diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gtt.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h b/drivers/gpu/drm/i915/gt/intel_gtt.h index 50a98ce39f74..edea95b97c36 100644 --- a/drivers/gpu/drm/i915/gt/intel_gtt.h +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h @@ -245,7 +245,9 @@ struct i915_address_space { atomic_t open; struct mutex mutex; /* protects vma and our lists */ - struct dma_resv resv; /* reservation lock for all pd objects, and buffer pool */ + + struct kref resv_ref; /* kref to keep the reservation lock alive. */ + struct dma_resv _resv; /* reservation lock for all pd objects, and buffer pool */ #define VM_CLASS_GGTT 0 #define VM_CLASS_PPGTT 1 #define VM_CLASS_DPT 2 @@ -405,13 +407,36 @@ i915_vm_get(struct i915_address_space *vm) return vm; } +/** + * i915_vm_resv_get - Obtain a reference on the vm's reservation lock + * @vm: The vm whose reservation lock we want to share. + * + * Return: A pointer to the vm's reservation lock. + */ +static inline struct dma_resv *i915_vm_resv_get(struct i915_address_space *vm) +{ + kref_get(&vm->resv_ref); + return &vm->_resv; +} + void i915_vm_release(struct kref *kref); +void i915_vm_resv_release(struct kref *kref); + static inline void i915_vm_put(struct i915_address_space *vm) { kref_put(&vm->ref, i915_vm_release); } +/** + * i915_vm_resv_put - Release a reference on the vm's reservation lock + * @resv: Pointer to a reservation lock obtained from i915_vm_resv_get() + */ +static inline void i915_vm_resv_put(struct i915_address_space *vm) +{ + kref_put(&vm->resv_ref, i915_vm_resv_release); +} + static inline struct i915_address_space * i915_vm_open(struct i915_address_space *vm) { @@ -507,6 +532,7 @@ void i915_ggtt_enable_guc(struct i915_ggtt *ggtt); void i915_ggtt_disable_guc(struct i915_ggtt *ggtt); int i915_init_ggtt(struct drm_i915_private *i915); void i915_ggtt_driver_release(struct drm_i915_private *i915); +void i915_ggtt_driver_late_release(struct drm_i915_private *i915); static inline bool i915_ggtt_has_aperture(const struct i915_ggtt *ggtt) { |