summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/hfi1/user_sdma.h
blob: 39001714f5517ecc8c2e74a4769a589d7e6ee06a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
/*
 * Copyright(c) 2015, 2016 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 *, struct file *);
int hfi1_user_sdma_free_queues(struct hfi1_filedata *);
int hfi1_user_sdma_process_request(struct file *, struct iovec *, unsigned long,
				   unsigned long *);