]>
Commit | Line | Data |
---|---|---|
f8cd287b | 1 | /**@file\r |
11f43dfd | 2 | ISA Floppy Driver\r |
ae5852b2 | 3 | 1. Support two types diskette drive\r |
11f43dfd | 4 | 1.44M drive and 2.88M drive (and now only support 1.44M)\r |
5 | 2. Support two diskette drives\r | |
6 | 3. Use DMA channel 2 to transfer data\r | |
7 | 4. Do not use interrupt\r | |
8 | 5. Support diskette change line signal and write protect\r | |
ae5852b2 | 9 | \r |
11f43dfd | 10 | The internal function for the floppy driver\r |
f8cd287b | 11 | \r |
12 | Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r | |
13 | All rights reserved. This program and the accompanying materials\r | |
14 | are licensed and made available under the terms and conditions of the BSD License\r | |
15 | which accompanies this distribution. The full text of the license may be found at\r | |
16 | http://opensource.org/licenses/bsd-license.php\r | |
11f43dfd | 17 | \r |
f8cd287b | 18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11f43dfd | 20 | \r |
f8cd287b | 21 | **/\r |
11f43dfd | 22 | \r |
23 | #include "IsaFloppy.h"\r | |
24 | \r | |
25 | EFI_STATUS\r | |
26 | DiscoverFddDevice (\r | |
27 | IN FDC_BLK_IO_DEV *FdcDev\r | |
28 | )\r | |
29 | /*++\r | |
30 | \r | |
ae5852b2 | 31 | Routine Description: Detect the floppy drive is presented or not\r |
11f43dfd | 32 | Parameters:\r |
ae5852b2 | 33 | FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 34 | Returns:\r |
ae5852b2 | 35 | EFI_SUCCESS Drive is presented\r |
11f43dfd | 36 | EFI_NOT_FOUND Drive is not presented\r |
37 | \r | |
38 | --*/\r | |
39 | // GC_TODO: function comment is missing 'Arguments:'\r | |
40 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
41 | {\r | |
42 | EFI_STATUS Status;\r | |
43 | \r | |
44 | FdcDev->BlkIo.Media = &FdcDev->BlkMedia;\r | |
45 | \r | |
46 | //\r | |
47 | // Call FddIndentify subroutine\r | |
48 | //\r | |
49 | Status = FddIdentify (FdcDev);\r | |
50 | if (EFI_ERROR (Status)) {\r | |
51 | return EFI_NOT_FOUND;\r | |
52 | }\r | |
53 | \r | |
54 | FdcDev->BlkIo.Reset = FdcReset;\r | |
55 | FdcDev->BlkIo.FlushBlocks = FddFlushBlocks;\r | |
56 | FdcDev->BlkIo.ReadBlocks = FddReadBlocks;\r | |
57 | FdcDev->BlkIo.WriteBlocks = FddWriteBlocks;\r | |
58 | FdcDev->BlkMedia.LogicalPartition = FALSE;\r | |
59 | FdcDev->BlkMedia.WriteCaching = FALSE;\r | |
60 | \r | |
61 | return EFI_SUCCESS;\r | |
62 | }\r | |
63 | \r | |
64 | EFI_STATUS\r | |
65 | FddIdentify (\r | |
66 | IN FDC_BLK_IO_DEV *FdcDev\r | |
67 | )\r | |
68 | /*++\r | |
69 | \r | |
70 | Routine Description: Do recalibrate and see the drive is presented or not\r | |
71 | Set the media parameters\r | |
72 | Parameters:\r | |
ae5852b2 | 73 | FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 74 | Returns:\r |
ae5852b2 | 75 | EFI_SUCCESS:\r |
76 | EFI_DEVICE_ERROR:\r | |
11f43dfd | 77 | \r |
78 | --*/\r | |
79 | // GC_TODO: function comment is missing 'Arguments:'\r | |
80 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
81 | {\r | |
82 | EFI_STATUS Status;\r | |
83 | \r | |
84 | //\r | |
85 | // Set Floppy Disk Controller's motor on\r | |
86 | //\r | |
87 | Status = MotorOn (FdcDev);\r | |
88 | if (EFI_ERROR (Status)) {\r | |
89 | return EFI_DEVICE_ERROR;\r | |
90 | }\r | |
91 | \r | |
92 | Status = Recalibrate (FdcDev);\r | |
93 | \r | |
94 | if (EFI_ERROR (Status)) {\r | |
95 | MotorOff (FdcDev);\r | |
96 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
97 | return EFI_DEVICE_ERROR;\r | |
98 | }\r | |
99 | //\r | |
100 | // Set Media Parameter\r | |
101 | //\r | |
102 | FdcDev->BlkIo.Media->RemovableMedia = TRUE;\r | |
103 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
104 | //\r | |
105 | // investigate\r | |
106 | //\r | |
107 | FdcDev->BlkIo.Media->MediaId = 0;\r | |
108 | \r | |
109 | //\r | |
110 | // Check Media\r | |
111 | //\r | |
112 | Status = DisketChanged (FdcDev);\r | |
11f43dfd | 113 | \r |
ae5852b2 | 114 | if (Status == EFI_NO_MEDIA) {\r |
115 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r | |
179a2e97 | 116 | } else if ((Status != EFI_MEDIA_CHANGED) &&\r |
117 | (Status != EFI_SUCCESS)) {\r | |
11f43dfd | 118 | MotorOff (FdcDev);\r |
119 | return Status;\r | |
120 | }\r | |
ae5852b2 | 121 | \r |
11f43dfd | 122 | //\r |
123 | // Check Disk Write Protected\r | |
124 | //\r | |
125 | Status = SenseDrvStatus (FdcDev, 0);\r | |
11f43dfd | 126 | \r |
ae5852b2 | 127 | if (Status == EFI_WRITE_PROTECTED) {\r |
128 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
129 | } else if (Status == EFI_SUCCESS) {\r | |
11f43dfd | 130 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r |
ae5852b2 | 131 | } else {\r |
11f43dfd | 132 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 133 | }\r |
134 | \r | |
135 | MotorOff (FdcDev);\r | |
136 | \r | |
137 | //\r | |
138 | // Set Media Default Type\r | |
139 | //\r | |
140 | FdcDev->BlkIo.Media->BlockSize = DISK_1440K_BYTEPERSECTOR;\r | |
141 | FdcDev->BlkIo.Media->LastBlock = DISK_1440K_EOT * 2 * (DISK_1440K_MAXTRACKNUM + 1) - 1;\r | |
142 | \r | |
143 | return EFI_SUCCESS;\r | |
144 | }\r | |
145 | \r | |
146 | EFI_STATUS\r | |
147 | FddReset (\r | |
148 | IN FDC_BLK_IO_DEV *FdcDev\r | |
149 | )\r | |
150 | /*++\r | |
151 | \r | |
ae5852b2 | 152 | Routine Description: Reset the Floppy Logic Drive\r |
11f43dfd | 153 | Parameters:\r |
ae5852b2 | 154 | FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 155 | Returns:\r |
156 | EFI_SUCCESS: The Floppy Logic Drive is reset\r | |
ae5852b2 | 157 | EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly and\r |
11f43dfd | 158 | can not be reset\r |
159 | \r | |
160 | --*/\r | |
161 | // GC_TODO: function comment is missing 'Arguments:'\r | |
162 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
163 | {\r | |
164 | UINT8 data;\r | |
165 | UINT8 StatusRegister0;\r | |
166 | UINT8 PresentCylinderNumber;\r | |
167 | UINTN Index;\r | |
168 | \r | |
169 | //\r | |
170 | // Report reset progress code\r | |
171 | //\r | |
172 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
173 | EFI_PROGRESS_CODE,\r | |
174 | EFI_PERIPHERAL_REMOVABLE_MEDIA | EFI_P_PC_RESET,\r | |
175 | FdcDev->DevicePath\r | |
176 | );\r | |
177 | \r | |
178 | //\r | |
179 | // Reset specified Floppy Logic Drive according to FdcDev -> Disk\r | |
180 | // Set Digital Output Register(DOR) to do reset work\r | |
181 | // bit0 & bit1 of DOR : Drive Select\r | |
182 | // bit2 : Reset bit\r | |
183 | // bit3 : DMA and Int bit\r | |
184 | // Reset : a "0" written to bit2 resets the FDC, this reset will remain\r | |
185 | // active until\r | |
186 | // a "1" is written to this bit.\r | |
187 | // Reset step 1:\r | |
188 | // use bit0 & bit1 to select the logic drive\r | |
189 | // write "0" to bit2\r | |
190 | //\r | |
191 | data = 0x0;\r | |
192 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
193 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
194 | \r | |
195 | //\r | |
196 | // wait some time,at least 120us\r | |
197 | //\r | |
198 | MicroSecondDelay (500);\r | |
199 | \r | |
200 | //\r | |
201 | // Reset step 2:\r | |
202 | // write "1" to bit2\r | |
203 | // write "1" to bit3 : enable DMA\r | |
204 | //\r | |
205 | data |= 0x0C;\r | |
206 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
207 | \r | |
208 | //\r | |
209 | // Experience value\r | |
210 | //\r | |
211 | MicroSecondDelay (2000);\r | |
212 | \r | |
213 | //\r | |
214 | // wait specified floppy logic drive is not busy\r | |
215 | //\r | |
216 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
217 | return EFI_DEVICE_ERROR;\r | |
218 | }\r | |
219 | //\r | |
220 | // Set the Transfer Data Rate\r | |
221 | //\r | |
222 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
223 | \r | |
224 | //\r | |
225 | // Experience value\r | |
226 | //\r | |
227 | MicroSecondDelay (100);\r | |
228 | \r | |
229 | //\r | |
230 | // Issue Sense interrupt command for each drive (total 4 drives)\r | |
231 | //\r | |
232 | for (Index = 0; Index < 4; Index++) {\r | |
233 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
234 | return EFI_DEVICE_ERROR;\r | |
235 | }\r | |
236 | }\r | |
237 | //\r | |
238 | // issue Specify command\r | |
239 | //\r | |
240 | if (EFI_ERROR (Specify (FdcDev))) {\r | |
241 | return EFI_DEVICE_ERROR;\r | |
242 | }\r | |
243 | \r | |
244 | return EFI_SUCCESS;\r | |
245 | }\r | |
246 | \r | |
247 | EFI_STATUS\r | |
248 | MotorOn (\r | |
249 | IN FDC_BLK_IO_DEV *FdcDev\r | |
250 | )\r | |
251 | /*++\r | |
252 | \r | |
253 | Routine Description: Turn the drive's motor on\r | |
ae5852b2 | 254 | The drive's motor must be on before any command can be executed\r |
11f43dfd | 255 | Parameters:\r |
ae5852b2 | 256 | FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 257 | Returns:\r |
258 | EFI_SUCCESS: Turn the drive's motor on successfully\r | |
ae5852b2 | 259 | EFI_DEVICE_ERROR: The drive is busy, so can not turn motor on\r |
260 | EFI_INVALID_PARAMETER: Fail to Set timer(Cancel timer)\r | |
11f43dfd | 261 | \r |
262 | --*/\r | |
263 | // GC_TODO: function comment is missing 'Arguments:'\r | |
264 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
265 | {\r | |
266 | EFI_STATUS Status;\r | |
267 | UINT8 data;\r | |
268 | \r | |
269 | //\r | |
270 | // Control of the floppy drive motors is a big pain. If motor is off, you have\r | |
271 | // to turn it on first. But you can not leave the motor on all the time, since\r | |
272 | // that would wear out the disk. On the other hand, if you turn the motor off\r | |
273 | // after each operation, the system performance will be awful. The compromise\r | |
274 | // used in this driver is to leave the motor on for 2 seconds after\r | |
275 | // each operation. If a new operation is started in that interval(2s),\r | |
276 | // the motor need not be turned on again. If no new operation is started,\r | |
277 | // a timer goes off and the motor is turned off\r | |
278 | //\r | |
279 | //\r | |
280 | // Cancel the timer\r | |
281 | //\r | |
282 | Status = gBS->SetTimer (FdcDev->Event, TimerCancel, 0);\r | |
283 | \r | |
284 | if (EFI_ERROR (Status)) {\r | |
285 | return EFI_INVALID_PARAMETER;\r | |
286 | }\r | |
287 | //\r | |
288 | // Get the motor status\r | |
289 | //\r | |
290 | data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r | |
291 | \r | |
292 | if (((FdcDev->Disk == FDC_DISK0) && ((data & 0x10) == 0x10)) ||\r | |
293 | ((FdcDev->Disk == FDC_DISK1) && ((data & 0x21) == 0x21))\r | |
294 | ) {\r | |
295 | return EFI_SUCCESS;\r | |
296 | }\r | |
297 | //\r | |
298 | // The drive's motor is off, so need turn it on\r | |
299 | // first look at command and drive are busy or not\r | |
300 | //\r | |
301 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
302 | return EFI_DEVICE_ERROR;\r | |
303 | }\r | |
304 | //\r | |
305 | // for drive A: 1CH, drive B: 2DH\r | |
306 | //\r | |
307 | data = 0x0C;\r | |
308 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
309 | if (FdcDev->Disk == FDC_DISK0) {\r | |
310 | //\r | |
311 | // drive A\r | |
312 | //\r | |
313 | data |= DRVA_MOTOR_ON;\r | |
314 | } else {\r | |
315 | //\r | |
316 | // drive B\r | |
317 | //\r | |
318 | data |= DRVB_MOTOR_ON;\r | |
319 | }\r | |
320 | \r | |
321 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
322 | \r | |
323 | //\r | |
324 | // Experience value\r | |
325 | //\r | |
326 | MicroSecondDelay (4000);\r | |
327 | \r | |
328 | return EFI_SUCCESS;\r | |
329 | }\r | |
330 | \r | |
331 | EFI_STATUS\r | |
332 | MotorOff (\r | |
333 | IN FDC_BLK_IO_DEV *FdcDev\r | |
334 | )\r | |
335 | /*++\r | |
336 | \r | |
337 | Routine Description: Set a Timer and when Timer goes off, turn the motor off\r | |
338 | Parameters:\r | |
ae5852b2 | 339 | FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 340 | Returns:\r |
341 | EFI_SUCCESS: Set the Timer successfully\r | |
ae5852b2 | 342 | EFI_INVALID_PARAMETER: Fail to Set the timer\r |
11f43dfd | 343 | \r |
344 | --*/\r | |
345 | // GC_TODO: function comment is missing 'Arguments:'\r | |
346 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
347 | {\r | |
348 | //\r | |
349 | // Set the timer : 2s\r | |
350 | //\r | |
351 | return gBS->SetTimer (FdcDev->Event, TimerRelative, 20000000);\r | |
352 | }\r | |
353 | \r | |
354 | EFI_STATUS\r | |
355 | DisketChanged (\r | |
356 | IN FDC_BLK_IO_DEV *FdcDev\r | |
357 | )\r | |
358 | /*++\r | |
359 | \r | |
360 | Routine Description: Detect the disk in the drive is changed or not\r | |
361 | Parameters:\r | |
ae5852b2 | 362 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 363 | Returns:\r |
364 | EFI_SUCCESS: No disk media change\r | |
365 | EFI_DEVICE_ERROR: Fail to do the recalibrate or seek operation\r | |
366 | EFI_NO_MEDIA: No disk in the drive\r | |
367 | EFI_MEDIA_CHANGED: There is a new disk in the drive\r | |
368 | \r | |
369 | --*/\r | |
370 | // GC_TODO: function comment is missing 'Arguments:'\r | |
371 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
372 | {\r | |
373 | EFI_STATUS Status;\r | |
374 | UINT8 data;\r | |
375 | \r | |
376 | //\r | |
377 | // Check change line\r | |
378 | //\r | |
379 | data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r | |
380 | \r | |
381 | //\r | |
382 | // Io delay\r | |
383 | //\r | |
384 | MicroSecondDelay (50);\r | |
385 | \r | |
386 | if ((data & DIR_DCL) == 0x80) {\r | |
387 | //\r | |
388 | // disk change line is active\r | |
389 | //\r | |
390 | if (FdcDev->PresentCylinderNumber != 0) {\r | |
391 | Status = Recalibrate (FdcDev);\r | |
392 | } else {\r | |
393 | Status = Seek (FdcDev, 0x30);\r | |
394 | }\r | |
395 | \r | |
396 | if (EFI_ERROR (Status)) {\r | |
397 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
398 | return EFI_DEVICE_ERROR;\r | |
399 | //\r | |
400 | // Fail to do the seek or recalibrate operation\r | |
401 | //\r | |
402 | }\r | |
403 | \r | |
404 | data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r | |
405 | \r | |
406 | //\r | |
407 | // Io delay\r | |
408 | //\r | |
409 | MicroSecondDelay (50);\r | |
410 | \r | |
411 | if ((data & DIR_DCL) == 0x80) {\r | |
412 | return EFI_NO_MEDIA;\r | |
413 | }\r | |
414 | \r | |
415 | return EFI_MEDIA_CHANGED;\r | |
416 | }\r | |
417 | \r | |
418 | return EFI_SUCCESS;\r | |
419 | }\r | |
420 | \r | |
421 | EFI_STATUS\r | |
422 | Specify (\r | |
423 | IN FDC_BLK_IO_DEV *FdcDev\r | |
424 | )\r | |
425 | /*++\r | |
426 | \r | |
427 | Routine Description: Do the Specify command, this command sets DMA operation\r | |
ae5852b2 | 428 | and the initial values for each of the three internal\r |
11f43dfd | 429 | times: HUT, SRT and HLT\r |
430 | Parameters:\r | |
431 | None\r | |
432 | Returns:\r | |
433 | EFI_SUCCESS: Execute the Specify command successfully\r | |
434 | EFI_DEVICE_ERROR: Fail to execute the command\r | |
435 | \r | |
436 | --*/\r | |
437 | // GC_TODO: function comment is missing 'Arguments:'\r | |
438 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
439 | {\r | |
440 | FDD_SPECIFY_CMD Command;\r | |
441 | UINTN Index;\r | |
442 | UINT8 *CommandPointer;\r | |
443 | \r | |
444 | ZeroMem (&Command, sizeof (FDD_SPECIFY_CMD));\r | |
445 | Command.CommandCode = SPECIFY_CMD;\r | |
446 | //\r | |
447 | // set SRT, HUT\r | |
448 | //\r | |
449 | Command.SrtHut = 0xdf;\r | |
450 | //\r | |
451 | // 0xdf;\r | |
452 | //\r | |
453 | // set HLT and DMA\r | |
454 | //\r | |
455 | Command.HltNd = 0x02;\r | |
456 | \r | |
457 | CommandPointer = (UINT8 *) (&Command);\r | |
458 | for (Index = 0; Index < sizeof (FDD_SPECIFY_CMD); Index++) {\r | |
459 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
460 | return EFI_DEVICE_ERROR;\r | |
461 | }\r | |
462 | }\r | |
463 | \r | |
464 | return EFI_SUCCESS;\r | |
465 | }\r | |
466 | \r | |
467 | EFI_STATUS\r | |
468 | Recalibrate (\r | |
469 | IN FDC_BLK_IO_DEV *FdcDev\r | |
470 | )\r | |
471 | /*++\r | |
472 | \r | |
473 | Routine Description: Set the head of floppy drive to track 0\r | |
474 | Parameters:\r | |
475 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
476 | Returns:\r | |
477 | EFI_SUCCESS: Execute the Recalibrate operation successfully\r | |
478 | EFI_DEVICE_ERROR: Fail to execute the Recalibrate operation\r | |
479 | \r | |
480 | --*/\r | |
481 | // GC_TODO: function comment is missing 'Arguments:'\r | |
482 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
483 | {\r | |
484 | FDD_COMMAND_PACKET2 Command;\r | |
485 | UINTN Index;\r | |
486 | UINT8 StatusRegister0;\r | |
487 | UINT8 PresentCylinderNumber;\r | |
488 | UINT8 *CommandPointer;\r | |
489 | UINT8 Count;\r | |
490 | \r | |
491 | Count = 2;\r | |
492 | \r | |
493 | while (Count > 0) {\r | |
494 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
495 | Command.CommandCode = RECALIBRATE_CMD;\r | |
496 | //\r | |
497 | // drive select\r | |
498 | //\r | |
499 | if (FdcDev->Disk == FDC_DISK0) {\r | |
500 | Command.DiskHeadSel = 0;\r | |
501 | //\r | |
502 | // 0\r | |
503 | //\r | |
504 | } else {\r | |
505 | Command.DiskHeadSel = 1;\r | |
506 | //\r | |
507 | // 1\r | |
508 | //\r | |
509 | }\r | |
510 | \r | |
511 | CommandPointer = (UINT8 *) (&Command);\r | |
512 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
513 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
514 | return EFI_DEVICE_ERROR;\r | |
515 | }\r | |
516 | }\r | |
517 | //\r | |
518 | // Experience value\r | |
519 | //\r | |
520 | MicroSecondDelay (250000);\r | |
521 | //\r | |
522 | // need modify according to 1.44M or 2.88M\r | |
523 | //\r | |
524 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
525 | return EFI_DEVICE_ERROR;\r | |
526 | }\r | |
527 | \r | |
528 | if ((StatusRegister0 & 0xf0) == 0x20 && PresentCylinderNumber == 0) {\r | |
529 | FdcDev->PresentCylinderNumber = 0;\r | |
530 | FdcDev->ControllerState->NeedRecalibrate = FALSE;\r | |
531 | return EFI_SUCCESS;\r | |
532 | } else {\r | |
533 | Count--;\r | |
534 | if (Count == 0) {\r | |
535 | return EFI_DEVICE_ERROR;\r | |
536 | }\r | |
537 | }\r | |
538 | }\r | |
539 | //\r | |
540 | // end while\r | |
541 | //\r | |
542 | return EFI_SUCCESS;\r | |
543 | }\r | |
544 | \r | |
545 | EFI_STATUS\r | |
546 | Seek (\r | |
547 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
548 | IN EFI_LBA Lba\r | |
549 | )\r | |
550 | /*++\r | |
551 | \r | |
552 | Routine Description: Set the head of floppy drive to the new cylinder\r | |
553 | Parameters:\r | |
554 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
555 | Lba EFI_LBA : The logic block address want to seek\r | |
556 | Returns:\r | |
557 | EFI_SUCCESS: Execute the Seek operation successfully\r | |
558 | EFI_DEVICE_ERROR: Fail to execute the Seek operation\r | |
559 | \r | |
560 | --*/\r | |
561 | // GC_TODO: function comment is missing 'Arguments:'\r | |
562 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
563 | // GC_TODO: Lba - add argument and description to function comment\r | |
564 | {\r | |
565 | FDD_SEEK_CMD Command;\r | |
566 | UINT8 EndOfTrack;\r | |
567 | UINT8 Head;\r | |
568 | UINT8 Cylinder;\r | |
569 | UINT8 StatusRegister0;\r | |
570 | UINT8 *CommandPointer;\r | |
571 | UINT8 PresentCylinderNumber;\r | |
572 | UINTN Index;\r | |
573 | UINT8 DelayTime;\r | |
574 | \r | |
575 | if (FdcDev->ControllerState->NeedRecalibrate) {\r | |
576 | if (EFI_ERROR (Recalibrate (FdcDev))) {\r | |
577 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
578 | return EFI_DEVICE_ERROR;\r | |
579 | }\r | |
580 | }\r | |
581 | \r | |
582 | EndOfTrack = DISK_1440K_EOT;\r | |
583 | //\r | |
584 | // Calculate cylinder based on Lba and EOT\r | |
585 | //\r | |
586 | Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
587 | \r | |
588 | //\r | |
589 | // if the destination cylinder is the present cylinder, unnecessary to do the\r | |
590 | // seek operation\r | |
591 | //\r | |
592 | if (FdcDev->PresentCylinderNumber == Cylinder) {\r | |
593 | return EFI_SUCCESS;\r | |
594 | }\r | |
595 | //\r | |
596 | // Calculate the head : 0 or 1\r | |
597 | //\r | |
598 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
599 | \r | |
600 | ZeroMem (&Command, sizeof (FDD_SEEK_CMD));\r | |
601 | Command.CommandCode = SEEK_CMD;\r | |
602 | if (FdcDev->Disk == FDC_DISK0) {\r | |
603 | Command.DiskHeadSel = 0;\r | |
604 | //\r | |
605 | // 0\r | |
606 | //\r | |
607 | } else {\r | |
608 | Command.DiskHeadSel = 1;\r | |
609 | //\r | |
610 | // 1\r | |
611 | //\r | |
612 | }\r | |
613 | \r | |
614 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
615 | Command.NewCylinder = Cylinder;\r | |
616 | \r | |
617 | CommandPointer = (UINT8 *) (&Command);\r | |
618 | for (Index = 0; Index < sizeof (FDD_SEEK_CMD); Index++) {\r | |
619 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
620 | return EFI_DEVICE_ERROR;\r | |
621 | }\r | |
622 | }\r | |
623 | //\r | |
624 | // Io delay\r | |
625 | //\r | |
626 | MicroSecondDelay (100);\r | |
627 | \r | |
628 | //\r | |
629 | // Calculate waiting time\r | |
630 | //\r | |
631 | if (FdcDev->PresentCylinderNumber > Cylinder) {\r | |
632 | DelayTime = (UINT8) (FdcDev->PresentCylinderNumber - Cylinder);\r | |
633 | } else {\r | |
634 | DelayTime = (UINT8) (Cylinder - FdcDev->PresentCylinderNumber);\r | |
635 | }\r | |
636 | \r | |
637 | MicroSecondDelay ((DelayTime + 1) * 4000);\r | |
638 | \r | |
639 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
640 | return EFI_DEVICE_ERROR;\r | |
641 | }\r | |
642 | \r | |
643 | if ((StatusRegister0 & 0xf0) == 0x20) {\r | |
644 | FdcDev->PresentCylinderNumber = Command.NewCylinder;\r | |
645 | return EFI_SUCCESS;\r | |
646 | } else {\r | |
647 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
648 | return EFI_DEVICE_ERROR;\r | |
649 | }\r | |
650 | }\r | |
651 | \r | |
652 | EFI_STATUS\r | |
653 | SenseIntStatus (\r | |
654 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
655 | IN OUT UINT8 *StatusRegister0,\r | |
656 | IN OUT UINT8 *PresentCylinderNumber\r | |
657 | )\r | |
658 | /*++\r | |
659 | \r | |
ae5852b2 | 660 | Routine Description: Do the Sense Interrupt Status command, this command\r |
11f43dfd | 661 | resets the interrupt signal\r |
662 | Parameters:\r | |
ae5852b2 | 663 | StatusRegister0 UINT8 *: Be used to save Status Register 0 read from FDC\r |
664 | PresentCylinderNumber UINT8 *: Be used to save present cylinder number\r | |
11f43dfd | 665 | read from FDC\r |
666 | Returns:\r | |
667 | EFI_SUCCESS: Execute the Sense Interrupt Status command successfully\r | |
668 | EFI_DEVICE_ERROR: Fail to execute the command\r | |
669 | \r | |
670 | --*/\r | |
671 | // GC_TODO: function comment is missing 'Arguments:'\r | |
672 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
673 | // GC_TODO: StatusRegister0 - add argument and description to function comment\r | |
674 | // GC_TODO: PresentCylinderNumber - add argument and description to function comment\r | |
675 | {\r | |
676 | UINT8 command;\r | |
677 | \r | |
678 | command = SENSE_INT_STATUS_CMD;\r | |
679 | if (EFI_ERROR (DataOutByte (FdcDev, &command))) {\r | |
680 | return EFI_DEVICE_ERROR;\r | |
681 | }\r | |
682 | \r | |
683 | if (EFI_ERROR (DataInByte (FdcDev, StatusRegister0))) {\r | |
684 | return EFI_DEVICE_ERROR;\r | |
685 | }\r | |
686 | \r | |
687 | if (EFI_ERROR (DataInByte (FdcDev, PresentCylinderNumber))) {\r | |
688 | return EFI_DEVICE_ERROR;\r | |
689 | }\r | |
690 | \r | |
691 | return EFI_SUCCESS;\r | |
692 | }\r | |
693 | \r | |
694 | EFI_STATUS\r | |
695 | SenseDrvStatus (\r | |
696 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
697 | IN EFI_LBA Lba\r | |
698 | )\r | |
699 | /*++\r | |
700 | \r | |
701 | Routine Description: Do the Sense Drive Status command\r | |
702 | Parameters:\r | |
ae5852b2 | 703 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 704 | Lba EFI_LBA : Logic block address\r |
705 | Returns:\r | |
706 | EFI_SUCCESS: Execute the Sense Drive Status command successfully\r | |
707 | EFI_DEVICE_ERROR: Fail to execute the command\r | |
ae5852b2 | 708 | EFI_WRITE_PROTECTED:The disk is write protected\r |
11f43dfd | 709 | \r |
710 | --*/\r | |
711 | // GC_TODO: function comment is missing 'Arguments:'\r | |
712 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
713 | // GC_TODO: Lba - add argument and description to function comment\r | |
714 | {\r | |
715 | FDD_COMMAND_PACKET2 Command;\r | |
716 | UINT8 Head;\r | |
717 | UINT8 EndOfTrack;\r | |
718 | UINTN Index;\r | |
719 | UINT8 StatusRegister3;\r | |
720 | UINT8 *CommandPointer;\r | |
721 | \r | |
722 | //\r | |
723 | // Sense Drive Status command obtains drive status information,\r | |
724 | // it has not execution phase and goes directly to the result phase from the\r | |
725 | // command phase, Status Register 3 contains the drive status information\r | |
726 | //\r | |
727 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
728 | Command.CommandCode = SENSE_DRV_STATUS_CMD;\r | |
729 | \r | |
730 | if (FdcDev->Disk == FDC_DISK0) {\r | |
731 | Command.DiskHeadSel = 0;\r | |
732 | } else {\r | |
733 | Command.DiskHeadSel = 1;\r | |
734 | }\r | |
735 | \r | |
736 | EndOfTrack = DISK_1440K_EOT;\r | |
737 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
738 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
739 | \r | |
740 | CommandPointer = (UINT8 *) (&Command);\r | |
741 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
742 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
743 | return EFI_DEVICE_ERROR;\r | |
744 | }\r | |
745 | }\r | |
746 | \r | |
747 | if (EFI_ERROR (DataInByte (FdcDev, &StatusRegister3))) {\r | |
748 | return EFI_DEVICE_ERROR;\r | |
749 | }\r | |
750 | //\r | |
751 | // Io delay\r | |
752 | //\r | |
753 | MicroSecondDelay (50);\r | |
754 | \r | |
755 | //\r | |
756 | // Check Status Register 3 to get drive status information\r | |
757 | //\r | |
758 | return CheckStatus3 (StatusRegister3);\r | |
759 | }\r | |
760 | \r | |
761 | EFI_STATUS\r | |
762 | DetectMedia (\r | |
763 | IN FDC_BLK_IO_DEV *FdcDev\r | |
764 | )\r | |
765 | /*++\r | |
766 | \r | |
ae5852b2 | 767 | Routine Description: Update the disk media properties and if necessary\r |
11f43dfd | 768 | reinstall Block I/O interface\r |
769 | Parameters:\r | |
ae5852b2 | 770 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r |
11f43dfd | 771 | Returns:\r |
772 | EFI_SUCCESS: Do the operation successfully\r | |
773 | EFI_DEVICE_ERROR: Fail to the operation\r | |
774 | \r | |
775 | --*/\r | |
776 | // GC_TODO: function comment is missing 'Arguments:'\r | |
777 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
778 | {\r | |
779 | EFI_STATUS Status;\r | |
780 | BOOLEAN bReset;\r | |
781 | BOOLEAN bReadOnlyLastTime;\r | |
782 | BOOLEAN bMediaPresentLastTime;\r | |
783 | \r | |
784 | bReset = FALSE;\r | |
785 | bReadOnlyLastTime = FdcDev->BlkIo.Media->ReadOnly;\r | |
786 | bMediaPresentLastTime = FdcDev->BlkIo.Media->MediaPresent;\r | |
787 | \r | |
788 | //\r | |
789 | // Check disk change\r | |
790 | //\r | |
791 | Status = DisketChanged (FdcDev);\r | |
ae5852b2 | 792 | \r |
793 | if (Status == EFI_MEDIA_CHANGED) {\r | |
11f43dfd | 794 | FdcDev->BlkIo.Media->MediaId++;\r |
795 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
796 | bReset = TRUE;\r | |
ae5852b2 | 797 | } else if (Status == EFI_NO_MEDIA) {\r |
11f43dfd | 798 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r |
ae5852b2 | 799 | } else if (Status != EFI_SUCCESS) {\r |
11f43dfd | 800 | MotorOff (FdcDev);\r |
801 | return Status;\r | |
802 | //\r | |
803 | // EFI_DEVICE_ERROR\r | |
804 | //\r | |
805 | }\r | |
806 | \r | |
807 | if (FdcDev->BlkIo.Media->MediaPresent) {\r | |
808 | //\r | |
809 | // Check disk write protected\r | |
810 | //\r | |
811 | Status = SenseDrvStatus (FdcDev, 0);\r | |
812 | if (Status == EFI_WRITE_PROTECTED) {\r | |
813 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
814 | } else {\r | |
815 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r | |
816 | }\r | |
817 | }\r | |
818 | \r | |
819 | if (FdcDev->BlkIo.Media->MediaPresent && (bReadOnlyLastTime != FdcDev->BlkIo.Media->ReadOnly)) {\r | |
820 | bReset = TRUE;\r | |
821 | }\r | |
822 | \r | |
823 | if (bMediaPresentLastTime != FdcDev->BlkIo.Media->MediaPresent) {\r | |
824 | bReset = TRUE;\r | |
825 | }\r | |
826 | \r | |
827 | if (bReset) {\r | |
828 | Status = gBS->ReinstallProtocolInterface (\r | |
829 | FdcDev->Handle,\r | |
830 | &gEfiBlockIoProtocolGuid,\r | |
831 | &FdcDev->BlkIo,\r | |
832 | &FdcDev->BlkIo\r | |
833 | );\r | |
834 | \r | |
835 | if (EFI_ERROR (Status)) {\r | |
836 | return Status;\r | |
837 | }\r | |
838 | }\r | |
839 | \r | |
840 | return EFI_SUCCESS;\r | |
841 | }\r | |
842 | \r | |
843 | EFI_STATUS\r | |
844 | Setup (\r | |
845 | IN FDC_BLK_IO_DEV *FdcDev\r | |
846 | )\r | |
847 | /*++\r | |
848 | \r | |
849 | Routine Description: Set the data rate and so on\r | |
850 | Parameters:\r | |
ae5852b2 | 851 | None\r |
11f43dfd | 852 | Returns:\r |
ae5852b2 | 853 | EFI_SUCCESS:\r |
11f43dfd | 854 | \r |
855 | --*/\r | |
856 | // GC_TODO: function comment is missing 'Arguments:'\r | |
857 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
858 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
859 | {\r | |
860 | EFI_STATUS Status;\r | |
861 | \r | |
862 | //\r | |
863 | // Set data rate 500kbs\r | |
864 | //\r | |
865 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
866 | \r | |
867 | //\r | |
868 | // Io delay\r | |
869 | //\r | |
870 | MicroSecondDelay (50);\r | |
871 | \r | |
872 | Status = Specify (FdcDev);\r | |
873 | \r | |
874 | if (EFI_ERROR (Status)) {\r | |
875 | return EFI_DEVICE_ERROR;\r | |
876 | }\r | |
877 | \r | |
878 | return EFI_SUCCESS;\r | |
879 | }\r | |
880 | \r | |
881 | EFI_STATUS\r | |
882 | ReadWriteDataSector (\r | |
883 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
884 | IN VOID *HostAddress,\r | |
885 | IN EFI_LBA Lba,\r | |
886 | IN UINTN NumberOfBlocks,\r | |
887 | IN BOOLEAN Read\r | |
888 | )\r | |
889 | /*++\r | |
890 | \r | |
891 | Routine Description: Read or Write a number of blocks in the same cylinder\r | |
892 | Parameters:\r | |
893 | FdcDev FDC_BLK_IO_DEV * : A pointer to Data Structure FDC_BLK_IO_DEV\r | |
894 | Buffer VOID *:\r | |
895 | Lba EFI_LBA:\r | |
896 | NumberOfBlocks UINTN:\r | |
ae5852b2 | 897 | Read BOOLEAN:\r |
11f43dfd | 898 | Returns:\r |
ae5852b2 | 899 | EFI_SUCCESS:\r |
11f43dfd | 900 | \r |
901 | --*/\r | |
902 | // GC_TODO: function comment is missing 'Arguments:'\r | |
903 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
904 | // GC_TODO: HostAddress - add argument and description to function comment\r | |
905 | // GC_TODO: Lba - add argument and description to function comment\r | |
906 | // GC_TODO: NumberOfBlocks - add argument and description to function comment\r | |
907 | // GC_TODO: Read - add argument and description to function comment\r | |
908 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
909 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
910 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
911 | // GC_TODO: EFI_TIMEOUT - add return value to function comment\r | |
912 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
913 | {\r | |
914 | EFI_STATUS Status;\r | |
915 | FDD_COMMAND_PACKET1 Command;\r | |
916 | FDD_RESULT_PACKET Result;\r | |
917 | UINTN Index;\r | |
918 | UINTN Times;\r | |
919 | UINT8 *CommandPointer;\r | |
920 | \r | |
921 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
922 | EFI_ISA_IO_PROTOCOL *IsaIo;\r | |
923 | UINTN NumberofBytes;\r | |
924 | VOID *Mapping;\r | |
925 | EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r | |
926 | EFI_STATUS Status1;\r | |
927 | UINT8 Channel;\r | |
928 | EFI_ISA_ACPI_RESOURCE *ResourceItem;\r | |
929 | UINT32 Attribute;\r | |
930 | \r | |
931 | Status = Seek (FdcDev, Lba);\r | |
932 | if (EFI_ERROR (Status)) {\r | |
933 | return EFI_DEVICE_ERROR;\r | |
934 | }\r | |
935 | //\r | |
936 | // Map Dma\r | |
937 | //\r | |
938 | IsaIo = FdcDev->IsaIo;\r | |
939 | NumberofBytes = NumberOfBlocks * 512;\r | |
940 | if (Read == READ) {\r | |
941 | Operation = EfiIsaIoOperationSlaveWrite;\r | |
942 | } else {\r | |
943 | Operation = EfiIsaIoOperationSlaveRead;\r | |
944 | }\r | |
945 | \r | |
946 | ResourceItem = IsaIo->ResourceList->ResourceItem;\r | |
947 | Index = 0;\r | |
948 | while (ResourceItem[Index].Type != EfiIsaAcpiResourceEndOfList) {\r | |
949 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceDma) {\r | |
950 | break;\r | |
951 | }\r | |
952 | \r | |
953 | Index++;\r | |
954 | }\r | |
955 | \r | |
956 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceEndOfList) {\r | |
957 | return EFI_DEVICE_ERROR;\r | |
958 | }\r | |
959 | \r | |
960 | Channel = (UINT8) IsaIo->ResourceList->ResourceItem[Index].StartRange;\r | |
961 | Attribute = IsaIo->ResourceList->ResourceItem[Index].Attribute;\r | |
962 | \r | |
963 | Status1 = IsaIo->Map (\r | |
964 | IsaIo,\r | |
965 | Operation,\r | |
966 | Channel,\r | |
967 | Attribute,\r | |
968 | HostAddress,\r | |
969 | &NumberofBytes,\r | |
970 | &DeviceAddress,\r | |
971 | &Mapping\r | |
972 | );\r | |
973 | if (EFI_ERROR (Status1)) {\r | |
974 | return Status1;\r | |
975 | }\r | |
976 | \r | |
977 | //\r | |
978 | // Allocate Read or Write command packet\r | |
979 | //\r | |
980 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET1));\r | |
981 | if (Read == READ) {\r | |
982 | Command.CommandCode = READ_DATA_CMD | CMD_MT | CMD_MFM | CMD_SK;\r | |
983 | } else {\r | |
984 | Command.CommandCode = WRITE_DATA_CMD | CMD_MT | CMD_MFM;\r | |
985 | }\r | |
986 | \r | |
987 | FillPara (FdcDev, Lba, &Command);\r | |
988 | \r | |
989 | //\r | |
990 | // Write command bytes to FDC\r | |
991 | //\r | |
992 | CommandPointer = (UINT8 *) (&Command);\r | |
993 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET1); Index++) {\r | |
994 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
995 | return EFI_DEVICE_ERROR;\r | |
996 | }\r | |
997 | }\r | |
998 | //\r | |
999 | // wait for some time\r | |
1000 | //\r | |
1001 | Times = (STALL_1_SECOND / 50) + 1;\r | |
1002 | do {\r | |
1003 | if ((FdcReadPort (FdcDev, FDC_REGISTER_MSR) & 0xc0) == 0xc0) {\r | |
1004 | break;\r | |
1005 | }\r | |
1006 | \r | |
1007 | MicroSecondDelay (50);\r | |
1008 | Times = Times - 1;\r | |
1009 | } while (Times);\r | |
1010 | \r | |
1011 | if (Times == 0) {\r | |
1012 | return EFI_TIMEOUT;\r | |
1013 | }\r | |
1014 | //\r | |
1015 | // Read result bytes from FDC\r | |
1016 | //\r | |
1017 | CommandPointer = (UINT8 *) (&Result);\r | |
1018 | for (Index = 0; Index < sizeof (FDD_RESULT_PACKET); Index++) {\r | |
1019 | if (EFI_ERROR (DataInByte (FdcDev, CommandPointer++))) {\r | |
1020 | return EFI_DEVICE_ERROR;\r | |
1021 | }\r | |
1022 | }\r | |
1023 | //\r | |
1024 | // Flush before Unmap\r | |
1025 | //\r | |
1026 | if (Read == READ) {\r | |
1027 | Status1 = IsaIo->Flush (IsaIo);\r | |
1028 | if (EFI_ERROR (Status1)) {\r | |
1029 | return Status1;\r | |
1030 | }\r | |
1031 | }\r | |
1032 | //\r | |
1033 | // Unmap Dma\r | |
1034 | //\r | |
1035 | Status1 = IsaIo->Unmap (IsaIo, Mapping);\r | |
1036 | if (EFI_ERROR (Status1)) {\r | |
1037 | return Status1;\r | |
1038 | }\r | |
1039 | \r | |
1040 | return CheckResult (&Result, FdcDev);\r | |
1041 | }\r | |
1042 | \r | |
1043 | VOID\r | |
1044 | FillPara (\r | |
1045 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1046 | IN EFI_LBA Lba,\r | |
1047 | IN FDD_COMMAND_PACKET1 *Command\r | |
1048 | )\r | |
1049 | /*++\r | |
1050 | \r | |
1051 | Routine Description: Fill in Parameter\r | |
1052 | Parameters:\r | |
1053 | Returns:\r | |
ae5852b2 | 1054 | \r |
11f43dfd | 1055 | --*/\r |
1056 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1057 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1058 | // GC_TODO: Lba - add argument and description to function comment\r | |
1059 | // GC_TODO: Command - add argument and description to function comment\r | |
1060 | {\r | |
1061 | UINT8 EndOfTrack;\r | |
1062 | \r | |
1063 | //\r | |
1064 | // Get EndOfTrack from the Para table\r | |
1065 | //\r | |
1066 | EndOfTrack = DISK_1440K_EOT;\r | |
1067 | \r | |
1068 | //\r | |
1069 | // Fill the command parameter\r | |
1070 | //\r | |
1071 | if (FdcDev->Disk == FDC_DISK0) {\r | |
1072 | Command->DiskHeadSel = 0;\r | |
1073 | } else {\r | |
1074 | Command->DiskHeadSel = 1;\r | |
1075 | }\r | |
1076 | \r | |
1077 | Command->Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
1078 | Command->Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
1079 | Command->Sector = (UINT8) ((UINT8) ((UINTN) Lba % EndOfTrack) + 1);\r | |
1080 | Command->DiskHeadSel = (UINT8) (Command->DiskHeadSel | (Command->Head << 2));\r | |
1081 | Command->Number = DISK_1440K_NUMBER;\r | |
1082 | Command->EndOfTrack = DISK_1440K_EOT;\r | |
1083 | Command->GapLength = DISK_1440K_GPL;\r | |
1084 | Command->DataLength = DISK_1440K_DTL;\r | |
1085 | }\r | |
1086 | \r | |
1087 | EFI_STATUS\r | |
1088 | DataInByte (\r | |
1089 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1090 | IN OUT UINT8 *Pointer\r | |
1091 | )\r | |
1092 | /*++\r | |
1093 | \r | |
1094 | Routine Description: Read result byte from Data Register of FDC\r | |
1095 | Parameters:\r | |
ae5852b2 | 1096 | Pointer UINT8 *: Be used to save result byte read from FDC\r |
11f43dfd | 1097 | Returns:\r |
1098 | EFI_SUCCESS: Read result byte from FDC successfully\r | |
1099 | EFI_DEVICE_ERROR: The FDC is not ready to be read\r | |
1100 | \r | |
1101 | --*/\r | |
1102 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1103 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1104 | // GC_TODO: Pointer - add argument and description to function comment\r | |
1105 | {\r | |
1106 | UINT8 data;\r | |
1107 | \r | |
1108 | //\r | |
1109 | // wait for 1ms and detect the FDC is ready to be read\r | |
1110 | //\r | |
1111 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_IN, 1))) {\r | |
1112 | return EFI_DEVICE_ERROR;\r | |
1113 | //\r | |
1114 | // is not ready\r | |
1115 | //\r | |
1116 | }\r | |
1117 | \r | |
1118 | data = FdcReadPort (FdcDev, FDC_REGISTER_DTR);\r | |
1119 | \r | |
1120 | //\r | |
1121 | // Io delay\r | |
1122 | //\r | |
1123 | MicroSecondDelay (50);\r | |
1124 | \r | |
1125 | *Pointer = data;\r | |
1126 | return EFI_SUCCESS;\r | |
1127 | }\r | |
1128 | \r | |
1129 | EFI_STATUS\r | |
1130 | DataOutByte (\r | |
1131 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1132 | IN UINT8 *Pointer\r | |
1133 | )\r | |
1134 | /*++\r | |
1135 | \r | |
1136 | Routine Description: Write command byte to Data Register of FDC\r | |
1137 | Parameters:\r | |
ae5852b2 | 1138 | Pointer UINT8 *: Be used to save command byte written to FDC\r |
11f43dfd | 1139 | Returns:\r |
1140 | EFI_SUCCESS: Write command byte to FDC successfully\r | |
1141 | EFI_DEVICE_ERROR: The FDC is not ready to be written\r | |
1142 | \r | |
1143 | --*/\r | |
1144 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1145 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1146 | // GC_TODO: Pointer - add argument and description to function comment\r | |
1147 | {\r | |
1148 | UINT8 data;\r | |
1149 | \r | |
1150 | //\r | |
1151 | // wait for 1ms and detect the FDC is ready to be written\r | |
1152 | //\r | |
1153 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_OUT, 1))) {\r | |
1154 | return EFI_DEVICE_ERROR;\r | |
1155 | //\r | |
1156 | // is not ready\r | |
1157 | //\r | |
1158 | }\r | |
1159 | \r | |
1160 | data = *Pointer;\r | |
1161 | \r | |
1162 | FdcWritePort (FdcDev, FDC_REGISTER_DTR, data);\r | |
1163 | \r | |
1164 | //\r | |
1165 | // Io delay\r | |
1166 | //\r | |
1167 | MicroSecondDelay (50);\r | |
1168 | \r | |
1169 | return EFI_SUCCESS;\r | |
1170 | }\r | |
1171 | \r | |
1172 | EFI_STATUS\r | |
1173 | FddWaitForBSYClear (\r | |
1174 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1175 | IN UINTN TimeoutInSeconds\r | |
1176 | )\r | |
1177 | /*++\r | |
1178 | \r | |
ae5852b2 | 1179 | Routine Description: Detect the specified floppy logic drive is busy or\r |
11f43dfd | 1180 | not within a period of time\r |
1181 | Parameters:\r | |
1182 | Disk EFI_FDC_DISK: Indicate it is drive A or drive B\r | |
ae5852b2 | 1183 | TimeoutInSeconds UINTN: the time period for waiting\r |
11f43dfd | 1184 | Returns:\r |
1185 | EFI_SUCCESS: The drive and command are not busy\r | |
ae5852b2 | 1186 | EFI_TIMEOUT: The drive or command is still busy after a period time that\r |
11f43dfd | 1187 | set by TimeoutInSeconds\r |
1188 | \r | |
1189 | --*/\r | |
1190 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1191 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1192 | // GC_TODO: TimeoutInSeconds - add argument and description to function comment\r | |
1193 | {\r | |
1194 | UINTN Delay;\r | |
1195 | UINT8 StatusRegister;\r | |
1196 | UINT8 Mask;\r | |
1197 | \r | |
1198 | //\r | |
1199 | // How to determine drive and command are busy or not: by the bits of\r | |
1200 | // Main Status Register\r | |
1201 | // bit0: Drive 0 busy (drive A)\r | |
1202 | // bit1: Drive 1 busy (drive B)\r | |
1203 | // bit4: Command busy\r | |
1204 | //\r | |
1205 | //\r | |
1206 | // set mask: for drive A set bit0 & bit4; for drive B set bit1 & bit4\r | |
1207 | //\r | |
1208 | Mask = (UINT8) ((FdcDev->Disk == FDC_DISK0 ? MSR_DAB : MSR_DBB) | MSR_CB);\r | |
1209 | \r | |
1210 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1211 | do {\r | |
1212 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1213 | if ((StatusRegister & Mask) == 0x00) {\r | |
1214 | break;\r | |
1215 | //\r | |
1216 | // not busy\r | |
1217 | //\r | |
1218 | }\r | |
1219 | \r | |
1220 | MicroSecondDelay (50);\r | |
1221 | Delay = Delay - 1;\r | |
1222 | } while (Delay);\r | |
1223 | \r | |
1224 | if (Delay == 0) {\r | |
1225 | return EFI_TIMEOUT;\r | |
1226 | }\r | |
1227 | \r | |
1228 | return EFI_SUCCESS;\r | |
1229 | }\r | |
1230 | \r | |
1231 | EFI_STATUS\r | |
1232 | FddDRQReady (\r | |
1233 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1234 | IN BOOLEAN Dio,\r | |
1235 | IN UINTN TimeoutInSeconds\r | |
1236 | )\r | |
1237 | /*++\r | |
1238 | \r | |
1239 | Routine Description: Determine whether FDC is ready to write or read\r | |
1240 | Parameters:\r | |
1241 | Dio BOOLEAN: Indicate the FDC is waiting to write or read\r | |
ae5852b2 | 1242 | TimeoutInSeconds UINTN: The time period for waiting\r |
11f43dfd | 1243 | Returns:\r |
1244 | EFI_SUCCESS: FDC is ready to write or read\r | |
1245 | EFI_NOT_READY: FDC is not ready within the specified time period\r | |
1246 | \r | |
1247 | --*/\r | |
1248 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1249 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1250 | // GC_TODO: Dio - add argument and description to function comment\r | |
1251 | // GC_TODO: TimeoutInSeconds - add argument and description to function comment\r | |
1252 | {\r | |
1253 | UINTN Delay;\r | |
1254 | UINT8 StatusRegister;\r | |
1255 | UINT8 DataInOut;\r | |
1256 | \r | |
1257 | //\r | |
1258 | // Before writing to FDC or reading from FDC, the Host must examine\r | |
1259 | // the bit7(RQM) and bit6(DIO) of the Main Status Register.\r | |
1260 | // That is to say:\r | |
1261 | // command bytes can not be written to Data Register\r | |
1262 | // unless RQM is 1 and DIO is 0\r | |
1263 | // result bytes can not be read from Data Register\r | |
1264 | // unless RQM is 1 and DIO is 1\r | |
1265 | //\r | |
1266 | DataInOut = (UINT8) (Dio << 6);\r | |
1267 | //\r | |
1268 | // in order to compare bit6\r | |
1269 | //\r | |
1270 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1271 | do {\r | |
1272 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1273 | if ((StatusRegister & MSR_RQM) == MSR_RQM && (StatusRegister & MSR_DIO) == DataInOut) {\r | |
1274 | break;\r | |
1275 | //\r | |
1276 | // FDC is ready\r | |
1277 | //\r | |
1278 | }\r | |
1279 | \r | |
1280 | MicroSecondDelay (50);\r | |
1281 | //\r | |
1282 | // Stall for 50 us\r | |
1283 | //\r | |
1284 | Delay = Delay - 1;\r | |
1285 | } while (Delay);\r | |
1286 | \r | |
1287 | if (Delay == 0) {\r | |
1288 | return EFI_NOT_READY;\r | |
1289 | //\r | |
1290 | // FDC is not ready within the specified time period\r | |
1291 | //\r | |
1292 | }\r | |
1293 | \r | |
1294 | return EFI_SUCCESS;\r | |
1295 | }\r | |
1296 | \r | |
1297 | EFI_STATUS\r | |
1298 | CheckResult (\r | |
1299 | IN FDD_RESULT_PACKET *Result,\r | |
1300 | IN OUT FDC_BLK_IO_DEV *FdcDev\r | |
1301 | )\r | |
1302 | /*++\r | |
1303 | \r | |
1304 | Routine Description:\r | |
1305 | \r | |
1306 | GC_TODO: Add function description\r | |
1307 | \r | |
1308 | Arguments:\r | |
1309 | \r | |
1310 | Result - GC_TODO: add argument description\r | |
1311 | FdcDev - GC_TODO: add argument description\r | |
1312 | \r | |
1313 | Returns:\r | |
1314 | \r | |
1315 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1316 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1317 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1318 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
1319 | \r | |
1320 | --*/\r | |
1321 | {\r | |
1322 | //\r | |
1323 | // Check Status Register0\r | |
1324 | //\r | |
1325 | if ((Result->Status0 & STS0_IC) != IC_NT) {\r | |
1326 | if ((Result->Status0 & STS0_SE) == 0x20) {\r | |
1327 | //\r | |
1328 | // seek error\r | |
1329 | //\r | |
1330 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1331 | }\r | |
1332 | \r | |
1333 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1334 | return EFI_DEVICE_ERROR;\r | |
1335 | }\r | |
1336 | //\r | |
1337 | // Check Status Register1\r | |
1338 | //\r | |
1339 | if (Result->Status1 & (STS1_EN | STS1_DE | STS1_OR | STS1_ND | STS1_NW | STS1_MA)) {\r | |
1340 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1341 | return EFI_DEVICE_ERROR;\r | |
1342 | }\r | |
1343 | //\r | |
1344 | // Check Status Register2\r | |
1345 | //\r | |
1346 | if (Result->Status2 & (STS2_CM | STS2_DD | STS2_WC | STS2_BC | STS2_MD)) {\r | |
1347 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1348 | return EFI_DEVICE_ERROR;\r | |
1349 | }\r | |
1350 | \r | |
1351 | return EFI_SUCCESS;\r | |
1352 | }\r | |
1353 | \r | |
1354 | EFI_STATUS\r | |
1355 | CheckStatus3 (\r | |
1356 | IN UINT8 StatusRegister3\r | |
1357 | )\r | |
1358 | /*++\r | |
1359 | \r | |
1360 | Routine Description: Check the drive status information\r | |
1361 | Parameters:\r | |
ae5852b2 | 1362 | StatusRegister3 UINT8: the value of Status Register 3\r |
11f43dfd | 1363 | Returns:\r |
ae5852b2 | 1364 | EFI_SUCCESS:\r |
11f43dfd | 1365 | EFI_WRITE_PROTECTED: The disk is write protected\r |
1366 | \r | |
1367 | --*/\r | |
1368 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1369 | // GC_TODO: StatusRegister3 - add argument and description to function comment\r | |
1370 | {\r | |
1371 | if (StatusRegister3 & STS3_WP) {\r | |
1372 | return EFI_WRITE_PROTECTED;\r | |
1373 | }\r | |
1374 | \r | |
1375 | return EFI_SUCCESS;\r | |
1376 | }\r | |
1377 | \r | |
1378 | UINTN\r | |
1379 | GetTransferBlockCount (\r | |
1380 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1381 | IN EFI_LBA LBA,\r | |
1382 | IN UINTN NumberOfBlocks\r | |
1383 | )\r | |
1384 | /*++\r | |
1385 | \r | |
ae5852b2 | 1386 | Routine Description: Calculate the number of block in the same cylinder\r |
11f43dfd | 1387 | according to LBA\r |
1388 | Parameters:\r | |
1389 | FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
ae5852b2 | 1390 | LBA EFI_LBA: The starting logic block address\r |
11f43dfd | 1391 | NumberOfBlocks UINTN: The number of blocks\r |
1392 | Returns:\r | |
ae5852b2 | 1393 | UINTN : The number of blocks in the same cylinder which the starting\r |
11f43dfd | 1394 | logic block address is LBA\r |
1395 | \r | |
1396 | --*/\r | |
1397 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1398 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1399 | // GC_TODO: LBA - add argument and description to function comment\r | |
1400 | // GC_TODO: NumberOfBlocks - add argument and description to function comment\r | |
1401 | {\r | |
1402 | UINT8 EndOfTrack;\r | |
1403 | UINT8 Head;\r | |
1404 | UINT8 SectorsInTrack;\r | |
1405 | \r | |
1406 | //\r | |
1407 | // Calculate the number of block in the same cylinder\r | |
1408 | //\r | |
1409 | EndOfTrack = DISK_1440K_EOT;\r | |
1410 | Head = (UINT8) ((UINTN) LBA / EndOfTrack % 2);\r | |
1411 | \r | |
1412 | SectorsInTrack = (UINT8) (EndOfTrack * (2 - Head) - (UINT8) ((UINTN) LBA % EndOfTrack));\r | |
1413 | if (SectorsInTrack < NumberOfBlocks) {\r | |
1414 | return SectorsInTrack;\r | |
1415 | } else {\r | |
1416 | return NumberOfBlocks;\r | |
1417 | }\r | |
1418 | }\r | |
1419 | \r | |
1420 | VOID\r | |
1421 | EFIAPI\r | |
1422 | FddTimerProc (\r | |
1423 | IN EFI_EVENT Event,\r | |
1424 | IN VOID *Context\r | |
1425 | )\r | |
1426 | /*++\r | |
1427 | \r | |
1428 | Routine Description: When the Timer(2s) off, turn the drive's motor off\r | |
1429 | Parameters:\r | |
ae5852b2 | 1430 | Event EFI_EVENT: Event(the timer) whose notification function is being\r |
11f43dfd | 1431 | invoked\r |
ae5852b2 | 1432 | Context VOID *: Pointer to the notification function's context\r |
11f43dfd | 1433 | Returns:\r |
1434 | VOID\r | |
1435 | \r | |
1436 | --*/\r | |
1437 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1438 | // GC_TODO: Event - add argument and description to function comment\r | |
1439 | // GC_TODO: Context - add argument and description to function comment\r | |
1440 | {\r | |
1441 | FDC_BLK_IO_DEV *FdcDev;\r | |
1442 | UINT8 data;\r | |
1443 | \r | |
1444 | FdcDev = (FDC_BLK_IO_DEV *) Context;\r | |
1445 | \r | |
1446 | //\r | |
1447 | // Get the motor status\r | |
1448 | //\r | |
1449 | data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r | |
1450 | \r | |
1451 | if (((FdcDev->Disk == FDC_DISK0) && ((data & 0x10) != 0x10)) ||\r | |
1452 | ((FdcDev->Disk == FDC_DISK1) && ((data & 0x21) != 0x21))\r | |
1453 | ) {\r | |
1454 | return ;\r | |
1455 | }\r | |
1456 | //\r | |
1457 | // the motor is on, so need motor off\r | |
1458 | //\r | |
1459 | data = 0x0C;\r | |
1460 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
1461 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
1462 | MicroSecondDelay (500);\r | |
1463 | }\r | |
1464 | \r | |
1465 | UINT8\r | |
1466 | FdcReadPort (\r | |
1467 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1468 | IN UINT32 Offset\r | |
1469 | )\r | |
1470 | /*++\r | |
1471 | \r | |
ae5852b2 | 1472 | Routine Description: Read I/O port for FDC\r |
11f43dfd | 1473 | Parameters:\r |
1474 | Returns:\r | |
ae5852b2 | 1475 | \r |
11f43dfd | 1476 | --*/\r |
1477 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1478 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1479 | // GC_TODO: Offset - add argument and description to function comment\r | |
1480 | {\r | |
1481 | UINT8 Data;\r | |
1482 | \r | |
1483 | //\r | |
1484 | // Call IsaIo\r | |
1485 | //\r | |
1486 | FdcDev->IsaIo->Io.Read (\r | |
1487 | FdcDev->IsaIo,\r | |
1488 | EfiIsaIoWidthUint8,\r | |
1489 | FdcDev->BaseAddress + Offset,\r | |
1490 | 1,\r | |
1491 | &Data\r | |
1492 | );\r | |
1493 | \r | |
1494 | return Data;\r | |
1495 | }\r | |
1496 | \r | |
1497 | VOID\r | |
1498 | FdcWritePort (\r | |
1499 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1500 | IN UINT32 Offset,\r | |
1501 | IN UINT8 Data\r | |
1502 | )\r | |
1503 | /*++\r | |
1504 | \r | |
ae5852b2 | 1505 | Routine Description: Write I/O port for FDC\r |
11f43dfd | 1506 | Parameters:\r |
1507 | Returns:\r | |
ae5852b2 | 1508 | \r |
11f43dfd | 1509 | --*/\r |
1510 | // GC_TODO: function comment is missing 'Arguments:'\r | |
1511 | // GC_TODO: FdcDev - add argument and description to function comment\r | |
1512 | // GC_TODO: Offset - add argument and description to function comment\r | |
1513 | // GC_TODO: Data - add argument and description to function comment\r | |
1514 | {\r | |
1515 | \r | |
1516 | //\r | |
1517 | // Call IsaIo\r | |
1518 | //\r | |
1519 | FdcDev->IsaIo->Io.Write (\r | |
1520 | FdcDev->IsaIo,\r | |
1521 | EfiIsaIoWidthUint8,\r | |
1522 | FdcDev->BaseAddress + Offset,\r | |
1523 | 1,\r | |
1524 | &Data\r | |
1525 | );\r | |
1526 | }\r |