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

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: trace MMU map/unmap page

2022-09-18T10:29:53Z

This patch utilize the defined tracepoint to trace the MMU's pages map/unmap operations. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Reviewed-by: Steven Rostedt (Google) Signed-off-by: Oded Gabbay

habanalabs: if map page fails don't try to unmap it

2022-09-18T10:29:52Z

The original code tried to unmap a page that was not mapped as part of the map page error path. Signed-off-by: Dafna Hirschfeld Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: add gaudi2 MMU support

2022-07-12T06:09:28Z

Gaudi2 has new MMU units. A PMMU for device->host accesses, and HMMU for HBM accesses. The page tables of both MMUs are located in the host's memory (referred to in the code as host-resident pgt). Signed-off-by: Moti Haimovski Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: use kvcalloc when possible

2022-07-12T06:09:24Z

kvcalloc is same as kvmalloc_array with GFP_ZERO. Signed-off-by: Oded Gabbay

habanalabs: Fix kernel-doc

2022-07-12T06:09:21Z

Fix the following W=1 kernel warnings: drivers/misc/habanalabs/common/mmu/mmu_v1.c:425: warning: expecting prototype for hl_mmu_fini(). Prototype was for hl_mmu_v1_fini() instead. drivers/misc/habanalabs/common/mmu/mmu_v1.c:449: warning: expecting prototype for hl_mmu_ctx_init(). Prototype was for hl_mmu_v1_ctx_init() instead. Reported-by: Abaci Robot Signed-off-by: Jiapeng Chong Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay

habanalabs: remove hdev from hl_ctx_get args

2022-05-22T19:01:21Z

This argument is unused by the function. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: do MMU prefetch as deferred work

2022-05-22T19:01:21Z

When user requests to prefetch the MMU translations, the driver will not block the user until prefetch is done. Instead, the prefetch work will be delegated to a WQ which will do it in the background. This way, the prefetch may progress without blocking the user at all. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: refactor HOP functions in MMU V1

2022-05-22T19:01:17Z

Take advantage of the HOPs shift/masks now defined as arrays. Signed-off-by: Ohad Sharabi Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman

habanalabs: fix comments according to kernel-doc

2022-05-22T19:01:17Z

Incorrect/Missing doxygen tag Signed-off-by: Rajaravi Krishna Katta Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay Signed-off-by: Greg Kroah-Hartman