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/*
* Copyright (c) 1994, Garrett A. Wollman. 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: devconf.h,v 1.6 1995/04/13 20:37:51 wollman Exp $
*/
/*
* devconf.h - device configuration table
*
* Garrett A. Wollman, October 1994.
*/
#ifndef _SYS_DEVCONF_H_
#define _SYS_DEVCONF_H_ 1
#include <machine/devconf.h>
#define MAXDEVNAME 32
#define MAXDEVDESCR 64
enum dc_state {
DC_UNKNOWN = 0, /* don't know the state or driver doesn't support */
DC_UNCONFIGURED, /* driver is present but not configured */
DC_IDLE, /* driver supports state and is not in use */
DC_BUSY /* driver supports state and is currently busy */
};
#define DC_STATENAMES \
{ \
"unknown", "unconfigured", "idle", "busy" \
}
enum dc_class {
DC_CLS_UNKNOWN = 0, /* old drivers don't set class */
DC_CLS_CPU = 1, /* CPU devices */
DC_CLS_BUS = 2, /* busses */
DC_CLS_DISK = 4, /* disks */
DC_CLS_TAPE = 8, /* tapes */
DC_CLS_RDISK = 16, /* read-only disks */
DC_CLS_DISPLAY = 32, /* display devices */
DC_CLS_SERIAL = 64, /* serial I/O devices */
DC_CLS_PARALLEL = 128, /* parallel I/O devices */
DC_CLS_NETIF = 256, /* network interfaces */
DC_CLS_MISC = 512 /* anything else */
};
#define DC_CLASSNAMES \
{ \
"unknown", "cpu", "bus", "disk", "tape", "rodisk", \
"display", "serial", "parallel", "netif", \
"misc" \
}
struct devconf {
char dc_name[MAXDEVNAME]; /* name */
char dc_descr[MAXDEVDESCR]; /* description */
int dc_unit; /* unit number */
int dc_number; /* unique id */
char dc_pname[MAXDEVNAME]; /* name of the parent device */
int dc_punit; /* unit number of the parent */
int dc_pnumber; /* unique id of the parent */
struct machdep_devconf dc_md; /* machine-dependent stuff */
enum dc_state dc_state; /* state of the device (see above) */
enum dc_class dc_class; /* type of device (see above) */
size_t dc_datalen; /* length of data */
char dc_data[1]; /* variable-length data */
};
#ifdef KERNEL
struct kern_devconf; /* forward declaration */
/*
* These four routines are called from the generic configuration
* table code to allow devices to provide their information in a
* more useful form.
*
* EXTERNALIZE: convert internal representation to external and copy out
* into user space.
*/
struct sysctl_req;
typedef int (*kdc_externalize_t)(struct kern_devconf *, struct sysctl_req *);
/*
* INTERNALIZE: copy in from user space, convert to internal representation,
* validate, and set configuration.
*/
typedef int (*kdc_internalize_t)(struct kern_devconf *, struct sysctl_req *);
/*
* GOAWAY: shut the device down, if possible, and prepare to exit.
*/
typedef int (*kdc_shutdown_t)(struct kern_devconf *, int);
struct kern_devconf {
struct kern_devconf *kdc_next; /* filled in by kern_devconf */
struct kern_devconf **kdc_rlink; /* filled in by kern_devconf */
int kdc_number; /* filled in by kern_devconf */
const char *kdc_name; /* filled in by driver */
int kdc_unit; /* filled in by driver */
struct machdep_kdevconf kdc_md; /* filled in by driver */
kdc_externalize_t kdc_externalize; /* filled in by driver */
kdc_internalize_t kdc_internalize; /* filled in by driver */
kdc_shutdown_t kdc_shutdown; /* filled in by driver */
size_t kdc_datalen; /* filled in by driver */
struct kern_devconf *kdc_parent; /* filled in by driver */
void *kdc_parentdata; /* filled in by driver */
enum dc_state kdc_state; /* filled in by driver dynamically */
const char *kdc_description; /* filled in by driver; maybe dyn. */
enum dc_class kdc_class; /* filled in by driver */
};
int dev_attach(struct kern_devconf *);
int dev_detach(struct kern_devconf *);
int dev_shutdownall(int);
#endif /* KERNEL */
/*
* HW_DEVCONF sysctl(3) identifiers
*/
#define DEVCONF_NUMBER 0 /* get number of devices */
#define DEVCONF_MAXID 1 /* number of items (not really) */
#define HW_DEVCONF_NAMES { \
{ "number", CTLTYPE_INT }, \
}
#endif /* _SYS_DEVCONF_H_ */
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