PCI: iproc: Add outbound mapping support
Certain SoCs require the PCIe outbound mapping to be configured in
software. Add support for those chips.
[jonmason: Use %pap format when printing size_t to avoid warnings in 32-bit
build.]
[arnd: Use div64_u64() instead of "%" to avoid __aeabi_uldivmod link error
in 32-bit build.]
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Jon Mason <jonmason@broadcom.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c
index 9aedc8e..c9550dc 100644
--- a/drivers/pci/host/pcie-iproc-platform.c
+++ b/drivers/pci/host/pcie-iproc-platform.c
@@ -54,6 +54,33 @@
return -ENOMEM;
}
+ if (of_property_read_bool(np, "brcm,pcie-ob")) {
+ u32 val;
+
+ ret = of_property_read_u32(np, "brcm,pcie-ob-axi-offset",
+ &val);
+ if (ret) {
+ dev_err(pcie->dev,
+ "missing brcm,pcie-ob-axi-offset property\n");
+ return ret;
+ }
+ pcie->ob.axi_offset = val;
+
+ ret = of_property_read_u32(np, "brcm,pcie-ob-window-size",
+ &val);
+ if (ret) {
+ dev_err(pcie->dev,
+ "missing brcm,pcie-ob-window-size property\n");
+ return ret;
+ }
+ pcie->ob.window_size = (resource_size_t)val * SZ_1M;
+
+ if (of_property_read_bool(np, "brcm,pcie-ob-oarr-size"))
+ pcie->ob.set_oarr_size = true;
+
+ pcie->need_ob_cfg = true;
+ }
+
/* PHY use is optional */
pcie->phy = devm_phy_get(&pdev->dev, "pcie-phy");
if (IS_ERR(pcie->phy)) {