linux-kernel - [PATCH 5.4 072/203] RDMA/hns: Fix to support 64K page for srq

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Message-Id: <20200116231750.455933921@linuxfoundation.org>
Date:   Fri, 17 Jan 2020 00:16:29 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lijun Ou <oulijun@...wei.com>,
        Weihang Li <liweihang@...ilicon.com>,
        Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH 5.4 072/203] RDMA/hns: Fix to support 64K page for srq

From: Lijun Ou <oulijun@...wei.com>

commit 5c7e76fb7cb5071be800c938ebf2c475e140d3f0 upstream.

SRQ's page size configuration of BA and buffer should depend on current
PAGE_SHIFT, or it can't work in scenario of 64K page.

Fixes: c7bcb13442e1 ("RDMA/hns: Add SRQ support for hip08 kernel mode")
Link: https://lore.kernel.org/r/1571908917-16220-2-git-send-email-liweihang@hisilicon.com
Signed-off-by: Lijun Ou <oulijun@...wei.com>
Signed-off-by: Weihang Li <liweihang@...ilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -6088,11 +6088,11 @@ static void hns_roce_v2_write_srqc(struc
 	roce_set_field(srq_context->byte_44_idxbufpgsz_addr,
 		       SRQC_BYTE_44_SRQ_IDX_BA_PG_SZ_M,
 		       SRQC_BYTE_44_SRQ_IDX_BA_PG_SZ_S,
-		       hr_dev->caps.idx_ba_pg_sz);
+		       hr_dev->caps.idx_ba_pg_sz + PG_SHIFT_OFFSET);
 	roce_set_field(srq_context->byte_44_idxbufpgsz_addr,
 		       SRQC_BYTE_44_SRQ_IDX_BUF_PG_SZ_M,
 		       SRQC_BYTE_44_SRQ_IDX_BUF_PG_SZ_S,
-		       hr_dev->caps.idx_buf_pg_sz);
+		       hr_dev->caps.idx_buf_pg_sz + PG_SHIFT_OFFSET);
 
 	srq_context->idx_nxt_blk_addr =
 		cpu_to_le32(mtts_idx[1] >> PAGE_ADDR_SHIFT);