2 * Copyright (c) 1997,1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/sys/bus_private.h,v 1.11.2.2 2000/08/03 00:25:22 peter Exp $
27 * $DragonFly: src/sys/sys/bus_private.h,v 1.3 2003/11/17 00:54:40 asmodai Exp $
30 #ifndef _SYS_BUS_PRIVATE_H_
31 #define _SYS_BUS_PRIVATE_H_
36 * Used to attach drivers to devclasses.
38 typedef struct driverlink *driverlink_t;
41 TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */
45 * Forward declarations
47 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
48 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
49 typedef TAILQ_HEAD(device_list, device) device_list_t;
52 TAILQ_ENTRY(devclass) link;
53 driver_list_t drivers; /* bus devclasses store drivers for bus */
55 device_t *devices; /* array of devices indexed by unit */
56 int maxunit; /* size of devices array */
60 * Resources from config(8).
63 RES_INT, RES_STRING, RES_LONG
66 struct config_resource {
76 struct config_device {
77 char *name; /* e.g. "lpt", "wdc" etc */
80 struct config_resource *resources;
84 * Implementation of device.
88 * A device is a kernel object. The first field must be the
89 * current ops table for the object.
96 TAILQ_ENTRY(device) link; /* list of devices in parent */
98 device_list_t children; /* list of subordinate devices */
101 * Details of this device.
104 devclass_t devclass; /* device class which we are in */
106 char* nameunit; /* name+unit e.g. foodev0 */
107 char* desc; /* driver specific description */
108 int busy; /* count of calls to device_busy() */
109 device_state_t state;
110 u_int32_t devflags; /* api level flags for device_get_flags() */
112 #define DF_ENABLED 1 /* device should be probed/attached */
113 #define DF_FIXEDCLASS 2 /* devclass specified at create time */
114 #define DF_WILDCARD 4 /* unit was originally wildcard */
115 #define DF_DESCMALLOCED 8 /* description was malloced */
116 #define DF_QUIET 16 /* don't print verbose attach message */
117 #define DF_DONENOMATCH 32 /* don't execute DEVICE_NOMATCH again */
118 #define DF_EXTERNALSOFTC 64 /* softc not allocated by us */
119 u_char order; /* order from device_add_child_ordered() */
121 #ifdef DEVICE_SYSCTLS
122 struct sysctl_oid oid[4];
123 struct sysctl_oid_list oidlist[1];
129 struct device_op_desc {
130 unsigned int offset; /* offset in driver ops */
131 struct method* method; /* internal method implementation */
132 devop_t deflt; /* default implementation */
133 const char* name; /* unique name (for registration) */
136 #endif /* !_SYS_BUS_PRIVATE_H_ */