interrupt.c
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上传日期:2013-02-24
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文件大小:7k
- /* $Id: interrupt.c,v 1.1.4.1 2001/11/20 14:19:37 kai Exp $
- *
- * Copyright (C) 1996 SpellCaster Telecommunications Inc.
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * 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 int indicate_status(int, int, ulong, char *);
- extern void check_phystat(unsigned long);
- 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 idn", card);
- return;
- }
- pr_debug("%s: Entered Interrupt handlern", 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 = %dn",
- 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%xn",
- 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 %dn", 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%xn",
- 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 Rspn", 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 Incoming Calln", 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%xn",
- 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 messagen", 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 %dn", 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%2xn", 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 HDLCn",
- 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 %dn",
- adapter[card]->devicename, rcvmsg.type, rcvmsg.class, rcvmsg.code,
- rcvmsg.phy_link_no);
- } /* while */
- pr_debug("%s: Exiting Interrupt Handlern", adapter[card]->devicename);
- }