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 #define GEN8_LR_CONTEXT_ALIGN 4096
  28
  29 /* Execlists regs */
  30 #define RING_ELSP(ring)                 ((ring)->mmio_base+0x230)
  31 #define RING_EXECLIST_STATUS(ring)      ((ring)->mmio_base+0x234)
  32 #define RING_CONTEXT_CONTROL(ring)      ((ring)->mmio_base+0x244)
  33 #define   CTX_CTRL_INHIBIT_SYN_CTX_SWITCH       (1 << 3)
  34 #define   CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT   (1 << 0)
  35 #define RING_CONTEXT_STATUS_BUF(ring)   ((ring)->mmio_base+0x370)
  36 #define RING_CONTEXT_STATUS_PTR(ring)   ((ring)->mmio_base+0x3a0)
  37
  38 /* Logical Rings */
  39 int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request,
  40                                             struct intel_context *ctx);
  41 void intel_logical_ring_stop(struct intel_engine_cs *ring);
  42 void intel_logical_ring_cleanup(struct intel_engine_cs *ring);
  43 int intel_logical_rings_init(struct drm_device *dev);
  44
  45 int logical_ring_flush_all_caches(struct intel_ringbuffer *ringbuf,
  46                                   struct intel_context *ctx);
  47 /**
  48  * intel_logical_ring_advance() - advance the ringbuffer tail
  49  * @ringbuf: Ringbuffer to advance.
  50  *
  51  * The tail is only updated in our logical ringbuffer struct.
  52  */
  53 static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
  54 {
  55         ringbuf->tail &= ringbuf->size - 1;
  56 }
  57 /**
  58  * intel_logical_ring_emit() - write a DWORD to the ringbuffer.
  59  * @ringbuf: Ringbuffer to write to.
  60  * @data: DWORD to write.
  61  */
  62 static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
  63                                            u32 data)
  64 {
  65         iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
  66         ringbuf->tail += 4;
  67 }
  68
  69 /* Logical Ring Contexts */
  70 void intel_lr_context_free(struct intel_context *ctx);
  71 int intel_lr_context_deferred_create(struct intel_context *ctx,
  72                                      struct intel_engine_cs *ring);
  73 void intel_lr_context_unpin(struct intel_engine_cs *ring,
  74                 struct intel_context *ctx);
  75 void intel_lr_context_reset(struct drm_device *dev,
  76                         struct intel_context *ctx);
  77
  78 /* Execlists */
  79 int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
  80 int intel_execlists_submission(struct drm_device *dev, struct drm_file *file,
  81                                struct intel_engine_cs *ring,
  82                                struct intel_context *ctx,
  83                                struct drm_i915_gem_execbuffer2 *args,
  84                                struct list_head *vmas,
  85                                struct drm_i915_gem_object *batch_obj,
  86                                u64 exec_start, u32 dispatch_flags);
  87 u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj);
  88
  89 void intel_lrc_irq_handler(struct intel_engine_cs *ring);
  90 void intel_execlists_retire_requests(struct intel_engine_cs *ring);
  91
  92 #endif /* _INTEL_LRC_H_ */