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 fw_ref, i; 47 u32 reg_val; 48 49 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); 50 KUNIT_ASSERT_NE_MSG(test, fw_ref, 0, "Forcewake Failed.\n"); 51 52 for (i = 0; i < info->num_mocs_regs; i++) { 53 if (!(i & 1)) { 54 if (regs_are_mcr(gt)) 55 reg_val = xe_gt_mcr_unicast_read_any(gt, XEHP_LNCFCMOCS(i >> 1)); 56 else 57 reg_val = xe_mmio_read32(>->mmio, XELP_LNCFCMOCS(i >> 1)); 58 59 mocs_dbg(gt, "reg_val=0x%x\n", reg_val); 60 } else { 61 /* Just re-use value read on previous iteration */ 62 reg_val >>= 16; 63 } 64 65 l3cc_expected = get_entry_l3cc(info, i); 66 l3cc = reg_val & 0xffff; 67 68 mocs_dbg(gt, "[%u] expected=0x%x actual=0x%x\n", 69 i, l3cc_expected, l3cc); 70 71 KUNIT_EXPECT_EQ_MSG(test, l3cc_expected, l3cc, 72 "l3cc idx=%u has incorrect val.\n", i); 73 } 74 xe_force_wake_put(gt_to_fw(gt), fw_ref); 75 } 76 77 static void read_mocs_table(struct xe_gt *gt, 78 const struct xe_mocs_info *info) 79 { 80 struct kunit *test = kunit_get_current_test(); 81 u32 mocs, mocs_expected; 82 unsigned int fw_ref, i; 83 u32 reg_val; 84 85 KUNIT_EXPECT_TRUE_MSG(test, info->unused_entries_index, 86 "Unused entries index should have been defined\n"); 87 88 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); 89 KUNIT_ASSERT_NE_MSG(test, fw_ref, 0, "Forcewake Failed.\n"); 90 91 for (i = 0; i < info->num_mocs_regs; i++) { 92 if (regs_are_mcr(gt)) 93 reg_val = xe_gt_mcr_unicast_read_any(gt, XEHP_GLOBAL_MOCS(i)); 94 else 95 reg_val = xe_mmio_read32(>->mmio, XELP_GLOBAL_MOCS(i)); 96 97 mocs_expected = get_entry_control(info, i); 98 mocs = reg_val; 99 100 mocs_dbg(gt, "[%u] expected=0x%x actual=0x%x\n", 101 i, mocs_expected, mocs); 102 103 KUNIT_EXPECT_EQ_MSG(test, mocs_expected, mocs, 104 "mocs reg 0x%x has incorrect val.\n", i); 105 } 106 107 xe_force_wake_put(gt_to_fw(gt), fw_ref); 108 } 109 110 static int mocs_kernel_test_run_device(struct xe_device *xe) 111 { 112 /* Basic check the system is configured with the expected mocs table */ 113 114 struct live_mocs mocs; 115 struct xe_gt *gt; 116 117 unsigned int flags; 118 int id; 119 120 xe_pm_runtime_get(xe); 121 122 for_each_gt(gt, xe, id) { 123 flags = live_mocs_init(&mocs, gt); 124 if (flags & HAS_GLOBAL_MOCS) 125 read_mocs_table(gt, &mocs.table); 126 if (flags & HAS_LNCF_MOCS) 127 read_l3cc_table(gt, &mocs.table); 128 } 129 130 xe_pm_runtime_put(xe); 131 132 return 0; 133 } 134 135 static void xe_live_mocs_kernel_kunit(struct kunit *test) 136 { 137 struct xe_device *xe = test->priv; 138 139 if (IS_SRIOV_VF(xe)) 140 kunit_skip(test, "this test is N/A for VF"); 141 142 mocs_kernel_test_run_device(xe); 143 } 144 145 static int mocs_reset_test_run_device(struct xe_device *xe) 146 { 147 /* Check the mocs setup is retained over GT reset */ 148 149 struct live_mocs mocs; 150 struct xe_gt *gt; 151 unsigned int flags; 152 int id; 153 struct kunit *test = kunit_get_current_test(); 154 155 xe_pm_runtime_get(xe); 156 157 for_each_gt(gt, xe, id) { 158 flags = live_mocs_init(&mocs, gt); 159 kunit_info(test, "mocs_reset_test before reset\n"); 160 if (flags & HAS_GLOBAL_MOCS) 161 read_mocs_table(gt, &mocs.table); 162 if (flags & HAS_LNCF_MOCS) 163 read_l3cc_table(gt, &mocs.table); 164 165 xe_gt_reset_async(gt); 166 flush_work(>->reset.worker); 167 168 kunit_info(test, "mocs_reset_test after reset\n"); 169 if (flags & HAS_GLOBAL_MOCS) 170 read_mocs_table(gt, &mocs.table); 171 if (flags & HAS_LNCF_MOCS) 172 read_l3cc_table(gt, &mocs.table); 173 } 174 175 xe_pm_runtime_put(xe); 176 177 return 0; 178 } 179 180 static void xe_live_mocs_reset_kunit(struct kunit *test) 181 { 182 struct xe_device *xe = test->priv; 183 184 if (IS_SRIOV_VF(xe)) 185 kunit_skip(test, "this test is N/A for VF"); 186 187 mocs_reset_test_run_device(xe); 188 } 189 190 static struct kunit_case xe_mocs_tests[] = { 191 KUNIT_CASE_PARAM(xe_live_mocs_kernel_kunit, xe_pci_live_device_gen_param), 192 KUNIT_CASE_PARAM(xe_live_mocs_reset_kunit, xe_pci_live_device_gen_param), 193 {} 194 }; 195 196 VISIBLE_IF_KUNIT 197 struct kunit_suite xe_mocs_test_suite = { 198 .name = "xe_mocs", 199 .test_cases = xe_mocs_tests, 200 .init = xe_kunit_helper_xe_device_live_test_init, 201 }; 202 EXPORT_SYMBOL_IF_KUNIT(xe_mocs_test_suite); 203