linux-toradex.git/include/misc, branch v5.1-rc1

Revert "cxl: Allow a default context to be associated with an external pci_dev"

2018-07-02T13:54:33+00:00

Remove abandonned capi support for the Mellanox CX4.

This reverts commit a19bd79e31769626d288cc016e21a31b6f47bf6f.

Signed-off-by: Frederic Barrat 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Revert "cxl: Add cxl_slot_is_supported API"

2018-07-02T13:54:32+00:00

Remove abandonned capi support for the Mellanox CX4.

This reverts commit 4e56f858bdde5cbfb70f61baddfaa56a8ed851bf.

Signed-off-by: Frederic Barrat 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Revert "cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards"

2018-07-02T13:54:31+00:00

Remove abandonned capi support for the Mellanox CX4.

This reverts commit b0b5e5918ad1babfd1d43d98c7281926a7b57b9f.

Signed-off-by: Alastair D'Silva 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Revert "cxl: Add preliminary workaround for CX4 interrupt limitation"

2018-07-02T13:54:31+00:00

Remove abandonned capi support for the Mellanox CX4.

This reverts commit cbce0917e2e47d4bf5aa3b5fd6b1247f33e1a126.

Signed-off-by: Alastair D'Silva 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Revert "cxl: Add support for interrupts on the Mellanox CX4"

2018-07-02T13:54:30+00:00

Remove abandonned capi support for the Mellanox CX4.

This reverts commit a2f67d5ee8d950caaa7a6144cf0bfb256500b73e.

Signed-off-by: Alastair D'Silva 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Revert "cxl: Add kernel API to allow a context to operate with relocate disabled"

2018-07-02T13:54:30+00:00

Remove abandonned capi support for the Mellanox CX4.
The symbol 'cxl_set_translation_mode' is never called, so
ctx->real_mode is always false.

This reverts commit 7a0d85d313c2066712e530e668bc02bb741a685c.

Signed-off-by: Alastair D'Silva 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

ocxl: Expose the thread_id needed for wait on POWER9

2018-06-03T10:40:32+00:00

In order to successfully issue as_notify, an AFU needs to know the TID
to notify, which in turn means that this information should be
available in userspace so it can be communicated to the AFU.

Signed-off-by: Alastair D'Silva 
Acked-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman

Merge tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2018-02-02T18:01:04+00:00

Pull powerpc updates from Michael Ellerman:
 "Highlights:

   - Enable support for memory protection keys aka "pkeys" on Power7/8/9
     when using the hash table MMU.

   - Extend our interrupt soft masking to support masking PMU interrupts
     as well as "normal" interrupts, and then use that to implement
     local_t for a ~4x speedup vs the current atomics-based
     implementation.

   - A new driver "ocxl" for "Open Coherent Accelerator Processor
     Interface (OpenCAPI)" devices.

   - Support for new device tree properties on PowerVM to describe
     hotpluggable memory and devices.

   - Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 64-bit
     VDSO.

   - Freescale updates from Scott: fixes for CPM GPIO and an FSL PCI
     erratum workaround, plus a minor cleanup patch.

  As well as quite a lot of other changes all over the place, and small
  fixes and cleanups as always.

  Thanks to: Alan Modra, Alastair D'Silva, Alexey Kardashevskiy,
  Alistair Popple, Andreas Schwab, Andrew Donnellan, Aneesh Kumar K.V,
  Anju T Sudhakar, Anshuman Khandual, Anton Blanchard, Arnd Bergmann,
  Balbir Singh, Benjamin Herrenschmidt, Bhaktipriya Shridhar, Bryant G.
  Ly, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Cyril Bur,
  David Gibson, Desnes A. Nunes do Rosario, Dmitry Torokhov, Frederic
  Barrat, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo A. R. Silva,
  Gustavo Romero, Ivan Mikhaylov, Joakim Tjernlund, Joe Perches, Josh
  Poimboeuf, Juan J. Alvarez, Julia Cartwright, Kamalesh Babulal,
  Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Malaterre, Michael
  Bringmann, Michael Hanselmann, Michael Neuling, Nathan Fontenot,
  Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Philippe Bergheaud,
  Ram Pai, Russell Currey, Santosh Sivaraj, Scott Wood, Seth Forshee,
  Simon Guo, Stewart Smith, Sukadev Bhattiprolu, Thiago Jung Bauermann,
  Vaibhav Jain, Vasyl Gomonovych"

* tag 'powerpc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (199 commits)
  powerpc/mm/radix: Fix build error when RADIX_MMU=n
  macintosh/ams-input: Use true and false for boolean values
  macintosh: change some data types from int to bool
  powerpc/watchdog: Print the NIP in soft_nmi_interrupt()
  powerpc/watchdog: regs can't be null in soft_nmi_interrupt()
  powerpc/watchdog: Tweak watchdog printks
  powerpc/cell: Remove axonram driver
  rtc-opal: Fix handling of firmware error codes, prevent busy loops
  powerpc/mpc52xx_gpt: make use of raw_spinlock variants
  macintosh/adb: Properly mark continued kernel messages
  powerpc/pseries: Fix cpu hotplug crash with memoryless nodes
  powerpc/numa: Ensure nodes initialized for hotplug
  powerpc/numa: Use ibm,max-associativity-domains to discover possible nodes
  powerpc/kernel: Block interrupts when updating TIDR
  powerpc/powernv/idoa: Remove unnecessary pcidev from pci_dn
  powerpc/mm/nohash: do not flush the entire mm when range is a single page
  powerpc/pseries: Add Initialization of VF Bars
  powerpc/pseries/pci: Associate PEs to VFs in configure SR-IOV
  powerpc/eeh: Add EEH notify resume sysfs
  powerpc/eeh: Add EEH operations to notify resume
  ...

ocxl: Add a kernel API for other opencapi drivers

2018-01-24T00:42:59+00:00

Some of the functions done by the generic driver should also be needed
by other opencapi drivers: attaching a context to an adapter,
translation fault handling, AFU interrupt allocation...

So to avoid code duplication, the driver provides a kernel API that
other drivers can use, similar to calling a in-kernel library.

It is still a bit theoretical, for lack of real hardware, and will
likely need adjustements down the road. But we used the cxlflash
driver as a guinea pig.

Signed-off-by: Frederic Barrat 
Signed-off-by: Michael Ellerman

powerpc/powernv: Capture actag information for the device

2018-01-24T00:42:57+00:00

In the opencapi protocol, host memory contexts are referenced by a
'actag'. During setup, a driver must tell the device how many actags
it can used, and what values are acceptable.

On POWER9, the NPU can handle 64 actags per link, so they must be
shared between all the PCI functions of the link. To get a global
picture of how many actags are used by each AFU of every function, we
capture some data at the end of PCI enumeration, so that actags can be
shared fairly if needed.

This is not powernv specific per say, but rather a consequence of the
opencapi configuration specification being quite general. The number
of available actags on POWER9 makes it more likely to be hit. This is
somewhat mitigated by the fact that existing AFUs are coded by
requesting a reasonable count of actags and existing devices carry
only one AFU.

Signed-off-by: Frederic Barrat 
Signed-off-by: Michael Ellerman