58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/*
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** Copyright 2002/03, Thomas Kurschel. All rights reserved.
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** Distributed under the terms of the OpenBeOS License.
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*/
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/*
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PnP devfs driver interface.
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The interface follows the normal pnp driver rules, i.e.
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your driver creates a node for it and chooses PNP_DEVFS_MODULE_NAME
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as the consumer, the type must be PNP_DEVFS_TYPE_NAME. The file
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name is set via a PNP_DEVFS_FILENAME item.
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Loading and unloading of your driver is done via the pnp manager.
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Hooks are similar to the original devfs interface, but the open
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hook gets the driver cookie (as returned by init_device of the
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driver) instead of a filename.
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*/
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#ifndef _PNP_DEVFS_H
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#define _PNP_DEVFS_H
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#include <Drivers.h>
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#include <device_manager.h>
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//#include "r5_wrapper.h"
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// changed open hook - gets cookie returned by init_device instead of name
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typedef status_t (*pnp_device_open_hook)(void *device_cookie, uint32 flags,
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void **handle_cookie);
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// new interface to devfs
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typedef struct pnp_devfs_driver_info {
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driver_module_info info;
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pnp_device_open_hook open; // called to open the device
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device_close_hook close; // called to close the device
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device_free_hook free; // called to free the cookie
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device_control_hook control; // called to control the device
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device_read_hook read; // reads from the device
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device_write_hook write; // writes to the device
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device_select_hook select; // start select (can be NULL)
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device_deselect_hook deselect; // stop select (can be NULL)
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device_read_pages_hook read_pages; // scatter-gather read from the device (can be NULL)
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device_write_pages_hook write_pages; // scatter-gather write to the device (can be NULL)
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} pnp_devfs_driver_info;
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// items:
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// name under which the device should be published under /dev (required, string)
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#define PNP_DEVFS_FILENAME "devfs/filename"
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// type of devfs device drivers
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#define PNP_DEVFS_TYPE_NAME "devfs_device"
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#define PNP_DEVFS_MODULE_NAME "sys/pnp_devfs/v1"
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#endif
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