Patchwork [v5,3/3] of/pci: mips: convert to common of_pci_range_parser

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Submitter Andrew Murray
Date April 10, 2013, 7:29 a.m.
Message ID <1365578969-30966-4-git-send-email-Andrew.Murray@arm.com>
Download mbox | patch
Permalink /patch/235322/
State Not Applicable
Headers show

Comments

Andrew Murray - April 10, 2013, 7:29 a.m.
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@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
---
 arch/mips/pci/pci.c |   50 ++++++++++++++++----------------------------------
 1 files changed, 16 insertions(+), 34 deletions(-)
Rob Herring - April 10, 2013, 6:28 p.m.
On 04/10/2013 02:29 AM, Andrew Murray wrote:
> 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@arm.com>
> Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>

Reviewed-by: Rob Herring <rob.herring@calxeda.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
> 

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Patch

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