1 /*
2 * SPDX-License-Identifier: GPL-2.0
3 *
4 * Copyright © 2018 Intel Corporation
5 */
6
7 #include "../i915_selftest.h"
8
intel_mmio_bases_check(void * arg)9 static int intel_mmio_bases_check(void *arg)
10 {
11 int i, j;
12
13 for (i = 0; i < ARRAY_SIZE(intel_engines); i++) {
14 const struct engine_info *info = &intel_engines[i];
15 char name[INTEL_ENGINE_CS_MAX_NAME];
16 u8 prev = U8_MAX;
17
18 __sprint_engine_name(name, info);
19
20 for (j = 0; j < MAX_MMIO_BASES; j++) {
21 u8 gen = info->mmio_bases[j].gen;
22 u32 base = info->mmio_bases[j].base;
23
24 if (gen >= prev) {
25 pr_err("%s: %s: mmio base for gen %x "
26 "is before the one for gen %x\n",
27 __func__, name, prev, gen);
28 return -EINVAL;
29 }
30
31 if (gen == 0)
32 break;
33
34 if (!base) {
35 pr_err("%s: %s: invalid mmio base (%x) "
36 "for gen %x at entry %u\n",
37 __func__, name, base, gen, j);
38 return -EINVAL;
39 }
40
41 prev = gen;
42 }
43
44 pr_info("%s: min gen supported for %s = %d\n",
45 __func__, name, prev);
46 }
47
48 return 0;
49 }
50
intel_engine_cs_mock_selftests(void)51 int intel_engine_cs_mock_selftests(void)
52 {
53 static const struct i915_subtest tests[] = {
54 SUBTEST(intel_mmio_bases_check),
55 };
56
57 return i915_subtests(tests, NULL);
58 }
59