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3f5ed3fa JY |
1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
4 | \r | |
5 | This program and the accompanying materials are licensed and made available under\r | |
6 | the terms and conditions of the BSD License which accompanies this distribution.\r | |
7 | 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 <Uefi.h>\r | |
16 | #include <PiPei.h>\r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/BaseMemoryLib.h>\r | |
19 | #include <Library/MemoryAllocationLib.h>\r | |
20 | #include <Library/IoLib.h>\r | |
21 | #include <Library/DebugLib.h>\r | |
22 | #include <Library/PeiServicesLib.h>\r | |
23 | #include <Library/HobLib.h>\r | |
24 | #include <IndustryStandard/Vtd.h>\r | |
25 | #include <Ppi/IoMmu.h>\r | |
4084ccfa | 26 | #include <Ppi/VtdInfo.h>\r |
3f5ed3fa JY |
27 | \r |
28 | #include "IntelVTdPmrPei.h"\r | |
29 | \r | |
30 | #define TOTAL_DMA_BUFFER_SIZE SIZE_4MB\r | |
31 | \r | |
32 | EDKII_VTD_INFO_PPI *mVTdInfoPpi;\r | |
33 | UINTN mDmaBufferBase;\r | |
34 | UINTN mDmaBufferSize = TOTAL_DMA_BUFFER_SIZE;\r | |
35 | UINTN mDmaBufferCurrentTop;\r | |
36 | UINTN mDmaBufferCurrentBottom;\r | |
37 | \r | |
38 | #define MAP_INFO_SIGNATURE SIGNATURE_32 ('D', 'M', 'A', 'P')\r | |
39 | typedef struct {\r | |
40 | UINT32 Signature;\r | |
41 | EDKII_IOMMU_OPERATION Operation;\r | |
42 | UINTN NumberOfBytes;\r | |
43 | EFI_PHYSICAL_ADDRESS HostAddress;\r | |
44 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
45 | } MAP_INFO;\r | |
46 | \r | |
47 | /**\r | |
48 | \r | |
49 | PEI Memory Layout:\r | |
50 | \r | |
51 | +------------------+ <------- EfiMemoryTop\r | |
52 | | PEI allocated |\r | |
53 | =========== +==================+\r | |
54 | ^ | Commom Buf |\r | |
55 | | | -------------- |\r | |
56 | DMA Buffer | * DMA FREE * |\r | |
57 | | | -------------- |\r | |
58 | V | Read/Write Buf |\r | |
59 | =========== +==================+\r | |
60 | | PEI allocated |\r | |
61 | | -------------- | <------- EfiFreeMemoryTop\r | |
62 | | * PEI FREE * |\r | |
63 | | -------------- | <------- EfiFreeMemoryBottom\r | |
64 | | hob |\r | |
65 | | -------------- |\r | |
66 | | Stack |\r | |
67 | +------------------+ <------- EfiMemoryBottom / Stack Bottom\r | |
68 | \r | |
69 | +------------------+\r | |
70 | | Mem Alloc Hob |\r | |
71 | +------------------+\r | |
72 | \r | |
73 | **/\r | |
74 | \r | |
75 | \r | |
76 | /**\r | |
77 | Set IOMMU attribute for a system memory.\r | |
78 | \r | |
79 | If the IOMMU PPI exists, the system memory cannot be used\r | |
80 | for DMA by default.\r | |
81 | \r | |
82 | When a device requests a DMA access for a system memory,\r | |
83 | the device driver need use SetAttribute() to update the IOMMU\r | |
84 | attribute to request DMA access (read and/or write).\r | |
85 | \r | |
86 | @param[in] This The PPI instance pointer.\r | |
87 | @param[in] Mapping The mapping value returned from Map().\r | |
88 | @param[in] IoMmuAccess The IOMMU access.\r | |
89 | \r | |
90 | @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by DeviceAddress and Length.\r | |
91 | @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().\r | |
92 | @retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.\r | |
93 | @retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.\r | |
94 | @retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by Mapping.\r | |
95 | @retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.\r | |
96 | @retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.\r | |
97 | \r | |
98 | **/\r | |
99 | EFI_STATUS\r | |
100 | EFIAPI\r | |
101 | PeiIoMmuSetAttribute (\r | |
102 | IN EDKII_IOMMU_PPI *This,\r | |
103 | IN VOID *Mapping,\r | |
104 | IN UINT64 IoMmuAccess\r | |
105 | )\r | |
106 | {\r | |
107 | return EFI_SUCCESS;\r | |
108 | }\r | |
109 | \r | |
110 | /**\r | |
111 | Provides the controller-specific addresses required to access system memory from a\r | |
112 | DMA bus master.\r | |
113 | \r | |
114 | @param This The PPI instance pointer.\r | |
115 | @param Operation Indicates if the bus master is going to read or write to system memory.\r | |
116 | @param HostAddress The system memory address to map to the PCI controller.\r | |
117 | @param NumberOfBytes On input the number of bytes to map. On output the number of bytes\r | |
118 | that were mapped.\r | |
119 | @param DeviceAddress The resulting map address for the bus master PCI controller to use to\r | |
120 | access the hosts HostAddress.\r | |
121 | @param Mapping A resulting value to pass to Unmap().\r | |
122 | \r | |
123 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r | |
124 | @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.\r | |
125 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
126 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
127 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r | |
128 | \r | |
129 | **/\r | |
130 | EFI_STATUS\r | |
131 | EFIAPI\r | |
132 | PeiIoMmuMap (\r | |
133 | IN EDKII_IOMMU_PPI *This,\r | |
134 | IN EDKII_IOMMU_OPERATION Operation,\r | |
135 | IN VOID *HostAddress,\r | |
136 | IN OUT UINTN *NumberOfBytes,\r | |
137 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
138 | OUT VOID **Mapping\r | |
139 | )\r | |
140 | {\r | |
141 | MAP_INFO *MapInfo;\r | |
142 | UINTN Length;\r | |
143 | \r | |
144 | if (Operation == EdkiiIoMmuOperationBusMasterCommonBuffer ||\r | |
145 | Operation == EdkiiIoMmuOperationBusMasterCommonBuffer64) {\r | |
146 | *DeviceAddress = (UINTN)HostAddress;\r | |
147 | *Mapping = 0;\r | |
148 | return EFI_SUCCESS;\r | |
149 | }\r | |
150 | \r | |
151 | DEBUG ((DEBUG_VERBOSE, "PeiIoMmuMap - HostAddress - 0x%x, NumberOfBytes - %x\n", HostAddress, *NumberOfBytes));\r | |
152 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentTop - %x\n", mDmaBufferCurrentTop));\r | |
153 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentBottom - %x\n", mDmaBufferCurrentBottom));\r | |
154 | \r | |
155 | Length = *NumberOfBytes + sizeof(MAP_INFO);\r | |
156 | if (Length > mDmaBufferCurrentTop - mDmaBufferCurrentBottom) {\r | |
157 | DEBUG ((DEBUG_ERROR, "PeiIoMmuMap - OUT_OF_RESOURCE\n"));\r | |
158 | ASSERT (FALSE);\r | |
159 | return EFI_OUT_OF_RESOURCES;\r | |
160 | }\r | |
161 | \r | |
162 | *DeviceAddress = mDmaBufferCurrentBottom;\r | |
163 | mDmaBufferCurrentBottom += Length;\r | |
164 | \r | |
165 | MapInfo = (VOID *)(UINTN)(*DeviceAddress + *NumberOfBytes);\r | |
166 | MapInfo->Signature = MAP_INFO_SIGNATURE;\r | |
167 | MapInfo->Operation = Operation;\r | |
168 | MapInfo->NumberOfBytes = *NumberOfBytes;\r | |
169 | MapInfo->HostAddress = (UINTN)HostAddress;\r | |
170 | MapInfo->DeviceAddress = *DeviceAddress;\r | |
171 | *Mapping = MapInfo;\r | |
172 | DEBUG ((DEBUG_VERBOSE, " Op(%x):DeviceAddress - %x, Mapping - %x\n", Operation, (UINTN)*DeviceAddress, MapInfo));\r | |
173 | \r | |
174 | //\r | |
175 | // If this is a read operation from the Bus Master's point of view,\r | |
176 | // then copy the contents of the real buffer into the mapped buffer\r | |
177 | // so the Bus Master can read the contents of the real buffer.\r | |
178 | //\r | |
179 | if (Operation == EdkiiIoMmuOperationBusMasterRead ||\r | |
180 | Operation == EdkiiIoMmuOperationBusMasterRead64) {\r | |
181 | CopyMem (\r | |
182 | (VOID *) (UINTN) MapInfo->DeviceAddress,\r | |
183 | (VOID *) (UINTN) MapInfo->HostAddress,\r | |
184 | MapInfo->NumberOfBytes\r | |
185 | );\r | |
186 | }\r | |
187 | \r | |
188 | return EFI_SUCCESS;\r | |
189 | }\r | |
190 | \r | |
191 | /**\r | |
192 | Completes the Map() operation and releases any corresponding resources.\r | |
193 | \r | |
194 | @param This The PPI instance pointer.\r | |
195 | @param Mapping The mapping value returned from Map().\r | |
196 | \r | |
197 | @retval EFI_SUCCESS The range was unmapped.\r | |
198 | @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().\r | |
199 | @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r | |
200 | **/\r | |
201 | EFI_STATUS\r | |
202 | EFIAPI\r | |
203 | PeiIoMmuUnmap (\r | |
204 | IN EDKII_IOMMU_PPI *This,\r | |
205 | IN VOID *Mapping\r | |
206 | )\r | |
207 | {\r | |
208 | MAP_INFO *MapInfo;\r | |
209 | UINTN Length;\r | |
210 | \r | |
211 | if (Mapping == NULL) {\r | |
212 | return EFI_SUCCESS;\r | |
213 | }\r | |
214 | \r | |
215 | DEBUG ((DEBUG_VERBOSE, "PeiIoMmuUnmap - Mapping - %x\n", Mapping));\r | |
216 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentTop - %x\n", mDmaBufferCurrentTop));\r | |
217 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentBottom - %x\n", mDmaBufferCurrentBottom));\r | |
218 | \r | |
219 | MapInfo = Mapping;\r | |
220 | ASSERT (MapInfo->Signature == MAP_INFO_SIGNATURE);\r | |
221 | DEBUG ((DEBUG_VERBOSE, " Op(%x):DeviceAddress - %x, NumberOfBytes - %x\n", MapInfo->Operation, (UINTN)MapInfo->DeviceAddress, MapInfo->NumberOfBytes));\r | |
222 | \r | |
223 | //\r | |
224 | // If this is a write operation from the Bus Master's point of view,\r | |
225 | // then copy the contents of the mapped buffer into the real buffer\r | |
226 | // so the processor can read the contents of the real buffer.\r | |
227 | //\r | |
228 | if (MapInfo->Operation == EdkiiIoMmuOperationBusMasterWrite ||\r | |
229 | MapInfo->Operation == EdkiiIoMmuOperationBusMasterWrite64) {\r | |
230 | CopyMem (\r | |
231 | (VOID *) (UINTN) MapInfo->HostAddress,\r | |
232 | (VOID *) (UINTN) MapInfo->DeviceAddress,\r | |
233 | MapInfo->NumberOfBytes\r | |
234 | );\r | |
235 | }\r | |
236 | \r | |
237 | Length = MapInfo->NumberOfBytes + sizeof(MAP_INFO);\r | |
238 | if (mDmaBufferCurrentBottom == MapInfo->DeviceAddress + Length) {\r | |
239 | mDmaBufferCurrentBottom -= Length;\r | |
240 | }\r | |
241 | \r | |
242 | return EFI_SUCCESS;\r | |
243 | }\r | |
244 | \r | |
245 | /**\r | |
246 | Allocates pages that are suitable for an OperationBusMasterCommonBuffer or\r | |
247 | OperationBusMasterCommonBuffer64 mapping.\r | |
248 | \r | |
249 | @param This The PPI instance pointer.\r | |
250 | @param MemoryType The type of memory to allocate, EfiBootServicesData or\r | |
251 | EfiRuntimeServicesData.\r | |
252 | @param Pages The number of pages to allocate.\r | |
253 | @param HostAddress A pointer to store the base system memory address of the\r | |
254 | allocated range.\r | |
255 | @param Attributes The requested bit mask of attributes for the allocated range.\r | |
256 | \r | |
257 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
258 | @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are\r | |
259 | MEMORY_WRITE_COMBINE and MEMORY_CACHED.\r | |
260 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
261 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
262 | \r | |
263 | **/\r | |
264 | EFI_STATUS\r | |
265 | EFIAPI\r | |
266 | PeiIoMmuAllocateBuffer (\r | |
267 | IN EDKII_IOMMU_PPI *This,\r | |
268 | IN EFI_MEMORY_TYPE MemoryType,\r | |
269 | IN UINTN Pages,\r | |
270 | IN OUT VOID **HostAddress,\r | |
271 | IN UINT64 Attributes\r | |
272 | )\r | |
273 | {\r | |
274 | UINTN Length;\r | |
275 | \r | |
276 | DEBUG ((DEBUG_VERBOSE, "PeiIoMmuAllocateBuffer - page - %x\n", Pages));\r | |
277 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentTop - %x\n", mDmaBufferCurrentTop));\r | |
278 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentBottom - %x\n", mDmaBufferCurrentBottom));\r | |
279 | \r | |
280 | Length = EFI_PAGES_TO_SIZE(Pages);\r | |
281 | if (Length > mDmaBufferCurrentTop - mDmaBufferCurrentBottom) {\r | |
282 | DEBUG ((DEBUG_ERROR, "PeiIoMmuAllocateBuffer - OUT_OF_RESOURCE\n"));\r | |
283 | ASSERT (FALSE);\r | |
284 | return EFI_OUT_OF_RESOURCES;\r | |
285 | }\r | |
286 | *HostAddress = (VOID *)(UINTN)(mDmaBufferCurrentTop - Length);\r | |
287 | mDmaBufferCurrentTop -= Length;\r | |
288 | \r | |
289 | DEBUG ((DEBUG_VERBOSE, "PeiIoMmuAllocateBuffer - allocate - %x\n", *HostAddress));\r | |
290 | return EFI_SUCCESS;\r | |
291 | }\r | |
292 | \r | |
293 | /**\r | |
294 | Frees memory that was allocated with AllocateBuffer().\r | |
295 | \r | |
296 | @param This The PPI instance pointer.\r | |
297 | @param Pages The number of pages to free.\r | |
298 | @param HostAddress The base system memory address of the allocated range.\r | |
299 | \r | |
300 | @retval EFI_SUCCESS The requested memory pages were freed.\r | |
301 | @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages\r | |
302 | was not allocated with AllocateBuffer().\r | |
303 | \r | |
304 | **/\r | |
305 | EFI_STATUS\r | |
306 | EFIAPI\r | |
307 | PeiIoMmuFreeBuffer (\r | |
308 | IN EDKII_IOMMU_PPI *This,\r | |
309 | IN UINTN Pages,\r | |
310 | IN VOID *HostAddress\r | |
311 | )\r | |
312 | {\r | |
313 | UINTN Length;\r | |
314 | \r | |
315 | DEBUG ((DEBUG_VERBOSE, "PeiIoMmuFreeBuffer - page - %x, HostAddr - %x\n", Pages, HostAddress));\r | |
316 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentTop - %x\n", mDmaBufferCurrentTop));\r | |
317 | DEBUG ((DEBUG_VERBOSE, " mDmaBufferCurrentBottom - %x\n", mDmaBufferCurrentBottom));\r | |
318 | \r | |
319 | Length = EFI_PAGES_TO_SIZE(Pages);\r | |
320 | if ((UINTN)HostAddress == mDmaBufferCurrentTop) {\r | |
321 | mDmaBufferCurrentTop += Length;\r | |
322 | }\r | |
323 | \r | |
324 | return EFI_SUCCESS;\r | |
325 | }\r | |
326 | \r | |
327 | EDKII_IOMMU_PPI mIoMmuPpi = {\r | |
328 | EDKII_IOMMU_PPI_REVISION,\r | |
329 | PeiIoMmuSetAttribute,\r | |
330 | PeiIoMmuMap,\r | |
331 | PeiIoMmuUnmap,\r | |
332 | PeiIoMmuAllocateBuffer,\r | |
333 | PeiIoMmuFreeBuffer,\r | |
334 | };\r | |
335 | \r | |
336 | CONST EFI_PEI_PPI_DESCRIPTOR mIoMmuPpiList = {\r | |
337 | EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r | |
338 | &gEdkiiIoMmuPpiGuid,\r | |
339 | (VOID *) &mIoMmuPpi\r | |
340 | };\r | |
341 | \r | |
342 | #define MEMORY_ATTRIBUTE_MASK (EFI_RESOURCE_ATTRIBUTE_PRESENT | \\r | |
343 | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \\r | |
344 | EFI_RESOURCE_ATTRIBUTE_TESTED | \\r | |
345 | EFI_RESOURCE_ATTRIBUTE_16_BIT_IO | \\r | |
346 | EFI_RESOURCE_ATTRIBUTE_32_BIT_IO | \\r | |
347 | EFI_RESOURCE_ATTRIBUTE_64_BIT_IO \\r | |
348 | )\r | |
349 | \r | |
350 | #define TESTED_MEMORY_ATTRIBUTES (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED | EFI_RESOURCE_ATTRIBUTE_TESTED)\r | |
351 | \r | |
352 | #define INITIALIZED_MEMORY_ATTRIBUTES (EFI_RESOURCE_ATTRIBUTE_PRESENT | EFI_RESOURCE_ATTRIBUTE_INITIALIZED)\r | |
353 | \r | |
354 | #define PRESENT_MEMORY_ATTRIBUTES (EFI_RESOURCE_ATTRIBUTE_PRESENT)\r | |
355 | \r | |
356 | GLOBAL_REMOVE_IF_UNREFERENCED CHAR8 *mResourceTypeShortName[] = {\r | |
357 | "Mem",\r | |
358 | "MMIO",\r | |
359 | "I/O",\r | |
360 | "FD",\r | |
361 | "MM Port I/O",\r | |
362 | "Reserved Mem",\r | |
363 | "Reserved I/O",\r | |
364 | };\r | |
365 | \r | |
366 | /**\r | |
367 | Return the short name of resource type.\r | |
368 | \r | |
369 | @param Type resource type.\r | |
370 | \r | |
371 | @return the short name of resource type.\r | |
372 | **/\r | |
373 | CHAR8 *\r | |
374 | ShortNameOfResourceType (\r | |
375 | IN UINT32 Type\r | |
376 | )\r | |
377 | {\r | |
378 | if (Type < sizeof(mResourceTypeShortName) / sizeof(mResourceTypeShortName[0])) {\r | |
379 | return mResourceTypeShortName[Type];\r | |
380 | } else {\r | |
381 | return "Unknown";\r | |
382 | }\r | |
383 | }\r | |
384 | \r | |
385 | /**\r | |
386 | Dump resource hob.\r | |
387 | \r | |
388 | @param HobList the HOB list.\r | |
389 | **/\r | |
390 | VOID\r | |
391 | DumpResourceHob (\r | |
392 | IN VOID *HobList\r | |
393 | )\r | |
394 | {\r | |
395 | EFI_PEI_HOB_POINTERS Hob;\r | |
396 | EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;\r | |
397 | \r | |
398 | DEBUG ((DEBUG_VERBOSE, "Resource Descriptor HOBs\n"));\r | |
399 | for (Hob.Raw = HobList; !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {\r | |
400 | if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r | |
401 | ResourceHob = Hob.ResourceDescriptor;\r | |
402 | DEBUG ((DEBUG_VERBOSE,\r | |
403 | " BA=%016lx L=%016lx Attr=%08x ",\r | |
404 | ResourceHob->PhysicalStart,\r | |
405 | ResourceHob->ResourceLength,\r | |
406 | ResourceHob->ResourceAttribute\r | |
407 | ));\r | |
408 | DEBUG ((DEBUG_VERBOSE, ShortNameOfResourceType(ResourceHob->ResourceType)));\r | |
409 | switch (ResourceHob->ResourceType) {\r | |
410 | case EFI_RESOURCE_SYSTEM_MEMORY:\r | |
411 | if ((ResourceHob->ResourceAttribute & EFI_RESOURCE_ATTRIBUTE_PERSISTENT) != 0) {\r | |
412 | DEBUG ((DEBUG_VERBOSE, " (Persistent)"));\r | |
413 | } else if ((ResourceHob->ResourceAttribute & EFI_RESOURCE_ATTRIBUTE_MORE_RELIABLE) != 0) {\r | |
414 | DEBUG ((DEBUG_VERBOSE, " (MoreReliable)"));\r | |
415 | } else if ((ResourceHob->ResourceAttribute & MEMORY_ATTRIBUTE_MASK) == TESTED_MEMORY_ATTRIBUTES) {\r | |
416 | DEBUG ((DEBUG_VERBOSE, " (Tested)"));\r | |
417 | } else if ((ResourceHob->ResourceAttribute & MEMORY_ATTRIBUTE_MASK) == INITIALIZED_MEMORY_ATTRIBUTES) {\r | |
418 | DEBUG ((DEBUG_VERBOSE, " (Init)"));\r | |
419 | } else if ((ResourceHob->ResourceAttribute & MEMORY_ATTRIBUTE_MASK) == PRESENT_MEMORY_ATTRIBUTES) {\r | |
420 | DEBUG ((DEBUG_VERBOSE, " (Present)"));\r | |
421 | } else {\r | |
422 | DEBUG ((DEBUG_VERBOSE, " (Unknown)"));\r | |
423 | }\r | |
424 | break;\r | |
425 | default:\r | |
426 | break;\r | |
427 | }\r | |
428 | DEBUG ((DEBUG_VERBOSE, "\n"));\r | |
429 | }\r | |
430 | }\r | |
431 | }\r | |
432 | \r | |
433 | /**\r | |
434 | Dump PHIT hob.\r | |
435 | \r | |
436 | @param HobList the HOB list.\r | |
437 | **/\r | |
438 | VOID\r | |
439 | DumpPhitHob (\r | |
440 | IN VOID *HobList\r | |
441 | )\r | |
442 | {\r | |
443 | EFI_HOB_HANDOFF_INFO_TABLE *PhitHob;\r | |
444 | \r | |
445 | PhitHob = HobList;\r | |
446 | ASSERT(GET_HOB_TYPE(HobList) == EFI_HOB_TYPE_HANDOFF);\r | |
447 | DEBUG ((DEBUG_VERBOSE, "PHIT HOB\n"));\r | |
448 | DEBUG ((DEBUG_VERBOSE, " PhitHob - 0x%x\n", PhitHob));\r | |
449 | DEBUG ((DEBUG_VERBOSE, " BootMode - 0x%x\n", PhitHob->BootMode));\r | |
450 | DEBUG ((DEBUG_VERBOSE, " EfiMemoryTop - 0x%016lx\n", PhitHob->EfiMemoryTop));\r | |
451 | DEBUG ((DEBUG_VERBOSE, " EfiMemoryBottom - 0x%016lx\n", PhitHob->EfiMemoryBottom));\r | |
452 | DEBUG ((DEBUG_VERBOSE, " EfiFreeMemoryTop - 0x%016lx\n", PhitHob->EfiFreeMemoryTop));\r | |
453 | DEBUG ((DEBUG_VERBOSE, " EfiFreeMemoryBottom - 0x%016lx\n", PhitHob->EfiFreeMemoryBottom));\r | |
454 | DEBUG ((DEBUG_VERBOSE, " EfiEndOfHobList - 0x%lx\n", PhitHob->EfiEndOfHobList));\r | |
455 | }\r | |
456 | \r | |
457 | /**\r | |
458 | Get the highest memory.\r | |
459 | \r | |
460 | @param HobList the HOB list.\r | |
461 | \r | |
462 | @return the highest memory.\r | |
463 | **/\r | |
464 | UINT64\r | |
465 | GetTopMemory (\r | |
466 | IN VOID *HobList\r | |
467 | )\r | |
468 | {\r | |
469 | EFI_PEI_HOB_POINTERS Hob;\r | |
470 | EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;\r | |
471 | UINT64 TopMemory;\r | |
472 | UINT64 ResourceTop;\r | |
473 | \r | |
474 | TopMemory = 0;\r | |
475 | for (Hob.Raw = HobList; !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {\r | |
476 | if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r | |
477 | ResourceHob = Hob.ResourceDescriptor;\r | |
478 | switch (ResourceHob->ResourceType) {\r | |
479 | case EFI_RESOURCE_SYSTEM_MEMORY:\r | |
480 | ResourceTop = ResourceHob->PhysicalStart + ResourceHob->ResourceLength;\r | |
481 | if (TopMemory < ResourceTop) {\r | |
482 | TopMemory = ResourceTop;\r | |
483 | }\r | |
484 | break;\r | |
485 | default:\r | |
486 | break;\r | |
487 | }\r | |
488 | DEBUG ((DEBUG_VERBOSE, "\n"));\r | |
489 | }\r | |
490 | }\r | |
491 | return TopMemory;\r | |
492 | }\r | |
493 | \r | |
494 | /**\r | |
495 | Initialize DMA protection.\r | |
496 | \r | |
497 | @param DmaBufferSize the DMA buffer size\r | |
498 | @param DmaBufferBase the DMA buffer base\r | |
499 | \r | |
500 | @retval EFI_SUCCESS the DMA protection is initialized.\r | |
501 | @retval EFI_OUT_OF_RESOURCES no enough resource to initialize DMA protection.\r | |
502 | **/\r | |
503 | EFI_STATUS\r | |
504 | InitDmaProtection (\r | |
505 | IN UINTN DmaBufferSize,\r | |
506 | OUT UINTN *DmaBufferBase\r | |
507 | )\r | |
508 | {\r | |
509 | EFI_STATUS Status;\r | |
510 | VOID *HobList;\r | |
511 | EFI_HOB_HANDOFF_INFO_TABLE *PhitHob;\r | |
512 | UINT32 LowMemoryAlignment;\r | |
513 | UINT64 HighMemoryAlignment;\r | |
514 | UINTN MemoryAlignment;\r | |
515 | UINTN LowBottom;\r | |
516 | UINTN LowTop;\r | |
517 | UINTN HighBottom;\r | |
518 | UINT64 HighTop;\r | |
519 | \r | |
520 | HobList = GetHobList ();\r | |
521 | DumpPhitHob (HobList);\r | |
522 | DumpResourceHob (HobList);\r | |
523 | \r | |
524 | PhitHob = HobList;\r | |
525 | \r | |
526 | ASSERT (PhitHob->EfiMemoryBottom < PhitHob->EfiMemoryTop);\r | |
527 | \r | |
528 | LowMemoryAlignment = GetLowMemoryAlignment ();\r | |
529 | HighMemoryAlignment = GetHighMemoryAlignment ();\r | |
530 | if (LowMemoryAlignment < HighMemoryAlignment) {\r | |
531 | MemoryAlignment = (UINTN)HighMemoryAlignment;\r | |
532 | } else {\r | |
533 | MemoryAlignment = LowMemoryAlignment;\r | |
534 | }\r | |
535 | ASSERT (DmaBufferSize == ALIGN_VALUE(DmaBufferSize, MemoryAlignment));\r | |
536 | *DmaBufferBase = (UINTN)AllocateAlignedPages (EFI_SIZE_TO_PAGES(DmaBufferSize), MemoryAlignment);\r | |
537 | if (*DmaBufferBase == 0) {\r | |
538 | DEBUG ((DEBUG_INFO, " InitDmaProtection : OutOfResource\n"));\r | |
539 | return EFI_OUT_OF_RESOURCES;\r | |
540 | }\r | |
541 | \r | |
542 | LowBottom = 0;\r | |
543 | LowTop = *DmaBufferBase;\r | |
544 | HighBottom = *DmaBufferBase + DmaBufferSize;\r | |
545 | HighTop = GetTopMemory (HobList);\r | |
546 | \r | |
547 | Status = SetDmaProtectedRange (\r | |
548 | (UINT32)LowBottom,\r | |
549 | (UINT32)(LowTop - LowBottom),\r | |
550 | HighBottom,\r | |
551 | HighTop - HighBottom\r | |
552 | );\r | |
553 | \r | |
554 | if (EFI_ERROR(Status)) {\r | |
555 | FreePages ((VOID *)*DmaBufferBase, EFI_SIZE_TO_PAGES(DmaBufferSize));\r | |
556 | }\r | |
557 | \r | |
558 | return Status;\r | |
559 | }\r | |
560 | \r | |
561 | /**\r | |
562 | Initializes the Intel VTd PMR PEIM.\r | |
563 | \r | |
564 | @param FileHandle Handle of the file being invoked.\r | |
565 | @param PeiServices Describes the list of possible PEI Services.\r | |
566 | \r | |
567 | @retval EFI_SUCCESS Usb bot driver is successfully initialized.\r | |
568 | @retval EFI_OUT_OF_RESOURCES Can't initialize the driver.\r | |
569 | \r | |
570 | **/\r | |
571 | EFI_STATUS\r | |
572 | EFIAPI\r | |
573 | IntelVTdPmrInitialize (\r | |
574 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
575 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
576 | )\r | |
577 | {\r | |
578 | EFI_STATUS Status;\r | |
579 | \r | |
580 | if ((PcdGet8(PcdVTdPolicyPropertyMask) & BIT0) == 0) {\r | |
581 | return EFI_UNSUPPORTED;\r | |
582 | }\r | |
583 | \r | |
584 | Status = PeiServicesLocatePpi (\r | |
585 | &gEdkiiVTdInfoPpiGuid,\r | |
586 | 0,\r | |
587 | NULL,\r | |
588 | (VOID **)&mVTdInfoPpi\r | |
589 | );\r | |
590 | ASSERT_EFI_ERROR(Status);\r | |
591 | \r | |
592 | //\r | |
593 | // Find a pre-memory in resource hob as DMA buffer\r | |
594 | // Mark PEI memory to be DMA protected.\r | |
595 | //\r | |
596 | Status = InitDmaProtection (mDmaBufferSize, &mDmaBufferBase);\r | |
597 | if (EFI_ERROR(Status)) {\r | |
598 | return Status;\r | |
599 | }\r | |
600 | \r | |
601 | DEBUG ((DEBUG_INFO, " DmaBufferBase : 0x%x\n", mDmaBufferBase));\r | |
602 | DEBUG ((DEBUG_INFO, " DmaBufferSize : 0x%x\n", mDmaBufferSize));\r | |
603 | \r | |
604 | mDmaBufferCurrentTop = mDmaBufferBase + mDmaBufferSize;\r | |
605 | mDmaBufferCurrentBottom = mDmaBufferBase;\r | |
606 | \r | |
607 | //\r | |
608 | // Install PPI.\r | |
609 | //\r | |
610 | Status = PeiServicesInstallPpi (&mIoMmuPpiList);\r | |
611 | ASSERT_EFI_ERROR(Status);\r | |
612 | \r | |
613 | return Status;\r | |
614 | }\r | |
615 | \r |