1 /*- 2 * Copyright (c) 1997, 1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 * 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 1.10 2008/09/30 12:20:29 hasso Exp $ 28 */ 29 30 #ifndef _SYS_BUS_PRIVATE_H_ 31 #define _SYS_BUS_PRIVATE_H_ 32 33 #include <sys/sysctl.h> 34 35 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 36 37 #error "This file should not be included by userland programs." 38 39 #else 40 41 #ifndef _SYS_BUS_H_ 42 #include <sys/bus.h> 43 #endif 44 45 /* 46 * Used to attach drivers to devclasses. 47 */ 48 typedef struct driverlink *driverlink_t; 49 struct driverlink { 50 kobj_class_t driver; 51 TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */ 52 }; 53 54 /* 55 * Forward declarations 56 */ 57 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t; 58 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t; 59 typedef TAILQ_HEAD(device_list, bsd_device) device_list_t; 60 61 struct devclass { 62 TAILQ_ENTRY(devclass) link; 63 devclass_t parent; /* parent in devclass hierarchy */ 64 driver_list_t drivers; /* bus devclasses store drivers for bus */ 65 char *name; 66 device_t *devices; /* array of devices indexed by unit */ 67 int maxunit; /* size of devices array */ 68 69 struct sysctl_ctx_list sysctl_ctx; 70 struct sysctl_oid *sysctl_tree; 71 }; 72 73 /* 74 * Resources from config(8). 75 */ 76 typedef enum { 77 RES_INT, RES_STRING, RES_LONG 78 } resource_type; 79 80 struct config_resource { 81 char *name; 82 resource_type type; 83 union { 84 long longval; 85 int intval; 86 char* stringval; 87 } u; 88 }; 89 90 struct config_device { 91 char *name; /* e.g. "lpt", "wdc" etc */ 92 int unit; 93 int resource_count; 94 struct config_resource *resources; 95 }; 96 97 /* 98 * Implementation of device. 99 */ 100 struct bsd_device { 101 /* 102 * A device is a kernel object. The first field must be the 103 * current ops table for the object. 104 */ 105 KOBJ_FIELDS; 106 107 /* 108 * Device hierarchy. 109 */ 110 TAILQ_ENTRY(bsd_device) link; /* list of devices in parent */ 111 TAILQ_ENTRY(bsd_device) devlink; /* global device list membership */ 112 device_t parent; 113 device_list_t children; /* list of subordinate devices */ 114 115 /* 116 * Details of this device. 117 */ 118 driver_t *driver; 119 devclass_t devclass; /* device class which we are in */ 120 int unit; 121 char* nameunit; /* name+unit e.g. foodev0 */ 122 char* desc; /* driver specific description */ 123 int busy; /* count of calls to device_busy() */ 124 device_state_t state; 125 uint32_t devflags; /* api level flags for device_get_flags() */ 126 u_short flags; 127 #define DF_ENABLED 0x0001 /* device should be probed/attached */ 128 #define DF_FIXEDCLASS 0x0002 /* devclass specified at create time */ 129 #define DF_WILDCARD 0x0004 /* unit was originally wildcard */ 130 #define DF_DESCMALLOCED 0x0008 /* description was malloced */ 131 #define DF_QUIET 0x0010 /* don't print verbose attach message */ 132 #define DF_DONENOMATCH 0x0020 /* don't execute DEVICE_NOMATCH again */ 133 #define DF_EXTERNALSOFTC 0x0040 /* softc not allocated by us */ 134 #define DF_ASYNCPROBE 0x0080 /* can be probed with its own thread */ 135 u_char order; /* order from device_add_child_ordered() */ 136 u_char pad; 137 void *ivars; 138 void *softc; 139 140 struct sysctl_ctx_list sysctl_ctx; /**< state for sysctl variables */ 141 struct sysctl_oid *sysctl_tree; /**< state for sysctl variables */ 142 }; 143 144 struct device_op_desc { 145 unsigned int offset; /* offset in driver ops */ 146 struct method* method; /* internal method implementation */ 147 devop_t deflt; /* default implementation */ 148 const char* name; /* unique name (for registration) */ 149 }; 150 151 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 152 #endif /* !_SYS_BUS_PRIVATE_H_ */ 153