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!29 [sync] PR-28: Support hns DWQE

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Merge pull request !29 from openeuler-sync-bot/sync-pr28-openEuler-22.03-LTS-Next-to-master
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openeuler-ci-bot 2022-01-13 08:52:12 +00:00 committed by Gitee
commit 23a99cbab6
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9 changed files with 938 additions and 1 deletions
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41
0001-Update-kernel-headers.patch Normal file
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@ -0,0 +1,41 @@
From 693d55e80976217215844258e5b78bc115382689 Mon Sep 17 00:00:00 2001
From: Guofeng Yue <yueguofeng@hisilicon.com>
Date: Mon, 10 Jan 2022 10:44:23 +0800
Subject: [PATCH 1/8] Update kernel headers
To commit 62c4d8878d13 ("RDMA/hns: Remove support for HIP06").
Signed-off-by: Guofeng Yue <yueguofeng@hisilicon.com>
---
kernel-headers/rdma/hns-abi.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel-headers/rdma/hns-abi.h b/kernel-headers/rdma/hns-abi.h
index 42b17765..abfd36e2 100644
--- a/kernel-headers/rdma/hns-abi.h
+++ b/kernel-headers/rdma/hns-abi.h
@@ -77,17 +77,19 @@ enum hns_roce_qp_cap_flags {
HNS_ROCE_QP_CAP_RQ_RECORD_DB = 1 << 0,
HNS_ROCE_QP_CAP_SQ_RECORD_DB = 1 << 1,
HNS_ROCE_QP_CAP_OWNER_DB = 1 << 2,
+ HNS_ROCE_QP_CAP_DIRECT_WQE = 1 << 5,
};
struct hns_roce_ib_create_qp_resp {
__aligned_u64 cap_flags;
+ __aligned_u64 dwqe_mmap_key;
};
struct hns_roce_ib_alloc_ucontext_resp {
__u32 qp_tab_size;
__u32 cqe_size;
- __u32 srq_tab_size;
- __u32 reserved;
+ __u32 srq_tab_size;
+ __u32 reserved;
};
struct hns_roce_ib_alloc_pd_resp {
--
2.33.0

120
0002-libhns-Fix-the-ownership-of-the-head-tail-pointer-of.patch Normal file
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@ -0,0 +1,120 @@
From 08ec3c43bf9710fdf3ca664f7cd63436e67339d7 Mon Sep 17 00:00:00 2001
From: Wenpeng Liang <liangwenpeng@huawei.com>
Date: Tue, 11 May 2021 19:06:34 +0800
Subject: [PATCH 2/8] libhns: Fix the ownership of the head/tail pointer of SRQ
WQE
The CQE of SRQ is not generated in the order of wqe, so the wqe_idx
corresponding to the idle WQE should be placed in a FIFO, then the hardware
will be instructed to obtain the corresponding WQE. Therefore, the WQ
of SRQ has no concept of head pointer and tail pointer, but the queue of
wqe_idx does.
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
providers/hns/hns_roce_u.h | 4 ++--
providers/hns/hns_roce_u_hw_v2.c | 12 ++++++------
providers/hns/hns_roce_u_verbs.c | 6 +++---
3 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/providers/hns/hns_roce_u.h b/providers/hns/hns_roce_u.h
index 8f805dd1..b3f48113 100644
--- a/providers/hns/hns_roce_u.h
+++ b/providers/hns/hns_roce_u.h
@@ -205,6 +205,8 @@ struct hns_roce_idx_que {
int entry_shift;
unsigned long *bitmap;
int bitmap_cnt;
+ unsigned int head;
+ unsigned int tail;
};
struct hns_roce_srq {
@@ -217,8 +219,6 @@ struct hns_roce_srq {
unsigned int max_gs;
unsigned int rsv_sge;
unsigned int wqe_shift;
- int head;
- int tail;
unsigned int *db;
unsigned short counter;
struct hns_roce_idx_que idx_que;
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index 4988943a..f947dbd7 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -262,7 +262,7 @@ static void hns_roce_free_srq_wqe(struct hns_roce_srq *srq, uint16_t ind)
bitmap_num = ind / BIT_CNT_PER_LONG;
bit_num = ind % BIT_CNT_PER_LONG;
srq->idx_que.bitmap[bitmap_num] |= (1ULL << bit_num);
- srq->tail++;
+ srq->idx_que.tail++;
pthread_spin_unlock(&srq->lock);
}
@@ -1564,7 +1564,7 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
pthread_spin_lock(&srq->lock);
/* current idx of srqwq */
- ind = srq->head & (srq->wqe_cnt - 1);
+ ind = srq->idx_que.head & (srq->wqe_cnt - 1);
max_sge = srq->max_gs - srq->rsv_sge;
for (nreq = 0; wr; ++nreq, wr = wr->next) {
@@ -1574,7 +1574,7 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
break;
}
- if (srq->head == srq->tail) {
+ if (srq->idx_que.head == srq->idx_que.tail) {
ret = -ENOMEM;
*bad_wr = wr;
break;
@@ -1607,7 +1607,7 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
}
if (nreq) {
- srq->head += nreq;
+ srq->idx_que.head += nreq;
/*
* Make sure that descriptors are written before
@@ -1617,8 +1617,8 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
srq_db.byte_4 = htole32(HNS_ROCE_V2_SRQ_DB << DB_BYTE_4_CMD_S |
srq->srqn);
- srq_db.parameter =
- htole32(srq->head & DB_PARAM_SRQ_PRODUCER_COUNTER_M);
+ srq_db.parameter = htole32(srq->idx_que.head &
+ DB_PARAM_SRQ_PRODUCER_COUNTER_M);
hns_roce_write64((uint32_t *)&srq_db, ctx,
ROCEE_VF_DB_CFG0_OFFSET);
diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index 30ab072a..9b4934b9 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -491,6 +491,9 @@ static int hns_roce_create_idx_que(struct hns_roce_srq *srq)
for (i = 0; i < idx_que->bitmap_cnt; ++i)
idx_que->bitmap[i] = ~(0UL);
+ idx_que->head = 0;
+ idx_que->tail = srq->wqe_cnt - 1;
+
return 0;
}
@@ -512,9 +515,6 @@ static int hns_roce_alloc_srq_buf(struct hns_roce_srq *srq)
return ENOMEM;
}
- srq->head = 0;
- srq->tail = srq->wqe_cnt - 1;
-
return 0;
}
--
2.33.0

180
0003-libhns-Fix-wrong-data-type-when-writing-doorbell.patch Normal file
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@ -0,0 +1,180 @@
From 9cc4c4b8d31b35428859ef626d4428fc393aace4 Mon Sep 17 00:00:00 2001
From: Lang Cheng <chenglang@huawei.com>
Date: Thu, 11 Nov 2021 21:08:35 +0800
Subject: [PATCH 3/8] libhns: Fix wrong data type when writing doorbell
The DB data is a __le32[] value instead of uint32_t[], and the DB register
should be written with a little-endian data instead of uint64_t.
Fixes: 1523fbb1ea8e ("libhns: Add verbs of cq support")
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
---
providers/hns/hns_roce_u_db.h | 14 ++++----------
providers/hns/hns_roce_u_hw_v1.c | 17 +++++++++--------
providers/hns/hns_roce_u_hw_v2.c | 23 ++++++++++++-----------
3 files changed, 25 insertions(+), 29 deletions(-)
diff --git a/providers/hns/hns_roce_u_db.h b/providers/hns/hns_roce_u_db.h
index b44e64d4..13df9b52 100644
--- a/providers/hns/hns_roce_u_db.h
+++ b/providers/hns/hns_roce_u_db.h
@@ -32,23 +32,17 @@
#include <linux/types.h>
+#include <util/mmio.h>
#include "hns_roce_u.h"
#ifndef _HNS_ROCE_U_DB_H
#define _HNS_ROCE_U_DB_H
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#define HNS_ROCE_PAIR_TO_64(val) ((uint64_t) val[1] << 32 | val[0])
-#elif __BYTE_ORDER == __BIG_ENDIAN
-#define HNS_ROCE_PAIR_TO_64(val) ((uint64_t) val[0] << 32 | val[1])
-#else
-#error __BYTE_ORDER not defined
-#endif
+#define HNS_ROCE_WORD_NUM 2
-static inline void hns_roce_write64(uint32_t val[2],
- struct hns_roce_context *ctx, int offset)
+static inline void hns_roce_write64(void *dest, __le32 val[HNS_ROCE_WORD_NUM])
{
- *(volatile uint64_t *) (ctx->uar + offset) = HNS_ROCE_PAIR_TO_64(val);
+ mmio_write64_le(dest, *(__le64 *)val);
}
void *hns_roce_alloc_db(struct hns_roce_context *ctx,
diff --git a/providers/hns/hns_roce_u_hw_v1.c b/providers/hns/hns_roce_u_hw_v1.c
index 8f0a71aa..14ee4817 100644
--- a/providers/hns/hns_roce_u_hw_v1.c
+++ b/providers/hns/hns_roce_u_hw_v1.c
@@ -65,7 +65,7 @@ static void hns_roce_update_rq_head(struct hns_roce_context *ctx,
udma_to_device_barrier();
- hns_roce_write64((uint32_t *)&rq_db, ctx, ROCEE_DB_OTHERS_L_0_REG);
+ hns_roce_write64(ctx->uar + ROCEE_DB_OTHERS_L_0_REG, (__le32 *)&rq_db);
}
static void hns_roce_update_sq_head(struct hns_roce_context *ctx,
@@ -84,7 +84,7 @@ static void hns_roce_update_sq_head(struct hns_roce_context *ctx,
udma_to_device_barrier();
- hns_roce_write64((uint32_t *)&sq_db, ctx, ROCEE_DB_SQ_L_0_REG);
+ hns_roce_write64(ctx->uar + ROCEE_DB_SQ_L_0_REG, (__le32 *)&sq_db);
}
static void hns_roce_update_cq_cons_index(struct hns_roce_context *ctx,
@@ -102,7 +102,7 @@ static void hns_roce_update_cq_cons_index(struct hns_roce_context *ctx,
CQ_DB_U32_4_CONS_IDX_S,
cq->cons_index & ((cq->cq_depth << 1) - 1));
- hns_roce_write64((uint32_t *)&cq_db, ctx, ROCEE_DB_OTHERS_L_0_REG);
+ hns_roce_write64(ctx->uar + ROCEE_DB_OTHERS_L_0_REG, (__le32 *)&cq_db);
}
static void hns_roce_handle_error_cqe(struct hns_roce_cqe *cqe,
@@ -422,10 +422,11 @@ static int hns_roce_u_v1_poll_cq(struct ibv_cq *ibvcq, int ne,
*/
static int hns_roce_u_v1_arm_cq(struct ibv_cq *ibvcq, int solicited)
{
- uint32_t ci;
- uint32_t solicited_flag;
- struct hns_roce_cq_db cq_db = {};
+ struct hns_roce_context *ctx = to_hr_ctx(ibvcq->context);
struct hns_roce_cq *cq = to_hr_cq(ibvcq);
+ struct hns_roce_cq_db cq_db = {};
+ uint32_t solicited_flag;
+ uint32_t ci;
ci = cq->cons_index & ((cq->cq_depth << 1) - 1);
solicited_flag = solicited ? HNS_ROCE_CQ_DB_REQ_SOL :
@@ -441,8 +442,8 @@ static int hns_roce_u_v1_arm_cq(struct ibv_cq *ibvcq, int solicited)
roce_set_field(cq_db.u32_4, CQ_DB_U32_4_CONS_IDX_M,
CQ_DB_U32_4_CONS_IDX_S, ci);
- hns_roce_write64((uint32_t *)&cq_db, to_hr_ctx(ibvcq->context),
- ROCEE_DB_OTHERS_L_0_REG);
+ hns_roce_write64(ctx->uar + ROCEE_DB_OTHERS_L_0_REG, (__le32 *)&cq_db);
+
return 0;
}
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index f947dbd7..efd949f4 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -293,7 +293,7 @@ static void hns_roce_update_rq_db(struct hns_roce_context *ctx,
HNS_ROCE_V2_RQ_DB);
rq_db.parameter = htole32(rq_head);
- hns_roce_write64((uint32_t *)&rq_db, ctx, ROCEE_VF_DB_CFG0_OFFSET);
+ hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&rq_db);
}
static void hns_roce_update_sq_db(struct hns_roce_context *ctx,
@@ -308,7 +308,7 @@ static void hns_roce_update_sq_db(struct hns_roce_context *ctx,
sq_db.parameter = htole32(sq_head);
roce_set_field(sq_db.parameter, DB_PARAM_SL_M, DB_PARAM_SL_S, sl);
- hns_roce_write64((uint32_t *)&sq_db, ctx, ROCEE_VF_DB_CFG0_OFFSET);
+ hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&sq_db);
}
static void hns_roce_v2_update_cq_cons_index(struct hns_roce_context *ctx,
@@ -325,7 +325,7 @@ static void hns_roce_v2_update_cq_cons_index(struct hns_roce_context *ctx,
roce_set_field(cq_db.parameter, DB_PARAM_CQ_CMD_SN_M,
DB_PARAM_CQ_CMD_SN_S, 1);
- hns_roce_write64((uint32_t *)&cq_db, ctx, ROCEE_VF_DB_CFG0_OFFSET);
+ hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&cq_db);
}
static struct hns_roce_qp *hns_roce_v2_find_qp(struct hns_roce_context *ctx,
@@ -659,11 +659,12 @@ static int hns_roce_u_v2_poll_cq(struct ibv_cq *ibvcq, int ne,
static int hns_roce_u_v2_arm_cq(struct ibv_cq *ibvcq, int solicited)
{
- uint32_t ci;
- uint32_t cmd_sn;
- uint32_t solicited_flag;
- struct hns_roce_db cq_db = {};
+ struct hns_roce_context *ctx = to_hr_ctx(ibvcq->context);
struct hns_roce_cq *cq = to_hr_cq(ibvcq);
+ struct hns_roce_db cq_db = {};
+ uint32_t solicited_flag;
+ uint32_t cmd_sn;
+ uint32_t ci;
ci = cq->cons_index & ((cq->cq_depth << 1) - 1);
cmd_sn = cq->arm_sn & HNS_ROCE_CMDSN_MASK;
@@ -681,8 +682,8 @@ static int hns_roce_u_v2_arm_cq(struct ibv_cq *ibvcq, int solicited)
DB_PARAM_CQ_CMD_SN_S, cmd_sn);
roce_set_bit(cq_db.parameter, DB_PARAM_CQ_NOTIFY_S, solicited_flag);
- hns_roce_write64((uint32_t *)&cq_db, to_hr_ctx(ibvcq->context),
- ROCEE_VF_DB_CFG0_OFFSET);
+ hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&cq_db);
+
return 0;
}
@@ -1620,8 +1621,8 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
srq_db.parameter = htole32(srq->idx_que.head &
DB_PARAM_SRQ_PRODUCER_COUNTER_M);
- hns_roce_write64((uint32_t *)&srq_db, ctx,
- ROCEE_VF_DB_CFG0_OFFSET);
+ hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET,
+ (__le32 *)&srq_db);
}
pthread_spin_unlock(&srq->lock);
--
2.33.0

43
0004-libhns-Remove-unsupported-QP-type.patch Normal file
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@ -0,0 +1,43 @@
From 60d82566fc94b11280be26733bc306e6af3d2697 Mon Sep 17 00:00:00 2001
From: Wenpeng Liang <liangwenpeng@huawei.com>
Date: Tue, 9 Nov 2021 20:40:58 +0800
Subject: [PATCH 4/8] libhns: Remove unsupported QP type
Currently, user space does not support UC type QP.
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
providers/hns/hns_roce_u_hw_v1.c | 1 -
providers/hns/hns_roce_u_hw_v2.c | 3 +--
2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/providers/hns/hns_roce_u_hw_v1.c b/providers/hns/hns_roce_u_hw_v1.c
index 14ee4817..279c9b0f 100644
--- a/providers/hns/hns_roce_u_hw_v1.c
+++ b/providers/hns/hns_roce_u_hw_v1.c
@@ -532,7 +532,6 @@ static int hns_roce_u_v1_post_send(struct ibv_qp *ibvqp, struct ibv_send_wr *wr,
ctrl->flag |= htole32(ps_opcode);
wqe += sizeof(struct hns_roce_wqe_raddr_seg);
break;
- case IBV_QPT_UC:
case IBV_QPT_UD:
default:
break;
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index efd949f4..c62f74b5 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -460,8 +460,7 @@ static int hns_roce_handle_recv_inl_wqe(struct hns_roce_v2_cqe *cqe,
struct hns_roce_qp **cur_qp,
struct ibv_wc *wc, uint32_t opcode)
{
- if (((*cur_qp)->verbs_qp.qp.qp_type == IBV_QPT_RC ||
- (*cur_qp)->verbs_qp.qp.qp_type == IBV_QPT_UC) &&
+ if (((*cur_qp)->verbs_qp.qp.qp_type == IBV_QPT_RC) &&
(opcode == HNS_ROCE_RECV_OP_SEND ||
opcode == HNS_ROCE_RECV_OP_SEND_WITH_IMM ||
opcode == HNS_ROCE_RECV_OP_SEND_WITH_INV) &&
--
2.33.0

67
0005-libhns-Avoid-using-WQE-indexes-that-exceed-the-SRQ-s.patch Normal file
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@ -0,0 +1,67 @@
From e460a4208d1821b1477e621ad5a7b72068e844f9 Mon Sep 17 00:00:00 2001
From: Wenpeng Liang <liangwenpeng@huawei.com>
Date: Tue, 11 May 2021 19:06:32 +0800
Subject: [PATCH 5/8] libhns: Avoid using WQE indexes that exceed the SRQ size
The index of SRQ WQE got from bitmap may be greater than the capability,
so a check for that should be added.
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
providers/hns/hns_roce_u_hw_v2.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index c62f74b5..1169b64b 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -1527,8 +1527,9 @@ static int hns_roce_u_v2_destroy_qp(struct ibv_qp *ibqp)
return ret;
}
-static int find_empty_entry(struct hns_roce_idx_que *idx_que)
+static int get_wqe_idx(struct hns_roce_srq *srq, int *wqe_idx)
{
+ struct hns_roce_idx_que *idx_que = &srq->idx_que;
int bit_num;
int i;
@@ -1536,12 +1537,20 @@ static int find_empty_entry(struct hns_roce_idx_que *idx_que)
for (i = 0; i < idx_que->bitmap_cnt && idx_que->bitmap[i] == 0; ++i)
;
if (i == idx_que->bitmap_cnt)
- return ENOMEM;
+ return -ENOMEM;
bit_num = ffsl(idx_que->bitmap[i]);
idx_que->bitmap[i] &= ~(1ULL << (bit_num - 1));
- return i * BIT_CNT_PER_LONG + (bit_num - 1);
+ *wqe_idx = i * BIT_CNT_PER_LONG + (bit_num - 1);
+
+ /* If wqe_cnt is less than BIT_CNT_PER_LONG, wqe_idx may be greater
+ * than wqe_cnt.
+ */
+ if (*wqe_idx >= srq->wqe_cnt)
+ return -ENOMEM;
+
+ return 0;
}
static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
@@ -1580,9 +1589,8 @@ static int hns_roce_u_v2_post_srq_recv(struct ibv_srq *ib_srq,
break;
}
- wqe_idx = find_empty_entry(&srq->idx_que);
- if (wqe_idx < 0 || wqe_idx >= srq->wqe_cnt) {
- ret = -ENOMEM;
+ ret = get_wqe_idx(srq, &wqe_idx);
+ if (ret) {
*bad_wr = wr;
break;
}
--
2.33.0

33
0006-libhns-Don-t-create-RQ-for-a-QP-that-associated-with.patch Normal file
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@ -0,0 +1,33 @@
From 91034654bdb2fd6e1fce81b4c1aea41bb4b6bf98 Mon Sep 17 00:00:00 2001
From: Wenpeng Liang <liangwenpeng@huawei.com>
Date: Tue, 11 May 2021 19:06:33 +0800
Subject: [PATCH 6/8] libhns: Don't create RQ for a QP that associated with a
SRQ
If a QP is associated with a SRQ, it's RQ should not be created.
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
---
providers/hns/hns_roce_u_verbs.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index 9b4934b9..125858d2 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -760,6 +760,11 @@ static int verify_qp_create_cap(struct hns_roce_context *ctx,
cap->max_recv_sge > ctx->max_sge)
return -EINVAL;
+ if (attr->srq) {
+ cap->max_recv_wr = 0;
+ cap->max_recv_sge = 0;
+ }
+
min_wqe_num = hr_dev->hw_version == HNS_ROCE_HW_VER1 ?
HNS_ROCE_V1_MIN_WQE_NUM : HNS_ROCE_V2_MIN_WQE_NUM;
--
2.33.0

368
0007-libhns-Add-support-for-direct-wqe.patch Normal file
View File

@ -0,0 +1,368 @@
From 64c66455fef1c908cc8f06a2b71aa2fd71806218 Mon Sep 17 00:00:00 2001
From: Yixing Liu <liuyixing1@huawei.com>
Date: Wed, 15 Dec 2021 16:42:30 +0800
Subject: [PATCH 7/8] libhns: Add support for direct wqe
The current write wqe mechanism is to write to DDR first, and then notify
the hardware through doorbell to read the data. Direct wqe is a mechanism
to fill wqe directly into the hardware. In the case of light load, the wqe
will be filled into pcie bar space of the hardware, this will reduce one
memory access operation and therefore reduce the latency. SIMD instructions
allows cpu to write the 512 bits at one time to device memory, thus it can
be used for posting direct wqe.
The process of post send of HIP08/09:
+-----------+
| post send |
+-----+-----+
|
+-----+-----+
| write WQE |
+-----+-----+
|
| udma_to_device_barrier()
|
+-----+-----+ Y +-----------+ N
| HIP09 ? +------+ multi WR ?+-------------+
+-----+-----+ +-----+-----+ |
| N | Y |
+-----+-----+ +-----+-----+ +--------+--------+
| ring DB | | ring DB | |direct WQE (ST4) |
+-----------+ +-----------+ +-----------------+
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
---
providers/hns/hns_roce_u.h | 5 +++-
providers/hns/hns_roce_u_hw_v2.c | 43 ++++++++++++++++++++++++++------
providers/hns/hns_roce_u_hw_v2.h | 31 +++++++++++++----------
providers/hns/hns_roce_u_verbs.c | 26 +++++++++++++++++--
util/mmio.h | 27 +++++++++++++++++++-
5 files changed, 107 insertions(+), 25 deletions(-)
diff --git a/providers/hns/hns_roce_u.h b/providers/hns/hns_roce_u.h
index b3f48113..37711363 100644
--- a/providers/hns/hns_roce_u.h
+++ b/providers/hns/hns_roce_u.h
@@ -80,6 +80,8 @@
#define INVALID_SGE_LENGTH 0x80000000
+#define HNS_ROCE_DWQE_PAGE_SIZE 65536
+
#define HNS_ROCE_ADDRESS_MASK 0xFFFFFFFF
#define HNS_ROCE_ADDRESS_SHIFT 32
@@ -279,13 +281,14 @@ struct hns_roce_qp {
struct hns_roce_sge_ex ex_sge;
unsigned int next_sge;
int port_num;
- int sl;
+ uint8_t sl;
unsigned int qkey;
enum ibv_mtu path_mtu;
struct hns_roce_rinl_buf rq_rinl_buf;
unsigned long flags;
int refcnt; /* specially used for XRC */
+ void *dwqe_page;
};
struct hns_roce_av {
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index 1169b64b..f102fd61 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -33,6 +33,7 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
+#include <sys/mman.h>
#include "hns_roce_u.h"
#include "hns_roce_u_db.h"
#include "hns_roce_u_hw_v2.h"
@@ -297,20 +298,40 @@ static void hns_roce_update_rq_db(struct hns_roce_context *ctx,
}
static void hns_roce_update_sq_db(struct hns_roce_context *ctx,
- unsigned int qpn, unsigned int sl,
- unsigned int sq_head)
+ struct hns_roce_qp *qp)
{
struct hns_roce_db sq_db = {};
- sq_db.byte_4 = htole32(qpn);
+ sq_db.byte_4 = htole32(qp->verbs_qp.qp.qp_num);
roce_set_field(sq_db.byte_4, DB_BYTE_4_CMD_M, DB_BYTE_4_CMD_S,
HNS_ROCE_V2_SQ_DB);
- sq_db.parameter = htole32(sq_head);
- roce_set_field(sq_db.parameter, DB_PARAM_SL_M, DB_PARAM_SL_S, sl);
+ sq_db.parameter = htole32(qp->sq.head);
+ roce_set_field(sq_db.parameter, DB_PARAM_SL_M, DB_PARAM_SL_S, qp->sl);
hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&sq_db);
}
+static void hns_roce_write512(uint64_t *dest, uint64_t *val)
+{
+ mmio_memcpy_x64(dest, val, sizeof(struct hns_roce_rc_sq_wqe));
+}
+
+static void hns_roce_write_dwqe(struct hns_roce_qp *qp, void *wqe)
+{
+ struct hns_roce_rc_sq_wqe *rc_sq_wqe = wqe;
+
+ /* All kinds of DirectWQE have the same header field layout */
+ roce_set_bit(rc_sq_wqe->byte_4, RC_SQ_WQE_BYTE_4_FLAG_S, 1);
+ roce_set_field(rc_sq_wqe->byte_4, RC_SQ_WQE_BYTE_4_DB_SL_L_M,
+ RC_SQ_WQE_BYTE_4_DB_SL_L_S, qp->sl);
+ roce_set_field(rc_sq_wqe->byte_4, RC_SQ_WQE_BYTE_4_DB_SL_H_M,
+ RC_SQ_WQE_BYTE_4_DB_SL_H_S, qp->sl >> HNS_ROCE_SL_SHIFT);
+ roce_set_field(rc_sq_wqe->byte_4, RC_SQ_WQE_BYTE_4_WQE_INDEX_M,
+ RC_SQ_WQE_BYTE_4_WQE_INDEX_S, qp->sq.head);
+
+ hns_roce_write512(qp->dwqe_page, wqe);
+}
+
static void hns_roce_v2_update_cq_cons_index(struct hns_roce_context *ctx,
struct hns_roce_cq *cq)
{
@@ -339,8 +360,7 @@ static struct hns_roce_qp *hns_roce_v2_find_qp(struct hns_roce_context *ctx,
return NULL;
}
-static void hns_roce_v2_clear_qp(struct hns_roce_context *ctx,
- struct hns_roce_qp *qp)
+void hns_roce_v2_clear_qp(struct hns_roce_context *ctx, struct hns_roce_qp *qp)
{
uint32_t qpn = qp->verbs_qp.qp.qp_num;
uint32_t tind = (qpn & (ctx->num_qps - 1)) >> ctx->qp_table_shift;
@@ -1196,6 +1216,7 @@ int hns_roce_u_v2_post_send(struct ibv_qp *ibvqp, struct ibv_send_wr *wr,
break;
case IBV_QPT_UD:
ret = set_ud_wqe(wqe, qp, wr, nreq, &sge_info);
+ qp->sl = to_hr_ah(wr->wr.ud.ah)->av.sl;
break;
default:
ret = EINVAL;
@@ -1214,7 +1235,10 @@ out:
udma_to_device_barrier();
- hns_roce_update_sq_db(ctx, ibvqp->qp_num, qp->sl, qp->sq.head);
+ if (nreq == 1 && (qp->flags & HNS_ROCE_QP_CAP_DIRECT_WQE))
+ hns_roce_write_dwqe(qp, wqe);
+ else
+ hns_roce_update_sq_db(ctx, qp);
if (qp->flags & HNS_ROCE_QP_CAP_SQ_RECORD_DB)
*(qp->sdb) = qp->sq.head & 0xffff;
@@ -1506,6 +1530,9 @@ static int hns_roce_u_v2_destroy_qp(struct ibv_qp *ibqp)
if (ret)
return ret;
+ if (qp->flags & HNS_ROCE_QP_CAP_DIRECT_WQE)
+ munmap(qp->dwqe_page, HNS_ROCE_DWQE_PAGE_SIZE);
+
hns_roce_v2_clear_qp(ctx, qp);
hns_roce_lock_cqs(ibqp);
diff --git a/providers/hns/hns_roce_u_hw_v2.h b/providers/hns/hns_roce_u_hw_v2.h
index c13d82e3..af72cd70 100644
--- a/providers/hns/hns_roce_u_hw_v2.h
+++ b/providers/hns/hns_roce_u_hw_v2.h
@@ -40,6 +40,8 @@
#define HNS_ROCE_CMDSN_MASK 0x3
+#define HNS_ROCE_SL_SHIFT 2
+
/* V2 REG DEFINITION */
#define ROCEE_VF_DB_CFG0_OFFSET 0x0230
@@ -133,6 +135,8 @@ struct hns_roce_db {
#define DB_BYTE_4_CMD_S 24
#define DB_BYTE_4_CMD_M GENMASK(27, 24)
+#define DB_BYTE_4_FLAG_S 31
+
#define DB_PARAM_SRQ_PRODUCER_COUNTER_S 0
#define DB_PARAM_SRQ_PRODUCER_COUNTER_M GENMASK(15, 0)
@@ -216,8 +220,16 @@ struct hns_roce_rc_sq_wqe {
};
#define RC_SQ_WQE_BYTE_4_OPCODE_S 0
-#define RC_SQ_WQE_BYTE_4_OPCODE_M \
- (((1UL << 5) - 1) << RC_SQ_WQE_BYTE_4_OPCODE_S)
+#define RC_SQ_WQE_BYTE_4_OPCODE_M GENMASK(4, 0)
+
+#define RC_SQ_WQE_BYTE_4_DB_SL_L_S 5
+#define RC_SQ_WQE_BYTE_4_DB_SL_L_M GENMASK(6, 5)
+
+#define RC_SQ_WQE_BYTE_4_DB_SL_H_S 13
+#define RC_SQ_WQE_BYTE_4_DB_SL_H_M GENMASK(14, 13)
+
+#define RC_SQ_WQE_BYTE_4_WQE_INDEX_S 15
+#define RC_SQ_WQE_BYTE_4_WQE_INDEX_M GENMASK(30, 15)
#define RC_SQ_WQE_BYTE_4_OWNER_S 7
@@ -239,6 +251,8 @@ struct hns_roce_rc_sq_wqe {
#define RC_SQ_WQE_BYTE_4_RDMA_WRITE_S 22
+#define RC_SQ_WQE_BYTE_4_FLAG_S 31
+
#define RC_SQ_WQE_BYTE_16_XRC_SRQN_S 0
#define RC_SQ_WQE_BYTE_16_XRC_SRQN_M \
(((1UL << 24) - 1) << RC_SQ_WQE_BYTE_16_XRC_SRQN_S)
@@ -311,23 +325,12 @@ struct hns_roce_ud_sq_wqe {
#define UD_SQ_WQE_OPCODE_S 0
#define UD_SQ_WQE_OPCODE_M GENMASK(4, 0)
-#define UD_SQ_WQE_DB_SL_L_S 5
-#define UD_SQ_WQE_DB_SL_L_M GENMASK(6, 5)
-
-#define UD_SQ_WQE_DB_SL_H_S 13
-#define UD_SQ_WQE_DB_SL_H_M GENMASK(14, 13)
-
-#define UD_SQ_WQE_INDEX_S 15
-#define UD_SQ_WQE_INDEX_M GENMASK(30, 15)
-
#define UD_SQ_WQE_OWNER_S 7
#define UD_SQ_WQE_CQE_S 8
#define UD_SQ_WQE_SE_S 11
-#define UD_SQ_WQE_FLAG_S 31
-
#define UD_SQ_WQE_PD_S 0
#define UD_SQ_WQE_PD_M GENMASK(23, 0)
@@ -376,4 +379,6 @@ struct hns_roce_ud_sq_wqe {
#define MAX_SERVICE_LEVEL 0x7
+void hns_roce_v2_clear_qp(struct hns_roce_context *ctx, struct hns_roce_qp *qp);
+
#endif /* _HNS_ROCE_U_HW_V2_H */
diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index 125858d2..fc902815 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -1076,7 +1076,8 @@ static int hns_roce_store_qp(struct hns_roce_context *ctx,
static int qp_exec_create_cmd(struct ibv_qp_init_attr_ex *attr,
struct hns_roce_qp *qp,
- struct hns_roce_context *ctx)
+ struct hns_roce_context *ctx,
+ uint64_t *dwqe_mmap_key)
{
struct hns_roce_create_qp_ex_resp resp_ex = {};
struct hns_roce_create_qp_ex cmd_ex = {};
@@ -1093,6 +1094,7 @@ static int qp_exec_create_cmd(struct ibv_qp_init_attr_ex *attr,
&resp_ex.ibv_resp, sizeof(resp_ex));
qp->flags = resp_ex.drv_payload.cap_flags;
+ *dwqe_mmap_key = resp_ex.drv_payload.dwqe_mmap_key;
return ret;
}
@@ -1144,11 +1146,23 @@ static int hns_roce_alloc_qp_buf(struct ibv_qp_init_attr_ex *attr,
return ret;
}
+static int mmap_dwqe(struct ibv_context *ibv_ctx, struct hns_roce_qp *qp,
+ uint64_t dwqe_mmap_key)
+{
+ qp->dwqe_page = mmap(NULL, HNS_ROCE_DWQE_PAGE_SIZE, PROT_WRITE,
+ MAP_SHARED, ibv_ctx->cmd_fd, dwqe_mmap_key);
+ if (qp->dwqe_page == MAP_FAILED)
+ return -EINVAL;
+
+ return 0;
+}
+
static struct ibv_qp *create_qp(struct ibv_context *ibv_ctx,
struct ibv_qp_init_attr_ex *attr)
{
struct hns_roce_context *context = to_hr_ctx(ibv_ctx);
struct hns_roce_qp *qp;
+ uint64_t dwqe_mmap_key;
int ret;
ret = verify_qp_create_attr(context, attr);
@@ -1167,7 +1181,7 @@ static struct ibv_qp *create_qp(struct ibv_context *ibv_ctx,
if (ret)
goto err_buf;
- ret = qp_exec_create_cmd(attr, qp, context);
+ ret = qp_exec_create_cmd(attr, qp, context, &dwqe_mmap_key);
if (ret)
goto err_cmd;
@@ -1175,10 +1189,18 @@ static struct ibv_qp *create_qp(struct ibv_context *ibv_ctx,
if (ret)
goto err_store;
+ if (qp->flags & HNS_ROCE_QP_CAP_DIRECT_WQE) {
+ ret = mmap_dwqe(ibv_ctx, qp, dwqe_mmap_key);
+ if (ret)
+ goto err_dwqe;
+ }
+
qp_setup_config(attr, qp, context);
return &qp->verbs_qp.qp;
+err_dwqe:
+ hns_roce_v2_clear_qp(context, qp);
err_store:
ibv_cmd_destroy_qp(&qp->verbs_qp.qp);
err_cmd:
diff --git a/util/mmio.h b/util/mmio.h
index 101af9dd..01d1455e 100644
--- a/util/mmio.h
+++ b/util/mmio.h
@@ -210,8 +210,33 @@ static inline void mmio_memcpy_x64(void *dest, const void *src, size_t bytecnt)
{
s390_mmio_write(dest, src, bytecnt);
}
-#else
+#elif defined(__aarch64__) || defined(__arm__)
+#include <arm_neon.h>
+
+static inline void _mmio_memcpy_x64_64b(void *dest, const void *src)
+{
+ vst4q_u64(dest, vld4q_u64(src));
+}
+
+static inline void _mmio_memcpy_x64(void *dest, const void *src, size_t bytecnt)
+{
+ do {
+ _mmio_memcpy_x64_64b(dest, src);
+ bytecnt -= sizeof(uint64x2x4_t);
+ src += sizeof(uint64x2x4_t);
+ } while (bytecnt > 0);
+}
+
+#define mmio_memcpy_x64(dest, src, bytecount) \
+ ({ \
+ if (__builtin_constant_p((bytecount) == 64)) \
+ _mmio_memcpy_x64_64b((dest), (src)); \
+ else \
+ _mmio_memcpy_x64((dest), (src), (bytecount)); \
+ })
+
+#else
/* Transfer is some multiple of 64 bytes */
static inline void mmio_memcpy_x64(void *dest, const void *src, size_t bytecnt)
{
--
2.33.0

70
0008-libhns-Use-new-SQ-doorbell-register-for-HIP09.patch Normal file
View File

@ -0,0 +1,70 @@
From 608c142e7cbac2a6c02071022fe87b081a6ddc4f Mon Sep 17 00:00:00 2001
From: Yixing Liu <liuyixing1@huawei.com>
Date: Tue, 21 Dec 2021 21:38:08 +0800
Subject: [PATCH 8/8] libhns: Use new SQ doorbell register for HIP09
HIP09 set a new BAR space for SQ doorbell. Each SQ doorbell has an
independent BAR space and the size is 64KB. SQ doorbell share
the same BAR space with direct WQE.
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
---
providers/hns/hns_roce_u.h | 1 +
providers/hns/hns_roce_u_hw_v2.c | 4 ++--
providers/hns/hns_roce_u_verbs.c | 5 +++++
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/providers/hns/hns_roce_u.h b/providers/hns/hns_roce_u.h
index 37711363..460363b7 100644
--- a/providers/hns/hns_roce_u.h
+++ b/providers/hns/hns_roce_u.h
@@ -238,6 +238,7 @@ struct hns_roce_wq {
unsigned int wqe_shift;
unsigned int shift; /* wq size is 2^shift */
int offset;
+ void *db_reg;
};
/* record the result of sge process */
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index f102fd61..9cbc0aac 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -308,7 +308,7 @@ static void hns_roce_update_sq_db(struct hns_roce_context *ctx,
sq_db.parameter = htole32(qp->sq.head);
roce_set_field(sq_db.parameter, DB_PARAM_SL_M, DB_PARAM_SL_S, qp->sl);
- hns_roce_write64(ctx->uar + ROCEE_VF_DB_CFG0_OFFSET, (__le32 *)&sq_db);
+ hns_roce_write64(qp->sq.db_reg, (__le32 *)&sq_db);
}
static void hns_roce_write512(uint64_t *dest, uint64_t *val)
@@ -329,7 +329,7 @@ static void hns_roce_write_dwqe(struct hns_roce_qp *qp, void *wqe)
roce_set_field(rc_sq_wqe->byte_4, RC_SQ_WQE_BYTE_4_WQE_INDEX_M,
RC_SQ_WQE_BYTE_4_WQE_INDEX_S, qp->sq.head);
- hns_roce_write512(qp->dwqe_page, wqe);
+ hns_roce_write512(qp->sq.db_reg, wqe);
}
static void hns_roce_v2_update_cq_cons_index(struct hns_roce_context *ctx,
diff --git a/providers/hns/hns_roce_u_verbs.c b/providers/hns/hns_roce_u_verbs.c
index fc902815..c5022c83 100644
--- a/providers/hns/hns_roce_u_verbs.c
+++ b/providers/hns/hns_roce_u_verbs.c
@@ -1117,6 +1117,11 @@ static void qp_setup_config(struct ibv_qp_init_attr_ex *attr,
}
qp->max_inline_data = attr->cap.max_inline_data;
+
+ if (qp->flags & HNS_ROCE_QP_CAP_DIRECT_WQE)
+ qp->sq.db_reg = qp->dwqe_page;
+ else
+ qp->sq.db_reg = ctx->uar + ROCEE_VF_DB_CFG0_OFFSET;
}
void hns_roce_free_qp_buf(struct hns_roce_qp *qp, struct hns_roce_context *ctx)
--
2.33.0

17
rdma-core.spec
View File

@ -1,11 +1,20 @@
Name: rdma-core
Version: 35.1
Release: 1
Release: 2
Summary: RDMA core userspace libraries and daemons
License: GPLv2 or BSD
Url: https://github.com/linux-rdma/rdma-core
Source: https://github.com/linux-rdma/rdma-core/releases/download/v%{version}/%{name}-%{version}.tar.gz
Patch0: backport-fixbug-increase-maximum-number-of-cpus-rdma.patch
Patch1: 0001-Update-kernel-headers.patch
Patch2: 0002-libhns-Fix-the-ownership-of-the-head-tail-pointer-of.patch
Patch3: 0003-libhns-Fix-wrong-data-type-when-writing-doorbell.patch
Patch4: 0004-libhns-Remove-unsupported-QP-type.patch
Patch5: 0005-libhns-Avoid-using-WQE-indexes-that-exceed-the-SRQ-s.patch
Patch6: 0006-libhns-Don-t-create-RQ-for-a-QP-that-associated-with.patch
Patch7: 0007-libhns-Add-support-for-direct-wqe.patch
Patch8: 0008-libhns-Use-new-SQ-doorbell-register-for-HIP09.patch
BuildRequires: binutils cmake >= 2.8.11 gcc libudev-devel pkgconfig pkgconfig(libnl-3.0)
BuildRequires: pkgconfig(libnl-route-3.0) valgrind-devel systemd systemd-devel
@ -250,6 +259,12 @@ fi
%{_mandir}/*
%changelog
* Thu Jan 10 2022 tangchengchang <tangchengchang@huawei.com> - 35.1-2
- Type: requirement
- ID: NA
- SUG: NA
- DESC: Add support for hns DWQE
* Thu Dec 09 2021 gaihuiying <gaihuiying1@huawei.com> - 35.1-1
- Type: requirement
- ID: NA