diff options
Diffstat (limited to 'drivers/infiniband/hw/erdma/erdma_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/erdma/erdma_verbs.h | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.h b/drivers/infiniband/hw/erdma/erdma_verbs.h index abaf031fe0d2..5f639f27a8a9 100644 --- a/drivers/infiniband/hw/erdma/erdma_verbs.h +++ b/drivers/infiniband/hw/erdma/erdma_verbs.h @@ -65,7 +65,7 @@ struct erdma_pd { * MemoryRegion definition. */ #define ERDMA_MAX_INLINE_MTT_ENTRIES 4 -#define MTT_SIZE(mtt_cnt) (mtt_cnt << 3) /* per mtt entry takes 8 Bytes. */ +#define MTT_SIZE(mtt_cnt) ((mtt_cnt) << 3) /* per mtt entry takes 8 Bytes. */ #define ERDMA_MR_MAX_MTT_CNT 524288 #define ERDMA_MTT_ENTRY_SIZE 8 @@ -90,10 +90,28 @@ static inline u8 to_erdma_access_flags(int access) (access & IB_ACCESS_REMOTE_ATOMIC ? ERDMA_MR_ACC_RA : 0); } +/* Hierarchical storage structure for MTT entries */ +struct erdma_mtt { + u64 *buf; + size_t size; + + bool continuous; + union { + dma_addr_t buf_dma; + struct { + struct scatterlist *sglist; + u32 nsg; + u32 level; + }; + }; + + struct erdma_mtt *low_level; +}; + struct erdma_mem { struct ib_umem *umem; - void *mtt_buf; - u32 mtt_type; + struct erdma_mtt *mtt; + u32 page_size; u32 page_offset; u32 page_cnt; @@ -101,8 +119,6 @@ struct erdma_mem { u64 va; u64 len; - - u64 mtt_entry[ERDMA_MAX_INLINE_MTT_ENTRIES]; }; struct erdma_mr { |