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From: Longfang Liu <liulongfang@huawei.com>
To: <alex.williamson@redhat.com>, <jgg@nvidia.com>,
	<shameerali.kolothum.thodi@huawei.com>
Cc: <cohuck@redhat.com>, <linux-kernel@vger.kernel.org>,
	<linuxarm@openeuler.org>, <liulongfang@huawei.com>
Subject: [PATCH v3 2/5] hisi_acc_vfio_pci: Fix device data address combination problem
Date: Sat, 24 Sep 2022 10:20:46 +0800	[thread overview]
Message-ID: <20220924022049.12022-3-liulongfang@huawei.com> (raw)
In-Reply-To: <20220924022049.12022-1-liulongfang@huawei.com>

The queue address of the accelerator device should be combined into
a dma address in a way of combining the low and high bits.
The previous combination is wrong and needs to be modified.

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Longfang Liu <liulongfang@huawei.com>
---
 drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
index 7ce656a7cf5c..0638a8a6b0c1 100644
--- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
+++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c
@@ -528,12 +528,12 @@ static int vf_qm_state_save(struct hisi_acc_vf_core_device *hisi_acc_vdev,
 		return -EINVAL;
 
 	/* Every reg is 32 bit, the dma address is 64 bit. */
-	vf_data->eqe_dma = vf_data->qm_eqc_dw[2];
+	vf_data->eqe_dma = vf_data->qm_eqc_dw[1];
 	vf_data->eqe_dma <<= QM_XQC_ADDR_OFFSET;
-	vf_data->eqe_dma |= vf_data->qm_eqc_dw[1];
-	vf_data->aeqe_dma = vf_data->qm_aeqc_dw[2];
+	vf_data->eqe_dma |= vf_data->qm_eqc_dw[0];
+	vf_data->aeqe_dma = vf_data->qm_aeqc_dw[1];
 	vf_data->aeqe_dma <<= QM_XQC_ADDR_OFFSET;
-	vf_data->aeqe_dma |= vf_data->qm_aeqc_dw[1];
+	vf_data->aeqe_dma |= vf_data->qm_aeqc_dw[0];
 
 	/* Through SQC_BT/CQC_BT to get sqc and cqc address */
 	ret = qm_get_sqc(vf_qm, &vf_data->sqc_dma);
-- 
2.33.0


  parent reply	other threads:[~2022-09-24  2:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-24  2:20 [PATCH v3 0/5] Fix some bugs and clean code issues Longfang Liu
2022-09-24  2:20 ` [PATCH v3 1/5] hisi_acc_vfio_pci: Fixes error return code issue Longfang Liu
2022-09-24  2:20 ` Longfang Liu [this message]
2022-09-24  2:20 ` [PATCH v3 3/5] hisi_acc_vfio_pci: Remove useless function parameter Longfang Liu
2022-09-24  2:20 ` [PATCH v3 4/5] hisi_acc_vfio_pci: Remove useless macro definitions Longfang Liu
2022-09-24  2:20 ` [PATCH v3 5/5] hisi_acc_vfio_pci: Update some log and comment formats Longfang Liu
2022-09-26  9:20 ` [PATCH v3 0/5] Fix some bugs and clean code issues liulongfang
2022-09-26  9:33 Longfang Liu
2022-09-26  9:33 ` [PATCH v3 2/5] hisi_acc_vfio_pci: Fix device data address combination problem Longfang Liu

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