66 lines
2.8 KiB
C
66 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 2005, Sam Leffler <sam@errno.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice unmodified, this list of conditions, and the following
|
|
* disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _SYS_FIRMWARE_H_
|
|
#define _SYS_FIRMWARE_H_
|
|
/*
|
|
* Loadable firmware support.
|
|
*
|
|
* Firmware images are embedded in kernel loadable modules that can
|
|
* be loaded on-demand or pre-loaded as desired. Modules may contain
|
|
* one or more firmware images that are stored as opaque data arrays
|
|
* and registered with a unique string name. Consumers request
|
|
* firmware by name with held references counted to use in disallowing
|
|
* module/data unload.
|
|
*
|
|
* When multiple images are stored in one module the one image is
|
|
* treated as the master with the other images holding references
|
|
* to it. This means that to unload the module each dependent/subimage
|
|
* must first have its references removed.
|
|
*/
|
|
struct firmware {
|
|
const char *name; /* system-wide name */
|
|
const void *data; /* location of image */
|
|
size_t datasize; /* size of image in bytes */
|
|
unsigned int version; /* version of the image */
|
|
int refcnt; /* held references */
|
|
struct firmware *parent; /* not null if a subimage */
|
|
linker_file_t file; /* loadable module */
|
|
int flags; /* FIRMWAREFLAG_ flags */
|
|
};
|
|
|
|
/* "flags" field definitions */
|
|
#define FIRMWAREFLAG_KEEPKLDREF 0x0001 /* don't release KLD reference */
|
|
|
|
struct firmware *firmware_register(const char *, const void *, size_t,
|
|
unsigned int, struct firmware *);
|
|
int firmware_unregister(const char *);
|
|
struct firmware *firmware_get(const char *);
|
|
#define FIRMWARE_UNLOAD 0x0001 /* unload if unreferenced */
|
|
void firmware_put(struct firmware *, int);
|
|
#endif /* _SYS_FIRMWARE_H_ */
|