Displaying 20 results from an estimated 257 matches for "dma_to_device".
2020 Sep 14
2
[PATCH 07/17] 53c700: improve non-coherent DMA handling
...rs/scsi/53c700.c
@@ -269,6 +269,20 @@ NCR_700_get_SXFER(struct scsi_device *SDp)
spi_period(SDp->sdev_target));
}
+static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_TO_DEVICE);
+}
+
+static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_FROM_DEVICE);
+}
+
struct Scsi_Host *
NCR_700_detect(struct scsi_host_template *tpnt,
struct NCR_700_Host_P...
2020 Aug 19
0
[PATCH 07/28] 53c700: improve non-coherent DMA handling
...rs/scsi/53c700.c
@@ -269,6 +269,20 @@ NCR_700_get_SXFER(struct scsi_device *SDp)
spi_period(SDp->sdev_target));
}
+static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_TO_DEVICE);
+}
+
+static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_FROM_DEVICE);
+}
+
struct Scsi_Host *
NCR_700_detect(struct scsi_host_template *tpnt,
struct NCR_700_Host_P...
2023 May 17
2
[PATCH vhost v9 01/12] virtio_ring: put mapping error check in vring_map_one_sg
...+ return 0;
}
static dma_addr_t vring_map_single(const struct vring_virtqueue *vq,
@@ -588,8 +593,9 @@ static inline int virtqueue_add_split(struct virtqueue *_vq,
for (n = 0; n < out_sgs; n++) {
for (sg = sgs[n]; sg; sg = sg_next(sg)) {
- dma_addr_t addr = vring_map_one_sg(vq, sg, DMA_TO_DEVICE);
- if (vring_mapping_error(vq, addr))
+ dma_addr_t addr;
+
+ if (vring_map_one_sg(vq, sg, DMA_TO_DEVICE, &addr))
goto unmap_release;
prev = i;
@@ -603,8 +609,9 @@ static inline int virtqueue_add_split(struct virtqueue *_vq,
}
for (; n < (out_sgs + in_sgs); n++) {
for...
2020 Sep 08
2
[PATCH] drm/virtio: drop quirks handling
...int si, ret;
@@ -162,15 +161,11 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
return -EINVAL;
}
- if (use_dma_api) {
- shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
- shmem->pages->sgl,
- shmem->pages->nents,
- DMA_TO_DEVICE);
- *nents = shmem->mapped;
- } else {
- *nents = shmem->pages->nents;
- }
+ shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
+ shmem->pages->sgl,
+ shmem->pages->nents,
+ DMA_TO_DEVICE);
+ *nents = shmem->mapped;
*ents = kmalloc_array(*ne...
2020 Sep 08
2
[PATCH] drm/virtio: drop quirks handling
...int si, ret;
@@ -162,15 +161,11 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
return -EINVAL;
}
- if (use_dma_api) {
- shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
- shmem->pages->sgl,
- shmem->pages->nents,
- DMA_TO_DEVICE);
- *nents = shmem->mapped;
- } else {
- *nents = shmem->pages->nents;
- }
+ shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
+ shmem->pages->sgl,
+ shmem->pages->nents,
+ DMA_TO_DEVICE);
+ *nents = shmem->mapped;
*ents = kmalloc_array(*ne...
2020 Sep 15
0
[PATCH 07/18] 53c700: improve non-coherent DMA handling
...rs/scsi/53c700.c
@@ -269,6 +269,20 @@ NCR_700_get_SXFER(struct scsi_device *SDp)
spi_period(SDp->sdev_target));
}
+static inline void dma_sync_to_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_TO_DEVICE);
+}
+
+static inline void dma_sync_from_dev(struct NCR_700_Host_Parameters *h,
+ void *addr, size_t size)
+{
+ if (h->noncoherent)
+ dma_cache_sync(h->dev, addr, size, DMA_FROM_DEVICE);
+}
+
struct Scsi_Host *
NCR_700_detect(struct scsi_host_template *tpnt,
struct NCR_700_Host_P...
2017 Feb 08
0
FW: Question about /patch/9251925/
...packet
Look forward to your reply.
Thanks,
Jason
BTW:
*1. Intel Ethernet Controller XL710(40G) driver:*
TX:
i40e_lan_xmit_frame
->i40e_xmit_frame_ring()
->i40e_tx_map()
{
......
dma = dma_map_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,...
2017 Feb 08
0
FW: Question about /patch/9251925/
...packet
Look forward to your reply.
Thanks,
Jason
BTW:
*1. Intel Ethernet Controller XL710(40G) driver:*
TX:
i40e_lan_xmit_frame
->i40e_xmit_frame_ring()
->i40e_tx_map()
{
......
dma = dma_map_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,...
2013 Oct 25
2
[PATCH] vhost/scsi: Fix incorrect usage of get_user_pages_fast write parameter
From: Nicholas Bellinger <nab at linux-iscsi.org>
This patch addresses a long-standing bug where the get_user_pages_fast()
write parameter used for setting the underlying page table entry permission
bits was incorrectly set to write=1 for data_direction=DMA_TO_DEVICE, and
passed into get_user_pages_fast() via vhost_scsi_map_iov_to_sgl().
However, this parameter is intended to signal WRITEs to pinned userspace
PTEs for the virtio-scsi DMA_FROM_DEVICE -> READ payload case, and *not*
for the virtio-scsi DMA_TO_DEVICE -> WRITE payload case.
This bug would m...
2013 Oct 25
2
[PATCH] vhost/scsi: Fix incorrect usage of get_user_pages_fast write parameter
From: Nicholas Bellinger <nab at linux-iscsi.org>
This patch addresses a long-standing bug where the get_user_pages_fast()
write parameter used for setting the underlying page table entry permission
bits was incorrectly set to write=1 for data_direction=DMA_TO_DEVICE, and
passed into get_user_pages_fast() via vhost_scsi_map_iov_to_sgl().
However, this parameter is intended to signal WRITEs to pinned userspace
PTEs for the virtio-scsi DMA_FROM_DEVICE -> READ payload case, and *not*
for the virtio-scsi DMA_TO_DEVICE -> WRITE payload case.
This bug would m...
2020 Sep 08
0
[PATCH] drm/virtio: drop quirks handling
...atic int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev,
> return -EINVAL;
> }
>
> - if (use_dma_api) {
> - shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
> - shmem->pages->sgl,
> - shmem->pages->nents,
> - DMA_TO_DEVICE);
> - *nents = shmem->mapped;
> - } else {
> - *nents = shmem->pages->nents;
> - }
> + shmem->mapped = dma_map_sg(vgdev->vdev->dev.parent,
> + shmem->pages->sgl,
> + shmem->pages->nents,
> + DMA_TO_DEVICE);
> + *nents = sh...
2020 Sep 15
0
[PATCH 09/18] sgiwd93: convert to dma_alloc_noncoherent
Use the new non-coherent DMA API including proper ownership transfers.
This also means we can allocate the memory as DMA_TO_DEVICE instead
of bidirectional.
Signed-off-by: Christoph Hellwig <hch at lst.de>
---
drivers/scsi/sgiwd93.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index 3bdf0deb8f1529..cf1030c9dda17f 100644
--- a/drivers/...
2020 Aug 19
0
[PATCH 28/28] nvme-pci: use dma_alloc_pages backed dmapools
...->npages = 1;
}
@@ -630,6 +630,11 @@ static blk_status_t nvme_pci_setup_prps(struct nvme_dev *dev,
for (;;) {
if (i == NVME_CTRL_PAGE_SIZE >> 3) {
__le64 *old_prp_list = prp_list;
+
+ dma_sync_single_for_device(dev->dev, prp_dma,
+ i * sizeof(*prp_list),
+ DMA_TO_DEVICE);
+
prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma);
if (!prp_list)
return BLK_STS_RESOURCE;
@@ -653,6 +658,8 @@ static blk_status_t nvme_pci_setup_prps(struct nvme_dev *dev,
dma_len = sg_dma_len(sg);
}
+ dma_sync_single_for_device(dev->dev, prp_dma, i * sizeof(*prp...
2023 Mar 02
1
[PATCH vhost v1 02/12] virtio_ring: split: separate DMA codes
...struct scatterlist *sgs[],
+ unsigned int total_sg,
+ unsigned int out_sgs,
+ unsigned int in_sgs)
+{
+ struct scatterlist *sg;
+ unsigned int n;
+
+ for (n = 0; n < out_sgs; n++) {
+ for (sg = sgs[n]; sg; sg = sg_next(sg)) {
+ dma_addr_t addr = vring_map_one_sg(vq, sg, DMA_TO_DEVICE);
+
+ if (vring_mapping_error(vq, addr))
+ return -ENOMEM;
+
+ sg->dma_address = addr;
+ }
+ }
+
+ for (; n < (out_sgs + in_sgs); n++) {
+ for (sg = sgs[n]; sg; sg = sg_next(sg)) {
+ dma_addr_t addr = vring_map_one_sg(vq, sg, DMA_FROM_DEVICE);
+
+ if (vring_mapping_error(vq, addr...
2020 Sep 15
0
[PATCH 10/18] hal2: convert to dma_alloc_noncoherent
...codec->buffer_dma = buffer_dma;
@@ -470,20 +471,22 @@ static int hal2_alloc_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec)
desc_dma : desc_dma + (i + 1) * sizeof(struct hal2_desc);
desc++;
}
- dma_cache_sync(dev, codec->desc, count * sizeof(struct hal2_desc),
- DMA_TO_DEVICE);
+ dma_sync_single_for_device(dev, codec->desc_dma,
+ count * sizeof(struct hal2_desc),
+ DMA_BIDIRECTIONAL);
codec->desc_count = count;
return 0;
}
-static void hal2_free_dmabuf(struct snd_hal2 *hal2, struct hal2_codec *codec)
+static void hal2_free_dmabuf(struct snd_hal2...
2020 Sep 14
0
[PATCH 07/17] 53c700: improve non-coherent DMA handling
...meters {
> for(i=0; i< (sizeof(A_##symbol##_used) / sizeof(__u32));
> i++) { \
> __u32 val =
> bS_to_cpu((script)[A_##symbol##_used[i]]) + da; \
> (script)[A_##symbol##_used[i]] = bS_to_host(val); \
> - dma_cache_sync((dev),
> &(script)[A_##symbol##_used[i]], 4, DMA_TO_DEVICE); \
> + dma_sync_to_dev((dev),
> &(script)[A_##symbol##_used[i]], 4); \
> DEBUG((" script, patching %s at %d to %pad\n", \
> #symbol, A_##symbol##_used[i], &da)); \
> } \
> @@ -441,7 +442,7 @@ struct NCR_700_Host_Parameters {
> dma_addr_t da...
2020 Sep 02
1
[PATCH 22/28] sgiseeq: convert from dma_cache_sync to dma_sync_single_for_device
...->dev.parent, VIRT_TO_DMA(sp, addr),
+ sizeof(struct sgiseeq_rx_desc), DMA_FROM_DEVICE);
}
static inline void dma_sync_desc_dev(struct net_device *dev, void *addr)
{
- dma_cache_sync(dev->dev.parent, addr, sizeof(struct sgiseeq_rx_desc),
- DMA_TO_DEVICE);
+ struct sgiseeq_private *sp = netdev_priv(dev);
+
+ dma_sync_single_for_device(dev->dev.parent, VIRT_TO_DMA(sp, addr),
+ sizeof(struct sgiseeq_rx_desc), DMA_TO_DEVICE);
}
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a...
2023 Feb 20
2
[PATCH vhost 01/10] virtio_ring: split: refactor virtqueue_add_split() for premapped
...dx;
> - int head;
> - bool indirect;
> + unsigned int n;
>
> - START_USE(vq);
> + for (n = 0; n < out_sgs; n++) {
> + for (sg = sgs[n]; sg; sg = sg_next(sg)) {
> + dma_addr_t addr = vring_map_one_sg(vq, sg, DMA_TO_DEVICE);
> +
> + if (vring_mapping_error(vq, addr))
> + return -ENOMEM;
> +
> + sg->dma_address = addr;
> + }
> + }
> + for (; n < (out_sgs + in_sgs); n++) {
> +...
2018 Dec 07
0
[RFC 3/3] virtio_ring: use new vring 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_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 :...
2023 Mar 21
1
[PATCH vhost v3 01/11] virtio_ring: split: separate dma codes
...+{
+ struct scatterlist *sg;
+ unsigned int n;
+
+ if (!vq->use_dma_api)
+ return;
+
+ for (n = 0; n < out_sgs; n++) {
+ for (sg = sgs[n]; sg; sg = sg_next(sg)) {
+ if (!sg->dma_address)
+ return;
+
+ dma_unmap_page(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)) {
+ if (!sg->dma_address)
+ return;
+
+ dma_unmap_page(vring_dma_dev(vq), sg->dma_address,
+ sg->length, DMA_FROM_DEVICE);
+ }
+ }
+}
+
+static int virtqueue_map_sgs(struct...