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scsi: cxlflash: Support LUN provisioning

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Adopt the SISLite AFU LUN provisioning capability to allow future CXL
Flash adapters the ability to better manage storage. Update the SISLite
header with the changes necessary to support LUN provision operations
and create a host ioctl interface for user LUN management software. Also
update the cxlflash documentation to describe this new host ioctl.

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>
This commit is contained in:
Matthew R. Ochs
2017-06-21 21:16:13 -05:00
committed by Martin K. Petersen
parent efa1c818d3
commit 9cf43a3604
6 changed files with 192 additions and 9 deletions
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5
drivers/scsi/cxlflash/main.h
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@@ -41,6 +41,10 @@
/* FC defines */
#define FC_MTIP_CMDCONFIG 0x010
#define FC_MTIP_STATUS 0x018
#define FC_MAX_NUM_LUNS 0x080 /* Max LUNs host can provision for port */
#define FC_CUR_NUM_LUNS 0x088 /* Cur number LUNs provisioned for port */
#define FC_MAX_CAP_PORT 0x090 /* Max capacity all LUNs for port (4K blocks) */
#define FC_CUR_CAP_PORT 0x098 /* Cur capacity all LUNs for port (4K blocks) */
#define FC_PNAME 0x300
#define FC_CONFIG 0x320
@@ -63,6 +67,7 @@
/* AFU command timeout values */
#define MC_AFU_SYNC_TIMEOUT 5 /* 5 secs */
#define MC_LUN_PROV_TIMEOUT 5 /* 5 secs */
/* AFU command room retry limit */
#define MC_ROOM_RETRY_CNT 10