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goldfish: add QEMU pipe driver

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A QEMU pipe is a very fast communication channel between the
guest system and the emulator. Usage from the guest is simply
something like;

  // connect to special device
  fd = open("/dev/qemu_pipe", O_RDWR);

  // tell which service we want to talk to (must be zero-terminated)
  write(fd, "pipeName", strlen("pipeName")+1);

  // do read()/write() through fd now
  ...

  // close channel
  close(fd);

Signed-off-by: David 'Digit' Turner <digit@android.com>
[Added support for parameter buffers for speed]
igned-off-by: Xin, Xiaohui <xiaohui.xin@intel.com>
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Nakajima, Jun <jun.nakajima@intel.com>
[Ported to 3.6]
Signed-off-by: Tom Keel <thomas.keel@intel.com>
[Ported to 3.7, moved to platform/goldfish]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David 'Digit' Turner
2013-01-21 23:48:21 +00:00
committed by Greg Kroah-Hartman
parent e809c22b8f
commit c89f2750e9
4 changed files with 621 additions and 0 deletions
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4
drivers/platform/Kconfig
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@@ -1,3 +1,7 @@
if X86
source "drivers/platform/x86/Kconfig"
endif
if GOLDFISH
source "drivers/platform/goldfish/Kconfig"
endif