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From:   Kai Ye <yekai13@huawei.com>
To:     <herbert@gondor.apana.org.au>
CC:     <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <wangzhou1@hisilicon.com>, <yekai13@huawei.com>
Subject: [PATCH 1/2] crypto: hisilicon/qm - fix the uacce mmap failed
Date:   Sat, 28 Aug 2021 11:39:38 +0800
Message-ID: <1630121979-53760-2-git-send-email-yekai13@huawei.com>
In-Reply-To: <1630121979-53760-1-git-send-email-yekai13@huawei.com>
References: <1630121979-53760-1-git-send-email-yekai13@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Allocate an extra memory page for qp. This extra page is
used to set the device or qp status. But this page not
be used currently. Meanwhile it leads to dus size not equal
to mmap size as using uacce sva mode, and cause the app task
broken.

Signed-off-by: Kai Ye <yekai13@huawei.com>
---
 drivers/crypto/hisilicon/qm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 369562d..2bd25bf 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3122,8 +3122,10 @@ static int qm_alloc_uacce(struct hisi_qm *qm)
 	else
 		mmio_page_nr = qm->db_interval / PAGE_SIZE;
 
+	/* Add one more page for device or qp status */
 	dus_page_nr = (PAGE_SIZE - 1 + qm->sqe_size * QM_Q_DEPTH +
-		       sizeof(struct qm_cqe) * QM_Q_DEPTH) >> PAGE_SHIFT;
+		       sizeof(struct qm_cqe) * QM_Q_DEPTH  + PAGE_SIZE) >>
+					 PAGE_SHIFT;
 
 	uacce->qf_pg_num[UACCE_QFRT_MMIO] = mmio_page_nr;
 	uacce->qf_pg_num[UACCE_QFRT_DUS]  = dus_page_nr;
-- 
2.7.4