From patchwork Tue Jul 30 12:14:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13747338 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (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 AD86119DFBB; Tue, 30 Jul 2024 12:21:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722342116; cv=none; b=JrScCqAUHiu1HCkKD2waegomojqJIg5ix+SvCJf/QFq2OUAoFiTcuOvm3UilfE0Mymg1zfV0lyEn17xAWb7tVDOv0azVCouLkLiUsKz8GoFCkq4j34+ygqj6BrHg9SQSnwE+KYLctz9FtTUPaU0hVWE5bl3ey6V85NTAdew7cys= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722342116; c=relaxed/simple; bh=6ruClk+RUIQ6w16trO+o3Q7Ht2qzbHFonq/WKXnuPnQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=PN6u7CJ6k4hI4r2P6y0t3uqtO9sYvUYJPJisWtMZj7bQsXrxNbYMxWqtK3tf/2Uz8hUNT0qhGVsYLNZgbmin3FM/V6Tu86faONa5vZmUrw5Nr2yX6xTyP0uZW89taH5s8Gb9L3Yd7cnGqkMbRBLg+Qfyb2smVDJwT8Et8QIRPzc= 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=45.249.212.187 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 [172.19.163.252]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4WYDqM2wHNzxVGY; Tue, 30 Jul 2024 20:21:35 +0800 (CST) Received: from kwepemm600005.china.huawei.com (unknown [7.193.23.191]) by mail.maildlp.com (Postfix) with ESMTPS id BD3CC18009F; Tue, 30 Jul 2024 20:21:45 +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 15.1.2507.39; Tue, 30 Jul 2024 20:21:45 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH v7 2/4] hisi_acc_vfio_pci: create subfunction for data reading Date: Tue, 30 Jul 2024 20:14:36 +0800 Message-ID: <20240730121438.58455-3-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20240730121438.58455-1-liulongfang@huawei.com> References: <20240730121438.58455-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600005.china.huawei.com (7.193.23.191) This patch generates the code for the operation of reading data from the device into a sub-function. Then, it can be called during the device status data saving phase of the live migration process and the device status data reading function in debugfs. Thereby reducing the redundant code of the driver. Signed-off-by: Longfang Liu Reviewed-by: Shameer Kolothum --- .../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 45351be8e270..a8c53952d82e 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_device *hisi_acc_vdev, return 0; } -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_data) { - struct acc_vf_data *vf_data = &migf->vf_data; - struct hisi_qm *vf_qm = &hisi_acc_vdev->vf_qm; struct device *dev = &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 = QM_NOT_READY; - hisi_acc_vdev->vf_qm_state = vf_data->vf_qm_state; - migf->total_length = QM_MATCH_SIZE; - return 0; - } - - vf_data->vf_qm_state = QM_READY; - hisi_acc_vdev->vf_qm_state = vf_data->vf_qm_state; - - ret = vf_qm_cache_wb(vf_qm); - if (ret) { - dev_err(dev, "failed to writeback QM Cache!\n"); - return ret; - } - ret = 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_device *hisi_acc_vdev, return -EINVAL; } + 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 = &migf->vf_data; + struct hisi_qm *vf_qm = &hisi_acc_vdev->vf_qm; + struct device *dev = &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 = QM_NOT_READY; + hisi_acc_vdev->vf_qm_state = vf_data->vf_qm_state; + migf->total_length = QM_MATCH_SIZE; + return 0; + } + + vf_data->vf_qm_state = QM_READY; + hisi_acc_vdev->vf_qm_state = vf_data->vf_qm_state; + + ret = vf_qm_cache_wb(vf_qm); + if (ret) { + dev_err(dev, "failed to writeback QM Cache!\n"); + return ret; + } + + ret = vf_qm_read_data(vf_qm, vf_data); + if (ret) + return -EINVAL; + migf->total_length = sizeof(struct acc_vf_data); return 0; }