1/* 2 * Copyright © 2016 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25#ifndef __I915_FENCE_REG_H__ 26#define __I915_FENCE_REG_H__ 27 28#include <linux/list.h> 29#include <linux/types.h> 30 31struct drm_i915_gem_object; 32struct i915_ggtt; 33struct i915_vma; 34struct intel_gt; 35struct sg_table; 36 37#define I965_FENCE_PAGE 4096UL 38 39struct i915_fence_reg { 40 struct list_head link; 41 struct i915_ggtt *ggtt; 42 struct i915_vma *vma; 43 atomic_t pin_count; 44 int id; 45 /** 46 * Whether the tiling parameters for the currently 47 * associated fence register have changed. Note that 48 * for the purposes of tracking tiling changes we also 49 * treat the unfenced register, the register slot that 50 * the object occupies whilst it executes a fenced 51 * command (such as BLT on gen2/3), as a "fence". 52 */ 53 bool dirty; 54}; 55 56/* i915_gem_fence_reg.c */ 57struct i915_fence_reg *i915_reserve_fence(struct i915_ggtt *ggtt); 58void i915_unreserve_fence(struct i915_fence_reg *fence); 59 60void i915_gem_restore_fences(struct i915_ggtt *ggtt); 61 62void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj, 63 struct sg_table *pages); 64void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj, 65 struct sg_table *pages); 66 67void i915_ggtt_init_fences(struct i915_ggtt *ggtt); 68 69void intel_gt_init_swizzling(struct intel_gt *gt); 70 71#endif 72