917 | if (!IsRejectiveDevice (Temp)) {\r | |
918 | CurrentLink = CurrentLink->ForwardLink;\r | |
919 | continue;\r | |
920 | }\r | |
921 | \r | |
922 | if ((IS_PCI_BRIDGE (&(Temp->PciDev->Pci)) || (Temp->PciDev->Parent == NULL)) \\r | |
923 | && (Temp->ResourceUsage != PciResUsagePadding))\r | |
924 | {\r | |
925 | PPBResNode = GetMaxResourceConsumerDevice (Temp);\r | |
926 | PciResNode = GetLargerConsumerDevice (PciResNode, PPBResNode);\r | |
927 | } else {\r | |
928 | PciResNode = GetLargerConsumerDevice (PciResNode, Temp);\r | |
929 | }\r | |
930 | \r | |
931 | CurrentLink = CurrentLink->ForwardLink;\r | |
932 | }\r | |
933 | \r | |
934 | return PciResNode;\r | |
935 | }\r | |
936 | \r | |
937 | /**\r | |
938 | Adjust host bridge allocation so as to reduce resource requirement\r | |
939 | \r | |
940 | @param IoPool Pointer to instance of I/O resource Node.\r | |
941 | @param Mem32Pool Pointer to instance of 32-bit memory resource Node.\r | |
942 | @param PMem32Pool Pointer to instance of 32-bit Prefetchable memory resource node.\r | |
943 | @param Mem64Pool Pointer to instance of 64-bit memory resource node.\r | |
944 | @param PMem64Pool Pointer to instance of 64-bit Prefetchable memory resource node.\r | |
945 | @param IoResStatus Status of I/O resource Node.\r | |
946 | @param Mem32ResStatus Status of 32-bit memory resource Node.\r | |
947 | @param PMem32ResStatus Status of 32-bit Prefetchable memory resource node.\r | |
948 | @param Mem64ResStatus Status of 64-bit memory resource node.\r | |
949 | @param PMem64ResStatus Status of 64-bit Prefetchable memory resource node.\r | |
950 | \r | |
951 | @retval EFI_SUCCESS Successfully adjusted resoruce on host bridge.\r | |
952 | @retval EFI_ABORTED Host bridge hasn't this resource type or no resource be adjusted.\r | |
953 | \r | |
954 | **/\r | |
955 | EFI_STATUS\r | |
956 | PciHostBridgeAdjustAllocation (\r | |
957 | IN PCI_RESOURCE_NODE *IoPool,\r | |
958 | IN PCI_RESOURCE_NODE *Mem32Pool,\r | |
959 | IN PCI_RESOURCE_NODE *PMem32Pool,\r | |
960 | IN PCI_RESOURCE_NODE *Mem64Pool,\r | |
961 | IN PCI_RESOURCE_NODE *PMem64Pool,\r | |
962 | IN UINT64 IoResStatus,\r | |
963 | IN UINT64 Mem32ResStatus,\r | |
964 | IN UINT64 PMem32ResStatus,\r | |
965 | IN UINT64 Mem64ResStatus,\r | |
966 | IN UINT64 PMem64ResStatus\r | |
967 | )\r | |
968 | {\r | |
969 | BOOLEAN AllocationAjusted;\r | |
970 | PCI_RESOURCE_NODE *PciResNode;\r | |
971 | PCI_RESOURCE_NODE *ResPool[5];\r | |
972 | PCI_IO_DEVICE *RemovedPciDev[5];\r | |
973 | UINT64 ResStatus[5];\r | |
974 | UINTN RemovedPciDevNum;\r | |
975 | UINTN DevIndex;\r | |
976 | UINTN ResType;\r | |
977 | EFI_STATUS Status;\r | |
978 | EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA_PAYLOAD AllocFailExtendedData;\r | |
979 | \r | |
980 | PciResNode = NULL;\r | |
981 | ZeroMem (RemovedPciDev, 5 * sizeof (PCI_IO_DEVICE *));\r | |
982 | RemovedPciDevNum = 0;\r | |
983 | \r | |
984 | ResPool[0] = IoPool;\r | |
985 | ResPool[1] = Mem32Pool;\r | |
986 | ResPool[2] = PMem32Pool;\r | |
987 | ResPool[3] = Mem64Pool;\r | |
988 | ResPool[4] = PMem64Pool;\r | |
989 | \r | |
990 | ResStatus[0] = IoResStatus;\r | |
991 | ResStatus[1] = Mem32ResStatus;\r | |
992 | ResStatus[2] = PMem32ResStatus;\r | |
993 | ResStatus[3] = Mem64ResStatus;\r | |
994 | ResStatus[4] = PMem64ResStatus;\r | |
995 | \r | |
996 | AllocationAjusted = FALSE;\r | |
997 | \r | |
998 | for (ResType = 0; ResType < 5; ResType++) {\r | |
999 | \r | |
1000 | if (ResStatus[ResType] == EFI_RESOURCE_SATISFIED) {\r | |
1001 | continue;\r | |
1002 | }\r | |
1003 | \r | |
1004 | if (ResStatus[ResType] == EFI_RESOURCE_NOT_SATISFIED) {\r | |
1005 | //\r | |
1006 | // Host bridge hasn't this resource type\r | |
1007 | //\r | |
1008 | return EFI_ABORTED;\r | |
1009 | }\r | |
1010 | \r | |
1011 | //\r | |
1012 | // Hostbridge hasn't enough resource\r | |
1013 | //\r | |
1014 | PciResNode = GetMaxResourceConsumerDevice (ResPool[ResType]);\r | |
1015 | if (PciResNode == NULL) {\r | |
1016 | continue;\r | |
1017 | }\r | |
1018 | \r | |
1019 | //\r | |
1020 | // Check if the device has been removed before\r | |
1021 | //\r | |
1022 | for (DevIndex = 0; DevIndex < RemovedPciDevNum; DevIndex++) {\r | |
1023 | if (PciResNode->PciDev == RemovedPciDev[DevIndex]) {\r | |
1024 | break;\r | |
1025 | }\r | |
1026 | }\r | |
1027 | \r | |
1028 | if (DevIndex != RemovedPciDevNum) {\r | |
1029 | continue;\r | |
1030 | }\r | |
1031 | \r | |
1032 | //\r | |
1033 | // Remove the device if it isn't in the array\r | |
1034 | //\r | |
1035 | Status = RejectPciDevice (PciResNode->PciDev);\r | |
1036 | if (Status == EFI_SUCCESS) {\r | |
724f26a9 RN |
1037 | DEBUG ((\r |
1038 | EFI_D_ERROR,\r | |
1039 | "PciBus: [%02x|%02x|%02x] was rejected due to resource confliction.\n",\r | |
1040 | PciResNode->PciDev->BusNumber, PciResNode->PciDev->DeviceNumber, PciResNode->PciDev->FunctionNumber\r | |
1041 | ));\r | |
9060e3ec | 1042 | \r |
1043 | //\r | |
1044 | // Raise the EFI_IOB_EC_RESOURCE_CONFLICT status code\r | |
1045 | //\r | |
1046 | //\r | |
1047 | // Have no way to get ReqRes, AllocRes & Bar here\r | |
1048 | //\r | |
1049 | ZeroMem (&AllocFailExtendedData, sizeof (AllocFailExtendedData));\r | |
c9325700 | 1050 | AllocFailExtendedData.DevicePathSize = (UINT16) sizeof (EFI_DEVICE_PATH_PROTOCOL);\r |
9060e3ec | 1051 | AllocFailExtendedData.DevicePath = (UINT8 *) PciResNode->PciDev->DevicePath;\r |
1052 | AllocFailExtendedData.Bar = PciResNode->Bar;\r | |
1053 | \r | |
1054 | REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r | |
1055 | EFI_PROGRESS_CODE,\r | |
1056 | EFI_IO_BUS_PCI | EFI_IOB_EC_RESOURCE_CONFLICT,\r | |
1057 | (VOID *) &AllocFailExtendedData,\r | |
1058 | sizeof (AllocFailExtendedData)\r | |
1059 | );\r | |
1060 | \r | |
1061 | //\r | |
1062 | // Add it to the array and indicate at least a device has been rejected\r | |
1063 | //\r | |
1064 | RemovedPciDev[RemovedPciDevNum++] = PciResNode->PciDev;\r | |
1065 | AllocationAjusted = TRUE;\r | |
1066 | }\r | |
1067 | }\r | |
1068 | //\r | |
1069 | // End for\r | |
1070 | //\r | |
1071 | \r | |
1072 | if (AllocationAjusted) {\r | |
1073 | return EFI_SUCCESS;\r | |
1074 | } else {\r | |
1075 | return EFI_ABORTED;\r | |
1076 | }\r | |
1077 | }\r | |
1078 | \r | |
1079 | /**\r | |
1080 | Summary requests for all resource type, and contruct ACPI resource\r | |
1081 | requestor instance.\r | |
1082 | \r | |
1083 | @param Bridge detecting bridge\r | |
1084 | @param IoNode Pointer to instance of I/O resource Node\r | |
1085 | @param Mem32Node Pointer to instance of 32-bit memory resource Node\r | |
1086 | @param PMem32Node Pointer to instance of 32-bit Pmemory resource node\r | |
1087 | @param Mem64Node Pointer to instance of 64-bit memory resource node\r | |
1088 | @param PMem64Node Pointer to instance of 64-bit Pmemory resource node\r | |
1089 | @param Config Output buffer holding new constructed APCI resource requestor\r | |
1090 | \r | |
1091 | @retval EFI_SUCCESS Successfully constructed ACPI resource.\r | |
1092 | @retval EFI_OUT_OF_RESOURCES No memory availabe.\r | |
1093 | \r | |
1094 | **/\r | |
1095 | EFI_STATUS\r | |
1096 | ConstructAcpiResourceRequestor (\r | |
1097 | IN PCI_IO_DEVICE *Bridge,\r | |
1098 | IN PCI_RESOURCE_NODE *IoNode,\r | |
1099 | IN PCI_RESOURCE_NODE *Mem32Node,\r | |
1100 | IN PCI_RESOURCE_NODE *PMem32Node,\r | |
1101 | IN PCI_RESOURCE_NODE *Mem64Node,\r | |
1102 | IN PCI_RESOURCE_NODE *PMem64Node,\r | |
1103 | OUT VOID **Config\r | |
1104 | )\r | |
1105 | {\r | |
1106 | UINT8 NumConfig;\r | |
1107 | UINT8 Aperture;\r | |
1108 | UINT8 *Configuration;\r | |
1109 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;\r | |
1110 | EFI_ACPI_END_TAG_DESCRIPTOR *PtrEnd;\r | |
1111 | \r | |
1112 | NumConfig = 0;\r | |
1113 | Aperture = 0;\r | |
1114 | \r | |
1115 | *Config = NULL;\r | |
1116 | \r | |
1117 | //\r | |
1118 | // if there is io request, add to the io aperture\r | |
1119 | //\r | |
1120 | if (ResourceRequestExisted (IoNode)) {\r | |
1121 | NumConfig++;\r | |
1122 | Aperture |= 0x01;\r | |
1123 | }\r | |
1124 | \r | |
1125 | //\r | |
1126 | // if there is mem32 request, add to the mem32 aperture\r | |
1127 | //\r | |
1128 | if (ResourceRequestExisted (Mem32Node)) {\r | |
1129 | NumConfig++;\r | |
1130 | Aperture |= 0x02;\r | |
1131 | }\r | |
1132 | \r | |
1133 | //\r | |
1134 | // if there is pmem32 request, add to the pmem32 aperture\r | |
1135 | //\r | |
1136 | if (ResourceRequestExisted (PMem32Node)) {\r | |
1137 | NumConfig++;\r | |
1138 | Aperture |= 0x04;\r | |
1139 | }\r | |
1140 | \r | |
1141 | //\r | |
1142 | // if there is mem64 request, add to the mem64 aperture\r | |
1143 | //\r | |
1144 | if (ResourceRequestExisted (Mem64Node)) {\r | |
1145 | NumConfig++;\r | |
1146 | Aperture |= 0x08;\r | |
1147 | }\r | |
1148 | \r | |
1149 | //\r | |
1150 | // if there is pmem64 request, add to the pmem64 aperture\r | |
1151 | //\r | |
1152 | if (ResourceRequestExisted (PMem64Node)) {\r | |
1153 | NumConfig++;\r | |
1154 | Aperture |= 0x10;\r | |
1155 | }\r | |
1156 | \r | |
1157 | if (NumConfig != 0) {\r | |
1158 | \r | |
1159 | //\r | |
1160 | // If there is at least one type of resource request,\r | |
1161 | // allocate a acpi resource node\r | |
1162 | //\r | |
1163 | Configuration = AllocateZeroPool (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) * NumConfig + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR));\r | |
1164 | if (Configuration == NULL) {\r | |
1165 | return EFI_OUT_OF_RESOURCES;\r | |
1166 | }\r | |
1167 | \r | |
1168 | Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Configuration;\r | |
1169 | \r | |
1170 | //\r | |
1171 | // Deal with io aperture\r | |
1172 | //\r | |
1173 | if ((Aperture & 0x01) != 0) {\r | |
1174 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
c9325700 | 1175 | Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);\r |
9060e3ec | 1176 | //\r |
1177 | // Io\r | |
1178 | //\r | |
1179 | Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_IO;\r | |
1180 | //\r | |
1181 | // non ISA range\r | |
1182 | //\r | |
1183 | Ptr->SpecificFlag = 1;\r | |
1184 | Ptr->AddrLen = IoNode->Length;\r | |
1185 | Ptr->AddrRangeMax = IoNode->Alignment;\r | |
1186 | \r | |
1187 | Ptr++;\r | |
1188 | }\r | |
1189 | //\r | |
1190 | // Deal with mem32 aperture\r | |
1191 | //\r | |
1192 | if ((Aperture & 0x02) != 0) {\r | |
1193 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
cd7bfc2c | 1194 | Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);\r |
9060e3ec | 1195 | //\r |
1196 | // Mem\r | |
1197 | //\r | |
1198 | Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;\r | |
1199 | //\r | |
1200 | // Nonprefechable\r | |
1201 | //\r | |
1202 | Ptr->SpecificFlag = 0;\r | |
1203 | //\r | |
1204 | // 32 bit\r | |
1205 | //\r | |
1206 | Ptr->AddrSpaceGranularity = 32;\r | |
1207 | Ptr->AddrLen = Mem32Node->Length;\r | |
1208 | Ptr->AddrRangeMax = Mem32Node->Alignment;\r | |
1209 | \r | |
1210 | Ptr++;\r | |
1211 | }\r | |
1212 | \r | |
1213 | //\r | |
1214 | // Deal with Pmem32 aperture\r | |
1215 | //\r | |
1216 | if ((Aperture & 0x04) != 0) {\r | |
1217 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
cd7bfc2c | 1218 | Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);\r |
9060e3ec | 1219 | //\r |
1220 | // Mem\r | |
1221 | //\r | |
1222 | Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;\r | |
1223 | //\r | |
1224 | // prefechable\r | |
1225 | //\r | |
1226 | Ptr->SpecificFlag = 0x6;\r | |
1227 | //\r | |
1228 | // 32 bit\r | |
1229 | //\r | |
1230 | Ptr->AddrSpaceGranularity = 32;\r | |
1231 | Ptr->AddrLen = PMem32Node->Length;\r | |
1232 | Ptr->AddrRangeMax = PMem32Node->Alignment;\r | |
1233 | \r | |
1234 | Ptr++;\r | |
1235 | }\r | |
1236 | //\r | |
1237 | // Deal with mem64 aperture\r | |
1238 | //\r | |
1239 | if ((Aperture & 0x08) != 0) {\r | |
1240 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
cd7bfc2c | 1241 | Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);\r |
9060e3ec | 1242 | //\r |
1243 | // Mem\r | |
1244 | //\r | |
1245 | Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;\r | |
1246 | //\r | |
1247 | // nonprefechable\r | |
1248 | //\r | |
1249 | Ptr->SpecificFlag = 0;\r | |
1250 | //\r | |
1251 | // 64 bit\r | |
1252 | //\r | |
1253 | Ptr->AddrSpaceGranularity = 64;\r | |
1254 | Ptr->AddrLen = Mem64Node->Length;\r | |
1255 | Ptr->AddrRangeMax = Mem64Node->Alignment;\r | |
1256 | \r | |
1257 | Ptr++;\r | |
1258 | }\r | |
1259 | //\r | |
1260 | // Deal with Pmem64 aperture\r | |
1261 | //\r | |
1262 | if ((Aperture & 0x10) != 0) {\r | |
1263 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
cd7bfc2c | 1264 | Ptr->Len = (UINT16) (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3);\r |
9060e3ec | 1265 | //\r |
1266 | // Mem\r | |
1267 | //\r | |
1268 | Ptr->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;\r | |
1269 | //\r | |
1270 | // prefechable\r | |
1271 | //\r | |
1272 | Ptr->SpecificFlag = 0x06;\r | |
1273 | //\r | |
1274 | // 64 bit\r | |
1275 | //\r | |
1276 | Ptr->AddrSpaceGranularity = 64;\r | |
1277 | Ptr->AddrLen = PMem64Node->Length;\r | |
1278 | Ptr->AddrRangeMax = PMem64Node->Alignment;\r | |
1279 | \r | |
1280 | Ptr++;\r | |
1281 | }\r | |
1282 | \r | |
1283 | //\r | |
1284 | // put the checksum\r | |
1285 | //\r | |
1286 | PtrEnd = (EFI_ACPI_END_TAG_DESCRIPTOR *) Ptr;\r | |
1287 | \r | |
1288 | PtrEnd->Desc = ACPI_END_TAG_DESCRIPTOR;\r | |
1289 | PtrEnd->Checksum = 0;\r | |
1290 | \r | |
1291 | } else {\r | |
1292 | \r | |
1293 | //\r | |
1294 | // If there is no resource request\r | |
1295 | //\r | |
1296 | Configuration = AllocateZeroPool (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR));\r | |
1297 | if (Configuration == NULL) {\r | |
1298 | return EFI_OUT_OF_RESOURCES;\r | |
1299 | }\r | |
1300 | \r | |
1301 | Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) (Configuration);\r | |
1302 | Ptr->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;\r | |
1303 | \r | |
1304 | PtrEnd = (EFI_ACPI_END_TAG_DESCRIPTOR *) (Ptr + 1);\r | |
1305 | PtrEnd->Desc = ACPI_END_TAG_DESCRIPTOR;\r | |
1306 | PtrEnd->Checksum = 0;\r | |
1307 | }\r | |
1308 | \r | |
1309 | *Config = Configuration;\r | |
1310 | \r | |
1311 | return EFI_SUCCESS;\r | |
1312 | }\r | |
1313 | \r | |
1314 | /**\r | |
1315 | Get resource base from an acpi configuration descriptor.\r | |
1316 | \r | |
1317 | @param Config An acpi configuration descriptor.\r | |
1318 | @param IoBase Output of I/O resource base address.\r | |
1319 | @param Mem32Base Output of 32-bit memory base address.\r | |
1320 | @param PMem32Base Output of 32-bit prefetchable memory base address.\r | |
1321 | @param Mem64Base Output of 64-bit memory base address.\r | |
1322 | @param PMem64Base Output of 64-bit prefetchable memory base address.\r | |
1323 | \r | |
1324 | **/\r | |
1325 | VOID\r | |
1326 | GetResourceBase (\r | |
1327 | IN VOID *Config,\r | |
1328 | OUT UINT64 *IoBase,\r | |
1329 | OUT UINT64 *Mem32Base,\r | |
1330 | OUT UINT64 *PMem32Base,\r | |
1331 | OUT UINT64 *Mem64Base,\r | |
1332 | OUT UINT64 *PMem64Base\r | |
1333 | )\r | |
1334 | {\r | |
1335 | UINT8 *Temp;\r | |
1336 | EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;\r | |
1337 | UINT64 ResStatus;\r | |
1338 | \r | |
1339 | ASSERT (Config != NULL);\r | |
1340 | \r | |
1341 | *IoBase = 0xFFFFFFFFFFFFFFFFULL;\r | |
1342 | *Mem32Base = 0xFFFFFFFFFFFFFFFFULL;\r | |
1343 | *PMem32Base = 0xFFFFFFFFFFFFFFFFULL;\r | |
1344 | *Mem64Base = 0xFFFFFFFFFFFFFFFFULL;\r | |
1345 | *PMem64Base = 0xFFFFFFFFFFFFFFFFULL;\r | |
1346 | \r | |
1347 | Temp = (UINT8 *) Config;\r | |
1348 | \r | |
1349 | while (*Temp == ACPI_ADDRESS_SPACE_DESCRIPTOR) {\r | |
1350 | \r | |
1351 | Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp;\r | |
1352 | ResStatus = Ptr->AddrTranslationOffset;\r | |
1353 | \r | |
1354 | if (ResStatus == EFI_RESOURCE_SATISFIED) {\r | |
1355 | \r | |
1356 | switch (Ptr->ResType) {\r | |
1357 | \r | |
1358 | //\r | |
1359 | // Memory type aperture\r | |
1360 | //\r | |
1361 | case 0:\r | |
1362 | \r | |
1363 | //\r | |
1364 | // Check to see the granularity\r | |
1365 | //\r | |
1366 | if (Ptr->AddrSpaceGranularity == 32) {\r | |
1367 | if ((Ptr->SpecificFlag & 0x06) != 0) {\r | |
1368 | *PMem32Base = Ptr->AddrRangeMin;\r | |
1369 | } else {\r | |
1370 | *Mem32Base = Ptr->AddrRangeMin;\r | |
1371 | }\r | |
1372 | }\r | |
1373 | \r | |
1374 | if (Ptr->AddrSpaceGranularity == 64) {\r | |
1375 | if ((Ptr->SpecificFlag & 0x06) != 0) {\r | |
1376 | *PMem64Base = Ptr->AddrRangeMin;\r | |
1377 | } else {\r | |
1378 | *Mem64Base = Ptr->AddrRangeMin;\r | |
1379 | }\r | |
1380 | }\r | |
1381 | break;\r | |
1382 | \r | |
1383 | case 1:\r | |
1384 | \r | |
1385 | //\r | |
1386 | // Io type aperture\r | |
1387 | //\r | |
1388 | *IoBase = Ptr->AddrRangeMin;\r | |
1389 | break;\r | |
1390 | \r | |
1391 | default:\r | |
1392 | break;\r | |
1393 | \r | |
1394 | }\r | |
1395 | //\r | |
1396 | // End switch\r | |
1397 | //\r | |
1398 | }\r | |
1399 | //\r | |
1400 | // End for\r | |
1401 | //\r | |
1402 | Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);\r | |
1403 | }\r | |
1404 | }\r | |
1405 | \r | |
1406 | /**\r | |
1407 | Enumerate pci bridge, allocate resource and determine attribute\r | |
1408 | for devices on this bridge.\r | |
1409 | \r | |
1410 | @param BridgeDev Pointer to instance of bridge device.\r | |
1411 | \r | |
1412 | @retval EFI_SUCCESS Successfully enumerated PCI bridge.\r | |
1413 | @retval other Failed to enumerate.\r | |
1414 | \r | |
1415 | **/\r | |
1416 | EFI_STATUS\r | |
1417 | PciBridgeEnumerator (\r | |
1418 | IN PCI_IO_DEVICE *BridgeDev\r | |
1419 | )\r | |
1420 | {\r | |
1421 | UINT8 SubBusNumber;\r | |
1422 | UINT8 StartBusNumber;\r | |
1423 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
1424 | EFI_STATUS Status;\r | |
1425 | \r | |
1426 | SubBusNumber = 0;\r | |
1427 | StartBusNumber = 0;\r | |
1428 | PciIo = &(BridgeDev->PciIo);\r | |
1429 | Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0x19, 1, &StartBusNumber);\r | |
1430 | \r | |
1431 | if (EFI_ERROR (Status)) {\r | |
1432 | return Status;\r | |
1433 | }\r | |
1434 | \r | |
1435 | Status = PciAssignBusNumber (\r | |
1436 | BridgeDev,\r | |
1437 | StartBusNumber,\r | |
1438 | &SubBusNumber\r | |
1439 | );\r | |
1440 | \r | |
1441 | if (EFI_ERROR (Status)) {\r | |
1442 | return Status;\r | |
1443 | }\r | |
1444 | \r | |
1445 | Status = PciPciDeviceInfoCollector (BridgeDev, StartBusNumber);\r | |
1446 | \r | |
1447 | if (EFI_ERROR (Status)) {\r | |
1448 | return Status;\r | |
1449 | }\r | |
1450 | \r | |
1451 | Status = PciBridgeResourceAllocator (BridgeDev);\r | |
1452 | \r | |
1453 | if (EFI_ERROR (Status)) {\r | |
1454 | return Status;\r | |
1455 | }\r | |
1456 | \r | |
1457 | Status = DetermineDeviceAttribute (BridgeDev);\r | |
1458 | \r | |
1459 | if (EFI_ERROR (Status)) {\r | |
1460 | return Status;\r | |
1461 | }\r | |
1462 | \r | |
1463 | return EFI_SUCCESS;\r | |
1464 | \r | |
1465 | }\r | |
1466 | \r | |
1467 | /**\r | |
1468 | Allocate all kinds of resource for PCI bridge.\r | |
1469 | \r | |
1470 | @param Bridge Pointer to bridge instance.\r | |
1471 | \r | |
1472 | @retval EFI_SUCCESS Successfully allocated resource for PCI bridge.\r | |
1473 | @retval other Failed to allocate resource for bridge.\r | |
1474 | \r | |
1475 | **/\r | |
1476 | EFI_STATUS\r | |
1477 | PciBridgeResourceAllocator (\r | |
1478 | IN PCI_IO_DEVICE *Bridge\r | |
1479 | )\r | |
1480 | {\r | |
1481 | PCI_RESOURCE_NODE *IoBridge;\r | |
1482 | PCI_RESOURCE_NODE *Mem32Bridge;\r | |
1483 | PCI_RESOURCE_NODE *PMem32Bridge;\r | |
1484 | PCI_RESOURCE_NODE *Mem64Bridge;\r | |
1485 | PCI_RESOURCE_NODE *PMem64Bridge;\r | |
1486 | UINT64 IoBase;\r | |
1487 | UINT64 Mem32Base;\r | |
1488 | UINT64 PMem32Base;\r | |
1489 | UINT64 Mem64Base;\r | |
1490 | UINT64 PMem64Base;\r | |
1491 | EFI_STATUS Status;\r | |
1492 | \r | |
1493 | IoBridge = CreateResourceNode (\r | |
1494 | Bridge,\r | |
1495 | 0,\r | |
1ef26783 | 1496 | Bridge->BridgeIoAlignment,\r |
9060e3ec | 1497 | 0,\r |
1498 | PciBarTypeIo16,\r | |
1499 | PciResUsageTypical\r | |
1500 | );\r | |
1501 | \r | |
1502 | Mem32Bridge = CreateResourceNode (\r | |
1503 | Bridge,\r | |
1504 | 0,\r | |
1505 | 0xFFFFF,\r | |
1506 | 0,\r | |
1507 | PciBarTypeMem32,\r | |
1508 | PciResUsageTypical\r | |
1509 | );\r | |
1510 | \r | |
1511 | PMem32Bridge = CreateResourceNode (\r | |
1512 | Bridge,\r | |
1513 | 0,\r | |
1514 | 0xFFFFF,\r | |
1515 | 0,\r | |
1516 | PciBarTypePMem32,\r | |
1517 | PciResUsageTypical\r | |
1518 | );\r | |
1519 | \r | |
1520 | Mem64Bridge = CreateResourceNode (\r | |
1521 | Bridge,\r | |
1522 | 0,\r | |
1523 | 0xFFFFF,\r | |
1524 | 0,\r | |
1525 | PciBarTypeMem64,\r | |
1526 | PciResUsageTypical\r | |
1527 | );\r | |
1528 | \r | |
1529 | PMem64Bridge = CreateResourceNode (\r | |
1530 | Bridge,\r | |
1531 | 0,\r | |
1532 | 0xFFFFF,\r | |
1533 | 0,\r | |
1534 | PciBarTypePMem64,\r | |
1535 | PciResUsageTypical\r | |
1536 | );\r | |
1537 | \r | |
1538 | //\r | |
1539 | // Create resourcemap by going through all the devices subject to this root bridge\r | |
1540 | //\r | |
1541 | CreateResourceMap (\r | |
1542 | Bridge,\r | |
1543 | IoBridge,\r | |
1544 | Mem32Bridge,\r | |
1545 | PMem32Bridge,\r | |
1546 | Mem64Bridge,\r | |
1547 | PMem64Bridge\r | |
1548 | );\r | |
1549 | \r | |
1550 | Status = GetResourceBaseFromBridge (\r | |
1551 | Bridge,\r | |
1552 | &IoBase,\r | |
1553 | &Mem32Base,\r | |
1554 | &PMem32Base,\r | |
1555 | &Mem64Base,\r | |
1556 | &PMem64Base\r | |
1557 | );\r | |
1558 | \r | |
1559 | if (EFI_ERROR (Status)) {\r | |
1560 | return Status;\r | |
1561 | }\r | |
1562 | \r | |
1563 | //\r | |
1564 | // Program IO resources\r | |
1565 | //\r | |
1566 | ProgramResource (\r | |
1567 | IoBase,\r | |
1568 | IoBridge\r | |
1569 | );\r | |
1570 | \r | |
1571 | //\r | |
1572 | // Program Mem32 resources\r | |
1573 | //\r | |
1574 | ProgramResource (\r | |
1575 | Mem32Base,\r | |
1576 | Mem32Bridge\r | |
1577 | );\r | |
1578 | \r | |
1579 | //\r | |
1580 | // Program PMem32 resources\r | |
1581 | //\r | |
1582 | ProgramResource (\r | |
1583 | PMem32Base,\r | |
1584 | PMem32Bridge\r | |
1585 | );\r | |
1586 | \r | |
1587 | //\r | |
1588 | // Program Mem64 resources\r | |
1589 | //\r | |
1590 | ProgramResource (\r | |
1591 | Mem64Base,\r | |
1592 | Mem64Bridge\r | |
1593 | );\r | |
1594 | \r | |
1595 | //\r | |
1596 | // Program PMem64 resources\r | |
1597 | //\r | |
1598 | ProgramResource (\r | |
1599 | PMem64Base,\r | |
1600 | PMem64Bridge\r | |
1601 | );\r | |
1602 | \r | |
1603 | DestroyResourceTree (IoBridge);\r | |
1604 | DestroyResourceTree (Mem32Bridge);\r | |
1605 | DestroyResourceTree (PMem32Bridge);\r | |
1606 | DestroyResourceTree (PMem64Bridge);\r | |
1607 | DestroyResourceTree (Mem64Bridge);\r | |
1608 | \r | |
1609 | gBS->FreePool (IoBridge);\r | |
1610 | gBS->FreePool (Mem32Bridge);\r | |
1611 | gBS->FreePool (PMem32Bridge);\r | |
1612 | gBS->FreePool (PMem64Bridge);\r | |
1613 | gBS->FreePool (Mem64Bridge);\r | |
1614 | \r | |
1615 | return EFI_SUCCESS;\r | |
1616 | }\r | |
1617 | \r | |
1618 | /**\r | |
1619 | Get resource base address for a pci bridge device.\r | |
1620 | \r | |
1621 | @param Bridge Given Pci driver instance.\r | |
1622 | @param IoBase Output for base address of I/O type resource.\r | |
1623 | @param Mem32Base Output for base address of 32-bit memory type resource.\r | |
1624 | @param PMem32Base Ooutput for base address of 32-bit Pmemory type resource.\r | |
1625 | @param Mem64Base Output for base address of 64-bit memory type resource.\r | |
1626 | @param PMem64Base Output for base address of 64-bit Pmemory type resource.\r | |
1627 | \r | |
1628 | @retval EFI_SUCCESS Successfully got resource base address.\r | |
1629 | @retval EFI_OUT_OF_RESOURCES PCI bridge is not available.\r | |
1630 | \r | |
1631 | **/\r | |
1632 | EFI_STATUS\r | |
1633 | GetResourceBaseFromBridge (\r | |
1634 | IN PCI_IO_DEVICE *Bridge,\r | |
1635 | OUT UINT64 *IoBase,\r | |
1636 | OUT UINT64 *Mem32Base,\r | |
1637 | OUT UINT64 *PMem32Base,\r | |
1638 | OUT UINT64 *Mem64Base,\r | |
1639 | OUT UINT64 *PMem64Base\r | |
1640 | )\r | |
1641 | {\r | |
1642 | if (!Bridge->Allocated) {\r | |
1643 | return EFI_OUT_OF_RESOURCES;\r | |
1644 | }\r | |
1645 | \r | |
1646 | *IoBase = gAllOne;\r | |
1647 | *Mem32Base = gAllOne;\r | |
1648 | *PMem32Base = gAllOne;\r | |
1649 | *Mem64Base = gAllOne;\r | |
1650 | *PMem64Base = gAllOne;\r | |
1651 | \r | |
1652 | if (IS_PCI_BRIDGE (&Bridge->Pci)) {\r | |
1653 | \r | |
1654 | if (Bridge->PciBar[PPB_IO_RANGE].Length > 0) {\r | |
1655 | *IoBase = Bridge->PciBar[PPB_IO_RANGE].BaseAddress;\r | |
1656 | }\r | |
1657 | \r | |
1658 | if (Bridge->PciBar[PPB_MEM32_RANGE].Length > 0) {\r | |
1659 | *Mem32Base = Bridge->PciBar[PPB_MEM32_RANGE].BaseAddress;\r | |
1660 | }\r | |
1661 | \r | |
1662 | if (Bridge->PciBar[PPB_PMEM32_RANGE].Length > 0) {\r | |
1663 | *PMem32Base = Bridge->PciBar[PPB_PMEM32_RANGE].BaseAddress;\r | |
1664 | }\r | |
1665 | \r | |
1666 | if (Bridge->PciBar[PPB_PMEM64_RANGE].Length > 0) {\r | |
1667 | *PMem64Base = Bridge->PciBar[PPB_PMEM64_RANGE].BaseAddress;\r | |
1668 | } else {\r | |
1669 | *PMem64Base = gAllOne;\r | |
1670 | }\r | |
1671 | \r | |
1672 | }\r | |
1673 | \r | |
1674 | if (IS_CARDBUS_BRIDGE (&Bridge->Pci)) {\r | |
1675 | if (Bridge->PciBar[P2C_IO_1].Length > 0) {\r | |
1676 | *IoBase = Bridge->PciBar[P2C_IO_1].BaseAddress;\r | |
1677 | } else {\r | |
1678 | if (Bridge->PciBar[P2C_IO_2].Length > 0) {\r | |
1679 | *IoBase = Bridge->PciBar[P2C_IO_2].BaseAddress;\r | |
1680 | }\r | |
1681 | }\r | |
1682 | \r | |
1683 | if (Bridge->PciBar[P2C_MEM_1].Length > 0) {\r | |
1684 | if (Bridge->PciBar[P2C_MEM_1].BarType == PciBarTypePMem32) {\r | |
1685 | *PMem32Base = Bridge->PciBar[P2C_MEM_1].BaseAddress;\r | |
1686 | }\r | |
1687 | \r | |
1688 | if (Bridge->PciBar[P2C_MEM_1].BarType == PciBarTypeMem32) {\r | |
1689 | *Mem32Base = Bridge->PciBar[P2C_MEM_1].BaseAddress;\r | |
1690 | }\r | |
1691 | }\r | |
1692 | \r | |
1693 | if (Bridge->PciBar[P2C_MEM_2].Length > 0) {\r | |
1694 | if (Bridge->PciBar[P2C_MEM_2].BarType == PciBarTypePMem32) {\r | |
1695 | *PMem32Base = Bridge->PciBar[P2C_MEM_2].BaseAddress;\r | |
1696 | }\r | |
1697 | \r | |
1698 | if (Bridge->PciBar[P2C_MEM_2].BarType == PciBarTypeMem32) {\r | |
1699 | *Mem32Base = Bridge->PciBar[P2C_MEM_2].BaseAddress;\r | |
1700 | }\r | |
1701 | }\r | |
1702 | }\r | |
1703 | \r | |
1704 | return EFI_SUCCESS;\r | |
1705 | }\r | |
1706 | \r | |
1707 | /**\r | |
1708 | These are the notifications from the PCI bus driver that it is about to enter a certain\r | |
1709 | phase of the PCI enumeration process.\r | |
1710 | \r | |
1711 | This member function can be used to notify the host bridge driver to perform specific actions,\r | |
1712 | including any chipset-specific initialization, so that the chipset is ready to enter the next phase.\r | |
1713 | Eight notification points are defined at this time. See belows:\r | |
1714 | EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures and internal data\r | |
1715 | structures. The PCI enumerator should issue this notification\r | |
1716 | before starting a fresh enumeration process. Enumeration cannot\r | |
1717 | be restarted after sending any other notification such as\r | |
1718 | EfiPciHostBridgeBeginBusAllocation.\r | |
1719 | EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to begin. No specific action is\r | |
1720 | required here. This notification can be used to perform any\r | |
1721 | chipset-specific programming.\r | |
1722 | EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming phase is complete. No\r | |
1723 | specific action is required here. This notification can be used to\r | |
1724 | perform any chipset-specific programming.\r | |
1725 | EfiPciHostBridgeBeginResourceAllocation\r | |
1726 | The resource allocation phase is about to begin. No specific\r | |
1727 | action is required here. This notification can be used to perform\r | |
1728 | any chipset-specific programming.\r | |
1729 | EfiPciHostBridgeAllocateResources Allocates resources per previously submitted requests for all the PCI\r | |
1730 | root bridges. These resource settings are returned on the next call to\r | |
1731 | GetProposedResources(). Before calling NotifyPhase() with a Phase of\r | |
1732 | EfiPciHostBridgeAllocateResource, the PCI bus enumerator is responsible\r | |
1733 | for gathering I/O and memory requests for\r | |
1734 | all the PCI root bridges and submitting these requests using\r | |
1735 | SubmitResources(). This function pads the resource amount\r | |
1736 | to suit the root bridge hardware, takes care of dependencies between\r | |
1737 | the PCI root bridges, and calls the Global Coherency Domain (GCD)\r | |
1738 | with the allocation request. In the case of padding, the allocated range\r | |
1739 | could be bigger than what was requested.\r | |
1740 | EfiPciHostBridgeSetResources Programs the host bridge hardware to decode previously allocated\r | |
1741 | resources (proposed resources) for all the PCI root bridges. After the\r | |
1742 | hardware is programmed, reassigning resources will not be supported.\r | |
1743 | The bus settings are not affected.\r | |
1744 | EfiPciHostBridgeFreeResources Deallocates resources that were previously allocated for all the PCI\r | |
1745 | root bridges and resets the I/O and memory apertures to their initial\r | |
1746 | state. The bus settings are not affected. If the request to allocate\r | |
1747 | resources fails, the PCI enumerator can use this notification to\r | |
1748 | deallocate previous resources, adjust the requests, and retry\r | |
1749 | allocation.\r | |
1750 | EfiPciHostBridgeEndResourceAllocation The resource allocation phase is completed. No specific action is\r | |
1751 | required here. This notification can be used to perform any chipsetspecific\r | |
1752 | programming.\r | |
1753 | \r | |
1754 | @param[in] PciResAlloc The instance pointer of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL\r | |
1755 | @param[in] Phase The phase during enumeration\r | |
1756 | \r | |
1757 | @retval EFI_NOT_READY This phase cannot be entered at this time. For example, this error\r | |
1758 | is valid for a Phase of EfiPciHostBridgeAllocateResources if\r | |
1759 | SubmitResources() has not been called for one or more\r | |
1760 | PCI root bridges before this call\r | |
1761 | @retval EFI_DEVICE_ERROR Programming failed due to a hardware error. This error is valid\r | |
1762 | for a Phase of EfiPciHostBridgeSetResources.\r | |
1763 | @retval EFI_INVALID_PARAMETER Invalid phase parameter\r | |
1764 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
1765 | This error is valid for a Phase of EfiPciHostBridgeAllocateResources if the\r | |
1766 | previously submitted resource requests cannot be fulfilled or\r | |
1767 | were only partially fulfilled.\r | |
1768 | @retval EFI_SUCCESS The notification was accepted without any errors.\r | |
1769 | \r | |
1770 | **/\r | |
1771 | EFI_STATUS\r | |
1772 | NotifyPhase (\r | |
1773 | IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc,\r | |
1774 | EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase\r | |
1775 | )\r | |
1776 | {\r | |
1777 | EFI_HANDLE HostBridgeHandle;\r | |
1778 | EFI_HANDLE RootBridgeHandle;\r | |
1779 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
1780 | EFI_STATUS Status;\r | |
1781 | \r | |
1782 | HostBridgeHandle = NULL;\r | |
1783 | RootBridgeHandle = NULL;\r | |
1784 | if (gPciPlatformProtocol != NULL) {\r | |
1785 | //\r | |
1786 | // Get Host Bridge Handle.\r | |
1787 | //\r | |
1788 | PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle);\r | |
1789 | \r | |
1790 | //\r | |
1791 | // Get the rootbridge Io protocol to find the host bridge handle\r | |
1792 | //\r | |
1793 | Status = gBS->HandleProtocol (\r | |
1794 | RootBridgeHandle,\r | |
1795 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
1796 | (VOID **) &PciRootBridgeIo\r | |
1797 | );\r | |
1798 | \r | |
1799 | if (EFI_ERROR (Status)) {\r | |
1800 | return EFI_NOT_FOUND;\r | |
1801 | }\r | |
1802 | \r | |
1803 | HostBridgeHandle = PciRootBridgeIo->ParentHandle;\r | |
1804 | \r | |
1805 | //\r | |
1806 | // Call PlatformPci::PlatformNotify() if the protocol is present.\r | |
1807 | //\r | |
1808 | gPciPlatformProtocol->PlatformNotify (\r | |
1809 | gPciPlatformProtocol,\r | |
1810 | HostBridgeHandle,\r | |
1811 | Phase,\r | |
1812 | ChipsetEntry\r | |
1813 | );\r | |
1814 | } else if (gPciOverrideProtocol != NULL){\r | |
1815 | //\r | |
1816 | // Get Host Bridge Handle.\r | |
1817 | //\r | |
1818 | PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle);\r | |
1819 | \r | |
1820 | //\r | |
1821 | // Get the rootbridge Io protocol to find the host bridge handle\r | |
1822 | //\r | |
1823 | Status = gBS->HandleProtocol (\r | |
1824 | RootBridgeHandle,\r | |
1825 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
1826 | (VOID **) &PciRootBridgeIo\r | |
1827 | );\r | |
1828 | \r | |
1829 | if (EFI_ERROR (Status)) {\r | |
1830 | return EFI_NOT_FOUND;\r | |
1831 | }\r | |
1832 | \r | |
1833 | HostBridgeHandle = PciRootBridgeIo->ParentHandle;\r | |
1834 | \r | |
1835 | //\r | |
1836 | // Call PlatformPci::PhaseNotify() if the protocol is present.\r | |
1837 | //\r | |
1838 | gPciOverrideProtocol->PlatformNotify (\r | |
1839 | gPciOverrideProtocol,\r | |
1840 | HostBridgeHandle,\r | |
1841 | Phase,\r | |
1842 | ChipsetEntry\r | |
1843 | );\r | |
1844 | } \r | |
1845 | \r | |
1846 | Status = PciResAlloc->NotifyPhase (\r | |
1847 | PciResAlloc,\r | |
1848 | Phase\r | |
1849 | );\r | |
1850 | \r | |
1851 | if (gPciPlatformProtocol != NULL) {\r | |
1852 | //\r | |
1853 | // Call PlatformPci::PlatformNotify() if the protocol is present.\r | |
1854 | //\r | |
1855 | gPciPlatformProtocol->PlatformNotify (\r | |
1856 | gPciPlatformProtocol,\r | |
1857 | HostBridgeHandle,\r | |
1858 | Phase,\r | |
1859 | ChipsetExit\r | |
1860 | );\r | |
1861 | \r | |
1862 | } else if (gPciOverrideProtocol != NULL) {\r | |
1863 | //\r | |
1864 | // Call PlatformPci::PhaseNotify() if the protocol is present.\r | |
1865 | //\r | |
1866 | gPciOverrideProtocol->PlatformNotify (\r | |
1867 | gPciOverrideProtocol,\r | |
1868 | HostBridgeHandle,\r | |
1869 | Phase,\r | |
1870 | ChipsetExit\r | |
1871 | );\r | |
1872 | }\r | |
1873 | \r | |
724f26a9 | 1874 | return Status;\r |
9060e3ec | 1875 | }\r |
1876 | \r | |
1877 | /**\r | |
1878 | Provides the hooks from the PCI bus driver to every PCI controller (device/function) at various\r | |
1879 | stages of the PCI enumeration process that allow the host bridge driver to preinitialize individual\r | |
1880 | PCI controllers before enumeration.\r | |
1881 | \r | |
1882 | This function is called during the PCI enumeration process. No specific action is expected from this\r | |
1883 | member function. It allows the host bridge driver to preinitialize individual PCI controllers before\r | |
1884 | enumeration.\r | |
1885 | \r | |
1886 | @param Bridge Pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance.\r | |
1887 | @param Bus The bus number of the pci device.\r | |
1888 | @param Device The device number of the pci device.\r | |
1889 | @param Func The function number of the pci device.\r | |
1890 | @param Phase The phase of the PCI device enumeration.\r | |
1891 | \r | |
1892 | @retval EFI_SUCCESS The requested parameters were returned.\r | |
1893 | @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.\r | |
1894 | @retval EFI_INVALID_PARAMETER Phase is not a valid phase that is defined in\r | |
1895 | EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.\r | |
1896 | @retval EFI_DEVICE_ERROR Programming failed due to a hardware error. The PCI enumerator should\r | |
1897 | not enumerate this device, including its child devices if it is a PCI-to-PCI\r | |
1898 | bridge.\r | |
1899 | \r | |
1900 | **/\r | |
1901 | EFI_STATUS\r | |
1902 | PreprocessController (\r | |
1903 | IN PCI_IO_DEVICE *Bridge,\r | |
1904 | IN UINT8 Bus,\r | |
1905 | IN UINT8 Device,\r | |
1906 | IN UINT8 Func,\r | |
1907 | IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase\r | |
1908 | )\r | |
1909 | {\r | |
1910 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS RootBridgePciAddress;\r | |
1911 | EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc;\r | |
1912 | EFI_HANDLE RootBridgeHandle;\r | |
1913 | EFI_HANDLE HostBridgeHandle;\r | |
1914 | EFI_STATUS Status;\r | |
1915 | \r | |
1916 | //\r | |
1917 | // Get the host bridge handle\r | |
1918 | //\r | |
1919 | HostBridgeHandle = Bridge->PciRootBridgeIo->ParentHandle;\r | |
1920 | \r | |
1921 | //\r | |
1922 | // Get the pci host bridge resource allocation protocol\r | |
1923 | //\r | |
1924 | Status = gBS->OpenProtocol (\r | |
1925 | HostBridgeHandle,\r | |
1926 | &gEfiPciHostBridgeResourceAllocationProtocolGuid,\r | |
1927 | (VOID **) &PciResAlloc,\r | |
1928 | NULL,\r | |
1929 | NULL,\r | |
1930 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
1931 | );\r | |
1932 | \r | |
1933 | if (EFI_ERROR (Status)) {\r | |
1934 | return EFI_UNSUPPORTED;\r | |
1935 | }\r | |
1936 | \r | |
1937 | //\r | |
1938 | // Get Root Brige Handle\r | |
1939 | //\r | |
1940 | while (Bridge->Parent != NULL) {\r | |
1941 | Bridge = Bridge->Parent;\r | |
1942 | }\r | |
1943 | \r | |
1944 | RootBridgeHandle = Bridge->Handle;\r | |
1945 | \r | |
1946 | RootBridgePciAddress.Register = 0;\r | |
1947 | RootBridgePciAddress.Function = Func;\r | |
1948 | RootBridgePciAddress.Device = Device;\r | |
1949 | RootBridgePciAddress.Bus = Bus;\r | |
1950 | RootBridgePciAddress.ExtendedRegister = 0;\r | |
1951 | \r | |
1952 | if (gPciPlatformProtocol != NULL) {\r | |
1953 | //\r | |
1954 | // Call PlatformPci::PrepController() if the protocol is present.\r | |
1955 | //\r | |
1956 | gPciPlatformProtocol->PlatformPrepController (\r | |
1957 | gPciPlatformProtocol,\r | |
1958 | HostBridgeHandle,\r | |
1959 | RootBridgeHandle,\r | |
1960 | RootBridgePciAddress,\r | |
1961 | Phase,\r | |
1962 | ChipsetEntry\r | |
1963 | );\r | |
1964 | } else if (gPciOverrideProtocol != NULL) {\r | |
1965 | //\r | |
1966 | // Call PlatformPci::PrepController() if the protocol is present.\r | |
1967 | //\r | |
1968 | gPciOverrideProtocol->PlatformPrepController (\r | |
1969 | gPciOverrideProtocol,\r | |
1970 | HostBridgeHandle,\r | |
1971 | RootBridgeHandle,\r | |
1972 | RootBridgePciAddress,\r | |
1973 | Phase,\r | |
1974 | ChipsetEntry\r | |
1975 | );\r | |
1976 | }\r | |
1977 | \r | |
1978 | Status = PciResAlloc->PreprocessController (\r | |
1979 | PciResAlloc,\r | |
1980 | RootBridgeHandle,\r | |
1981 | RootBridgePciAddress,\r | |
1982 | Phase\r | |
1983 | );\r | |
1984 | \r | |
1985 | if (gPciPlatformProtocol != NULL) {\r | |
1986 | //\r | |
1987 | // Call PlatformPci::PrepController() if the protocol is present.\r | |
1988 | //\r | |
1989 | gPciPlatformProtocol->PlatformPrepController (\r | |
1990 | gPciPlatformProtocol,\r | |
1991 | HostBridgeHandle,\r | |
1992 | RootBridgeHandle,\r | |
1993 | RootBridgePciAddress,\r | |
1994 | Phase,\r | |
1995 | ChipsetExit\r | |
1996 | );\r | |
1997 | } else if (gPciOverrideProtocol != NULL) {\r | |
1998 | //\r | |
1999 | // Call PlatformPci::PrepController() if the protocol is present.\r | |
2000 | //\r | |
2001 | gPciOverrideProtocol->PlatformPrepController (\r | |
2002 | gPciOverrideProtocol,\r | |
2003 | HostBridgeHandle,\r | |
2004 | RootBridgeHandle,\r | |
2005 | RootBridgePciAddress,\r | |
2006 | Phase,\r | |
2007 | ChipsetExit\r | |
2008 | );\r | |
2009 | }\r | |
2010 | \r | |
2011 | return EFI_SUCCESS;\r | |
2012 | }\r | |
2013 | \r | |
2014 | /**\r | |
2015 | This function allows the PCI bus driver to be notified to act as requested when a hot-plug event has\r | |
2016 | happened on the hot-plug controller. Currently, the operations include add operation and remove operation..\r | |
2017 | \r | |
2018 | @param This A pointer to the hot plug request protocol.\r | |
2019 | @param Operation The operation the PCI bus driver is requested to make.\r | |
2020 | @param Controller The handle of the hot-plug controller.\r | |
2021 | @param RemainingDevicePath The remaining device path for the PCI-like hot-plug device.\r | |
2022 | @param NumberOfChildren The number of child handles.\r | |
2023 | For a add operation, it is an output parameter.\r | |
2024 | For a remove operation, it's an input parameter.\r | |
2025 | @param ChildHandleBuffer The buffer which contains the child handles.\r | |
2026 | \r | |
2027 | @retval EFI_INVALID_PARAMETER Operation is not a legal value.\r | |
2028 | Controller is NULL or not a valid handle.\r | |
2029 | NumberOfChildren is NULL.\r | |
2030 | ChildHandleBuffer is NULL while Operation is add.\r | |
2031 | @retval EFI_OUT_OF_RESOURCES There are no enough resources to start the devices.\r | |
2032 | @retval EFI_NOT_FOUND Can not find bridge according to controller handle.\r | |
2033 | @retval EFI_SUCCESS The handles for the specified device have been created or destroyed\r | |
2034 | as requested, and for an add operation, the new handles are\r | |
2035 | returned in ChildHandleBuffer.\r | |
2036 | **/\r | |
2037 | EFI_STATUS\r | |
2038 | EFIAPI\r | |
2039 | PciHotPlugRequestNotify (\r | |
2040 | IN EFI_PCI_HOTPLUG_REQUEST_PROTOCOL * This,\r | |
2041 | IN EFI_PCI_HOTPLUG_OPERATION Operation,\r | |
2042 | IN EFI_HANDLE Controller,\r | |
2043 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL,\r | |
2044 | IN OUT UINT8 *NumberOfChildren,\r | |
2045 | IN OUT EFI_HANDLE * ChildHandleBuffer\r | |
2046 | )\r | |
2047 | {\r | |
2048 | PCI_IO_DEVICE *Bridge;\r | |
2049 | PCI_IO_DEVICE *Temp;\r | |
2050 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
2051 | UINTN Index;\r | |
2052 | EFI_HANDLE RootBridgeHandle;\r | |
2053 | EFI_STATUS Status;\r | |
2054 | \r | |
2055 | //\r | |
2056 | // Check input parameter validity\r | |
2057 | //\r | |
2058 | if ((Controller == NULL) || (NumberOfChildren == NULL)){\r | |
2059 | return EFI_INVALID_PARAMETER;\r | |
2060 | }\r | |
2061 | \r | |
2062 | if ((Operation != EfiPciHotPlugRequestAdd) && (Operation != EfiPciHotplugRequestRemove)) {\r | |
2063 | return EFI_INVALID_PARAMETER;\r | |
2064 | }\r | |
2065 | \r | |
2066 | if (Operation == EfiPciHotPlugRequestAdd){\r | |
2067 | if (ChildHandleBuffer == NULL) {\r | |
2068 | return EFI_INVALID_PARAMETER;\r | |
2069 | }\r | |
2070 | } else if ((Operation == EfiPciHotplugRequestRemove) && (*NumberOfChildren != 0)) {\r | |
2071 | if (ChildHandleBuffer == NULL) {\r | |
2072 | return EFI_INVALID_PARAMETER;\r | |
2073 | }\r | |
2074 | }\r | |
2075 | \r | |
2076 | Status = gBS->OpenProtocol (\r | |
2077 | Controller,\r | |
2078 | &gEfiPciIoProtocolGuid,\r | |
2079 | (VOID **) &PciIo,\r | |
2080 | gPciBusDriverBinding.DriverBindingHandle,\r | |
2081 | Controller,\r | |
2082 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
2083 | );\r | |
2084 | \r | |
2085 | if (EFI_ERROR (Status)) {\r | |
2086 | return EFI_NOT_FOUND;\r | |
2087 | }\r | |
2088 | \r | |
2089 | Bridge = PCI_IO_DEVICE_FROM_PCI_IO_THIS (PciIo);\r | |
2090 | \r | |
2091 | //\r | |
2092 | // Get root bridge handle\r | |
2093 | //\r | |
2094 | Temp = Bridge;\r | |
2095 | while (Temp->Parent != NULL) {\r | |
2096 | Temp = Temp->Parent;\r | |
2097 | }\r | |
2098 | \r | |
2099 | RootBridgeHandle = Temp->Handle;\r | |
2100 | \r | |
2101 | if (Operation == EfiPciHotPlugRequestAdd) {\r | |
37623a5c | 2102 | //\r |
2103 | // Report Status Code to indicate hot plug happens\r | |
2104 | //\r | |
2105 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
2106 | EFI_PROGRESS_CODE,\r | |
2107 | (EFI_IO_BUS_PCI | EFI_IOB_PC_HOTPLUG),\r | |
2108 | Temp->DevicePath\r | |
2109 | );\r | |
9060e3ec | 2110 | \r |
2111 | if (NumberOfChildren != NULL) {\r | |
2112 | *NumberOfChildren = 0;\r | |
2113 | }\r | |
2114 | \r | |
2115 | if (IsListEmpty (&Bridge->ChildList)) {\r | |
2116 | \r | |
2117 | Status = PciBridgeEnumerator (Bridge);\r | |
2118 | \r | |
2119 | if (EFI_ERROR (Status)) {\r | |
2120 | return Status;\r | |
2121 | }\r | |
2122 | }\r | |
2123 | \r | |
2124 | Status = StartPciDevicesOnBridge (\r | |
2125 | RootBridgeHandle,\r | |
2126 | Bridge,\r | |
2127 | RemainingDevicePath,\r | |
2128 | NumberOfChildren,\r | |
2129 | ChildHandleBuffer\r | |
2130 | );\r | |
2131 | \r | |
2132 | return Status;\r | |
2133 | }\r | |
2134 | \r | |
2135 | if (Operation == EfiPciHotplugRequestRemove) {\r | |
2136 | \r | |
2137 | if (*NumberOfChildren == 0) {\r | |
2138 | //\r | |
2139 | // Remove all devices on the bridge\r | |
2140 | //\r | |
2141 | RemoveAllPciDeviceOnBridge (RootBridgeHandle, Bridge);\r | |
2142 | return EFI_SUCCESS;\r | |
2143 | \r | |
2144 | }\r | |
2145 | \r | |
2146 | for (Index = 0; Index < *NumberOfChildren; Index++) {\r | |
2147 | //\r | |
2148 | // De register all the pci device\r | |
2149 | //\r | |
2150 | Status = DeRegisterPciDevice (RootBridgeHandle, ChildHandleBuffer[Index]);\r | |
2151 | \r | |
2152 | if (EFI_ERROR (Status)) {\r | |
2153 | return Status;\r | |
2154 | }\r | |
2155 | \r | |
2156 | }\r | |
2157 | //\r | |
2158 | // End for\r | |
2159 | //\r | |
2160 | return EFI_SUCCESS;\r | |
2161 | }\r | |
2162 | \r | |
2163 | return EFI_SUCCESS;\r | |
2164 | }\r | |
2165 | \r | |
2166 | /**\r | |
2167 | Search hostbridge according to given handle\r | |
2168 | \r | |
2169 | @param RootBridgeHandle Host bridge handle.\r | |
2170 | \r | |
2171 | @retval TRUE Found host bridge handle.\r | |
2172 | @retval FALSE Not found hot bridge handle.\r | |
2173 | \r | |
2174 | **/\r | |
2175 | BOOLEAN\r | |
2176 | SearchHostBridgeHandle (\r | |
2177 | IN EFI_HANDLE RootBridgeHandle\r | |
2178 | )\r | |
2179 | {\r | |
2180 | EFI_HANDLE HostBridgeHandle;\r | |
2181 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
2182 | UINTN Index;\r | |
2183 | EFI_STATUS Status;\r | |
2184 | \r | |
2185 | //\r | |
2186 | // Get the rootbridge Io protocol to find the host bridge handle\r | |
2187 | //\r | |
2188 | Status = gBS->OpenProtocol (\r | |
2189 | RootBridgeHandle,\r | |
2190 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
2191 | (VOID **) &PciRootBridgeIo,\r | |
2192 | gPciBusDriverBinding.DriverBindingHandle,\r | |
2193 | RootBridgeHandle,\r | |
2194 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
2195 | );\r | |
2196 | \r | |
2197 | if (EFI_ERROR (Status)) {\r | |
2198 | return FALSE;\r | |
2199 | }\r | |
2200 | \r | |
2201 | HostBridgeHandle = PciRootBridgeIo->ParentHandle;\r | |
2202 | for (Index = 0; Index < gPciHostBridgeNumber; Index++) {\r | |
2203 | if (HostBridgeHandle == gPciHostBrigeHandles[Index]) {\r | |
2204 | return TRUE;\r | |
2205 | }\r | |
2206 | }\r | |
2207 | \r | |
2208 | return FALSE;\r | |
2209 | }\r | |
2210 | \r | |
2211 | /**\r | |
2212 | Add host bridge handle to global variable for enumerating.\r | |
2213 | \r | |
2214 | @param HostBridgeHandle Host bridge handle.\r | |
2215 | \r | |
2216 | @retval EFI_SUCCESS Successfully added host bridge.\r | |
2217 | @retval EFI_ABORTED Host bridge is NULL, or given host bridge\r | |
2218 | has been in host bridge list.\r | |
2219 | \r | |
2220 | **/\r | |
2221 | EFI_STATUS\r | |
2222 | AddHostBridgeEnumerator (\r | |
2223 | IN EFI_HANDLE HostBridgeHandle\r | |
2224 | )\r | |
2225 | {\r | |
2226 | UINTN Index;\r | |
2227 | \r | |
2228 | if (HostBridgeHandle == NULL) {\r | |
2229 | return EFI_ABORTED;\r | |
2230 | }\r | |
2231 | \r | |
2232 | for (Index = 0; Index < gPciHostBridgeNumber; Index++) {\r | |
2233 | if (HostBridgeHandle == gPciHostBrigeHandles[Index]) {\r | |
2234 | return EFI_ABORTED;\r | |
2235 | }\r | |
2236 | }\r | |
2237 | \r | |
2238 | if (Index < PCI_MAX_HOST_BRIDGE_NUM) {\r | |
2239 | gPciHostBrigeHandles[Index] = HostBridgeHandle;\r | |
2240 | gPciHostBridgeNumber++;\r | |
2241 | }\r | |
2242 | \r | |
2243 | return EFI_SUCCESS;\r | |
2244 | }\r | |
2245 | \r |