b5c1e0cb8d
Highlights: - Multiple verbs API updates - Support for RoCE, RDMA over ethernet All hardware drivers depending on the common infiniband stack has been updated aswell. Discussed with: np @ Sponsored by: Mellanox Technologies MFC after: 1 month
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*
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* Copyright (c) 2007 Cisco Systems. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef IB_UMEM_H
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#define IB_UMEM_H
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#include <linux/list.h>
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#include <linux/scatterlist.h>
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#include <linux/workqueue.h>
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#include <linux/dma-attrs.h>
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#include <linux/completion.h>
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#include <rdma/ib_peer_mem.h>
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struct ib_ucontext;
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struct ib_umem;
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typedef void (*umem_invalidate_func_t)(void *invalidation_cookie,
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struct ib_umem *umem,
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unsigned long addr, size_t size);
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struct invalidation_ctx {
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struct ib_umem *umem;
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umem_invalidate_func_t func;
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void *cookie;
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unsigned long context_ticket;
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int peer_callback;
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int inflight_invalidation;
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int peer_invalidated;
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struct completion comp;
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};
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struct ib_umem {
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struct ib_ucontext *context;
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size_t length;
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int offset;
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int page_size;
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int writable;
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int hugetlb;
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struct work_struct work;
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unsigned long diff;
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unsigned long start;
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struct sg_table sg_head;
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int nmap;
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int npages;
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/* peer memory that manages this umem*/
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struct ib_peer_memory_client *ib_peer_mem;
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struct invalidation_ctx *invalidation_ctx;
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int peer_mem_srcu_key;
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/* peer memory private context */
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void *peer_mem_client_context;
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};
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struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
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size_t size, int access, int dmasync);
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struct ib_umem *ib_umem_get_ex(struct ib_ucontext *context, unsigned long addr,
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size_t size, int access, int dmasync,
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int invalidation_supported);
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void ib_umem_activate_invalidation_notifier(struct ib_umem *umem,
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umem_invalidate_func_t func,
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void *cookie);
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void ib_umem_release(struct ib_umem *umem);
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int ib_umem_page_count(struct ib_umem *umem);
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#endif /* IB_UMEM_H */
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