1 /* $Id: diddfunc.c,v 1.14.6.2 2004/08/28 20:03:53 armin Exp $
2 *
3 * DIDD Interface module for Eicon active cards.
4 *
5 * Functions are in dadapter.c
6 *
7 * Copyright 2002-2003 by Armin Schindler (mac@melware.de)
8 * Copyright 2002-2003 Cytronics & Melware (info@melware.de)
9 *
10 * This software may be used and distributed according to the terms
11 * of the GNU General Public License, incorporated herein by reference.
12 */
13
14 #include "platform.h"
15 #include "di_defs.h"
16 #include "dadapter.h"
17 #include "divasync.h"
18
19 #define DBG_MINIMUM (DL_LOG + DL_FTL + DL_ERR)
20 #define DBG_DEFAULT (DBG_MINIMUM + DL_XLOG + DL_REG)
21
22
23 extern void DIVA_DIDD_Read(void *, int);
24 extern char *DRIVERRELEASE_DIDD;
25 static dword notify_handle;
26 static DESCRIPTOR _DAdapter;
27
28 /*
29 * didd callback function
30 */
didd_callback(void * context,DESCRIPTOR * adapter,int removal)31 static void *didd_callback(void *context, DESCRIPTOR *adapter,
32 int removal)
33 {
34 if (adapter->type == IDI_DADAPTER) {
35 DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."))
36 return (NULL);
37 } else if (adapter->type == IDI_DIMAINT) {
38 if (removal) {
39 DbgDeregister();
40 } else {
41 DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
42 }
43 }
44 return (NULL);
45 }
46
47 /*
48 * connect to didd
49 */
connect_didd(void)50 static int __init connect_didd(void)
51 {
52 int x = 0;
53 int dadapter = 0;
54 IDI_SYNC_REQ req;
55 DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
56
57 DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
58
59 for (x = 0; x < MAX_DESCRIPTORS; x++) {
60 if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
61 dadapter = 1;
62 memcpy(&_DAdapter, &DIDD_Table[x], sizeof(_DAdapter));
63 req.didd_notify.e.Req = 0;
64 req.didd_notify.e.Rc =
65 IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
66 req.didd_notify.info.callback = (void *)didd_callback;
67 req.didd_notify.info.context = NULL;
68 _DAdapter.request((ENTITY *)&req);
69 if (req.didd_notify.e.Rc != 0xff)
70 return (0);
71 notify_handle = req.didd_notify.info.handle;
72 } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
73 DbgRegister("DIDD", DRIVERRELEASE_DIDD, DBG_DEFAULT);
74 }
75 }
76 return (dadapter);
77 }
78
79 /*
80 * disconnect from didd
81 */
disconnect_didd(void)82 static void __exit disconnect_didd(void)
83 {
84 IDI_SYNC_REQ req;
85
86 req.didd_notify.e.Req = 0;
87 req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
88 req.didd_notify.info.handle = notify_handle;
89 _DAdapter.request((ENTITY *)&req);
90 }
91
92 /*
93 * init
94 */
diddfunc_init(void)95 int __init diddfunc_init(void)
96 {
97 diva_didd_load_time_init();
98
99 if (!connect_didd()) {
100 DBG_ERR(("init: failed to connect to DIDD."))
101 diva_didd_load_time_finit();
102 return (0);
103 }
104 return (1);
105 }
106
107 /*
108 * finit
109 */
diddfunc_finit(void)110 void __exit diddfunc_finit(void)
111 {
112 DbgDeregister();
113 disconnect_didd();
114 diva_didd_load_time_finit();
115 }
116