1/*
 2 * SPDX-License-Identifier: GPL-2.0
 3 *
 4 * Copyright © 2018 Intel Corporation
 5 */
 6
 7#include "../i915_selftest.h"
 8
 9static 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
55int 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}