cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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adm1272-test.c (16905B)


      1/*
      2 * QTests for the ADM1272 hotswap controller
      3 *
      4 * Copyright 2021 Google LLC
      5 *
      6 * SPDX-License-Identifier: GPL-2.0-or-later
      7 */
      8
      9#include "qemu/osdep.h"
     10#include <math.h>
     11#include "hw/i2c/pmbus_device.h"
     12#include "libqtest-single.h"
     13#include "libqos/qgraph.h"
     14#include "libqos/i2c.h"
     15#include "qapi/qmp/qdict.h"
     16#include "qapi/qmp/qnum.h"
     17#include "qemu/bitops.h"
     18
     19#define TEST_ID "adm1272-test"
     20#define TEST_ADDR (0x10)
     21
     22#define ADM1272_RESTART_TIME            0xCC
     23#define ADM1272_MFR_PEAK_IOUT           0xD0
     24#define ADM1272_MFR_PEAK_VIN            0xD1
     25#define ADM1272_MFR_PEAK_VOUT           0xD2
     26#define ADM1272_MFR_PMON_CONTROL        0xD3
     27#define ADM1272_MFR_PMON_CONFIG         0xD4
     28#define ADM1272_MFR_ALERT1_CONFIG       0xD5
     29#define ADM1272_MFR_ALERT2_CONFIG       0xD6
     30#define ADM1272_MFR_PEAK_TEMPERATURE    0xD7
     31#define ADM1272_MFR_DEVICE_CONFIG       0xD8
     32#define ADM1272_MFR_POWER_CYCLE         0xD9
     33#define ADM1272_MFR_PEAK_PIN            0xDA
     34#define ADM1272_MFR_READ_PIN_EXT        0xDB
     35#define ADM1272_MFR_READ_EIN_EXT        0xDC
     36
     37#define ADM1272_HYSTERESIS_LOW          0xF2
     38#define ADM1272_HYSTERESIS_HIGH         0xF3
     39#define ADM1272_STATUS_HYSTERESIS       0xF4
     40#define ADM1272_STATUS_GPIO             0xF5
     41#define ADM1272_STRT_UP_IOUT_LIM        0xF6
     42
     43/* Defaults */
     44#define ADM1272_OPERATION_DEFAULT       0x80
     45#define ADM1272_CAPABILITY_DEFAULT      0xB0
     46#define ADM1272_CAPABILITY_NO_PEC       0x30
     47#define ADM1272_DIRECT_MODE             0x40
     48#define ADM1272_HIGH_LIMIT_DEFAULT      0x0FFF
     49#define ADM1272_PIN_OP_DEFAULT          0x7FFF
     50#define ADM1272_PMBUS_REVISION_DEFAULT  0x22
     51#define ADM1272_MFR_ID_DEFAULT          "ADI"
     52#define ADM1272_MODEL_DEFAULT           "ADM1272-A1"
     53#define ADM1272_MFR_DEFAULT_REVISION    "25"
     54#define ADM1272_DEFAULT_DATE            "160301"
     55#define ADM1272_RESTART_TIME_DEFAULT    0x64
     56#define ADM1272_PMON_CONTROL_DEFAULT    0x1
     57#define ADM1272_PMON_CONFIG_DEFAULT     0x3F35
     58#define ADM1272_DEVICE_CONFIG_DEFAULT   0x8
     59#define ADM1272_HYSTERESIS_HIGH_DEFAULT     0xFFFF
     60#define ADM1272_STRT_UP_IOUT_LIM_DEFAULT    0x000F
     61#define ADM1272_VOLT_DEFAULT            12000
     62#define ADM1272_IOUT_DEFAULT            25000
     63#define ADM1272_PWR_DEFAULT             300  /* 12V 25A */
     64#define ADM1272_SHUNT                   300 /* micro-ohms */
     65#define ADM1272_VOLTAGE_COEFF_DEFAULT   1
     66#define ADM1272_CURRENT_COEFF_DEFAULT   3
     67#define ADM1272_PWR_COEFF_DEFAULT       7
     68#define ADM1272_IOUT_OFFSET             0x5000
     69#define ADM1272_IOUT_OFFSET             0x5000
     70
     71static const PMBusCoefficients adm1272_coefficients[] = {
     72    [0] = { 6770, 0, -2 },       /* voltage, vrange 60V */
     73    [1] = { 4062, 0, -2 },       /* voltage, vrange 100V */
     74    [2] = { 1326, 20480, -1 },   /* current, vsense range 15mV */
     75    [3] = { 663, 20480, -1 },    /* current, vsense range 30mV */
     76    [4] = { 3512, 0, -2 },       /* power, vrange 60V, irange 15mV */
     77    [5] = { 21071, 0, -3 },      /* power, vrange 100V, irange 15mV */
     78    [6] = { 17561, 0, -3 },      /* power, vrange 60V, irange 30mV */
     79    [7] = { 10535, 0, -3 },      /* power, vrange 100V, irange 30mV */
     80    [8] = { 42, 31871, -1 },     /* temperature */
     81};
     82
     83uint16_t pmbus_data2direct_mode(PMBusCoefficients c, uint32_t value)
     84{
     85    /* R is usually negative to fit large readings into 16 bits */
     86    uint16_t y = (c.m * value + c.b) * pow(10, c.R);
     87    return y;
     88}
     89
     90uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value)
     91{
     92    /* X = (Y * 10^-R - b) / m */
     93    uint32_t x = (value / pow(10, c.R) - c.b) / c.m;
     94    return x;
     95}
     96
     97
     98static uint16_t adm1272_millivolts_to_direct(uint32_t value)
     99{
    100    PMBusCoefficients c = adm1272_coefficients[ADM1272_VOLTAGE_COEFF_DEFAULT];
    101    c.b = c.b * 1000;
    102    c.R = c.R - 3;
    103    return pmbus_data2direct_mode(c, value);
    104}
    105
    106static uint32_t adm1272_direct_to_millivolts(uint16_t value)
    107{
    108    PMBusCoefficients c = adm1272_coefficients[ADM1272_VOLTAGE_COEFF_DEFAULT];
    109    c.b = c.b * 1000;
    110    c.R = c.R - 3;
    111    return pmbus_direct_mode2data(c, value);
    112}
    113
    114static uint16_t adm1272_milliamps_to_direct(uint32_t value)
    115{
    116    PMBusCoefficients c = adm1272_coefficients[ADM1272_CURRENT_COEFF_DEFAULT];
    117    /* Y = (m * r_sense * x - b) * 10^R */
    118    c.m = c.m * ADM1272_SHUNT / 1000; /* micro-ohms */
    119    c.b = c.b * 1000;
    120    c.R = c.R - 3;
    121    return pmbus_data2direct_mode(c, value);
    122}
    123
    124static uint32_t adm1272_direct_to_milliamps(uint16_t value)
    125{
    126    PMBusCoefficients c = adm1272_coefficients[ADM1272_CURRENT_COEFF_DEFAULT];
    127    c.m = c.m * ADM1272_SHUNT / 1000;
    128    c.b = c.b * 1000;
    129    c.R = c.R - 3;
    130    return pmbus_direct_mode2data(c, value);
    131}
    132
    133static uint16_t adm1272_watts_to_direct(uint32_t value)
    134{
    135    PMBusCoefficients c = adm1272_coefficients[ADM1272_PWR_COEFF_DEFAULT];
    136    c.m = c.m * ADM1272_SHUNT / 1000;
    137    return pmbus_data2direct_mode(c, value);
    138}
    139
    140static uint32_t adm1272_direct_to_watts(uint16_t value)
    141{
    142    PMBusCoefficients c = adm1272_coefficients[ADM1272_PWR_COEFF_DEFAULT];
    143    c.m = c.m * ADM1272_SHUNT / 1000;
    144    return pmbus_direct_mode2data(c, value);
    145}
    146
    147static uint16_t qmp_adm1272_get(const char *id, const char *property)
    148{
    149    QDict *response;
    150    uint64_t ret;
    151
    152    response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, "
    153                   "'property': %s } }", id, property);
    154    g_assert(qdict_haskey(response, "return"));
    155    ret = qnum_get_uint(qobject_to(QNum, qdict_get(response, "return")));
    156    qobject_unref(response);
    157    return ret;
    158}
    159
    160static void qmp_adm1272_set(const char *id,
    161                            const char *property,
    162                            uint16_t value)
    163{
    164    QDict *response;
    165
    166    response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, "
    167                   "'property': %s, 'value': %u } }", id, property, value);
    168    g_assert(qdict_haskey(response, "return"));
    169    qobject_unref(response);
    170}
    171
    172/* PMBus commands are little endian vs i2c_set16 in i2c.h which is big endian */
    173static uint16_t adm1272_i2c_get16(QI2CDevice *i2cdev, uint8_t reg)
    174{
    175    uint8_t resp[2];
    176    i2c_read_block(i2cdev, reg, resp, sizeof(resp));
    177    return (resp[1] << 8) | resp[0];
    178}
    179
    180/* PMBus commands are little endian vs i2c_set16 in i2c.h which is big endian */
    181static void adm1272_i2c_set16(QI2CDevice *i2cdev, uint8_t reg, uint16_t value)
    182{
    183    uint8_t data[2];
    184
    185    data[0] = value & 255;
    186    data[1] = value >> 8;
    187    i2c_write_block(i2cdev, reg, data, sizeof(data));
    188}
    189
    190static void test_defaults(void *obj, void *data, QGuestAllocator *alloc)
    191{
    192    uint16_t value, i2c_value;
    193    int16_t err;
    194    QI2CDevice *i2cdev = (QI2CDevice *)obj;
    195    value = qmp_adm1272_get(TEST_ID, "vout");
    196    err = ADM1272_VOLT_DEFAULT - value;
    197    g_assert_cmpuint(abs(err), <, ADM1272_VOLT_DEFAULT / 20);
    198
    199    i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
    200    g_assert_cmphex(i2c_value, ==, ADM1272_OPERATION_DEFAULT);
    201
    202    i2c_value = i2c_get8(i2cdev, PMBUS_VOUT_MODE);
    203    g_assert_cmphex(i2c_value, ==, ADM1272_DIRECT_MODE);
    204
    205    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT);
    206    g_assert_cmphex(i2c_value, ==, ADM1272_HIGH_LIMIT_DEFAULT);
    207
    208    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT);
    209    g_assert_cmphex(i2c_value, ==, 0);
    210
    211    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_IOUT_OC_WARN_LIMIT);
    212    g_assert_cmphex(i2c_value, ==, ADM1272_HIGH_LIMIT_DEFAULT);
    213
    214    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
    215    g_assert_cmphex(i2c_value, ==, ADM1272_HIGH_LIMIT_DEFAULT);
    216
    217    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
    218    g_assert_cmphex(i2c_value, ==, ADM1272_HIGH_LIMIT_DEFAULT);
    219
    220    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VIN_OV_WARN_LIMIT);
    221    g_assert_cmphex(i2c_value, ==, ADM1272_HIGH_LIMIT_DEFAULT);
    222
    223    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VIN_UV_WARN_LIMIT);
    224    g_assert_cmphex(i2c_value, ==, 0);
    225
    226    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_PIN_OP_WARN_LIMIT);
    227    g_assert_cmphex(i2c_value, ==, ADM1272_PIN_OP_DEFAULT);
    228
    229    i2c_value = i2c_get8(i2cdev, PMBUS_REVISION);
    230    g_assert_cmphex(i2c_value, ==, ADM1272_PMBUS_REVISION_DEFAULT);
    231
    232    i2c_value = i2c_get8(i2cdev, ADM1272_MFR_PMON_CONTROL);
    233    g_assert_cmphex(i2c_value, ==, ADM1272_PMON_CONTROL_DEFAULT);
    234
    235    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_PMON_CONFIG);
    236    g_assert_cmphex(i2c_value, ==, ADM1272_PMON_CONFIG_DEFAULT);
    237
    238    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_DEVICE_CONFIG);
    239    g_assert_cmphex(i2c_value, ==, ADM1272_DEVICE_CONFIG_DEFAULT);
    240
    241    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_HYSTERESIS_HIGH);
    242    g_assert_cmphex(i2c_value, ==, ADM1272_HYSTERESIS_HIGH_DEFAULT);
    243
    244    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_STRT_UP_IOUT_LIM);
    245    g_assert_cmphex(i2c_value, ==, ADM1272_STRT_UP_IOUT_LIM_DEFAULT);
    246}
    247
    248/* test qmp access */
    249static void test_tx_rx(void *obj, void *data, QGuestAllocator *alloc)
    250{
    251    uint16_t i2c_value, value, i2c_voltage, i2c_pwr, lossy_value;
    252    QI2CDevice *i2cdev = (QI2CDevice *)obj;
    253
    254    /* converting to direct mode is lossy - we generate the same loss here */
    255    lossy_value =
    256        adm1272_direct_to_millivolts(adm1272_millivolts_to_direct(1000));
    257    qmp_adm1272_set(TEST_ID, "vin", 1000);
    258    value = qmp_adm1272_get(TEST_ID, "vin");
    259    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VIN);
    260    i2c_voltage = adm1272_direct_to_millivolts(i2c_value);
    261    g_assert_cmpuint(value, ==, i2c_voltage);
    262    g_assert_cmpuint(i2c_voltage, ==, lossy_value);
    263
    264    lossy_value =
    265        adm1272_direct_to_millivolts(adm1272_millivolts_to_direct(1500));
    266    qmp_adm1272_set(TEST_ID, "vout", 1500);
    267    value = qmp_adm1272_get(TEST_ID, "vout");
    268    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VOUT);
    269    i2c_voltage = adm1272_direct_to_millivolts(i2c_value);
    270    g_assert_cmpuint(value, ==, i2c_voltage);
    271    g_assert_cmpuint(i2c_voltage, ==, lossy_value);
    272
    273    lossy_value =
    274        adm1272_direct_to_milliamps(adm1272_milliamps_to_direct(1600));
    275    qmp_adm1272_set(TEST_ID, "iout", 1600);
    276    value = qmp_adm1272_get(TEST_ID, "iout");
    277    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_IOUT);
    278    i2c_value = adm1272_direct_to_milliamps(i2c_value);
    279    g_assert_cmphex(value, ==, i2c_value);
    280    g_assert_cmphex(i2c_value, ==, lossy_value);
    281
    282    lossy_value =
    283        adm1272_direct_to_watts(adm1272_watts_to_direct(320));
    284    qmp_adm1272_set(TEST_ID, "pin", 320);
    285    value = qmp_adm1272_get(TEST_ID, "pin");
    286    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_PIN);
    287    i2c_pwr = adm1272_direct_to_watts(i2c_value);
    288    g_assert_cmphex(value, ==, i2c_pwr);
    289    g_assert_cmphex(i2c_pwr, ==, lossy_value);
    290}
    291
    292/* test r/w registers */
    293static void test_rw_regs(void *obj, void *data, QGuestAllocator *alloc)
    294{
    295    uint16_t i2c_value;
    296    QI2CDevice *i2cdev = (QI2CDevice *)obj;
    297
    298    adm1272_i2c_set16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT, 0xABCD);
    299    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT);
    300    g_assert_cmphex(i2c_value, ==, 0xABCD);
    301
    302    adm1272_i2c_set16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT, 0xCDEF);
    303    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT);
    304    g_assert_cmphex(i2c_value, ==, 0xCDEF);
    305
    306    adm1272_i2c_set16(i2cdev, PMBUS_IOUT_OC_WARN_LIMIT, 0x1234);
    307    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_IOUT_OC_WARN_LIMIT);
    308    g_assert_cmphex(i2c_value, ==, 0x1234);
    309
    310    adm1272_i2c_set16(i2cdev, PMBUS_OT_FAULT_LIMIT, 0x5678);
    311    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_OT_FAULT_LIMIT);
    312    g_assert_cmphex(i2c_value, ==, 0x5678);
    313
    314    adm1272_i2c_set16(i2cdev, PMBUS_OT_WARN_LIMIT, 0xABDC);
    315    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_OT_WARN_LIMIT);
    316    g_assert_cmphex(i2c_value, ==, 0xABDC);
    317
    318    adm1272_i2c_set16(i2cdev, PMBUS_VIN_OV_WARN_LIMIT, 0xCDEF);
    319    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VIN_OV_WARN_LIMIT);
    320    g_assert_cmphex(i2c_value, ==, 0xCDEF);
    321
    322    adm1272_i2c_set16(i2cdev, PMBUS_VIN_UV_WARN_LIMIT, 0x2345);
    323    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_VIN_UV_WARN_LIMIT);
    324    g_assert_cmphex(i2c_value, ==, 0x2345);
    325
    326    i2c_set8(i2cdev, ADM1272_RESTART_TIME, 0xF8);
    327    i2c_value = i2c_get8(i2cdev, ADM1272_RESTART_TIME);
    328    g_assert_cmphex(i2c_value, ==, 0xF8);
    329
    330    i2c_set8(i2cdev, ADM1272_MFR_PMON_CONTROL, 0);
    331    i2c_value = i2c_get8(i2cdev, ADM1272_MFR_PMON_CONTROL);
    332    g_assert_cmpuint(i2c_value, ==, 0);
    333
    334    adm1272_i2c_set16(i2cdev, ADM1272_MFR_PMON_CONFIG, 0xDEF0);
    335    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_PMON_CONFIG);
    336    g_assert_cmphex(i2c_value, ==, 0xDEF0);
    337
    338    adm1272_i2c_set16(i2cdev, ADM1272_MFR_ALERT1_CONFIG, 0x0123);
    339    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_ALERT1_CONFIG);
    340    g_assert_cmphex(i2c_value, ==, 0x0123);
    341
    342    adm1272_i2c_set16(i2cdev, ADM1272_MFR_ALERT2_CONFIG, 0x9876);
    343    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_ALERT2_CONFIG);
    344    g_assert_cmphex(i2c_value, ==, 0x9876);
    345
    346    adm1272_i2c_set16(i2cdev, ADM1272_MFR_DEVICE_CONFIG, 0x3456);
    347    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_MFR_DEVICE_CONFIG);
    348    g_assert_cmphex(i2c_value, ==, 0x3456);
    349
    350    adm1272_i2c_set16(i2cdev, ADM1272_HYSTERESIS_LOW, 0xCABA);
    351    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_HYSTERESIS_LOW);
    352    g_assert_cmphex(i2c_value, ==, 0xCABA);
    353
    354    adm1272_i2c_set16(i2cdev, ADM1272_HYSTERESIS_HIGH, 0x6789);
    355    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_HYSTERESIS_HIGH);
    356    g_assert_cmphex(i2c_value, ==, 0x6789);
    357
    358    adm1272_i2c_set16(i2cdev, ADM1272_STRT_UP_IOUT_LIM, 0x9876);
    359    i2c_value = adm1272_i2c_get16(i2cdev, ADM1272_STRT_UP_IOUT_LIM);
    360    g_assert_cmphex(i2c_value, ==, 0x9876);
    361
    362    adm1272_i2c_set16(i2cdev, PMBUS_OPERATION, 0xA);
    363    i2c_value = i2c_get8(i2cdev, PMBUS_OPERATION);
    364    g_assert_cmphex(i2c_value, ==, 0xA);
    365}
    366
    367/* test read-only registers */
    368static void test_ro_regs(void *obj, void *data, QGuestAllocator *alloc)
    369{
    370    uint16_t i2c_init_value, i2c_value;
    371    QI2CDevice *i2cdev = (QI2CDevice *)obj;
    372
    373    i2c_init_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VIN);
    374    adm1272_i2c_set16(i2cdev, PMBUS_READ_VIN, 0xBEEF);
    375    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VIN);
    376    g_assert_cmphex(i2c_init_value, ==, i2c_value);
    377
    378    i2c_init_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VOUT);
    379    adm1272_i2c_set16(i2cdev, PMBUS_READ_VOUT, 0x1234);
    380    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_VOUT);
    381    g_assert_cmphex(i2c_init_value, ==, i2c_value);
    382
    383    i2c_init_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_IOUT);
    384    adm1272_i2c_set16(i2cdev, PMBUS_READ_IOUT, 0x6547);
    385    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_IOUT);
    386    g_assert_cmphex(i2c_init_value, ==, i2c_value);
    387
    388    i2c_init_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
    389    adm1272_i2c_set16(i2cdev, PMBUS_READ_TEMPERATURE_1, 0x1597);
    390    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_TEMPERATURE_1);
    391    g_assert_cmphex(i2c_init_value, ==, i2c_value);
    392
    393    i2c_init_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_PIN);
    394    adm1272_i2c_set16(i2cdev, PMBUS_READ_PIN, 0xDEAD);
    395    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_READ_PIN);
    396    g_assert_cmphex(i2c_init_value, ==, i2c_value);
    397}
    398
    399/* test voltage fault handling */
    400static void test_voltage_faults(void *obj, void *data, QGuestAllocator *alloc)
    401{
    402    uint16_t i2c_value;
    403    uint8_t i2c_byte;
    404    QI2CDevice *i2cdev = (QI2CDevice *)obj;
    405
    406    adm1272_i2c_set16(i2cdev, PMBUS_VOUT_OV_WARN_LIMIT,
    407                      adm1272_millivolts_to_direct(5000));
    408    qmp_adm1272_set(TEST_ID, "vout", 5100);
    409
    410    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
    411    i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
    412    g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
    413    g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) != 0);
    414
    415    qmp_adm1272_set(TEST_ID, "vout", 4500);
    416    i2c_set8(i2cdev, PMBUS_CLEAR_FAULTS, 0);
    417    i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
    418    g_assert_true((i2c_byte & PB_STATUS_VOUT_OV_WARN) == 0);
    419
    420    adm1272_i2c_set16(i2cdev, PMBUS_VOUT_UV_WARN_LIMIT,
    421                      adm1272_millivolts_to_direct(4600));
    422    i2c_value = adm1272_i2c_get16(i2cdev, PMBUS_STATUS_WORD);
    423    i2c_byte = i2c_get8(i2cdev, PMBUS_STATUS_VOUT);
    424    g_assert_true((i2c_value & PB_STATUS_VOUT) != 0);
    425    g_assert_true((i2c_byte & PB_STATUS_VOUT_UV_WARN) != 0);
    426
    427}
    428
    429static void adm1272_register_nodes(void)
    430{
    431    QOSGraphEdgeOptions opts = {
    432        .extra_device_opts = "id=" TEST_ID ",address=0x10"
    433    };
    434    add_qi2c_address(&opts, &(QI2CAddress) { TEST_ADDR });
    435
    436    qos_node_create_driver("adm1272", i2c_device_create);
    437    qos_node_consumes("adm1272", "i2c-bus", &opts);
    438
    439    qos_add_test("test_defaults", "adm1272", test_defaults, NULL);
    440    qos_add_test("test_tx_rx", "adm1272", test_tx_rx, NULL);
    441    qos_add_test("test_rw_regs", "adm1272", test_rw_regs, NULL);
    442    qos_add_test("test_ro_regs", "adm1272", test_ro_regs, NULL);
    443    qos_add_test("test_ov_faults", "adm1272", test_voltage_faults, NULL);
    444}
    445libqos_init(adm1272_register_nodes);