/***
* rt_socket_init - initialises a new socket structure
*/
int rt_socket_init(struct rtdm_dev_context *context)
{
struct rtsocket *sock = (struct rtsocket *)&context->dev_private;
unsigned int pool_size;
sock->priority = SOCK_DEF_PRIO;
sock->callback_func = NULL;
rtskb_queue_init(&sock->incoming);
rtos_nanosecs_to_time(0, &sock->timeout);
rtos_spin_lock_init(&sock->param_lock);
rtos_event_sem_init(&sock->wakeup_event);
if (test_bit(RTDM_CREATED_IN_NRT, &context->context_flags))
pool_size = rtskb_pool_init(&sock->skb_pool, socket_rtskbs);
else
pool_size = rtskb_pool_init_rt(&sock->skb_pool, socket_rtskbs);
atomic_set(&sock->pool_size, pool_size);
if (pool_size < socket_rtskbs) {
/* fix statistics */
if (pool_size == 0)
rtskb_pools--;
rt_socket_cleanup(context);
return -ENOMEM;
}
return 0;
}
/***
* rt_socket_init - initialises a new socket structure
*/
int rt_socket_init(struct rtdm_dev_context *sockctx, unsigned short protocol)
{
struct rtsocket *sock = (struct rtsocket *)&sockctx->dev_private;
unsigned int pool_size;
sock->callback_func = NULL;
rtskb_queue_init(&sock->incoming);
sock->timeout = 0;
rtdm_lock_init(&sock->param_lock);
rtdm_sem_init(&sock->pending_sem, 0);
pool_size = rt_bare_socket_init(sock, protocol,
RTSKB_PRIO_VALUE(SOCK_DEF_PRIO,
RTSKB_DEF_RT_CHANNEL),
socket_rtskbs);
sock->pool_size = pool_size;
mutex_init(&sock->pool_nrt_lock);
if (pool_size < socket_rtskbs) {
/* fix statistics */
if (pool_size == 0)
rtskb_pools--;
rt_socket_cleanup(sockctx);
return -ENOMEM;
}
return 0;
}
int __init rtcfg_init_frames(void)
{
int ret;
rtskb_queue_init(&rx_queue);
rtos_event_sem_init(&rx_event);
if (rtskb_pool_init(&rtcfg_pool, num_rtskbs) < num_rtskbs) {
ret = -ENOMEM;
goto error1;
}
ret = rtos_task_init(&rx_task, rtcfg_rx_task, 0,
RTOS_LOWEST_RT_PRIORITY);
if (ret < 0)
goto error1;
ret = rtdev_add_pack(&rtcfg_packet_type);
if (ret < 0)
goto error2;
return 0;
error2:
rtos_task_delete(&rx_task);
error1:
rtos_event_sem_delete(&rx_event);
rtskb_pool_release(&rtcfg_pool);
return ret;
}
/***
* rt_socket_init - initialises a new socket structure
*/
int __rt_socket_init(struct rtdm_fd *fd, unsigned short protocol,
struct module *module)
{
struct rtsocket *sock = rtdm_fd_to_private(fd);
unsigned int pool_size;
sock->flags = 0;
sock->callback_func = NULL;
rtskb_queue_init(&sock->incoming);
sock->timeout = 0;
rtdm_lock_init(&sock->param_lock);
rtdm_sem_init(&sock->pending_sem, 0);
pool_size = __rt_bare_socket_init(fd, protocol,
RTSKB_PRIO_VALUE(SOCK_DEF_PRIO,
RTSKB_DEF_RT_CHANNEL),
socket_rtskbs, module);
sock->pool_size = pool_size;
mutex_init(&sock->pool_nrt_lock);
if (pool_size < socket_rtskbs) {
/* fix statistics */
if (pool_size == 0)
rtskb_pools--;
rt_socket_cleanup(fd);
return -ENOMEM;
}
return 0;
}
int __init rtcfg_init_frames(void)
{
int ret;
if (rtskb_pool_init(&rtcfg_pool, num_rtskbs) < num_rtskbs)
return -ENOMEM;
rtskb_queue_init(&rx_queue);
rtdm_event_init(&rx_event, 0);
ret = rtdm_task_init(&rx_task, "rtcfg-rx", rtcfg_rx_task, 0,
RTDM_TASK_LOWEST_PRIORITY, 0);
if (ret < 0) {
rtdm_event_destroy(&rx_event);
goto error1;
}
ret = rtdev_add_pack(&rtcfg_packet_type);
if (ret < 0)
goto error2;
return 0;
error2:
rtdm_event_destroy(&rx_event);
rtdm_task_join_nrt(&rx_task, 100);
error1:
rtskb_pool_release(&rtcfg_pool);
return ret;
}
/***
* rt_socket_init - initialises a new socket structure
*/
int rt_socket_init(struct rtdm_dev_context *context)
{
struct rtsocket *sock = (struct rtsocket *)&context->dev_private;
unsigned int pool_size;
sock->priority =
RTSKB_PRIO_VALUE(SOCK_DEF_PRIO, RTSKB_DEF_RT_CHANNEL);
sock->callback_func = NULL;
rtskb_queue_init(&sock->incoming);
sock->timeout = 0;
rtos_spin_lock_init(&sock->param_lock);
rtos_sem_init(&sock->pending_sem);
if (test_bit(RTDM_CREATED_IN_NRT, &context->context_flags))
pool_size = rtskb_pool_init(&sock->skb_pool, socket_rtskbs);
else
pool_size = rtskb_pool_init_rt(&sock->skb_pool, socket_rtskbs);
atomic_set(&sock->pool_size, pool_size);
if (pool_size < socket_rtskbs) {
/* fix statistics */
if (pool_size == 0)
rtskb_pools--;
rt_socket_cleanup(context);
return -ENOMEM;
}
return 0;
}
int tdma_attach(struct rtnet_device *rtdev, void *priv)
{
struct rtmac_tdma *tdma = (struct rtmac_tdma *)priv;
rt_printk("RTmac: tdma1: init time devision multiple access (tdma) for realtime stations\n");
memset(tdma, 0, sizeof(struct rtmac_tdma));
spin_lock_init(&tdma->delta_t_lock);
tdma->rtdev = rtdev;
/*
* init semas, they implement a producer consumer between the
* sending realtime- and the driver-task
*
*/
rt_sem_init(&tdma->client_tx, 0);
/*
* init tx queue
*
*/
rtskb_prio_queue_init(&tdma->tx_queue);
/*
* init rt stuff
* - timer
* - list heads
*
*/
/* generic */
/* master */
init_timer(&tdma->rt_add_timer);
INIT_LIST_HEAD(&tdma->rt_add_list);
INIT_LIST_HEAD(&tdma->rt_list);
INIT_LIST_HEAD(&tdma->rt_list_rate);
init_timer(&tdma->task_change_timer);
init_timer(&tdma->master_wait_timer);
init_timer(&tdma->master_sent_conf_timer);
init_timer(&tdma->master_sent_test_timer);
rtskb_queue_init(&tdma->master_queue);
/* client */
init_timer(&tdma->client_sent_ack_timer);
/*
* start timer
*/
rt_set_oneshot_mode();
start_rt_timer(0);
return 0;
}
int tdma_attach(struct rtnet_device *rtdev, void *priv)
{
struct rtmac_tdma *tdma = (struct rtmac_tdma *)priv;
memset(tdma, 0, sizeof(struct rtmac_tdma));
tdma->magic = TDMA_MAGIC;
rtos_spin_lock_init(&tdma->delta_t_lock);
tdma->flags.mac_active = 1;
tdma->rtdev = rtdev;
/*
* init event
* It is set to signaled state when the SOF arrived at the client.
*/
rtos_event_init(&tdma->client_tx);
/*
* init tx queue
*
*/
rtskb_prio_queue_init(&tdma->tx_queue);
/*
* init rt stuff
* - timer
* - list heads
*
*/
/* generic */
/* master */
init_timer(&tdma->rt_add_timer);
INIT_LIST_HEAD(&tdma->rt_add_list);
INIT_LIST_HEAD(&tdma->rt_list);
INIT_LIST_HEAD(&tdma->rt_list_rate);
init_timer(&tdma->task_change_timer);
init_timer(&tdma->master_wait_timer);
init_timer(&tdma->master_sent_conf_timer);
init_timer(&tdma->master_sent_test_timer);
rtskb_queue_init(&tdma->master_queue);
/* client */
init_timer(&tdma->client_sent_ack_timer);
return tdma_dev_init(rtdev, tdma);
}
int __init nomac_proto_init(void)
{
int ret;
rtskb_queue_init(&nrt_rtskb_queue);
rtos_event_init(&wakeup_sem);
ret = rtos_task_init(&wrapper_task, nrt_xmit_task, 0,
RTOS_LOWEST_RT_PRIORITY);
if (ret < 0) {
rtos_event_delete(&wakeup_sem);
return ret;
}
return 0;
}
int __init rtcap_init(void)
{
struct rtnet_device *rtdev;
struct net_device *dev;
int ret;
int devices = 0;
int i;
unsigned long flags;
printk("RTcap: real-time capturing interface\n");
#if defined(CONFIG_RTAI_24) || defined(CONFIG_RTAI_30) || defined(CONFIG_RTAI_31)
if (start_timer) {
rt_set_oneshot_mode();
start_rt_timer(0);
}
#endif
rtskb_queue_init(&cap_queue);
ret = rtos_nrt_signal_init(&cap_signal, rtcap_signal_handler);
if (ret < 0)
goto error1;
for (i = 0; i < MAX_RT_DEVICES; i++) {
tap_device[i].present = 0;
rtdev = rtdev_get_by_index(i);
if (rtdev != NULL) {
down(&rtdev->nrt_sem);
if (test_bit(PRIV_FLAG_UP, &rtdev->priv_flags)) {
up(&rtdev->nrt_sem);
printk("RTcap: %s busy, skipping device!\n", rtdev->name);
rtdev_dereference(rtdev);
continue;
}
if (rtdev->mac_priv != NULL) {
up(&rtdev->nrt_sem);
printk("RTcap: RTmac discipline already active on device %s. "
"Load RTcap before RTmac!\n", rtdev->name);
rtdev_dereference(rtdev);
continue;
}
memset(&tap_device[i].tap_dev_stats, 0,
sizeof(struct net_device_stats));
dev = &tap_device[i].tap_dev;
memset(dev, 0, sizeof(struct net_device));
dev->init = tap_dev_init;
dev->priv = rtdev;
strncpy(dev->name, rtdev->name, IFNAMSIZ-1);
dev->name[IFNAMSIZ-1] = 0;
ret = register_netdev(dev);
if (ret < 0) {
up(&rtdev->nrt_sem);
rtdev_dereference(rtdev);
printk("RTcap: unable to register %s!\n", dev->name);
goto error2;
}
tap_device[i].present = TAP_DEV;
tap_device[i].orig_xmit = rtdev->hard_start_xmit;
if ((rtdev->flags & IFF_LOOPBACK) == 0) {
dev = &tap_device[i].rtmac_tap_dev;
memset(dev, 0, sizeof(struct net_device));
dev->init = tap_dev_init;
dev->priv = rtdev;
strncpy(dev->name, rtdev->name, IFNAMSIZ-1);
dev->name[IFNAMSIZ-1] = 0;
strncat(dev->name, "-mac", IFNAMSIZ-strlen(dev->name));
ret = register_netdev(dev);
if (ret < 0) {
up(&rtdev->nrt_sem);
rtdev_dereference(rtdev);
printk("RTcap: unable to register %s!\n", dev->name);
goto error2;
}
tap_device[i].present |= RTMAC_TAP_DEV;
rtdev->hard_start_xmit = rtcap_xmit_hook;
} else
rtdev->hard_start_xmit = rtcap_loopback_xmit_hook;
/* If the device requires no xmit_lock, start_xmit points equals
* hard_start_xmit => we have to update this as well
*/
if (rtdev->features & RTNETIF_F_NON_EXCLUSIVE_XMIT)
rtdev->start_xmit = rtdev->hard_start_xmit;
tap_device[i].present |= XMIT_HOOK;
__MOD_INC_USE_COUNT(rtdev->owner);
up(&rtdev->nrt_sem);
devices++;
}
}
if (devices == 0) {
printk("RTcap: no real-time devices found!\n");
ret = -ENODEV;
goto error2;
}
if (rtskb_pool_init(&cap_pool, rtcap_rtskbs * devices) <
rtcap_rtskbs * devices) {
rtskb_pool_release(&cap_pool);
ret = -ENOMEM;
goto error2;
}
/* register capturing handlers with RTnet core */
rtos_spin_lock_irqsave(&rtcap_lock, flags);
rtcap_handler = rtcap_rx_hook;
rtos_spin_unlock_irqrestore(&rtcap_lock, flags);
return 0;
error2:
cleanup_tap_devices();
rtos_nrt_signal_delete(&cap_signal);
error1:
#if defined(CONFIG_RTAI_24) || defined(CONFIG_RTAI_30) || defined(CONFIG_RTAI_31)
if (start_timer)
stop_rt_timer();
#endif
return ret;
}