diff options
| author | Matthew R. Ochs <mrochs@linux.vnet.ibm.com> | 2016-11-28 18:42:19 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-30 19:53:02 -0500 |
| commit | 5fbb96c8f1ba89fb220efb7e4eeed7cb5112becd (patch) | |
| tree | 48e18c1f6f91dbba8c49968648e35a5c2260849f /drivers/scsi/cxlflash/common.h | |
| parent | 350bb478f57387df1e0b830fc64be2d1c3d55b6b (diff) | |
scsi: cxlflash: Use cmd_size for private commands
Instead of using a private pool of AFU commands, use cmd_size to prime
the private pool of SCSI commands such that they are allocated with a
size large enough to contain an aligned AFU command. Use scsi_cmd_priv()
to derive the aligned/zeroed private command on queuecommand and TMF
paths. Remove cmd_checkout() as it is no longer required. The remaining
AFU private command infrastructure will be removed in a cleanup commit.
Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Acked-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/cxlflash/common.h')
| -rw-r--r-- | drivers/scsi/cxlflash/common.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h index 45255145ecd9..539908f65cc4 100644 --- a/drivers/scsi/cxlflash/common.h +++ b/drivers/scsi/cxlflash/common.h @@ -19,6 +19,7 @@ #include <linux/rwsem.h> #include <linux/types.h> #include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> extern const struct file_operations cxlflash_cxl_fops; @@ -146,6 +147,19 @@ struct afu_cmd { */ } __aligned(cache_line_size()); +static inline struct afu_cmd *sc_to_afuc(struct scsi_cmnd *sc) +{ + return PTR_ALIGN(scsi_cmd_priv(sc), __alignof__(struct afu_cmd)); +} + +static inline struct afu_cmd *sc_to_afucz(struct scsi_cmnd *sc) +{ + struct afu_cmd *afuc = sc_to_afuc(sc); + + memset(afuc, 0, sizeof(*afuc)); + return afuc; +} + struct afu { /* Stuff requiring alignment go first. */ |