Subject: [PATCH v2 20/25] PCI: ftpci100: Use inbound resources for setup

From: Rob Herring <[email-masked]>
Date: Wed, 16 Oct 2019 15:06:42 -0500

Now that the helpers provide the inbound resources in the host bridge
'dma_ranges' resource list, convert Faraday ftpci100 host bridge to use
the resource list to setup the inbound addresses.

Cc: Lorenzo Pieralisi <[email-masked]>
Cc: Bjorn Helgaas <[email-masked]>
Reviewed-by: Andrew Murray <[email-masked]>
Signed-off-by: Rob Herring <[email-masked]>
---
 drivers/pci/controller/pci-ftpci100.c | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/drivers/pci/controller/pci-ftpci100.c b/drivers/pci/controller/pci-ftpci100.c
index 5824913e311b..e6b498de35e1 100644
--- a/drivers/pci/controller/pci-ftpci100.c
+++ b/drivers/pci/controller/pci-ftpci100.c
@@ -375,12 +375,11 @@ static int faraday_pci_setup_cascaded_irq(struct faraday_pci *p)
 	return 0;
 }
 
-static int faraday_pci_parse_map_dma_ranges(struct faraday_pci *p,
-					    struct device_node *np)
+static int faraday_pci_parse_map_dma_ranges(struct faraday_pci *p)
 {
-	struct of_pci_range range;
-	struct of_pci_range_parser parser;
 	struct device *dev = p->dev;
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(p);
+	struct resource_entry *entry;
 	u32 confreg[3] = {
 		FARADAY_PCI_MEM1_BASE_SIZE,
 		FARADAY_PCI_MEM2_BASE_SIZE,
@@ -389,19 +388,12 @@ static int faraday_pci_parse_map_dma_ranges(struct faraday_pci *p,
 	int i = 0;
 	u32 val;
 
-	if (of_pci_dma_range_parser_init(&parser, np)) {
-		dev_err(dev, "missing dma-ranges property\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Get the dma-ranges from the device tree
-	 */
-	for_each_of_pci_range(&parser, &range) {
-		u64 end = range.pci_addr + range.size - 1;
+	resource_list_for_each_entry(entry, &bridge->dma_ranges) {
+		u64 pci_addr = entry->res->start - entry->offset;
+		u64 end = entry->res->end - entry->offset;
 		int ret;
 
-		ret = faraday_res_to_memcfg(range.pci_addr, range.size, &val);
+		ret = faraday_res_to_memcfg(pci_addr, resource_size(entry->res), &val);
 		if (ret) {
 			dev_err(dev,
 				"DMA range %d: illegal MEM resource size\n", i);
@@ -409,7 +401,7 @@ static int faraday_pci_parse_map_dma_ranges(struct faraday_pci *p,
 		}
 
 		dev_info(dev, "DMA MEM%d BASE: 0x%016llx -> 0x%016llx config %08x\n",
-			 i + 1, range.pci_addr, end, val);
+			 i + 1, pci_addr, end, val);
 		if (i <= 2) {
 			faraday_raw_pci_write_config(p, 0, 0, confreg[i],
 						     4, val);
@@ -539,7 +531,7 @@ static int faraday_pci_probe(struct platform_device *pdev)
 			cur_bus_speed = PCI_SPEED_66MHz;
 	}
 
-	ret = faraday_pci_parse_map_dma_ranges(p, dev->of_node);
+	ret = faraday_pci_parse_map_dma_ranges(p);
 	if (ret)
 		return ret;
 
-- 
2.20.1

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