1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 
 2/*
 3 * Copyright(c) 2020 - Cornelis Networks, Inc.
 4 * Copyright(c) 2015 - 2017 Intel Corporation.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef _HFI1_USER_EXP_RCV_H
 8#define _HFI1_USER_EXP_RCV_H
 9
10#include "hfi.h"
11#include "exp_rcv.h"
12
13struct tid_pageset {
14	u16 idx;
15	u16 count;
16};
17
18struct tid_user_buf {
19	struct mmu_interval_notifier notifier;
20	struct mutex cover_mutex;
21	unsigned long vaddr;
22	unsigned long length;
23	unsigned int npages;
24	struct page **pages;
25	struct tid_pageset *psets;
26	unsigned int n_psets;
27};
28
29struct tid_rb_node {
30	struct mmu_interval_notifier notifier;
31	struct hfi1_filedata *fdata;
32	struct mutex invalidate_mutex; /* covers hw removal */
33	unsigned long phys;
34	struct tid_group *grp;
35	u32 rcventry;
36	dma_addr_t dma_addr;
37	bool freed;
38	unsigned int npages;
39	struct page *pages[] __counted_by(npages);
40};
41
42static inline int num_user_pages(unsigned long addr,
43				 unsigned long len)
44{
45	const unsigned long spage = addr & PAGE_MASK;
46	const unsigned long epage = (addr + len - 1) & PAGE_MASK;
47
48	return 1 + ((epage - spage) >> PAGE_SHIFT);
49}
50
51int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd,
52			   struct hfi1_ctxtdata *uctxt);
53void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd);
54int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
55			    struct hfi1_tid_info *tinfo);
56int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd,
57			    struct hfi1_tid_info *tinfo);
58int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd,
59			      struct hfi1_tid_info *tinfo);
60
61static inline struct mm_struct *mm_from_tid_node(struct tid_rb_node *node)
62{
63	return node->notifier.mm;
64}
65
66#endif /* _HFI1_USER_EXP_RCV_H */

 1#ifndef _HFI1_USER_EXP_RCV_H
 2#define _HFI1_USER_EXP_RCV_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
 
 
 
50#include "hfi.h"
51#include "exp_rcv.h"
52
53struct tid_pageset {
54	u16 idx;
55	u16 count;
56};
57
58struct tid_user_buf {
 
 
59	unsigned long vaddr;
60	unsigned long length;
61	unsigned int npages;
62	struct page **pages;
63	struct tid_pageset *psets;
64	unsigned int n_psets;
65};
66
67struct tid_rb_node {
68	struct mmu_rb_node mmu;
 
 
69	unsigned long phys;
70	struct tid_group *grp;
71	u32 rcventry;
72	dma_addr_t dma_addr;
73	bool freed;
74	unsigned int npages;
75	struct page *pages[0];
76};
77
78static inline int num_user_pages(unsigned long addr,
79				 unsigned long len)
80{
81	const unsigned long spage = addr & PAGE_MASK;
82	const unsigned long epage = (addr + len - 1) & PAGE_MASK;
83
84	return 1 + ((epage - spage) >> PAGE_SHIFT);
85}
86
87int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd,
88			   struct hfi1_ctxtdata *uctxt);
89void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd);
90int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd,
91			    struct hfi1_tid_info *tinfo);
92int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd,
93			    struct hfi1_tid_info *tinfo);
94int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd,
95			      struct hfi1_tid_info *tinfo);
 
 
 
 
 
96
97#endif /* _HFI1_USER_EXP_RCV_H */