/* $Id: gazel.c,v 2.19.2.4 2004/01/14 16:04:48 keil Exp $
*
* low level stuff for Gazel isdn cards
*
* Author BeWan Systems
* based on source code from Karsten Keil
* Copyright by BeWan Systems
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
#include "ipac.h"
#include <linux/pci.h>
static const char *gazel_revision = "$Revision: 2.19.2.4 $";
#define R647 1
#define R685 2
#define R753 3
#define R742 4
#define PLX_CNTRL 0x50 /* registre de controle PLX */
#define RESET_GAZEL 0x4
#define RESET_9050 0x40000000
#define PLX_INCSR 0x4C /* registre d'IT du 9050 */
#define INT_ISAC_EN 0x8 /* 1 = enable IT isac */
#define INT_ISAC 0x20 /* 1 = IT isac en cours */
#define INT_HSCX_EN 0x1 /* 1 = enable IT hscx */
#define INT_HSCX 0x4 /* 1 = IT hscx en cours */
#define INT_PCI_EN 0x40 /* 1 = enable IT PCI */
#define INT_IPAC_EN 0x3 /* enable IT ipac */
#define byteout(addr,val) outb(val,addr)
#define bytein(addr) inb(addr)
static inline u_char
readreg(unsigned int adr, u_short off)
{
return bytein(adr + off);
}
static inline void
writereg(unsigned int adr, u_short off, u_char data)
{
byteout(adr + off, data);
}
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);
}
static inline u_char
readreg_ipac(unsigned int adr, u_short off)
{
register u_char ret;
byteout(adr, off);
ret = bytein(adr + 4);
return ret;
}
static inline void
writereg_ipac(unsigned int adr, u_short off, u_char data)
{
byteout(adr, off);
byteout(adr + 4, data);
}
static inline void
read_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
{
byteout(adr, off);
insb(adr + 4, data, size);
}
static void
write_fifo_ipac(unsigned int adr, u_short off, u_char * data, int size)
{
byteout(adr, off);
outsb(adr + 4, data, size);
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
u_short off2 = offset;
switch (cs->subtyp) {
case R647:
off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
case R685:
return (readreg(cs->hw.gazel.isac, off2));
case R753:
case R742:
return (readreg_ipac(cs->hw.gazel.ipac, 0x80 + off2));
}
return 0;
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
u_short off2 = offset;
switch (cs->subtyp) {
case R647:
off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
case R685:
writereg(cs->hw.gazel.isac, off2, value);
break;
case R753:
case R742:
writereg_ipac(cs->hw.gazel.ipac, 0x80 + off2, value);
break;
}
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
switch (cs->subtyp) {
case R647:
case R685:
read_fifo(cs->hw.gazel.isacfifo, data, size);
break;
case R753:
case R742:
read_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
break;
}
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
switch (cs->subtyp) {
case R647:
case R685:
write_fifo(cs->hw.gazel.isacfifo, data, size);
break;
case R753:
case R742:
write_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size);
break;
}
}
static void
ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
{
switch (cs->subtyp) {
case R647:
case R685:
read_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
break;
case R753:
case R742:
read_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
break;
}
}
static void
WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char * data, int size)
{
switch (cs->subtyp) {
case R647:
case R685:
write_fifo(cs->hw.gazel.hscxfifo[hscx], data, size);
break;
case R753:
case R742:
write_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size);
break;
}
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
u_short off2 = offset;
switch (cs->subtyp) {
case R647:
off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
case R685:
return (readreg(cs->hw.gazel.hscx[hscx], off2));
case R753:
case R742:
return (readreg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2));
}
return 0;
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
u_short off2 = offset;
switch (cs->subtyp) {
case R647:
off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf));
case R685:
writereg(cs->hw.gazel.hscx[hscx], off2, value);
break;
case R753:
case R742:
writereg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2, value);
break;
}
}
/*
* fast interrupt HSCX stuff goes here
*/
#define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg)
#define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data)
#define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
gazel_interrupt(int intno, void *dev_id)
{
#define MAXCOUNT 5
struct IsdnCardState *cs = dev_id;
u_char valisac, valhscx;
int count = 0;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
do {
valhscx = ReadHSCX(cs, 1, HSCX_ISTA);
if (valhscx)
hscx_int_main(cs, valhscx);
valisac = ReadISAC(cs, ISAC_ISTA);
if (valisac)
isac_interrupt(cs, valisac);
count++;
} while ((valhscx || valisac) && (count < MAXCOUNT));
WriteHSCX(cs, 0, HSCX_MASK, 0xFF);
WriteHSCX(cs, 1, HSCX_MASK, 0xFF);
WriteISAC(cs, ISAC_MASK, 0xFF);
WriteISAC(cs, ISAC_MASK, 0x0);
WriteHSCX(cs, 0, HSCX_MASK, 0x0);
WriteHSCX(cs, 1, HSCX_MASK, 0x0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t
gazel_interrupt_ipac(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char ista, val;
int count = 0;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
ista = ReadISAC(cs, IPAC_ISTA - 0x80);
do {
if (ista & 0x0f) {
val = ReadHSCX(cs, 1, HSCX_ISTA);
if (ista & 0x01)
val |= 0x01;
if (ista & 0x04)
val |= 0x02;
if (ista & 0x08)
val |= 0x04;
if (val) {
hscx_int_main(cs, val);
}
}
if (ista & 0x20) {
val = 0xfe & ReadISAC(cs, ISAC_ISTA);
if (val) {
isac_interrupt(cs, val);
}
}
if (ista & 0x10) {
val = 0x01;
isac_interrupt(cs, val);
}
ista = ReadISAC(cs, IPAC_ISTA - 0x80);
count++;
}
while ((ista & 0x3f) && (count < MAXCOUNT));
WriteISAC(cs, IPAC_MASK - 0x80, 0xFF);
WriteISAC(cs, IPAC_MASK - 0x80, 0xC0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
release_io_gazel(struct IsdnCardState *cs)
{
unsigned int i;
switch (cs->subtyp) {
case R647:
for (i = 0x0000; i < 0xC000; i += 0x1000)
release_region(i + cs->hw.gazel.hscx[0], 16);
release_region(0xC000 + cs->hw.gazel.hscx[0], 1);
break;
case R685:
release_region(cs->hw.gazel.hscx[0], 0x100);
release_region(cs->hw.gazel.cfg_reg, 0x80);
break;
case R753:
release_region(cs->hw.gazel.ipac, 0x8);
release_region(cs->hw.gazel.cfg_reg, 0x80);
break;
case R742:
release_region(cs->hw.gazel.ipac, 8);
break;
}
}
static int
reset_gazel(struct IsdnCardState *cs)
{
unsigned long plxcntrl, addr = cs->hw.gazel.cfg_reg;
switch (cs->subtyp) {
case R647:
writereg(addr, 0, 0);
HZDELAY(10);
writereg(addr, 0, 1);
HZDELAY(2);
break;
case R685:
plxcntrl = inl(addr + PLX_CNTRL);
plxcntrl |= (RESET_9050 + RESET_GAZEL);
outl(plxcntrl, addr + PLX_CNTRL);
plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
HZDELAY(4);
outl(plxcntrl, addr + PLX_CNTRL);
HZDELAY(10);
outb(INT_ISAC_EN + INT_HSCX_EN + INT_PCI_EN, addr + PLX_INCSR);
break;
case R753:
plxcntrl = inl(addr + PLX_CNTRL);
plxcntrl |= (RESET_9050 + RESET_GAZEL);
outl(plxcntrl, addr + PLX_CNTRL);
plxcntrl &= ~(RESET_9050 + RESET_GAZEL);
WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
HZDELAY(4);
outl(plxcntrl, addr + PLX_CNTRL);
HZDELAY(10);
WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
outb(INT_IPAC_EN + INT_PCI_EN, addr + PLX_INCSR);
WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
break;
case R742:
WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20);
HZDELAY(4);
WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00);
WriteISAC(cs, IPAC_ACFG - 0x80, 0xff);
WriteISAC(cs, IPAC_AOE - 0x80, 0x0);
WriteISAC(cs, IPAC_MASK - 0x80, 0xff);
WriteISAC(cs, IPAC_CONF - 0x80, 0x1);
WriteISAC(cs, IPAC_MASK - 0x80, 0xc0);
break;
}
return (0);
}
static int
Gazel_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
reset_gazel(cs);
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_RELEASE:
release_io_gazel(cs);
return (0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
inithscxisac(cs, 1);
if ((cs->subtyp==R647)||(cs->subtyp==R685)) {
int i;
for (i=0;i<(2+MAX_WAITING_CALLS);i++) {
cs->bcs[i].hw.hscx.tsaxr0 = 0x1f;
cs->bcs[i].hw.hscx.tsaxr1 = 0x23;
}
}
spin_unlock_irqrestore(&cs->lock, flags);
return (0);
case CARD_TEST:
return (0);
}
return (0);
}
static int
reserve_regions(struct IsdnCard *card, struct IsdnCardState *cs)
{
unsigned int i, j, base = 0, adr = 0, len = 0;
switch (cs->subtyp) {
case R647:
base = cs->hw.gazel.hscx[0];
if (!request_region(adr = (0xC000 + base), len = 1, "gazel"))
goto error;
for (i = 0x0000; i < 0xC000; i += 0x1000) {
if (!request_region(adr = (i + base), len = 16, "gazel"))
goto error;
}
if (i != 0xC000) {
for (j = 0; j < i; j+= 0x1000)
release_region(j + base, 16);
release_region(0xC000 + base, 1);
goto error;
}
break;
case R685:
if (!request_region(adr = cs->hw.gazel.hscx[0], len = 0x100, "gazel"))
goto error;
if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
release_region(cs->hw.gazel.hscx[0],0x100);
goto error;
}
break;
case R753:
if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
goto error;
if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) {
release_region(cs->hw.gazel.ipac, 8);
goto error;
}
break;
case R742:
if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel"))
goto error;
break;
}
return 0;
error:
printk(KERN_WARNING "Gazel: io ports 0x%x-0x%x already in use\n",
adr, adr + len);
return 1;
}
static int __devinit
setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
{
printk(KERN_INFO "Gazel: ISA PnP card automatic recognition\n");
// we got an irq parameter, assume it is an ISA card
// R742 decodes address even in not started...
// R647 returns FF if not present or not started
// eventually needs improvment
if (readreg_ipac(card->para[1], IPAC_ID) == 1)
cs->subtyp = R742;
else
cs->subtyp = R647;
setup_isac(cs);
cs->hw.gazel.cfg_reg = card->para[1] + 0xC000;
cs->hw.gazel.ipac = card->para[1];
cs->hw.gazel.isac = card->para[1] + 0x8000;
cs->hw.gazel.hscx[0] = card->para[1];
cs->hw.gazel.hscx[1] = card->para[1] + 0x4000;
cs->irq = card->para[0];
cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
switch (cs->subtyp) {
case R647:
printk(KERN_INFO "Gazel: Card ISA R647/R648 found\n");
cs->dc.isac.adf2 = 0x87;
printk(KERN_INFO
"Gazel: config irq:%d isac:0x%X cfg:0x%X\n",
cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
printk(KERN_INFO
"Gazel: hscx A:0x%X hscx B:0x%X\n",
cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
break;
case R742:
printk(KERN_INFO "Gazel: Card ISA R742 found\n");
test_and_set_bit(HW_IPAC, &cs->HW_Flags);
printk(KERN_INFO
"Gazel: config irq:%d ipac:0x%X\n",
cs->irq, cs->hw.gazel.ipac);
break;
}
return (0);
}
#ifdef CONFIG_PCI
static struct pci_dev *dev_tel __devinitdata = NULL;
static int __devinit
setup_gazelpci(struct IsdnCardState *cs)
{
u_int pci_ioaddr0 = 0, pci_ioaddr1 = 0;
u_char pci_irq = 0, found;
u_int nbseek, seekcard;
printk(KERN_WARNING "Gazel: PCI card automatic recognition\n");
found = 0;
seekcard = PCI_DEVICE_ID_PLX_R685;
for (nbseek = 0; nbseek < 4; nbseek++) {
if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
seekcard, dev_tel))) {
if (pci_enable_device(dev_tel))
return 1;
pci_irq = dev_tel->irq;
pci_ioaddr0 = pci_resource_start(dev_tel, 1);
pci_ioaddr1 = pci_resource_start(dev_tel, 2);
found = 1;
}
if (found)
break;
else {
switch (seekcard) {
case PCI_DEVICE_ID_PLX_R685:
seekcard = PCI_DEVICE_ID_PLX_R753;
break;
case PCI_DEVICE_ID_PLX_R753:
seekcard = PCI_DEVICE_ID_PLX_DJINN_ITOO;
break;
case PCI_DEVICE_ID_PLX_DJINN_ITOO:
seekcard = PCI_DEVICE_ID_PLX_OLITEC;
break;
}
}
}
if (!found) {
printk(KERN_WARNING "Gazel: No PCI card found\n");
return (1);
}
if (!pci_irq) {
printk(KERN_WARNING "Gazel: No IRQ for PCI card found\n");
return 1;
}
cs->hw.gazel.pciaddr[0] = pci_ioaddr0;
cs->hw.gazel.pciaddr[1] = pci_ioaddr1;
setup_isac(cs);
pci_ioaddr1 &= 0xfffe;
cs->hw.gazel.cfg_reg = pci_ioaddr0 & 0xfffe;
cs->hw.gazel.ipac = pci_ioaddr1;
cs->hw.gazel.isac = pci_ioaddr1 + 0x80;
cs->hw.gazel.hscx[0] = pci_ioaddr1;
cs->hw.gazel.hscx[1] = pci_ioaddr1 + 0x40;
cs->hw.gazel.isacfifo = cs->hw.gazel.isac;
cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0];
cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1];
cs->irq = pci_irq;
cs->irq_flags |= IRQF_SHARED;
switch (seekcard) {
case PCI_DEVICE_ID_PLX_R685:
printk(KERN_INFO "Gazel: Card PCI R685 found\n");
cs->subtyp = R685;
cs->dc.isac.adf2 = 0x87;
printk(KERN_INFO
"Gazel: config irq:%d isac:0x%X cfg:0x%X\n",
cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg);
printk(KERN_INFO
"Gazel: hscx A:0x%X hscx B:0x%X\n",
cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]);
break;
case PCI_DEVICE_ID_PLX_R753:
case PCI_DEVICE_ID_PLX_DJINN_ITOO:
case PCI_DEVICE_ID_PLX_OLITEC:
printk(KERN_INFO "Gazel: Card PCI R753 found\n");
cs->subtyp = R753;
test_and_set_bit(HW_IPAC, &cs->HW_Flags);
printk(KERN_INFO
"Gazel: config irq:%d ipac:0x%X cfg:0x%X\n",
cs->irq, cs->hw.gazel.ipac, cs->hw.gazel.cfg_reg);
break;
}
return (0);
}
#endif /* CONFIG_PCI */
int __devinit
setup_gazel(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
u_char val;
strcpy(tmp, gazel_revision);
printk(KERN_INFO "Gazel: Driver Revision %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_GAZEL)
return (0);
if (card->para[0]) {
if (setup_gazelisa(card, cs))
return (0);
} else {
#ifdef CONFIG_PCI
if (setup_gazelpci(cs))
return (0);
#else
printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
return (0);
#endif /* CONFIG_PCI */
}
if (reserve_regions(card, cs)) {
return (0);
}
if (reset_gazel(cs)) {
printk(KERN_WARNING "Gazel: wrong IRQ\n");
release_io_gazel(cs);
return (0);
}
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 = &Gazel_card_msg;
switch (cs->subtyp) {
case R647:
case R685:
cs->irq_func = &gazel_interrupt;
ISACVersion(cs, "Gazel:");
if (HscxVersion(cs, "Gazel:")) {
printk(KERN_WARNING
"Gazel: wrong HSCX versions check IO address\n");
release_io_gazel(cs);
return (0);
}
break;
case R742:
case R753:
cs->irq_func = &gazel_interrupt_ipac;
val = ReadISAC(cs, IPAC_ID - 0x80);
printk(KERN_INFO "Gazel: IPAC version %x\n", val);
break;
}
return (1);
}