linux-dev/drivers/misc/habanalabs/gaudi, branch master

habanalabs/gaudi: use 8KB aligned address for TPC kernels

2022-09-20T12:51:54Z

I$ prefetch is enabled when sending a TPC kernel to initialize the TPC memory, and it has a restriction that the base address will be aligned to 8KB. Currently the base address is 128 bytes from the start address of the device SRAM, so prefetching will start 128 bytes before the actual kernel memory. Modify the kernel address to be 8KB aligned. Signed-off-by: Tomer Tayar Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi: change TPC Assert to use TPC DEC instead of QMAN err

2022-09-19T12:08:39Z

This change is done while there is a problem to use QMAN error for TPC assert async. The problem involves security limitation that exists to generate the assert via QMAN error. Signed-off-by: Tal Cohen Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: rename error info structure

2022-09-19T12:08:39Z

As a preparation for adding more errors to it, change to more suitable name. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: MMU invalidation h/w is per device

2022-09-19T12:08:39Z

The code used the mmu mutex to protect access to the context's page tables and invalidation of the MMU cache. Because pgt are per context, the mmu mutex was a member of the context object. The problem is that the device has a single MMU invalidation h/w (per MMU). Therefore, the mmu mutex should not be a property of the context but a property of the device. Signed-off-by: Oded Gabbay

habanalabs: new notifier events for device state

2022-09-19T12:08:38Z

Add new notifier events that inform several device states. General H/W error raised on device general H/W error occurs. User engine error is raised when a device engine informs of an error. Signed-off-by: Tal Cohen Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: send device active message to f/w

2022-09-19T12:08:37Z

As part of the RAS that is done by the f/w, we should send a message to the f/w when a user either acquires or releases the device. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: unify hwmon resources clean up

2022-09-18T10:29:51Z

Since hwmon fini code is common for all asics, unified it to common function. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi: read div_sel value from firmware

2022-09-18T10:29:50Z

Even when running with unsecured f/w, we should read the PLL div_sel value from the f/w as this register is always privileged. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs/gaudi: fix print format for div_sel

2022-09-18T10:29:50Z

Print format was for int (%d) while variable is u32. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: remove all kdma locks

2022-09-18T10:29:50Z

We don't use KDMA concurrently in the driver. The only use is through debugfs and we don't protect concurrent access through it. Reported-by: Dan Carpenter Signed-off-by: Oded Gabbay