Line data    Source code

       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             : #define GEN8_CSB_ENTRIES 6
      29             : #define GEN8_CSB_PTR_MASK 0x07
      30             : 
      31             : /* Execlists regs */
      32             : #define RING_ELSP(ring)                 ((ring)->mmio_base+0x230)
      33             : #define RING_EXECLIST_STATUS_LO(ring)   ((ring)->mmio_base+0x234)
      34             : #define RING_EXECLIST_STATUS_HI(ring)   ((ring)->mmio_base+0x234 + 4)
      35             : #define RING_CONTEXT_CONTROL(ring)      ((ring)->mmio_base+0x244)
      36             : #define   CTX_CTRL_INHIBIT_SYN_CTX_SWITCH       (1 << 3)
      37             : #define   CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT   (1 << 0)
      38             : #define   CTX_CTRL_RS_CTX_ENABLE                (1 << 1)
      39             : #define RING_CONTEXT_STATUS_BUF_LO(ring, i)     ((ring)->mmio_base+0x370 + (i) * 8)
      40             : #define RING_CONTEXT_STATUS_BUF_HI(ring, i)     ((ring)->mmio_base+0x370 + (i) * 8 + 4)
      41             : #define RING_CONTEXT_STATUS_PTR(ring)   ((ring)->mmio_base+0x3a0)
      42             : 
      43             : /* Logical Rings */
      44             : int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request);
      45             : int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request);
      46             : void intel_logical_ring_stop(struct intel_engine_cs *ring);
      47             : void intel_logical_ring_cleanup(struct intel_engine_cs *ring);
      48             : int intel_logical_rings_init(struct drm_device *dev);
      49             : int intel_logical_ring_begin(struct drm_i915_gem_request *req, int num_dwords);
      50             : 
      51             : int logical_ring_flush_all_caches(struct drm_i915_gem_request *req);
      52             : /**
      53             :  * intel_logical_ring_advance() - advance the ringbuffer tail
      54             :  * @ringbuf: Ringbuffer to advance.
      55             :  *
      56             :  * The tail is only updated in our logical ringbuffer struct.
      57             :  */
      58           0 : static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
      59             : {
      60           0 :         ringbuf->tail &= ringbuf->size - 1;
      61           0 : }
      62             : /**
      63             :  * intel_logical_ring_emit() - write a DWORD to the ringbuffer.
      64             :  * @ringbuf: Ringbuffer to write to.
      65             :  * @data: DWORD to write.
      66             :  */
      67           0 : static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
      68             :                                            u32 data)
      69             : {
      70           0 :         iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
      71           0 :         ringbuf->tail += 4;
      72           0 : }
      73             : 
      74             : /* Logical Ring Contexts */
      75             : 
      76             : /* One extra page is added before LRC for GuC as shared data */
      77             : #define LRC_GUCSHR_PN   (0)
      78             : #define LRC_PPHWSP_PN   (LRC_GUCSHR_PN + 1)
      79             : #define LRC_STATE_PN    (LRC_PPHWSP_PN + 1)
      80             : 
      81             : void intel_lr_context_free(struct intel_context *ctx);
      82             : int intel_lr_context_deferred_alloc(struct intel_context *ctx,
      83             :                                     struct intel_engine_cs *ring);
      84             : void intel_lr_context_unpin(struct drm_i915_gem_request *req);
      85             : void intel_lr_context_reset(struct drm_device *dev,
      86             :                         struct intel_context *ctx);
      87             : uint64_t intel_lr_context_descriptor(struct intel_context *ctx,
      88             :                                      struct intel_engine_cs *ring);
      89             : 
      90             : /* Execlists */
      91             : int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
      92             : struct i915_execbuffer_params;
      93             : int intel_execlists_submission(struct i915_execbuffer_params *params,
      94             :                                struct drm_i915_gem_execbuffer2 *args,
      95             :                                struct list_head *vmas);
      96             : u32 intel_execlists_ctx_id(struct drm_i915_gem_object *ctx_obj);
      97             : 
      98             : void intel_lrc_irq_handler(struct intel_engine_cs *ring);
      99             : void intel_execlists_retire_requests(struct intel_engine_cs *ring);
     100             : 
     101             : #endif /* _INTEL_LRC_H_ */