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Message-ID: <20161123194109.420760-2-salil.mehta@huawei.com>
Date: Wed, 23 Nov 2016 19:40:59 +0000
From: Salil Mehta <salil.mehta@...wei.com>
To: <dledford@...hat.com>
CC: <salil.mehta@...wei.com>, <xavier.huwei@...wei.com>,
<oulijun@...wei.com>, <xushaobo2@...wei.com>,
<mehta.salil.lnk@...il.com>, <lijun_nudt@....com>,
<linux-rdma@...r.kernel.org>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: [PATCH V3 for-next 01/11] IB/hns: Add the interface for querying QP1
From: Lijun Ou <oulijun@...wei.com>
In old code, It only added the interface for querying non-specific
QP. This patch mainly adds an interface for querying QP1.
Signed-off-by: Lijun Ou <oulijun@...wei.com>
Reviewed-by: Wei Hu (Xavier) <xavier.huwei@...wei.com>
Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
---
Change Log
Patch V2: Addressed the comment provided by Anurup M
Link: https://patchwork.kernel.org/patch/9412855/
Patch V1: Initial Submit
---
drivers/infiniband/hw/hns/hns_roce_hw_v1.c | 83 +++++++++++++++++++++++++++-
drivers/infiniband/hw/hns/hns_roce_hw_v1.h | 6 +-
2 files changed, 86 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index 71232e5..7485514 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -2630,8 +2630,78 @@ static int hns_roce_v1_query_qpc(struct hns_roce_dev *hr_dev,
return ret;
}
-int hns_roce_v1_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
- int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
+static int hns_roce_v1_q_sqp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
+ struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
+ struct hns_roce_sqp_context context;
+ u32 addr;
+
+ mutex_lock(&hr_qp->mutex);
+
+ if (hr_qp->state == IB_QPS_RESET) {
+ qp_attr->qp_state = IB_QPS_RESET;
+ goto done;
+ }
+
+ addr = ROCEE_QP1C_CFG0_0_REG +
+ hr_qp->port * sizeof(struct hns_roce_sqp_context);
+ context.qp1c_bytes_4 = roce_read(hr_dev, addr);
+ context.sq_rq_bt_l = roce_read(hr_dev, addr + 1);
+ context.qp1c_bytes_12 = roce_read(hr_dev, addr + 2);
+ context.qp1c_bytes_16 = roce_read(hr_dev, addr + 3);
+ context.qp1c_bytes_20 = roce_read(hr_dev, addr + 4);
+ context.cur_rq_wqe_ba_l = roce_read(hr_dev, addr + 5);
+ context.qp1c_bytes_28 = roce_read(hr_dev, addr + 6);
+ context.qp1c_bytes_32 = roce_read(hr_dev, addr + 7);
+ context.cur_sq_wqe_ba_l = roce_read(hr_dev, addr + 8);
+ context.qp1c_bytes_40 = roce_read(hr_dev, addr + 9);
+
+ hr_qp->state = roce_get_field(context.qp1c_bytes_4,
+ QP1C_BYTES_4_QP_STATE_M,
+ QP1C_BYTES_4_QP_STATE_S);
+ qp_attr->qp_state = hr_qp->state;
+ qp_attr->path_mtu = IB_MTU_256;
+ qp_attr->path_mig_state = IB_MIG_ARMED;
+ qp_attr->qkey = QKEY_VAL;
+ qp_attr->rq_psn = 0;
+ qp_attr->sq_psn = 0;
+ qp_attr->dest_qp_num = 1;
+ qp_attr->qp_access_flags = 6;
+
+ qp_attr->pkey_index = roce_get_field(context.qp1c_bytes_20,
+ QP1C_BYTES_20_PKEY_IDX_M,
+ QP1C_BYTES_20_PKEY_IDX_S);
+ qp_attr->port_num = hr_qp->port + 1;
+ qp_attr->sq_draining = 0;
+ qp_attr->max_rd_atomic = 0;
+ qp_attr->max_dest_rd_atomic = 0;
+ qp_attr->min_rnr_timer = 0;
+ qp_attr->timeout = 0;
+ qp_attr->retry_cnt = 0;
+ qp_attr->rnr_retry = 0;
+ qp_attr->alt_timeout = 0;
+
+done:
+ qp_attr->cur_qp_state = qp_attr->qp_state;
+ qp_attr->cap.max_recv_wr = hr_qp->rq.wqe_cnt;
+ qp_attr->cap.max_recv_sge = hr_qp->rq.max_gs;
+ qp_attr->cap.max_send_wr = hr_qp->sq.wqe_cnt;
+ qp_attr->cap.max_send_sge = hr_qp->sq.max_gs;
+ qp_attr->cap.max_inline_data = 0;
+ qp_init_attr->cap = qp_attr->cap;
+ qp_init_attr->create_flags = 0;
+
+ mutex_unlock(&hr_qp->mutex);
+
+ return 0;
+}
+
+static int hns_roce_v1_q_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
{
struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device);
struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
@@ -2767,6 +2837,15 @@ int hns_roce_v1_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
return ret;
}
+int hns_roce_v1_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
+ int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
+{
+ struct hns_roce_qp *hr_qp = to_hr_qp(ibqp);
+
+ return hr_qp->doorbell_qpn <= 1 ?
+ hns_roce_v1_q_sqp(ibqp, qp_attr, qp_attr_mask, qp_init_attr) :
+ hns_roce_v1_q_qp(ibqp, qp_attr, qp_attr_mask, qp_init_attr);
+}
static void hns_roce_v1_destroy_qp_common(struct hns_roce_dev *hr_dev,
struct hns_roce_qp *hr_qp,
int is_user)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h
index 539b0a3b..2e1878b 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.h
@@ -480,13 +480,17 @@ struct hns_roce_sqp_context {
u32 qp1c_bytes_12;
u32 qp1c_bytes_16;
u32 qp1c_bytes_20;
- u32 qp1c_bytes_28;
u32 cur_rq_wqe_ba_l;
+ u32 qp1c_bytes_28;
u32 qp1c_bytes_32;
u32 cur_sq_wqe_ba_l;
u32 qp1c_bytes_40;
};
+#define QP1C_BYTES_4_QP_STATE_S 0
+#define QP1C_BYTES_4_QP_STATE_M \
+ (((1UL << 3) - 1) << QP1C_BYTES_4_QP_STATE_S)
+
#define QP1C_BYTES_4_SQ_WQE_SHIFT_S 8
#define QP1C_BYTES_4_SQ_WQE_SHIFT_M \
(((1UL << 4) - 1) << QP1C_BYTES_4_SQ_WQE_SHIFT_S)
--
1.7.9.5
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