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