1 /* $NetBSD: openfirm.h,v 1.1 1998/05/15 10:16:00 tsubai Exp $ */
4 * SPDX-License-Identifier: (BSD-4-Clause AND BSD-2-Clause-FreeBSD)
6 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
7 * Copyright (C) 1995, 1996 TooLs GmbH.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by TooLs GmbH.
21 * 4. The name of TooLs GmbH may not be used to endorse or promote products
22 * derived from this software without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
29 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
30 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 * Copyright (C) 2000 Benno Rice.
37 * All rights reserved.
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
48 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
49 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
50 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
51 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
53 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
54 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
55 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
56 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
57 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 #ifndef _DEV_OPENFIRM_H_
63 #define _DEV_OPENFIRM_H_
65 #include <sys/types.h>
66 #include <machine/_bus.h>
69 * Prototypes for Open Firmware Interface Routines
72 typedef uint32_t ihandle_t;
73 typedef uint32_t phandle_t;
74 typedef uint32_t pcell_t;
77 #include <sys/malloc.h>
79 #include <machine/ofw_machdep.h>
81 MALLOC_DECLARE(M_OFWPROP);
84 * Open Firmware interface initialization. OF_install installs the named
85 * interface as the Open Firmware access mechanism, OF_init initializes it.
88 boolean_t OF_install(char *name, int prio);
89 int OF_init(void *cookie);
92 * Known Open Firmware interface names
95 #define OFW_STD_DIRECT "ofw_std" /* Standard OF interface */
96 #define OFW_STD_REAL "ofw_real" /* Real-mode OF interface */
97 #define OFW_STD_32BIT "ofw_32bit" /* 32-bit OF interface */
98 #define OFW_FDT "ofw_fdt" /* Flattened Device Tree */
100 /* Generic functions */
101 int OF_test(const char *name);
102 void OF_printf(const char *fmt, ...);
104 /* Device tree functions */
105 phandle_t OF_peer(phandle_t node);
106 phandle_t OF_child(phandle_t node);
107 phandle_t OF_parent(phandle_t node);
108 ssize_t OF_getproplen(phandle_t node, const char *propname);
109 ssize_t OF_getprop(phandle_t node, const char *propname, void *buf,
111 ssize_t OF_getencprop(phandle_t node, const char *prop, pcell_t *buf,
112 size_t len); /* Same as getprop, but maintains endianness */
113 int OF_hasprop(phandle_t node, const char *propname);
114 ssize_t OF_searchprop(phandle_t node, const char *propname, void *buf,
116 ssize_t OF_searchencprop(phandle_t node, const char *propname,
117 pcell_t *buf, size_t len);
118 ssize_t OF_getprop_alloc(phandle_t node, const char *propname,
120 ssize_t OF_getprop_alloc_multi(phandle_t node, const char *propname,
121 int elsz, void **buf);
122 ssize_t OF_getencprop_alloc(phandle_t node, const char *propname,
124 ssize_t OF_getencprop_alloc_multi(phandle_t node, const char *propname,
125 int elsz, void **buf);
126 void OF_prop_free(void *buf);
127 int OF_nextprop(phandle_t node, const char *propname, char *buf,
129 int OF_setprop(phandle_t node, const char *name, const void *buf,
131 ssize_t OF_canon(const char *path, char *buf, size_t len);
132 phandle_t OF_finddevice(const char *path);
133 ssize_t OF_package_to_path(phandle_t node, char *buf, size_t len);
136 * Some OF implementations (IBM, FDT) have a concept of effective phandles
137 * used for device-tree cross-references. Given one of these, returns the
138 * real phandle. If one can't be found (or running on OF implementations
139 * without this property), returns its input.
141 phandle_t OF_node_from_xref(phandle_t xref);
142 phandle_t OF_xref_from_node(phandle_t node);
145 * When properties contain references to other nodes using xref handles it is
146 * often necessary to use interfaces provided by the driver for the referenced
147 * instance. These routines allow a driver that provides such an interface to
148 * register its association with an xref handle, and for other drivers to obtain
149 * the device_t associated with an xref handle.
151 device_t OF_device_from_xref(phandle_t xref);
152 phandle_t OF_xref_from_device(device_t dev);
153 int OF_device_register_xref(phandle_t xref, device_t dev);
155 /* Device I/O functions */
156 ihandle_t OF_open(const char *path);
157 void OF_close(ihandle_t instance);
158 ssize_t OF_read(ihandle_t instance, void *buf, size_t len);
159 ssize_t OF_write(ihandle_t instance, const void *buf, size_t len);
160 int OF_seek(ihandle_t instance, uint64_t where);
162 phandle_t OF_instance_to_package(ihandle_t instance);
163 ssize_t OF_instance_to_path(ihandle_t instance, char *buf, size_t len);
164 int OF_call_method(const char *method, ihandle_t instance,
165 int nargs, int nreturns, ...);
167 /* Memory functions */
168 void *OF_claim(void *virtrequest, size_t size, u_int align);
169 void OF_release(void *virt, size_t size);
171 /* Control transfer functions */
173 void OF_exit(void) __attribute__((noreturn));
175 /* User interface functions */
176 int OF_interpret(const char *cmd, int nreturns, ...);
179 * Decode the Nth register property of the given device node and create a bus
180 * space tag and handle for accessing it. This is for use in setting up things
181 * like early console output before newbus is available.
183 int OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *ptag,
184 bus_space_handle_t *phandle, bus_size_t *sz);
187 #endif /* _DEV_OPENFIRM_H_ */