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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.
*
* $Id: bus_private.h,v 1.4 1998/11/14 21:58:41 wollman Exp $
*/
#ifndef _SYS_BUS_PRIVATE_H_
#define _SYS_BUS_PRIVATE_H_
#include <sys/bus.h>
/*
* Forward declarations
*/
typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
typedef TAILQ_HEAD(driver_list, driver) 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 */
int nextunit; /* next unused unit number */
};
/*
* Resources from config(8).
*/
typedef enum {
RES_INT, RES_STRING, RES_LONG
} resource_type;
struct config_resource {
char *name;
resource_type type;
union {
long longval;
int intval;
char* stringval;
} u;
};
struct config_device {
char *name; /* e.g. "lpt", "wdc" etc */
int unit;
int resource_count;
struct config_resource *resources;
};
/*
* Compiled device methods.
*/
struct device_ops {
int maxoffset;
devop_t methods[1];
};
/*
* Helpers for device method wrappers.
*/
#define DEVOPDESC(OP) (&OP##_##desc)
#define DEVOPOFF(DEV, OP) \
((DEVOPDESC(OP)->offset >= DEV->ops->maxoffset \
|| !DEV->ops->methods[DEVOPDESC(OP)->offset]) \
? 0 : DEVOPDESC(OP)->offset)
#define DEVOPMETH(DEV, OP) (DEV->ops->methods[DEVOPOFF(DEV, OP)])
/*
* Implementation of device.
*/
struct device {
/*
* Device hierarchy.
*/
TAILQ_ENTRY(device) link; /* list of devices in parent */
device_t parent;
device_list_t children; /* list of subordinate devices */
/*
* Details of this device.
*/
device_ops_t ops;
driver_t *driver;
devclass_t devclass; /* device class which we are in */
int unit;
const char* desc; /* driver specific description */
int busy; /* count of calls to device_busy() */
device_state_t state;
int 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 */
void *ivars;
void *softc;
};
struct device_op_desc {
unsigned int offset; /* offset in driver ops */
const char* name; /* unique name (for registration) */
};
#endif /* !_SYS_BUS_PRIVATE_H_ */
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