Merge branch 'pci/host-xgene' into next

* pci/host-xgene:
  arm64: dts: Add APM X-Gene PCIe device tree nodes
  PCI: xgene: Add APM X-Gene PCIe driver

Conflicts:
	drivers/pci/host/Kconfig
	drivers/pci/host/Makefile

Documentation/devicetree/bindings/pci/xgene-pci.txt

@@ -0,0 +1,57 @@
+* AppliedMicro X-Gene PCIe interface
+
+Required properties:
+- device_type: set to "pci"
+- compatible: should contain "apm,xgene-pcie" to identify the core.
+- reg: A list of physical base address and length for each set of controller
+       registers. Must contain an entry for each entry in the reg-names
+       property.
+- reg-names: Must include the following entries:
+  "csr": controller configuration registers.
+  "cfg": pcie configuration space registers.
+- #address-cells: set to <3>
+- #size-cells: set to <2>
+- ranges: ranges for the outbound memory, I/O regions.
+- dma-ranges: ranges for the inbound memory regions.
+- #interrupt-cells: set to <1>
+- interrupt-map-mask and interrupt-map: standard PCI properties
+	to define the mapping of the PCIe interface to interrupt
+	numbers.
+- clocks: from common clock binding: handle to pci clock.
+
+Optional properties:
+- status: Either "ok" or "disabled".
+- dma-coherent: Present if dma operations are coherent
+
+Example:
+
+SoC specific DT Entry:
+
+	pcie0: pcie@1f2b0000 {
+		status = "disabled";
+		device_type = "pci";
+		compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+		#interrupt-cells = <1>;
+		#size-cells = <2>;
+		#address-cells = <3>;
+		reg = < 0x00 0x1f2b0000 0x0 0x00010000   /* Controller registers */
+			0xe0 0xd0000000 0x0 0x00040000>; /* PCI config space */
+		reg-names = "csr", "cfg";
+		ranges = <0x01000000 0x00 0x00000000 0xe0 0x10000000 0x00 0x00010000   /* io */
+			  0x02000000 0x00 0x80000000 0xe1 0x80000000 0x00 0x80000000>; /* mem */
+		dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+			      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+		interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+		interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1
+				 0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1
+				 0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1
+				 0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>;
+		dma-coherent;
+		clocks = <&pcie0clk 0>;
+	};
+
+
+Board specific DT Entry:
+	&pcie0 {
+		status = "ok";
+	};

MAINTAINERS

@@ -6868,6 +6868,14 @@ F:	include/linux/pci*
 F:	arch/x86/pci/
 F:	arch/x86/kernel/quirks.c
 
+PCI DRIVER FOR APPLIEDMICRO XGENE
+M:	Tanmay Inamdar <tinamdar@apm.com>
+L:	linux-pci@vger.kernel.org
+L:	linux-arm-kernel@lists.infradead.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/pci/xgene-pci.txt
+F:	drivers/pci/host/pci-xgene.c
+
 PCI DRIVER FOR IMX6
 M:	Richard Zhu <r65037@freescale.com>
 M:	Lucas Stach <l.stach@pengutronix.de>

arch/arm64/boot/dts/apm-mustang.dts

@@ -25,6 +25,14 @@
 	};
 };
 
+&pcie0clk {
+	status = "ok";
+};
+
+&pcie0 {
+	status = "ok";
+};
+
 &serial0 {
 	status = "ok";
 };

arch/arm64/boot/dts/apm-storm.dtsi

@@ -269,6 +269,171 @@
 				enable-mask = <0x2>;
 				clock-output-names = "rtcclk";
 			};
+
+			pcie0clk: pcie0clk@1f2bc000 {
+				status = "disabled";
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f2bc000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				clock-output-names = "pcie0clk";
+			};
+
+			pcie1clk: pcie1clk@1f2cc000 {
+				status = "disabled";
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f2cc000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				clock-output-names = "pcie1clk";
+			};
+
+			pcie2clk: pcie2clk@1f2dc000 {
+				status = "disabled";
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f2dc000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				clock-output-names = "pcie2clk";
+			};
+
+			pcie3clk: pcie3clk@1f50c000 {
+				status = "disabled";
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f50c000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				clock-output-names = "pcie3clk";
+			};
+
+			pcie4clk: pcie4clk@1f51c000 {
+				status = "disabled";
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f51c000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				clock-output-names = "pcie4clk";
+			};
+		};
+
+		pcie0: pcie@1f2b0000 {
+			status = "disabled";
+			device_type = "pci";
+			compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			reg = < 0x00 0x1f2b0000 0x0 0x00010000   /* Controller registers */
+				0xe0 0xd0000000 0x0 0x00040000>; /* PCI config space */
+			reg-names = "csr", "cfg";
+			ranges = <0x01000000 0x00 0x00000000 0xe0 0x10000000 0x00 0x00010000   /* io */
+				  0x02000000 0x00 0x80000000 0xe1 0x80000000 0x00 0x80000000>; /* mem */
+			dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+				      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+			interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+			interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1
+					 0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1
+					 0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1
+					 0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>;
+			dma-coherent;
+			clocks = <&pcie0clk 0>;
+		};
+
+		pcie1: pcie@1f2c0000 {
+			status = "disabled";
+			device_type = "pci";
+			compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			reg = < 0x00 0x1f2c0000 0x0 0x00010000   /* Controller registers */
+				0xd0 0xd0000000 0x0 0x00040000>; /* PCI config space */
+			reg-names = "csr", "cfg";
+			ranges = <0x01000000 0x0 0x00000000 0xd0 0x10000000 0x00 0x00010000   /* io  */
+				  0x02000000 0x0 0x80000000 0xd1 0x80000000 0x00 0x80000000>; /* mem */
+			dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+				      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+			interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+			interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc8 0x1
+					 0x0 0x0 0x0 0x2 &gic 0x0 0xc9 0x1
+					 0x0 0x0 0x0 0x3 &gic 0x0 0xca 0x1
+					 0x0 0x0 0x0 0x4 &gic 0x0 0xcb 0x1>;
+			dma-coherent;
+			clocks = <&pcie1clk 0>;
+		};
+
+		pcie2: pcie@1f2d0000 {
+			status = "disabled";
+			device_type = "pci";
+			compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			reg =  < 0x00 0x1f2d0000 0x0 0x00010000   /* Controller registers */
+				 0x90 0xd0000000 0x0 0x00040000>; /* PCI config space */
+			reg-names = "csr", "cfg";
+			ranges = <0x01000000 0x0 0x00000000 0x90 0x10000000 0x0 0x00010000   /* io  */
+				  0x02000000 0x0 0x80000000 0x91 0x80000000 0x0 0x80000000>; /* mem */
+			dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+				      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+			interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+			interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xce 0x1
+					 0x0 0x0 0x0 0x2 &gic 0x0 0xcf 0x1
+					 0x0 0x0 0x0 0x3 &gic 0x0 0xd0 0x1
+					 0x0 0x0 0x0 0x4 &gic 0x0 0xd1 0x1>;
+			dma-coherent;
+			clocks = <&pcie2clk 0>;
+		};
+
+		pcie3: pcie@1f500000 {
+			status = "disabled";
+			device_type = "pci";
+			compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			reg = < 0x00 0x1f500000 0x0 0x00010000   /* Controller registers */
+				0xa0 0xd0000000 0x0 0x00040000>; /* PCI config space */
+			reg-names = "csr", "cfg";
+			ranges = <0x01000000 0x0 0x00000000 0xa0 0x10000000 0x0 0x00010000   /* io   */
+				  0x02000000 0x0 0x80000000 0xa1 0x80000000 0x0 0x80000000>; /* mem  */
+			dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+				      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+			interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+			interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xd4 0x1
+					 0x0 0x0 0x0 0x2 &gic 0x0 0xd5 0x1
+					 0x0 0x0 0x0 0x3 &gic 0x0 0xd6 0x1
+					 0x0 0x0 0x0 0x4 &gic 0x0 0xd7 0x1>;
+			dma-coherent;
+			clocks = <&pcie3clk 0>;
+		};
+
+		pcie4: pcie@1f510000 {
+			status = "disabled";
+			device_type = "pci";
+			compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			#address-cells = <3>;
+			reg = < 0x00 0x1f510000 0x0 0x00010000   /* Controller registers */
+				0xc0 0xd0000000 0x0 0x00200000>; /* PCI config space */
+			reg-names = "csr", "cfg";
+			ranges = <0x01000000 0x0 0x00000000 0xc0 0x10000000 0x0 0x00010000   /* io  */
+				  0x02000000 0x0 0x80000000 0xc1 0x80000000 0x0 0x80000000>; /* mem */
+			dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
+				      0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
+			interrupt-map-mask = <0x0 0x0 0x0 0x7>;
+			interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xda 0x1
+					 0x0 0x0 0x0 0x2 &gic 0x0 0xdb 0x1
+					 0x0 0x0 0x0 0x3 &gic 0x0 0xdc 0x1
+					 0x0 0x0 0x0 0x4 &gic 0x0 0xdd 0x1>;
+			dma-coherent;
+			clocks = <&pcie4clk 0>;
 		};
 
 		serial0: serial@1c020000 {

drivers/pci/host/Kconfig

@@ -63,7 +63,6 @@ config PCIE_SPEAR13XX
 	help
 	  Say Y here if you want PCIe support on SPEAr13XX SoCs.
 
-
 config PCI_KEYSTONE
 	bool "TI Keystone PCIe controller"
 	depends on ARCH_KEYSTONE
@@ -82,4 +81,14 @@ config PCIE_XILINX
 	  Say 'Y' here if you want kernel to support the Xilinx AXI PCIe
 	  Host Bridge driver.
 
+config PCI_XGENE
+	bool "X-Gene PCIe controller"
+	depends on ARCH_XGENE
+	depends on OF
+	select PCIEPORTBUS
+	help
+	  Say Y here if you want internal PCI support on APM X-Gene SoC.
+	  There are 5 internal PCIe ports available. Each port is GEN3 capable
+	  and have varied lanes from x1 to x8.
+
 endmenu

drivers/pci/host/Makefile

@@ -10,3 +10,4 @@ obj-$(CONFIG_PCI_HOST_GENERIC) += pci-host-generic.o
 obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spear13xx.o
 obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
 obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
+obj-$(CONFIG_PCI_XGENE) += pci-xgene.o