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93 lines
3.4 KiB
93 lines
3.4 KiB
/* |
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* Copyright (c) 2004 Topspin Corporation. All rights reserved. |
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* Copyright (c) 2005 Sun Microsystems, Inc. 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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#if !defined(IB_FMR_POOL_H) |
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#define IB_FMR_POOL_H |
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#include <rdma/ib_verbs.h> |
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struct ib_fmr_pool; |
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/** |
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* struct ib_fmr_pool_param - Parameters for creating FMR pool |
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* @max_pages_per_fmr:Maximum number of pages per map request. |
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* @page_shift: Log2 of sizeof "pages" mapped by this fmr |
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* @access:Access flags for FMRs in pool. |
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* @pool_size:Number of FMRs to allocate for pool. |
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* @dirty_watermark:Flush is triggered when @dirty_watermark dirty |
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* FMRs are present. |
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* @flush_function:Callback called when unmapped FMRs are flushed and |
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* more FMRs are possibly available for mapping |
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* @flush_arg:Context passed to user's flush function. |
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* @cache:If set, FMRs may be reused after unmapping for identical map |
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* requests. |
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*/ |
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struct ib_fmr_pool_param { |
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int max_pages_per_fmr; |
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int page_shift; |
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enum ib_access_flags access; |
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int pool_size; |
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int dirty_watermark; |
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void (*flush_function)(struct ib_fmr_pool *pool, |
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void *arg); |
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void *flush_arg; |
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unsigned cache:1; |
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}; |
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struct ib_pool_fmr { |
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struct ib_fmr *fmr; |
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struct ib_fmr_pool *pool; |
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struct list_head list; |
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struct hlist_node cache_node; |
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int ref_count; |
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int remap_count; |
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u64 io_virtual_address; |
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int page_list_len; |
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u64 page_list[0]; |
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}; |
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struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, |
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struct ib_fmr_pool_param *params); |
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void ib_destroy_fmr_pool(struct ib_fmr_pool *pool); |
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int ib_flush_fmr_pool(struct ib_fmr_pool *pool); |
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struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, |
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u64 *page_list, |
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int list_len, |
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u64 io_virtual_address); |
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int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr); |
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#endif /* IB_FMR_POOL_H */
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