diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h new file mode 100644 index 000000000000..9eef679e1311 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/intel_ggtt_fencing.h @@ -0,0 +1,78 @@ +/* + * 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 __INTEL_GGTT_FENCING_H__ +#define __INTEL_GGTT_FENCING_H__ + +#include <linux/list.h> +#include <linux/types.h> + +#include "i915_active.h" + +struct drm_i915_gem_object; +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 i915_ggtt *ggtt; + struct i915_vma *vma; + atomic_t pin_count; + struct i915_active active; + 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; + u32 start; + u32 size; + u32 tiling; + u32 stride; +}; + +struct i915_fence_reg *i915_reserve_fence(struct i915_ggtt *ggtt); +void i915_unreserve_fence(struct i915_fence_reg *fence); + +void intel_ggtt_restore_fences(struct i915_ggtt *ggtt); + +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 intel_ggtt_init_fences(struct i915_ggtt *ggtt); +void intel_ggtt_fini_fences(struct i915_ggtt *ggtt); + +void intel_gt_init_swizzling(struct intel_gt *gt); + +#endif |