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
29 #ifndef _SYS_BUS_PRIVATE_H_
30 #define _SYS_BUS_PRIVATE_H_
35 * Used to attach drivers to devclasses.
37 typedef struct driverlink *driverlink_t;
40 TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */
44 * Forward declarations
46 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
47 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
48 typedef TAILQ_HEAD(device_list, device) device_list_t;
51 TAILQ_ENTRY(devclass) link;
52 driver_list_t drivers; /* bus devclasses store drivers for bus */
54 device_t *devices; /* array of devices indexed by unit */
55 int maxunit; /* size of devices array */
59 * Implementation of device.
63 * A device is a kernel object. The first field must be the
64 * current ops table for the object.
71 TAILQ_ENTRY(device) link; /* list of devices in parent */
72 TAILQ_ENTRY(device) devlink; /* global device list membership */
74 device_list_t children; /* list of subordinate devices */
77 * Details of this device.
80 devclass_t devclass; /* device class which we are in */
82 char* nameunit; /* name+unit e.g. foodev0 */
83 char* desc; /* driver specific description */
84 int busy; /* count of calls to device_busy() */
86 u_int32_t devflags; /* api level flags for device_get_flags() */
88 #define DF_ENABLED 1 /* device should be probed/attached */
89 #define DF_FIXEDCLASS 2 /* devclass specified at create time */
90 #define DF_WILDCARD 4 /* unit was originally wildcard */
91 #define DF_DESCMALLOCED 8 /* description was malloced */
92 #define DF_QUIET 16 /* don't print verbose attach message */
93 #define DF_DONENOMATCH 32 /* don't execute DEVICE_NOMATCH again */
94 #define DF_EXTERNALSOFTC 64 /* softc not allocated by us */
95 u_char order; /* order from device_add_child_ordered() */
101 struct device_op_desc {
102 unsigned int offset; /* offset in driver ops */
103 struct method* method; /* internal method implementation */
104 devop_t deflt; /* default implementation */
105 const char* name; /* unique name (for registration) */
108 #endif /* !_SYS_BUS_PRIVATE_H_ */