diff options
Diffstat (limited to 'arch/arm/kernel/bios32.c')
| -rw-r--r-- | arch/arm/kernel/bios32.c | 54 |
1 files changed, 49 insertions, 5 deletions
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index 9cf16b83bbb..9b722612553 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -13,6 +13,7 @@ #include <linux/io.h> #include <asm/mach-types.h> +#include <asm/mach/map.h> #include <asm/mach/pci.h> static int debug_pci; @@ -414,6 +415,38 @@ static int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) return irq; } +static int __init pcibios_init_resources(int busnr, struct pci_sys_data *sys) +{ + int ret; + struct pci_host_bridge_window *window; + + if (list_empty(&sys->resources)) { + pci_add_resource_offset(&sys->resources, + &iomem_resource, sys->mem_offset); + } + + list_for_each_entry(window, &sys->resources, list) { + if (resource_type(window->res) == IORESOURCE_IO) + return 0; + } + + sys->io_res.start = (busnr * SZ_64K) ? : pcibios_min_io; + sys->io_res.end = (busnr + 1) * SZ_64K - 1; + sys->io_res.flags = IORESOURCE_IO; + sys->io_res.name = sys->io_res_name; + sprintf(sys->io_res_name, "PCI%d I/O", busnr); + + ret = request_resource(&ioport_resource, &sys->io_res); + if (ret) { + pr_err("PCI: unable to allocate I/O port region (%d)\n", ret); + return ret; + } + pci_add_resource_offset(&sys->resources, &sys->io_res, + sys->io_offset); + + return 0; +} + static void __init pcibios_init_hw(struct hw_pci *hw, struct list_head *head) { struct pci_sys_data *sys = NULL; @@ -436,11 +469,10 @@ static void __init pcibios_init_hw(struct hw_pci *hw, struct list_head *head) ret = hw->setup(nr, sys); if (ret > 0) { - if (list_empty(&sys->resources)) { - pci_add_resource_offset(&sys->resources, - &ioport_resource, sys->io_offset); - pci_add_resource_offset(&sys->resources, - &iomem_resource, sys->mem_offset); + ret = pcibios_init_resources(nr, sys); + if (ret) { + kfree(sys); + break; } if (hw->scan) @@ -618,3 +650,15 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, return 0; } + +void __init pci_map_io_early(unsigned long pfn) +{ + struct map_desc pci_io_desc = { + .virtual = PCI_IO_VIRT_BASE, + .type = MT_DEVICE, + .length = SZ_64K, + }; + + pci_io_desc.pfn = pfn; + iotable_init(&pci_io_desc, 1); +} |