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dahdi-linux/include/dahdi/kernel.h
Shaun Ruffell a45f853395 dahdi: Move the default tone lengths into include/dahdi/dahdi_config.h 
The default tone lengths are compile time options and they were in
digits.h to make it easy for users to patch.  Most of these settings are
potentially overridden from user space via the DAHDI_SET_DIALPARAMS
ioctl currently regardless of these settings.

In r9597 I moved digits.h directly into dahdi-base.c since I thought it
was broken out for sharing between compilation units as opposed to
ease patching.

I also changed the units of the default options to ms instead of in
samples.  This way if the sampling frequency changes the user will not
need to update the defaults.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
asterisk-dev-reference: 4D236FD7.30707@digium.com

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9616 a0bf4364-ded3-4de4-8d8a-66a801d63aff
2011-01-05 15:52:03 +00:00

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/*
* DAHDI Telephony Interface
*
* Written by Mark Spencer <markster@digium.com>
* Based on previous works, designs, and architectures conceived and
* written by Jim Dixon <jim@lambdatel.com>.
*
* Copyright (C) 2001 Jim Dixon / Zapata Telephony.
* Copyright (C) 2001 - 2010 Digium, Inc.
*
* All rights reserved.
*
*/
/*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2 as published by the
* Free Software Foundation. See the LICENSE file included with
* this program for more details.
*/
/*!
* \file
* \brief DAHDI kernel interface definitions
*/
#ifndef _DAHDI_KERNEL_H
#define _DAHDI_KERNEL_H
#include <dahdi/user.h>
#include <dahdi/fasthdlc.h>
#include <dahdi/dahdi_config.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)
#include <linux/config.h>
#endif
#include <linux/fs.h>
#include <linux/ioctl.h>
#ifdef CONFIG_DAHDI_NET
#include <linux/hdlc.h>
#endif
#ifdef CONFIG_DAHDI_PPP
#include <linux/ppp_channel.h>
#include <linux/skbuff.h>
#include <linux/interrupt.h>
#endif
#include <linux/poll.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,10)
#define dahdi_pci_module pci_register_driver
#else
#define dahdi_pci_module pci_module_init
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
#define DAHDI_IRQ_HANDLER(a) static irqreturn_t a(int irq, void *dev_id)
#else
#define DAHDI_IRQ_HANDLER(a) static irqreturn_t a(int irq, void *dev_id, struct pt_regs *regs)
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
#define DAHDI_IRQ_SHARED IRQF_SHARED
#define DAHDI_IRQ_DISABLED IRQF_DISABLED
#define DAHDI_IRQ_SHARED_DISABLED IRQF_SHARED | IRQF_DISABLED
#else
#define DAHDI_IRQ_SHARED SA_SHIRQ
#define DAHDI_IRQ_DISABLED SA_INTERRUPT
#define DAHDI_IRQ_SHARED_DISABLED SA_SHIRQ | SA_INTERRUPT
#endif
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,16)
#ifndef dev_notice
#define dev_notice(dev, format, arg...) \
dev_printk(KERN_NOTICE , dev , format , ## arg)
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
#define dev_name(dev) (dev)->bus_id
#define dev_set_name(dev, format, ...) \
snprintf((dev)->bus_id, BUS_ID_SIZE, format, ## __VA_ARGS__);
#endif
/*! Default chunk size for conferences and such -- static right now, might make
variable sometime. 8 samples = 1 ms = most frequent service interval possible
for a USB device */
#define DAHDI_CHUNKSIZE 8
#define DAHDI_MIN_CHUNKSIZE DAHDI_CHUNKSIZE
#define DAHDI_DEFAULT_CHUNKSIZE DAHDI_CHUNKSIZE
#define DAHDI_MAX_CHUNKSIZE DAHDI_CHUNKSIZE
#define DAHDI_CB_SIZE 2
/* DAHDI operates at 8Khz by default */
#define DAHDI_MS_TO_SAMPLES(ms) ((ms) * 8)
#define DAHDI_MSECS_PER_CHUNK (DAHDI_CHUNKSIZE/DAHDI_MS_TO_SAMPLES(1))
#define RING_DEBOUNCE_TIME 2000 /*!< 2000 ms ring debounce time */
typedef struct
{
int32_t gain;
int32_t a1;
int32_t a2;
int32_t b1;
int32_t b2;
int32_t z1;
int32_t z2;
} biquad2_state_t;
typedef struct
{
biquad2_state_t notch;
int notch_level;
int channel_level;
int tone_present;
int tone_cycle_duration;
int good_cycles;
int hit;
} echo_can_disable_detector_state_t;
struct sf_detect_state {
long x1;
long x2;
long y1;
long y2;
long e1;
long e2;
int samps;
int lastdetect;
};
struct dahdi_tone_state {
int v1_1;
int v2_1;
int v3_1;
int v1_2;
int v2_2;
int v3_2;
int modulate;
};
/*! \brief Conference queue structure */
struct confq {
u_char buffer[DAHDI_CHUNKSIZE * DAHDI_CB_SIZE];
u_char *buf[DAHDI_CB_SIZE];
int inbuf;
int outbuf;
};
struct dahdi_chan;
struct dahdi_echocan_state;
/*! Features a DAHDI echo canceler (software or hardware) can provide to the DAHDI core. */
struct dahdi_echocan_features {
/*! Able to detect CED tone (2100 Hz with phase reversals) in the transmit direction.
* If the echocan can detect this tone, it may report it it as an event (see
* the events.CED_tx_detected field of dahdi_echocan_state), and if it will automatically
* disable itself or its non-linear processor, then the NLP_automatic feature flag should also
* be set so that the DAHDI core doesn't bother trying to do so.
*/
u32 CED_tx_detect:1;
/*! Able to detect CED tone (2100 Hz with phase reversals) in the receive direction.
* If the echocan can detect this tone, it may report it it as an event (see
* the events.CED_rx_detected field of dahdi_echocan_state), and if it will automatically
* disable itself or its non-linear processor, then the NLP_automatic flag feature should also
* be set so that the DAHDI core doesn't bother trying to do so.
*/
u32 CED_rx_detect:1;
/*! Able to detect CNG tone (1100 Hz) in the transmit direction. */
u32 CNG_tx_detect:1;
/*! Able to detect CNG tone (1100 Hz) in the receive direction. */
u32 CNG_rx_detect:1;
/*! If the echocan's NLP can be enabled and disabled without requiring destruction
* and recreation of the state structure, this feature flag should be set and the
* echocan_NLP_toggle field of the dahdi_echocan_ops structure should be filled with a
* pointer to the function to perform that operation.
*/
u32 NLP_toggle:1;
/*! If the echocan will automatically disable itself (or even just its NLP) based on
* detection of a CED tone in either direction, this feature flag should be set (along
* with the tone detection feature flags).
*/
u32 NLP_automatic:1;
};
/*! Operations (methods) that can be performed on a DAHDI echo canceler instance (state
* structure) after it has been created, by either a software or hardware echo canceller.
* The echo canceler must populate the owner field of the dahdi_echocan_state structure
* with a pointer to the relevant operations structure for that instance.
*/
struct dahdi_echocan_ops {
/*! \brief Free an echocan state structure.
* \param[in,out] ec Pointer to the state structure to free.
*
* \return Nothing.
*/
void (*echocan_free)(struct dahdi_chan *chan, struct dahdi_echocan_state *ec);
/*! \brief Process an array of audio samples through the echocan.
* \param[in,out] ec Pointer to the state structure.
* \param[in,out] isig The receive direction data (will be modified).
* \param[in] iref The transmit direction data.
* \param[in] size The number of elements in the isig and iref arrays.
*
* Note: This function can also return events in the events field of the
* dahdi_echocan_state structure. If it can do so, then the echocan does
* not need to provide the echocan_events function.
*
* \return Nothing.
*/
void (*echocan_process)(struct dahdi_echocan_state *ec, short *isig, const short *iref, u32 size);
/*! \brief Retrieve events from the echocan.
* \param[in,out] ec Pointer to the state structure.
*
*
* If any events have occurred, the events field of the dahdi_echocan_state
* structure should be updated to include them.
*
* \return Nothing.
*/
void (*echocan_events)(struct dahdi_echocan_state *ec);
/*! \brief Feed a sample (and its position) for echocan training.
* \param[in,out] ec Pointer to the state structure.
* \param[in] pos The tap position to be 'trained'.
* \param[in] val The receive direction sample for the specified tap position.
*
* \retval Zero if training should continue.
* \retval Non-zero if training is complete.
*/
int (*echocan_traintap)(struct dahdi_echocan_state *ec, int pos, short val);
/*! \brief Enable or disable non-linear processing (NLP) in the echocan.
* \param[in,out] ec Pointer to the state structure.
* \param[in] enable Zero to disable, non-zero to enable.
*
* \return Nothing.
*/
void (*echocan_NLP_toggle)(struct dahdi_echocan_state *ec, unsigned int enable);
#ifdef CONFIG_DAHDI_ECHOCAN_PROCESS_TX
/*! \brief Process an array of TX audio samples.
*
* \return Nothing.
*/
void (*echocan_process_tx)(struct dahdi_echocan_state *ec,
short *tx, u32 size);
#endif
};
/*! A factory for creating instances of software echo cancelers to be used on DAHDI channels. */
struct dahdi_echocan_factory {
/*! Get the name of the factory. */
const char *(*get_name)(const struct dahdi_chan *chan);
/*! Pointer to the module that owns this factory; the module's reference count will be
* incremented/decremented by the DAHDI core as needed.
*/
struct module *owner;
/*! \brief Function to create an instance of the echocan.
* \param[in] ecp Structure defining parameters to be used for the instance creation.
* \param[in] p Pointer to the beginning of an (optional) array of user-defined parameters.
* \param[out] ec Pointer to the state structure that is created, if any.
*
* \retval Zero on success.
* \retval Non-zero on failure (return value will be returned to userspace so it should be a
* standard error number).
*/
int (*echocan_create)(struct dahdi_chan *chan, struct dahdi_echocanparams *ecp,
struct dahdi_echocanparam *p, struct dahdi_echocan_state **ec);
};
/*! \brief Register an echo canceler factory with the DAHDI core.
* \param[in] ec Pointer to the dahdi_echocan_factory structure to be registered.
*
* \retval Zero on success.
* \retval Non-zero on failure (return value will be a standard error number).
*/
int dahdi_register_echocan_factory(const struct dahdi_echocan_factory *ec);
/*! \brief Unregister a previously-registered echo canceler factory from the DAHDI core.
* \param[in] ec Pointer to the dahdi_echocan_factory structure to be unregistered.
*
* \return Nothing.
*/
void dahdi_unregister_echocan_factory(const struct dahdi_echocan_factory *ec);
enum dahdi_echocan_mode {
__ECHO_MODE_MUTE = 1 << 8,
ECHO_MODE_IDLE = 0,
ECHO_MODE_PRETRAINING = 1 | __ECHO_MODE_MUTE,
ECHO_MODE_STARTTRAINING = 2 | __ECHO_MODE_MUTE,
ECHO_MODE_AWAITINGECHO = 3 | __ECHO_MODE_MUTE,
ECHO_MODE_TRAINING = 4 | __ECHO_MODE_MUTE,
ECHO_MODE_ACTIVE = 5,
ECHO_MODE_FAX = 6,
};
/*! An instance of a DAHDI echo canceler (software or hardware). */
struct dahdi_echocan_state {
/*! Pointer to a dahdi_echocan_ops structure of operations that can be
* performed on this instance.
*/
const struct dahdi_echocan_ops *ops;
/*! State data used by the DAHDI core's CED detector for the transmit
* direction, if needed.
*/
echo_can_disable_detector_state_t txecdis;
/*! State data used by the DAHDI core's CED detector for the receive
* direction, if needed.
*/
echo_can_disable_detector_state_t rxecdis;
/*! Features offered by the echo canceler that provided this instance. */
struct dahdi_echocan_features features;
struct {
/*! The mode the echocan is currently in. */
enum dahdi_echocan_mode mode;
/*! The last tap position that was fed to the echocan's training function. */
u32 last_train_tap;
/*! How many samples to wait before beginning the training operation. */
u32 pretrain_timer;
} status;
/*! This structure contains event flags, allowing the echocan to report
* events that occurred as it processed the transmit and receive streams
* of samples. Each call to the echocan_process operation for this
* instance may report events, so the structure should be cleared before
* calling that operation.
*/
union dahdi_echocan_events {
u32 all;
struct {
/*! CED tone was detected in the transmit direction. If the
* echocan automatically disables its NLP when this occurs,
* it must also signal the NLP_auto_disabled event during the *same*
* call to echocan_process that reports the CED detection.
*/
u32 CED_tx_detected:1;
/*! CED tone was detected in the receive direction. If the
* echocan automatically disables its NLP when this occurs,
* it must also signal the NLP_auto_disabled event during the *same*
* call to echocan_process that reports the CED detection.
*/
u32 CED_rx_detected:1;
/*! CNG tone was detected in the transmit direction. */
u32 CNG_tx_detected:1;
/*! CNG tone was detected in the receive direction. */
u32 CNG_rx_detected:1;
/*! The echocan disabled its NLP automatically.
*/
u32 NLP_auto_disabled:1;
/*! The echocan enabled its NLP automatically.
*/
u32 NLP_auto_enabled:1;
} bit;
} events;
};
struct dahdi_chan {
#ifdef CONFIG_DAHDI_NET
/*! \note Must be first */
struct dahdi_hdlc *hdlcnetdev;
#endif
#ifdef CONFIG_DAHDI_PPP
struct ppp_channel *ppp;
struct tasklet_struct ppp_calls;
int do_ppp_wakeup;
int do_ppp_error;
struct sk_buff_head ppp_rq;
#endif
#ifdef BUFFER_DEBUG
int statcount;
int lastnumbufs;
#endif
spinlock_t lock;
char name[40];
/* Specified by DAHDI */
/*! \brief DAHDI channel number */
int channo;
int chanpos;
unsigned long flags;
long rxp1;
long rxp2;
long rxp3;
int txtone;
int tx_v2;
int tx_v3;
int v1_1;
int v2_1;
int v3_1;
int toneflags;
struct sf_detect_state rd;
struct dahdi_chan *master; /*!< Our Master channel (could be us) */
/*! \brief Next slave (if appropriate) */
struct dahdi_chan *nextslave;
u_char *writechunk; /*!< Actual place to write to */
u_char swritechunk[DAHDI_MAX_CHUNKSIZE]; /*!< Buffer to be written */
u_char *readchunk; /*!< Actual place to read from */
u_char sreadchunk[DAHDI_MAX_CHUNKSIZE]; /*!< Preallocated static area */
short *readchunkpreec;
/* Channel from which to read when DACSed. */
struct dahdi_chan *dacs_chan;
/*! Pointer to tx and rx gain tables */
const u_char *rxgain;
const u_char *txgain;
/* Specified by driver, readable by DAHDI */
void *pvt; /*!< Private channel data */
struct file *file; /*!< File structure */
#ifdef CONFIG_DAHDI_MIRROR
struct dahdi_chan *rxmirror; /*!< channel we mirror reads to */
struct dahdi_chan *txmirror; /*!< channel we mirror writes to */
struct dahdi_chan *srcmirror; /*!< channel we mirror from */
#endif /* CONFIG_DAHDI_MIRROR */
struct dahdi_span *span; /*!< Span we're a member of */
int sig; /*!< Signalling */
int sigcap; /*!< Capability for signalling */
__u32 chan_alarms; /*!< alarms status */
wait_queue_head_t waitq;
/* Used only by DAHDI -- NO DRIVER SERVICEABLE PARTS BELOW */
/* Buffer declarations */
u_char *readbuf[DAHDI_MAX_NUM_BUFS]; /*!< read buffer */
int inreadbuf;
int outreadbuf;
u_char *writebuf[DAHDI_MAX_NUM_BUFS]; /*!< write buffers */
int inwritebuf;
int outwritebuf;
int blocksize; /*!< Block size */
int eventinidx; /*!< out index in event buf (circular) */
int eventoutidx; /*!< in index in event buf (circular) */
unsigned int eventbuf[DAHDI_MAX_EVENTSIZE]; /*!< event circ. buffer */
int readn[DAHDI_MAX_NUM_BUFS]; /*!< # of bytes ready in read buf */
int readidx[DAHDI_MAX_NUM_BUFS]; /*!< current read pointer */
int writen[DAHDI_MAX_NUM_BUFS]; /*!< # of bytes ready in write buf */
int writeidx[DAHDI_MAX_NUM_BUFS]; /*!< current write pointer */
int numbufs; /*!< How many buffers in channel */
int txbufpolicy; /*!< Buffer policy */
int rxbufpolicy; /*!< Buffer policy */
int txdisable; /*!< Disable transmitter */
int rxdisable; /*!< Disable receiver */
/* Tone zone stuff */
struct dahdi_zone *curzone; /*!< Zone for selecting tones */
struct dahdi_tone *curtone; /*!< Current tone we're playing (if any) */
int tonep; /*!< Current position in tone */
struct dahdi_tone_state ts; /*!< Tone state */
/* Pulse dial stuff */
int pdialcount; /*!< pulse dial count */
/*! Ring cadence */
int ringcadence[DAHDI_MAX_CADENCE];
int firstcadencepos; /*!< Where to restart ring cadence */
/* Digit string dialing stuff */
int digitmode; /*!< What kind of tones are we sending? */
char txdialbuf[DAHDI_MAX_DTMF_BUF];
int dialing;
int afterdialingtimer;
int cadencepos; /*!< Where in the cadence we are */
/* I/O Mask */
unsigned int iomask; /*! I/O Mux signal mask */
/* HDLC state machines */
struct fasthdlc_state txhdlc;
struct fasthdlc_state rxhdlc;
int infcs;
/* Conferencing stuff */
int confna; /*! conference number (alias) */
int _confn; /*! Actual conference number */
int confmode; /*! conference mode */
int confmute; /*! conference mute mode */
struct dahdi_chan *conf_chan;
/* Incoming and outgoing conference chunk queues for
communicating between DAHDI master time and
other boards */
struct confq confin;
struct confq confout;
short getlin[DAHDI_MAX_CHUNKSIZE]; /*!< Last transmitted samples */
unsigned char getraw[DAHDI_MAX_CHUNKSIZE]; /*!< Last received raw data */
short getlin_lastchunk[DAHDI_MAX_CHUNKSIZE]; /*!< Last transmitted samples from last chunk */
short putlin[DAHDI_MAX_CHUNKSIZE]; /*!< Last received samples */
unsigned char putraw[DAHDI_MAX_CHUNKSIZE]; /*!< Last received raw data */
short conflast[DAHDI_MAX_CHUNKSIZE]; /*!< Last conference sample -- base part of channel */
short conflast1[DAHDI_MAX_CHUNKSIZE]; /*!< Last conference sample -- pseudo part of channel */
short conflast2[DAHDI_MAX_CHUNKSIZE]; /*!< Previous last conference sample -- pseudo part of channel */
/*! The echo canceler module that should be used to create an
instance when this channel needs one */
const struct dahdi_echocan_factory *ec_factory;
/*! The echo canceler module that owns the instance currently
on this channel, if one is present */
const struct dahdi_echocan_factory *ec_current;
/*! The state data of the echo canceler instance in use */
struct dahdi_echocan_state *ec_state;
/* RBS timings */
int prewinktime; /*!< pre-wink time (ms) */
int preflashtime; /*!< pre-flash time (ms) */
int winktime; /*!< wink time (ms) */
int flashtime; /*!< flash time (ms) */
int starttime; /*!< start time (ms) */
int rxwinktime; /*!< rx wink time (ms) */
int rxflashtime; /*!< rx flash time (ms) */
int debouncetime; /*!< FXS GS sig debounce time (ms) */
int pulsebreaktime; /*!< pulse line open time (ms) */
int pulsemaketime; /*!< pulse line closed time (ms) */
int pulseaftertime; /*!< pulse time between digits (ms) */
/*! RING debounce timer */
int ringdebtimer;
/*! RING trailing detector to make sure a RING is really over */
int ringtrailer;
/* PULSE digit receiver stuff */
int pulsecount;
int pulsetimer;
/* RBS timers */
int itimerset; /*!< what the itimer was set to last */
int itimer;
int otimer;
/* RBS state */
int gotgs;
int txstate;
int rxsig;
int txsig;
int rxsigstate;
/* non-RBS rx state */
int rxhooksig;
int txhooksig;
int kewlonhook;
/*! Idle signalling if CAS signalling */
int idlebits;
int deflaw; /*! 1 = mulaw, 2=alaw, 0=undefined */
short *xlaw;
#ifdef OPTIMIZE_CHANMUTE
int chanmute; /*!< no need for PCM data */
#endif
#ifdef CONFIG_CALC_XLAW
unsigned char (*lineartoxlaw)(short a);
#else
unsigned char *lin2x;
#endif
};
#ifdef CONFIG_DAHDI_NET
struct dahdi_hdlc {
struct net_device *netdev;
struct dahdi_chan *chan;
};
#endif
/*! Define the maximum block size */
#define DAHDI_MAX_BLOCKSIZE 8192
#define DAHDI_DEFAULT_WINKTIME 150 /*!< 150 ms default wink time */
#define DAHDI_DEFAULT_FLASHTIME 750 /*!< 750 ms default flash time */
#define DAHDI_DEFAULT_PREWINKTIME 50 /*!< 50 ms before wink */
#define DAHDI_DEFAULT_PREFLASHTIME 50 /*!< 50 ms before flash */
#define DAHDI_DEFAULT_STARTTIME 1500 /*!< 1500 ms of start */
#define DAHDI_DEFAULT_RINGTIME 2000 /*!< 2000 ms of ring on (start, FXO) */
#if 0
#define DAHDI_DEFAULT_RXWINKTIME 250 /*!< 250ms longest rx wink */
#endif
#define DAHDI_DEFAULT_RXWINKTIME 300 /*!< 300ms longest rx wink (to work with the Atlas) */
#define DAHDI_DEFAULT_RXFLASHTIME 1250 /*!< 1250ms longest rx flash */
#define DAHDI_DEFAULT_DEBOUNCETIME 600 /*!< 600ms of FXS GS signalling debounce */
#define DAHDI_DEFAULT_PULSEMAKETIME 50 /*!< 50 ms of line closed when dial pulsing */
#define DAHDI_DEFAULT_PULSEBREAKTIME 50 /*!< 50 ms of line open when dial pulsing */
#define DAHDI_DEFAULT_PULSEAFTERTIME 750 /*!< 750ms between dial pulse digits */
#define DAHDI_MINPULSETIME (15 * 8) /*!< 15 ms minimum */
#ifdef SHORT_FLASH_TIME
#define DAHDI_MAXPULSETIME (80 * 8) /*!< we need 80 ms, not 200ms, as we have a short flash */
#else
#define DAHDI_MAXPULSETIME (200 * 8) /*!< 200 ms maximum */
#endif
#define DAHDI_PULSETIMEOUT ((DAHDI_MAXPULSETIME / 8) + 50)
#define DAHDI_RINGTRAILER (50 * 8) /*!< Don't consider a ring "over" until it's been gone at least this
much time */
#define DAHDI_LOOPCODE_TIME 10000 /*!< send loop codes for 10 secs */
#define DAHDI_ALARMSETTLE_TIME 5000 /*!< allow alarms to settle for 5 secs */
#define DAHDI_AFTERSTART_TIME 500 /*!< 500ms after start */
#define DAHDI_RINGOFFTIME 4000 /*!< Turn off ringer for 4000 ms */
#define DAHDI_KEWLTIME 500 /*!< 500ms for kewl pulse */
#define DAHDI_AFTERKEWLTIME 300 /*!< 300ms after kewl pulse */
#define DAHDI_MAX_PRETRAINING 1000 /*!< 1000ms max pretraining time */
#ifdef FXSFLASH
#define DAHDI_FXSFLASHMINTIME 450 /*!< min 450ms */
#define DAHDI_FXSFLASHMAXTIME 550 /*!< max 550ms */
#endif
struct dahdi_chardev {
const char *name;
__u8 minor;
};
int dahdi_register_chardev(struct dahdi_chardev *dev);
int dahdi_unregister_chardev(struct dahdi_chardev *dev);
/*! \brief defines for transmit signalling */
enum dahdi_txsig {
DAHDI_TXSIG_ONHOOK, /*!< On hook */
DAHDI_TXSIG_OFFHOOK, /*!< Off hook */
DAHDI_TXSIG_START, /*!< Start / Ring */
DAHDI_TXSIG_KEWL, /*!< Drop battery if possible */
/*! Leave this as the last entry */
DAHDI_TXSIG_TOTAL,
};
enum dahdi_rxsig {
DAHDI_RXSIG_ONHOOK,
DAHDI_RXSIG_OFFHOOK,
DAHDI_RXSIG_START,
DAHDI_RXSIG_RING,
DAHDI_RXSIG_INITIAL
};
enum {
/* Span flags */
DAHDI_FLAGBIT_REGISTERED= 0,
DAHDI_FLAGBIT_RUNNING = 1,
DAHDI_FLAGBIT_RBS = 12, /*!< Span uses RBS signalling */
/* Channel flags */
DAHDI_FLAGBIT_DTMFDECODE= 2, /*!< Channel supports native DTMF decode */
DAHDI_FLAGBIT_MFDECODE = 3, /*!< Channel supports native MFr2 decode */
DAHDI_FLAGBIT_ECHOCANCEL= 4, /*!< Channel supports native echo cancellation */
DAHDI_FLAGBIT_HDLC = 5, /*!< Perform HDLC */
#ifdef CONFIG_DAHDI_NET
DAHDI_FLAGBIT_NETDEV = 6, /*!< Send to network */
#endif
DAHDI_FLAGBIT_CLEAR = 8, /*!< Clear channel */
DAHDI_FLAGBIT_AUDIO = 9, /*!< Audio mode channel */
DAHDI_FLAGBIT_OPEN = 10, /*!< Channel is open */
DAHDI_FLAGBIT_FCS = 11, /*!< Calculate FCS */
/* Reserve 12 for uniqueness with span flags */
DAHDI_FLAGBIT_LINEAR = 13, /*!< Talk to user space in linear */
DAHDI_FLAGBIT_PPP = 14, /*!< PPP is available */
DAHDI_FLAGBIT_T1PPP = 15,
DAHDI_FLAGBIT_SIGFREEZE = 16, /*!< Freeze signalling */
DAHDI_FLAGBIT_NOSTDTXRX = 17, /*!< Do NOT do standard transmit and receive on every interrupt */
DAHDI_FLAGBIT_LOOPED = 18, /*!< Loopback the receive data from the channel to the transmit */
DAHDI_FLAGBIT_MTP2 = 19, /*!< Repeats last message in buffer and also discards repeating messages sent to us */
DAHDI_FLAGBIT_HDLC56 = 20, /*!< Sets the given channel (if in HDLC mode) to use 56K HDLC instead of 64K */
};
#ifdef CONFIG_DAHDI_NET
/**
* have_netdev() - Return true if a channel has an associated network device.
* @chan: Then channel to check.
*
*/
static inline int dahdi_have_netdev(const struct dahdi_chan *chan)
{
return test_bit(DAHDI_FLAGBIT_NETDEV, &chan->flags);
}
#else
static inline int dahdi_have_netdev(const struct dahdi_chan *chan) { return 0; }
#endif
struct dahdi_count {
__u32 fe; /*!< Framing error counter */
__u32 cv; /*!< Coding violations counter */
__u32 bpv; /*!< Bipolar Violation counter */
__u32 crc4; /*!< CRC4 error counter */
__u32 ebit; /*!< current E-bit error count */
__u32 fas; /*!< current FAS error count */
__u32 be; /*!< current bit error count */
__u32 prbs; /*!< current PRBS detected pattern */
__u32 errsec; /*!< errored seconds */
};
/* map flagbits to flag masks */
#define DAHDI_FLAG(x) (1 << (DAHDI_FLAGBIT_ ## x))
/*! This is a redefinition of the flags from above to allow use of the
* legacy drivers that do not use the kernel atomic bit testing and
* changing routines.
*
* See the above descriptions for DAHDI_FLAGBIT_.... for documentation
* about function. */
/* Span flags */
#define DAHDI_FLAG_REGISTERED DAHDI_FLAG(REGISTERED)
#define DAHDI_FLAG_RUNNING DAHDI_FLAG(RUNNING)
#define DAHDI_FLAG_RBS DAHDI_FLAG(RBS)
/* Channel flags */
#define DAHDI_FLAG_DTMFDECODE DAHDI_FLAG(DTMFDECODE)
#define DAHDI_FLAG_MFDECODE DAHDI_FLAG(MFDECODE)
#define DAHDI_FLAG_ECHOCANCEL DAHDI_FLAG(ECHOCANCEL)
#define DAHDI_FLAG_HDLC DAHDI_FLAG(HDLC)
/* #define DAHDI_FLAG_NETDEV DAHDI_FLAG(NETDEV) */
#define DAHDI_FLAG_CLEAR DAHDI_FLAG(CLEAR)
#define DAHDI_FLAG_AUDIO DAHDI_FLAG(AUDIO)
#define DAHDI_FLAG_OPEN DAHDI_FLAG(OPEN)
#define DAHDI_FLAG_FCS DAHDI_FLAG(FCS)
/* Reserve 12 for uniqueness with span flags */
#define DAHDI_FLAG_LINEAR DAHDI_FLAG(LINEAR)
#define DAHDI_FLAG_PPP DAHDI_FLAG(PPP)
#define DAHDI_FLAG_T1PPP DAHDI_FLAG(T1PPP)
#define DAHDI_FLAG_SIGFREEZE DAHDI_FLAG(SIGFREEZE)
#define DAHDI_FLAG_NOSTDTXRX DAHDI_FLAG(NOSTDTXRX)
#define DAHDI_FLAG_LOOPED DAHDI_FLAG(LOOPED)
#define DAHDI_FLAG_MTP2 DAHDI_FLAG(MTP2)
#define DAHDI_FLAG_HDLC56 DAHDI_FLAG(HDLC56)
struct dahdi_span_ops {
struct module *owner; /*!< Which module is exporting this span. */
/* ==== Span Callback Operations ==== */
/*! Req: Set the requested chunk size. This is the unit in which you must
report results for conferencing, etc */
int (*setchunksize)(struct dahdi_span *span, int chunksize);
/*! Opt: Configure the span (if appropriate) */
int (*spanconfig)(struct dahdi_span *span, struct dahdi_lineconfig *lc);
/*! Opt: Start the span */
int (*startup)(struct dahdi_span *span);
/*! Opt: Shutdown the span */
int (*shutdown)(struct dahdi_span *span);
/*! Opt: Enable maintenance modes */
int (*maint)(struct dahdi_span *span, int mode);
#ifdef DAHDI_SYNC_TICK
/*! Opt: send sync to spans. Called in hard_irq context with chan_lock
* held.*/
void (*sync_tick)(struct dahdi_span *span, int is_master);
#endif
/* ==== Channel Callback Operations ==== */
/*! Opt: Set signalling type (if appropriate) */
int (*chanconfig)(struct dahdi_chan *chan, int sigtype);
/*! Opt: Prepare a channel for I/O */
int (*open)(struct dahdi_chan *chan);
/*! Opt: Close channel for I/O */
int (*close)(struct dahdi_chan *chan);
/*! Opt: IOCTL */
int (*ioctl)(struct dahdi_chan *chan, unsigned int cmd, unsigned long data);
/* Okay, now we get to the signalling. You have several options: */
/* Option 1: If you're a T1 like interface, you can just provide a
rbsbits function and we'll assert robbed bits for you. Be sure to
set the DAHDI_FLAG_RBS in this case. */
/*! Opt: If the span uses A/B bits, set them here */
int (*rbsbits)(struct dahdi_chan *chan, int bits);
/*! Option 2: If you don't know about sig bits, but do have their
equivalents (i.e. you can disconnect battery, detect off hook,
generate ring, etc directly) then you can just specify a
sethook function, and we'll call you with appropriate hook states
to set. Still set the DAHDI_FLAG_RBS in this case as well */
int (*hooksig)(struct dahdi_chan *chan, enum dahdi_txsig hookstate);
/*! Option 3: If you can't use sig bits, you can write a function
which handles the individual hook states */
int (*sethook)(struct dahdi_chan *chan, int hookstate);
/*! Opt: Used to tell an onboard HDLC controller that there is data ready to transmit */
void (*hdlc_hard_xmit)(struct dahdi_chan *chan);
/*! If the watchdog detects no received data, it will call the
watchdog routine */
int (*watchdog)(struct dahdi_span *span, int cause);
#ifdef DAHDI_AUDIO_NOTIFY
/*! Opt: audio is used, don't optimize out */
int (*audio_notify)(struct dahdi_chan *chan, int yes);
#endif
/*! Opt: Dacs the contents of chan2 into chan1 if possible */
int (*dacs)(struct dahdi_chan *chan1, struct dahdi_chan *chan2);
/*! Opt: Provide echo cancellation on a channel */
int (*echocan_create)(struct dahdi_chan *chan,
struct dahdi_echocanparams *ecp,
struct dahdi_echocanparam *p,
struct dahdi_echocan_state **ec);
/*! Opt: Provide the name of the echo canceller on a channel */
const char *(*echocan_name)(const struct dahdi_chan *chan);
};
struct dahdi_span {
spinlock_t lock;
char name[40]; /*!< Span name */
char desc[80]; /*!< Span description */
const char *spantype; /*!< span type in text form */
const char *manufacturer; /*!< span's device manufacturer */
char devicetype[80]; /*!< span's device type */
char location[40]; /*!< span device's location in system */
int deflaw; /*!< Default law (DAHDI_MULAW or DAHDI_ALAW) */
int alarms; /*!< Pending alarms on span */
unsigned long flags;
u8 cannot_provide_timing:1;
int irq; /*!< IRQ for this span's hardware */
int lbo; /*!< Span Line-Buildout */
int lineconfig; /*!< Span line configuration */
int linecompat; /*!< Span line compatibility (0 for
analog spans)*/
int channels; /*!< Number of channels in span */
int txlevel; /*!< Tx level */
int rxlevel; /*!< Rx level */
int syncsrc; /*!< current sync src (gets copied here) */
struct dahdi_count count; /*!< Performance and Error counters */
int maintstat; /*!< Maintenance state */
int mainttimer; /*!< Maintenance timer */
int irqmisses; /*!< Interrupt misses */
int timingslips; /*!< Clock slips */
struct dahdi_chan **chans; /*!< Member channel structures */
const struct dahdi_span_ops *ops; /*!< span callbacks. */
/* Used by DAHDI only -- no user servicable parts inside */
int spanno; /*!< Span number for DAHDI */
int offset; /*!< Offset within a given card */
int lastalarms; /*!< Previous alarms */
#ifdef CONFIG_DAHDI_WATCHDOG
int watchcounter;
int watchstate;
#endif
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
#endif
struct list_head node;
};
struct dahdi_transcoder_channel {
void *pvt;
struct dahdi_transcoder *parent;
wait_queue_head_t ready;
__u32 built_fmts;
#define DAHDI_TC_FLAG_BUSY 1
#define DAHDI_TC_FLAG_CHAN_BUILT 2
#define DAHDI_TC_FLAG_NONBLOCK 3
#define DAHDI_TC_FLAG_DATA_WAITING 4
unsigned long flags;
u32 dstfmt;
u32 srcfmt;
};
static inline int
dahdi_tc_is_built(struct dahdi_transcoder_channel *dtc) {
return test_bit(DAHDI_TC_FLAG_CHAN_BUILT, &dtc->flags);
}
static inline void
dahdi_tc_set_built(struct dahdi_transcoder_channel *dtc) {
set_bit(DAHDI_TC_FLAG_CHAN_BUILT, &dtc->flags);
}
static inline void
dahdi_tc_clear_built(struct dahdi_transcoder_channel *dtc) {
clear_bit(DAHDI_TC_FLAG_CHAN_BUILT, &dtc->flags);
}
static inline int
dahdi_tc_is_nonblock(struct dahdi_transcoder_channel *dtc) {
return test_bit(DAHDI_TC_FLAG_NONBLOCK, &dtc->flags);
}
static inline void
dahdi_tc_set_nonblock(struct dahdi_transcoder_channel *dtc) {
set_bit(DAHDI_TC_FLAG_NONBLOCK, &dtc->flags);
}
static inline void
dahdi_tc_clear_nonblock(struct dahdi_transcoder_channel *dtc) {
clear_bit(DAHDI_TC_FLAG_NONBLOCK, &dtc->flags);
}
static inline int
dahdi_tc_is_data_waiting(struct dahdi_transcoder_channel *dtc) {
return test_bit(DAHDI_TC_FLAG_DATA_WAITING, &dtc->flags);
}
static inline int
dahdi_tc_is_busy(struct dahdi_transcoder_channel *dtc) {
return test_bit(DAHDI_TC_FLAG_BUSY, &dtc->flags);
}
static inline void
dahdi_tc_set_busy(struct dahdi_transcoder_channel *dtc) {
set_bit(DAHDI_TC_FLAG_BUSY, &dtc->flags);
}
static inline void
dahdi_tc_clear_busy(struct dahdi_transcoder_channel *dtc) {
clear_bit(DAHDI_TC_FLAG_BUSY, &dtc->flags);
}
static inline void
dahdi_tc_set_data_waiting(struct dahdi_transcoder_channel *dtc) {
set_bit(DAHDI_TC_FLAG_DATA_WAITING, &dtc->flags);
}
static inline void
dahdi_tc_clear_data_waiting(struct dahdi_transcoder_channel *dtc) {
clear_bit(DAHDI_TC_FLAG_DATA_WAITING, &dtc->flags);
}
struct dahdi_transcoder {
struct list_head active_list_node;
struct list_head registration_list_node;
char name[80];
int numchannels;
unsigned int srcfmts;
unsigned int dstfmts;
struct file_operations fops;
int (*allocate)(struct dahdi_transcoder_channel *channel);
int (*release)(struct dahdi_transcoder_channel *channel);
/* Transcoder channels */
struct dahdi_transcoder_channel channels[0];
};
#define DAHDI_WATCHDOG_NOINTS (1 << 0)
#define DAHDI_WATCHDOG_INIT 1000
#define DAHDI_WATCHSTATE_UNKNOWN 0
#define DAHDI_WATCHSTATE_OK 1
#define DAHDI_WATCHSTATE_RECOVERING 2
#define DAHDI_WATCHSTATE_FAILED 3
struct dahdi_dynamic {
char addr[40];
char dname[20];
int err;
struct kref kref;
long rxjif;
unsigned short txcnt;
unsigned short rxcnt;
struct dahdi_span span;
struct dahdi_chan *chans[256];
struct dahdi_dynamic_driver *driver;
void *pvt;
int timing;
int master;
unsigned char *msgbuf;
struct list_head list;
};
struct dahdi_dynamic_driver {
/*! Driver name (e.g. Eth) */
const char *name;
/*! Driver description */
const char *desc;
/*! Create a new transmission pipe */
int (*create)(struct dahdi_dynamic *d, const char *address);
/*! Destroy a created transmission pipe */
void (*destroy)(struct dahdi_dynamic *d);
/*! Transmit a given message */
void (*transmit)(struct dahdi_dynamic *d, u8 *msg, size_t msglen);
/*! Flush any pending messages */
int (*flush)(void);
struct list_head list;
struct module *owner;
};
/*! \brief Receive a dynamic span message */
void dahdi_dynamic_receive(struct dahdi_span *span, unsigned char *msg, int msglen);
/*! \brief Register a dynamic driver */
int dahdi_dynamic_register_driver(struct dahdi_dynamic_driver *driver);
/*! \brief Unregister a dynamic driver */
void dahdi_dynamic_unregister_driver(struct dahdi_dynamic_driver *driver);
/*! Receive on a span. The DAHDI interface will handle all the calculations for
all member channels of the span, pulling the data from the readchunk buffer */
int dahdi_receive(struct dahdi_span *span);
/*! Prepare writechunk buffers on all channels for this span */
int dahdi_transmit(struct dahdi_span *span);
/*! Abort the buffer currently being receive with event "event" */
void dahdi_hdlc_abort(struct dahdi_chan *ss, int event);
/*! Indicate to DAHDI that the end of frame was received and rotate buffers */
void dahdi_hdlc_finish(struct dahdi_chan *ss);
/*! Put a chunk of data into the current receive buffer */
void dahdi_hdlc_putbuf(struct dahdi_chan *ss, unsigned char *rxb, int bytes);
/*! Get a chunk of data from the current transmit buffer. Returns -1 if no data
* is left to send, 0 if there is data remaining in the current message to be sent
* and 1 if the currently transmitted message is now done */
int dahdi_hdlc_getbuf(struct dahdi_chan *ss, unsigned char *bufptr, unsigned int *size);
/*! Register a span. Returns 0 on success, -1 on failure. Pref-master is non-zero if
we should have preference in being the master device */
int dahdi_register(struct dahdi_span *span, int prefmaster);
/*! Allocate / free memory for a transcoder */
struct dahdi_transcoder *dahdi_transcoder_alloc(int numchans);
void dahdi_transcoder_free(struct dahdi_transcoder *ztc);
/*! \brief Register a transcoder */
int dahdi_transcoder_register(struct dahdi_transcoder *tc);
/*! \brief Unregister a transcoder */
int dahdi_transcoder_unregister(struct dahdi_transcoder *tc);
/*! \brief Alert a transcoder */
int dahdi_transcoder_alert(struct dahdi_transcoder_channel *ztc);
/*! \brief Unregister a span */
int dahdi_unregister(struct dahdi_span *span);
/*! \brief Gives a name to an LBO */
const char *dahdi_lboname(int lbo);
/*! \brief Tell DAHDI about changes in received rbs bits */
void dahdi_rbsbits(struct dahdi_chan *chan, int bits);
/*! \brief Tell DAHDI abou changes in received signalling */
void dahdi_hooksig(struct dahdi_chan *chan, enum dahdi_rxsig rxsig);
/*! \brief Queue an event on a channel */
void dahdi_qevent_nolock(struct dahdi_chan *chan, int event);
/*! \brief Queue an event on a channel, locking it first */
void dahdi_qevent_lock(struct dahdi_chan *chan, int event);
/*! \brief Notify a change possible change in alarm status on a channel */
void dahdi_alarm_channel(struct dahdi_chan *chan, int alarms);
/*! \brief Notify a change possible change in alarm status on a span */
void dahdi_alarm_notify(struct dahdi_span *span);
/*! \brief Initialize a tone state */
void dahdi_init_tone_state(struct dahdi_tone_state *ts, struct dahdi_tone *zt);
/*! \brief Get a given MF tone struct, suitable for dahdi_tone_nextsample. */
struct dahdi_tone *dahdi_mf_tone(const struct dahdi_chan *chan, char digit, int digitmode);
/* Echo cancel a receive and transmit chunk for a given channel. This
should be called by the low-level driver as close to the interface
as possible. ECHO CANCELLATION IS NO LONGER AUTOMATICALLY DONE
AT THE DAHDI LEVEL. dahdi_ec_chunk will not echo cancel if it should
not be doing so. rxchunk is modified in-place */
void dahdi_ec_chunk(struct dahdi_chan *chan, unsigned char *rxchunk, const unsigned char *txchunk);
void dahdi_ec_span(struct dahdi_span *span);
extern struct file_operations *dahdi_transcode_fops;
/* Don't use these directly -- they're not guaranteed to
be there. */
extern short __dahdi_mulaw[256];
extern short __dahdi_alaw[256];
#ifdef CONFIG_CALC_XLAW
u_char __dahdi_lineartoulaw(short a);
u_char __dahdi_lineartoalaw(short a);
#else
extern u_char __dahdi_lin2mu[16384];
extern u_char __dahdi_lin2a[16384];
#endif
/*! \brief Used by dynamic DAHDI -- don't use directly */
void dahdi_set_dynamic_ioctl(int (*func)(unsigned int cmd, unsigned long data));
/*! \brief Used by DAHDI HPEC module -- don't use directly */
void dahdi_set_hpec_ioctl(int (*func)(unsigned int cmd, unsigned long data));
/*! \brief Used privately by DAHDI. Avoid touching directly */
struct dahdi_tone {
int fac1;
int init_v2_1;
int init_v3_1;
int fac2;
int init_v2_2;
int init_v3_2;
int tonesamples; /*!< How long to play this tone before
going to the next (in samples) */
struct dahdi_tone *next; /* Next tone in this sequence */
int modulate;
};
static inline short dahdi_tone_nextsample(struct dahdi_tone_state *ts, struct dahdi_tone *zt)
{
/* follow the curves, return the sum */
int p;
ts->v1_1 = ts->v2_1;
ts->v2_1 = ts->v3_1;
ts->v3_1 = (zt->fac1 * ts->v2_1 >> 15) - ts->v1_1;
ts->v1_2 = ts->v2_2;
ts->v2_2 = ts->v3_2;
ts->v3_2 = (zt->fac2 * ts->v2_2 >> 15) - ts->v1_2;
/* Return top 16 bits */
if (!ts->modulate) return ts->v3_1 + ts->v3_2;
/* we are modulating */
p = ts->v3_2 - 32768;
if (p < 0) p = -p;
p = ((p * 9) / 10) + 1;
return (ts->v3_1 * p) >> 15;
}
static inline short dahdi_txtone_nextsample(struct dahdi_chan *ss)
{
/* follow the curves, return the sum */
ss->v1_1 = ss->v2_1;
ss->v2_1 = ss->v3_1;
ss->v3_1 = (ss->txtone * ss->v2_1 >> 15) - ss->v1_1;
return ss->v3_1;
}
/* These are the right functions to use. */
#define DAHDI_MULAW(a) (__dahdi_mulaw[(a)])
#define DAHDI_ALAW(a) (__dahdi_alaw[(a)])
#define DAHDI_XLAW(a,c) (c->xlaw[(a)])
#ifdef CONFIG_CALC_XLAW
#define DAHDI_LIN2MU(a) (__dahdi_lineartoulaw((a)))
#define DAHDI_LIN2A(a) (__dahdi_lineartoalaw((a)))
#define DAHDI_LIN2X(a,c) ((c)->lineartoxlaw((a)))
#else
/* Use tables */
#define DAHDI_LIN2MU(a) (__dahdi_lin2mu[((unsigned short)(a)) >> 2])
#define DAHDI_LIN2A(a) (__dahdi_lin2a[((unsigned short)(a)) >> 2])
/* Manipulate as appropriate for x-law */
#define DAHDI_LIN2X(a,c) ((c)->lin2x[((unsigned short)(a)) >> 2])
#endif /* CONFIG_CALC_XLAW */
/* Data formats for capabilities and frames alike (from Asterisk) */
/*! G.723.1 compression */
#define DAHDI_FORMAT_G723_1 (1 << 0)
/*! GSM compression */
#define DAHDI_FORMAT_GSM (1 << 1)
/*! Raw mu-law data (G.711) */
#define DAHDI_FORMAT_ULAW (1 << 2)
/*! Raw A-law data (G.711) */
#define DAHDI_FORMAT_ALAW (1 << 3)
/*! ADPCM (G.726, 32kbps) */
#define DAHDI_FORMAT_G726 (1 << 4)
/*! ADPCM (IMA) */
#define DAHDI_FORMAT_ADPCM (1 << 5)
/*! Raw 16-bit Signed Linear (8000 Hz) PCM */
#define DAHDI_FORMAT_SLINEAR (1 << 6)
/*! LPC10, 180 samples/frame */
#define DAHDI_FORMAT_LPC10 (1 << 7)
/*! G.729A audio */
#define DAHDI_FORMAT_G729A (1 << 8)
/*! SpeeX Free Compression */
#define DAHDI_FORMAT_SPEEX (1 << 9)
/*! iLBC Free Compression */
#define DAHDI_FORMAT_ILBC (1 << 10)
/*! Maximum audio format */
#define DAHDI_FORMAT_MAX_AUDIO (1 << 15)
/*! Maximum audio mask */
#define DAHDI_FORMAT_AUDIO_MASK ((1 << 16) - 1)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
#define KERN_CONT ""
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
#ifndef clamp
#define clamp(x, low, high) min(max(low, x), high)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
/* Some distributions backported fatal_signal_pending so we'll use a macro to
* override the inline function definition. */
#define fatal_signal_pending(p) \
(signal_pending((p)) && sigismember(&(p)->pending.signal, SIGKILL))
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
#include <linux/ctype.h>
/* A define of 'clamp_val' happened to be added in the patch
* linux-2.6-sata-prep-work-for-rhel5-3.patch kernel-2.6.spec that also
* backported support for strcasecmp to some later RHEL/Centos kernels.
* If you have an older kernel that breaks because strcasecmp is already
* defined, somebody out-smarted us. In that case, replace the line below
* with '#if 0' to get the code building, and file a bug report at
* https://issues.asterisk.org/ .
*/
#ifndef clamp_val
static inline int strcasecmp(const char *s1, const char *s2)
{
int c1, c2;
do {
c1 = tolower(*s1++);
c2 = tolower(*s2++);
} while (c1 == c2 && c1 != 0);
return c1 - c2;
}
#endif /* clamp_val */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)
static inline void list_replace(struct list_head *old, struct list_head *new)
{
new->next = old->next;
new->next->prev = new;
new->prev = old->prev;
new->prev->next = new;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 14)
#define kzalloc(a, b) kcalloc(1, a, b)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 12)
#define synchronize_rcu() synchronize_kernel()
#define kasprintf dahdi_kasprintf
char *dahdi_kasprintf(gfp_t gfp, const char *fmt, ...);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 11)
#if !defined(HAVE_WAIT_FOR_COMPLETION_TIMEOUT)
static inline unsigned long
wait_for_completion_interruptible_timeout(struct completion *x,
unsigned long timeout)
{
/* There is a race condition here. If x->done is reset to 0
* before the call to wait_for_completion after this thread wakes.
*/
timeout = wait_event_interruptible_timeout(x->wait, x->done, timeout);
if (timeout)
wait_for_completion(x);
return timeout;
}
#endif
#endif /* 2.6.11 */
#endif /* 2.6.12 */
#endif /* 2.6.14 */
#endif /* 2.6.18 */
#endif /* 2.6.22 */
#endif /* 2.6.25 */
#endif /* 2.6.26 */
#endif /* 2.6.31 */
#ifndef DEFINE_SPINLOCK
#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
#endif
#ifndef DEFINE_SEMAPHORE
#define DEFINE_SEMAPHORE(name) \
struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
#endif
#ifndef DEFINE_MUTEX
#define DEFINE_MUTEX DEFINE_SEMAPHORE
#define mutex_lock(_x) down(_x)
#define mutex_unlock(_x) up(_x)
#endif
#ifndef DEFINE_PCI_DEVICE_TABLE
#define DEFINE_PCI_DEVICE_TABLE(_x) \
const struct pci_device_id _x[] __devinitdata
#endif
#ifndef DMA_BIT_MASK
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
#endif
#define DAHDI_CTL 0
#define DAHDI_TRANSCODE 250
#define DAHDI_TIMER 253
#define DAHDI_CHANNEL 254
#define DAHDI_PSEUDO 255
/* prink-wrapper macros */
#define DAHDI_PRINTK(level, category, fmt, ...) \
printk(KERN_ ## level "%s%s-%s: " fmt, #level, category, \
THIS_MODULE->name, ## __VA_ARGS__)
#define span_printk(level, category, span, fmt, ...) \
printk(KERN_ ## level "%s%s-%s: span-%d: " fmt, #level, \
category, THIS_MODULE->name, (span)->spanno, ## __VA_ARGS__)
#define chan_printk(level, category, chan, fmt, ...) \
printk(KERN_ ## level "%s%s-%s: %d: " fmt, #level, \
category, THIS_MODULE->name, (chan)->channo, ## __VA_ARGS__)
#define dahdi_err(fmt, ...) DAHDI_PRINTK(ERR, "", fmt, ## __VA_ARGS__)
#define span_info(span, fmt, ...) span_printk(INFO, "", span, fmt, \
## __VA_ARGS__)
#define span_notice(span, fmt, ...) span_printk(NOTICE, "", span, fmt, \
## __VA_ARGS__)
#define span_err(span, fmt, ...) span_printk(ERR, "", span, fmt, \
## __VA_ARGS__)
#define chan_notice(chan, fmt, ...) chan_printk(NOTICE, "", chan, fmt, \
## __VA_ARGS__)
#define chan_err(chan, fmt, ...) chan_printk(ERR, "", chan, fmt, \
## __VA_ARGS__)
/* The dbg_* ones use a magical variable 'debug' and the user should be
* aware of that.
*/
#ifdef DAHDI_PRINK_MACROS_USE_debug
#ifndef BIT /* added in 2.6.24 */
#define BIT(i) (1UL << (i))
#endif
/* Standard debug bit values. Any module may define others. They must
* be of the form DAHDI_DBG_*
*/
#define DAHDI_DBG_GENERAL BIT(0)
#define DAHDI_DBG_DEVICES BIT(7) /* instantiation/destruction etc. */
#define dahdi_dbg(bits, fmt, ...) \
((void)((debug & (DAHDI_DBG_ ## bits)) && DAHDI_PRINTK(DEBUG, \
"-" #bits, "%s: " fmt, __func__, ## __VA_ARGS__)))
#define span_dbg(bits, span, fmt, ...) \
((void)((debug & (DAHDI_DBG_ ## bits)) && \
span_printk(DEBUG, "-" #bits, span, "%s: " \
fmt, __func__, ## __VA_ARGS__)))
#define chan_dbg(bits, chan, fmt, ...) \
((void)((debug & (DAHDI_DBG_ ## bits)) && \
chan_printk(DEBUG, "-" #bits, chan, \
"%s: " fmt, __func__, ## __VA_ARGS__)))
#endif /* DAHDI_PRINK_MACROS_USE_debug */
#endif /* _DAHDI_KERNEL_H */
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