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
live_mocs_init(struct live_mocs * arg,struct xe_gt * gt)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
read_l3cc_table(struct xe_gt * gt,const struct xe_mocs_info * info)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
read_mocs_table(struct xe_gt * gt,const struct xe_mocs_info * info)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
mocs_kernel_test_run_device(struct xe_device * xe)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
xe_live_mocs_kernel_kunit(struct kunit * test)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
mocs_reset_test_run_device(struct xe_device * xe)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
xe_live_mocs_reset_kunit(struct kunit * test)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