[PATCH for-next v2 0/4] RDMA/bnxt_re: driver update

[PATCH for-next v2 0/4] RDMA/bnxt_re: driver update

[Selvin Xavier]

Includes some generic driver updates.
Please review and apply.

Thanks,
Selvin Xavier

v1 -> v2:
	- Fix the sparse warning reported by kernel test robot
	  for the first patch
	- Fix a minor checkpatch warning in patch 2

Chandramohan Akula (1):
  RDMA/bnxt_re: Add support for CQ rx coalescing

Hongguang Gao (1):
  RDMA/ bnxt_re: Fix access flags for MR and QP modify

Kalesh AP (2):
  RDMA/bnxt_re: Add support for optimized modify QP
  RDMA/bnxt_re: Add support for modify_device hook

 drivers/infiniband/hw/bnxt_re/bnxt_re.h    |  8 ++++
 drivers/infiniband/hw/bnxt_re/ib_verbs.c   | 76 ++++++++++++++++++++++++++----
 drivers/infiniband/hw/bnxt_re/ib_verbs.h   |  3 ++
 drivers/infiniband/hw/bnxt_re/main.c       | 10 ++++
 drivers/infiniband/hw/bnxt_re/qplib_fp.c   | 60 +++++++++++++++++++++++
 drivers/infiniband/hw/bnxt_re/qplib_fp.h   | 20 ++++++++
 drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |  6 ++-
 drivers/infiniband/hw/bnxt_re/qplib_res.h  | 10 ++++
 drivers/infiniband/hw/bnxt_re/roce_hsi.h   | 17 ++++++-
 9 files changed, 199 insertions(+), 11 deletions(-)

-- 
2.5.5

[PATCH for-next v2 1/4] RDMA/bnxt_re: Add support for optimized modify QP

[Selvin Xavier]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

Modify QP improvements are for state transitions
from INIT -> RTR and RTR -> RTS.
In order to support the Modify QP Optimization feature,
the driver is expected to check for the feature support
in the CMDQ_QUERY_FUNC and register its support for this
feature with the FW in CMDQ_INITIALIZE_FIRMWARE.

Additionally, the driver is required to specify the new
fields and attribute masks for the transitions as follows:
1. INIT -> RTR:
   - New fields: srq_used, type.
   - enable srq_used when RC QP is configured to use SRQ.
   - set the type based on the QP type.
   - Mandatory masks:
     - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS,
           CMDQ_MODIFY_QP_MODIFY_MASK_PKEY
     - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_PKEY,
                      CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
2. RTR -> RTS:
   - New fields: type
   - set the type based on the QP type.
   - Mandatory masks:
     - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS
     - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_QKEY

Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Reviewed-by: Tushar Rane <tushar.rane@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/qplib_fp.c   | 40 ++++++++++++++++++++++++++++++
 drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |  6 ++++-
 drivers/infiniband/hw/bnxt_re/qplib_res.h  |  5 ++++
 drivers/infiniband/hw/bnxt_re/roce_hsi.h   |  3 +++
 4 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
index 42e98e5..ff2340c 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
@@ -1277,6 +1277,40 @@ static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
 	}
 }
 
+static void bnxt_set_mandatory_attributes(struct bnxt_qplib_qp *qp,
+					  struct cmdq_modify_qp *req)
+{
+	u32 mandatory_flags = 0;
+
+	if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC)
+		mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS;
+
+	if (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
+	    qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) {
+		if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_RC && qp->srq)
+			req->flags = cpu_to_le16(CMDQ_MODIFY_QP_FLAGS_SRQ_USED);
+		mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY;
+	}
+
+	if (qp->type == CMDQ_MODIFY_QP_QP_TYPE_UD ||
+	    qp->type == CMDQ_MODIFY_QP_QP_TYPE_GSI)
+		mandatory_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_QKEY;
+
+	qp->modify_flags |= mandatory_flags;
+	req->qp_type = qp->type;
+}
+
+static bool is_optimized_state_transition(struct bnxt_qplib_qp *qp)
+{
+	if ((qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_INIT &&
+	     qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTR) ||
+	    (qp->cur_qp_state == CMDQ_MODIFY_QP_NEW_STATE_RTR &&
+	     qp->state == CMDQ_MODIFY_QP_NEW_STATE_RTS))
+		return true;
+
+	return false;
+}
+
 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 {
 	struct bnxt_qplib_rcfw *rcfw = res->rcfw;
@@ -1293,6 +1327,12 @@ int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 
 	/* Filter out the qp_attr_mask based on the state->new transition */
 	__filter_modify_flags(qp);
+	if (qp->modify_flags & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
+		/* Set mandatory attributes for INIT -> RTR and RTR -> RTS transition */
+		if (_is_optimize_modify_qp_supported(res->dattr->dev_cap_flags2) &&
+		    is_optimized_state_transition(qp))
+			bnxt_set_mandatory_attributes(qp, &req);
+	}
 	bmask = qp->modify_flags;
 	req.modify_mask = cpu_to_le32(qp->modify_flags);
 	req.qp_cid = cpu_to_le32(qp->id);
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
index 3ffaef0c..f5713e3 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c
@@ -832,6 +832,7 @@ int bnxt_qplib_init_rcfw(struct bnxt_qplib_rcfw *rcfw,
 	struct creq_initialize_fw_resp resp = {};
 	struct cmdq_initialize_fw req = {};
 	struct bnxt_qplib_cmdqmsg msg = {};
+	u16 flags = 0;
 	u8 pgsz, lvl;
 	int rc;
 
@@ -906,7 +907,10 @@ int bnxt_qplib_init_rcfw(struct bnxt_qplib_rcfw *rcfw,
 
 skip_ctx_setup:
 	if (BNXT_RE_HW_RETX(rcfw->res->dattr->dev_cap_flags))
-		req.flags |= cpu_to_le16(CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED);
+		flags |= CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED;
+	if (_is_optimize_modify_qp_supported(rcfw->res->dattr->dev_cap_flags2))
+		flags |= CMDQ_INITIALIZE_FW_FLAGS_OPTIMIZE_MODIFY_QP_SUPPORTED;
+	req.flags |= cpu_to_le16(flags);
 	req.stat_ctx_id = cpu_to_le32(ctx->stats.fw_id);
 	bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
 	rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index c2f7103..ef198a6 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -576,4 +576,9 @@ static inline bool _is_relaxed_ordering_supported(u16 dev_cap_ext_flags2)
 	return dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_MEMORY_REGION_RO_SUPPORTED;
 }
 
+static inline bool _is_optimize_modify_qp_supported(u16 dev_cap_ext_flags2)
+{
+	return dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_OPTIMIZE_MODIFY_QP_SUPPORTED;
+}
+
 #endif /* __BNXT_QPLIB_RES_H__ */
diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
index 3ec8952..69d50d7 100644
--- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h
+++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
@@ -216,6 +216,8 @@ struct cmdq_initialize_fw {
 	__le16	flags;
 	#define CMDQ_INITIALIZE_FW_FLAGS_MRAV_RESERVATION_SPLIT          0x1UL
 	#define CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED     0x2UL
+	#define CMDQ_INITIALIZE_FW_FLAGS_DRV_VERSION                     0x4UL
+	#define CMDQ_INITIALIZE_FW_FLAGS_OPTIMIZE_MODIFY_QP_SUPPORTED    0x8UL
 	__le16	cookie;
 	u8	resp_size;
 	u8	reserved8;
@@ -559,6 +561,7 @@ struct cmdq_modify_qp {
 	#define CMDQ_MODIFY_QP_OPCODE_LAST     CMDQ_MODIFY_QP_OPCODE_MODIFY_QP
 	u8	cmd_size;
 	__le16	flags;
+	 #define CMDQ_MODIFY_QP_FLAGS_SRQ_USED       0x1UL
 	__le16	cookie;
 	u8	resp_size;
 	u8	qp_type;
-- 
2.5.5

[PATCH for-next v2 2/4] RDMA/bnxt_re: Add support for CQ rx coalescing

[Selvin Xavier]

From: Chandramohan Akula <chandramohan.akula@broadcom.com>

RoCE message rate performance is heavily degraded
without the use of cq coalescing. With proper coalescing,
message rates get better. Furthermore, coalescing
significantly reduces contention on the PCIe Root
Complex/Memory subsystems.

Add the changes to configure CQ rx colascing parameters
based on adapter revision when CQ is created.

Signed-off-by: Chandramohan Akula <chandramohan.akula@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/bnxt_re.h   |  8 ++++++++
 drivers/infiniband/hw/bnxt_re/ib_verbs.c  |  1 +
 drivers/infiniband/hw/bnxt_re/main.c      |  9 +++++++++
 drivers/infiniband/hw/bnxt_re/qplib_fp.c  | 20 ++++++++++++++++++++
 drivers/infiniband/hw/bnxt_re/qplib_fp.h  | 20 ++++++++++++++++++++
 drivers/infiniband/hw/bnxt_re/qplib_res.h |  5 +++++
 drivers/infiniband/hw/bnxt_re/roce_hsi.h  | 14 +++++++++++++-
 7 files changed, 76 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
index e94518b..bb28a1f 100644
--- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h
+++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h
@@ -156,6 +156,13 @@ struct bnxt_re_pacing {
 
 #define MAX_CQ_HASH_BITS		(16)
 #define MAX_SRQ_HASH_BITS		(16)
+
+static inline bool bnxt_re_chip_gen_p7(u16 chip_num)
+{
+	return (chip_num == CHIP_NUM_58818 ||
+		chip_num == CHIP_NUM_57608);
+}
+
 struct bnxt_re_dev {
 	struct ib_device		ibdev;
 	struct list_head		list;
@@ -195,6 +202,7 @@ struct bnxt_re_dev {
 	struct bnxt_qplib_ctx		qplib_ctx;
 	struct bnxt_qplib_res		qplib_res;
 	struct bnxt_qplib_dpi		dpi_privileged;
+	struct bnxt_qplib_cq_coal_param	cq_coalescing;
 
 	struct mutex			qp_lock;	/* protect qp list */
 	struct list_head		qp_list;
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 460f339..55a3cc8 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -3065,6 +3065,7 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	cq->qplib_cq.max_wqe = entries;
 	cq->qplib_cq.cnq_hw_ring_id = nq->ring_id;
 	cq->qplib_cq.nq	= nq;
+	cq->qplib_cq.coalescing = &rdev->cq_coalescing;
 
 	rc = bnxt_qplib_create_cq(&rdev->qplib_res, &cq->qplib_cq);
 	if (rc) {
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 777068d..3a01818 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -986,6 +986,15 @@ static struct bnxt_re_dev *bnxt_re_dev_add(struct bnxt_aux_priv *aux_priv,
 	atomic_set(&rdev->stats.res.pd_count, 0);
 	rdev->cosq[0] = 0xFFFF;
 	rdev->cosq[1] = 0xFFFF;
+	rdev->cq_coalescing.buf_maxtime = BNXT_QPLIB_CQ_COAL_DEF_BUF_MAXTIME;
+	if (bnxt_re_chip_gen_p7(en_dev->chip_num)) {
+		rdev->cq_coalescing.normal_maxbuf = BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P7;
+		rdev->cq_coalescing.during_maxbuf = BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P7;
+	} else {
+		rdev->cq_coalescing.normal_maxbuf = BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P5;
+		rdev->cq_coalescing.during_maxbuf = BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P5;
+	}
+	rdev->cq_coalescing.en_ring_idle_mode = BNXT_QPLIB_CQ_COAL_DEF_EN_RING_IDLE_MODE;
 
 	return rdev;
 }
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
index ff2340c..e2eea71 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c
@@ -2182,6 +2182,7 @@ int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
 	struct bnxt_qplib_cmdqmsg msg = {};
 	struct cmdq_create_cq req = {};
 	struct bnxt_qplib_pbl *pbl;
+	u32 coalescing = 0;
 	u32 pg_sz_lvl;
 	int rc;
 
@@ -2208,6 +2209,25 @@ int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
 	req.dpi = cpu_to_le32(cq->dpi->dpi);
 	req.cq_handle = cpu_to_le64(cq->cq_handle);
 	req.cq_size = cpu_to_le32(cq->max_wqe);
+
+	if (_is_cq_coalescing_supported(res->dattr->dev_cap_flags2)) {
+		req.flags |= cpu_to_le16(CMDQ_CREATE_CQ_FLAGS_COALESCING_VALID);
+		coalescing |= ((cq->coalescing->buf_maxtime <<
+				CMDQ_CREATE_CQ_BUF_MAXTIME_SFT) &
+			       CMDQ_CREATE_CQ_BUF_MAXTIME_MASK);
+		coalescing |= ((cq->coalescing->normal_maxbuf <<
+				CMDQ_CREATE_CQ_NORMAL_MAXBUF_SFT) &
+			       CMDQ_CREATE_CQ_NORMAL_MAXBUF_MASK);
+		coalescing |= ((cq->coalescing->during_maxbuf <<
+				CMDQ_CREATE_CQ_DURING_MAXBUF_SFT) &
+			       CMDQ_CREATE_CQ_DURING_MAXBUF_MASK);
+		if (cq->coalescing->en_ring_idle_mode)
+			coalescing |= CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
+		else
+			coalescing &= ~CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE;
+		req.coalescing = cpu_to_le32(coalescing);
+	}
+
 	pbl = &cq->hwq.pbl[PBL_LVL_0];
 	pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
 		     CMDQ_CREATE_CQ_PG_SIZE_SFT);
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
index b62df87..fb01576 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h
@@ -383,6 +383,25 @@ static inline bool bnxt_qplib_queue_full(struct bnxt_qplib_q *que,
 	return avail <= slots;
 }
 
+/* CQ coalescing parameters */
+struct bnxt_qplib_cq_coal_param {
+	u16 buf_maxtime;
+	u8 normal_maxbuf;
+	u8 during_maxbuf;
+	u8 en_ring_idle_mode;
+};
+
+#define BNXT_QPLIB_CQ_COAL_DEF_BUF_MAXTIME		0x1
+#define BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P7		0x8
+#define BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P7		0x8
+#define BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P5		0x1
+#define BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P5		0x1
+#define BNXT_QPLIB_CQ_COAL_DEF_EN_RING_IDLE_MODE	0x1
+#define BNXT_QPLIB_CQ_COAL_MAX_BUF_MAXTIME		0x1bf
+#define BNXT_QPLIB_CQ_COAL_MAX_NORMAL_MAXBUF		0x1f
+#define BNXT_QPLIB_CQ_COAL_MAX_DURING_MAXBUF		0x1f
+#define BNXT_QPLIB_CQ_COAL_MAX_EN_RING_IDLE_MODE	0x1
+
 struct bnxt_qplib_cqe {
 	u8				status;
 	u8				type;
@@ -445,6 +464,7 @@ struct bnxt_qplib_cq {
  */
 	spinlock_t			flush_lock; /* QP flush management */
 	u16				cnq_events;
+	struct bnxt_qplib_cq_coal_param	*coalescing;
 };
 
 #define BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE	sizeof(struct xrrq_irrq)
diff --git a/drivers/infiniband/hw/bnxt_re/qplib_res.h b/drivers/infiniband/hw/bnxt_re/qplib_res.h
index ef198a6..115910c 100644
--- a/drivers/infiniband/hw/bnxt_re/qplib_res.h
+++ b/drivers/infiniband/hw/bnxt_re/qplib_res.h
@@ -581,4 +581,9 @@ static inline bool _is_optimize_modify_qp_supported(u16 dev_cap_ext_flags2)
 	return dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_OPTIMIZE_MODIFY_QP_SUPPORTED;
 }
 
+static inline bool _is_cq_coalescing_supported(u16 dev_cap_ext_flags2)
+{
+	return dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_CQ_COALESCING_SUPPORTED;
+}
+
 #endif /* __BNXT_QPLIB_RES_H__ */
diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
index 69d50d7..58df876 100644
--- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h
+++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
@@ -1140,6 +1140,7 @@ struct cmdq_create_cq {
 	#define CMDQ_CREATE_CQ_FLAGS_DISABLE_CQ_OVERFLOW_DETECTION     0x1UL
 	#define CMDQ_CREATE_CQ_FLAGS_STEERING_TAG_VALID                0x2UL
 	#define CMDQ_CREATE_CQ_FLAGS_INFINITE_CQ_MODE                  0x4UL
+	#define CMDQ_CREATE_CQ_FLAGS_COALESCING_VALID                  0x8UL
 	__le16	cookie;
 	u8	resp_size;
 	u8	reserved8;
@@ -1172,7 +1173,18 @@ struct cmdq_create_cq {
 	__le32	cq_size;
 	__le64	pbl;
 	__le16	steering_tag;
-	u8	reserved48[6];
+	u8	reserved48[2];
+	__le32  coalescing;
+	#define CMDQ_CREATE_CQ_BUF_MAXTIME_MASK          0x1ffUL
+	#define CMDQ_CREATE_CQ_BUF_MAXTIME_SFT           0
+	#define CMDQ_CREATE_CQ_NORMAL_MAXBUF_MASK        0x3e00UL
+	#define CMDQ_CREATE_CQ_NORMAL_MAXBUF_SFT         9
+	#define CMDQ_CREATE_CQ_DURING_MAXBUF_MASK        0x7c000UL
+	#define CMDQ_CREATE_CQ_DURING_MAXBUF_SFT         14
+	#define CMDQ_CREATE_CQ_ENABLE_RING_IDLE_MODE     0x80000UL
+	#define CMDQ_CREATE_CQ_UNUSED12_MASK             0xfff00000UL
+	#define CMDQ_CREATE_CQ_UNUSED12_SFT              20
+	__le64  reserved64;
 };
 
 /* creq_create_cq_resp (size:128b/16B) */
-- 
2.5.5

[PATCH for-next v2 3/4] RDMA/bnxt_re: Add support for modify_device hook

[Selvin Xavier]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

Adds support for modify_device in the driver
for node desc changes.

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/ib_verbs.c | 16 ++++++++++++++++
 drivers/infiniband/hw/bnxt_re/ib_verbs.h |  3 +++
 drivers/infiniband/hw/bnxt_re/main.c     |  1 +
 3 files changed, 20 insertions(+)

diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 55a3cc8..2a21a90 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -211,6 +211,22 @@ int bnxt_re_query_device(struct ib_device *ibdev,
 	return 0;
 }
 
+int bnxt_re_modify_device(struct ib_device *ibdev,
+			  int device_modify_mask,
+			  struct ib_device_modify *device_modify)
+{
+	ibdev_dbg(ibdev, "Modify device with mask 0x%x", device_modify_mask);
+
+	if (device_modify_mask & ~IB_DEVICE_MODIFY_NODE_DESC)
+		return -EOPNOTSUPP;
+
+	if (!(device_modify_mask & IB_DEVICE_MODIFY_NODE_DESC))
+		return 0;
+
+	memcpy(ibdev->node_desc, device_modify->node_desc, IB_DEVICE_NODE_DESC_MAX);
+	return 0;
+}
+
 /* Port */
 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
 		       struct ib_port_attr *port_attr)
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.h b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
index b789e47..83a584e 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.h
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.h
@@ -196,6 +196,9 @@ static inline bool bnxt_re_is_var_size_supported(struct bnxt_re_dev *rdev,
 int bnxt_re_query_device(struct ib_device *ibdev,
 			 struct ib_device_attr *ib_attr,
 			 struct ib_udata *udata);
+int bnxt_re_modify_device(struct ib_device *ibdev,
+			  int device_modify_mask,
+			  struct ib_device_modify *device_modify);
 int bnxt_re_query_port(struct ib_device *ibdev, u32 port_num,
 		       struct ib_port_attr *port_attr);
 int bnxt_re_get_port_immutable(struct ib_device *ibdev, u32 port_num,
diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index 3a01818..d825eda 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -911,6 +911,7 @@ static const struct ib_device_ops bnxt_re_dev_ops = {
 	.post_srq_recv = bnxt_re_post_srq_recv,
 	.query_ah = bnxt_re_query_ah,
 	.query_device = bnxt_re_query_device,
+	.modify_device = bnxt_re_modify_device,
 	.query_pkey = bnxt_re_query_pkey,
 	.query_port = bnxt_re_query_port,
 	.query_qp = bnxt_re_query_qp,
-- 
2.5.5

[PATCH for-next v2 4/4] RDMA/ bnxt_re: Fix access flags for MR and QP modify

[Selvin Xavier]

From: Hongguang Gao <hongguang.gao@broadcom.com>

Access flag definition in MR and QP is different
in FW. Currently both reg/bind MR and modify/query QP uses
the same flags. Add a different function to map
the QP access flags for newer adapters.

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Hongguang Gao <hongguang.gao@broadcom.com>
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
---
 drivers/infiniband/hw/bnxt_re/ib_verbs.c | 59 +++++++++++++++++++++++++++-----
 1 file changed, 50 insertions(+), 9 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 2a21a90..5008c28 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -94,9 +94,9 @@ static int __from_ib_access_flags(int iflags)
 	return qflags;
 };
 
-static enum ib_access_flags __to_ib_access_flags(int qflags)
+static int __to_ib_access_flags(int qflags)
 {
-	enum ib_access_flags iflags = 0;
+	int iflags = 0;
 
 	if (qflags & BNXT_QPLIB_ACCESS_LOCAL_WRITE)
 		iflags |= IB_ACCESS_LOCAL_WRITE;
@@ -113,7 +113,49 @@ static enum ib_access_flags __to_ib_access_flags(int qflags)
 	if (qflags & BNXT_QPLIB_ACCESS_ON_DEMAND)
 		iflags |= IB_ACCESS_ON_DEMAND;
 	return iflags;
-};
+}
+
+static u8 __qp_access_flags_from_ib(struct bnxt_qplib_chip_ctx *cctx, int iflags)
+{
+	u8 qflags = 0;
+
+	if (!bnxt_qplib_is_chip_gen_p5_p7(cctx))
+		/* For Wh+ */
+		return (u8)__from_ib_access_flags(iflags);
+
+	/* For P5, P7 and later chips */
+	if (iflags & IB_ACCESS_LOCAL_WRITE)
+		qflags |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE;
+	if (iflags & IB_ACCESS_REMOTE_WRITE)
+		qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE;
+	if (iflags & IB_ACCESS_REMOTE_READ)
+		qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_READ;
+	if (iflags & IB_ACCESS_REMOTE_ATOMIC)
+		qflags |= CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC;
+
+	return qflags;
+}
+
+static int __qp_access_flags_to_ib(struct bnxt_qplib_chip_ctx *cctx, u8 qflags)
+{
+	int iflags = 0;
+
+	if (!bnxt_qplib_is_chip_gen_p5_p7(cctx))
+		/* For Wh+ */
+		return __to_ib_access_flags(qflags);
+
+	/* For P5, P7 and later chips */
+	if (qflags & CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE)
+		iflags |= IB_ACCESS_LOCAL_WRITE;
+	if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE)
+		iflags |= IB_ACCESS_REMOTE_WRITE;
+	if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_READ)
+		iflags |= IB_ACCESS_REMOTE_READ;
+	if (qflags & CMDQ_MODIFY_QP_ACCESS_REMOTE_ATOMIC)
+		iflags |= IB_ACCESS_REMOTE_ATOMIC;
+
+	return iflags;
+}
 
 static void bnxt_re_check_and_set_relaxed_ordering(struct bnxt_re_dev *rdev,
 						   struct bnxt_qplib_mrw *qplib_mr)
@@ -2053,12 +2095,10 @@ int bnxt_re_modify_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 	if (qp_attr_mask & IB_QP_ACCESS_FLAGS) {
 		qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS;
 		qp->qplib_qp.access =
-			__from_ib_access_flags(qp_attr->qp_access_flags);
+			__qp_access_flags_from_ib(qp->qplib_qp.cctx,
+						  qp_attr->qp_access_flags);
 		/* LOCAL_WRITE access must be set to allow RC receive */
-		qp->qplib_qp.access |= BNXT_QPLIB_ACCESS_LOCAL_WRITE;
-		/* Temp: Set all params on QP as of now */
-		qp->qplib_qp.access |= CMDQ_MODIFY_QP_ACCESS_REMOTE_WRITE;
-		qp->qplib_qp.access |= CMDQ_MODIFY_QP_ACCESS_REMOTE_READ;
+		qp->qplib_qp.access |= CMDQ_MODIFY_QP_ACCESS_LOCAL_WRITE;
 	}
 	if (qp_attr_mask & IB_QP_PKEY_INDEX) {
 		qp->qplib_qp.modify_flags |= CMDQ_MODIFY_QP_MODIFY_MASK_PKEY;
@@ -2263,7 +2303,8 @@ int bnxt_re_query_qp(struct ib_qp *ib_qp, struct ib_qp_attr *qp_attr,
 	qp_attr->qp_state = __to_ib_qp_state(qplib_qp->state);
 	qp_attr->cur_qp_state = __to_ib_qp_state(qplib_qp->cur_qp_state);
 	qp_attr->en_sqd_async_notify = qplib_qp->en_sqd_async_notify ? 1 : 0;
-	qp_attr->qp_access_flags = __to_ib_access_flags(qplib_qp->access);
+	qp_attr->qp_access_flags = __qp_access_flags_to_ib(qplib_qp->cctx,
+							   qplib_qp->access);
 	qp_attr->pkey_index = qplib_qp->pkey_index;
 	qp_attr->qkey = qplib_qp->qkey;
 	qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE;
-- 
2.5.5

Re: [PATCH for-next v2 1/4] RDMA/bnxt_re: Add support for optimized modify QP

[Leon Romanovsky]

On Mon, Oct 14, 2024 at 10:55:58AM -0700, Selvin Xavier wrote:
> From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> 
> Modify QP improvements are for state transitions
> from INIT -> RTR and RTR -> RTS.
> In order to support the Modify QP Optimization feature,
> the driver is expected to check for the feature support
> in the CMDQ_QUERY_FUNC and register its support for this
> feature with the FW in CMDQ_INITIALIZE_FIRMWARE.
> 
> Additionally, the driver is required to specify the new
> fields and attribute masks for the transitions as follows:
> 1. INIT -> RTR:
>    - New fields: srq_used, type.
>    - enable srq_used when RC QP is configured to use SRQ.
>    - set the type based on the QP type.
>    - Mandatory masks:
>      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS,
>            CMDQ_MODIFY_QP_MODIFY_MASK_PKEY
>      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_PKEY,
>                       CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> 2. RTR -> RTS:
>    - New fields: type
>    - set the type based on the QP type.
>    - Mandatory masks:
>      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS
>      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> 
> Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
> Reviewed-by: Tushar Rane <tushar.rane@broadcom.com>
> Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
> ---
>  drivers/infiniband/hw/bnxt_re/qplib_fp.c   | 40 ++++++++++++++++++++++++++++++
>  drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |  6 ++++-
>  drivers/infiniband/hw/bnxt_re/qplib_res.h  |  5 ++++
>  drivers/infiniband/hw/bnxt_re/roce_hsi.h   |  3 +++
>  4 files changed, 53 insertions(+), 1 deletion(-)

<...>

> diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> index 3ec8952..69d50d7 100644
> --- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> +++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> @@ -216,6 +216,8 @@ struct cmdq_initialize_fw {
>  	__le16	flags;
>  	#define CMDQ_INITIALIZE_FW_FLAGS_MRAV_RESERVATION_SPLIT          0x1UL
>  	#define CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED     0x2UL
> +	#define CMDQ_INITIALIZE_FW_FLAGS_DRV_VERSION                     0x4UL

Where is this define used?

> +	#define CMDQ_INITIALIZE_FW_FLAGS_OPTIMIZE_MODIFY_QP_SUPPORTED    0x8UL

Thanks

Re: [PATCH for-next v2 1/4] RDMA/bnxt_re: Add support for optimized modify QP

[Selvin Xavier]

[-- Attachment #1: Type: text/plain, Size: 2913 bytes --]

On Mon, Oct 28, 2024 at 5:29 PM Leon Romanovsky <leon@kernel.org> wrote:
>
> On Mon, Oct 14, 2024 at 10:55:58AM -0700, Selvin Xavier wrote:
> > From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> >
> > Modify QP improvements are for state transitions
> > from INIT -> RTR and RTR -> RTS.
> > In order to support the Modify QP Optimization feature,
> > the driver is expected to check for the feature support
> > in the CMDQ_QUERY_FUNC and register its support for this
> > feature with the FW in CMDQ_INITIALIZE_FIRMWARE.
> >
> > Additionally, the driver is required to specify the new
> > fields and attribute masks for the transitions as follows:
> > 1. INIT -> RTR:
> >    - New fields: srq_used, type.
> >    - enable srq_used when RC QP is configured to use SRQ.
> >    - set the type based on the QP type.
> >    - Mandatory masks:
> >      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS,
> >            CMDQ_MODIFY_QP_MODIFY_MASK_PKEY
> >      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_PKEY,
> >                       CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> > 2. RTR -> RTS:
> >    - New fields: type
> >    - set the type based on the QP type.
> >    - Mandatory masks:
> >      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS
> >      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> >
> > Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
> > Reviewed-by: Tushar Rane <tushar.rane@broadcom.com>
> > Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> > Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
> > ---
> >  drivers/infiniband/hw/bnxt_re/qplib_fp.c   | 40 ++++++++++++++++++++++++++++++
> >  drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |  6 ++++-
> >  drivers/infiniband/hw/bnxt_re/qplib_res.h  |  5 ++++
> >  drivers/infiniband/hw/bnxt_re/roce_hsi.h   |  3 +++
> >  4 files changed, 53 insertions(+), 1 deletion(-)
>
> <...>
>
> > diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > index 3ec8952..69d50d7 100644
> > --- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > +++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > @@ -216,6 +216,8 @@ struct cmdq_initialize_fw {
> >       __le16  flags;
> >       #define CMDQ_INITIALIZE_FW_FLAGS_MRAV_RESERVATION_SPLIT          0x1UL
> >       #define CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED     0x2UL
> > +     #define CMDQ_INITIALIZE_FW_FLAGS_DRV_VERSION                     0x4UL
>
> Where is this define used?
We are not using this field now. This is structure fields are copied
from an autogenerated file. Since we updated this structure, we have
copied all update to that structure. The value we
are currently interested in is 0x8UL.

Do you want me to repost the series after removing the above define?
>
> > +     #define CMDQ_INITIALIZE_FW_FLAGS_OPTIMIZE_MODIFY_QP_SUPPORTED    0x8UL
>
> Thanks

[-- Attachment #2: S/MIME Cryptographic Signature --]
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Re: [PATCH for-next v2 1/4] RDMA/bnxt_re: Add support for optimized modify QP

[Leon Romanovsky]

On Mon, Oct 28, 2024 at 10:20:00PM +0530, Selvin Xavier wrote:
> On Mon, Oct 28, 2024 at 5:29 PM Leon Romanovsky <leon@kernel.org> wrote:
> >
> > On Mon, Oct 14, 2024 at 10:55:58AM -0700, Selvin Xavier wrote:
> > > From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> > >
> > > Modify QP improvements are for state transitions
> > > from INIT -> RTR and RTR -> RTS.
> > > In order to support the Modify QP Optimization feature,
> > > the driver is expected to check for the feature support
> > > in the CMDQ_QUERY_FUNC and register its support for this
> > > feature with the FW in CMDQ_INITIALIZE_FIRMWARE.
> > >
> > > Additionally, the driver is required to specify the new
> > > fields and attribute masks for the transitions as follows:
> > > 1. INIT -> RTR:
> > >    - New fields: srq_used, type.
> > >    - enable srq_used when RC QP is configured to use SRQ.
> > >    - set the type based on the QP type.
> > >    - Mandatory masks:
> > >      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS,
> > >            CMDQ_MODIFY_QP_MODIFY_MASK_PKEY
> > >      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_PKEY,
> > >                       CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> > > 2. RTR -> RTS:
> > >    - New fields: type
> > >    - set the type based on the QP type.
> > >    - Mandatory masks:
> > >      - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS
> > >      - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
> > >
> > > Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
> > > Reviewed-by: Tushar Rane <tushar.rane@broadcom.com>
> > > Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> > > Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
> > > ---
> > >  drivers/infiniband/hw/bnxt_re/qplib_fp.c   | 40 ++++++++++++++++++++++++++++++
> > >  drivers/infiniband/hw/bnxt_re/qplib_rcfw.c |  6 ++++-
> > >  drivers/infiniband/hw/bnxt_re/qplib_res.h  |  5 ++++
> > >  drivers/infiniband/hw/bnxt_re/roce_hsi.h   |  3 +++
> > >  4 files changed, 53 insertions(+), 1 deletion(-)
> >
> > <...>
> >
> > > diff --git a/drivers/infiniband/hw/bnxt_re/roce_hsi.h b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > > index 3ec8952..69d50d7 100644
> > > --- a/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > > +++ b/drivers/infiniband/hw/bnxt_re/roce_hsi.h
> > > @@ -216,6 +216,8 @@ struct cmdq_initialize_fw {
> > >       __le16  flags;
> > >       #define CMDQ_INITIALIZE_FW_FLAGS_MRAV_RESERVATION_SPLIT          0x1UL
> > >       #define CMDQ_INITIALIZE_FW_FLAGS_HW_REQUESTER_RETX_SUPPORTED     0x2UL
> > > +     #define CMDQ_INITIALIZE_FW_FLAGS_DRV_VERSION                     0x4UL
> >
> > Where is this define used?
> We are not using this field now. This is structure fields are copied
> from an autogenerated file. Since we updated this structure, we have
> copied all update to that structure. The value we
> are currently interested in is 0x8UL.
> 
> Do you want me to repost the series after removing the above define?

I will remove it by myself, no need to repost.

Thanks

> >
> > > +     #define CMDQ_INITIALIZE_FW_FLAGS_OPTIMIZE_MODIFY_QP_SUPPORTED    0x8UL
> >
> > Thanks