/* $Id: avm_a1p.c,v 2.7.6.2 2001/09/23 22:24:46 kai 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: 2.7.6.2 $";
static spinlock_t avm_a1p_lock = SPIN_LOCK_UNLOCKED;
static inline u8
readreg(struct IsdnCardState *cs, int offset, u8 adr)
{
unsigned long flags;
u8 ret;
spin_lock_irqsave(&avm_a1p_lock, flags);
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, offset + adr - 0x20);
ret = bytein(cs->hw.avm.cfg_reg + DATAREG_OFFSET);
spin_unlock_irqrestore(&avm_a1p_lock, flags);
return ret;
}
static inline void
writereg(struct IsdnCardState *cs, int offset, u8 adr, u8 value)
{
unsigned long flags;
spin_lock_irqsave(&avm_a1p_lock, flags);
byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET, offset + adr - 0x20);
byteout(cs->hw.avm.cfg_reg+DATAREG_OFFSET, value);
spin_unlock_irqrestore(&avm_a1p_lock, flags);
}
static inline void
readfifo(struct IsdnCardState *cs, int offset, u8 *data, int size)
{
byteout(cs->hw.avm.cfg_reg + ADDRREG_OFFSET, offset);
insb(cs->hw.avm.cfg_reg + DATAREG_OFFSET, data, size);
}
static inline void
writefifo(struct IsdnCardState *cs, int offset, u8 *data, int size)
{
byteout(cs->hw.avm.cfg_reg+ADDRREG_OFFSET, offset);
outsb(cs->hw.avm.cfg_reg+DATAREG_OFFSET, data, size);
}
static u8
isac_read(struct IsdnCardState *cs, u8 adr)
{
return readreg(cs, ISAC_REG_OFFSET, adr);
}
static void
isac_write(struct IsdnCardState *cs, u8 adr, u8 value)
{
writereg(cs, ISAC_REG_OFFSET, adr, value);
}
static void
isac_read_fifo(struct IsdnCardState *cs, u8 *data, int size)
{
readfifo(cs, ISAC_FIFO_OFFSET, data, size);
}
static void
isac_write_fifo(struct IsdnCardState *cs, u8 *data, int size)
{
writefifo(cs, ISAC_FIFO_OFFSET, data, size);
}
static struct dc_hw_ops isac_ops = {
.read_reg = isac_read,
.write_reg = isac_write,
.read_fifo = isac_read_fifo,
.write_fifo = isac_write_fifo,
};
static u8
hscx_read(struct IsdnCardState *cs, int hscx, u8 adr)
{
return readreg(cs, HSCX_REG_OFFSET + hscx*HSCX_CH_DIFF, adr);
}
static void
hscx_write(struct IsdnCardState *cs, int hscx, u8 adr, u8 value)
{
writereg(cs, HSCX_REG_OFFSET + hscx*HSCX_CH_DIFF, adr, value);
}
static void
hscx_read_fifo(struct IsdnCardState *cs, int hscx, u8 *data, int size)
{
return readfifo(cs, HSCX_FIFO_OFFSET + hscx*HSCX_CH_DIFF, data, size);
}
static void
hscx_write_fifo(struct IsdnCardState *cs, int hscx, u8 *data, int size)
{
writefifo(cs, HSCX_FIFO_OFFSET + hscx*HSCX_CH_DIFF, data, size);
}
static struct bc_hw_ops hscx_ops = {
.read_reg = hscx_read,
.write_reg = hscx_write,
.read_fifo = hscx_read_fifo,
.write_fifo = hscx_write_fifo,
};
static irqreturn_t
avm_a1p_interrupt(int intno, void *dev_id, struct pt_regs *regs)
{
struct IsdnCardState *cs = dev_id;
u8 val, sval;
spin_lock(&cs->lock);
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 = hscx_read(cs, 1, HSCX_ISTA);
if (val)
hscx_int_main(cs, val);
}
if (sval & ASL0_R_ISAC) {
val = isac_read(cs, ISAC_ISTA);
if (val)
isac_interrupt(cs, val);
}
}
hscx_write(cs, 0, HSCX_MASK, 0xFF);
hscx_write(cs, 1, HSCX_MASK, 0xFF);
isac_write(cs, ISAC_MASK, 0xFF);
isac_write(cs, ISAC_MASK, 0x0);
hscx_write(cs, 0, HSCX_MASK, 0x0);
hscx_write(cs, 1, HSCX_MASK, 0x0);
spin_unlock(&cs->lock);
return IRQ_HANDLED;
}
static void
avm_a1p_init(struct IsdnCardState *cs)
{
byteout(cs->hw.avm.cfg_reg+ASL0_OFFSET,
ASL0_W_TDISABLE|ASL0_W_TRESET|ASL0_W_IRQENABLE);
inithscxisac(cs);
}
static int
avm_a1p_reset(struct IsdnCardState *cs)
{
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);
return 0;
}
static struct card_ops avm_a1p_ops = {
.init = avm_a1p_init,
.reset = avm_a1p_reset,
.irq_func = avm_a1p_interrupt,
};
static int __init
avm_a1p_probe(struct IsdnCardState *cs, struct IsdnCard *card)
{
u8 model, vers;
cs->irq = card->para[0];
cs->hw.avm.cfg_reg = card->para[1];
outb(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);
cs->card_ops = &avm_a1p_ops;
if (hscxisac_setup(cs, &isac_ops, &hscx_ops))
goto err;
return 0;
err:
hisax_release_resources(cs);
return -EBUSY;
}
int __devinit
setup_avm_a1_pcmcia(struct IsdnCard *card)
{
char tmp[64];
strcpy(tmp, avm_revision);
printk(KERN_INFO "HiSax: AVM A1 PCMCIA driver Rev. %s\n",
HiSax_getrev(tmp));
if (avm_a1p_probe(card->cs, card))
return 0;
return 1;
}