[Qemu-devel] [PATCH V4 0/5] Ehnahced SSI bus support + M25P80 SPI flash + Xilinx SPI controller

["Peter A. G. Crosthwaite" <peter.crosthwaite@petalogix.com>]

Patch 1 Enhances SSI bus support to properly support multiple attached devices. An api is provided for SSI/SPI masters to select a particular device attached to the bus.

Patch 2 is a device model for the m25p80 style SPI flash chip.

Patch 3 is  the Xilinx XPS SPI contoller. Its a sysbus device that instantiates a ssi bus, and interfaces the two (as per the controllers functionality)

Patch 4 instantiates the XPS SPI controller in the petalogix ML605 reference platform and connects two m25p80s to it.

Patch 5 updates the stellaris machine model to use the multi slave SSI support

CHANGELOG:
changed from v3:
addressed reviewer comments from P Maydell and S Hajnoczi
added patch 5 (re Paul Brooks request)
changed from v2:
folded former SPI bus functionality into existing SSI infrastructure (suggested - Paul Brook) (all patches)
made m25p80 use async io (suggested - Stefan Hajnoczi) (2/4)
instantiated two spi flashes instead of one in ml605 ref design (4/4)
changed from v1:
minor sylistic changes (1/4)
converted spi api to modified txrx style (1-3/4)
heavily refactored m25p80 model (2/4)

Peter A. G. Crosthwaite (5):
  SSI: Built in multiple device support
  m25p80: initial verion
  xilinx_spi: initial version
  petalogix-ml605: added spi controller with m25p80
  stellaris: Updated spi bus implementation

 Makefile.target                          |    2 +
 default-configs/microblaze-softmmu.mak   |    1 +
 default-configs/microblazeel-softmmu.mak |    1 +
 hw/m25p80.c                              |  557 ++++++++++++++++++++++++++++++
 hw/petalogix_ml605_mmu.c                 |   23 ++
 hw/spitz.c                               |    8 +-
 hw/ssi.c                                 |  107 +++++-
 hw/ssi.h                                 |   28 ++-
 hw/stellaris.c                           |   21 +-
 hw/tosa.c                                |    2 +-
 hw/xilinx_spi.c                          |  481 ++++++++++++++++++++++++++
 hw/z2.c                                  |    2 +-
 12 files changed, 1196 insertions(+), 37 deletions(-)
 create mode 100644 hw/m25p80.c
 create mode 100644 hw/xilinx_spi.c

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1.7.3.2