From 0b0b0893d49b34201a6c4416b1a707b580b91e3d Mon Sep 17 00:00:00 2001 From: Liviu Dudau Date: Mon, 29 Sep 2014 15:29:25 +0100 Subject: of/pci: Fix the conversion of IO ranges into IO resources The ranges property for a host bridge controller in DT describes the mapping between the PCI bus address and the CPU physical address. The resources framework however expects that the IO resources start at a pseudo "port" address 0 (zero) and have a maximum size of IO_SPACE_LIMIT. The conversion from PCI ranges to resources failed to take that into account, returning a CPU physical address instead of a port number. Also fix all the drivers that depend on the old behaviour by fetching the CPU physical address based on the port number where it is being needed. Signed-off-by: Liviu Dudau Signed-off-by: Bjorn Helgaas Acked-by: Linus Walleij CC: Grant Likely CC: Rob Herring CC: Arnd Bergmann CC: Thierry Reding CC: Simon Horman CC: Catalin Marinas --- arch/arm/mach-integrator/pci_v3.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) (limited to 'arch/arm/mach-integrator') diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c index 05e1f73a1e8d..c186a17c2cff 100644 --- a/arch/arm/mach-integrator/pci_v3.c +++ b/arch/arm/mach-integrator/pci_v3.c @@ -660,6 +660,7 @@ static void __init pci_v3_preinit(void) { unsigned long flags; unsigned int temp; + phys_addr_t io_address = pci_pio_to_address(io_mem.start); pcibios_min_mem = 0x00100000; @@ -701,7 +702,7 @@ static void __init pci_v3_preinit(void) /* * Setup window 2 - PCI IO */ - v3_writel(V3_LB_BASE2, v3_addr_to_lb_base2(io_mem.start) | + v3_writel(V3_LB_BASE2, v3_addr_to_lb_base2(io_address) | V3_LB_BASE_ENABLE); v3_writew(V3_LB_MAP2, v3_addr_to_lb_map2(0)); @@ -742,6 +743,7 @@ static void __init pci_v3_preinit(void) static void __init pci_v3_postinit(void) { unsigned int pci_cmd; + phys_addr_t io_address = pci_pio_to_address(io_mem.start); pci_cmd = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE; @@ -758,7 +760,7 @@ static void __init pci_v3_postinit(void) "interrupt: %d\n", ret); #endif - register_isa_ports(non_mem.start, io_mem.start, 0); + register_isa_ports(non_mem.start, io_address, 0); } /* @@ -867,33 +869,32 @@ static int __init pci_v3_probe(struct platform_device *pdev) for_each_of_pci_range(&parser, &range) { if (!range.flags) { - of_pci_range_to_resource(&range, np, &conf_mem); + ret = of_pci_range_to_resource(&range, np, &conf_mem); conf_mem.name = "PCIv3 config"; } if (range.flags & IORESOURCE_IO) { - of_pci_range_to_resource(&range, np, &io_mem); + ret = of_pci_range_to_resource(&range, np, &io_mem); io_mem.name = "PCIv3 I/O"; } if ((range.flags & IORESOURCE_MEM) && !(range.flags & IORESOURCE_PREFETCH)) { non_mem_pci = range.pci_addr; non_mem_pci_sz = range.size; - of_pci_range_to_resource(&range, np, &non_mem); + ret = of_pci_range_to_resource(&range, np, &non_mem); non_mem.name = "PCIv3 non-prefetched mem"; } if ((range.flags & IORESOURCE_MEM) && (range.flags & IORESOURCE_PREFETCH)) { pre_mem_pci = range.pci_addr; pre_mem_pci_sz = range.size; - of_pci_range_to_resource(&range, np, &pre_mem); + ret = of_pci_range_to_resource(&range, np, &pre_mem); pre_mem.name = "PCIv3 prefetched mem"; } - } - if (!conf_mem.start || !io_mem.start || - !non_mem.start || !pre_mem.start) { - dev_err(&pdev->dev, "missing ranges in device node\n"); - return -EINVAL; + if (ret < 0) { + dev_err(&pdev->dev, "missing ranges in device node\n"); + return ret; + } } pci_v3.map_irq = of_irq_parse_and_map_pci; -- cgit