Merge tag 'pci-v4.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull more PCI updates from Bjorn Helgaas:

 - squash AER directory into drivers/pci/pcie/aer.c (Bjorn Helgaas)

 - collect all native hardware drivers under drivers/pci/controller/
   (Shawn Lin)

* tag 'pci-v4.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/AER: Use "PCI Express" consistently in Kconfig text
  PCI/AER: Hoist aerdrv.c, aer_inject.c up to drivers/pci/pcie/
  PCI/AER: Squash Kconfig.debug into Kconfig
  PCI/AER: Move private AER things to aerdrv.c
  PCI/AER: Move aer_irq() declaration to portdrv.h
  PCI/AER: Move pcie_aer_get_firmware_first() to portdrv.h
  PCI/AER: Remove duplicate pcie_port_bus_type declaration
  PCI/AER: Squash ecrc.c into aerdrv.c
  PCI/AER: Squash aerdrv_acpi.c into aerdrv.c
  PCI/AER: Squash aerdrv_errprint.c into aerdrv.c
  PCI/AER: Squash aerdrv_core.c into aerdrv.c
  PCI/AER: Reorder code to group probe/remove stuff together
  PCI/AER: Remove forward declarations
  PCI: Collect all native drivers under drivers/pci/controller/

79 files changed, 1509 insertions, 1626 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index def2850a1b19..c13b9fb3be0b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6620,7 +6620,7 @@ F:	arch/x86/hyperv
 F:	drivers/hid/hid-hyperv.c
 F:	drivers/hv/
 F:	drivers/input/serio/hyperv-keyboard.c
-F:	drivers/pci/host/pci-hyperv.c
+F:	drivers/pci/controller/pci-hyperv.c
 F:	drivers/net/hyperv/
 F:	drivers/scsi/storvsc_drv.c
 F:	drivers/uio/uio_hv_generic.c
@@ -9524,7 +9524,7 @@ M:	Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
 L:	linux-pci@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
-F:	drivers/pci/host/pcie-mobiveil.c
+F:	drivers/pci/controller/pcie-mobiveil.c
 
 MODULE SUPPORT
 M:	Jessica Yu <jeyu@kernel.org>
@@ -10829,7 +10829,7 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/aardvark-pci.txt
-F:	drivers/pci/host/pci-aardvark.c
+F:	drivers/pci/controller/pci-aardvark.c
 
 PCI DRIVER FOR ALTERA PCIE IP
 M:	Ley Foon Tan <lftan@altera.com>
@@ -10837,7 +10837,7 @@ L:	rfi@lists.rocketboards.org (moderated for non-subscribers)
 L:	linux-pci@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/altera-pcie.txt
-F:	drivers/pci/host/pcie-altera.c
+F:	drivers/pci/controller/pcie-altera.c
 
 PCI DRIVER FOR APPLIEDMICRO XGENE
 M:	Tanmay Inamdar <tinamdar@apm.com>
@@ -10845,7 +10845,7 @@ 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
+F:	drivers/pci/controller/pci-xgene.c
 
 PCI DRIVER FOR ARM VERSATILE PLATFORM
 M:	Rob Herring <robh@kernel.org>
@@ -10853,7 +10853,7 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/versatile.txt
-F:	drivers/pci/host/pci-versatile.c
+F:	drivers/pci/controller/pci-versatile.c
 
 PCI DRIVER FOR ARMADA 8K
 M:	Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
@@ -10861,14 +10861,14 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
-F:	drivers/pci/dwc/pcie-armada8k.c
+F:	drivers/pci/controller/dwc/pcie-armada8k.c
 
 PCI DRIVER FOR CADENCE PCIE IP
 M:	Alan Douglas <adouglas@cadence.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/cdns,*.txt
-F:	drivers/pci/cadence/pcie-cadence*
+F:	drivers/pci/controller/pcie-cadence*
 
 PCI DRIVER FOR FREESCALE LAYERSCAPE
 M:	Minghuan Lian <minghuan.Lian@nxp.com>
@@ -10878,16 +10878,16 @@ L:	linuxppc-dev@lists.ozlabs.org
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org
 S:	Maintained
-F:	drivers/pci/dwc/*layerscape*
+F:	drivers/pci/controller/dwc/*layerscape*
 
 PCI DRIVER FOR GENERIC OF HOSTS
 M:	Will Deacon <will.deacon@arm.com>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-F:	Documentation/devicetree/bindings/pci/host-generic-pci.txt
-F:	drivers/pci/host/pci-host-common.c
-F:	drivers/pci/host/pci-host-generic.c
+F:	Documentation/devicetree/bindings/pci/controller-generic-pci.txt
+F:	drivers/pci/controller/pci-host-common.c
+F:	drivers/pci/controller/pci-host-generic.c
 
 PCI DRIVER FOR IMX6
 M:	Richard Zhu <hongxing.zhu@nxp.com>
@@ -10896,14 +10896,14 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
-F:	drivers/pci/dwc/*imx6*
+F:	drivers/pci/controller/dwc/*imx6*
 
 PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
 M:	Keith Busch <keith.busch@intel.com>
 M:	Jonathan Derrick <jonathan.derrick@intel.com>
 L:	linux-pci@vger.kernel.org
 S:	Supported
-F:	drivers/pci/host/vmd.c
+F:	drivers/pci/controller/vmd.c
 
 PCI DRIVER FOR MICROSEMI SWITCHTEC
 M:	Kurt Schwemmer <kurt.schwemmer@microsemi.com>
@@ -10923,7 +10923,7 @@ M:	Jason Cooper <jason@lakedaemon.net>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/host/*mvebu*
+F:	drivers/pci/controller/*mvebu*
 
 PCI DRIVER FOR NVIDIA TEGRA
 M:	Thierry Reding <thierry.reding@gmail.com>
@@ -10931,14 +10931,14 @@ L:	linux-tegra@vger.kernel.org
 L:	linux-pci@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
-F:	drivers/pci/host/pci-tegra.c
+F:	drivers/pci/controller/pci-tegra.c
 
 PCI DRIVER FOR RENESAS R-CAR
 M:	Simon Horman <horms@verge.net.au>
 L:	linux-pci@vger.kernel.org
 L:	linux-renesas-soc@vger.kernel.org
 S:	Maintained
-F:	drivers/pci/host/*rcar*
+F:	drivers/pci/controller/*rcar*
 
 PCI DRIVER FOR SAMSUNG EXYNOS
 M:	Jingoo Han <jingoohan1@gmail.com>
@@ -10946,7 +10946,7 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-samsung-soc@vger.kernel.org (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/dwc/pci-exynos.c
+F:	drivers/pci/controller/dwc/pci-exynos.c
 
 PCI DRIVER FOR SYNOPSYS DESIGNWARE
 M:	Jingoo Han <jingoohan1@gmail.com>
@@ -10954,7 +10954,7 @@ M:	Joao Pinto <Joao.Pinto@synopsys.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/designware-pcie.txt
-F:	drivers/pci/dwc/*designware*
+F:	drivers/pci/controller/dwc/*designware*
 
 PCI DRIVER FOR TI DRA7XX
 M:	Kishon Vijay Abraham I <kishon@ti.com>
@@ -10962,14 +10962,14 @@ L:	linux-omap@vger.kernel.org
 L:	linux-pci@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/ti-pci.txt
-F:	drivers/pci/dwc/pci-dra7xx.c
+F:	drivers/pci/controller/dwc/pci-dra7xx.c
 
 PCI DRIVER FOR TI KEYSTONE
 M:	Murali Karicheri <m-karicheri2@ti.com>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
-F:	drivers/pci/dwc/*keystone*
+F:	drivers/pci/controller/dwc/*keystone*
 
 PCI ENDPOINT SUBSYSTEM
 M:	Kishon Vijay Abraham I <kishon@ti.com>
@@ -11002,7 +11002,7 @@ L:	rfi@lists.rocketboards.org (moderated for non-subscribers)
 L:	linux-pci@vger.kernel.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
-F:	drivers/pci/host/pcie-altera-msi.c
+F:	drivers/pci/controller/pcie-altera-msi.c
 
 PCI MSI DRIVER FOR APPLIEDMICRO XGENE
 M:	Duc Dang <dhdang@apm.com>
@@ -11010,7 +11010,7 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/xgene-pci-msi.txt
-F:	drivers/pci/host/pci-xgene-msi.c
+F:	drivers/pci/controller/pci-xgene-msi.c
 
 PCI SUBSYSTEM
 M:	Bjorn Helgaas <bhelgaas@google.com>
@@ -11036,9 +11036,7 @@ L:	linux-pci@vger.kernel.org
 Q:	http://patchwork.ozlabs.org/project/linux-pci/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/
 S:	Supported
-F:	drivers/pci/cadence/
-F:	drivers/pci/host/
-F:	drivers/pci/dwc/
+F:	drivers/pci/controller/
 
 PCIE DRIVER FOR AXIS ARTPEC
 M:	Jesper Nilsson <jesper.nilsson@axis.com>
@@ -11046,7 +11044,7 @@ L:	linux-arm-kernel@axis.com
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/axis,artpec*
-F:	drivers/pci/dwc/*artpec*
+F:	drivers/pci/controller/dwc/*artpec*
 
 PCIE DRIVER FOR CAVIUM THUNDERX
 M:	David Daney <david.daney@cavium.com>
@@ -11054,14 +11052,14 @@ L:	linux-pci@vger.kernel.org
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/pci-thunder-*
-F:	drivers/pci/host/pci-thunder-*
+F:	drivers/pci/controller/pci-thunder-*
 
 PCIE DRIVER FOR HISILICON
 M:	Zhou Wang <wangzhou1@hisilicon.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/hisilicon-pcie.txt
-F:	drivers/pci/dwc/pcie-hisi.c
+F:	drivers/pci/controller/dwc/pcie-hisi.c
 
 PCIE DRIVER FOR HISILICON KIRIN
 M:	Xiaowei Song <songxiaowei@hisilicon.com>
@@ -11069,7 +11067,7 @@ M:	Binghui Wang <wangbinghui@hisilicon.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/pcie-kirin.txt
-F:	drivers/pci/dwc/pcie-kirin.c
+F:	drivers/pci/controller/dwc/pcie-kirin.c
 
 PCIE DRIVER FOR HISILICON STB
 M:	Jianguo Sun <sunjianguo1@huawei.com>
@@ -11077,7 +11075,7 @@ M:	Shawn Guo <shawn.guo@linaro.org>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/hisilicon-histb-pcie.txt
-F:	drivers/pci/dwc/pcie-histb.c
+F:	drivers/pci/controller/dwc/pcie-histb.c
 
 PCIE DRIVER FOR MEDIATEK
 M:	Ryder Lee <ryder.lee@mediatek.com>
@@ -11085,14 +11083,14 @@ L:	linux-pci@vger.kernel.org
 L:	linux-mediatek@lists.infradead.org
 S:	Supported
 F:	Documentation/devicetree/bindings/pci/mediatek*
-F:	drivers/pci/host/*mediatek*
+F:	drivers/pci/controller/*mediatek*
 
 PCIE DRIVER FOR QUALCOMM MSM
 M:	Stanimir Varbanov <svarbanov@mm-sol.com>
 L:	linux-pci@vger.kernel.org
 L:	linux-arm-msm@vger.kernel.org
 S:	Maintained
-F:	drivers/pci/dwc/*qcom*
+F:	drivers/pci/controller/dwc/*qcom*
 
 PCIE DRIVER FOR ROCKCHIP
 M:	Shawn Lin <shawn.lin@rock-chips.com>
@@ -11100,20 +11098,20 @@ L:	linux-pci@vger.kernel.org
 L:	linux-rockchip@lists.infradead.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/rockchip-pcie*
-F:	drivers/pci/host/pcie-rockchip*
+F:	drivers/pci/controller/pcie-rockchip*
 
 PCI DRIVER FOR V3 SEMICONDUCTOR V360EPC
 M:	Linus Walleij <linus.walleij@linaro.org>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/v3-v360epc-pci.txt
-F:	drivers/pci/host/pci-v3-semi.c
+F:	drivers/pci/controller/pci-v3-semi.c
 
 PCIE DRIVER FOR ST SPEAR13XX
 M:	Pratyush Anand <pratyush.anand@gmail.com>
 L:	linux-pci@vger.kernel.org
 S:	Maintained
-F:	drivers/pci/dwc/*spear*
+F:	drivers/pci/controller/dwc/*spear*
 
 PCMCIA SUBSYSTEM
 M:	Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b2f07635e94d..56ff8f6d31fc 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -145,8 +145,6 @@ config PCI_HYPERV
           PCI devices from a PCI backend to support PCI driver domains.
 
 source "drivers/pci/hotplug/Kconfig"
-source "drivers/pci/cadence/Kconfig"
-source "drivers/pci/dwc/Kconfig"
-source "drivers/pci/host/Kconfig"
+source "drivers/pci/controller/Kconfig"
 source "drivers/pci/endpoint/Kconfig"
 source "drivers/pci/switch/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 84c9eef6b1c3..535201984b8b 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -28,14 +28,10 @@ obj-$(CONFIG_PCI_PF_STUB)	+= pci-pf-stub.o
 obj-$(CONFIG_PCI_ECAM)		+= ecam.o
 obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o
 
-obj-y				+= host/
+obj-y				+= controller/
 obj-y				+= switch/
 
 # Endpoint library must be initialized before its users
 obj-$(CONFIG_PCI_ENDPOINT)	+= endpoint/
 
-obj-$(CONFIG_PCIE_CADENCE)	+= cadence/
-# pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
-obj-y				+= dwc/
-
 ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG
diff --git a/drivers/pci/cadence/Kconfig b/drivers/pci/cadence/Kconfig
deleted file mode 100644
index e6824cb56c16..000000000000
--- a/drivers/pci/cadence/Kconfig
+++ /dev/null
@@ -1,27 +0,0 @@
-menu "Cadence PCIe controllers support"
-
-config PCIE_CADENCE
-	bool
-
-config PCIE_CADENCE_HOST
-	bool "Cadence PCIe host controller"
-	depends on OF
-	depends on PCI
-	select IRQ_DOMAIN
-	select PCIE_CADENCE
-	help
-	  Say Y here if you want to support the Cadence PCIe controller in host
-	  mode. This PCIe controller may be embedded into many different vendors
-	  SoCs.
-
-config PCIE_CADENCE_EP
-	bool "Cadence PCIe endpoint controller"
-	depends on OF
-	depends on PCI_ENDPOINT
-	select PCIE_CADENCE
-	help
-	  Say Y here if you want to support the Cadence PCIe  controller in
-	  endpoint mode. This PCIe controller may be embedded into many
-	  different vendors SoCs.
-
-endmenu
diff --git a/drivers/pci/cadence/Makefile b/drivers/pci/cadence/Makefile
deleted file mode 100644
index 719392b97998..000000000000
--- a/drivers/pci/cadence/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_PCIE_CADENCE) += pcie-cadence.o
-obj-$(CONFIG_PCIE_CADENCE_HOST) += pcie-cadence-host.o
-obj-$(CONFIG_PCIE_CADENCE_EP) += pcie-cadence-ep.o
diff --git a/drivers/pci/host/Kconfig b/drivers/pci/controller/Kconfig
index a96e23bda664..18fa09b3ac8f 100644
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
-menu "PCI host controller drivers"
+menu "PCI controller drivers"
 	depends on PCI
 
 config PCI_MVEBU
@@ -20,6 +20,34 @@ config PCI_AARDVARK
 	 controller is part of the South Bridge of the Marvel Armada
 	 3700 SoC.
 
+menu "Cadence PCIe controllers support"
+
+config PCIE_CADENCE
+	bool
+
+config PCIE_CADENCE_HOST
+	bool "Cadence PCIe host controller"
+	depends on OF
+	depends on PCI
+	select IRQ_DOMAIN
+	select PCIE_CADENCE
+	help
+	  Say Y here if you want to support the Cadence PCIe controller in host
+	  mode. This PCIe controller may be embedded into many different vendors
+	  SoCs.
+
+config PCIE_CADENCE_EP
+	bool "Cadence PCIe endpoint controller"
+	depends on OF
+	depends on PCI_ENDPOINT
+	select PCIE_CADENCE
+	help
+	  Say Y here if you want to support the Cadence PCIe  controller in
+	  endpoint mode. This PCIe controller may be embedded into many
+	  different vendors SoCs.
+
+endmenu
+
 config PCIE_XILINX_NWL
 	bool "NWL PCIe Core"
 	depends on ARCH_ZYNQMP || COMPILE_TEST
@@ -243,4 +271,5 @@ config VMD
 	  To compile this driver as a module, choose M here: the
 	  module will be called vmd.
 
+source "drivers/pci/controller/dwc/Kconfig"
 endmenu
diff --git a/drivers/pci/host/Makefile b/drivers/pci/controller/Makefile
index 11d21b026d37..24322b92f200 100644
--- a/drivers/pci/host/Makefile
+++ b/drivers/pci/controller/Makefile
@@ -1,4 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_PCIE_CADENCE) += pcie-cadence.o
+obj-$(CONFIG_PCIE_CADENCE_HOST) += pcie-cadence-host.o
+obj-$(CONFIG_PCIE_CADENCE_EP) += pcie-cadence-ep.o
 obj-$(CONFIG_PCI_FTPCI100) += pci-ftpci100.o
 obj-$(CONFIG_PCI_HYPERV) += pci-hyperv.o
 obj-$(CONFIG_PCI_MVEBU) += pci-mvebu.o
@@ -25,6 +28,9 @@ obj-$(CONFIG_PCIE_ROCKCHIP_HOST) += pcie-rockchip-host.o
 obj-$(CONFIG_PCIE_MEDIATEK) += pcie-mediatek.o
 obj-$(CONFIG_PCIE_TANGO_SMP8759) += pcie-tango.o
 obj-$(CONFIG_VMD) += vmd.o
+# pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
+obj-y				+= dwc/
+
 
 # The following drivers are for devices that use the generic ACPI
 # pci_root.c driver but don't support standard ECAM config access.
diff --git a/drivers/pci/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 16f52c626b4b..16f52c626b4b 100644
--- a/drivers/pci/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
diff --git a/drivers/pci/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
index 5d2ce72c7a52..5d2ce72c7a52 100644
--- a/drivers/pci/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index f688204e50c5..cfaeef81d868 100644
--- a/drivers/pci/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -27,7 +27,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
 
-#include "../pci.h"
+#include "../../pci.h"
 #include "pcie-designware.h"
 
 /* PCIe controller wrapper DRA7XX configuration registers */
diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 4cc1e5df8c79..4cc1e5df8c79 100644
--- a/drivers/pci/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
diff --git a/drivers/pci/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 80f604602783..80f604602783 100644
--- a/drivers/pci/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
diff --git a/drivers/pci/dwc/pci-keystone-dw.c b/drivers/pci/controller/dwc/pci-keystone-dw.c
index 0682213328e9..0682213328e9 100644
--- a/drivers/pci/dwc/pci-keystone-dw.c
+++ b/drivers/pci/controller/dwc/pci-keystone-dw.c
diff --git a/drivers/pci/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 3722a5f31e5e..3722a5f31e5e 100644
--- a/drivers/pci/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
diff --git a/drivers/pci/dwc/pci-keystone.h b/drivers/pci/controller/dwc/pci-keystone.h
index 8a13da391543..8a13da391543 100644
--- a/drivers/pci/dwc/pci-keystone.h
+++ b/drivers/pci/controller/dwc/pci-keystone.h
diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index 3724d3ef7008..3724d3ef7008 100644
--- a/drivers/pci/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/controller/dwc/pcie-armada8k.c
index 072fd7ecc29f..072fd7ecc29f 100644
--- a/drivers/pci/dwc/pcie-armada8k.c
+++ b/drivers/pci/controller/dwc/pcie-armada8k.c
diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 321b56cfd5d0..321b56cfd5d0 100644
--- a/drivers/pci/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 1eec4415a77f..1eec4415a77f 100644
--- a/drivers/pci/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index cba1432e395d..781aa03aeede 100644
--- a/drivers/pci/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -15,7 +15,7 @@
 #include <linux/pci_regs.h>
 #include <linux/platform_device.h>
 
-#include "../pci.h"
+#include "../../pci.h"
 #include "pcie-designware.h"
 
 static struct pci_ops dw_pcie_ops;
diff --git a/drivers/pci/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 5937fed4c938..5937fed4c938 100644
--- a/drivers/pci/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
diff --git a/drivers/pci/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 778c4f76a884..778c4f76a884 100644
--- a/drivers/pci/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index bee4e2535a61..bee4e2535a61 100644
--- a/drivers/pci/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
diff --git a/drivers/pci/dwc/pcie-hisi.c b/drivers/pci/controller/dwc/pcie-hisi.c
index 2658aaebb993..6d9e1b2b8f7b 100644
--- a/drivers/pci/dwc/pcie-hisi.c
+++ b/drivers/pci/controller/dwc/pcie-hisi.c
@@ -19,7 +19,7 @@
 #include <linux/pci-acpi.h>
 #include <linux/pci-ecam.h>
 #include <linux/regmap.h>
-#include "../pci.h"
+#include "../../pci.h"
 
 #if defined(CONFIG_PCI_HISI) || (defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS))
 
diff --git a/drivers/pci/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index 3611d6ce9a92..3611d6ce9a92 100644
--- a/drivers/pci/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
diff --git a/drivers/pci/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index d2970a009eb5..d2970a009eb5 100644
--- a/drivers/pci/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index a1d0198081a6..a1d0198081a6 100644
--- a/drivers/pci/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
diff --git a/drivers/pci/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index ecb58f7b7566..ecb58f7b7566 100644
--- a/drivers/pci/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index d3172d5d3d35..d3172d5d3d35 100644
--- a/drivers/pci/host/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
diff --git a/drivers/pci/host/pci-ftpci100.c b/drivers/pci/controller/pci-ftpci100.c
index a1ebe9ed441f..a1ebe9ed441f 100644
--- a/drivers/pci/host/pci-ftpci100.c
+++ b/drivers/pci/controller/pci-ftpci100.c
diff --git a/drivers/pci/host/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index d8f10451f273..d8f10451f273 100644
--- a/drivers/pci/host/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
index dea3ec7592a2..dea3ec7592a2 100644
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/controller/pci-host-generic.c
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index 6cc5036ac83c..6cc5036ac83c 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c
index 23e270839e6a..23e270839e6a 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/controller/pci-mvebu.c
diff --git a/drivers/pci/host/pci-rcar-gen2.c b/drivers/pci/controller/pci-rcar-gen2.c
index 326171cb1a97..326171cb1a97 100644
--- a/drivers/pci/host/pci-rcar-gen2.c
+++ b/drivers/pci/controller/pci-rcar-gen2.c
diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index f4f53d092e00..f4f53d092e00 100644
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/controller/pci-thunder-ecam.c
index 32d1d7b81ef4..32d1d7b81ef4 100644
--- a/drivers/pci/host/pci-thunder-ecam.c
+++ b/drivers/pci/controller/pci-thunder-ecam.c
diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/controller/pci-thunder-pem.c
index f127ce8bd4ef..f127ce8bd4ef 100644
--- a/drivers/pci/host/pci-thunder-pem.c
+++ b/drivers/pci/controller/pci-thunder-pem.c
diff --git a/drivers/pci/host/pci-v3-semi.c b/drivers/pci/controller/pci-v3-semi.c
index 68b8bfbdb867..68b8bfbdb867 100644
--- a/drivers/pci/host/pci-v3-semi.c
+++ b/drivers/pci/controller/pci-v3-semi.c
diff --git a/drivers/pci/host/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
index 994f32061b32..994f32061b32 100644
--- a/drivers/pci/host/pci-versatile.c
+++ b/drivers/pci/controller/pci-versatile.c
diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/controller/pci-xgene-msi.c
index f4c02da84e59..f4c02da84e59 100644
--- a/drivers/pci/host/pci-xgene-msi.c
+++ b/drivers/pci/controller/pci-xgene-msi.c
diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
index d854d67e873c..d854d67e873c 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/controller/pci-xgene.c
diff --git a/drivers/pci/host/pcie-altera-msi.c b/drivers/pci/controller/pcie-altera-msi.c
index 025ef7d9a046..025ef7d9a046 100644
--- a/drivers/pci/host/pcie-altera-msi.c
+++ b/drivers/pci/controller/pcie-altera-msi.c
diff --git a/drivers/pci/host/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
index 7d05e51205b3..7d05e51205b3 100644
--- a/drivers/pci/host/pcie-altera.c
+++ b/drivers/pci/controller/pcie-altera.c
diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/controller/pcie-cadence-ep.c
index 3d8283e450a9..3d8283e450a9 100644
--- a/drivers/pci/cadence/pcie-cadence-ep.c
+++ b/drivers/pci/controller/pcie-cadence-ep.c
diff --git a/drivers/pci/cadence/pcie-cadence-host.c b/drivers/pci/controller/pcie-cadence-host.c
index a4ebbd37b553..a4ebbd37b553 100644
--- a/drivers/pci/cadence/pcie-cadence-host.c
+++ b/drivers/pci/controller/pcie-cadence-host.c
diff --git a/drivers/pci/cadence/pcie-cadence.c b/drivers/pci/controller/pcie-cadence.c
index 138d113eb45d..138d113eb45d 100644
--- a/drivers/pci/cadence/pcie-cadence.c
+++ b/drivers/pci/controller/pcie-cadence.c
diff --git a/drivers/pci/cadence/pcie-cadence.h b/drivers/pci/controller/pcie-cadence.h
index 4bb27333b05c..4bb27333b05c 100644
--- a/drivers/pci/cadence/pcie-cadence.h
+++ b/drivers/pci/controller/pcie-cadence.h
diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c
index aa55b064f64d..aa55b064f64d 100644
--- a/drivers/pci/host/pcie-iproc-bcma.c
+++ b/drivers/pci/controller/pcie-iproc-bcma.c
diff --git a/drivers/pci/host/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c
index 9deb56989d72..9deb56989d72 100644
--- a/drivers/pci/host/pcie-iproc-msi.c
+++ b/drivers/pci/controller/pcie-iproc-msi.c
diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
index f30f5f3fb5c1..f30f5f3fb5c1 100644
--- a/drivers/pci/host/pcie-iproc-platform.c
+++ b/drivers/pci/controller/pcie-iproc-platform.c
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c
index 3c76c5fa4f32..3c76c5fa4f32 100644
--- a/drivers/pci/host/pcie-iproc.c
+++ b/drivers/pci/controller/pcie-iproc.c
diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/controller/pcie-iproc.h
index 814b600b383a..814b600b383a 100644
--- a/drivers/pci/host/pcie-iproc.h
+++ b/drivers/pci/controller/pcie-iproc.h
diff --git a/drivers/pci/host/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index 0baabe30858f..0baabe30858f 100644
--- a/drivers/pci/host/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
diff --git a/drivers/pci/host/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c
index 4d6c20e47bed..4d6c20e47bed 100644
--- a/drivers/pci/host/pcie-mobiveil.c
+++ b/drivers/pci/controller/pcie-mobiveil.c
diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
index 874d75c9ee4a..874d75c9ee4a 100644
--- a/drivers/pci/host/pcie-rcar.c
+++ b/drivers/pci/controller/pcie-rcar.c
diff --git a/drivers/pci/host/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index fc267a49a932..fc267a49a932 100644
--- a/drivers/pci/host/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
diff --git a/drivers/pci/host/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c
index 1372d270764f..1372d270764f 100644
--- a/drivers/pci/host/pcie-rockchip-host.c
+++ b/drivers/pci/controller/pcie-rockchip-host.c
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/controller/pcie-rockchip.c
index c53d1322a3d6..c53d1322a3d6 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/controller/pcie-rockchip.c
diff --git a/drivers/pci/host/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index 8e87a059ce73..8e87a059ce73 100644
--- a/drivers/pci/host/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
diff --git a/drivers/pci/host/pcie-tango.c b/drivers/pci/controller/pcie-tango.c
index 21a208da3f59..21a208da3f59 100644
--- a/drivers/pci/host/pcie-tango.c
+++ b/drivers/pci/controller/pcie-tango.c
diff --git a/drivers/pci/host/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c
index 6a4bbb5b3de0..6a4bbb5b3de0 100644
--- a/drivers/pci/host/pcie-xilinx-nwl.c
+++ b/drivers/pci/controller/pcie-xilinx-nwl.c
diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c
index b110a3a814e3..b110a3a814e3 100644
--- a/drivers/pci/host/pcie-xilinx.c
+++ b/drivers/pci/controller/pcie-xilinx.c
diff --git a/drivers/pci/host/vmd.c b/drivers/pci/controller/vmd.c
index 942b64fc7f1f..942b64fc7f1f 100644
--- a/drivers/pci/host/vmd.c
+++ b/drivers/pci/controller/vmd.c
diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig
index b12e28b3d8f9..0a1e9d379bc5 100644
--- a/drivers/pci/pcie/Kconfig
+++ b/drivers/pci/pcie/Kconfig
@@ -23,7 +23,42 @@ config HOTPLUG_PCI_PCIE
 
 	  When in doubt, say N.
 
-source "drivers/pci/pcie/aer/Kconfig"
+config PCIEAER
+	bool "PCI Express Advanced Error Reporting support"
+	depends on PCIEPORTBUS
+	select RAS
+	default y
+	help
+	  This enables PCI Express Root Port Advanced Error Reporting
+	  (AER) driver support. Error reporting messages sent to Root
+	  Port will be handled by PCI Express AER driver.
+
+config PCIEAER_INJECT
+	tristate "PCI Express error injection support"
+	depends on PCIEAER
+	default n
+	help
+	  This enables PCI Express Root Port Advanced Error Reporting
+	  (AER) software error injector.
+
+	  Debugging AER code is quite difficult because it is hard
+	  to trigger various real hardware errors. Software-based
+	  error injection can fake almost all kinds of errors with the
+	  help of a user space helper tool aer-inject, which can be
+	  gotten from:
+	     http://www.kernel.org/pub/linux/utils/pci/aer-inject/
+
+#
+# PCI Express ECRC
+#
+config PCIE_ECRC
+	bool "PCI Express ECRC settings control"
+	depends on PCIEAER
+	help
+	  Used to override firmware/bios settings for PCI Express ECRC
+	  (transaction layer end-to-end CRC checking).
+
+	  When in doubt, say N.
 
 #
 # PCI Express ASPM
@@ -92,7 +127,7 @@ config PCIE_PME
 	depends on PCIEPORTBUS && PM
 
 config PCIE_DPC
-	bool "PCIe Downstream Port Containment support"
+	bool "PCI Express Downstream Port Containment support"
 	depends on PCIEPORTBUS && PCIEAER
 	default n
 	help
@@ -103,7 +138,7 @@ config PCIE_DPC
 	  it is safe to answer N.
 
 config PCIE_PTM
-	bool "PCIe Precision Time Measurement support"
+	bool "PCI Express Precision Time Measurement support"
 	default n
 	depends on PCIEPORTBUS
 	help
diff --git a/drivers/pci/pcie/Makefile b/drivers/pci/pcie/Makefile
index 03f4e0b3a140..ab514083d5d4 100644
--- a/drivers/pci/pcie/Makefile
+++ b/drivers/pci/pcie/Makefile
@@ -7,7 +7,8 @@ pcieportdrv-y			:= portdrv_core.o portdrv_pci.o err.o
 obj-$(CONFIG_PCIEPORTBUS)	+= pcieportdrv.o
 
 obj-$(CONFIG_PCIEASPM)		+= aspm.o
-obj-$(CONFIG_PCIEAER)		+= aer/
+obj-$(CONFIG_PCIEAER)		+= aer.o
+obj-$(CONFIG_PCIEAER_INJECT)	+= aer_inject.o
 obj-$(CONFIG_PCIE_PME)		+= pme.o
 obj-$(CONFIG_PCIE_DPC)		+= dpc.o
 obj-$(CONFIG_PCIE_PTM)		+= ptm.o
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
new file mode 100644
index 000000000000..a2e88386af28
--- /dev/null
+++ b/drivers/pci/pcie/aer.c
@@ -0,0 +1,1377 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Implement the AER root port service driver. The driver registers an IRQ
+ * handler. When a root port triggers an AER interrupt, the IRQ handler
+ * collects root port status and schedules work.
+ *
+ * Copyright (C) 2006 Intel Corp.
+ *	Tom Long Nguyen (tom.l.nguyen@intel.com)
+ *	Zhang Yanmin (yanmin.zhang@intel.com)
+ *
+ * (C) Copyright 2009 Hewlett-Packard Development Company, L.P.
+ *    Andrew Patterson <andrew.patterson@hp.com>
+ */
+
+#include <linux/cper.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/pm.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/kfifo.h>
+#include <linux/slab.h>
+#include <acpi/apei.h>
+#include <ras/ras_event.h>
+
+#include "../pci.h"
+#include "portdrv.h"
+
+#define AER_ERROR_SOURCES_MAX		100
+#define AER_MAX_MULTI_ERR_DEVICES	5	/* Not likely to have more */
+
+struct aer_err_info {
+	struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
+	int error_dev_num;
+
+	unsigned int id:16;
+
+	unsigned int severity:2;	/* 0:NONFATAL | 1:FATAL | 2:COR */
+	unsigned int __pad1:5;
+	unsigned int multi_error_valid:1;
+
+	unsigned int first_error:5;
+	unsigned int __pad2:2;
+	unsigned int tlp_header_valid:1;
+
+	unsigned int status;		/* COR/UNCOR Error Status */
+	unsigned int mask;		/* COR/UNCOR Error Mask */
+	struct aer_header_log_regs tlp;	/* TLP Header */
+};
+
+struct aer_err_source {
+	unsigned int status;
+	unsigned int id;
+};
+
+struct aer_rpc {
+	struct pci_dev *rpd;		/* Root Port device */
+	struct work_struct dpc_handler;
+	struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
+	struct aer_err_info e_info;
+	unsigned short prod_idx;	/* Error Producer Index */
+	unsigned short cons_idx;	/* Error Consumer Index */
+	int isr;
+	spinlock_t e_lock;		/*
+					 * Lock access to Error Status/ID Regs
+					 * and error producer/consumer index
+					 */
+	struct mutex rpc_mutex;		/*
+					 * only one thread could do
+					 * recovery on the same
+					 * root port hierarchy
+					 */
+};
+
+#define AER_LOG_TLP_MASKS		(PCI_ERR_UNC_POISON_TLP|	\
+					PCI_ERR_UNC_ECRC|		\
+					PCI_ERR_UNC_UNSUP|		\
+					PCI_ERR_UNC_COMP_ABORT|		\
+					PCI_ERR_UNC_UNX_COMP|		\
+					PCI_ERR_UNC_MALF_TLP)
+
+#define SYSTEM_ERROR_INTR_ON_MESG_MASK	(PCI_EXP_RTCTL_SECEE|	\
+					PCI_EXP_RTCTL_SENFEE|	\
+					PCI_EXP_RTCTL_SEFEE)
+#define ROOT_PORT_INTR_ON_MESG_MASK	(PCI_ERR_ROOT_CMD_COR_EN|	\
+					PCI_ERR_ROOT_CMD_NONFATAL_EN|	\
+					PCI_ERR_ROOT_CMD_FATAL_EN)
+#define ERR_COR_ID(d)			(d & 0xffff)
+#define ERR_UNCOR_ID(d)			(d >> 16)
+
+static int pcie_aer_disable;
+
+void pci_no_aer(void)
+{
+	pcie_aer_disable = 1;
+}
+
+bool pci_aer_available(void)
+{
+	return !pcie_aer_disable && pci_msi_enabled();
+}
+
+#ifdef CONFIG_PCIE_ECRC
+
+#define ECRC_POLICY_DEFAULT 0		/* ECRC set by BIOS */
+#define ECRC_POLICY_OFF     1		/* ECRC off for performance */
+#define ECRC_POLICY_ON      2		/* ECRC on for data integrity */
+
+static int ecrc_policy = ECRC_POLICY_DEFAULT;
+
+static const char *ecrc_policy_str[] = {
+	[ECRC_POLICY_DEFAULT] = "bios",
+	[ECRC_POLICY_OFF] = "off",
+	[ECRC_POLICY_ON] = "on"
+};
+
+/**
+ * enable_ercr_checking - enable PCIe ECRC checking for a device
+ * @dev: the PCI device
+ *
+ * Returns 0 on success, or negative on failure.
+ */
+static int enable_ecrc_checking(struct pci_dev *dev)
+{
+	int pos;
+	u32 reg32;
+
+	if (!pci_is_pcie(dev))
+		return -ENODEV;
+
+	pos = dev->aer_cap;
+	if (!pos)
+		return -ENODEV;
+
+	pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
+	if (reg32 & PCI_ERR_CAP_ECRC_GENC)
+		reg32 |= PCI_ERR_CAP_ECRC_GENE;
+	if (reg32 & PCI_ERR_CAP_ECRC_CHKC)
+		reg32 |= PCI_ERR_CAP_ECRC_CHKE;
+	pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
+
+	return 0;
+}
+
+/**
+ * disable_ercr_checking - disables PCIe ECRC checking for a device
+ * @dev: the PCI device
+ *
+ * Returns 0 on success, or negative on failure.
+ */
+static int disable_ecrc_checking(struct pci_dev *dev)
+{
+	int pos;
+	u32 reg32;
+
+	if (!pci_is_pcie(dev))
+		return -ENODEV;
+
+	pos = dev->aer_cap;
+	if (!pos)
+		return -ENODEV;
+
+	pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
+	reg32 &= ~(PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE);
+	pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
+
+	return 0;
+}
+
+/**
+ * pcie_set_ecrc_checking - set/unset PCIe ECRC checking for a device based on global policy
+ * @dev: the PCI device
+ */
+void pcie_set_ecrc_checking(struct pci_dev *dev)
+{
+	switch (ecrc_policy) {
+	case ECRC_POLICY_DEFAULT:
+		return;
+	case ECRC_POLICY_OFF:
+		disable_ecrc_checking(dev);
+		break;
+	case ECRC_POLICY_ON:
+		enable_ecrc_checking(dev);
+		break;
+	default:
+		return;
+	}
+}
+
+/**
+ * pcie_ecrc_get_policy - parse kernel command-line ecrc option
+ */
+void pcie_ecrc_get_policy(char *str)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ecrc_policy_str); i++)
+		if (!strncmp(str, ecrc_policy_str[i],
+			     strlen(ecrc_policy_str[i])))
+			break;
+	if (i >= ARRAY_SIZE(ecrc_policy_str))
+		return;
+
+	ecrc_policy = i;
+}
+#endif	/* CONFIG_PCIE_ECRC */
+
+#ifdef CONFIG_ACPI_APEI
+static inline int hest_match_pci(struct acpi_hest_aer_common *p,
+				 struct pci_dev *pci)
+{
+	return   ACPI_HEST_SEGMENT(p->bus) == pci_domain_nr(pci->bus) &&
+		 ACPI_HEST_BUS(p->bus)     == pci->bus->number &&
+		 p->device                 == PCI_SLOT(pci->devfn) &&
+		 p->function               == PCI_FUNC(pci->devfn);
+}
+
+static inline bool hest_match_type(struct acpi_hest_header *hest_hdr,
+				struct pci_dev *dev)
+{
+	u16 hest_type = hest_hdr->type;
+	u8 pcie_type = pci_pcie_type(dev);
+
+	if ((hest_type == ACPI_HEST_TYPE_AER_ROOT_PORT &&
+		pcie_type == PCI_EXP_TYPE_ROOT_PORT) ||
+	    (hest_type == ACPI_HEST_TYPE_AER_ENDPOINT &&
+		pcie_type == PCI_EXP_TYPE_ENDPOINT) ||
+	    (hest_type == ACPI_HEST_TYPE_AER_BRIDGE &&
+		(dev->class >> 16) == PCI_BASE_CLASS_BRIDGE))
+		return true;
+	return false;
+}
+
+struct aer_hest_parse_info {
+	struct pci_dev *pci_dev;
+	int firmware_first;
+};
+
+static int hest_source_is_pcie_aer(struct acpi_hest_header *hest_hdr)
+{
+	if (hest_hdr->type == ACPI_HEST_TYPE_AER_ROOT_PORT ||
+	    hest_hdr->type == ACPI_HEST_TYPE_AER_ENDPOINT ||
+	    hest_hdr->type == ACPI_HEST_TYPE_AER_BRIDGE)
+		return 1;
+	return 0;
+}
+
+static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
+{
+	struct aer_hest_parse_info *info = data;
+	struct acpi_hest_aer_common *p;
+	int ff;
+
+	if (!hest_source_is_pcie_aer(hest_hdr))
+		return 0;
+
+	p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
+	ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
+
+	/*
+	 * If no specific device is supplied, determine whether
+	 * FIRMWARE_FIRST is set for *any* PCIe device.
+	 */
+	if (!info->pci_dev) {
+		info->firmware_first |= ff;
+		return 0;
+	}
+
+	/* Otherwise, check the specific device */
+	if (p->flags & ACPI_HEST_GLOBAL) {
+		if (hest_match_type(hest_hdr, info->pci_dev))
+			info->firmware_first = ff;
+	} else
+		if (hest_match_pci(p, info->pci_dev))
+			info->firmware_first = ff;
+
+	return 0;
+}
+
+static void aer_set_firmware_first(struct pci_dev *pci_dev)
+{
+	int rc;
+	struct aer_hest_parse_info info = {
+		.pci_dev	= pci_dev,
+		.firmware_first	= 0,
+	};
+
+	rc = apei_hest_parse(aer_hest_parse, &info);
+
+	if (rc)
+		pci_dev->__aer_firmware_first = 0;
+	else
+		pci_dev->__aer_firmware_first = info.firmware_first;
+	pci_dev->__aer_firmware_first_valid = 1;
+}
+
+int pcie_aer_get_firmware_first(struct pci_dev *dev)
+{
+	if (!pci_is_pcie(dev))
+		return 0;
+
+	if (!dev->__aer_firmware_first_valid)
+		aer_set_firmware_first(dev);
+	return dev->__aer_firmware_first;
+}
+#define	PCI_EXP_AER_FLAGS	(PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | \
+				 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE)
+
+static bool aer_firmware_first;
+
+/**
+ * aer_acpi_firmware_first - Check if APEI should control AER.
+ */
+bool aer_acpi_firmware_first(void)
+{
+	static bool parsed = false;
+	struct aer_hest_parse_info info = {
+		.pci_dev	= NULL,	/* Check all PCIe devices */
+		.firmware_first	= 0,
+	};
+
+	if (!parsed) {
+		apei_hest_parse(aer_hest_parse, &info);
+		aer_firmware_first = info.firmware_first;
+		parsed = true;
+	}
+	return aer_firmware_first;
+}
+#endif
+
+#define	PCI_EXP_AER_FLAGS	(PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | \
+				 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE)
+
+int pci_enable_pcie_error_reporting(struct pci_dev *dev)
+{
+	if (pcie_aer_get_firmware_first(dev))
+		return -EIO;
+
+	if (!dev->aer_cap)
+		return -EIO;
+
+	return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+}
+EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
+
+int pci_disable_pcie_error_reporting(struct pci_dev *dev)
+{
+	if (pcie_aer_get_firmware_first(dev))
+		return -EIO;
+
+	return pcie_capability_clear_word(dev, PCI_EXP_DEVCTL,
+					  PCI_EXP_AER_FLAGS);
+}
+EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
+
+int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
+{
+	int pos;
+	u32 status;
+
+	pos = dev->aer_cap;
+	if (!pos)
+		return -EIO;
+
+	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
+	if (status)
+		pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
+
+int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
+{
+	int pos;
+	u32 status;
+	int port_type;
+
+	if (!pci_is_pcie(dev))
+		return -ENODEV;
+
+	pos = dev->aer_cap;
+	if (!pos)
+		return -EIO;
+
+	port_type = pci_pcie_type(dev);
+	if (port_type == PCI_EXP_TYPE_ROOT_PORT) {
+		pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &status);
+		pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, status);
+	}
+
+	pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
+	pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, status);
+
+	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
+	pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
+
+	return 0;
+}
+
+int pci_aer_init(struct pci_dev *dev)
+{
+	dev->aer_cap = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
+	return pci_cleanup_aer_error_status_regs(dev);
+}
+
+#define AER_AGENT_RECEIVER		0
+#define AER_AGENT_REQUESTER		1
+#define AER_AGENT_COMPLETER		2
+#define AER_AGENT_TRANSMITTER		3
+
+#define AER_AGENT_REQUESTER_MASK(t)	((t == AER_CORRECTABLE) ?	\
+	0 : (PCI_ERR_UNC_COMP_TIME|PCI_ERR_UNC_UNSUP))
+#define AER_AGENT_COMPLETER_MASK(t)	((t == AER_CORRECTABLE) ?	\
+	0 : PCI_ERR_UNC_COMP_ABORT)
+#define AER_AGENT_TRANSMITTER_MASK(t)	((t == AER_CORRECTABLE) ?	\
+	(PCI_ERR_COR_REP_ROLL|PCI_ERR_COR_REP_TIMER) : 0)
+
+#define AER_GET_AGENT(t, e)						\
+	((e & AER_AGENT_COMPLETER_MASK(t)) ? AER_AGENT_COMPLETER :	\
+	(e & AER_AGENT_REQUESTER_MASK(t)) ? AER_AGENT_REQUESTER :	\
+	(e & AER_AGENT_TRANSMITTER_MASK(t)) ? AER_AGENT_TRANSMITTER :	\
+	AER_AGENT_RECEIVER)
+
+#define AER_PHYSICAL_LAYER_ERROR	0
+#define AER_DATA_LINK_LAYER_ERROR	1
+#define AER_TRANSACTION_LAYER_ERROR	2
+
+#define AER_PHYSICAL_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ?	\
+	PCI_ERR_COR_RCVR : 0)
+#define AER_DATA_LINK_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ?	\
+	(PCI_ERR_COR_BAD_TLP|						\
+	PCI_ERR_COR_BAD_DLLP|						\
+	PCI_ERR_COR_REP_ROLL|						\
+	PCI_ERR_COR_REP_TIMER) : PCI_ERR_UNC_DLP)
+
+#define AER_GET_LAYER_ERROR(t, e)					\
+	((e & AER_PHYSICAL_LAYER_ERROR_MASK(t)) ? AER_PHYSICAL_LAYER_ERROR : \
+	(e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
+	AER_TRANSACTION_LAYER_ERROR)
+
+/*
+ * AER error strings
+ */
+static const char *aer_error_severity_string[] = {
+	"Uncorrected (Non-Fatal)",
+	"Uncorrected (Fatal)",
+	"Corrected"
+};
+
+static const char *aer_error_layer[] = {
+	"Physical Layer",
+	"Data Link Layer",
+	"Transaction Layer"
+};
+
+static const char *aer_correctable_error_string[] = {
+	"Receiver Error",		/* Bit Position 0	*/
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	"Bad TLP",			/* Bit Position 6	*/
+	"Bad DLLP",			/* Bit Position 7	*/
+	"RELAY_NUM Rollover",		/* Bit Position 8	*/
+	NULL,
+	NULL,
+	NULL,
+	"Replay Timer Timeout",		/* Bit Position 12	*/
+	"Advisory Non-Fatal",		/* Bit Position 13	*/
+	"Corrected Internal Error",	/* Bit Position 14	*/
+	"Header Log Overflow",		/* Bit Position 15	*/
+};
+
+static const char *aer_uncorrectable_error_string[] = {
+	"Undefined",			/* Bit Position 0	*/
+	NULL,
+	NULL,
+	NULL,
+	"Data Link Protocol",		/* Bit Position 4	*/
+	"Surprise Down Error",		/* Bit Position 5	*/
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	"Poisoned TLP",			/* Bit Position 12	*/
+	"Flow Control Protocol",	/* Bit Position 13	*/
+	"Completion Timeout",		/* Bit Position 14	*/
+	"Completer Abort",		/* Bit Position 15	*/
+	"Unexpected Completion",	/* Bit Position 16	*/
+	"Receiver Overflow",		/* Bit Position 17	*/
+	"Malformed TLP",		/* Bit Position 18	*/
+	"ECRC",				/* Bit Position 19	*/
+	"Unsupported Request",		/* Bit Position 20	*/
+	"ACS Violation",		/* Bit Position 21	*/
+	"Uncorrectable Internal Error",	/* Bit Position 22	*/
+	"MC Blocked TLP",		/* Bit Position 23	*/
+	"AtomicOp Egress Blocked",	/* Bit Position 24	*/
+	"TLP Prefix Blocked Error",	/* Bit Position 25	*/
+};
+
+static const char *aer_agent_string[] = {
+	"Receiver ID",
+	"Requester ID",
+	"Completer ID",
+	"Transmitter ID"
+};
+
+static void __print_tlp_header(struct pci_dev *dev,
+			       struct aer_header_log_regs *t)
+{
+	pci_err(dev, "  TLP Header: %08x %08x %08x %08x\n",
+		t->dw0, t->dw1, t->dw2, t->dw3);
+}
+
+static void __aer_print_error(struct pci_dev *dev,
+			      struct aer_err_info *info)
+{
+	int i, status;
+	const char *errmsg = NULL;
+	status = (info->status & ~info->mask);
+
+	for (i = 0; i < 32; i++) {
+		if (!(status & (1 << i)))
+			continue;
+
+		if (info->severity == AER_CORRECTABLE)
+			errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ?
+				aer_correctable_error_string[i] : NULL;
+		else
+			errmsg = i < ARRAY_SIZE(aer_uncorrectable_error_string) ?
+				aer_uncorrectable_error_string[i] : NULL;
+
+		if (errmsg)
+			pci_err(dev, "   [%2d] %-22s%s\n", i, errmsg,
+				info->first_error == i ? " (First)" : "");
+		else
+			pci_err(dev, "   [%2d] Unknown Error Bit%s\n",
+				i, info->first_error == i ? " (First)" : "");
+	}
+}
+
+static void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
+{
+	int layer, agent;
+	int id = ((dev->bus->number << 8) | dev->devfn);
+
+	if (!info->status) {
+		pci_err(dev, "PCIe Bus Error: severity=%s, type=Inaccessible, (Unregistered Agent ID)\n",
+			aer_error_severity_string[info->severity]);
+		goto out;
+	}
+
+	layer = AER_GET_LAYER_ERROR(info->severity, info->status);
+	agent = AER_GET_AGENT(info->severity, info->status);
+
+	pci_err(dev, "PCIe Bus Error: severity=%s, type=%s, (%s)\n",
+		aer_error_severity_string[info->severity],
+		aer_error_layer[layer], aer_agent_string[agent]);
+
+	pci_err(dev, "  device [%04x:%04x] error status/mask=%08x/%08x\n",
+		dev->vendor, dev->device,
+		info->status, info->mask);
+
+	__aer_print_error(dev, info);
+
+	if (info->tlp_header_valid)
+		__print_tlp_header(dev, &info->tlp);
+
+out:
+	if (info->id && info->error_dev_num > 1 && info->id == id)
+		pci_err(dev, "  Error of this Agent is reported first\n");
+
+	trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask),
+			info->severity, info->tlp_header_valid, &info->tlp);
+}
+
+static void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info)
+{
+	u8 bus = info->id >> 8;
+	u8 devfn = info->id & 0xff;
+
+	pci_info(dev, "AER: %s%s error received: %04x:%02x:%02x.%d\n",
+		info->multi_error_valid ? "Multiple " : "",
+		aer_error_severity_string[info->severity],
+		pci_domain_nr(dev->bus), bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+}
+
+#ifdef CONFIG_ACPI_APEI_PCIEAER
+int cper_severity_to_aer(int cper_severity)
+{
+	switch (cper_severity) {
+	case CPER_SEV_RECOVERABLE:
+		return AER_NONFATAL;
+	case CPER_SEV_FATAL:
+		return AER_FATAL;
+	default:
+		return AER_CORRECTABLE;
+	}
+}
+EXPORT_SYMBOL_GPL(cper_severity_to_aer);
+
+void cper_print_aer(struct pci_dev *dev, int aer_severity,
+		    struct aer_capability_regs *aer)
+{
+	int layer, agent, tlp_header_valid = 0;
+	u32 status, mask;
+	struct aer_err_info info;
+
+	if (aer_severity == AER_CORRECTABLE) {
+		status = aer->cor_status;
+		mask = aer->cor_mask;
+	} else {
+		status = aer->uncor_status;
+		mask = aer->uncor_mask;
+		tlp_header_valid = status & AER_LOG_TLP_MASKS;
+	}
+
+	layer = AER_GET_LAYER_ERROR(aer_severity, status);
+	agent = AER_GET_AGENT(aer_severity, status);
+
+	memset(&info, 0, sizeof(info));
+	info.severity = aer_severity;
+	info.status = status;
+	info.mask = mask;
+	info.first_error = PCI_ERR_CAP_FEP(aer->cap_control);
+
+	pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
+	__aer_print_error(dev, &info);
+	pci_err(dev, "aer_layer=%s, aer_agent=%s\n",
+		aer_error_layer[layer], aer_agent_string[agent]);
+
+	if (aer_severity != AER_CORRECTABLE)
+		pci_err(dev, "aer_uncor_severity: 0x%08x\n",
+			aer->uncor_severity);
+
+	if (tlp_header_valid)
+		__print_tlp_header(dev, &aer->header_log);
+
+	trace_aer_event(dev_name(&dev->dev), (status & ~mask),
+			aer_severity, tlp_header_valid, &aer->header_log);
+}
+#endif
+
+/**
+ * add_error_device - list device to be handled
+ * @e_info: pointer to error info
+ * @dev: pointer to pci_dev to be added
+ */
+static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev)
+{
+	if (e_info->error_dev_num < AER_MAX_MULTI_ERR_DEVICES) {
+		e_info->dev[e_info->error_dev_num] = dev;
+		e_info->error_dev_num++;
+		return 0;
+	}
+	return -ENOSPC;
+}
+
+/**
+ * is_error_source - check whether the device is source of reported error
+ * @dev: pointer to pci_dev to be checked
+ * @e_info: pointer to reported error info
+ */
+static bool is_error_source(struct pci_dev *dev, struct aer_err_info *e_info)
+{
+	int pos;
+	u32 status, mask;
+	u16 reg16;
+
+	/*
+	 * When bus id is equal to 0, it might be a bad id
+	 * reported by root port.
+	 */
+	if ((PCI_BUS_NUM(e_info->id) != 0) &&
+	    !(dev->bus->bus_flags & PCI_BUS_FLAGS_NO_AERSID)) {
+		/* Device ID match? */
+		if (e_info->id == ((dev->bus->number << 8) | dev->devfn))
+			return true;
+
+		/* Continue id comparing if there is no multiple error */
+		if (!e_info->multi_error_valid)
+			return false;
+	}
+
+	/*
+	 * When either
+	 *      1) bus id is equal to 0. Some ports might lose the bus
+	 *              id of error source id;
+	 *      2) bus flag PCI_BUS_FLAGS_NO_AERSID is set
+	 *      3) There are multiple errors and prior ID comparing fails;
+	 * We check AER status registers to find possible reporter.
+	 */
+	if (atomic_read(&dev->enable_cnt) == 0)
+		return false;
+
+	/* Check if AER is enabled */
+	pcie_capability_read_word(dev, PCI_EXP_DEVCTL, &reg16);
+	if (!(reg16 & PCI_EXP_AER_FLAGS))
+		return false;
+
+	pos = dev->aer_cap;
+	if (!pos)
+		return false;
+
+	/* Check if error is recorded */
+	if (e_info->severity == AER_CORRECTABLE) {
+		pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
+		pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &mask);
+	} else {
+		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
+		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, &mask);
+	}
+	if (status & ~mask)
+		return true;
+
+	return false;
+}
+
+static int find_device_iter(struct pci_dev *dev, void *data)
+{
+	struct aer_err_info *e_info = (struct aer_err_info *)data;
+
+	if (is_error_source(dev, e_info)) {
+		/* List this device */
+		if (add_error_device(e_info, dev)) {
+			/* We cannot handle more... Stop iteration */
+			/* TODO: Should print error message here? */
+			return 1;
+		}
+
+		/* If there is only a single error, stop iteration */
+		if (!e_info->multi_error_valid)
+			return 1;
+	}
+	return 0;
+}
+
+/**
+ * find_source_device - search through device hierarchy for source device
+ * @parent: pointer to Root Port pci_dev data structure
+ * @e_info: including detailed error information such like id
+ *
+ * Return true if found.
+ *
+ * Invoked by DPC when error is detected at the Root Port.
+ * Caller of this function must set id, severity, and multi_error_valid of
+ * struct aer_err_info pointed by @e_info properly.  This function must fill
+ * e_info->error_dev_num and e_info->dev[], based on the given information.
+ */
+static bool find_source_device(struct pci_dev *parent,
+		struct aer_err_info *e_info)
+{
+	struct pci_dev *dev = parent;
+	int result;
+
+	/* Must reset in this function */
+	e_info->error_dev_num = 0;
+
+	/* Is Root Port an agent that sends error message? */
+	result = find_device_iter(dev, e_info);
+	if (result)
+		return true;
+
+	pci_walk_bus(parent->subordinate, find_device_iter, e_info);
+
+	if (!e_info->error_dev_num) {
+		pci_printk(KERN_DEBUG, parent, "can't find device of ID%04x\n",
+			   e_info->id);
+		return false;
+	}
+	return true;
+}
+
+/**
+ * handle_error_source - handle logging error into an event log
+ * @dev: pointer to pci_dev data structure of error source device
+ * @info: comprehensive error information
+ *
+ * Invoked when an error being detected by Root Port.
+ */
+static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info)
+{
+	int pos;
+
+	if (info->severity == AER_CORRECTABLE) {
+		/*
+		 * Correctable error does not need software intervention.
+		 * No need to go through error recovery process.
+		 */
+		pos = dev->aer_cap;
+		if (pos)
+			pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
+					info->status);
+	} else if (info->severity == AER_NONFATAL)
+		pcie_do_nonfatal_recovery(dev);
+	else if (info->severity == AER_FATAL)
+		pcie_do_fatal_recovery(dev, PCIE_PORT_SERVICE_AER);
+}
+
+#ifdef CONFIG_ACPI_APEI_PCIEAER
+
+#define AER_RECOVER_RING_ORDER		4
+#define AER_RECOVER_RING_SIZE		(1 << AER_RECOVER_RING_ORDER)
+
+struct aer_recover_entry {
+	u8	bus;
+	u8	devfn;
+	u16	domain;
+	int	severity;
+	struct aer_capability_regs *regs;
+};
+
+static DEFINE_KFIFO(aer_recover_ring, struct aer_recover_entry,
+		    AER_RECOVER_RING_SIZE);
+
+static void aer_recover_work_func(struct work_struct *work)
+{
+	struct aer_recover_entry entry;
+	struct pci_dev *pdev;
+
+	while (kfifo_get(&aer_recover_ring, &entry)) {
+		pdev = pci_get_domain_bus_and_slot(entry.domain, entry.bus,
+						   entry.devfn);
+		if (!pdev) {
+			pr_err("AER recover: Can not find pci_dev for %04x:%02x:%02x:%x\n",
+			       entry.domain, entry.bus,
+			       PCI_SLOT(entry.devfn), PCI_FUNC(entry.devfn));
+			continue;
+		}
+		cper_print_aer(pdev, entry.severity, entry.regs);
+		if (entry.severity == AER_NONFATAL)
+			pcie_do_nonfatal_recovery(pdev);
+		else if (entry.severity == AER_FATAL)
+			pcie_do_fatal_recovery(pdev, PCIE_PORT_SERVICE_AER);
+		pci_dev_put(pdev);
+	}
+}
+
+/*
+ * Mutual exclusion for writers of aer_recover_ring, reader side don't
+ * need lock, because there is only one reader and lock is not needed
+ * between reader and writer.
+ */
+static DEFINE_SPINLOCK(aer_recover_ring_lock);
+static DECLARE_WORK(aer_recover_work, aer_recover_work_func);
+
+void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
+		       int severity, struct aer_capability_regs *aer_regs)
+{
+	unsigned long flags;
+	struct aer_recover_entry entry = {
+		.bus		= bus,
+		.devfn		= devfn,
+		.domain		= domain,
+		.severity	= severity,
+		.regs		= aer_regs,
+	};
+
+	spin_lock_irqsave(&aer_recover_ring_lock, flags);
+	if (kfifo_put(&aer_recover_ring, entry))
+		schedule_work(&aer_recover_work);
+	else
+		pr_err("AER recover: Buffer overflow when recovering AER for %04x:%02x:%02x:%x\n",
+		       domain, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+	spin_unlock_irqrestore(&aer_recover_ring_lock, flags);
+}
+EXPORT_SYMBOL_GPL(aer_recover_queue);
+#endif
+
+/**
+ * get_device_error_info - read error status from dev and store it to info
+ * @dev: pointer to the device expected to have a error record
+ * @info: pointer to structure to store the error record
+ *
+ * Return 1 on success, 0 on error.
+ *
+ * Note that @info is reused among all error devices. Clear fields properly.
+ */
+static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
+{
+	int pos, temp;
+
+	/* Must reset in this function */
+	info->status = 0;
+	info->tlp_header_valid = 0;
+
+	pos = dev->aer_cap;
+
+	/* The device might not support AER */
+	if (!pos)
+		return 0;
+
+	if (info->severity == AER_CORRECTABLE) {
+		pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS,
+			&info->status);
+		pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK,
+			&info->mask);
+		if (!(info->status & ~info->mask))
+			return 0;
+	} else if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+		info->severity == AER_NONFATAL) {
+
+		/* Link is still healthy for IO reads */
+		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS,
+			&info->status);
+		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK,
+			&info->mask);
+		if (!(info->status & ~info->mask))
+			return 0;
+
+		/* Get First Error Pointer */
+		pci_read_config_dword(dev, pos + PCI_ERR_CAP, &temp);
+		info->first_error = PCI_ERR_CAP_FEP(temp);
+
+		if (info->status & AER_LOG_TLP_MASKS) {
+			info->tlp_header_valid = 1;
+			pci_read_config_dword(dev,
+				pos + PCI_ERR_HEADER_LOG, &info->tlp.dw0);
+			pci_read_config_dword(dev,
+				pos + PCI_ERR_HEADER_LOG + 4, &info->tlp.dw1);
+			pci_read_config_dword(dev,
+				pos + PCI_ERR_HEADER_LOG + 8, &info->tlp.dw2);
+			pci_read_config_dword(dev,
+				pos + PCI_ERR_HEADER_LOG + 12, &info->tlp.dw3);
+		}
+	}
+
+	return 1;
+}
+
+static inline void aer_process_err_devices(struct aer_err_info *e_info)
+{
+	int i;
+
+	/* Report all before handle them, not to lost records by reset etc. */
+	for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
+		if (get_device_error_info(e_info->dev[i], e_info))
+			aer_print_error(e_info->dev[i], e_info);
+	}
+	for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
+		if (get_device_error_info(e_info->dev[i], e_info))
+			handle_error_source(e_info->dev[i], e_info);
+	}
+}
+
+/**
+ * aer_isr_one_error - consume an error detected by root port
+ * @rpc: pointer to the root port which holds an error
+ * @e_src: pointer to an error source
+ */
+static void aer_isr_one_error(struct aer_rpc *rpc,
+		struct aer_err_source *e_src)
+{
+	struct pci_dev *pdev = rpc->rpd;
+	struct aer_err_info *e_info = &rpc->e_info;
+
+	/*
+	 * There is a possibility that both correctable error and
+	 * uncorrectable error being logged. Report correctable error first.
+	 */
+	if (e_src->status & PCI_ERR_ROOT_COR_RCV) {
+		e_info->id = ERR_COR_ID(e_src->id);
+		e_info->severity = AER_CORRECTABLE;
+
+		if (e_src->status & PCI_ERR_ROOT_MULTI_COR_RCV)
+			e_info->multi_error_valid = 1;
+		else
+			e_info->multi_error_valid = 0;
+		aer_print_port_info(pdev, e_info);
+
+		if (find_source_device(pdev, e_info))
+			aer_process_err_devices(e_info);
+	}
+
+	if (e_src->status & PCI_ERR_ROOT_UNCOR_RCV) {
+		e_info->id = ERR_UNCOR_ID(e_src->id);
+
+		if (e_src->status & PCI_ERR_ROOT_FATAL_RCV)
+			e_info->severity = AER_FATAL;
+		else
+			e_info->severity = AER_NONFATAL;
+
+		if (e_src->status & PCI_ERR_ROOT_MULTI_UNCOR_RCV)
+			e_info->multi_error_valid = 1;
+		else
+			e_info->multi_error_valid = 0;
+
+		aer_print_port_info(pdev, e_info);
+
+		if (find_source_device(pdev, e_info))
+			aer_process_err_devices(e_info);
+	}
+}
+
+/**
+ * get_e_source - retrieve an error source
+ * @rpc: pointer to the root port which holds an error
+ * @e_src: pointer to store retrieved error source
+ *
+ * Return 1 if an error source is retrieved, otherwise 0.
+ *
+ * Invoked by DPC handler to consume an error.
+ */
+static int get_e_source(struct aer_rpc *rpc, struct aer_err_source *e_src)
+{
+	unsigned long flags;
+
+	/* Lock access to Root error producer/consumer index */
+	spin_lock_irqsave(&rpc->e_lock, flags);
+	if (rpc->prod_idx == rpc->cons_idx) {
+		spin_unlock_irqrestore(&rpc->e_lock, flags);
+		return 0;
+	}
+
+	*e_src = rpc->e_sources[rpc->cons_idx];
+	rpc->cons_idx++;
+	if (rpc->cons_idx == AER_ERROR_SOURCES_MAX)
+		rpc->cons_idx = 0;
+	spin_unlock_irqrestore(&rpc->e_lock, flags);
+
+	return 1;
+}
+
+/**
+ * aer_isr - consume errors detected by root port
+ * @work: definition of this work item
+ *
+ * Invoked, as DPC, when root port records new detected error
+ */
+static void aer_isr(struct work_struct *work)
+{
+	struct aer_rpc *rpc = container_of(work, struct aer_rpc, dpc_handler);
+	struct aer_err_source uninitialized_var(e_src);
+
+	mutex_lock(&rpc->rpc_mutex);
+	while (get_e_source(rpc, &e_src))
+		aer_isr_one_error(rpc, &e_src);
+	mutex_unlock(&rpc->rpc_mutex);
+}
+
+/**
+ * aer_irq - Root Port's ISR
+ * @irq: IRQ assigned to Root Port
+ * @context: pointer to Root Port data structure
+ *
+ * Invoked when Root Port detects AER messages.
+ */
+irqreturn_t aer_irq(int irq, void *context)
+{
+	unsigned int status, id;
+	struct pcie_device *pdev = (struct pcie_device *)context;
+	struct aer_rpc *rpc = get_service_data(pdev);
+	int next_prod_idx;
+	unsigned long flags;
+	int pos;
+
+	pos = pdev->port->aer_cap;
+	/*
+	 * Must lock access to Root Error Status Reg, Root Error ID Reg,
+	 * and Root error producer/consumer index
+	 */
+	spin_lock_irqsave(&rpc->e_lock, flags);
+
+	/* Read error status */
+	pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, &status);
+	if (!(status & (PCI_ERR_ROOT_UNCOR_RCV|PCI_ERR_ROOT_COR_RCV))) {
+		spin_unlock_irqrestore(&rpc->e_lock, flags);
+		return IRQ_NONE;
+	}
+
+	/* Read error source and clear error status */
+	pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_ERR_SRC, &id);
+	pci_write_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, status);
+
+	/* Store error source for later DPC handler */
+	next_prod_idx = rpc->prod_idx + 1;
+	if (next_prod_idx == AER_ERROR_SOURCES_MAX)
+		next_prod_idx = 0;
+	if (next_prod_idx == rpc->cons_idx) {
+		/*
+		 * Error Storm Condition - possibly the same error occurred.
+		 * Drop the error.
+		 */
+		spin_unlock_irqrestore(&rpc->e_lock, flags);
+		return IRQ_HANDLED;
+	}
+	rpc->e_sources[rpc->prod_idx].status =  status;
+	rpc->e_sources[rpc->prod_idx].id = id;
+	rpc->prod_idx = next_prod_idx;
+	spin_unlock_irqrestore(&rpc->e_lock, flags);
+
+	/*  Invoke DPC handler */
+	schedule_work(&rpc->dpc_handler);
+
+	return IRQ_HANDLED;
+}
+EXPORT_SYMBOL_GPL(aer_irq);
+
+static int set_device_error_reporting(struct pci_dev *dev, void *data)
+{
+	bool enable = *((bool *)data);
+	int type = pci_pcie_type(dev);
+
+	if ((type == PCI_EXP_TYPE_ROOT_PORT) ||
+	    (type == PCI_EXP_TYPE_UPSTREAM) ||
+	    (type == PCI_EXP_TYPE_DOWNSTREAM)) {
+		if (enable)
+			pci_enable_pcie_error_reporting(dev);
+		else
+			pci_disable_pcie_error_reporting(dev);
+	}
+
+	if (enable)
+		pcie_set_ecrc_checking(dev);
+
+	return 0;
+}
+
+/**
+ * set_downstream_devices_error_reporting - enable/disable the error reporting  bits on the root port and its downstream ports.
+ * @dev: pointer to root port's pci_dev data structure
+ * @enable: true = enable error reporting, false = disable error reporting.
+ */
+static void set_downstream_devices_error_reporting(struct pci_dev *dev,
+						   bool enable)
+{
+	set_device_error_reporting(dev, &enable);
+
+	if (!dev->subordinate)
+		return;
+	pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable);
+}
+
+/**
+ * aer_enable_rootport - enable Root Port's interrupts when receiving messages
+ * @rpc: pointer to a Root Port data structure
+ *
+ * Invoked when PCIe bus loads AER service driver.
+ */
+static void aer_enable_rootport(struct aer_rpc *rpc)
+{
+	struct pci_dev *pdev = rpc->rpd;
+	int aer_pos;
+	u16 reg16;
+	u32 reg32;
+
+	/* Clear PCIe Capability's Device Status */
+	pcie_capability_read_word(pdev, PCI_EXP_DEVSTA, &reg16);
+	pcie_capability_write_word(pdev, PCI_EXP_DEVSTA, reg16);
+
+	/* Disable system error generation in response to error messages */
+	pcie_capability_clear_word(pdev, PCI_EXP_RTCTL,
+				   SYSTEM_ERROR_INTR_ON_MESG_MASK);
+
+	aer_pos = pdev->aer_cap;
+	/* Clear error status */
+	pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, &reg32);
+	pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32);
+	pci_read_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, &reg32);
+	pci_write_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, reg32);
+	pci_read_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, &reg32);
+	pci_write_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, reg32);
+
+	/*
+	 * Enable error reporting for the root port device and downstream port
+	 * devices.
+	 */
+	set_downstream_devices_error_reporting(pdev, true);
+
+	/* Enable Root Port's interrupt in response to error messages */
+	pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, reg32);
+}
+
+/**
+ * aer_disable_rootport - disable Root Port's interrupts when receiving messages
+ * @rpc: pointer to a Root Port data structure
+ *
+ * Invoked when PCIe bus unloads AER service driver.
+ */
+static void aer_disable_rootport(struct aer_rpc *rpc)
+{
+	struct pci_dev *pdev = rpc->rpd;
+	u32 reg32;
+	int pos;
+
+	/*
+	 * Disable error reporting for the root port device and downstream port
+	 * devices.
+	 */
+	set_downstream_devices_error_reporting(pdev, false);
+
+	pos = pdev->aer_cap;
+	/* Disable Root's interrupt in response to error messages */
+	pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, reg32);
+
+	/* Clear Root's error status reg */
+	pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, &reg32);
+	pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, reg32);
+}
+
+/**
+ * aer_alloc_rpc - allocate Root Port data structure
+ * @dev: pointer to the pcie_dev data structure
+ *
+ * Invoked when Root Port's AER service is loaded.
+ */
+static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
+{
+	struct aer_rpc *rpc;
+
+	rpc = kzalloc(sizeof(struct aer_rpc), GFP_KERNEL);
+	if (!rpc)
+		return NULL;
+
+	/* Initialize Root lock access, e_lock, to Root Error Status Reg */
+	spin_lock_init(&rpc->e_lock);
+
+	rpc->rpd = dev->port;
+	INIT_WORK(&rpc->dpc_handler, aer_isr);
+	mutex_init(&rpc->rpc_mutex);
+
+	/* Use PCIe bus function to store rpc into PCIe device */
+	set_service_data(dev, rpc);
+
+	return rpc;
+}
+
+/**
+ * aer_remove - clean up resources
+ * @dev: pointer to the pcie_dev data structure
+ *
+ * Invoked when PCI Express bus unloads or AER probe fails.
+ */
+static void aer_remove(struct pcie_device *dev)
+{
+	struct aer_rpc *rpc = get_service_data(dev);
+
+	if (rpc) {
+		/* If register interrupt service, it must be free. */
+		if (rpc->isr)
+			free_irq(dev->irq, dev);
+
+		flush_work(&rpc->dpc_handler);
+		aer_disable_rootport(rpc);
+		kfree(rpc);
+		set_service_data(dev, NULL);
+	}
+}
+
+/**
+ * aer_probe - initialize resources
+ * @dev: pointer to the pcie_dev data structure
+ *
+ * Invoked when PCI Express bus loads AER service driver.
+ */
+static int aer_probe(struct pcie_device *dev)
+{
+	int status;
+	struct aer_rpc *rpc;
+	struct device *device = &dev->port->dev;
+
+	/* Alloc rpc data structure */
+	rpc = aer_alloc_rpc(dev);
+	if (!rpc) {
+		dev_printk(KERN_DEBUG, device, "alloc AER rpc failed\n");
+		aer_remove(dev);
+		return -ENOMEM;
+	}
+
+	/* Request IRQ ISR */
+	status = request_irq(dev->irq, aer_irq, IRQF_SHARED, "aerdrv", dev);
+	if (status) {
+		dev_printk(KERN_DEBUG, device, "request AER IRQ %d failed\n",
+			   dev->irq);
+		aer_remove(dev);
+		return status;
+	}
+
+	rpc->isr = 1;
+
+	aer_enable_rootport(rpc);
+	dev_info(device, "AER enabled with IRQ %d\n", dev->irq);
+	return 0;
+}
+
+/**
+ * aer_root_reset - reset link on Root Port
+ * @dev: pointer to Root Port's pci_dev data structure
+ *
+ * Invoked by Port Bus driver when performing link reset at Root Port.
+ */
+static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
+{
+	u32 reg32;
+	int pos;
+
+	pos = dev->aer_cap;
+
+	/* Disable Root's interrupt in response to error messages */
+	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
+
+	pci_reset_bridge_secondary_bus(dev);
+	pci_printk(KERN_DEBUG, dev, "Root Port link has been reset\n");
+
+	/* Clear Root Error Status */
+	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &reg32);
+	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, reg32);
+
+	/* Enable Root Port's interrupt in response to error messages */
+	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * aer_error_resume - clean up corresponding error status bits
+ * @dev: pointer to Root Port's pci_dev data structure
+ *
+ * Invoked by Port Bus driver during nonfatal recovery.
+ */
+static void aer_error_resume(struct pci_dev *dev)
+{
+	int pos;
+	u32 status, mask;
+	u16 reg16;
+
+	/* Clean up Root device status */
+	pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &reg16);
+	pcie_capability_write_word(dev, PCI_EXP_DEVSTA, reg16);
+
+	/* Clean AER Root Error Status */
+	pos = dev->aer_cap;
+	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
+	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
+	status &= ~mask; /* Clear corresponding nonfatal bits */
+	pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
+}
+
+static struct pcie_port_service_driver aerdriver = {
+	.name		= "aer",
+	.port_type	= PCI_EXP_TYPE_ROOT_PORT,
+	.service	= PCIE_PORT_SERVICE_AER,
+
+	.probe		= aer_probe,
+	.remove		= aer_remove,
+	.error_resume	= aer_error_resume,
+	.reset_link	= aer_root_reset,
+};
+
+/**
+ * aer_service_init - register AER root service driver
+ *
+ * Invoked when AER root service driver is loaded.
+ */
+static int __init aer_service_init(void)
+{
+	if (!pci_aer_available() || aer_acpi_firmware_first())
+		return -ENXIO;
+	return pcie_port_service_register(&aerdriver);
+}
+device_initcall(aer_service_init);
diff --git a/drivers/pci/pcie/aer/Kconfig b/drivers/pci/pcie/aer/Kconfig
deleted file mode 100644
index 5a64eb3d6c7a..000000000000
--- a/drivers/pci/pcie/aer/Kconfig
+++ /dev/null
@@ -1,29 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# PCI Express Root Port Device AER Configuration
-#
-
-config PCIEAER
-	bool "Root Port Advanced Error Reporting support"
-	depends on PCIEPORTBUS
-	select RAS
-	default y
-	help
-	  This enables PCI Express Root Port Advanced Error Reporting
-	  (AER) driver support. Error reporting messages sent to Root
-	  Port will be handled by PCI Express AER driver.
-
-
-#
-# PCI Express ECRC
-#
-config PCIE_ECRC
-	bool "PCI Express ECRC settings control"
-	depends on PCIEAER
-	help
-	  Used to override firmware/bios settings for PCI Express ECRC
-	  (transaction layer end-to-end CRC checking).
-
-	  When in doubt, say N.
-
-source "drivers/pci/pcie/aer/Kconfig.debug"
diff --git a/drivers/pci/pcie/aer/Kconfig.debug b/drivers/pci/pcie/aer/Kconfig.debug
deleted file mode 100644
index 67e02174b65b..000000000000
--- a/drivers/pci/pcie/aer/Kconfig.debug
+++ /dev/null
@@ -1,19 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# PCI Express Root Port Device AER Debug Configuration
-#
-
-config PCIEAER_INJECT
-	tristate "PCIe AER error injector support"
-	depends on PCIEAER
-	default n
-	help
-	  This enables PCI Express Root Port Advanced Error Reporting
-	  (AER) software error injector.
-
-	  Debugging PCIe AER code is quite difficult because it is hard
-	  to trigger various real hardware errors. Software based
-	  error injection can fake almost all kinds of errors with the
-	  help of a user space helper tool aer-inject, which can be
-	  gotten from:
-	     http://www.kernel.org/pub/linux/utils/pci/aer-inject/
diff --git a/drivers/pci/pcie/aer/Makefile b/drivers/pci/pcie/aer/Makefile
deleted file mode 100644
index 09bd890875a3..000000000000
--- a/drivers/pci/pcie/aer/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for PCI-Express Root Port Advanced Error Reporting Driver
-#
-
-obj-$(CONFIG_PCIEAER) += aerdriver.o
-
-obj-$(CONFIG_PCIE_ECRC)	+= ecrc.o
-
-aerdriver-objs := aerdrv_errprint.o aerdrv_core.o aerdrv.o
-aerdriver-$(CONFIG_ACPI) += aerdrv_acpi.o
-
-obj-$(CONFIG_PCIEAER_INJECT) += aer_inject.o
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
deleted file mode 100644
index 9735c19bf39c..000000000000
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ /dev/null
@@ -1,371 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Implement the AER root port service driver. The driver registers an IRQ
- * handler. When a root port triggers an AER interrupt, the IRQ handler
- * collects root port status and schedules work.
- *
- * Copyright (C) 2006 Intel Corp.
- *	Tom Long Nguyen (tom.l.nguyen@intel.com)
- *	Zhang Yanmin (yanmin.zhang@intel.com)
- */
-
-#include <linux/pci.h>
-#include <linux/pci-acpi.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/pm.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-
-#include "aerdrv.h"
-#include "../../pci.h"
-
-static int aer_probe(struct pcie_device *dev);
-static void aer_remove(struct pcie_device *dev);
-static void aer_error_resume(struct pci_dev *dev);
-static pci_ers_result_t aer_root_reset(struct pci_dev *dev);
-
-static struct pcie_port_service_driver aerdriver = {
-	.name		= "aer",
-	.port_type	= PCI_EXP_TYPE_ROOT_PORT,
-	.service	= PCIE_PORT_SERVICE_AER,
-
-	.probe		= aer_probe,
-	.remove		= aer_remove,
-	.error_resume	= aer_error_resume,
-	.reset_link	= aer_root_reset,
-};
-
-static int pcie_aer_disable;
-
-void pci_no_aer(void)
-{
-	pcie_aer_disable = 1;
-}
-
-bool pci_aer_available(void)
-{
-	return !pcie_aer_disable && pci_msi_enabled();
-}
-
-static int set_device_error_reporting(struct pci_dev *dev, void *data)
-{
-	bool enable = *((bool *)data);
-	int type = pci_pcie_type(dev);
-
-	if ((type == PCI_EXP_TYPE_ROOT_PORT) ||
-	    (type == PCI_EXP_TYPE_UPSTREAM) ||
-	    (type == PCI_EXP_TYPE_DOWNSTREAM)) {
-		if (enable)
-			pci_enable_pcie_error_reporting(dev);
-		else
-			pci_disable_pcie_error_reporting(dev);
-	}
-
-	if (enable)
-		pcie_set_ecrc_checking(dev);
-
-	return 0;
-}
-
-/**
- * set_downstream_devices_error_reporting - enable/disable the error reporting  bits on the root port and its downstream ports.
- * @dev: pointer to root port's pci_dev data structure
- * @enable: true = enable error reporting, false = disable error reporting.
- */
-static void set_downstream_devices_error_reporting(struct pci_dev *dev,
-						   bool enable)
-{
-	set_device_error_reporting(dev, &enable);
-
-	if (!dev->subordinate)
-		return;
-	pci_walk_bus(dev->subordinate, set_device_error_reporting, &enable);
-}
-
-/**
- * aer_enable_rootport - enable Root Port's interrupts when receiving messages
- * @rpc: pointer to a Root Port data structure
- *
- * Invoked when PCIe bus loads AER service driver.
- */
-static void aer_enable_rootport(struct aer_rpc *rpc)
-{
-	struct pci_dev *pdev = rpc->rpd;
-	int aer_pos;
-	u16 reg16;
-	u32 reg32;
-
-	/* Clear PCIe Capability's Device Status */
-	pcie_capability_read_word(pdev, PCI_EXP_DEVSTA, &reg16);
-	pcie_capability_write_word(pdev, PCI_EXP_DEVSTA, reg16);
-
-	/* Disable system error generation in response to error messages */
-	pcie_capability_clear_word(pdev, PCI_EXP_RTCTL,
-				   SYSTEM_ERROR_INTR_ON_MESG_MASK);
-
-	aer_pos = pdev->aer_cap;
-	/* Clear error status */
-	pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_STATUS, reg32);
-	pci_read_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer_pos + PCI_ERR_COR_STATUS, reg32);
-	pci_read_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, &reg32);
-	pci_write_config_dword(pdev, aer_pos + PCI_ERR_UNCOR_STATUS, reg32);
-
-	/*
-	 * Enable error reporting for the root port device and downstream port
-	 * devices.
-	 */
-	set_downstream_devices_error_reporting(pdev, true);
-
-	/* Enable Root Port's interrupt in response to error messages */
-	pci_read_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(pdev, aer_pos + PCI_ERR_ROOT_COMMAND, reg32);
-}
-
-/**
- * aer_disable_rootport - disable Root Port's interrupts when receiving messages
- * @rpc: pointer to a Root Port data structure
- *
- * Invoked when PCIe bus unloads AER service driver.
- */
-static void aer_disable_rootport(struct aer_rpc *rpc)
-{
-	struct pci_dev *pdev = rpc->rpd;
-	u32 reg32;
-	int pos;
-
-	/*
-	 * Disable error reporting for the root port device and downstream port
-	 * devices.
-	 */
-	set_downstream_devices_error_reporting(pdev, false);
-
-	pos = pdev->aer_cap;
-	/* Disable Root's interrupt in response to error messages */
-	pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_COMMAND, reg32);
-
-	/* Clear Root's error status reg */
-	pci_read_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, &reg32);
-	pci_write_config_dword(pdev, pos + PCI_ERR_ROOT_STATUS, reg32);
-}
-
-/**
- * aer_irq - Root Port's ISR
- * @irq: IRQ assigned to Root Port
- * @context: pointer to Root Port data structure
- *
- * Invoked when Root Port detects AER messages.
- */
-irqreturn_t aer_irq(int irq, void *context)
-{
-	unsigned int status, id;
-	struct pcie_device *pdev = (struct pcie_device *)context;
-	struct aer_rpc *rpc = get_service_data(pdev);
-	int next_prod_idx;
-	unsigned long flags;
-	int pos;
-
-	pos = pdev->port->aer_cap;
-	/*
-	 * Must lock access to Root Error Status Reg, Root Error ID Reg,
-	 * and Root error producer/consumer index
-	 */
-	spin_lock_irqsave(&rpc->e_lock, flags);
-
-	/* Read error status */
-	pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, &status);
-	if (!(status & (PCI_ERR_ROOT_UNCOR_RCV|PCI_ERR_ROOT_COR_RCV))) {
-		spin_unlock_irqrestore(&rpc->e_lock, flags);
-		return IRQ_NONE;
-	}
-
-	/* Read error source and clear error status */
-	pci_read_config_dword(pdev->port, pos + PCI_ERR_ROOT_ERR_SRC, &id);
-	pci_write_config_dword(pdev->port, pos + PCI_ERR_ROOT_STATUS, status);
-
-	/* Store error source for later DPC handler */
-	next_prod_idx = rpc->prod_idx + 1;
-	if (next_prod_idx == AER_ERROR_SOURCES_MAX)
-		next_prod_idx = 0;
-	if (next_prod_idx == rpc->cons_idx) {
-		/*
-		 * Error Storm Condition - possibly the same error occurred.
-		 * Drop the error.
-		 */
-		spin_unlock_irqrestore(&rpc->e_lock, flags);
-		return IRQ_HANDLED;
-	}
-	rpc->e_sources[rpc->prod_idx].status =  status;
-	rpc->e_sources[rpc->prod_idx].id = id;
-	rpc->prod_idx = next_prod_idx;
-	spin_unlock_irqrestore(&rpc->e_lock, flags);
-
-	/*  Invoke DPC handler */
-	schedule_work(&rpc->dpc_handler);
-
-	return IRQ_HANDLED;
-}
-EXPORT_SYMBOL_GPL(aer_irq);
-
-/**
- * aer_alloc_rpc - allocate Root Port data structure
- * @dev: pointer to the pcie_dev data structure
- *
- * Invoked when Root Port's AER service is loaded.
- */
-static struct aer_rpc *aer_alloc_rpc(struct pcie_device *dev)
-{
-	struct aer_rpc *rpc;
-
-	rpc = kzalloc(sizeof(struct aer_rpc), GFP_KERNEL);
-	if (!rpc)
-		return NULL;
-
-	/* Initialize Root lock access, e_lock, to Root Error Status Reg */
-	spin_lock_init(&rpc->e_lock);
-
-	rpc->rpd = dev->port;
-	INIT_WORK(&rpc->dpc_handler, aer_isr);
-	mutex_init(&rpc->rpc_mutex);
-
-	/* Use PCIe bus function to store rpc into PCIe device */
-	set_service_data(dev, rpc);
-
-	return rpc;
-}
-
-/**
- * aer_remove - clean up resources
- * @dev: pointer to the pcie_dev data structure
- *
- * Invoked when PCI Express bus unloads or AER probe fails.
- */
-static void aer_remove(struct pcie_device *dev)
-{
-	struct aer_rpc *rpc = get_service_data(dev);
-
-	if (rpc) {
-		/* If register interrupt service, it must be free. */
-		if (rpc->isr)
-			free_irq(dev->irq, dev);
-
-		flush_work(&rpc->dpc_handler);
-		aer_disable_rootport(rpc);
-		kfree(rpc);
-		set_service_data(dev, NULL);
-	}
-}
-
-/**
- * aer_probe - initialize resources
- * @dev: pointer to the pcie_dev data structure
- *
- * Invoked when PCI Express bus loads AER service driver.
- */
-static int aer_probe(struct pcie_device *dev)
-{
-	int status;
-	struct aer_rpc *rpc;
-	struct device *device = &dev->port->dev;
-
-	/* Alloc rpc data structure */
-	rpc = aer_alloc_rpc(dev);
-	if (!rpc) {
-		dev_printk(KERN_DEBUG, device, "alloc AER rpc failed\n");
-		aer_remove(dev);
-		return -ENOMEM;
-	}
-
-	/* Request IRQ ISR */
-	status = request_irq(dev->irq, aer_irq, IRQF_SHARED, "aerdrv", dev);
-	if (status) {
-		dev_printk(KERN_DEBUG, device, "request AER IRQ %d failed\n",
-			   dev->irq);
-		aer_remove(dev);
-		return status;
-	}
-
-	rpc->isr = 1;
-
-	aer_enable_rootport(rpc);
-	dev_info(device, "AER enabled with IRQ %d\n", dev->irq);
-	return 0;
-}
-
-/**
- * aer_root_reset - reset link on Root Port
- * @dev: pointer to Root Port's pci_dev data structure
- *
- * Invoked by Port Bus driver when performing link reset at Root Port.
- */
-static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
-{
-	u32 reg32;
-	int pos;
-
-	pos = dev->aer_cap;
-
-	/* Disable Root's interrupt in response to error messages */
-	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
-
-	pci_reset_bridge_secondary_bus(dev);
-	pci_printk(KERN_DEBUG, dev, "Root Port link has been reset\n");
-
-	/* Clear Root Error Status */
-	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &reg32);
-	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, reg32);
-
-	/* Enable Root Port's interrupt in response to error messages */
-	pci_read_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32);
-
-	return PCI_ERS_RESULT_RECOVERED;
-}
-
-/**
- * aer_error_resume - clean up corresponding error status bits
- * @dev: pointer to Root Port's pci_dev data structure
- *
- * Invoked by Port Bus driver during nonfatal recovery.
- */
-static void aer_error_resume(struct pci_dev *dev)
-{
-	int pos;
-	u32 status, mask;
-	u16 reg16;
-
-	/* Clean up Root device status */
-	pcie_capability_read_word(dev, PCI_EXP_DEVSTA, &reg16);
-	pcie_capability_write_word(dev, PCI_EXP_DEVSTA, reg16);
-
-	/* Clean AER Root Error Status */
-	pos = dev->aer_cap;
-	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
-	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
-	status &= ~mask; /* Clear corresponding nonfatal bits */
-	pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
-}
-
-/**
- * aer_service_init - register AER root service driver
- *
- * Invoked when AER root service driver is loaded.
- */
-static int __init aer_service_init(void)
-{
-	if (!pci_aer_available() || aer_acpi_firmware_first())
-		return -ENXIO;
-	return pcie_port_service_register(&aerdriver);
-}
-device_initcall(aer_service_init);
diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h
deleted file mode 100644
index 6e0ad9a68fd9..000000000000
--- a/drivers/pci/pcie/aer/aerdrv.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2006 Intel Corp.
- *	Tom Long Nguyen (tom.l.nguyen@intel.com)
- *	Zhang Yanmin (yanmin.zhang@intel.com)
- */
-
-#ifndef _AERDRV_H_
-#define _AERDRV_H_
-
-#include <linux/workqueue.h>
-#include <linux/aer.h>
-#include <linux/interrupt.h>
-
-#include "../portdrv.h"
-
-#define SYSTEM_ERROR_INTR_ON_MESG_MASK	(PCI_EXP_RTCTL_SECEE|	\
-					PCI_EXP_RTCTL_SENFEE|	\
-					PCI_EXP_RTCTL_SEFEE)
-#define ROOT_PORT_INTR_ON_MESG_MASK	(PCI_ERR_ROOT_CMD_COR_EN|	\
-					PCI_ERR_ROOT_CMD_NONFATAL_EN|	\
-					PCI_ERR_ROOT_CMD_FATAL_EN)
-#define ERR_COR_ID(d)			(d & 0xffff)
-#define ERR_UNCOR_ID(d)			(d >> 16)
-
-#define AER_ERROR_SOURCES_MAX		100
-
-#define AER_LOG_TLP_MASKS		(PCI_ERR_UNC_POISON_TLP|	\
-					PCI_ERR_UNC_ECRC|		\
-					PCI_ERR_UNC_UNSUP|		\
-					PCI_ERR_UNC_COMP_ABORT|		\
-					PCI_ERR_UNC_UNX_COMP|		\
-					PCI_ERR_UNC_MALF_TLP)
-
-#define AER_MAX_MULTI_ERR_DEVICES	5	/* Not likely to have more */
-struct aer_err_info {
-	struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES];
-	int error_dev_num;
-
-	unsigned int id:16;
-
-	unsigned int severity:2;	/* 0:NONFATAL | 1:FATAL | 2:COR */
-	unsigned int __pad1:5;
-	unsigned int multi_error_valid:1;
-
-	unsigned int first_error:5;
-	unsigned int __pad2:2;
-	unsigned int tlp_header_valid:1;
-
-	unsigned int status;		/* COR/UNCOR Error Status */
-	unsigned int mask;		/* COR/UNCOR Error Mask */
-	struct aer_header_log_regs tlp;	/* TLP Header */
-};
-
-struct aer_err_source {
-	unsigned int status;
-	unsigned int id;
-};
-
-struct aer_rpc {
-	struct pci_dev *rpd;		/* Root Port device */
-	struct work_struct dpc_handler;
-	struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX];
-	struct aer_err_info e_info;
-	unsigned short prod_idx;	/* Error Producer Index */
-	unsigned short cons_idx;	/* Error Consumer Index */
-	int isr;
-	spinlock_t e_lock;		/*
-					 * Lock access to Error Status/ID Regs
-					 * and error producer/consumer index
-					 */
-	struct mutex rpc_mutex;		/*
-					 * only one thread could do
-					 * recovery on the same
-					 * root port hierarchy
-					 */
-};
-
-extern struct bus_type pcie_port_bus_type;
-void aer_isr(struct work_struct *work);
-void aer_print_error(struct pci_dev *dev, struct aer_err_info *info);
-void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info);
-irqreturn_t aer_irq(int irq, void *context);
-
-#ifdef CONFIG_ACPI_APEI
-int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
-#else
-static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
-{
-	if (pci_dev->__aer_firmware_first_valid)
-		return pci_dev->__aer_firmware_first;
-	return 0;
-}
-#endif
-#endif /* _AERDRV_H_ */
diff --git a/drivers/pci/pcie/aer/aerdrv_acpi.c b/drivers/pci/pcie/aer/aerdrv_acpi.c
deleted file mode 100644
index 08c87de13cb8..000000000000
--- a/drivers/pci/pcie/aer/aerdrv_acpi.c
+++ /dev/null
@@ -1,141 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Access ACPI _OSC method
- *
- * Copyright (C) 2006 Intel Corp.
- *	Tom Long Nguyen (tom.l.nguyen@intel.com)
- *	Zhang Yanmin (yanmin.zhang@intel.com)
- */
-
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/pm.h>
-#include <linux/suspend.h>
-#include <linux/acpi.h>
-#include <linux/pci-acpi.h>
-#include <linux/delay.h>
-#include <acpi/apei.h>
-#include "aerdrv.h"
-
-#ifdef CONFIG_ACPI_APEI
-static inline int hest_match_pci(struct acpi_hest_aer_common *p,
-				 struct pci_dev *pci)
-{
-	return   ACPI_HEST_SEGMENT(p->bus) == pci_domain_nr(pci->bus) &&
-		 ACPI_HEST_BUS(p->bus)     == pci->bus->number &&
-		 p->device                 == PCI_SLOT(pci->devfn) &&
-		 p->function               == PCI_FUNC(pci->devfn);
-}
-
-static inline bool hest_match_type(struct acpi_hest_header *hest_hdr,
-				struct pci_dev *dev)
-{
-	u16 hest_type = hest_hdr->type;
-	u8 pcie_type = pci_pcie_type(dev);
-
-	if ((hest_type == ACPI_HEST_TYPE_AER_ROOT_PORT &&
-		pcie_type == PCI_EXP_TYPE_ROOT_PORT) ||
-	    (hest_type == ACPI_HEST_TYPE_AER_ENDPOINT &&
-		pcie_type == PCI_EXP_TYPE_ENDPOINT) ||
-	    (hest_type == ACPI_HEST_TYPE_AER_BRIDGE &&
-		(dev->class >> 16) == PCI_BASE_CLASS_BRIDGE))
-		return true;
-	return false;
-}
-
-struct aer_hest_parse_info {
-	struct pci_dev *pci_dev;
-	int firmware_first;
-};
-
-static int hest_source_is_pcie_aer(struct acpi_hest_header *hest_hdr)
-{
-	if (hest_hdr->type == ACPI_HEST_TYPE_AER_ROOT_PORT ||
-	    hest_hdr->type == ACPI_HEST_TYPE_AER_ENDPOINT ||
-	    hest_hdr->type == ACPI_HEST_TYPE_AER_BRIDGE)
-		return 1;
-	return 0;
-}
-
-static int aer_hest_parse(struct acpi_hest_header *hest_hdr, void *data)
-{
-	struct aer_hest_parse_info *info = data;
-	struct acpi_hest_aer_common *p;
-	int ff;
-
-	if (!hest_source_is_pcie_aer(hest_hdr))
-		return 0;
-
-	p = (struct acpi_hest_aer_common *)(hest_hdr + 1);
-	ff = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST);
-
-	/*
-	 * If no specific device is supplied, determine whether
-	 * FIRMWARE_FIRST is set for *any* PCIe device.
-	 */
-	if (!info->pci_dev) {
-		info->firmware_first |= ff;
-		return 0;
-	}
-
-	/* Otherwise, check the specific device */
-	if (p->flags & ACPI_HEST_GLOBAL) {
-		if (hest_match_type(hest_hdr, info->pci_dev))
-			info->firmware_first = ff;
-	} else
-		if (hest_match_pci(p, info->pci_dev))
-			info->firmware_first = ff;
-
-	return 0;
-}
-
-static void aer_set_firmware_first(struct pci_dev *pci_dev)
-{
-	int rc;
-	struct aer_hest_parse_info info = {
-		.pci_dev	= pci_dev,
-		.firmware_first	= 0,
-	};
-
-	rc = apei_hest_parse(aer_hest_parse, &info);
-
-	if (rc)
-		pci_dev->__aer_firmware_first = 0;
-	else
-		pci_dev->__aer_firmware_first = info.firmware_first;
-	pci_dev->__aer_firmware_first_valid = 1;
-}
-
-int pcie_aer_get_firmware_first(struct pci_dev *dev)
-{
-	if (!pci_is_pcie(dev))
-		return 0;
-
-	if (!dev->__aer_firmware_first_valid)
-		aer_set_firmware_first(dev);
-	return dev->__aer_firmware_first;
-}
-
-static bool aer_firmware_first;
-
-/**
- * aer_acpi_firmware_first - Check if APEI should control AER.
- */
-bool aer_acpi_firmware_first(void)
-{
-	static bool parsed = false;
-	struct aer_hest_parse_info info = {
-		.pci_dev	= NULL,	/* Check all PCIe devices */
-		.firmware_first	= 0,
-	};
-
-	if (!parsed) {
-		apei_hest_parse(aer_hest_parse, &info);
-		aer_firmware_first = info.firmware_first;
-		parsed = true;
-	}
-	return aer_firmware_first;
-}
-#endif
diff --git a/drivers/pci/pcie/aer/aerdrv_core.c b/drivers/pci/pcie/aer/aerdrv_core.c
deleted file mode 100644
index 42d4f3f32282..000000000000
--- a/drivers/pci/pcie/aer/aerdrv_core.c
+++ /dev/null
@@ -1,496 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Implement the core part of PCIe AER. When a PCIe error is delivered, an
- * error message will be collected and printed to console, then an error
- * recovery procedure will be executed by following the PCI error recovery
- * rules.
- *
- * Copyright (C) 2006 Intel Corp.
- *	Tom Long Nguyen (tom.l.nguyen@intel.com)
- *	Zhang Yanmin (yanmin.zhang@intel.com)
- */
-
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/pm.h>
-#include <linux/suspend.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/kfifo.h>
-#include "aerdrv.h"
-#include "../../pci.h"
-
-#define	PCI_EXP_AER_FLAGS	(PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | \
-				 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE)
-
-int pci_enable_pcie_error_reporting(struct pci_dev *dev)
-{
-	if (pcie_aer_get_firmware_first(dev))
-		return -EIO;
-
-	if (!dev->aer_cap)
-		return -EIO;
-
-	return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
-}
-EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
-
-int pci_disable_pcie_error_reporting(struct pci_dev *dev)
-{
-	if (pcie_aer_get_firmware_first(dev))
-		return -EIO;
-
-	return pcie_capability_clear_word(dev, PCI_EXP_DEVCTL,
-					  PCI_EXP_AER_FLAGS);
-}
-EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
-
-int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
-{
-	int pos;
-	u32 status;
-
-	pos = dev->aer_cap;
-	if (!pos)
-		return -EIO;
-
-	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
-	if (status)
-		pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(pci_cleanup_aer_uncorrect_error_status);
-
-int pci_cleanup_aer_error_status_regs(struct pci_dev *dev)
-{
-	int pos;
-	u32 status;
-	int port_type;
-
-	if (!pci_is_pcie(dev))
-		return -ENODEV;
-
-	pos = dev->aer_cap;
-	if (!pos)
-		return -EIO;
-
-	port_type = pci_pcie_type(dev);
-	if (port_type == PCI_EXP_TYPE_ROOT_PORT) {
-		pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &status);
-		pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, status);
-	}
-
-	pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
-	pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, status);
-
-	pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
-	pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
-
-	return 0;
-}
-
-int pci_aer_init(struct pci_dev *dev)
-{
-	dev->aer_cap = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
-	return pci_cleanup_aer_error_status_regs(dev);
-}
-
-/**
- * add_error_device - list device to be handled
- * @e_info: pointer to error info
- * @dev: pointer to pci_dev to be added
- */
-static int add_error_device(struct aer_err_info *e_info, struct pci_dev *dev)
-{
-	if (e_info->error_dev_num < AER_MAX_MULTI_ERR_DEVICES) {
-		e_info->dev[e_info->error_dev_num] = dev;
-		e_info->error_dev_num++;
-		return 0;
-	}
-	return -ENOSPC;
-}
-
-/**
- * is_error_source - check whether the device is source of reported error
- * @dev: pointer to pci_dev to be checked
- * @e_info: pointer to reported error info
- */
-static bool is_error_source(struct pci_dev *dev, struct aer_err_info *e_info)
-{
-	int pos;
-	u32 status, mask;
-	u16 reg16;
-
-	/*
-	 * When bus id is equal to 0, it might be a bad id
-	 * reported by root port.
-	 */
-	if ((PCI_BUS_NUM(e_info->id) != 0) &&
-	    !(dev->bus->bus_flags & PCI_BUS_FLAGS_NO_AERSID)) {
-		/* Device ID match? */
-		if (e_info->id == ((dev->bus->number << 8) | dev->devfn))
-			return true;
-
-		/* Continue id comparing if there is no multiple error */
-		if (!e_info->multi_error_valid)
-			return false;
-	}
-
-	/*
-	 * When either
-	 *      1) bus id is equal to 0. Some ports might lose the bus
-	 *              id of error source id;
-	 *      2) bus flag PCI_BUS_FLAGS_NO_AERSID is set
-	 *      3) There are multiple errors and prior ID comparing fails;
-	 * We check AER status registers to find possible reporter.
-	 */
-	if (atomic_read(&dev->enable_cnt) == 0)
-		return false;
-
-	/* Check if AER is enabled */
-	pcie_capability_read_word(dev, PCI_EXP_DEVCTL, &reg16);
-	if (!(reg16 & PCI_EXP_AER_FLAGS))
-		return false;
-
-	pos = dev->aer_cap;
-	if (!pos)
-		return false;
-
-	/* Check if error is recorded */
-	if (e_info->severity == AER_CORRECTABLE) {
-		pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &status);
-		pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK, &mask);
-	} else {
-		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
-		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, &mask);
-	}
-	if (status & ~mask)
-		return true;
-
-	return false;
-}
-
-static int find_device_iter(struct pci_dev *dev, void *data)
-{
-	struct aer_err_info *e_info = (struct aer_err_info *)data;
-
-	if (is_error_source(dev, e_info)) {
-		/* List this device */
-		if (add_error_device(e_info, dev)) {
-			/* We cannot handle more... Stop iteration */
-			/* TODO: Should print error message here? */
-			return 1;
-		}
-
-		/* If there is only a single error, stop iteration */
-		if (!e_info->multi_error_valid)
-			return 1;
-	}
-	return 0;
-}
-
-/**
- * find_source_device - search through device hierarchy for source device
- * @parent: pointer to Root Port pci_dev data structure
- * @e_info: including detailed error information such like id
- *
- * Return true if found.
- *
- * Invoked by DPC when error is detected at the Root Port.
- * Caller of this function must set id, severity, and multi_error_valid of
- * struct aer_err_info pointed by @e_info properly.  This function must fill
- * e_info->error_dev_num and e_info->dev[], based on the given information.
- */
-static bool find_source_device(struct pci_dev *parent,
-		struct aer_err_info *e_info)
-{
-	struct pci_dev *dev = parent;
-	int result;
-
-	/* Must reset in this function */
-	e_info->error_dev_num = 0;
-
-	/* Is Root Port an agent that sends error message? */
-	result = find_device_iter(dev, e_info);
-	if (result)
-		return true;
-
-	pci_walk_bus(parent->subordinate, find_device_iter, e_info);
-
-	if (!e_info->error_dev_num) {
-		pci_printk(KERN_DEBUG, parent, "can't find device of ID%04x\n",
-			   e_info->id);
-		return false;
-	}
-	return true;
-}
-
-/**
- * handle_error_source - handle logging error into an event log
- * @dev: pointer to pci_dev data structure of error source device
- * @info: comprehensive error information
- *
- * Invoked when an error being detected by Root Port.
- */
-static void handle_error_source(struct pci_dev *dev, struct aer_err_info *info)
-{
-	int pos;
-
-	if (info->severity == AER_CORRECTABLE) {
-		/*
-		 * Correctable error does not need software intervention.
-		 * No need to go through error recovery process.
-		 */
-		pos = dev->aer_cap;
-		if (pos)
-			pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS,
-					info->status);
-	} else if (info->severity == AER_NONFATAL)
-		pcie_do_nonfatal_recovery(dev);
-	else if (info->severity == AER_FATAL)
-		pcie_do_fatal_recovery(dev, PCIE_PORT_SERVICE_AER);
-}
-
-#ifdef CONFIG_ACPI_APEI_PCIEAER
-
-#define AER_RECOVER_RING_ORDER		4
-#define AER_RECOVER_RING_SIZE		(1 << AER_RECOVER_RING_ORDER)
-
-struct aer_recover_entry {
-	u8	bus;
-	u8	devfn;
-	u16	domain;
-	int	severity;
-	struct aer_capability_regs *regs;
-};
-
-static DEFINE_KFIFO(aer_recover_ring, struct aer_recover_entry,
-		    AER_RECOVER_RING_SIZE);
-
-static void aer_recover_work_func(struct work_struct *work)
-{
-	struct aer_recover_entry entry;
-	struct pci_dev *pdev;
-
-	while (kfifo_get(&aer_recover_ring, &entry)) {
-		pdev = pci_get_domain_bus_and_slot(entry.domain, entry.bus,
-						   entry.devfn);
-		if (!pdev) {
-			pr_err("AER recover: Can not find pci_dev for %04x:%02x:%02x:%x\n",
-			       entry.domain, entry.bus,
-			       PCI_SLOT(entry.devfn), PCI_FUNC(entry.devfn));
-			continue;
-		}
-		cper_print_aer(pdev, entry.severity, entry.regs);
-		if (entry.severity == AER_NONFATAL)
-			pcie_do_nonfatal_recovery(pdev);
-		else if (entry.severity == AER_FATAL)
-			pcie_do_fatal_recovery(pdev, PCIE_PORT_SERVICE_AER);
-		pci_dev_put(pdev);
-	}
-}
-
-/*
- * Mutual exclusion for writers of aer_recover_ring, reader side don't
- * need lock, because there is only one reader and lock is not needed
- * between reader and writer.
- */
-static DEFINE_SPINLOCK(aer_recover_ring_lock);
-static DECLARE_WORK(aer_recover_work, aer_recover_work_func);
-
-void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,
-		       int severity, struct aer_capability_regs *aer_regs)
-{
-	unsigned long flags;
-	struct aer_recover_entry entry = {
-		.bus		= bus,
-		.devfn		= devfn,
-		.domain		= domain,
-		.severity	= severity,
-		.regs		= aer_regs,
-	};
-
-	spin_lock_irqsave(&aer_recover_ring_lock, flags);
-	if (kfifo_put(&aer_recover_ring, entry))
-		schedule_work(&aer_recover_work);
-	else
-		pr_err("AER recover: Buffer overflow when recovering AER for %04x:%02x:%02x:%x\n",
-		       domain, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
-	spin_unlock_irqrestore(&aer_recover_ring_lock, flags);
-}
-EXPORT_SYMBOL_GPL(aer_recover_queue);
-#endif
-
-/**
- * get_device_error_info - read error status from dev and store it to info
- * @dev: pointer to the device expected to have a error record
- * @info: pointer to structure to store the error record
- *
- * Return 1 on success, 0 on error.
- *
- * Note that @info is reused among all error devices. Clear fields properly.
- */
-static int get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
-{
-	int pos, temp;
-
-	/* Must reset in this function */
-	info->status = 0;
-	info->tlp_header_valid = 0;
-
-	pos = dev->aer_cap;
-
-	/* The device might not support AER */
-	if (!pos)
-		return 0;
-
-	if (info->severity == AER_CORRECTABLE) {
-		pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS,
-			&info->status);
-		pci_read_config_dword(dev, pos + PCI_ERR_COR_MASK,
-			&info->mask);
-		if (!(info->status & ~info->mask))
-			return 0;
-	} else if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
-		info->severity == AER_NONFATAL) {
-
-		/* Link is still healthy for IO reads */
-		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS,
-			&info->status);
-		pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_MASK,
-			&info->mask);
-		if (!(info->status & ~info->mask))
-			return 0;
-
-		/* Get First Error Pointer */
-		pci_read_config_dword(dev, pos + PCI_ERR_CAP, &temp);
-		info->first_error = PCI_ERR_CAP_FEP(temp);
-
-		if (info->status & AER_LOG_TLP_MASKS) {
-			info->tlp_header_valid = 1;
-			pci_read_config_dword(dev,
-				pos + PCI_ERR_HEADER_LOG, &info->tlp.dw0);
-			pci_read_config_dword(dev,
-				pos + PCI_ERR_HEADER_LOG + 4, &info->tlp.dw1);
-			pci_read_config_dword(dev,
-				pos + PCI_ERR_HEADER_LOG + 8, &info->tlp.dw2);
-			pci_read_config_dword(dev,
-				pos + PCI_ERR_HEADER_LOG + 12, &info->tlp.dw3);
-		}
-	}
-
-	return 1;
-}
-
-static inline void aer_process_err_devices(struct aer_err_info *e_info)
-{
-	int i;
-
-	/* Report all before handle them, not to lost records by reset etc. */
-	for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
-		if (get_device_error_info(e_info->dev[i], e_info))
-			aer_print_error(e_info->dev[i], e_info);
-	}
-	for (i = 0; i < e_info->error_dev_num && e_info->dev[i]; i++) {
-		if (get_device_error_info(e_info->dev[i], e_info))
-			handle_error_source(e_info->dev[i], e_info);
-	}
-}
-
-/**
- * aer_isr_one_error - consume an error detected by root port
- * @rpc: pointer to the root port which holds an error
- * @e_src: pointer to an error source
- */
-static void aer_isr_one_error(struct aer_rpc *rpc,
-		struct aer_err_source *e_src)
-{
-	struct pci_dev *pdev = rpc->rpd;
-	struct aer_err_info *e_info = &rpc->e_info;
-
-	/*
-	 * There is a possibility that both correctable error and
-	 * uncorrectable error being logged. Report correctable error first.
-	 */
-	if (e_src->status & PCI_ERR_ROOT_COR_RCV) {
-		e_info->id = ERR_COR_ID(e_src->id);
-		e_info->severity = AER_CORRECTABLE;
-
-		if (e_src->status & PCI_ERR_ROOT_MULTI_COR_RCV)
-			e_info->multi_error_valid = 1;
-		else
-			e_info->multi_error_valid = 0;
-		aer_print_port_info(pdev, e_info);
-
-		if (find_source_device(pdev, e_info))
-			aer_process_err_devices(e_info);
-	}
-
-	if (e_src->status & PCI_ERR_ROOT_UNCOR_RCV) {
-		e_info->id = ERR_UNCOR_ID(e_src->id);
-
-		if (e_src->status & PCI_ERR_ROOT_FATAL_RCV)
-			e_info->severity = AER_FATAL;
-		else
-			e_info->severity = AER_NONFATAL;
-
-		if (e_src->status & PCI_ERR_ROOT_MULTI_UNCOR_RCV)
-			e_info->multi_error_valid = 1;
-		else
-			e_info->multi_error_valid = 0;
-
-		aer_print_port_info(pdev, e_info);
-
-		if (find_source_device(pdev, e_info))
-			aer_process_err_devices(e_info);
-	}
-}
-
-/**
- * get_e_source - retrieve an error source
- * @rpc: pointer to the root port which holds an error
- * @e_src: pointer to store retrieved error source
- *
- * Return 1 if an error source is retrieved, otherwise 0.
- *
- * Invoked by DPC handler to consume an error.
- */
-static int get_e_source(struct aer_rpc *rpc, struct aer_err_source *e_src)
-{
-	unsigned long flags;
-
-	/* Lock access to Root error producer/consumer index */
-	spin_lock_irqsave(&rpc->e_lock, flags);
-	if (rpc->prod_idx == rpc->cons_idx) {
-		spin_unlock_irqrestore(&rpc->e_lock, flags);
-		return 0;
-	}
-
-	*e_src = rpc->e_sources[rpc->cons_idx];
-	rpc->cons_idx++;
-	if (rpc->cons_idx == AER_ERROR_SOURCES_MAX)
-		rpc->cons_idx = 0;
-	spin_unlock_irqrestore(&rpc->e_lock, flags);
-
-	return 1;
-}
-
-/**
- * aer_isr - consume errors detected by root port
- * @work: definition of this work item
- *
- * Invoked, as DPC, when root port records new detected error
- */
-void aer_isr(struct work_struct *work)
-{
-	struct aer_rpc *rpc = container_of(work, struct aer_rpc, dpc_handler);
-	struct aer_err_source uninitialized_var(e_src);
-
-	mutex_lock(&rpc->rpc_mutex);
-	while (get_e_source(rpc, &e_src))
-		aer_isr_one_error(rpc, &e_src);
-	mutex_unlock(&rpc->rpc_mutex);
-}
diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c
deleted file mode 100644
index 4985bdf64c2e..000000000000
--- a/drivers/pci/pcie/aer/aerdrv_errprint.c
+++ /dev/null
@@ -1,260 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Format error messages and print them to console.
- *
- * Copyright (C) 2006 Intel Corp.
- *	Tom Long Nguyen (tom.l.nguyen@intel.com)
- *	Zhang Yanmin (yanmin.zhang@intel.com)
- */
-
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/pm.h>
-#include <linux/suspend.h>
-#include <linux/cper.h>
-
-#include "aerdrv.h"
-#include <ras/ras_event.h>
-
-#define AER_AGENT_RECEIVER		0
-#define AER_AGENT_REQUESTER		1
-#define AER_AGENT_COMPLETER		2
-#define AER_AGENT_TRANSMITTER		3
-
-#define AER_AGENT_REQUESTER_MASK(t)	((t == AER_CORRECTABLE) ?	\
-	0 : (PCI_ERR_UNC_COMP_TIME|PCI_ERR_UNC_UNSUP))
-#define AER_AGENT_COMPLETER_MASK(t)	((t == AER_CORRECTABLE) ?	\
-	0 : PCI_ERR_UNC_COMP_ABORT)
-#define AER_AGENT_TRANSMITTER_MASK(t)	((t == AER_CORRECTABLE) ?	\
-	(PCI_ERR_COR_REP_ROLL|PCI_ERR_COR_REP_TIMER) : 0)
-
-#define AER_GET_AGENT(t, e)						\
-	((e & AER_AGENT_COMPLETER_MASK(t)) ? AER_AGENT_COMPLETER :	\
-	(e & AER_AGENT_REQUESTER_MASK(t)) ? AER_AGENT_REQUESTER :	\
-	(e & AER_AGENT_TRANSMITTER_MASK(t)) ? AER_AGENT_TRANSMITTER :	\
-	AER_AGENT_RECEIVER)
-
-#define AER_PHYSICAL_LAYER_ERROR	0
-#define AER_DATA_LINK_LAYER_ERROR	1
-#define AER_TRANSACTION_LAYER_ERROR	2
-
-#define AER_PHYSICAL_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ?	\
-	PCI_ERR_COR_RCVR : 0)
-#define AER_DATA_LINK_LAYER_ERROR_MASK(t) ((t == AER_CORRECTABLE) ?	\
-	(PCI_ERR_COR_BAD_TLP|						\
-	PCI_ERR_COR_BAD_DLLP|						\
-	PCI_ERR_COR_REP_ROLL|						\
-	PCI_ERR_COR_REP_TIMER) : PCI_ERR_UNC_DLP)
-
-#define AER_GET_LAYER_ERROR(t, e)					\
-	((e & AER_PHYSICAL_LAYER_ERROR_MASK(t)) ? AER_PHYSICAL_LAYER_ERROR : \
-	(e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \
-	AER_TRANSACTION_LAYER_ERROR)
-
-/*
- * AER error strings
- */
-static const char *aer_error_severity_string[] = {
-	"Uncorrected (Non-Fatal)",
-	"Uncorrected (Fatal)",
-	"Corrected"
-};
-
-static const char *aer_error_layer[] = {
-	"Physical Layer",
-	"Data Link Layer",
-	"Transaction Layer"
-};
-
-static const char *aer_correctable_error_string[] = {
-	"Receiver Error",		/* Bit Position 0	*/
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-	"Bad TLP",			/* Bit Position 6	*/
-	"Bad DLLP",			/* Bit Position 7	*/
-	"RELAY_NUM Rollover",		/* Bit Position 8	*/
-	NULL,
-	NULL,
-	NULL,
-	"Replay Timer Timeout",		/* Bit Position 12	*/
-	"Advisory Non-Fatal",		/* Bit Position 13	*/
-	"Corrected Internal Error",	/* Bit Position 14	*/
-	"Header Log Overflow",		/* Bit Position 15	*/
-};
-
-static const char *aer_uncorrectable_error_string[] = {
-	"Undefined",			/* Bit Position 0	*/
-	NULL,
-	NULL,
-	NULL,
-	"Data Link Protocol",		/* Bit Position 4	*/
-	"Surprise Down Error",		/* Bit Position 5	*/
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-	NULL,
-	"Poisoned TLP",			/* Bit Position 12	*/
-	"Flow Control Protocol",	/* Bit Position 13	*/
-	"Completion Timeout",		/* Bit Position 14	*/
-	"Completer Abort",		/* Bit Position 15	*/
-	"Unexpected Completion",	/* Bit Position 16	*/
-	"Receiver Overflow",		/* Bit Position 17	*/
-	"Malformed TLP",		/* Bit Position 18	*/
-	"ECRC",				/* Bit Position 19	*/
-	"Unsupported Request",		/* Bit Position 20	*/
-	"ACS Violation",		/* Bit Position 21	*/
-	"Uncorrectable Internal Error",	/* Bit Position 22	*/
-	"MC Blocked TLP",		/* Bit Position 23	*/
-	"AtomicOp Egress Blocked",	/* Bit Position 24	*/
-	"TLP Prefix Blocked Error",	/* Bit Position 25	*/
-};
-
-static const char *aer_agent_string[] = {
-	"Receiver ID",
-	"Requester ID",
-	"Completer ID",
-	"Transmitter ID"
-};
-
-static void __print_tlp_header(struct pci_dev *dev,
-			       struct aer_header_log_regs *t)
-{
-	pci_err(dev, "  TLP Header: %08x %08x %08x %08x\n",
-		t->dw0, t->dw1, t->dw2, t->dw3);
-}
-
-static void __aer_print_error(struct pci_dev *dev,
-			      struct aer_err_info *info)
-{
-	int i, status;
-	const char *errmsg = NULL;
-	status = (info->status & ~info->mask);
-
-	for (i = 0; i < 32; i++) {
-		if (!(status & (1 << i)))
-			continue;
-
-		if (info->severity == AER_CORRECTABLE)
-			errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ?
-				aer_correctable_error_string[i] : NULL;
-		else
-			errmsg = i < ARRAY_SIZE(aer_uncorrectable_error_string) ?
-				aer_uncorrectable_error_string[i] : NULL;
-
-		if (errmsg)
-			pci_err(dev, "   [%2d] %-22s%s\n", i, errmsg,
-				info->first_error == i ? " (First)" : "");
-		else
-			pci_err(dev, "   [%2d] Unknown Error Bit%s\n",
-				i, info->first_error == i ? " (First)" : "");
-	}
-}
-
-void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
-{
-	int layer, agent;
-	int id = ((dev->bus->number << 8) | dev->devfn);
-
-	if (!info->status) {
-		pci_err(dev, "PCIe Bus Error: severity=%s, type=Inaccessible, (Unregistered Agent ID)\n",
-			aer_error_severity_string[info->severity]);
-		goto out;
-	}
-
-	layer = AER_GET_LAYER_ERROR(info->severity, info->status);
-	agent = AER_GET_AGENT(info->severity, info->status);
-
-	pci_err(dev, "PCIe Bus Error: severity=%s, type=%s, (%s)\n",
-		aer_error_severity_string[info->severity],
-		aer_error_layer[layer], aer_agent_string[agent]);
-
-	pci_err(dev, "  device [%04x:%04x] error status/mask=%08x/%08x\n",
-		dev->vendor, dev->device,
-		info->status, info->mask);
-
-	__aer_print_error(dev, info);
-
-	if (info->tlp_header_valid)
-		__print_tlp_header(dev, &info->tlp);
-
-out:
-	if (info->id && info->error_dev_num > 1 && info->id == id)
-		pci_err(dev, "  Error of this Agent is reported first\n");
-
-	trace_aer_event(dev_name(&dev->dev), (info->status & ~info->mask),
-			info->severity, info->tlp_header_valid, &info->tlp);
-}
-
-void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info)
-{
-	u8 bus = info->id >> 8;
-	u8 devfn = info->id & 0xff;
-
-	pci_info(dev, "AER: %s%s error received: %04x:%02x:%02x.%d\n",
-		info->multi_error_valid ? "Multiple " : "",
-		aer_error_severity_string[info->severity],
-		pci_domain_nr(dev->bus), bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
-}
-
-#ifdef CONFIG_ACPI_APEI_PCIEAER
-int cper_severity_to_aer(int cper_severity)
-{
-	switch (cper_severity) {
-	case CPER_SEV_RECOVERABLE:
-		return AER_NONFATAL;
-	case CPER_SEV_FATAL:
-		return AER_FATAL;
-	default:
-		return AER_CORRECTABLE;
-	}
-}
-EXPORT_SYMBOL_GPL(cper_severity_to_aer);
-
-void cper_print_aer(struct pci_dev *dev, int aer_severity,
-		    struct aer_capability_regs *aer)
-{
-	int layer, agent, tlp_header_valid = 0;
-	u32 status, mask;
-	struct aer_err_info info;
-
-	if (aer_severity == AER_CORRECTABLE) {
-		status = aer->cor_status;
-		mask = aer->cor_mask;
-	} else {
-		status = aer->uncor_status;
-		mask = aer->uncor_mask;
-		tlp_header_valid = status & AER_LOG_TLP_MASKS;
-	}
-
-	layer = AER_GET_LAYER_ERROR(aer_severity, status);
-	agent = AER_GET_AGENT(aer_severity, status);
-
-	memset(&info, 0, sizeof(info));
-	info.severity = aer_severity;
-	info.status = status;
-	info.mask = mask;
-	info.first_error = PCI_ERR_CAP_FEP(aer->cap_control);
-
-	pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
-	__aer_print_error(dev, &info);
-	pci_err(dev, "aer_layer=%s, aer_agent=%s\n",
-		aer_error_layer[layer], aer_agent_string[agent]);
-
-	if (aer_severity != AER_CORRECTABLE)
-		pci_err(dev, "aer_uncor_severity: 0x%08x\n",
-			aer->uncor_severity);
-
-	if (tlp_header_valid)
-		__print_tlp_header(dev, &aer->header_log);
-
-	trace_aer_event(dev_name(&dev->dev), (status & ~mask),
-			aer_severity, tlp_header_valid, &aer->header_log);
-}
-#endif
diff --git a/drivers/pci/pcie/aer/ecrc.c b/drivers/pci/pcie/aer/ecrc.c
deleted file mode 100644
index 039efb606e31..000000000000
--- a/drivers/pci/pcie/aer/ecrc.c
+++ /dev/null
@@ -1,117 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Enable/disable PCIe ECRC checking
- *
- * (C) Copyright 2009 Hewlett-Packard Development Company, L.P.
- *    Andrew Patterson <andrew.patterson@hp.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/pci.h>
-#include <linux/pci_regs.h>
-#include <linux/errno.h>
-#include "../../pci.h"
-
-#define ECRC_POLICY_DEFAULT 0		/* ECRC set by BIOS */
-#define ECRC_POLICY_OFF     1		/* ECRC off for performance */
-#define ECRC_POLICY_ON      2		/* ECRC on for data integrity */
-
-static int ecrc_policy = ECRC_POLICY_DEFAULT;
-
-static const char *ecrc_policy_str[] = {
-	[ECRC_POLICY_DEFAULT] = "bios",
-	[ECRC_POLICY_OFF] = "off",
-	[ECRC_POLICY_ON] = "on"
-};
-
-/**
- * enable_ercr_checking - enable PCIe ECRC checking for a device
- * @dev: the PCI device
- *
- * Returns 0 on success, or negative on failure.
- */
-static int enable_ecrc_checking(struct pci_dev *dev)
-{
-	int pos;
-	u32 reg32;
-
-	if (!pci_is_pcie(dev))
-		return -ENODEV;
-
-	pos = dev->aer_cap;
-	if (!pos)
-		return -ENODEV;
-
-	pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
-	if (reg32 & PCI_ERR_CAP_ECRC_GENC)
-		reg32 |= PCI_ERR_CAP_ECRC_GENE;
-	if (reg32 & PCI_ERR_CAP_ECRC_CHKC)
-		reg32 |= PCI_ERR_CAP_ECRC_CHKE;
-	pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
-
-	return 0;
-}
-
-/**
- * disable_ercr_checking - disables PCIe ECRC checking for a device
- * @dev: the PCI device
- *
- * Returns 0 on success, or negative on failure.
- */
-static int disable_ecrc_checking(struct pci_dev *dev)
-{
-	int pos;
-	u32 reg32;
-
-	if (!pci_is_pcie(dev))
-		return -ENODEV;
-
-	pos = dev->aer_cap;
-	if (!pos)
-		return -ENODEV;
-
-	pci_read_config_dword(dev, pos + PCI_ERR_CAP, &reg32);
-	reg32 &= ~(PCI_ERR_CAP_ECRC_GENE | PCI_ERR_CAP_ECRC_CHKE);
-	pci_write_config_dword(dev, pos + PCI_ERR_CAP, reg32);
-
-	return 0;
-}
-
-/**
- * pcie_set_ecrc_checking - set/unset PCIe ECRC checking for a device based on global policy
- * @dev: the PCI device
- */
-void pcie_set_ecrc_checking(struct pci_dev *dev)
-{
-	switch (ecrc_policy) {
-	case ECRC_POLICY_DEFAULT:
-		return;
-	case ECRC_POLICY_OFF:
-		disable_ecrc_checking(dev);
-		break;
-	case ECRC_POLICY_ON:
-		enable_ecrc_checking(dev);
-		break;
-	default:
-		return;
-	}
-}
-
-/**
- * pcie_ecrc_get_policy - parse kernel command-line ecrc option
- */
-void pcie_ecrc_get_policy(char *str)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(ecrc_policy_str); i++)
-		if (!strncmp(str, ecrc_policy_str[i],
-			     strlen(ecrc_policy_str[i])))
-			break;
-	if (i >= ARRAY_SIZE(ecrc_policy_str))
-		return;
-
-	ecrc_policy = i;
-}
diff --git a/drivers/pci/pcie/aer/aer_inject.c b/drivers/pci/pcie/aer_inject.c
index a49090935303..0eb24346cad3 100644
--- a/drivers/pci/pcie/aer/aer_inject.c
+++ b/drivers/pci/pcie/aer_inject.c
@@ -21,7 +21,8 @@
 #include <linux/uaccess.h>
 #include <linux/stddef.h>
 #include <linux/device.h>
-#include "aerdrv.h"
+
+#include "portdrv.h"
 
 /* Override the existing corrected and uncorrected error masks */
 static bool aer_mask_override;
diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index d6436681c535..921ed979109d 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -13,7 +13,6 @@
 
 #include "portdrv.h"
 #include "../pci.h"
-#include "aer/aerdrv.h"
 
 struct dpc_dev {
 	struct pcie_device	*dev;
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index 2bb5db7b53e6..6ffc797a0dc1 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -110,6 +110,21 @@ static inline bool pcie_pme_no_msi(void) { return false; }
 static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
 #endif /* !CONFIG_PCIE_PME */
 
+#ifdef CONFIG_ACPI_APEI
+int pcie_aer_get_firmware_first(struct pci_dev *pci_dev);
+#else
+static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev)
+{
+	if (pci_dev->__aer_firmware_first_valid)
+		return pci_dev->__aer_firmware_first;
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_PCIEAER
+irqreturn_t aer_irq(int irq, void *context);
+#endif
+
 struct pcie_port_service_driver *pcie_port_find_service(struct pci_dev *dev,
 							u32 service);
 struct device *pcie_port_find_device(struct pci_dev *dev, u32 service);