diff options
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_mr.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_mr.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c index 81a438e5010a..072eac4b65d2 100644 --- a/drivers/infiniband/sw/rxe/rxe_mr.c +++ b/drivers/infiniband/sw/rxe/rxe_mr.c @@ -4,6 +4,8 @@ * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. */ +#include <linux/libnvdimm.h> + #include "rxe.h" #include "rxe_loc.h" @@ -192,6 +194,7 @@ int rxe_mr_init_user(struct rxe_dev *rxe, u64 start, u64 length, u64 iova, mr->offset = ib_umem_offset(umem); mr->state = RXE_MR_STATE_VALID; mr->ibmr.type = IB_MR_TYPE_USER; + mr->ibmr.page_size = PAGE_SIZE; return 0; @@ -295,6 +298,39 @@ out: return addr; } +int rxe_flush_pmem_iova(struct rxe_mr *mr, u64 iova, int length) +{ + size_t offset; + + if (length == 0) + return 0; + + if (mr->ibmr.type == IB_MR_TYPE_DMA) + return -EFAULT; + + offset = (iova - mr->ibmr.iova + mr->offset) & mr->page_mask; + while (length > 0) { + u8 *va; + int bytes; + + bytes = mr->ibmr.page_size - offset; + if (bytes > length) + bytes = length; + + va = iova_to_vaddr(mr, iova, length); + if (!va) + return -EFAULT; + + arch_wb_cache_pmem(va, bytes); + + length -= bytes; + iova += bytes; + offset = 0; + } + + return 0; +} + /* copy data from a range (vaddr, vaddr+length-1) to or from * a mr object starting at iova. */ |