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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>
#ifdef XPP_DEBUGFS
#ifndef CONFIG_DEBUG_FS
#warning kernel does not include CONFIG_DEBUG_FS, canceling XPP_DEBUGFS support
#undef XPP_DEBUGFS
#else
#include <linux/debugfs.h>
#endif
#endif
#endif /* __KERNEL__ */
#include <zaptel.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, 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 (*xframe_send)(xbus_t *xbus, xframe_t *xframe);
xframe_t *(*xframe_new)(xbus_t *xbus, gfp_t flags);
void (*xframe_free)(xbus_t *xbus, xframe_t *p);
};
/*
* XBUS statistics counters
*/
enum {
XBUS_N_DESC_REQ,
XBUS_N_DEV_DESC_FULL,
XBUS_N_DEV_DESC_EMPTY,
XBUS_N_TX_XFRAME_PCM,
XBUS_N_RX_XFRAME_PCM,
XBUS_N_TX_PACK_PCM,
XBUS_N_RX_PACK_PCM,
XBUS_N_TX_BYTES,
XBUS_N_RX_BYTES,
XBUS_N_TX_PCM_FRAG,
};
#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_(TX_XFRAME_PCM),
C_(RX_XFRAME_PCM),
C_(TX_PACK_PCM),
C_(RX_PACK_PCM),
C_(TX_BYTES),
C_(RX_BYTES),
C_(TX_PCM_FRAG),
};
#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 */
byte subtype;
xpd_addr_t xpd_addr;
xpp_line_t line_status; /* Initial line status (offhook) */
};
#ifdef XPP_DEBUGFS
/* definition in xbus-core.c */
struct debugfs_data;
#endif
/*
* Encapsulate all poll related data of a single xbus.
*/
struct xbus_poller {
/*
* Bus scanning
*/
xbus_t *xbus;
struct workqueue_struct *wq;
bool is_polling;
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;
};
/*
* 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 astribank;
#define dev_to_xbus(dev) container_of(dev, struct xbus, astribank)
/* Simulator data */
xbus_type_t bus_type;
spinlock_t lock;
atomic_t pcm_nesting;
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;
/* PCM metrics */
struct timeval last_tx_sync;
struct timeval last_rx_sync;
unsigned long max_tx_sync;
unsigned long min_tx_sync;
unsigned long max_rx_sync;
unsigned long min_rx_sync;
struct xbus_poller *poller;
/*
* Sync adjustment
*/
int sync_adjustment;
int sync_adjustment_offset;
long pll_updated_at;
struct rw_semaphore in_use;
int num_xpds;
void *priv; /* Pointer to transport level data structures */
#ifdef XPP_DEBUGFS
struct dentry *debugfs_dir;
struct dentry *debugfs_file;
struct debugfs_data *debugfs_data;
#endif
#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]))
/*
* 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;
const char *type_name;
byte subtype;
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 msg_waiting; /* Voice Mail Waiting Indication */
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 */
/* maintained by card drivers */
uint pcm_len; /* allocation length of PCM packet (dynamic) */
xpp_line_t wanted_pcm_mask;
bool ringing[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;
bool blink_mode; /* for visual identification */
#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;
struct proc_dir_entry *proc_xpd_ztregister;
struct proc_dir_entry *proc_xpd_blink;
#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 xbus_idx; /* index in xbus->xpds[] */
xpd_addr_t addr;
struct list_head xpd_list;
unsigned int timer_count;
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)++)
#define IS_BRI(xpd) ((xpd)->type == XPD_TYPE_BRI_NT || (xpd)->type == XPD_TYPE_BRI_TE)
#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
#endif
#endif /* XPD_H */
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