[Intel-gfx] [PATCH 11/46] drm/i915: Mock a GGTT for self-testing
Chris Wilson
chris at chris-wilson.co.uk
Thu Feb 2 09:08:30 UTC 2017
A very simple mockery, just a random manager and timeline. Useful for
inserting objects and ordering retirement; and not much else.
v2: mock_fini_ggtt() to complement mock_init_ggtt().
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld at intel.com>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 4 +
drivers/gpu/drm/i915/selftests/mock_gem_device.c | 31 +++++
drivers/gpu/drm/i915/selftests/mock_gtt.c | 138 +++++++++++++++++++++++
drivers/gpu/drm/i915/selftests/mock_gtt.h | 35 ++++++
4 files changed, 208 insertions(+)
create mode 100644 drivers/gpu/drm/i915/selftests/mock_gtt.c
create mode 100644 drivers/gpu/drm/i915/selftests/mock_gtt.h
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 65425e71f3a5..afdb2859be05 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -3751,3 +3751,7 @@ int i915_gem_gtt_insert(struct i915_address_space *vm,
size, alignment, color,
start, end, DRM_MM_INSERT_EVICT);
}
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+#include "selftests/mock_gtt.c"
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 15d0a7ccc9d1..dbd32b125d15 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -26,6 +26,7 @@
#include "mock_gem_device.h"
#include "mock_gem_object.h"
+#include "mock_gtt.h"
static void mock_device_release(struct drm_device *dev)
{
@@ -33,6 +34,12 @@ static void mock_device_release(struct drm_device *dev)
i915_gem_drain_freed_objects(i915);
+ mutex_lock(&i915->drm.struct_mutex);
+ mock_fini_ggtt(i915);
+ i915_gem_timeline_fini(&i915->gt.global_timeline);
+ mutex_unlock(&i915->drm.struct_mutex);
+
+ kmem_cache_destroy(i915->vmas);
kmem_cache_destroy(i915->objects);
drm_dev_fini(&i915->drm);
@@ -84,19 +91,43 @@ struct drm_i915_private *mock_gem_device(void)
i915->drm.pdev = pdev;
i915->drm.dev_private = i915;
+ /* Using the global GTT may ask questions about KMS users, so prepare */
+ drm_mode_config_init(&i915->drm);
+
mkwrite_device_info(i915)->gen = -1;
spin_lock_init(&i915->mm.object_stat_lock);
INIT_WORK(&i915->mm.free_work, __i915_gem_free_work);
init_llist_head(&i915->mm.free_list);
+ INIT_LIST_HEAD(&i915->mm.unbound_list);
+ INIT_LIST_HEAD(&i915->mm.bound_list);
i915->objects = KMEM_CACHE(mock_object, SLAB_HWCACHE_ALIGN);
if (!i915->objects)
goto put_device;
+ i915->vmas = KMEM_CACHE(i915_vma, SLAB_HWCACHE_ALIGN);
+ if (!i915->vmas)
+ goto err_objects;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ INIT_LIST_HEAD(&i915->gt.timelines);
+ err = i915_gem_timeline_init__global(i915);
+ if (err) {
+ mutex_unlock(&i915->drm.struct_mutex);
+ goto err_vmas;
+ }
+
+ mock_init_ggtt(i915);
+ mutex_unlock(&i915->drm.struct_mutex);
+
return i915;
+err_vmas:
+ kmem_cache_destroy(i915->vmas);
+err_objects:
+ kmem_cache_destroy(i915->objects);
put_device:
put_device(&pdev->dev);
err:
diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.c b/drivers/gpu/drm/i915/selftests/mock_gtt.c
new file mode 100644
index 000000000000..a61309c7cb3e
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "mock_gtt.h"
+
+static void mock_insert_page(struct i915_address_space *vm,
+ dma_addr_t addr,
+ u64 offset,
+ enum i915_cache_level level,
+ u32 flags)
+{
+}
+
+static void mock_insert_entries(struct i915_address_space *vm,
+ struct sg_table *st,
+ u64 start,
+ enum i915_cache_level level, u32 flags)
+{
+}
+
+static int mock_bind_ppgtt(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
+{
+ GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
+ vma->pages = vma->obj->mm.pages;
+ vma->flags |= I915_VMA_LOCAL_BIND;
+ return 0;
+}
+
+static void mock_unbind_ppgtt(struct i915_vma *vma)
+{
+}
+
+static void mock_cleanup(struct i915_address_space *vm)
+{
+}
+
+struct i915_hw_ppgtt *
+mock_ppgtt(struct drm_i915_private *i915,
+ const char *name)
+{
+ struct i915_hw_ppgtt *ppgtt;
+
+ ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
+ if (!ppgtt)
+ return NULL;
+
+ kref_init(&ppgtt->ref);
+ ppgtt->base.i915 = i915;
+ ppgtt->base.total = round_down(U64_MAX, PAGE_SIZE);
+ ppgtt->base.file = ERR_PTR(-ENODEV);
+
+ INIT_LIST_HEAD(&ppgtt->base.active_list);
+ INIT_LIST_HEAD(&ppgtt->base.inactive_list);
+ INIT_LIST_HEAD(&ppgtt->base.unbound_list);
+
+ INIT_LIST_HEAD(&ppgtt->base.global_link);
+ drm_mm_init(&ppgtt->base.mm, 0, ppgtt->base.total);
+ i915_gem_timeline_init(i915, &ppgtt->base.timeline, name);
+
+ ppgtt->base.clear_range = nop_clear_range;
+ ppgtt->base.insert_page = mock_insert_page;
+ ppgtt->base.insert_entries = mock_insert_entries;
+ ppgtt->base.bind_vma = mock_bind_ppgtt;
+ ppgtt->base.unbind_vma = mock_unbind_ppgtt;
+ ppgtt->base.cleanup = mock_cleanup;
+
+ return ppgtt;
+}
+
+static int mock_bind_ggtt(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags)
+{
+ int err;
+
+ err = i915_get_ggtt_vma_pages(vma);
+ if (err)
+ return err;
+
+ vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
+ return 0;
+}
+
+static void mock_unbind_ggtt(struct i915_vma *vma)
+{
+}
+
+void mock_init_ggtt(struct drm_i915_private *i915)
+{
+ struct i915_ggtt *ggtt = &i915->ggtt;
+
+ INIT_LIST_HEAD(&i915->vm_list);
+
+ ggtt->base.i915 = i915;
+
+ ggtt->mappable_base = 0;
+ ggtt->mappable_end = 2048 * PAGE_SIZE;
+ ggtt->base.total = 4096 * PAGE_SIZE;
+
+ ggtt->base.clear_range = nop_clear_range;
+ ggtt->base.insert_page = mock_insert_page;
+ ggtt->base.insert_entries = mock_insert_entries;
+ ggtt->base.bind_vma = mock_bind_ggtt;
+ ggtt->base.unbind_vma = mock_unbind_ggtt;
+ ggtt->base.cleanup = mock_cleanup;
+
+ i915_address_space_init(&ggtt->base, i915, "global");
+}
+
+void mock_fini_ggtt(struct drm_i915_private *i915)
+{
+ struct i915_ggtt *ggtt = &i915->ggtt;
+
+ i915_address_space_fini(&ggtt->base);
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.h b/drivers/gpu/drm/i915/selftests/mock_gtt.h
new file mode 100644
index 000000000000..9a0a833bb545
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __MOCK_GTT_H
+#define __MOCK_GTT_H
+
+void mock_init_ggtt(struct drm_i915_private *i915);
+void mock_fini_ggtt(struct drm_i915_private *i915);
+
+struct i915_hw_ppgtt *
+mock_ppgtt(struct drm_i915_private *i915,
+ const char *name);
+
+#endif /* !__MOCK_GTT_H */
--
2.11.0
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