diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h index eb0f432f78fe..b8ed68943625 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h @@ -24,23 +24,61 @@ #ifndef __AMDGPU_MN_H__ #define __AMDGPU_MN_H__ -/* - * MMU Notifier - */ -struct amdgpu_mn; +#include <linux/types.h> +#include <linux/hmm.h> +#include <linux/rwsem.h> +#include <linux/workqueue.h> +#include <linux/interval_tree.h> enum amdgpu_mn_type { AMDGPU_MN_TYPE_GFX, AMDGPU_MN_TYPE_HSA, }; -#if defined(CONFIG_MMU_NOTIFIER) +/** + * struct amdgpu_mn + * + * @adev: amdgpu device pointer + * @mm: process address space + * @type: type of MMU notifier + * @work: destruction work item + * @node: hash table node to find structure by adev and mn + * @lock: rw semaphore protecting the notifier nodes + * @objects: interval tree containing amdgpu_mn_nodes + * @mirror: HMM mirror function support + * + * Data for each amdgpu device and process address space. + */ +struct amdgpu_mn { + /* constant after initialisation */ + struct amdgpu_device *adev; + struct mm_struct *mm; + enum amdgpu_mn_type type; + + /* only used on destruction */ + struct work_struct work; + + /* protected by adev->mn_lock */ + struct hlist_node node; + + /* objects protected by lock */ + struct rw_semaphore lock; + struct rb_root_cached objects; + +#ifdef CONFIG_HMM_MIRROR + /* HMM mirror */ + struct hmm_mirror mirror; +#endif +}; + +#if defined(CONFIG_HMM_MIRROR) void amdgpu_mn_lock(struct amdgpu_mn *mn); void amdgpu_mn_unlock(struct amdgpu_mn *mn); struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, enum amdgpu_mn_type type); int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr); void amdgpu_mn_unregister(struct amdgpu_bo *bo); +void amdgpu_hmm_init_range(struct hmm_range *range); #else static inline void amdgpu_mn_lock(struct amdgpu_mn *mn) {} static inline void amdgpu_mn_unlock(struct amdgpu_mn *mn) {} @@ -51,6 +89,8 @@ static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev, } static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr) { + DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, " + "add CONFIG_ZONE_DEVICE=y in config file to fix this\n"); return -ENODEV; } static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {} |