Displaying 20 results from an estimated 103 matches for "dma_unmap_singl".
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dma_unmap_single
2019 Oct 13
2
[PATCH] tools/virtio: Fix build
...le mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
index f91aeb5fe571..db96cb4bf877 100644
--- a/tools/virtio/linux/dma-mapping.h
+++ b/tools/virtio/linux/dma-mapping.h
@@ -29,4 +29,6 @@ enum dma_data_direction {
#define dma_unmap_single(...) do { } while (0)
#define dma_unmap_page(...) do { } while (0)
+#define dma_max_mapping_size(d) 0
+
#endif
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6683b4a70b05..ccf321173210 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -1...
2019 Oct 13
2
[PATCH] tools/virtio: Fix build
...le mode 100644
index 000000000000..e69de29bb2d1
diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
index f91aeb5fe571..db96cb4bf877 100644
--- a/tools/virtio/linux/dma-mapping.h
+++ b/tools/virtio/linux/dma-mapping.h
@@ -29,4 +29,6 @@ enum dma_data_direction {
#define dma_unmap_single(...) do { } while (0)
#define dma_unmap_page(...) do { } while (0)
+#define dma_max_mapping_size(d) 0
+
#endif
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
index 6683b4a70b05..ccf321173210 100644
--- a/tools/virtio/linux/kernel.h
+++ b/tools/virtio/linux/kernel.h
@@ -1...
2013 Aug 23
1
[PATCH] VMXNET3: Add support for virtual IOMMU
...0644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -313,10 +313,10 @@ vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
struct pci_dev *pdev)
{
if (tbi->map_type == VMXNET3_MAP_SINGLE)
- pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
+ dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len,
PCI_DMA_TODEVICE);
else if (tbi->map_type == VMXNET3_MAP_PAGE)
- pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
+ dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len,
PCI_DMA_TODEVICE);
else
BUG_ON(tbi-...
2013 Aug 23
1
[PATCH] VMXNET3: Add support for virtual IOMMU
...0644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -313,10 +313,10 @@ vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi,
struct pci_dev *pdev)
{
if (tbi->map_type == VMXNET3_MAP_SINGLE)
- pci_unmap_single(pdev, tbi->dma_addr, tbi->len,
+ dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len,
PCI_DMA_TODEVICE);
else if (tbi->map_type == VMXNET3_MAP_PAGE)
- pci_unmap_page(pdev, tbi->dma_addr, tbi->len,
+ dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len,
PCI_DMA_TODEVICE);
else
BUG_ON(tbi-...
2014 Sep 02
1
[PATCH] VMXNET3: Check for map error in vmxnet3_set_mc
...amp; VMXNET3_RXM_MCAST)) {
rxConf->mfTableLen = 0;
rxConf->mfTablePA = 0;
@@ -2091,11 +2093,11 @@ vmxnet3_set_mc(struct net_device *netdev)
VMXNET3_CMD_UPDATE_MAC_FILTERS);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
- if (new_table) {
+ if (new_table_pa)
dma_unmap_single(&adapter->pdev->dev, new_table_pa,
rxConf->mfTableLen, PCI_DMA_TODEVICE);
+ if (new_table)
kfree(new_table);
- }
}
void
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 29ee77f2..3759479 100644
--- a/drivers/net/vmxnet3/vmxnet3_int....
2014 Sep 02
1
[PATCH] VMXNET3: Check for map error in vmxnet3_set_mc
...amp; VMXNET3_RXM_MCAST)) {
rxConf->mfTableLen = 0;
rxConf->mfTablePA = 0;
@@ -2091,11 +2093,11 @@ vmxnet3_set_mc(struct net_device *netdev)
VMXNET3_CMD_UPDATE_MAC_FILTERS);
spin_unlock_irqrestore(&adapter->cmd_lock, flags);
- if (new_table) {
+ if (new_table_pa)
dma_unmap_single(&adapter->pdev->dev, new_table_pa,
rxConf->mfTableLen, PCI_DMA_TODEVICE);
+ if (new_table)
kfree(new_table);
- }
}
void
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 29ee77f2..3759479 100644
--- a/drivers/net/vmxnet3/vmxnet3_int....
2017 Feb 08
0
FW: Question about /patch/9251925/
..._single(tx_ring->dev, skb->data, size,
DMA_TO_DEVICE);
......
dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
DMA_TO_DEVICE);
......
}
i40e_clean_tx_irq()
{
......
/* unmap skb header data */
dma_unmap_single(tx_ring->dev,
dma_unmap_addr(tx_buf, dma),
dma_unmap_len(tx_buf, len),
DMA_TO_DEVICE);
/* clear tx_buffer data */
tx_buf->skb = NULL;
dma_unmap_len_set(tx_buf, len, 0);
.........
2017 Feb 08
0
FW: Question about /patch/9251925/
..._single(tx_ring->dev, skb->data, size,
DMA_TO_DEVICE);
......
dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
DMA_TO_DEVICE);
......
}
i40e_clean_tx_irq()
{
......
/* unmap skb header data */
dma_unmap_single(tx_ring->dev,
dma_unmap_addr(tx_buf, dma),
dma_unmap_len(tx_buf, len),
DMA_TO_DEVICE);
/* clear tx_buffer data */
tx_buf->skb = NULL;
dma_unmap_len_set(tx_buf, len, 0);
.........
2023 Feb 20
2
[PATCH vhost 01/10] virtio_ring: split: refactor virtqueue_add_split() for premapped
...scatterlist *sg;
> + unsigned int n;
> +
> + for (n = 0; n < out_sgs; n++) {
> + for (sg = sgs[n]; sg; sg = sg_next(sg)) {
> + if (!sg->dma_address)
> + return;
> +
> + dma_unmap_single(vring_dma_dev(vq), sg->dma_address,
> + sg->length, DMA_TO_DEVICE);
> + }
> + }
> + for (; n < (out_sgs + in_sgs); n++) {
> + for (sg = sgs[n]; sg; sg = sg_next(sg)) {
> +...
2018 Nov 27
2
[PATCH v5 5/7] iommu: Add virtio-iommu driver
...gt; sleep in the iommu_map() or iommu_unmap() path.
>
> The problem is the same
> for all IOMMU drivers. That's because the DMA API allows drivers to call
> some functions with interrupts disabled. For example
> Documentation/DMA-API-HOWTO.txt allows dma_alloc_coherent() and
> dma_unmap_single() to be called in interrupt context.
In fact I don't really understand how it's supposed to
work at all: you only sync when ring is full.
So host may not have seen your map request if ring
is not full.
Why is it safe to use the address with a device then?
> > As kick is vm exit, k...
2018 Nov 27
2
[PATCH v5 5/7] iommu: Add virtio-iommu driver
...gt; sleep in the iommu_map() or iommu_unmap() path.
>
> The problem is the same
> for all IOMMU drivers. That's because the DMA API allows drivers to call
> some functions with interrupts disabled. For example
> Documentation/DMA-API-HOWTO.txt allows dma_alloc_coherent() and
> dma_unmap_single() to be called in interrupt context.
In fact I don't really understand how it's supposed to
work at all: you only sync when ring is full.
So host may not have seen your map request if ring
is not full.
Why is it safe to use the address with a device then?
> > As kick is vm exit, k...
2018 Dec 07
0
[RFC 3/3] virtio_ring: use new vring flags
...rtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -371,17 +371,17 @@ static void vring_unmap_one_split(const struct vring_virtqueue *vq,
flags = virtio16_to_cpu(vq->vq.vdev, desc->flags);
- if (flags & VRING_DESC_F_INDIRECT) {
+ if (flags & BIT(VRING_SPLIT_DESC_F_INDIRECT)) {
dma_unmap_single(vring_dma_dev(vq),
virtio64_to_cpu(vq->vq.vdev, desc->addr),
virtio32_to_cpu(vq->vq.vdev, desc->len),
- (flags & VRING_DESC_F_WRITE) ?
+ (flags & BIT(VRING_SPLIT_DESC_F_WRITE)) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
} else {
dma_unmap_page(vring_dma_...
2018 Nov 27
2
[PATCH v5 5/7] iommu: Add virtio-iommu driver
...t; >>
> >> The problem is the same
> >> for all IOMMU drivers. That's because the DMA API allows drivers to call
> >> some functions with interrupts disabled. For example
> >> Documentation/DMA-API-HOWTO.txt allows dma_alloc_coherent() and
> >> dma_unmap_single() to be called in interrupt context.
> >
> > In fact I don't really understand how it's supposed to
> > work at all: you only sync when ring is full.
> > So host may not have seen your map request if ring
> > is not full.
> > Why is it safe to use the a...
2018 Nov 27
2
[PATCH v5 5/7] iommu: Add virtio-iommu driver
...t; >>
> >> The problem is the same
> >> for all IOMMU drivers. That's because the DMA API allows drivers to call
> >> some functions with interrupts disabled. For example
> >> Documentation/DMA-API-HOWTO.txt allows dma_alloc_coherent() and
> >> dma_unmap_single() to be called in interrupt context.
> >
> > In fact I don't really understand how it's supposed to
> > work at all: you only sync when ring is full.
> > So host may not have seen your map request if ring
> > is not full.
> > Why is it safe to use the a...
2019 Oct 13
2
[PATCH] tools/virtio: Fix build
...t; diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
>> index f91aeb5fe571..db96cb4bf877 100644
>> --- a/tools/virtio/linux/dma-mapping.h
>> +++ b/tools/virtio/linux/dma-mapping.h
>> @@ -29,4 +29,6 @@ enum dma_data_direction {
>> #define dma_unmap_single(...) do { } while (0)
>> #define dma_unmap_page(...) do { } while (0)
>>
>> +#define dma_max_mapping_size(d) 0
>> +
>> #endif
>> diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
>> index 6683b4a70b05..ccf321173210 100644
>> --...
2019 Oct 13
2
[PATCH] tools/virtio: Fix build
...t; diff --git a/tools/virtio/linux/dma-mapping.h b/tools/virtio/linux/dma-mapping.h
>> index f91aeb5fe571..db96cb4bf877 100644
>> --- a/tools/virtio/linux/dma-mapping.h
>> +++ b/tools/virtio/linux/dma-mapping.h
>> @@ -29,4 +29,6 @@ enum dma_data_direction {
>> #define dma_unmap_single(...) do { } while (0)
>> #define dma_unmap_page(...) do { } while (0)
>>
>> +#define dma_max_mapping_size(d) 0
>> +
>> #endif
>> diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h
>> index 6683b4a70b05..ccf321173210 100644
>> --...
2018 Nov 08
0
[PATCH net-next v2 3/5] virtio_ring: add packed ring support
...t; + struct vring_desc_state_packed *state)
> > +{
> > + u16 flags;
> > +
> > + if (!vring_use_dma_api(vq->vq.vdev))
> > + return;
> > +
> > + flags = state->flags;
> > +
> > + if (flags & VRING_DESC_F_INDIRECT) {
> > + dma_unmap_single(vring_dma_dev(vq),
> > + state->addr, state->len,
> > + (flags & VRING_DESC_F_WRITE) ?
> > + DMA_FROM_DEVICE : DMA_TO_DEVICE);
> > + } else {
> > + dma_unmap_page(vring_dma_dev(vq),
> > + state->addr, state->len,
> > +...
2018 Nov 07
2
[PATCH net-next v2 3/5] virtio_ring: add packed ring support
..._state_packed(const struct vring_virtqueue *vq,
> + struct vring_desc_state_packed *state)
> +{
> + u16 flags;
> +
> + if (!vring_use_dma_api(vq->vq.vdev))
> + return;
> +
> + flags = state->flags;
> +
> + if (flags & VRING_DESC_F_INDIRECT) {
> + dma_unmap_single(vring_dma_dev(vq),
> + state->addr, state->len,
> + (flags & VRING_DESC_F_WRITE) ?
> + DMA_FROM_DEVICE : DMA_TO_DEVICE);
> + } else {
> + dma_unmap_page(vring_dma_dev(vq),
> + state->addr, state->len,
> + (flags & VRING_DESC_F...
2018 Nov 07
2
[PATCH net-next v2 3/5] virtio_ring: add packed ring support
..._state_packed(const struct vring_virtqueue *vq,
> + struct vring_desc_state_packed *state)
> +{
> + u16 flags;
> +
> + if (!vring_use_dma_api(vq->vq.vdev))
> + return;
> +
> + flags = state->flags;
> +
> + if (flags & VRING_DESC_F_INDIRECT) {
> + dma_unmap_single(vring_dma_dev(vq),
> + state->addr, state->len,
> + (flags & VRING_DESC_F_WRITE) ?
> + DMA_FROM_DEVICE : DMA_TO_DEVICE);
> + } else {
> + dma_unmap_page(vring_dma_dev(vq),
> + state->addr, state->len,
> + (flags & VRING_DESC_F...
2018 Dec 10
1
[PATCH v5 5/7] iommu: Add virtio-iommu driver
...oblem is the same
> >>>> for all IOMMU drivers. That's because the DMA API allows drivers to call
> >>>> some functions with interrupts disabled. For example
> >>>> Documentation/DMA-API-HOWTO.txt allows dma_alloc_coherent() and
> >>>> dma_unmap_single() to be called in interrupt context.
> >>>
> >>> In fact I don't really understand how it's supposed to
> >>> work at all: you only sync when ring is full.
> >>> So host may not have seen your map request if ring
> >>> is not full...