67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
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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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#ifndef _HFI1_USER_EXP_RCV_H
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#define _HFI1_USER_EXP_RCV_H
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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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struct mmu_interval_notifier notifier;
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struct mutex cover_mutex;
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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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struct mutex invalidate_mutex; /* covers hw removal */
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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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