drivers/isdn/sc/interrupt.c

   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  */
  27 irqreturn_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                                 pr_debug("%s: Got Incoming Call\n",
 116                                                 sc_adapter[card]->devicename);
 117                                 strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4]));
 118                                 strcpy(setup.eazmsn,
 119                                         sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn);
 120                                 setup.si1 = 7;
 121                                 setup.si2 = 0;
 122                                 setup.plan = 0;
 123                                 setup.screen = 0;
 124
 125                                 indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup);
 126                                 indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL);
 127                         }
 128                         continue;
 129                 }
 130
 131                 /*
 132                  * Handle a disconnection message
 133                  */
 134                 if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect))
 135                 {
 136                         pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n",
 137                                                 sc_adapter[card]->devicename,
 138                                                 rcvmsg.phy_link_no,
 139                                                 rcvmsg.rsp_status,
 140                                                 rcvmsg.msg_data.byte_array[2]);
 141
 142                         indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
 143                         indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
 144                         continue;
 145
 146                 }
 147
 148                 /*
 149                  * Handle a startProc engine up message
 150                  */
 151                 if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) {
 152                         pr_debug("%s: Received EngineUp message\n",
 153                                 sc_adapter[card]->devicename);
 154                         sc_adapter[card]->EngineUp = 1;
 155                         sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL);
 156                         sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL);
 157                         init_timer(&sc_adapter[card]->stat_timer);
 158                         sc_adapter[card]->stat_timer.function = check_phystat;
 159                         sc_adapter[card]->stat_timer.data = card;
 160                         sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME;
 161                         add_timer(&sc_adapter[card]->stat_timer);
 162                         continue;
 163                 }
 164
 165                 /*
 166                  * Start proc response
 167                  */
 168                 if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) {
 169                         pr_debug("%s: StartProc Response Status %d\n",
 170                                 sc_adapter[card]->devicename,
 171                                 rcvmsg.rsp_status);
 172                         continue;
 173                 }
 174
 175                 /*
 176                  * Handle a GetMyNumber Rsp
 177                  */
 178                 if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){
 179                         strcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn,rcvmsg.msg_data.byte_array);
 180                         continue;
 181                 }
 182
 183                 /*
 184                  * PhyStatus response
 185                  */
 186                 if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) {
 187                         unsigned int b1stat, b2stat;
 188
 189                         /*
 190                          * Covert the message data to the adapter->phystat code
 191                          */
 192                         b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0];
 193                         b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1];
 194
 195                         sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */
 196                         pr_debug("%s: PhyStat is 0x%2x\n",
 197                                 sc_adapter[card]->devicename,
 198                                 sc_adapter[card]->nphystat);
 199                         continue;
 200                 }
 201
 202
 203                 /*
 204                  * Handle a GetFramFormat
 205                  */
 206                 if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) {
 207                         if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) {
 208                                 unsigned int proto = HDLC_PROTO;
 209                                 /*
 210                                  * Set board format to HDLC if it wasn't already
 211                                  */
 212                                 pr_debug("%s: current frame format: 0x%x, will change to HDLC\n",
 213                                                 sc_adapter[card]->devicename,
 214                                         rcvmsg.msg_data.byte_array[0]);
 215                                 sendmessage(card, CEPID, ceReqTypeCall,
 216                                                 ceReqClass0,
 217                                                 ceReqCallSetFrameFormat,
 218                                                 (unsigned char) channel +1,
 219                                                 1,&proto);
 220                                 }
 221                         continue;
 222                 }
 223
 224                 /*
 225                  * Hmm...
 226                  */
 227                 pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n",
 228                         sc_adapter[card]->devicename,
 229                         rcvmsg.type, rcvmsg.class, rcvmsg.code,
 230                         rcvmsg.phy_link_no);
 231
 232         }       /* while */
 233
 234         pr_debug("%s: Exiting Interrupt Handler\n",
 235                         sc_adapter[card]->devicename);
 236         return IRQ_HANDLED;
 237 }