From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com
Cc: gdawar@amd.com, elic@nvidia.com, linux-kernel@vger.kernel.org,
tanuj.kamde@amd.com, virtualization@lists.linux-foundation.org
Subject: [PATCH 4/5] vdpa: set dma mask for vDPA device
Date: Wed, 11 Jan 2023 14:28:08 +0800 [thread overview]
Message-ID: <20230111062809.25020-5-jasowang@redhat.com> (raw)
In-Reply-To: <20230111062809.25020-1-jasowang@redhat.com>
Setting DMA mask for vDPA device in case that there are virtqueue that
is not backed by DMA so the vDPA device could be advertised as the DMA
device that is used by DMA API for software emulated virtqueues.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/vdpa/vdpa.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
index 8ef7aa1365cc..6821b2850bbb 100644
--- a/drivers/vdpa/vdpa.c
+++ b/drivers/vdpa/vdpa.c
@@ -39,6 +39,11 @@ static int vdpa_dev_probe(struct device *d)
u32 max_num, min_num = 1;
int ret = 0;
+ d->dma_mask = &d->coherent_dma_mask;
+ ret = dma_set_mask_and_coherent(d, DMA_BIT_MASK(64));
+ if (ret)
+ return ret;
+
max_num = ops->get_vq_num_max(vdev);
if (ops->get_vq_num_min)
min_num = ops->get_vq_num_min(vdev);
--
2.25.1
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next prev parent reply other threads:[~2023-01-11 6:28 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-11 6:28 [PATCH 0/5] virtio_ring: per virtqueue DMA device Jason Wang
2023-01-11 6:28 ` [PATCH 1/5] virtio_ring: per virtqueue dma device Jason Wang
[not found] ` <DM8PR12MB5400E61C7E968AC7604556EBABFC9@DM8PR12MB5400.namprd12.prod.outlook.com>
2023-01-11 13:52 ` Michael S. Tsirkin
[not found] ` <DM8PR12MB54008B92885A8971C4CFED0EABFC9@DM8PR12MB5400.namprd12.prod.outlook.com>
2023-01-11 14:54 ` Michael S. Tsirkin
[not found] ` <DM8PR12MB54005A89EB05BF46AD7D2DFEABFC9@DM8PR12MB5400.namprd12.prod.outlook.com>
2023-01-11 16:26 ` Michael S. Tsirkin
2023-01-11 6:28 ` [PATCH 2/5] vdpa: introduce get_vq_dma_device() Jason Wang
2023-01-11 6:28 ` [PATCH 3/5] virtio-vdpa: support per vq dma device Jason Wang
2023-01-11 6:28 ` Jason Wang [this message]
2023-01-11 6:28 ` [PATCH 5/5] vdpa: mlx5: support per virtqueue " Jason Wang
2023-01-11 12:38 ` kernel test robot
2023-01-12 2:07 ` kernel test robot
[not found] ` <DM8PR12MB5400D84460E084D3459B49B1ABC09@DM8PR12MB5400.namprd12.prod.outlook.com>
2023-01-16 2:49 ` Jason Wang
[not found] ` <DM8PR12MB540054712BACEF34E065C2BBABFC9@DM8PR12MB5400.namprd12.prod.outlook.com>
2023-01-12 4:03 ` [PATCH 0/5] virtio_ring: per virtqueue DMA device Jason Wang
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