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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-11 12:12:37 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-06-11 13:44:24 +0300 |
| commit | e568ac3874be7dcef3da0cc3bd6b91ca9dd14aa0 (patch) | |
| tree | 0fb2a096795e7b7aab14bbdcd1f81c7a94c5c10a /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | a8cff4c8283af35546339c9ada5a90a70fe4a075 (diff) | |
| download | linux-e568ac3874be7dcef3da0cc3bd6b91ca9dd14aa0.tar.xz | |
drm/i915: Pull kref into i915_address_space
Make the kref common to both derived structs (i915_ggtt and i915_ppgtt)
so that we can safely reference count an abstract ctx->vm address space.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190611091238.15808-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 97700a37c12b..3b6336ef64f2 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -293,6 +293,8 @@ struct pagestash { }; struct i915_address_space { + struct kref ref; + struct drm_mm mm; struct drm_i915_private *i915; struct device *dma; @@ -412,7 +414,6 @@ struct i915_ggtt { struct i915_hw_ppgtt { struct i915_address_space vm; - struct kref ref; intel_engine_mask_t pd_dirty_engines; union { @@ -582,10 +583,19 @@ i915_page_dir_dma_addr(const struct i915_hw_ppgtt *ppgtt, const unsigned n) static inline struct i915_ggtt * i915_vm_to_ggtt(struct i915_address_space *vm) { + BUILD_BUG_ON(offsetof(struct i915_ggtt, vm)); GEM_BUG_ON(!i915_is_ggtt(vm)); return container_of(vm, struct i915_ggtt, vm); } +static inline struct i915_hw_ppgtt * +i915_vm_to_ppgtt(struct i915_address_space *vm) +{ + BUILD_BUG_ON(offsetof(struct i915_hw_ppgtt, vm)); + GEM_BUG_ON(i915_is_ggtt(vm)); + return container_of(vm, struct i915_hw_ppgtt, vm); +} + #define INTEL_MAX_PPAT_ENTRIES 8 #define INTEL_PPAT_PERFECT_MATCH (~0U) @@ -628,18 +638,19 @@ void i915_ggtt_cleanup_hw(struct drm_i915_private *dev_priv); int i915_ppgtt_init_hw(struct drm_i915_private *dev_priv); struct i915_hw_ppgtt *i915_ppgtt_create(struct drm_i915_private *dev_priv); -void i915_ppgtt_release(struct kref *kref); -static inline struct i915_hw_ppgtt *i915_ppgtt_get(struct i915_hw_ppgtt *ppgtt) +static inline struct i915_address_space * +i915_vm_get(struct i915_address_space *vm) { - kref_get(&ppgtt->ref); - return ppgtt; + kref_get(&vm->ref); + return vm; } -static inline void i915_ppgtt_put(struct i915_hw_ppgtt *ppgtt) +void i915_vm_release(struct kref *kref); + +static inline void i915_vm_put(struct i915_address_space *vm) { - if (ppgtt) - kref_put(&ppgtt->ref, i915_ppgtt_release); + kref_put(&vm->ref, i915_vm_release); } int gen6_ppgtt_pin(struct i915_hw_ppgtt *base); |