f51455d442
Start converting over from the byte count to its semantic macro, either we want to allocate the size of a physical page in main memory or we want the size of a virtual page in the GTT. 4096 could mean either, but PAGE_SIZE and I915_GTT_PAGE_SIZE are explicit and should help improve code comprehension and future changes. In the future, we may want to use variable GTT page sizes and so have the challenge of knowing which hardcoded values were used to represent a physical page vs the virtual page. v2: Look for a few more 4096s to convert, discover IS_ALIGNED(). v3: 4096ul paranoia, make fence alignment a distinct value of 4096, keep bdw stolen w/a as 4096 until we know better. v4: Add asserts that i915_vma_insert() start/end are aligned to GTT page sizes. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170110144734.26052-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef __I915_FENCE_REG_H__
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#define __I915_FENCE_REG_H__
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#include <linux/list.h>
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struct drm_i915_private;
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struct i915_vma;
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#define I965_FENCE_PAGE 4096UL
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struct drm_i915_fence_reg {
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struct list_head link;
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struct drm_i915_private *i915;
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struct i915_vma *vma;
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int pin_count;
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int id;
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/**
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* Whether the tiling parameters for the currently
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* associated fence register have changed. Note that
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* for the purposes of tracking tiling changes we also
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* treat the unfenced register, the register slot that
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* the object occupies whilst it executes a fenced
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* command (such as BLT on gen2/3), as a "fence".
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*/
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bool dirty;
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};
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#endif
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