From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0C8F3C433FE for ; Thu, 20 Jan 2022 06:43:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358798AbiATGnT (ORCPT ); Thu, 20 Jan 2022 01:43:19 -0500 Received: from out30-56.freemail.mail.aliyun.com ([115.124.30.56]:56338 "EHLO out30-56.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358781AbiATGnM (ORCPT ); Thu, 20 Jan 2022 01:43:12 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R871e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=xuanzhuo@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0V2L1lSE_1642660988; Received: from localhost(mailfrom:xuanzhuo@linux.alibaba.com fp:SMTPD_---0V2L1lSE_1642660988) by smtp.aliyun-inc.com(127.0.0.1); Thu, 20 Jan 2022 14:43:08 +0800 From: Xuan Zhuo To: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Cc: "Michael S. Tsirkin" , Jason Wang , "David S. Miller" , Jakub Kicinski , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , bpf@vger.kernel.org Subject: [PATCH v2 04/12] virtio: queue_reset: pci: update struct virtio_pci_common_cfg and option functions Date: Thu, 20 Jan 2022 14:42:55 +0800 Message-Id: <20220120064303.106639-5-xuanzhuo@linux.alibaba.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220120064303.106639-1-xuanzhuo@linux.alibaba.com> References: <20220120064303.106639-1-xuanzhuo@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add queue_reset in virtio_pci_common_cfg, and add related operation functions. Signed-off-by: Xuan Zhuo --- drivers/virtio/virtio_pci_modern_dev.c | 28 ++++++++++++++++++++++++++ include/linux/virtio_pci_modern.h | 2 ++ include/uapi/linux/virtio_pci.h | 1 + 3 files changed, 31 insertions(+) diff --git a/drivers/virtio/virtio_pci_modern_dev.c b/drivers/virtio/virtio_pci_modern_dev.c index e11ed748e661..be02f812a2f6 100644 --- a/drivers/virtio/virtio_pci_modern_dev.c +++ b/drivers/virtio/virtio_pci_modern_dev.c @@ -463,6 +463,34 @@ void vp_modern_set_status(struct virtio_pci_modern_device *mdev, } EXPORT_SYMBOL_GPL(vp_modern_set_status); +/* + * vp_modern_get_queue_reset - get the queue reset status + * @mdev: the modern virtio-pci device + * @index: queue index + */ +int vp_modern_get_queue_reset(struct virtio_pci_modern_device *mdev, u16 index) +{ + struct virtio_pci_common_cfg __iomem *cfg = mdev->common; + + vp_iowrite16(index, &cfg->queue_select); + return vp_ioread16(&cfg->queue_reset); +} +EXPORT_SYMBOL_GPL(vp_modern_get_queue_reset); + +/* + * vp_modern_set_queue_reset - reset the queue + * @mdev: the modern virtio-pci device + * @index: queue index + */ +void vp_modern_set_queue_reset(struct virtio_pci_modern_device *mdev, u16 index) +{ + struct virtio_pci_common_cfg __iomem *cfg = mdev->common; + + vp_iowrite16(index, &cfg->queue_select); + vp_iowrite16(1, &cfg->queue_reset); +} +EXPORT_SYMBOL_GPL(vp_modern_set_queue_reset); + /* * vp_modern_queue_vector - set the MSIX vector for a specific virtqueue * @mdev: the modern virtio-pci device diff --git a/include/linux/virtio_pci_modern.h b/include/linux/virtio_pci_modern.h index eb2bd9b4077d..cc4154dd7b28 100644 --- a/include/linux/virtio_pci_modern.h +++ b/include/linux/virtio_pci_modern.h @@ -106,4 +106,6 @@ void __iomem * vp_modern_map_vq_notify(struct virtio_pci_modern_device *mdev, u16 index, resource_size_t *pa); int vp_modern_probe(struct virtio_pci_modern_device *mdev); void vp_modern_remove(struct virtio_pci_modern_device *mdev); +int vp_modern_get_queue_reset(struct virtio_pci_modern_device *mdev, u16 index); +void vp_modern_set_queue_reset(struct virtio_pci_modern_device *mdev, u16 index); #endif diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 492c89f56c6a..bf10f349087f 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -165,6 +165,7 @@ struct virtio_pci_common_cfg { __le32 queue_used_lo; /* read-write */ __le32 queue_used_hi; /* read-write */ __le16 queue_notify_data; /* read-write */ + __le16 queue_reset; /* read-write */ }; /* Fields in VIRTIO_PCI_CAP_PCI_CFG: */ -- 2.31.0