[PATCH 07/10] test: dm: add SCMI base protocol test

[AKASHI Takahiro]

Added is a new unit test for SCMI base protocol, which will exercise all
the commands provided by the protocol, except SCMI_BASE_NOTIFY_ERRORS.
  $ ut dm scmi_base
It is assumed that test.dtb is used as sandbox's device tree.

Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
---
 test/dm/scmi.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)

diff --git a/test/dm/scmi.c b/test/dm/scmi.c
index 881be3171b7c..563017bb63e0 100644
--- a/test/dm/scmi.c
+++ b/test/dm/scmi.c
@@ -16,6 +16,9 @@
 #include <clk.h>
 #include <dm.h>
 #include <reset.h>
+#include <scmi_agent.h>
+#include <scmi_agent-uclass.h>
+#include <scmi_protocols.h>
 #include <asm/scmi_test.h>
 #include <dm/device-internal.h>
 #include <dm/test.h>
@@ -95,6 +98,115 @@ static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
 }
 DM_TEST(dm_test_scmi_sandbox_agent, UT_TESTF_SCAN_FDT);
 
+static int dm_test_scmi_base(struct unit_test_state *uts)
+{
+	struct udevice *agent_dev, *base;
+	struct scmi_agent_priv *priv;
+	const struct scmi_base_ops *ops;
+	u32 version, num_agents, num_protocols, impl_version;
+	u32 attributes, agent_id;
+	char vendor[SCMI_BASE_NAME_LENGTH_MAX],
+	     agent_name[SCMI_BASE_NAME_LENGTH_MAX];
+	u8 *protocols;
+	int ret;
+
+	/* preparation */
+	ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
+					      &agent_dev));
+	ut_assertnonnull(agent_dev);
+	ut_assertnonnull(priv = dev_get_uclass_plat(agent_dev));
+	ut_assertnonnull(base = scmi_get_protocol(agent_dev,
+						  SCMI_PROTOCOL_ID_BASE));
+	ut_assertnonnull(ops = dev_get_driver_ops(base));
+
+	/* version */
+	ret = (*ops->protocol_version)(base, &version);
+	ut_assertok(ret);
+	ut_asserteq(priv->version, version);
+
+	/* protocol attributes */
+	ret = (*ops->protocol_attrs)(base, &num_agents, &num_protocols);
+	ut_assertok(ret);
+	ut_asserteq(priv->num_agents, num_agents);
+	ut_asserteq(priv->num_protocols, num_protocols);
+
+	/* discover vendor */
+	ret = (*ops->base_discover_vendor)(base, vendor);
+	ut_assertok(ret);
+	ut_asserteq_str(priv->vendor, vendor);
+
+	/* message attributes */
+	ret = (*ops->protocol_message_attrs)(base,
+					     SCMI_BASE_DISCOVER_SUB_VENDOR,
+					     &attributes);
+	ut_assertok(ret);
+	ut_assertok(attributes);
+
+	/* discover sub vendor */
+	ret = (*ops->base_discover_sub_vendor)(base, vendor);
+	ut_assertok(ret);
+	ut_asserteq_str(priv->sub_vendor, vendor);
+
+	/* impl version */
+	ret = (*ops->base_discover_impl_version)(base, &impl_version);
+	ut_assertok(ret);
+	ut_asserteq(priv->impl_version, impl_version);
+
+	/* discover agent (my self) */
+	ret = (*ops->base_discover_agent)(base, 0xffffffff,
+					  &agent_id, agent_name);
+	ut_assertok(ret);
+	ut_asserteq(priv->agent_id, agent_id);
+	ut_asserteq_str(priv->agent_name, agent_name);
+
+	/* discover protocols */
+	ret = (*ops->base_discover_list_protocols)(base, &protocols);
+	ut_asserteq(num_protocols, ret);
+	ut_asserteq_mem(priv->protocols, protocols, sizeof(u8) * num_protocols);
+	free(protocols);
+
+	/*
+	 * NOTE: Sandbox SCMI driver handles device-0 only. It supports setting
+	 * access and protocol permissions, but doesn't allow unsetting them nor
+	 * resetting the configurations.
+	 */
+	/* set device permissions */
+	ret = (*ops->base_set_device_permissions)(base, agent_id, 0,
+						  SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
+	ut_assertok(ret); /* SCMI_SUCCESS */
+	ret = (*ops->base_set_device_permissions)(base, agent_id, 1,
+						  SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
+	ut_asserteq(-ENOENT, ret); /* SCMI_NOT_FOUND */
+	ret = (*ops->base_set_device_permissions)(base, agent_id, 0, 0);
+	ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
+
+	/* set protocol permissions */
+	ret = (*ops->base_set_protocol_permissions)(base, agent_id, 0,
+						    SCMI_PROTOCOL_ID_CLOCK,
+						    SCMI_BASE_SET_PROTOCOL_PERMISSIONS_ACCESS);
+	ut_assertok(ret); /* SCMI_SUCCESS */
+	ret = (*ops->base_set_protocol_permissions)(base, agent_id, 1,
+						    SCMI_PROTOCOL_ID_CLOCK,
+						    SCMI_BASE_SET_PROTOCOL_PERMISSIONS_ACCESS);
+	ut_asserteq(-ENOENT, ret); /* SCMI_NOT_FOUND */
+	ret = (*ops->base_set_protocol_permissions)(base, agent_id, 0,
+						    SCMI_PROTOCOL_ID_CLOCK, 0);
+	ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
+
+	/* reset agent configuration */
+	ret = (*ops->base_reset_agent_configuration)(base, agent_id, 0);
+	ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
+	ret = (*ops->base_reset_agent_configuration)(base, agent_id,
+						     SCMI_BASE_RESET_ALL_ACCESS_PERMISSIONS);
+	ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
+	ret = (*ops->base_reset_agent_configuration)(base, agent_id, 0);
+	ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
+
+	return 0;
+}
+
+DM_TEST(dm_test_scmi_base, UT_TESTF_SCAN_FDT);
+
 static int dm_test_scmi_clocks(struct unit_test_state *uts)
 {
 	struct sandbox_scmi_agent *agent;
-- 
2.41.0