Merge branch 'linus' into timers/nohz
[linux-2.6] / 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]-%s-%s)",
117                  DIVA_BUILD, diva_xdi_common_code_build, __DATE__,
118                  __TIME__))
119 }
120
121 /*
122  * stop debug
123  */
124 static void stop_dbg(void)
125 {
126         DbgDeregister();
127         memset(&MAdapter, 0, sizeof(MAdapter));
128         dprintf = no_printf;
129 }
130
131 /*
132  * didd callback function
133  */
134 static void *didd_callback(void *context, DESCRIPTOR * adapter,
135                            int removal)
136 {
137         if (adapter->type == IDI_DADAPTER) {
138                 DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
139                 return (NULL);
140         }
141
142         if (adapter->type == IDI_DIMAINT) {
143                 if (removal) {
144                         stop_dbg();
145                 } else {
146                         memcpy(&MAdapter, adapter, sizeof(MAdapter));
147                         dprintf = (DIVA_DI_PRINTF) MAdapter.request;
148                         start_dbg();
149                 }
150         }
151         return (NULL);
152 }
153
154 /*
155  * connect to didd
156  */
157 static int DIVA_INIT_FUNCTION connect_didd(void)
158 {
159         int x = 0;
160         int dadapter = 0;
161         IDI_SYNC_REQ req;
162         DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
163
164         DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
165
166         for (x = 0; x < MAX_DESCRIPTORS; x++) {
167                 if (DIDD_Table[x].type == IDI_DADAPTER) {       /* DADAPTER found */
168                         dadapter = 1;
169                         memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
170                         req.didd_notify.e.Req = 0;
171                         req.didd_notify.e.Rc =
172                             IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
173                         req.didd_notify.info.callback = (void *)didd_callback;
174                         req.didd_notify.info.context = NULL;
175                         DAdapter.request((ENTITY *) & req);
176                         if (req.didd_notify.e.Rc != 0xff) {
177                                 stop_dbg();
178                                 return (0);
179                         }
180                         notify_handle = req.didd_notify.info.handle;
181                 } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
182                         memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
183                         dprintf = (DIVA_DI_PRINTF) MAdapter.request;
184                         start_dbg();
185                 }
186         }
187
188         if (!dadapter) {
189                 stop_dbg();
190         }
191
192         return (dadapter);
193 }
194
195 /*
196  * disconnect from didd
197  */
198 static void disconnect_didd(void)
199 {
200         IDI_SYNC_REQ req;
201
202         stop_dbg();
203
204         req.didd_notify.e.Req = 0;
205         req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
206         req.didd_notify.info.handle = notify_handle;
207         DAdapter.request((ENTITY *) & req);
208 }
209
210 /*
211  * init
212  */
213 int DIVA_INIT_FUNCTION divasfunc_init(int dbgmask)
214 {
215         char *version;
216
217         debugmask = dbgmask;
218         
219         if (!connect_didd()) {
220                 DBG_ERR(("divasfunc: failed to connect to DIDD."))
221                 return (0);
222         }
223
224         version = diva_xdi_common_code_build;
225
226         divasa_xdi_driver_entry();
227
228         return (1);
229 }
230
231 /*
232  * exit
233  */
234 void divasfunc_exit(void)
235 {
236         divasa_xdi_driver_unload();
237         disconnect_didd();
238 }