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path: root/drivers/isdn/hisax/teleint.c
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-rw-r--r--drivers/isdn/hisax/teleint.c334
1 files changed, 334 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/teleint.c b/drivers/isdn/hisax/teleint.c
new file mode 100644
index 000000000..247aa3307
--- /dev/null
+++ b/drivers/isdn/hisax/teleint.c
@@ -0,0 +1,334 @@
+/* $Id: teleint.c,v 1.16.2.5 2004/01/19 15:31:50 keil Exp $
+ *
+ * low level stuff for TeleInt isdn cards
+ *
+ * Author Karsten Keil
+ * Copyright by Karsten Keil <keil@isdn4linux.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 "hfc_2bs0.h"
+#include "isdnl1.h"
+
+static const char *TeleInt_revision = "$Revision: 1.16.2.5 $";
+
+#define byteout(addr, val) outb(val, addr)
+#define bytein(addr) inb(addr)
+
+static inline u_char
+readreg(unsigned int ale, unsigned int adr, u_char off)
+{
+ register u_char ret;
+ int max_delay = 2000;
+
+ byteout(ale, off);
+ ret = HFC_BUSY & bytein(ale);
+ while (ret && --max_delay)
+ ret = HFC_BUSY & bytein(ale);
+ if (!max_delay) {
+ printk(KERN_WARNING "TeleInt Busy not inactive\n");
+ return (0);
+ }
+ ret = bytein(adr);
+ return (ret);
+}
+
+static inline void
+readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+ register u_char ret;
+ register int max_delay = 20000;
+ register int i;
+
+ byteout(ale, off);
+ for (i = 0; i < size; i++) {
+ ret = HFC_BUSY & bytein(ale);
+ while (ret && --max_delay)
+ ret = HFC_BUSY & bytein(ale);
+ if (!max_delay) {
+ printk(KERN_WARNING "TeleInt Busy not inactive\n");
+ return;
+ }
+ data[i] = bytein(adr);
+ }
+}
+
+
+static inline void
+writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
+{
+ register u_char ret;
+ int max_delay = 2000;
+
+ byteout(ale, off);
+ ret = HFC_BUSY & bytein(ale);
+ while (ret && --max_delay)
+ ret = HFC_BUSY & bytein(ale);
+ if (!max_delay) {
+ printk(KERN_WARNING "TeleInt Busy not inactive\n");
+ return;
+ }
+ byteout(adr, data);
+}
+
+static inline void
+writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
+{
+ register u_char ret;
+ register int max_delay = 20000;
+ register int i;
+
+ byteout(ale, off);
+ for (i = 0; i < size; i++) {
+ ret = HFC_BUSY & bytein(ale);
+ while (ret && --max_delay)
+ ret = HFC_BUSY & bytein(ale);
+ if (!max_delay) {
+ printk(KERN_WARNING "TeleInt Busy not inactive\n");
+ return;
+ }
+ byteout(adr, data[i]);
+ }
+}
+
+/* Interface functions */
+
+static u_char
+ReadISAC(struct IsdnCardState *cs, u_char offset)
+{
+ cs->hw.hfc.cip = offset;
+ return (readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset));
+}
+
+static void
+WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+ cs->hw.hfc.cip = offset;
+ writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, offset, value);
+}
+
+static void
+ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+ cs->hw.hfc.cip = 0;
+ readfifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
+}
+
+static void
+WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
+{
+ cs->hw.hfc.cip = 0;
+ writefifo(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, 0, data, size);
+}
+
+static u_char
+ReadHFC(struct IsdnCardState *cs, int data, u_char reg)
+{
+ register u_char ret;
+
+ if (data) {
+ cs->hw.hfc.cip = reg;
+ byteout(cs->hw.hfc.addr | 1, reg);
+ ret = bytein(cs->hw.hfc.addr);
+ if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
+ debugl1(cs, "hfc RD %02x %02x", reg, ret);
+ } else
+ ret = bytein(cs->hw.hfc.addr | 1);
+ return (ret);
+}
+
+static void
+WriteHFC(struct IsdnCardState *cs, int data, u_char reg, u_char value)
+{
+ byteout(cs->hw.hfc.addr | 1, reg);
+ cs->hw.hfc.cip = reg;
+ if (data)
+ byteout(cs->hw.hfc.addr, value);
+ if (cs->debug & L1_DEB_HSCX_FIFO && (data != 2))
+ debugl1(cs, "hfc W%c %02x %02x", data ? 'D' : 'C', reg, value);
+}
+
+static irqreturn_t
+TeleInt_interrupt(int intno, void *dev_id)
+{
+ struct IsdnCardState *cs = dev_id;
+ u_char val;
+ u_long flags;
+
+ spin_lock_irqsave(&cs->lock, flags);
+ val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
+Start_ISAC:
+ if (val)
+ isac_interrupt(cs, val);
+ val = readreg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_ISTA);
+ if (val) {
+ if (cs->debug & L1_DEB_ISAC)
+ debugl1(cs, "ISAC IntStat after IntRoutine");
+ goto Start_ISAC;
+ }
+ writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0xFF);
+ writereg(cs->hw.hfc.addr | 1, cs->hw.hfc.addr, ISAC_MASK, 0x0);
+ spin_unlock_irqrestore(&cs->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static void
+TeleInt_Timer(struct timer_list *t)
+{
+ struct IsdnCardState *cs = from_timer(cs, t, hw.hfc.timer);
+ int stat = 0;
+ u_long flags;
+
+ spin_lock_irqsave(&cs->lock, flags);
+ if (cs->bcs[0].mode) {
+ stat |= 1;
+ main_irq_hfc(&cs->bcs[0]);
+ }
+ if (cs->bcs[1].mode) {
+ stat |= 2;
+ main_irq_hfc(&cs->bcs[1]);
+ }
+ spin_unlock_irqrestore(&cs->lock, flags);
+ stat = HZ / 100;
+ if (!stat)
+ stat = 1;
+ cs->hw.hfc.timer.expires = jiffies + stat;
+ add_timer(&cs->hw.hfc.timer);
+}
+
+static void
+release_io_TeleInt(struct IsdnCardState *cs)
+{
+ del_timer(&cs->hw.hfc.timer);
+ releasehfc(cs);
+ if (cs->hw.hfc.addr)
+ release_region(cs->hw.hfc.addr, 2);
+}
+
+static void
+reset_TeleInt(struct IsdnCardState *cs)
+{
+ printk(KERN_INFO "TeleInt: resetting card\n");
+ cs->hw.hfc.cirm |= HFC_RESET;
+ byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset On */
+ mdelay(10);
+ cs->hw.hfc.cirm &= ~HFC_RESET;
+ byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm); /* Reset Off */
+ mdelay(10);
+}
+
+static int
+TeleInt_card_msg(struct IsdnCardState *cs, int mt, void *arg)
+{
+ u_long flags;
+ int delay;
+
+ switch (mt) {
+ case CARD_RESET:
+ spin_lock_irqsave(&cs->lock, flags);
+ reset_TeleInt(cs);
+ spin_unlock_irqrestore(&cs->lock, flags);
+ return (0);
+ case CARD_RELEASE:
+ release_io_TeleInt(cs);
+ return (0);
+ case CARD_INIT:
+ spin_lock_irqsave(&cs->lock, flags);
+ reset_TeleInt(cs);
+ inithfc(cs);
+ clear_pending_isac_ints(cs);
+ initisac(cs);
+ /* Reenable all IRQ */
+ cs->writeisac(cs, ISAC_MASK, 0);
+ cs->writeisac(cs, ISAC_CMDR, 0x41);
+ spin_unlock_irqrestore(&cs->lock, flags);
+ delay = HZ / 100;
+ if (!delay)
+ delay = 1;
+ cs->hw.hfc.timer.expires = jiffies + delay;
+ add_timer(&cs->hw.hfc.timer);
+ return (0);
+ case CARD_TEST:
+ return (0);
+ }
+ return (0);
+}
+
+int setup_TeleInt(struct IsdnCard *card)
+{
+ struct IsdnCardState *cs = card->cs;
+ char tmp[64];
+
+ strcpy(tmp, TeleInt_revision);
+ printk(KERN_INFO "HiSax: TeleInt driver Rev. %s\n", HiSax_getrev(tmp));
+ if (cs->typ != ISDN_CTYPE_TELEINT)
+ return (0);
+
+ cs->hw.hfc.addr = card->para[1] & 0x3fe;
+ cs->irq = card->para[0];
+ cs->hw.hfc.cirm = HFC_CIRM;
+ cs->hw.hfc.isac_spcr = 0x00;
+ cs->hw.hfc.cip = 0;
+ cs->hw.hfc.ctmt = HFC_CTMT | HFC_CLTIMER;
+ cs->bcs[0].hw.hfc.send = NULL;
+ cs->bcs[1].hw.hfc.send = NULL;
+ cs->hw.hfc.fifosize = 7 * 1024 + 512;
+ timer_setup(&cs->hw.hfc.timer, TeleInt_Timer, 0);
+ if (!request_region(cs->hw.hfc.addr, 2, "TeleInt isdn")) {
+ printk(KERN_WARNING
+ "HiSax: TeleInt config port %x-%x already in use\n",
+ cs->hw.hfc.addr,
+ cs->hw.hfc.addr + 2);
+ return (0);
+ }
+ /* HW IO = IO */
+ byteout(cs->hw.hfc.addr, cs->hw.hfc.addr & 0xff);
+ byteout(cs->hw.hfc.addr | 1, ((cs->hw.hfc.addr & 0x300) >> 8) | 0x54);
+ switch (cs->irq) {
+ case 3:
+ cs->hw.hfc.cirm |= HFC_INTA;
+ break;
+ case 4:
+ cs->hw.hfc.cirm |= HFC_INTB;
+ break;
+ case 5:
+ cs->hw.hfc.cirm |= HFC_INTC;
+ break;
+ case 7:
+ cs->hw.hfc.cirm |= HFC_INTD;
+ break;
+ case 10:
+ cs->hw.hfc.cirm |= HFC_INTE;
+ break;
+ case 11:
+ cs->hw.hfc.cirm |= HFC_INTF;
+ break;
+ default:
+ printk(KERN_WARNING "TeleInt: wrong IRQ\n");
+ release_io_TeleInt(cs);
+ return (0);
+ }
+ byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.cirm);
+ byteout(cs->hw.hfc.addr | 1, cs->hw.hfc.ctmt);
+
+ printk(KERN_INFO "TeleInt: defined at 0x%x IRQ %d\n",
+ cs->hw.hfc.addr, cs->irq);
+
+ setup_isac(cs);
+ cs->readisac = &ReadISAC;
+ cs->writeisac = &WriteISAC;
+ cs->readisacfifo = &ReadISACfifo;
+ cs->writeisacfifo = &WriteISACfifo;
+ cs->BC_Read_Reg = &ReadHFC;
+ cs->BC_Write_Reg = &WriteHFC;
+ cs->cardmsg = &TeleInt_card_msg;
+ cs->irq_func = &TeleInt_interrupt;
+ ISACVersion(cs, "TeleInt:");
+ return (1);
+}
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