/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $
*
* low level stuff for USR Sportster internal TA
*
* 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 Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
*
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
static const char *sportster_revision = "$Revision: 1.16.2.4 $";
#define byteout(addr, val) outb(val, addr)
#define bytein(addr) inb(addr)
#define SPORTSTER_ISAC 0xC000
#define SPORTSTER_HSCXA 0x0000
#define SPORTSTER_HSCXB 0x4000
#define SPORTSTER_RES_IRQ 0x8000
#define SPORTSTER_RESET 0x80
#define SPORTSTER_INTE 0x40
static inline int
calc_off(unsigned int base, unsigned int off)
{
return (base + ((off & 0xfc) << 8) + ((off & 3) << 1));
}
static inline void
read_fifo(unsigned int adr, u_char *data, int size)
{
insb(adr, data, size);
}
static void
write_fifo(unsigned int adr, u_char *data, int size)
{
outsb(adr, data, size);
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
return (bytein(calc_off(cs->hw.spt.isac, offset)));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
byteout(calc_off(cs->hw.spt.isac, offset), value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
read_fifo(cs->hw.spt.isac, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
write_fifo(cs->hw.spt.isac, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset)));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
}
/*
* fast interrupt HSCX stuff goes here
*/
#define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg))
#define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data)
#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
sportster_interrupt(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
val = READHSCX(cs, 1, HSCX_ISTA);
Start_HSCX:
if (val)
hscx_int_main(cs, val);
val = ReadISAC(cs, ISAC_ISTA);
Start_ISAC:
if (val)
isac_interrupt(cs, val);
val = READHSCX(cs, 1, HSCX_ISTA);
if (val) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "HSCX IntStat after IntRoutine");
goto Start_HSCX;
}
val = ReadISAC(cs, ISAC_ISTA);
if (val) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
/* get a new irq impulse if there any pending */
bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
release_io_sportster(struct IsdnCardState *cs)
{
int i, adr;
byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
for (i = 0; i < 64; i++) {
adr = cs->hw.spt.cfg_reg + i * 1024;
release_region(adr, 8);
}
}
static void
reset_sportster(struct IsdnCardState *cs)
{
cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
mdelay(10);
cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
mdelay(10);
}
static int
Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
reset_sportster(cs);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_RELEASE:
release_io_sportster(cs);
return (0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
reset_sportster(cs);
inithscxisac(cs, 1);
cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
inithscxisac(cs, 2);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_TEST:
return (0);
}
return (0);
}
static int get_io_range(struct IsdnCardState *cs)
{
int i, j, adr;
for (i = 0; i < 64; i++) {
adr = cs->hw.spt.cfg_reg + i * 1024;
if (!request_region(adr, 8, "sportster")) {
printk(KERN_WARNING "HiSax: USR Sportster config port "
"%x-%x already in use\n",
adr, adr + 8);
break;
}
}
if (i == 64)
return (1);
else {
for (j = 0; j < i; j++) {
adr = cs->hw.spt.cfg_reg + j * 1024;
release_region(adr, 8);
}
return (0);
}
}
int setup_sportster(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, sportster_revision);
printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_SPORTSTER)
return (0);
cs->hw.spt.cfg_reg = card->para[1];
cs->irq = card->para[0];
if (!get_io_range(cs))
return (0);
cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
switch (cs->irq) {
case 5: cs->hw.spt.res_irq = 1;
break;
case 7: cs->hw.spt.res_irq = 2;
break;
case 10:cs->hw.spt.res_irq = 3;
break;
case 11:cs->hw.spt.res_irq = 4;
break;
case 12:cs->hw.spt.res_irq = 5;
break;
case 14:cs->hw.spt.res_irq = 6;
break;
case 15:cs->hw.spt.res_irq = 7;
break;
default:release_io_sportster(cs);
printk(KERN_WARNING "Sportster: wrong IRQ\n");
return (0);
}
printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n",
cs->irq, cs->hw.spt.cfg_reg);
setup_isac(cs);
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 = &Sportster_card_msg;
cs->irq_func = &sportster_interrupt;
ISACVersion(cs, "Sportster:");
if (HscxVersion(cs, "Sportster:")) {
printk(KERN_WARNING
"Sportster: wrong HSCX versions check IO address\n");
release_io_sportster(cs);
return (0);
}
return (1);
}
