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 1.2 2003/06/17 04:28:58 dillon 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 * Compiled device methods.
92 * Helpers for device method wrappers.
94 #define DEVOPDESC(OP) (&OP##_##desc)
96 #define DEVOPS(DEV) (DEV->ops)
97 #define DEVOPMETH(DEV, OP) \
98 ((DEVOPDESC(OP)->offset >= DEVOPS(DEV)->maxoffset) \
99 ? DEVOPDESC(OP)->deflt \
100 : DEVOPS(DEV)->methods[DEVOPDESC(OP)->offset])
102 #define DRVOPS(DRV) ((struct device_ops *)DRV->ops)
103 #define DRVOPMETH(DRV, OP) \
104 ((DEVOPDESC(OP)->offset >= DRVOPS(DRV)->maxoffset) \
105 ? DEVOPDESC(OP)->deflt \
106 : DRVOPS(DRV)->methods[DEVOPDESC(OP)->offset])
109 * Implementation of device.
115 TAILQ_ENTRY(device) link; /* list of devices in parent */
117 device_list_t children; /* list of subordinate devices */
120 * Details of this device.
124 devclass_t devclass; /* device class which we are in */
126 char* nameunit; /* name+unit e.g. foodev0 */
127 char* desc; /* driver specific description */
128 int busy; /* count of calls to device_busy() */
129 device_state_t state;
130 u_int32_t devflags; /* api level flags for device_get_flags() */
132 #define DF_ENABLED 1 /* device should be probed/attached */
133 #define DF_FIXEDCLASS 2 /* devclass specified at create time */
134 #define DF_WILDCARD 4 /* unit was originally wildcard */
135 #define DF_DESCMALLOCED 8 /* description was malloced */
136 #define DF_QUIET 16 /* don't print verbose attach message */
137 #define DF_DONENOMATCH 32 /* don't execute DEVICE_NOMATCH again */
138 #define DF_EXTERNALSOFTC 64 /* softc not allocated by us */
139 u_char order; /* order from device_add_child_ordered() */
141 #ifdef DEVICE_SYSCTLS
142 struct sysctl_oid oid[4];
143 struct sysctl_oid_list oidlist[1];
149 struct device_op_desc {
150 unsigned int offset; /* offset in driver ops */
151 struct method* method; /* internal method implementation */
152 devop_t deflt; /* default implementation */
153 const char* name; /* unique name (for registration) */
156 #endif /* !_SYS_BUS_PRIVATE_H_ */