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 #define CONTEXT_REDZONE POISON_INUSE 21 22 struct i915_gem_context; 23 struct i915_vma; 24 struct intel_context; 25 struct intel_ring; 26 27 struct intel_context_ops { 28 int (*alloc)(struct intel_context *ce); 29 30 int (*pin)(struct intel_context *ce); 31 void (*unpin)(struct intel_context *ce); 32 33 void (*enter)(struct intel_context *ce); 34 void (*exit)(struct intel_context *ce); 35 36 void (*reset)(struct intel_context *ce); 37 void (*destroy)(struct kref *kref); 38 }; 39 40 struct intel_context { 41 struct kref ref; 42 43 struct intel_engine_cs *engine; 44 struct intel_engine_cs *inflight; 45 #define intel_context_inflight(ce) ptr_mask_bits((ce)->inflight, 2) 46 #define intel_context_inflight_count(ce) ptr_unmask_bits((ce)->inflight, 2) 47 48 struct i915_address_space *vm; 49 struct i915_gem_context __rcu *gem_context; 50 51 struct list_head signal_link; 52 struct list_head signals; 53 54 struct i915_vma *state; 55 struct intel_ring *ring; 56 struct intel_timeline *timeline; 57 58 unsigned long flags; 59 #define CONTEXT_BARRIER_BIT 0 60 #define CONTEXT_ALLOC_BIT 1 61 #define CONTEXT_VALID_BIT 2 62 #define CONTEXT_USE_SEMAPHORES 3 63 #define CONTEXT_BANNED 4 64 #define CONTEXT_FORCE_SINGLE_SUBMISSION 5 65 #define CONTEXT_NOPREEMPT 6 66 67 u32 *lrc_reg_state; 68 u64 lrc_desc; 69 u32 tag; /* cookie passed to HW to track this context on submission */ 70 71 unsigned int active_count; /* protected by timeline->mutex */ 72 73 atomic_t pin_count; 74 struct mutex pin_mutex; /* guards pinning and associated on-gpuing */ 75 76 /** 77 * active: Active tracker for the rq activity (inc. external) on this 78 * intel_context object. 79 */ 80 struct i915_active active; 81 82 const struct intel_context_ops *ops; 83 84 /** sseu: Control eu/slice partitioning */ 85 struct intel_sseu sseu; 86 }; 87 88 #endif /* __INTEL_CONTEXT_TYPES__ */ 89