9a8bcabd8a
Add test infrastructure and tests for the AXI uclass. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Mario Six <mario.six@gdsys.cc>
78 lines
1.9 KiB
C
78 lines
1.9 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 <asm/axi.h>
|
|
|
|
/*
|
|
* This driver implements a AXI bus for the sandbox architecture for testing
|
|
* purposes.
|
|
*
|
|
* The bus forwards every access to it to a special AXI emulation device (which
|
|
* it gets via the axi_emul_get_ops function) that implements a simple
|
|
* read/write storage.
|
|
*
|
|
* The emulator device must still be contained in the device tree in the usual
|
|
* way, since configuration data for the storage is read from the DT.
|
|
*/
|
|
|
|
static int axi_sandbox_read(struct udevice *bus, ulong address, void *data,
|
|
enum axi_size_t size)
|
|
{
|
|
struct axi_emul_ops *ops;
|
|
struct udevice *emul;
|
|
int ret;
|
|
|
|
/* Get emulator device */
|
|
ret = axi_sandbox_get_emul(bus, address, size, &emul);
|
|
if (ret)
|
|
return ret == -ENODEV ? 0 : ret;
|
|
/* Forward all reads to the AXI emulator */
|
|
ops = axi_emul_get_ops(emul);
|
|
if (!ops || !ops->read)
|
|
return -ENOSYS;
|
|
|
|
return ops->read(emul, address, data, size);
|
|
}
|
|
|
|
static int axi_sandbox_write(struct udevice *bus, ulong address, void *data,
|
|
enum axi_size_t size)
|
|
{
|
|
struct axi_emul_ops *ops;
|
|
struct udevice *emul;
|
|
int ret;
|
|
|
|
/* Get emulator device */
|
|
ret = axi_sandbox_get_emul(bus, address, size, &emul);
|
|
if (ret)
|
|
return ret == -ENODEV ? 0 : ret;
|
|
/* Forward all writes to the AXI emulator */
|
|
ops = axi_emul_get_ops(emul);
|
|
if (!ops || !ops->write)
|
|
return -ENOSYS;
|
|
|
|
return ops->write(emul, address, data, size);
|
|
}
|
|
|
|
static const struct udevice_id axi_sandbox_ids[] = {
|
|
{ .compatible = "sandbox,axi" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static const struct axi_ops axi_sandbox_ops = {
|
|
.read = axi_sandbox_read,
|
|
.write = axi_sandbox_write,
|
|
};
|
|
|
|
U_BOOT_DRIVER(axi_sandbox_bus) = {
|
|
.name = "axi_sandbox_bus",
|
|
.id = UCLASS_AXI,
|
|
.of_match = axi_sandbox_ids,
|
|
.ops = &axi_sandbox_ops,
|
|
};
|