Commit | Line | Data |
---|---|---|
d6321d6e | 1 | /** @file\r |
2 | Internal floppy disk controller programming functions for the floppy driver.\r | |
0a6f4824 LG |
3 | \r |
4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
c0a00b14 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
11f43dfd | 6 | \r |
f8cd287b | 7 | **/\r |
11f43dfd | 8 | \r |
9 | #include "IsaFloppy.h"\r | |
10 | \r | |
bcd70414 | 11 | /**\r |
d6321d6e | 12 | Detect whether a floppy drive is present or not.\r |
0a6f4824 | 13 | \r |
d6321d6e | 14 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 15 | \r |
d6321d6e | 16 | @retval EFI_SUCCESS The floppy disk drive is present\r |
17 | @retval EFI_NOT_FOUND The floppy disk drive is not present\r | |
bcd70414 | 18 | **/\r |
11f43dfd | 19 | EFI_STATUS\r |
20 | DiscoverFddDevice (\r | |
21 | IN FDC_BLK_IO_DEV *FdcDev\r | |
22 | )\r | |
11f43dfd | 23 | {\r |
24 | EFI_STATUS Status;\r | |
25 | \r | |
26 | FdcDev->BlkIo.Media = &FdcDev->BlkMedia;\r | |
27 | \r | |
11f43dfd | 28 | Status = FddIdentify (FdcDev);\r |
29 | if (EFI_ERROR (Status)) {\r | |
30 | return EFI_NOT_FOUND;\r | |
31 | }\r | |
32 | \r | |
33 | FdcDev->BlkIo.Reset = FdcReset;\r | |
34 | FdcDev->BlkIo.FlushBlocks = FddFlushBlocks;\r | |
35 | FdcDev->BlkIo.ReadBlocks = FddReadBlocks;\r | |
36 | FdcDev->BlkIo.WriteBlocks = FddWriteBlocks;\r | |
37 | FdcDev->BlkMedia.LogicalPartition = FALSE;\r | |
38 | FdcDev->BlkMedia.WriteCaching = FALSE;\r | |
39 | \r | |
40 | return EFI_SUCCESS;\r | |
41 | }\r | |
42 | \r | |
bcd70414 | 43 | /**\r |
d6321d6e | 44 | Do recalibrate and check if the drive is present or not\r |
45 | and set the media parameters if the driver is present.\r | |
0a6f4824 | 46 | \r |
d6321d6e | 47 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
bcd70414 | 48 | \r |
d6321d6e | 49 | @retval EFI_SUCCESS The floppy disk drive is present\r |
50 | @retval EFI_DEVICE_ERROR The floppy disk drive is not present\r | |
bcd70414 | 51 | **/\r |
11f43dfd | 52 | EFI_STATUS\r |
53 | FddIdentify (\r | |
54 | IN FDC_BLK_IO_DEV *FdcDev\r | |
55 | )\r | |
11f43dfd | 56 | {\r |
57 | EFI_STATUS Status;\r | |
58 | \r | |
59 | //\r | |
60 | // Set Floppy Disk Controller's motor on\r | |
61 | //\r | |
62 | Status = MotorOn (FdcDev);\r | |
63 | if (EFI_ERROR (Status)) {\r | |
64 | return EFI_DEVICE_ERROR;\r | |
65 | }\r | |
66 | \r | |
67 | Status = Recalibrate (FdcDev);\r | |
68 | \r | |
69 | if (EFI_ERROR (Status)) {\r | |
70 | MotorOff (FdcDev);\r | |
71 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
72 | return EFI_DEVICE_ERROR;\r | |
73 | }\r | |
74 | //\r | |
75 | // Set Media Parameter\r | |
76 | //\r | |
77 | FdcDev->BlkIo.Media->RemovableMedia = TRUE;\r | |
78 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
11f43dfd | 79 | FdcDev->BlkIo.Media->MediaId = 0;\r |
80 | \r | |
81 | //\r | |
82 | // Check Media\r | |
83 | //\r | |
84 | Status = DisketChanged (FdcDev);\r | |
11f43dfd | 85 | \r |
ae5852b2 | 86 | if (Status == EFI_NO_MEDIA) {\r |
87 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r | |
179a2e97 | 88 | } else if ((Status != EFI_MEDIA_CHANGED) &&\r |
89 | (Status != EFI_SUCCESS)) {\r | |
11f43dfd | 90 | MotorOff (FdcDev);\r |
91 | return Status;\r | |
92 | }\r | |
ae5852b2 | 93 | \r |
11f43dfd | 94 | //\r |
95 | // Check Disk Write Protected\r | |
96 | //\r | |
97 | Status = SenseDrvStatus (FdcDev, 0);\r | |
11f43dfd | 98 | \r |
ae5852b2 | 99 | if (Status == EFI_WRITE_PROTECTED) {\r |
100 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
101 | } else if (Status == EFI_SUCCESS) {\r | |
11f43dfd | 102 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r |
ae5852b2 | 103 | } else {\r |
11f43dfd | 104 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 105 | }\r |
106 | \r | |
107 | MotorOff (FdcDev);\r | |
108 | \r | |
109 | //\r | |
110 | // Set Media Default Type\r | |
111 | //\r | |
112 | FdcDev->BlkIo.Media->BlockSize = DISK_1440K_BYTEPERSECTOR;\r | |
113 | FdcDev->BlkIo.Media->LastBlock = DISK_1440K_EOT * 2 * (DISK_1440K_MAXTRACKNUM + 1) - 1;\r | |
114 | \r | |
115 | return EFI_SUCCESS;\r | |
116 | }\r | |
117 | \r | |
bcd70414 | 118 | /**\r |
d6321d6e | 119 | Reset the Floppy Logic Drive.\r |
0a6f4824 | 120 | \r |
d6321d6e | 121 | @param FdcDev FDC_BLK_IO_DEV * : A pointer to the FDC_BLK_IO_DEV\r |
0a6f4824 | 122 | \r |
bcd70414 | 123 | @retval EFI_SUCCESS: The Floppy Logic Drive is reset\r |
124 | @retval EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly and\r | |
125 | can not be reset\r | |
126 | \r | |
127 | **/\r | |
11f43dfd | 128 | EFI_STATUS\r |
129 | FddReset (\r | |
130 | IN FDC_BLK_IO_DEV *FdcDev\r | |
131 | )\r | |
11f43dfd | 132 | {\r |
d6321d6e | 133 | UINT8 Data;\r |
11f43dfd | 134 | UINT8 StatusRegister0;\r |
135 | UINT8 PresentCylinderNumber;\r | |
136 | UINTN Index;\r | |
137 | \r | |
138 | //\r | |
139 | // Report reset progress code\r | |
140 | //\r | |
141 | REPORT_STATUS_CODE_WITH_DEVICE_PATH (\r | |
142 | EFI_PROGRESS_CODE,\r | |
143 | EFI_PERIPHERAL_REMOVABLE_MEDIA | EFI_P_PC_RESET,\r | |
144 | FdcDev->DevicePath\r | |
145 | );\r | |
146 | \r | |
147 | //\r | |
148 | // Reset specified Floppy Logic Drive according to FdcDev -> Disk\r | |
149 | // Set Digital Output Register(DOR) to do reset work\r | |
150 | // bit0 & bit1 of DOR : Drive Select\r | |
151 | // bit2 : Reset bit\r | |
152 | // bit3 : DMA and Int bit\r | |
153 | // Reset : a "0" written to bit2 resets the FDC, this reset will remain\r | |
154 | // active until\r | |
155 | // a "1" is written to this bit.\r | |
156 | // Reset step 1:\r | |
157 | // use bit0 & bit1 to select the logic drive\r | |
158 | // write "0" to bit2\r | |
159 | //\r | |
d6321d6e | 160 | Data = 0x0;\r |
161 | Data = (UINT8) (Data | (SELECT_DRV & FdcDev->Disk));\r | |
162 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 163 | \r |
164 | //\r | |
165 | // wait some time,at least 120us\r | |
166 | //\r | |
167 | MicroSecondDelay (500);\r | |
168 | \r | |
169 | //\r | |
170 | // Reset step 2:\r | |
171 | // write "1" to bit2\r | |
172 | // write "1" to bit3 : enable DMA\r | |
173 | //\r | |
d6321d6e | 174 | Data |= 0x0C;\r |
175 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 176 | \r |
177 | //\r | |
178 | // Experience value\r | |
179 | //\r | |
180 | MicroSecondDelay (2000);\r | |
181 | \r | |
182 | //\r | |
183 | // wait specified floppy logic drive is not busy\r | |
184 | //\r | |
185 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
186 | return EFI_DEVICE_ERROR;\r | |
187 | }\r | |
188 | //\r | |
189 | // Set the Transfer Data Rate\r | |
190 | //\r | |
191 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
192 | \r | |
193 | //\r | |
194 | // Experience value\r | |
195 | //\r | |
196 | MicroSecondDelay (100);\r | |
197 | \r | |
198 | //\r | |
199 | // Issue Sense interrupt command for each drive (total 4 drives)\r | |
200 | //\r | |
201 | for (Index = 0; Index < 4; Index++) {\r | |
202 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
203 | return EFI_DEVICE_ERROR;\r | |
204 | }\r | |
205 | }\r | |
206 | //\r | |
207 | // issue Specify command\r | |
208 | //\r | |
209 | if (EFI_ERROR (Specify (FdcDev))) {\r | |
210 | return EFI_DEVICE_ERROR;\r | |
211 | }\r | |
212 | \r | |
213 | return EFI_SUCCESS;\r | |
214 | }\r | |
215 | \r | |
bcd70414 | 216 | /**\r |
d6321d6e | 217 | Turn the floppy disk drive's motor on.\r |
218 | The drive's motor must be on before any command can be executed.\r | |
0a6f4824 | 219 | \r |
d6321d6e | 220 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
0a6f4824 | 221 | \r |
d6321d6e | 222 | @retval EFI_SUCCESS The drive's motor was turned on successfully\r |
223 | @retval EFI_DEVICE_ERROR The drive is busy, so can not turn motor on\r | |
bcd70414 | 224 | **/\r |
11f43dfd | 225 | EFI_STATUS\r |
226 | MotorOn (\r | |
227 | IN FDC_BLK_IO_DEV *FdcDev\r | |
228 | )\r | |
11f43dfd | 229 | {\r |
230 | EFI_STATUS Status;\r | |
d6321d6e | 231 | UINT8 DorData;\r |
11f43dfd | 232 | \r |
233 | //\r | |
234 | // Control of the floppy drive motors is a big pain. If motor is off, you have\r | |
235 | // to turn it on first. But you can not leave the motor on all the time, since\r | |
236 | // that would wear out the disk. On the other hand, if you turn the motor off\r | |
237 | // after each operation, the system performance will be awful. The compromise\r | |
238 | // used in this driver is to leave the motor on for 2 seconds after\r | |
239 | // each operation. If a new operation is started in that interval(2s),\r | |
240 | // the motor need not be turned on again. If no new operation is started,\r | |
241 | // a timer goes off and the motor is turned off\r | |
242 | //\r | |
243 | //\r | |
244 | // Cancel the timer\r | |
245 | //\r | |
246 | Status = gBS->SetTimer (FdcDev->Event, TimerCancel, 0);\r | |
d6321d6e | 247 | ASSERT_EFI_ERROR (Status);\r |
11f43dfd | 248 | \r |
11f43dfd | 249 | //\r |
250 | // Get the motor status\r | |
251 | //\r | |
d6321d6e | 252 | DorData = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r |
11f43dfd | 253 | \r |
d6321d6e | 254 | if (((FdcDev->Disk == FdcDisk0) && ((DorData & 0x10) == 0x10)) ||\r |
255 | ((FdcDev->Disk == FdcDisk1) && ((DorData & 0x21) == 0x21))\r | |
11f43dfd | 256 | ) {\r |
257 | return EFI_SUCCESS;\r | |
258 | }\r | |
259 | //\r | |
260 | // The drive's motor is off, so need turn it on\r | |
261 | // first look at command and drive are busy or not\r | |
262 | //\r | |
263 | if (EFI_ERROR (FddWaitForBSYClear (FdcDev, 1))) {\r | |
264 | return EFI_DEVICE_ERROR;\r | |
265 | }\r | |
266 | //\r | |
267 | // for drive A: 1CH, drive B: 2DH\r | |
268 | //\r | |
d6321d6e | 269 | DorData = 0x0C;\r |
270 | DorData = (UINT8) (DorData | (SELECT_DRV & FdcDev->Disk));\r | |
271 | if (FdcDev->Disk == FdcDisk0) {\r | |
11f43dfd | 272 | //\r |
273 | // drive A\r | |
274 | //\r | |
d6321d6e | 275 | DorData |= DRVA_MOTOR_ON;\r |
11f43dfd | 276 | } else {\r |
277 | //\r | |
278 | // drive B\r | |
279 | //\r | |
d6321d6e | 280 | DorData |= DRVB_MOTOR_ON;\r |
11f43dfd | 281 | }\r |
282 | \r | |
d6321d6e | 283 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, DorData);\r |
11f43dfd | 284 | \r |
285 | //\r | |
286 | // Experience value\r | |
287 | //\r | |
288 | MicroSecondDelay (4000);\r | |
289 | \r | |
290 | return EFI_SUCCESS;\r | |
291 | }\r | |
292 | \r | |
bcd70414 | 293 | /**\r |
d6321d6e | 294 | Set a Timer and when Timer goes off, turn the motor off.\r |
0a6f4824 | 295 | \r |
d6321d6e | 296 | @param[in] FdcDev A pointer to the FDC_BLK_IO_DEV\r |
0a6f4824 | 297 | \r |
d6321d6e | 298 | @retval EFI_SUCCESS Set the Timer successfully\r |
299 | @retval EFI_INVALID_PARAMETER Fail to Set the timer\r | |
bcd70414 | 300 | **/\r |
11f43dfd | 301 | EFI_STATUS\r |
302 | MotorOff (\r | |
303 | IN FDC_BLK_IO_DEV *FdcDev\r | |
304 | )\r | |
11f43dfd | 305 | {\r |
306 | //\r | |
307 | // Set the timer : 2s\r | |
308 | //\r | |
309 | return gBS->SetTimer (FdcDev->Event, TimerRelative, 20000000);\r | |
310 | }\r | |
311 | \r | |
bcd70414 | 312 | /**\r |
d6321d6e | 313 | Detect whether the disk in the drive is changed or not.\r |
0a6f4824 | 314 | \r |
d6321d6e | 315 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV\r |
0a6f4824 | 316 | \r |
d6321d6e | 317 | @retval EFI_SUCCESS No disk media change\r |
318 | @retval EFI_DEVICE_ERROR Fail to do the recalibrate or seek operation\r | |
319 | @retval EFI_NO_MEDIA No disk in the drive\r | |
320 | @retval EFI_MEDIA_CHANGED There is a new disk in the drive\r | |
bcd70414 | 321 | **/\r |
11f43dfd | 322 | EFI_STATUS\r |
323 | DisketChanged (\r | |
324 | IN FDC_BLK_IO_DEV *FdcDev\r | |
325 | )\r | |
11f43dfd | 326 | {\r |
327 | EFI_STATUS Status;\r | |
d6321d6e | 328 | UINT8 Data;\r |
11f43dfd | 329 | \r |
330 | //\r | |
331 | // Check change line\r | |
332 | //\r | |
d6321d6e | 333 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r |
11f43dfd | 334 | \r |
335 | //\r | |
336 | // Io delay\r | |
337 | //\r | |
338 | MicroSecondDelay (50);\r | |
339 | \r | |
d6321d6e | 340 | if ((Data & DIR_DCL) == 0x80) {\r |
11f43dfd | 341 | //\r |
342 | // disk change line is active\r | |
343 | //\r | |
344 | if (FdcDev->PresentCylinderNumber != 0) {\r | |
345 | Status = Recalibrate (FdcDev);\r | |
346 | } else {\r | |
347 | Status = Seek (FdcDev, 0x30);\r | |
348 | }\r | |
349 | \r | |
350 | if (EFI_ERROR (Status)) {\r | |
351 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
352 | return EFI_DEVICE_ERROR;\r | |
353 | //\r | |
354 | // Fail to do the seek or recalibrate operation\r | |
355 | //\r | |
356 | }\r | |
357 | \r | |
d6321d6e | 358 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DIR);\r |
11f43dfd | 359 | \r |
360 | //\r | |
361 | // Io delay\r | |
362 | //\r | |
363 | MicroSecondDelay (50);\r | |
364 | \r | |
d6321d6e | 365 | if ((Data & DIR_DCL) == 0x80) {\r |
11f43dfd | 366 | return EFI_NO_MEDIA;\r |
367 | }\r | |
368 | \r | |
369 | return EFI_MEDIA_CHANGED;\r | |
370 | }\r | |
371 | \r | |
372 | return EFI_SUCCESS;\r | |
373 | }\r | |
374 | \r | |
bcd70414 | 375 | /**\r |
376 | Do the Specify command, this command sets DMA operation\r | |
377 | and the initial values for each of the three internal\r | |
d6321d6e | 378 | times: HUT, SRT and HLT.\r |
0a6f4824 | 379 | \r |
d6321d6e | 380 | @param[in] FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
0a6f4824 | 381 | \r |
d6321d6e | 382 | @retval EFI_SUCCESS Execute the Specify command successfully\r |
383 | @retval EFI_DEVICE_ERROR Fail to execute the command\r | |
bcd70414 | 384 | **/\r |
11f43dfd | 385 | EFI_STATUS\r |
386 | Specify (\r | |
387 | IN FDC_BLK_IO_DEV *FdcDev\r | |
388 | )\r | |
11f43dfd | 389 | {\r |
390 | FDD_SPECIFY_CMD Command;\r | |
391 | UINTN Index;\r | |
392 | UINT8 *CommandPointer;\r | |
393 | \r | |
394 | ZeroMem (&Command, sizeof (FDD_SPECIFY_CMD));\r | |
395 | Command.CommandCode = SPECIFY_CMD;\r | |
396 | //\r | |
397 | // set SRT, HUT\r | |
398 | //\r | |
399 | Command.SrtHut = 0xdf;\r | |
400 | //\r | |
401 | // 0xdf;\r | |
402 | //\r | |
403 | // set HLT and DMA\r | |
404 | //\r | |
405 | Command.HltNd = 0x02;\r | |
406 | \r | |
407 | CommandPointer = (UINT8 *) (&Command);\r | |
408 | for (Index = 0; Index < sizeof (FDD_SPECIFY_CMD); Index++) {\r | |
409 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
410 | return EFI_DEVICE_ERROR;\r | |
411 | }\r | |
412 | }\r | |
413 | \r | |
414 | return EFI_SUCCESS;\r | |
415 | }\r | |
416 | \r | |
bcd70414 | 417 | /**\r |
d6321d6e | 418 | Set the head of floppy drive to track 0.\r |
0a6f4824 | 419 | \r |
d6321d6e | 420 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 421 | @retval EFI_SUCCESS: Execute the Recalibrate operation successfully\r |
422 | @retval EFI_DEVICE_ERROR: Fail to execute the Recalibrate operation\r | |
423 | \r | |
424 | **/\r | |
11f43dfd | 425 | EFI_STATUS\r |
426 | Recalibrate (\r | |
427 | IN FDC_BLK_IO_DEV *FdcDev\r | |
428 | )\r | |
11f43dfd | 429 | {\r |
430 | FDD_COMMAND_PACKET2 Command;\r | |
431 | UINTN Index;\r | |
432 | UINT8 StatusRegister0;\r | |
433 | UINT8 PresentCylinderNumber;\r | |
434 | UINT8 *CommandPointer;\r | |
435 | UINT8 Count;\r | |
436 | \r | |
437 | Count = 2;\r | |
438 | \r | |
439 | while (Count > 0) {\r | |
440 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
441 | Command.CommandCode = RECALIBRATE_CMD;\r | |
442 | //\r | |
443 | // drive select\r | |
444 | //\r | |
d6321d6e | 445 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 446 | Command.DiskHeadSel = 0;\r |
447 | //\r | |
448 | // 0\r | |
449 | //\r | |
450 | } else {\r | |
451 | Command.DiskHeadSel = 1;\r | |
452 | //\r | |
453 | // 1\r | |
454 | //\r | |
455 | }\r | |
456 | \r | |
457 | CommandPointer = (UINT8 *) (&Command);\r | |
458 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
459 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
460 | return EFI_DEVICE_ERROR;\r | |
461 | }\r | |
462 | }\r | |
463 | //\r | |
464 | // Experience value\r | |
465 | //\r | |
466 | MicroSecondDelay (250000);\r | |
467 | //\r | |
468 | // need modify according to 1.44M or 2.88M\r | |
469 | //\r | |
470 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
471 | return EFI_DEVICE_ERROR;\r | |
472 | }\r | |
473 | \r | |
474 | if ((StatusRegister0 & 0xf0) == 0x20 && PresentCylinderNumber == 0) {\r | |
475 | FdcDev->PresentCylinderNumber = 0;\r | |
476 | FdcDev->ControllerState->NeedRecalibrate = FALSE;\r | |
477 | return EFI_SUCCESS;\r | |
478 | } else {\r | |
479 | Count--;\r | |
480 | if (Count == 0) {\r | |
481 | return EFI_DEVICE_ERROR;\r | |
482 | }\r | |
483 | }\r | |
484 | }\r | |
485 | //\r | |
486 | // end while\r | |
487 | //\r | |
488 | return EFI_SUCCESS;\r | |
489 | }\r | |
490 | \r | |
bcd70414 | 491 | /**\r |
d6321d6e | 492 | Set the head of floppy drive to the new cylinder.\r |
0a6f4824 | 493 | \r |
d6321d6e | 494 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 495 | @param Lba EFI_LBA : The logic block address want to seek\r |
0a6f4824 | 496 | \r |
bcd70414 | 497 | @retval EFI_SUCCESS: Execute the Seek operation successfully\r |
498 | @retval EFI_DEVICE_ERROR: Fail to execute the Seek operation\r | |
499 | \r | |
500 | **/\r | |
11f43dfd | 501 | EFI_STATUS\r |
502 | Seek (\r | |
503 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
504 | IN EFI_LBA Lba\r | |
505 | )\r | |
11f43dfd | 506 | {\r |
507 | FDD_SEEK_CMD Command;\r | |
508 | UINT8 EndOfTrack;\r | |
509 | UINT8 Head;\r | |
510 | UINT8 Cylinder;\r | |
511 | UINT8 StatusRegister0;\r | |
512 | UINT8 *CommandPointer;\r | |
513 | UINT8 PresentCylinderNumber;\r | |
514 | UINTN Index;\r | |
515 | UINT8 DelayTime;\r | |
516 | \r | |
517 | if (FdcDev->ControllerState->NeedRecalibrate) {\r | |
518 | if (EFI_ERROR (Recalibrate (FdcDev))) {\r | |
519 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
520 | return EFI_DEVICE_ERROR;\r | |
521 | }\r | |
522 | }\r | |
523 | \r | |
524 | EndOfTrack = DISK_1440K_EOT;\r | |
525 | //\r | |
526 | // Calculate cylinder based on Lba and EOT\r | |
527 | //\r | |
528 | Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
529 | \r | |
530 | //\r | |
531 | // if the destination cylinder is the present cylinder, unnecessary to do the\r | |
532 | // seek operation\r | |
533 | //\r | |
534 | if (FdcDev->PresentCylinderNumber == Cylinder) {\r | |
535 | return EFI_SUCCESS;\r | |
536 | }\r | |
537 | //\r | |
538 | // Calculate the head : 0 or 1\r | |
539 | //\r | |
540 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
541 | \r | |
542 | ZeroMem (&Command, sizeof (FDD_SEEK_CMD));\r | |
543 | Command.CommandCode = SEEK_CMD;\r | |
d6321d6e | 544 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 545 | Command.DiskHeadSel = 0;\r |
546 | //\r | |
547 | // 0\r | |
548 | //\r | |
549 | } else {\r | |
550 | Command.DiskHeadSel = 1;\r | |
551 | //\r | |
552 | // 1\r | |
553 | //\r | |
554 | }\r | |
555 | \r | |
556 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
557 | Command.NewCylinder = Cylinder;\r | |
558 | \r | |
559 | CommandPointer = (UINT8 *) (&Command);\r | |
560 | for (Index = 0; Index < sizeof (FDD_SEEK_CMD); Index++) {\r | |
561 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
562 | return EFI_DEVICE_ERROR;\r | |
563 | }\r | |
564 | }\r | |
565 | //\r | |
566 | // Io delay\r | |
567 | //\r | |
568 | MicroSecondDelay (100);\r | |
569 | \r | |
570 | //\r | |
571 | // Calculate waiting time\r | |
572 | //\r | |
573 | if (FdcDev->PresentCylinderNumber > Cylinder) {\r | |
574 | DelayTime = (UINT8) (FdcDev->PresentCylinderNumber - Cylinder);\r | |
575 | } else {\r | |
576 | DelayTime = (UINT8) (Cylinder - FdcDev->PresentCylinderNumber);\r | |
577 | }\r | |
578 | \r | |
579 | MicroSecondDelay ((DelayTime + 1) * 4000);\r | |
580 | \r | |
581 | if (EFI_ERROR (SenseIntStatus (FdcDev, &StatusRegister0, &PresentCylinderNumber))) {\r | |
582 | return EFI_DEVICE_ERROR;\r | |
583 | }\r | |
584 | \r | |
585 | if ((StatusRegister0 & 0xf0) == 0x20) {\r | |
586 | FdcDev->PresentCylinderNumber = Command.NewCylinder;\r | |
587 | return EFI_SUCCESS;\r | |
588 | } else {\r | |
589 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
590 | return EFI_DEVICE_ERROR;\r | |
591 | }\r | |
592 | }\r | |
593 | \r | |
bcd70414 | 594 | /**\r |
595 | Do the Sense Interrupt Status command, this command\r | |
d6321d6e | 596 | resets the interrupt signal.\r |
0a6f4824 | 597 | \r |
d6321d6e | 598 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 599 | @param StatusRegister0 UINT8 *: Be used to save Status Register 0 read from FDC\r |
600 | @param PresentCylinderNumber UINT8 *: Be used to save present cylinder number\r | |
601 | read from FDC\r | |
0a6f4824 | 602 | \r |
bcd70414 | 603 | @retval EFI_SUCCESS: Execute the Sense Interrupt Status command successfully\r |
604 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
605 | \r | |
606 | **/\r | |
11f43dfd | 607 | EFI_STATUS\r |
608 | SenseIntStatus (\r | |
609 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
610 | IN OUT UINT8 *StatusRegister0,\r | |
611 | IN OUT UINT8 *PresentCylinderNumber\r | |
612 | )\r | |
11f43dfd | 613 | {\r |
d6321d6e | 614 | UINT8 Command;\r |
11f43dfd | 615 | \r |
d6321d6e | 616 | Command = SENSE_INT_STATUS_CMD;\r |
617 | if (EFI_ERROR (DataOutByte (FdcDev, &Command))) {\r | |
11f43dfd | 618 | return EFI_DEVICE_ERROR;\r |
619 | }\r | |
620 | \r | |
621 | if (EFI_ERROR (DataInByte (FdcDev, StatusRegister0))) {\r | |
622 | return EFI_DEVICE_ERROR;\r | |
623 | }\r | |
624 | \r | |
625 | if (EFI_ERROR (DataInByte (FdcDev, PresentCylinderNumber))) {\r | |
626 | return EFI_DEVICE_ERROR;\r | |
627 | }\r | |
628 | \r | |
629 | return EFI_SUCCESS;\r | |
630 | }\r | |
631 | \r | |
bcd70414 | 632 | /**\r |
d6321d6e | 633 | Do the Sense Drive Status command.\r |
0a6f4824 | 634 | \r |
d6321d6e | 635 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 636 | @param Lba EFI_LBA : Logic block address\r |
0a6f4824 | 637 | \r |
bcd70414 | 638 | @retval EFI_SUCCESS: Execute the Sense Drive Status command successfully\r |
639 | @retval EFI_DEVICE_ERROR: Fail to execute the command\r | |
640 | @retval EFI_WRITE_PROTECTED:The disk is write protected\r | |
641 | \r | |
642 | **/\r | |
11f43dfd | 643 | EFI_STATUS\r |
644 | SenseDrvStatus (\r | |
645 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
646 | IN EFI_LBA Lba\r | |
647 | )\r | |
11f43dfd | 648 | {\r |
649 | FDD_COMMAND_PACKET2 Command;\r | |
650 | UINT8 Head;\r | |
651 | UINT8 EndOfTrack;\r | |
652 | UINTN Index;\r | |
653 | UINT8 StatusRegister3;\r | |
654 | UINT8 *CommandPointer;\r | |
655 | \r | |
656 | //\r | |
657 | // Sense Drive Status command obtains drive status information,\r | |
658 | // it has not execution phase and goes directly to the result phase from the\r | |
659 | // command phase, Status Register 3 contains the drive status information\r | |
660 | //\r | |
661 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET2));\r | |
662 | Command.CommandCode = SENSE_DRV_STATUS_CMD;\r | |
663 | \r | |
d6321d6e | 664 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 665 | Command.DiskHeadSel = 0;\r |
666 | } else {\r | |
667 | Command.DiskHeadSel = 1;\r | |
668 | }\r | |
669 | \r | |
670 | EndOfTrack = DISK_1440K_EOT;\r | |
671 | Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
672 | Command.DiskHeadSel = (UINT8) (Command.DiskHeadSel | (Head << 2));\r | |
673 | \r | |
674 | CommandPointer = (UINT8 *) (&Command);\r | |
675 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET2); Index++) {\r | |
676 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
677 | return EFI_DEVICE_ERROR;\r | |
678 | }\r | |
679 | }\r | |
680 | \r | |
681 | if (EFI_ERROR (DataInByte (FdcDev, &StatusRegister3))) {\r | |
682 | return EFI_DEVICE_ERROR;\r | |
683 | }\r | |
684 | //\r | |
685 | // Io delay\r | |
686 | //\r | |
687 | MicroSecondDelay (50);\r | |
688 | \r | |
689 | //\r | |
690 | // Check Status Register 3 to get drive status information\r | |
691 | //\r | |
692 | return CheckStatus3 (StatusRegister3);\r | |
693 | }\r | |
694 | \r | |
bcd70414 | 695 | /**\r |
d6321d6e | 696 | Update the disk media properties and if necessary reinstall Block I/O interface.\r |
0a6f4824 | 697 | \r |
d6321d6e | 698 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
0a6f4824 | 699 | \r |
bcd70414 | 700 | @retval EFI_SUCCESS: Do the operation successfully\r |
701 | @retval EFI_DEVICE_ERROR: Fail to the operation\r | |
702 | \r | |
703 | **/\r | |
11f43dfd | 704 | EFI_STATUS\r |
705 | DetectMedia (\r | |
706 | IN FDC_BLK_IO_DEV *FdcDev\r | |
707 | )\r | |
11f43dfd | 708 | {\r |
709 | EFI_STATUS Status;\r | |
d6321d6e | 710 | BOOLEAN Reset;\r |
711 | BOOLEAN ReadOnlyLastTime;\r | |
712 | BOOLEAN MediaPresentLastTime;\r | |
11f43dfd | 713 | \r |
d6321d6e | 714 | Reset = FALSE;\r |
715 | ReadOnlyLastTime = FdcDev->BlkIo.Media->ReadOnly;\r | |
716 | MediaPresentLastTime = FdcDev->BlkIo.Media->MediaPresent;\r | |
11f43dfd | 717 | \r |
718 | //\r | |
719 | // Check disk change\r | |
720 | //\r | |
721 | Status = DisketChanged (FdcDev);\r | |
ae5852b2 | 722 | \r |
723 | if (Status == EFI_MEDIA_CHANGED) {\r | |
11f43dfd | 724 | FdcDev->BlkIo.Media->MediaId++;\r |
725 | FdcDev->BlkIo.Media->MediaPresent = TRUE;\r | |
d6321d6e | 726 | Reset = TRUE;\r |
ae5852b2 | 727 | } else if (Status == EFI_NO_MEDIA) {\r |
11f43dfd | 728 | FdcDev->BlkIo.Media->MediaPresent = FALSE;\r |
ae5852b2 | 729 | } else if (Status != EFI_SUCCESS) {\r |
11f43dfd | 730 | MotorOff (FdcDev);\r |
731 | return Status;\r | |
732 | //\r | |
733 | // EFI_DEVICE_ERROR\r | |
734 | //\r | |
735 | }\r | |
736 | \r | |
737 | if (FdcDev->BlkIo.Media->MediaPresent) {\r | |
738 | //\r | |
739 | // Check disk write protected\r | |
740 | //\r | |
741 | Status = SenseDrvStatus (FdcDev, 0);\r | |
742 | if (Status == EFI_WRITE_PROTECTED) {\r | |
743 | FdcDev->BlkIo.Media->ReadOnly = TRUE;\r | |
744 | } else {\r | |
745 | FdcDev->BlkIo.Media->ReadOnly = FALSE;\r | |
746 | }\r | |
747 | }\r | |
748 | \r | |
d6321d6e | 749 | if (FdcDev->BlkIo.Media->MediaPresent && (ReadOnlyLastTime != FdcDev->BlkIo.Media->ReadOnly)) {\r |
750 | Reset = TRUE;\r | |
11f43dfd | 751 | }\r |
752 | \r | |
d6321d6e | 753 | if (MediaPresentLastTime != FdcDev->BlkIo.Media->MediaPresent) {\r |
754 | Reset = TRUE;\r | |
11f43dfd | 755 | }\r |
756 | \r | |
d6321d6e | 757 | if (Reset) {\r |
11f43dfd | 758 | Status = gBS->ReinstallProtocolInterface (\r |
759 | FdcDev->Handle,\r | |
760 | &gEfiBlockIoProtocolGuid,\r | |
761 | &FdcDev->BlkIo,\r | |
762 | &FdcDev->BlkIo\r | |
763 | );\r | |
764 | \r | |
765 | if (EFI_ERROR (Status)) {\r | |
766 | return Status;\r | |
767 | }\r | |
768 | }\r | |
769 | \r | |
770 | return EFI_SUCCESS;\r | |
771 | }\r | |
772 | \r | |
bcd70414 | 773 | /**\r |
d6321d6e | 774 | Set the data rate and so on.\r |
0a6f4824 | 775 | \r |
d6321d6e | 776 | @param FdcDev A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 777 | \r |
778 | @retval EFI_SUCCESS success to set the data rate\r | |
779 | **/\r | |
11f43dfd | 780 | EFI_STATUS\r |
781 | Setup (\r | |
782 | IN FDC_BLK_IO_DEV *FdcDev\r | |
783 | )\r | |
11f43dfd | 784 | {\r |
785 | EFI_STATUS Status;\r | |
786 | \r | |
787 | //\r | |
788 | // Set data rate 500kbs\r | |
789 | //\r | |
790 | FdcWritePort (FdcDev, FDC_REGISTER_CCR, 0x0);\r | |
791 | \r | |
792 | //\r | |
793 | // Io delay\r | |
794 | //\r | |
795 | MicroSecondDelay (50);\r | |
796 | \r | |
797 | Status = Specify (FdcDev);\r | |
798 | \r | |
799 | if (EFI_ERROR (Status)) {\r | |
800 | return EFI_DEVICE_ERROR;\r | |
801 | }\r | |
802 | \r | |
803 | return EFI_SUCCESS;\r | |
804 | }\r | |
805 | \r | |
bcd70414 | 806 | /**\r |
d6321d6e | 807 | Read or Write a number of blocks in the same cylinder.\r |
0a6f4824 | 808 | \r |
d6321d6e | 809 | @param FdcDev A pointer to FDC_BLK_IO_DEV\r |
0a6f4824 | 810 | @param HostAddress device address\r |
bcd70414 | 811 | @param Lba The starting logic block address to read from on the device\r |
812 | @param NumberOfBlocks The number of block wanted to be read or write\r | |
813 | @param Read Operation type: read or write\r | |
0a6f4824 | 814 | \r |
bcd70414 | 815 | @retval EFI_SUCCESS Success operate\r |
816 | \r | |
817 | **/\r | |
11f43dfd | 818 | EFI_STATUS\r |
819 | ReadWriteDataSector (\r | |
820 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
821 | IN VOID *HostAddress,\r | |
822 | IN EFI_LBA Lba,\r | |
823 | IN UINTN NumberOfBlocks,\r | |
824 | IN BOOLEAN Read\r | |
825 | )\r | |
11f43dfd | 826 | {\r |
827 | EFI_STATUS Status;\r | |
828 | FDD_COMMAND_PACKET1 Command;\r | |
829 | FDD_RESULT_PACKET Result;\r | |
830 | UINTN Index;\r | |
831 | UINTN Times;\r | |
832 | UINT8 *CommandPointer;\r | |
833 | \r | |
834 | EFI_PHYSICAL_ADDRESS DeviceAddress;\r | |
835 | EFI_ISA_IO_PROTOCOL *IsaIo;\r | |
836 | UINTN NumberofBytes;\r | |
837 | VOID *Mapping;\r | |
838 | EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r | |
839 | EFI_STATUS Status1;\r | |
840 | UINT8 Channel;\r | |
841 | EFI_ISA_ACPI_RESOURCE *ResourceItem;\r | |
842 | UINT32 Attribute;\r | |
843 | \r | |
844 | Status = Seek (FdcDev, Lba);\r | |
845 | if (EFI_ERROR (Status)) {\r | |
846 | return EFI_DEVICE_ERROR;\r | |
847 | }\r | |
848 | //\r | |
849 | // Map Dma\r | |
850 | //\r | |
851 | IsaIo = FdcDev->IsaIo;\r | |
852 | NumberofBytes = NumberOfBlocks * 512;\r | |
853 | if (Read == READ) {\r | |
854 | Operation = EfiIsaIoOperationSlaveWrite;\r | |
855 | } else {\r | |
856 | Operation = EfiIsaIoOperationSlaveRead;\r | |
857 | }\r | |
858 | \r | |
859 | ResourceItem = IsaIo->ResourceList->ResourceItem;\r | |
860 | Index = 0;\r | |
861 | while (ResourceItem[Index].Type != EfiIsaAcpiResourceEndOfList) {\r | |
862 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceDma) {\r | |
863 | break;\r | |
864 | }\r | |
865 | \r | |
866 | Index++;\r | |
867 | }\r | |
868 | \r | |
869 | if (ResourceItem[Index].Type == EfiIsaAcpiResourceEndOfList) {\r | |
870 | return EFI_DEVICE_ERROR;\r | |
871 | }\r | |
872 | \r | |
873 | Channel = (UINT8) IsaIo->ResourceList->ResourceItem[Index].StartRange;\r | |
874 | Attribute = IsaIo->ResourceList->ResourceItem[Index].Attribute;\r | |
875 | \r | |
876 | Status1 = IsaIo->Map (\r | |
877 | IsaIo,\r | |
878 | Operation,\r | |
879 | Channel,\r | |
880 | Attribute,\r | |
881 | HostAddress,\r | |
882 | &NumberofBytes,\r | |
883 | &DeviceAddress,\r | |
884 | &Mapping\r | |
885 | );\r | |
886 | if (EFI_ERROR (Status1)) {\r | |
887 | return Status1;\r | |
888 | }\r | |
889 | \r | |
890 | //\r | |
891 | // Allocate Read or Write command packet\r | |
892 | //\r | |
893 | ZeroMem (&Command, sizeof (FDD_COMMAND_PACKET1));\r | |
894 | if (Read == READ) {\r | |
895 | Command.CommandCode = READ_DATA_CMD | CMD_MT | CMD_MFM | CMD_SK;\r | |
896 | } else {\r | |
897 | Command.CommandCode = WRITE_DATA_CMD | CMD_MT | CMD_MFM;\r | |
898 | }\r | |
899 | \r | |
900 | FillPara (FdcDev, Lba, &Command);\r | |
901 | \r | |
902 | //\r | |
903 | // Write command bytes to FDC\r | |
904 | //\r | |
905 | CommandPointer = (UINT8 *) (&Command);\r | |
906 | for (Index = 0; Index < sizeof (FDD_COMMAND_PACKET1); Index++) {\r | |
907 | if (EFI_ERROR (DataOutByte (FdcDev, CommandPointer++))) {\r | |
908 | return EFI_DEVICE_ERROR;\r | |
909 | }\r | |
910 | }\r | |
911 | //\r | |
912 | // wait for some time\r | |
913 | //\r | |
914 | Times = (STALL_1_SECOND / 50) + 1;\r | |
915 | do {\r | |
916 | if ((FdcReadPort (FdcDev, FDC_REGISTER_MSR) & 0xc0) == 0xc0) {\r | |
917 | break;\r | |
918 | }\r | |
919 | \r | |
920 | MicroSecondDelay (50);\r | |
921 | Times = Times - 1;\r | |
2101c62a | 922 | } while (Times > 0);\r |
11f43dfd | 923 | \r |
924 | if (Times == 0) {\r | |
925 | return EFI_TIMEOUT;\r | |
926 | }\r | |
927 | //\r | |
928 | // Read result bytes from FDC\r | |
929 | //\r | |
930 | CommandPointer = (UINT8 *) (&Result);\r | |
931 | for (Index = 0; Index < sizeof (FDD_RESULT_PACKET); Index++) {\r | |
932 | if (EFI_ERROR (DataInByte (FdcDev, CommandPointer++))) {\r | |
933 | return EFI_DEVICE_ERROR;\r | |
934 | }\r | |
935 | }\r | |
936 | //\r | |
937 | // Flush before Unmap\r | |
938 | //\r | |
939 | if (Read == READ) {\r | |
940 | Status1 = IsaIo->Flush (IsaIo);\r | |
941 | if (EFI_ERROR (Status1)) {\r | |
942 | return Status1;\r | |
943 | }\r | |
944 | }\r | |
945 | //\r | |
946 | // Unmap Dma\r | |
947 | //\r | |
948 | Status1 = IsaIo->Unmap (IsaIo, Mapping);\r | |
949 | if (EFI_ERROR (Status1)) {\r | |
950 | return Status1;\r | |
951 | }\r | |
952 | \r | |
953 | return CheckResult (&Result, FdcDev);\r | |
954 | }\r | |
955 | \r | |
bcd70414 | 956 | /**\r |
d6321d6e | 957 | Fill in FDD command's parameter.\r |
0a6f4824 | 958 | \r |
bcd70414 | 959 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
960 | @param Lba The starting logic block address to read from on the device\r | |
961 | @param Command FDD command\r | |
962 | \r | |
963 | **/\r | |
11f43dfd | 964 | VOID\r |
965 | FillPara (\r | |
966 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
967 | IN EFI_LBA Lba,\r | |
968 | IN FDD_COMMAND_PACKET1 *Command\r | |
969 | )\r | |
11f43dfd | 970 | {\r |
971 | UINT8 EndOfTrack;\r | |
972 | \r | |
973 | //\r | |
974 | // Get EndOfTrack from the Para table\r | |
975 | //\r | |
976 | EndOfTrack = DISK_1440K_EOT;\r | |
977 | \r | |
978 | //\r | |
979 | // Fill the command parameter\r | |
980 | //\r | |
d6321d6e | 981 | if (FdcDev->Disk == FdcDisk0) {\r |
11f43dfd | 982 | Command->DiskHeadSel = 0;\r |
983 | } else {\r | |
984 | Command->DiskHeadSel = 1;\r | |
985 | }\r | |
986 | \r | |
987 | Command->Cylinder = (UINT8) ((UINTN) Lba / EndOfTrack / 2);\r | |
988 | Command->Head = (UINT8) ((UINTN) Lba / EndOfTrack % 2);\r | |
989 | Command->Sector = (UINT8) ((UINT8) ((UINTN) Lba % EndOfTrack) + 1);\r | |
990 | Command->DiskHeadSel = (UINT8) (Command->DiskHeadSel | (Command->Head << 2));\r | |
991 | Command->Number = DISK_1440K_NUMBER;\r | |
992 | Command->EndOfTrack = DISK_1440K_EOT;\r | |
993 | Command->GapLength = DISK_1440K_GPL;\r | |
994 | Command->DataLength = DISK_1440K_DTL;\r | |
995 | }\r | |
996 | \r | |
bcd70414 | 997 | /**\r |
d6321d6e | 998 | Read result byte from Data Register of FDC.\r |
0a6f4824 | 999 | \r |
d6321d6e | 1000 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
1001 | @param Pointer Buffer to store the byte read from FDC\r | |
0a6f4824 | 1002 | \r |
d6321d6e | 1003 | @retval EFI_SUCCESS Read result byte from FDC successfully\r |
1004 | @retval EFI_DEVICE_ERROR The FDC is not ready to be read\r | |
bcd70414 | 1005 | \r |
1006 | **/\r | |
11f43dfd | 1007 | EFI_STATUS\r |
1008 | DataInByte (\r | |
d6321d6e | 1009 | IN FDC_BLK_IO_DEV *FdcDev,\r |
1010 | OUT UINT8 *Pointer\r | |
11f43dfd | 1011 | )\r |
11f43dfd | 1012 | {\r |
d6321d6e | 1013 | UINT8 Data;\r |
11f43dfd | 1014 | \r |
1015 | //\r | |
1016 | // wait for 1ms and detect the FDC is ready to be read\r | |
1017 | //\r | |
1018 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_IN, 1))) {\r | |
1019 | return EFI_DEVICE_ERROR;\r | |
1020 | //\r | |
1021 | // is not ready\r | |
1022 | //\r | |
1023 | }\r | |
1024 | \r | |
d6321d6e | 1025 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DTR);\r |
11f43dfd | 1026 | \r |
1027 | //\r | |
1028 | // Io delay\r | |
1029 | //\r | |
1030 | MicroSecondDelay (50);\r | |
1031 | \r | |
d6321d6e | 1032 | *Pointer = Data;\r |
11f43dfd | 1033 | return EFI_SUCCESS;\r |
1034 | }\r | |
1035 | \r | |
bcd70414 | 1036 | /**\r |
d6321d6e | 1037 | Write command byte to Data Register of FDC.\r |
0a6f4824 | 1038 | \r |
bcd70414 | 1039 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
1040 | @param Pointer Be used to save command byte written to FDC\r | |
0a6f4824 | 1041 | \r |
bcd70414 | 1042 | @retval EFI_SUCCESS: Write command byte to FDC successfully\r |
1043 | @retval EFI_DEVICE_ERROR: The FDC is not ready to be written\r | |
1044 | \r | |
1045 | **/\r | |
11f43dfd | 1046 | EFI_STATUS\r |
1047 | DataOutByte (\r | |
1048 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1049 | IN UINT8 *Pointer\r | |
1050 | )\r | |
11f43dfd | 1051 | {\r |
d6321d6e | 1052 | UINT8 Data;\r |
11f43dfd | 1053 | \r |
1054 | //\r | |
1055 | // wait for 1ms and detect the FDC is ready to be written\r | |
1056 | //\r | |
1057 | if (EFI_ERROR (FddDRQReady (FdcDev, DATA_OUT, 1))) {\r | |
11f43dfd | 1058 | //\r |
d6321d6e | 1059 | // Not ready\r |
11f43dfd | 1060 | //\r |
d6321d6e | 1061 | return EFI_DEVICE_ERROR;\r |
11f43dfd | 1062 | }\r |
1063 | \r | |
d6321d6e | 1064 | Data = *Pointer;\r |
11f43dfd | 1065 | \r |
d6321d6e | 1066 | FdcWritePort (FdcDev, FDC_REGISTER_DTR, Data);\r |
11f43dfd | 1067 | \r |
1068 | //\r | |
1069 | // Io delay\r | |
1070 | //\r | |
1071 | MicroSecondDelay (50);\r | |
1072 | \r | |
1073 | return EFI_SUCCESS;\r | |
1074 | }\r | |
1075 | \r | |
bcd70414 | 1076 | /**\r |
d6321d6e | 1077 | Detect the specified floppy logic drive is busy or not within a period of time.\r |
0a6f4824 | 1078 | \r |
fdb05fa3 | 1079 | @param FdcDev Indicate it is drive A or drive B\r |
e9bf5b1d | 1080 | @param Timeout The time period for waiting\r |
0a6f4824 | 1081 | \r |
bcd70414 | 1082 | @retval EFI_SUCCESS: The drive and command are not busy\r |
1083 | @retval EFI_TIMEOUT: The drive or command is still busy after a period time that\r | |
e9bf5b1d | 1084 | set by Timeout\r |
bcd70414 | 1085 | \r |
1086 | **/\r | |
11f43dfd | 1087 | EFI_STATUS\r |
1088 | FddWaitForBSYClear (\r | |
1089 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
e9bf5b1d | 1090 | IN UINTN Timeout\r |
11f43dfd | 1091 | )\r |
11f43dfd | 1092 | {\r |
1093 | UINTN Delay;\r | |
1094 | UINT8 StatusRegister;\r | |
1095 | UINT8 Mask;\r | |
1096 | \r | |
1097 | //\r | |
1098 | // How to determine drive and command are busy or not: by the bits of\r | |
1099 | // Main Status Register\r | |
1100 | // bit0: Drive 0 busy (drive A)\r | |
1101 | // bit1: Drive 1 busy (drive B)\r | |
1102 | // bit4: Command busy\r | |
1103 | //\r | |
1104 | //\r | |
1105 | // set mask: for drive A set bit0 & bit4; for drive B set bit1 & bit4\r | |
1106 | //\r | |
d6321d6e | 1107 | Mask = (UINT8) ((FdcDev->Disk == FdcDisk0 ? MSR_DAB : MSR_DBB) | MSR_CB);\r |
11f43dfd | 1108 | \r |
e9bf5b1d | 1109 | Delay = ((Timeout * STALL_1_MSECOND) / 50) + 1;\r |
11f43dfd | 1110 | do {\r |
1111 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1112 | if ((StatusRegister & Mask) == 0x00) {\r | |
1113 | break;\r | |
1114 | //\r | |
1115 | // not busy\r | |
1116 | //\r | |
1117 | }\r | |
1118 | \r | |
1119 | MicroSecondDelay (50);\r | |
1120 | Delay = Delay - 1;\r | |
2101c62a | 1121 | } while (Delay > 0);\r |
11f43dfd | 1122 | \r |
1123 | if (Delay == 0) {\r | |
1124 | return EFI_TIMEOUT;\r | |
1125 | }\r | |
1126 | \r | |
1127 | return EFI_SUCCESS;\r | |
1128 | }\r | |
1129 | \r | |
bcd70414 | 1130 | /**\r |
e9bf5b1d | 1131 | Determine whether FDC is ready to write or read.\r |
0a6f4824 | 1132 | \r |
bcd70414 | 1133 | @param FdcDev Pointer to instance of FDC_BLK_IO_DEV\r |
1134 | @param Dio BOOLEAN: Indicate the FDC is waiting to write or read\r | |
e9bf5b1d | 1135 | @param Timeout The time period for waiting\r |
0a6f4824 | 1136 | \r |
bcd70414 | 1137 | @retval EFI_SUCCESS: FDC is ready to write or read\r |
1138 | @retval EFI_NOT_READY: FDC is not ready within the specified time period\r | |
1139 | \r | |
1140 | **/\r | |
11f43dfd | 1141 | EFI_STATUS\r |
1142 | FddDRQReady (\r | |
1143 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1144 | IN BOOLEAN Dio,\r | |
e9bf5b1d | 1145 | IN UINTN Timeout\r |
11f43dfd | 1146 | )\r |
11f43dfd | 1147 | {\r |
1148 | UINTN Delay;\r | |
1149 | UINT8 StatusRegister;\r | |
1150 | UINT8 DataInOut;\r | |
1151 | \r | |
1152 | //\r | |
1153 | // Before writing to FDC or reading from FDC, the Host must examine\r | |
1154 | // the bit7(RQM) and bit6(DIO) of the Main Status Register.\r | |
1155 | // That is to say:\r | |
1156 | // command bytes can not be written to Data Register\r | |
1157 | // unless RQM is 1 and DIO is 0\r | |
1158 | // result bytes can not be read from Data Register\r | |
1159 | // unless RQM is 1 and DIO is 1\r | |
1160 | //\r | |
1161 | DataInOut = (UINT8) (Dio << 6);\r | |
1162 | //\r | |
1163 | // in order to compare bit6\r | |
1164 | //\r | |
e9bf5b1d | 1165 | Delay = ((Timeout * STALL_1_MSECOND) / 50) + 1;\r |
11f43dfd | 1166 | do {\r |
1167 | StatusRegister = FdcReadPort (FdcDev, FDC_REGISTER_MSR);\r | |
1168 | if ((StatusRegister & MSR_RQM) == MSR_RQM && (StatusRegister & MSR_DIO) == DataInOut) {\r | |
1169 | break;\r | |
1170 | //\r | |
1171 | // FDC is ready\r | |
1172 | //\r | |
1173 | }\r | |
1174 | \r | |
1175 | MicroSecondDelay (50);\r | |
1176 | //\r | |
1177 | // Stall for 50 us\r | |
1178 | //\r | |
1179 | Delay = Delay - 1;\r | |
61efb259 | 1180 | } while (Delay > 0);\r |
11f43dfd | 1181 | \r |
1182 | if (Delay == 0) {\r | |
1183 | return EFI_NOT_READY;\r | |
1184 | //\r | |
1185 | // FDC is not ready within the specified time period\r | |
1186 | //\r | |
1187 | }\r | |
1188 | \r | |
1189 | return EFI_SUCCESS;\r | |
1190 | }\r | |
1191 | \r | |
bcd70414 | 1192 | /**\r |
0a6f4824 | 1193 | Set FDC control structure's attribute according to result.\r |
bcd70414 | 1194 | \r |
1195 | @param Result Point to result structure\r | |
1196 | @param FdcDev FDC control structure\r | |
1197 | \r | |
fdb05fa3 | 1198 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r |
1199 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1200 | @retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
1201 | @retval EFI_SUCCESS - GC_TODO: Add description for return value\r | |
bcd70414 | 1202 | \r |
1203 | **/\r | |
11f43dfd | 1204 | EFI_STATUS\r |
1205 | CheckResult (\r | |
1206 | IN FDD_RESULT_PACKET *Result,\r | |
1207 | IN OUT FDC_BLK_IO_DEV *FdcDev\r | |
1208 | )\r | |
11f43dfd | 1209 | {\r |
1210 | //\r | |
1211 | // Check Status Register0\r | |
1212 | //\r | |
1213 | if ((Result->Status0 & STS0_IC) != IC_NT) {\r | |
1214 | if ((Result->Status0 & STS0_SE) == 0x20) {\r | |
1215 | //\r | |
1216 | // seek error\r | |
1217 | //\r | |
1218 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1219 | }\r | |
1220 | \r | |
1221 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r | |
1222 | return EFI_DEVICE_ERROR;\r | |
1223 | }\r | |
1224 | //\r | |
1225 | // Check Status Register1\r | |
1226 | //\r | |
d6321d6e | 1227 | if ((Result->Status1 & (STS1_EN | STS1_DE | STS1_OR | STS1_ND | STS1_NW | STS1_MA)) != 0) {\r |
11f43dfd | 1228 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r |
1229 | return EFI_DEVICE_ERROR;\r | |
1230 | }\r | |
1231 | //\r | |
1232 | // Check Status Register2\r | |
1233 | //\r | |
d6321d6e | 1234 | if ((Result->Status2 & (STS2_CM | STS2_DD | STS2_WC | STS2_BC | STS2_MD)) != 0) {\r |
11f43dfd | 1235 | FdcDev->ControllerState->NeedRecalibrate = TRUE;\r |
1236 | return EFI_DEVICE_ERROR;\r | |
1237 | }\r | |
1238 | \r | |
1239 | return EFI_SUCCESS;\r | |
1240 | }\r | |
1241 | \r | |
bcd70414 | 1242 | /**\r |
d6321d6e | 1243 | Check the drive status information.\r |
0a6f4824 | 1244 | \r |
bcd70414 | 1245 | @param StatusRegister3 the value of Status Register 3\r |
0a6f4824 | 1246 | \r |
bcd70414 | 1247 | @retval EFI_SUCCESS The disk is not write protected\r |
1248 | @retval EFI_WRITE_PROTECTED: The disk is write protected\r | |
1249 | \r | |
1250 | **/\r | |
11f43dfd | 1251 | EFI_STATUS\r |
1252 | CheckStatus3 (\r | |
1253 | IN UINT8 StatusRegister3\r | |
1254 | )\r | |
11f43dfd | 1255 | {\r |
d6321d6e | 1256 | if ((StatusRegister3 & STS3_WP) != 0) {\r |
11f43dfd | 1257 | return EFI_WRITE_PROTECTED;\r |
1258 | }\r | |
1259 | \r | |
1260 | return EFI_SUCCESS;\r | |
1261 | }\r | |
1262 | \r | |
bcd70414 | 1263 | /**\r |
d6321d6e | 1264 | Calculate the number of block in the same cylinder according to LBA.\r |
0a6f4824 | 1265 | \r |
d6321d6e | 1266 | @param FdcDev FDC_BLK_IO_DEV *: A pointer to FDC_BLK_IO_DEV\r |
bcd70414 | 1267 | @param LBA EFI_LBA: The starting logic block address\r |
1268 | @param NumberOfBlocks UINTN: The number of blocks\r | |
0a6f4824 | 1269 | \r |
bcd70414 | 1270 | @return The number of blocks in the same cylinder which the starting\r |
1271 | logic block address is LBA\r | |
1272 | \r | |
1273 | **/\r | |
11f43dfd | 1274 | UINTN\r |
1275 | GetTransferBlockCount (\r | |
1276 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1277 | IN EFI_LBA LBA,\r | |
1278 | IN UINTN NumberOfBlocks\r | |
1279 | )\r | |
11f43dfd | 1280 | {\r |
1281 | UINT8 EndOfTrack;\r | |
1282 | UINT8 Head;\r | |
1283 | UINT8 SectorsInTrack;\r | |
1284 | \r | |
1285 | //\r | |
1286 | // Calculate the number of block in the same cylinder\r | |
1287 | //\r | |
1288 | EndOfTrack = DISK_1440K_EOT;\r | |
1289 | Head = (UINT8) ((UINTN) LBA / EndOfTrack % 2);\r | |
1290 | \r | |
1291 | SectorsInTrack = (UINT8) (EndOfTrack * (2 - Head) - (UINT8) ((UINTN) LBA % EndOfTrack));\r | |
1292 | if (SectorsInTrack < NumberOfBlocks) {\r | |
1293 | return SectorsInTrack;\r | |
1294 | } else {\r | |
1295 | return NumberOfBlocks;\r | |
1296 | }\r | |
1297 | }\r | |
1298 | \r | |
bcd70414 | 1299 | /**\r |
d6321d6e | 1300 | When the Timer(2s) off, turn the drive's motor off.\r |
0a6f4824 | 1301 | \r |
bcd70414 | 1302 | @param Event EFI_EVENT: Event(the timer) whose notification function is being\r |
1303 | invoked\r | |
1304 | @param Context VOID *: Pointer to the notification function's context\r | |
1305 | \r | |
1306 | **/\r | |
11f43dfd | 1307 | VOID\r |
1308 | EFIAPI\r | |
1309 | FddTimerProc (\r | |
1310 | IN EFI_EVENT Event,\r | |
1311 | IN VOID *Context\r | |
1312 | )\r | |
11f43dfd | 1313 | {\r |
1314 | FDC_BLK_IO_DEV *FdcDev;\r | |
d6321d6e | 1315 | UINT8 Data;\r |
11f43dfd | 1316 | \r |
1317 | FdcDev = (FDC_BLK_IO_DEV *) Context;\r | |
1318 | \r | |
1319 | //\r | |
1320 | // Get the motor status\r | |
1321 | //\r | |
d6321d6e | 1322 | Data = FdcReadPort (FdcDev, FDC_REGISTER_DOR);\r |
11f43dfd | 1323 | \r |
d6321d6e | 1324 | if (((FdcDev->Disk == FdcDisk0) && ((Data & 0x10) != 0x10)) ||\r |
1325 | ((FdcDev->Disk == FdcDisk1) && ((Data & 0x21) != 0x21))\r | |
11f43dfd | 1326 | ) {\r |
1327 | return ;\r | |
1328 | }\r | |
1329 | //\r | |
1330 | // the motor is on, so need motor off\r | |
1331 | //\r | |
d6321d6e | 1332 | Data = 0x0C;\r |
1333 | Data = (UINT8) (Data | (SELECT_DRV & FdcDev->Disk));\r | |
1334 | FdcWritePort (FdcDev, FDC_REGISTER_DOR, Data);\r | |
11f43dfd | 1335 | MicroSecondDelay (500);\r |
1336 | }\r | |
1337 | \r | |
bcd70414 | 1338 | /**\r |
d6321d6e | 1339 | Read an I/O port of FDC.\r |
0a6f4824 | 1340 | \r |
d6321d6e | 1341 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV.\r |
1342 | @param[in] Offset The address offset of the I/O port.\r | |
bcd70414 | 1343 | \r |
d6321d6e | 1344 | @retval 8-bit data read from the I/O port.\r |
bcd70414 | 1345 | **/\r |
11f43dfd | 1346 | UINT8\r |
1347 | FdcReadPort (\r | |
1348 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1349 | IN UINT32 Offset\r | |
1350 | )\r | |
11f43dfd | 1351 | {\r |
d6321d6e | 1352 | EFI_STATUS Status;\r |
11f43dfd | 1353 | UINT8 Data;\r |
1354 | \r | |
d6321d6e | 1355 | Status = FdcDev->IsaIo->Io.Read (\r |
1356 | FdcDev->IsaIo,\r | |
1357 | EfiIsaIoWidthUint8,\r | |
1358 | FdcDev->BaseAddress + Offset,\r | |
1359 | 1,\r | |
1360 | &Data\r | |
1361 | );\r | |
1362 | ASSERT_EFI_ERROR (Status);\r | |
11f43dfd | 1363 | \r |
1364 | return Data;\r | |
1365 | }\r | |
1366 | \r | |
bcd70414 | 1367 | /**\r |
d6321d6e | 1368 | Write an I/O port of FDC.\r |
0a6f4824 | 1369 | \r |
d6321d6e | 1370 | @param[in] FdcDev A pointer to FDC_BLK_IO_DEV\r |
1371 | @param[in] Offset The address offset of the I/O port\r | |
1372 | @param[in] Data 8-bit Value written to the I/O port\r | |
bcd70414 | 1373 | **/\r |
11f43dfd | 1374 | VOID\r |
1375 | FdcWritePort (\r | |
1376 | IN FDC_BLK_IO_DEV *FdcDev,\r | |
1377 | IN UINT32 Offset,\r | |
1378 | IN UINT8 Data\r | |
1379 | )\r | |
11f43dfd | 1380 | {\r |
d6321d6e | 1381 | EFI_STATUS Status;\r |
11f43dfd | 1382 | \r |
d6321d6e | 1383 | Status = FdcDev->IsaIo->Io.Write (\r |
1384 | FdcDev->IsaIo,\r | |
1385 | EfiIsaIoWidthUint8,\r | |
1386 | FdcDev->BaseAddress + Offset,\r | |
1387 | 1,\r | |
1388 | &Data\r | |
1389 | );\r | |
1390 | ASSERT_EFI_ERROR (Status);\r | |
11f43dfd | 1391 | }\r |
bcd70414 | 1392 | \r |