RDMA/hns: Don't modify rq next block addr in HIP09 QPC

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>
Link: https://patch.msgid.link/20240906093444.3571619-2-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 621b057fb9daa61fd36507a8f682bc691571ee25..a166b476977f151e98dbc73d8f75272fb7f573c4 100644 (file)
--- 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;
 }