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Commit | Line | Data |
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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 | |
bcd70414 | 25 | /**\r |
26 | \r | |
27 | Detect the floppy drive is presented or not\r | |
28 | \r | |
29 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r | |
30 | @retval EFI_SUCCESS Drive is presented\r | |
31 | @retval EFI_NOT_FOUND Drive is not presented\r | |
32 | \r | |
33 | **/\r | |
11f43dfd | 34 | EFI_STATUS\r |
35 | DiscoverFddDevice (\r | |
36 | IN FDC_BLK_IO_DEV *FdcDev\r | |
37 | )\r | |
11f43dfd | 38 | {\r |
39 | EFI_STATUS Status;\r | |
40 | \r | |
41 | FdcDev->BlkIo.Media = &FdcDev->BlkMedia;\r | |
42 | \r | |
43 | //\r | |
44 | // Call FddIndentify subroutine\r | |
45 | //\r | |
46 | Status = FddIdentify (FdcDev);\r | |
47 | if (EFI_ERROR (Status)) {\r | |
48 | return EFI_NOT_FOUND;\r | |
49 | }\r | |
50 | \r | |
51 | FdcDev->BlkIo.Reset = FdcReset;\r | |
52 | FdcDev->BlkIo.FlushBlocks = FddFlushBlocks;\r | |
53 | FdcDev->BlkIo.ReadBlocks = FddReadBlocks;\r | |
54 | FdcDev->BlkIo.WriteBlocks = FddWriteBlocks;\r | |
55 | FdcDev->BlkMedia.LogicalPartition = FALSE;\r | |
56 | FdcDev->BlkMedia.WriteCaching = FALSE;\r | |
57 | \r | |
58 | return EFI_SUCCESS;\r | |
59 | }\r | |
60 | \r | |
bcd70414 | 61 | /**\r |
62 | \r | |
63 | Do recalibrate and see the drive is presented or not\r | |
64 | Set the media parameters\r | |
65 | \r | |
66 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r | |
67 | @return the drive is presented or not\r | |
68 | \r | |
69 | **/\r | |
11f43dfd | 70 | EFI_STATUS\r |
71 | FddIdentify (\r | |
72 | IN FDC_BLK_IO_DEV *FdcDev\r | |
73 | )\r | |
11f43dfd | 74 | {\r |
75 | EFI_STATUS Status;\r | |
76 | \r | |
77 | //\r | |
78 | // Set Floppy Disk Controller's motor on\r | |
79 | //\r | |
80 | Status = MotorOn (FdcDev);\r | |
81 | if (EFI_ERROR (Status)) {\r | |
82 | return EFI_DEVICE_ERROR;\r | |
83 | }\r | |
84 | \r | |
85 | Status = Recalibrate (FdcDev);\r | |
86 | \r | |
87 | if (EFI_ERROR (Status)) {\r | |
88 | MotorOff (FdcDev);\r | |
89 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
90 | return EFI_DEVICE_ERROR;\r | |
91 | }\r | |
92 | //\r | |
93 | // Set Media Parameter\r | |
94 | //\r | |
95 | FdcDev->BlkIo.Media->RemovableMedia = TRUE;\r | |
96 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
97 | //\r | |
98 | // investigate\r | |
99 | //\r | |
100 | FdcDev->BlkIo.Media->MediaId = 0;\r | |
101 | \r | |
102 | //\r | |
103 | // Check Media\r | |
104 | //\r | |
105 | Status = DisketChanged (FdcDev);\r | |
11f43dfd | 106 | \r |
ae5852b2 | 107 | if (Status == EFI_NO_MEDIA) {\r |
108 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r | |
179a2e97 | 109 | } else if ((Status != EFI_MEDIA_CHANGED) &&\r |
110 | (Status != EFI_SUCCESS)) {\r | |
11f43dfd | 111 | MotorOff (FdcDev);\r |
112 | return Status;\r | |
113 | }\r | |
ae5852b2 | 114 | \r |
11f43dfd | 115 | //\r |
116 | // Check Disk Write Protected\r | |
117 | //\r | |
118 | Status = SenseDrvStatus (FdcDev, 0);\r | |
11f43dfd | 119 | \r |
ae5852b2 | 120 | if (Status == EFI_WRITE_PROTECTED) {\r |
121 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
122 | } else if (Status == EFI_SUCCESS) {\r | |
11f43dfd | 123 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r |
ae5852b2 | 124 | } else {\r |
11f43dfd | 125 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 126 | }\r |
127 | \r | |
128 | MotorOff (FdcDev);\r | |
129 | \r | |
130 | //\r | |
131 | // Set Media Default Type\r | |
132 | //\r | |
133 | FdcDev->BlkIo.Media->BlockSize = DISK_1440K_BYTEPERSECTOR;\r | |
134 | FdcDev->BlkIo.Media->LastBlock = DISK_1440K_EOT * 2 * (DISK_1440K_MAXTRACKNUM + 1) - 1;\r | |
135 | \r | |
136 | return EFI_SUCCESS;\r | |
137 | }\r | |
138 | \r | |
bcd70414 | 139 | /**\r |
140 | \r | |
141 | Reset the Floppy Logic Drive\r | |
142 | \r | |
143 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r | |
144 | \r | |
145 | @retval EFI_SUCCESS: The Floppy Logic Drive is reset\r | |
146 | @retval EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly and\r | |
147 | can not be reset\r | |
148 | \r | |
149 | **/\r | |
11f43dfd | 150 | EFI_STATUS\r |
151 | FddReset (\r | |
152 | IN FDC_BLK_IO_DEV *FdcDev\r | |
153 | )\r | |
11f43dfd | 154 | {\r |
155 | UINT8 data;\r | |
156 | UINT8 StatusRegister0;\r | |
157 | UINT8 PresentCylinderNumber;\r | |
158 | UINTN Index;\r | |
159 | \r | |
160 | //\r | |
161 | // Report reset progress code\r | |
162 | //\r | |
163 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
164 | EFI_PROGRESS_CODE,\r | |
165 | EFI_PERIPHERAL_REMOVABLE_MEDIA | EFI_P_PC_RESET,\r | |
166 | FdcDev->DevicePath\r | |
167 | );\r | |
168 | \r | |
169 | //\r | |
170 | // Reset specified Floppy Logic Drive according to FdcDev -> Disk\r | |
171 | // Set Digital Output Register(DOR) to do reset work\r | |
172 | // bit0 & bit1 of DOR : Drive Select\r | |
173 | // bit2 : Reset bit\r | |
174 | // bit3 : DMA and Int bit\r | |
175 | // Reset : a "0" written to bit2 resets the FDC, this reset will remain\r | |
176 | // active until\r | |
177 | // a "1" is written to this bit.\r | |
178 | // Reset step 1:\r | |
179 | // use bit0 & bit1 to select the logic drive\r | |
180 | // write "0" to bit2\r | |
181 | //\r | |
182 | data = 0x0;\r | |
183 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
184 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
185 | \r | |
186 | //\r | |
187 | // wait some time,at least 120us\r | |
188 | //\r | |
189 | MicroSecondDelay (500);\r | |
190 | \r | |
191 | //\r | |
192 | // Reset step 2:\r | |
193 | // write "1" to bit2\r | |
194 | // write "1" to bit3 : enable DMA\r | |
195 | //\r | |
196 | data |= 0x0C;\r | |
197 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
198 | \r | |
199 | //\r | |
200 | // Experience value\r | |
201 | //\r | |
202 | MicroSecondDelay (2000);\r | |
203 | \r | |
204 | //\r | |
205 | // wait specified floppy logic drive is not busy\r | |
206 | //\r | |
207 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
208 | return EFI_DEVICE_ERROR;\r | |
209 | }\r | |
210 | //\r | |
211 | // Set the Transfer Data Rate\r | |
212 | //\r | |
213 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
214 | \r | |
215 | //\r | |
216 | // Experience value\r | |
217 | //\r | |
218 | MicroSecondDelay (100);\r | |
219 | \r | |
220 | //\r | |
221 | // Issue Sense interrupt command for each drive (total 4 drives)\r | |
222 | //\r | |
223 | for (Index = 0; Index < 4; Index++) {\r | |
224 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
225 | return EFI_DEVICE_ERROR;\r | |
226 | }\r | |
227 | }\r | |
228 | //\r | |
229 | // issue Specify command\r | |
230 | //\r | |
231 | if (EFI_ERROR (Specify (FdcDev))) {\r | |
232 | return EFI_DEVICE_ERROR;\r | |
233 | }\r | |
234 | \r | |
235 | return EFI_SUCCESS;\r | |
236 | }\r | |
237 | \r | |
bcd70414 | 238 | /**\r |
239 | \r | |
240 | Turn the drive's motor on\r | |
241 | The drive's motor must be on before any command can be executed\r | |
242 | \r | |
243 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r | |
244 | \r | |
245 | @retval EFI_SUCCESS: Turn the drive's motor on successfully\r | |
246 | @retval EFI_DEVICE_ERROR: The drive is busy, so can not turn motor on\r | |
247 | @retval EFI_INVALID_PARAMETER: Fail to Set timer(Cancel timer)\r | |
248 | \r | |
249 | **/\r | |
11f43dfd | 250 | EFI_STATUS\r |
251 | MotorOn (\r | |
252 | IN FDC_BLK_IO_DEV *FdcDev\r | |
253 | )\r | |
11f43dfd | 254 | {\r |
255 | EFI_STATUS Status;\r | |
256 | UINT8 data;\r | |
257 | \r | |
258 | //\r | |
259 | // Control of the floppy drive motors is a big pain. If motor is off, you have\r | |
260 | // to turn it on first. But you can not leave the motor on all the time, since\r | |
261 | // that would wear out the disk. On the other hand, if you turn the motor off\r | |
262 | // after each operation, the system performance will be awful. The compromise\r | |
263 | // used in this driver is to leave the motor on for 2 seconds after\r | |
264 | // each operation. If a new operation is started in that interval(2s),\r | |
265 | // the motor need not be turned on again. If no new operation is started,\r | |
266 | // a timer goes off and the motor is turned off\r | |
267 | //\r | |
268 | //\r | |
269 | // Cancel the timer\r | |
270 | //\r | |
271 | Status = gBS->SetTimer (FdcDev->Event, TimerCancel, 0);\r | |
272 | \r | |
273 | if (EFI_ERROR (Status)) {\r | |
274 | return EFI_INVALID_PARAMETER;\r | |
275 | }\r | |
276 | //\r | |
277 | // Get the motor status\r | |
278 | //\r | |
279 | data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r | |
280 | \r | |
281 | if (((FdcDev->Disk == FDC_DISK0) && ((data & 0x10) == 0x10)) ||\r | |
282 | ((FdcDev->Disk == FDC_DISK1) && ((data & 0x21) == 0x21))\r | |
283 | ) {\r | |
284 | return EFI_SUCCESS;\r | |
285 | }\r | |
286 | //\r | |
287 | // The drive's motor is off, so need turn it on\r | |
288 | // first look at command and drive are busy or not\r | |
289 | //\r | |
290 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
291 | return EFI_DEVICE_ERROR;\r | |
292 | }\r | |
293 | //\r | |
294 | // for drive A: 1CH, drive B: 2DH\r | |
295 | //\r | |
296 | data = 0x0C;\r | |
297 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
298 | if (FdcDev->Disk == FDC_DISK0) {\r | |
299 | //\r | |
300 | // drive A\r | |
301 | //\r | |
302 | data |= DRVA_MOTOR_ON;\r | |
303 | } else {\r | |
304 | //\r | |
305 | // drive B\r | |
306 | //\r | |
307 | data |= DRVB_MOTOR_ON;\r | |
308 | }\r | |
309 | \r | |
310 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
311 | \r | |
312 | //\r | |
313 | // Experience value\r | |
314 | //\r | |
315 | MicroSecondDelay (4000);\r | |
316 | \r | |
317 | return EFI_SUCCESS;\r | |
318 | }\r | |
319 | \r | |
bcd70414 | 320 | /**\r |
321 | \r | |
322 | Set a Timer and when Timer goes off, turn the motor off\r | |
323 | \r | |
324 | \r | |
325 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV\r | |
326 | \r | |
327 | @retval EFI_SUCCESS: Set the Timer successfully\r | |
328 | @retval EFI_INVALID_PARAMETER: Fail to Set the timer\r | |
329 | \r | |
330 | **/\r | |
11f43dfd | 331 | EFI_STATUS\r |
332 | MotorOff (\r | |
333 | IN FDC_BLK_IO_DEV *FdcDev\r | |
334 | )\r | |
11f43dfd | 335 | {\r |
336 | //\r | |
337 | // Set the timer : 2s\r | |
338 | //\r | |
339 | return gBS->SetTimer (FdcDev->Event, TimerRelative, 20000000);\r | |
340 | }\r | |
341 | \r | |
bcd70414 | 342 | /**\r |
343 | Detect the disk in the drive is changed or not\r | |
344 | \r | |
345 | \r | |
346 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
347 | \r | |
348 | @retval EFI_SUCCESS: No disk media change\r | |
349 | @retval EFI_DEVICE_ERROR: Fail to do the recalibrate or seek operation\r | |
350 | @retval EFI_NO_MEDIA: No disk in the drive\r | |
351 | @retval EFI_MEDIA_CHANGED: There is a new disk in the drive\r | |
352 | **/\r | |
11f43dfd | 353 | EFI_STATUS\r |
354 | DisketChanged (\r | |
355 | IN FDC_BLK_IO_DEV *FdcDev\r | |
356 | )\r | |
11f43dfd | 357 | {\r |
358 | EFI_STATUS Status;\r | |
359 | UINT8 data;\r | |
360 | \r | |
361 | //\r | |
362 | // Check change line\r | |
363 | //\r | |
364 | data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r | |
365 | \r | |
366 | //\r | |
367 | // Io delay\r | |
368 | //\r | |
369 | MicroSecondDelay (50);\r | |
370 | \r | |
371 | if ((data & DIR_DCL) == 0x80) {\r | |
372 | //\r | |
373 | // disk change line is active\r | |
374 | //\r | |
375 | if (FdcDev->PresentCylinderNumber != 0) {\r | |
376 | Status = Recalibrate (FdcDev);\r | |
377 | } else {\r | |
378 | Status = Seek (FdcDev, 0x30);\r | |
379 | }\r | |
380 | \r | |
381 | if (EFI_ERROR (Status)) {\r | |
382 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
383 | return EFI_DEVICE_ERROR;\r | |
384 | //\r | |
385 | // Fail to do the seek or recalibrate operation\r | |
386 | //\r | |
387 | }\r | |
388 | \r | |
389 | data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r | |
390 | \r | |
391 | //\r | |
392 | // Io delay\r | |
393 | //\r | |
394 | MicroSecondDelay (50);\r | |
395 | \r | |
396 | if ((data & DIR_DCL) == 0x80) {\r | |
397 | return EFI_NO_MEDIA;\r | |
398 | }\r | |
399 | \r | |
400 | return EFI_MEDIA_CHANGED;\r | |
401 | }\r | |
402 | \r | |
403 | return EFI_SUCCESS;\r | |
404 | }\r | |
405 | \r | |
bcd70414 | 406 | /**\r |
407 | Do the Specify command, this command sets DMA operation\r | |
408 | and the initial values for each of the three internal\r | |
409 | times: HUT, SRT and HLT\r | |
410 | \r | |
fdb05fa3 | 411 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
bcd70414 | 412 | \r |
413 | @retval EFI_SUCCESS: Execute the Specify command successfully\r | |
414 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
415 | \r | |
416 | **/\r | |
11f43dfd | 417 | EFI_STATUS\r |
418 | Specify (\r | |
419 | IN FDC_BLK_IO_DEV *FdcDev\r | |
420 | )\r | |
11f43dfd | 421 | {\r |
422 | FDD_SPECIFY_CMD Command;\r | |
423 | UINTN Index;\r | |
424 | UINT8 *CommandPointer;\r | |
425 | \r | |
426 | ZeroMem (&Command, sizeof (FDD_SPECIFY_CMD));\r | |
427 | Command.CommandCode = SPECIFY_CMD;\r | |
428 | //\r | |
429 | // set SRT, HUT\r | |
430 | //\r | |
431 | Command.SrtHut = 0xdf;\r | |
432 | //\r | |
433 | // 0xdf;\r | |
434 | //\r | |
435 | // set HLT and DMA\r | |
436 | //\r | |
437 | Command.HltNd = 0x02;\r | |
438 | \r | |
439 | CommandPointer = (UINT8 *) (&Command);\r | |
440 | for (Index = 0; Index < sizeof (FDD_SPECIFY_CMD); Index++) {\r | |
441 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
442 | return EFI_DEVICE_ERROR;\r | |
443 | }\r | |
444 | }\r | |
445 | \r | |
446 | return EFI_SUCCESS;\r | |
447 | }\r | |
448 | \r | |
bcd70414 | 449 | /**\r |
450 | Set the head of floppy drive to track 0\r | |
451 | \r | |
452 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
453 | @retval EFI_SUCCESS: Execute the Recalibrate operation successfully\r | |
454 | @retval EFI_DEVICE_ERROR: Fail to execute the Recalibrate operation\r | |
455 | \r | |
456 | **/\r | |
11f43dfd | 457 | EFI_STATUS\r |
458 | Recalibrate (\r | |
459 | IN FDC_BLK_IO_DEV *FdcDev\r | |
460 | )\r | |
11f43dfd | 461 | {\r |
462 | FDD_COMMAND_PACKET2 Command;\r | |
463 | UINTN Index;\r | |
464 | UINT8 StatusRegister0;\r | |
465 | UINT8 PresentCylinderNumber;\r | |
466 | UINT8 *CommandPointer;\r | |
467 | UINT8 Count;\r | |
468 | \r | |
469 | Count = 2;\r | |
470 | \r | |
471 | while (Count > 0) {\r | |
472 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
473 | Command.CommandCode = RECALIBRATE_CMD;\r | |
474 | //\r | |
475 | // drive select\r | |
476 | //\r | |
477 | if (FdcDev->Disk == FDC_DISK0) {\r | |
478 | Command.DiskHeadSel = 0;\r | |
479 | //\r | |
480 | // 0\r | |
481 | //\r | |
482 | } else {\r | |
483 | Command.DiskHeadSel = 1;\r | |
484 | //\r | |
485 | // 1\r | |
486 | //\r | |
487 | }\r | |
488 | \r | |
489 | CommandPointer = (UINT8 *) (&Command);\r | |
490 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
491 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
492 | return EFI_DEVICE_ERROR;\r | |
493 | }\r | |
494 | }\r | |
495 | //\r | |
496 | // Experience value\r | |
497 | //\r | |
498 | MicroSecondDelay (250000);\r | |
499 | //\r | |
500 | // need modify according to 1.44M or 2.88M\r | |
501 | //\r | |
502 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
503 | return EFI_DEVICE_ERROR;\r | |
504 | }\r | |
505 | \r | |
506 | if ((StatusRegister0 & 0xf0) == 0x20 && PresentCylinderNumber == 0) {\r | |
507 | FdcDev->PresentCylinderNumber = 0;\r | |
508 | FdcDev->ControllerState->NeedRecalibrate = FALSE;\r | |
509 | return EFI_SUCCESS;\r | |
510 | } else {\r | |
511 | Count--;\r | |
512 | if (Count == 0) {\r | |
513 | return EFI_DEVICE_ERROR;\r | |
514 | }\r | |
515 | }\r | |
516 | }\r | |
517 | //\r | |
518 | // end while\r | |
519 | //\r | |
520 | return EFI_SUCCESS;\r | |
521 | }\r | |
522 | \r | |
bcd70414 | 523 | /**\r |
524 | Set the head of floppy drive to the new cylinder\r | |
525 | \r | |
526 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
527 | @param Lba EFI_LBA : The logic block address want to seek\r | |
528 | \r | |
529 | @retval EFI_SUCCESS: Execute the Seek operation successfully\r | |
530 | @retval EFI_DEVICE_ERROR: Fail to execute the Seek operation\r | |
531 | \r | |
532 | **/\r | |
11f43dfd | 533 | EFI_STATUS\r |
534 | Seek (\r | |
535 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
536 | IN EFI_LBA Lba\r | |
537 | )\r | |
11f43dfd | 538 | {\r |
539 | FDD_SEEK_CMD Command;\r | |
540 | UINT8 EndOfTrack;\r | |
541 | UINT8 Head;\r | |
542 | UINT8 Cylinder;\r | |
543 | UINT8 StatusRegister0;\r | |
544 | UINT8 *CommandPointer;\r | |
545 | UINT8 PresentCylinderNumber;\r | |
546 | UINTN Index;\r | |
547 | UINT8 DelayTime;\r | |
548 | \r | |
549 | if (FdcDev->ControllerState->NeedRecalibrate) {\r | |
550 | if (EFI_ERROR (Recalibrate (FdcDev))) {\r | |
551 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
552 | return EFI_DEVICE_ERROR;\r | |
553 | }\r | |
554 | }\r | |
555 | \r | |
556 | EndOfTrack = DISK_1440K_EOT;\r | |
557 | //\r | |
558 | // Calculate cylinder based on Lba and EOT\r | |
559 | //\r | |
560 | Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
561 | \r | |
562 | //\r | |
563 | // if the destination cylinder is the present cylinder, unnecessary to do the\r | |
564 | // seek operation\r | |
565 | //\r | |
566 | if (FdcDev->PresentCylinderNumber == Cylinder) {\r | |
567 | return EFI_SUCCESS;\r | |
568 | }\r | |
569 | //\r | |
570 | // Calculate the head : 0 or 1\r | |
571 | //\r | |
572 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
573 | \r | |
574 | ZeroMem (&Command, sizeof (FDD_SEEK_CMD));\r | |
575 | Command.CommandCode = SEEK_CMD;\r | |
576 | if (FdcDev->Disk == FDC_DISK0) {\r | |
577 | Command.DiskHeadSel = 0;\r | |
578 | //\r | |
579 | // 0\r | |
580 | //\r | |
581 | } else {\r | |
582 | Command.DiskHeadSel = 1;\r | |
583 | //\r | |
584 | // 1\r | |
585 | //\r | |
586 | }\r | |
587 | \r | |
588 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
589 | Command.NewCylinder = Cylinder;\r | |
590 | \r | |
591 | CommandPointer = (UINT8 *) (&Command);\r | |
592 | for (Index = 0; Index < sizeof (FDD_SEEK_CMD); Index++) {\r | |
593 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
594 | return EFI_DEVICE_ERROR;\r | |
595 | }\r | |
596 | }\r | |
597 | //\r | |
598 | // Io delay\r | |
599 | //\r | |
600 | MicroSecondDelay (100);\r | |
601 | \r | |
602 | //\r | |
603 | // Calculate waiting time\r | |
604 | //\r | |
605 | if (FdcDev->PresentCylinderNumber > Cylinder) {\r | |
606 | DelayTime = (UINT8) (FdcDev->PresentCylinderNumber - Cylinder);\r | |
607 | } else {\r | |
608 | DelayTime = (UINT8) (Cylinder - FdcDev->PresentCylinderNumber);\r | |
609 | }\r | |
610 | \r | |
611 | MicroSecondDelay ((DelayTime + 1) * 4000);\r | |
612 | \r | |
613 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
614 | return EFI_DEVICE_ERROR;\r | |
615 | }\r | |
616 | \r | |
617 | if ((StatusRegister0 & 0xf0) == 0x20) {\r | |
618 | FdcDev->PresentCylinderNumber = Command.NewCylinder;\r | |
619 | return EFI_SUCCESS;\r | |
620 | } else {\r | |
621 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
622 | return EFI_DEVICE_ERROR;\r | |
623 | }\r | |
624 | }\r | |
625 | \r | |
bcd70414 | 626 | /**\r |
627 | Do the Sense Interrupt Status command, this command\r | |
628 | resets the interrupt signal\r | |
629 | \r | |
fdb05fa3 | 630 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r |
bcd70414 | 631 | @param StatusRegister0 UINT8 *: Be used to save Status Register 0 read from FDC\r |
632 | @param PresentCylinderNumber UINT8 *: Be used to save present cylinder number\r | |
633 | read from FDC\r | |
634 | \r | |
635 | @retval EFI_SUCCESS: Execute the Sense Interrupt Status command successfully\r | |
636 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
637 | \r | |
638 | **/\r | |
11f43dfd | 639 | EFI_STATUS\r |
640 | SenseIntStatus (\r | |
641 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
642 | IN OUT UINT8 *StatusRegister0,\r | |
643 | IN OUT UINT8 *PresentCylinderNumber\r | |
644 | )\r | |
11f43dfd | 645 | {\r |
646 | UINT8 command;\r | |
647 | \r | |
648 | command = SENSE_INT_STATUS_CMD;\r | |
649 | if (EFI_ERROR (DataOutByte (FdcDev, &command))) {\r | |
650 | return EFI_DEVICE_ERROR;\r | |
651 | }\r | |
652 | \r | |
653 | if (EFI_ERROR (DataInByte (FdcDev, StatusRegister0))) {\r | |
654 | return EFI_DEVICE_ERROR;\r | |
655 | }\r | |
656 | \r | |
657 | if (EFI_ERROR (DataInByte (FdcDev, PresentCylinderNumber))) {\r | |
658 | return EFI_DEVICE_ERROR;\r | |
659 | }\r | |
660 | \r | |
661 | return EFI_SUCCESS;\r | |
662 | }\r | |
663 | \r | |
bcd70414 | 664 | /**\r |
665 | Do the Sense Drive Status command\r | |
666 | \r | |
667 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
668 | @param Lba EFI_LBA : Logic block address\r | |
669 | \r | |
670 | @retval EFI_SUCCESS: Execute the Sense Drive Status command successfully\r | |
671 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
672 | @retval EFI_WRITE_PROTECTED:The disk is write protected\r | |
673 | \r | |
674 | **/\r | |
11f43dfd | 675 | EFI_STATUS\r |
676 | SenseDrvStatus (\r | |
677 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
678 | IN EFI_LBA Lba\r | |
679 | )\r | |
11f43dfd | 680 | {\r |
681 | FDD_COMMAND_PACKET2 Command;\r | |
682 | UINT8 Head;\r | |
683 | UINT8 EndOfTrack;\r | |
684 | UINTN Index;\r | |
685 | UINT8 StatusRegister3;\r | |
686 | UINT8 *CommandPointer;\r | |
687 | \r | |
688 | //\r | |
689 | // Sense Drive Status command obtains drive status information,\r | |
690 | // it has not execution phase and goes directly to the result phase from the\r | |
691 | // command phase, Status Register 3 contains the drive status information\r | |
692 | //\r | |
693 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
694 | Command.CommandCode = SENSE_DRV_STATUS_CMD;\r | |
695 | \r | |
696 | if (FdcDev->Disk == FDC_DISK0) {\r | |
697 | Command.DiskHeadSel = 0;\r | |
698 | } else {\r | |
699 | Command.DiskHeadSel = 1;\r | |
700 | }\r | |
701 | \r | |
702 | EndOfTrack = DISK_1440K_EOT;\r | |
703 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
704 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
705 | \r | |
706 | CommandPointer = (UINT8 *) (&Command);\r | |
707 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
708 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
709 | return EFI_DEVICE_ERROR;\r | |
710 | }\r | |
711 | }\r | |
712 | \r | |
713 | if (EFI_ERROR (DataInByte (FdcDev, &StatusRegister3))) {\r | |
714 | return EFI_DEVICE_ERROR;\r | |
715 | }\r | |
716 | //\r | |
717 | // Io delay\r | |
718 | //\r | |
719 | MicroSecondDelay (50);\r | |
720 | \r | |
721 | //\r | |
722 | // Check Status Register 3 to get drive status information\r | |
723 | //\r | |
724 | return CheckStatus3 (StatusRegister3);\r | |
725 | }\r | |
726 | \r | |
bcd70414 | 727 | /**\r |
728 | Update the disk media properties and if necessary\r | |
729 | reinstall Block I/O interface\r | |
730 | \r | |
731 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
732 | \r | |
733 | @retval EFI_SUCCESS: Do the operation successfully\r | |
734 | @retval EFI_DEVICE_ERROR: Fail to the operation\r | |
735 | \r | |
736 | **/\r | |
11f43dfd | 737 | EFI_STATUS\r |
738 | DetectMedia (\r | |
739 | IN FDC_BLK_IO_DEV *FdcDev\r | |
740 | )\r | |
11f43dfd | 741 | {\r |
742 | EFI_STATUS Status;\r | |
743 | BOOLEAN bReset;\r | |
744 | BOOLEAN bReadOnlyLastTime;\r | |
745 | BOOLEAN bMediaPresentLastTime;\r | |
746 | \r | |
747 | bReset = FALSE;\r | |
748 | bReadOnlyLastTime = FdcDev->BlkIo.Media->ReadOnly;\r | |
749 | bMediaPresentLastTime = FdcDev->BlkIo.Media->MediaPresent;\r | |
750 | \r | |
751 | //\r | |
752 | // Check disk change\r | |
753 | //\r | |
754 | Status = DisketChanged (FdcDev);\r | |
ae5852b2 | 755 | \r |
756 | if (Status == EFI_MEDIA_CHANGED) {\r | |
11f43dfd | 757 | FdcDev->BlkIo.Media->MediaId++;\r |
758 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
759 | bReset = TRUE;\r | |
ae5852b2 | 760 | } else if (Status == EFI_NO_MEDIA) {\r |
11f43dfd | 761 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r |
ae5852b2 | 762 | } else if (Status != EFI_SUCCESS) {\r |
11f43dfd | 763 | MotorOff (FdcDev);\r |
764 | return Status;\r | |
765 | //\r | |
766 | // EFI_DEVICE_ERROR\r | |
767 | //\r | |
768 | }\r | |
769 | \r | |
770 | if (FdcDev->BlkIo.Media->MediaPresent) {\r | |
771 | //\r | |
772 | // Check disk write protected\r | |
773 | //\r | |
774 | Status = SenseDrvStatus (FdcDev, 0);\r | |
775 | if (Status == EFI_WRITE_PROTECTED) {\r | |
776 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
777 | } else {\r | |
778 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r | |
779 | }\r | |
780 | }\r | |
781 | \r | |
782 | if (FdcDev->BlkIo.Media->MediaPresent && (bReadOnlyLastTime != FdcDev->BlkIo.Media->ReadOnly)) {\r | |
783 | bReset = TRUE;\r | |
784 | }\r | |
785 | \r | |
786 | if (bMediaPresentLastTime != FdcDev->BlkIo.Media->MediaPresent) {\r | |
787 | bReset = TRUE;\r | |
788 | }\r | |
789 | \r | |
790 | if (bReset) {\r | |
791 | Status = gBS->ReinstallProtocolInterface (\r | |
792 | FdcDev->Handle,\r | |
793 | &gEfiBlockIoProtocolGuid,\r | |
794 | &FdcDev->BlkIo,\r | |
795 | &FdcDev->BlkIo\r | |
796 | );\r | |
797 | \r | |
798 | if (EFI_ERROR (Status)) {\r | |
799 | return Status;\r | |
800 | }\r | |
801 | }\r | |
802 | \r | |
803 | return EFI_SUCCESS;\r | |
804 | }\r | |
805 | \r | |
bcd70414 | 806 | /**\r |
807 | Set the data rate and so on\r | |
808 | \r | |
809 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
810 | \r | |
811 | @retval EFI_SUCCESS success to set the data rate\r | |
812 | **/\r | |
11f43dfd | 813 | EFI_STATUS\r |
814 | Setup (\r | |
815 | IN FDC_BLK_IO_DEV *FdcDev\r | |
816 | )\r | |
11f43dfd | 817 | {\r |
818 | EFI_STATUS Status;\r | |
819 | \r | |
820 | //\r | |
821 | // Set data rate 500kbs\r | |
822 | //\r | |
823 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
824 | \r | |
825 | //\r | |
826 | // Io delay\r | |
827 | //\r | |
828 | MicroSecondDelay (50);\r | |
829 | \r | |
830 | Status = Specify (FdcDev);\r | |
831 | \r | |
832 | if (EFI_ERROR (Status)) {\r | |
833 | return EFI_DEVICE_ERROR;\r | |
834 | }\r | |
835 | \r | |
836 | return EFI_SUCCESS;\r | |
837 | }\r | |
838 | \r | |
bcd70414 | 839 | /**\r |
840 | Read or Write a number of blocks in the same cylinder\r | |
841 | \r | |
842 | @param FdcDev A pointer to Data Structure FDC_BLK_IO_DEV\r | |
843 | @param HostAddress device address \r | |
844 | @param Lba The starting logic block address to read from on the device\r | |
845 | @param NumberOfBlocks The number of block wanted to be read or write\r | |
846 | @param Read Operation type: read or write\r | |
847 | \r | |
848 | @retval EFI_SUCCESS Success operate\r | |
849 | \r | |
850 | **/\r | |
11f43dfd | 851 | EFI_STATUS\r |
852 | ReadWriteDataSector (\r | |
853 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
854 | IN VOID *HostAddress,\r | |
855 | IN EFI_LBA Lba,\r | |
856 | IN UINTN NumberOfBlocks,\r | |
857 | IN BOOLEAN Read\r | |
858 | )\r | |
11f43dfd | 859 | {\r |
860 | EFI_STATUS Status;\r | |
861 | FDD_COMMAND_PACKET1 Command;\r | |
862 | FDD_RESULT_PACKET Result;\r | |
863 | UINTN Index;\r | |
864 | UINTN Times;\r | |
865 | UINT8 *CommandPointer;\r | |
866 | \r | |
867 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
868 | EFI_ISA_IO_PROTOCOL *IsaIo;\r | |
869 | UINTN NumberofBytes;\r | |
870 | VOID *Mapping;\r | |
871 | EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r | |
872 | EFI_STATUS Status1;\r | |
873 | UINT8 Channel;\r | |
874 | EFI_ISA_ACPI_RESOURCE *ResourceItem;\r | |
875 | UINT32 Attribute;\r | |
876 | \r | |
877 | Status = Seek (FdcDev, Lba);\r | |
878 | if (EFI_ERROR (Status)) {\r | |
879 | return EFI_DEVICE_ERROR;\r | |
880 | }\r | |
881 | //\r | |
882 | // Map Dma\r | |
883 | //\r | |
884 | IsaIo = FdcDev->IsaIo;\r | |
885 | NumberofBytes = NumberOfBlocks * 512;\r | |
886 | if (Read == READ) {\r | |
887 | Operation = EfiIsaIoOperationSlaveWrite;\r | |
888 | } else {\r | |
889 | Operation = EfiIsaIoOperationSlaveRead;\r | |
890 | }\r | |
891 | \r | |
892 | ResourceItem = IsaIo->ResourceList->ResourceItem;\r | |
893 | Index = 0;\r | |
894 | while (ResourceItem[Index].Type != EfiIsaAcpiResourceEndOfList) {\r | |
895 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceDma) {\r | |
896 | break;\r | |
897 | }\r | |
898 | \r | |
899 | Index++;\r | |
900 | }\r | |
901 | \r | |
902 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceEndOfList) {\r | |
903 | return EFI_DEVICE_ERROR;\r | |
904 | }\r | |
905 | \r | |
906 | Channel = (UINT8) IsaIo->ResourceList->ResourceItem[Index].StartRange;\r | |
907 | Attribute = IsaIo->ResourceList->ResourceItem[Index].Attribute;\r | |
908 | \r | |
909 | Status1 = IsaIo->Map (\r | |
910 | IsaIo,\r | |
911 | Operation,\r | |
912 | Channel,\r | |
913 | Attribute,\r | |
914 | HostAddress,\r | |
915 | &NumberofBytes,\r | |
916 | &DeviceAddress,\r | |
917 | &Mapping\r | |
918 | );\r | |
919 | if (EFI_ERROR (Status1)) {\r | |
920 | return Status1;\r | |
921 | }\r | |
922 | \r | |
923 | //\r | |
924 | // Allocate Read or Write command packet\r | |
925 | //\r | |
926 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET1));\r | |
927 | if (Read == READ) {\r | |
928 | Command.CommandCode = READ_DATA_CMD | CMD_MT | CMD_MFM | CMD_SK;\r | |
929 | } else {\r | |
930 | Command.CommandCode = WRITE_DATA_CMD | CMD_MT | CMD_MFM;\r | |
931 | }\r | |
932 | \r | |
933 | FillPara (FdcDev, Lba, &Command);\r | |
934 | \r | |
935 | //\r | |
936 | // Write command bytes to FDC\r | |
937 | //\r | |
938 | CommandPointer = (UINT8 *) (&Command);\r | |
939 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET1); Index++) {\r | |
940 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
941 | return EFI_DEVICE_ERROR;\r | |
942 | }\r | |
943 | }\r | |
944 | //\r | |
945 | // wait for some time\r | |
946 | //\r | |
947 | Times = (STALL_1_SECOND / 50) + 1;\r | |
948 | do {\r | |
949 | if ((FdcReadPort (FdcDev, FDC_REGISTER_MSR) & 0xc0) == 0xc0) {\r | |
950 | break;\r | |
951 | }\r | |
952 | \r | |
953 | MicroSecondDelay (50);\r | |
954 | Times = Times - 1;\r | |
955 | } while (Times);\r | |
956 | \r | |
957 | if (Times == 0) {\r | |
958 | return EFI_TIMEOUT;\r | |
959 | }\r | |
960 | //\r | |
961 | // Read result bytes from FDC\r | |
962 | //\r | |
963 | CommandPointer = (UINT8 *) (&Result);\r | |
964 | for (Index = 0; Index < sizeof (FDD_RESULT_PACKET); Index++) {\r | |
965 | if (EFI_ERROR (DataInByte (FdcDev, CommandPointer++))) {\r | |
966 | return EFI_DEVICE_ERROR;\r | |
967 | }\r | |
968 | }\r | |
969 | //\r | |
970 | // Flush before Unmap\r | |
971 | //\r | |
972 | if (Read == READ) {\r | |
973 | Status1 = IsaIo->Flush (IsaIo);\r | |
974 | if (EFI_ERROR (Status1)) {\r | |
975 | return Status1;\r | |
976 | }\r | |
977 | }\r | |
978 | //\r | |
979 | // Unmap Dma\r | |
980 | //\r | |
981 | Status1 = IsaIo->Unmap (IsaIo, Mapping);\r | |
982 | if (EFI_ERROR (Status1)) {\r | |
983 | return Status1;\r | |
984 | }\r | |
985 | \r | |
986 | return CheckResult (&Result, FdcDev);\r | |
987 | }\r | |
988 | \r | |
bcd70414 | 989 | /**\r |
990 | Fill in FDD command's parameter\r | |
991 | \r | |
992 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
993 | @param Lba The starting logic block address to read from on the device\r | |
994 | @param Command FDD command\r | |
995 | \r | |
996 | **/\r | |
11f43dfd | 997 | VOID\r |
998 | FillPara (\r | |
999 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1000 | IN EFI_LBA Lba,\r | |
1001 | IN FDD_COMMAND_PACKET1 *Command\r | |
1002 | )\r | |
11f43dfd | 1003 | {\r |
1004 | UINT8 EndOfTrack;\r | |
1005 | \r | |
1006 | //\r | |
1007 | // Get EndOfTrack from the Para table\r | |
1008 | //\r | |
1009 | EndOfTrack = DISK_1440K_EOT;\r | |
1010 | \r | |
1011 | //\r | |
1012 | // Fill the command parameter\r | |
1013 | //\r | |
1014 | if (FdcDev->Disk == FDC_DISK0) {\r | |
1015 | Command->DiskHeadSel = 0;\r | |
1016 | } else {\r | |
1017 | Command->DiskHeadSel = 1;\r | |
1018 | }\r | |
1019 | \r | |
1020 | Command->Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
1021 | Command->Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
1022 | Command->Sector = (UINT8) ((UINT8) ((UINTN) Lba % EndOfTrack) + 1);\r | |
1023 | Command->DiskHeadSel = (UINT8) (Command->DiskHeadSel | (Command->Head << 2));\r | |
1024 | Command->Number = DISK_1440K_NUMBER;\r | |
1025 | Command->EndOfTrack = DISK_1440K_EOT;\r | |
1026 | Command->GapLength = DISK_1440K_GPL;\r | |
1027 | Command->DataLength = DISK_1440K_DTL;\r | |
1028 | }\r | |
1029 | \r | |
bcd70414 | 1030 | /**\r |
1031 | Read result byte from Data Register of FDC\r | |
1032 | \r | |
1033 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
1034 | @param Pointer UINT8 *: Be used to save result byte read from FDC\r | |
1035 | \r | |
1036 | \r | |
1037 | @retval EFI_SUCCESS: Read result byte from FDC successfully\r | |
1038 | @retval EFI_DEVICE_ERROR: The FDC is not ready to be read\r | |
1039 | \r | |
1040 | **/\r | |
11f43dfd | 1041 | EFI_STATUS\r |
1042 | DataInByte (\r | |
1043 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1044 | IN OUT UINT8 *Pointer\r | |
1045 | )\r | |
11f43dfd | 1046 | {\r |
1047 | UINT8 data;\r | |
1048 | \r | |
1049 | //\r | |
1050 | // wait for 1ms and detect the FDC is ready to be read\r | |
1051 | //\r | |
1052 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_IN, 1))) {\r | |
1053 | return EFI_DEVICE_ERROR;\r | |
1054 | //\r | |
1055 | // is not ready\r | |
1056 | //\r | |
1057 | }\r | |
1058 | \r | |
1059 | data = FdcReadPort (FdcDev, FDC_REGISTER_DTR);\r | |
1060 | \r | |
1061 | //\r | |
1062 | // Io delay\r | |
1063 | //\r | |
1064 | MicroSecondDelay (50);\r | |
1065 | \r | |
1066 | *Pointer = data;\r | |
1067 | return EFI_SUCCESS;\r | |
1068 | }\r | |
1069 | \r | |
bcd70414 | 1070 | /**\r |
1071 | Write command byte to Data Register of FDC\r | |
1072 | \r | |
1073 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
1074 | @param Pointer Be used to save command byte written to FDC\r | |
1075 | \r | |
1076 | @retval EFI_SUCCESS: Write command byte to FDC successfully\r | |
1077 | @retval EFI_DEVICE_ERROR: The FDC is not ready to be written\r | |
1078 | \r | |
1079 | **/\r | |
11f43dfd | 1080 | EFI_STATUS\r |
1081 | DataOutByte (\r | |
1082 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1083 | IN UINT8 *Pointer\r | |
1084 | )\r | |
11f43dfd | 1085 | {\r |
1086 | UINT8 data;\r | |
1087 | \r | |
1088 | //\r | |
1089 | // wait for 1ms and detect the FDC is ready to be written\r | |
1090 | //\r | |
1091 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_OUT, 1))) {\r | |
1092 | return EFI_DEVICE_ERROR;\r | |
1093 | //\r | |
1094 | // is not ready\r | |
1095 | //\r | |
1096 | }\r | |
1097 | \r | |
1098 | data = *Pointer;\r | |
1099 | \r | |
1100 | FdcWritePort (FdcDev, FDC_REGISTER_DTR, data);\r | |
1101 | \r | |
1102 | //\r | |
1103 | // Io delay\r | |
1104 | //\r | |
1105 | MicroSecondDelay (50);\r | |
1106 | \r | |
1107 | return EFI_SUCCESS;\r | |
1108 | }\r | |
1109 | \r | |
bcd70414 | 1110 | /**\r |
1111 | Detect the specified floppy logic drive is busy or\r | |
1112 | not within a period of time\r | |
1113 | \r | |
fdb05fa3 | 1114 | @param FdcDev Indicate it is drive A or drive B\r |
bcd70414 | 1115 | @param TimeoutInSeconds the time period for waiting\r |
1116 | \r | |
1117 | @retval EFI_SUCCESS: The drive and command are not busy\r | |
1118 | @retval EFI_TIMEOUT: The drive or command is still busy after a period time that\r | |
1119 | set by TimeoutInSeconds\r | |
1120 | \r | |
1121 | **/\r | |
11f43dfd | 1122 | EFI_STATUS\r |
1123 | FddWaitForBSYClear (\r | |
1124 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1125 | IN UINTN TimeoutInSeconds\r | |
1126 | )\r | |
11f43dfd | 1127 | {\r |
1128 | UINTN Delay;\r | |
1129 | UINT8 StatusRegister;\r | |
1130 | UINT8 Mask;\r | |
1131 | \r | |
1132 | //\r | |
1133 | // How to determine drive and command are busy or not: by the bits of\r | |
1134 | // Main Status Register\r | |
1135 | // bit0: Drive 0 busy (drive A)\r | |
1136 | // bit1: Drive 1 busy (drive B)\r | |
1137 | // bit4: Command busy\r | |
1138 | //\r | |
1139 | //\r | |
1140 | // set mask: for drive A set bit0 & bit4; for drive B set bit1 & bit4\r | |
1141 | //\r | |
1142 | Mask = (UINT8) ((FdcDev->Disk == FDC_DISK0 ? MSR_DAB : MSR_DBB) | MSR_CB);\r | |
1143 | \r | |
1144 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1145 | do {\r | |
1146 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1147 | if ((StatusRegister & Mask) == 0x00) {\r | |
1148 | break;\r | |
1149 | //\r | |
1150 | // not busy\r | |
1151 | //\r | |
1152 | }\r | |
1153 | \r | |
1154 | MicroSecondDelay (50);\r | |
1155 | Delay = Delay - 1;\r | |
1156 | } while (Delay);\r | |
1157 | \r | |
1158 | if (Delay == 0) {\r | |
1159 | return EFI_TIMEOUT;\r | |
1160 | }\r | |
1161 | \r | |
1162 | return EFI_SUCCESS;\r | |
1163 | }\r | |
1164 | \r | |
bcd70414 | 1165 | /**\r |
1166 | \r | |
1167 | Routine Description: Determine whether FDC is ready to write or read\r | |
1168 | \r | |
1169 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
1170 | @param Dio BOOLEAN: Indicate the FDC is waiting to write or read\r | |
1171 | @param TimeoutInSeconds UINTN: The time period for waiting\r | |
1172 | \r | |
1173 | @retval EFI_SUCCESS: FDC is ready to write or read\r | |
1174 | @retval EFI_NOT_READY: FDC is not ready within the specified time period\r | |
1175 | \r | |
1176 | **/\r | |
11f43dfd | 1177 | EFI_STATUS\r |
1178 | FddDRQReady (\r | |
1179 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1180 | IN BOOLEAN Dio,\r | |
1181 | IN UINTN TimeoutInSeconds\r | |
1182 | )\r | |
11f43dfd | 1183 | {\r |
1184 | UINTN Delay;\r | |
1185 | UINT8 StatusRegister;\r | |
1186 | UINT8 DataInOut;\r | |
1187 | \r | |
1188 | //\r | |
1189 | // Before writing to FDC or reading from FDC, the Host must examine\r | |
1190 | // the bit7(RQM) and bit6(DIO) of the Main Status Register.\r | |
1191 | // That is to say:\r | |
1192 | // command bytes can not be written to Data Register\r | |
1193 | // unless RQM is 1 and DIO is 0\r | |
1194 | // result bytes can not be read from Data Register\r | |
1195 | // unless RQM is 1 and DIO is 1\r | |
1196 | //\r | |
1197 | DataInOut = (UINT8) (Dio << 6);\r | |
1198 | //\r | |
1199 | // in order to compare bit6\r | |
1200 | //\r | |
1201 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1202 | do {\r | |
1203 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1204 | if ((StatusRegister & MSR_RQM) == MSR_RQM && (StatusRegister & MSR_DIO) == DataInOut) {\r | |
1205 | break;\r | |
1206 | //\r | |
1207 | // FDC is ready\r | |
1208 | //\r | |
1209 | }\r | |
1210 | \r | |
1211 | MicroSecondDelay (50);\r | |
1212 | //\r | |
1213 | // Stall for 50 us\r | |
1214 | //\r | |
1215 | Delay = Delay - 1;\r | |
1216 | } while (Delay);\r | |
1217 | \r | |
1218 | if (Delay == 0) {\r | |
1219 | return EFI_NOT_READY;\r | |
1220 | //\r | |
1221 | // FDC is not ready within the specified time period\r | |
1222 | //\r | |
1223 | }\r | |
1224 | \r | |
1225 | return EFI_SUCCESS;\r | |
1226 | }\r | |
1227 | \r | |
bcd70414 | 1228 | /**\r |
1229 | Set FDC control structure's attribute according to\r | |
1230 | result \r | |
1231 | \r | |
1232 | @param Result Point to result structure\r | |
1233 | @param FdcDev FDC control structure\r | |
1234 | \r | |
fdb05fa3 | 1235 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r |
1236 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1237 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1238 | @retval EFI_SUCCESS - GC_TODO: Add description for return value\r | |
bcd70414 | 1239 | \r |
1240 | **/\r | |
11f43dfd | 1241 | EFI_STATUS\r |
1242 | CheckResult (\r | |
1243 | IN FDD_RESULT_PACKET *Result,\r | |
1244 | IN OUT FDC_BLK_IO_DEV *FdcDev\r | |
1245 | )\r | |
11f43dfd | 1246 | {\r |
1247 | //\r | |
1248 | // Check Status Register0\r | |
1249 | //\r | |
1250 | if ((Result->Status0 & STS0_IC) != IC_NT) {\r | |
1251 | if ((Result->Status0 & STS0_SE) == 0x20) {\r | |
1252 | //\r | |
1253 | // seek error\r | |
1254 | //\r | |
1255 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1256 | }\r | |
1257 | \r | |
1258 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1259 | return EFI_DEVICE_ERROR;\r | |
1260 | }\r | |
1261 | //\r | |
1262 | // Check Status Register1\r | |
1263 | //\r | |
1264 | if (Result->Status1 & (STS1_EN | STS1_DE | STS1_OR | STS1_ND | STS1_NW | STS1_MA)) {\r | |
1265 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1266 | return EFI_DEVICE_ERROR;\r | |
1267 | }\r | |
1268 | //\r | |
1269 | // Check Status Register2\r | |
1270 | //\r | |
1271 | if (Result->Status2 & (STS2_CM | STS2_DD | STS2_WC | STS2_BC | STS2_MD)) {\r | |
1272 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1273 | return EFI_DEVICE_ERROR;\r | |
1274 | }\r | |
1275 | \r | |
1276 | return EFI_SUCCESS;\r | |
1277 | }\r | |
1278 | \r | |
bcd70414 | 1279 | /**\r |
1280 | Check the drive status information\r | |
1281 | \r | |
1282 | @param StatusRegister3 the value of Status Register 3\r | |
1283 | \r | |
1284 | @retval EFI_SUCCESS The disk is not write protected\r | |
1285 | @retval EFI_WRITE_PROTECTED: The disk is write protected\r | |
1286 | \r | |
1287 | **/\r | |
11f43dfd | 1288 | EFI_STATUS\r |
1289 | CheckStatus3 (\r | |
1290 | IN UINT8 StatusRegister3\r | |
1291 | )\r | |
11f43dfd | 1292 | {\r |
1293 | if (StatusRegister3 & STS3_WP) {\r | |
1294 | return EFI_WRITE_PROTECTED;\r | |
1295 | }\r | |
1296 | \r | |
1297 | return EFI_SUCCESS;\r | |
1298 | }\r | |
1299 | \r | |
bcd70414 | 1300 | /**\r |
1301 | Calculate the number of block in the same cylinder\r | |
1302 | according to LBA\r | |
1303 | \r | |
1304 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
1305 | @param LBA EFI_LBA: The starting logic block address\r | |
1306 | @param NumberOfBlocks UINTN: The number of blocks\r | |
1307 | \r | |
1308 | @return The number of blocks in the same cylinder which the starting\r | |
1309 | logic block address is LBA\r | |
1310 | \r | |
1311 | **/\r | |
11f43dfd | 1312 | UINTN\r |
1313 | GetTransferBlockCount (\r | |
1314 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1315 | IN EFI_LBA LBA,\r | |
1316 | IN UINTN NumberOfBlocks\r | |
1317 | )\r | |
11f43dfd | 1318 | {\r |
1319 | UINT8 EndOfTrack;\r | |
1320 | UINT8 Head;\r | |
1321 | UINT8 SectorsInTrack;\r | |
1322 | \r | |
1323 | //\r | |
1324 | // Calculate the number of block in the same cylinder\r | |
1325 | //\r | |
1326 | EndOfTrack = DISK_1440K_EOT;\r | |
1327 | Head = (UINT8) ((UINTN) LBA / EndOfTrack % 2);\r | |
1328 | \r | |
1329 | SectorsInTrack = (UINT8) (EndOfTrack * (2 - Head) - (UINT8) ((UINTN) LBA % EndOfTrack));\r | |
1330 | if (SectorsInTrack < NumberOfBlocks) {\r | |
1331 | return SectorsInTrack;\r | |
1332 | } else {\r | |
1333 | return NumberOfBlocks;\r | |
1334 | }\r | |
1335 | }\r | |
1336 | \r | |
bcd70414 | 1337 | /**\r |
1338 | When the Timer(2s) off, turn the drive's motor off\r | |
1339 | \r | |
1340 | @param Event EFI_EVENT: Event(the timer) whose notification function is being\r | |
1341 | invoked\r | |
1342 | @param Context VOID *: Pointer to the notification function's context\r | |
1343 | \r | |
1344 | **/\r | |
11f43dfd | 1345 | VOID\r |
1346 | EFIAPI\r | |
1347 | FddTimerProc (\r | |
1348 | IN EFI_EVENT Event,\r | |
1349 | IN VOID *Context\r | |
1350 | )\r | |
11f43dfd | 1351 | {\r |
1352 | FDC_BLK_IO_DEV *FdcDev;\r | |
1353 | UINT8 data;\r | |
1354 | \r | |
1355 | FdcDev = (FDC_BLK_IO_DEV *) Context;\r | |
1356 | \r | |
1357 | //\r | |
1358 | // Get the motor status\r | |
1359 | //\r | |
1360 | data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r | |
1361 | \r | |
1362 | if (((FdcDev->Disk == FDC_DISK0) && ((data & 0x10) != 0x10)) ||\r | |
1363 | ((FdcDev->Disk == FDC_DISK1) && ((data & 0x21) != 0x21))\r | |
1364 | ) {\r | |
1365 | return ;\r | |
1366 | }\r | |
1367 | //\r | |
1368 | // the motor is on, so need motor off\r | |
1369 | //\r | |
1370 | data = 0x0C;\r | |
1371 | data = (UINT8) (data | (SELECT_DRV & FdcDev->Disk));\r | |
1372 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, data);\r | |
1373 | MicroSecondDelay (500);\r | |
1374 | }\r | |
1375 | \r | |
bcd70414 | 1376 | /**\r |
1377 | Read I/O port for FDC\r | |
1378 | \r | |
1379 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
1380 | @param Offset The offset address of port\r | |
1381 | \r | |
1382 | **/\r | |
11f43dfd | 1383 | UINT8\r |
1384 | FdcReadPort (\r | |
1385 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1386 | IN UINT32 Offset\r | |
1387 | )\r | |
11f43dfd | 1388 | {\r |
1389 | UINT8 Data;\r | |
1390 | \r | |
1391 | //\r | |
1392 | // Call IsaIo\r | |
1393 | //\r | |
1394 | FdcDev->IsaIo->Io.Read (\r | |
1395 | FdcDev->IsaIo,\r | |
1396 | EfiIsaIoWidthUint8,\r | |
1397 | FdcDev->BaseAddress + Offset,\r | |
1398 | 1,\r | |
1399 | &Data\r | |
1400 | );\r | |
1401 | \r | |
1402 | return Data;\r | |
1403 | }\r | |
1404 | \r | |
bcd70414 | 1405 | /**\r |
1406 | Write I/O port for FDC\r | |
1407 | \r | |
1408 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV\r | |
1409 | @param Offset The offset address of port\r | |
fdb05fa3 | 1410 | @param Data Value written to port\r |
1411 | \r | |
bcd70414 | 1412 | **/\r |
11f43dfd | 1413 | VOID\r |
1414 | FdcWritePort (\r | |
1415 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1416 | IN UINT32 Offset,\r | |
1417 | IN UINT8 Data\r | |
1418 | )\r | |
11f43dfd | 1419 | {\r |
1420 | \r | |
1421 | //\r | |
1422 | // Call IsaIo\r | |
1423 | //\r | |
1424 | FdcDev->IsaIo->Io.Write (\r | |
1425 | FdcDev->IsaIo,\r | |
1426 | EfiIsaIoWidthUint8,\r | |
1427 | FdcDev->BaseAddress + Offset,\r | |
1428 | 1,\r | |
1429 | &Data\r | |
1430 | );\r | |
1431 | }\r | |
bcd70414 | 1432 | \r |