Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/k…

…ernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...

Documentation/admin-guide/kernel-parameters.txt

@@ -3711,7 +3711,11 @@
 			[KNL, SMP] Set scheduler's default relax_domain_level.
 			See Documentation/cgroup-v1/cpusets.txt.
 
-	reserve=	[KNL,BUGS] Force the kernel to ignore some iomem area
+	reserve=	[KNL,BUGS] Force kernel to ignore I/O ports or memory
+			Format: <base1>,<size1>[,<base2>,<size2>,...]
+			Reserve I/O ports or memory so the kernel won't use
+			them.  If <base> is less than 0x10000, the region
+			is assumed to be I/O ports; otherwise it is memory.
 
 	reservetop=	[X86-32]
 			Format: nn[KMG]

Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt

@@ -4,7 +4,10 @@ This PCIe host controller is based on the Synopsys DesignWare PCIe IP
 and thus inherits all the common properties defined in designware-pcie.txt.
 
 Required properties:
-- compatible: "axis,artpec6-pcie", "snps,dw-pcie"
+- compatible: "axis,artpec6-pcie", "snps,dw-pcie" for ARTPEC-6 in RC mode;
+	      "axis,artpec6-pcie-ep", "snps,dw-pcie" for ARTPEC-6 in EP mode;
+	      "axis,artpec7-pcie", "snps,dw-pcie" for ARTPEC-7 in RC mode;
+	      "axis,artpec7-pcie-ep", "snps,dw-pcie" for ARTPEC-7 in EP mode;
 - reg: base addresses and lengths of the PCIe controller (DBI),
 	the PHY controller, and configuration address space.
 - reg-names: Must include the following entries:

Documentation/devicetree/bindings/pci/cdns,cdns-pcie-ep.txt

@@ -0,0 +1,22 @@
+* Cadence PCIe endpoint controller
+
+Required properties:
+- compatible: Should contain "cdns,cdns-pcie-ep" to identify the IP used.
+- reg: Should contain the controller register base address and AXI interface
+  region base address respectively.
+- reg-names: Must be "reg" and "mem" respectively.
+- cdns,max-outbound-regions: Set to maximum number of outbound regions
+
+Optional properties:
+- max-functions: Maximum number of functions that can be configured (default 1).
+
+Example:
+
+pcie@fc000000 {
+	compatible = "cdns,cdns-pcie-ep";
+	reg = <0x0 0xfc000000 0x0 0x01000000>,
+	      <0x0 0x80000000 0x0 0x40000000>;
+	reg-names = "reg", "mem";
+	cdns,max-outbound-regions = <16>;
+	max-functions = /bits/ 8 <8>;
+};

Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt

@@ -0,0 +1,60 @@
+* Cadence PCIe host controller
+
+This PCIe controller inherits the base properties defined in
+host-generic-pci.txt.
+
+Required properties:
+- compatible: Should contain "cdns,cdns-pcie-host" to identify the IP used.
+- reg: Should contain the controller register base address, PCIe configuration
+  window base address, and AXI interface region base address respectively.
+- reg-names: Must be "reg", "cfg" and "mem" respectively.
+- #address-cells: Set to <3>
+- #size-cells: Set to <2>
+- device_type: Set to "pci"
+- ranges: Ranges for the PCI memory and I/O 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.
+
+Optional properties:
+- cdns,max-outbound-regions: Set to maximum number of outbound regions
+  (default 32)
+- cdns,no-bar-match-nbits: Set into the no BAR match register to configure the
+  number of least significant bits kept during inbound (PCIe -> AXI) address
+  translations (default 32)
+- vendor-id: The PCI vendor ID (16 bits, default is design dependent)
+- device-id: The PCI device ID (16 bits, default is design dependent)
+
+Example:
+
+pcie@fb000000 {
+	compatible = "cdns,cdns-pcie-host";
+	device_type = "pci";
+	#address-cells = <3>;
+	#size-cells = <2>;
+	bus-range = <0x0 0xff>;
+	linux,pci-domain = <0>;
+	cdns,max-outbound-regions = <16>;
+	cdns,no-bar-match-nbits = <32>;
+	vendor-id = /bits/ 16 <0x17cd>;
+	device-id = /bits/ 16 <0x0200>;
+
+	reg = <0x0 0xfb000000  0x0 0x01000000>,
+	      <0x0 0x41000000  0x0 0x00001000>,
+	      <0x0 0x40000000  0x0 0x04000000>;
+	reg-names = "reg", "cfg", "mem";
+
+	ranges = <0x02000000 0x0 0x42000000  0x0 0x42000000  0x0 0x1000000>,
+		 <0x01000000 0x0 0x43000000  0x0 0x43000000  0x0 0x0010000>;
+
+	#interrupt-cells = <0x1>;
+
+	interrupt-map = <0x0 0x0 0x0  0x1  &gic  0x0 0x0 0x0 14 0x1
+			 0x0 0x0 0x0  0x2  &gic  0x0 0x0 0x0 15 0x1
+			 0x0 0x0 0x0  0x3  &gic  0x0 0x0 0x0 16 0x1
+			 0x0 0x0 0x0  0x4  &gic  0x0 0x0 0x0 17 0x1>;
+
+	interrupt-map-mask = <0x0 0x0 0x0  0x7>;
+
+	msi-parent = <&its_pci>;
+};

Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt

@@ -6,9 +6,6 @@ and thus inherits all the common properties defined in designware-pcie.txt.
 Required properties:
 - compatible: "samsung,exynos5440-pcie"
 - reg: base addresses and lengths of the PCIe controller,
-	the PHY controller, additional register for the PHY controller.
-	(Registers for the PHY controller are DEPRECATED.
-	 Use the PHY framework.)
 - reg-names : First name should be set to "elbi".
 	And use the "config" instead of getting the configuration address space
 	from "ranges".
@@ -23,49 +20,8 @@ For other common properties, refer to
 
 Example:
 
-SoC-specific DT Entry:
+SoC-specific DT Entry (with using PHY framework):
 
-	pcie@290000 {
-		compatible = "samsung,exynos5440-pcie", "snps,dw-pcie";
-		reg = <0x290000 0x1000
-			0x270000 0x1000
-			0x271000 0x40>;
-		interrupts = <0 20 0>, <0 21 0>, <0 22 0>;
-		clocks = <&clock 28>, <&clock 27>;
-		clock-names = "pcie", "pcie_bus";
-		#address-cells = <3>;
-		#size-cells = <2>;
-		device_type = "pci";
-		ranges = <0x00000800 0 0x40000000 0x40000000 0 0x00001000   /* configuration space */
-			  0x81000000 0 0	  0x40001000 0 0x00010000   /* downstream I/O */
-			  0x82000000 0 0x40011000 0x40011000 0 0x1ffef000>; /* non-prefetchable memory */
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 0 0>;
-		interrupt-map = <0 0 0 0 &gic GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
-		num-lanes = <4>;
-	};
-
-	pcie@2a0000 {
-		compatible = "samsung,exynos5440-pcie", "snps,dw-pcie";
-		reg = <0x2a0000 0x1000
-			0x272000 0x1000
-			0x271040 0x40>;
-		interrupts = <0 23 0>, <0 24 0>, <0 25 0>;
-		clocks = <&clock 29>, <&clock 27>;
-		clock-names = "pcie", "pcie_bus";
-		#address-cells = <3>;
-		#size-cells = <2>;
-		device_type = "pci";
-		ranges = <0x00000800 0 0x60000000 0x60000000 0 0x00001000   /* configuration space */
-			  0x81000000 0 0	  0x60001000 0 0x00010000   /* downstream I/O */
-			  0x82000000 0 0x60011000 0x60011000 0 0x1ffef000>; /* non-prefetchable memory */
-		#interrupt-cells = <1>;
-		interrupt-map-mask = <0 0 0 0>;
-		interrupt-map = <0 0 0 0 &gic GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
-		num-lanes = <4>;
-	};
-
-With using PHY framework:
 	pcie_phy0: pcie-phy@270000 {
 		...
 		reg = <0x270000 0x1000>, <0x271000 0x40>;
@@ -74,13 +30,21 @@ With using PHY framework:
 	};
 
 	pcie@290000 {
-		...
+		compatible = "samsung,exynos5440-pcie", "snps,dw-pcie";
 		reg = <0x290000 0x1000>, <0x40000000 0x1000>;
 		reg-names = "elbi", "config";
+		clocks = <&clock 28>, <&clock 27>;
+		clock-names = "pcie", "pcie_bus";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		device_type = "pci";
 		phys = <&pcie_phy0>;
 		ranges = <0x81000000 0 0	  0x60001000 0 0x00010000
 			  0x82000000 0 0x60011000 0x60011000 0 0x1ffef000>;
-		...
+		#interrupt-cells = <1>;
+		interrupt-map-mask = <0 0 0 0>;
+		interrupt-map = <0 0 0 0 &gic GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+		num-lanes = <4>;
 	};
 
 Board-specific DT Entry:

MAINTAINERS

@@ -10513,6 +10513,13 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
 F:	drivers/pci/dwc/pcie-armada8k.c
 
+PCI DRIVER FOR CADENCE PCIE IP
+M:	Alan Douglas <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	Documentation/devicetree/bindings/pci/cdns,*.txt
+F:	drivers/pci/cadence/pcie-cadence*
+
 PCI DRIVER FOR FREESCALE LAYERSCAPE
 M:	Minghuan Lian <[email protected]>
 M:	Mingkai Hu <[email protected]>
@@ -10663,8 +10670,12 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/
 F:	Documentation/PCI/
+F:	drivers/acpi/pci*
 F:	drivers/pci/
+F:	include/asm-generic/pci*
 F:	include/linux/pci*
+F:	include/uapi/linux/pci*
+F:	lib/pci*
 F:	arch/x86/pci/
 F:	arch/x86/kernel/quirks.c
 

arch/alpha/kernel/console.c

@@ -21,6 +21,7 @@
 struct pci_controller *pci_vga_hose;
 static struct resource alpha_vga = {
 	.name	= "alpha-vga+",
+	.flags	= IORESOURCE_IO,
 	.start	= 0x3C0,
 	.end	= 0x3DF
 };

arch/arm/include/asm/pci.h

@@ -10,10 +10,7 @@ extern unsigned long pcibios_min_io;
 extern unsigned long pcibios_min_mem;
 #define PCIBIOS_MIN_MEM pcibios_min_mem
 
-static inline int pcibios_assign_all_busses(void)
-{
-	return pci_has_flag(PCI_REASSIGN_ALL_RSRC);
-}
+#define pcibios_assign_all_busses()	pci_has_flag(PCI_REASSIGN_ALL_BUS)
 
 #ifdef CONFIG_PCI_DOMAINS
 static inline int pci_proc_domain(struct pci_bus *bus)

arch/arm/kernel/bios32.c

@@ -527,7 +527,7 @@ void pci_common_init_dev(struct device *parent, struct hw_pci *hw)
 	struct pci_sys_data *sys;
 	LIST_HEAD(head);
 
-	pci_add_flags(PCI_REASSIGN_ALL_RSRC);
+	pci_add_flags(PCI_REASSIGN_ALL_BUS);
 	if (hw->preinit)
 		hw->preinit();
 	pcibios_init_hw(parent, hw, &head);

arch/arm/mach-mvebu/Kconfig

@@ -10,7 +10,6 @@ menuconfig ARCH_MVEBU
 	select ZONE_DMA if ARM_LPAE
 	select GPIOLIB
 	select PCI_QUIRKS if PCI
-	select OF_ADDRESS_PCI
 
 if ARCH_MVEBU
 

arch/mips/jazz/setup.c

@@ -32,22 +32,22 @@ static struct resource jazz_io_resources[] = {
 		.start	= 0x00,
 		.end	= 0x1f,
 		.name	= "dma1",
-		.flags	= IORESOURCE_BUSY
+		.flags	= IORESOURCE_IO | IORESOURCE_BUSY
 	}, {
 		.start	= 0x40,
 		.end	= 0x5f,
 		.name	= "timer",
-		.flags	= IORESOURCE_BUSY
+		.flags	= IORESOURCE_IO | IORESOURCE_BUSY
 	}, {
 		.start	= 0x80,
 		.end	= 0x8f,
 		.name	= "dma page reg",
-		.flags	= IORESOURCE_BUSY
+		.flags	= IORESOURCE_IO | IORESOURCE_BUSY
 	}, {
 		.start	= 0xc0,
 		.end	= 0xdf,
 		.name	= "dma2",
-		.flags	= IORESOURCE_BUSY
+		.flags	= IORESOURCE_IO | IORESOURCE_BUSY
 	}
 };
 

arch/mips/mti-malta/malta-setup.c

@@ -47,31 +47,31 @@ static struct resource standard_io_resources[] = {
 		.name = "dma1",
 		.start = 0x00,
 		.end = 0x1f,
-		.flags = IORESOURCE_BUSY
+		.flags = IORESOURCE_IO | IORESOURCE_BUSY
 	},
 	{
 		.name = "timer",
 		.start = 0x40,
 		.end = 0x5f,
-		.flags = IORESOURCE_BUSY
+		.flags = IORESOURCE_IO | IORESOURCE_BUSY
 	},
 	{
 		.name = "keyboard",
 		.start = 0x60,
 		.end = 0x6f,
-		.flags = IORESOURCE_BUSY
+		.flags = IORESOURCE_IO | IORESOURCE_BUSY
 	},
 	{
 		.name = "dma page reg",
 		.start = 0x80,
 		.end = 0x8f,
-		.flags = IORESOURCE_BUSY
+		.flags = IORESOURCE_IO | IORESOURCE_BUSY
 	},
 	{
 		.name = "dma2",
 		.start = 0xc0,
 		.end = 0xdf,
-		.flags = IORESOURCE_BUSY
+		.flags = IORESOURCE_IO | IORESOURCE_BUSY
 	},
 };
 

arch/powerpc/kernel/eeh.c

@@ -756,14 +756,14 @@ int eeh_restore_vf_config(struct pci_dn *pdn)
 		eeh_ops->write_config(pdn, edev->pcie_cap + PCI_EXP_DEVCTL,
 				      2, devctl);
 
-		/* Disable Completion Timeout */
+		/* Disable Completion Timeout if possible */
 		eeh_ops->read_config(pdn, edev->pcie_cap + PCI_EXP_DEVCAP2,
 				     4, &cap2);
-		if (cap2 & 0x10) {
+		if (cap2 & PCI_EXP_DEVCAP2_COMP_TMOUT_DIS) {
 			eeh_ops->read_config(pdn,
 					     edev->pcie_cap + PCI_EXP_DEVCTL2,
 					     4, &cap2);
-			cap2 |= 0x10;
+			cap2 |= PCI_EXP_DEVCTL2_COMP_TMOUT_DIS;
 			eeh_ops->write_config(pdn,
 					      edev->pcie_cap + PCI_EXP_DEVCTL2,
 					      4, cap2);

arch/powerpc/kernel/pci-common.c

@@ -362,16 +362,15 @@ struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
  */
 static int pci_read_irq_line(struct pci_dev *pci_dev)
 {
-	struct of_phandle_args oirq;
-	unsigned int virq;
+	unsigned int virq = 0;
 
 	pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
 
 #ifdef DEBUG
 	memset(&oirq, 0xff, sizeof(oirq));
 #endif
 	/* Try to get a mapping from the device-tree */
-	if (of_irq_parse_pci(pci_dev, &oirq)) {
+	if (!of_irq_parse_and_map_pci(pci_dev, 0, 0)) {
 		u8 line, pin;
 
 		/* If that fails, lets fallback to what is in the config
@@ -395,11 +394,6 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
 		virq = irq_create_mapping(NULL, line);
 		if (virq)
 			irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
-	} else {
-		pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %pOF\n",
-			 oirq.args_count, oirq.args[0], oirq.args[1], oirq.np);
-
-		virq = irq_create_of_mapping(&oirq);
 	}
 
 	if (!virq) {