freebsd-dev/sys/ofed/include/rdma/ib_umem.h
Hans Petter Selasky b5c1e0cb8d Update the infiniband stack to Mellanox's OFED version 2.1.
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
2015-02-17 08:40:27 +00:00

94 lines
3.1 KiB
C

/*
* Copyright (c) 2007 Cisco Systems. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef IB_UMEM_H
#define IB_UMEM_H
#include <linux/list.h>
#include <linux/scatterlist.h>
#include <linux/workqueue.h>
#include <linux/dma-attrs.h>
#include <linux/completion.h>
#include <rdma/ib_peer_mem.h>
struct ib_ucontext;
struct ib_umem;
typedef void (*umem_invalidate_func_t)(void *invalidation_cookie,
struct ib_umem *umem,
unsigned long addr, size_t size);
struct invalidation_ctx {
struct ib_umem *umem;
umem_invalidate_func_t func;
void *cookie;
unsigned long context_ticket;
int peer_callback;
int inflight_invalidation;
int peer_invalidated;
struct completion comp;
};
struct ib_umem {
struct ib_ucontext *context;
size_t length;
int offset;
int page_size;
int writable;
int hugetlb;
struct work_struct work;
unsigned long diff;
unsigned long start;
struct sg_table sg_head;
int nmap;
int npages;
/* peer memory that manages this umem*/
struct ib_peer_memory_client *ib_peer_mem;
struct invalidation_ctx *invalidation_ctx;
int peer_mem_srcu_key;
/* peer memory private context */
void *peer_mem_client_context;
};
struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
size_t size, int access, int dmasync);
struct ib_umem *ib_umem_get_ex(struct ib_ucontext *context, unsigned long addr,
size_t size, int access, int dmasync,
int invalidation_supported);
void ib_umem_activate_invalidation_notifier(struct ib_umem *umem,
umem_invalidate_func_t func,
void *cookie);
void ib_umem_release(struct ib_umem *umem);
int ib_umem_page_count(struct ib_umem *umem);
#endif /* IB_UMEM_H */