static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn)
{
struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus);
if (cfg && cfg->virt)
return cfg->virt + (PCI_MMCFG_BUS_OFFSET(bus) | (devfn << 12));
return NULL;
}
/*
* Functions for accessing PCI configuration space with MMCONFIG accesses
*/
static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
{
struct pci_mmcfg_region *cfg = pci_mmconfig_lookup(seg, bus);
if (cfg)
return cfg->address;
return 0;
}
void __iomem *
pci_mcfg_dev_base(struct pci_bus *bus, unsigned int devfn, int offset)
{
struct pci_mmcfg_region *cfg;
cfg = pci_mmconfig_lookup(pci_domain_nr(bus), bus->number);
if (cfg && cfg->virt)
return cfg->virt +
(PCI_MMCFG_BUS_OFFSET(bus->number) | (devfn << 12)) +
offset;
return NULL;
}
