LXR linux/drivers/gpu/drm/i915/gt/intel_context

   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 "intel_engine_types.h"
  17#include "intel_sseu.h"
  18
  19struct i915_gem_context;
  20struct i915_vma;
  21struct intel_context;
  22struct intel_ring;
  23
  24struct intel_context_ops {
  25        int (*pin)(struct intel_context *ce);
  26        void (*unpin)(struct intel_context *ce);
  27
  28        void (*enter)(struct intel_context *ce);
  29        void (*exit)(struct intel_context *ce);
  30
  31        void (*reset)(struct intel_context *ce);
  32        void (*destroy)(struct kref *kref);
  33};
  34
  35struct intel_context {
  36        struct kref ref;
  37
  38        struct i915_gem_context *gem_context;
  39        struct intel_engine_cs *engine;
  40        struct intel_engine_cs *inflight;
  41
  42        struct list_head signal_link;
  43        struct list_head signals;
  44
  45        struct i915_vma *state;
  46        struct intel_ring *ring;
  47
  48        u32 *lrc_reg_state;
  49        u64 lrc_desc;
  50
  51        unsigned int active_count; /* notionally protected by timeline->mutex */
  52
  53        atomic_t pin_count;
  54        struct mutex pin_mutex; /* guards pinning and associated on-gpuing */
  55
  56        /**
  57         * active: Active tracker for the rq activity (inc. external) on this
  58         * intel_context object.
  59         */
  60        struct i915_active active;
  61
  62        const struct intel_context_ops *ops;
  63
  64        /** sseu: Control eu/slice partitioning */
  65        struct intel_sseu sseu;
  66};
  67
  68#endif /* __INTEL_CONTEXT_TYPES__ */
  69