linux-dev/Documentation/ABI/testing/debugfs-driver-habanalabs, branch master

habanalabs: expose only valid debugfs nodes

2022-07-12T06:09:31Z

In case security is enabled on the device, some debugfs nodes will fail. Hence, we do not expose them. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: add gaudi2 asic-specific code

2022-07-12T06:09:27Z

Add the ASIC-specific code for Gaudi2. Supply (almost) all of the function callbacks that the driver's common code need to initialize, finalize and submit workloads to the Gaudi2 ASIC. It also contains the code to initialize the F/W of the Gaudi2 ASIC and to receive events from the F/W. It contains new debugfs entry to dump razwi events. razwi is a case where the device's engines create a transaction that reaches an invalid destination. Signed-off-by: Oded Gabbay

habanalabs/gaudi: use memory_scrub_val from debugfs

2022-07-12T06:09:25Z

In the callback scrub_device_mem, use 'memory_scrub_val' from debugfs for the scrubbing value. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: add device memory scrub ability through debugfs

2022-05-22T19:01:20Z

Add the ability to scrub the device memory with a given value. Add file 'dram_mem_scrub_val' to set the value and a file 'dram_mem_scrub' to scrub the dram. This is very important to help during automated tests, when you want the CI system to randomize the memory before training certain DL topologies. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs/gaudi: add debugfs to fetch internal sync status

2022-05-22T18:57:37Z

When Gaudi device is secured the monitors data in the configuration space is blocked from PCI access. As we need to enable user to get sync-manager monitors registers when debugging, this patch adds a debugfs that dumps the information to a binary file (blob). When a root user will trigger the dump, the driver will send request to the f/w to fill a data structure containing dump of all monitors registers. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: enable stop-on-error debugfs setting per ASIC

2022-02-28T12:22:05Z

On Goya and Gaudi, the stop-on-error configuration can be set via debugfs. However, in future devices, this configuration will always be enabled. Modify the debugfs node to be allowed only for ASICs that support this dynamic configuration. Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi: disable CGM permanently

2022-02-28T12:22:01Z

Due to the need of SynapseAI to configure all TPC engines from a single QMAN, the driver must disable CGM and never allow the user to enable it. Otherwise, the configuration of the TPC engines will fail. Signed-off-by: Oded Gabbay

habanalabs: align debugfs documentation to alphabetical order

2021-12-26T06:59:06Z

Move an entry in the debugfs documentation to align with the alphabetical order which is kept this file. Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: debugfs support for larger I2C transactions

2021-12-26T06:59:05Z

I2C debugfs support is limited to 1 byte. We extend functionality to more than 1 byte by using one of the pad fields as a length. No backward compatibility issues as new F/W versions will treat 0 length as a 1 byte length transaction. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: add debugfs node for configuring CS timeout

2021-10-18T09:05:46Z

Command submission timeout is currently determined during driver loading time. As some environments requires this timeout to be modified in runtime, we introduce a new debugfs node that controls the timeout value without the need to reload the driver. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay