reactos/drivers/storage/floppy/hardware.h

   1 /*
   2  *  ReactOS Floppy Driver
   3  *  Copyright (C) 2004, Vizzini (vizzini@plasmic.com)
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * PROJECT:         ReactOS Floppy Driver
  20  * FILE:            hardware.h
  21  * PURPOSE:         Header for FDC control routines
  22  * PROGRAMMER:      Vizzini (vizzini@plasmic.com)
  23  * REVISIONS:
  24  *                  15-Feb-2004 vizzini - Created
  25  *
  26  * NOTES:
  27  *     - Baesd on http://www.nondot.org/sabre/os/files/Disk/FLOPPY.TXT
  28  *     - Some information taken from Intel 82077AA data sheet (order #290166-007)
  29  *     - Some definitions are PS/2-Specific; others include the original NEC PD765
  30  *     - Other information gathered from the comments in the NT 3.5 floppy driver
  31  *
  32  * TODO:
  33  *     - Convert these numbers to 100% absolute values; eliminate bit positions
  34  *       in favor of shifts or bitfields
  35  */
  36
  37 #define FLOPPY_DEFAULT_IRQ              0x6
  38 #define FDC_PORT_BYTES                  0x8
  39
  40 /* Register offsets from base address (usually 0x3f8)  */
  41 #define STATUS_REGISTER_A               0x0 /* Read; PS/2 Only */
  42 #define STATUS_REGISTER_B               0x1 /* Read; PS/2 Only */
  43 #define DIGITAL_OUTPUT_REGISTER         0x2 /* Read/Write */
  44 #define TAPE_DRIVE_REGISTER             0x3 /* Read/Write */
  45 #define MAIN_STATUS_REGISTER            0x4 /* Read */
  46 #define DATA_RATE_SELECT_REGISTER       0x4 /* Write */
  47 #define FIFO                            0x5 /* Read/Write */
  48 #define RESERVED_REGISTER               0x6 /* Reserved */
  49 #define DIGITAL_INPUT_REGISTER          0x7 /* Read; PS/2 Only */
  50 #define CONFIGURATION_CONTROL_REGISTER  0x7 /* Write; PS/2 Only */
  51
  52 /* STATUS_REGISTER_A */
  53 #define DSRA_DIRECTION                  0x1
  54 #define DSRA_WRITE_PROTECT              0x2
  55 #define DSRA_INDEX                      0x4
  56 #define DSRA_HEAD_1_SELECT              0x8
  57 #define DSRA_TRACK_0                    0x10
  58 #define DSRA_STEP                       0x20
  59 #define DSRA_SECOND_DRIVE_INSTALLED     0x40
  60 #define DSRA_INTERRUPT_PENDING          0x80
  61
  62 /* STATUS_REGISTER_B */
  63 #define DSRB_MOTOR_ENABLE_0             0x1
  64 #define DSRB_MOTOR_ENABLE_1             0x2
  65 #define DSRB_WRITE_ENABLE               0x4
  66 #define DSRB_READ_DATA                  0x8
  67 #define DSRB_WRTITE_DATA                0x10
  68 #define DSRB_DRIVE_SELECT               0x20
  69
  70 /* DIGITAL_OUTPUT_REGISTER */
  71 #define DOR_FLOPPY_DRIVE_SELECT         0x3 /* Covers 2 bits, defined below */
  72 #define DOR_FDC_ENABLE                  0x4 /* from the website */
  73 #define DOR_RESET                       0x4 /* from the Intel guide; 0 = resetting, 1 = enabled */
  74 #define DOR_DMA_IO_INTERFACE_ENABLE     0x8 /* Reserved on PS/2 */
  75 #define DOR_FLOPPY_MOTOR_ON_A           0x10
  76 #define DOR_FLOPPY_MOTOR_ON_B           0x20
  77 #define DOR_FLOPPY_MOTOR_ON_C           0x40 /* Reserved on PS/2 */
  78 #define DOR_FLOPPY_MOTOR_ON_D           0x80 /* Reserved on PS/2 */
  79
  80 /* DOR_FLOPPY_DRIVE_SELECT */
  81 #define DOR_FLOPPY_DRIVE_SELECT_A       0x0
  82 #define DOR_FLOPPY_DRIVE_SELECT_B       0x1
  83 #define DOR_FLOPPY_DRIVE_SELECT_C       0x2 /* Reserved on PS/2 */
  84 #define DOR_FLOPPY_DRIVE_SELECT_D       0x3 /* Reserved on PS/2 */
  85
  86 /* MAIN_STATUS_REGISTER */
  87 #define MSR_FLOPPY_BUSY_0               0x1
  88 #define MSR_FLOPPY_BUSY_1               0x2
  89 #define MSR_FLOPPY_BUSY_2               0x4 /* Reserved on PS/2 */
  90 #define MSR_FLOPPY_BUSY_3               0x8 /* Reserved on PS/2 */
  91 #define MSR_READ_WRITE_IN_PROGRESS      0x10
  92 #define MSR_NON_DMA_MODE                0x20
  93 #define MSR_IO_DIRECTION                0x40 /* Determines meaning of Command Status Registers */
  94 #define MSR_DATA_REG_READY_FOR_IO       0x80
  95
  96 /* DATA_RATE_SELECT_REGISTER */
  97 #define DRSR_DSEL                       0x3 /* covers two bits as defined below */
  98 #define DRSR_PRECOMP                    0x1c /* covers three bits as defined below */
  99 #define DRSR_MBZ                        0x20
 100 #define DRSR_POWER_DOWN                 0x40
 101 #define DRSR_SW_RESET                   0x80
 102
 103 /* DRSR_DSEL */
 104 #define DRSR_DSEL_500KBPS               0x0
 105 #define DRSR_DSEL_300KBPS               0x1
 106 #define DRSR_DSEL_250KBPS               0x2
 107 #define DRSR_DSEL_1MBPS                 0x3
 108
 109 /* STATUS_REGISTER_0 */
 110 #define SR0_UNIT_SELECTED_AT_INTERRUPT  0x3 /* Covers two bits as defined below */
 111 #define SR0_HEAD_NUMBER_AT_INTERRUPT    0x4 /* Values defined below */
 112 #define SR0_NOT_READY_ON_READ_WRITE     0x8 /* Unused in PS/2 */
 113 #define SR0_SS_ACCESS_TO_HEAD_1         0x8 /* Unused in PS/2 */
 114 #define SR0_EQUIPMENT_CHECK             0x10
 115 #define SR0_SEEK_COMPLETE               0x20
 116 #define SR0_LAST_COMMAND_STATUS         0xC0 /* Covers two bits as defined below */
 117
 118 /* SR0_UNIT_SELECTED_AT_INTERRUPT */
 119 #define SR0_UNIT_SELECTED_A             0x0
 120 #define SR0_UNIT_SELECTED_B             0x1
 121 #define SR0_UNIT_SELECTED_C             0x2
 122 #define SR0_UNIT_SELECTED_D             0x3
 123 #define SR0_PS2_UNIT_SELECTED_A         0x1 /* PS/2 uses only two drives: A = 01b  B = 10b */
 124 #define SR0_PST_UNIT_SELECTED_B         0x2
 125
 126 /* SR0_HEAD_NUMBER_AT_INTERRUPT */
 127 #define SR0_HEAD_0                      0x0
 128 #define SR0_HEAD_1                      0x1
 129
 130 /* SR0_LAST_COMMAND_STATUS */
 131 #define SR0_LCS_SUCCESS                 0x0
 132 #define SR0_LCS_TERMINATED_ABNORMALLY   0x40
 133 #define SR0_LCS_INVALID_COMMAND_ISSUED  0x80
 134 #define SR0_LCS_READY_SIGNAL_CHANGED    0xc0 /* Reserved on PS/2; a/k/a abnormal termination due to polling */
 135
 136 /* STATUS_REGISTER_1 */
 137 #define SR1_CANNOT_FIND_ID_ADDRESS      0x1 /* Mimics SR2_WRONG_CYLINDER_DETECTED */
 138 #define SR1_WRITE_PROTECT_DETECTED      0x2
 139 #define SR1_CANNOT_FIND_SECTOR_ID       0x4
 140 #define SR1_OVERRUN                     0x10
 141 #define SR1_CRC_ERROR                   0x20
 142 #define SR1_END_OF_CYLINDER             0x80
 143
 144 /* STATUS_REGISTER_2 */
 145 #define SR2_MISSING_ADDRESS_MARK        0x1
 146 #define SR2_BAD_CYLINDER                0x2
 147 #define SR2_SCAN_COMMAND_FAILED         0x4
 148 #define SR2_SCAN_COMMAND_EQUAL          0x8
 149 #define SR2_WRONG_CYLINDER_DETECTED     0x10 /* Mimics SR1_CANNOT_FIND_ID_ADDRESS */
 150 #define SR2_CRC_ERROR_IN_SECTOR_DATA    0x20
 151 #define SR2_SECTOR_WITH_DELETED_DATA    0x40
 152
 153 /* STATUS_REGISTER_3 */
 154 #define SR3_UNIT_SELECTED               0x3 /* Covers two bits; defined below */
 155 #define SR3_SIDE_HEAD_SELECT_STATUS     0x4 /* Values defined below */
 156 #define SR3_TWO_SIDED_STATUS_SIGNAL     0x8
 157 #define SR3_TRACK_ZERO_STATUS_SIGNAL    0x10
 158 #define SR3_READY_STATUS_SIGNAL         0x20
 159 #define SR3_WRITE_PROTECT_STATUS_SIGNAL 0x40
 160 #define SR3_FAULT_STATUS_SIGNAL         0x80
 161
 162 /* SR3_UNIT_SELECTED */
 163 #define SR3_UNIT_SELECTED_A             0x0
 164 #define SR3_UNIT_SELECTED_B             0x1
 165 #define SR3_UNIT_SELECTED_C             0x2
 166 #define SR3_UNIT_SELECTED_D             0x3
 167
 168 /* SR3_SIDE_HEAD_SELECT_STATUS */
 169 #define SR3_SHSS_HEAD_0                 0x0
 170 #define SR3_SHSS_HEAD_1                 0x1
 171
 172 /* DIGITAL_INPUT_REGISTER */
 173 #define DIR_HIGH_DENSITY_SELECT         0x1
 174 #define DIR_DISKETTE_CHANGE             0x80
 175
 176 /* CONFIGURATION_CONTROL_REGISTER */
 177 #define CCR_DRC                         0x3 /* Covers two bits, defined below */
 178 #define CCR_DRC_0                       0x1
 179 #define CCR_DRC_1                       0x2
 180
 181 /* CCR_DRC */
 182 #define CCR_DRC_500000                  0x0
 183 #define CCR_DRC_250000                  0x2
 184
 185 /* Commands */
 186 #define COMMAND_READ_TRACK              0x2
 187 #define COMMAND_SPECIFY                 0x3
 188 #define COMMAND_SENSE_DRIVE_STATUS      0x4
 189 #define COMMAND_WRITE_DATA              0x5
 190 #define COMMAND_READ_DATA               0x6
 191 #define COMMAND_RECALIBRATE             0x7
 192 #define COMMAND_SENSE_INTERRUPT_STATUS  0x8
 193 #define COMMAND_WRITE_DELETED_DATA      0x9
 194 #define COMMAND_READ_ID                 0xA
 195 #define COMMAND_READ_DELETED_DATA       0xC
 196 #define COMMAND_FORMAT_TRACK            0xD
 197 #define COMMAND_SEEK                    0xF
 198 #define COMMAND_VERSION                 0x10
 199 #define COMMAND_SCAN_EQUAL              0x11
 200 #define COMMAND_CONFIGURE               0x13
 201 #define COMMAND_SCAN_LOW_OR_EQUAL       0x19
 202 #define COMMAND_SCAN_HIGH_OR_EQUAL      0x1D
 203
 204 /* COMMAND_READ_DATA constants */
 205 #define READ_DATA_DS0                   0x1
 206 #define READ_DATA_DS1                   0x2
 207 #define READ_DATA_HDS                   0x4
 208 #define READ_DATA_SK                    0x20
 209 #define READ_DATA_MFM                   0x40
 210 #define READ_DATA_MT                    0x80
 211
 212 /* COMMAND_READ_ID constants */
 213 #define READ_ID_MFM                     0x40
 214
 215 /* COMMAND_SPECIFY constants */
 216 #define SPECIFY_HLT_1M                  0x10  /* 16ms; based on intel data sheet */
 217 #define SPECIFY_HLT_500K                0x8   /* 16ms; based on intel data sheet */
 218 #define SPECIFY_HLT_300K                0x6   /* 16ms; based on intel data sheet */
 219 #define SPECIFY_HLT_250K                0x4   /* 16ms; based on intel data sheet */
 220 #define SPECIFY_HUT_1M                  0x0   /* Need to figure out these eight values; 0 is max */
 221 #define SPECIFY_HUT_500K                0x0
 222 #define SPECIFY_HUT_300K                0x0
 223 #define SPECIFY_HUT_250K                0x0
 224 #define SPECIFY_SRT_1M                  0x0
 225 #define SPECIFY_SRT_500K                0x0
 226 #define SPECIFY_SRT_300K                0x0
 227 #define SPECIFY_SRT_250K                0x0
 228
 229 /* Command byte 1 constants */
 230 #define COMMAND_UNIT_SELECT             0x3 /* Covers two bits; defined below */
 231 #define COMMAND_UNIT_SELECT_0           0x1
 232 #define COMMAND_UNIT_SELECT_1           0x2
 233 #define COMMAND_HEAD_NUMBER             0x4
 234 #define COMMAND_HEAD_NUMBER_SHIFT       0x2
 235
 236 /* COMMAND_VERSION */
 237 #define VERSION_ENHANCED                0x90
 238
 239 /* COMMAND_UNIT_SELECT */
 240 #define CUS_UNIT_0                      0x0
 241 #define CUS_UNIT_1                      0x1
 242
 243 /* COMMAND_CONFIGURE constants */
 244 #define CONFIGURE_FIFOTHR               0xf
 245 #define CONFIGURE_POLL                  0x10
 246 #define CONFIGURE_EFIFO                 0x20
 247 #define CONFIGURE_EIS                   0x40
 248 #define CONFIGURE_PRETRK                0xff
 249
 250 /* Command Head Number Constants */
 251 #define COMMAND_HEAD_0                  0x0
 252 #define COMMAND_HEAD_1                  0x1
 253
 254 /* Bytes per sector constants */
 255 #define HW_128_BYTES_PER_SECTOR         0x0
 256 #define HW_256_BYTES_PER_SECTOR         0x1
 257 #define HW_512_BYTES_PER_SECTOR         0x2
 258 #define HW_1024_BYTES_PER_SECTOR        0x3
 259
 260 /*
 261  * FUNCTIONS
 262  */
 263 NTSTATUS NTAPI HwTurnOnMotor(PDRIVE_INFO DriveInfo);
 264
 265 NTSTATUS NTAPI HwSenseDriveStatus(PDRIVE_INFO DriveInfo);
 266
 267 NTSTATUS NTAPI HwReadWriteData(PCONTROLLER_INFO ControllerInfo,
 268                                BOOLEAN Read,
 269                                UCHAR Unit,
 270                                UCHAR Cylinder,
 271                                UCHAR Head,
 272                                UCHAR Sector,
 273                                UCHAR BytesPerSector,
 274                                UCHAR EndOfTrack,
 275                                UCHAR Gap3Length,
 276                                UCHAR DataLength);
 277
 278 NTSTATUS NTAPI HwRecalibrate(PDRIVE_INFO DriveInfo);
 279
 280 NTSTATUS NTAPI HwSenseInterruptStatus(PCONTROLLER_INFO ControllerInfo);
 281
 282 NTSTATUS NTAPI HwReadId(PDRIVE_INFO DriveInfo,
 283                         UCHAR Head);
 284
 285 NTSTATUS NTAPI HwFormatTrack(PCONTROLLER_INFO ControllerInfo,
 286                              UCHAR Unit,
 287                              UCHAR Head,
 288                              UCHAR BytesPerSector,
 289                              UCHAR SectorsPerTrack,
 290                              UCHAR Gap3Length,
 291                              UCHAR FillerPattern);
 292
 293 NTSTATUS NTAPI HwSeek(PDRIVE_INFO DriveInfo,
 294                       UCHAR Cylinder);
 295
 296 NTSTATUS NTAPI HwReadWriteResult(PCONTROLLER_INFO ControllerInfo);
 297
 298 NTSTATUS NTAPI HwGetVersion(PCONTROLLER_INFO ControllerInfo);
 299
 300 NTSTATUS NTAPI HwConfigure(PCONTROLLER_INFO ControllerInfo,
 301                            BOOLEAN EIS,
 302                            BOOLEAN EFIFO,
 303                            BOOLEAN POLL,
 304                            UCHAR FIFOTHR,
 305                            UCHAR PRETRK) ;
 306
 307 NTSTATUS NTAPI HwRecalibrateResult(PCONTROLLER_INFO ControllerInfo);
 308
 309 NTSTATUS NTAPI HwDiskChanged(PDRIVE_INFO DriveInfo,
 310                              PBOOLEAN DiskChanged);
 311
 312 NTSTATUS NTAPI HwSenseDriveStatusResult(PCONTROLLER_INFO ControllerInfo,
 313                                         PUCHAR Status);
 314
 315 NTSTATUS NTAPI HwSpecify(PCONTROLLER_INFO ControllerInfo,
 316                          UCHAR HeadLoadTime,
 317                          UCHAR HeadUnloadTime,
 318                          UCHAR StepRateTime,
 319                          BOOLEAN NonDma);
 320
 321 NTSTATUS NTAPI HwReadIdResult(PCONTROLLER_INFO ControllerInfo,
 322                               PUCHAR CurCylinder,
 323                               PUCHAR CurHead);
 324
 325 NTSTATUS NTAPI HwSetDataRate(PCONTROLLER_INFO ControllerInfo,
 326                              UCHAR DataRate);
 327
 328 NTSTATUS NTAPI HwReset(PCONTROLLER_INFO Controller);
 329
 330 NTSTATUS NTAPI HwPowerOff(PCONTROLLER_INFO ControllerInfo);
 331
 332 VOID NTAPI HwDumpRegisters(PCONTROLLER_INFO ControllerInfo);
 333
 334 NTSTATUS NTAPI HwTurnOffMotor(PCONTROLLER_INFO ControllerInfo);
 335