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[SCSI] libsas, aic94xx: fix dma mapping cockups with ATA

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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>
This commit is contained in:
James Bottomley
2007-07-16 13:41:04 -05:00
committed by James Bottomley
parent 3a2755af37
commit 0f05df8b3b
3 changed files with 21 additions and 3 deletions
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6
include/scsi/scsi_transport_sas.h
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@ -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,