linux/drivers/misc/habanalabs/include, branch master

habanalabs: move driver to accel subsystem

2023-01-26T09:52:10Z

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

habanalabs: pass-through request from user to f/w

2023-01-26T08:56:22Z

Add a uAPI, as part of the INFO IOCTL, to allow users to send requests directly to f/w, according to a pre-defined set of opcodes that the f/w exposes. The f/w will put the result in a kernel-allocated buffer, which the driver will then copy to the user-supplied buffer. This will allow f/w tools to communicate directly with the f/w without the need to add a new uAPI to the driver for each new type of request. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: support receiving ascii message from preboot f/w

2023-01-26T08:56:22Z

An Ascii message that is sent from preboot towards the driver will indicate the specific error that occurred on the f/w. This commit supports that message and parse the ascii string in order to print it into the kernel log The commit also changes the way the descriptor struct is declared. While its size increased (it now above 1024 bytes), it will be allocated by using kmalloc instead of stack declaration. Signed-off-by: Tal Cohen Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: support abrupt device reset event

2023-01-26T08:56:21Z

In certain scenarios, firmware might encounter a fatal event for which a device reset is required. Hence, a proper notification is needed for driver to be aware and initiate a reset sequence. In secured environments the reset will be performed by firmware without an explicit request from the driver. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: read binning info from preboot

2023-01-26T08:56:19Z

Sometimes we need the binning info at a very early state of the driver initialization. Therefore, support was added in preboot to provide the binning info as part of the f/w descriptor and the driver can now use that. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: implement fp32 not supported event

2022-11-23T14:13:46Z

Due to binning, Gaudi2 does not always support fp32. We add support for such an event in case fp32 is used by the user in such a device. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: add PCI revision 2 support

2022-11-23T14:13:46Z

Add support for Gaudi2 Device with PCI revision 2. Functionality is exactly the same as revision 1, the only difference is device name exposed to user. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: allow user to flush PCIE by read

2022-09-19T12:10:01Z

In order for the user to flush PCIE he needs to read some register from PCIE block. The chosen register is SPECIAL_GLBL_SPARE_0 and hence needs to be unsecured. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: add secured attestation info uapi

2022-09-19T12:08:40Z

User will provide a nonce via the ioctl, and will retrieve secured attestation data of the boot, generated using given nonce. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi2: get f/w reset status register dynamically

2022-09-19T12:08:39Z

Get the firmware reset status address from the dynamic registers we read from the firmware instead of using a define. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay