--- zzzz-none-000/linux-3.10.107/include/drm/ttm/ttm_bo_api.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/include/drm/ttm/ttm_bo_api.h 2021-02-04 17:41:59.000000000 +0000 @@ -32,24 +32,37 @@ #define _TTM_BO_API_H_ #include +#include #include #include #include #include #include -#include #include +#include struct ttm_bo_device; struct drm_mm_node; +/** + * struct ttm_place + * + * @fpfn: first valid page frame number to put the object + * @lpfn: last valid page frame number to put the object + * @flags: memory domain and caching flags for the object + * + * Structure indicating a possible place to put an object. + */ +struct ttm_place { + unsigned fpfn; + unsigned lpfn; + uint32_t flags; +}; /** * struct ttm_placement * - * @fpfn: first valid page frame number to put the object - * @lpfn: last valid page frame number to put the object * @num_placement: number of preferred placements * @placement: preferred placements * @num_busy_placement: number of preferred placements when need to evict buffer @@ -58,12 +71,10 @@ * Structure indicating the placement you request for an object. */ struct ttm_placement { - unsigned fpfn; - unsigned lpfn; - unsigned num_placement; - const uint32_t *placement; - unsigned num_busy_placement; - const uint32_t *busy_placement; + unsigned num_placement; + const struct ttm_place *placement; + unsigned num_busy_placement; + const struct ttm_place *busy_placement; }; /** @@ -144,7 +155,6 @@ * @type: The bo type. * @destroy: Destruction function. If NULL, kfree is used. * @num_pages: Actual number of pages. - * @addr_space_offset: Address space offset. * @acc_size: Accounted size for this object. * @kref: Reference count of this buffer object. When this refcount reaches * zero, the object is put on the delayed delete list. @@ -153,7 +163,6 @@ * Lru lists may keep one refcount, the delayed delete list, and kref != 0 * keeps one refcount. When this refcount reaches zero, * the object is destroyed. - * @event_queue: Queue for processes waiting on buffer object status change. * @mem: structure describing current placement. * @persistent_swap_storage: Usually the swap storage is deleted for buffers * pinned in physical memory. If this behaviour is not desired, this member @@ -164,19 +173,12 @@ * @lru: List head for the lru list. * @ddestroy: List head for the delayed destroy list. * @swap: List head for swap LRU list. - * @val_seq: Sequence of the validation holding the @reserved lock. - * Used to avoid starvation when many processes compete to validate the - * buffer. This member is protected by the bo_device::lru_lock. - * @seq_valid: The value of @val_seq is valid. This value is protected by - * the bo_device::lru_lock. - * @reserved: Deadlock-free lock used for synchronization state transitions. - * @sync_obj: Pointer to a synchronization object. * @priv_flags: Flags describing buffer object internal state. - * @vm_rb: Rb node for the vm rb tree. - * @vm_node: Address space manager node. + * @vma_node: Address space manager node. * @offset: The current GPU offset, which can have different meanings * depending on the memory type. For SYSTEM type memory, it should be 0. * @cur_placement: Hint of current placement. + * @wu_mutex: Wait unreserved mutex. * * Base class for TTM buffer object, that deals with data placement and CPU * mappings. GPU mappings are really up to the driver, but for simpler GPUs @@ -200,7 +202,6 @@ enum ttm_bo_type type; void (*destroy) (struct ttm_buffer_object *); unsigned long num_pages; - uint64_t addr_space_offset; size_t acc_size; /** @@ -209,10 +210,9 @@ struct kref kref; struct kref list_kref; - wait_queue_head_t event_queue; /** - * Members protected by the bo::reserved lock. + * Members protected by the bo::resv::reserved lock. */ struct ttm_mem_reg mem; @@ -234,33 +234,14 @@ struct list_head ddestroy; struct list_head swap; struct list_head io_reserve_lru; - uint32_t val_seq; - bool seq_valid; - - /** - * Members protected by the bdev::lru_lock - * only when written to. - */ - - atomic_t reserved; /** - * Members protected by struct buffer_object_device::fence_lock - * In addition, setting sync_obj to anything else - * than NULL requires bo::reserved to be held. This allows for - * checking NULL while reserved but not holding the mentioned lock. + * Members protected by a bo reservation. */ - void *sync_obj; unsigned long priv_flags; - /** - * Members protected by the bdev::vm_lock - */ - - struct rb_node vm_rb; - struct drm_mm_node *vm_node; - + struct drm_vma_offset_node vma_node; /** * Special members that are protected by the reserve lock @@ -268,10 +249,14 @@ * either of these locks held. */ - unsigned long offset; + uint64_t offset; /* GPU address space is independent of CPU word size */ uint32_t cur_placement; struct sg_table *sg; + + struct reservation_object *resv; + struct reservation_object ttm_resv; + struct mutex wu_mutex; }; /** @@ -331,6 +316,20 @@ */ extern int ttm_bo_wait(struct ttm_buffer_object *bo, bool lazy, bool interruptible, bool no_wait); + +/** + * ttm_bo_mem_compat - Check if proposed placement is compatible with a bo + * + * @placement: Return immediately if buffer is busy. + * @mem: The struct ttm_mem_reg indicating the region where the bo resides + * @new_flags: Describes compatible placement found + * + * Returns true if the placement is compatible + */ +extern bool ttm_bo_mem_compat(struct ttm_placement *placement, + struct ttm_mem_reg *mem, + uint32_t *new_flags); + /** * ttm_bo_validate * @@ -475,6 +474,7 @@ * point to the shmem object backing a GEM object if TTM is used to back a * GEM user interface. * @acc_size: Accounted size for this object. + * @resv: Pointer to a reservation_object, or NULL to let ttm allocate one. * @destroy: Destroy function. Use NULL for kfree(). * * This function initializes a pre-allocated struct ttm_buffer_object. @@ -502,16 +502,16 @@ struct file *persistent_swap_storage, size_t acc_size, struct sg_table *sg, + struct reservation_object *resv, void (*destroy) (struct ttm_buffer_object *)); /** - * ttm_bo_synccpu_object_init + * ttm_bo_create * * @bdev: Pointer to a ttm_bo_device struct. - * @bo: Pointer to a ttm_buffer_object to be initialized. * @size: Requested size of buffer object. * @type: Requested type of buffer object. - * @flags: Initial placement flags. + * @placement: Initial placement. * @page_alignment: Data alignment in pages. * @interruptible: If needing to sleep while waiting for GPU resources, * sleep interruptible. @@ -540,20 +540,6 @@ struct ttm_buffer_object **p_bo); /** - * ttm_bo_check_placement - * - * @bo: the buffer object. - * @placement: placements - * - * Performs minimal validity checking on an intended change of - * placement flags. - * Returns - * -EINVAL: Intended change is invalid or not allowed. - */ -extern int ttm_bo_check_placement(struct ttm_buffer_object *bo, - struct ttm_placement *placement); - -/** * ttm_bo_init_mm * * @bdev: Pointer to a ttm_bo_device struct. @@ -724,19 +710,5 @@ size_t count, loff_t *f_pos, bool write); extern void ttm_bo_swapout_all(struct ttm_bo_device *bdev); - -/** - * ttm_bo_is_reserved - return an indication if a ttm buffer object is reserved - * - * @bo: The buffer object to check. - * - * This function returns an indication if a bo is reserved or not, and should - * only be used to print an error when it is not from incorrect api usage, since - * there's no guarantee that it is the caller that is holding the reservation. - */ -static inline bool ttm_bo_is_reserved(struct ttm_buffer_object *bo) -{ - return atomic_read(&bo->reserved); -} - +extern int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo); #endif