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authorArun Easi <arun.easi@qlogic.com>2011-08-16 11:29:22 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-08-27 07:55:46 -0600
commit8cb2049c744809193ed3707a37c09676a24599ee (patch)
treeb9523a9a1be8f2610547036d849880d588f0a694 /drivers/scsi/qla2xxx/qla_fw.h
parent01350d05539d1c95ef3568d062d864ab76ae7670 (diff)
downloadtalos-obmc-linux-8cb2049c744809193ed3707a37c09676a24599ee.tar.gz
talos-obmc-linux-8cb2049c744809193ed3707a37c09676a24599ee.zip
[SCSI] qla2xxx: T10 DIF - Handle uninitalized sectors.
Driver needs to update protection bytes for uninitialized sectors as they are not DMA-d. Signed-off-by: Arun Easi <arun.easi@qlogic.com> Reviewed-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_fw.h')
-rw-r--r--drivers/scsi/qla2xxx/qla_fw.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h
index 691783abfb69..aa69486dc064 100644
--- a/drivers/scsi/qla2xxx/qla_fw.h
+++ b/drivers/scsi/qla2xxx/qla_fw.h
@@ -537,6 +537,11 @@ struct sts_entry_24xx {
/*
* If DIF Error is set in comp_status, these additional fields are
* defined:
+ *
+ * !!! NOTE: Firmware sends expected/actual DIF data in big endian
+ * format; but all of the "data" field gets swab32-d in the beginning
+ * of qla2x00_status_entry().
+ *
* &data[10] : uint8_t report_runt_bg[2]; - computed guard
* &data[12] : uint8_t actual_dif[8]; - DIF Data received
* &data[20] : uint8_t expected_dif[8]; - DIF Data computed
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