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Index of /FSS-OZR/root/lib/rpm/platform/mipsel-linux
Index of /FSS-OZR/root/lib/rpm/platform/mipsel-linux
#
0 %
u9_I|+ %/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2007 Cisco Systems. All rights reserved.
* Copyright (c) 2020 Intel Corporation. All rights reserved.
*/
#ifndef IB_UMEM_H
#define IB_UMEM_H
#include
#include
#include
#include
struct ib_ucontext;
struct ib_umem_odp;
struct dma_buf_attach_ops;
struct ib_umem {
struct ib_device *ibdev;
struct mm_struct *owning_mm;
u64 iova;
size_t length;
unsigned long address;
u32 writable : 1;
u32 is_odp : 1;
u32 is_dmabuf : 1;
struct sg_append_table sgt_append;
};
struct ib_umem_dmabuf {
struct ib_umem umem;
struct dma_buf_attachment *attach;
struct sg_table *sgt;
struct scatterlist *first_sg;
struct scatterlist *last_sg;
unsigned long first_sg_offset;
unsigned long last_sg_trim;
void *private;
u8 pinned : 1;
u8 revoked : 1;
};
static inline struct ib_umem_dmabuf *to_ib_umem_dmabuf(struct ib_umem *umem)
{
return container_of(umem, struct ib_umem_dmabuf, umem);
}
/* Returns the offset of the umem start relative to the first page. */
static inline int ib_umem_offset(struct ib_umem *umem)
{
return umem->address & ~PAGE_MASK;
}
static inline dma_addr_t ib_umem_start_dma_addr(struct ib_umem *umem)
{
return sg_dma_address(umem->sgt_append.sgt.sgl) + ib_umem_offset(umem);
}
static inline unsigned long ib_umem_dma_offset(struct ib_umem *umem,
unsigned long pgsz)
{
return ib_umem_start_dma_addr(umem) & (pgsz - 1);
}
static inline size_t ib_umem_num_dma_blocks(struct ib_umem *umem,
unsigned long pgsz)
{
return (size_t)((ALIGN(umem->iova + umem->length, pgsz) -
ALIGN_DOWN(umem->iova, pgsz))) /
pgsz;
}
static inline size_t ib_umem_num_pages(struct ib_umem *umem)
{
return ib_umem_num_dma_blocks(umem, PAGE_SIZE);
}
static inline void __rdma_umem_block_iter_start(struct ib_block_iter *biter,
struct ib_umem *umem,
unsigned long pgsz)
{
__rdma_block_iter_start(biter, umem->sgt_append.sgt.sgl,
umem->sgt_append.sgt.nents, pgsz);
biter->__sg_advance = ib_umem_offset(umem) & ~(pgsz - 1);
biter->__sg_numblocks = ib_umem_num_dma_blocks(umem, pgsz);
}
static inline bool __rdma_umem_block_iter_next(struct ib_block_iter *biter)
{
return __rdma_block_iter_next(biter) && biter->__sg_numblocks--;
}
/**
* rdma_umem_for_each_dma_block - iterate over contiguous DMA blocks of the umem
* @umem: umem to iterate over
* @pgsz: Page size to split the list into
*
* pgsz must be <= PAGE_SIZE or computed by ib_umem_find_best_pgsz(). The
* returned DMA blocks will be aligned to pgsz and span the range:
* ALIGN_DOWN(umem->address, pgsz) to ALIGN(umem->address + umem->length, pgsz)
*
* Performs exactly ib_umem_num_dma_blocks() iterations.
*/
#define rdma_umem_for_each_dma_block(umem, biter, pgsz) \
for (__rdma_umem_block_iter_start(biter, umem, pgsz); \
__rdma_umem_block_iter_next(biter);)
#ifdef CONFIG_INFINIBAND_USER_MEM
struct ib_umem *ib_um