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122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
/*
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* Copyright (c) 1994, Garrett A. Wollman. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: devconf.h,v 1.3 1994/10/23 21:28:03 wollman Exp $
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*/
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/*
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* devconf.h - device configuration table
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*
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* Garrett A. Wollman, October 1994.
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*/
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#ifndef _SYS_DEVCONF_H_
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#define _SYS_DEVCONF_H_ 1
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#include <machine/devconf.h>
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#define MAXDEVNAME 32
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#define MAXDEVDESCR 64
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enum dc_state {
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DC_UNKNOWN = 0, /* don't know the state or driver doesn't support */
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DC_UNCONFIGURED, /* driver is present but not configured */
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DC_IDLE, /* driver supports state and is not in use */
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DC_BUSY /* driver supports state and is currently busy */
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};
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struct devconf {
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char dc_name[MAXDEVNAME]; /* name */
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char dc_descr[MAXDEVDESCR]; /* description */
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int dc_unit; /* unit number */
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int dc_number; /* unique id */
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char dc_pname[MAXDEVNAME]; /* name of the parent device */
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int dc_punit; /* unit number of the parent */
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int dc_pnumber; /* unique id of the parent */
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struct machdep_devconf dc_md; /* machine-dependent stuff */
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enum dc_state dc_state; /* state of the device (see above) */
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size_t dc_datalen; /* length of data */
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char dc_data[1]; /* variable-length data */
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};
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#ifdef KERNEL
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struct kern_devconf; /* forward declaration */
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/*
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* These four routines are called from the generic configuration
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* table code to allow devices to provide their information in a
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* more useful form.
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*
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* EXTERNALIZE: convert internal representation to external and copy out
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* into user space.
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*/
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typedef int (*kdc_externalize_t)(struct proc *, struct kern_devconf *, void *,
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size_t);
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/*
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* INTERNALIZE: copy in from user space, convert to internal representation,
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* validate, and set configuration.
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*/
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typedef int (*kdc_internalize_t)(struct proc *, struct kern_devconf *, void *,
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size_t);
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/*
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* GOAWAY: shut the device down, if possible, and prepare to exit.
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*/
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typedef int (*kdc_shutdown_t)(struct kern_devconf *, int);
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struct kern_devconf {
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struct kern_devconf *kdc_next; /* filled in by kern_devconf */
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struct kern_devconf **kdc_rlink; /* filled in by kern_devconf */
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int kdc_number; /* filled in by kern_devconf */
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const char *kdc_name; /* filled in by driver */
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int kdc_unit; /* filled in by driver */
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struct machdep_kdevconf kdc_md; /* filled in by driver */
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kdc_externalize_t kdc_externalize; /* filled in by driver */
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kdc_internalize_t kdc_internalize; /* filled in by driver */
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kdc_shutdown_t kdc_shutdown; /* filled in by driver */
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size_t kdc_datalen; /* filled in by driver */
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struct kern_devconf *kdc_parent; /* filled in by driver */
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void *kdc_parentdata; /* filled in by driver */
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enum dc_state kdc_state; /* filled in by driver dynamically */
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const char *kdc_description; /* filled in by driver; maybe dyn. */
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};
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int dev_attach(struct kern_devconf *);
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int dev_detach(struct kern_devconf *);
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int dev_shutdownall(int);
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#endif /* KERNEL */
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/*
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* HW_DEVCONF sysctl(3) identifiers
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*/
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#define DEVCONF_NUMBER 0 /* get number of devices */
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#define DEVCONF_MAXID 1 /* number of items (not really) */
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#define HW_DEVCONF_NAMES { \
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{ "number", CTLTYPE_INT }, \
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}
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#endif /* _SYS_DEVCONF_H_ */
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