Initial import

1 files changed, 260 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/s0box.c b/drivers/isdn/hisax/s0box.c
new file mode 100644
index 000000000..4e7d0aa22
--- /dev/null
+++ b/drivers/isdn/hisax/s0box.c
@@ -0,0 +1,260 @@
+/* $Id: s0box.c,v 2.6.2.4 2004/01/13 23:48:39 keil Exp $
+ *
+ * low level stuff for Creatix S0BOX
+ *
+ * Author       Enrik Berkhan
+ * Copyright    by Enrik Berkhan <enrik@starfleet.inka.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/init.h>
+#include "hisax.h"
+#include "isac.h"
+#include "hscx.h"
+#include "isdnl1.h"
+
+static const char *s0box_revision = "$Revision: 2.6.2.4 $";
+
+static inline void
+writereg(unsigned int padr, signed int addr, u_char off, u_char val) {
+	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);
+}
+
+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;
+
+	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);
+	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 irqreturn_t
+s0box_interrupt(int intno, void *dev_id)
+{
+#define MAXCOUNT 5
+	struct IsdnCardState *cs = dev_id;
+	u_char val;
+	u_long flags;
+	int count = 0;
+
+	spin_lock_irqsave(&cs->lock, flags);
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA);
+Start_HSCX:
+	if (val)
+		hscx_int_main(cs, val);
+	val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA);
+Start_ISAC:
+	if (val)
+		isac_interrupt(cs, val);
+	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);
+	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.isac, ISAC_MASK, 0xFF);
+	writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0);
+	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);
+	spin_unlock_irqrestore(&cs->lock, flags);
+	return IRQ_HANDLED;
+}
+
+static 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)
+{
+	u_long flags;
+
+	switch (mt) {
+	case CARD_RESET:
+		break;
+	case CARD_RELEASE:
+		release_io_s0box(cs);
+		break;
+	case CARD_INIT:
+		spin_lock_irqsave(&cs->lock, flags);
+		inithscxisac(cs, 3);
+		spin_unlock_irqrestore(&cs->lock, flags);
+		break;
+	case CARD_TEST:
+		break;
+	}
+	return (0);
+}
+
+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 (!request_region(cs->hw.teles3.cfg_reg, 8, "S0Box parallel I/O")) {
+		printk(KERN_WARNING "HiSax: S0Box ports %x-%x already in use\n",
+		       cs->hw.teles3.cfg_reg,
+		       cs->hw.teles3.cfg_reg + 7);
+		return 0;
+	}
+	printk(KERN_INFO "HiSax: S0Box config irq:%d isac:0x%x  cfg:0x%x\n",
+	       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]);
+	setup_isac(cs);
+	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;
+	cs->irq_func = &s0box_interrupt;
+	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);
+}