From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/base/test/.kunitconfig | 2 + drivers/base/test/Kconfig | 19 ++ drivers/base/test/Makefile | 8 + drivers/base/test/platform-device-test.c | 224 ++++++++++++ drivers/base/test/property-entry-test.c | 508 ++++++++++++++++++++++++++++ drivers/base/test/root-device-test.c | 112 ++++++ drivers/base/test/test_async_driver_probe.c | 299 ++++++++++++++++ 7 files changed, 1172 insertions(+) create mode 100644 drivers/base/test/.kunitconfig create mode 100644 drivers/base/test/Kconfig create mode 100644 drivers/base/test/Makefile create mode 100644 drivers/base/test/platform-device-test.c create mode 100644 drivers/base/test/property-entry-test.c create mode 100644 drivers/base/test/root-device-test.c create mode 100644 drivers/base/test/test_async_driver_probe.c (limited to 'drivers/base/test') diff --git a/drivers/base/test/.kunitconfig b/drivers/base/test/.kunitconfig new file mode 100644 index 0000000000..473923f099 --- /dev/null +++ b/drivers/base/test/.kunitconfig @@ -0,0 +1,2 @@ +CONFIG_KUNIT=y +CONFIG_DM_KUNIT_TEST=y diff --git a/drivers/base/test/Kconfig b/drivers/base/test/Kconfig new file mode 100644 index 0000000000..9d42051f8f --- /dev/null +++ b/drivers/base/test/Kconfig @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +config TEST_ASYNC_DRIVER_PROBE + tristate "Build kernel module to test asynchronous driver probing" + depends on m + help + Enabling this option produces a kernel module that allows + testing asynchronous driver probing by the device core. + The module name will be test_async_driver_probe.ko + + If unsure say N. + +config DM_KUNIT_TEST + tristate "KUnit Tests for the device model" if !KUNIT_ALL_TESTS + depends on KUNIT + +config DRIVER_PE_KUNIT_TEST + bool "KUnit Tests for property entry API" if !KUNIT_ALL_TESTS + depends on KUNIT=y + default KUNIT_ALL_TESTS diff --git a/drivers/base/test/Makefile b/drivers/base/test/Makefile new file mode 100644 index 0000000000..e321dfc7e9 --- /dev/null +++ b/drivers/base/test/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_TEST_ASYNC_DRIVER_PROBE) += test_async_driver_probe.o + +obj-$(CONFIG_DM_KUNIT_TEST) += root-device-test.o +obj-$(CONFIG_DM_KUNIT_TEST) += platform-device-test.o + +obj-$(CONFIG_DRIVER_PE_KUNIT_TEST) += property-entry-test.o +CFLAGS_property-entry-test.o += $(DISABLE_STRUCTLEAK_PLUGIN) diff --git a/drivers/base/test/platform-device-test.c b/drivers/base/test/platform-device-test.c new file mode 100644 index 0000000000..ea05b87857 --- /dev/null +++ b/drivers/base/test/platform-device-test.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +#include +#include + +#define DEVICE_NAME "test" + +struct test_priv { + bool probe_done; + bool release_done; + wait_queue_head_t probe_wq; + wait_queue_head_t release_wq; + struct device *dev; +}; + +static int platform_device_devm_init(struct kunit *test) +{ + struct test_priv *priv; + + priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv); + init_waitqueue_head(&priv->probe_wq); + init_waitqueue_head(&priv->release_wq); + + test->priv = priv; + + return 0; +} + +static void devm_device_action(void *ptr) +{ + struct test_priv *priv = ptr; + + priv->release_done = true; + wake_up_interruptible(&priv->release_wq); +} + +static void devm_put_device_action(void *ptr) +{ + struct test_priv *priv = ptr; + + put_device(priv->dev); + priv->release_done = true; + wake_up_interruptible(&priv->release_wq); +} + +#define RELEASE_TIMEOUT_MS 100 + +/* + * Tests that a platform bus, non-probed device will run its + * device-managed actions when unregistered. + */ +static void platform_device_devm_register_unregister_test(struct kunit *test) +{ + struct platform_device *pdev; + struct test_priv *priv = test->priv; + int ret; + + pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev); + + ret = platform_device_add(pdev); + KUNIT_ASSERT_EQ(test, ret, 0); + + priv->dev = &pdev->dev; + + ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + platform_device_unregister(pdev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); +} + +/* + * Tests that a platform bus, non-probed device will run its + * device-managed actions when unregistered, even if someone still holds + * a reference to it. + */ +static void platform_device_devm_register_get_unregister_with_devm_test(struct kunit *test) +{ + struct platform_device *pdev; + struct test_priv *priv = test->priv; + int ret; + + pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev); + + ret = platform_device_add(pdev); + KUNIT_ASSERT_EQ(test, ret, 0); + + priv->dev = &pdev->dev; + + get_device(priv->dev); + + ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + platform_device_unregister(pdev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); +} + +static int fake_probe(struct platform_device *pdev) +{ + struct test_priv *priv = platform_get_drvdata(pdev); + + priv->probe_done = true; + wake_up_interruptible(&priv->probe_wq); + + return 0; +} + +static struct platform_driver fake_driver = { + .probe = fake_probe, + .driver = { + .name = DEVICE_NAME, + }, +}; + +/* + * Tests that a platform bus, probed device will run its device-managed + * actions when unregistered. + */ +static void probed_platform_device_devm_register_unregister_test(struct kunit *test) +{ + struct platform_device *pdev; + struct test_priv *priv = test->priv; + int ret; + + ret = platform_driver_register(&fake_driver); + KUNIT_ASSERT_EQ(test, ret, 0); + + pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev); + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + ret = platform_device_add(pdev); + KUNIT_ASSERT_EQ(test, ret, 0); + + ret = wait_event_interruptible_timeout(priv->probe_wq, priv->probe_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_ASSERT_GT(test, ret, 0); + + ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + platform_device_unregister(pdev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); + + platform_driver_unregister(&fake_driver); +} + +/* + * Tests that a platform bus, probed device will run its device-managed + * actions when unregistered, even if someone still holds a reference to + * it. + */ +static void probed_platform_device_devm_register_get_unregister_with_devm_test(struct kunit *test) +{ + struct platform_device *pdev; + struct test_priv *priv = test->priv; + int ret; + + ret = platform_driver_register(&fake_driver); + KUNIT_ASSERT_EQ(test, ret, 0); + + pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev); + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + ret = platform_device_add(pdev); + KUNIT_ASSERT_EQ(test, ret, 0); + + ret = wait_event_interruptible_timeout(priv->probe_wq, priv->probe_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_ASSERT_GT(test, ret, 0); + + get_device(priv->dev); + + ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + platform_device_unregister(pdev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); + + platform_driver_unregister(&fake_driver); +} + +static struct kunit_case platform_device_devm_tests[] = { + KUNIT_CASE(platform_device_devm_register_unregister_test), + KUNIT_CASE(platform_device_devm_register_get_unregister_with_devm_test), + KUNIT_CASE(probed_platform_device_devm_register_unregister_test), + KUNIT_CASE(probed_platform_device_devm_register_get_unregister_with_devm_test), + {} +}; + +static struct kunit_suite platform_device_devm_test_suite = { + .name = "platform-device-devm", + .init = platform_device_devm_init, + .test_cases = platform_device_devm_tests, +}; + +kunit_test_suite(platform_device_devm_test_suite); + +MODULE_DESCRIPTION("Test module for platform devices"); +MODULE_AUTHOR("Maxime Ripard "); +MODULE_LICENSE("GPL"); diff --git a/drivers/base/test/property-entry-test.c b/drivers/base/test/property-entry-test.c new file mode 100644 index 0000000000..dd2b606d76 --- /dev/null +++ b/drivers/base/test/property-entry-test.c @@ -0,0 +1,508 @@ +// SPDX-License-Identifier: GPL-2.0 +// Unit tests for property entries API +// +// Copyright 2019 Google LLC. + +#include +#include +#include + +static void pe_test_uints(struct kunit *test) +{ + static const struct property_entry entries[] = { + PROPERTY_ENTRY_U8("prop-u8", 8), + PROPERTY_ENTRY_U16("prop-u16", 16), + PROPERTY_ENTRY_U32("prop-u32", 32), + PROPERTY_ENTRY_U64("prop-u64", 64), + { } + }; + + struct fwnode_handle *node; + u8 val_u8, array_u8[2]; + u16 val_u16, array_u16[2]; + u32 val_u32, array_u32[2]; + u64 val_u64, array_u64[2]; + int error; + + node = fwnode_create_software_node(entries, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node); + + error = fwnode_property_count_u8(node, "prop-u8"); + KUNIT_EXPECT_EQ(test, error, 1); + + error = fwnode_property_read_u8(node, "prop-u8", &val_u8); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u8, 8); + + error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u8[0], 8); + + error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16(node, "prop-u16", &val_u16); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u16, 16); + + error = fwnode_property_count_u16(node, "prop-u16"); + KUNIT_EXPECT_EQ(test, error, 1); + + error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u16[0], 16); + + error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32(node, "prop-u32", &val_u32); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u32, 32); + + error = fwnode_property_count_u32(node, "prop-u32"); + KUNIT_EXPECT_EQ(test, error, 1); + + error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u32[0], 32); + + error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64(node, "prop-u64", &val_u64); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u64, 64); + + error = fwnode_property_count_u64(node, "prop-u64"); + KUNIT_EXPECT_EQ(test, error, 1); + + error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u64[0], 64); + + error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1); + KUNIT_EXPECT_NE(test, error, 0); + + /* Count 64-bit values as 16-bit */ + error = fwnode_property_count_u16(node, "prop-u64"); + KUNIT_EXPECT_EQ(test, error, 4); + + fwnode_remove_software_node(node); +} + +static void pe_test_uint_arrays(struct kunit *test) +{ + static const u8 a_u8[10] = { 8, 9 }; + static const u16 a_u16[10] = { 16, 17 }; + static const u32 a_u32[10] = { 32, 33 }; + static const u64 a_u64[10] = { 64, 65 }; + static const struct property_entry entries[] = { + PROPERTY_ENTRY_U8_ARRAY("prop-u8", a_u8), + PROPERTY_ENTRY_U16_ARRAY("prop-u16", a_u16), + PROPERTY_ENTRY_U32_ARRAY("prop-u32", a_u32), + PROPERTY_ENTRY_U64_ARRAY("prop-u64", a_u64), + { } + }; + + struct fwnode_handle *node; + u8 val_u8, array_u8[32]; + u16 val_u16, array_u16[32]; + u32 val_u32, array_u32[32]; + u64 val_u64, array_u64[32]; + int error; + + node = fwnode_create_software_node(entries, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node); + + error = fwnode_property_read_u8(node, "prop-u8", &val_u8); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u8, 8); + + error = fwnode_property_count_u8(node, "prop-u8"); + KUNIT_EXPECT_EQ(test, error, 10); + + error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u8[0], 8); + + error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u8[0], 8); + KUNIT_EXPECT_EQ(test, array_u8[1], 9); + + error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 17); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16(node, "prop-u16", &val_u16); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u16, 16); + + error = fwnode_property_count_u16(node, "prop-u16"); + KUNIT_EXPECT_EQ(test, error, 10); + + error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u16[0], 16); + + error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u16[0], 16); + KUNIT_EXPECT_EQ(test, array_u16[1], 17); + + error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 17); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32(node, "prop-u32", &val_u32); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u32, 32); + + error = fwnode_property_count_u32(node, "prop-u32"); + KUNIT_EXPECT_EQ(test, error, 10); + + error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u32[0], 32); + + error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u32[0], 32); + KUNIT_EXPECT_EQ(test, array_u32[1], 33); + + error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 17); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64(node, "prop-u64", &val_u64); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, val_u64, 64); + + error = fwnode_property_count_u64(node, "prop-u64"); + KUNIT_EXPECT_EQ(test, error, 10); + + error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u64[0], 64); + + error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_EQ(test, array_u64[0], 64); + KUNIT_EXPECT_EQ(test, array_u64[1], 65); + + error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 17); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1); + KUNIT_EXPECT_NE(test, error, 0); + + /* Count 64-bit values as 16-bit */ + error = fwnode_property_count_u16(node, "prop-u64"); + KUNIT_EXPECT_EQ(test, error, 40); + + /* Other way around */ + error = fwnode_property_count_u64(node, "prop-u16"); + KUNIT_EXPECT_EQ(test, error, 2); + + fwnode_remove_software_node(node); +} + +static void pe_test_strings(struct kunit *test) +{ + static const char *strings[] = { + "string-a", + "string-b", + }; + + static const struct property_entry entries[] = { + PROPERTY_ENTRY_STRING("str", "single"), + PROPERTY_ENTRY_STRING("empty", ""), + PROPERTY_ENTRY_STRING_ARRAY("strs", strings), + { } + }; + + struct fwnode_handle *node; + const char *str; + const char *strs[10]; + int error; + + node = fwnode_create_software_node(entries, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node); + + error = fwnode_property_read_string(node, "str", &str); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_STREQ(test, str, "single"); + + error = fwnode_property_string_array_count(node, "str"); + KUNIT_EXPECT_EQ(test, error, 1); + + error = fwnode_property_read_string_array(node, "str", strs, 1); + KUNIT_EXPECT_EQ(test, error, 1); + KUNIT_EXPECT_STREQ(test, strs[0], "single"); + + /* asking for more data returns what we have */ + error = fwnode_property_read_string_array(node, "str", strs, 2); + KUNIT_EXPECT_EQ(test, error, 1); + KUNIT_EXPECT_STREQ(test, strs[0], "single"); + + error = fwnode_property_read_string(node, "no-str", &str); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_read_string_array(node, "no-str", strs, 1); + KUNIT_EXPECT_LT(test, error, 0); + + error = fwnode_property_read_string(node, "empty", &str); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_STREQ(test, str, ""); + + error = fwnode_property_string_array_count(node, "strs"); + KUNIT_EXPECT_EQ(test, error, 2); + + error = fwnode_property_read_string_array(node, "strs", strs, 3); + KUNIT_EXPECT_EQ(test, error, 2); + KUNIT_EXPECT_STREQ(test, strs[0], "string-a"); + KUNIT_EXPECT_STREQ(test, strs[1], "string-b"); + + error = fwnode_property_read_string_array(node, "strs", strs, 1); + KUNIT_EXPECT_EQ(test, error, 1); + KUNIT_EXPECT_STREQ(test, strs[0], "string-a"); + + /* NULL argument -> returns size */ + error = fwnode_property_read_string_array(node, "strs", NULL, 0); + KUNIT_EXPECT_EQ(test, error, 2); + + /* accessing array as single value */ + error = fwnode_property_read_string(node, "strs", &str); + KUNIT_EXPECT_EQ(test, error, 0); + KUNIT_EXPECT_STREQ(test, str, "string-a"); + + fwnode_remove_software_node(node); +} + +static void pe_test_bool(struct kunit *test) +{ + static const struct property_entry entries[] = { + PROPERTY_ENTRY_BOOL("prop"), + { } + }; + + struct fwnode_handle *node; + + node = fwnode_create_software_node(entries, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node); + + KUNIT_EXPECT_TRUE(test, fwnode_property_read_bool(node, "prop")); + KUNIT_EXPECT_FALSE(test, fwnode_property_read_bool(node, "not-prop")); + + fwnode_remove_software_node(node); +} + +/* Verifies that small U8 array is stored inline when property is copied */ +static void pe_test_move_inline_u8(struct kunit *test) +{ + static const u8 u8_array_small[8] = { 1, 2, 3, 4 }; + static const u8 u8_array_big[128] = { 5, 6, 7, 8 }; + static const struct property_entry entries[] = { + PROPERTY_ENTRY_U8_ARRAY("small", u8_array_small), + PROPERTY_ENTRY_U8_ARRAY("big", u8_array_big), + { } + }; + + struct property_entry *copy; + const u8 *data_ptr; + + copy = property_entries_dup(entries); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy); + + KUNIT_EXPECT_TRUE(test, copy[0].is_inline); + data_ptr = (u8 *)©[0].value; + KUNIT_EXPECT_EQ(test, data_ptr[0], 1); + KUNIT_EXPECT_EQ(test, data_ptr[1], 2); + + KUNIT_EXPECT_FALSE(test, copy[1].is_inline); + data_ptr = copy[1].pointer; + KUNIT_EXPECT_EQ(test, data_ptr[0], 5); + KUNIT_EXPECT_EQ(test, data_ptr[1], 6); + + property_entries_free(copy); +} + +/* Verifies that single string array is stored inline when property is copied */ +static void pe_test_move_inline_str(struct kunit *test) +{ + static char *str_array_small[] = { "a" }; + static char *str_array_big[] = { "b", "c", "d", "e" }; + static char *str_array_small_empty[] = { "" }; + static struct property_entry entries[] = { + PROPERTY_ENTRY_STRING_ARRAY("small", str_array_small), + PROPERTY_ENTRY_STRING_ARRAY("big", str_array_big), + PROPERTY_ENTRY_STRING_ARRAY("small-empty", str_array_small_empty), + { } + }; + + struct property_entry *copy; + const char * const *data_ptr; + + copy = property_entries_dup(entries); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy); + + KUNIT_EXPECT_TRUE(test, copy[0].is_inline); + KUNIT_EXPECT_STREQ(test, copy[0].value.str[0], "a"); + + KUNIT_EXPECT_FALSE(test, copy[1].is_inline); + data_ptr = copy[1].pointer; + KUNIT_EXPECT_STREQ(test, data_ptr[0], "b"); + KUNIT_EXPECT_STREQ(test, data_ptr[1], "c"); + + KUNIT_EXPECT_TRUE(test, copy[2].is_inline); + KUNIT_EXPECT_STREQ(test, copy[2].value.str[0], ""); + + property_entries_free(copy); +} + +/* Handling of reference properties */ +static void pe_test_reference(struct kunit *test) +{ + static const struct software_node node1 = { .name = "1" }; + static const struct software_node node2 = { .name = "2" }; + static const struct software_node *group[] = { &node1, &node2, NULL }; + + static const struct software_node_ref_args refs[] = { + SOFTWARE_NODE_REFERENCE(&node1), + SOFTWARE_NODE_REFERENCE(&node2, 3, 4), + }; + + const struct property_entry entries[] = { + PROPERTY_ENTRY_REF("ref-1", &node1), + PROPERTY_ENTRY_REF("ref-2", &node2, 1, 2), + PROPERTY_ENTRY_REF_ARRAY("ref-3", refs), + { } + }; + + struct fwnode_handle *node; + struct fwnode_reference_args ref; + int error; + + error = software_node_register_node_group(group); + KUNIT_ASSERT_EQ(test, error, 0); + + node = fwnode_create_software_node(entries, NULL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node); + + error = fwnode_property_get_reference_args(node, "ref-1", NULL, + 0, 0, &ref); + KUNIT_ASSERT_EQ(test, error, 0); + KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node1); + KUNIT_EXPECT_EQ(test, ref.nargs, 0U); + + /* wrong index */ + error = fwnode_property_get_reference_args(node, "ref-1", NULL, + 0, 1, &ref); + KUNIT_EXPECT_NE(test, error, 0); + + error = fwnode_property_get_reference_args(node, "ref-2", NULL, + 1, 0, &ref); + KUNIT_ASSERT_EQ(test, error, 0); + KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2); + KUNIT_EXPECT_EQ(test, ref.nargs, 1U); + KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU); + + /* asking for more args, padded with zero data */ + error = fwnode_property_get_reference_args(node, "ref-2", NULL, + 3, 0, &ref); + KUNIT_ASSERT_EQ(test, error, 0); + KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2); + KUNIT_EXPECT_EQ(test, ref.nargs, 3U); + KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU); + KUNIT_EXPECT_EQ(test, ref.args[1], 2LLU); + KUNIT_EXPECT_EQ(test, ref.args[2], 0LLU); + + /* wrong index */ + error = fwnode_property_get_reference_args(node, "ref-2", NULL, + 2, 1, &ref); + KUNIT_EXPECT_NE(test, error, 0); + + /* array of references */ + error = fwnode_property_get_reference_args(node, "ref-3", NULL, + 0, 0, &ref); + KUNIT_ASSERT_EQ(test, error, 0); + KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node1); + KUNIT_EXPECT_EQ(test, ref.nargs, 0U); + + /* second reference in the array */ + error = fwnode_property_get_reference_args(node, "ref-3", NULL, + 2, 1, &ref); + KUNIT_ASSERT_EQ(test, error, 0); + KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &node2); + KUNIT_EXPECT_EQ(test, ref.nargs, 2U); + KUNIT_EXPECT_EQ(test, ref.args[0], 3LLU); + KUNIT_EXPECT_EQ(test, ref.args[1], 4LLU); + + /* wrong index */ + error = fwnode_property_get_reference_args(node, "ref-1", NULL, + 0, 2, &ref); + KUNIT_EXPECT_NE(test, error, 0); + + fwnode_remove_software_node(node); + software_node_unregister_node_group(group); +} + +static struct kunit_case property_entry_test_cases[] = { + KUNIT_CASE(pe_test_uints), + KUNIT_CASE(pe_test_uint_arrays), + KUNIT_CASE(pe_test_strings), + KUNIT_CASE(pe_test_bool), + KUNIT_CASE(pe_test_move_inline_u8), + KUNIT_CASE(pe_test_move_inline_str), + KUNIT_CASE(pe_test_reference), + { } +}; + +static struct kunit_suite property_entry_test_suite = { + .name = "property-entry", + .test_cases = property_entry_test_cases, +}; + +kunit_test_suite(property_entry_test_suite); diff --git a/drivers/base/test/root-device-test.c b/drivers/base/test/root-device-test.c new file mode 100644 index 0000000000..9aea23c912 --- /dev/null +++ b/drivers/base/test/root-device-test.c @@ -0,0 +1,112 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright 2023 Maxime Ripard + +#include + +#include + +#define DEVICE_NAME "test" + +struct test_priv { + bool probe_done; + bool release_done; + wait_queue_head_t release_wq; + struct device *dev; +}; + +static int root_device_devm_init(struct kunit *test) +{ + struct test_priv *priv; + + priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv); + init_waitqueue_head(&priv->release_wq); + + test->priv = priv; + + return 0; +} + +static void devm_device_action(void *ptr) +{ + struct test_priv *priv = ptr; + + priv->release_done = true; + wake_up_interruptible(&priv->release_wq); +} + +#define RELEASE_TIMEOUT_MS 100 + +/* + * Tests that a bus-less, non-probed device will run its device-managed + * actions when unregistered. + */ +static void root_device_devm_register_unregister_test(struct kunit *test) +{ + struct test_priv *priv = test->priv; + int ret; + + priv->dev = root_device_register(DEVICE_NAME); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev); + + ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + root_device_unregister(priv->dev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); +} + +static void devm_put_device_action(void *ptr) +{ + struct test_priv *priv = ptr; + + put_device(priv->dev); + priv->release_done = true; + wake_up_interruptible(&priv->release_wq); +} + +/* + * Tests that a bus-less, non-probed device will run its device-managed + * actions when unregistered, even if someone still holds a reference to + * it. + */ +static void root_device_devm_register_get_unregister_with_devm_test(struct kunit *test) +{ + struct test_priv *priv = test->priv; + int ret; + + priv->dev = root_device_register(DEVICE_NAME); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev); + + get_device(priv->dev); + + ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv); + KUNIT_ASSERT_EQ(test, ret, 0); + + root_device_unregister(priv->dev); + + ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done, + msecs_to_jiffies(RELEASE_TIMEOUT_MS)); + KUNIT_EXPECT_GT(test, ret, 0); +} + +static struct kunit_case root_device_devm_tests[] = { + KUNIT_CASE(root_device_devm_register_unregister_test), + KUNIT_CASE(root_device_devm_register_get_unregister_with_devm_test), + {} +}; + +static struct kunit_suite root_device_devm_test_suite = { + .name = "root-device-devm", + .init = root_device_devm_init, + .test_cases = root_device_devm_tests, +}; + +kunit_test_suite(root_device_devm_test_suite); + +MODULE_DESCRIPTION("Test module for root devices"); +MODULE_AUTHOR("Maxime Ripard "); +MODULE_LICENSE("GPL"); diff --git a/drivers/base/test/test_async_driver_probe.c b/drivers/base/test/test_async_driver_probe.c new file mode 100644 index 0000000000..3465800baa --- /dev/null +++ b/drivers/base/test/test_async_driver_probe.c @@ -0,0 +1,299 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2014 Google, Inc. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define TEST_PROBE_DELAY (5 * 1000) /* 5 sec */ +#define TEST_PROBE_THRESHOLD (TEST_PROBE_DELAY / 2) + +static atomic_t warnings, errors, timeout, async_completed; + +static int test_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + /* + * Determine if we have hit the "timeout" limit for the test if we + * have then report it as an error, otherwise we wil sleep for the + * required amount of time and then report completion. + */ + if (atomic_read(&timeout)) { + dev_err(dev, "async probe took too long\n"); + atomic_inc(&errors); + } else { + dev_dbg(&pdev->dev, "sleeping for %d msecs in probe\n", + TEST_PROBE_DELAY); + msleep(TEST_PROBE_DELAY); + dev_dbg(&pdev->dev, "done sleeping\n"); + } + + /* + * Report NUMA mismatch if device node is set and we are not + * performing an async init on that node. + */ + if (dev->driver->probe_type == PROBE_PREFER_ASYNCHRONOUS) { + if (IS_ENABLED(CONFIG_NUMA) && + dev_to_node(dev) != numa_node_id()) { + dev_warn(dev, "NUMA node mismatch %d != %d\n", + dev_to_node(dev), numa_node_id()); + atomic_inc(&warnings); + } + + atomic_inc(&async_completed); + } + + return 0; +} + +static struct platform_driver async_driver = { + .driver = { + .name = "test_async_driver", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, + }, + .probe = test_probe, +}; + +static struct platform_driver sync_driver = { + .driver = { + .name = "test_sync_driver", + .probe_type = PROBE_FORCE_SYNCHRONOUS, + }, + .probe = test_probe, +}; + +static struct platform_device *async_dev[NR_CPUS * 2]; +static struct platform_device *sync_dev[2]; + +static struct platform_device * +test_platform_device_register_node(char *name, int id, int nid) +{ + struct platform_device *pdev; + int ret; + + pdev = platform_device_alloc(name, id); + if (!pdev) + return ERR_PTR(-ENOMEM); + + if (nid != NUMA_NO_NODE) + set_dev_node(&pdev->dev, nid); + + ret = platform_device_add(pdev); + if (ret) { + platform_device_put(pdev); + return ERR_PTR(ret); + } + + return pdev; + +} + +static int __init test_async_probe_init(void) +{ + struct platform_device **pdev = NULL; + int async_id = 0, sync_id = 0; + unsigned long long duration; + ktime_t calltime; + int err, nid, cpu; + + pr_info("registering first set of asynchronous devices...\n"); + + for_each_online_cpu(cpu) { + nid = cpu_to_node(cpu); + pdev = &async_dev[async_id]; + *pdev = test_platform_device_register_node("test_async_driver", + async_id, + nid); + if (IS_ERR(*pdev)) { + err = PTR_ERR(*pdev); + *pdev = NULL; + pr_err("failed to create async_dev: %d\n", err); + goto err_unregister_async_devs; + } + + async_id++; + } + + pr_info("registering asynchronous driver...\n"); + calltime = ktime_get(); + err = platform_driver_register(&async_driver); + if (err) { + pr_err("Failed to register async_driver: %d\n", err); + goto err_unregister_async_devs; + } + + duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime); + pr_info("registration took %lld msecs\n", duration); + if (duration > TEST_PROBE_THRESHOLD) { + pr_err("test failed: probe took too long\n"); + err = -ETIMEDOUT; + goto err_unregister_async_driver; + } + + pr_info("registering second set of asynchronous devices...\n"); + calltime = ktime_get(); + for_each_online_cpu(cpu) { + nid = cpu_to_node(cpu); + pdev = &async_dev[async_id]; + + *pdev = test_platform_device_register_node("test_async_driver", + async_id, + nid); + if (IS_ERR(*pdev)) { + err = PTR_ERR(*pdev); + *pdev = NULL; + pr_err("failed to create async_dev: %d\n", err); + goto err_unregister_async_driver; + } + + async_id++; + } + + duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime); + dev_info(&(*pdev)->dev, + "registration took %lld msecs\n", duration); + if (duration > TEST_PROBE_THRESHOLD) { + dev_err(&(*pdev)->dev, + "test failed: probe took too long\n"); + err = -ETIMEDOUT; + goto err_unregister_async_driver; + } + + + pr_info("registering first synchronous device...\n"); + nid = cpu_to_node(cpu); + pdev = &sync_dev[sync_id]; + + *pdev = test_platform_device_register_node("test_sync_driver", + sync_id, + NUMA_NO_NODE); + if (IS_ERR(*pdev)) { + err = PTR_ERR(*pdev); + *pdev = NULL; + pr_err("failed to create sync_dev: %d\n", err); + goto err_unregister_async_driver; + } + + sync_id++; + + pr_info("registering synchronous driver...\n"); + calltime = ktime_get(); + err = platform_driver_register(&sync_driver); + if (err) { + pr_err("Failed to register async_driver: %d\n", err); + goto err_unregister_sync_devs; + } + + duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime); + pr_info("registration took %lld msecs\n", duration); + if (duration < TEST_PROBE_THRESHOLD) { + dev_err(&(*pdev)->dev, + "test failed: probe was too quick\n"); + err = -ETIMEDOUT; + goto err_unregister_sync_driver; + } + + pr_info("registering second synchronous device...\n"); + pdev = &sync_dev[sync_id]; + calltime = ktime_get(); + + *pdev = test_platform_device_register_node("test_sync_driver", + sync_id, + NUMA_NO_NODE); + if (IS_ERR(*pdev)) { + err = PTR_ERR(*pdev); + *pdev = NULL; + pr_err("failed to create sync_dev: %d\n", err); + goto err_unregister_sync_driver; + } + + sync_id++; + + duration = (unsigned long long)ktime_ms_delta(ktime_get(), calltime); + dev_info(&(*pdev)->dev, + "registration took %lld msecs\n", duration); + if (duration < TEST_PROBE_THRESHOLD) { + dev_err(&(*pdev)->dev, + "test failed: probe was too quick\n"); + err = -ETIMEDOUT; + goto err_unregister_sync_driver; + } + + /* + * The async events should have completed while we were taking care + * of the synchronous events. We will now terminate any outstanding + * asynchronous probe calls remaining by forcing timeout and remove + * the driver before we return which should force the flush of the + * pending asynchronous probe calls. + * + * Otherwise if they completed without errors or warnings then + * report successful completion. + */ + if (atomic_read(&async_completed) != async_id) { + pr_err("async events still pending, forcing timeout\n"); + atomic_inc(&timeout); + err = -ETIMEDOUT; + } else if (!atomic_read(&errors) && !atomic_read(&warnings)) { + pr_info("completed successfully\n"); + return 0; + } + +err_unregister_sync_driver: + platform_driver_unregister(&sync_driver); +err_unregister_sync_devs: + while (sync_id--) + platform_device_unregister(sync_dev[sync_id]); +err_unregister_async_driver: + platform_driver_unregister(&async_driver); +err_unregister_async_devs: + while (async_id--) + platform_device_unregister(async_dev[async_id]); + + /* + * If err is already set then count that as an additional error for + * the test. Otherwise we will report an invalid argument error and + * not count that as we should have reached here as a result of + * errors or warnings being reported by the probe routine. + */ + if (err) + atomic_inc(&errors); + else + err = -EINVAL; + + pr_err("Test failed with %d errors and %d warnings\n", + atomic_read(&errors), atomic_read(&warnings)); + + return err; +} +module_init(test_async_probe_init); + +static void __exit test_async_probe_exit(void) +{ + int id = 2; + + platform_driver_unregister(&async_driver); + platform_driver_unregister(&sync_driver); + + while (id--) + platform_device_unregister(sync_dev[id]); + + id = NR_CPUS * 2; + while (id--) + platform_device_unregister(async_dev[id]); +} +module_exit(test_async_probe_exit); + +MODULE_DESCRIPTION("Test module for asynchronous driver probing"); +MODULE_AUTHOR("Dmitry Torokhov "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3