261 lines
7 KiB
C
261 lines
7 KiB
C
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/* $Id: s0box.c,v 2.6.2.4 2004/01/13 23:48:39 keil Exp $
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*
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* low level stuff for Creatix S0BOX
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*
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* Author Enrik Berkhan
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* Copyright by Enrik Berkhan <enrik@starfleet.inka.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 "hscx.h"
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#include "isdnl1.h"
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static const char *s0box_revision = "$Revision: 2.6.2.4 $";
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static inline void
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writereg(unsigned int padr, signed int addr, u_char off, u_char val) {
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outb_p(0x1c, padr + 2);
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outb_p(0x14, padr + 2);
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outb_p((addr + off) & 0x7f, padr);
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outb_p(0x16, padr + 2);
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outb_p(val, padr);
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outb_p(0x17, padr + 2);
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outb_p(0x14, padr + 2);
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outb_p(0x1c, padr + 2);
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}
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static u_char nibtab[] = { 1, 9, 5, 0xd, 3, 0xb, 7, 0xf,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 8, 4, 0xc, 2, 0xa, 6, 0xe };
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static inline u_char
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readreg(unsigned int padr, signed int addr, u_char off) {
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register u_char n1, n2;
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outb_p(0x1c, padr + 2);
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outb_p(0x14, padr + 2);
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outb_p((addr + off) | 0x80, padr);
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outb_p(0x16, padr + 2);
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outb_p(0x17, padr + 2);
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n1 = (inb_p(padr + 1) >> 3) & 0x17;
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outb_p(0x16, padr + 2);
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n2 = (inb_p(padr + 1) >> 3) & 0x17;
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outb_p(0x14, padr + 2);
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outb_p(0x1c, padr + 2);
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return nibtab[n1] | (nibtab[n2] << 4);
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}
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static inline void
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read_fifo(unsigned int padr, signed int adr, u_char *data, int size)
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{
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int i;
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register u_char n1, n2;
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outb_p(0x1c, padr + 2);
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outb_p(0x14, padr + 2);
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outb_p(adr | 0x80, padr);
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outb_p(0x16, padr + 2);
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for (i = 0; i < size; i++) {
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outb_p(0x17, padr + 2);
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n1 = (inb_p(padr + 1) >> 3) & 0x17;
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outb_p(0x16, padr + 2);
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n2 = (inb_p(padr + 1) >> 3) & 0x17;
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*(data++) = nibtab[n1] | (nibtab[n2] << 4);
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}
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outb_p(0x14, padr + 2);
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outb_p(0x1c, padr + 2);
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return;
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}
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static inline void
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write_fifo(unsigned int padr, signed int adr, u_char *data, int size)
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{
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int i;
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outb_p(0x1c, padr + 2);
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outb_p(0x14, padr + 2);
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outb_p(adr & 0x7f, padr);
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for (i = 0; i < size; i++) {
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outb_p(0x16, padr + 2);
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outb_p(*(data++), padr);
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outb_p(0x17, padr + 2);
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}
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outb_p(0x14, padr + 2);
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outb_p(0x1c, padr + 2);
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return;
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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.teles3.cfg_reg, cs->hw.teles3.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.teles3.cfg_reg, cs->hw.teles3.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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read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, 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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write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, 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.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset));
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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.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset, value);
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}
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/*
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* fast interrupt HSCX stuff goes here
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*/
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#define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg)
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#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg, data)
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#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
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#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
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#include "hscx_irq.c"
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static irqreturn_t
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s0box_interrupt(int intno, void *dev_id)
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{
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#define MAXCOUNT 5
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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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int count = 0;
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spin_lock_irqsave(&cs->lock, flags);
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val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
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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.teles3.cfg_reg, cs->hw.teles3.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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count++;
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val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
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if (val && count < MAXCOUNT) {
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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.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
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if (val && count < MAXCOUNT) {
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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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if (count >= MAXCOUNT)
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printk(KERN_WARNING "S0Box: more than %d loops in s0box_interrupt\n", count);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0xFF);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
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writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_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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release_io_s0box(struct IsdnCardState *cs)
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{
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release_region(cs->hw.teles3.cfg_reg, 8);
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}
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static int
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S0Box_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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break;
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case CARD_RELEASE:
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release_io_s0box(cs);
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break;
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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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break;
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case CARD_TEST:
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break;
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}
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return (0);
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}
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int setup_s0box(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, s0box_revision);
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printk(KERN_INFO "HiSax: S0Box IO driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_S0BOX)
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return (0);
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cs->hw.teles3.cfg_reg = card->para[1];
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cs->hw.teles3.hscx[0] = -0x20;
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cs->hw.teles3.hscx[1] = 0x0;
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cs->hw.teles3.isac = 0x20;
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cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e;
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cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e;
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cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e;
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cs->irq = card->para[0];
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if (!request_region(cs->hw.teles3.cfg_reg, 8, "S0Box parallel I/O")) {
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printk(KERN_WARNING "HiSax: S0Box ports %x-%x already in use\n",
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cs->hw.teles3.cfg_reg,
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cs->hw.teles3.cfg_reg + 7);
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return 0;
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}
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printk(KERN_INFO "HiSax: S0Box config irq:%d isac:0x%x cfg:0x%x\n",
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cs->irq,
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cs->hw.teles3.isac, cs->hw.teles3.cfg_reg);
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printk(KERN_INFO "HiSax: hscx A:0x%x hscx B:0x%x\n",
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cs->hw.teles3.hscx[0], cs->hw.teles3.hscx[1]);
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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 = &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 = &S0Box_card_msg;
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cs->irq_func = &s0box_interrupt;
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ISACVersion(cs, "S0Box:");
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if (HscxVersion(cs, "S0Box:")) {
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printk(KERN_WARNING
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"S0Box: wrong HSCX versions check IO address\n");
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release_io_s0box(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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