Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 1 | /* |
Jubin John | 05d6ac1 | 2016-02-14 20:22:17 -0800 | [diff] [blame] | 2 | * Copyright(c) 2015, 2016 Intel Corporation. |
Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 3 | * |
| 4 | * This file is provided under a dual BSD/GPLv2 license. When using or |
| 5 | * redistributing this file, you may do so under either license. |
| 6 | * |
| 7 | * GPL LICENSE SUMMARY |
| 8 | * |
Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of version 2 of the GNU General Public License as |
| 11 | * published by the Free Software Foundation. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * BSD LICENSE |
| 19 | * |
Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 20 | * Redistribution and use in source and binary forms, with or without |
| 21 | * modification, are permitted provided that the following conditions |
| 22 | * are met: |
| 23 | * |
| 24 | * - Redistributions of source code must retain the above copyright |
| 25 | * notice, this list of conditions and the following disclaimer. |
| 26 | * - Redistributions in binary form must reproduce the above copyright |
| 27 | * notice, this list of conditions and the following disclaimer in |
| 28 | * the documentation and/or other materials provided with the |
| 29 | * distribution. |
| 30 | * - Neither the name of Intel Corporation nor the names of its |
| 31 | * contributors may be used to endorse or promote products derived |
| 32 | * from this software without specific prior written permission. |
| 33 | * |
| 34 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 35 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 36 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 37 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 38 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 39 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 41 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 42 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 43 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 44 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 45 | * |
| 46 | */ |
| 47 | #include <linux/device.h> |
| 48 | #include <linux/wait.h> |
| 49 | |
| 50 | #include "common.h" |
| 51 | #include "iowait.h" |
Mitko Haralanov | 701e441 | 2015-10-30 18:58:43 -0400 | [diff] [blame] | 52 | #include "user_exp_rcv.h" |
Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 53 | |
| 54 | extern uint extended_psn; |
| 55 | |
| 56 | struct hfi1_user_sdma_pkt_q { |
| 57 | struct list_head list; |
| 58 | unsigned ctxt; |
| 59 | unsigned subctxt; |
| 60 | u16 n_max_reqs; |
| 61 | atomic_t n_reqs; |
| 62 | u16 reqidx; |
| 63 | struct hfi1_devdata *dd; |
| 64 | struct kmem_cache *txreq_cache; |
| 65 | struct user_sdma_request *reqs; |
| 66 | struct iowait busy; |
| 67 | unsigned state; |
Mitko Haralanov | a0d4069 | 2015-12-08 17:10:13 -0500 | [diff] [blame] | 68 | wait_queue_head_t wait; |
Mitko Haralanov | 0840aea | 2016-02-03 14:37:06 -0800 | [diff] [blame] | 69 | unsigned long unpinned; |
Mitko Haralanov | 5cd3a88 | 2016-03-08 11:15:22 -0800 | [diff] [blame] | 70 | struct rb_root sdma_rb_root; |
Mitko Haralanov | 5511d78 | 2016-03-08 11:15:44 -0800 | [diff] [blame] | 71 | u32 n_locked; |
| 72 | struct list_head evict; |
| 73 | spinlock_t evict_lock; /* protect evict and n_locked */ |
Mike Marciniszyn | 7724105 | 2015-07-30 15:17:43 -0400 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | struct hfi1_user_sdma_comp_q { |
| 77 | u16 nentries; |
| 78 | struct hfi1_sdma_comp_entry *comps; |
| 79 | }; |
| 80 | |
| 81 | int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *, struct file *); |
| 82 | int hfi1_user_sdma_free_queues(struct hfi1_filedata *); |
| 83 | int hfi1_user_sdma_process_request(struct file *, struct iovec *, unsigned long, |
| 84 | unsigned long *); |