399 lines
9.9 KiB
C
399 lines
9.9 KiB
C
/* $Id$
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* asuscom.c low level stuff for ASUSCOM NETWORK INC. ISDNLink cards
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*
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* Author Karsten Keil (keil@isdn4linux.de)
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*
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* Thanks to ASUSCOM NETWORK INC. Taiwan and Dynalink NL for informations
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*
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*
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* $Log$
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* Revision 1.7 1999/07/12 21:04:53 keil
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* fix race in IRQ handling
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* added watchdog for lost IRQs
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*
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* Revision 1.6 1999/07/01 08:11:18 keil
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* Common HiSax version for 2.0, 2.1, 2.2 and 2.3 kernel
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*
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* Revision 1.5 1998/11/15 23:54:19 keil
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* changes from 2.0
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*
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* Revision 1.4 1998/06/18 23:18:20 keil
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* Support for new IPAC card
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*
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* Revision 1.3 1998/04/15 16:46:53 keil
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* new init code
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*
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* Revision 1.2 1998/02/02 13:27:06 keil
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* New
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*
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*
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*/
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#define __NO_VERSION__
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#include "hisax.h"
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#include "isac.h"
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#include "ipac.h"
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#include "hscx.h"
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#include "isdnl1.h"
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extern const char *CardType[];
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const char *Asuscom_revision = "$Revision$";
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#define byteout(addr,val) outb(val,addr)
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#define bytein(addr) inb(addr)
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#define ASUS_ISAC 0
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#define ASUS_HSCX 1
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#define ASUS_ADR 2
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#define ASUS_CTRL_U7 3
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#define ASUS_CTRL_POTS 5
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#define ASUS_IPAC_ALE 0
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#define ASUS_IPAC_DATA 1
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#define ASUS_ISACHSCX 1
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#define ASUS_IPAC 2
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/* CARD_ADR (Write) */
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#define ASUS_RESET 0x80 /* Bit 7 Reset-Leitung */
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static inline u_char
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readreg(unsigned int ale, unsigned int adr, u_char off)
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{
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register u_char ret;
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long flags;
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save_flags(flags);
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cli();
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byteout(ale, off);
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ret = bytein(adr);
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restore_flags(flags);
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return (ret);
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}
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static inline void
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readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
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{
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/* fifo read without cli because it's allready done */
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byteout(ale, off);
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insb(adr, data, size);
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}
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static inline void
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writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
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{
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long flags;
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save_flags(flags);
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cli();
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byteout(ale, off);
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byteout(adr, data);
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restore_flags(flags);
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}
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static inline void
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writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
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{
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/* fifo write without cli because it's allready done */
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byteout(ale, off);
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outsb(adr, data, size);
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}
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/* Interface functions */
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static u_char
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ReadISAC(struct IsdnCardState *cs, u_char offset)
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{
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return (readreg(cs->hw.asus.adr, cs->hw.asus.isac, offset));
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}
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static void
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WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
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{
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, offset, value);
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}
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static void
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ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
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{
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readfifo(cs->hw.asus.adr, cs->hw.asus.isac, 0, data, size);
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}
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static void
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WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
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{
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writefifo(cs->hw.asus.adr, cs->hw.asus.isac, 0, data, size);
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}
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static u_char
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ReadISAC_IPAC(struct IsdnCardState *cs, u_char offset)
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{
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return (readreg(cs->hw.asus.adr, cs->hw.asus.isac, offset|0x80));
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}
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static void
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WriteISAC_IPAC(struct IsdnCardState *cs, u_char offset, u_char value)
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{
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, offset|0x80, value);
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}
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static void
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ReadISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
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{
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readfifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
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}
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static void
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WriteISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
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{
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writefifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
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}
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static u_char
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ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
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{
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return (readreg(cs->hw.asus.adr,
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cs->hw.asus.hscx, offset + (hscx ? 0x40 : 0)));
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}
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static void
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WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
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{
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writereg(cs->hw.asus.adr,
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cs->hw.asus.hscx, offset + (hscx ? 0x40 : 0), value);
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}
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/*
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* fast interrupt HSCX stuff goes here
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*/
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#define READHSCX(cs, nr, reg) readreg(cs->hw.asus.adr, \
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cs->hw.asus.hscx, reg + (nr ? 0x40 : 0))
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#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.asus.adr, \
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cs->hw.asus.hscx, reg + (nr ? 0x40 : 0), data)
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#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.asus.adr, \
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cs->hw.asus.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.asus.adr, \
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cs->hw.asus.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#include "hscx_irq.c"
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static void
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asuscom_interrupt(int intno, void *dev_id, struct pt_regs *regs)
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{
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struct IsdnCardState *cs = dev_id;
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u_char val;
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if (!cs) {
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printk(KERN_WARNING "ISDNLink: Spurious interrupt!\n");
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return;
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}
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val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
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Start_HSCX:
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if (val)
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hscx_int_main(cs, val);
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val = readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA);
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Start_ISAC:
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if (val)
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isac_interrupt(cs, val);
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val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
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if (val) {
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if (cs->debug & L1_DEB_HSCX)
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debugl1(cs, "HSCX IntStat after IntRoutine");
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goto Start_HSCX;
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}
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val = readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA);
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if (val) {
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC IntStat after IntRoutine");
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goto Start_ISAC;
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}
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writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0xFF);
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writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0xFF);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0xFF);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0x0);
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writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0x0);
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writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0x0);
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}
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static void
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asuscom_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
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{
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struct IsdnCardState *cs = dev_id;
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u_char ista, val, icnt = 5;
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if (!cs) {
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printk(KERN_WARNING "ISDNLink: Spurious interrupt!\n");
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return;
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}
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ista = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
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Start_IPAC:
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if (cs->debug & L1_DEB_IPAC)
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debugl1(cs, "IPAC ISTA %02X", ista);
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if (ista & 0x0f) {
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val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
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if (ista & 0x01)
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val |= 0x01;
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if (ista & 0x04)
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val |= 0x02;
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if (ista & 0x08)
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val |= 0x04;
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if (val)
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hscx_int_main(cs, val);
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}
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if (ista & 0x20) {
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val = 0xfe & readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA | 0x80);
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if (val) {
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isac_interrupt(cs, val);
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}
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}
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if (ista & 0x10) {
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val = 0x01;
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isac_interrupt(cs, val);
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}
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ista = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
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if ((ista & 0x3f) && icnt) {
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icnt--;
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goto Start_IPAC;
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}
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if (!icnt)
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printk(KERN_WARNING "ASUS IRQ LOOP\n");
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xFF);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xC0);
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}
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void
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release_io_asuscom(struct IsdnCardState *cs)
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{
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int bytecnt = 8;
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if (cs->hw.asus.cfg_reg)
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release_region(cs->hw.asus.cfg_reg, bytecnt);
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}
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static void
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reset_asuscom(struct IsdnCardState *cs)
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{
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long flags;
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if (cs->subtyp == ASUS_IPAC)
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x20);
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else
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byteout(cs->hw.asus.adr, ASUS_RESET); /* Reset On */
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save_flags(flags);
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sti();
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout((10*HZ)/1000);
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if (cs->subtyp == ASUS_IPAC)
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x0);
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else
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byteout(cs->hw.asus.adr, 0); /* Reset Off */
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout((10*HZ)/1000);
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if (cs->subtyp == ASUS_IPAC) {
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_CONF, 0x0);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ACFG, 0xff);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_AOE, 0x0);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xc0);
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writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_PCFG, 0x12);
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}
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restore_flags(flags);
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}
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static int
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Asus_card_msg(struct IsdnCardState *cs, int mt, void *arg)
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{
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switch (mt) {
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case CARD_RESET:
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reset_asuscom(cs);
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return(0);
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case CARD_RELEASE:
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release_io_asuscom(cs);
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return(0);
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case CARD_INIT:
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cs->debug |= L1_DEB_IPAC;
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inithscxisac(cs, 3);
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return(0);
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case CARD_TEST:
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return(0);
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}
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return(0);
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}
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__initfunc(int
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setup_asuscom(struct IsdnCard *card))
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{
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int bytecnt;
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struct IsdnCardState *cs = card->cs;
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u_char val;
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char tmp[64];
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strcpy(tmp, Asuscom_revision);
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printk(KERN_INFO "HiSax: Asuscom ISDNLink driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_ASUSCOM)
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return (0);
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bytecnt = 8;
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cs->hw.asus.cfg_reg = card->para[1];
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cs->irq = card->para[0];
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if (check_region((cs->hw.asus.cfg_reg), bytecnt)) {
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printk(KERN_WARNING
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"HiSax: %s config port %x-%x already in use\n",
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CardType[card->typ],
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cs->hw.asus.cfg_reg,
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cs->hw.asus.cfg_reg + bytecnt);
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return (0);
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} else {
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request_region(cs->hw.asus.cfg_reg, bytecnt, "asuscom isdn");
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}
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printk(KERN_INFO "ISDNLink: defined at 0x%x IRQ %d\n",
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cs->hw.asus.cfg_reg, cs->irq);
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cs->BC_Read_Reg = &ReadHSCX;
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cs->BC_Write_Reg = &WriteHSCX;
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cs->BC_Send_Data = &hscx_fill_fifo;
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cs->cardmsg = &Asus_card_msg;
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val = readreg(cs->hw.asus.cfg_reg + ASUS_IPAC_ALE,
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cs->hw.asus.cfg_reg + ASUS_IPAC_DATA, IPAC_ID);
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if (val == 1) {
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cs->subtyp = ASUS_IPAC;
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cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_IPAC_ALE;
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cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
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cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
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test_and_set_bit(HW_IPAC, &cs->HW_Flags);
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cs->readisac = &ReadISAC_IPAC;
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cs->writeisac = &WriteISAC_IPAC;
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cs->readisacfifo = &ReadISACfifo_IPAC;
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cs->writeisacfifo = &WriteISACfifo_IPAC;
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cs->irq_func = &asuscom_interrupt_ipac;
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printk(KERN_INFO "Asus: IPAC version %x\n", val);
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} else {
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cs->subtyp = ASUS_ISACHSCX;
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cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_ADR;
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cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_ISAC;
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cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_HSCX;
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cs->hw.asus.u7 = cs->hw.asus.cfg_reg + ASUS_CTRL_U7;
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cs->hw.asus.pots = cs->hw.asus.cfg_reg + ASUS_CTRL_POTS;
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cs->readisac = &ReadISAC;
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cs->writeisac = &WriteISAC;
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cs->readisacfifo = &ReadISACfifo;
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cs->writeisacfifo = &WriteISACfifo;
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cs->irq_func = &asuscom_interrupt;
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ISACVersion(cs, "ISDNLink:");
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if (HscxVersion(cs, "ISDNLink:")) {
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printk(KERN_WARNING
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"ISDNLink: wrong HSCX versions check IO address\n");
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release_io_asuscom(cs);
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return (0);
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}
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}
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printk(KERN_INFO "ISDNLink: resetting card\n");
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reset_asuscom(cs);
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return (1);
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}
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