mirror of https://gitee.com/openkylin/linux.git
335 lines
7.7 KiB
C
335 lines
7.7 KiB
C
/* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $
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*
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* low level stuff for TeleInt isdn cards
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*
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* Author Karsten Keil
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* Copyright by Karsten Keil <keil@isdn4linux.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/init.h>
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#include "hisax.h"
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#include "isac.h"
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#include "hfc_2bs0.h"
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#include "isdnl1.h"
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static const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
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#define byteout(addr, val) outb(val, addr)
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#define bytein(addr) inb(addr)
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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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int max_delay = 2000;
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byteout(ale, off);
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ret = HFC_BUSY & bytein(ale);
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while (ret && --max_delay)
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ret = HFC_BUSY & bytein(ale);
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if (!max_delay) {
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printk(KERN_WARNING "TeleInt Busy not inactive\n");
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return (0);
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}
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ret = bytein(adr);
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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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register u_char ret;
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register int max_delay = 20000;
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register int i;
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byteout(ale, off);
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for (i = 0; i < size; i++) {
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ret = HFC_BUSY & bytein(ale);
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while (ret && --max_delay)
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ret = HFC_BUSY & bytein(ale);
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if (!max_delay) {
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printk(KERN_WARNING "TeleInt Busy not inactive\n");
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return;
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}
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data[i] = bytein(adr);
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}
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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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register u_char ret;
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int max_delay = 2000;
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byteout(ale, off);
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ret = HFC_BUSY & bytein(ale);
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while (ret && --max_delay)
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ret = HFC_BUSY & bytein(ale);
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if (!max_delay) {
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printk(KERN_WARNING "TeleInt Busy not inactive\n");
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return;
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}
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byteout(adr, data);
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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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register u_char ret;
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register int max_delay = 20000;
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register int i;
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byteout(ale, off);
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for (i = 0; i < size; i++) {
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ret = HFC_BUSY & bytein(ale);
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while (ret && --max_delay)
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ret = HFC_BUSY & bytein(ale);
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if (!max_delay) {
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printk(KERN_WARNING "TeleInt Busy not inactive\n");
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return;
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}
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byteout(adr, data[i]);
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}
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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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cs->hw.hfc.cip = offset;
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return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 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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cs->hw.hfc.cip = offset;
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writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 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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cs->hw.hfc.cip = 0;
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readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 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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cs->hw.hfc.cip = 0;
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writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
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}
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static u_char
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ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
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{
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register u_char ret;
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if (data) {
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cs->hw.hfc.cip = reg;
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byteout(cs->hw.hfc.addr | 1, reg);
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ret = bytein(cs->hw.hfc.addr);
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if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
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debugl1(cs, "hfc RD %02x %02x", reg, ret);
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} else
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ret = bytein(cs->hw.hfc.addr | 1);
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return (ret);
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}
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static void
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WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
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{
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byteout(cs->hw.hfc.addr | 1, reg);
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cs->hw.hfc.cip = reg;
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if (data)
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byteout(cs->hw.hfc.addr, value);
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if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
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debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
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}
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static irqreturn_t
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TeleInt_interrupt(int intno, void *dev_id)
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{
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struct IsdnCardState *cs = dev_id;
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u_char val;
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u_long flags;
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spin_lock_irqsave(&cs->lock, flags);
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val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 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.hfc.addr | 1, cs->hw.hfc.addr, 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.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
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writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
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spin_unlock_irqrestore(&cs->lock, flags);
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return IRQ_HANDLED;
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}
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static void
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TeleInt_Timer(struct timer_list *t)
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{
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struct IsdnCardState *cs = from_timer(cs, t, hw.hfc.timer);
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int stat = 0;
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u_long flags;
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spin_lock_irqsave(&cs->lock, flags);
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if (cs->bcs[0].mode) {
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stat |= 1;
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main_irq_hfc(&cs->bcs[0]);
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}
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if (cs->bcs[1].mode) {
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stat |= 2;
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main_irq_hfc(&cs->bcs[1]);
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}
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spin_unlock_irqrestore(&cs->lock, flags);
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stat = HZ / 100;
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if (!stat)
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stat = 1;
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cs->hw.hfc.timer.expires = jiffies + stat;
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add_timer(&cs->hw.hfc.timer);
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}
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static void
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release_io_TeleInt(struct IsdnCardState *cs)
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{
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del_timer(&cs->hw.hfc.timer);
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releasehfc(cs);
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if (cs->hw.hfc.addr)
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release_region(cs->hw.hfc.addr, 2);
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}
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static void
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reset_TeleInt(struct IsdnCardState *cs)
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{
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printk(KERN_INFO "TeleInt: resetting card\n");
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cs->hw.hfc.cirm |= HFC_RESET;
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byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
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mdelay(10);
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cs->hw.hfc.cirm &= ~HFC_RESET;
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byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
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mdelay(10);
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}
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static int
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TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
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{
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u_long flags;
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int delay;
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switch (mt) {
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case CARD_RESET:
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spin_lock_irqsave(&cs->lock, flags);
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reset_TeleInt(cs);
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spin_unlock_irqrestore(&cs->lock, flags);
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return (0);
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case CARD_RELEASE:
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release_io_TeleInt(cs);
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return (0);
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case CARD_INIT:
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spin_lock_irqsave(&cs->lock, flags);
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reset_TeleInt(cs);
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inithfc(cs);
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clear_pending_isac_ints(cs);
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initisac(cs);
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/* Reenable all IRQ */
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cs->writeisac(cs, ISAC_MASK, 0);
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cs->writeisac(cs, ISAC_CMDR, 0x41);
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spin_unlock_irqrestore(&cs->lock, flags);
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delay = HZ / 100;
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if (!delay)
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delay = 1;
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cs->hw.hfc.timer.expires = jiffies + delay;
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add_timer(&cs->hw.hfc.timer);
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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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int setup_TeleInt(struct IsdnCard *card)
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{
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struct IsdnCardState *cs = card->cs;
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char tmp[64];
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strcpy(tmp, TeleInt_revision);
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printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_TELEINT)
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return (0);
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cs->hw.hfc.addr = card->para[1] & 0x3fe;
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cs->irq = card->para[0];
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cs->hw.hfc.cirm = HFC_CIRM;
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cs->hw.hfc.isac_spcr = 0x00;
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cs->hw.hfc.cip = 0;
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cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
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cs->bcs[0].hw.hfc.send = NULL;
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cs->bcs[1].hw.hfc.send = NULL;
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cs->hw.hfc.fifosize = 7 * 1024 + 512;
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timer_setup(&cs->hw.hfc.timer, TeleInt_Timer, 0);
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if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
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printk(KERN_WARNING
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"HiSax: TeleInt config port %x-%x already in use\n",
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cs->hw.hfc.addr,
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cs->hw.hfc.addr + 2);
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return (0);
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}
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/* HW IO = IO */
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byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
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byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
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switch (cs->irq) {
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case 3:
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cs->hw.hfc.cirm |= HFC_INTA;
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break;
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case 4:
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cs->hw.hfc.cirm |= HFC_INTB;
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break;
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case 5:
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cs->hw.hfc.cirm |= HFC_INTC;
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break;
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case 7:
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cs->hw.hfc.cirm |= HFC_INTD;
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break;
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case 10:
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cs->hw.hfc.cirm |= HFC_INTE;
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break;
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case 11:
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cs->hw.hfc.cirm |= HFC_INTF;
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break;
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default:
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printk(KERN_WARNING "TeleInt: wrong IRQ\n");
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release_io_TeleInt(cs);
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return (0);
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}
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byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
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byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
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printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
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cs->hw.hfc.addr, cs->irq);
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setup_isac(cs);
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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->BC_Read_Reg = &ReadHFC;
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cs->BC_Write_Reg = &WriteHFC;
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cs->cardmsg = &TeleInt_card_msg;
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cs->irq_func = &TeleInt_interrupt;
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ISACVersion(cs, "TeleInt:");
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return (1);
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}
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