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Subject[PATCH v3 02/23] platform/chrome: cros_ec_proto: add Kunit tests for cros_ec_query_all()
Date
cros_ec_query_all() sends multiple host commands to EC for querying
supported protocols and settings.

Add required mock for interacting with cros_ec_query_all() and Kunit
tests.

Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
---
No change from v2.

Changes from v1:
- Initialize the mock ec_dev->dev more to get rid of kernel WARN().
- Elaborate more on the test case names.

drivers/platform/chrome/Kconfig | 6 +
drivers/platform/chrome/Makefile | 1 +
drivers/platform/chrome/cros_ec_proto_test.c | 802 +++++++++++++++++++
drivers/platform/chrome/cros_kunit_util.c | 98 +++
drivers/platform/chrome/cros_kunit_util.h | 36 +
5 files changed, 943 insertions(+)
create mode 100644 drivers/platform/chrome/cros_kunit_util.c
create mode 100644 drivers/platform/chrome/cros_kunit_util.h

diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
index 4b3d2427e8dd..0b069d874845 100644
--- a/drivers/platform/chrome/Kconfig
+++ b/drivers/platform/chrome/Kconfig
@@ -268,11 +268,17 @@ config CHROMEOS_PRIVACY_SCREEN
source "drivers/platform/chrome/wilco_ec/Kconfig"

# Kunit test cases
+config CROS_KUNIT
+ tristate
+ help
+ ChromeOS Kunit.
+
config CROS_EC_PROTO_KUNIT_TEST
tristate "Kunit tests for ChromeOS EC protocol" if !KUNIT_ALL_TESTS
depends on KUNIT && CROS_EC
default KUNIT_ALL_TESTS
select CROS_EC_PROTO
+ select CROS_KUNIT
help
Kunit tests for the ChromeOS Embedded Controller protocol.

diff --git a/drivers/platform/chrome/Makefile b/drivers/platform/chrome/Makefile
index 3c380066c6b6..a06bc56d12a8 100644
--- a/drivers/platform/chrome/Makefile
+++ b/drivers/platform/chrome/Makefile
@@ -32,4 +32,5 @@ obj-$(CONFIG_CROS_USBPD_NOTIFY) += cros_usbpd_notify.o
obj-$(CONFIG_WILCO_EC) += wilco_ec/

# Kunit test cases
+obj-$(CONFIG_CROS_KUNIT) += cros_kunit_util.o
obj-$(CONFIG_CROS_EC_PROTO_KUNIT_TEST) += cros_ec_proto_test.o
diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c
index 25c4fca5c165..675306c16d47 100644
--- a/drivers/platform/chrome/cros_ec_proto_test.c
+++ b/drivers/platform/chrome/cros_ec_proto_test.c
@@ -9,6 +9,7 @@
#include <linux/platform_data/cros_ec_proto.h>

#include "cros_ec.h"
+#include "cros_kunit_util.h"

#define BUFSIZE 512

@@ -172,6 +173,779 @@ static void cros_ec_proto_test_check_result(struct kunit *test)
KUNIT_EXPECT_EQ(test, ret, -EAGAIN);
}

+static void cros_ec_proto_test_query_all_pretest(struct kunit *test)
+{
+ struct cros_ec_proto_test_priv *priv = test->priv;
+ struct cros_ec_device *ec_dev = &priv->ec_dev;
+
+ /*
+ * cros_ec_query_all() will free din and dout and allocate them again to fit the usage by
+ * calling devm_kfree() and devm_kzalloc(). Set them to NULL as they aren't managed by
+ * ec_dev->dev but allocated statically in struct cros_ec_proto_test_priv
+ * (see cros_ec_proto_test_init()).
+ */
+ ec_dev->din = NULL;
+ ec_dev->dout = NULL;
+}
+
+static void cros_ec_proto_test_query_all_normal(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;
+
+ /* For cros_ec_host_command_proto_query() 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);
+
+ data = (struct ec_response_get_protocol_info *)mock->o_data;
+ data->protocol_versions = BIT(3) | BIT(2);
+ data->max_request_packet_size = 0xbe;
+ data->max_response_packet_size = 0xef;
+ }
+
+ /* For cros_ec_host_command_proto_query() with 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);
+
+ data = (struct ec_response_get_protocol_info *)mock->o_data;
+ data->max_request_packet_size = 0xbf;
+ }
+
+ /* 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);
+
+ data = (struct ec_response_get_cmd_versions *)mock->o_data;
+ data->version_mask = BIT(6) | BIT(5);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for host sleep v1. */
+ {
+ struct ec_response_get_cmd_versions *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ data = (struct ec_response_get_cmd_versions *)mock->o_data;
+ data->version_mask = BIT(1);
+ }
+
+ /* For cros_ec_get_host_event_wake_mask(). */
+ {
+ struct ec_response_host_event_mask *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ data = (struct ec_response_host_event_mask *)mock->o_data;
+ data->mask = 0xbeef;
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_host_command_proto_query() 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);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->max_request, 0xbe - sizeof(struct ec_host_request));
+ KUNIT_EXPECT_EQ(test, ec_dev->max_response, 0xef - sizeof(struct ec_host_response));
+ KUNIT_EXPECT_EQ(test, ec_dev->proto_version, 3);
+ KUNIT_EXPECT_EQ(test, ec_dev->din_size, 0xef + EC_MAX_RESPONSE_OVERHEAD);
+ KUNIT_EXPECT_EQ(test, ec_dev->dout_size, 0xbe + EC_MAX_REQUEST_OVERHEAD);
+ }
+
+ /* For cros_ec_host_command_proto_query() 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(1) | 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);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0xbf - sizeof(struct ec_host_request));
+ }
+
+ /* 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, 7);
+ }
+
+ /* For cros_ec_get_host_command_version_mask() for host sleep v1. */
+ {
+ 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_HOST_SLEEP_EVENT);
+
+ KUNIT_EXPECT_TRUE(test, ec_dev->host_sleep_v1);
+ }
+
+ /* For cros_ec_get_host_event_wake_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);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->host_event_wake_mask, 0xbeef);
+ }
+}
+
+static void cros_ec_proto_test_query_all_no_pd_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->max_passthru = 0xbf;
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query() with passthru. */
+ {
+ 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_host_command_proto_query() 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_host_command_proto_query() 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(1) | 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);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
+ }
+}
+
+static void cros_ec_proto_test_query_all_legacy_normal_v3_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;
+
+ /* For cros_ec_host_command_proto_query() without 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_host_command_proto_query_v2(). */
+ {
+ struct ec_response_hello *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ data = (struct ec_response_hello *)mock->o_data;
+ data->out_data = 0xa1b2c3d4;
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query_v2(). */
+ {
+ struct ec_params_hello *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_HELLO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
+
+ data = (struct ec_params_hello *)mock->i_data;
+ KUNIT_EXPECT_EQ(test, data->in_data, 0xa0b0c0d0);
+
+ KUNIT_EXPECT_EQ(test, ec_dev->proto_version, 2);
+ KUNIT_EXPECT_EQ(test, ec_dev->max_request, EC_PROTO2_MAX_PARAM_SIZE);
+ KUNIT_EXPECT_EQ(test, ec_dev->max_response, EC_PROTO2_MAX_PARAM_SIZE);
+ KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
+ KUNIT_EXPECT_PTR_EQ(test, ec_dev->pkt_xfer, NULL);
+ KUNIT_EXPECT_EQ(test, ec_dev->din_size, EC_PROTO2_MSG_BYTES);
+ KUNIT_EXPECT_EQ(test, ec_dev->dout_size, EC_PROTO2_MSG_BYTES);
+ }
+}
+
+static void cros_ec_proto_test_query_all_legacy_xfer_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;
+
+ /* For cros_ec_host_command_proto_query() without 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_host_command_proto_query_v2(). */
+ {
+ mock = cros_kunit_ec_xfer_mock_addx(test, -EIO, EC_RES_SUCCESS, 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, -EIO);
+ KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query_v2(). */
+ {
+ 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_HELLO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
+ }
+}
+
+static void cros_ec_proto_test_query_all_legacy_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;
+
+ /* For cros_ec_host_command_proto_query() without 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_host_command_proto_query_v2(). */
+ {
+ 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, EC_RES_INVALID_COMMAND);
+ KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query_v2(). */
+ {
+ 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_HELLO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
+ }
+}
+
+static void cros_ec_proto_test_query_all_legacy_data_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;
+
+ /* For cros_ec_host_command_proto_query() without 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_host_command_proto_query_v2(). */
+ {
+ struct ec_response_hello *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ data = (struct ec_response_hello *)mock->o_data;
+ data->out_data = 0xbeefbfbf;
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, -EBADMSG);
+ KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query_v2(). */
+ {
+ 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_HELLO);
+ KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
+ KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
+ }
+}
+
+static void cros_ec_proto_test_query_all_no_mkbp(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_host_command_proto_query() 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_host_command_proto_query() 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);
+
+ data = (struct ec_response_get_cmd_versions *)mock->o_data;
+ data->version_mask = 0;
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query() 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(1) | 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;
+ 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_host_command_proto_query() 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_host_command_proto_query() 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. */
+ {
+ struct ec_response_get_cmd_versions *data;
+
+ mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
+ KUNIT_ASSERT_PTR_NE(test, mock, NULL);
+
+ data = (struct ec_response_get_cmd_versions *)mock->o_data;
+ data->version_mask = 0;
+ }
+
+ cros_ec_proto_test_query_all_pretest(test);
+ ret = cros_ec_query_all(ec_dev);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* For cros_ec_host_command_proto_query() 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_host_command_proto_query() 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(1) | 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;
+ 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_host_command_proto_query() 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_host_command_proto_query() 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 cros_ec_get_host_event_wake_mask(). */
+ {
+ 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_host_command_proto_query() 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_host_command_proto_query() 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(1) | 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 cros_ec_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)
+{
+}
+
static int cros_ec_proto_test_init(struct kunit *test)
{
struct cros_ec_proto_test_priv *priv;
@@ -188,24 +962,52 @@ static int cros_ec_proto_test_init(struct kunit *test)
ec_dev->din = (u8 *)priv->din;
ec_dev->din_size = ARRAY_SIZE(priv->din);
ec_dev->proto_version = EC_HOST_REQUEST_VERSION;
+ ec_dev->dev = kunit_kzalloc(test, sizeof(*ec_dev->dev), GFP_KERNEL);
+ if (!ec_dev->dev)
+ return -ENOMEM;
+ device_initialize(ec_dev->dev);
+ dev_set_name(ec_dev->dev, "cros_ec_proto_test");
+ ec_dev->dev->release = cros_ec_proto_test_release;
+ ec_dev->cmd_xfer = cros_kunit_ec_xfer_mock;
+ ec_dev->pkt_xfer = cros_kunit_ec_xfer_mock;

priv->msg = (struct cros_ec_command *)priv->_msg;

+ cros_kunit_mock_reset();
+
return 0;
}

+static void cros_ec_proto_test_exit(struct kunit *test)
+{
+ struct cros_ec_proto_test_priv *priv = test->priv;
+ struct cros_ec_device *ec_dev = &priv->ec_dev;
+
+ put_device(ec_dev->dev);
+}
+
static struct kunit_case cros_ec_proto_test_cases[] = {
KUNIT_CASE(cros_ec_proto_test_prepare_tx_legacy_normal),
KUNIT_CASE(cros_ec_proto_test_prepare_tx_legacy_bad_msg_outsize),
KUNIT_CASE(cros_ec_proto_test_prepare_tx_normal),
KUNIT_CASE(cros_ec_proto_test_prepare_tx_bad_msg_outsize),
KUNIT_CASE(cros_ec_proto_test_check_result),
+ KUNIT_CASE(cros_ec_proto_test_query_all_normal),
+ KUNIT_CASE(cros_ec_proto_test_query_all_no_pd_return_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_legacy_normal_v3_return_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_legacy_xfer_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_legacy_data_error),
+ KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp),
+ KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep),
+ KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return_error),
{}
};

static struct kunit_suite cros_ec_proto_test_suite = {
.name = "cros_ec_proto_test",
.init = cros_ec_proto_test_init,
+ .exit = cros_ec_proto_test_exit,
.test_cases = cros_ec_proto_test_cases,
};

diff --git a/drivers/platform/chrome/cros_kunit_util.c b/drivers/platform/chrome/cros_kunit_util.c
new file mode 100644
index 000000000000..e031777dea87
--- /dev/null
+++ b/drivers/platform/chrome/cros_kunit_util.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * CrOS Kunit tests utilities.
+ */
+
+#include <kunit/test.h>
+
+#include <linux/list.h>
+#include <linux/minmax.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
+
+#include "cros_ec.h"
+#include "cros_kunit_util.h"
+
+int cros_kunit_ec_xfer_mock_default_ret;
+EXPORT_SYMBOL_GPL(cros_kunit_ec_xfer_mock_default_ret);
+
+static struct list_head cros_kunit_ec_xfer_mock_in;
+static struct list_head cros_kunit_ec_xfer_mock_out;
+
+int cros_kunit_ec_xfer_mock(struct cros_ec_device *ec_dev, struct cros_ec_command *msg)
+{
+ struct ec_xfer_mock *mock;
+
+ mock = list_first_entry_or_null(&cros_kunit_ec_xfer_mock_in, struct ec_xfer_mock, list);
+ if (!mock)
+ return cros_kunit_ec_xfer_mock_default_ret;
+
+ list_del(&mock->list);
+
+ memcpy(&mock->msg, msg, sizeof(*msg));
+ if (msg->outsize) {
+ mock->i_data = kunit_kzalloc(mock->test, msg->outsize, GFP_KERNEL);
+ if (mock->i_data)
+ memcpy(mock->i_data, msg->data, msg->outsize);
+ }
+
+ msg->result = mock->result;
+ if (msg->insize)
+ memcpy(msg->data, mock->o_data, min(msg->insize, mock->o_data_len));
+
+ list_add_tail(&mock->list, &cros_kunit_ec_xfer_mock_out);
+
+ return mock->ret;
+}
+EXPORT_SYMBOL_GPL(cros_kunit_ec_xfer_mock);
+
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_add(struct kunit *test, size_t size)
+{
+ return cros_kunit_ec_xfer_mock_addx(test, size, EC_RES_SUCCESS, size);
+}
+EXPORT_SYMBOL_GPL(cros_kunit_ec_xfer_mock_add);
+
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_addx(struct kunit *test,
+ int ret, int result, size_t size)
+{
+ struct ec_xfer_mock *mock;
+
+ mock = kunit_kzalloc(test, sizeof(*mock), GFP_KERNEL);
+ if (!mock)
+ return NULL;
+
+ list_add_tail(&mock->list, &cros_kunit_ec_xfer_mock_in);
+ mock->test = test;
+
+ mock->ret = ret;
+ mock->result = result;
+ mock->o_data = kunit_kzalloc(test, size, GFP_KERNEL);
+ if (!mock->o_data)
+ return NULL;
+ mock->o_data_len = size;
+
+ return mock;
+}
+EXPORT_SYMBOL_GPL(cros_kunit_ec_xfer_mock_addx);
+
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_next(void)
+{
+ struct ec_xfer_mock *mock;
+
+ mock = list_first_entry_or_null(&cros_kunit_ec_xfer_mock_out, struct ec_xfer_mock, list);
+ if (mock)
+ list_del(&mock->list);
+
+ return mock;
+}
+EXPORT_SYMBOL_GPL(cros_kunit_ec_xfer_mock_next);
+
+void cros_kunit_mock_reset(void)
+{
+ cros_kunit_ec_xfer_mock_default_ret = 0;
+ INIT_LIST_HEAD(&cros_kunit_ec_xfer_mock_in);
+ INIT_LIST_HEAD(&cros_kunit_ec_xfer_mock_out);
+}
+EXPORT_SYMBOL_GPL(cros_kunit_mock_reset);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/chrome/cros_kunit_util.h b/drivers/platform/chrome/cros_kunit_util.h
new file mode 100644
index 000000000000..79c4525f873c
--- /dev/null
+++ b/drivers/platform/chrome/cros_kunit_util.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * CrOS Kunit tests utilities.
+ */
+
+#ifndef _CROS_KUNIT_UTIL_H_
+#define _CROS_KUNIT_UTIL_H_
+
+#include <linux/platform_data/cros_ec_proto.h>
+
+struct ec_xfer_mock {
+ struct list_head list;
+ struct kunit *test;
+
+ /* input */
+ struct cros_ec_command msg;
+ void *i_data;
+
+ /* output */
+ int ret;
+ int result;
+ void *o_data;
+ u32 o_data_len;
+};
+
+extern int cros_kunit_ec_xfer_mock_default_ret;
+
+int cros_kunit_ec_xfer_mock(struct cros_ec_device *ec_dev, struct cros_ec_command *msg);
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_add(struct kunit *test, size_t size);
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_addx(struct kunit *test,
+ int ret, int result, size_t size);
+struct ec_xfer_mock *cros_kunit_ec_xfer_mock_next(void);
+
+void cros_kunit_mock_reset(void);
+
+#endif
--
2.36.1.255.ge46751e96f-goog
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