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d47cc89d81
Non-virtualized resources require fixups after SRIOV VF migration. Caching GGTT references rather than re-computing them from the underlying Buffer Object is something we want to avoid, as such code would require additional fixup step and additional locking around all the places where the address is accessed. This change removes the cached GPU address from the Sub-Allocation Manager, and introduces a function which recomputes and returns the address instead. v2: renamed xe_sa_manager_gpu_addr(), added kerneldoc Signed-off-by: Tomasz Lis <tomasz.lis@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://lore.kernel.org/r/20250802031045.1127138-2-tomasz.lis@intel.com Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#ifndef _XE_SA_H_
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#define _XE_SA_H_
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#include <linux/sizes.h>
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#include <linux/types.h>
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#include "xe_bo.h"
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#include "xe_sa_types.h"
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struct dma_fence;
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struct xe_tile;
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struct xe_sa_manager *__xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 guard, u32 align);
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struct drm_suballoc *__xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size, gfp_t gfp);
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static inline struct xe_sa_manager *xe_sa_bo_manager_init(struct xe_tile *tile, u32 size, u32 align)
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{
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return __xe_sa_bo_manager_init(tile, size, SZ_4K, align);
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}
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/**
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* xe_sa_bo_new() - Make a suballocation.
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* @sa_manager: the &xe_sa_manager
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* @size: number of bytes we want to suballocate
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*
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* Try to make a suballocation of size @size.
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*
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* Return: a &drm_suballoc, or an ERR_PTR.
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*/
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static inline struct drm_suballoc *xe_sa_bo_new(struct xe_sa_manager *sa_manager, u32 size)
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{
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return __xe_sa_bo_new(sa_manager, size, GFP_KERNEL);
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}
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void xe_sa_bo_flush_write(struct drm_suballoc *sa_bo);
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void xe_sa_bo_free(struct drm_suballoc *sa_bo, struct dma_fence *fence);
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static inline struct xe_sa_manager *
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to_xe_sa_manager(struct drm_suballoc_manager *mng)
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{
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return container_of(mng, struct xe_sa_manager, base);
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}
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/**
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* xe_sa_manager_gpu_addr - Retrieve GPU address of a back storage BO
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* within suballocator.
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* @sa_manager: the &xe_sa_manager struct instance
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* Return: GGTT address of the back storage BO.
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*/
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static inline u64 xe_sa_manager_gpu_addr(struct xe_sa_manager *sa_manager)
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{
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return xe_bo_ggtt_addr(sa_manager->bo);
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}
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static inline u64 xe_sa_bo_gpu_addr(struct drm_suballoc *sa)
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{
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return xe_sa_manager_gpu_addr(to_xe_sa_manager(sa->manager)) +
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drm_suballoc_soffset(sa);
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}
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static inline void *xe_sa_bo_cpu_addr(struct drm_suballoc *sa)
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{
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return to_xe_sa_manager(sa->manager)->cpu_ptr +
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drm_suballoc_soffset(sa);
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}
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#endif
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