s390/pci: PCI hotplug support via SCLP

Add SCLP PCI configure/deconfigure and implement a PCI hotplug
controller (s390_pci_hpc). The hotplug controller creates a slot
for every PCI function in stand-by or configured state. The PCI
functions are named after the PCI function ID (fid). By writing to
the power attribute in /sys/bus/pci/slots/<fid>/power the PCI function
is moved to stand-by or configured state. If moved to the configured
state the device is automatically scanned by the s390 PCI layer.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index c459cd4e39c2..47ec8c80e16d 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_HOTPLUG_PCI_RPA)		+= rpaphp.o
 obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR)     += rpadlpar_io.o
 obj-$(CONFIG_HOTPLUG_PCI_SGI)           += sgi_hotplug.o
 obj-$(CONFIG_HOTPLUG_PCI_ACPI)          += acpiphp.o
+obj-$(CONFIG_HOTPLUG_PCI_S390)          += s390_pci_hpc.o
 
 # acpiphp_ibm extends acpiphp, so should be linked afterwards.