1/* $Id: interrupt.c,v 1.4.8.3 2001/09/23 22:24:59 kai 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 24/* 25 * 26 */ 27irqreturn_t interrupt_handler(int dummy, void *card_inst) 28{ 29 30 RspMessage rcvmsg; 31 int channel; 32 int card = (int)(unsigned long) card_inst; 33 34 if (!IS_VALID_CARD(card)) { 35 pr_debug("Invalid param: %d is not a valid card id\n", card); 36 return IRQ_NONE; 37 } 38 39 pr_debug("%s: Entered Interrupt handler\n", 40 sc_adapter[card]->devicename); 41 42 /* 43 * Pull all of the waiting messages off the response queue 44 */ 45 while (!receivemessage(card, &rcvmsg)) { 46 /* 47 * Push the message to the adapter structure for 48 * send_and_receive to snoop 49 */ 50 if (sc_adapter[card]->want_async_messages) 51 memcpy(&(sc_adapter[card]->async_msg), 52 &rcvmsg, sizeof(RspMessage)); 53 54 channel = (unsigned int) rcvmsg.phy_link_no; 55 56 /* 57 * Trap Invalid request messages 58 */ 59 if (IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) { 60 pr_debug("%s: Invalid request Message, rsp_status = %d\n", 61 sc_adapter[card]->devicename, 62 rcvmsg.rsp_status); 63 break; 64 } 65 66 /* 67 * Check for a linkRead message 68 */ 69 if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read)) 70 { 71 pr_debug("%s: Received packet 0x%x bytes long at 0x%lx\n", 72 sc_adapter[card]->devicename, 73 rcvmsg.msg_data.response.msg_len, 74 rcvmsg.msg_data.response.buff_offset); 75 rcvpkt(card, &rcvmsg); 76 continue; 77 78 } 79 80 /* 81 * Handle a write acknoledgement 82 */ 83 if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) { 84 pr_debug("%s: Packet Send ACK on channel %d\n", 85 sc_adapter[card]->devicename, 86 rcvmsg.phy_link_no); 87 sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].free_sendbufs++; 88 continue; 89 } 90 91 /* 92 * Handle a connection message 93 */ 94 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) 95 { 96 unsigned int callid; 97 setup_parm setup; 98 pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n", 99 sc_adapter[card]->devicename, 100 rcvmsg.phy_link_no, 101 rcvmsg.rsp_status, 102 rcvmsg.msg_data.byte_array[2]); 103 104 memcpy(&callid, rcvmsg.msg_data.byte_array, sizeof(int)); 105 if (callid >= 0x8000 && callid <= 0xFFFF) 106 { 107 pr_debug("%s: Got Dial-Out Rsp\n", 108 sc_adapter[card]->devicename); 109 indicate_status(card, ISDN_STAT_DCONN, 110 (unsigned long)rcvmsg.phy_link_no - 1, NULL); 111 112 } 113 else if (callid >= 0x0000 && callid <= 0x7FFF) 114 { 115 int len; 116 117 pr_debug("%s: Got Incoming Call\n", 118 sc_adapter[card]->devicename); 119 len = strlcpy(setup.phone, &(rcvmsg.msg_data.byte_array[4]), 120 sizeof(setup.phone)); 121 if (len >= sizeof(setup.phone)) 122 continue; 123 len = strlcpy(setup.eazmsn, 124 sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn, 125 sizeof(setup.eazmsn)); 126 if (len >= sizeof(setup.eazmsn)) 127 continue; 128 setup.si1 = 7; 129 setup.si2 = 0; 130 setup.plan = 0; 131 setup.screen = 0; 132 133 indicate_status(card, ISDN_STAT_ICALL, (unsigned long)rcvmsg.phy_link_no - 1, (char *)&setup); 134 indicate_status(card, ISDN_STAT_DCONN, (unsigned long)rcvmsg.phy_link_no - 1, NULL); 135 } 136 continue; 137 } 138 139 /* 140 * Handle a disconnection message 141 */ 142 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) 143 { 144 pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n", 145 sc_adapter[card]->devicename, 146 rcvmsg.phy_link_no, 147 rcvmsg.rsp_status, 148 rcvmsg.msg_data.byte_array[2]); 149 150 indicate_status(card, ISDN_STAT_BHUP, (unsigned long)rcvmsg.phy_link_no - 1, NULL); 151 indicate_status(card, ISDN_STAT_DHUP, (unsigned long)rcvmsg.phy_link_no - 1, NULL); 152 continue; 153 154 } 155 156 /* 157 * Handle a startProc engine up message 158 */ 159 if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) { 160 pr_debug("%s: Received EngineUp message\n", 161 sc_adapter[card]->devicename); 162 sc_adapter[card]->EngineUp = 1; 163 sendmessage(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetMyNumber, 1, 0, NULL); 164 sendmessage(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetMyNumber, 2, 0, NULL); 165 init_timer(&sc_adapter[card]->stat_timer); 166 sc_adapter[card]->stat_timer.function = check_phystat; 167 sc_adapter[card]->stat_timer.data = card; 168 sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME; 169 add_timer(&sc_adapter[card]->stat_timer); 170 continue; 171 } 172 173 /* 174 * Start proc response 175 */ 176 if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) { 177 pr_debug("%s: StartProc Response Status %d\n", 178 sc_adapter[card]->devicename, 179 rcvmsg.rsp_status); 180 continue; 181 } 182 183 /* 184 * Handle a GetMyNumber Rsp 185 */ 186 if (IS_CE_MESSAGE(rcvmsg, Call, 0, GetMyNumber)) { 187 strlcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn, 188 rcvmsg.msg_data.byte_array, 189 sizeof(rcvmsg.msg_data.byte_array)); 190 continue; 191 } 192 193 /* 194 * PhyStatus response 195 */ 196 if (IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) { 197 unsigned int b1stat, b2stat; 198 199 /* 200 * Covert the message data to the adapter->phystat code 201 */ 202 b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0]; 203 b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1]; 204 205 sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */ 206 pr_debug("%s: PhyStat is 0x%2x\n", 207 sc_adapter[card]->devicename, 208 sc_adapter[card]->nphystat); 209 continue; 210 } 211 212 213 /* 214 * Handle a GetFramFormat 215 */ 216 if (IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) { 217 if (rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) { 218 unsigned int proto = HDLC_PROTO; 219 /* 220 * Set board format to HDLC if it wasn't already 221 */ 222 pr_debug("%s: current frame format: 0x%x, will change to HDLC\n", 223 sc_adapter[card]->devicename, 224 rcvmsg.msg_data.byte_array[0]); 225 sendmessage(card, CEPID, ceReqTypeCall, 226 ceReqClass0, 227 ceReqCallSetFrameFormat, 228 (unsigned char)channel + 1, 229 1, &proto); 230 } 231 continue; 232 } 233 234 /* 235 * Hmm... 236 */ 237 pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n", 238 sc_adapter[card]->devicename, 239 rcvmsg.type, rcvmsg.class, rcvmsg.code, 240 rcvmsg.phy_link_no); 241 242 } /* while */ 243 244 pr_debug("%s: Exiting Interrupt Handler\n", 245 sc_adapter[card]->devicename); 246 return IRQ_HANDLED; 247} 248