path: root/drivers/isdn/hisax/netjet.c

/* $Id: netjet.c,v 1.29.2.4 2004/02/11 13:21:34 keil Exp $
 *
 * low level stuff for Traverse Technologie NETJet ISDN cards
 *
 * 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.
 *
 * Thanks to Traverse Technologies Australia for documents and information
 *
 * 16-Apr-2002 - led code added - Guy Ellis (guy@traverse.com.au)
 *
 */

#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
#include <linux/interrupt.h>
#include <linux/ppp_defs.h>
#include <asm/io.h>
#include "netjet.h"

/* Interface functions */

u_char
NETjet_ReadIC(struct IsdnCardState *cs, u_char offset)
{
	u_char ret;
	
	cs->hw.njet.auxd &= 0xfc;
	cs->hw.njet.auxd |= (offset>>4) & 3;
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	ret = bytein(cs->hw.njet.isac + ((offset & 0xf)<<2));
	return(ret);
}

void
NETjet_WriteIC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	cs->hw.njet.auxd &= 0xfc;
	cs->hw.njet.auxd |= (offset>>4) & 3;
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	byteout(cs->hw.njet.isac + ((offset & 0xf)<<2), value);
}

void
NETjet_ReadICfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	cs->hw.njet.auxd &= 0xfc;
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	insb(cs->hw.njet.isac, data, size);
}

void 
NETjet_WriteICfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	cs->hw.njet.auxd &= 0xfc;
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	outsb(cs->hw.njet.isac, data, size);
}

static void fill_mem(struct BCState *bcs, u_int *pos, u_int cnt, int chan, u_char fill)
{
	u_int mask=0x000000ff, val = 0, *p=pos;
	u_int i;
	
	val |= fill;
	if (chan) {
		val  <<= 8;
		mask <<= 8;
	}
	mask ^= 0xffffffff;
	for (i=0; i<cnt; i++) {
		*p   &= mask;
		*p++ |= val;
		if (p > bcs->hw.tiger.s_end)
			p = bcs->hw.tiger.send;
	}
}

static void
mode_tiger(struct BCState *bcs, int mode, int bc)
{
	struct IsdnCardState *cs = bcs->cs;
        u_char led;

	if (cs->debug & L1_DEB_HSCX)
		debugl1(cs, "Tiger mode %d bchan %d/%d",
			mode, bc, bcs->channel);
	bcs->mode = mode;
	bcs->channel = bc;
	switch (mode) {
		case (L1_MODE_NULL):
			fill_mem(bcs, bcs->hw.tiger.send,
				NETJET_DMA_TXSIZE, bc, 0xff);
			if (cs->debug & L1_DEB_HSCX)
				debugl1(cs, "Tiger stat rec %d/%d send %d",
					bcs->hw.tiger.r_tot, bcs->hw.tiger.r_err,
					bcs->hw.tiger.s_tot); 
			if ((cs->bcs[0].mode == L1_MODE_NULL) &&
				(cs->bcs[1].mode == L1_MODE_NULL)) {
				cs->hw.njet.dmactrl = 0;
				byteout(cs->hw.njet.base + NETJET_DMACTRL,
					cs->hw.njet.dmactrl);
				byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
			}
                        if (cs->typ == ISDN_CTYPE_NETJET_S)
                        {
                                // led off
                                led = bc & 0x01;
                                led = 0x01 << (6 + led); // convert to mask
                                led