/* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $ * * low level stuff for TeleInt 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 "hfc_2bs0.h" #include "isdnl1.h" extern const char *CardType[]; static const char *TeleInt_revision = "$Revision: 1.16.2.5 $"; #define byteout(addr,val) outb(val,addr) #define bytein(addr) inb(addr) static inline u_char readreg(unsigned int ale, unsigned int adr, u_char off) { register u_char ret; int max_delay = 2000; byteout(ale, off); ret = HFC_BUSY & bytein(ale); while (ret && --max_delay) ret = HFC_BUSY & bytein(ale); if (!max_delay) { printk(KERN_WARNING "TeleInt Busy not inactive\n"); return (0); } ret = bytein(adr); return (ret); } static inline void readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { register u_char ret; register int max_delay = 20000; register int i; byteout(ale, off); for (i = 0; i<size; i++) { ret = HFC_BUSY & bytein(ale); while (ret && --max_delay) ret = HFC_BUSY & bytein(ale); if (!max_delay) { printk(KERN_WARNING "TeleInt Busy not inactive\n"); return; } data[i] = bytein(adr); } } static inline void writereg(unsigned int ale, unsigned int adr, u_char off, u_char data) { register u_char ret; int max_delay = 2000; byteout(ale, off); ret = HFC_BUSY & bytein(ale); while (ret && --max_delay) ret = HFC_BUSY & bytein(ale); if (!max_delay) { printk(KERN_WARNING "TeleInt Busy not inactive\n"); return; } byteout(adr, data); } static inline void writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { register u_char ret; register int max_delay = 20000; register int i; byteout(ale, off); for (i = 0; i<size; i++) { ret = HFC_BUSY & bytein(ale); while (ret && --max_delay) ret = HFC_BUSY & bytein(ale); if (!max_delay) { printk(KERN_WARNING "TeleInt Busy not inactive\n"); return; } byteout(adr, data[i]); } } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { cs->hw.hfc.cip = offset; return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { cs->hw.hfc.cip = offset; writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) { cs->hw.hfc.cip = 0; readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) { cs->hw.hfc.cip = 0; writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size); } static u_char ReadHFC(struct IsdnCardState *cs, int data, u_char reg) { register u_char ret; if (data) { cs->hw.hfc.cip = reg; byteout(cs->hw.hfc.addr | 1, reg); ret = bytein(cs->hw.hfc.addr); if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2)) debugl1(cs, "hfc RD %02x %02x", reg, ret); } else ret = bytein(cs->hw.hfc.addr | 1); return (ret); } static void WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value) { byteout(cs->hw.hfc.addr | 1, reg); cs->hw.hfc.cip = reg; if (data) byteout(cs->hw.hfc.addr, value); if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2)) debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value); } static irqreturn_t TeleInt_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.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA); if (val) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF); writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void TeleInt_Timer(struct IsdnCardState *cs) { int stat = 0; u_long flags; spin_lock_irqsave(&cs->lock, flags); if (cs->bcs[0].mode) { stat |= 1; main_irq_hfc(&cs->bcs[0]); } if (cs->bcs[1].mode) { stat |= 2; main_irq_hfc(&cs->bcs[1]); } spin_unlock_irqrestore(&cs->lock, flags); stat = HZ/100; if (!stat) stat = 1; cs->hw.hfc.timer.expires = jiffies + stat; add_timer(&cs->hw.hfc.timer); } static void release_io_TeleInt(struct IsdnCardState *cs) { del_timer(&cs->hw.hfc.timer); releasehfc(cs); if (cs->hw.hfc.addr) release_region(cs->hw.hfc.addr, 2); } static void reset_TeleInt(struct IsdnCardState *cs) { printk(KERN_INFO "TeleInt: resetting card\n"); cs->hw.hfc.cirm |= HFC_RESET; byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */ mdelay(10); cs->hw.hfc.cirm &= ~HFC_RESET; byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */ mdelay(10); } static int TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; int delay; switch (mt) { case CARD_RESET: spin_lock_irqsave(&cs->lock, flags); reset_TeleInt(cs); spin_unlock_irqrestore(&cs->lock, flags); return(0); case CARD_RELEASE: release_io_TeleInt(cs); return(0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); reset_TeleInt(cs); inithfc(cs); clear_pending_isac_ints(cs); initisac(cs); /* Reenable all IRQ */ cs->writeisac(cs, ISAC_MASK, 0); cs->writeisac(cs, ISAC_CMDR, 0x41); spin_unlock_irqrestore(&cs->lock, flags); delay = HZ/100; if (!delay) delay = 1; cs->hw.hfc.timer.expires = jiffies + delay; add_timer(&cs->hw.hfc.timer); return(0); case CARD_TEST: return(0); } return(0); } int __devinit setup_TeleInt(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, TeleInt_revision); printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_TELEINT) return (0); cs->hw.hfc.addr = card->para[1] & 0x3fe; cs->irq = card->para[0]; cs->hw.hfc.cirm = HFC_CIRM; cs->hw.hfc.isac_spcr = 0x00; cs->hw.hfc.cip = 0; cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER; cs->bcs[0].hw.hfc.send = NULL; cs->bcs[1].hw.hfc.send = NULL; cs->hw.hfc.fifosize = 7 * 1024 + 512; cs->hw.hfc.timer.function = (void *) TeleInt_Timer; cs->hw.hfc.timer.data = (long) cs; init_timer(&cs->hw.hfc.timer); if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) { printk(KERN_WARNING "HiSax: %s config port %x-%x already in use\n", CardType[card->typ], cs->hw.hfc.addr, cs->hw.hfc.addr + 2); return (0); } /* HW IO = IO */ byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff); byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54); switch (cs->irq) { case 3: cs->hw.hfc.cirm |= HFC_INTA; break; case 4: cs->hw.hfc.cirm |= HFC_INTB; break; case 5: cs->hw.hfc.cirm |= HFC_INTC; break; case 7: cs->hw.hfc.cirm |= HFC_INTD; break; case 10: cs->hw.hfc.cirm |= HFC_INTE; break; case 11: cs->hw.hfc.cirm |= HFC_INTF; break; default: printk(KERN_WARNING "TeleInt: wrong IRQ\n"); release_io_TeleInt(cs); return (0); } byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt); printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n", cs->hw.hfc.addr, cs->irq); setup_isac(cs); cs->readisac = &ReadISAC; cs->writeisac = &WriteISAC; cs->readisacfifo = &ReadISACfifo; cs->writeisacfifo = &WriteISACfifo; cs->BC_Read_Reg = &ReadHFC; cs->BC_Write_Reg = &WriteHFC; cs->cardmsg = &TeleInt_card_msg; cs->irq_func = &TeleInt_interrupt; ISACVersion(cs, "TeleInt:"); return (1); }