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1 | /** @file\r |
2 | The implementation for EFI_ISA_IO_PROTOCOL. \r | |
3 | \r | |
4 | Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "IsaIo.h"\r | |
16 | \r | |
17 | //\r | |
18 | // Module Variables\r | |
19 | //\r | |
20 | EFI_ISA_IO_PROTOCOL mIsaIoInterface = {\r | |
21 | { \r | |
22 | IsaIoMemRead,\r | |
23 | IsaIoMemWrite\r | |
24 | },\r | |
25 | { \r | |
26 | IsaIoIoRead,\r | |
27 | IsaIoIoWrite\r | |
28 | },\r | |
29 | IsaIoCopyMem,\r | |
30 | IsaIoMap,\r | |
31 | IsaIoUnmap,\r | |
32 | IsaIoAllocateBuffer,\r | |
33 | IsaIoFreeBuffer,\r | |
34 | IsaIoFlush,\r | |
35 | NULL,\r | |
36 | 0,\r | |
37 | NULL\r | |
38 | };\r | |
39 | \r | |
40 | EFI_ISA_DMA_REGISTERS mDmaRegisters[8] = {\r | |
41 | {\r | |
42 | 0x00,\r | |
43 | 0x87,\r | |
44 | 0x01\r | |
45 | },\r | |
46 | {\r | |
47 | 0x02,\r | |
48 | 0x83,\r | |
49 | 0x03\r | |
50 | },\r | |
51 | {\r | |
52 | 0x04,\r | |
53 | 0x81,\r | |
54 | 0x05\r | |
55 | },\r | |
56 | {\r | |
57 | 0x06,\r | |
58 | 0x82,\r | |
59 | 0x07\r | |
60 | },\r | |
61 | {\r | |
62 | 0x00,\r | |
63 | 0x00,\r | |
64 | 0x00\r | |
65 | }, // Channel 4 is invalid\r | |
66 | {\r | |
67 | 0xC4,\r | |
68 | 0x8B,\r | |
69 | 0xC6\r | |
70 | },\r | |
71 | {\r | |
72 | 0xC8,\r | |
73 | 0x89,\r | |
74 | 0xCA\r | |
75 | },\r | |
76 | {\r | |
77 | 0xCC,\r | |
78 | 0x8A,\r | |
79 | 0xCE\r | |
80 | },\r | |
81 | };\r | |
82 | \r | |
83 | /**\r | |
84 | Verifies access to an ISA device\r | |
85 | \r | |
86 | @param[in] IsaIoDevice The ISA device to be verified.\r | |
87 | @param[in] Type The Access type. The input must be either IsaAccessTypeMem or IsaAccessTypeIo.\r | |
88 | @param[in] Width The width of the memory operation.\r | |
89 | @param[in] Count The number of memory operations to perform. \r | |
90 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r | |
91 | \r | |
92 | @retval EFI_SUCCESS Verify success.\r | |
93 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r | |
94 | @retval EFI_UNSUPPORTED The device ont support the access type.\r | |
95 | **/\r | |
96 | EFI_STATUS\r | |
97 | IsaIoVerifyAccess (\r | |
98 | IN ISA_IO_DEVICE *IsaIoDevice,\r | |
99 | IN ISA_ACCESS_TYPE Type,\r | |
100 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
101 | IN UINTN Count,\r | |
102 | IN UINT32 Offset\r | |
103 | )\r | |
104 | {\r | |
105 | EFI_ISA_ACPI_RESOURCE *Item;\r | |
106 | EFI_STATUS Status;\r | |
107 | \r | |
108 | if (Width < EfiIsaIoWidthUint8 ||\r | |
109 | Width >= EfiIsaIoWidthMaximum ||\r | |
110 | Width == EfiIsaIoWidthReserved ||\r | |
111 | Width == EfiIsaIoWidthFifoReserved ||\r | |
112 | Width == EfiIsaIoWidthFillReserved\r | |
113 | ) {\r | |
114 | return EFI_INVALID_PARAMETER;\r | |
115 | }\r | |
116 | \r | |
117 | //\r | |
118 | // If Width is EfiIsaIoWidthFifoUintX then convert to EfiIsaIoWidthUintX\r | |
119 | // If Width is EfiIsaIoWidthFillUintX then convert to EfiIsaIoWidthUintX\r | |
120 | //\r | |
121 | if (Width >= EfiIsaIoWidthFifoUint8 && Width < EfiIsaIoWidthFifoReserved) {\r | |
122 | Count = 1;\r | |
123 | }\r | |
124 | \r | |
125 | Width = (EFI_ISA_IO_PROTOCOL_WIDTH) (Width & 0x03);\r | |
126 | \r | |
127 | Status = EFI_UNSUPPORTED;\r | |
128 | Item = IsaIoDevice->IsaIo.ResourceList->ResourceItem;\r | |
129 | while (Item->Type != EfiIsaAcpiResourceEndOfList) {\r | |
130 | if ((Type == IsaAccessTypeMem && Item->Type == EfiIsaAcpiResourceMemory) ||\r | |
131 | (Type == IsaAccessTypeIo && Item->Type == EfiIsaAcpiResourceIo)) {\r | |
132 | if (Offset >= Item->StartRange && (Offset + Count * (UINT32)(1 << Width)) - 1 <= Item->EndRange) {\r | |
133 | return EFI_SUCCESS;\r | |
134 | }\r | |
135 | \r | |
136 | if (Offset >= Item->StartRange && Offset <= Item->EndRange) {\r | |
137 | Status = EFI_INVALID_PARAMETER;\r | |
138 | }\r | |
139 | }\r | |
140 | \r | |
141 | Item++;\r | |
142 | }\r | |
143 | \r | |
144 | return Status;\r | |
145 | }\r | |
146 | \r | |
147 | /**\r | |
148 | Convert the IO Information in ACPI descriptor to IO ISA Attribute.\r | |
149 | \r | |
150 | @param[in] Information The IO Information in ACPI descriptor\r | |
151 | \r | |
152 | @return UINT32 The IO ISA Attribute\r | |
153 | **/\r | |
154 | UINT32\r | |
155 | IsaIoAttribute (\r | |
156 | IN UINT8 Information\r | |
157 | )\r | |
158 | {\r | |
159 | UINT32 Attribute;\r | |
160 | \r | |
161 | Attribute = 0;\r | |
162 | \r | |
163 | switch (Information & EFI_ACPI_IO_DECODE_MASK) {\r | |
164 | case EFI_ACPI_IO_DECODE_16_BIT:\r | |
165 | Attribute |= EFI_ISA_ACPI_IO_DECODE_16_BITS;\r | |
166 | break;\r | |
167 | \r | |
168 | case EFI_ACPI_IO_DECODE_10_BIT:\r | |
169 | Attribute |= EFI_ISA_ACPI_IO_DECODE_10_BITS;\r | |
170 | break;\r | |
171 | }\r | |
172 | \r | |
173 | return Attribute;\r | |
174 | }\r | |
175 | \r | |
176 | /**\r | |
177 | Convert the IRQ Information in ACPI descriptor to IRQ ISA Attribute.\r | |
178 | \r | |
179 | @param[in] Information The IRQ Information in ACPI descriptor\r | |
180 | \r | |
181 | @return UINT32 The IRQ ISA Attribute\r | |
182 | **/\r | |
183 | UINT32\r | |
184 | IsaIrqAttribute (\r | |
185 | IN UINT8 Information\r | |
186 | )\r | |
187 | {\r | |
188 | UINT32 Attribute;\r | |
189 | \r | |
190 | Attribute = 0;\r | |
191 | \r | |
192 | if ((Information & EFI_ACPI_IRQ_POLARITY_MASK) == EFI_ACPI_IRQ_HIGH_TRUE) {\r | |
193 | if ((Information & EFI_ACPI_IRQ_MODE) == EFI_ACPI_IRQ_LEVEL_TRIGGERED) {\r | |
194 | Attribute = EFI_ISA_ACPI_IRQ_TYPE_HIGH_TRUE_LEVEL_SENSITIVE;\r | |
195 | } else {\r | |
196 | Attribute = EFI_ISA_ACPI_IRQ_TYPE_HIGH_TRUE_EDGE_SENSITIVE;\r | |
197 | }\r | |
198 | } else {\r | |
199 | if ((Information & EFI_ACPI_IRQ_MODE) == EFI_ACPI_IRQ_LEVEL_TRIGGERED) {\r | |
200 | Attribute = EFI_ISA_ACPI_IRQ_TYPE_LOW_TRUE_LEVEL_SENSITIVE;\r | |
201 | } else {\r | |
202 | Attribute = EFI_ISA_ACPI_IRQ_TYPE_LOW_TRUE_EDGE_SENSITIVE;\r | |
203 | }\r | |
204 | }\r | |
205 | return Attribute;\r | |
206 | }\r | |
207 | \r | |
208 | /**\r | |
209 | Convert the Memory Information in ACPI descriptor to Memory ISA Attribute.\r | |
210 | \r | |
211 | @param[in] Information The Memory Information in ACPI descriptor\r | |
212 | \r | |
213 | @return UINT32 The Memory ISA Attribute\r | |
214 | **/\r | |
215 | UINT32\r | |
216 | IsaMemoryAttribute (\r | |
217 | IN UINT8 Information\r | |
218 | )\r | |
219 | {\r | |
220 | UINT32 Attribute;\r | |
221 | \r | |
222 | Attribute = 0;\r | |
223 | \r | |
224 | switch (Information & EFI_ACPI_MEMORY_WRITE_STATUS_MASK) {\r | |
225 | case EFI_ACPI_MEMORY_WRITABLE:\r | |
226 | Attribute |= EFI_ISA_ACPI_MEMORY_WRITEABLE;\r | |
227 | break;\r | |
228 | }\r | |
229 | \r | |
230 | return Attribute;\r | |
231 | }\r | |
232 | \r | |
233 | /**\r | |
234 | Convert the DMA Information in ACPI descriptor to DMA ISA Attribute.\r | |
235 | \r | |
236 | @param[in] Information The DMA Information in ACPI descriptor\r | |
237 | \r | |
238 | @return UINT32 The DMA ISA Attribute\r | |
239 | **/\r | |
240 | UINT32\r | |
241 | IsaDmaAttribute (\r | |
242 | IN UINT8 Information\r | |
243 | )\r | |
244 | {\r | |
245 | UINT32 Attribute;\r | |
246 | \r | |
247 | Attribute = EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE;\r | |
248 | \r | |
249 | switch (Information & EFI_ACPI_DMA_SPEED_TYPE_MASK) {\r | |
250 | case EFI_ACPI_DMA_SPEED_TYPE_COMPATIBILITY:\r | |
251 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE;\r | |
252 | break;\r | |
253 | case EFI_ACPI_DMA_SPEED_TYPE_A:\r | |
254 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A;\r | |
255 | break;\r | |
256 | case EFI_ACPI_DMA_SPEED_TYPE_B:\r | |
257 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B;\r | |
258 | break;\r | |
259 | case EFI_ACPI_DMA_SPEED_TYPE_F:\r | |
260 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C;\r | |
261 | break;\r | |
262 | }\r | |
263 | \r | |
264 | switch (Information & EFI_ACPI_DMA_TRANSFER_TYPE_MASK) {\r | |
265 | case EFI_ACPI_DMA_TRANSFER_TYPE_8_BIT:\r | |
266 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8;\r | |
267 | break;\r | |
268 | case EFI_ACPI_DMA_TRANSFER_TYPE_16_BIT:\r | |
269 | Attribute |= EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16;\r | |
270 | break;\r | |
271 | }\r | |
272 | \r | |
273 | return Attribute;\r | |
274 | }\r | |
275 | \r | |
276 | /**\r | |
277 | Convert the ACPI resource descriptor to ISA resource descriptor.\r | |
278 | \r | |
279 | @param[in] AcpiResource Pointer to the ACPI resource descriptor\r | |
280 | @param[out] IsaResource The optional pointer to the buffer to\r | |
281 | store the converted ISA resource descriptor\r | |
282 | \r | |
283 | @return UINTN Number of ISA resource descriptor needed\r | |
284 | **/\r | |
285 | UINTN\r | |
286 | AcpiResourceToIsaResource (\r | |
287 | IN ACPI_RESOURCE_HEADER_PTR AcpiResource,\r | |
288 | OUT EFI_ISA_ACPI_RESOURCE *IsaResource OPTIONAL\r | |
289 | )\r | |
290 | {\r | |
291 | UINT32 Index;\r | |
292 | UINTN Count;\r | |
293 | UINT32 LastIndex;\r | |
294 | EFI_ACPI_IO_PORT_DESCRIPTOR *Io;\r | |
295 | EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR *FixedIo;\r | |
296 | EFI_ACPI_IRQ_DESCRIPTOR *Irq;\r | |
297 | EFI_ACPI_DMA_DESCRIPTOR *Dma;\r | |
298 | EFI_ACPI_32_BIT_MEMORY_RANGE_DESCRIPTOR *Memory;\r | |
299 | EFI_ACPI_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR *FixedMemory;\r | |
300 | \r | |
301 | Count = 0;\r | |
302 | LastIndex = 0;\r | |
303 | \r | |
304 | switch (AcpiResource.SmallHeader->Byte) {\r | |
305 | case ACPI_DMA_DESCRIPTOR:\r | |
306 | Dma = (EFI_ACPI_DMA_DESCRIPTOR *) AcpiResource.SmallHeader;\r | |
307 | for (Index = 0; Index < sizeof (Dma->ChannelMask) * 8; Index++) {\r | |
308 | if (Dma->ChannelMask & (1 << Index)) {\r | |
309 | if ((Count > 0) && (LastIndex + 1 == Index)) {\r | |
310 | if (IsaResource != NULL) {\r | |
311 | IsaResource[Count - 1].EndRange ++;\r | |
312 | }\r | |
313 | } else {\r | |
314 | if (IsaResource != NULL) {\r | |
315 | IsaResource[Count].Type = EfiIsaAcpiResourceDma;\r | |
316 | IsaResource[Count].Attribute = IsaDmaAttribute (Dma->Information);\r | |
317 | IsaResource[Count].StartRange = Index;\r | |
318 | IsaResource[Count].EndRange = Index;\r | |
319 | }\r | |
320 | Count ++;\r | |
321 | }\r | |
322 | \r | |
323 | LastIndex = Index;\r | |
324 | }\r | |
325 | }\r | |
326 | break;\r | |
327 | \r | |
328 | case ACPI_IO_PORT_DESCRIPTOR:\r | |
329 | Io = (EFI_ACPI_IO_PORT_DESCRIPTOR *) AcpiResource.SmallHeader;\r | |
330 | if (IsaResource != NULL) {\r | |
331 | IsaResource[Count].Type = EfiIsaAcpiResourceIo;\r | |
332 | IsaResource[Count].Attribute = IsaIoAttribute (Io->Information);\r | |
333 | IsaResource[Count].StartRange = Io->BaseAddressMin;\r | |
334 | IsaResource[Count].EndRange = Io->BaseAddressMin + Io->Length - 1;\r | |
335 | }\r | |
336 | Count ++;\r | |
337 | break;\r | |
338 | \r | |
339 | case ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR:\r | |
340 | FixedIo = (EFI_ACPI_FIXED_LOCATION_IO_PORT_DESCRIPTOR *) AcpiResource.SmallHeader;\r | |
341 | if (IsaResource != NULL) {\r | |
342 | IsaResource[Count].Type = EfiIsaAcpiResourceIo;\r | |
343 | IsaResource[Count].Attribute = EFI_ISA_ACPI_IO_DECODE_10_BITS;\r | |
344 | IsaResource[Count].StartRange = FixedIo->BaseAddress;\r | |
345 | IsaResource[Count].EndRange = FixedIo->BaseAddress + FixedIo->Length - 1;\r | |
346 | }\r | |
347 | Count ++;\r | |
348 | break;\r | |
349 | \r | |
350 | case ACPI_IRQ_DESCRIPTOR:\r | |
351 | case ACPI_IRQ_NOFLAG_DESCRIPTOR:\r | |
352 | Irq = (EFI_ACPI_IRQ_DESCRIPTOR *) AcpiResource.SmallHeader;\r | |
353 | for (Index = 0; Index < sizeof (Irq->Mask) * 8; Index++) {\r | |
354 | if (Irq->Mask & (1 << Index)) {\r | |
355 | if ((Count > 0) && (LastIndex + 1 == Index)) {\r | |
356 | if (IsaResource != NULL) {\r | |
357 | IsaResource[Count - 1].EndRange ++;\r | |
358 | }\r | |
359 | } else {\r | |
360 | if (IsaResource != NULL) {\r | |
361 | IsaResource[Count].Type = EfiIsaAcpiResourceInterrupt;\r | |
362 | if (AcpiResource.SmallHeader->Byte == ACPI_IRQ_DESCRIPTOR) {\r | |
363 | IsaResource[Count].Attribute = IsaIrqAttribute (Irq->Information);\r | |
364 | } else {\r | |
365 | IsaResource[Count].Attribute = EFI_ISA_ACPI_IRQ_TYPE_HIGH_TRUE_EDGE_SENSITIVE;\r | |
366 | }\r | |
367 | IsaResource[Count].StartRange = Index;\r | |
368 | IsaResource[Count].EndRange = Index;\r | |
369 | }\r | |
370 | Count++;\r | |
371 | }\r | |
372 | \r | |
373 | LastIndex = Index;\r | |
374 | }\r | |
375 | }\r | |
376 | break;\r | |
377 | \r | |
378 | case ACPI_32_BIT_MEMORY_RANGE_DESCRIPTOR:\r | |
379 | Memory = (EFI_ACPI_32_BIT_MEMORY_RANGE_DESCRIPTOR *) AcpiResource.LargeHeader;\r | |
380 | if (IsaResource != NULL) {\r | |
381 | IsaResource[Count].Type = EfiIsaAcpiResourceMemory;\r | |
382 | IsaResource[Count].Attribute = IsaMemoryAttribute (Memory->Information);\r | |
383 | IsaResource[Count].StartRange = Memory->BaseAddressMin;\r | |
384 | IsaResource[Count].EndRange = Memory->BaseAddressMin + Memory->Length - 1;\r | |
385 | }\r | |
386 | Count ++;\r | |
387 | break;\r | |
388 | \r | |
389 | case ACPI_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR:\r | |
390 | FixedMemory = (EFI_ACPI_32_BIT_FIXED_MEMORY_RANGE_DESCRIPTOR *) AcpiResource.LargeHeader;\r | |
391 | if (IsaResource != NULL) {\r | |
392 | IsaResource[Count].Type = EfiIsaAcpiResourceMemory;\r | |
393 | IsaResource[Count].Attribute = IsaMemoryAttribute (FixedMemory->Information);\r | |
394 | IsaResource[Count].StartRange = FixedMemory->BaseAddress;\r | |
395 | IsaResource[Count].EndRange = FixedMemory->BaseAddress + FixedMemory->Length - 1;\r | |
396 | }\r | |
397 | Count ++;\r | |
398 | break;\r | |
399 | \r | |
400 | case ACPI_END_TAG_DESCRIPTOR:\r | |
401 | if (IsaResource != NULL) {\r | |
402 | IsaResource[Count].Type = EfiIsaAcpiResourceEndOfList;\r | |
403 | IsaResource[Count].Attribute = 0;\r | |
404 | IsaResource[Count].StartRange = 0;\r | |
405 | IsaResource[Count].EndRange = 0;\r | |
406 | }\r | |
407 | Count ++;\r | |
408 | break;\r | |
409 | }\r | |
410 | \r | |
411 | return Count;\r | |
412 | }\r | |
413 | \r | |
414 | /**\r | |
415 | Initializes an ISA I/O Instance\r | |
416 | \r | |
417 | @param[in] IsaIoDevice The isa device to be initialized.\r | |
418 | @param[in] DevicePath The device path of the isa device.\r | |
419 | @param[in] Resources The ACPI resource list.\r | |
420 | \r | |
421 | **/\r | |
422 | VOID\r | |
423 | InitializeIsaIoInstance (\r | |
424 | IN ISA_IO_DEVICE *IsaIoDevice,\r | |
425 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
426 | IN ACPI_RESOURCE_HEADER_PTR Resources\r | |
427 | )\r | |
428 | {\r | |
429 | UINTN Index;\r | |
430 | ACPI_HID_DEVICE_PATH *AcpiNode;\r | |
431 | ACPI_RESOURCE_HEADER_PTR ResourcePtr;\r | |
432 | \r | |
433 | //\r | |
434 | // Use the ISA IO Protocol structure template to initialize the ISA IO instance\r | |
435 | //\r | |
436 | CopyMem (\r | |
437 | &IsaIoDevice->IsaIo,\r | |
438 | &mIsaIoInterface,\r | |
439 | sizeof (EFI_ISA_IO_PROTOCOL)\r | |
440 | );\r | |
441 | \r | |
442 | //\r | |
443 | // Count the resources including the ACPI End Tag\r | |
444 | //\r | |
445 | ResourcePtr = Resources;\r | |
446 | Index = 0;\r | |
447 | while (ResourcePtr.SmallHeader->Byte != ACPI_END_TAG_DESCRIPTOR) {\r | |
448 | \r | |
449 | Index += AcpiResourceToIsaResource (ResourcePtr, NULL);\r | |
450 | \r | |
451 | if (ResourcePtr.SmallHeader->Bits.Type == 0) {\r | |
452 | ResourcePtr.SmallHeader = (ACPI_SMALL_RESOURCE_HEADER *) ((UINT8 *) ResourcePtr.SmallHeader\r | |
453 | + ResourcePtr.SmallHeader->Bits.Length\r | |
454 | + sizeof (*ResourcePtr.SmallHeader));\r | |
455 | } else {\r | |
456 | ResourcePtr.LargeHeader = (ACPI_LARGE_RESOURCE_HEADER *) ((UINT8 *) ResourcePtr.LargeHeader\r | |
457 | + ResourcePtr.LargeHeader->Length\r | |
458 | + sizeof (*ResourcePtr.LargeHeader));\r | |
459 | }\r | |
460 | \r | |
461 | }\r | |
462 | //\r | |
463 | // Get the Isa Resource count for ACPI End Tag\r | |
464 | //\r | |
465 | Index += AcpiResourceToIsaResource (ResourcePtr, NULL);\r | |
466 | \r | |
467 | //\r | |
468 | // Initialize the ResourceList\r | |
469 | //\r | |
470 | IsaIoDevice->IsaIo.ResourceList = AllocatePool (sizeof (EFI_ISA_ACPI_RESOURCE_LIST) + Index * sizeof (EFI_ISA_ACPI_RESOURCE));\r | |
471 | ASSERT (IsaIoDevice->IsaIo.ResourceList != NULL);\r | |
472 | IsaIoDevice->IsaIo.ResourceList->ResourceItem = (EFI_ISA_ACPI_RESOURCE *) (IsaIoDevice->IsaIo.ResourceList + 1);\r | |
473 | \r | |
474 | AcpiNode = (ACPI_HID_DEVICE_PATH *) ((UINT8 *) DevicePath + GetDevicePathSize (DevicePath) - END_DEVICE_PATH_LENGTH - sizeof (ACPI_HID_DEVICE_PATH));\r | |
475 | IsaIoDevice->IsaIo.ResourceList->Device.HID = AcpiNode->HID;\r | |
476 | IsaIoDevice->IsaIo.ResourceList->Device.UID = AcpiNode->UID;\r | |
477 | \r | |
478 | ResourcePtr = Resources;\r | |
479 | Index = 0;\r | |
480 | while (ResourcePtr.SmallHeader->Byte != ACPI_END_TAG_DESCRIPTOR) {\r | |
481 | \r | |
482 | Index += AcpiResourceToIsaResource (ResourcePtr, &IsaIoDevice->IsaIo.ResourceList->ResourceItem[Index]);\r | |
483 | \r | |
484 | if (ResourcePtr.SmallHeader->Bits.Type == 0) {\r | |
485 | ResourcePtr.SmallHeader = (ACPI_SMALL_RESOURCE_HEADER *) ((UINT8 *) ResourcePtr.SmallHeader\r | |
486 | + ResourcePtr.SmallHeader->Bits.Length\r | |
487 | + sizeof (*ResourcePtr.SmallHeader));\r | |
488 | } else {\r | |
489 | ResourcePtr.LargeHeader = (ACPI_LARGE_RESOURCE_HEADER *) ((UINT8 *) ResourcePtr.LargeHeader\r | |
490 | + ResourcePtr.LargeHeader->Length\r | |
491 | + sizeof (*ResourcePtr.LargeHeader));\r | |
492 | }\r | |
493 | }\r | |
494 | \r | |
495 | //\r | |
496 | // Convert the ACPI End Tag\r | |
497 | //\r | |
498 | AcpiResourceToIsaResource (ResourcePtr, &IsaIoDevice->IsaIo.ResourceList->ResourceItem[Index]);\r | |
499 | }\r | |
500 | \r | |
501 | /**\r | |
502 | Performs an ISA I/O Read Cycle\r | |
503 | \r | |
504 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
505 | @param[in] Width Specifies the width of the I/O operation.\r | |
506 | @param[in] Offset The offset in ISA I/O space to start the I/O operation. \r | |
507 | @param[in] Count The number of I/O operations to perform. \r | |
508 | @param[out] Buffer The destination buffer to store the results\r | |
509 | \r | |
510 | @retval EFI_SUCCESS The data was read from the device sucessfully.\r | |
511 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
512 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
513 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
514 | **/\r | |
515 | EFI_STATUS\r | |
516 | EFIAPI\r | |
517 | IsaIoIoRead (\r | |
518 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
519 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
520 | IN UINT32 Offset,\r | |
521 | IN UINTN Count,\r | |
522 | OUT VOID *Buffer\r | |
523 | )\r | |
524 | {\r | |
525 | EFI_STATUS Status;\r | |
526 | ISA_IO_DEVICE *IsaIoDevice;\r | |
527 | \r | |
528 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
529 | \r | |
530 | //\r | |
531 | // Verify Isa IO Access\r | |
532 | //\r | |
533 | Status = IsaIoVerifyAccess (\r | |
534 | IsaIoDevice,\r | |
535 | IsaAccessTypeIo,\r | |
536 | Width,\r | |
537 | Count,\r | |
538 | Offset\r | |
539 | );\r | |
540 | if (EFI_ERROR (Status)) {\r | |
541 | return Status;\r | |
542 | }\r | |
543 | \r | |
544 | Status = IsaIoDevice->PciIo->Io.Read (\r | |
545 | IsaIoDevice->PciIo,\r | |
546 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
547 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
548 | Offset,\r | |
549 | Count,\r | |
550 | Buffer\r | |
551 | );\r | |
552 | \r | |
553 | if (EFI_ERROR (Status)) {\r | |
554 | REPORT_STATUS_CODE (\r | |
555 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
556 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
557 | );\r | |
558 | }\r | |
559 | \r | |
560 | return Status;\r | |
561 | }\r | |
562 | \r | |
563 | /**\r | |
564 | Performs an ISA I/O Write Cycle\r | |
565 | \r | |
566 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
567 | @param[in] Width Specifies the width of the I/O operation.\r | |
568 | @param[in] Offset The offset in ISA I/O space to start the I/O operation. \r | |
569 | @param[in] Count The number of I/O operations to perform. \r | |
570 | @param[in] Buffer The source buffer to write data from\r | |
571 | \r | |
572 | @retval EFI_SUCCESS The data was writen to the device sucessfully.\r | |
573 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
574 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
575 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
576 | **/\r | |
577 | EFI_STATUS\r | |
578 | EFIAPI\r | |
579 | IsaIoIoWrite (\r | |
580 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
581 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
582 | IN UINT32 Offset,\r | |
583 | IN UINTN Count,\r | |
584 | IN VOID *Buffer\r | |
585 | )\r | |
586 | {\r | |
587 | EFI_STATUS Status;\r | |
588 | ISA_IO_DEVICE *IsaIoDevice;\r | |
589 | \r | |
590 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
591 | \r | |
592 | //\r | |
593 | // Verify Isa IO Access\r | |
594 | //\r | |
595 | Status = IsaIoVerifyAccess (\r | |
596 | IsaIoDevice,\r | |
597 | IsaAccessTypeIo,\r | |
598 | Width,\r | |
599 | Count,\r | |
600 | Offset\r | |
601 | );\r | |
602 | if (EFI_ERROR (Status)) {\r | |
603 | return Status;\r | |
604 | }\r | |
605 | \r | |
606 | Status = IsaIoDevice->PciIo->Io.Write (\r | |
607 | IsaIoDevice->PciIo,\r | |
608 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
609 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
610 | Offset,\r | |
611 | Count,\r | |
612 | Buffer\r | |
613 | );\r | |
614 | \r | |
615 | if (EFI_ERROR (Status)) {\r | |
616 | REPORT_STATUS_CODE (\r | |
617 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
618 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
619 | );\r | |
620 | }\r | |
621 | \r | |
622 | return Status;\r | |
623 | }\r | |
624 | \r | |
625 | /**\r | |
626 | Writes an 8-bit I/O Port\r | |
627 | \r | |
628 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
629 | @param[in] Offset The offset in ISA IO space to start the IO operation. \r | |
630 | @param[in] Value The data to write port.\r | |
631 | \r | |
632 | @retval EFI_SUCCESS Success.\r | |
633 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r | |
634 | @retval EFI_UNSUPPORTED The address range specified by Offset is not valid.\r | |
635 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
636 | **/\r | |
637 | EFI_STATUS\r | |
638 | WritePort (\r | |
639 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
640 | IN UINT32 Offset,\r | |
641 | IN UINT8 Value\r | |
642 | )\r | |
643 | {\r | |
644 | EFI_STATUS Status;\r | |
645 | ISA_IO_DEVICE *IsaIoDevice;\r | |
646 | \r | |
647 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
648 | \r | |
649 | Status = IsaIoDevice->PciIo->Io.Write (\r | |
650 | IsaIoDevice->PciIo,\r | |
651 | EfiPciIoWidthUint8,\r | |
652 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
653 | Offset,\r | |
654 | 1,\r | |
655 | &Value\r | |
656 | );\r | |
657 | if (EFI_ERROR (Status)) {\r | |
658 | REPORT_STATUS_CODE (\r | |
659 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
660 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
661 | );\r | |
662 | return Status;\r | |
663 | }\r | |
664 | \r | |
665 | //\r | |
666 | // Wait for 50 microseconds to take affect.\r | |
667 | //\r | |
668 | gBS->Stall (50);\r | |
669 | \r | |
670 | return EFI_SUCCESS;\r | |
671 | }\r | |
672 | \r | |
673 | /**\r | |
674 | Writes I/O operation base address and count number to a 8 bit I/O Port.\r | |
675 | \r | |
676 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
677 | @param[in] AddrOffset The address' offset.\r | |
678 | @param[in] PageOffset The page's offest.\r | |
679 | @param[in] CountOffset The count's offset.\r | |
680 | @param[in] BaseAddress The base address.\r | |
681 | @param[in] Count The number of I/O operations to perform. \r | |
682 | \r | |
683 | @retval EFI_SUCCESS Success.\r | |
684 | @retval EFI_INVALID_PARAMETER Parameter is invalid.\r | |
685 | @retval EFI_UNSUPPORTED The address range specified by these Offsets and Count is not valid.\r | |
686 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
687 | **/\r | |
688 | EFI_STATUS\r | |
689 | WriteDmaPort (\r | |
690 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
691 | IN UINT32 AddrOffset,\r | |
692 | IN UINT32 PageOffset,\r | |
693 | IN UINT32 CountOffset,\r | |
694 | IN UINT32 BaseAddress,\r | |
695 | IN UINT16 Count\r | |
696 | )\r | |
697 | {\r | |
698 | EFI_STATUS Status;\r | |
699 | \r | |
700 | Status = WritePort (This, AddrOffset, (UINT8) (BaseAddress & 0xff));\r | |
701 | if (EFI_ERROR (Status)) {\r | |
702 | return Status;\r | |
703 | }\r | |
704 | \r | |
705 | Status = WritePort (This, AddrOffset, (UINT8) ((BaseAddress >> 8) & 0xff));\r | |
706 | if (EFI_ERROR (Status)) {\r | |
707 | return Status;\r | |
708 | }\r | |
709 | \r | |
710 | Status = WritePort (This, PageOffset, (UINT8) ((BaseAddress >> 16) & 0xff));\r | |
711 | if (EFI_ERROR (Status)) {\r | |
712 | return Status;\r | |
713 | }\r | |
714 | \r | |
715 | Status = WritePort (This, CountOffset, (UINT8) (Count & 0xff));\r | |
716 | if (EFI_ERROR (Status)) {\r | |
717 | return Status;\r | |
718 | }\r | |
719 | \r | |
720 | Status = WritePort (This, CountOffset, (UINT8) ((Count >> 8) & 0xff));\r | |
721 | return Status;\r | |
722 | }\r | |
723 | \r | |
724 | /**\r | |
725 | Unmaps a memory region for DMA\r | |
726 | \r | |
727 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
728 | @param[in] Mapping The mapping value returned from EFI_ISA_IO.Map().\r | |
729 | \r | |
730 | @retval EFI_SUCCESS The range was unmapped.\r | |
731 | @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r | |
732 | **/\r | |
733 | EFI_STATUS\r | |
734 | EFIAPI\r | |
735 | IsaIoUnmap (\r | |
736 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
737 | IN VOID *Mapping\r | |
738 | )\r | |
739 | {\r | |
740 | ISA_MAP_INFO *IsaMapInfo;\r | |
741 | \r | |
742 | //\r | |
743 | // Check if DMA is supported.\r | |
744 | //\r | |
745 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r | |
746 | return EFI_UNSUPPORTED;\r | |
747 | }\r | |
748 | \r | |
749 | //\r | |
750 | // See if the Map() operation associated with this Unmap() required a mapping\r | |
751 | // buffer.If a mapping buffer was not required, then this function simply\r | |
752 | // returns EFI_SUCCESS.\r | |
753 | //\r | |
754 | if (Mapping != NULL) {\r | |
755 | //\r | |
756 | // Get the MAP_INFO structure from Mapping\r | |
757 | //\r | |
758 | IsaMapInfo = (ISA_MAP_INFO *) Mapping;\r | |
759 | \r | |
760 | //\r | |
761 | // If this is a write operation from the Agent's point of view,\r | |
762 | // then copy the contents of the mapped buffer into the real buffer\r | |
763 | // so the processor can read the contents of the real buffer.\r | |
764 | //\r | |
765 | if (IsaMapInfo->Operation == EfiIsaIoOperationBusMasterWrite) {\r | |
766 | CopyMem (\r | |
767 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
768 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
769 | IsaMapInfo->NumberOfBytes\r | |
770 | );\r | |
771 | }\r | |
772 | //\r | |
773 | // Free the mapped buffer and the MAP_INFO structure.\r | |
774 | //\r | |
775 | gBS->FreePages (IsaMapInfo->MappedHostAddress, IsaMapInfo->NumberOfPages);\r | |
776 | FreePool (IsaMapInfo);\r | |
777 | }\r | |
778 | \r | |
779 | return EFI_SUCCESS;\r | |
780 | }\r | |
781 | \r | |
782 | /**\r | |
783 | Flushes any posted write data to the system memory.\r | |
784 | \r | |
785 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
786 | \r | |
787 | @retval EFI_SUCCESS The buffers were flushed.\r | |
788 | @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.\r | |
789 | **/\r | |
790 | EFI_STATUS\r | |
791 | EFIAPI\r | |
792 | IsaIoFlush (\r | |
793 | IN EFI_ISA_IO_PROTOCOL *This\r | |
794 | )\r | |
795 | {\r | |
796 | EFI_STATUS Status;\r | |
797 | ISA_IO_DEVICE *IsaIoDevice;\r | |
798 | \r | |
799 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
800 | \r | |
801 | Status = IsaIoDevice->PciIo->Flush (IsaIoDevice->PciIo);\r | |
802 | \r | |
803 | if (EFI_ERROR (Status)) {\r | |
804 | REPORT_STATUS_CODE (\r | |
805 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
806 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
807 | );\r | |
808 | }\r | |
809 | \r | |
810 | return Status;\r | |
811 | }\r | |
812 | \r | |
813 | /**\r | |
814 | Performs an ISA Memory Read Cycle\r | |
815 | \r | |
816 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
817 | @param[in] Width Specifies the width of the memory operation.\r | |
818 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r | |
819 | @param[in] Count The number of memory operations to perform. \r | |
820 | @param[out] Buffer The destination buffer to store the results\r | |
821 | \r | |
822 | @retval EFI_SUCCESS The data was read from the device successfully.\r | |
823 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
824 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
825 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
826 | **/\r | |
827 | EFI_STATUS\r | |
828 | EFIAPI\r | |
829 | IsaIoMemRead (\r | |
830 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
831 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
832 | IN UINT32 Offset,\r | |
833 | IN UINTN Count,\r | |
834 | OUT VOID *Buffer\r | |
835 | )\r | |
836 | {\r | |
837 | EFI_STATUS Status;\r | |
838 | ISA_IO_DEVICE *IsaIoDevice;\r | |
839 | \r | |
840 | //\r | |
841 | // Check if ISA memory is supported.\r | |
842 | //\r | |
843 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
844 | return EFI_UNSUPPORTED;\r | |
845 | }\r | |
846 | \r | |
847 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
848 | \r | |
849 | //\r | |
850 | // Verify the Isa Io Access\r | |
851 | //\r | |
852 | Status = IsaIoVerifyAccess (\r | |
853 | IsaIoDevice,\r | |
854 | IsaAccessTypeMem,\r | |
855 | Width,\r | |
856 | Count,\r | |
857 | Offset\r | |
858 | );\r | |
859 | if (EFI_ERROR (Status)) {\r | |
860 | return Status;\r | |
861 | }\r | |
862 | \r | |
863 | Status = IsaIoDevice->PciIo->Mem.Read (\r | |
864 | IsaIoDevice->PciIo,\r | |
865 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
866 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
867 | Offset,\r | |
868 | Count,\r | |
869 | Buffer\r | |
870 | );\r | |
871 | \r | |
872 | if (EFI_ERROR (Status)) {\r | |
873 | REPORT_STATUS_CODE (\r | |
874 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
875 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
876 | );\r | |
877 | }\r | |
878 | \r | |
879 | return Status;\r | |
880 | }\r | |
881 | \r | |
882 | /**\r | |
883 | Performs an ISA Memory Write Cycle\r | |
884 | \r | |
885 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance. \r | |
886 | @param[in] Width Specifies the width of the memory operation.\r | |
887 | @param[in] Offset The offset in ISA memory space to start the memory operation. \r | |
888 | @param[in] Count The number of memory operations to perform. \r | |
889 | @param[in] Buffer The source buffer to write data from\r | |
890 | \r | |
891 | @retval EFI_SUCCESS The data was written to the device sucessfully.\r | |
892 | @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r | |
893 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
894 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
895 | **/\r | |
896 | EFI_STATUS\r | |
897 | EFIAPI\r | |
898 | IsaIoMemWrite (\r | |
899 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
900 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
901 | IN UINT32 Offset,\r | |
902 | IN UINTN Count,\r | |
903 | IN VOID *Buffer\r | |
904 | )\r | |
905 | {\r | |
906 | EFI_STATUS Status;\r | |
907 | ISA_IO_DEVICE *IsaIoDevice;\r | |
908 | \r | |
909 | //\r | |
910 | // Check if ISA memory is supported.\r | |
911 | //\r | |
912 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
913 | return EFI_UNSUPPORTED;\r | |
914 | }\r | |
915 | \r | |
916 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
917 | \r | |
918 | //\r | |
919 | // Verify Isa IO Access\r | |
920 | //\r | |
921 | Status = IsaIoVerifyAccess (\r | |
922 | IsaIoDevice,\r | |
923 | IsaAccessTypeMem,\r | |
924 | Width,\r | |
925 | Count,\r | |
926 | Offset\r | |
927 | );\r | |
928 | if (EFI_ERROR (Status)) {\r | |
929 | return Status;\r | |
930 | }\r | |
931 | \r | |
932 | Status = IsaIoDevice->PciIo->Mem.Write (\r | |
933 | IsaIoDevice->PciIo,\r | |
934 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
935 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
936 | Offset,\r | |
937 | Count,\r | |
938 | Buffer\r | |
939 | );\r | |
940 | \r | |
941 | if (EFI_ERROR (Status)) {\r | |
942 | REPORT_STATUS_CODE (\r | |
943 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
944 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
945 | );\r | |
946 | }\r | |
947 | \r | |
948 | return Status;\r | |
949 | }\r | |
950 | \r | |
951 | /**\r | |
952 | Copy one region of ISA memory space to another region of ISA memory space on the ISA controller.\r | |
953 | \r | |
954 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
955 | @param[in] Width Specifies the width of the memory copy operation.\r | |
956 | @param[in] DestOffset The offset of the destination \r | |
957 | @param[in] SrcOffset The offset of the source\r | |
958 | @param[in] Count The number of memory copy operations to perform\r | |
959 | \r | |
960 | @retval EFI_SUCCESS The data was copied sucessfully.\r | |
961 | @retval EFI_UNSUPPORTED The DestOffset or SrcOffset is not valid for this device.\r | |
962 | @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r | |
963 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r | |
964 | **/\r | |
965 | EFI_STATUS\r | |
966 | EFIAPI\r | |
967 | IsaIoCopyMem (\r | |
968 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
969 | IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r | |
970 | IN UINT32 DestOffset,\r | |
971 | IN UINT32 SrcOffset,\r | |
972 | IN UINTN Count\r | |
973 | )\r | |
974 | {\r | |
975 | EFI_STATUS Status;\r | |
976 | ISA_IO_DEVICE *IsaIoDevice;\r | |
977 | \r | |
978 | //\r | |
979 | // Check if ISA memory is supported.\r | |
980 | //\r | |
981 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r | |
982 | return EFI_UNSUPPORTED;\r | |
983 | }\r | |
984 | \r | |
985 | IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r | |
986 | \r | |
987 | //\r | |
988 | // Verify Isa IO Access for destination and source\r | |
989 | //\r | |
990 | Status = IsaIoVerifyAccess (\r | |
991 | IsaIoDevice,\r | |
992 | IsaAccessTypeMem,\r | |
993 | Width,\r | |
994 | Count,\r | |
995 | DestOffset\r | |
996 | );\r | |
997 | if (EFI_ERROR (Status)) {\r | |
998 | return Status;\r | |
999 | }\r | |
1000 | \r | |
1001 | Status = IsaIoVerifyAccess (\r | |
1002 | IsaIoDevice,\r | |
1003 | IsaAccessTypeMem,\r | |
1004 | Width,\r | |
1005 | Count,\r | |
1006 | SrcOffset\r | |
1007 | );\r | |
1008 | if (EFI_ERROR (Status)) {\r | |
1009 | return Status;\r | |
1010 | }\r | |
1011 | \r | |
1012 | Status = IsaIoDevice->PciIo->CopyMem (\r | |
1013 | IsaIoDevice->PciIo,\r | |
1014 | (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r | |
1015 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
1016 | DestOffset,\r | |
1017 | EFI_PCI_IO_PASS_THROUGH_BAR,\r | |
1018 | SrcOffset,\r | |
1019 | Count\r | |
1020 | );\r | |
1021 | \r | |
1022 | if (EFI_ERROR (Status)) {\r | |
1023 | REPORT_STATUS_CODE (\r | |
1024 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
1025 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
1026 | );\r | |
1027 | }\r | |
1028 | \r | |
1029 | return Status;\r | |
1030 | }\r | |
1031 | \r | |
1032 | /**\r | |
1033 | Maps a memory region for DMA, note this implementation\r | |
1034 | only supports slave read/write operation to save code size.\r | |
1035 | \r | |
1036 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1037 | @param Operation Indicates the type of DMA (slave or bus master), and if \r | |
1038 | the DMA operation is going to read or write to system memory. \r | |
1039 | @param ChannelNumber The slave channel number to use for this DMA operation. \r | |
1040 | If Operation and ChannelAttributes shows that this device \r | |
1041 | performs bus mastering DMA, then this field is ignored. \r | |
1042 | The legal range for this field is 0..7. \r | |
1043 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
1044 | @param HostAddress The system memory address to map to the device. \r | |
1045 | @param NumberOfBytes On input the number of bytes to map. On output the number \r | |
1046 | of bytes that were mapped.\r | |
1047 | @param DeviceAddress The resulting map address for the bus master device to use \r | |
1048 | to access the hosts HostAddress. \r | |
1049 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
1050 | \r | |
1051 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r | |
1052 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r | |
1053 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r | |
1054 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r | |
1055 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
1056 | **/\r | |
1057 | EFI_STATUS\r | |
1058 | IsaIoMapOnlySupportSlaveReadWrite (\r | |
1059 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1060 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
1061 | IN UINT8 ChannelNumber OPTIONAL,\r | |
1062 | IN UINT32 ChannelAttributes,\r | |
1063 | IN VOID *HostAddress,\r | |
1064 | IN OUT UINTN *NumberOfBytes,\r | |
1065 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
1066 | OUT VOID **Mapping\r | |
1067 | )\r | |
1068 | {\r | |
1069 | EFI_STATUS Status;\r | |
1070 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
1071 | ISA_MAP_INFO *IsaMapInfo;\r | |
1072 | UINT8 DmaMode;\r | |
1073 | UINTN MaxNumberOfBytes;\r | |
1074 | UINT32 BaseAddress;\r | |
1075 | UINT16 Count;\r | |
1076 | UINT8 DmaMask;\r | |
1077 | UINT8 DmaClear;\r | |
1078 | UINT8 DmaChannelMode;\r | |
1079 | \r | |
1080 | if ((NULL == This) ||\r | |
1081 | (NULL == HostAddress) ||\r | |
1082 | (NULL == NumberOfBytes) ||\r | |
1083 | (NULL == DeviceAddress) ||\r | |
1084 | (NULL == Mapping)\r | |
1085 | ) {\r | |
1086 | return EFI_INVALID_PARAMETER;\r | |
1087 | }\r | |
1088 | \r | |
1089 | //\r | |
1090 | // Initialize the return values to their defaults\r | |
1091 | //\r | |
1092 | *Mapping = NULL;\r | |
1093 | \r | |
1094 | //\r | |
1095 | // Make sure the Operation parameter is valid.\r | |
1096 | // Light IsaIo only supports two operations.\r | |
1097 | //\r | |
1098 | if (!(Operation == EfiIsaIoOperationSlaveRead || \r | |
1099 | Operation == EfiIsaIoOperationSlaveWrite)) {\r | |
1100 | return EFI_INVALID_PARAMETER;\r | |
1101 | }\r | |
1102 | \r | |
1103 | if (ChannelNumber >= 4) {\r | |
1104 | //\r | |
1105 | // The Light IsaIo doesn't support channelNumber larger than 4.\r | |
1106 | //\r | |
1107 | return EFI_INVALID_PARAMETER;\r | |
1108 | }\r | |
1109 | \r | |
1110 | //\r | |
1111 | // Map the HostAddress to a DeviceAddress.\r | |
1112 | //\r | |
1113 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r | |
1114 | if ((PhysicalAddress + *NumberOfBytes) > BASE_16MB) {\r | |
1115 | //\r | |
1116 | // Common Buffer operations can not be remapped. If the common buffer\r | |
1117 | // is above 16MB, then it is not possible to generate a mapping, so return\r | |
1118 | // an error.\r | |
1119 | //\r | |
1120 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r | |
1121 | return EFI_UNSUPPORTED;\r | |
1122 | }\r | |
1123 | //\r | |
1124 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r | |
1125 | // is called later.\r | |
1126 | //\r | |
1127 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r | |
1128 | if (IsaMapInfo == NULL) {\r | |
1129 | *NumberOfBytes = 0;\r | |
1130 | return EFI_OUT_OF_RESOURCES;\r | |
1131 | }\r | |
1132 | //\r | |
1133 | // Return a pointer to the MAP_INFO structure in Mapping\r | |
1134 | //\r | |
1135 | *Mapping = IsaMapInfo;\r | |
1136 | \r | |
1137 | //\r | |
1138 | // Initialize the MAP_INFO structure\r | |
1139 | //\r | |
1140 | IsaMapInfo->Operation = Operation;\r | |
1141 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r | |
1142 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r | |
1143 | IsaMapInfo->HostAddress = PhysicalAddress;\r | |
1144 | IsaMapInfo->MappedHostAddress = BASE_16MB - 1;\r | |
1145 | \r | |
1146 | //\r | |
1147 | // Allocate a buffer below 16MB to map the transfer to.\r | |
1148 | //\r | |
1149 | Status = gBS->AllocatePages (\r | |
1150 | AllocateMaxAddress,\r | |
1151 | EfiBootServicesData,\r | |
1152 | IsaMapInfo->NumberOfPages,\r | |
1153 | &IsaMapInfo->MappedHostAddress\r | |
1154 | );\r | |
1155 | if (EFI_ERROR (Status)) {\r | |
1156 | FreePool (IsaMapInfo);\r | |
1157 | *NumberOfBytes = 0;\r | |
1158 | *Mapping = NULL;\r | |
1159 | return Status;\r | |
1160 | }\r | |
1161 | //\r | |
1162 | // If this is a read operation from the DMA agents's point of view,\r | |
1163 | // then copy the contents of the real buffer into the mapped buffer\r | |
1164 | // so the DMA agent can read the contents of the real buffer.\r | |
1165 | //\r | |
1166 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
1167 | CopyMem (\r | |
1168 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
1169 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
1170 | IsaMapInfo->NumberOfBytes\r | |
1171 | );\r | |
1172 | }\r | |
1173 | //\r | |
1174 | // The DeviceAddress is the address of the maped buffer below 16 MB\r | |
1175 | //\r | |
1176 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r | |
1177 | } else {\r | |
1178 | //\r | |
1179 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r | |
1180 | // HostAddress\r | |
1181 | //\r | |
1182 | *DeviceAddress = PhysicalAddress;\r | |
1183 | }\r | |
1184 | \r | |
1185 | //\r | |
1186 | // Figure out what to program into the DMA Channel Mode Register\r | |
1187 | //\r | |
1188 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r | |
1189 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
1190 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r | |
1191 | } else {\r | |
1192 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r | |
1193 | }\r | |
1194 | //\r | |
1195 | // We only support EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE in simplified IsaIo\r | |
1196 | //\r | |
1197 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r | |
1198 | \r | |
1199 | //\r | |
1200 | // A Slave DMA transfer can not cross a 64K boundary.\r | |
1201 | // Compute *NumberOfBytes based on this restriction.\r | |
1202 | //\r | |
1203 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r | |
1204 | if (*NumberOfBytes > MaxNumberOfBytes) {\r | |
1205 | *NumberOfBytes = MaxNumberOfBytes;\r | |
1206 | }\r | |
1207 | //\r | |
1208 | // Compute the values to program into the BaseAddress and Count registers\r | |
1209 | // of the Slave DMA controller\r | |
1210 | //\r | |
1211 | BaseAddress = (UINT32) (*DeviceAddress);\r | |
1212 | Count = (UINT16) (*NumberOfBytes - 1);\r | |
1213 | //\r | |
1214 | // Program the DMA Write Single Mask Register for ChannelNumber\r | |
1215 | // Clear the DMA Byte Pointer Register\r | |
1216 | //\r | |
1217 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r | |
1218 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r | |
1219 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r | |
1220 | \r | |
1221 | Status = WritePort (\r | |
1222 | This,\r | |
1223 | DmaMask,\r | |
1224 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1225 | );\r | |
1226 | if (EFI_ERROR (Status)) {\r | |
1227 | return Status;\r | |
1228 | }\r | |
1229 | \r | |
1230 | Status = WritePort (\r | |
1231 | This,\r | |
1232 | DmaClear,\r | |
1233 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1234 | );\r | |
1235 | if (EFI_ERROR (Status)) {\r | |
1236 | return Status;\r | |
1237 | }\r | |
1238 | \r | |
1239 | Status = WritePort (This, DmaChannelMode, DmaMode);\r | |
1240 | if (EFI_ERROR (Status)) {\r | |
1241 | return Status;\r | |
1242 | }\r | |
1243 | \r | |
1244 | Status = WriteDmaPort (\r | |
1245 | This,\r | |
1246 | mDmaRegisters[ChannelNumber].Address,\r | |
1247 | mDmaRegisters[ChannelNumber].Page,\r | |
1248 | mDmaRegisters[ChannelNumber].Count,\r | |
1249 | BaseAddress,\r | |
1250 | Count\r | |
1251 | );\r | |
1252 | if (EFI_ERROR (Status)) {\r | |
1253 | return Status;\r | |
1254 | }\r | |
1255 | \r | |
1256 | Status = WritePort (\r | |
1257 | This,\r | |
1258 | DmaMask,\r | |
1259 | (UINT8) (ChannelNumber & 0x03)\r | |
1260 | );\r | |
1261 | if (EFI_ERROR (Status)) {\r | |
1262 | return Status;\r | |
1263 | }\r | |
1264 | \r | |
1265 | return EFI_SUCCESS;\r | |
1266 | }\r | |
1267 | \r | |
1268 | /**\r | |
1269 | Maps a memory region for DMA. This implementation implement the \r | |
1270 | the full mapping support.\r | |
1271 | \r | |
1272 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1273 | @param Operation Indicates the type of DMA (slave or bus master), and if \r | |
1274 | the DMA operation is going to read or write to system memory. \r | |
1275 | @param ChannelNumber The slave channel number to use for this DMA operation. \r | |
1276 | If Operation and ChannelAttributes shows that this device \r | |
1277 | performs bus mastering DMA, then this field is ignored. \r | |
1278 | The legal range for this field is 0..7. \r | |
1279 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
1280 | @param HostAddress The system memory address to map to the device. \r | |
1281 | @param NumberOfBytes On input the number of bytes to map. On output the number \r | |
1282 | of bytes that were mapped.\r | |
1283 | @param DeviceAddress The resulting map address for the bus master device to use \r | |
1284 | to access the hosts HostAddress. \r | |
1285 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
1286 | \r | |
1287 | @retval EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.\r | |
1288 | @retval EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.\r | |
1289 | @retval EFI_UNSUPPORTED - The HostAddress can not be mapped as a common buffer.\r | |
1290 | @retval EFI_DEVICE_ERROR - The system hardware could not map the requested address.\r | |
1291 | @retval EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.\r | |
1292 | **/\r | |
1293 | EFI_STATUS\r | |
1294 | IsaIoMapFullSupport (\r | |
1295 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1296 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
1297 | IN UINT8 ChannelNumber OPTIONAL,\r | |
1298 | IN UINT32 ChannelAttributes,\r | |
1299 | IN VOID *HostAddress,\r | |
1300 | IN OUT UINTN *NumberOfBytes,\r | |
1301 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
1302 | OUT VOID **Mapping\r | |
1303 | )\r | |
1304 | {\r | |
1305 | EFI_STATUS Status;\r | |
1306 | BOOLEAN Master;\r | |
1307 | BOOLEAN Read;\r | |
1308 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
1309 | ISA_MAP_INFO *IsaMapInfo;\r | |
1310 | UINT8 DmaMode;\r | |
1311 | UINTN MaxNumberOfBytes;\r | |
1312 | UINT32 BaseAddress;\r | |
1313 | UINT16 Count;\r | |
1314 | UINT8 DmaMask;\r | |
1315 | UINT8 DmaClear;\r | |
1316 | UINT8 DmaChannelMode;\r | |
1317 | \r | |
1318 | if ((NULL == This) ||\r | |
1319 | (NULL == HostAddress) ||\r | |
1320 | (NULL == NumberOfBytes) ||\r | |
1321 | (NULL == DeviceAddress) ||\r | |
1322 | (NULL == Mapping)\r | |
1323 | ) {\r | |
1324 | return EFI_INVALID_PARAMETER;\r | |
1325 | }\r | |
1326 | \r | |
1327 | //\r | |
1328 | // Initialize the return values to their defaults\r | |
1329 | //\r | |
1330 | *Mapping = NULL;\r | |
1331 | \r | |
1332 | //\r | |
1333 | // Make sure the Operation parameter is valid\r | |
1334 | //\r | |
1335 | if (Operation < 0 || Operation >= EfiIsaIoOperationMaximum) {\r | |
1336 | return EFI_INVALID_PARAMETER;\r | |
1337 | }\r | |
1338 | \r | |
1339 | if (ChannelNumber >= 8) {\r | |
1340 | return EFI_INVALID_PARAMETER;\r | |
1341 | }\r | |
1342 | \r | |
1343 | //\r | |
1344 | // See if this is a Slave DMA Operation\r | |
1345 | //\r | |
1346 | Master = TRUE;\r | |
1347 | Read = FALSE;\r | |
1348 | if (Operation == EfiIsaIoOperationSlaveRead) {\r | |
1349 | Operation = EfiIsaIoOperationBusMasterRead;\r | |
1350 | Master = FALSE;\r | |
1351 | Read = TRUE;\r | |
1352 | }\r | |
1353 | \r | |
1354 | if (Operation == EfiIsaIoOperationSlaveWrite) {\r | |
1355 | Operation = EfiIsaIoOperationBusMasterWrite;\r | |
1356 | Master = FALSE;\r | |
1357 | Read = FALSE;\r | |
1358 | }\r | |
1359 | \r | |
1360 | if (!Master) {\r | |
1361 | //\r | |
1362 | // Make sure that ChannelNumber is a valid channel number\r | |
1363 | // Channel 4 is used to cascade, so it is illegal.\r | |
1364 | //\r | |
1365 | if (ChannelNumber == 4 || ChannelNumber > 7) {\r | |
1366 | return EFI_INVALID_PARAMETER;\r | |
1367 | }\r | |
1368 | //\r | |
1369 | // This implementation only support COMPATIBLE DMA Transfers\r | |
1370 | //\r | |
1371 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE) == 0) {\r | |
1372 | return EFI_INVALID_PARAMETER;\r | |
1373 | }\r | |
1374 | \r | |
1375 | if ((ChannelAttributes &\r | |
1376 | (EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A |\r | |
1377 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B |\r | |
1378 | EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C)) != 0) {\r | |
1379 | return EFI_INVALID_PARAMETER;\r | |
1380 | }\r | |
1381 | \r | |
1382 | if (ChannelNumber < 4) {\r | |
1383 | //\r | |
1384 | // If this is Channel 0..3, then the width must be 8 bit\r | |
1385 | //\r | |
1386 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) == 0) ||\r | |
1387 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) != 0)\r | |
1388 | ) {\r | |
1389 | return EFI_INVALID_PARAMETER;\r | |
1390 | }\r | |
1391 | } else {\r | |
1392 | //\r | |
1393 | // If this is Channel 4..7, then the width must be 16 bit\r | |
1394 | //\r | |
1395 | if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) != 0) ||\r | |
1396 | ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) == 0)) {\r | |
1397 | return EFI_INVALID_PARAMETER;\r | |
1398 | }\r | |
1399 | }\r | |
1400 | //\r | |
1401 | // Either Demand Mode or Single Mode must be selected, but not both\r | |
1402 | //\r | |
1403 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r | |
1404 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r | |
1405 | return EFI_INVALID_PARAMETER;\r | |
1406 | }\r | |
1407 | } else {\r | |
1408 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) == 0) {\r | |
1409 | return EFI_INVALID_PARAMETER;\r | |
1410 | }\r | |
1411 | }\r | |
1412 | }\r | |
1413 | //\r | |
1414 | // Map the HostAddress to a DeviceAddress.\r | |
1415 | //\r | |
1416 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r | |
1417 | if ((PhysicalAddress +*NumberOfBytes) > BASE_16MB) {\r | |
1418 | //\r | |
1419 | // Common Buffer operations can not be remapped. If the common buffer\r | |
1420 | // is above 16MB, then it is not possible to generate a mapping, so return\r | |
1421 | // an error.\r | |
1422 | //\r | |
1423 | if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r | |
1424 | return EFI_UNSUPPORTED;\r | |
1425 | }\r | |
1426 | //\r | |
1427 | // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r | |
1428 | // is called later.\r | |
1429 | //\r | |
1430 | IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r | |
1431 | if (IsaMapInfo == NULL) {\r | |
1432 | *NumberOfBytes = 0;\r | |
1433 | return EFI_OUT_OF_RESOURCES;\r | |
1434 | }\r | |
1435 | //\r | |
1436 | // Return a pointer to the MAP_INFO structure in Mapping\r | |
1437 | //\r | |
1438 | *Mapping = IsaMapInfo;\r | |
1439 | \r | |
1440 | //\r | |
1441 | // Initialize the MAP_INFO structure\r | |
1442 | //\r | |
1443 | IsaMapInfo->Operation = Operation;\r | |
1444 | IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r | |
1445 | IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r | |
1446 | IsaMapInfo->HostAddress = PhysicalAddress;\r | |
1447 | IsaMapInfo->MappedHostAddress = BASE_16MB - 1;\r | |
1448 | \r | |
1449 | //\r | |
1450 | // Allocate a buffer below 16MB to map the transfer to.\r | |
1451 | //\r | |
1452 | Status = gBS->AllocatePages (\r | |
1453 | AllocateMaxAddress,\r | |
1454 | EfiBootServicesData,\r | |
1455 | IsaMapInfo->NumberOfPages,\r | |
1456 | &IsaMapInfo->MappedHostAddress\r | |
1457 | );\r | |
1458 | if (EFI_ERROR (Status)) {\r | |
1459 | FreePool (IsaMapInfo);\r | |
1460 | *NumberOfBytes = 0;\r | |
1461 | *Mapping = NULL;\r | |
1462 | return Status;\r | |
1463 | }\r | |
1464 | //\r | |
1465 | // If this is a read operation from the DMA agents's point of view,\r | |
1466 | // then copy the contents of the real buffer into the mapped buffer\r | |
1467 | // so the DMA agent can read the contents of the real buffer.\r | |
1468 | //\r | |
1469 | if (Operation == EfiIsaIoOperationBusMasterRead) {\r | |
1470 | CopyMem (\r | |
1471 | (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r | |
1472 | (VOID *) (UINTN) IsaMapInfo->HostAddress,\r | |
1473 | IsaMapInfo->NumberOfBytes\r | |
1474 | );\r | |
1475 | }\r | |
1476 | //\r | |
1477 | // The DeviceAddress is the address of the maped buffer below 16 MB\r | |
1478 | //\r | |
1479 | *DeviceAddress = IsaMapInfo->MappedHostAddress;\r | |
1480 | } else {\r | |
1481 | //\r | |
1482 | // The transfer is below 16 MB, so the DeviceAddress is simply the\r | |
1483 | // HostAddress\r | |
1484 | //\r | |
1485 | *DeviceAddress = PhysicalAddress;\r | |
1486 | }\r | |
1487 | //\r | |
1488 | // If this is a Bus Master operation then return\r | |
1489 | //\r | |
1490 | if (Master) {\r | |
1491 | return EFI_SUCCESS;\r | |
1492 | }\r | |
1493 | //\r | |
1494 | // Figure out what to program into the DMA Channel Mode Register\r | |
1495 | //\r | |
1496 | DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r | |
1497 | if (Read) {\r | |
1498 | DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r | |
1499 | } else {\r | |
1500 | DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r | |
1501 | }\r | |
1502 | \r | |
1503 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE) != 0) {\r | |
1504 | DmaMode |= B_8237_DMA_CHMODE_AE;\r | |
1505 | }\r | |
1506 | \r | |
1507 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r | |
1508 | DmaMode |= V_8237_DMA_CHMODE_DEMAND;\r | |
1509 | }\r | |
1510 | \r | |
1511 | if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r | |
1512 | DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r | |
1513 | }\r | |
1514 | //\r | |
1515 | // A Slave DMA transfer can not cross a 64K boundary.\r | |
1516 | // Compute *NumberOfBytes based on this restriction.\r | |
1517 | //\r | |
1518 | MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r | |
1519 | if (*NumberOfBytes > MaxNumberOfBytes) {\r | |
1520 | *NumberOfBytes = MaxNumberOfBytes;\r | |
1521 | }\r | |
1522 | //\r | |
1523 | // Compute the values to program into the BaseAddress and Count registers\r | |
1524 | // of the Slave DMA controller\r | |
1525 | //\r | |
1526 | if (ChannelNumber < 4) {\r | |
1527 | BaseAddress = (UINT32) (*DeviceAddress);\r | |
1528 | Count = (UINT16) (*NumberOfBytes - 1);\r | |
1529 | } else {\r | |
1530 | BaseAddress = (UINT32) (((UINT32) (*DeviceAddress) & 0xff0000) | (((UINT32) (*DeviceAddress) & 0xffff) >> 1));\r | |
1531 | Count = (UINT16) ((*NumberOfBytes - 1) >> 1);\r | |
1532 | }\r | |
1533 | //\r | |
1534 | // Program the DMA Write Single Mask Register for ChannelNumber\r | |
1535 | // Clear the DMA Byte Pointer Register\r | |
1536 | //\r | |
1537 | if (ChannelNumber < 4) {\r | |
1538 | DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r | |
1539 | DmaClear = R_8237_DMA_CBPR_CH0_3;\r | |
1540 | DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r | |
1541 | } else {\r | |
1542 | DmaMask = R_8237_DMA_WRSMSK_CH4_7;\r | |
1543 | DmaClear = R_8237_DMA_CBPR_CH4_7;\r | |
1544 | DmaChannelMode = R_8237_DMA_CHMODE_CH4_7;\r | |
1545 | }\r | |
1546 | \r | |
1547 | Status = WritePort (\r | |
1548 | This,\r | |
1549 | DmaMask,\r | |
1550 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1551 | );\r | |
1552 | if (EFI_ERROR (Status)) {\r | |
1553 | return Status;\r | |
1554 | }\r | |
1555 | \r | |
1556 | Status = WritePort (\r | |
1557 | This,\r | |
1558 | DmaClear,\r | |
1559 | (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r | |
1560 | );\r | |
1561 | if (EFI_ERROR (Status)) {\r | |
1562 | return Status;\r | |
1563 | }\r | |
1564 | \r | |
1565 | Status = WritePort (This, DmaChannelMode, DmaMode);\r | |
1566 | if (EFI_ERROR (Status)) {\r | |
1567 | return Status;\r | |
1568 | }\r | |
1569 | \r | |
1570 | Status = WriteDmaPort (\r | |
1571 | This,\r | |
1572 | mDmaRegisters[ChannelNumber].Address,\r | |
1573 | mDmaRegisters[ChannelNumber].Page,\r | |
1574 | mDmaRegisters[ChannelNumber].Count,\r | |
1575 | BaseAddress,\r | |
1576 | Count\r | |
1577 | );\r | |
1578 | if (EFI_ERROR (Status)) {\r | |
1579 | return Status;\r | |
1580 | }\r | |
1581 | \r | |
1582 | Status = WritePort (\r | |
1583 | This,\r | |
1584 | DmaMask,\r | |
1585 | (UINT8) (ChannelNumber & 0x03)\r | |
1586 | );\r | |
1587 | if (EFI_ERROR (Status)) {\r | |
1588 | return Status;\r | |
1589 | }\r | |
1590 | \r | |
1591 | return EFI_SUCCESS;\r | |
1592 | }\r | |
1593 | \r | |
1594 | /**\r | |
1595 | Maps a memory region for DMA\r | |
1596 | \r | |
1597 | @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1598 | @param Operation Indicates the type of DMA (slave or bus master), and if \r | |
1599 | the DMA operation is going to read or write to system memory. \r | |
1600 | @param ChannelNumber The slave channel number to use for this DMA operation. \r | |
1601 | If Operation and ChannelAttributes shows that this device \r | |
1602 | performs bus mastering DMA, then this field is ignored. \r | |
1603 | The legal range for this field is 0..7. \r | |
1604 | @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r | |
1605 | @param HostAddress The system memory address to map to the device. \r | |
1606 | @param NumberOfBytes On input the number of bytes to map. On output the number \r | |
1607 | of bytes that were mapped.\r | |
1608 | @param DeviceAddress The resulting map address for the bus master device to use \r | |
1609 | to access the hosts HostAddress. \r | |
1610 | @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r | |
1611 | \r | |
1612 | @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r | |
1613 | @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r | |
1614 | @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r | |
1615 | @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r | |
1616 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
1617 | **/\r | |
1618 | EFI_STATUS\r | |
1619 | EFIAPI\r | |
1620 | IsaIoMap (\r | |
1621 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1622 | IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r | |
1623 | IN UINT8 ChannelNumber OPTIONAL,\r | |
1624 | IN UINT32 ChannelAttributes,\r | |
1625 | IN VOID *HostAddress,\r | |
1626 | IN OUT UINTN *NumberOfBytes,\r | |
1627 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
1628 | OUT VOID **Mapping\r | |
1629 | )\r | |
1630 | {\r | |
1631 | //\r | |
1632 | // Check if DMA is supported.\r | |
1633 | //\r | |
1634 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r | |
1635 | return EFI_UNSUPPORTED;\r | |
1636 | }\r | |
1637 | //\r | |
1638 | // Set Feature Flag PcdIsaBusSupportBusMaster to FALSE to disable support for \r | |
1639 | // ISA Bus Master.\r | |
1640 | //\r | |
1641 | // So we just return EFI_UNSUPPORTED for these functions.\r | |
1642 | //\r | |
1643 | if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0) {\r | |
1644 | return IsaIoMapOnlySupportSlaveReadWrite (\r | |
1645 | This,\r | |
1646 | Operation,\r | |
1647 | ChannelNumber,\r | |
1648 | ChannelAttributes,\r | |
1649 | HostAddress,\r | |
1650 | NumberOfBytes,\r | |
1651 | DeviceAddress,\r | |
1652 | Mapping\r | |
1653 | );\r | |
1654 | \r | |
1655 | } else {\r | |
1656 | return IsaIoMapFullSupport (\r | |
1657 | This,\r | |
1658 | Operation,\r | |
1659 | ChannelNumber,\r | |
1660 | ChannelAttributes,\r | |
1661 | HostAddress,\r | |
1662 | NumberOfBytes,\r | |
1663 | DeviceAddress,\r | |
1664 | Mapping\r | |
1665 | );\r | |
1666 | }\r | |
1667 | }\r | |
1668 | \r | |
1669 | /**\r | |
1670 | Allocates pages that are suitable for an EfiIsaIoOperationBusMasterCommonBuffer mapping.\r | |
1671 | \r | |
1672 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1673 | @param[in] Type The type allocation to perform.\r | |
1674 | @param[in] MemoryType The type of memory to allocate.\r | |
1675 | @param[in] Pages The number of pages to allocate.\r | |
1676 | @param[out] HostAddress A pointer to store the base address of the allocated range.\r | |
1677 | @param[in] Attributes The requested bit mask of attributes for the allocated range.\r | |
1678 | \r | |
1679 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
1680 | @retval EFI_INVALID_PARAMETER Type is invalid or MemoryType is invalid or HostAddress is NULL\r | |
1681 | @retval EFI_UNSUPPORTED Attributes is unsupported or the memory range specified \r | |
1682 | by HostAddress, Pages, and Type is not available for common buffer use.\r | |
1683 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
1684 | **/\r | |
1685 | EFI_STATUS\r | |
1686 | EFIAPI\r | |
1687 | IsaIoAllocateBuffer (\r | |
1688 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1689 | IN EFI_ALLOCATE_TYPE Type,\r | |
1690 | IN EFI_MEMORY_TYPE MemoryType,\r | |
1691 | IN UINTN Pages,\r | |
1692 | OUT VOID **HostAddress,\r | |
1693 | IN UINT64 Attributes\r | |
1694 | )\r | |
1695 | {\r | |
1696 | EFI_STATUS Status;\r | |
1697 | EFI_PHYSICAL_ADDRESS PhysicalAddress;\r | |
1698 | \r | |
1699 | //\r | |
1700 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for \r | |
1701 | // ISA Bus Master.\r | |
1702 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r | |
1703 | //\r | |
1704 | if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r | |
1705 | ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r | |
1706 | return EFI_UNSUPPORTED;\r | |
1707 | }\r | |
1708 | \r | |
1709 | if (HostAddress == NULL) {\r | |
1710 | return EFI_INVALID_PARAMETER;\r | |
1711 | }\r | |
1712 | \r | |
1713 | if (Type < AllocateAnyPages || Type >= MaxAllocateType) {\r | |
1714 | return EFI_INVALID_PARAMETER;\r | |
1715 | }\r | |
1716 | //\r | |
1717 | // The only valid memory types are EfiBootServicesData and EfiRuntimeServicesData\r | |
1718 | //\r | |
1719 | if (MemoryType != EfiBootServicesData && MemoryType != EfiRuntimeServicesData) {\r | |
1720 | return EFI_INVALID_PARAMETER;\r | |
1721 | }\r | |
1722 | \r | |
1723 | if ((Attributes & ~(EFI_ISA_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_ISA_IO_ATTRIBUTE_MEMORY_CACHED)) != 0) {\r | |
1724 | return EFI_UNSUPPORTED;\r | |
1725 | }\r | |
1726 | \r | |
1727 | PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (BASE_16MB - 1);\r | |
1728 | if (Type == AllocateAddress) {\r | |
1729 | if ((UINTN) (*HostAddress) >= BASE_16MB) {\r | |
1730 | return EFI_UNSUPPORTED;\r | |
1731 | } else {\r | |
1732 | PhysicalAddress = (UINTN) (*HostAddress);\r | |
1733 | }\r | |
1734 | }\r | |
1735 | \r | |
1736 | if (Type == AllocateAnyPages) {\r | |
1737 | Type = AllocateMaxAddress;\r | |
1738 | }\r | |
1739 | \r | |
1740 | Status = gBS->AllocatePages (Type, MemoryType, Pages, &PhysicalAddress);\r | |
1741 | if (EFI_ERROR (Status)) {\r | |
1742 | REPORT_STATUS_CODE (\r | |
1743 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
1744 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
1745 | );\r | |
1746 | return Status;\r | |
1747 | }\r | |
1748 | \r | |
1749 | *HostAddress = (VOID *) (UINTN) PhysicalAddress;\r | |
1750 | return Status;\r | |
1751 | }\r | |
1752 | \r | |
1753 | /**\r | |
1754 | Frees memory that was allocated with EFI_ISA_IO.AllocateBuffer(). \r | |
1755 | \r | |
1756 | @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r | |
1757 | @param[in] Pages The number of pages to free.\r | |
1758 | @param[in] HostAddress The base address of the allocated range.\r | |
1759 | \r | |
1760 | @retval EFI_SUCCESS The requested memory pages were freed.\r | |
1761 | @retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().\r | |
1762 | **/\r | |
1763 | EFI_STATUS\r | |
1764 | EFIAPI\r | |
1765 | IsaIoFreeBuffer (\r | |
1766 | IN EFI_ISA_IO_PROTOCOL *This,\r | |
1767 | IN UINTN Pages,\r | |
1768 | IN VOID *HostAddress\r | |
1769 | )\r | |
1770 | {\r | |
1771 | EFI_STATUS Status;\r | |
1772 | \r | |
1773 | //\r | |
1774 | // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for \r | |
1775 | // ISA Bus Master.\r | |
1776 | // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r | |
1777 | //\r | |
1778 | if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r | |
1779 | ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r | |
1780 | return EFI_UNSUPPORTED;\r | |
1781 | }\r | |
1782 | \r | |
1783 | Status = gBS->FreePages (\r | |
1784 | (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress,\r | |
1785 | Pages\r | |
1786 | );\r | |
1787 | if (EFI_ERROR (Status)) {\r | |
1788 | REPORT_STATUS_CODE (\r | |
1789 | EFI_ERROR_CODE | EFI_ERROR_MINOR,\r | |
1790 | EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r | |
1791 | );\r | |
1792 | }\r | |
1793 | \r | |
1794 | return Status;\r | |
1795 | }\r | |
1796 | \r |