qemu/tests/qtest/pnv-xscom-test.c

/*
 * QTest testcase for PowerNV XSCOM bus
 *
 * Copyright (c) 2016, IBM Corporation.
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or
 * later. See the COPYING file in the top-level directory.
 */
#include "qemu/osdep.h"

#include "libqtest.h"

#include "pnv-xscom.h"

static uint64_t pnv_xscom_read(QTestState *qts, const PnvChip *chip,
                               uint32_t pcba)
{
    return qtest_readq(qts, pnv_xscom_addr(chip, pcba));
}

static void test_xscom_cfam_id(QTestState *qts, const PnvChip *chip)
{
    uint64_t f000f = pnv_xscom_read(qts, chip, 0xf000f);

    g_assert_cmphex(f000f, ==, chip->cfam_id);
}

static void test_cfam_id(const void *data)
{
    const PnvChip *chip = data;
    const char *machine = "powernv8";
    QTestState *qts;

    if (chip->chip_type == PNV_CHIP_POWER9) {
        machine = "powernv9";
    } else if (chip->chip_type == PNV_CHIP_POWER10) {
        machine = "powernv10";
    }

    qts = qtest_initf("-M %s -accel tcg -cpu %s",
                      machine, chip->cpu_model);
    test_xscom_cfam_id(qts, chip);
    qtest_quit(qts);
}


#define PNV_XSCOM_EX_CORE_BASE    0x10000000ull
#define PNV_XSCOM_EX_BASE(core) \
    (PNV_XSCOM_EX_CORE_BASE | ((uint64_t)(core) << 24))
#define PNV_XSCOM_P9_EC_BASE(core) \
    ((uint64_t)(((core) & 0x1F) + 0x20) << 24)
#define PNV_XSCOM_P10_EC_BASE(core) \
    ((uint64_t)((((core) & ~0x3) + 0x20) << 24) + 0x20000 + \
     (0x1000 << (3 - (core & 0x3))))

#define PNV_XSCOM_EX_DTS_RESULT0     0x50000

static void test_xscom_core(QTestState *qts, const PnvChip *chip)
{
    if (chip->chip_type == PNV_CHIP_POWER10) {
        uint32_t first_core_thread_state =
                 PNV_XSCOM_P10_EC_BASE(chip->first_core) + 0x412;
        uint64_t thread_state;

        thread_state = pnv_xscom_read(qts, chip, first_core_thread_state);

        g_assert_cmphex(thread_state, ==, 0);
    } else {
        uint32_t first_core_dts0 = PNV_XSCOM_EX_DTS_RESULT0;
        uint64_t dts0;

        if (chip->chip_type == PNV_CHIP_POWER9) {
            first_core_dts0 |= PNV_XSCOM_P9_EC_BASE(chip->first_core);
        } else { /* POWER8 */
            first_core_dts0 |= PNV_XSCOM_EX_BASE(chip->first_core);
        }

        dts0 = pnv_xscom_read(qts, chip, first_core_dts0);

        g_assert_cmphex(dts0, ==, 0x26f024f023f0000ull);
    }
}

static void test_core(const void *data)
{
    const PnvChip *chip = data;
    QTestState *qts;
    const char *machine = "powernv8";

    if (chip->chip_type == PNV_CHIP_POWER9) {
        machine = "powernv9";
    } else if (chip->chip_type == PNV_CHIP_POWER10) {
        machine = "powernv10";
    }

    qts = qtest_initf("-M %s -accel tcg -cpu %s",
                      machine, chip->cpu_model);
    test_xscom_core(qts, chip);
    qtest_quit(qts);
}

static void add_test(const char *name, void (*test)(const void *data))
{
    int i;

    for (i = 0; i < ARRAY_SIZE(pnv_chips); i++) {
        char *tname = g_strdup_printf("pnv-xscom/%s/%s", name,
                                      pnv_chips[i].cpu_model);
        qtest_add_data_func(tname, &pnv_chips[i], test);
        g_free(tname);
    }
}

int main(int argc, char **argv)
{
    g_test_init(&argc, &argv, NULL);

    add_test("cfam_id", test_cfam_id);
    add_test("core", test_core);
    return g_test_run();
}