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104 lines
3.5 KiB
104 lines
3.5 KiB
#ifndef _HFI1_USER_EXP_RCV_H |
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#define _HFI1_USER_EXP_RCV_H |
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/* |
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* Copyright(c) 2020 - Cornelis Networks, Inc. |
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* Copyright(c) 2015 - 2017 Intel Corporation. |
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* |
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* This file is provided under a dual BSD/GPLv2 license. When using or |
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* redistributing this file, you may do so under either license. |
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* |
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* GPL LICENSE SUMMARY |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of version 2 of the GNU General Public License as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* BSD LICENSE |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* - Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* - Neither the name of Intel Corporation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include "hfi.h" |
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#include "exp_rcv.h" |
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struct tid_pageset { |
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u16 idx; |
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u16 count; |
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}; |
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struct tid_user_buf { |
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unsigned long vaddr; |
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unsigned long length; |
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unsigned int npages; |
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struct page **pages; |
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struct tid_pageset *psets; |
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unsigned int n_psets; |
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}; |
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struct tid_rb_node { |
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struct mmu_interval_notifier notifier; |
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struct hfi1_filedata *fdata; |
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unsigned long phys; |
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struct tid_group *grp; |
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u32 rcventry; |
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dma_addr_t dma_addr; |
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bool freed; |
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unsigned int npages; |
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struct page *pages[]; |
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}; |
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static inline int num_user_pages(unsigned long addr, |
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unsigned long len) |
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{ |
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const unsigned long spage = addr & PAGE_MASK; |
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const unsigned long epage = (addr + len - 1) & PAGE_MASK; |
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return 1 + ((epage - spage) >> PAGE_SHIFT); |
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} |
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int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd, |
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struct hfi1_ctxtdata *uctxt); |
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void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd); |
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int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd, |
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struct hfi1_tid_info *tinfo); |
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int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd, |
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struct hfi1_tid_info *tinfo); |
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int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd, |
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struct hfi1_tid_info *tinfo); |
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static inline struct mm_struct *mm_from_tid_node(struct tid_rb_node *node) |
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{ |
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return node->notifier.mm; |
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} |
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#endif /* _HFI1_USER_EXP_RCV_H */
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