Merge tag 'misc-habanalabs-next-2022-11-23' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux into char-misc-next

Oded writes:

This tag contains habanalabs driver changes for v6.2:

- New feature of graceful hard-reset. Instead of immediately killing the
  user-process when a command submission times out, we wait a bit and give
  the user-process notification and let it try to close things gracefully,
  with the ability to retrieve debug information.

- Enhance the EventFD mechanism. Add new events such as access to illegal
  address (RAZWI), page fault, device unavailable. In addition, change the
  event workqueue to be handled in a single-threaded workqueue.

- Allow the control device to work during reset of the ASIC, to enable
  monitoring applications to continue getting the data.

- Add handling for Gaudi2 with PCI revision 2.

- Reduce severity of prints due to power/thermal events.

- Change how we use the h/w to perform memory scrubbing in Gaudi2.

- Multiple bug fixes, refactors and renames.

* tag 'misc-habanalabs-next-2022-11-23' of https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux: (63 commits)
  habanalabs: fix VA range calculation
  habanalabs: fail driver load if EEPROM errors detected
  habanalabs: make print of engines idle mask more readable
  habanalabs: clear non-released encapsulated signals
  habanalabs: don't put context in hl_encaps_handle_do_release_sob()
  habanalabs: print context refcount value if hard reset fails
  habanalabs: add RMWREG32_SHIFTED to set a val within a mask
  habanalabs: fix rc when new CPUCP opcodes are not supported
  habanalabs/gaudi2: added memset for the cq_size register
  habanalabs: added return value check for hl_fw_dynamic_send_clear_cmd()
  habanalabs: increase the size of busy engines mask
  habanalabs/gaudi2: change memory scrub mechanism
  habanalabs: extend process wait timeout in device fine
  habanalabs: check schedule_hard_reset correctly
  habanalabs: reset device if still in use when released
  habanalabs/gaudi2: return to reset upon SM SEI BRESP error
  habanalabs/gaudi2: don't enable entries in the MSIX_GW table
  habanalabs/gaudi2: remove redundant firmware version check
  habanalabs/gaudi: fix print for firmware-alive event
  habanalabs: fix print for out-of-sync and pkt-failure events
  ...

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs
index c915bf17b293..85f6d04f528b 100644
--- a/Documentation/ABI/testing/debugfs-driver-habanalabs
+++ b/Documentation/ABI/testing/debugfs-driver-habanalabs
@@ -91,6 +91,13 @@ Description:    Enables the root user to set the device to specific state.
                 Valid values are "disable", "enable", "suspend", "resume".
                 User can read this property to see the valid values
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/device_release_watchdog_timeout
+Date:           Oct 2022
+KernelVersion:  6.2
+Contact:        ttayar@habana.ai
+Description:    The watchdog timeout value in seconds for a device relese upon
+                certain error cases, after which the device is reset.
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/dma_size
 Date:           Apr 2021
 KernelVersion:  5.13