Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752537AbaK3PKb (ORCPT ); Sun, 30 Nov 2014 10:10:31 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42626 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752456AbaK3PKZ (ORCPT ); Sun, 30 Nov 2014 10:10:25 -0500 Date: Sun, 30 Nov 2014 17:10:03 +0200 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: David Miller , cornelia.huck@de.ibm.com, rusty@au1.ibm.com, nab@linux-iscsi.org, pbonzini@redhat.com, thuth@linux.vnet.ibm.com, dahi@linux.vnet.ibm.com, Rusty Russell , virtualization@lists.linux-foundation.org Subject: [PATCH v7 10/46] virtio_config: endian conversion for v1.0 Message-ID: <1417359787-10138-11-git-send-email-mst@redhat.com> References: <1417359787-10138-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1417359787-10138-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We (ab)use virtio conversion functions for device-specific config space accesses. Based on original patches by Cornelia and Rusty. Signed-off-by: Rusty Russell Signed-off-by: Cornelia Huck Signed-off-by: Michael S. Tsirkin --- include/linux/virtio_config.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 02f0acb..1fa5faa 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -318,12 +318,13 @@ static inline u16 virtio_cread16(struct virtio_device *vdev, { u16 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio16_to_cpu(vdev, (__force __virtio16)ret); } static inline void virtio_cwrite16(struct virtio_device *vdev, unsigned int offset, u16 val) { + val = (__force u16)cpu_to_virtio16(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } @@ -332,12 +333,13 @@ static inline u32 virtio_cread32(struct virtio_device *vdev, { u32 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio32_to_cpu(vdev, (__force __virtio32)ret); } static inline void virtio_cwrite32(struct virtio_device *vdev, unsigned int offset, u32 val) { + val = (__force u32)cpu_to_virtio32(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } @@ -346,12 +348,13 @@ static inline u64 virtio_cread64(struct virtio_device *vdev, { u64 ret; vdev->config->get(vdev, offset, &ret, sizeof(ret)); - return ret; + return virtio64_to_cpu(vdev, (__force __virtio64)ret); } static inline void virtio_cwrite64(struct virtio_device *vdev, unsigned int offset, u64 val) { + val = (__force u64)cpu_to_virtio64(vdev, val); vdev->config->set(vdev, offset, &val, sizeof(val)); } -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/