1 #ifndef _HFI1_USER_SDMA_H 2 #define _HFI1_USER_SDMA_H 3 /* 4 * Copyright(c) 2015 - 2017 Intel Corporation. 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 * 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 * 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" 54 #include "user_exp_rcv.h" 55 56 extern uint extended_psn; 57 58 struct hfi1_user_sdma_pkt_q { 59 struct list_head list; 60 unsigned ctxt; 61 u16 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; 68 unsigned long *req_in_use; 69 struct iowait busy; 70 unsigned state; 71 wait_queue_head_t wait; 72 unsigned long unpinned; 73 struct mmu_rb_handler *handler; 74 atomic_t n_locked; 75 struct mm_struct *mm; 76 }; 77 78 struct hfi1_user_sdma_comp_q { 79 u16 nentries; 80 struct hfi1_sdma_comp_entry *comps; 81 }; 82 83 int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt, 84 struct hfi1_filedata *fd); 85 int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd); 86 int hfi1_user_sdma_process_request(struct hfi1_filedata *fd, 87 struct iovec *iovec, unsigned long dim, 88 unsigned long *count); 89 90 #endif /* _HFI1_USER_SDMA_H */ 91