patch-2.2.11 linux/drivers/isdn/hisax/asuscom.c

• Lines: 322
• Date: Mon Aug 9 12:04:39 1999
• Orig file: v2.2.10/linux/drivers/isdn/hisax/asuscom.c
• Orig date: Thu Nov 5 09:58:43 1998

diff -u --recursive --new-file v2.2.10/linux/drivers/isdn/hisax/asuscom.c linux/drivers/isdn/hisax/asuscom.c
@@ -1,13 +1,29 @@
-/* $Id: asuscom.c,v 1.2 1998/02/02 13:27:06 keil Exp $
+/* $Id: asuscom.c,v 1.7 1999/07/12 21:04:53 keil Exp $
 
  * asuscom.c     low level stuff for ASUSCOM NETWORK INC. ISDNLink cards
  *
- * Author     Karsten Keil (keil@temic-ech.spacenet.de)
+ * Author     Karsten Keil (keil@isdn4linux.de)
  *
  * Thanks to  ASUSCOM NETWORK INC. Taiwan and  Dynalink NL for informations
  *
  *
  * $Log: asuscom.c,v $
+ * Revision 1.7  1999/07/12 21:04:53  keil
+ * fix race in IRQ handling
+ * added watchdog for lost IRQs
+ *
+ * Revision 1.6  1999/07/01 08:11:18  keil
+ * Common HiSax version for 2.0, 2.1, 2.2 and 2.3 kernel
+ *
+ * Revision 1.5  1998/11/15 23:54:19  keil
+ * changes from 2.0
+ *
+ * Revision 1.4  1998/06/18 23:18:20  keil
+ * Support for new IPAC card
+ *
+ * Revision 1.3  1998/04/15 16:46:53  keil
+ * new init code
+ *
  * Revision 1.2  1998/02/02 13:27:06  keil
  * New
  *
@@ -17,12 +33,13 @@
 #define __NO_VERSION__
 #include "hisax.h"
 #include "isac.h"
+#include "ipac.h"
 #include "hscx.h"
 #include "isdnl1.h"
 
 extern const char *CardType[];
 
-const char *Asuscom_revision = "$Revision: 1.2 $";
+const char *Asuscom_revision = "$Revision: 1.7 $";
 
 #define byteout(addr,val) outb(val,addr)
 #define bytein(addr) inb(addr)
@@ -33,6 +50,12 @@
 #define ASUS_CTRL_U7	3
 #define ASUS_CTRL_POTS	5
 
+#define ASUS_IPAC_ALE	0
+#define ASUS_IPAC_DATA	1
+
+#define ASUS_ISACHSCX	1
+#define ASUS_IPAC	2
+
 /* CARD_ADR (Write) */
 #define ASUS_RESET      0x80	/* Bit 7 Reset-Leitung */
 
@@ -107,6 +130,30 @@
 }
 
 static u_char
+ReadISAC_IPAC(struct IsdnCardState *cs, u_char offset)
+{
+	return (readreg(cs->hw.asus.adr, cs->hw.asus.isac, offset|0x80));
+}
+
+static void
+WriteISAC_IPAC(struct IsdnCardState *cs, u_char offset, u_char value)
+{
+	writereg(cs->hw.asus.adr, cs->hw.asus.isac, offset|0x80, value);
+}
+
+static void
+ReadISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
+{
+	readfifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
+}
+
+static void
+WriteISACfifo_IPAC(struct IsdnCardState *cs, u_char * data, int size)
+{
+	writefifo(cs->hw.asus.adr, cs->hw.asus.isac, 0x80, data, size);
+}
+
+static u_char
 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 {
 	return (readreg(cs->hw.asus.adr,
@@ -141,7 +188,7 @@
 asuscom_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 {
 	struct IsdnCardState *cs = dev_id;
-	u_char val, stat = 0;
+	u_char val;
 
 	if (!cs) {
 		printk(KERN_WARNING "ISDNLink: Spurious interrupt!\n");
@@ -149,16 +196,12 @@
 	}
 	val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
       Start_HSCX:
-	if (val) {
+	if (val)
 		hscx_int_main(cs, val);
-		stat |= 1;
-	}
 	val = readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA);
       Start_ISAC:
-	if (val) {
+	if (val)
 		isac_interrupt(cs, val);
-		stat |= 2;
-	}
 	val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
 	if (val) {
 		if (cs->debug & L1_DEB_HSCX)
@@ -171,16 +214,58 @@
 			debugl1(cs, "ISAC IntStat after IntRoutine");
 		goto Start_ISAC;
 	}
-	if (stat & 1) {
-		writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0xFF);
-		writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0xFF);
-		writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0x0);
-		writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0x0);
-	}
-	if (stat & 2) {
-		writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0xFF);
-		writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0x0);
+	writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0xFF);
+	writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0xFF);
+	writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0xFF);
+	writereg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_MASK, 0x0);
+	writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK, 0x0);
+	writereg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_MASK + 0x40, 0x0);
+}
+
+static void
+asuscom_interrupt_ipac(int intno, void *dev_id, struct pt_regs *regs)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char ista, val, icnt = 5;
+
+	if (!cs) {
+		printk(KERN_WARNING "ISDNLink: Spurious interrupt!\n");
+		return;
+	}
+	ista = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
+Start_IPAC:
+	if (cs->debug & L1_DEB_IPAC)
+		debugl1(cs, "IPAC ISTA %02X", ista);
+	if (ista & 0x0f) {
+		val = readreg(cs->hw.asus.adr, cs->hw.asus.hscx, HSCX_ISTA + 0x40);
+		if (ista & 0x01)
+			val |= 0x01;
+		if (ista & 0x04)
+			val |= 0x02;
+		if (ista & 0x08)
+			val |= 0x04;
+		if (val)
+			hscx_int_main(cs, val);
+	}
+	if (ista & 0x20) {
+		val = 0xfe & readreg(cs->hw.asus.adr, cs->hw.asus.isac, ISAC_ISTA | 0x80);
+		if (val) {
+			isac_interrupt(cs, val);
+		}
+	}
+	if (ista & 0x10) {
+		val = 0x01;
+		isac_interrupt(cs, val);
+	}
+	ista  = readreg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ISTA);
+	if ((ista & 0x3f) && icnt) {
+		icnt--;
+		goto Start_IPAC;
 	}
+	if (!icnt)
+		printk(KERN_WARNING "ASUS IRQ LOOP\n");
+	writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xFF);
+	writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xC0);
 }
 
 void
@@ -197,14 +282,27 @@
 {
 	long flags;
 
-	byteout(cs->hw.asus.adr, ASUS_RESET);	/* Reset On */
+	if (cs->subtyp == ASUS_IPAC)
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x20);
+	else
+		byteout(cs->hw.asus.adr, ASUS_RESET);	/* Reset On */
 	save_flags(flags);
 	sti();
 	current->state = TASK_INTERRUPTIBLE;
-	schedule_timeout(1);
-	byteout(cs->hw.asus.adr, 0);	/* Reset Off */
+	schedule_timeout((10*HZ)/1000);
+	if (cs->subtyp == ASUS_IPAC)
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_POTA2, 0x0);
+	else
+		byteout(cs->hw.asus.adr, 0);	/* Reset Off */
 	current->state = TASK_INTERRUPTIBLE;
-	schedule_timeout(1);
+	schedule_timeout((10*HZ)/1000);
+	if (cs->subtyp == ASUS_IPAC) {
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_CONF, 0x0);
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_ACFG, 0xff);
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_AOE, 0x0);
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_MASK, 0xc0);
+		writereg(cs->hw.asus.adr, cs->hw.asus.isac, IPAC_PCFG, 0x12);
+	}
 	restore_flags(flags);
 }
 
@@ -218,14 +316,9 @@
 		case CARD_RELEASE:
 			release_io_asuscom(cs);
 			return(0);
-		case CARD_SETIRQ:
-			return(request_irq(cs->irq, &asuscom_interrupt,
-					I4L_IRQ_FLAG, "HiSax", cs));
 		case CARD_INIT:
-			clear_pending_isac_ints(cs);
-			clear_pending_hscx_ints(cs);
-			initisac(cs);
-			inithscx(cs);
+			cs->debug |= L1_DEB_IPAC;
+			inithscxisac(cs, 3);
 			return(0);
 		case CARD_TEST:
 			return(0);
@@ -238,6 +331,7 @@
 {
 	int bytecnt;
 	struct IsdnCardState *cs = card->cs;
+	u_char val;
 	char tmp[64];
 
 	strcpy(tmp, Asuscom_revision);
@@ -248,12 +342,6 @@
 	bytecnt = 8;
 	cs->hw.asus.cfg_reg = card->para[1];
 	cs->irq = card->para[0];
-	cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_ADR;
-	cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_ISAC;
-	cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_HSCX;
-	cs->hw.asus.u7 = cs->hw.asus.cfg_reg + ASUS_CTRL_U7;
-	cs->hw.asus.pots = cs->hw.asus.cfg_reg + ASUS_CTRL_POTS;
-
 	if (check_region((cs->hw.asus.cfg_reg), bytecnt)) {
 		printk(KERN_WARNING
 		       "HiSax: %s config port %x-%x already in use\n",
@@ -264,27 +352,47 @@
 	} else {
 		request_region(cs->hw.asus.cfg_reg, bytecnt, "asuscom isdn");
 	}
-
-	printk(KERN_INFO
-	       "ISDNLink: defined at 0x%x IRQ %d\n",
-	       cs->hw.asus.cfg_reg,
-	       cs->irq);
-	printk(KERN_INFO "ISDNLink: resetting card\n");
-	reset_asuscom(cs);
-	cs->readisac = &ReadISAC;
-	cs->writeisac = &WriteISAC;
-	cs->readisacfifo = &ReadISACfifo;
-	cs->writeisacfifo = &WriteISACfifo;
+	printk(KERN_INFO "ISDNLink: defined at 0x%x IRQ %d\n",
+		cs->hw.asus.cfg_reg, cs->irq);
 	cs->BC_Read_Reg = &ReadHSCX;
 	cs->BC_Write_Reg = &WriteHSCX;
 	cs->BC_Send_Data = &hscx_fill_fifo;
 	cs->cardmsg = &Asus_card_msg;
-	ISACVersion(cs, "ISDNLink:");
-	if (HscxVersion(cs, "ISDNLink:")) {
-		printk(KERN_WARNING
-		     "ISDNLink: wrong HSCX versions check IO address\n");
-		release_io_asuscom(cs);
-		return (0);
+	val = readreg(cs->hw.asus.cfg_reg + ASUS_IPAC_ALE, 
+		cs->hw.asus.cfg_reg + ASUS_IPAC_DATA, IPAC_ID);
+	if (val == 1) {
+		cs->subtyp = ASUS_IPAC;
+		cs->hw.asus.adr  = cs->hw.asus.cfg_reg + ASUS_IPAC_ALE;
+		cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
+		cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_IPAC_DATA;
+		test_and_set_bit(HW_IPAC, &cs->HW_Flags);
+		cs->readisac = &ReadISAC_IPAC;
+		cs->writeisac = &WriteISAC_IPAC;
+		cs->readisacfifo = &ReadISACfifo_IPAC;
+		cs->writeisacfifo = &WriteISACfifo_IPAC;
+		cs->irq_func = &asuscom_interrupt_ipac;
+		printk(KERN_INFO "Asus: IPAC version %x\n", val);
+	} else {
+		cs->subtyp = ASUS_ISACHSCX;
+		cs->hw.asus.adr = cs->hw.asus.cfg_reg + ASUS_ADR;
+		cs->hw.asus.isac = cs->hw.asus.cfg_reg + ASUS_ISAC;
+		cs->hw.asus.hscx = cs->hw.asus.cfg_reg + ASUS_HSCX;
+		cs->hw.asus.u7 = cs->hw.asus.cfg_reg + ASUS_CTRL_U7;
+		cs->hw.asus.pots = cs->hw.asus.cfg_reg + ASUS_CTRL_POTS;
+		cs->readisac = &ReadISAC;
+		cs->writeisac = &WriteISAC;
+		cs->readisacfifo = &ReadISACfifo;
+		cs->writeisacfifo = &WriteISACfifo;
+		cs->irq_func = &asuscom_interrupt;
+		ISACVersion(cs, "ISDNLink:");
+		if (HscxVersion(cs, "ISDNLink:")) {
+			printk(KERN_WARNING
+		     	"ISDNLink: wrong HSCX versions check IO address\n");
+			release_io_asuscom(cs);
+			return (0);
+		}
 	}
+	printk(KERN_INFO "ISDNLink: resetting card\n");
+	reset_asuscom(cs);
 	return (1);
 }