linux-stable/drivers/pci/hotplug/Kconfig
Gavin Shan 66725152fb PCI/hotplug: PowerPC PowerNV PCI hotplug driver
This adds standalone driver to support PCI hotplug for PowerPC PowerNV
platform that runs on top of skiboot firmware. The firmware identifies
hotpluggable slots and marked their device tree node with proper
"ibm,slot-pluggable" and "ibm,reset-by-firmware". The driver scans
device tree nodes to create/register PCI hotplug slot accordingly.

The PCI slots are organized in fashion of tree, which means one
PCI slot might have parent PCI slot and parent PCI slot possibly
contains multiple child PCI slots. At the plugging time, the parent
PCI slot is populated before its children. The child PCI slots are
removed before their parent PCI slot can be removed from the system.

If the skiboot firmware doesn't support slot status retrieval, the PCI
slot device node shouldn't have property "ibm,reset-by-firmware". In
that case, none of valid PCI slots will be detected from device tree.
The skiboot firmware doesn't export the capability to access attention
LEDs yet and it's something for TBD.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-06-21 15:30:58 +10:00

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#
# PCI Hotplug support
#
menuconfig HOTPLUG_PCI
bool "Support for PCI Hotplug"
depends on PCI && SYSFS
---help---
Say Y here if you have a motherboard with a PCI Hotplug controller.
This allows you to add and remove PCI cards while the machine is
powered up and running.
When in doubt, say N.
if HOTPLUG_PCI
config HOTPLUG_PCI_COMPAQ
tristate "Compaq PCI Hotplug driver"
depends on X86 && PCI_BIOS
help
Say Y here if you have a motherboard with a Compaq PCI Hotplug
controller.
To compile this driver as a module, choose M here: the
module will be called cpqphp.
When in doubt, say N.
config HOTPLUG_PCI_COMPAQ_NVRAM
bool "Save configuration into NVRAM on Compaq servers"
depends on HOTPLUG_PCI_COMPAQ
help
Say Y here if you have a Compaq server that has a PCI Hotplug
controller. This will allow the PCI Hotplug driver to store the PCI
system configuration options in NVRAM.
When in doubt, say N.
config HOTPLUG_PCI_IBM
tristate "IBM PCI Hotplug driver"
depends on X86_IO_APIC && X86 && PCI_BIOS
help
Say Y here if you have a motherboard with a IBM PCI Hotplug
controller.
To compile this driver as a module, choose M here: the
module will be called ibmphp.
When in doubt, say N.
config HOTPLUG_PCI_ACPI
bool "ACPI PCI Hotplug driver"
depends on HOTPLUG_PCI=y && ((!ACPI_DOCK && ACPI) || (ACPI_DOCK))
help
Say Y here if you have a system that supports PCI Hotplug using
ACPI.
When in doubt, say N.
config HOTPLUG_PCI_ACPI_IBM
tristate "ACPI PCI Hotplug driver IBM extensions"
depends on HOTPLUG_PCI_ACPI
help
Say Y here if you have an IBM system that supports PCI Hotplug using
ACPI.
To compile this driver as a module, choose M here: the
module will be called acpiphp_ibm.
When in doubt, say N.
config HOTPLUG_PCI_CPCI
bool "CompactPCI Hotplug driver"
help
Say Y here if you have a CompactPCI system card with CompactPCI
hotswap support per the PICMG 2.1 specification.
When in doubt, say N.
config HOTPLUG_PCI_CPCI_ZT5550
tristate "Ziatech ZT5550 CompactPCI Hotplug driver"
depends on HOTPLUG_PCI_CPCI && X86
help
Say Y here if you have an Performance Technologies (formerly Intel,
formerly just Ziatech) Ziatech ZT5550 CompactPCI system card.
To compile this driver as a module, choose M here: the
module will be called cpcihp_zt5550.
When in doubt, say N.
config HOTPLUG_PCI_CPCI_GENERIC
tristate "Generic port I/O CompactPCI Hotplug driver"
depends on HOTPLUG_PCI_CPCI && X86
help
Say Y here if you have a CompactPCI system card that exposes the #ENUM
hotswap signal as a bit in a system register that can be read through
standard port I/O.
To compile this driver as a module, choose M here: the
module will be called cpcihp_generic.
When in doubt, say N.
config HOTPLUG_PCI_SHPC
tristate "SHPC PCI Hotplug driver"
help
Say Y here if you have a motherboard with a SHPC PCI Hotplug
controller.
To compile this driver as a module, choose M here: the
module will be called shpchp.
When in doubt, say N.
config HOTPLUG_PCI_POWERNV
tristate "PowerPC PowerNV PCI Hotplug driver"
depends on PPC_POWERNV && EEH
select OF_DYNAMIC
help
Say Y here if you run PowerPC PowerNV platform that supports
PCI Hotplug
To compile this driver as a module, choose M here: the
module will be called pnv-php.
When in doubt, say N.
config HOTPLUG_PCI_RPA
tristate "RPA PCI Hotplug driver"
depends on PPC_PSERIES && EEH
help
Say Y here if you have a RPA system that supports PCI Hotplug.
To compile this driver as a module, choose M here: the
module will be called rpaphp.
When in doubt, say N.
config HOTPLUG_PCI_RPA_DLPAR
tristate "RPA Dynamic Logical Partitioning for I/O slots"
depends on HOTPLUG_PCI_RPA
help
Say Y here if your system supports Dynamic Logical Partitioning
for I/O slots.
To compile this driver as a module, choose M here: the
module will be called rpadlpar_io.
When in doubt, say N.
config HOTPLUG_PCI_SGI
tristate "SGI PCI Hotplug Support"
depends on IA64_SGI_SN2 || IA64_GENERIC
help
Say Y here if you want to use the SGI Altix Hotplug
Driver for PCI devices.
When in doubt, say N.
config HOTPLUG_PCI_S390
bool "System z PCI Hotplug Support"
depends on S390 && 64BIT
help
Say Y here if you want to use the System z PCI Hotplug
driver for PCI devices. Without this driver it is not
possible to access stand-by PCI functions nor to deconfigure
PCI functions.
When in doubt, say Y.
endif # HOTPLUG_PCI