1331610048
* Caller to CALL_XMETHOD() no longer need to explicitly pass xbus
(calculate xpd->xbus)
* Create CALL_PHONE_METHOD() similar to CALL_XMETHOD() -- inlining
the extra parameters (more readable)
* Reverse parameter order in PHONE_METHOD() and CALL_PHONE_METHOD()
to be consistent with XMETHOD() and CALL_XMETHOD()
* Rename XPD_STATE phonedev method to card_state:
- Consistency with other phonedev methods.
- These calls now Wrap internal calls to XPD_STATE protocol HOSTCMD
in PRI, BRI, FXS, FXO
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@9706 a0bf4364-ded3-4de4-8d8a-66a801d63aff
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/*
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* Written by Oron Peled <oron@actcom.co.il>
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* Copyright (C) 2004-2007, Xorcom
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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* This source module contains all the PCM and SYNC handling code.
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*/
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#ifndef XBUS_PCM_H
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#define XBUS_PCM_H
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#include "xdefs.h"
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#include <linux/proc_fs.h>
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#include <dahdi/kernel.h>
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#ifdef __KERNEL__
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enum sync_mode {
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SYNC_MODE_NONE = 0x00,
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SYNC_MODE_AB = 0x01, /* Astribank sync */
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SYNC_MODE_PLL = 0x03, /* Adjust XPD's PLL according to HOST */
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SYNC_MODE_QUERY = 0x80,
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};
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/*
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* Abstract representation of timestamp.
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* It would (eventually) replace the hard-coded
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* timeval structs so we can migrate to better
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* time representations.
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*/
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struct xpp_timestamp {
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struct timeval tv;
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};
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/*
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* A ticker encapsulates the timing information of some
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* abstract tick source. The following tickers are used:
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* - Each xbus has an embedded ticker.
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* - There is one global dahdi_ticker to represent ticks
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* of external dahdi card (in case we want to sync
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* from other dahdi devices).
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*/
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struct xpp_ticker { /* for rate calculation */
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int count;
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int cycle;
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struct xpp_timestamp first_sample;
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struct xpp_timestamp last_sample;
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int tick_period; /* usec/tick */
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spinlock_t lock;
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};
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/*
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* xpp_drift represent the measurements of the offset between an
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* xbus ticker to a reference ticker.
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*/
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struct xpp_drift {
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int delta_tick; /* from ref_ticker */
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int lost_ticks; /* occurances */
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int lost_tick_count;
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int sync_inaccuracy;
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struct xpp_timestamp last_lost_tick;
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long delta_sum;
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int offset_prev;
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int offset_range;
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int offset_min;
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int offset_max;
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int min_speed;
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int max_speed;
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spinlock_t lock;
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};
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void xpp_drift_init(xbus_t *xbus);
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static inline long usec_diff(const struct timeval *tv1, const struct timeval *tv2)
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{
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long diff_sec;
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long diff_usec;
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diff_sec = tv1->tv_sec - tv2->tv_sec;
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diff_usec = tv1->tv_usec - tv2->tv_usec;
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return diff_sec * 1000000 + diff_usec;
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}
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int xbus_pcm_init(void *top);
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void xbus_pcm_shutdown(void);
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int send_pcm_frame(xbus_t *xbus, xframe_t *xframe);
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void pcm_recompute(xpd_t *xpd, xpp_line_t tmp_pcm_mask);
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void xframe_receive_pcm(xbus_t *xbus, xframe_t *xframe);
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void update_wanted_pcm_mask(xpd_t *xpd, xpp_line_t new_mask, uint new_pcm_len);
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void generic_card_pcm_recompute(xpd_t *xpd, xpp_line_t pcm_mask);
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void generic_card_pcm_fromspan(xpd_t *xpd, xpacket_t *pack);
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void generic_card_pcm_tospan(xpd_t *xpd, xpacket_t *pack);
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int generic_timing_priority(xpd_t *xpd);
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void fill_beep(u_char *buf, int num, int duration);
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const char *sync_mode_name(enum sync_mode mode);
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void xbus_set_command_timer(xbus_t *xbus, bool on);
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void xbus_request_sync(xbus_t *xbus, enum sync_mode mode);
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void got_new_syncer(xbus_t *xbus, enum sync_mode mode, int drift);
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int xbus_command_queue_tick(xbus_t *xbus);
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void xbus_reset_counters(xbus_t *xbus);
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void elect_syncer(const char *msg);
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int exec_sync_command(const char *buf, size_t count);
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int fill_sync_string(char *buf, size_t count);
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#ifdef DAHDI_SYNC_TICK
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void dahdi_sync_tick(struct dahdi_span *span, int is_master);
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#endif
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#ifdef DEBUG_PCMTX
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extern int pcmtx;
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extern int pcmtx_chan;
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#endif
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#endif /* __KERNEL__ */
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#endif /* XBUS_PCM_H */
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