diff options
Diffstat (limited to 'drivers/isdn/hardware/eicon/dadapter.c')
| -rw-r--r-- | drivers/isdn/hardware/eicon/dadapter.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/drivers/isdn/hardware/eicon/dadapter.c b/drivers/isdn/hardware/eicon/dadapter.c deleted file mode 100644 index 51420999418d..000000000000 --- a/drivers/isdn/hardware/eicon/dadapter.c +++ /dev/null @@ -1,364 +0,0 @@ -/* - * - Copyright (c) Eicon Networks, 2002. - * - This source file is supplied for the use with - Eicon Networks range of DIVA Server Adapters. - * - Eicon File Revision : 2.1 - * - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - * - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY - implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - See the GNU General Public License for more details. - * - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ -#include "platform.h" -#include "pc.h" -#include "debuglib.h" -#include "di_defs.h" -#include "divasync.h" -#include "dadapter.h" -/* -------------------------------------------------------------------------- - Adapter array change notification framework - -------------------------------------------------------------------------- */ -typedef struct _didd_adapter_change_notification { - didd_adapter_change_callback_t callback; - void IDI_CALL_ENTITY_T *context; -} didd_adapter_change_notification_t, \ - * IDI_CALL_ENTITY_T pdidd_adapter_change_notification_t; -#define DIVA_DIDD_MAX_NOTIFICATIONS 256 -static didd_adapter_change_notification_t \ -NotificationTable[DIVA_DIDD_MAX_NOTIFICATIONS]; -/* -------------------------------------------------------------------------- - Array to held adapter information - -------------------------------------------------------------------------- */ -static DESCRIPTOR HandleTable[NEW_MAX_DESCRIPTORS]; -static dword Adapters = 0; /* Number of adapters */ -/* -------------------------------------------------------------------------- - Shadow IDI_DIMAINT - and 'shadow' debug stuff - -------------------------------------------------------------------------- */ -static void no_printf(unsigned char *format, ...) -{ -#ifdef EBUG - va_list ap; - va_start(ap, format); - debug((format, ap)); - va_end(ap); -#endif -} - -/* ------------------------------------------------------------------------- - Portable debug Library - ------------------------------------------------------------------------- */ -#include "debuglib.c" - -static DESCRIPTOR MAdapter = {IDI_DIMAINT, /* Adapter Type */ - 0x00, /* Channels */ - 0x0000, /* Features */ - (IDI_CALL)no_printf}; -/* -------------------------------------------------------------------------- - DAdapter. Only IDI clients with buffer, that is huge enough to - get all descriptors will receive information about DAdapter - { byte type, byte channels, word features, IDI_CALL request } - -------------------------------------------------------------------------- */ -static void IDI_CALL_LINK_T diva_dadapter_request(ENTITY IDI_CALL_ENTITY_T *); -static DESCRIPTOR DAdapter = {IDI_DADAPTER, /* Adapter Type */ - 0x00, /* Channels */ - 0x0000, /* Features */ - diva_dadapter_request }; -/* -------------------------------------------------------------------------- - LOCALS - -------------------------------------------------------------------------- */ -static dword diva_register_adapter_callback(\ - didd_adapter_change_callback_t callback, - void IDI_CALL_ENTITY_T *context); -static void diva_remove_adapter_callback(dword handle); -static void diva_notify_adapter_change(DESCRIPTOR *d, int removal); -static diva_os_spin_lock_t didd_spin; -/* -------------------------------------------------------------------------- - Should be called as first step, after driver init - -------------------------------------------------------------------------- */ -void diva_didd_load_time_init(void) { - memset(&HandleTable[0], 0x00, sizeof(HandleTable)); - memset(&NotificationTable[0], 0x00, sizeof(NotificationTable)); - diva_os_initialize_spin_lock(&didd_spin, "didd"); -} -/* -------------------------------------------------------------------------- - Should be called as last step, if driver does unload - -------------------------------------------------------------------------- */ -void diva_didd_load_time_finit(void) { - diva_os_destroy_spin_lock(&didd_spin, "didd"); -} -/* -------------------------------------------------------------------------- - Called in order to register new adapter in adapter array - return adapter handle (> 0) on success - return -1 adapter array overflow - -------------------------------------------------------------------------- */ -static int diva_didd_add_descriptor(DESCRIPTOR *d) { - diva_os_spin_lock_magic_t irql; - int i; - if (d->type == IDI_DIMAINT) { - if (d->request) { - MAdapter.request = d->request; - dprintf = (DIVA_DI_PRINTF)d->request; - diva_notify_adapter_change(&MAdapter, 0); /* Inserted */ - DBG_TRC(("DIMAINT registered, dprintf=%08x", d->request)) - } else { - DBG_TRC(("DIMAINT removed")) - diva_notify_adapter_change(&MAdapter, 1); /* About to remove */ - MAdapter.request = (IDI_CALL)no_printf; - dprintf = no_printf; - } - return (NEW_MAX_DESCRIPTORS); - } - for (i = 0; i < NEW_MAX_DESCRIPTORS; i++) { - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_add"); - if (HandleTable[i].type == 0) { - memcpy(&HandleTable[i], d, sizeof(*d)); - Adapters++; - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_add"); - diva_notify_adapter_change(d, 0); /* we have new adapter */ - DBG_TRC(("Add adapter[%d], request=%08x", (i + 1), d->request)) - return (i + 1); - } - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_add"); - } - DBG_ERR(("Can't add adapter, out of resources")) - return (-1); -} -/* -------------------------------------------------------------------------- - Called in order to remove one registered adapter from array - return adapter handle (> 0) on success - return 0 on success - -------------------------------------------------------------------------- */ -static int diva_didd_remove_descriptor(IDI_CALL request) { - diva_os_spin_lock_magic_t irql; - int i; - if (request == MAdapter.request) { - DBG_TRC(("DIMAINT removed")) - dprintf = no_printf; - diva_notify_adapter_change(&MAdapter, 1); /* About to remove */ - MAdapter.request = (IDI_CALL)no_printf; - return (0); - } - for (i = 0; (Adapters && (i < NEW_MAX_DESCRIPTORS)); i++) { - if (HandleTable[i].request == request) { - diva_notify_adapter_change(&HandleTable[i], 1); /* About to remove */ - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_rm"); - memset(&HandleTable[i], 0x00, sizeof(HandleTable[0])); - Adapters--; - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_rm"); - DBG_TRC(("Remove adapter[%d], request=%08x", (i + 1), request)) - return (0); - } - } - DBG_ERR(("Invalid request=%08x, can't remove adapter", request)) - return (-1); -} -/* -------------------------------------------------------------------------- - Read adapter array - return 1 if not enough space to save all available adapters - -------------------------------------------------------------------------- */ -static int diva_didd_read_adapter_array(DESCRIPTOR *buffer, int length) { - diva_os_spin_lock_magic_t irql; - int src, dst; - memset(buffer, 0x00, length); - length /= sizeof(DESCRIPTOR); - DBG_TRC(("DIDD_Read, space = %d, Adapters = %d", length, Adapters + 2)) - - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_read"); - for (src = 0, dst = 0; - (Adapters && (src < NEW_MAX_DESCRIPTORS) && (dst < length)); - src++) { - if (HandleTable[src].type) { - memcpy(&buffer[dst], &HandleTable[src], sizeof(DESCRIPTOR)); - dst++; - } - } - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_read"); - if (dst < length) { - memcpy(&buffer[dst], &MAdapter, sizeof(DESCRIPTOR)); - dst++; - } else { - DBG_ERR(("Can't write DIMAINT. Array too small")) - } - if (dst < length) { - memcpy(&buffer[dst], &DAdapter, sizeof(DESCRIPTOR)); - dst++; - } else { - DBG_ERR(("Can't write DADAPTER. Array too small")) - } - DBG_TRC(("Read %d adapters", dst)) - return (dst == length); -} -/* -------------------------------------------------------------------------- - DAdapter request function. - This function does process only synchronous requests, and is used - for reception/registration of new interfaces - -------------------------------------------------------------------------- */ -static void IDI_CALL_LINK_T diva_dadapter_request( \ - ENTITY IDI_CALL_ENTITY_T *e) { - IDI_SYNC_REQ *syncReq = (IDI_SYNC_REQ *)e; - if (e->Req) { /* We do not process it, also return error */ - e->Rc = OUT_OF_RESOURCES; - DBG_ERR(("Can't process async request, Req=%02x", e->Req)) - return; - } - /* - So, we process sync request - */ - switch (e->Rc) { - case IDI_SYNC_REQ_DIDD_REGISTER_ADAPTER_NOTIFY: { - diva_didd_adapter_notify_t *pinfo = &syncReq->didd_notify.info; - pinfo->handle = diva_register_adapter_callback( \ - (didd_adapter_change_callback_t)pinfo->callback, - (void IDI_CALL_ENTITY_T *)pinfo->context); - e->Rc = 0xff; - } break; - case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER_NOTIFY: { - diva_didd_adapter_notify_t *pinfo = &syncReq->didd_notify.info; - diva_remove_adapter_callback(pinfo->handle); - e->Rc = 0xff; - } break; - case IDI_SYNC_REQ_DIDD_ADD_ADAPTER: { - diva_didd_add_adapter_t *pinfo = &syncReq->didd_add_adapter.info; - if (diva_didd_add_descriptor((DESCRIPTOR *)pinfo->descriptor) < 0) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - case IDI_SYNC_REQ_DIDD_REMOVE_ADAPTER: { - diva_didd_remove_adapter_t *pinfo = &syncReq->didd_remove_adapter.info; - if (diva_didd_remove_descriptor((IDI_CALL)pinfo->p_request) < 0) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - case IDI_SYNC_REQ_DIDD_READ_ADAPTER_ARRAY: { - diva_didd_read_adapter_array_t *pinfo =\ - &syncReq->didd_read_adapter_array.info; - if (diva_didd_read_adapter_array((DESCRIPTOR *)pinfo->buffer, - (int)pinfo->length)) { - e->Rc = OUT_OF_RESOURCES; - } else { - e->Rc = 0xff; - } - } break; - default: - DBG_ERR(("Can't process sync request, Req=%02x", e->Rc)) - e->Rc = OUT_OF_RESOURCES; - } -} -/* -------------------------------------------------------------------------- - IDI client does register his notification function - -------------------------------------------------------------------------- */ -static dword diva_register_adapter_callback( \ - didd_adapter_change_callback_t callback, - void IDI_CALL_ENTITY_T *context) { - diva_os_spin_lock_magic_t irql; - dword i; - - for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy_add"); - if (!NotificationTable[i].callback) { - NotificationTable[i].callback = callback; - NotificationTable[i].context = context; - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_add"); - DBG_TRC(("Register adapter notification[%d]=%08x", i + 1, callback)) - return (i + 1); - } - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_add"); - } - DBG_ERR(("Can't register adapter notification, overflow")) - return (0); -} -/* -------------------------------------------------------------------------- - IDI client does register his notification function - -------------------------------------------------------------------------- */ -static void diva_remove_adapter_callback(dword handle) { - diva_os_spin_lock_magic_t irql; - if (handle && ((--handle) < DIVA_DIDD_MAX_NOTIFICATIONS)) { - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy_rm"); - NotificationTable[handle].callback = NULL; - NotificationTable[handle].context = NULL; - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy_rm"); - DBG_TRC(("Remove adapter notification[%d]", (int)(handle + 1))) - return; - } - DBG_ERR(("Can't remove adapter notification, handle=%d", handle)) - } -/* -------------------------------------------------------------------------- - Notify all client about adapter array change - Does suppose following behavior in the client side: - Step 1: Redister Notification - Step 2: Read Adapter Array - -------------------------------------------------------------------------- */ -static void diva_notify_adapter_change(DESCRIPTOR *d, int removal) { - int i, do_notify; - didd_adapter_change_notification_t nfy; - diva_os_spin_lock_magic_t irql; - for (i = 0; i < DIVA_DIDD_MAX_NOTIFICATIONS; i++) { - do_notify = 0; - diva_os_enter_spin_lock(&didd_spin, &irql, "didd_nfy"); - if (NotificationTable[i].callback) { - memcpy(&nfy, &NotificationTable[i], sizeof(nfy)); - do_notify = 1; - } - diva_os_leave_spin_lock(&didd_spin, &irql, "didd_nfy"); - if (do_notify) { - (*(nfy.callback))(nfy.context, d, removal); - } - } -} -/* -------------------------------------------------------------------------- - For all systems, that are linked by Kernel Mode Linker this is ONLY one - function thet should be exported by this device driver - IDI clients should look for IDI_DADAPTER, and use request function - of this adapter (sync request) in order to receive appropriate services: - - add new adapter - - remove existing adapter - - add adapter array notification - - remove adapter array notification - (read adapter is redundant in this case) - INPUT: - buffer - pointer to buffer that will receive adapter array - length - length (in bytes) of space in buffer - OUTPUT: - Adapter array will be written to memory described by 'buffer' - If the last adapter seen in the returned adapter array is - IDI_DADAPTER or if last adapter in array does have type '0', then - it was enougth space in buffer to accommodate all available - adapter descriptors - *NOTE 1 (debug interface): - The IDI adapter of type 'IDI_DIMAINT' does register as 'request' - famous 'dprintf' function (of type DI_PRINTF, please look - include/debuglib.c and include/debuglib.h) for details. - So dprintf is not exported from module debug module directly, - instead of this IDI_DIMAINT is registered. - Module load order will receive in this case: - 1. DIDD (this file) - 2. DIMAINT does load and register 'IDI_DIMAINT', at this step - DIDD should be able to get 'dprintf', save it, and - register with DIDD by means of 'dprintf' function. - 3. any other driver is loaded and is able to access adapter array - and debug interface - This approach does allow to load/unload debug interface on demand, - and save memory, it it is necessary. - -------------------------------------------------------------------------- */ -void IDI_CALL_LINK_T DIVA_DIDD_Read(void IDI_CALL_ENTITY_T *buffer, - int length) { - diva_didd_read_adapter_array(buffer, length); -} |