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/*
* 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"
typedef enum PnvChipType {
PNV_CHIP_POWER8E, /* AKA Murano (default) */
PNV_CHIP_POWER8, /* AKA Venice */
PNV_CHIP_POWER8NVL, /* AKA Naples */
PNV_CHIP_POWER9, /* AKA Nimbus */
} PnvChipType;
typedef struct PnvChip {
PnvChipType chip_type;
const char *cpu_model;
uint64_t xscom_base;
uint64_t cfam_id;
uint32_t first_core;
} PnvChip;
static const PnvChip pnv_chips[] = {
{
.chip_type = PNV_CHIP_POWER8,
.cpu_model = "POWER8",
.xscom_base = 0x0003fc0000000000ull,
.cfam_id = 0x220ea04980000000ull,
.first_core = 0x1,
}, {
.chip_type = PNV_CHIP_POWER8NVL,
.cpu_model = "POWER8NVL",
.xscom_base = 0x0003fc0000000000ull,
.cfam_id = 0x120d304980000000ull,
.first_core = 0x1,
},
#if 0 /* POWER9 support is not ready yet */
{
.chip_type = PNV_CHIP_POWER9,
.cpu_model = "POWER9",
.xscom_base = 0x000603fc00000000ull,
.cfam_id = 0x220d104900008000ull,
.first_core = 0x0,
},
#endif
};
static uint64_t pnv_xscom_addr(const PnvChip *chip, uint32_t pcba)
{
uint64_t addr = chip->xscom_base;
if (chip->chip_type == PNV_CHIP_POWER9) {
addr |= ((uint64_t) pcba << 3);
} else {
addr |= (((uint64_t) pcba << 4) & ~0xffull) |
(((uint64_t) pcba << 3) & 0x78);
}
return addr;
}
static uint64_t pnv_xscom_read(const PnvChip *chip, uint32_t pcba)
{
return readq(pnv_xscom_addr(chip, pcba));
}
static void test_xscom_cfam_id(const PnvChip *chip)
{
uint64_t f000f = pnv_xscom_read(chip, 0xf000f);
g_assert_cmphex(f000f, ==, chip->cfam_id);
}
static void test_cfam_id(const void *data)
{
const PnvChip *chip = data;
global_qtest = qtest_startf("-M powernv,accel=tcg -cpu %s",
chip->cpu_model);
test_xscom_cfam_id(chip);
qtest_quit(global_qtest);
}
#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_EX_DTS_RESULT0 0x50000
static void test_xscom_core(const PnvChip *chip)
{
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_EX_BASE(chip->first_core);
} else {
first_core_dts0 |= PNV_XSCOM_P9_EC_BASE(chip->first_core);
}
dts0 = pnv_xscom_read(chip, first_core_dts0);
g_assert_cmphex(dts0, ==, 0x26f024f023f0000ull);
}
static void test_core(const void *data)
{
const PnvChip *chip = data;
global_qtest = qtest_startf("-M powernv,accel=tcg -cpu %s",
chip->cpu_model);
test_xscom_core(chip);
qtest_quit(global_qtest);
}
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();
}
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