static char __iomem *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn)
{
char __iomem *addr;
- if (seg == 0 && bus < PCI_MMCFG_MAX_CHECK_BUS &&
- test_bit(32*bus + PCI_SLOT(devfn), pci_mmcfg_fallback_slots))
- return NULL;
+
addr = get_virt(seg, bus);
if (!addr)
return NULL;
/* Why do we have this when nobody checks it. How about a BUG()!? -AK */
if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095))) {
- *value = -1;
+err: *value = -1;
return -EINVAL;
}
+ if (reg < 256)
+ return pci_conf1_read(seg,bus,devfn,reg,len,value);
+
addr = pci_dev_base(seg, bus, devfn);
if (!addr)
- return pci_conf1_read(seg,bus,devfn,reg,len,value);
+ goto err;
switch (len) {
case 1:
if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095)))
return -EINVAL;
+ if (reg < 256)
+ return pci_conf1_write(seg,bus,devfn,reg,len,value);
+
addr = pci_dev_base(seg, bus, devfn);
if (!addr)
- return pci_conf1_write(seg,bus,devfn,reg,len,value);
+ return -EINVAL;
switch (len) {
case 1:
return addr;
}
-int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
- unsigned int devfn)
-{
- return pci_dev_base(seg, bus, devfn) != NULL;
-}
-
int __init pci_mmcfg_arch_init(void)
{
int i;