/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 Semihalf.
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/slicer.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/openfirm.h>
#ifdef DEBUG
#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
printf(fmt,##args); } while (0)
#else
#define debugf(fmt, args...)
#endif
static int fdt_flash_fill_slices(device_t dev, const char *provider,
struct flash_slice *slices, int *slices_num);
static void fdt_slicer_init(void);
static int
fdt_flash_fill_slices(device_t dev, const char *provider __unused,
struct flash_slice *slices, int *slices_num)
{
char *slice_name;
phandle_t dt_node, dt_child;
u_long base, size;
int i;
ssize_t name_len;
/*
* We assume the caller provides buffer for FLASH_SLICES_MAX_NUM
* flash_slice structures.
*/
if (slices == NULL) {
*slices_num = 0;
return (ENOMEM);
}
dt_node = ofw_bus_get_node(dev);
for (dt_child = OF_child(dt_node), i = 0; dt_child != 0;
dt_child = OF_peer(dt_child)) {
if (i == FLASH_SLICES_MAX_NUM) {
debugf("not enough buffer for slice i=%d\n", i);
break;
}
/*
* Retrieve start and size of the slice.
*/
if (fdt_regsize(dt_child, &base, &size) != 0) {
debugf("error during processing reg property, i=%d\n",
i);
continue;
}
if (size == 0) {
debugf("slice i=%d with no size\n", i);
continue;
}
/*
* Retrieve label.
*/
name_len = OF_getprop_alloc(dt_child, "label", sizeof(char),
(void **)&slice_name);
if (name_len <= 0) {
/* Use node name if no label defined */
name_len = OF_getprop_alloc(dt_child, "name",
sizeof(char), (void **)&slice_name);
if (name_len <= 0) {
debugf("slice i=%d with no name\n", i);
slice_name = NULL;
}
}
/*
* Fill slice entry data.
*/
slices[i].base = base;
slices[i].size = size;
slices[i].label = slice_name;
i++;
}
*slices_num = i;
return (0);
}
static void
fdt_slicer_init(void)
{
flash_register_slicer(fdt_flash_fill_slices, FLASH_SLICES_TYPE_NAND,
FALSE);
flash_register_slicer(fdt_flash_fill_slices, FLASH_SLICES_TYPE_CFI,
FALSE);
flash_register_slicer(fdt_flash_fill_slices, FLASH_SLICES_TYPE_SPI,
FALSE);
}
/*
* Must be initialized after GEOM classes (SI_SUB_DRIVERS/SI_ORDER_FIRST),
* i. e. after g_init() is called, due to the use of the GEOM topology_lock
* in flash_register_slicer(). However, must be before SI_SUB_CONFIGURE.
*/
SYSINIT(fdt_slicer_rootconf, SI_SUB_DRIVERS, SI_ORDER_SECOND, fdt_slicer_init,
NULL);
