diff mbox series

[v12,4/4] iommu: dma: Use of_iommu_get_resv_regions()

Message ID 20221117185424.2359687-5-thierry.reding@gmail.com
State Changes Requested
Headers show
Series iommu: Support mappings/reservations in reserved-memory regions | expand

Commit Message

Thierry Reding Nov. 17, 2022, 6:54 p.m. UTC 
From: Thierry Reding <treding@nvidia.com>

For device tree nodes, use the standard of_iommu_get_resv_regions()
implementation to obtain the reserved memory regions associated with a
device.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/iommu/dma-iommu.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Robin Murphy Dec. 5, 2022, 6:37 p.m. UTC | #1 
On 2022-11-17 18:54, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
> 
> For device tree nodes, use the standard of_iommu_get_resv_regions()
> implementation to obtain the reserved memory regions associated with a
> device.

Acked-by: Robin Murphy <robin.murphy@arm.com>

> Cc: Rob Herring <robh+dt@kernel.org>
> Cc: Frank Rowand <frowand.list@gmail.com>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
>   drivers/iommu/dma-iommu.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
> index 9297b741f5e8..709b05d3aad2 100644
> --- a/drivers/iommu/dma-iommu.c
> +++ b/drivers/iommu/dma-iommu.c
> @@ -23,6 +23,7 @@
>   #include <linux/memremap.h>
>   #include <linux/mm.h>
>   #include <linux/mutex.h>
> +#include <linux/of_iommu.h>
>   #include <linux/pci.h>
>   #include <linux/scatterlist.h>
>   #include <linux/spinlock.h>
> @@ -391,6 +392,8 @@ void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
>   	if (!is_of_node(dev_iommu_fwspec_get(dev)->iommu_fwnode))
>   		iort_iommu_get_resv_regions(dev, list);
>   
> +	if (dev->of_node)
> +		of_iommu_get_resv_regions(dev, list);
>   }
>   EXPORT_SYMBOL(iommu_dma_get_resv_regions);
>
diff mbox series

Patch

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 9297b741f5e8..709b05d3aad2 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -23,6 +23,7 @@ 
 #include <linux/memremap.h>
 #include <linux/mm.h>
 #include <linux/mutex.h>
+#include <linux/of_iommu.h>
 #include <linux/pci.h>
 #include <linux/scatterlist.h>
 #include <linux/spinlock.h>
@@ -391,6 +392,8 @@  void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list)
 	if (!is_of_node(dev_iommu_fwspec_get(dev)->iommu_fwnode))
 		iort_iommu_get_resv_regions(dev, list);
 
+	if (dev->of_node)
+		of_iommu_get_resv_regions(dev, list);
 }
 EXPORT_SYMBOL(iommu_dma_get_resv_regions);