diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci-ioda.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 5bd0eb6..bcb3bfc 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -3873,11 +3873,13 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, struct resource r; const __be64 *prop64; const __be32 *prop32; + struct property *prop; int len; unsigned int segno; u64 phb_id; void *aux; long rc; + u32 val; if (!of_device_is_available(np)) return; @@ -4016,6 +4018,20 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, } phb->ioda.pe_array = aux + pemap_off; + phb->ioda.max_tce_order = 0; + // Get TCE order from the DT. If it's not present, assume P8 + if (!of_get_property(np, "ibm,supported-tce-sizes", NULL)) { + phb->ioda.max_tce_order = 28; // assume P8 256mb TCEs + } else { + of_property_for_each_u32(np, "ibm,supported-tce-sizes", prop, + prop32, val) { + if (val > phb->ioda.max_tce_order) + phb->ioda.max_tce_order = val; + } + pr_debug("PHB%llx Found max TCE order of %d bits\n", + phb->opal_id, phb->ioda.max_tce_order); + } + /* * Choose PE number for root bus, which shouldn't have * M64 resources consumed by its child devices. To pick |
