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/* |
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* disk.cpp - Generic disk driver |
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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> |
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#include <vector> |
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#ifndef NO_STD_NAMESPACE |
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using std::vector; |
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#endif |
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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// Struct for each drive |
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struct DriveInfo { |
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DriveInfo() |
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{ |
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next = NULL; |
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num = 0; |
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fh = NULL; |
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read_only = false; |
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status = 0; |
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} |
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struct disk_drive_info { |
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disk_drive_info() : num(0), fh(NULL), read_only(false), status(0) {} |
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disk_drive_info(void *fh_, bool ro) : num(0), fh(fh_), read_only(ro), status(0) {} |
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|
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void close_fh(void) { Sys_close(fh); } |
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DriveInfo *next; // Pointer to next DriveInfo (must be first in struct!) |
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int num; // Drive number |
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void *fh; // File handle |
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uint32 num_blocks; // Size in 512-byte blocks |
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uint32 status; // Mac address of drive status record |
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}; |
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// Linked list of DriveInfos |
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static DriveInfo *first_drive_info; |
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// List of drives handled by this driver |
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typedef vector<disk_drive_info> drive_vec; |
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static drive_vec drives; |
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// Icon address (Mac address space, set by PatchROM()) |
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uint32 DiskIconAddr; |
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// Flag: Control(accRun) has been called, interrupt routine is now active |
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static bool acc_run_called = false; |
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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 |
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*/ |
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static DriveInfo *get_drive_info(int num) |
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static drive_vec::iterator get_drive_info(int num) |
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{ |
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DriveInfo *info = first_drive_info; |
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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; |
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} |
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return NULL; |
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return info; |
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} |
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void DiskInit(void) |
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{ |
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first_drive_info = NULL; |
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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; |
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int index = 0; |
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const char *str; |
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while ((str = PrefsFindString("disk", index++)) != NULL) { |
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bool read_only = false; |
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str++; |
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} |
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void *fh = Sys_open(str, read_only); |
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if (fh) { |
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D(bug(" adding drive '%s'\n", str)); |
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DriveInfo *info = new DriveInfo; |
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info->fh = fh; |
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info->read_only = SysIsReadOnly(fh); |
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DriveInfo *p = (DriveInfo *)&first_drive_info; |
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while (p->next != NULL) |
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p = p->next; |
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p->next = info; |
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} |
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if (fh) |
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drives.push_back(disk_drive_info(fh, SysIsReadOnly(fh))); |
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} |
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} |
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void DiskExit(void) |
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{ |
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DriveInfo *info = first_drive_info, *next; |
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while (info != NULL) { |
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Sys_close(info->fh); |
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next = info->next; |
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delete info; |
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info = next; |
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} |
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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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info->close_fh(); |
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drives.clear(); |
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} |
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bool DiskMountVolume(void *fh) |
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{ |
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DriveInfo *info; |
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for (info = first_drive_info; info != NULL && info->fh != fh; info = info->next) ; |
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if (info) { |
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drive_vec::iterator info = drives.begin(), end = drives.end(); |
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while (info != end && info->fh != fh) |
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++info; |
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if (info != end) { |
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if (SysIsDiskInserted(info->fh)) { |
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info->read_only = SysIsReadOnly(info->fh); |
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WriteMacInt8(info->status + dsDiskInPlace, 1); // Inserted removable disk |
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/* |
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* Mount volumes for which the to_be_mounted flag is set |
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* (called during interrupt time) |
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*/ |
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|
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static void mount_mountable_volumes(void) |
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{ |
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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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// Disk in drive? |
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if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
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// No, check if disk was inserted |
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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 |
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Execute68kTrap(0xa02f, &r); // PostEvent() |
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info->to_be_mounted = false; |
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} |
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} |
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} |
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|
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/* |
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* Driver Open() routine |
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*/ |
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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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// Install drives |
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for (DriveInfo *info = first_drive_info; info; info = info->next) { |
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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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info->num = FindFreeDriveNumber(1); |
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info->to_be_mounted = false; |
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info->num_blocks = SysGetFileSize(info->fh) / 512; |
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info->to_be_mounted = true; |
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} |
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D(bug(" %ld blocks\n", info->num_blocks)); |
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D(bug(" %d blocks\n", info->num_blocks)); |
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WriteMacInt16(info->status + dsDriveSize, info->num_blocks & 0xffff); |
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WriteMacInt16(info->status + dsDriveS1, info->num_blocks >> 16); |
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WriteMacInt32(pb + ioActCount, 0); |
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// Drive valid and disk inserted? |
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DriveInfo *info; |
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if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
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drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
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if (info == drives.end()) |
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return nsDrvErr; |
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if (!ReadMacInt8(info->status + dsDiskInPlace)) |
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return offLinErr; |
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case 1: // KillIO |
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return noErr; |
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case 65: { // Periodic action ("insert" disks on startup and check for disk changes) |
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DriveInfo *info = first_drive_info; |
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while (info != NULL) { |
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// Disk in drive? |
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if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
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// No, check if disk was inserted |
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if (SysIsDiskInserted(info->fh)) |
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DiskMountVolume(info->fh); |
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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 |
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Execute68kTrap(0xa02f, &r); // PostEvent() |
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info->to_be_mounted = false; |
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} |
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info = info->next; |
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} |
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case 65: { // Periodic action (accRun, "insert" disks on startup) |
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mount_mountable_volumes(); |
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WriteMacInt16(dce + dCtlFlags, ReadMacInt16(dce + dCtlFlags) & ~0x2000); // Disable periodic action |
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acc_run_called = true; |
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return noErr; |
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} |
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} |
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// Drive valid? |
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DriveInfo *info; |
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if ((info = get_drive_info(ReadMacInt16(pb + ioVRefNum))) == NULL) |
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drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
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if (info == drives.end()) |
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return nsDrvErr; |
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// Drive-specific codes |
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int16 DiskStatus(uint32 pb, uint32 dce) |
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{ |
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DriveInfo *info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
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> |
drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
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uint16 code = ReadMacInt16(pb + csCode); |
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D(bug("DiskStatus %d\n", code)); |
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// General codes |
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> |
// General codes (we can get these even if the drive was invalid) |
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switch (code) { |
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case 43: { // Driver gestalt |
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uint32 sel = ReadMacInt32(pb + csParam); |
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D(bug(" driver gestalt %c%c%c%c\n", sel >> 24, sel >> 16, sel >> 8, sel)); |
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switch (sel) { |
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case 'vers': // Version |
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case FOURCC('v','e','r','s'): // Version |
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WriteMacInt32(pb + csParam + 4, 0x01008000); |
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break; |
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case 'devt': // Device type |
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if (info != NULL) { |
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case FOURCC('d','e','v','t'): // Device type |
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> |
if (info != drives.end()) { |
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if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
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WriteMacInt32(pb + csParam + 4, 'disk'); |
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> |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
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else |
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WriteMacInt32(pb + csParam + 4, 'rdsk'); |
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WriteMacInt32(pb + csParam + 4, FOURCC('r','d','s','k')); |
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} else |
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WriteMacInt32(pb + csParam + 4, 'disk'); |
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> |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
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break; |
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case 'intf': // Interface type |
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WriteMacInt32(pb + csParam + 4, 'basi'); |
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case FOURCC('i','n','t','f'): // Interface type |
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WriteMacInt32(pb + csParam + 4, EMULATOR_ID_4); |
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break; |
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case 'sync': // Only synchronous operation? |
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case FOURCC('s','y','n','c'): // Only synchronous operation? |
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WriteMacInt32(pb + csParam + 4, 0x01000000); |
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break; |
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case 'boot': // Boot ID |
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if (info != NULL) |
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case FOURCC('b','o','o','t'): // Boot ID |
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if (info != drives.end()) |
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WriteMacInt16(pb + csParam + 4, info->num); |
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else |
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WriteMacInt16(pb + csParam + 4, 0); |
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WriteMacInt16(pb + csParam + 6, (uint16)DiskRefNum); |
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break; |
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case 'wide': // 64-bit access supported? |
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> |
case FOURCC('w','i','d','e'): // 64-bit access supported? |
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WriteMacInt16(pb + csParam + 4, 0x0100); |
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break; |
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case 'purg': // Purge flags |
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> |
case FOURCC('p','u','r','g'): // Purge flags |
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WriteMacInt32(pb + csParam + 4, 0); |
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break; |
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case 'ejec': // Eject flags |
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case FOURCC('e','j','e','c'): // Eject flags |
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WriteMacInt32(pb + csParam + 4, 0x00030003); // Don't eject on shutdown/restart |
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break; |
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case 'flus': // Flush flags |
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case FOURCC('f','l','u','s'): // Flush flags |
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WriteMacInt16(pb + csParam + 4, 0); |
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break; |
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case 'vmop': // Virtual memory attributes |
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> |
case FOURCC('v','m','o','p'): // Virtual memory attributes |
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WriteMacInt32(pb + csParam + 4, 0); // Drive not available for VM |
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break; |
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default: |
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} |
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// Drive valid? |
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if (info == NULL) |
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> |
if (info == drives.end()) |
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return nsDrvErr; |
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|
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// Drive-specific codes |
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switch (code) { |
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case 8: // Get drive status |
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< |
memcpy(Mac2HostAddr(pb + csParam), Mac2HostAddr(info->status), 22); |
| 471 |
> |
Mac2Mac_memcpy(pb + csParam, info->status, 22); |
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return noErr; |
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|
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default: |
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return statusErr; |
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} |
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} |
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|
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|
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/* |
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* Driver interrupt routine (1Hz) - check for volumes to be mounted |
| 483 |
+ |
*/ |
| 484 |
+ |
|
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void DiskInterrupt(void) |
| 486 |
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{ |
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if (!acc_run_called) |
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return; |
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+ |
|
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mount_mountable_volumes(); |
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+ |
} |
