/*-
* Copyright (c) 1998, 2021 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* int of_network_decode_media(phandle, nmediap, defmediap)
*
* This routine decodes the OFW properties `supported-network-types'
* and `chosen-network-type'.
*
* Arguments:
* phandle OFW phandle of device whos network media properties
* are to be decoded.
* nmediap Pointer to an integer which will be initialized
* with the number of returned media words.
* defmediap Pointer to an integer which will be initialized
* with the default network media.
*
* Return Values:
* An array of integers, allocated with malloc(), containing the
* decoded media values. The number of elements in the array will
* be stored in the location pointed to by the `nmediap' argument.
* The default media will be stored in the location pointed to by
* the `defmediap' argument.
*
* Side Effects:
* None.
*/
int *
of_network_decode_media(int phandle, int *nmediap, int *defmediap)
{
const struct device_compatible_entry *dce;
int nmedia, len, *rv = NULL;
char *sl = NULL;
const char *cp;
size_t cursor;
unsigned int count;
len = OF_getproplen(phandle, "supported-network-types");
if (len <= 0)
return (NULL);
sl = malloc(len, M_TEMP, M_WAITOK);
/* `supported-network-types' should not change. */
if (OF_getprop(phandle, "supported-network-types", sl, len) != len)
goto bad;
count = strlist_count(sl, len);
if (count == 0)
goto bad;
/* Allocate the return value array. */
rv = malloc(count * sizeof(int), M_DEVBUF, M_WAITOK);
/* Parse each media string. */
for (nmedia = 0, cursor = 0;
(cp = strlist_next(sl, len, &cursor)) != NULL; ) {
dce = device_compatible_lookup(&cp, 1, media_compat);
if (dce != NULL) {
rv[nmedia++] = (int)dce->value;
}
}
/* Sanity... */
if (nmedia == 0)
goto bad;
free(sl, M_TEMP);
sl = NULL;
/*
* We now have the `supported-media-types' property decoded.
* Next step is to decode the `chosen-media-type' property,
* if it exists.
*/
*defmediap = -1;
len = OF_getproplen(phandle, "chosen-network-type");
if (len <= 0) {
/* Property does not exist. */
*defmediap = -1;
goto done;
}
