patch-2.3.4 linux/drivers/isdn/hisax/s0box.c

• Lines: 278
• Date: Sun May 23 10:03:41 1999
• Orig file: v2.3.3/linux/drivers/isdn/hisax/s0box.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.3/linux/drivers/isdn/hisax/s0box.c linux/drivers/isdn/hisax/s0box.c
@@ -0,0 +1,277 @@
+/* $Id: s0box.c,v 2.1 1998/04/15 16:38:24 keil Exp $
+
+ * s0box.c      low level stuff for Creatix S0BOX
+ *
+ * Author       S0BOX specific stuff: Enrik Berkhan (enrik@starfleet.inka.de)
+ *
+ *
+ */
+#define __NO_VERSION__
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+extern const char *CardType[];
+const char *s0box_revision = "$Revision: 2.1 $";
+
+static inline void
+writereg(unsigned int padr, signed int addr, u_char off, u_char val) {
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+	outb_p(0x1c,padr+2);
+	outb_p(0x14,padr+2);
+	outb_p((addr+off)&0x7f,padr);
+	outb_p(0x16,padr+2);
+	outb_p(val,padr);
+	outb_p(0x17,padr+2);
+	outb_p(0x14,padr+2);
+	outb_p(0x1c,padr+2);
+	restore_flags(flags);
+}
+
+static u_char nibtab[] = { 1, 9, 5, 0xd, 3, 0xb, 7, 0xf,
+			 0, 0, 0, 0, 0, 0, 0, 0,
+			 0, 8, 4, 0xc, 2, 0xa, 6, 0xe } ;
+
+static inline u_char
+readreg(unsigned int padr, signed int addr, u_char off) {
+	register u_char n1, n2;
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+	outb_p(0x1c,padr+2);
+	outb_p(0x14,padr+2);
+	outb_p((addr+off)|0x80,padr);
+	outb_p(0x16,padr+2);
+	outb_p(0x17,padr+2);
+	n1 = (inb_p(padr+1) >> 3) & 0x17;
+	outb_p(0x16,padr+2);
+	n2 = (inb_p(padr+1) >> 3) & 0x17;
+	outb_p(0x14,padr+2);
+	outb_p(0x1c,padr+2);
+	restore_flags(flags);
+	return nibtab[n1] | (nibtab[n2] << 4);
+}
+
+static inline void
+read_fifo(unsigned int padr, signed int adr, u_char * data, int size)
+{
+	int i;
+	register u_char n1, n2;
+	
+	outb_p(0x1c, padr+2);
+	outb_p(0x14, padr+2);
+	outb_p(adr|0x80, padr);
+	outb_p(0x16, padr+2);
+	for (i=0; i<size; i++) {
+		outb_p(0x17, padr+2);
+		n1 = (inb_p(padr+1) >> 3) & 0x17;
+		outb_p(0x16,padr+2);
+		n2 = (inb_p(padr+1) >> 3) & 0x17;
+		*(data++)=nibtab[n1] | (nibtab[n2] << 4);
+	}
+	outb_p(0x14,padr+2);
+	outb_p(0x1c,padr+2);
+	return;
+}
+
+static inline void
+write_fifo(unsigned int padr, signed int adr, u_char * data, int size)
+{
+	int i;
+	outb_p(0x1c, padr+2);
+	outb_p(0x14, padr+2);
+	outb_p(adr&0x7f, padr);
+	for (i=0; i<size; i++) {
+		outb_p(0x16, padr+2);
+		outb_p(*(data++), padr);
+		outb_p(0x17, padr+2);
+	}
+	outb_p(0x14,padr+2);
+	outb_p(0x1c,padr+2);
+	return;
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset, value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg)
+#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg, data)
+#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt)
+
+#include "hscx_irq.c"
+
+static void
+s0box_interrupt(int intno, void *dev_id, struct pt_regs *regs)
+{
+#define MAXCOUNT 20
+	struct IsdnCardState *cs = dev_id;
+	u_char val, stat = 0;
+	int count = 0;
+
+	if (!cs) {
+		printk(KERN_WARNING "Teles: Spurious interrupt!\n");
+		return;
+	}
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
+      Start_HSCX:
+	if (val) {
+		hscx_int_main(cs, val);
+		stat |= 1;
+	}
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
+      Start_ISAC:
+	if (val) {
+		isac_interrupt(cs, val);
+		stat |= 2;
+	}
+	count++;
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
+	if (val && count < MAXCOUNT) {
+		if (cs->debug & L1_DEB_HSCX)
+			debugl1(cs, "HSCX IntStat after IntRoutine");
+		goto Start_HSCX;
+	}
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
+	if (val && count < MAXCOUNT) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	if (count >= MAXCOUNT)
+		printk(KERN_WARNING "S0Box: more than %d loops in s0box_interrupt\n", count);
+	if (stat & 1) {
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF);
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF);
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0x0);
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0x0);
+	}
+	if (stat & 2) {
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0xFF);
+		writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0);
+	}
+}
+
+void
+release_io_s0box(struct IsdnCardState *cs)
+{
+	release_region(cs->hw.teles3.cfg_reg, 8);
+}
+
+static int
+S0Box_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	switch (mt) {
+		case CARD_RESET:
+			break;
+		case CARD_RELEASE:
+			release_io_s0box(cs);
+			break;
+		case CARD_SETIRQ:
+			return(request_irq(cs->irq, &s0box_interrupt,
+					I4L_IRQ_FLAG, "HiSax", cs));
+		case CARD_INIT:
+			inithscxisac(cs, 3);
+			break;
+		case CARD_TEST:
+			break;
+	}
+	return(0);
+}
+
+__initfunc(int
+setup_s0box(struct IsdnCard *card))
+{
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, s0box_revision);
+	printk(KERN_INFO "HiSax: S0Box IO driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_S0BOX)
+		return (0);
+
+	cs->hw.teles3.cfg_reg = card->para[1];
+	cs->hw.teles3.hscx[0] = -0x20;
+	cs->hw.teles3.hscx[1] = 0x0;
+	cs->hw.teles3.isac = 0x20;
+	cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e;
+	cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e;
+	cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e;
+	cs->irq = card->para[0];
+	if (check_region(cs->hw.teles3.cfg_reg,8)) {
+		printk(KERN_WARNING
+		       "HiSax: %s ports %x-%x already in use\n",
+		       CardType[cs->typ],
+                       cs->hw.teles3.cfg_reg,
+                       cs->hw.teles3.cfg_reg + 7);
+		return 0;
+	} else
+		request_region(cs->hw.teles3.cfg_reg, 8, "S0Box parallel I/O");
+	printk(KERN_INFO
+	       "HiSax: %s config irq:%d isac:0x%x  cfg:0x%x\n",
+	       CardType[cs->typ], cs->irq,
+	       cs->hw.teles3.isac, cs->hw.teles3.cfg_reg);
+	printk(KERN_INFO
+	       "HiSax: hscx A:0x%x  hscx B:0x%x\n",
+	       cs->hw.teles3.hscx[0], cs->hw.teles3.hscx[1]);
+	cs->readisac = &ReadISAC;
+	cs->writeisac = &WriteISAC;
+	cs->readisacfifo = &ReadISACfifo;
+	cs->writeisacfifo = &WriteISACfifo;
+	cs->BC_Read_Reg = &ReadHSCX;
+	cs->BC_Write_Reg = &WriteHSCX;
+	cs->BC_Send_Data = &hscx_fill_fifo;
+	cs->cardmsg = &S0Box_card_msg;
+	ISACVersion(cs, "S0Box:");
+	if (HscxVersion(cs, "S0Box:")) {
+		printk(KERN_WARNING
+		       "S0Box: wrong HSCX versions check IO address\n");
+		release_io_s0box(cs);
+		return (0);
+	}
+	return (1);
+}