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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/accel/amdxdna/amdxdna_gem.h
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/* SPDX-License-Identifier: GPL-2.0 */

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/*

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 * Copyright (C) 2024, Advanced Micro Devices, Inc.

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 */

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#ifndef _AMDXDNA_GEM_H_

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#define _AMDXDNA_GEM_H_

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#include <linux/hmm.h>

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struct amdxdna_umap {

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	struct vm_area_struct		*vma;

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	struct mmu_interval_notifier	notifier;

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	struct hmm_range		range;

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	struct work_struct		hmm_unreg_work;

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	struct amdxdna_gem_obj		*abo;

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	struct list_head		node;

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	struct kref			refcnt;

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	bool				invalid;

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	bool				unmapped;

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};

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struct amdxdna_mem {

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	u64				userptr;

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	void				*kva;

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	u64				dev_addr;

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	size_t				size;

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	struct page			**pages;

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	u32				nr_pages;

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	struct list_head		umap_list;

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	bool				map_invalid;

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};

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struct amdxdna_gem_obj {

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	struct drm_gem_shmem_object	base;

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	struct amdxdna_client		*client;

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	u8				type;

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	bool				pinned;

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	struct mutex			lock; /* Protects: pinned */

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	struct amdxdna_mem		mem;

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	/* Below members is uninitialized when needed */

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	struct drm_mm			mm; /* For AMDXDNA_BO_DEV_HEAP */

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	struct drm_mm_node		mm_node; /* For AMDXDNA_BO_DEV */

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	u32				assigned_hwctx;

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	struct dma_buf			*dma_buf;

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	struct dma_buf_attachment	*attach;

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};

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#define to_gobj(obj)    (&(obj)->base.base)

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#define is_import_bo(obj) ((obj)->attach)

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static inline struct amdxdna_gem_obj *to_xdna_obj(struct drm_gem_object *gobj)

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{

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	return container_of(gobj, struct amdxdna_gem_obj, base.base);

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}

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struct amdxdna_gem_obj *amdxdna_gem_get_obj(struct amdxdna_client *client,

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					    u32 bo_hdl, u8 bo_type);

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static inline void amdxdna_gem_put_obj(struct amdxdna_gem_obj *abo)

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{

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	drm_gem_object_put(to_gobj(abo));

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}

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void amdxdna_umap_put(struct amdxdna_umap *mapp);

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struct drm_gem_object *

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amdxdna_gem_create_object_cb(struct drm_device *dev, size_t size);

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struct drm_gem_object *

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amdxdna_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf);

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struct amdxdna_gem_obj *

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amdxdna_drm_alloc_dev_bo(struct drm_device *dev,

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			 struct amdxdna_drm_create_bo *args,

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			 struct drm_file *filp);

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int amdxdna_gem_pin_nolock(struct amdxdna_gem_obj *abo);

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int amdxdna_gem_pin(struct amdxdna_gem_obj *abo);

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void amdxdna_gem_unpin(struct amdxdna_gem_obj *abo);

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int amdxdna_drm_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);

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int amdxdna_drm_get_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);

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int amdxdna_drm_sync_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);

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#endif /* _AMDXDNA_GEM_H_ */

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