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linux/drivers/isdn/hisax/avm_a1p.c

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/* $Id: avm_a1p.c,v 2.9.2.5 2004/01/24 20:47:19 keil Exp $
*
* low level stuff for the following AVM cards:
* A1 PCMCIA
* FRITZ!Card PCMCIA
* FRITZ!Card PCMCIA 2.0
*
* Author Carsten Paeth
* Copyright by Carsten Paeth <calle@calle.de>
*
* 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"
/* register offsets */
#define ADDRREG_OFFSET 0x02
#define DATAREG_OFFSET 0x03
#define ASL0_OFFSET 0x04
#define ASL1_OFFSET 0x05
#define MODREG_OFFSET 0x06
#define VERREG_OFFSET 0x07
/* address offsets */
#define ISAC_FIFO_OFFSET 0x00
#define ISAC_REG_OFFSET 0x20
#define HSCX_CH_DIFF 0x40
#define HSCX_FIFO_OFFSET 0x80
#define HSCX_REG_OFFSET 0xa0
/* read bits ASL0 */
#define ASL0_R_TIMER 0x10 /* active low */
#define ASL0_R_ISAC 0x20 /* active low */
#define ASL0_R_HSCX 0x40 /* active low */
#define ASL0_R_TESTBIT 0x80
#define ASL0_R_IRQPENDING (ASL0_R_ISAC | ASL0_R_HSCX | ASL0_R_TIMER)
/* write bits ASL0 */
#define ASL0_W_RESET 0x01
#define ASL0_W_TDISABLE 0x02
#define ASL0_W_TRESET 0x04
#define ASL0_W_IRQENABLE 0x08
#define ASL0_W_TESTBIT 0x80
/* write bits ASL1 */
#define ASL1_W_LED0 0x10
#define ASL1_W_LED1 0x20
#define ASL1_W_ENABLE_S0 0xC0
#define byteout(addr, val) outb(val, addr)
#define bytein(addr) inb(addr)
static const char *avm_revision = "$Revision: 2.9.2.5 $";
static inline u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
u_char ret;
offset -= 0x20;
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_REG_OFFSET + offset);
ret = bytein(cs->hw.avm.cfg_reg + DATAREG_OFFSET);
return ret;
}
static inline void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
offset -= 0x20;
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_REG_OFFSET + offset);
byteout(cs->hw.avm.cfg_reg + DATAREG_OFFSET, value);
}
static inline void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_FIFO_OFFSET);
insb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
}
static inline void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, ISAC_FIFO_OFFSET);
outsb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
}
static inline u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
u_char ret;
offset -= 0x20;
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
HSCX_REG_OFFSET + hscx * HSCX_CH_DIFF + offset);
ret = bytein(cs->hw.avm.cfg_reg + DATAREG_OFFSET);
return ret;
}
static inline void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
offset -= 0x20;
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
HSCX_REG_OFFSET + hscx * HSCX_CH_DIFF + offset);
byteout(cs->hw.avm.cfg_reg + DATAREG_OFFSET, value);
}
static inline void
ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
{
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
HSCX_FIFO_OFFSET + hscx * HSCX_CH_DIFF);
insb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
}
static inline void
WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size)
{
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET,
HSCX_FIFO_OFFSET + hscx * HSCX_CH_DIFF);
outsb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
}
/*
* 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
avm_a1p_interrupt(int intno, void *dev_id)
{
struct IsdnCardState *cs = dev_id;
u_char val, sval;
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
while ((sval = (~bytein(cs->hw.avm.cfg_reg + ASL0_OFFSET) & ASL0_R_IRQPENDING))) {
if (cs->debug & L1_DEB_INTSTAT)
debugl1(cs, "avm IntStatus %x", sval);
if (sval & ASL0_R_HSCX) {
val = ReadHSCX(cs, 1, HSCX_ISTA);
if (val)
hscx_int_main(cs, val);
}
if (sval & ASL0_R_ISAC) {
val = ReadISAC(cs, ISAC_ISTA);
if (val)
isac_interrupt(cs, val);
}
}
WriteHSCX(cs, 0, HSCX_MASK, 0xff);
WriteHSCX(cs, 1, HSCX_MASK, 0xff);
WriteISAC(cs, ISAC_MASK, 0xff);
WriteISAC(cs, ISAC_MASK, 0x00);
WriteHSCX(cs, 0, HSCX_MASK, 0x00);
WriteHSCX(cs, 1, HSCX_MASK, 0x00);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static int
AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_RESET);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
spin_unlock_irqrestore(&cs->lock, flags);
return 0;
case CARD_RELEASE:
/* free_irq is done in HiSax_closecard(). */
/* free_irq(cs->irq, cs); */
return 0;
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_TDISABLE | ASL0_W_TRESET | ASL0_W_IRQENABLE);
clear_pending_isac_ints(cs);
clear_pending_hscx_ints(cs);
inithscxisac(cs, 1);
inithscxisac(cs, 2);
spin_unlock_irqrestore(&cs->lock, flags);
return 0;
case CARD_TEST:
/* we really don't need it for the PCMCIA Version */
return 0;
default:
/* all card drivers ignore others, so we do the same */
return 0;
}
return 0;
}
int setup_avm_a1_pcmcia(struct IsdnCard *card)
{
u_char model, vers;
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, avm_revision);
printk(KERN_INFO "HiSax: AVM A1 PCMCIA driver Rev. %s\n",
HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_A1_PCMCIA)
return (0);
cs->hw.avm.cfg_reg = card->para[1];
cs->irq = card->para[0];
byteout(cs->hw.avm.cfg_reg + ASL1_OFFSET, ASL1_W_ENABLE_S0);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_RESET);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, 0x00);
byteout(cs->hw.avm.cfg_reg + ASL0_OFFSET, ASL0_W_TDISABLE | ASL0_W_TRESET);
model = bytein(cs->hw.avm.cfg_reg + MODREG_OFFSET);
vers = bytein(cs->hw.avm.cfg_reg + VERREG_OFFSET);
printk(KERN_INFO "AVM A1 PCMCIA: io 0x%x irq %d model %d version %d\n",
cs->hw.avm.cfg_reg, cs->irq, model, vers);
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 = &AVM_card_msg;
cs->irq_flags = IRQF_SHARED;
cs->irq_func = &avm_a1p_interrupt;
ISACVersion(cs, "AVM A1 PCMCIA:");
if (HscxVersion(cs, "AVM A1 PCMCIA:")) {
printk(KERN_WARNING
"AVM A1 PCMCIA: wrong HSCX versions check IO address\n");
return (0);
}
return (1);
}
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