146 lines
5.9 KiB
C
146 lines
5.9 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)device.h 8.2 (Berkeley) 2/17/94
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* $Id$
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*/
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#ifndef _SYS_DEVICE_H_
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#define _SYS_DEVICE_H_
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/*
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* Minimal device structures.
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* Note that all ``system'' device types are listed here.
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*/
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enum devclass {
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DV_DULL, /* generic, no special info */
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DV_CPU, /* CPU (carries resource utilization) */
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DV_DISK, /* disk drive (label, etc) */
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DV_IFNET, /* network interface */
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DV_TAPE, /* tape device */
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DV_TTY /* serial line interface (???) */
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};
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struct device {
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enum devclass dv_class; /* this device's classification */
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struct device *dv_next; /* next in list of all */
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struct cfdata *dv_cfdata; /* config data that found us */
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int dv_unit; /* device unit number */
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char dv_xname[16]; /* external name (name + unit) */
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struct device *dv_parent; /* pointer to parent device */
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};
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/* `event' counters (use zero or more per device instance, as needed) */
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struct evcnt {
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struct evcnt *ev_next; /* linked list */
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struct device *ev_dev; /* associated device */
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int ev_count; /* how many have occurred */
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char ev_name[8]; /* what to call them (systat display) */
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};
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/*
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* Configuration data (i.e., data placed in ioconf.c).
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*/
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struct cfdata {
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struct cfdriver *cf_driver; /* config driver */
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short cf_unit; /* unit number */
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short cf_fstate; /* finding state (below) */
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int *cf_loc; /* locators (machine dependent) */
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int cf_flags; /* flags from config */
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short *cf_parents; /* potential parents */
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void (**cf_ivstubs) __P((void));
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/* config-generated vectors, if any */
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};
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#define FSTATE_NOTFOUND 0 /* has not been found */
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#define FSTATE_FOUND 1 /* has been found */
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#define FSTATE_STAR 2 /* duplicable */
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typedef int (*cfmatch_t) __P((struct device *, struct cfdata *, void *));
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/*
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* `configuration' driver (what the machine-independent autoconf uses).
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* As devices are found, they are applied against all the potential matches.
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* The one with the best match is taken, and a device structure (plus any
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* other data desired) is allocated. Pointers to these are placed into
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* an array of pointers. The array itself must be dynamic since devices
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* can be found long after the machine is up and running.
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*/
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struct cfdriver {
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void **cd_devs; /* devices found */
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char *cd_name; /* device name */
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cfmatch_t cd_match; /* returns a match level */
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void (*cd_attach) __P((struct device *, struct device *, void *));
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enum devclass cd_class; /* device classification */
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size_t cd_devsize; /* size of dev data (for malloc) */
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void *cd_aux; /* additional driver, if any */
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int cd_ndevs; /* size of cd_devs array */
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};
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/*
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* Configuration printing functions, and their return codes. The second
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* argument is NULL if the device was configured; otherwise it is the name
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* of the parent device. The return value is ignored if the device was
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* configured, so most functions can return UNCONF unconditionally.
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*/
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typedef int (*cfprint_t) __P((void *, char *));
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#define QUIET 0 /* print nothing */
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#define UNCONF 1 /* print " not configured\n" */
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#define UNSUPP 2 /* print " not supported\n" */
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/*
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* Pseudo-device attach information (function + number of pseudo-devs).
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*/
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struct pdevinit {
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void (*pdev_attach) __P((int));
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int pdev_count;
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};
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extern struct device *alldevs; /* head of list of all devices */
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extern struct evcnt *allevents; /* head of list of all events */
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struct cfdata *config_search __P((cfmatch_t, struct device *, void *));
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struct cfdata *config_rootsearch __P((cfmatch_t, char *, void *));
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int config_found __P((struct device *, void *, cfprint_t));
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int config_rootfound __P((char *, void *));
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void config_attach __P((struct device *, struct cfdata *, void *, cfprint_t));
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void evcnt_attach __P((struct device *, const char *, struct evcnt *));
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#endif /* !_SYS_DEVICE_H_ */
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