| 1 |
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/* |
| 2 |
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* disk.cpp - Generic disk driver |
| 3 |
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* |
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< |
* Basilisk II (C) 1997-1999 Christian Bauer |
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> |
* Basilisk II (C) 1997-2001 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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*/ |
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#include <string.h> |
| 30 |
+ |
#include <vector> |
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|
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#ifndef NO_STD_NAMESPACE |
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using std::vector; |
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#endif |
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|
| 36 |
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
| 70 |
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| 71 |
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|
| 72 |
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// Struct for each drive |
| 73 |
< |
struct DriveInfo { |
| 74 |
< |
DriveInfo() |
| 75 |
< |
{ |
| 76 |
< |
next = NULL; |
| 77 |
< |
num = 0; |
| 73 |
< |
fh = NULL; |
| 74 |
< |
read_only = false; |
| 75 |
< |
status = 0; |
| 76 |
< |
} |
| 73 |
> |
struct disk_drive_info { |
| 74 |
> |
disk_drive_info() : num(0), fh(NULL), start_byte(0), read_only(false), status(0) {} |
| 75 |
> |
disk_drive_info(void *fh_, bool ro) : num(0), fh(fh_), read_only(ro), status(0) {} |
| 76 |
> |
|
| 77 |
> |
void close_fh(void) { Sys_close(fh); } |
| 78 |
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|
| 78 |
– |
DriveInfo *next; // Pointer to next DriveInfo (must be first in struct!) |
| 79 |
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int num; // Drive number |
| 80 |
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void *fh; // File handle |
| 81 |
+ |
loff_t start_byte; // Start of HFS partition on disk |
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uint32 num_blocks; // Size in 512-byte blocks |
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bool to_be_mounted; // Flag: drive must be mounted in accRun |
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bool read_only; // Flag: force write protection |
| 85 |
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uint32 status; // Mac address of drive status record |
| 86 |
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}; |
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|
| 88 |
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// Linked list of DriveInfos |
| 89 |
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static DriveInfo *first_drive_info; |
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> |
// List of drives handled by this driver |
| 89 |
> |
typedef vector<disk_drive_info> drive_vec; |
| 90 |
> |
static drive_vec drives; |
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|
| 92 |
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// Icon address (Mac address space, set by PatchROM()) |
| 93 |
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uint32 DiskIconAddr; |
| 94 |
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|
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+ |
// Flag: Control(accRun) has been called, interrupt routine is now active |
| 96 |
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static bool acc_run_called = false; |
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|
| 98 |
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|
| 99 |
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/* |
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* Get pointer to drive info, NULL = invalid drive number |
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* Get pointer to drive info or drives.end() if not found |
| 101 |
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*/ |
| 102 |
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|
| 103 |
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static DriveInfo *get_drive_info(int num) |
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> |
static drive_vec::iterator get_drive_info(int num) |
| 104 |
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{ |
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DriveInfo *info = first_drive_info; |
| 106 |
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while (info != NULL) { |
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> |
drive_vec::iterator info, end = drives.end(); |
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> |
for (info = drives.begin(); info != end; ++info) { |
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if (info->num == num) |
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return info; |
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info = info->next; |
| 109 |
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} |
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< |
return NULL; |
| 110 |
> |
return info; |
| 111 |
> |
} |
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|
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> |
|
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/* |
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* Find HFS partition, set info->start_byte and info->num_blocks |
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* (0 = no partition map or HFS partition found, assume flat disk image) |
| 117 |
> |
*/ |
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|
| 119 |
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static void find_hfs_partition(disk_drive_info &info) |
| 120 |
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{ |
| 121 |
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info.start_byte = 0; |
| 122 |
> |
info.num_blocks = 0; |
| 123 |
> |
uint8 *map = new uint8[512]; |
| 124 |
> |
|
| 125 |
> |
// Search first 64 blocks for HFS partition |
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> |
for (int i=0; i<64; i++) { |
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> |
if (Sys_read(info.fh, map, i * 512, 512) != 512) |
| 128 |
> |
break; |
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> |
|
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> |
// Not a partition map block? Then look at next block |
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> |
uint16 sig = (map[0] << 8) | map[1]; |
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if (sig != 0x504d) |
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continue; |
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|
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> |
// Partition map block found, Apple HFS partition? |
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> |
if (strcmp((char *)(map + 48), "Apple_HFS") == 0) { |
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info.start_byte = ntohl(((uint32 *)map)[2]) << 9; |
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> |
info.num_blocks = ntohl(((uint32 *)map)[3]); |
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D(bug(" HFS partition found at %d, %d blocks\n", info.start_byte, info.num_blocks)); |
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> |
break; |
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> |
} |
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> |
} |
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> |
delete[] map; |
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} |
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void DiskInit(void) |
| 152 |
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{ |
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– |
first_drive_info = NULL; |
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– |
|
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// No drives specified in prefs? Then add defaults |
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if (PrefsFindString("disk", 0) == NULL) |
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SysAddDiskPrefs(); |
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// Add drives specified in preferences |
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< |
int32 index = 0; |
| 158 |
> |
int index = 0; |
| 159 |
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const char *str; |
| 160 |
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while ((str = PrefsFindString("disk", index++)) != NULL) { |
| 161 |
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bool read_only = false; |
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str++; |
| 165 |
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} |
| 166 |
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void *fh = Sys_open(str, read_only); |
| 167 |
< |
if (fh) { |
| 168 |
< |
D(bug(" adding drive '%s'\n", str)); |
| 134 |
< |
DriveInfo *info = new DriveInfo; |
| 135 |
< |
info->fh = fh; |
| 136 |
< |
info->read_only = SysIsReadOnly(fh); |
| 137 |
< |
DriveInfo *p = (DriveInfo *)&first_drive_info; |
| 138 |
< |
while (p->next != NULL) |
| 139 |
< |
p = p->next; |
| 140 |
< |
p->next = info; |
| 141 |
< |
} |
| 167 |
> |
if (fh) |
| 168 |
> |
drives.push_back(disk_drive_info(fh, SysIsReadOnly(fh))); |
| 169 |
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} |
| 170 |
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} |
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void DiskExit(void) |
| 178 |
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{ |
| 179 |
< |
DriveInfo *info = first_drive_info, *next; |
| 180 |
< |
while (info != NULL) { |
| 181 |
< |
Sys_close(info->fh); |
| 182 |
< |
next = info->next; |
| 156 |
< |
delete info; |
| 157 |
< |
info = next; |
| 158 |
< |
} |
| 179 |
> |
drive_vec::iterator info, end = drives.end(); |
| 180 |
> |
for (info = drives.begin(); info != end; ++info) |
| 181 |
> |
info->close_fh(); |
| 182 |
> |
drives.clear(); |
| 183 |
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} |
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| 185 |
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| 189 |
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| 190 |
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bool DiskMountVolume(void *fh) |
| 191 |
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{ |
| 192 |
< |
DriveInfo *info; |
| 193 |
< |
for (info = first_drive_info; info != NULL && info->fh != fh; info = info->next) ; |
| 194 |
< |
if (info) { |
| 192 |
> |
drive_vec::iterator info = drives.begin(), end = drives.end(); |
| 193 |
> |
while (info != end && info->fh != fh) |
| 194 |
> |
++info; |
| 195 |
> |
if (info != end) { |
| 196 |
|
if (SysIsDiskInserted(info->fh)) { |
| 197 |
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info->read_only = SysIsReadOnly(info->fh); |
| 198 |
|
WriteMacInt8(info->status + dsDiskInPlace, 1); // Inserted removable disk |
| 199 |
|
WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0xff : 0); |
| 200 |
< |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 200 |
> |
find_hfs_partition(*info); |
| 201 |
> |
if (info->start_byte == 0) |
| 202 |
> |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 203 |
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WriteMacInt16(info->status + dsDriveSize, info->num_blocks & 0xffff); |
| 204 |
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WriteMacInt16(info->status + dsDriveS1, info->num_blocks >> 16); |
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info->to_be_mounted = true; |
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|
| 212 |
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|
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/* |
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+ |
* Mount volumes for which the to_be_mounted flag is set |
| 215 |
+ |
* (called during interrupt time) |
| 216 |
+ |
*/ |
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+ |
|
| 218 |
+ |
static void mount_mountable_volumes(void) |
| 219 |
+ |
{ |
| 220 |
+ |
drive_vec::iterator info, end = drives.end(); |
| 221 |
+ |
for (info = drives.begin(); info != end; ++info) { |
| 222 |
+ |
|
| 223 |
+ |
// Disk in drive? |
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+ |
if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
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+ |
|
| 226 |
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// No, check if disk was inserted |
| 227 |
+ |
if (SysIsDiskInserted(info->fh)) |
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DiskMountVolume(info->fh); |
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} |
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|
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// Mount disk if flagged |
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if (info->to_be_mounted) { |
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D(bug(" mounting drive %d\n", info->num)); |
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M68kRegisters r; |
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+ |
r.d[0] = info->num; |
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r.a[0] = 7; // diskEvent |
| 237 |
+ |
Execute68kTrap(0xa02f, &r); // PostEvent() |
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+ |
info->to_be_mounted = false; |
| 239 |
+ |
} |
| 240 |
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} |
| 241 |
+ |
} |
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+ |
|
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|
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/* |
| 245 |
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* Driver Open() routine |
| 246 |
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*/ |
| 247 |
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// Set up DCE |
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WriteMacInt32(dce + dCtlPosition, 0); |
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+ |
acc_run_called = false; |
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|
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// Install drives |
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< |
for (DriveInfo *info = first_drive_info; info; info = info->next) { |
| 257 |
> |
drive_vec::iterator info, end = drives.end(); |
| 258 |
> |
for (info = drives.begin(); info != end; ++info) { |
| 259 |
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|
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info->num = FindFreeDriveNumber(1); |
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info->to_be_mounted = false; |
| 285 |
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if (disk_in_place) { |
| 286 |
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D(bug(" disk inserted\n")); |
| 287 |
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WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0x80 : 0); |
| 288 |
< |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 288 |
> |
find_hfs_partition(*info); |
| 289 |
> |
if (info->start_byte == 0) |
| 290 |
> |
info->num_blocks = SysGetFileSize(info->fh) / 512; |
| 291 |
|
info->to_be_mounted = true; |
| 292 |
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} |
| 293 |
< |
D(bug(" %ld blocks\n", info->num_blocks)); |
| 293 |
> |
D(bug(" %d blocks\n", info->num_blocks)); |
| 294 |
|
WriteMacInt16(info->status + dsDriveSize, info->num_blocks & 0xffff); |
| 295 |
|
WriteMacInt16(info->status + dsDriveS1, info->num_blocks >> 16); |
| 296 |
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|
| 314 |
|
WriteMacInt32(pb + ioActCount, 0); |
| 315 |
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|
| 316 |
|
// Drive valid and disk inserted? |
| 317 |
< |
DriveInfo *info; |
| 318 |
< |
if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
| 317 |
> |
drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
| 318 |
> |
if (info == drives.end()) |
| 319 |
|
return nsDrvErr; |
| 320 |
|
if (!ReadMacInt8(info->status + dsDiskInPlace)) |
| 321 |
|
return offLinErr; |
| 333 |
|
if ((ReadMacInt16(pb + ioTrap) & 0xff) == aRdCmd) { |
| 334 |
|
|
| 335 |
|
// Read |
| 336 |
< |
actual = Sys_read(info->fh, buffer, position, length); |
| 336 |
> |
actual = Sys_read(info->fh, buffer, position + info->start_byte, length); |
| 337 |
|
if (actual != length) |
| 338 |
|
return readErr; |
| 339 |
|
|
| 342 |
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// Write |
| 343 |
|
if (info->read_only) |
| 344 |
|
return wPrErr; |
| 345 |
< |
actual = Sys_write(info->fh, buffer, position, length); |
| 345 |
> |
actual = Sys_write(info->fh, buffer, position + info->start_byte, length); |
| 346 |
|
if (actual != length) |
| 347 |
|
return writErr; |
| 348 |
|
} |
| 368 |
|
case 1: // KillIO |
| 369 |
|
return noErr; |
| 370 |
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|
| 371 |
< |
case 65: { // Periodic action ("insert" disks on startup and check for disk changes) |
| 372 |
< |
DriveInfo *info = first_drive_info; |
| 373 |
< |
while (info != NULL) { |
| 374 |
< |
|
| 313 |
< |
// Disk in drive? |
| 314 |
< |
if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
| 315 |
< |
|
| 316 |
< |
// No, check if disk was inserted |
| 317 |
< |
if (SysIsDiskInserted(info->fh)) |
| 318 |
< |
DiskMountVolume(info->fh); |
| 319 |
< |
} |
| 320 |
< |
|
| 321 |
< |
// Mount disk if flagged |
| 322 |
< |
if (info->to_be_mounted) { |
| 323 |
< |
D(bug(" mounting drive %d\n", info->num)); |
| 324 |
< |
M68kRegisters r; |
| 325 |
< |
r.d[0] = info->num; |
| 326 |
< |
r.a[0] = 7; // diskEvent |
| 327 |
< |
Execute68kTrap(0xa02f, &r); // PostEvent() |
| 328 |
< |
info->to_be_mounted = false; |
| 329 |
< |
} |
| 330 |
< |
|
| 331 |
< |
info = info->next; |
| 332 |
< |
} |
| 371 |
> |
case 65: { // Periodic action (accRun, "insert" disks on startup) |
| 372 |
> |
mount_mountable_volumes(); |
| 373 |
> |
WriteMacInt16(dce + dCtlFlags, ReadMacInt16(dce + dCtlFlags) & ~0x2000); // Disable periodic action |
| 374 |
> |
acc_run_called = true; |
| 375 |
|
return noErr; |
| 376 |
|
} |
| 377 |
|
} |
| 378 |
|
|
| 379 |
|
// Drive valid? |
| 380 |
< |
DriveInfo *info; |
| 381 |
< |
if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
| 380 |
> |
drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
| 381 |
> |
if (info == drives.end()) |
| 382 |
|
return nsDrvErr; |
| 383 |
|
|
| 384 |
|
// Drive-specific codes |
| 442 |
|
|
| 443 |
|
int16 DiskStatus(uint32 pb, uint32 dce) |
| 444 |
|
{ |
| 445 |
< |
DriveInfo *info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
| 445 |
> |
drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
| 446 |
|
uint16 code = ReadMacInt16(pb + csCode); |
| 447 |
|
D(bug("DiskStatus %d\n", code)); |
| 448 |
|
|
| 449 |
< |
// General codes |
| 449 |
> |
// General codes (we can get these even if the drive was invalid) |
| 450 |
|
switch (code) { |
| 451 |
|
case 43: { // Driver gestalt |
| 452 |
|
uint32 sel = ReadMacInt32(pb + csParam); |
| 453 |
|
D(bug(" driver gestalt %c%c%c%c\n", sel >> 24, sel >> 16, sel >> 8, sel)); |
| 454 |
|
switch (sel) { |
| 455 |
< |
case 'vers': // Version |
| 455 |
> |
case FOURCC('v','e','r','s'): // Version |
| 456 |
|
WriteMacInt32(pb + csParam + 4, 0x01008000); |
| 457 |
|
break; |
| 458 |
< |
case 'devt': // Device type |
| 459 |
< |
if (info != NULL) { |
| 458 |
> |
case FOURCC('d','e','v','t'): // Device type |
| 459 |
> |
if (info != drives.end()) { |
| 460 |
|
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
| 461 |
< |
WriteMacInt32(pb + csParam + 4, 'disk'); |
| 461 |
> |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
| 462 |
|
else |
| 463 |
< |
WriteMacInt32(pb + csParam + 4, 'rdsk'); |
| 463 |
> |
WriteMacInt32(pb + csParam + 4, FOURCC('r','d','s','k')); |
| 464 |
|
} else |
| 465 |
< |
WriteMacInt32(pb + csParam + 4, 'disk'); |
| 465 |
> |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
| 466 |
|
break; |
| 467 |
< |
case 'intf': // Interface type |
| 468 |
< |
WriteMacInt32(pb + csParam + 4, 'basi'); |
| 467 |
> |
case FOURCC('i','n','t','f'): // Interface type |
| 468 |
> |
WriteMacInt32(pb + csParam + 4, EMULATOR_ID_4); |
| 469 |
|
break; |
| 470 |
< |
case 'sync': // Only synchronous operation? |
| 470 |
> |
case FOURCC('s','y','n','c'): // Only synchronous operation? |
| 471 |
|
WriteMacInt32(pb + csParam + 4, 0x01000000); |
| 472 |
|
break; |
| 473 |
< |
case 'boot': // Boot ID |
| 474 |
< |
if (info != NULL) |
| 473 |
> |
case FOURCC('b','o','o','t'): // Boot ID |
| 474 |
> |
if (info != drives.end()) |
| 475 |
|
WriteMacInt16(pb + csParam + 4, info->num); |
| 476 |
|
else |
| 477 |
|
WriteMacInt16(pb + csParam + 4, 0); |
| 478 |
|
WriteMacInt16(pb + csParam + 6, (uint16)DiskRefNum); |
| 479 |
|
break; |
| 480 |
< |
case 'wide': // 64-bit access supported? |
| 480 |
> |
case FOURCC('w','i','d','e'): // 64-bit access supported? |
| 481 |
|
WriteMacInt16(pb + csParam + 4, 0x0100); |
| 482 |
|
break; |
| 483 |
< |
case 'purg': // Purge flags |
| 483 |
> |
case FOURCC('p','u','r','g'): // Purge flags |
| 484 |
|
WriteMacInt32(pb + csParam + 4, 0); |
| 485 |
|
break; |
| 486 |
< |
case 'ejec': // Eject flags |
| 486 |
> |
case FOURCC('e','j','e','c'): // Eject flags |
| 487 |
|
WriteMacInt32(pb + csParam + 4, 0x00030003); // Don't eject on shutdown/restart |
| 488 |
|
break; |
| 489 |
< |
case 'flus': // Flush flags |
| 489 |
> |
case FOURCC('f','l','u','s'): // Flush flags |
| 490 |
|
WriteMacInt16(pb + csParam + 4, 0); |
| 491 |
|
break; |
| 492 |
< |
case 'vmop': // Virtual memory attributes |
| 492 |
> |
case FOURCC('v','m','o','p'): // Virtual memory attributes |
| 493 |
|
WriteMacInt32(pb + csParam + 4, 0); // Drive not available for VM |
| 494 |
|
break; |
| 495 |
|
default: |
| 500 |
|
} |
| 501 |
|
|
| 502 |
|
// Drive valid? |
| 503 |
< |
if (info == NULL) |
| 503 |
> |
if (info == drives.end()) |
| 504 |
|
return nsDrvErr; |
| 505 |
|
|
| 506 |
|
// Drive-specific codes |
| 507 |
|
switch (code) { |
| 508 |
|
case 8: // Get drive status |
| 509 |
< |
memcpy(Mac2HostAddr(pb + csParam), Mac2HostAddr(info->status), 22); |
| 509 |
> |
Mac2Mac_memcpy(pb + csParam, info->status, 22); |
| 510 |
|
return noErr; |
| 511 |
|
|
| 512 |
|
default: |
| 514 |
|
return statusErr; |
| 515 |
|
} |
| 516 |
|
} |
| 517 |
+ |
|
| 518 |
+ |
|
| 519 |
+ |
/* |
| 520 |
+ |
* Driver interrupt routine (1Hz) - check for volumes to be mounted |
| 521 |
+ |
*/ |
| 522 |
+ |
|
| 523 |
+ |
void DiskInterrupt(void) |
| 524 |
+ |
{ |
| 525 |
+ |
if (!acc_run_called) |
| 526 |
+ |
return; |
| 527 |
+ |
|
| 528 |
+ |
mount_mountable_volumes(); |
| 529 |
+ |
} |
