1 /* 2 * QTest testcase for PowerNV XSCOM bus 3 * 4 * Copyright (c) 2016, IBM Corporation. 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or 7 * later. See the COPYING file in the top-level directory. 8 */ 9 #include "qemu/osdep.h" 10 11 #include "libqtest.h" 12 13 typedef enum PnvChipType { 14 PNV_CHIP_POWER8E, /* AKA Murano (default) */ 15 PNV_CHIP_POWER8, /* AKA Venice */ 16 PNV_CHIP_POWER8NVL, /* AKA Naples */ 17 PNV_CHIP_POWER9, /* AKA Nimbus */ 18 } PnvChipType; 19 20 typedef struct PnvChip { 21 PnvChipType chip_type; 22 const char *cpu_model; 23 uint64_t xscom_base; 24 uint64_t cfam_id; 25 uint32_t first_core; 26 } PnvChip; 27 28 static const PnvChip pnv_chips[] = { 29 { 30 .chip_type = PNV_CHIP_POWER8, 31 .cpu_model = "POWER8", 32 .xscom_base = 0x0003fc0000000000ull, 33 .cfam_id = 0x220ea04980000000ull, 34 .first_core = 0x1, 35 }, { 36 .chip_type = PNV_CHIP_POWER8NVL, 37 .cpu_model = "POWER8NVL", 38 .xscom_base = 0x0003fc0000000000ull, 39 .cfam_id = 0x120d304980000000ull, 40 .first_core = 0x1, 41 }, 42 { 43 .chip_type = PNV_CHIP_POWER9, 44 .cpu_model = "POWER9", 45 .xscom_base = 0x000603fc00000000ull, 46 .cfam_id = 0x220d104900008000ull, 47 .first_core = 0x0, 48 }, 49 }; 50 51 static uint64_t pnv_xscom_addr(const PnvChip *chip, uint32_t pcba) 52 { 53 uint64_t addr = chip->xscom_base; 54 55 if (chip->chip_type == PNV_CHIP_POWER9) { 56 addr |= ((uint64_t) pcba << 3); 57 } else { 58 addr |= (((uint64_t) pcba << 4) & ~0xffull) | 59 (((uint64_t) pcba << 3) & 0x78); 60 } 61 return addr; 62 } 63 64 static uint64_t pnv_xscom_read(QTestState *qts, const PnvChip *chip, 65 uint32_t pcba) 66 { 67 return qtest_readq(qts, pnv_xscom_addr(chip, pcba)); 68 } 69 70 static void test_xscom_cfam_id(QTestState *qts, const PnvChip *chip) 71 { 72 uint64_t f000f = pnv_xscom_read(qts, chip, 0xf000f); 73 74 g_assert_cmphex(f000f, ==, chip->cfam_id); 75 } 76 77 static void test_cfam_id(const void *data) 78 { 79 const PnvChip *chip = data; 80 const char *machine = "powernv8"; 81 QTestState *qts; 82 83 if (chip->chip_type == PNV_CHIP_POWER9) { 84 machine = "powernv9"; 85 } 86 87 qts = qtest_initf("-M %s -accel tcg -cpu %s", 88 machine, chip->cpu_model); 89 test_xscom_cfam_id(qts, chip); 90 qtest_quit(qts); 91 } 92 93 94 #define PNV_XSCOM_EX_CORE_BASE 0x10000000ull 95 #define PNV_XSCOM_EX_BASE(core) \ 96 (PNV_XSCOM_EX_CORE_BASE | ((uint64_t)(core) << 24)) 97 #define PNV_XSCOM_P9_EC_BASE(core) \ 98 ((uint64_t)(((core) & 0x1F) + 0x20) << 24) 99 100 #define PNV_XSCOM_EX_DTS_RESULT0 0x50000 101 102 static void test_xscom_core(QTestState *qts, const PnvChip *chip) 103 { 104 uint32_t first_core_dts0 = PNV_XSCOM_EX_DTS_RESULT0; 105 uint64_t dts0; 106 107 if (chip->chip_type != PNV_CHIP_POWER9) { 108 first_core_dts0 |= PNV_XSCOM_EX_BASE(chip->first_core); 109 } else { 110 first_core_dts0 |= PNV_XSCOM_P9_EC_BASE(chip->first_core); 111 } 112 113 dts0 = pnv_xscom_read(qts, chip, first_core_dts0); 114 115 g_assert_cmphex(dts0, ==, 0x26f024f023f0000ull); 116 } 117 118 static void test_core(const void *data) 119 { 120 const PnvChip *chip = data; 121 QTestState *qts; 122 const char *machine = "powernv8"; 123 124 if (chip->chip_type == PNV_CHIP_POWER9) { 125 machine = "powernv9"; 126 } 127 128 qts = qtest_initf("-M %s -accel tcg -cpu %s", 129 machine, chip->cpu_model); 130 test_xscom_core(qts, chip); 131 qtest_quit(qts); 132 } 133 134 static void add_test(const char *name, void (*test)(const void *data)) 135 { 136 int i; 137 138 for (i = 0; i < ARRAY_SIZE(pnv_chips); i++) { 139 char *tname = g_strdup_printf("pnv-xscom/%s/%s", name, 140 pnv_chips[i].cpu_model); 141 qtest_add_data_func(tname, &pnv_chips[i], test); 142 g_free(tname); 143 } 144 } 145 146 int main(int argc, char **argv) 147 { 148 g_test_init(&argc, &argv, NULL); 149 150 add_test("cfam_id", test_cfam_id); 151 add_test("core", test_core); 152 return g_test_run(); 153 } 154