/* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $ * * low level stuff for mic cards * * Author Stephan von Krawczynski * Copyright by Stephan von Krawczynski <skraw@ithnet.com> * * 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" extern const char *CardType[]; static const char *mic_revision = "$Revision: 1.12.2.4 $"; #define byteout(addr,val) outb(val,addr) #define bytein(addr) inb(addr) #define MIC_ISAC 2 #define MIC_HSCX 1 #define MIC_ADR 7 /* CARD_ADR (Write) */ #define MIC_RESET 0x3 /* same as DOS driver */ 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.mic.adr, cs->hw.mic.isac, offset)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) { readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) { writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size); } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { return (readreg(cs->hw.mic.adr, cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0))); } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { writereg(cs->hw.mic.adr, cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value); } /* * fast interrupt HSCX stuff goes here */ #define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \ cs->hw.mic.hscx, reg + (nr ? 0x40 : 0)) #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \ cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data) #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \ cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \ cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt) #include "hscx_irq.c" static irqreturn_t mic_interrupt(int intno, void *dev_id, struct pt_regs *regs) { struct IsdnCardState *cs = dev_id; u_char val; u_long flags; spin_lock_irqsave(&cs->lock, flags); val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40); Start_HSCX: if (val) hscx_int_main(cs, val); val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); val = readreg(cs->hw.mic.adr, cs->hw.mic.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.mic.adr, cs->hw.mic.isac, ISAC_ISTA); if (val) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF); writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF); writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF); writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0); writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0); writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_mic(struct IsdnCardState *cs) { int bytecnt = 8; if (cs->hw.mic.cfg_reg) release_region(cs->hw.mic.cfg_reg, bytecnt); } static int mic_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: return(0); case CARD_RELEASE: release_io_mic(cs); return(0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); inithscx(cs); /* /RTSA := ISAC RST */ inithscxisac(cs, 3); spin_unlock_irqrestore(&cs->lock, flags); return(0); case CARD_TEST: return(0); } return(0); } int __init setup_mic(struct IsdnCard *card) { int bytecnt; struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, mic_revision); printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_MIC) return (0); bytecnt = 8; cs->hw.mic.cfg_reg = card->para[1]; cs->irq = card->para[0]; cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR; cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC; cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX; if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) { printk(KERN_WARNING "HiSax: %s config port %x-%x already in use\n", CardType[card->typ], cs->hw.mic.cfg_reg, cs->hw.mic.cfg_reg + bytecnt); return (0); } printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n", cs->hw.mic.cfg_reg, cs->irq); setup_isac(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 = &mic_card_msg; cs->irq_func = &mic_interrupt; ISACVersion(cs, "mic:"); if (HscxVersion(cs, "mic:")) { printk(KERN_WARNING "mic: wrong HSCX versions check IO address\n"); release_io_mic(cs); return (0); } return (1); }