1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
268 lines
6.3 KiB
C
268 lines
6.3 KiB
C
/* $Id: idifunc.c,v 1.14.4.4 2004/08/28 20:03:53 armin Exp $
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*
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* Driver for Eicon DIVA Server ISDN cards.
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* User Mode IDI Interface
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*
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* Copyright 2000-2003 by Armin Schindler (mac@melware.de)
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* Copyright 2000-2003 Cytronics & Melware (info@melware.de)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*/
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#include "platform.h"
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#include "di_defs.h"
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#include "divasync.h"
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#include "um_xdi.h"
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#include "um_idi.h"
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#define DBG_MINIMUM (DL_LOG + DL_FTL + DL_ERR)
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#define DBG_DEFAULT (DBG_MINIMUM + DL_XLOG + DL_REG)
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extern char *DRIVERRELEASE_IDI;
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extern void DIVA_DIDD_Read(void *, int);
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extern int diva_user_mode_idi_create_adapter(const DESCRIPTOR *, int);
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extern void diva_user_mode_idi_remove_adapter(int);
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static dword notify_handle;
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static DESCRIPTOR DAdapter;
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static DESCRIPTOR MAdapter;
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static void no_printf(unsigned char *x, ...)
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{
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/* dummy debug function */
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}
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#include "debuglib.c"
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/*
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* stop debug
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*/
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static void stop_dbg(void)
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{
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DbgDeregister();
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memset(&MAdapter, 0, sizeof(MAdapter));
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dprintf = no_printf;
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}
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typedef struct _udiva_card {
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struct list_head list;
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int Id;
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DESCRIPTOR d;
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} udiva_card;
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static LIST_HEAD(cards);
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static diva_os_spin_lock_t ll_lock;
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/*
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* find card in list
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*/
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static udiva_card *find_card_in_list(DESCRIPTOR * d)
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{
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udiva_card *card;
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struct list_head *tmp;
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diva_os_spin_lock_magic_t old_irql;
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diva_os_enter_spin_lock(&ll_lock, &old_irql, "find card");
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list_for_each(tmp, &cards) {
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card = list_entry(tmp, udiva_card, list);
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if (card->d.request == d->request) {
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diva_os_leave_spin_lock(&ll_lock, &old_irql,
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"find card");
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return (card);
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}
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}
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diva_os_leave_spin_lock(&ll_lock, &old_irql, "find card");
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return ((udiva_card *) NULL);
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}
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/*
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* new card
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*/
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static void um_new_card(DESCRIPTOR * d)
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{
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int adapter_nr = 0;
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udiva_card *card = NULL;
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IDI_SYNC_REQ sync_req;
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diva_os_spin_lock_magic_t old_irql;
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if (!(card = diva_os_malloc(0, sizeof(udiva_card)))) {
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DBG_ERR(("cannot get buffer for card"));
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return;
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}
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memcpy(&card->d, d, sizeof(DESCRIPTOR));
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sync_req.xdi_logical_adapter_number.Req = 0;
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sync_req.xdi_logical_adapter_number.Rc =
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IDI_SYNC_REQ_XDI_GET_LOGICAL_ADAPTER_NUMBER;
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card->d.request((ENTITY *) & sync_req);
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adapter_nr =
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sync_req.xdi_logical_adapter_number.info.logical_adapter_number;
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card->Id = adapter_nr;
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if (!(diva_user_mode_idi_create_adapter(d, adapter_nr))) {
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diva_os_enter_spin_lock(&ll_lock, &old_irql, "add card");
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list_add_tail(&card->list, &cards);
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diva_os_leave_spin_lock(&ll_lock, &old_irql, "add card");
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} else {
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DBG_ERR(("could not create user mode idi card %d",
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adapter_nr));
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}
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}
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/*
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* remove card
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*/
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static void um_remove_card(DESCRIPTOR * d)
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{
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diva_os_spin_lock_magic_t old_irql;
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udiva_card *card = NULL;
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if (!(card = find_card_in_list(d))) {
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DBG_ERR(("cannot find card to remove"));
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return;
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}
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diva_user_mode_idi_remove_adapter(card->Id);
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diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove card");
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list_del(&card->list);
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diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove card");
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DBG_LOG(("idi proc entry removed for card %d", card->Id));
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diva_os_free(0, card);
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}
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/*
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* remove all adapter
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*/
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static void DIVA_EXIT_FUNCTION remove_all_idi_proc(void)
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{
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udiva_card *card;
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diva_os_spin_lock_magic_t old_irql;
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rescan:
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diva_os_enter_spin_lock(&ll_lock, &old_irql, "remove all");
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if (!list_empty(&cards)) {
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card = list_entry(cards.next, udiva_card, list);
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list_del(&card->list);
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diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
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diva_user_mode_idi_remove_adapter(card->Id);
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diva_os_free(0, card);
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goto rescan;
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}
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diva_os_leave_spin_lock(&ll_lock, &old_irql, "remove all");
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}
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/*
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* DIDD notify callback
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*/
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static void *didd_callback(void *context, DESCRIPTOR * adapter,
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int removal)
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{
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if (adapter->type == IDI_DADAPTER) {
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DBG_ERR(("Notification about IDI_DADAPTER change ! Oops."));
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return (NULL);
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} else if (adapter->type == IDI_DIMAINT) {
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if (removal) {
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stop_dbg();
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} else {
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memcpy(&MAdapter, adapter, sizeof(MAdapter));
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dprintf = (DIVA_DI_PRINTF) MAdapter.request;
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DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
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}
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} else if ((adapter->type > 0) && (adapter->type < 16)) { /* IDI Adapter */
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if (removal) {
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um_remove_card(adapter);
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} else {
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um_new_card(adapter);
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}
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}
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return (NULL);
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}
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/*
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* connect DIDD
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*/
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static int DIVA_INIT_FUNCTION connect_didd(void)
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{
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int x = 0;
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int dadapter = 0;
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IDI_SYNC_REQ req;
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DESCRIPTOR DIDD_Table[MAX_DESCRIPTORS];
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DIVA_DIDD_Read(DIDD_Table, sizeof(DIDD_Table));
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for (x = 0; x < MAX_DESCRIPTORS; x++) {
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if (DIDD_Table[x].type == IDI_DADAPTER) { /* DADAPTER found */
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dadapter = 1;
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memcpy(&DAdapter, &DIDD_Table[x], sizeof(DAdapter));
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req.didd_notify.e.Req = 0;
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req.didd_notify.e.Rc =
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IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY;
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req.didd_notify.info.callback = (void *)didd_callback;
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req.didd_notify.info.context = NULL;
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DAdapter.request((ENTITY *) & req);
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if (req.didd_notify.e.Rc != 0xff) {
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stop_dbg();
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return (0);
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}
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notify_handle = req.didd_notify.info.handle;
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} else if (DIDD_Table[x].type == IDI_DIMAINT) { /* MAINT found */
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memcpy(&MAdapter, &DIDD_Table[x], sizeof(DAdapter));
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dprintf = (DIVA_DI_PRINTF) MAdapter.request;
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DbgRegister("User IDI", DRIVERRELEASE_IDI, DBG_DEFAULT);
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} else if ((DIDD_Table[x].type > 0)
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&& (DIDD_Table[x].type < 16)) { /* IDI Adapter found */
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um_new_card(&DIDD_Table[x]);
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}
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}
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if (!dadapter) {
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stop_dbg();
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}
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return (dadapter);
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}
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/*
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* Disconnect from DIDD
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*/
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static void DIVA_EXIT_FUNCTION disconnect_didd(void)
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{
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IDI_SYNC_REQ req;
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stop_dbg();
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req.didd_notify.e.Req = 0;
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req.didd_notify.e.Rc = IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY;
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req.didd_notify.info.handle = notify_handle;
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DAdapter.request((ENTITY *) & req);
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}
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/*
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* init
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*/
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int DIVA_INIT_FUNCTION idifunc_init(void)
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{
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diva_os_initialize_spin_lock(&ll_lock, "idifunc");
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if (diva_user_mode_idi_init()) {
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DBG_ERR(("init: init failed."));
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return (0);
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}
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if (!connect_didd()) {
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diva_user_mode_idi_finit();
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DBG_ERR(("init: failed to connect to DIDD."));
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return (0);
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}
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return (1);
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}
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/*
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* finit
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*/
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void DIVA_EXIT_FUNCTION idifunc_finit(void)
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{
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diva_user_mode_idi_finit();
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disconnect_didd();
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remove_all_idi_proc();
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}
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