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path: root/drivers/isdn/sc/interrupt.c
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Diffstat (limited to 'drivers/isdn/sc/interrupt.c')
-rw-r--r--drivers/isdn/sc/interrupt.c260
1 files changed, 260 insertions, 0 deletions
diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c
new file mode 100644
index 00000000000..e5e164aca7f
--- /dev/null
+++ b/drivers/isdn/sc/interrupt.c
@@ -0,0 +1,260 @@
+/* $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>
+
+extern int indicate_status(int, int, ulong, char *);
+extern void check_phystat(unsigned long);
+extern int receivemessage(int, RspMessage *);
+extern int sendmessage(int, unsigned int, unsigned int, unsigned int,
+ unsigned int, unsigned int, unsigned int, unsigned int *);
+extern void rcvpkt(int, RspMessage *);
+
+extern int cinst;
+extern board *sc_adapter[];
+
+int get_card_from_irq(int irq)
+{
+ int i;
+
+ for(i = 0 ; i < cinst ; i++) {
+ if(sc_adapter[i]->interrupt == irq)
+ return i;
+ }
+ return -1;
+}
+
+/*
+ *
+ */
+irqreturn_t interrupt_handler(int interrupt, void *cardptr, struct pt_regs *regs)
+{
+
+ RspMessage rcvmsg;
+ int channel;
+ int card;
+
+ card = get_card_from_irq(interrupt);
+
+ 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%x\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)
+ {
+ pr_debug("%s: Got Incoming Call\n",
+ sc_adapter[card]->devicename);
+ strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4]));
+ strcpy(setup.eazmsn,
+ sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn);
+ 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)){
+ strcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn,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;
+}
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