diff options
Diffstat (limited to 'drivers/staging/dgrp/dgrp_common.h')
| -rw-r--r-- | drivers/staging/dgrp/dgrp_common.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/drivers/staging/dgrp/dgrp_common.h b/drivers/staging/dgrp/dgrp_common.h new file mode 100644 index 00000000..23aba6c4 --- /dev/null +++ b/drivers/staging/dgrp/dgrp_common.h @@ -0,0 +1,150 @@ +/* + * + * Copyright 1999 Digi International (www.digi.com) + * James Puzzo <jamesp at digi dot com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the + * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + * + */ + +#ifndef __DGRP_COMMON_H +#define __DGRP_COMMON_H + +#define DIGI_VERSION "1.9-29" + +#include <linux/fs.h> +#include <linux/timer.h> +#include "drp.h" + +#define DGRP_TTIME 100 +#define DGRP_RTIME 100 + +/************************************************************************ + * All global storage allocation. + ************************************************************************/ + +extern int dgrp_register_cudevices; /* enable legacy cu devices */ +extern int dgrp_register_prdevices; /* enable transparent print devices */ +extern int dgrp_poll_tick; /* Poll interval - in ms */ + +extern struct list_head nd_struct_list; + +struct dgrp_poll_data { + spinlock_t poll_lock; + struct timer_list timer; + int poll_tick; + ulong poll_round; /* Timer rouding factor */ + long node_active_count; +}; + +extern struct dgrp_poll_data dgrp_poll_data; +extern void dgrp_poll_handler(unsigned long arg); + +/* from dgrp_mon_ops.c */ +extern const struct file_operations dgrp_mon_ops; + +/* from dgrp_tty.c */ +extern int dgrp_tty_init(struct nd_struct *nd); +extern void dgrp_tty_uninit(struct nd_struct *nd); + +/* from dgrp_ports_ops.c */ +extern const struct file_operations dgrp_ports_ops; + +/* from dgrp_net_ops.c */ +extern const struct file_operations dgrp_net_ops; + +/* from dgrp_dpa_ops.c */ +extern const struct file_operations dgrp_dpa_ops; +extern void dgrp_dpa_data(struct nd_struct *, int, u8 *, int); + +/* from dgrp_sysfs.c */ +extern int dgrp_create_class_sysfs_files(void); +extern void dgrp_remove_class_sysfs_files(void); + +extern void dgrp_create_node_class_sysfs_files(struct nd_struct *nd); +extern void dgrp_remove_node_class_sysfs_files(struct nd_struct *nd); + +extern void dgrp_create_tty_sysfs(struct un_struct *un, struct device *c); +extern void dgrp_remove_tty_sysfs(struct device *c); + +/* from dgrp_specproc.c */ +extern void dgrp_unregister_proc(void); +extern void dgrp_register_proc(void); + +/*-----------------------------------------------------------------------* + * + * Declarations for common operations: + * + * (either used by more than one of net, mon, or tty, + * or in interrupt context (i.e. the poller)) + * + *-----------------------------------------------------------------------*/ + +void dgrp_carrier(struct ch_struct *ch); + + +/* + * ID manipulation macros (where c1 & c2 are characters, i is + * a long integer, and s is a character array of at least three members + */ + +static inline void ID_TO_CHAR(long i, char *s) +{ + s[0] = ((i & 0xff00)>>8); + s[1] = (i & 0xff); + s[2] = 0; +} + +static inline long CHAR_TO_ID(char *s) +{ + return ((s[0] & 0xff) << 8) | (s[1] & 0xff); +} + +static inline struct nd_struct *nd_struct_get(long major) +{ + struct nd_struct *nd; + + list_for_each_entry(nd, &nd_struct_list, list) { + if (major == nd->nd_major) + return nd; + } + + return NULL; +} + +static inline int nd_struct_add(struct nd_struct *entry) +{ + struct nd_struct *ptr; + + ptr = nd_struct_get(entry->nd_major); + + if (ptr) + return -EBUSY; + + list_add_tail(&entry->list, &nd_struct_list); + + return 0; +} + +static inline int nd_struct_del(struct nd_struct *entry) +{ + struct nd_struct *nd; + + nd = nd_struct_get(entry->nd_major); + + if (!nd) + return -ENODEV; + + list_del(&nd->list); + return 0; +} + +#endif /* __DGRP_COMMON_H */ |