From nobody Tue Feb 10 16:58:02 2026 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EC73E158D7D; Wed, 24 Apr 2024 09:04:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.188 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713949446; cv=none; b=rf4dlvYuz/j7a5dUZi4TTbFaTXcYhaE11db8NSL3hbqsVGrO6UMZoB6c3d19TM4prK4Run7l4MnDYlYbvY63uaidyAtgtj8JS/1IZuLXvowiwkdYTiFv9syQZDBiK6g94WJMEK2izSF0sBFJwVp7tDGjyTVGqB0t8wr8dfSXDrE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713949446; c=relaxed/simple; bh=8brYhM2FfPKIlVI/StWeG/lz5kWQo4DD8rJE5sLABAw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sXyBuMfzwXPodTX3VNyXngKfzOcUBpOSW8hnU/rm76IDQV4RR11kn0ptTlZgwlZw1rDYjD+JLN+smK5BZ9UIYGO4cM9COFc250wO0FUE3Vi3GoirLbP5C1SZIYh5iznenxnyE5/luP/rAYjy2N9CSiOraxuyQXsR15XtO8tmydc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.194]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4VPY0p13tbzcb2F; Wed, 24 Apr 2024 17:02:50 +0800 (CST) Received: from kwepemm600005.china.huawei.com (unknown [7.193.23.191]) by mail.maildlp.com (Postfix) with ESMTPS id B03D314040D; Wed, 24 Apr 2024 17:03:54 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemm600005.china.huawei.com (7.193.23.191) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Wed, 24 Apr 2024 17:03:54 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH v5 3/5] hisi_acc_vfio_pci: create subfunction for data reading Date: Wed, 24 Apr 2024 16:57:19 +0800 Message-ID: <20240424085721.12760-4-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20240424085721.12760-1-liulongfang@huawei.com> References: <20240424085721.12760-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600005.china.huawei.com (7.193.23.191) Content-Type: text/plain; charset="utf-8" During the live migration process. It needs to obtain various status data of drivers and devices. In order to facilitate calling it in the debugfs function. For all operations that read data from device registers, the driver creates a subfunction. Also fixed the location of address data. Signed-off-by: Longfang Liu --- .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 54 +++++++++++-------- 1 file changed, 33 insertions(+), 21 deletions(-) diff --git a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c b/drivers/vfio/= pci/hisilicon/hisi_acc_vfio_pci.c index 0c7e31076ff4..bf358ba94b5d 100644 --- a/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c +++ b/drivers/vfio/pci/hisilicon/hisi_acc_vfio_pci.c @@ -486,31 +486,11 @@ static int vf_qm_load_data(struct hisi_acc_vf_core_de= vice *hisi_acc_vdev, return 0; } =20 -static int vf_qm_state_save(struct hisi_acc_vf_core_device *hisi_acc_vdev, - struct hisi_acc_vf_migration_file *migf) +static int vf_qm_read_data(struct hisi_qm *vf_qm, struct acc_vf_data *vf_d= ata) { - struct acc_vf_data *vf_data =3D &migf->vf_data; - struct hisi_qm *vf_qm =3D &hisi_acc_vdev->vf_qm; struct device *dev =3D &vf_qm->pdev->dev; int ret; =20 - if (unlikely(qm_wait_dev_not_ready(vf_qm))) { - /* Update state and return with match data */ - vf_data->vf_qm_state =3D QM_NOT_READY; - hisi_acc_vdev->vf_qm_state =3D vf_data->vf_qm_state; - migf->total_length =3D QM_MATCH_SIZE; - return 0; - } - - vf_data->vf_qm_state =3D QM_READY; - hisi_acc_vdev->vf_qm_state =3D vf_data->vf_qm_state; - - ret =3D vf_qm_cache_wb(vf_qm); - if (ret) { - dev_err(dev, "failed to writeback QM Cache!\n"); - return ret; - } - ret =3D qm_get_regs(vf_qm, vf_data); if (ret) return -EINVAL; @@ -536,6 +516,38 @@ static int vf_qm_state_save(struct hisi_acc_vf_core_de= vice *hisi_acc_vdev, return -EINVAL; } =20 + return 0; +} + +static int vf_qm_state_save(struct hisi_acc_vf_core_device *hisi_acc_vdev, + struct hisi_acc_vf_migration_file *migf) +{ + struct acc_vf_data *vf_data =3D &migf->vf_data; + struct hisi_qm *vf_qm =3D &hisi_acc_vdev->vf_qm; + struct device *dev =3D &vf_qm->pdev->dev; + int ret; + + if (unlikely(qm_wait_dev_not_ready(vf_qm))) { + /* Update state and return with match data */ + vf_data->vf_qm_state =3D QM_NOT_READY; + hisi_acc_vdev->vf_qm_state =3D vf_data->vf_qm_state; + migf->total_length =3D QM_MATCH_SIZE; + return 0; + } + + vf_data->vf_qm_state =3D QM_READY; + hisi_acc_vdev->vf_qm_state =3D vf_data->vf_qm_state; + + ret =3D vf_qm_cache_wb(vf_qm); + if (ret) { + dev_err(dev, "failed to writeback QM Cache!\n"); + return ret; + } + + ret =3D vf_qm_read_data(vf_qm, vf_data); + if (ret) + return -EINVAL; + migf->total_length =3D sizeof(struct acc_vf_data); return 0; } --=20 2.24.0