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linux-next/drivers/isdn/hisax/avm_a1.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: avm_a1.c,v 2.15.2.4 2004/01/13 21:46:03 keil Exp $
*
* low level stuff for AVM A1 (Fritz) isdn cards
*
* 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.
*
*/
#include <linux/init.h>
#include "hisax.h"
#include "isac.h"
#include "hscx.h"
#include "isdnl1.h"
static const char *avm_revision = "$Revision: 2.15.2.4 $";
#define AVM_A1_STAT_ISAC 0x01
#define AVM_A1_STAT_HSCX 0x02
#define AVM_A1_STAT_TIMER 0x04
#define byteout(addr,val) outb(val,addr)
#define bytein(addr) inb(addr)
static inline u_char
readreg(unsigned int adr, u_char off)
{
return (bytein(adr + off));
}
static inline void
writereg(unsigned int adr, u_char 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);
}
/* Interface functions */
static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
return (readreg(cs->hw.avm.isac, offset));
}
static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
writereg(cs->hw.avm.isac, offset, value);
}
static void
ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
read_fifo(cs->hw.avm.isacfifo, data, size);
}
static void
WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
{
write_fifo(cs->hw.avm.isacfifo, data, size);
}
static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
return (readreg(cs->hw.avm.hscx[hscx], offset));
}
static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
writereg(cs->hw.avm.hscx[hscx], offset, value);
}
/*
* fast interrupt HSCX stuff goes here
*/
#define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
#include "hscx_irq.c"
static irqreturn_t
avm_a1_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)) & 0xf) != 0x7) {
if (!(sval & AVM_A1_STAT_TIMER)) {
byteout(cs->hw.avm.cfg_reg, 0x1E);
sval = bytein(cs->hw.avm.cfg_reg);
} else if (cs->debug & L1_DEB_INTSTAT)
debugl1(cs, "avm IntStatus %x", sval);
if (!(sval & AVM_A1_STAT_HSCX)) {
val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
if (val)
hscx_int_main(cs, val);
}
if (!(sval & AVM_A1_STAT_ISAC)) {
val = readreg(cs->hw.avm.isac, ISAC_ISTA);
if (val)
isac_interrupt(cs, val);
}
}
writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
spin_unlock_irqrestore(&cs->lock, flags);
return IRQ_HANDLED;
}
static inline void
release_ioregs(struct IsdnCardState *cs, int mask)
{
release_region(cs->hw.avm.cfg_reg, 8);
if (mask & 1)
release_region(cs->hw.avm.isac + 32, 32);
if (mask & 2)
release_region(cs->hw.avm.isacfifo, 1);
if (mask & 4)
release_region(cs->hw.avm.hscx[0] + 32, 32);
if (mask & 8)
release_region(cs->hw.avm.hscxfifo[0], 1);
if (mask & 0x10)
release_region(cs->hw.avm.hscx[1] + 32, 32);
if (mask & 0x20)
release_region(cs->hw.avm.hscxfifo[1], 1);
}
static int
AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
u_long flags;
switch (mt) {
case CARD_RESET:
return(0);
case CARD_RELEASE:
release_ioregs(cs, 0x3f);
return(0);
case CARD_INIT:
spin_lock_irqsave(&cs->lock, flags);
inithscxisac(cs, 1);
byteout(cs->hw.avm.cfg_reg, 0x16);
byteout(cs->hw.avm.cfg_reg, 0x1E);
inithscxisac(cs, 2);
spin_unlock_irqrestore(&cs->lock, flags);
return(0);
case CARD_TEST:
return(0);
}
return(0);
}
int __devinit
setup_avm_a1(struct IsdnCard *card)
{
u_char val;
struct IsdnCardState *cs = card->cs;
char tmp[64];
strcpy(tmp, avm_revision);
printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_A1)
return (0);
cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
cs->hw.avm.isacfifo = card->para[1] + 0x1000;
cs->hw.avm.hscxfifo[0] = card->para[1];
cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
cs->irq = card->para[0];
if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
printk(KERN_WARNING
"HiSax: AVM A1 config port %x-%x already in use\n",
cs->hw.avm.cfg_reg,
cs->hw.avm.cfg_reg + 8);
return (0);
}
if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
printk(KERN_WARNING
"HiSax: AVM A1 isac ports %x-%x already in use\n",
cs->hw.avm.isac + 32,
cs->hw.avm.isac + 64);
release_ioregs(cs, 0);
return (0);
}
if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
printk(KERN_WARNING
"HiSax: AVM A1 isac fifo port %x already in use\n",
cs->hw.avm.isacfifo);
release_ioregs(cs, 1);
return (0);
}
if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
printk(KERN_WARNING
"HiSax: AVM A1 hscx A ports %x-%x already in use\n",
cs->hw.avm.hscx[0] + 32,
cs->hw.avm.hscx[0] + 64);
release_ioregs(cs, 3);
return (0);
}
if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
printk(KERN_WARNING
"HiSax: AVM A1 hscx A fifo port %x already in use\n",
cs->hw.avm.hscxfifo[0]);
release_ioregs(cs, 7);
return (0);
}
if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
printk(KERN_WARNING
"HiSax: AVM A1 hscx B ports %x-%x already in use\n",
cs->hw.avm.hscx[1] + 32,
cs->hw.avm.hscx[1] + 64);
release_ioregs(cs, 0xf);
return (0);
}
if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
printk(KERN_WARNING
"HiSax: AVM A1 hscx B fifo port %x already in use\n",
cs->hw.avm.hscxfifo[1]);
release_ioregs(cs, 0x1f);
return (0);
}
byteout(cs->hw.avm.cfg_reg, 0x0);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg, 0x1);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg, 0x0);
HZDELAY(HZ / 5 + 1);
val = cs->irq;
if (val == 9)
val = 2;
byteout(cs->hw.avm.cfg_reg + 1, val);
HZDELAY(HZ / 5 + 1);
byteout(cs->hw.avm.cfg_reg, 0x0);
HZDELAY(HZ / 5 + 1);
val = bytein(cs->hw.avm.cfg_reg);
printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
cs->hw.avm.cfg_reg, val);
val = bytein(cs->hw.avm.cfg_reg + 3);
printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
cs->hw.avm.cfg_reg + 3, val);
val = bytein(cs->hw.avm.cfg_reg + 2);
printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
cs->hw.avm.cfg_reg + 2, val);
val = bytein(cs->hw.avm.cfg_reg);
printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
cs->hw.avm.cfg_reg, val);
printk(KERN_INFO "HiSax: AVM A1 config irq:%d cfg:0x%X\n",
cs->irq,
cs->hw.avm.cfg_reg);
printk(KERN_INFO
"HiSax: isac:0x%X/0x%X\n",
cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
printk(KERN_INFO
"HiSax: hscx A:0x%X/0x%X hscx B:0x%X/0x%X\n",
cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
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;
setup_isac(cs);
cs->cardmsg = &AVM_card_msg;
cs->irq_func = &avm_a1_interrupt;
ISACVersion(cs, "AVM A1:");
if (HscxVersion(cs, "AVM A1:")) {
printk(KERN_WARNING
"AVM A1: wrong HSCX versions check IO address\n");
release_ioregs(cs, 0x3f);
return (0);
}
return (1);
}
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