patch-2.1.92 linux/drivers/isdn/hisax/mic.c

• Lines: 285
• Date: Wed Apr 1 16:21:02 1998
• Orig file: v2.1.91/linux/drivers/isdn/hisax/mic.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.91/linux/drivers/isdn/hisax/mic.c linux/drivers/isdn/hisax/mic.c
@@ -0,0 +1,284 @@
+/* $Id: mic.c,v 1.6 1998/02/17 15:39:57 keil Exp $
+
+ * mic.c  low level stuff for mic cards
+ *
+ * Copyright (C) 1997 
+ *
+ * Author  Stephan von Krawczynski <skraw@ithnet.com>
+ *
+ *
+ * $Log: mic.c,v $
+ * Revision 1.6  1998/02/17 15:39:57  keil
+ * fix reset problem
+ *
+ * Revision 1.5  1998/02/02 13:29:43  keil
+ * fast io
+ *
+ * Revision 1.4  1997/11/08 21:35:51  keil
+ * new l1 init
+ *
+ * Revision 1.3  1997/11/06 17:09:11  keil
+ * New 2.1 init code
+ *
+ * Revision 1.2  1997/10/29 18:51:17  keil
+ * New files
+ *
+ * Revision 1.1.2.1  1997/10/17 22:10:54  keil
+ * new files on 2.0
+ *
+ *
+ */
+
+#define __NO_VERSION__
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+extern const char *CardType[];
+
+const char *mic_revision = "$Revision: 1.6 $";
+
+#define byteout(addr,val) outb(val,addr)
+#define bytein(addr) inb(addr)
+
+#define MIC_ISAC	2
+#define MIC_HSCX	1
+#define MIC_ADR		7
+
+/* CARD_ADR (Write) */
+#define MIC_RESET      0x3	/* same as DOS driver */
+
+static inline u_char
+readreg(unsigned int ale, unsigned int adr, u_char off)
+{
+	register u_char ret;
+	long flags;
+
+	save_flags(flags);
+	cli();
+	byteout(ale, off);
+	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)
+{
+	/* fifo read without cli because it's allready done  */
+
+	byteout(ale, off);
+	insb(adr, data, size);
+}
+
+
+static inline void
+writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
+{
+	long flags;
+
+	save_flags(flags);
+	cli();
+	byteout(ale, off);
+	byteout(adr, data);
+	restore_flags(flags);
+}
+
+static inline void
+writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
+{
+	/* fifo write without cli because it's allready done  */
+	byteout(ale, off);
+	outsb(adr, data, size);
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
+{
+	writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
+}
+
+static u_char
+ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
+{
+	return (readreg(cs->hw.mic.adr,
+			cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
+}
+
+static void
+WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
+{
+	writereg(cs->hw.mic.adr,
+		 cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
+}
+
+/*
+ * fast interrupt HSCX stuff goes here
+ */
+
+#define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \
+		cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
+#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \
+		cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)
+
+#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \
+		cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \
+		cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
+
+#include "hscx_irq.c"
+
+static void
+mic_interrupt(int intno, void *dev_id, struct pt_regs *regs)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val, stat = 0;
+
+	if (!cs) {
+		printk(KERN_WARNING "mic: Spurious interrupt!\n");
+		return;
+	}
+	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
+      Start_HSCX:
+	if (val) {
+		hscx_int_main(cs, val);
+		stat |= 1;
+	}
+	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
+      Start_ISAC:
+	if (val) {
+		isac_interrupt(cs, val);
+		stat |= 2;
+	}
+	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
+	if (val) {
+		if (cs->debug & L1_DEB_HSCX)
+			debugl1(cs, "HSCX IntStat after IntRoutine");
+		goto Start_HSCX;
+	}
+	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
+	if (val) {
+		if (cs->debug & L1_DEB_ISAC)
+			debugl1(cs, "ISAC IntStat after IntRoutine");
+		goto Start_ISAC;
+	}
+	if (stat & 1) {
+		writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
+		writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
+		writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
+		writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
+	}
+	if (stat & 2) {
+		writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
+		writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
+	}
+}
+
+void
+release_io_mic(struct IsdnCardState *cs)
+{
+	int bytecnt = 8;
+
+	if (cs->hw.mic.cfg_reg)
+		release_region(cs->hw.mic.cfg_reg, bytecnt);
+}
+
+static int
+mic_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+	switch (mt) {
+		case CARD_RESET:
+			return(0);
+		case CARD_RELEASE:
+			release_io_mic(cs);
+			return(0);
+		case CARD_SETIRQ:
+			return(request_irq(cs->irq, &mic_interrupt,
+					I4L_IRQ_FLAG, "HiSax", cs));
+		case CARD_INIT:
+			inithscx(cs); /* /RTSA := ISAC RST */
+			clear_pending_isac_ints(cs);
+			clear_pending_hscx_ints(cs);
+			initisac(cs);
+			inithscx(cs);
+			return(0);
+		case CARD_TEST:
+			return(0);
+	}
+	return(0);
+}
+
+__initfunc(int
+setup_mic(struct IsdnCard *card))
+{
+	int bytecnt;
+	struct IsdnCardState *cs = card->cs;
+	char tmp[64];
+
+	strcpy(tmp, mic_revision);
+	printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
+	if (cs->typ != ISDN_CTYPE_MIC)
+		return (0);
+
+	bytecnt = 8;
+	cs->hw.mic.cfg_reg = card->para[1];
+	cs->irq = card->para[0];
+	cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
+	cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
+	cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
+
+	if (check_region((cs->hw.mic.cfg_reg), bytecnt)) {
+		printk(KERN_WARNING
+		       "HiSax: %s config port %x-%x already in use\n",
+		       CardType[card->typ],
+		       cs->hw.mic.cfg_reg,
+		       cs->hw.mic.cfg_reg + bytecnt);
+		return (0);
+	} else {
+		request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn");
+	}
+
+	printk(KERN_INFO
+	       "mic: defined at 0x%x IRQ %d\n",
+	       cs->hw.mic.cfg_reg,
+	       cs->irq);
+	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 = &mic_card_msg;
+	ISACVersion(cs, "mic:");
+	if (HscxVersion(cs, "mic:")) {
+		printk(KERN_WARNING
+		    "mic: wrong HSCX versions check IO address\n");
+		release_io_mic(cs);
+		return (0);
+	}
+	return (1);
+}