diff options
Diffstat (limited to 'drivers/isdn/sc/interrupt.c')
-rw-r--r-- | drivers/isdn/sc/interrupt.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c new file mode 100644 index 000000000..e80cc76bc --- /dev/null +++ b/drivers/isdn/sc/interrupt.c @@ -0,0 +1,247 @@ +/* $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 <linux/interrupt.h> + +/* + * + */ +irqreturn_t interrupt_handler(int dummy, void *card_inst) +{ + + RspMessage rcvmsg; + int channel; + int card = (int)(unsigned long) card_inst; + + 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%lx\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) + { + int len; + + pr_debug("%s: Got Incoming Call\n", + sc_adapter[card]->devicename); + len = strlcpy(setup.phone, &(rcvmsg.msg_data.byte_array[4]), + sizeof(setup.phone)); + if (len >= sizeof(setup.phone)) + continue; + len = strlcpy(setup.eazmsn, + sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn, + sizeof(setup.eazmsn)); + if (len >= sizeof(setup.eazmsn)) + continue; + 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)) { + strlcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn, + rcvmsg.msg_data.byte_array, + sizeof(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; +} |