1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
|
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
DeviceIo.h
Abstract:
Private Data definition for Device IO driver
--*/
#ifndef _DEVICE_IO_H
#define _DEVICE_IO_H
#define DEVICE_IO_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('d', 'e', 'v', 'I')
#define MAX_COMMON_BUFFER 0x00000000FFFFFFFF
typedef struct {
UINTN Signature;
EFI_HANDLE Handle;
EFI_DEVICE_IO_PROTOCOL DeviceIo;
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
UINT16 PrimaryBus;
UINT16 SubordinateBus;
} DEVICE_IO_PRIVATE_DATA;
#define DEVICE_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DEVICE_IO_PRIVATE_DATA, DeviceIo, DEVICE_IO_PRIVATE_DATA_SIGNATURE)
EFI_STATUS
DeviceIoConstructor (
IN EFI_HANDLE Handle,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
IN UINT16 PrimaryBus,
IN UINT16 SubordinateBus
)
/*++
Routine Description:
Initialize and install a Device IO protocol on a empty device path handle.
Arguments:
Handle - Handle of PCI RootBridge IO instance
PciRootBridgeIo - PCI RootBridge IO instance
DevicePath - Device Path of PCI RootBridge IO instance
PrimaryBus - Primary Bus
SubordinateBus - Subordinate Bus
Returns:
EFI_SUCCESS - This driver is added to ControllerHandle.
EFI_ALREADY_STARTED - This driver is already running on ControllerHandle.
Others - This driver does not support this device.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoMemRead (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform reading memory mapped I/O space of device.
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The destination buffer to store results.
Returns:
EFI_SUCCESS - The data was read from the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoMemWrite (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform writing memory mapped I/O space of device.
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The source buffer of data to be written.
Returns:
EFI_SUCCESS - The data was written to the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoIoRead (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform reading I/O space of device.
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The destination buffer to store results.
Returns:
EFI_SUCCESS - The data was read from the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoIoWrite (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform writing I/O space of device.
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The source buffer of data to be written.
Returns:
EFI_SUCCESS - The data was written to the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoPciRead (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform reading PCI configuration space of device
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The destination buffer to store results.
Returns:
EFI_SUCCESS - The data was read from the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoPciWrite (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_WIDTH Width,
IN UINT64 Address,
IN UINTN Count,
IN OUT VOID *Buffer
)
/*++
Routine Description:
Perform writing PCI configuration space of device.
Arguments:
This - A pointer to EFI_DEVICE_IO protocol instance.
Width - Width of I/O operations.
Address - The base address of I/O operations.
Count - The number of I/O operations to perform.
Bytes moves is Width size * Count, starting at Address.
Buffer - The source buffer of data to be written.
Returns:
EFI_SUCCESS - The data was written to the device.
EFI_INVALID_PARAMETER - Width is invalid.
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoPciDevicePath (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN UINT64 Address,
IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath
)
/*++
Routine Description:
Append a PCI device path node to another device path.
Arguments:
This - A pointer to EFI_DEVICE_IO_PROTOCOL.
Address - PCI bus,device, function.
PciDevicePath - PCI device path.
Returns:
Pointer to the appended PCI device path.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoMap (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_IO_OPERATION_TYPE Operation,
IN EFI_PHYSICAL_ADDRESS *HostAddress,
IN OUT UINTN *NumberOfBytes,
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
OUT VOID **Mapping
)
/*++
Routine Description:
Provides the device-specific addresses needed to access system memory.
Arguments:
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
Operation - Indicates if the bus master is going to read or write to system memory.
HostAddress - The system memory address to map to the device.
NumberOfBytes - On input the number of bytes to map. On output the number of bytes
that were mapped.
DeviceAddress - The resulting map address for the bus master device to use to access the
hosts HostAddress.
Mapping - A resulting value to pass to Unmap().
Returns:
EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.
EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.
EFI_UNSUPPORTED - The HostAddress cannot be mapped as a common buffer.
EFI_DEVICE_ERROR - The system hardware could not map the requested address.
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoUnmap (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN VOID *Mapping
)
/*++
Routine Description:
Completes the Map() operation and releases any corresponding resources.
Arguments:
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
Mapping - The mapping value returned from Map().
Returns:
EFI_SUCCESS - The range was unmapped.
EFI_DEVICE_ERROR - The data was not committed to the target system memory.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoAllocateBuffer (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN EFI_ALLOCATE_TYPE Type,
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages,
IN OUT EFI_PHYSICAL_ADDRESS *HostAddress
)
/*++
Routine Description:
Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.
Arguments:
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
Type - The type allocation to perform.
MemoryType - The type of memory to allocate, EfiBootServicesData or
EfiRuntimeServicesData.
Pages - The number of pages to allocate.
HostAddress - A pointer to store the base address of the allocated range.
Returns:
EFI_SUCCESS - The requested memory pages were allocated.
EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.
EFI_INVALID_PARAMETER - The requested memory type is invalid.
EFI_UNSUPPORTED - The requested PhysicalAddress is not supported on
this platform.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoFlush (
IN EFI_DEVICE_IO_PROTOCOL *This
)
/*++
Routine Description:
Flushes any posted write data to the device.
Arguments:
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
Returns:
EFI_SUCCESS - The buffers were flushed.
EFI_DEVICE_ERROR - The buffers were not flushed due to a hardware error.
--*/
;
EFI_STATUS
EFIAPI
DeviceIoFreeBuffer (
IN EFI_DEVICE_IO_PROTOCOL *This,
IN UINTN Pages,
IN EFI_PHYSICAL_ADDRESS HostAddress
)
/*++
Routine Description:
Frees pages that were allocated with AllocateBuffer().
Arguments:
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
Pages - The number of pages to free.
HostAddress - The base address of the range to free.
Returns:
EFI_SUCCESS - The requested memory pages were freed.
EFI_NOT_FOUND - The requested memory pages were not allocated with
AllocateBuffer().
EFI_INVALID_PARAMETER - HostAddress is not page aligned or Pages is invalid.
--*/
;
#endif
|
