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/*-
* Copyright (c) 1997,1998 Doug Rabson
* 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, 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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_BUS_PRIVATE_H_
#define _SYS_BUS_PRIVATE_H_
#include <sys/bus.h>
/*
* Used to attach drivers to devclasses.
*/
typedef struct driverlink *driverlink_t;
struct driverlink {
driver_t *driver;
TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */
};
/*
* Forward declarations
*/
typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
typedef TAILQ_HEAD(device_list, device) device_list_t;
struct devclass {
TAILQ_ENTRY(devclass) link;
driver_list_t drivers; /* bus devclasses store drivers for bus */
char *name;
device_t *devices; /* array of devices indexed by unit */
int maxunit; /* size of devices array */
};
/*
* Implementation of device.
*/
struct device {
/*
* A device is a kernel object. The first field must be the
* current ops table for the object.
*/
KOBJ_FIELDS;
/*
* Device hierarchy.
*/
TAILQ_ENTRY(device) link; /* list of devices in parent */
TAILQ_ENTRY(device) devlink; /* global device list membership */
device_t parent;
device_list_t children; /* list of subordinate devices */
/*
* Details of this device.
*/
driver_t *driver;
devclass_t devclass; /* device class which we are in */
int unit;
char* nameunit; /* name+unit e.g. foodev0 */
char* desc; /* driver specific description */
int busy; /* count of calls to device_busy() */
device_state_t state;
u_int32_t devflags; /* api level flags for device_get_flags() */
u_short flags;
#define DF_ENABLED 1 /* device should be probed/attached */
#define DF_FIXEDCLASS 2 /* devclass specified at create time */
#define DF_WILDCARD 4 /* unit was originally wildcard */
#define DF_DESCMALLOCED 8 /* description was malloced */
#define DF_QUIET 16 /* don't print verbose attach message */
#define DF_DONENOMATCH 32 /* don't execute DEVICE_NOMATCH again */
#define DF_EXTERNALSOFTC 64 /* softc not allocated by us */
u_char order; /* order from device_add_child_ordered() */
u_char pad;
void *ivars;
void *softc;
};
struct device_op_desc {
unsigned int offset; /* offset in driver ops */
struct method* method; /* internal method implementation */
devop_t deflt; /* default implementation */
const char* name; /* unique name (for registration) */
};
#endif /* !_SYS_BUS_PRIVATE_H_ */
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