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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2008-07-17 23:08:48 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-07-26 21:14:55 +0200 |
| commit | 7027ad72a689797475973c6feb5f0b673382f779 (patch) | |
| tree | 4f6daa1d509708fb340d09608d79557a9af57f00 /include/scsi/scsi_device.h | |
| parent | [SCSI] Command protection operation (diff) | |
| download | linux-7027ad72a689797475973c6feb5f0b673382f779.tar.xz linux-7027ad72a689797475973c6feb5f0b673382f779.zip | |
[SCSI] Support devices with protection information
Implement support for DMA of protection information for devices that
are data integrity capable.
- Add support for mapping an extra scatter-gather list containing
the protection information.
- Allocate protection scsi_data_buffer if host is DIX (integrity DMA)
capable.
- Accessor function for checking whether a device has protection
enabled.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include/scsi/scsi_device.h')
| -rw-r--r-- | include/scsi/scsi_device.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 4deb9349eebf..9cecc409f0f8 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -423,6 +423,11 @@ static inline int scsi_device_enclosure(struct scsi_device *sdev) return sdev->inquiry[6] & (1<<6); } +static inline int scsi_device_protection(struct scsi_device *sdev) +{ + return sdev->inquiry[5] & (1<<0); +} + #define MODULE_ALIAS_SCSI_DEVICE(type) \ MODULE_ALIAS("scsi:t-" __stringify(type) "*") #define SCSI_DEVICE_MODALIAS_FMT "scsi:t-0x%02x" |