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1 | /** @file\r | |
2 | The implementation for EFI_ISA_IO_PROTOCOL.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "InternalIsaIo.h"\r | |
10 | \r | |
11 | //\r | |
12 | // Module Variables\r | |
13 | //\r | |
14 | EFI_ISA_IO_PROTOCOL mIsaIoInterface = {\r | |
15 | {\r | |
16 | IsaIoMemRead,\r | |
17 | IsaIoMemWrite\r | |
18 | },\r | |
19 | {\r | |
20 | IsaIoIoRead,\r | |
21 | IsaIoIoWrite\r | |
22 | },\r | |
23 | IsaIoCopyMem,\r | |
24 | IsaIoMap,\r | |
25 | IsaIoUnmap,\r | |
26 | IsaIoAllocateBuffer,\r | |
27 | IsaIoFreeBuffer,\r | |
28 | IsaIoFlush,\r | |
29 | NULL,\r | |
30 | 0,\r | |
31 | NULL\r | |
32 | };\r | |
33 | \r | |
34 | EFI_ISA_DMA_REGISTERS mDmaRegisters[8] = {\r | |
35 | {\r | |
36 | 0x00,\r | |
37 | 0x87,\r | |
38 | 0x01\r | |
39 | },\r | |
40 | {\r | |
41 | 0x02,\r | |
42 | 0x83,\r | |
43 | 0x03\r | |
44 | },\r | |
45 | {\r | |
46 | 0x04,\r | |
47 | 0x81,\r | |
48 | 0x05\r | |
49 | },\r | |
50 | {\r | |
51 | 0x06,\r | |
52 | 0x82,\r | |
53 | 0x07\r | |
54 | },\r | |
55 | {\r | |
56 | 0x00,\r | |
57 | 0x00,\r | |
58 | 0x00\r | |
59 | }, // Channel 4 is invalid\r | |
60 | {\r | |
61 | 0xC4,\r | |
62 | 0x8B,\r | |
63 | 0xC6\r | |
64 | },\r | |
65 | {\r | |
66 | 0xC8,\r | |
67 | 0x89,\r | |
68 | 0xCA\r | |
69 | },\r | |
70 | {\r | |
71 | 0xCC,\r | |
72 | 0x8A,\r | |
73 | 0xCE\r | |
74 | },\r | |
75 | };\r | |
76 | \r | |
77 | /**\r | |
78 | Initializes an ISA I/O Instance\r | |
79 | \r | |
80 | @param[in] IsaIoDevice The iso device to be initialized.\r | |
81 | @param[in] IsaDeviceResourceList The resource list.\r | |
82 | \r | |
83 | **/\r | |
84 | VOID\r | |
85 | InitializeIsaIoInstance (\r | |
86 | IN ISA_IO_DEVICE *IsaIoDevice,\r | |
87 | IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList\r | |
88 | )\r | |
89 | {\r | |
90 | //\r | |
91 | // Use the ISA IO Protocol structure template to initialize the ISA IO instance\r | |
92 | //\r | |
93 | CopyMem (\r | |
94 | &IsaIoDevice->IsaIo,\r | |
95 | &mIsaIoInterface,\r | |
96 | sizeof (EFI_ISA_IO_PROTOCOL)\r | |
97 | );\r | |
98 | \r | |
99 | IsaIoDevice->IsaIo.ResourceList = IsaDeviceResourceList;\r | |
100 | }\r | |
101 | \r | |
102 | /**\r | |
103 | Performs an ISA I/O Read Cycle\r | |
104 | \r | |
105 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
106 | @param[in] Width Specifies the width of the I/O operation.\r | |
107 | @param[in] Offset The offset in ISA I/O space to start the I/O operation.\r | |
108 | @param[in] Count The number of I/O operations to perform.\r | |
109 | @param[out] Buffer The destination buffer to store the results\r | |
110 | \r | |
111 | @retval EFI_SUCCESS The data was read from the device sucessfully.\r | |
112 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
113 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
114 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
115 | **/\r | |
116 | EFI_STATUS\r | |
117 | EFIAPI\r | |
118 | IsaIoIoRead (\r | |
119 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
120 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
121 | IN UINT32 Offset,\r | |
122 | IN UINTN Count,\r | |
123 | OUT VOID *Buffer\r | |
124 | )\r | |
125 | {\r | |
126 | EFI_STATUS Status;\r | |
127 | ISA_IO_DEVICE *IsaIoDevice;\r | |
128 | \r | |
129 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
130 | \r | |
131 | //\r | |
132 | // Verify Isa IO Access\r | |
133 | //\r | |
134 | Status = IsaIoVerifyAccess (\r | |
135 | IsaIoDevice,\r | |
136 | IsaAccessTypeIo,\r | |
137 | Width,\r | |
138 | Count,\r | |
139 | Offset\r | |
140 | );\r | |
141 | if (EFI_ERROR (Status)) {\r | |
142 | return Status;\r | |
143 | }\r | |
144 | \r | |
145 | Status = IsaIoDevice->PciIo->Io.Read (\r | |
146 | IsaIoDevice->PciIo,\r | |
147 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
148 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
149 | Offset,\r | |
150 | Count,\r | |
151 | Buffer\r | |
152 | );\r | |
153 | \r | |
154 | if (EFI_ERROR (Status)) {\r | |
155 | REPORT_STATUS_CODE (\r | |
156 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
157 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
158 | );\r | |
159 | }\r | |
160 | \r | |
161 | return Status;\r | |
162 | }\r | |
163 | \r | |
164 | /**\r | |
165 | Performs an ISA I/O Write Cycle\r | |
166 | \r | |
167 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
168 | @param[in] Width Specifies the width of the I/O operation.\r | |
169 | @param[in] Offset The offset in ISA I/O space to start the I/O operation.\r | |
170 | @param[in] Count The number of I/O operations to perform.\r | |
171 | @param[in] Buffer The source buffer to write data from\r | |
172 | \r | |
173 | @retval EFI_SUCCESS The data was writen to the device sucessfully.\r | |
174 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
175 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
176 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
177 | **/\r | |
178 | EFI_STATUS\r | |
179 | EFIAPI\r | |
180 | IsaIoIoWrite (\r | |
181 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
182 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
183 | IN UINT32 Offset,\r | |
184 | IN UINTN Count,\r | |
185 | IN VOID *Buffer\r | |
186 | )\r | |
187 | {\r | |
188 | EFI_STATUS Status;\r | |
189 | ISA_IO_DEVICE *IsaIoDevice;\r | |
190 | \r | |
191 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
192 | \r | |
193 | //\r | |
194 | // Verify Isa IO Access\r | |
195 | //\r | |
196 | Status = IsaIoVerifyAccess (\r | |
197 | IsaIoDevice,\r | |
198 | IsaAccessTypeIo,\r | |
199 | Width,\r | |
200 | Count,\r | |
201 | Offset\r | |
202 | );\r | |
203 | if (EFI_ERROR (Status)) {\r | |
204 | return Status;\r | |
205 | }\r | |
206 | \r | |
207 | Status = IsaIoDevice->PciIo->Io.Write (\r | |
208 | IsaIoDevice->PciIo,\r | |
209 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
210 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
211 | Offset,\r | |
212 | Count,\r | |
213 | Buffer\r | |
214 | );\r | |
215 | \r | |
216 | if (EFI_ERROR (Status)) {\r | |
217 | REPORT_STATUS_CODE (\r | |
218 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
219 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
220 | );\r | |
221 | }\r | |
222 | \r | |
223 | return Status;\r | |
224 | }\r | |
225 | \r | |
226 | /**\r | |
227 | Writes an 8-bit I/O Port\r | |
228 | \r | |
229 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
230 | @param[in] Offset The offset in ISA IO space to start the IO operation.\r | |
231 | @param[in] Value The data to write port.\r | |
232 | \r | |
233 | @retval EFI_SUCCESS Success.\r | |
234 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r | |
235 | @retval EFI_UNSUPPORTED The address range specified by Offset is not valid.\r | |
236 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
237 | **/\r | |
238 | EFI_STATUS\r | |
239 | WritePort (\r | |
240 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
241 | IN UINT32 Offset,\r | |
242 | IN UINT8 Value\r | |
243 | )\r | |
244 | {\r | |
245 | EFI_STATUS Status;\r | |
246 | ISA_IO_DEVICE *IsaIoDevice;\r | |
247 | \r | |
248 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
249 | \r | |
250 | Status = IsaIoDevice->PciIo->Io.Write (\r | |
251 | IsaIoDevice->PciIo,\r | |
252 | EfiPciIoWidthUint8,\r | |
253 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
254 | Offset,\r | |
255 | 1,\r | |
256 | &Value\r | |
257 | );\r | |
258 | if (EFI_ERROR (Status)) {\r | |
259 | REPORT_STATUS_CODE (\r | |
260 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
261 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
262 | );\r | |
263 | return Status;\r | |
264 | }\r | |
265 | \r | |
266 | gBS->Stall (50);\r | |
267 | \r | |
268 | return EFI_SUCCESS;\r | |
269 | }\r | |
270 | \r | |
271 | /**\r | |
272 | Writes I/O operation base address and count number to a 8 bit I/O Port.\r | |
273 | \r | |
274 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
275 | @param[in] AddrOffset The address' offset.\r | |
276 | @param[in] PageOffset The page's offest.\r | |
277 | @param[in] CountOffset The count's offset.\r | |
278 | @param[in] BaseAddress The base address.\r | |
279 | @param[in] Count The number of I/O operations to perform.\r | |
280 | \r | |
281 | @retval EFI_SUCCESS Success.\r | |
282 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r | |
283 | @retval EFI_UNSUPPORTED The address range specified by these Offsets and Count is not valid.\r | |
284 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
285 | **/\r | |
286 | EFI_STATUS\r | |
287 | WriteDmaPort (\r | |
288 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
289 | IN UINT32 AddrOffset,\r | |
290 | IN UINT32 PageOffset,\r | |
291 | IN UINT32 CountOffset,\r | |
292 | IN UINT32 BaseAddress,\r | |
293 | IN UINT16 Count\r | |
294 | )\r | |
295 | {\r | |
296 | EFI_STATUS Status;\r | |
297 | \r | |
298 | Status = WritePort (This, AddrOffset, (UINT8) (BaseAddress & 0xff));\r | |
299 | if (EFI_ERROR (Status)) {\r | |
300 | return Status;\r | |
301 | }\r | |
302 | \r | |
303 | Status = WritePort (This, AddrOffset, (UINT8) ((BaseAddress >> 8) & 0xff));\r | |
304 | if (EFI_ERROR (Status)) {\r | |
305 | return Status;\r | |
306 | }\r | |
307 | \r | |
308 | Status = WritePort (This, PageOffset, (UINT8) ((BaseAddress >> 16) & 0xff));\r | |
309 | if (EFI_ERROR (Status)) {\r | |
310 | return Status;\r | |
311 | }\r | |
312 | \r | |
313 | Status = WritePort (This, CountOffset, (UINT8) (Count & 0xff));\r | |
314 | if (EFI_ERROR (Status)) {\r | |
315 | return Status;\r | |
316 | }\r | |
317 | \r | |
318 | Status = WritePort (This, CountOffset, (UINT8) ((Count >> 8) & 0xff));\r | |
319 | return Status;\r | |
320 | }\r | |
321 | \r | |
322 | /**\r | |
323 | Unmaps a memory region for DMA\r | |
324 | \r | |
325 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
326 | @param[in] Mapping The mapping value returned from EFI_ISA_IO.Map().\r | |
327 | \r | |
328 | @retval EFI_SUCCESS The range was unmapped.\r | |
329 | @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r | |
330 | **/\r | |
331 | EFI_STATUS\r | |
332 | EFIAPI\r | |
333 | IsaIoUnmap (\r | |
334 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
335 | IN VOID *Mapping\r | |
336 | )\r | |
337 | {\r | |
338 | ISA_MAP_INFO *IsaMapInfo;\r | |
339 | \r | |
340 | //\r | |
341 | // Check if DMA is supported.\r | |
342 | //\r | |
343 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r | |
344 | return EFI_UNSUPPORTED;\r | |
345 | }\r | |
346 | \r | |
347 | //\r | |
348 | // See if the Map() operation associated with this Unmap() required a mapping\r | |
349 | // buffer.If a mapping buffer was not required, then this function simply\r | |
350 | // returns EFI_SUCCESS.\r | |
351 | //\r | |
352 | if (Mapping != NULL) {\r | |
353 | //\r | |
354 | // Get the MAP_INFO structure from Mapping\r | |
355 | //\r | |
356 | IsaMapInfo = (ISA_MAP_INFO *) Mapping;\r | |
357 | \r | |
358 | //\r | |
359 | // If this is a write operation from the Agent's point of view,\r | |
360 | // then copy the contents of the mapped buffer into the real buffer\r | |
361 | // so the processor can read the contents of the real buffer.\r | |
362 | //\r | |
363 | if (IsaMapInfo->Operation == EfiIsaIoOperationBusMasterWrite) {\r | |
364 | CopyMem (\r | |
365 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
366 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
367 | IsaMapInfo->NumberOfBytes\r | |
368 | );\r | |
369 | }\r | |
370 | //\r | |
371 | // Free the mapped buffer and the MAP_INFO structure.\r | |
372 | //\r | |
373 | gBS->FreePages (IsaMapInfo->MappedHostAddress, IsaMapInfo->NumberOfPages);\r | |
374 | FreePool (IsaMapInfo);\r | |
375 | }\r | |
376 | \r | |
377 | return EFI_SUCCESS;\r | |
378 | }\r | |
379 | \r | |
380 | /**\r | |
381 | Flushes any posted write data to the system memory.\r | |
382 | \r | |
383 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
384 | \r | |
385 | @retval EFI_SUCCESS The buffers were flushed.\r | |
386 | @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.\r | |
387 | **/\r | |
388 | EFI_STATUS\r | |
389 | EFIAPI\r | |
390 | IsaIoFlush (\r | |
391 | IN EFI_ISA_IO_PROTOCOL *This\r | |
392 | )\r | |
393 | {\r | |
394 | EFI_STATUS Status;\r | |
395 | ISA_IO_DEVICE *IsaIoDevice;\r | |
396 | \r | |
397 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
398 | \r | |
399 | Status = IsaIoDevice->PciIo->Flush (IsaIoDevice->PciIo);\r | |
400 | \r | |
401 | if (EFI_ERROR (Status)) {\r | |
402 | REPORT_STATUS_CODE (\r | |
403 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
404 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
405 | );\r | |
406 | }\r | |
407 | \r | |
408 | return Status;\r | |
409 | }\r | |
410 | \r | |
411 | /**\r | |
412 | Verifies access to an ISA device\r | |
413 | \r | |
414 | @param[in] IsaIoDevice The ISA device to be verified.\r | |
415 | @param[in] Type The Access type. The input must be either IsaAccessTypeMem or IsaAccessTypeIo.\r | |
416 | @param[in] Width The width of the memory operation.\r | |
417 | @param[in] Count The number of memory operations to perform.\r | |
418 | @param[in] Offset The offset in ISA memory space to start the memory operation.\r | |
419 | \r | |
420 | @retval EFI_SUCCESS Verify success.\r | |
421 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r | |
422 | @retval EFI_UNSUPPORTED The device ont support the access type.\r | |
423 | **/\r | |
424 | EFI_STATUS\r | |
425 | IsaIoVerifyAccess (\r | |
426 | IN ISA_IO_DEVICE *IsaIoDevice,\r | |
427 | IN ISA_ACCESS_TYPE Type,\r | |
428 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
429 | IN UINTN Count,\r | |
430 | IN UINT32 Offset\r | |
431 | )\r | |
432 | {\r | |
433 | EFI_ISA_ACPI_RESOURCE *Item;\r | |
434 | EFI_STATUS Status;\r | |
435 | \r | |
436 | if ((UINT32)Width >= EfiIsaIoWidthMaximum ||\r | |
437 | Width == EfiIsaIoWidthReserved ||\r | |
438 | Width == EfiIsaIoWidthFifoReserved ||\r | |
439 | Width == EfiIsaIoWidthFillReserved\r | |
440 | ) {\r | |
441 | return EFI_INVALID_PARAMETER;\r | |
442 | }\r | |
443 | \r | |
444 | //\r | |
445 | // If Width is EfiIsaIoWidthFifoUintX then convert to EfiIsaIoWidthUintX\r | |
446 | // If Width is EfiIsaIoWidthFillUintX then convert to EfiIsaIoWidthUintX\r | |
447 | //\r | |
448 | if (Width >= EfiIsaIoWidthFifoUint8 && Width < EfiIsaIoWidthFifoReserved) {\r | |
449 | Count = 1;\r | |
450 | }\r | |
451 | \r | |
452 | Width = (EFI_ISA_IO_PROTOCOL_WIDTH) (Width & 0x03);\r | |
453 | \r | |
454 | Status = EFI_UNSUPPORTED;\r | |
455 | Item = IsaIoDevice->IsaIo.ResourceList->ResourceItem;\r | |
456 | while (Item->Type != EfiIsaAcpiResourceEndOfList) {\r | |
457 | if ((Type == IsaAccessTypeMem && Item->Type == EfiIsaAcpiResourceMemory) ||\r | |
458 | (Type == IsaAccessTypeIo && Item->Type == EfiIsaAcpiResourceIo)) {\r | |
459 | if (Offset >= Item->StartRange && (Offset + Count * (UINT32)(1 << Width)) - 1 <= Item->EndRange) {\r | |
460 | return EFI_SUCCESS;\r | |
461 | }\r | |
462 | \r | |
463 | if (Offset >= Item->StartRange && Offset <= Item->EndRange) {\r | |
464 | Status = EFI_INVALID_PARAMETER;\r | |
465 | }\r | |
466 | }\r | |
467 | \r | |
468 | Item++;\r | |
469 | }\r | |
470 | \r | |
471 | return Status;\r | |
472 | }\r | |
473 | \r | |
474 | /**\r | |
475 | Performs an ISA Memory Read Cycle\r | |
476 | \r | |
477 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
478 | @param[in] Width Specifies the width of the memory operation.\r | |
479 | @param[in] Offset The offset in ISA memory space to start the memory operation.\r | |
480 | @param[in] Count The number of memory operations to perform.\r | |
481 | @param[out] Buffer The destination buffer to store the results\r | |
482 | \r | |
483 | @retval EFI_SUCCESS The data was read from the device successfully.\r | |
484 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
485 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
486 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
487 | **/\r | |
488 | EFI_STATUS\r | |
489 | EFIAPI\r | |
490 | IsaIoMemRead (\r | |
491 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
492 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
493 | IN UINT32 Offset,\r | |
494 | IN UINTN Count,\r | |
495 | OUT VOID *Buffer\r | |
496 | )\r | |
497 | {\r | |
498 | EFI_STATUS Status;\r | |
499 | ISA_IO_DEVICE *IsaIoDevice;\r | |
500 | \r | |
501 | //\r | |
502 | // Check if ISA memory is supported.\r | |
503 | //\r | |
504 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
505 | return EFI_UNSUPPORTED;\r | |
506 | }\r | |
507 | \r | |
508 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
509 | \r | |
510 | //\r | |
511 | // Verify the Isa Io Access\r | |
512 | //\r | |
513 | Status = IsaIoVerifyAccess (\r | |
514 | IsaIoDevice,\r | |
515 | IsaAccessTypeMem,\r | |
516 | Width,\r | |
517 | Count,\r | |
518 | Offset\r | |
519 | );\r | |
520 | if (EFI_ERROR (Status)) {\r | |
521 | return Status;\r | |
522 | }\r | |
523 | \r | |
524 | Status = IsaIoDevice->PciIo->Mem.Read (\r | |
525 | IsaIoDevice->PciIo,\r | |
526 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
527 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
528 | Offset,\r | |
529 | Count,\r | |
530 | Buffer\r | |
531 | );\r | |
532 | \r | |
533 | if (EFI_ERROR (Status)) {\r | |
534 | REPORT_STATUS_CODE (\r | |
535 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
536 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
537 | );\r | |
538 | }\r | |
539 | \r | |
540 | return Status;\r | |
541 | }\r | |
542 | \r | |
543 | /**\r | |
544 | Performs an ISA Memory Write Cycle\r | |
545 | \r | |
546 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
547 | @param[in] Width Specifies the width of the memory operation.\r | |
548 | @param[in] Offset The offset in ISA memory space to start the memory operation.\r | |
549 | @param[in] Count The number of memory operations to perform.\r | |
550 | @param[in] Buffer The source buffer to write data from\r | |
551 | \r | |
552 | @retval EFI_SUCCESS The data was written to the device sucessfully.\r | |
553 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
554 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
555 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
556 | **/\r | |
557 | EFI_STATUS\r | |
558 | EFIAPI\r | |
559 | IsaIoMemWrite (\r | |
560 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
561 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
562 | IN UINT32 Offset,\r | |
563 | IN UINTN Count,\r | |
564 | IN VOID *Buffer\r | |
565 | )\r | |
566 | {\r | |
567 | EFI_STATUS Status;\r | |
568 | ISA_IO_DEVICE *IsaIoDevice;\r | |
569 | \r | |
570 | //\r | |
571 | // Check if ISA memory is supported.\r | |
572 | //\r | |
573 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
574 | return EFI_UNSUPPORTED;\r | |
575 | }\r | |
576 | \r | |
577 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
578 | \r | |
579 | //\r | |
580 | // Verify Isa IO Access\r | |
581 | //\r | |
582 | Status = IsaIoVerifyAccess (\r | |
583 | IsaIoDevice,\r | |
584 | IsaAccessTypeMem,\r | |
585 | Width,\r | |
586 | Count,\r | |
587 | Offset\r | |
588 | );\r | |
589 | if (EFI_ERROR (Status)) {\r | |
590 | return Status;\r | |
591 | }\r | |
592 | \r | |
593 | Status = IsaIoDevice->PciIo->Mem.Write (\r | |
594 | IsaIoDevice->PciIo,\r | |
595 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
596 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
597 | Offset,\r | |
598 | Count,\r | |
599 | Buffer\r | |
600 | );\r | |
601 | \r | |
602 | if (EFI_ERROR (Status)) {\r | |
603 | REPORT_STATUS_CODE (\r | |
604 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
605 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
606 | );\r | |
607 | }\r | |
608 | \r | |
609 | return Status;\r | |
610 | }\r | |
611 | \r | |
612 | /**\r | |
613 | Copy one region of ISA memory space to another region of ISA memory space on the ISA controller.\r | |
614 | \r | |
615 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
616 | @param[in] Width Specifies the width of the memory copy operation.\r | |
617 | @param[in] DestOffset The offset of the destination\r | |
618 | @param[in] SrcOffset The offset of the source\r | |
619 | @param[in] Count The number of memory copy operations to perform\r | |
620 | \r | |
621 | @retval EFI_SUCCESS The data was copied sucessfully.\r | |
622 | @retval EFI_UNSUPPORTED The DestOffset or SrcOffset is not valid for this device.\r | |
623 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
624 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
625 | **/\r | |
626 | EFI_STATUS\r | |
627 | EFIAPI\r | |
628 | IsaIoCopyMem (\r | |
629 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
630 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
631 | IN UINT32 DestOffset,\r | |
632 | IN UINT32 SrcOffset,\r | |
633 | IN UINTN Count\r | |
634 | )\r | |
635 | {\r | |
636 | EFI_STATUS Status;\r | |
637 | ISA_IO_DEVICE *IsaIoDevice;\r | |
638 | \r | |
639 | //\r | |
640 | // Check if ISA memory is supported.\r | |
641 | //\r | |
642 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
643 | return EFI_UNSUPPORTED;\r | |
644 | }\r | |
645 | \r | |
646 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
647 | \r | |
648 | //\r | |
649 | // Verify Isa IO Access for destination and source\r | |
650 | //\r | |
651 | Status = IsaIoVerifyAccess (\r | |
652 | IsaIoDevice,\r | |
653 | IsaAccessTypeMem,\r | |
654 | Width,\r | |
655 | Count,\r | |
656 | DestOffset\r | |
657 | );\r | |
658 | if (EFI_ERROR (Status)) {\r | |
659 | return Status;\r | |
660 | }\r | |
661 | \r | |
662 | Status = IsaIoVerifyAccess (\r | |
663 | IsaIoDevice,\r | |
664 | IsaAccessTypeMem,\r | |
665 | Width,\r | |
666 | Count,\r | |
667 | SrcOffset\r | |
668 | );\r | |
669 | if (EFI_ERROR (Status)) {\r | |
670 | return Status;\r | |
671 | }\r | |
672 | \r | |
673 | Status = IsaIoDevice->PciIo->CopyMem (\r | |
674 | IsaIoDevice->PciIo,\r | |
675 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
676 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
677 | DestOffset,\r | |
678 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
679 | SrcOffset,\r | |
680 | Count\r | |
681 | );\r | |
682 | \r | |
683 | if (EFI_ERROR (Status)) {\r | |
684 | REPORT_STATUS_CODE (\r | |
685 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
686 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
687 | );\r | |
688 | }\r | |
689 | \r | |
690 | return Status;\r | |
691 | }\r | |
692 | \r | |
693 | /**\r | |
694 | Maps a memory region for DMA, note this implementation\r | |
695 | only supports slave read/write operation to save code size.\r | |
696 | \r | |
697 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
698 | @param Operation Indicates the type of DMA (slave or bus master), and if\r | |
699 | the DMA operation is going to read or write to system memory.\r | |
700 | @param ChannelNumber The slave channel number to use for this DMA operation.\r | |
701 | If Operation and ChannelAttributes shows that this device\r | |
702 | performs bus mastering DMA, then this field is ignored.\r | |
703 | The legal range for this field is 0..7.\r | |
704 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
705 | @param HostAddress The system memory address to map to the device.\r | |
706 | @param NumberOfBytes On input the number of bytes to map. On output the number\r | |
707 | of bytes that were mapped.\r | |
708 | @param DeviceAddress The resulting map address for the bus master device to use\r | |
709 | to access the hosts HostAddress.\r | |
710 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
711 | \r | |
712 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r | |
713 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r | |
714 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r | |
715 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r | |
716 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
717 | **/\r | |
718 | EFI_STATUS\r | |
719 | IsaIoMapOnlySupportSlaveReadWrite (\r | |
720 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
721 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
722 | IN UINT8 ChannelNumber OPTIONAL,\r | |
723 | IN UINT32 ChannelAttributes,\r | |
724 | IN VOID *HostAddress,\r | |
725 | IN OUT UINTN *NumberOfBytes,\r | |
726 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
727 | OUT VOID **Mapping\r | |
728 | )\r | |
729 | {\r | |
730 | EFI_STATUS Status;\r | |
731 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
732 | ISA_MAP_INFO *IsaMapInfo;\r | |
733 | UINT8 DmaMode;\r | |
734 | UINTN MaxNumberOfBytes;\r | |
735 | UINT32 BaseAddress;\r | |
736 | UINT16 Count;\r | |
737 | UINT8 DmaMask;\r | |
738 | UINT8 DmaClear;\r | |
739 | UINT8 DmaChannelMode;\r | |
740 | \r | |
741 | if ((NULL == This) ||\r | |
742 | (NULL == HostAddress) ||\r | |
743 | (NULL == NumberOfBytes) ||\r | |
744 | (NULL == DeviceAddress) ||\r | |
745 | (NULL == Mapping)\r | |
746 | ) {\r | |
747 | return EFI_INVALID_PARAMETER;\r | |
748 | }\r | |
749 | \r | |
750 | //\r | |
751 | // Initialize the return values to their defaults\r | |
752 | //\r | |
753 | *Mapping = NULL;\r | |
754 | \r | |
755 | //\r | |
756 | // Make sure the Operation parameter is valid.\r | |
757 | // Light IsaIo only supports two operations.\r | |
758 | //\r | |
759 | if (!(Operation == EfiIsaIoOperationSlaveRead ||\r | |
760 | Operation == EfiIsaIoOperationSlaveWrite)) {\r | |
761 | return EFI_INVALID_PARAMETER;\r | |
762 | }\r | |
763 | \r | |
764 | if (ChannelNumber >= 4) {\r | |
765 | //\r | |
766 | // The Light IsaIo doesn't support channelNumber larger than 4.\r | |
767 | //\r | |
768 | return EFI_INVALID_PARAMETER;\r | |
769 | }\r | |
770 | \r | |
771 | //\r | |
772 | // Map the HostAddress to a DeviceAddress.\r | |
773 | //\r | |
774 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r | |
775 | if ((PhysicalAddress + *NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r | |
776 | //\r | |
777 | // Common Buffer operations can not be remapped. If the common buffer\r | |
778 | // is above 16MB, then it is not possible to generate a mapping, so return\r | |
779 | // an error.\r | |
780 | //\r | |
781 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r | |
782 | return EFI_UNSUPPORTED;\r | |
783 | }\r | |
784 | //\r | |
785 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r | |
786 | // is called later.\r | |
787 | //\r | |
788 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r | |
789 | if (IsaMapInfo == NULL) {\r | |
790 | *NumberOfBytes = 0;\r | |
791 | return EFI_OUT_OF_RESOURCES;\r | |
792 | }\r | |
793 | //\r | |
794 | // Return a pointer to the MAP_INFO structure in Mapping\r | |
795 | //\r | |
796 | *Mapping = IsaMapInfo;\r | |
797 | \r | |
798 | //\r | |
799 | // Initialize the MAP_INFO structure\r | |
800 | //\r | |
801 | IsaMapInfo->Operation = Operation;\r | |
802 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r | |
803 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r | |
804 | IsaMapInfo->HostAddress = PhysicalAddress;\r | |
805 | IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r | |
806 | \r | |
807 | //\r | |
808 | // Allocate a buffer below 16MB to map the transfer to.\r | |
809 | //\r | |
810 | Status = gBS->AllocatePages (\r | |
811 | AllocateMaxAddress,\r | |
812 | EfiBootServicesData,\r | |
813 | IsaMapInfo->NumberOfPages,\r | |
814 | &IsaMapInfo->MappedHostAddress\r | |
815 | );\r | |
816 | if (EFI_ERROR (Status)) {\r | |
817 | FreePool (IsaMapInfo);\r | |
818 | *NumberOfBytes = 0;\r | |
819 | *Mapping = NULL;\r | |
820 | return Status;\r | |
821 | }\r | |
822 | //\r | |
823 | // If this is a read operation from the DMA agents's point of view,\r | |
824 | // then copy the contents of the real buffer into the mapped buffer\r | |
825 | // so the DMA agent can read the contents of the real buffer.\r | |
826 | //\r | |
827 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
828 | CopyMem (\r | |
829 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
830 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
831 | IsaMapInfo->NumberOfBytes\r | |
832 | );\r | |
833 | }\r | |
834 | //\r | |
835 | // The DeviceAddress is the address of the maped buffer below 16 MB\r | |
836 | //\r | |
837 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r | |
838 | } else {\r | |
839 | //\r | |
840 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r | |
841 | // HostAddress\r | |
842 | //\r | |
843 | *DeviceAddress = PhysicalAddress;\r | |
844 | }\r | |
845 | \r | |
846 | //\r | |
847 | // Figure out what to program into the DMA Channel Mode Register\r | |
848 | //\r | |
849 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r | |
850 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
851 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r | |
852 | } else {\r | |
853 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r | |
854 | }\r | |
855 | //\r | |
856 | // We only support EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE in simplified IsaIo\r | |
857 | //\r | |
858 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r | |
859 | \r | |
860 | //\r | |
861 | // A Slave DMA transfer can not cross a 64K boundary.\r | |
862 | // Compute *NumberOfBytes based on this restriction.\r | |
863 | //\r | |
864 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r | |
865 | if (*NumberOfBytes > MaxNumberOfBytes) {\r | |
866 | *NumberOfBytes = MaxNumberOfBytes;\r | |
867 | }\r | |
868 | //\r | |
869 | // Compute the values to program into the BaseAddress and Count registers\r | |
870 | // of the Slave DMA controller\r | |
871 | //\r | |
872 | BaseAddress = (UINT32) (*DeviceAddress);\r | |
873 | Count = (UINT16) (*NumberOfBytes - 1);\r | |
874 | //\r | |
875 | // Program the DMA Write Single Mask Register for ChannelNumber\r | |
876 | // Clear the DMA Byte Pointer Register\r | |
877 | //\r | |
878 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r | |
879 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r | |
880 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r | |
881 | \r | |
882 | Status = WritePort (\r | |
883 | This,\r | |
884 | DmaMask,\r | |
885 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
886 | );\r | |
887 | if (EFI_ERROR (Status)) {\r | |
888 | return Status;\r | |
889 | }\r | |
890 | \r | |
891 | Status = WritePort (\r | |
892 | This,\r | |
893 | DmaClear,\r | |
894 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
895 | );\r | |
896 | if (EFI_ERROR (Status)) {\r | |
897 | return Status;\r | |
898 | }\r | |
899 | \r | |
900 | Status = WritePort (This, DmaChannelMode, DmaMode);\r | |
901 | if (EFI_ERROR (Status)) {\r | |
902 | return Status;\r | |
903 | }\r | |
904 | \r | |
905 | Status = WriteDmaPort (\r | |
906 | This,\r | |
907 | mDmaRegisters[ChannelNumber].Address,\r | |
908 | mDmaRegisters[ChannelNumber].Page,\r | |
909 | mDmaRegisters[ChannelNumber].Count,\r | |
910 | BaseAddress,\r | |
911 | Count\r | |
912 | );\r | |
913 | if (EFI_ERROR (Status)) {\r | |
914 | return Status;\r | |
915 | }\r | |
916 | \r | |
917 | Status = WritePort (\r | |
918 | This,\r | |
919 | DmaMask,\r | |
920 | (UINT8) (ChannelNumber & 0x03)\r | |
921 | );\r | |
922 | if (EFI_ERROR (Status)) {\r | |
923 | return Status;\r | |
924 | }\r | |
925 | \r | |
926 | return EFI_SUCCESS;\r | |
927 | }\r | |
928 | \r | |
929 | /**\r | |
930 | Maps a memory region for DMA. This implementation implement the\r | |
931 | the full mapping support.\r | |
932 | \r | |
933 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
934 | @param Operation Indicates the type of DMA (slave or bus master), and if\r | |
935 | the DMA operation is going to read or write to system memory.\r | |
936 | @param ChannelNumber The slave channel number to use for this DMA operation.\r | |
937 | If Operation and ChannelAttributes shows that this device\r | |
938 | performs bus mastering DMA, then this field is ignored.\r | |
939 | The legal range for this field is 0..7.\r | |
940 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
941 | @param HostAddress The system memory address to map to the device.\r | |
942 | @param NumberOfBytes On input the number of bytes to map. On output the number\r | |
943 | of bytes that were mapped.\r | |
944 | @param DeviceAddress The resulting map address for the bus master device to use\r | |
945 | to access the hosts HostAddress.\r | |
946 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
947 | \r | |
948 | @retval EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.\r | |
949 | @retval EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.\r | |
950 | @retval EFI_UNSUPPORTED - The HostAddress can not be mapped as a common buffer.\r | |
951 | @retval EFI_DEVICE_ERROR - The system hardware could not map the requested address.\r | |
952 | @retval EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.\r | |
953 | **/\r | |
954 | EFI_STATUS\r | |
955 | IsaIoMapFullSupport (\r | |
956 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
957 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
958 | IN UINT8 ChannelNumber OPTIONAL,\r | |
959 | IN UINT32 ChannelAttributes,\r | |
960 | IN VOID *HostAddress,\r | |
961 | IN OUT UINTN *NumberOfBytes,\r | |
962 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
963 | OUT VOID **Mapping\r | |
964 | )\r | |
965 | {\r | |
966 | EFI_STATUS Status;\r | |
967 | BOOLEAN Master;\r | |
968 | BOOLEAN Read;\r | |
969 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
970 | ISA_MAP_INFO *IsaMapInfo;\r | |
971 | UINT8 DmaMode;\r | |
972 | UINTN MaxNumberOfBytes;\r | |
973 | UINT32 BaseAddress;\r | |
974 | UINT16 Count;\r | |
975 | UINT8 DmaMask;\r | |
976 | UINT8 DmaClear;\r | |
977 | UINT8 DmaChannelMode;\r | |
978 | \r | |
979 | if ((NULL == This) ||\r | |
980 | (NULL == HostAddress) ||\r | |
981 | (NULL == NumberOfBytes) ||\r | |
982 | (NULL == DeviceAddress) ||\r | |
983 | (NULL == Mapping)\r | |
984 | ) {\r | |
985 | return EFI_INVALID_PARAMETER;\r | |
986 | }\r | |
987 | \r | |
988 | //\r | |
989 | // Initialize the return values to their defaults\r | |
990 | //\r | |
991 | *Mapping = NULL;\r | |
992 | \r | |
993 | //\r | |
994 | // Make sure the Operation parameter is valid\r | |
995 | //\r | |
996 | if ((UINT32)Operation >= EfiIsaIoOperationMaximum) {\r | |
997 | return EFI_INVALID_PARAMETER;\r | |
998 | }\r | |
999 | \r | |
1000 | if (ChannelNumber >= 8) {\r | |
1001 | return EFI_INVALID_PARAMETER;\r | |
1002 | }\r | |
1003 | \r | |
1004 | //\r | |
1005 | // See if this is a Slave DMA Operation\r | |
1006 | //\r | |
1007 | Master = TRUE;\r | |
1008 | Read = FALSE;\r | |
1009 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
1010 | Operation = EfiIsaIoOperationBusMasterRead;\r | |
1011 | Master = FALSE;\r | |
1012 | Read = TRUE;\r | |
1013 | }\r | |
1014 | \r | |
1015 | if (Operation == EfiIsaIoOperationSlaveWrite) {\r | |
1016 | Operation = EfiIsaIoOperationBusMasterWrite;\r | |
1017 | Master = FALSE;\r | |
1018 | Read = FALSE;\r | |
1019 | }\r | |
1020 | \r | |
1021 | if (!Master) {\r | |
1022 | //\r | |
1023 | // Make sure that ChannelNumber is a valid channel number\r | |
1024 | // Channel 4 is used to cascade, so it is illegal.\r | |
1025 | //\r | |
1026 | if (ChannelNumber == 4 || ChannelNumber > 7) {\r | |
1027 | return EFI_INVALID_PARAMETER;\r | |
1028 | }\r | |
1029 | //\r | |
1030 | // This implementation only support COMPATIBLE DMA Transfers\r | |
1031 | //\r | |
1032 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE) == 0) {\r | |
1033 | return EFI_INVALID_PARAMETER;\r | |
1034 | }\r | |
1035 | \r | |
1036 | if ((ChannelAttributes &\r | |
1037 | (EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A |\r | |
1038 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B |\r | |
1039 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C)) != 0) {\r | |
1040 | return EFI_INVALID_PARAMETER;\r | |
1041 | }\r | |
1042 | \r | |
1043 | if (ChannelNumber < 4) {\r | |
1044 | //\r | |
1045 | // If this is Channel 0..3, then the width must be 8 bit\r | |
1046 | //\r | |
1047 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) == 0) ||\r | |
1048 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) != 0)\r | |
1049 | ) {\r | |
1050 | return EFI_INVALID_PARAMETER;\r | |
1051 | }\r | |
1052 | } else {\r | |
1053 | //\r | |
1054 | // If this is Channel 4..7, then the width must be 16 bit\r | |
1055 | //\r | |
1056 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) != 0) ||\r | |
1057 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) == 0)) {\r | |
1058 | return EFI_INVALID_PARAMETER;\r | |
1059 | }\r | |
1060 | }\r | |
1061 | //\r | |
1062 | // Either Demand Mode or Single Mode must be selected, but not both\r | |
1063 | //\r | |
1064 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r | |
1065 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r | |
1066 | return EFI_INVALID_PARAMETER;\r | |
1067 | }\r | |
1068 | } else {\r | |
1069 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) == 0) {\r | |
1070 | return EFI_INVALID_PARAMETER;\r | |
1071 | }\r | |
1072 | }\r | |
1073 | }\r | |
1074 | //\r | |
1075 | // Map the HostAddress to a DeviceAddress.\r | |
1076 | //\r | |
1077 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r | |
1078 | if ((PhysicalAddress +*NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r | |
1079 | //\r | |
1080 | // Common Buffer operations can not be remapped. If the common buffer\r | |
1081 | // is above 16MB, then it is not possible to generate a mapping, so return\r | |
1082 | // an error.\r | |
1083 | //\r | |
1084 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r | |
1085 | return EFI_UNSUPPORTED;\r | |
1086 | }\r | |
1087 | //\r | |
1088 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r | |
1089 | // is called later.\r | |
1090 | //\r | |
1091 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r | |
1092 | if (IsaMapInfo == NULL) {\r | |
1093 | *NumberOfBytes = 0;\r | |
1094 | return EFI_OUT_OF_RESOURCES;\r | |
1095 | }\r | |
1096 | //\r | |
1097 | // Return a pointer to the MAP_INFO structure in Mapping\r | |
1098 | //\r | |
1099 | *Mapping = IsaMapInfo;\r | |
1100 | \r | |
1101 | //\r | |
1102 | // Initialize the MAP_INFO structure\r | |
1103 | //\r | |
1104 | IsaMapInfo->Operation = Operation;\r | |
1105 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r | |
1106 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r | |
1107 | IsaMapInfo->HostAddress = PhysicalAddress;\r | |
1108 | IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r | |
1109 | \r | |
1110 | //\r | |
1111 | // Allocate a buffer below 16MB to map the transfer to.\r | |
1112 | //\r | |
1113 | Status = gBS->AllocatePages (\r | |
1114 | AllocateMaxAddress,\r | |
1115 | EfiBootServicesData,\r | |
1116 | IsaMapInfo->NumberOfPages,\r | |
1117 | &IsaMapInfo->MappedHostAddress\r | |
1118 | );\r | |
1119 | if (EFI_ERROR (Status)) {\r | |
1120 | FreePool (IsaMapInfo);\r | |
1121 | *NumberOfBytes = 0;\r | |
1122 | *Mapping = NULL;\r | |
1123 | return Status;\r | |
1124 | }\r | |
1125 | //\r | |
1126 | // If this is a read operation from the DMA agents's point of view,\r | |
1127 | // then copy the contents of the real buffer into the mapped buffer\r | |
1128 | // so the DMA agent can read the contents of the real buffer.\r | |
1129 | //\r | |
1130 | if (Operation == EfiIsaIoOperationBusMasterRead) {\r | |
1131 | CopyMem (\r | |
1132 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
1133 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
1134 | IsaMapInfo->NumberOfBytes\r | |
1135 | );\r | |
1136 | }\r | |
1137 | //\r | |
1138 | // The DeviceAddress is the address of the maped buffer below 16 MB\r | |
1139 | //\r | |
1140 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r | |
1141 | } else {\r | |
1142 | //\r | |
1143 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r | |
1144 | // HostAddress\r | |
1145 | //\r | |
1146 | *DeviceAddress = PhysicalAddress;\r | |
1147 | }\r | |
1148 | //\r | |
1149 | // If this is a Bus Master operation then return\r | |
1150 | //\r | |
1151 | if (Master) {\r | |
1152 | return EFI_SUCCESS;\r | |
1153 | }\r | |
1154 | //\r | |
1155 | // Figure out what to program into the DMA Channel Mode Register\r | |
1156 | //\r | |
1157 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r | |
1158 | if (Read) {\r | |
1159 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r | |
1160 | } else {\r | |
1161 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r | |
1162 | }\r | |
1163 | \r | |
1164 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE) != 0) {\r | |
1165 | DmaMode |= B_8237_DMA_CHMODE_AE;\r | |
1166 | }\r | |
1167 | \r | |
1168 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r | |
1169 | DmaMode |= V_8237_DMA_CHMODE_DEMAND;\r | |
1170 | }\r | |
1171 | \r | |
1172 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r | |
1173 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r | |
1174 | }\r | |
1175 | //\r | |
1176 | // A Slave DMA transfer can not cross a 64K boundary.\r | |
1177 | // Compute *NumberOfBytes based on this restriction.\r | |
1178 | //\r | |
1179 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r | |
1180 | if (*NumberOfBytes > MaxNumberOfBytes) {\r | |
1181 | *NumberOfBytes = MaxNumberOfBytes;\r | |
1182 | }\r | |
1183 | //\r | |
1184 | // Compute the values to program into the BaseAddress and Count registers\r | |
1185 | // of the Slave DMA controller\r | |
1186 | //\r | |
1187 | if (ChannelNumber < 4) {\r | |
1188 | BaseAddress = (UINT32) (*DeviceAddress);\r | |
1189 | Count = (UINT16) (*NumberOfBytes - 1);\r | |
1190 | } else {\r | |
1191 | BaseAddress = (UINT32) (((UINT32) (*DeviceAddress) & 0xff0000) | (((UINT32) (*DeviceAddress) & 0xffff) >> 1));\r | |
1192 | Count = (UINT16) ((*NumberOfBytes - 1) >> 1);\r | |
1193 | }\r | |
1194 | //\r | |
1195 | // Program the DMA Write Single Mask Register for ChannelNumber\r | |
1196 | // Clear the DMA Byte Pointer Register\r | |
1197 | //\r | |
1198 | if (ChannelNumber < 4) {\r | |
1199 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r | |
1200 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r | |
1201 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r | |
1202 | } else {\r | |
1203 | DmaMask = R_8237_DMA_WRSMSK_CH4_7;\r | |
1204 | DmaClear = R_8237_DMA_CBPR_CH4_7;\r | |
1205 | DmaChannelMode = R_8237_DMA_CHMODE_CH4_7;\r | |
1206 | }\r | |
1207 | \r | |
1208 | Status = WritePort (\r | |
1209 | This,\r | |
1210 | DmaMask,\r | |
1211 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1212 | );\r | |
1213 | if (EFI_ERROR (Status)) {\r | |
1214 | return Status;\r | |
1215 | }\r | |
1216 | \r | |
1217 | Status = WritePort (\r | |
1218 | This,\r | |
1219 | DmaClear,\r | |
1220 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1221 | );\r | |
1222 | if (EFI_ERROR (Status)) {\r | |
1223 | return Status;\r | |
1224 | }\r | |
1225 | \r | |
1226 | Status = WritePort (This, DmaChannelMode, DmaMode);\r | |
1227 | if (EFI_ERROR (Status)) {\r | |
1228 | return Status;\r | |
1229 | }\r | |
1230 | \r | |
1231 | Status = WriteDmaPort (\r | |
1232 | This,\r | |
1233 | mDmaRegisters[ChannelNumber].Address,\r | |
1234 | mDmaRegisters[ChannelNumber].Page,\r | |
1235 | mDmaRegisters[ChannelNumber].Count,\r | |
1236 | BaseAddress,\r | |
1237 | Count\r | |
1238 | );\r | |
1239 | if (EFI_ERROR (Status)) {\r | |
1240 | return Status;\r | |
1241 | }\r | |
1242 | \r | |
1243 | Status = WritePort (\r | |
1244 | This,\r | |
1245 | DmaMask,\r | |
1246 | (UINT8) (ChannelNumber & 0x03)\r | |
1247 | );\r | |
1248 | if (EFI_ERROR (Status)) {\r | |
1249 | return Status;\r | |
1250 | }\r | |
1251 | \r | |
1252 | return EFI_SUCCESS;\r | |
1253 | }\r | |
1254 | \r | |
1255 | /**\r | |
1256 | Maps a memory region for DMA\r | |
1257 | \r | |
1258 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1259 | @param Operation Indicates the type of DMA (slave or bus master), and if\r | |
1260 | the DMA operation is going to read or write to system memory.\r | |
1261 | @param ChannelNumber The slave channel number to use for this DMA operation.\r | |
1262 | If Operation and ChannelAttributes shows that this device\r | |
1263 | performs bus mastering DMA, then this field is ignored.\r | |
1264 | The legal range for this field is 0..7.\r | |
1265 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
1266 | @param HostAddress The system memory address to map to the device.\r | |
1267 | @param NumberOfBytes On input the number of bytes to map. On output the number\r | |
1268 | of bytes that were mapped.\r | |
1269 | @param DeviceAddress The resulting map address for the bus master device to use\r | |
1270 | to access the hosts HostAddress.\r | |
1271 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
1272 | \r | |
1273 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r | |
1274 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r | |
1275 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r | |
1276 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r | |
1277 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
1278 | **/\r | |
1279 | EFI_STATUS\r | |
1280 | EFIAPI\r | |
1281 | IsaIoMap (\r | |
1282 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1283 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
1284 | IN UINT8 ChannelNumber OPTIONAL,\r | |
1285 | IN UINT32 ChannelAttributes,\r | |
1286 | IN VOID *HostAddress,\r | |
1287 | IN OUT UINTN *NumberOfBytes,\r | |
1288 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
1289 | OUT VOID **Mapping\r | |
1290 | )\r | |
1291 | {\r | |
1292 | //\r | |
1293 | // Check if DMA is supported.\r | |
1294 | //\r | |
1295 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r | |
1296 | return EFI_UNSUPPORTED;\r | |
1297 | }\r | |
1298 | //\r | |
1299 | // Set Feature Flag PcdIsaBusSupportBusMaster to FALSE to disable support for\r | |
1300 | // ISA Bus Master.\r | |
1301 | //\r | |
1302 | // So we just return EFI_UNSUPPORTED for these functions.\r | |
1303 | //\r | |
1304 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0) {\r | |
1305 | return IsaIoMapOnlySupportSlaveReadWrite (\r | |
1306 | This,\r | |
1307 | Operation,\r | |
1308 | ChannelNumber,\r | |
1309 | ChannelAttributes,\r | |
1310 | HostAddress,\r | |
1311 | NumberOfBytes,\r | |
1312 | DeviceAddress,\r | |
1313 | Mapping\r | |
1314 | );\r | |
1315 | \r | |
1316 | } else {\r | |
1317 | return IsaIoMapFullSupport (\r | |
1318 | This,\r | |
1319 | Operation,\r | |
1320 | ChannelNumber,\r | |
1321 | ChannelAttributes,\r | |
1322 | HostAddress,\r | |
1323 | NumberOfBytes,\r | |
1324 | DeviceAddress,\r | |
1325 | Mapping\r | |
1326 | );\r | |
1327 | }\r | |
1328 | }\r | |
1329 | \r | |
1330 | /**\r | |
1331 | Allocates pages that are suitable for an EfiIsaIoOperationBusMasterCommonBuffer mapping.\r | |
1332 | \r | |
1333 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1334 | @param[in] Type The type allocation to perform.\r | |
1335 | @param[in] MemoryType The type of memory to allocate.\r | |
1336 | @param[in] Pages The number of pages to allocate.\r | |
1337 | @param[out] HostAddress A pointer to store the base address of the allocated range.\r | |
1338 | @param[in] Attributes The requested bit mask of attributes for the allocated range.\r | |
1339 | \r | |
1340 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
1341 | @retval EFI_INVALID_PARAMETER Type is invalid or MemoryType is invalid or HostAddress is NULL\r | |
1342 | @retval EFI_UNSUPPORTED Attributes is unsupported or the memory range specified\r | |
1343 | by HostAddress, Pages, and Type is not available for common buffer use.\r | |
1344 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
1345 | **/\r | |
1346 | EFI_STATUS\r | |
1347 | EFIAPI\r | |
1348 | IsaIoAllocateBuffer (\r | |
1349 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1350 | IN EFI_ALLOCATE_TYPE Type,\r | |
1351 | IN EFI_MEMORY_TYPE MemoryType,\r | |
1352 | IN UINTN Pages,\r | |
1353 | OUT VOID **HostAddress,\r | |
1354 | IN UINT64 Attributes\r | |
1355 | )\r | |
1356 | {\r | |
1357 | EFI_STATUS Status;\r | |
1358 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
1359 | \r | |
1360 | //\r | |
1361 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for\r | |
1362 | // ISA Bus Master.\r | |
1363 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r | |
1364 | //\r | |
1365 | if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r | |
1366 | ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r | |
1367 | return EFI_UNSUPPORTED;\r | |
1368 | }\r | |
1369 | \r | |
1370 | if (HostAddress == NULL) {\r | |
1371 | return EFI_INVALID_PARAMETER;\r | |
1372 | }\r | |
1373 | \r | |
1374 | if ((UINT32)Type >= MaxAllocateType) {\r | |
1375 | return EFI_INVALID_PARAMETER;\r | |
1376 | }\r | |
1377 | //\r | |
1378 | // The only valid memory types are EfiBootServicesData and EfiRuntimeServicesData\r | |
1379 | //\r | |
1380 | if (MemoryType != EfiBootServicesData && MemoryType != EfiRuntimeServicesData) {\r | |
1381 | return EFI_INVALID_PARAMETER;\r | |
1382 | }\r | |
1383 | \r | |
1384 | if ((Attributes & ~(EFI_ISA_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_ISA_IO_ATTRIBUTE_MEMORY_CACHED)) != 0) {\r | |
1385 | return EFI_UNSUPPORTED;\r | |
1386 | }\r | |
1387 | \r | |
1388 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (ISA_MAX_MEMORY_ADDRESS - 1);\r | |
1389 | if (Type == AllocateAddress) {\r | |
1390 | if ((UINTN) (*HostAddress) >= ISA_MAX_MEMORY_ADDRESS) {\r | |
1391 | return EFI_UNSUPPORTED;\r | |
1392 | } else {\r | |
1393 | PhysicalAddress = (UINTN) (*HostAddress);\r | |
1394 | }\r | |
1395 | }\r | |
1396 | \r | |
1397 | if (Type == AllocateAnyPages) {\r | |
1398 | Type = AllocateMaxAddress;\r | |
1399 | }\r | |
1400 | \r | |
1401 | Status = gBS->AllocatePages (Type, MemoryType, Pages, &PhysicalAddress);\r | |
1402 | if (EFI_ERROR (Status)) {\r | |
1403 | REPORT_STATUS_CODE (\r | |
1404 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
1405 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
1406 | );\r | |
1407 | return Status;\r | |
1408 | }\r | |
1409 | \r | |
1410 | *HostAddress = (VOID *) (UINTN) PhysicalAddress;\r | |
1411 | return Status;\r | |
1412 | }\r | |
1413 | \r | |
1414 | /**\r | |
1415 | Frees memory that was allocated with EFI_ISA_IO.AllocateBuffer().\r | |
1416 | \r | |
1417 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1418 | @param[in] Pages The number of pages to free.\r | |
1419 | @param[in] HostAddress The base address of the allocated range.\r | |
1420 | \r | |
1421 | @retval EFI_SUCCESS The requested memory pages were freed.\r | |
1422 | @retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().\r | |
1423 | **/\r | |
1424 | EFI_STATUS\r | |
1425 | EFIAPI\r | |
1426 | IsaIoFreeBuffer (\r | |
1427 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1428 | IN UINTN Pages,\r | |
1429 | IN VOID *HostAddress\r | |
1430 | )\r | |
1431 | {\r | |
1432 | EFI_STATUS Status;\r | |
1433 | \r | |
1434 | //\r | |
1435 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for\r | |
1436 | // ISA Bus Master.\r | |
1437 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r | |
1438 | //\r | |
1439 | if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r | |
1440 | ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r | |
1441 | return EFI_UNSUPPORTED;\r | |
1442 | }\r | |
1443 | \r | |
1444 | Status = gBS->FreePages (\r | |
1445 | (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress,\r | |
1446 | Pages\r | |
1447 | );\r | |
1448 | if (EFI_ERROR (Status)) {\r | |
1449 | REPORT_STATUS_CODE (\r | |
1450 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
1451 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
1452 | );\r | |
1453 | }\r | |
1454 | \r | |
1455 | return Status;\r | |
1456 | }\r | |
1457 | \r |