1 /* $Id: idifunc.c,v 1.14.4.4 2004/08/28 20:03:53 armin Exp $
3 * Driver for Eicon DIVA Server ISDN cards.
4 * User Mode IDI Interface
6 * Copyright 2000-2003 by Armin Schindler (mac@melware.de)
7 * Copyright 2000-2003 Cytronics & Melware (info@melware.de)
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
19 #define DBG_MINIMUM (DL_LOG + DL_FTL + DL_ERR)
20 #define DBG_DEFAULT (DBG_MINIMUM + DL_XLOG + DL_REG)
22 extern char *DRIVERRELEASE_IDI;
24 extern void DIVA_DIDD_Read(void *, int);
25 extern int diva_user_mode_idi_create_adapter(const DESCRIPTOR *, int);
26 extern void diva_user_mode_idi_remove_adapter(int);
28 static dword notify_handle;
29 static DESCRIPTOR DAdapter;
30 static DESCRIPTOR MAdapter;
32 static void no_printf(unsigned char *x, ...)
34 /* dummy debug function */
42 static void stop_dbg(void)
45 memset(&MAdapter, 0, sizeof(MAdapter));
49 typedef struct _udiva_card {
50 struct list_head list;
55 static LIST_HEAD(cards);
56 static diva_os_spin_lock_t ll_lock;
61 static udiva_card *find_card_in_list(DESCRIPTOR * d)
64 struct list_head *tmp;
65 diva_os_spin_lock_magic_t old_irql;
67 diva_os_enter_spin_lock(&ll_lock, &old_irql, "find card");
68 list_for_each(tmp, &cards) {
69 card = list_entry(tmp, udiva_card, list);
70 if (card->d.request == d->request) {
71 diva_os_leave_spin_lock(&ll_lock, &old_irql,
76 diva_os_leave_spin_lock(&ll_lock, &old_irql, "find card");
77 return ((udiva_card *) NULL);
83 static void um_new_card(DESCRIPTOR * d)
86 udiva_card *card = NULL;
87 IDI_SYNC_REQ sync_req;
88 diva_os_spin_lock_magic_t old_irql;
90 if (!(card = diva_os_malloc(0, sizeof(udiva_card)))) {
91 DBG_ERR(("cannot get buffer for card"));
94 memcpy(&card->d, d, sizeof(DESCRIPTOR));
95 sync_req.xdi_logical_adapter_number.Req = 0;
96 sync_req.xdi_logical_adapter_number.Rc =
97 IDI_SYNC_REQ_XDI_GET_LOGICAL_ADAPTER_NUMBER;
98 card->d.request((ENTITY *) & sync_req);
100 sync_req.xdi_logical_adapter_number.info.logical_adapter_number;
101 card->Id = adapter_nr;
102 if (!(diva_user_mode_idi_create_adapter(d, adapter_nr))) {
103 diva_os_enter_spin_lock(&ll_lock, &old_irql, "add card");
104 list_add_tail(&card->list, &cards);
105 diva_os_leave_spin_lock(&ll_lock, &old_irql, "add card");
107 DBG_ERR(("could not create user mode idi card %d",
115 static void um_remove_card(DESCRIPTOR * d)
117 diva_os_spin_lock_magic_t old_irql;
118 udiva_card *card = NULL;
120 if (!(card = find_card_in_list(d))) {
121 DBG_ERR(("cannot find card to remove"));
124 diva_user_mode_idi_remove_adapter(card->Id);
125 diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove card");
126 list_del(&card->list);
127 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove card");
128 DBG_LOG(("idi proc entry removed for card %d", card->Id));
129 diva_os_free(0, card);
135 static void DIVA_EXIT_FUNCTION remove_all_idi_proc(void)
138 diva_os_spin_lock_magic_t old_irql;
141 diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove all");
142 if (!list_empty(&cards)) {
143 card = list_entry(cards.next, udiva_card, list);
144 list_del(&card->list);
145 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
146 diva_user_mode_idi_remove_adapter(card->Id);
147 diva_os_free(0, card);
150 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
154 * DIDD notify callback
156 static void *didd_callback(void *context, DESCRIPTOR * adapter,
159 if (adapter->type == IDI_DADAPTER) {
160 DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
162 } else if (adapter->type == IDI_DIMAINT) {
166 memcpy(&MAdapter, adapter, sizeof(MAdapter));
167 dprintf = (DIVA_DI_PRINTF) MAdapter.request;
168 DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
170 } else if ((adapter->type > 0) && (adapter->type < 16)) { /* IDI Adapter */
172 um_remove_card(adapter);
174 um_new_card(adapter);
183 static int DIVA_INIT_FUNCTION connect_didd(void)
188 DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
190 DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
192 for (x = 0; x < MAX_DESCRIPTORS; x++) {
193 if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
195 memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
196 req.didd_notify.e.Req = 0;
197 req.didd_notify.e.Rc =
198 IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
199 req.didd_notify.info.callback = (void *)didd_callback;
200 req.didd_notify.info.context = NULL;
201 DAdapter.request((ENTITY *) & req);
202 if (req.didd_notify.e.Rc != 0xff) {
206 notify_handle = req.didd_notify.info.handle;
207 } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
208 memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
209 dprintf = (DIVA_DI_PRINTF) MAdapter.request;
210 DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
211 } else if ((DIDD_Table[x].type > 0)
212 && (DIDD_Table[x].type < 16)) { /* IDI Adapter found */
213 um_new_card(&DIDD_Table[x]);
225 * Disconnect from DIDD
227 static void DIVA_EXIT_FUNCTION disconnect_didd(void)
233 req.didd_notify.e.Req = 0;
234 req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
235 req.didd_notify.info.handle = notify_handle;
236 DAdapter.request((ENTITY *) & req);
242 int DIVA_INIT_FUNCTION idifunc_init(void)
244 diva_os_initialize_spin_lock(&ll_lock, "idifunc");
246 if (diva_user_mode_idi_init()) {
247 DBG_ERR(("init: init failed."));
251 if (!connect_didd()) {
252 diva_user_mode_idi_finit();
253 DBG_ERR(("init: failed to connect to DIDD."));
262 void DIVA_EXIT_FUNCTION idifunc_finit(void)
264 diva_user_mode_idi_finit();
266 remove_all_idi_proc();