| 1 | /* SPDX-License-Identifier: MIT */ |
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| 2 | /* |
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| 3 | * Copyright © 2019 Intel Corporation |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __I915_GEM_REGION_H__ |
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| 7 | #define __I915_GEM_REGION_H__ |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | |
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| 11 | struct intel_memory_region; |
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| 12 | struct drm_i915_gem_object; |
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| 13 | struct sg_table; |
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| 14 | |
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| 15 | struct i915_gem_apply_to_region; |
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| 16 | |
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| 17 | #define I915_BO_INVALID_OFFSET ((resource_size_t)-1) |
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| 18 | |
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| 19 | /** |
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| 20 | * struct i915_gem_apply_to_region_ops - ops to use when iterating over all |
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| 21 | * region objects. |
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| 22 | */ |
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| 23 | struct i915_gem_apply_to_region_ops { |
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| 24 | /** |
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| 25 | * @process_obj: Process the current object |
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| 26 | * |
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| 27 | * Note that if this function is part of a ww transaction, and |
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| 28 | * if returns -EDEADLK for one of the objects, it may be |
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| 29 | * rerun for that same object in the same pass. |
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| 30 | */ |
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| 31 | int (*process_obj)(struct i915_gem_apply_to_region *apply, |
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| 32 | struct drm_i915_gem_object *obj); |
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| 33 | }; |
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| 34 | |
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| 35 | /** |
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| 36 | * struct i915_gem_apply_to_region - Argument to the struct |
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| 37 | * i915_gem_apply_to_region_ops functions. |
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| 38 | * @ops: The ops for the operation. |
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| 39 | * @ww: Locking context used for the transaction. |
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| 40 | * @interruptible: Whether to perform object locking interruptible. |
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| 41 | * |
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| 42 | * This structure is intended to be embedded in a private struct if needed |
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| 43 | */ |
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| 44 | struct i915_gem_apply_to_region { |
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| 45 | const struct i915_gem_apply_to_region_ops *ops; |
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| 46 | struct i915_gem_ww_ctx *ww; |
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| 47 | u32 interruptible:1; |
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| 48 | }; |
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| 49 | |
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| 50 | void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj, |
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| 51 | struct intel_memory_region *mem); |
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| 52 | void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj); |
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| 53 | |
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| 54 | struct drm_i915_gem_object * |
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| 55 | i915_gem_object_create_region(struct intel_memory_region *mem, |
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| 56 | resource_size_t size, |
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| 57 | resource_size_t page_size, |
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| 58 | unsigned int flags); |
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| 59 | struct drm_i915_gem_object * |
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| 60 | i915_gem_object_create_region_at(struct intel_memory_region *mem, |
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| 61 | resource_size_t offset, |
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| 62 | resource_size_t size, |
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| 63 | unsigned int flags); |
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| 64 | |
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| 65 | int i915_gem_process_region(struct intel_memory_region *mr, |
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| 66 | struct i915_gem_apply_to_region *apply); |
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| 67 | #endif |
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| 68 | |
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