diff options
Diffstat (limited to 'arch/arm/kernel/bios32.c')
| -rw-r--r-- | arch/arm/kernel/bios32.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index 35bb0a36a..3bd7a7358 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -7,6 +7,7 @@ */ #include <linux/kernel.h> #include <linux/pci.h> +#include <linux/errno.h> #include <linux/init.h> #include <asm/irq.h> @@ -73,6 +74,38 @@ struct pci_fixup pcibios_fixups[] = { }; /* + * Assign new address to PCI resource. We hope our resource information + * is complete. On the PC, we don't re-assign resources unless we are + * forced to do so. + * + * Expects start=0, end=size-1, flags=resource type. + */ + +int __init pcibios_assign_resource(struct pci_dev *dev, int i) +{ + struct resource *r = &dev->resource[i]; + struct resource *pr = pci_find_parent_resource(dev, r); + unsigned long size = r->end + 1; + unsigned long flags = 0; + + if (!pr) + return -EINVAL; + if (r->flags & IORESOURCE_IO) { + if (size > 0x100) + return -EFBIG; + if (allocate_resource(pr, r, size, 0x9000, ~0, 1024)) + return -EBUSY; + flags = PCI_BASE_ADDRESS_SPACE_IO; + } else { + if (allocate_resource(pr, r, size, 0x00100000, 0x7fffffff, size)) + return -EBUSY; + } + if (i < 6) + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4*i, r->start | flags); + return 0; +} + +/* * Assign an address to an I/O range. */ static void __init pcibios_fixup_io_addr(struct pci_dev *dev, struct resource *r, int idx) |