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 u8 prev = U8_MAX;
16
17 for (j = 0; j < MAX_MMIO_BASES; j++) {
18 u8 gen = info->mmio_bases[j].gen;
19 u32 base = info->mmio_bases[j].base;
20
21 if (gen >= prev) {
22 pr_err("%s(%s, class:%d, instance:%d): mmio base for gen %x is before the one for gen %x\n",
23 __func__,
24 intel_engine_class_repr(info->class),
25 info->class, info->instance,
26 prev, gen);
27 return -EINVAL;
28 }
29
30 if (gen == 0)
31 break;
32
33 if (!base) {
34 pr_err("%s(%s, class:%d, instance:%d): invalid mmio base (%x) for gen %x at entry %u\n",
35 __func__,
36 intel_engine_class_repr(info->class),
37 info->class, info->instance,
38 base, gen, j);
39 return -EINVAL;
40 }
41
42 prev = gen;
43 }
44
45 pr_debug("%s: min gen supported for %s%d is %d\n",
46 __func__,
47 intel_engine_class_repr(info->class),
48 info->instance,
49 prev);
50 }
51
52 return 0;
53 }
54
intel_engine_cs_mock_selftests(void)55 int intel_engine_cs_mock_selftests(void)
56 {
57 static const struct i915_subtest tests[] = {
58 SUBTEST(intel_mmio_bases_check),
59 };
60
61 return i915_subtests(tests, NULL);
62 }
63
