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 1.3 2003/11/17 00:54:40 asmodai Exp $ 28 */ 29 30 #ifndef _SYS_BUS_PRIVATE_H_ 31 #define _SYS_BUS_PRIVATE_H_ 32 33 #include <sys/bus.h> 34 35 /* 36 * Used to attach drivers to devclasses. 37 */ 38 typedef struct driverlink *driverlink_t; 39 struct driverlink { 40 driver_t *driver; 41 TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */ 42 }; 43 44 /* 45 * Forward declarations 46 */ 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; 50 51 struct devclass { 52 TAILQ_ENTRY(devclass) link; 53 driver_list_t drivers; /* bus devclasses store drivers for bus */ 54 char *name; 55 device_t *devices; /* array of devices indexed by unit */ 56 int maxunit; /* size of devices array */ 57 }; 58 59 /* 60 * Resources from config(8). 61 */ 62 typedef enum { 63 RES_INT, RES_STRING, RES_LONG 64 } resource_type; 65 66 struct config_resource { 67 char *name; 68 resource_type type; 69 union { 70 long longval; 71 int intval; 72 char* stringval; 73 } u; 74 }; 75 76 struct config_device { 77 char *name; /* e.g. "lpt", "wdc" etc */ 78 int unit; 79 int resource_count; 80 struct config_resource *resources; 81 }; 82 83 /* 84 * Implementation of device. 85 */ 86 struct device { 87 /* 88 * A device is a kernel object. The first field must be the 89 * current ops table for the object. 90 */ 91 KOBJ_FIELDS; 92 93 /* 94 * Device hierarchy. 95 */ 96 TAILQ_ENTRY(device) link; /* list of devices in parent */ 97 device_t parent; 98 device_list_t children; /* list of subordinate devices */ 99 100 /* 101 * Details of this device. 102 */ 103 driver_t *driver; 104 devclass_t devclass; /* device class which we are in */ 105 int unit; 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() */ 111 u_short 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() */ 120 u_char pad; 121 #ifdef DEVICE_SYSCTLS 122 struct sysctl_oid oid[4]; 123 struct sysctl_oid_list oidlist[1]; 124 #endif 125 void *ivars; 126 void *softc; 127 }; 128 129 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) */ 134 }; 135 136 #endif /* !_SYS_BUS_PRIVATE_H_ */ 137