Merge tag 'pci-v5.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Move the VGA arbiter from drivers/gpu to drivers/pci because it's
     PCI-specific, not GPU-specific (Bjorn Helgaas)
   - Select the default VGA device consistently whether it's enumerated
     before or after VGA arbiter init, which fixes arches that enumerate
     PCI devices late (Huacai Chen)

  Resource management:
   - Support BAR sizes up to 8TB (Dongdong Liu)

  PCIe native device hotplug:
   - Fix "Command Completed" tracking to avoid spurious timouts when
     powering off empty slots (Liguang Zhang)
   - Quirk Qualcomm devices that don't implement Command Completed
     correctly, again to avoid spurious timeouts (Manivannan Sadhasivam)

  Peer-to-peer DMA:
   - Add Intel 3rd Gen Intel Xeon Scalable Processors to whitelist
     (Michael J. Ruhl)

  APM X-Gene PCIe controller driver:
   - Revert generic DT parsing changes that broke some machines in the
     field (Marc Zyngier)

  Freescale i.MX6 PCIe controller driver:
   - Allow controller probe to succeed even when no devices currently
     present to allow hot-add later (Fabio Estevam)
   - Enable power management on i.MX6QP (Richard Zhu)
   - Assert CLKREQ# on i.MX8MM so enumeration doesn't hang when no
     device is connected (Richard Zhu)

  Marvell Aardvark PCIe controller driver:
   - Fix MSI and MSI-X support (Marek Behún, Pali Rohár)
   - Add support for ERR and PME interrupts (Pali Rohár)

  Marvell MVEBU PCIe controller driver:
   - Add DT binding and support for "num-lanes" (Pali Rohár)
   - Add support for INTx interrupts (Pali Rohár)

  Microsoft Hyper-V host bridge driver:
   - Avoid unnecessary hypercalls when unmasking IRQs on ARM64 (Boqun
     Feng)

  Qualcomm PCIe controller driver:
   - Add SM8450 DT binding and driver support (Dmitry Baryshkov)

  Renesas R-Car PCIe controller driver:
   - Help the controller get to the L1 state since the hardware can't do
     it on its own (Marek Vasut)
   - Return PCI_ERROR_RESPONSE (~0) for reads that fail on PCIe (Marek
     Vasut)

  SiFive FU740 PCIe controller driver:
   - Drop redundant '-gpios' from DT GPIO lookup (Ben Dooks)
   - Force 2.5GT/s for initial device probe (Ben Dooks)

  Socionext UniPhier Pro5 controller driver:
   - Add NX1 DT binding and driver support (Kunihiko Hayashi)

  Synopsys DesignWare PCIe controller driver:
   - Restore MSI configuration so MSI works after resume (Jisheng
     Zhang)"

* tag 'pci-v5.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits)
  x86/PCI: Add #includes to asm/pci_x86.h
  PCI: ibmphp: Remove unused assignments
  PCI: cpqphp: Remove unused assignments
  PCI: fu740: Remove unused assignments
  PCI: kirin: Remove unused assignments
  PCI: Remove unused assignments
  PCI: Declare pci_filp_private only when HAVE_PCI_MMAP
  PCI: Avoid broken MSI on SB600 USB devices
  PCI: fu740: Force 2.5GT/s for initial device probe
  PCI: xgene: Revert "PCI: xgene: Fix IB window setup"
  PCI: xgene: Revert "PCI: xgene: Use inbound resources for setup"
  PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present
  PCI: imx6: Invoke the PHY exit function after PHY power off
  PCI: rcar: Use PCI_SET_ERROR_RESPONSE after read which triggered an exception
  PCI: rcar: Finish transition to L1 state in rcar_pcie_config_access()
  PCI: dwc: Restore MSI Receiver mask during resume
  PCI: fu740: Drop redundant '-gpios' from DT GPIO lookup
  PCI/VGA: Replace full MIT license text with SPDX identifier
  PCI/VGA: Use unsigned format string to print lock counts
  PCI/VGA: Log bridge control messages when adding devices
  ...

Author: torvalds

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

@@ -77,9 +77,15 @@ and the following optional properties:
 - marvell,pcie-lane: the physical PCIe lane number, for ports having
   multiple lanes. If this property is not found, we assume that the
   value is 0.
+- num-lanes: number of SerDes PCIe lanes for this link (1 or 4)
 - reset-gpios: optional GPIO to PERST#
 - reset-delay-us: delay in us to wait after reset de-assertion, if not
   specified will default to 100ms, as required by the PCIe specification.
+- interrupt-names: list of interrupt names, supported are:
+   - "intx" - interrupt line triggered by one of the legacy interrupt
+- interrupts or interrupts-extended: List of the interrupt sources which
+  corresponding to the "interrupt-names". If non-empty then also additional
+  'interrupt-controller' subnode must be defined.
 
 Example:
 
@@ -141,6 +147,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 58>;
 		marvell,pcie-port = <0>;
 		marvell,pcie-lane = <0>;
+		num-lanes = <1>;
 		/* low-active PERST# reset on GPIO 25 */
 		reset-gpios = <&gpio0 25 1>;
 		/* wait 20ms for device settle after reset deassertion */
@@ -161,6 +168,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 59>;
 		marvell,pcie-port = <0>;
 		marvell,pcie-lane = <1>;
+		num-lanes = <1>;
 		clocks = <&gateclk 6>;
 	};
 
@@ -177,6 +185,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 60>;
 		marvell,pcie-port = <0>;
 		marvell,pcie-lane = <2>;
+		num-lanes = <1>;
 		clocks = <&gateclk 7>;
 	};
 
@@ -193,6 +202,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 61>;
 		marvell,pcie-port = <0>;
 		marvell,pcie-lane = <3>;
+		num-lanes = <1>;
 		clocks = <&gateclk 8>;
 	};
 
@@ -209,6 +219,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 62>;
 		marvell,pcie-port = <1>;
 		marvell,pcie-lane = <0>;
+		num-lanes = <1>;
 		clocks = <&gateclk 9>;
 	};
 
@@ -225,6 +236,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 63>;
 		marvell,pcie-port = <1>;
 		marvell,pcie-lane = <1>;
+		num-lanes = <1>;
 		clocks = <&gateclk 10>;
 	};
 
@@ -241,6 +253,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 64>;
 		marvell,pcie-port = <1>;
 		marvell,pcie-lane = <2>;
+		num-lanes = <1>;
 		clocks = <&gateclk 11>;
 	};
 
@@ -257,6 +270,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 65>;
 		marvell,pcie-port = <1>;
 		marvell,pcie-lane = <3>;
+		num-lanes = <1>;
 		clocks = <&gateclk 12>;
 	};
 
@@ -273,6 +287,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 99>;
 		marvell,pcie-port = <2>;
 		marvell,pcie-lane = <0>;
+		num-lanes = <1>;
 		clocks = <&gateclk 26>;
 	};
 
@@ -289,6 +304,7 @@ pcie-controller {
 		interrupt-map = <0 0 0 0 &mpic 103>;
 		marvell,pcie-port = <3>;
 		marvell,pcie-lane = <0>;
+		num-lanes = <1>;
 		clocks = <&gateclk 27>;
 	};
 };

Documentation/devicetree/bindings/pci/qcom,pcie.txt

@@ -15,6 +15,8 @@
 			- "qcom,pcie-sc8180x" for sc8180x
 			- "qcom,pcie-sdm845" for sdm845
 			- "qcom,pcie-sm8250" for sm8250
+			- "qcom,pcie-sm8450-pcie0" for PCIe0 on sm8450
+			- "qcom,pcie-sm8450-pcie1" for PCIe1 on sm8450
 			- "qcom,pcie-ipq6018" for ipq6018
 
 - reg:
@@ -169,6 +171,24 @@
 			- "ddrss_sf_tbu" PCIe SF TBU clock
 			- "pipe"	PIPE clock
 
+- clock-names:
+	Usage: required for sm8450-pcie0 and sm8450-pcie1
+	Value type: <stringlist>
+	Definition: Should contain the following entries
+			- "aux"         Auxiliary clock
+			- "cfg"         Configuration clock
+			- "bus_master"  Master AXI clock
+			- "bus_slave"   Slave AXI clock
+			- "slave_q2a"   Slave Q2A clock
+			- "tbu"         PCIe TBU clock
+			- "ddrss_sf_tbu" PCIe SF TBU clock
+			- "pipe"        PIPE clock
+			- "pipe_mux"    PIPE MUX
+			- "phy_pipe"    PIPE output clock
+			- "ref"         REFERENCE clock
+			- "aggre0"	Aggre NoC PCIe0 AXI clock, only for sm8450-pcie0
+			- "aggre1"	Aggre NoC PCIe1 AXI clock
+
 - resets:
 	Usage: required
 	Value type: <prop-encoded-array>
@@ -246,7 +266,7 @@
 			- "ahb"			AHB reset
 
 - reset-names:
-	Usage: required for sc8180x, sdm845 and sm8250
+	Usage: required for sc8180x, sdm845, sm8250 and sm8450
 	Value type: <stringlist>
 	Definition: Should contain the following entries
 			- "pci"			PCIe core reset

Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml

@@ -20,7 +20,9 @@ allOf:
 
 properties:
   compatible:
-    const: socionext,uniphier-pro5-pcie-ep
+    enum:
+      - socionext,uniphier-pro5-pcie-ep
+      - socionext,uniphier-nx1-pcie-ep
 
   reg:
     minItems: 4
@@ -41,20 +43,26 @@ properties:
           - const: atu
 
   clocks:
+    minItems: 1
     maxItems: 2
 
   clock-names:
-    items:
-      - const: gio
-      - const: link
+    oneOf:
+      - items:              # for Pro5
+          - const: gio
+          - const: link
+      - const: link         # for NX1
 
   resets:
+    minItems: 1
     maxItems: 2
 
   reset-names:
-    items:
-      - const: gio
-      - const: link
+    oneOf:
+      - items:              # for Pro5
+          - const: gio
+          - const: link
+      - const: link         # for NX1
 
   num-ib-windows:
     const: 16

Documentation/gpu/vgaarbiter.rst

@@ -100,7 +100,7 @@ In-kernel interface
 .. kernel-doc:: include/linux/vgaarb.h
    :internal:
 
-.. kernel-doc:: drivers/gpu/vga/vgaarb.c
+.. kernel-doc:: drivers/pci/vgaarb.c
    :export:
 
 libpciaccess

MAINTAINERS

@@ -14938,6 +14938,7 @@ F:	drivers/pci/controller/mobiveil/pcie-mobiveil*
 
 PCI DRIVER FOR MVEBU (Marvell Armada 370 and Armada XP SOC support)
 M:	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
+M:	Pali Rohár <pali@kernel.org>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained

arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h

@@ -1380,8 +1380,6 @@
 
 #define PCIE_IDVAL3_REG			0x43c
 #define IDVAL3_CLASS_CODE_MASK		0xffffff
-#define IDVAL3_SUBCLASS_SHIFT		8
-#define IDVAL3_CLASS_SHIFT		16
 
 #define PCIE_DLSTATUS_REG		0x1048
 #define DLSTATUS_PHYLINKUP		(1 << 13)

arch/mips/pci/fixup-sb1250.c

@@ -75,7 +75,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_PCI,
  */
 static void quirk_sb1250_ht(struct pci_dev *dev)
 {
-	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+	dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_HT,
 			quirk_sb1250_ht);

arch/mips/pci/pci-bcm63xx.c

@@ -186,7 +186,7 @@ static int __init bcm63xx_register_pcie(void)
 	/* setup class code as bridge */
 	val = bcm_pcie_readl(PCIE_IDVAL3_REG);
 	val &= ~IDVAL3_CLASS_CODE_MASK;
-	val |= (PCI_CLASS_BRIDGE_PCI << IDVAL3_SUBCLASS_SHIFT);
+	val |= PCI_CLASS_BRIDGE_PCI_NORMAL;
 	bcm_pcie_writel(val, PCIE_IDVAL3_REG);
 
 	/* disable bar1 size */

arch/powerpc/platforms/powernv/pci.c

@@ -815,7 +815,7 @@ void pnv_pci_shutdown(void)
 /* Fixup wrong class code in p7ioc and p8 root complex */
 static void pnv_p7ioc_rc_quirk(struct pci_dev *dev)
 {
-	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+	dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, 0x3b9, pnv_p7ioc_rc_quirk);
 

arch/powerpc/sysdev/fsl_pci.c

@@ -55,7 +55,7 @@ static void quirk_fsl_pcie_early(struct pci_dev *dev)
 	if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE)
 		return;
 
-	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+	dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL;
 	fsl_pcie_bus_fixup = 1;
 	return;
 }