[mirror_ubuntu-bionic-kernel.git] / drivers / isdn / hisax / arcofi.c

/* $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);
	}
	init_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 IsdnCardState *cs) {
	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) {
	setup_timer(&cs->dc.isac.arcofitimer, (void *)arcofi_timer, (long)cs);
	init_waitqueue_head(&cs->dc.isac.arcofi_wait);
	test_and_set_bit(HW_ARCOFI, &cs->HW_Flags);
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: arcofi.c,v 1.14.2.3 2004/01/13 14:31:24 keil Exp $
	2	*
	3	* Ansteuerung ARCOFI 2165
	4	*
	5	* Author Karsten Keil
	6	* Copyright by Karsten Keil <keil@isdn4linux.de>
	7	*
	8	* This software may be used and distributed according to the terms
	9	* of the GNU General Public License, incorporated herein by reference.
	10	*
	11	*/
475be4d8	12
d43c36dc	13	#include <linux/sched.h>
1da177e4 LT	14	#include "hisax.h"
	15	#include "isdnl1.h"
	16	#include "isac.h"
	17	#include "arcofi.h"
	18
	19	#define ARCOFI_TIMER_VALUE 20
	20
	21	static void
	22	add_arcofi_timer(struct IsdnCardState *cs) {
	23	if (test_and_set_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
	24	del_timer(&cs->dc.isac.arcofitimer);
475be4d8	25	}
1da177e4	26	init_timer(&cs->dc.isac.arcofitimer);
475be4d8	27	cs->dc.isac.arcofitimer.expires = jiffies + ((ARCOFI_TIMER_VALUE * HZ) / 1000);
1da177e4 LT	28	add_timer(&cs->dc.isac.arcofitimer);
	29	}
	30
	31	static void
	32	send_arcofi(struct IsdnCardState *cs) {
1da177e4 LT	33	add_arcofi_timer(cs);
	34	cs->dc.isac.mon_txp = 0;
	35	cs->dc.isac.mon_txc = cs->dc.isac.arcofi_list->len;
	36	memcpy(cs->dc.isac.mon_tx, cs->dc.isac.arcofi_list->msg, cs->dc.isac.mon_txc);
475be4d8 JP	37	switch (cs->dc.isac.arcofi_bc) {
	38	case 0: break;
	39	case 1: cs->dc.isac.mon_tx[1] \|= 0x40;
	40	break;
	41	default: break;
1da177e4 LT	42	}
	43	cs->dc.isac.mocr &= 0x0f;
	44	cs->dc.isac.mocr \|= 0xa0;
	45	cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
011bc1ef	46	(void) cs->readisac(cs, ISAC_MOSR);
1da177e4 LT	47	cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
	48	cs->dc.isac.mocr \|= 0x10;
	49	cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
	50	}
	51
	52	int
	53	arcofi_fsm(struct IsdnCardState cs, int event, void data) {
	54	if (cs->debug & L1_DEB_MONITOR) {
	55	debugl1(cs, "arcofi state %d event %d", cs->dc.isac.arcofi_state, event);
	56	}
	57	if (event == ARCOFI_TIMEOUT) {
	58	cs->dc.isac.arcofi_state = ARCOFI_NOP;
	59	test_and_set_bit(FLG_ARCOFI_ERROR, &cs->HW_Flags);
	60	wake_up(&cs->dc.isac.arcofi_wait);
475be4d8	61	return (1);
1da177e4 LT	62	}
1da177e4 LT	63	switch (cs->dc.isac.arcofi_state) {
475be4d8 JP	64	case ARCOFI_NOP:
	65	if (event == ARCOFI_START) {
	66	cs->dc.isac.arcofi_list = data;
	67	cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
	68	send_arcofi(cs);
	69	}
	70	break;
	71	case ARCOFI_TRANSMIT:
	72	if (event == ARCOFI_TX_END) {
	73	if (cs->dc.isac.arcofi_list->receive) {
	74	add_arcofi_timer(cs);
	75	cs->dc.isac.arcofi_state = ARCOFI_RECEIVE;
	76	} else {
1da177e4 LT	77	if (cs->dc.isac.arcofi_list->next) {
	78	cs->dc.isac.arcofi_list =
	79	cs->dc.isac.arcofi_list->next;
1da177e4 LT	80	send_arcofi(cs);
	81	} else {
	82	if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
	83	del_timer(&cs->dc.isac.arcofitimer);
	84	}
	85	cs->dc.isac.arcofi_state = ARCOFI_NOP;
	86	wake_up(&cs->dc.isac.arcofi_wait);
	87	}
	88	}
475be4d8 JP	89	}
	90	break;
	91	case ARCOFI_RECEIVE:
	92	if (event == ARCOFI_RX_END) {
	93	if (cs->dc.isac.arcofi_list->next) {
	94	cs->dc.isac.arcofi_list =
	95	cs->dc.isac.arcofi_list->next;
	96	cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
	97	send_arcofi(cs);
	98	} else {
	99	if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
	100	del_timer(&cs->dc.isac.arcofitimer);
	101	}
	102	cs->dc.isac.arcofi_state = ARCOFI_NOP;
	103	wake_up(&cs->dc.isac.arcofi_wait);
	104	}
	105	}
	106	break;
	107	default:
	108	debugl1(cs, "Arcofi unknown state %x", cs->dc.isac.arcofi_state);
	109	return (2);
1da177e4	110	}
475be4d8	111	return (0);
1da177e4 LT	112	}
	113
	114	static void
	115	arcofi_timer(struct IsdnCardState *cs) {
	116	arcofi_fsm(cs, ARCOFI_TIMEOUT, NULL);
	117	}
	118
	119	void
	120	clear_arcofi(struct IsdnCardState *cs) {
	121	if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
	122	del_timer(&cs->dc.isac.arcofitimer);
	123	}
	124	}
	125
	126	void
	127	init_arcofi(struct IsdnCardState *cs) {
aff55a36	128	setup_timer(&cs->dc.isac.arcofitimer, (void *)arcofi_timer, (long)cs);
1da177e4 LT	129	init_waitqueue_head(&cs->dc.isac.arcofi_wait);
	130	test_and_set_bit(HW_ARCOFI, &cs->HW_Flags);
	131	}