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/types.h> 35 #include <sys/bus.h> 36 37 typedef __uintptr_t devinfo_handle_t; 38 #define DEVINFO_ROOT_DEVICE ((devinfo_handle_t)0) 39 40 typedef enum device_state devinfo_state_t; 41 42 struct devinfo_dev { 43 devinfo_handle_t dd_handle; /* device handle */ 44 devinfo_handle_t dd_parent; /* parent handle */ 45 46 char *dd_name; /* name of device */ 47 char *dd_desc; /* device description */ 48 char *dd_drivername; /* name of attached driver*/ 49 char *dd_pnpinfo; /* pnp info from parent bus */ 50 char *dd_location; /* Where bus thinks dev at */ 51 uint32_t dd_devflags; /* API flags */ 52 uint16_t dd_flags; /* internal dev flags */ 53 devinfo_state_t dd_state; /* attachment state of dev */ 54 }; 55 56 struct devinfo_rman { 57 devinfo_handle_t dm_handle; /* resource manager handle */ 58 59 rman_res_t dm_start; /* resource start */ 60 rman_res_t dm_size; /* resource size */ 61 62 char *dm_desc; /* resource description */ 63 }; 64 65 struct devinfo_res { 66 devinfo_handle_t dr_handle; /* resource handle */ 67 devinfo_handle_t dr_rman; /* resource manager handle */ 68 devinfo_handle_t dr_device; /* owning device */ 69 70 rman_res_t dr_start; /* region start */ 71 rman_res_t dr_size; /* region size */ 72 /* XXX add flags */ 73 }; 74 75 __BEGIN_DECLS 76 77 /* 78 * Acquire a coherent copy of the kernel's device and resource tables. 79 * This must return success (zero) before any other interfaces will 80 * function. Sets errno on failure. 81 */ 82 extern int devinfo_init(void); 83 84 /* 85 * Release the storage associated with the internal copy of the device 86 * and resource tables. devinfo_init must be called before any attempt 87 * is made to use any other interfaces. 88 */ 89 extern void devinfo_free(void); 90 91 /* 92 * Find a device/resource/resource manager by its handle. 93 */ 94 extern struct devinfo_dev 95 *devinfo_handle_to_device(devinfo_handle_t handle); 96 extern struct devinfo_res 97 *devinfo_handle_to_resource(devinfo_handle_t handle); 98 extern struct devinfo_rman 99 *devinfo_handle_to_rman(devinfo_handle_t handle); 100 101 /* 102 * Iterate over the children of a device, calling (fn) on each. If 103 * (fn) returns nonzero, abort the scan and return. 104 */ 105 extern int 106 devinfo_foreach_device_child(struct devinfo_dev *parent, 107 int (* fn)(struct devinfo_dev *child, void *arg), 108 void *arg); 109 110 /* 111 * Iterate over all the resources owned by a device, calling (fn) on each. 112 * If (fn) returns nonzero, abort the scan and return. 113 */ 114 extern int 115 devinfo_foreach_device_resource(struct devinfo_dev *dev, 116 int (* fn)(struct devinfo_dev *dev, 117 struct devinfo_res *res, void *arg), 118 void *arg); 119 120 /* 121 * Iterate over all the resources owned by a resource manager, calling (fn) 122 * on each. If (fn) returns nonzero, abort the scan and return. 123 */ 124 extern int 125 devinfo_foreach_rman_resource(struct devinfo_rman *rman, 126 int (* fn)(struct devinfo_res *res, void *arg), 127 void *arg); 128 129 /* 130 * Iterate over all the resource managers, calling (fn) on each. If (fn) 131 * returns nonzero, abort the scan and return. 132 */ 133 extern int 134 devinfo_foreach_rman(int (* fn)(struct devinfo_rman *rman, void *arg), 135 void *arg); 136 137 __END_DECLS 138 139 #endif /* ! _DEVINFO_H_INCLUDED */ 140