linux-kernel - [PATCH v5 10/12] vop: switch to virtio_legacy

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Message-ID: <20200406213314.248038-11-mst@redhat.com>
Date:   Mon, 6 Apr 2020 17:35:13 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Sudeep Dutt <sudeep.dutt@...el.com>,
        Ashutosh Dixit <ashutosh.dixit@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v5 10/12] vop: switch to virtio_legacy_init/size

These are used for legacy ring format, switch to APIs that make this
explicit.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---

maintainers, pls ack merging this through virtio tree due to dependency
on previous patches in the patchset.

 drivers/misc/mic/vop/vop_main.c   | 5 +++--
 drivers/misc/mic/vop/vop_vringh.c | 8 +++++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/mic/vop/vop_main.c b/drivers/misc/mic/vop/vop_main.c
index 85942f6717c5..829b3b14b1d7 100644
--- a/drivers/misc/mic/vop/vop_main.c
+++ b/drivers/misc/mic/vop/vop_main.c
@@ -283,7 +283,7 @@ static struct virtqueue *vop_new_virtqueue(unsigned int index,
 	bool weak_barriers = false;
 	struct vring vring;
 
-	vring_init(&vring, num, pages, MIC_VIRTIO_RING_ALIGN);
+	vring_legacy_init(&vring, num, pages, MIC_VIRTIO_RING_ALIGN);
 	vring.used = used;
 
 	return __vring_new_virtqueue(index, vring, vdev, weak_barriers, context,
@@ -320,7 +320,8 @@ static struct virtqueue *vop_find_vq(struct virtio_device *dev,
 	/* First assign the vring's allocated in host memory */
 	vqconfig = _vop_vq_config(vdev->desc) + index;
 	memcpy_fromio(&config, vqconfig, sizeof(config));
-	_vr_size = vring_size(le16_to_cpu(config.num), MIC_VIRTIO_RING_ALIGN);
+	_vr_size = vring_legacy_size(le16_to_cpu(config.num),
+				     MIC_VIRTIO_RING_ALIGN);
 	vr_size = PAGE_ALIGN(_vr_size + sizeof(struct _mic_vring_info));
 	va = vpdev->hw_ops->remap(vpdev, le64_to_cpu(config.address), vr_size);
 	if (!va)
diff --git a/drivers/misc/mic/vop/vop_vringh.c b/drivers/misc/mic/vop/vop_vringh.c
index 30eac172f017..0535c02d637d 100644
--- a/drivers/misc/mic/vop/vop_vringh.c
+++ b/drivers/misc/mic/vop/vop_vringh.c
@@ -296,7 +296,8 @@ static int vop_virtio_add_device(struct vop_vdev *vdev,
 
 		num = le16_to_cpu(vqconfig[i].num);
 		mutex_init(&vvr->vr_mutex);
-		vr_size = PAGE_ALIGN(vring_size(num, MIC_VIRTIO_RING_ALIGN) +
+		vr_size = PAGE_ALIGN(vring_legacy_size(num,
+						       MIC_VIRTIO_RING_ALIGN) +
 			sizeof(struct _mic_vring_info));
 		vr->va = (void *)
 			__get_free_pages(GFP_KERNEL | __GFP_ZERO,
@@ -308,7 +309,8 @@ static int vop_virtio_add_device(struct vop_vdev *vdev,
 			goto err;
 		}
 		vr->len = vr_size;
-		vr->info = vr->va + vring_size(num, MIC_VIRTIO_RING_ALIGN);
+		vr->info = vr->va + vring_legacy_size(num,
+						      MIC_VIRTIO_RING_ALIGN);
 		vr->info->magic = cpu_to_le32(MIC_MAGIC + vdev->virtio_id + i);
 		vr_addr = dma_map_single(&vpdev->dev, vr->va, vr_size,
 					 DMA_BIDIRECTIONAL);
@@ -321,7 +323,7 @@ static int vop_virtio_add_device(struct vop_vdev *vdev,
 		}
 		vqconfig[i].address = cpu_to_le64(vr_addr);
 
-		vring_init(&vr->vr, num, vr->va, MIC_VIRTIO_RING_ALIGN);
+		vring_legacy_init(&vr->vr, num, vr->va, MIC_VIRTIO_RING_ALIGN);
 		ret = vringh_init_kern(&vvr->vrh,
 				       *(u32 *)mic_vq_features(vdev->dd),
 				       num, false, vr->vr.desc, vr->vr.avail,
-- 
MST