patch-2.0.31 linux/drivers/isdn/sc/interrupt.c

• Lines: 259
• Date: Mon Aug 4 17:34:01 1997
• Orig file: v2.0.30/linux/drivers/isdn/sc/interrupt.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.0.30/linux/drivers/isdn/sc/interrupt.c linux/drivers/isdn/sc/interrupt.c
@@ -0,0 +1,258 @@
+/*
+ *  $Id: interrupt.c,v 1.3 1997/02/11 22:53:43 fritz Exp $
+ *  Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#define __NO_VERSION__
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+
+extern indicate_status(int, int, ulong, char *);
+extern void check_phystat(unsigned long);
+extern void dump_messages(int);
+extern int receivemessage(int, RspMessage *);
+extern int sendmessage(int, unsigned int, unsigned int, unsigned int,
+        unsigned int, unsigned int, unsigned int, unsigned int *);
+extern void rcvpkt(int, RspMessage *);
+
+extern int cinst;
+extern board *adapter[];
+
+int get_card_from_irq(int irq)
+{
+	int i;
+
+	for(i = 0 ; i < cinst ; i++) {
+		if(adapter[i]->interrupt == irq)
+			return i;
+	}
+	return -1;
+}
+
+/*
+ * 
+ */
+void interrupt_handler(int interrupt, void * cardptr, struct pt_regs *regs ) {
+
+	RspMessage rcvmsg;
+	int channel;
+	int card;
+
+	card = get_card_from_irq(interrupt);
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return;
+	}
+
+	pr_debug("%s: Entered Interrupt handler\n", adapter[card]->devicename);
+	
+ 	/*
+	 * Pull all of the waiting messages off the response queue
+	 */
+	while (!receivemessage(card, &rcvmsg)) {
+		/*
+		 * Push the message to the adapter structure for
+		 * send_and_receive to snoop
+		 */
+		if(adapter[card]->want_async_messages)
+			memcpy(&(adapter[card]->async_msg), &rcvmsg, sizeof(RspMessage));
+
+		channel = (unsigned int) rcvmsg.phy_link_no;
+		
+		/*
+		 * Trap Invalid request messages
+		 */
+		if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) {
+			pr_debug("%s: Invalid request Message, rsp_status = %d\n", 
+				adapter[card]->devicename, rcvmsg.rsp_status);
+			break;	
+		}
+		
+		/*
+		 * Check for a linkRead message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read))
+		{
+			pr_debug("%s: Received packet 0x%x bytes long at 0x%x\n",
+						adapter[card]->devicename,
+						rcvmsg.msg_data.response.msg_len,
+						rcvmsg.msg_data.response.buff_offset);
+			rcvpkt(card, &rcvmsg);
+			continue;
+
+		}
+
+		/*
+		 * Handle a write acknoledgement
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) {
+			pr_debug("%s: Packet Send ACK on channel %d\n", adapter[card]->devicename,
+				rcvmsg.phy_link_no);
+			adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++;
+			continue;
+		}
+
+		/*
+		 * Handle a connection message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) 
+		{
+			unsigned int callid;
+			setup_parm setup;	
+			pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n",
+						adapter[card]->devicename,
+						rcvmsg.phy_link_no,
+						rcvmsg.rsp_status,
+						rcvmsg.msg_data.byte_array[2]);
+			
+			memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int));
+			if(callid>=0x8000 && callid<=0xFFFF)
+			{		
+				pr_debug("%s: Got Dial-Out Rsp\n", adapter[card]->devicename);	
+				indicate_status(card, ISDN_STAT_DCONN,
+						(unsigned long)rcvmsg.phy_link_no-1,NULL);
+				
+			}
+			else if(callid>=0x0000 && callid<=0x7FFF)
+			{
+				pr_debug("%s: Got Incomming Call\n", adapter[card]->devicename);	
+				strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4]));
+				strcpy(setup.eazmsn,adapter[card]->channel[rcvmsg.phy_link_no-1].dn);
+				setup.si1 = 7;
+				setup.si2 = 0;
+				setup.plan = 0;
+				setup.screen = 0;
+
+				indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup);
+				indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			}
+			continue;
+		}
+
+		/*
+		 * Handle a disconnection message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) 
+		{
+			pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n",
+						adapter[card]->devicename,
+						rcvmsg.phy_link_no,
+						rcvmsg.rsp_status,
+					 	rcvmsg.msg_data.byte_array[2]);
+
+			indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			continue;
+
+		}
+
+		/*
+		 * Handle a startProc engine up message
+		 */
+		if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) {
+			pr_debug("%s: Received EngineUp message\n", adapter[card]->devicename);
+			adapter[card]->EngineUp = 1;
+			sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL);
+			sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL);
+			init_timer(&adapter[card]->stat_timer);
+			adapter[card]->stat_timer.function = check_phystat;
+			adapter[card]->stat_timer.data = card;
+			adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME;
+			add_timer(&adapter[card]->stat_timer);
+			continue;
+		}
+
+		/*
+		 * Start proc response
+		 */
+		if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) {
+			pr_debug("%s: StartProc Response Status %d\n", adapter[card]->devicename,
+				rcvmsg.rsp_status);
+			continue;
+		}
+
+		/*
+		 * Handle a GetMyNumber Rsp
+		 */
+		if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){
+			strcpy(adapter[card]->channel[rcvmsg.phy_link_no-1].dn,rcvmsg.msg_data.byte_array);
+			continue;
+		}
+			
+		/*
+		 * PhyStatus response
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) {
+			unsigned int b1stat, b2stat;
+
+			/*
+			 * Covert the message data to the adapter->phystat code
+			 */
+			b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0];
+			b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1];
+
+			adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */
+			pr_debug("%s: PhyStat is 0x%2x\n", adapter[card]->devicename,
+				adapter[card]->nphystat);
+			continue;
+		}
+
+
+		/* 
+		 * Handle a GetFramFormat
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) {
+			if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) {
+				unsigned int proto = HDLC_PROTO;
+				/*
+				 * Set board format to HDLC if it wasn't already
+				 */
+				pr_debug("%s: current frame format: 0x%x, will change to HDLC\n",
+						adapter[card]->devicename,
+					rcvmsg.msg_data.byte_array[0]);
+				sendmessage(card, CEPID, ceReqTypeCall,
+						ceReqClass0,
+						ceReqCallSetFrameFormat,
+						(unsigned char) channel +1,
+						1,&proto);
+				}
+			continue;
+		}
+
+		/*
+		 * Hmm...
+		 */
+		pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n",
+			adapter[card]->devicename, rcvmsg.type, rcvmsg.class, rcvmsg.code, 
+			rcvmsg.phy_link_no);
+
+	}	/* while */
+
+	pr_debug("%s: Exiting Interrupt Handler\n", adapter[card]->devicename);
+}