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smaeul-u-boot/test/dm/scmi.c
AKASHI Takahiro 93ecae9eea test: dm: add SCMI base protocol test 
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@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-13 16:59:24 -04:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020, Linaro Limited
*
* Tests scmi_agent uclass and the SCMI drivers implemented in other
* uclass devices probe when a SCMI server exposes resources.
*
* Note in test.dts the protocol@10 node in scmi node. Protocol 0x10 is not
* implemented in U-Boot SCMI components but the implementation is expected
* to not complain on unknown protocol IDs, as long as it is not used. Note
* in test.dts tests that SCMI drivers probing does not fail for such an
* unknown SCMI protocol ID.
*/
#include <common.h>
#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>
#include <linux/kconfig.h>
#include <power/regulator.h>
#include <test/ut.h>
static int ut_assert_scmi_state_postprobe(struct unit_test_state *uts,
struct sandbox_scmi_agent *agent,
struct udevice *dev)
{
struct sandbox_scmi_devices *scmi_devices;
/* Device references to check context against test sequence */
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
ut_asserteq(2, scmi_devices->clk_count);
ut_asserteq(1, scmi_devices->reset_count);
ut_asserteq(2, scmi_devices->regul_count);
/* State of the simulated SCMI server exposed */
ut_asserteq(3, agent->clk_count);
ut_assertnonnull(agent->clk);
ut_asserteq(1, agent->reset_count);
ut_assertnonnull(agent->reset);
ut_asserteq(2, agent->voltd_count);
ut_assertnonnull(agent->voltd);
return 0;
}
static int load_sandbox_scmi_test_devices(struct unit_test_state *uts,
struct sandbox_scmi_agent **ctx,
struct udevice **dev)
{
struct udevice *agent_dev;
ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
&agent_dev));
ut_assertnonnull(agent_dev);
*ctx = sandbox_scmi_agent_ctx(agent_dev);
ut_assertnonnull(*ctx);
/* probe */
ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "sandbox_scmi",
dev));
ut_assertnonnull(*dev);
return ut_assert_scmi_state_postprobe(uts, *ctx, *dev);
}
static int release_sandbox_scmi_test_devices(struct unit_test_state *uts,
struct udevice *dev)
{
/* un-probe */
ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
return 0;
}
/*
* Test SCMI states when loading and releasing resources
* related to SCMI drivers.
*/
static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
{
struct sandbox_scmi_agent *ctx;
struct udevice *dev = NULL;
int ret;
ret = load_sandbox_scmi_test_devices(uts, &ctx, &dev);
if (!ret)
ret = release_sandbox_scmi_test_devices(uts, dev);
return ret;
}
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;
u32 version, num_agents, num_protocols, impl_version;
u32 attributes, agent_id;
u8 *vendor, *agent_name, *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));
/* version */
ret = scmi_base_protocol_version(base, &version);
ut_assertok(ret);
ut_asserteq(priv->version, version);
/* protocol attributes */
ret = scmi_base_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 = scmi_base_discover_vendor(base, &vendor);
ut_assertok(ret);
ut_asserteq_str(priv->vendor, vendor);
free(vendor);
/* message attributes */
ret = scmi_base_protocol_message_attrs(base,
SCMI_BASE_DISCOVER_SUB_VENDOR,
&attributes);
ut_assertok(ret);
ut_assertok(attributes);
/* discover sub vendor */
ret = scmi_base_discover_sub_vendor(base, &vendor);
ut_assertok(ret);
ut_asserteq_str(priv->sub_vendor, vendor);
free(vendor);
/* impl version */
ret = scmi_base_discover_impl_version(base, &impl_version);
ut_assertok(ret);
ut_asserteq(priv->impl_version, impl_version);
/* discover agent (my self) */
ret = scmi_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);
free(agent_name);
/* discover protocols */
ret = scmi_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 = scmi_base_set_device_permissions(base, agent_id, 0,
SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
ut_assertok(ret); /* SCMI_SUCCESS */
ret = scmi_base_set_device_permissions(base, agent_id, 1,
SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
ut_asserteq(-ENOENT, ret); /* SCMI_NOT_FOUND */
ret = scmi_base_set_device_permissions(base, agent_id, 0, 0);
ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
/* set protocol permissions */
ret = scmi_base_set_protocol_permissions(base, agent_id, 0,
SCMI_PROTOCOL_ID_CLOCK,
SCMI_BASE_SET_PROTOCOL_PERMISSIONS_ACCESS);
ut_assertok(ret); /* SCMI_SUCCESS */
ret = scmi_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 = scmi_base_set_protocol_permissions(base, agent_id, 0,
SCMI_PROTOCOL_ID_CLOCK, 0);
ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
/* reset agent configuration */
ret = scmi_base_reset_agent_configuration(base, agent_id, 0);
ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
ret = scmi_base_reset_agent_configuration(base, agent_id,
SCMI_BASE_RESET_ALL_ACCESS_PERMISSIONS);
ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
ret = scmi_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;
struct sandbox_scmi_devices *scmi_devices;
struct udevice *agent_dev, *clock_dev, *dev;
int ret_dev;
int ret;
ret = load_sandbox_scmi_test_devices(uts, &agent, &dev);
if (ret)
return ret;
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
/* Sandbox SCMI clock protocol has its own channel */
ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
&agent_dev));
ut_assertnonnull(agent_dev);
clock_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_CLOCK);
ut_assertnonnull(clock_dev);
ut_asserteq(0x14, sandbox_scmi_channel_id(clock_dev));
/* Test SCMI clocks rate manipulation */
ut_asserteq(333, agent->clk[0].rate);
ut_asserteq(200, agent->clk[1].rate);
ut_asserteq(1000, agent->clk[2].rate);
ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
ut_assert(!ret_dev || ret_dev == 1088);
ut_asserteq(1088, agent->clk[0].rate);
ut_asserteq(200, agent->clk[1].rate);
ut_asserteq(1000, agent->clk[2].rate);
ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
ut_asserteq(1088, clk_get_rate(&scmi_devices->clk[1]));
/* restore original rate for further tests */
ret_dev = clk_set_rate(&scmi_devices->clk[1], 333);
ut_assert(!ret_dev || ret_dev == 333);
/* Test SCMI clocks gating manipulation */
ut_assert(!agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].enabled);
ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
ut_assert(agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].enabled);
ut_assertok(clk_disable(&scmi_devices->clk[1]));
ut_assert(!agent->clk[0].enabled);
ut_assert(!agent->clk[1].enabled);
ut_assert(!agent->clk[2].enabled);
return release_sandbox_scmi_test_devices(uts, dev);
}
DM_TEST(dm_test_scmi_clocks, UT_TESTF_SCAN_FDT);
static int dm_test_scmi_resets(struct unit_test_state *uts)
{
struct sandbox_scmi_agent *agent;
struct sandbox_scmi_devices *scmi_devices;
struct udevice *agent_dev, *reset_dev, *dev = NULL;
int ret;
ret = load_sandbox_scmi_test_devices(uts, &agent, &dev);
if (ret)
return ret;
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
/* Sandbox SCMI reset protocol doesn't have its own channel */
ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
&agent_dev));
ut_assertnonnull(agent_dev);
reset_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_RESET_DOMAIN);
ut_assertnonnull(reset_dev);
ut_asserteq(0x0, sandbox_scmi_channel_id(reset_dev));
/* Test SCMI resect controller manipulation */
ut_assert(!agent->reset[0].asserted);
ut_assertok(reset_assert(&scmi_devices->reset[0]));
ut_assert(agent->reset[0].asserted);
ut_assertok(reset_deassert(&scmi_devices->reset[0]));
ut_assert(!agent->reset[0].asserted);
return release_sandbox_scmi_test_devices(uts, dev);
}
DM_TEST(dm_test_scmi_resets, UT_TESTF_SCAN_FDT);
static int dm_test_scmi_voltage_domains(struct unit_test_state *uts)
{
struct sandbox_scmi_agent *agent;
struct sandbox_scmi_devices *scmi_devices;
struct dm_regulator_uclass_plat *uc_pdata;
struct udevice *dev;
struct udevice *regul0_dev;
ut_assertok(load_sandbox_scmi_test_devices(uts, &agent, &dev));
scmi_devices = sandbox_scmi_devices_ctx(dev);
ut_assertnonnull(scmi_devices);
/* Set/Get an SCMI voltage domain level */
regul0_dev = scmi_devices->regul[0];
ut_assert(regul0_dev);
uc_pdata = dev_get_uclass_plat(regul0_dev);
ut_assert(uc_pdata);
ut_assertok(regulator_set_value(regul0_dev, uc_pdata->min_uV));
ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->min_uV);
ut_assert(regulator_get_value(regul0_dev) == uc_pdata->min_uV);
ut_assertok(regulator_set_value(regul0_dev, uc_pdata->max_uV));
ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->max_uV);
ut_assert(regulator_get_value(regul0_dev) == uc_pdata->max_uV);
/* Enable/disable SCMI voltage domains */
ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
ut_assertok(regulator_set_enable(scmi_devices->regul[1], false));
ut_assert(!agent->voltd[0].enabled);
ut_assert(!agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[0], true));
ut_assert(agent->voltd[0].enabled);
ut_assert(!agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[1], true));
ut_assert(agent->voltd[0].enabled);
ut_assert(agent->voltd[1].enabled);
ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
ut_assert(!agent->voltd[0].enabled);
ut_assert(agent->voltd[1].enabled);
return release_sandbox_scmi_test_devices(uts, dev);
}
DM_TEST(dm_test_scmi_voltage_domains, UT_TESTF_SCAN_FDT);
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