xref: /openbmc/qemu/tests/qtest/adm1266-test.c (revision 05caa062)
1 /*
2  * Analog Devices ADM1266 Cascadable Super Sequencer with Margin Control and
3  * Fault Recording with PMBus
4  *
5  * Copyright 2022 Google LLC
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  */
9 
10 #include "qemu/osdep.h"
11 #include <math.h>
12 #include "hw/i2c/pmbus_device.h"
13 #include "libqtest-single.h"
14 #include "libqos/qgraph.h"
15 #include "libqos/i2c.h"
16 #include "qapi/qmp/qdict.h"
17 #include "qapi/qmp/qnum.h"
18 #include "qemu/bitops.h"
19 
20 #define TEST_ID "adm1266-test"
21 #define TEST_ADDR (0x12)
22 
23 #define ADM1266_BLACKBOX_CONFIG                 0xD3
24 #define ADM1266_PDIO_CONFIG                     0xD4
25 #define ADM1266_READ_STATE                      0xD9
26 #define ADM1266_READ_BLACKBOX                   0xDE
27 #define ADM1266_SET_RTC                         0xDF
28 #define ADM1266_GPIO_SYNC_CONFIGURATION         0xE1
29 #define ADM1266_BLACKBOX_INFORMATION            0xE6
30 #define ADM1266_PDIO_STATUS                     0xE9
31 #define ADM1266_GPIO_STATUS                     0xEA
32 
33 /* Defaults */
34 #define ADM1266_OPERATION_DEFAULT               0x80
35 #define ADM1266_CAPABILITY_DEFAULT              0xA0
36 #define ADM1266_CAPABILITY_NO_PEC               0x20
37 #define ADM1266_PMBUS_REVISION_DEFAULT          0x22
38 #define ADM1266_MFR_ID_DEFAULT                  "ADI"
39 #define ADM1266_MFR_ID_DEFAULT_LEN              32
40 #define ADM1266_MFR_MODEL_DEFAULT               "ADM1266-A1"
41 #define ADM1266_MFR_MODEL_DEFAULT_LEN           32
42 #define ADM1266_MFR_REVISION_DEFAULT            "25"
43 #define ADM1266_MFR_REVISION_DEFAULT_LEN        8
44 #define TEST_STRING_A                           "a sample"
45 #define TEST_STRING_B                           "b sample"
46 #define TEST_STRING_C                           "rev c"
47 
48 static void compare_string(QI2CDevice *i2cdev, uint8_t reg,
49                            const char *test_str)
50 {
51     uint8_t len = i2c_get8(i2cdev, reg);
52     char i2c_str[SMBUS_DATA_MAX_LEN] = {0};
53 
54     i2c_read_block(i2cdev, reg, (uint8_t *)i2c_str, len);
55     g_assert_cmpstr(i2c_str, ==, test_str);
56 }
57 
58 static void write_and_compare_string(QI2CDevice *i2cdev, uint8_t reg,
59                                      const char *test_str, uint8_t len)
60 {
61     char buf[SMBUS_DATA_MAX_LEN] = {0};
62     buf[0] = len;
63     strncpy(buf + 1, test_str, len);
64     i2c_write_block(i2cdev, reg, (uint8_t *)buf, len + 1);
65     compare_string(i2cdev, reg, test_str);
66 }
67 
68 static void test_defaults(void *obj, void *data, QGuestAllocator *alloc)
69 {
70     uint16_t i2c_value;
71     QI2CDevice *i2cdev = (QI2CDevice *)obj;
72 
73     i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
74     g_assert_cmphex(i2c_value, ==, ADM1266_OPERATION_DEFAULT);
75 
76     i2c_value = i2c_get8(i2cdev, PMBUS_REVISION);
77     g_assert_cmphex(i2c_value, ==, ADM1266_PMBUS_REVISION_DEFAULT);
78 
79     compare_string(i2cdev, PMBUS_MFR_ID, ADM1266_MFR_ID_DEFAULT);
80     compare_string(i2cdev, PMBUS_MFR_MODEL, ADM1266_MFR_MODEL_DEFAULT);
81     compare_string(i2cdev, PMBUS_MFR_REVISION, ADM1266_MFR_REVISION_DEFAULT);
82 }
83 
84 /* test r/w registers */
85 static void test_rw_regs(void *obj, void *data, QGuestAllocator *alloc)
86 {
87     QI2CDevice *i2cdev = (QI2CDevice *)obj;
88 
89     /* empty strings */
90     i2c_set8(i2cdev, PMBUS_MFR_ID, 0);
91     compare_string(i2cdev, PMBUS_MFR_ID, "");
92 
93     i2c_set8(i2cdev, PMBUS_MFR_MODEL, 0);
94     compare_string(i2cdev, PMBUS_MFR_MODEL, "");
95 
96     i2c_set8(i2cdev, PMBUS_MFR_REVISION, 0);
97     compare_string(i2cdev, PMBUS_MFR_REVISION, "");
98 
99     /* test strings */
100     write_and_compare_string(i2cdev, PMBUS_MFR_ID, TEST_STRING_A,
101                              sizeof(TEST_STRING_A));
102     write_and_compare_string(i2cdev, PMBUS_MFR_ID, TEST_STRING_B,
103                              sizeof(TEST_STRING_B));
104     write_and_compare_string(i2cdev, PMBUS_MFR_ID, TEST_STRING_C,
105                              sizeof(TEST_STRING_C));
106 }
107 
108 static void adm1266_register_nodes(void)
109 {
110     QOSGraphEdgeOptions opts = {
111         .extra_device_opts = "id=" TEST_ID ",address=0x12"
112     };
113     add_qi2c_address(&opts, &(QI2CAddress) { TEST_ADDR });
114 
115     qos_node_create_driver("adm1266", i2c_device_create);
116     qos_node_consumes("adm1266", "i2c-bus", &opts);
117 
118     qos_add_test("test_defaults", "adm1266", test_defaults, NULL);
119     qos_add_test("test_rw_regs", "adm1266", test_rw_regs, NULL);
120 }
121 
122 libqos_init(adm1266_register_nodes);
123