Commit Graph

5 Commits

Author SHA1 Message Date
Neel Natu
d17b5104a9 Add emulation of the "outsb" instruction. NetBSD guests use this to write to
the UART FIFO.

The emulation is constrained in a number of ways: 64-bit only, doesn't check
for all exception conditions, limited to i/o ports emulated in userspace.

Some of these constraints will be relaxed in followup commits.

Requested by:	grehan
Reviewed by:	tychon (partially and a much earlier version)
2014-05-23 05:15:17 +00:00
Neel Natu
b5b28fc9dc Add support for level triggered interrupt pins on the vioapic. Prior to this
commit level triggered interrupts would work as long as the pin was not shared
among multiple interrupt sources.

The vlapic now keeps track of level triggered interrupts in the trigger mode
register and will forward the EOI for a level triggered interrupt to the
vioapic. The vioapic in turn uses the EOI to sample the level on the pin and
re-inject the vector if the pin is still asserted.

The vhpet is the first consumer of level triggered interrupts and advertises
that it can generate interrupts on pins 20 through 23 of the vioapic.

Discussed with:	grehan@
2013-11-27 22:18:08 +00:00
Neel Natu
af480303a9 Eliminate redundant information about the host cpu in bhyve's KTR trace points.
This is always tracked by ktr(4) and can be displayed using the "-c" option
of ktrdump(8).

Discussed with:	grehan
2013-11-22 18:57:22 +00:00
Neel Natu
513c8d338d Rename the VMM_CTRx() family of macros to VCPU_CTRx() to highlight that these
tracepoints are vcpu-specific.

Add support for tracepoints that are global to the virtual machine - these
tracepoints are called VM_CTRx().
2013-10-31 05:20:11 +00:00
Peter Grehan
366f60834f Import of bhyve hypervisor and utilities, part 1.
vmm.ko - kernel module for VT-x, VT-d and hypervisor control
  bhyve  - user-space sequencer and i/o emulation
  vmmctl - dump of hypervisor register state
  libvmm - front-end to vmm.ko chardev interface

bhyve was designed and implemented by Neel Natu.

Thanks to the following folk from NetApp who helped to make this available:
	Joe CaraDonna
	Peter Snyder
	Jeff Heller
	Sandeep Mann
	Steve Miller
	Brian Pawlowski
2011-05-13 04:54:01 +00:00