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

treewide: use get_random_u32() when possible

2022-10-11T23:42:58Z

The prandom_u32() function has been a deprecated inline wrapper around get_random_u32() for several releases now, and compiles down to the exact same code. Replace the deprecated wrapper with a direct call to the real function. The same also applies to get_random_int(), which is just a wrapper around get_random_u32(). This was done as a basic find and replace. Reviewed-by: Greg Kroah-Hartman Reviewed-by: Kees Cook Reviewed-by: Yury Norov Reviewed-by: Jan Kara # for ext4 Acked-by: Toke Høiland-Jørgensen # for sch_cake Acked-by: Chuck Lever # for nfsd Acked-by: Jakub Kicinski Acked-by: Mika Westerberg # for thunderbolt Acked-by: Darrick J. Wong # for xfs Acked-by: Helge Deller # for parisc Acked-by: Heiko Carstens # for s390 Signed-off-by: Jason A. Donenfeld

habanalabs: eliminate aggregate use warning

2022-09-20T12:52:27Z

When doing sizeof() and giving as argument a dereference of a pointer-to-a-pointer object, clang will issue a warning. Eliminate the warning by passing struct * Signed-off-by: Oded Gabbay

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: remove some f/w descriptor validations

2022-09-20T12:46:45Z

To be forward-backward compatible with the firmware in the initial communication during preboot, we need to remove the validation of the header size. This will allow us to add more fields to the lkd_fw_comms_desc structure. Instead of the validation of the header size, we just print warning when some mismatch in descriptor has been revealed, and we calculate the CRC base on descriptor size reported by the firmware instead of calculating it ourselves. Signed-off-by: farah kassabri Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: build ASICs from new to old

2022-09-20T12:42:08Z

Newer ASICs code changes more often, has more chance to fail compilation. So, let's compile them first so errors in those files will fail compilation sooner. Signed-off-by: Ohad Sharabi 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: failure to open device due to reset is debug level

2022-09-19T12:09:04Z

If the user wants to open the device, and the device is currently in reset, the user will get an error from the open(). We don't need to display an error in the dmesg for that as it is not a real error and we can spam the kernel log with this message. Signed-off-by: Oded Gabbay

habanalabs/gaudi2: Remove unnecessary (void*) conversions

2022-09-19T12:08:40Z

The void pointer object can be directly assigned to different structure objects, it does not need to be cast. Signed-off-by: Li zeming 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: add handling to pmmu events in eqe handler

2022-09-19T12:08:39Z

In order to get the error cause and the captured address in case of page fault, added pmmu events to eqe handler. Signed-off-by: Dani Liberman Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay