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linux/drivers/isdn/hisax/ix1_micro.c

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/* $Id: ix1_micro.c,v 2.12.2.4 2004/01/13 23:48:39 keil Exp $
*
* low level stuff for ITK ix1-micro Rev.2 isdn cards
* derived from the original file teles3.c from Karsten Keil
*
* Author Klaus-Peter Nischke
* Copyright by Klaus-Peter Nischke, ITK AG
* <klaus@nischke.do.eunet.de>
* 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.
*
* Klaus-Peter Nischke
* Deusener Str. 287
* 44369 Dortmund
* Germany
*/
#include <linux/init.h>
#include <linux/isapnp.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
static const char *ix1_revision = "$Revision: 2.12.2.4 $";
#define byteout(addr, val) outb(val, addr)
#define bytein(addr) inb(addr)
#define SPECIAL_PORT_OFFSET 3
#define ISAC_COMMAND_OFFSET 2
#define ISAC_DATA_OFFSET 0
#define HSCX_COMMAND_OFFSET 2
#define HSCX_DATA_OFFSET 1
#define TIMEOUT 50
static inline u_char
readreg(unsigned int ale, unsigned int adr, u_char off)
{
register u_char ret;
byteout(ale, off);
ret = bytein(adr);
return (ret);
}
static inline void
readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
byteout(ale, off);
insb(adr, data, size);
}
static inline void
writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
{
byteout(ale, off);
byteout(adr, data);
}
static inline void
writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
byteout(ale, off);
outsb(adr, data, size);
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
return (readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
readfifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
writefifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (readreg(cs->hw.ix1.hscx_ale,
cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0)));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
writereg(cs->hw.ix1.hscx_ale,
cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0), value);
}
#define READHSCX(cs, nr, reg) readreg(cs->hw.ix1.hscx_ale, \
cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0))
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ix1.hscx_ale, \
cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0), data)
#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ix1.hscx_ale, \
cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ix1.hscx_ale, \
cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
ix1micro_interrupt(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
Start_HSCX:
if (val)
hscx_int_main(cs, val);
val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
Start_ISAC:
if (val)
isac_interrupt(cs, val);
val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
if (val) {
if (cs->debug & L1_DEB_HSCX)
debugl1(cs, "HSCX IntStat after IntRoutine");
goto Start_HSCX;
}
val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
if (val) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0xFF);
writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0xFF);
writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0xFF);
writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0);
writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0);
writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
release_io_ix1micro(struct IsdnCardState *cs)
{
if (cs->hw.ix1.cfg_reg)
release_region(cs->hw.ix1.cfg_reg, 4);
}
static void
ix1_reset(struct IsdnCardState *cs)
{
int cnt;
/* reset isac */
cnt = 3 * (HZ / 10) + 1;
while (cnt--) {
byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 1);
HZDELAY(1); /* wait >=10 ms */
}
byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 0);
}
static int
ix1_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
ix1_reset(cs);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_RELEASE:
release_io_ix1micro(cs);
return (0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
ix1_reset(cs);
inithscxisac(cs, 3);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_TEST:
return (0);
}
return (0);
}
#ifdef __ISAPNP__
static struct isapnp_device_id itk_ids[] = {
{ ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
(unsigned long) "ITK micro 2" },
{ ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
(unsigned long) "ITK micro 2." },
{ 0, }
};
static struct isapnp_device_id *ipid = &itk_ids[0];
static struct pnp_card *pnp_c = NULL;
#endif
int setup_ix1micro(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, ix1_revision);
printk(KERN_INFO "HiSax: ITK IX1 driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_IX1MICROR2)
return (0);
#ifdef __ISAPNP__
if (!card->para[1] && isapnp_present()) {
struct pnp_dev *pnp_d;
while (ipid->card_vendor) {
if ((pnp_c = pnp_find_card(ipid->card_vendor,
ipid->card_device, pnp_c))) {
pnp_d = NULL;
if ((pnp_d = pnp_find_dev(pnp_c,
ipid->vendor, ipid->function, pnp_d))) {
int err;
printk(KERN_INFO "HiSax: %s detected\n",
(char *)ipid->driver_data);
pnp_disable_dev(pnp_d);
err = pnp_activate_dev(pnp_d);
if (err < 0) {
printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
__func__, err);
return (0);
}
card->para[1] = pnp_port_start(pnp_d, 0);
card->para[0] = pnp_irq(pnp_d, 0);
if (!card->para[0] || !card->para[1]) {
printk(KERN_ERR "ITK PnP:some resources are missing %ld/%lx\n",
card->para[0], card->para[1]);
pnp_disable_dev(pnp_d);
return (0);
}
break;
} else {
printk(KERN_ERR "ITK PnP: PnP error card found, no device\n");
}
}
ipid++;
pnp_c = NULL;
}
if (!ipid->card_vendor) {
printk(KERN_INFO "ITK PnP: no ISAPnP card found\n");
return (0);
}
}
#endif
/* IO-Ports */
cs->hw.ix1.isac_ale = card->para[1] + ISAC_COMMAND_OFFSET;
cs->hw.ix1.hscx_ale = card->para[1] + HSCX_COMMAND_OFFSET;
cs->hw.ix1.isac = card->para[1] + ISAC_DATA_OFFSET;
cs->hw.ix1.hscx = card->para[1] + HSCX_DATA_OFFSET;
cs->hw.ix1.cfg_reg = card->para[1];
cs->irq = card->para[0];
if (cs->hw.ix1.cfg_reg) {
if (!request_region(cs->hw.ix1.cfg_reg, 4, "ix1micro cfg")) {
printk(KERN_WARNING
"HiSax: ITK ix1-micro Rev.2 config port "
"%x-%x already in use\n",
cs->hw.ix1.cfg_reg,
cs->hw.ix1.cfg_reg + 4);
return (0);
}
}
printk(KERN_INFO "HiSax: ITK ix1-micro Rev.2 config irq:%d io:0x%X\n",
cs->irq, cs->hw.ix1.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 = &ix1_card_msg;
cs->irq_func = &ix1micro_interrupt;
ISACVersion(cs, "ix1-Micro:");
if (HscxVersion(cs, "ix1-Micro:")) {
printk(KERN_WARNING
"ix1-Micro: wrong HSCX versions check IO address\n");
release_io_ix1micro(cs);
return (0);
}
return (1);
}
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