diff options
author | Lijun Ou <oulijun@huawei.com> | 2019-06-08 14:46:08 +0800 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2019-06-20 12:56:34 -0400 |
commit | 38389eaa4db192648916464b60f6086d6bbaa6de (patch) | |
tree | 339d25c218c05c8de155f81b4ebf8285532d52a8 /drivers/infiniband/hw/hns/hns_roce_device.h | |
parent | 696de2e9ccec812eae8c85bd24c75bcb12104750 (diff) |
RDMA/hns: Add mtr support for mixed multihop addressing
Currently, the MTT(memory translate table) design required a buffer
space must has the same hopnum, but the hip08 hw can support mixed
hopnum config in a buffer space.
This patch adds the MTR(memory translate region) design for supporting
mixed multihop.
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_device.h')
-rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_device.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 303ea7c614a8..ec2ed5cac3bc 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -341,6 +341,29 @@ struct hns_roce_mtt { enum hns_roce_mtt_type mtt_type; }; +struct hns_roce_buf_region { + int offset; /* page offset */ + u32 count; /* page count*/ + int hopnum; /* addressing hop num */ +}; + +#define HNS_ROCE_MAX_BT_REGION 3 +#define HNS_ROCE_MAX_BT_LEVEL 3 +struct hns_roce_hem_list { + struct list_head root_bt; + /* link all bt dma mem by hop config */ + struct list_head mid_bt[HNS_ROCE_MAX_BT_REGION][HNS_ROCE_MAX_BT_LEVEL]; + struct list_head btm_bt; /* link all bottom bt in @mid_bt */ + dma_addr_t root_ba; /* pointer to the root ba table */ + int bt_pg_shift; +}; + +/* memory translate region */ +struct hns_roce_mtr { + struct hns_roce_hem_list hem_list; + int buf_pg_shift; +}; + struct hns_roce_mw { struct ib_mw ibmw; u32 pdn; @@ -1111,6 +1134,19 @@ void hns_roce_mtt_cleanup(struct hns_roce_dev *hr_dev, int hns_roce_buf_write_mtt(struct hns_roce_dev *hr_dev, struct hns_roce_mtt *mtt, struct hns_roce_buf *buf); +void hns_roce_mtr_init(struct hns_roce_mtr *mtr, int bt_pg_shift, + int buf_pg_shift); +int hns_roce_mtr_attach(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, + dma_addr_t **bufs, struct hns_roce_buf_region *regions, + int region_cnt); +void hns_roce_mtr_cleanup(struct hns_roce_dev *hr_dev, + struct hns_roce_mtr *mtr); + +/* hns roce hw need current block and next block addr from mtt */ +#define MTT_MIN_COUNT 2 +int hns_roce_mtr_find(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, + int offset, u64 *mtt_buf, int mtt_max, u64 *base_addr); + int hns_roce_init_pd_table(struct hns_roce_dev *hr_dev); int hns_roce_init_mr_table(struct hns_roce_dev *hr_dev); int hns_roce_init_eq_table(struct hns_roce_dev *hr_dev); |