diff options
| author |   Darrick J. Wong <djwong@us.ibm.com> | 2007-01-11 14:14:57 -0800 |
|---|---|---|
| committer |   James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-01-13 16:13:00 -0600 |
| commit | acbf167d4ad8c27f9743a4b539d51ae9535bf21c (patch) | |
| tree | e53f8330f60acaef42d74a745b3dd5131b424e49 /include/scsi | |
| parent | [SCSI] libsas: Don't give scsi_cmnds to the EH if they never made it to the SAS LLDD or have already returned (diff) | |
| download | linux-dev-acbf167d4ad8c27f9743a4b539d51ae9535bf21c.tar.xz linux-dev-acbf167d4ad8c27f9743a4b539d51ae9535bf21c.zip | |
[SCSI] libsas: Add a sysfs knob to enable/disable a phy
This patch lets a user arbitrarily enable or disable a phy via sysfs.
Potential applications include shutting down a phy to replace one
lane of wide port, and (more importantly) providing a method for the
libata SATL to control the phy.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/libsas.h | 3 | ||||
| -rw-r--r-- | include/scsi/scsi_transport_sas.h | 2 |
2 files changed, 5 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index da96bcfb9e46..0689d6682aa3 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -614,6 +614,9 @@ struct sas_domain_function_template { extern int sas_register_ha(struct sas_ha_struct *); extern int sas_unregister_ha(struct sas_ha_struct *); +int sas_set_phy_speed(struct sas_phy *phy, + struct sas_phy_linkrates *rates); +int sas_phy_enable(struct sas_phy *phy, int enabled); int sas_phy_reset(struct sas_phy *phy, int hard_reset); extern int sas_queuecommand(struct scsi_cmnd *, void (*scsi_done)(struct scsi_cmnd *)); diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h index 59633a82de47..45d58598c3ee 100644 --- a/include/scsi/scsi_transport_sas.h +++ b/include/scsi/scsi_transport_sas.h @@ -54,6 +54,7 @@ struct sas_identify { struct sas_phy { struct device dev; int number; + int enabled; /* phy identification */ struct sas_identify identify; @@ -163,6 +164,7 @@ struct sas_function_template { int (*get_enclosure_identifier)(struct sas_rphy *, u64 *); int (*get_bay_identifier)(struct sas_rphy *); int (*phy_reset)(struct sas_phy *, int); + int (*phy_enable)(struct sas_phy *, int); int (*set_phy_speed)(struct sas_phy *, struct sas_phy_linkrates *); }; |