root/drivers/gpu/drm/i915/gt/intel_context_types.h

INCLUDED FROM

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright © 2019 Intel Corporation
   5  */
   6 
   7 #ifndef __INTEL_CONTEXT_TYPES__
   8 #define __INTEL_CONTEXT_TYPES__
   9 
  10 #include <linux/kref.h>
  11 #include <linux/list.h>
  12 #include <linux/mutex.h>
  13 #include <linux/types.h>
  14 
  15 #include "i915_active_types.h"
  16 #include "i915_utils.h"
  17 #include "intel_engine_types.h"
  18 #include "intel_sseu.h"
  19 
  20 struct i915_gem_context;
  21 struct i915_vma;
  22 struct intel_context;
  23 struct intel_ring;
  24 
  25 struct intel_context_ops {
  26         int (*alloc)(struct intel_context *ce);
  27 
  28         int (*pin)(struct intel_context *ce);
  29         void (*unpin)(struct intel_context *ce);
  30 
  31         void (*enter)(struct intel_context *ce);
  32         void (*exit)(struct intel_context *ce);
  33 
  34         void (*reset)(struct intel_context *ce);
  35         void (*destroy)(struct kref *kref);
  36 };
  37 
  38 struct intel_context {
  39         struct kref ref;
  40 
  41         struct intel_engine_cs *engine;
  42         struct intel_engine_cs *inflight;
  43 #define intel_context_inflight(ce) ptr_mask_bits((ce)->inflight, 2)
  44 #define intel_context_inflight_count(ce) ptr_unmask_bits((ce)->inflight, 2)
  45 
  46         struct i915_address_space *vm;
  47         struct i915_gem_context *gem_context;
  48 
  49         struct list_head signal_link;
  50         struct list_head signals;
  51 
  52         struct i915_vma *state;
  53         struct intel_ring *ring;
  54         struct intel_timeline *timeline;
  55 
  56         unsigned long flags;
  57 #define CONTEXT_ALLOC_BIT 0
  58 
  59         u32 *lrc_reg_state;
  60         u64 lrc_desc;
  61 
  62         unsigned int active_count; /* protected by timeline->mutex */
  63 
  64         atomic_t pin_count;
  65         struct mutex pin_mutex; /* guards pinning and associated on-gpuing */
  66 
  67         /**
  68          * active: Active tracker for the rq activity (inc. external) on this
  69          * intel_context object.
  70          */
  71         struct i915_active active;
  72 
  73         const struct intel_context_ops *ops;
  74 
  75         /** sseu: Control eu/slice partitioning */
  76         struct intel_sseu sseu;
  77 };
  78 
  79 #endif /* __INTEL_CONTEXT_TYPES__ */