drivers/gpu/drm/i915/intel_lrc.h

   1 /*
   2  * Copyright © 2014 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef _INTEL_LRC_H_
  25 #define _INTEL_LRC_H_
  26
  27 /* Logical Rings */
  28 void intel_logical_ring_stop(struct intel_engine_cs *ring);
  29 void intel_logical_ring_cleanup(struct intel_engine_cs *ring);
  30 int intel_logical_rings_init(struct drm_device *dev);
  31
  32 void intel_logical_ring_advance_and_submit(struct intel_ringbuffer *ringbuf);
  33 static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
  34 {
  35         ringbuf->tail &= ringbuf->size - 1;
  36 }
  37 static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
  38                                            u32 data)
  39 {
  40         iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
  41         ringbuf->tail += 4;
  42 }
  43 int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords);
  44
  45 /* Logical Ring Contexts */
  46 void intel_lr_context_free(struct intel_context *ctx);
  47 int intel_lr_context_deferred_create(struct intel_context *ctx,
  48                                      struct intel_engine_cs *ring);
  49
  50 /* Execlists */
  51 int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
  52 int intel_execlists_submission(struct drm_device *dev, struct drm_file *file,
  53                                struct intel_engine_cs *ring,
  54                                struct intel_context *ctx,
  55                                struct drm_i915_gem_execbuffer2 *args,
  56                                struct list_head *vmas,
  57                                struct drm_i915_gem_object *batch_obj,
  58                                u64 exec_start, u32 flags);
  59
  60 #endif /* _INTEL_LRC_H_ */