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d6321d6e | 1 | /** @file\r |
2 | Internal floppy disk controller programming functions for the floppy driver.\r | |
f8cd287b | 3 | \r |
d6321d6e | 4 | Copyright (c) 2006 - 2009, Intel Corporation.<BR>\r |
f8cd287b | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
11f43dfd | 9 | \r |
f8cd287b | 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11f43dfd | 12 | \r |
f8cd287b | 13 | **/\r |
11f43dfd | 14 | \r |
15 | #include "IsaFloppy.h"\r | |
16 | \r | |
bcd70414 | 17 | /**\r |
d6321d6e | 18 | Detect whether a floppy drive is present or not.\r |
bcd70414 | 19 | \r |
d6321d6e | 20 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 21 | \r |
d6321d6e | 22 | @retval EFI_SUCCESS The floppy disk drive is present\r |
23 | @retval EFI_NOT_FOUND The floppy disk drive is not present\r | |
bcd70414 | 24 | **/\r |
11f43dfd | 25 | EFI_STATUS\r |
26 | DiscoverFddDevice (\r | |
27 | IN FDC_BLK_IO_DEV *FdcDev\r | |
28 | )\r | |
11f43dfd | 29 | {\r |
30 | EFI_STATUS Status;\r | |
31 | \r | |
32 | FdcDev->BlkIo.Media = &FdcDev->BlkMedia;\r | |
33 | \r | |
11f43dfd | 34 | Status = FddIdentify (FdcDev);\r |
35 | if (EFI_ERROR (Status)) {\r | |
36 | return EFI_NOT_FOUND;\r | |
37 | }\r | |
38 | \r | |
39 | FdcDev->BlkIo.Reset = FdcReset;\r | |
40 | FdcDev->BlkIo.FlushBlocks = FddFlushBlocks;\r | |
41 | FdcDev->BlkIo.ReadBlocks = FddReadBlocks;\r | |
42 | FdcDev->BlkIo.WriteBlocks = FddWriteBlocks;\r | |
43 | FdcDev->BlkMedia.LogicalPartition = FALSE;\r | |
44 | FdcDev->BlkMedia.WriteCaching = FALSE;\r | |
45 | \r | |
46 | return EFI_SUCCESS;\r | |
47 | }\r | |
48 | \r | |
bcd70414 | 49 | /**\r |
d6321d6e | 50 | Do recalibrate and check if the drive is present or not\r |
51 | and set the media parameters if the driver is present.\r | |
bcd70414 | 52 | \r |
d6321d6e | 53 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 54 | \r |
d6321d6e | 55 | @retval EFI_SUCCESS The floppy disk drive is present\r |
56 | @retval EFI_DEVICE_ERROR The floppy disk drive is not present\r | |
bcd70414 | 57 | **/\r |
11f43dfd | 58 | EFI_STATUS\r |
59 | FddIdentify (\r | |
60 | IN FDC_BLK_IO_DEV *FdcDev\r | |
61 | )\r | |
11f43dfd | 62 | {\r |
63 | EFI_STATUS Status;\r | |
64 | \r | |
65 | //\r | |
66 | // Set Floppy Disk Controller's motor on\r | |
67 | //\r | |
68 | Status = MotorOn (FdcDev);\r | |
69 | if (EFI_ERROR (Status)) {\r | |
70 | return EFI_DEVICE_ERROR;\r | |
71 | }\r | |
72 | \r | |
73 | Status = Recalibrate (FdcDev);\r | |
74 | \r | |
75 | if (EFI_ERROR (Status)) {\r | |
76 | MotorOff (FdcDev);\r | |
77 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
78 | return EFI_DEVICE_ERROR;\r | |
79 | }\r | |
80 | //\r | |
81 | // Set Media Parameter\r | |
82 | //\r | |
83 | FdcDev->BlkIo.Media->RemovableMedia = TRUE;\r | |
84 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
11f43dfd | 85 | FdcDev->BlkIo.Media->MediaId = 0;\r |
86 | \r | |
87 | //\r | |
88 | // Check Media\r | |
89 | //\r | |
90 | Status = DisketChanged (FdcDev);\r | |
11f43dfd | 91 | \r |
ae5852b2 | 92 | if (Status == EFI_NO_MEDIA) {\r |
93 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r | |
179a2e97 | 94 | } else if ((Status != EFI_MEDIA_CHANGED) &&\r |
95 | (Status != EFI_SUCCESS)) {\r | |
11f43dfd | 96 | MotorOff (FdcDev);\r |
97 | return Status;\r | |
98 | }\r | |
ae5852b2 | 99 | \r |
11f43dfd | 100 | //\r |
101 | // Check Disk Write Protected\r | |
102 | //\r | |
103 | Status = SenseDrvStatus (FdcDev, 0);\r | |
11f43dfd | 104 | \r |
ae5852b2 | 105 | if (Status == EFI_WRITE_PROTECTED) {\r |
106 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
107 | } else if (Status == EFI_SUCCESS) {\r | |
11f43dfd | 108 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r |
ae5852b2 | 109 | } else {\r |
11f43dfd | 110 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 111 | }\r |
112 | \r | |
113 | MotorOff (FdcDev);\r | |
114 | \r | |
115 | //\r | |
116 | // Set Media Default Type\r | |
117 | //\r | |
118 | FdcDev->BlkIo.Media->BlockSize = DISK_1440K_BYTEPERSECTOR;\r | |
119 | FdcDev->BlkIo.Media->LastBlock = DISK_1440K_EOT * 2 * (DISK_1440K_MAXTRACKNUM + 1) - 1;\r | |
120 | \r | |
121 | return EFI_SUCCESS;\r | |
122 | }\r | |
123 | \r | |
bcd70414 | 124 | /**\r |
d6321d6e | 125 | Reset the Floppy Logic Drive.\r |
bcd70414 | 126 | \r |
d6321d6e | 127 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 128 | \r |
129 | @retval EFI_SUCCESS: The Floppy Logic Drive is reset\r | |
130 | @retval EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly and\r | |
131 | can not be reset\r | |
132 | \r | |
133 | **/\r | |
11f43dfd | 134 | EFI_STATUS\r |
135 | FddReset (\r | |
136 | IN FDC_BLK_IO_DEV *FdcDev\r | |
137 | )\r | |
11f43dfd | 138 | {\r |
d6321d6e | 139 | UINT8 Data;\r |
11f43dfd | 140 | UINT8 StatusRegister0;\r |
141 | UINT8 PresentCylinderNumber;\r | |
142 | UINTN Index;\r | |
143 | \r | |
144 | //\r | |
145 | // Report reset progress code\r | |
146 | //\r | |
147 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
148 | EFI_PROGRESS_CODE,\r | |
149 | EFI_PERIPHERAL_REMOVABLE_MEDIA | EFI_P_PC_RESET,\r | |
150 | FdcDev->DevicePath\r | |
151 | );\r | |
152 | \r | |
153 | //\r | |
154 | // Reset specified Floppy Logic Drive according to FdcDev -> Disk\r | |
155 | // Set Digital Output Register(DOR) to do reset work\r | |
156 | // bit0 & bit1 of DOR : Drive Select\r | |
157 | // bit2 : Reset bit\r | |
158 | // bit3 : DMA and Int bit\r | |
159 | // Reset : a "0" written to bit2 resets the FDC, this reset will remain\r | |
160 | // active until\r | |
161 | // a "1" is written to this bit.\r | |
162 | // Reset step 1:\r | |
163 | // use bit0 & bit1 to select the logic drive\r | |
164 | // write "0" to bit2\r | |
165 | //\r | |
d6321d6e | 166 | Data = 0x0;\r |
167 | Data = (UINT8) (Data | (SELECT_DRV & FdcDev->Disk));\r | |
168 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 169 | \r |
170 | //\r | |
171 | // wait some time,at least 120us\r | |
172 | //\r | |
173 | MicroSecondDelay (500);\r | |
174 | \r | |
175 | //\r | |
176 | // Reset step 2:\r | |
177 | // write "1" to bit2\r | |
178 | // write "1" to bit3 : enable DMA\r | |
179 | //\r | |
d6321d6e | 180 | Data |= 0x0C;\r |
181 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 182 | \r |
183 | //\r | |
184 | // Experience value\r | |
185 | //\r | |
186 | MicroSecondDelay (2000);\r | |
187 | \r | |
188 | //\r | |
189 | // wait specified floppy logic drive is not busy\r | |
190 | //\r | |
191 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
192 | return EFI_DEVICE_ERROR;\r | |
193 | }\r | |
194 | //\r | |
195 | // Set the Transfer Data Rate\r | |
196 | //\r | |
197 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
198 | \r | |
199 | //\r | |
200 | // Experience value\r | |
201 | //\r | |
202 | MicroSecondDelay (100);\r | |
203 | \r | |
204 | //\r | |
205 | // Issue Sense interrupt command for each drive (total 4 drives)\r | |
206 | //\r | |
207 | for (Index = 0; Index < 4; Index++) {\r | |
208 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
209 | return EFI_DEVICE_ERROR;\r | |
210 | }\r | |
211 | }\r | |
212 | //\r | |
213 | // issue Specify command\r | |
214 | //\r | |
215 | if (EFI_ERROR (Specify (FdcDev))) {\r | |
216 | return EFI_DEVICE_ERROR;\r | |
217 | }\r | |
218 | \r | |
219 | return EFI_SUCCESS;\r | |
220 | }\r | |
221 | \r | |
bcd70414 | 222 | /**\r |
d6321d6e | 223 | Turn the floppy disk drive's motor on.\r |
224 | The drive's motor must be on before any command can be executed.\r | |
bcd70414 | 225 | \r |
d6321d6e | 226 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 227 | \r |
d6321d6e | 228 | @retval EFI_SUCCESS The drive's motor was turned on successfully\r |
229 | @retval EFI_DEVICE_ERROR The drive is busy, so can not turn motor on\r | |
bcd70414 | 230 | **/\r |
11f43dfd | 231 | EFI_STATUS\r |
232 | MotorOn (\r | |
233 | IN FDC_BLK_IO_DEV *FdcDev\r | |
234 | )\r | |
11f43dfd | 235 | {\r |
236 | EFI_STATUS Status;\r | |
d6321d6e | 237 | UINT8 DorData;\r |
11f43dfd | 238 | \r |
239 | //\r | |
240 | // Control of the floppy drive motors is a big pain. If motor is off, you have\r | |
241 | // to turn it on first. But you can not leave the motor on all the time, since\r | |
242 | // that would wear out the disk. On the other hand, if you turn the motor off\r | |
243 | // after each operation, the system performance will be awful. The compromise\r | |
244 | // used in this driver is to leave the motor on for 2 seconds after\r | |
245 | // each operation. If a new operation is started in that interval(2s),\r | |
246 | // the motor need not be turned on again. If no new operation is started,\r | |
247 | // a timer goes off and the motor is turned off\r | |
248 | //\r | |
249 | //\r | |
250 | // Cancel the timer\r | |
251 | //\r | |
252 | Status = gBS->SetTimer (FdcDev->Event, TimerCancel, 0);\r | |
d6321d6e | 253 | ASSERT_EFI_ERROR (Status);\r |
11f43dfd | 254 | \r |
11f43dfd | 255 | //\r |
256 | // Get the motor status\r | |
257 | //\r | |
d6321d6e | 258 | DorData = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r |
11f43dfd | 259 | \r |
d6321d6e | 260 | if (((FdcDev->Disk == FdcDisk0) && ((DorData & 0x10) == 0x10)) ||\r |
261 | ((FdcDev->Disk == FdcDisk1) && ((DorData & 0x21) == 0x21))\r | |
11f43dfd | 262 | ) {\r |
263 | return EFI_SUCCESS;\r | |
264 | }\r | |
265 | //\r | |
266 | // The drive's motor is off, so need turn it on\r | |
267 | // first look at command and drive are busy or not\r | |
268 | //\r | |
269 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
270 | return EFI_DEVICE_ERROR;\r | |
271 | }\r | |
272 | //\r | |
273 | // for drive A: 1CH, drive B: 2DH\r | |
274 | //\r | |
d6321d6e | 275 | DorData = 0x0C;\r |
276 | DorData = (UINT8) (DorData | (SELECT_DRV & FdcDev->Disk));\r | |
277 | if (FdcDev->Disk == FdcDisk0) {\r | |
11f43dfd | 278 | //\r |
279 | // drive A\r | |
280 | //\r | |
d6321d6e | 281 | DorData |= DRVA_MOTOR_ON;\r |
11f43dfd | 282 | } else {\r |
283 | //\r | |
284 | // drive B\r | |
285 | //\r | |
d6321d6e | 286 | DorData |= DRVB_MOTOR_ON;\r |
11f43dfd | 287 | }\r |
288 | \r | |
d6321d6e | 289 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, DorData);\r |
11f43dfd | 290 | \r |
291 | //\r | |
292 | // Experience value\r | |
293 | //\r | |
294 | MicroSecondDelay (4000);\r | |
295 | \r | |
296 | return EFI_SUCCESS;\r | |
297 | }\r | |
298 | \r | |
bcd70414 | 299 | /**\r |
d6321d6e | 300 | Set a Timer and when Timer goes off, turn the motor off.\r |
bcd70414 | 301 | \r |
d6321d6e | 302 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 303 | \r |
d6321d6e | 304 | @retval EFI_SUCCESS Set the Timer successfully\r |
305 | @retval EFI_INVALID_PARAMETER Fail to Set the timer\r | |
bcd70414 | 306 | **/\r |
11f43dfd | 307 | EFI_STATUS\r |
308 | MotorOff (\r | |
309 | IN FDC_BLK_IO_DEV *FdcDev\r | |
310 | )\r | |
11f43dfd | 311 | {\r |
312 | //\r | |
313 | // Set the timer : 2s\r | |
314 | //\r | |
315 | return gBS->SetTimer (FdcDev->Event, TimerRelative, 20000000);\r | |
316 | }\r | |
317 | \r | |
bcd70414 | 318 | /**\r |
d6321d6e | 319 | Detect whether the disk in the drive is changed or not.\r |
bcd70414 | 320 | \r |
d6321d6e | 321 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 322 | \r |
d6321d6e | 323 | @retval EFI_SUCCESS No disk media change\r |
324 | @retval EFI_DEVICE_ERROR Fail to do the recalibrate or seek operation\r | |
325 | @retval EFI_NO_MEDIA No disk in the drive\r | |
326 | @retval EFI_MEDIA_CHANGED There is a new disk in the drive\r | |
bcd70414 | 327 | **/\r |
11f43dfd | 328 | EFI_STATUS\r |
329 | DisketChanged (\r | |
330 | IN FDC_BLK_IO_DEV *FdcDev\r | |
331 | )\r | |
11f43dfd | 332 | {\r |
333 | EFI_STATUS Status;\r | |
d6321d6e | 334 | UINT8 Data;\r |
11f43dfd | 335 | \r |
336 | //\r | |
337 | // Check change line\r | |
338 | //\r | |
d6321d6e | 339 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r |
11f43dfd | 340 | \r |
341 | //\r | |
342 | // Io delay\r | |
343 | //\r | |
344 | MicroSecondDelay (50);\r | |
345 | \r | |
d6321d6e | 346 | if ((Data & DIR_DCL) == 0x80) {\r |
11f43dfd | 347 | //\r |
348 | // disk change line is active\r | |
349 | //\r | |
350 | if (FdcDev->PresentCylinderNumber != 0) {\r | |
351 | Status = Recalibrate (FdcDev);\r | |
352 | } else {\r | |
353 | Status = Seek (FdcDev, 0x30);\r | |
354 | }\r | |
355 | \r | |
356 | if (EFI_ERROR (Status)) {\r | |
357 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
358 | return EFI_DEVICE_ERROR;\r | |
359 | //\r | |
360 | // Fail to do the seek or recalibrate operation\r | |
361 | //\r | |
362 | }\r | |
363 | \r | |
d6321d6e | 364 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r |
11f43dfd | 365 | \r |
366 | //\r | |
367 | // Io delay\r | |
368 | //\r | |
369 | MicroSecondDelay (50);\r | |
370 | \r | |
d6321d6e | 371 | if ((Data & DIR_DCL) == 0x80) {\r |
11f43dfd | 372 | return EFI_NO_MEDIA;\r |
373 | }\r | |
374 | \r | |
375 | return EFI_MEDIA_CHANGED;\r | |
376 | }\r | |
377 | \r | |
378 | return EFI_SUCCESS;\r | |
379 | }\r | |
380 | \r | |
bcd70414 | 381 | /**\r |
382 | Do the Specify command, this command sets DMA operation\r | |
383 | and the initial values for each of the three internal\r | |
d6321d6e | 384 | times: HUT, SRT and HLT.\r |
bcd70414 | 385 | \r |
d6321d6e | 386 | @param[in] FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
bcd70414 | 387 | \r |
d6321d6e | 388 | @retval EFI_SUCCESS Execute the Specify command successfully\r |
389 | @retval EFI_DEVICE_ERROR Fail to execute the command\r | |
bcd70414 | 390 | **/\r |
11f43dfd | 391 | EFI_STATUS\r |
392 | Specify (\r | |
393 | IN FDC_BLK_IO_DEV *FdcDev\r | |
394 | )\r | |
11f43dfd | 395 | {\r |
396 | FDD_SPECIFY_CMD Command;\r | |
397 | UINTN Index;\r | |
398 | UINT8 *CommandPointer;\r | |
399 | \r | |
400 | ZeroMem (&Command, sizeof (FDD_SPECIFY_CMD));\r | |
401 | Command.CommandCode = SPECIFY_CMD;\r | |
402 | //\r | |
403 | // set SRT, HUT\r | |
404 | //\r | |
405 | Command.SrtHut = 0xdf;\r | |
406 | //\r | |
407 | // 0xdf;\r | |
408 | //\r | |
409 | // set HLT and DMA\r | |
410 | //\r | |
411 | Command.HltNd = 0x02;\r | |
412 | \r | |
413 | CommandPointer = (UINT8 *) (&Command);\r | |
414 | for (Index = 0; Index < sizeof (FDD_SPECIFY_CMD); Index++) {\r | |
415 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
416 | return EFI_DEVICE_ERROR;\r | |
417 | }\r | |
418 | }\r | |
419 | \r | |
420 | return EFI_SUCCESS;\r | |
421 | }\r | |
422 | \r | |
bcd70414 | 423 | /**\r |
d6321d6e | 424 | Set the head of floppy drive to track 0.\r |
bcd70414 | 425 | \r |
d6321d6e | 426 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 427 | @retval EFI_SUCCESS: Execute the Recalibrate operation successfully\r |
428 | @retval EFI_DEVICE_ERROR: Fail to execute the Recalibrate operation\r | |
429 | \r | |
430 | **/\r | |
11f43dfd | 431 | EFI_STATUS\r |
432 | Recalibrate (\r | |
433 | IN FDC_BLK_IO_DEV *FdcDev\r | |
434 | )\r | |
11f43dfd | 435 | {\r |
436 | FDD_COMMAND_PACKET2 Command;\r | |
437 | UINTN Index;\r | |
438 | UINT8 StatusRegister0;\r | |
439 | UINT8 PresentCylinderNumber;\r | |
440 | UINT8 *CommandPointer;\r | |
441 | UINT8 Count;\r | |
442 | \r | |
443 | Count = 2;\r | |
444 | \r | |
445 | while (Count > 0) {\r | |
446 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
447 | Command.CommandCode = RECALIBRATE_CMD;\r | |
448 | //\r | |
449 | // drive select\r | |
450 | //\r | |
d6321d6e | 451 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 452 | Command.DiskHeadSel = 0;\r |
453 | //\r | |
454 | // 0\r | |
455 | //\r | |
456 | } else {\r | |
457 | Command.DiskHeadSel = 1;\r | |
458 | //\r | |
459 | // 1\r | |
460 | //\r | |
461 | }\r | |
462 | \r | |
463 | CommandPointer = (UINT8 *) (&Command);\r | |
464 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
465 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
466 | return EFI_DEVICE_ERROR;\r | |
467 | }\r | |
468 | }\r | |
469 | //\r | |
470 | // Experience value\r | |
471 | //\r | |
472 | MicroSecondDelay (250000);\r | |
473 | //\r | |
474 | // need modify according to 1.44M or 2.88M\r | |
475 | //\r | |
476 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
477 | return EFI_DEVICE_ERROR;\r | |
478 | }\r | |
479 | \r | |
480 | if ((StatusRegister0 & 0xf0) == 0x20 && PresentCylinderNumber == 0) {\r | |
481 | FdcDev->PresentCylinderNumber = 0;\r | |
482 | FdcDev->ControllerState->NeedRecalibrate = FALSE;\r | |
483 | return EFI_SUCCESS;\r | |
484 | } else {\r | |
485 | Count--;\r | |
486 | if (Count == 0) {\r | |
487 | return EFI_DEVICE_ERROR;\r | |
488 | }\r | |
489 | }\r | |
490 | }\r | |
491 | //\r | |
492 | // end while\r | |
493 | //\r | |
494 | return EFI_SUCCESS;\r | |
495 | }\r | |
496 | \r | |
bcd70414 | 497 | /**\r |
d6321d6e | 498 | Set the head of floppy drive to the new cylinder.\r |
bcd70414 | 499 | \r |
d6321d6e | 500 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 501 | @param Lba EFI_LBA : The logic block address want to seek\r |
502 | \r | |
503 | @retval EFI_SUCCESS: Execute the Seek operation successfully\r | |
504 | @retval EFI_DEVICE_ERROR: Fail to execute the Seek operation\r | |
505 | \r | |
506 | **/\r | |
11f43dfd | 507 | EFI_STATUS\r |
508 | Seek (\r | |
509 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
510 | IN EFI_LBA Lba\r | |
511 | )\r | |
11f43dfd | 512 | {\r |
513 | FDD_SEEK_CMD Command;\r | |
514 | UINT8 EndOfTrack;\r | |
515 | UINT8 Head;\r | |
516 | UINT8 Cylinder;\r | |
517 | UINT8 StatusRegister0;\r | |
518 | UINT8 *CommandPointer;\r | |
519 | UINT8 PresentCylinderNumber;\r | |
520 | UINTN Index;\r | |
521 | UINT8 DelayTime;\r | |
522 | \r | |
523 | if (FdcDev->ControllerState->NeedRecalibrate) {\r | |
524 | if (EFI_ERROR (Recalibrate (FdcDev))) {\r | |
525 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
526 | return EFI_DEVICE_ERROR;\r | |
527 | }\r | |
528 | }\r | |
529 | \r | |
530 | EndOfTrack = DISK_1440K_EOT;\r | |
531 | //\r | |
532 | // Calculate cylinder based on Lba and EOT\r | |
533 | //\r | |
534 | Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
535 | \r | |
536 | //\r | |
537 | // if the destination cylinder is the present cylinder, unnecessary to do the\r | |
538 | // seek operation\r | |
539 | //\r | |
540 | if (FdcDev->PresentCylinderNumber == Cylinder) {\r | |
541 | return EFI_SUCCESS;\r | |
542 | }\r | |
543 | //\r | |
544 | // Calculate the head : 0 or 1\r | |
545 | //\r | |
546 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
547 | \r | |
548 | ZeroMem (&Command, sizeof (FDD_SEEK_CMD));\r | |
549 | Command.CommandCode = SEEK_CMD;\r | |
d6321d6e | 550 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 551 | Command.DiskHeadSel = 0;\r |
552 | //\r | |
553 | // 0\r | |
554 | //\r | |
555 | } else {\r | |
556 | Command.DiskHeadSel = 1;\r | |
557 | //\r | |
558 | // 1\r | |
559 | //\r | |
560 | }\r | |
561 | \r | |
562 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
563 | Command.NewCylinder = Cylinder;\r | |
564 | \r | |
565 | CommandPointer = (UINT8 *) (&Command);\r | |
566 | for (Index = 0; Index < sizeof (FDD_SEEK_CMD); Index++) {\r | |
567 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
568 | return EFI_DEVICE_ERROR;\r | |
569 | }\r | |
570 | }\r | |
571 | //\r | |
572 | // Io delay\r | |
573 | //\r | |
574 | MicroSecondDelay (100);\r | |
575 | \r | |
576 | //\r | |
577 | // Calculate waiting time\r | |
578 | //\r | |
579 | if (FdcDev->PresentCylinderNumber > Cylinder) {\r | |
580 | DelayTime = (UINT8) (FdcDev->PresentCylinderNumber - Cylinder);\r | |
581 | } else {\r | |
582 | DelayTime = (UINT8) (Cylinder - FdcDev->PresentCylinderNumber);\r | |
583 | }\r | |
584 | \r | |
585 | MicroSecondDelay ((DelayTime + 1) * 4000);\r | |
586 | \r | |
587 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
588 | return EFI_DEVICE_ERROR;\r | |
589 | }\r | |
590 | \r | |
591 | if ((StatusRegister0 & 0xf0) == 0x20) {\r | |
592 | FdcDev->PresentCylinderNumber = Command.NewCylinder;\r | |
593 | return EFI_SUCCESS;\r | |
594 | } else {\r | |
595 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
596 | return EFI_DEVICE_ERROR;\r | |
597 | }\r | |
598 | }\r | |
599 | \r | |
bcd70414 | 600 | /**\r |
601 | Do the Sense Interrupt Status command, this command\r | |
d6321d6e | 602 | resets the interrupt signal.\r |
bcd70414 | 603 | \r |
d6321d6e | 604 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 605 | @param StatusRegister0 UINT8 *: Be used to save Status Register 0 read from FDC\r |
606 | @param PresentCylinderNumber UINT8 *: Be used to save present cylinder number\r | |
607 | read from FDC\r | |
608 | \r | |
609 | @retval EFI_SUCCESS: Execute the Sense Interrupt Status command successfully\r | |
610 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
611 | \r | |
612 | **/\r | |
11f43dfd | 613 | EFI_STATUS\r |
614 | SenseIntStatus (\r | |
615 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
616 | IN OUT UINT8 *StatusRegister0,\r | |
617 | IN OUT UINT8 *PresentCylinderNumber\r | |
618 | )\r | |
11f43dfd | 619 | {\r |
d6321d6e | 620 | UINT8 Command;\r |
11f43dfd | 621 | \r |
d6321d6e | 622 | Command = SENSE_INT_STATUS_CMD;\r |
623 | if (EFI_ERROR (DataOutByte (FdcDev, &Command))) {\r | |
11f43dfd | 624 | return EFI_DEVICE_ERROR;\r |
625 | }\r | |
626 | \r | |
627 | if (EFI_ERROR (DataInByte (FdcDev, StatusRegister0))) {\r | |
628 | return EFI_DEVICE_ERROR;\r | |
629 | }\r | |
630 | \r | |
631 | if (EFI_ERROR (DataInByte (FdcDev, PresentCylinderNumber))) {\r | |
632 | return EFI_DEVICE_ERROR;\r | |
633 | }\r | |
634 | \r | |
635 | return EFI_SUCCESS;\r | |
636 | }\r | |
637 | \r | |
bcd70414 | 638 | /**\r |
d6321d6e | 639 | Do the Sense Drive Status command.\r |
bcd70414 | 640 | \r |
d6321d6e | 641 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 642 | @param Lba EFI_LBA : Logic block address\r |
643 | \r | |
644 | @retval EFI_SUCCESS: Execute the Sense Drive Status command successfully\r | |
645 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
646 | @retval EFI_WRITE_PROTECTED:The disk is write protected\r | |
647 | \r | |
648 | **/\r | |
11f43dfd | 649 | EFI_STATUS\r |
650 | SenseDrvStatus (\r | |
651 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
652 | IN EFI_LBA Lba\r | |
653 | )\r | |
11f43dfd | 654 | {\r |
655 | FDD_COMMAND_PACKET2 Command;\r | |
656 | UINT8 Head;\r | |
657 | UINT8 EndOfTrack;\r | |
658 | UINTN Index;\r | |
659 | UINT8 StatusRegister3;\r | |
660 | UINT8 *CommandPointer;\r | |
661 | \r | |
662 | //\r | |
663 | // Sense Drive Status command obtains drive status information,\r | |
664 | // it has not execution phase and goes directly to the result phase from the\r | |
665 | // command phase, Status Register 3 contains the drive status information\r | |
666 | //\r | |
667 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
668 | Command.CommandCode = SENSE_DRV_STATUS_CMD;\r | |
669 | \r | |
d6321d6e | 670 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 671 | Command.DiskHeadSel = 0;\r |
672 | } else {\r | |
673 | Command.DiskHeadSel = 1;\r | |
674 | }\r | |
675 | \r | |
676 | EndOfTrack = DISK_1440K_EOT;\r | |
677 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
678 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
679 | \r | |
680 | CommandPointer = (UINT8 *) (&Command);\r | |
681 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
682 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
683 | return EFI_DEVICE_ERROR;\r | |
684 | }\r | |
685 | }\r | |
686 | \r | |
687 | if (EFI_ERROR (DataInByte (FdcDev, &StatusRegister3))) {\r | |
688 | return EFI_DEVICE_ERROR;\r | |
689 | }\r | |
690 | //\r | |
691 | // Io delay\r | |
692 | //\r | |
693 | MicroSecondDelay (50);\r | |
694 | \r | |
695 | //\r | |
696 | // Check Status Register 3 to get drive status information\r | |
697 | //\r | |
698 | return CheckStatus3 (StatusRegister3);\r | |
699 | }\r | |
700 | \r | |
bcd70414 | 701 | /**\r |
d6321d6e | 702 | Update the disk media properties and if necessary reinstall Block I/O interface.\r |
bcd70414 | 703 | \r |
d6321d6e | 704 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 705 | \r |
706 | @retval EFI_SUCCESS: Do the operation successfully\r | |
707 | @retval EFI_DEVICE_ERROR: Fail to the operation\r | |
708 | \r | |
709 | **/\r | |
11f43dfd | 710 | EFI_STATUS\r |
711 | DetectMedia (\r | |
712 | IN FDC_BLK_IO_DEV *FdcDev\r | |
713 | )\r | |
11f43dfd | 714 | {\r |
715 | EFI_STATUS Status;\r | |
d6321d6e | 716 | BOOLEAN Reset;\r |
717 | BOOLEAN ReadOnlyLastTime;\r | |
718 | BOOLEAN MediaPresentLastTime;\r | |
11f43dfd | 719 | \r |
d6321d6e | 720 | Reset = FALSE;\r |
721 | ReadOnlyLastTime = FdcDev->BlkIo.Media->ReadOnly;\r | |
722 | MediaPresentLastTime = FdcDev->BlkIo.Media->MediaPresent;\r | |
11f43dfd | 723 | \r |
724 | //\r | |
725 | // Check disk change\r | |
726 | //\r | |
727 | Status = DisketChanged (FdcDev);\r | |
ae5852b2 | 728 | \r |
729 | if (Status == EFI_MEDIA_CHANGED) {\r | |
11f43dfd | 730 | FdcDev->BlkIo.Media->MediaId++;\r |
731 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
d6321d6e | 732 | Reset = TRUE;\r |
ae5852b2 | 733 | } else if (Status == EFI_NO_MEDIA) {\r |
11f43dfd | 734 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r |
ae5852b2 | 735 | } else if (Status != EFI_SUCCESS) {\r |
11f43dfd | 736 | MotorOff (FdcDev);\r |
737 | return Status;\r | |
738 | //\r | |
739 | // EFI_DEVICE_ERROR\r | |
740 | //\r | |
741 | }\r | |
742 | \r | |
743 | if (FdcDev->BlkIo.Media->MediaPresent) {\r | |
744 | //\r | |
745 | // Check disk write protected\r | |
746 | //\r | |
747 | Status = SenseDrvStatus (FdcDev, 0);\r | |
748 | if (Status == EFI_WRITE_PROTECTED) {\r | |
749 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
750 | } else {\r | |
751 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r | |
752 | }\r | |
753 | }\r | |
754 | \r | |
d6321d6e | 755 | if (FdcDev->BlkIo.Media->MediaPresent && (ReadOnlyLastTime != FdcDev->BlkIo.Media->ReadOnly)) {\r |
756 | Reset = TRUE;\r | |
11f43dfd | 757 | }\r |
758 | \r | |
d6321d6e | 759 | if (MediaPresentLastTime != FdcDev->BlkIo.Media->MediaPresent) {\r |
760 | Reset = TRUE;\r | |
11f43dfd | 761 | }\r |
762 | \r | |
d6321d6e | 763 | if (Reset) {\r |
11f43dfd | 764 | Status = gBS->ReinstallProtocolInterface (\r |
765 | FdcDev->Handle,\r | |
766 | &gEfiBlockIoProtocolGuid,\r | |
767 | &FdcDev->BlkIo,\r | |
768 | &FdcDev->BlkIo\r | |
769 | );\r | |
770 | \r | |
771 | if (EFI_ERROR (Status)) {\r | |
772 | return Status;\r | |
773 | }\r | |
774 | }\r | |
775 | \r | |
776 | return EFI_SUCCESS;\r | |
777 | }\r | |
778 | \r | |
bcd70414 | 779 | /**\r |
d6321d6e | 780 | Set the data rate and so on.\r |
bcd70414 | 781 | \r |
d6321d6e | 782 | @param FdcDev A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 783 | \r |
784 | @retval EFI_SUCCESS success to set the data rate\r | |
785 | **/\r | |
11f43dfd | 786 | EFI_STATUS\r |
787 | Setup (\r | |
788 | IN FDC_BLK_IO_DEV *FdcDev\r | |
789 | )\r | |
11f43dfd | 790 | {\r |
791 | EFI_STATUS Status;\r | |
792 | \r | |
793 | //\r | |
794 | // Set data rate 500kbs\r | |
795 | //\r | |
796 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
797 | \r | |
798 | //\r | |
799 | // Io delay\r | |
800 | //\r | |
801 | MicroSecondDelay (50);\r | |
802 | \r | |
803 | Status = Specify (FdcDev);\r | |
804 | \r | |
805 | if (EFI_ERROR (Status)) {\r | |
806 | return EFI_DEVICE_ERROR;\r | |
807 | }\r | |
808 | \r | |
809 | return EFI_SUCCESS;\r | |
810 | }\r | |
811 | \r | |
bcd70414 | 812 | /**\r |
d6321d6e | 813 | Read or Write a number of blocks in the same cylinder.\r |
bcd70414 | 814 | \r |
d6321d6e | 815 | @param FdcDev A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 816 | @param HostAddress device address \r |
817 | @param Lba The starting logic block address to read from on the device\r | |
818 | @param NumberOfBlocks The number of block wanted to be read or write\r | |
819 | @param Read Operation type: read or write\r | |
820 | \r | |
821 | @retval EFI_SUCCESS Success operate\r | |
822 | \r | |
823 | **/\r | |
11f43dfd | 824 | EFI_STATUS\r |
825 | ReadWriteDataSector (\r | |
826 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
827 | IN VOID *HostAddress,\r | |
828 | IN EFI_LBA Lba,\r | |
829 | IN UINTN NumberOfBlocks,\r | |
830 | IN BOOLEAN Read\r | |
831 | )\r | |
11f43dfd | 832 | {\r |
833 | EFI_STATUS Status;\r | |
834 | FDD_COMMAND_PACKET1 Command;\r | |
835 | FDD_RESULT_PACKET Result;\r | |
836 | UINTN Index;\r | |
837 | UINTN Times;\r | |
838 | UINT8 *CommandPointer;\r | |
839 | \r | |
840 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
841 | EFI_ISA_IO_PROTOCOL *IsaIo;\r | |
842 | UINTN NumberofBytes;\r | |
843 | VOID *Mapping;\r | |
844 | EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r | |
845 | EFI_STATUS Status1;\r | |
846 | UINT8 Channel;\r | |
847 | EFI_ISA_ACPI_RESOURCE *ResourceItem;\r | |
848 | UINT32 Attribute;\r | |
849 | \r | |
850 | Status = Seek (FdcDev, Lba);\r | |
851 | if (EFI_ERROR (Status)) {\r | |
852 | return EFI_DEVICE_ERROR;\r | |
853 | }\r | |
854 | //\r | |
855 | // Map Dma\r | |
856 | //\r | |
857 | IsaIo = FdcDev->IsaIo;\r | |
858 | NumberofBytes = NumberOfBlocks * 512;\r | |
859 | if (Read == READ) {\r | |
860 | Operation = EfiIsaIoOperationSlaveWrite;\r | |
861 | } else {\r | |
862 | Operation = EfiIsaIoOperationSlaveRead;\r | |
863 | }\r | |
864 | \r | |
865 | ResourceItem = IsaIo->ResourceList->ResourceItem;\r | |
866 | Index = 0;\r | |
867 | while (ResourceItem[Index].Type != EfiIsaAcpiResourceEndOfList) {\r | |
868 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceDma) {\r | |
869 | break;\r | |
870 | }\r | |
871 | \r | |
872 | Index++;\r | |
873 | }\r | |
874 | \r | |
875 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceEndOfList) {\r | |
876 | return EFI_DEVICE_ERROR;\r | |
877 | }\r | |
878 | \r | |
879 | Channel = (UINT8) IsaIo->ResourceList->ResourceItem[Index].StartRange;\r | |
880 | Attribute = IsaIo->ResourceList->ResourceItem[Index].Attribute;\r | |
881 | \r | |
882 | Status1 = IsaIo->Map (\r | |
883 | IsaIo,\r | |
884 | Operation,\r | |
885 | Channel,\r | |
886 | Attribute,\r | |
887 | HostAddress,\r | |
888 | &NumberofBytes,\r | |
889 | &DeviceAddress,\r | |
890 | &Mapping\r | |
891 | );\r | |
892 | if (EFI_ERROR (Status1)) {\r | |
893 | return Status1;\r | |
894 | }\r | |
895 | \r | |
896 | //\r | |
897 | // Allocate Read or Write command packet\r | |
898 | //\r | |
899 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET1));\r | |
900 | if (Read == READ) {\r | |
901 | Command.CommandCode = READ_DATA_CMD | CMD_MT | CMD_MFM | CMD_SK;\r | |
902 | } else {\r | |
903 | Command.CommandCode = WRITE_DATA_CMD | CMD_MT | CMD_MFM;\r | |
904 | }\r | |
905 | \r | |
906 | FillPara (FdcDev, Lba, &Command);\r | |
907 | \r | |
908 | //\r | |
909 | // Write command bytes to FDC\r | |
910 | //\r | |
911 | CommandPointer = (UINT8 *) (&Command);\r | |
912 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET1); Index++) {\r | |
913 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
914 | return EFI_DEVICE_ERROR;\r | |
915 | }\r | |
916 | }\r | |
917 | //\r | |
918 | // wait for some time\r | |
919 | //\r | |
920 | Times = (STALL_1_SECOND / 50) + 1;\r | |
921 | do {\r | |
922 | if ((FdcReadPort (FdcDev, FDC_REGISTER_MSR) & 0xc0) == 0xc0) {\r | |
923 | break;\r | |
924 | }\r | |
925 | \r | |
926 | MicroSecondDelay (50);\r | |
927 | Times = Times - 1;\r | |
d6321d6e | 928 | } while (Times >= 0);\r |
11f43dfd | 929 | \r |
930 | if (Times == 0) {\r | |
931 | return EFI_TIMEOUT;\r | |
932 | }\r | |
933 | //\r | |
934 | // Read result bytes from FDC\r | |
935 | //\r | |
936 | CommandPointer = (UINT8 *) (&Result);\r | |
937 | for (Index = 0; Index < sizeof (FDD_RESULT_PACKET); Index++) {\r | |
938 | if (EFI_ERROR (DataInByte (FdcDev, CommandPointer++))) {\r | |
939 | return EFI_DEVICE_ERROR;\r | |
940 | }\r | |
941 | }\r | |
942 | //\r | |
943 | // Flush before Unmap\r | |
944 | //\r | |
945 | if (Read == READ) {\r | |
946 | Status1 = IsaIo->Flush (IsaIo);\r | |
947 | if (EFI_ERROR (Status1)) {\r | |
948 | return Status1;\r | |
949 | }\r | |
950 | }\r | |
951 | //\r | |
952 | // Unmap Dma\r | |
953 | //\r | |
954 | Status1 = IsaIo->Unmap (IsaIo, Mapping);\r | |
955 | if (EFI_ERROR (Status1)) {\r | |
956 | return Status1;\r | |
957 | }\r | |
958 | \r | |
959 | return CheckResult (&Result, FdcDev);\r | |
960 | }\r | |
961 | \r | |
bcd70414 | 962 | /**\r |
d6321d6e | 963 | Fill in FDD command's parameter.\r |
bcd70414 | 964 | \r |
965 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
966 | @param Lba The starting logic block address to read from on the device\r | |
967 | @param Command FDD command\r | |
968 | \r | |
969 | **/\r | |
11f43dfd | 970 | VOID\r |
971 | FillPara (\r | |
972 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
973 | IN EFI_LBA Lba,\r | |
974 | IN FDD_COMMAND_PACKET1 *Command\r | |
975 | )\r | |
11f43dfd | 976 | {\r |
977 | UINT8 EndOfTrack;\r | |
978 | \r | |
979 | //\r | |
980 | // Get EndOfTrack from the Para table\r | |
981 | //\r | |
982 | EndOfTrack = DISK_1440K_EOT;\r | |
983 | \r | |
984 | //\r | |
985 | // Fill the command parameter\r | |
986 | //\r | |
d6321d6e | 987 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 988 | Command->DiskHeadSel = 0;\r |
989 | } else {\r | |
990 | Command->DiskHeadSel = 1;\r | |
991 | }\r | |
992 | \r | |
993 | Command->Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
994 | Command->Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
995 | Command->Sector = (UINT8) ((UINT8) ((UINTN) Lba % EndOfTrack) + 1);\r | |
996 | Command->DiskHeadSel = (UINT8) (Command->DiskHeadSel | (Command->Head << 2));\r | |
997 | Command->Number = DISK_1440K_NUMBER;\r | |
998 | Command->EndOfTrack = DISK_1440K_EOT;\r | |
999 | Command->GapLength = DISK_1440K_GPL;\r | |
1000 | Command->DataLength = DISK_1440K_DTL;\r | |
1001 | }\r | |
1002 | \r | |
bcd70414 | 1003 | /**\r |
d6321d6e | 1004 | Read result byte from Data Register of FDC.\r |
bcd70414 | 1005 | \r |
d6321d6e | 1006 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
1007 | @param Pointer Buffer to store the byte read from FDC\r | |
bcd70414 | 1008 | \r |
d6321d6e | 1009 | @retval EFI_SUCCESS Read result byte from FDC successfully\r |
1010 | @retval EFI_DEVICE_ERROR The FDC is not ready to be read\r | |
bcd70414 | 1011 | \r |
1012 | **/\r | |
11f43dfd | 1013 | EFI_STATUS\r |
1014 | DataInByte (\r | |
d6321d6e | 1015 | IN FDC_BLK_IO_DEV *FdcDev,\r |
1016 | OUT UINT8 *Pointer\r | |
11f43dfd | 1017 | )\r |
11f43dfd | 1018 | {\r |
d6321d6e | 1019 | UINT8 Data;\r |
11f43dfd | 1020 | \r |
1021 | //\r | |
1022 | // wait for 1ms and detect the FDC is ready to be read\r | |
1023 | //\r | |
1024 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_IN, 1))) {\r | |
1025 | return EFI_DEVICE_ERROR;\r | |
1026 | //\r | |
1027 | // is not ready\r | |
1028 | //\r | |
1029 | }\r | |
1030 | \r | |
d6321d6e | 1031 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DTR);\r |
11f43dfd | 1032 | \r |
1033 | //\r | |
1034 | // Io delay\r | |
1035 | //\r | |
1036 | MicroSecondDelay (50);\r | |
1037 | \r | |
d6321d6e | 1038 | *Pointer = Data;\r |
11f43dfd | 1039 | return EFI_SUCCESS;\r |
1040 | }\r | |
1041 | \r | |
bcd70414 | 1042 | /**\r |
d6321d6e | 1043 | Write command byte to Data Register of FDC.\r |
bcd70414 | 1044 | \r |
1045 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
1046 | @param Pointer Be used to save command byte written to FDC\r | |
1047 | \r | |
1048 | @retval EFI_SUCCESS: Write command byte to FDC successfully\r | |
1049 | @retval EFI_DEVICE_ERROR: The FDC is not ready to be written\r | |
1050 | \r | |
1051 | **/\r | |
11f43dfd | 1052 | EFI_STATUS\r |
1053 | DataOutByte (\r | |
1054 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1055 | IN UINT8 *Pointer\r | |
1056 | )\r | |
11f43dfd | 1057 | {\r |
d6321d6e | 1058 | UINT8 Data;\r |
11f43dfd | 1059 | \r |
1060 | //\r | |
1061 | // wait for 1ms and detect the FDC is ready to be written\r | |
1062 | //\r | |
1063 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_OUT, 1))) {\r | |
11f43dfd | 1064 | //\r |
d6321d6e | 1065 | // Not ready\r |
11f43dfd | 1066 | //\r |
d6321d6e | 1067 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 1068 | }\r |
1069 | \r | |
d6321d6e | 1070 | Data = *Pointer;\r |
11f43dfd | 1071 | \r |
d6321d6e | 1072 | FdcWritePort (FdcDev, FDC_REGISTER_DTR, Data);\r |
11f43dfd | 1073 | \r |
1074 | //\r | |
1075 | // Io delay\r | |
1076 | //\r | |
1077 | MicroSecondDelay (50);\r | |
1078 | \r | |
1079 | return EFI_SUCCESS;\r | |
1080 | }\r | |
1081 | \r | |
bcd70414 | 1082 | /**\r |
d6321d6e | 1083 | Detect the specified floppy logic drive is busy or not within a period of time.\r |
bcd70414 | 1084 | \r |
fdb05fa3 | 1085 | @param FdcDev Indicate it is drive A or drive B\r |
bcd70414 | 1086 | @param TimeoutInSeconds the time period for waiting\r |
1087 | \r | |
1088 | @retval EFI_SUCCESS: The drive and command are not busy\r | |
1089 | @retval EFI_TIMEOUT: The drive or command is still busy after a period time that\r | |
1090 | set by TimeoutInSeconds\r | |
1091 | \r | |
1092 | **/\r | |
11f43dfd | 1093 | EFI_STATUS\r |
1094 | FddWaitForBSYClear (\r | |
1095 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1096 | IN UINTN TimeoutInSeconds\r | |
1097 | )\r | |
11f43dfd | 1098 | {\r |
1099 | UINTN Delay;\r | |
1100 | UINT8 StatusRegister;\r | |
1101 | UINT8 Mask;\r | |
1102 | \r | |
1103 | //\r | |
1104 | // How to determine drive and command are busy or not: by the bits of\r | |
1105 | // Main Status Register\r | |
1106 | // bit0: Drive 0 busy (drive A)\r | |
1107 | // bit1: Drive 1 busy (drive B)\r | |
1108 | // bit4: Command busy\r | |
1109 | //\r | |
1110 | //\r | |
1111 | // set mask: for drive A set bit0 & bit4; for drive B set bit1 & bit4\r | |
1112 | //\r | |
d6321d6e | 1113 | Mask = (UINT8) ((FdcDev->Disk == FdcDisk0 ? MSR_DAB : MSR_DBB) | MSR_CB);\r |
11f43dfd | 1114 | \r |
1115 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1116 | do {\r | |
1117 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1118 | if ((StatusRegister & Mask) == 0x00) {\r | |
1119 | break;\r | |
1120 | //\r | |
1121 | // not busy\r | |
1122 | //\r | |
1123 | }\r | |
1124 | \r | |
1125 | MicroSecondDelay (50);\r | |
1126 | Delay = Delay - 1;\r | |
d6321d6e | 1127 | } while (Delay >= 0);\r |
11f43dfd | 1128 | \r |
1129 | if (Delay == 0) {\r | |
1130 | return EFI_TIMEOUT;\r | |
1131 | }\r | |
1132 | \r | |
1133 | return EFI_SUCCESS;\r | |
1134 | }\r | |
1135 | \r | |
bcd70414 | 1136 | /**\r |
1137 | \r | |
d6321d6e | 1138 | Routine Description: Determine whether FDC is ready to write or read.\r |
bcd70414 | 1139 | \r |
1140 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r | |
1141 | @param Dio BOOLEAN: Indicate the FDC is waiting to write or read\r | |
1142 | @param TimeoutInSeconds UINTN: The time period for waiting\r | |
1143 | \r | |
1144 | @retval EFI_SUCCESS: FDC is ready to write or read\r | |
1145 | @retval EFI_NOT_READY: FDC is not ready within the specified time period\r | |
1146 | \r | |
1147 | **/\r | |
11f43dfd | 1148 | EFI_STATUS\r |
1149 | FddDRQReady (\r | |
1150 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1151 | IN BOOLEAN Dio,\r | |
1152 | IN UINTN TimeoutInSeconds\r | |
1153 | )\r | |
11f43dfd | 1154 | {\r |
1155 | UINTN Delay;\r | |
1156 | UINT8 StatusRegister;\r | |
1157 | UINT8 DataInOut;\r | |
1158 | \r | |
1159 | //\r | |
1160 | // Before writing to FDC or reading from FDC, the Host must examine\r | |
1161 | // the bit7(RQM) and bit6(DIO) of the Main Status Register.\r | |
1162 | // That is to say:\r | |
1163 | // command bytes can not be written to Data Register\r | |
1164 | // unless RQM is 1 and DIO is 0\r | |
1165 | // result bytes can not be read from Data Register\r | |
1166 | // unless RQM is 1 and DIO is 1\r | |
1167 | //\r | |
1168 | DataInOut = (UINT8) (Dio << 6);\r | |
1169 | //\r | |
1170 | // in order to compare bit6\r | |
1171 | //\r | |
1172 | Delay = ((TimeoutInSeconds * STALL_1_MSECOND) / 50) + 1;\r | |
1173 | do {\r | |
1174 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1175 | if ((StatusRegister & MSR_RQM) == MSR_RQM && (StatusRegister & MSR_DIO) == DataInOut) {\r | |
1176 | break;\r | |
1177 | //\r | |
1178 | // FDC is ready\r | |
1179 | //\r | |
1180 | }\r | |
1181 | \r | |
1182 | MicroSecondDelay (50);\r | |
1183 | //\r | |
1184 | // Stall for 50 us\r | |
1185 | //\r | |
1186 | Delay = Delay - 1;\r | |
61efb259 | 1187 | } while (Delay > 0);\r |
11f43dfd | 1188 | \r |
1189 | if (Delay == 0) {\r | |
1190 | return EFI_NOT_READY;\r | |
1191 | //\r | |
1192 | // FDC is not ready within the specified time period\r | |
1193 | //\r | |
1194 | }\r | |
1195 | \r | |
1196 | return EFI_SUCCESS;\r | |
1197 | }\r | |
1198 | \r | |
bcd70414 | 1199 | /**\r |
d6321d6e | 1200 | Set FDC control structure's attribute according to result. \r |
bcd70414 | 1201 | \r |
1202 | @param Result Point to result structure\r | |
1203 | @param FdcDev FDC control structure\r | |
1204 | \r | |
fdb05fa3 | 1205 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r |
1206 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1207 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1208 | @retval EFI_SUCCESS - GC_TODO: Add description for return value\r | |
bcd70414 | 1209 | \r |
1210 | **/\r | |
11f43dfd | 1211 | EFI_STATUS\r |
1212 | CheckResult (\r | |
1213 | IN FDD_RESULT_PACKET *Result,\r | |
1214 | IN OUT FDC_BLK_IO_DEV *FdcDev\r | |
1215 | )\r | |
11f43dfd | 1216 | {\r |
1217 | //\r | |
1218 | // Check Status Register0\r | |
1219 | //\r | |
1220 | if ((Result->Status0 & STS0_IC) != IC_NT) {\r | |
1221 | if ((Result->Status0 & STS0_SE) == 0x20) {\r | |
1222 | //\r | |
1223 | // seek error\r | |
1224 | //\r | |
1225 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1226 | }\r | |
1227 | \r | |
1228 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1229 | return EFI_DEVICE_ERROR;\r | |
1230 | }\r | |
1231 | //\r | |
1232 | // Check Status Register1\r | |
1233 | //\r | |
d6321d6e | 1234 | if ((Result->Status1 & (STS1_EN | STS1_DE | STS1_OR | STS1_ND | STS1_NW | STS1_MA)) != 0) {\r |
11f43dfd | 1235 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r |
1236 | return EFI_DEVICE_ERROR;\r | |
1237 | }\r | |
1238 | //\r | |
1239 | // Check Status Register2\r | |
1240 | //\r | |
d6321d6e | 1241 | if ((Result->Status2 & (STS2_CM | STS2_DD | STS2_WC | STS2_BC | STS2_MD)) != 0) {\r |
11f43dfd | 1242 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r |
1243 | return EFI_DEVICE_ERROR;\r | |
1244 | }\r | |
1245 | \r | |
1246 | return EFI_SUCCESS;\r | |
1247 | }\r | |
1248 | \r | |
bcd70414 | 1249 | /**\r |
d6321d6e | 1250 | Check the drive status information.\r |
bcd70414 | 1251 | \r |
1252 | @param StatusRegister3 the value of Status Register 3\r | |
1253 | \r | |
1254 | @retval EFI_SUCCESS The disk is not write protected\r | |
1255 | @retval EFI_WRITE_PROTECTED: The disk is write protected\r | |
1256 | \r | |
1257 | **/\r | |
11f43dfd | 1258 | EFI_STATUS\r |
1259 | CheckStatus3 (\r | |
1260 | IN UINT8 StatusRegister3\r | |
1261 | )\r | |
11f43dfd | 1262 | {\r |
d6321d6e | 1263 | if ((StatusRegister3 & STS3_WP) != 0) {\r |
11f43dfd | 1264 | return EFI_WRITE_PROTECTED;\r |
1265 | }\r | |
1266 | \r | |
1267 | return EFI_SUCCESS;\r | |
1268 | }\r | |
1269 | \r | |
bcd70414 | 1270 | /**\r |
d6321d6e | 1271 | Calculate the number of block in the same cylinder according to LBA.\r |
bcd70414 | 1272 | \r |
d6321d6e | 1273 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 1274 | @param LBA EFI_LBA: The starting logic block address\r |
1275 | @param NumberOfBlocks UINTN: The number of blocks\r | |
1276 | \r | |
1277 | @return The number of blocks in the same cylinder which the starting\r | |
1278 | logic block address is LBA\r | |
1279 | \r | |
1280 | **/\r | |
11f43dfd | 1281 | UINTN\r |
1282 | GetTransferBlockCount (\r | |
1283 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1284 | IN EFI_LBA LBA,\r | |
1285 | IN UINTN NumberOfBlocks\r | |
1286 | )\r | |
11f43dfd | 1287 | {\r |
1288 | UINT8 EndOfTrack;\r | |
1289 | UINT8 Head;\r | |
1290 | UINT8 SectorsInTrack;\r | |
1291 | \r | |
1292 | //\r | |
1293 | // Calculate the number of block in the same cylinder\r | |
1294 | //\r | |
1295 | EndOfTrack = DISK_1440K_EOT;\r | |
1296 | Head = (UINT8) ((UINTN) LBA / EndOfTrack % 2);\r | |
1297 | \r | |
1298 | SectorsInTrack = (UINT8) (EndOfTrack * (2 - Head) - (UINT8) ((UINTN) LBA % EndOfTrack));\r | |
1299 | if (SectorsInTrack < NumberOfBlocks) {\r | |
1300 | return SectorsInTrack;\r | |
1301 | } else {\r | |
1302 | return NumberOfBlocks;\r | |
1303 | }\r | |
1304 | }\r | |
1305 | \r | |
bcd70414 | 1306 | /**\r |
d6321d6e | 1307 | When the Timer(2s) off, turn the drive's motor off.\r |
bcd70414 | 1308 | \r |
1309 | @param Event EFI_EVENT: Event(the timer) whose notification function is being\r | |
1310 | invoked\r | |
1311 | @param Context VOID *: Pointer to the notification function's context\r | |
1312 | \r | |
1313 | **/\r | |
11f43dfd | 1314 | VOID\r |
1315 | EFIAPI\r | |
1316 | FddTimerProc (\r | |
1317 | IN EFI_EVENT Event,\r | |
1318 | IN VOID *Context\r | |
1319 | )\r | |
11f43dfd | 1320 | {\r |
1321 | FDC_BLK_IO_DEV *FdcDev;\r | |
d6321d6e | 1322 | UINT8 Data;\r |
11f43dfd | 1323 | \r |
1324 | FdcDev = (FDC_BLK_IO_DEV *) Context;\r | |
1325 | \r | |
1326 | //\r | |
1327 | // Get the motor status\r | |
1328 | //\r | |
d6321d6e | 1329 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r |
11f43dfd | 1330 | \r |
d6321d6e | 1331 | if (((FdcDev->Disk == FdcDisk0) && ((Data & 0x10) != 0x10)) ||\r |
1332 | ((FdcDev->Disk == FdcDisk1) && ((Data & 0x21) != 0x21))\r | |
11f43dfd | 1333 | ) {\r |
1334 | return ;\r | |
1335 | }\r | |
1336 | //\r | |
1337 | // the motor is on, so need motor off\r | |
1338 | //\r | |
d6321d6e | 1339 | Data = 0x0C;\r |
1340 | Data = (UINT8) (Data | (SELECT_DRV & FdcDev->Disk));\r | |
1341 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 1342 | MicroSecondDelay (500);\r |
1343 | }\r | |
1344 | \r | |
bcd70414 | 1345 | /**\r |
d6321d6e | 1346 | Read an I/O port of FDC.\r |
bcd70414 | 1347 | \r |
d6321d6e | 1348 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV.\r |
1349 | @param[in] Offset The address offset of the I/O port.\r | |
bcd70414 | 1350 | \r |
d6321d6e | 1351 | @retval 8-bit data read from the I/O port.\r |
bcd70414 | 1352 | **/\r |
11f43dfd | 1353 | UINT8\r |
1354 | FdcReadPort (\r | |
1355 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1356 | IN UINT32 Offset\r | |
1357 | )\r | |
11f43dfd | 1358 | {\r |
d6321d6e | 1359 | EFI_STATUS Status;\r |
11f43dfd | 1360 | UINT8 Data;\r |
1361 | \r | |
d6321d6e | 1362 | Status = FdcDev->IsaIo->Io.Read (\r |
1363 | FdcDev->IsaIo,\r | |
1364 | EfiIsaIoWidthUint8,\r | |
1365 | FdcDev->BaseAddress + Offset,\r | |
1366 | 1,\r | |
1367 | &Data\r | |
1368 | );\r | |
1369 | ASSERT_EFI_ERROR (Status);\r | |
11f43dfd | 1370 | \r |
1371 | return Data;\r | |
1372 | }\r | |
1373 | \r | |
bcd70414 | 1374 | /**\r |
d6321d6e | 1375 | Write an I/O port of FDC.\r |
bcd70414 | 1376 | \r |
d6321d6e | 1377 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV\r |
1378 | @param[in] Offset The address offset of the I/O port\r | |
1379 | @param[in] Data 8-bit Value written to the I/O port\r | |
bcd70414 | 1380 | **/\r |
11f43dfd | 1381 | VOID\r |
1382 | FdcWritePort (\r | |
1383 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1384 | IN UINT32 Offset,\r | |
1385 | IN UINT8 Data\r | |
1386 | )\r | |
11f43dfd | 1387 | {\r |
d6321d6e | 1388 | EFI_STATUS Status;\r |
11f43dfd | 1389 | \r |
d6321d6e | 1390 | Status = FdcDev->IsaIo->Io.Write (\r |
1391 | FdcDev->IsaIo,\r | |
1392 | EfiIsaIoWidthUint8,\r | |
1393 | FdcDev->BaseAddress + Offset,\r | |
1394 | 1,\r | |
1395 | &Data\r | |
1396 | );\r | |
1397 | ASSERT_EFI_ERROR (Status);\r | |
11f43dfd | 1398 | }\r |
bcd70414 | 1399 | \r |