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25ebc45b93
linux/arch/powerpc/platforms/pseries
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Nishanth Aravamudan 25ebc45b93 powerpc/pseries/iommu: remove default window before attempting DDW manipulation 
An upcoming release of firmware will add DDW extensions, in particular
an API to "reset" the DMA window to the original configuration (32-bit,
2GB in size). With that API available, we can safely remove the default
window, increasing the resources available to firmware for creation of
larger windows for the slot in question -- if we encounter an error, we
can use the new API to reset the state of the slot.

Further, this same release of firmware will make it a hard requirement
for OSes to release the existing window before any other windows will be
shown as available, to avoid conflicts in addressing between the two
windows.

In anticipation of these changes, always remove the default window
before we do any DDW manipulations.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-07-03 14:14:39 +10:00
..
cmm.c power: cmm - convert sysdev_class to a regular subsystem 2011-12-21 15:09:51 -08:00
dlpar.c powerpc/pseries: Avoid spurious error during hotplug CPU add 2011-09-20 09:20:00 +10:00
dtl.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
eeh_cache.c powerpc/eeh: Replace pci_dn with eeh_dev for EEH address cache 2012-03-09 11:39:42 +11:00
eeh_dev.c powerpc/eeh: Remove eeh device from OF node 2012-03-28 11:31:57 +11:00
eeh_driver.c powerpc/eeh: Replace pci_dn with eeh_dev for EEH aux components 2012-03-09 11:39:46 +11:00
eeh_event.c powerpc/eeh: Fix use of set_current_state() in eeh event handling set_current_state() wart 2012-04-02 14:31:19 +10:00
eeh_pseries.c powerpc/eeh: pseries platform config space access in EEH 2012-03-09 11:39:51 +11:00
eeh_sysfs.c powerpc/eeh: Replace pci_dn with eeh_dev for EEH sysfs 2012-03-09 11:39:40 +11:00
eeh.c powerpc: Use WARN instead of dump_stack when printing EEH error backtrace 2012-04-30 15:37:27 +10:00
event_sources.c powerpc/pseries: Add WARN_ON() to request_event_sources_irqs() on irq allocation/request failure 2010-07-09 11:28:32 +10:00
firmware.c powerpc: Add VPHN firmware feature 2010-11-29 15:48:22 +11:00
hotplug-cpu.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
hotplug-memory.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-07-25 22:59:39 -07:00
hvCall_inst.c powerpc: Fix unpaired probe_hcall_entry and probe_hcall_exit 2012-01-03 12:09:27 +11:00
hvCall.S powerpc: Fix unpaired __trace_hcall_entry and __trace_hcall_exit 2012-01-11 12:50:26 +11:00
hvconsole.c powerpc: convert hvconsole.c to export.h ; fix implicit use of errno.h 2011-10-31 19:30:43 -04:00
hvcserver.c
io_event_irq.c powerpc: Make function that parses RTAS error logs global 2012-03-28 11:31:58 +11:00
iommu.c powerpc/pseries/iommu: remove default window before attempting DDW manipulation 2012-07-03 14:14:39 +10:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-05-22 19:22:50 -07:00
kexec.c powerpc/pseries: Simplify vpa deregistration functions 2011-08-05 14:47:58 +10:00
lpar.c powerpc: Remove FW_FEATURE ISERIES from arch code 2012-03-21 11:16:11 +11:00
Makefile powerpc/eeh: Introduce EEH device 2012-03-09 11:39:29 +11:00
mobility.c powerpc: Fix up implicit stat.h users 2011-10-31 19:30:39 -04:00
msi.c powerpc/eeh: Cleanup function names in the EEH core 2012-03-09 11:08:37 +11:00
nvram.c kmsg - kmsg_dump() use iterator to receive log buffer content 2012-06-15 14:53:59 -07:00
offline_states.h powerpc/smp: soft-replugged CPUs must go back to start_secondary 2011-04-01 15:37:09 +11:00
pci_dlpar.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
pci.c [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
plpar_wrappers.h powerpc: Clean up lppaca->cede_latency_hint 2012-04-30 15:37:15 +10:00
power.c [POWERPC] Fix warning in pseries/power.c 2008-02-20 13:33:37 +11:00
processor_idle.c powerpc: check_and_cede_processor() never cedes 2012-06-29 14:35:37 +10:00
pseries_energy.c cpu: convert 'cpu' and 'machinecheck' sysdev_class to a regular subsystem 2011-12-21 14:29:42 -08:00
pseries.h powerpc/cpuidle: cpuidle driver for pSeries 2011-12-08 13:56:31 +11:00
ras.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
reconfig.c powerpc/pseries: Add pseries update notifier for OFDT prop changes 2012-05-14 10:49:06 +10:00
scanlog.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
setup.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci 2012-03-23 14:02:12 -07:00
smp.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
suspend.c powerpc/pseries: Fix partition migration hang in stop_topology_update 2012-02-14 15:01:39 +11:00