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113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/*-
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* Copyright (c) 2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/slicer.h>
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#include <dev/fdt/fdt_common.h>
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#ifdef DEBUG
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#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
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printf(fmt,##args); } while (0)
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#else
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#define debugf(fmt, args...)
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#endif
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int
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flash_fill_slices(device_t dev, struct flash_slice *slices, int *slices_num)
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{
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char *slice_name;
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phandle_t dt_node, dt_child;
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u_long base, size;
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int i;
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ssize_t name_len;
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/*
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* We assume the caller provides buffer for FLASH_SLICES_MAX_NUM
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* flash_slice structures.
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*/
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if (slices == NULL) {
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*slices_num = 0;
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return (ENOMEM);
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}
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dt_node = ofw_bus_get_node(dev);
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for (dt_child = OF_child(dt_node), i = 0; dt_child != 0;
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dt_child = OF_peer(dt_child)) {
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if (i == FLASH_SLICES_MAX_NUM) {
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debugf("not enough buffer for slice i=%d\n", i);
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break;
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}
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/*
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* Retrieve start and size of the slice.
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*/
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if (fdt_regsize(dt_child, &base, &size) != 0) {
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debugf("error during processing reg property, i=%d\n",
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i);
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continue;
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}
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if (size == 0) {
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debugf("slice i=%d with no size\n", i);
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continue;
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}
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/*
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* Retrieve label.
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*/
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name_len = OF_getprop_alloc(dt_child, "label", sizeof(char),
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(void **)&slice_name);
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if (name_len <= 0) {
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/* Use node name if no label defined */
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name_len = OF_getprop_alloc(dt_child, "name", sizeof(char),
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(void **)&slice_name);
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if (name_len <= 0) {
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debugf("slice i=%d with no name\n", i);
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slice_name = NULL;
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}
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}
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/*
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* Fill slice entry data.
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*/
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slices[i].base = base;
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slices[i].size = size;
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slices[i].label = slice_name;
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i++;
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}
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*slices_num = i;
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return (0);
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}
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