sw/rdmavt/mr.h

0001 /* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
0002 /*
0003  * Copyright(c) 2016 Intel Corporation.
0004  */
0005
0006 #ifndef DEF_RVTMR_H
0007 #define DEF_RVTMR_H
0008
0009 #include <rdma/rdma_vt.h>
0010
0011 struct rvt_mr {
0012     struct ib_mr ibmr;
0013     struct ib_umem *umem;
0014     struct rvt_mregion mr;  /* must be last */
0015 };
0016
0017 static inline struct rvt_mr *to_imr(struct ib_mr *ibmr)
0018 {
0019     return container_of(ibmr, struct rvt_mr, ibmr);
0020 }
0021
0022 int rvt_driver_mr_init(struct rvt_dev_info *rdi);
0023 void rvt_mr_exit(struct rvt_dev_info *rdi);
0024
0025 /* Mem Regions */
0026 struct ib_mr *rvt_get_dma_mr(struct ib_pd *pd, int acc);
0027 struct ib_mr *rvt_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
0028                   u64 virt_addr, int mr_access_flags,
0029                   struct ib_udata *udata);
0030 int rvt_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
0031 struct ib_mr *rvt_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
0032                u32 max_num_sg);
0033 int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
0034           int sg_nents, unsigned int *sg_offset);
0035
0036 #endif          /* DEF_RVTMR_H */