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| author | Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> | 2017-03-17 04:17:34 +0100 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2017-03-31 12:55:06 +0200 |
| commit | 060d2b5afcc4f9e2d61e2b059e648f569b8dba9a (patch) | |
| tree | c33cfb0c149782f539391e3cbcc4cd021eb6886b /drivers/s390/cio/vfio_ccw_drv.c | |
| parent | vfio: ccw: register vfio_ccw to the mediated device framework (diff) | |
| download | linux-060d2b5afcc4f9e2d61e2b059e648f569b8dba9a.tar.xz linux-060d2b5afcc4f9e2d61e2b059e648f569b8dba9a.zip | |
vfio: ccw: introduce ccw_io_region
To provide user-space a set of interfaces to:
1. pass in a ccw program to perform an I/O operation.
2. read back I/O results of the completed I/O operations.
We introduce an MMIO region for the vfio-ccw device here.
This region is defined to content:
1. areas to store arguments that an ssch required.
2. areas to store the I/O results.
Using pwrite/pread to the device on this region, a user-space program
could write/read data to/from the vfio-ccw device.
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170317031743.40128-8-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/vfio_ccw_drv.c')
0 files changed, 0 insertions, 0 deletions