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/* $Id: teleint.c,v 1.14.6.1 2001/02/16 16:43:29 kai Exp $
*
* teleint.c low level stuff for TeleInt isdn cards
*
* Author Karsten Keil (keil@isdn4linux.de)
*
* This file is (c) under GNU General Public License
*
*/
#define __NO_VERSION__
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hfc_2bs0.h"
#include "isdnl1.h"
extern const char *CardType[];
const char *TeleInt_revision = "$Revision: 1.14.6.1 $";
#define byteout(addr,val) outb(val,addr)
#define bytein(addr) inb(addr)
static inline u_char
readreg(unsigned int ale, unsigned int adr, u_char off)
{
register u_char ret;
int max_delay = 2000;
long flags;
save_flags(flags);
cli();
byteout(ale, off);
ret = HFC_BUSY & bytein(ale);
while (ret && --max_delay)
ret = HFC_BUSY & bytein(ale);
if (!max_delay) {
printk(KERN_WARNING "TeleInt Busy not inactive\n");
restore_flags(flags);
return (0);
}
ret = bytein(adr);
restore_flags(flags);
return (ret);
}
static inline void
readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
{
register u_char ret;
register int max_delay = 20000;
register int i;
byteout(ale, off);
for (i = 0; i<size; i++) {
ret = HFC_BUSY & bytein(ale);
while (ret && --max_delay)
ret = HFC_BUSY & bytein(ale);
if (!max_delay) {
printk(KERN_WARNING "TeleInt Busy not inactive\n");
return;
}
data[i] = bytein(adr);
}
}
static inline void
writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
{
register u_char ret;
int max_delay = 2000;
long flags;
save_flags(flags);
cli();
byteout(ale, off);
ret = HFC_BUSY & bytein(ale);
while (ret && --max_delay)
ret = HFC_BUSY & bytein(ale);
if (!max_delay) {
printk(KERN_WARNING "TeleInt Busy not inactive\n");
restore_flags(flags);
return;
}
byteout(adr, data);
restore_flags(flags);
}
static inline void
writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
{
register u_char ret;
register int max_delay = 20000;
register int i;
/* fifo write without cli because it's allready done */
byteout(ale, off);
for (i = 0; i<size; i++) {
ret = HFC_BUSY & bytein(ale);
while (ret && --max_delay)
ret = HFC_BUSY & bytein(ale);
if (!max_delay) {
printk(KERN_WARNING "TeleInt Busy not inactive\n");
return;
}
byteout(adr, data[i]);
}
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
cs->hw.hfc.cip = offset;
return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
cs->hw.hfc.cip = offset;
writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
cs->hw.hfc.cip = 0;
readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
cs->hw.hfc.cip = 0;
writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
}
static u_char
ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
{
register u_char ret;
if (data) {
cs->hw.hfc.cip = reg;
byteout(cs->hw.hfc.addr | 1, reg);
ret = bytein(cs->hw.hfc.addr);
if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
debugl1(cs, "hfc RD %02x %02x", reg, ret);
} else
ret = bytein(cs->hw.hfc.addr | 1);
return (ret);
}
static void
WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
{
byteout(cs->hw.hfc.addr | 1, reg);
cs->hw.hfc.cip = reg;
if (data)
byteout(cs->hw.hfc.addr, value);
if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
}
static void
TeleInt_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u_char val;
if (!cs) {
printk(KERN_WARNING "TeleInt: Spurious interrupt!\n");
return;
}
val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
Start_ISAC:
if (val)
isac_interrupt(cs, val);
val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
if (val) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
}
static void
TeleInt_Timer(struct IsdnCardState *cs)
{
int stat = 0;
if (cs->bcs[0].mode) {
stat |= 1;
main_irq_hfc(&cs->bcs[0]);
}
if (cs->bcs[1].mode) {
stat |= 2;
main_irq_hfc(&cs->bcs[1]);
}
cs->hw.hfc.timer.expires = jiffies + 1;
add_timer(&cs->hw.hfc.timer);
}
void
release_io_TeleInt(struct IsdnCardState *cs)
{
del_timer(&cs->hw.hfc.timer);
releasehfc(cs);
if (cs->hw.hfc.addr)
release_region(cs->hw.hfc.addr, 2);
}
static void
reset_TeleInt(struct IsdnCardState *cs)
{
long flags;
printk(KERN_INFO "TeleInt: resetting card\n");
cs->hw.hfc.cirm |= HFC_RESET;
byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
save_flags(flags);
sti();
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((30*HZ)/1000);
cs->hw.hfc.cirm &= ~HFC_RESET;
byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout((10*HZ)/1000);
restore_flags(flags);
}
static int
TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
switch (mt) {
case CARD_RESET:
reset_TeleInt(cs);
return(0);
case CARD_RELEASE:
release_io_TeleInt(cs);
return(0);
case CARD_INIT:
inithfc(cs);
clear_pending_isac_ints(cs);
initisac(cs);
/* Reenable all IRQ */
cs->writeisac(cs, ISAC_MASK, 0);
cs->writeisac(cs, ISAC_CMDR, 0x41);
cs->hw.hfc.timer.expires = jiffies + 1;
add_timer(&cs->hw.hfc.timer);
return(0);
case CARD_TEST:
return(0);
}
return(0);
}
int __init
setup_TeleInt(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, TeleInt_revision);
printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_TELEINT)
return (0);
cs->hw.hfc.addr = card->para[1] & 0x3fe;
cs->irq = card->para[0];
cs->hw.hfc.cirm = HFC_CIRM;
cs->hw.hfc.isac_spcr = 0x00;
cs->hw.hfc.cip = 0;
cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
cs->bcs[0].hw.hfc.send = NULL;
cs->bcs[1].hw.hfc.send = NULL;
cs->hw.hfc.fifosize = 7 * 1024 + 512;
cs->hw.hfc.timer.function = (void *) TeleInt_Timer;
cs->hw.hfc.timer.data = (long) cs;
init_timer(&cs->hw.hfc.timer);
if (check_region((cs->hw.hfc.addr), 2)) {
printk(KERN_WARNING
"HiSax: %s config port %x-%x already in use\n",
CardType[card->typ],
cs->hw.hfc.addr,
cs->hw.hfc.addr + 2);
return (0);
} else {
request_region(cs->hw.hfc.addr, 2, "TeleInt isdn");
}
/* HW IO = IO */
byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
switch (cs->irq) {
case 3:
cs->hw.hfc.cirm |= HFC_INTA;
break;
case 4:
cs->hw.hfc.cirm |= HFC_INTB;
break;
case 5:
cs->hw.hfc.cirm |= HFC_INTC;
break;
case 7:
cs->hw.hfc.cirm |= HFC_INTD;
break;
case 10:
cs->hw.hfc.cirm |= HFC_INTE;
break;
case 11:
cs->hw.hfc.cirm |= HFC_INTF;
break;
default:
printk(KERN_WARNING "TeleInt: wrong IRQ\n");
release_io_TeleInt(cs);
return (0);
}
byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
printk(KERN_INFO
"TeleInt: defined at 0x%x IRQ %d\n",
cs->hw.hfc.addr,
cs->irq);
reset_TeleInt(cs);
cs->readisac = &ReadISAC;
cs->writeisac = &WriteISAC;
cs->readisacfifo = &ReadISACfifo;
cs->writeisacfifo = &WriteISACfifo;
cs->BC_Read_Reg = &ReadHFC;
cs->BC_Write_Reg = &WriteHFC;
cs->cardmsg = &TeleInt_card_msg;
cs->irq_func = &TeleInt_interrupt;
ISACVersion(cs, "TeleInt:");
return (1);
}
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