DWC PCIe EPC driver has alignment restriction for mapping as
pci->region_align. Use it to align memory.
Signed-off-by: Shunsuke Mie <mie@xxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-designware-ep.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index d06654895eba..7a7d7513b612 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -444,6 +444,18 @@ static void dw_pcie_ep_stop(struct pci_epc *epc)
dw_pcie_stop_link(pci);
}
+static u64 dw_pcie_ep_align_mem(struct pci_epc *epc, u64 addr, size_t *size)
+{
+ struct dw_pcie_ep *ep = epc_get_drvdata(epc);
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ u64 aaddr;
+
+ aaddr = ALIGN_DOWN(addr, pci->region_align);
+ *size += addr - aaddr;
+
+ return aaddr;
+}
+
static int dw_pcie_ep_start(struct pci_epc *epc)
{
struct dw_pcie_ep *ep = epc_get_drvdata(epc);
@@ -474,6 +486,7 @@ static const struct pci_epc_ops epc_ops = {
.set_msix = dw_pcie_ep_set_msix,
.get_msix = dw_pcie_ep_get_msix,
.raise_irq = dw_pcie_ep_raise_irq,
+ .align_mem = dw_pcie_ep_align_mem,
.start = dw_pcie_ep_start,
.stop = dw_pcie_ep_stop,
.get_features = dw_pcie_ep_get_features,
--
2.25.1
