336d4615f8
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2018
|
|
* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <axi.h>
|
|
#include <dm.h>
|
|
#include <malloc.h>
|
|
|
|
/**
|
|
* struct sandbox_store_priv - Private data structure of a AXI store device
|
|
* @store: The buffer holding the device's internal memory, which is read from
|
|
* and written to using the driver's methods
|
|
*/
|
|
struct sandbox_store_priv {
|
|
u8 *store;
|
|
};
|
|
|
|
/**
|
|
* copy_axi_data() - Copy data from source to destination with a given AXI
|
|
* transfer width
|
|
* @src: Pointer to the data source from where data will be read
|
|
* @dst: Pointer to the data destination where data will be written to
|
|
* @size: Size of the data to be copied given by a axi_size_t enum value
|
|
*
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
static int copy_axi_data(void *src, void *dst, enum axi_size_t size)
|
|
{
|
|
switch (size) {
|
|
case AXI_SIZE_8:
|
|
*((u8 *)dst) = *((u8 *)src);
|
|
return 0;
|
|
case AXI_SIZE_16:
|
|
*((u16 *)dst) = be16_to_cpu(*((u16 *)src));
|
|
return 0;
|
|
case AXI_SIZE_32:
|
|
*((u32 *)dst) = be32_to_cpu(*((u32 *)src));
|
|
return 0;
|
|
default:
|
|
debug("%s: Unknown AXI transfer size '%d'\n", __func__, size);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int sandbox_store_read(struct udevice *dev, ulong address, void *data,
|
|
enum axi_size_t size)
|
|
{
|
|
struct sandbox_store_priv *priv = dev_get_priv(dev);
|
|
|
|
return copy_axi_data(priv->store + address, data, size);
|
|
}
|
|
|
|
static int sandbox_store_write(struct udevice *dev, ulong address, void *data,
|
|
enum axi_size_t size)
|
|
{
|
|
struct sandbox_store_priv *priv = dev_get_priv(dev);
|
|
|
|
return copy_axi_data(data, priv->store + address, size);
|
|
}
|
|
|
|
static int sandbox_store_get_store(struct udevice *dev, u8 **store)
|
|
{
|
|
struct sandbox_store_priv *priv = dev_get_priv(dev);
|
|
|
|
*store = priv->store;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id sandbox_store_ids[] = {
|
|
{ .compatible = "sandbox,sandbox_store" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static const struct axi_emul_ops sandbox_store_ops = {
|
|
.read = sandbox_store_read,
|
|
.write = sandbox_store_write,
|
|
.get_store = sandbox_store_get_store,
|
|
};
|
|
|
|
static int sandbox_store_probe(struct udevice *dev)
|
|
{
|
|
struct sandbox_store_priv *priv = dev_get_priv(dev);
|
|
u32 reg[2];
|
|
int ret;
|
|
|
|
ret = dev_read_u32_array(dev, "reg", reg, ARRAY_SIZE(reg));
|
|
if (ret) {
|
|
debug("%s: Could not read 'reg' property\n", dev->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Allocate the device's internal storage that will be read
|
|
* from/written to
|
|
*/
|
|
priv->store = calloc(reg[1], 1);
|
|
if (!priv->store)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_store_remove(struct udevice *dev)
|
|
{
|
|
struct sandbox_store_priv *priv = dev_get_priv(dev);
|
|
|
|
free(priv->store);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(sandbox_axi_store) = {
|
|
.name = "sandbox_axi_store",
|
|
.id = UCLASS_AXI_EMUL,
|
|
.of_match = sandbox_store_ids,
|
|
.ops = &sandbox_store_ops,
|
|
.priv_auto_alloc_size = sizeof(struct sandbox_store_priv),
|
|
.probe = sandbox_store_probe,
|
|
.remove = sandbox_store_remove,
|
|
};
|