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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-04-29 12:28:27 +02:00
Vinay Belgaumkar
3b1592fb78
This WA requires us to limit media GT frequency requests to a certain cap value during driver load. Freq limits are restored after load completes, so perf will not be affected during normal operations. During normal driver operation, this WA requires dummy writes to media offset 0x380D8C after every ~63 GGTT writes. This will ensure completion of the LMEM writes originating from Gunit. During driver unload(before FLR), the WA requires that we set requested frequency to the cap value again. v3: Do not use WA number in function name. Call WA wrapper from xe_device. Rename some variables, check for locks in the correct function (Rodrigo). Ensure reset path is also covered for this WA. v4: Fix BAT failure v5: Add a function pointer for ggtt_ops (Michal W) v6: Fix name collision and use static function (Rodrigo) Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240620224928.3986377-2-vinay.belgaumkar@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
40 lines
1.3 KiB
C
40 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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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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