298 lines
7.3 KiB
C
298 lines
7.3 KiB
C
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/* $Id: saphir.c,v 1.10.2.4 2004/01/13 23:48:39 keil Exp $
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*
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* low level stuff for HST Saphir 1
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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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* Thanks to HST High Soft Tech GmbH
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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 "hscx.h"
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#include "isdnl1.h"
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static char *saphir_rev = "$Revision: 1.10.2.4 $";
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#define byteout(addr, val) outb(val, addr)
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#define bytein(addr) inb(addr)
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#define ISAC_DATA 0
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#define HSCX_DATA 1
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#define ADDRESS_REG 2
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#define IRQ_REG 3
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#define SPARE_REG 4
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#define RESET_REG 5
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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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byteout(ale, off);
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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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byteout(ale, off);
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insb(adr, data, size);
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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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byteout(ale, off);
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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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byteout(ale, off);
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outsb(adr, data, size);
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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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return (readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, 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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writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, 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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readfifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 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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writefifo(cs->hw.saphir.ale, cs->hw.saphir.isac, 0, data, size);
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}
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static u_char
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ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
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{
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return (readreg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
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offset + (hscx ? 0x40 : 0)));
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}
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static void
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WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
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{
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writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx,
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offset + (hscx ? 0x40 : 0), value);
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}
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#define READHSCX(cs, nr, reg) readreg(cs->hw.saphir.ale, \
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cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0))
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#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.saphir.ale, \
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cs->hw.saphir.hscx, reg + (nr ? 0x40 : 0), data)
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#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.saphir.ale, \
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cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.saphir.ale, \
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cs->hw.saphir.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#include "hscx_irq.c"
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static irqreturn_t
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saphir_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.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
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Start_HSCX:
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if (val)
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hscx_int_main(cs, val);
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val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, 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.saphir.ale, cs->hw.saphir.hscx, HSCX_ISTA + 0x40);
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if (val) {
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if (cs->debug & L1_DEB_HSCX)
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debugl1(cs, "HSCX IntStat after IntRoutine");
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goto Start_HSCX;
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}
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val = readreg(cs->hw.saphir.ale, cs->hw.saphir.isac, 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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/* Watchdog */
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if (cs->hw.saphir.timer.function)
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mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
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else
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printk(KERN_WARNING "saphir: Spurious timer!\n");
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writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0xFF);
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writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0xFF);
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writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0xFF);
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writereg(cs->hw.saphir.ale, cs->hw.saphir.isac, ISAC_MASK, 0);
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writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK, 0);
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writereg(cs->hw.saphir.ale, cs->hw.saphir.hscx, HSCX_MASK + 0x40, 0);
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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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SaphirWatchDog(struct IsdnCardState *cs)
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{
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u_long flags;
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spin_lock_irqsave(&cs->lock, flags);
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/* 5 sec WatchDog, so read at least every 4 sec */
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cs->readisac(cs, ISAC_RBCH);
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spin_unlock_irqrestore(&cs->lock, flags);
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mod_timer(&cs->hw.saphir.timer, jiffies + 1 * HZ);
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}
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static void
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release_io_saphir(struct IsdnCardState *cs)
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{
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byteout(cs->hw.saphir.cfg_reg + IRQ_REG, 0xff);
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del_timer(&cs->hw.saphir.timer);
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cs->hw.saphir.timer.function = NULL;
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if (cs->hw.saphir.cfg_reg)
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release_region(cs->hw.saphir.cfg_reg, 6);
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}
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static int
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saphir_reset(struct IsdnCardState *cs)
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{
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u_char irq_val;
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switch (cs->irq) {
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case 5: irq_val = 0;
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break;
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case 3: irq_val = 1;
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break;
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case 11:
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irq_val = 2;
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break;
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case 12:
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irq_val = 3;
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break;
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case 15:
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irq_val = 4;
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break;
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default:
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printk(KERN_WARNING "HiSax: saphir wrong IRQ %d\n",
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cs->irq);
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return (1);
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}
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byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
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byteout(cs->hw.saphir.cfg_reg + RESET_REG, 1);
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mdelay(10);
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byteout(cs->hw.saphir.cfg_reg + RESET_REG, 0);
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mdelay(10);
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byteout(cs->hw.saphir.cfg_reg + IRQ_REG, irq_val);
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byteout(cs->hw.saphir.cfg_reg + SPARE_REG, 0x02);
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return (0);
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}
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static int
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saphir_card_msg(struct IsdnCardState *cs, int mt, void *arg)
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{
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u_long flags;
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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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saphir_reset(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_saphir(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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inithscxisac(cs, 3);
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spin_unlock_irqrestore(&cs->lock, flags);
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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_saphir(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, saphir_rev);
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printk(KERN_INFO "HiSax: HST Saphir driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_HSTSAPHIR)
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return (0);
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/* IO-Ports */
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cs->hw.saphir.cfg_reg = card->para[1];
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cs->hw.saphir.isac = card->para[1] + ISAC_DATA;
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cs->hw.saphir.hscx = card->para[1] + HSCX_DATA;
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cs->hw.saphir.ale = card->para[1] + ADDRESS_REG;
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cs->irq = card->para[0];
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if (!request_region(cs->hw.saphir.cfg_reg, 6, "saphir")) {
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printk(KERN_WARNING
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"HiSax: HST Saphir config port %x-%x already in use\n",
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cs->hw.saphir.cfg_reg,
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cs->hw.saphir.cfg_reg + 5);
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return (0);
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}
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printk(KERN_INFO "HiSax: HST Saphir config irq:%d io:0x%X\n",
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cs->irq, cs->hw.saphir.cfg_reg);
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setup_isac(cs);
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cs->hw.saphir.timer.function = (void *) SaphirWatchDog;
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cs->hw.saphir.timer.data = (long) cs;
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init_timer(&cs->hw.saphir.timer);
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cs->hw.saphir.timer.expires = jiffies + 4 * HZ;
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add_timer(&cs->hw.saphir.timer);
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if (saphir_reset(cs)) {
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release_io_saphir(cs);
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return (0);
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}
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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 = &ReadHSCX;
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cs->BC_Write_Reg = &WriteHSCX;
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cs->BC_Send_Data = &hscx_fill_fifo;
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cs->cardmsg = &saphir_card_msg;
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cs->irq_func = &saphir_interrupt;
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ISACVersion(cs, "saphir:");
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if (HscxVersion(cs, "saphir:")) {
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printk(KERN_WARNING
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"saphir: wrong HSCX versions check IO address\n");
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release_io_saphir(cs);
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return (0);
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}
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return (1);
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}
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