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f8477ce6b5
Use the new MMU_NOTIFY_MIGRATE event to skip GPU MMU invalidations of device private memory and handle the invalidation in the driver as part of migrating device private memory. Link: https://lore.kernel.org/r/20200723223004.9586-5-rcampbell@nvidia.com Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
64 lines
2 KiB
C
64 lines
2 KiB
C
#ifndef __NOUVEAU_SVM_H__
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#define __NOUVEAU_SVM_H__
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#include <nvif/os.h>
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#include <linux/mmu_notifier.h>
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struct drm_device;
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struct drm_file;
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struct nouveau_drm;
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struct nouveau_svmm {
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struct mmu_notifier notifier;
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struct nouveau_vmm *vmm;
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struct {
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unsigned long start;
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unsigned long limit;
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} unmanaged;
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struct mutex mutex;
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};
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#if IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM)
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void nouveau_svm_init(struct nouveau_drm *);
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void nouveau_svm_fini(struct nouveau_drm *);
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void nouveau_svm_suspend(struct nouveau_drm *);
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void nouveau_svm_resume(struct nouveau_drm *);
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int nouveau_svmm_init(struct drm_device *, void *, struct drm_file *);
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void nouveau_svmm_fini(struct nouveau_svmm **);
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int nouveau_svmm_join(struct nouveau_svmm *, u64 inst);
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void nouveau_svmm_part(struct nouveau_svmm *, u64 inst);
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int nouveau_svmm_bind(struct drm_device *, void *, struct drm_file *);
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void nouveau_svmm_invalidate(struct nouveau_svmm *svmm, u64 start, u64 limit);
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u64 *nouveau_pfns_alloc(unsigned long npages);
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void nouveau_pfns_free(u64 *pfns);
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void nouveau_pfns_map(struct nouveau_svmm *svmm, struct mm_struct *mm,
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unsigned long addr, u64 *pfns, unsigned long npages);
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#else /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
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static inline void nouveau_svm_init(struct nouveau_drm *drm) {}
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static inline void nouveau_svm_fini(struct nouveau_drm *drm) {}
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static inline void nouveau_svm_suspend(struct nouveau_drm *drm) {}
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static inline void nouveau_svm_resume(struct nouveau_drm *drm) {}
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static inline int nouveau_svmm_init(struct drm_device *device, void *p,
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struct drm_file *file)
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{
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return -ENOSYS;
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}
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static inline void nouveau_svmm_fini(struct nouveau_svmm **svmmp) {}
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static inline int nouveau_svmm_join(struct nouveau_svmm *svmm, u64 inst)
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{
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return 0;
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}
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static inline void nouveau_svmm_part(struct nouveau_svmm *svmm, u64 inst) {}
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static inline int nouveau_svmm_bind(struct drm_device *device, void *p,
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struct drm_file *file)
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{
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return -ENOSYS;
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}
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#endif /* IS_ENABLED(CONFIG_DRM_NOUVEAU_SVM) */
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#endif
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