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Commit | Line | Data |
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f8cd287b | 1 | /**@file\r |
c3902377 | 2 | \r |
3 | Discovers all the ISA Controllers and their resources by using the ISA PnP \r | |
4 | Protocol, produces an instance of the ISA I/O Protocol for every ISA \r | |
5 | Controller found, loads and initializes all ISA Device Drivers, matches ISA\r | |
6 | Device Drivers with their respective ISA Controllers in a deterministic \r | |
7 | manner, and informs a ISA Device Driver when it is to start managing an ISA\r | |
8 | Controller. \r | |
f8cd287b | 9 | \r |
10 | Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r | |
11 | All rights reserved. This program and the accompanying materials\r | |
12 | are licensed and made available under the terms and conditions of the BSD License\r | |
13 | which accompanies this distribution. The full text of the license may be found at\r | |
14 | http://opensource.org/licenses/bsd-license.php\r | |
15 | \r | |
16 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
17 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
c3902377 | 18 | \r |
f8cd287b | 19 | **/\r |
c3902377 | 20 | \r |
c3902377 | 21 | \r |
22 | #include "InternalIsaBus.h"\r | |
23 | \r | |
24 | //\r | |
25 | // ISA Bus Driver Global Variables\r | |
26 | //\r | |
27 | EFI_DRIVER_BINDING_PROTOCOL gIsaBusControllerDriver = {\r | |
28 | IsaBusControllerDriverSupported,\r | |
29 | IsaBusControllerDriverStart,\r | |
30 | IsaBusControllerDriverStop,\r | |
31 | 0xa,\r | |
32 | NULL,\r | |
33 | NULL\r | |
34 | };\r | |
35 | \r | |
c55fa8cc | 36 | /**\r |
37 | The user Entry Point for module IsaBus. The user code starts with this function.\r | |
38 | \r | |
39 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
40 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
41 | \r | |
42 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
43 | @retval other Some error occurs when executing this entry point.\r | |
44 | \r | |
45 | **/\r | |
46 | EFI_STATUS\r | |
47 | EFIAPI\r | |
48 | InitializeIsaBus(\r | |
49 | IN EFI_HANDLE ImageHandle,\r | |
50 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
51 | )\r | |
52 | {\r | |
53 | EFI_STATUS Status;\r | |
54 | \r | |
55 | //\r | |
56 | // Install driver model protocol(s).\r | |
57 | //\r | |
58 | Status = EfiLibInstallAllDriverProtocols (\r | |
59 | ImageHandle,\r | |
60 | SystemTable,\r | |
61 | &gIsaBusControllerDriver,\r | |
62 | ImageHandle,\r | |
63 | &gIsaBusComponentName,\r | |
64 | NULL,\r | |
65 | NULL\r | |
66 | );\r | |
67 | ASSERT_EFI_ERROR (Status);\r | |
68 | \r | |
69 | \r | |
70 | return Status;\r | |
71 | }\r | |
72 | \r | |
73 | \r | |
c3902377 | 74 | EFI_STATUS\r |
75 | EFIAPI\r | |
76 | IsaBusControllerDriverSupported (\r | |
77 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
78 | IN EFI_HANDLE Controller,\r | |
79 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
80 | )\r | |
81 | /*++\r | |
82 | \r | |
83 | Routine Description:\r | |
84 | \r | |
85 | This function checks to see if a controller can be managed by the ISA Bus \r | |
86 | Driver. This is done by checking to see if the controller supports the \r | |
87 | EFI_PCI_IO_PROTOCOL protocol, and then looking at the PCI Configuration \r | |
88 | Header to see if the device is a PCI to ISA bridge. The class code of \r | |
89 | PCI to ISA bridge: Base class 06h, Sub class 01h Interface 00h \r | |
90 | \r | |
91 | Arguments:\r | |
92 | \r | |
93 | This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
94 | Controller - The handle of the device to check.\r | |
95 | RemainingDevicePath - A pointer to the remaining portion of a device path.\r | |
96 | \r | |
97 | Returns:\r | |
98 | \r | |
99 | EFI_SUCCESS - The device is supported by this driver.\r | |
100 | EFI_UNSUPPORTED - The device is not supported by this driver.\r | |
101 | \r | |
102 | --*/\r | |
103 | {\r | |
104 | EFI_STATUS Status;\r | |
105 | EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r | |
106 | \r | |
107 | //\r | |
108 | // If RemainingDevicePath is not NULL, it should verify that the first device\r | |
109 | // path node in RemainingDevicePath is an ACPI Device path node\r | |
110 | //\r | |
111 | if (RemainingDevicePath != NULL) {\r | |
112 | if (RemainingDevicePath->Type != ACPI_DEVICE_PATH) {\r | |
113 | return EFI_UNSUPPORTED;\r | |
114 | } else if (RemainingDevicePath->SubType == ACPI_DP) {\r | |
115 | if (DevicePathNodeLength (RemainingDevicePath) != sizeof (ACPI_HID_DEVICE_PATH)) {\r | |
116 | return EFI_UNSUPPORTED;\r | |
117 | }\r | |
118 | } else if (RemainingDevicePath->SubType == ACPI_EXTENDED_DP) {\r | |
119 | if (DevicePathNodeLength (RemainingDevicePath) != sizeof (ACPI_EXTENDED_HID_DEVICE_PATH)) {\r | |
120 | return EFI_UNSUPPORTED;\r | |
121 | }\r | |
122 | } else {\r | |
123 | return EFI_UNSUPPORTED;\r | |
124 | }\r | |
125 | }\r | |
126 | //\r | |
127 | // Test the existence of DEVICE_PATH protocol\r | |
128 | //\r | |
129 | Status = gBS->OpenProtocol (\r | |
130 | Controller,\r | |
131 | &gEfiDevicePathProtocolGuid,\r | |
132 | NULL,\r | |
133 | This->DriverBindingHandle,\r | |
134 | Controller,\r | |
135 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
136 | );\r | |
137 | if (EFI_ERROR (Status)) {\r | |
138 | return Status;\r | |
139 | }\r | |
140 | //\r | |
141 | // Get the Isa Acpi protocol\r | |
142 | //\r | |
143 | Status = gBS->OpenProtocol (\r | |
144 | Controller,\r | |
145 | &gEfiIsaAcpiProtocolGuid,\r | |
146 | (VOID **) &IsaAcpi,\r | |
147 | This->DriverBindingHandle,\r | |
148 | Controller,\r | |
149 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
150 | );\r | |
151 | if (Status == EFI_ALREADY_STARTED) {\r | |
152 | return EFI_SUCCESS;\r | |
153 | }\r | |
154 | \r | |
155 | if (EFI_ERROR (Status)) {\r | |
156 | return Status;\r | |
157 | }\r | |
158 | \r | |
159 | gBS->CloseProtocol (\r | |
160 | Controller,\r | |
161 | &gEfiIsaAcpiProtocolGuid,\r | |
162 | This->DriverBindingHandle,\r | |
163 | Controller\r | |
164 | );\r | |
165 | \r | |
166 | return Status;\r | |
167 | }\r | |
168 | \r | |
169 | EFI_STATUS\r | |
170 | EFIAPI\r | |
171 | IsaBusControllerDriverStart (\r | |
172 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
173 | IN EFI_HANDLE Controller,\r | |
174 | IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r | |
175 | )\r | |
176 | /*++\r | |
177 | \r | |
178 | Routine Description:\r | |
179 | \r | |
180 | This function tells the ISA Bus Driver to start managing a PCI to ISA \r | |
181 | Bridge controller. \r | |
182 | \r | |
183 | Arguments:\r | |
184 | \r | |
185 | This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
186 | Controller - A handle to the device being started. \r | |
187 | RemainingDevicePath - A pointer to the remaining portion of a device path.\r | |
188 | \r | |
189 | Returns:\r | |
190 | \r | |
191 | EFI_SUCCESS - The device was started.\r | |
192 | EFI_UNSUPPORTED - The device is not supported.\r | |
193 | EFI_DEVICE_ERROR - The device could not be started due to a device error.\r | |
194 | EFI_ALREADY_STARTED - The device has already been started.\r | |
195 | EFI_INVALID_PARAMETER - One of the parameters has an invalid value.\r | |
196 | EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r | |
197 | resources.\r | |
198 | \r | |
199 | --*/\r | |
200 | {\r | |
201 | EFI_STATUS Status;\r | |
202 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
203 | EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r | |
204 | EFI_ISA_ACPI_PROTOCOL *IsaAcpi;\r | |
205 | EFI_ISA_ACPI_DEVICE_ID *IsaDevice;\r | |
206 | EFI_ISA_ACPI_RESOURCE_LIST *ResourceList;\r | |
207 | EFI_GENERIC_MEMORY_TEST_PROTOCOL *GenMemoryTest;\r | |
208 | \r | |
209 | //\r | |
210 | // Local variables declaration for StatusCode reporting\r | |
211 | //\r | |
212 | EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA AllocFailExtendedData;\r | |
213 | EFI_DEVICE_PATH_PROTOCOL *DevicePathData;\r | |
214 | \r | |
c3902377 | 215 | //\r |
216 | // Initialize status code structure\r | |
217 | //\r | |
218 | AllocFailExtendedData.DataHeader.HeaderSize = sizeof (EFI_STATUS_CODE_DATA);\r | |
219 | AllocFailExtendedData.DataHeader.Size = sizeof (EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA) - sizeof (EFI_STATUS_CODE_DATA);\r | |
220 | CopyMem (\r | |
221 | &AllocFailExtendedData.DataHeader.Type,\r | |
222 | &gEfiStatusCodeSpecificDataGuid,\r | |
223 | sizeof (EFI_GUID)\r | |
224 | );\r | |
225 | \r | |
226 | //\r | |
227 | // Open Device Path Protocol\r | |
228 | //\r | |
229 | Status = gBS->OpenProtocol (\r | |
230 | Controller,\r | |
231 | &gEfiDevicePathProtocolGuid,\r | |
232 | (VOID **) &ParentDevicePath,\r | |
233 | This->DriverBindingHandle,\r | |
234 | Controller,\r | |
235 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
236 | );\r | |
237 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
238 | return Status;\r | |
239 | }\r | |
240 | //\r | |
241 | // Open Pci IO Protocol\r | |
242 | //\r | |
243 | Status = gBS->OpenProtocol (\r | |
244 | Controller,\r | |
245 | &gEfiPciIoProtocolGuid,\r | |
246 | (VOID **) &PciIo,\r | |
247 | This->DriverBindingHandle,\r | |
248 | Controller,\r | |
249 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
250 | );\r | |
251 | if (EFI_ERROR (Status)) {\r | |
252 | //\r | |
253 | // Close opened protocol\r | |
254 | //\r | |
255 | gBS->CloseProtocol (\r | |
256 | Controller,\r | |
257 | &gEfiDevicePathProtocolGuid,\r | |
258 | This->DriverBindingHandle,\r | |
259 | Controller\r | |
260 | );\r | |
261 | return Status;\r | |
262 | }\r | |
263 | //\r | |
264 | // Open ISA Acpi Protocol\r | |
265 | //\r | |
266 | Status = gBS->OpenProtocol (\r | |
267 | Controller,\r | |
268 | &gEfiIsaAcpiProtocolGuid,\r | |
269 | (VOID **) &IsaAcpi,\r | |
270 | This->DriverBindingHandle,\r | |
271 | Controller,\r | |
272 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
273 | );\r | |
274 | if (EFI_ERROR (Status) && Status != EFI_ALREADY_STARTED) {\r | |
275 | //\r | |
276 | // Close opened protocol\r | |
277 | //\r | |
278 | gBS->CloseProtocol (\r | |
279 | Controller,\r | |
280 | &gEfiDevicePathProtocolGuid,\r | |
281 | This->DriverBindingHandle,\r | |
282 | Controller\r | |
283 | );\r | |
284 | gBS->CloseProtocol (\r | |
285 | Controller,\r | |
286 | &gEfiPciIoProtocolGuid,\r | |
287 | This->DriverBindingHandle,\r | |
288 | Controller\r | |
289 | );\r | |
290 | return Status;\r | |
291 | }\r | |
292 | //\r | |
293 | // The IsaBus driver will use memory below 16M, which is not tested yet,\r | |
294 | // so call CompatibleRangeTest to test them. Since memory below 1M should\r | |
295 | // be reserved to CSM, and 15M~16M might be reserved for Isa hole, test 1M\r | |
296 | // ~15M here\r | |
297 | //\r | |
298 | Status = gBS->LocateProtocol (\r | |
299 | &gEfiGenericMemTestProtocolGuid,\r | |
300 | NULL,\r | |
301 | (VOID **) &GenMemoryTest\r | |
302 | );\r | |
303 | \r | |
304 | if (!EFI_ERROR (Status)) {\r | |
305 | Status = GenMemoryTest->CompatibleRangeTest (\r | |
306 | GenMemoryTest,\r | |
307 | 0x100000,\r | |
308 | 0xE00000\r | |
309 | );\r | |
310 | }\r | |
311 | //\r | |
312 | // Report Status Code here since we will initialize the host controller\r | |
313 | //\r | |
314 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
315 | EFI_PROGRESS_CODE,\r | |
316 | (EFI_IO_BUS_LPC | EFI_IOB_PC_INIT),\r | |
317 | ParentDevicePath\r | |
318 | );\r | |
319 | \r | |
320 | //\r | |
321 | // first init ISA interface\r | |
322 | //\r | |
323 | IsaAcpi->InterfaceInit (IsaAcpi);\r | |
324 | \r | |
325 | //\r | |
326 | // Report Status Code here since we will enable the host controller\r | |
327 | //\r | |
328 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
329 | EFI_PROGRESS_CODE,\r | |
330 | (EFI_IO_BUS_LPC | EFI_IOB_PC_ENABLE),\r | |
331 | ParentDevicePath\r | |
332 | );\r | |
333 | \r | |
334 | //\r | |
335 | // Create each ISA device handle in this ISA bus\r | |
336 | //\r | |
337 | IsaDevice = NULL;\r | |
338 | do {\r | |
339 | Status = IsaAcpi->DeviceEnumerate (IsaAcpi, &IsaDevice);\r | |
340 | if (EFI_ERROR (Status)) {\r | |
341 | break;\r | |
342 | }\r | |
343 | //\r | |
344 | // Get current resource of this ISA device\r | |
345 | //\r | |
346 | ResourceList = NULL;\r | |
347 | Status = IsaAcpi->GetCurResource (IsaAcpi, IsaDevice, &ResourceList);\r | |
348 | if (EFI_ERROR (Status)) {\r | |
349 | continue;\r | |
350 | }\r | |
351 | \r | |
352 | //\r | |
353 | // Create handle for this ISA device\r | |
354 | //\r | |
355 | Status = IsaCreateDevice (\r | |
356 | This,\r | |
357 | Controller,\r | |
358 | PciIo,\r | |
359 | ParentDevicePath,\r | |
360 | ResourceList,\r | |
361 | &DevicePathData\r | |
362 | //&AllocFailExtendedData.DevicePath\r | |
363 | );\r | |
364 | \r | |
365 | if (EFI_ERROR (Status)) {\r | |
366 | continue;\r | |
367 | }\r | |
368 | //\r | |
369 | // Initialize ISA device\r | |
370 | //\r | |
371 | IsaAcpi->InitDevice (IsaAcpi, IsaDevice);\r | |
372 | \r | |
373 | //\r | |
374 | // Set resources for this ISA device\r | |
375 | //\r | |
376 | Status = IsaAcpi->SetResource (IsaAcpi, IsaDevice, ResourceList);\r | |
377 | \r | |
378 | //\r | |
379 | // Report Status Code here when failed to resource conflicts\r | |
380 | //\r | |
381 | if (EFI_ERROR (Status) && (Status != EFI_UNSUPPORTED)) {\r | |
382 | //\r | |
383 | // It's hard to tell which resource conflicts\r | |
384 | //\r | |
385 | AllocFailExtendedData.Bar = 0;\r | |
386 | AllocFailExtendedData.ReqRes = NULL;\r | |
387 | AllocFailExtendedData.AllocRes = NULL;\r | |
388 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
389 | EFI_ERROR_CODE,\r | |
390 | (EFI_IO_BUS_LPC | EFI_IOB_EC_RESOURCE_CONFLICT),\r | |
391 | DevicePathData\r | |
392 | );\r | |
393 | \r | |
394 | }\r | |
395 | //\r | |
396 | // Set power for this ISA device\r | |
397 | //\r | |
398 | IsaAcpi->SetPower (IsaAcpi, IsaDevice, TRUE);\r | |
399 | \r | |
400 | //\r | |
401 | // Enable this ISA device\r | |
402 | //\r | |
403 | IsaAcpi->EnableDevice (IsaAcpi, IsaDevice, TRUE);\r | |
404 | \r | |
405 | } while (TRUE);\r | |
406 | \r | |
c3902377 | 407 | return EFI_SUCCESS;\r |
408 | }\r | |
409 | \r | |
410 | EFI_STATUS\r | |
411 | EFIAPI\r | |
412 | IsaBusControllerDriverStop (\r | |
413 | IN EFI_DRIVER_BINDING_PROTOCOL * This,\r | |
414 | IN EFI_HANDLE Controller,\r | |
415 | IN UINTN NumberOfChildren,\r | |
416 | IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r | |
417 | )\r | |
418 | /*++\r | |
419 | \r | |
420 | Routine Description:\r | |
421 | \r | |
422 | This function tells the ISA Bus Driver to stop managing a PCI to ISA \r | |
423 | Bridge controller. \r | |
424 | \r | |
425 | Arguments:\r | |
426 | \r | |
427 | This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
428 | Controller - A handle to the device being stopped.\r | |
429 | NumberOfChindren - The number of child device handles in ChildHandleBuffer.\r | |
430 | ChildHandleBuffer - An array of child handles to be freed.\r | |
431 | \r | |
432 | \r | |
433 | Returns:\r | |
434 | \r | |
435 | EFI_SUCCESS - The device was stopped.\r | |
436 | EFI_DEVICE_ERROR - The device could not be stopped due to a device error.\r | |
437 | EFI_NOT_STARTED - The device has not been started.\r | |
438 | EFI_INVALID_PARAMETER - One of the parameters has an invalid value.\r | |
439 | EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r | |
440 | resources.\r | |
441 | \r | |
442 | --*/\r | |
443 | {\r | |
444 | EFI_STATUS Status;\r | |
445 | UINTN Index;\r | |
446 | BOOLEAN AllChildrenStopped;\r | |
447 | ISA_IO_DEVICE *IsaIoDevice;\r | |
448 | EFI_ISA_IO_PROTOCOL *IsaIo;\r | |
449 | \r | |
450 | if (NumberOfChildren == 0) {\r | |
451 | //\r | |
452 | // Close the bus driver\r | |
453 | //\r | |
454 | Status = gBS->CloseProtocol (\r | |
455 | Controller,\r | |
456 | &gEfiPciIoProtocolGuid,\r | |
457 | This->DriverBindingHandle,\r | |
458 | Controller\r | |
459 | );\r | |
460 | if (EFI_ERROR (Status)) {\r | |
461 | return Status;\r | |
462 | }\r | |
463 | \r | |
464 | Status = gBS->CloseProtocol (\r | |
465 | Controller,\r | |
466 | &gEfiDevicePathProtocolGuid,\r | |
467 | This->DriverBindingHandle,\r | |
468 | Controller\r | |
469 | );\r | |
470 | if (EFI_ERROR (Status)) {\r | |
471 | return Status;\r | |
472 | }\r | |
473 | \r | |
474 | Status = gBS->CloseProtocol (\r | |
475 | Controller,\r | |
476 | &gEfiIsaAcpiProtocolGuid,\r | |
477 | This->DriverBindingHandle,\r | |
478 | Controller\r | |
479 | );\r | |
480 | if (EFI_ERROR (Status)) {\r | |
481 | return Status;\r | |
482 | }\r | |
483 | \r | |
484 | return EFI_SUCCESS;\r | |
485 | }\r | |
486 | //\r | |
487 | // Complete all outstanding transactions to Controller.\r | |
488 | // Don't allow any new transaction to Controller to be started.\r | |
489 | //\r | |
490 | //\r | |
491 | // Stop all the children\r | |
492 | // Find all the ISA devices that were discovered on this PCI to ISA Bridge\r | |
493 | // with the Start() function.\r | |
494 | //\r | |
495 | AllChildrenStopped = TRUE;\r | |
496 | \r | |
497 | for (Index = 0; Index < NumberOfChildren; Index++) {\r | |
498 | \r | |
499 | Status = gBS->OpenProtocol (\r | |
500 | ChildHandleBuffer[Index],\r | |
501 | &gEfiIsaIoProtocolGuid,\r | |
502 | (VOID **) &IsaIo,\r | |
503 | This->DriverBindingHandle,\r | |
504 | Controller,\r | |
505 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
506 | );\r | |
507 | if (!EFI_ERROR (Status)) {\r | |
508 | \r | |
509 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (IsaIo);\r | |
510 | \r | |
511 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
512 | ChildHandleBuffer[Index],\r | |
513 | &gEfiDevicePathProtocolGuid,\r | |
514 | IsaIoDevice->DevicePath,\r | |
515 | &gEfiIsaIoProtocolGuid,\r | |
516 | &IsaIoDevice->IsaIo,\r | |
517 | NULL\r | |
518 | );\r | |
519 | \r | |
520 | if (!EFI_ERROR (Status)) {\r | |
521 | //\r | |
522 | // Close the child handle\r | |
523 | //\r | |
524 | Status = gBS->CloseProtocol (\r | |
525 | Controller,\r | |
526 | &gEfiPciIoProtocolGuid,\r | |
527 | This->DriverBindingHandle,\r | |
528 | ChildHandleBuffer[Index]\r | |
529 | );\r | |
530 | \r | |
531 | gBS->FreePool (IsaIoDevice->DevicePath);\r | |
532 | gBS->FreePool (IsaIoDevice);\r | |
533 | }\r | |
534 | }\r | |
535 | \r | |
536 | if (EFI_ERROR (Status)) {\r | |
537 | AllChildrenStopped = FALSE;\r | |
538 | }\r | |
539 | }\r | |
540 | \r | |
541 | if (!AllChildrenStopped) {\r | |
542 | return EFI_DEVICE_ERROR;\r | |
543 | }\r | |
544 | \r | |
545 | return EFI_SUCCESS;\r | |
546 | }\r | |
547 | //\r | |
548 | // Internal Function\r | |
549 | //\r | |
550 | EFI_STATUS\r | |
551 | IsaCreateDevice (\r | |
552 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
553 | IN EFI_HANDLE Controller,\r | |
554 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
555 | IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r | |
556 | IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList,\r | |
557 | OUT EFI_DEVICE_PATH_PROTOCOL **ChildDevicePath\r | |
558 | )\r | |
559 | /*++\r | |
560 | \r | |
561 | Routine Description:\r | |
562 | \r | |
563 | Create ISA device found by IsaPnpProtocol \r | |
564 | \r | |
565 | Arguments:\r | |
566 | \r | |
567 | This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r | |
568 | Controller - The handle of ISA bus controller(PCI to ISA bridge)\r | |
569 | PciIo - The Pointer to the PCI protocol \r | |
570 | ParentDevicePath - Device path of the ISA bus controller\r | |
571 | IsaDeviceResourceList - The resource list of the ISA device\r | |
572 | ChildDevicePath - The pointer to the child device.\r | |
573 | \r | |
574 | Returns:\r | |
575 | \r | |
576 | EFI_SUCCESS - Create the child device.\r | |
577 | EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r | |
578 | resources.\r | |
579 | EFI_DEVICE_ERROR - Can not create child device.\r | |
580 | \r | |
581 | --*/\r | |
582 | {\r | |
583 | EFI_STATUS Status;\r | |
584 | ISA_IO_DEVICE *IsaIoDevice;\r | |
585 | EFI_DEV_PATH Node;\r | |
586 | \r | |
587 | //\r | |
588 | // Initialize the PCI_IO_DEVICE structure\r | |
589 | //\r | |
590 | IsaIoDevice = AllocateZeroPool (sizeof (ISA_IO_DEVICE));\r | |
591 | if (IsaIoDevice == NULL) {\r | |
592 | return EFI_OUT_OF_RESOURCES;\r | |
593 | }\r | |
594 | \r | |
595 | IsaIoDevice->Signature = ISA_IO_DEVICE_SIGNATURE;\r | |
596 | IsaIoDevice->Handle = NULL;\r | |
597 | IsaIoDevice->PciIo = PciIo;\r | |
598 | \r | |
599 | //\r | |
600 | // Initialize the ISA I/O instance structure\r | |
601 | //\r | |
602 | Status = InitializeIsaIoInstance (IsaIoDevice, IsaDeviceResourceList);\r | |
603 | if (EFI_ERROR (Status)) {\r | |
604 | gBS->FreePool (IsaIoDevice);\r | |
605 | return Status;\r | |
606 | }\r | |
607 | //\r | |
608 | // Build the child device path\r | |
609 | //\r | |
610 | Node.DevPath.Type = ACPI_DEVICE_PATH;\r | |
611 | Node.DevPath.SubType = ACPI_DP;\r | |
612 | SetDevicePathNodeLength (&Node.DevPath, sizeof (ACPI_HID_DEVICE_PATH));\r | |
613 | Node.Acpi.HID = IsaDeviceResourceList->Device.HID;\r | |
614 | Node.Acpi.UID = IsaDeviceResourceList->Device.UID;\r | |
615 | \r | |
616 | IsaIoDevice->DevicePath = AppendDevicePathNode (\r | |
617 | ParentDevicePath,\r | |
618 | &Node.DevPath\r | |
619 | );\r | |
620 | \r | |
621 | if (IsaIoDevice->DevicePath == NULL) {\r | |
622 | Status = EFI_DEVICE_ERROR;\r | |
623 | goto Done;\r | |
624 | }\r | |
625 | \r | |
626 | *ChildDevicePath = IsaIoDevice->DevicePath;\r | |
627 | \r | |
628 | //\r | |
629 | // Create a child handle and attach the DevicePath,\r | |
630 | // PCI I/O, and Controller State\r | |
631 | //\r | |
632 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
633 | &IsaIoDevice->Handle,\r | |
634 | &gEfiDevicePathProtocolGuid,\r | |
635 | IsaIoDevice->DevicePath,\r | |
636 | &gEfiIsaIoProtocolGuid,\r | |
637 | &IsaIoDevice->IsaIo,\r | |
638 | NULL\r | |
639 | );\r | |
640 | if (EFI_ERROR (Status)) {\r | |
641 | goto Done;\r | |
642 | }\r | |
643 | \r | |
644 | Status = gBS->OpenProtocol (\r | |
645 | Controller,\r | |
646 | &gEfiPciIoProtocolGuid,\r | |
647 | (VOID **) &PciIo,\r | |
648 | This->DriverBindingHandle,\r | |
649 | IsaIoDevice->Handle,\r | |
650 | EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER\r | |
651 | );\r | |
652 | if (EFI_ERROR (Status)) {\r | |
653 | gBS->UninstallMultipleProtocolInterfaces (\r | |
654 | IsaIoDevice->Handle,\r | |
655 | &gEfiDevicePathProtocolGuid,\r | |
656 | IsaIoDevice->DevicePath,\r | |
657 | &gEfiIsaIoProtocolGuid,\r | |
658 | &IsaIoDevice->IsaIo,\r | |
659 | NULL\r | |
660 | );\r | |
661 | }\r | |
662 | \r | |
663 | Done:\r | |
664 | \r | |
665 | if (EFI_ERROR (Status)) {\r | |
666 | if (IsaIoDevice->DevicePath != NULL) {\r | |
667 | gBS->FreePool (IsaIoDevice->DevicePath);\r | |
668 | }\r | |
669 | \r | |
670 | gBS->FreePool (IsaIoDevice);\r | |
671 | }\r | |
672 | \r | |
673 | return Status;\r | |
674 | }\r |