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 /* Execlists regs */
  28 #define RING_ELSP(ring)                 ((ring)->mmio_base+0x230)
  29 #define RING_EXECLIST_STATUS(ring)      ((ring)->mmio_base+0x234)
  30 #define RING_CONTEXT_CONTROL(ring)      ((ring)->mmio_base+0x244)
  31 #define RING_CONTEXT_STATUS_BUF(ring)   ((ring)->mmio_base+0x370)
  32 #define RING_CONTEXT_STATUS_PTR(ring)   ((ring)->mmio_base+0x3a0)
  33
  34 /* Logical Rings */
  35 void intel_logical_ring_stop(struct intel_engine_cs *ring);
  36 void intel_logical_ring_cleanup(struct intel_engine_cs *ring);
  37 int intel_logical_rings_init(struct drm_device *dev);
  38
  39 int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf);
  40 void intel_logical_ring_advance_and_submit(struct intel_ringbuffer *ringbuf);
  41 static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
  42 {
  43         ringbuf->tail &= ringbuf->size - 1;
  44 }
  45 static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
  46                                            u32 data)
  47 {
  48         iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
  49         ringbuf->tail += 4;
  50 }
  51 int intel_logical_ring_begin(struct intel_ringbuffer *ringbuf, int num_dwords);
  52
  53 /* Logical Ring Contexts */
  54 void intel_lr_context_free(struct intel_context *ctx);
  55 int intel_lr_context_deferred_create(struct intel_context *ctx,
  56                                      struct intel_engine_cs *ring);
  57
  58 /* Execlists */
  59 int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
  60 int intel_execlists_submission(struct drm_device *dev, struct drm_file *file,
  61                                struct intel_engine_cs *ring,
  62                                struct intel_context *ctx,
  63                                struct drm_i915_gem_execbuffer2 *args,
  64                                struct list_head *vmas,
  65                                struct drm_i915_gem_object *batch_obj,
  66                                u64 exec_start, u32 flags);
  67 u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj);
  68
  69 struct intel_ctx_submit_request {
  70         struct intel_context *ctx;
  71         struct intel_engine_cs *ring;
  72         u32 tail;
  73
  74         struct list_head execlist_link;
  75         struct work_struct work;
  76
  77         int elsp_submitted;
  78 };
  79
  80 void intel_execlists_handle_ctx_events(struct intel_engine_cs *ring);
  81
  82 #endif /* _INTEL_LRC_H_ */