Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.h b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h
new file mode 100644
index 0000000000..67347e62e2
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+#ifndef _I915_GEM_TTM_H_
+#define _I915_GEM_TTM_H_
+
+#include <drm/ttm/ttm_placement.h>
+
+#include "gem/i915_gem_object_types.h"
+
+/**
+ * i915_gem_to_ttm - Convert a struct drm_i915_gem_object to a
+ * struct ttm_buffer_object.
+ * @obj: Pointer to the gem object.
+ *
+ * Return: Pointer to the embedded struct ttm_buffer_object.
+ */
+static inline struct ttm_buffer_object *
+i915_gem_to_ttm(struct drm_i915_gem_object *obj)
+{
+	return &obj->__do_not_access;
+}
+
+/*
+ * i915 ttm gem object destructor. Internal use only.
+ */
+void i915_ttm_bo_destroy(struct ttm_buffer_object *bo);
+
+/**
+ * i915_ttm_is_ghost_object - Check if the ttm bo is a ghost object.
+ * @bo: Pointer to the ttm buffer object
+ *
+ * Return: True if the ttm bo is not a i915 object but a ghost ttm object,
+ * False otherwise.
+ */
+static inline bool i915_ttm_is_ghost_object(struct ttm_buffer_object *bo)
+{
+	return bo->destroy != i915_ttm_bo_destroy;
+}
+
+/**
+ * i915_ttm_to_gem - Convert a struct ttm_buffer_object to an embedding
+ * struct drm_i915_gem_object.
+ * @bo: Pointer to the ttm buffer object
+ *
+ * Return: Pointer to the embedding struct drm_i915_gem_object.
+ */
+static inline struct drm_i915_gem_object *
+i915_ttm_to_gem(struct ttm_buffer_object *bo)
+{
+	return container_of(bo, struct drm_i915_gem_object, __do_not_access);
+}
+
+int __i915_gem_ttm_object_init(struct intel_memory_region *mem,
+			       struct drm_i915_gem_object *obj,
+			       resource_size_t offset,
+			       resource_size_t size,
+			       resource_size_t page_size,
+			       unsigned int flags);
+
+/* Internal I915 TTM declarations and definitions below. */
+
+#define I915_PL_LMEM0 TTM_PL_PRIV
+#define I915_PL_SYSTEM TTM_PL_SYSTEM
+#define I915_PL_STOLEN TTM_PL_VRAM
+#define I915_PL_GGTT TTM_PL_TT
+
+struct ttm_placement *i915_ttm_sys_placement(void);
+
+void i915_ttm_free_cached_io_rsgt(struct drm_i915_gem_object *obj);
+
+struct i915_refct_sgt *
+i915_ttm_resource_get_st(struct drm_i915_gem_object *obj,
+			 struct ttm_resource *res);
+
+void i915_ttm_adjust_lru(struct drm_i915_gem_object *obj);
+
+int i915_ttm_purge(struct drm_i915_gem_object *obj);
+
+/**
+ * i915_ttm_gtt_binds_lmem - Should the memory be viewed as LMEM by the GTT?
+ * @mem: struct ttm_resource representing the memory.
+ *
+ * Return: true if memory should be viewed as LMEM for GTT binding purposes,
+ * false otherwise.
+ */
+static inline bool i915_ttm_gtt_binds_lmem(struct ttm_resource *mem)
+{
+	return mem->mem_type != I915_PL_SYSTEM;
+}
+
+/**
+ * i915_ttm_cpu_maps_iomem - Should the memory be viewed as IOMEM by the CPU?
+ * @mem: struct ttm_resource representing the memory.
+ *
+ * Return: true if memory should be viewed as IOMEM for CPU mapping purposes.
+ */
+static inline bool i915_ttm_cpu_maps_iomem(struct ttm_resource *mem)
+{
+	/* Once / if we support GGTT, this is also false for cached ttm_tts */
+	return mem && mem->mem_type != I915_PL_SYSTEM;
+}
+
+bool i915_ttm_resource_mappable(struct ttm_resource *res);
+
+#endif