diff options
| author | Dennis Dalessandro <dennis.dalessandro@intel.com> | 2017-08-13 08:08:28 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-08-22 14:22:37 -0400 |
| commit | 55774d09b7a1f0d2bfec3320ed71d30fe05466a1 (patch) | |
| tree | 0c68dabf7571fa33310c7591ff26ea4fd6c93dfb /drivers/infiniband | |
| parent | b6422bc01259aea7e4e11f1cd052e80acdf1275b (diff) | |
| download | op-kernel-dev-55774d09b7a1f0d2bfec3320ed71d30fe05466a1.zip op-kernel-dev-55774d09b7a1f0d2bfec3320ed71d30fe05466a1.tar.gz | |
IB/hfi1: Document phys port state bits not used in IB
A couple bits are used by OPA for link physical state that are not present
as part of InfiniBand. Add a short blurb what those states mean and removed
an unused state.
Cc: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Todd Rimmer <todd.rimmer@intel.com>
Reviewed-by: Brent Rothermel <brent.r.rothermel@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/opa_compat.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/opa_compat.h b/drivers/infiniband/hw/hfi1/opa_compat.h index 6ef3c1c..774215b 100644 --- a/drivers/infiniband/hw/hfi1/opa_compat.h +++ b/drivers/infiniband/hw/hfi1/opa_compat.h @@ -84,7 +84,8 @@ static inline u8 port_states_to_phys_state(struct opa_port_states *ps) /* * OPA port physical states * IB Volume 1, Table 146 PortInfo/IB Volume 2 Section 5.4.2(1) PortPhysState - * values. + * values are the same in OmniPath Architecture. OPA leverages some of the same + * concepts as InfiniBand, but has a few other states as well. * * When writing, only values 0-3 are valid, other values are ignored. * When reading, 0 is reserved. @@ -92,6 +93,8 @@ static inline u8 port_states_to_phys_state(struct opa_port_states *ps) * Returned by the ibphys_portstate() routine. */ enum opa_port_phys_state { + /* Values 0-7 have the same meaning in OPA as in InfiniBand. */ + IB_PORTPHYSSTATE_NOP = 0, /* 1 is reserved */ IB_PORTPHYSSTATE_POLLING = 2, @@ -101,9 +104,23 @@ enum opa_port_phys_state { IB_PORTPHYSSTATE_LINK_ERROR_RECOVERY = 6, IB_PORTPHYSSTATE_PHY_TEST = 7, /* 8 is reserved */ + + /* + * Offline: Port is quiet (transmitters disabled) due to lack of + * physical media, unsupported media, or transition between link up + * and next link up attempt + */ OPA_PORTPHYSSTATE_OFFLINE = 9, - OPA_PORTPHYSSTATE_GANGED = 10, + + /* 10 is reserved */ + + /* + * Phy_Test: Specific test patterns are transmitted, and receiver BER + * can be monitored. This facilitates signal integrity testing for the + * physical layer of the port. + */ OPA_PORTPHYSSTATE_TEST = 11, + OPA_PORTPHYSSTATE_MAX = 11, /* values 12-15 are reserved/ignored */ }; |
