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authorLinus Torvalds2022-06-03 11:36:34 -0700
committerLinus Torvalds2022-06-03 11:36:34 -0700
commit6f9b5ed8caddfbc94af8307c557ed57a8ec5c65c (patch)
treedda90fb07a35fc07cf0cedc22f0f6be61b29cf53 /Documentation/ABI
parent54c2cc79194c961a213c1d375fe3aa4165664cc4 (diff)
parent90de6805267f8c79cd2b1a36805071e257c39b5c (diff)
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 ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/stable/sysfs-bus-mhi10
-rw-r--r--Documentation/ABI/testing/debugfs-driver-habanalabs38
2 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-mhi b/Documentation/ABI/stable/sysfs-bus-mhi
index ecfe7662f8d0..96ccc3385a2b 100644
--- a/Documentation/ABI/stable/sysfs-bus-mhi
+++ b/Documentation/ABI/stable/sysfs-bus-mhi
@@ -19,3 +19,13 @@ Description: The file holds the OEM PK Hash value of the endpoint device
read without having the device power on at least once, the file
will read all 0's.
Users: Any userspace application or clients interested in device info.
+
+What: /sys/bus/mhi/devices/.../soc_reset
+Date: April 2022
+KernelVersion: 5.19
+Contact: mhi@lists.linux.dev
+Description: Initiates a SoC reset on the MHI controller. A SoC reset is
+ a reset of last resort, and will require a complete re-init.
+ This can be useful as a method of recovery if the device is
+ non-responsive, or as a means of loading new firmware as a
+ system administration task.
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