56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
|
/*
|
||
|
|
* Copyright 2002/03, Thomas Kurschel. All rights reserved.
|
||
|
|
* Distributed under the terms of the MIT License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
PnP devfs driver interface.
|
||
|
|
|
||
|
|
The interface follows the normal pnp driver rules, i.e.
|
||
|
|
your driver creates a node for it and chooses PNP_DEVFS_MODULE_NAME
|
||
|
|
as the consumer, the type must be PNP_DEVFS_TYPE_NAME. The file
|
||
|
|
name is set via a PNP_DEVFS_FILENAME item.
|
||
|
|
|
||
|
|
Loading and unloading of your driver is done via the pnp manager.
|
||
|
|
Hooks are similar to the original devfs interface, but the open
|
||
|
|
hook gets the driver cookie (as returned by init_device of the
|
||
|
|
driver) instead of a filename.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _PNP_DEVFS_H
|
||
|
|
#define _PNP_DEVFS_H
|
||
|
|
|
||
|
|
|
||
|
|
#include <Drivers.h>
|
||
|
|
#include <device_manager.h>
|
||
|
|
|
||
|
|
|
||
|
|
// changed open hook - gets cookie returned by init_device instead of name
|
||
|
|
typedef status_t (*pnp_device_open_hook)(void *device_cookie, uint32 flags,
|
||
|
|
void **handle_cookie);
|
||
|
|
|
||
|
|
// new interface to devfs
|
||
|
|
typedef struct pnp_devfs_driver_info {
|
||
|
|
driver_module_info info;
|
||
|
|
|
||
|
|
pnp_device_open_hook open; // called to open the device
|
||
|
|
device_close_hook close; // called to close the device
|
||
|
|
device_free_hook free; // called to free the cookie
|
||
|
|
device_control_hook control; // called to control the device
|
||
|
|
device_read_hook read; // reads from the device
|
||
|
|
device_write_hook write; // writes to the device
|
||
|
|
device_select_hook select; // start select (can be NULL)
|
||
|
|
device_deselect_hook deselect; // stop select (can be NULL)
|
||
|
|
device_read_pages_hook read_pages; // scatter-gather read from the device (can be NULL)
|
||
|
|
device_write_pages_hook write_pages; // scatter-gather write to the device (can be NULL)
|
||
|
|
} pnp_devfs_driver_info;
|
||
|
|
|
||
|
|
|
||
|
|
// items:
|
||
|
|
// name under which the device should be published under /dev (required, string)
|
||
|
|
#define PNP_DEVFS_FILENAME "devfs/filename"
|
||
|
|
|
||
|
|
#define PNP_DEVFS_MODULE_NAME "system/devfs/device_v1"
|
||
|
|
|
||
|
|
#endif
|