PCI: Collect all native drivers under drivers/pci/controller/

Native PCI drivers for root complex devices were originally all in
drivers/pci/host/.  Some of these devices can also be operated in endpoint
mode.  Drivers for endpoint mode didn't seem to fit in the "host"
directory, so we put both the root complex and endpoint drivers in
per-device directories, e.g., drivers/pci/dwc/, drivers/pci/cadence/, etc.

These per-device directories contain trivial Kconfig and Makefiles and
clutter drivers/pci/.  Make a new drivers/pci/controllers/ directory and
collect all the device-specific drivers there.

No functional change intended.

Link: https://lkml.kernel.org/r/1520304202-232891-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 275 insertions, 0 deletions

diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
new file mode 100644
index 000000000000..18fa09b3ac8f
--- /dev/null
+++ b/drivers/pci/controller/Kconfig
@@ -0,0 +1,275 @@
+# SPDX-License-Identifier: GPL-2.0
+
+menu "PCI controller drivers"
+	depends on PCI
+
+config PCI_MVEBU
+	bool "Marvell EBU PCIe controller"
+	depends on ARCH_MVEBU || ARCH_DOVE || COMPILE_TEST
+	depends on MVEBU_MBUS
+	depends on ARM
+	depends on OF
+
+config PCI_AARDVARK
+	bool "Aardvark PCIe controller"
+	depends on (ARCH_MVEBU && ARM64) || COMPILE_TEST
+	depends on OF
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	 Add support for Aardvark 64bit PCIe Host Controller. This
+	 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
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	 Say 'Y' here if you want kernel support for Xilinx
+	 NWL PCIe controller. The controller can act as Root Port
+	 or End Point. The current option selection will only
+	 support root port enabling.
+
+config PCI_FTPCI100
+	bool "Faraday Technology FTPCI100 PCI controller"
+	depends on OF
+	default ARCH_GEMINI
+
+config PCI_TEGRA
+	bool "NVIDIA Tegra PCIe controller"
+	depends on ARCH_TEGRA || COMPILE_TEST
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	  Say Y here if you want support for the PCIe host controller found
+	  on NVIDIA Tegra SoCs.
+
+config PCI_RCAR_GEN2
+	bool "Renesas R-Car Gen2 Internal PCI controller"
+	depends on ARCH_RENESAS || COMPILE_TEST
+	depends on ARM
+	help
+	  Say Y here if you want internal PCI support on R-Car Gen2 SoC.
+	  There are 3 internal PCI controllers available with a single
+	  built-in EHCI/OHCI host controller present on each one.
+
+config PCIE_RCAR
+	bool "Renesas R-Car PCIe controller"
+	depends on ARCH_RENESAS || COMPILE_TEST
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	  Say Y here if you want PCIe controller support on R-Car SoCs.
+
+config PCI_HOST_COMMON
+	bool
+	select PCI_ECAM
+
+config PCI_HOST_GENERIC
+	bool "Generic PCI host controller"
+	depends on OF
+	select PCI_HOST_COMMON
+	select IRQ_DOMAIN
+	select PCI_DOMAINS
+	help
+	  Say Y here if you want to support a simple generic PCI host
+	  controller, such as the one emulated by kvmtool.
+
+config PCIE_XILINX
+	bool "Xilinx AXI PCIe host bridge support"
+	depends on ARCH_ZYNQ || MICROBLAZE || (MIPS && PCI_DRIVERS_GENERIC) || COMPILE_TEST
+	help
+	  Say 'Y' here if you want kernel to support the Xilinx AXI PCIe
+	  Host Bridge driver.
+
+config PCI_XGENE
+	bool "X-Gene PCIe controller"
+	depends on ARM64 || COMPILE_TEST
+	depends on OF || (ACPI && PCI_QUIRKS)
+	help
+	  Say Y here if you want internal PCI support on APM X-Gene SoC.
+	  There are 5 internal PCIe ports available. Each port is GEN3 capable
+	  and have varied lanes from x1 to x8.
+
+config PCI_XGENE_MSI
+	bool "X-Gene v1 PCIe MSI feature"
+	depends on PCI_XGENE
+	depends on PCI_MSI_IRQ_DOMAIN
+	default y
+	help
+	  Say Y here if you want PCIe MSI support for the APM X-Gene v1 SoC.
+	  This MSI driver supports 5 PCIe ports on the APM X-Gene v1 SoC.
+
+config PCI_V3_SEMI
+	bool "V3 Semiconductor PCI controller"
+	depends on OF
+	depends on ARM || COMPILE_TEST
+	default ARCH_INTEGRATOR_AP
+
+config PCI_VERSATILE
+	bool "ARM Versatile PB PCI controller"
+	depends on ARCH_VERSATILE
+
+config PCIE_IPROC
+	tristate
+	select PCI_DOMAINS
+	help
+	  This enables the iProc PCIe core controller support for Broadcom's
+	  iProc family of SoCs. An appropriate bus interface driver needs
+	  to be enabled to select this.
+
+config PCIE_IPROC_PLATFORM
+	tristate "Broadcom iProc PCIe platform bus driver"
+	depends on ARCH_BCM_IPROC || (ARM && COMPILE_TEST)
+	depends on OF
+	select PCIE_IPROC
+	default ARCH_BCM_IPROC
+	help
+	  Say Y here if you want to use the Broadcom iProc PCIe controller
+	  through the generic platform bus interface
+
+config PCIE_IPROC_BCMA
+	tristate "Broadcom iProc PCIe BCMA bus driver"
+	depends on ARM && (ARCH_BCM_IPROC || COMPILE_TEST)
+	select PCIE_IPROC
+	select BCMA
+	default ARCH_BCM_5301X
+	help
+	  Say Y here if you want to use the Broadcom iProc PCIe controller
+	  through the BCMA bus interface
+
+config PCIE_IPROC_MSI
+	bool "Broadcom iProc PCIe MSI support"
+	depends on PCIE_IPROC_PLATFORM || PCIE_IPROC_BCMA
+	depends on PCI_MSI_IRQ_DOMAIN
+	default ARCH_BCM_IPROC
+	help
+	  Say Y here if you want to enable MSI support for Broadcom's iProc
+	  PCIe controller
+
+config PCIE_ALTERA
+	bool "Altera PCIe controller"
+	depends on ARM || NIOS2 || COMPILE_TEST
+	select PCI_DOMAINS
+	help
+	  Say Y here if you want to enable PCIe controller support on Altera
+	  FPGA.
+
+config PCIE_ALTERA_MSI
+	bool "Altera PCIe MSI feature"
+	depends on PCIE_ALTERA
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	  Say Y here if you want PCIe MSI support for the Altera FPGA.
+	  This MSI driver supports Altera MSI to GIC controller IP.
+
+config PCI_HOST_THUNDER_PEM
+	bool "Cavium Thunder PCIe controller to off-chip devices"
+	depends on ARM64 || COMPILE_TEST
+	depends on OF || (ACPI && PCI_QUIRKS)
+	select PCI_HOST_COMMON
+	help
+	  Say Y here if you want PCIe support for CN88XX Cavium Thunder SoCs.
+
+config PCI_HOST_THUNDER_ECAM
+	bool "Cavium Thunder ECAM controller to on-chip devices on pass-1.x silicon"
+	depends on ARM64 || COMPILE_TEST
+	depends on OF || (ACPI && PCI_QUIRKS)
+	select PCI_HOST_COMMON
+	help
+	  Say Y here if you want ECAM support for CN88XX-Pass-1.x Cavium Thunder SoCs.
+
+config PCIE_ROCKCHIP
+	bool
+	depends on PCI
+
+config PCIE_ROCKCHIP_HOST
+	tristate "Rockchip PCIe host controller"
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
+	depends on OF
+	depends on PCI_MSI_IRQ_DOMAIN
+	select MFD_SYSCON
+	select PCIE_ROCKCHIP
+	help
+	  Say Y here if you want internal PCI support on Rockchip SoC.
+	  There is 1 internal PCIe port available to support GEN2 with
+	  4 slots.
+
+config PCIE_ROCKCHIP_EP
+	bool "Rockchip PCIe endpoint controller"
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
+	depends on OF
+	depends on PCI_ENDPOINT
+	select MFD_SYSCON
+	select PCIE_ROCKCHIP
+	help
+	  Say Y here if you want to support Rockchip PCIe controller in
+	  endpoint mode on Rockchip SoC. There is 1 internal PCIe port
+	  available to support GEN2 with 4 slots.
+
+config PCIE_MEDIATEK
+	bool "MediaTek PCIe controller"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
+	depends on OF
+	depends on PCI_MSI_IRQ_DOMAIN
+	help
+	  Say Y here if you want to enable PCIe controller support on
+	  MediaTek SoCs.
+
+config PCIE_TANGO_SMP8759
+	bool "Tango SMP8759 PCIe controller (DANGEROUS)"
+	depends on ARCH_TANGO && PCI_MSI && OF
+	depends on BROKEN
+	select PCI_HOST_COMMON
+	help
+	  Say Y here to enable PCIe controller support for Sigma Designs
+	  Tango SMP8759-based systems.
+
+	  Note: The SMP8759 controller multiplexes PCI config and MMIO
+	  accesses, and Linux doesn't provide a way to serialize them.
+	  This can lead to data corruption if drivers perform concurrent
+	  config and MMIO accesses.
+
+config VMD
+	depends on PCI_MSI && X86_64 && SRCU
+	tristate "Intel Volume Management Device Driver"
+	---help---
+	  Adds support for the Intel Volume Management Device (VMD). VMD is a
+	  secondary PCI host bridge that allows PCI Express root ports,
+	  and devices attached to them, to be removed from the default
+	  PCI domain and placed within the VMD domain. This provides
+	  more bus resources than are otherwise possible with a
+	  single domain. If you know your system provides one of these and
+	  has devices attached to it, say Y; if you are not sure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called vmd.
+
+source "drivers/pci/controller/dwc/Kconfig"
+endmenu