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#ifndef XPD_H
#define XPD_H
/*
* Written by Oron Peled <oron@actcom.co.il>
* Copyright (C) 2004-2005, 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 <asm/atomic.h>
#include <asm/semaphore.h>
#include <linux/moduleparam.h>
#endif
#include <zaptel.h>
#ifdef __KERNEL__
#define DEF_PARM(type,name,init,desc) \
type name = init; \
module_param(name, type, 0600); \
MODULE_PARM_DESC(name, desc)
#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, 0600); \
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, 0600); \
MODULE_PARM_DESC(name, desc " ( 1-" __MODULE_STRING(count) ")")
#endif
#endif // __KERNEL__
#define MAX_SPANNAME 20
#define MAX_SPANDESC 40
#define MAX_CHANNAME 20
#define XPD_NAMELEN 10 /* must be <= from maximal workqueue name */
#define XPD_DESCLEN 20
#define XBUS_NAMELEN 20 /* must be <= from maximal workqueue name */
#define XBUS_DESCLEN 40
/* Hardware does not check bank_num yet. So only 4 cards can be used */
#define MAX_XPDS 4 // 1 FXS + 2 E1/T1 + 1 (Quad * E1/T1)
#define VALID_XPD_NUM(x) ((x) < MAX_XPDS && (x) >= 0)
typedef struct xbus_ops xbus_ops_t;
typedef enum xbus_type {
FIRMWARE_LOOPBACK = 1,
FIRMWARE_XPP = 2,
} xbus_type_t;
#ifdef __KERNEL__
typedef struct packet_queue {
char qname[XPD_NAMELEN];
struct list_head head;
unsigned int count;
unsigned int worst_count;
unsigned int overflows;
spinlock_t lock;
} packet_queue_t;
struct xbus_ops {
int (*packet_send)(xbus_t *xbus, xpacket_t *packet);
xpacket_t *(*packet_new)(xbus_t *xbus, int flags);
void (*packet_free)(xbus_t *xbus, xpacket_t *p);
};
enum {
XBUS_N_DESC_REQ,
XBUS_N_DEV_DESC,
XBUS_N_PCM_WRITE,
XBUS_N_PCM_READ,
XBUS_N_TX_BYTES,
XBUS_N_RX_BYTES,
XBUS_N_SOFTSIM_PACKETS,
XBUS_N_SIM_PACKETS,
};
#define XBUS_COUNTER(xbus, counter) ((xbus)->counters[XBUS_N_ ## counter])
#define C_(x) [ XBUS_N_ ## x ] = { #x }
/* yucky, make an instance so we can size it... */
static struct xbus_counters {
char *name;
} xbus_counters[] = {
C_(DESC_REQ),
C_(DEV_DESC),
C_(PCM_WRITE),
C_(PCM_READ),
C_(TX_BYTES),
C_(RX_BYTES),
C_(SOFTSIM_PACKETS),
C_(SIM_PACKETS),
};
#undef C_
#define XBUS_COUNTER_MAX ARRAY_SIZE(xbus_counters)
struct xpd_sim {
bool simulated;
bool softloop_xpd;
int loopto;
xpd_type_t xpd_type;
xpp_line_t hookstate;
};
struct xbus {
char busname[XBUS_NAMELEN]; /* only xbus_new set this */
char busdesc[XBUS_DESCLEN]; /* lowlevel drivers set this */
int num;
xbus_ops_t *ops;
struct xpd *xpds[MAX_XPDS];
/* Simulator data */
xbus_type_t bus_type;
#if SOFT_SIMULATOR
struct xpd_sim sim[MAX_XPDS];
struct workqueue_struct *sim_workqueue;
struct work_struct sim_work; // workqueue job for running simulator
packet_queue_t sim_packet_queue;
#endif
spinlock_t lock;
bool hardware_exists; /* Hardware is functional */
int open_counter; /* Number of open channels */
atomic_t packet_counter; /* Allocated packets */
wait_queue_head_t packet_cache_empty;
struct timer_list poll_timer;
struct rw_semaphore in_use;
int num_xpds;
void *priv; /* Pointer to transport level data structures */
#ifdef XPP_PACKET_LOG
struct cyclic_buff *packet_log;
#endif
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_xbus_dir;
struct proc_dir_entry *proc_xbus_summary;
#endif
/* statistics */
int counters[XBUS_COUNTER_MAX];
};
#endif
typedef enum xpd_direction {
TO_PHONE = 0,
TO_PSTN = 1,
} xpd_direction_t;
#define LINE_BITS (sizeof(xpp_line_t)*8)
#ifdef __KERNEL__
#define BIT_SET(x,i) ((x) |= (1 << (i)))
#define BIT_CLR(x,i) ((x) &= ~(1 << (i)))
#define IS_SET(x,i) (((x) & (1 << (i))) != 0)
#define BIT(i) (1 << (i))
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 leds {
LED_GREEN,
LED_RED,
LED_BLUE,
};
#define NUM_LEDS 3
struct xpd {
char xpdname[XPD_NAMELEN];
struct zt_span span;
struct zt_chan *chans;
int channels;
xpd_type_t type;
xpd_direction_t direction; /* TO_PHONE, TO_PSTN */
xpp_line_t enabled_chans; /* hardware activation: 0 - off, 1 - on */
xpp_line_t hookstate; /* 0 - ONHOOK, 1 - OFHOOK */
xpp_line_t ledstate[NUM_LEDS]; /* 0 - OFF, 1 - ON */
xpp_line_t digital_outputs; /* 0 - no, 1 - yes */
xpp_line_t digital_inputs; /* 0 - no, 1 - yes */
int ringing[CHANNELS_PERXPD];
bool ringer_on[CHANNELS_PERXPD]; /* For ring toggling */
bool led_on[CHANNELS_PERXPD]; /* For led toggling */
int lasttxhook[CHANNELS_PERXPD];
struct work_struct xpd_post_init;
xbus_t *xbus;
spinlock_t lock;
atomic_t open_counter; /* Number of open channels */
int flags;
unsigned int board_flags;
#define XPD_BOARD_LOOPBACK 1
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_xpd_dir;
struct proc_dir_entry *proc_xpd_summary;
struct proc_dir_entry *proc_xpd_ztregister;
#endif
// Bit numbers of board_flags
int counters[XPD_COUNTER_MAX];
const xops_t *xops; /* Card level operations */
void *priv; /* Card level private data */
atomic_t card_present;
unsigned int recv_errors;
unsigned int seq_errors;
unsigned long last_response; /* in jiffies */
unsigned id;
struct list_head xpd_list;
unsigned int timer_count;
volatile u_char *writechunk; /* Double-word aligned write memory */
volatile u_char *readchunk; /* Double-word aligned read memory */
/* Echo cancelation */
u_char ec_chunk1[CHANNELS_PERXPD][ZT_CHUNKSIZE];
u_char ec_chunk2[CHANNELS_PERXPD][ZT_CHUNKSIZE];
};
#endif
#endif /* XPD_H */
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