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-implement mm ops init_mm_setup_hw
This will also call *fault*setup* that will do s/w and h/w
set up required to get mmu fault info
-implement s/w set up for copying mmu faults
Two shadow fault buffers are pre allocated which will be used to copy
fault info. One for copying from fault snap registers/nonreplayable h/w
fault buffers and one for replay h/w fault buffers
-implement s/w set up for buffering mmu faults
Replayable/Non-replayable fault buffers are mapped in BAR2
virtual/physical address space. These buffers are circular buffers in
terms of address calculation. Currently there are num host channels
buffers
-configure h/w for buffering mmu faults
if s/w set up is successful, configure h/w registers to enable
buffered mode of mmu faults
-if both s/w and h/w set up are successful, enable corresponding
hub interrupts
-implement new ops, fault_info_buf_deinit
This will be called during gk20a_mm_destroy to disable hub intr and
de-allocate shadow fault buf that is used to copy mmu fault info during
mmu fault handling
-implement mm ops remove_bar2_vm
This will also unmap and free fault buffers mapped in BAR2 if fault
buffers were allocated
JIRA GPUT19X-7
JIRA GPUT19X-12
Change-Id: I53a38eddbb0a50a1f2024600583f2aae1f1fba6d
Signed-off-by: Seema Khowala <seemaj@nvidia.com>
Reviewed-on: https://git-master/r/1492682
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
GVS: Gerrit_Virtual_Submit
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