nvdebug.git/bus.c, branch ecrts25-ae

Correct an off-by-one error in addr_to_pramin_mut()

2024-09-25T16:52:42+00:00

Not known to cause any current bugs, but could cause the returned
address to be inaccessible.

Add Hopper and Blackwell support to bus.c

2024-09-10T20:37:09+00:00

- Handle relocation of PRAMIN window configuration register
- Handle new format for BAR2 configuration
- Catch unreadable PRAMIN configuration

Tested on A100, H100, and AD102 (RTX 6000 Ada).

Better logging and errno-defined errors in bus.c

2024-04-21T21:20:30+00:00

Support page directories outside PRAMIN or in SYS_MEM

2024-04-11T17:03:20+00:00

- 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.

Put PRAMIN-pointer and BAR2-page-table-PRAMIN-pointer logic into bus.c

2024-04-08T18:46:57+00:00

Derived from logic in `runlist.c` and `mmu.c`. The new functions
are not directly used in this commit.