platform/chrome: cros_ec_proto: add Kunit test for getting wake mask

cros_ec_get_host_event_wake_mask() expects to receive
sizeof(struct ec_response_host_event_mask) 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_event_wake_mask().

Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://lore.kernel.org/r/20220609084957.3684698-21-tzungbi@kernel.org

diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
index 757d601..1e2a152 100644 (file)
--- a/drivers/platform/chrome/cros_ec_proto_test.c
+++ b/drivers/platform/chrome/cros_ec_proto_test.c
@@ -1408,6 +1408,133 @@ static void cros_ec_proto_test_query_all_default_wake_mask_return_error(struct k
        }
 }
 
+static void cros_ec_proto_test_query_all_default_wake_mask_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_event_wake_mask = U32_MAX;
+
+       /* 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);
+       }
+
+       /* 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);
+       }
+
+       /* For get_host_event_wake_mask(). */
+       {
+               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));
+       }
+
+       /* For get_host_event_wake_mask(). */
+       {
+               u32 mask;
+
+               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_HOST_EVENT_GET_WAKE_MASK);
+               KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_host_event_mask));
+               KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
+
+               mask = ec_dev->host_event_wake_mask;
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU), 0);
+               KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_STATUS), 0);
+       }
+}
+
 static void cros_ec_proto_test_release(struct device *dev)
 {
 }
@@ -1473,6 +1600,7 @@ static struct kunit_case cros_ec_proto_test_cases[] = {
        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),
+       KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return0),
        {}
 };