nvdebug.git, branch archive/saman63-wip

Rework LCE<->PCE and GRCE->LCE configuration printing API

2024-04-08T18:02:07+00:00

Rather than up to dozens of individual files exposing part of each
copy engine's configuration, have one file which exposes a unified
view of the full topology. Example new output on RTX 2080 Ti:

$ cat /proc/gpu0/copy_topology
GRCE0 -> LCE04
GRCE1 -> LCE03
LCE02 -> PCE02
LCE03 -> PCE03
LCE04 -> PCE01

Old output:
$ tail -n 1 /proc/gpu0/lce_for_pce*
==> /proc/gpu0/lce_for_pce0 <==
0xf
==> /proc/gpu0/lce_for_pce1 <==
0x4
==> /proc/gpu0/lce_for_pce2 <==
0x2
==> /proc/gpu0/lce_for_pce3 <==
0x3

$ tail -n 1 /proc/gpu1/shared_lce_for_grce*
==> /proc/gpu0/shared_lce_for_grce0 <==
0x4
==> /proc/gpu0/shared_lce_for_grce1 <==
0x3

Specifically:
- Add `copy_topology` API
- Remove `shared_lce_for_grce#` and `lce_for_pce#` APIs
- Move logic from `nvdebug_entry.c` to `copy_topology_procfs.c`
- Do not print PCE or Shared LCE configuration if flagged absent
- Refer to LCE0 and LCE1 as GRCE0 and GRCE1
- Print by LCE ID, which is move helpful when attempting to trace
  how a given copy runlist maps to a physical copy engine.
- Document two errata with CE registers

Tested working on Pascal Integrated, Pascal, Volta Integrated
Volta, Turing, and Ampere Integrated on Linux 4.9 through 5.10.

Expand support for printing LCE<->PCE and GRCE->LCE configuration

2023-11-08T20:01:24+00:00

Tested working on Pascal, Volta, Volta Integrated, Turing, Ampere,
and Ada.

Also clean up minor spacing issues, an errantly added file
(nvdebug.mod), and fix some inconsistencies with upstream.

Created new read function in device_info for GRCE mappings and Pascal LCE mappings

2023-10-29T19:45:33+00:00

patched issues with GPU compatability for CE_MAP

2023-10-29T19:45:32+00:00

implemented GRCE to PCE mapping

2023-10-29T19:45:32+00:00

Updated for loop formatting and fixed a casting error

2023-10-29T19:45:32+00:00

added offsets for lce mapping in nvdebug.h and code to read lce for each pce in nvdebug_entry.c

2023-10-29T19:45:32+00:00

Add nvdebug.mod to .gitignore

2023-10-29T19:43:28+00:00

Support printing device info on Ampere+ GPUs. By Benjamin Hadad IV

2023-10-29T19:43:16+00:00

commit c3d6f2c852eb046e9d4f4f1e6527b52c746b2693
Author: Joshua Bakita 
Date:   Sun Oct 29 14:37:51 2023 -0400

    Print Ampere+ device_info fields with correct offsets/widths

    Everything now has been checked against how nvgpu handles it

commit b70849d1ce67a58f9f69b37dc62122f789f4cdf7
Author: Joshua Bakita 
Date:   Wed Sep 20 14:27:38 2023 -0400

    Rearrange, fix an off-by-one error, and remove an unused define

    The code in nvdebug.h has been rearranged to enable an easier merge
    against the jbakita-wip branch.

commit 51f808e092846a60ea6c88ea3a1d2e349c92977b
Author: Joshua Bakita 
Date:   Wed Sep 20 13:09:17 2023 -0400

    Bug fixes and cleanup for new device_info logic

    - Update comments to match new structure
    - Make show() function idempotent
    - Skip empty table entries without aborting
    - Include names for new engine types
    - Add warning log messages for skipped table entries
    - Remove non-functional runlist file creation logic for Ampere+

commit 1d7adc3be1aef5ac9c144bb24008fd8cc5d688a5
Author: Benjamin Hadad IV 
Date:   Sat Aug 19 12:47:18 2023 -0400

    Debugging changes made to restore functionality following refactoring.
     - Debugged data display errors.
     - Debugged crash bugs.
     - Debugged memory issue.

commit 9e6cc03cdf736fbd817ed53fa9a7f506bc91a244
Author: Benjamin Hadad IV 
Date:   Wed Aug 16 22:00:20 2023 -0400

    A variety of changes have been made as part of the code review.
     - Functions have been consolidated.
     - Code was clarified and tidied up overall.
     - Unnecessary elements were removed.

commit 845960fc1b15995fdbd6d61c384567652a150bc4
Author: Benjamin Hadad IV 
Date:   Fri Jul 28 11:39:28 2023 -0400

    Refactored various systems and debugged minor issues
     - Added device_info_iter
     - Merged functions in device_info_procfs.c
     - Separated device_info data structs by version in nvdebug.h
     - Fixed issue with device_info runlist ID data

commit 8a57aaeba41c43233c323d7e0fc8bf1a81ebc65e
Author: Benjamin Hadad IV 
Date:   Fri Jul 21 11:32:51 2023 -0400

    I have updated the ptop_device_info_t comment in nvdebug.h.

commit 33c915f08f5dc63674b158ecc18897494256a6d0
Author: Benjamin Hadad IV 
Date:   Wed Jul 19 13:02:52 2023 -0400

    Debugged device_info functionality
     - Fixed device_info crash bugs
     - Made further edits to display functionality
     - Refactored code to enhance readability

commit bfb4dcf0e78954c0163f3a06a5a088c4d1b437a8
Author: Benjamin Hadad IV 
Date:   Thu Jul 13 12:13:17 2023 -0400

    This commit is to update the repo for display during a meeting.
    - Added an Ampere version of the device info data.
    - Added Ampere versions of auxillary functions.
    - Modified display functions to accommodate Ampere data.
    - Made other various small modifications.

commit 068e7f4e7208d6c9250ad72208e0b36fd9fdf2f6
Merge: 3725b15 073e897
Author: Benjamin Hadad IV 
Date:   Mon Jul 10 12:39:12 2023 -0400

    Merge branch 'jbakita-wip' of ssh://rtsrv.cs.unc.edu/public/nvdebug into wip
    I am merging Mr. Bakita's changes (046d7d2) into this repository.

commit 3725b15d5da3e06ef202045d710aa5f15eb72fcc
Author: Benjamin Hadad IV 
Date:   Mon Jul 3 04:30:54 2023 -0400

    I modified nvdebug.h for Ampere.

Rather than abort, print placeholders for missing runlist channels

2023-10-29T17:45:28+00:00

Sometimes such "malformed" runlists appear on the TX2, yet they
seem to work fine, so support printing them in full.