2 * SPDX-License-Identifier: MIT
4 * Copyright © 2019 Intel Corporation
7 #ifndef __INTEL_CONTEXT_TYPES__
8 #define __INTEL_CONTEXT_TYPES__
10 #include <linux/kref.h>
11 #include <linux/list.h>
12 #include <linux/mutex.h>
13 #include <linux/types.h>
15 #include "i915_active_types.h"
16 #include "i915_utils.h"
17 #include "intel_engine_types.h"
18 #include "intel_sseu.h"
20 struct i915_gem_context;
25 struct intel_context_ops {
26 int (*alloc)(struct intel_context *ce);
28 int (*pin)(struct intel_context *ce);
29 void (*unpin)(struct intel_context *ce);
31 void (*enter)(struct intel_context *ce);
32 void (*exit)(struct intel_context *ce);
34 void (*reset)(struct intel_context *ce);
35 void (*destroy)(struct kref *kref);
38 struct intel_context {
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)
46 struct i915_address_space *vm;
47 struct i915_gem_context *gem_context;
49 struct list_head signal_link;
50 struct list_head signals;
52 struct i915_vma *state;
53 struct intel_ring *ring;
54 struct intel_timeline *timeline;
57 #define CONTEXT_ALLOC_BIT 0
62 unsigned int active_count; /* protected by timeline->mutex */
65 struct mutex pin_mutex; /* guards pinning and associated on-gpuing */
68 * active: Active tracker for the rq activity (inc. external) on this
69 * intel_context object.
71 struct i915_active active;
73 const struct intel_context_ops *ops;
75 /** sseu: Control eu/slice partitioning */
76 struct intel_sseu sseu;
79 #endif /* __INTEL_CONTEXT_TYPES__ */