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