Merge tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc / other smaller driver subsystem updates from Greg KH:
 "Here is the large set of char, misc, and other driver subsystem
  updates for 5.19-rc1. The merge request for this has been delayed as I
  wanted to get lots of linux-next testing due to some late arrivals of
  changes for the habannalabs driver.

  Highlights of this merge are:

   - habanalabs driver updates for new hardware types and fixes and
     other updates

   - IIO driver tree merge which includes loads of new IIO drivers and
     cleanups and additions

   - PHY driver tree merge with new drivers and small updates to
     existing ones

   - interconnect driver tree merge with fixes and updates

   - soundwire driver tree merge with some small fixes

   - coresight driver tree merge with small fixes and updates

   - mhi bus driver tree merge with lots of updates and new device
     support

   - firmware driver updates

   - fpga driver updates

   - lkdtm driver updates (with a merge conflict, more on that below)

   - extcon driver tree merge with small updates

   - lots of other tiny driver updates and fixes and cleanups, full
     details in the shortlog.

  All of these have been in linux-next for almost 2 weeks with no
  reported problems"

* tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (387 commits)
  habanalabs: use separate structure info for each error collect data
  habanalabs: fix missing handle shift during mmap
  habanalabs: remove hdev from hl_ctx_get args
  habanalabs: do MMU prefetch as deferred work
  habanalabs: order memory manager messages
  habanalabs: return -EFAULT on copy_to_user error
  habanalabs: use NULL for eventfd
  habanalabs: update firmware header
  habanalabs: add support for notification via eventfd
  habanalabs: add topic to memory manager buffer
  habanalabs: handle race in driver fini
  habanalabs: add device memory scrub ability through debugfs
  habanalabs: use unified memory manager for CB flow
  habanalabs: unified memory manager new code for CB flow
  habanalabs/gaudi: set arbitration timeout to a high value
  habanalabs: add put by handle method to memory manager
  habanalabs: hide memory manager page shift
  habanalabs: Add separate poll interval value for protocol
  habanalabs: use get_task_pid() to take PID
  habanalabs: add prefetch flag to the MAP operation
  ...

1 files changed, 38 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs
index bcf6915987e4..0f8d20fe343f 100644
--- a/Documentation/ABI/testing/debugfs-driver-habanalabs
+++ b/Documentation/ABI/testing/debugfs-driver-habanalabs
@@ -170,6 +170,20 @@ KernelVersion:  5.1
 Contact:        ogabbay@kernel.org
 Description:    Sets the state of the third S/W led on the device
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/memory_scrub
+Date:           May 2022
+KernelVersion:  5.19
+Contact:        dhirschfeld@habana.ai
+Description:    Allows the root user to scrub the dram memory. The scrubbing
+                value can be set using the debugfs file memory_scrub_val.
+
+What:           /sys/kernel/debug/habanalabs/hl<n>/memory_scrub_val
+Date:           May 2022
+KernelVersion:  5.19
+Contact:        dhirschfeld@habana.ai
+Description:    The value to which the dram will be set to when the user
+                scrubs the dram using 'memory_scrub' debugfs file
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/mmu
 Date:           Jan 2019
 KernelVersion:  5.1
@@ -190,6 +204,30 @@ Description:    Check and display page fault or access violation mmu errors for
                 echo "0x200" > /sys/kernel/debug/habanalabs/hl0/mmu_error
                 cat /sys/kernel/debug/habanalabs/hl0/mmu_error
 
+What:           /sys/kernel/debug/habanalabs/hl<n>/monitor_dump
+Date:           Mar 2022
+KernelVersion:  5.19
+Contact:        osharabi@habana.ai
+Description:    Allows the root user to dump monitors status from the device's
+                protected config space.
+                This property is a binary blob that contains the result of the
+                monitors registers dump.
+                This custom interface is needed (instead of using the generic
+                Linux user-space PCI mapping) because this space is protected
+                and cannot be accessed using PCI read.
+                This interface doesn't support concurrency in the same device.
+                Only supported on GAUDI.
+
+What:           /sys/kernel/debug/habanalabs/hl<n>/monitor_dump_trig
+Date:           Mar 2022
+KernelVersion:  5.19
+Contact:        osharabi@habana.ai
+Description:    Triggers dump of monitor data. The value to trigger the operation
+                must be 1. Triggering the monitor dump operation initiates dump of
+                current registers values of all monitors.
+                When the write is finished, the user can read the "monitor_dump"
+                blob
+
 What:           /sys/kernel/debug/habanalabs/hl<n>/set_power_state
 Date:           Jan 2019
 KernelVersion:  5.1