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63 lines
1.5 KiB
63 lines
1.5 KiB
/* 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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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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