ARM: iop13xx: use fixed PCI i/o mapping

Move iop13xx PCI to fixed i/o mapping and remove io.h.

This changes the PCIe bus address to start at 0x10000. Let's hope this
works. If it does not, the alternative would be to revert the value we
write into OIOTVR to zero and set sys->io_offset to 64K.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 13 insertions, 24 deletions

diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 1bb905adb3dd..91f731a2957b 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -970,7 +970,6 @@ void __init iop13xx_pci_init(void)
 	__raw_writel(__raw_readl(IOP13XX_XBG_BECSR) & 3, IOP13XX_XBG_BECSR);
 
 	/* Setup the Min Address for PCI memory... */
-	pcibios_min_io = 0;
 	pcibios_min_mem = IOP13XX_PCIX_LOWER_MEM_BA;
 
 	/* if Linux is given control of an ATU
@@ -1003,7 +1002,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
 	if (nr > 1)
 		return 0;
 
-	res = kcalloc(2, sizeof(struct resource), GFP_KERNEL);
+	res = kzalloc(sizeof(struct resource), GFP_KERNEL);
 	if (!res)
 		panic("PCI: unable to alloc resources");
 
@@ -1042,17 +1041,13 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
 				  << IOP13XX_ATUX_PCIXSR_FUNC_NUM;
 		__raw_writel(pcixsr, IOP13XX_ATUX_PCIXSR);
 
-		res[0].start = IOP13XX_PCIX_LOWER_IO_BA + IOP13XX_PCIX_IO_BUS_OFFSET;
-		res[0].end   = IOP13XX_PCIX_UPPER_IO_BA;
-		res[0].name  = "IQ81340 ATUX PCI I/O Space";
-		res[0].flags = IORESOURCE_IO;
+		pci_ioremap_io(0, IOP13XX_PCIX_LOWER_IO_PA);
 
-		res[1].start = IOP13XX_PCIX_LOWER_MEM_RA;
-		res[1].end   = IOP13XX_PCIX_UPPER_MEM_RA;
-		res[1].name  = "IQ81340 ATUX PCI Memory Space";
-		res[1].flags = IORESOURCE_MEM;
+		res->start = IOP13XX_PCIX_LOWER_MEM_RA;
+		res->end   = IOP13XX_PCIX_UPPER_MEM_RA;
+		res->name  = "IQ81340 ATUX PCI Memory Space";
+		res->flags = IORESOURCE_MEM;
 		sys->mem_offset = IOP13XX_PCIX_MEM_OFFSET;
-		sys->io_offset = IOP13XX_PCIX_LOWER_IO_BA;
 		break;
 	case IOP13XX_INIT_ATU_ATUE:
 		/* Note: the function number field in the PCSR is ro */
@@ -1063,17 +1058,13 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
 
 		__raw_writel(pcsr, IOP13XX_ATUE_PCSR);
 
-		res[0].start = IOP13XX_PCIE_LOWER_IO_BA + IOP13XX_PCIE_IO_BUS_OFFSET;
-		res[0].end   = IOP13XX_PCIE_UPPER_IO_BA;
-		res[0].name  = "IQ81340 ATUE PCI I/O Space";
-		res[0].flags = IORESOURCE_IO;
+		pci_ioremap_io(SZ_64K, IOP13XX_PCIE_LOWER_IO_PA);
 
-		res[1].start = IOP13XX_PCIE_LOWER_MEM_RA;
-		res[1].end   = IOP13XX_PCIE_UPPER_MEM_RA;
-		res[1].name  = "IQ81340 ATUE PCI Memory Space";
-		res[1].flags = IORESOURCE_MEM;
+		res->start = IOP13XX_PCIE_LOWER_MEM_RA;
+		res->end   = IOP13XX_PCIE_UPPER_MEM_RA;
+		res->name  = "IQ81340 ATUE PCI Memory Space";
+		res->flags = IORESOURCE_MEM;
 		sys->mem_offset = IOP13XX_PCIE_MEM_OFFSET;
-		sys->io_offset = IOP13XX_PCIE_LOWER_IO_BA;
 		sys->map_irq = iop13xx_pcie_map_irq;
 		break;
 	default:
@@ -1081,11 +1072,9 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
 		return 0;
 	}
 
-	request_resource(&ioport_resource, &res[0]);
-	request_resource(&iomem_resource, &res[1]);
+	request_resource(&iomem_resource, res);
 
-	pci_add_resource_offset(&sys->resources, &res[0], sys->io_offset);
-	pci_add_resource_offset(&sys->resources, &res[1], sys->mem_offset);
+	pci_add_resource_offset(&sys->resources, res, sys->mem_offset);
 
 	return 1;
 }