[Qemu-devel] [PATCH 00/16] ahci: ncq cleanup, part 2

[John Snow <jsnow@redhat.com>]

requires: 1434470575-21625-1-git-send-email-jsnow@redhat.com
          1435016308-6150-1-git-send-email-jsnow@redhat.com
          [PATCH v2 0/4] ahci: misc fixes/tests for 2.4
          [PATCH v2 00/16] ahci: ncq cleanup, part 1

This chunk gets NCQ migration and and resume support working.

There's still some left to do, particularly around error handling
and FIS semantics, but this should get us most of the way there.

There is one RFC bit in this patch, inside of Patch #1, concerning
how to handle truncating PRDTs that are too large -- it looks like
we have attempted to address it in the past, and I accidentally
bumped up against it now. By actually trying to consume the PRDs
but ignoring any extra space they describe, I would break ide-test.

I'll post logs later, but judging by the test text itself, we don't
seem to know what the right behavior is.

________________________________________________________________________________

For convenience, this branch is available at:
https://github.com/jnsnow/qemu.git branch ahci-ncq-s2
https://github.com/jnsnow/qemu/tree/ahci-ncq-s2

This version is tagged ahci-ncq-s2-v1:
https://github.com/jnsnow/qemu/releases/tag/ahci-ncq-s2-v1

John Snow (16):
  ide: add limit to .prepare_buf()
  ahci: stash ncq command
  ahci: assert is_ncq for process_ncq
  ahci: refactor process_ncq_command
  ahci: factor ncq_finish out of ncq_cb
  ahci: record ncq failures
  ahci: kick NCQ queue
  ahci: correct types in NCQTransferState
  ahci: correct ncq sector count
  qtest/ahci: halted NCQ test
  ahci: add cmd header to ncq transfer state
  ahci: ncq migration
  ahci: add get_cmd_header helper
  ahci: Do not map cmd_fis to generate response
  qtest/ahci: halted ncq migration test
  ahci: fix sdb fis semantics

 hw/ide/ahci.c     | 330 ++++++++++++++++++++++++++++++++----------------------
 hw/ide/ahci.h     |   9 +-
 hw/ide/core.c     |  12 +-
 hw/ide/internal.h |   4 +-
 hw/ide/macio.c    |   2 +-
 hw/ide/pci.c      |   5 +-
 tests/ahci-test.c |  38 +++++--
 7 files changed, 252 insertions(+), 148 deletions(-)

-- 
2.1.0