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fc4d1ce5 OM |
1 | /** @file\r |
2 | Virtio Device\r | |
3 | \r | |
4 | DISCLAIMER: the VIRTIO_DEVICE_PROTOCOL introduced here is a work in progress,\r | |
5 | and should not be used outside of the EDK II tree.\r | |
6 | \r | |
7 | Copyright (c) 2013, ARM Ltd. All rights reserved.<BR>\r | |
87811526 | 8 | Copyright (c) 2017, AMD Inc, All rights reserved.<BR>\r |
fc4d1ce5 OM |
9 | \r |
10 | This program and the accompanying materials are licensed and made available\r | |
11 | under the terms and conditions of the BSD License which accompanies this\r | |
12 | distribution. The full text of the license may be found at\r | |
13 | http://opensource.org/licenses/bsd-license.php\r | |
14 | \r | |
15 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT\r | |
16 | WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
17 | \r | |
18 | **/\r | |
19 | \r | |
20 | #ifndef __VIRTIO_DEVICE_H__\r | |
21 | #define __VIRTIO_DEVICE_H__\r | |
22 | \r | |
07af4eee LE |
23 | #include <IndustryStandard/Virtio.h>\r |
24 | \r | |
a136bc3c BS |
25 | //\r |
26 | // VirtIo Specification Revision: Major[31:24].Minor[23:16].Revision[15:0]\r | |
27 | //\r | |
fc4d1ce5 OM |
28 | #define VIRTIO_SPEC_REVISION(major,minor,revision) \\r |
29 | ((((major) & 0xFF) << 24) | (((minor) & 0xFF) << 16) | ((revision) & 0xFFFF))\r | |
30 | \r | |
31 | #define VIRTIO_DEVICE_PROTOCOL_GUID { \\r | |
32 | 0xfa920010, 0x6785, 0x4941, {0xb6, 0xec, 0x49, 0x8c, 0x57, 0x9f, 0x16, 0x0a }\\r | |
33 | }\r | |
34 | \r | |
35 | typedef struct _VIRTIO_DEVICE_PROTOCOL VIRTIO_DEVICE_PROTOCOL;\r | |
36 | \r | |
87811526 BS |
37 | //\r |
38 | // VIRTIO Operation for VIRTIO_MAP_SHARED\r | |
39 | //\r | |
40 | typedef enum {\r | |
41 | //\r | |
42 | // A read operation from system memory by a bus master\r | |
43 | //\r | |
44 | VirtioOperationBusMasterRead,\r | |
45 | //\r | |
46 | // A write operation to system memory by a bus master\r | |
47 | //\r | |
48 | VirtioOperationBusMasterWrite,\r | |
49 | //\r | |
50 | // Provides both read and write access to system memory by both the\r | |
51 | // processor and a bus master\r | |
52 | //\r | |
53 | VirtioOperationBusMasterCommonBuffer,\r | |
54 | } VIRTIO_MAP_OPERATION;\r | |
55 | \r | |
fc4d1ce5 OM |
56 | /**\r |
57 | \r | |
58 | Read a word from the device-specific I/O region of the Virtio Header.\r | |
59 | \r | |
60 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
61 | \r | |
62 | @param[in] FieldOffset Source offset.\r | |
63 | \r | |
64 | @param[in] FieldSize Source field size in bytes, must be in {1, 2, 4, 8}.\r | |
65 | \r | |
66 | @param[in] BufferSize Number of bytes available in the target buffer. Must\r | |
67 | equal FieldSize.\r | |
68 | \r | |
69 | @param[out] Buffer Target buffer.\r | |
70 | \r | |
71 | @retval EFI_SUCCESS The data was read successfully.\r | |
72 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
73 | provided address offset and read size.\r | |
74 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a\r | |
75 | lack of resources.\r | |
76 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
77 | \r | |
78 | **/\r | |
79 | typedef\r | |
80 | EFI_STATUS\r | |
81 | (EFIAPI *VIRTIO_DEVICE_READ) (\r | |
82 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
83 | IN UINTN FieldOffset,\r | |
84 | IN UINTN FieldSize,\r | |
85 | IN UINTN BufferSize,\r | |
86 | OUT VOID *Buffer\r | |
87 | );\r | |
88 | \r | |
89 | /**\r | |
90 | \r | |
91 | Write a word to the device-specific I/O region of the Virtio Header.\r | |
92 | \r | |
93 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
94 | \r | |
95 | @param[in] FieldOffset Destination offset.\r | |
96 | \r | |
97 | @param[in] FieldSize Destination field size in bytes,\r | |
98 | must be in {1, 2, 4, 8}.\r | |
99 | \r | |
100 | @param[out] Value Value to write.\r | |
101 | \r | |
102 | @retval EFI_SUCCESS The data was written successfully.\r | |
103 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
104 | provided address offset and write size.\r | |
105 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a\r | |
106 | lack of resources.\r | |
107 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
108 | \r | |
109 | **/\r | |
110 | typedef\r | |
111 | EFI_STATUS\r | |
112 | (EFIAPI *VIRTIO_DEVICE_WRITE) (\r | |
113 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
114 | IN UINTN FieldOffset,\r | |
115 | IN UINTN FieldSize,\r | |
116 | IN UINT64 Value\r | |
117 | );\r | |
118 | \r | |
119 | /**\r | |
120 | Read the device features field from the Virtio Header.\r | |
121 | \r | |
122 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
123 | \r | |
bc8fde6f | 124 | @param[out] DeviceFeatures The device features field.\r |
fc4d1ce5 OM |
125 | \r |
126 | @retval EFI_SUCCESS The data was read successfully.\r | |
127 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
128 | provided address offset and read size.\r | |
129 | @retval EFI_INVALID_PARAMETER DeviceFeatures is NULL\r | |
130 | **/\r | |
131 | typedef\r | |
132 | EFI_STATUS\r | |
133 | (EFIAPI *VIRTIO_GET_DEVICE_FEATURES) (\r | |
134 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
bc8fde6f | 135 | OUT UINT64 *DeviceFeatures\r |
fc4d1ce5 OM |
136 | );\r |
137 | \r | |
138 | /**\r | |
139 | Write the guest features field in the Virtio Header.\r | |
140 | \r | |
141 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
142 | \r | |
bc8fde6f | 143 | @param[in] Features The guest features field\r |
fc4d1ce5 OM |
144 | \r |
145 | **/\r | |
146 | typedef\r | |
147 | EFI_STATUS\r | |
148 | (EFIAPI *VIRTIO_SET_GUEST_FEATURES) (\r | |
149 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
bc8fde6f | 150 | IN UINT64 Features\r |
fc4d1ce5 OM |
151 | );\r |
152 | \r | |
fc4d1ce5 | 153 | /**\r |
07af4eee | 154 | Write the queue address field(s) in the Virtio Header.\r |
fc4d1ce5 OM |
155 | \r |
156 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
157 | \r | |
07af4eee LE |
158 | @param[in] Ring The initialized VRING object to take the\r |
159 | addresses from.\r | |
fc4d1ce5 OM |
160 | \r |
161 | @retval EFI_SUCCESS The data was written successfully.\r | |
162 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
163 | provided address offset and write size.\r | |
164 | **/\r | |
165 | typedef\r | |
166 | EFI_STATUS\r | |
167 | (EFIAPI *VIRTIO_SET_QUEUE_ADDRESS) (\r | |
168 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
07af4eee | 169 | IN VRING *Ring\r |
fc4d1ce5 OM |
170 | );\r |
171 | \r | |
172 | /**\r | |
173 | \r | |
174 | Write the queue select field in the Virtio Header.\r | |
175 | \r | |
176 | Writing to the queue select field sets the index of the queue to which\r | |
177 | operations such as SetQueueAlign and GetQueueNumMax apply.\r | |
178 | \r | |
179 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
180 | \r | |
181 | @param[in] Index The index of the queue to select\r | |
182 | \r | |
183 | @retval EFI_SUCCESS The data was written successfully.\r | |
184 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
185 | provided address offset and write size.\r | |
186 | **/\r | |
187 | typedef\r | |
188 | EFI_STATUS\r | |
189 | (EFIAPI *VIRTIO_SET_QUEUE_SEL) (\r | |
190 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
191 | IN UINT16 Index\r | |
192 | );\r | |
193 | \r | |
194 | /**\r | |
195 | \r | |
196 | Write the queue notify field in the Virtio Header.\r | |
197 | \r | |
198 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
199 | \r | |
200 | @param[in] Address The 32-bit Queue Notify field\r | |
201 | \r | |
202 | @retval EFI_SUCCESS The data was written successfully.\r | |
203 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
204 | provided address offset and write size.\r | |
205 | **/\r | |
206 | typedef\r | |
207 | EFI_STATUS\r | |
208 | (EFIAPI *VIRTIO_SET_QUEUE_NOTIFY) (\r | |
209 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
210 | IN UINT16 Index\r | |
211 | );\r | |
212 | \r | |
213 | /**\r | |
214 | Write the queue alignment field in the Virtio Header.\r | |
215 | \r | |
216 | The queue to which the alignment applies is selected by the Queue Select\r | |
217 | field.\r | |
218 | \r | |
219 | Note: This operation is not implemented by the VirtIo over PCI. The PCI\r | |
220 | implementation of this protocol returns EFI_SUCCESS.\r | |
221 | \r | |
222 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
223 | \r | |
224 | @param[in] Alignment The alignment boundary of the Used Ring in bytes.\r | |
225 | Must be a power of 2.\r | |
226 | \r | |
227 | @retval EFI_SUCCESS The data was written successfully.\r | |
228 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
229 | provided address offset and write size.\r | |
230 | **/\r | |
231 | typedef\r | |
232 | EFI_STATUS\r | |
233 | (EFIAPI *VIRTIO_SET_QUEUE_ALIGN) (\r | |
234 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
235 | IN UINT32 Alignment\r | |
236 | );\r | |
237 | \r | |
238 | /**\r | |
239 | Write the guest page size.\r | |
240 | \r | |
241 | Note: This operation is not implemented by the VirtIo over PCI. The PCI\r | |
242 | implementation of this protocol returns EFI_SUCCESS.\r | |
243 | \r | |
244 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
245 | \r | |
246 | @param[in] PageSize Size of the Guest page in bytes.\r | |
247 | Must be a power of 2.\r | |
248 | \r | |
249 | @retval EFI_SUCCESS The data was written successfully.\r | |
250 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
251 | provided address offset and write size.\r | |
252 | **/\r | |
253 | typedef\r | |
254 | EFI_STATUS\r | |
255 | (EFIAPI *VIRTIO_SET_PAGE_SIZE) (\r | |
256 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
257 | IN UINT32 PageSize\r | |
258 | );\r | |
259 | \r | |
260 | /**\r | |
261 | \r | |
262 | Get the size of the virtqueue selected by the queue select field.\r | |
263 | \r | |
264 | See Virtio spec Section 2.3\r | |
265 | \r | |
266 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
267 | \r | |
268 | @param[out] QueueNumMax The size of the virtqueue in bytes.\r | |
269 | Always a power of 2.\r | |
270 | \r | |
271 | @retval EFI_SUCCESS The data was read successfully.\r | |
272 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
273 | provided address offset and read size.\r | |
274 | @retval EFI_INVALID_PARAMETER QueueNumMax is NULL\r | |
275 | **/\r | |
276 | typedef\r | |
277 | EFI_STATUS\r | |
278 | (EFIAPI *VIRTIO_GET_QUEUE_NUM_MAX) (\r | |
279 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
280 | OUT UINT16 *QueueNumMax\r | |
281 | );\r | |
282 | \r | |
283 | /**\r | |
284 | \r | |
285 | Write to the QueueNum field in the Virtio Header.\r | |
286 | \r | |
287 | This function only applies to Virtio-MMIO and may be a stub for other\r | |
288 | implementations. See Virtio Spec appendix X.\r | |
289 | \r | |
290 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
291 | \r | |
292 | @param[in] QueueSize The number of elements in the queue.\r | |
293 | \r | |
294 | @retval EFI_SUCCESS The data was written successfully.\r | |
295 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
296 | provided address offset and write size.\r | |
297 | **/\r | |
298 | typedef\r | |
299 | EFI_STATUS\r | |
300 | (EFIAPI *VIRTIO_SET_QUEUE_NUM) (\r | |
301 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
302 | IN UINT16 QueueSize\r | |
303 | );\r | |
304 | \r | |
305 | /**\r | |
306 | \r | |
307 | Get the DeviceStatus field from the Virtio Header.\r | |
308 | \r | |
309 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
310 | \r | |
311 | @param[out] DeviceStatus The 8-bit value for the Device status field\r | |
312 | \r | |
313 | @retval EFI_SUCCESS The data was read successfully.\r | |
314 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
315 | provided address offset and read size.\r | |
316 | @retval EFI_INVALID_PARAMETER DeviceStatus is NULL\r | |
317 | **/\r | |
318 | typedef\r | |
319 | EFI_STATUS\r | |
320 | (EFIAPI *VIRTIO_GET_DEVICE_STATUS) (\r | |
321 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
322 | OUT UINT8 *DeviceStatus\r | |
323 | );\r | |
324 | \r | |
325 | /**\r | |
326 | \r | |
327 | Write the DeviceStatus field in the Virtio Header.\r | |
328 | \r | |
329 | @param[in] This This instance of VIRTIO_DEVICE_PROTOCOL\r | |
330 | \r | |
331 | @param[in] DeviceStatus The 8-bit value for the Device status field\r | |
332 | \r | |
333 | @retval EFI_SUCCESS The data was written successfully.\r | |
334 | @retval EFI_UNSUPPORTED The underlying IO device doesn't support the\r | |
335 | provided address offset and write size.\r | |
336 | **/\r | |
337 | typedef\r | |
338 | EFI_STATUS\r | |
339 | (EFIAPI *VIRTIO_SET_DEVICE_STATUS) (\r | |
340 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
341 | IN UINT8 DeviceStatus\r | |
342 | );\r | |
343 | \r | |
87811526 BS |
344 | /**\r |
345 | \r | |
346 | Allocates pages that are suitable for an VirtioOperationBusMasterCommonBuffer\r | |
347 | mapping. This means that the buffer allocated by this function supports\r | |
348 | simultaneous access by both the processor and the bus master. The device\r | |
349 | address that the bus master uses to access the buffer must be retrieved with\r | |
350 | a call to VIRTIO_MAP_SHARED.\r | |
351 | \r | |
352 | @param[in] This The protocol instance pointer.\r | |
353 | \r | |
354 | @param[in] Pages The number of pages to allocate.\r | |
355 | \r | |
356 | @param[in,out] HostAddress A pointer to store the system memory base\r | |
357 | address of the allocated range.\r | |
358 | \r | |
359 | @retval EFI_SUCCESS The requested memory pages were allocated.\r | |
360 | @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r | |
361 | \r | |
362 | **/\r | |
363 | typedef\r | |
364 | EFI_STATUS\r | |
365 | (EFIAPI *VIRTIO_ALLOCATE_SHARED)(\r | |
366 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
367 | IN UINTN Pages,\r | |
368 | IN OUT VOID **HostAddress\r | |
369 | );\r | |
370 | \r | |
371 | /**\r | |
372 | Frees memory that was allocated with VIRTIO_ALLOCATE_SHARED.\r | |
373 | \r | |
374 | @param[in] This The protocol instance pointer.\r | |
375 | \r | |
376 | @param[in] Pages The number of pages to free.\r | |
377 | \r | |
378 | @param[in] HostAddress The system memory base address of the allocated\r | |
379 | range.\r | |
380 | \r | |
381 | **/\r | |
382 | typedef\r | |
383 | VOID\r | |
384 | (EFIAPI *VIRTIO_FREE_SHARED)(\r | |
385 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
386 | IN UINTN Pages,\r | |
387 | IN VOID *HostAddress\r | |
388 | );\r | |
389 | \r | |
390 | /**\r | |
391 | Provides the virtio device address required to access system memory from a\r | |
392 | DMA bus master.\r | |
393 | \r | |
394 | The interface follows the same usage pattern as defined in UEFI spec 2.6\r | |
395 | (Section 13.2 PCI Root Bridge I/O Protocol)\r | |
396 | \r | |
397 | @param[in] This The protocol instance pointer.\r | |
398 | \r | |
399 | @param[in] Operation Indicates if the bus master is going to\r | |
400 | read or write to system memory.\r | |
401 | \r | |
402 | @param[in] HostAddress The system memory address to map to shared\r | |
403 | buffer address.\r | |
404 | \r | |
405 | @param[in,out] NumberOfBytes On input the number of bytes to map.\r | |
406 | On output the number of bytes that were\r | |
407 | mapped.\r | |
408 | \r | |
409 | @param[out] DeviceAddress The resulting shared map address for the\r | |
410 | bus master to access the hosts HostAddress.\r | |
411 | \r | |
412 | @param[out] Mapping A resulting token to pass to\r | |
413 | VIRTIO_UNMAP_SHARED.\r | |
414 | \r | |
415 | @retval EFI_SUCCESS The range was mapped for the returned\r | |
416 | NumberOfBytes.\r | |
417 | @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a\r | |
418 | common buffer.\r | |
419 | @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r | |
420 | @retval EFI_OUT_OF_RESOURCES The request could not be completed due to\r | |
421 | a lack of resources.\r | |
422 | @retval EFI_DEVICE_ERROR The system hardware could not map the\r | |
423 | requested address.\r | |
424 | **/\r | |
425 | \r | |
426 | typedef\r | |
427 | EFI_STATUS\r | |
428 | (EFIAPI *VIRTIO_MAP_SHARED) (\r | |
429 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
430 | IN VIRTIO_MAP_OPERATION Operation,\r | |
431 | IN VOID *HostAddress,\r | |
432 | IN OUT UINTN *NumberOfBytes,\r | |
433 | OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r | |
434 | OUT VOID **Mapping\r | |
435 | );\r | |
436 | \r | |
437 | /**\r | |
438 | Completes the VIRTIO_MAP_SHARED operation and releases any corresponding\r | |
439 | resources.\r | |
440 | \r | |
441 | @param[in] This The protocol instance pointer.\r | |
442 | \r | |
443 | @param[in] Mapping The mapping token returned from\r | |
444 | VIRTIO_MAP_SHARED.\r | |
445 | \r | |
446 | @retval EFI_SUCCESS The range was unmapped.\r | |
447 | @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by\r | |
448 | VIRTIO_MAP_SHARED. Passing an invalid Mapping\r | |
449 | token can cause undefined behavior.\r | |
450 | @retval EFI_DEVICE_ERROR The data was not committed to the target\r | |
451 | system memory.\r | |
452 | **/\r | |
453 | typedef\r | |
454 | EFI_STATUS\r | |
455 | (EFIAPI *VIRTIO_UNMAP_SHARED)(\r | |
456 | IN VIRTIO_DEVICE_PROTOCOL *This,\r | |
457 | IN VOID *Mapping\r | |
458 | );\r | |
fc4d1ce5 OM |
459 | \r |
460 | ///\r | |
461 | /// This protocol provides an abstraction over the VirtIo transport layer\r | |
462 | ///\r | |
463 | /// DISCLAIMER: this protocol is a work in progress, and should not be used\r | |
464 | /// outside of the EDK II tree.\r | |
465 | ///\r | |
466 | struct _VIRTIO_DEVICE_PROTOCOL {\r | |
a136bc3c BS |
467 | //\r |
468 | // VirtIo Specification Revision encoded with VIRTIO_SPEC_REVISION()\r | |
469 | //\r | |
fc4d1ce5 | 470 | UINT32 Revision;\r |
a136bc3c BS |
471 | //\r |
472 | // From the Virtio Spec\r | |
473 | //\r | |
fc4d1ce5 OM |
474 | INT32 SubSystemDeviceId;\r |
475 | \r | |
476 | VIRTIO_GET_DEVICE_FEATURES GetDeviceFeatures;\r | |
477 | VIRTIO_SET_GUEST_FEATURES SetGuestFeatures;\r | |
478 | \r | |
fc4d1ce5 OM |
479 | VIRTIO_SET_QUEUE_ADDRESS SetQueueAddress;\r |
480 | \r | |
481 | VIRTIO_SET_QUEUE_SEL SetQueueSel;\r | |
482 | \r | |
483 | VIRTIO_SET_QUEUE_NOTIFY SetQueueNotify;\r | |
484 | \r | |
485 | VIRTIO_SET_QUEUE_ALIGN SetQueueAlign;\r | |
486 | VIRTIO_SET_PAGE_SIZE SetPageSize;\r | |
487 | \r | |
488 | VIRTIO_GET_QUEUE_NUM_MAX GetQueueNumMax;\r | |
489 | VIRTIO_SET_QUEUE_NUM SetQueueNum;\r | |
490 | \r | |
491 | VIRTIO_GET_DEVICE_STATUS GetDeviceStatus;\r | |
492 | VIRTIO_SET_DEVICE_STATUS SetDeviceStatus;\r | |
493 | \r | |
a136bc3c | 494 | //\r |
fc4d1ce5 | 495 | // Functions to read/write Device Specific headers\r |
a136bc3c | 496 | //\r |
fc4d1ce5 OM |
497 | VIRTIO_DEVICE_WRITE WriteDevice;\r |
498 | VIRTIO_DEVICE_READ ReadDevice;\r | |
87811526 BS |
499 | \r |
500 | //\r | |
501 | // Functions to allocate, free, map and unmap shared buffer\r | |
502 | //\r | |
503 | VIRTIO_ALLOCATE_SHARED AllocateSharedPages;\r | |
504 | VIRTIO_FREE_SHARED FreeSharedPages;\r | |
505 | VIRTIO_MAP_SHARED MapSharedBuffer;\r | |
506 | VIRTIO_UNMAP_SHARED UnmapSharedBuffer;\r | |
fc4d1ce5 OM |
507 | };\r |
508 | \r | |
509 | extern EFI_GUID gVirtioDeviceProtocolGuid;\r | |
510 | \r | |
511 | #endif\r |