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authorMartin K. Petersen <martin.petersen@oracle.com>2008-07-17 17:08:48 -0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-07-26 15:14:55 -0400
commit7027ad72a689797475973c6feb5f0b673382f779 (patch)
tree4f6daa1d509708fb340d09608d79557a9af57f00 /include/scsi/scsi_device.h
parentdb007fc5e20c00b356e9ffe2d0e007398c65c837 (diff)
downloadop-kernel-dev-7027ad72a689797475973c6feb5f0b673382f779.zip
op-kernel-dev-7027ad72a689797475973c6feb5f0b673382f779.tar.gz
[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.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 4deb934..9cecc40 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"
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