xref: /freebsd/sys/dev/ofw/ofw_bus_subr.h (revision 325151a3)
1 /*-
2  * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>
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  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in
13  *    the documentation and/or other materials provided with the
14  *    distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #ifndef	_DEV_OFW_OFW_BUS_SUBR_H_
32 #define	_DEV_OFW_OFW_BUS_SUBR_H_
33 
34 #include <sys/bus.h>
35 
36 #include <dev/ofw/openfirm.h>
37 
38 #include "ofw_bus_if.h"
39 
40 #define	ORIP_NOINT	-1
41 #define	ORIR_NOTFOUND	0xffffffff
42 
43 struct ofw_bus_iinfo {
44 	uint8_t			*opi_imap;
45 	uint8_t			*opi_imapmsk;
46 	int			opi_imapsz;
47 	pcell_t			opi_addrc;
48 };
49 
50 struct ofw_compat_data {
51 	const char	*ocd_str;
52 	uintptr_t	 ocd_data;
53 };
54 
55 /* Generic implementation of ofw_bus_if.m methods and helper routines */
56 int	ofw_bus_gen_setup_devinfo(struct ofw_bus_devinfo *, phandle_t);
57 void	ofw_bus_gen_destroy_devinfo(struct ofw_bus_devinfo *);
58 
59 ofw_bus_get_compat_t	ofw_bus_gen_get_compat;
60 ofw_bus_get_model_t	ofw_bus_gen_get_model;
61 ofw_bus_get_name_t	ofw_bus_gen_get_name;
62 ofw_bus_get_node_t	ofw_bus_gen_get_node;
63 ofw_bus_get_type_t	ofw_bus_gen_get_type;
64 
65 /* Helper method to report interesting OF properties in pnpinfo */
66 bus_child_pnpinfo_str_t	ofw_bus_gen_child_pnpinfo_str;
67 
68 /* Routines for processing firmware interrupt maps */
69 void	ofw_bus_setup_iinfo(phandle_t, struct ofw_bus_iinfo *, int);
70 int	ofw_bus_lookup_imap(phandle_t, struct ofw_bus_iinfo *, void *, int,
71 	    void *, int, void *, int, phandle_t *);
72 int	ofw_bus_search_intrmap(void *, int, void *, int, void *, int, void *,
73 	    void *, void *, int, phandle_t *);
74 
75 /* Routines for parsing device-tree data into resource lists. */
76 int ofw_bus_reg_to_rl(device_t, phandle_t, pcell_t, pcell_t,
77     struct resource_list *);
78 int ofw_bus_intr_to_rl(device_t, phandle_t, struct resource_list *, int *);
79 
80 /* Helper to get device status property */
81 const char *ofw_bus_get_status(device_t dev);
82 int ofw_bus_status_okay(device_t dev);
83 
84 /* Helper to get node's interrupt parent */
85 void	ofw_bus_find_iparent(phandle_t);
86 
87 /* Helper routine for checking compat prop */
88 int ofw_bus_is_compatible(device_t, const char *);
89 int ofw_bus_is_compatible_strict(device_t, const char *);
90 
91 /*
92  * Helper routine to search a list of compat properties.  The table is
93  * terminated by an entry with a NULL compat-string pointer; a pointer to that
94  * table entry is returned if none of the compat strings match for the device,
95  * giving you control over the not-found value.  Will not return NULL unless the
96  * provided table pointer is NULL.
97  */
98 const struct ofw_compat_data *
99     ofw_bus_search_compatible(device_t, const struct ofw_compat_data *);
100 
101 /* Helper routine for checking existence of a prop */
102 int ofw_bus_has_prop(device_t, const char *);
103 
104 /* Helper to search for a child with a given compat prop */
105 phandle_t ofw_bus_find_compatible(phandle_t, const char *);
106 
107 /* Helper to search for a child with a given name */
108 phandle_t ofw_bus_find_child(phandle_t, const char *);
109 
110 /* Helper routine to find a device_t child matchig a given phandle_t */
111 device_t ofw_bus_find_child_device_by_phandle(device_t bus, phandle_t node);
112 
113 #endif /* !_DEV_OFW_OFW_BUS_SUBR_H_ */
114