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1da177e4 LT |
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 | extern int indicate_status(int, int, ulong, char *); | |
25 | extern void check_phystat(unsigned long); | |
26 | extern int receivemessage(int, RspMessage *); | |
27 | extern int sendmessage(int, unsigned int, unsigned int, unsigned int, | |
28 | unsigned int, unsigned int, unsigned int, unsigned int *); | |
29 | extern void rcvpkt(int, RspMessage *); | |
30 | ||
31 | extern int cinst; | |
32 | extern board *sc_adapter[]; | |
33 | ||
34 | int get_card_from_irq(int irq) | |
35 | { | |
36 | int i; | |
37 | ||
38 | for(i = 0 ; i < cinst ; i++) { | |
39 | if(sc_adapter[i]->interrupt == irq) | |
40 | return i; | |
41 | } | |
42 | return -1; | |
43 | } | |
44 | ||
45 | /* | |
46 | * | |
47 | */ | |
48 | irqreturn_t interrupt_handler(int interrupt, void *cardptr, struct pt_regs *regs) | |
49 | { | |
50 | ||
51 | RspMessage rcvmsg; | |
52 | int channel; | |
53 | int card; | |
54 | ||
55 | card = get_card_from_irq(interrupt); | |
56 | ||
57 | if(!IS_VALID_CARD(card)) { | |
58 | pr_debug("Invalid param: %d is not a valid card id\n", card); | |
59 | return IRQ_NONE; | |
60 | } | |
61 | ||
62 | pr_debug("%s: Entered Interrupt handler\n", | |
63 | sc_adapter[card]->devicename); | |
64 | ||
65 | /* | |
66 | * Pull all of the waiting messages off the response queue | |
67 | */ | |
68 | while (!receivemessage(card, &rcvmsg)) { | |
69 | /* | |
70 | * Push the message to the adapter structure for | |
71 | * send_and_receive to snoop | |
72 | */ | |
73 | if(sc_adapter[card]->want_async_messages) | |
74 | memcpy(&(sc_adapter[card]->async_msg), | |
75 | &rcvmsg, sizeof(RspMessage)); | |
76 | ||
77 | channel = (unsigned int) rcvmsg.phy_link_no; | |
78 | ||
79 | /* | |
80 | * Trap Invalid request messages | |
81 | */ | |
82 | if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) { | |
83 | pr_debug("%s: Invalid request Message, rsp_status = %d\n", | |
84 | sc_adapter[card]->devicename, | |
85 | rcvmsg.rsp_status); | |
86 | break; | |
87 | } | |
88 | ||
89 | /* | |
90 | * Check for a linkRead message | |
91 | */ | |
92 | if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read)) | |
93 | { | |
94 | pr_debug("%s: Received packet 0x%x bytes long at 0x%x\n", | |
95 | sc_adapter[card]->devicename, | |
96 | rcvmsg.msg_data.response.msg_len, | |
97 | rcvmsg.msg_data.response.buff_offset); | |
98 | rcvpkt(card, &rcvmsg); | |
99 | continue; | |
100 | ||
101 | } | |
102 | ||
103 | /* | |
104 | * Handle a write acknoledgement | |
105 | */ | |
106 | if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) { | |
107 | pr_debug("%s: Packet Send ACK on channel %d\n", | |
108 | sc_adapter[card]->devicename, | |
109 | rcvmsg.phy_link_no); | |
110 | sc_adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++; | |
111 | continue; | |
112 | } | |
113 | ||
114 | /* | |
115 | * Handle a connection message | |
116 | */ | |
117 | if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) | |
118 | { | |
119 | unsigned int callid; | |
120 | setup_parm setup; | |
121 | pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n", | |
122 | sc_adapter[card]->devicename, | |
123 | rcvmsg.phy_link_no, | |
124 | rcvmsg.rsp_status, | |
125 | rcvmsg.msg_data.byte_array[2]); | |
126 | ||
127 | memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int)); | |
128 | if(callid>=0x8000 && callid<=0xFFFF) | |
129 | { | |
130 | pr_debug("%s: Got Dial-Out Rsp\n", | |
131 | sc_adapter[card]->devicename); | |
132 | indicate_status(card, ISDN_STAT_DCONN, | |
133 | (unsigned long)rcvmsg.phy_link_no-1,NULL); | |
134 | ||
135 | } | |
136 | else if(callid>=0x0000 && callid<=0x7FFF) | |
137 | { | |
138 | pr_debug("%s: Got Incoming Call\n", | |
139 | sc_adapter[card]->devicename); | |
140 | strcpy(setup.phone,&(rcvmsg.msg_data.byte_array[4])); | |
141 | strcpy(setup.eazmsn, | |
142 | sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn); | |
143 | setup.si1 = 7; | |
144 | setup.si2 = 0; | |
145 | setup.plan = 0; | |
146 | setup.screen = 0; | |
147 | ||
148 | indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup); | |
149 | indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL); | |
150 | } | |
151 | continue; | |
152 | } | |
153 | ||
154 | /* | |
155 | * Handle a disconnection message | |
156 | */ | |
157 | if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) | |
158 | { | |
159 | pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n", | |
160 | sc_adapter[card]->devicename, | |
161 | rcvmsg.phy_link_no, | |
162 | rcvmsg.rsp_status, | |
163 | rcvmsg.msg_data.byte_array[2]); | |
164 | ||
165 | indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); | |
166 | indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL); | |
167 | continue; | |
168 | ||
169 | } | |
170 | ||
171 | /* | |
172 | * Handle a startProc engine up message | |
173 | */ | |
174 | if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) { | |
175 | pr_debug("%s: Received EngineUp message\n", | |
176 | sc_adapter[card]->devicename); | |
177 | sc_adapter[card]->EngineUp = 1; | |
178 | sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL); | |
179 | sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL); | |
180 | init_timer(&sc_adapter[card]->stat_timer); | |
181 | sc_adapter[card]->stat_timer.function = check_phystat; | |
182 | sc_adapter[card]->stat_timer.data = card; | |
183 | sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME; | |
184 | add_timer(&sc_adapter[card]->stat_timer); | |
185 | continue; | |
186 | } | |
187 | ||
188 | /* | |
189 | * Start proc response | |
190 | */ | |
191 | if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) { | |
192 | pr_debug("%s: StartProc Response Status %d\n", | |
193 | sc_adapter[card]->devicename, | |
194 | rcvmsg.rsp_status); | |
195 | continue; | |
196 | } | |
197 | ||
198 | /* | |
199 | * Handle a GetMyNumber Rsp | |
200 | */ | |
201 | if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){ | |
202 | strcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no-1].dn,rcvmsg.msg_data.byte_array); | |
203 | continue; | |
204 | } | |
205 | ||
206 | /* | |
207 | * PhyStatus response | |
208 | */ | |
209 | if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) { | |
210 | unsigned int b1stat, b2stat; | |
211 | ||
212 | /* | |
213 | * Covert the message data to the adapter->phystat code | |
214 | */ | |
215 | b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0]; | |
216 | b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1]; | |
217 | ||
218 | sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */ | |
219 | pr_debug("%s: PhyStat is 0x%2x\n", | |
220 | sc_adapter[card]->devicename, | |
221 | sc_adapter[card]->nphystat); | |
222 | continue; | |
223 | } | |
224 | ||
225 | ||
226 | /* | |
227 | * Handle a GetFramFormat | |
228 | */ | |
229 | if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) { | |
230 | if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) { | |
231 | unsigned int proto = HDLC_PROTO; | |
232 | /* | |
233 | * Set board format to HDLC if it wasn't already | |
234 | */ | |
235 | pr_debug("%s: current frame format: 0x%x, will change to HDLC\n", | |
236 | sc_adapter[card]->devicename, | |
237 | rcvmsg.msg_data.byte_array[0]); | |
238 | sendmessage(card, CEPID, ceReqTypeCall, | |
239 | ceReqClass0, | |
240 | ceReqCallSetFrameFormat, | |
241 | (unsigned char) channel +1, | |
242 | 1,&proto); | |
243 | } | |
244 | continue; | |
245 | } | |
246 | ||
247 | /* | |
248 | * Hmm... | |
249 | */ | |
250 | pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n", | |
251 | sc_adapter[card]->devicename, | |
252 | rcvmsg.type, rcvmsg.class, rcvmsg.code, | |
253 | rcvmsg.phy_link_no); | |
254 | ||
255 | } /* while */ | |
256 | ||
257 | pr_debug("%s: Exiting Interrupt Handler\n", | |
258 | sc_adapter[card]->devicename); | |
259 | return IRQ_HANDLED; | |
260 | } |