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authorNiklas Cassel <niklas.cassel@axis.com>2018-03-28 13:50:12 +0200
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2018-04-03 12:38:04 +0100
commita2ea8ac4ec72da44e2cf508e6431db0487b26893 (patch)
tree1e594348bb59e89e7a4ffc4b0b786861e246c46f /drivers/pci
parentd28810ba7891a1df2cb00116c6c66167970a193d (diff)
downloadlinux-a2ea8ac4ec72da44e2cf508e6431db0487b26893.tar.bz2
PCI: cadence: Set PCI_BASE_ADDRESS_MEM_TYPE_64 if a 64-bit BAR was set-up
cdns_pcie_ep_set_bar() does some round-up of the BAR size, which means that a 64-bit BAR can be set-up, even when the flag PCI_BASE_ADDRESS_MEM_TYPE_64 isn't set. If a 64-bit BAR was set-up, set the flag PCI_BASE_ADDRESS_MEM_TYPE_64, so that the calling function can know what BAR width that was actually set-up. I'm not sure why cdns_pcie_ep_set_bar() doesn't obey the flag PCI_BASE_ADDRESS_MEM_TYPE_64, but I leave this for the MAINTAINER to fix, since there might be a reason why this flag is ignored. Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Alan Douglas <adouglas@cadence.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/cadence/pcie-cadence-ep.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c
index cef36cd6b710..2905e098678c 100644
--- a/drivers/pci/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/cadence/pcie-cadence-ep.c
@@ -106,6 +106,9 @@ static int cdns_pcie_ep_set_bar(struct pci_epc *epc, u8 fn,
if (is_64bits && (bar & 1))
return -EINVAL;
+ if (is_64bits && !(flags & PCI_BASE_ADDRESS_MEM_TYPE_64))
+ epf_bar->flags |= PCI_BASE_ADDRESS_MEM_TYPE_64;
+
if (is_64bits && is_prefetch)
ctrl = CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS;
else if (is_prefetch)