[PATCH for-next 1/9] RDMA/hns: Don't modify rq next block addr in HIP09 QPC

Junxian Huang
2024-09-06T09:40:37Z

The field 'rq next block addr' in QPC can be updated by driver only
on HIP08. On HIP09 HW updates this field while driver is not allowed.

Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
---
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 621b057fb9da..a166b476977f 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4423,12 +4423,14 @@ static int config_qp_rq_buf(struct hns_roce_dev *hr_dev,
upper_32_bits(to_hr_hw_page_addr(mtts[0])));
hr_reg_clear(qpc_mask, QPC_RQ_CUR_BLK_ADDR_H);

- context->rq_nxt_blk_addr = cpu_to_le32(to_hr_hw_page_addr(mtts[1]));
- qpc_mask->rq_nxt_blk_addr = 0;
-
- hr_reg_write(context, QPC_RQ_NXT_BLK_ADDR_H,
- upper_32_bits(to_hr_hw_page_addr(mtts[1])));
- hr_reg_clear(qpc_mask, QPC_RQ_NXT_BLK_ADDR_H);
+ if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) {
+ context->rq_nxt_blk_addr =
+ cpu_to_le32(to_hr_hw_page_addr(mtts[1]));
+ qpc_mask->rq_nxt_blk_addr = 0;
+ hr_reg_write(context, QPC_RQ_NXT_BLK_ADDR_H,
+ upper_32_bits(to_hr_hw_page_addr(mtts[1])));
+ hr_reg_clear(qpc_mask, QPC_RQ_NXT_BLK_ADDR_H);
+ }

return 0;
}
--
2.33.0