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#ifndef XPD_H
#define XPD_H
/*
* Written by Oron Peled <oron@actcom.co.il>
* Copyright (C) 2004-2006, Xorcom
*
* All rights reserved.
*
* 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 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "xdefs.h"
#include "xproto.h"
#ifdef __KERNEL__
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/version.h>
#include <asm/atomic.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
#include <linux/semaphore.h>
#else
#include <asm/semaphore.h>
#endif
#include <linux/moduleparam.h>
#endif /* __KERNEL__ */
#include <dahdi/kernel.h>
#ifdef __KERNEL__
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
/* also added in RHEL kernels with the OpenInfiniband backport: */
#if LINUX_VERSION_CODE != KERNEL_VERSION(2,6,9) || !defined(DEFINE_SPINLOCK)
typedef unsigned gfp_t; /* Added in 2.6.14 */
#endif
#endif
/*
* FIXME: Kludge for 2.6.19
* bool is now defined as a proper boolean type (gcc _Bool)
* but the command line parsing framework handles it as int.
*/
#define DEF_PARM_BOOL(name,init,perm,desc) \
int name = init; \
module_param(name, bool, perm); \
MODULE_PARM_DESC(name, desc " [default " #init "]")
#define DEF_PARM(type,name,init,perm,desc) \
type name = init; \
module_param(name, type, perm); \
MODULE_PARM_DESC(name, desc " [default " #init "]")
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,10)
/*
* Old 2.6 kernels had module_param_array() macro that receive the counter
* by value.
*/
#define DEF_ARRAY(type,name,count,init,desc) \
unsigned int name ## _num_values; \
type name[count] = { [0 ... ((count)-1)] = (init) }; \
module_param_array(name, type, name ## _num_values, 0644); \
MODULE_PARM_DESC(name, desc " ( 1-" __MODULE_STRING(count) ")")
#else
#define DEF_ARRAY(type,name,count,init,desc) \
unsigned int name ## _num_values; \
type name[count] = {[0 ... ((count)-1)] = init}; \
module_param_array(name, type, &name ## _num_values, 0644); \
MODULE_PARM_DESC(name, desc " ( 1-" __MODULE_STRING(count) ")")
#endif
#endif // __KERNEL__
#define CARD_DESC_MAGIC 0xca9dde5c
struct card_desc_struct {
struct list_head card_list;
u32 magic;
byte type; /* LSB: 1 - to_phone, 0 - to_line */
byte subtype;
struct xpd_addr xpd_addr;
byte numchips;
byte ports_per_chip;
byte ports;
byte port_dir;
struct xpd_addr ec_addr; /* echo canceler address */
};
typedef enum xpd_direction {
TO_PSTN = 0,
TO_PHONE = 1,
} xpd_direction_t;
#ifdef __KERNEL__
/*
* XPD statistics counters
*/
enum {
XPD_N_PCM_READ,
XPD_N_PCM_WRITE,
XPD_N_RECV_ERRORS,
};
#define XPD_COUNTER(xpd, counter) ((xpd)->counters[XPD_N_ ## counter])
#define C_(x) [ XPD_N_ ## x ] = { #x }
/* yucky, make an instance so we can size it... */
static struct xpd_counters {
char *name;
} xpd_counters[] = {
C_(PCM_READ),
C_(PCM_WRITE),
C_(RECV_ERRORS),
};
#undef C_
#define XPD_COUNTER_MAX (sizeof(xpd_counters)/sizeof(xpd_counters[0]))
enum xpd_state {
XPD_STATE_START,
XPD_STATE_INIT_REGS,
XPD_STATE_READY,
XPD_STATE_NOHW,
};
bool xpd_setstate(xpd_t *xpd, enum xpd_state newstate);
const char *xpd_statename(enum xpd_state st);
#define PHONEDEV(xpd) ((xpd)->phonedev)
#define IS_PHONEDEV(xpd) (PHONEDEV(xpd).phoneops)
struct phonedev {
const struct phoneops *phoneops; /* Card level operations */
struct dahdi_device *ddev;
struct dahdi_span span;
struct dahdi_chan *chans[32];
#define XPD_CHAN(xpd,chan) (PHONEDEV(xpd).chans[(chan)])
int channels;
xpd_direction_t direction; /* TO_PHONE, TO_PSTN */
xpp_line_t no_pcm; /* Temporary: disable PCM (for USB-1) */
xpp_line_t offhook_state; /* Actual chip state: 0 - ONHOOK, 1 - OFHOOK */
xpp_line_t oht_pcm_pass; /* Transfer on-hook PCM */
/* Voice Mail Waiting Indication: */
unsigned int msg_waiting[CHANNELS_PERXPD];
xpp_line_t digital_outputs; /* 0 - no, 1 - yes */
xpp_line_t digital_inputs; /* 0 - no, 1 - yes */
xpp_line_t digital_signalling; /* BRI signalling channels */
uint timing_priority; /* from 'span' directives in chan_dahdi.conf */
/* Assure atomicity of changes to pcm_len and wanted_pcm_mask */
spinlock_t lock_recompute_pcm;
/* maintained by card drivers */
uint pcm_len; /* allocation length of PCM packet (dynamic) */
xpp_line_t wanted_pcm_mask;
xpp_line_t silence_pcm; /* inject silence during next tick */
xpp_line_t mute_dtmf;
bool ringing[CHANNELS_PERXPD];
atomic_t dahdi_registered; /* Am I fully registered with dahdi */
atomic_t open_counter; /* Number of open channels */
/* Echo cancelation */
u_char ec_chunk1[CHANNELS_PERXPD][DAHDI_CHUNKSIZE];
u_char ec_chunk2[CHANNELS_PERXPD][DAHDI_CHUNKSIZE];
};
/*
* An XPD is a single Xorcom Protocol Device
*/
struct xpd {
char xpdname[XPD_NAMELEN];
struct phonedev phonedev;
const struct xops *xops;
xpd_type_t type;
const char *type_name;
byte subtype;
int subunits; /* all siblings */
enum xpd_state xpd_state;
struct device xpd_dev;
#define dev_to_xpd(dev) container_of(dev, struct xpd, xpd_dev)
struct kref kref;
#define kref_to_xpd(k) container_of(k, struct xpd, kref)
xbus_t *xbus; /* The XBUS we are connected to */
spinlock_t lock;
int flags;
unsigned long blink_mode; /* bitmask of blinking ports */
#define DEFAULT_LED_PERIOD (1000/8) /* in tick */
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_xpd_dir;
struct proc_dir_entry *proc_xpd_summary;
#endif
int counters[XPD_COUNTER_MAX];
const xproto_table_t *xproto; /* Card level protocol table */
void *priv; /* Card level private data */
bool card_present;
reg_cmd_t requested_reply;
reg_cmd_t last_reply;
unsigned long last_response; /* in jiffies */
unsigned xbus_idx; /* index in xbus->xpds[] */
struct xpd_addr addr;
struct list_head xpd_list;
unsigned int timer_count;
};
#define for_each_line(xpd,i) for((i) = 0; (i) < PHONEDEV(xpd).channels; (i)++)
#define IS_BRI(xpd) ((xpd)->type == XPD_TYPE_BRI)
#define TICK_TOLERANCE 500 /* usec */
#ifdef DEBUG_SYNC_PARPORT
void xbus_flip_bit(xbus_t *xbus, unsigned int bitnum0, unsigned int bitnum1);
#else
#define xbus_flip_bit(xbus, bitnum0, bitnum1)
#endif
static inline void *my_kzalloc(size_t size, gfp_t flags)
{
void *p;
p = kmalloc(size, flags);
if(p)
memset(p, 0, size);
return p;
}
struct xpd_driver {
xpd_type_t type;
struct device_driver driver;
#define driver_to_xpd_driver(driver) container_of(driver, struct xpd_driver, driver)
};
int xpd_driver_register(struct device_driver *driver);
void xpd_driver_unregister(struct device_driver *driver);
xpd_t *get_xpd(const char *msg, xpd_t *xpd);
void put_xpd(const char *msg, xpd_t *xpd);
int refcount_xpd(xpd_t *xpd);
#endif
#endif /* XPD_H */
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