1 // SPDX-License-Identifier: GPL-2.0 AND MIT 2 /* 3 * Copyright © 2022 Intel Corporation 4 */ 5 6 #include <kunit/test.h> 7 #include <kunit/visibility.h> 8 9 #include "tests/xe_kunit_helpers.h" 10 #include "tests/xe_pci_test.h" 11 #include "tests/xe_test.h" 12 13 #include "xe_device.h" 14 #include "xe_gt.h" 15 #include "xe_mocs.h" 16 #include "xe_pci.h" 17 #include "xe_pm.h" 18 19 struct live_mocs { 20 struct xe_mocs_info table; 21 }; 22 23 static int live_mocs_init(struct live_mocs *arg, struct xe_gt *gt) 24 { 25 unsigned int flags; 26 struct kunit *test = kunit_get_current_test(); 27 28 memset(arg, 0, sizeof(*arg)); 29 30 flags = get_mocs_settings(gt_to_xe(gt), &arg->table); 31 32 kunit_info(test, "gt %d", gt->info.id); 33 kunit_info(test, "gt type %d", gt->info.type); 34 kunit_info(test, "table size %d", arg->table.table_size); 35 kunit_info(test, "table uc_index %d", arg->table.uc_index); 36 kunit_info(test, "table num_mocs_regs %d", arg->table.num_mocs_regs); 37 38 return flags; 39 } 40 41 static void read_l3cc_table(struct xe_gt *gt, 42 const struct xe_mocs_info *info) 43 { 44 struct kunit *test = kunit_get_current_test(); 45 u32 l3cc, l3cc_expected; 46 unsigned int i; 47 u32 reg_val; 48 u32 ret; 49 50 ret = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); 51 KUNIT_ASSERT_EQ_MSG(test, ret, 0, "Forcewake Failed.\n"); 52 53 for (i = 0; i < info->num_mocs_regs; i++) { 54 if (!(i & 1)) { 55 if (regs_are_mcr(gt)) 56 reg_val = xe_gt_mcr_unicast_read_any(gt, XEHP_LNCFCMOCS(i >> 1)); 57 else 58 reg_val = xe_mmio_read32(gt, XELP_LNCFCMOCS(i >> 1)); 59 60 mocs_dbg(gt, "reg_val=0x%x\n", reg_val); 61 } else { 62 /* Just re-use value read on previous iteration */ 63 reg_val >>= 16; 64 } 65 66 l3cc_expected = get_entry_l3cc(info, i); 67 l3cc = reg_val & 0xffff; 68 69 mocs_dbg(gt, "[%u] expected=0x%x actual=0x%x\n", 70 i, l3cc_expected, l3cc); 71 72 KUNIT_EXPECT_EQ_MSG(test, l3cc_expected, l3cc, 73 "l3cc idx=%u has incorrect val.\n", i); 74 } 75 xe_force_wake_put(gt_to_fw(gt), XE_FW_GT); 76 } 77 78 static void read_mocs_table(struct xe_gt *gt, 79 const struct xe_mocs_info *info) 80 { 81 struct kunit *test = kunit_get_current_test(); 82 u32 mocs, mocs_expected; 83 unsigned int i; 84 u32 reg_val; 85 u32 ret; 86 87 KUNIT_EXPECT_TRUE_MSG(test, info->unused_entries_index, 88 "Unused entries index should have been defined\n"); 89 90 ret = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); 91 KUNIT_ASSERT_EQ_MSG(test, ret, 0, "Forcewake Failed.\n"); 92 93 for (i = 0; i < info->num_mocs_regs; i++) { 94 if (regs_are_mcr(gt)) 95 reg_val = xe_gt_mcr_unicast_read_any(gt, XEHP_GLOBAL_MOCS(i)); 96 else 97 reg_val = xe_mmio_read32(gt, XELP_GLOBAL_MOCS(i)); 98 99 mocs_expected = get_entry_control(info, i); 100 mocs = reg_val; 101 102 mocs_dbg(gt, "[%u] expected=0x%x actual=0x%x\n", 103 i, mocs_expected, mocs); 104 105 KUNIT_EXPECT_EQ_MSG(test, mocs_expected, mocs, 106 "mocs reg 0x%x has incorrect val.\n", i); 107 } 108 109 xe_force_wake_put(gt_to_fw(gt), XE_FW_GT); 110 } 111 112 static int mocs_kernel_test_run_device(struct xe_device *xe) 113 { 114 /* Basic check the system is configured with the expected mocs table */ 115 116 struct live_mocs mocs; 117 struct xe_gt *gt; 118 119 unsigned int flags; 120 int id; 121 122 xe_pm_runtime_get(xe); 123 124 for_each_gt(gt, xe, id) { 125 flags = live_mocs_init(&mocs, gt); 126 if (flags & HAS_GLOBAL_MOCS) 127 read_mocs_table(gt, &mocs.table); 128 if (flags & HAS_LNCF_MOCS) 129 read_l3cc_table(gt, &mocs.table); 130 } 131 132 xe_pm_runtime_put(xe); 133 134 return 0; 135 } 136 137 static void xe_live_mocs_kernel_kunit(struct kunit *test) 138 { 139 struct xe_device *xe = test->priv; 140 141 if (IS_SRIOV_VF(xe)) 142 kunit_skip(test, "this test is N/A for VF"); 143 144 mocs_kernel_test_run_device(xe); 145 } 146 147 static int mocs_reset_test_run_device(struct xe_device *xe) 148 { 149 /* Check the mocs setup is retained over GT reset */ 150 151 struct live_mocs mocs; 152 struct xe_gt *gt; 153 unsigned int flags; 154 int id; 155 struct kunit *test = kunit_get_current_test(); 156 157 xe_pm_runtime_get(xe); 158 159 for_each_gt(gt, xe, id) { 160 flags = live_mocs_init(&mocs, gt); 161 kunit_info(test, "mocs_reset_test before reset\n"); 162 if (flags & HAS_GLOBAL_MOCS) 163 read_mocs_table(gt, &mocs.table); 164 if (flags & HAS_LNCF_MOCS) 165 read_l3cc_table(gt, &mocs.table); 166 167 xe_gt_reset_async(gt); 168 flush_work(>->reset.worker); 169 170 kunit_info(test, "mocs_reset_test after reset\n"); 171 if (flags & HAS_GLOBAL_MOCS) 172 read_mocs_table(gt, &mocs.table); 173 if (flags & HAS_LNCF_MOCS) 174 read_l3cc_table(gt, &mocs.table); 175 } 176 177 xe_pm_runtime_put(xe); 178 179 return 0; 180 } 181 182 static void xe_live_mocs_reset_kunit(struct kunit *test) 183 { 184 struct xe_device *xe = test->priv; 185 186 if (IS_SRIOV_VF(xe)) 187 kunit_skip(test, "this test is N/A for VF"); 188 189 mocs_reset_test_run_device(xe); 190 } 191 192 static struct kunit_case xe_mocs_tests[] = { 193 KUNIT_CASE_PARAM(xe_live_mocs_kernel_kunit, xe_pci_live_device_gen_param), 194 KUNIT_CASE_PARAM(xe_live_mocs_reset_kunit, xe_pci_live_device_gen_param), 195 {} 196 }; 197 198 VISIBLE_IF_KUNIT 199 struct kunit_suite xe_mocs_test_suite = { 200 .name = "xe_mocs", 201 .test_cases = xe_mocs_tests, 202 .init = xe_kunit_helper_xe_device_live_test_init, 203 }; 204 EXPORT_SYMBOL_IF_KUNIT(xe_mocs_test_suite); 205