/* * Copyright © 2016 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * */ #ifndef __I915_FENCE_REG_H__ #define __I915_FENCE_REG_H__ #include <linux/list.h> #include <linux/types.h> struct drm_i915_gem_object; struct drm_i915_private; struct i915_ggtt; struct i915_vma; struct intel_gt; struct sg_table; #define I965_FENCE_PAGE 4096UL struct i915_fence_reg { struct list_head link; struct drm_i915_private *i915; struct i915_vma *vma; atomic_t pin_count; int id; /** * Whether the tiling parameters for the currently * associated fence register have changed. Note that * for the purposes of tracking tiling changes we also * treat the unfenced register, the register slot that * the object occupies whilst it executes a fenced * command (such as BLT on gen2/3), as a "fence". */ bool dirty; }; /* i915_gem_fence_reg.c */ struct i915_fence_reg *i915_reserve_fence(struct drm_i915_private *i915); void i915_unreserve_fence(struct i915_fence_reg *fence); void i915_gem_restore_fences(struct drm_i915_private *i915); void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj, struct sg_table *pages); void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj, struct sg_table *pages); void i915_ggtt_init_fences(struct i915_ggtt *ggtt); void intel_gt_init_swizzling(struct intel_gt *gt); #endif