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ead42efc | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006 - 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | PciDeviceSupport.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | This file provides routine to support Pci device node manipulation\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include "pcibus.h"\r | |
25 | #include "PciDeviceSupport.h"\r | |
26 | \r | |
27 | //\r | |
28 | // This device structure is serviced as a header.\r | |
29 | // Its Next field points to the first root bridge device node\r | |
30 | //\r | |
31 | LIST_ENTRY gPciDevicePool;\r | |
32 | \r | |
33 | EFI_STATUS\r | |
34 | InitializePciDevicePool (\r | |
35 | VOID\r | |
36 | )\r | |
37 | /*++\r | |
38 | \r | |
39 | Routine Description:\r | |
40 | \r | |
41 | Initialize the gPciDevicePool\r | |
42 | \r | |
43 | Arguments:\r | |
44 | \r | |
45 | Returns:\r | |
46 | \r | |
47 | None\r | |
48 | \r | |
49 | --*/\r | |
50 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
51 | {\r | |
52 | InitializeListHead (&gPciDevicePool);\r | |
53 | \r | |
54 | return EFI_SUCCESS;\r | |
55 | }\r | |
56 | \r | |
57 | EFI_STATUS\r | |
58 | InsertRootBridge (\r | |
59 | PCI_IO_DEVICE *RootBridge\r | |
60 | )\r | |
61 | /*++\r | |
62 | \r | |
63 | Routine Description:\r | |
64 | \r | |
65 | Insert a root bridge into PCI device pool\r | |
66 | \r | |
67 | Arguments:\r | |
68 | \r | |
69 | RootBridge - A pointer to the PCI_IO_DEVICE.\r | |
70 | \r | |
71 | Returns:\r | |
72 | \r | |
73 | None\r | |
74 | \r | |
75 | --*/\r | |
76 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
77 | {\r | |
78 | \r | |
79 | InsertTailList (&gPciDevicePool, &(RootBridge->Link));\r | |
80 | \r | |
81 | return EFI_SUCCESS;\r | |
82 | }\r | |
83 | \r | |
84 | EFI_STATUS\r | |
85 | InsertPciDevice (\r | |
86 | PCI_IO_DEVICE *Bridge,\r | |
87 | PCI_IO_DEVICE *PciDeviceNode\r | |
88 | )\r | |
89 | /*++\r | |
90 | \r | |
91 | Routine Description:\r | |
92 | \r | |
93 | This function is used to insert a PCI device node under\r | |
94 | a bridge\r | |
95 | \r | |
96 | Arguments:\r | |
97 | Bridge - A pointer to the PCI_IO_DEVICE.\r | |
98 | PciDeviceNode - A pointer to the PCI_IO_DEVICE.\r | |
99 | \r | |
100 | Returns:\r | |
101 | \r | |
102 | None\r | |
103 | \r | |
104 | --*/\r | |
105 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
106 | {\r | |
107 | \r | |
108 | InsertTailList (&Bridge->ChildList, &(PciDeviceNode->Link));\r | |
109 | PciDeviceNode->Parent = Bridge;\r | |
110 | \r | |
111 | return EFI_SUCCESS;\r | |
112 | }\r | |
113 | \r | |
114 | EFI_STATUS\r | |
115 | DestroyRootBridge (\r | |
116 | IN PCI_IO_DEVICE *RootBridge\r | |
117 | )\r | |
118 | /*++\r | |
119 | \r | |
120 | Routine Description:\r | |
121 | \r | |
122 | \r | |
123 | Arguments:\r | |
124 | \r | |
125 | RootBridge - A pointer to the PCI_IO_DEVICE.\r | |
126 | \r | |
127 | Returns:\r | |
128 | \r | |
129 | None\r | |
130 | \r | |
131 | --*/\r | |
132 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
133 | {\r | |
134 | DestroyPciDeviceTree (RootBridge);\r | |
135 | \r | |
136 | FreePciDevice (RootBridge);\r | |
137 | \r | |
138 | return EFI_SUCCESS;\r | |
139 | }\r | |
140 | \r | |
141 | EFI_STATUS\r | |
142 | FreePciDevice (\r | |
143 | IN PCI_IO_DEVICE *PciIoDevice\r | |
144 | )\r | |
145 | /*++\r | |
146 | \r | |
147 | Routine Description:\r | |
148 | \r | |
149 | Destroy a pci device node.\r | |
150 | Also all direct or indirect allocated resource for this node will be freed.\r | |
151 | \r | |
152 | Arguments:\r | |
153 | \r | |
154 | PciIoDevice - A pointer to the PCI_IO_DEVICE.\r | |
155 | \r | |
156 | Returns:\r | |
157 | \r | |
158 | None\r | |
159 | \r | |
160 | --*/\r | |
161 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
162 | {\r | |
163 | \r | |
164 | //\r | |
165 | // Assume all children have been removed underneath this device\r | |
166 | //\r | |
167 | if (PciIoDevice->ResourcePaddingDescriptors != NULL) {\r | |
168 | gBS->FreePool (PciIoDevice->ResourcePaddingDescriptors);\r | |
169 | }\r | |
170 | \r | |
171 | if (PciIoDevice->DevicePath != NULL) {\r | |
172 | gBS->FreePool (PciIoDevice->DevicePath);\r | |
173 | }\r | |
174 | \r | |
175 | gBS->FreePool (PciIoDevice);\r | |
176 | \r | |
177 | return EFI_SUCCESS;\r | |
178 | }\r | |
179 | \r | |
180 | EFI_STATUS\r | |
181 | DestroyPciDeviceTree (\r | |
182 | IN PCI_IO_DEVICE *Bridge\r | |
183 | )\r | |
184 | /*++\r | |
185 | \r | |
186 | Routine Description:\r | |
187 | \r | |
188 | Destroy all the pci device node under the bridge.\r | |
189 | Bridge itself is not included.\r | |
190 | \r | |
191 | Arguments:\r | |
192 | \r | |
193 | Bridge - A pointer to the PCI_IO_DEVICE.\r | |
194 | \r | |
195 | Returns:\r | |
196 | \r | |
197 | None\r | |
198 | \r | |
199 | --*/\r | |
200 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
201 | {\r | |
202 | LIST_ENTRY *CurrentLink;\r | |
203 | PCI_IO_DEVICE *Temp;\r | |
204 | \r | |
205 | while (!IsListEmpty (&Bridge->ChildList)) {\r | |
206 | \r | |
207 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
208 | \r | |
209 | //\r | |
210 | // Remove this node from the linked list\r | |
211 | //\r | |
212 | RemoveEntryList (CurrentLink);\r | |
213 | \r | |
214 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
215 | \r | |
216 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
217 | DestroyPciDeviceTree (Temp);\r | |
218 | }\r | |
219 | \r | |
220 | FreePciDevice (Temp);\r | |
221 | }\r | |
222 | \r | |
223 | return EFI_SUCCESS;\r | |
224 | }\r | |
225 | \r | |
226 | EFI_STATUS\r | |
227 | DestroyRootBridgeByHandle (\r | |
228 | EFI_HANDLE Controller\r | |
229 | )\r | |
230 | /*++\r | |
231 | \r | |
232 | Routine Description:\r | |
233 | \r | |
234 | Destroy all device nodes under the root bridge\r | |
235 | specified by Controller.\r | |
236 | The root bridge itself is also included.\r | |
237 | \r | |
238 | Arguments:\r | |
239 | \r | |
240 | Controller - An efi handle.\r | |
241 | \r | |
242 | Returns:\r | |
243 | \r | |
244 | None\r | |
245 | \r | |
246 | --*/\r | |
247 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
248 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
249 | {\r | |
250 | \r | |
251 | LIST_ENTRY *CurrentLink;\r | |
252 | PCI_IO_DEVICE *Temp;\r | |
253 | \r | |
254 | CurrentLink = gPciDevicePool.ForwardLink;\r | |
255 | \r | |
256 | while (CurrentLink && CurrentLink != &gPciDevicePool) {\r | |
257 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
258 | \r | |
259 | if (Temp->Handle == Controller) {\r | |
260 | \r | |
261 | RemoveEntryList (CurrentLink);\r | |
262 | \r | |
263 | DestroyPciDeviceTree (Temp);\r | |
264 | \r | |
265 | FreePciDevice (Temp);\r | |
266 | \r | |
267 | return EFI_SUCCESS;\r | |
268 | }\r | |
269 | \r | |
270 | CurrentLink = CurrentLink->ForwardLink;\r | |
271 | }\r | |
272 | \r | |
273 | return EFI_NOT_FOUND;\r | |
274 | }\r | |
275 | \r | |
276 | EFI_STATUS\r | |
277 | RegisterPciDevice (\r | |
278 | IN EFI_HANDLE Controller,\r | |
279 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
280 | OUT EFI_HANDLE *Handle OPTIONAL\r | |
281 | )\r | |
282 | /*++\r | |
283 | \r | |
284 | Routine Description:\r | |
285 | \r | |
286 | This function registers the PCI IO device. It creates a handle for this PCI IO device\r | |
287 | (if the handle does not exist), attaches appropriate protocols onto the handle, does\r | |
288 | necessary initialization, and sets up parent/child relationship with its bus controller.\r | |
289 | \r | |
290 | Arguments:\r | |
291 | \r | |
292 | Controller - An EFI handle for the PCI bus controller.\r | |
293 | PciIoDevice - A PCI_IO_DEVICE pointer to the PCI IO device to be registered.\r | |
294 | Handle - A pointer to hold the EFI handle for the PCI IO device.\r | |
295 | \r | |
296 | Returns:\r | |
297 | \r | |
298 | EFI_SUCCESS - The PCI device is successfully registered.\r | |
299 | Others - An error occurred when registering the PCI device.\r | |
300 | \r | |
301 | --*/\r | |
302 | {\r | |
303 | EFI_STATUS Status;\r | |
304 | VOID *PlatformOpRomBuffer;\r | |
305 | UINTN PlatformOpRomSize;\r | |
306 | UINT8 PciExpressCapRegOffset;\r | |
307 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
308 | UINT8 Data8;\r | |
309 | \r | |
310 | //\r | |
311 | // Install the pciio protocol, device path protocol\r | |
312 | //\r | |
313 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
314 | &PciIoDevice->Handle,\r | |
315 | &gEfiDevicePathProtocolGuid,\r | |
316 | PciIoDevice->DevicePath,\r | |
317 | &gEfiPciIoProtocolGuid,\r | |
318 | &PciIoDevice->PciIo,\r | |
319 | NULL\r | |
320 | );\r | |
321 | if (EFI_ERROR (Status)) {\r | |
322 | return Status;\r | |
323 | }\r | |
324 | \r | |
325 | //\r | |
326 | // Detect if PCI Express Device\r | |
327 | //\r | |
328 | PciExpressCapRegOffset = 0;\r | |
329 | Status = LocateCapabilityRegBlock (\r | |
330 | PciIoDevice,\r | |
331 | EFI_PCI_CAPABILITY_ID_PCIEXP,\r | |
332 | &PciExpressCapRegOffset,\r | |
333 | NULL\r | |
334 | );\r | |
335 | if (!EFI_ERROR (Status)) {\r | |
336 | PciIoDevice->IsPciExp = TRUE;\r | |
337 | }\r | |
338 | \r | |
339 | //\r | |
340 | // Force Interrupt line to "Unknown" or "No Connection"\r | |
341 | //\r | |
342 | PciIo = &(PciIoDevice->PciIo);\r | |
343 | Data8 = PCI_INT_LINE_UNKNOWN;\r | |
344 | PciIoWrite (PciIo, EfiPciIoWidthUint8, 0x3C, 1, &Data8);\r | |
345 | \r | |
346 | //\r | |
347 | // Process Platform OpRom\r | |
348 | //\r | |
349 | if (gPciPlatformProtocol != NULL && !PciIoDevice->AllOpRomProcessed) {\r | |
350 | PciIoDevice->AllOpRomProcessed = TRUE;\r | |
351 | \r | |
352 | Status = gPciPlatformProtocol->GetPciRom (\r | |
353 | gPciPlatformProtocol,\r | |
354 | PciIoDevice->Handle,\r | |
355 | &PlatformOpRomBuffer,\r | |
356 | &PlatformOpRomSize\r | |
357 | );\r | |
358 | \r | |
359 | if (!EFI_ERROR (Status)) {\r | |
360 | \r | |
361 | //\r | |
362 | // Have Platform OpRom\r | |
363 | //\r | |
364 | PciIoDevice->RomSize = PlatformOpRomSize;\r | |
365 | PciIoDevice->PciIo.RomSize = PlatformOpRomSize;\r | |
366 | PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;\r | |
367 | \r | |
368 | //\r | |
369 | // Process Image\r | |
370 | //\r | |
371 | ProcessOpRomImage (PciIoDevice);\r | |
372 | }\r | |
373 | }\r | |
374 | \r | |
375 | if (PciIoDevice->BusOverride) {\r | |
376 | //\r | |
377 | // Install BusSpecificDriverOverride Protocol\r | |
378 | //\r | |
379 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
380 | &PciIoDevice->Handle,\r | |
381 | &gEfiBusSpecificDriverOverrideProtocolGuid,\r | |
382 | &PciIoDevice->PciDriverOverride,\r | |
383 | NULL\r | |
384 | );\r | |
385 | if (EFI_ERROR (Status)) {\r | |
386 | gBS->UninstallMultipleProtocolInterfaces (\r | |
387 | &PciIoDevice->Handle,\r | |
388 | &gEfiDevicePathProtocolGuid,\r | |
389 | PciIoDevice->DevicePath,\r | |
390 | &gEfiPciIoProtocolGuid,\r | |
391 | &PciIoDevice->PciIo,\r | |
392 | NULL\r | |
393 | );\r | |
394 | \r | |
395 | return Status;\r | |
396 | }\r | |
397 | }\r | |
398 | \r | |
399 | Status = gBS->OpenProtocol (\r | |
400 | Controller,\r | |
401 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
402 | (VOID **) &(PciIoDevice->PciRootBridgeIo),\r | |
403 | gPciBusDriverBinding.DriverBindingHandle,\r | |
404 | PciIoDevice->Handle,\r | |
405 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
406 | );\r | |
407 | if (EFI_ERROR (Status)) {\r | |
408 | return Status;\r | |
409 | }\r | |
410 | \r | |
411 | //\r | |
412 | // Install Pccard Hotplug GUID for Pccard device so that\r | |
413 | // to notify CardBus driver to stop the device when de-register happens\r | |
414 | //\r | |
415 | InstallPciHotplugGuid (PciIoDevice);\r | |
416 | \r | |
417 | if (Handle != NULL) {\r | |
418 | *Handle = PciIoDevice->Handle;\r | |
419 | }\r | |
420 | \r | |
421 | //\r | |
422 | // Indicate the pci device is registered\r | |
423 | //\r | |
424 | PciIoDevice->Registered = TRUE;\r | |
425 | \r | |
426 | return EFI_SUCCESS;\r | |
427 | }\r | |
428 | \r | |
429 | EFI_STATUS\r | |
430 | RemoveAllPciDeviceOnBridge (\r | |
431 | EFI_HANDLE RootBridgeHandle,\r | |
432 | PCI_IO_DEVICE *Bridge\r | |
433 | )\r | |
434 | /*++\r | |
435 | \r | |
436 | Routine Description:\r | |
437 | \r | |
438 | This function is used to remove the whole PCI devices from the bridge.\r | |
439 | \r | |
440 | Arguments:\r | |
441 | \r | |
442 | RootBridgeHandle - An efi handle.\r | |
443 | Bridge - A pointer to the PCI_IO_DEVICE.\r | |
444 | \r | |
445 | Returns:\r | |
446 | \r | |
447 | None\r | |
448 | \r | |
449 | --*/\r | |
450 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
451 | {\r | |
452 | \r | |
453 | LIST_ENTRY *CurrentLink;\r | |
454 | PCI_IO_DEVICE *Temp;\r | |
455 | \r | |
456 | while (!IsListEmpty (&Bridge->ChildList)) {\r | |
457 | \r | |
458 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
459 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
460 | \r | |
461 | //\r | |
462 | // Check if the current node has been deregistered before\r | |
463 | // If it is not, then deregister it\r | |
464 | //\r | |
465 | if (Temp->Registered) {\r | |
466 | DeRegisterPciDevice (RootBridgeHandle, Temp->Handle);\r | |
467 | }\r | |
468 | \r | |
469 | //\r | |
470 | // Remove this node from the linked list\r | |
471 | //\r | |
472 | RemoveEntryList (CurrentLink);\r | |
473 | \r | |
474 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
475 | RemoveAllPciDeviceOnBridge (RootBridgeHandle, Temp);\r | |
476 | }\r | |
477 | \r | |
478 | FreePciDevice (Temp);\r | |
479 | }\r | |
480 | \r | |
481 | return EFI_SUCCESS;\r | |
482 | }\r | |
483 | \r | |
484 | EFI_STATUS\r | |
485 | DeRegisterPciDevice (\r | |
486 | IN EFI_HANDLE Controller,\r | |
487 | IN EFI_HANDLE Handle\r | |
488 | )\r | |
489 | /*++\r | |
490 | \r | |
491 | Routine Description:\r | |
492 | \r | |
493 | This function is used to de-register the PCI device from the EFI,\r | |
494 | That includes un-installing PciIo protocol from the specified PCI\r | |
495 | device handle.\r | |
496 | \r | |
497 | Arguments:\r | |
498 | \r | |
499 | Controller - An efi handle.\r | |
500 | Handle - An efi handle.\r | |
501 | \r | |
502 | Returns:\r | |
503 | \r | |
504 | None\r | |
505 | \r | |
506 | --*/\r | |
507 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
508 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
509 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
510 | {\r | |
511 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
512 | EFI_STATUS Status;\r | |
513 | PCI_IO_DEVICE *PciIoDevice;\r | |
514 | PCI_IO_DEVICE *Node;\r | |
515 | LIST_ENTRY *CurrentLink;\r | |
516 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
517 | \r | |
518 | Status = gBS->OpenProtocol (\r | |
519 | Handle,\r | |
520 | &gEfiPciIoProtocolGuid,\r | |
521 | (VOID **) &PciIo,\r | |
522 | gPciBusDriverBinding.DriverBindingHandle,\r | |
523 | Controller,\r | |
524 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
525 | );\r | |
526 | if (!EFI_ERROR (Status)) {\r | |
527 | PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (PciIo);\r | |
528 | \r | |
529 | //\r | |
530 | // If it is already de-registered\r | |
531 | //\r | |
532 | if (!PciIoDevice->Registered) {\r | |
533 | return EFI_SUCCESS;\r | |
534 | }\r | |
535 | \r | |
536 | //\r | |
537 | // If it is PPB, first de-register its children\r | |
538 | //\r | |
539 | \r | |
540 | if (!IsListEmpty (&PciIoDevice->ChildList)) {\r | |
541 | \r | |
542 | CurrentLink = PciIoDevice->ChildList.ForwardLink;\r | |
543 | \r | |
544 | while (CurrentLink && CurrentLink != &PciIoDevice->ChildList) {\r | |
545 | Node = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
546 | Status = DeRegisterPciDevice (Controller, Node->Handle);\r | |
547 | \r | |
548 | if (EFI_ERROR (Status)) {\r | |
549 | return Status;\r | |
550 | }\r | |
551 | \r | |
552 | CurrentLink = CurrentLink->ForwardLink;\r | |
553 | }\r | |
554 | }\r | |
555 | //\r | |
556 | // Uninstall Pccard Hotplug GUID for Pccard device\r | |
557 | //\r | |
558 | UninstallPciHotplugGuid (PciIoDevice);\r | |
559 | \r | |
560 | //\r | |
561 | // Close the child handle\r | |
562 | //\r | |
563 | Status = gBS->CloseProtocol (\r | |
564 | Controller,\r | |
565 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
566 | gPciBusDriverBinding.DriverBindingHandle,\r | |
567 | Handle\r | |
568 | );\r | |
569 | \r | |
570 | //\r | |
571 | // Un-install the device path protocol and pci io protocol\r | |
572 | //\r | |
573 | if (PciIoDevice->BusOverride) {\r | |
574 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
575 | Handle,\r | |
576 | &gEfiDevicePathProtocolGuid,\r | |
577 | PciIoDevice->DevicePath,\r | |
578 | &gEfiPciIoProtocolGuid,\r | |
579 | &PciIoDevice->PciIo,\r | |
580 | &gEfiBusSpecificDriverOverrideProtocolGuid,\r | |
581 | &PciIoDevice->PciDriverOverride,\r | |
582 | NULL\r | |
583 | );\r | |
584 | } else {\r | |
585 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
586 | Handle,\r | |
587 | &gEfiDevicePathProtocolGuid,\r | |
588 | PciIoDevice->DevicePath,\r | |
589 | &gEfiPciIoProtocolGuid,\r | |
590 | &PciIoDevice->PciIo,\r | |
591 | NULL\r | |
592 | );\r | |
593 | }\r | |
594 | \r | |
595 | if (EFI_ERROR (Status)) {\r | |
596 | gBS->OpenProtocol (\r | |
597 | Controller,\r | |
598 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
599 | (VOID **) &PciRootBridgeIo,\r | |
600 | gPciBusDriverBinding.DriverBindingHandle,\r | |
601 | Handle,\r | |
602 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
603 | );\r | |
604 | return Status;\r | |
605 | }\r | |
606 | \r | |
607 | //\r | |
608 | // The Device Driver should disable this device after disconnect\r | |
609 | // so the Pci Bus driver will not touch this device any more.\r | |
610 | // Restore the register field to the original value\r | |
611 | //\r | |
612 | PciIoDevice->Registered = FALSE;\r | |
613 | PciIoDevice->Handle = NULL;\r | |
614 | } else {\r | |
615 | \r | |
616 | //\r | |
617 | // Handle may be closed before\r | |
618 | //\r | |
619 | return EFI_SUCCESS;\r | |
620 | }\r | |
621 | \r | |
622 | return EFI_SUCCESS;\r | |
623 | }\r | |
624 | \r | |
625 | EFI_STATUS\r | |
626 | StartPciDevicesOnBridge (\r | |
627 | IN EFI_HANDLE Controller,\r | |
628 | IN PCI_IO_DEVICE *RootBridge,\r | |
629 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,\r | |
630 | IN OUT UINT8 *NumberOfChildren,\r | |
631 | IN OUT EFI_HANDLE *ChildHandleBuffer\r | |
632 | )\r | |
633 | /*++\r | |
634 | \r | |
635 | Routine Description:\r | |
636 | \r | |
637 | Start to manage the PCI device on specified the root bridge or PCI-PCI Bridge\r | |
638 | \r | |
639 | Arguments:\r | |
640 | \r | |
641 | Controller - An efi handle.\r | |
642 | RootBridge - A pointer to the PCI_IO_DEVICE.\r | |
643 | RemainingDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCOL.\r | |
644 | NumberOfChildren - Children number.\r | |
645 | ChildHandleBuffer - A pointer to the child handle buffer.\r | |
646 | \r | |
647 | Returns:\r | |
648 | \r | |
649 | None\r | |
650 | \r | |
651 | --*/\r | |
652 | // TODO: EFI_NOT_READY - add return value to function comment\r | |
653 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
654 | // TODO: EFI_UNSUPPORTED - add return value to function comment\r | |
655 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
656 | {\r | |
657 | PCI_IO_DEVICE *Temp;\r | |
658 | PCI_IO_DEVICE *PciIoDevice;\r | |
659 | EFI_DEV_PATH_PTR Node;\r | |
660 | EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;\r | |
661 | EFI_STATUS Status;\r | |
662 | LIST_ENTRY *CurrentLink;\r | |
663 | UINT64 Supports;\r | |
664 | \r | |
665 | CurrentLink = RootBridge->ChildList.ForwardLink;\r | |
666 | \r | |
667 | while (CurrentLink && CurrentLink != &RootBridge->ChildList) {\r | |
668 | \r | |
669 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
670 | if (RemainingDevicePath != NULL) {\r | |
671 | \r | |
672 | Node.DevPath = RemainingDevicePath;\r | |
673 | \r | |
674 | if (Node.Pci->Device != Temp->DeviceNumber ||\r | |
675 | Node.Pci->Function != Temp->FunctionNumber) {\r | |
676 | CurrentLink = CurrentLink->ForwardLink;\r | |
677 | continue;\r | |
678 | }\r | |
679 | \r | |
680 | //\r | |
681 | // Check if the device has been assigned with required resource\r | |
682 | //\r | |
683 | if (!Temp->Allocated) {\r | |
684 | return EFI_NOT_READY;\r | |
685 | }\r | |
686 | \r | |
687 | //\r | |
688 | // Check if the current node has been registered before\r | |
689 | // If it is not, register it\r | |
690 | //\r | |
691 | if (!Temp->Registered) {\r | |
692 | PciIoDevice = Temp;\r | |
693 | \r | |
694 | Status = RegisterPciDevice (\r | |
695 | Controller,\r | |
696 | PciIoDevice,\r | |
697 | NULL\r | |
698 | );\r | |
699 | \r | |
700 | }\r | |
701 | \r | |
702 | if (NumberOfChildren != NULL && ChildHandleBuffer != NULL && Temp->Registered) {\r | |
703 | ChildHandleBuffer[*NumberOfChildren] = Temp->Handle;\r | |
704 | (*NumberOfChildren)++;\r | |
705 | }\r | |
706 | \r | |
707 | //\r | |
708 | // Get the next device path\r | |
709 | //\r | |
710 | CurrentDevicePath = EfiNextDevicePathNode (RemainingDevicePath);\r | |
711 | if (EfiIsDevicePathEnd (CurrentDevicePath)) {\r | |
712 | return EFI_SUCCESS;\r | |
713 | }\r | |
714 | \r | |
715 | //\r | |
716 | // If it is a PPB\r | |
717 | //\r | |
718 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
719 | Status = StartPciDevicesOnBridge (\r | |
720 | Controller,\r | |
721 | Temp,\r | |
722 | CurrentDevicePath,\r | |
723 | NumberOfChildren,\r | |
724 | ChildHandleBuffer\r | |
725 | );\r | |
726 | \r | |
727 | Temp->PciIo.Attributes (\r | |
728 | &(Temp->PciIo),\r | |
729 | EfiPciIoAttributeOperationSupported,\r | |
730 | 0,\r | |
731 | &Supports\r | |
732 | );\r | |
733 | Supports &= EFI_PCI_DEVICE_ENABLE;\r | |
734 | Temp->PciIo.Attributes (\r | |
735 | &(Temp->PciIo),\r | |
736 | EfiPciIoAttributeOperationEnable,\r | |
737 | Supports,\r | |
738 | NULL\r | |
739 | );\r | |
740 | \r | |
741 | return Status;\r | |
742 | } else {\r | |
743 | \r | |
744 | //\r | |
745 | // Currently, the PCI bus driver only support PCI-PCI bridge\r | |
746 | //\r | |
747 | return EFI_UNSUPPORTED;\r | |
748 | }\r | |
749 | \r | |
750 | } else {\r | |
751 | \r | |
752 | //\r | |
753 | // If remaining device path is NULL,\r | |
754 | // try to enable all the pci devices under this bridge\r | |
755 | //\r | |
756 | \r | |
757 | if (!Temp->Registered && Temp->Allocated) {\r | |
758 | \r | |
759 | PciIoDevice = Temp;\r | |
760 | \r | |
761 | Status = RegisterPciDevice (\r | |
762 | Controller,\r | |
763 | PciIoDevice,\r | |
764 | NULL\r | |
765 | );\r | |
766 | \r | |
767 | }\r | |
768 | \r | |
769 | if (NumberOfChildren != NULL && ChildHandleBuffer != NULL && Temp->Registered) {\r | |
770 | ChildHandleBuffer[*NumberOfChildren] = Temp->Handle;\r | |
771 | (*NumberOfChildren)++;\r | |
772 | }\r | |
773 | \r | |
774 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
775 | Status = StartPciDevicesOnBridge (\r | |
776 | Controller,\r | |
777 | Temp,\r | |
778 | RemainingDevicePath,\r | |
779 | NumberOfChildren,\r | |
780 | ChildHandleBuffer\r | |
781 | );\r | |
782 | \r | |
783 | Temp->PciIo.Attributes (\r | |
784 | &(Temp->PciIo),\r | |
785 | EfiPciIoAttributeOperationSupported,\r | |
786 | 0,\r | |
787 | &Supports\r | |
788 | );\r | |
789 | Supports &= EFI_PCI_DEVICE_ENABLE;\r | |
790 | Temp->PciIo.Attributes (\r | |
791 | &(Temp->PciIo),\r | |
792 | EfiPciIoAttributeOperationEnable,\r | |
793 | Supports,\r | |
794 | NULL\r | |
795 | );\r | |
796 | \r | |
797 | }\r | |
798 | \r | |
799 | CurrentLink = CurrentLink->ForwardLink;\r | |
800 | continue;\r | |
801 | }\r | |
802 | }\r | |
803 | \r | |
804 | return EFI_NOT_FOUND;\r | |
805 | }\r | |
806 | \r | |
807 | EFI_STATUS\r | |
808 | StartPciDevices (\r | |
809 | IN EFI_HANDLE Controller,\r | |
810 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
811 | )\r | |
812 | /*++\r | |
813 | \r | |
814 | Routine Description:\r | |
815 | \r | |
816 | Start to manage the PCI device according to RemainingDevicePath\r | |
817 | If RemainingDevicePath == NULL, the PCI bus driver will start\r | |
818 | to manage all the PCI devices it found previously\r | |
819 | \r | |
820 | Arguments:\r | |
821 | Controller - An efi handle.\r | |
822 | RemainingDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCOL.\r | |
823 | \r | |
824 | Returns:\r | |
825 | \r | |
826 | None\r | |
827 | \r | |
828 | --*/\r | |
829 | // TODO: EFI_UNSUPPORTED - add return value to function comment\r | |
830 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
831 | {\r | |
832 | EFI_DEV_PATH_PTR Node;\r | |
833 | PCI_IO_DEVICE *RootBridge;\r | |
834 | LIST_ENTRY *CurrentLink;\r | |
835 | \r | |
836 | if (RemainingDevicePath != NULL) {\r | |
837 | \r | |
838 | //\r | |
839 | // Check if the RemainingDevicePath is valid\r | |
840 | //\r | |
841 | Node.DevPath = RemainingDevicePath;\r | |
842 | if ((Node.DevPath->Type != HARDWARE_DEVICE_PATH) ||\r | |
843 | ((Node.DevPath->SubType != HW_PCI_DP) &&\r | |
844 | (DevicePathNodeLength (Node.DevPath) != sizeof (PCI_DEVICE_PATH)))\r | |
845 | ) {\r | |
846 | return EFI_UNSUPPORTED;\r | |
847 | }\r | |
848 | }\r | |
849 | \r | |
850 | CurrentLink = gPciDevicePool.ForwardLink;\r | |
851 | \r | |
852 | while (CurrentLink && CurrentLink != &gPciDevicePool) {\r | |
853 | \r | |
854 | RootBridge = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
855 | //\r | |
856 | // Locate the right root bridge to start\r | |
857 | //\r | |
858 | if (RootBridge->Handle == Controller) {\r | |
859 | StartPciDevicesOnBridge (\r | |
860 | Controller,\r | |
861 | RootBridge,\r | |
862 | RemainingDevicePath,\r | |
863 | NULL,\r | |
864 | NULL\r | |
865 | );\r | |
866 | }\r | |
867 | \r | |
868 | CurrentLink = CurrentLink->ForwardLink;\r | |
869 | }\r | |
870 | \r | |
871 | return EFI_SUCCESS;\r | |
872 | }\r | |
873 | \r | |
874 | PCI_IO_DEVICE *\r | |
875 | CreateRootBridge (\r | |
876 | IN EFI_HANDLE RootBridgeHandle\r | |
877 | )\r | |
878 | /*++\r | |
879 | \r | |
880 | Routine Description:\r | |
881 | \r | |
882 | \r | |
883 | Arguments:\r | |
884 | RootBridgeHandle - An efi handle.\r | |
885 | \r | |
886 | Returns:\r | |
887 | \r | |
888 | None\r | |
889 | \r | |
890 | --*/\r | |
891 | {\r | |
892 | \r | |
893 | EFI_STATUS Status;\r | |
894 | PCI_IO_DEVICE *Dev;\r | |
895 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
896 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
897 | \r | |
898 | Dev = NULL;\r | |
899 | Status = gBS->AllocatePool (\r | |
900 | EfiBootServicesData,\r | |
901 | sizeof (PCI_IO_DEVICE),\r | |
902 | (VOID **) &Dev\r | |
903 | );\r | |
904 | \r | |
905 | if (EFI_ERROR (Status)) {\r | |
906 | return NULL;\r | |
907 | }\r | |
908 | \r | |
909 | ZeroMem (Dev, sizeof (PCI_IO_DEVICE));\r | |
910 | Dev->Signature = PCI_IO_DEVICE_SIGNATURE;\r | |
911 | Dev->Handle = RootBridgeHandle;\r | |
912 | InitializeListHead (&Dev->ChildList);\r | |
913 | \r | |
914 | Status = gBS->OpenProtocol (\r | |
915 | RootBridgeHandle,\r | |
916 | &gEfiDevicePathProtocolGuid,\r | |
917 | (VOID **) &ParentDevicePath,\r | |
918 | gPciBusDriverBinding.DriverBindingHandle,\r | |
919 | RootBridgeHandle,\r | |
920 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
921 | );\r | |
922 | \r | |
923 | if (EFI_ERROR (Status)) {\r | |
924 | gBS->FreePool (Dev);\r | |
925 | return NULL;\r | |
926 | }\r | |
927 | \r | |
928 | //\r | |
929 | // Record the root bridge parent device path\r | |
930 | //\r | |
931 | Dev->DevicePath = DuplicateDevicePath (ParentDevicePath);\r | |
932 | \r | |
933 | //\r | |
934 | // Get the pci root bridge io protocol\r | |
935 | //\r | |
936 | Status = gBS->OpenProtocol (\r | |
937 | RootBridgeHandle,\r | |
938 | &gEfiPciRootBridgeIoProtocolGuid,\r | |
939 | (VOID **) &PciRootBridgeIo,\r | |
940 | gPciBusDriverBinding.DriverBindingHandle,\r | |
941 | RootBridgeHandle,\r | |
942 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
943 | );\r | |
944 | \r | |
945 | if (EFI_ERROR (Status)) {\r | |
946 | FreePciDevice (Dev);\r | |
947 | return NULL;\r | |
948 | }\r | |
949 | \r | |
950 | Dev->PciRootBridgeIo = PciRootBridgeIo;\r | |
951 | \r | |
952 | //\r | |
953 | // Initialize the PCI I/O instance structure\r | |
954 | //\r | |
955 | Status = InitializePciIoInstance (Dev);\r | |
956 | Status = InitializePciDriverOverrideInstance (Dev);\r | |
957 | \r | |
958 | //\r | |
959 | // Initialize reserved resource list and\r | |
960 | // option rom driver list\r | |
961 | //\r | |
962 | InitializeListHead (&Dev->ReservedResourceList);\r | |
963 | InitializeListHead (&Dev->OptionRomDriverList);\r | |
964 | \r | |
965 | return Dev;\r | |
966 | }\r | |
967 | \r | |
968 | PCI_IO_DEVICE *\r | |
969 | GetRootBridgeByHandle (\r | |
970 | EFI_HANDLE RootBridgeHandle\r | |
971 | )\r | |
972 | /*++\r | |
973 | \r | |
974 | Routine Description:\r | |
975 | \r | |
976 | \r | |
977 | Arguments:\r | |
978 | \r | |
979 | RootBridgeHandle - An efi handle.\r | |
980 | \r | |
981 | Returns:\r | |
982 | \r | |
983 | None\r | |
984 | \r | |
985 | --*/\r | |
986 | {\r | |
987 | PCI_IO_DEVICE *RootBridgeDev;\r | |
988 | LIST_ENTRY *CurrentLink;\r | |
989 | \r | |
990 | CurrentLink = gPciDevicePool.ForwardLink;\r | |
991 | \r | |
992 | while (CurrentLink && CurrentLink != &gPciDevicePool) {\r | |
993 | \r | |
994 | RootBridgeDev = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
995 | if (RootBridgeDev->Handle == RootBridgeHandle) {\r | |
996 | return RootBridgeDev;\r | |
997 | }\r | |
998 | \r | |
999 | CurrentLink = CurrentLink->ForwardLink;\r | |
1000 | }\r | |
1001 | \r | |
1002 | return NULL;\r | |
1003 | }\r | |
1004 | \r | |
1005 | BOOLEAN\r | |
1006 | RootBridgeExisted (\r | |
1007 | IN EFI_HANDLE RootBridgeHandle\r | |
1008 | )\r | |
1009 | /*++\r | |
1010 | \r | |
1011 | Routine Description:\r | |
1012 | \r | |
1013 | This function searches if RootBridgeHandle has already existed\r | |
1014 | in current device pool.\r | |
1015 | \r | |
1016 | If so, it means the given root bridge has been already enumerated.\r | |
1017 | \r | |
1018 | Arguments:\r | |
1019 | \r | |
1020 | RootBridgeHandle - An efi handle.\r | |
1021 | \r | |
1022 | Returns:\r | |
1023 | \r | |
1024 | None\r | |
1025 | \r | |
1026 | --*/\r | |
1027 | {\r | |
1028 | PCI_IO_DEVICE *Bridge;\r | |
1029 | \r | |
1030 | Bridge = GetRootBridgeByHandle (RootBridgeHandle);\r | |
1031 | \r | |
1032 | if (Bridge != NULL) {\r | |
1033 | return TRUE;\r | |
1034 | }\r | |
1035 | \r | |
1036 | return FALSE;\r | |
1037 | }\r | |
1038 | \r | |
1039 | BOOLEAN\r | |
1040 | PciDeviceExisted (\r | |
1041 | IN PCI_IO_DEVICE *Bridge,\r | |
1042 | IN PCI_IO_DEVICE *PciIoDevice\r | |
1043 | )\r | |
1044 | /*++\r | |
1045 | \r | |
1046 | Routine Description:\r | |
1047 | \r | |
1048 | Arguments:\r | |
1049 | \r | |
1050 | Bridge - A pointer to the PCI_IO_DEVICE.\r | |
1051 | PciIoDevice - A pointer to the PCI_IO_DEVICE.\r | |
1052 | \r | |
1053 | Returns:\r | |
1054 | \r | |
1055 | None\r | |
1056 | \r | |
1057 | --*/\r | |
1058 | {\r | |
1059 | \r | |
1060 | PCI_IO_DEVICE *Temp;\r | |
1061 | LIST_ENTRY *CurrentLink;\r | |
1062 | \r | |
1063 | CurrentLink = Bridge->ChildList.ForwardLink;\r | |
1064 | \r | |
1065 | while (CurrentLink && CurrentLink != &Bridge->ChildList) {\r | |
1066 | \r | |
1067 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
1068 | \r | |
1069 | if (Temp == PciIoDevice) {\r | |
1070 | return TRUE;\r | |
1071 | }\r | |
1072 | \r | |
1073 | if (!IsListEmpty (&Temp->ChildList)) {\r | |
1074 | if (PciDeviceExisted (Temp, PciIoDevice)) {\r | |
1075 | return TRUE;\r | |
1076 | }\r | |
1077 | }\r | |
1078 | \r | |
1079 | CurrentLink = CurrentLink->ForwardLink;\r | |
1080 | }\r | |
1081 | \r | |
1082 | return FALSE;\r | |
1083 | }\r | |
1084 | \r | |
1085 | PCI_IO_DEVICE *\r | |
1086 | ActiveVGADeviceOnTheSameSegment (\r | |
1087 | IN PCI_IO_DEVICE *VgaDevice\r | |
1088 | )\r | |
1089 | /*++\r | |
1090 | \r | |
1091 | Routine Description:\r | |
1092 | \r | |
1093 | Arguments:\r | |
1094 | \r | |
1095 | VgaDevice - A pointer to the PCI_IO_DEVICE.\r | |
1096 | \r | |
1097 | Returns:\r | |
1098 | \r | |
1099 | None\r | |
1100 | \r | |
1101 | --*/\r | |
1102 | {\r | |
1103 | LIST_ENTRY *CurrentLink;\r | |
1104 | PCI_IO_DEVICE *Temp;\r | |
1105 | \r | |
1106 | CurrentLink = gPciDevicePool.ForwardLink;\r | |
1107 | \r | |
1108 | while (CurrentLink && CurrentLink != &gPciDevicePool) {\r | |
1109 | \r | |
1110 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
1111 | \r | |
1112 | if (Temp->PciRootBridgeIo->SegmentNumber == VgaDevice->PciRootBridgeIo->SegmentNumber) {\r | |
1113 | \r | |
1114 | Temp = ActiveVGADeviceOnTheRootBridge (Temp);\r | |
1115 | \r | |
1116 | if (Temp != NULL) {\r | |
1117 | return Temp;\r | |
1118 | }\r | |
1119 | }\r | |
1120 | \r | |
1121 | CurrentLink = CurrentLink->ForwardLink;\r | |
1122 | }\r | |
1123 | \r | |
1124 | return NULL;\r | |
1125 | }\r | |
1126 | \r | |
1127 | PCI_IO_DEVICE *\r | |
1128 | ActiveVGADeviceOnTheRootBridge (\r | |
1129 | IN PCI_IO_DEVICE *RootBridge\r | |
1130 | )\r | |
1131 | /*++\r | |
1132 | \r | |
1133 | Routine Description:\r | |
1134 | \r | |
1135 | Arguments:\r | |
1136 | \r | |
1137 | RootBridge - A pointer to the PCI_IO_DEVICE.\r | |
1138 | \r | |
1139 | Returns:\r | |
1140 | \r | |
1141 | None\r | |
1142 | \r | |
1143 | --*/\r | |
1144 | {\r | |
1145 | LIST_ENTRY *CurrentLink;\r | |
1146 | PCI_IO_DEVICE *Temp;\r | |
1147 | \r | |
1148 | CurrentLink = RootBridge->ChildList.ForwardLink;\r | |
1149 | \r | |
1150 | while (CurrentLink && CurrentLink != &RootBridge->ChildList) {\r | |
1151 | \r | |
1152 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
1153 | \r | |
1154 | if (IS_PCI_VGA(&Temp->Pci) &&\r | |
1155 | (Temp->Attributes &\r | |
1156 | (EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY |\r | |
1157 | EFI_PCI_IO_ATTRIBUTE_VGA_IO |\r | |
1158 | EFI_PCI_IO_ATTRIBUTE_VGA_IO_16))) {\r | |
1159 | return Temp;\r | |
1160 | }\r | |
1161 | \r | |
1162 | if (IS_PCI_BRIDGE (&Temp->Pci)) {\r | |
1163 | \r | |
1164 | Temp = ActiveVGADeviceOnTheRootBridge (Temp);\r | |
1165 | \r | |
1166 | if (Temp != NULL) {\r | |
1167 | return Temp;\r | |
1168 | }\r | |
1169 | }\r | |
1170 | \r | |
1171 | CurrentLink = CurrentLink->ForwardLink;\r | |
1172 | }\r | |
1173 | \r | |
1174 | return NULL;\r | |
1175 | }\r | |
1176 | \r | |
1177 | EFI_STATUS\r | |
1178 | GetHpcPciAddress (\r | |
1179 | IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,\r | |
1180 | IN EFI_DEVICE_PATH_PROTOCOL *HpcDevicePath,\r | |
1181 | OUT UINT64 *PciAddress\r | |
1182 | )\r | |
1183 | /*++\r | |
1184 | \r | |
1185 | Routine Description:\r | |
1186 | \r | |
1187 | Arguments:\r | |
1188 | \r | |
1189 | PciRootBridgeIo - A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.\r | |
1190 | HpcDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCL.\r | |
1191 | PciAddress - A pointer to the pci address.\r | |
1192 | \r | |
1193 | Returns:\r | |
1194 | \r | |
1195 | None\r | |
1196 | \r | |
1197 | --*/\r | |
1198 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
1199 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
1200 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
1201 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
1202 | {\r | |
1203 | EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;\r | |
1204 | EFI_DEV_PATH_PTR Node;\r | |
1205 | LIST_ENTRY *CurrentLink;\r | |
1206 | PCI_IO_DEVICE *RootBridge;\r | |
1207 | EFI_STATUS Status;\r | |
1208 | \r | |
1209 | CurrentDevicePath = HpcDevicePath;\r | |
1210 | \r | |
1211 | //\r | |
1212 | // Get the remaining device path for this PCI device, if it is a PCI device\r | |
1213 | //\r | |
1214 | while (!EfiIsDevicePathEnd (CurrentDevicePath)) {\r | |
1215 | \r | |
1216 | Node.DevPath = CurrentDevicePath;\r | |
1217 | \r | |
1218 | //\r | |
1219 | // Check if it is PCI device Path?\r | |
1220 | //\r | |
1221 | if ((Node.DevPath->Type != HARDWARE_DEVICE_PATH) ||\r | |
1222 | ((Node.DevPath->SubType != HW_PCI_DP) &&\r | |
1223 | (DevicePathNodeLength (Node.DevPath) != sizeof (PCI_DEVICE_PATH)))) {\r | |
1224 | CurrentDevicePath = EfiNextDevicePathNode (CurrentDevicePath);\r | |
1225 | continue;\r | |
1226 | }\r | |
1227 | \r | |
1228 | break;\r | |
1229 | }\r | |
1230 | \r | |
1231 | //\r | |
1232 | // Check if it is not PCI device path\r | |
1233 | //\r | |
1234 | if (EfiIsDevicePathEnd (CurrentDevicePath)) {\r | |
1235 | return EFI_NOT_FOUND;\r | |
1236 | }\r | |
1237 | \r | |
1238 | CurrentLink = gPciDevicePool.ForwardLink;\r | |
1239 | \r | |
1240 | while (CurrentLink && CurrentLink != &gPciDevicePool) {\r | |
1241 | \r | |
1242 | RootBridge = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
1243 | //\r | |
1244 | // Locate the right root bridge to start\r | |
1245 | //\r | |
1246 | if (RootBridge->PciRootBridgeIo == PciRootBridgeIo) {\r | |
1247 | Status = GetHpcPciAddressFromRootBridge (\r | |
1248 | RootBridge,\r | |
1249 | CurrentDevicePath,\r | |
1250 | PciAddress\r | |
1251 | );\r | |
1252 | if (EFI_ERROR (Status)) {\r | |
1253 | return EFI_NOT_FOUND;\r | |
1254 | }\r | |
1255 | \r | |
1256 | return EFI_SUCCESS;\r | |
1257 | \r | |
1258 | }\r | |
1259 | \r | |
1260 | CurrentLink = CurrentLink->ForwardLink;\r | |
1261 | }\r | |
1262 | \r | |
1263 | return EFI_NOT_FOUND;\r | |
1264 | }\r | |
1265 | \r | |
1266 | EFI_STATUS\r | |
1267 | GetHpcPciAddressFromRootBridge (\r | |
1268 | IN PCI_IO_DEVICE *RootBridge,\r | |
1269 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,\r | |
1270 | OUT UINT64 *PciAddress\r | |
1271 | )\r | |
1272 | /*++\r | |
1273 | \r | |
1274 | Routine Description:\r | |
1275 | \r | |
1276 | Arguments:\r | |
1277 | \r | |
1278 | PciRootBridgeIo - A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.\r | |
1279 | HpcDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCL.\r | |
1280 | PciAddress - A pointer to the pci address.\r | |
1281 | \r | |
1282 | Returns:\r | |
1283 | \r | |
1284 | None\r | |
1285 | \r | |
1286 | --*/\r | |
1287 | // TODO: RootBridge - add argument and description to function comment\r | |
1288 | // TODO: RemainingDevicePath - add argument and description to function comment\r | |
1289 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
1290 | // TODO: EFI_NOT_FOUND - add return value to function comment\r | |
1291 | // TODO: EFI_SUCCESS - add return value to function comment\r | |
1292 | {\r | |
1293 | EFI_DEV_PATH_PTR Node;\r | |
1294 | PCI_IO_DEVICE *Temp;\r | |
1295 | EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;\r | |
1296 | LIST_ENTRY *CurrentLink;\r | |
1297 | BOOLEAN MisMatch;\r | |
1298 | \r | |
1299 | MisMatch = FALSE;\r | |
1300 | \r | |
1301 | CurrentDevicePath = RemainingDevicePath;\r | |
1302 | Node.DevPath = CurrentDevicePath;\r | |
1303 | Temp = NULL;\r | |
1304 | \r | |
1305 | while (!EfiIsDevicePathEnd (CurrentDevicePath)) {\r | |
1306 | \r | |
1307 | CurrentLink = RootBridge->ChildList.ForwardLink;\r | |
1308 | Node.DevPath = CurrentDevicePath;\r | |
1309 | \r | |
1310 | while (CurrentLink && CurrentLink != &RootBridge->ChildList) {\r | |
1311 | Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r | |
1312 | \r | |
1313 | if (Node.Pci->Device == Temp->DeviceNumber &&\r | |
1314 | Node.Pci->Function == Temp->FunctionNumber) {\r | |
1315 | RootBridge = Temp;\r | |
1316 | break;\r | |
1317 | }\r | |
1318 | \r | |
1319 | CurrentLink = CurrentLink->ForwardLink;\r | |
1320 | }\r | |
1321 | \r | |
1322 | //\r | |
1323 | // Check if we find the bridge\r | |
1324 | //\r | |
1325 | if (CurrentLink == &RootBridge->ChildList) {\r | |
1326 | \r | |
1327 | MisMatch = TRUE;\r | |
1328 | break;\r | |
1329 | \r | |
1330 | }\r | |
1331 | \r | |
1332 | CurrentDevicePath = EfiNextDevicePathNode (CurrentDevicePath);\r | |
1333 | }\r | |
1334 | \r | |
1335 | if (MisMatch) {\r | |
1336 | \r | |
1337 | CurrentDevicePath = EfiNextDevicePathNode (CurrentDevicePath);\r | |
1338 | \r | |
1339 | if (EfiIsDevicePathEnd (CurrentDevicePath)) {\r | |
1340 | *PciAddress = EFI_PCI_ADDRESS (RootBridge->BusNumber, Node.Pci->Device, Node.Pci->Function, 0);\r | |
1341 | return EFI_SUCCESS;\r | |
1342 | }\r | |
1343 | \r | |
1344 | return EFI_NOT_FOUND;\r | |
1345 | }\r | |
1346 | \r | |
1347 | *PciAddress = EFI_PCI_ADDRESS (Temp->BusNumber, Temp->DeviceNumber, Temp->FunctionNumber, 0);\r | |
1348 | \r | |
1349 | return EFI_SUCCESS;\r | |
1350 | \r | |
1351 | }\r |