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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Henrik Nordstrom <henrik@henriknordstrom.net>
*/
#include <blk.h>
#include <dm.h>
#include <fdtdec.h>
#include <part.h>
#include <os.h>
#include <malloc.h>
#include <sandbox_host.h>
#include <asm/global_data.h>
#include <dm/device_compat.h>
#include <dm/device-internal.h>
#include <linux/errno.h>
DECLARE_GLOBAL_DATA_PTR;
static unsigned long host_block_read(struct udevice *dev,
unsigned long start, lbaint_t blkcnt,
void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
struct udevice *host_dev = dev_get_parent(dev);
struct host_sb_plat *plat = dev_get_plat(host_dev);
if (os_lseek(plat->fd, start * desc->blksz, OS_SEEK_SET) == -1) {
printf("ERROR: Invalid block %lx\n", start);
return -1;
}
ssize_t len = os_read(plat->fd, buffer, blkcnt * desc->blksz);
if (len >= 0)
return len / desc->blksz;
return -EIO;
}
static unsigned long host_block_write(struct udevice *dev,
unsigned long start, lbaint_t blkcnt,
const void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
struct udevice *host_dev = dev_get_parent(dev);
struct host_sb_plat *plat = dev_get_plat(host_dev);
if (os_lseek(plat->fd, start * desc->blksz, OS_SEEK_SET) == -1) {
printf("ERROR: Invalid block %lx\n", start);
return -1;
}
ssize_t len = os_write(plat->fd, buffer, blkcnt * desc->blksz);
if (len >= 0)
return len / desc->blksz;
return -EIO;
}
static const struct blk_ops sandbox_host_blk_ops = {
.read = host_block_read,
.write = host_block_write,
};
U_BOOT_DRIVER(sandbox_host_blk) = {
.name = "sandbox_host_blk",
.id = UCLASS_BLK,
.ops = &sandbox_host_blk_ops,
};
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