diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/user_exp_rcv.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/user_exp_rcv.h | 116 |
1 files changed, 49 insertions, 67 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_exp_rcv.h b/drivers/infiniband/hw/hfi1/user_exp_rcv.h index 5250c897298d..055726f7c139 100644 --- a/drivers/infiniband/hw/hfi1/user_exp_rcv.h +++ b/drivers/infiniband/hw/hfi1/user_exp_rcv.h @@ -1,78 +1,55 @@ -#ifndef _HFI1_USER_EXP_RCV_H -#define _HFI1_USER_EXP_RCV_H +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* + * Copyright(c) 2020 - Cornelis Networks, Inc. * Copyright(c) 2015 - 2017 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * */ +#ifndef _HFI1_USER_EXP_RCV_H +#define _HFI1_USER_EXP_RCV_H + #include "hfi.h" +#include "exp_rcv.h" -#define EXP_TID_TIDLEN_MASK 0x7FFULL -#define EXP_TID_TIDLEN_SHIFT 0 -#define EXP_TID_TIDCTRL_MASK 0x3ULL -#define EXP_TID_TIDCTRL_SHIFT 20 -#define EXP_TID_TIDIDX_MASK 0x3FFULL -#define EXP_TID_TIDIDX_SHIFT 22 -#define EXP_TID_GET(tid, field) \ - (((tid) >> EXP_TID_TID##field##_SHIFT) & EXP_TID_TID##field##_MASK) +struct tid_pageset { + u16 idx; + u16 count; +}; -#define EXP_TID_SET(field, value) \ - (((value) & EXP_TID_TID##field##_MASK) << \ - EXP_TID_TID##field##_SHIFT) -#define EXP_TID_CLEAR(tid, field) ({ \ - (tid) &= ~(EXP_TID_TID##field##_MASK << \ - EXP_TID_TID##field##_SHIFT); \ - }) -#define EXP_TID_RESET(tid, field, value) do { \ - EXP_TID_CLEAR(tid, field); \ - (tid) |= EXP_TID_SET(field, (value)); \ - } while (0) +struct tid_user_buf { + struct mmu_interval_notifier notifier; + struct mutex cover_mutex; + unsigned long vaddr; + unsigned long length; + unsigned int npages; + struct page **pages; + struct tid_pageset *psets; + unsigned int n_psets; +}; -void hfi1_user_exp_rcv_grp_free(struct hfi1_ctxtdata *uctxt); -int hfi1_user_exp_rcv_grp_init(struct hfi1_filedata *fd); -int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd); +struct tid_rb_node { + struct mmu_interval_notifier notifier; + struct hfi1_filedata *fdata; + struct mutex invalidate_mutex; /* covers hw removal */ + unsigned long phys; + struct tid_group *grp; + u32 rcventry; + dma_addr_t dma_addr; + bool freed; + unsigned int npages; + struct page *pages[] __counted_by(npages); +}; + +static inline int num_user_pages(unsigned long addr, + unsigned long len) +{ + const unsigned long spage = addr & PAGE_MASK; + const unsigned long epage = (addr + len - 1) & PAGE_MASK; + + return 1 + ((epage - spage) >> PAGE_SHIFT); +} + +int hfi1_user_exp_rcv_init(struct hfi1_filedata *fd, + struct hfi1_ctxtdata *uctxt); void hfi1_user_exp_rcv_free(struct hfi1_filedata *fd); int hfi1_user_exp_rcv_setup(struct hfi1_filedata *fd, struct hfi1_tid_info *tinfo); @@ -81,4 +58,9 @@ int hfi1_user_exp_rcv_clear(struct hfi1_filedata *fd, int hfi1_user_exp_rcv_invalid(struct hfi1_filedata *fd, struct hfi1_tid_info *tinfo); +static inline struct mm_struct *mm_from_tid_node(struct tid_rb_node *node) +{ + return node->notifier.mm; +} + #endif /* _HFI1_USER_EXP_RCV_H */ |