X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fisdn%2Fhardware%2Feicon%2Fdivamnt.c;h=989cdef607764073337099fbcfa4b4718ca71883;hb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;hp=6b22a8a5f307a819de5f85c440eeffec37fc7337;hpb=a2c21200f1c81b08cb55e417b68150bba439b646;p=linux-2.6.git diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c index 6b22a8a5f..989cdef60 100644 --- a/drivers/isdn/hardware/eicon/divamnt.c +++ b/drivers/isdn/hardware/eicon/divamnt.c @@ -1,4 +1,4 @@ -/* $Id: divamnt.c,v 1.32 2004/01/15 09:48:13 armin Exp $ +/* $Id: divamnt.c,v 1.32.6.5 2004/08/28 20:03:53 armin Exp $ * * Driver for Eicon DIVA Server ISDN cards. * Maint module @@ -17,8 +17,6 @@ #include #include #include -#include -#include #include #include "platform.h" @@ -26,7 +24,7 @@ #include "divasync.h" #include "debug_if.h" -static char *main_revision = "$Revision: 1.32 $"; +static char *main_revision = "$Revision: 1.32.6.5 $"; static int major; @@ -47,8 +45,7 @@ static char *DEVNAME = "DivasMAINT"; char *DRIVERRELEASE_MNT = "2.0"; static wait_queue_head_t msgwaitq; -static DECLARE_MUTEX(opened_sem); -static int opened; +static unsigned long opened; static struct timeval start_time; extern int mntfunc_init(int *, void **, unsigned long); @@ -73,20 +70,6 @@ static char *getrev(const char *revision) return rev; } -/* - * buffer alloc - */ -void *diva_os_malloc_tbuffer(unsigned long flags, unsigned long size) -{ - return (kmalloc(size, GFP_KERNEL)); -} -void diva_os_free_tbuffer(unsigned long flags, void *ptr) -{ - if (ptr) { - kfree(ptr); - } -} - /* * kernel/user space copy functions */ @@ -131,154 +114,8 @@ void diva_os_get_time(dword * sec, dword * usec) } /* - * /proc entries + * device node operations */ - -extern struct proc_dir_entry *proc_net_eicon; -static struct proc_dir_entry *maint_proc_entry = NULL; - -/* - Read function is provided for compatibility reason - this allows - to read unstructured traces, formated as ascii string only - */ -static ssize_t -maint_read(struct file *file, char __user *buf, size_t count, loff_t * off) -{ - diva_dbg_entry_head_t *pmsg = NULL; - diva_os_spin_lock_magic_t old_irql; - word size; - char *pstr, *dli_label = "UNK"; - int str_length; - int *str_msg; - - if (!file->private_data) { - for (;;) { - while ( - (pmsg = - diva_maint_get_message(&size, - &old_irql))) { - if (!(pmsg->facility == MSG_TYPE_STRING)) { - diva_maint_ack_message(1, - &old_irql); - } else { - break; - } - } - - if (!pmsg) { - if (file->f_flags & O_NONBLOCK) { - return (-EAGAIN); - } - interruptible_sleep_on(&msgwaitq); - if (signal_pending(current)) { - return (-ERESTARTSYS); - } - } else { - break; - } - } - /* - The length of message that shoule be read is: - pmsg->data_length + label(25) + DrvID(2) + byte CR + trailing zero - */ - if (! - (str_msg = - (int *) diva_os_malloc_tbuffer(0, - pmsg->data_length + - 29 + 2 * sizeof(int)))) { - diva_maint_ack_message(0, &old_irql); - return (-ENOMEM); - } - pstr = (char *) &str_msg[2]; - - switch (pmsg->dli) { - case DLI_LOG: - dli_label = "LOG"; - break; - case DLI_FTL: - dli_label = "FTL"; - break; - case DLI_ERR: - dli_label = "ERR"; - break; - case DLI_TRC: - dli_label = "TRC"; - break; - case DLI_REG: - dli_label = "REG"; - break; - case DLI_MEM: - dli_label = "MEM"; - break; - case DLI_SPL: - dli_label = "SPL"; - break; - case DLI_IRP: - dli_label = "IRP"; - break; - case DLI_TIM: - dli_label = "TIM"; - break; - case DLI_TAPI: - dli_label = "TAPI"; - break; - case DLI_NDIS: - dli_label = "NDIS"; - break; - case DLI_CONN: - dli_label = "CONN"; - break; - case DLI_STAT: - dli_label = "STAT"; - break; - case DLI_PRV0: - dli_label = "PRV0"; - break; - case DLI_PRV1: - dli_label = "PRV1"; - break; - case DLI_PRV2: - dli_label = "PRV2"; - break; - case DLI_PRV3: - dli_label = "PRV3"; - break; - } - str_length = sprintf(pstr, "%s %02x %s\n", - dli_label, (byte) pmsg->drv_id, - (char *) &pmsg[1]); - str_msg[0] = str_length; - str_msg[1] = 0; - file->private_data = str_msg; - diva_maint_ack_message(1, &old_irql); - } else { - str_msg = (int *) file->private_data; - pstr = (char *) &str_msg[2]; - pstr += str_msg[1]; /* head + offset */ - str_length = str_msg[0] - str_msg[1]; /* length - offset */ - } - str_length = MIN(str_length, count); - - if (diva_os_copy_to_user(NULL, buf, pstr, str_length)) { - diva_os_free_tbuffer(0, str_msg); - file->private_data = NULL; - return (-EFAULT); - } - str_msg[1] += str_length; - if ((str_msg[0] - str_msg[1]) <= 0) { - diva_os_free_tbuffer(0, str_msg); - file->private_data = NULL; - } - - return (str_length); -} - -static ssize_t -maint_write(struct file *file, const char __user *buf, size_t count, loff_t * off) -{ - return (-ENODEV); -} - static unsigned int maint_poll(struct file *file, poll_table * wait) { unsigned int mask = 0; @@ -293,13 +130,10 @@ static unsigned int maint_poll(struct file *file, poll_table * wait) static int maint_open(struct inode *ino, struct file *filep) { - down(&opened_sem); - if (opened) { - up(&opened_sem); + /* only one open is allowed, so we test + it atomically */ + if (test_and_set_bit(0, &opened)) return (-EBUSY); - } - opened++; - up(&opened_sem); filep->private_data = NULL; @@ -309,54 +143,16 @@ static int maint_open(struct inode *ino, struct file *filep) static int maint_close(struct inode *ino, struct file *filep) { if (filep->private_data) { - diva_os_free_tbuffer(0, filep->private_data); + diva_os_free(0, filep->private_data); filep->private_data = NULL; } - down(&opened_sem); - opened--; - up(&opened_sem); + /* clear 'used' flag */ + clear_bit(0, &opened); + return (0); } -/* - * fops - */ -static struct file_operations maint_fops = { - .owner = THIS_MODULE, - .llseek = no_llseek, - .read = maint_read, - .write = maint_write, - .poll = maint_poll, - .open = maint_open, - .release = maint_close -}; - -static int DIVA_INIT_FUNCTION create_maint_proc(void) -{ - maint_proc_entry = - create_proc_entry("maint", S_IFREG | S_IRUGO | S_IWUSR, - proc_net_eicon); - if (!maint_proc_entry) - return (0); - - maint_proc_entry->proc_fops = &maint_fops; - maint_proc_entry->owner = THIS_MODULE; - - return (1); -} - -static void remove_maint_proc(void) -{ - if (maint_proc_entry) { - remove_proc_entry("maint", proc_net_eicon); - maint_proc_entry = NULL; - } -} - -/* - * device node operations - */ static ssize_t divas_maint_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) { @@ -427,18 +223,10 @@ static int DIVA_INIT_FUNCTION maint_init(void) ret = -EIO; goto out; } - if (!create_maint_proc()) { - printk(KERN_ERR "%s: failed to create proc entry.\n", - DRIVERLNAME); - divas_maint_unregister_chrdev(); - ret = -EIO; - goto out; - } if (!(mntfunc_init(&buffer_length, &buffer, diva_dbg_mem))) { printk(KERN_ERR "%s: failed to connect to DIDD.\n", DRIVERLNAME); - remove_maint_proc(); divas_maint_unregister_chrdev(); ret = -EIO; goto out; @@ -457,7 +245,6 @@ static int DIVA_INIT_FUNCTION maint_init(void) */ static void DIVA_EXIT_FUNCTION maint_exit(void) { - remove_maint_proc(); divas_maint_unregister_chrdev(); mntfunc_finit(); @@ -466,3 +253,4 @@ static void DIVA_EXIT_FUNCTION maint_exit(void) module_init(maint_init); module_exit(maint_exit); +