Check that the entries are in reverse gen order and that all entries
with gen > 0 have an mmio base set.
v2: loop forward, simplify logic, use i915_subtests (Chris)
Suggested-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_engine_cs.c | 16 +++---
.../gpu/drm/i915/selftests/i915_mock_selftests.h | 1 +
drivers/gpu/drm/i915/selftests/intel_engine_cs.c | 58 ++++++++++++++++++++++
3 files changed, 69 insertions(+), 6 deletions(-)
create mode 100644 drivers/gpu/drm/i915/selftests/intel_engine_cs.c
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 51339eb193c6..28031bdba79b 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -263,16 +263,21 @@ static u32 __engine_mmio_base(struct drm_i915_private *i915,
return bases[i].base;
}
+static void __sprint_engine_name(char *name, const struct engine_info *info)
+{
+ WARN_ON(snprintf(name, INTEL_ENGINE_CS_MAX_NAME, "%s%u",
+ intel_engine_classes[info->class].name, info->instance) >=
+ INTEL_ENGINE_CS_MAX_NAME);
+}
+
static int
intel_engine_setup(struct drm_i915_private *dev_priv,
enum intel_engine_id id)
{
const struct engine_info *info = &intel_engines[id];
- const struct engine_class_info *class_info;
struct intel_engine_cs *engine;
GEM_BUG_ON(info->class >= ARRAY_SIZE(intel_engine_classes));
- class_info = &intel_engine_classes[info->class];
BUILD_BUG_ON(MAX_ENGINE_CLASS >= BIT(GEN11_ENGINE_CLASS_WIDTH));
BUILD_BUG_ON(MAX_ENGINE_INSTANCE >= BIT(GEN11_ENGINE_INSTANCE_WIDTH));
@@ -293,9 +298,7 @@ intel_engine_setup(struct drm_i915_private *dev_priv,
engine->id = id;
engine->i915 = dev_priv;
- WARN_ON(snprintf(engine->name, sizeof(engine->name), "%s%u",
- class_info->name, info->instance) >=
- sizeof(engine->name));
+ __sprint_engine_name(engine->name, info);
engine->hw_id = engine->guc_id = info->hw_id;
engine->mmio_base = __engine_mmio_base(dev_priv, info->mmio_bases);
engine->irq_shift = info->irq_shift;
@@ -303,7 +306,7 @@ intel_engine_setup(struct drm_i915_private *dev_priv,
engine->instance = info->instance;
engine->uabi_id = info->uabi_id;
- engine->uabi_class = class_info->uabi_class;
+ engine->uabi_class = intel_engine_classes[info->class].uabi_class;
engine->context_size = __intel_engine_context_size(dev_priv,
engine->class);
@@ -2138,4 +2141,5 @@ void intel_disable_engine_stats(struct intel_engine_cs *engine)
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_engine.c"
+#include "selftests/intel_engine_cs.c"
#endif
diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
index 9a48aa441743..d16d74178e9d 100644
--- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -14,6 +14,7 @@ selftest(fence, i915_sw_fence_mock_selftests)
selftest(scatterlist, scatterlist_mock_selftests)
selftest(syncmap, i915_syncmap_mock_selftests)
selftest(uncore, intel_uncore_mock_selftests)
+selftest(engine, intel_engine_cs_mock_selftests)
selftest(breadcrumbs, intel_breadcrumbs_mock_selftests)
selftest(timelines, i915_gem_timeline_mock_selftests)
selftest(requests, i915_request_mock_selftests)
diff --git a/drivers/gpu/drm/i915/selftests/intel_engine_cs.c b/drivers/gpu/drm/i915/selftests/intel_engine_cs.c
new file mode 100644
index 000000000000..cfaa6b296835
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_engine_cs.c
@@ -0,0 +1,58 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "../i915_selftest.h"
+
+static int intel_mmio_bases_check(void *arg)
+{
+ int i, j;
+
+ for (i = 0; i < ARRAY_SIZE(intel_engines); i++) {
+ const struct engine_info *info = &intel_engines[i];
+ char name[INTEL_ENGINE_CS_MAX_NAME];
+ u8 prev = U8_MAX;
+
+ __sprint_engine_name(name, info);
+
+ for (j = 0; j < MAX_MMIO_BASES; j++) {
+ u8 gen = info->mmio_bases[j].gen;
+ u32 base = info->mmio_bases[j].base;
+
+ if (gen >= prev) {
+ pr_err("%s: %s: mmio base for gen %x "
+ "is before the one for gen %x\n",
+ __func__, name, prev, gen);
+ return -EINVAL;
+ }
+
+ if (gen == 0)
+ break;
+
+ if (!base) {
+ pr_err("%s: %s: invalid mmio base (%x) "
+ "for gen %x at entry %u\n",
+ __func__, name, base, gen, j);
+ return -EINVAL;
+ }
+
+ prev = gen;
+ }
+
+ pr_info("%s: min gen supported for %s = %d\n",
+ __func__, name, prev);
+ }
+
+ return 0;
+}
+
+int intel_engine_cs_mock_selftests(void)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(intel_mmio_bases_check),
+ };
+
+ return i915_subtests(tests, NULL);
+}
--
2.16.2
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