162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright(c) 2020 - Cornelis Networks, Inc. 462306a36Sopenharmony_ci * Copyright(c) 2015 - 2017 Intel Corporation. 562306a36Sopenharmony_ci */ 662306a36Sopenharmony_ci 762306a36Sopenharmony_ci#ifndef _HFI1_USER_EXP_RCV_H 862306a36Sopenharmony_ci#define _HFI1_USER_EXP_RCV_H 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci#include "hfi.h" 1162306a36Sopenharmony_ci#include "exp_rcv.h" 1262306a36Sopenharmony_ci 1362306a36Sopenharmony_cistruct tid_pageset { 1462306a36Sopenharmony_ci u16 idx; 1562306a36Sopenharmony_ci u16 count; 1662306a36Sopenharmony_ci}; 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_cistruct tid_user_buf { 1962306a36Sopenharmony_ci struct mmu_interval_notifier notifier; 2062306a36Sopenharmony_ci struct mutex cover_mutex; 2162306a36Sopenharmony_ci unsigned long vaddr; 2262306a36Sopenharmony_ci unsigned long length; 2362306a36Sopenharmony_ci unsigned int npages; 2462306a36Sopenharmony_ci struct page **pages; 2562306a36Sopenharmony_ci struct tid_pageset *psets; 2662306a36Sopenharmony_ci unsigned int n_psets; 2762306a36Sopenharmony_ci}; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_cistruct tid_rb_node { 3062306a36Sopenharmony_ci struct mmu_interval_notifier notifier; 3162306a36Sopenharmony_ci struct hfi1_filedata *fdata; 3262306a36Sopenharmony_ci struct mutex invalidate_mutex; /* covers hw removal */ 3362306a36Sopenharmony_ci unsigned long phys; 3462306a36Sopenharmony_ci struct tid_group *grp; 3562306a36Sopenharmony_ci u32 rcventry; 3662306a36Sopenharmony_ci dma_addr_t dma_addr; 3762306a36Sopenharmony_ci bool freed; 3862306a36Sopenharmony_ci unsigned int npages; 3962306a36Sopenharmony_ci struct page *pages[]; 4062306a36Sopenharmony_ci}; 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_cistatic inline int num_user_pages(unsigned long addr, 4362306a36Sopenharmony_ci unsigned long len) 4462306a36Sopenharmony_ci{ 4562306a36Sopenharmony_ci const unsigned long spage = addr & PAGE_MASK; 4662306a36Sopenharmony_ci const unsigned long epage = (addr + len - 1) & PAGE_MASK; 4762306a36Sopenharmony_ci 4862306a36Sopenharmony_ci return 1 + ((epage - spage) >> PAGE_SHIFT); 4962306a36Sopenharmony_ci} 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ciint hfi1_user_exp_rcv_init(struct hfi1_filedata *fd, 5262306a36Sopenharmony_ci struct hfi1_ctxtdata *uctxt); 5362306a36Sopenharmony_civoid hfi1_user_exp_rcv_free(struct hfi1_filedata *fd); 5462306a36Sopenharmony_ciint hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd, 5562306a36Sopenharmony_ci struct hfi1_tid_info *tinfo); 5662306a36Sopenharmony_ciint hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd, 5762306a36Sopenharmony_ci struct hfi1_tid_info *tinfo); 5862306a36Sopenharmony_ciint hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd, 5962306a36Sopenharmony_ci struct hfi1_tid_info *tinfo); 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_cistatic inline struct mm_struct *mm_from_tid_node(struct tid_rb_node *node) 6262306a36Sopenharmony_ci{ 6362306a36Sopenharmony_ci return node->notifier.mm; 6462306a36Sopenharmony_ci} 6562306a36Sopenharmony_ci 6662306a36Sopenharmony_ci#endif /* _HFI1_USER_EXP_RCV_H */ 67