Merge tag 'pci-v6.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Rework portdrv shutdown so it disables interrupts but doesn't
     disable bus mastering, which leads to hangs on Loongson LS7A

   - Add mechanism to prevent Max_Read_Request_Size (MRRS) increases,
     again to avoid hardware issues on Loongson LS7A (and likely other
     devices based on DesignWare IP)

   - Ignore devices with a firmware (DT or ACPI) node that says the
     device is disabled

  Resource management:

   - Distribute spare resources to unconfigured hotplug bridges at
     boot-time (not just when hot-adding such a bridge), which makes
     hot-adding devices to docks work better. Tried this in v6.1 but had
     to revert for regressions, so try again

   - Fix root bus issue that dropped resources that happened to end
     at 0, e.g., [bus 00]

  PCI device hotplug:

   - Remove device locking when marking device as disconnected so this
     doesn't have to wait for concurrent driver bind/unbind to complete

   - Quirk more Qualcomm bridges that don't fully implement the PCIe
     Slot Status 'Command Completed' bit

  Power management:

   - Account for _S0W of the target bridge in acpi_pci_bridge_d3() so we
     don't miss hot-add notifications for USB4 docks, Thunderbolt, etc

  Reset:

   - Observe delay after reset, e.g., resuming from system sleep,
     regardless of whether a bridge can suspend to D3cold at runtime

   - Wait for secondary bus to become ready after a bridge reset

  Virtualization:

   - Avoid FLR on some AMD FCH AHCI adapters where it doesn't work

   - Allow independent IOMMU groups for some Wangxun NICs that prevent
     peer-to-peer transactions but don't advertise an ACS Capability

  Error handling:

   - Configure End-to-End-CRC (ECRC) only if Linux owns the AER
     Capability

   - Remove redundant Device Control Error Reporting Enable in the AER
     service driver since this is already done for all devices during
     enumeration

  ASPM:

   - Add pci_enable_link_state() interface to allow drivers to enable
     ASPM link state

  Endpoint framework:

   - Move dra7xx and tegra194 linkup processing from hard IRQ to
     threaded IRQ handler

   - Add a separate lock for endpoint controller list of endpoint
     function drivers to prevent deadlock in callbacks

   - Pass events from endpoint controller to endpoint function drivers
     via callbacks instead of notifiers

  Synopsys DesignWare eDMA controller driver (acked by Vinod):

   - Fix CPU vs PCI address issues

   - Fix source vs destination address issues

   - Fix issues with interleaved transfer semantics

   - Fix channel count initialization issue (issue still exists in
     several other drivers)

   - Clean up and improve debugfs usage so it will work on platforms
     with several eDMA devices

  Baikal T-1 PCIe controller driver:

   - Set a 64-bit DMA mask

  Freescale i.MX6 PCIe controller driver:

   - Add i.MX8MM, i.MX8MQ, i.MX8MP endpoint mode DT binding and driver
     support

  Intel VMD host bridge driver:

   - Add quirk to configure PCIe ASPM and LTR. This is normally done by
     BIOS, and will be for future products

  Marvell MVEBU PCIe controller driver:

   - Mark this driver as broken in Kconfig since bugs prevent its daily
     usage

  MediaTek MT7621 PCIe controller driver:

   - Delay PHY port initialization to improve boot reliability for ZBT
     WE1326, ZBT WF3526-P, and some Netgear models

  Qualcomm PCIe controller driver:

   - Add MSM8998 DT compatible string

   - Unify MSM8996 and MSM8998 clock orderings

   - Add SM8350 DT binding and driver support

   - Add IPQ8074 Gen3 DT binding and driver support

   - Correct qcom,perst-regs in DT binding

   - Add qcom_pcie_host_deinit() so the PHY is powered off and
     regulators and clocks are disabled on late host-init errors

  Socionext UniPhier Pro5 controller driver:

   - Clean up uniphier-ep reg, clocks, resets, and their names in DT
     binding

  Synopsys DesignWare PCIe controller driver:

   - Restrict coherent DMA mask to 32 bits for MSI, but allow controller
     drivers to set 64-bit streaming DMA mask

   - Add eDMA engine support in both Root Port and Endpoint controllers

  Miscellaneous:

   - Remove MODULE_LICENSE from boolean drivers so they don't look like
     modules so modprobe can complain about them"

* tag 'pci-v6.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (86 commits)
  PCI: dwc: Add Root Port and Endpoint controller eDMA engine support
  PCI: bt1: Set 64-bit DMA mask
  PCI: dwc: Restrict only coherent DMA mask for MSI address allocation
  dmaengine: dw-edma: Prepare dw_edma_probe() for builtin callers
  dmaengine: dw-edma: Depend on DW_EDMA instead of selecting it
  dmaengine: dw-edma: Add mem-mapped LL-entries support
  PCI: Remove MODULE_LICENSE so boolean drivers don't look like modules
  PCI: hv: Drop duplicate PCI_MSI dependency
  PCI/P2PDMA: Annotate RCU dereference
  PCI/sysfs: Constify struct kobj_type pci_slot_ktype
  PCI: hotplug: Allow marking devices as disconnected during bind/unbind
  PCI: pciehp: Add Qualcomm quirk for Command Completed erratum
  PCI: qcom: Add IPQ8074 Gen3 port support
  dt-bindings: PCI: qcom: Add IPQ8074 Gen3 port
  dt-bindings: PCI: qcom: Sort compatibles alphabetically
  PCI: qcom: Fix host-init error handling
  PCI: qcom: Add SM8350 support
  dt-bindings: PCI: qcom: Add SM8350
  dt-bindings: PCI: qcom-ep: Correct qcom,perst-regs
  dt-bindings: PCI: qcom: Unify MSM8996 and MSM8998 clock order
  ...

Author: torvalds

Documentation/admin-guide/kernel-parameters.txt

@@ -4303,7 +4303,9 @@
 				specified, e.g., 12@pci:8086:9c22:103c:198f
 				for 4096-byte alignment.
 		ecrc=		Enable/disable PCIe ECRC (transaction layer
-				end-to-end CRC checking).
+				end-to-end CRC checking). Only effective if
+				OS has native AER control (either granted by
+				ACPI _OSC or forced via "pcie_ports=native")
 				bios: Use BIOS/firmware settings. This is the
 				the default.
 				off: Turn ECRC off

Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml

@@ -24,6 +24,9 @@ properties:
       - fsl,imx8mq-pcie
       - fsl,imx8mm-pcie
       - fsl,imx8mp-pcie
+      - fsl,imx8mm-pcie-ep
+      - fsl,imx8mq-pcie-ep
+      - fsl,imx8mp-pcie-ep
 
   reg:
     items:

Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml

@@ -47,8 +47,10 @@ properties:
                  enable registers
     $ref: "/schemas/types.yaml#/definitions/phandle-array"
     items:
-      minItems: 3
-      maxItems: 3
+      - items:
+          - description: Syscon to TCSR system registers
+          - description: Perst enable offset
+          - description: Perst separation enable offset
 
   interrupts:
     items:

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

@@ -16,25 +16,31 @@ description: |
 
 properties:
   compatible:
-    enum:
-      - qcom,pcie-ipq8064
-      - qcom,pcie-ipq8064-v2
-      - qcom,pcie-apq8064
-      - qcom,pcie-apq8084
-      - qcom,pcie-msm8996
-      - qcom,pcie-ipq4019
-      - qcom,pcie-ipq8074
-      - qcom,pcie-qcs404
-      - qcom,pcie-sa8540p
-      - qcom,pcie-sc7280
-      - qcom,pcie-sc8180x
-      - qcom,pcie-sc8280xp
-      - qcom,pcie-sdm845
-      - qcom,pcie-sm8150
-      - qcom,pcie-sm8250
-      - qcom,pcie-sm8450-pcie0
-      - qcom,pcie-sm8450-pcie1
-      - qcom,pcie-ipq6018
+    oneOf:
+      - enum:
+          - qcom,pcie-apq8064
+          - qcom,pcie-apq8084
+          - qcom,pcie-ipq4019
+          - qcom,pcie-ipq6018
+          - qcom,pcie-ipq8064
+          - qcom,pcie-ipq8064-v2
+          - qcom,pcie-ipq8074
+          - qcom,pcie-ipq8074-gen3
+          - qcom,pcie-msm8996
+          - qcom,pcie-qcs404
+          - qcom,pcie-sa8540p
+          - qcom,pcie-sc7280
+          - qcom,pcie-sc8180x
+          - qcom,pcie-sc8280xp
+          - qcom,pcie-sdm845
+          - qcom,pcie-sm8150
+          - qcom,pcie-sm8250
+          - qcom,pcie-sm8350
+          - qcom,pcie-sm8450-pcie0
+          - qcom,pcie-sm8450-pcie1
+      - items:
+          - const: qcom,pcie-msm8998
+          - const: qcom,pcie-msm8996
 
   reg:
     minItems: 4
@@ -153,6 +159,7 @@ allOf:
           contains:
             enum:
               - qcom,pcie-ipq6018
+              - qcom,pcie-ipq8074-gen3
     then:
       properties:
         reg:
@@ -195,6 +202,7 @@ allOf:
               - qcom,pcie-sc8180x
               - qcom,pcie-sc8280xp
               - qcom,pcie-sm8250
+              - qcom,pcie-sm8350
               - qcom,pcie-sm8450-pcie0
               - qcom,pcie-sm8450-pcie1
     then:
@@ -312,27 +320,17 @@ allOf:
             enum:
               - qcom,pcie-msm8996
     then:
-      oneOf:
-        - properties:
-            clock-names:
-              items:
-                - const: pipe # Pipe Clock driving internal logic
-                - const: aux # Auxiliary (AUX) clock
-                - const: cfg # Configuration clock
-                - const: bus_master # Master AXI clock
-                - const: bus_slave # Slave AXI clock
-        - properties:
-            clock-names:
-              items:
-                - const: pipe # Pipe Clock driving internal logic
-                - const: bus_master # Master AXI clock
-                - const: bus_slave # Slave AXI clock
-                - const: cfg # Configuration clock
-                - const: aux # Auxiliary (AUX) clock
       properties:
         clocks:
           minItems: 5
           maxItems: 5
+        clock-names:
+          items:
+            - const: pipe # Pipe Clock driving internal logic
+            - const: aux # Auxiliary (AUX) clock
+            - const: cfg # Configuration clock
+            - const: bus_master # Master AXI clock
+            - const: bus_slave # Slave AXI clock
         resets: false
         reset-names: false
 
@@ -373,6 +371,7 @@ allOf:
           contains:
             enum:
               - qcom,pcie-ipq6018
+              - qcom,pcie-ipq8074-gen3
     then:
       properties:
         clocks:
@@ -550,6 +549,35 @@ allOf:
           items:
             - const: pci # PCIe core reset
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,pcie-sm8350
+    then:
+      properties:
+        clocks:
+          minItems: 8
+          maxItems: 9
+        clock-names:
+          minItems: 8
+          items:
+            - const: aux # Auxiliary clock
+            - const: cfg # Configuration clock
+            - const: bus_master # Master AXI clock
+            - const: bus_slave # Slave AXI clock
+            - const: slave_q2a # Slave Q2A clock
+            - const: tbu # PCIe TBU clock
+            - const: ddrss_sf_tbu # PCIe SF TBU clock
+            - const: aggre1 # Aggre NoC PCIe1 AXI clock
+            - const: aggre0 # Aggre NoC PCIe0 AXI clock
+        resets:
+          maxItems: 1
+        reset-names:
+          items:
+            - const: pci # PCIe core reset
+
   - if:
       properties:
         compatible:
@@ -664,6 +692,7 @@ allOf:
                 - qcom,pcie-ipq8064
                 - qcom,pcie-ipq8064v2
                 - qcom,pcie-ipq8074
+                - qcom,pcie-ipq8074-gen3
                 - qcom,pcie-qcs404
     then:
       required:
@@ -692,6 +721,7 @@ allOf:
               - qcom,pcie-sdm845
               - qcom,pcie-sm8150
               - qcom,pcie-sm8250
+              - qcom,pcie-sm8350
               - qcom,pcie-sm8450-pcie0
               - qcom,pcie-sm8450-pcie1
     then:
@@ -746,6 +776,7 @@ allOf:
               - qcom,pcie-ipq8064
               - qcom,pcie-ipq8064-v2
               - qcom,pcie-ipq8074
+              - qcom,pcie-ipq8074-gen3
               - qcom,pcie-qcs404
               - qcom,pcie-sa8540p
     then:

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

@@ -15,9 +15,6 @@ description: |
 maintainers:
   - Kunihiko Hayashi <[email protected]>
 
-allOf:
-  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
-
 properties:
   compatible:
     enum:
@@ -29,40 +26,25 @@ properties:
     maxItems: 5
 
   reg-names:
-    oneOf:
-      - items:
-          - const: dbi
-          - const: dbi2
-          - const: link
-          - const: addr_space
-      - items:
-          - const: dbi
-          - const: dbi2
-          - const: link
-          - const: addr_space
-          - const: atu
+    minItems: 4
+    items:
+      - const: dbi
+      - const: dbi2
+      - const: link
+      - const: addr_space
+      - const: atu
 
   clocks:
     minItems: 1
     maxItems: 2
 
-  clock-names:
-    oneOf:
-      - items:              # for Pro5
-          - const: gio
-          - const: link
-      - const: link         # for NX1
+  clock-names: true
 
   resets:
     minItems: 1
     maxItems: 2
 
-  reset-names:
-    oneOf:
-      - items:              # for Pro5
-          - const: gio
-          - const: link
-      - const: link         # for NX1
+  reset-names: true
 
   num-ib-windows:
     const: 16
@@ -78,6 +60,46 @@ properties:
   phy-names:
     const: pcie-phy
 
+allOf:
+  - $ref: /schemas/pci/snps,dw-pcie-ep.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: socionext,uniphier-pro5-pcie-ep
+    then:
+      properties:
+        reg:
+          maxItems: 4
+        reg-names:
+          maxItems: 4
+        clocks:
+          minItems: 2
+        clock-names:
+          items:
+            - const: gio
+            - const: link
+        resets:
+          minItems: 2
+        reset-names:
+          items:
+            - const: gio
+            - const: link
+    else:
+      properties:
+        reg:
+          minItems: 5
+        reg-names:
+          minItems: 5
+        clocks:
+          maxItems: 1
+        clock-names:
+          const: link
+        resets:
+          maxItems: 1
+        reset-names:
+          const: link
+
 required:
   - compatible
   - reg

drivers/acpi/device_pm.c

@@ -484,6 +484,25 @@ void acpi_dev_power_up_children_with_adr(struct acpi_device *adev)
 	acpi_dev_for_each_child(adev, acpi_power_up_if_adr_present, NULL);
 }
 
+/**
+ * acpi_dev_power_state_for_wake - Deepest power state for wakeup signaling
+ * @adev: ACPI companion of the target device.
+ *
+ * Evaluate _S0W for @adev and return the value produced by it or return
+ * ACPI_STATE_UNKNOWN on errors (including _S0W not present).
+ */
+u8 acpi_dev_power_state_for_wake(struct acpi_device *adev)
+{
+	unsigned long long state;
+	acpi_status status;
+
+	status = acpi_evaluate_integer(adev->handle, "_S0W", NULL, &state);
+	if (ACPI_FAILURE(status))
+		return ACPI_STATE_UNKNOWN;
+
+	return state;
+}
+
 #ifdef CONFIG_PM
 static DEFINE_MUTEX(acpi_pm_notifier_lock);
 static DEFINE_MUTEX(acpi_pm_notifier_install_lock);

drivers/dma/dw-edma/Kconfig

@@ -9,11 +9,14 @@ config DW_EDMA
 	  Support the Synopsys DesignWare eDMA controller, normally
 	  implemented on endpoints SoCs.
 
+if DW_EDMA
+
 config DW_EDMA_PCIE
 	tristate "Synopsys DesignWare eDMA PCIe driver"
 	depends on PCI && PCI_MSI
-	select DW_EDMA
 	help
 	  Provides a glue-logic between the Synopsys DesignWare
 	  eDMA controller and an endpoint PCIe device. This also serves
 	  as a reference design to whom desires to use this IP.
+
+endif # DW_EDMA