s0box.c
/* s0box.c.shtml,v 1.1.1.1 2002/08/19 05:50:13 fritz Exp
* s0box.c low level stuff for Creatix S0BOX
*
* Author S0BOX specific stuff: Enrik Berkhan (enrik@starfleet.inka.de)
*
*
*/
#define __NO_VERSION__
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
extern const char *CardType[];
const char *s0box_revision = "1.1.1.1";
static inline void
writereg(unsigned int padr, signed int addr, u_char off, u_char val) {
unsigned long flags;
save_flags(flags);
cli();
outb_p(0x1c,padr+2);
outb_p(0x14,padr+2);
outb_p((addr+off)&0x7f,padr);
outb_p(0x16,padr+2);
outb_p(val,padr);
outb_p(0x17,padr+2);
outb_p(0x14,padr+2);
outb_p(0x1c,padr+2);
restore_flags(flags);
}
static u_char nibtab[] = { 1, 9, 5, 0xd, 3, 0xb, 7, 0xf,
0, 0, 0, 0, 0, 0, 0, 0,
0, 8, 4, 0xc, 2, 0xa, 6, 0xe } ;
static inline u_char
readreg(unsigned int padr, signed int addr, u_char off) {
register u_char n1, n2;
unsigned long flags;
save_flags(flags);
cli();
outb_p(0x1c,padr+2);
outb_p(0x14,padr+2);
outb_p((addr+off)|0x80,padr);
outb_p(0x16,padr+2);
outb_p(0x17,padr+2);
n1 = (inb_p(padr+1) >> 3) & 0x17;
outb_p(0x16,padr+2);
n2 = (inb_p(padr+1) >> 3) & 0x17;
outb_p(0x14,padr+2);
outb_p(0x1c,padr+2);
restore_flags(flags);
return nibtab[n1] | (nibtab[n2] << 4);
}
static inline void
read_fifo(unsigned int padr, signed int adr, u_char * data, int size)
{
int i;
register u_char n1, n2;
outb_p(0x1c, padr+2);
outb_p(0x14, padr+2);
outb_p(adr|0x80, padr);
outb_p(0x16, padr+2);
for (i=0; i<size; i++) {
outb_p(0x17, padr+2);
n1 = (inb_p(padr+1) >> 3) & 0x17;
outb_p(0x16,padr+2);
n2 = (inb_p(padr+1) >> 3) & 0x17;
*(data++)=nibtab[n1] | (nibtab[n2] << 4);
}
outb_p(0x14,padr+2);
outb_p(0x1c,padr+2);
return;
}
static inline void
write_fifo(unsigned int padr, signed int adr, u_char * data, int size)
{
int i;
outb_p(0x1c, padr+2);
outb_p(0x14, padr+2);
outb_p(adr&0x7f, padr);
for (i=0; i<size; i++) {
outb_p(0x16, padr+2);
outb_p(*(data++), padr);
outb_p(0x17, padr+2);
}
outb_p(0x14,padr+2);
outb_p(0x1c,padr+2);
return;
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset, value);
}
/*
* fast interrupt HSCX stuff goes here
*/
#define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg)
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg, data)
#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
#include "hscx_irq.c"
static void
s0box_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
#define MAXCOUNT 20
struct IsdnCardState *cs = dev_id;
u_char val, stat = 0;
int count = 0;
if (!cs) {
printk(KERN_WARNING "Teles: Spurious interrupt!\n");
return;
}
val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
Start_HSCX:
if (val) {
hscx_int_main(cs, val);
stat |= 1;
}
val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
Start_ISAC:
if (val) {
isac_interrupt(cs, val);
stat |= 2;
}
count++;
val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
if (val && count < MAXCOUNT) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "HSCX IntStat after IntRoutine");
goto Start_HSCX;
}
val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
if (val && count < MAXCOUNT) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
if (count >= MAXCOUNT)
printk(KERN_WARNING "S0Box: more than %d loops in s0box_interrupt\n", count);
if (stat & 1) {
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0x0);
}
if (stat & 2) {
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0xFF);
writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0);
}
}
void
release_io_s0box(struct IsdnCardState *cs)
{
release_region(cs->hw.teles3.cfg_reg, 8);
}
static int
S0Box_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
switch (mt) {
case CARD_RESET:
break;
case CARD_RELEASE:
release_io_s0box(cs);
break;
case CARD_SETIRQ:
return(request_irq(cs->irq, &s0box_interrupt,
I4L_IRQ_FLAG, "HiSax", cs));
case CARD_INIT:
inithscxisac(cs, 3);
break;
case CARD_TEST:
break;
}
return(0);
}
__initfunc(int
setup_s0box(struct IsdnCard *card))
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, s0box_revision);
printk(KERN_INFO "HiSax: S0Box IO driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_S0BOX)
return (0);
cs->hw.teles3.cfg_reg = card->para[1];
cs->hw.teles3.hscx[0] = -0x20;
cs->hw.teles3.hscx[1] = 0x0;
cs->hw.teles3.isac = 0x20;
cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e;
cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e;
cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e;
cs->irq = card->para[0];
if (check_region(cs->hw.teles3.cfg_reg,8)) {
printk(KERN_WARNING
"HiSax: %s ports %x-%x already in use\n",
CardType[cs->typ],
cs->hw.teles3.cfg_reg,
cs->hw.teles3.cfg_reg + 7);
return 0;
} else
request_region(cs->hw.teles3.cfg_reg, 8, "S0Box parallel I/O");
printk(KERN_INFO
"HiSax: %s config irq:%d isac:0x%x cfg:0x%x\n",
CardType[cs->typ], cs->irq,
cs->hw.teles3.isac, cs->hw.teles3.cfg_reg);
printk(KERN_INFO
"HiSax: hscx A:0x%x hscx B:0x%x\n",
cs->hw.teles3.hscx[0], cs->hw.teles3.hscx[1]);
cs->readisac = &ReadISAC;
cs->writeisac = &WriteISAC;
cs->readisacfifo = &ReadISACfifo;
cs->writeisacfifo = &WriteISACfifo;
cs->BC_Read_Reg = &ReadHSCX;
cs->BC_Write_Reg = &WriteHSCX;
cs->BC_Send_Data = &hscx_fill_fifo;
cs->cardmsg = &S0Box_card_msg;
ISACVersion(cs, "S0Box:");
if (HscxVersion(cs, "S0Box:")) {
printk(KERN_WARNING
"S0Box: wrong HSCX versions check IO address\n");
release_io_s0box(cs);
return (0);
}
return (1);
}
