On 05/03/2016 11:22 PM, Gavin Shan wrote:
pnv_pci_ioda_setup_opal_tce_kill() called by pnv_ioda_setup_dma()
to remap the TCE kill regiter. What's done in pnv_ioda_setup_dma()
will be covered in pcibios_setup_bridge() which is invoked on each
PCI bridge. It means we will possibly remap the TCE kill register
for multiple times and it's unnecessary.
This moves pnv_pci_ioda_setup_opal_tce_kill() to where the PHB is
initialized (pnv_pci_init_ioda_phb()) to avoid above issue.
Signed-off-by: Gavin Shan <gws...@linux.vnet.ibm.com>
Reviewed-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
arch/powerpc/platforms/powernv/pci-ioda.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 5ee8a57..cbd4c0b 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2599,8 +2599,6 @@ static void pnv_ioda_setup_dma(struct pnv_phb *phb)
pr_info("PCI: Domain %04x has %d available 32-bit DMA segments\n",
hose->global_number, phb->ioda.dma32_count);
- pnv_pci_ioda_setup_opal_tce_kill(phb);
-
/* Walk our PE list and configure their DMA segments */
list_for_each_entry(pe, &phb->ioda.pe_list, list) {
weight = pnv_pci_ioda_pe_dma_weight(pe);
@@ -3396,6 +3394,9 @@ static void __init pnv_pci_init_ioda_phb(struct
device_node *np,
if (phb->regs == NULL)
pr_err(" Failed to map registers !\n");
+ /* Initialize TCE kill register */
+ pnv_pci_ioda_setup_opal_tce_kill(phb);
+
/* Initialize more IODA stuff */
phb->ioda.total_pe_num = 1;
prop32 = of_get_property(np, "ibm,opal-num-pes", NULL);
--
Alexey
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