124 lines
3.7 KiB
C
124 lines
3.7 KiB
C
/* $Id: timer.c,v 1.3.6.1 2001/09/23 22:24:59 kai Exp $
|
|
*
|
|
* Copyright (C) 1996 SpellCaster Telecommunications Inc.
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
* For more information, please contact gpl-info@spellcast.com or write:
|
|
*
|
|
* SpellCaster Telecommunications Inc.
|
|
* 5621 Finch Avenue East, Unit #3
|
|
* Scarborough, Ontario Canada
|
|
* M1B 2T9
|
|
* +1 (416) 297-8565
|
|
* +1 (416) 297-6433 Facsimile
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "hardware.h"
|
|
#include "message.h"
|
|
#include "card.h"
|
|
|
|
|
|
/*
|
|
* Write the proper values into the I/O ports following a reset
|
|
*/
|
|
static void setup_ports(int card)
|
|
{
|
|
|
|
outb((sc_adapter[card]->rambase >> 12), sc_adapter[card]->ioport[EXP_BASE]);
|
|
|
|
/* And the IRQ */
|
|
outb((sc_adapter[card]->interrupt | 0x80),
|
|
sc_adapter[card]->ioport[IRQ_SELECT]);
|
|
}
|
|
|
|
/*
|
|
* Timed function to check the status of a previous reset
|
|
* Must be very fast as this function runs in the context of
|
|
* an interrupt handler.
|
|
*
|
|
* Setup the ioports for the board that were cleared by the reset.
|
|
* Then, check to see if the signate has been set. Next, set the
|
|
* signature to a known value and issue a startproc if needed.
|
|
*/
|
|
void sc_check_reset(unsigned long data)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long sig;
|
|
int card = (unsigned int) data;
|
|
|
|
pr_debug("%s: check_timer timer called\n",
|
|
sc_adapter[card]->devicename);
|
|
|
|
/* Setup the io ports */
|
|
setup_ports(card);
|
|
|
|
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
|
|
outb(sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport],
|
|
(sc_adapter[card]->shmem_magic>>14) | 0x80);
|
|
sig = (unsigned long) *((unsigned long *)(sc_adapter[card]->rambase + SIG_OFFSET));
|
|
|
|
/* check the signature */
|
|
if(sig == SIGNATURE) {
|
|
flushreadfifo(card);
|
|
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
|
|
/* See if we need to do a startproc */
|
|
if (sc_adapter[card]->StartOnReset)
|
|
startproc(card);
|
|
} else {
|
|
pr_debug("%s: No signature yet, waiting another %lu jiffies.\n",
|
|
sc_adapter[card]->devicename, CHECKRESET_TIME);
|
|
mod_timer(&sc_adapter[card]->reset_timer, jiffies+CHECKRESET_TIME);
|
|
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Timed function to check the status of a previous reset
|
|
* Must be very fast as this function runs in the context of
|
|
* an interrupt handler.
|
|
*
|
|
* Send check sc_adapter->phystat to see if the channels are up
|
|
* If they are, tell ISDN4Linux that the board is up. If not,
|
|
* tell IADN4Linux that it is up. Always reset the timer to
|
|
* fire again (endless loop).
|
|
*/
|
|
void check_phystat(unsigned long data)
|
|
{
|
|
unsigned long flags;
|
|
int card = (unsigned int) data;
|
|
|
|
pr_debug("%s: Checking status...\n", sc_adapter[card]->devicename);
|
|
/*
|
|
* check the results of the last PhyStat and change only if
|
|
* has changed drastically
|
|
*/
|
|
if (sc_adapter[card]->nphystat && !sc_adapter[card]->phystat) { /* All is well */
|
|
pr_debug("PhyStat transition to RUN\n");
|
|
pr_info("%s: Switch contacted, transmitter enabled\n",
|
|
sc_adapter[card]->devicename);
|
|
indicate_status(card, ISDN_STAT_RUN, 0, NULL);
|
|
}
|
|
else if (!sc_adapter[card]->nphystat && sc_adapter[card]->phystat) { /* All is not well */
|
|
pr_debug("PhyStat transition to STOP\n");
|
|
pr_info("%s: Switch connection lost, transmitter disabled\n",
|
|
sc_adapter[card]->devicename);
|
|
|
|
indicate_status(card, ISDN_STAT_STOP, 0, NULL);
|
|
}
|
|
|
|
sc_adapter[card]->phystat = sc_adapter[card]->nphystat;
|
|
|
|
/* Reinitialize the timer */
|
|
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
|
|
mod_timer(&sc_adapter[card]->stat_timer, jiffies+CHECKSTAT_TIME);
|
|
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
|
|
|
|
/* Send a new cePhyStatus message */
|
|
sendmessage(card, CEPID,ceReqTypePhy,ceReqClass2,
|
|
ceReqPhyStatus,0,0,NULL);
|
|
}
|
|
|