On Fri, Apr 12, 2019 at 08:43:33AM +0530, Srinath Mannam wrote:
> Add a dma_ranges field in PCI host bridge structure to hold resource
> entries list of memory regions in sorted order given through dma-ranges
> DT property.
>
> While initializing IOMMU domain of PCI EPs connected to that host bridge
> This list of resources will be processed and IOVAs for the address holes
> will be reserved.
s/bridge This list/bridge, this list/
> Signed-off-by: Srinath Mannam <srinath.man...@broadcom.com>
> Based-on-patch-by: Oza Pawandeep <oza....@broadcom.com>
> Reviewed-by: Oza Pawandeep <p...@codeaurora.org>
Acked-by: Bjorn Helgaas <bhelg...@google.com>
> ---
> drivers/pci/probe.c | 3 +++
> include/linux/pci.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 257b9f6..ce5505f 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -544,6 +544,7 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv)
> return NULL;
>
> INIT_LIST_HEAD(&bridge->windows);
> + INIT_LIST_HEAD(&bridge->dma_ranges);
> bridge->dev.release = pci_release_host_bridge_dev;
>
> /*
> @@ -572,6 +573,7 @@ struct pci_host_bridge *devm_pci_alloc_host_bridge(struct
> device *dev,
> return NULL;
>
> INIT_LIST_HEAD(&bridge->windows);
> + INIT_LIST_HEAD(&bridge->dma_ranges);
> bridge->dev.release = devm_pci_release_host_bridge_dev;
>
> return bridge;
> @@ -581,6 +583,7 @@ EXPORT_SYMBOL(devm_pci_alloc_host_bridge);
> void pci_free_host_bridge(struct pci_host_bridge *bridge)
> {
> pci_free_resource_list(&bridge->windows);
> + pci_free_resource_list(&bridge->dma_ranges);
>
> kfree(bridge);
> }
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 65f1d8c..016a044 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -487,6 +487,7 @@ struct pci_host_bridge {
> void *sysdata;
> int busnr;
> struct list_head windows; /* resource_entry */
> + struct list_head dma_ranges; /* dma ranges resource list */
> u8 (*swizzle_irq)(struct pci_dev *, u8 *); /* Platform IRQ swizzler */
> int (*map_irq)(const struct pci_dev *, u8, u8);
> void (*release_fn)(struct pci_host_bridge *);
> --
> 2.7.4
>
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