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authorMichael Ellerman <mpe@ellerman.id.au>2016-02-25 21:52:58 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2016-02-25 21:52:58 +1100
commit2527083cb831024d22a03f68f54f6a46ecf5bf6c (patch)
tree41de92d988a4deccb2d5087a964a51682f155e99 /arch/powerpc/platforms
parenta4c3f909b4d9bb9430bf42ad583661df6dfa86c6 (diff)
parent9ab3ac233a8b4ffcc27c8475b83dee49fc46bc76 (diff)
downloadlinux-2527083cb831024d22a03f68f54f6a46ecf5bf6c.tar.gz
Merge tag 'powerpc-4.5-4' into next
Pull in our current fixes from 4.5, in particular the "Fix Multi hit ERAT" bug is causing folks some grief when testing next.
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/powernv/eeh-powernv.c5
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c1
-rw-r--r--arch/powerpc/platforms/powernv/pci.c26
-rw-r--r--arch/powerpc/platforms/powernv/pci.h1
4 files changed, 32 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/eeh-powernv.c b/arch/powerpc/platforms/powernv/eeh-powernv.c
index 3f1cb35d9cdf..811917219bf1 100644
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -428,9 +428,12 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
* PCI devices of the PE are expected to be removed prior
* to PE reset.
*/
- if (!edev->pe->bus)
+ if (!(edev->pe->state & EEH_PE_PRI_BUS)) {
edev->pe->bus = pci_find_bus(hose->global_number,
pdn->busno);
+ if (edev->pe->bus)
+ edev->pe->state |= EEH_PE_PRI_BUS;
+ }
/*
* Enable EEH explicitly so that we will do EEH check
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index dc868586315d..c5baaf3cc4e5 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3211,6 +3211,7 @@ static void pnv_pci_ioda_shutdown(struct pci_controller *hose)
static const struct pci_controller_ops pnv_pci_ioda_controller_ops = {
.dma_dev_setup = pnv_pci_dma_dev_setup,
+ .dma_bus_setup = pnv_pci_dma_bus_setup,
#ifdef CONFIG_PCI_MSI
.setup_msi_irqs = pnv_setup_msi_irqs,
.teardown_msi_irqs = pnv_teardown_msi_irqs,
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 8de0140332b2..73c8dc2a353f 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -596,6 +596,9 @@ 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);
@@ -617,6 +620,9 @@ 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);
@@ -757,6 +763,26 @@ 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;
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 32cae3d8e011..3f814f382b2e 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -232,6 +232,7 @@ extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option);
extern void pnv_pci_dma_dev_setup(struct pci_dev *pdev);
+extern void pnv_pci_dma_bus_setup(struct pci_bus *bus);
extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
extern void pnv_teardown_msi_irqs(struct pci_dev *pdev);