Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
new file mode 100644
index 0000000..0616353
--- /dev/null
+++ b/drivers/isdn/capi/capi.c
@@ -0,0 +1,1554 @@
+/* $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/config.h>
+#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/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+#include <linux/tty.h>
+#ifdef CONFIG_PPP
+#include <linux/netdevice.h>
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#endif /* CONFIG_PPP */
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+#include <linux/skbuff.h>
+#include <linux/proc_fs.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/devfs_fs_kernel.h>
+#include <linux/isdn/capiutil.h>
+#include <linux/isdn/capicmd.h>
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+#include "capifs.h"
+#endif
+
+static char *revision = "$Revision: 1.1.2.7 $";
+
+MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface");
+MODULE_AUTHOR("Carsten Paeth");
+MODULE_LICENSE("GPL");
+
+#undef _DEBUG_REFCOUNT /* alloc/free and open/close debug */
+#undef _DEBUG_TTYFUNCS /* call to tty_driver */
+#undef _DEBUG_DATAFLOW /* data flow */
+
+/* -------- driver information -------------------------------------- */
+
+static struct class_simple *capi_class;
+
+int capi_major = 68; /* allocated */
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+#define CAPINC_NR_PORTS 32
+#define CAPINC_MAX_PORTS 256
+int capi_ttymajor = 191;
+int capi_ttyminors = CAPINC_NR_PORTS;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+module_param_named(major, capi_major, uint, 0);
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+module_param_named(ttymajor, capi_ttymajor, uint, 0);
+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;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+struct capiminor;
+
+struct capiminor {
+ struct list_head list;
+ struct capincci *nccip;
+ unsigned int minor;
+
+ struct capi20_appl *ap;
+ u32 ncci;
+ u16 datahandle;
+ u16 msgid;
+
+ struct tty_struct *tty;
+ int ttyinstop;
+ int ttyoutstop;
+ struct sk_buff *ttyskb;
+ atomic_t ttyopencount;
+
+ struct sk_buff_head inqueue;
+ int inbytes;
+ struct sk_buff_head outqueue;
+ int outbytes;
+
+ /* transmit path */
+ struct datahandle_queue {
+ struct datahandle_queue *next;
+ u16 datahandle;
+ } *ackqueue;
+ int nack;
+
+};
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+struct capincci {
+ struct capincci *next;
+ 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 capincci *nccis;
+
+ struct semaphore ncci_list_sem;
+};
+
+/* -------- global variables ---------------------------------------- */
+
+static DEFINE_RWLOCK(capidev_list_lock);
+static LIST_HEAD(capidev_list);
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+static DEFINE_RWLOCK(capiminor_list_lock);
+static LIST_HEAD(capiminor_list);
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+/* -------- datahandles --------------------------------------------- */
+
+static int capincci_add_ack(struct capiminor *mp, u16 datahandle)
+{
+ struct datahandle_queue *n, **pp;
+
+ n = kmalloc(sizeof(*n), GFP_ATOMIC);
+ if (!n) {
+ printk(KERN_ERR "capi: alloc datahandle failed\n");
+ return -1;
+ }
+ n->next = NULL;
+ n->datahandle = datahandle;
+ for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) ;
+ *pp = n;
+ mp->nack++;
+ return 0;
+}
+
+static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)
+{
+ struct datahandle_queue **pp, *p;
+
+ for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) {
+ if ((*pp)->datahandle == datahandle) {
+ p = *pp;
+ *pp = (*pp)->next;
+ kfree(p);
+ mp->nack--;
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static void capiminor_del_all_ack(struct capiminor *mp)
+{
+ struct datahandle_queue **pp, *p;
+
+ pp = &mp->ackqueue;
+ while (*pp) {
+ p = *pp;
+ *pp = (*pp)->next;
+ kfree(p);
+ mp->nack--;
+ }
+}
+
+
+/* -------- struct capiminor ---------------------------------------- */
+
+static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci)
+{
+ struct capiminor *mp, *p;
+ unsigned int minor = 0;
+ unsigned long flags;
+
+ mp = kmalloc(sizeof(*mp), GFP_ATOMIC);
+ if (!mp) {
+ printk(KERN_ERR "capi: can't alloc capiminor\n");
+ return NULL;
+ }
+
+ memset(mp, 0, sizeof(struct capiminor));
+ mp->ap = ap;
+ mp->ncci = ncci;
+ mp->msgid = 0;
+ atomic_set(&mp->ttyopencount,0);
+
+ skb_queue_head_init(&mp->inqueue);
+ skb_queue_head_init(&mp->outqueue);
+
+ /* Allocate the least unused minor number.
+ */
+ write_lock_irqsave(&capiminor_list_lock, flags);
+ if (list_empty(&capiminor_list))
+ list_add(&mp->list, &capiminor_list);
+ else {
+ list_for_each_entry(p, &capiminor_list, list) {
+ if (p->minor > minor)
+ break;
+ minor++;
+ }
+
+ if (minor < capi_ttyminors) {
+ mp->minor = minor;
+ list_add(&mp->list, p->list.prev);
+ }
+ }
+ write_unlock_irqrestore(&capiminor_list_lock, flags);
+
+ if (!(minor < capi_ttyminors)) {
+ printk(KERN_NOTICE "capi: out of minors\n");
+ kfree(mp);
+ return NULL;
+ }
+
+ return mp;
+}
+
+static void capiminor_free(struct capiminor *mp)
+{
+ unsigned long flags;
+
+ write_lock_irqsave(&capiminor_list_lock, flags);
+ list_del(&mp->list);
+ write_unlock_irqrestore(&capiminor_list_lock, flags);
+
+ if (mp->ttyskb) kfree_skb(mp->ttyskb);
+ mp->ttyskb = NULL;
+ skb_queue_purge(&mp->inqueue);
+ skb_queue_purge(&mp->outqueue);
+ capiminor_del_all_ack(mp);
+ kfree(mp);
+}
+
+struct capiminor *capiminor_find(unsigned int minor)
+{
+ struct list_head *l;
+ struct capiminor *p = NULL;
+
+ read_lock(&capiminor_list_lock);
+ list_for_each(l, &capiminor_list) {
+ p = list_entry(l, struct capiminor, list);
+ if (p->minor == minor)
+ break;
+ }
+ read_unlock(&capiminor_list_lock);
+ if (l == &capiminor_list)
+ return NULL;
+
+ return p;
+}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+/* -------- struct capincci ----------------------------------------- */
+
+static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
+{
+ struct capincci *np, **pp;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ struct capiminor *mp = NULL;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+ np = kmalloc(sizeof(*np), GFP_ATOMIC);
+ if (!np)
+ return NULL;
+ memset(np, 0, sizeof(struct capincci));
+ np->ncci = ncci;
+ np->cdev = cdev;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ mp = NULL;
+ if (cdev->userflags & CAPIFLAG_HIGHJACKING)
+ mp = np->minorp = capiminor_alloc(&cdev->ap, ncci);
+ if (mp) {
+ mp->nccip = np;
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "set mp->nccip\n");
+#endif
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+ capifs_new_ncci(mp->minor, MKDEV(capi_ttymajor, mp->minor));
+#endif
+ }
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ for (pp=&cdev->nccis; *pp; pp = &(*pp)->next)
+ ;
+ *pp = np;
+ return np;
+}
+
+static void capincci_free(struct capidev *cdev, u32 ncci)
+{
+ struct capincci *np, **pp;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ struct capiminor *mp;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+ pp=&cdev->nccis;
+ while (*pp) {
+ np = *pp;
+ if (ncci == 0xffffffff || np->ncci == ncci) {
+ *pp = (*pp)->next;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ if ((mp = np->minorp) != 0) {
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+ capifs_free_ncci(mp->minor);
+#endif
+ if (mp->tty) {
+ mp->nccip = NULL;
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "reset mp->nccip\n");
+#endif
+ tty_hangup(mp->tty);
+ } else {
+ capiminor_free(mp);
+ }
+ }
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ kfree(np);
+ if (*pp == 0) return;
+ } else {
+ pp = &(*pp)->next;
+ }
+ }
+}
+
+static struct capincci *capincci_find(struct capidev *cdev, u32 ncci)
+{
+ struct capincci *p;
+
+ for (p=cdev->nccis; p ; p = p->next) {
+ if (p->ncci == ncci)
+ break;
+ }
+ return p;
+}
+
+/* -------- struct capidev ------------------------------------------ */
+
+static struct capidev *capidev_alloc(void)
+{
+ struct capidev *cdev;
+ unsigned long flags;
+
+ cdev = kmalloc(sizeof(*cdev), GFP_KERNEL);
+ if (!cdev)
+ return NULL;
+ memset(cdev, 0, sizeof(struct capidev));
+
+ init_MUTEX(&cdev->ncci_list_sem);
+ skb_queue_head_init(&cdev->recvqueue);
+ init_waitqueue_head(&cdev->recvwait);
+ write_lock_irqsave(&capidev_list_lock, flags);
+ list_add_tail(&cdev->list, &capidev_list);
+ write_unlock_irqrestore(&capidev_list_lock, flags);
+ return cdev;
+}
+
+static void capidev_free(struct capidev *cdev)
+{
+ unsigned long flags;
+
+ if (cdev->ap.applid) {
+ capi20_release(&cdev->ap);
+ cdev->ap.applid = 0;
+ }
+ skb_queue_purge(&cdev->recvqueue);
+
+ down(&cdev->ncci_list_sem);
+ capincci_free(cdev, 0xffffffff);
+ up(&cdev->ncci_list_sem);
+
+ write_lock_irqsave(&capidev_list_lock, flags);
+ list_del(&cdev->list);
+ write_unlock_irqrestore(&capidev_list_lock, flags);
+ kfree(cdev);
+}
+
+#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_ATOMIC);
+ 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, 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)
+{
+ struct sk_buff *nskb;
+ int datalen;
+ u16 errcode, datahandle;
+ struct tty_ldisc *ld;
+
+ datalen = skb->len - CAPIMSG_LEN(skb->data);
+ if (mp->tty == NULL)
+ {
+#ifdef _DEBUG_DATAFLOW
+ printk(KERN_DEBUG "capi: currently no receiver\n");
+#endif
+ return -1;
+ }
+
+ ld = tty_ldisc_ref(mp->tty);
+ if (ld == NULL)
+ return -1;
+ if (ld->receive_buf == NULL) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+ printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n");
+#endif
+ goto bad;
+ }
+ if (mp->ttyinstop) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+ printk(KERN_DEBUG "capi: recv tty throttled\n");
+#endif
+ goto bad;
+ }
+ if (ld->receive_room &&
+ ld->receive_room(mp->tty) < datalen) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+ printk(KERN_DEBUG "capi: no room in tty\n");
+#endif
+ goto bad;
+ }
+ if ((nskb = gen_data_b3_resp_for(mp, skb)) == 0) {
+ printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
+ goto bad;
+ }
+ datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4);
+ errcode = capi20_put_message(mp->ap, nskb);
+ if (errcode != CAPI_NOERROR) {
+ printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
+ errcode);
+ kfree_skb(nskb);
+ goto bad;
+ }
+ (void)skb_pull(skb, CAPIMSG_LEN(skb->data));
+#ifdef _DEBUG_DATAFLOW
+ printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n",
+ datahandle, skb->len);
+#endif
+ ld->receive_buf(mp->tty, skb->data, NULL, skb->len);
+ kfree_skb(skb);
+ tty_ldisc_deref(ld);
+ return 0;
+bad:
+ tty_ldisc_deref(ld);
+ return -1;
+}
+
+static void handle_minor_recv(struct capiminor *mp)
+{
+ struct sk_buff *skb;
+ while ((skb = skb_dequeue(&mp->inqueue)) != 0) {
+ unsigned int len = skb->len;
+ mp->inbytes -= len;
+ if (handle_recv_skb(mp, skb) < 0) {
+ skb_queue_head(&mp->inqueue, skb);
+ mp->inbytes += len;
+ return;
+ }
+ }
+}
+
+static int handle_minor_send(struct capiminor *mp)
+{
+ struct sk_buff *skb;
+ u16 len;
+ int count = 0;
+ u16 errcode;
+ u16 datahandle;
+
+ if (mp->tty && mp->ttyoutstop) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+ printk(KERN_DEBUG "capi: send: tty stopped\n");
+#endif
+ return 0;
+ }
+
+ while ((skb = skb_dequeue(&mp->outqueue)) != 0) {
+ datahandle = mp->datahandle;
+ len = (u16)skb->len;
+ 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, mp->msgid++);
+ capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */
+ capimsg_setu32(skb->data, 12, (u32) 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 (capincci_add_ack(mp, datahandle) < 0) {
+ skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
+ skb_queue_head(&mp->outqueue, skb);
+ return count;
+ }
+ errcode = capi20_put_message(mp->ap, skb);
+ if (errcode == CAPI_NOERROR) {
+ mp->datahandle++;
+ count++;
+ mp->outbytes -= len;
+#ifdef _DEBUG_DATAFLOW
+ printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n",
+ datahandle, len);
+#endif
+ continue;
+ }
+ capiminor_del_ack(mp, datahandle);
+
+ if (errcode == CAPI_SENDQUEUEFULL) {
+ skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
+ skb_queue_head(&mp->outqueue, skb);
+ break;
+ }
+
+ /* ups, drop packet */
+ printk(KERN_ERR "capi: put_message = %x\n", errcode);
+ mp->outbytes -= len;
+ kfree_skb(skb);
+ }
+ return count;
+}
+
+#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 capiminor *mp;
+ u16 datahandle;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ struct capincci *np;
+ u32 ncci;
+
+ if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) {
+ u16 info = CAPIMSG_U16(skb->data, 12); // Info field
+ if (info == 0) {
+ down(&cdev->ncci_list_sem);
+ capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));
+ up(&cdev->ncci_list_sem);
+ }
+ }
+ if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) {
+ down(&cdev->ncci_list_sem);
+ capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));
+ up(&cdev->ncci_list_sem);
+ }
+ if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) {
+ skb_queue_tail(&cdev->recvqueue, skb);
+ wake_up_interruptible(&cdev->recvwait);
+ return;
+ }
+ ncci = CAPIMSG_CONTROL(skb->data);
+ for (np = cdev->nccis; np && np->ncci != ncci; np = np->next)
+ ;
+ if (!np) {
+ printk(KERN_ERR "BUG: capi_signal: ncci not found\n");
+ skb_queue_tail(&cdev->recvqueue, skb);
+ wake_up_interruptible(&cdev->recvwait);
+ return;
+ }
+#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);
+ return;
+ }
+
+
+ if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
+
+ datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2);
+#ifdef _DEBUG_DATAFLOW
+ printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n",
+ datahandle, skb->len-CAPIMSG_LEN(skb->data));
+#endif
+ skb_queue_tail(&mp->inqueue, skb);
+ mp->inbytes += skb->len;
+ handle_minor_recv(mp);
+
+ } else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) {
+
+ datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4);
+#ifdef _DEBUG_DATAFLOW
+ printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n",
+ datahandle,
+ CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2));
+#endif
+ kfree_skb(skb);
+ (void)capiminor_del_ack(mp, datahandle);
+ if (mp->tty)
+ tty_wakeup(mp->tty);
+ (void)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 */
+}
+
+/* -------- file_operations for capidev ----------------------------- */
+
+static ssize_t
+capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+ struct capidev *cdev = (struct capidev *)file->private_data;
+ struct sk_buff *skb;
+ size_t copied;
+
+ if (!cdev->ap.applid)
+ return -ENODEV;
+
+ if ((skb = skb_dequeue(&cdev->recvqueue)) == 0) {
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ for (;;) {
+ interruptible_sleep_on(&cdev->recvwait);
+ if ((skb = skb_dequeue(&cdev->recvqueue)) != 0)
+ break;
+ if (signal_pending(current))
+ break;
+ }
+ if (skb == 0)
+ return -ERESTARTNOHAND;
+ }
+ 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 = (struct capidev *)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) {
+ down(&cdev->ncci_list_sem);
+ capincci_free(cdev, CAPIMSG_NCCI(skb->data));
+ up(&cdev->ncci_list_sem);
+ }
+
+ 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 = (struct capidev *)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 inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct capidev *cdev = file->private_data;
+ struct capi20_appl *ap = &cdev->ap;
+ capi_ioctl_struct data;
+ int retval = -EINVAL;
+ void __user *argp = (void __user *)arg;
+
+ switch (cmd) {
+ case CAPI_REGISTER:
+ {
+ if (ap->applid)
+ return -EEXIST;
+
+ if (copy_from_user(&cdev->ap.rparam, argp,
+ sizeof(struct capi_register_params)))
+ return -EFAULT;
+
+ cdev->ap.private = cdev;
+ cdev->ap.recv_message = capi_recv_message;
+ cdev->errcode = capi20_register(ap);
+ if (cdev->errcode) {
+ ap->applid = 0;
+ return -EIO;
+ }
+ }
+ return (int)ap->applid;
+
+ 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;
+ if (cmd == CAPI_SET_FLAGS)
+ cdev->userflags |= userflags;
+ else
+ cdev->userflags &= ~userflags;
+ }
+ 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;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ struct capiminor *mp;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ unsigned ncci;
+ int count = 0;
+ if (copy_from_user(&ncci, argp, sizeof(ncci)))
+ return -EFAULT;
+
+ down(&cdev->ncci_list_sem);
+ if ((nccip = capincci_find(cdev, (u32) ncci)) == 0) {
+ up(&cdev->ncci_list_sem);
+ return 0;
+ }
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ if ((mp = nccip->minorp) != 0) {
+ count += atomic_read(&mp->ttyopencount);
+ }
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ up(&cdev->ncci_list_sem);
+ return count;
+ }
+ return 0;
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ case CAPI_NCCI_GETUNIT:
+ {
+ struct capincci *nccip;
+ struct capiminor *mp;
+ unsigned ncci;
+ int unit = 0;
+ if (copy_from_user(&ncci, argp,
+ sizeof(ncci)))
+ return -EFAULT;
+ down(&cdev->ncci_list_sem);
+ nccip = capincci_find(cdev, (u32) ncci);
+ if (!nccip || (mp = nccip->minorp) == 0) {
+ up(&cdev->ncci_list_sem);
+ return -ESRCH;
+ }
+ unit = mp->minor;
+ up(&cdev->ncci_list_sem);
+ return unit;
+ }
+ return 0;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ }
+ return -EINVAL;
+}
+
+static int
+capi_open(struct inode *inode, struct file *file)
+{
+ if (file->private_data)
+ return -EEXIST;
+
+ if ((file->private_data = capidev_alloc()) == 0)
+ return -ENOMEM;
+
+ return nonseekable_open(inode, file);
+}
+
+static int
+capi_release(struct inode *inode, struct file *file)
+{
+ struct capidev *cdev = (struct capidev *)file->private_data;
+
+ capidev_free(cdev);
+ file->private_data = NULL;
+
+ return 0;
+}
+
+static struct file_operations capi_fops =
+{
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = capi_read,
+ .write = capi_write,
+ .poll = capi_poll,
+ .ioctl = capi_ioctl,
+ .open = capi_open,
+ .release = capi_release,
+};
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+/* -------- tty_operations for capincci ----------------------------- */
+
+static int capinc_tty_open(struct tty_struct * tty, struct file * file)
+{
+ struct capiminor *mp;
+
+ if ((mp = capiminor_find(iminor(file->f_dentry->d_inode))) == 0)
+ return -ENXIO;
+ if (mp->nccip == 0)
+ return -ENXIO;
+
+ tty->driver_data = (void *)mp;
+
+ if (atomic_read(&mp->ttyopencount) == 0)
+ mp->tty = tty;
+ atomic_inc(&mp->ttyopencount);
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount));
+#endif
+ handle_minor_recv(mp);
+ return 0;
+}
+
+static void capinc_tty_close(struct tty_struct * tty, struct file * file)
+{
+ struct capiminor *mp;
+
+ mp = (struct capiminor *)tty->driver_data;
+ if (mp) {
+ if (atomic_dec_and_test(&mp->ttyopencount)) {
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "capinc_tty_close lastclose\n");
+#endif
+ tty->driver_data = NULL;
+ mp->tty = NULL;
+ }
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "capinc_tty_close ocount=%d\n", atomic_read(&mp->ttyopencount));
+#endif
+ if (mp->nccip == 0)
+ capiminor_free(mp);
+ }
+
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "capinc_tty_close\n");
+#endif
+}
+
+static int capinc_tty_write(struct tty_struct * tty,
+ const unsigned char *buf, int count)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct sk_buff *skb;
+
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_write(count=%d)\n", count);
+#endif
+
+ if (!mp || !mp->nccip) {
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_write: mp or mp->ncci NULL\n");
+#endif
+ return 0;
+ }
+
+ skb = mp->ttyskb;
+ if (skb) {
+ mp->ttyskb = 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");
+ 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;
+ (void)handle_minor_send(mp);
+ (void)handle_minor_recv(mp);
+ return count;
+}
+
+static void capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct sk_buff *skb;
+
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_put_char(%u)\n", ch);
+#endif
+
+ if (!mp || !mp->nccip) {
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_put_char: mp or mp->ncci NULL\n");
+#endif
+ return;
+ }
+
+ skb = mp->ttyskb;
+ if (skb) {
+ if (skb_tailroom(skb) > 0) {
+ *(skb_put(skb, 1)) = ch;
+ return;
+ }
+ mp->ttyskb = NULL;
+ skb_queue_tail(&mp->outqueue, skb);
+ mp->outbytes += skb->len;
+ (void)handle_minor_send(mp);
+ }
+ 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->ttyskb = skb;
+ } else {
+ printk(KERN_ERR "capinc_put_char: char %u lost\n", ch);
+ }
+}
+
+static void capinc_tty_flush_chars(struct tty_struct *tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ struct sk_buff *skb;
+
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_flush_chars\n");
+#endif
+
+ if (!mp || !mp->nccip) {
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_flush_chars: mp or mp->ncci NULL\n");
+#endif
+ return;
+ }
+
+ skb = mp->ttyskb;
+ if (skb) {
+ mp->ttyskb = NULL;
+ skb_queue_tail(&mp->outqueue, skb);
+ mp->outbytes += skb->len;
+ (void)handle_minor_send(mp);
+ }
+ (void)handle_minor_recv(mp);
+}
+
+static int capinc_tty_write_room(struct tty_struct *tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ int room;
+ if (!mp || !mp->nccip) {
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_write_room: mp or mp->ncci NULL\n");
+#endif
+ return 0;
+ }
+ room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue);
+ room *= CAPI_MAX_BLKSIZE;
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_write_room = %d\n", room);
+#endif
+ return room;
+}
+
+int capinc_tty_chars_in_buffer(struct tty_struct *tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+ if (!mp || !mp->nccip) {
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_chars_in_buffer: mp or mp->ncci NULL\n");
+#endif
+ return 0;
+ }
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_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));
+#endif
+ return mp->outbytes;
+}
+
+static int capinc_tty_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ int error = 0;
+ switch (cmd) {
+ default:
+ error = n_tty_ioctl (tty, file, cmd, arg);
+ break;
+ }
+ return error;
+}
+
+static void capinc_tty_set_termios(struct tty_struct *tty, struct termios * old)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_set_termios\n");
+#endif
+}
+
+static void capinc_tty_throttle(struct tty_struct * tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_throttle\n");
+#endif
+ if (mp)
+ mp->ttyinstop = 1;
+}
+
+static void capinc_tty_unthrottle(struct tty_struct * tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_unthrottle\n");
+#endif
+ if (mp) {
+ mp->ttyinstop = 0;
+ handle_minor_recv(mp);
+ }
+}
+
+static void capinc_tty_stop(struct tty_struct *tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_stop\n");
+#endif
+ if (mp) {
+ mp->ttyoutstop = 1;
+ }
+}
+
+static void capinc_tty_start(struct tty_struct *tty)
+{
+ struct capiminor *mp = (struct capiminor *)tty->driver_data;
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_start\n");
+#endif
+ if (mp) {
+ mp->ttyoutstop = 0;
+ (void)handle_minor_send(mp);
+ }
+}
+
+static void capinc_tty_hangup(struct tty_struct *tty)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_hangup\n");
+#endif
+}
+
+static void capinc_tty_break_ctl(struct tty_struct *tty, int state)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_break_ctl(%d)\n", state);
+#endif
+}
+
+static void capinc_tty_flush_buffer(struct tty_struct *tty)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_flush_buffer\n");
+#endif
+}
+
+static void capinc_tty_set_ldisc(struct tty_struct *tty)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_set_ldisc\n");
+#endif
+}
+
+static void capinc_tty_send_xchar(struct tty_struct *tty, char ch)
+{
+#ifdef _DEBUG_TTYFUNCS
+ printk(KERN_DEBUG "capinc_tty_send_xchar(%d)\n", ch);
+#endif
+}
+
+static int capinc_tty_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ return 0;
+}
+
+static struct tty_driver *capinc_tty_driver;
+
+static 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,
+ .read_proc = capinc_tty_read_proc,
+};
+
+static int capinc_tty_init(void)
+{
+ struct tty_driver *drv;
+
+ if (capi_ttyminors > CAPINC_MAX_PORTS)
+ capi_ttyminors = CAPINC_MAX_PORTS;
+ if (capi_ttyminors <= 0)
+ capi_ttyminors = CAPINC_NR_PORTS;
+
+ drv = alloc_tty_driver(capi_ttyminors);
+ if (!drv)
+ return -ENOMEM;
+
+ drv->owner = THIS_MODULE;
+ drv->driver_name = "capi_nc";
+ drv->devfs_name = "capi/";
+ drv->name = "capi";
+ drv->major = capi_ttymajor;
+ 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_set_operations(drv, &capinc_ops);
+ if (tty_register_driver(drv)) {
+ put_tty_driver(drv);
+ printk(KERN_ERR "Couldn't register capi_nc driver\n");
+ return -1;
+ }
+ capinc_tty_driver = drv;
+ return 0;
+}
+
+static void capinc_tty_exit(void)
+{
+ struct tty_driver *drv = capinc_tty_driver;
+ int retval;
+ if ((retval = tty_unregister_driver(drv)))
+ printk(KERN_ERR "capi: failed to unregister capi_nc driver (%d)\n", retval);
+ put_tty_driver(drv);
+}
+
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+/* -------- /proc functions ----------------------------------------- */
+
+/*
+ * /proc/capi/capi20:
+ * minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
+ */
+static int proc_capidev_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct capidev *cdev;
+ struct list_head *l;
+ int len = 0;
+
+ read_lock(&capidev_list_lock);
+ list_for_each(l, &capidev_list) {
+ cdev = list_entry(l, struct capidev, list);
+ len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n",
+ cdev->ap.applid,
+ cdev->ap.nrecvctlpkt,
+ cdev->ap.nrecvdatapkt,
+ cdev->ap.nsentctlpkt,
+ cdev->ap.nsentdatapkt);
+ if (len <= off) {
+ off -= len;
+ len = 0;
+ } else {
+ if (len-off > count)
+ goto endloop;
+ }
+ }
+
+endloop:
+ read_unlock(&capidev_list_lock);
+ if (len < count)
+ *eof = 1;
+ if (len > count) len = count;
+ if (len < 0) len = 0;
+ return len;
+}
+
+/*
+ * /proc/capi/capi20ncci:
+ * applid ncci
+ */
+static int proc_capincci_read_proc(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct capidev *cdev;
+ struct capincci *np;
+ struct list_head *l;
+ int len = 0;
+
+ read_lock(&capidev_list_lock);
+ list_for_each(l, &capidev_list) {
+ cdev = list_entry(l, struct capidev, list);
+ for (np=cdev->nccis; np; np = np->next) {
+ len += sprintf(page+len, "%d 0x%x\n",
+ cdev->ap.applid,
+ np->ncci);
+ if (len <= off) {
+ off -= len;
+ len = 0;
+ } else {
+ if (len-off > count)
+ goto endloop;
+ }
+ }
+ }
+endloop:
+ read_unlock(&capidev_list_lock);
+ *start = page+off;
+ if (len < count)
+ *eof = 1;
+ if (len>count) len = count;
+ if (len<0) len = 0;
+ return len;
+}
+
+static struct procfsentries {
+ char *name;
+ mode_t mode;
+ int (*read_proc)(char *page, char **start, off_t off,
+ int count, int *eof, void *data);
+ struct proc_dir_entry *procent;
+} procfsentries[] = {
+ /* { "capi", S_IFDIR, 0 }, */
+ { "capi/capi20", 0 , proc_capidev_read_proc },
+ { "capi/capi20ncci", 0 , proc_capincci_read_proc },
+};
+
+static void __init proc_init(void)
+{
+ int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
+ int i;
+
+ for (i=0; i < nelem; i++) {
+ struct procfsentries *p = procfsentries + i;
+ p->procent = create_proc_entry(p->name, p->mode, NULL);
+ if (p->procent) p->procent->read_proc = p->read_proc;
+ }
+}
+
+static void __exit proc_exit(void)
+{
+ int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
+ int i;
+
+ for (i=nelem-1; i >= 0; i--) {
+ struct procfsentries *p = procfsentries + i;
+ if (p->procent) {
+ remove_proc_entry(p->name, NULL);
+ p->procent = NULL;
+ }
+ }
+}
+
+/* -------- init function and module interface ---------------------- */
+
+
+static char rev[32];
+
+static int __init capi_init(void)
+{
+ char *p;
+ char *compileinfo;
+
+ if ((p = strchr(revision, ':')) != 0 && p[1]) {
+ strlcpy(rev, p + 2, sizeof(rev));
+ if ((p = strchr(rev, '$')) != 0 && p > rev)
+ *(p-1) = 0;
+ } else
+ strcpy(rev, "1.0");
+
+ if (register_chrdev(capi_major, "capi20", &capi_fops)) {
+ printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);
+ return -EIO;
+ }
+
+ capi_class = class_simple_create(THIS_MODULE, "capi");
+ if (IS_ERR(capi_class)) {
+ unregister_chrdev(capi_major, "capi20");
+ return PTR_ERR(capi_class);
+ }
+
+ class_simple_device_add(capi_class, MKDEV(capi_major, 0), NULL, "capi");
+ devfs_mk_cdev(MKDEV(capi_major, 0), S_IFCHR | S_IRUSR | S_IWUSR,
+ "isdn/capi20");
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ if (capinc_tty_init() < 0) {
+ class_simple_device_remove(MKDEV(capi_major, 0));
+ class_simple_destroy(capi_class);
+ unregister_chrdev(capi_major, "capi20");
+ return -ENOMEM;
+ }
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+ proc_init();
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+ compileinfo = " (middleware+capifs)";
+#else
+ compileinfo = " (no capifs)";
+#endif
+#else
+ compileinfo = " (no middleware)";
+#endif
+ printk(KERN_NOTICE "capi20: Rev %s: started up with major %d%s\n",
+ rev, capi_major, compileinfo);
+
+ return 0;
+}
+
+static void __exit capi_exit(void)
+{
+ proc_exit();
+
+ class_simple_device_remove(MKDEV(capi_major, 0));
+ class_simple_destroy(capi_class);
+ unregister_chrdev(capi_major, "capi20");
+ devfs_remove("isdn/capi20");
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+ capinc_tty_exit();
+#endif
+ printk(KERN_NOTICE "capi: Rev %s: unloaded\n", rev);
+}
+
+module_init(capi_init);
+module_exit(capi_exit);