From: Xi Wang wangxi11@huawei.com
Add a new command to update the configuration of WQE buffer addressing to QPC in DCA mode.
Signed-off-by: Xi Wang wangxi11@huawei.com Signed-off-by: Weihang Li liweihang@huawei.com --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 153 ++++++++++++++++++++++++++--- drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 1 + 2 files changed, 139 insertions(+), 15 deletions(-)
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 4ae76ba..95e90f1 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -2628,6 +2628,17 @@ static int hns_roce_v2_cmd_complete(struct hns_roce_dev *hr_dev) return status & HNS_ROCE_HW_MB_STATUS_MASK; }
+static inline void mbox_desc_init(struct hns_roce_post_mbox *mb, u64 in_param, + u64 out_param, u32 in_modifier, + u8 op_modifier, u16 op) +{ + mb->in_param_l = cpu_to_le32(in_param); + mb->in_param_h = cpu_to_le32(in_param >> 32); + mb->out_param_l = cpu_to_le32(out_param); + mb->out_param_h = cpu_to_le32(out_param >> 32); + mb->cmd_tag = cpu_to_le32(in_modifier << 8 | op); +} + static int hns_roce_mbox_post(struct hns_roce_dev *hr_dev, u64 in_param, u64 out_param, u32 in_modifier, u8 op_modifier, u16 op, u16 token, int event) @@ -2636,17 +2647,34 @@ static int hns_roce_mbox_post(struct hns_roce_dev *hr_dev, u64 in_param, struct hns_roce_post_mbox *mb = (struct hns_roce_post_mbox *)desc.data;
hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_POST_MB, false); - - mb->in_param_l = cpu_to_le32(in_param); - mb->in_param_h = cpu_to_le32(in_param >> 32); - mb->out_param_l = cpu_to_le32(out_param); - mb->out_param_h = cpu_to_le32(out_param >> 32); - mb->cmd_tag = cpu_to_le32(in_modifier << 8 | op); + mbox_desc_init(mb, in_param, out_param, in_modifier, op_modifier, op); mb->token_event_en = cpu_to_le32(event << 16 | token);
return hns_roce_cmq_send(hr_dev, &desc, 1); }
+static int hns_roce_mbox_send(struct hns_roce_dev *hr_dev, u64 in_param, + u64 out_param, u32 in_modifier, u8 op_modifier, + u16 op) +{ + struct hns_roce_cmq_desc desc; + struct hns_roce_post_mbox *mb = (struct hns_roce_post_mbox *)desc.data; + + hns_roce_cmq_setup_basic_desc(&desc, HNS_ROCE_OPC_SYNC_MB, false); + + mbox_desc_init(mb, in_param, out_param, in_modifier, op_modifier, op); + + /* The hardware doesn't care about the token fields when working in + * sync mode. + */ + mb->token_event_en = 0; + + /* The cmdq send returns 0 indicates that the hardware has already + * finished the operation defined in this mbox. + */ + return hns_roce_cmq_send(hr_dev, &desc, 1); +} + static int hns_roce_v2_post_mbox(struct hns_roce_dev *hr_dev, u64 in_param, u64 out_param, u32 in_modifier, u8 op_modifier, u16 op, u16 token, int event) @@ -4050,15 +4078,16 @@ static void modify_qp_init_to_init(struct ib_qp *ibqp, static int config_qp_rq_buf(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp, struct hns_roce_v2_qp_context *context, - struct hns_roce_v2_qp_context *qpc_mask) + struct hns_roce_v2_qp_context *qpc_mask, + struct hns_roce_dca_attr *dca_attr) { u64 mtts[MTT_MIN_COUNT] = { 0 }; u64 wqe_sge_ba; int count;
/* Search qp buf's mtts */ - count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, hr_qp->rq.offset, mtts, - MTT_MIN_COUNT, &wqe_sge_ba); + count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, dca_attr->rq_offset, + mtts, ARRAY_SIZE(mtts), &wqe_sge_ba); if (hr_qp->rq.wqe_cnt && count < 1) { ibdev_err(&hr_dev->ib_dev, "failed to find RQ WQE, QPN = 0x%lx.\n", hr_qp->qpn); @@ -4160,7 +4189,8 @@ static int config_qp_rq_buf(struct hns_roce_dev *hr_dev, static int config_qp_sq_buf(struct hns_roce_dev *hr_dev, struct hns_roce_qp *hr_qp, struct hns_roce_v2_qp_context *context, - struct hns_roce_v2_qp_context *qpc_mask) + struct hns_roce_v2_qp_context *qpc_mask, + struct hns_roce_dca_attr *dca_attr) { struct ib_device *ibdev = &hr_dev->ib_dev; u64 sge_cur_blk = 0; @@ -4168,7 +4198,8 @@ static int config_qp_sq_buf(struct hns_roce_dev *hr_dev, int count;
/* search qp buf's mtts */ - count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, 0, &sq_cur_blk, 1, NULL); + count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, dca_attr->sq_offset, + &sq_cur_blk, 1, NULL); if (count < 1) { ibdev_err(ibdev, "failed to find QP(0x%lx) SQ buf.\n", hr_qp->qpn); @@ -4176,8 +4207,8 @@ static int config_qp_sq_buf(struct hns_roce_dev *hr_dev, } if (hr_qp->sge.sge_cnt > 0) { count = hns_roce_mtr_find(hr_dev, &hr_qp->mtr, - hr_qp->sge.offset, - &sge_cur_blk, 1, NULL); + dca_attr->sge_offset, &sge_cur_blk, 1, + NULL); if (count < 1) { ibdev_err(ibdev, "failed to find QP(0x%lx) SGE buf.\n", hr_qp->qpn); @@ -4244,6 +4275,7 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp, struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device); struct hns_roce_qp *hr_qp = to_hr_qp(ibqp); struct ib_device *ibdev = &hr_dev->ib_dev; + struct hns_roce_dca_attr dca_attr = {}; dma_addr_t trrl_ba; dma_addr_t irrl_ba; enum ib_mtu mtu; @@ -4255,7 +4287,8 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp, int port; int ret;
- ret = config_qp_rq_buf(hr_dev, hr_qp, context, qpc_mask); + dca_attr.rq_offset = hr_qp->rq.offset; + ret = config_qp_rq_buf(hr_dev, hr_qp, context, qpc_mask, &dca_attr); if (ret) { ibdev_err(ibdev, "failed to config rq buf, ret = %d.\n", ret); return ret; @@ -4421,6 +4454,7 @@ static int modify_qp_rtr_to_rts(struct ib_qp *ibqp, struct hns_roce_dev *hr_dev = to_hr_dev(ibqp->device); struct hns_roce_qp *hr_qp = to_hr_qp(ibqp); struct ib_device *ibdev = &hr_dev->ib_dev; + struct hns_roce_dca_attr dca_attr = {}; int ret;
/* Not support alternate path and path migration */ @@ -4429,7 +4463,9 @@ static int modify_qp_rtr_to_rts(struct ib_qp *ibqp, return -EINVAL; }
- ret = config_qp_sq_buf(hr_dev, hr_qp, context, qpc_mask); + dca_attr.sq_offset = hr_qp->sq.offset; + dca_attr.sge_offset = hr_qp->sge.offset; + ret = config_qp_sq_buf(hr_dev, hr_qp, context, qpc_mask, &dca_attr); if (ret) { ibdev_err(ibdev, "failed to config sq buf, ret = %d.\n", ret); return ret; @@ -4947,6 +4983,92 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp, return ret; }
+static int init_dca_buf_attr(struct hns_roce_dev *hr_dev, + struct hns_roce_qp *hr_qp, + struct hns_roce_dca_attr *init_attr, + struct hns_roce_dca_attr *dca_attr) +{ + struct ib_device *ibdev = &hr_dev->ib_dev; + + if (hr_qp->sq.wqe_cnt > 0) { + dca_attr->sq_offset = hr_qp->sq.offset + init_attr->sq_offset; + if (dca_attr->sq_offset >= hr_qp->sge.offset) { + ibdev_err(ibdev, "failed to check SQ offset = %u\n", + init_attr->sq_offset); + return -EINVAL; + } + } + + if (hr_qp->sge.sge_cnt > 0) { + dca_attr->sge_offset = hr_qp->sge.offset + init_attr->sge_offset; + if (dca_attr->sge_offset >= hr_qp->rq.offset) { + ibdev_err(ibdev, "failed to check exSGE offset = %u\n", + init_attr->sge_offset); + return -EINVAL; + } + } + + if (hr_qp->rq.wqe_cnt > 0) { + dca_attr->rq_offset = hr_qp->rq.offset + init_attr->rq_offset; + if (dca_attr->rq_offset >= hr_qp->buff_size) { + ibdev_err(ibdev, "failed to check RQ offset = %u\n", + init_attr->rq_offset); + return -EINVAL; + } + } + + return 0; +} + +static int hns_roce_v2_set_dca_buf(struct hns_roce_dev *hr_dev, + struct hns_roce_qp *hr_qp, + struct hns_roce_dca_attr *init_attr) +{ + struct ib_device *ibdev = &hr_dev->ib_dev; + struct hns_roce_v2_qp_context *qpc, *msk; + struct hns_roce_dca_attr dca_attr = {}; + dma_addr_t dma_handle; + int qpc_sz; + int ret; + + ret = init_dca_buf_attr(hr_dev, hr_qp, init_attr, &dca_attr); + if (ret) { + ibdev_err(ibdev, "failed to init DCA attr, ret = %d.\n", ret); + return ret; + } + + qpc_sz = hr_dev->caps.qpc_sz; + WARN_ON(2 * qpc_sz > HNS_ROCE_MAILBOX_SIZE); + qpc = dma_pool_alloc(hr_dev->cmd.pool, GFP_ATOMIC, &dma_handle); + if (!qpc) + return -ENOMEM; + + msk = (struct hns_roce_v2_qp_context *)((void *)qpc + qpc_sz); + memset(msk, 0xff, qpc_sz); + + ret = config_qp_rq_buf(hr_dev, hr_qp, qpc, msk, &dca_attr); + if (ret) { + ibdev_err(ibdev, "failed to config rq qpc, ret = %d.\n", ret); + goto done; + } + + ret = config_qp_sq_buf(hr_dev, hr_qp, qpc, msk, &dca_attr); + if (ret) { + ibdev_err(ibdev, "failed to config sq qpc, ret = %d.\n", ret); + goto done; + } + + ret = hns_roce_mbox_send(hr_dev, dma_handle, 0, hr_qp->qpn, 0, + HNS_ROCE_CMD_MODIFY_QPC); + if (ret) + ibdev_err(ibdev, "failed to modify DCA buf, ret = %d.\n", ret); + +done: + dma_pool_free(hr_dev->cmd.pool, qpc, dma_handle); + + return ret; +} + static int to_ib_qp_st(enum hns_roce_v2_qp_state state) { static const enum ib_qp_state map[] = { @@ -6256,6 +6378,7 @@ static const struct hns_roce_hw hns_roce_hw_v2 = { .write_cqc = hns_roce_v2_write_cqc, .set_hem = hns_roce_v2_set_hem, .clear_hem = hns_roce_v2_clear_hem, + .set_dca_buf = hns_roce_v2_set_dca_buf, .modify_qp = hns_roce_v2_modify_qp, .query_qp = hns_roce_v2_query_qp, .destroy_qp = hns_roce_v2_destroy_qp, diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h index 6c4c2b7..59861b8 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h @@ -245,6 +245,7 @@ enum hns_roce_opcode_type { HNS_ROCE_OPC_RESET_SCCC = 0x850b, HNS_ROCE_OPC_CFG_GMV_TBL = 0x850f, HNS_ROCE_OPC_CFG_GMV_BT = 0x8510, + HNS_ROCE_OPC_SYNC_MB = 0x8511, HNS_SWITCH_PARAMETER_CFG = 0x1033, };