GNU Linux-libre 4.9.311-gnu1
[releases.git] / drivers / isdn / hardware / eicon / divasfunc.c
1 /* $Id: divasfunc.c,v 1.23.4.2 2004/08/28 20:03:53 armin Exp $
2  *
3  * Low level driver for Eicon DIVA Server ISDN cards.
4  *
5  * Copyright 2000-2003 by Armin Schindler (mac@melware.de)
6  * Copyright 2000-2003 Cytronics & Melware (info@melware.de)
7  *
8  * This software may be used and distributed according to the terms
9  * of the GNU General Public License, incorporated herein by reference.
10  */
11
12 #include "platform.h"
13 #include "di_defs.h"
14 #include "pc.h"
15 #include "di.h"
16 #include "io.h"
17 #include "divasync.h"
18 #include "diva.h"
19 #include "xdi_vers.h"
20
21 #define DBG_MINIMUM  (DL_LOG + DL_FTL + DL_ERR)
22 #define DBG_DEFAULT  (DBG_MINIMUM + DL_XLOG + DL_REG)
23
24 static int debugmask;
25
26 extern void DIVA_DIDD_Read(void *, int);
27
28 extern PISDN_ADAPTER IoAdapters[MAX_ADAPTER];
29
30 extern char *DRIVERRELEASE_DIVAS;
31
32 static dword notify_handle;
33 static DESCRIPTOR DAdapter;
34 static DESCRIPTOR MAdapter;
35
36 /* --------------------------------------------------------------------------
37    MAINT driver connector section
38    -------------------------------------------------------------------------- */
39 static void no_printf(unsigned char *x, ...)
40 {
41         /* dummy debug function */
42 }
43
44 #include "debuglib.c"
45
46 /*
47  * get the adapters serial number
48  */
49 void diva_get_vserial_number(PISDN_ADAPTER IoAdapter, char *buf)
50 {
51         int contr = 0;
52
53         if ((contr = ((IoAdapter->serialNo & 0xff000000) >> 24))) {
54                 sprintf(buf, "%d-%d",
55                         IoAdapter->serialNo & 0x00ffffff, contr + 1);
56         } else {
57                 sprintf(buf, "%d", IoAdapter->serialNo);
58         }
59 }
60
61 /*
62  * register a new adapter
63  */
64 void diva_xdi_didd_register_adapter(int card)
65 {
66         DESCRIPTOR d;
67         IDI_SYNC_REQ req;
68
69         if (card && ((card - 1) < MAX_ADAPTER) &&
70             IoAdapters[card - 1] && Requests[card - 1]) {
71                 d.type = IoAdapters[card - 1]->Properties.DescType;
72                 d.request = Requests[card - 1];
73                 d.channels = IoAdapters[card - 1]->Properties.Channels;
74                 d.features = IoAdapters[card - 1]->Properties.Features;
75                 DBG_TRC(("DIDD register A(%d) channels=%d", card,
76                          d.channels))
77                         /* workaround for different Name in structure */
78                         strlcpy(IoAdapters[card - 1]->Name,
79                                 IoAdapters[card - 1]->Properties.Name,
80                                 sizeof(IoAdapters[card - 1]->Name));
81                 req.didd_remove_adapter.e.Req = 0;
82                 req.didd_add_adapter.e.Rc = IDI_SYNC_REQ_DIDD_ADD_ADAPTER;
83                 req.didd_add_adapter.info.descriptor = (void *) &d;
84                 DAdapter.request((ENTITY *)&req);
85                 if (req.didd_add_adapter.e.Rc != 0xff) {
86                         DBG_ERR(("DIDD register A(%d) failed !", card))
87                                 }
88                 IoAdapters[card - 1]->os_trap_nfy_Fnc = NULL;
89         }
90 }
91
92 /*
93  * remove an adapter
94  */
95 void diva_xdi_didd_remove_adapter(int card)
96 {
97         IDI_SYNC_REQ req;
98         ADAPTER *a = &IoAdapters[card - 1]->a;
99
100         IoAdapters[card - 1]->os_trap_nfy_Fnc = NULL;
101         DBG_TRC(("DIDD de-register A(%d)", card))
102                 req.didd_remove_adapter.e.Req = 0;
103         req.didd_remove_adapter.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER;
104         req.didd_remove_adapter.info.p_request =
105                 (IDI_CALL) Requests[card - 1];
106         DAdapter.request((ENTITY *)&req);
107         memset(&(a->IdTable), 0x00, 256);
108 }
109
110 /*
111  * start debug
112  */
113 static void start_dbg(void)
114 {
115         DbgRegister("DIVAS", DRIVERRELEASE_DIVAS, (debugmask) ? debugmask : DBG_DEFAULT);
116         DBG_LOG(("DIVA ISDNXDI BUILD (%s[%s])",
117                  DIVA_BUILD, diva_xdi_common_code_build))
118                 }
119
120 /*
121  * stop debug
122  */
123 static void stop_dbg(void)
124 {
125         DbgDeregister();
126         memset(&MAdapter, 0, sizeof(MAdapter));
127         dprintf = no_printf;
128 }
129
130 /*
131  * didd callback function
132  */
133 static void *didd_callback(void *context, DESCRIPTOR *adapter,
134                            int removal)
135 {
136         if (adapter->type == IDI_DADAPTER) {
137                 DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
138                 return (NULL);
139         }
140
141         if (adapter->type == IDI_DIMAINT) {
142                 if (removal) {
143                         stop_dbg();
144                 } else {
145                         memcpy(&MAdapter, adapter, sizeof(MAdapter));
146                         dprintf = (DIVA_DI_PRINTF) MAdapter.request;
147                         start_dbg();
148                 }
149         }
150         return (NULL);
151 }
152
153 /*
154  * connect to didd
155  */
156 static int __init connect_didd(void)
157 {
158         int x = 0;
159         int dadapter = 0;
160         IDI_SYNC_REQ req;
161         DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
162
163         DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
164
165         for (x = 0; x < MAX_DESCRIPTORS; x++) {
166                 if (DIDD_Table[x].type == IDI_DADAPTER) {       /* DADAPTER found */
167                         dadapter = 1;
168                         memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
169                         req.didd_notify.e.Req = 0;
170                         req.didd_notify.e.Rc =
171                                 IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
172                         req.didd_notify.info.callback = (void *)didd_callback;
173                         req.didd_notify.info.context = NULL;
174                         DAdapter.request((ENTITY *)&req);
175                         if (req.didd_notify.e.Rc != 0xff) {
176                                 stop_dbg();
177                                 return (0);
178                         }
179                         notify_handle = req.didd_notify.info.handle;
180                 } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
181                         memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
182                         dprintf = (DIVA_DI_PRINTF) MAdapter.request;
183                         start_dbg();
184                 }
185         }
186
187         if (!dadapter) {
188                 stop_dbg();
189         }
190
191         return (dadapter);
192 }
193
194 /*
195  * disconnect from didd
196  */
197 static void disconnect_didd(void)
198 {
199         IDI_SYNC_REQ req;
200
201         stop_dbg();
202
203         req.didd_notify.e.Req = 0;
204         req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
205         req.didd_notify.info.handle = notify_handle;
206         DAdapter.request((ENTITY *)&req);
207 }
208
209 /*
210  * init
211  */
212 int __init divasfunc_init(int dbgmask)
213 {
214         char *version;
215
216         debugmask = dbgmask;
217
218         if (!connect_didd()) {
219                 DBG_ERR(("divasfunc: failed to connect to DIDD."))
220                         return (0);
221         }
222
223         version = diva_xdi_common_code_build;
224
225         divasa_xdi_driver_entry();
226
227         return (1);
228 }
229
230 /*
231  * exit
232  */
233 void divasfunc_exit(void)
234 {
235         divasa_xdi_driver_unload();
236         disconnect_didd();
237 }