/* SPDX-License-Identifier: GPL-2.0 OR MIT *//* * Copyright 2014-2022 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" /** * kq_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 * * kq_submit_packet: Update the write pointer and doorbell of a kernel queue. * * kq_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 * */ int kq_acquire_packet_buffer(struct kernel_queue *kq,				size_t packet_size_in_dwords,				unsigned int **buffer_ptr);void kq_submit_packet(struct kernel_queue *kq);void kq_rollback_packet(struct kernel_queue *kq);  struct kernel_queue {	/* 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;}; #endif /* KFD_KERNEL_QUEUE_H_ */