Release 4.7 drivers/isdn/mISDN/core.c

Directory: drivers/isdn/mISDN
/*
 * Copyright 2008  by Karsten Keil <kkeil@novell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/slab.h>
#include <linux/types.h>
#include <linux/stddef.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/mISDNif.h>
#include "core.h"


static u_int debug;

MODULE_AUTHOR("Karsten Keil");
MODULE_LICENSE("GPL");
module_param(debug, uint, S_IRUGO | S_IWUSR);


static u64		device_ids;

#define MAX_DEVICE_ID	63

static LIST_HEAD(Bprotocols);
static DEFINE_RWLOCK(bp_lock);



static void mISDN_dev_release(struct device *dev)
{
	/* nothing to do: the device is part of its parent's data structure */
}

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matthias urlichs matthias urlichs 10 83.33% 1 50.00%
karsten keil karsten keil 2 16.67% 1 50.00%
Total 12 100.00% 2 100.00%



static ssize_t id_show(struct device *dev,
		       struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return -ENODEV;
	return sprintf(buf, "%d\n", mdev->id);
}
Contributors
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matthias urlichs matthias urlichs 48 94.12% 1 33.33%
karsten keil karsten keil 2 3.92% 1 33.33%
greg kroah-hartman greg kroah-hartman 1 1.96% 1 33.33%
Total 51 100.00% 3 100.00%

static DEVICE_ATTR_RO(id);



static ssize_t nrbchan_show(struct device *dev,
			    struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return -ENODEV;
	return sprintf(buf, "%d\n", mdev->nrbchan);
}
Contributors
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matthias urlichs matthias urlichs 42 82.35% 1 33.33%
karsten keil karsten keil 8 15.69% 1 33.33%
greg kroah-hartman greg kroah-hartman 1 1.96% 1 33.33%
Total 51 100.00% 3 100.00%

static DEVICE_ATTR_RO(nrbchan);



static ssize_t d_protocols_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return -ENODEV;
	return sprintf(buf, "%d\n", mdev->Dprotocols);
}
Contributors
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matthias urlichs matthias urlichs 50 98.04% 1 50.00%
greg kroah-hartman greg kroah-hartman 1 1.96% 1 50.00%
Total 51 100.00% 2 100.00%

static DEVICE_ATTR_RO(d_protocols);



static ssize_t b_protocols_show(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return -ENODEV;
	return sprintf(buf, "%d\n", mdev->Bprotocols | get_all_Bprotocols());
}
Contributors
Person Tokens Prop Commits CommitProp
matthias urlichs matthias urlichs 53 98.15% 1 50.00%
greg kroah-hartman greg kroah-hartman 1 1.85% 1 50.00%
Total 54 100.00% 2 100.00%

static DEVICE_ATTR_RO(b_protocols);



static ssize_t protocol_show(struct device *dev,
			     struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return -ENODEV;
	return sprintf(buf, "%d\n", mdev->D.protocol);
}
Contributors
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matthias urlichs matthias urlichs 52 98.11% 1 50.00%
greg kroah-hartman greg kroah-hartman 1 1.89% 1 50.00%
Total 53 100.00% 2 100.00%

static DEVICE_ATTR_RO(protocol);



static ssize_t name_show(struct device *dev,
			 struct device_attribute *attr, char *buf)
{
	strcpy(buf, dev_name(dev));
	return strlen(buf);
}
Contributors
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matthias urlichs matthias urlichs 33 91.67% 1 33.33%
karsten keil karsten keil 2 5.56% 1 33.33%
greg kroah-hartman greg kroah-hartman 1 2.78% 1 33.33%
Total 36 100.00% 3 100.00%

static DEVICE_ATTR_RO(name);

#if 0 /* hangs */
static ssize_t name_set(struct device *dev, struct device_attribute *attr,
                        const char *buf, size_t count)
{
        int err = 0;
        char *out = kmalloc(count + 1, GFP_KERNEL);

        if (!out)
                return -ENOMEM;

        memcpy(out, buf, count);
        if (count && out[count - 1] == '\n')
                out[--count] = 0;
        if (count)
                err = device_rename(dev, out);
        kfree(out);

        return (err < 0) ? err : count;
}
static DEVICE_ATTR_RW(name);
#endif



static ssize_t channelmap_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);
	char *bp = buf;
	int i;

	for (i = 0; i <= mdev->nrbchan; i++)
		*bp++ = test_channelmap(i, mdev->channelmap) ? '1' : '0';

	return bp - buf;
}
Contributors
Person Tokens Prop Commits CommitProp
matthias urlichs matthias urlichs 73 96.05% 1 33.33%
karsten keil karsten keil 2 2.63% 1 33.33%
greg kroah-hartman greg kroah-hartman 1 1.32% 1 33.33%
Total 76 100.00% 3 100.00%

static DEVICE_ATTR_RO(channelmap);


static struct attribute *mISDN_attrs[] = {
	&dev_attr_id.attr,
	&dev_attr_d_protocols.attr,
	&dev_attr_b_protocols.attr,
	&dev_attr_protocol.attr,
	&dev_attr_channelmap.attr,
	&dev_attr_nrbchan.attr,
	&dev_attr_name.attr,
	NULL,
};

ATTRIBUTE_GROUPS(mISDN);



static int mISDN_uevent(struct device *dev, struct kobj_uevent_env *env)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return 0;

	if (add_uevent_var(env, "nchans=%d", mdev->nrbchan))
		return -ENOMEM;

	return 0;
}

Contributors
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matthias urlichs matthias urlichs 52 96.30% 1 50.00%
karsten keil karsten keil 2 3.70% 1 50.00%
Total 54 100.00% 2 100.00%



static void mISDN_class_release(struct class *cls)
{
	/* do nothing, it's static */
}

Contributors
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matthias urlichs matthias urlichs 12 100.00% 1 100.00%
Total 12 100.00% 1 100.00%


static struct class mISDN_class = {
	.name = "mISDN",
	.owner = THIS_MODULE,
	.dev_uevent = mISDN_uevent,
	.dev_groups = mISDN_groups,
	.dev_release = mISDN_dev_release,
	.class_release = mISDN_class_release,
};


static int

_get_mdevice(struct device *dev, const void *id)
{
	struct mISDNdevice *mdev = dev_to_mISDN(dev);

	if (!mdev)
		return 0;
	if (mdev->id != *(const u_int *)id)
		return 0;
	return 1;
}

Contributors
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matthias urlichs matthias urlichs 49 90.74% 1 33.33%
karsten keil karsten keil 3 5.56% 1 33.33%
michal miroslaw michal miroslaw 2 3.70% 1 33.33%
Total 54 100.00% 3 100.00%


struct mISDNdevice

*get_mdevice(u_int id)
{
	return dev_to_mISDN(class_find_device(&mISDN_class, NULL, &id,
					      _get_mdevice));
}

Contributors
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matthias urlichs matthias urlichs 20 74.07% 1 50.00%
karsten keil karsten keil 7 25.93% 1 50.00%
Total 27 100.00% 2 100.00%


static int

_get_mdevice_count(struct device *dev, void *cnt)
{
	*(int *)cnt += 1;
	return 0;
}

Contributors
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matthias urlichs matthias urlichs 23 85.19% 1 50.00%
karsten keil karsten keil 4 14.81% 1 50.00%
Total 27 100.00% 2 100.00%


int

get_mdevice_count(void)
{
	int cnt = 0;

	class_for_each_device(&mISDN_class, NULL, &cnt, _get_mdevice_count);
	return cnt;
}

Contributors
Person Tokens Prop Commits CommitProp
karsten keil karsten keil 22 78.57% 1 50.00%
matthias urlichs matthias urlichs 6 21.43% 1 50.00%
Total 28 100.00% 2 100.00%


static int

get_free_devid(void)
{
	u_int	i;

	for (i = 0; i <= MAX_DEVICE_ID; i++)
		if (!test_and_set_bit(i, (u_long *)&device_ids))
			break;
	if (i > MAX_DEVICE_ID)
		return -EBUSY;
	return i;
}

Contributors
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karsten keil karsten keil 43 81.13% 1 33.33%
matthias urlichs matthias urlichs 9 16.98% 1 33.33%
roel kluin roel kluin 1 1.89% 1 33.33%
Total 53 100.00% 3 100.00%


int

mISDN_register_device(struct mISDNdevice *dev,
		      struct device *parent, char *name)
{
	int	err;

	err = get_free_devid();
	if (err < 0)
		goto error1;
	dev->id = err;

	device_initialize(&dev->dev);
	if (name && name[0])
		dev_set_name(&dev->dev, "%s", name);
	else
		dev_set_name(&dev->dev, "mISDN%d", dev->id);
	if (debug & DEBUG_CORE)
		printk(KERN_DEBUG "mISDN_register %s %d\n",
		       dev_name(&dev->dev), dev->id);
	err = create_stack(dev);
	if (err)
		goto error1;

	dev->dev.class = &mISDN_class;
	dev->dev.platform_data = dev;
	dev->dev.parent = parent;
	dev_set_drvdata(&dev->dev, dev);

	err = device_add(&dev->dev);
	if (err)
		goto error3;
	return 0;

error3:
	delete_stack(dev);
	return err;
error1:
	return err;

}
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karsten keil karsten keil 100 51.55% 1 25.00%
matthias urlichs matthias urlichs 86 44.33% 2 50.00%
roel kluin roel kluin 8 4.12% 1 25.00%
Total 194 100.00% 4 100.00%


EXPORT_SYMBOL(mISDN_register_device);


void

mISDN_unregister_device(struct mISDNdevice *dev) {
	if (debug & DEBUG_CORE)
		printk(KERN_DEBUG "mISDN_unregister %s %d\n",
		       dev_name(&dev->dev), dev->id);
	/* sysfs_remove_link(&dev->dev.kobj, "device"); */
	device_del(&dev->dev);
	dev_set_drvdata(&dev->dev, NULL);

	test_and_clear_bit(dev->id, (u_long *)&device_ids);
	delete_stack(dev);
	put_device(&dev->dev);
}
Contributors
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karsten keil karsten keil 59 73.75% 1 33.33%
matthias urlichs matthias urlichs 21 26.25% 2 66.67%
Total 80 100.00% 3 100.00%


EXPORT_SYMBOL(mISDN_unregister_device);


u_int

get_all_Bprotocols(void)
{
	struct Bprotocol	*bp;
	u_int	m = 0;

	read_lock(&bp_lock);
	list_for_each_entry(bp, &Bprotocols, list)
		m |= bp->Bprotocols;
	read_unlock(&bp_lock);
	return m;
}

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karsten keil karsten keil 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%


struct Bprotocol *

get_Bprotocol4mask(u_int m)
{
	struct Bprotocol	*bp;

	read_lock(&bp_lock);
	list_for_each_entry(bp, &Bprotocols, list)
		if (bp->Bprotocols & m) {
			read_unlock(&bp_lock);
			return bp;
		}
	read_unlock(&bp_lock);
	return NULL;
}

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karsten keil karsten keil 57 100.00% 1 100.00%
Total 57 100.00% 1 100.00%


struct Bprotocol *

get_Bprotocol4id(u_int id)
{
	u_int	m;

	if (id < ISDN_P_B_START || id > 63) {
		printk(KERN_WARNING "%s id not in range  %d\n",
		       __func__, id);
		return NULL;
	}
	m = 1 << (id & ISDN_P_B_MASK);
	return get_Bprotocol4mask(m);
}

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karsten keil karsten keil 54 100.00% 1 100.00%
Total 54 100.00% 1 100.00%


int

mISDN_register_Bprotocol(struct Bprotocol *bp)
{
	u_long			flags;
	struct Bprotocol	*old;

	if (debug & DEBUG_CORE)
		printk(KERN_DEBUG "%s: %s/%x\n", __func__,
		       bp->name, bp->Bprotocols);
	old = get_Bprotocol4mask(bp->Bprotocols);
	if (old) {
		printk(KERN_WARNING
		       "register duplicate protocol old %s/%x new %s/%x\n",
		       old->name, old->Bprotocols, bp->name, bp->Bprotocols);
		return -EBUSY;
	}
	write_lock_irqsave(&bp_lock, flags);
	list_add_tail(&bp->list, &Bprotocols);
	write_unlock_irqrestore(&bp_lock, flags);
	return 0;
}
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karsten keil karsten keil 111 100.00% 1 100.00%
Total 111 100.00% 1 100.00%


EXPORT_SYMBOL(mISDN_register_Bprotocol);


void

mISDN_unregister_Bprotocol(struct Bprotocol *bp)
{
	u_long	flags;

	if (debug & DEBUG_CORE)
		printk(KERN_DEBUG "%s: %s/%x\n", __func__, bp->name,
		       bp->Bprotocols);
	write_lock_irqsave(&bp_lock, flags);
	list_del(&bp->list);
	write_unlock_irqrestore(&bp_lock, flags);
}
Contributors
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karsten keil karsten keil 59 100.00% 1 100.00%
Total 59 100.00% 1 100.00%


EXPORT_SYMBOL(mISDN_unregister_Bprotocol);


static const char *msg_no_channel = "<no channel>";

static const char *msg_no_stack = "<no stack>";

static const char *msg_no_stackdev = "<no stack device>";



const char *mISDNDevName4ch(struct mISDNchannel *ch)
{
	if (!ch)
		return msg_no_channel;
	if (!ch->st)
		return msg_no_stack;
	if (!ch->st->dev)
		return msg_no_stackdev;
	return dev_name(&ch->st->dev->dev);
}Contributors
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karsten keil karsten keil 55 100.00% 1 100.00%
Total 55 100.00% 1 100.00%

;

EXPORT_SYMBOL(mISDNDevName4ch);


static int

mISDNInit(void)
{
	int	err;

	printk(KERN_INFO "Modular ISDN core version %d.%d.%d\n",
	       MISDN_MAJOR_VERSION, MISDN_MINOR_VERSION, MISDN_RELEASE);
	mISDN_init_clock(&debug);
	mISDN_initstack(&debug);
	err = class_register(&mISDN_class);
	if (err)
		goto error1;
	err = mISDN_inittimer(&debug);
	if (err)
		goto error2;
	err = l1_init(&debug);
	if (err)
		goto error3;
	err = Isdnl2_Init(&debug);
	if (err)
		goto error4;
	err = misdn_sock_init(&debug);
	if (err)
		goto error5;
	return 0;

error5:
	Isdnl2_cleanup();
error4:
	l1_cleanup();
error3:
	mISDN_timer_cleanup();
error2:
	class_unregister(&mISDN_class);
error1:
	return err;
}

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karsten keil karsten keil 93 65.96% 1 25.00%
matthias urlichs matthias urlichs 41 29.08% 1 25.00%
andreas eversberg andreas eversberg 6 4.26% 1 25.00%
hannes eder hannes eder 1 0.71% 1 25.00%
Total 141 100.00% 4 100.00%



static void mISDN_cleanup(void)
{
	misdn_sock_cleanup();
	Isdnl2_cleanup();
	l1_cleanup();
	mISDN_timer_cleanup();
	class_unregister(&mISDN_class);

	printk(KERN_DEBUG "mISDNcore unloaded\n");
}

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karsten keil karsten keil 27 84.38% 1 33.33%
matthias urlichs matthias urlichs 4 12.50% 1 33.33%
hannes eder hannes eder 1 3.12% 1 33.33%
Total 32 100.00% 3 100.00%


module_init(mISDNInit);

module_exit(mISDN_cleanup);
Overall Contributors
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karsten keil karsten keil 881 50.87% 2 20.00%
matthias urlichs matthias urlichs 738 42.61% 2 20.00%
greg kroah-hartman greg kroah-hartman 90 5.20% 1 10.00%
roel kluin roel kluin 9 0.52% 1 10.00%
andreas eversberg andreas eversberg 6 0.35% 1 10.00%
tejun heo tejun heo 3 0.17% 1 10.00%
hannes eder hannes eder 3 0.17% 1 10.00%
michal miroslaw michal miroslaw 2 0.12% 1 10.00%
Total 1732 100.00% 10 100.00%
  Directory: drivers/isdn/mISDN

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
matthias urlichs	matthias urlichs	10	83.33%	1	50.00%
karsten keil	karsten keil	2	16.67%	1	50.00%
	Total	12	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/isdn/mISDN/core.c

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