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
23extern void DIVA_DIDD_Read(void *, int);
24extern char *DRIVERRELEASE_DIDD;
25static dword notify_handle;
26static DESCRIPTOR _DAdapter;
27
28/*
29 * didd callback function
30 */
31static 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 */
50static 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 */
82static 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 */
95int __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 */
110void __exit diddfunc_finit(void)
111{
112	DbgDeregister();
113	disconnect_didd();
114	diva_didd_load_time_finit();
115}
116