The ASPEED AST2400, and AST2500 in some configurations include a
PCI-to-AHB MMIO bridge. This bridge allows a server to read and write
in the BMC's physical address space. This feature is especially useful
when using this bridge to send large files to the BMC.
The host may use this to send down a firmware image by staging data at a
specific memory address, and in a coordinated effort with the BMC's
software stack and kernel, transmit the bytes.
This driver enables the BMC to unlock the PCI bridge on demand, and
configure it via ioctl to allow the host to write bytes to an agreed
upon location. In the primary use-case, the region to use is known
apriori on the BMC, and the host requests this information. Once this
request is received, the BMC's software stack will enable the bridge and
the region and then using some software flow control (possibly via IPMI
packets), copy the bytes down. Once the process is complete, the BMC
will disable the bridge and unset any region involved.
The default behavior of this bridge when present is: enabled and all
regions marked read-write. This driver will fix the regions to be
read-only and then disable the bridge entirely.
The memory regions protected are:
* BMC flash MMIO window
* System flash MMIO windows
* SOC IO (peripheral MMIO)
* DRAM
The DRAM region itself is all of DRAM and cannot be further specified.
Once the PCI bridge is enabled, the host can read all of DRAM, and if
the DRAM section is write-enabled, then it can write to all of it.
Signed-off-by: Patrick Venture <venture@google.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
During hard-reset, contexts are closed as part of the tear-down process.
After a context is closed, the driver cleans up the page tables of that
context in the device's DRAM. This action is both dangerous and
unnecessary.
It is unnecessary, because the device is going through a hard-reset, which
means the device's DRAM contents are no longer valid and the device's MMU
is being reset.
It is dangerous, because if the hard-reset came as a result of a PCI
freeze, this action may cause the entire host machine to hang.
Therefore, prevent all device PTE updates when a hard-reset operation is
pending.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch makes some improvement in how IOCTLs behave when the device is
disabled or under reset.
The new code checks, at the start of every IOCTL, if the device is
disabled or in reset. If so, it prints an appropriate kernel message and
returns -EBUSY to user-space.
In addition, the code modifies the location of where the
hard_reset_pending flag is being set or cleared:
1. It is now cleared immediately after the reset *tear-down* flow is
finished but before the re-initialization flow begins.
2. It is being set in the remove function of the device, to make the
behavior the same with the hard-reset flow
There are two exceptions to the disable or in reset check:
1. The HL_INFO_DEVICE_STATUS opcode in the INFO IOCTL. This opcode allows
the user to inquire about the status of the device, whether it is
operational, in reset or malfunction (disabled). If the driver will
block this IOCTL, the user won't be able to retrieve the status in
case of malfunction or in reset.
2. The WAIT_FOR_CS IOCTL. This IOCTL allows the user to inquire about the
status of a CS. We want to allow the user to continue to do so, even if
we started a soft-reset process because it will allow the user to get
the correct error code for each CS he submitted.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch fixes a bug in the implementation of the function that removes
the device.
The bug can happen when the device is removed but not the driver itself
(e.g. remove by the OS due to PCI freeze in Power architecture).
In that case, there maybe open users that are calling IOCTLs while the
device is removed. This is a possible race condition that the driver must
handle. Otherwise, a kernel panic may occur.
This race is prevented in the hard-reset flow, because the driver makes
sure the users are closed before continuing with the hard-reset. This
race can not occur when the driver itself is removed because the OS makes
sure all the file descriptors are closed.
The fix is to make sure the open users close their file descriptors and if
they don't (after a certain amount of time), the driver sends them a
SIGKILL, because the remove of the device can't be stopped.
The patch re-uses the same code that is called from the hard-reset flow.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
To make the memory ioctl code more readable, this patch moves the
legacy/debug code path of mmu-disabled to a separate function, which is
called (if necessary) from the main memory ioctl function.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch removes the enum value of ASIC_AUTO_DETECT because we can use
the validity of the pdev variable to know whether we have a real device or
a simulator. For a real device, we detect the asic type from the device ID
while for a simulator, the simulator code calls create_hdev() with the
specified ASIC type.
Set ASIC_INVALID as the first option in the enum to make sure that no
other enum value will receive the value 0 (which indicates a non-existing
entry in the simulator array).
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
There be should check return value from dma_set_mask to throw some info
if fail to set dma mask.
Detected by CoverityScan, CID# 1443983: Error handling issues (CHECKED_RETURN)
Fixes: f6f9279f2b ("misc: fastrpc: Add Qualcomm fastrpc basic driver model")
Signed-off-by: Bo YU <tsu.yubo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch does some refactoring in goya.c to make code more reusable
between goya code and the goya simulator code (which is not upstreamed).
In addition, the patch removes some dead functions from goya.c which are
not used by the current upstream code
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch adds the ASIC-specific function for GOYA to configure the
coresight components.
Most of the components have an enabled/disabled flag, depending on whether
the user wants to enable the component or disable it.
For some of the components, such as ETR and SPMU, the user can also
request to read values from them. Those values are needed for the user to
parse the trace data.
The ETR configuration is also checked for security purposes, to make sure
the trace data is written to the device's DRAM.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Habanalabs ASICs use the ARM coresight infrastructure to support debug,
tracing and profiling of neural networks topologies.
Because the coresight is configured using register writes and reads, and
some of the registers hold sensitive information (e.g. the address in
the device's DRAM where the trace data is written to), the user must go
through the kernel driver to configure this mechanism.
This patch implements the common code of the IOCTL and calls the
ASIC-specific function for the actual H/W configuration.
The IOCTL supports configuration of seven coresight components:
ETR, ETF, STM, FUNNEL, BMON, SPMU and TIMESTAMP
The user specifies which component he wishes to configure and provides a
pointer to a structure (located in its process space) that contains the
relevant configuration.
The common code copies the relevant data from the user-space to kernel
space and then calls the ASIC-specific function to do the H/W
configuration.
After the configuration is done, which is usually composed
of several IOCTL calls depending on what the user wanted to trace, the
user can start executing the topology. The trace data will be written to
the user's area in the device's DRAM.
After the tracing operation is complete, and user will call the IOCTL
again to disable the tracing operation. The user also need to read
values from registers for some of the components (e.g. the size of the
trace data in the device's DRAM). In that case, the user will provide a
pointer to an "output" structure in user-space, which the IOCTL code will
fill according the to selected component.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch removes an extra ; after the closing brackets of a while loop.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Unmapping ptes in the device MMU on Palladium can take a long time, which
can cause a kernel BUG of CPU soft lockup.
This patch minimize the chances for this bug by sleeping a little between
unmapping ptes.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
GIT does not like extra blank lines at the end of the file, so this patch
removes those lines.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Because DMA #0 is now used by the user, remove the limitation of credits
from this channel. Without this patch, this channel is pretty much
unusable due to its very low bandwidth configuration.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch adds a new opcode to INFO IOCTL that returns the device status.
This will allow users to query the device status in order to avoid sending
command submissions while device is in reset.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch allows the user to modify the TPC PLL clock relaxation value
on-the-fly in order to reduce power consumption.
To enable this, the patch removes the protection from the specific
register that controls this behavior.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
On init or context switch, set TPC clock relaxation counter
register to a golden value.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Hard-reset of our device should never fail, due to dangers of permanent
damage to the H/W.
This patch removes the last place in the reset path where the driver might
exit before doing the actual reset.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch refactors the code that is responsible to set the DMA mask for
the device.
Upon each change of the dma mask, the driver will save the new value that
was set. This is needed in order to make sure we don't try to increase the
mask a second time, in case we failed in the first time. This is
especially relevant for Power machines, as that may cause a change in
configuration of the TVT which will break the device.
Goya will first try to set the device's dma mask to 39 bits, so that the
memory that is allocated on the host machine for communication with the
device's cpu will be in a bus address which is lower then 39 bits. Later,
Goya will try to increase that mask to 48 bits, but only if setting the
mask to 39 bits was successful.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch fixes the implementation of suspend/resume of the device so that
upon resume of the device, the host won't crash due to PCI completion
timeout.
Upon suspend, the device is being reset due to PERST. Therefore, upon
resume, the driver must initialize the PCI controller as if the driver was
loaded. If the controller is not initialized and the device tries to
access the device through the PCI bars, the host will crash with PCI
completion timeout error.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch adds accounting for active CS. Active means that the CS was
submitted to the H/W queues and was not completed yet.
This is necessary to support suspend operation. Because the device will be
reset upon suspend, we can only suspend after all active CS have been
completed. Hence, we need to perform accounting on their number.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch fixes the mapping of virtual address to physical addresses on
architectures where PAGE_SIZE is bigger than 4KB.
The break down to the device page size was done only for the virtual
address while it should have been done for the physical address as well.
As a result virtual addresses were mapped to wrong physical address.
The fix is to apply the break down for the physical addresses as well in
order to get correct mappings.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch fixes a bug which led to a crash during hard reset flow.
Before a hard reset is executed, we wait a few seconds for the user
context cleanup to complete.
If it wasn't completed, we kill the user process and move on to the reset
flow.
Upon killing the user process, the context cleanup flow begins and may
take a while due to MMU unmaps.
Meanwhile, in the driver reset flow, we change the PCI DRAM bar location
which can interfere with the MMU that uses the bar.
If the context cleanup flow didn't finish quickly, a crash may occur due
to PCI DRAM bar mislocation during the MMU unmap.
Hence adding a wait between killing the user process and the start of the
reset flow.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This patch fixes a bug of allocating a too big memory size with kmalloc,
which causes a failure.
In case of mapping a large memory block, an array of the relevant physical
page addresses is allocated. If there are many pages the array might be
too big to allocate with kmalloc, hence changing to kvmalloc.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
The requested allocation size is 64bit, hence the number of requested
pages and the total requested size should 64bit as well.
This patch fixes all places where these are treated as 32bit.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This has been a slightly more active cycle than normal with ongoing core
changes and quite a lot of collected driver updates.
- Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
- A new data transfer mode for HFI1 giving higher performance
- Significant functional and bug fix update to the mlx5 On-Demand-Paging MR
feature
- A chip hang reset recovery system for hns
- Change mm->pinned_vm to an atomic64
- Update bnxt_re to support a new 57500 chip
- A sane netlink 'rdma link add' method for creating rxe devices and fixing
the various unregistration race conditions in rxe's unregister flow
- Allow lookup up objects by an ID over netlink
- Various reworking of the core to driver interface:
* Drivers should not assume umem SGLs are in PAGE_SIZE chunks
* ucontext is accessed via udata not other means
* Start to make the core code responsible for object memory
allocation
* Drivers should convert struct device to struct ib_device
via a helper
* Drivers have more tools to avoid use after unregister problems
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a slightly more active cycle than normal with ongoing
core changes and quite a lot of collected driver updates.
- Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
- A new data transfer mode for HFI1 giving higher performance
- Significant functional and bug fix update to the mlx5
On-Demand-Paging MR feature
- A chip hang reset recovery system for hns
- Change mm->pinned_vm to an atomic64
- Update bnxt_re to support a new 57500 chip
- A sane netlink 'rdma link add' method for creating rxe devices and
fixing the various unregistration race conditions in rxe's
unregister flow
- Allow lookup up objects by an ID over netlink
- Various reworking of the core to driver interface:
- drivers should not assume umem SGLs are in PAGE_SIZE chunks
- ucontext is accessed via udata not other means
- start to make the core code responsible for object memory
allocation
- drivers should convert struct device to struct ib_device via a
helper
- drivers have more tools to avoid use after unregister problems"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits)
net/mlx5: ODP support for XRC transport is not enabled by default in FW
IB/hfi1: Close race condition on user context disable and close
RDMA/umem: Revert broken 'off by one' fix
RDMA/umem: minor bug fix in error handling path
RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
cxgb4: kfree mhp after the debug print
IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
IB/rdmavt: Fix loopback send with invalidate ordering
IB/iser: Fix dma_nents type definition
IB/mlx5: Set correct write permissions for implicit ODP MR
bnxt_re: Clean cq for kernel consumers only
RDMA/uverbs: Don't do double free of allocated PD
RDMA: Handle ucontext allocations by IB/core
RDMA/core: Fix a WARN() message
bnxt_re: fix the regression due to changes in alloc_pbl
IB/mlx4: Increase the timeout for CM cache
IB/core: Abort page fault handler silently during owning process exit
IB/mlx5: Validate correct PD before prefetch MR
IB/mlx5: Protect against prefetch of invalid MR
RDMA/uverbs: Store PR pointer before it is overwritten
...
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Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Use match_string() instead of reimplementing it (Andy Shevchenko)
- Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)
- Use Latency Tolerance Reporting if already enabled by platform (Bjorn
Helgaas)
- Save/restore LTR info for suspend/resume (Bjorn Helgaas)
- Fix DPC use of uninitialized data (Dongdong Liu)
- Probe bridge window attributes only once at enumeration-time to fix
device accesses during rescan (Bjorn Helgaas)
- Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
Changbin)
- Use config header type (not class code) identify bridges more
reliably (Honghui Zhang)
- Work around Intel Denverton incorrect Trace Hub BAR size reporting
(Alexander Shishkin)
- Reorder pciehp cached state/hardware state updates to avoid missed
interrupts (Mika Westerberg)
- Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)
- Mark expected switch fall-through (Mathieu Malaterre)
- Use of_node_name_eq() for node name comparisons (Rob Herring)
- Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)
- Consolidate Rohm Vendor ID definitions (Andy Shevchenko)
- Use u32 (not __u32) for things not exposed to userspace (Logan
Gunthorpe)
- Fix locking semantics of bus and slot reset interfaces (Alex
Williamson)
- Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)
- Allow portdrv to claim subtractive decode Ports so PCIe services will
work for them (Honghui Zhang)
- Report PCIe links that become degraded at run-time (Alexandru
Gagniuc)
- Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
hotplug (Mika Westerberg)
- Revert runtime PM suspend/resume callbacks that broke PME on network
cable plug (Mika Westerberg)
- Disable Data Link State Changed interrupts to prevent wakeup
immediately after suspend (Mika Westerberg)
- Extend altera to support Stratix 10 (Ley Foon Tan)
- Allow building altera driver on ARM64 (Ley Foon Tan)
- Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
maintainer (Lorenzo Pieralisi)
- Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)
- Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)
- Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
Abraham I)
- Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)
- Simplify dwc (remove unnecessary header includes, name variables
consistently, reduce inverted logic, etc) (Gustavo Pimentel)
- Add i.MX8MQ support (Andrey Smirnov)
- Add message to help debug dwc MSI-X mask bit errors (Gustavo
Pimentel)
- Work around imx7d PCIe PLL erratum (Trent Piepho)
- Don't assert qcom reset GPIO during probe (Bjorn Andersson)
- Skip dwc MSI init if MSIs have been disabled (Lucas Stach)
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
- Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
Nakamura)
- Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
open-coded reimplementation (Maya Nakamura)
- Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)
- Fix mediatek MMIO size computation to enable full size of available
MMIO space (Honghui Zhang)
- Fix mediatek DMA window size computation to allow endpoint DMA access
to full DRAM address range (Honghui Zhang)
- Fix mvebu prefetchable BAR regression caused by common bridge
emulation that assumed all bridges had prefetchable windows (Thomas
Petazzoni)
- Make advk_pci_bridge_emul_ops static (Wei Yongjun)
- Configure MPS settings for VMD root ports (Jon Derrick)
* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
PCI: Update PCIEPORTBUS Kconfig help text
PCI: Fix "try" semantics of bus and slot reset
PCI/LINK: Report degraded links via link bandwidth notification
dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
PCI: altera: Enable driver on ARM64
PCI: altera: Add Stratix 10 PCIe support
PCI/PME: Fix possible use-after-free on remove
PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
PCI: dwc: skip MSI init if MSIs have been explicitly disabled
PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
PCI: hv: Replace hv_vp_set with hv_vpset
PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
PCI: mediatek: Fix memory mapped IO range size computation
PCI: dwc: Remove superfluous shifting in definitions
PCI: dwc: Make use of GENMASK/FIELD_PREP
PCI: dwc: Make use of BIT() in constant definitions
PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
PCI: dwc: Make use of IS_ALIGNED()
PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
...
Pull i2c updates from Wolfram Sang:
- the I2C core gained helpers to assist drivers in handling their
suspended state, and drivers were converted to use it
- two new fault-injectors for stress-testing
- bigger refactoring and feature improvements for the ocores,
sh_mobile, and tegra drivers
- platform_data removal for the at24 EEPROM driver
- ... and various improvements and bugfixes all over the subsystem
* 'i2c/for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (69 commits)
i2c: Allow recovery of the initial IRQ by an I2C client device.
i2c: ocores: turn incomplete kdoc into a comment
i2c: designware: Do not allow i2c_dw_xfer() calls while suspended
i2c: tegra: Only display error messages if DMA setup fails
i2c: gpio: fault-injector: add 'inject_panic' injector
i2c: gpio: fault-injector: add 'lose_arbitration' injector
i2c: tegra: remove multi-master support
i2c: tegra: remove master fifo support on tegra186
i2c: tegra: change phrasing, "fallbacking" to "falling back"
i2c: expand minor range when registering chrdev region
i2c: aspeed: Add multi-master use case support
i2c: core-smbus: don't trace smbus_reply data on errors
i2c: ocores: Add support for bus clock via platform data
i2c: ocores: Add support for IO mapper registers.
i2c: ocores: checkpatch fixes
i2c: ocores: add SPDX tag
i2c: ocores: add polling interface
i2c: ocores: do not handle IRQ if IF is not set
i2c: ocores: stop transfer on timeout
i2c: tegra: add i2c interface timing support
...
Notable changes:
- Enable THREAD_INFO_IN_TASK to move thread_info off the stack.
- A big series from Christoph reworking our DMA code to use more of the generic
infrastructure, as he said:
"This series switches the powerpc port to use the generic swiotlb and
noncoherent dma ops, and to use more generic code for the coherent direct
mapping, as well as removing a lot of dead code."
- Increase our vmalloc space to 512T with the Hash MMU on modern CPUs, allowing
us to support machines with larger amounts of total RAM or distance between
nodes.
- Two series from Christophe, one to optimise TLB miss handlers on 6xx, and
another to optimise the way STRICT_KERNEL_RWX is implemented on some 32-bit
CPUs.
- Support for KCOV coverage instrumentation which means we can run syzkaller
and discover even more bugs in our code.
And as always many clean-ups, reworks and minor fixes etc.
Thanks to:
Alan Modra, Alexey Kardashevskiy, Alistair Popple, Andrea Arcangeli, Andrew
Donnellan, Aneesh Kumar K.V, Aravinda Prasad, Balbir Singh, Brajeswar Ghosh,
Breno Leitao, Christian Lamparter, Christian Zigotzky, Christophe Leroy,
Christoph Hellwig, Corentin Labbe, Daniel Axtens, David Gibson, Diana Craciun,
Firoz Khan, Gustavo A. R. Silva, Igor Stoppa, Joe Lawrence, Joel Stanley,
Jonathan Neuschäfer, Jordan Niethe, Laurent Dufour, Madhavan Srinivasan, Mahesh
Salgaonkar, Mark Cave-Ayland, Masahiro Yamada, Mathieu Malaterre, Matteo Croce,
Meelis Roos, Michael W. Bringmann, Nathan Chancellor, Nathan Fontenot, Nicholas
Piggin, Nick Desaulniers, Nicolai Stange, Oliver O'Halloran, Paul Mackerras,
Peter Xu, PrasannaKumar Muralidharan, Qian Cai, Rashmica Gupta, Reza Arbab,
Robert P. J. Day, Russell Currey, Sabyasachi Gupta, Sam Bobroff, Sandipan Das,
Sergey Senozhatsky, Souptick Joarder, Stewart Smith, Tyrel Datwyler, Vaibhav
Jain, YueHaibing.
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Merge tag 'powerpc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Notable changes:
- Enable THREAD_INFO_IN_TASK to move thread_info off the stack.
- A big series from Christoph reworking our DMA code to use more of
the generic infrastructure, as he said:
"This series switches the powerpc port to use the generic swiotlb
and noncoherent dma ops, and to use more generic code for the
coherent direct mapping, as well as removing a lot of dead
code."
- Increase our vmalloc space to 512T with the Hash MMU on modern
CPUs, allowing us to support machines with larger amounts of total
RAM or distance between nodes.
- Two series from Christophe, one to optimise TLB miss handlers on
6xx, and another to optimise the way STRICT_KERNEL_RWX is
implemented on some 32-bit CPUs.
- Support for KCOV coverage instrumentation which means we can run
syzkaller and discover even more bugs in our code.
And as always many clean-ups, reworks and minor fixes etc.
Thanks to: Alan Modra, Alexey Kardashevskiy, Alistair Popple, Andrea
Arcangeli, Andrew Donnellan, Aneesh Kumar K.V, Aravinda Prasad, Balbir
Singh, Brajeswar Ghosh, Breno Leitao, Christian Lamparter, Christian
Zigotzky, Christophe Leroy, Christoph Hellwig, Corentin Labbe, Daniel
Axtens, David Gibson, Diana Craciun, Firoz Khan, Gustavo A. R. Silva,
Igor Stoppa, Joe Lawrence, Joel Stanley, Jonathan Neuschäfer, Jordan
Niethe, Laurent Dufour, Madhavan Srinivasan, Mahesh Salgaonkar, Mark
Cave-Ayland, Masahiro Yamada, Mathieu Malaterre, Matteo Croce, Meelis
Roos, Michael W. Bringmann, Nathan Chancellor, Nathan Fontenot,
Nicholas Piggin, Nick Desaulniers, Nicolai Stange, Oliver O'Halloran,
Paul Mackerras, Peter Xu, PrasannaKumar Muralidharan, Qian Cai,
Rashmica Gupta, Reza Arbab, Robert P. J. Day, Russell Currey,
Sabyasachi Gupta, Sam Bobroff, Sandipan Das, Sergey Senozhatsky,
Souptick Joarder, Stewart Smith, Tyrel Datwyler, Vaibhav Jain,
YueHaibing"
* tag 'powerpc-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (200 commits)
powerpc/32: Clear on-stack exception marker upon exception return
powerpc: Remove export of save_stack_trace_tsk_reliable()
powerpc/mm: fix "section_base" set but not used
powerpc/mm: Fix "sz" set but not used warning
powerpc/mm: Check secondary hash page table
powerpc: remove nargs from __SYSCALL
powerpc/64s: Fix unrelocated interrupt trampoline address test
powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables
powerpc/fsl: Fix the flush of branch predictor.
powerpc/powernv: Make opal log only readable by root
powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
powerpc/powernv: move OPAL call wrapper tracing and interrupt handling to C
powerpc/64s: Fix data interrupts vs d-side MCE reentrancy
powerpc/64s: Prepare to handle data interrupts vs d-side MCE reentrancy
powerpc/64s: system reset interrupt preserve HSRRs
powerpc/64s: Fix HV NMI vs HV interrupt recoverability test
powerpc/mm/hash: Handle mmap_min_addr correctly in get_unmapped_area topdown search
powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback
selftests/powerpc: Remove duplicate header
powerpc sstep: Add support for modsd, modud instructions
...
Here is the big char/misc driver patch pull request for 5.1-rc1.
The largest thing by far is the new habanalabs driver for their AI
accelerator chip. For now it is in the drivers/misc directory but will
probably move to a new directory soon along with other drivers of this
type.
Other than that, just the usual set of individual driver updates and
fixes. There's an "odd" merge in here from the DRM tree that they asked
me to do as the MEI driver is starting to interact with the i915 driver,
and it needed some coordination. All of those patches have been
properly acked by the relevant subsystem maintainers.
All of these have been in linux-next with no reported issues, most for
quite some time.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big char/misc driver patch pull request for 5.1-rc1.
The largest thing by far is the new habanalabs driver for their AI
accelerator chip. For now it is in the drivers/misc directory but will
probably move to a new directory soon along with other drivers of this
type.
Other than that, just the usual set of individual driver updates and
fixes. There's an "odd" merge in here from the DRM tree that they
asked me to do as the MEI driver is starting to interact with the i915
driver, and it needed some coordination. All of those patches have
been properly acked by the relevant subsystem maintainers.
All of these have been in linux-next with no reported issues, most for
quite some time"
* tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits)
habanalabs: adjust Kconfig to fix build errors
habanalabs: use %px instead of %p in error print
habanalabs: use do_div for 64-bit divisions
intel_th: gth: Fix an off-by-one in output unassigning
habanalabs: fix little-endian<->cpu conversion warnings
habanalabs: use NULL to initialize array of pointers
habanalabs: fix little-endian<->cpu conversion warnings
habanalabs: soft-reset device if context-switch fails
habanalabs: print pointer using %p
habanalabs: fix memory leak with CBs with unaligned size
habanalabs: return correct error code on MMU mapping failure
habanalabs: add comments in uapi/misc/habanalabs.h
habanalabs: extend QMAN0 job timeout
habanalabs: set DMA0 completion to SOB 1007
habanalabs: fix validation of WREG32 to DMA completion
habanalabs: fix mmu cache registers init
habanalabs: disable CPU access on timeouts
habanalabs: add MMU DRAM default page mapping
habanalabs: Dissociate RAZWI info from event types
misc/habanalabs: adjust Kconfig to fix build errors
...
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
* remotes/lorenzo/pci/endpoint:
misc: pci_endpoint_test: Add the layerscape EP device support
PCI: layerscape: Add EP mode support
arm64: dts: Add the PCIE EP node in dts
dt-bindings: add DT binding for the layerscape PCIe controller with EP mode
PCI: endpoint: Remove features member in struct pci_epc
PCI: designware-plat: Remove setting epc->features in Designware plat EP driver
PCI: rockchip: Remove pci_epf_linkup() from Rockchip EP driver
PCI: cadence: Remove pci_epf_linkup() from Cadence EP driver
PCI: pci-epf-test: Use pci_epc_get_features() to get EPC features
PCI: pci-epf-test: Do not allocate next BARs memory if current BAR is 64Bit
PCI: pci-epf-test: Remove setting epf_bar flags in function driver
PCI: endpoint: Fix pci_epf_alloc_space() to set correct MEM TYPE flags
PCI: endpoint: Add helper to get first unreserved BAR
PCI: cadence: Populate ->get_features() cdns_pcie_epc_ops
PCI: rockchip: Populate ->get_features() dw_pcie_ep_ops
PCI: pci-dra7xx: Populate ->get_features() dw_pcie_ep_ops
PCI: designware-plat: Populate ->get_features() dw_pcie_ep_ops
PCI: dwc: Add ->get_features() callback function to dw_pcie_ep_ops
PCI: endpoint: Add new pci_epc_ops to get EPC features
PCI: endpoint: functions: Use memcpy_fromio()/memcpy_toio()
Patch series "Replace all open encodings for NUMA_NO_NODE", v3.
All these places for replacement were found by running the following
grep patterns on the entire kernel code. Please let me know if this
might have missed some instances. This might also have replaced some
false positives. I will appreciate suggestions, inputs and review.
1. git grep "nid == -1"
2. git grep "node == -1"
3. git grep "nid = -1"
4. git grep "node = -1"
This patch (of 2):
At present there are multiple places where invalid node number is
encoded as -1. Even though implicitly understood it is always better to
have macros in there. Replace these open encodings for an invalid node
number with the global macro NUMA_NO_NODE. This helps remove NUMA
related assumptions like 'invalid node' from various places redirecting
them to a common definition.
Link: http://lkml.kernel.org/r/1545127933-10711-2-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> [ixgbe]
Acked-by: Jens Axboe <axboe@kernel.dk> [mtip32xx]
Acked-by: Vinod Koul <vkoul@kernel.org> [dmaengine.c]
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Acked-by: Doug Ledford <dledford@redhat.com> [drivers/infiniband]
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
[david@redhat.com: use vmballoon_page_in_frames more widely]
Link: http://lkml.kernel.org/r/20181122100627.5189-7-david@redhat.com
Link: http://lkml.kernel.org/r/20181119101616.8901-7-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Nadav Amit <namit@vmware.com>
Cc: Xavier Deguillard <xdeguillard@vmware.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Julien Freche <jfreche@vmware.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Christian Hansen <chansen3@cisco.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kairui Song <kasong@redhat.com>
Cc: Kazuhito Hagio <k-hagio@ab.jp.nec.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Lianbo Jiang <lijiang@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Miles Chen <miles.chen@mediatek.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Omar Sandoval <osandov@fb.com>
Cc: Pankaj gupta <pagupta@redhat.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The driver use the HWMON framework to display various sensors information.
Therefore, CONFIG_HWMON must be included to prevent build errors.
This patch adds "select HWMON" to the driver's Kconfig file to make sure
HWMON is built. In addition, to avoid breaking dependencies, it adds
dependency on HAS_IOMEM because HWMON is dependent on HAS_IOMEM.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When parsing the address of an internal command buffer, the driver prints
an error if the buffer's address is not in the range of the device's DRAM
or SRAM memory address space.
Use %px to print the real address that the user gave the driver and not a
hashed value, so the user will get a clue regarding the origin of his
error.
Note that if the print occurs, the pointer that is printed is a
user's virtual address and not some kind of physical address.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix compilation error in 32-bit ARM architecture regarding
division of 2 64-bit variables.
Use the kernel do_div() macro, which is implemented per architecture, for
doing these divisions instead of using the / operator.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add __cpu_to_le16/32/64 and __le16/32/64_to_cpu where needed according to
sparse.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the following sparse warnings:
drivers/misc/habanalabs/hwmon.c:20:56: warning: Using plain integer as NULL pointer
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug in the driver, where if the TPC or MME remains in
non-IDLE even after all the command submissions are done (due to user bug
or malicious user), then future command submissions will fail in the
context-switch stage and the driver will remain in "stuck" mode.
The fix is to do a soft-reset of the device in case the context-switch
fails, because the device should be IDLE during context-switch. If it is
not IDLE, then something is wrong and we should reset the compute engines.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't cast pointer to u64 to print it. Instead, print the pointer using
%p.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug when a command buffer with unaligned size (with
regard to PAGE_SIZE) was used. The accounting for the unmap operation
wasn't done correctly and could result in a memory leak.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug where EINVAL was returned instead of -EINVAL.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug where the timeout for sending a job on QMAN0 by KMD
wasn't enough in palladium environment.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug where DMA channel 0 completion address wasn't
initialized by the driver.
The patch sets the address to Sync Object no. 1007
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix a bug in the validation of WREG32 in DMA queues. The
validation was too strict. It allowed the user to set the completion
address only for DMA channel 1.
The fix allows the user to set the completion address for all 5 DMA
channels.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fix an incorrect initialization of the MMU cache registers. The
shift operation was done in the wrong direction.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
