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/*-
* Copyright (c) 2000 Michael Smith
* Copyright (c) 2000 BSDi
* 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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
#include <sys/_types.h>
typedef __uintptr_t devinfo_handle_t;
#define DEVINFO_ROOT_DEVICE ((devinfo_handle_t)0)
/*
* State of the device.
*/
/* XXX not sure if I want a copy here, or expose sys/bus.h */
typedef enum devinfo_state {
DIS_NOTPRESENT, /* not probed or probe failed */
DIS_ALIVE, /* probe succeeded */
DIS_ATTACHED, /* attach method called */
DIS_BUSY /* device is open */
} devinfo_state_t;
struct devinfo_dev {
devinfo_handle_t dd_handle; /* device handle */
devinfo_handle_t dd_parent; /* parent handle */
char *dd_name; /* name of device */
char *dd_desc; /* device description */
char *dd_drivername; /* name of attached driver*/
char *dd_pnpinfo; /* pnp info from parent bus */
char *dd_location; /* Where bus thinks dev at */
uint32_t dd_devflags; /* API flags */
uint16_t dd_flags; /* internal dev flags */
devinfo_state_t dd_state; /* attacement state of dev */
};
struct devinfo_rman {
devinfo_handle_t dm_handle; /* resource manager handle */
unsigned long dm_start; /* resource start */
unsigned long dm_size; /* resource size */
char *dm_desc; /* resource description */
};
struct devinfo_res {
devinfo_handle_t dr_handle; /* resource handle */
devinfo_handle_t dr_rman; /* resource manager handle */
devinfo_handle_t dr_device; /* owning device */
unsigned long dr_start; /* region start */
unsigned long dr_size; /* region size */
/* XXX add flags */
};
/*
* Acquire a coherent copy of the kernel's device and resource tables.
* This must return success (zero) before any other interfaces will
* function. Sets errno on failure.
*/
extern int devinfo_init(void);
/*
* Release the storage associated with the internal copy of the device
* and resource tables. devinfo_init must be called before any attempt
* is made to use any other interfaces.
*/
extern void devinfo_free(void);
/*
* Find a device/resource/resource manager by its handle.
*/
extern struct devinfo_dev
*devinfo_handle_to_device(devinfo_handle_t handle);
extern struct devinfo_res
*devinfo_handle_to_resource(devinfo_handle_t handle);
extern struct devinfo_rman
*devinfo_handle_to_rman(devinfo_handle_t handle);
/*
* Iterate over the children of a device, calling (fn) on each. If
* (fn) returns nonzero, abort the scan and return.
*/
extern int
devinfo_foreach_device_child(struct devinfo_dev *parent,
int (* fn)(struct devinfo_dev *child, void *arg),
void *arg);
/*
* Iterate over all the resources owned by a device, calling (fn) on each.
* If (fn) returns nonzero, abort the scan and return.
*/
extern int
devinfo_foreach_device_resource(struct devinfo_dev *dev,
int (* fn)(struct devinfo_dev *dev,
struct devinfo_res *res, void *arg),
void *arg);
/*
* Iterate over all the resources owned by a resource manager, calling (fn)
* on each. If (fn) returns nonzero, abort the scan and return.
*/
extern int
devinfo_foreach_rman_resource(struct devinfo_rman *rman,
int (* fn)(struct devinfo_res *res, void *arg),
void *arg);
/*
* Iterate over all the resource managers, calling (fn) on each. If (fn)
* returns nonzero, abort the scan and return.
*/
extern int
devinfo_foreach_rman(int (* fn)(struct devinfo_rman *rman, void *arg),
void *arg);
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