1/* $Id: interrupt.c,v 1.1.1.1 2008/10/15 03:26:34 james26_jang 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#define __NO_VERSION__ 19#include "includes.h" 20#include "hardware.h" 21#include "message.h" 22#include "card.h" 23 24extern int indicate_status(int, int, ulong, char *); 25extern void check_phystat(unsigned long); 26extern int receivemessage(int, RspMessage *); 27extern int sendmessage(int, unsigned int, unsigned int, unsigned int, 28 unsigned int, unsigned int, unsigned int, unsigned int *); 29extern void rcvpkt(int, RspMessage *); 30 31extern int cinst; 32extern board *adapter[]; 33 34int get_card_from_irq(int irq) 35{ 36 int i; 37 38 for(i = 0 ; i < cinst ; i++) { 39 if(adapter[i]->interrupt == irq) 40 return i; 41 } 42 return -1; 43} 44 45/* 46 * 47 */ 48void interrupt_handler(int interrupt, void * cardptr, struct pt_regs *regs ) { 49 50 RspMessage rcvmsg; 51 int channel; 52 int card; 53 54 card = get_card_from_irq(interrupt); 55 56 if(!IS_VALID_CARD(card)) { 57 pr_debug("Invalid param: %d is not a valid card id\n", card); 58 return; 59 } 60 61 pr_debug("%s: Entered Interrupt handler\n", adapter[card]->devicename); 62 63 /* 64 * Pull all of the waiting messages off the response queue 65 */ 66 while (!receivemessage(card, &rcvmsg)) { 67 /* 68 * Push the message to the adapter structure for 69 * send_and_receive to snoop 70 */ 71 if(adapter[card]->want_async_messages) 72 memcpy(&(adapter[card]->async_msg), &rcvmsg, sizeof(RspMessage)); 73 74 channel = (unsigned int) rcvmsg.phy_link_no; 75 76 /* 77 * Trap Invalid request messages 78 */ 79 if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) { 80 pr_debug("%s: Invalid request Message, rsp_status = %d\n", 81 adapter[card]->devicename, rcvmsg.rsp_status); 82 break; 83 } 84 85 /* 86 * Check for a linkRead message 87 */ 88 if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read)) 89 { 90 pr_debug("%s: Received packet 0x%x bytes long at 0x%x\n", 91 adapter[card]->devicename, 92 rcvmsg.msg_data.response.msg_len, 93 rcvmsg.msg_data.response.buff_offset); 94 rcvpkt(card, &rcvmsg); 95 continue; 96 97 } 98 99 /* 100 * Handle a write acknoledgement 101 */ 102 if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) { 103 pr_debug("%s: Packet Send ACK on channel %d\n", adapter[card]->devicename, 104 rcvmsg.phy_link_no); 105 adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++; 106 continue; 107 } 108 109 /* 110 * Handle a connection message 111 */ 112 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) 113 { 114 unsigned int callid; 115 setup_parm setup; 116 pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n", 117 adapter[card]->devicename, 118 rcvmsg.phy_link_no, 119 rcvmsg.rsp_status, 120 rcvmsg.msg_data.byte_array[2]); 121 122 memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int)); 123 if(callid>=0x8000 && callid<=0xFFFF) 124 { 125 pr_debug("%s: Got Dial-Out Rsp\n", adapter[card]->devicename); 126 indicate_status(card, ISDN_STAT_DCONN, 127 (unsigned long)rcvmsg.phy_link_no-1,NULL); 128 129 } 130 else if(callid>=0x0000 && callid<=0x7FFF) 131 { 132 pr_debug("%s: Got Incoming Call\n", adapter[card]->devicename); 133 strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4])); 134 strcpy(setup.eazmsn,adapter[card]->channel[rcvmsg.phy_link_no-1].dn); 135 setup.si1 = 7; 136 setup.si2 = 0; 137 setup.plan = 0; 138 setup.screen = 0; 139 140 indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup); 141 indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL); 142 } 143 continue; 144 } 145 146 /* 147 * Handle a disconnection message 148 */ 149 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) 150 { 151 pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n", 152 adapter[card]->devicename, 153 rcvmsg.phy_link_no, 154 rcvmsg.rsp_status, 155 rcvmsg.msg_data.byte_array[2]); 156 157 indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); 158 indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); 159 continue; 160 161 } 162 163 /* 164 * Handle a startProc engine up message 165 */ 166 if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) { 167 pr_debug("%s: Received EngineUp message\n", adapter[card]->devicename); 168 adapter[card]->EngineUp = 1; 169 sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL); 170 sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL); 171 init_timer(&adapter[card]->stat_timer); 172 adapter[card]->stat_timer.function = check_phystat; 173 adapter[card]->stat_timer.data = card; 174 adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME; 175 add_timer(&adapter[card]->stat_timer); 176 continue; 177 } 178 179 /* 180 * Start proc response 181 */ 182 if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) { 183 pr_debug("%s: StartProc Response Status %d\n", 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(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 adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */ 209 pr_debug("%s: PhyStat is 0x%2x\n", adapter[card]->devicename, 210 adapter[card]->nphystat); 211 continue; 212 } 213 214 215 /* 216 * Handle a GetFramFormat 217 */ 218 if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) { 219 if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) { 220 unsigned int proto = HDLC_PROTO; 221 /* 222 * Set board format to HDLC if it wasn't already 223 */ 224 pr_debug("%s: current frame format: 0x%x, will change to HDLC\n", 225 adapter[card]->devicename, 226 rcvmsg.msg_data.byte_array[0]); 227 sendmessage(card, CEPID, ceReqTypeCall, 228 ceReqClass0, 229 ceReqCallSetFrameFormat, 230 (unsigned char) channel +1, 231 1,&proto); 232 } 233 continue; 234 } 235 236 /* 237 * Hmm... 238 */ 239 pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n", 240 adapter[card]->devicename, rcvmsg.type, rcvmsg.class, rcvmsg.code, 241 rcvmsg.phy_link_no); 242 243 } /* while */ 244 245 pr_debug("%s: Exiting Interrupt Handler\n", adapter[card]->devicename); 246} 247