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