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dahdi-linux/drivers/dahdi/xpp/card_fxs.c
Oron Peled 63ccf9b7da xpp: remove unused XPD_STATE() "protocol method" 
Folded XPD_STATE() "protocol method" into the card_state() method.
It was only called from these (otherwise empty) methods.

Also it is not a "protocol method" for a very very very long time.

Signed-off-by: Oron Peled <oron@actcom.co.il>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9715 a0bf4364-ded3-4de4-8d8a-66a801d63aff
2011-01-30 18:31:35 +00:00

1628 lines
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/*
* Written by Oron Peled <oron@actcom.co.il>
* Copyright (C) 2004-2006, Xorcom
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include "xpd.h"
#include "xproto.h"
#include "xpp_dahdi.h"
#include "card_fxo.h"
#include "dahdi_debug.h"
#include "xbus-core.h"
static const char rcsid[] = "$Id$";
static DEF_PARM(int, debug, 0, 0644, "Print DBG statements"); /* must be before dahdi_debug.h */
static DEF_PARM_BOOL(reversepolarity, 0, 0644, "Reverse Line Polarity");
static DEF_PARM_BOOL(dtmf_detection, 1, 0644, "Do DTMF detection in hardware");
#ifdef POLL_DIGITAL_INPUTS
static DEF_PARM(uint, poll_digital_inputs, 1000, 0644, "Poll Digital Inputs");
#endif
static DEF_PARM_BOOL(vmwi_ioctl, 1, 0644, "Asterisk support VMWI notification via ioctl");
/* Signaling is opposite (fxo signalling for fxs card) */
#if 1
#define FXS_DEFAULT_SIGCAP (DAHDI_SIG_FXOKS | DAHDI_SIG_FXOLS | DAHDI_SIG_FXOGS)
#else
#define FXS_DEFAULT_SIGCAP (DAHDI_SIG_SF | DAHDI_SIG_EM)
#endif
#define VMWI_TYPE(priv, pos, type) \
((priv)->vmwisetting[pos].vmwi_type & DAHDI_VMWI_ ## type)
#define VMWI_NEON(priv, pos) VMWI_TYPE(priv, pos, HVAC)
#define LINES_DIGI_OUT 2
#define LINES_DIGI_INP 4
enum fxs_leds {
LED_GREEN,
LED_RED,
OUTPUT_RELAY,
};
#define NUM_LEDS 2
/* Shortcuts */
#define SLIC_WRITE 1
#define SLIC_READ 0
#define SLIC_DIRECT_REQUEST(xbus,xpd,port,writing,reg,dL) \
xpp_register_request((xbus), (xpd), (port), (writing), (reg), 0, 0, (dL), 0, 0, 0)
#define SLIC_INDIRECT_REQUEST(xbus,xpd,port,writing,reg,dL,dH) \
xpp_register_request((xbus), (xpd), (port), (writing), 0x1E, 1, (reg), (dL), 1, (dH), 0)
#define VALID_PORT(port) (((port) >= 0 && (port) <= 7) || (port) == PORT_BROADCAST)
#define REG_DIGITAL_IOCTRL 0x06 /* LED and RELAY control */
/* Values of SLIC linefeed control register (0x40) */
enum fxs_state {
FXS_LINE_OPEN = 0x00, /* Open */
FXS_LINE_ACTIVE = 0x01, /* Forward active */
FXS_LINE_OHTRANS = 0x02, /* Forward on-hook transmission */
FXS_LINE_TIPOPEN = 0x03, /* TIP open */
FXS_LINE_RING = 0x04, /* Ringing */
FXS_LINE_REV_ACTIVE = 0x05, /* Reverse active */
FXS_LINE_REV_OHTRANS = 0x06, /* Reverse on-hook transmission */
FXS_LINE_RING_OPEN = 0x07 /* RING open */
};
#define FXS_LINE_POL_ACTIVE ((reversepolarity) ? FXS_LINE_REV_ACTIVE : FXS_LINE_ACTIVE)
#define FXS_LINE_POL_OHTRANS ((reversepolarity) ? FXS_LINE_REV_OHTRANS : FXS_LINE_OHTRANS)
/*
* DTMF detection
*/
#define REG_DTMF_DECODE 0x18 /* 24 - DTMF Decode Status */
#define REG_BATTERY 0x42 /* 66 - Battery Feed Control */
#define REG_BATTERY_BATSL BIT(1) /* Battery Feed Select */
#define REG_LOOPCLOSURE 0x44 /* 68 - Loop Closure/Ring Trip Detect Status */
#define REG_LOOPCLOSURE_ZERO 0xF8 /* Loop Closure zero bits. */
#define REG_LOOPCLOSURE_LCR BIT(0) /* Loop Closure Detect Indicator. */
/*---------------- FXS Protocol Commands ----------------------------------*/
static bool fxs_packet_is_valid(xpacket_t *pack);
static void fxs_packet_dump(const char *msg, xpacket_t *pack);
#ifdef CONFIG_PROC_FS
static int proc_fxs_info_read(char *page, char **start, off_t off, int count, int *eof, void *data);
#ifdef WITH_METERING
static int proc_xpd_metering_write(struct file *file, const char __user *buffer, unsigned long count, void *data);
#endif
#endif
static void start_stop_vm_led(xbus_t *xbus, xpd_t *xpd, lineno_t pos);
#define PROC_REGISTER_FNAME "slics"
#define PROC_FXS_INFO_FNAME "fxs_info"
#ifdef WITH_METERING
#define PROC_METERING_FNAME "metering_gen"
#endif
struct FXS_priv_data {
#ifdef WITH_METERING
struct proc_dir_entry *meteringfile;
#endif
struct proc_dir_entry *fxs_info;
xpp_line_t ledstate[NUM_LEDS]; /* 0 - OFF, 1 - ON */
xpp_line_t ledcontrol[NUM_LEDS]; /* 0 - OFF, 1 - ON */
xpp_line_t search_fsk_pattern;
xpp_line_t found_fsk_pattern;
xpp_line_t update_offhook_state;
xpp_line_t want_dtmf_events; /* what dahdi want */
xpp_line_t want_dtmf_mute; /* what dahdi want */
xpp_line_t prev_key_down; /* DTMF down sets the bit */
struct timeval prev_key_time[CHANNELS_PERXPD];
int led_counter[NUM_LEDS][CHANNELS_PERXPD];
int ohttimer[CHANNELS_PERXPD];
#define OHT_TIMER 6000 /* How long after RING to retain OHT */
enum fxs_state idletxhookstate[CHANNELS_PERXPD]; /* IDLE changing hook state */
enum fxs_state lasttxhook[CHANNELS_PERXPD];
struct dahdi_vmwi_info vmwisetting[CHANNELS_PERXPD];
};
/*
* LED counter values:
* n>1 : BLINK every n'th tick
*/
#define LED_COUNTER(priv,pos,color) ((priv)->led_counter[color][pos])
#define IS_BLINKING(priv,pos,color) (LED_COUNTER(priv,pos,color) > 0)
#define MARK_BLINK(priv,pos,color,t) ((priv)->led_counter[color][pos] = (t))
#define MARK_OFF(priv,pos,color) do { BIT_CLR((priv)->ledcontrol[color],(pos)); MARK_BLINK((priv),(pos),(color),0); } while(0)
#define MARK_ON(priv,pos,color) do { BIT_SET((priv)->ledcontrol[color],(pos)); MARK_BLINK((priv),(pos),(color),0); } while(0)
#define LED_BLINK_RING (1000/8) /* in ticks */
/*---------------- FXS: Static functions ----------------------------------*/
static int linefeed_control(xbus_t *xbus, xpd_t *xpd, lineno_t chan, enum fxs_state value)
{
struct FXS_priv_data *priv;
priv = xpd->priv;
LINE_DBG(SIGNAL, xpd, chan, "value=0x%02X\n", value);
priv->lasttxhook[chan] = value;
return SLIC_DIRECT_REQUEST(xbus, xpd, chan, SLIC_WRITE, 0x40, value);
}
static int do_chan_power(xbus_t *xbus, xpd_t *xpd, lineno_t chan, bool on)
{
int value = (on) ? REG_BATTERY_BATSL : 0x00;
BUG_ON(!xbus);
BUG_ON(!xpd);
LINE_DBG(SIGNAL, xpd, chan, "%s\n", (on) ? "up" : "down");
return SLIC_DIRECT_REQUEST(xbus, xpd, chan, SLIC_WRITE, REG_BATTERY, value);
}
static void vmwi_search(xpd_t *xpd, lineno_t pos, bool on)
{
struct FXS_priv_data *priv;
priv = xpd->priv;
BUG_ON(!xpd);
if (VMWI_NEON(priv, pos) && on) {
LINE_DBG(SIGNAL, xpd, pos, "START\n");
BIT_SET(priv->search_fsk_pattern, pos);
} else {
LINE_DBG(SIGNAL, xpd, pos, "STOP\n");
BIT_CLR(priv->search_fsk_pattern, pos);
}
}
/*
* LED and RELAY control is done via SLIC register 0x06:
* 7 6 5 4 3 2 1 0
* +-----+-----+-----+-----+-----+-----+-----+-----+
* | M2 | M1 | M3 | C2 | O1 | O3 | C1 | C3 |
* +-----+-----+-----+-----+-----+-----+-----+-----+
*
* Cn - Control bit (control one digital line)
* On - Output bit (program a digital line for output)
* Mn - Mask bit (only the matching output control bit is affected)
*
* C3 - OUTPUT RELAY (0 - OFF, 1 - ON)
* C1 - GREEN LED (0 - OFF, 1 - ON)
* O3 - Output RELAY (this line is output)
* O1 - Output GREEN (this line is output)
* C2 - RED LED (0 - OFF, 1 - ON)
* M3 - Mask RELAY. (1 - C3 effect the OUTPUT RELAY)
* M2 - Mask RED. (1 - C2 effect the RED LED)
* M1 - Mask GREEN. (1 - C1 effect the GREEN LED)
*
* The OUTPUT RELAY (actually a relay out) is connected to line 0 and 4 only.
*/
// GREEN RED OUTPUT RELAY
static const int led_register_mask[] = { BIT(7), BIT(6), BIT(5) };
static const int led_register_vals[] = { BIT(4), BIT(1), BIT(0) };
/*
* pos can be:
* - A line number
* - ALL_LINES. This is not valid anymore since 8-Jan-2007.
*/
static int do_led(xpd_t *xpd, lineno_t chan, byte which, bool on)
{
int ret = 0;
struct FXS_priv_data *priv;
int value;
xbus_t *xbus;
BUG_ON(!xpd);
BUG_ON(chan == ALL_LINES);
xbus = xpd->xbus;
priv = xpd->priv;
which = which % NUM_LEDS;
if(IS_SET(PHONEDEV(xpd).digital_outputs, chan) || IS_SET(PHONEDEV(xpd).digital_inputs, chan))
goto out;
if(chan == PORT_BROADCAST) {
priv->ledstate[which] = (on) ? ~0 : 0;
} else {
if(on) {
BIT_SET(priv->ledstate[which], chan);
} else {
BIT_CLR(priv->ledstate[which], chan);
}
}
LINE_DBG(LEDS, xpd, chan, "LED: which=%d -- %s\n", which, (on) ? "on" : "off");
value = BIT(2) | BIT(3);
value |= ((BIT(5) | BIT(6) | BIT(7)) & ~led_register_mask[which]);
if(on)
value |= led_register_vals[which];
ret = SLIC_DIRECT_REQUEST(xbus, xpd, chan, SLIC_WRITE,
REG_DIGITAL_IOCTRL, value);
out:
return ret;
}
static void handle_fxs_leds(xpd_t *xpd)
{
int i;
const enum fxs_leds colors[] = { LED_GREEN, LED_RED };
enum fxs_leds color;
unsigned int timer_count;
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
timer_count = xpd->timer_count;
for(color = 0; color < ARRAY_SIZE(colors); color++) {
for_each_line(xpd, i) {
if(IS_SET(PHONEDEV(xpd).digital_outputs | PHONEDEV(xpd).digital_inputs, i))
continue;
if((xpd->blink_mode & BIT(i)) || IS_BLINKING(priv, i, color)) { // Blinking
int mod_value = LED_COUNTER(priv, i, color);
if(!mod_value)
mod_value = DEFAULT_LED_PERIOD; /* safety value */
// led state is toggled
if((timer_count % mod_value) == 0) {
LINE_DBG(LEDS, xpd, i, "ledstate=%s\n", (IS_SET(priv->ledstate[color], i))?"ON":"OFF");
if(!IS_SET(priv->ledstate[color], i)) {
do_led(xpd, i, color, 1);
} else {
do_led(xpd, i, color, 0);
}
}
} else if(IS_SET(priv->ledcontrol[color] & ~priv->ledstate[color], i)) {
do_led(xpd, i, color, 1);
} else if(IS_SET(~priv->ledcontrol[color] & priv->ledstate[color], i)) {
do_led(xpd, i, color, 0);
}
}
}
}
static void restore_leds(xpd_t *xpd)
{
struct FXS_priv_data *priv;
int i;
priv = xpd->priv;
for_each_line(xpd, i) {
if(IS_OFFHOOK(xpd, i))
MARK_ON(priv, i, LED_GREEN);
else
MARK_OFF(priv, i, LED_GREEN);
}
}
#ifdef WITH_METERING
static int metering_gen(xpd_t *xpd, lineno_t chan, bool on)
{
byte value = (on) ? 0x94 : 0x00;
LINE_DBG(SIGNAL, xpd, chan, "METERING Generate: %s\n", (on)?"ON":"OFF");
return SLIC_DIRECT_REQUEST(xpd->xbus, xpd, chan, SLIC_WRITE, 0x23, value);
}
#endif
/*---------------- FXS: Methods -------------------------------------------*/
static void fxs_proc_remove(xbus_t *xbus, xpd_t *xpd)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
#ifdef CONFIG_PROC_FS
#ifdef WITH_METERING
if(priv->meteringfile) {
XPD_DBG(PROC, xpd, "Removing xpd metering tone file\n");
priv->meteringfile->data = NULL;
remove_proc_entry(PROC_METERING_FNAME, xpd->proc_xpd_dir);
priv->meteringfile = NULL;
}
#endif
if(priv->fxs_info) {
XPD_DBG(PROC, xpd, "Removing xpd FXS_INFO file\n");
remove_proc_entry(PROC_FXS_INFO_FNAME, xpd->proc_xpd_dir);
priv->fxs_info = NULL;
}
#endif
}
static int fxs_proc_create(xbus_t *xbus, xpd_t *xpd)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
#ifdef CONFIG_PROC_FS
XPD_DBG(PROC, xpd, "Creating FXS_INFO file\n");
priv->fxs_info = create_proc_read_entry(PROC_FXS_INFO_FNAME, 0444, xpd->proc_xpd_dir, proc_fxs_info_read, xpd);
if(!priv->fxs_info) {
XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_FXS_INFO_FNAME);
fxs_proc_remove(xbus, xpd);
return -EINVAL;
}
SET_PROC_DIRENTRY_OWNER(priv->fxs_info);
#ifdef WITH_METERING
XPD_DBG(PROC, xpd, "Creating Metering tone file\n");
priv->meteringfile = create_proc_entry(PROC_METERING_FNAME, 0200, xpd->proc_xpd_dir);
if(!priv->meteringfile) {
XPD_ERR(xpd, "Failed to create proc file '%s'\n", PROC_METERING_FNAME);
fxs_proc_remove(xbus, xpd);
return -EINVAL;
}
SET_PROC_DIRENTRY_OWNER(priv->meteringfile);
priv->meteringfile->write_proc = proc_xpd_metering_write;
priv->meteringfile->read_proc = NULL;
priv->meteringfile->data = xpd;
#endif
#endif
return 0;
}
static xpd_t *FXS_card_new(xbus_t *xbus, int unit, int subunit, const xproto_table_t *proto_table,
byte subtype, int subunits, int subunit_ports, bool to_phone)
{
xpd_t *xpd = NULL;
int channels;
int regular_channels;
struct FXS_priv_data *priv;
int i;
if(!to_phone) {
XBUS_NOTICE(xbus,
"XPD=%d%d: try to instanciate FXS with reverse direction\n",
unit, subunit);
return NULL;
}
if(subtype == 2)
regular_channels = min(6, subunit_ports);
else
regular_channels = min(8, subunit_ports);
channels = regular_channels;
if(unit == 0)
channels += 6; /* 2 DIGITAL OUTPUTS, 4 DIGITAL INPUTS */
xpd = xpd_alloc(xbus, unit, subunit, subtype, subunits, sizeof(struct FXS_priv_data), proto_table, channels);
if(!xpd)
return NULL;
if(unit == 0) {
XBUS_DBG(GENERAL, xbus, "First XPD detected. Initialize digital outputs/inputs\n");
PHONEDEV(xpd).digital_outputs = BITMASK(LINES_DIGI_OUT) << regular_channels;
PHONEDEV(xpd).digital_inputs = BITMASK(LINES_DIGI_INP) << (regular_channels + LINES_DIGI_OUT);
}
PHONEDEV(xpd).direction = TO_PHONE;
xpd->type_name = "FXS";
if(fxs_proc_create(xbus, xpd) < 0)
goto err;
priv = xpd->priv;
for_each_line(xpd, i) {
priv->idletxhookstate[i] = FXS_LINE_POL_ACTIVE;
}
return xpd;
err:
xpd_free(xpd);
return NULL;
}
static int FXS_card_init(xbus_t *xbus, xpd_t *xpd)
{
struct FXS_priv_data *priv;
int ret = 0;
int i;
BUG_ON(!xpd);
priv = xpd->priv;
/*
* Setup ring timers
*/
/* Software controled ringing (for CID) */
ret = SLIC_DIRECT_REQUEST(xbus, xpd, PORT_BROADCAST, SLIC_WRITE, 0x22, 0x00); /* Ringing Oscilator Control */
if(ret < 0)
goto err;
for_each_line(xpd, i) {
linefeed_control(xbus, xpd, i, FXS_LINE_POL_ACTIVE);
}
XPD_DBG(GENERAL, xpd, "done\n");
for_each_line(xpd, i) {
do_led(xpd, i, LED_GREEN, 0);
do_led(xpd, i, LED_RED, 0);
}
for_each_line(xpd, i) {
do_led(xpd, i, LED_GREEN, 1);
msleep(50);
}
for_each_line(xpd, i) {
do_led(xpd, i, LED_GREEN, 0);
msleep(50);
}
restore_leds(xpd);
CALL_PHONE_METHOD(card_pcm_recompute, xpd, 0);
/*
* We should query our offhook state long enough time after we
* set the linefeed_control()
* So we do this after the LEDs
*/
for_each_line(xpd, i) {
if(IS_SET(PHONEDEV(xpd).digital_outputs | PHONEDEV(xpd).digital_inputs, i))
continue;
SLIC_DIRECT_REQUEST(xbus, xpd, i, SLIC_READ, REG_LOOPCLOSURE, 0);
}
return 0;
err:
fxs_proc_remove(xbus, xpd);
XPD_ERR(xpd, "Failed initializing registers (%d)\n", ret);
return ret;
}
static int FXS_card_remove(xbus_t *xbus, xpd_t *xpd)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
XPD_DBG(GENERAL, xpd, "\n");
fxs_proc_remove(xbus, xpd);
return 0;
}
static int FXS_card_dahdi_preregistration(xpd_t *xpd, bool on)
{
xbus_t *xbus;
struct FXS_priv_data *priv;
int i;
BUG_ON(!xpd);
xbus = xpd->xbus;
BUG_ON(!xbus);
priv = xpd->priv;
BUG_ON(!priv);
XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off");
PHONEDEV(xpd).span.spantype = "FXS";
for_each_line(xpd, i) {
struct dahdi_chan *cur_chan = XPD_CHAN(xpd, i);
XPD_DBG(GENERAL, xpd, "setting FXS channel %d\n", i);
if(IS_SET(PHONEDEV(xpd).digital_outputs, i)) {
snprintf(cur_chan->name, MAX_CHANNAME, "XPP_OUT/%02d/%1d%1d/%d",
xbus->num, xpd->addr.unit, xpd->addr.subunit, i);
} else if(IS_SET(PHONEDEV(xpd).digital_inputs, i)) {
snprintf(cur_chan->name, MAX_CHANNAME, "XPP_IN/%02d/%1d%1d/%d",
xbus->num, xpd->addr.unit, xpd->addr.subunit, i);
} else {
snprintf(cur_chan->name, MAX_CHANNAME, "XPP_FXS/%02d/%1d%1d/%d",
xbus->num, xpd->addr.unit, xpd->addr.subunit, i);
}
cur_chan->chanpos = i + 1;
cur_chan->pvt = xpd;
cur_chan->sigcap = FXS_DEFAULT_SIGCAP;
if (!vmwi_ioctl) {
/* Old asterisk, assume default VMWI type */
priv->vmwisetting[i].vmwi_type = DAHDI_VMWI_HVAC;
}
}
for_each_line(xpd, i) {
MARK_ON(priv, i, LED_GREEN);
msleep(4);
MARK_ON(priv, i, LED_RED);
}
return 0;
}
static int FXS_card_dahdi_postregistration(xpd_t *xpd, bool on)
{
xbus_t *xbus;
struct FXS_priv_data *priv;
int i;
BUG_ON(!xpd);
xbus = xpd->xbus;
BUG_ON(!xbus);
priv = xpd->priv;
BUG_ON(!priv);
XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off");
for_each_line(xpd, i) {
MARK_OFF(priv, i, LED_GREEN);
msleep(2);
MARK_OFF(priv, i, LED_RED);
msleep(2);
}
restore_leds(xpd);
return 0;
}
/*
* Called with XPD spinlocked
*/
static void __do_mute_dtmf(xpd_t *xpd, int pos, bool muteit)
{
LINE_DBG(SIGNAL, xpd, pos, "%s\n", (muteit) ? "MUTE" : "UNMUTE");
if(muteit)
BIT_SET(PHONEDEV(xpd).mute_dtmf, pos);
else
BIT_CLR(PHONEDEV(xpd).mute_dtmf, pos);
CALL_PHONE_METHOD(card_pcm_recompute, xpd, 0); /* already spinlocked */
}
static int set_vm_led_mode(xbus_t *xbus, xpd_t *xpd, int pos,
unsigned int msg_waiting)
{
int ret = 0;
struct FXS_priv_data *priv;
BUG_ON(!xbus);
BUG_ON(!xpd);
priv = xpd->priv;
if (VMWI_NEON(priv, pos) && msg_waiting) {
/* A write to register 0x40 will now turn on/off the VM led */
LINE_DBG(SIGNAL, xpd, pos, "NEON\n");
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x16, 0xE8, 0x03);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x15, 0xEF, 0x7B);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x14, 0x9F, 0x00);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x22, 0x19);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x30, 0xE0);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x31, 0x01);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x32, 0xF0);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x33, 0x05);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x1D, 0x00, 0x46);
} else {
/* A write to register 0x40 will now turn on/off the ringer */
LINE_DBG(SIGNAL, xpd, pos, "RINGER\n");
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x16, 0x00, 0x00);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x15, 0x77, 0x01);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x14, 0xFD, 0x7E);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x22, 0x00);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x30, 0x00);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x31, 0x00);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x32, 0x00);
ret += SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x33, 0x00);
ret += SLIC_INDIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x1D, 0x00, 0x36);
}
return (ret ? -EPROTO : 0);
}
static void start_stop_vm_led(xbus_t *xbus, xpd_t *xpd, lineno_t pos)
{
struct FXS_priv_data *priv;
unsigned int msgs;
BUG_ON(!xpd);
if (IS_SET(PHONEDEV(xpd).digital_outputs | PHONEDEV(xpd).digital_inputs, pos))
return;
priv = xpd->priv;
msgs = PHONEDEV(xpd).msg_waiting[pos];
LINE_DBG(SIGNAL, xpd, pos, "%s\n", (msgs) ? "ON" : "OFF");
set_vm_led_mode(xbus, xpd, pos, msgs);
do_chan_power(xbus, xpd, pos, msgs > 0);
linefeed_control(xbus, xpd, pos, (msgs > 0) ?
FXS_LINE_RING : priv->idletxhookstate[pos]);
}
static int relay_out(xpd_t *xpd, int pos, bool on)
{
int value;
int which = pos;
int relay_channels[] = { 0, 4 };
BUG_ON(!xpd);
/* map logical position to output port number (0/1) */
which -= (xpd->subtype == 2) ? 6 : 8;
LINE_DBG(SIGNAL, xpd, pos, "which=%d -- %s\n", which, (on) ? "on" : "off");
which = which % ARRAY_SIZE(relay_channels);
value = BIT(2) | BIT(3);
value |= ((BIT(5) | BIT(6) | BIT(7)) & ~led_register_mask[OUTPUT_RELAY]);
if(on)
value |= led_register_vals[OUTPUT_RELAY];
return SLIC_DIRECT_REQUEST(xpd->xbus, xpd, relay_channels[which],
SLIC_WRITE, REG_DIGITAL_IOCTRL, value);
}
static int send_ring(xpd_t *xpd, lineno_t chan, bool on)
{
int ret = 0;
xbus_t *xbus;
struct FXS_priv_data *priv;
enum fxs_state value = (on) ? FXS_LINE_RING : FXS_LINE_POL_ACTIVE;
BUG_ON(!xpd);
xbus = xpd->xbus;
BUG_ON(!xbus);
LINE_DBG(SIGNAL, xpd, chan, "%s\n", (on)?"on":"off");
priv = xpd->priv;
set_vm_led_mode(xbus, xpd, chan, 0);
do_chan_power(xbus, xpd, chan, on); // Power up (for ring)
ret = linefeed_control(xbus, xpd, chan, value);
if(on) {
MARK_BLINK(priv, chan, LED_GREEN, LED_BLINK_RING);
} else {
if(IS_BLINKING(priv, chan, LED_GREEN))
MARK_BLINK(priv, chan, LED_GREEN, 0);
}
return ret;
}
static int FXS_card_hooksig(xpd_t *xpd, int pos, enum dahdi_txsig txsig)
{
struct FXS_priv_data *priv;
int ret = 0;
struct dahdi_chan *chan = NULL;
enum fxs_state txhook;
unsigned long flags;
LINE_DBG(SIGNAL, xpd, pos, "%s\n", txsig2str(txsig));
priv = xpd->priv;
BUG_ON(PHONEDEV(xpd).direction != TO_PHONE);
if (IS_SET(PHONEDEV(xpd).digital_inputs, pos)) {
LINE_DBG(SIGNAL, xpd, pos, "Ignoring signal sent to digital input line\n");
return 0;
}
if(SPAN_REGISTERED(xpd))
chan = XPD_CHAN(xpd, pos);
switch(txsig) {
case DAHDI_TXSIG_ONHOOK:
spin_lock_irqsave(&xpd->lock, flags);
PHONEDEV(xpd).ringing[pos] = 0;
oht_pcm(xpd, pos, 0);
vmwi_search(xpd, pos, 0);
BIT_CLR(priv->want_dtmf_events, pos);
BIT_CLR(priv->want_dtmf_mute, pos);
__do_mute_dtmf(xpd, pos, 0);
spin_unlock_irqrestore(&xpd->lock, flags);
if(IS_SET(PHONEDEV(xpd).digital_outputs, pos)) {
LINE_DBG(SIGNAL, xpd, pos, "%s -> digital output OFF\n", txsig2str(txsig));
ret = relay_out(xpd, pos, 0);
return ret;
}
if (priv->lasttxhook[pos] == FXS_LINE_OPEN) {
/*
* Restore state after KEWL hangup.
*/
LINE_DBG(SIGNAL, xpd, pos, "KEWL STOP\n");
linefeed_control(xpd->xbus, xpd, pos, FXS_LINE_POL_ACTIVE);
if(IS_OFFHOOK(xpd, pos))
MARK_ON(priv, pos, LED_GREEN);
}
ret = send_ring(xpd, pos, 0); // RING off
if (!IS_OFFHOOK(xpd, pos))
start_stop_vm_led(xpd->xbus, xpd, pos);
txhook = priv->lasttxhook[pos];
if(chan) {
switch(chan->sig) {
case DAHDI_SIG_EM:
case DAHDI_SIG_FXOKS:
case DAHDI_SIG_FXOLS:
txhook = priv->idletxhookstate[pos];
break;
case DAHDI_SIG_FXOGS:
txhook = FXS_LINE_TIPOPEN;
break;
}
}
ret = linefeed_control(xpd->xbus, xpd, pos, txhook);
break;
case DAHDI_TXSIG_OFFHOOK:
if(IS_SET(PHONEDEV(xpd).digital_outputs, pos)) {
LINE_NOTICE(xpd, pos, "%s -> Is digital output. Ignored\n", txsig2str(txsig));
return -EINVAL;
}
txhook = priv->lasttxhook[pos];
if(PHONEDEV(xpd).ringing[pos]) {
oht_pcm(xpd, pos, 1);
txhook = FXS_LINE_OHTRANS;
}
PHONEDEV(xpd).ringing[pos] = 0;
if(chan) {
switch(chan->sig) {
case DAHDI_SIG_EM:
txhook = FXS_LINE_POL_ACTIVE;
break;
default:
txhook = priv->idletxhookstate[pos];
break;
}
}
ret = linefeed_control(xpd->xbus, xpd, pos, txhook);
break;
case DAHDI_TXSIG_START:
PHONEDEV(xpd).ringing[pos] = 1;
oht_pcm(xpd, pos, 0);
vmwi_search(xpd, pos, 0);
if(IS_SET(PHONEDEV(xpd).digital_outputs, pos)) {
LINE_DBG(SIGNAL, xpd, pos, "%s -> digital output ON\n", txsig2str(txsig));
ret = relay_out(xpd, pos, 1);
return ret;
}
ret = send_ring(xpd, pos, 1); // RING on
break;
case DAHDI_TXSIG_KEWL:
if(IS_SET(PHONEDEV(xpd).digital_outputs, pos)) {
LINE_DBG(SIGNAL, xpd, pos, "%s -> Is digital output. Ignored\n", txsig2str(txsig));
return -EINVAL;
}
linefeed_control(xpd->xbus, xpd, pos, FXS_LINE_OPEN);
MARK_OFF(priv, pos, LED_GREEN);
break;
default:
XPD_NOTICE(xpd, "%s: Can't set tx state to %s (%d)\n",
__FUNCTION__, txsig2str(txsig), txsig);
ret = -EINVAL;
}
return ret;
}
static int set_vmwi(xpd_t *xpd, int pos, unsigned long arg)
{
struct FXS_priv_data *priv;
struct dahdi_vmwi_info vmwisetting;
const int vmwi_flags = DAHDI_VMWI_LREV | DAHDI_VMWI_HVDC
| DAHDI_VMWI_HVAC;
priv = xpd->priv;
BUG_ON(!priv);
if (copy_from_user(&vmwisetting, (__user void *)arg,
sizeof(vmwisetting)))
return -EFAULT;
if ((vmwisetting.vmwi_type & ~vmwi_flags) != 0) {
LINE_NOTICE(xpd, pos, "Bad DAHDI_VMWI_CONFIG: 0x%X\n",
vmwisetting.vmwi_type);
return -EINVAL;
}
LINE_DBG(SIGNAL, xpd, pos,
"DAHDI_VMWI_CONFIG: 0x%X\n",
vmwisetting.vmwi_type);
if (VMWI_TYPE(priv, pos, LREV)) {
LINE_NOTICE(xpd, pos,
"%s: VMWI(lrev) is not implemented yet. Ignored.\n",
__func__);
}
if (VMWI_TYPE(priv, pos, HVDC)) {
LINE_NOTICE(xpd, pos,
"%s: VMWI(hvdc) is not implemented yet. Ignored.\n",
__func__);
}
if (VMWI_TYPE(priv, pos, HVAC)) {
; /* VMWI_NEON */
}
if (priv->vmwisetting[pos].vmwi_type == 0) {
; /* Disable VMWI */
}
priv->vmwisetting[pos] = vmwisetting;
set_vm_led_mode(xpd->xbus, xpd, pos, PHONEDEV(xpd).msg_waiting[pos]);
return 0;
}
/*
* Private ioctl()
* We don't need it now, since we detect vmwi via FSK patterns
*/
static int FXS_card_ioctl(xpd_t *xpd, int pos, unsigned int cmd, unsigned long arg)
{
struct FXS_priv_data *priv;
xbus_t *xbus;
int val;
unsigned long flags;
BUG_ON(!xpd);
priv = xpd->priv;
BUG_ON(!priv);
xbus = xpd->xbus;
BUG_ON(!xbus);
if(!XBUS_IS(xbus, READY))
return -ENODEV;
if (pos < 0 || pos >= PHONEDEV(xpd).channels) {
XPD_NOTICE(xpd, "Bad channel number %d in %s(), cmd=%u\n",
pos, __FUNCTION__, cmd);
return -EINVAL;
}
switch (cmd) {
case DAHDI_ONHOOKTRANSFER:
if (get_user(val, (int __user *)arg))
return -EFAULT;
LINE_DBG(SIGNAL, xpd, pos, "DAHDI_ONHOOKTRANSFER (%d millis)\n", val);
if (IS_SET(PHONEDEV(xpd).digital_inputs | PHONEDEV(xpd).digital_outputs, pos))
return 0; /* Nothing to do */
oht_pcm(xpd, pos, 1); /* Get ready of VMWI FSK tones */
if(priv->lasttxhook[pos] == FXS_LINE_POL_ACTIVE) {
priv->ohttimer[pos] = val;
priv->idletxhookstate[pos] = FXS_LINE_POL_OHTRANS;
vmwi_search(xpd, pos, 1);
CALL_PHONE_METHOD(card_pcm_recompute, xpd, priv->search_fsk_pattern);
LINE_DBG(SIGNAL, xpd, pos, "Start OHT_TIMER. wanted_pcm_mask=0x%X\n", PHONEDEV(xpd).wanted_pcm_mask);
}
if (VMWI_NEON(priv, pos) && !IS_OFFHOOK(xpd, pos))
start_stop_vm_led(xbus, xpd, pos);
return 0;
case DAHDI_TONEDETECT:
if (get_user(val, (int __user *)arg))
return -EFAULT;
LINE_DBG(SIGNAL, xpd, pos, "DAHDI_TONEDETECT: %s %s (dtmf_detection=%s)\n",
(val & DAHDI_TONEDETECT_ON) ? "ON" : "OFF",
(val & DAHDI_TONEDETECT_MUTE) ? "MUTE" : "NO-MUTE",
(dtmf_detection ? "YES" : "NO"));
if(!dtmf_detection) {
spin_lock_irqsave(&xpd->lock, flags);
if(IS_SET(priv->want_dtmf_events, pos)) {
/* Detection mode changed: Disable DTMF interrupts */
SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x17, 0);
}
BIT_CLR(priv->want_dtmf_events, pos);
BIT_CLR(priv->want_dtmf_mute, pos);
__do_mute_dtmf(xpd, pos, 0);
spin_unlock_irqrestore(&xpd->lock, flags);
return -ENOTTY;
}
/*
* During natively bridged calls, Asterisk
* will request one of the sides to stop sending
* dtmf events. Check the requested state.
*/
spin_lock_irqsave(&xpd->lock, flags);
if(val & DAHDI_TONEDETECT_ON) {
if(!IS_SET(priv->want_dtmf_events, pos)) {
/* Detection mode changed: Enable DTMF interrupts */
LINE_DBG(SIGNAL, xpd, pos,
"DAHDI_TONEDETECT: Enable Hardware DTMF\n");
SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x17, 1);
}
BIT_SET(priv->want_dtmf_events, pos);
} else {
if(IS_SET(priv->want_dtmf_events, pos)) {
/* Detection mode changed: Disable DTMF interrupts */
LINE_DBG(SIGNAL, xpd, pos,
"DAHDI_TONEDETECT: Disable Hardware DTMF\n");
SLIC_DIRECT_REQUEST(xbus, xpd, pos, SLIC_WRITE, 0x17, 0);
}
BIT_CLR(priv->want_dtmf_events, pos);
}
if(val & DAHDI_TONEDETECT_MUTE) {
BIT_SET(priv->want_dtmf_mute, pos);
} else {
BIT_CLR(priv->want_dtmf_mute, pos);
__do_mute_dtmf(xpd, pos, 0);
}
spin_unlock_irqrestore(&xpd->lock, flags);
return 0;
case DAHDI_SETPOLARITY:
if (get_user(val, (int __user *)arg))
return -EFAULT;
/* Can't change polarity while ringing or when open */
if (priv->lasttxhook[pos] == FXS_LINE_RING || priv->lasttxhook[pos] == FXS_LINE_OPEN) {
LINE_ERR(xpd, pos, "DAHDI_SETPOLARITY: %s Cannot change when lasttxhook=0x%X\n",
(val)?"ON":"OFF", priv->lasttxhook[pos]);
return -EINVAL;
}
LINE_DBG(SIGNAL, xpd, pos, "DAHDI_SETPOLARITY: %s\n", (val)?"ON":"OFF");
if ((val && !reversepolarity) || (!val && reversepolarity))
priv->lasttxhook[pos] |= FXS_LINE_RING;
else
priv->lasttxhook[pos] &= ~FXS_LINE_RING;
linefeed_control(xbus, xpd, pos, priv->lasttxhook[pos]);
return 0;
case DAHDI_VMWI_CONFIG:
if (set_vmwi(xpd, pos, arg) < 0)
return -EINVAL;
return 0;
case DAHDI_VMWI: /* message-waiting led control */
if (get_user(val, (int __user *)arg))
return -EFAULT;
if(!vmwi_ioctl) {
static bool notified = 0;
if(!notified++)
LINE_NOTICE(xpd, pos,
"Got DAHDI_VMWI notification but vmwi_ioctl parameter is off. Ignoring.\n");
return 0;
}
/* Digital inputs/outputs don't have VM leds */
if (IS_SET(PHONEDEV(xpd).digital_inputs | PHONEDEV(xpd).digital_outputs, pos))
return 0;
PHONEDEV(xpd).msg_waiting[pos] = val;
LINE_DBG(SIGNAL, xpd, pos, "DAHDI_VMWI: %s\n",
(val) ? "yes" : "no");
return 0;
default:
report_bad_ioctl(THIS_MODULE->name, xpd, pos, cmd);
}
return -ENOTTY;
}
static int FXS_card_open(xpd_t *xpd, lineno_t chan)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
if(IS_OFFHOOK(xpd, chan))
LINE_NOTICE(xpd, chan, "Already offhook during open. OK.\n");
else
LINE_DBG(SIGNAL, xpd, chan, "is onhook\n");
/*
* Delegate updating dahdi to FXS_card_tick():
* The problem is that dahdi_hooksig() is spinlocking the channel and
* we are called by dahdi with the spinlock already held on the
* same channel.
*/
BIT_SET(priv->update_offhook_state, chan);
return 0;
}
static int FXS_card_close(xpd_t *xpd, lineno_t chan)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
LINE_DBG(GENERAL, xpd, chan, "\n");
priv = xpd->priv;
priv->idletxhookstate[chan] = FXS_LINE_POL_ACTIVE;
return 0;
}
#ifdef POLL_DIGITAL_INPUTS
/*
* INPUT polling is done via SLIC register 0x06 (same as LEDS):
* 7 6 5 4 3 2 1 0
* +-----+-----+-----+-----+-----+-----+-----+-----+
* | I1 | I3 | | | I2 | I4 | | |
* +-----+-----+-----+-----+-----+-----+-----+-----+
*
*/
static int input_channels[] = { 6, 7, 2, 3 }; // Slic numbers of input relays
static void poll_inputs(xpd_t *xpd)
{
int i;
BUG_ON(xpd->xbus_idx != 0); // Only unit #0 has digital inputs
for(i = 0; i < ARRAY_SIZE(input_channels); i++) {
byte pos = input_channels[i];
SLIC_DIRECT_REQUEST(xpd->xbus, xpd, pos, SLIC_READ, 0x06, 0);
}
}
#endif
static void handle_linefeed(xpd_t *xpd)
{
struct FXS_priv_data *priv;
int i;
BUG_ON(!xpd);
priv = xpd->priv;
BUG_ON(!priv);
for_each_line(xpd, i) {
if (priv->lasttxhook[i] == FXS_LINE_RING) {
/* RINGing, prepare for OHT */
priv->ohttimer[i] = OHT_TIMER;
priv->idletxhookstate[i] = FXS_LINE_POL_OHTRANS;
} else {
if (priv->ohttimer[i]) {
priv->ohttimer[i]--;
if (!priv->ohttimer[i]) {
LINE_DBG(SIGNAL, xpd, i, "ohttimer expired\n");
priv->idletxhookstate[i] = FXS_LINE_POL_ACTIVE;
oht_pcm(xpd, i, 0);
vmwi_search(xpd, i, 0);
if (priv->lasttxhook[i] == FXS_LINE_POL_OHTRANS) {
/* Apply the change if appropriate */
linefeed_control(xpd->xbus, xpd, i, FXS_LINE_POL_ACTIVE);
}
}
}
}
}
}
/*
* Optimized memcmp() like function. Only test for equality (true/false).
* This optimization reduced the detect_vmwi() runtime by a factor of 3.
*/
static inline bool mem_equal(const char a[], const char b[], size_t len)
{
int i;
for(i = 0; i < len; i++)
if(a[i] != b[i])
return 0;
return 1;
}
/*
* Detect Voice Mail Waiting Indication
*/
static void detect_vmwi(xpd_t *xpd)
{
struct FXS_priv_data *priv;
xbus_t *xbus;
static const byte FSK_COMMON_PATTERN[] = { 0xA8, 0x49, 0x22, 0x3B, 0x9F, 0xFF, 0x1F, 0xBB };
static const byte FSK_ON_PATTERN[] = { 0xA2, 0x2C, 0x1F, 0x2C, 0xBB, 0xA1, 0xA5, 0xFF };
static const byte FSK_OFF_PATTERN[] = { 0xA2, 0x2C, 0x28, 0xA5, 0xB1, 0x21, 0x49, 0x9F };
int i;
xpp_line_t ignore_mask;
BUG_ON(!xpd);
xbus = xpd->xbus;
priv = xpd->priv;
BUG_ON(!priv);
ignore_mask =
PHONEDEV(xpd).offhook_state |
~(PHONEDEV(xpd).oht_pcm_pass) |
~(priv->search_fsk_pattern) |
PHONEDEV(xpd).digital_inputs |
PHONEDEV(xpd).digital_outputs;
for_each_line(xpd, i) {
struct dahdi_chan *chan = XPD_CHAN(xpd, i);
byte *writechunk = chan->writechunk;
if(IS_SET(ignore_mask, i))
continue;
#if 0
if(writechunk[0] != 0x7F && writechunk[0] != 0) {
int j;
LINE_DBG(GENERAL, xpd, pos, "MSG:");
for(j = 0; j < DAHDI_CHUNKSIZE; j++) {
if(debug)
printk(" %02X", writechunk[j]);
}
if(debug)
printk("\n");
}
#endif
if(unlikely(mem_equal(writechunk, FSK_COMMON_PATTERN, DAHDI_CHUNKSIZE))) {
LINE_DBG(SIGNAL, xpd, i, "Found common FSK pattern. Start looking for ON/OFF patterns.\n");
BIT_SET(priv->found_fsk_pattern, i);
} else if(unlikely(IS_SET(priv->found_fsk_pattern, i))) {
BIT_CLR(priv->found_fsk_pattern, i);
oht_pcm(xpd, i, 0);
if(unlikely(mem_equal(writechunk, FSK_ON_PATTERN, DAHDI_CHUNKSIZE))) {
LINE_DBG(SIGNAL, xpd, i, "MSG WAITING ON\n");
PHONEDEV(xpd).msg_waiting[i] = 1;
start_stop_vm_led(xbus, xpd, i);
} else if(unlikely(mem_equal(writechunk, FSK_OFF_PATTERN, DAHDI_CHUNKSIZE))) {
LINE_DBG(SIGNAL, xpd, i, "MSG WAITING OFF\n");
PHONEDEV(xpd).msg_waiting[i] = 0;
start_stop_vm_led(xbus, xpd, i);
} else {
int j;
LINE_NOTICE(xpd, i, "MSG WAITING Unexpected:");
for(j = 0; j < DAHDI_CHUNKSIZE; j++) {
printk(" %02X", writechunk[j]);
}
printk("\n");
}
}
}
}
static int FXS_card_tick(xbus_t *xbus, xpd_t *xpd)
{
struct FXS_priv_data *priv;
BUG_ON(!xpd);
priv = xpd->priv;
BUG_ON(!priv);
#ifdef POLL_DIGITAL_INPUTS
if(poll_digital_inputs && xpd->xbus_idx == 0) {
if((xpd->timer_count % poll_digital_inputs) == 0)
poll_inputs(xpd);
}
#endif
handle_fxs_leds(xpd);
handle_linefeed(xpd);
/*
* Hack alert (FIXME):
* Asterisk did FXS_card_open() and we wanted to report
* offhook state. However, the channel is spinlocked by dahdi
* so we marked it in the priv->update_offhook_state mask and
* now we take care of notification to dahdi and Asterisk
*/
if(priv->update_offhook_state) {
enum dahdi_rxsig rxsig;
int i;
for_each_line(xpd, i) {
if(!IS_SET(priv->update_offhook_state, i))
continue;
rxsig = IS_OFFHOOK(xpd, i) ? DAHDI_RXSIG_OFFHOOK : DAHDI_RXSIG_ONHOOK;
notify_rxsig(xpd, i, rxsig); /* Notify after open() */
BIT_CLR(priv->update_offhook_state, i);
}
}
if(SPAN_REGISTERED(xpd)) {
if (!vmwi_ioctl && priv->search_fsk_pattern)
detect_vmwi(xpd); /* Detect via FSK modulation */
}
return 0;
}
/*---------------- FXS: HOST COMMANDS -------------------------------------*/
/*---------------- FXS: Astribank Reply Handlers --------------------------*/
/*
* Should be called with spinlocked XPD
*/
static void process_hookstate(xpd_t *xpd, xpp_line_t offhook, xpp_line_t change_mask)
{
xbus_t *xbus;
struct FXS_priv_data *priv;
int i;
BUG_ON(!xpd);
BUG_ON(PHONEDEV(xpd).direction != TO_PHONE);
xbus = xpd->xbus;
priv = xpd->priv;
XPD_DBG(SIGNAL, xpd, "offhook=0x%X change_mask=0x%X\n", offhook, change_mask);
for_each_line(xpd, i) {
if(IS_SET(PHONEDEV(xpd).digital_outputs, i) || IS_SET(PHONEDEV(xpd).digital_inputs, i))
continue;
if(IS_SET(change_mask, i)) {
PHONEDEV(xpd).ringing[i] = 0; /* No more ringing... */
#ifdef WITH_METERING
metering_gen(xpd, i, 0); /* Stop metering... */
#endif
MARK_BLINK(priv, i, LED_GREEN, 0);
/*
* Reset our previous DTMF memories...
*/
BIT_CLR(priv->prev_key_down, i);
priv->prev_key_time[i].tv_sec = priv->prev_key_time[i].tv_usec = 0L;
if(IS_SET(offhook, i)) {
LINE_DBG(SIGNAL, xpd, i, "OFFHOOK\n");
MARK_ON(priv, i, LED_GREEN);
hookstate_changed(xpd, i, 1);
} else {
LINE_DBG(SIGNAL, xpd, i, "ONHOOK\n");
MARK_OFF(priv, i, LED_GREEN);
hookstate_changed(xpd, i, 0);
}
/*
* Must switch to low power. In high power, an ONHOOK
* won't be detected.
*/
do_chan_power(xbus, xpd, i, 0);
}
}
}
HANDLER_DEF(FXS, SIG_CHANGED)
{
xpp_line_t sig_status = RPACKET_FIELD(pack, FXS, SIG_CHANGED, sig_status);
xpp_line_t sig_toggles = RPACKET_FIELD(pack, FXS, SIG_CHANGED, sig_toggles);
unsigned long flags;
BUG_ON(!xpd);
BUG_ON(PHONEDEV(xpd).direction != TO_PHONE);
XPD_DBG(SIGNAL, xpd, "(PHONE) sig_toggles=0x%04X sig_status=0x%04X\n", sig_toggles, sig_status);
#if 0
Is this needed?
for_each_line(xpd, i) {
if(IS_SET(sig_toggles, i))
do_chan_power(xpd->xbus, xpd, BIT(i), 0); // Power down (prevent overheating!!!)
}
#endif
spin_lock_irqsave(&xpd->lock, flags);
process_hookstate(xpd, sig_status, sig_toggles);
spin_unlock_irqrestore(&xpd->lock, flags);
return 0;
}
#ifdef POLL_DIGITAL_INPUTS
static void process_digital_inputs(xpd_t *xpd, const reg_cmd_t *info)
{
int i;
bool offhook = (REG_FIELD(info, data_low) & 0x1) == 0;
xpp_line_t lines = BIT(info->portnum);
/* Map SLIC number into line number */
for(i = 0; i < ARRAY_SIZE(input_channels); i++) {
int channo = input_channels[i];
int newchanno;
if(IS_SET(lines, channo)) {
newchanno = PHONEDEV(xpd).channels - LINES_DIGI_INP + i;
BIT_CLR(lines, channo);
BIT_SET(lines, newchanno);
PHONEDEV(xpd).ringing[newchanno] = 0; // Stop ringing. No leds for digital inputs.
if(offhook && !IS_OFFHOOK(xpd, newchanno)) { // OFFHOOK
LINE_DBG(SIGNAL, xpd, newchanno, "OFFHOOK\n");
hookstate_changed(xpd, newchanno, 1);
} else if(!offhook && IS_OFFHOOK(xpd, newchanno)) { // ONHOOK
LINE_DBG(SIGNAL, xpd, newchanno, "ONHOOK\n");
hookstate_changed(xpd, newchanno, 0);
}
}
}
}
#endif
static const char dtmf_digits[] = {
'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '*', '#', 'A', 'B', 'C', 'D'
};
/*
* This function is called with spinlocked XPD
*/
static void process_dtmf(xpd_t *xpd, uint portnum, byte val)
{
byte digit;
bool key_down = val & 0x10;
bool want_mute;
bool want_event;
struct FXS_priv_data *priv;
struct timeval now;
int msec = 0;
if(!dtmf_detection)
return;
if(!SPAN_REGISTERED(xpd))
return;
priv = xpd->priv;
val &= 0xF;
if(val <= 0) {
if(key_down)
XPD_NOTICE(xpd, "Bad DTMF value %d. Ignored\n", val);
return;
}
val--;
digit = dtmf_digits[val];
want_mute = IS_SET(priv->want_dtmf_mute, portnum);
want_event = IS_SET(priv->want_dtmf_events, portnum);
if(!IS_SET(priv->prev_key_down, portnum) && !key_down) {
LINE_NOTICE(xpd, portnum, "DTMF: duplicate UP (%c)\n", digit);
}
if(key_down)
BIT_SET(priv->prev_key_down, portnum);
else
BIT_CLR(priv->prev_key_down, portnum);
do_gettimeofday(&now);
if(priv->prev_key_time[portnum].tv_sec != 0)
msec = usec_diff(&now, &priv->prev_key_time[portnum]) / 1000;
priv->prev_key_time[portnum] = now;
LINE_DBG(SIGNAL, xpd, portnum,
"[%lu.%06lu] DTMF digit %-4s '%c' (val=%d, want_mute=%s want_event=%s, delta=%d msec)\n",
now.tv_sec, now.tv_usec,
(key_down)?"DOWN":"UP", digit, val,
(want_mute) ? "yes" : "no",
(want_event) ? "yes" : "no",
msec);
/*
* FIXME: we currently don't use the want_dtmf_mute until
* we are sure about the logic in Asterisk native bridging.
* Meanwhile, simply mute it on button press.
*/
if(key_down && want_mute)
__do_mute_dtmf(xpd, portnum, 1);
else
__do_mute_dtmf(xpd, portnum, 0);
if(want_event) {
int event = (key_down) ? DAHDI_EVENT_DTMFDOWN : DAHDI_EVENT_DTMFUP;
dahdi_qevent_lock(XPD_CHAN(xpd, portnum), event | digit);
}
}
static int FXS_card_register_reply(xbus_t *xbus, xpd_t *xpd, reg_cmd_t *info)
{
unsigned long flags;
struct FXS_priv_data *priv;
byte regnum;
bool indirect;
spin_lock_irqsave(&xpd->lock, flags);
priv = xpd->priv;
BUG_ON(!priv);
indirect = (REG_FIELD(info, regnum) == 0x1E);
regnum = (indirect) ? REG_FIELD(info, subreg) : REG_FIELD(info, regnum);
XPD_DBG(REGS, xpd, "%s reg_num=0x%X, dataL=0x%X dataH=0x%X\n",
(indirect)?"I":"D",
regnum, REG_FIELD(info, data_low), REG_FIELD(info, data_high));
if(!indirect && regnum == REG_DTMF_DECODE) {
byte val = REG_FIELD(info, data_low);
process_dtmf(xpd, info->portnum, val);
}
#ifdef POLL_DIGITAL_INPUTS
/*
* Process digital inputs polling results
*/
else if(xpd->xbus_idx == 0 && !indirect && regnum == REG_DIGITAL_IOCTRL) {
process_digital_inputs(xpd, info);
}
#endif
else if(!indirect && regnum == REG_LOOPCLOSURE) { /* OFFHOOK ? */
byte val = REG_FIELD(info, data_low);
xpp_line_t mask = BIT(info->portnum);
xpp_line_t offhook;
/*
* Validate reply. Non-existing/disabled ports
* will reply with 0xFF. Ignore these.
*/
if((val & REG_LOOPCLOSURE_ZERO) == 0) {
offhook = (val & REG_LOOPCLOSURE_LCR) ? mask : 0;
LINE_DBG(SIGNAL, xpd, info->portnum,
"REG_LOOPCLOSURE: dataL=0x%X (offhook=0x%X mask=0x%X\n",
val, offhook, mask);
process_hookstate(xpd, offhook, mask);
}
} else {
#if 0
XPD_NOTICE(xpd, "Spurious register reply(ignored): %s reg_num=0x%X, dataL=0x%X dataH=0x%X\n",
(indirect)?"I":"D",
regnum, REG_FIELD(info, data_low), REG_FIELD(info, data_high));
#endif
}
/* Update /proc info only if reply relate to the last slic read request */
if(
REG_FIELD(&xpd->requested_reply, regnum) == REG_FIELD(info, regnum) &&
REG_FIELD(&xpd->requested_reply, do_subreg) == REG_FIELD(info, do_subreg) &&
REG_FIELD(&xpd->requested_reply, subreg) == REG_FIELD(info, subreg)) {
xpd->last_reply = *info;
}
spin_unlock_irqrestore(&xpd->lock, flags);
return 0;
}
static int FXS_card_state(xpd_t *xpd, bool on)
{
BUG_ON(!xpd);
XPD_DBG(GENERAL, xpd, "%s\n", (on)?"on":"off");
return 0;
}
static const struct xops fxs_xops = {
.card_new = FXS_card_new,
.card_init = FXS_card_init,
.card_remove = FXS_card_remove,
.card_tick = FXS_card_tick,
.card_register_reply = FXS_card_register_reply,
};
static const struct phoneops fxs_phoneops = {
.card_dahdi_preregistration = FXS_card_dahdi_preregistration,
.card_dahdi_postregistration = FXS_card_dahdi_postregistration,
.card_hooksig = FXS_card_hooksig,
.card_pcm_recompute = generic_card_pcm_recompute,
.card_pcm_fromspan = generic_card_pcm_fromspan,
.card_pcm_tospan = generic_card_pcm_tospan,
.card_timing_priority = generic_timing_priority,
.card_open = FXS_card_open,
.card_close = FXS_card_close,
.card_ioctl = FXS_card_ioctl,
.card_state = FXS_card_state,
};
static xproto_table_t PROTO_TABLE(FXS) = {
.owner = THIS_MODULE,
.entries = {
/* Prototable Card Opcode */
XENTRY( FXS, FXS, SIG_CHANGED ),
},
.name = "FXS", /* protocol name */
.ports_per_subunit = 8,
.type = XPD_TYPE_FXS,
.xops = &fxs_xops,
.phoneops = &fxs_phoneops,
.packet_is_valid = fxs_packet_is_valid,
.packet_dump = fxs_packet_dump,
};
static bool fxs_packet_is_valid(xpacket_t *pack)
{
const xproto_entry_t *xe;
// DBG(GENERAL, "\n");
xe = xproto_card_entry(&PROTO_TABLE(FXS), XPACKET_OP(pack));
return xe != NULL;
}
static void fxs_packet_dump(const char *msg, xpacket_t *pack)
{
DBG(GENERAL, "%s\n", msg);
}
/*------------------------- SLIC Handling --------------------------*/
#ifdef CONFIG_PROC_FS
static int proc_fxs_info_read(char *page, char **start, off_t off, int count, int *eof, void *data)
{
int len = 0;
unsigned long flags;
xpd_t *xpd = data;
struct FXS_priv_data *priv;
int i;
int led;
if(!xpd)
return -ENODEV;
spin_lock_irqsave(&xpd->lock, flags);
priv = xpd->priv;
BUG_ON(!priv);
len += sprintf(page + len, "%-8s %-10s %-10s %-10s\n",
"Channel",
"idletxhookstate",
"lasttxhook",
"ohttimer"
);
for_each_line(xpd, i) {
char pref;
if(IS_SET(PHONEDEV(xpd).digital_outputs, i))
pref = 'O';
else if(IS_SET(PHONEDEV(xpd).digital_inputs, i))
pref = 'I';
else
pref = ' ';
len += sprintf(page + len, "%c%7d %10d %10d %10d\n",
pref,
i,
priv->idletxhookstate[i],
priv->lasttxhook[i],
priv->ohttimer[i]
);
}
len += sprintf(page + len, "\n");
for(led = 0; led < NUM_LEDS; led++) {
len += sprintf(page + len, "LED #%d", led);
len += sprintf(page + len, "\n\t%-17s: ", "ledstate");
for_each_line(xpd, i) {
if(!IS_SET(PHONEDEV(xpd).digital_outputs, i) && !IS_SET(PHONEDEV(xpd).digital_inputs, i))
len += sprintf(page + len, "%d ", IS_SET(priv->ledstate[led], i));
}
len += sprintf(page + len, "\n\t%-17s: ", "ledcontrol");
for_each_line(xpd, i) {
if(!IS_SET(PHONEDEV(xpd).digital_outputs, i) && !IS_SET(PHONEDEV(xpd).digital_inputs, i))
len += sprintf(page + len, "%d ", IS_SET(priv->ledcontrol[led], i));
}
len += sprintf(page + len, "\n\t%-17s: ", "led_counter");
for_each_line(xpd, i) {
if(!IS_SET(PHONEDEV(xpd).digital_outputs, i) && !IS_SET(PHONEDEV(xpd).digital_inputs, i))
len += sprintf(page + len, "%d ", LED_COUNTER(priv,i,led));
}
len += sprintf(page + len, "\n");
}
spin_unlock_irqrestore(&xpd->lock, flags);
if (len <= off+count)
*eof = 1;
*start = page + off;
len -= off;
if (len > count)
len = count;
if (len < 0)
len = 0;
return len;
}
#endif
#ifdef WITH_METERING
static int proc_xpd_metering_write(struct file *file, const char __user *buffer, unsigned long count, void *data)
{
xpd_t *xpd = data;
char buf[MAX_PROC_WRITE];
lineno_t chan;
int num;
int ret;
if(!xpd)
return -ENODEV;
if(count >= MAX_PROC_WRITE - 1) {
XPD_ERR(xpd, "Metering string too long (%lu)\n", count);
return -EINVAL;
}
if(copy_from_user(&buf, buffer, count))
return -EFAULT;
buf[count] = '\0';
ret = sscanf(buf, "%d", &num);
if(ret != 1) {
XPD_ERR(xpd, "Metering value should be number. Got '%s'\n", buf);
return -EINVAL;
}
chan = num;
if(chan != PORT_BROADCAST && chan > xpd->channels) {
XPD_ERR(xpd, "Metering tone: bad channel number %d\n", chan);
return -EINVAL;
}
if((ret = metering_gen(xpd, chan, 1)) < 0) {
XPD_ERR(xpd, "Failed sending metering tone\n");
return ret;
}
return count;
}
#endif
static int fxs_xpd_probe(struct device *dev)
{
xpd_t *xpd;
xpd = dev_to_xpd(dev);
/* Is it our device? */
if(xpd->type != XPD_TYPE_FXS) {
XPD_ERR(xpd, "drop suggestion for %s (%d)\n",
dev_name(dev), xpd->type);
return -EINVAL;
}
XPD_DBG(DEVICES, xpd, "SYSFS\n");
return 0;
}
static int fxs_xpd_remove(struct device *dev)
{
xpd_t *xpd;
xpd = dev_to_xpd(dev);
XPD_DBG(DEVICES, xpd, "SYSFS\n");
return 0;
}
static struct xpd_driver fxs_driver = {
.type = XPD_TYPE_FXS,
.driver = {
.name = "fxs",
#ifndef OLD_HOTPLUG_SUPPORT
.owner = THIS_MODULE,
#endif
.probe = fxs_xpd_probe,
.remove = fxs_xpd_remove
}
};
static int __init card_fxs_startup(void)
{
int ret;
if((ret = xpd_driver_register(&fxs_driver.driver)) < 0)
return ret;
INFO("revision %s\n", XPP_VERSION);
#ifdef POLL_DIGITAL_INPUTS
INFO("FEATURE: with DIGITAL INPUTS support (polled every %d msec)\n",
poll_digital_inputs);
#else
INFO("FEATURE: without DIGITAL INPUTS support\n");
#endif
INFO("FEATURE: DAHDI_VMWI (HVAC only)\n");
#ifdef WITH_METERING
INFO("FEATURE: WITH METERING Generation\n");
#else
INFO("FEATURE: NO METERING Generation\n");
#endif
xproto_register(&PROTO_TABLE(FXS));
return 0;
}
static void __exit card_fxs_cleanup(void)
{
xproto_unregister(&PROTO_TABLE(FXS));
xpd_driver_unregister(&fxs_driver.driver);
}
MODULE_DESCRIPTION("XPP FXS Card Driver");
MODULE_AUTHOR("Oron Peled <oron@actcom.co.il>");
MODULE_LICENSE("GPL");
MODULE_VERSION(XPP_VERSION);
MODULE_ALIAS_XPD(XPD_TYPE_FXS);
module_init(card_fxs_startup);
module_exit(card_fxs_cleanup);
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