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authorMatthias Urlichs <smurf@smurf.noris.de>2008-08-16 00:09:24 +0200
committerKarsten Keil <kkeil@suse.de>2009-01-09 22:44:28 +0100
commitb36b654a7e82308cea063cdf909a7f246105c2a3 (patch)
tree8c6fd2651a307a1b67549801796e2fdf8bc7991e
parent808a14a1583ca3790bf0a9c20c7d4cbac212c775 (diff)
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mISDN: Create /sys/class/mISDN
Create /sys/class/mISDN and implement functions to handle device renames. Signed-Off-By: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
-rw-r--r--drivers/isdn/hardware/mISDN/hfcmulti.c6
-rw-r--r--drivers/isdn/hardware/mISDN/hfcpci.c100
-rw-r--r--drivers/isdn/mISDN/core.c271
-rw-r--r--drivers/isdn/mISDN/l1oip_core.c3
-rw-r--r--include/linux/mISDNif.h8
5 files changed, 273 insertions, 115 deletions
diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index cd3f3994b7f..97f4708b387 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c
@@ -4718,7 +4718,7 @@ init_e1_port(struct hfc_multi *hc, struct hm_map *m)
} else
hc->chan[hc->dslot].jitter = 2; /* default */
snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-e1.%d", HFC_cnt + 1);
- ret = mISDN_register_device(&dch->dev, name);
+ ret = mISDN_register_device(&dch->dev, &hc->pci_dev->dev, name);
if (ret)
goto free_chan;
hc->created[0] = 1;
@@ -4826,9 +4826,9 @@ init_multi_port(struct hfc_multi *hc, int pt)
test_and_set_bit(HFC_CFG_DIS_ECHANNEL,
&hc->chan[i + 2].cfg);
}
- snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-%ds.%d/%d",
+ snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-%ds.%d-%d",
hc->type, HFC_cnt + 1, pt + 1);
- ret = mISDN_register_device(&dch->dev, name);
+ ret = mISDN_register_device(&dch->dev, &hc->pci_dev->dev, name);
if (ret)
goto free_chan;
hc->created[pt] = 1;
diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index cd5d26c9909..8df12bf02af 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -64,9 +64,6 @@ MODULE_LICENSE("GPL");
module_param(debug, uint, 0);
module_param(poll, uint, S_IRUGO | S_IWUSR);
-static LIST_HEAD(HFClist);
-static DEFINE_RWLOCK(HFClock);
-
enum {
HFC_CCD_2BD0,
HFC_CCD_B000,
@@ -136,7 +133,6 @@ struct hfcPCI_hw {
struct hfc_pci {
- struct list_head list;
u_char subtype;
u_char chanlimit;
u_char initdone;
@@ -1227,41 +1223,6 @@ hfcpci_int(int intno, void *dev_id)
return IRQ_HANDLED;
}
-static void
-hfcpci_softirq(void *arg)
-{
- u_long flags;
- struct bchannel *bch;
- struct hfc_pci *hc;
-
- write_lock_irqsave(&HFClock, flags);
- list_for_each_entry(hc, &HFClist, list) {
- if (hc->hw.int_m2 & HFCPCI_IRQ_ENABLE) {
- spin_lock(&hc->lock);
- bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
- if (bch && bch->state == ISDN_P_B_RAW) { /* B1 rx&tx */
- main_rec_hfcpci(bch);
- tx_birq(bch);
- }
- bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2);
- if (bch && bch->state == ISDN_P_B_RAW) { /* B2 rx&tx */
- main_rec_hfcpci(bch);
- tx_birq(bch);
- }
- spin_unlock(&hc->lock);
- }
- }
- write_unlock_irqrestore(&HFClock, flags);
-
- /* if next event would be in the past ... */
- if ((s32)(hfc_jiffies + tics - jiffies) <= 0)
- hfc_jiffies = jiffies + 1;
- else
- hfc_jiffies += tics;
- hfc_tl.expires = hfc_jiffies;
- add_timer(&hfc_tl);
-}
-
/*
* timer callback for D-chan busy resolution. Currently no function
*/
@@ -2131,7 +2092,6 @@ release_card(struct hfc_pci *hc) {
mISDN_freebchannel(&hc->bch[1]);
mISDN_freebchannel(&hc->bch[0]);
mISDN_freedchannel(&hc->dch);
- list_del(&hc->list);
pci_set_drvdata(hc->pdev, NULL);
kfree(hc);
}
@@ -2141,7 +2101,6 @@ setup_card(struct hfc_pci *card)
{
int err = -EINVAL;
u_int i;
- u_long flags;
char name[MISDN_MAX_IDLEN];
card->dch.debug = debug;
@@ -2169,13 +2128,10 @@ setup_card(struct hfc_pci *card)
if (err)
goto error;
snprintf(name, MISDN_MAX_IDLEN - 1, "hfc-pci.%d", HFC_cnt + 1);
- err = mISDN_register_device(&card->dch.dev, name);
+ err = mISDN_register_device(&card->dch.dev, &card->pdev->dev, name);
if (err)
goto error;
HFC_cnt++;
- write_lock_irqsave(&HFClock, flags);
- list_add_tail(&card->list, &HFClist);
- write_unlock_irqrestore(&HFClock, flags);
printk(KERN_INFO "HFC %d cards installed\n", HFC_cnt);
return 0;
error:
@@ -2311,15 +2267,12 @@ static void __devexit
hfc_remove_pci(struct pci_dev *pdev)
{
struct hfc_pci *card = pci_get_drvdata(pdev);
- u_long flags;
- if (card) {
- write_lock_irqsave(&HFClock, flags);
+ if (card)
release_card(card);
- write_unlock_irqrestore(&HFClock, flags);
- } else
+ else
if (debug)
- printk(KERN_WARNING "%s: drvdata allready removed\n",
+ printk(KERN_WARNING "%s: drvdata already removed\n",
__func__);
}
@@ -2331,6 +2284,46 @@ static struct pci_driver hfc_driver = {
.id_table = hfc_ids,
};
+static int
+_hfcpci_softirq(struct device *dev, void *arg)
+{
+ struct hfc_pci *hc = dev_get_drvdata(dev);
+ struct bchannel *bch;
+ if (hc == NULL)
+ return 0;
+
+ if (hc->hw.int_m2 & HFCPCI_IRQ_ENABLE) {
+ spin_lock(&hc->lock);
+ bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
+ if (bch && bch->state == ISDN_P_B_RAW) { /* B1 rx&tx */
+ main_rec_hfcpci(bch);
+ tx_birq(bch);
+ }
+ bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2);
+ if (bch && bch->state == ISDN_P_B_RAW) { /* B2 rx&tx */
+ main_rec_hfcpci(bch);
+ tx_birq(bch);
+ }
+ spin_unlock(&hc->lock);
+ }
+ return 0;
+}
+
+static void
+hfcpci_softirq(void *arg)
+{
+ (void) driver_for_each_device(&hfc_driver.driver, NULL, arg,
+ _hfcpci_softirq);
+
+ /* if next event would be in the past ... */
+ if ((s32)(hfc_jiffies + tics - jiffies) <= 0)
+ hfc_jiffies = jiffies + 1;
+ else
+ hfc_jiffies += tics;
+ hfc_tl.expires = hfc_jiffies;
+ add_timer(&hfc_tl);
+}
+
static int __init
HFC_init(void)
{
@@ -2375,14 +2368,9 @@ HFC_init(void)
static void __exit
HFC_cleanup(void)
{
- struct hfc_pci *card, *next;
-
if (timer_pending(&hfc_tl))
del_timer(&hfc_tl);
- list_for_each_entry_safe(card, next, &HFClist, list) {
- release_card(card);
- }
pci_unregister_driver(&hfc_driver);
}
diff --git a/drivers/isdn/mISDN/core.c b/drivers/isdn/mISDN/core.c
index 9116f54def2..9426c9827e4 100644
--- a/drivers/isdn/mISDN/core.c
+++ b/drivers/isdn/mISDN/core.c
@@ -25,39 +25,183 @@ MODULE_AUTHOR("Karsten Keil");
MODULE_LICENSE("GPL");
module_param(debug, uint, S_IRUGO | S_IWUSR);
-static LIST_HEAD(devices);
-static DEFINE_RWLOCK(device_lock);
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 */
+}
+
+static ssize_t _show_id(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);
+}
+
+static ssize_t _show_nrbchan(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);
+}
+
+static ssize_t _show_d_protocols(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);
+}
+
+static ssize_t _show_b_protocols(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());
+}
+
+static ssize_t _show_protocol(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);
+}
+
+static ssize_t _show_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ strcpy(buf, dev_name(dev));
+ return strlen(buf);
+}
+
+#if 0 /* hangs */
+static ssize_t _set_name(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;
+}
+#endif
+
+static ssize_t _show_channelmap(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;
+}
+
+static struct device_attribute mISDN_dev_attrs[] = {
+ __ATTR(id, S_IRUGO, _show_id, NULL),
+ __ATTR(d_protocols, S_IRUGO, _show_d_protocols, NULL),
+ __ATTR(b_protocols, S_IRUGO, _show_b_protocols, NULL),
+ __ATTR(protocol, S_IRUGO, _show_protocol, NULL),
+ __ATTR(channelmap, S_IRUGO, _show_channelmap, NULL),
+ __ATTR(nrbchan, S_IRUGO, _show_nrbchan, NULL),
+ __ATTR(name, S_IRUGO, _show_name, NULL),
+/* __ATTR(name, S_IRUGO|S_IWUSR, _show_name, _set_name), */
+ {}
+};
+
+#ifdef CONFIG_HOTPLUG
+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;
+}
+#endif
+
+static void mISDN_class_release(struct class *cls)
+{
+ /* do nothing, it's static */
+}
+
+static struct class mISDN_class = {
+ .name = "mISDN",
+ .owner = THIS_MODULE,
+#ifdef CONFIG_HOTPLUG
+ .dev_uevent = mISDN_uevent,
+#endif
+ .dev_attrs = mISDN_dev_attrs,
+ .dev_release = mISDN_dev_release,
+ .class_release = mISDN_class_release,
+};
+
+static int
+_get_mdevice(struct device *dev, void *id)
+{
+ struct mISDNdevice *mdev = dev_to_mISDN(dev);
+
+ if (!mdev)
+ return 0;
+ if (mdev->id != *(u_int *)id)
+ return 0;
+ return 1;
+}
+
struct mISDNdevice
*get_mdevice(u_int id)
{
- struct mISDNdevice *dev;
+ return dev_to_mISDN(class_find_device(&mISDN_class, NULL, &id,
+ _get_mdevice));
+}
- read_lock(&device_lock);
- list_for_each_entry(dev, &devices, D.list)
- if (dev->id == id) {
- read_unlock(&device_lock);
- return dev;
- }
- read_unlock(&device_lock);
- return NULL;
+static int
+_get_mdevice_count(struct device *dev, void *cnt)
+{
+ *(int *)cnt += 1;
+ return 0;
}
int
get_mdevice_count(void)
{
- struct mISDNdevice *dev;
- int cnt = 0;
+ int cnt = 0;
- read_lock(&device_lock);
- list_for_each_entry(dev, &devices, D.list)
- cnt++;
- read_unlock(&device_lock);
+ class_for_each_device(&mISDN_class, NULL, &cnt, _get_mdevice_count);
return cnt;
}
@@ -68,19 +212,24 @@ get_free_devid(void)
for (i = 0; i <= MAX_DEVICE_ID; i++)
if (!test_and_set_bit(i, (u_long *)&device_ids))
- return i;
- return -1;
+ break;
+ if (i > MAX_DEVICE_ID)
+ return -1;
+ return i;
}
int
-mISDN_register_device(struct mISDNdevice *dev, char *name)
+mISDN_register_device(struct mISDNdevice *dev,
+ struct device *parent, char *name)
{
- u_long flags;
int err;
dev->id = get_free_devid();
+ err = -EBUSY;
if (dev->id < 0)
- return -EBUSY;
+ goto error1;
+
+ device_initialize(&dev->dev);
if (name && name[0])
dev_set_name(&dev->dev, "%s", name);
else
@@ -90,26 +239,39 @@ mISDN_register_device(struct mISDNdevice *dev, char *name)
dev_name(&dev->dev), dev->id);
err = create_stack(dev);
if (err)
- return err;
- write_lock_irqsave(&device_lock, flags);
- list_add_tail(&dev->D.list, &devices);
- write_unlock_irqrestore(&device_lock, flags);
+ 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;
+
}
EXPORT_SYMBOL(mISDN_register_device);
void
mISDN_unregister_device(struct mISDNdevice *dev) {
- u_long flags;
-
if (debug & DEBUG_CORE)
printk(KERN_DEBUG "mISDN_unregister %s %d\n",
dev_name(&dev->dev), dev->id);
- write_lock_irqsave(&device_lock, flags);
- list_del(&dev->D.list);
- write_unlock_irqrestore(&device_lock, flags);
+ /* 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);
}
EXPORT_SYMBOL(mISDN_unregister_device);
@@ -201,42 +363,43 @@ mISDNInit(void)
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 error;
+ goto error2;
err = l1_init(&debug);
- if (err) {
- mISDN_timer_cleanup();
- goto error;
- }
+ if (err)
+ goto error3;
err = Isdnl2_Init(&debug);
- if (err) {
- mISDN_timer_cleanup();
- l1_cleanup();
- goto error;
- }
+ if (err)
+ goto error4;
err = misdn_sock_init(&debug);
- if (err) {
- mISDN_timer_cleanup();
- l1_cleanup();
- Isdnl2_cleanup();
- }
-error:
+ if (err)
+ goto error5;
+ return 0;
+
+error5:
+ Isdnl2_cleanup();
+error4:
+ l1_cleanup();
+error3:
+ mISDN_timer_cleanup();
+error2:
+ class_unregister(&mISDN_class);
+error1:
return err;
}
static void mISDN_cleanup(void)
{
misdn_sock_cleanup();
- mISDN_timer_cleanup();
- l1_cleanup();
Isdnl2_cleanup();
+ l1_cleanup();
+ mISDN_timer_cleanup();
+ class_unregister(&mISDN_class);
- if (!list_empty(&devices))
- printk(KERN_ERR "%s devices still registered\n", __func__);
-
- if (!list_empty(&Bprotocols))
- printk(KERN_ERR "%s Bprotocols still registered\n", __func__);
printk(KERN_DEBUG "mISDNcore unloaded\n");
}
diff --git a/drivers/isdn/mISDN/l1oip_core.c b/drivers/isdn/mISDN/l1oip_core.c
index a6a9e1af2ad..abe57498957 100644
--- a/drivers/isdn/mISDN/l1oip_core.c
+++ b/drivers/isdn/mISDN/l1oip_core.c
@@ -1433,7 +1433,8 @@ init_card(struct l1oip *hc, int pri, int bundle)
hc->chan[i + ch].bch = bch;
set_channelmap(bch->nr, dch->dev.channelmap);
}
- ret = mISDN_register_device(&dch->dev, hc->name);
+ /* TODO: create a parent device for this driver */
+ ret = mISDN_register_device(&dch->dev, NULL, hc->name);
if (ret)
return ret;
hc->registered = 1;
diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 3f9988849f3..d4229aebf64 100644
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -531,7 +531,8 @@ _queue_data(struct mISDNchannel *ch, u_int prim,
/* global register/unregister functions */
-extern int mISDN_register_device(struct mISDNdevice *, char *name);
+extern int mISDN_register_device(struct mISDNdevice *,
+ struct device *parent, char *name);
extern void mISDN_unregister_device(struct mISDNdevice *);
extern int mISDN_register_Bprotocol(struct Bprotocol *);
extern void mISDN_unregister_Bprotocol(struct Bprotocol *);
@@ -539,6 +540,11 @@ extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *,
void *);
extern void mISDN_unregister_clock(struct mISDNclock *);
+static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
+{
+ return dev_get_drvdata(dev);
+}
+
extern void set_channel_address(struct mISDNchannel *, u_int, u_int);
extern void mISDN_clock_update(struct mISDNclock *, int, struct timeval *);
extern unsigned short mISDN_clock_get(void);