Re: [Qemu-devel] [PATCH v2 00/19] ISA DMA controllers cleanup (i8257, i82374)

[John Snow]

On 01/21/2016 05:21 AM, Paolo Bonzini wrote:
> On 20/01/2016 21:31, Hervé Poussineau wrote:
>> Ping.
>>
>> Hervé
>>
>> Le 10/01/2016 16:24, Hervé Poussineau a écrit :
>>> Hi,
>>>
>>> This patchset is a cleanup of the i8257/i82374 ISA DMA controllers.
>>> Global DMA_* functions will be obsoleted and then deleted, and ISA
>>> devices will not
>>> be tied anymore to i8257 DMA device implementation.
>>>
>>> This paves the way to fix support for floppy DMA operations on
>>> sparc/sparc64/MIPS Magnum
>>> platforms (which don't use a i8257 DMA controller), and to support
>>> multiple ISA buses on
>>> the same machine.
>>>
>>> Patch 1 cleans up the i82374 DMA controller, by removing device
>>> inheritance.
>>> Patches 2 to 9 change i8257 to current standards (structures and
>>> functions renaming, QOM)
>>> Patches 10 to 18 create and use a IsaDma interface, to separate
>>> devices from i8257
>>> device implementation.
>>> Patch 19 removes now unused DMA_* functions.
>>>
>>> Hervé
>>>
>>> Changes since v1:
>>> - added patches 4 and 9
>>> - simplify patch 12, so that it compiles alone (John Snow)
>>> - fix warning with clang (John Snow)
> 
> FWIW, the general idea looks great to me.  If John is okay, just send a
> pull request yourself.
> 
> Paolo
> 

Oh, yes, I'm good.

Acked-by: John Snow <address@hidden>

>>> Hervé Poussineau (19):
>>>    i82374: device only existed as ISA device, so simplify device
>>>    i8257: pass ISA bus to DMA_init() function
>>>    i8257: rename struct dma_cont to I8257State
>>>    i8257: rename struct dma_regs to I8257Regs
>>>    i8257: rename functions to start with i8257_ prefix
>>>    i8257: make the DMA running method per controller
>>>    i8257: add missing const
>>>    i8257: QOM'ify
>>>    i8257: move state definition to new independent header
>>>    isa: add an ISA DMA interface, and store it within the ISA bus
>>>    i8257: implement the IsaDma interface
>>>    magnum: disable floppy DMA for now
>>>    sparc: disable floppy DMA
>>>    sparc64: disable floppy DMA
>>>    fdc: use IsaDma interface instead of global DMA_* functions
>>>    cs4231a: use IsaDma interface instead of global DMA_* functions
>>>    gus: use IsaDma interface instead of global DMA_* functions
>>>    sb16: use IsaDma interface instead of global DMA_* functions
>>>    dma: remove now useless DMA_* functions
>>>
>>>   hw/audio/cs4231a.c      |  23 ++-
>>>   hw/audio/gus.c          |  20 ++-
>>>   hw/audio/sb16.c         |  23 ++-
>>>   hw/block/fdc.c          |  65 +++++---
>>>   hw/dma/i82374.c         |  58 +++----
>>>   hw/dma/i8257.c          | 395
>>> ++++++++++++++++++++++++++----------------------
>>>   hw/i386/pc.c            |   2 +-
>>>   hw/isa/isa-bus.c        |  21 +++
>>>   hw/mips/mips_fulong2e.c |   2 +-
>>>   hw/mips/mips_jazz.c     |   5 +-
>>>   hw/mips/mips_malta.c    |   2 +-
>>>   hw/sparc/sun4m.c        |  24 +--
>>>   hw/sparc64/sun4u.c      |  37 ++---
>>>   include/hw/isa/i8257.h  |  42 +++++
>>>   include/hw/isa/isa.h    |  51 +++++--
>>>   include/qemu/typedefs.h |   1 +
>>>   16 files changed, 454 insertions(+), 317 deletions(-)
>>>   create mode 100644 include/hw/isa/i8257.h
>>>
>>
>