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path: root/drivers/isdn/hisax/s0box.c
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-rw-r--r--drivers/isdn/hisax/s0box.c266
1 files changed, 266 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/s0box.c b/drivers/isdn/hisax/s0box.c
new file mode 100644
index 000000000000..f3c481384a4e
--- /dev/null
+++ b/drivers/isdn/hisax/s0box.c
@@ -0,0 +1,266 @@
+/* $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"
+
+extern const char *CardType[];
+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, struct pt_regs *regs)
+{
+#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;
+}
+
+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 __init
+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: %s ports %x-%x already in use\n",
+ CardType[cs->typ],
+ cs->hw.teles3.cfg_reg,
+ cs->hw.teles3.cfg_reg + 7);
+ return 0;
+ }
+ 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]);
+ 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);
+}
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