Re: [Qemu-devel] [PATCH][RFC 0/14] implement power chip

[li guang <lig.fnst@cn.fujitsu.com>]

ping ...


在 2013-03-15五的 08:59 +0800，li guang写道：
> Hi, Anthony
> 
> Sorry to bother you,
> can you please help to see it this work is
> worth to go on, or ...
> 
> or someone else can help to see this patch-set.
> 
> Thanks All.
> 
> 
> 在 2013-03-13三的 16:01 +0800，liguang写道：
> > By now, all devices of QEMU do not have much more
> > power management consideration, for example, if
> > system do suspend, it will call all registered notifiers,
> > this was loosely required, and the code to do power management
> > state transition seems just do 'ugly emulation', rather than be
> > conscious with whole system devices, same condition with reset(it
> > has been embedded in DeviceClass, good!),
> > shutdown, in real world, commonly all devices' power are controlled
> > by a power chip, then all power sequence can be done just
> > issue commands to this chip.
> > so, I come across an idea to implement qdev'ed power device, and
> > make all qdev struct of devices aware of self power management(add
> > on/off/wakeup/suspend ... filed for DeviceClass), this will
> > bring tidy power management, and the emulation will more like what
> > happened in real world.
> > 
> > Of course, it's only a patch-set for RFC, I'd like to ask all 
> > developers to help correct this idea, if it's worth to implement, 
> > I'll go head to refactor more.
> > 
> > Li Guang (14)
> > 	 gitignore: ignore more files
> > 	 qdev: add power management method
> > 	 qdev: remove redundant abort()
> > 	 qdev: add power on/off/suspend/wakeup handler
> > 	 power: add power chip emulation
> > 	 sysemu: remove PowerReason in sysemu.h
> > 	 acpi: refactor acpi wakeup function
> > 	 ich9: make lpc's reset also do pm_reset
> > 	 ich9: do lpc's power on by reset function
> > 	 piix4: refactor piix4's power callbacks
> > 	 pckbd: refactor pckbd's power callbacks
> > 	 ps2: call ps2_{kbd,mouse}_reset in kbd_reset
> > 	 parallel: refactor parallel_reset function
> > 	 uhci: refactor uhci's power callbacks
> > 
> > .gitignore              |   3 +++
> > Makefile.objs           |   1 +
> > hw/acpi.c               |  20 +++++++++-----------
> > hw/acpi.h               |   3 ++-
> > hw/acpi_ich9.c          |   4 ++--
> > hw/ich9.h               |   1 +
> > hw/lpc_ich9.c           |  12 ++++++++++-
> > hw/parallel.c           |  10 ++++++----
> > hw/pckbd.c              |  25 ++++++++++++----------
> > hw/piix4.c              |  14 ++++++++++++--
> > hw/ps2.c                |   8 ++++----
> > hw/ps2.h                |   2 ++
> > hw/qdev-core.h          |  15 ++++++
> > hw/qdev.c               |  99 +--
> > hw/usb/hcd-uhci.c       |  10 ++++++++++
> > include/sysemu/sysemu.h |   7 +------
> > power.c                 | 133 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > power.h                 |  41 +++++++++++++++++
> > 18 files changed, 365 insertions(+), 43 deletions(-)
> >  create mode 100644 power.c
> >  create mode 100644 power.h
> > 
> > 
> > 
>