diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/sysdev/indirect_pci.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/ppc4xx_pci.c | 5 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/indirect_pci.c b/arch/powerpc/sysdev/indirect_pci.c index cfbd2aae93e..7fd49c97501 100644 --- a/arch/powerpc/sysdev/indirect_pci.c +++ b/arch/powerpc/sysdev/indirect_pci.c @@ -123,6 +123,12 @@ indirect_write_config(struct pci_bus *bus, unsigned int devfn, int offset, (bus->number == hose->first_busno)) val &= 0xffffff00; + /* Workaround for PCI_28 Errata in 440EPx/GRx */ + if ((hose->indirect_type & PPC_INDIRECT_TYPE_BROKEN_MRM) && + offset == PCI_CACHE_LINE_SIZE) { + val = 0; + } + /* * Note: the caller has already checked that offset is * suitably aligned and that len is 1, 2 or 4. diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c index 76886cf0e6d..fb368dfde5d 100644 --- a/arch/powerpc/sysdev/ppc4xx_pci.c +++ b/arch/powerpc/sysdev/ppc4xx_pci.c @@ -75,6 +75,11 @@ static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev) !of_device_is_compatible(hose->dn, "ibm,plb-pci")) return; + if (of_device_is_compatible(hose->dn, "ibm,plb440epx-pci") || + of_device_is_compatible(hose->dn, "ibm,plb440grx-pci")) { + hose->indirect_type |= PPC_INDIRECT_TYPE_BROKEN_MRM; + } + /* Hide the PCI host BARs from the kernel as their content doesn't * fit well in the resource management */ |