keii.dev
1/*
2 * Copyright (C) 2020-2022 The opuntiaOS Project Authors.
3 * + Contributed by Nikita Melekhin <nimelehin@gmail.com>
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#ifndef _KERNEL_DRIVERS_DRIVER_MANAGER_H
10#define _KERNEL_DRIVERS_DRIVER_MANAGER_H
11
12#include <drivers/bits/device.h>
13#include <drivers/bits/driver.h>
14#include <drivers/devtree.h>
15#include <libkern/types.h>
16
17#define MAX_DRIVERS_COUNT 256
18#define MAX_DEVICES_COUNT 64
19
20#define DEVMAN_FUNC_NOTIFY 0x0
21#define DEVMAN_FUNC_DEVICE_START 0x1
22#define DEVMAN_FUNC_DRIVER_START 0x1
23#define DEVMAN_FUNC_DRIVER_EMIT_DRIVER 0x1
24#define DEVMAN_FUNC_DRIVER_EMIT_DEVICE 0x2
25
26#define DEFAULT_DRIVER_PRIV (100)
27
28typedef void (*driver_installation_func_t)();
29#define devman_register_driver_installation_order(func, N) \
30 static driver_installation_func_t registered_driver_##func \
31 __attribute__((used)) __attribute__((section(".driver_init_sections." #N))) \
32 = func
33
34#define devman_register_driver_installation(func) devman_register_driver_installation_order(func, DEFAULT_DRIVER_PRIV)
35
36enum DEVMAN_NOTIFICATIONS {
37 DEVMAN_NOTIFICATION_DEVFS_READY = 0,
38 DEVMAN_NOTIFICATION_NEW_DRIVER = 1,
39 DEVMAN_NOTIFICATION_NEW_DEVICE = 2,
40 DEVMAN_NOTIFICATION_STOP,
41};
42
43extern driver_t drivers[MAX_DRIVERS_COUNT];
44extern device_t devices[MAX_DEVICES_COUNT];
45
46int devman_init();
47int devman_install_drivers();
48void devman_run();
49int devman_register_driver(driver_desc_t driver_info, const char* name);
50int devman_register_device(device_desc_t device_info, int type);
51device_t* new_virtual_device(int type);
52int devman_get_driver_id_by_name();
53void devman_send_notification(uint32_t msg, uint32_t param);
54
55static inline void* devman_driver_function(int driver_id, int function_id)
56{
57 return drivers[driver_id].desc.functions[function_id];
58}
59
60static inline void* devman_function_handler(device_t* dev, int function_id)
61{
62 return devman_driver_function(dev->driver_id, function_id);
63}
64
65#endif // _KERNEL_DRIVERS_DRIVER_MANAGER_H