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[mirror_edk2.git] / EdkModulePkg / Bus / Usb / UsbMassStorage / Dxe / UsbMassStorage.c
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1/*++\r
2\r
3Copyright (c) 2006, Intel Corporation \r
4All rights reserved. This program and the accompanying materials \r
5are licensed and made available under the terms and conditions of the BSD License \r
6which accompanies this distribution. The full text of the license may be found at \r
7http://opensource.org/licenses/bsd-license.php \r
8 \r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
11\r
12Module Name:\r
13\r
14 UsbMassStorage.c\r
15 \r
16Abstract:\r
17\r
18 USB Mass Storage Driver\r
19\r
20Revision History\r
21\r
22--*/\r
23\r
24#include "UsbMassStorage.h"\r
25#include "UsbMassStorageHelper.h"\r
26\r
27extern EFI_COMPONENT_NAME_PROTOCOL gUsbMassStorageComponentName;\r
28\r
29//\r
30// Prototypes\r
31// Driver model protocol interface\r
32//\r
33EFI_STATUS\r
34EFIAPI\r
35USBMassStorageDriverBindingEntryPoint (\r
36 IN EFI_HANDLE ImageHandle,\r
37 IN EFI_SYSTEM_TABLE *SystemTable\r
38 );\r
39\r
40EFI_STATUS\r
41EFIAPI\r
42USBFloppyDriverBindingSupported (\r
43 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
44 IN EFI_HANDLE Controller,\r
45 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
46 );\r
47\r
48EFI_STATUS\r
49EFIAPI\r
50USBFloppyDriverBindingStart (\r
51 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
52 IN EFI_HANDLE Controller,\r
53 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
54 );\r
55\r
56EFI_STATUS\r
57EFIAPI\r
58USBFloppyDriverBindingStop (\r
59 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
60 IN EFI_HANDLE Controller,\r
61 IN UINTN NumberOfChildren,\r
62 IN EFI_HANDLE *ChildHandleBuffer\r
63 );\r
64\r
65//\r
66// Block I/O Protocol Interface\r
67//\r
68STATIC\r
69EFI_STATUS\r
70EFIAPI\r
71USBFloppyReset (\r
72 IN EFI_BLOCK_IO_PROTOCOL *This,\r
73 IN BOOLEAN ExtendedVerification\r
74 );\r
75\r
76STATIC\r
77EFI_STATUS\r
78EFIAPI\r
79USBFloppyReadBlocks (\r
80 IN EFI_BLOCK_IO_PROTOCOL *This,\r
81 IN UINT32 MediaId,\r
82 IN EFI_LBA LBA,\r
83 IN UINTN BufferSize,\r
84 OUT VOID *Buffer\r
85 );\r
86\r
87STATIC\r
88EFI_STATUS\r
89EFIAPI\r
90USBFloppyWriteBlocks (\r
91 IN EFI_BLOCK_IO_PROTOCOL *This,\r
92 IN UINT32 MediaId,\r
93 IN EFI_LBA LBA,\r
94 IN UINTN BufferSize,\r
95 IN VOID *Buffer\r
96 );\r
97\r
98STATIC\r
99EFI_STATUS\r
100EFIAPI\r
101USBFloppyFlushBlocks (\r
102 IN EFI_BLOCK_IO_PROTOCOL *This\r
103 );\r
104\r
105//\r
106// USB Floppy Driver Global Variables\r
107//\r
108EFI_DRIVER_BINDING_PROTOCOL gUSBFloppyDriverBinding = {\r
109 USBFloppyDriverBindingSupported,\r
110 USBFloppyDriverBindingStart,\r
111 USBFloppyDriverBindingStop,\r
112 0xa,\r
113 NULL,\r
114 NULL\r
115};\r
116\r
117EFI_STATUS\r
118EFIAPI\r
119USBFloppyDriverBindingSupported (\r
120 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
121 IN EFI_HANDLE Controller,\r
122 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
123 )\r
124/*++\r
125\r
126 Routine Description:\r
127 Test to see if this driver supports ControllerHandle. Any ControllerHandle\r
128 that has UsbHcProtocol installed will be supported.\r
129\r
130 Arguments:\r
131 This - Protocol instance pointer.\r
132 Controller - Handle of device to test\r
133 RemainingDevicePath - Not used\r
134\r
135 Returns:\r
136 EFI_SUCCESS - This driver supports this device.\r
137 EFI_UNSUPPORTED - This driver does not support this device.\r
138\r
139--*/\r
140{\r
141 EFI_STATUS OpenStatus;\r
142 EFI_USB_ATAPI_PROTOCOL *AtapiProtocol;\r
143\r
144 //\r
145 // check whether EFI_USB_ATAPI_PROTOCOL exists, if it does,\r
146 // then the controller must be a USB Mass Storage Controller\r
147 //\r
148 OpenStatus = gBS->OpenProtocol (\r
149 Controller,\r
150 &gEfiUsbAtapiProtocolGuid,\r
151 (VOID **) &AtapiProtocol,\r
152 This->DriverBindingHandle,\r
153 Controller,\r
154 EFI_OPEN_PROTOCOL_BY_DRIVER\r
155 );\r
156 if (EFI_ERROR (OpenStatus)) {\r
157 return OpenStatus;\r
158 }\r
159\r
160 gBS->CloseProtocol (\r
161 Controller,\r
162 &gEfiUsbAtapiProtocolGuid,\r
163 This->DriverBindingHandle,\r
164 Controller\r
165 );\r
166\r
167 return EFI_SUCCESS;\r
168}\r
169\r
170EFI_STATUS\r
171EFIAPI\r
172USBFloppyDriverBindingStart (\r
173 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
174 IN EFI_HANDLE Controller,\r
175 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
176 )\r
177/*++\r
178\r
179 Routine Description:\r
180 Starting the Usb Bus Driver\r
181\r
182 Arguments:\r
183 This - Protocol instance pointer.\r
184 Controller - Handle of device to test\r
185 RemainingDevicePath - Not used\r
186\r
187 Returns:\r
188 EFI_SUCCESS - This driver supports this device.\r
189 EFI_UNSUPPORTED - This driver does not support this device.\r
190 EFI_DEVICE_ERROR - This driver cannot be started due to device\r
191 Error\r
192 EFI_OUT_OF_RESOURCES- Can't allocate memory resources\r
193 EFI_ALREADY_STARTED - Thios driver has been started\r
194--*/\r
195{ \r
196 EFI_STATUS Status; \r
197 EFI_USB_ATAPI_PROTOCOL *AtapiProtocol;\r
198 USB_FLOPPY_DEV *UsbFloppyDevice;\r
199 \r
200 UsbFloppyDevice = NULL;\r
201 //\r
202 // Check whether Usb Atapi Protocol attached on the controller handle.\r
203 //\r
204 Status = gBS->OpenProtocol (\r
205 Controller,\r
206 &gEfiUsbAtapiProtocolGuid,\r
207 (VOID **) &AtapiProtocol,\r
208 This->DriverBindingHandle,\r
209 Controller,\r
210 EFI_OPEN_PROTOCOL_BY_DRIVER\r
211 );\r
212 if (EFI_ERROR (Status)) {\r
213 return Status;\r
214 }\r
215\r
216 Status = gBS->AllocatePool (\r
217 EfiBootServicesData,\r
218 sizeof (USB_FLOPPY_DEV),\r
219 (VOID **) &UsbFloppyDevice\r
220 );\r
221 if (EFI_ERROR (Status)) {\r
222 gBS->CloseProtocol (\r
223 Controller,\r
224 &gEfiUsbAtapiProtocolGuid,\r
225 This->DriverBindingHandle,\r
226 Controller\r
227 );\r
228 return Status;\r
229 }\r
230\r
231 ZeroMem (UsbFloppyDevice, sizeof (USB_FLOPPY_DEV));\r
232\r
233 UsbFloppyDevice->Handle = Controller;\r
234 UsbFloppyDevice->BlkIo.Media = &UsbFloppyDevice->BlkMedia;\r
235 UsbFloppyDevice->Signature = USB_FLOPPY_DEV_SIGNATURE;\r
236 UsbFloppyDevice->BlkIo.Reset = USBFloppyReset;\r
237 UsbFloppyDevice->BlkIo.ReadBlocks = USBFloppyReadBlocks;\r
238 UsbFloppyDevice->BlkIo.WriteBlocks = USBFloppyWriteBlocks;\r
239 UsbFloppyDevice->BlkIo.FlushBlocks = USBFloppyFlushBlocks;\r
240 UsbFloppyDevice->AtapiProtocol = AtapiProtocol;\r
241\r
242 //\r
243 // Identify drive type and retrieve media information.\r
244 //\r
245 Status = USBFloppyIdentify (UsbFloppyDevice);\r
246 if (EFI_ERROR (Status)) {\r
247 if (UsbFloppyDevice->SenseData != NULL) {\r
248 gBS->FreePool (UsbFloppyDevice->SenseData);\r
249 }\r
250\r
251 gBS->FreePool (UsbFloppyDevice);\r
252 gBS->CloseProtocol (\r
253 Controller,\r
254 &gEfiUsbAtapiProtocolGuid,\r
255 This->DriverBindingHandle,\r
256 Controller\r
257 );\r
258 return Status;\r
259 }\r
260 //\r
261 // Install Block I/O protocol for the usb floppy device.\r
262 //\r
263 Status = gBS->InstallProtocolInterface (\r
264 &Controller,\r
265 &gEfiBlockIoProtocolGuid,\r
266 EFI_NATIVE_INTERFACE,\r
267 &UsbFloppyDevice->BlkIo\r
268 );\r
269 if (EFI_ERROR (Status)) {\r
270 if (UsbFloppyDevice->SenseData != NULL) {\r
271 gBS->FreePool (UsbFloppyDevice->SenseData);\r
272 }\r
273\r
274 gBS->FreePool (UsbFloppyDevice);\r
275 gBS->CloseProtocol (\r
276 Controller,\r
277 &gEfiUsbAtapiProtocolGuid,\r
278 This->DriverBindingHandle,\r
279 Controller\r
280 );\r
281 return Status;\r
282 }\r
283\r
284 return EFI_SUCCESS;\r
285\r
286}\r
287\r
288\r
289EFI_STATUS\r
290EFIAPI\r
291USBFloppyDriverBindingStop (\r
292 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
293 IN EFI_HANDLE Controller,\r
294 IN UINTN NumberOfChildren,\r
295 IN EFI_HANDLE *ChildHandleBuffer\r
296 )\r
297/*++\r
298\r
299 Routine Description:\r
300 Stop this driver on ControllerHandle. Support stoping any child handles\r
301 created by this driver.\r
302\r
303 Arguments:\r
304 This - Protocol instance pointer.\r
305 Controller - Handle of device to stop driver on\r
306 NumberOfChildren - Number of Children in the ChildHandleBuffer\r
307 ChildHandleBuffer - List of handles for the children we need to stop.\r
308\r
309 Returns:\r
310 EFI_SUCCESS\r
311 EFI_DEVICE_ERROR\r
312 others\r
313\r
314--*/ \r
315{\r
316 EFI_STATUS Status;\r
317 USB_FLOPPY_DEV *UsbFloppyDevice;\r
318 EFI_BLOCK_IO_PROTOCOL *BlkIo;\r
319\r
320 //\r
321 // First find USB_FLOPPY_DEV\r
322 //\r
323 gBS->OpenProtocol (\r
324 Controller,\r
325 &gEfiBlockIoProtocolGuid,\r
326 (VOID **) &BlkIo,\r
327 This->DriverBindingHandle,\r
328 Controller,\r
329 EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
330 );\r
331\r
332 UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (BlkIo);\r
333\r
334 //\r
335 // Uninstall Block I/O protocol from the device handle\r
336 //\r
337 Status = gBS->UninstallProtocolInterface (\r
338 Controller,\r
339 &gEfiBlockIoProtocolGuid,\r
340 &UsbFloppyDevice->BlkIo\r
341 );\r
342 if (EFI_ERROR (Status)) {\r
343 return Status;\r
344 }\r
345 //\r
346 // Stop using EFI_USB_ATAPI_PROTOCOL\r
347 //\r
348 gBS->CloseProtocol (\r
349 Controller,\r
350 &gEfiUsbAtapiProtocolGuid,\r
351 This->DriverBindingHandle,\r
352 Controller\r
353 );\r
354\r
355 if (UsbFloppyDevice->SenseData != NULL) {\r
356 gBS->FreePool (UsbFloppyDevice->SenseData);\r
357 }\r
358\r
359 gBS->FreePool (UsbFloppyDevice);\r
360\r
361 return EFI_SUCCESS;\r
362}\r
363\r
364\r
365STATIC\r
366EFI_STATUS\r
367EFIAPI\r
368USBFloppyReset (\r
369 IN EFI_BLOCK_IO_PROTOCOL *This,\r
370 IN BOOLEAN ExtendedVerification\r
371 )\r
372/*++\r
373\r
374 Routine Description:\r
375 Implements EFI_BLOCK_IO_PROTOCOL.Reset() function.\r
376 \r
377 Arguments:\r
378 This The EFI_BLOCK_IO_PROTOCOL instance.\r
379 ExtendedVerification\r
380 Indicates that the driver may perform a more exhaustive\r
381 verification operation of the device during reset.\r
382 (This parameter is ingored in this driver.)\r
383 \r
384 Returns: \r
385 EFI_SUCCESS - Success\r
386--*/ \r
387{\r
388 USB_FLOPPY_DEV *UsbFloppyDevice;\r
389 EFI_USB_ATAPI_PROTOCOL *UsbAtapiInterface;\r
390 EFI_STATUS Status;\r
391\r
392 UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);\r
393\r
394 UsbAtapiInterface = UsbFloppyDevice->AtapiProtocol;\r
395\r
396 //\r
397 // directly calling EFI_USB_ATAPI_PROTOCOL.Reset() to implement reset.\r
398 //\r
399 Status = UsbAtapiInterface->UsbAtapiReset (UsbAtapiInterface, TRUE);\r
400\r
401 return Status;\r
402}\r
403\r
404STATIC\r
405EFI_STATUS\r
406EFIAPI\r
407USBFloppyReadBlocks (\r
408 IN EFI_BLOCK_IO_PROTOCOL *This,\r
409 IN UINT32 MediaId,\r
410 IN EFI_LBA LBA,\r
411 IN UINTN BufferSize,\r
412 OUT VOID *Buffer\r
413 )\r
414/*++\r
415\r
416 Routine Description:\r
417 Implements EFI_BLOCK_IO_PROTOCOL.ReadBlocks() function.\r
418 \r
419 Arguments:\r
420 This The EFI_BLOCK_IO_PROTOCOL instance.\r
421 MediaId The media id that the read request is for.\r
422 LBA The starting logical block address to read from on the device.\r
423 BufferSize\r
424 The size of the Buffer in bytes. This must be a multiple of \r
425 the intrinsic block size of the device.\r
426 Buffer A pointer to the destination buffer for the data. The caller \r
427 is responsible for either having implicit or explicit ownership\r
428 of the buffer. \r
429 \r
430 Returns: \r
431 EFI_INVALID_PARAMETER - Parameter is error\r
432 EFI_SUCCESS - Success \r
433 EFI_DEVICE_ERROR - Hardware Error\r
434 EFI_NO_MEDIA - No media\r
435 EFI_MEDIA_CHANGED - Media Change\r
436 EFI_BAD_BUFFER_SIZE - Buffer size is bad\r
437 --*/ \r
438{\r
439 USB_FLOPPY_DEV *UsbFloppyDevice;\r
440 EFI_STATUS Status;\r
441 EFI_BLOCK_IO_MEDIA *Media;\r
442 UINTN BlockSize;\r
443 UINTN NumberOfBlocks;\r
444 BOOLEAN MediaChange;\r
445 EFI_TPL OldTpl;\r
446\r
447 OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r
448 Status = EFI_SUCCESS;\r
449 MediaChange = FALSE;\r
450\r
451 UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);\r
452\r
453 //\r
454 // Check parameters\r
455 //\r
456 if (!Buffer) {\r
457 Status = EFI_INVALID_PARAMETER;\r
458 goto Done;\r
459 }\r
460\r
461 if (BufferSize == 0) {\r
462 Status = EFI_SUCCESS;\r
463 goto Done;\r
464 }\r
465\r
466 UsbFloppyTestUnitReady (UsbFloppyDevice);\r
467\r
468 Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);\r
469 if (EFI_ERROR (Status)) {\r
470\r
471 Status = EFI_DEVICE_ERROR;\r
472 goto Done;\r
473 }\r
474\r
475 if (MediaChange) {\r
476 gBS->RestoreTPL (OldTpl);\r
477 gBS->ReinstallProtocolInterface (\r
478 UsbFloppyDevice->Handle,\r
479 &gEfiBlockIoProtocolGuid,\r
480 &UsbFloppyDevice->BlkIo,\r
481 &UsbFloppyDevice->BlkIo\r
482 );\r
483 gBS->RaiseTPL (EFI_TPL_NOTIFY);\r
484 }\r
485\r
486 Media = UsbFloppyDevice->BlkIo.Media;\r
487 BlockSize = Media->BlockSize;\r
488 NumberOfBlocks = BufferSize / BlockSize;\r
489\r
490 if (!(Media->MediaPresent)) {\r
491 Status = EFI_NO_MEDIA;\r
492 goto Done;\r
493 }\r
494\r
495 if (MediaId != Media->MediaId) {\r
496 Status = EFI_MEDIA_CHANGED;\r
497 goto Done;\r
498 }\r
499\r
500 if (BufferSize % BlockSize != 0) {\r
501 Status = EFI_BAD_BUFFER_SIZE;\r
502 goto Done;\r
503 }\r
504\r
505 if (LBA > Media->LastBlock) {\r
506 Status = EFI_INVALID_PARAMETER;\r
507 goto Done;\r
508 }\r
509\r
510 if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {\r
511 Status = EFI_INVALID_PARAMETER;\r
512 goto Done;\r
513 }\r
514\r
515 if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {\r
516 Status = EFI_INVALID_PARAMETER;\r
517 goto Done;\r
518 }\r
519\r
520 if (!EFI_ERROR (Status)) {\r
521\r
522 Status = USBFloppyRead10 (UsbFloppyDevice, Buffer, LBA, 1);\r
523 if (EFI_ERROR (Status)) {\r
524 This->Reset (This, TRUE);\r
525 Status = EFI_DEVICE_ERROR;\r
526 goto Done;\r
527 }\r
528\r
529 LBA += 1;\r
530 NumberOfBlocks -= 1;\r
531 Buffer = (UINT8 *) Buffer + This->Media->BlockSize;\r
532\r
533 if (NumberOfBlocks == 0) {\r
534 Status = EFI_SUCCESS;\r
535 goto Done;\r
536 }\r
537\r
538 Status = USBFloppyRead10 (UsbFloppyDevice, Buffer, LBA, NumberOfBlocks);\r
539 if (EFI_ERROR (Status)) {\r
540 This->Reset (This, TRUE);\r
541 Status = EFI_DEVICE_ERROR;\r
542 }\r
543 }\r
544\r
545Done:\r
546 gBS->RestoreTPL (OldTpl);\r
547 return Status;\r
548}\r
549\r
550STATIC\r
551EFI_STATUS\r
552EFIAPI\r
553USBFloppyWriteBlocks (\r
554 IN EFI_BLOCK_IO_PROTOCOL *This,\r
555 IN UINT32 MediaId,\r
556 IN EFI_LBA LBA,\r
557 IN UINTN BufferSize,\r
558 IN VOID *Buffer\r
559 )\r
560/*++\r
561\r
562 Routine Description:\r
563 Implements EFI_BLOCK_IO_PROTOCOL.WriteBlocks() function.\r
564 \r
565 Arguments:\r
566 This The EFI_BLOCK_IO_PROTOCOL instance.\r
567 MediaId The media id that the write request is for.\r
568 LBA The starting logical block address to be written.\r
569 The caller is responsible for writing to only \r
570 legitimate locations.\r
571 BufferSize\r
572 The size of the Buffer in bytes. This must be a multiple of \r
573 the intrinsic block size of the device.\r
574 Buffer A pointer to the source buffer for the data. The caller \r
575 is responsible for either having implicit or explicit ownership\r
576 of the buffer. \r
577 \r
578 Returns: \r
579 EFI_INVALID_PARAMETER - Parameter is error\r
580 EFI_SUCCESS - Success \r
581 EFI_DEVICE_ERROR - Hardware Error\r
582 EFI_NO_MEDIA - No media\r
583 EFI_MEDIA_CHANGED - Media Change\r
584 EFI_BAD_BUFFER_SIZE - Buffer size is bad\r
585\r
586--*/ \r
587{\r
588 USB_FLOPPY_DEV *UsbFloppyDevice;\r
589 EFI_STATUS Status;\r
590 EFI_BLOCK_IO_MEDIA *Media;\r
591 UINTN BlockSize;\r
592 UINTN NumberOfBlocks;\r
593 BOOLEAN MediaChange;\r
594 EFI_TPL OldTpl;\r
595\r
596 OldTpl = gBS->RaiseTPL (EFI_TPL_NOTIFY);\r
597 Status = EFI_SUCCESS;\r
598 MediaChange = FALSE;\r
599\r
600 UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);\r
601\r
602 //\r
603 // Check parameters\r
604 //\r
605 if (!Buffer) {\r
606 Status = EFI_INVALID_PARAMETER;\r
607 goto Done;\r
608 }\r
609\r
610 if (BufferSize == 0) {\r
611 Status = EFI_SUCCESS;\r
612 goto Done;\r
613 }\r
614\r
615 UsbFloppyTestUnitReady (UsbFloppyDevice);\r
616\r
617 Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);\r
618 if (EFI_ERROR (Status)) {\r
619\r
620 Status = EFI_DEVICE_ERROR;\r
621 goto Done;\r
622 }\r
623\r
624 if (MediaChange) {\r
625 gBS->RestoreTPL (OldTpl);\r
626 gBS->ReinstallProtocolInterface (\r
627 UsbFloppyDevice->Handle,\r
628 &gEfiBlockIoProtocolGuid,\r
629 &UsbFloppyDevice->BlkIo,\r
630 &UsbFloppyDevice->BlkIo\r
631 );\r
632 gBS->RaiseTPL (EFI_TPL_NOTIFY);\r
633 }\r
634\r
635 Media = UsbFloppyDevice->BlkIo.Media;\r
636 BlockSize = Media->BlockSize;\r
637 NumberOfBlocks = BufferSize / BlockSize;\r
638\r
639 if (!(Media->MediaPresent)) {\r
640 Status = EFI_NO_MEDIA;\r
641 goto Done;\r
642 }\r
643\r
644 if (MediaId != Media->MediaId) {\r
645 Status = EFI_MEDIA_CHANGED;\r
646 goto Done;\r
647 }\r
648\r
649 if (BufferSize % BlockSize != 0) {\r
650 Status = EFI_BAD_BUFFER_SIZE;\r
651 goto Done;\r
652 }\r
653\r
654 if (LBA > Media->LastBlock) {\r
655 Status = EFI_INVALID_PARAMETER;\r
656 goto Done;\r
657 }\r
658\r
659 if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {\r
660 Status = EFI_INVALID_PARAMETER;\r
661 goto Done;\r
662 }\r
663\r
664 if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {\r
665 Status = EFI_INVALID_PARAMETER;\r
666 goto Done;\r
667 }\r
668\r
669 if (UsbFloppyDevice->BlkMedia.ReadOnly) {\r
670 Status = EFI_WRITE_PROTECTED;\r
671 goto Done;\r
672 }\r
673\r
674 if (!EFI_ERROR (Status)) {\r
675 Status = USBFloppyWrite10 (UsbFloppyDevice, Buffer, LBA, 1);\r
676 if (EFI_ERROR (Status)) {\r
677 This->Reset (This, TRUE);\r
678 Status = EFI_DEVICE_ERROR;\r
679 goto Done;\r
680 }\r
681\r
682 LBA += 1;\r
683 NumberOfBlocks -= 1;\r
684 Buffer = (UINT8 *) Buffer + This->Media->BlockSize;\r
685\r
686 if (NumberOfBlocks == 0) {\r
687 Status = EFI_SUCCESS;\r
688 goto Done;\r
689 }\r
690\r
691 Status = USBFloppyWrite10 (UsbFloppyDevice, Buffer, LBA, NumberOfBlocks);\r
692 if (EFI_ERROR (Status)) {\r
693 This->Reset (This, TRUE);\r
694 Status = EFI_DEVICE_ERROR;\r
695 }\r
696 }\r
697\r
698Done:\r
699 gBS->RestoreTPL (OldTpl);\r
700 return Status;\r
701}\r
702\r
703STATIC\r
704EFI_STATUS\r
705EFIAPI\r
706USBFloppyFlushBlocks (\r
707 IN EFI_BLOCK_IO_PROTOCOL *This\r
708 )\r
709/*++\r
710\r
711 Routine Description:\r
712 Implements EFI_BLOCK_IO_PROTOCOL.FlushBlocks() function.\r
713 (In this driver, this function just returns EFI_SUCCESS.)\r
714 \r
715 Arguments:\r
716 This The EFI_BLOCK_IO_PROTOCOL instance.\r
717 \r
718 Returns: \r
719 EFI_SUCCESS - Success\r
720--*/ \r
721{\r
722 return EFI_SUCCESS;\r
723}\r
EFI Development Kit II mirror for PVE