diff mbox series

[v7,2/4] fpga: add an initial KUnit suite for the FPGA Bridge

Message ID 20230616154405.220502-3-marpagan@redhat.com (mailing list archive)
State New
Headers show
Series fpga: add initial KUnit tests for the subsystem | expand

Commit Message

Marco Pagani June 16, 2023, 3:44 p.m. UTC 
The suite tests the basic behaviors of the FPGA Bridge including
the functions that operate on a list of Bridges.

Signed-off-by: Marco Pagani <marpagan@redhat.com>
---
 drivers/fpga/tests/fpga-bridge-test.c | 175 ++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 drivers/fpga/tests/fpga-bridge-test.c

Comments

Xu Yilun June 25, 2023, 7:33 a.m. UTC | #1 
On 2023-06-16 at 17:44:03 +0200, Marco Pagani wrote:
> The suite tests the basic behaviors of the FPGA Bridge including
> the functions that operate on a list of Bridges.
                                          ^
why uppercase?

> 
> Signed-off-by: Marco Pagani <marpagan@redhat.com>
> ---
>  drivers/fpga/tests/fpga-bridge-test.c | 175 ++++++++++++++++++++++++++
>  1 file changed, 175 insertions(+)
>  create mode 100644 drivers/fpga/tests/fpga-bridge-test.c
> 
> diff --git a/drivers/fpga/tests/fpga-bridge-test.c b/drivers/fpga/tests/fpga-bridge-test.c
> new file mode 100644
> index 000000000000..fce67ac59a7c
> --- /dev/null
> +++ b/drivers/fpga/tests/fpga-bridge-test.c
> @@ -0,0 +1,175 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * KUnit test for the FPGA Bridge
> + *
> + * Copyright (C) 2023 Red Hat, Inc.
> + *
> + * Author: Marco Pagani <marpagan@redhat.com>
> + */
> +
> +#include <linux/types.h>
> +#include <linux/module.h>
> +#include <linux/device.h>
> +#include <kunit/test.h>
> +#include <linux/fpga/fpga-bridge.h>

alphabetical order please.

Others LGTM.
Acked-by: Xu Yilun <yilun.xu@intel.com>
Marco Pagani June 27, 2023, 1:26 p.m. UTC | #2 
On 2023-06-25 09:33, Xu Yilun wrote:
> On 2023-06-16 at 17:44:03 +0200, Marco Pagani wrote:
>> The suite tests the basic behaviors of the FPGA Bridge including
>> the functions that operate on a list of Bridges.
>                                           ^
> why uppercase?
>

It's a typo. I'll fix the description in the next version.

>>
>> Signed-off-by: Marco Pagani <marpagan@redhat.com>
>> ---
>>  drivers/fpga/tests/fpga-bridge-test.c | 175 ++++++++++++++++++++++++++
>>  1 file changed, 175 insertions(+)
>>  create mode 100644 drivers/fpga/tests/fpga-bridge-test.c
>>
>> diff --git a/drivers/fpga/tests/fpga-bridge-test.c b/drivers/fpga/tests/fpga-bridge-test.c
>> new file mode 100644
>> index 000000000000..fce67ac59a7c
>> --- /dev/null
>> +++ b/drivers/fpga/tests/fpga-bridge-test.c
>> @@ -0,0 +1,175 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * KUnit test for the FPGA Bridge
>> + *
>> + * Copyright (C) 2023 Red Hat, Inc.
>> + *
>> + * Author: Marco Pagani <marpagan@redhat.com>
>> + */
>> +
>> +#include <linux/types.h>
>> +#include <linux/module.h>
>> +#include <linux/device.h>
>> +#include <kunit/test.h>
>> +#include <linux/fpga/fpga-bridge.h>
> 
> alphabetical order please.
>

I'll sort all includes alphabetically in the next version.
 
> Others LGTM.
> Acked-by: Xu Yilun <yilun.xu@intel.com>
>
diff mbox series

Patch

diff --git a/drivers/fpga/tests/fpga-bridge-test.c b/drivers/fpga/tests/fpga-bridge-test.c
new file mode 100644
index 000000000000..fce67ac59a7c
--- /dev/null
+++ b/drivers/fpga/tests/fpga-bridge-test.c
@@ -0,0 +1,175 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * KUnit test for the FPGA Bridge
+ *
+ * Copyright (C) 2023 Red Hat, Inc.
+ *
+ * Author: Marco Pagani <marpagan@redhat.com>
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <kunit/test.h>
+#include <linux/fpga/fpga-bridge.h>
+
+struct bridge_stats {
+	bool enable;
+};
+
+struct bridge_ctx {
+	struct fpga_bridge *bridge;
+	struct platform_device *pdev;
+	struct bridge_stats stats;
+};
+
+static int op_enable_set(struct fpga_bridge *bridge, bool enable)
+{
+	struct bridge_stats *stats = bridge->priv;
+
+	stats->enable = enable;
+
+	return 0;
+}
+
+/*
+ * Fake Bridge that implements only the enable_set op to track
+ * the state.
+ */
+static const struct fpga_bridge_ops fake_bridge_ops = {
+	.enable_set = op_enable_set
+};
+
+/**
+ * register_test_bridge() - Register a fake Bridge for testing.
+ * @test: KUnit test context object.
+ *
+ * Return: Context of the newly registered Bridge.
+ */
+static struct bridge_ctx *register_test_bridge(struct kunit *test)
+{
+	struct bridge_ctx *ctx;
+
+	ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+	ctx->pdev = platform_device_register_simple("bridge_pdev", PLATFORM_DEVID_AUTO, NULL, 0);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->pdev);
+
+	ctx->bridge = fpga_bridge_register(&ctx->pdev->dev, "Fake FPGA Bridge", &fake_bridge_ops,
+					   &ctx->stats);
+	KUNIT_ASSERT_FALSE(test, IS_ERR_OR_NULL(ctx->bridge));
+
+	return ctx;
+}
+
+static void unregister_test_bridge(struct bridge_ctx *ctx)
+{
+	fpga_bridge_unregister(ctx->bridge);
+	platform_device_unregister(ctx->pdev);
+}
+
+static void fpga_bridge_test_get(struct kunit *test)
+{
+	struct bridge_ctx *ctx = test->priv;
+	struct fpga_bridge *bridge;
+
+	bridge = fpga_bridge_get(&ctx->pdev->dev, NULL);
+	KUNIT_EXPECT_PTR_EQ(test, bridge, ctx->bridge);
+
+	bridge = fpga_bridge_get(&ctx->pdev->dev, NULL);
+	KUNIT_EXPECT_EQ(test, PTR_ERR(bridge), -EBUSY);
+
+	fpga_bridge_put(ctx->bridge);
+}
+
+static void fpga_bridge_test_toggle(struct kunit *test)
+{
+	struct bridge_ctx *ctx = test->priv;
+	int ret;
+
+	ret = fpga_bridge_disable(ctx->bridge);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+	KUNIT_EXPECT_FALSE(test, ctx->stats.enable);
+
+	ret = fpga_bridge_enable(ctx->bridge);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+	KUNIT_EXPECT_TRUE(test, ctx->stats.enable);
+}
+
+/* Test the functions for getting and controlling a list of bridges */
+static void fpga_bridge_test_get_put_list(struct kunit *test)
+{
+	struct list_head bridge_list;
+	struct bridge_ctx *ctx_0, *ctx_1;
+	int ret;
+
+	ctx_0 = test->priv;
+	ctx_1 = register_test_bridge(test);
+
+	INIT_LIST_HEAD(&bridge_list);
+
+	/* Get bridge 0 and add it to the list */
+	ret = fpga_bridge_get_to_list(&ctx_0->pdev->dev, NULL, &bridge_list);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+
+	KUNIT_EXPECT_PTR_EQ(test, ctx_0->bridge,
+			    list_first_entry_or_null(&bridge_list, struct fpga_bridge, node));
+
+	/* Get bridge 1 and add it to the list */
+	ret = fpga_bridge_get_to_list(&ctx_1->pdev->dev, NULL, &bridge_list);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+
+	KUNIT_EXPECT_PTR_EQ(test, ctx_1->bridge,
+			    list_first_entry_or_null(&bridge_list, struct fpga_bridge, node));
+
+	/* Disable an then enable both bridges from the list */
+	ret = fpga_bridges_disable(&bridge_list);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+
+	KUNIT_EXPECT_FALSE(test, ctx_0->stats.enable);
+	KUNIT_EXPECT_FALSE(test, ctx_1->stats.enable);
+
+	ret = fpga_bridges_enable(&bridge_list);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+
+	KUNIT_EXPECT_TRUE(test, ctx_0->stats.enable);
+	KUNIT_EXPECT_TRUE(test, ctx_1->stats.enable);
+
+	/* Put and remove both bridges from the list */
+	fpga_bridges_put(&bridge_list);
+
+	KUNIT_EXPECT_TRUE(test, list_empty(&bridge_list));
+
+	unregister_test_bridge(ctx_1);
+}
+
+static int fpga_bridge_test_init(struct kunit *test)
+{
+	test->priv = register_test_bridge(test);
+
+	return 0;
+}
+
+static void fpga_bridge_test_exit(struct kunit *test)
+{
+	unregister_test_bridge(test->priv);
+}
+
+static struct kunit_case fpga_bridge_test_cases[] = {
+	KUNIT_CASE(fpga_bridge_test_get),
+	KUNIT_CASE(fpga_bridge_test_toggle),
+	KUNIT_CASE(fpga_bridge_test_get_put_list),
+	{}
+};
+
+static struct kunit_suite fpga_bridge_suite = {
+	.name = "fpga_bridge",
+	.init = fpga_bridge_test_init,
+	.exit = fpga_bridge_test_exit,
+	.test_cases = fpga_bridge_test_cases,
+};
+
+kunit_test_suite(fpga_bridge_suite);
+
+MODULE_LICENSE("GPL");