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93b5b853 | 1 | /** @file\r |
2 | Functions in this library instance make use of MMIO functions in IoLib to\r | |
3 | access memory mapped PCI configuration space.\r | |
4 | \r | |
5 | All assertions for I/O operations are handled in MMIO functions in the IoLib\r | |
6 | Library.\r | |
7 | \r | |
9095d37b | 8 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
9344f092 | 9 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
93b5b853 | 10 | \r |
11 | **/\r | |
12 | \r | |
13 | \r | |
14 | #include <PiDxe.h>\r | |
15 | \r | |
7c188740 | 16 | #include <Guid/EventGroup.h>\r |
17 | \r | |
93b5b853 | 18 | #include <Library/BaseLib.h>\r |
19 | #include <Library/PciExpressLib.h>\r | |
20 | #include <Library/IoLib.h>\r | |
21 | #include <Library/DebugLib.h>\r | |
22 | #include <Library/PcdLib.h>\r | |
23 | #include <Library/MemoryAllocationLib.h>\r | |
24 | #include <Library/UefiBootServicesTableLib.h>\r | |
25 | #include <Library/DxeServicesTableLib.h>\r | |
26 | #include <Library/UefiRuntimeLib.h>\r | |
27 | \r | |
28 | ///\r | |
29 | /// Define table for mapping PCI Express MMIO physical addresses to virtual addresses at OS runtime\r | |
30 | ///\r | |
31 | typedef struct {\r | |
32 | UINTN PhysicalAddress;\r | |
33 | UINTN VirtualAddress;\r | |
34 | } PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE;\r | |
35 | \r | |
36 | ///\r | |
37 | /// Set Virtual Address Map Event\r | |
38 | ///\r | |
39 | EFI_EVENT mDxeRuntimePciExpressLibVirtualNotifyEvent = NULL;\r | |
40 | \r | |
41 | ///\r | |
58380e9c | 42 | /// Module global that contains the base physical address of the PCI Express MMIO range.\r |
93b5b853 | 43 | ///\r |
44 | UINTN mDxeRuntimePciExpressLibPciExpressBaseAddress = 0;\r | |
45 | \r | |
46 | ///\r | |
58380e9c | 47 | /// The number of PCI devices that have been registered for runtime access.\r |
93b5b853 | 48 | ///\r |
49 | UINTN mDxeRuntimePciExpressLibNumberOfRuntimeRanges = 0;\r | |
50 | \r | |
51 | ///\r | |
58380e9c | 52 | /// The table of PCI devices that have been registered for runtime access.\r |
93b5b853 | 53 | ///\r |
54 | PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE *mDxeRuntimePciExpressLibRegistrationTable = NULL;\r | |
55 | \r | |
56 | ///\r | |
58380e9c | 57 | /// The table index of the most recent virtual address lookup.\r |
93b5b853 | 58 | ///\r |
59 | UINTN mDxeRuntimePciExpressLibLastRuntimeRange = 0;\r | |
60 | \r | |
61 | \r | |
62 | /**\r | |
63 | Convert the physical PCI Express MMIO addresses for all registered PCI devices\r | |
64 | to virtual addresses.\r | |
65 | \r | |
58380e9c | 66 | @param[in] Event The event that is being processed.\r |
67 | @param[in] Context The Event Context.\r | |
93b5b853 | 68 | **/\r |
69 | VOID\r | |
70 | EFIAPI\r | |
71 | DxeRuntimePciExpressLibVirtualNotify (\r | |
72 | IN EFI_EVENT Event,\r | |
73 | IN VOID *Context\r | |
74 | )\r | |
75 | {\r | |
76 | UINTN Index;\r | |
77 | \r | |
78 | //\r | |
79 | // If there have been no runtime registrations, then just return\r | |
80 | //\r | |
81 | if (mDxeRuntimePciExpressLibRegistrationTable == NULL) {\r | |
82 | return;\r | |
83 | }\r | |
84 | \r | |
85 | //\r | |
86 | // Convert physical addresses associated with the set of registered PCI devices to\r | |
87 | // virtual addresses.\r | |
88 | //\r | |
89 | for (Index = 0; Index < mDxeRuntimePciExpressLibNumberOfRuntimeRanges; Index++) {\r | |
90 | EfiConvertPointer (0, (VOID **) &(mDxeRuntimePciExpressLibRegistrationTable[Index].VirtualAddress));\r | |
91 | }\r | |
92 | \r | |
93 | //\r | |
94 | // Convert table pointer that is allocated from EfiRuntimeServicesData to a virtual address.\r | |
95 | //\r | |
96 | EfiConvertPointer (0, (VOID **) &mDxeRuntimePciExpressLibRegistrationTable);\r | |
97 | }\r | |
98 | \r | |
99 | /**\r | |
9095d37b | 100 | The constructor function caches the PCI Express Base Address and creates a\r |
93b5b853 | 101 | Set Virtual Address Map event to convert physical address to virtual addresses.\r |
9095d37b | 102 | \r |
93b5b853 | 103 | @param ImageHandle The firmware allocated handle for the EFI image.\r |
104 | @param SystemTable A pointer to the EFI System Table.\r | |
9095d37b | 105 | \r |
93b5b853 | 106 | @retval EFI_SUCCESS The constructor completed successfully.\r |
107 | @retval Other value The constructor did not complete successfully.\r | |
108 | \r | |
109 | **/\r | |
110 | EFI_STATUS\r | |
111 | EFIAPI\r | |
112 | DxeRuntimePciExpressLibConstructor (\r | |
56733004 | 113 | IN EFI_HANDLE ImageHandle,\r |
114 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
93b5b853 | 115 | )\r |
116 | {\r | |
117 | EFI_STATUS Status;\r | |
118 | \r | |
119 | //\r | |
120 | // Cache the physical address of the PCI Express MMIO range into a module global variable\r | |
121 | //\r | |
122 | mDxeRuntimePciExpressLibPciExpressBaseAddress = (UINTN) PcdGet64 (PcdPciExpressBaseAddress);\r | |
123 | \r | |
124 | //\r | |
125 | // Register SetVirtualAddressMap () notify function\r | |
126 | //\r | |
df851da3 VC |
127 | Status = gBS->CreateEvent (\r |
128 | EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,\r | |
93b5b853 | 129 | TPL_NOTIFY,\r |
130 | DxeRuntimePciExpressLibVirtualNotify,\r | |
131 | NULL,\r | |
132 | &mDxeRuntimePciExpressLibVirtualNotifyEvent\r | |
133 | );\r | |
134 | ASSERT_EFI_ERROR (Status);\r | |
135 | \r | |
136 | return Status;\r | |
137 | }\r | |
138 | \r | |
139 | /**\r | |
9095d37b | 140 | The destructor function frees any allocated buffers and closes the Set Virtual\r |
93b5b853 | 141 | Address Map event.\r |
9095d37b | 142 | \r |
93b5b853 | 143 | @param ImageHandle The firmware allocated handle for the EFI image.\r |
144 | @param SystemTable A pointer to the EFI System Table.\r | |
9095d37b | 145 | \r |
93b5b853 | 146 | @retval EFI_SUCCESS The destructor completed successfully.\r |
147 | @retval Other value The destructor did not complete successfully.\r | |
148 | \r | |
149 | **/\r | |
150 | EFI_STATUS\r | |
151 | EFIAPI\r | |
152 | DxeRuntimePciExpressLibDestructor (\r | |
56733004 | 153 | IN EFI_HANDLE ImageHandle,\r |
154 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
93b5b853 | 155 | )\r |
156 | {\r | |
157 | EFI_STATUS Status;\r | |
158 | \r | |
159 | //\r | |
9095d37b | 160 | // If one or more PCI devices have been registered for runtime access, then\r |
93b5b853 | 161 | // free the registration table.\r |
162 | //\r | |
163 | if (mDxeRuntimePciExpressLibRegistrationTable != NULL) {\r | |
164 | FreePool (mDxeRuntimePciExpressLibRegistrationTable);\r | |
165 | }\r | |
166 | \r | |
167 | //\r | |
168 | // Close the Set Virtual Address Map event\r | |
169 | //\r | |
170 | Status = gBS->CloseEvent (mDxeRuntimePciExpressLibVirtualNotifyEvent);\r | |
171 | ASSERT_EFI_ERROR (Status);\r | |
172 | \r | |
173 | return Status;\r | |
174 | }\r | |
175 | \r | |
176 | /**\r | |
177 | Gets the base address of PCI Express.\r | |
9095d37b | 178 | \r |
93b5b853 | 179 | This internal functions retrieves PCI Express Base Address via a PCD entry\r |
180 | PcdPciExpressBaseAddress.\r | |
9095d37b | 181 | \r |
2fc59a00 | 182 | @param Address The address that encodes the PCI Bus, Device, Function and Register.\r |
8f0dd97e | 183 | @return The base address of PCI Express.\r |
93b5b853 | 184 | \r |
185 | **/\r | |
186 | UINTN\r | |
187 | GetPciExpressAddress (\r | |
188 | IN UINTN Address\r | |
189 | )\r | |
190 | {\r | |
191 | UINTN Index;\r | |
192 | \r | |
193 | //\r | |
194 | // Make sure Address is valid\r | |
195 | //\r | |
196 | ASSERT (((Address) & ~0xfffffff) == 0);\r | |
197 | \r | |
198 | //\r | |
199 | // Convert Address to a physical address in the MMIO PCI Express range\r | |
200 | //\r | |
201 | Address += mDxeRuntimePciExpressLibPciExpressBaseAddress;\r | |
202 | \r | |
203 | //\r | |
204 | // If SetVirtualAddressMap() has not been called, then just return the physical address\r | |
205 | //\r | |
206 | if (!EfiGoneVirtual ()) {\r | |
207 | return Address;\r | |
208 | }\r | |
209 | \r | |
210 | //\r | |
211 | // See if there is a physical address match at the exact same index as the last address match\r | |
212 | //\r | |
687add70 | 213 | if (mDxeRuntimePciExpressLibRegistrationTable[mDxeRuntimePciExpressLibLastRuntimeRange].PhysicalAddress == (Address & (~0x00000fff))) {\r |
93b5b853 | 214 | //\r |
215 | // Convert the physical address to a virtual address and return the virtual address\r | |
216 | //\r | |
217 | return (Address & 0x00000fff) + mDxeRuntimePciExpressLibRegistrationTable[mDxeRuntimePciExpressLibLastRuntimeRange].VirtualAddress;\r | |
218 | }\r | |
219 | \r | |
220 | //\r | |
d908a2d6 | 221 | // Search the entire table for a physical address match\r |
93b5b853 | 222 | //\r |
223 | for (Index = 0; Index < mDxeRuntimePciExpressLibNumberOfRuntimeRanges; Index++) {\r | |
687add70 | 224 | if (mDxeRuntimePciExpressLibRegistrationTable[Index].PhysicalAddress == (Address & (~0x00000fff))) {\r |
93b5b853 | 225 | //\r |
226 | // Cache the matching index value\r | |
227 | //\r | |
228 | mDxeRuntimePciExpressLibLastRuntimeRange = Index;\r | |
229 | //\r | |
230 | // Convert the physical address to a virtual address and return the virtual address\r | |
231 | //\r | |
232 | return (Address & 0x00000fff) + mDxeRuntimePciExpressLibRegistrationTable[Index].VirtualAddress;\r | |
233 | }\r | |
234 | }\r | |
235 | \r | |
236 | //\r | |
237 | // No match was found. This is a critical error at OS runtime, so ASSERT() and force a breakpoint.\r | |
238 | //\r | |
239 | ASSERT (FALSE);\r | |
240 | CpuBreakpoint();\r | |
241 | \r | |
242 | //\r | |
9095d37b | 243 | // Return the physical address\r |
93b5b853 | 244 | //\r |
245 | return Address;\r | |
246 | }\r | |
247 | \r | |
248 | /**\r | |
9095d37b | 249 | Registers a PCI device so PCI configuration registers may be accessed after\r |
93b5b853 | 250 | SetVirtualAddressMap().\r |
9095d37b LG |
251 | \r |
252 | Registers the PCI device specified by Address so all the PCI configuration\r | |
253 | registers associated with that PCI device may be accessed after SetVirtualAddressMap()\r | |
518db1d9 | 254 | is called.\r |
9095d37b | 255 | \r |
93b5b853 | 256 | If Address > 0x0FFFFFFF, then ASSERT().\r |
257 | \r | |
2fc59a00 | 258 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 259 | Register.\r |
9095d37b | 260 | \r |
93b5b853 | 261 | @retval RETURN_SUCCESS The PCI device was registered for runtime access.\r |
9095d37b | 262 | @retval RETURN_UNSUPPORTED An attempt was made to call this function\r |
93b5b853 | 263 | after ExitBootServices().\r |
264 | @retval RETURN_UNSUPPORTED The resources required to access the PCI device\r | |
265 | at runtime could not be mapped.\r | |
266 | @retval RETURN_OUT_OF_RESOURCES There are not enough resources available to\r | |
267 | complete the registration.\r | |
268 | \r | |
269 | **/\r | |
270 | RETURN_STATUS\r | |
271 | EFIAPI\r | |
272 | PciExpressRegisterForRuntimeAccess (\r | |
273 | IN UINTN Address\r | |
274 | )\r | |
275 | {\r | |
276 | EFI_STATUS Status;\r | |
277 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;\r | |
278 | UINTN Index;\r | |
279 | VOID *NewTable;\r | |
280 | \r | |
281 | //\r | |
282 | // Return an error if this function is called after ExitBootServices().\r | |
283 | //\r | |
284 | if (EfiAtRuntime ()) {\r | |
285 | return RETURN_UNSUPPORTED;\r | |
286 | }\r | |
287 | \r | |
288 | //\r | |
289 | // Make sure Address is valid\r | |
290 | //\r | |
291 | ASSERT (((Address) & ~0xfffffff) == 0);\r | |
292 | \r | |
293 | //\r | |
294 | // Convert Address to a physical address in the MMIO PCI Express range\r | |
295 | // at the beginning of the PCI Configuration header for the specified\r | |
296 | // PCI Bus/Dev/Func\r | |
297 | //\r | |
298 | Address = GetPciExpressAddress (Address & 0x0ffff000);\r | |
299 | \r | |
300 | //\r | |
301 | // See if Address has already been registerd for runtime access\r | |
302 | //\r | |
303 | for (Index = 0; Index < mDxeRuntimePciExpressLibNumberOfRuntimeRanges; Index++) {\r | |
304 | if (mDxeRuntimePciExpressLibRegistrationTable[Index].PhysicalAddress == Address) {\r | |
305 | return RETURN_SUCCESS;\r | |
306 | }\r | |
307 | }\r | |
308 | \r | |
309 | //\r | |
310 | // Get the GCD Memory Descriptor for the PCI Express Bus/Dev/Func specified by Address\r | |
311 | //\r | |
312 | Status = gDS->GetMemorySpaceDescriptor (Address, &Descriptor);\r | |
313 | if (EFI_ERROR (Status)) {\r | |
314 | return RETURN_UNSUPPORTED;\r | |
315 | }\r | |
316 | \r | |
317 | //\r | |
318 | // Mark the 4KB region for the PCI Express Bus/Dev/Func as EFI_RUNTIME_MEMORY so the OS\r | |
319 | // will allocate a virtual address range for the 4KB PCI Configuration Header.\r | |
320 | //\r | |
321 | Status = gDS->SetMemorySpaceAttributes (Address, 0x1000, Descriptor.Attributes | EFI_MEMORY_RUNTIME);\r | |
322 | if (EFI_ERROR (Status)) {\r | |
323 | return RETURN_UNSUPPORTED;\r | |
324 | }\r | |
325 | \r | |
326 | //\r | |
327 | // Grow the size of the registration table\r | |
328 | //\r | |
329 | NewTable = ReallocateRuntimePool (\r | |
9095d37b LG |
330 | (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 0) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE),\r |
331 | (mDxeRuntimePciExpressLibNumberOfRuntimeRanges + 1) * sizeof (PCI_EXPRESS_RUNTIME_REGISTRATION_TABLE),\r | |
93b5b853 | 332 | mDxeRuntimePciExpressLibRegistrationTable\r |
333 | );\r | |
334 | if (NewTable == NULL) {\r | |
335 | return RETURN_OUT_OF_RESOURCES;\r | |
336 | }\r | |
337 | mDxeRuntimePciExpressLibRegistrationTable = NewTable;\r | |
338 | mDxeRuntimePciExpressLibRegistrationTable[mDxeRuntimePciExpressLibNumberOfRuntimeRanges].PhysicalAddress = Address;\r | |
339 | mDxeRuntimePciExpressLibRegistrationTable[mDxeRuntimePciExpressLibNumberOfRuntimeRanges].VirtualAddress = Address;\r | |
340 | mDxeRuntimePciExpressLibNumberOfRuntimeRanges++;\r | |
341 | \r | |
342 | return RETURN_SUCCESS;\r | |
343 | }\r | |
344 | \r | |
345 | \r | |
346 | /**\r | |
347 | Reads an 8-bit PCI configuration register.\r | |
348 | \r | |
349 | Reads and returns the 8-bit PCI configuration register specified by Address.\r | |
350 | This function must guarantee that all PCI read and write operations are\r | |
351 | serialized.\r | |
352 | \r | |
353 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
354 | \r | |
2fc59a00 | 355 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 356 | Register.\r |
357 | \r | |
358 | @return The read value from the PCI configuration register.\r | |
359 | \r | |
360 | **/\r | |
361 | UINT8\r | |
362 | EFIAPI\r | |
363 | PciExpressRead8 (\r | |
364 | IN UINTN Address\r | |
365 | )\r | |
366 | {\r | |
367 | return MmioRead8 (GetPciExpressAddress (Address));\r | |
368 | }\r | |
369 | \r | |
370 | /**\r | |
371 | Writes an 8-bit PCI configuration register.\r | |
372 | \r | |
373 | Writes the 8-bit PCI configuration register specified by Address with the\r | |
374 | value specified by Value. Value is returned. This function must guarantee\r | |
375 | that all PCI read and write operations are serialized.\r | |
376 | \r | |
377 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
378 | \r | |
2fc59a00 | 379 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 380 | Register.\r |
381 | @param Value The value to write.\r | |
382 | \r | |
383 | @return The value written to the PCI configuration register.\r | |
384 | \r | |
385 | **/\r | |
386 | UINT8\r | |
387 | EFIAPI\r | |
388 | PciExpressWrite8 (\r | |
389 | IN UINTN Address,\r | |
390 | IN UINT8 Value\r | |
391 | )\r | |
392 | {\r | |
393 | return MmioWrite8 (GetPciExpressAddress (Address), Value);\r | |
394 | }\r | |
395 | \r | |
396 | /**\r | |
62991af2 | 397 | Performs a bitwise OR of an 8-bit PCI configuration register with\r |
93b5b853 | 398 | an 8-bit value.\r |
399 | \r | |
400 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 401 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 402 | OrData, and writes the result to the 8-bit PCI configuration register\r |
403 | specified by Address. The value written to the PCI configuration register is\r | |
404 | returned. This function must guarantee that all PCI read and write operations\r | |
405 | are serialized.\r | |
406 | \r | |
407 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
408 | \r | |
2fc59a00 | 409 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 410 | Register.\r |
411 | @param OrData The value to OR with the PCI configuration register.\r | |
412 | \r | |
413 | @return The value written back to the PCI configuration register.\r | |
414 | \r | |
415 | **/\r | |
416 | UINT8\r | |
417 | EFIAPI\r | |
418 | PciExpressOr8 (\r | |
419 | IN UINTN Address,\r | |
420 | IN UINT8 OrData\r | |
421 | )\r | |
422 | {\r | |
423 | return MmioOr8 (GetPciExpressAddress (Address), OrData);\r | |
424 | }\r | |
425 | \r | |
426 | /**\r | |
427 | Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit\r | |
428 | value.\r | |
429 | \r | |
430 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
431 | bitwise AND between the read result and the value specified by AndData, and\r | |
432 | writes the result to the 8-bit PCI configuration register specified by\r | |
433 | Address. The value written to the PCI configuration register is returned.\r | |
434 | This function must guarantee that all PCI read and write operations are\r | |
435 | serialized.\r | |
436 | \r | |
437 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
438 | \r | |
2fc59a00 | 439 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 440 | Register.\r |
441 | @param AndData The value to AND with the PCI configuration register.\r | |
442 | \r | |
443 | @return The value written back to the PCI configuration register.\r | |
444 | \r | |
445 | **/\r | |
446 | UINT8\r | |
447 | EFIAPI\r | |
448 | PciExpressAnd8 (\r | |
449 | IN UINTN Address,\r | |
450 | IN UINT8 AndData\r | |
451 | )\r | |
452 | {\r | |
453 | return MmioAnd8 (GetPciExpressAddress (Address), AndData);\r | |
454 | }\r | |
455 | \r | |
456 | /**\r | |
457 | Performs a bitwise AND of an 8-bit PCI configuration register with an 8-bit\r | |
62991af2 | 458 | value, followed a bitwise OR with another 8-bit value.\r |
93b5b853 | 459 | \r |
460 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
461 | bitwise AND between the read result and the value specified by AndData,\r | |
62991af2 | 462 | performs a bitwise OR between the result of the AND operation and\r |
93b5b853 | 463 | the value specified by OrData, and writes the result to the 8-bit PCI\r |
464 | configuration register specified by Address. The value written to the PCI\r | |
465 | configuration register is returned. This function must guarantee that all PCI\r | |
466 | read and write operations are serialized.\r | |
467 | \r | |
468 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
469 | \r | |
2fc59a00 | 470 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 471 | Register.\r |
472 | @param AndData The value to AND with the PCI configuration register.\r | |
473 | @param OrData The value to OR with the result of the AND operation.\r | |
474 | \r | |
475 | @return The value written back to the PCI configuration register.\r | |
476 | \r | |
477 | **/\r | |
478 | UINT8\r | |
479 | EFIAPI\r | |
480 | PciExpressAndThenOr8 (\r | |
481 | IN UINTN Address,\r | |
482 | IN UINT8 AndData,\r | |
483 | IN UINT8 OrData\r | |
484 | )\r | |
485 | {\r | |
486 | return MmioAndThenOr8 (\r | |
487 | GetPciExpressAddress (Address),\r | |
488 | AndData,\r | |
489 | OrData\r | |
490 | );\r | |
491 | }\r | |
492 | \r | |
493 | /**\r | |
494 | Reads a bit field of a PCI configuration register.\r | |
495 | \r | |
496 | Reads the bit field in an 8-bit PCI configuration register. The bit field is\r | |
497 | specified by the StartBit and the EndBit. The value of the bit field is\r | |
498 | returned.\r | |
499 | \r | |
500 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
501 | If StartBit is greater than 7, then ASSERT().\r | |
502 | If EndBit is greater than 7, then ASSERT().\r | |
503 | If EndBit is less than StartBit, then ASSERT().\r | |
504 | \r | |
2fc59a00 | 505 | @param Address The PCI configuration register to read.\r |
93b5b853 | 506 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
507 | Range 0..7.\r | |
508 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
509 | Range 0..7.\r | |
510 | \r | |
511 | @return The value of the bit field read from the PCI configuration register.\r | |
512 | \r | |
513 | **/\r | |
514 | UINT8\r | |
515 | EFIAPI\r | |
516 | PciExpressBitFieldRead8 (\r | |
517 | IN UINTN Address,\r | |
518 | IN UINTN StartBit,\r | |
519 | IN UINTN EndBit\r | |
520 | )\r | |
521 | {\r | |
522 | return MmioBitFieldRead8 (\r | |
523 | GetPciExpressAddress (Address),\r | |
524 | StartBit,\r | |
525 | EndBit\r | |
526 | );\r | |
527 | }\r | |
528 | \r | |
529 | /**\r | |
530 | Writes a bit field to a PCI configuration register.\r | |
531 | \r | |
532 | Writes Value to the bit field of the PCI configuration register. The bit\r | |
533 | field is specified by the StartBit and the EndBit. All other bits in the\r | |
534 | destination PCI configuration register are preserved. The new value of the\r | |
535 | 8-bit register is returned.\r | |
536 | \r | |
537 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
538 | If StartBit is greater than 7, then ASSERT().\r | |
539 | If EndBit is greater than 7, then ASSERT().\r | |
540 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 541 | If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 542 | \r |
2fc59a00 | 543 | @param Address The PCI configuration register to write.\r |
93b5b853 | 544 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
545 | Range 0..7.\r | |
546 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
547 | Range 0..7.\r | |
2fc59a00 | 548 | @param Value The new value of the bit field.\r |
93b5b853 | 549 | \r |
550 | @return The value written back to the PCI configuration register.\r | |
551 | \r | |
552 | **/\r | |
553 | UINT8\r | |
554 | EFIAPI\r | |
555 | PciExpressBitFieldWrite8 (\r | |
556 | IN UINTN Address,\r | |
557 | IN UINTN StartBit,\r | |
558 | IN UINTN EndBit,\r | |
559 | IN UINT8 Value\r | |
560 | )\r | |
561 | {\r | |
562 | return MmioBitFieldWrite8 (\r | |
563 | GetPciExpressAddress (Address),\r | |
564 | StartBit,\r | |
565 | EndBit,\r | |
566 | Value\r | |
567 | );\r | |
568 | }\r | |
569 | \r | |
570 | /**\r | |
571 | Reads a bit field in an 8-bit PCI configuration, performs a bitwise OR, and\r | |
572 | writes the result back to the bit field in the 8-bit port.\r | |
573 | \r | |
574 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 575 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 576 | OrData, and writes the result to the 8-bit PCI configuration register\r |
577 | specified by Address. The value written to the PCI configuration register is\r | |
578 | returned. This function must guarantee that all PCI read and write operations\r | |
579 | are serialized. Extra left bits in OrData are stripped.\r | |
580 | \r | |
581 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
582 | If StartBit is greater than 7, then ASSERT().\r | |
583 | If EndBit is greater than 7, then ASSERT().\r | |
584 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 585 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 586 | \r |
2fc59a00 | 587 | @param Address The PCI configuration register to write.\r |
93b5b853 | 588 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
589 | Range 0..7.\r | |
590 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
591 | Range 0..7.\r | |
592 | @param OrData The value to OR with the PCI configuration register.\r | |
593 | \r | |
594 | @return The value written back to the PCI configuration register.\r | |
595 | \r | |
596 | **/\r | |
597 | UINT8\r | |
598 | EFIAPI\r | |
599 | PciExpressBitFieldOr8 (\r | |
600 | IN UINTN Address,\r | |
601 | IN UINTN StartBit,\r | |
602 | IN UINTN EndBit,\r | |
603 | IN UINT8 OrData\r | |
604 | )\r | |
605 | {\r | |
606 | return MmioBitFieldOr8 (\r | |
607 | GetPciExpressAddress (Address),\r | |
608 | StartBit,\r | |
609 | EndBit,\r | |
610 | OrData\r | |
611 | );\r | |
612 | }\r | |
613 | \r | |
614 | /**\r | |
615 | Reads a bit field in an 8-bit PCI configuration register, performs a bitwise\r | |
616 | AND, and writes the result back to the bit field in the 8-bit register.\r | |
617 | \r | |
618 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
619 | bitwise AND between the read result and the value specified by AndData, and\r | |
620 | writes the result to the 8-bit PCI configuration register specified by\r | |
621 | Address. The value written to the PCI configuration register is returned.\r | |
622 | This function must guarantee that all PCI read and write operations are\r | |
623 | serialized. Extra left bits in AndData are stripped.\r | |
624 | \r | |
625 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
626 | If StartBit is greater than 7, then ASSERT().\r | |
627 | If EndBit is greater than 7, then ASSERT().\r | |
628 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 629 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 630 | \r |
2fc59a00 | 631 | @param Address The PCI configuration register to write.\r |
93b5b853 | 632 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
633 | Range 0..7.\r | |
634 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
635 | Range 0..7.\r | |
636 | @param AndData The value to AND with the PCI configuration register.\r | |
637 | \r | |
638 | @return The value written back to the PCI configuration register.\r | |
639 | \r | |
640 | **/\r | |
641 | UINT8\r | |
642 | EFIAPI\r | |
643 | PciExpressBitFieldAnd8 (\r | |
644 | IN UINTN Address,\r | |
645 | IN UINTN StartBit,\r | |
646 | IN UINTN EndBit,\r | |
647 | IN UINT8 AndData\r | |
648 | )\r | |
649 | {\r | |
650 | return MmioBitFieldAnd8 (\r | |
651 | GetPciExpressAddress (Address),\r | |
652 | StartBit,\r | |
653 | EndBit,\r | |
654 | AndData\r | |
655 | );\r | |
656 | }\r | |
657 | \r | |
658 | /**\r | |
659 | Reads a bit field in an 8-bit port, performs a bitwise AND followed by a\r | |
62991af2 | 660 | bitwise OR, and writes the result back to the bit field in the\r |
93b5b853 | 661 | 8-bit port.\r |
662 | \r | |
663 | Reads the 8-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 664 | bitwise AND followed by a bitwise OR between the read result and\r |
93b5b853 | 665 | the value specified by AndData, and writes the result to the 8-bit PCI\r |
666 | configuration register specified by Address. The value written to the PCI\r | |
667 | configuration register is returned. This function must guarantee that all PCI\r | |
668 | read and write operations are serialized. Extra left bits in both AndData and\r | |
669 | OrData are stripped.\r | |
670 | \r | |
671 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
672 | If StartBit is greater than 7, then ASSERT().\r | |
673 | If EndBit is greater than 7, then ASSERT().\r | |
674 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 LG |
675 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
676 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r | |
93b5b853 | 677 | \r |
2fc59a00 | 678 | @param Address The PCI configuration register to write.\r |
93b5b853 | 679 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
680 | Range 0..7.\r | |
681 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
682 | Range 0..7.\r | |
683 | @param AndData The value to AND with the PCI configuration register.\r | |
684 | @param OrData The value to OR with the result of the AND operation.\r | |
685 | \r | |
686 | @return The value written back to the PCI configuration register.\r | |
687 | \r | |
688 | **/\r | |
689 | UINT8\r | |
690 | EFIAPI\r | |
691 | PciExpressBitFieldAndThenOr8 (\r | |
692 | IN UINTN Address,\r | |
693 | IN UINTN StartBit,\r | |
694 | IN UINTN EndBit,\r | |
695 | IN UINT8 AndData,\r | |
696 | IN UINT8 OrData\r | |
697 | )\r | |
698 | {\r | |
699 | return MmioBitFieldAndThenOr8 (\r | |
700 | GetPciExpressAddress (Address),\r | |
701 | StartBit,\r | |
702 | EndBit,\r | |
703 | AndData,\r | |
704 | OrData\r | |
705 | );\r | |
706 | }\r | |
707 | \r | |
708 | /**\r | |
709 | Reads a 16-bit PCI configuration register.\r | |
710 | \r | |
711 | Reads and returns the 16-bit PCI configuration register specified by Address.\r | |
712 | This function must guarantee that all PCI read and write operations are\r | |
713 | serialized.\r | |
714 | \r | |
715 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
716 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
717 | \r | |
2fc59a00 | 718 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 719 | Register.\r |
720 | \r | |
721 | @return The read value from the PCI configuration register.\r | |
722 | \r | |
723 | **/\r | |
724 | UINT16\r | |
725 | EFIAPI\r | |
726 | PciExpressRead16 (\r | |
727 | IN UINTN Address\r | |
728 | )\r | |
729 | {\r | |
730 | return MmioRead16 (GetPciExpressAddress (Address));\r | |
731 | }\r | |
732 | \r | |
733 | /**\r | |
734 | Writes a 16-bit PCI configuration register.\r | |
735 | \r | |
736 | Writes the 16-bit PCI configuration register specified by Address with the\r | |
737 | value specified by Value. Value is returned. This function must guarantee\r | |
738 | that all PCI read and write operations are serialized.\r | |
739 | \r | |
740 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
741 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
742 | \r | |
2fc59a00 | 743 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 744 | Register.\r |
745 | @param Value The value to write.\r | |
746 | \r | |
747 | @return The value written to the PCI configuration register.\r | |
748 | \r | |
749 | **/\r | |
750 | UINT16\r | |
751 | EFIAPI\r | |
752 | PciExpressWrite16 (\r | |
753 | IN UINTN Address,\r | |
754 | IN UINT16 Value\r | |
755 | )\r | |
756 | {\r | |
757 | return MmioWrite16 (GetPciExpressAddress (Address), Value);\r | |
758 | }\r | |
759 | \r | |
760 | /**\r | |
62991af2 | 761 | Performs a bitwise OR of a 16-bit PCI configuration register with\r |
93b5b853 | 762 | a 16-bit value.\r |
763 | \r | |
764 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 765 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 766 | OrData, and writes the result to the 16-bit PCI configuration register\r |
767 | specified by Address. The value written to the PCI configuration register is\r | |
768 | returned. This function must guarantee that all PCI read and write operations\r | |
769 | are serialized.\r | |
770 | \r | |
771 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
772 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
773 | \r | |
2fc59a00 | 774 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 775 | Register.\r |
776 | @param OrData The value to OR with the PCI configuration register.\r | |
777 | \r | |
778 | @return The value written back to the PCI configuration register.\r | |
779 | \r | |
780 | **/\r | |
781 | UINT16\r | |
782 | EFIAPI\r | |
783 | PciExpressOr16 (\r | |
784 | IN UINTN Address,\r | |
785 | IN UINT16 OrData\r | |
786 | )\r | |
787 | {\r | |
788 | return MmioOr16 (GetPciExpressAddress (Address), OrData);\r | |
789 | }\r | |
790 | \r | |
791 | /**\r | |
792 | Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit\r | |
793 | value.\r | |
794 | \r | |
795 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
796 | bitwise AND between the read result and the value specified by AndData, and\r | |
797 | writes the result to the 16-bit PCI configuration register specified by\r | |
798 | Address. The value written to the PCI configuration register is returned.\r | |
799 | This function must guarantee that all PCI read and write operations are\r | |
800 | serialized.\r | |
801 | \r | |
802 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
803 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
804 | \r | |
2fc59a00 | 805 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 806 | Register.\r |
807 | @param AndData The value to AND with the PCI configuration register.\r | |
808 | \r | |
809 | @return The value written back to the PCI configuration register.\r | |
810 | \r | |
811 | **/\r | |
812 | UINT16\r | |
813 | EFIAPI\r | |
814 | PciExpressAnd16 (\r | |
815 | IN UINTN Address,\r | |
816 | IN UINT16 AndData\r | |
817 | )\r | |
818 | {\r | |
819 | return MmioAnd16 (GetPciExpressAddress (Address), AndData);\r | |
820 | }\r | |
821 | \r | |
822 | /**\r | |
823 | Performs a bitwise AND of a 16-bit PCI configuration register with a 16-bit\r | |
62991af2 | 824 | value, followed a bitwise OR with another 16-bit value.\r |
93b5b853 | 825 | \r |
826 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
827 | bitwise AND between the read result and the value specified by AndData,\r | |
62991af2 | 828 | performs a bitwise OR between the result of the AND operation and\r |
93b5b853 | 829 | the value specified by OrData, and writes the result to the 16-bit PCI\r |
830 | configuration register specified by Address. The value written to the PCI\r | |
831 | configuration register is returned. This function must guarantee that all PCI\r | |
832 | read and write operations are serialized.\r | |
833 | \r | |
834 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
835 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
836 | \r | |
2fc59a00 | 837 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 838 | Register.\r |
839 | @param AndData The value to AND with the PCI configuration register.\r | |
840 | @param OrData The value to OR with the result of the AND operation.\r | |
841 | \r | |
842 | @return The value written back to the PCI configuration register.\r | |
843 | \r | |
844 | **/\r | |
845 | UINT16\r | |
846 | EFIAPI\r | |
847 | PciExpressAndThenOr16 (\r | |
848 | IN UINTN Address,\r | |
849 | IN UINT16 AndData,\r | |
850 | IN UINT16 OrData\r | |
851 | )\r | |
852 | {\r | |
853 | return MmioAndThenOr16 (\r | |
854 | GetPciExpressAddress (Address),\r | |
855 | AndData,\r | |
856 | OrData\r | |
857 | );\r | |
858 | }\r | |
859 | \r | |
860 | /**\r | |
861 | Reads a bit field of a PCI configuration register.\r | |
862 | \r | |
863 | Reads the bit field in a 16-bit PCI configuration register. The bit field is\r | |
864 | specified by the StartBit and the EndBit. The value of the bit field is\r | |
865 | returned.\r | |
866 | \r | |
867 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
868 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
869 | If StartBit is greater than 15, then ASSERT().\r | |
870 | If EndBit is greater than 15, then ASSERT().\r | |
871 | If EndBit is less than StartBit, then ASSERT().\r | |
872 | \r | |
2fc59a00 | 873 | @param Address The PCI configuration register to read.\r |
93b5b853 | 874 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
875 | Range 0..15.\r | |
876 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
877 | Range 0..15.\r | |
878 | \r | |
879 | @return The value of the bit field read from the PCI configuration register.\r | |
880 | \r | |
881 | **/\r | |
882 | UINT16\r | |
883 | EFIAPI\r | |
884 | PciExpressBitFieldRead16 (\r | |
885 | IN UINTN Address,\r | |
886 | IN UINTN StartBit,\r | |
887 | IN UINTN EndBit\r | |
888 | )\r | |
889 | {\r | |
890 | return MmioBitFieldRead16 (\r | |
891 | GetPciExpressAddress (Address),\r | |
892 | StartBit,\r | |
893 | EndBit\r | |
894 | );\r | |
895 | }\r | |
896 | \r | |
897 | /**\r | |
898 | Writes a bit field to a PCI configuration register.\r | |
899 | \r | |
900 | Writes Value to the bit field of the PCI configuration register. The bit\r | |
901 | field is specified by the StartBit and the EndBit. All other bits in the\r | |
902 | destination PCI configuration register are preserved. The new value of the\r | |
903 | 16-bit register is returned.\r | |
904 | \r | |
905 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
906 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
907 | If StartBit is greater than 15, then ASSERT().\r | |
908 | If EndBit is greater than 15, then ASSERT().\r | |
909 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 910 | If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 911 | \r |
2fc59a00 | 912 | @param Address The PCI configuration register to write.\r |
93b5b853 | 913 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
914 | Range 0..15.\r | |
915 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
916 | Range 0..15.\r | |
2fc59a00 | 917 | @param Value The new value of the bit field.\r |
93b5b853 | 918 | \r |
919 | @return The value written back to the PCI configuration register.\r | |
920 | \r | |
921 | **/\r | |
922 | UINT16\r | |
923 | EFIAPI\r | |
924 | PciExpressBitFieldWrite16 (\r | |
925 | IN UINTN Address,\r | |
926 | IN UINTN StartBit,\r | |
927 | IN UINTN EndBit,\r | |
928 | IN UINT16 Value\r | |
929 | )\r | |
930 | {\r | |
931 | return MmioBitFieldWrite16 (\r | |
932 | GetPciExpressAddress (Address),\r | |
933 | StartBit,\r | |
934 | EndBit,\r | |
935 | Value\r | |
936 | );\r | |
937 | }\r | |
938 | \r | |
939 | /**\r | |
940 | Reads a bit field in a 16-bit PCI configuration, performs a bitwise OR, and\r | |
941 | writes the result back to the bit field in the 16-bit port.\r | |
942 | \r | |
943 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 944 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 945 | OrData, and writes the result to the 16-bit PCI configuration register\r |
946 | specified by Address. The value written to the PCI configuration register is\r | |
947 | returned. This function must guarantee that all PCI read and write operations\r | |
948 | are serialized. Extra left bits in OrData are stripped.\r | |
949 | \r | |
950 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
951 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
952 | If StartBit is greater than 15, then ASSERT().\r | |
953 | If EndBit is greater than 15, then ASSERT().\r | |
954 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 955 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 956 | \r |
2fc59a00 | 957 | @param Address The PCI configuration register to write.\r |
93b5b853 | 958 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
959 | Range 0..15.\r | |
960 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
961 | Range 0..15.\r | |
962 | @param OrData The value to OR with the PCI configuration register.\r | |
963 | \r | |
964 | @return The value written back to the PCI configuration register.\r | |
965 | \r | |
966 | **/\r | |
967 | UINT16\r | |
968 | EFIAPI\r | |
969 | PciExpressBitFieldOr16 (\r | |
970 | IN UINTN Address,\r | |
971 | IN UINTN StartBit,\r | |
972 | IN UINTN EndBit,\r | |
973 | IN UINT16 OrData\r | |
974 | )\r | |
975 | {\r | |
976 | return MmioBitFieldOr16 (\r | |
977 | GetPciExpressAddress (Address),\r | |
978 | StartBit,\r | |
979 | EndBit,\r | |
980 | OrData\r | |
981 | );\r | |
982 | }\r | |
983 | \r | |
984 | /**\r | |
985 | Reads a bit field in a 16-bit PCI configuration register, performs a bitwise\r | |
986 | AND, and writes the result back to the bit field in the 16-bit register.\r | |
987 | \r | |
988 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
989 | bitwise AND between the read result and the value specified by AndData, and\r | |
990 | writes the result to the 16-bit PCI configuration register specified by\r | |
991 | Address. The value written to the PCI configuration register is returned.\r | |
992 | This function must guarantee that all PCI read and write operations are\r | |
993 | serialized. Extra left bits in AndData are stripped.\r | |
994 | \r | |
995 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
996 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
997 | If StartBit is greater than 15, then ASSERT().\r | |
998 | If EndBit is greater than 15, then ASSERT().\r | |
999 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 1000 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 1001 | \r |
2fc59a00 | 1002 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1003 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1004 | Range 0..15.\r | |
1005 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1006 | Range 0..15.\r | |
1007 | @param AndData The value to AND with the PCI configuration register.\r | |
1008 | \r | |
1009 | @return The value written back to the PCI configuration register.\r | |
1010 | \r | |
1011 | **/\r | |
1012 | UINT16\r | |
1013 | EFIAPI\r | |
1014 | PciExpressBitFieldAnd16 (\r | |
1015 | IN UINTN Address,\r | |
1016 | IN UINTN StartBit,\r | |
1017 | IN UINTN EndBit,\r | |
1018 | IN UINT16 AndData\r | |
1019 | )\r | |
1020 | {\r | |
1021 | return MmioBitFieldAnd16 (\r | |
1022 | GetPciExpressAddress (Address),\r | |
1023 | StartBit,\r | |
1024 | EndBit,\r | |
1025 | AndData\r | |
1026 | );\r | |
1027 | }\r | |
1028 | \r | |
1029 | /**\r | |
1030 | Reads a bit field in a 16-bit port, performs a bitwise AND followed by a\r | |
62991af2 | 1031 | bitwise OR, and writes the result back to the bit field in the\r |
93b5b853 | 1032 | 16-bit port.\r |
1033 | \r | |
1034 | Reads the 16-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 1035 | bitwise AND followed by a bitwise OR between the read result and\r |
93b5b853 | 1036 | the value specified by AndData, and writes the result to the 16-bit PCI\r |
1037 | configuration register specified by Address. The value written to the PCI\r | |
1038 | configuration register is returned. This function must guarantee that all PCI\r | |
1039 | read and write operations are serialized. Extra left bits in both AndData and\r | |
1040 | OrData are stripped.\r | |
1041 | \r | |
1042 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1043 | If Address is not aligned on a 16-bit boundary, then ASSERT().\r | |
1044 | If StartBit is greater than 15, then ASSERT().\r | |
1045 | If EndBit is greater than 15, then ASSERT().\r | |
1046 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 LG |
1047 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
1048 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r | |
93b5b853 | 1049 | \r |
2fc59a00 | 1050 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1051 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1052 | Range 0..15.\r | |
1053 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1054 | Range 0..15.\r | |
1055 | @param AndData The value to AND with the PCI configuration register.\r | |
1056 | @param OrData The value to OR with the result of the AND operation.\r | |
1057 | \r | |
1058 | @return The value written back to the PCI configuration register.\r | |
1059 | \r | |
1060 | **/\r | |
1061 | UINT16\r | |
1062 | EFIAPI\r | |
1063 | PciExpressBitFieldAndThenOr16 (\r | |
1064 | IN UINTN Address,\r | |
1065 | IN UINTN StartBit,\r | |
1066 | IN UINTN EndBit,\r | |
1067 | IN UINT16 AndData,\r | |
1068 | IN UINT16 OrData\r | |
1069 | )\r | |
1070 | {\r | |
1071 | return MmioBitFieldAndThenOr16 (\r | |
1072 | GetPciExpressAddress (Address),\r | |
1073 | StartBit,\r | |
1074 | EndBit,\r | |
1075 | AndData,\r | |
1076 | OrData\r | |
1077 | );\r | |
1078 | }\r | |
1079 | \r | |
1080 | /**\r | |
1081 | Reads a 32-bit PCI configuration register.\r | |
1082 | \r | |
1083 | Reads and returns the 32-bit PCI configuration register specified by Address.\r | |
1084 | This function must guarantee that all PCI read and write operations are\r | |
1085 | serialized.\r | |
1086 | \r | |
1087 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1088 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1089 | \r | |
2fc59a00 | 1090 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 1091 | Register.\r |
1092 | \r | |
1093 | @return The read value from the PCI configuration register.\r | |
1094 | \r | |
1095 | **/\r | |
1096 | UINT32\r | |
1097 | EFIAPI\r | |
1098 | PciExpressRead32 (\r | |
1099 | IN UINTN Address\r | |
1100 | )\r | |
1101 | {\r | |
1102 | return MmioRead32 (GetPciExpressAddress (Address));\r | |
1103 | }\r | |
1104 | \r | |
1105 | /**\r | |
1106 | Writes a 32-bit PCI configuration register.\r | |
1107 | \r | |
1108 | Writes the 32-bit PCI configuration register specified by Address with the\r | |
1109 | value specified by Value. Value is returned. This function must guarantee\r | |
1110 | that all PCI read and write operations are serialized.\r | |
1111 | \r | |
1112 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1113 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1114 | \r | |
2fc59a00 | 1115 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 1116 | Register.\r |
1117 | @param Value The value to write.\r | |
1118 | \r | |
1119 | @return The value written to the PCI configuration register.\r | |
1120 | \r | |
1121 | **/\r | |
1122 | UINT32\r | |
1123 | EFIAPI\r | |
1124 | PciExpressWrite32 (\r | |
1125 | IN UINTN Address,\r | |
1126 | IN UINT32 Value\r | |
1127 | )\r | |
1128 | {\r | |
1129 | return MmioWrite32 (GetPciExpressAddress (Address), Value);\r | |
1130 | }\r | |
1131 | \r | |
1132 | /**\r | |
62991af2 | 1133 | Performs a bitwise OR of a 32-bit PCI configuration register with\r |
93b5b853 | 1134 | a 32-bit value.\r |
1135 | \r | |
1136 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 1137 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 1138 | OrData, and writes the result to the 32-bit PCI configuration register\r |
1139 | specified by Address. The value written to the PCI configuration register is\r | |
1140 | returned. This function must guarantee that all PCI read and write operations\r | |
1141 | are serialized.\r | |
1142 | \r | |
1143 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1144 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1145 | \r | |
2fc59a00 | 1146 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 1147 | Register.\r |
1148 | @param OrData The value to OR with the PCI configuration register.\r | |
1149 | \r | |
1150 | @return The value written back to the PCI configuration register.\r | |
1151 | \r | |
1152 | **/\r | |
1153 | UINT32\r | |
1154 | EFIAPI\r | |
1155 | PciExpressOr32 (\r | |
1156 | IN UINTN Address,\r | |
1157 | IN UINT32 OrData\r | |
1158 | )\r | |
1159 | {\r | |
1160 | return MmioOr32 (GetPciExpressAddress (Address), OrData);\r | |
1161 | }\r | |
1162 | \r | |
1163 | /**\r | |
1164 | Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit\r | |
1165 | value.\r | |
1166 | \r | |
1167 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
1168 | bitwise AND between the read result and the value specified by AndData, and\r | |
1169 | writes the result to the 32-bit PCI configuration register specified by\r | |
1170 | Address. The value written to the PCI configuration register is returned.\r | |
1171 | This function must guarantee that all PCI read and write operations are\r | |
1172 | serialized.\r | |
1173 | \r | |
1174 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1175 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1176 | \r | |
2fc59a00 | 1177 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 1178 | Register.\r |
1179 | @param AndData The value to AND with the PCI configuration register.\r | |
1180 | \r | |
1181 | @return The value written back to the PCI configuration register.\r | |
1182 | \r | |
1183 | **/\r | |
1184 | UINT32\r | |
1185 | EFIAPI\r | |
1186 | PciExpressAnd32 (\r | |
1187 | IN UINTN Address,\r | |
1188 | IN UINT32 AndData\r | |
1189 | )\r | |
1190 | {\r | |
1191 | return MmioAnd32 (GetPciExpressAddress (Address), AndData);\r | |
1192 | }\r | |
1193 | \r | |
1194 | /**\r | |
1195 | Performs a bitwise AND of a 32-bit PCI configuration register with a 32-bit\r | |
62991af2 | 1196 | value, followed a bitwise OR with another 32-bit value.\r |
93b5b853 | 1197 | \r |
1198 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
1199 | bitwise AND between the read result and the value specified by AndData,\r | |
62991af2 | 1200 | performs a bitwise OR between the result of the AND operation and\r |
93b5b853 | 1201 | the value specified by OrData, and writes the result to the 32-bit PCI\r |
1202 | configuration register specified by Address. The value written to the PCI\r | |
1203 | configuration register is returned. This function must guarantee that all PCI\r | |
1204 | read and write operations are serialized.\r | |
1205 | \r | |
1206 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1207 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1208 | \r | |
2fc59a00 | 1209 | @param Address The address that encodes the PCI Bus, Device, Function and\r |
93b5b853 | 1210 | Register.\r |
1211 | @param AndData The value to AND with the PCI configuration register.\r | |
1212 | @param OrData The value to OR with the result of the AND operation.\r | |
1213 | \r | |
1214 | @return The value written back to the PCI configuration register.\r | |
1215 | \r | |
1216 | **/\r | |
1217 | UINT32\r | |
1218 | EFIAPI\r | |
1219 | PciExpressAndThenOr32 (\r | |
1220 | IN UINTN Address,\r | |
1221 | IN UINT32 AndData,\r | |
1222 | IN UINT32 OrData\r | |
1223 | )\r | |
1224 | {\r | |
1225 | return MmioAndThenOr32 (\r | |
1226 | GetPciExpressAddress (Address),\r | |
1227 | AndData,\r | |
1228 | OrData\r | |
1229 | );\r | |
1230 | }\r | |
1231 | \r | |
1232 | /**\r | |
1233 | Reads a bit field of a PCI configuration register.\r | |
1234 | \r | |
1235 | Reads the bit field in a 32-bit PCI configuration register. The bit field is\r | |
1236 | specified by the StartBit and the EndBit. The value of the bit field is\r | |
1237 | returned.\r | |
1238 | \r | |
1239 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1240 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1241 | If StartBit is greater than 31, then ASSERT().\r | |
1242 | If EndBit is greater than 31, then ASSERT().\r | |
1243 | If EndBit is less than StartBit, then ASSERT().\r | |
1244 | \r | |
2fc59a00 | 1245 | @param Address The PCI configuration register to read.\r |
93b5b853 | 1246 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1247 | Range 0..31.\r | |
1248 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1249 | Range 0..31.\r | |
1250 | \r | |
1251 | @return The value of the bit field read from the PCI configuration register.\r | |
1252 | \r | |
1253 | **/\r | |
1254 | UINT32\r | |
1255 | EFIAPI\r | |
1256 | PciExpressBitFieldRead32 (\r | |
1257 | IN UINTN Address,\r | |
1258 | IN UINTN StartBit,\r | |
1259 | IN UINTN EndBit\r | |
1260 | )\r | |
1261 | {\r | |
1262 | return MmioBitFieldRead32 (\r | |
1263 | GetPciExpressAddress (Address),\r | |
1264 | StartBit,\r | |
1265 | EndBit\r | |
1266 | );\r | |
1267 | }\r | |
1268 | \r | |
1269 | /**\r | |
1270 | Writes a bit field to a PCI configuration register.\r | |
1271 | \r | |
1272 | Writes Value to the bit field of the PCI configuration register. The bit\r | |
1273 | field is specified by the StartBit and the EndBit. All other bits in the\r | |
1274 | destination PCI configuration register are preserved. The new value of the\r | |
1275 | 32-bit register is returned.\r | |
1276 | \r | |
1277 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1278 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1279 | If StartBit is greater than 31, then ASSERT().\r | |
1280 | If EndBit is greater than 31, then ASSERT().\r | |
1281 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 1282 | If Value is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 1283 | \r |
2fc59a00 | 1284 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1285 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1286 | Range 0..31.\r | |
1287 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1288 | Range 0..31.\r | |
2fc59a00 | 1289 | @param Value The new value of the bit field.\r |
93b5b853 | 1290 | \r |
1291 | @return The value written back to the PCI configuration register.\r | |
1292 | \r | |
1293 | **/\r | |
1294 | UINT32\r | |
1295 | EFIAPI\r | |
1296 | PciExpressBitFieldWrite32 (\r | |
1297 | IN UINTN Address,\r | |
1298 | IN UINTN StartBit,\r | |
1299 | IN UINTN EndBit,\r | |
1300 | IN UINT32 Value\r | |
1301 | )\r | |
1302 | {\r | |
1303 | return MmioBitFieldWrite32 (\r | |
1304 | GetPciExpressAddress (Address),\r | |
1305 | StartBit,\r | |
1306 | EndBit,\r | |
1307 | Value\r | |
1308 | );\r | |
1309 | }\r | |
1310 | \r | |
1311 | /**\r | |
1312 | Reads a bit field in a 32-bit PCI configuration, performs a bitwise OR, and\r | |
1313 | writes the result back to the bit field in the 32-bit port.\r | |
1314 | \r | |
1315 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 1316 | bitwise OR between the read result and the value specified by\r |
93b5b853 | 1317 | OrData, and writes the result to the 32-bit PCI configuration register\r |
1318 | specified by Address. The value written to the PCI configuration register is\r | |
1319 | returned. This function must guarantee that all PCI read and write operations\r | |
1320 | are serialized. Extra left bits in OrData are stripped.\r | |
1321 | \r | |
1322 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1323 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1324 | If StartBit is greater than 31, then ASSERT().\r | |
1325 | If EndBit is greater than 31, then ASSERT().\r | |
1326 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 1327 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 1328 | \r |
2fc59a00 | 1329 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1330 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1331 | Range 0..31.\r | |
1332 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1333 | Range 0..31.\r | |
1334 | @param OrData The value to OR with the PCI configuration register.\r | |
1335 | \r | |
1336 | @return The value written back to the PCI configuration register.\r | |
1337 | \r | |
1338 | **/\r | |
1339 | UINT32\r | |
1340 | EFIAPI\r | |
1341 | PciExpressBitFieldOr32 (\r | |
1342 | IN UINTN Address,\r | |
1343 | IN UINTN StartBit,\r | |
1344 | IN UINTN EndBit,\r | |
1345 | IN UINT32 OrData\r | |
1346 | )\r | |
1347 | {\r | |
1348 | return MmioBitFieldOr32 (\r | |
1349 | GetPciExpressAddress (Address),\r | |
1350 | StartBit,\r | |
1351 | EndBit,\r | |
1352 | OrData\r | |
1353 | );\r | |
1354 | }\r | |
1355 | \r | |
1356 | /**\r | |
1357 | Reads a bit field in a 32-bit PCI configuration register, performs a bitwise\r | |
1358 | AND, and writes the result back to the bit field in the 32-bit register.\r | |
1359 | \r | |
1360 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
1361 | bitwise AND between the read result and the value specified by AndData, and\r | |
1362 | writes the result to the 32-bit PCI configuration register specified by\r | |
1363 | Address. The value written to the PCI configuration register is returned.\r | |
1364 | This function must guarantee that all PCI read and write operations are\r | |
1365 | serialized. Extra left bits in AndData are stripped.\r | |
1366 | \r | |
1367 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1368 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1369 | If StartBit is greater than 31, then ASSERT().\r | |
1370 | If EndBit is greater than 31, then ASSERT().\r | |
1371 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 | 1372 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
93b5b853 | 1373 | \r |
2fc59a00 | 1374 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1375 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1376 | Range 0..31.\r | |
1377 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1378 | Range 0..31.\r | |
1379 | @param AndData The value to AND with the PCI configuration register.\r | |
1380 | \r | |
1381 | @return The value written back to the PCI configuration register.\r | |
1382 | \r | |
1383 | **/\r | |
1384 | UINT32\r | |
1385 | EFIAPI\r | |
1386 | PciExpressBitFieldAnd32 (\r | |
1387 | IN UINTN Address,\r | |
1388 | IN UINTN StartBit,\r | |
1389 | IN UINTN EndBit,\r | |
1390 | IN UINT32 AndData\r | |
1391 | )\r | |
1392 | {\r | |
1393 | return MmioBitFieldAnd32 (\r | |
1394 | GetPciExpressAddress (Address),\r | |
1395 | StartBit,\r | |
1396 | EndBit,\r | |
1397 | AndData\r | |
1398 | );\r | |
1399 | }\r | |
1400 | \r | |
1401 | /**\r | |
1402 | Reads a bit field in a 32-bit port, performs a bitwise AND followed by a\r | |
62991af2 | 1403 | bitwise OR, and writes the result back to the bit field in the\r |
93b5b853 | 1404 | 32-bit port.\r |
1405 | \r | |
1406 | Reads the 32-bit PCI configuration register specified by Address, performs a\r | |
62991af2 | 1407 | bitwise AND followed by a bitwise OR between the read result and\r |
93b5b853 | 1408 | the value specified by AndData, and writes the result to the 32-bit PCI\r |
1409 | configuration register specified by Address. The value written to the PCI\r | |
1410 | configuration register is returned. This function must guarantee that all PCI\r | |
1411 | read and write operations are serialized. Extra left bits in both AndData and\r | |
1412 | OrData are stripped.\r | |
1413 | \r | |
1414 | If Address > 0x0FFFFFFF, then ASSERT().\r | |
1415 | If Address is not aligned on a 32-bit boundary, then ASSERT().\r | |
1416 | If StartBit is greater than 31, then ASSERT().\r | |
1417 | If EndBit is greater than 31, then ASSERT().\r | |
1418 | If EndBit is less than StartBit, then ASSERT().\r | |
94952554 LG |
1419 | If AndData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r |
1420 | If OrData is larger than the bitmask value range specified by StartBit and EndBit, then ASSERT().\r | |
93b5b853 | 1421 | \r |
2fc59a00 | 1422 | @param Address The PCI configuration register to write.\r |
93b5b853 | 1423 | @param StartBit The ordinal of the least significant bit in the bit field.\r |
1424 | Range 0..31.\r | |
1425 | @param EndBit The ordinal of the most significant bit in the bit field.\r | |
1426 | Range 0..31.\r | |
1427 | @param AndData The value to AND with the PCI configuration register.\r | |
1428 | @param OrData The value to OR with the result of the AND operation.\r | |
1429 | \r | |
1430 | @return The value written back to the PCI configuration register.\r | |
1431 | \r | |
1432 | **/\r | |
1433 | UINT32\r | |
1434 | EFIAPI\r | |
1435 | PciExpressBitFieldAndThenOr32 (\r | |
1436 | IN UINTN Address,\r | |
1437 | IN UINTN StartBit,\r | |
1438 | IN UINTN EndBit,\r | |
1439 | IN UINT32 AndData,\r | |
1440 | IN UINT32 OrData\r | |
1441 | )\r | |
1442 | {\r | |
1443 | return MmioBitFieldAndThenOr32 (\r | |
1444 | GetPciExpressAddress (Address),\r | |
1445 | StartBit,\r | |
1446 | EndBit,\r | |
1447 | AndData,\r | |
1448 | OrData\r | |
1449 | );\r | |
1450 | }\r | |
1451 | \r | |
1452 | /**\r | |
1453 | Reads a range of PCI configuration registers into a caller supplied buffer.\r | |
1454 | \r | |
1455 | Reads the range of PCI configuration registers specified by StartAddress and\r | |
1456 | Size into the buffer specified by Buffer. This function only allows the PCI\r | |
1457 | configuration registers from a single PCI function to be read. Size is\r | |
1458 | returned. When possible 32-bit PCI configuration read cycles are used to read\r | |
1459 | from StartAdress to StartAddress + Size. Due to alignment restrictions, 8-bit\r | |
1460 | and 16-bit PCI configuration read cycles may be used at the beginning and the\r | |
1461 | end of the range.\r | |
1462 | \r | |
1463 | If StartAddress > 0x0FFFFFFF, then ASSERT().\r | |
1464 | If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().\r | |
1465 | If Size > 0 and Buffer is NULL, then ASSERT().\r | |
1466 | \r | |
2fc59a00 | 1467 | @param StartAddress The starting address that encodes the PCI Bus, Device,\r |
93b5b853 | 1468 | Function and Register.\r |
2fc59a00 | 1469 | @param Size The size in bytes of the transfer.\r |
1470 | @param Buffer The pointer to a buffer receiving the data read.\r | |
93b5b853 | 1471 | \r |
518db1d9 | 1472 | @return Size read data from StartAddress.\r |
93b5b853 | 1473 | \r |
1474 | **/\r | |
1475 | UINTN\r | |
1476 | EFIAPI\r | |
1477 | PciExpressReadBuffer (\r | |
1478 | IN UINTN StartAddress,\r | |
1479 | IN UINTN Size,\r | |
1480 | OUT VOID *Buffer\r | |
1481 | )\r | |
1482 | {\r | |
1483 | UINTN ReturnValue;\r | |
1484 | \r | |
d908a2d6 | 1485 | //\r |
1486 | // Make sure Address is valid\r | |
1487 | //\r | |
1488 | ASSERT (((StartAddress) & ~0xfffffff) == 0);\r | |
93b5b853 | 1489 | ASSERT (((StartAddress & 0xFFF) + Size) <= 0x1000);\r |
1490 | \r | |
1491 | if (Size == 0) {\r | |
1492 | return Size;\r | |
1493 | }\r | |
1494 | \r | |
1495 | ASSERT (Buffer != NULL);\r | |
1496 | \r | |
1497 | //\r | |
1498 | // Save Size for return\r | |
1499 | //\r | |
1500 | ReturnValue = Size;\r | |
1501 | \r | |
1502 | if ((StartAddress & 1) != 0) {\r | |
1503 | //\r | |
1504 | // Read a byte if StartAddress is byte aligned\r | |
1505 | //\r | |
1506 | *(volatile UINT8 *)Buffer = PciExpressRead8 (StartAddress);\r | |
1507 | StartAddress += sizeof (UINT8);\r | |
1508 | Size -= sizeof (UINT8);\r | |
1509 | Buffer = (UINT8*)Buffer + 1;\r | |
1510 | }\r | |
1511 | \r | |
1512 | if (Size >= sizeof (UINT16) && (StartAddress & 2) != 0) {\r | |
1513 | //\r | |
1514 | // Read a word if StartAddress is word aligned\r | |
1515 | //\r | |
1516 | WriteUnaligned16 ((UINT16 *) Buffer, (UINT16) PciExpressRead16 (StartAddress));\r | |
1517 | \r | |
1518 | StartAddress += sizeof (UINT16);\r | |
1519 | Size -= sizeof (UINT16);\r | |
1520 | Buffer = (UINT16*)Buffer + 1;\r | |
1521 | }\r | |
1522 | \r | |
1523 | while (Size >= sizeof (UINT32)) {\r | |
1524 | //\r | |
1525 | // Read as many double words as possible\r | |
1526 | //\r | |
1527 | WriteUnaligned32 ((UINT32 *) Buffer, (UINT32) PciExpressRead32 (StartAddress));\r | |
1528 | \r | |
1529 | StartAddress += sizeof (UINT32);\r | |
1530 | Size -= sizeof (UINT32);\r | |
1531 | Buffer = (UINT32*)Buffer + 1;\r | |
1532 | }\r | |
1533 | \r | |
1534 | if (Size >= sizeof (UINT16)) {\r | |
1535 | //\r | |
1536 | // Read the last remaining word if exist\r | |
1537 | //\r | |
1538 | WriteUnaligned16 ((UINT16 *) Buffer, (UINT16) PciExpressRead16 (StartAddress));\r | |
1539 | StartAddress += sizeof (UINT16);\r | |
1540 | Size -= sizeof (UINT16);\r | |
1541 | Buffer = (UINT16*)Buffer + 1;\r | |
1542 | }\r | |
1543 | \r | |
1544 | if (Size >= sizeof (UINT8)) {\r | |
1545 | //\r | |
1546 | // Read the last remaining byte if exist\r | |
1547 | //\r | |
1548 | *(volatile UINT8 *)Buffer = PciExpressRead8 (StartAddress);\r | |
1549 | }\r | |
1550 | \r | |
1551 | return ReturnValue;\r | |
1552 | }\r | |
1553 | \r | |
1554 | /**\r | |
1555 | Copies the data in a caller supplied buffer to a specified range of PCI\r | |
1556 | configuration space.\r | |
1557 | \r | |
1558 | Writes the range of PCI configuration registers specified by StartAddress and\r | |
1559 | Size from the buffer specified by Buffer. This function only allows the PCI\r | |
1560 | configuration registers from a single PCI function to be written. Size is\r | |
1561 | returned. When possible 32-bit PCI configuration write cycles are used to\r | |
1562 | write from StartAdress to StartAddress + Size. Due to alignment restrictions,\r | |
1563 | 8-bit and 16-bit PCI configuration write cycles may be used at the beginning\r | |
1564 | and the end of the range.\r | |
1565 | \r | |
1566 | If StartAddress > 0x0FFFFFFF, then ASSERT().\r | |
1567 | If ((StartAddress & 0xFFF) + Size) > 0x1000, then ASSERT().\r | |
1568 | If Size > 0 and Buffer is NULL, then ASSERT().\r | |
1569 | \r | |
2fc59a00 | 1570 | @param StartAddress The starting address that encodes the PCI Bus, Device,\r |
93b5b853 | 1571 | Function and Register.\r |
2fc59a00 | 1572 | @param Size The size in bytes of the transfer.\r |
1573 | @param Buffer The pointer to a buffer containing the data to write.\r | |
93b5b853 | 1574 | \r |
518db1d9 | 1575 | @return Size written to StartAddress.\r |
93b5b853 | 1576 | \r |
1577 | **/\r | |
1578 | UINTN\r | |
1579 | EFIAPI\r | |
1580 | PciExpressWriteBuffer (\r | |
1581 | IN UINTN StartAddress,\r | |
1582 | IN UINTN Size,\r | |
1583 | IN VOID *Buffer\r | |
1584 | )\r | |
1585 | {\r | |
1586 | UINTN ReturnValue;\r | |
1587 | \r | |
d908a2d6 | 1588 | //\r |
1589 | // Make sure Address is valid\r | |
1590 | //\r | |
1591 | ASSERT (((StartAddress) & ~0xfffffff) == 0);\r | |
93b5b853 | 1592 | ASSERT (((StartAddress & 0xFFF) + Size) <= 0x1000);\r |
1593 | \r | |
1594 | if (Size == 0) {\r | |
1595 | return 0;\r | |
1596 | }\r | |
1597 | \r | |
1598 | ASSERT (Buffer != NULL);\r | |
1599 | \r | |
1600 | //\r | |
1601 | // Save Size for return\r | |
1602 | //\r | |
1603 | ReturnValue = Size;\r | |
1604 | \r | |
1605 | if ((StartAddress & 1) != 0) {\r | |
1606 | //\r | |
1607 | // Write a byte if StartAddress is byte aligned\r | |
1608 | //\r | |
1609 | PciExpressWrite8 (StartAddress, *(UINT8*)Buffer);\r | |
1610 | StartAddress += sizeof (UINT8);\r | |
1611 | Size -= sizeof (UINT8);\r | |
1612 | Buffer = (UINT8*)Buffer + 1;\r | |
1613 | }\r | |
1614 | \r | |
1615 | if (Size >= sizeof (UINT16) && (StartAddress & 2) != 0) {\r | |
1616 | //\r | |
1617 | // Write a word if StartAddress is word aligned\r | |
1618 | //\r | |
1619 | PciExpressWrite16 (StartAddress, ReadUnaligned16 ((UINT16*)Buffer));\r | |
1620 | StartAddress += sizeof (UINT16);\r | |
1621 | Size -= sizeof (UINT16);\r | |
1622 | Buffer = (UINT16*)Buffer + 1;\r | |
1623 | }\r | |
1624 | \r | |
1625 | while (Size >= sizeof (UINT32)) {\r | |
1626 | //\r | |
1627 | // Write as many double words as possible\r | |
1628 | //\r | |
1629 | PciExpressWrite32 (StartAddress, ReadUnaligned32 ((UINT32*)Buffer));\r | |
1630 | StartAddress += sizeof (UINT32);\r | |
1631 | Size -= sizeof (UINT32);\r | |
1632 | Buffer = (UINT32*)Buffer + 1;\r | |
1633 | }\r | |
1634 | \r | |
1635 | if (Size >= sizeof (UINT16)) {\r | |
1636 | //\r | |
1637 | // Write the last remaining word if exist\r | |
1638 | //\r | |
1639 | PciExpressWrite16 (StartAddress, ReadUnaligned16 ((UINT16*)Buffer));\r | |
1640 | StartAddress += sizeof (UINT16);\r | |
1641 | Size -= sizeof (UINT16);\r | |
1642 | Buffer = (UINT16*)Buffer + 1;\r | |
1643 | }\r | |
1644 | \r | |
1645 | if (Size >= sizeof (UINT8)) {\r | |
1646 | //\r | |
1647 | // Write the last remaining byte if exist\r | |
1648 | //\r | |
1649 | PciExpressWrite8 (StartAddress, *(UINT8*)Buffer);\r | |
1650 | }\r | |
1651 | \r | |
1652 | return ReturnValue;\r | |
1653 | }\r |