| Commit message (Collapse) | Author | Age |
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- Document topology registers (PTOP) on Ampere+
- Document graphics copy engine configuration registers
- Move resubmit_runlist range checks into runlist.c
- Miscellaneous spacing, typo, and minor documentation fixes
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- Correct V1 page table defines using information from
kern_gmmu_fmt_gm10x.c in NVIDIA's open-gpu-kernel-modules repo.
- Verify page table format in search_v1_page_directory()
- Better, more controllable logging in mmu.c
Tested on GM204 (GTX 970).
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Previously, addresses of any aperture would match. This can result
in very confusing results when attempting to verify that a mapping
correctly exists.
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Previously attempted to dereference non-I/O-MMU translated
addresses, which resulted in accessing effectively arbitrary
physical addresses, causing errononus results from
search_page_directory() in particular.
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- Re-read PRAMIN configuration after update to verify change applies
- Return a page_dir_config_t rather than just an address and page.
table version from `get_bar2_pdb()`.
- Less verbose logging for MMU-related functions by default.
- Perform all conversion from SYS_MEM/VID_MEM addresses to kernel
addresses inside the translation functions, via the new function
'pd_deref()`.
- Support use of an I/O MMU, page tables/directories outside the
current PRAMIN window, and page tables/directories arbitrarially
located in SYS_MEM or VID_MEM on different levels of the same tree.
- Heavily improve documentation and add references for Version 1 and
Version 0 page tables.
- Improve logging in `runlist.c` to include runlist and chip IDs.
- Update all users of search_page_directory* to use the new API.
- Remove now-unused supporting functions from `mmu.c`.
Tested on GTX 970, GTX 1060 3GB, Jetson TX2, Titan V, Jetson Xavier,
and RTX 2080 Ti.
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Blindly using an invalid return address was resulting in undefined
behavior due to traversal of non-page-table addresses as though they
were part of the page table.
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This would occationally manifest as an inability to find the runlist
page in BAR2, as only part of the page table was being traversed.
Also includes non-functional changes to documentation, scoping, and
structure layout.
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