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linux-pinenote/drivers/isdn/hisax/saphir.c
Jeff Garzik 8349304d12 [ISDN] Hisax: eliminate many unnecessary references to CardType[] 
For the vast majority of CardType[card->typ] uses (but not all!),
the string is constant for each driver.  Therefore, we may replace
CardType[card->typ] with the actual string describing the driver, making
each printk() a bit more simple.

This also has the nice, intended side effect of greatly reducing
external references to hisax global CardType[].  This will be of value
once the ISDN drivers are converted to the ISA/PCI/PNP hotplug APIs.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-20 18:22:31 -04:00

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/* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
*
* low level stuff for HST Saphir 1
*
* 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 HST High Soft Tech GmbH
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
static char *saphir_rev = "$Revision: 1.10.2.4 $";
#define byteout(addr,val) outb(val,addr)
#define bytein(addr) inb(addr)
#define ISAC_DATA 0
#define HSCX_DATA 1
#define ADDRESS_REG 2
#define IRQ_REG 3
#define SPARE_REG 4
#define RESET_REG 5
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.saphir.ale, cs->hw.saphir.isac, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
offset + (hscx ? 0x40 : 0)));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
offset + (hscx ? 0x40 : 0), value);
}
#define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
saphir_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.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
Start_HSCX:
if (val)
hscx_int_main(cs, val);
val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
Start_ISAC:
if (val)
isac_interrupt(cs, val);
val = readreg(cs->hw.saphir.ale, cs->hw.saphir.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.saphir.ale, cs->hw.saphir.isac, ISAC_ISTA);
if (val) {
if (cs->debug & L1_DEB_ISAC)
debugl1(cs, "ISAC IntStat after IntRoutine");
goto Start_ISAC;
}
/* Watchdog */
if (cs->hw.saphir.timer.function)
mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
else
printk(KERN_WARNING "saphir: Spurious timer!\n");
writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static void
SaphirWatchDog(struct IsdnCardState *cs)
{
u_long flags;
spin_lock_irqsave(&cs->lock, flags);
/* 5 sec WatchDog, so read at least every 4 sec */
cs->readisac(cs, ISAC_RBCH);
spin_unlock_irqrestore(&cs->lock, flags);
mod_timer(&cs->hw.saphir.timer, jiffies+1*HZ);
}
static void
release_io_saphir(struct IsdnCardState *cs)
{
byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
del_timer(&cs->hw.saphir.timer);
cs->hw.saphir.timer.function = NULL;
if (cs->hw.saphir.cfg_reg)
release_region(cs->hw.saphir.cfg_reg, 6);
}
static int
saphir_reset(struct IsdnCardState *cs)
{
u_char irq_val;
switch(cs->irq) {
case 5: irq_val = 0;
break;
case 3: irq_val = 1;
break;
case 11:
irq_val = 2;
break;
case 12:
irq_val = 3;
break;
case 15:
irq_val = 4;
break;
default:
printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
cs->irq);
return (1);
}
byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
mdelay(10);
byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
mdelay(10);
byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
return (0);
}
static int
saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
spin_lock_irqsave(&cs->lock, flags);
saphir_reset(cs);
spin_unlock_irqrestore(&cs->lock, flags);
return(0);
case CARD_RELEASE:
release_io_saphir(cs);
return(0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
inithscxisac(cs, 3);
spin_unlock_irqrestore(&cs->lock, flags);
return(0);
case CARD_TEST:
return(0);
}
return(0);
}
int __devinit
setup_saphir(struct IsdnCard *card)
{
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, saphir_rev);
printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
return (0);
/* IO-Ports */
cs->hw.saphir.cfg_reg = card->para[1];
cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
cs->irq = card->para[0];
if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
printk(KERN_WARNING
"HiSax: HST Saphir config port %x-%x already in use\n",
cs->hw.saphir.cfg_reg,
cs->hw.saphir.cfg_reg + 5);
return (0);
}
printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
cs->irq, cs->hw.saphir.cfg_reg);
setup_isac(cs);
cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
cs->hw.saphir.timer.data = (long) cs;
init_timer(&cs->hw.saphir.timer);
cs->hw.saphir.timer.expires = jiffies + 4*HZ;
add_timer(&cs->hw.saphir.timer);
if (saphir_reset(cs)) {
release_io_saphir(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 = &saphir_card_msg;
cs->irq_func = &saphir_interrupt;
ISACVersion(cs, "saphir:");
if (HscxVersion(cs, "saphir:")) {
printk(KERN_WARNING
"saphir: wrong HSCX versions check IO address\n");
release_io_saphir(cs);
return (0);
}
return (1);
}
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