oxnas: move PCIe controller outside of simple-bus

Move PCIe controller outside down to SoC level to avoid resource
mapping problems.
Also add more detailed error handling when mapping registers.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

target/linux/oxnas/files/drivers/pci/host/pcie-oxnas.c

@@ -420,34 +420,51 @@ oxnas_pcie_map_registers(struct platform_device *pdev,
 	u32 pcie_ctrl_offset;
 
 	ret = of_address_to_resource(np, 0, &regs);
-	if (ret)
+	if (ret) {
+		dev_err(&pdev->dev, "failed to parse base register space\n");
 		return -EINVAL;
+	}
+
 	pcie->base = devm_ioremap_resource(&pdev->dev, &regs);
-	if (!pcie->base)
+	if (!pcie->base) {
+		dev_err(&pdev->dev, "failed to map base register space\n");
 		return -ENOMEM;
+	}
 
 	ret = of_address_to_resource(np, 1, &regs);
-	if (ret)
+	if (ret) {
+		dev_err(&pdev->dev, "failed to parse inbound register space\n");
 		return -EINVAL;
+	}
+
 	pcie->inbound = devm_ioremap_resource(&pdev->dev, &regs);
-	if (!pcie->inbound)
+	if (!pcie->inbound) {
+		dev_err(&pdev->dev, "failed to map inbound register space\n");
 		return -ENOMEM;
+	}
 
 	pcie->phy = devm_of_phy_get(&pdev->dev, np, NULL);
 	if (IS_ERR(pcie->phy)) {
-		if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
+		if (PTR_ERR(pcie->phy) == -EPROBE_DEFER) {
+			dev_err(&pdev->dev, "failed to probe phy\n");
 			return PTR_ERR(pcie->phy);
+		}
+		dev_warn(&pdev->dev, "phy not attached\n");
 		pcie->phy = NULL;
 	}
 
 	if (of_property_read_u32(np, "plxtech,pcie-outbound-offset",
-				 &outbound_ctrl_offset))
+				 &outbound_ctrl_offset)) {
+		dev_err(&pdev->dev, "failed to parse outbound register offset\n");
 		return -EINVAL;
+	}
 	pcie->outbound_offset = outbound_ctrl_offset;
 
 	if (of_property_read_u32(np, "plxtech,pcie-ctrl-offset",
-				 &pcie_ctrl_offset))
+				 &pcie_ctrl_offset)) {
+		dev_err(&pdev->dev, "failed to parse pcie-ctrl register offset\n");
 		return -EINVAL;
+	}
 	pcie->pcie_ctrl_offset = pcie_ctrl_offset;
 
 	return 0;

target/linux/oxnas/patches-4.14/340-oxnas-pcie.patch

@@ -22,12 +22,21 @@
  
 --- a/arch/arm/boot/dts/ox820.dtsi
 +++ b/arch/arm/boot/dts/ox820.dtsi
-@@ -316,6 +316,89 @@
- 				reg = <0x1000 0x1000>,
+@@ -288,7 +288,7 @@
+ 			#address-cells = <1>;
+ 			#size-cells = <1>;
+ 			compatible = "simple-bus";
+-			ranges = <0 0x47000000 0x1000000>;
++			ranges = <0 0x47000000 0x2000>;
+ 
+ 			scu: scu@0 {
+ 				compatible = "arm,arm11mp-scu";
+@@ -317,5 +317,86 @@
  				      <0x100 0x500>;
  			};
+ 		};
 +
-+			pcie0: pcie-controller@c00000 {
++		pcie0: pcie-controller@47c00000 {
 +			compatible = "plxtech,nas782x-pcie";
 +			device_type = "pci";
 +			#address-cells = <3>;
@@ -42,7 +51,7 @@
 +			bus-range = <0x00 0x7f>;
 +
 +			/*	cfg			inbound translator	*/
-+				reg =	<0xc00000 0x1000>,	<0xd00000 0x100>;
++			reg =	<0x47c00000 0x1000>,	<0x47d00000 0x100>;
 +
 +			phys = <&pcie_phy>;
 +			phy-names = "pcie-phy";
@@ -55,7 +64,6 @@
 +			/* format: a list of: bus address, interrupt specifier,
 +			 * parent interrupt controller & specifier */
 +			interrupt-map = <0 0 0 0 &gic 0 19 0x304>;
-+
 +			gpios = <&gpio1 12 0>;
 +			clocks = <&stdclk CLK_820_PCIEA>, <&pllb>;
 +			clock-names = "pcie", "busclk";
@@ -68,7 +76,7 @@
 +			status = "disabled";
 +		};
 +
-+			pcie1: pcie-controller@e00000 {
++		pcie1: pcie-controller@47e00000 {
 +			compatible = "plxtech,nas782x-pcie";
 +			device_type = "pci";
 +			#address-cells = <3>;
@@ -83,7 +91,7 @@
 +			bus-range = <0x80 0xff>;
 +
 +			/*	cfg			inbound translator	*/
-+				reg =	<0xe00000 0x1000>,	<0xf00000 0x100>;
++			reg =	<0x47e00000 0x1000>,	<0x47f00000 0x100>;
 +
 +			phys = <&pcie_phy>;
 +			phy-names = "pcie-phy";
@@ -108,7 +116,5 @@
 +			plxtech,pcie-outbound-offset = <0x174>;
 +			status = "disabled";
 +		};
-+
- 		};
  	};
  };

target/linux/oxnas/patches-4.14/500-oxnas-sata.patch

@@ -26,9 +26,9 @@
  obj-$(CONFIG_PATA_ALI)		+= pata_ali.o
 --- a/arch/arm/boot/dts/ox820.dtsi
 +++ b/arch/arm/boot/dts/ox820.dtsi
-@@ -400,5 +400,20 @@
- 			};
- 
+@@ -398,5 +398,20 @@
+ 			plxtech,pcie-outbound-offset = <0x174>;
+ 			status = "disabled";
  		};
 +
 +		sata: sata@45900000 {