When a default page-size for given level should be mapped,
the level encoding must be 0 rather than 7. This fixes an
issue seen on IOMMUv2 hardware, where this encoding is
enforced.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Now that fetch_pte returns the page-size of the pte, this
function can be optimized too.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Now that fetch_pte returns the page-size of the pte, the
call in this function can also be optimized a little bit.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Now that fetch_pte returns the page-size of the pte, this
function can be optimized a lot.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Extend the fetch_pte function to also return the page-size
that is mapped by the returned pte.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Add code to allocate memory from the contiguous memory
allocator to support coherent allocations larger than 8MB.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Don't explicitly add __GFP_ZERO to the allocator flags.
Leave this up to the caller.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Detaching a device from its domain at this event is
problematic for several reasons:
* The device might me in an alias group and
detaching it will also detach all other devices in
the group. This removes valid DMA mappings from
the other devices causing io-page-faults and lets
these devices fail.
* Devices might have unity mappings specified by the
IVRS table. These mappings are required for the
device even when no device driver is attached.
Detaching the device from its domain in driver
unbind will also remove these unity mappings.
This patch removes the handling of the BUS_NOTIFY_UNBOUND_DRIVER
event to prevent these issues and align it better with the
behavior of the VT-d driver.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Use the new device-notifier event instead of the old
BUS_NOTIFY_DEL_DEVICE to make sure the device driver had a
chance to uninit the device before all its mappings are
teared down.
Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The SMMU on Tegra30 and Tegra114 supports addressing up to 4 GiB of
physical memory. On Tegra124 the addressable physical memory was
extended to 16 GiB. The page frame number stored in PTEs therefore
requires 20 or 22 bits, depending on SoC generation.
In order to cope with this, compute the proper value at runtime.
Reported-by: Joseph Lo <josephl@nvidia.com>
Cc: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The aperture of the domain should always be available, otherwise drivers
need to attach first before they can use the aperture geometry.
Cc: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Each address space in the Tegra SMMU provides 4 GiB worth of addresses.
Cc: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
All drivers have been converted to the new domain_alloc and
domain_free iommu-ops. So remove the old ones and get rid of
iommu_domain->priv too, as this is no longer needed when the
struct iommu_domain is embedded in the private structures of
the iommu drivers.
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Implement domain_alloc and domain_free iommu-ops as a
replacement for domain_init/domain_destroy.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Get rid of domain_init and domain_destroy and implement
domain_alloc/domain_free instead.
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Implement the new iommu-ops function pointers and remove the
obsolete domain_init and domain_destroy functions.
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Check for the new __IOMMU_DOMAIN_PAGING flag before calling
into the iommu drivers ->map and ->unmap call-backs.
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This allows to handle domains differently based on their
type in the future. An IOMMU driver can implement certain
optimizations for DMA-API domains for example.
The domain types can be extended later and some of the
existing domain attributes can be migrated to become domain
flags.
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
These new call-backs defer the allocation and destruction of
'struct iommu_domain' to the iommu driver. This allows
drivers to embed this struct into their private domain
structures and to get rid of the domain_init and
domain_destroy call-backs when all drivers have been
converted.
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The latest and greatest fixes for ARM platform code. Worth pointing out are:
- Lines-wise, largest is a PXA fix for dealing with interrupts on DT that was
quite broken. It's still newish code so while we could have held this off,
it seemed appropriate to include now
- Some GPIO fixes for OMAP platforms added a few lines. This was also fixes for
code recently added (this release).
- Small OMAP timer fix to behave better with partially upstreamed platforms,
which is quite welcome.
- Allwinner fixes about operating point control, reducing overclocking in some
cases for better stability.
+ a handful of other smaller fixes across the map.
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Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The latest and greatest fixes for ARM platform code. Worth pointing
out are:
- Lines-wise, largest is a PXA fix for dealing with interrupts on DT
that was quite broken. It's still newish code so while we could
have held this off, it seemed appropriate to include now
- Some GPIO fixes for OMAP platforms added a few lines. This was
also fixes for code recently added (this release).
- Small OMAP timer fix to behave better with partially upstreamed
platforms, which is quite welcome.
- Allwinner fixes about operating point control, reducing
overclocking in some cases for better stability.
plus a handful of other smaller fixes across the map"
* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: juno: Fix misleading name of UART reference clock
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: socfpga: dts: fix spi1 interrupt
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
ARM: dts: rockchip: disable gmac by default in rk3288.dtsi
MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.
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Merge tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes
Allwinner fixes for 4.0
There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.
* tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix a device tree based booting vs legacy booting regression for
omap3 crypto hardware by adding the missing DMA channels.
- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.
- Fix two timer issues that can cause hangs if the timer related
hwmod data is missing like it often initially is for new SoCs.
- Remove pcie hwmods entry from dts as that causes runtime PM to
fail for the PHYs.
- A paper bag type dts configuration fix for dm816x GPIO
interrupts that I just noticed. This is most of the changes
diffstat wise, but as it's a basic feature for connecting
devices and things work otherwise, it should be fixed.
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Merge tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omaps for the -rc cycle:
- Fix a device tree based booting vs legacy booting regression for
omap3 crypto hardware by adding the missing DMA channels.
- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.
- Fix two timer issues that can cause hangs if the timer related
hwmod data is missing like it often initially is for new SoCs.
- Remove pcie hwmods entry from dts as that causes runtime PM to
fail for the PHYs.
- A paper bag type dts configuration fix for dm816x GPIO
interrupts that I just noticed. This is most of the changes
diffstat wise, but as it's a basic feature for connecting
devices and things work otherwise, it should be fixed.
* tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix interrupt number for SPI1 interface
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Merge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next into fixes
Late fix for v4.0 on the SoCFPGA platform:
- Fix interrupt number for SPI1 interface
* tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next:
ARM: socfpga: dts: fix spi1 interrupt
Signed-off-by: Olof Johansson <olof@lixom.net>
The UART reference clock speed is 7273.8 kHz, not 72738 kHz.
Dots aren't usually used in node names even though ePAPR permits
them. However, this can easily be avoided by expressing the
frequency in Hz, not kHz.
This patch changes the name to refclk7273800hz, reflecting the
actual clock speed.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.
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Merge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes
arm: pxa: fixes for v4.0-rc5
There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.
* tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux:
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull x86 fix from Ingo Molnar:
"Fix x86 syscall exit code bug that resulted in spurious non-execution
of TIF-driven user-return worklets, causing big trouble for things
like KVM that rely on user notifiers for correctness of their vcpu
model, causing crashes like double faults"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm/entry: Check for syscall exit work with IRQs disabled
Pull scheduler fix from Ingo Molnar:
"A single sched/rt corner case fix for RLIMIT_RTIME correctness"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix RLIMIT_RTTIME when PI-boosting to RT
Pull perf fix from Ingo Molnar:
"A perf kernel side fix for a fuzzer triggered lockup"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix irq_work 'tail' recursion
Pull locking fix from Ingo Molnar:
"A module unload lockdep race fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Fix the module unload key range freeing logic
Pull parsic fixes from Helge Deller:
"One patch from Mikulas fixes a bug on parisc by artifically
incrementing the counter in pmd_free when the kernel tries to free
the preallocated pmd.
Other than that we now prevent that syscalls gets added without
incrementing __NR_Linux_syscalls and fix the initial pmd setup code
if a default page size greater than 4k has been selected"
* 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
parisc: mm: don't count preallocated pmds
parisc: Add compile-time check when adding new syscalls
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Merge tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
"We found some issues with signal handling taking down the system. I
know its late, but these are important and all marked for stable.
ARC signal handling related fixes uncovered during recent testing of
NPTL tools"
* tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: signal handling robustify
ARC: SA_SIGINFO ucontext regs off-by-one
Pull selinux bugfix from James Morris.
Fix broken return value.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix sel_write_enforce broken return value
Three trivial oneliner fixes for HD-audio. Two are device-specific
quirks while one is a generic fix for recent Realtek codecs.
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Merge tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Three trivial oneliner fixes for HD-audio.
Two are device-specific quirks while one is a generic fix for recent
Realtek codecs"
* tag 'sound-4.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Add one more node in the EAPD supporting candidate list
ALSA: hda_intel: apply the Seperate stream_tag for Sunrise Point
ALSA: hda - Add dock support for Thinkpad T450s (17aa:5036)
Although we set TCR.T1SZ to 0, the input address range covered by TTBR1
is actually calculated using T0SZ in this case on the ARM SMMU. This
could theoretically lead to speculative table walks through physical
address zero, leading to all sorts of fun and games if we have MMIO
regions down there.
This patch avoids the issue by setting EPD1 to disable walks through
the unused TTBR1 register.
Signed-off-by: Will Deacon <will.deacon@arm.com>
IOMMU groups for PCI devices can correspond to multiple DMA aliases due
to things like ACS and PCI quirks.
This patch extends the ARM SMMU ->add_device callback so that we
consider all of the DMA aliases for a PCI IOMMU group, rather than
creating a separate group for each Requester ID.
Signed-off-by: Will Deacon <will.deacon@arm.com>
