root/drivers/gpu/drm/i915/gt/selftest_engine_cs.c

DEFINITIONS

1. intel_mmio_bases_check
2. intel_engine_cs_mock_selftests

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