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Diffstat (limited to 'sys/contrib/rdma/ib_umem.h')
-rw-r--r-- | sys/contrib/rdma/ib_umem.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/sys/contrib/rdma/ib_umem.h b/sys/contrib/rdma/ib_umem.h deleted file mode 100644 index 9e1abbb..0000000 --- a/sys/contrib/rdma/ib_umem.h +++ /dev/null @@ -1,125 +0,0 @@ -/* - * 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> - -struct ib_ucontext; - -struct ib_umem { - struct ib_ucontext *context; - size_t length; - int offset; - int page_size; - int writable; - int hugetlb; - struct list_head chunk_list; - struct work_struct work; - struct mm_struct *mm; - unsigned long diff; -}; - -/* contiguous memory structure */ -struct ib_cmem { - - struct ib_ucontext *context; - size_t length; - /* Link list of contiguous blocks being part of that cmem */ - struct list_head ib_cmem_block; - - /* Order of cmem block, 2^ block_order will equal number - of physical pages per block - */ - unsigned long block_order; - /* Refernce counter for that memory area - - When value became 0 pages will be returned to the kernel. - */ - struct kref refcount; -}; - - -struct ib_cmem_block { - - struct list_head list; - /* page will point to the page struct of the head page - in the current compound page. - block order is saved once as part of ib_cmem. - */ - struct page *page; -}; - - - -struct ib_umem_chunk { - struct list_head list; - int nents; - int nmap; - struct dma_attrs attrs; - struct scatterlist page_list[0]; -}; - -#ifdef CONFIG_INFINIBAND_USER_MEM - -struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, - size_t size, int access, int dmasync); -void ib_umem_release(struct ib_umem *umem); -int ib_umem_page_count(struct ib_umem *umem); - -int ib_cmem_map_contiguous_pages_to_vma(struct ib_cmem *ib_cmem, - struct vm_area_struct *vma); -struct ib_cmem *ib_cmem_alloc_contiguous_pages(struct ib_ucontext *context, - unsigned long total_size, - unsigned long page_size_order); -void ib_cmem_release_contiguous_pages(struct ib_cmem *cmem); -int ib_umem_map_to_vma(struct ib_umem *umem, - struct vm_area_struct *vma); - -#else /* CONFIG_INFINIBAND_USER_MEM */ - -#include <linux/err.h> - -static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context, - unsigned long addr, size_t size, - int access, int dmasync) { - return ERR_PTR(-EINVAL); -} -static inline void ib_umem_release(struct ib_umem *umem) { } -static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; } - -#endif /* CONFIG_INFINIBAND_USER_MEM */ - -#endif /* IB_UMEM_H */ |