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/*
* Copyright (c) 2014 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/ut.h>
#include <dm/util.h>
DECLARE_GLOBAL_DATA_PTR;
enum {
FLAG_CHILD_PROBED = 10,
FLAG_CHILD_REMOVED = -7,
};
static struct dm_test_state *test_state;
static int testbus_drv_probe(struct udevice *dev)
{
return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
}
static int testbus_child_pre_probe(struct udevice *dev)
{
struct dm_test_parent_data *parent_data = dev_get_parentdata(dev);
parent_data->flag += FLAG_CHILD_PROBED;
return 0;
}
static int testbus_child_post_remove(struct udevice *dev)
{
struct dm_test_parent_data *parent_data = dev_get_parentdata(dev);
struct dm_test_state *dms = test_state;
parent_data->flag += FLAG_CHILD_REMOVED;
if (dms)
dms->removed = dev;
return 0;
}
static const struct udevice_id testbus_ids[] = {
{
.compatible = "denx,u-boot-test-bus",
.data = DM_TEST_TYPE_FIRST },
{ }
};
U_BOOT_DRIVER(testbus_drv) = {
.name = "testbus_drv",
.of_match = testbus_ids,
.id = UCLASS_TEST_BUS,
.probe = testbus_drv_probe,
.priv_auto_alloc_size = sizeof(struct dm_test_priv),
.platdata_auto_alloc_size = sizeof(struct dm_test_pdata),
.per_child_auto_alloc_size = sizeof(struct dm_test_parent_data),
.child_pre_probe = testbus_child_pre_probe,
.child_post_remove = testbus_child_post_remove,
};
UCLASS_DRIVER(testbus) = {
.name = "testbus",
.id = UCLASS_TEST_BUS,
};
/* Test that we can probe for children */
static int dm_test_bus_children(struct dm_test_state *dms)
{
int num_devices = 4;
struct udevice *bus;
struct uclass *uc;
ut_assertok(uclass_get(UCLASS_TEST_FDT, &uc));
ut_asserteq(num_devices, list_count_items(&uc->dev_head));
/* Probe the bus, which should yield 3 more devices */
ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
num_devices += 3;
ut_assertok(uclass_get(UCLASS_TEST_FDT, &uc));
ut_asserteq(num_devices, list_count_items(&uc->dev_head));
ut_assert(!dm_check_devices(dms, num_devices));
return 0;
}
DM_TEST(dm_test_bus_children, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test our functions for accessing children */
static int dm_test_bus_children_funcs(struct dm_test_state *dms)
{
const void *blob = gd->fdt_blob;
struct udevice *bus, *dev;
int node;
ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
/* device_get_child() */
ut_assertok(device_get_child(bus, 0, &dev));
ut_asserteq(-ENODEV, device_get_child(bus, 4, &dev));
ut_assertok(device_get_child_by_seq(bus, 5, &dev));
ut_assert(dev->flags & DM_FLAG_ACTIVATED);
ut_asserteq_str("c-test@5", dev->name);
/* Device with sequence number 0 should be accessible */
ut_asserteq(-ENODEV, device_find_child_by_seq(bus, -1, true, &dev));
ut_assertok(device_find_child_by_seq(bus, 0, true, &dev));
ut_assert(!(dev->flags & DM_FLAG_ACTIVATED));
ut_asserteq(-ENODEV, device_find_child_by_seq(bus, 0, false, &dev));
ut_assertok(device_get_child_by_seq(bus, 0, &dev));
ut_assert(dev->flags & DM_FLAG_ACTIVATED);
/* There is no device with sequence number 2 */
ut_asserteq(-ENODEV, device_find_child_by_seq(bus, 2, false, &dev));
ut_asserteq(-ENODEV, device_find_child_by_seq(bus, 2, true, &dev));
ut_asserteq(-ENODEV, device_get_child_by_seq(bus, 2, &dev));
/* Looking for something that is not a child */
node = fdt_path_offset(blob, "/junk");
ut_asserteq(-ENODEV, device_find_child_by_of_offset(bus, node, &dev));
node = fdt_path_offset(blob, "/d-test");
ut_asserteq(-ENODEV, device_find_child_by_of_offset(bus, node, &dev));
/* Find a valid child */
node = fdt_path_offset(blob, "/some-bus/c-test@1");
ut_assertok(device_find_child_by_of_offset(bus, node, &dev));
ut_assert(!(dev->flags & DM_FLAG_ACTIVATED));
ut_assertok(device_get_child_by_of_offset(bus, node, &dev));
ut_assert(dev->flags & DM_FLAG_ACTIVATED);
return 0;
}
DM_TEST(dm_test_bus_children_funcs, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that the bus can store data about each child */
static int dm_test_bus_parent_data(struct dm_test_state *dms)
{
struct dm_test_parent_data *parent_data;
struct udevice *bus, *dev;
struct uclass *uc;
int value;
ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
/* Check that parent data is allocated */
ut_assertok(device_find_child_by_seq(bus, 0, true, &dev));
ut_asserteq_ptr(NULL, dev_get_parentdata(dev));
ut_assertok(device_get_child_by_seq(bus, 0, &dev));
parent_data = dev_get_parentdata(dev);
ut_assert(NULL != parent_data);
/* Check that it starts at 0 and goes away when device is removed */
parent_data->sum += 5;
ut_asserteq(5, parent_data->sum);
device_remove(dev);
ut_asserteq_ptr(NULL, dev_get_parentdata(dev));
/* Check that we can do this twice */
ut_assertok(device_get_child_by_seq(bus, 0, &dev));
parent_data = dev_get_parentdata(dev);
ut_assert(NULL != parent_data);
parent_data->sum += 5;
ut_asserteq(5, parent_data->sum);
/* Add parent data to all children */
ut_assertok(uclass_get(UCLASS_TEST_FDT, &uc));
value = 5;
uclass_foreach_dev(dev, uc) {
/* Ignore these if they are not on this bus */
if (dev->parent != bus) {
ut_asserteq_ptr(NULL, dev_get_parentdata(dev));
continue;
}
ut_assertok(device_probe(dev));
parent_data = dev_get_parentdata(dev);
parent_data->sum = value;
value += 5;
}
/* Check it is still there */
value = 5;
uclass_foreach_dev(dev, uc) {
/* Ignore these if they are not on this bus */
if (dev->parent != bus)
continue;
parent_data = dev_get_parentdata(dev);
ut_asserteq(value, parent_data->sum);
value += 5;
}
return 0;
}
DM_TEST(dm_test_bus_parent_data, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that the bus ops are called when a child is probed/removed */
static int dm_test_bus_parent_ops(struct dm_test_state *dms)
{
struct dm_test_parent_data *parent_data;
struct udevice *bus, *dev;
struct uclass *uc;
test_state = dms;
ut_assertok(uclass_get_device(UCLASS_TEST_BUS, 0, &bus));
ut_assertok(uclass_get(UCLASS_TEST_FDT, &uc));
uclass_foreach_dev(dev, uc) {
/* Ignore these if they are not on this bus */
if (dev->parent != bus)
continue;
ut_asserteq_ptr(NULL, dev_get_parentdata(dev));
ut_assertok(device_probe(dev));
parent_data = dev_get_parentdata(dev);
ut_asserteq(FLAG_CHILD_PROBED, parent_data->flag);
}
uclass_foreach_dev(dev, uc) {
/* Ignore these if they are not on this bus */
if (dev->parent != bus)
continue;
parent_data = dev_get_parentdata(dev);
ut_asserteq(FLAG_CHILD_PROBED, parent_data->flag);
ut_assertok(device_remove(dev));
ut_asserteq_ptr(NULL, dev_get_parentdata(dev));
ut_asserteq_ptr(dms->removed, dev);
}
test_state = NULL;
return 0;
}
DM_TEST(dm_test_bus_parent_ops, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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