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
compare_string(QI2CDevice * i2cdev,uint8_t reg,const char * test_str)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
write_and_compare_string(QI2CDevice * i2cdev,uint8_t reg,const char * test_str,uint8_t len)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
test_defaults(void * obj,void * data,QGuestAllocator * alloc)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 */
test_rw_regs(void * obj,void * data,QGuestAllocator * alloc)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
adm1266_register_nodes(void)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