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VF's drivers can't modify GGTT PTEs except the range explicitly assigned by the PF driver. To allow hardware enforcement of this requirement, each GGTT PTE has a field with the VF number that identifies which VF can modify that particular GGTT PTE entry. Only PF driver can modify this field and PF driver shall do that before VF drivers will be loaded. Add function to prepare PTEs. Since it will be used only by the PF driver, make it available only for CONFIG_PCI_IOV=y. Bspec: 45015, 52395 Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240415173937.1287-3-michal.wajdeczko@intel.com
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef _XE_GGTT_H_
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#define _XE_GGTT_H_
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#include "xe_ggtt_types.h"
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struct drm_printer;
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void xe_ggtt_set_pte(struct xe_ggtt *ggtt, u64 addr, u64 pte);
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int xe_ggtt_init_early(struct xe_ggtt *ggtt);
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int xe_ggtt_init(struct xe_ggtt *ggtt);
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void xe_ggtt_printk(struct xe_ggtt *ggtt, const char *prefix);
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int xe_ggtt_balloon(struct xe_ggtt *ggtt, u64 start, u64 size, struct drm_mm_node *node);
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void xe_ggtt_deballoon(struct xe_ggtt *ggtt, struct drm_mm_node *node);
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int xe_ggtt_insert_special_node(struct xe_ggtt *ggtt, struct drm_mm_node *node,
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u32 size, u32 align);
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int xe_ggtt_insert_special_node_locked(struct xe_ggtt *ggtt,
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struct drm_mm_node *node,
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u32 size, u32 align, u32 mm_flags);
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void xe_ggtt_remove_node(struct xe_ggtt *ggtt, struct drm_mm_node *node,
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bool invalidate);
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void xe_ggtt_map_bo(struct xe_ggtt *ggtt, struct xe_bo *bo);
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int xe_ggtt_insert_bo(struct xe_ggtt *ggtt, struct xe_bo *bo);
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int xe_ggtt_insert_bo_at(struct xe_ggtt *ggtt, struct xe_bo *bo,
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u64 start, u64 end);
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void xe_ggtt_remove_bo(struct xe_ggtt *ggtt, struct xe_bo *bo);
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int xe_ggtt_dump(struct xe_ggtt *ggtt, struct drm_printer *p);
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#ifdef CONFIG_PCI_IOV
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void xe_ggtt_assign(struct xe_ggtt *ggtt, const struct drm_mm_node *node, u16 vfid);
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#endif
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#endif
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