/* $Id: interrupt.c,v 1.4.8.3 2001/09/23 22:24:59 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 */ #include "includes.h" #include "hardware.h" #include "message.h" #include "card.h" #include 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 *sc_adapter[]; int get_card_from_irq(int irq) { int i; for(i = 0 ; i < cinst ; i++) { if(sc_adapter[i]->interrupt == irq) return i; } return -1; } /* * */ irqreturn_t 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 IRQ_NONE; } pr_debug("%s: Entered Interrupt handler\n", sc_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(sc_adapter[card]->want_async_messages) memcpy(&(sc_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", sc_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", sc_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", sc_adapter[card]->devicename, rcvmsg.phy_link_no); sc_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", sc_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", sc_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 Call\n", sc_adapter[card]->devicename); strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4])); strcpy(setup.eazmsn, sc_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", sc_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", sc_adapter[card]->devicename); sc_adapter[card]->EngineUp = 1; sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL); sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL); init_timer(&sc_adapter[card]->stat_timer); sc_adapter[card]->stat_timer.function = check_phystat; sc_adapter[card]->stat_timer.data = card; sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME; add_timer(&sc_adapter[card]->stat_timer); continue; } /* * Start proc response */ if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) { pr_debug("%s: StartProc Response Status %d\n", sc_adapter[card]->devicename, rcvmsg.rsp_status); continue; } /* * Handle a GetMyNumber Rsp */ if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){ strcpy(sc_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]; sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */ pr_debug("%s: PhyStat is 0x%2x\n", sc_adapter[card]->devicename, sc_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", sc_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", sc_adapter[card]->devicename, rcvmsg.type, rcvmsg.class, rcvmsg.code, rcvmsg.phy_link_no); } /* while */ pr_debug("%s: Exiting Interrupt Handler\n", sc_adapter[card]->devicename); return IRQ_HANDLED; }