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/* |
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* disk.cpp - Generic disk driver |
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* |
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* Basilisk II (C) 1997-2001 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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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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/* |
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* SEE ALSO |
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* Inside Macintosh: Devices, chapter 1 "Device Manager" |
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* Technote DV 05: "Drive Queue Elements" |
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* Technote DV 23: "Driver Education" |
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* Technote FL 24: "Don't Look at ioPosOffset for Devices" |
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*/ |
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|
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#include <string.h> |
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#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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|
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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#include "main.h" |
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#include "macos_util.h" |
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#include "sys.h" |
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#include "prefs.h" |
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#include "disk.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// .Disk Disk/drive icon |
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const uint8 DiskIcon[258] = { |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
52 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
53 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xfe, |
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0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, |
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0x80, 0x00, 0x00, 0x01, 0x8c, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x01, |
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0x7f, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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|
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xfe, |
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
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0x7f, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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|
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0, 0 |
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}; |
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|
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|
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// Struct for each drive |
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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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|
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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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bool to_be_mounted; // Flag: drive must be mounted in accRun |
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bool read_only; // Flag: force write protection |
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uint32 status; // Mac address of drive status record |
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}; |
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|
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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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|
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// Icon address (Mac address space, set by PatchROM()) |
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uint32 DiskIconAddr; |
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|
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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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|
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/* |
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* Get pointer to drive info or drives.end() if not found |
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*/ |
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|
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static drive_vec::iterator get_drive_info(int num) |
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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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if (info->num == num) |
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return info; |
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} |
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return info; |
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} |
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|
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|
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/* |
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* Initialization |
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*/ |
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|
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void DiskInit(void) |
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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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|
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// Add drives specified in preferences |
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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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if (str[0] == '*') { |
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read_only = true; |
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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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drives.push_back(disk_drive_info(fh, SysIsReadOnly(fh))); |
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} |
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} |
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|
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|
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/* |
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* Deinitialization |
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*/ |
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|
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void DiskExit(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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info->close_fh(); |
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drives.clear(); |
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} |
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|
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|
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/* |
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* Disk was inserted, flag for mounting |
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*/ |
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|
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bool DiskMountVolume(void *fh) |
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{ |
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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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WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0xff : 0); |
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info->num_blocks = SysGetFileSize(info->fh) / 512; |
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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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info->to_be_mounted = true; |
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} |
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return true; |
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} else |
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return false; |
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} |
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|
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|
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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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|
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// Disk in drive? |
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if (!ReadMacInt8(info->status + dsDiskInPlace)) { |
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|
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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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/* |
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* Driver Open() routine |
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*/ |
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|
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int16 DiskOpen(uint32 pb, uint32 dce) |
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{ |
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D(bug("DiskOpen\n")); |
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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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|
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// Install drives |
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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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|
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info->num = FindFreeDriveNumber(1); |
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info->to_be_mounted = false; |
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|
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if (info->fh) { |
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|
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// Allocate drive status record |
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M68kRegisters r; |
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r.d[0] = SIZEOF_DrvSts; |
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Execute68kTrap(0xa71e, &r); // NewPtrSysClear() |
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if (r.a[0] == 0) |
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continue; |
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info->status = r.a[0]; |
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D(bug(" DrvSts at %08lx\n", info->status)); |
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|
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// Set up drive status |
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WriteMacInt16(info->status + dsQType, hard20); |
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WriteMacInt8(info->status + dsInstalled, 1); |
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bool disk_in_place = false; |
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if (SysIsFixedDisk(info->fh)) { |
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WriteMacInt8(info->status + dsDiskInPlace, 8); // Fixed disk |
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disk_in_place = true; |
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} else if (SysIsDiskInserted(info->fh)) { |
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WriteMacInt8(info->status + dsDiskInPlace, 1); // Inserted removable disk |
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disk_in_place = true; |
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} |
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if (disk_in_place) { |
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D(bug(" disk inserted\n")); |
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WriteMacInt8(info->status + dsWriteProt, info->read_only ? 0x80 : 0); |
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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(" %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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|
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// Add drive to drive queue |
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D(bug(" adding drive %d\n", info->num)); |
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r.d[0] = (info->num << 16) | (DiskRefNum & 0xffff); |
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r.a[0] = info->status + dsQLink; |
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Execute68kTrap(0xa04e, &r); // AddDrive() |
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} |
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} |
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return noErr; |
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} |
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|
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|
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/* |
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* Driver Prime() routine |
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*/ |
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|
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int16 DiskPrime(uint32 pb, uint32 dce) |
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{ |
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WriteMacInt32(pb + ioActCount, 0); |
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|
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// Drive valid and disk inserted? |
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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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|
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// Get parameters |
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void *buffer = Mac2HostAddr(ReadMacInt32(pb + ioBuffer)); |
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size_t length = ReadMacInt32(pb + ioReqCount); |
288 |
loff_t position = ReadMacInt32(dce + dCtlPosition); |
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if (ReadMacInt16(pb + ioPosMode) & 0x100) // 64 bit positioning |
290 |
position = ((loff_t)ReadMacInt32(pb + ioWPosOffset) << 32) || ReadMacInt32(pb + ioWPosOffset + 4); |
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if ((length & 0x1ff) || (position & 0x1ff)) |
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return paramErr; |
293 |
|
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size_t actual = 0; |
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if ((ReadMacInt16(pb + ioTrap) & 0xff) == aRdCmd) { |
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|
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// Read |
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actual = Sys_read(info->fh, buffer, position, length); |
299 |
if (actual != length) |
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return readErr; |
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|
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} else { |
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|
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// Write |
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if (info->read_only) |
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return wPrErr; |
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actual = Sys_write(info->fh, buffer, position, length); |
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if (actual != length) |
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return writErr; |
310 |
} |
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|
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// Update ParamBlock and DCE |
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WriteMacInt32(pb + ioActCount, actual); |
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WriteMacInt32(dce + dCtlPosition, ReadMacInt32(dce + dCtlPosition) + actual); |
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return noErr; |
316 |
} |
317 |
|
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|
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/* |
320 |
* Driver Control() routine |
321 |
*/ |
322 |
|
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int16 DiskControl(uint32 pb, uint32 dce) |
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{ |
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uint16 code = ReadMacInt16(pb + csCode); |
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D(bug("DiskControl %d\n", code)); |
327 |
|
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// General codes |
329 |
switch (code) { |
330 |
case 1: // KillIO |
331 |
return noErr; |
332 |
|
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case 65: { // Periodic action (accRun, "insert" disks on startup) |
334 |
mount_mountable_volumes(); |
335 |
WriteMacInt16(dce + dCtlFlags, ReadMacInt16(dce + dCtlFlags) & ~0x2000); // Disable periodic action |
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acc_run_called = true; |
337 |
return noErr; |
338 |
} |
339 |
} |
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|
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// Drive valid? |
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drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
343 |
if (info == drives.end()) |
344 |
return nsDrvErr; |
345 |
|
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// Drive-specific codes |
347 |
switch (code) { |
348 |
case 5: // Verify disk |
349 |
if (ReadMacInt8(info->status + dsDiskInPlace) > 0) |
350 |
return noErr; |
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else |
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return offLinErr; |
353 |
|
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case 6: // Format disk |
355 |
if (info->read_only) |
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return wPrErr; |
357 |
else if (ReadMacInt8(info->status + dsDiskInPlace) > 0) |
358 |
return noErr; |
359 |
else |
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return offLinErr; |
361 |
|
362 |
case 7: // Eject disk |
363 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) { |
364 |
// Fixed disk, re-insert |
365 |
M68kRegisters r; |
366 |
r.d[0] = info->num; |
367 |
r.a[0] = 7; // diskEvent |
368 |
Execute68kTrap(0xa02f, &r); // PostEvent() |
369 |
} else if (ReadMacInt8(info->status + dsDiskInPlace) > 0) { |
370 |
SysEject(info->fh); |
371 |
WriteMacInt8(info->status + dsDiskInPlace, 0); |
372 |
} |
373 |
return noErr; |
374 |
|
375 |
case 21: // Get drive icon |
376 |
case 22: // Get disk icon |
377 |
WriteMacInt32(pb + csParam, DiskIconAddr); |
378 |
return noErr; |
379 |
|
380 |
case 23: // Get drive info |
381 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
382 |
WriteMacInt32(pb + csParam, 0x0601); // Unspecified fixed SCSI disk |
383 |
else |
384 |
WriteMacInt32(pb + csParam, 0x0201); // Unspecified SCSI disk |
385 |
return noErr; |
386 |
|
387 |
case 24: // Get partition size |
388 |
if (ReadMacInt8(info->status + dsDiskInPlace) > 0) { |
389 |
WriteMacInt32(pb + csParam, info->num_blocks); |
390 |
return noErr; |
391 |
} else |
392 |
return offLinErr; |
393 |
|
394 |
default: |
395 |
printf("WARNING: Unknown DiskControl(%d)\n", code); |
396 |
return controlErr; |
397 |
} |
398 |
} |
399 |
|
400 |
|
401 |
/* |
402 |
* Driver Status() routine |
403 |
*/ |
404 |
|
405 |
int16 DiskStatus(uint32 pb, uint32 dce) |
406 |
{ |
407 |
drive_vec::iterator info = get_drive_info(ReadMacInt16(pb + ioVRefNum)); |
408 |
uint16 code = ReadMacInt16(pb + csCode); |
409 |
D(bug("DiskStatus %d\n", code)); |
410 |
|
411 |
// General codes (we can get these even if the drive was invalid) |
412 |
switch (code) { |
413 |
case 43: { // Driver gestalt |
414 |
uint32 sel = ReadMacInt32(pb + csParam); |
415 |
D(bug(" driver gestalt %c%c%c%c\n", sel >> 24, sel >> 16, sel >> 8, sel)); |
416 |
switch (sel) { |
417 |
case FOURCC('v','e','r','s'): // Version |
418 |
WriteMacInt32(pb + csParam + 4, 0x01008000); |
419 |
break; |
420 |
case FOURCC('d','e','v','t'): // Device type |
421 |
if (info != drives.end()) { |
422 |
if (ReadMacInt8(info->status + dsDiskInPlace) == 8) |
423 |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
424 |
else |
425 |
WriteMacInt32(pb + csParam + 4, FOURCC('r','d','s','k')); |
426 |
} else |
427 |
WriteMacInt32(pb + csParam + 4, FOURCC('d','i','s','k')); |
428 |
break; |
429 |
case FOURCC('i','n','t','f'): // Interface type |
430 |
WriteMacInt32(pb + csParam + 4, EMULATOR_ID_4); |
431 |
break; |
432 |
case FOURCC('s','y','n','c'): // Only synchronous operation? |
433 |
WriteMacInt32(pb + csParam + 4, 0x01000000); |
434 |
break; |
435 |
case FOURCC('b','o','o','t'): // Boot ID |
436 |
if (info != drives.end()) |
437 |
WriteMacInt16(pb + csParam + 4, info->num); |
438 |
else |
439 |
WriteMacInt16(pb + csParam + 4, 0); |
440 |
WriteMacInt16(pb + csParam + 6, (uint16)DiskRefNum); |
441 |
break; |
442 |
case FOURCC('w','i','d','e'): // 64-bit access supported? |
443 |
WriteMacInt16(pb + csParam + 4, 0x0100); |
444 |
break; |
445 |
case FOURCC('p','u','r','g'): // Purge flags |
446 |
WriteMacInt32(pb + csParam + 4, 0); |
447 |
break; |
448 |
case FOURCC('e','j','e','c'): // Eject flags |
449 |
WriteMacInt32(pb + csParam + 4, 0x00030003); // Don't eject on shutdown/restart |
450 |
break; |
451 |
case FOURCC('f','l','u','s'): // Flush flags |
452 |
WriteMacInt16(pb + csParam + 4, 0); |
453 |
break; |
454 |
case FOURCC('v','m','o','p'): // Virtual memory attributes |
455 |
WriteMacInt32(pb + csParam + 4, 0); // Drive not available for VM |
456 |
break; |
457 |
default: |
458 |
return statusErr; |
459 |
} |
460 |
return noErr; |
461 |
} |
462 |
} |
463 |
|
464 |
// Drive valid? |
465 |
if (info == drives.end()) |
466 |
return nsDrvErr; |
467 |
|
468 |
// Drive-specific codes |
469 |
switch (code) { |
470 |
case 8: // Get drive status |
471 |
Mac2Mac_memcpy(pb + csParam, info->status, 22); |
472 |
return noErr; |
473 |
|
474 |
default: |
475 |
printf("WARNING: Unknown DiskStatus(%d)\n", code); |
476 |
return statusErr; |
477 |
} |
478 |
} |
479 |
|
480 |
|
481 |
/* |
482 |
* Driver interrupt routine (1Hz) - check for volumes to be mounted |
483 |
*/ |
484 |
|
485 |
void DiskInterrupt(void) |
486 |
{ |
487 |
if (!acc_run_called) |
488 |
return; |
489 |
|
490 |
mount_mountable_volumes(); |
491 |
} |