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blkdev.cpp
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blkdev.cpp
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/*
* UAE - The Un*x Amiga Emulator
*
* lowlevel cd device glue, scsi emulator
*
* Copyright 2009-2013 Toni Wilen
*
*/
#include "sysconfig.h"
#include "sysdeps.h"
#include "options.h"
#include "memory.h"
#include "traps.h"
#include "blkdev.h"
#include "scsidev.h"
#include "savestate.h"
#include "crc32.h"
#include "threaddep/thread.h"
#include "execio.h"
#include "zfile.h"
#include "scsi.h"
#include "statusline.h"
#include "fsdb.h"
#ifdef RETROPLATFORM
#include "rp.h"
#endif
int log_scsiemu = 0;
#define PRE_INSERT_DELAY (3 * (currprefs.ntscmode ? 60 : 50))
struct blkdevstate
{
bool scsiemu;
int type;
struct device_functions *device_func;
int isopen;
int waspaused;
int delayed;
uae_sem_t sema;
int sema_cnt;
int current_pos;
int play_end_pos;
uae_u8 play_qcode[SUBQ_SIZE];
TCHAR newimagefile[256];
int imagechangetime;
bool cdimagefileinuse;
int wasopen;
bool mediawaschanged;
struct scsi_data_tape *tape;
bool showstatusline;
};
struct blkdevstate state[MAX_TOTAL_SCSI_DEVICES];
static bool dev_init;
/* convert minutes, seconds and frames -> logical sector number */
int msf2lsn (int msf)
{
int sector = (((msf >> 16) & 0xff) * 60 * 75 + ((msf >> 8) & 0xff) * 75 + ((msf >> 0) & 0xff));
sector -= 150;
return sector;
}
/* convert logical sector number -> minutes, seconds and frames */
int lsn2msf (int sectors)
{
int msf;
sectors += 150;
msf = (sectors / (75 * 60)) << 16;
msf |= ((sectors / 75) % 60) << 8;
msf |= (sectors % 75) << 0;
return msf;
}
uae_u8 frombcd (uae_u8 v)
{
return (v >> 4) * 10 + (v & 15);
}
uae_u8 tobcd (uae_u8 v)
{
return ((v / 10) << 4) | (v % 10);
}
int fromlongbcd (uae_u8 *p)
{
return (frombcd (p[0]) << 16) | (frombcd (p[1]) << 8) | (frombcd (p[2]) << 0);
}
void tolongbcd (uae_u8 *p, int v)
{
p[0] = tobcd ((v >> 16) & 0xff);
p[1] = tobcd ((v >> 8) & 0xff);
p[2] = tobcd ((v >> 0) & 0xff);
}
static struct cd_toc *gettoc (int unitnum, struct cd_toc_head *th, int block)
{
if (th->lastaddress == 0) {
if (unitnum < 0)
return NULL;
if (!sys_command_cd_toc(unitnum, th))
return NULL;
}
for (int i = th->first_track_offset + 1; i <= th->last_track_offset; i++) {
struct cd_toc *t = &th->toc[i];
if (block < t->paddress)
return t - 1;
}
return &th->toc[th->last_track_offset];
}
int cdtracknumber(struct cd_toc_head *th, int block)
{
struct cd_toc *t = gettoc(-1, th, block);
if (!t)
return -1;
return t->track;
}
int isaudiotrack (struct cd_toc_head *th, int block)
{
struct cd_toc *t = gettoc (-1, th, block);
if (!t)
return 0;
return (t->control & 0x0c) != 4;
}
int isdatatrack (struct cd_toc_head *th, int block)
{
return !isaudiotrack (th, block);
}
static int cdscsidevicetype[MAX_TOTAL_SCSI_DEVICES];
static struct device_functions *devicetable[] = {
NULL,
&devicefunc_cdimage,
#ifdef WITH_SCSI_IOCTL
&devicefunc_scsi_ioctl,
#else
NULL,
#endif
#ifdef WITH_SCSI_SPTI
&devicefunc_scsi_spti,
#else
NULL,
#endif
};
#define NUM_DEVICE_TABLE_ENTRIES 4
static int driver_installed[NUM_DEVICE_TABLE_ENTRIES];
static void install_driver (int flags)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
st->scsiemu = false;
st->type = -1;
st->device_func = NULL;
}
if (flags > 0) {
state[0].device_func = devicetable[flags];
state[0].scsiemu = true;
} else {
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
st->scsiemu = false;
st->device_func = NULL;
switch (cdscsidevicetype[i])
{
case SCSI_UNIT_IMAGE:
st->device_func = devicetable[SCSI_UNIT_IMAGE];
st->scsiemu = true;
break;
case SCSI_UNIT_IOCTL:
st->device_func = devicetable[SCSI_UNIT_IOCTL];
st->scsiemu = true;
break;
case SCSI_UNIT_SPTI:
if (currprefs.win32_uaescsimode == UAESCSI_CDEMU) {
st->device_func = devicetable[SCSI_UNIT_IOCTL];
st->scsiemu = true;
} else {
st->device_func = devicetable[SCSI_UNIT_SPTI];
}
break;
}
// do not default to image mode if unit 1+ and automount
if (i == 0 || !currprefs.win32_automount_cddrives) {
// use image mode if driver disabled
for (int j = 1; j < NUM_DEVICE_TABLE_ENTRIES; j++) {
if (devicetable[j] == st->device_func && driver_installed[j] < 0) {
st->device_func = devicetable[SCSI_UNIT_IMAGE];
st->scsiemu = true;
}
}
}
}
}
for (int j = 1; j < NUM_DEVICE_TABLE_ENTRIES; j++) {
if (devicetable[j] == NULL) {
continue;
}
if (!driver_installed[j]) {
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
if (st->device_func == devicetable[j]) {
int ok = st->device_func->openbus (0);
if (!ok && st->device_func != devicetable[SCSI_UNIT_IMAGE]) {
st->device_func = devicetable[SCSI_UNIT_IMAGE];
st->scsiemu = true;
write_log (_T("Fallback to image mode, unit %d.\n"), i);
driver_installed[j] = -1;
} else {
driver_installed[j] = 1;
}
write_log (_T("%s driver installed, ok=%d\n"), st->device_func->name, ok);
break;
}
}
}
}
}
void blkdev_default_prefs (struct uae_prefs *p)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
p->cdslots[i].name[0] = 0;
p->cdslots[i].inuse = false;
p->cdslots[i].type = SCSI_UNIT_DEFAULT;
p->cdslots[i].temporary = false;
cdscsidevicetype[i] = SCSI_UNIT_DEFAULT;
}
}
void blkdev_fix_prefs (struct uae_prefs *p)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
cdscsidevicetype[i] = p->cdslots[i].type;
if (p->cdslots[i].inuse == false && p->cdslots[i].name[0] && p->cdslots[i].type != SCSI_UNIT_DISABLED)
p->cdslots[i].inuse = true;
}
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
if (cdscsidevicetype[i] != SCSI_UNIT_DEFAULT && (currprefs.scsi == 0 || currprefs.win32_uaescsimode < UAESCSI_SPTI))
continue;
if (p->cdslots[i].inuse || p->cdslots[i].name[0]) {
TCHAR *name = p->cdslots[i].name;
if (_tcslen (name) == 3 && name[1] == ':' && name[2] == '\\') {
if (currprefs.scsi && (currprefs.win32_uaescsimode == UAESCSI_SPTI || currprefs.win32_uaescsimode == UAESCSI_SPTISCAN))
cdscsidevicetype[i] = SCSI_UNIT_SPTI;
else
cdscsidevicetype[i] = SCSI_UNIT_IOCTL;
} else {
cdscsidevicetype[i] = SCSI_UNIT_IMAGE;
}
} else if (currprefs.scsi) {
if (currprefs.win32_uaescsimode == UAESCSI_CDEMU)
cdscsidevicetype[i] = SCSI_UNIT_IOCTL;
else
cdscsidevicetype[i] = SCSI_UNIT_SPTI;
} else {
cdscsidevicetype[i] = SCSI_UNIT_IOCTL;
}
}
}
static bool getsem (int unitnum, bool dowait)
{
struct blkdevstate *st = &state[unitnum];
if (st->sema == NULL)
uae_sem_init (&st->sema, 0, 1);
bool gotit = false;
if (dowait) {
uae_sem_wait (&st->sema);
gotit = true;
} else {
gotit = uae_sem_trywait (&st->sema) == 0;
}
if (gotit)
st->sema_cnt++;
if (st->sema_cnt > 1)
write_log (_T("CD: unitsem%d acquire mismatch! cnt=%d\n"), unitnum, st->sema_cnt);
return gotit;
}
static bool getsem (int unitnum)
{
return getsem (unitnum, false);
}
static void freesem (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
st->sema_cnt--;
if (st->sema_cnt < 0)
write_log (_T("CD: unitsem%d release mismatch! cnt=%d\n"), unitnum, st->sema_cnt);
uae_sem_post (&st->sema);
}
static void sys_command_close_internal (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
getsem (unitnum, true);
st->waspaused = 0;
if (st->isopen <= 0)
write_log (_T("BUG unit %d close: opencnt=%d!\n"), unitnum, st->isopen);
if (st->device_func) {
state[unitnum].device_func->closedev (unitnum);
if (st->isopen > 0)
st->isopen--;
}
freesem (unitnum);
if (st->isopen == 0) {
uae_sem_destroy (&st->sema);
st->sema = NULL;
}
}
static int sys_command_open_internal (int unitnum, const TCHAR *ident, cd_standard_unit csu)
{
struct blkdevstate *st = &state[unitnum];
int ret = 0;
if (st->sema == NULL)
uae_sem_init (&st->sema, 0, 1);
getsem (unitnum, true);
if (st->isopen)
write_log (_T("BUG unit %d open: opencnt=%d!\n"), unitnum, st->isopen);
if (st->device_func) {
ret = state[unitnum].device_func->opendev (unitnum, ident, csu != CD_STANDARD_UNIT_DEFAULT);
if (ret)
st->isopen++;
}
freesem (unitnum);
return ret;
}
static int getunitinfo (int unitnum, int drive, cd_standard_unit csu, int *isaudio)
{
struct device_info di;
if (sys_command_info (unitnum, &di, 0)) {
write_log (_T("Scanning drive %s: "), di.label);
if (di.media_inserted) {
if (isaudiotrack (&di.toc, 0)) {
if (*isaudio == 0)
*isaudio = drive;
write_log (_T("CDA"));
}
uae_u8 buffer[2048];
if (sys_command_cd_read (unitnum, buffer, 16, 1)) {
if (!memcmp (buffer + 8, "CDTV", 4) || !memcmp (buffer + 8, "CD32", 4) || !memcmp (buffer + 8, "COMM", 4)) {
uae_u32 crc;
write_log (_T("CD32 or CDTV"));
if (sys_command_cd_read (unitnum, buffer, 21, 1)) {
crc = get_crc32 (buffer, sizeof buffer);
if (crc == 0xe56c340f) {
write_log (_T(" [CD32.TM]"));
if (csu == CD_STANDARD_UNIT_CD32) {
write_log (_T("\n"));
return 1;
}
}
}
if (csu == CD_STANDARD_UNIT_CDTV || csu == CD_STANDARD_UNIT_CD32) {
write_log (_T("\n"));
return 1;
}
}
}
} else {
write_log (_T("no media"));
}
}
write_log (_T("\n"));
return 0;
}
static int get_standard_cd_unit2 (struct uae_prefs *p, cd_standard_unit csu)
{
int unitnum = 0;
int isaudio = 0;
if (p->cdslots[unitnum].name[0] || p->cdslots[unitnum].inuse) {
if (p->cdslots[unitnum].name[0]) {
device_func_init (SCSI_UNIT_IOCTL);
if (!sys_command_open_internal (unitnum, p->cdslots[unitnum].name, csu)) {
device_func_init (SCSI_UNIT_IMAGE);
if (!sys_command_open_internal (unitnum, p->cdslots[unitnum].name, csu))
goto fallback;
}
} else {
goto fallback;
}
return unitnum;
}
device_func_init (SCSI_UNIT_IOCTL);
for (int drive = 'C'; drive <= 'Z'; ++drive) {
TCHAR vol[100];
_stprintf (vol, _T("%c:\\"), drive);
int drivetype = GetDriveType (vol);
if (drivetype == DRIVE_CDROM) {
if (sys_command_open_internal (unitnum, vol, csu)) {
if (getunitinfo (unitnum, drive, csu, &isaudio))
return unitnum;
sys_command_close (unitnum);
}
}
}
if (isaudio) {
TCHAR vol[100];
_stprintf (vol, _T("%c:\\"), isaudio);
if (sys_command_open_internal (unitnum, vol, csu))
return unitnum;
}
fallback:
device_func_init (SCSI_UNIT_IMAGE);
if (!sys_command_open_internal (unitnum, _T(""), csu)) {
write_log (_T("image mounter failed to open as empty!?\n"));
return -1;
}
return unitnum;
}
static void cd_statusline_label(int unitnum)
{
TCHAR *p = currprefs.cdslots[unitnum].name;
if (p[0]) {
TCHAR name[MAX_DPATH];
struct device_info di;
cfgfile_resolve_path_out_load(p, name, sizeof(name) / sizeof(TCHAR), PATH_CD);
const TCHAR *fname = my_getfilepart(name);
if (sys_command_info(unitnum, &di, 0) && di.volume_id[0])
statusline_add_message(STATUSTYPE_CD, _T("CD%d: [%s] %s"), unitnum, di.volume_id, fname);
else
statusline_add_message(STATUSTYPE_CD, _T("CD%d: %s"), unitnum, fname);
}
}
int get_standard_cd_unit (cd_standard_unit csu)
{
int unitnum = get_standard_cd_unit2 (&currprefs, csu);
if (unitnum < 0)
return -1;
struct blkdevstate *st = &state[unitnum];
#ifdef RETROPLATFORM
rp_cd_device_enable (unitnum, true);
#endif
st->delayed = 0;
if (currprefs.cdslots[unitnum].delayed) {
st->delayed = PRE_INSERT_DELAY;
}
st->showstatusline = true;
return unitnum;
}
void close_standard_cd_unit (int unitnum)
{
sys_command_close (unitnum);
}
int sys_command_isopen (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
return st->isopen;
}
int sys_command_open_tape (int unitnum, const TCHAR *tape_directory, bool readonly)
{
struct blkdevstate *st = &state[unitnum];
if (st->isopen == 0) {
struct scsi_data_tape *tape = tape_alloc (unitnum, tape_directory, readonly);
if (!tape)
return 0;
st->tape = tape;
}
st->isopen++;
return 1;
}
int sys_command_open (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
blkdev_fix_prefs (&currprefs);
if (!dev_init) {
device_func_init (0);
}
if (st->isopen) {
st->isopen++;
return -1;
}
st->waspaused = 0;
int v = sys_command_open_internal (unitnum, currprefs.cdslots[unitnum].name[0] ? currprefs.cdslots[unitnum].name : NULL, CD_STANDARD_UNIT_DEFAULT);
if (!v)
return 0;
#ifdef RETROPLATFORM
rp_cd_device_enable (unitnum, true);
#endif
return v;
}
void sys_command_close (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
if (st->isopen > 1) {
st->isopen--;
return;
}
if (st->tape) {
tape_free (st->tape);
st->tape = NULL;
}
sys_command_close_internal (unitnum);
}
void blkdev_cd_change (int unitnum, const TCHAR *name)
{
struct device_info di;
sys_command_info (unitnum, &di, 1);
#ifdef RETROPLATFORM
rp_cd_image_change (unitnum, name);
#endif
}
void device_func_reset(void)
{
// if reset during delayed CD change, re-insert the CD immediately
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
if (st->imagechangetime > 0 && st->newimagefile[0] && !currprefs.cdslots[i].name[0]) {
_tcscpy(changed_prefs.cdslots[i].name, st->newimagefile);
_tcscpy(currprefs.cdslots[i].name, st->newimagefile);
cd_statusline_label(i);
}
st->imagechangetime = 0;
st->newimagefile[0] = 0;
st->mediawaschanged = false;
st->waspaused = false;
}
}
void device_func_free(void)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
st->wasopen = 0;
st->waspaused = false;
st->mediawaschanged = false;
st->imagechangetime = 0;
st->cdimagefileinuse = false;
st->newimagefile[0] = 0;
}
dev_init = false;
}
int device_func_init (int flags)
{
blkdev_fix_prefs (&currprefs);
install_driver (flags);
dev_init = true;
return 1;
}
bool blkdev_get_info (struct uae_prefs *p, int unitnum, struct device_info *di)
{
bool open = true, opened = false, ok = false;
struct blkdevstate *st = &state[unitnum];
if (!st->isopen) {
blkdev_fix_prefs (p);
install_driver (0);
opened = true;
open = sys_command_open_internal (unitnum, p->cdslots[unitnum].name[0] ? p->cdslots[unitnum].name : NULL, CD_STANDARD_UNIT_DEFAULT) != 0;
}
if (open) {
ok = sys_command_info (unitnum, di, true) != 0;
}
if (open && opened)
sys_command_close_internal (unitnum);
return ok;
}
void blkdev_entergui (void)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
st->waspaused = 0;
struct device_info di;
if (sys_command_info (i, &di, 1)) {
if (sys_command_cd_pause (i, 1) == 0)
st->waspaused = 1;
}
}
}
void blkdev_exitgui (void)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++) {
struct blkdevstate *st = &state[i];
if (st->waspaused) {
struct device_info di;
if (sys_command_info (i, &di, 1)) {
sys_command_cd_pause (i, 0);
}
}
st->waspaused = 0;
}
}
void check_prefs_changed_cd (void)
{
if (!config_changed)
return;
}
static void check_changes (int unitnum)
{
struct blkdevstate *st = &state[unitnum];
bool changed = false;
bool gotsem = false;
if (st->device_func == NULL)
return;
if (st->showstatusline) {
cd_statusline_label(unitnum);
st->showstatusline = 0;
}
if (st->delayed) {
st->delayed--;
if (st->delayed == 0)
write_log (_T("CD: startup delayed insert '%s'\n"), currprefs.cdslots[unitnum].name[0] ? currprefs.cdslots[unitnum].name : _T("<EMPTY>"));
return;
}
if (_tcscmp (changed_prefs.cdslots[unitnum].name, currprefs.cdslots[unitnum].name) != 0)
changed = true;
if (!changed && changed_prefs.cdslots[unitnum].name[0] == 0 && changed_prefs.cdslots[unitnum].inuse != currprefs.cdslots[unitnum].inuse)
changed = true;
if (changed) {
bool wasimage = currprefs.cdslots[unitnum].name[0] != 0;
if (st->sema)
gotsem = getsem (unitnum, true);
st->cdimagefileinuse = changed_prefs.cdslots[unitnum].inuse;
_tcscpy (st->newimagefile, changed_prefs.cdslots[unitnum].name);
changed_prefs.cdslots[unitnum].name[0] = currprefs.cdslots[unitnum].name[0] = 0;
currprefs.cdslots[unitnum].inuse = changed_prefs.cdslots[unitnum].inuse;
int pollmode = 0;
st->imagechangetime = 3 * 50;
struct device_info di;
st->device_func->info (unitnum, &di, 0, -1);
if (st->wasopen >= 0)
st->wasopen = di.open ? 1 : 0;
if (st->wasopen) {
st->device_func->closedev (unitnum);
st->wasopen = -1;
if (currprefs.scsi) {
scsi_do_disk_change (unitnum, 0, &pollmode);
if (pollmode)
st->imagechangetime = 8 * 50;
if (filesys_do_disk_change (unitnum, 0)) {
st->imagechangetime = st->newimagefile[0] ? 3 * 50 : 0;
pollmode = 0;
}
}
}
write_log (_T("CD: eject (%s) open=%d\n"), pollmode ? _T("slow") : _T("fast"), st->wasopen ? 1 : 0);
if (wasimage)
statusline_add_message(STATUSTYPE_CD, _T("CD%d: -"), unitnum);
#ifdef RETROPLATFORM
rp_cd_image_change (unitnum, NULL);
#endif
if (gotsem) {
freesem (unitnum);
gotsem = false;
}
}
if (st->imagechangetime == 0)
return;
st->imagechangetime--;
if (st->imagechangetime > 0)
return;
if (st->sema)
gotsem = getsem (unitnum, true);
_tcscpy (currprefs.cdslots[unitnum].name, st->newimagefile);
_tcscpy (changed_prefs.cdslots[unitnum].name, st->newimagefile);
currprefs.cdslots[unitnum].inuse = changed_prefs.cdslots[unitnum].inuse = st->cdimagefileinuse;
st->newimagefile[0] = 0;
write_log (_T("CD: delayed insert '%s' (open=%d,unit=%d)\n"), currprefs.cdslots[unitnum].name[0] ? currprefs.cdslots[unitnum].name : _T("<EMPTY>"), st->wasopen ? 1 : 0, unitnum);
device_func_init (0);
if (st->wasopen) {
if (!st->device_func->opendev (unitnum, currprefs.cdslots[unitnum].name, 0)) {
write_log (_T("-> device open failed\n"));
st->wasopen = 0;
} else {
st->wasopen = 1;
write_log (_T("-> device reopened\n"));
}
}
if (currprefs.scsi && st->wasopen) {
struct device_info di;
st->device_func->info (unitnum, &di, 0, -1);
int pollmode;
if (gotsem) {
freesem (unitnum);
gotsem = false;
}
scsi_do_disk_change (unitnum, 1, &pollmode);
filesys_do_disk_change (unitnum, 1);
}
st->mediawaschanged = true;
st->showstatusline = true;
if (gotsem) {
freesem (unitnum);
gotsem = false;
}
#ifdef RETROPLATFORM
rp_cd_image_change (unitnum, currprefs.cdslots[unitnum].name);
#endif
set_config_changed ();
}
void blkdev_vsync (void)
{
for (int i = 0; i < MAX_TOTAL_SCSI_DEVICES; i++)
check_changes (i);
}
static int do_scsi (int unitnum, uae_u8 *cmd, int cmdlen)
{
uae_u8 *p = state[unitnum].device_func->exec_out (unitnum, cmd, cmdlen);
return p != NULL;
}
static int do_scsi (int unitnum, uae_u8 *cmd, int cmdlen, uae_u8 *out, int outsize)
{
uae_u8 *p = state[unitnum].device_func->exec_in (unitnum, cmd, cmdlen, &outsize);
if (p)
memcpy (out, p, outsize);
return p != NULL;
}
static int failunit (int unitnum)
{
if (unitnum < 0 || unitnum >= MAX_TOTAL_SCSI_DEVICES)
return 1;
if (state[unitnum].device_func == NULL)
return 1;
return 0;
}
static int audiostatus (int unitnum)
{
if (!getsem (unitnum))
return 0;
uae_u8 cmd[10] = {0x42,2,0x40,1,0,0,0,(uae_u8)(DEVICE_SCSI_BUFSIZE>>8),(uae_u8)(DEVICE_SCSI_BUFSIZE&0xff),0};
uae_u8 *p = state[unitnum].device_func->exec_in (unitnum, cmd, sizeof (cmd), 0);
freesem (unitnum);
if (!p)
return 0;
return p[1];
}
/* pause/unpause CD audio */
int sys_command_cd_pause (int unitnum, int paused)
{
if (failunit (unitnum))
return -1;
if (!getsem (unitnum))
return 0;
int v;
if (state[unitnum].device_func->pause == NULL) {
int as = audiostatus (unitnum);
uae_u8 cmd[10] = {0x4b,0,0,0,0,0,0,0,(uae_u8)(paused?0:1),0};
do_scsi (unitnum, cmd, sizeof cmd);
v = as == AUDIO_STATUS_PAUSED;
} else {
v = state[unitnum].device_func->pause (unitnum, paused);
}
freesem (unitnum);
return v;
}
/* stop CD audio */
void sys_command_cd_stop (int unitnum)
{
if (failunit (unitnum))
return;
if (!getsem (unitnum))
return;
if (state[unitnum].device_func->stop == NULL) {
int as = audiostatus (unitnum);
uae_u8 cmd[6] = {0x4e,0,0,0,0,0};
do_scsi (unitnum, cmd, sizeof cmd);
} else {
state[unitnum].device_func->stop (unitnum);
}
freesem (unitnum);
}
/* play CD audio */
int sys_command_cd_play (int unitnum, int startlsn, int endlsn, int scan)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
state[unitnum].play_end_pos = endlsn;
if (state[unitnum].device_func->play == NULL) {
uae_u8 cmd[12] = {0,0,0,0,0,0,0,0,0,0,0,0};
int startmsf = lsn2msf (startlsn);
int endmsf = lsn2msf (endlsn);
cmd[0] = 0x47;
cmd[3] = (uae_u8)(startmsf >> 16);
cmd[4] = (uae_u8)(startmsf >> 8);
cmd[5] = (uae_u8)(startmsf >> 0);
cmd[6] = (uae_u8)(endmsf >> 16);
cmd[7] = (uae_u8)(endmsf >> 8);
cmd[8] = (uae_u8)(endmsf >> 0);
v = do_scsi (unitnum, cmd, sizeof cmd) ? 0 : 1;
} else {
v = state[unitnum].device_func->play (unitnum, startlsn, endlsn, scan, NULL, NULL);
}
freesem (unitnum);
return v;
}
/* play CD audio with subchannels */
int sys_command_cd_play (int unitnum, int startlsn, int endlsn, int scan, play_status_callback statusfunc, play_subchannel_callback subfunc)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
state[unitnum].play_end_pos = endlsn;
if (state[unitnum].device_func->play == NULL)
v = sys_command_cd_play (unitnum, startlsn, endlsn, scan);
else
v = state[unitnum].device_func->play (unitnum, startlsn, endlsn, scan, statusfunc, subfunc);
freesem (unitnum);
return v;
}
/* set CD audio volume */
uae_u32 sys_command_cd_volume (int unitnum, uae_u16 volume_left, uae_u16 volume_right)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->volume == NULL)
v = -1;
else
v = state[unitnum].device_func->volume (unitnum, volume_left, volume_right);
freesem (unitnum);
return v;
}
/* read qcode */
int sys_command_cd_qcode (int unitnum, uae_u8 *buf, int sector, bool all)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->qcode == NULL) {
if (all) {
v = 0;
} else {
uae_u8 cmd[10] = {0x42,2,0x40,1,0,0,0,(uae_u8)(SUBQ_SIZE>>8),(uae_u8)(SUBQ_SIZE&0xff),0};
v = do_scsi (unitnum, cmd, sizeof cmd, buf, SUBQ_SIZE);
}
} else {
v = state[unitnum].device_func->qcode (unitnum, buf, sector, all);
}
freesem (unitnum);
return v;
};
/* read table of contents */
int sys_command_cd_toc (int unitnum, struct cd_toc_head *th)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->toc == NULL) {
uae_u8 buf[4 + 8 * 103];
int size = sizeof buf;
uae_u8 cmd [10] = { 0x43,0,0,0,0,0,0,(uae_u8)(size>>8),(uae_u8)(size&0xff),0};
v = do_scsi(unitnum, cmd, sizeof cmd, buf, size);
if (v > 0) {
th->first_track = buf[2];
th->last_track = buf[3];
th->tracks = th->last_track - th->first_track + 1;
th->firstaddress = 0;
th->points = th->tracks + 1;
int len = (buf[0] << 8) | buf[1];
uae_u8 *p = buf + 4;
if ((th->tracks + 1) * 8 > len) {
freesem(unitnum);
return 0;
}
struct cd_toc *t = &th->toc[th->first_track];
for (int i = th->first_track; i <= th->last_track; i++) {
t->adr = p[1] >> 4;
t->control = p[1] & 15;
t->point = t->track = p[2];
t->paddress = (p[5] << 16) | (p[6] << 8) | (p[7] << 0);
p += 8;
t++;
}
th->lastaddress = (p[5] << 16) | (p[6] << 8) | (p[7] << 0);
t->track = t->point = 0xaa;
th->first_track_offset = 0;
th->last_track_offset = th->last_track;
v = 1;
}
} else {
v = state[unitnum].device_func->toc (unitnum, th);
}
freesem (unitnum);
return v;
}
/* read one cd sector */
int sys_command_cd_read (int unitnum, uae_u8 *data, int block, int size)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->read == NULL) {
uae_u8 cmd1[12] = { 0x28, 0, (uae_u8)(block >> 24), (uae_u8)(block >> 16), (uae_u8)(block >> 8), (uae_u8)(block >> 0), 0, (uae_u8)(size >> 8), (uae_u8)(size >> 0), 0, 0, 0 };
v = do_scsi (unitnum, cmd1, sizeof cmd1, data, size * 2048);
#if 0
if (!v) {
uae_u8 cmd2[12] = { 0xbe, 0, block >> 24, block >> 16, block >> 8, block >> 0, size >> 16, size >> 8, size >> 0, 0x10, 0, 0 };
v = do_scsi (unitnum, cmd2, sizeof cmd2, data, size * 2048);
}
#endif
} else {
v = state[unitnum].device_func->read (unitnum, data, block, size);
}
freesem (unitnum);
return v;
}
int sys_command_cd_rawread (int unitnum, uae_u8 *data, int block, int size, int sectorsize)
{
int v;
if (failunit (unitnum))
return -1;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->rawread == NULL) {
uae_u8 cmd[12] = { 0xbe, 0, (uae_u8)(block >> 24), (uae_u8)(block >> 16), (uae_u8)(block >> 8), (uae_u8)(block >> 0), (uae_u8)(size >> 16), (uae_u8)(size >> 8), (uae_u8)(size >> 0), 0x10, 0, 0 };
v = do_scsi (unitnum, cmd, sizeof cmd, data, size * sectorsize);
} else {
v = state[unitnum].device_func->rawread (unitnum, data, block, size, sectorsize, 0xffffffff);
}
freesem (unitnum);
return v;
}
int sys_command_cd_rawread (int unitnum, uae_u8 *data, int block, int size, int sectorsize, uae_u8 sectortype, uae_u8 scsicmd9, uae_u8 subs)
{
int v;
if (failunit (unitnum))
return -1;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->rawread == NULL) {
uae_u8 cmd[12] = { 0xbe, 0, (uae_u8)(block >> 24), (uae_u8)(block >> 16), (uae_u8)(block >> 8), (uae_u8)(block >> 0), (uae_u8)(size >> 16), (uae_u8)(size >> 8), (uae_u8)(size >> 0), 0x10, 0, 0 };
v = do_scsi (unitnum, cmd, sizeof cmd, data, size * sectorsize);
} else {
v = state[unitnum].device_func->rawread (unitnum, data, block, size, sectorsize, (sectortype << 16) | (scsicmd9 << 8) | subs);
}
freesem (unitnum);
return v;
}
/* read block */
int sys_command_read (int unitnum, uae_u8 *data, int block, int size)
{
int v;
if (failunit (unitnum))
return 0;
if (!getsem (unitnum))
return 0;
if (state[unitnum].device_func->read == NULL) {
uae_u8 cmd[12] = { 0xa8, 0, 0, 0, 0, 0, (uae_u8)(size >> 24), (uae_u8)(size >> 16), (uae_u8)(size >> 8), (uae_u8)(size >> 0), 0, 0 };
cmd[2] = (uae_u8)(block >> 24);
cmd[3] = (uae_u8)(block >> 16);
cmd[4] = (uae_u8)(block >> 8);
cmd[5] = (uae_u8)(block >> 0);