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| author | Jeff Skirvin <jeffrey.d.skirvin@intel.com> | 2011-06-21 23:16:33 +0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-07-03 15:04:50 +0400 |
| commit | 61aaff49e20fdb700f1300a49962bc76effc77fc (patch) | |
| tree | e00556108ba35fe5610673d1f10cde3440e4ed12 /drivers/scsi/isci/port.h | |
| parent | ff717ab05f0c33f93514eccea6dfe1a15983e1d1 (diff) | |
| download | linux-61aaff49e20fdb700f1300a49962bc76effc77fc.tar.xz | |
isci: filter broadcast change notifications during SMP phy resets
When resetting a sata device in the domain we have seen occasions where
libsas prematurely marks a device gone in the time it takes for the
device to re-establish the link. This plays badly with software raid
arrays. Other libsas drivers have non-uniform delays in their reset
handlers to try to cover this condition, but not sufficient to close the
hole. Given that a sata device can take many seconds to recover we
filter bcns and poll for the device reattach state before notifying
libsas that the port needs the domain to be rediscovered. Once this has
been proven out at the lldd level we can think about uplevelling this
feature to a common implementation in libsas.
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
[ use kzalloc instead of kmem_cache ]
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
[ use eventq and time macros ]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/scsi/isci/port.h')
| -rw-r--r-- | drivers/scsi/isci/port.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index fee6d80df769..45c01f80bf83 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -173,6 +173,10 @@ struct scic_sds_port { */ struct isci_port { enum isci_status status; + #define IPORT_BCN_BLOCKED 0 + #define IPORT_BCN_PENDING 1 + unsigned long flags; + atomic_t event; struct isci_host *isci_host; struct asd_sas_port sas_port; struct list_head remote_dev_list; @@ -334,6 +338,7 @@ void scic_sds_port_setup_transports( struct scic_sds_port *sci_port, u32 device_id); +void isci_port_bcn_enable(struct isci_host *, struct isci_port *); void scic_sds_port_deactivate_phy( struct scic_sds_port *sci_port, |