illumos gate

We'd like to add basic support leveraging the AHCI enclosure services which is an optional, standardized means of controlling various parts of the system. This provides basic support and a tool to drive it. Follow up work will be done to integrate it with FM for systems that have these configurations.

This adds a private tool /usr/lib/ahci/ahciem to drive this. For example:

[root@haswell ~]# /usr/lib/ahci/ahciem 
PORT                 ACTIVE       SUPPORTED
ahci0/0              default      ident,fault,default
ahci0/1              default      ident,fault,default
ahci0/2              default      ident,fault,default
ahci0/3              default      ident,fault,default
ahci0/4              default      ident,fault,default
ahci0/5              default      ident,fault,default
[root@haswell ~]# /usr/lib/ahci/ahciem ahci0/1
PORT                 ACTIVE       SUPPORTED
ahci0/1              default      ident,fault,default
[root@haswell ~]# /usr/lib/ahci/ahciem ahci0/1 ahci0/3
PORT                 ACTIVE       SUPPORTED
ahci0/1              default      ident,fault,default
ahci0/3              default      ident,fault,default
[root@haswell ~]# /usr/lib/ahci/ahciem ahci0
PORT                 ACTIVE       SUPPORTED
ahci0/0              default      ident,fault,default
ahci0/1              default      ident,fault,default
ahci0/2              default      ident,fault,default
ahci0/3              default      ident,fault,default
ahci0/4              default      ident,fault,default
ahci0/5              default      ident,fault,default
[root@haswell ~]# /usr/lib/ahci/ahciem ahci0/0 foo
PORT                 ACTIVE       SUPPORTED
ahci0/0              default      ident,fault,default
ahciem: failed to find ahci enclosure port "foo" 
[root@haswell ~]# echo $?
1
[root@haswell ~]# /usr/lib/ahci/ahciem -s ident ahci0/0
[root@haswell ~]# /usr/lib/ahci/ahciem -s fault ahci0/1
[root@haswell ~]# /usr/lib/ahci/ahciem 
PORT                 ACTIVE       SUPPORTED
ahci0/0              ident        ident,fault,default
ahci0/1              fault        ident,fault,default
ahci0/2              default      ident,fault,default
ahci0/3              default      ident,fault,default
ahci0/4              default      ident,fault,default
ahci0/5              default      ident,fault,default
[root@haswell ~]# /usr/lib/ahci/ahciem -s default ahci0
[root@haswell ~]# /usr/lib/ahci/ahciem 
PORT                 ACTIVE       SUPPORTED
ahci0/0              default      ident,fault,default
ahci0/1              default      ident,fault,default
ahci0/2              default      ident,fault,default
ahci0/3              default      ident,fault,default
ahci0/4              default      ident,fault,default
ahci0/5              default      ident,fault,default

I've tested this so far on three different generations of systems:

• An SMCI x9 based system (1s Ivy Bridge)
• An SMCI x10 based system (1s Haswell)
• An SMCI x11 based system (2s Skylake)

For each, I verified that we could control the LEDs of all the ports that have disks in them. I also went through and took a dump when completed to make sure that there were no memory leaks.