aboutsummaryrefslogtreecommitdiff
path: root/src/zenmonitor-lib.c
blob: 4fc05384071b9092aa9add58a8206e03ca810b13 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
#include <assert.h>
#include <cpuid.h>
#include <strings.h>
#include <time.h>

#include "zenpower.h"
#include "msr.h"
#include "os.h"
#include "zenmonitor.h"

#define AMD_STRING "AuthenticAMD"
#define ZEN_FAMILY 0x17

const guint SENSOR_DATA_STORE_NUM = 4096;

// AMD PPR = https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf

gboolean check_zen() {
    guint32 eax = 0, ebx = 0, ecx = 0, edx = 0, ext_family;
    char vendor[13];

    __get_cpuid(0, &eax, &ebx, &ecx, &edx);

    memcpy(vendor, &ebx, 4);
    memcpy(vendor+4, &edx, 4);
    memcpy(vendor+8, &ecx, 4);
    vendor[12] = 0;

    if (strcmp(vendor, AMD_STRING) != 0){
        return FALSE;
    }

    __get_cpuid(1, &eax, &ebx, &ecx, &edx);

    ext_family = ((eax >> 8) & 0xF) + ((eax >> 20) & 0xFF);
    if (ext_family != ZEN_FAMILY){
        return FALSE;
    }

    return TRUE;
}

gchar *cpu_model() {
    guint32 eax = 0, ebx = 0, ecx = 0, edx = 0;
    char model[48];

    // AMD PPR: page 65-68 - CPUID_Fn80000002_EAX-CPUID_Fn80000004_EDX
    __get_cpuid(0x80000002, &eax, &ebx, &ecx, &edx);
    memcpy(model, &eax, 4);
    memcpy(model+4, &ebx, 4);
    memcpy(model+8, &ecx, 4);
    memcpy(model+12, &edx, 4);

    __get_cpuid(0x80000003, &eax, &ebx, &ecx, &edx);
    memcpy(model+16, &eax, 4);
    memcpy(model+20, &ebx, 4);
    memcpy(model+24, &ecx, 4);
    memcpy(model+28, &edx, 4);

    __get_cpuid(0x80000004, &eax, &ebx, &ecx, &edx);
    memcpy(model+32, &eax, 4);
    memcpy(model+36, &ebx, 4);
    memcpy(model+40, &ecx, 4);
    memcpy(model+44, &edx, 4);

    model[48] = 0;
    return g_strdup(g_strchomp(model));
}

guint get_core_count() {
    guint eax = 0, ebx = 0, ecx = 0, edx = 0;
    guint logical_cpus, threads_per_code;

    // AMD PPR: page 57 - CPUID_Fn00000001_EBX
    __get_cpuid(1, &eax, &ebx, &ecx, &edx);
    logical_cpus = (ebx >> 16) & 0xFF;

    // AMD PPR: page 82 - CPUID_Fn8000001E_EBX
    __get_cpuid(0x8000001E, &eax, &ebx, &ecx, &edx);
    threads_per_code = ((ebx >> 8) & 0xF) + 1;

    if (threads_per_code == 0)
        return logical_cpus;

    return logical_cpus / threads_per_code;
}

SensorDataStore *sensor_data_store_new()
{
    SensorDataStore *ret;

    ret = g_new0(SensorDataStore, 1);
    ret->labels = g_ptr_array_new();
    ret->data = g_ptr_array_new();
    ret->time = g_array_new(FALSE, TRUE, sizeof(struct timespec));

    return ret;
}

void sensor_data_store_add_entry(SensorDataStore *store, gchar *entry)
{
    GArray *data;
    data = g_array_new(TRUE, TRUE, sizeof(float));

    g_ptr_array_add(store->labels, entry);
    g_ptr_array_add(store->data, data);
}

void sensor_data_store_keep_time(SensorDataStore *store)
{
    struct timespec ts;
    timespec_get(&ts, TIME_UTC);
    g_array_append_val(store->time, ts);
}

gint sensor_data_store_drop_entry(SensorDataStore *store, gchar *entry)
{
    guint index = 0;
    gboolean found = g_ptr_array_find(store->labels, entry, &index);
    if(!found)
    {
        return 1;
    }

    g_ptr_array_remove_index(store->labels, index);
    g_ptr_array_remove_index(store->data, index);
    
    return 0;
}

gint sensor_data_store_add_data(SensorDataStore *store, gchar *entry, float value)
{
    guint index = 0;
    gboolean found = g_ptr_array_find(store->labels, entry, &index);

    if(!found)
    {
        return 1;
    }

    GArray *data = g_ptr_array_index(store->data, index);
    g_array_append_val(data, value);

    return 0;
}

void sensor_data_store_free(SensorDataStore *store)
{
    if(store)
    {
        g_array_free(store->time, TRUE);
        g_ptr_array_free(store->labels, TRUE);
        g_ptr_array_free(store->data, TRUE);
        g_free(store);
    }
}

SensorInit *sensor_init_new() {
    return g_new0(SensorInit, 1);
}

void sensor_init_free(SensorInit *s) {
    if (s) {
        g_free(s->label);
        g_free(s->hint);
        g_free(s);
    }
}