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[SCSI] mptfusion: Support SAS2.0 Devices with SAS1.0 Controllers

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SAS1.0 Controller was not able to detect SAS2.0 Expanders due to Link
RATE detection was limited to 1.5 Gbps and 3.0 Gbps for SAS1
controllers. Added detection for 6.0 Gbps link.  Now, user can mix-up
6.0 Gpbs links with SAS1.0 controller.

e.g SAS1.0 HBA <----> SAS2.0 Expander <------> SAS2.0 Expander <--------> SAS1.0 Drive.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai 2011-02-10 11:50:39 +05:30 • committed by James Bottomley
parent 8597ae8bfe
commit d75733d51f
4 changed files with 13 additions and 2 deletions
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6
drivers/message/fusion/mptsas.c
View file

@ -3063,6 +3063,9 @@ static int mptsas_probe_one_phy(struct device *dev,
case MPI_SAS_IOUNIT0_RATE_3_0:
phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
break;
case MPI_SAS_IOUNIT0_RATE_6_0:
phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
break;
case MPI_SAS_IOUNIT0_RATE_SATA_OOB_COMPLETE:
case MPI_SAS_IOUNIT0_RATE_UNKNOWN:
default:
@ -3691,7 +3694,8 @@ mptsas_send_link_status_event(struct fw_event_work *fw_event)
}
if (link_rate == MPI_SAS_IOUNIT0_RATE_1_5 ||
link_rate == MPI_SAS_IOUNIT0_RATE_3_0) {
link_rate == MPI_SAS_IOUNIT0_RATE_3_0 ||
link_rate == MPI_SAS_IOUNIT0_RATE_6_0) {
if (!port_info) {
if (ioc->old_sas_discovery_protocal) {