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",
109 diva_os_free(0, card);
116 static void um_remove_card(DESCRIPTOR * d)
118 diva_os_spin_lock_magic_t old_irql;
119 udiva_card *card = NULL;
121 if (!(card = find_card_in_list(d))) {
122 DBG_ERR(("cannot find card to remove"));
125 diva_user_mode_idi_remove_adapter(card->Id);
126 diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove card");
127 list_del(&card->list);
128 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove card");
129 DBG_LOG(("idi proc entry removed for card %d", card->Id));
130 diva_os_free(0, card);
136 static void DIVA_EXIT_FUNCTION remove_all_idi_proc(void)
139 diva_os_spin_lock_magic_t old_irql;
142 diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove all");
143 if (!list_empty(&cards)) {
144 card = list_entry(cards.next, udiva_card, list);
145 list_del(&card->list);
146 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
147 diva_user_mode_idi_remove_adapter(card->Id);
148 diva_os_free(0, card);
151 diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
155 * DIDD notify callback
157 static void *didd_callback(void *context, DESCRIPTOR * adapter,
160 if (adapter->type == IDI_DADAPTER) {
161 DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
163 } else if (adapter->type == IDI_DIMAINT) {
167 memcpy(&MAdapter, adapter, sizeof(MAdapter));
168 dprintf = (DIVA_DI_PRINTF) MAdapter.request;
169 DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
171 } else if ((adapter->type > 0) && (adapter->type < 16)) { /* IDI Adapter */
173 um_remove_card(adapter);
175 um_new_card(adapter);
184 static int DIVA_INIT_FUNCTION connect_didd(void)
189 DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
191 DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
193 for (x = 0; x < MAX_DESCRIPTORS; x++) {
194 if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
196 memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
197 req.didd_notify.e.Req = 0;
198 req.didd_notify.e.Rc =
199 IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
200 req.didd_notify.info.callback = (void *)didd_callback;
201 req.didd_notify.info.context = NULL;
202 DAdapter.request((ENTITY *) & req);
203 if (req.didd_notify.e.Rc != 0xff) {
207 notify_handle = req.didd_notify.info.handle;
208 } else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
209 memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
210 dprintf = (DIVA_DI_PRINTF) MAdapter.request;
211 DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
212 } else if ((DIDD_Table[x].type > 0)
213 && (DIDD_Table[x].type < 16)) { /* IDI Adapter found */
214 um_new_card(&DIDD_Table[x]);
226 * Disconnect from DIDD
228 static void DIVA_EXIT_FUNCTION disconnect_didd(void)
234 req.didd_notify.e.Req = 0;
235 req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
236 req.didd_notify.info.handle = notify_handle;
237 DAdapter.request((ENTITY *) & req);
243 int DIVA_INIT_FUNCTION idifunc_init(void)
245 diva_os_initialize_spin_lock(&ll_lock, "idifunc");
247 if (diva_user_mode_idi_init()) {
248 DBG_ERR(("init: init failed."));
252 if (!connect_didd()) {
253 diva_user_mode_idi_finit();
254 DBG_ERR(("init: failed to connect to DIDD."));
263 void DIVA_EXIT_FUNCTION idifunc_finit(void)
265 diva_user_mode_idi_finit();
267 remove_all_idi_proc();