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e486147c91
Add amdxdna_gem_prime_export() and amdxdna_gem_prime_import() for BO import and export. Register mmu notifier for imported BO as well. When MMU_NOTIFIER_UNMAP event is received, queue work to remove the notifier. The same BO could be mapped multiple times if it is exported and imported by an application. Use a link list to track VMAs the BO been mapped. v2: Rebased and call get_dma_buf() before dma_buf_attach() v3: Removed import_attach usage Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Link: https://lore.kernel.org/r/20250325200105.2744079-1-lizhi.hou@amd.com
86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* 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 amdxdna_gem_obj *dev_heap; /* For AMDXDNA_BO_DEV */
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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, bool use_vmap);
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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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