6 Commits

Author SHA1 Message Date
Nathan Whitehorn
391dff8624 Add driver for the PAPR VSCSI virtual SCSI controller. This lets FreeBSD
install directly into standard POWER LPARs, as found for example in
QEMU. The core of this device is the SCSI RDMA protocol as also found in
Infiniband. The SRP portions of the driver will be factored out and placed
/sys/cam in the future to allow them to be used for IB storage. Thanks to
Scott Long for a great deal of implementation help.

Reviewed by:	scottl
Approved by:	re (kib)
2013-09-28 15:46:03 +00:00
Nathan Whitehorn
9f70672718 Rework handling of ofw_quiesce(), making it the responsibility of the
platform modules. Whether to call this function or not is highly machine
dependent: on some systems, it is required, while on others it breaks
everything. Platform modules are in a better position to figure this
out. This is required for POWER hypervisor SCSI to work correctly. There
are no functional changes on Powermac systems.

Approved by:	re (kib)
2013-09-27 13:12:47 +00:00
Nathan Whitehorn
91a01b9161 Make sure that ref and changed bits propagate back to the VM layer
whenever pages are unmapped. The old code had several races that could
allow these to become stale.

Approved by:	re (kib)
2013-09-27 13:11:20 +00:00
Nathan Whitehorn
dbd2830c65 As idling the CPU no longer causes hangs on QEMU, reenable the pSeries
cpu_idle() routine.

Approved by:	re (delphij)
2013-09-26 21:18:46 +00:00
Nathan Whitehorn
145341e9cd Fix bug where UART unit number was not set properly, which prevented
operation on systems with multiple serial ports. Also turn on
interrupts for the UART device, which were disabled due to a
now-fixed bug in QEMU.

Approved by:	re (gjb)
2013-09-26 18:01:32 +00:00
Nathan Whitehorn
7a8d25c037 Merge in support for PAPR-compliant (Power Architecture Platform
Requirements) systems from the projects/pseries branch. This in principle
includes all IBM POWER hardware released in the last 15 years with the
exception of POWER3-based systems when run in 64-bit mode. The main
development target, however, has been the PAPR logical partition support
that is the default target in KVM on POWER and QEMU -- mileage may vary
on actual hardware at present. Much of the heavy lifting here was done
by Andreas Tobler.

Approved by:	re (kib)
2013-09-17 17:37:04 +00:00