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[0/2] ppc/pnv: ADU model for POWER9/10

Message ID 20240417110215.808926-1-npiggin@gmail.com
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Series ppc/pnv: ADU model for POWER9/10 | expand

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Nicholas Piggin April 17, 2024, 11:02 a.m. UTC 
These patches adds the framework for a proper ADU model rather than
putting registers into the xscom default ops, and implements ADU's
indirect LPC access functionality which IBM's proprietary firmware
uses to provide consoles on UARTs.

Patch 1 should be quite a simple hooking up the xscom address space.

Patch 2 implements one of the memory access functions of the ADU that
drives access to LPC address space from XSCOM register operations which
is non-trivial but there are similar examples already in tree.

Thanks,
Nick

Nicholas Piggin (2):
  ppc/pnv: Begin a more complete ADU LPC model for POWER9/10
  ppc/pnv: Implement ADU access to LPC space

 include/hw/ppc/pnv_adu.h   |  41 ++++++++
 include/hw/ppc/pnv_chip.h  |   3 +
 include/hw/ppc/pnv_lpc.h   |   5 +
 include/hw/ppc/pnv_xscom.h |   6 ++
 hw/ppc/pnv.c               |  20 ++++
 hw/ppc/pnv_adu.c           | 202 +++++++++++++++++++++++++++++++++++++
 hw/ppc/pnv_lpc.c           |  12 +--
 hw/ppc/pnv_xscom.c         |   9 --
 hw/ppc/meson.build         |   1 +
 hw/ppc/trace-events        |   4 +
 10 files changed, 288 insertions(+), 15 deletions(-)
 create mode 100644 include/hw/ppc/pnv_adu.h
 create mode 100644 hw/ppc/pnv_adu.c