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RDMA/hns: Add MW support for hip08 

This patch adds memory window (mw) support in the kernel space.

Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
hifive-unleashed-5.1
Yixian Liu 2018-09-23 17:20:46 +08:00 committed by Jason Gunthorpe
parent 8320deb88c
commit c7c2819140
5 changed files with 205 additions and 0 deletions
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21
drivers/infiniband/hw/hns/hns_roce_device.h
View File

@ -193,6 +193,7 @@ enum {
HNS_ROCE_CAP_FLAG_RQ_INLINE = BIT(2),
HNS_ROCE_CAP_FLAG_RECORD_DB = BIT(3),
HNS_ROCE_CAP_FLAG_SQ_RECORD_DB = BIT(4),
HNS_ROCE_CAP_FLAG_MW = BIT(7),
HNS_ROCE_CAP_FLAG_ATOMIC = BIT(10),
};
@ -286,6 +287,16 @@ struct hns_roce_mtt {
enum hns_roce_mtt_type mtt_type;
};
struct hns_roce_mw {
struct ib_mw ibmw;
u32 pdn;
u32 rkey;
int enabled; /* MW's active status */
u32 pbl_hop_num;
u32 pbl_ba_pg_sz;
u32 pbl_buf_pg_sz;
};
/* Only support 4K page size for mr register */
#define MR_SIZE_4K 0
@ -759,6 +770,7 @@ struct hns_roce_hw {
struct hns_roce_mr *mr, int flags, u32 pdn,
int mr_access_flags, u64 iova, u64 size,
void *mb_buf);
int (*mw_write_mtpt)(void *mb_buf, struct hns_roce_mw *mw);
void (*write_cqc)(struct hns_roce_dev *hr_dev,
struct hns_roce_cq *hr_cq, void *mb_buf, u64 *mtts,
dma_addr_t dma_handle, int nent, u32 vector);
@ -858,6 +870,11 @@ static inline struct hns_roce_mr *to_hr_mr(struct ib_mr *ibmr)
return container_of(ibmr, struct hns_roce_mr, ibmr);
}
static inline struct hns_roce_mw *to_hr_mw(struct ib_mw *ibmw)
{
return container_of(ibmw, struct hns_roce_mw, ibmw);
}
static inline struct hns_roce_qp *to_hr_qp(struct ib_qp *ibqp)
{
return container_of(ibqp, struct hns_roce_qp, ibqp);
@ -969,6 +986,10 @@ int hns_roce_hw2sw_mpt(struct hns_roce_dev *hr_dev,
unsigned long mpt_index);
unsigned long key_to_hw_index(u32 key);
struct ib_mw *hns_roce_alloc_mw(struct ib_pd *pd, enum ib_mw_type,
struct ib_udata *udata);
int hns_roce_dealloc_mw(struct ib_mw *ibmw);
void hns_roce_buf_free(struct hns_roce_dev *hr_dev, u32 size,
struct hns_roce_buf *buf);
int hns_roce_buf_alloc(struct hns_roce_dev *hr_dev, u32 size, u32 max_direct,

45
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
View File

@ -1259,6 +1259,10 @@ static int hns_roce_v2_profile(struct hns_roce_dev *hr_dev)
HNS_ROCE_CAP_FLAG_RQ_INLINE |
HNS_ROCE_CAP_FLAG_RECORD_DB |
HNS_ROCE_CAP_FLAG_SQ_RECORD_DB;
if (hr_dev->pci_dev->revision == 0x21)
caps->flags |= HNS_ROCE_CAP_FLAG_MW;
caps->pkey_table_len[0] = 1;
caps->gid_table_len[0] = HNS_ROCE_V2_GID_INDEX_NUM;
caps->ceqe_depth = HNS_ROCE_V2_COMP_EQE_NUM;
@ -1825,6 +1829,46 @@ static int hns_roce_v2_rereg_write_mtpt(struct hns_roce_dev *hr_dev,
return 0;
}
static int hns_roce_v2_mw_write_mtpt(void *mb_buf, struct hns_roce_mw *mw)
{
struct hns_roce_v2_mpt_entry *mpt_entry;
mpt_entry = mb_buf;
memset(mpt_entry, 0, sizeof(*mpt_entry));
roce_set_field(mpt_entry->byte_4_pd_hop_st, V2_MPT_BYTE_4_MPT_ST_M,
V2_MPT_BYTE_4_MPT_ST_S, V2_MPT_ST_FREE);
roce_set_field(mpt_entry->byte_4_pd_hop_st, V2_MPT_BYTE_4_PD_M,
V2_MPT_BYTE_4_PD_S, mw->pdn);
roce_set_field(mpt_entry->byte_4_pd_hop_st,
V2_MPT_BYTE_4_PBL_HOP_NUM_M,
V2_MPT_BYTE_4_PBL_HOP_NUM_S,
mw->pbl_hop_num == HNS_ROCE_HOP_NUM_0 ?
0 : mw->pbl_hop_num);
roce_set_field(mpt_entry->byte_4_pd_hop_st,
V2_MPT_BYTE_4_PBL_BA_PG_SZ_M,
V2_MPT_BYTE_4_PBL_BA_PG_SZ_S,
mw->pbl_ba_pg_sz + PG_SHIFT_OFFSET);
roce_set_bit(mpt_entry->byte_8_mw_cnt_en, V2_MPT_BYTE_8_R_INV_EN_S, 1);
roce_set_bit(mpt_entry->byte_8_mw_cnt_en, V2_MPT_BYTE_8_L_INV_EN_S, 1);
roce_set_bit(mpt_entry->byte_12_mw_pa, V2_MPT_BYTE_12_PA_S, 0);
roce_set_bit(mpt_entry->byte_12_mw_pa, V2_MPT_BYTE_12_MR_MW_S, 1);
roce_set_bit(mpt_entry->byte_12_mw_pa, V2_MPT_BYTE_12_BPD_S, 1);
roce_set_bit(mpt_entry->byte_12_mw_pa, V2_MPT_BYTE_12_BQP_S,
mw->ibmw.type == IB_MW_TYPE_1 ? 0 : 1);
roce_set_field(mpt_entry->byte_64_buf_pa1,
V2_MPT_BYTE_64_PBL_BUF_PG_SZ_M,
V2_MPT_BYTE_64_PBL_BUF_PG_SZ_S,
mw->pbl_buf_pg_sz + PG_SHIFT_OFFSET);
mpt_entry->lkey = cpu_to_le32(mw->rkey);
return 0;
}
static void *get_cqe_v2(struct hns_roce_cq *hr_cq, int n)
{
return hns_roce_buf_offset(&hr_cq->hr_buf.hr_buf,
@ -5175,6 +5219,7 @@ static const struct hns_roce_hw hns_roce_hw_v2 = {
.set_mac = hns_roce_v2_set_mac,
.write_mtpt = hns_roce_v2_write_mtpt,
.rereg_write_mtpt = hns_roce_v2_rereg_write_mtpt,
.mw_write_mtpt = hns_roce_v2_mw_write_mtpt,
.write_cqc = hns_roce_v2_write_cqc,
.set_hem = hns_roce_v2_set_hem,
.clear_hem = hns_roce_v2_clear_hem,

10
drivers/infiniband/hw/hns/hns_roce_hw_v2.h
View File

@ -324,6 +324,7 @@ struct hns_roce_v2_cq_context {
enum{
V2_MPT_ST_VALID = 0x1,
V2_MPT_ST_FREE = 0x2,
};
enum hns_roce_v2_qp_state {
@ -883,8 +884,17 @@ struct hns_roce_v2_mpt_entry {
#define V2_MPT_BYTE_8_LW_EN_S 7
#define V2_MPT_BYTE_8_MW_CNT_S 8
#define V2_MPT_BYTE_8_MW_CNT_M GENMASK(31, 8)
#define V2_MPT_BYTE_12_PA_S 1
#define V2_MPT_BYTE_12_MR_MW_S 4
#define V2_MPT_BYTE_12_BPD_S 5
#define V2_MPT_BYTE_12_BQP_S 6
#define V2_MPT_BYTE_12_INNER_PA_VLD_S 7
#define V2_MPT_BYTE_12_MW_BIND_QPN_S 8

9
drivers/infiniband/hw/hns/hns_roce_main.c
View File

@ -525,6 +525,15 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
ib_dev->uverbs_cmd_mask |= (1ULL << IB_USER_VERBS_CMD_REREG_MR);
}
/* MW */
if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_MW) {
ib_dev->alloc_mw = hns_roce_alloc_mw;
ib_dev->dealloc_mw = hns_roce_dealloc_mw;
ib_dev->uverbs_cmd_mask |=
(1ULL << IB_USER_VERBS_CMD_ALLOC_MW) |
(1ULL << IB_USER_VERBS_CMD_DEALLOC_MW);
}
/* OTHERS */
ib_dev->get_port_immutable = hns_roce_port_immutable;
ib_dev->disassociate_ucontext = hns_roce_disassociate_ucontext;

120
drivers/infiniband/hw/hns/hns_roce_mr.c
View File

@ -1201,3 +1201,123 @@ int hns_roce_dereg_mr(struct ib_mr *ibmr)
return ret;
}
static void hns_roce_mw_free(struct hns_roce_dev *hr_dev,
struct hns_roce_mw *mw)
{
struct device *dev = hr_dev->dev;
int ret;
if (mw->enabled) {
ret = hns_roce_hw2sw_mpt(hr_dev, NULL, key_to_hw_index(mw->rkey)
& (hr_dev->caps.num_mtpts - 1));
if (ret)
dev_warn(dev, "MW HW2SW_MPT failed (%d)\n", ret);
hns_roce_table_put(hr_dev, &hr_dev->mr_table.mtpt_table,
key_to_hw_index(mw->rkey));
}
hns_roce_bitmap_free(&hr_dev->mr_table.mtpt_bitmap,
key_to_hw_index(mw->rkey), BITMAP_NO_RR);
}
static int hns_roce_mw_enable(struct hns_roce_dev *hr_dev,
struct hns_roce_mw *mw)
{
struct hns_roce_mr_table *mr_table = &hr_dev->mr_table;
struct hns_roce_cmd_mailbox *mailbox;
struct device *dev = hr_dev->dev;
unsigned long mtpt_idx = key_to_hw_index(mw->rkey);
int ret;
/* prepare HEM entry memory */
ret = hns_roce_table_get(hr_dev, &mr_table->mtpt_table, mtpt_idx);
if (ret)
return ret;
mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
if (IS_ERR(mailbox)) {
ret = PTR_ERR(mailbox);
goto err_table;
}
ret = hr_dev->hw->mw_write_mtpt(mailbox->buf, mw);
if (ret) {
dev_err(dev, "MW write mtpt fail!\n");
goto err_page;
}
ret = hns_roce_sw2hw_mpt(hr_dev, mailbox,
mtpt_idx & (hr_dev->caps.num_mtpts - 1));
if (ret) {
dev_err(dev, "MW sw2hw_mpt failed (%d)\n", ret);
goto err_page;
}
mw->enabled = 1;
hns_roce_free_cmd_mailbox(hr_dev, mailbox);
return 0;
err_page:
hns_roce_free_cmd_mailbox(hr_dev, mailbox);
err_table:
hns_roce_table_put(hr_dev, &mr_table->mtpt_table, mtpt_idx);
return ret;
}
struct ib_mw *hns_roce_alloc_mw(struct ib_pd *ib_pd, enum ib_mw_type type,
struct ib_udata *udata)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ib_pd->device);
struct hns_roce_mw *mw;
unsigned long index = 0;
int ret;
mw = kmalloc(sizeof(*mw), GFP_KERNEL);
if (!mw)
return ERR_PTR(-ENOMEM);
/* Allocate a key for mw from bitmap */
ret = hns_roce_bitmap_alloc(&hr_dev->mr_table.mtpt_bitmap, &index);
if (ret)
goto err_bitmap;
mw->rkey = hw_index_to_key(index);
mw->ibmw.rkey = mw->rkey;
mw->ibmw.type = type;
mw->pdn = to_hr_pd(ib_pd)->pdn;
mw->pbl_hop_num = hr_dev->caps.pbl_hop_num;
mw->pbl_ba_pg_sz = hr_dev->caps.pbl_ba_pg_sz;
mw->pbl_buf_pg_sz = hr_dev->caps.pbl_buf_pg_sz;
ret = hns_roce_mw_enable(hr_dev, mw);
if (ret)
goto err_mw;
return &mw->ibmw;
err_mw:
hns_roce_mw_free(hr_dev, mw);
err_bitmap:
kfree(mw);
return ERR_PTR(ret);
}
int hns_roce_dealloc_mw(struct ib_mw *ibmw)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibmw->device);
struct hns_roce_mw *mw = to_hr_mw(ibmw);
hns_roce_mw_free(hr_dev, mw);
kfree(mw);
return 0;
}