1/* $Id: interrupt.c,v 1.1.1.1 2007/08/03 18:52:36 Exp $ 2 * 3 * Copyright (C) 1996 SpellCaster Telecommunications Inc. 4 * 5 * This software may be used and distributed according to the terms 6 * of the GNU General Public License, incorporated herein by reference. 7 * 8 * For more information, please contact gpl-info@spellcast.com or write: 9 * 10 * SpellCaster Telecommunications Inc. 11 * 5621 Finch Avenue East, Unit #3 12 * Scarborough, Ontario Canada 13 * M1B 2T9 14 * +1 (416) 297-8565 15 * +1 (416) 297-6433 Facsimile 16 */ 17 18#include "includes.h" 19#include "hardware.h" 20#include "message.h" 21#include "card.h" 22#include <linux/interrupt.h> 23 24static int get_card_from_irq(int irq) 25{ 26 int i; 27 28 for(i = 0 ; i < cinst ; i++) { 29 if(sc_adapter[i]->interrupt == irq) 30 return i; 31 } 32 return -1; 33} 34 35/* 36 * 37 */ 38irqreturn_t interrupt_handler(int interrupt, void *cardptr) 39{ 40 41 RspMessage rcvmsg; 42 int channel; 43 int card; 44 45 card = get_card_from_irq(interrupt); 46 47 if(!IS_VALID_CARD(card)) { 48 pr_debug("Invalid param: %d is not a valid card id\n", card); 49 return IRQ_NONE; 50 } 51 52 pr_debug("%s: Entered Interrupt handler\n", 53 sc_adapter[card]->devicename); 54 55 /* 56 * Pull all of the waiting messages off the response queue 57 */ 58 while (!receivemessage(card, &rcvmsg)) { 59 /* 60 * Push the message to the adapter structure for 61 * send_and_receive to snoop 62 */ 63 if(sc_adapter[card]->want_async_messages) 64 memcpy(&(sc_adapter[card]->async_msg), 65 &rcvmsg, sizeof(RspMessage)); 66 67 channel = (unsigned int) rcvmsg.phy_link_no; 68 69 /* 70 * Trap Invalid request messages 71 */ 72 if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) { 73 pr_debug("%s: Invalid request Message, rsp_status = %d\n", 74 sc_adapter[card]->devicename, 75 rcvmsg.rsp_status); 76 break; 77 } 78 79 /* 80 * Check for a linkRead message 81 */ 82 if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read)) 83 { 84 pr_debug("%s: Received packet 0x%x bytes long at 0x%lx\n", 85 sc_adapter[card]->devicename, 86 rcvmsg.msg_data.response.msg_len, 87 rcvmsg.msg_data.response.buff_offset); 88 rcvpkt(card, &rcvmsg); 89 continue; 90 91 } 92 93 /* 94 * Handle a write acknoledgement 95 */ 96 if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) { 97 pr_debug("%s: Packet Send ACK on channel %d\n", 98 sc_adapter[card]->devicename, 99 rcvmsg.phy_link_no); 100 sc_adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++; 101 continue; 102 } 103 104 /* 105 * Handle a connection message 106 */ 107 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) 108 { 109 unsigned int callid; 110 setup_parm setup; 111 pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n", 112 sc_adapter[card]->devicename, 113 rcvmsg.phy_link_no, 114 rcvmsg.rsp_status, 115 rcvmsg.msg_data.byte_array[2]); 116 117 memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int)); 118 if(callid>=0x8000 && callid<=0xFFFF) 119 { 120 pr_debug("%s: Got Dial-Out Rsp\n", 121 sc_adapter[card]->devicename); 122 indicate_status(card, ISDN_STAT_DCONN, 123 (unsigned long)rcvmsg.phy_link_no-1,NULL); 124 125 } 126 else if(callid>=0x0000 && callid<=0x7FFF) 127 { 128 pr_debug("%s: Got Incoming Call\n", 129 sc_adapter[card]->devicename); 130 strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4])); 131 strcpy(setup.eazmsn, 132 sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn); 133 setup.si1 = 7; 134 setup.si2 = 0; 135 setup.plan = 0; 136 setup.screen = 0; 137 138 indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup); 139 indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL); 140 } 141 continue; 142 } 143 144 /* 145 * Handle a disconnection message 146 */ 147 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) 148 { 149 pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n", 150 sc_adapter[card]->devicename, 151 rcvmsg.phy_link_no, 152 rcvmsg.rsp_status, 153 rcvmsg.msg_data.byte_array[2]); 154 155 indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); 156 indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); 157 continue; 158 159 } 160 161 /* 162 * Handle a startProc engine up message 163 */ 164 if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) { 165 pr_debug("%s: Received EngineUp message\n", 166 sc_adapter[card]->devicename); 167 sc_adapter[card]->EngineUp = 1; 168 sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL); 169 sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL); 170 init_timer(&sc_adapter[card]->stat_timer); 171 sc_adapter[card]->stat_timer.function = check_phystat; 172 sc_adapter[card]->stat_timer.data = card; 173 sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME; 174 add_timer(&sc_adapter[card]->stat_timer); 175 continue; 176 } 177 178 /* 179 * Start proc response 180 */ 181 if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) { 182 pr_debug("%s: StartProc Response Status %d\n", 183 sc_adapter[card]->devicename, 184 rcvmsg.rsp_status); 185 continue; 186 } 187 188 /* 189 * Handle a GetMyNumber Rsp 190 */ 191 if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){ 192 strcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn,rcvmsg.msg_data.byte_array); 193 continue; 194 } 195 196 /* 197 * PhyStatus response 198 */ 199 if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) { 200 unsigned int b1stat, b2stat; 201 202 /* 203 * Covert the message data to the adapter->phystat code 204 */ 205 b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0]; 206 b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1]; 207 208 sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */ 209 pr_debug("%s: PhyStat is 0x%2x\n", 210 sc_adapter[card]->devicename, 211 sc_adapter[card]->nphystat); 212 continue; 213 } 214 215 216 /* 217 * Handle a GetFramFormat 218 */ 219 if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) { 220 if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) { 221 unsigned int proto = HDLC_PROTO; 222 /* 223 * Set board format to HDLC if it wasn't already 224 */ 225 pr_debug("%s: current frame format: 0x%x, will change to HDLC\n", 226 sc_adapter[card]->devicename, 227 rcvmsg.msg_data.byte_array[0]); 228 sendmessage(card, CEPID, ceReqTypeCall, 229 ceReqClass0, 230 ceReqCallSetFrameFormat, 231 (unsigned char) channel +1, 232 1,&proto); 233 } 234 continue; 235 } 236 237 /* 238 * Hmm... 239 */ 240 pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n", 241 sc_adapter[card]->devicename, 242 rcvmsg.type, rcvmsg.class, rcvmsg.code, 243 rcvmsg.phy_link_no); 244 245 } /* while */ 246 247 pr_debug("%s: Exiting Interrupt Handler\n", 248 sc_adapter[card]->devicename); 249 return IRQ_HANDLED; 250} 251