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| author | Matthew R. Ochs <mrochs@linux.vnet.ibm.com> | 2015-08-13 21:47:53 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-08-26 18:05:39 -0700 |
| commit | 2cb79266d6b229dbebd31fe114af1bdab25c8076 (patch) | |
| tree | 1b90c42981d18836586209f618330d9617698eb2 /drivers/scsi/cxlflash/sislite.h | |
| parent | 65be2c79acc3aa0f9c0e8d4871f5a451d854465a (diff) | |
| download | linux-2cb79266d6b229dbebd31fe114af1bdab25c8076.tar.bz2 | |
cxlflash: Virtual LUN support
Add support for physical LUN segmentation (virtual LUNs) to device
driver supporting the IBM CXL Flash adapter. This patch allows user
space applications to virtually segment a physical LUN into N virtual
LUNs, taking advantage of the translation features provided by this
adapter.
Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Reviewed-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/cxlflash/sislite.h')
| -rw-r--r-- | drivers/scsi/cxlflash/sislite.h | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/scsi/cxlflash/sislite.h b/drivers/scsi/cxlflash/sislite.h index 66b889151a4c..63bf394fe78c 100644 --- a/drivers/scsi/cxlflash/sislite.h +++ b/drivers/scsi/cxlflash/sislite.h @@ -397,16 +397,17 @@ struct cxlflash_afu_map { }; }; -/* LBA translation control blocks */ - +/* + * LXT - LBA Translation Table + * LXT control blocks + */ struct sisl_lxt_entry { u64 rlba_base; /* bits 0:47 is base - * b48:55 is lun index - * b58:59 is write & read perms - * (if no perm, afu_rc=0x15) - * b60:63 is port_sel mask - */ - + * b48:55 is lun index + * b58:59 is write & read perms + * (if no perm, afu_rc=0x15) + * b60:63 is port_sel mask + */ }; /* @@ -465,4 +466,7 @@ struct sisl_rht_entry_f1 { #define TMF_LUN_RESET 0x1U #define TMF_CLEAR_ACA 0x2U + +#define SISLITE_MAX_WS_BLOCKS 512 + #endif /* _SISLITE_H */ |