forked from Minki/linux
77eafe101a
This patch adds support for handling IO Event interrupts which come through at the /event-sources/ibm,io-events device tree node. The interrupts come through ibm,io-events device tree node are generated by the firmware to report IO events. The firmware uses the same interrupt to report multiple types of events for multiple devices. Each device may have its own event handler. This patch implements a plateform interrupt handler that is triggered by the IO event interrupts come through ibm,io-events device tree node, pull in the IO events from RTAS and call device event handlers registered in the notifier list. Device event handlers are expected to use atomic_notifier_chain_register() and atomic_notifier_chain_unregister() to register/unregister their event handler in pseries_ioei_notifier_list list with IO event interrupt. Device event handlers are responsible to identify if the event belongs to the device event handler. The device event handle should return NOTIFY_OK after the event is handled if the event belongs to the device event handler, or NOTIFY_DONE otherwise. Signed-off-by: Tseng-Hui (Frank) Lin <thlin@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
121 lines
3.7 KiB
Plaintext
121 lines
3.7 KiB
Plaintext
config PPC_PSERIES
|
|
depends on PPC64 && PPC_BOOK3S
|
|
bool "IBM pSeries & new (POWER5-based) iSeries"
|
|
select MPIC
|
|
select PCI_MSI
|
|
select PPC_XICS
|
|
select PPC_ICP_NATIVE
|
|
select PPC_ICP_HV
|
|
select PPC_ICS_RTAS
|
|
select PPC_I8259
|
|
select PPC_RTAS
|
|
select PPC_RTAS_DAEMON
|
|
select RTAS_ERROR_LOGGING
|
|
select PPC_UDBG_16550
|
|
select PPC_NATIVE
|
|
select PPC_PCI_CHOICE if EXPERT
|
|
default y
|
|
|
|
config PPC_SPLPAR
|
|
depends on PPC_PSERIES
|
|
bool "Support for shared-processor logical partitions"
|
|
default n
|
|
help
|
|
Enabling this option will make the kernel run more efficiently
|
|
on logically-partitioned pSeries systems which use shared
|
|
processors, that is, which share physical processors between
|
|
two or more partitions.
|
|
|
|
config EEH
|
|
bool "PCI Extended Error Handling (EEH)" if EXPERT
|
|
depends on PPC_PSERIES && PCI
|
|
default y if !EXPERT
|
|
|
|
config PSERIES_MSI
|
|
bool
|
|
depends on PCI_MSI && EEH
|
|
default y
|
|
|
|
config PSERIES_ENERGY
|
|
tristate "pSeries energy management capabilities driver"
|
|
depends on PPC_PSERIES
|
|
default y
|
|
help
|
|
Provides interface to platform energy management capabilities
|
|
on supported PSERIES platforms.
|
|
Provides: /sys/devices/system/cpu/pseries_(de)activation_hint_list
|
|
and /sys/devices/system/cpu/cpuN/pseries_(de)activation_hint
|
|
|
|
config SCANLOG
|
|
tristate "Scanlog dump interface"
|
|
depends on RTAS_PROC && PPC_PSERIES
|
|
|
|
config IO_EVENT_IRQ
|
|
bool "IO Event Interrupt support"
|
|
depends on PPC_PSERIES
|
|
default y
|
|
help
|
|
Select this option, if you want to enable support for IO Event
|
|
interrupts. IO event interrupt is a mechanism provided by RTAS
|
|
to return information about hardware error and non-error events
|
|
which may need OS attention. RTAS returns events for multiple
|
|
event types and scopes. Device drivers can register their handlers
|
|
to receive events.
|
|
|
|
This option will only enable the IO event platform code. You
|
|
will still need to enable or compile the actual drivers
|
|
that use this infrastruture to handle IO event interrupts.
|
|
|
|
Say Y if you are unsure.
|
|
|
|
config LPARCFG
|
|
bool "LPAR Configuration Data"
|
|
depends on PPC_PSERIES || PPC_ISERIES
|
|
help
|
|
Provide system capacity information via human readable
|
|
<key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
|
|
|
|
config PPC_PSERIES_DEBUG
|
|
depends on PPC_PSERIES && PPC_EARLY_DEBUG
|
|
bool "Enable extra debug logging in platforms/pseries"
|
|
help
|
|
Say Y here if you want the pseries core to produce a bunch of
|
|
debug messages to the system log. Select this if you are having a
|
|
problem with the pseries core and want to see more of what is
|
|
going on. This does not enable debugging in lpar.c, which must
|
|
be manually done due to its verbosity.
|
|
default y
|
|
|
|
config PPC_SMLPAR
|
|
bool "Support for shared-memory logical partitions"
|
|
depends on PPC_PSERIES
|
|
select LPARCFG
|
|
default n
|
|
help
|
|
Select this option to enable shared memory partition support.
|
|
With this option a system running in an LPAR can be given more
|
|
memory than physically available and will allow firmware to
|
|
balance memory across many LPARs.
|
|
|
|
config CMM
|
|
tristate "Collaborative memory management"
|
|
depends on PPC_SMLPAR
|
|
default y
|
|
help
|
|
Select this option, if you want to enable the kernel interface
|
|
to reduce the memory size of the system. This is accomplished
|
|
by allocating pages of memory and put them "on hold". This only
|
|
makes sense for a system running in an LPAR where the unused pages
|
|
will be reused for other LPARs. The interface allows firmware to
|
|
balance memory across many LPARs.
|
|
|
|
config DTL
|
|
bool "Dispatch Trace Log"
|
|
depends on PPC_SPLPAR && DEBUG_FS
|
|
help
|
|
SPLPAR machines can log hypervisor preempt & dispatch events to a
|
|
kernel buffer. Saying Y here will enable logging these events,
|
|
which are accessible through a debugfs file.
|
|
|
|
Say N if you are unsure.
|