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8 Commits

Author SHA1 Message Date
Koby Elbaz
f7d67c1cfd habanalabs/gaudi2: find decode error root cause 
When a decode error happens, we often don't know the exact root
cause (the erroneous address that was accessed) and the exact engine
that created the erroneous transaction.

To find out, we need to go over all the relevant register blocks
in the ASIC. Once we find the relevant engine, we print its details
and the offending address.

This helps tremendously when debugging an error that was created
by running a user workload.

Signed-off-by: Koby Elbaz <kelbaz@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:14 +02:00
Gustavo A. R. Silva
7d352a8160 habanalabs: Replace zero-length arrays with flexible-array members 
Zero-length arrays are deprecated[1] and we are moving towards
adopting C99 flexible-array members instead. So, replace zero-length
arrays in a couple of structures with flex-array members.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [2].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:12 +02:00
Koby Elbaz
6cfb00139d habanalabs/gaudi2: avoid reconfiguring the same PB registers 
It appears that, within the sync manager security configuration,
we reconfigure PB registers over and over without any need to do that.

Signed-off-by: Koby Elbaz <kelbaz@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:11 +02:00
Oded Gabbay
139dad0471 habanalabs: update f/w files 
Update common firmware files with the latest version.
There is no functional change.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:10 +02:00
Oded Gabbay
bcace6f058 habanalabs/gaudi2: update f/w files 
Update gaudi2 firmware files with the latest version.
There is no functional change.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:10 +02:00
Oded Gabbay
2fd7db3c80 habanalabs/gaudi2: update asic register files 
Update some register files with the latest h/w auto-generated files.
There is no functional change.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:10 +02:00
Ohad Sharabi
20faaeec37 habanalabs: add uapi to flush inbound HBM transactions 
When doing p2p with a NIC device, the NIC needs to make sure all the
writes to the HBM (through the PCI bar of the Gaudi device) were
flushed.

It can be done by either the NIC or the host reading through the PCI
bar.

To support the host side, we supply a simple uapi to perform this flush
through the driver, because the user can't create such a transaction
by itself (the PCI bar isn't exposed to normal users).

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:10 +02:00
Oded Gabbay
e65e175b07 habanalabs: move driver to accel subsystem 
Now that we have a subsystem for compute accelerators, move the
habanalabs driver to it.

This patch only moves the files and fixes the Makefiles. Future
patches will change the existing code to register to the accel
subsystem and expose the accel device char files instead of the
habanalabs device char files.

Update the MAINTAINERS file to reflect this change.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
 2023-01-26 11:52:10 +02:00