linux-toradex.git/include/scsi/sas.h, branch v3.11.2

[SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type

2013-05-10T14:47:52+00:00

These enums have been separate since the dawn of SAS, mainly because the
latter is a procotol only enum and the former includes additional state
for libsas.  The dichotomy causes endless confusion about which one you
should use where and leads to pointless warnings like this:

drivers/scsi/mvsas/mv_sas.c: In function 'mvs_update_phyinfo':
drivers/scsi/mvsas/mv_sas.c:1162:34: warning: comparison between 'enum sas_device_type' and 'enum sas_dev_type' [-Wenum-compare]

Fix by eliminating one of them.  The one kept is effectively the sas.h
one, but call it sas_device_type and make sure the enums are all
properly namespaced with the SAS_ prefix.

Signed-off-by: James Bottomley

isci: kill sci_phy_protocol and sci_request_protocol

2012-05-17T19:27:11+00:00

Holdovers from the initial driver cleanup, replace with enum sas_protocol.

Signed-off-by: Dan Williams

[SCSI] libsas: let libata recover links that fail to transmit initial sig-fis

2012-02-29T21:33:02+00:00

libsas fails to discover all sata devices in the domain.  If a device fails
negotiation and does not transmit a signature fis the link needs recovery.
libata already understands how to manage slow to come up links, so treat these
conditions as ata device attach events for the purposes of creating an
ata_port.  This allows libata to manage retrying link bring up.

Rediscovery is modified to be careful about checking changes in dev_type.  It
looks like libsas leaks old devices if the sas address changes, but that's a
fix for another patch.

Acked-by: Jack Wang 
Signed-off-by: Dan Williams 
Signed-off-by: James Bottomley

[SCSI] isci: export phy events via ->lldd_control_phy()

2011-10-02T18:24:26+00:00

Allow the sas-transport-class to update events for local phys via a new
PHY_FUNC_GET_EVENTS command to ->lldd_control_phy().  Fixup drivers that
are not prepared for new enum phy_func values, and unify
->lldd_control_phy() error codes.

These are the SAS defined phy events that are reported in a
smp-report-phy-error-log command:
 * /sys/class/sas_phy//invalid_dword_count
 * /sys/class/sas_phy//running_disparity_error_count
 * /sys/class/sas_phy//loss_of_dword_sync_count
 * /sys/class/sas_phy//phy_reset_problem_count

Signed-off-by: Dan Williams 
Signed-off-by: James Bottomley

[SCSI] libsas: fix warnings when checking sata/stp protocol

2011-10-02T17:51:53+00:00

Several sas drivers legitimately check the protocol against the union of
SAS_PROTOCOL_SATA and SAS_PROTOCOL_STP.  Provide a SAS_PROTOCOL_STP_ALL
to silence warnings like:

drivers/scsi/pm8001/pm8001_sas.c:438:3: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch]
drivers/scsi/mvsas/mv_sas.c:798:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch]
drivers/scsi/mvsas/mv_sas.c:1783:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch]
drivers/scsi/mvsas/mv_sas.c:1886:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch]
drivers/scsi/isci/request.c:3565:2: warning: case value ‘5’ not in enumerated type ‘enum sas_protocol’ [-Wswitch]

Signed-off-by: Dan Williams 
Signed-off-by: James Bottomley

[SCSI] libsas: Allow expander T-T attachments

2011-10-02T17:23:11+00:00

Allow expander table-to-table attachments for
expanders that support it.

Signed-off-by: Luben Tuikov 
Signed-off-by: James Bottomley

[SCSI] libsas: sgpio write support

2011-09-22T10:59:09+00:00

Add SFF-8485 v0.7 / SAS-1 smp-write-gpio register support to libsas.
Defer SAS-2 support unless/until it defines an sgpio interface.

Minimum implementation needed to get the lights blinking.
try_test_sas_gpio_gp_bit() provides a common method to parse the
incoming write data (raw bitstream), and the to_sas_gpio_gp_bit() helper
routine can be used as a basis for the set/clear operations for the
'read' implementation.  Host implementations parse as many bits
(ODx.[012]) as are locally supported and report the number of registers
successfully written.  If the submitted data overruns the internal
number of registers available report the write as a success with the
number of bytes remaining reported in ->resid_len.

Example (assuming an active backplane) set the "identify" pattern for
the first 21 devices:

smp_write_gpio --count=2 --data=92,49,24,92,24,92,49,24 -t 4 --index=1 /dev/bsg/sas_hostX

Signed-off-by: Dan Williams 
Signed-off-by: James Bottomley

[SCSI] libsas: Convert sas_proto users to sas_protocol

2008-01-12T00:22:41+00:00

sparse complains about the mixing of enums in libsas.  Since the
underlying numeric values of both enums are the same, combine them
to get rid of the warning.

Signed-off-by: Darrick J. Wong 
Signed-off-by: James Bottomley

[SCSI] aci94xx: implement link rate setting

2006-09-07T20:20:23+00:00

This patch implements the ability to set the minimum and maximum
linkrates for both libsas (for expanders) and aic94xx (for the host
phys).  It also tidies up the setting of the hardware min and max to
make sure they're updated when the expander emits a change broadcast.

Signed-off-by: James Bottomley

[SCSI] SAS: consolidate linkspeed definitions

2006-09-07T17:41:16+00:00

At the moment we have two separate linkspeed enumerations covering
roughly the same values.  This patch consolidates on a single one enum
sas_linkspeed in scsi_transport_sas.h and uses it everywhere in the
aic94xx driver.  Eventually I'll get around to removing the duplicated
fields in asd_sas_phy and sas_phy ...

Signed-off-by: James Bottomley