[mirror_ubuntu-bionic-kernel.git] / drivers / infiniband / hw / hfi1 / user_sdma.h

#ifndef _HFI1_USER_SDMA_H
#define _HFI1_USER_SDMA_H
/*
 * Copyright(c) 2015 - 2017 Intel Corporation.
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * BSD LICENSE
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  - Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  - Neither the name of Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#include <linux/device.h>
#include <linux/wait.h>

#include "common.h"
#include "iowait.h"
#include "user_exp_rcv.h"

extern uint extended_psn;

struct hfi1_user_sdma_pkt_q {
	struct list_head list;
	unsigned ctxt;
	unsigned subctxt;
	u16 n_max_reqs;
	atomic_t n_reqs;
	u16 reqidx;
	struct hfi1_devdata *dd;
	struct kmem_cache *txreq_cache;
	struct user_sdma_request *reqs;
	unsigned long *req_in_use;
	struct iowait busy;
	unsigned state;
	wait_queue_head_t wait;
	unsigned long unpinned;
	struct mmu_rb_handler *handler;
	atomic_t n_locked;
	struct mm_struct *mm;
};

struct hfi1_user_sdma_comp_q {
	u16 nentries;
	struct hfi1_sdma_comp_entry *comps;
};

int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
				struct hfi1_filedata *fd);
int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd);
int hfi1_user_sdma_process_request(struct hfi1_filedata *fd,
				   struct iovec *iovec, unsigned long dim,
				   unsigned long *count);

#endif /* _HFI1_USER_SDMA_H */
Commit	Line	Data
f4cd8765 MR	1	#ifndef _HFI1_USER_SDMA_H
f4cd8765 MR	2	#define _HFI1_USER_SDMA_H
77241056	3	/*
f4cd8765	4	* Copyright(c) 2015 - 2017 Intel Corporation.
77241056 MM	5	*
	6	* This file is provided under a dual BSD/GPLv2 license. When using or
	7	* redistributing this file, you may do so under either license.
	8	*
	9	* GPL LICENSE SUMMARY
	10	*
77241056 MM	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of version 2 of the GNU General Public License as
	13	* published by the Free Software Foundation.
	14	*
	15	* This program is distributed in the hope that it will be useful, but
	16	* WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	18	* General Public License for more details.
	19	*
	20	* BSD LICENSE
	21	*
77241056 MM	22	* Redistribution and use in source and binary forms, with or without
	23	* modification, are permitted provided that the following conditions
	24	* are met:
	25	*
	26	* - Redistributions of source code must retain the above copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* - Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in
	30	* the documentation and/or other materials provided with the
	31	* distribution.
	32	* - Neither the name of Intel Corporation nor the names of its
	33	* contributors may be used to endorse or promote products derived
	34	* from this software without specific prior written permission.
	35	*
	36	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	37	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	38	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	39	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	40	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	41	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	42	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	43	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	44	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	45	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	46	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	47	*
	48	*/
	49	#include <linux/device.h>
	50	#include <linux/wait.h>
	51
	52	#include "common.h"
	53	#include "iowait.h"
701e441d	54	#include "user_exp_rcv.h"
77241056 MM	55
	56	extern uint extended_psn;
	57
	58	struct hfi1_user_sdma_pkt_q {
	59	struct list_head list;
	60	unsigned ctxt;
	61	unsigned subctxt;
	62	u16 n_max_reqs;
	63	atomic_t n_reqs;
	64	u16 reqidx;
	65	struct hfi1_devdata *dd;
	66	struct kmem_cache *txreq_cache;
	67	struct user_sdma_request *reqs;
7b3256e3	68	unsigned long *req_in_use;
77241056 MM	69	struct iowait busy;
77241056 MM	70	unsigned state;
a0d40693	71	wait_queue_head_t wait;
0840aea9	72	unsigned long unpinned;
e0b09ac5	73	struct mmu_rb_handler *handler;
b7df192f	74	atomic_t n_locked;
3faa3d9a	75	struct mm_struct *mm;
77241056 MM	76	};
	77
	78	struct hfi1_user_sdma_comp_q {
	79	u16 nentries;
	80	struct hfi1_sdma_comp_entry *comps;
	81	};
	82
5042cddf MR	83	int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
5042cddf MR	84	struct hfi1_filedata *fd);
f4cd8765	85	int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd);
5042cddf MR	86	int hfi1_user_sdma_process_request(struct hfi1_filedata *fd,
	87	struct iovec *iovec, unsigned long dim,
	88	unsigned long *count);
	89
f4cd8765	90	#endif /* _HFI1_USER_SDMA_H */