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/* $Id: arcofi.c,v 1.14.2.3 2004/01/13 14:31:24 keil Exp $
*
* Ansteuerung ARCOFI 2165
*
* Author Karsten Keil
* Copyright by Karsten Keil <keil@isdn4linux.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/sched.h>
#include "hisax.h"
#include "isdnl1.h"
#include "isac.h"
#include "arcofi.h"
#define ARCOFI_TIMER_VALUE 20
static void
add_arcofi_timer(struct IsdnCardState *cs) {
if (test_and_set_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
del_timer(&cs->dc.isac.arcofitimer);
}
cs->dc.isac.arcofitimer.expires = jiffies + ((ARCOFI_TIMER_VALUE * HZ) / 1000);
add_timer(&cs->dc.isac.arcofitimer);
}
static void
send_arcofi(struct IsdnCardState *cs) {
add_arcofi_timer(cs);
cs->dc.isac.mon_txp = 0;
cs->dc.isac.mon_txc = cs->dc.isac.arcofi_list->len;
memcpy(cs->dc.isac.mon_tx, cs->dc.isac.arcofi_list->msg, cs->dc.isac.mon_txc);
switch (cs->dc.isac.arcofi_bc) {
case 0: break;
case 1: cs->dc.isac.mon_tx[1] |= 0x40;
break;
default: break;
}
cs->dc.isac.mocr &= 0x0f;
cs->dc.isac.mocr |= 0xa0;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
(void) cs->readisac(cs, ISAC_MOSR);
cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
cs->dc.isac.mocr |= 0x10;
cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
}
int
arcofi_fsm(struct IsdnCardState *cs, int event, void *data) {
if (cs->debug & L1_DEB_MONITOR) {
debugl1(cs, "arcofi state %d event %d", cs->dc.isac.arcofi_state, event);
}
if (event == ARCOFI_TIMEOUT) {
cs->dc.isac.arcofi_state = ARCOFI_NOP;
test_and_set_bit(FLG_ARCOFI_ERROR, &cs->HW_Flags);
wake_up(&cs->dc.isac.arcofi_wait);
return (1);
}
switch (cs->dc.isac.arcofi_state) {
case ARCOFI_NOP:
if (event == ARCOFI_START) {
cs->dc.isac.arcofi_list = data;
cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
send_arcofi(cs);
}
break;
case ARCOFI_TRANSMIT:
if (event == ARCOFI_TX_END) {
if (cs->dc.isac.arcofi_list->receive) {
add_arcofi_timer(cs);
cs->dc.isac.arcofi_state = ARCOFI_RECEIVE;
} else {
if (cs->dc.isac.arcofi_list->next) {
cs->dc.isac.arcofi_list =
cs->dc.isac.arcofi_list->next;
send_arcofi(cs);
} else {
if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
del_timer(&cs->dc.isac.arcofitimer);
}
cs->dc.isac.arcofi_state = ARCOFI_NOP;
wake_up(&cs->dc.isac.arcofi_wait);
}
}
}
break;
case ARCOFI_RECEIVE:
if (event == ARCOFI_RX_END) {
if (cs->dc.isac.arcofi_list->next) {
cs->dc.isac.arcofi_list =
cs->dc.isac.arcofi_list->next;
cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
send_arcofi(cs);
} else {
if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
del_timer(&cs->dc.isac.arcofitimer);
}
cs->dc.isac.arcofi_state = ARCOFI_NOP;
wake_up(&cs->dc.isac.arcofi_wait);
}
}
break;
default:
debugl1(cs, "Arcofi unknown state %x", cs->dc.isac.arcofi_state);
return (2);
}
return (0);
}
static void
arcofi_timer(struct timer_list *t) {
struct IsdnCardState *cs = from_timer(cs, t, dc.isac.arcofitimer);
arcofi_fsm(cs, ARCOFI_TIMEOUT, NULL);
}
void
clear_arcofi(struct IsdnCardState *cs) {
if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
del_timer(&cs->dc.isac.arcofitimer);
}
}
void
init_arcofi(struct IsdnCardState *cs) {
timer_setup(&cs->dc.isac.arcofitimer, arcofi_timer, 0);
init_waitqueue_head(&cs->dc.isac.arcofi_wait);
test_and_set_bit(HW_ARCOFI, &cs->HW_Flags);
}
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