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2cb6eabe EL |
1 | /** @file\r |
2 | Debug Port Library implementation based on usb3 debug port.\r | |
3 | \r | |
de8373fa | 4 | Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>\r |
2cb6eabe EL |
5 | This program and the accompanying materials\r |
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 <PiPei.h>\r | |
16 | #include <Library/PeiServicesLib.h>\r | |
de8373fa | 17 | #include <Library/HobLib.h>\r |
364f63c0 | 18 | #include <Ppi/MemoryDiscovered.h>\r |
de8373fa | 19 | #include <Ppi/IoMmu.h>\r |
2cb6eabe EL |
20 | #include "DebugCommunicationLibUsb3Internal.h"\r |
21 | \r | |
de8373fa SZ |
22 | GUID gUsb3DbgGuid = USB3_DBG_GUID;\r |
23 | \r | |
24 | /**\r | |
25 | USB3 IOMMU PPI notify.\r | |
26 | \r | |
27 | @param[in] PeiServices Pointer to PEI Services Table.\r | |
28 | @param[in] NotifyDesc Pointer to the descriptor for the Notification event that\r | |
29 | caused this function to execute.\r | |
30 | @param[in] Ppi Pointer to the PPI data associated with this function.\r | |
31 | \r | |
32 | @retval EFI_STATUS Always return EFI_SUCCESS\r | |
33 | **/\r | |
34 | EFI_STATUS\r | |
35 | EFIAPI\r | |
36 | Usb3IoMmuPpiNotify (\r | |
37 | IN EFI_PEI_SERVICES **PeiServices,\r | |
38 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,\r | |
39 | IN VOID *Ppi\r | |
40 | )\r | |
41 | {\r | |
42 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
43 | \r | |
44 | DEBUG ((DEBUG_INFO, "%a()\n", __FUNCTION__));\r | |
45 | \r | |
46 | Instance = GetUsb3DebugPortInstance ();\r | |
47 | ASSERT (Instance != NULL);\r | |
48 | \r | |
49 | Instance->InNotify = TRUE;\r | |
50 | \r | |
51 | //\r | |
52 | // Reinitialize USB3 debug port with granted DMA buffer from IOMMU PPI.\r | |
53 | //\r | |
54 | InitializeUsbDebugHardware (Instance);\r | |
55 | \r | |
56 | //\r | |
57 | // Wait some time for host to be ready after re-initialization.\r | |
58 | //\r | |
59 | MicroSecondDelay (1000000);\r | |
60 | \r | |
61 | Instance->InNotify = FALSE;\r | |
62 | \r | |
63 | return EFI_SUCCESS;\r | |
64 | }\r | |
65 | \r | |
66 | EFI_PEI_NOTIFY_DESCRIPTOR mUsb3IoMmuPpiNotifyDesc = {\r | |
67 | (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
68 | &gEdkiiIoMmuPpiGuid,\r | |
69 | Usb3IoMmuPpiNotify\r | |
70 | };\r | |
71 | \r | |
72 | /**\r | |
73 | Allocates pages that are suitable for an OperationBusMasterCommonBuffer or\r | |
74 | OperationBusMasterCommonBuffer64 mapping.\r | |
75 | \r | |
76 | @param IoMmu Pointer to IOMMU PPI.\r | |
77 | @param Pages The number of pages to allocate.\r | |
78 | @param HostAddress A pointer to store the base system memory address of the\r | |
79 | allocated range.\r | |
80 | @param DeviceAddress The resulting map address for the bus master PCI controller to use to\r | |
81 | access the hosts HostAddress.\r | |
82 | @param Mapping A resulting value to pass to Unmap().\r | |
83 | \r | |
84 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
85 | @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are\r | |
86 | MEMORY_WRITE_COMBINE and MEMORY_CACHED.\r | |
87 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
88 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
89 | \r | |
90 | **/\r | |
91 | EFI_STATUS\r | |
92 | IoMmuAllocateBuffer (\r | |
93 | IN EDKII_IOMMU_PPI *IoMmu,\r | |
94 | IN UINTN Pages,\r | |
95 | OUT VOID **HostAddress,\r | |
96 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
97 | OUT VOID **Mapping\r | |
98 | )\r | |
99 | {\r | |
100 | EFI_STATUS Status;\r | |
101 | UINTN NumberOfBytes;\r | |
102 | \r | |
103 | *HostAddress = NULL;\r | |
104 | *DeviceAddress = 0;\r | |
105 | *Mapping = NULL;\r | |
106 | \r | |
107 | Status = IoMmu->AllocateBuffer (\r | |
108 | IoMmu,\r | |
109 | EfiBootServicesData,\r | |
110 | Pages,\r | |
111 | HostAddress,\r | |
112 | 0\r | |
113 | );\r | |
114 | if (EFI_ERROR (Status)) {\r | |
115 | return EFI_OUT_OF_RESOURCES;\r | |
116 | }\r | |
117 | \r | |
118 | NumberOfBytes = EFI_PAGES_TO_SIZE (Pages);\r | |
119 | Status = IoMmu->Map (\r | |
120 | IoMmu,\r | |
121 | EdkiiIoMmuOperationBusMasterCommonBuffer,\r | |
122 | *HostAddress,\r | |
123 | &NumberOfBytes,\r | |
124 | DeviceAddress,\r | |
125 | Mapping\r | |
126 | );\r | |
127 | if (EFI_ERROR (Status)) {\r | |
128 | IoMmu->FreeBuffer (IoMmu, Pages, *HostAddress);\r | |
129 | *HostAddress = NULL;\r | |
130 | return EFI_OUT_OF_RESOURCES;\r | |
131 | }\r | |
132 | Status = IoMmu->SetAttribute (\r | |
133 | IoMmu,\r | |
134 | *Mapping,\r | |
135 | EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE\r | |
136 | );\r | |
137 | if (EFI_ERROR (Status)) {\r | |
138 | IoMmu->Unmap (IoMmu, *Mapping);\r | |
139 | IoMmu->FreeBuffer (IoMmu, Pages, *HostAddress);\r | |
140 | *Mapping = NULL;\r | |
141 | *HostAddress = NULL;\r | |
142 | return Status;\r | |
143 | }\r | |
144 | \r | |
145 | return Status;\r | |
146 | }\r | |
147 | \r | |
148 | /**\r | |
149 | USB3 get IOMMU PPI.\r | |
150 | \r | |
151 | @return Pointer to IOMMU PPI.\r | |
152 | \r | |
153 | **/\r | |
154 | EDKII_IOMMU_PPI *\r | |
155 | Usb3GetIoMmu (\r | |
156 | VOID\r | |
157 | )\r | |
158 | {\r | |
159 | EFI_STATUS Status;\r | |
160 | EDKII_IOMMU_PPI *IoMmu;\r | |
161 | \r | |
162 | IoMmu = NULL;\r | |
163 | Status = PeiServicesLocatePpi (\r | |
164 | &gEdkiiIoMmuPpiGuid,\r | |
165 | 0,\r | |
166 | NULL,\r | |
167 | (VOID **) &IoMmu\r | |
168 | );\r | |
169 | if (!EFI_ERROR (Status) && (IoMmu != NULL)) {\r | |
170 | return IoMmu;\r | |
171 | }\r | |
172 | \r | |
173 | return NULL;\r | |
174 | }\r | |
175 | \r | |
176 | /**\r | |
177 | Return USB3 debug instance address.\r | |
178 | \r | |
179 | **/ \r | |
180 | USB3_DEBUG_PORT_HANDLE *\r | |
181 | GetUsb3DebugPortInstance (\r | |
182 | VOID\r | |
183 | )\r | |
184 | {\r | |
185 | USB3_DEBUG_PORT_HANDLE *Instance;\r | |
186 | EFI_PEI_HOB_POINTERS Hob;\r | |
187 | EFI_STATUS Status;\r | |
188 | \r | |
189 | Hob.Raw = GetFirstGuidHob (&gUsb3DbgGuid);\r | |
190 | if (Hob.Raw == NULL) {\r | |
191 | //\r | |
192 | // Save Instance into HOB\r | |
193 | //\r | |
194 | Instance = BuildGuidHob (\r | |
195 | &gUsb3DbgGuid,\r | |
196 | sizeof (USB3_DEBUG_PORT_HANDLE)\r | |
197 | );\r | |
198 | ASSERT (Instance != NULL);\r | |
199 | ZeroMem (Instance, sizeof (USB3_DEBUG_PORT_HANDLE));\r | |
200 | \r | |
201 | Instance->FromHob = TRUE;\r | |
202 | Instance->Initialized = USB3DBG_UNINITIALIZED;\r | |
203 | } else {\r | |
204 | Instance = GET_GUID_HOB_DATA (Hob.Guid);\r | |
205 | }\r | |
206 | \r | |
207 | if (!Instance->InNotify) {\r | |
208 | DiscoverInitializeUsbDebugPort (Instance);\r | |
209 | }\r | |
210 | \r | |
211 | if (Instance->Ready &&\r | |
212 | !Instance->PpiNotifyRegistered &&\r | |
213 | (Usb3GetIoMmu () == NULL)) {\r | |
214 | Status = PeiServicesNotifyPpi (&mUsb3IoMmuPpiNotifyDesc);\r | |
215 | ASSERT_EFI_ERROR (Status);\r | |
216 | Instance->PpiNotifyRegistered = TRUE;\r | |
217 | }\r | |
218 | \r | |
219 | return Instance;\r | |
220 | }\r | |
221 | \r | |
2cb6eabe EL |
222 | /**\r |
223 | Allocate aligned memory for XHC's usage.\r | |
224 | \r | |
de8373fa | 225 | @param BufferSize The size, in bytes, of the Buffer.\r |
2cb6eabe EL |
226 | \r |
227 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
228 | \r | |
229 | **/\r | |
230 | VOID*\r | |
231 | AllocateAlignBuffer (\r | |
232 | IN UINTN BufferSize\r | |
233 | )\r | |
234 | {\r | |
235 | VOID *Buf;\r | |
236 | EFI_PHYSICAL_ADDRESS Address;\r | |
237 | EFI_STATUS Status;\r | |
364f63c0 | 238 | VOID *MemoryDiscoveredPpi;\r |
de8373fa SZ |
239 | EDKII_IOMMU_PPI *IoMmu;\r |
240 | VOID *HostAddress;\r | |
241 | VOID *Mapping;\r | |
364f63c0 SZ |
242 | \r |
243 | Buf = NULL;\r | |
244 | \r | |
245 | //\r | |
246 | // Make sure the allocated memory is physical memory.\r | |
247 | //\r | |
248 | Status = PeiServicesLocatePpi (\r | |
249 | &gEfiPeiMemoryDiscoveredPpiGuid,\r | |
250 | 0,\r | |
251 | NULL,\r | |
252 | (VOID **) &MemoryDiscoveredPpi\r | |
253 | );\r | |
254 | if (!EFI_ERROR (Status)) {\r | |
de8373fa SZ |
255 | IoMmu = Usb3GetIoMmu ();\r |
256 | if (IoMmu != NULL) {\r | |
257 | Status = IoMmuAllocateBuffer (\r | |
258 | IoMmu,\r | |
259 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
260 | &HostAddress,\r | |
261 | &Address,\r | |
262 | &Mapping\r | |
263 | );\r | |
264 | if (!EFI_ERROR (Status)) {\r | |
265 | ASSERT (Address == ((EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress));\r | |
266 | Buf = (VOID *)(UINTN) Address;\r | |
267 | }\r | |
268 | } else {\r | |
269 | Status = PeiServicesAllocatePages (\r | |
270 | EfiACPIMemoryNVS,\r | |
271 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
272 | &Address\r | |
273 | );\r | |
274 | if (!EFI_ERROR (Status)) {\r | |
275 | Buf = (VOID *)(UINTN) Address;\r | |
276 | }\r | |
364f63c0 | 277 | }\r |
2cb6eabe EL |
278 | }\r |
279 | return Buf;\r | |
280 | }\r | |
281 | \r |