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| author | James Bottomley <James.Bottomley@steeleye.com> | 2007-07-16 22:41:04 +0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-07-18 20:16:14 +0400 |
| commit | 0f05df8b3b41bc258bdf520b72e8cf7c524048b7 (patch) | |
| tree | e6fd95f097da4785a1e0fb195044a745de8e89aa /include/scsi/scsi_transport_sas.h | |
| parent | 3a2755af37b317d47fdc3dd15178adaf5d47263e (diff) | |
| download | linux-0f05df8b3b41bc258bdf520b72e8cf7c524048b7.tar.xz | |
[SCSI] libsas, aic94xx: fix dma mapping cockups with ATA
This one was noticed by Gilbert Wu of Adaptec:
The libata core actually does the DMA mapping for you, so there has to
be an exception in the device drivers that *don't* do dma mapping for
ATA commands. However, since we've already done this, libsas must now
dma map any ATA commands that it wishes to issue ... and yes, this is a
horrible mess.
Additionally, the test in aic94xx for ATA protocols isn't quite right.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi/scsi_transport_sas.h')
| -rw-r--r-- | include/scsi/scsi_transport_sas.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h index 9aedc19820b0..97eeb5b59ea5 100644 --- a/include/scsi/scsi_transport_sas.h +++ b/include/scsi/scsi_transport_sas.h @@ -23,6 +23,12 @@ enum sas_protocol { SAS_PROTOCOL_SSP = 0x08, }; +static inline int sas_protocol_ata(enum sas_protocol proto) +{ + return ((proto & SAS_PROTOCOL_SATA) || + (proto & SAS_PROTOCOL_STP))? 1 : 0; +} + enum sas_linkrate { /* These Values are defined in the SAS standard */ SAS_LINK_RATE_UNKNOWN = 0, |