powerpc/ioda: Set "read" permission when "write" is set

[karo-tx-linux.git] / arch / powerpc / platforms / powernv / pci.c

diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index f2dd7723424034a0626c28ca2cc9762f79123984..b1ef84a6c9d13cff03c2d4a5234e57265ef5bc75 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -1,8 +1,6 @@
 /*
  * Support PCI/PCIe on PowerNV platforms
  *
- * Currently supports only P5IOC2
- *
  * Copyright 2011 Benjamin Herrenschmidt, IBM Corp.
  *
  * This program is free software; you can redistribute it and/or
@@ -601,6 +599,9 @@ int pnv_tce_build(struct iommu_table *tbl, long index, long npages,
        u64 rpn = __pa(uaddr) >> tbl->it_page_shift;
        long i;
 
+       if (proto_tce & TCE_PCI_WRITE)
+               proto_tce |= TCE_PCI_READ;
+
        for (i = 0; i < npages; i++) {
                unsigned long newtce = proto_tce |
                        ((rpn + i) << tbl->it_page_shift);
@@ -622,6 +623,9 @@ int pnv_tce_xchg(struct iommu_table *tbl, long index,
 
        BUG_ON(*hpa & ~IOMMU_PAGE_MASK(tbl));
 
+       if (newtce & TCE_PCI_WRITE)
+               newtce |= TCE_PCI_READ;
+
        oldtce = xchg(pnv_tce(tbl, idx), cpu_to_be64(newtce));
        *hpa = be64_to_cpu(oldtce) & ~(TCE_PCI_READ | TCE_PCI_WRITE);
        *direction = iommu_tce_direction(oldtce);
@@ -762,6 +766,26 @@ void pnv_pci_dma_dev_setup(struct pci_dev *pdev)
                phb->dma_dev_setup(phb, pdev);
 }
 
+void pnv_pci_dma_bus_setup(struct pci_bus *bus)
+{
+       struct pci_controller *hose = bus->sysdata;
+       struct pnv_phb *phb = hose->private_data;
+       struct pnv_ioda_pe *pe;
+
+       list_for_each_entry(pe, &phb->ioda.pe_list, list) {
+               if (!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL)))
+                       continue;
+
+               if (!pe->pbus)
+                       continue;
+
+               if (bus->number == ((pe->rid >> 8) & 0xFF)) {
+                       pe->pbus = bus;
+                       break;
+               }
+       }
+}
+
 void pnv_pci_shutdown(void)
 {
        struct pci_controller *hose;
@@ -807,6 +831,10 @@ void __init pnv_pci_init(void)
        for_each_compatible_node(np, NULL, "ibm,ioda2-phb")
                pnv_pci_init_ioda2_phb(np);
 
+       /* Look for NPU PHBs */
+       for_each_compatible_node(np, NULL, "ibm,ioda2-npu-phb")
+               pnv_pci_init_npu_phb(np);
+
        /* Setup the linkage between OF nodes and PHBs */
        pci_devs_phb_init();