mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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>
This commit is contained in:
Dennis Dalessandro 2017-08-13 08:08:28 -07:00 committed by Doug Ledford
parent b6422bc012
commit 55774d09b7
1 changed files with 19 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/infiniband/hw/hfi1/opa_compat.h
View File

@ -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 */
};