From e80a91ad302b3b66822756afc61f9f9c1658b9c9 Mon Sep 17 00:00:00 2001 From: Srinath Mannam Date: Fri, 3 May 2019 19:35:32 +0530 Subject: PCI: Add dma_ranges window list Add a dma_ranges field in PCI host bridge structure to hold resource entries list of memory regions in sorted order representing memory ranges that can be accessed through DMA transactions. Based-on-a-patch-by: Oza Pawandeep Signed-off-by: Srinath Mannam [lorenzo.pieralisi@arm.com: updated commit log] Signed-off-by: Lorenzo Pieralisi Signed-off-by: Bjorn Helgaas Reviewed-by: Oza Pawandeep Acked-by: Bjorn Helgaas --- drivers/pci/probe.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/pci/probe.c') diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 2ec0df04e0dc..2a651089a606 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -595,6 +595,7 @@ 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; /* @@ -623,6 +624,7 @@ 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; @@ -632,6 +634,7 @@ 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); } -- cgit v1.2.3