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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 <asm/atomic.h>
#include <asm/semaphore.h>
#include <linux/moduleparam.h>
#endif
#include <zaptel.h>
#ifdef __KERNEL__
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
typedef unsigned gfp_t; /* Added in 2.6.14 */
#endif
#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__
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, gfp_t flags);
void (*packet_free)(xbus_t *xbus, xpacket_t *p);
};
/*
* XBUS statistics counters
*/
enum {
XBUS_N_DESC_REQ,
XBUS_N_DEV_DESC_FULL,
XBUS_N_DEV_DESC_EMPTY,
XBUS_N_PCM_WRITE,
XBUS_N_PCM_READ,
XBUS_N_TX_BYTES,
XBUS_N_RX_BYTES,
};
#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_FULL),
C_(DEV_DESC_EMPTY),
C_(PCM_WRITE),
C_(PCM_READ),
C_(TX_BYTES),
C_(RX_BYTES),
};
#undef C_
#define XBUS_COUNTER_MAX ARRAY_SIZE(xbus_counters)
#define CARD_DESC_MAGIC 0xca9dde5c
struct card_desc_struct {
struct list_head card_list;
u32 magic;
xbus_t *xbus;
byte rev; /* Revision number */
byte type; /* LSB: 1 - to_phone, 0 - to_line */
xpd_addr_t xpd_addr;
};
/*
* An xbus is a transport layer for Xorcom Protocol commands
*/
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];
int max_packet_size;
/* Device-Model */
struct device the_bus;
/* Simulator data */
xbus_type_t bus_type;
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;
/*
* Bus scanning
*/
atomic_t count_poll_answers;
struct list_head poll_results;
wait_queue_head_t wait_for_polls;
struct work_struct xpds_init_work;
atomic_t count_xpds_to_initialize;
atomic_t count_xpds_initialized;
wait_queue_head_t wait_for_xpd_initialization;
struct rw_semaphore in_use;
int num_xpds;
void *priv; /* Pointer to transport level data structures */
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_xbus_dir;
struct proc_dir_entry *proc_xbus_summary;
struct proc_dir_entry *proc_xbus_waitfor_xpds;
#ifdef PROTOCOL_DEBUG
struct proc_dir_entry *proc_xbus_command;
#endif
#endif
/* statistics */
int counters[XBUS_COUNTER_MAX];
};
#endif
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]))
#define LED_BLINK_PERIOD (HZ/8)
#define LED_ON 1
#define LED_OFF 0
#define LED_BLINK (-LED_BLINK_PERIOD)
/* Values of SLIC register 0x40 */
enum fxs_state {
FXS_LINE_DISABLED = 0x00,
FXS_LINE_ENABLED = 0x01,
FXS_LINE_CID = 0x02,
FXS_LINE_TIPOPEN = 0x03, /* For GroundStart signalling */
FXS_LINE_RING = 0x04,
FXS_LINE_REV_ACTIVE = 0x05
};
/*
* An XPD is a single Xorcom Protocol Device
*/
struct xpd {
char xpdname[XPD_NAMELEN];
struct zt_span span;
struct zt_chan *chans;
int channels;
xpd_type_t type;
byte revision; /* Card revision */
xpd_direction_t direction; /* TO_PHONE, TO_PSTN */
xpp_line_t no_pcm; /* Temporary: disable PCM (for USB-1) */
xpp_line_t offhook; /* Actual chip state: 0 - ONHOOK, 1 - OFHOOK */
xpp_line_t cid_on;
xpp_line_t digital_outputs; /* 0 - no, 1 - yes */
xpp_line_t digital_inputs; /* 0 - no, 1 - yes */
xpp_line_t digital_signalling; /* PRI/BRI signalling channels */
int ringing[CHANNELS_PERXPD];
bool ringer_on[CHANNELS_PERXPD]; /* For ring toggling */
wait_queue_head_t txstateq[CHANNELS_PERXPD]; /* waiting on the tx state to change */
int delay_until_dialtone[CHANNELS_PERXPD];
enum fxs_state lasttxhook[CHANNELS_PERXPD];
int idletxhookstate[CHANNELS_PERXPD]; /* IDLE changing hook state */
int ohttimer[CHANNELS_PERXPD];
xbus_t *xbus; /* The XBUS we are connected to */
spinlock_t lock;
atomic_t zt_registered; /* Am I fully registered with zaptel */
atomic_t open_counter; /* Number of open channels */
int flags;
#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
int counters[XPD_COUNTER_MAX];
const xproto_table_t *xproto; /* Card level protocol table */
const xops_t *xops; /* Card level operations */
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 id;
xpd_addr_t addr;
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];
};
#define for_each_line(xpd,i) for((i) = 0; (i) < (xpd)->channels; (i)++)
#endif
#endif /* XPD_H */
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