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Subject[PATCH v3 19/23] platform/chrome: cros_ec_proto: add Kunit tests for getting cmd mask
Date
cros_ec_get_host_command_version_mask() expects to receive
sizeof(struct ec_response_get_cmd_versions) from send_command().
The payload is valid only if the return value is positive.

Add Kunit tests for returning 0 from send_command() in
cros_ec_get_host_command_version_mask().

Note that because the 2 cros_ec_get_host_command_version_mask() use the
same `ver_mask`. cros_ec_proto_test_query_all_no_host_sleep_return0()
polluates the `ver_mask` and returns 0 on the second send_command() to
make sure the second cros_ec_get_host_command_version_mask() doesn't
take the garbage from the previous call.

Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
---
No v2. New and separated from the original series.

drivers/platform/chrome/cros_ec_proto_test.c | 197 +++++++++++++++++++
1 file changed, 197 insertions(+)

diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
index eb6d77b95c9f..c988ff1e2a5a 100644
--- a/drivers/platform/chrome/cros_ec_proto_test.c
+++ b/drivers/platform/chrome/cros_ec_proto_test.c
@@ -980,6 +980,94 @@ static void cros_ec_proto_test_query_all_no_mkbp_return_error(struct kunit *test
}
}

+static void cros_ec_proto_test_query_all_no_mkbp_return0(struct kunit *test)
+{
+ struct cros_ec_proto_test_priv *priv = test->priv;
+ struct cros_ec_device *ec_dev = &priv->ec_dev;
+ struct ec_xfer_mock *mock;
+ int ret;
+
+ /* Set some garbage bytes. */
+ ec_dev->mkbp_event_supported = 0xbf;
+
+ /* For cros_ec_get_proto_info() without passthru. */
+ {
+ struct ec_response_get_protocol_info *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ /*
+ * Although it doesn't check the value, provides valid sizes so that
+ * cros_ec_query_all() allocates din and dout correctly.
+ */
+ data = (struct ec_response_get_protocol_info *)mock->o_data;
+ data->max_request_packet_size = 0xbe;
+ data->max_response_packet_size = 0xef;
+ }
+
+ /* For cros_ec_get_proto_info() with passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for MKBP. */
+ {
+ mock = cros_kunit_ec_xfer_mock_add(test, 0);
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_get_proto_info() without passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_protocol_info));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
+ }
+
+ /* For cros_ec_get_proto_info() with passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command,
+ EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
+ EC_CMD_GET_PROTOCOL_INFO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_protocol_info));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for MKBP. */
+ {
+ struct ec_params_get_cmd_versions *data;
+
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_cmd_versions));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
+
+ data = (struct ec_params_get_cmd_versions *)mock->i_data;
+ KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_GET_NEXT_EVENT);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->mkbp_event_supported, 0);
+ }
+}
+
static void cros_ec_proto_test_query_all_no_host_sleep(struct kunit *test)
{
struct cros_ec_proto_test_priv *priv = test->priv;
@@ -1086,6 +1174,113 @@ static void cros_ec_proto_test_query_all_no_host_sleep(struct kunit *test)
}
}

+static void cros_ec_proto_test_query_all_no_host_sleep_return0(struct kunit *test)
+{
+ struct cros_ec_proto_test_priv *priv = test->priv;
+ struct cros_ec_device *ec_dev = &priv->ec_dev;
+ struct ec_xfer_mock *mock;
+ int ret;
+
+ /* Set some garbage bytes. */
+ ec_dev->host_sleep_v1 = true;
+
+ /* For cros_ec_get_proto_info() without passthru. */
+ {
+ struct ec_response_get_protocol_info *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ /*
+ * Although it doesn't check the value, provides valid sizes so that
+ * cros_ec_query_all() allocates din and dout correctly.
+ */
+ data = (struct ec_response_get_protocol_info *)mock->o_data;
+ data->max_request_packet_size = 0xbe;
+ data->max_response_packet_size = 0xef;
+ }
+
+ /* For cros_ec_get_proto_info() with passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for MKBP. */
+ {
+ struct ec_response_get_cmd_versions *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ /* In order to pollute next cros_ec_get_host_command_version_mask(). */
+ data = (struct ec_response_get_cmd_versions *)mock->o_data;
+ data->version_mask = 0xbeef;
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for host sleep v1. */
+ {
+ mock = cros_kunit_ec_xfer_mock_add(test, 0);
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_get_proto_info() without passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_protocol_info));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
+ }
+
+ /* For cros_ec_get_proto_info() with passthru. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command,
+ EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
+ EC_CMD_GET_PROTOCOL_INFO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_protocol_info));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for MKBP. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_cmd_versions));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for host sleep v1. */
+ {
+ mock = cros_kunit_ec_xfer_mock_next();
+ KUNIT_EXPECT_PTR_NE(test, mock, NULL);
+
+ KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
+ KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize,
+ sizeof(struct ec_response_get_cmd_versions));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
+
+ KUNIT_EXPECT_FALSE(test, ec_dev->host_sleep_v1);
+ }
+}
+
static void cros_ec_proto_test_query_all_default_wake_mask_return_error(struct kunit *test)
{
struct cros_ec_proto_test_priv *priv = test->priv;
@@ -1274,7 +1469,9 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return0),
KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp),
KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp_return_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp_return0),
KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep),
+ KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep_return0),
KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return_error),
{}
};
--
2.36.1.255.ge46751e96f-goog
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