Commit 1fd0f525 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Paul Mackerras

powerpc: Fix domain numbers in /proc on 64-bit

The code to properly expose domain numbers in /proc is somewhat
bogus on ppc64 as it depends on the "buid" field being non-0,
but that field is really pseries specific.

This removes that code and makes ppc64 use the same code as 32-bit
which effectively decides whether to expose domains based on
ppc_pci_flags set by the platform, and sets the default for 64-bit
to enable domains and enable compatibility for domain 0 (which
strips the domain number for domain 0 to help with X servers).
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 454666eb
......@@ -53,8 +53,9 @@ static int global_phb_number; /* Global phb counter */
/* ISA Memory physical address */
resource_size_t isa_mem_base;
/* Default PCI flags is 0 */
unsigned int ppc_pci_flags;
/* Default PCI flags is 0 on ppc32, modified at boot on ppc64 */
unsigned int ppc_pci_flags = 0;
static struct dma_mapping_ops *pci_dma_ops;
......@@ -853,15 +854,12 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = pci_bus_to_host(bus);
#ifdef CONFIG_PPC64
return hose->buid != 0;
#else
if (!(ppc_pci_flags & PPC_PCI_ENABLE_PROC_DOMAINS))
return 0;
if (ppc_pci_flags & PPC_PCI_COMPAT_DOMAIN_0)
return hose->global_number != 0;
return 1;
#endif
}
void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
......
......@@ -388,6 +388,11 @@ static int __init pcibios_init(void)
if (pci_probe_only)
ppc_pci_flags |= PPC_PCI_PROBE_ONLY;
/* On ppc64, we always enable PCI domains and we keep domain 0
* backward compatible in /proc for video cards
*/
ppc_pci_flags |= PPC_PCI_ENABLE_PROC_DOMAINS | PPC_PCI_COMPAT_DOMAIN_0;
/* Scan all of the recorded PCI controllers. */
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
scan_phb(hose);
......
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