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b5cfe6f7a6
Add a flag PIN_VALIDATE, to indicate we don't need to pin and only protected by the object lock. This removes the need to unpin, which is done by just releasing the lock. eb_reserve is slightly reworked for readability, but the same steps are still done: - First pass pins with NONBLOCK. - Second pass unbinds all objects first, then pins. - Third pass is only called when not all objects are softpinned, and unbinds all objects, then calls i915_gem_evict_vm(), then pins. Changes since v1: - Split out eb_reserve() into separate functions for readability. Changes since v2: - Make batch buffer mappable on platforms where only GGTT is available, to prevent moving the batch buffer during relocations. Changes since v3: - Preserve current behavior for batch buffer, instead be cautious when calling i915_gem_object_ggtt_pin_ww, and re-use the current batch vma if it's inside ggtt and map-and-fenceable. - Remove impossible condition check from eb_reserve. (Matt) Changes since v5: - Do not even temporarily pin, just call i915_gem_evict_vm() and mark all vma's as unpinned. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220114132320.109030-7-maarten.lankhorst@linux.intel.com
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2020 Intel Corporation
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*/
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#ifndef __I915_GEM_GTT_H__
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#define __I915_GEM_GTT_H__
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#include <linux/io-mapping.h>
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#include <linux/types.h>
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#include <drm/drm_mm.h>
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#include "gt/intel_gtt.h"
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#include "i915_scatterlist.h"
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struct drm_i915_gem_object;
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struct i915_address_space;
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struct i915_gem_ww_ctx;
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int __must_check i915_gem_gtt_prepare_pages(struct drm_i915_gem_object *obj,
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struct sg_table *pages);
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void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
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struct sg_table *pages);
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int i915_gem_gtt_reserve(struct i915_address_space *vm,
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struct i915_gem_ww_ctx *ww,
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struct drm_mm_node *node,
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u64 size, u64 offset, unsigned long color,
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unsigned int flags);
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int i915_gem_gtt_insert(struct i915_address_space *vm,
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struct i915_gem_ww_ctx *ww,
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struct drm_mm_node *node,
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u64 size, u64 alignment, unsigned long color,
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u64 start, u64 end, unsigned int flags);
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/* Flags used by pin/bind&friends. */
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#define PIN_NOEVICT BIT_ULL(0)
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#define PIN_NOSEARCH BIT_ULL(1)
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#define PIN_NONBLOCK BIT_ULL(2)
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#define PIN_MAPPABLE BIT_ULL(3)
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#define PIN_ZONE_4G BIT_ULL(4)
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#define PIN_HIGH BIT_ULL(5)
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#define PIN_OFFSET_BIAS BIT_ULL(6)
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#define PIN_OFFSET_FIXED BIT_ULL(7)
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#define PIN_VALIDATE BIT_ULL(8) /* validate placement only, no need to call unpin() */
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#define PIN_GLOBAL BIT_ULL(10) /* I915_VMA_GLOBAL_BIND */
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#define PIN_USER BIT_ULL(11) /* I915_VMA_LOCAL_BIND */
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#define PIN_OFFSET_MASK I915_GTT_PAGE_MASK
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#endif
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