1 /* $NetBSD: i915_gem_fence_reg.h,v 1.5 2021/12/19 11:33:49 riastradh Exp $ */ 2 3 /* 4 * Copyright © 2016 Intel Corporation 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 23 * IN THE SOFTWARE. 24 * 25 */ 26 27 #ifndef __I915_FENCE_REG_H__ 28 #define __I915_FENCE_REG_H__ 29 30 #include <linux/list.h> 31 #include <linux/types.h> 32 33 struct drm_i915_gem_object; 34 struct i915_ggtt; 35 struct i915_vma; 36 struct intel_gt; 37 struct sg_table; 38 39 #define I965_FENCE_PAGE 4096UL 40 41 struct i915_fence_reg { 42 struct list_head link; 43 struct i915_ggtt *ggtt; 44 struct i915_vma *vma; 45 atomic_t pin_count; 46 int id; 47 /** 48 * Whether the tiling parameters for the currently 49 * associated fence register have changed. Note that 50 * for the purposes of tracking tiling changes we also 51 * treat the unfenced register, the register slot that 52 * the object occupies whilst it executes a fenced 53 * command (such as BLT on gen2/3), as a "fence". 54 */ 55 bool dirty; 56 }; 57 58 /* i915_gem_fence_reg.c */ 59 struct i915_fence_reg *i915_reserve_fence(struct i915_ggtt *ggtt); 60 void i915_unreserve_fence(struct i915_fence_reg *fence); 61 62 void i915_gem_restore_fences(struct i915_ggtt *ggtt); 63 64 void i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj, 65 struct sg_table *pages); 66 void i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj, 67 struct sg_table *pages); 68 69 void i915_ggtt_init_fences(struct i915_ggtt *ggtt); 70 71 void intel_gt_init_swizzling(struct intel_gt *gt); 72 73 #endif 74