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 agent 1. Protocol 0x10 is not
9 * implemented in U-Boot SCMI components but the implementation is exepected
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 <test/ut.h>
24
ut_assert_scmi_state_preprobe(struct unit_test_state * uts)25 static int ut_assert_scmi_state_preprobe(struct unit_test_state *uts)
26 {
27 struct sandbox_scmi_service *scmi_ctx = sandbox_scmi_service_ctx();
28
29 ut_assertnonnull(scmi_ctx);
30 if (scmi_ctx->agent_count)
31 ut_asserteq(2, scmi_ctx->agent_count);
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
42 /* Device references to check context against test sequence */
43 scmi_devices = sandbox_scmi_devices_ctx(dev);
44
45 ut_assertnonnull(scmi_devices);
46 if (IS_ENABLED(CONFIG_CLK_SCMI))
47 ut_asserteq(3, scmi_devices->clk_count);
48 if (IS_ENABLED(CONFIG_RESET_SCMI))
49 ut_asserteq(1, scmi_devices->reset_count);
50
51 /* State of the simulated SCMI server exposed */
52 scmi_ctx = sandbox_scmi_service_ctx();
53
54 ut_asserteq(2, scmi_ctx->agent_count);
55
56 ut_assertnonnull(scmi_ctx->agent[0]);
57 ut_asserteq(2, scmi_ctx->agent[0]->clk_count);
58 ut_assertnonnull(scmi_ctx->agent[0]->clk);
59 ut_asserteq(1, scmi_ctx->agent[0]->reset_count);
60 ut_assertnonnull(scmi_ctx->agent[0]->reset);
61
62 ut_assertnonnull(scmi_ctx->agent[1]);
63 ut_assertnonnull(scmi_ctx->agent[1]->clk);
64 ut_asserteq(1, scmi_ctx->agent[1]->clk_count);
65
66 return 0;
67 }
68
load_sandbox_scmi_test_devices(struct unit_test_state * uts,struct udevice ** dev)69 static int load_sandbox_scmi_test_devices(struct unit_test_state *uts,
70 struct udevice **dev)
71 {
72 int ret;
73
74 ret = ut_assert_scmi_state_preprobe(uts);
75 if (ret)
76 return ret;
77
78 ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "sandbox_scmi",
79 dev));
80 ut_assertnonnull(*dev);
81
82 return ut_assert_scmi_state_postprobe(uts, *dev);
83 }
84
release_sandbox_scmi_test_devices(struct unit_test_state * uts,struct udevice * dev)85 static int release_sandbox_scmi_test_devices(struct unit_test_state *uts,
86 struct udevice *dev)
87 {
88 ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
89
90 /* Not sure test devices are fully removed, agent may not be visible */
91 return 0;
92 }
93
94 /*
95 * Test SCMI states when loading and releasing resources
96 * related to SCMI drivers.
97 */
dm_test_scmi_sandbox_agent(struct unit_test_state * uts)98 static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
99 {
100 struct udevice *dev = NULL;
101 int ret;
102
103 ret = load_sandbox_scmi_test_devices(uts, &dev);
104 if (!ret)
105 ret = release_sandbox_scmi_test_devices(uts, dev);
106
107 return ret;
108 }
109
110 DM_TEST(dm_test_scmi_sandbox_agent, UT_TESTF_SCAN_FDT);
111
dm_test_scmi_clocks(struct unit_test_state * uts)112 static int dm_test_scmi_clocks(struct unit_test_state *uts)
113 {
114 struct sandbox_scmi_devices *scmi_devices;
115 struct sandbox_scmi_service *scmi_ctx;
116 struct udevice *dev = NULL;
117 int ret_dev;
118 int ret;
119
120 if (!IS_ENABLED(CONFIG_CLK_SCMI))
121 return 0;
122
123 ret = load_sandbox_scmi_test_devices(uts, &dev);
124 if (ret)
125 return ret;
126
127 scmi_devices = sandbox_scmi_devices_ctx(dev);
128 scmi_ctx = sandbox_scmi_service_ctx();
129
130 /* Test SCMI clocks rate manipulation */
131 ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
132 ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
133 ut_asserteq(44, clk_get_rate(&scmi_devices->clk[2]));
134
135 ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
136 ut_assert(!ret_dev || ret_dev == 1088);
137
138 ut_asserteq(1000, scmi_ctx->agent[0]->clk[0].rate);
139 ut_asserteq(1088, scmi_ctx->agent[0]->clk[1].rate);
140 ut_asserteq(44, scmi_ctx->agent[1]->clk[0].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 ut_asserteq(44, clk_get_rate(&scmi_devices->clk[2]));
145
146 /* restore original rate for further tests */
147 ret_dev = clk_set_rate(&scmi_devices->clk[1], 333);
148 ut_assert(!ret_dev || ret_dev == 333);
149
150 /* Test SCMI clocks gating manipulation */
151 ut_assert(!scmi_ctx->agent[0]->clk[0].enabled);
152 ut_assert(!scmi_ctx->agent[0]->clk[1].enabled);
153 ut_assert(!scmi_ctx->agent[1]->clk[0].enabled);
154
155 ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
156 ut_asserteq(0, clk_enable(&scmi_devices->clk[2]));
157
158 ut_assert(!scmi_ctx->agent[0]->clk[0].enabled);
159 ut_assert(scmi_ctx->agent[0]->clk[1].enabled);
160 ut_assert(scmi_ctx->agent[1]->clk[0].enabled);
161
162 ut_assertok(clk_disable(&scmi_devices->clk[1]));
163 ut_assertok(clk_disable(&scmi_devices->clk[2]));
164
165 ut_assert(!scmi_ctx->agent[0]->clk[0].enabled);
166 ut_assert(!scmi_ctx->agent[0]->clk[1].enabled);
167 ut_assert(!scmi_ctx->agent[1]->clk[0].enabled);
168
169 return release_sandbox_scmi_test_devices(uts, dev);
170 }
171
172 DM_TEST(dm_test_scmi_clocks, UT_TESTF_SCAN_FDT);
173
dm_test_scmi_resets(struct unit_test_state * uts)174 static int dm_test_scmi_resets(struct unit_test_state *uts)
175 {
176 struct sandbox_scmi_devices *scmi_devices;
177 struct sandbox_scmi_service *scmi_ctx;
178 struct udevice *dev = NULL;
179 int ret;
180
181 if (!IS_ENABLED(CONFIG_RESET_SCMI))
182 return 0;
183
184 ret = load_sandbox_scmi_test_devices(uts, &dev);
185 if (ret)
186 return ret;
187
188 scmi_devices = sandbox_scmi_devices_ctx(dev);
189 scmi_ctx = sandbox_scmi_service_ctx();
190
191 /* Test SCMI resect controller manipulation */
192 ut_assert(!scmi_ctx->agent[0]->reset[0].asserted)
193
194 ut_assertok(reset_assert(&scmi_devices->reset[0]));
195 ut_assert(scmi_ctx->agent[0]->reset[0].asserted)
196
197 ut_assertok(reset_deassert(&scmi_devices->reset[0]));
198 ut_assert(!scmi_ctx->agent[0]->reset[0].asserted);
199
200 return release_sandbox_scmi_test_devices(uts, dev);
201 }
202
203 DM_TEST(dm_test_scmi_resets, UT_TESTF_SCAN_FDT);
204