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| author | Matthew R. Ochs <mrochs@linux.vnet.ibm.com> | 2017-06-21 21:15:42 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-06-26 15:01:11 -0400 |
| commit | d6e32f530df9827070c45b55a6c67dfa8562184c (patch) | |
| tree | 5ead64979c391a2db924f33effcd02776196cc8c /Documentation/powerpc | |
| parent | cf2430279006e4afa67dfa4cf952ded38c7ed5b4 (diff) | |
| download | linux-d6e32f530df9827070c45b55a6c67dfa8562184c.tar.bz2 | |
scsi: cxlflash: Introduce host ioctl support
As staging for supporting various host management functions, add a host
ioctl infrastructure to filter ioctl commands and perform operations that
are common for all host ioctls. Also update the cxlflash documentation to
create a new section for documenting host ioctls.
Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'Documentation/powerpc')
| -rw-r--r-- | Documentation/powerpc/cxlflash.txt | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/powerpc/cxlflash.txt b/Documentation/powerpc/cxlflash.txt index f9036cb0170d..ee67021bbfe4 100644 --- a/Documentation/powerpc/cxlflash.txt +++ b/Documentation/powerpc/cxlflash.txt @@ -124,8 +124,8 @@ Block library API http://github.com/open-power/capiflash -CXL Flash Driver IOCTLs -======================= +CXL Flash Driver LUN IOCTLs +=========================== Users, such as the block library, that wish to interface with a flash device (LUN) via user space access need to use the services provided @@ -367,3 +367,18 @@ DK_CXLFLASH_MANAGE_LUN exclusive user space access (superpipe). In case a LUN is visible across multiple ports and adapters, this ioctl is used to uniquely identify each LUN by its World Wide Node Name (WWNN). + + +CXL Flash Driver Host IOCTLs +============================ + + Each host adapter instance that is supported by the cxlflash driver + has a special character device associated with it to enable a set of + host management function. These character devices are hosted in a + class dedicated for cxlflash and can be accessed via /dev/cxlflash/*. + + Applications can be written to perform various functions using the + host ioctl APIs below. + + The structure definitions for these IOCTLs are available in: + uapi/scsi/cxlflash_ioctl.h |