diff options
Diffstat (limited to 'test/dm/bus.c')
| -rw-r--r-- | test/dm/bus.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/test/dm/bus.c b/test/dm/bus.c new file mode 100644 index 0000000000..873d64e42a --- /dev/null +++ b/test/dm/bus.c @@ -0,0 +1,242 @@ +/* + * 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); |