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965930962a
The current attempted split between xe/i915 vs. display for intel_frontbuffer is a mess: - the i915 rcu leaks through the interface to the display side - the obj->frontbuffer write-side is now protected by a display specific spinlock even though the actual obj->framebuffer pointer lives in a i915 specific structure - the kref is getting poked directly from both sides - i915_active is still on the display side Clean up the mess by moving everything about the frontbuffer lifetime management to the i915/xe side: - the rcu usage is now completely contained in i915 - frontbuffer_lock is moved into i915 - kref is on the i915/xe side (xe needs the refcount as well due to intel_frontbuffer_queue_flush()->intel_frontbuffer_ref()) - the bo (and its refcounting) is no longer on the display side - i915_active is contained in i915 I was pondering whether we could do this in some kind of smaller steps, and perhaps we could, but it would probably have to start with a bunch of reverts (which for sure won't go cleanly anymore). So not convinced it's worth the hassle. Acked-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patch.msgid.link/20251016185408.22735-10-ville.syrjala@linux.intel.com
82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
// SPDX-License-Identifier: MIT
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/* Copyright © 2024 Intel Corporation */
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#include <drm/drm_panic.h>
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#include "gem/i915_gem_mman.h"
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#include "gem/i915_gem_object.h"
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#include "gem/i915_gem_object_frontbuffer.h"
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#include "i915_debugfs.h"
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#include "intel_bo.h"
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bool intel_bo_is_tiled(struct drm_gem_object *obj)
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{
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return i915_gem_object_is_tiled(to_intel_bo(obj));
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}
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bool intel_bo_is_userptr(struct drm_gem_object *obj)
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{
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return i915_gem_object_is_userptr(to_intel_bo(obj));
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}
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bool intel_bo_is_shmem(struct drm_gem_object *obj)
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{
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return i915_gem_object_is_shmem(to_intel_bo(obj));
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}
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bool intel_bo_is_protected(struct drm_gem_object *obj)
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{
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return i915_gem_object_is_protected(to_intel_bo(obj));
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}
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int intel_bo_fb_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
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{
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return i915_gem_fb_mmap(to_intel_bo(obj), vma);
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}
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int intel_bo_read_from_page(struct drm_gem_object *obj, u64 offset, void *dst, int size)
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{
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return i915_gem_object_read_from_page(to_intel_bo(obj), offset, dst, size);
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}
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struct intel_frontbuffer *intel_bo_frontbuffer_get(struct drm_gem_object *_obj)
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{
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struct drm_i915_gem_object *obj = to_intel_bo(_obj);
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struct i915_frontbuffer *front;
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front = i915_gem_object_frontbuffer_get(obj);
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if (!front)
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return NULL;
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return &front->base;
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}
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void intel_bo_frontbuffer_ref(struct intel_frontbuffer *_front)
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{
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struct i915_frontbuffer *front =
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container_of(_front, typeof(*front), base);
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i915_gem_object_frontbuffer_ref(front);
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}
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void intel_bo_frontbuffer_put(struct intel_frontbuffer *_front)
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{
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struct i915_frontbuffer *front =
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container_of(_front, typeof(*front), base);
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return i915_gem_object_frontbuffer_put(front);
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}
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void intel_bo_frontbuffer_flush_for_display(struct intel_frontbuffer *_front)
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{
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struct i915_frontbuffer *front =
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container_of(_front, typeof(*front), base);
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i915_gem_object_flush_if_display(front->obj);
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}
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void intel_bo_describe(struct seq_file *m, struct drm_gem_object *obj)
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{
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i915_debugfs_describe_obj(m, to_intel_bo(obj));
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}
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