static int __init buff_ovrflw_init(void){
char c_array[16];
module_param_array(c_array, char, &arr_argc, 0000);
MODULE_PARM_DESC(myintArray, "An array of chars");
for(int i=0; i < 17; i++){
printk(KERN_INFO "char %d: %c", i, c_array[i]);
}
return 0;
}
static long pc87413_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
int new_timeout;
union {
struct watchdog_info __user *ident;
int __user *i;
} uarg;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "PC87413(HF/F) watchdog",
};
uarg.i = (int __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(uarg.ident, &ident,
sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
return put_user(pc87413_status(), uarg.i);
case WDIOC_GETBOOTSTATUS:
return put_user(0, uarg.i);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, uarg.i))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
pc87413_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
pc87413_enable();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
pc87413_refresh();
#ifdef DEBUG
printk(KERN_INFO DPFX "keepalive\n");
#endif
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, uarg.i))
return -EFAULT;
/* the API states this is given in secs */
new_timeout /= 60;
if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
return -EINVAL;
timeout = new_timeout;
pc87413_refresh();
/* fall through and return the new timeout... */
case WDIOC_GETTIMEOUT:
new_timeout = timeout * 60;
return put_user(new_timeout, uarg.i);
default:
return -ENOTTY;
}
}
/* -- Notifier funtions -----------------------------------------*/
/**
* notify_sys:
* @this: our notifier block
* @code: the event being reported
* @unused: unused
*
* Our notifier is called on system shutdowns. We want to turn the card
* off at reboot otherwise the machine will reboot again during memory
* test or worse yet during the following fsck. This would suck, in fact
* trust me - if it happens it does suck.
*/
static int pc87413_notify_sys(struct notifier_block *this,
unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
/* Turn the card off */
pc87413_disable();
return NOTIFY_DONE;
}
/* -- Module's structures ---------------------------------------*/
static const struct file_operations pc87413_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = pc87413_write,
.unlocked_ioctl = pc87413_ioctl,
.open = pc87413_open,
.release = pc87413_release,
};
static struct notifier_block pc87413_notifier = {
.notifier_call = pc87413_notify_sys,
};
static struct miscdevice pc87413_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &pc87413_fops,
};
/* -- Module init functions -------------------------------------*/
/**
* pc87413_init: module's "constructor"
*
* Set up the WDT watchdog board. All we have to do is grab the
* resources we require and bitch if anyone beat us to them.
* The open() function will actually kick the board off.
*/
static int __init pc87413_init(void)
{
int ret;
printk(KERN_INFO PFX "Version " VERSION " at io 0x%X\n",
WDT_INDEX_IO_PORT);
/* request_region(io, 2, "pc87413"); */
ret = register_reboot_notifier(&pc87413_notifier);
if (ret != 0) {
printk(KERN_ERR PFX
"cannot register reboot notifier (err=%d)\n", ret);
}
ret = misc_register(&pc87413_miscdev);
if (ret != 0) {
printk(KERN_ERR PFX
"cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&pc87413_notifier);
return ret;
}
printk(KERN_INFO PFX "initialized. timeout=%d min \n", timeout);
pc87413_enable();
return 0;
}
/**
* pc87413_exit: module's "destructor"
*
* Unload the watchdog. You cannot do this with any file handles open.
* If your watchdog is set to continue ticking on close and you unload
* it, well it keeps ticking. We won't get the interrupt but the board
* will not touch PC memory so all is fine. You just have to load a new
* module in 60 seconds or reboot.
*/
static void __exit pc87413_exit(void)
{
/* Stop the timer before we leave */
if (!nowayout) {
pc87413_disable();
printk(KERN_INFO MODNAME "Watchdog disabled.\n");
}
misc_deregister(&pc87413_miscdev);
unregister_reboot_notifier(&pc87413_notifier);
/* release_region(io, 2); */
printk(KERN_INFO MODNAME " watchdog component driver removed.\n");
}
module_init(pc87413_init);
module_exit(pc87413_exit);
MODULE_AUTHOR("Sven Anders <*****@*****.**>, "
"Marcus Junker <*****@*****.**>,");
MODULE_DESCRIPTION("PC87413 WDT driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(io, int, 0);
MODULE_PARM_DESC(io, MODNAME " I/O port (default: " __MODULE_STRING(io) ").");
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout,
"Watchdog timeout in minutes (default="
__MODULE_STRING(timeout) ").");
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static long wb_smsc_wdt_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
int new_timeout;
union {
struct watchdog_info __user *ident;
int __user *i;
} uarg;
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "SMsC 37B787 Watchdog",
};
uarg.i = (int __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(uarg.ident, &ident, sizeof(ident))
? -EFAULT : 0;
case WDIOC_GETSTATUS:
return put_user(wb_smsc_wdt_status(), uarg.i);
case WDIOC_GETBOOTSTATUS:
return put_user(0, uarg.i);
case WDIOC_SETOPTIONS:
{
int options, retval = -EINVAL;
if (get_user(options, uarg.i))
return -EFAULT;
if (options & WDIOS_DISABLECARD) {
wb_smsc_wdt_disable();
retval = 0;
}
if (options & WDIOS_ENABLECARD) {
wb_smsc_wdt_enable();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
wb_smsc_wdt_reset_timer();
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_timeout, uarg.i))
return -EFAULT;
if (unit == UNIT_MINUTE)
new_timeout /= 60;
if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
return -EINVAL;
timeout = new_timeout;
wb_smsc_wdt_set_timeout(timeout);
case WDIOC_GETTIMEOUT:
new_timeout = timeout;
if (unit == UNIT_MINUTE)
new_timeout *= 60;
return put_user(new_timeout, uarg.i);
default:
return -ENOTTY;
}
}
static int wb_smsc_wdt_notify_sys(struct notifier_block *this,
unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
timeout = 0;
wb_smsc_wdt_disable();
}
return NOTIFY_DONE;
}
static const struct file_operations wb_smsc_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wb_smsc_wdt_write,
.unlocked_ioctl = wb_smsc_wdt_ioctl,
.open = wb_smsc_wdt_open,
.release = wb_smsc_wdt_release,
};
static struct notifier_block wb_smsc_wdt_notifier = {
.notifier_call = wb_smsc_wdt_notify_sys,
};
static struct miscdevice wb_smsc_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wb_smsc_wdt_fops,
};
static int __init wb_smsc_wdt_init(void)
{
int ret;
pr_info("SMsC 37B787 watchdog component driver "
VERSION " initialising...\n");
if (!request_region(IOPORT, IOPORT_SIZE, "SMsC 37B787 watchdog")) {
pr_err("Unable to register IO port %#x\n", IOPORT);
ret = -EBUSY;
goto out_pnp;
}
if (timeout > MAX_TIMEOUT)
timeout = MAX_TIMEOUT;
wb_smsc_wdt_initialize();
ret = register_reboot_notifier(&wb_smsc_wdt_notifier);
if (ret) {
pr_err("Unable to register reboot notifier err = %d\n", ret);
goto out_io;
}
ret = misc_register(&wb_smsc_wdt_miscdev);
if (ret) {
pr_err("Unable to register miscdev on minor %d\n",
WATCHDOG_MINOR);
goto out_rbt;
}
pr_info("Timeout set to %d %s\n",
timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
pr_info("Watchdog initialized and sleeping (nowayout=%d)...\n",
nowayout);
out_clean:
return ret;
out_rbt:
unregister_reboot_notifier(&wb_smsc_wdt_notifier);
out_io:
release_region(IOPORT, IOPORT_SIZE);
out_pnp:
goto out_clean;
}
static void __exit wb_smsc_wdt_exit(void)
{
if (!nowayout) {
wb_smsc_wdt_shutdown();
pr_info("Watchdog disabled\n");
}
misc_deregister(&wb_smsc_wdt_miscdev);
unregister_reboot_notifier(&wb_smsc_wdt_notifier);
release_region(IOPORT, IOPORT_SIZE);
pr_info("SMsC 37B787 watchdog component driver removed\n");
}
module_init(wb_smsc_wdt_init);
module_exit(wb_smsc_wdt_exit);
MODULE_AUTHOR("Sven Anders <*****@*****.**>");
MODULE_DESCRIPTION("Driver for SMsC 37B787 watchdog component (Version "
VERSION ")");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
#ifdef SMSC_SUPPORT_MINUTES
module_param(unit, int, 0);
MODULE_PARM_DESC(unit,
"set unit to use, 0=seconds or 1=minutes, default is 0");
#endif
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout, "range is 1-255 units, default is 60");
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static int create_pipe(int nr)
{
int minor_in, minor_out , ret;
if (dev_offset == -1) {
if (inminor == -1) {
minor_in = -1;
} else {
minor_in = inminor+nr;
}
if (outminor == -1) {
minor_out = -1;
} else {
minor_out = outminor+nr;
}
} else {
minor_in = 2*nr + dev_offset;
minor_out = 2*nr+1 + dev_offset;
}
/* allocate space for this pipe */
loops[nr]= kmalloc(sizeof(struct vloopback_pipe), GFP_KERNEL);
if (!loops[nr])
return -ENOMEM;
/* set up a new video device plus our private area */
loops[nr]->vloopin= video_device_alloc();
if (loops[nr]->vloopin == NULL)
return -ENOMEM;
*loops[nr]->vloopin = vloopback_template;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
video_set_drvdata(loops[nr]->vloopin,kmalloc(sizeof(struct vloopback_private),GFP_KERNEL));
#else
loops[nr]->vloopin->priv= kmalloc(sizeof(struct vloopback_private),GFP_KERNEL);
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
if ((priv_ptr)video_get_drvdata(loops[nr]->vloopin) == NULL) {
#else
if (loops[nr]->vloopin->priv == NULL) {
#endif
kfree(loops[nr]->vloopin);
return -ENOMEM;
}
/* repeat for the output device */
loops[nr]->vloopout= video_device_alloc();
if (loops[nr]->vloopout == NULL) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
kfree((priv_ptr)video_get_drvdata(loops[nr]->vloopin));
#else
kfree(loops[nr]->vloopin->priv);
#endif
kfree(loops[nr]->vloopin);
return -ENOMEM;
}
*loops[nr]->vloopout = vloopback_template;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
video_set_drvdata(loops[nr]->vloopout,kmalloc(sizeof(struct vloopback_private),GFP_KERNEL));
#else
loops[nr]->vloopout->priv= kmalloc(sizeof(struct vloopback_private),GFP_KERNEL);
#endif
if ((priv_ptr)video_get_drvdata(loops[nr]->vloopout) == NULL) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
kfree((priv_ptr)video_get_drvdata(loops[nr]->vloopin));
#else
kfree(loops[nr]->vloopin->priv);
#endif
kfree(loops[nr]->vloopin);
kfree(loops[nr]->vloopout);
return -ENOMEM;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
((priv_ptr)video_get_drvdata(loops[nr]->vloopin))->pipenr=nr;
((priv_ptr)video_get_drvdata(loops[nr]->vloopout))->pipenr=nr;
#else
((priv_ptr)loops[nr]->vloopin->priv)->pipenr=nr;
((priv_ptr)loops[nr]->vloopout->priv)->pipenr=nr;
#endif
loops[nr]->invalid_ioctl = 0; /* tibit */
loops[nr]->buffer=NULL;
loops[nr]->width=0;
loops[nr]->height=0;
loops[nr]->palette=0;
loops[nr]->frameswrite=0;
loops[nr]->framesread=0;
loops[nr]->framesdumped=0;
loops[nr]->wopen=0;
loops[nr]->ropen=0;
loops[nr]->frame=0;
loops[nr]->pendingread=0;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
((priv_ptr)video_get_drvdata(loops[nr]->vloopin))->in=1;
((priv_ptr)video_get_drvdata(loops[nr]->vloopout))->in=0;
#else
((priv_ptr)loops[nr]->vloopin->priv)->in=1;
((priv_ptr)loops[nr]->vloopout->priv)->in=0;
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
loops[nr]->vloopin->type=0;
#endif
sprintf(loops[nr]->vloopin->name, "Video loopback %d input", nr);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
loops[nr]->vloopout->type=VID_TYPE_CAPTURE;
#endif
sprintf(loops[nr]->vloopout->name, "Video loopback %d output", nr);
init_waitqueue_head(&loops[nr]->wait);
init_MUTEX(&loops[nr]->lock);
ret = video_register_device(loops[nr]->vloopout, VFL_TYPE_GRABBER, minor_out);
if ((ret ==-1) || (ret == -23)) {
info("error registering device %s", loops[nr]->vloopout->name);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
kfree(((priv_ptr)video_get_drvdata(loops[nr]->vloopin)));
video_unregister_device(loops[nr]->vloopin);
kfree(((priv_ptr)video_get_drvdata(loops[nr]->vloopout)));
#else
kfree(loops[nr]->vloopin->priv);
video_unregister_device(loops[nr]->vloopin);
kfree(loops[nr]->vloopout->priv);
#endif
kfree(loops[nr]->vloopout);
kfree(loops[nr]);
loops[nr]=NULL;
return ret;
}
ret = video_register_device(loops[nr]->vloopin, VFL_TYPE_GRABBER, minor_in);
if ((ret == -1 ) || ( ret == -23 )) {
info("error registering device %s",loops[nr]->vloopin->name);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
kfree(((priv_ptr)video_get_drvdata(loops[nr]->vloopin)));
kfree(((priv_ptr)video_get_drvdata(loops[nr]->vloopout)));
#else
kfree(loops[nr]->vloopin->priv);
kfree(loops[nr]->vloopout->priv);
#endif
kfree(loops[nr]->vloopin);
kfree(loops[nr]->vloopout);
kfree(loops[nr]);
loops[nr]=NULL;
return ret;
}
loops[nr]->ioctldata=kmalloc(1024, GFP_KERNEL);
loops[nr]->ioctlretdata=kmalloc(1024, GFP_KERNEL);
return 0;
}
/****************************************************************************
* init stuff
****************************************************************************/
MODULE_AUTHOR("J.B. Vreeken ([email protected])");
MODULE_DESCRIPTION("Video4linux loopback device.");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(pipes, int, 000);
#else
MODULE_PARM(pipes, "i");
#endif
MODULE_PARM_DESC(pipes, "Nr of pipes to create (each pipe uses two video devices)");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(spares, int, 000);
#else
MODULE_PARM(spares, "i");
#endif
MODULE_PARM_DESC(spares, "Nr of spare pipes that should be created");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(dev_offset, int, 000);
#else
MODULE_PARM(dev_offset_param, "i");
#endif
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(inminor, int, 000);
#else
MODULE_PARM(inminor, "i");
#endif
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(outminor, int, 000);
#else
MODULE_PARM(outminor, "i");
#endif
MODULE_PARM_DESC(dev_offset, "Prefered offset for video device numbers");
MODULE_LICENSE("GPL");
MODULE_VERSION( VLOOPBACK_VERSION );
static int __init vloopback_init(void)
{
int i,ret;
info("Video4linux loopback driver v"VLOOPBACK_VERSION);
if (pipes==-1) pipes=1;
if (pipes > MAX_PIPES) {
pipes=MAX_PIPES;
info("Nr of pipes is limited to: %d", MAX_PIPES);
}
for (i=0; i<pipes; i++) {
ret = create_pipe(i);
if (ret == 0) {
info("Loopback %d registered, input: video%d, output: video%d",
i, loops[i]->vloopin->minor,
loops[i]->vloopout->minor);
nr_o_pipes=i+1;
}else{
return ret;
}
}
return 0;
}
static long asr_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.identity = "IBM ASR",
};
void __user *argp = (void __user *)arg;
int __user *p = argp;
int heartbeat;
switch (cmd) {
case WDIOC_GETSUPPORT:
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
case WDIOC_SETOPTIONS:
{
int new_options, retval = -EINVAL;
if (get_user(new_options, p))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
asr_disable();
retval = 0;
}
if (new_options & WDIOS_ENABLECARD) {
asr_enable();
asr_toggle();
retval = 0;
}
return retval;
}
case WDIOC_KEEPALIVE:
asr_toggle();
return 0;
/*
* The hardware has a fixed timeout value, so no WDIOC_SETTIMEOUT
* and WDIOC_GETTIMEOUT always returns 256.
*/
case WDIOC_GETTIMEOUT:
heartbeat = 256;
return put_user(heartbeat, p);
default:
return -ENOTTY;
}
}
static int asr_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &asr_is_open))
return -EBUSY;
asr_toggle();
asr_enable();
return nonseekable_open(inode, file);
}
static int asr_release(struct inode *inode, struct file *file)
{
if (asr_expect_close == 42)
asr_disable();
else {
pr_crit("unexpected close, not stopping watchdog!\n");
asr_toggle();
}
clear_bit(0, &asr_is_open);
asr_expect_close = 0;
return 0;
}
static const struct file_operations asr_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = asr_write,
.unlocked_ioctl = asr_ioctl,
.open = asr_open,
.release = asr_release,
};
static struct miscdevice asr_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &asr_fops,
};
struct ibmasr_id {
const char *desc;
int type;
};
static struct ibmasr_id __initdata ibmasr_id_table[] = {
{ "IBM Automatic Server Restart - eserver xSeries 220", ASMTYPE_TOPAZ },
{ "IBM Automatic Server Restart - Machine Type 8673", ASMTYPE_PEARL },
{ "IBM Automatic Server Restart - Machine Type 8480", ASMTYPE_JASPER },
{ "IBM Automatic Server Restart - Machine Type 8482", ASMTYPE_JUNIPER },
{ "IBM Automatic Server Restart - Machine Type 8648", ASMTYPE_SPRUCE },
{ NULL }
};
static int __init ibmasr_init(void)
{
struct ibmasr_id *id;
int rc;
for (id = ibmasr_id_table; id->desc; id++) {
if (dmi_find_device(DMI_DEV_TYPE_OTHER, id->desc, NULL)) {
asr_type = id->type;
break;
}
}
if (!asr_type)
return -ENODEV;
rc = asr_get_base_address();
if (rc)
return rc;
rc = misc_register(&asr_miscdev);
if (rc < 0) {
release_region(asr_base, asr_length);
pr_err("failed to register misc device\n");
return rc;
}
return 0;
}
static void __exit ibmasr_exit(void)
{
if (!nowayout)
asr_disable();
misc_deregister(&asr_miscdev);
release_region(asr_base, asr_length);
}
module_init(ibmasr_init);
module_exit(ibmasr_exit);
module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
MODULE_DESCRIPTION("IBM Automatic Server Restart driver");
MODULE_AUTHOR("Andrey Panin");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
static int create_pipe(int nr)
{
int minor_in, minor_out , ret;
if (debug > LOG_NODEBUG)
info("Video loopback %d", nr);
if (dev_offset == -1) {
minor_in = minor_out = -1; /* autoassign */
} else {
minor_in = 2 * nr + dev_offset;
minor_out = 2 * nr + 1 + dev_offset;
}
/* allocate space for this pipe */
loops[nr]= kmalloc(sizeof(struct vloopback_pipe), GFP_KERNEL);
if (!loops[nr])
return -ENOMEM;
/* set up a new video device plus our private area */
loops[nr]->vloopin = video_device_alloc();
if (loops[nr]->vloopin == NULL)
return -ENOMEM;
*loops[nr]->vloopin = vloopback_template;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
priv_ptr ptr_in = kmalloc(sizeof(struct vloopback_private),
GFP_KERNEL);
if (ptr_in == NULL) {
kfree(ptr_in);
#else
loops[nr]->vloopin->vd_private_data = kmalloc(sizeof(struct vloopback_private),
GFP_KERNEL);
if (loops[nr]->vloopin->vd_private_data == NULL) {
kfree(loops[nr]->vloopin);
#endif
return -ENOMEM;
}
/* repeat for the output device */
loops[nr]->vloopout = video_device_alloc();
if (loops[nr]->vloopout == NULL) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
kfree(ptr_in);
#else
kfree(loops[nr]->vloopin->vd_private_data);
#endif
kfree(loops[nr]->vloopin);
return -ENOMEM;
}
*loops[nr]->vloopout = vloopback_template;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
priv_ptr ptr_out = kmalloc(sizeof(struct vloopback_private),
GFP_KERNEL);
if (ptr_out == NULL) {
kfree(ptr_in);
kfree(ptr_out);
#else
loops[nr]->vloopout->vd_private_data = kmalloc(sizeof(struct vloopback_private),
GFP_KERNEL);
if (loops[nr]->vloopout->vd_private_data == NULL) {
kfree(loops[nr]->vloopin->vd_private_data);
#endif
kfree(loops[nr]->vloopin);
kfree(loops[nr]->vloopout);
return -ENOMEM;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
ptr_in->pipenr = nr;
ptr_out->pipenr = nr;
#else
((priv_ptr)loops[nr]->vloopin->vd_private_data)->pipenr = nr;
((priv_ptr)loops[nr]->vloopout->vd_private_data)->pipenr = nr;
#endif
loops[nr]->invalid_ioctl = 0; /* tibit */
loops[nr]->buffer = NULL;
loops[nr]->width = 0;
loops[nr]->height = 0;
loops[nr]->palette = 0;
loops[nr]->frameswrite = 0;
loops[nr]->framesread = 0;
loops[nr]->framesdumped = 0;
loops[nr]->wopen = 0;
loops[nr]->ropen = 0;
loops[nr]->frame = 0;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
ptr_in->in = 1;
ptr_out->in = 0;
dev_set_drvdata(&loops[nr]->vloopin->dev, ptr_in);
dev_set_drvdata(&loops[nr]->vloopout->dev, ptr_out);
#else
((priv_ptr)loops[nr]->vloopin->vd_private_data)->in = 1;
((priv_ptr)loops[nr]->vloopout->vd_private_data)->in = 0;
#endif
sprintf(loops[nr]->vloopin->name, "Video loopback %d input", nr);
sprintf(loops[nr]->vloopout->name, "Video loopback %d output", nr);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
loops[nr]->vloopin->type = 0;
loops[nr]->vloopout->type = VID_TYPE_CAPTURE;
#endif
loops[nr]->vloopout->minor = minor_out;
loops[nr]->vloopin->minor = minor_in;
init_waitqueue_head(&loops[nr]->wait);
init_MUTEX(&loops[nr]->lock);
ret = video_register_device(loops[nr]->vloopin, VFL_TYPE_GRABBER, minor_in);
if ((ret == -1 ) || ( ret == -23 )) {
info("error registering device %s", loops[nr]->vloopin->name);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
kfree(ptr_in);
dev_set_drvdata(&loops[nr]->vloopin->dev, NULL);
#else
kfree(loops[nr]->vloopin->vd_private_data);
#endif
kfree(loops[nr]->vloopin);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
kfree(ptr_out);
dev_set_drvdata(&loops[nr]->vloopout->dev, NULL);
#else
kfree(loops[nr]->vloopout->vd_private_data);
#endif
kfree(loops[nr]->vloopout);
kfree(loops[nr]);
loops[nr] = NULL;
return ret;
}
ret = video_register_device(loops[nr]->vloopout, VFL_TYPE_GRABBER, minor_out);
if ((ret ==-1) || (ret == -23)) {
info("error registering device %s", loops[nr]->vloopout->name);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
kfree(ptr_in);
dev_set_drvdata(&loops[nr]->vloopin->dev, NULL);
#else
kfree(loops[nr]->vloopin->vd_private_data);
#endif
video_unregister_device(loops[nr]->vloopin);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)
kfree(ptr_out);
dev_set_drvdata(&loops[nr]->vloopout->dev, NULL);
#else
kfree(loops[nr]->vloopout->vd_private_data);
#endif
kfree(loops[nr]->vloopout);
kfree(loops[nr]);
loops[nr] = NULL;
return ret;
}
loops[nr]->ioctldata = kmalloc(1024, GFP_KERNEL);
loops[nr]->ioctlretdata = kmalloc(1024, GFP_KERNEL);
return 0;
}
/****************************************************************************
* init stuff
****************************************************************************/
MODULE_AUTHOR("J.B. Vreeken ([email protected])");
MODULE_DESCRIPTION("Video4linux loopback device.");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(pipes, int, 000);
#else
MODULE_PARM(pipes, "i");
#endif
MODULE_PARM_DESC(pipes, " Nr of pipes to create (each pipe uses two video devices)");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(spares, int, 000);
#else
MODULE_PARM(spares, "i");
#endif
MODULE_PARM_DESC(spares, " Nr of spare pipes that should be created");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(num_buffers, int, 000);
#else
MODULE_PARM(num_buffers, "i");
#endif
MODULE_PARM_DESC(num_buffers, " Prefered numbers of internal buffers to map (default 2)");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(dev_offset, int, 000);
#else
MODULE_PARM(dev_offset_param, "i");
#endif
MODULE_PARM_DESC(dev_offset, " Prefered offset for video device numbers");
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
module_param(debug, int, 000);
#else
MODULE_PARM(debug_param, "i");
#endif
MODULE_PARM_DESC(debug, " Enable module debug level 0-3 (by default 0)");
MODULE_LICENSE("GPL");
MODULE_VERSION( VLOOPBACK_VERSION );
static int __init vloopback_init(void)
{
int i, ret;
info("video4linux loopback driver v"VLOOPBACK_VERSION);
if (pipes == -1)
pipes = 1;
if (pipes > MAX_PIPES) {
pipes = MAX_PIPES;
info("Nr of pipes is limited to: %d", MAX_PIPES);
}
if (num_buffers < N_BUFFS) {
num_buffers = N_BUFFS;
info("Nr of buffer set to default value %d", N_BUFFS);
}
for (i = 0; i < pipes; i++) {
ret = create_pipe(i);
if (ret == 0) {
info("Loopback %d registered, input: video%d,"
" output: video%d",
i, loops[i]->vloopin->minor,
loops[i]->vloopout->minor);
info("Loopback %d , Using %d buffers", i, num_buffers);
nr_o_pipes = i + 1;
} else {
return ret;
}
}
return 0;
}
