diff options
Diffstat (limited to 'arch/microblaze/pci/iomap.c')
| -rw-r--r-- | arch/microblaze/pci/iomap.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/microblaze/pci/iomap.c b/arch/microblaze/pci/iomap.c index 94149f5e6ebe..b2ee8ace9b6e 100644 --- a/arch/microblaze/pci/iomap.c +++ b/arch/microblaze/pci/iomap.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * ppc64 "iomap" interface implementation. * @@ -10,6 +11,42 @@ #include <linux/io.h> #include <asm/pci-bridge.h> +static DEFINE_SPINLOCK(hose_spinlock); +LIST_HEAD(hose_list); + +unsigned long isa_io_base; +EXPORT_SYMBOL(isa_io_base); + +static resource_size_t pcibios_io_size(const struct pci_controller *hose) +{ + return resource_size(&hose->io_resource); +} + +int pcibios_vaddr_is_ioport(void __iomem *address) +{ + int ret = 0; + struct pci_controller *hose; + resource_size_t size; + + spin_lock(&hose_spinlock); + list_for_each_entry(hose, &hose_list, list_node) { + size = pcibios_io_size(hose); + if (address >= hose->io_base_virt && + address < (hose->io_base_virt + size)) { + ret = 1; + break; + } + } + spin_unlock(&hose_spinlock); + return ret; +} + +/* Display the domain number in /proc */ +int pci_proc_domain(struct pci_bus *bus) +{ + return pci_domain_nr(bus); +} + void pci_iounmap(struct pci_dev *dev, void __iomem *addr) { if (isa_vaddr_is_ioport(addr)) |