FGCOM/dahdi-linux
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
47f0fde0f1
dahdi-linux/include/dahdi/kernel.h
Shaun Ruffell 761e02da52 dahdi: Protect echocan creation/destruction with mutex. 
This closes a reference and memory leak when multiple CPUs are enabling echocan
on a single channel in parallel.

The essential problem is that the call to try_module_get() is not serialized.
Two separate threads can come into ioctl_echocan() on the same channel, they
coordinate via the dahdi_chan.lock to release any current echocan, but then both
create a new echocan state, bump the reference on the module, and the last one
through will actually attach the new state to the channel. The earlier reference
/ memory is leaked.

I tried to conceive of a way to fix this leak without adding a new lock, but the
choices where calling throught the function pointers with dahdi_chan.lock.
Otherwise I needed to change the semantics of echocan_create /free which would
ripple through the hardware echocan modules.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
2014-06-20 13:01:27 -05:00

1662 lines
51 KiB
C
Raw Blame History

/*
* 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 - 2012 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>
#include <linux/fs.h>
#include <linux/device.h>
#include <linux/cdev.h>
#include <linux/module.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/device.h>
#include <linux/sysfs.h>
#include <linux/poll.h>
#define dahdi_pci_module pci_register_driver
#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, 26)
#ifdef CONFIG_PCI
#include <linux/pci-aspm.h>
#endif
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29)
#define HAVE_NET_DEVICE_OPS
#endif
#define DAHDI_IRQ_SHARED IRQF_SHARED
#define DAHDI_IRQ_DISABLED IRQF_DISABLED
#define DAHDI_IRQ_SHARED_DISABLED IRQF_SHARED | IRQF_DISABLED
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
# ifdef RHEL_RELEASE_VERSION
# if RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(5, 6)
#define dev_name(dev) ((dev)->bus_id)
#define dev_set_name(dev, format, ...) \
snprintf((dev)->bus_id, BUS_ID_SIZE, format, ## __VA_ARGS__)
# else
#define dev_set_name(dev, format, ...) \
do { \
kobject_set_name(&(dev)->kobj, format, ## __VA_ARGS__); \
snprintf((dev)->bus_id, BUS_ID_SIZE, \
kobject_name(&(dev)->kobj)); \
} while (0)
# endif
# else
#define dev_name(dev) ((dev)->bus_id)
#define dev_set_name(dev, format, ...) \
snprintf((dev)->bus_id, BUS_ID_SIZE, format, ## __VA_ARGS__)
# endif
#endif
/* __dev* were removed in 3.8. They still have effect in 2.6.18. */
#ifndef __devinit
# define __devinit
# define __devinitdata
# define __devexit
# define __devexit_p(x) x
#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 (1 << 3)
/* 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;
struct mutex mutex;
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 txdisable; /*!< Disable transmitter */
/* 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 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
struct device chan_device; /*!< Kernel object for this chan */
#define dev_to_chan(dev) container_of(dev, struct dahdi_chan, chan_device)
};
#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 */
DAHDI_FLAGBIT_BUFEVENTS = 21, /*!< Report buffer events */
DAHDI_FLAGBIT_TXUNDERRUN = 22, /*!< Transmit underrun condition */
DAHDI_FLAGBIT_RXOVERRUN = 23, /*!< Receive overrun condition */
DAHDI_FLAGBIT_DEVFILE = 25, /*!< Channel has a sysfs dev file */
};
#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 */
u32 timingslips; /*!< Clock slips */
};
/* 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)
#define DAHDI_FLAG_BUFEVENTS DAHDI_FLAG(BUFEVENTS)
#define DAHDI_FLAG_TXUNDERRUN DAHDI_FLAG(TXUNDERRUN)
#define DAHDI_FLAG_RXOVERRUN DAHDI_FLAG(RXOVERRUN)
enum spantypes {
SPANTYPE_INVALID = 0,
SPANTYPE_ANALOG_FXS,
SPANTYPE_ANALOG_FXO,
SPANTYPE_ANALOG_MIXED,
SPANTYPE_DIGITAL_E1,
SPANTYPE_DIGITAL_T1,
SPANTYPE_DIGITAL_J1,
SPANTYPE_DIGITAL_BRI_NT,
SPANTYPE_DIGITAL_BRI_TE,
SPANTYPE_DIGITAL_BRI_SOFT,
SPANTYPE_DIGITAL_DYNAMIC,
};
const char *dahdi_spantype2str(enum spantypes st);
enum spantypes dahdi_str2spantype(const char *name);
const char *dahdi_lineconfig_bit_name(int lineconfig_bit);
ssize_t lineconfig_str(int lineconfig, char buf[], size_t size);
struct file;
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 file *file, struct dahdi_span *span,
struct dahdi_lineconfig *lc);
/*! Opt: Start the span */
int (*startup)(struct file *file, 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 file *file, 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: Enable preechocan stream from inline HW echocanceler. */
int (*enable_hw_preechocan)(struct dahdi_chan *chan);
/*! Opt: Disable preechocan stream from inline HW echocanceler. */
void (*disable_hw_preechocan)(struct dahdi_chan *chan);
/*! 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);
/*! When using "assigned spans", this function is called back when this
* span has been assigned with the system. */
void (*assigned)(struct dahdi_span *span);
/*! Called when the spantype / linemode is changed before the span is
* assigned a number. */
int (*set_spantype)(struct dahdi_span *span, enum spantypes st);
};
/**
* dahdi_device - Represents a device that can contain one or more spans.
*
* @spans: List of child spans.
* @manufacturer: Device manufacturer.
* @location: The location of this device. This should not change if
* the device is replaced (e.g: in the same PCI slot)
* @hardware_id: The hardware_id of this device (NULL for devices without
* a hardware_id). This should not change if the device is
* relocated to a different location (e.g: different PCI slot)
* @devicetype: What type of device this is.
* @irqmisses: Count of "interrupt misses" for this device.
*
*/
struct dahdi_device {
struct list_head spans;
const char *manufacturer;
const char *location;
const char *hardware_id;
const char *devicetype;
struct device dev;
unsigned int irqmisses;
struct timespec registration_time;
};
struct dahdi_span {
spinlock_t lock;
char name[40]; /*!< Span name */
char desc[80]; /*!< Span description */
enum spantypes spantype; /*!< span type */
int deflaw; /*!< Default law (DAHDI_MULAW or DAHDI_ALAW) */
int alarms; /*!< Pending alarms on span */
unsigned long flags;
u8 cannot_provide_timing:1;
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 */
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 spans_node;
struct dahdi_device *parent;
struct list_head device_node;
struct device *span_device;
};
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;
};
int dahdi_is_sync_master(const struct dahdi_span *span);
struct dahdi_span *get_master_span(void);
void set_master_span(int spanno);
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_device *ddev;
struct dahdi_span span;
struct dahdi_chan *chans[256];
struct dahdi_dynamic_driver *driver;
void *pvt;
int timing;
int master;
unsigned char *msgbuf;
struct device *dev;
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;
/*! Numberic id of next device created by this driver. */
unsigned int id;
};
/*! \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);
int _dahdi_receive(struct dahdi_span *span);
/*! 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 */
static inline int dahdi_receive(struct dahdi_span *span)
{
unsigned long flags;
int ret;
local_irq_save(flags);
ret = _dahdi_receive(span);
local_irq_restore(flags);
return ret;
}
int _dahdi_transmit(struct dahdi_span *span);
/*! Prepare writechunk buffers on all channels for this span */
static inline int dahdi_transmit(struct dahdi_span *span)
{
unsigned long flags;
int ret;
local_irq_save(flags);
ret = _dahdi_transmit(span);
local_irq_restore(flags);
return ret;
}
static inline int dahdi_is_digital_span(const struct dahdi_span *s)
{
return (s->linecompat > 0);
}
static inline int dahdi_is_t1_span(const struct dahdi_span *s)
{
return (s->linecompat & (DAHDI_CONFIG_D4 | DAHDI_CONFIG_ESF |
DAHDI_CONFIG_B8ZS)) > 0;
}
static inline int dahdi_is_e1_span(const struct dahdi_span *s)
{
return dahdi_is_digital_span(s) && !dahdi_is_t1_span(s);
}
/*! 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 device. Returns 0 on success, -1 on failure. */
struct dahdi_device *dahdi_create_device(void);
int dahdi_register_device(struct dahdi_device *ddev, struct device *parent);
void dahdi_unregister_device(struct dahdi_device *ddev);
void dahdi_free_device(struct dahdi_device *ddev);
void dahdi_init_span(struct dahdi_span *span);
/*! 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 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);
/*! \brief Convert signalling bits to human readable string */
const char *sigstr(int sig);
/*! \brief Convert alarm bits to human readable string */
int fill_alarm_string(char *buf, int count, int alarms);
/* 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 *ss, u8 *rxchunk,
const u8 *preecchunk, const u8 *txchunk);
static inline void _dahdi_ec_chunk(struct dahdi_chan *chan,
u8 *rxchunk, const u8 *txchunk)
{
__dahdi_ec_chunk(chan, rxchunk, rxchunk, txchunk);
}
static inline void dahdi_ec_chunk(struct dahdi_chan *ss, unsigned char *rxchunk,
const unsigned char *txchunk)
{
unsigned long flags;
local_irq_save(flags);
_dahdi_ec_chunk(ss, rxchunk, txchunk);
local_irq_restore(flags);
}
void _dahdi_ec_span(struct dahdi_span *span);
static inline void dahdi_ec_span(struct dahdi_span *span)
{
unsigned long flags;
local_irq_save(flags);
_dahdi_ec_span(span);
local_irq_restore(flags);
}
extern struct file_operations *dahdi_transcode_fops;
int dahdi_get_auto_assign_spans(void);
/* 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
struct dahdi_dynamic_ops {
struct module *owner;
int (*ioctl)(unsigned int cmd, unsigned long data);
};
/*! \brief Used by dynamic DAHDI -- don't use directly */
void dahdi_set_dynamic_ops(const struct dahdi_dynamic_ops *ops);
/*! \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(3, 10, 0)
#ifdef RHEL_RELEASE_VERSION
#if RHEL_RELEASE_CODE < RHEL_RELEASE_VERSION(6, 5)
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
static inline void *PDE_DATA(const struct inode *inode)
{
return PDE(inode)->data;
}
#endif
#endif
#else
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
static inline void *PDE_DATA(const struct inode *inode)
{
return PDE(inode)->data;
}
#endif
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
#define KERN_CONT ""
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 27)
# ifndef RHEL_RELEASE_VERSION
/* I'm not sure which 5.x release this was backported into. */
static inline int try_wait_for_completion(struct completion *x)
{
unsigned long flags;
int ret = 1;
spin_lock_irqsave(&x->wait.lock, flags);
if (!x->done)
ret = 0;
else
x->done--;
spin_unlock_irqrestore(&x->wait.lock, flags);
return ret;
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)
#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>
static inline struct proc_dir_entry *proc_create_data(const char *name,
mode_t mode,
struct proc_dir_entry *parent,
const struct file_operations *proc_fops,
void *data)
{
struct proc_dir_entry *pde = create_proc_entry(name, mode, parent);
if (!pde)
return NULL;
pde->proc_fops = proc_fops;
pde->data = data;
return pde;
}
#endif /* CONFIG_PROC_FS */
#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))
#ifdef CONFIG_PCI
#ifndef PCIE_LINK_STATE_L0S
#define PCIE_LINK_STATE_L0S 1
#define PCIE_LINK_STATE_L1 2
#define PCIE_LINK_STATE_CLKPM 4
#endif
#define pci_disable_link_state dahdi_pci_disable_link_state
void dahdi_pci_disable_link_state(struct pci_dev *pdev, int state);
#endif /* CONFIG_PCI */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
#define list_first_entry(ptr, type, member) \
list_entry((ptr)->next, type, member)
#ifndef __packed
#define __packed __attribute__((packed))
#endif
#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 */
#endif /* 2.6.22 */
#endif /* 2.6.25 */
#endif /* 2.6.26 */
#endif /* 2.6.27 */
#endif /* 2.6.31 */
#endif /* 3.10.0 */
#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
struct mutex {
struct semaphore sem;
};
#define DEFINE_MUTEX(name) \
struct mutex name = { \
.sem = __SEMAPHORE_INITIALIZER((name).sem, 1), \
}
#define mutex_lock(_x) down(&(_x)->sem)
#define mutex_unlock(_x) up(&(_x)->sem)
#define mutex_init(_x) sema_init(&(_x)->sem, 1)
#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
/* WARN_ONCE first showed up in the kernel in 2.6.27 but it may have been
* backported. */
#ifndef WARN_ONCE
#define WARN_ONCE(condition, format...) WARN_ON_ONCE(condition)
#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 module_printk(level, fmt, args...) \
printk(level "%s: " fmt, THIS_MODULE->name, ## args)
#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: chan-%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__)
#ifndef pr_fmt
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#endif
#ifndef pr_err
#define pr_err(fmt, ...) \
printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
#endif
#ifndef pr_warning
#define pr_warning(fmt, ...) \
printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#endif
#ifndef pr_warn
#define pr_warn pr_warning
#endif
#ifndef pr_notice
#define pr_notice(fmt, ...) \
printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
#endif
#ifndef pr_info
#define pr_info(fmt, ...) \
printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#endif
/* If KBUILD_MODNAME is not defined in a compilation unit, then the dev_dbg
* macro will not work properly. */
#ifndef KBUILD_MODNAME
#undef dev_dbg
#ifdef DEBUG
#define dev_dbg dev_info
#else
#define dev_dbg(...) do { } while (0)
#endif
#endif
/* 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_ASSIGN BIT(1)
#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__)))
#define dahdi_dev_dbg(bits, dev, fmt, ...) \
((void)((debug & (DAHDI_DBG_ ## bits)) && \
dev_printk(KERN_DEBUG, dev, \
"DBG-%s(%s): " fmt, #bits, __func__, ## __VA_ARGS__)))
#endif /* DAHDI_PRINK_MACROS_USE_debug */
#endif /* _DAHDI_KERNEL_H */
Reference in New Issue View Git Blame Copy Permalink