void pciauto_region_init(struct pci_region* res)
{
- res->bus_lower = res->bus_start;
+ /*
+ * Avoid allocating PCI resources from address 0 -- this is illegal
+ * according to PCI 2.1 and moreover, this is known to cause Linux IDE
+ * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+ */
+ res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
}
void pciauto_region_align(struct pci_region *res, unsigned long size)
/* Check the BAR type and set our address mask */
if (bar_response & PCI_BASE_ADDRESS_SPACE) {
- bar_size = ~(bar_response & PCI_BASE_ADDRESS_IO_MASK) + 1;
+ bar_size = ((~(bar_response & PCI_BASE_ADDRESS_IO_MASK))
+ & 0xffff) + 1;
bar_res = io;
DEBUGF("PCI Autoconfig: BAR %d, I/O, size=0x%x, ", bar_nr, bar_size);
} else {
/* We don't support prefetchable memory for now, so disable */
pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_BASE, 0x1000);
- pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x1000);
+ pci_hose_write_config_word(hose, dev, PCI_PREF_MEMORY_LIMIT, 0x0);
}
if (pci_io) {