1// SPDX-License-Identifier: GPL-2.0
2/*
3 * CrOS Kunit tests utilities.
4 */
5
6#include <kunit/test.h>
7
8#include <linux/list.h>
9#include <linux/minmax.h>
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
16int cros_kunit_ec_xfer_mock_default_result;
17int cros_kunit_ec_xfer_mock_default_ret;
18int cros_kunit_ec_cmd_xfer_mock_called;
19int cros_kunit_ec_pkt_xfer_mock_called;
20
21static struct list_head cros_kunit_ec_xfer_mock_in;
22static struct list_head cros_kunit_ec_xfer_mock_out;
23
24int cros_kunit_ec_xfer_mock(struct cros_ec_device *ec_dev, struct cros_ec_command *msg)
25{
26 struct ec_xfer_mock *mock;
27
28 mock = list_first_entry_or_null(&cros_kunit_ec_xfer_mock_in, struct ec_xfer_mock, list);
29 if (!mock) {
30 msg->result = cros_kunit_ec_xfer_mock_default_result;
31 return cros_kunit_ec_xfer_mock_default_ret;
32 }
33
34 list_del(entry: &mock->list);
35
36 memcpy(&mock->msg, msg, sizeof(*msg));
37 if (msg->outsize) {
38 mock->i_data = kunit_kzalloc(test: mock->test, size: msg->outsize, GFP_KERNEL);
39 if (mock->i_data)
40 memcpy(mock->i_data, msg->data, msg->outsize);
41 }
42
43 msg->result = mock->result;
44 if (msg->insize)
45 memcpy(msg->data, mock->o_data, min(msg->insize, mock->o_data_len));
46
47 list_add_tail(new: &mock->list, head: &cros_kunit_ec_xfer_mock_out);
48
49 return mock->ret;
50}
51
52int cros_kunit_ec_cmd_xfer_mock(struct cros_ec_device *ec_dev, struct cros_ec_command *msg)
53{
54 ++cros_kunit_ec_cmd_xfer_mock_called;
55 return cros_kunit_ec_xfer_mock(ec_dev, msg);
56}
57
58int cros_kunit_ec_pkt_xfer_mock(struct cros_ec_device *ec_dev, struct cros_ec_command *msg)
59{
60 ++cros_kunit_ec_pkt_xfer_mock_called;
61 return cros_kunit_ec_xfer_mock(ec_dev, msg);
62}
63
64struct ec_xfer_mock *cros_kunit_ec_xfer_mock_add(struct kunit *test, size_t size)
65{
66 return cros_kunit_ec_xfer_mock_addx(test, ret: size, result: EC_RES_SUCCESS, size);
67}
68
69struct ec_xfer_mock *cros_kunit_ec_xfer_mock_addx(struct kunit *test,
70 int ret, int result, size_t size)
71{
72 struct ec_xfer_mock *mock;
73
74 mock = kunit_kzalloc(test, size: sizeof(*mock), GFP_KERNEL);
75 if (!mock)
76 return NULL;
77
78 list_add_tail(new: &mock->list, head: &cros_kunit_ec_xfer_mock_in);
79 mock->test = test;
80
81 mock->ret = ret;
82 mock->result = result;
83 mock->o_data = kunit_kzalloc(test, size, GFP_KERNEL);
84 if (!mock->o_data)
85 return NULL;
86 mock->o_data_len = size;
87
88 return mock;
89}
90
91struct ec_xfer_mock *cros_kunit_ec_xfer_mock_next(void)
92{
93 struct ec_xfer_mock *mock;
94
95 mock = list_first_entry_or_null(&cros_kunit_ec_xfer_mock_out, struct ec_xfer_mock, list);
96 if (mock)
97 list_del(entry: &mock->list);
98
99 return mock;
100}
101
102int cros_kunit_readmem_mock_offset;
103u8 *cros_kunit_readmem_mock_data;
104int cros_kunit_readmem_mock_ret;
105
106int cros_kunit_readmem_mock(struct cros_ec_device *ec_dev, unsigned int offset,
107 unsigned int bytes, void *dest)
108{
109 cros_kunit_readmem_mock_offset = offset;
110
111 memcpy(dest, cros_kunit_readmem_mock_data, bytes);
112
113 return cros_kunit_readmem_mock_ret;
114}
115
116void cros_kunit_mock_reset(void)
117{
118 cros_kunit_ec_xfer_mock_default_result = 0;
119 cros_kunit_ec_xfer_mock_default_ret = 0;
120 cros_kunit_ec_cmd_xfer_mock_called = 0;
121 cros_kunit_ec_pkt_xfer_mock_called = 0;
122 INIT_LIST_HEAD(list: &cros_kunit_ec_xfer_mock_in);
123 INIT_LIST_HEAD(list: &cros_kunit_ec_xfer_mock_out);
124
125 cros_kunit_readmem_mock_offset = 0;
126 cros_kunit_readmem_mock_data = NULL;
127 cros_kunit_readmem_mock_ret = 0;
128}
129

source code of linux/drivers/platform/chrome/cros_ec_proto_test_util.c