| 1 |
/* |
| 2 |
* disk.cpp - Generic disk driver |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-1999 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
/* |
| 22 |
* SEE ALSO |
| 23 |
* Inside Macintosh: Devices, chapter 1 "Device Manager" |
| 24 |
* Technote DV 05: "Drive Queue Elements" |
| 25 |
* Technote DV 23: "Driver Education" |
| 26 |
* Technote FL 24: "Don't Look at ioPosOffset for Devices" |
| 27 |
*/ |
| 28 |
|
| 29 |
#include <string.h> |
| 30 |
|
| 31 |
#include "sysdeps.h" |
| 32 |
#include "cpu_emulation.h" |
| 33 |
#include "main.h" |
| 34 |
#include "macos_util.h" |
| 35 |
#include "sys.h" |
| 36 |
#include "prefs.h" |
| 37 |
#include "disk.h" |
| 38 |
|
| 39 |
#define DEBUG 0 |
| 40 |
#include "debug.h" |
| 41 |
|
| 42 |
|
| 43 |
// .Disk Disk/drive icon |
| 44 |
const uint8 DiskIcon[258] = { |
| 45 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 46 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 47 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 48 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 49 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xfe, |
| 50 |
0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, |
| 51 |
0x80, 0x00, 0x00, 0x01, 0x8c, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, |
| 52 |
0x7f, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 53 |
|
| 54 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 55 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 56 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 57 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 58 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xfe, |
| 59 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 60 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 61 |
0x7f, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 62 |
|
| 63 |
0, 0 |
| 64 |
}; |
| 65 |
|
| 66 |
|
| 67 |
// Struct for each drive |
| 68 |
struct DriveInfo { |
| 69 |
DriveInfo() |
| 70 |
{ |
| 71 |
next = NULL; |
| 72 |
num = 0; |
| 73 |
fh = NULL; |
| 74 |
read_only = false; |
| 75 |
status = 0; |
| 76 |
} |
| 77 |
|
| 78 |
DriveInfo *next; // Pointer to next DriveInfo (must be first in struct!) |
| 79 |
int num; // Drive number |
| 80 |
void *fh; // File handle |
| 81 |
uint32 num_blocks; // Size in 512-byte blocks |
| 82 |
bool to_be_mounted; // Flag: drive must be mounted in accRun |
| 83 |
bool read_only; // Flag: force write protection |
| 84 |
uint32 status; // Mac address of drive status record |
| 85 |
}; |
| 86 |
|
| 87 |
// Linked list of DriveInfos |
| 88 |
static DriveInfo *first_drive_info; |
| 89 |
|
| 90 |
// Icon address (Mac address space, set by PatchROM()) |
| 91 |
uint32 DiskIconAddr; |
| 92 |
|
| 93 |
// Number of ticks between checks for disk insertion |
| 94 |
const int driver_delay = 120; |
| 95 |
|
| 96 |
// Flag: Control(accRun) has been called, interrupt routine is now active |
| 97 |
static bool acc_run_called = false; |
| 98 |
|
| 99 |
|
| 100 |
/* |
| 101 |
* Get pointer to drive info, NULL = invalid drive number |
| 102 |
*/ |
| 103 |
|
| 104 |
static DriveInfo *get_drive_info(int num) |
| 105 |
{ |
| 106 |
DriveInfo *info = first_drive_info; |
| 107 |
while (info != NULL) { |
| 108 |
if (info->num == num) |
| 109 |
return info; |
| 110 |
info = info->next; |
| 111 |
} |
| 112 |
return NULL; |
| 113 |
} |
| 114 |
|
| 115 |
|
| 116 |
/* |
| 117 |
* Initialization |
| 118 |
*/ |
| 119 |
|
| 120 |
void DiskInit(void) |
| 121 |
{ |
| 122 |
first_drive_info = NULL; |
| 123 |
|
| 124 |
// No drives specified in prefs? Then add defaults |
| 125 |
if (PrefsFindString("disk", 0) == NULL) |
| 126 |
SysAddDiskPrefs(); |
| 127 |
|
| 128 |
// Add drives specified in preferences |
| 129 |
int32 index = 0; |
| 130 |
const char *str; |
| 131 |
while ((str = PrefsFindString("disk", index++)) != NULL) { |
| 132 |
bool read_only = false; |
| 133 |
if (str[0] == '*') { |
| 134 |
read_only = true; |
| 135 |
str++; |
| 136 |
} |
| 137 |
void *fh = Sys_open(str, read_only); |
| 138 |
if (fh) { |
| 139 |
D(bug(" adding drive '%s'\n", str)); |
| 140 |
DriveInfo *info = new DriveInfo; |
| 141 |
info->fh = fh; |
| 142 |
info->read_only = SysIsReadOnly(fh); |
| 143 |
DriveInfo *p = (DriveInfo *)&first_drive_info; |
| 144 |
while (p->next != NULL) |
| 145 |
p = p->next; |
| 146 |
p->next = info; |
| 147 |
} |
| 148 |
} |
| 149 |
} |
| 150 |
|
| 151 |
|
| 152 |
/* |
| 153 |
* Deinitialization |
| 154 |
*/ |
| 155 |
|
| 156 |
void DiskExit(void) |
| 157 |
{ |
| 158 |
DriveInfo *info = first_drive_info, *next; |
| 159 |
while (info != NULL) { |
| 160 |
Sys_close(info->fh); |
| 161 |
next = info->next; |
| 162 |
delete info; |
| 163 |
info = next; |
| 164 |
} |
| 165 |
} |
| 166 |
|
| 167 |
|
| 168 |
/* |
| 169 |
* Disk was inserted, flag for mounting |
| 170 |
*/ |
| 171 |
|
| 172 |
bool DiskMountVolume(void *fh) |
| 173 |
{ |
| 174 |
DriveInfo *info; |
| 175 |
for (info = first_drive_info; info != NULL && info->fh != fh; info = info->next) ; |
| 176 |
if (info) { |
| 177 |
if (SysIsDiskInserted(info->fh)) { |
| 178 |
info->read_only = SysIsReadOnly(info->fh); |
| 179 |
WriteMacInt8(info->status + dsDiskInPlace, 1); // Inserted removable disk |
| 180 |
WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0xff : 0); |
| 181 |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 182 |
WriteMacInt16(info->status + dsDriveSize, info->num_blocks & 0xffff); |
| 183 |
WriteMacInt16(info->status + dsDriveS1, info->num_blocks >> 16); |
| 184 |
info->to_be_mounted = true; |
| 185 |
} |
| 186 |
return true; |
| 187 |
} else |
| 188 |
return false; |
| 189 |
} |
| 190 |
|
| 191 |
|
| 192 |
/* |
| 193 |
* Mount volumes for which the to_be_mounted flag is set |
| 194 |
* (called during interrupt time) |
| 195 |
*/ |
| 196 |
|
| 197 |
static void mount_mountable_volumes(void) |
| 198 |
{ |
| 199 |
DriveInfo *info = first_drive_info; |
| 200 |
while (info != NULL) { |
| 201 |
|
| 202 |
// Disk in drive? |
| 203 |
if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
| 204 |
|
| 205 |
// No, check if disk was inserted |
| 206 |
if (SysIsDiskInserted(info->fh)) |
| 207 |
DiskMountVolume(info->fh); |
| 208 |
} |
| 209 |
|
| 210 |
// Mount disk if flagged |
| 211 |
if (info->to_be_mounted) { |
| 212 |
D(bug(" mounting drive %d\n", info->num)); |
| 213 |
M68kRegisters r; |
| 214 |
r.d[0] = info->num; |
| 215 |
r.a[0] = 7; // diskEvent |
| 216 |
Execute68kTrap(0xa02f, &r); // PostEvent() |
| 217 |
info->to_be_mounted = false; |
| 218 |
} |
| 219 |
|
| 220 |
info = info->next; |
| 221 |
} |
| 222 |
} |
| 223 |
|
| 224 |
|
| 225 |
/* |
| 226 |
* Driver Open() routine |
| 227 |
*/ |
| 228 |
|
| 229 |
int16 DiskOpen(uint32 pb, uint32 dce) |
| 230 |
{ |
| 231 |
D(bug("DiskOpen\n")); |
| 232 |
|
| 233 |
// Set up DCE |
| 234 |
WriteMacInt32(dce + dCtlPosition, 0); |
| 235 |
acc_run_called = false; |
| 236 |
|
| 237 |
// Install drives |
| 238 |
for (DriveInfo *info = first_drive_info; info; info = info->next) { |
| 239 |
|
| 240 |
info->num = FindFreeDriveNumber(1); |
| 241 |
info->to_be_mounted = false; |
| 242 |
|
| 243 |
if (info->fh) { |
| 244 |
|
| 245 |
// Allocate drive status record |
| 246 |
M68kRegisters r; |
| 247 |
r.d[0] = SIZEOF_DrvSts; |
| 248 |
Execute68kTrap(0xa71e, &r); // NewPtrSysClear() |
| 249 |
if (r.a[0] == 0) |
| 250 |
continue; |
| 251 |
info->status = r.a[0]; |
| 252 |
D(bug(" DrvSts at %08lx\n", info->status)); |
| 253 |
|
| 254 |
// Set up drive status |
| 255 |
WriteMacInt16(info->status + dsQType, hard20); |
| 256 |
WriteMacInt8(info->status + dsInstalled, 1); |
| 257 |
bool disk_in_place = false; |
| 258 |
if (SysIsFixedDisk(info->fh)) { |
| 259 |
WriteMacInt8(info->status + dsDiskInPlace, 8); // Fixed disk |
| 260 |
disk_in_place = true; |
| 261 |
} else if (SysIsDiskInserted(info->fh)) { |
| 262 |
WriteMacInt8(info->status + dsDiskInPlace, 1); // Inserted removable disk |
| 263 |
disk_in_place = true; |
| 264 |
} |
| 265 |
if (disk_in_place) { |
| 266 |
D(bug(" disk inserted\n")); |
| 267 |
WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0x80 : 0); |
| 268 |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 269 |
info->to_be_mounted = true; |
| 270 |
} |
| 271 |
D(bug(" %ld blocks\n", info->num_blocks)); |
| 272 |
WriteMacInt16(info->status + dsDriveSize, info->num_blocks & 0xffff); |
| 273 |
WriteMacInt16(info->status + dsDriveS1, info->num_blocks >> 16); |
| 274 |
|
| 275 |
// Add drive to drive queue |
| 276 |
D(bug(" adding drive %d\n", info->num)); |
| 277 |
r.d[0] = (info->num << 16) | (DiskRefNum & 0xffff); |
| 278 |
r.a[0] = info->status + dsQLink; |
| 279 |
Execute68kTrap(0xa04e, &r); // AddDrive() |
| 280 |
} |
| 281 |
} |
| 282 |
return noErr; |
| 283 |
} |
| 284 |
|
| 285 |
|
| 286 |
/* |
| 287 |
* Driver Prime() routine |
| 288 |
*/ |
| 289 |
|
| 290 |
int16 DiskPrime(uint32 pb, uint32 dce) |
| 291 |
{ |
| 292 |
WriteMacInt32(pb + ioActCount, 0); |
| 293 |
|
| 294 |
// Drive valid and disk inserted? |
| 295 |
DriveInfo *info; |
| 296 |
if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
| 297 |
return nsDrvErr; |
| 298 |
if (!ReadMacInt8(info->status + dsDiskInPlace)) |
| 299 |
return offLinErr; |
| 300 |
|
| 301 |
// Get parameters |
| 302 |
void *buffer = Mac2HostAddr(ReadMacInt32(pb + ioBuffer)); |
| 303 |
size_t length = ReadMacInt32(pb + ioReqCount); |
| 304 |
loff_t position = ReadMacInt32(dce + dCtlPosition); |
| 305 |
if (ReadMacInt16(pb + ioPosMode) & 0x100) // 64 bit positioning |
| 306 |
position = ((loff_t)ReadMacInt32(pb + ioWPosOffset) << 32) || ReadMacInt32(pb + ioWPosOffset + 4); |
| 307 |
if ((length & 0x1ff) || (position & 0x1ff)) |
| 308 |
return paramErr; |
| 309 |
|
| 310 |
size_t actual = 0; |
| 311 |
if ((ReadMacInt16(pb + ioTrap) & 0xff) == aRdCmd) { |
| 312 |
|
| 313 |
// Read |
| 314 |
actual = Sys_read(info->fh, buffer, position, length); |
| 315 |
if (actual != length) |
| 316 |
return readErr; |
| 317 |
|
| 318 |
} else { |
| 319 |
|
| 320 |
// Write |
| 321 |
if (info->read_only) |
| 322 |
return wPrErr; |
| 323 |
actual = Sys_write(info->fh, buffer, position, length); |
| 324 |
if (actual != length) |
| 325 |
return writErr; |
| 326 |
} |
| 327 |
|
| 328 |
// Update ParamBlock and DCE |
| 329 |
WriteMacInt32(pb + ioActCount, actual); |
| 330 |
WriteMacInt32(dce + dCtlPosition, ReadMacInt32(dce + dCtlPosition) + actual); |
| 331 |
return noErr; |
| 332 |
} |
| 333 |
|
| 334 |
|
| 335 |
/* |
| 336 |
* Driver Control() routine |
| 337 |
*/ |
| 338 |
|
| 339 |
int16 DiskControl(uint32 pb, uint32 dce) |
| 340 |
{ |
| 341 |
uint16 code = ReadMacInt16(pb + csCode); |
| 342 |
D(bug("DiskControl %d\n", code)); |
| 343 |
|
| 344 |
// General codes |
| 345 |
switch (code) { |
| 346 |
case 1: // KillIO |
| 347 |
return noErr; |
| 348 |
|
| 349 |
case 65: { // Periodic action (accRun, "insert" disks on startup) |
| 350 |
mount_mountable_volumes(); |
| 351 |
WriteMacInt16(dce + dCtlFlags, ReadMacInt16(dce + dCtlFlags) & ~0x2000); // Disable periodic action |
| 352 |
acc_run_called = true; |
| 353 |
return noErr; |
| 354 |
} |
| 355 |
} |
| 356 |
|
| 357 |
// Drive valid? |
| 358 |
DriveInfo *info; |
| 359 |
if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
| 360 |
return nsDrvErr; |
| 361 |
|
| 362 |
// Drive-specific codes |
| 363 |
switch (code) { |
| 364 |
case 5: // Verify disk |
| 365 |
if (ReadMacInt8(info->status + dsDiskInPlace) > 0) |
| 366 |
return noErr; |
| 367 |
else |
| 368 |
return offLinErr; |
| 369 |
|
| 370 |
case 6: // Format disk |
| 371 |
if (info->read_only) |
| 372 |
return wPrErr; |
| 373 |
else if (ReadMacInt8(info->status + dsDiskInPlace) > 0) |
| 374 |
return noErr; |
| 375 |
else |
| 376 |
return offLinErr; |
| 377 |
|
| 378 |
case 7: // Eject disk |
| 379 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) { |
| 380 |
// Fixed disk, re-insert |
| 381 |
M68kRegisters r; |
| 382 |
r.d[0] = info->num; |
| 383 |
r.a[0] = 7; // diskEvent |
| 384 |
Execute68kTrap(0xa02f, &r); // PostEvent() |
| 385 |
} else if (ReadMacInt8(info->status + dsDiskInPlace) > 0) { |
| 386 |
SysEject(info->fh); |
| 387 |
WriteMacInt8(info->status + dsDiskInPlace, 0); |
| 388 |
} |
| 389 |
return noErr; |
| 390 |
|
| 391 |
case 21: // Get drive icon |
| 392 |
case 22: // Get disk icon |
| 393 |
WriteMacInt32(pb + csParam, DiskIconAddr); |
| 394 |
return noErr; |
| 395 |
|
| 396 |
case 23: // Get drive info |
| 397 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
| 398 |
WriteMacInt32(pb + csParam, 0x0601); // Unspecified fixed SCSI disk |
| 399 |
else |
| 400 |
WriteMacInt32(pb + csParam, 0x0201); // Unspecified SCSI disk |
| 401 |
return noErr; |
| 402 |
|
| 403 |
case 24: // Get partition size |
| 404 |
if (ReadMacInt8(info->status + dsDiskInPlace) > 0) { |
| 405 |
WriteMacInt32(pb + csParam, info->num_blocks); |
| 406 |
return noErr; |
| 407 |
} else |
| 408 |
return offLinErr; |
| 409 |
|
| 410 |
default: |
| 411 |
printf("WARNING: Unknown DiskControl(%d)\n", code); |
| 412 |
return controlErr; |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
|
| 417 |
/* |
| 418 |
* Driver Status() routine |
| 419 |
*/ |
| 420 |
|
| 421 |
int16 DiskStatus(uint32 pb, uint32 dce) |
| 422 |
{ |
| 423 |
DriveInfo *info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
| 424 |
uint16 code = ReadMacInt16(pb + csCode); |
| 425 |
D(bug("DiskStatus %d\n", code)); |
| 426 |
|
| 427 |
// General codes |
| 428 |
switch (code) { |
| 429 |
case 43: { // Driver gestalt |
| 430 |
uint32 sel = ReadMacInt32(pb + csParam); |
| 431 |
D(bug(" driver gestalt %c%c%c%c\n", sel >> 24, sel >> 16, sel >> 8, sel)); |
| 432 |
switch (sel) { |
| 433 |
case 'vers': // Version |
| 434 |
WriteMacInt32(pb + csParam + 4, 0x01008000); |
| 435 |
break; |
| 436 |
case 'devt': // Device type |
| 437 |
if (info != NULL) { |
| 438 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
| 439 |
WriteMacInt32(pb + csParam + 4, 'disk'); |
| 440 |
else |
| 441 |
WriteMacInt32(pb + csParam + 4, 'rdsk'); |
| 442 |
} else |
| 443 |
WriteMacInt32(pb + csParam + 4, 'disk'); |
| 444 |
break; |
| 445 |
case 'intf': // Interface type |
| 446 |
WriteMacInt32(pb + csParam + 4, 'basi'); |
| 447 |
break; |
| 448 |
case 'sync': // Only synchronous operation? |
| 449 |
WriteMacInt32(pb + csParam + 4, 0x01000000); |
| 450 |
break; |
| 451 |
case 'boot': // Boot ID |
| 452 |
if (info != NULL) |
| 453 |
WriteMacInt16(pb + csParam + 4, info->num); |
| 454 |
else |
| 455 |
WriteMacInt16(pb + csParam + 4, 0); |
| 456 |
WriteMacInt16(pb + csParam + 6, (uint16)DiskRefNum); |
| 457 |
break; |
| 458 |
case 'wide': // 64-bit access supported? |
| 459 |
WriteMacInt16(pb + csParam + 4, 0x0100); |
| 460 |
break; |
| 461 |
case 'purg': // Purge flags |
| 462 |
WriteMacInt32(pb + csParam + 4, 0); |
| 463 |
break; |
| 464 |
case 'ejec': // Eject flags |
| 465 |
WriteMacInt32(pb + csParam + 4, 0x00030003); // Don't eject on shutdown/restart |
| 466 |
break; |
| 467 |
case 'flus': // Flush flags |
| 468 |
WriteMacInt16(pb + csParam + 4, 0); |
| 469 |
break; |
| 470 |
case 'vmop': // Virtual memory attributes |
| 471 |
WriteMacInt32(pb + csParam + 4, 0); // Drive not available for VM |
| 472 |
break; |
| 473 |
default: |
| 474 |
return statusErr; |
| 475 |
} |
| 476 |
return noErr; |
| 477 |
} |
| 478 |
} |
| 479 |
|
| 480 |
// Drive valid? |
| 481 |
if (info == NULL) |
| 482 |
return nsDrvErr; |
| 483 |
|
| 484 |
// Drive-specific codes |
| 485 |
switch (code) { |
| 486 |
case 8: // Get drive status |
| 487 |
memcpy(Mac2HostAddr(pb + csParam), Mac2HostAddr(info->status), 22); |
| 488 |
return noErr; |
| 489 |
|
| 490 |
default: |
| 491 |
printf("WARNING: Unknown DiskStatus(%d)\n", code); |
| 492 |
return statusErr; |
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
|
| 497 |
/* |
| 498 |
* Driver interrupt routine - check for volumes to be mounted |
| 499 |
*/ |
| 500 |
|
| 501 |
void DiskInterrupt(void) |
| 502 |
{ |
| 503 |
static int tick_count = 0; |
| 504 |
if (!acc_run_called) |
| 505 |
return; |
| 506 |
|
| 507 |
tick_count++; |
| 508 |
if (tick_count > driver_delay) { |
| 509 |
tick_count = 0; |
| 510 |
mount_mountable_volumes(); |
| 511 |
} |
| 512 |
} |
