teleint.c
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上传日期:2013-02-24
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- /* $Id: teleint.c,v 1.1.4.1 2001/11/20 14:19:36 kai 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.
- *
- */
- #define __NO_VERSION__
- #include <linux/init.h>
- #include "hisax.h"
- #include "isac.h"
- #include "hfc_2bs0.h"
- #include "isdnl1.h"
- extern const char *CardType[];
- const char *TeleInt_revision = "$Revision: 1.1.4.1 $";
- #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;
- long flags;
- save_flags(flags);
- cli();
- 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 inactiven");
- restore_flags(flags);
- return (0);
- }
- 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)
- {
- 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 inactiven");
- 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;
- long flags;
- save_flags(flags);
- cli();
- 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 inactiven");
- restore_flags(flags);
- return;
- }
- byteout(adr, data);
- restore_flags(flags);
- }
- 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;
-
- /* fifo write without cli because it's allready done */
- 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 inactiven");
- 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 void
- TeleInt_interrupt(int intno, void *dev_id, struct pt_regs *regs)
- {
- struct IsdnCardState *cs = dev_id;
- u_char val;
- if (!cs) {
- printk(KERN_WARNING "TeleInt: Spurious interrupt!n");
- return;
- }
- 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);
- }
- static void
- TeleInt_Timer(struct IsdnCardState *cs)
- {
- int stat = 0;
- 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]);
- }
- cs->hw.hfc.timer.expires = jiffies + 1;
- add_timer(&cs->hw.hfc.timer);
- }
- 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)
- {
- long flags;
- printk(KERN_INFO "TeleInt: resetting cardn");
- cs->hw.hfc.cirm |= HFC_RESET;
- byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
- save_flags(flags);
- sti();
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((30*HZ)/1000);
- cs->hw.hfc.cirm &= ~HFC_RESET;
- byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((10*HZ)/1000);
- restore_flags(flags);
- }
- static int
- TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
- {
- switch (mt) {
- case CARD_RESET:
- reset_TeleInt(cs);
- return(0);
- case CARD_RELEASE:
- release_io_TeleInt(cs);
- return(0);
- case CARD_INIT:
- inithfc(cs);
- clear_pending_isac_ints(cs);
- initisac(cs);
- /* Reenable all IRQ */
- cs->writeisac(cs, ISAC_MASK, 0);
- cs->writeisac(cs, ISAC_CMDR, 0x41);
- cs->hw.hfc.timer.expires = jiffies + 1;
- add_timer(&cs->hw.hfc.timer);
- return(0);
- case CARD_TEST:
- return(0);
- }
- return(0);
- }
- int __init
- setup_TeleInt(struct IsdnCard *card)
- {
- struct IsdnCardState *cs = card->cs;
- char tmp[64];
- strcpy(tmp, TeleInt_revision);
- printk(KERN_INFO "HiSax: TeleInt driver Rev. %sn", 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 (check_region((cs->hw.hfc.addr), 2)) {
- printk(KERN_WARNING
- "HiSax: %s config port %x-%x already in usen",
- CardType[card->typ],
- cs->hw.hfc.addr,
- cs->hw.hfc.addr + 2);
- return (0);
- } else {
- request_region(cs->hw.hfc.addr, 2, "TeleInt isdn");
- }
- /* 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 IRQn");
- 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 %dn",
- cs->hw.hfc.addr,
- cs->irq);
- reset_TeleInt(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);
- }