[Qemu-devel] [RFC 00/10] AHCI Device improvements

[John Snow <jsnow@redhat.com>]

This patch series collects a number of fixes centered
around improving the AHCI device.

A number of them used to be tied to as-yet unposted
ahci-test patches, but I have separated them out
in order to post them standalone and collect feedback.

This series as a whole fixes a number of crashes,
bugs, and some specification issues that were a problem
mostly in unit testing, though several observable
problems with real guests are fixed by this series:

(1) Byte count after DMA completion fixes Windows 7
    hibernate as well as non-ncq BSODs.

(2) FIS decomposition fixes prevent corruption when
    reading from / writing to sectors located beyond
    the LBA28 limit.
    (Reported by Eniac Zhang <eniac@hp.com>)

(3) SDB_FIS construction issues may be partly responsible
    for unreliable NCQ operation within windows.

John Snow (10):
  ide: add is_write() macro for semantic consistency
  AHCI: Update byte count after DMA completion
  AHCI: Add PRD interrupt
  ide: Correct handling of malformed/short PRDTs
  AHCI: Rename NCQFIS structure fields
  AHCI: Fix FIS decomposition
  ide/ahci: Reorder error cases in handle_cmd
  ahci: Check cmd_fis[1] more explicitly
  ahci: factor out FIS decomposition
  AHCI: Fix SDB FIS Construction

 dma-helpers.c        |   8 ++
 hw/ide/ahci.c        | 337 +++++++++++++++++++++++++++++++--------------------
 hw/ide/ahci.h        |  51 ++++++--
 hw/ide/core.c        |  17 ++-
 hw/ide/internal.h    |   3 +
 hw/ide/pci.c         |   5 +-
 include/sysemu/dma.h |   1 +
 7 files changed, 270 insertions(+), 152 deletions(-)

-- 
1.9.3