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SubjectRe: [PATCH v3 17/23] platform/chrome: cros_ec_proto: add Kunit test for getting cmd mask error
On Wed, Jun 8, 2022 at 4:08 AM Tzung-Bi Shih <tzungbi@kernel.org> wrote:
>
> cros_ec_query_all() uses cros_ec_get_host_command_version_mask() to
> query the supported MKBP version; cros_ec_get_host_command_version_mask()
> uses send_command() for transfering the host command.
>
> Returning >=0 from send_command() only denotes the transfer was success.
> cros_ec_get_host_command_version_mask() should check if EC wasn't happy
> by checking `msg->result`.
>
> Add a Kunit test for returning error in `msg->result` in
> cros_ec_get_host_command_version_mask(). For the case,
> cros_ec_query_all() should find the EC device doesn't support MKBP.
>
> Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>

Reviewed-by: Guenter Roeck <groeck@chromium.org>

> ---
> No v2. New and separated from the original series.
>
> drivers/platform/chrome/cros_ec_proto_test.c | 89 ++++++++++++++++++++
> 1 file changed, 89 insertions(+)
>
> diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
> index ec106d0f5648..eb6d77b95c9f 100644
> --- a/drivers/platform/chrome/cros_ec_proto_test.c
> +++ b/drivers/platform/chrome/cros_ec_proto_test.c
> @@ -892,6 +892,94 @@ static void cros_ec_proto_test_query_all_no_mkbp(struct kunit *test)
> }
> }
>
> +static void cros_ec_proto_test_query_all_no_mkbp_return_error(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_addx(test, 0, EC_RES_INVALID_COMMAND, 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;
> @@ -1185,6 +1273,7 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
> KUNIT_CASE(cros_ec_proto_test_query_all_legacy_data_error),
> 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_host_sleep),
> KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return_error),
> {}
> --
> 2.36.1.255.ge46751e96f-goog
>

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