u-boot/drivers/smem/smem-uclass.c
Ramon Fried 7b384eccc7 dm: SMEM (Shared memory) uclass
This is a uclass for Shared memory manager drivers.

A Shared Memory Manager driver implements an interface for allocating
and accessing items in the memory area shared among all of the
processors.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2018-07-19 16:31:37 -04:00

45 lines
846 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2018 Ramon Fried <ramon.fried@gmail.com>
*/
#include <common.h>
#include <dm.h>
#include <smem.h>
int smem_alloc(struct udevice *dev, unsigned int host,
unsigned int item, size_t size)
{
struct smem_ops *ops = smem_get_ops(dev);
if (!ops->alloc)
return -ENOSYS;
return ops->alloc(host, item, size);
}
void *smem_get(struct udevice *dev, unsigned int host,
unsigned int item, size_t *size)
{
struct smem_ops *ops = smem_get_ops(dev);
if (!ops->get)
return NULL;
return ops->get(host, item, size);
}
int smem_get_free_space(struct udevice *dev, unsigned int host)
{
struct smem_ops *ops = smem_get_ops(dev);
if (!ops->get_free_space)
return -ENOSYS;
return ops->get_free_space(host);
}
UCLASS_DRIVER(smem) = {
.id = UCLASS_SMEM,
.name = "smem",
};