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[PATCH 0/7] ppc: pnv ChipTOD and various timebase fixes


From: Nicholas Piggin
Subject: [PATCH 0/7] ppc: pnv ChipTOD and various timebase fixes
Date: Thu, 23 Nov 2023 20:30:11 +1000

The chiptod/TFMR/state machine is not really tied to the other
time register fixes, but they touch some of the same code, and
logically same facility.

Changes since v1 of chiptod patches:
- Split hackish ChipTOD<->TFMR/TBST interface into its own patch
- Fix multi-socket addressing on P9 / chip ID mode (P10 works)
- Change chiptod primary/secondary setting to use class properties
- Add more comments to explain TOD overview and timebase state
  machine.
- SMT support for TFMR, some functionality is limited to thread 0.
- FIRMWARE_CONTROL_ERROR bit implemented in TFMR.
- Misc cleanups and bug fixes.

The hacky part, addressing core from chiptod, is still hacky. Is
there strong objection to it?

This successfully runs skiboot chiptod initialisation code with
POWER9 and POWER10 multi-socket, multi-core, SMT. That requires
skiboot 7.1 (not in-tree), otherwise chiptod init is skipped on
QEMU machines.

Thanks,
Nick

Nicholas Piggin (7):
  target/ppc: Rename TBL to TB on 64-bit
  target/ppc: Improve timebase register defines naming
  target/ppc: Fix move-to timebase SPR access permissions
  pnv/chiptod: Add POWER9/10 chiptod model
  pnv/chiptod: Implement the ChipTOD to Core transfer
  target/ppc: Implement core timebase state machine and TFMR
  target/ppc: Add SMT support to time facilities

 include/hw/ppc/pnv_chip.h    |   3 +
 include/hw/ppc/pnv_chiptod.h |  55 ++++
 include/hw/ppc/pnv_core.h    |   4 +
 include/hw/ppc/pnv_xscom.h   |   9 +
 target/ppc/cpu.h             |  50 +++-
 hw/ppc/pnv.c                 |  63 +++++
 hw/ppc/pnv_chiptod.c         | 509 +++++++++++++++++++++++++++++++++++
 target/ppc/helper_regs.c     |  39 ++-
 target/ppc/ppc-qmp-cmds.c    |   4 +
 target/ppc/timebase_helper.c | 309 ++++++++++++++++++++-
 target/ppc/translate.c       |  42 ++-
 hw/ppc/meson.build           |   1 +
 hw/ppc/trace-events          |   4 +
 13 files changed, 1067 insertions(+), 25 deletions(-)
 create mode 100644 include/hw/ppc/pnv_chiptod.h
 create mode 100644 hw/ppc/pnv_chiptod.c

-- 
2.42.0




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