| 1 | /*
|
|---|
| 2 | * Copyright (c) 2007 Josef Cejka
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup devmap
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 |
|
|---|
| 33 | #ifndef DEVMAP_DEVMAP_H_
|
|---|
| 34 | #define DEVMAP_DEVMAP_H_
|
|---|
| 35 |
|
|---|
| 36 | #include <ipc/ipc.h>
|
|---|
| 37 | #include <libadt/list.h>
|
|---|
| 38 |
|
|---|
| 39 | #define DEVMAP_NAME_MAXLEN 512
|
|---|
| 40 |
|
|---|
| 41 | typedef enum {
|
|---|
| 42 | DEVMAP_DRIVER_REGISTER = IPC_FIRST_USER_METHOD,
|
|---|
| 43 | DEVMAP_DRIVER_UNREGISTER,
|
|---|
| 44 | DEVMAP_DEVICE_REGISTER,
|
|---|
| 45 | DEVMAP_DEVICE_UNREGISTER,
|
|---|
| 46 | DEVMAP_DEVICE_GET_NAME,
|
|---|
| 47 | DEVMAP_DEVICE_GET_HANDLE
|
|---|
| 48 | } devmap_request_t;
|
|---|
| 49 |
|
|---|
| 50 | /** Representation of device driver.
|
|---|
| 51 | * Each driver is responsible for a set of devices.
|
|---|
| 52 | */
|
|---|
| 53 | typedef struct {
|
|---|
| 54 | /** Pointers to previous and next drivers in linked list */
|
|---|
| 55 | link_t drivers;
|
|---|
| 56 | /** Pointer to the linked list of devices controlled by
|
|---|
| 57 | * this driver */
|
|---|
| 58 | link_t devices;
|
|---|
| 59 | /** Phone asociated with this driver */
|
|---|
| 60 | ipcarg_t phone;
|
|---|
| 61 | /** Device driver name */
|
|---|
| 62 | char *name;
|
|---|
| 63 | /** Futex for list of devices owned by this driver */
|
|---|
| 64 | atomic_t devices_futex;
|
|---|
| 65 | } devmap_driver_t;
|
|---|
| 66 |
|
|---|
| 67 | /** Info about registered device
|
|---|
| 68 | *
|
|---|
| 69 | */
|
|---|
| 70 | typedef struct {
|
|---|
| 71 | /** Pointer to the previous and next device in the list of all devices */
|
|---|
| 72 | link_t devices;
|
|---|
| 73 | /** Pointer to the previous and next device in the list of devices
|
|---|
| 74 | owned by one driver */
|
|---|
| 75 | link_t driver_devices;
|
|---|
| 76 | /** Unique device identifier */
|
|---|
| 77 | int handle;
|
|---|
| 78 | /** Device name */
|
|---|
| 79 | char *name;
|
|---|
| 80 | /** Device driver handling this device */
|
|---|
| 81 | devmap_driver_t *driver;
|
|---|
| 82 | } devmap_device_t;
|
|---|
| 83 |
|
|---|
| 84 | /** Interface provided by devmap.
|
|---|
| 85 | * Every process that connects to devmap must ask one of following
|
|---|
| 86 | * interfaces otherwise connection will be refused.
|
|---|
| 87 | */
|
|---|
| 88 | typedef enum {
|
|---|
| 89 | /** Connect as device driver */
|
|---|
| 90 | DEVMAP_DRIVER = 1,
|
|---|
| 91 | /** Connect as client */
|
|---|
| 92 | DEVMAP_CLIENT,
|
|---|
| 93 | /** Create new connection to instance of device that
|
|---|
| 94 | * is specified by second argument of call. */
|
|---|
| 95 | DEVMAP_CONNECT_TO_DEVICE
|
|---|
| 96 | } devmap_interface_t;
|
|---|
| 97 |
|
|---|
| 98 | #endif
|
|---|
| 99 |
|
|---|
