/* $Id: ix1_micro.c,v 2.8 1999/07/12 21:05:19 keil Exp $ * ix1_micro.c low level stuff for ITK ix1-micro Rev.2 isdn cards * derived from the original file teles3.c from Karsten Keil * * Copyright (C) 1997 Klaus-Peter Nischke (ITK AG) (for the modifications to * the original file teles.c) * * Thanks to Jan den Ouden * Fritz Elfert * Beat Doebeli * * $Log: ix1_micro.c,v $ * Revision 2.8 1999/07/12 21:05:19 keil * fix race in IRQ handling * added watchdog for lost IRQs * * Revision 2.7 1998/04/15 16:44:31 keil * new init code * * Revision 2.6 1998/02/11 17:28:09 keil * Niccy PnP/PCI support * * Revision 2.5 1998/02/02 13:29:42 keil * fast io * * Revision 2.4 1997/11/08 21:35:50 keil * new l1 init * * Revision 2.3 1997/11/06 17:09:35 keil * New 2.1 init code * * Revision 2.2 1997/10/29 18:55:51 keil * changes for 2.1.60 (irq2dev_map) * * Revision 2.1 1997/07/27 21:47:09 keil * new interface structures * * Revision 2.0 1997/06/26 11:02:50 keil * New Layer and card interface * * Revision 1.3 1997/04/13 19:54:02 keil * Change in IRQ check delay for SMP * * Revision 1.2 1997/04/06 22:54:21 keil * Using SKB's * * Revision 1.1 1997/01/27 15:43:10 keil * first version * * */ /* For the modification done by the author the following terms and conditions apply (GNU PUBLIC LICENSE) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. You may contact Klaus-Peter Nischke by email: klaus@nischke.do.eunet.de or by conventional mail: Klaus-Peter Nischke Deusener Str. 287 44369 Dortmund Germany */ #define __NO_VERSION__ #include "hisax.h" #include "isac.h" #include "hscx.h" #include "isdnl1.h" extern const char *CardType[]; const char *ix1_revision = "$Revision: 2.8 $"; #define byteout(addr,val) outb(val,addr) #define bytein(addr) inb(addr) #define SPECIAL_PORT_OFFSET 3 #define ISAC_COMMAND_OFFSET 2 #define ISAC_DATA_OFFSET 0 #define HSCX_COMMAND_OFFSET 2 #define HSCX_DATA_OFFSET 1 #define TIMEOUT 50 static inline u_char readreg(unsigned int ale, unsigned int adr, u_char off) { register u_char ret; long flags; save_flags(flags); cli(); byteout(ale, off); ret = bytein(adr); restore_flags(flags); return (ret); } static inline void readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { /* fifo read without cli because it's allready done */ byteout(ale, off); insb(adr, data, size); } static inline void writereg(unsigned int ale, unsigned int adr, u_char off, u_char data) { long flags; save_flags(flags); cli(); byteout(ale, off); byteout(adr, data); restore_flags(flags); } static inline void writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { /* fifo write without cli because it's allready done */ byteout(ale, off); outsb(adr, data, size); } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { return (readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset, value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) { readfifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) { writefifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size); } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { return (readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0))); } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0), value); } #define READHSCX(cs, nr, reg) readreg(cs->hw.ix1.hscx_ale, \ cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0)) #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ix1.hscx_ale, \ cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0), data) #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ix1.hscx_ale, \ cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ix1.hscx_ale, \ cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt) #include "hscx_irq.c" static void ix1micro_interrupt(int intno, void *dev_id, struct pt_regs *regs) { struct IsdnCardState *cs = dev_id; u_char val; if (!cs) { printk(KERN_WARNING "IX1: Spurious interrupt!\n"); return; } val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40); Start_HSCX: if (val) hscx_int_main(cs, val); val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.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.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA); if (val) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0xFF); writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0xFF); writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0xFF); writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0); writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0); writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0); } void release_io_ix1micro(struct IsdnCardState *cs) { if (cs->hw.ix1.cfg_reg) release_region(cs->hw.ix1.cfg_reg, 4); } static void ix1_reset(struct IsdnCardState *cs) { long flags; int cnt; /* reset isac */ save_flags(flags); cnt = 3 * (HZ / 10) + 1; sti(); while (cnt--) { byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 1); HZDELAY(1); /* wait >=10 ms */ } byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 0); restore_flags(flags); } static int ix1_card_msg(struct IsdnCardState *cs, int mt, void *arg) { switch (mt) { case CARD_RESET: ix1_reset(cs); return(0); case CARD_RELEASE: release_io_ix1micro(cs); return(0); case CARD_INIT: inithscxisac(cs, 3); return(0); case CARD_TEST: return(0); } return(0); } __initfunc(int setup_ix1micro(struct IsdnCard *card)) { struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, ix1_revision); printk(KERN_INFO "HiSax: ITK IX1 driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_IX1MICROR2) return (0); /* IO-Ports */ cs->hw.ix1.isac_ale = card->para[1] + ISAC_COMMAND_OFFSET; cs->hw.ix1.hscx_ale = card->para[1] + HSCX_COMMAND_OFFSET; cs->hw.ix1.isac = card->para[1] + ISAC_DATA_OFFSET; cs->hw.ix1.hscx = card->para[1] + HSCX_DATA_OFFSET; cs->hw.ix1.cfg_reg = card->para[1]; cs->irq = card->para[0]; if (cs->hw.ix1.cfg_reg) { if (check_region((cs->hw.ix1.cfg_reg), 4)) { printk(KERN_WARNING "HiSax: %s config port %x-%x already in use\n", CardType[card->typ], cs->hw.ix1.cfg_reg, cs->hw.ix1.cfg_reg + 4); return (0); } else request_region(cs->hw.ix1.cfg_reg, 4, "ix1micro cfg"); } printk(KERN_INFO "HiSax: %s config irq:%d io:0x%X\n", CardType[cs->typ], cs->irq, cs->hw.ix1.cfg_reg); ix1_reset(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 = &ix1_card_msg; cs->irq_func = &ix1micro_interrupt; ISACVersion(cs, "ix1-Micro:"); if (HscxVersion(cs, "ix1-Micro:")) { printk(KERN_WARNING "ix1-Micro: wrong HSCX versions check IO address\n"); release_io_ix1micro(cs); return (0); } return (1); }