diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/isdn/capi/capi.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/isdn/capi/capi.c | 1470 |
1 files changed, 0 insertions, 1470 deletions
diff --git a/ANDROID_3.4.5/drivers/isdn/capi/capi.c b/ANDROID_3.4.5/drivers/isdn/capi/capi.c deleted file mode 100644 index b902794b..00000000 --- a/ANDROID_3.4.5/drivers/isdn/capi/capi.c +++ /dev/null @@ -1,1470 +0,0 @@ -/* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $ - * - * CAPI 2.0 Interface for Linux - * - * Copyright 1996 by Carsten Paeth <calle@calle.de> - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by reference. - * - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/major.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/fcntl.h> -#include <linux/fs.h> -#include <linux/signal.h> -#include <linux/mutex.h> -#include <linux/mm.h> -#include <linux/timer.h> -#include <linux/wait.h> -#include <linux/tty.h> -#include <linux/netdevice.h> -#include <linux/ppp_defs.h> -#include <linux/ppp-ioctl.h> -#include <linux/skbuff.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/poll.h> -#include <linux/capi.h> -#include <linux/kernelcapi.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/moduleparam.h> -#include <linux/isdn/capiutil.h> -#include <linux/isdn/capicmd.h> - -MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface"); -MODULE_AUTHOR("Carsten Paeth"); -MODULE_LICENSE("GPL"); - -/* -------- driver information -------------------------------------- */ - -static DEFINE_MUTEX(capi_mutex); -static struct class *capi_class; -static int capi_major = 68; /* allocated */ - -module_param_named(major, capi_major, uint, 0); - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE -#define CAPINC_NR_PORTS 32 -#define CAPINC_MAX_PORTS 256 - -static int capi_ttyminors = CAPINC_NR_PORTS; - -module_param_named(ttyminors, capi_ttyminors, uint, 0); -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - -/* -------- defines ------------------------------------------------- */ - -#define CAPINC_MAX_RECVQUEUE 10 -#define CAPINC_MAX_SENDQUEUE 10 -#define CAPI_MAX_BLKSIZE 2048 - -/* -------- data structures ----------------------------------------- */ - -struct capidev; -struct capincci; -struct capiminor; - -struct ackqueue_entry { - struct list_head list; - u16 datahandle; -}; - -struct capiminor { - struct kref kref; - - unsigned int minor; - - struct capi20_appl *ap; - u32 ncci; - atomic_t datahandle; - atomic_t msgid; - - struct tty_port port; - int ttyinstop; - int ttyoutstop; - - struct sk_buff_head inqueue; - - struct sk_buff_head outqueue; - int outbytes; - struct sk_buff *outskb; - spinlock_t outlock; - - /* transmit path */ - struct list_head ackqueue; - int nack; - spinlock_t ackqlock; -}; - -struct capincci { - struct list_head list; - u32 ncci; - struct capidev *cdev; -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - struct capiminor *minorp; -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ -}; - -struct capidev { - struct list_head list; - struct capi20_appl ap; - u16 errcode; - unsigned userflags; - - struct sk_buff_head recvqueue; - wait_queue_head_t recvwait; - - struct list_head nccis; - - struct mutex lock; -}; - -/* -------- global variables ---------------------------------------- */ - -static DEFINE_MUTEX(capidev_list_lock); -static LIST_HEAD(capidev_list); - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - -static DEFINE_SPINLOCK(capiminors_lock); -static struct capiminor **capiminors; - -static struct tty_driver *capinc_tty_driver; - -/* -------- datahandles --------------------------------------------- */ - -static int capiminor_add_ack(struct capiminor *mp, u16 datahandle) -{ - struct ackqueue_entry *n; - - n = kmalloc(sizeof(*n), GFP_ATOMIC); - if (unlikely(!n)) { - printk(KERN_ERR "capi: alloc datahandle failed\n"); - return -1; - } - n->datahandle = datahandle; - INIT_LIST_HEAD(&n->list); - spin_lock_bh(&mp->ackqlock); - list_add_tail(&n->list, &mp->ackqueue); - mp->nack++; - spin_unlock_bh(&mp->ackqlock); - return 0; -} - -static int capiminor_del_ack(struct capiminor *mp, u16 datahandle) -{ - struct ackqueue_entry *p, *tmp; - - spin_lock_bh(&mp->ackqlock); - list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { - if (p->datahandle == datahandle) { - list_del(&p->list); - mp->nack--; - spin_unlock_bh(&mp->ackqlock); - kfree(p); - return 0; - } - } - spin_unlock_bh(&mp->ackqlock); - return -1; -} - -static void capiminor_del_all_ack(struct capiminor *mp) -{ - struct ackqueue_entry *p, *tmp; - - list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) { - list_del(&p->list); - kfree(p); - mp->nack--; - } -} - - -/* -------- struct capiminor ---------------------------------------- */ - -static const struct tty_port_operations capiminor_port_ops; /* we have none */ - -static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci) -{ - struct capiminor *mp; - struct device *dev; - unsigned int minor; - - mp = kzalloc(sizeof(*mp), GFP_KERNEL); - if (!mp) { - printk(KERN_ERR "capi: can't alloc capiminor\n"); - return NULL; - } - - kref_init(&mp->kref); - - mp->ap = ap; - mp->ncci = ncci; - INIT_LIST_HEAD(&mp->ackqueue); - spin_lock_init(&mp->ackqlock); - - skb_queue_head_init(&mp->inqueue); - skb_queue_head_init(&mp->outqueue); - spin_lock_init(&mp->outlock); - - tty_port_init(&mp->port); - mp->port.ops = &capiminor_port_ops; - - /* Allocate the least unused minor number. */ - spin_lock(&capiminors_lock); - for (minor = 0; minor < capi_ttyminors; minor++) - if (!capiminors[minor]) { - capiminors[minor] = mp; - break; - } - spin_unlock(&capiminors_lock); - - if (minor == capi_ttyminors) { - printk(KERN_NOTICE "capi: out of minors\n"); - goto err_out1; - } - - mp->minor = minor; - - dev = tty_register_device(capinc_tty_driver, minor, NULL); - if (IS_ERR(dev)) - goto err_out2; - - return mp; - -err_out2: - spin_lock(&capiminors_lock); - capiminors[minor] = NULL; - spin_unlock(&capiminors_lock); - -err_out1: - kfree(mp); - return NULL; -} - -static void capiminor_destroy(struct kref *kref) -{ - struct capiminor *mp = container_of(kref, struct capiminor, kref); - - kfree_skb(mp->outskb); - skb_queue_purge(&mp->inqueue); - skb_queue_purge(&mp->outqueue); - capiminor_del_all_ack(mp); - kfree(mp); -} - -static struct capiminor *capiminor_get(unsigned int minor) -{ - struct capiminor *mp; - - spin_lock(&capiminors_lock); - mp = capiminors[minor]; - if (mp) - kref_get(&mp->kref); - spin_unlock(&capiminors_lock); - - return mp; -} - -static inline void capiminor_put(struct capiminor *mp) -{ - kref_put(&mp->kref, capiminor_destroy); -} - -static void capiminor_free(struct capiminor *mp) -{ - tty_unregister_device(capinc_tty_driver, mp->minor); - - spin_lock(&capiminors_lock); - capiminors[mp->minor] = NULL; - spin_unlock(&capiminors_lock); - - capiminor_put(mp); -} - -/* -------- struct capincci ----------------------------------------- */ - -static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np) -{ - if (cdev->userflags & CAPIFLAG_HIGHJACKING) - np->minorp = capiminor_alloc(&cdev->ap, np->ncci); -} - -static void capincci_free_minor(struct capincci *np) -{ - struct capiminor *mp = np->minorp; - struct tty_struct *tty; - - if (mp) { - tty = tty_port_tty_get(&mp->port); - if (tty) { - tty_vhangup(tty); - tty_kref_put(tty); - } - - capiminor_free(mp); - } -} - -static inline unsigned int capincci_minor_opencount(struct capincci *np) -{ - struct capiminor *mp = np->minorp; - unsigned int count = 0; - struct tty_struct *tty; - - if (mp) { - tty = tty_port_tty_get(&mp->port); - if (tty) { - count = tty->count; - tty_kref_put(tty); - } - } - return count; -} - -#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ - -static inline void -capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { } -static inline void capincci_free_minor(struct capincci *np) { } - -static inline unsigned int capincci_minor_opencount(struct capincci *np) -{ - return 0; -} - -#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ - -static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci) -{ - struct capincci *np; - - np = kzalloc(sizeof(*np), GFP_KERNEL); - if (!np) - return NULL; - np->ncci = ncci; - np->cdev = cdev; - - capincci_alloc_minor(cdev, np); - - list_add_tail(&np->list, &cdev->nccis); - - return np; -} - -static void capincci_free(struct capidev *cdev, u32 ncci) -{ - struct capincci *np, *tmp; - - list_for_each_entry_safe(np, tmp, &cdev->nccis, list) - if (ncci == 0xffffffff || np->ncci == ncci) { - capincci_free_minor(np); - list_del(&np->list); - kfree(np); - } -} - -static struct capincci *capincci_find(struct capidev *cdev, u32 ncci) -{ - struct capincci *np; - - list_for_each_entry(np, &cdev->nccis, list) - if (np->ncci == ncci) - return np; - return NULL; -} - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE -/* -------- handle data queue --------------------------------------- */ - -static struct sk_buff * -gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb) -{ - struct sk_buff *nskb; - nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_KERNEL); - if (nskb) { - u16 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); - unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN); - capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN); - capimsg_setu16(s, 2, mp->ap->applid); - capimsg_setu8 (s, 4, CAPI_DATA_B3); - capimsg_setu8 (s, 5, CAPI_RESP); - capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid)); - capimsg_setu32(s, 8, mp->ncci); - capimsg_setu16(s, 12, datahandle); - } - return nskb; -} - -static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb) -{ - unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data); - struct tty_struct *tty; - struct sk_buff *nskb; - u16 errcode, datahandle; - struct tty_ldisc *ld; - int ret = -1; - - tty = tty_port_tty_get(&mp->port); - if (!tty) { - pr_debug("capi: currently no receiver\n"); - return -1; - } - - ld = tty_ldisc_ref(tty); - if (!ld) { - /* fatal error, do not requeue */ - ret = 0; - kfree_skb(skb); - goto deref_tty; - } - - if (ld->ops->receive_buf == NULL) { - pr_debug("capi: ldisc has no receive_buf function\n"); - /* fatal error, do not requeue */ - goto free_skb; - } - if (mp->ttyinstop) { - pr_debug("capi: recv tty throttled\n"); - goto deref_ldisc; - } - - if (tty->receive_room < datalen) { - pr_debug("capi: no room in tty\n"); - goto deref_ldisc; - } - - nskb = gen_data_b3_resp_for(mp, skb); - if (!nskb) { - printk(KERN_ERR "capi: gen_data_b3_resp failed\n"); - goto deref_ldisc; - } - - datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); - - errcode = capi20_put_message(mp->ap, nskb); - - if (errcode == CAPI_NOERROR) { - skb_pull(skb, CAPIMSG_LEN(skb->data)); - pr_debug("capi: DATA_B3_RESP %u len=%d => ldisc\n", - datahandle, skb->len); - ld->ops->receive_buf(tty, skb->data, NULL, skb->len); - } else { - printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n", - errcode); - kfree_skb(nskb); - - if (errcode == CAPI_SENDQUEUEFULL) - goto deref_ldisc; - } - -free_skb: - ret = 0; - kfree_skb(skb); - -deref_ldisc: - tty_ldisc_deref(ld); - -deref_tty: - tty_kref_put(tty); - return ret; -} - -static void handle_minor_recv(struct capiminor *mp) -{ - struct sk_buff *skb; - - while ((skb = skb_dequeue(&mp->inqueue)) != NULL) - if (handle_recv_skb(mp, skb) < 0) { - skb_queue_head(&mp->inqueue, skb); - return; - } -} - -static void handle_minor_send(struct capiminor *mp) -{ - struct tty_struct *tty; - struct sk_buff *skb; - u16 len; - u16 errcode; - u16 datahandle; - - tty = tty_port_tty_get(&mp->port); - if (!tty) - return; - - if (mp->ttyoutstop) { - pr_debug("capi: send: tty stopped\n"); - tty_kref_put(tty); - return; - } - - while (1) { - spin_lock_bh(&mp->outlock); - skb = __skb_dequeue(&mp->outqueue); - if (!skb) { - spin_unlock_bh(&mp->outlock); - break; - } - len = (u16)skb->len; - mp->outbytes -= len; - spin_unlock_bh(&mp->outlock); - - datahandle = atomic_inc_return(&mp->datahandle); - skb_push(skb, CAPI_DATA_B3_REQ_LEN); - memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN); - capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN); - capimsg_setu16(skb->data, 2, mp->ap->applid); - capimsg_setu8 (skb->data, 4, CAPI_DATA_B3); - capimsg_setu8 (skb->data, 5, CAPI_REQ); - capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid)); - capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */ - capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */ - capimsg_setu16(skb->data, 16, len); /* Data length */ - capimsg_setu16(skb->data, 18, datahandle); - capimsg_setu16(skb->data, 20, 0); /* Flags */ - - if (capiminor_add_ack(mp, datahandle) < 0) { - skb_pull(skb, CAPI_DATA_B3_REQ_LEN); - - spin_lock_bh(&mp->outlock); - __skb_queue_head(&mp->outqueue, skb); - mp->outbytes += len; - spin_unlock_bh(&mp->outlock); - - break; - } - errcode = capi20_put_message(mp->ap, skb); - if (errcode == CAPI_NOERROR) { - pr_debug("capi: DATA_B3_REQ %u len=%u\n", - datahandle, len); - continue; - } - capiminor_del_ack(mp, datahandle); - - if (errcode == CAPI_SENDQUEUEFULL) { - skb_pull(skb, CAPI_DATA_B3_REQ_LEN); - - spin_lock_bh(&mp->outlock); - __skb_queue_head(&mp->outqueue, skb); - mp->outbytes += len; - spin_unlock_bh(&mp->outlock); - - break; - } - - /* ups, drop packet */ - printk(KERN_ERR "capi: put_message = %x\n", errcode); - kfree_skb(skb); - } - tty_kref_put(tty); -} - -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ -/* -------- function called by lower level -------------------------- */ - -static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) -{ - struct capidev *cdev = ap->private; -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - struct tty_struct *tty; - struct capiminor *mp; - u16 datahandle; -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - struct capincci *np; - - mutex_lock(&cdev->lock); - - if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) { - u16 info = CAPIMSG_U16(skb->data, 12); // Info field - if ((info & 0xff00) == 0) - capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); - } - if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) - capincci_alloc(cdev, CAPIMSG_NCCI(skb->data)); - - if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) { - skb_queue_tail(&cdev->recvqueue, skb); - wake_up_interruptible(&cdev->recvwait); - goto unlock_out; - } - - np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data)); - if (!np) { - printk(KERN_ERR "BUG: capi_signal: ncci not found\n"); - skb_queue_tail(&cdev->recvqueue, skb); - wake_up_interruptible(&cdev->recvwait); - goto unlock_out; - } - -#ifndef CONFIG_ISDN_CAPI_MIDDLEWARE - skb_queue_tail(&cdev->recvqueue, skb); - wake_up_interruptible(&cdev->recvwait); - -#else /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - - mp = np->minorp; - if (!mp) { - skb_queue_tail(&cdev->recvqueue, skb); - wake_up_interruptible(&cdev->recvwait); - goto unlock_out; - } - if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) { - datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2); - pr_debug("capi_signal: DATA_B3_IND %u len=%d\n", - datahandle, skb->len-CAPIMSG_LEN(skb->data)); - skb_queue_tail(&mp->inqueue, skb); - - handle_minor_recv(mp); - - } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) { - - datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4); - pr_debug("capi_signal: DATA_B3_CONF %u 0x%x\n", - datahandle, - CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 2)); - kfree_skb(skb); - capiminor_del_ack(mp, datahandle); - tty = tty_port_tty_get(&mp->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } - handle_minor_send(mp); - - } else { - /* ups, let capi application handle it :-) */ - skb_queue_tail(&cdev->recvqueue, skb); - wake_up_interruptible(&cdev->recvwait); - } -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - -unlock_out: - mutex_unlock(&cdev->lock); -} - -/* -------- file_operations for capidev ----------------------------- */ - -static ssize_t -capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) -{ - struct capidev *cdev = file->private_data; - struct sk_buff *skb; - size_t copied; - int err; - - if (!cdev->ap.applid) - return -ENODEV; - - skb = skb_dequeue(&cdev->recvqueue); - if (!skb) { - if (file->f_flags & O_NONBLOCK) - return -EAGAIN; - err = wait_event_interruptible(cdev->recvwait, - (skb = skb_dequeue(&cdev->recvqueue))); - if (err) - return err; - } - if (skb->len > count) { - skb_queue_head(&cdev->recvqueue, skb); - return -EMSGSIZE; - } - if (copy_to_user(buf, skb->data, skb->len)) { - skb_queue_head(&cdev->recvqueue, skb); - return -EFAULT; - } - copied = skb->len; - - kfree_skb(skb); - - return copied; -} - -static ssize_t -capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) -{ - struct capidev *cdev = file->private_data; - struct sk_buff *skb; - u16 mlen; - - if (!cdev->ap.applid) - return -ENODEV; - - skb = alloc_skb(count, GFP_USER); - if (!skb) - return -ENOMEM; - - if (copy_from_user(skb_put(skb, count), buf, count)) { - kfree_skb(skb); - return -EFAULT; - } - mlen = CAPIMSG_LEN(skb->data); - if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) { - if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) { - kfree_skb(skb); - return -EINVAL; - } - } else { - if (mlen != count) { - kfree_skb(skb); - return -EINVAL; - } - } - CAPIMSG_SETAPPID(skb->data, cdev->ap.applid); - - if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) { - mutex_lock(&cdev->lock); - capincci_free(cdev, CAPIMSG_NCCI(skb->data)); - mutex_unlock(&cdev->lock); - } - - cdev->errcode = capi20_put_message(&cdev->ap, skb); - - if (cdev->errcode) { - kfree_skb(skb); - return -EIO; - } - return count; -} - -static unsigned int -capi_poll(struct file *file, poll_table *wait) -{ - struct capidev *cdev = file->private_data; - unsigned int mask = 0; - - if (!cdev->ap.applid) - return POLLERR; - - poll_wait(file, &(cdev->recvwait), wait); - mask = POLLOUT | POLLWRNORM; - if (!skb_queue_empty(&cdev->recvqueue)) - mask |= POLLIN | POLLRDNORM; - return mask; -} - -static int -capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - struct capidev *cdev = file->private_data; - capi_ioctl_struct data; - int retval = -EINVAL; - void __user *argp = (void __user *)arg; - - switch (cmd) { - case CAPI_REGISTER: - mutex_lock(&cdev->lock); - - if (cdev->ap.applid) { - retval = -EEXIST; - goto register_out; - } - if (copy_from_user(&cdev->ap.rparam, argp, - sizeof(struct capi_register_params))) { - retval = -EFAULT; - goto register_out; - } - cdev->ap.private = cdev; - cdev->ap.recv_message = capi_recv_message; - cdev->errcode = capi20_register(&cdev->ap); - retval = (int)cdev->ap.applid; - if (cdev->errcode) { - cdev->ap.applid = 0; - retval = -EIO; - } - -register_out: - mutex_unlock(&cdev->lock); - return retval; - - case CAPI_GET_VERSION: - { - if (copy_from_user(&data.contr, argp, - sizeof(data.contr))) - return -EFAULT; - cdev->errcode = capi20_get_version(data.contr, &data.version); - if (cdev->errcode) - return -EIO; - if (copy_to_user(argp, &data.version, - sizeof(data.version))) - return -EFAULT; - } - return 0; - - case CAPI_GET_SERIAL: - { - if (copy_from_user(&data.contr, argp, - sizeof(data.contr))) - return -EFAULT; - cdev->errcode = capi20_get_serial(data.contr, data.serial); - if (cdev->errcode) - return -EIO; - if (copy_to_user(argp, data.serial, - sizeof(data.serial))) - return -EFAULT; - } - return 0; - case CAPI_GET_PROFILE: - { - if (copy_from_user(&data.contr, argp, - sizeof(data.contr))) - return -EFAULT; - - if (data.contr == 0) { - cdev->errcode = capi20_get_profile(data.contr, &data.profile); - if (cdev->errcode) - return -EIO; - - retval = copy_to_user(argp, - &data.profile.ncontroller, - sizeof(data.profile.ncontroller)); - - } else { - cdev->errcode = capi20_get_profile(data.contr, &data.profile); - if (cdev->errcode) - return -EIO; - - retval = copy_to_user(argp, &data.profile, - sizeof(data.profile)); - } - if (retval) - return -EFAULT; - } - return 0; - - case CAPI_GET_MANUFACTURER: - { - if (copy_from_user(&data.contr, argp, - sizeof(data.contr))) - return -EFAULT; - cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer); - if (cdev->errcode) - return -EIO; - - if (copy_to_user(argp, data.manufacturer, - sizeof(data.manufacturer))) - return -EFAULT; - - } - return 0; - case CAPI_GET_ERRCODE: - data.errcode = cdev->errcode; - cdev->errcode = CAPI_NOERROR; - if (arg) { - if (copy_to_user(argp, &data.errcode, - sizeof(data.errcode))) - return -EFAULT; - } - return data.errcode; - - case CAPI_INSTALLED: - if (capi20_isinstalled() == CAPI_NOERROR) - return 0; - return -ENXIO; - - case CAPI_MANUFACTURER_CMD: - { - struct capi_manufacturer_cmd mcmd; - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - if (copy_from_user(&mcmd, argp, sizeof(mcmd))) - return -EFAULT; - return capi20_manufacturer(mcmd.cmd, mcmd.data); - } - return 0; - - case CAPI_SET_FLAGS: - case CAPI_CLR_FLAGS: { - unsigned userflags; - - if (copy_from_user(&userflags, argp, sizeof(userflags))) - return -EFAULT; - - mutex_lock(&cdev->lock); - if (cmd == CAPI_SET_FLAGS) - cdev->userflags |= userflags; - else - cdev->userflags &= ~userflags; - mutex_unlock(&cdev->lock); - return 0; - } - case CAPI_GET_FLAGS: - if (copy_to_user(argp, &cdev->userflags, - sizeof(cdev->userflags))) - return -EFAULT; - return 0; - - case CAPI_NCCI_OPENCOUNT: { - struct capincci *nccip; - unsigned ncci; - int count = 0; - - if (copy_from_user(&ncci, argp, sizeof(ncci))) - return -EFAULT; - - mutex_lock(&cdev->lock); - nccip = capincci_find(cdev, (u32)ncci); - if (nccip) - count = capincci_minor_opencount(nccip); - mutex_unlock(&cdev->lock); - return count; - } - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - case CAPI_NCCI_GETUNIT: { - struct capincci *nccip; - struct capiminor *mp; - unsigned ncci; - int unit = -ESRCH; - - if (copy_from_user(&ncci, argp, sizeof(ncci))) - return -EFAULT; - - mutex_lock(&cdev->lock); - nccip = capincci_find(cdev, (u32)ncci); - if (nccip) { - mp = nccip->minorp; - if (mp) - unit = mp->minor; - } - mutex_unlock(&cdev->lock); - return unit; - } -#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */ - - default: - return -EINVAL; - } -} - -static long -capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -{ - int ret; - - mutex_lock(&capi_mutex); - ret = capi_ioctl(file, cmd, arg); - mutex_unlock(&capi_mutex); - - return ret; -} - -static int capi_open(struct inode *inode, struct file *file) -{ - struct capidev *cdev; - - cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); - if (!cdev) - return -ENOMEM; - - mutex_init(&cdev->lock); - skb_queue_head_init(&cdev->recvqueue); - init_waitqueue_head(&cdev->recvwait); - INIT_LIST_HEAD(&cdev->nccis); - file->private_data = cdev; - - mutex_lock(&capidev_list_lock); - list_add_tail(&cdev->list, &capidev_list); - mutex_unlock(&capidev_list_lock); - - return nonseekable_open(inode, file); -} - -static int capi_release(struct inode *inode, struct file *file) -{ - struct capidev *cdev = file->private_data; - - mutex_lock(&capidev_list_lock); - list_del(&cdev->list); - mutex_unlock(&capidev_list_lock); - - if (cdev->ap.applid) - capi20_release(&cdev->ap); - skb_queue_purge(&cdev->recvqueue); - capincci_free(cdev, 0xffffffff); - - kfree(cdev); - return 0; -} - -static const struct file_operations capi_fops = -{ - .owner = THIS_MODULE, - .llseek = no_llseek, - .read = capi_read, - .write = capi_write, - .poll = capi_poll, - .unlocked_ioctl = capi_unlocked_ioctl, - .open = capi_open, - .release = capi_release, -}; - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE -/* -------- tty_operations for capincci ----------------------------- */ - -static int -capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty) -{ - struct capiminor *mp = capiminor_get(tty->index); - int ret = tty_standard_install(driver, tty); - - if (ret == 0) - tty->driver_data = mp; - else - capiminor_put(mp); - return ret; -} - -static void capinc_tty_cleanup(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - tty->driver_data = NULL; - capiminor_put(mp); -} - -static int capinc_tty_open(struct tty_struct *tty, struct file *filp) -{ - struct capiminor *mp = tty->driver_data; - int err; - - err = tty_port_open(&mp->port, tty, filp); - if (err) - return err; - - handle_minor_recv(mp); - return 0; -} - -static void capinc_tty_close(struct tty_struct *tty, struct file *filp) -{ - struct capiminor *mp = tty->driver_data; - - tty_port_close(&mp->port, tty, filp); -} - -static int capinc_tty_write(struct tty_struct *tty, - const unsigned char *buf, int count) -{ - struct capiminor *mp = tty->driver_data; - struct sk_buff *skb; - - pr_debug("capinc_tty_write(count=%d)\n", count); - - spin_lock_bh(&mp->outlock); - skb = mp->outskb; - if (skb) { - mp->outskb = NULL; - __skb_queue_tail(&mp->outqueue, skb); - mp->outbytes += skb->len; - } - - skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + count, GFP_ATOMIC); - if (!skb) { - printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n"); - spin_unlock_bh(&mp->outlock); - return -ENOMEM; - } - - skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); - memcpy(skb_put(skb, count), buf, count); - - __skb_queue_tail(&mp->outqueue, skb); - mp->outbytes += skb->len; - spin_unlock_bh(&mp->outlock); - - handle_minor_send(mp); - - return count; -} - -static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch) -{ - struct capiminor *mp = tty->driver_data; - bool invoke_send = false; - struct sk_buff *skb; - int ret = 1; - - pr_debug("capinc_put_char(%u)\n", ch); - - spin_lock_bh(&mp->outlock); - skb = mp->outskb; - if (skb) { - if (skb_tailroom(skb) > 0) { - *(skb_put(skb, 1)) = ch; - goto unlock_out; - } - mp->outskb = NULL; - __skb_queue_tail(&mp->outqueue, skb); - mp->outbytes += skb->len; - invoke_send = true; - } - - skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + CAPI_MAX_BLKSIZE, GFP_ATOMIC); - if (skb) { - skb_reserve(skb, CAPI_DATA_B3_REQ_LEN); - *(skb_put(skb, 1)) = ch; - mp->outskb = skb; - } else { - printk(KERN_ERR "capinc_put_char: char %u lost\n", ch); - ret = 0; - } - -unlock_out: - spin_unlock_bh(&mp->outlock); - - if (invoke_send) - handle_minor_send(mp); - - return ret; -} - -static void capinc_tty_flush_chars(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - struct sk_buff *skb; - - pr_debug("capinc_tty_flush_chars\n"); - - spin_lock_bh(&mp->outlock); - skb = mp->outskb; - if (skb) { - mp->outskb = NULL; - __skb_queue_tail(&mp->outqueue, skb); - mp->outbytes += skb->len; - spin_unlock_bh(&mp->outlock); - - handle_minor_send(mp); - } else - spin_unlock_bh(&mp->outlock); - - handle_minor_recv(mp); -} - -static int capinc_tty_write_room(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - int room; - - room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue); - room *= CAPI_MAX_BLKSIZE; - pr_debug("capinc_tty_write_room = %d\n", room); - return room; -} - -static int capinc_tty_chars_in_buffer(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - - pr_debug("capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n", - mp->outbytes, mp->nack, - skb_queue_len(&mp->outqueue), - skb_queue_len(&mp->inqueue)); - return mp->outbytes; -} - -static int capinc_tty_ioctl(struct tty_struct *tty, - unsigned int cmd, unsigned long arg) -{ - return -ENOIOCTLCMD; -} - -static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios *old) -{ - pr_debug("capinc_tty_set_termios\n"); -} - -static void capinc_tty_throttle(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - pr_debug("capinc_tty_throttle\n"); - mp->ttyinstop = 1; -} - -static void capinc_tty_unthrottle(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - - pr_debug("capinc_tty_unthrottle\n"); - mp->ttyinstop = 0; - handle_minor_recv(mp); -} - -static void capinc_tty_stop(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - - pr_debug("capinc_tty_stop\n"); - mp->ttyoutstop = 1; -} - -static void capinc_tty_start(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - - pr_debug("capinc_tty_start\n"); - mp->ttyoutstop = 0; - handle_minor_send(mp); -} - -static void capinc_tty_hangup(struct tty_struct *tty) -{ - struct capiminor *mp = tty->driver_data; - - pr_debug("capinc_tty_hangup\n"); - tty_port_hangup(&mp->port); -} - -static int capinc_tty_break_ctl(struct tty_struct *tty, int state) -{ - pr_debug("capinc_tty_break_ctl(%d)\n", state); - return 0; -} - -static void capinc_tty_flush_buffer(struct tty_struct *tty) -{ - pr_debug("capinc_tty_flush_buffer\n"); -} - -static void capinc_tty_set_ldisc(struct tty_struct *tty) -{ - pr_debug("capinc_tty_set_ldisc\n"); -} - -static void capinc_tty_send_xchar(struct tty_struct *tty, char ch) -{ - pr_debug("capinc_tty_send_xchar(%d)\n", ch); -} - -static const struct tty_operations capinc_ops = { - .open = capinc_tty_open, - .close = capinc_tty_close, - .write = capinc_tty_write, - .put_char = capinc_tty_put_char, - .flush_chars = capinc_tty_flush_chars, - .write_room = capinc_tty_write_room, - .chars_in_buffer = capinc_tty_chars_in_buffer, - .ioctl = capinc_tty_ioctl, - .set_termios = capinc_tty_set_termios, - .throttle = capinc_tty_throttle, - .unthrottle = capinc_tty_unthrottle, - .stop = capinc_tty_stop, - .start = capinc_tty_start, - .hangup = capinc_tty_hangup, - .break_ctl = capinc_tty_break_ctl, - .flush_buffer = capinc_tty_flush_buffer, - .set_ldisc = capinc_tty_set_ldisc, - .send_xchar = capinc_tty_send_xchar, - .install = capinc_tty_install, - .cleanup = capinc_tty_cleanup, -}; - -static int __init capinc_tty_init(void) -{ - struct tty_driver *drv; - int err; - - if (capi_ttyminors > CAPINC_MAX_PORTS) - capi_ttyminors = CAPINC_MAX_PORTS; - if (capi_ttyminors <= 0) - capi_ttyminors = CAPINC_NR_PORTS; - - capiminors = kzalloc(sizeof(struct capi_minor *) * capi_ttyminors, - GFP_KERNEL); - if (!capiminors) - return -ENOMEM; - - drv = alloc_tty_driver(capi_ttyminors); - if (!drv) { - kfree(capiminors); - return -ENOMEM; - } - drv->driver_name = "capi_nc"; - drv->name = "capi"; - drv->major = 0; - drv->minor_start = 0; - drv->type = TTY_DRIVER_TYPE_SERIAL; - drv->subtype = SERIAL_TYPE_NORMAL; - drv->init_termios = tty_std_termios; - drv->init_termios.c_iflag = ICRNL; - drv->init_termios.c_oflag = OPOST | ONLCR; - drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - drv->init_termios.c_lflag = 0; - drv->flags = - TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS | - TTY_DRIVER_DYNAMIC_DEV; - tty_set_operations(drv, &capinc_ops); - - err = tty_register_driver(drv); - if (err) { - put_tty_driver(drv); - kfree(capiminors); - printk(KERN_ERR "Couldn't register capi_nc driver\n"); - return err; - } - capinc_tty_driver = drv; - return 0; -} - -static void __exit capinc_tty_exit(void) -{ - tty_unregister_driver(capinc_tty_driver); - put_tty_driver(capinc_tty_driver); - kfree(capiminors); -} - -#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ - -static inline int capinc_tty_init(void) -{ - return 0; -} - -static inline void capinc_tty_exit(void) { } - -#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */ - -/* -------- /proc functions ----------------------------------------- */ - -/* - * /proc/capi/capi20: - * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt - */ -static int capi20_proc_show(struct seq_file *m, void *v) -{ - struct capidev *cdev; - struct list_head *l; - - mutex_lock(&capidev_list_lock); - list_for_each(l, &capidev_list) { - cdev = list_entry(l, struct capidev, list); - seq_printf(m, "0 %d %lu %lu %lu %lu\n", - cdev->ap.applid, - cdev->ap.nrecvctlpkt, - cdev->ap.nrecvdatapkt, - cdev->ap.nsentctlpkt, - cdev->ap.nsentdatapkt); - } - mutex_unlock(&capidev_list_lock); - return 0; -} - -static int capi20_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, capi20_proc_show, NULL); -} - -static const struct file_operations capi20_proc_fops = { - .owner = THIS_MODULE, - .open = capi20_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -/* - * /proc/capi/capi20ncci: - * applid ncci - */ -static int capi20ncci_proc_show(struct seq_file *m, void *v) -{ - struct capidev *cdev; - struct capincci *np; - - mutex_lock(&capidev_list_lock); - list_for_each_entry(cdev, &capidev_list, list) { - mutex_lock(&cdev->lock); - list_for_each_entry(np, &cdev->nccis, list) - seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci); - mutex_unlock(&cdev->lock); - } - mutex_unlock(&capidev_list_lock); - return 0; -} - -static int capi20ncci_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, capi20ncci_proc_show, NULL); -} - -static const struct file_operations capi20ncci_proc_fops = { - .owner = THIS_MODULE, - .open = capi20ncci_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static void __init proc_init(void) -{ - proc_create("capi/capi20", 0, NULL, &capi20_proc_fops); - proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops); -} - -static void __exit proc_exit(void) -{ - remove_proc_entry("capi/capi20", NULL); - remove_proc_entry("capi/capi20ncci", NULL); -} - -/* -------- init function and module interface ---------------------- */ - - -static int __init capi_init(void) -{ - const char *compileinfo; - int major_ret; - - major_ret = register_chrdev(capi_major, "capi20", &capi_fops); - if (major_ret < 0) { - printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); - return major_ret; - } - capi_class = class_create(THIS_MODULE, "capi"); - if (IS_ERR(capi_class)) { - unregister_chrdev(capi_major, "capi20"); - return PTR_ERR(capi_class); - } - - device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi"); - - if (capinc_tty_init() < 0) { - device_destroy(capi_class, MKDEV(capi_major, 0)); - class_destroy(capi_class); - unregister_chrdev(capi_major, "capi20"); - return -ENOMEM; - } - - proc_init(); - -#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - compileinfo = " (middleware)"; -#else - compileinfo = " (no middleware)"; -#endif - printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n", - capi_major, compileinfo); - - return 0; -} - -static void __exit capi_exit(void) -{ - proc_exit(); - - device_destroy(capi_class, MKDEV(capi_major, 0)); - class_destroy(capi_class); - unregister_chrdev(capi_major, "capi20"); - - capinc_tty_exit(); -} - -module_init(capi_init); -module_exit(capi_exit); |