xref: /linux/drivers/platform/chrome/cros_ec_proto_test.c (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Kunit tests for ChromeOS Embedded Controller protocol.
4  */
5 
6 #include <kunit/test.h>
7 
8 #include <linux/unaligned.h>
9 
10 #include <linux/platform_data/cros_ec_commands.h>
11 #include <linux/platform_data/cros_ec_proto.h>
12 
13 #include "cros_ec.h"
14 #include "cros_ec_proto_test_util.h"
15 
16 #define BUFSIZE 512
17 
18 struct cros_ec_proto_test_priv {
19 	struct cros_ec_device ec_dev;
20 	u8 dout[BUFSIZE];
21 	u8 din[BUFSIZE];
22 	struct cros_ec_command *msg;
23 	u8 _msg[BUFSIZE];
24 };
25 
26 static void cros_ec_proto_test_prepare_tx_legacy_normal(struct kunit *test)
27 {
28 	struct cros_ec_proto_test_priv *priv = test->priv;
29 	struct cros_ec_device *ec_dev = &priv->ec_dev;
30 	struct cros_ec_command *msg = priv->msg;
31 	int ret, i;
32 	u8 csum;
33 
34 	ec_dev->proto_version = 2;
35 
36 	msg->command = EC_CMD_HELLO;
37 	msg->outsize = EC_PROTO2_MAX_PARAM_SIZE;
38 	msg->data[0] = 0xde;
39 	msg->data[1] = 0xad;
40 	msg->data[2] = 0xbe;
41 	msg->data[3] = 0xef;
42 
43 	ret = cros_ec_prepare_tx(ec_dev, msg);
44 
45 	KUNIT_EXPECT_EQ(test, ret, EC_MSG_TX_PROTO_BYTES + EC_PROTO2_MAX_PARAM_SIZE);
46 	KUNIT_EXPECT_EQ(test, ec_dev->dout[0], EC_CMD_VERSION0);
47 	KUNIT_EXPECT_EQ(test, ec_dev->dout[1], EC_CMD_HELLO);
48 	KUNIT_EXPECT_EQ(test, ec_dev->dout[2], EC_PROTO2_MAX_PARAM_SIZE);
49 	KUNIT_EXPECT_EQ(test, EC_MSG_TX_HEADER_BYTES, 3);
50 	KUNIT_EXPECT_EQ(test, ec_dev->dout[EC_MSG_TX_HEADER_BYTES + 0], 0xde);
51 	KUNIT_EXPECT_EQ(test, ec_dev->dout[EC_MSG_TX_HEADER_BYTES + 1], 0xad);
52 	KUNIT_EXPECT_EQ(test, ec_dev->dout[EC_MSG_TX_HEADER_BYTES + 2], 0xbe);
53 	KUNIT_EXPECT_EQ(test, ec_dev->dout[EC_MSG_TX_HEADER_BYTES + 3], 0xef);
54 	for (i = 4; i < EC_PROTO2_MAX_PARAM_SIZE; ++i)
55 		KUNIT_EXPECT_EQ(test, ec_dev->dout[EC_MSG_TX_HEADER_BYTES + i], 0);
56 
57 	csum = EC_CMD_VERSION0;
58 	csum += EC_CMD_HELLO;
59 	csum += EC_PROTO2_MAX_PARAM_SIZE;
60 	csum += 0xde;
61 	csum += 0xad;
62 	csum += 0xbe;
63 	csum += 0xef;
64 	KUNIT_EXPECT_EQ(test,
65 			ec_dev->dout[EC_MSG_TX_HEADER_BYTES + EC_PROTO2_MAX_PARAM_SIZE],
66 			csum);
67 }
68 
69 static void cros_ec_proto_test_prepare_tx_legacy_bad_msg_outsize(struct kunit *test)
70 {
71 	struct cros_ec_proto_test_priv *priv = test->priv;
72 	struct cros_ec_device *ec_dev = &priv->ec_dev;
73 	struct cros_ec_command *msg = priv->msg;
74 	int ret;
75 
76 	ec_dev->proto_version = 2;
77 
78 	msg->outsize = EC_PROTO2_MAX_PARAM_SIZE + 1;
79 
80 	ret = cros_ec_prepare_tx(ec_dev, msg);
81 	KUNIT_EXPECT_EQ(test, ret, -EINVAL);
82 }
83 
84 static void cros_ec_proto_test_prepare_tx_normal(struct kunit *test)
85 {
86 	struct cros_ec_proto_test_priv *priv = test->priv;
87 	struct cros_ec_device *ec_dev = &priv->ec_dev;
88 	struct cros_ec_command *msg = priv->msg;
89 	struct ec_host_request *request = (struct ec_host_request *)ec_dev->dout;
90 	int ret, i;
91 	u8 csum;
92 
93 	msg->command = EC_CMD_HELLO;
94 	msg->outsize = 0x88;
95 	msg->data[0] = 0xde;
96 	msg->data[1] = 0xad;
97 	msg->data[2] = 0xbe;
98 	msg->data[3] = 0xef;
99 
100 	ret = cros_ec_prepare_tx(ec_dev, msg);
101 
102 	KUNIT_EXPECT_EQ(test, ret, sizeof(*request) + 0x88);
103 
104 	KUNIT_EXPECT_EQ(test, request->struct_version, EC_HOST_REQUEST_VERSION);
105 	KUNIT_EXPECT_EQ(test, request->command, EC_CMD_HELLO);
106 	KUNIT_EXPECT_EQ(test, request->command_version, 0);
107 	KUNIT_EXPECT_EQ(test, request->data_len, 0x88);
108 	KUNIT_EXPECT_EQ(test, ec_dev->dout[sizeof(*request) + 0], 0xde);
109 	KUNIT_EXPECT_EQ(test, ec_dev->dout[sizeof(*request) + 1], 0xad);
110 	KUNIT_EXPECT_EQ(test, ec_dev->dout[sizeof(*request) + 2], 0xbe);
111 	KUNIT_EXPECT_EQ(test, ec_dev->dout[sizeof(*request) + 3], 0xef);
112 	for (i = 4; i < 0x88; ++i)
113 		KUNIT_EXPECT_EQ(test, ec_dev->dout[sizeof(*request) + i], 0);
114 
115 	csum = EC_HOST_REQUEST_VERSION;
116 	csum += EC_CMD_HELLO;
117 	csum += 0x88;
118 	csum += 0xde;
119 	csum += 0xad;
120 	csum += 0xbe;
121 	csum += 0xef;
122 	KUNIT_EXPECT_EQ(test, request->checksum, (u8)-csum);
123 }
124 
125 static void cros_ec_proto_test_prepare_tx_bad_msg_outsize(struct kunit *test)
126 {
127 	struct cros_ec_proto_test_priv *priv = test->priv;
128 	struct cros_ec_device *ec_dev = &priv->ec_dev;
129 	struct cros_ec_command *msg = priv->msg;
130 	int ret;
131 
132 	msg->outsize = ec_dev->dout_size - sizeof(struct ec_host_request) + 1;
133 
134 	ret = cros_ec_prepare_tx(ec_dev, msg);
135 	KUNIT_EXPECT_EQ(test, ret, -EINVAL);
136 }
137 
138 static void cros_ec_proto_test_check_result(struct kunit *test)
139 {
140 	struct cros_ec_proto_test_priv *priv = test->priv;
141 	struct cros_ec_device *ec_dev = &priv->ec_dev;
142 	struct cros_ec_command *msg = priv->msg;
143 	int ret, i;
144 	static enum ec_status status[] = {
145 		EC_RES_SUCCESS,
146 		EC_RES_INVALID_COMMAND,
147 		EC_RES_ERROR,
148 		EC_RES_INVALID_PARAM,
149 		EC_RES_ACCESS_DENIED,
150 		EC_RES_INVALID_RESPONSE,
151 		EC_RES_INVALID_VERSION,
152 		EC_RES_INVALID_CHECKSUM,
153 		EC_RES_UNAVAILABLE,
154 		EC_RES_TIMEOUT,
155 		EC_RES_OVERFLOW,
156 		EC_RES_INVALID_HEADER,
157 		EC_RES_REQUEST_TRUNCATED,
158 		EC_RES_RESPONSE_TOO_BIG,
159 		EC_RES_BUS_ERROR,
160 		EC_RES_BUSY,
161 		EC_RES_INVALID_HEADER_VERSION,
162 		EC_RES_INVALID_HEADER_CRC,
163 		EC_RES_INVALID_DATA_CRC,
164 		EC_RES_DUP_UNAVAILABLE,
165 	};
166 
167 	for (i = 0; i < ARRAY_SIZE(status); ++i) {
168 		msg->result = status[i];
169 		ret = cros_ec_check_result(ec_dev, msg);
170 		KUNIT_EXPECT_EQ(test, ret, 0);
171 	}
172 
173 	msg->result = EC_RES_IN_PROGRESS;
174 	ret = cros_ec_check_result(ec_dev, msg);
175 	KUNIT_EXPECT_EQ(test, ret, -EAGAIN);
176 }
177 
178 static void cros_ec_proto_test_query_all_pretest(struct kunit *test)
179 {
180 	struct cros_ec_proto_test_priv *priv = test->priv;
181 	struct cros_ec_device *ec_dev = &priv->ec_dev;
182 
183 	/*
184 	 * cros_ec_query_all() will free din and dout and allocate them again to fit the usage by
185 	 * calling devm_kfree() and devm_kzalloc().  Set them to NULL as they aren't managed by
186 	 * ec_dev->dev but allocated statically in struct cros_ec_proto_test_priv
187 	 * (see cros_ec_proto_test_init()).
188 	 */
189 	ec_dev->din = NULL;
190 	ec_dev->dout = NULL;
191 }
192 
193 static void cros_ec_proto_test_query_all_normal(struct kunit *test)
194 {
195 	struct cros_ec_proto_test_priv *priv = test->priv;
196 	struct cros_ec_device *ec_dev = &priv->ec_dev;
197 	struct ec_xfer_mock *mock;
198 	int ret;
199 
200 	/* For cros_ec_get_proto_info() without passthru. */
201 	{
202 		struct ec_response_get_protocol_info *data;
203 
204 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
205 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
206 
207 		data = (struct ec_response_get_protocol_info *)mock->o_data;
208 		data->protocol_versions = BIT(3) | BIT(2);
209 		data->max_request_packet_size = 0xbe;
210 		data->max_response_packet_size = 0xef;
211 	}
212 
213 	/* For cros_ec_get_proto_info() with passthru. */
214 	{
215 		struct ec_response_get_protocol_info *data;
216 
217 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
218 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
219 
220 		data = (struct ec_response_get_protocol_info *)mock->o_data;
221 		data->max_request_packet_size = 0xbf;
222 	}
223 
224 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
225 	{
226 		struct ec_response_get_cmd_versions *data;
227 
228 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
229 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
230 
231 		data = (struct ec_response_get_cmd_versions *)mock->o_data;
232 		data->version_mask = BIT(6) | BIT(5);
233 	}
234 
235 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
236 	{
237 		struct ec_response_get_cmd_versions *data;
238 
239 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
240 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
241 
242 		data = (struct ec_response_get_cmd_versions *)mock->o_data;
243 		data->version_mask = BIT(1);
244 	}
245 
246 	/* For cros_ec_get_host_event_wake_mask(). */
247 	{
248 		struct ec_response_host_event_mask *data;
249 
250 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
251 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
252 
253 		data = (struct ec_response_host_event_mask *)mock->o_data;
254 		data->mask = 0xbeef;
255 	}
256 
257 	cros_ec_proto_test_query_all_pretest(test);
258 	ret = cros_ec_query_all(ec_dev);
259 	KUNIT_EXPECT_EQ(test, ret, 0);
260 
261 	/* For cros_ec_get_proto_info() without passthru. */
262 	{
263 		mock = cros_kunit_ec_xfer_mock_next();
264 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
265 
266 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
267 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
268 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
269 				sizeof(struct ec_response_get_protocol_info));
270 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
271 
272 		KUNIT_EXPECT_EQ(test, ec_dev->max_request, 0xbe - sizeof(struct ec_host_request));
273 		KUNIT_EXPECT_EQ(test, ec_dev->max_response, 0xef - sizeof(struct ec_host_response));
274 		KUNIT_EXPECT_EQ(test, ec_dev->proto_version, 3);
275 		KUNIT_EXPECT_EQ(test, ec_dev->din_size, 0xef + EC_MAX_RESPONSE_OVERHEAD);
276 		KUNIT_EXPECT_EQ(test, ec_dev->dout_size, 0xbe + EC_MAX_REQUEST_OVERHEAD);
277 	}
278 
279 	/* For cros_ec_get_proto_info() with passthru. */
280 	{
281 		mock = cros_kunit_ec_xfer_mock_next();
282 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
283 
284 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
285 		KUNIT_EXPECT_EQ(test, mock->msg.command,
286 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
287 				EC_CMD_GET_PROTOCOL_INFO);
288 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
289 				sizeof(struct ec_response_get_protocol_info));
290 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
291 
292 		KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0xbf - sizeof(struct ec_host_request));
293 	}
294 
295 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
296 	{
297 		struct ec_params_get_cmd_versions *data;
298 
299 		mock = cros_kunit_ec_xfer_mock_next();
300 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
301 
302 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
303 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
304 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
305 				sizeof(struct ec_response_get_cmd_versions));
306 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
307 
308 		data = (struct ec_params_get_cmd_versions *)mock->i_data;
309 		KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_GET_NEXT_EVENT);
310 
311 		KUNIT_EXPECT_EQ(test, ec_dev->mkbp_event_supported, 7);
312 	}
313 
314 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
315 	{
316 		struct ec_params_get_cmd_versions *data;
317 
318 		mock = cros_kunit_ec_xfer_mock_next();
319 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
320 
321 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
322 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
323 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
324 				sizeof(struct ec_response_get_cmd_versions));
325 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
326 
327 		data = (struct ec_params_get_cmd_versions *)mock->i_data;
328 		KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_HOST_SLEEP_EVENT);
329 
330 		KUNIT_EXPECT_TRUE(test, ec_dev->host_sleep_v1);
331 	}
332 
333 	/* For cros_ec_get_host_event_wake_mask(). */
334 	{
335 		mock = cros_kunit_ec_xfer_mock_next();
336 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
337 
338 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
339 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HOST_EVENT_GET_WAKE_MASK);
340 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_host_event_mask));
341 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
342 
343 		KUNIT_EXPECT_EQ(test, ec_dev->host_event_wake_mask, 0xbeef);
344 	}
345 }
346 
347 static void cros_ec_proto_test_query_all_no_pd_return_error(struct kunit *test)
348 {
349 	struct cros_ec_proto_test_priv *priv = test->priv;
350 	struct cros_ec_device *ec_dev = &priv->ec_dev;
351 	struct ec_xfer_mock *mock;
352 	int ret;
353 
354 	/* Set some garbage bytes. */
355 	ec_dev->max_passthru = 0xbf;
356 
357 	/* For cros_ec_get_proto_info() without passthru. */
358 	{
359 		struct ec_response_get_protocol_info *data;
360 
361 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
362 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
363 
364 		/*
365 		 * Although it doesn't check the value, provides valid sizes so that
366 		 * cros_ec_query_all() allocates din and dout correctly.
367 		 */
368 		data = (struct ec_response_get_protocol_info *)mock->o_data;
369 		data->max_request_packet_size = 0xbe;
370 		data->max_response_packet_size = 0xef;
371 	}
372 
373 	/* For cros_ec_get_proto_info() with passthru. */
374 	{
375 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
376 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
377 	}
378 
379 	cros_ec_proto_test_query_all_pretest(test);
380 	ret = cros_ec_query_all(ec_dev);
381 	KUNIT_EXPECT_EQ(test, ret, 0);
382 
383 	/* For cros_ec_get_proto_info() without passthru. */
384 	{
385 		mock = cros_kunit_ec_xfer_mock_next();
386 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
387 
388 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
389 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
390 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
391 				sizeof(struct ec_response_get_protocol_info));
392 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
393 	}
394 
395 	/* For cros_ec_get_proto_info() with passthru. */
396 	{
397 		mock = cros_kunit_ec_xfer_mock_next();
398 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
399 
400 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
401 		KUNIT_EXPECT_EQ(test, mock->msg.command,
402 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
403 				EC_CMD_GET_PROTOCOL_INFO);
404 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
405 				sizeof(struct ec_response_get_protocol_info));
406 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
407 
408 		KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
409 	}
410 }
411 
412 static void cros_ec_proto_test_query_all_no_pd_return0(struct kunit *test)
413 {
414 	struct cros_ec_proto_test_priv *priv = test->priv;
415 	struct cros_ec_device *ec_dev = &priv->ec_dev;
416 	struct ec_xfer_mock *mock;
417 	int ret;
418 
419 	/* Set some garbage bytes. */
420 	ec_dev->max_passthru = 0xbf;
421 
422 	/* For cros_ec_get_proto_info() without passthru. */
423 	{
424 		struct ec_response_get_protocol_info *data;
425 
426 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
427 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
428 
429 		/*
430 		 * Although it doesn't check the value, provides valid sizes so that
431 		 * cros_ec_query_all() allocates din and dout correctly.
432 		 */
433 		data = (struct ec_response_get_protocol_info *)mock->o_data;
434 		data->max_request_packet_size = 0xbe;
435 		data->max_response_packet_size = 0xef;
436 	}
437 
438 	/* For cros_ec_get_proto_info() with passthru. */
439 	{
440 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
441 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
442 	}
443 
444 	cros_ec_proto_test_query_all_pretest(test);
445 	ret = cros_ec_query_all(ec_dev);
446 	KUNIT_EXPECT_EQ(test, ret, 0);
447 
448 	/* For cros_ec_get_proto_info() without passthru. */
449 	{
450 		mock = cros_kunit_ec_xfer_mock_next();
451 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
452 
453 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
454 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
455 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
456 				sizeof(struct ec_response_get_protocol_info));
457 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
458 	}
459 
460 	/* For cros_ec_get_proto_info() with passthru. */
461 	{
462 		mock = cros_kunit_ec_xfer_mock_next();
463 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
464 
465 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
466 		KUNIT_EXPECT_EQ(test, mock->msg.command,
467 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
468 				EC_CMD_GET_PROTOCOL_INFO);
469 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
470 				sizeof(struct ec_response_get_protocol_info));
471 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
472 
473 		KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
474 	}
475 }
476 
477 static void cros_ec_proto_test_query_all_legacy_normal_v3_return_error(struct kunit *test)
478 {
479 	struct cros_ec_proto_test_priv *priv = test->priv;
480 	struct cros_ec_device *ec_dev = &priv->ec_dev;
481 	struct ec_xfer_mock *mock;
482 	int ret;
483 
484 	/* For cros_ec_get_proto_info() without passthru. */
485 	{
486 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
487 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
488 	}
489 
490 	/* For cros_ec_get_proto_info_legacy(). */
491 	{
492 		struct ec_response_hello *data;
493 
494 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
495 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
496 
497 		data = (struct ec_response_hello *)mock->o_data;
498 		data->out_data = 0xa1b2c3d4;
499 	}
500 
501 	cros_ec_proto_test_query_all_pretest(test);
502 	ret = cros_ec_query_all(ec_dev);
503 	KUNIT_EXPECT_EQ(test, ret, 0);
504 
505 	/* For cros_ec_get_proto_info() without passthru. */
506 	{
507 		mock = cros_kunit_ec_xfer_mock_next();
508 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
509 
510 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
511 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
512 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
513 				sizeof(struct ec_response_get_protocol_info));
514 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
515 	}
516 
517 	/* For cros_ec_get_proto_info_legacy(). */
518 	{
519 		struct ec_params_hello *data;
520 
521 		mock = cros_kunit_ec_xfer_mock_next();
522 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
523 
524 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
525 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
526 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
527 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
528 
529 		data = (struct ec_params_hello *)mock->i_data;
530 		KUNIT_EXPECT_EQ(test, data->in_data, 0xa0b0c0d0);
531 
532 		KUNIT_EXPECT_EQ(test, ec_dev->proto_version, 2);
533 		KUNIT_EXPECT_EQ(test, ec_dev->max_request, EC_PROTO2_MAX_PARAM_SIZE);
534 		KUNIT_EXPECT_EQ(test, ec_dev->max_response, EC_PROTO2_MAX_PARAM_SIZE);
535 		KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
536 		KUNIT_EXPECT_PTR_EQ(test, ec_dev->pkt_xfer, NULL);
537 		KUNIT_EXPECT_EQ(test, ec_dev->din_size, EC_PROTO2_MSG_BYTES);
538 		KUNIT_EXPECT_EQ(test, ec_dev->dout_size, EC_PROTO2_MSG_BYTES);
539 	}
540 }
541 
542 static void cros_ec_proto_test_query_all_legacy_normal_v3_return0(struct kunit *test)
543 {
544 	struct cros_ec_proto_test_priv *priv = test->priv;
545 	struct cros_ec_device *ec_dev = &priv->ec_dev;
546 	struct ec_xfer_mock *mock;
547 	int ret;
548 
549 	/* For cros_ec_get_proto_info() without passthru. */
550 	{
551 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
552 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
553 	}
554 
555 	/* For cros_ec_get_proto_info_legacy(). */
556 	{
557 		struct ec_response_hello *data;
558 
559 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
560 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
561 
562 		data = (struct ec_response_hello *)mock->o_data;
563 		data->out_data = 0xa1b2c3d4;
564 	}
565 
566 	cros_ec_proto_test_query_all_pretest(test);
567 	ret = cros_ec_query_all(ec_dev);
568 	KUNIT_EXPECT_EQ(test, ret, 0);
569 
570 	/* For cros_ec_get_proto_info() without passthru. */
571 	{
572 		mock = cros_kunit_ec_xfer_mock_next();
573 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
574 
575 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
576 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
577 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
578 				sizeof(struct ec_response_get_protocol_info));
579 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
580 	}
581 
582 	/* For cros_ec_get_proto_info_legacy(). */
583 	{
584 		struct ec_params_hello *data;
585 
586 		mock = cros_kunit_ec_xfer_mock_next();
587 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
588 
589 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
590 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
591 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
592 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
593 
594 		data = (struct ec_params_hello *)mock->i_data;
595 		KUNIT_EXPECT_EQ(test, data->in_data, 0xa0b0c0d0);
596 
597 		KUNIT_EXPECT_EQ(test, ec_dev->proto_version, 2);
598 		KUNIT_EXPECT_EQ(test, ec_dev->max_request, EC_PROTO2_MAX_PARAM_SIZE);
599 		KUNIT_EXPECT_EQ(test, ec_dev->max_response, EC_PROTO2_MAX_PARAM_SIZE);
600 		KUNIT_EXPECT_EQ(test, ec_dev->max_passthru, 0);
601 		KUNIT_EXPECT_PTR_EQ(test, ec_dev->pkt_xfer, NULL);
602 		KUNIT_EXPECT_EQ(test, ec_dev->din_size, EC_PROTO2_MSG_BYTES);
603 		KUNIT_EXPECT_EQ(test, ec_dev->dout_size, EC_PROTO2_MSG_BYTES);
604 	}
605 }
606 
607 static void cros_ec_proto_test_query_all_legacy_xfer_error(struct kunit *test)
608 {
609 	struct cros_ec_proto_test_priv *priv = test->priv;
610 	struct cros_ec_device *ec_dev = &priv->ec_dev;
611 	struct ec_xfer_mock *mock;
612 	int ret;
613 
614 	/* For cros_ec_get_proto_info() without passthru. */
615 	{
616 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
617 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
618 	}
619 
620 	/* For cros_ec_get_proto_info_legacy(). */
621 	{
622 		mock = cros_kunit_ec_xfer_mock_addx(test, -EIO, EC_RES_SUCCESS, 0);
623 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
624 	}
625 
626 	cros_ec_proto_test_query_all_pretest(test);
627 	ret = cros_ec_query_all(ec_dev);
628 	KUNIT_EXPECT_EQ(test, ret, -EIO);
629 	KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
630 
631 	/* For cros_ec_get_proto_info() without passthru. */
632 	{
633 		mock = cros_kunit_ec_xfer_mock_next();
634 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
635 
636 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
637 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
638 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
639 				sizeof(struct ec_response_get_protocol_info));
640 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
641 	}
642 
643 	/* For cros_ec_get_proto_info_legacy(). */
644 	{
645 		mock = cros_kunit_ec_xfer_mock_next();
646 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
647 
648 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
649 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
650 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
651 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
652 	}
653 }
654 
655 static void cros_ec_proto_test_query_all_legacy_return_error(struct kunit *test)
656 {
657 	struct cros_ec_proto_test_priv *priv = test->priv;
658 	struct cros_ec_device *ec_dev = &priv->ec_dev;
659 	struct ec_xfer_mock *mock;
660 	int ret;
661 
662 	/* For cros_ec_get_proto_info() without passthru. */
663 	{
664 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
665 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
666 	}
667 
668 	/* For cros_ec_get_proto_info_legacy(). */
669 	{
670 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
671 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
672 	}
673 
674 	cros_ec_proto_test_query_all_pretest(test);
675 	ret = cros_ec_query_all(ec_dev);
676 	KUNIT_EXPECT_EQ(test, ret, -EOPNOTSUPP);
677 	KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
678 
679 	/* For cros_ec_get_proto_info() without passthru. */
680 	{
681 		mock = cros_kunit_ec_xfer_mock_next();
682 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
683 
684 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
685 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
686 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
687 				sizeof(struct ec_response_get_protocol_info));
688 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
689 	}
690 
691 	/* For cros_ec_get_proto_info_legacy(). */
692 	{
693 		mock = cros_kunit_ec_xfer_mock_next();
694 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
695 
696 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
697 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
698 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
699 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
700 	}
701 }
702 
703 static void cros_ec_proto_test_query_all_legacy_data_error(struct kunit *test)
704 {
705 	struct cros_ec_proto_test_priv *priv = test->priv;
706 	struct cros_ec_device *ec_dev = &priv->ec_dev;
707 	struct ec_xfer_mock *mock;
708 	int ret;
709 
710 	/* For cros_ec_get_proto_info() without passthru. */
711 	{
712 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
713 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
714 	}
715 
716 	/* For cros_ec_get_proto_info_legacy(). */
717 	{
718 		struct ec_response_hello *data;
719 
720 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
721 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
722 
723 		data = (struct ec_response_hello *)mock->o_data;
724 		data->out_data = 0xbeefbfbf;
725 	}
726 
727 	cros_ec_proto_test_query_all_pretest(test);
728 	ret = cros_ec_query_all(ec_dev);
729 	KUNIT_EXPECT_EQ(test, ret, -EBADMSG);
730 	KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
731 
732 	/* For cros_ec_get_proto_info() without passthru. */
733 	{
734 		mock = cros_kunit_ec_xfer_mock_next();
735 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
736 
737 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
738 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
739 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
740 				sizeof(struct ec_response_get_protocol_info));
741 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
742 	}
743 
744 	/* For cros_ec_get_proto_info_legacy(). */
745 	{
746 		mock = cros_kunit_ec_xfer_mock_next();
747 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
748 
749 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
750 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
751 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
752 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
753 	}
754 }
755 
756 static void cros_ec_proto_test_query_all_legacy_return0(struct kunit *test)
757 {
758 	struct cros_ec_proto_test_priv *priv = test->priv;
759 	struct cros_ec_device *ec_dev = &priv->ec_dev;
760 	struct ec_xfer_mock *mock;
761 	int ret;
762 
763 	/* For cros_ec_get_proto_info() without passthru. */
764 	{
765 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
766 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
767 	}
768 
769 	/* For cros_ec_get_proto_info_legacy(). */
770 	{
771 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
772 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
773 	}
774 
775 	cros_ec_proto_test_query_all_pretest(test);
776 	ret = cros_ec_query_all(ec_dev);
777 	KUNIT_EXPECT_EQ(test, ret, -EPROTO);
778 	KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN);
779 
780 	/* For cros_ec_get_proto_info() without passthru. */
781 	{
782 		mock = cros_kunit_ec_xfer_mock_next();
783 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
784 
785 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
786 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
787 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
788 				sizeof(struct ec_response_get_protocol_info));
789 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
790 	}
791 
792 	/* For cros_ec_get_proto_info_legacy(). */
793 	{
794 		mock = cros_kunit_ec_xfer_mock_next();
795 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
796 
797 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
798 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
799 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_hello));
800 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_hello));
801 	}
802 }
803 
804 static void cros_ec_proto_test_query_all_no_mkbp(struct kunit *test)
805 {
806 	struct cros_ec_proto_test_priv *priv = test->priv;
807 	struct cros_ec_device *ec_dev = &priv->ec_dev;
808 	struct ec_xfer_mock *mock;
809 	int ret;
810 
811 	/* Set some garbage bytes. */
812 	ec_dev->mkbp_event_supported = 0xbf;
813 
814 	/* For cros_ec_get_proto_info() without passthru. */
815 	{
816 		struct ec_response_get_protocol_info *data;
817 
818 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
819 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
820 
821 		/*
822 		 * Although it doesn't check the value, provides valid sizes so that
823 		 * cros_ec_query_all() allocates din and dout correctly.
824 		 */
825 		data = (struct ec_response_get_protocol_info *)mock->o_data;
826 		data->max_request_packet_size = 0xbe;
827 		data->max_response_packet_size = 0xef;
828 	}
829 
830 	/* For cros_ec_get_proto_info() with passthru. */
831 	{
832 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
833 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
834 	}
835 
836 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
837 	{
838 		struct ec_response_get_cmd_versions *data;
839 
840 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
841 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
842 
843 		data = (struct ec_response_get_cmd_versions *)mock->o_data;
844 		data->version_mask = 0;
845 	}
846 
847 	cros_ec_proto_test_query_all_pretest(test);
848 	ret = cros_ec_query_all(ec_dev);
849 	KUNIT_EXPECT_EQ(test, ret, 0);
850 
851 	/* For cros_ec_get_proto_info() without passthru. */
852 	{
853 		mock = cros_kunit_ec_xfer_mock_next();
854 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
855 
856 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
857 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
858 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
859 				sizeof(struct ec_response_get_protocol_info));
860 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
861 	}
862 
863 	/* For cros_ec_get_proto_info() with passthru. */
864 	{
865 		mock = cros_kunit_ec_xfer_mock_next();
866 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
867 
868 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
869 		KUNIT_EXPECT_EQ(test, mock->msg.command,
870 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
871 				EC_CMD_GET_PROTOCOL_INFO);
872 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
873 				sizeof(struct ec_response_get_protocol_info));
874 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
875 	}
876 
877 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
878 	{
879 		struct ec_params_get_cmd_versions *data;
880 
881 		mock = cros_kunit_ec_xfer_mock_next();
882 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
883 
884 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
885 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
886 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
887 				sizeof(struct ec_response_get_cmd_versions));
888 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
889 
890 		data = (struct ec_params_get_cmd_versions *)mock->i_data;
891 		KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_GET_NEXT_EVENT);
892 
893 		KUNIT_EXPECT_EQ(test, ec_dev->mkbp_event_supported, 0);
894 	}
895 }
896 
897 static void cros_ec_proto_test_query_all_no_mkbp_return_error(struct kunit *test)
898 {
899 	struct cros_ec_proto_test_priv *priv = test->priv;
900 	struct cros_ec_device *ec_dev = &priv->ec_dev;
901 	struct ec_xfer_mock *mock;
902 	int ret;
903 
904 	/* Set some garbage bytes. */
905 	ec_dev->mkbp_event_supported = 0xbf;
906 
907 	/* For cros_ec_get_proto_info() without passthru. */
908 	{
909 		struct ec_response_get_protocol_info *data;
910 
911 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
912 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
913 
914 		/*
915 		 * Although it doesn't check the value, provides valid sizes so that
916 		 * cros_ec_query_all() allocates din and dout correctly.
917 		 */
918 		data = (struct ec_response_get_protocol_info *)mock->o_data;
919 		data->max_request_packet_size = 0xbe;
920 		data->max_response_packet_size = 0xef;
921 	}
922 
923 	/* For cros_ec_get_proto_info() with passthru. */
924 	{
925 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
926 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
927 	}
928 
929 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
930 	{
931 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
932 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
933 	}
934 
935 	cros_ec_proto_test_query_all_pretest(test);
936 	ret = cros_ec_query_all(ec_dev);
937 	KUNIT_EXPECT_EQ(test, ret, 0);
938 
939 	/* For cros_ec_get_proto_info() without passthru. */
940 	{
941 		mock = cros_kunit_ec_xfer_mock_next();
942 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
943 
944 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
945 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
946 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
947 				sizeof(struct ec_response_get_protocol_info));
948 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
949 	}
950 
951 	/* For cros_ec_get_proto_info() with passthru. */
952 	{
953 		mock = cros_kunit_ec_xfer_mock_next();
954 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
955 
956 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
957 		KUNIT_EXPECT_EQ(test, mock->msg.command,
958 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
959 				EC_CMD_GET_PROTOCOL_INFO);
960 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
961 				sizeof(struct ec_response_get_protocol_info));
962 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
963 	}
964 
965 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
966 	{
967 		struct ec_params_get_cmd_versions *data;
968 
969 		mock = cros_kunit_ec_xfer_mock_next();
970 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
971 
972 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
973 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
974 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
975 				sizeof(struct ec_response_get_cmd_versions));
976 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
977 
978 		data = (struct ec_params_get_cmd_versions *)mock->i_data;
979 		KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_GET_NEXT_EVENT);
980 
981 		KUNIT_EXPECT_EQ(test, ec_dev->mkbp_event_supported, 0);
982 	}
983 }
984 
985 static void cros_ec_proto_test_query_all_no_mkbp_return0(struct kunit *test)
986 {
987 	struct cros_ec_proto_test_priv *priv = test->priv;
988 	struct cros_ec_device *ec_dev = &priv->ec_dev;
989 	struct ec_xfer_mock *mock;
990 	int ret;
991 
992 	/* Set some garbage bytes. */
993 	ec_dev->mkbp_event_supported = 0xbf;
994 
995 	/* For cros_ec_get_proto_info() without passthru. */
996 	{
997 		struct ec_response_get_protocol_info *data;
998 
999 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1000 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1001 
1002 		/*
1003 		 * Although it doesn't check the value, provides valid sizes so that
1004 		 * cros_ec_query_all() allocates din and dout correctly.
1005 		 */
1006 		data = (struct ec_response_get_protocol_info *)mock->o_data;
1007 		data->max_request_packet_size = 0xbe;
1008 		data->max_response_packet_size = 0xef;
1009 	}
1010 
1011 	/* For cros_ec_get_proto_info() with passthru. */
1012 	{
1013 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1014 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1015 	}
1016 
1017 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1018 	{
1019 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1020 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1021 	}
1022 
1023 	cros_ec_proto_test_query_all_pretest(test);
1024 	ret = cros_ec_query_all(ec_dev);
1025 	KUNIT_EXPECT_EQ(test, ret, 0);
1026 
1027 	/* For cros_ec_get_proto_info() without passthru. */
1028 	{
1029 		mock = cros_kunit_ec_xfer_mock_next();
1030 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1031 
1032 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1033 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
1034 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1035 				sizeof(struct ec_response_get_protocol_info));
1036 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1037 	}
1038 
1039 	/* For cros_ec_get_proto_info() with passthru. */
1040 	{
1041 		mock = cros_kunit_ec_xfer_mock_next();
1042 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1043 
1044 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1045 		KUNIT_EXPECT_EQ(test, mock->msg.command,
1046 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
1047 				EC_CMD_GET_PROTOCOL_INFO);
1048 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1049 				sizeof(struct ec_response_get_protocol_info));
1050 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1051 	}
1052 
1053 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1054 	{
1055 		struct ec_params_get_cmd_versions *data;
1056 
1057 		mock = cros_kunit_ec_xfer_mock_next();
1058 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1059 
1060 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1061 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1062 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1063 				sizeof(struct ec_response_get_cmd_versions));
1064 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
1065 
1066 		data = (struct ec_params_get_cmd_versions *)mock->i_data;
1067 		KUNIT_EXPECT_EQ(test, data->cmd, EC_CMD_GET_NEXT_EVENT);
1068 
1069 		KUNIT_EXPECT_EQ(test, ec_dev->mkbp_event_supported, 0);
1070 	}
1071 }
1072 
1073 static void cros_ec_proto_test_query_all_no_host_sleep(struct kunit *test)
1074 {
1075 	struct cros_ec_proto_test_priv *priv = test->priv;
1076 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1077 	struct ec_xfer_mock *mock;
1078 	int ret;
1079 
1080 	/* Set some garbage bytes. */
1081 	ec_dev->host_sleep_v1 = true;
1082 
1083 	/* For cros_ec_get_proto_info() without passthru. */
1084 	{
1085 		struct ec_response_get_protocol_info *data;
1086 
1087 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1088 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1089 
1090 		/*
1091 		 * Although it doesn't check the value, provides valid sizes so that
1092 		 * cros_ec_query_all() allocates din and dout correctly.
1093 		 */
1094 		data = (struct ec_response_get_protocol_info *)mock->o_data;
1095 		data->max_request_packet_size = 0xbe;
1096 		data->max_response_packet_size = 0xef;
1097 	}
1098 
1099 	/* For cros_ec_get_proto_info() with passthru. */
1100 	{
1101 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1102 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1103 	}
1104 
1105 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1106 	{
1107 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1108 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1109 	}
1110 
1111 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1112 	{
1113 		struct ec_response_get_cmd_versions *data;
1114 
1115 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1116 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1117 
1118 		data = (struct ec_response_get_cmd_versions *)mock->o_data;
1119 		data->version_mask = 0;
1120 	}
1121 
1122 	cros_ec_proto_test_query_all_pretest(test);
1123 	ret = cros_ec_query_all(ec_dev);
1124 	KUNIT_EXPECT_EQ(test, ret, 0);
1125 
1126 	/* For cros_ec_get_proto_info() without passthru. */
1127 	{
1128 		mock = cros_kunit_ec_xfer_mock_next();
1129 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1130 
1131 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1132 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
1133 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1134 				sizeof(struct ec_response_get_protocol_info));
1135 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1136 	}
1137 
1138 	/* For cros_ec_get_proto_info() with passthru. */
1139 	{
1140 		mock = cros_kunit_ec_xfer_mock_next();
1141 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1142 
1143 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1144 		KUNIT_EXPECT_EQ(test, mock->msg.command,
1145 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
1146 				EC_CMD_GET_PROTOCOL_INFO);
1147 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1148 				sizeof(struct ec_response_get_protocol_info));
1149 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1150 	}
1151 
1152 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1153 	{
1154 		mock = cros_kunit_ec_xfer_mock_next();
1155 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1156 
1157 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1158 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1159 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1160 				sizeof(struct ec_response_get_cmd_versions));
1161 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1162 	}
1163 
1164 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1165 	{
1166 		mock = cros_kunit_ec_xfer_mock_next();
1167 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1168 
1169 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1170 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1171 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1172 				sizeof(struct ec_response_get_cmd_versions));
1173 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1174 
1175 		KUNIT_EXPECT_FALSE(test, ec_dev->host_sleep_v1);
1176 	}
1177 }
1178 
1179 static void cros_ec_proto_test_query_all_no_host_sleep_return0(struct kunit *test)
1180 {
1181 	struct cros_ec_proto_test_priv *priv = test->priv;
1182 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1183 	struct ec_xfer_mock *mock;
1184 	int ret;
1185 
1186 	/* Set some garbage bytes. */
1187 	ec_dev->host_sleep_v1 = true;
1188 
1189 	/* For cros_ec_get_proto_info() without passthru. */
1190 	{
1191 		struct ec_response_get_protocol_info *data;
1192 
1193 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1194 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1195 
1196 		/*
1197 		 * Although it doesn't check the value, provides valid sizes so that
1198 		 * cros_ec_query_all() allocates din and dout correctly.
1199 		 */
1200 		data = (struct ec_response_get_protocol_info *)mock->o_data;
1201 		data->max_request_packet_size = 0xbe;
1202 		data->max_response_packet_size = 0xef;
1203 	}
1204 
1205 	/* For cros_ec_get_proto_info() with passthru. */
1206 	{
1207 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1208 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1209 	}
1210 
1211 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1212 	{
1213 		struct ec_response_get_cmd_versions *data;
1214 
1215 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1216 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1217 
1218 		/* In order to pollute next cros_ec_get_host_command_version_mask(). */
1219 		data = (struct ec_response_get_cmd_versions *)mock->o_data;
1220 		data->version_mask = 0xbeef;
1221 	}
1222 
1223 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1224 	{
1225 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1226 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1227 	}
1228 
1229 	cros_ec_proto_test_query_all_pretest(test);
1230 	ret = cros_ec_query_all(ec_dev);
1231 	KUNIT_EXPECT_EQ(test, ret, 0);
1232 
1233 	/* For cros_ec_get_proto_info() without passthru. */
1234 	{
1235 		mock = cros_kunit_ec_xfer_mock_next();
1236 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1237 
1238 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1239 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
1240 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1241 				sizeof(struct ec_response_get_protocol_info));
1242 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1243 	}
1244 
1245 	/* For cros_ec_get_proto_info() with passthru. */
1246 	{
1247 		mock = cros_kunit_ec_xfer_mock_next();
1248 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1249 
1250 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1251 		KUNIT_EXPECT_EQ(test, mock->msg.command,
1252 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
1253 				EC_CMD_GET_PROTOCOL_INFO);
1254 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1255 				sizeof(struct ec_response_get_protocol_info));
1256 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1257 	}
1258 
1259 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1260 	{
1261 		mock = cros_kunit_ec_xfer_mock_next();
1262 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1263 
1264 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1265 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1266 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1267 				sizeof(struct ec_response_get_cmd_versions));
1268 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1269 	}
1270 
1271 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1272 	{
1273 		mock = cros_kunit_ec_xfer_mock_next();
1274 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1275 
1276 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1277 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1278 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1279 				sizeof(struct ec_response_get_cmd_versions));
1280 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1281 
1282 		KUNIT_EXPECT_FALSE(test, ec_dev->host_sleep_v1);
1283 	}
1284 }
1285 
1286 static void cros_ec_proto_test_query_all_default_wake_mask_return_error(struct kunit *test)
1287 {
1288 	struct cros_ec_proto_test_priv *priv = test->priv;
1289 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1290 	struct ec_xfer_mock *mock;
1291 	int ret;
1292 
1293 	/* Set some garbage bytes. */
1294 	ec_dev->host_event_wake_mask = U32_MAX;
1295 
1296 	/* For cros_ec_get_proto_info() without passthru. */
1297 	{
1298 		struct ec_response_get_protocol_info *data;
1299 
1300 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1301 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1302 
1303 		/*
1304 		 * Although it doesn't check the value, provides valid sizes so that
1305 		 * cros_ec_query_all() allocates din and dout correctly.
1306 		 */
1307 		data = (struct ec_response_get_protocol_info *)mock->o_data;
1308 		data->max_request_packet_size = 0xbe;
1309 		data->max_response_packet_size = 0xef;
1310 	}
1311 
1312 	/* For cros_ec_get_proto_info() with passthru. */
1313 	{
1314 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1315 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1316 	}
1317 
1318 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1319 	{
1320 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1321 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1322 	}
1323 
1324 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1325 	{
1326 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1327 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1328 	}
1329 
1330 	/* For cros_ec_get_host_event_wake_mask(). */
1331 	{
1332 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1333 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1334 	}
1335 
1336 	cros_ec_proto_test_query_all_pretest(test);
1337 	ret = cros_ec_query_all(ec_dev);
1338 	KUNIT_EXPECT_EQ(test, ret, 0);
1339 
1340 	/* For cros_ec_get_proto_info() without passthru. */
1341 	{
1342 		mock = cros_kunit_ec_xfer_mock_next();
1343 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1344 
1345 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1346 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
1347 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1348 				sizeof(struct ec_response_get_protocol_info));
1349 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1350 	}
1351 
1352 	/* For cros_ec_get_proto_info() with passthru. */
1353 	{
1354 		mock = cros_kunit_ec_xfer_mock_next();
1355 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1356 
1357 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1358 		KUNIT_EXPECT_EQ(test, mock->msg.command,
1359 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
1360 				EC_CMD_GET_PROTOCOL_INFO);
1361 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1362 				sizeof(struct ec_response_get_protocol_info));
1363 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1364 	}
1365 
1366 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1367 	{
1368 		mock = cros_kunit_ec_xfer_mock_next();
1369 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1370 
1371 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1372 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1373 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1374 				sizeof(struct ec_response_get_cmd_versions));
1375 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1376 	}
1377 
1378 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1379 	{
1380 		mock = cros_kunit_ec_xfer_mock_next();
1381 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1382 
1383 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1384 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1385 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1386 				sizeof(struct ec_response_get_cmd_versions));
1387 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1388 	}
1389 
1390 	/* For cros_ec_get_host_event_wake_mask(). */
1391 	{
1392 		u32 mask;
1393 
1394 		mock = cros_kunit_ec_xfer_mock_next();
1395 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1396 
1397 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1398 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HOST_EVENT_GET_WAKE_MASK);
1399 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_host_event_mask));
1400 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1401 
1402 		mask = ec_dev->host_event_wake_mask;
1403 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED), 0);
1404 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED), 0);
1405 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW), 0);
1406 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL), 0);
1407 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY), 0);
1408 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU), 0);
1409 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_STATUS), 0);
1410 	}
1411 }
1412 
1413 static void cros_ec_proto_test_query_all_default_wake_mask_return0(struct kunit *test)
1414 {
1415 	struct cros_ec_proto_test_priv *priv = test->priv;
1416 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1417 	struct ec_xfer_mock *mock;
1418 	int ret;
1419 
1420 	/* Set some garbage bytes. */
1421 	ec_dev->host_event_wake_mask = U32_MAX;
1422 
1423 	/* For cros_ec_get_proto_info() without passthru. */
1424 	{
1425 		struct ec_response_get_protocol_info *data;
1426 
1427 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1428 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1429 
1430 		/*
1431 		 * Although it doesn't check the value, provides valid sizes so that
1432 		 * cros_ec_query_all() allocates din and dout correctly.
1433 		 */
1434 		data = (struct ec_response_get_protocol_info *)mock->o_data;
1435 		data->max_request_packet_size = 0xbe;
1436 		data->max_response_packet_size = 0xef;
1437 	}
1438 
1439 	/* For cros_ec_get_proto_info() with passthru. */
1440 	{
1441 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1442 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1443 	}
1444 
1445 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1446 	{
1447 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1448 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1449 	}
1450 
1451 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1452 	{
1453 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1454 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1455 	}
1456 
1457 	/* For get_host_event_wake_mask(). */
1458 	{
1459 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1460 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1461 	}
1462 
1463 	cros_ec_proto_test_query_all_pretest(test);
1464 	ret = cros_ec_query_all(ec_dev);
1465 	KUNIT_EXPECT_EQ(test, ret, 0);
1466 
1467 	/* For cros_ec_get_proto_info() without passthru. */
1468 	{
1469 		mock = cros_kunit_ec_xfer_mock_next();
1470 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1471 
1472 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1473 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_PROTOCOL_INFO);
1474 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1475 				sizeof(struct ec_response_get_protocol_info));
1476 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1477 	}
1478 
1479 	/* For cros_ec_get_proto_info() with passthru. */
1480 	{
1481 		mock = cros_kunit_ec_xfer_mock_next();
1482 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1483 
1484 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1485 		KUNIT_EXPECT_EQ(test, mock->msg.command,
1486 				EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) |
1487 				EC_CMD_GET_PROTOCOL_INFO);
1488 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1489 				sizeof(struct ec_response_get_protocol_info));
1490 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1491 	}
1492 
1493 	/* For cros_ec_get_host_command_version_mask() for MKBP. */
1494 	{
1495 		mock = cros_kunit_ec_xfer_mock_next();
1496 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1497 
1498 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1499 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1500 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1501 				sizeof(struct ec_response_get_cmd_versions));
1502 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1503 	}
1504 
1505 	/* For cros_ec_get_host_command_version_mask() for host sleep v1. */
1506 	{
1507 		mock = cros_kunit_ec_xfer_mock_next();
1508 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1509 
1510 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1511 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_CMD_VERSIONS);
1512 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1513 				sizeof(struct ec_response_get_cmd_versions));
1514 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(struct ec_params_get_cmd_versions));
1515 	}
1516 
1517 	/* For get_host_event_wake_mask(). */
1518 	{
1519 		u32 mask;
1520 
1521 		mock = cros_kunit_ec_xfer_mock_next();
1522 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1523 
1524 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1525 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HOST_EVENT_GET_WAKE_MASK);
1526 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_host_event_mask));
1527 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1528 
1529 		mask = ec_dev->host_event_wake_mask;
1530 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_LID_CLOSED), 0);
1531 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED), 0);
1532 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_LOW), 0);
1533 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_CRITICAL), 0);
1534 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY), 0);
1535 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU), 0);
1536 		KUNIT_EXPECT_EQ(test, mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_BATTERY_STATUS), 0);
1537 	}
1538 }
1539 
1540 static void cros_ec_proto_test_cmd_xfer_normal(struct kunit *test)
1541 {
1542 	struct cros_ec_proto_test_priv *priv = test->priv;
1543 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1544 	struct ec_xfer_mock *mock;
1545 	int ret;
1546 	DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, 0x100);
1547 
1548 	ec_dev->max_request = 0xff;
1549 	ec_dev->max_response = 0xee;
1550 	ec_dev->max_passthru = 0xdd;
1551 
1552 	buf->version = 0;
1553 	buf->command = EC_CMD_HELLO;
1554 	buf->insize = 4;
1555 	buf->outsize = 2;
1556 	buf->data[0] = 0x55;
1557 	buf->data[1] = 0xaa;
1558 
1559 	{
1560 		u8 *data;
1561 
1562 		mock = cros_kunit_ec_xfer_mock_add(test, 4);
1563 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1564 
1565 		data = (u8 *)mock->o_data;
1566 		data[0] = 0xaa;
1567 		data[1] = 0x55;
1568 		data[2] = 0xcc;
1569 		data[3] = 0x33;
1570 	}
1571 
1572 	ret = cros_ec_cmd_xfer(ec_dev, buf);
1573 	KUNIT_EXPECT_EQ(test, ret, 4);
1574 
1575 	{
1576 		u8 *data;
1577 
1578 		mock = cros_kunit_ec_xfer_mock_next();
1579 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1580 
1581 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1582 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
1583 		KUNIT_EXPECT_EQ(test, mock->msg.insize, 4);
1584 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 2);
1585 
1586 		data = (u8 *)mock->i_data;
1587 		KUNIT_EXPECT_EQ(test, data[0], 0x55);
1588 		KUNIT_EXPECT_EQ(test, data[1], 0xaa);
1589 
1590 		KUNIT_EXPECT_EQ(test, buf->data[0], 0xaa);
1591 		KUNIT_EXPECT_EQ(test, buf->data[1], 0x55);
1592 		KUNIT_EXPECT_EQ(test, buf->data[2], 0xcc);
1593 		KUNIT_EXPECT_EQ(test, buf->data[3], 0x33);
1594 	}
1595 }
1596 
1597 static void cros_ec_proto_test_cmd_xfer_excess_msg_insize(struct kunit *test)
1598 {
1599 	struct cros_ec_proto_test_priv *priv = test->priv;
1600 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1601 	struct ec_xfer_mock *mock;
1602 	int ret;
1603 	DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, 0x100);
1604 
1605 	ec_dev->max_request = 0xff;
1606 	ec_dev->max_response = 0xee;
1607 	ec_dev->max_passthru = 0xdd;
1608 
1609 	buf->version = 0;
1610 	buf->command = EC_CMD_HELLO;
1611 	buf->insize = 0xee + 1;
1612 	buf->outsize = 2;
1613 
1614 	{
1615 		mock = cros_kunit_ec_xfer_mock_add(test, 0xcc);
1616 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1617 	}
1618 
1619 	ret = cros_ec_cmd_xfer(ec_dev, buf);
1620 	KUNIT_EXPECT_EQ(test, ret, 0xcc);
1621 
1622 	{
1623 		mock = cros_kunit_ec_xfer_mock_next();
1624 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1625 
1626 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1627 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_HELLO);
1628 		KUNIT_EXPECT_EQ(test, mock->msg.insize, 0xee);
1629 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 2);
1630 	}
1631 }
1632 
1633 static void cros_ec_proto_test_cmd_xfer_excess_msg_outsize_without_passthru(struct kunit *test)
1634 {
1635 	struct cros_ec_proto_test_priv *priv = test->priv;
1636 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1637 	int ret;
1638 	DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, 0x100);
1639 
1640 	ec_dev->max_request = 0xff;
1641 	ec_dev->max_response = 0xee;
1642 	ec_dev->max_passthru = 0xdd;
1643 
1644 	buf->version = 0;
1645 	buf->command = EC_CMD_HELLO;
1646 	buf->insize = 4;
1647 	buf->outsize = 0xff + 1;
1648 
1649 	ret = cros_ec_cmd_xfer(ec_dev, buf);
1650 	KUNIT_EXPECT_EQ(test, ret, -EMSGSIZE);
1651 }
1652 
1653 static void cros_ec_proto_test_cmd_xfer_excess_msg_outsize_with_passthru(struct kunit *test)
1654 {
1655 	struct cros_ec_proto_test_priv *priv = test->priv;
1656 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1657 	int ret;
1658 	DEFINE_RAW_FLEX(struct cros_ec_command, buf, data, 0x100);
1659 
1660 	ec_dev->max_request = 0xff;
1661 	ec_dev->max_response = 0xee;
1662 	ec_dev->max_passthru = 0xdd;
1663 
1664 	buf->version = 0;
1665 	buf->command = EC_CMD_PASSTHRU_OFFSET(CROS_EC_DEV_PD_INDEX) + EC_CMD_HELLO;
1666 	buf->insize = 4;
1667 	buf->outsize = 0xdd + 1;
1668 
1669 	ret = cros_ec_cmd_xfer(ec_dev, buf);
1670 	KUNIT_EXPECT_EQ(test, ret, -EMSGSIZE);
1671 }
1672 
1673 static void cros_ec_proto_test_cmd_xfer_protocol_v3_normal(struct kunit *test)
1674 {
1675 	struct cros_ec_proto_test_priv *priv = test->priv;
1676 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1677 	int ret;
1678 	struct cros_ec_command msg;
1679 
1680 	memset(&msg, 0, sizeof(msg));
1681 
1682 	ec_dev->proto_version = 3;
1683 	ec_dev->cmd_xfer = cros_kunit_ec_cmd_xfer_mock;
1684 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1685 
1686 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1687 	KUNIT_EXPECT_EQ(test, ret, 0);
1688 
1689 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_cmd_xfer_mock_called, 0);
1690 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 1);
1691 }
1692 
1693 static void cros_ec_proto_test_cmd_xfer_protocol_v3_no_op(struct kunit *test)
1694 {
1695 	struct cros_ec_proto_test_priv *priv = test->priv;
1696 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1697 	int ret;
1698 	struct cros_ec_command msg;
1699 
1700 	memset(&msg, 0, sizeof(msg));
1701 
1702 	ec_dev->proto_version = 3;
1703 	ec_dev->cmd_xfer = cros_kunit_ec_cmd_xfer_mock;
1704 	ec_dev->pkt_xfer = NULL;
1705 
1706 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1707 	KUNIT_EXPECT_EQ(test, ret, -EIO);
1708 }
1709 
1710 static void cros_ec_proto_test_cmd_xfer_protocol_v2_normal(struct kunit *test)
1711 {
1712 	struct cros_ec_proto_test_priv *priv = test->priv;
1713 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1714 	int ret;
1715 	struct cros_ec_command msg;
1716 
1717 	memset(&msg, 0, sizeof(msg));
1718 
1719 	ec_dev->proto_version = 2;
1720 	ec_dev->cmd_xfer = cros_kunit_ec_cmd_xfer_mock;
1721 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1722 
1723 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1724 	KUNIT_EXPECT_EQ(test, ret, 0);
1725 
1726 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_cmd_xfer_mock_called, 1);
1727 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 0);
1728 }
1729 
1730 static void cros_ec_proto_test_cmd_xfer_protocol_v2_no_op(struct kunit *test)
1731 {
1732 	struct cros_ec_proto_test_priv *priv = test->priv;
1733 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1734 	int ret;
1735 	struct cros_ec_command msg;
1736 
1737 	memset(&msg, 0, sizeof(msg));
1738 
1739 	ec_dev->proto_version = 2;
1740 	ec_dev->cmd_xfer = NULL;
1741 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1742 
1743 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1744 	KUNIT_EXPECT_EQ(test, ret, -EIO);
1745 }
1746 
1747 static void cros_ec_proto_test_cmd_xfer_in_progress_normal(struct kunit *test)
1748 {
1749 	struct cros_ec_proto_test_priv *priv = test->priv;
1750 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1751 	struct ec_xfer_mock *mock;
1752 	int ret;
1753 	struct cros_ec_command msg;
1754 
1755 	memset(&msg, 0, sizeof(msg));
1756 
1757 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1758 
1759 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1760 	{
1761 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1762 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1763 	}
1764 
1765 	/* For EC_CMD_GET_COMMS_STATUS. */
1766 	{
1767 		struct ec_response_get_comms_status *data;
1768 
1769 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1770 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1771 
1772 		data = (struct ec_response_get_comms_status *)mock->o_data;
1773 		data->flags = 0;
1774 	}
1775 
1776 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1777 	KUNIT_EXPECT_EQ(test, ret, sizeof(struct ec_response_get_comms_status));
1778 
1779 	KUNIT_EXPECT_EQ(test, msg.result, EC_RES_SUCCESS);
1780 
1781 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1782 	{
1783 		mock = cros_kunit_ec_xfer_mock_next();
1784 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1785 	}
1786 
1787 	/* For EC_CMD_GET_COMMS_STATUS. */
1788 	{
1789 		mock = cros_kunit_ec_xfer_mock_next();
1790 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
1791 
1792 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
1793 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_COMMS_STATUS);
1794 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
1795 				sizeof(struct ec_response_get_comms_status));
1796 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
1797 	}
1798 
1799 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 2);
1800 }
1801 
1802 static void cros_ec_proto_test_cmd_xfer_in_progress_retries_eagain(struct kunit *test)
1803 {
1804 	struct cros_ec_proto_test_priv *priv = test->priv;
1805 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1806 	struct ec_xfer_mock *mock;
1807 	int ret;
1808 	struct cros_ec_command msg;
1809 
1810 	memset(&msg, 0, sizeof(msg));
1811 
1812 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1813 
1814 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1815 	{
1816 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1817 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1818 	}
1819 
1820 	/* For EC_CMD_GET_COMMS_STATUS EC_COMMAND_RETRIES times. */
1821 	cros_kunit_ec_xfer_mock_default_ret = -EAGAIN;
1822 
1823 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1824 	KUNIT_EXPECT_EQ(test, ret, -EAGAIN);
1825 
1826 	/* For EC_CMD_GET_COMMS_STATUS EC_COMMAND_RETRIES times. */
1827 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 51);
1828 }
1829 
1830 static void cros_ec_proto_test_cmd_xfer_in_progress_retries_status_processing(struct kunit *test)
1831 {
1832 	struct cros_ec_proto_test_priv *priv = test->priv;
1833 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1834 	struct ec_xfer_mock *mock;
1835 	int ret;
1836 	struct cros_ec_command msg;
1837 
1838 	memset(&msg, 0, sizeof(msg));
1839 
1840 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1841 
1842 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1843 	{
1844 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1845 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1846 	}
1847 
1848 	/* For EC_CMD_GET_COMMS_STATUS EC_COMMAND_RETRIES times. */
1849 	{
1850 		struct ec_response_get_comms_status *data;
1851 		int i;
1852 
1853 		for (i = 0; i < 50; ++i) {
1854 			mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
1855 			KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1856 
1857 			data = (struct ec_response_get_comms_status *)mock->o_data;
1858 			data->flags |= EC_COMMS_STATUS_PROCESSING;
1859 		}
1860 	}
1861 
1862 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1863 	KUNIT_EXPECT_EQ(test, ret, -EAGAIN);
1864 
1865 	/* For EC_CMD_GET_COMMS_STATUS EC_COMMAND_RETRIES times. */
1866 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 51);
1867 }
1868 
1869 static void cros_ec_proto_test_cmd_xfer_in_progress_xfer_error(struct kunit *test)
1870 {
1871 	struct cros_ec_proto_test_priv *priv = test->priv;
1872 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1873 	struct ec_xfer_mock *mock;
1874 	int ret;
1875 	struct cros_ec_command msg;
1876 
1877 	memset(&msg, 0, sizeof(msg));
1878 
1879 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1880 	{
1881 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1882 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1883 	}
1884 
1885 	/* For EC_CMD_GET_COMMS_STATUS. */
1886 	{
1887 		mock = cros_kunit_ec_xfer_mock_addx(test, -EIO, EC_RES_SUCCESS, 0);
1888 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1889 	}
1890 
1891 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1892 	KUNIT_EXPECT_EQ(test, ret, -EIO);
1893 }
1894 
1895 static void cros_ec_proto_test_cmd_xfer_in_progress_return_error(struct kunit *test)
1896 {
1897 	struct cros_ec_proto_test_priv *priv = test->priv;
1898 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1899 	struct ec_xfer_mock *mock;
1900 	int ret;
1901 	struct cros_ec_command msg;
1902 
1903 	memset(&msg, 0, sizeof(msg));
1904 
1905 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1906 
1907 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1908 	{
1909 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1910 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1911 	}
1912 
1913 	/* For EC_CMD_GET_COMMS_STATUS. */
1914 	{
1915 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0);
1916 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1917 	}
1918 
1919 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1920 	KUNIT_EXPECT_EQ(test, ret, 0);
1921 
1922 	KUNIT_EXPECT_EQ(test, msg.result, EC_RES_INVALID_COMMAND);
1923 
1924 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 2);
1925 }
1926 
1927 static void cros_ec_proto_test_cmd_xfer_in_progress_return0(struct kunit *test)
1928 {
1929 	struct cros_ec_proto_test_priv *priv = test->priv;
1930 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1931 	struct ec_xfer_mock *mock;
1932 	int ret;
1933 	struct cros_ec_command msg;
1934 
1935 	memset(&msg, 0, sizeof(msg));
1936 
1937 	ec_dev->pkt_xfer = cros_kunit_ec_pkt_xfer_mock;
1938 
1939 	/* For the first host command to return EC_RES_IN_PROGRESS. */
1940 	{
1941 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_IN_PROGRESS, 0);
1942 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1943 	}
1944 
1945 	/* For EC_CMD_GET_COMMS_STATUS. */
1946 	{
1947 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1948 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1949 	}
1950 
1951 	ret = cros_ec_cmd_xfer(ec_dev, &msg);
1952 	KUNIT_EXPECT_EQ(test, ret, -EPROTO);
1953 
1954 	KUNIT_EXPECT_EQ(test, cros_kunit_ec_pkt_xfer_mock_called, 2);
1955 }
1956 
1957 static void cros_ec_proto_test_cmd_xfer_status_normal(struct kunit *test)
1958 {
1959 	struct cros_ec_proto_test_priv *priv = test->priv;
1960 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1961 	struct ec_xfer_mock *mock;
1962 	int ret;
1963 	struct cros_ec_command msg;
1964 
1965 	memset(&msg, 0, sizeof(msg));
1966 
1967 	/* For cros_ec_cmd_xfer(). */
1968 	{
1969 		mock = cros_kunit_ec_xfer_mock_add(test, 0);
1970 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1971 	}
1972 
1973 	ret = cros_ec_cmd_xfer_status(ec_dev, &msg);
1974 	KUNIT_EXPECT_EQ(test, ret, 0);
1975 }
1976 
1977 static void cros_ec_proto_test_cmd_xfer_status_xfer_error(struct kunit *test)
1978 {
1979 	struct cros_ec_proto_test_priv *priv = test->priv;
1980 	struct cros_ec_device *ec_dev = &priv->ec_dev;
1981 	struct ec_xfer_mock *mock;
1982 	int ret;
1983 	struct cros_ec_command msg;
1984 
1985 	memset(&msg, 0, sizeof(msg));
1986 
1987 	/* For cros_ec_cmd_xfer(). */
1988 	{
1989 		mock = cros_kunit_ec_xfer_mock_addx(test, -EPROTO, EC_RES_SUCCESS, 0);
1990 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
1991 	}
1992 
1993 	ret = cros_ec_cmd_xfer_status(ec_dev, &msg);
1994 	KUNIT_EXPECT_EQ(test, ret, -EPROTO);
1995 }
1996 
1997 static void cros_ec_proto_test_cmd_xfer_status_return_error(struct kunit *test)
1998 {
1999 	struct cros_ec_proto_test_priv *priv = test->priv;
2000 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2001 	struct ec_xfer_mock *mock;
2002 	int ret, i;
2003 	struct cros_ec_command msg;
2004 	static const int map[] = {
2005 		[EC_RES_SUCCESS] = 0,
2006 		[EC_RES_INVALID_COMMAND] = -EOPNOTSUPP,
2007 		[EC_RES_ERROR] = -EIO,
2008 		[EC_RES_INVALID_PARAM] = -EINVAL,
2009 		[EC_RES_ACCESS_DENIED] = -EACCES,
2010 		[EC_RES_INVALID_RESPONSE] = -EPROTO,
2011 		[EC_RES_INVALID_VERSION] = -ENOPROTOOPT,
2012 		[EC_RES_INVALID_CHECKSUM] = -EBADMSG,
2013 		/*
2014 		 * EC_RES_IN_PROGRESS is special because cros_ec_send_command() has extra logic to
2015 		 * handle it.  Note that default cros_kunit_ec_xfer_mock_default_ret == 0 thus
2016 		 * cros_ec_xfer_command() in cros_ec_wait_until_complete() returns 0.  As a result,
2017 		 * it returns -EPROTO without calling cros_ec_map_error().
2018 		 */
2019 		[EC_RES_IN_PROGRESS] = -EPROTO,
2020 		[EC_RES_UNAVAILABLE] = -ENODATA,
2021 		[EC_RES_TIMEOUT] = -ETIMEDOUT,
2022 		[EC_RES_OVERFLOW] = -EOVERFLOW,
2023 		[EC_RES_INVALID_HEADER] = -EBADR,
2024 		[EC_RES_REQUEST_TRUNCATED] = -EBADR,
2025 		[EC_RES_RESPONSE_TOO_BIG] = -EFBIG,
2026 		[EC_RES_BUS_ERROR] = -EFAULT,
2027 		[EC_RES_BUSY] = -EBUSY,
2028 		[EC_RES_INVALID_HEADER_VERSION] = -EBADMSG,
2029 		[EC_RES_INVALID_HEADER_CRC] = -EBADMSG,
2030 		[EC_RES_INVALID_DATA_CRC] = -EBADMSG,
2031 		[EC_RES_DUP_UNAVAILABLE] = -ENODATA,
2032 	};
2033 
2034 	memset(&msg, 0, sizeof(msg));
2035 
2036 	for (i = 0; i < ARRAY_SIZE(map); ++i) {
2037 		mock = cros_kunit_ec_xfer_mock_addx(test, 0, i, 0);
2038 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2039 
2040 		ret = cros_ec_cmd_xfer_status(ec_dev, &msg);
2041 		KUNIT_EXPECT_EQ(test, ret, map[i]);
2042 	}
2043 }
2044 
2045 static void cros_ec_proto_test_get_next_event_no_mkbp_event(struct kunit *test)
2046 {
2047 	struct cros_ec_proto_test_priv *priv = test->priv;
2048 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2049 	struct ec_xfer_mock *mock;
2050 	int ret;
2051 	bool wake_event, more_events;
2052 
2053 	ec_dev->max_request = 0xff;
2054 	ec_dev->max_response = 0xee;
2055 	ec_dev->mkbp_event_supported = 0;
2056 
2057 	/* Set some garbage bytes. */
2058 	wake_event = false;
2059 	more_events = true;
2060 
2061 	/* For get_keyboard_state_event(). */
2062 	{
2063 		union ec_response_get_next_data_v3 *data;
2064 
2065 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
2066 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2067 
2068 		data = (union ec_response_get_next_data_v3 *)mock->o_data;
2069 		data->host_event = 0xbeef;
2070 	}
2071 
2072 	ret = cros_ec_get_next_event(ec_dev, &wake_event, &more_events);
2073 	KUNIT_EXPECT_EQ(test, ret, sizeof(union ec_response_get_next_data_v3));
2074 
2075 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.event_type, EC_MKBP_EVENT_KEY_MATRIX);
2076 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.data.host_event, 0xbeef);
2077 
2078 	KUNIT_EXPECT_TRUE(test, wake_event);
2079 	KUNIT_EXPECT_FALSE(test, more_events);
2080 
2081 	/* For get_keyboard_state_event(). */
2082 	{
2083 		mock = cros_kunit_ec_xfer_mock_next();
2084 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2085 
2086 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
2087 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_MKBP_STATE);
2088 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(union ec_response_get_next_data_v3));
2089 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2090 	}
2091 }
2092 
2093 static void cros_ec_proto_test_get_next_event_mkbp_event_ec_suspended(struct kunit *test)
2094 {
2095 	struct cros_ec_proto_test_priv *priv = test->priv;
2096 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2097 	int ret;
2098 
2099 	ec_dev->mkbp_event_supported = 1;
2100 	ec_dev->suspended = true;
2101 
2102 	ret = cros_ec_get_next_event(ec_dev, NULL, NULL);
2103 	KUNIT_EXPECT_EQ(test, ret, -EHOSTDOWN);
2104 }
2105 
2106 static void cros_ec_proto_test_get_next_event_mkbp_event_version0(struct kunit *test)
2107 {
2108 	struct cros_ec_proto_test_priv *priv = test->priv;
2109 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2110 	struct ec_xfer_mock *mock;
2111 	int ret;
2112 	bool wake_event, more_events;
2113 
2114 	ec_dev->max_request = 0xff;
2115 	ec_dev->max_response = 0xee;
2116 	ec_dev->mkbp_event_supported = 1;
2117 
2118 	/* Set some garbage bytes. */
2119 	wake_event = true;
2120 	more_events = false;
2121 
2122 	/* For get_next_event_xfer(). */
2123 	{
2124 		struct ec_response_get_next_event *data;
2125 
2126 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
2127 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2128 
2129 		data = (struct ec_response_get_next_event *)mock->o_data;
2130 		data->event_type = EC_MKBP_EVENT_SENSOR_FIFO | EC_MKBP_HAS_MORE_EVENTS;
2131 		data->data.sysrq = 0xbeef;
2132 	}
2133 
2134 	ret = cros_ec_get_next_event(ec_dev, &wake_event, &more_events);
2135 	KUNIT_EXPECT_EQ(test, ret, sizeof(struct ec_response_get_next_event));
2136 
2137 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.event_type, EC_MKBP_EVENT_SENSOR_FIFO);
2138 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.data.sysrq, 0xbeef);
2139 
2140 	KUNIT_EXPECT_FALSE(test, wake_event);
2141 	KUNIT_EXPECT_TRUE(test, more_events);
2142 
2143 	/* For get_next_event_xfer(). */
2144 	{
2145 		mock = cros_kunit_ec_xfer_mock_next();
2146 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2147 
2148 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
2149 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_NEXT_EVENT);
2150 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_get_next_event));
2151 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2152 	}
2153 }
2154 
2155 static void cros_ec_proto_test_get_next_event_mkbp_event_version2(struct kunit *test)
2156 {
2157 	struct cros_ec_proto_test_priv *priv = test->priv;
2158 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2159 	struct ec_xfer_mock *mock;
2160 	int ret;
2161 	bool wake_event, more_events;
2162 
2163 	ec_dev->max_request = 0xff;
2164 	ec_dev->max_response = 0xee;
2165 	ec_dev->mkbp_event_supported = 3;
2166 
2167 	/* Set some garbage bytes. */
2168 	wake_event = false;
2169 	more_events = true;
2170 
2171 	/* For get_next_event_xfer(). */
2172 	{
2173 		struct ec_response_get_next_event_v1 *data;
2174 
2175 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
2176 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2177 
2178 		data = (struct ec_response_get_next_event_v1 *)mock->o_data;
2179 		data->event_type = EC_MKBP_EVENT_FINGERPRINT;
2180 		data->data.sysrq = 0xbeef;
2181 	}
2182 
2183 	ret = cros_ec_get_next_event(ec_dev, &wake_event, &more_events);
2184 	KUNIT_EXPECT_EQ(test, ret, sizeof(struct ec_response_get_next_event_v1));
2185 
2186 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.event_type, EC_MKBP_EVENT_FINGERPRINT);
2187 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.data.sysrq, 0xbeef);
2188 
2189 	KUNIT_EXPECT_TRUE(test, wake_event);
2190 	KUNIT_EXPECT_FALSE(test, more_events);
2191 
2192 	/* For get_next_event_xfer(). */
2193 	{
2194 		mock = cros_kunit_ec_xfer_mock_next();
2195 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2196 
2197 		KUNIT_EXPECT_EQ(test, mock->msg.version, 2);
2198 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_NEXT_EVENT);
2199 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
2200 				sizeof(struct ec_response_get_next_event_v1));
2201 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2202 	}
2203 }
2204 
2205 static void cros_ec_proto_test_get_next_event_mkbp_event_host_event_rtc(struct kunit *test)
2206 {
2207 	struct cros_ec_proto_test_priv *priv = test->priv;
2208 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2209 	struct ec_xfer_mock *mock;
2210 	int ret;
2211 	bool wake_event;
2212 	struct ec_response_get_next_event_v1 *data;
2213 
2214 	ec_dev->max_request = 0xff;
2215 	ec_dev->max_response = 0xee;
2216 	ec_dev->mkbp_event_supported = 3;
2217 	ec_dev->host_event_wake_mask = U32_MAX;
2218 
2219 	/* Set some garbage bytes. */
2220 	wake_event = true;
2221 
2222 	/* For get_next_event_xfer(). */
2223 	{
2224 		mock = cros_kunit_ec_xfer_mock_add(test,
2225 						   sizeof(data->event_type) +
2226 						   sizeof(data->data.host_event));
2227 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2228 
2229 		data = (struct ec_response_get_next_event_v1 *)mock->o_data;
2230 		data->event_type = EC_MKBP_EVENT_HOST_EVENT;
2231 		put_unaligned_le32(EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC), &data->data.host_event);
2232 	}
2233 
2234 	ret = cros_ec_get_next_event(ec_dev, &wake_event, NULL);
2235 	KUNIT_EXPECT_EQ(test, ret, sizeof(data->event_type) + sizeof(data->data.host_event));
2236 
2237 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.event_type, EC_MKBP_EVENT_HOST_EVENT);
2238 
2239 	KUNIT_EXPECT_FALSE(test, wake_event);
2240 
2241 	/* For get_next_event_xfer(). */
2242 	{
2243 		mock = cros_kunit_ec_xfer_mock_next();
2244 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2245 
2246 		KUNIT_EXPECT_EQ(test, mock->msg.version, 2);
2247 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_NEXT_EVENT);
2248 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
2249 				sizeof(struct ec_response_get_next_event_v1));
2250 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2251 	}
2252 }
2253 
2254 static void cros_ec_proto_test_get_next_event_mkbp_event_host_event_masked(struct kunit *test)
2255 {
2256 	struct cros_ec_proto_test_priv *priv = test->priv;
2257 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2258 	struct ec_xfer_mock *mock;
2259 	int ret;
2260 	bool wake_event;
2261 	struct ec_response_get_next_event_v1 *data;
2262 
2263 	ec_dev->max_request = 0xff;
2264 	ec_dev->max_response = 0xee;
2265 	ec_dev->mkbp_event_supported = 3;
2266 	ec_dev->host_event_wake_mask = U32_MAX & ~EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED);
2267 
2268 	/* Set some garbage bytes. */
2269 	wake_event = true;
2270 
2271 	/* For get_next_event_xfer(). */
2272 	{
2273 		mock = cros_kunit_ec_xfer_mock_add(test,
2274 						   sizeof(data->event_type) +
2275 						   sizeof(data->data.host_event));
2276 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2277 
2278 		data = (struct ec_response_get_next_event_v1 *)mock->o_data;
2279 		data->event_type = EC_MKBP_EVENT_HOST_EVENT;
2280 		put_unaligned_le32(EC_HOST_EVENT_MASK(EC_HOST_EVENT_AC_DISCONNECTED),
2281 				   &data->data.host_event);
2282 	}
2283 
2284 	ret = cros_ec_get_next_event(ec_dev, &wake_event, NULL);
2285 	KUNIT_EXPECT_EQ(test, ret, sizeof(data->event_type) + sizeof(data->data.host_event));
2286 
2287 	KUNIT_EXPECT_EQ(test, ec_dev->event_data.event_type, EC_MKBP_EVENT_HOST_EVENT);
2288 
2289 	KUNIT_EXPECT_FALSE(test, wake_event);
2290 
2291 	/* For get_next_event_xfer(). */
2292 	{
2293 		mock = cros_kunit_ec_xfer_mock_next();
2294 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2295 
2296 		KUNIT_EXPECT_EQ(test, mock->msg.version, 2);
2297 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_NEXT_EVENT);
2298 		KUNIT_EXPECT_EQ(test, mock->msg.insize,
2299 				sizeof(struct ec_response_get_next_event_v1));
2300 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2301 	}
2302 }
2303 
2304 static void cros_ec_proto_test_get_host_event_no_mkbp_event(struct kunit *test)
2305 {
2306 	struct cros_ec_proto_test_priv *priv = test->priv;
2307 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2308 	int ret;
2309 
2310 	ec_dev->mkbp_event_supported = 0;
2311 
2312 	ret = cros_ec_get_host_event(ec_dev);
2313 	KUNIT_EXPECT_EQ(test, ret, 0);
2314 }
2315 
2316 static void cros_ec_proto_test_get_host_event_not_host_event(struct kunit *test)
2317 {
2318 	struct cros_ec_proto_test_priv *priv = test->priv;
2319 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2320 	int ret;
2321 
2322 	ec_dev->mkbp_event_supported = 1;
2323 	ec_dev->event_data.event_type = EC_MKBP_EVENT_FINGERPRINT;
2324 
2325 	ret = cros_ec_get_host_event(ec_dev);
2326 	KUNIT_EXPECT_EQ(test, ret, 0);
2327 }
2328 
2329 static void cros_ec_proto_test_get_host_event_wrong_event_size(struct kunit *test)
2330 {
2331 	struct cros_ec_proto_test_priv *priv = test->priv;
2332 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2333 	int ret;
2334 
2335 	ec_dev->mkbp_event_supported = 1;
2336 	ec_dev->event_data.event_type = EC_MKBP_EVENT_HOST_EVENT;
2337 	ec_dev->event_size = 0xff;
2338 
2339 	ret = cros_ec_get_host_event(ec_dev);
2340 	KUNIT_EXPECT_EQ(test, ret, 0);
2341 }
2342 
2343 static void cros_ec_proto_test_get_host_event_normal(struct kunit *test)
2344 {
2345 	struct cros_ec_proto_test_priv *priv = test->priv;
2346 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2347 	int ret;
2348 
2349 	ec_dev->mkbp_event_supported = 1;
2350 	ec_dev->event_data.event_type = EC_MKBP_EVENT_HOST_EVENT;
2351 	ec_dev->event_size = sizeof(ec_dev->event_data.data.host_event);
2352 	put_unaligned_le32(EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC),
2353 			   &ec_dev->event_data.data.host_event);
2354 
2355 	ret = cros_ec_get_host_event(ec_dev);
2356 	KUNIT_EXPECT_EQ(test, ret, EC_HOST_EVENT_MASK(EC_HOST_EVENT_RTC));
2357 }
2358 
2359 static void cros_ec_proto_test_check_features_cached(struct kunit *test)
2360 {
2361 	int ret, i;
2362 	static struct cros_ec_dev ec;
2363 
2364 	ec.features.flags[0] = EC_FEATURE_MASK_0(EC_FEATURE_FINGERPRINT);
2365 	ec.features.flags[1] = EC_FEATURE_MASK_0(EC_FEATURE_SCP);
2366 
2367 	for (i = 0; i < EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK; ++i) {
2368 		ret = cros_ec_check_features(&ec, i);
2369 		switch (i) {
2370 		case EC_FEATURE_FINGERPRINT:
2371 		case EC_FEATURE_SCP:
2372 			KUNIT_EXPECT_TRUE(test, ret);
2373 			break;
2374 		default:
2375 			KUNIT_EXPECT_FALSE(test, ret);
2376 			break;
2377 		}
2378 	}
2379 }
2380 
2381 static void cros_ec_proto_test_check_features_not_cached(struct kunit *test)
2382 {
2383 	struct cros_ec_proto_test_priv *priv = test->priv;
2384 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2385 	struct ec_xfer_mock *mock;
2386 	int ret, i;
2387 	static struct cros_ec_dev ec;
2388 
2389 	ec_dev->max_request = 0xff;
2390 	ec_dev->max_response = 0xee;
2391 	ec.ec_dev = ec_dev;
2392 	ec.dev = ec_dev->dev;
2393 	ec.cmd_offset = 0;
2394 	ec.features.flags[0] = -1;
2395 	ec.features.flags[1] = -1;
2396 
2397 	/* For EC_CMD_GET_FEATURES. */
2398 	{
2399 		struct ec_response_get_features *data;
2400 
2401 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
2402 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2403 
2404 		data = (struct ec_response_get_features *)mock->o_data;
2405 		data->flags[0] = EC_FEATURE_MASK_0(EC_FEATURE_FINGERPRINT);
2406 		data->flags[1] = EC_FEATURE_MASK_0(EC_FEATURE_SCP);
2407 	}
2408 
2409 	for (i = 0; i < EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK; ++i) {
2410 		ret = cros_ec_check_features(&ec, i);
2411 		switch (i) {
2412 		case EC_FEATURE_FINGERPRINT:
2413 		case EC_FEATURE_SCP:
2414 			KUNIT_EXPECT_TRUE(test, ret);
2415 			break;
2416 		default:
2417 			KUNIT_EXPECT_FALSE(test, ret);
2418 			break;
2419 		}
2420 	}
2421 
2422 	/* For EC_CMD_GET_FEATURES. */
2423 	{
2424 		mock = cros_kunit_ec_xfer_mock_next();
2425 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2426 
2427 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0);
2428 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_GET_FEATURES);
2429 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_get_features));
2430 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0);
2431 	}
2432 }
2433 
2434 static void cros_ec_proto_test_get_sensor_count_normal(struct kunit *test)
2435 {
2436 	struct cros_ec_proto_test_priv *priv = test->priv;
2437 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2438 	struct ec_xfer_mock *mock;
2439 	int ret;
2440 	static struct cros_ec_dev ec;
2441 
2442 	ec_dev->max_request = 0xff;
2443 	ec_dev->max_response = 0xee;
2444 	ec.ec_dev = ec_dev;
2445 	ec.dev = ec_dev->dev;
2446 	ec.cmd_offset = 0;
2447 
2448 	/* For EC_CMD_MOTION_SENSE_CMD. */
2449 	{
2450 		struct ec_response_motion_sense *data;
2451 
2452 		mock = cros_kunit_ec_xfer_mock_add(test, sizeof(*data));
2453 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2454 
2455 		data = (struct ec_response_motion_sense *)mock->o_data;
2456 		data->dump.sensor_count = 0xbf;
2457 	}
2458 
2459 	ret = cros_ec_get_sensor_count(&ec);
2460 	KUNIT_EXPECT_EQ(test, ret, 0xbf);
2461 
2462 	/* For EC_CMD_MOTION_SENSE_CMD. */
2463 	{
2464 		struct ec_params_motion_sense *data;
2465 
2466 		mock = cros_kunit_ec_xfer_mock_next();
2467 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2468 
2469 		KUNIT_EXPECT_EQ(test, mock->msg.version, 1);
2470 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_MOTION_SENSE_CMD);
2471 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_motion_sense));
2472 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
2473 
2474 		data = (struct ec_params_motion_sense *)mock->i_data;
2475 		KUNIT_EXPECT_EQ(test, data->cmd, MOTIONSENSE_CMD_DUMP);
2476 	}
2477 }
2478 
2479 static void cros_ec_proto_test_get_sensor_count_xfer_error(struct kunit *test)
2480 {
2481 	struct cros_ec_proto_test_priv *priv = test->priv;
2482 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2483 	struct ec_xfer_mock *mock;
2484 	int ret;
2485 	static struct cros_ec_dev ec;
2486 
2487 	ec_dev->max_request = 0xff;
2488 	ec_dev->max_response = 0xee;
2489 	ec.ec_dev = ec_dev;
2490 	ec.dev = ec_dev->dev;
2491 	ec.cmd_offset = 0;
2492 
2493 	/* For EC_CMD_MOTION_SENSE_CMD. */
2494 	{
2495 		mock = cros_kunit_ec_xfer_mock_addx(test, -EPROTO, EC_RES_SUCCESS, 0);
2496 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2497 	}
2498 
2499 	ret = cros_ec_get_sensor_count(&ec);
2500 	KUNIT_EXPECT_EQ(test, ret, -EPROTO);
2501 
2502 	/* For EC_CMD_MOTION_SENSE_CMD. */
2503 	{
2504 		struct ec_params_motion_sense *data;
2505 
2506 		mock = cros_kunit_ec_xfer_mock_next();
2507 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2508 
2509 		KUNIT_EXPECT_EQ(test, mock->msg.version, 1);
2510 		KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_MOTION_SENSE_CMD);
2511 		KUNIT_EXPECT_EQ(test, mock->msg.insize, sizeof(struct ec_response_motion_sense));
2512 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
2513 
2514 		data = (struct ec_params_motion_sense *)mock->i_data;
2515 		KUNIT_EXPECT_EQ(test, data->cmd, MOTIONSENSE_CMD_DUMP);
2516 	}
2517 }
2518 
2519 static void cros_ec_proto_test_get_sensor_count_legacy(struct kunit *test)
2520 {
2521 	struct cros_ec_proto_test_priv *priv = test->priv;
2522 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2523 	struct ec_xfer_mock *mock;
2524 	int ret, i;
2525 	static struct cros_ec_dev ec;
2526 	struct {
2527 		u8 readmem_data;
2528 		int expected_result;
2529 	} test_data[] = {
2530 		{ 0, 0 },
2531 		{ EC_MEMMAP_ACC_STATUS_PRESENCE_BIT, 2 },
2532 	};
2533 
2534 	ec_dev->max_request = 0xff;
2535 	ec_dev->max_response = 0xee;
2536 	ec_dev->cmd_readmem = cros_kunit_readmem_mock;
2537 	ec.ec_dev = ec_dev;
2538 	ec.dev = ec_dev->dev;
2539 	ec.cmd_offset = 0;
2540 
2541 	for (i = 0; i < ARRAY_SIZE(test_data); ++i) {
2542 		/* For EC_CMD_MOTION_SENSE_CMD. */
2543 		{
2544 			mock = cros_kunit_ec_xfer_mock_addx(test, -EPROTO, EC_RES_SUCCESS, 0);
2545 			KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2546 		}
2547 
2548 		/* For readmem. */
2549 		{
2550 			cros_kunit_readmem_mock_data = kunit_kzalloc(test, 1, GFP_KERNEL);
2551 			KUNIT_ASSERT_PTR_NE(test, cros_kunit_readmem_mock_data, NULL);
2552 			cros_kunit_readmem_mock_data[0] = test_data[i].readmem_data;
2553 
2554 			cros_kunit_ec_xfer_mock_default_ret = 1;
2555 		}
2556 
2557 		ret = cros_ec_get_sensor_count(&ec);
2558 		KUNIT_EXPECT_EQ(test, ret, test_data[i].expected_result);
2559 
2560 		/* For EC_CMD_MOTION_SENSE_CMD. */
2561 		{
2562 			struct ec_params_motion_sense *data;
2563 
2564 			mock = cros_kunit_ec_xfer_mock_next();
2565 			KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2566 
2567 			KUNIT_EXPECT_EQ(test, mock->msg.version, 1);
2568 			KUNIT_EXPECT_EQ(test, mock->msg.command, EC_CMD_MOTION_SENSE_CMD);
2569 			KUNIT_EXPECT_EQ(test, mock->msg.insize,
2570 					sizeof(struct ec_response_motion_sense));
2571 			KUNIT_EXPECT_EQ(test, mock->msg.outsize, sizeof(*data));
2572 
2573 			data = (struct ec_params_motion_sense *)mock->i_data;
2574 			KUNIT_EXPECT_EQ(test, data->cmd, MOTIONSENSE_CMD_DUMP);
2575 		}
2576 
2577 		/* For readmem. */
2578 		{
2579 			KUNIT_EXPECT_EQ(test, cros_kunit_readmem_mock_offset, EC_MEMMAP_ACC_STATUS);
2580 		}
2581 	}
2582 }
2583 
2584 static void cros_ec_proto_test_ec_cmd(struct kunit *test)
2585 {
2586 	struct cros_ec_proto_test_priv *priv = test->priv;
2587 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2588 	struct ec_xfer_mock *mock;
2589 	int ret;
2590 	u8 out[3], in[2];
2591 
2592 	ec_dev->max_request = 0xff;
2593 	ec_dev->max_response = 0xee;
2594 
2595 	out[0] = 0xdd;
2596 	out[1] = 0xcc;
2597 	out[2] = 0xbb;
2598 
2599 	{
2600 		u8 *data;
2601 
2602 		mock = cros_kunit_ec_xfer_mock_add(test, 2);
2603 		KUNIT_ASSERT_PTR_NE(test, mock, NULL);
2604 
2605 		data = (u8 *)mock->o_data;
2606 		data[0] = 0xaa;
2607 		data[1] = 0x99;
2608 	}
2609 
2610 	ret = cros_ec_cmd(ec_dev, 0x88, 0x77, out, ARRAY_SIZE(out), in, ARRAY_SIZE(in));
2611 	KUNIT_EXPECT_EQ(test, ret, 2);
2612 
2613 	{
2614 		u8 *data;
2615 
2616 		mock = cros_kunit_ec_xfer_mock_next();
2617 		KUNIT_EXPECT_PTR_NE(test, mock, NULL);
2618 
2619 		KUNIT_EXPECT_EQ(test, mock->msg.version, 0x88);
2620 		KUNIT_EXPECT_EQ(test, mock->msg.command, 0x77);
2621 		KUNIT_EXPECT_EQ(test, mock->msg.insize, ARRAY_SIZE(in));
2622 		KUNIT_EXPECT_EQ(test, mock->msg.outsize, ARRAY_SIZE(out));
2623 
2624 		data = (u8 *)mock->i_data;
2625 		KUNIT_EXPECT_EQ(test, data[0], 0xdd);
2626 		KUNIT_EXPECT_EQ(test, data[1], 0xcc);
2627 		KUNIT_EXPECT_EQ(test, data[2], 0xbb);
2628 	}
2629 }
2630 
2631 static void cros_ec_proto_test_release(struct device *dev)
2632 {
2633 }
2634 
2635 static int cros_ec_proto_test_init(struct kunit *test)
2636 {
2637 	struct cros_ec_proto_test_priv *priv;
2638 	struct cros_ec_device *ec_dev;
2639 
2640 	priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
2641 	if (!priv)
2642 		return -ENOMEM;
2643 	test->priv = priv;
2644 
2645 	ec_dev = &priv->ec_dev;
2646 	ec_dev->dout = (u8 *)priv->dout;
2647 	ec_dev->dout_size = ARRAY_SIZE(priv->dout);
2648 	ec_dev->din = (u8 *)priv->din;
2649 	ec_dev->din_size = ARRAY_SIZE(priv->din);
2650 	ec_dev->proto_version = EC_HOST_REQUEST_VERSION;
2651 	ec_dev->dev = kunit_kzalloc(test, sizeof(*ec_dev->dev), GFP_KERNEL);
2652 	if (!ec_dev->dev)
2653 		return -ENOMEM;
2654 	device_initialize(ec_dev->dev);
2655 	dev_set_name(ec_dev->dev, "cros_ec_proto_test");
2656 	ec_dev->dev->release = cros_ec_proto_test_release;
2657 	ec_dev->cmd_xfer = cros_kunit_ec_xfer_mock;
2658 	ec_dev->pkt_xfer = cros_kunit_ec_xfer_mock;
2659 	mutex_init(&ec_dev->lock);
2660 
2661 	priv->msg = (struct cros_ec_command *)priv->_msg;
2662 
2663 	cros_kunit_mock_reset();
2664 
2665 	return 0;
2666 }
2667 
2668 static void cros_ec_proto_test_exit(struct kunit *test)
2669 {
2670 	struct cros_ec_proto_test_priv *priv = test->priv;
2671 	struct cros_ec_device *ec_dev = &priv->ec_dev;
2672 
2673 	put_device(ec_dev->dev);
2674 }
2675 
2676 static struct kunit_case cros_ec_proto_test_cases[] = {
2677 	KUNIT_CASE(cros_ec_proto_test_prepare_tx_legacy_normal),
2678 	KUNIT_CASE(cros_ec_proto_test_prepare_tx_legacy_bad_msg_outsize),
2679 	KUNIT_CASE(cros_ec_proto_test_prepare_tx_normal),
2680 	KUNIT_CASE(cros_ec_proto_test_prepare_tx_bad_msg_outsize),
2681 	KUNIT_CASE(cros_ec_proto_test_check_result),
2682 	KUNIT_CASE(cros_ec_proto_test_query_all_normal),
2683 	KUNIT_CASE(cros_ec_proto_test_query_all_no_pd_return_error),
2684 	KUNIT_CASE(cros_ec_proto_test_query_all_no_pd_return0),
2685 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_normal_v3_return_error),
2686 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_normal_v3_return0),
2687 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_xfer_error),
2688 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return_error),
2689 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_data_error),
2690 	KUNIT_CASE(cros_ec_proto_test_query_all_legacy_return0),
2691 	KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp),
2692 	KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp_return_error),
2693 	KUNIT_CASE(cros_ec_proto_test_query_all_no_mkbp_return0),
2694 	KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep),
2695 	KUNIT_CASE(cros_ec_proto_test_query_all_no_host_sleep_return0),
2696 	KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return_error),
2697 	KUNIT_CASE(cros_ec_proto_test_query_all_default_wake_mask_return0),
2698 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_normal),
2699 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_excess_msg_insize),
2700 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_excess_msg_outsize_without_passthru),
2701 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_excess_msg_outsize_with_passthru),
2702 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_protocol_v3_normal),
2703 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_protocol_v3_no_op),
2704 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_protocol_v2_normal),
2705 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_protocol_v2_no_op),
2706 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_normal),
2707 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_retries_eagain),
2708 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_retries_status_processing),
2709 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_xfer_error),
2710 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_return_error),
2711 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_in_progress_return0),
2712 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_status_normal),
2713 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_status_xfer_error),
2714 	KUNIT_CASE(cros_ec_proto_test_cmd_xfer_status_return_error),
2715 	KUNIT_CASE(cros_ec_proto_test_get_next_event_no_mkbp_event),
2716 	KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_ec_suspended),
2717 	KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_version0),
2718 	KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_version2),
2719 	KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_host_event_rtc),
2720 	KUNIT_CASE(cros_ec_proto_test_get_next_event_mkbp_event_host_event_masked),
2721 	KUNIT_CASE(cros_ec_proto_test_get_host_event_no_mkbp_event),
2722 	KUNIT_CASE(cros_ec_proto_test_get_host_event_not_host_event),
2723 	KUNIT_CASE(cros_ec_proto_test_get_host_event_wrong_event_size),
2724 	KUNIT_CASE(cros_ec_proto_test_get_host_event_normal),
2725 	KUNIT_CASE(cros_ec_proto_test_check_features_cached),
2726 	KUNIT_CASE(cros_ec_proto_test_check_features_not_cached),
2727 	KUNIT_CASE(cros_ec_proto_test_get_sensor_count_normal),
2728 	KUNIT_CASE(cros_ec_proto_test_get_sensor_count_xfer_error),
2729 	KUNIT_CASE(cros_ec_proto_test_get_sensor_count_legacy),
2730 	KUNIT_CASE(cros_ec_proto_test_ec_cmd),
2731 	{}
2732 };
2733 
2734 static struct kunit_suite cros_ec_proto_test_suite = {
2735 	.name = "cros_ec_proto_test",
2736 	.init = cros_ec_proto_test_init,
2737 	.exit = cros_ec_proto_test_exit,
2738 	.test_cases = cros_ec_proto_test_cases,
2739 };
2740 
2741 kunit_test_suite(cros_ec_proto_test_suite);
2742 
2743 MODULE_DESCRIPTION("Kunit tests for ChromeOS Embedded Controller protocol");
2744 MODULE_LICENSE("GPL");
2745