linux-kernel - [PATCH v5 3/3] of/pci: mips: convert to common of_pci_range

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Date:	Wed, 10 Apr 2013 08:29:28 +0100
From:	Andrew Murray <Andrew.Murray@....com>
To:	rob.herring@...xeda.com
Cc:	jgunthorpe@...idianresearch.com, linux@....linux.org.uk,
	siva.kallam@...sung.com, linux-pci@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org, jg1.han@...sung.com,
	Liviu.Dudau@....com, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, kgene.kim@...sung.com,
	bhelgaas@...gle.com, suren.reddy@...sung.com,
	linux-arm-kernel@...ts.infradead.org, monstr@...str.eu,
	benh@...nel.crashing.org, paulus@...ba.org,
	grant.likely@...retlab.ca, thomas.petazzoni@...e-electrons.com,
	thierry.reding@...onic-design.de, thomas.abraham@...aro.org,
	arnd@...db.de, Andrew Murray <Andrew.Murray@....com>
Subject: [PATCH v5 3/3] of/pci: mips: convert to common of_pci_range_parser

This patch converts the pci_load_of_ranges function to use the new common
of_pci_range_parser.

Signed-off-by: Andrew Murray <Andrew.Murray@....com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
---
 arch/mips/pci/pci.c |   50 ++++++++++++++++----------------------------------
 1 files changed, 16 insertions(+), 34 deletions(-)

diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 0872f12..bee49a4 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -122,51 +122,33 @@ static void pcibios_scanbus(struct pci_controller *hose)
 #ifdef CONFIG_OF
 void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node)
 {
-	const __be32 *ranges;
-	int rlen;
-	int pna = of_n_addr_cells(node);
-	int np = pna + 5;
+	struct of_pci_range_range range;
+	struct of_pci_range_parser parser;
+	u32 res_type;
 
 	pr_info("PCI host bridge %s ranges:\n", node->full_name);
-	ranges = of_get_property(node, "ranges", &rlen);
-	if (ranges == NULL)
-		return;
 	hose->of_node = node;
 
-	while ((rlen -= np * 4) >= 0) {
-		u32 pci_space;
+	if (of_pci_range_parser(&parser, node))
+		return;
+
+	for_each_of_pci_range(&parser, &range) {
 		struct resource *res = NULL;
-		u64 addr, size;
-
-		pci_space = be32_to_cpup(&ranges[0]);
-		addr = of_translate_address(node, ranges + 3);
-		size = of_read_number(ranges + pna + 3, 2);
-		ranges += np;
-		switch ((pci_space >> 24) & 0x3) {
-		case 1:		/* PCI IO space */
+
+		res_type = range.flags & IORESOURCE_TYPE_BITS;
+		if (res_type == IORESOURCE_IO) {
 			pr_info("  IO 0x%016llx..0x%016llx\n",
-					addr, addr + size - 1);
+				range.addr, range.addr + range.size - 1);
 			hose->io_map_base =
-				(unsigned long)ioremap(addr, size);
+				(unsigned long)ioremap(range.addr, range.size);
 			res = hose->io_resource;
-			res->flags = IORESOURCE_IO;
-			break;
-		case 2:		/* PCI Memory space */
-		case 3:		/* PCI 64 bits Memory space */
+		} else if (res_type == IORESOURCE_MEM) {
 			pr_info(" MEM 0x%016llx..0x%016llx\n",
-					addr, addr + size - 1);
+				range.addr, range.addr + range.size - 1);
 			res = hose->mem_resource;
-			res->flags = IORESOURCE_MEM;
-			break;
-		}
-		if (res != NULL) {
-			res->start = addr;
-			res->name = node->full_name;
-			res->end = res->start + size - 1;
-			res->parent = NULL;
-			res->sibling = NULL;
-			res->child = NULL;
 		}
+		if (res != NULL)
+			of_pci_range_to_resource(&range, node, res);
 	}
 }
 #endif
-- 
1.7.0.4

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