static int __init
ps2mcfs_init()
{
TRACE("ps2mcfs_init()\n");
printk("PlayStation 2 Memory Card file system\n");
init_completion(&thread_comp);
if ((ps2mcfs_lock = ps2sif_getlock(PS2LOCK_MC)) == NULL) {
printk(KERN_ERR "ps2mcfs: Can't get lock\n");
return (-1);
}
#ifdef PS2MCFS_DEBUG
if (ps2mcfs_debug & DBG_LOCK) {
oldflags = ps2sif_getlockflags(ps2mcfs_lock);
ps2sif_setlockflags(ps2mcfs_lock,
(oldflags | PS2LOCK_FLAG_DEBUG));
}
#endif
if (ps2sif_lock_interruptible(ps2mcfs_lock, "mcfs init") < 0)
return (-1);
if (ps2mcfs_init_filebuf() < 0 ||
ps2mcfs_init_pathcache() < 0 ||
ps2mcfs_init_fdcache() < 0 ||
ps2mcfs_init_dirent() < 0 ||
ps2mcfs_init_root() < 0)
goto error;
/*
* hook block device read/write routine
*/
if (ps2mc_blkrw_hook == NULL)
ps2mc_blkrw_hook = ps2mcfs_blkrw;
/*
* create and start thread
*/
kernel_thread(ps2mcfs_thread, NULL, 0);
wait_for_completion(&thread_comp); /* wait the thread ready */
if (register_filesystem(&ps2mcfs_fs_type) < 0)
goto error;
ps2sif_unlock(ps2mcfs_lock);
return (0);
error:
ps2mcfs_cleanup();
ps2sif_unlock(ps2mcfs_lock);
return (-1);
}
int
ps2sdmixer_setvol(struct ps2sd_mixer_channel *ch, int volr, int voll)
{
int res;
if (volr < 0) volr = 0;
if (100 < volr) volr = 100;
if (voll < 0) voll = 0;
if (100 < voll) voll = 100;
if (ch->mixer != NULL)
ch->mixer->modified++;
ch->volr = volr;
ch->voll = voll;
ch->vol = (volr << 8) | voll;
volr = volr * ch->scale / 100;
voll = voll * ch->scale / 100;
DPRINT(DBG_MIXER, "%14s R=%04x/L=%04x\n", ch->name, volr, voll);
res = ps2sif_lock_interruptible(ps2sd_mc.lock, "mixer volume");
if (res < 0)
return res;
if (ch->regr != -1) {
res = ps2sdcall_set_reg(ch->regr, volr);
if (res < 0) {
DPRINT(DBG_DIAG, "%s R=%04x/L=%04x: failed, res=%d\n",
ch->name, volr, voll, res);
goto unlock_and_return;
}
}
if (ch->regl != -1) {
res = ps2sdcall_set_reg(ch->regl, voll);
if (res < 0) {
DPRINT(DBG_DIAG, "%s R=%04x/L=%04x: failed, res=%d\n",
ch->name, volr, voll, res);
goto unlock_and_return;
}
}
unlock_and_return:
ps2sif_unlock(ps2sd_mc.lock);
return res;
}
int
ps2mc_close(int fd)
{
int res, result;
res = ps2sif_lock_interruptible(ps2mc_lock, "mc close");
if (res < 0)
return (res);
if (fd < 0 || MAXFILEDESC <= fd || !(openedfd & (1 << fd))) {
ps2sif_unlock(ps2mc_lock);
return -EBADF;
}
res = 0;
if (ps2mclib_Close(fd, &result) != 0) {
/* error */
printk("ps2mclib_Close() failed\n");
res = -EIO;
goto out;
}
DPRINT(DBG_INFO, "close(): result=%d\n", result);
switch (result) {
case 0: /* succeeded */
break;
case 4: /* Bad file number */
res = -EBADF;
break;
default:
res = -EIO;
break;
}
out:
openedfd &= ~(1 << fd);
ps2sif_unlock(ps2mc_lock);
up(&ps2mc_filesem);
DPRINT(DBG_FILESEM, "UP file sem(->%d)\n",
ps2mc_filesem.count.counter);
return (res);
}
static int
ps2mcfs_thread(void *arg)
{
DPRINT(DBG_INFO, "start thread\n");
lock_kernel();
/* get rid of all our resources related to user space */
daemonize();
siginitsetinv(¤t->blocked,
sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGTERM));
/* Set the name of this process. */
sprintf(current->comm, "ps2mcfs");
unlock_kernel();
thread_task = current;
complete(&thread_comp); /* notify that we are ready */
/*
* loop
*/
while(1) {
if (ps2sif_lock_interruptible(ps2mcfs_lock, "mcfs_thread")==0){
ps2mcfs_check_fd();
ps2sif_unlock(ps2mcfs_lock);
}
interruptible_sleep_on_timeout(&thread_wq,
PS2MCFS_CHECK_INTERVAL);
if (signal_pending(current) )
break;
}
DPRINT(DBG_INFO, "exit thread\n");
thread_task = NULL;
complete(&thread_comp); /* notify that we've exited */
return (0);
}
ssize_t
ps2mc_read(int fd, const void *buf, size_t size)
{
int res, result;
res = ps2sif_lock_interruptible(ps2mc_lock, "mc read");
if (res < 0)
return (res);
res = 0;
if (ps2mclib_Read(fd, (char*)buf, size, &result) != 0) {
/* error */
printk("ps2mclib_Read() failed\n");
res = -EIO;
goto out;
}
DPRINT(DBG_INFO, "read(): result=%d\n", result);
if (0 <= result) {
/* succeeded */
res = result;
} else {
switch (result) {
case -4: /* Bad file number */
res = -EBADF;
break;
case -5: /* Operation not permitted */
res = -EPERM;
break;
default:
res = -EIO;
break;
}
}
out:
ps2sif_unlock(ps2mc_lock);
return (res);
}
off_t
ps2mc_lseek(int fd, off_t offset, int whence)
{
int res, result;
res = ps2sif_lock_interruptible(ps2mc_lock, "mc lseek");
if (res < 0)
return (res);
res = 0;
if (ps2mclib_Seek(fd, offset, whence, &result) != 0) {
/* error */
printk("ps2mclib_Seek() failed\n");
res = -EIO;
goto out;
}
DPRINT(DBG_INFO, "lseek(): result=%d\n", result);
if (0 <= result) {
/* succeeded */
res = result;
} else {
switch (result) {
case 4: /* Bad file number */
res = -EBADF;
break;
default:
res = -EIO;
break;
}
}
out:
ps2sif_unlock(ps2mc_lock);
return (res);
}
int
ps2mc_open(int portslot, const char *path, int mode)
{
int res, result;
int iopflags;
switch (mode & O_ACCMODE) {
case O_RDONLY:
iopflags = McRDONLY;
break;
case O_WRONLY:
iopflags = McWRONLY;
break;
case O_RDWR:
iopflags = McRDWR;
break;
default:
return -EINVAL;
}
if (mode & O_CREAT)
iopflags |= McCREAT;
if ((res = down_interruptible(&ps2mc_filesem)) < 0)
return (res);
DPRINT(DBG_FILESEM, "DOWN file sem(->%d)\n",
ps2mc_filesem.count.counter);
res = ps2sif_lock_interruptible(ps2mc_lock, "mc open");
if (res < 0) {
up(&ps2mc_filesem);
return (res);
}
if (mode & O_CREAT) {
/*
* This might create a new entry, thereby,
* invalidate directory cache.
*/
ps2mc_dircache_invalidate(portslot);
}
res = 0;
if (ps2mclib_Open(PS2MC_PORT(portslot), PS2MC_SLOT(portslot),
(char *)path, iopflags, &result) != 0) {
/* error */
printk("ps2mclib_Open() failed\n");
res = -EIO;
goto out;
}
DPRINT(DBG_INFO, "open(): card%d%d %s result=%d\n",
PS2MC_PORT(portslot), PS2MC_SLOT(portslot), path, result);
if (0 <= result) {
/* succeeded */
res = result;
} else {
switch (result) {
case -7: /* Too many open files */
res = -EMFILE;
break;
default:
res = -EIO;
break;
}
}
out:
if (res < 0) {
ps2sif_unlock(ps2mc_lock);
up(&ps2mc_filesem);
DPRINT(DBG_FILESEM, "UP file sem(->%d)\n",
ps2mc_filesem.count.counter);
} else {
if (MAXFILEDESC <= res) {
printk(KERN_CRIT "ps2mc: ERROR: unexpected fd=%d\n",
res);
ps2sif_unlock(ps2mc_lock);
up(&ps2mc_filesem);
DPRINT(DBG_FILESEM, "UP file sem(->%d)\n",
ps2mc_filesem.count.counter);
} else {
openedfd |= (1 << res);
ps2sif_unlock(ps2mc_lock);
}
}
return (res);
}
