1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _DEVINFO_H_INCLUDED 31 #define _DEVINFO_H_INCLUDED 32 33 #include <sys/cdefs.h> 34 #include <sys/param.h> 35 #include <sys/types.h> 36 #include <sys/bus.h> 37 38 typedef __uintptr_t devinfo_handle_t; 39 #define DEVINFO_ROOT_DEVICE ((devinfo_handle_t)0) 40 41 typedef enum device_state devinfo_state_t; 42 43 struct devinfo_dev { 44 devinfo_handle_t dd_handle; /* device handle */ 45 devinfo_handle_t dd_parent; /* parent handle */ 46 47 char *dd_name; /* name of device */ 48 char *dd_desc; /* device description */ 49 char *dd_drivername; /* name of attached driver*/ 50 char *dd_pnpinfo; /* pnp info from parent bus */ 51 char *dd_location; /* Where bus thinks dev at */ 52 uint32_t dd_devflags; /* API flags */ 53 uint16_t dd_flags; /* internal dev flags */ 54 devinfo_state_t dd_state; /* attachment state of dev */ 55 }; 56 57 struct devinfo_rman { 58 devinfo_handle_t dm_handle; /* resource manager handle */ 59 60 unsigned long dm_start; /* resource start */ 61 unsigned long dm_size; /* resource size */ 62 63 char *dm_desc; /* resource description */ 64 }; 65 66 struct devinfo_res { 67 devinfo_handle_t dr_handle; /* resource handle */ 68 devinfo_handle_t dr_rman; /* resource manager handle */ 69 devinfo_handle_t dr_device; /* owning device */ 70 71 unsigned long dr_start; /* region start */ 72 unsigned long dr_size; /* region size */ 73 /* XXX add flags */ 74 }; 75 76 __BEGIN_DECLS 77 78 /* 79 * Acquire a coherent copy of the kernel's device and resource tables. 80 * This must return success (zero) before any other interfaces will 81 * function. Sets errno on failure. 82 */ 83 extern int devinfo_init(void); 84 85 /* 86 * Release the storage associated with the internal copy of the device 87 * and resource tables. devinfo_init must be called before any attempt 88 * is made to use any other interfaces. 89 */ 90 extern void devinfo_free(void); 91 92 /* 93 * Find a device/resource/resource manager by its handle. 94 */ 95 extern struct devinfo_dev 96 *devinfo_handle_to_device(devinfo_handle_t handle); 97 extern struct devinfo_res 98 *devinfo_handle_to_resource(devinfo_handle_t handle); 99 extern struct devinfo_rman 100 *devinfo_handle_to_rman(devinfo_handle_t handle); 101 102 /* 103 * Iterate over the children of a device, calling (fn) on each. If 104 * (fn) returns nonzero, abort the scan and return. 105 */ 106 extern int 107 devinfo_foreach_device_child(struct devinfo_dev *parent, 108 int (* fn)(struct devinfo_dev *child, void *arg), 109 void *arg); 110 111 /* 112 * Iterate over all the resources owned by a device, calling (fn) on each. 113 * If (fn) returns nonzero, abort the scan and return. 114 */ 115 extern int 116 devinfo_foreach_device_resource(struct devinfo_dev *dev, 117 int (* fn)(struct devinfo_dev *dev, 118 struct devinfo_res *res, void *arg), 119 void *arg); 120 121 /* 122 * Iterate over all the resources owned by a resource manager, calling (fn) 123 * on each. If (fn) returns nonzero, abort the scan and return. 124 */ 125 extern int 126 devinfo_foreach_rman_resource(struct devinfo_rman *rman, 127 int (* fn)(struct devinfo_res *res, void *arg), 128 void *arg); 129 130 /* 131 * Iterate over all the resource managers, calling (fn) on each. If (fn) 132 * returns nonzero, abort the scan and return. 133 */ 134 extern int 135 devinfo_foreach_rman(int (* fn)(struct devinfo_rman *rman, void *arg), 136 void *arg); 137 138 __END_DECLS 139 140 #endif /* ! _DEVINFO_H_INCLUDED */ 141