1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2020, Linaro Limited
4 *
5 * Tests scmi_agent uclass and the SCMI drivers implemented in other
6 * uclass devices probe when a SCMI server exposes resources.
7 *
8 * Note in test.dts the protocol@10 node in scmi node. Protocol 0x10 is not
9 * implemented in U-Boot SCMI components but the implementation is expected
10 * to not complain on unknown protocol IDs, as long as it is not used. Note
11 * in test.dts tests that SCMI drivers probing does not fail for such an
12 * unknown SCMI protocol ID.
13 */
14
15 #include <common.h>
16 #include <clk.h>
17 #include <dm.h>
18 #include <reset.h>
19 #include <asm/scmi_test.h>
20 #include <dm/device-internal.h>
21 #include <dm/test.h>
22 #include <linux/kconfig.h>
23 #include <power/regulator.h>
24 #include <test/ut.h>
25
ut_assert_scmi_state_preprobe(struct unit_test_state * uts)26 static int ut_assert_scmi_state_preprobe(struct unit_test_state *uts)
27 {
28 struct sandbox_scmi_service *scmi_ctx = sandbox_scmi_service_ctx();
29
30 ut_assertnonnull(scmi_ctx);
31 ut_assertnull(scmi_ctx->agent);
32
33 return 0;
34 }
35
ut_assert_scmi_state_postprobe(struct unit_test_state * uts,struct udevice * dev)36 static int ut_assert_scmi_state_postprobe(struct unit_test_state *uts,
37 struct udevice *dev)
38 {
39 struct sandbox_scmi_devices *scmi_devices;
40 struct sandbox_scmi_service *scmi_ctx;
41 struct sandbox_scmi_agent *agent;
42
43 /* Device references to check context against test sequence */
44 scmi_devices = sandbox_scmi_devices_ctx(dev);
45 ut_assertnonnull(scmi_devices);
46 ut_asserteq(2, scmi_devices->clk_count);
47 ut_asserteq(1, scmi_devices->reset_count);
48 ut_asserteq(2, scmi_devices->regul_count);
49
50 /* State of the simulated SCMI server exposed */
51 scmi_ctx = sandbox_scmi_service_ctx();
52 ut_assertnonnull(scmi_ctx);
53 agent = scmi_ctx->agent;
54 ut_assertnonnull(agent);
55 ut_asserteq(3, agent->clk_count);
56 ut_assertnonnull(agent->clk);
57 ut_asserteq(1, agent->reset_count);
58 ut_assertnonnull(agent->reset);
59 ut_asserteq(2, agent->voltd_count);
60 ut_assertnonnull(agent->voltd);
61
62 return 0;
63 }
64
load_sandbox_scmi_test_devices(struct unit_test_state * uts,struct udevice ** dev)65 static int load_sandbox_scmi_test_devices(struct unit_test_state *uts,
66 struct udevice **dev)
67 {
68 int ret;
69
70 ret = ut_assert_scmi_state_preprobe(uts);
71 if (ret)
72 return ret;
73
74 ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "sandbox_scmi",
75 dev));
76 ut_assertnonnull(*dev);
77
78 return ut_assert_scmi_state_postprobe(uts, *dev);
79 }
80
release_sandbox_scmi_test_devices(struct unit_test_state * uts,struct udevice * dev)81 static int release_sandbox_scmi_test_devices(struct unit_test_state *uts,
82 struct udevice *dev)
83 {
84 ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
85
86 /* Not sure test devices are fully removed, agent may not be visible */
87 return 0;
88 }
89
90 /*
91 * Test SCMI states when loading and releasing resources
92 * related to SCMI drivers.
93 */
dm_test_scmi_sandbox_agent(struct unit_test_state * uts)94 static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
95 {
96 struct udevice *dev = NULL;
97 int ret;
98
99 ret = load_sandbox_scmi_test_devices(uts, &dev);
100 if (!ret)
101 ret = release_sandbox_scmi_test_devices(uts, dev);
102
103 return ret;
104 }
105 DM_TEST(dm_test_scmi_sandbox_agent, UT_TESTF_SCAN_FDT);
106
dm_test_scmi_clocks(struct unit_test_state * uts)107 static int dm_test_scmi_clocks(struct unit_test_state *uts)
108 {
109 struct sandbox_scmi_devices *scmi_devices;
110 struct sandbox_scmi_service *scmi_ctx;
111 struct sandbox_scmi_agent *agent;
112 struct udevice *dev;
113 int ret_dev;
114 int ret;
115
116 ret = load_sandbox_scmi_test_devices(uts, &dev);
117 if (ret)
118 return ret;
119
120 scmi_devices = sandbox_scmi_devices_ctx(dev);
121 ut_assertnonnull(scmi_devices);
122 scmi_ctx = sandbox_scmi_service_ctx();
123 ut_assertnonnull(scmi_ctx);
124 agent = scmi_ctx->agent;
125 ut_assertnonnull(agent);
126
127 /* Test SCMI clocks rate manipulation */
128 ut_asserteq(333, agent->clk[0].rate);
129 ut_asserteq(200, agent->clk[1].rate);
130 ut_asserteq(1000, agent->clk[2].rate);
131
132 ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
133 ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
134
135 ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
136 ut_assert(!ret_dev || ret_dev == 1088);
137
138 ut_asserteq(1088, agent->clk[0].rate);
139 ut_asserteq(200, agent->clk[1].rate);
140 ut_asserteq(1000, agent->clk[2].rate);
141
142 ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
143 ut_asserteq(1088, clk_get_rate(&scmi_devices->clk[1]));
144
145 /* restore original rate for further tests */
146 ret_dev = clk_set_rate(&scmi_devices->clk[1], 333);
147 ut_assert(!ret_dev || ret_dev == 333);
148
149 /* Test SCMI clocks gating manipulation */
150 ut_assert(!agent->clk[0].enabled);
151 ut_assert(!agent->clk[1].enabled);
152 ut_assert(!agent->clk[2].enabled);
153
154 ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
155
156 ut_assert(agent->clk[0].enabled);
157 ut_assert(!agent->clk[1].enabled);
158 ut_assert(!agent->clk[2].enabled);
159
160 ut_assertok(clk_disable(&scmi_devices->clk[1]));
161
162 ut_assert(!agent->clk[0].enabled);
163 ut_assert(!agent->clk[1].enabled);
164 ut_assert(!agent->clk[2].enabled);
165
166 return release_sandbox_scmi_test_devices(uts, dev);
167 }
168 DM_TEST(dm_test_scmi_clocks, UT_TESTF_SCAN_FDT);
169
dm_test_scmi_resets(struct unit_test_state * uts)170 static int dm_test_scmi_resets(struct unit_test_state *uts)
171 {
172 struct sandbox_scmi_devices *scmi_devices;
173 struct sandbox_scmi_service *scmi_ctx;
174 struct sandbox_scmi_agent *agent;
175 struct udevice *dev = NULL;
176 int ret;
177
178 ret = load_sandbox_scmi_test_devices(uts, &dev);
179 if (ret)
180 return ret;
181
182 scmi_devices = sandbox_scmi_devices_ctx(dev);
183 ut_assertnonnull(scmi_devices);
184 scmi_ctx = sandbox_scmi_service_ctx();
185 ut_assertnonnull(scmi_ctx);
186 agent = scmi_ctx->agent;
187 ut_assertnonnull(agent);
188
189 /* Test SCMI resect controller manipulation */
190 ut_assert(!agent->reset[0].asserted);
191
192 ut_assertok(reset_assert(&scmi_devices->reset[0]));
193 ut_assert(agent->reset[0].asserted);
194
195 ut_assertok(reset_deassert(&scmi_devices->reset[0]));
196 ut_assert(!agent->reset[0].asserted);
197
198 return release_sandbox_scmi_test_devices(uts, dev);
199 }
200 DM_TEST(dm_test_scmi_resets, UT_TESTF_SCAN_FDT);
201
dm_test_scmi_voltage_domains(struct unit_test_state * uts)202 static int dm_test_scmi_voltage_domains(struct unit_test_state *uts)
203 {
204 struct sandbox_scmi_devices *scmi_devices;
205 struct sandbox_scmi_service *scmi_ctx;
206 struct sandbox_scmi_agent *agent;
207 struct dm_regulator_uclass_plat *uc_pdata;
208 struct udevice *dev;
209 struct udevice *regul0_dev;
210
211 ut_assertok(load_sandbox_scmi_test_devices(uts, &dev));
212
213 scmi_devices = sandbox_scmi_devices_ctx(dev);
214 ut_assertnonnull(scmi_devices);
215 scmi_ctx = sandbox_scmi_service_ctx();
216 ut_assertnonnull(scmi_ctx);
217 agent = scmi_ctx->agent;
218 ut_assertnonnull(agent);
219
220 /* Set/Get an SCMI voltage domain level */
221 regul0_dev = scmi_devices->regul[0];
222 ut_assert(regul0_dev);
223
224 uc_pdata = dev_get_uclass_plat(regul0_dev);
225 ut_assert(uc_pdata);
226
227 ut_assertok(regulator_set_value(regul0_dev, uc_pdata->min_uV));
228 ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->min_uV);
229
230 ut_assert(regulator_get_value(regul0_dev) == uc_pdata->min_uV);
231
232 ut_assertok(regulator_set_value(regul0_dev, uc_pdata->max_uV));
233 ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->max_uV);
234
235 ut_assert(regulator_get_value(regul0_dev) == uc_pdata->max_uV);
236
237 /* Enable/disable SCMI voltage domains */
238 ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
239 ut_assertok(regulator_set_enable(scmi_devices->regul[1], false));
240 ut_assert(!agent->voltd[0].enabled);
241 ut_assert(!agent->voltd[1].enabled);
242
243 ut_assertok(regulator_set_enable(scmi_devices->regul[0], true));
244 ut_assert(agent->voltd[0].enabled);
245 ut_assert(!agent->voltd[1].enabled);
246
247 ut_assertok(regulator_set_enable(scmi_devices->regul[1], true));
248 ut_assert(agent->voltd[0].enabled);
249 ut_assert(agent->voltd[1].enabled);
250
251 ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
252 ut_assert(!agent->voltd[0].enabled);
253 ut_assert(agent->voltd[1].enabled);
254
255 return release_sandbox_scmi_test_devices(uts, dev);
256 }
257 DM_TEST(dm_test_scmi_voltage_domains, UT_TESTF_SCAN_FDT);
258