/* * Copyright 2014 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * */ #ifndef KFD_KERNEL_QUEUE_H_#define KFD_KERNEL_QUEUE_H_ #include <linux/list.h>#include <linux/types.h>#include "kfd_priv.h" /** * struct kernel_queue_ops * * @initialize: Initialize a kernel queue, including allocations of GART memory * needed for the queue. * * @uninitialize: Uninitialize a kernel queue and free all its memory usages. * * @acquire_packet_buffer: Returns a pointer to the location in the kernel * queue ring buffer where the calling function can write its packet. It is * Guaranteed that there is enough space for that packet. It also updates the * pending write pointer to that location so subsequent calls to * acquire_packet_buffer will get a correct write pointer * * @submit_packet: Update the write pointer and doorbell of a kernel queue. * * @sync_with_hw: Wait until the write pointer and the read pointer of a kernel * queue are equal, which means the CP has read all the submitted packets. * * @rollback_packet: This routine is called if we failed to build an acquired * packet for some reason. It just overwrites the pending wptr with the current * one * */struct kernel_queue_ops {	bool	(*initialize)(struct kernel_queue *kq, struct kfd_dev *dev,			enum kfd_queue_type type, unsigned int queue_size);	void	(*uninitialize)(struct kernel_queue *kq);	int	(*acquire_packet_buffer)(struct kernel_queue *kq,					size_t packet_size_in_dwords,					unsigned int **buffer_ptr); 	void	(*submit_packet)(struct kernel_queue *kq);	void	(*rollback_packet)(struct kernel_queue *kq);}; struct kernel_queue {	struct kernel_queue_ops ops;	struct kernel_queue_ops ops_asic_specific; 	/* data */	struct kfd_dev		*dev;	struct mqd_manager	*mqd_mgr;	struct queue		*queue;	uint64_t		pending_wptr64;	uint32_t		pending_wptr;	unsigned int		nop_packet; 	struct kfd_mem_obj	*rptr_mem;	uint32_t		*rptr_kernel;	uint64_t		rptr_gpu_addr;	struct kfd_mem_obj	*wptr_mem;	union {		uint64_t	*wptr64_kernel;		uint32_t	*wptr_kernel;	};	uint64_t		wptr_gpu_addr;	struct kfd_mem_obj	*pq;	uint64_t		pq_gpu_addr;	uint32_t		*pq_kernel_addr;	struct kfd_mem_obj	*eop_mem;	uint64_t		eop_gpu_addr;	uint32_t		*eop_kernel_addr; 	struct kfd_mem_obj	*fence_mem_obj;	uint64_t		fence_gpu_addr;	void			*fence_kernel_address; 	struct list_head	list;}; void kernel_queue_init_cik(struct kernel_queue_ops *ops);void kernel_queue_init_vi(struct kernel_queue_ops *ops);void kernel_queue_init_v9(struct kernel_queue_ops *ops);void kernel_queue_init_v10(struct kernel_queue_ops *ops); #endif /* KFD_KERNEL_QUEUE_H_ */