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11f43dfd | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation. All rights reserved. <BR> \r | |
4 | This software and associated documentation (if any) is furnished\r | |
5 | under a license and may only be used or copied in accordance\r | |
6 | with the terms of the license. Except as permitted by such\r | |
7 | license, no part of this software or documentation may be\r | |
8 | reproduced, stored in a retrieval system, or transmitted in any\r | |
9 | form or by any means without the express written consent of\r | |
10 | Intel Corporation.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | IsaFloppyBlock.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | ISA Floppy Driver\r | |
19 | 1. Support two types diskette drive \r | |
20 | 1.44M drive and 2.88M drive (and now only support 1.44M)\r | |
21 | 2. Support two diskette drives\r | |
22 | 3. Use DMA channel 2 to transfer data\r | |
23 | 4. Do not use interrupt\r | |
24 | 5. Support diskette change line signal and write protect\r | |
25 | \r | |
26 | Implement the Block IO interface\r | |
27 | \r | |
28 | Revision History:\r | |
29 | \r | |
30 | --*/\r | |
31 | \r | |
32 | #include "IsaFloppy.h"\r | |
33 | \r | |
34 | EFI_STATUS\r | |
35 | EFIAPI\r | |
36 | FdcReset (\r | |
37 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
38 | IN BOOLEAN ExtendedVerification\r | |
39 | )\r | |
40 | /*++\r | |
41 | \r | |
42 | Routine Description: Reset the Floppy Logic Drive, call the FddReset function \r | |
43 | Parameters:\r | |
44 | This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r | |
45 | ExtendedVerification BOOLEAN: Indicate that the driver may perform a more \r | |
46 | exhaustive verification operation of the device during \r | |
47 | reset, now this par is ignored in this driver \r | |
48 | Returns:\r | |
49 | EFI_SUCCESS: The Floppy Logic Drive is reset\r | |
50 | EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly \r | |
51 | and can not be reset\r | |
52 | \r | |
53 | --*/\r | |
54 | // GC_TODO: function comment is missing 'Arguments:'\r | |
55 | // GC_TODO: This - add argument and description to function comment\r | |
56 | // GC_TODO: ExtendedVerification - add argument and description to function comment\r | |
57 | {\r | |
58 | FDC_BLK_IO_DEV *FdcDev;\r | |
59 | \r | |
60 | //\r | |
61 | // Reset the Floppy Disk Controller\r | |
62 | //\r | |
63 | FdcDev = FDD_BLK_IO_FROM_THIS (This);\r | |
64 | \r | |
65 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
66 | EFI_PROGRESS_CODE,\r | |
67 | EFI_P_PC_RESET | EFI_PERIPHERAL_REMOVABLE_MEDIA,\r | |
68 | FdcDev->DevicePath\r | |
69 | );\r | |
70 | \r | |
71 | return FddReset (FdcDev);\r | |
72 | }\r | |
73 | \r | |
74 | EFI_STATUS\r | |
75 | EFIAPI\r | |
76 | FddFlushBlocks (\r | |
77 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
78 | )\r | |
79 | /*++\r | |
80 | \r | |
81 | Routine Description: \r | |
82 | Parameters:\r | |
83 | This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r | |
84 | Returns:\r | |
85 | EFI_SUCCESS: \r | |
86 | \r | |
87 | --*/\r | |
88 | // GC_TODO: function comment is missing 'Arguments:'\r | |
89 | // GC_TODO: This - add argument and description to function comment\r | |
90 | {\r | |
91 | //\r | |
92 | // Not supported yet\r | |
93 | //\r | |
94 | return EFI_SUCCESS;\r | |
95 | }\r | |
96 | \r | |
97 | STATIC\r | |
98 | VOID\r | |
99 | FddReportStatus (\r | |
100 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
101 | IN BOOLEAN Read\r | |
102 | )\r | |
103 | /*++\r | |
104 | \r | |
105 | Routine Description:\r | |
106 | \r | |
107 | GC_TODO: Add function description\r | |
108 | \r | |
109 | Arguments:\r | |
110 | \r | |
111 | This - GC_TODO: add argument description\r | |
112 | Read - GC_TODO: add argument description\r | |
113 | \r | |
114 | Returns:\r | |
115 | \r | |
116 | GC_TODO: add return values\r | |
117 | \r | |
118 | --*/\r | |
119 | {\r | |
120 | FDC_BLK_IO_DEV *FdcDev;\r | |
121 | \r | |
122 | FdcDev = FDD_BLK_IO_FROM_THIS (This);\r | |
123 | \r | |
124 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
125 | EFI_ERROR_CODE,\r | |
126 | ((Read) ? EFI_P_EC_INPUT_ERROR : EFI_P_EC_OUTPUT_ERROR) | EFI_PERIPHERAL_REMOVABLE_MEDIA,\r | |
127 | FdcDev->DevicePath\r | |
128 | );\r | |
129 | }\r | |
130 | \r | |
131 | EFI_STATUS\r | |
132 | EFIAPI\r | |
133 | FddReadBlocks (\r | |
134 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
135 | IN UINT32 MediaId,\r | |
136 | IN EFI_LBA LBA,\r | |
137 | IN UINTN BufferSize,\r | |
138 | OUT VOID *Buffer\r | |
139 | )\r | |
140 | /*++\r | |
141 | \r | |
142 | Routine Description: Read the requested number of blocks from the device \r | |
143 | Parameters:\r | |
144 | This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r | |
145 | MediaId UINT32: The media id that the read request is for \r | |
146 | LBA EFI_LBA: The starting logic block address to read from on the device\r | |
147 | BufferSize UINTN: The size of the Buffer in bytes\r | |
148 | Buffer VOID *: A pointer to the destination buffer for the data\r | |
149 | Returns:\r | |
150 | EFI_SUCCESS: The data was read correctly from the device\r | |
151 | EFI_DEVICE_ERROR:The device reported an error while attempting to perform\r | |
152 | the read operation\r | |
153 | EFI_NO_MEDIA: There is no media in the device\r | |
154 | EFI_MEDIA_CHANGED: The MediaId is not for the current media\r | |
155 | EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the \r | |
156 | intrinsic block size of the device\r | |
157 | EFI_INVALID_PARAMETER:The read request contains LBAs that are not valid, \r | |
158 | or the buffer is not on proper alignment \r | |
159 | \r | |
160 | --*/\r | |
161 | // GC_TODO: function comment is missing 'Arguments:'\r | |
162 | // GC_TODO: This - add argument and description to function comment\r | |
163 | // GC_TODO: MediaId - add argument and description to function comment\r | |
164 | // GC_TODO: LBA - add argument and description to function comment\r | |
165 | // GC_TODO: BufferSize - add argument and description to function comment\r | |
166 | // GC_TODO: Buffer - add argument and description to function comment\r | |
167 | {\r | |
168 | EFI_STATUS Status;\r | |
169 | \r | |
170 | Status = FddReadWriteBlocks (This, MediaId, LBA, BufferSize, READ, Buffer);\r | |
171 | \r | |
172 | if (EFI_ERROR (Status)) {\r | |
173 | FddReportStatus (This, TRUE);\r | |
174 | }\r | |
175 | \r | |
176 | return Status;\r | |
177 | }\r | |
178 | \r | |
179 | EFI_STATUS\r | |
180 | EFIAPI\r | |
181 | FddWriteBlocks (\r | |
182 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
183 | IN UINT32 MediaId,\r | |
184 | IN EFI_LBA LBA,\r | |
185 | IN UINTN BufferSize,\r | |
186 | IN VOID *Buffer\r | |
187 | )\r | |
188 | /*++\r | |
189 | \r | |
190 | Routine Description: Write a specified number of blocks to the device \r | |
191 | Parameters:\r | |
192 | This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r | |
193 | MediaId UINT32: The media id that the write request is for \r | |
194 | LBA EFI_LBA: The starting logic block address to be written\r | |
195 | BufferSize UINTN: The size in bytes in Buffer\r | |
196 | Buffer VOID *: A pointer to the source buffer for the data\r | |
197 | Returns :\r | |
198 | EFI_SUCCESS: The data were written correctly to the device\r | |
199 | EFI_WRITE_PROTECTED: The device can not be written to \r | |
200 | EFI_NO_MEDIA: There is no media in the device\r | |
201 | EFI_MEDIA_CHANGED: The MediaId is not for the current media\r | |
202 | EFI_DEVICE_ERROR: The device reported an error while attempting to perform \r | |
203 | the write operation \r | |
204 | EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the \r | |
205 | intrinsic block size of the device\r | |
206 | EFI_INVALID_PARAMETER:The write request contains LBAs that are not valid, \r | |
207 | or the buffer is not on proper alignment \r | |
208 | \r | |
209 | --*/\r | |
210 | // GC_TODO: function comment is missing 'Arguments:'\r | |
211 | // GC_TODO: function comment is missing 'Returns:'\r | |
212 | // GC_TODO: This - add argument and description to function comment\r | |
213 | // GC_TODO: MediaId - add argument and description to function comment\r | |
214 | // GC_TODO: LBA - add argument and description to function comment\r | |
215 | // GC_TODO: BufferSize - add argument and description to function comment\r | |
216 | // GC_TODO: Buffer - add argument and description to function comment\r | |
217 | {\r | |
218 | EFI_STATUS Status;\r | |
219 | \r | |
220 | Status = FddReadWriteBlocks (This, MediaId, LBA, BufferSize, WRITE, Buffer);\r | |
221 | \r | |
222 | if (EFI_ERROR (Status)) {\r | |
223 | FddReportStatus (This, FALSE);\r | |
224 | }\r | |
225 | \r | |
226 | return Status;\r | |
227 | }\r | |
228 | \r | |
229 | EFI_STATUS\r | |
230 | FddReadWriteBlocks (\r | |
231 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
232 | IN UINT32 MediaId,\r | |
233 | IN EFI_LBA LBA,\r | |
234 | IN UINTN BufferSize,\r | |
235 | IN BOOLEAN Operation,\r | |
236 | OUT VOID *Buffer\r | |
237 | )\r | |
238 | /*++\r | |
239 | \r | |
240 | Routine Description:\r | |
241 | \r | |
242 | GC_TODO: Add function description\r | |
243 | \r | |
244 | Arguments:\r | |
245 | \r | |
246 | This - GC_TODO: add argument description\r | |
247 | MediaId - GC_TODO: add argument description\r | |
248 | LBA - GC_TODO: add argument description\r | |
249 | BufferSize - GC_TODO: add argument description\r | |
250 | Operation - GC_TODO: add argument description\r | |
251 | Buffer - GC_TODO: add argument description\r | |
252 | \r | |
253 | Returns:\r | |
254 | \r | |
255 | EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r | |
256 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
257 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
258 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
259 | EFI_NO_MEDIA - GC_TODO: Add description for return value\r | |
260 | EFI_MEDIA_CHANGED - GC_TODO: Add description for return value\r | |
261 | EFI_WRITE_PROTECTED - GC_TODO: Add description for return value\r | |
262 | EFI_BAD_BUFFER_SIZE - GC_TODO: Add description for return value\r | |
263 | EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r | |
264 | EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r | |
265 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
266 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
267 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
268 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
269 | \r | |
270 | --*/\r | |
271 | {\r | |
272 | EFI_BLOCK_IO_MEDIA *Media;\r | |
273 | FDC_BLK_IO_DEV *FdcDev;\r | |
274 | UINTN BlockSize;\r | |
275 | UINTN NumberOfBlocks;\r | |
276 | UINTN BlockCount;\r | |
277 | EFI_STATUS Status;\r | |
278 | //\r | |
279 | // EFI_STATUS CacheStatus;\r | |
280 | //\r | |
281 | EFI_LBA LBA0;\r | |
282 | UINT8 *Pointer;\r | |
283 | \r | |
284 | //\r | |
285 | // Get the intrinsic block size\r | |
286 | //\r | |
287 | Media = This->Media;\r | |
288 | BlockSize = Media->BlockSize;\r | |
289 | FdcDev = FDD_BLK_IO_FROM_THIS (This);\r | |
290 | \r | |
291 | if (Operation == WRITE) {\r | |
292 | if (LBA == 0) {\r | |
293 | FdcFreeCache (FdcDev);\r | |
294 | }\r | |
295 | }\r | |
296 | //\r | |
297 | // Check the Parameter is valid\r | |
298 | //\r | |
299 | if (Buffer == NULL) {\r | |
300 | return EFI_INVALID_PARAMETER;\r | |
301 | }\r | |
302 | \r | |
303 | if (BufferSize == 0) {\r | |
304 | return EFI_SUCCESS;\r | |
305 | }\r | |
306 | //\r | |
307 | // Set the drive motor on\r | |
308 | //\r | |
309 | Status = MotorOn (FdcDev);\r | |
310 | if (EFI_ERROR (Status)) {\r | |
311 | return EFI_DEVICE_ERROR;\r | |
312 | }\r | |
313 | //\r | |
314 | // Check to see if media can be detected\r | |
315 | //\r | |
316 | Status = DetectMedia (FdcDev);\r | |
317 | if (EFI_ERROR (Status)) {\r | |
318 | MotorOff (FdcDev);\r | |
319 | FdcFreeCache (FdcDev);\r | |
320 | return EFI_DEVICE_ERROR;\r | |
321 | }\r | |
322 | //\r | |
323 | // Check to see if media is present\r | |
324 | //\r | |
325 | if (!(Media->MediaPresent)) {\r | |
326 | MotorOff (FdcDev);\r | |
327 | FdcFreeCache (FdcDev);\r | |
328 | \r | |
329 | /*\r | |
330 | if (FdcDev->Cache) {\r | |
331 | gBS->FreePool (FdcDev->Cache);\r | |
332 | FdcDev->Cache = NULL;\r | |
333 | }\r | |
334 | */\r | |
335 | return EFI_NO_MEDIA;\r | |
336 | }\r | |
337 | //\r | |
338 | // Check to see if media has been changed\r | |
339 | //\r | |
340 | if (MediaId != Media->MediaId) {\r | |
341 | MotorOff (FdcDev);\r | |
342 | FdcFreeCache (FdcDev);\r | |
343 | return EFI_MEDIA_CHANGED;\r | |
344 | }\r | |
345 | \r | |
346 | if (Operation == WRITE) {\r | |
347 | if (Media->ReadOnly) {\r | |
348 | MotorOff (FdcDev);\r | |
349 | return EFI_WRITE_PROTECTED;\r | |
350 | }\r | |
351 | }\r | |
352 | //\r | |
353 | // Check the parameters for this read/write operation\r | |
354 | //\r | |
355 | if (BufferSize % BlockSize != 0) {\r | |
356 | MotorOff (FdcDev);\r | |
357 | return EFI_BAD_BUFFER_SIZE;\r | |
358 | }\r | |
359 | \r | |
360 | if (LBA > Media->LastBlock) {\r | |
361 | MotorOff (FdcDev);\r | |
362 | return EFI_INVALID_PARAMETER;\r | |
363 | }\r | |
364 | \r | |
365 | if (((BufferSize / BlockSize) + LBA - 1) > Media->LastBlock) {\r | |
366 | MotorOff (FdcDev);\r | |
367 | return EFI_INVALID_PARAMETER;\r | |
368 | }\r | |
369 | \r | |
370 | if (Operation == READ) {\r | |
371 | //\r | |
372 | // See if the data that is being read is already in the cache\r | |
373 | //\r | |
374 | if (FdcDev->Cache) {\r | |
375 | if (LBA == 0 && BufferSize == BlockSize) {\r | |
376 | MotorOff (FdcDev);\r | |
377 | CopyMem ((UINT8 *) Buffer, (UINT8 *) FdcDev->Cache, BlockSize);\r | |
378 | return EFI_SUCCESS;\r | |
379 | }\r | |
380 | }\r | |
381 | }\r | |
382 | //\r | |
383 | // Set up Floppy Disk Controller\r | |
384 | //\r | |
385 | Status = Setup (FdcDev);\r | |
386 | if (EFI_ERROR (Status)) {\r | |
387 | MotorOff (FdcDev);\r | |
388 | return EFI_DEVICE_ERROR;\r | |
389 | }\r | |
390 | \r | |
391 | NumberOfBlocks = BufferSize / BlockSize;\r | |
392 | LBA0 = LBA;\r | |
393 | Pointer = Buffer;\r | |
394 | \r | |
395 | //\r | |
396 | // read blocks in the same cylinder.\r | |
397 | // in a cylinder , there are 18 * 2 = 36 blocks\r | |
398 | //\r | |
399 | BlockCount = GetTransferBlockCount (FdcDev, LBA, NumberOfBlocks);\r | |
400 | while ((BlockCount != 0) && !EFI_ERROR (Status)) {\r | |
401 | Status = ReadWriteDataSector (FdcDev, Buffer, LBA, BlockCount, Operation);\r | |
402 | if (EFI_ERROR (Status)) {\r | |
403 | MotorOff (FdcDev);\r | |
404 | FddReset (FdcDev);\r | |
405 | return EFI_DEVICE_ERROR;\r | |
406 | }\r | |
407 | \r | |
408 | LBA += BlockCount;\r | |
409 | NumberOfBlocks -= BlockCount;\r | |
410 | Buffer = (VOID *) ((UINTN) Buffer + BlockCount * BlockSize);\r | |
411 | BlockCount = GetTransferBlockCount (FdcDev, LBA, NumberOfBlocks);\r | |
412 | }\r | |
413 | \r | |
414 | Buffer = Pointer;\r | |
415 | \r | |
416 | //\r | |
417 | // Turn the motor off\r | |
418 | //\r | |
419 | MotorOff (FdcDev);\r | |
420 | \r | |
421 | if (Operation == READ) {\r | |
422 | //\r | |
423 | // Cache the data read\r | |
424 | //\r | |
425 | if (LBA0 == 0 && !FdcDev->Cache) {\r | |
426 | FdcDev->Cache = AllocateCopyPool (BlockSize, Buffer);\r | |
427 | }\r | |
428 | }\r | |
429 | \r | |
430 | return EFI_SUCCESS;\r | |
431 | \r | |
432 | }\r | |
433 | \r | |
434 | VOID\r | |
435 | FdcFreeCache (\r | |
436 | IN FDC_BLK_IO_DEV *FdcDev\r | |
437 | )\r | |
438 | /*++\r | |
439 | \r | |
440 | Routine Description:\r | |
441 | \r | |
442 | GC_TODO: Add function description\r | |
443 | \r | |
444 | Arguments:\r | |
445 | \r | |
446 | FdcDev - GC_TODO: add argument description\r | |
447 | \r | |
448 | Returns:\r | |
449 | \r | |
450 | GC_TODO: add return values\r | |
451 | \r | |
452 | --*/\r | |
453 | {\r | |
454 | if (FdcDev->Cache) {\r | |
455 | gBS->FreePool (FdcDev->Cache);\r | |
456 | FdcDev->Cache = NULL;\r | |
457 | }\r | |
458 | }\r |