tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 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}